• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An open position holding rod assembly (28) includes an outer tubular structure (30) and an inner tubular structure (32) positioned for telescopic movement relative to the outer tubular structure (30). A locking mechanism (50) holds the holding rod assembly in an open position in an extended state to support a panel of an aircraft in an open position upon selection of a user.
    公开号:FR3025548A1
    申请号:FR1558239
    申请日:2015-09-04
    公开日:2016-03-11
    发明作者:Bo D Artin
    申请人:Hartwell Corp；
    IPC主号:
    专利说明:

    [0001] FIELD OF THE INVENTION The present invention generally relates to an open-position holding rod for a fan cowl, and more specifically to a locking mechanism for such a rod for holding in the open position. .
    [0002] Background Many aircraft include one or more panels that are used to cover an opening of the aircraft. The aperture may cover a door panel, a motor component, or an engine housing often referred to as a nacelle or fan cowl. Such structures can be used in a variety of facilities in addition to hoods on the aircraft. One of the problems with a hood is that it may have to be held in an open position to allow an aircraft mechanic or other operator access to the area under the hood. For example, an aircraft mechanic or other tradesman may need to repair the aircraft or observe the condition of structures or components under the hood. When the hood is moved from the rest of the structure, it must be held in an open position. The hood also needs to be easily reclosable by allowing the operator to clear the locking mechanisms on the hood generally easily and efficiently.
    [0003] A situation that occurs with a hood is that it may be required to accommodate both compression loads and voltage loads. A compressive load can occur due to the weight of the hood resting on the extended rod so that the length of the rod supports the weight from a first connection point at the hood to a second connection point on another part of the structure of the aircraft. The hood may be required to withstand the tension loads when positioned in a different position or when subjected to a wind load. Under these conditions, the stem must maintain its blocked condition. This contextual information is provided to provide certain information for which the applicant believes to be relevant to the present invention. No admission is made, nor should any admission be inferred or interpreted, that any of the foregoing information constitutes prior art contrary to the present invention.
    [0004] SUMMARY An open position holding rod assembly according to the present invention includes a locking mechanism to allow a single operator to control the lock mechanism and support a load while the assembly is unlocked. In the illustrative embodiments, the open position holding rod assembly is used on a fan cowl of an aircraft. The open position holding rod assembly described includes a locking mechanism which is mounted on an inner tube of a telescopic tubular bar structure comprising the inner tube and an outer tube. The locking mechanism allows the tubular bar structure to be unlocked while supporting compression loads such as the retraction load when the system is unlocked. In addition, the invention relates to a locking mechanism that resets during extension and / or retraction of the telescopic rod components.
    [0005] According to the present invention, an open position holding rod assembly comprises an outer tube, an inner tube extending into the outer tube and configured to slide relative to the outer tube between a fully folded position in which the inner tube is substantially received in the outer tube and a fully extended position in which the inner tube is extended away from the outer tube, and a locking mechanism positioned within the outer tube and comprising a housing coupled to the inner tube, one or more locking pins extending into the housing, and a plunger extending into the housing to engage the locking pins, the locking mechanism being coupled to the inner tube to move with the inner tube, and the blocking mechanism is configured to engage the outer tube to block movement of the inner tube relative to the tubing e external when the inner tube reaches the fully extended position. In the illustrative embodiments, the open position holding rod assembly further comprises an inner body coupled to the inner tube, wherein the housing is housed within the inner body and wherein the locking pins are extend through the inner body to the outer tube. In the illustrative embodiments, the open position holding rod assembly further includes a plunger biasing device engaged with the inner body and the plunger for biasing the plunger toward the locking pins.
    [0006] In the illustrative embodiments, the open position holding rod assembly further includes a rod coupled to the housing for extending away from the housing and the locking mechanism further comprises a housing displacement control member. plunger engaged with the rod and the plunger piston and configured to control the displacement of the plunger relative to the housing. In the illustrative embodiments, the plunger-moving control member comprises a bushing positioned to surround the rod, one or more ball bearings received in one or more holes extending through the rod, and a spring of compression positioned between the bushing and the housing to bias the bushing away from the housing and the ball bearing engages the plunger and the bushing to control movement of the plunger relative to the housing. In the illustrative embodiments, the plunger is formed to include a ramp configured to engage the locking pins to bias the locking pins radially outwardly toward the outer tube. In the illustrative embodiments, the outer tube comprises an inner annular groove and the plunger forces the locking pins into the groove of the outer tube when the inner tube reaches the fully extended position and the locking pins are aligned with the groove. . In the illustrative embodiments, the open position holding rod assembly further comprises a release sleeve coupled to the plunger and configured to move the plunger relative to the housing upon selection of a user to enable the locking pins are removed from the groove of the outer tube and to allow movement of the inner tube relative to the outer tube. In the illustrative embodiments, the open position holding rod assembly further includes a first coupling assembly coupled to the inner tube and a second coupling assembly coupled to the outer tube, the connecting assemblies being configured to engage with each other. engaging an engine assembly to maintain a panel of the engine assembly in an open position. Other objects, objects, advantages and features of the invention will become more apparent from the following non-restrictive description of its specific embodiments, given by way of example only with reference to the accompanying drawings.
    [0007] The present invention is hereinafter described with reference to the accompanying drawings which are given by way of non-limiting example, in which: FIG. 1A is a perspective view of a motor assembly of FIG. aircraft 5 comprising a nacelle or fan cowl surrounding a gas turbine engine supported on the aircraft by an engine mounting bracket and suggesting that the fan cowl comprises a left panel and a right panel; Figure 1B is a front elevational view of the engine assembly of Figure 1A showing the left and right fan cowl panels extended away from the gas turbine engine in an open position and suggesting that a open position holding rod assembly according to the present description is positioned to support the panels in the open position; Fig. 2A is a perspective view of the open position holding rod assembly of Fig. 1B showing that the retainer pin assembly comprises an outer tube, an inner tube positioned within the outer tube for the telescopic movement, and connection assemblies for connecting with shaft posts of the motor assembly; FIG. 2B is a detailed view of the open position holding rod assembly of FIG. 2A to describe that a locking mechanism of the hold rod assembly in the open position is connected to the inner tube and moves inside the outer tube when the inner and outer tubes move relative to each other; Figure 3A is a side elevational view of the open position holding rod assembly of Figure 2A showing the open position holding rod assembly in a fully folded position corresponding to a closed position of the hood panels. blowing and suggesting that the holding rod assembly in the open position is in an unlocked state; FIG. 3B is a view similar to FIG. 3A showing the open position holding rod assembly extended to a vibration position and suggesting that the holding rod assembly in the open position is still in the unlocked state. to allow the holding rod assembly in the open position to expand or retract upon the selection of a user; Figure 3C is a view similar to Figure 3A showing the holding rod assembly in the open position in a fully extended position corresponding to the open position of the fan cover panels and suggesting that the holding rod assembly open position is in a locked state to retain the panels in the open position; FIG. 4A is an exploded perspective view of the open position holding rod assembly of FIG. 2A showing that the locking mechanism comprises an inner body and a cartridge coupled to the inner body for movement at the inside the outer tube; FIG. 4B is an exploded perspective view of the locking mechanism of FIG. 4A showing that the cartridge comprises a housing, locking pins positioned around the housing, and a plunger for actuating the locking pins and suggesting that the cartridge is received in the inner body so that the locking pins extend through openings of the inner body; Fig. 5A is a front perspective view of the cartridge of Fig. 4B illustrating that a leading end of the plunger extends through the housing while a trailing end of the plunger extends at a distance. the case; Figure 5B is a rear perspective view of the cartridge of Figure 5A showing that the locking pins extend into the pin holes of the housing to engage the plunger and are held in position by assemblies. relaxing ball; Fig. 6 is an exploded perspective view of the cartridge of Fig. 5B showing that the plunger leading end is formed to include a groove and suggesting that the ball bearings extend into the housing for engaging the leading end of the plunger to control movement of the plunger relative to the housing; Figure 7A is a partial sectional view taken on line 7A-7A in Figure 3B showing that the locking mechanism is positioned within a cavity defined in part by the outer tube; Fig. 7B is an enlarged illustration of Fig. 7A showing that a pin head of the locking pins engages an inner surface of the outer tube when the holding rod assembly in the open position is in the vibration position. and suggesting that the plunger is urged toward the locking pins so that a ramp engages the locking pins to force the locking pins against the inner surface of the outer tube; Figure 8A is a partial sectional view taken on line 8A-8A in Figure 3C showing that a portion of the locking mechanism extends out of the outer tube when the open position holding rod assembly is in the fully extended position; Fig. 8B is an enlarged illustration of Fig. 8A showing the pin heads of the locking pins positioned in a groove formed on the inner surface of the outer tube and suggesting that the plunger ramp forces the locking pins radially towards the inside. in the groove of the outer tube to place the holding rod assembly in the open position in the off state; Fig. 9A is a partial perspective view of the open position holding rod assembly of Fig. 3C showing a blocked state mark exhibited by an unlocking sleeve and suggesting that the release sleeve is in focus. moving to cover the blocked status mark and placing the holding rod assembly in the open position in an intermediate unblocked state; Figure 9B is a sectional view taken on line 9B-9B in Figure 9A showing that the release sleeve is coupled to the plunger by a pin to move the plunger as the sleeve is moved; Fig. 10A is a view similar to Fig. 9A showing that the release sleeve has moved to uncover a mark of the unlocked state; Fig. 10B is a sectional view taken on the line 10B-10B in Fig. 10A showing that the plunger of the locking mechanism has moved with the release sleeve and suggesting that a plunger displacement control member has been activated to limit the displacement of the plunger; Fig. 11A is a partial sectional view of the locking mechanism of Fig. 10B showing the holding rod assembly in the open position in an intermediate unlocked state and suggesting that the extension of the holding rod assembly into position open retracts the locking pins from the groove of the outer tube; Fig. 11B is a view similar to Fig. 11A showing that the locking pins are in a retracted position and suggesting that the locking pins are engaged with a beveled surface of the groove to move the locking pins radially towards the housing. inside; Fig. 12A is a sectional view partially taken on the line 12A-12A in Fig. 3A showing that the outer tube comprises an end plug coupled to a first end of the outer tube and suggesting that the locking mechanism is moving towards the first end of the outer tube to engage with the end cap; Fig. 12B is a detail view of Fig. 12A showing the sleeve of the cartridge engaged with an end cap plug extension and suggesting that an inner groove of the bushing is aligned with the ball bearings in the housing shaft to allow the ball bearings to extend out of the plunger groove and release the plunger to move toward the locking pins; Fig. 13A is a perspective view of another embodiment of an open position holding rod assembly according to the present invention; Fig. 13B is a sectional view taken on line 13B-13B in Fig. 13A; Fig. 14 is an enlarged illustration of Fig. 13B; Fig. 15 is an enlarged illustration of Fig. 13B; and Fig. 16 is an enlarged illustration of Fig. 13B.
    [0008] The presentation presented here illustrates embodiments of the invention that are not to be construed as limiting the scope of the invention. Additional features of the present invention will become more apparent to those skilled in the art after considering the following detailed description of the illustrative embodiments illustrating the best mode of realization of the description as currently perceived. DETAILED DESCRIPTION While the present invention may be sensitive to embodiments of different shapes, it is shown in the drawings, and it is described in detail, embodiments understanding that the present disclosure should be considered as a example of the principles of the invention. The description is not limited in its application to details of structure, function, construction or arrangement of the components shown in the following description or illustrated in the drawings. The description may include other embodiments and may be practiced or made in different ways. Also, it should be understood that the phraseology and terminology used herein are intended for the purpose of the description and should not be construed as limiting. The use of the different phrases and terms is meant to encompass the identified articles or functions and their equivalents as well as the additional articles or functions. Unless otherwise stated, the different sentences, the different terms and their variants are used here in their broad sense and encompass all variants of these sentences and terms. Further, and as described in the following paragraphs, the specific configurations illustrated in the drawings are intended to illustrate the embodiments of the description. However, other alternative structures, functions and configurations are possible and are considered to be within the scope of the teachings of the present disclosure. In addition, unless otherwise indicated, the term "or" should be considered inclusive. The terms of the present description are to be interpreted broadly throughout this application to include all versions, equivalents, known and subsequently discovered variants, and other forms of the aforementioned terms as well as than the other terms. The present invention is intended to be interpreted broadly and not limited.
    [0009] A motor assembly 10 for attachment with an aircraft is shown in FIG. 1A. The engine assembly 10 includes a nacelle or fan cowl 12 positioned to surround a gas turbine engine 14 supported by a motor mounting bracket 16 to secure the engine assembly 10 to the aircraft. The fan cover 12 comprises a right panel 13 and a left panel 15 which are movable relative to the motor 14 between a closed position, shown in Fig. 1A and an open position shown in Fig. 1B. One or more open position holding rod assemblies 28 in accordance with the present invention are positioned to support the right and left panels 13, 15 in the open position, as suggested in FIG. 1B. Each open position holding rod assembly 28 is coupled between an outer rod support 22 of the panels 13, 15 and an inner rod support 24. The inner rod support 24 is illustratively coupled to another portion. of the fan cowl 12, but may be part of the engine 14 in some embodiments. Connection assemblies 46 having pivoting bushings 48 are attached at one end 40 of the outer tube 30 and at one end 42 of the inner tube 32 for attachment of the hold rod assembly in the open position 28 with the rod supports. internal 22, 24, as suggested in FIGS. 2A and 2B. Each open position holding rod assembly 28 includes an outer tube 30, an inner tube 32, and a locking mechanism 50 as shown in FIG. 2A. The inner tube 32 extends into the outer tube 30 and is configured to telescopically move relative to the outer tube 30. In the illustrative embodiment, the locking mechanism 50 is coupled to the inner tube 32 to move to the inside of the outer tube 30 when the inner tube 32 moves relative to the outer tube 30. A friction damper 80 is coupled to an outside of the holding rod assembly in the open position 28 to laterally bias the assembly. holding rod in the open position 28 remote engine 14 while the panels 13, 15 are in the closed position. Thus, the friction damper 80 assists in the initial opening of the panels 13, 15 when released from the closed position. In some embodiments, the friction damper 80 is formed from a flexible material, such as rubber for example. In some embodiments, the friction damper 80 engages the motor 14 or other portion of the blower hood 12 to place a lateral biasing force against the hold rod assembly in the open position 28. The locking mechanism 50 comprises an inner body 78 and a cartridge 64, as suggested in Figure 2B. The inner body 78 slides within a cavity 60 of the outer tube 30 along its inner surface 62. The inner body 78 is coupled to the inner tube 32 and houses the cartridge 64 for movement with the inner tube 32 as suggested in Figures 4A and 4B. The locking pins 94 of the cartridge 64 slide along the inner surface 62 and engage the outer tube 30 to prevent movement of the inner tube 32 relative to the outer tube 30 when the panels 13, 15 are in position. the open position, as suggested in Figures 7A-8B. An unlocking sleeve 180 is coupled to the cartridge 64 and configured to unlock the hold rod assembly in the open position 28 upon selection of a user to allow passage of the panels 13, 15 from the open position to the position closed, as suggested in FIGS. 9A-12B. The inner tube 32 is received in the outer tube 30 and in an unlocked state when the open position holding rod assembly 28 is in a fully collapsed position, as suggested in FIG. 3A. The inner tube 32 extends away from the outer tube 30 when the panels 13, 15 are open, as suggested in FIG. 3B. In the illustrative embodiment, the open position holding rod assembly 28 is in an unlocked state while the inner tube 32 is moving relative to the outer tube 30 from the fully collapsed position. This intermediate position is sometimes referred to as the vibration position, and a user can move the panels 13, 15 to the open or closed position while the open position holding rod assembly 28 is in the vibration position. . The open position holding rod assembly 28 is placed in a locked state when the panels 13, 15 reach the open position and the open position holding rod assembly 28 is in a fully extended position, as suggested on Figure 3C.
    [0010] The holding rod assembly in the open position 28 is assembled along its central axis 34, as suggested in FIG. 4A. The inner tube 32 and the blocking assembly 50 are arranged inside the outer tube 30, and end caps 66, 68 are coupled to the ends 40, 42 respectively and held in place by pins 72 in order to defining an internal cavity 60 of the open-position holding rod assembly 28. In the illustrative embodiment, the cartridge 64 is received in the inner body 78 which is inserted into the outer tube 30 to engage with the inner tube 32. The inner body 78 comprises an extension portion 182 and a slot formed through the extension portion 182. In some embodiments, the extension portion 182 threadingly engages with the inner tube 32. The cartridge 64 comprises a housing 92, locking pins 94 which extend into the housing 92, and a plunger 90 which extends into the housing 92 to engage the locking pins. lock 94, as s uggéré in Figure 4B. The cartridge 64 is received in the inner body 78 so that the locking pins 92 extend into openings 96 of the inner body 78. A plunger biasing device 134 is coupled between the cartridge 64 and the inner body 78 for urging the plunger 90 toward the locking pins 94. The plunger biasing device 134 includes a pair of washers 138, 140 and a compression spring 136 positioned between the washers 138, 140 to bias the washers 138, 140 at a distance from each other. A pair of expansion rings 74 is configured to engage the annular grooves 76 formed in the inner body 78.
    [0011] The extension portion 182 of the inner body 78 also passes through the unlocking sleeve 180, as suggested in FIG. 4A. A pin 188 extends through the release sleeve 180 and into the slot 186 to engage the plunger 90 of the cartridge 64 to allow a user to unlock the hold rod assembly in the open position. The housing 92 of the cartridge 64 is formed to include a plurality of fluid passages 95 as shown in Figures 5A and 5B. In some embodiments, the expansion strips 74 seal against the outer tube 30 and cooperate with the fluid passages 95 to provide damping forces during movement of the left and right panels 13, 15 of the fan cowl 12 For example, the cavity 60 may be filled with a fluid such as air or a liquid, and the fluid passages 95 serve to restrict the movement of the fluid within the cavity 60 to regulate the movement of the fluid. inner tube 32 with respect to the outer tube 30. Expansion rings 74 slide along the outer tube 30 when the inner tube 32 moves relative to the outer tube 30.
    [0012] The plunger 90 comprises a leading end 142 and a trailing end 144, as suggested in FIGS. 5A-6. A radially extending flange 152 is formed on the plunger 90 between the leading end 142 and the trailing end 144 and is configured to cooperate with the plunger biasing device 134 to bias the plunger 90. to the locking pins 94. The plunger 90 is formed to include a ramp 160 to engage the locking pins 94 and to force the locking pins 94 radially outwardly as the plunger 90 is biased to the locking pins 94. The plunger 90 3025548 11 is also formed to include an annular groove 130 to engage the ball bearings 124 of a plunger controller 101 to control the movement of the plunger. Plunger 90 relative to housing 92. A hole 190 is formed through the trailing end 144 of plunger 90 to receive pin 1 88 which is also engaged with the release sleeve 180. The locking pins 94 comprise a pin head 107 and a pin shaft 102 as shown in Fig. 6. The pin head 107 includes a driving surface 165 and a trailing surface 167 opposed to the leading surface 165. A beveled edge 164 is formed along a radially outer edge of the trailing surface 167. The pin shaft 102 is formed to include an annular groove The ball bearing assemblies 98 each comprise a ball bearing 104, a compression spring 106, and a set screw 108 for coupling the trigger assembly to a ball bearing assembly 98. 98 with the housing 92. The pin shafts 102 of the locking pins 94 are inserted into pin holes 105 formed in the housing 92 and the plunger 90 is inserted into the housing 90 as suggested. in Figures 5A and 5B. Three locking pins 94 are shown. In some embodiments, more than three locking pins 94 are used. In some embodiments, less than three locking pins 94 are used. The housing 92 also includes a rod 100 extending from one side of the housing 92 which defines an internal bore 112 for receiving the leading end 142 of the plunger 90 as suggested in Figs. 5A-6. The plunger moving control member 101 engages the rod 110 and includes ball bearings 124, a bushing 109 and a compression spring 114. The holes 126 are formed through the rod 110 to receive the ball bearings 124. The sleeve 109 slides on an outer surface 111 of the rod 110 to trap the ball bearings 124 between the sleeve 109 and the plunger 90, as suggested in Figure 6. The sleeve 109 comprises a sleeve 116 and a flange 118. The compression spring 114 is positioned to surround the sleeve 116 and is configured to engage the housing 92 and the flange 118 to bias the bushing 109 away from the housing 92. A retaining ring 120 is coupled to an annular groove 122 formed in the shank 110 to retain the bushing 109 on the shank 110. The bushing 109 is also formed to include an inner annular groove 132 for receiving the seals. ball bearings. In operation, the inner tube 32 is extended away from the outer tube 30, when the panels 13, 15 are open, as suggested in Figure 7A. The locking mechanism 50 moves with the inner tube 32. The plunger biasing device 134 is positioned between an inner shoulder 150 of the inner body 78 and the flange 152 of the plunger 90 to urge the plunger 90 toward the Lock pins 94. Ramp 160 of plunger 90 engages with pin shafts 102 of locking pins 94 to bias locking pins 94 radially outwardly. The pin heads 107 slide along the inner surface 62 of the outer tube 30 as the inner tube 32 moves relative to the outer tube 30. The retainer rod in the open position 28 reaches a fully extended position when the panels 13, 15 reach the open position, as suggested in FIG. 8A. In the fully extended position, the locking pins 94 align with an inner annular groove 163 of the outer tube 30 and are forced into the groove 163 by the plunger 90, as suggested in Fig. 8B. The leading surface 165 of the pin head 107 engages a surface 169 of the groove 163 to prevent the inner tube 32 from extending back into the outer tube 30 and places the assembly holding rod in the open position 28 in a locked state to support the panels 13, 15 in the open position. A corresponding surface 172 of the opening 96 engages with the pin head 107 to oppose the compressive forces on the holding rod assembly in the open position 28. The unlocking sleeve 180 moves with the plunger 90 through the connection of the pin 188 which moves in the slot 186. The unlocking sleeve 180 limits the displacement of the plunger 90 by engaging an abutment shoulder 184 on the inner body 78. The plunger 90 is positioned to prevent radially inward movement of the locking pin 94, as shown in FIG. 8B. The further extension of the holding rod assembly in the open position 28, for example by the involuntary movement of the panels 13, 15, engages the beveled edge 164 of the pin head 107 with a beveled surface 162 of the groove 163 to prevent movement of the inner tube 32 relative to the outer tube 30 while the open position holding rod assembly 28 is in the off state. For example, a gust of wind may urge the panels 13, 15 to a position beyond the open position, but the panels 13, 15 remain in the open position due to the locking mechanism 50. A corresponding surface 174 of the opening 96 engages with the pin head 107 to oppose the extension forces on the holding rod assembly in the open position 28. The displacement of the unlocking sleeve 180 by a user moves the piston plunger 90 relative to the locking pins 94 for positioning the open position holding rod assembly 28 in an intermediate unlocked state, as suggested in Figs. 9A-10B. In the illustrative embodiment, a locked state marker 192 of the open position holding rod assembly 28 is coupled to the extension portion 182 to indicate to a user that the holding rod assembly open position is in the off state, as suggested in Figure 9A. In some embodiments, the blocked status mark 192 is a green stripe or stripe. A user moves the release sleeve 180 toward the end 52 of the inner tube 32 to move the plunger 90 as suggested in FIGS. 10A and 10B.
    [0013] In the unlocked intermediate state, the locking pins 94 are further engaged with the groove 163 to prevent movement of the inner tube 32 relative to the outer tube 30 to the folded position, as suggested in FIG. 10B. Thus, the open position holding rod assembly 28 supports the panels 13, 15 in the open position while being in the unlocked intermediate state to allow a user to prepare the panels 13, 15 for movement in the closed position without the user having to keep the panels 13, 15 in the open position. In the illustrative embodiment, an unlocked status mark 194 of the open-position holding rod assembly 28 is coupled to the extension portion 182 to indicate to a user that the holding rod assembly 18 open position is in an unlocked state, as suggested in Figure 10A. In some embodiments, the blocked status mark 194 is a red stripe or stripe to indicate to a user that the movement may place the hold rod assembly in the open position 28 in a fully unlocked state and permit the panels 13 , 15 to move to the closed position.
    [0014] When the unlocking sleeve 180 is pulled to move the plunger 90, the groove 130 formed near the leading end 142 aligns with holes 126, as suggested in FIG. 10B. The compression spring 114 urges the bushing 109 away from the housing 92 to force the ball bearing 124 out of the groove 132 of the bushing 109 and into the groove 130 of the plunger 90.
    [0015] The sleeve 116 then traps the ball bearings 124 in the groove 130 so that the ball bearing 124 engages with the plunger 90 to prevent displacement of the plunger 90. This again allows a user to place the holding rod assembly in the open position 28 in the unlocked intermediate state without the need to further interact with the holding rod assembly in the open position 28 during closure of the panels 13, 15. The inner tube 32 is extended away from the outer tube 30, for example by moving the panels 13, 15 past the open position, to engage the beveled edge 164 of the pin heads 107 with the bevelled surface 162 of the groove 163, as suggested in Figure 11A. The inner tube 32 is moved until an outer shoulder 176 of the inner body 78 engages an inner shoulder 178 of the outer tube 30, so that the locking pins 94 are forced radially inward towards the plunger 90 to place the holding rod assembly in the open position 28 in a fully unlocked state, as suggested in FIG. 11B. The groove 100 on the pin shaft 102 aligns with the ball bearing 104 of the ball expansion assembly 98 to hold the locking pin 94 in position relative to the plunger 90 while the rod assembly in the open position 28 is in the fully unlocked state so that the locking pins 94 do not reset the groove 163. The inner tube 32 extends into the outer tube 30 when the panels 13, 15 are moved into the closed position, as suggested in Figure 12A. The locking mechanism 50 engages with a cylindrical plug extension 70 of the end cap 66 when the open position holding rod assembly 28 is in the fully folded position, as suggested in FIGS. 12A and 12B. . One end 179 of the plug extension 70 engages the flange 118 of the socket 109 to align the inner groove 132 with the holes 126. The biasing device 134 biases the plunger 90 toward the housing 92 to force the ball bearing 124 out of the groove 130 near the leading end 142 and in the groove 132 of the sleeve 109 to place the locking mechanism 50 in a cocked state. In the cocked state, the plunger 90 engages with the locking pins 94 to bias the locking pins 94 radially outward to allow the retainer pin assembly to be in the open position be placed in the off state when the panels 13, 15 are again moved to the open position. As described in detail above, the open position holding rod assembly 28 provides controlled movement of the right and left panels 13, 15 of a fan cowl. In some embodiments, the open position holding rod assembly 28 is used on other areas of an aircraft where a panel is to be held in an open position. In some embodiments, the open position holding rod assembly 28 is used on other land, sea or air carrier vehicles. The open position holding rod assembly 28 is illustratively formed from rigid materials, such as metal, metal alloys, or plastic, for example. In some embodiments, an aluminum alloy and / or stainless steel are used to form some or all of the hold rod assembly in the open position 28.
    [0016] Another embodiment of an open position holding rod assembly 228 is shown in Figures 13A and 13B. The open position holding rod assembly 228 is substantially similar to the open position holding rod assembly 28. The open position holding rod assembly 228 includes an outer tube 230, an inner tube 232, and a blocking mechanism 250. The inner tube 232 extends into the outer tube 230 and is configured to move relative to the outer tube 230 in a telescopic manner. In the illustrative embodiment, the lock mechanism 250 is coupled to the inner tube 232 to move within the outer tube 230 as the inner tube 232 moves relative to the outer tube 230. The lock mechanism 250 includes a cartridge 264 and clamping screws 208 configured to couple the cartridge 264 with the inner tube 232, as suggested in Figure 14. End caps 266, 268 are coupled to the ends 240, 242 of the outer tube 230 and the tube 232, respectively, to define an internal cavity 260 of the open position holding rod assembly 228, as suggested in FIGS. 15 and 16. Connection assemblies 246, 247 are attached to the end caps 266, 268. In the illustrative embodiment, the cartridge 264 is received in an inner body 278 formed by the inner tube 232. The cartridge 264 includes a housing 292, locking pins 294 which extend into the housing 292, and a plunger 290 which extends into the housing 292 to engage the locking pins 294, as suggested in Fig. 14. The cartridge 264 is received in the inner body 278 so that the locking pins 292 extend into the openings 296 of the inner body 278. A compression spring 238 is coupled between the cartridge 264 and the inner body 278 to bias the plunger 290 toward the locking pins 294. Compression spring 236 is positioned between a washer 240 and an annular flange 252 of the plunger 290. An expansion ring 274 is configured to engage an annular groove 276 formed on the inner body 278.
    [0017] An unlocking sleeve 280 is coupled to a connecting rod 291 by a pin 288, as suggested in FIG. 13B. The pin 288 extends through a slot 286 formed in the inner tube 232. The connecting rod 291 is coupled to the plunger 290 by a pin 293. The plunger 290 includes a leading end 241 and a trailing end 243, as suggested in FIG. 14. The plunger 290 is formed to include a ramp 261 to engage the locking pins 294 and to force the locking pins 294 radially outwardly when the plunger 290 is biased toward the locking pins 294. The plunger 290 is also formed to include an annular groove 239 to engage the ball bearings 224 of a plunger displacement controller 201 to control displacing the plunger 290 relative to the housing 292. The locking pins 294 comprise a pin head 207 and a pin shaft 202, as shown in FIG. e is shown in Fig. 14. The pin head 207 includes a leading surface 265 and a trailing surface 267 opposite to the leading surface 265. A beveled edge 264 is formed along a radially outer edge of the blade. Leakage Area 267. The pin shaft 202 is formed to include an annular groove 200 for engagement with a ball bearing assembly 298. The ball expansion assembly 298 includes a ball bearing 204 and a ball bearing. Washer 217 for holding the ball bearing 204 in the housing 292. The pin shafts 202 of the locking pins 294 are inserted into pin holes 205 formed in the housing 292 and the plunger 290 is inserted into the housing 290.
    [0018] The housing 292 also includes a rod 210 extending from one side of the housing 292 which defines an internal bore 212 for receiving the leading end 241 of the plunger 290, as suggested in FIG. Piston plunger actuating member 201 engages the shaft 210 and includes ball bearings 224, bushing 209, and a compression spring 214. The holes 226 are formed through the shaft 210 to receive the bearings. The bushing 209 slides on the rod 110 to trap the ball bearings 224 between the bushing 209 and the plunger 290. The bushing 209 comprises a sleeve 216 and a flange 218. The compression spring 214 is positioned to surrounding the sleeve 216 and is configured to engage the washer 217 and the flange 218 to bias the sleeve 209 away from the housing 292 and bias the ball bearing 204 toward the pin shaft 202. A The retaining ring 220 is coupled to an annular groove 222 formed in the shaft 210 to retain the bushing 209 on the shaft 210. The bushing 209 is also formed to include an inner annular groove 237 for receiving the ball bearings 224.
    [0019] The open position holding rod assembly 228 operates substantially in the same manner as the open position holding rod 28. The pin heads 207 slide along the inner surface 262 of the outer tube 230 when the inner tube 232 is moved relative to the outer tube 230. In a fully extended position, the locking pins 294 align with an inner annular groove 263 of the outer tube 230 and are forced into the groove 263 by the plunger 290. The surface Attack 265 of the pin head 207 engages a surface 269 of the groove 263 to prevent the inner tube 232 from extending back into the outer tube 230 and places the stem assembly 302. holding in open position 228 in a locked state to support the panels of a fan cowl in an open position. A corresponding surface 273 of the aperture 296 engages with the pin head 207 to oppose the compressive forces on the open position holding rod assembly 228. The unlocking sleeve 280 moves with plunger 290 through pin connection 288, connecting rod 291 and pin 293, as suggested in FIG. 13B. A corresponding surface 271 of the opening 296 engages with the pin head 207 to oppose the extension forces on the holding rod assembly in the open position 228.
    [0020] The unlocking sleeve 280 limits the movement of the plunger 290 as the pin 288 engages the opposite ends of the slot 286. The displacement of the unlocking sleeve 280 by a user displaces the plunger 290 relative to the locking pins. locking 294 to place the holding rod assembly in the open position 228 in an intermediate unlocked state. A user moves the release sleeve 280 toward the end 242 of the inner tube 232 to move the plunger 290 as suggested in FIG. 13B. When the unlocking sleeve 280 is pulled to move the plunger 290, the groove 239 formed near the leading end 241 aligns with the holes 226. The compression spring 214 biases the bushing 209 at a distance of 20 housing 292 to force the ball bearing 224 out of the groove 237 of the sleeve 209 and into the groove 239 of the plunger 290. The sleeve 216 then traps the ball bearing 224 in the groove 230 so that the ball bearing 224 engages with plunger 290 to prevent displacement of plunger 290.
    [0021] The inner tube 232 is extended away from the outer tube 230 to engage the beveled edge 264 of the pin heads 207 with the beveled surface 262 of the groove 263. The inner tube 232 is moved until a shoulder external member 276 of the inner body 278 engages an inner shoulder 278 of the outer tube 230 so that the locking pins 294 are forced radially inwardly toward the plunger 290 to place the holding rod assembly into position. open position 228 in a fully unlocked state. The groove 200 on the pin shaft 202 aligns with the ball bearing 204 of the ball expansion assembly 298 to hold the locking pin 294 in position relative to the plunger 290, while the entire The open position holding rod 228 is in the fully unlocked state so that the locking pins 294 do not reset the groove 263. The locking mechanism 250 engages with a cylindrical plug extension 270 of the end plug 266 when the open position rod assembly 228 is in a fully folded position, as suggested in FIG. A plate 279 of the plug extension 270 engages the bushing 209 to align the inner groove 237 with the holes 226. The plate 279 is biased toward the bushing 209 by a compression spring 277. The compression spring 236 urges the plunger 290 toward the housing 292 to force the ball bearing 224 out of the groove 239 and into the groove 237 of the bushing 209 to place the lock mechanism 250 in a cocked state. In the cocked state, the plunger 290 engages with the locking pins 294 to bias the locking pins 294 radially outward to allow the retainer rod assembly to be in the open position 228 to again in the off state. A compression spring 289 is coupled to the inner tube 232 and engages the pin 188 as suggested in Figures 13B and 15. The compression spring 289 and the compression spring 277 cooperate to bias the rod assembly. maintaining the open position 228 to an extended state to assist in the initial opening of the panels to which the open holding rod assemblies 228 are attached. In the illustrative embodiments, an open position holding rod assembly which includes at least one outer tubular structure and an inner tubular structure with a locking mechanism carried on the inner tubular structure and interacting with the outer tubular structure to retain the holding rod assembly in the open position in a variety of conditions or conditions. In one state, the tubes are telescopically retracted while in another position the tubes are extended telescopically. The locking mechanism includes structures that facilitate unlocking to retract the inner tube telescopically into the outer tube. The mechanisms also facilitate engagement of the locking pins carried on the locking mechanism to engage an inner surface of the outer tube in an extended position. An outer sleeve is attached to the portions of the lock mechanism and operable relative to a portion of the lock mechanism to unlock the mechanism to fold the rod assembly. In addition, the outer sleeve is used to facilitate a "flag" condition that indicates that the locking mechanism is "locked" or "unlocked" depending on the position of the outer sleeve which is also used to achieve the desired condition. In the illustrative embodiments, there is provided an open position holding rod assembly (sometimes referred to as a bar) which allows one person to intervene by supporting a load while being in an intermediate delaved position. A locking mechanism is mounted within the bar and allows the bar to be placed in an intermediate unlocked state while supporting a compressive load. The locking mechanism resets itself during the retraction of the bar. In illustrative embodiments, the open position holding rod assembly is a tubular metal design formed from an aluminum alloy and / or stainless steel. The open position holding rod assembly includes a sleeve for unlocking the hold rod assembly in the open position even while the hold rod assembly in the open position is under compression. The bar is able to support the compression load even with the unlocked sleeve.
    [0022] In the illustrative embodiments, a user or operator then raises the fan cowl supported by the bar to fully extend the bar and disengage the lock mechanism. Once the locking mechanism is disengaged, the user can close the blower cover and reset the locking mechanism in an "armed" condition so that it locks again once the blower cover is reopened. . A rubber friction damper can be used to pre-load the bar laterally when stored. The axial pre-load of the bar is not feasible due to the length of the displacement. In the illustrative embodiments, the bar is movable between a retracted position, an extended position and a vibration position between the retracted and extended positions. The locking mechanism is mounted on the inner tube and an unlocking sleeve. The release sleeve can be pulled straight along the inner tube. A flag system is included to indicate a blocked or unblocked condition of the bar to an operator. In the illustrative embodiments, the locking mechanism comprises three locking pins that extend outwardly to lock in a groove formed in the outer tube. The movement of the locking pins is provided by a compression spring acting on a plunger engaged with the locking pins. The release sleeve is engaged with the locking mechanism. A cartridge assembly of the locking mechanism blocks the bar when extended and allows the bar to support compressive and tension loads. In the illustrative embodiments, the plunger is urged toward the locking pins by the compression spring to pre-load the locking pins outwardly. Once the locking pins 35 reach a groove in the outer tube, the plunger drives the locking pins outward to extend into the groove. The release sleeve is connected to and moves with the plunger. Compression and tension forces are transferred to the surfaces of the locking pins and the groove of the outer tube. A green stripe uncovered by the release sleeve indicates that the bar is in a locked condition. In the illustrative embodiments, the release sleeve is pulled to reveal a red stripe indicating that the bar is in an unblocked condition. The release sleeve pulls the plunger axially and is held in place by an internal ball lock mechanism. The locking pins are held in place by the compressive loads on the bar and the frictional forces with a ball expansion set. In the illustrative embodiments, the operator raises the fan cowl to the fully open position which extends the bar to drive the lock pins inwardly. The ball trigger assembly holds the pin in place so that the bar can be retracted. An inner sleeve of the ball lock mechanism contacts a plug of the outer tube as the bar is retracted to reset the lock mechanism. The plunger retracts and is reset. While this description describes various exemplary embodiments, the invention is not limited. On the contrary, the description is intended to cover different modifications, uses, adaptations and different equivalent arrangements according to the principles described. In addition, the present application is intended to cover such modifications of the present invention since they are within the limits of practice at least known or customary in the art to which it belongs. It is contemplated that those skilled in the art may design different modifications and equivalent structures and functions without departing from the spirit and scope of the description as set forth in the following claims. The scope of the following claims must be consistent with the broadest meaning to encompass such modifications and equivalent structures and functions.
    权利要求:
    Claims (9)
    [0001]
    REVENDICATIONS1. An open-position holding rod assembly (28, 228) comprising: an outer tube (30, 230), an inner tube (32, 232) extending into the outer tube (30, 230) and configured to slide relative to to the outer tube (30, 230) between a fully folded position in which the inner tube (32, 232) is substantially received in the outer tube (30, 230) and a fully extended position in which the inner tube (32, 232) is extended away from the outer tube (30, 230), and a locking mechanism (50, 250) positioned within the outer tube (30, 230) and comprising a housing (92, 292) coupled to the inner tube ( 32, 232), one or more locking pins (94, 294) extending into the housing and a plunger (90, 290) extending into the housing (92, 292) for engagement with the pins latch (94, 294), the locking mechanism (50, 250) being coupled to the inner tube (32, 232) for movement with the inner tube e (32, 232), wherein the locking mechanism (50, 250) is configured to engage the outer tube (30, 230) to prevent movement of the inner tube (32, 232) relative to the tube external (30, 230) when the inner tube (32, 232) reaches the fully expanded position.
    [0002]
    An open position holding rod assembly according to claim 1, further comprising an inner body (78,278) coupled to the inner tube (32,232), wherein the housing is housed within the inner body ( 32, 232) and wherein the locking pins (94, 294) extend through the inner body (32, 232) to the outer tube (30, 230).
    [0003]
    The open position holding rod assembly of claim 2, further comprising a plunger biasing device (134) engaged with the inner body (32) and the plunger (90) for biasing the plunger (90) to the locking pins (94).
    [0004]
    An open position holding rod assembly according to claim 2 or 3, further comprising a rod (110,201) coupled to the housing (92,292) for extending away from the housing (92,292) and wherein the locking mechanism (50, 250) further comprises a plunger displacement control member (101, 201) engaged with the rod (110, 210) and the plunger (90, 290) and 3025548 22 configured to control movement of the plunger (90, 290) relative to the housing (92, 292).
    [0005]
    The open position holding rod assembly of claim 4, wherein the plunger moving control member (101, 201) comprises a bushing (109, 209) positioned to surround the rod (110, 210). ), one or more ball bearings (124, 224) received in one or more holes (126, 226) extending through the shank (110, 210) and a compression spring (114, 214) positioned between the socket (109, 209) and the housing (92, 292) to bias the bushing (109, 209) away from the housing (92, 292) and into which the ball bearing (124, 224) engages with the plunger (90, 290) and the bushing (109, 209) for controlling the displacement of the plunger (90, 290) relative to the housing (92, 292). 15
    [0006]
    The open position holding rod assembly of claim 2, 3 or 5, wherein the plunger (90, 290) is formed to include a ramp (160, 261) configured to engage the pins of locking (94, 294) for biasing the locking pins (94, 294) radially outwardly to the outer tube (30, 230). 20
    [0007]
    An open position holding rod assembly according to claim 6, wherein the outer tube (30,230) comprises an inner annular groove (163,263) and wherein the plunger (90,290) forces the pins of locking (94, 294) in the groove (163, 263) of the outer tube (30, 230) when the inner tube (32, 232) reaches the fully extended position and the locking pins (94, 294) are aligned with the groove (163, 263).
    [0008]
    The open position holding rod assembly of claim 7, further comprising an unlocking sleeve (180,280) coupled to the plunger (90,290) and configured to move the plunger (90,290) through to the housing (92, 292) upon selection of a user, to allow the locking pins (94, 294) to be removed from the groove (163, 263) of the outer tube (30, 230) and allow moving the inner tube (32, 232) relative to the outer tube (30, 230). 35
    [0009]
    The open position holding rod assembly of claim 2, 3, 5 or 8, further comprising a first coupling assembly coupled to the inner tube and a second coupling assembly coupled to the outer tube, the connecting assemblies 3025548 23 being configured to engage a motor assembly (10) to maintain a panel (13, 15) of the motor assembly in an open position. 5 10 15 20 25 30 35
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    同族专利:
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    法律状态:
    2016-09-26| PLFP| Fee payment|Year of fee payment: 2 |
    2017-09-25| PLFP| Fee payment|Year of fee payment: 3 |
    2018-08-17| PLSC| Publication of the preliminary search report|Effective date: 20180817 |
    2018-09-25| PLFP| Fee payment|Year of fee payment: 4 |
    2019-09-25| PLFP| Fee payment|Year of fee payment: 5 |
    2020-09-25| PLFP| Fee payment|Year of fee payment: 6 |
    2021-09-27| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    US201462046088P| true| 2014-09-04|2014-09-04|
    US62046088|2014-09-04|
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