CN100540229C

CN100540229C - Tighten or unscrew the spanner of moment to the anti-theft screw device transmission

Info

Publication number: CN100540229C
Application number: CNB200680028525XA
Authority: CN
Inventors: 格雷戈里·肖博; 洛朗·朗帕埃特
Original assignee: Forges De Froncles S A Soc D
Current assignee: Forges De Froncles S A Soc D
Priority date: 2005-08-03
Filing date: 2006-07-12
Publication date: 2009-09-16
Anticipated expiration: 2026-07-12
Also published as: FR2889475A1; CN101237961A

Abstract

The present invention relates to spanner, it is used for to anti-theft screw device (1), especially the anti-theft screw device transmission of the wheel moment of tightening or unscrewing, wherein, described screw device (1) comprises head (11), described head (11) has the circumferential and/or surperficial notch of arranging by irregular angle (13), and described spanner (2) is a socket type, described spanner internal configurations has pin or refers to bar (23), described pin or refer to that bar (23) is according to identical arrangement mode setting, and be used for cooperating with described circumferential and/or surperficial notch (13) so that realize can transmission torque connection.Described pin or refer to that bar (23) is by can axially movable mode installing, so that they each when being subjected to positive the promotion, be retracted in the groove (22), thereby, under the situation that the notch (13) of described head (11) is provided with according to another arrangement mode, described pin or refer to that bar (23) is in and prevent to carry out any position that cooperates with described notch.

Description

Tighten or unscrew the spanner of moment to the anti-theft screw device transmission

Technical field

[01] the present invention relates to spanner, it is used for the moment of tightening or unscrewing to the anti-theft screw device transmission of anti-theft screw device, especially wheel, in such spanner, connect by the type groove of coupling and realize, the shape of described type groove, size and characteristic is set constitutes a coding.

Background technology

[02] traditionally, the wheel of motor vehicles is fixed by screw rod, and screw head is a hexagon, and it can transmit the moment of tightening or unscrewing.

[03] in order to remove wheel, propose at present, for each wheel, at least one screw rod has a head that needs special spanner to operate with preventing third party's fraudulent.

[04] known have a lot of screw devices etc. to have code device, and for example GB 2,006,371, FR2,359,730 and FR 2,567,215 described in those devices.These devices comprise a screw rod on the one hand, its head has the circumferential and/or surperficial notch that is provided with by irregular angle, comprise a socket type spanner on the other hand, it disposes pin or refers to bar, described pin or refer to that bar is with identical order setting, and cooperate with described notch, with realize can transmission torque connection.

[05] yet, possible is, wanting to unclamp as mentioned above for one, the malice people of screw rod obtains an original spanner, this spanner is identical with the spanner of described screw rod, and obviously has different codings, and, he knows, some pins or refer to that bar can place in position randomly, and reach by exerting oneself and to make described spanner distortion, thereby realize unclamping described screw rod.

[06] in fact can find a spanner, it has two pins or refers to bar, described two pins or refer to that bar is according to an angle setting, the angle that forms between two notches of described angle and the screw rod that will promote is identical, and collide with the material front other pin or refer to that wiper hammer breaks described material and be used for carry-over moment.

Summary of the invention

[07] the purpose of this invention is to provide a kind of spanner, it is used for the moment of tightening or unscrewing to the anti-theft screw device transmission of anti-theft screw device, especially wheel, and it uses on fraudulent ground in the above described manner.

[08] according to spanner of the present invention, it is used for to anti-theft screw device, especially the anti-theft screw device transmission of the wheel moment of tightening or unscrewing, described screw device comprises head, described head has the circumferential and/or surperficial notch of arranging by irregular angle, and described spanner is a socket type, described spanner internal configurations has pin or refers to bar, described pin or refer to that bar is according to identical arrangement mode setting, and be used for cooperating with described circumferential and/or surperficial notch, so that realize can transmission torque connection, described spanner is basic to be characterised in that, described pin or refer to that bar is by can axially movable mode installing, so that they each when being subjected to positive the promotion, be retracted in the groove, thereby, under the situation that the notch of described head is provided with according to another arrangement mode, described pin or refer to that bar is in and prevent to carry out any position that cooperates with described notch.

[09] thereby, has a die cavity corresponding to the good qualification of encoding according to spanner of the present invention, this die cavity is limited by the pin of axially installing retractedly, thereby, do not have at screw rod under the situation of this corresponding die cavity, described spanner is inserted into and can causes described finger bar or pin withdrawal on the described die cavity, therefore can not mesh, and then can not carry-over moment.

[10] should be noted that, from US 5,193,420 and WO 97/14539 in as can be known, be used for spanner to carry-over moments such as screw rods, comprise multiple vertically independent withdrawal parallel pin, refer to bar or needle body, thereby, because this regracting, described spanner can adopt and complementary type body such as described screw rod, so that can carry-over moment.This spanner must not be as the spanner of anti-theft screw, and its actual purpose is opposite with purpose of the present invention, pin or refer to that the purpose of the regracting of bar is to prevent this flexibility at this.

[11] can not will force to be placed on the screw rod, because this simple trial that allows spanner contact unaccommodated screw rod causes failing to be placed on exactly the pin on notch opposite or refers to the bar withdrawal according to spanner of the present invention.Yet, still can use this spanner to rotate.In fact, if owing to can not center, a pin or refer to that bar can not transmit necessary moment only, but what can reach is that two pins or refer to that bar can arrange angledly are so that carry out this transmission.

[12] therefore, according to the favourable supplementary features according to spanner of the present invention, described spanner comprises jockey, and described jockey can make all pins or refer to that bar links to each other by the mode that moves.

[13] thereby, in case single pin or refer to that bar can not be inserted in the notch, all pins or refer to bar lifting in spanner simultaneously, and can not transmit any moment fully.

[14] according to a specific embodiment according to spanner of the present invention, described spanner is the form of sleeve, it comprises the chamber that is limited by the wall in the inner surface, is furnished with seat groove longitudinally in it, described seat groove is sized and is configured as is used for each groove reception one finger bar or pin, described finger bar or pin can move axially in described seat groove, and can cooperate with circumferential notch, and the head of described screw rod has described circumferential notch.

[15] according to the supplementary features according to the specific embodiment of spanner of the present invention, comprise an insert in described chamber, described insert can be pressed axially movable mode activity in described chamber, and described finger bar or pin are articulated on the described insert.

[16] according to another supplementary features according to the specific embodiment of spanner of the present invention, described insert is roughly tubulose, and has a circumferential edge, and described finger bar or pin have recess or similar body in side direction, described recess can with described edge mate, to guarantee articulating within it.

[17] according to another supplementary features according to the specific embodiment of spanner of the present invention, described pin or refer to that bar is cylindrical, the described recess that articulates usefulness is made of circumferential groove.

[18] according to another supplementary features according to spanner of the present invention, described pin or refer to bar and described seat groove---described pin or refer to that bar is installed in the described seat groove versatilely---is sized into feasible, described pin or refer to bar and described seat groove closely cooperates, to produce enough frictional force, and then prevent the invertibity of withdrawing, this withdrawal may since the gravity effect produce.

[19] no matter according to which form of implementation of spanner of the present invention, this feature even make more difficult malice use this spanner.

[20] yet, should be noted that and can consider to make this pin or refer to the possibility that bar returns by gravity or by spring assembly.

Description of drawings

[21] with reference to accompanying drawing, by following explanation, can clearerly draw advantage and feature according to spanner of the present invention, accompanying drawing provides non-limiting embodiment.

[22] wherein:

[23] provide can be by the perspective schematic view according to the anti-theft screw device of wrench operated of the present invention for Fig. 1.

[24] Fig. 2 provides the fragmentary, perspective view according to spanner of the present invention.

[25] Fig. 3 provides part signal and the profile according to the mid diameter plane of same spanner.

[26] Fig. 4 provides the perspective and the enlarged drawing of the part of same spanner.

[27] Fig. 5 provides signal and the profile according to the mid diameter plane of the part of same spanner and anti-theft screw device.

The specific embodiment

[28] with reference to Fig. 1, can see an anti-theft screw device 1, it is by foundation wrench operated of the present invention.

[29] anti-theft screw device 1 comprises that a hat has the threaded body 10 of head 11, and head comprises a cylindrical tube 12, and cylindrical shell is furnished with the circumferential notch of arranging by irregular angle 13, and it is used to tighten or unscrew the transmission of moment.

[30], can see one according to spanner 2 of the present invention, here referring now to Fig. 2 and 3, it is a form of sleeve, applicable to for example on a unshowned instrument, for this reason, spanner has a positive formula die cavity 24 that matches with traditional instrument on a side relative with open-position-side.

[31] spanner 2 has a chamber 20 that is limited by inwall 21 at its open-position-side, wherein is furnished with a groove 22, and its angular distribution is identical with the angular distribution of notch 13, and each groove is the shape of longitudinal fluting, has the semicircular cross-section of being roughly.

[32] with reference to Figure 4 and 5, can see, comprise that according to spanner 2 of the present invention one is used to be inserted into the insert 3 in the chamber 20, described insert 3 comprises a tubular portion 30, described tubular portion is portion and externally have a circumferential rib 31 at one end, and have an axial cylindrical shape styletable head 32 at the other end, be used for being inserted in the blind hole 25 of spanner 2 settings, in the bottom of described chamber 20.The size of the size of chamber 20 and insert 3 can make described insert 3 axially closely and freely move in chamber 20, and the sliding motion of styletable head 32 in blind hole 25 can guarantee an aid in guide.

[33] each groove 22 is used to receive one and refers to bar 23, and described finger bar 23 has the cylinder form of approximate match, and length is littler than the seat groove, so that can move axially within it.

[34] refer to that bar 23 comprises a circumferential recess 26, the width of described circumferential recess 26 allows closely to receive the circumferential edge 31 of insert 3, being hooked in the insert, thereby connects all finger bars 23 by the mode that insert 3 moves.

[35] in an illustrated embodiment, refer to that bar 23 closely is inserted in the seat groove 22 that is provided with between epidermis and the bearing, so that can not be freely mobile because of gravity within it, but only under the effect of axial thrust, can move, and insert 3 is by referring to that bar 23 remains in the chamber 20.

Know that [36] therefore insert 3 can move axially, and has two extreme positions---reentry position and deviate from the position.Deviating from the position, position promptly shown in Figure 4 refer to that bar 23 can cooperate with the notch 13 of the head 11 of anti-theft screw device 1, and in the reentry position, each refers to bar 23 in this is retracted to its groove 22, refer to bar can not and notch 13 cooperate.

[37] attempting under the situation of using spanner 2 on the screw rod 1 with different coding, at least one not finger bar 23 in notch 13 fronts forced back towards in its groove 22, cause other finger bar also to make described spanner to use by insert 3, all the more so when referring to that bar 23 can not be back to the position automatically.

[38] should be noted that, can limit head 11 is inserted in the chamber 20, when being resisted against in the chamber 20, prevent to refer to that bar 23 and notch 13 cooperate with convenient insert 3, this by sleeve 2 ora terminalis 27 and head 11 or realize with circumferential shoulder 14 butts of described head 11 more accurately.

[39] in addition, should be noted that screw rod can not comprise any circumferential shoulder, in this case, the ora terminalis 27 direct butts that can consider sleeve 2 are by screwing the object of connection.

Claims

1. spanner, it is used for to anti-theft screw device, (1) transmits the moment of tightening or unscrewing, wherein, described screw device, (1) comprises head, (11), described head, (11) have by angle ground and the circumferential and/or surperficial notch arranged brokenly, (13), and described spanner, (2) be socket type, described spanner internal configurations has pin or refers to bar, (23), described pin or refer to bar, (23) according to identical arrangement mode setting, and be used for and described circumferential and/or surperficial notch, (13) cooperate, so that realize can transmission torque connection

Described spanner (2) is characterised in that, described pin or refer to that bar (23) is by can axially movable mode installing versatilely, so that they each when being subjected to positive the promotion, be retracted in the groove (22), thereby, under the situation that the notch (13) of described head (11) is provided with according to another arrangement mode, described pin or refer to that bar (23) is in and prevent to carry out any position that cooperates with described notch;

And, described spanner (2) comprises the chamber (20) that is limited by the wall in the inner surface (21), is furnished with seat groove (22) longitudinally in the described chamber (20), described each groove is sized and is configured as is used for each groove reception one finger bar or pin (23), described finger bar or pin (23) can move axially in described seat groove, and can cooperate with described circumferential notch (13).

2. spanner as claimed in claim 1 is characterized in that described spanner comprises jockey, and described jockey can make all pins or refer to that bar (23) is connected with each other by the mode that moves.

3. spanner as claimed in claim 1, it is characterized in that, comprise an insert (3) in described chamber (20), described insert (3) can be pressed axially movable mode activity in described chamber, and described finger bar or pin (23) are articulated on the described insert (3).

4. spanner as claimed in claim 3, it is characterized in that, described insert (3) is roughly tubulose, and has a circumferential edge (31), and described finger bar or pin (23) each have recess (26) in side direction, described recess (26) can cooperate with described edge (31), to guarantee articulating in described recess (26).

5. spanner as claimed in claim 4, described pin or refer to bar (23) for cylindrical, the described recess (26) that articulates usefulness is made of circumferential groove.

6. as each described spanner in the above-mentioned claim, it is characterized in that, described pin or refer to that bar (23) is installed in the described seat groove (22) versatilely, described pin or refer to bar (23) and described seat groove (22) is sized into feasible: described pin or refer to bar (23) and described groove (22) closely cooperates, producing enough frictional force, and then prevent because the invertibity withdrawal that the gravity effect produces.

7. spanner as claimed in claim 1 is characterized in that, described anti-theft screw device is the anti-theft screw device of wheel.