• 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:
    The present invention relates to a protective screen assembly for use with a power tool, comprising a grinding screen and a cutting screen. The cutting screen has a mounting axis, along which the grinding screen can be integrated with the corresponding power tool. The grinding screen includes a grinding stop plate, a grinding side plate, and a mounting portion. The cutting screen includes a cutting stop plate, a cutting side plate and a locking assembly. The grinding side plate is provided with positioning pins and the cutting side plate is provided with positioning holes. When the locating pins pass through the positioning holes, the blocking assembly can integrate the grinding screen and the cutting screen in two modes, so as to perform different functions. In addition, the locking assembly is designed as a quick clamp, facilitating the transition from one mode to another.
    公开号:FR3023205A3
    申请号:FR1556419
    申请日:2015-07-07
    公开日:2016-01-08
    发明作者:Jiankang Li
    申请人:Chevron Intellectual Property Ltd；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a protective screen assembly for use with a power tool. The power tool is generally connected to a workpiece by its rotary attachment, for the performance of a cutting or grinding function, such a tool can thus be called grinding tool. Fixing such a tool is usually a circular saw blade or a grinding wheel, and a screen is generally provided on the grinding tool to protect the operator. In general, the screen is typically mounted on the power tool along an axis of rotation of the attachment of the power tool. There are two kinds of screens, a kind consisting of a grinding screen allowing the fastener to be opened on one side in the direction of the axis of rotation of the fastener, so as to increase the grinding area fixing, that is to say, a semi-closed screen; and the other kind consists of a cutting screen allowing the fastener to be completely closed on both sides in the direction of the axis of rotation of the fastener, and to cut by means of a part making projection, that is to say in a completely closed screen. The power tool of the present invention employs different screens for performing a grinding operation and a cutting operation. During actual use, the power tool must be switched between the two operating states, so the screen must be replaced. Therefore, the screen should be replaced according to the actual requirements, which is very complicated. The present invention provides a shield assembly for use with a power tool, comprising a grinding screen having a mounting axis; and a cutting screen releasably connected to the grinding screen, the grinding screen including an integral mounting portion in the power tool along the mounting axis, a grinding stop plate having a sector surface having the mounting axis as a center, a grinding side plate comprising an arcuate surface provided on an edge of the grinding plate, and a plurality of locating pins protruding from an outer surface of the grinding plate; grinding side plate, in a radial direction of the mounting axis, at least one of the plurality of locating pins being provided with a locking groove; the cutting screen comprising a cutting stop plate having a sector area corresponding to the area surface of the grinding stop plate, a cutting side plate having an arcuate surface arranged on an edge 5 of the plate cut-off stop and outside the grinding side plate with respect to the mounting axis, and a locking assembly arranged on an arcuate surface outside the cutting side plate, the side plate of cutout being provided with a plurality of positioning holes for cooperating with the plurality of locating pins, and the locking assembly comprising a locking loop for cooperating with the locking groove, a key rotatably connected to the locking groove and forming a rotary connection with the cutting screen. In addition, at least one of the plurality of positioning pins includes a stop portion for limiting a position of the cutting screen in the radial direction of the mounting axis, and a connecting portion for connect the stopping portion and the side grinding plate; and at least one of the plurality of locating holes includes an insertion portion allowing the stopping portion to traverse the cutting side plate along the radial direction of the mounting axis, and a portion of a guide for preventing the stopping portion from traversing the cutting side plate along the radial direction of the mounting axis, the guide portion having a smaller size in the direction of the mounting axis than the the insertion part in the direction of the mounting axis. In addition, the locking groove and the stop portion are arranged on different positioning pins. In addition, the positioning hole corresponding to the locating pin provided with the locking groove has a larger size in the circumferential direction of the mounting axis than that of the locating hole provided with the insertion portion and the portion in the circumferential direction of the mounting axis. In addition, the stop portion has a smaller size in the direction of the mounting axis than that of the insertion portion in the direction of the mounting axis, and greater than that of the guide portion in the direction of the mounting axis. the direction of the mounting axis.
    [0002] In addition, the connecting portion has a smaller size in the direction of the mounting axis than that of the guide portion in the direction of the mounting axis. In addition, the number of positioning nipples is three, one of which is provided with a locking groove, and the other two are provided with the stop portion and the connecting portion and respectively arranged on two sides of the positioning pin provided with the locking groove. In addition, the cutting side plate is provided with an end slot for locking one of the locating pins arranged on both sides, and the end notch is arranged at one end of the cutting side plate. and has a maximum size in the direction of the mounting axis on an end edge of the cutting side plate. In addition, the maximum size of the end notch in the direction of the mounting axis is smaller than that of the corresponding stop portion in the direction of the mounting axis, and greater than that of the portion of the end portion. corresponding connection in the direction of the mounting axis. In addition, the mounting portion comprises a mounting strip having two free ends, a locking pin passing through the two free ends of the mounting strip, and a control member rotatably connected to one end of the locking pin, the control element forcing a free end of the mounting strip to approach the other free end as the control element rotates. Fig.1 is a schematic view showing a preferred embodiment of a shield assembly of the present invention in a slicing mode. Fig. 2 is a schematic view of the embodiment of FIG. 1 in a grinding mode. FIG. 3 is an exploded schematic view of the embodiment of FIG. 1. FIG. 4 is a schematic view showing the shield assembly of FIG. 1 integrated in a power tool. Fig. 5 is a schematic view showing the protective shield assembly of FIG. 2 integrated in a power tool. As shown in Figs. 1-5, a protective screen assembly 100 includes a grinding screen 10 and a cutting screen 20. The grinding screen 10 has a mounting axis c, along which the grinding screen 10 can be integrated in a corresponding power tool 200. Specifically, the grinding screen 10 comprises a grinding stop plate 12, a grinding side plate 12 and a mounting portion 11. The grinding stop plate 12 comprises a sector surface having the grinding axis mounting c as a center, and serves to cover one side of a fastener 201 of the power tool 200 in the direction of the mounting axis c and stops the flying chips and chips caused by the grinding operation. In general, when the grinding screen 10 is mounted on the electric tool 200, the grinding stop plate 12 is arranged between an operator and the attachment 201 of the electric tool 200. The grinding side plate 13 comprises an arcuate surface arranged on an edge of the grinding stop plate 12. The arcuate surface substantially takes the mounting axis c as a center and serves to cover a certain area of the attachment 201 of the electric tool 200. in the circumferential direction of the mounting pin c and stops the foreign matter and flying chips in the radial direction of the mounting axis c due to the action of the centrifugal force. To enable the cutting screen 20 to be mounted on the grinding screen 10, a plurality of locating pins 14, 15 and 16 are arranged on the outer side of the grinding side plate 13 and project from the grinding side plate 13, substantially in the radial direction of the mounting axis c. A positioning pin 15 is provided with a locking groove 151. The cutting screen 20 comprises a cutting stop plate 21, a cutting side plate 22 and a locking assembly 23. The stop plate cutter 21 comprises a sector surface arranged to correspond to the surface area of the grinding stop plate 12 and intended to cooperate with the grinding stop plate 12 to cover the other side of the attachment 201 of the electric tool 200 in the direction of the mounting axis c in the cutting mode, as shown in Fig.l. The cutting side plate 22 comprises an arcuate surface arranged on an edge of the cutoff stop plate 21 and outside the grinding side plate 13 with respect to the mounting axis c. The cutting side plate 22 is arranged to correspond to the position of the grinding side plate 13 in the cutting mode, as shown in FIG. 1, to allow mounting of the cutting screen 20 on the grinding screen 10. More specifically, the cutting side plate 22 is provided with a plurality of positioning holes 221 and 222 corresponding to the positioning pins. The positioning studs 14, 15, 16 pass through the positioning holes 221 and 222 and then cooperate with the locking assembly 23 to integrate the grinding screen 10 and the cutting screen 20 with each other.
    [0003] The locking assembly 23 comprises a locking loop 231 and a key 232. The locking loop 231 is used to cooperate with the locking groove 151, and the key 232 is rotatably connected to the locking loop 231 and forms a rotary connection with the cutting screen 20. When the key 232 rotates in a positive direction, the locking loop 231 can be locked in the locking groove 151, and when the key 232 rotates in a negative direction, the Lock 231 can be released from the locking groove 151. In a preferred embodiment, as shown in FIGS. 1-5, three locating pins 14, 15, 16 are arranged on the outer side of the grinding side plate 13.
    [0004] The positioning pin 14 includes a stop portion 141 and a connecting portion 142, and the positioning pin 16 includes a stop portion 161 and a connecting portion 162. The stop portions 141 and 161 are used to limiting the position of the cutting screen 20, and the connecting portions 142 and 162 are used to connect the stop portions 141 and 161 and the grinding side plate 13. Correspondingly, the cutting side plate 22 is provided with two locating holes 221, 222 and an end slot 24. A locating hole 222 includes an insertion portion 222a and a guide portion 222b. The insertion portion 222a allows the stop portions 141 and 161 to pass through the cutting side plate 22 in the radial direction of the mounting pin c, and the guide portion 222b prevents the stop portions 141 and 161. passing through the cutting side plate 22 in the radial direction of the mounting axis c. Specifically, the guide portion 222b has a smaller size in the direction of the mounting axis c than that of the insertion portion 222a in the direction of the mounting axis c. In another embodiment, the stop portions 141 and 161 have a smaller size in the direction of the mounting axis c than that of the insertion portion 222a in the direction of the mounting axis c; the stop portions 141 and 161 having a larger size in the direction of the mounting axis c than that of the guide portion 222b in the direction of the mounting axis c; and the connecting portions 142 and 162 have a smaller size in the direction of the mounting axis c than that of the guide portion 222b in the direction of the mounting axis c. The end notch 24 is used to lock one of the locating pins 14 and 16, and arranged at one end of the cutting side plate 22. The end notch 24 has a maximum size in the direction of the mounting pin c on an edge of the cutting side plate 22. The end notch 24 has a function similar to that of the positioning hole 222, and because of the arcuate angle of the side plate of 22, the end notch 24 is configured to be a notch facilitating assembly. In a preferred embodiment, the maximum size of the end notch 24 in the direction of the mounting axis c is smaller than that of the corresponding stop portion in the direction of the mounting axis c. ; the maximum size of the locking notch 24 in the direction of the mounting axis c is greater than that of the corresponding connecting part in the direction of the mounting axis c. As shown in Figs. 1 and 4, when the protective shield assembly 100 is in the cutting mode, the grinding screen 10 and the cutting screen 20 are integrated by respectively arranging the grinding stop plate 12 and the plate 2 at which point the end notch 24 blocks the locating hole 14, and the locating pin 15 passes through the locating hole 24. 221 and protrudes out of the cutting side plate 22. The positioning hole 222 blocks the positioning pin 16, and during this time, the locking loop 231 blocks the locking groove 151 of the positioning pin 15, thus blocking the grinding screen 10 with the cutting screen 20.
    [0005] During disassembly, the key 232 is first turned so that the locking loop 231 does not block the positioning pin 15, and the grinding screen 10 and the cutting screen 20 can turn the latch. one relative to the other around the mounting axis c. When rotating the grinding screen 10 or the cutting screen 20, the positioning pin 16 rotates from the end of the guide portion 222b of the positioning hole 222 to the insertion portion 222a. During rotation, the end notch 24 is released from the locating pin 14, and the locating pin 15 is moved to another position relative to the locating hole 221. Then, the cutting screen 20 is moved into a direction perpendicular to the mounting axis c, and at this time, the stop portion 161 of the positioning pin 16 is aligned with the insertion portion 222a and does not limit the position of the display screen. cutting 20, the cutting screen 20 can thus be disassembled from the grinding screen 10. The assembly process of the grinding screen 10 and the cutting screen 20 is the reverse of the disassembly process ci -above. In a preferred embodiment, to allow the positioning pin 15 to move in sufficient space, the positioning hole 221 has a larger size in the circumferential direction of the mounting axis c than that of the mounting hole 222 in the circumferential direction of the mounting axis c, or the arc angle of the positioning hole 221 in the circumferential direction of the mounting axis c is greater than that of the mounting hole 222 in the circumferential direction of the mounting axis c.
    [0006] As shown in Figs. 2 and 5, when the protective shield assembly 100 is in the grinding mode, the grinding screen 10 and the cutting screen 20 are integrated by arranging the grinding stop plate 12 and the grinding plate. cutting stop 21 on the same side of the attachment 201 of the power tool 200. At this point, the end notch 24 blocks the positioning pin 16 and the positioning stake 15 passes through the positioning hole 221 and protrudes out of the cutting side plate 22. The positioning hole 222 blocks the locating pin 14, and during this time, the locking loop 231 blocks the locking groove 151 of the locating pin 15, thereby blocking the locating pin grinding screen 10 with the cutting screen 20. In this mode, the assembly and disassembly operations are the same as in the mode above. In order to obtain the two above assembly modes, in a preferred embodiment, the positioning pins 14 and 16 are arranged symmetrically. First, the positioning studs 14 and 16 are arranged symmetrically with respect to the positioning stake 15. Next, the positioning studs 14 and 16 are arranged symmetrically with respect to the mounting pin c. The mounting portion 11 is integrated in the power tool 200 along the mounting axis c, and the grinding screen 10 and the power tool 200 are thus integrated into each other. In a preferred embodiment, the mounting portion 11 includes a mounting strip 111, a locking pin 112 and a control member 113. The mounting strip 111 has two free ends 111a and 111b, the locking pin 112 extends through both ends of the mounting strip 111, and the control member 113 is rotatably connected to one end of the locking pin 112. The control member 113 allows the two free ends 111a and 111b of the strip The above discussion illustrates and describes the basic principles, features, and main advantages of the present invention. Those skilled in the art will appreciate that the above embodiments in no way limit the present invention. Technical solutions obtained by equivalent substitutes or equivalent modifications all fall within the scope of the present invention.
    权利要求:
    Claims (10)
    [0001]
    REVENDICATIONS1. A shield assembly for use with a power tool, comprising: a grinding screen having a mounting axis; and a cutting screen releasably connected to the grinding screen; the grinding screen comprising: a mounting portion integral with the power tool along the mounting axis; a grinding stop plate having a sector surface having the mounting axis as a center; a grinding side plate having an arcuate surface provided on an edge of the grinding stop plate; and a plurality of locating pins protruding from an outer surface of the grinding side plate, in a radial direction of the mounting axis; at least one of the plurality of locating pins being provided with a locking groove; the cutting screen comprising: a cutting stop plate having a sector surface arranged to correspond to the area surface of the grinding stop plate; a cutting side plate having an arcuate surface provided on an edge of the cutting stop plate and outside the grinding side plate with respect to the mounting axis; and a lock assembly arranged outside the cutting side plate; the cutting side plate being provided with a plurality of locating holes for cooperating with the plurality of locating pins; the locking assembly comprising: a locking loop for cooperating with the locking groove; and a key rotatably connected to the locking loop and forming a rotational connection with the cutting screen.
    [0002]
    A shield assembly according to claim 1, wherein at least one of the plurality of locating pins includes: a stopping portion for limiting a position of the cutting screen; and a connecting portion for connecting a stop portion and the grinding side plate; wherein at least one of the plurality of locating holes comprises: an introducer portion allowing the stopping portion to pass through the chopper side plate along the radial direction of the mounting shaft; and a guide portion for preventing the stop portion from passing through the cutting side plate along the radial direction of the mounting pin; the guide portion having a smaller size in the direction of the mounting axis than that of the insertion portion in the direction of the mounting axis.
    [0003]
    A shield assembly according to claim 2, wherein the locking groove and the stopping portion are arranged on different locating pins.
    [0004]
    A shield assembly according to claim 3, wherein the locating hole corresponding to the locating stud with the locking groove has a larger size in a circumferential direction of the mounting pin than that of the locating hole. provided with the introduction portion and the guide portion in the circumferential direction of the mounting axis.
    [0005]
    A shield assembly according to claim 2, wherein the stop portion has a smaller size in the direction of the mounting axis than that of the insertion portion in the direction of the mounting axis. and greater than that of the guide portion in the direction of the mounting axis.
    [0006]
    A shield assembly according to claim 2, wherein the connecting portion has a smaller size in the direction of the mounting axis than that of the guide portion in the direction of the mounting axis.
    [0007]
    A shield assembly according to claim 2, wherein the number of positioning pins is three, one of which is provided with a locking groove and the other two are provided with the stop portion and of the connection part and respectively arranged on two sides of the positioning pin provided with the unlocking groove:
    [0008]
    A shield assembly according to claim 7, wherein the cutting side plate is provided with an end notch for locking one of the locating pins arranged on both sides, and the notch The end is arranged at one end of the cutting side plate and has a maximum size in the direction of the mounting axis at an end edge of the cutting side plate.
    [0009]
    A shield assembly according to claim 8, wherein the maximum size of the end notch in the direction of the mounting axis is less than that of the corresponding stop portion in the direction of the mounting axis. mounting axis, and greater than that of the corresponding connecting portion in the direction of the mounting axis.
    [0010]
    The shield assembly of claim 1, wherein the mounting portion comprises: a mounting strip having two free ends; a locking pin passing through the two free ends of the mounting strip; And a control member rotatably connected to one end of the locking pin; the control element forcing a free end of the mounting strip to approach the other free end when the control member rotates.
    类似技术:
    公开号 | 公开日 | 专利标题
    FR3023205A3|2016-01-08|PROTECTIVE HOUSING FOR MOTORIZED TOOL
    CA2456014C|2011-09-20|Assembly to retain an annular flange against a radial surface of a disk
    US8453292B2|2013-06-04|Connecting device for connecting wiper blade to wiper arm
    JP5735703B2|2015-06-17|Folding knife
    EP0061948A1|1982-10-06|Rotor of a turboreactor, especially of a fan, comprising devices for securing the fan blades and for fixing the frontal rotor cap
    US3604188A|1971-09-14|Cutting blade attachment for a mower
    FR2979647A1|2013-03-08|MECHANICAL SYSTEM COMPRISING A DEVICE FOR CONNECTION BETWEEN A WEAR PIECE AND ITS SUPPORT, PUBLIC WORKS MACHINE BUCKET AND METHOD OF IMPLEMENTING SUCH A SYSTEM
    FR2961657A3|2011-12-30|WORK HEAD FOR A ROTARY BRUSHCUTTER
    FR3010972A1|2015-03-27|PROPELLER ASSEMBLY AND PROPELLER BLADE RETENTION ASSEMBLY
    FR2967205A1|2012-05-11|TURBINE ASSEMBLY AND METHOD FOR FASTENING A CLOSURE FIN
    EP3130419A1|2017-02-15|Adapter for a boring grate and boring grate provided with said adapter
    EP2883711B1|2019-10-30|Drawing compass with position locking
    EP1963174B1|2013-04-17|Demountable cable cutter
    JPWO2015037030A1|2017-03-02|Rotating body, brush cutter and mowing method
    FR2926112A1|2009-07-10|THRUST INVERTER WITH DOORS FOR TURBOJET ENGINE
    CA2984989A1|2016-11-10|Device, system and method for protecting an edge of a bucket
    US20080211154A1|2008-09-04|Apparatus Including Spring and Method For Tensioning the Same
    FR2690718A1|1993-11-05|Safety device for holding tools automatically - comprises conical tip cooperating with conical orifice,and bolting assembly and also having holding member corresponding to, and cooperating with bolting assembly to retain tool with predetermined play
    FR3066934B1|2019-08-23|ROTARY CUTTING DEVICE
    FR3002112A1|2014-08-22|Garden scissor, has adjustment element placed in swiveling manner on handle such that groove is in play with teeth, and angle restriction element that is rotated by helicoid part so as to change maximum cut angle of chisel element
    US20100206151A1|2010-08-19|Quick-detachable saw blade guard assembly for circular saw
    FR2991291A1|2013-12-06|Device for manual retraction of blades on rotor of rotorcraft, has reel for blocking rotation of blade root around pin and releasing pin for allowing rotation of blade when blade is folded-up by translation of reel toward rotor center
    EP3232764B1|2018-04-18|Mowing or grinding device
    FR2964008A3|2012-03-02|CUTTING CUTTING WITH CUTTING HEAD
    JP5758822B2|2015-08-05|Protective cover that prevents the fastening member of the brush cutter from grounding
    同族专利:
    公开号 | 公开日
    DE202015103412U1|2015-07-08|
    CN204076022U|2015-01-07|
    FR3023205B3|2016-07-29|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2020026747A1|2018-08-01|2020-02-06|株式会社マキタ|Wheel cover for electric tool|
    DE102019220621A1|2019-12-30|2021-07-01|Robert Bosch Gmbh|Hand machine tool device, hand machine tool with the hand machine tool device and accessories with the hand machine tool device|
    DE102019220625A1|2019-12-30|2021-07-01|Robert Bosch Gmbh|Hand machine tool device, hand machine tool with the hand machine tool device and accessories with the hand machine tool device|
    法律状态:
    2016-06-13| PLFP| Fee payment|Year of fee payment: 2 |
    2018-04-27| ST| Notification of lapse|Effective date: 20180330 |
    优先权:
    申请号 | 申请日 | 专利标题
    CN201420373793.7U|CN204076022U|2014-07-07|2014-07-07|The dual-purpose guard shield of grinding tool|
    [返回顶部]