• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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  • 优先权
    • 专利摘要:
    It comprises an outer cup (120) having a side wall, an annular lip (128) at a first end of the wall, and an annular flange disposed on the wall, and transversely to a longitudinal central axis of the mechanism. An inner cup (140) includes an outwardly extending annular lip and two shaft openings, and is disposed in the other cup so that the lip abuts against the rim of the outer cup and is secured non-rotatably to the latter by the outer cup lip which abuts against the inner cup lip. A shaft (162) is received in the apertures and a roller plunger (160) is rotatably received on the shaft so that a portion of the roller plunger extends axially outwardly beyond the lip outer cup.
    公开号:FR3050230A1
    申请号:FR1753318
    申请日:2017-04-14
    公开日:2017-10-20
    发明作者:Scott Abrahamson
    申请人:Koyo Bearings North America LLC；
    IPC主号:
    专利说明:

    CLAIM OF PRIORITY
    The present application claims priority over the provisional patent application US 62 / 323,110, filed April 15, 2016, and the provisional patent application US 62 / 379,505, filed August 25, 2016, all descriptions are incorporated herein. .
    FIELD OF THE INVENTION
    The present invention generally relates to push mechanisms. More particularly, the present invention relates to designs and methods for assembling push mechanisms and their associated alignment devices.
    BACKGROUND OF THE INVENTION
    The push mechanisms are often used in a valve control device of an internal combustion engine to transmit the movement of a camshaft of the engine to one or more of the intake or exhaust valves. When the camshaft rotates, the pusher mechanisms receive both lateral and downward force from the corresponding lobes on the camshaft, but transmit only the downward force to the valves to open and / or close the valves . The pusher mechanisms thus reduce the possibility of bending or damaging the valve stems of the valves. Also, pusher mechanisms are often used in camshaft driven high pressure fuel pumps, which are used in direct fuel injection systems.
    [0004] Bucket type pusher mechanisms typically include a stamped or cold formed bucket. A roller pusher is typically supported on a shaft which is directly attached to the bucket by stacking, necking, etc. As a result, the bucket is a load bearing member, and thus requires heat treatment and operations such as grinding. Also, the pusher mechanisms often have some form of alignment device carried in an opening defined by the bucket so that the rotation of the pusher mechanism in its corresponding bore is prevented. An example of known alignment devices includes a mushroom pin which is secured in a bucket aperture of the pusher mechanism. Such pins can be difficult to manufacture because of their complicated shapes. The necessary heat treatments of the bucket can also cause the deformation of the opening which receives the alignment device, thus complicating the assembly. Such alignment devices are often attached in their corresponding openings by a clamping fit.
    The present invention recognizes and discusses the considerations of the constructions and methods of the prior art.
    SUMMARY OF THE INVENTION
    An embodiment of the present disclosure provides a movable pusher mechanism within a bore along a longitudinal central axis of the bore, the mechanism comprising an outer cup having an inner surface and a outer surface defining a substantially cylindrical side wall, an annular lip portion disposed at a first end of the side wall, and an annular flange disposed on the inner surface of the side wall, the annular flange being disposed in a plane which is transverse to a central longitudinal axis of the pusher mechanism, an inner cup having an annular lip extending outwardly therefrom and a pair of shaft openings, the inner cup being disposed in the outer cup so that the lip of the inner cup abuts against the annular rim of the outer cup and is fixed in a manner non-rotating to the latter by the annular lip of the outer cup which abuts against the lip of the inner cup. a shaft having a first end and a second end, each of the first end and the second end being disposed in a corresponding opening of the shaft openings, and a roller pusher rotatably received on the shaft so that a part of the roller plunger extends axially outwardly beyond the annular lip portion of the outer cup.
    Another embodiment of the present description proposes a movable pusher mechanism inside a bore along a longitudinal central axis of the bore, the mechanism comprising an external cup having an internal surface and an outer surface defining a substantially cylindrical side wall, an annular lip portion disposed at a first end of the side wall, and an annular flange disposed on the inner surface of the side wall, the annular flange being disposed in a plane which is transverse to a longitudinal central axis of the pusher mechanism, an inner cup comprising an annular lip extending outwardly therefrom, the inner cup being disposed in the outer cup so that the lip of the inner cup abuts against the annular flange of the outer cup and is non-rotatably attached thereto. er by the annular lip of the outer cup which abuts against the lip of the inner cup, and a roller pusher rotatably supported by the inner cup.
    The accompanying drawings, which are incorporated in and constitute a part of the present description, illustrate one or more embodiments of the invention and together with the description serve to explain the principles of the invention.
    BRIEF DESCRIPTION OF THE DRAWINGS
    A complete and sufficient disclosure of the present invention, comprising its best embodiment, intended for those skilled in the art, which is presented in the description, which refers to the accompanying drawings, in which: [0010] FIGS. 1A and 1B are perspective views of an embodiment of a pusher mechanism according to the present description; Figure 2 is an exploded perspective view of the pusher mechanism shown in Figures 1A and 1B; Figures 3A, 3B and 3C are sectional views of the pusher mechanism shown in Figures 1A and 1B; Figures 4A and 4B are perspective views of the pusher mechanism shown in Figures 1A and 1B; Figure 5 is a perspective view of an outer cup of the pusher mechanism shown in Figures 1A and 1B; Figure 6 is a partial sectional view of a high pressure fuel pump including the pusher mechanism shown in Figures 1A and 1B; Figures 7A and 7B are perspective views of another alternative embodiment of a pusher mechanism according to the present description; Figure 8 is an exploded perspective view of the pusher mechanism shown in Figures 7A and 7B; Figures 9A, 9B, 9C and 9D are sectional views of the pusher mechanism shown in Figures 7A and 7B; Figures 10A and 10B are perspective views of an inner cup of the pusher mechanism shown in Figures 7A and 7B; Figure 11 is a perspective view of an outer cup of the pusher mechanism shown in Figures 7A and 7B.
    Figures 12A and 12B are perspective views of an alternative embodiment of a pusher mechanism according to the present description; Fig. 13 is an exploded perspective view of the pusher mechanism shown in Figs. 12A and 12B; Figures 14A and 14B are sectional views of the pusher mechanism shown in Figures 12A and 12B; Figures ISA and 15B are perspective views of an inner cup of the pusher mechanism shown in Figures 12A and 12B; Figure 16 is a perspective view of an outer cup of the pusher mechanism shown in Figures 12A and 12B; Figures 17A and 17B are perspective views of another alternative embodiment of a pusher mechanism according to the present description; Fig. 18 is an exploded perspective view of the pusher mechanism shown in Figs. 17A and 17B; Figures 19A and 19B are sectional views of the pusher mechanism shown in Figures 17A and 17B; Figure 20 is a perspective view of an inner cup of the pusher mechanism shown in Figures 17A and 17B; Fig. 21 is a perspective view of a spacing device of the pusher mechanism shown in Figs. 17A and 17B; and [0031] Fig. 22 is a perspective view of an outer cup of the pusher mechanism shown in Figs. 17A and 17B.
    The repeated use of the reference signs in the present description and the drawings is intended to represent identical or analogous features or elements of the invention according to the disclosure.
    DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
    Reference is now made in detail to the presently preferred embodiments of the invention, of which one or more examples are illustrated in the accompanying drawings. Each example is provided by way of explanation and not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from its scope or spirit. For example, the features illustrated or described as part of one embodiment may be used in another embodiment to achieve yet another embodiment. Thus, it is intended that the present invention covers such modifications and variations as being within the scope of the appended claims and their equivalents.
    Referring now to the figures, as shown in Figures 1A to 3C, an embodiment of a pusher mechanism 100 according to the present description comprises an outer cup 120 substantially cylindrical, an inner cup 140 received inside. of the latter, a roller pusher 160 supported by the inner cup 140 and an alignment device 142 extending through an opening 122 formed in the outer cup 120. As shown in FIG. 6, the pusher mechanism 100 is used in a high pressure fuel pump 180 of an internal combustion engine, although other uses for the pusher mechanism 100 are possible. When a camshaft 182 of the engine rotates, a lobe 184 of the camshaft 182, or a rocker arm (not shown) connected to the camshaft 186, engages the roller pusher 160 of the pusher mechanism. 100 to convert the rotational movement of the camshaft 182 into a linear movement of the pusher mechanism 100 within a bore 186 of the corresponding yoke 188. A pump pump rod 180 is positioned inside and connected to the pusher mechanism 100 so that, when the pusher mechanism 100 moves in a linear direction within the bore 186, the pump rod pump 190 is displaced, alternately, to the left (as shown) by the spring 192 and to the right by the pusher mechanism 100. The forces from the camshaft 182 are thus transmitted through the mechanism of Pusher 100 to the pump 180 so that only forces substantially in the same direction as the movement of the pump rod 190 act on the pump 180. In addition, the pusher mechanism 100 serves as a vibration isolation device. torsion between the camshaft 182 and the pump 180 to prevent the transmission of rotational forces. As shown, the alignment device 142 (Fig. 1A) is an outwardly extending tongue, a portion of which is slidably received in a correspondingly shaped alignment groove (not shown) defined by the inner wall of the bore 186.
    In addition, with reference to Figure 5, the outer cup 120 of the present embodiment comprises a cylindrical outer surface 124, a cylindrical inner surface 126 substantially concentric with the latter, and an opening 122 defined on the inside for receive the alignment device 142. As shown, the opening 122 is generally circular, but may also be oval, square, etc. The outer cup 120 is preferably formed from a low, medium or high carbon, or alloy steel sheet blank by a stamping process, or a deep drawing process using a multi-station transfer press or progressive matrix press, in which case the opening 122 is formed, for example, by drilling, machining or cutting into the outer cup 120. In addition, the outer cup 120 comprises an annular lip 128 and 134 formed at each of its opposite ends. The annular lip 128 is thinner in the radial direction than the residual side wall of the outer cup 120, forming an annular flange 130 therewith. In its initial state, before fully assembling the pusher mechanism 100, the annular lip 128 extends axially outwardly parallel to a longitudinal central axis 132 of the outer cup 120, whereas the annular flange 130 is in a plane qpii is transverse to the longitudinal central axis 132. When forming the outer cup 120, the annular lip 134 can be initially formed while being radially inwardly since the other components of the roller plunger are preferably placed in the outer cup 120 from the end at which the annular lip 128 is disposed.
    4A and 4B, the inner cup 140 preferably comprises a cylindrical side wall 144, a lower semi-spherical portion 146, an upper lip 148 extending radially outwardly from an upper perimeter of the side wall, a pair of shaft openings 150 defined by side walls 144, and the alignment tongue 142 extending outwardly from the side wall. As best seen in FIGS. 1A, 3A and 3B, when fully inserted into the outer cup 120, the upper lip 148 of the inner cup 140 rests on the annular flange 130 of the outer cup 120 and the tab Alignment 142 extends outwardly from the alignment aperture 122. Once fully inserted into the outer cup 120 and rotatably positioned by means of the alignment tab 142, the inner cup 140 it is retained by folding the annular lip 128 inwards, as by crimping, spinning, punching, etc., so that the upper lip 148 is compressed, without rotation, between the annular lip 128 and the rim Annular 130. It should be noted that since the outer cup 120 does not directly support the shaft 162 of the roller pusher 16 0, there is no need for heat treatment processes which are typically performed on the cup External s known push mechanisms. Thus, the folding / crimping operation performed on the annular lip 128 is facilitated. However, in these applications, when the heat treatment of the outer cup 120 is desired for reasons of wear, the heat treatment process takes place after the opening 122 has been formed to receive the alignment feature 142. Next prior to folding, crimping, etc., the annular lip 128 inwardly, the annular lip 128 is subjected to a tempering treatment to facilitate the operation and help prevent cracking.
    Preferably, the inner cup 140 is formed from a sheet metal blank by a stamping process, or a stamping process and is subjected to heat treatment processes since it directly supports the shaft 162 of the pusher mechanism 100 and supports the cyclic force exerted by the pump rod 190 (Figure 6) at the bottom of the inner cup 140. Before the heat treatment processes, the shaft openings 150 are drilled in the side wall 144 of the inner cup 140 and extruded such that a boss 152 is formed around each shaft opening 150. Similarly, lubrication apertures 154 are also drilled in the semi-spherical lower portion 146 of the internal cup 140 before any of the heat treatment processes. As shown, the alignment tab 142 includes a rounded distal end which is formed correspondingly to the alignment groove (not shown) which is formed in the corresponding yoke 188 (FIG. 6). As shown, preferably, a portion of the semi-spherical lower portion 146 may be flattened, thereby forming a bottom wall 156 which is perpendicular to the longitudinal central axis 132 of the pusher mechanism 100. The bottom wall 156 facilitates the transfer forces of the pusher mechanism 100 to the corresponding pump stem 190, or alternatively, the valve stem. It should be noted, however, that in the alternative embodiments, the transverse shape of the lower portion 146 may have a constant radius of curvature. Alternatively, the lower portion 146 may be simply domed.
    As best seen in Figure 2, the roller pusher 160 comprises the shaft 162, an outer raceway 166 and a plurality of rollers 164 disposed between them so that the raceway 166 can freely rotate around the shaft 162. Opposite ends of the shaft 162 are received in the shaft openings 150 of the inner cup 140 so that the roller pusher 160 is mounted on the outer cup 120 of the pusher mechanism 100 by means of the inner cup. When assembled, the roller plunger 160 extends axially outwardly beyond the upper edge of the outer cup 120 so that the outer surface of the raceway 166 sets a lobe 184 correspondant of the camshaft 182, as shown in FIG. 6. Preferably, the diameters of the shaft openings 150 are slightly larger than the diameter of the shaft 162 so that the shaft 162 is free to rotate in the shaft openings 150 during operation. Alternatively, the opposite ends of the shaft 162 may be stacked, nicked, etc., on the inner cup 140 so that rotation relative thereto is prevented. It should be noted that when the shaft 162 is free to rotate within the shaft openings 150, the axial movement of the shaft 162 is limited by the abutment at each end with the inner surface 126 of the outer cup 120 Preferably, a washer 158 is disposed at each end of the raceway 160 to limit the movement of both the raceway 160 and the rollers 164 along the shaft 162. Preferably, annular beveled edges 168 are provided on the opposite ends of the outer raceway 166 to maximize the overall size of the outer raceway 166, without making contact with the inner surface of the semi-spherical lower portion 146 of the inner cup 140.
    As shown in Figures 7A to 9C, an alternative embodiment of a pusher mechanism 200 according to the present description comprises an outer cup 220 substantially cylindrical, an inner cup 240 received within the latter, a roller pusher 260 supported by the inner cup 240 and an alignment device 242 extending through a slot 222 formed in the outer cup 220. Similar to the previously described embodiment, the pusher magnetism 200 may be used in a high-pressure fuel pump 180 (Fig. 6) of an internal combustion engine, although other uses for the pusher mechanism 200 are possible.
    In addition with reference to FIG. 11, the external cup 220 comprises a cylindrical outer surface 224, a cylindrical inner surface 226 substantially concentric with the latter and the slot 222 defined in the annular lip 228 for receiving, in a sliding manner, the alignment device 242. As /
    shown, the slot 222 is generally U-shaped having a flat bottom edge 222a. However, the lower edge 222a may also have a semi-circular, curved shape, etc. The outer cup 220 is preferably formed from a low, medium or high carbon or alloy steel sheet blank by an embossing, or deep drawing process using a press. However, the slot 222 is preferably formed by drilling, although it can be machined or cut into the outer cup 220. In addition, the outer cup 220 comprises a multi-station transfer or a progressive matrix press. annular lip 228 and 234 formed at each of its opposite ends. The annular lip 228 is thinner in the radial direction than the residual side wall of the outer cup 220, forming an annular flange 230 therewith. Before the complete assembly of the pusher mechanism 200, the annular lip 228 extends axially outwardly parallel to a longitudinal central axis 232 of the outer cup 220, while the annular flange 230 is in a plane which is transverse to the longitudinal central axis 232. During the formation of the outer cup 220, the annular lip 234 may initially be formed while being radially inward since the other components of the roller plunger are preferably placed in the outer cup 220 from the end at which the annular lip 228 is disposed.
    In addition, with reference to Figures 10A and 10B, the inner cup 240 preferably comprises a side wall 244 comprising two opposite curved portions 243 with two parallel side portions 255 extending between them, a semi-spherical lower portion 246 , an upper lip 248 extending radially outwardly from an upper perimeter of the side wall 244, a pair of shaft openings 250 defined by the side wall 244 and the alignment tongue 242 extending outward from the side wall. As best seen in Figs. 7A, 9A and 9B, when fully inserted into the outer cup 220, the upper lip 248 of the inner cup 240 rests on the annular flange 23 0 of the outer cup 220 and the tab Alignment 242 extends outwardly from alignment slot 222. It should be noted that inner cup 240 can be inserted directly into outer cup 220 without tilting, since slot 222 is open at the perimeter of the annular lip 228 so that the alignment tab 242 can be slid directly inside.
    When fully inserted into the outer cup 220 and rotated by means of the alignment tab 242, the inner cup 240 is retained by folding the annular lip 228 inwardly, as by crimping, winding by twist, punch-forming, etc., so that the upper lip 248 is compressed, without rotation, between the annular lip 228 and the annular flange 230. It should be noted that, in alternative embodiments, a device of FIG. The spacer 229 may be positioned between the annular lip 228 and the annular flange 230. The spacing device 229 helps to ensure that the potential gaps between the lip 228 and the flange 230 are minimized. Spacer 229 is preferably formed from a plastic or similar material. It should be noted that since the outer cup 220 does not directly support the support shaft 262 of the roller pusher 260, there is no need for heat treatment processes which are typically performed on the outer cups of the control mechanisms. push known. Thus, the folding / crimping operation performed on the annular lip 228 is facilitated. However, in these applications in which the heat treatment of the outer cup 220 is desired for reasons of wear. the heat treatment process occurs after the alignment slot 222 has been formed. Then, before folding, crimping, etc., the annular lip 228 inwards, the annular lip 228 is subjected to a treatment of income to facilitate the operation and help prevent the cracking effect.
    Preferably, the inner cup 240 is formed from a sheet metal blank by a stamping process or a stamping process and is subjected to heat treatment processes since it directly supports the shaft 262 of the pusher mechanism 200. Initially, the side wall 244 is substantially cylindrical when the inner cup 240 is formed. However, prior to the heat treatment process, the flat side portions 245 are formed, resulting in the side portions 245 extending between two opposing curved portions 243. Also, prior to the heat treatment processes, the shaft openings 250 are drilled in the flat side portions 245 of the inner cup 240. The lubrication apertures 254 are also drilled in the semi-spherical lower portion 246 of the inner cup 240 before heat treatment processes. As shown, the alignment tab 242 includes a rounded distal end that is correspondingly formed to the alignment groove (not shown) that is formed in the corresponding yoke 188 (FIG. 6). Although not shown, similarly to the first embodiment (FIGS. 1A and 1B), a part of the semi-spherical lower portion 246 can be flattened, thus forming a bottom wall which is perpendicular to the longitudinal central axis 232 of the push mechanism 200.
    As best seen in Figure 8, the roller pusher 260 comprises the shaft 262, an outer raceway 266 and a plurality of rollers 264 arranged between them so that the raceway 266 can be driven freely in Rotation about the shaft 262. The opposite ends of the shaft 262 are received in the shaft openings 250 of the inner cup 240. When assembled, the roller pusher 260 extends axially outwardly. beyond the upper edge of the outer cup 220 so that the outer surface of the raceway 266 engages a corresponding lobe 184 of the camshaft 182, as shown in FIG. 6. Preferably, the diameters of the The shaft openings 250 are slightly larger than the diameter of the shaft 262 so that the shaft 262 is free to rotate within them. Alternatively, the opposite ends of the shaft 262 are stacked, nicked, etc. on the inner cup 240 so that rotation relative to the latter is prevented. It should be noted that when the shaft 262 is free to rotate inside the shaft openings 250, the axial movement of the shaft 262 is limited by the abutment at each end with the inner surface 226 of the outer cup. 220. It should be noted that, contrary to the embodiment previously described, the flat internal surfaces of the parallel side portions 255 of the inner cup 240 cancel the need for washers at the opposite ends of the rollers 264. Preferably, annular bevelled edges 268 are provided on the opposite ends of the outer raceway 266 to maximize the overall size of the outer race 266, without making contact with the rounded lower corners of the inner cup 240.
    As shown in Figures 12A to 14B, an alternative embodiment of a pusher mechanism 300 according to the present description comprises a substantially cylindrical outer cup 320, an inner cup 340 received within the latter, a roller pusher 360 supported by the inner cup 340 and an alignment device 342 formed on the outer cup 320. Similar to the previously described embodiments, the pusher mechanism 300 can be used in a high pressure fuel pump. 180 (Fig. 6) of an internal combustion engine, although other uses for the pusher mechanism 300 are possible.
    In addition, with reference to Figure 16, the outer cup 320 comprises a cylindrical outer surface, a cylindrical inner surface 324/326 substantially concentric with the latter, and the alignment device 342. The outer cup 320 is of Preferably formed from a low-grade, medium-grade or high-carbon or alloy steel blank in a stamping process, or a deep-drawing process using a station transfer press. multiple or a progressive matrix press. The semicircular alignment feature 342 is preferably initiated or formed in the side wall of the outer cup 320 prior to the heat treatment processes.
    The outer cup 320 comprises an annular lip 328 and 334 formed at each of its opposite ends. The annular lip 328 is thinner in the radial direction than a first wall portion 324 of the side wall, forming an annular flange 330 therewith. Before fully assembling the pusher mechanism 300, the annular lip 328 extends axially outwardly parallel to a longitudinal central axis 332 of the outer cup 320, while the annular flange 33 0 is in a plane which is transverse relative to the longitudinal central axis 332. When forming the outer cup 320, the annular lip 334 may initially be formed radially inwardly since the other components of the roller pusher are preferably placed in the outer cup 320 from the end at which the annular lip 328 is disposed. In addition, a rim 331 or seat for receiving a corresponding pair of flanges 348 formed on an outer surface of the inner cup 340 is disposed between the first wall portion 324 and the second wall portion 326 of the inner surface of the cup. 320. The rim 331 is in a plane that is perpendicular to the longitudinal central axis 332 of the pusher mechanism 300.
    In addition, with reference to Figures ISA and 15B, the inner cup 340 preferably comprises a side wall 345 comprising two opposite curved portions 346 with two parallel side portions 344 extending between them, a lower wall 356, a pair shaft openings 350 defined by side walls 344, and a retaining tongue 352 disposed on one of the curved portions 346 of the side wall. As best seen in Fig. 14A, when fully inserted into the outer cup 320, the flanges 348 of the inner cup 340 rest on the annular flange 331 of the outer cup 320 and the retaining tab 352 extends. outwardly into an opening in the side wall of the outer cup 320 which results from the formation of the alignment feature 342. It should be noted that the inner cup 340 can be inserted directly into the outer cup 320 with the minimum force since the alignment tab 352 is bent so that it cams the side wall of the outer cup 320 outwardly until it engages the opening of the Alignment feature 342. Once fully inserted into the outer cup 320 and rotatably positioned by means of the retaining tongue 352, the inner cup 340 is retained therein by folding the annular lip. 328 inward, such as by crimping, spinning, punching, etc., until the annular lip 328 engages an upper surface 341 of the curved sidewall portions 346 of the inner cup. Thus, the inner cup 340 is compressed, non-rotatably, between the annular lip 328 and the annular flange 331. It should be noted that since the outer cup 320 does not directly support the shaft 362 of the roller pusher 360 heat treatment processes that are typically performed on the outer cups of the known pusher mechanisms are not required. Thus, the folding / crimping operation performed on the annular lip 328 is facilitated. However, in those applications in which the heat treatment of the outer cup 320 is desired for wear reasons, the heat treatment process takes place after the alignment feature 342 has been formed. Then, before folding, crimping, etc., the annular lip 328 inwardly, the annular lip 328 is subjected to a tempering treatment to facilitate the operation and help prevent the cracking effect.
    [0049] Preferably, the inner cup 340 is formed from a low-grade, medium-grade, or high-carbon sheet metal blank by a stamping process, or a punching process. deep stamping using a multi-station transfer press or a progressive matrix press, and is subjected to heat treatment processes since it directly supports the shaft 362 of the pusher mechanism 300. Prior to the heat treatment processes, the shaft openings 350 are drilled in the flat side wall portions 344 of the inner cup 340. The lubrication apertures 354 are also drilled in the bottom wall 356 of the inner cup 340 prior to the heat treatment processes. As shown, preferably, the bottom wall 356 is flat and perpendicular to the longitudinal central axis 332 of the pusher mechanism 300. The bottom wall 356 facilitates transfer of forces from the pusher mechanism 300 to the corresponding pump rod, the valve stem, etc.
    As best seen in FIG. 13, the roller pusher 360 comprises the shaft 362, an outer raceway 366 and a plurality of rollers 364 disposed between them so that the raceway 365 can rotate freely around the shaft 362. The opposite ends of the shaft 362 are received in the shaft openings 350 of the inner cup 340. When assembled, the roller pusher 360 extends axially towards the outside of the upper edge of the outer cup 320 so that the outer surface of the raceway 366 engages a corresponding lobe 184 of the camshaft 182, as shown in FIG. 6. Preferably, the diameters shaft openings 350 are slightly larger than the diameter of the shaft 362 so that the shaft 362 is free to rotate inside thereof. Alternatively, the opposite ends of the shaft 362 may be stacked, nicked, etc., on the inner cup 340 so that rotation relative thereto is prevented. It should be noted that when the shaft 362 is free to rotate within the shaft openings 350, the axial movement of the shaft 362 is abutted at each end with the inner surface 326 of the cup Preferably, the flat inner surfaces of the parallel side wall portions 344 of the inner cup 340 serve as bearing surfaces for the ends of the rollers 364, thus canceling the need for washers at opposite ends of the rollers 364. Preferably, annular bevelled edges 368 are provided on opposite ends of the outer raceway 366 to maximize the overall size of the outer raceway 366, without making contact with the rounded lower corners of the inner cup 340.
    As shown in Figures 17A to 19B, an alternative embodiment of a pusher mechanism 400 according to the present description comprises a substantially cylindrical outer cup 420, an inner cup 440 received within the latter, a spacer 470, a roller plunger 460 supported by the inner cup 440 and an alignment device 442 formed on the outer cup 420. Similar to the previously described embodiments, the plunger mechanism 400 may be used in a high-pressure fuel pump 180 (FIG. 6) of an internal combustion engine, although other uses for the push mechanism 400 are possible.
    In addition, with reference to FIG. 22, the outer cup 420 comprises a cylindrical outer surface 424, a cylindrical inner surface 426 substantially concentric with the latter, and an alignment device 442. The outer cup 420 is preferably formed from a low carbon, medium carbon or alloy steel sheet blank by an embossing process, or a deep drawing process using a multi-station transfer press or progressive matrix press. The semicircular alignment feature 442 is preferably pierced in the side wall of the outer cup 420 prior to the heat treatment processes. Specifically, a coil-shaped aperture 422 is drilled in the sidewall which provides two projections which are then radially outwardly bent by forming, resulting in the alignment feature 442.
    The outer cup 420 comprises an annular lip 42 and 434 formed at each of its opposite ends. The annular lip 428 is thinner in the radial direction than the side wall of the outer cup 420, forming an annular flange 430 therewith. Before fully assembling the pusher mechanism 400, the annular lip 428 extends axially outwardly parallel to a longitudinal central axis 432 of the outer cup 420, while the annular flange 430 is in a plane which is transverse to the longitudinal central axis 432. During the formation of the outer cup 420, the annular lip 434 may be initially formed while being radially inward since the other components of the roller plunger are preferably placed in the outer cup 420 from the end at which the annular lip 428 is disposed. Unlike the previously described embodiments, the outer cup 420 does not include a rim formed on its inner surface 426 that is configured to support the inner cup 440. Instead, the pusher mechanism 400 includes a spacer 470. which supports the inner cup 440 inside the outer cup 420, as described above.
    [0054] In addition with reference to Figs. 19A, 19B and 21, the spacer 470 preferably includes a cylindrical side wall 474 including a plurality of openings 472 formed therein, and a top wall 476 comprising a plurality of lubrication apertures 478 formed therein. As best seen in Figs. 19A and 19B, when fully inserted into the outer cup 420, a lower edge of the side wall 474 abuts against the annular lip 434 so that the top wall 476 is transverse to the the longitudinal central axis 432 and positioned to support the inner cup 440 in the outer cup 420.
    Preferably, the spacing member 470 is formed from a low, medium or high carbon or alloy steel sheet blank by a stamping process, or a deep drawing process using a multi-station transfer press or a progressive matrix press, and is not subject to heat treatment processes since it does not directly support the pusher mechanism support shaft 462 400. The apertures 472 are drilled in the side wall 474 of the spacer 470 as a means for reducing the total weight of the pusher mechanism 400. The lubrication apertures 478 are also drilled in the top wall 476 of the housing. spacer 470 so that they at least partially align with the lubrication apertures 454 formed in the bottom wall 456 of the inner cup 440. As shown, preferably In that case, the top wall 476 is flat and perpendicular to the longitudinal center axis 432 of the pusher mechanism 400 to facilitate the transfer of forces from the pusher mechanism 400 to the corresponding pump rod, valve stem, and the like.
    In addition, with reference to FIG. 20, the inner cup 440 preferably comprises a side wall 445 comprising two opposite curved portions 446 with two parallel lateral portions 444 extending between them, a plurality of openings 451 defined in FIG. the side wall, a bottom wall 456, a pair of shaft openings 450 defined by the side walls 444, and a retaining tongue 452 disposed on one of the curved portions 446 of the side wall. As best seen in FIG. 19A, when it is fully inserted into the outer cup 420, the bottom wall 456 of the inner cup 440 rests on the top wall 476 of the spacer 470 and the tab retainer 452 extends outwardly into opening 422 in the side wall of outer cup 420 which results from the forming of alignment feature 442. It should be noted that inner cup 440 can be inserted directly into the outer cup 420 with the minimum force since the alignment tab 452 is bent so that it cams the side wall of the outer cup 420 outwardly until it it engages the opening of the alignment feature 442. Once fully inserted into the outer cup 420 and rotatably positioned by means of the retaining tab 452, the inner cup 440 is retained by folding the lip a Fig. 428 inwardly, as by crimping, spinning, punching, etc., until the annular lip 428 engages an upper surface 441 of the curved lateral wall portions 446 of the inner cup. Thus, the inner cup 440 is non-rotatably compressed between the annular lip 428 and the spacer 470, which abuts against the annular flange 434. It should be noted that since the cup external 420 does not directly support the shaft 462 of the roller plunger 460, there is no need heat treatment processes that are typically performed on the outer cups known push mechanisms. Thus, the folding / crimping operation performed on the annular lip 428 is facilitated. However, in those applications in which the heat treatment of the outer cup 420 is desired for wear reasons, the heat treatment process occurs after the opening 422 of the alignment feature 442 has been formed by drilling. Then, before folding, crimping, etc., the annular lip 428 inwardly, the annular lip 428 is subjected to a tempering treatment to facilitate the operation and help prevent the cracking effect.
    [0057] Preferably, the inner cup 440 is formed from a low-grade, medium-grade, or high-carbon, or alloy steel sheet blank by a stamping process, or a process of deep drawing using a multi-station transfer press or a progressive matrix press, and is subjected to heat treatment processes since it directly supports the shaft 462 of the pusher mechanism 400. Prior to the heat treatment processes, the shaft openings 450 are drilled in the flat side wall portions 444 of the inner cup 440 as are the openings 451 in the curved lateral wall portions 446. The lubrication apertures 454 are also drilled in the lower wall 456 of the internal cup 440 prior to the heat treatment processes. As shown, preferably, the bottom wall 356 is flat and perpendicular to the longitudinal central axis 432 of the pusher mechanism 400. The bottom wall 456 facilitates the transfer of forces from the roller pusher 460 to the spacer 470 and therefore, the corresponding pump rod, the valve stem, etc.
    As best seen in Figure 18, the roller plunger 460 comprises the shaft 462, an outer race 466 and a plurality of rollers 464 disposed between them so that the raceway 466 can freely rotate around. 462. The opposite ends of the shaft 462 are received in the shaft openings 450 of the inner cup 440. When assembled, the roller plunger 460 extends axially outwardly beyond from the upper edge of the outer cup 420, so that the outer surface of the raceway 466 engages a corresponding lobe 184 of the camshaft 182, as shown in FIG. 6. Preferably, the diameters of the openings The shaft 450 is slightly larger than the diameter of the shaft 462 so that the shaft 462 is free to rotate inside thereof. Alternatively, the opposite ends of the shaft 462 may be stacked, nicked, etc., on the inner cup 440 so that rotation relative thereto is prevented. It should be noted that when the shaft 462 is free to rotate within the shaft openings 450, the axial movement of the shaft 462 is limited by the abutment at each end with the inner surface 426 of the outer cup 420 It should be noted that the flat internal surfaces of the parallel wall portions 444 of the inner cup 440 cancel the need for washers at the opposite ends of the rollers 464. Preferably, annular bevelled edges 468 are provided on the opposite ends of the path. external bearing 466 to maximize the overall size of the outer race, without making contact with the rounded lower corners of the inner cup 440.
    While one or more preferred embodiments of the invention are described above, those skilled in the art will appreciate that various modifications and variations can be made in the present invention without departing from the scope of the present invention. neither of his mind. It is intended that the present invention covers such modifications and variations when within the scope and spirit of the appended claims and their equivalents.
    权利要求:
    Claims (21)
    [1" id="c-fr-0001]
    A pusher mechanism movable in a bore along a longitudinal central axis of the bore, comprising: an outer cup having an inner surface and an outer surface defining a substantially cylindrical side wall, an annular lip portion disposed at the a first end of the side wall, and an annular flange disposed on the inner surface of the side wall, the annular flange being disposed in a plane which is transversal to a longitudinal central axis of the pusher mechanism; an inner cup comprising an annular lip extending outwardly therefrom, and a pair of shaft openings, the inner cup being disposed in the outer cup so that the lip of the inner cup is abutment against the annular flange of the outer cup and is fixed, non-rotatably, to the latter by the annular lip of the outer cup c [ui abuts against the lip of the inner cup; a shaft having a first end and a second end, each of the first end and the second end being disposed in a corresponding opening of the shaft openings; and a roller plunger rotatably received on the shaft so that a portion of the roller plunger extends axially outwardly beyond the annular lip portion of the outer cup.
    [2" id="c-fr-0002]
    A pusher mechanism according to claim 1, wherein the inner cup further comprises a side wall comprising two opposing curved portions, a pair of parallel side portions extending therebetween, and a semi-spherical portion disposed at the a second end of the side wall, wherein the annular lip extends radially outwardly from a front end of the side wall.
    [3" id="c-fr-0003]
    The pusher mechanism of claim 2, wherein a shaft opening is defined in each of the parallel side portions of the inner cup.
    [4" id="c-fr-0004]
    The pusher mechanism according to claim 1, wherein the inner cup further comprises a cylindrical sidewall having a first end and a second end, a semispherical portion disposed at the second end of the cylindrical sidewall, and wherein the annular lip extends radially outwardly from the first end of the cylindrical sidewall.
    [5" id="c-fr-0005]
    A pusher mechanism according to claim 4, wherein the pair of shaft openings is defined in the side wall of the inner cup and a cylindrical boss is formed around each shaft opening, the cylindrical bosses extending inwardly from the side wall to the longitudinal central axis of the pusher mechanism.
    [6" id="c-fr-0006]
    6. Pusher mechanism according to claim 5, wherein the first and second ends of the shaft are rotatably received in the shaft openings.
    [7" id="c-fr-0007]
    A pusher mechanism according to claim 4, wherein the semispherical portion of the inner cup has a radius of curvature which brightens a radius of a cross section of the inner cup when it is caught in a plane which, at both passes through the cylindrical side wall and is transverse to the longitudinal central axis of the pusher mechanism.
    [8" id="c-fr-0008]
    8. Pusher mechanism according to claim 4, wherein the inner cup further comprises an alignment device which extends radially outwardly from the latter, through an opening defined in the side wall of the outer cup. .
    [9" id="c-fr-0009]
    The pusher mechanism of claim 8, wherein the alignment device further comprises a tab which is integrally formed with the inner cup.
    [10" id="c-fr-0010]
    10. Pusher mechanism according to claim 4, wherein the roller plunger comprises an outer race received in rotation about the shaft and a plurality of rollers disposed between the outer race and the shaft, in wherein the outer raceway includes an annular bevelled surface at each end.
    [11" id="c-fr-0011]
    The pusher mechanism of claim 3, wherein the annular flange is disposed at the first end of the outer cup adjacent to the annular lip portion.
    [12" id="c-fr-0012]
    The pusher mechanism of claim 11, wherein the annular lip portion is thinner than the side wall of the outer cup in a radial direction relative to the longitudinal center axis of the pusher mechanism.
    [13" id="c-fr-0013]
    A pusher mechanism according to claim 1, wherein the side wall of the outer cup comprises a first cylindrical side wall portion and a second cylindrical side wall portion, and the annular flange is disposed between the first cylindrical side wall portion. and the second cylindrical sidewall portion.
    [14" id="c-fr-0014]
    The pusher mechanism of claim 13, wherein the first cylindrical side wall portion is thinner than the second cylindrical side wall portion in a radial direction relative to the longitudinal center axis of the pusher mechanism.
    [15" id="c-fr-0015]
    A pusher mechanism movable within a bore along a longitudinal central axis of the bore, comprising: an outer cup having an inner surface and an outer surface defining a substantially cylindrical side wall, a portion of annular lip disposed at a first end of the side wall, and an annular flange disposed on the inner surface of the side wall, the annular flange being disposed in a plane which is transverse to a longitudinal central axis of the latch mechanism; push; an inner cup comprising an annular lip extending outwardly from the latter, the inner cup being disposed in the outer cup so that the lip of the inner cup abuts against the annular flange of the outer cup and is non-rotatably fixed thereto by the annular lip of the outer cup which abuts against the lip of the inner cup; and a roller pusher supported, in rotation, by the inner cup.
    [16" id="c-fr-0016]
    The pusher mechanism of claim 15, wherein the inner cup further comprises a pair of shaft openings, and the roller pusher further comprises a shaft having a first end and a second end, each of the first end and the second end being disposed in a corresponding aperture of the shaft openings, and an outer raceway received, in rotation, on the shaft so that a portion of the outer raceway extends axially towards the outside beyond the annular lip portion of the outer cup.
    [17" id="c-fr-0017]
    The pusher mechanism of claim 15, wherein the inner cup further comprises a cylindrical sidewall having a first end and a second end, a semispherical portion disposed at the second end of the cylindrical sidewall, and wherein the annular lip extends radially outwardly from the first end of the cylindrical sidewall.
    [18" id="c-fr-0018]
    The pusher mechanism of claim 17, wherein the semispherical portion of the inner cup has a radius of curvature which equals a radius of a cross section of the inner cup when it is taken in a plane which, at both passes through the cylindrical side wall and is transverse to the longitudinal central axis of the pusher mechanism.
    [19" id="c-fr-0019]
    The pusher mechanism of claim 15, wherein the inner cup further comprises a pair of curved sidewalls and a pair of parallel sidewalls extending therebetween, wherein the curved sidewalls have a curvature which is the same as the curvature of adjacent portions of an inner surface of the inner cup.
    [20" id="c-fr-0020]
    The pusher mechanism of claim 19, wherein the lip of the inner cup is disposed on one of the curved sidewalls.
    [21" id="c-fr-0021]
    The pusher mechanism of claim 15, wherein the annular flange is disposed at the first end of the outer cup adjacent to the annular lip portion.
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    同族专利:
    公开号 | 公开日
    DE102017206523B4|2019-09-12|
    US20170299037A1|2017-10-19|
    KR101931426B1|2018-12-20|
    CN107859541B|2020-05-01|
    KR20170118622A|2017-10-25|
    US20190063580A1|2019-02-28|
    US10119607B2|2018-11-06|
    JP2017207202A|2017-11-24|
    CN107859541A|2018-03-30|
    US10385957B2|2019-08-20|
    JP6445611B2|2018-12-26|
    DE102017206523A1|2017-10-19|
    CN111622819A|2020-09-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1613117A|1923-04-23|1927-01-04|Jacob C Miller|Cushioned valve tappet|
    US1848083A|1929-08-07|1932-03-01|Gen Motors Corp|Method of forming valve tappets|
    US2891525A|1955-08-01|1959-06-23|Thompson Ramo Wooldridge Inc|Tappet barrel|
    DE2063819A1|1970-12-24|1972-07-06|Motomak Motorenbau Maschinen- und Werkzeugfabrik, Konstruktionen GmbH, 8070 Ingolstadt|Self-adjusting, hydraulically adjusting lash adjuster for valve control in internal combustion engines|
    IT940087B|1971-10-29|1973-02-10|Piv Skf Spa|PUNTERS FOR THE CONTROL OF THE VALVES OF INTERNAL COMBUSTION ENGINES AND PROCEDURE FOR ITS MANUFACTURING|
    DE2835912C2|1978-08-16|1981-12-03|M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg|Flat tappets for valve drives|
    JPS5540269A|1978-09-16|1980-03-21|Suzuki Motor Co Ltd|Manufacturing method of tappet for internal combustion engine by press|
    US4335685A|1979-10-19|1982-06-22|Caterpillar Tractor Co.|Lifter assembly|
    DE3149356A1|1981-12-12|1983-06-16|INA Wälzlager Schaeffler KG, 8522 Herzogenaurach|Method for the production of a valve tappet for internal combustion engines|
    JPH0472613B2|1986-04-30|1992-11-18|Hitachi Seisakusho Kk|
    DE3820645C2|1988-06-18|1991-03-21|Herzing & Schroth Gmbh & Co, 6053 Obertshausen, De|
    JP3268463B2|1992-03-03|2002-03-25|フジオーゼックス株式会社|Hydraulic tappet for internal combustion engine|
    US5280771A|1992-09-23|1994-01-25|Eaton Corporation|Direct acting hydraulic tappet|
    DE4428309A1|1993-08-24|1995-03-02|Schaeffler Waelzlager Kg|Valve bucket tappet|
    US5553512A|1993-09-14|1996-09-10|Ntn Corporation|Roller tappet having yoke member with flat top plate|
    DE19542697A1|1995-11-16|1997-05-22|Schaeffler Waelzlager Kg|Tappet for valve drive of internal combustion engine|
    DE19602012A1|1996-01-20|1997-07-24|Schaeffler Waelzlager Kg|Valve tappets actuated by a cam of an internal combustion engine|
    DE19603916A1|1996-02-03|1997-08-07|Schaeffler Waelzlager Kg|Tappet for the valve train of an internal combustion engine|
    US5904123A|1997-05-26|1999-05-18|Ina Walzlager Schaeffler Ohg|Mechanical valve tappet|
    DE19730200A1|1997-07-15|1999-01-21|Schaeffler Waelzlager Ohg|Housing for a switchable tappet|
    DE10106983A1|2001-02-15|2002-08-29|Ina Schaeffler Kg|tappet|
    JP2003065021A|2001-08-29|2003-03-05|Fuji Oozx Inc|Tappet for internal combustion engine|
    JP2004257286A|2003-02-25|2004-09-16|Nsk Ltd|Tappet roller and cam follower device|
    DE10360467B4|2003-12-22|2011-11-10|Trw Deutschland Gmbh|Mechanical valve lifter|
    DE102004025532A1|2004-05-25|2005-12-15|Ina-Schaeffler Kg|Cup tappet of a valve train of an internal combustion engine|
    DE102004039705A1|2004-08-17|2006-03-23|Ina-Schaeffler Kg|Switchable plunger|
    DE102004056457A1|2004-11-23|2006-06-08|Schaeffler Kg|Cup tappets for an internal combustion engine|
    WO2008068116A1|2006-12-05|2008-06-12|Schaeffler Kg|Mechanical tappet, in particular for a fuel pump of an internal combustion engine|
    US7793583B2|2006-12-06|2010-09-14|Schaeffler Kg|Mechanical tappet in particular for a fuel pump of an internal combustion engine|
    DE102006059716A1|2006-12-18|2008-06-26|Mahle International Gmbh|Non-rotating ram of a valve train|
    DE102009013130A1|2009-03-13|2010-09-16|Schaeffler Technologies Gmbh & Co. Kg|tappet|
    DE102009013132A1|2009-03-13|2010-09-16|Schaeffler Technologies Gmbh & Co. Kg|tappet|
    FR2946406B1|2009-06-05|2016-07-01|Skf Ab|FOLLOWING CAM ROLL DEVICE, IN PARTICULAR FOR A FUEL INJECTION PUMP.|
    JP2011094596A|2009-11-02|2011-05-12|Denso Corp|Tappet device and fuel supply pump using the same|
    DE102010026360B4|2010-07-07|2020-12-03|Schaeffler Technologies AG & Co. KG|Plunger with an anti-twist device|
    DE102010032254A1|2010-07-26|2012-01-26|Schaeffler Technologies Gmbh & Co. Kg|Cup tappets and method for its production|
    US9243521B2|2010-12-13|2016-01-26|Eaton Corporation|Pump actuator anti-rotation device|
    PT2466159E|2010-12-15|2013-11-19|Agustawestland Spa|Fastening assembly|
    KR101627956B1|2012-02-08|2016-06-07|코요 베어링즈 노쓰 아메리카 엘엘씨|Follower mechanism|
    JP2013217304A|2012-04-10|2013-10-24|Ntn Corp|Tappet for pump and high-pressure fuel pump|
    DE102012210176A1|2012-06-18|2013-12-19|Schaeffler Technologies AG & Co. KG|tappet|
    JP6110080B2|2012-06-20|2017-04-05|株式会社オティックス|Roller lifter for internal combustion engine|
    DE102013216562A1|2013-08-21|2015-02-26|Schaeffler Technologies Gmbh & Co. Kg|Method for deep-drawing cup tappets|
    EP2853698B1|2013-09-27|2016-06-01|Aktiebolaget SKF|Cam follower, injection pump and valve actuator comprising such a cam follower and manufacturing method|
    EP2853699B1|2013-09-27|2016-05-25|Aktiebolaget SKF|Tappet, injection pump and valve actuator comprising such a tappet and manufacturing method for such a tappet|
    EP2853738B1|2013-09-27|2016-04-27|Aktiebolaget SKF|Mechanical system, injection pump and valve actuator comprising such a mechanical system and manufacturing method|
    EP3092377A4|2014-01-12|2017-11-15|Eaton Corporation|Engine valve lifter oil flow control and anti-rotation feature|
    EP2947307A1|2014-05-23|2015-11-25|Aktiebolaget SKF|Cam follower roller device with integrated sealing elements, notably for a fuel injection pump|
    US10119607B2|2016-04-15|2018-11-06|Koyo Bearings North America Llc|Follower mechanism|JP6380132B2|2015-01-29|2018-08-29|株式会社デンソー|Drive mechanism components|
    EP3173591B1|2015-11-24|2018-07-11|Aktiebolaget SKF|Cam follower roller device with spacer|
    US10119607B2|2016-04-15|2018-11-06|Koyo Bearings North America Llc|Follower mechanism|
    DE102018128384B3|2018-11-13|2019-11-07|Schaeffler Technologies AG & Co. KG|Roller tappet for a fuel pump|
    US10941737B2|2019-01-14|2021-03-09|Koyo Bearings North America Llc|Follower mechanism with anti-rotation feature|
    US11149593B2|2019-10-03|2021-10-19|Koyo Bearings North America Llc|Tappet assembly with formed anti-rotation alignment device|
    US11143059B2|2019-10-03|2021-10-12|Koyo Bearings North America Llc|Tappet assembly with unground outer cup|
    WO2022006517A1|2020-07-02|2022-01-06|Koyo Bearings North America Llc|Anti-rotation feature on a drawn cup tappet|
    法律状态:
    2018-03-20| PLFP| Fee payment|Year of fee payment: 2 |
    2019-04-25| PLFP| Fee payment|Year of fee payment: 3 |
    2020-04-27| PLFP| Fee payment|Year of fee payment: 4 |
    2021-04-26| PLFP| Fee payment|Year of fee payment: 5 |
    优先权:
    申请号 | 申请日 | 专利标题
    US201662323110P| true| 2016-04-15|2016-04-15|
    US201662379505P| true| 2016-08-25|2016-08-25|
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