JPH10266656A - Steering lock device having illegal unlocking preventive function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a cost by forming a key slider to slidingly move in the diametrical direction of a rotor by insertion/extraction of a key to the rotor, out of sintered alloy having specific hardness. SOLUTION: A cylinder body 22 is inserted into a housing 21 installed on a steering column, and a rotor 24 rotatably operable by a key is inserted into a cylinder 22. Next, a key slider 27 made of sintered alloy having Rockwell hardness not less than 40 HRC is installed in a front end part of the rotor 24. The key slider 27 rotates an actuating lever 28 by slidingly moving in the one diametrical direction of the rotor 24 according to insertion/extraction of the key to a key hole. A complicated shape necessary to exhibit this function is easily formed since the key slider 27 is made of sintered alloy. Since the key slider 27 is formed in prescribed high hardness, a conventional protector function is imparted to the key slider 27, and insertion of an illegal tool into the rotor 24 can be prevented. Therefore, the number of part items and assembling manhours can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating member for maintaining an unlocked state of a lock mechanism by moving a key slider by inserting a key into a rotor in a cylinder body. The operating member is operated to allow the lock mechanism to be locked by the movement of the key slider by pulling out, and it is impossible to insert an unauthorized tool other than a key into the front end of the rotor. The present invention relates to a steering lock device with a function for preventing unauthorized unlocking.

[0002]

2. Description of the Related Art Conventionally, such an apparatus is disclosed in
It is already known from JP-A-42215.

[0003]

However, in the above-mentioned conventional apparatus, in order to prevent unauthorized unlocking due to insertion of an unauthorized tool other than a key, for example, a slide hammer into the rotor, the rotor is located forward of the key slider. At the front end of
A protector made of a material having high hardness is fixed by caulking or the like. For this reason, a protector other than the key slider is required, so that the number of parts is relatively large, and furthermore, the work of fixing the protector to the rotor is also required, resulting in an increase in the number of assembling work steps.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a steering lock device with an unauthorized unlocking prevention function that enables a reduction in the number of parts and a reduction in the number of assembly steps. With the goal.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a fixed cylinder, a rotor inserted into the cylinder so as to be rotatable by an inserted key, and a steering shaft. A lock mechanism capable of switching between a locked state for preventing rotation of the rotor and an unlocked state for enabling rotation of the steering shaft in accordance with the rotation of the rotor, insertion of a key into the rotor, and keying from the rotor A key slider mounted on the front end of the rotor so that it can slide in a direction along one diameter line of the rotor in accordance with the extraction of the rotor, and the lock mechanism is in an unlocked state when a key is inserted into the rotor. The key slider and the key slider are held so as to allow the lock mechanism to operate in the locked state when the key is removed from the rotor. An operating member provided between the lock mechanisms, the steering lock device having an unauthorized unlocking prevention function that prevents an unauthorized tool other than a key from being inserted into a front end of the rotor. It is characterized by being formed of a sintered alloy having a hardness of 40 (HRC) or more.

According to such a configuration, the shape required for the key slider in order to exhibit the original function of the key slider can be easily formed by using a sintered alloy, and then the key slider can be formed easily. Key slider is Rockwell hardness 40
By making the hardness higher than (HRC), the function as a conventional protector can be provided to the key slider, so that the protector which was conventionally required becomes unnecessary and the number of parts can be reduced, and the protector is assembled. Eliminating the work makes it possible to reduce the number of assembling work steps.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.

FIGS. 1 to 20 show an embodiment of the present invention. FIG. 1 is a longitudinal sectional side view of a steering lock device in a state where a rotor is at an ACC position. FIG. FIG. 3 is a sectional view taken along line 3-4 of FIG. 2, FIG. 4 is an enlarged sectional view taken along line 4-4 of FIG. 1, and FIG. 5 is a line 5-5 of FIG. FIG. 6 is an enlarged sectional view of the rotor and the key slider along line 6-6 in FIG. 2, FIG. 7 is a perspective view of the key slider, and FIG. 8 is a line 8-8 in FIG. Enlarged sectional view, FIG.
FIG. 10 is an enlarged sectional view taken along line 9-9 of FIG. 2, FIG. 10 is a cutaway perspective view of the rear end of the cylinder body and the rotor viewed from the rear side, and FIG.
1 is a circumferential development view of the outer surface of the rear end portion of the cylinder body and the rotor, FIG. 12 is an enlarged sectional view taken along line 12-12 of FIG. 1, FIG. 13 is an enlarged sectional view taken along line 13-13 of FIG. 1, and FIG. Of 14
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.
14 is a sectional view taken along line 17-17 in FIG. 14, and 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.

Referring first to FIGS. 1 to 3, the steering lock device includes a housing 21 mounted on a steering column (not shown), a cylinder body 22 inserted and fixed in the housing 21, and a key 2 inserted therein.
3 and a rotor 24 inserted into the cylinder body 22 so as to be rotatable and engaged with the rotor 24 so as to be relatively non-rotatable and arranged coaxially behind the rotor 24 to be rotatable with respect to the housing 21. Joint 25 supported by
A lock mechanism capable of switching between a locked state in which rotation of the steering shaft 72 (see FIG. 12) is prevented and an unlocked state in which rotation of the steering shaft 72 is enabled in accordance with the rotation of the rotor 24 and the joint 25. 26, insertion of the key 23 into the rotor 24, and
A key slider 27 mounted on the front end of the rotor 24 so as to be slidable in a direction along one diameter line of the rotor 24 in accordance with the extraction of the key 23 from the key slider 23, and between the key slider 27 and the lock mechanism 26. An operation lever 28 serving as an operation member provided on the motor, a key detection switch 29 for detecting 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, The automatic vehicle includes an interlock mechanism 31 attached to the housing 21 so as to prevent rotation of the rotor 24 when a shift lever (not shown) is not at the parking position.

The housing 21 is provided with a storage hole 34 whose front end is open. An engaging flange 32 for engaging with the front end of the housing 21 is provided integrally with the front end of the cylinder body 22. The LOCK position, A
The CC position, the ON position, and the START position are displayed at intervals in the circumferential direction.

Referring also to FIG. 4, the first half of the storage hole 34 provided in the housing 21, that is, a portion corresponding to the cylinder body 22, extends parallel to one another along one diameter line of the rotor 24. First and second inner wall surfaces 34a, 34
b, a third inner wall surface 34c for connecting one end of the first and second inner wall surfaces 34a, 34b at a substantially right angle, and a substantially semicircular shape connecting between the other ends of the first and second inner wall surfaces 34a, 34b. 4th
The inner wall surface 34d is formed to have a cross-sectional shape.

An engagement groove 35 formed in an arc shape in a plane orthogonal to the rotation axis of the rotor 24 is formed in the third inner wall surface 34c.
A longitudinal groove 36 extending along the rotation axis of the rotor 24 is provided at a circumferentially intermediate portion of the fourth inner wall surface 34d.

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 storage hole 34.
The first and second outer wall surfaces 22a and 22b approaching and facing the first and second inner wall surfaces 34a and 34b and the third inner wall surface 34c connecting and connecting the first and second outer wall surfaces 22a and 22b. The third outer wall surface 22c and the fourth inner wall surface 34d
And a fourth outer wall surface 22d facing between the first and second outer wall surfaces 22a and 22b at a relatively large distance. Moreover, the housing 2 is provided on the fourth outer wall surface 22d.
A protrusion 37 that fits into one vertical groove 36 and can come into contact with the housing 21 is integrally provided. That is, the cylinder body 22
Is inserted into the front half of the storage hole 34 with the rotation of the rotor 24 around the rotation axis being disabled.

On the outer periphery of the cylinder body 22, a storage groove 38 covering a range substantially corresponding to the first to third inner wall surfaces 34a to 34c is provided at a position corresponding to the engagement groove 35.
Provided along a plane orthogonal to the rotation axis of
Mounting recesses 39 are provided on the outer periphery of the cylinder body 22 so as to be continuous with both ends in the circumferential direction of the storage groove 38.

On the outer periphery of the cylinder body 22, a resilient engaging member 40 capable of resiliently engaging with the engaging groove 35 is mounted. The resilient engaging member 40 is formed by bending a band-shaped metal plate whose width is the direction along the rotation axis of the rotor 24. Engaging ends 40a, 40b formed in a substantially J-shape as much as possible
And a connecting portion 40c formed between the two engaging ends 40a and 40c to form a mountain shape. Thus, the connecting portion 40c is resiliently engaged with the engaging groove 35, thereby preventing the cylinder body 22 inserted into the storage hole 34 from moving in the direction along the rotation axis of the rotor 24. That is, the cylinder body 2
2 is inserted and fixed in the housing 21.

The resilient engaging member 40 is connected to the cylinder 22
The third inner wall surface 34c at the time of insertion into the storage hole 34
When 0 c is pushed, the inner surface of the storage hole 34 is slidably in contact with the storage groove 38 while being arranged in the storage groove 38. At the front end of the third inner wall surface 34c, the connecting portion 40c protruding from the storage groove 38 is outwardly moved toward the front end side of the third inner wall surface 34c so as to be smoothly housed in the storage groove 38. Guide groove 41 (FIG. 1)
And FIG. 2).

By the way, when the cylinder body 22 is inserted into the storage hole 34 to a position where the storage groove 38 corresponds to the engagement groove 35, the resilient engagement member 40 is moved out of the storage groove 38 by its spring force. The coupling portion 40c engages with the engagement groove 35, and the engagement groove 35, and the first and second inner wall surfaces 34a in a plane orthogonal to the rotation axis of the rotor 24. , 34b resiliently contact the resilient engagement member 40. That is, the distal end of the connecting portion 40c of the resilient engaging member 40 resiliently contacts the closed end face of the engaging groove 35 at the first contact point P1, and the connecting portion 40c.
c and the connecting portion of the two engaging ends 40a, 40b are connected to the first and second inner wall surfaces 34 at the second and third contact points P2, P3.
a and 34b are resiliently contacted with each other.

By the resilient contact of the resilient engagement member 40 with the housing 21 at the first contact point P1, the projection 37 of the cylinder body 22 is resiliently pressed against the closed end of the vertical groove 36, The rattling of the cylinder body 22 in the housing 21 in the direction along one diameter line of the rotor 24 passing through the first contact point P1 is avoided, and the second and third contact points P2, P3 Due to the resilient engagement of the resilient engaging member 40 with the housing 21, the rattling of the cylinder body 22 in the housing 21 in a direction orthogonal to the one diameter line is avoided.

The rotor 24 has a key hole 44 having an open front end.
And is formed in a rod shape having a circular cross section, and is rotatably inserted into a cylinder hole 45 provided in the cylinder body 22. Moreover, grooves 46 extending along the axial direction of the cylinder hole 45 are provided at a plurality of locations on the inner surface of the cylinder hole 45 spaced apart in the circumferential direction. The cylinder hole 4
A plurality of tumblers 47, which are resiliently urged in a direction engaging with the grooves 46, are mounted on the rotor 24 at positions spaced apart in the axial direction of 5, and the tumblers 47,.
When the key 23 is not inserted into the key hole 44, the engagement with the groove 46 prevents the rotation of the rotor 24, but the key 23 is separated from the groove 46 in accordance with the insertion of the key 23 into the key hole 44. To the position where the rotation of the rotor 24 is allowed.

Referring to FIG. 5, FIG. 6 and FIG.
The front end of the rotor 24 traverses the key hole 44 in a direction along one diameter line of the rotor 24,
4 is provided with a sliding hole 49 opened on the outer surface. The key slider 27 is slidably fitted in the sliding hole 49, and can be moved in a direction along one diameter line of the rotor 24 so that the key slider 27 is mounted on the front end of the rotor 24.

The key slider 27 has a rectangular through hole 51 corresponding to the key hole 44 of the rotor 24.
The key slider 27 is slid in a direction along one diameter line of the rotor 24, that is, in the sliding hole 49, at a diagonal position in the cross section of the through hole 51 in accordance with the abutment of the key 23 inserted into the key hole 44. The inclined surfaces 52, 52 for movement are provided symmetrically with respect to the center of the through hole 51, and the projections projecting outward on the outer surface of the key slider 27 at the portions where the inclined surfaces 52, 52 are provided. 53, 53 are provided symmetrically with respect to the center of the through hole 51.

Such a key slider 27 can be used by being fitted into the sliding hole 49 from any side along the longitudinal direction thereof. A guide groove 54 for slidably guiding the 53 and a guide groove 55 for slidably guiding the other projection 53 on the other side surface of the slide hole 49 are provided.

A front end of an operating lever 28 is in contact with one end of the key slider 27 fitted in the sliding hole 49, and a spring force for pressing the key slider 27 acts on the operating lever 28. doing. Therefore, when the key 23 is removed from the key hole 44 and the rotor 24 is at the LOCK position, as shown in FIGS.
Is pushed to a position where the other end protrudes from the outer surface of the rotor 24, and a hole 56 for accommodating a protruding portion of the key slider 27 from the outer surface of the rotor 24 is provided as shown in FIGS. It is provided on the cylinder body 22. When the key 23 is inserted into the key hole 44 and the key slider 27, as shown in FIGS. 1 and 5, both ends of the key slider 27 are opposed to the rotor 24 against the elastic force applied from the operating lever 28. The key slider 27 moves to a position where the key slider 27 is flush with the outer surface of the motor.
In sliding contact with the outer surface of the

The guide groove 55 is formed over the entire length of the slide hole 49 among the guide grooves 54 and 55 provided on both side surfaces of the slide hole 49. It 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 in the hole 49.

By the way, the key slider 27 is
Incorrect tools other than those such as a slide hammer
In order to prevent unauthorized unlocking due to being inserted into 4,
It is formed of a sintered alloy having a Rockwell hardness of 40 (HRC) or more.

Such a Rockwell hardness of 40 (HR)
C) The sintered alloy described above is, for example, 97.5% F
e, consisting of 2% Ni and 0.5% C. In order to obtain the key slider 27 made of a sintered alloy, a step of kneading the raw material powder composed of Fe, Ni, C, etc. and a binder such as wax, and a step of granulating the compound obtained in the kneading step are performed. A step of obtaining pellets, a step of molding the pellets by injection molding in a mold, a step of heating the formed product to, for example, 300 ° C. to remove a binder, and heating at a temperature of, for example, 1200 ° C. for, for example, 10 hours. Thus, the sintering process may be sequentially performed.

Referring again to FIGS. 1 and 2, the operating lever 28 is formed to be long along the rotation axis of the rotor 24 and is disposed on the side of the cylinder body 22. The portion is connected to a support portion 57 provided on the housing 21 via a support shaft 58 orthogonal to a plane including the center line of the slide hole 49 and the rotation axis of the rotor 24 when the rotor 24 is at the LOCK position. The operating lever 28 is rotatably supported by the key slider 2.
7 and a slit 59 for slidably engaging the front end side of the operating lever 28 with the cylinder body 22.
(See FIG. 4).

Between the support shaft 58 and the key slider 27, between the housing 21 and the operating lever 28, a spring 60 for urging the operating lever 28 in a direction to apply a pressing force to the key slider 27 from the operating lever 28 is provided. Is provided. Further, 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 of moving toward and away from the cylinder body 22.

8 to 11, the rear end of the rotor 24 is provided at the front end of a joint 25 which is coaxially disposed on the rear side of the rotor 24 and is rotatably supported by the housing 21. A spring 62 for urging the rotor 24 forward is provided between the rotor 24 and the joint 25.

At the rear end of the rotor 24, which protrudes rearward from the cylinder body 22, a stopper tumbler made of a metal flat plate is provided so as to be slidable along a plane perpendicular to the rotation axis of the rotor 24. 63 is mounted. That is, the rear end of the rotor 24 has a slit-shaped hole 6 along the plane.
The stopper tumbler 63 is slidably fitted in the hole 64. Moreover, the stopper tumbler 63 and the rotor 2
4, one end of the stopper tumbler 63 is connected to the rotor 24.
A spring 65 is provided for urging the stopper tumbler 63 in a direction in which the stopper tumbler 63 protrudes from the outer surface. When the rotor 24 is inserted into the cylinder body 22, the stopper tumbler 63 is housed in the hole 64 of the rotor 24 while being pressed by the inner surface of the cylinder hole 45 while contracting the spring 65.
When the rotor 24 is inserted into the cylinder body 22 until the rear end of the cylinder body 22 is located behind the rear end of the cylinder body 22,
One end of the stopper tumbler 63 projects from the outer surface of the rotor 24 by the spring force of the spring 64. Moreover, the moving end of the stopper tumbler 63 in the protruding direction is regulated by a cylindrical regulating cylinder 66 provided at the rear end of the cylinder body 22. Thus, one end of the stopper tumbler 63 is engaged with the rear end of the cylinder body 22, so that the rotor 24 is prevented from coming off from the cylinder body 22.

On the other hand, at the rear end of the cylinder body 22, first and second engagement surfaces 67 and 68 for selectively engaging the stopper tumbler 63 surround the rear end of the rotor 24. Provided. As shown in FIGS. 8 and 10, the first engagement surface 67 engages the stopper tumbler 63 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. Are formed in an arc shape so as to face the rear side along a plane perpendicular to the rotation axis of the rotor 24. Further, as shown in FIG. 9, the second engagement surface 68
The stopper tumbler 63 is engaged in the position, and is formed so as to face the rear side along the plane on the rear side forming a step from the first engagement surface 67.

When the rotor 24 is at the LOCK position and the stopper tumbler 63 is engaged with the second engagement surface 68 as shown by a chain line in FIG. 11, the rotor 24 is rotated to the ACC position. Occasionally, since the rotor 24 is biased forward by the spring 62, the rotor 24 moves forward until the stopper tumbler 63 engages with the first engagement surface 67 as shown by the solid line in FIG. For A
When the rotor 24 is rotated from the CC position to the LOCK position, the rotor 24 is not moved until the stopper tumbler 63 is engaged with the second engagement surface 68 located behind the first engagement surface 67. It is necessary to perform a pushing operation against the force.

A guide member 71 for allowing the joint 25 to pass therethrough is press-fitted on the rear side of the housing 21 and is urged rearward by a spring force of a spring 62 provided between the housing 21 and the rotor 25. Is moved backward by the guide member 71 engaged with the joint 25.
Regulated by

In FIG. 12, a locked state in which the engaging shaft 73 is engaged with an engaging recess 73 provided on the outer periphery of the steering shaft 72 to prevent rotation of the steering shaft 72, and the engagement with the engaging recess 73 is released. The lock mechanism 26 that switches between an unlocked state and a state in which the steering shaft 72 can rotate is provided with a cam 74 provided in the joint 25 and a through hole 75 that allows the cam 74 to pass therethrough, and can slide on the guide member 71. , A lock pin 77 connected to the slider 76 so as to be engageable with the engagement recess 73 of the steering shaft 72, and a cap 78 and a slider 76 attached to the outer end of the guide member 71. The slider 7 is provided in a direction in which the lock pin 77 is engaged with the engagement recess 73.
A spring 79 is provided on the inner surface of the through-hole 75 to form a contact surface 80 that contacts the cam 74 to determine the position of the slider 76.

In such a lock mechanism 26, the rotor 2
4 is a position other than the LOCK position, that is, the ACC position;
In the N position and the START position, the lock pin 77 is disengaged from the engagement concave portion 73 and the steering shaft 7
When the rotor 24 is in the LOCK position while the cam 74 is in the state allowing the rotation of
The turning position is such that the slider 76 is moved by the spring force of the spring 79 so that the engaging member 7 is engaged with the engaging concave portion 73.
On the other hand, the movement of the key slider 27 in accordance with the insertion of the key 23 into the key hole 44 of the rotor 24 causes the operation lever 2 to move.
8, the rear end of the slider 76 is rotated in a direction to approach the slider 76.
When the lock mechanism 26 enters the unlocked state in response to the rotor 24 being set to a position other than the LOCK position, the rear end of the operating lever 28 is engaged to hold the lock mechanism 26 in the unlocked state. A recess 81 is provided.
That is, even if the rotor 24 is at the LOCK position, the key hole 4
By pulling out the key 23 from the 4, the operating lever 28
As long as the lock mechanism 26 does not rotate in a direction that causes the rear end of the lock mechanism 26 to be disengaged from the engagement recess 81, the lock mechanism 26 is not locked.

In FIGS. 13 to 16, the interlock mechanism 31 enables rotation between a rotation preventing position for preventing the rotation of the rotor 24 and a rotation allowing position for allowing the rotation of the rotor 24. A lever 82 supported by the housing 21, a plunger 83 having one end engaged with the lever 82, and the other end of the plunger 83 are inserted into the housing 21 and attached to the housing 21. A solenoid 84 which exerts an electromagnetic force for rotating the rotation preventing position, a return spring 85 which exerts an elastic force for urging the lever 82 toward the rotation allowing position, and a part of the solenoid 84, a plunger 83, a solenoid 86 covering the lever 82 and the return spring 85, and a cover 86 resiliently engaged with the housing 21.

The joint 25, which rotates integrally with the rotor 24, is integrally provided with a regulating protrusion 87 projecting outward. The lever 82 has one end thereof in contact with the regulating protrusion 87 to form a joint. 13, the one end is retracted to the side so as to avoid contact with the regulating protrusion 87, and the joint 25, that is, a rotation preventing position (a position shown by a chain line in FIG. 13) for preventing the rotation of the rotor 24. It is rotatable between a rotation allowing position (a position indicated by a dotted line in FIG. 13) that allows the rotation of the rotor 24.

A mounting portion 88 for mounting the interlock mechanism 31 is provided on a side portion of the housing 21.
The mounting portion 88 has a flat mounting surface 89 on which a coil (not shown) is incorporated and a solenoid 84 formed in a rectangular box shape is brought into contact therewith.

The mounting portion 88 has a regulating surface 90 which is opposite to the plunger 83 as shown in FIG. 14 and is in contact with one side surface of the end of the solenoid 84, and a plunger 83 side as shown in FIG. A regulating surface 91 abutting on the other side surface of the end of the solenoid 84 is formed along a plane perpendicular to the mounting surface 89, and from one side of the end of the solenoid 84 on the side opposite to the plunger 83. A regulating groove 93 for fitting the projecting regulating flange 92 is formed on the regulating surface 90. Therefore, the solenoid 84 is fixedly positioned in the state of contact with the mounting surface 89.

The cover 86 is formed of a synthetic resin, and a substantially half of the solenoid 84 on the plunger 83 side is covered with the cover 86. In addition, as shown in FIG. 18, the engaging projection 96 that resiliently engages with a flange 95 that projects laterally from one side surface of the solenoid 84 regulated by the regulating surface 90, On the other side of the regulated solenoid 84, an engaging claw 97 resiliently engaged with the solenoid 84 is provided on the cover 86.
Is resiliently engaged with the solenoid 84.

The plunger 83 is inserted into the solenoid 84 so that it can be inserted and removed.
Is detachably engaged with the other end of the lever 82. 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 has
An engaging portion 85a that engages with the other end of the lever 82 is provided.

Accordingly, a solenoid 84, a plunger 83 inserted into the solenoid 84, a lever 82 engaged with one end of the plunger 83, and a coiled return surrounding the plunger 83 between the lever 82 and the solenoid 84 A spring 85 and a cover 86 which is resiliently engaged with the solenoid 84 can form a solenoid assembly unit 98, and the solenoid assembly unit 98 is mounted on a mounting portion 88 of the housing 21.

Further, the cover 86 which is resiliently engaged with the solenoid 84 has a separation preventing wall 86a which opposes one end of the plunger 83 projecting from the solenoid 84 and prevents the plunger 83 from separating from the solenoid 84. It is provided to prevent the plunger 83 from being detached from the solenoid 84 when the solenoid assembling unit 98 is assembled.

The solenoid assembly unit 98 is attached to the mounting section 88.
The mounting wall 88 of the housing 21 is provided with a regulating wall 99 that engages with the inner surface of the detachment preventing wall 86a of the cover 86 when it is mounted on the mounting section 88 of the solenoid assembly unit 98. When mounted on the plunger 83, the moving end of the plunger 83 protrudes from the solenoid 84,
That is, the rotation end of the lever 82 toward the rotation allowable position side is regulated. Moreover, the engaging slit 1 is formed in the regulating wall 99.
00 is provided, and an engaging projection 101 projecting from the inner surface of the separation preventing wall 86a is engaged with the engaging slit 100.

An engaging hole 102 is provided in the cover 86 at a position closer to the housing 21 than the detachment preventing wall 86a. It is engaged.

Referring to FIG. 19, an engaging hole 104 is provided on one side surface of cover 86, and has an approximately U-shaped cross-sectional shape, and is provided on engaging portion 88 so as to project therefrom. The engagement hole 104 is elastically engaged with the projection 105. Further, as shown in FIG. 20, on the other side of the cover 86, an engaging claw portion 107 which resiliently engages with an engaging concave portion 106 provided on the mounting portion 88 is provided integrally.

As described above, the cover 86 is resiliently 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 via the cover 86.

The other end 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 at an intermediate portion of the lever 82. Can be On the other hand, the engagement projection 1
A single screw member 109 penetrating through the mounting portion 88
The screw member 109 is provided with a shaft portion 109a that fits into the support hole 108 and rotatably supports the lever 82.

Next, the operation of this embodiment will be described. The key slider 27 mounted on the front end of the rotor 24 is made of a sintered alloy having a Rockwell hardness of 40 (HRC) or more. is there. Therefore, in order to exhibit the original function of the key slider 27 which slides along the one diameter line of the rotor 24 to rotate the operation lever 28 in accordance with the insertion and removal of the key 23 into and from the key hole 44. Since the complex shape required for the key slider 27 can be easily formed by using a sintered alloy,
The key slider 27 is set to a Rockwell hardness of 40 (HRC).
With the above high hardness, the key slider can be provided with a function as a conventional protector. That is, the insertion of an unauthorized tool other than the key 23 such as a slide hammer into the rotor 24
In addition, it is possible to reduce the number of parts by eliminating the need for a protector, which was required in the past, and to reduce the number of assembly steps by eliminating the need for assembling the protector. It becomes possible.

When the cylinder body 22 is inserted into and fixed to the housing 21, the resilient engaging member 40 is inserted into the housing groove 3.
8 and attached to the cylinder body 22, the cylinder body 22 may be inserted into the storage hole 34 of the housing 21. When the cylinder body 22 is inserted to the position where the engaging member 40 corresponds, the resilient engaging member 40 protrudes from the storage groove 38 and resiliently engages with the engaging groove 35, and the rotor 24
The movement of the cylinder body 22 along the rotation axis of the cylinder 22 is prevented. That is, only the resilient engaging member 40 is necessary for inserting and fixing the cylinder body 22 to the housing 21, and the number of components can be reduced. In addition, only the resilient engaging member 40 is mounted on the cylinder body 22. Therefore, the number of assembling work steps is also reduced.

Further, in the storage hole 34, the portion into which the cylinder body 22 is inserted is the first to fourth inner wall surfaces 3.
4a to 34d, the resilient engaging member 40 is provided with an engaging groove 35 in a plane orthogonal to the axis of the rotor 24, and first and second inner wall surfaces. 34a and 34b are resiliently contacted. Accordingly, the projection 37 of the cylinder body 22 resiliently engages with 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 third and fourth inner wall surfaces 34a, 34d are brought into contact with each other.
The rattling of the cylinder body 22 is prevented between the first and second inner wall surfaces 34a, 34b as the resilient engagement member 40 makes resilient contact with the first and second inner wall surfaces 34a, 34b.
The rattling of the cylinder body between 4b is prevented. Therefore, rattling of the cylinder body 22 in the storage hole 34 is effectively prevented.

Further, the resilient engaging member 40 is formed by bending a band-shaped metal plate whose width is in the direction along the rotation axis of the rotor 24, and is formed in the direction along the rotation axis of the rotor 24. , That is, the strength of the cylinder body 22 coming off the housing 21 can be increased.

When the shift lever is not in the parking position when the rotor 24 is set to the ACC position, the interlock mechanism 26 excites the solenoid 84 and engages the lever 82 with the restricting projection 87 of the joint 25 so as to engage the rotor. The interlock mechanism 26 is for preventing the rotation of the motor 24 from the ACC position to the LOCK position, and is necessary for an automatic vehicle. The interlock mechanism 26 includes a solenoid 84, a plunger 83, a return spring 85, and a cover 86.
Is mounted on the mounting portion 88 of the housing 21.

In the solenoid assembly unit 98, the cover 86 is resiliently engaged with the solenoid 84, surrounds the plunger 83, and surrounds the solenoid 84 and the lever 82.
A return spring 85 is provided between the return springs 85
The engagement of the engaging portion 85a of the plunger 83 with the lever 82 and the disengagement of the plunger 83 from the solenoid 84 are prevented by the disengagement preventing wall 86a provided on the cover 86 facing one end of the plunger 83. Therefore, when assembling the solenoid assembling unit 98, the solenoid 84, the plunger 83, the return spring 85, and the cover 86 can maintain a mutually connected state, and the solenoid assembling unit 98 must be assembled and prepared in advance. Can be.

Therefore, when assembling the steering lock device for an automatic vehicle, the housing 21
In order to assemble the steering lock device which does not require the interlock mechanism 26, the solenoid assembly unit 98 need not be attached to the housing 21, but only for the automatic vehicle and the manual vehicle. It is not necessary to prepare the housing 21 separately for each application, which is convenient.

The housing 84 includes a solenoid 84.
A mounting surface 89 for positioning and abutting the solenoid 84 is provided, and a cover 8 for holding the solenoid 84 between the mounting surface 89 and the mounting surface 89 is provided.
6 is resiliently engaged with a mounting portion 88 of the housing 21, and a single screw member 109 screwed to the mounting portion 88 is provided with a lever 8.
Since the shaft portion 109a for rotatably supporting the shaft 2 is provided, only a single screw member 109 is required for assembling the solenoid assembly unit 98 to the housing 21, thereby reducing the number of components. Can be.

By the way, from the ACC position of the rotor 24, L
At the time of the rotation operation to the OCK position, a pushing operation of the rotor 24 to the rear side is required, but such pushing operation is required. A first engaging surface 67 facing the rear side along a plane perpendicular to the rotation axis of the second member; and a second engaging surface facing the rear side along the plane at a rear side forming a step from the first engaging surface 67. The rotor 24 has a flat stopper tumbler 6 which can slide in a direction along the plane.
3 is attached.

Furthermore, the stopper tumbler 63 is
The inner surface of the cylinder body 22 enables the stopper tumbler 63 to be accommodated in the rotor 24 when the cylinder body 4 is inserted into the cylinder body 22, and the first and second engagement surfaces 67 and 68 are selectively used as stoppers. The tumbler 63 is resiliently urged in a direction for engaging the tumbler 63.
When the stopper tumbler 63 is engaged at the CK position, the second engagement surface 68 is disposed at the position where the stopper tumbler 63 is engaged.
Stopper tumbler 63 when in position other than CK position
The first engagement surface 67 is disposed at a position where the first engagement surface is engaged.

Therefore, when rotating the rotor 24 from the ACC position to the LOCK position, the stopper tumbler 63 is moved from the position where the stopper tumbler 63 is engaged with the first engagement surface 67 to the position where it is engaged with the second engagement surface 68. It is necessary to perform an operation of pushing in 24.

Since the stopper tumbler 63 is of a flat plate shape and can be press-formed, the manufacturing cost can be reduced.

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 rotor 24 is moved from the LOCK position to the ACC position.
Is relatively small when rotating the rotor 24, and therefore, the rotor 24 is moved from the LOCK position to A
It is possible to improve the operability by reducing the force required to rotate the motor toward the CC position.

Further, the stopper tumbler 63, which is a component having a structure for forcing a pushing operation at the time of rotating the rotor 24 from the ACC position to the LOCK position, also exerts a function of preventing the rotor 24 from coming off the cylinder body 22. And
It is possible to reduce the number of parts.

Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the appended claims. It is possible to do.

[0064]

As described above, according to the present invention, since the key slider is formed of a sintered alloy, it is possible to easily obtain the shape required for the key slider, By having a hardness of 40 (HRC) or more, the key slider can be provided with a function as a conventional protector, and the number of parts can be reduced by eliminating the need for a protector which has been conventionally required. Since the assembling work is not required, the number of assembling work steps can be reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal side view of a steering lock device in a state where a rotor is at an ACC position.

FIG. 2 is a longitudinal sectional side view corresponding to FIG. 1 in a state where a rotor is at a LOCK position.

FIG. 3 is a view as viewed in the direction of arrow 3 in FIG. 2;

FIG. 4 is an enlarged sectional view taken along line 4-4 of FIG. 1;

FIG. 5 is an enlarged sectional view of the rotor and the key slider taken along line 5-5 in FIG. 1;

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 a key slider.

FIG. 8 is an enlarged sectional view taken along line 8-8 of FIG. 1;

FIG. 9 is an enlarged sectional view taken along line 9-9 of FIG. 2;

FIG. 10 is a cutaway perspective view of rear ends of a cylinder body and a rotor viewed from the rear side.

FIG. 11 is a circumferential development view of an outer surface of a rear end portion of a cylinder body and a rotor.

FIG. 12 is an enlarged sectional view taken along line 12-12 of FIG. 1;

FIG. 13 is an enlarged sectional view taken along line 13-13 of FIG. 1;

FIG. 14 is a sectional view taken along line 14-14 of FIG.

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. 14;

18 is a sectional view taken along line 18-18 of FIG.

19 is a sectional view taken along line 19-19 of FIG.

20 is a sectional view taken along line 20-20 of FIG.

[Explanation of symbols]

 Reference Signs List 22 cylinder body 23 key 24 rotor 26 locking mechanism 27 key slider 28 operating lever 72 as operating member 72 steering shaft

Claims (1)

[Claims] 1. A fixed cylinder body (22), a rotor (24) inserted into said cylinder body (22) so as to be able to rotate by an inserted key (23), and a steering shaft (72). A lock mechanism (26) capable of switching between a locked state for preventing rotation and an unlocked state for enabling rotation of the steering shaft (72) in accordance with the rotation of the rotor (24); and the rotor (24). Key to (2
3) in accordance with the insertion of the key (23) and the removal of the key (23) from the rotor (24), the rotor (24) can be slid in a direction along one diameter line to enable the rotor (2) to slide.
4) When the key (23) is inserted into the rotor (24) and the key slider (27) mounted on the front end of the rotor (24), the lock mechanism (26) is held in the unlocked state. An operating member (28) provided between the key slider (27) and the lock mechanism (26) to allow the lock mechanism (26) to operate in the locked state when the key (23) is extracted.
And a key (23) at the front end of the rotor (24).
In a steering lock device with an unauthorized unlocking prevention function that prevents unauthorized tools other than the above from being inserted, the key slider (27) has a Rockwell hardness of 40 (HRC).
A steering lock device with a function for preventing unauthorized unlocking, characterized by being formed from the sintered alloy described above.