JP3828634B2 - Steering lock device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a steering lock device in which a housing hole having a front end opened in a fixed housing is provided, and a rotor is inserted into a cylinder body inserted and fixed in the housing hole so that a rotation operation can be performed by a key.
[0002]
[Prior art]
Conventionally, such an apparatus is already known, for example, from Japanese Utility Model Publication No. 4-12843.
[0003]
[Problems to be solved by the invention]
In the above-described conventional steering lock device, in order to insert and fix the cylinder body in the housing, the cylinder body is provided with a mounting hole along the radial direction, and a retaining plate is provided so as to close the outer end of the mounting hole. Is fixed to the outer periphery of the cylinder body by caulking or the like, and an engagement pin engageable with an engagement hole provided in the housing is inserted into the attachment hole so that the retaining plate prevents the separation from the attachment hole. A spring is provided between the cylinder body and the engagement pin to exert a spring force in a direction in which the engagement pin is engaged with the engagement hole. However, in such a structure for inserting and fixing the cylinder body into the housing, the number of parts is relatively large, and a relatively large number of parts must be assembled, resulting in a relatively large number of assembly work steps.
[0004]
The present invention has been made in view of such circumstances, and allows the cylinder body to be inserted into and fixed to the housing with a simple configuration that can reduce the number of parts and the number of assembly work steps. An object of the present invention is to provide a steering lock device.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, a storage hole having a front end opened in a fixed housing is provided, and a rotation operation using a key is possible in a cylinder body inserted and fixed in the storage hole. In the steering lock device in which the rotor is inserted, the cylinder body is inserted into the storage hole so that relative rotation about the rotation axis of the rotor is impossible, and the outer periphery of the cylinder body is spaced from each other in the circumferential direction. A resilient engagement member having a pair of engagement ends that are respectively engaged and mounted, and a connecting portion that is formed in a mountain shape connecting the engagement ends. is constructed by bending a strip-shaped metal plate having a width direction and a direction along its resilient engagement member is in the pushed in the inner surface of the receiving hole upon insertion into receiving hole receiving groove of the cylinder body Can be stored Wherein while being disposed in the housing grooves as, its inner surface of the housing hole, the engaging groove occupying engage the central tip portion of the connecting portion protruding from the receiving groove is provided, the elastic engaging member, it with both widthwise side edges of the central tip portion of the connecting portion of, and the engaging respective opposite corresponding to the both inner side surfaces of the grooves to prevent axial movement within housing bore of the cylinder body And the top surface of the central tip part elastically contacts the engagement groove, and the cylinder body is rattled in the housing in a direction along one diameter line of the rotor passing through the contact point. It is characterized by being avoided .
[0006]
According to such a configuration, the elastic engagement member is engaged by inserting the cylinder body into the storage hole of the housing in a state in which the elastic engagement member is disposed in the storage groove and attached to the cylinder body. When the cylinder body is inserted to a position corresponding to the groove, the central tip of the connecting portion formed in a mountain shape of the elastic engagement member protrudes from the storage groove and elastically engages with the engagement groove. Thus, the cylinder body is prevented from moving along the rotation axis of the rotor. In other words, the only part required for insertion and fixation of the cylinder body into the housing is the elastic engagement member, which makes it possible to reduce the number of parts, and also only attach the elastic engagement member to the cylinder body. The work man-hour is also reduced. Further, the elastic engagement member is formed by bending a band-shaped metal plate whose width direction is along the rotation axis of the rotor, and both sides in the width direction of the central tip portion of the connecting portion of the elastic engagement member. The edges are opposite to the corresponding inner side surfaces of the engaging groove so as to prevent axial movement in the cylinder body storage hole, and thereby the elastic force in the direction along the rotational axis of the rotor The strength of the engaging member can be made relatively high, and the strength of the cylinder body coming off from the housing can be increased. Further, the connecting portion of the elastic engagement member has the top surface of the central tip portion elastically contacting the engagement groove, so that the housing of the cylinder body in the direction along the one diameter line of the rotor passing through the contact point. Shaking within is avoided.
[0007]
According to a second aspect of the present invention , there is provided a steering housing in which a housing hole having a front end opened is provided in a fixed housing, and a rotor is inserted into a cylinder body inserted and fixed in the housing hole so as to be able to be rotated by a key. In the locking device, the cylinder body is inserted into the storage hole so that relative rotation about the rotation axis of the rotor is impossible, and the outer periphery of the cylinder body is along a plane orthogonal to the rotation axis of the rotor. A storage groove is provided, and a resilient engagement member attached to the outer periphery of the cylinder body can be pushed into the storage groove and inserted into the storage groove when inserted into the storage hole of the cylinder body. Is disposed in the storage groove, and an inner surface of the storage hole is provided with an engagement groove for engaging with the elastic engagement member protruding from the storage groove. Times It is formed by bending a band-shaped metal plate with the direction along the axis as the width direction, and both side edges in the width direction of the elastic engagement member prevent axial movement in the storage hole of the cylinder body. The storage holes of the portions that are opposed to the corresponding inner side surfaces of the engaging groove and into which the cylinder body is inserted, extend in parallel with each other along one diameter line of the rotor. The cylinder body may be brought into contact with the wall surface and between the first and second inner wall surfaces and between the third inner wall surface provided with the engagement groove and the other ends of the first and second inner wall surfaces. The elastic engagement member formed to have a cross-sectional shape composed of a fourth inner wall surface and engaged with the engagement groove is engaged in a plane perpendicular to the axis of the rotor. It can be elastically brought into contact with the groove and the first and second inner walls And wherein the [0009]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.
[0010]
1 to 20 show an embodiment of the present invention. FIG. 1 is a vertical side view of a steering lock device in a state where the rotor is in the ACC position, and FIG. 2 is a state in which the rotor is in the LOCK position. FIG. 3 is a sectional view taken along the arrow 3 in FIG. 2, FIG. 4 is an enlarged sectional view taken along line 4-4 in FIG. 1, and FIG. 5 is a rotor along the line 5-5 in FIG. 6 is an enlarged sectional view of the rotor and the key slider taken along line 6-6 in FIG. 2, FIG. 7 is a perspective view of the key slider, and FIG. 8 is an enlarged sectional view taken along line 8-8 in FIG. 9 is an enlarged sectional view taken along line 9-9 of FIG. 2, FIG. 10 is a cutaway perspective view of the rear end portions of the cylinder body and the rotor as viewed from the rear side, and FIG. FIG. 12 is an enlarged sectional view taken along line 12-12 of FIG. 1, and FIG. 13 is an enlarged sectional view taken along line 13-13 of FIG. 14 is a sectional view taken along line 14-14 of FIG. 13, FIG. 15 is a sectional view taken along line 15-15 of FIG. 14, FIG. 16 is an exploded perspective view of the interlock mechanism, FIG. 17 is a sectional view taken along line 17-17 of FIG. 18 is a sectional view taken along line 18-18 in FIG. 14, FIG. 19 is a sectional view taken along line 19-19 in FIG. 15, and FIG. 20 is a sectional view taken along line 20-20 in FIG.
[0011]
First, in FIGS. 1 to 3, the steering lock device can be rotated by a housing 21 attached to a steering column (not shown), a cylinder body 22 inserted and fixed in the housing 21, and an inserted key 23. A rotor 24 inserted into the cylinder body 22 and a joint 25 which is engaged with the rotor 24 so as not to be relatively rotatable and is coaxially disposed on the rear side of the rotor 24 and rotatably supported by the housing 21. The lock mechanism 26 can switch between a locked state that prevents the steering shaft 72 (see FIG. 12) from rotating and a unlocked state that enables the steering shaft 72 to rotate according to the rotation of the rotor 24 and the joint 25. In response to insertion of the key 23 into the rotor 24 and removal of the key 23 from the rotor 24, A key slider 27 which is slidable in a direction along one diameter line of the rotor 24 and is attached to the front end portion of the rotor 24, and an operation as an operation member provided between the key slider 27 and the lock mechanism 26. A lever 28, a key detection switch 29 for detecting the insertion of the key 23 into the rotor 24, an ignition switch 30 connected to the joint 25 and attached to the rear end of the housing 21, and a shift lever (not shown) in the automatic vehicle are provided. If not in the parking position, an interlock mechanism 31 attached to the housing 21 is provided so as to prevent the rotor 24 from rotating.
[0012]
The housing 21 is provided with a storage hole 34 whose front end is open, and an engagement flange 32 that engages with the front end of the housing 21 is provided integrally with the front end of the cylinder body 22. LOCK position, ACC position, ON position and START position are displayed on the front surface of the screen at intervals in the circumferential direction.
[0013]
Referring also to FIG. 4, the first half of the accommodation hole 34 provided in the housing 21, that is, the portion corresponding to the cylinder body 22, is arranged in the first and second directions extending parallel to each other along one diameter line of the rotor 24. The second inner wall surfaces 34a, 34b, the third inner wall surface 34c that connects the one ends of the first and second inner wall surfaces 34a, 34b at a substantially right angle, and the other ends of the first and second inner wall surfaces 34a, 34b are connected. It is formed so as to have a cross-sectional shape composed of a substantially semicircular fourth inner wall surface 34d.
[0014]
The third inner wall surface 34c is provided with an engagement groove 35 formed in an arc shape in a plane orthogonal to the rotational axis of the rotor 24, and the fourth inner wall surface 34d has a circumferential intermediate portion in the circumferential direction of the rotor 24. A longitudinal groove 36 extending along the rotation axis is provided.
[0015]
The outer surface of the cylinder body 22 is formed in a shape substantially corresponding to the inner surface of the front half of the housing hole 34, and the first and second outer wall surfaces 22a that are close to and face the first and second inner wall surfaces 34a, 34b. , 22b and the first and second outer wall surfaces 22a, 22b are connected to the third inner wall surface 34c in the vicinity of and opposed to the third inner wall surface 34c, and at a position having a relatively large space between the fourth inner wall surface 34d. A fourth outer wall surface 22d that faces the first and second outer wall surfaces 22a, 22b is provided. In addition, the fourth outer wall surface 22d is integrally provided with a protrusion 37 that can be fitted into the longitudinal groove 36 of the housing 21 and abut against the housing 21. That is, the cylinder body 22 is inserted into the front half of the storage hole 34 so that the rotor 24 cannot rotate about the rotation axis.
[0016]
On the outer periphery of the cylinder body 22, a storage groove 38 extending in a range substantially corresponding to the first to third inner wall surfaces 34 a to 34 c extends along a plane perpendicular to the rotation axis of the rotor 24 at a position corresponding to the engagement groove 35. Mounting recesses 39, 39 are provided on the outer periphery of the cylinder body 22 so as to be connected to both ends in the circumferential direction of the storage groove 38, respectively.
[0017]
On the outer periphery of the cylinder body 22, a resilient engagement member 40 that can be resiliently engaged in the engagement groove 35 is mounted. This elastic engagement member 40 is formed by bending a band-shaped metal plate whose width direction is along the rotation axis of the rotor 24, and is engaged and mounted in both mounting recesses 39 and 39, respectively. The engagement end portions 40a and 40b are formed in a substantially J shape as much as possible, and the connection portion 40c is formed in a mountain shape by connecting the engagement end portions 40a and 40b. Thus, the central tip portion of the connecting portion 40c is elastically engaged with the engaging groove 35, and at that time, both side edges in the width direction of the central tip portion of the connecting portion 40c are respectively on the corresponding inner side surfaces of the engaging groove 35. By facing each other, the cylinder body 22 inserted into the storage hole 34 is prevented from moving in the direction along the rotation axis of the rotor 24. That is, the cylinder body 22 is inserted and fixed in the housing 21.
[0018]
The elastic engagement member 40 is stored in the storage groove 38 while being in sliding contact with the inner surface of the storage hole 34 when the connecting portion 40c is pushed by the third inner wall surface 34c when the cylinder body 22 is inserted into the storage hole 34. In this way, it is arranged in the storage groove 38. Thus, at the front end portion of the third inner wall surface 34c, the connecting portion 40c that protrudes from the storage groove 38 is placed outwardly toward the front end side of the third inner wall surface 34c so that the connection groove 40c can be smoothly stored in the storage groove 38. An inclined guide groove 41 (see FIGS. 1 and 2) is provided.
[0019]
By the way, when the cylinder body 22 is inserted into the storage hole 34 until the storage groove 38 corresponds to the engagement groove 35, the elastic engagement member 40 protrudes outward from the storage groove 38 by its spring force. As a result, the connecting portion 40c engages with the engaging groove 35, and in the engaging groove 35 and the first and second inner wall surfaces 34a and 34b in a plane perpendicular to the rotation axis of the rotor 24. The elastic engagement member 40 is elastically contacted. That is, the central tip portion of the connecting portion 40c of the elastic engagement member 40 elastically contacts the closed end surface of the engaging groove 35 at the first contact point P1 , and the connecting portion 40c and both engaging end portions 40a, The connecting portion 40b elastically contacts the first and second inner wall surfaces 34a and 34b at the second and third contact points P2 and P3, respectively.
[0020]
The projecting portion 37 of the cylinder body 22 is elastically applied to the closed end of the vertical groove 36 by the elastic contact of the elastic engagement member 40 (that is, the central tip portion of the connecting portion 40c) to the housing 21 at the first contact point P1. The cylinder body 22 is prevented from rattling in the housing 21 in the direction along the diameter line of the rotor 24 passing through the first contact point P1, and the second and second By the resilient contact of the resilient engagement member 40 to the housing 21 at the three contact points P2, P3, rattling in the housing 21 of the cylinder body 22 in the direction orthogonal to the one diameter line is avoided. It will be.
[0021]
The rotor 24 has a key hole 44 whose front end is opened and is formed in a bar shape having a circular cross section, and is inserted into a cylinder hole 45 provided in the cylinder body 22 so as to be rotatable. In addition, grooves 46 extending along the axial direction of the cylinder hole 45 are provided at a plurality of positions spaced in the circumferential direction of the inner surface of the cylinder hole 45. The rotor 24 is mounted with a plurality of tumblers 47 that are elastically urged in a direction to engage with the grooves 46 at positions spaced apart in the axial direction of the cylinder holes 45. 47... Engage with the groove 46 when the key 23 is not inserted into the key hole 44 to prevent the rotor 24 from rotating, but the groove 46. The rotor 24 slides away to a position that allows the rotor 24 to rotate.
[0022]
Referring to FIGS. 5, 6, and 7 together, the front end portion of the rotor 24 crosses the key hole 44 in a direction along one diameter line of the rotor 24 and both ends are opened to the outer surface of the rotor 24. A caulking sliding hole 49 is provided. The key slider 27 is slidably fitted in the sliding hole 49, and can move in the direction along the diameter line of the rotor 24. The key slider 27 is attached to the front end portion of the rotor 24.
[0023]
The key slider 27 includes a rectangular through hole 51 corresponding to the key hole 44 of the rotor 24, and the key 23 inserted into the key hole 44 abuts on the diagonal position of the cross section of the through hole 51. Accordingly, inclined surfaces 52 and 52 for sliding the key slider 27 in the direction along the diameter line of the rotor 24, that is, in the sliding hole 49, are provided symmetrically with respect to the center of the through hole 51. Protrusions 53 and 53 projecting outward are provided symmetrically with respect to the center of the through hole 51 on the outer surface of the key slider 27 in the portion where the inclined surfaces 52 and 52 are provided.
[0024]
Such a key slider 27 can be used by being fitted into the sliding hole 49 from either side along the longitudinal direction, and one projection 53 is slid on one side surface of the sliding hole 49. A guide groove 54 for guiding movement is provided, and a guide groove 55 for slidably guiding the other protrusion 53 is provided on the other side surface of the slide hole 49.
[0025]
The front end of the operating lever 28 is in contact with one end of the key slider 27 fitted in the sliding hole 49, and a spring force that presses the key slider 27 acts on the operating lever 28. . Therefore, when the key 23 is removed from the key hole 44 and the rotor 24 is in the LOCK position, the key slider 27 is pushed to a position where the other end protrudes from the outer surface of the rotor 24 as shown in FIGS. As shown in FIGS. 1 and 2, the cylinder body 22 is provided with a hole 56 for accommodating the protruding portion of the key slider 27 from the outer surface of the rotor 24. When the key 23 is inserted into the key hole 44 and the key slider 27, as shown in FIGS. 1 and 5, both end surfaces of the key slider 27 are placed against the rotor 24 against the elastic force acting from the operating lever 28. The key slider 27 moves to a position that is flush with the outer surface of the rotor. When the rotor 24 rotates in this state, one end of the operating lever 28 comes into sliding contact with the outer surface of the rotor 24.
[0026]
Thus, among the guide grooves 54 and 55 provided on both side surfaces of the slide hole 49, the guide groove 55 is formed over the entire length of the slide hole 49, whereas the guide groove 54 is formed in the slide hole 49. Is formed on one side surface of the sliding hole 49 so as to have a length corresponding to the amount of movement of the key slider 27.
[0027]
By the way, the key slider 27 is a sintered alloy having a Rockwell hardness of 40 (HRC) or more in order to prevent unauthorized unlocking due to insertion of an unauthorized tool other than the key 23, such as a slide hammer, into the rotor 24. It is formed by.
[0028]
Such a sintered alloy having a Rockwell hardness of 40 (HRC) or higher is composed of, for example, 97.5% Fe, 2% Ni, and 0.5% C. Thus, in order to obtain the key slider 27 made of sintered alloy, the raw material powder made of Fe, Ni, C and the like and a binder such as wax are kneaded, and the compound obtained in the kneading step is granulated. A step of obtaining pellets, a step of molding the pellets by injection molding in a mold, a step of heating the shaped product to 300 ° C. to remove the binder, and heating at a temperature of 1200 ° C., for example, for 10 hours, for example Thus, the process of applying the sintering process may be sequentially performed.
[0029]
In FIGS. 1 and 2 again, the operating lever 28 is formed long along the rotational axis of the rotor 24 and is disposed on the side of the cylinder body 22. The longitudinal intermediate portion of the operating lever 28 is The support portion 57 provided in the housing 21 is rotated through a support shaft 58 orthogonal to a plane including the center line of the sliding hole 49 and the rotation axis line of the rotor 24 while the rotor 24 is in the LOCK position. The operating lever 28 is supported so that the front end of the operating lever 28 can be brought into contact with the key slider 27, and the cylinder body 22 is slidably fitted with a slit 59 (see FIG. 4). ) Is provided.
[0030]
Between the support shaft 58 and the key slider 27, between the housing 21 and the operation lever 28, a spring 60 is provided for rotating and urging the operation lever 28 in a direction in which a pressing force is applied to the key slider 27 from the operation lever 28. . The support shaft 58 is attached to the support portion 57 so as to allow a slight movement of the operation lever 28 in a direction in which the support shaft 58 approaches and separates from the cylinder body 22.
[0031]
8 to 11, the rear end portion of the rotor 24 is disposed relative to the front end portion of the joint 25 that is coaxially disposed on the rear side of the rotor 24 and is rotatably supported by the housing 21. A spring 62 that biases the rotor 24 forward is provided between the rotor 24 and the joint 25.
[0032]
A metal flat stopper tumbler 63 is mounted at the rear end of the rotor 24 at a portion protruding rearward from the cylinder body 22 so as to be slidable along a plane perpendicular to the rotational axis of the rotor 24. Is done. That is, slit-like holes 64 along the plane are provided at the rear end portion of the rotor 24 with both ends opened to the outer surface of the rotor 24, and the stopper tumbler 63 is slidably fitted into the holes 64. Is done. Moreover, a spring 65 is provided between the stopper tumbler 63 and the rotor 24 to urge the stopper tumbler 63 in a direction in which one end of the stopper tumbler 63 protrudes from the outer surface of the rotor 24. Thus, when the rotor 24 is inserted into the cylinder body 22, the stopper tumbler 63 is pressed by the inner surface of the cylinder hole 45 to be received in the hole 64 of the rotor 24 while contracting the spring 65. When the rotor 24 is inserted into the cylinder body 22 until it is located behind the rear end of the cylinder body 22, one end of the stopper tumbler 63 protrudes from the outer surface of the rotor 24 by the spring force of the spring 64. Become. In addition, the moving end of the stopper tumbler 63 in the protruding direction is regulated by a cylindrical regulating cylinder portion 66 provided at the rear end of the cylinder body 22. Thus, when one end of the stopper tumbler 63 is engaged with the rear end of the cylinder body 22, the rotor 24 is prevented from being removed from the cylinder body 22.
[0033]
On the other hand, first and second engagement surfaces 67 and 68 for selectively engaging the stopper tumbler 63 are provided at the rear end of the cylinder body 22 so as to surround the rear end portion of the rotor 24. As shown in FIGS. 8 and 10, the first engagement surface 67 engages the stopper tumbler 63 in a state where the rotor 24 is in a position other than the LOCK position, that is, in the ACC position, the ON position, and the START position. A circular arc is formed so as to face the rear side along a plane orthogonal to the rotational axis of the rotor 24. Further, as shown in FIG. 9, the second engagement surface 68 is for engaging the stopper tumbler 63 in a state where the rotor 24 is in the LOCK position, and on the rear side forming a step from the first engagement surface 67. It is formed so as to face the rear side along the plane.
[0034]
When the rotor 24 is rotated to the ACC position side from the state where the rotor 24 is in the LOCK position and the stopper tumbler 63 is engaged with the second engagement surface 68 as shown by the chain line in FIG. 24 is biased forward by the spring 62, so that the rotor 24 moves forward until the stopper tumbler 63 is engaged with the first engagement surface 67 as shown by the solid line in FIG. When rotating the rotor 24 from the ACC position to the LOCK position, the rotor 24 is moved to the spring 62 until the stopper tumbler 63 is engaged with the second engagement surface 68 located on the rear side of the first engagement surface 67. It is necessary to push in against the spring force.
[0035]
A guide member 71 that penetrates the joint 25 is press-fitted on the rear side of the housing 21, and the rear side of the joint 25 that is urged rearward by the spring force of a spring 62 provided between the rotor 24 and the guide member 71. Is restricted by a guide member 71 engaged with the joint 25.
[0036]
In FIG. 12, a locked state in which the steering shaft 72 is prevented from rotating by engaging with an engagement recess 73 provided on the outer periphery of the steering shaft 72, and the engagement with the engagement recess 73 is released to disengage the steering shaft. The lock mechanism 26 for switching to the unlocked state enabling the rotation of the 72 has a cam 74 provided in the joint 25 and a through hole 75 through which the cam 74 is slidably fitted to the guide member 71. Provided between the slider 76, the lock pin 77 coupled to the slider 76 so as to be engageable with the engaging recess 73 of the steering shaft 72, and the cap 78 and the slider 76 attached to the outer end of the guide member 71. And a spring 79 that urges the slider 76 in a direction in which the lock pin 77 is engaged with the engaging recess 73. Abutment surface 80 is formed to define the position of the Ida 76.
[0037]
In such a lock mechanism 26, when the rotor 24 is in a position other than the LOCK position, that is, in the ACC position, the ON position, and the START position, the lock pin 77 is disengaged from the engagement recess 73 to allow the steering shaft 72 to rotate. In contrast, when the rotor 24 is in the LOCK position, the slider 76 is moved by the spring force of the spring 79 so that the cam 74 engages the engagement recess 73 with the cam 74. It becomes a moving position. On the other hand, the movement of the key slider 27 according to the insertion of the key 23 into the key hole 44 of the rotor 24 causes the actuation lever 28 to rotate in a direction in which the rear end approaches the slider 76. The outer surface is engaged with the rear end of the operating lever 28 when the lock mechanism 26 is unlocked in response to the rotor 24 being in a position other than the LOCK position, so that the lock mechanism 26 remains unlocked. An engaging recess 81 is provided. That is, even if the rotor 24 is in the LOCK position, the lock mechanism 26 is locked unless the operating lever 28 is rotated in the direction in which the rear end thereof is detached from the engaging recess 81 by removing the key 23 from the key hole 44. There is nothing.
[0038]
In FIG. 13 to FIG. 16, the interlock mechanism 31 allows the housing 21 to rotate between a rotation prevention position that prevents the rotation of the rotor 24 and a rotation allowable position that permits the rotation of the rotor 24. A lever 82 to be supported, a plunger 83 whose one end is engaged with the lever 82, and the other end of the plunger 83 is inserted and attached to the housing 21. A solenoid 84 that exhibits an electromagnetic force that rotates to a blocking position, a return spring 85 that exerts a resilient force that urges the lever 82 toward the rotation allowable position, a part of the solenoid 84, a plunger 83, and a lever 82 and the return spring 85, the solenoid 84 and the cover 86 elastically engaged with the housing 21 are provided.
[0039]
The joint 25 that rotates integrally with the rotor 24 is integrally provided with a restricting protrusion 87 that protrudes outward. The lever 82 abuts one end of the lever 82 against the restricting protrusion 87, that is, the rotor 25. The one end is retracted sideways so as to avoid the contact between the rotation preventing position (the position indicated by the chain line in FIG. 13) and the restricting protrusion 87 to prevent the rotation of the joint 25, that is, the rotor 24. It is possible to rotate between a rotation allowable position that allows rotation (a position indicated by a dotted line in FIG. 13).
[0040]
A mounting portion 88 for mounting the interlock mechanism 31 is provided on a side portion of the housing 21, and a solenoid 84 formed in a rectangular box shape with a coil (not shown) is abutted on the mounting portion 88. A flat mounting surface 89 is formed.
[0041]
Further, the mounting portion 88 includes a regulating surface 90 that abuts against one side surface of the end portion of the solenoid 84 on the side opposite to the plunger 83 as shown in FIG. 14, and a solenoid 84 on the plunger 83 side as shown in FIG. A regulating surface 91 that abuts on the other side surface of the end portion is formed along a plane orthogonal to the mounting surface 89 and protrudes laterally from one side surface of the end portion of the solenoid 84 on the side opposite to the plunger 83. A restriction groove 93 into which the restriction flange 92 is fitted is formed in the restriction surface 90. Therefore, the solenoid 84 is positioned at a constant position in contact with the mounting surface 89.
[0042]
The cover 86 is formed of synthetic resin, and a substantially half portion of the solenoid 84 on the plunger 83 side is covered with the cover 86. In addition, an engagement protrusion 96 that elastically engages with a flange 95 that protrudes laterally from one side of the solenoid 84 that is regulated by the regulation surface 90, and, as clearly shown in FIG. An engagement claw portion 97 that is elastically engaged with the solenoid 84 on the other side of the regulated solenoid 84 is provided on the cover 86, and the cover 86 is elastically engaged with the solenoid 84.
[0043]
The plunger 83 is inserted into the solenoid 84 so as to be detachable, and one end of the plunger 83 is engaged with the other end of the lever 82 so as to be detachable. On the other hand, the return spring 85 is formed in a coil shape surrounding the plunger 83 and is provided between the other end of the lever 82 and the solenoid 84. One end of the return spring 85 is engaged with the other end of the lever 82. A mating engagement portion 85a is provided.
[0044]
Accordingly, the solenoid 84, the plunger 83 inserted into the solenoid 84, the lever 82 engaged with one end of the plunger 83, and the coiled return spring 85 surrounding the plunger 83 between the lever 82 and the solenoid 84 The solenoid assembly unit 98 can be configured by the cover 86 elastically engaged with the solenoid 84, and the solenoid assembly unit 98 is attached to the attachment portion 88 of the housing 21.
[0045]
In addition, the cover 86 that is elastically engaged with the solenoid 84 is provided with a separation preventing wall 86a that faces one end of the plunger 83 protruding from the solenoid 84 and prevents the plunger 83 from separating from the solenoid 84. Thus, it is avoided that the plunger 83 is detached from the solenoid 84 when the solenoid assembly unit 98 is assembled.
[0046]
When the solenoid assembly unit 98 is attached to the attachment portion 88, a restriction wall 99 that engages with the inner surface of the detachment prevention wall 86a of the cover 86 is provided on the attachment portion 88 of the housing 21. When the solenoid assembly unit 98 is mounted on the mounting portion 88, the movement end of the plunger 83 in the protruding direction from the solenoid 84, that is, the rotation end of the lever 82 toward the rotation allowable position side is restricted. Moreover, the engagement wall 100 is provided with an engagement slit 100, and the engagement protrusion 101 that protrudes from the inner surface of the separation preventing wall 86 a is engaged with the engagement slit 100.
[0047]
Further, the engagement hole 102 is provided in the cover 86 at a portion closer to the housing 21 than the separation preventing wall 86a, and the engagement hole 102 is elastically engaged with the engagement protrusion 103 protruding from the mounting portion 88. Is done.
[0048]
Referring to FIG. 19, an engagement hole 104 is provided on one side surface of cover 86 and has an approximately U-shaped cross-sectional shape, and engagement protrusion 105 protruding from mounting portion 88. The engagement hole 104 is elastically engaged. Further, as shown in FIG. 20, an engaging claw portion 107 that is elastically engaged with an engaging concave portion 106 provided in the mounting portion 88 is integrally provided on the other side surface of the cover 86.
[0049]
In this way, the cover 86 is elastically engaged with the mounting portion 88 of the housing 21, and the solenoid 84 is sandwiched between the cover 86 and the mounting surface 89. That is, the solenoid assembly unit 98 is securely fixed to the mounting portion 88 of the housing 21 through the cover 86.
[0050]
Incidentally, the other end side of the lever 82 is slidably inserted into a groove 110 provided in the mounting portion 88 of the housing 21, and a support hole 108 is provided in an intermediate portion of the lever 82. On the other hand, a single screw member 109 penetrating the engaging protrusion 105 is screwed into the mounting portion 88, and the screw member 109 is fitted into the support hole 108 to rotate the lever 82. A shaft portion 109a that is supported is provided.
[0051]
Next, the operation of this embodiment will be described. The key slider 27 attached to the front end portion of the rotor 24 is formed of a sintered alloy having a Rockwell hardness of 40 (HRC) or higher. Therefore, in order to perform the original function of the key slider 27 that slides in the direction along the one diameter line of the rotor 24 and rotates the operating lever 28 in accordance with the insertion / removal of the key 23 into / from the key hole 44, By making the complicated shape required for the key slider 27 easily made of a sintered alloy, the key slider 27 is made to have a high hardness of Rockwell hardness 40 (HRC) or higher. A function as a conventional protector can be provided in the key slider. That is, it is possible to prevent the unauthorized tool other than the key 23 such as a slide hammer from being inserted into the rotor 24 by the key slider 27, and it is possible to reduce the number of parts by eliminating the protector which has been conventionally required. In addition, it becomes possible to reduce the number of assembling work steps by eliminating the need for the work of assembling the protector.
[0052]
Further, when inserting and fixing the cylinder body 22 into the housing 21, the cylinder body 22 is inserted into the storage hole 34 of the housing 21 in a state where the elastic engagement member 40 is disposed in the storage groove 38 and attached to the cylinder body 22. What is necessary is just to insert it, and when the cylinder body 22 is inserted to the position which the elastic engagement member 40 respond | corresponds to the engagement groove 35 provided in the accommodation hole 34, the elastic engagement member 40 will be. The cylinder body 22 is prevented from moving along the rotational axis of the rotor 24 by protruding from the storage groove 38 and elastically engaging with the engagement groove 35. That is, only the elastic engagement member 40 is necessary for insertion and fixation of the cylinder body 22 into the housing 21, and the number of parts can be reduced, and only the elastic engagement member 40 is attached to the cylinder body 22. Therefore, the assembly work man-hour is also reduced.
[0053]
Moreover, in the storage hole 34, the portion into which the cylinder body 22 is inserted is formed to have a cross-sectional shape composed of the first to fourth inner wall surfaces 34a to 34d. The engagement groove 35 and the first and second inner wall surfaces 34a and 34b are elastically brought into contact with each other in a plane perpendicular to the axis of the rotor 24. Thereby, the protrusion 37 of the cylinder body 22 is elastically applied to the closed end of the vertical groove 36 provided on the fourth inner wall surface 34d as the elastic engagement member 40 comes into contact with the engagement groove 35. The cylinder body 22 is prevented from rattling between the third and fourth inner wall surfaces 34a and 34d, and the elastic engagement member 40 is elastically contacted with the first and second inner wall surfaces 34a and 34b. As a result, rattling of the cylinder body between the first and second inner wall surfaces 34a, 34b is prevented. Therefore, rattling of the cylinder body 22 in the storage hole 34 is effectively prevented.
[0054]
Further, the elastic engagement member 40 is formed by bending a band-shaped metal plate whose width direction is the direction along the rotational axis of the rotor 24, and the elastic engagement member 40 is elastic in the direction along the rotational axis of the rotor 24. The strength of the engaging member 40, that is, the strength with which the cylinder body 22 is removed from the housing 21 can be increased.
[0055]
When the shift lever is not in the parking position when the rotor 24 is in the ACC position, the interlock mechanism 26 excites the solenoid 84 and engages the lever 82 with the restricting protrusion 87 of the joint 25 to thereby activate the ACC of the rotor 24. The interlock mechanism 26 includes a solenoid 84, a plunger 83, a return spring 85, and a cover 86. The interlock mechanism 26 is for preventing the rotation from the position to the LOCK position and is necessary for an automatic vehicle. A solenoid assembly unit 98 is mounted on the mounting portion 88 of the housing 21.
[0056]
In this solenoid assembly unit 98, the cover 86 is elastically engaged with the solenoid 84, a return spring 85 is provided between the solenoid 84 and the lever 82 so as to surround the plunger 83, and an engagement portion 85a provided in the return spring 85 is provided. Engagement with the lever 82 and separation of the plunger 83 from the solenoid 84 are prevented by a separation preventing wall 86 a provided on the cover 86 so as to face one end of the plunger 83. Therefore, when the solenoid assembly unit 98 is assembled, the solenoid 84, the plunger 83, the return spring 85, and the cover 86 can maintain the mutual connection state, and the solenoid assembly unit 98 is assembled and prepared in advance. Can do.
[0057]
Therefore, when assembling a steering lock device for an automatic vehicle, the solenoid assembly unit 98 is assembled to the housing 21, and when assembling a steering lock device that does not require the interlock mechanism 26, the solenoid assembly unit 98 is assembled to the housing 21. It is only necessary not to assemble, and it is not necessary to prepare the housing 21 separately for an automatic vehicle and a manual vehicle, which is convenient.
[0058]
The housing 21 is provided with a mounting surface 89 for positioning and abutting the solenoid 84, and a cover 86 sandwiching the solenoid 84 between the mounting surface 89 is elastically engaged with the mounting portion 88 of the housing 21 and mounted. Since a single screw member 109 screwed to the portion 88 is provided with a shaft portion 109a for rotatably supporting the lever 82, parts necessary for assembling the solenoid assembly unit 98 to the housing 21 are provided. Only the single screw member 109 can reduce the number of parts.
[0059]
Incidentally, when the rotor 24 is rotated from the ACC position to the LOCK position, a pushing operation to the rear side of the rotor 24 is required. In order to require such a pushing operation, the cylinder body 22 is required. At the rear end, a first engagement surface 67 facing the rear side along a plane orthogonal to the rotation axis of the rotor 24, and along the plane on the rear side forming a step from the first engagement surface 67. A second engagement surface 68 facing the rear side is provided, and a flat stopper tumbler 63 is attached to the rotor 24 so as to be slidable in the direction along the plane.
[0060]
In addition, the stopper tumbler 63 allows the stopper tumbler 63 to be accommodated in the rotor 24 by the inner surface of the cylinder body 22 when the rotor 24 is inserted into the cylinder body 22, and the first and second engagement surfaces 67, 68, the second engagement surface 68 is at a position where the stopper tumbler 63 is engaged when the rotor 24 is in the LOCK position. The first engagement surface 67 is arranged at a position where the stopper tumbler 63 is engaged when the rotor 24 is located at a position other than the LOCK position.
Therefore, when rotating the rotor 24 from the ACC position to the LOCK position, the rotor 24 is pushed from the position where the stopper tumbler 63 is engaged with the first engagement surface 67 to the position where the stopper tumbler 63 is engaged with the second engagement surface 68. Operation is required.
[0061]
Since the stopper tumbler 63 is a flat plate and can be press-molded, the manufacturing cost can be reduced.
[0062]
Since the first and second engagement surfaces 67 and 68 are formed along a plane perpendicular to the rotation axis of the rotor 24, the first engagement surface 67 and the second engagement surface 68 are formed on the rotor 24 when the rotor 24 is rotated from the LOCK position to the ACC position. The acting resistance force is relatively small. Therefore, it is possible to reduce the force required to rotate the rotor 24 from the LOCK position to the ACC position side, thereby improving operability.
[0063]
Moreover, the stopper tumbler 63, which is a component having a structure forcing the pushing operation when the rotor 24 is rotated from the ACC position to the LOCK position, also exhibits a function of preventing the rotor 24 from being removed from the cylinder body 22. It is possible to reduce the number of parts.
[0064]
Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. Is possible.
[0065]
【The invention's effect】
As described above, according to the first aspect of the present invention, the elastic member is inserted into the housing hole of the housing in a state where the elastic engagement member is disposed in the storage groove and is attached to the cylinder body. When the cylinder body is inserted to a position where the engaging member corresponds to the engaging groove, the central tip of the connecting portion formed in a mountain shape of the elastic engaging member protrudes from the storage groove and is elastically inserted into the engaging groove. Since the cylinder body is prevented from moving along the rotational axis of the rotor, the parts required for insertion and fixation of the cylinder body into the housing are limited to the elastic engagement member. It is possible to reduce the number of assembly work steps. Further, the elastic engagement member is formed by bending a band-shaped metal plate whose width direction is along the rotation axis of the rotor, and both sides in the width direction of the central tip portion of the connecting portion of the elastic engagement member. The edges are opposite to the corresponding inner side surfaces of the engaging groove so as to prevent axial movement in the cylinder body storage hole, and thereby the elastic force in the direction along the rotational axis of the rotor The strength of the engaging member can be made relatively high, and the removal strength of the cylinder body from the housing can be increased. Further, the connecting portion of the elastic engagement member is formed in a mountain shape, and the top surface of the central tip portion elastically contacts the engagement groove, so that the direction along one diameter line of the rotor passing through the contact point Thus, rattling in the cylinder body housing is avoided.
[0066]
According to the second aspect of the present invention, the resilient engagement member is inserted into the housing hole of the housing in a state where the resilient engagement member is disposed in the housing groove and is attached to the cylinder body. When the cylinder body is inserted to a position corresponding to the engagement groove, the elastic engagement member protrudes from the storage groove and elastically engages with the engagement groove, and thus follows the rotational axis of the rotor. Since the cylinder body is prevented from moving, the number of parts required for inserting and fixing the cylinder body into the housing can be reduced by using only the elastic engagement member, and the number of assembly work steps can be reduced. it can. Further, the elastic engagement member is formed by bending a band-shaped metal plate whose width direction is the direction along the rotation axis of the rotor, and both side edges in the width direction of the elastic engagement member are stored in the storage holes of the cylinder body. In order to prevent axial movement of the inner surface of the engaging groove, the inner surfaces of the engaging grooves are opposed to each other, whereby the strength of the elastic engaging member in the direction along the rotational axis of the rotor is relatively reduced. It is possible to increase the strength of the cylinder body from the housing. Further, it is possible to effectively prevent the cylinder body from rattling in the housing hole so that the elastic engagement member contacts the housing at three points.
[Brief description of the drawings]
FIG. 1 is a vertical side view of a steering lock device in a state where a rotor is at an ACC position.
FIG. 2 is a longitudinal side view corresponding to FIG. 1 in a state where the rotor is in a LOCK position.
FIG. 3 is a view taken in the direction of arrow 3 in FIG. 2;
4 is an enlarged sectional view taken along line 4-4 of FIG.
FIG. 5 is an enlarged cross-sectional view of the rotor and key slider taken along line 5-5 in FIG.
6 is an enlarged cross-sectional view of a rotor and a key slider taken along line 6-6 in FIG.
FIG. 7 is a perspective view of a key slider.
8 is an enlarged sectional view taken along line 8-8 in FIG. 1;
9 is an enlarged cross-sectional view taken along line 9-9 of FIG.
FIG. 10 is a cutaway perspective view of a rear end portion of a cylinder body and a rotor as viewed from the rear side.
FIG. 11 is a circumferential development of the outer surface of the rear end portion of the cylinder body and the rotor.
12 is an enlarged sectional view taken along line 12-12 of FIG.
13 is an enlarged cross-sectional view taken along line 13-13 of FIG.
14 is a cross-sectional view taken along line 14-14 of FIG.
15 is a cross-sectional view taken along line 15-15 of FIG.
FIG. 16 is an exploded perspective view of an interlock mechanism.
17 is a cross-sectional view taken along line 17-17 in FIG.
18 is a cross-sectional view taken along line 18-18 of FIG.
19 is a cross-sectional view taken along line 19-19 in FIG.
20 is a cross-sectional view taken along line 20-20 in FIG.
[Explanation of symbols]
21 ... Housing 22 ... Cylinder body 23 ... Key 24 ... Rotor 34 ... Storage hole 34a ... First inner wall surface 34b ... Second inner wall surface 34c ... Third inside Wall surface 34d ... fourth inner wall surface 35 ... engagement groove 38 ... storage groove 40 ... elastic engagement member

Claims (2)

The fixed housing (21) is provided with a storage hole (34) whose front end is opened, and can be rotated by a key (23) in a cylinder body (22) inserted and fixed in the storage hole (34). In the steering lock device into which the rotor (24) is inserted,
The cylinder body (22) is inserted into the storage hole (34) so as to be unable to rotate relative to the rotation axis of the rotor (24), and the rotor (24) is disposed on the outer periphery of the cylinder body (22). ) Is provided with a storage groove (38) along a plane orthogonal to the rotation axis of
Between a pair of engagement end portions (40a, 40b) to be engaged and mounted on the outer periphery of the cylinder body (22) at intervals in the circumferential direction, and between the engagement end portions (40a, 40b). A resilient engagement member (40) having a connecting portion (40c) formed in a mountain shape by bending a belt-shaped metal plate with a direction along the rotation axis of the rotor (24) as a width direction. Configured,
The elastic engagement member (40) is pushed by the inner surface of the storage hole (34) and stored in the storage groove (38) when the cylinder body (22) is inserted into the storage hole (34). And is arranged in the storage groove (38), and the inner end of the storage hole (34) is engaged with the central tip of the connecting portion (40c) protruding from the storage groove (38). A groove (35) is provided,
In the elastic engagement member (40), both side edges in the width direction of the central tip portion of the connecting portion (40c) thereof move in the axial direction within the storage hole (34) of the cylinder body (22). Both the corresponding inner side surfaces of the engaging groove (35) are opposed to each other so as to block, and the top surface of the central tip portion is elastically contacted with the engaging groove (35), A backlash of the cylinder body (22) in the housing (21) in a direction along one diameter line of the rotor (24) passing through the contact point (P1) is avoided. Steering lock device. The fixed housing (21) is provided with a storage hole (34) whose front end is opened, and can be rotated by a key (23) in a cylinder body (22) inserted and fixed in the storage hole (34). In the steering lock device into which the rotor (24) is inserted,
The cylinder body (22) is inserted into the storage hole (34) so as to be unable to rotate relative to the rotation axis of the rotor (24), and the rotor (24) is disposed on the outer periphery of the cylinder body (22). ) Is provided with a storage groove (38) along a plane orthogonal to the rotation axis of
The resilient engagement member (40) mounted on the outer periphery of the cylinder body (22) is pushed by the inner surface of the storage hole (34) when inserted into the storage hole (34) of the cylinder body (22). A resilient engagement member projecting from the storage groove (38) is disposed in the storage groove (38) so as to be stored in the storage groove (38), and is disposed on the inner surface of the storage hole (34). An engagement groove (35) for engaging (40) is provided,
The elastic engagement member (40) is formed by bending a band-shaped metal plate whose width direction is the direction along the rotational axis of the rotor (24), and the width of the elastic engagement member (40). Both side edges in the direction are opposed to the corresponding inner side surfaces of the engagement groove (35) so as to prevent axial movement in the storage hole (34) of the cylinder body (22),
First and second inner wall surfaces (34a, 34b) in which the accommodation hole (34) of the portion into which the cylinder body (22) is inserted extend parallel to each other along one diameter line of the rotor (24); The first and second inner wall surfaces (34a, 34b) are connected to one end of the third inner wall surface (34c) provided with the engaging groove (35) and the first and second inner wall surfaces (34a, 34b). It is formed so as to have a cross-sectional shape including a fourth inner wall surface (34d) that connects the other ends and can contact the cylinder body (22), and is engaged with the engagement groove (35). The elastic engagement member (40) is elastically applied to the engagement groove (35) and the first and second inner wall surfaces (34a, 34b) in a plane orthogonal to the axis of the rotor (24). characterized in that it is brought into contact with the steering lock instrumentation .

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