JP2512154Y2 - Steering lock device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a lock device, and more particularly to a steering lock device for controlling rotation of a steering shaft of an automobile.

2. Description of the Related Art In current automobiles, a steering lock for controlling a steering shaft and an ignition switch of the automobile at the same time is used, as disclosed in Japanese Patent Laid-Open No. 61-295154. This steering lock includes a key cylinder housed in a frame and rotated between a locked position and an unlocked position by a key, a cam rotated together with the key cylinder, a locked position engaged with a steering shaft, and this engagement. It has a locking rod that is moved by a cam and a spring between an unlocked position that is released, and an ignition switch that is operatively connected to the rear of the cam.

When you insert the key into the key cylinder and rotate it, the key
"LOCK position", "OFF position", "ACC position", "ON position" of engine, "START position" to operate the starter motor
Can be sequentially rotated to each position. When the key is removed at the "LOCK position", the key cylinder cannot rotate and the ignition switch is prohibited from operating, and the locking rod engages with the steering shaft to prevent rotation of the steering shaft and prevent theft. .

Further, in order to prevent the vehicle from suddenly starting at the time of starting the engine, a structure that cannot rotate to a lock position where the key inserted in the steering lock device can be removed unless the shift lever is shifted to the parking position when getting off is provided. desirable. This structure forces the driver to shift the shift lever to the parking position. Therefore, when the shift lever is rotated to the parking position, the key can be rotated to the lock position and the key can be removed from the key cylinder. In the locked position, the rotation of the steering shaft is blocked to prevent theft and also the movement of the shift lever from the parking position to another operating position is blocked.

For example, as described in Japanese Patent Application Laid-Open No. 60-135352, in a lock device for a shift lever, a control pin provided on the shift lever moves in the lengthwise direction of the operation lever by pressing a push button knob, With the rotation of the operation lever, the shift control plate is moved to each operation position. Also, when the shift lever is in the parking position, a bell crank that engages and disengages with the control pin on the shift lever is rotatably attached to the shift control plate, and the bell crank is biased by a spring in a direction to engage the control pin. And is operably connected to the sliding plate of the steering lock device via a remote control cable.

When the bell crank is engaged with the control pin in the parking position, the shift lever is restrained and cannot move from the parking position to another operation position, and the steering shaft is also locked and in the rotation preventing state. When the key is inserted into the steering lock device and rotated from the locked position to the start position during traveling, the engagement between the bell crank at the parking position and the control pin is released via the remote control cable. The remote control cable is usually a push-pull system consisting of both inner and outer cables. By pressing the push button knob, the restraint of the control pin is released, and the shift lever can be moved to another operation position.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, the shift lever locking device disclosed in Japanese Patent Laid-Open No. 60-135352 requires a spring for urging the bell crank in the direction of engaging the control pin at the parking position. There is a drawback that the score increases.
Moreover, since the bell crank interlocks with the movement of the control pin and does not interlock with the rotation operation of the shift lever, the travel stroke of the remote control cable is small, and the transmission response with the sliding plate of the steering lock device is lacking. There is.

On the other hand, there is also proposed a steering lock device provided with a rotation preventing means for stopping the rotation when the key cylinder is rotated from the unlock position to the lock position. This structure has a large number of parts and is difficult to mount on a steering lock device of a type in which a key cylinder moves axially when a key is inserted.

Therefore, an object of the present invention is to solve the above-mentioned drawbacks and to provide a steering lock device capable of rotating a key to a lock position after shifting a shift lever to a parking position and having a small number of parts.

Another object of the present invention is to provide a steering lock device capable of rotating the key to the lock position after the key cylinder moves in the axial direction when the key is inserted and the shift lever moves to the parking position.

Means for Solving the Problems A steering lock device according to the present invention comprises a key cylinder (16) rotatably arranged in a housing (11).
And a locking member movable between a locking position that blocks rotation of the key cylinder (16) and a non-locking position that does not block rotation when the key cylinder (16) is rotated from the unlock position to the lock position. (200), a control piece (201) slidable between a blocking position that prevents the locking member (200) from moving to a non-locking position and a non-blocking position that does not block the movement, and an automatic transmission A cable (140) for connecting the turning lever (130) moved by the shift lever (110) and the control piece (201) is provided. The control piece (201) has a locking member (200) when the shift lever (110) is in the parking position.
When the shift lever (110) is in a position other than the parking position, the locking member (200) is in the blocking position in the movement path. The key cylinder (16) has a cam (20) with which the locking member (200) is engaged.
3), the cam (203) has a locking groove (215) and an unlocking groove (2
16), an inclined surface (218) formed between the locking groove (215) and the unlocking groove (216), and a stopper surface (216a). The control piece (201) in the block position is the locking member (20
(0) is prevented from moving from the unlocking groove (216) to the locking groove (215), and the control piece (201) in the non-blocking position is locked by the locking member (2).
The movement of (00) from the unlocking groove (216) to the locking groove (215) is allowed.

In this steering lock device, a guide member (11i) for guiding the movement of the control piece (201) is provided in the housing (11).
The engaging portion (200) provided on the locking member (200) is provided on the outer surface of the locking member (200) by moving the locking member (200) to the non-locking position.
e) is projected to the moving position of the contact portion (201c) of the control piece (201) in the non-blocking position to prevent the control piece (201) from moving to the blocking position.

In the embodiment of the present invention, a key detection lever (33) rotatably arranged in the key cylinder (16) and a spring (29) for pressing the key cylinder (16) in the housing (11) are provided. . The locking member (200) is a cam (203)
Has an end portion (200d) disposed on the outside of the. The key detection lever (33) is rotated by a key (28) inserted in the key cylinder (16). As the key detection lever (33) rotates, the key cylinder (16) is moved axially against the elasticity of the spring (29), and the end (200d) of the locking member (200) is locked. The release part (215) formed in (215)
It passes through a) and moves relatively into the locking groove (215). When the key (28) is pulled out from the key cylinder (16) from the unlocked position to the locked position, the locking member (200)
The end (200d) of the lock passes through the opening (215a) and the locking groove (21
Separate from 5).

Action When the shift lever (110) is in the parking position,
By moving the locking member (200) to the non-locking position, the engaging part (200e) of the locking member (200) is in the non-blocking position. The moving position of the contact part (201c) of the control piece (201). To prevent the control piece (201) from moving to the block position. Therefore, the shift lever (11
It is possible to avoid the risk of starting the engine in the state where 0) is moved to a position other than the parking position.

Further, when the key (28) is not inserted in the key cylinder (16), the locking member (200) has the locking groove (21) of the cam (203).
It is placed away from 5). When the key (28) is inserted into the key cylinder (16), the key (28) engages with one end of the key detection lever (33) and the key detection lever (33) is rotated, so that the key cylinder (16 ) Is moved inward. By moving the key cylinder (16) inside, the locking member (200)
Is arranged in the locking groove (215) of the cam (203). Furthermore,
When the key (28) is rotated from the locked position to the unlocked position, the locking member (200) is moved along the inclined surface (218) of the cam (203) and placed in the unlock groove (216). At this time, the engaging portion (200e) of the locking member (200) is moved to the control piece (20e).
The control piece (201) can be moved from the non-blocking position to the blocking position because it is separated from the moving position of the contact portion (201c) of 1).

When the key (28) is rotated from the unlocked position to the locked position, the locking member (200) contacts the stopper surface (216a) of the cam (203) to prevent the key cylinder (16) from rotating. At this time, if the shift lever (110) is located at a position other than the parking position, the control piece (201) will engage the locking member (200).
Prevents manual movement of the. However, when the shift lever (110) is in the parking position, the control piece (201) does not prevent the locking member (200) from moving, so the key (28)
It is possible to pull out by rotating the to the lock position.

The control piece (201) is provided so as to be slidable or rotatable with respect to the housing (11), and can be smoothly operated with a small number of parts. When the control piece (201) is rotatably provided,
Contact part (201c) of control piece (201) at block position
Is arranged at a dead point and prevents the locking member (200) from moving.

Embodiment An embodiment of the steering lock device according to the present invention will be described below with reference to FIGS.

As shown in FIG. 18 and FIG. 19, the shift lever 110 rotatably attached at the lower end through the shaft support 116
The control plate 120 is rotated to the parking position P, the retracted position R, the neutral position N, and the traveling position provided in the shift hole 121. By pushing the push button knob 111 provided on the upper part of the shift lever 110, the rod 113 arranged in the lever tube 112 moves in the length direction, and is provided at the tip of the rod 113 against the elasticity of the pressing spring 115. The shifted shift pin 114 is pushed down. As shown in FIG. 18, the pressing spring 11
If the shift pin 114 is locked at the parking position P by the elasticity of 5, the shift lever 110 cannot be moved from the parking position P to another operation position. The structure of the shift lever 110 is known, and detailed description thereof will be omitted.

The rotating lever 130 is rotatably supported below the parking position P of the control plate 120 via a support shaft 131. The pivot lever 130 has a pin engaging end portion 130a and a cable connecting end portion 130b formed on both sides of the support shaft 131, respectively. Shift lever 11
When the push button knob 111 of 0 is pressed, the shift pin 114 is pressed downward against the pressing spring 115 and reaches the inside of the pin engaging end portion 130a of the rotating lever 130. When the shift pin 114 is moved from the parking position P to the retracted position R by the rotation of the shift lever 130, the shift pin 114 is locked by the pin engaging end portion 1.
By engaging with 30a, the rotating lever 130 is rotated around the support shaft 131 in the counterclockwise direction. The cable at the cable connection end 130b
One end of the cable 140 is connected, and the other end of the cable 140 is connected to the control piece 150 of the steering lock device 10. Rotating lever 1
When the 30 is rotated from the parking position P to the retracted position R about the support shaft 131 as a fulcrum, the shift pin 114 is engaged with the pin engaging end portion 1
Moving to the control hole 121 through between 30a and the end 122,
As shown, the cable connection end 130b is
Pull. When the shift pin 114 is separated from the pin engaging end portion 130a, the rotation lever 130 is held in the rotated posture. When the shift lever 110 is returned to the parking position P again, the rotating lever 130 is returned from the position rotated by the shift pin 114 returning to the parking position P to the initial parking position shown in FIG.

As shown in FIGS. 2 and 8, the steering lock device 10 has a housing 11, a case 12 arranged in the housing 11, and a cover 13 fixed to a front portion of the case 12. A key cylinder 16 having a flange portion 15 is rotatably arranged in a hole 14 formed in the case 12.
A plurality of tumbler holes 16c are formed in the key cylinder 16,
A tumbler 16b is attached to each tumbler hole 16c.

The steering lock device 10 is a locking rod that is disengageably attached to a steering shaft (not shown).
18, a holder 19 for holding the locking rod 18 in the housing 11, and a hanger 27 provided on the locking rod 18.
A cam portion 16a formed on the key cylinder 16, a connecting member 23 for transmitting the rotation of the key cylinder 16 to the ignition switch 80, a back plate 24 arranged between the ignition switch 80 and the holder 19, It has a spring 29 as a spring member which is arranged between the member 23 and the back plate 24 and biases the connecting member 23 and the key cylinder.

The housing 11 is formed on the front wall 11a and has a key 28 (tenth
(Fig. 8), front opening 11b (Fig. 8), rear opening 11c for mounting the ignition switch 80, and holder 1
9, having a locking rod 18 and an intermediate opening 11d into which the back plate 24 is inserted.

A hole 16c having a non-circular cross section is formed at the inner end of the key cylinder 16. One end of the shaft portion 23a of the connecting member 23 having a non-circular cross section is inserted into the hole 16c. The connecting member 23 includes a shaft portion 23a that passes through a U-shaped groove 24c formed in the back plate 24, and a shaft portion 23a.
Abutment portion 23 that projects more radially and receives spring 29
with b and. The other end of the shaft 23a is an ignition switch.
80 is inserted into the rotating member 80b.

The holder 19 includes an axial opening 19a, a lateral opening 19b, and
It has a top wall 19c and a rear wall 19d. The axial opening 19a of the holder 19 has a through hole 19e formed in the rear wall 19d, and the through hole 1
A connecting member 23 and a spring 29 are arranged in 9e. In addition, the locking rod 1 is inserted into the lateral opening 19b of the holder 19.
8 is slidably arranged. The locking rod 18 has a substantially U shape having a gap 18c due to the arm portions 18a, and a slit 18b is provided at an upper portion of each arm portion 18a. The hanger body 27a of the hanger 27 is attached to the slit 18b. Bent portions 27b are formed at both ends of the hanger body 27a, and cam contact portions 27c are formed at the front portion of the hanger body 27a. In addition, a bent portion 27d that comes into contact with the rear wall 19d of the holder 19 is provided at the rear portion of the hanger body 27a, and a protrusion is provided at the center of the hanger body 27a.
27e is provided. A spring 39 is arranged between the hanger 27 and the top wall 19c of the holder 19, and the spring 39 presses the locking rod 18 in the direction in which the locking rod 18 projects from the housing 11. As shown in FIG. 12, one end of the spring 39 has a hanger.
The protrusion 27e of 27 is fitted, and the other end abuts on the top wall 19c. Therefore, the locking rod 18 is the cam portion of the key cylinder 16.
By the movement of the hanger 27 that abuts against the 16a and the elasticity of the spring 39, the hanger 27 is attached so as to be able to move forward and backward from the hole 19 of the housing 11.

The back plate 24 arranged at the rear of the holder 19 has a pair of arm portions 24a forming a U-shaped groove 24c in which the connecting member 23 is arranged.
And an inclined surface 24b formed along the inner surface of the groove 24c and guiding the spring 29, and a projection 24d formed at the end of each arm 24a. The protrusion 24d is arranged in the hole 11e formed in the housing 11. Further, the back plate 24 has one main surface 24e for receiving the spring 29 and the other main surface 24f facing the ignition switch 80. A recess 24g for receiving the protrusion 80a of the ignition switch 80 is formed on the other main surface 24f.

A locking rod 20 is attached to the case 12 so as to be slidable in the length direction, and a dog 22 is attached to a hole 21 formed in a flange portion 15 of the key cylinder 16 so as to be slidable in the radial direction.
Since the locking rod 20 and the dog 22 have the same structure and function as the check lever and the dog disclosed in Japanese Patent Publication No. 60-42055, detailed description thereof will be omitted.

As shown in FIG. 2, the flange portion 15 of the key cylinder 16
A slot 30 is formed at a right angle to the key groove 26 into which the key 28 is inserted. Slot 30 is a key cylinder
It has 16 horizontal slots 31 extending in the radial direction, and vertical slots 32 formed at right angles to the horizontal slots 31 and parallel to the keyways 26. Inside the lateral slot 31, substantially V-shaped radial walls 36 and 37 (FIG. 8) are formed, and a notch surface 38 is formed in the front portion of the case 12.

The key detection lever 33 mounted in the slot 30 has a lever body 34 having a substantially L-shaped rectangular cross section, and a pair of pins 35 protruding from the lever body 34 at a right angle. The lever body 34 of the key detection lever 33 has one end 34a and the other end 34b. The length from the pin 35 to the other end 34b is larger than the length from the pin 35 to the one end 34a. Therefore, in this embodiment, when the key detection lever 33 rotates about the pin 35, the key cylinder
You can get 16 big moving strokes. In any case, the length from the pin 35 to the one end 34a and the other end 34b can be set arbitrarily in design.

When the key detection lever 33 is mounted in the slot 30, the lever body 34 is arranged in the horizontal slot 31 and the pin 35 is arranged in the vertical slot 32. Although not shown in detail, the vertical slot 32 has a shape complementary to the pin 35 having a circular cross section and has a semi-cylindrical shape. Therefore, when the key detection lever 33 is mounted in the slot 30, the lever main body 34 is swingably arranged in the horizontal slot 32 around the pin 35 arranged in the vertical slot 32.

The head portion 15 of the key cylinder 16 is provided with a recess 41 into which a half-moon shaped guard plate 40 made of hard metal is mounted. A hole 42 through which the key 28 passes is formed in the guard plate 40. The guard plate 40 is the key groove 26 of the key cylinder 16.
When a tool is illegally inserted inside, it prevents the tool from entering.

The optical detection device 70 and its annexed device 71 provided between the front wall 11a of the housing 11 and the cover 13 are the actual detector 63-129.
It has the same function as the device disclosed in the 064 publication. The optical detection device 70 has an opening formed in the guard plate 40.
A protrusion 72 to be inserted into 43 is provided. Guard plate 40
Is an annular projection 11k formed around a front opening 11b formed in the front wall 11a of the housing and a head portion 15 of the key cylinder 16.
It is placed between and. However, the guard plate 40 is attached to the protrusion 72 of the optical detection device 70 and is separable from the head 15 of the key cylinder 16. Therefore, the guard plate 40
Cannot move in the axial direction and can only rotate. Since the key detection lever 33 rotates when the key 28 is inserted into the key groove 26 of the key cylinder 16, the guard plate 40 does not move in the axial direction.

The locking rod 20 arranged in the case 12 extends rearward along the length direction of the key cylinder 16 and the connecting member 23.
The front end 50 of the locking rod 20 is the flange of the key cylinder 16.
It comes into contact with the cam 51 (FIG. 9) formed on the member 15. The rear end 58 of the locking rod 20 is a notch 12a formed in the case 12.
(Fig. 8). Case 12 has cutout 12a
A right-angled cutout 12b is formed in the
12c is placed. The metal receiver 12c contacts the rear end portion 58 of the locking rod 20 to prevent the metal rod 12c from falling off.

As shown in FIG. 9, the cam 51 has a hole into which the dog 22 is fitted.
A flat portion 52 formed in front of 21, a slant portion 53 that communicates with the flat portion 52, and a step portion 54 formed at the end of the slant portion 53,
A lower portion 55 formed below the step portion 54, a rising portion 56 formed in the lower portion 55 adjacent to the hole 21, and a return connecting the rising portion 56 and the flat portion 52 passing above the hole 21. And part 57.
The return portion 57 is formed outside the dog 22 in the radial direction. When the front end portion 50 of the locking rod 20 comes into contact with the inclined portion 53 and is moved rearward, the rear end portion 58 of the locking rod 20 penetrates into the gap 60 formed on the lower surface of the hanger 27.

As shown in FIG. 1, a spring 63 and a metal ball 64 are arranged in a hole 62 formed in the case 12 in the radial direction. The spring 63 is fixed to the case 12 by the cover 65. Since the ball 64 presses the locking rod 20 inward in the radial direction by the spring 63, the front end portion 50 of the locking rod 20 always contacts the cam 51. In addition, a spring 59 is provided between the step portion 58 provided on the locking rod 20 and the case 12 so that the locking rod 20 is provided.
Is wound around. Therefore, the locking rod 20 and the key cylinder
16 is constantly urged forward by a spring 59. An ignition switch 80 is mounted in a recess 65 that forms a rear opening 11c formed in the rear of the housing 11.

In addition, a fixture frame for fixing the steering lock device 10 to the steering column is provided under the housing 11.
85 is installed. Fixer frame 85 is housing 11
Has an opening 85a to be fitted to the protrusion 11g formed in the lower part of the and a through hole 85b into which the fixer bolt 86 is inserted. The fixer bolt 86 inserted into the through hole 85b is fixed to the screw hole 11h of the housing 11.

As shown in FIGS. 1 and 2, the housing 11 has a locking position that prevents the key cylinder 16 from rotating when the key cylinder 16 rotates from the unlock position to the locking position, and a non-locking position that does not prevent the rotation of the key cylinder 16. Locking member 200 movable between
And the shift lever 110 of the automatic transmission moves to the parking position P.
When it is in a position other than the above, a block position that prevents the locking member 200 from moving to the non-locking position and a control piece 201 that is movable between the non-blocking positions that does not block the movement are provided. The locking member 200 and the control piece 201 are covered by a cover 205. The cover 205 is provided with a claw portion 205a that is locked to the corner portion 11j of the housing 11.

The locking member 200 is slidably attached to the housing 11, has a knob 200a that is pressed by a manual operation, and a locking portion 200b fixed to the knob 200a. The locking portion 200b has a long hole 200c, and the pin 202 fixed to the housing 11 is provided in the long hole 200c.
Are fitted. Further, the locking portion 200b has an end portion 200d that engages with the cam 203 formed on the key cylinder 16 and an engaging portion 200e that can contact the control piece 201. As shown in FIG. 7, the cam 203 has a locking groove 215, an unlocking groove 216, an inclined surface 218 formed between the locking groove 215 and the unlocking groove 216, and a stopper surface 216a. A part of the locking groove 215 has an opening 215a through which the locking member 200 passes. As shown in FIG.
No wall surrounding the locking groove 215 is provided in 5a. When the locking portion 200b of the locking member 200 is in the unlocking groove 216, the locking member 200 is in the locking position and contacts the stopper surface 216a.
When the knob 200a of the locking member 200 is manually pushed inward from this position, the locking portion 200b is disengaged from the stopper surface 216a and moved to the non-locking position.

As shown in FIGS. 1 and 2, the control piece 201 has a long hole 201.
It has a, a round hole 201b, and a contact portion 201c protruding laterally. A projection 11i as a guide member formed on the housing 11 is fitted into the long hole 201a. Further, a holder 204 for connecting to a cable is connected to the round hole 201b. Therefore,
The rotating lever 130 moved by the shift lever 110 and the control piece 201 are connected via a cable 140. Control piece 201
Is slidably arranged with respect to the housing, and the contact portion 20
When 1a is in the position shown by the solid line in FIG. 1, the control piece 201 is in the non-blocking position, and when it is in the position shown by the dotted line, it is in the blocking position. The contact portion of the control piece 201 is arranged in the movement path of the locking member 200 at the block position.

Further, when the key cylinder 16 is in the lock position, the engaging portion 200e of the locking member 200 is arranged in the moving passage of the contact portion 201c of the control piece 201. Therefore, the shift lever 110 cannot be moved to a position other than the parking position P unless the key cylinder 16 is rotated from the locked position to the unlocked position. Therefore, at the parking position P, the locking member
Reference numeral 200 projects to the movement position of the control piece 201 in the non-blocking position and prevents the control piece 201 from moving to the blocking position. Therefore, it is possible to avoid the risk of the shift lever 110 moving to a position other than the parking position P, rotating the key cylinder 16 to the unlock position, and starting the engine.

When assembling the steering lock device 10, the guard plate 40 is inserted from the rear opening 11c of the housing 11 and brought into contact with the front wall 11a. In this state, the optical detection device 70,
The auxiliary device 71 and the cover 13 are attached to the outside of the front wall 11a of the housing 11 to fix the guard plate 40. afterwards,
The case 12 incorporating the dog 22, the lever 33, the locking rod 20, the spring 63, and the ball 64 is arranged in the housing 11 through the rear opening 11c. Then, the locking rod 18
The holder 19 incorporating the hanger 27 and the spring 39 as a subassembly is arranged in the housing 11 through the intermediate opening 11d. In this state, the connecting member 23 is inserted through the through hole 19e formed in the rear wall 19d of the holder 19 and one end of the shaft portion 23a is inserted into the hole 16c of the key cylinder 16, and then the spring 2
The shaft 9 is wound around the shaft portion 23a so that the 9 comes into contact with the contact portion 23b. Further, the back plate 24 is inserted into the rear portion of the holder 19 from the intermediate opening 11d. At this time, the connecting member 23 relatively passes through the groove 24c of the back plate 24, and the end of the spring 29 contacts the inclined surface 24b. Therefore, the spring 29 is compressed inward as the back plate 24 is inserted, and is automatically placed in a predetermined position. After mounting the back plate 24 in the housing 11 as shown in FIG. 1, the ignition switch 80 is arranged in the recess 65. Ignition switch 80 having a key detection switch (not shown)
Is an elastic claw 81 that engages with a hole 11f formed in the housing 11.
Is provided, and the elastic claw 81 allows the ignition switch 80
Is prevented from falling off. Also, the ignition switch 80
Since the protrusion 80a of the back plate 24 fits into the recess 24g of the back plate 24,
Is prevented from moving. In this state, when the steering lock device 10 is attached to the steering column (not shown), the holder 19 and the back plate 24 are fixed by abutting on the sleeve (not shown) of the steering column. Therefore, when installed on the steering column, the ignition switch 80
Even if the back plate 24 is removed from the recess 65, the back plate 24 cannot be removed.

When the key is not inserted into the key cylinder 16 of the steering lock device 10, the end portion 200d of the locking member 200 has the cam 203.
Is separated from the locking groove 215. When the key 28 is inserted into the key groove 26 of the key cylinder 16, the tip of the key 28 comes into contact with one end 34a of the lever main body 34 of the key detection lever 33, and as shown in FIG. 8 and FIG. The key detection lever 33 is rotated, and the other end 34b of the lever body 34 presses the inner surface of the cover 13. The key cylinder 16 is moved inward by the key detection lever 33 against the elasticity of the springs 29 and 59.

As shown in FIG. 14, the cam portion 16a is moved to a position where it can be engaged with the cam contact portion 27c of the hanger 27. At this time, the second
The rear end portion 23a of the connecting member 23 shown in the figure switches the key detection switch built in the ignition switch device,
Generates a key detection signal. Also, as shown in FIG.
The contact portion 23b of the connecting member 23 is in a state of being inserted between the pair of arm portions 18a of the locking rod 18. In this state, the locking member 200 is arranged in the locking groove 215 of the cam 203.

Next, when the key 28 is rotated together with the key cylinder 16 from the “LOCK position” to the “OFF position”, the front end portion 50 of the locking rod 20 moves from the flat portion 52 of the cam 51 to the inclined portion 53.
Further, when the key 28 is rotated, the front end 50 is relatively inclined.
It is moved backwards along 53 against the elasticity of spring 59. At this time, the cam portion 16a of the key cylinder 16 causes the cam contact portion 27c to move from the locked position shown in FIG.
4 Moved to the unlocked position shown in Fig. Therefore, the locking rod 18 is moved to the unlock position separated from the groove (not shown) of the steering shaft. Also,
As shown in FIG. 13, the rear end portion 58 of the engaging rod 20 has a hanger.
It penetrates into the gap 60 formed on the lower surface of 27. Engaging rod
When the rear end portion 58 of the 20 is inserted into the gap 60 with a sufficient length,
The front end portion 50 is moved radially inward from the step portion 54 of the cam 51 to the lower portion 55 by the pressing force of the spring 63 and the ball 64. Further, the key 28 can be rotated to rotate the ignition switch device to the "ACC position", the "ON position" and the "START position".

When the key is rotated from the locked position to the unlocked position, the locking member 200 is moved along the inclined surface 218 of the cam 203 and arranged in the unlock groove 216. At this time, the locking member 200
The engaging portion 200e is moved from the locking position in the moving passage of the contact portion 201c of the control piece 201 to the front non-locking position separated from the moving passage.

When the key is rotated from the unlocked position to the locked position, the end portion 200d of the locking member 200 has the stopper surface 216a of the cam 203.
And the rotation of the key cylinder 16 is blocked. Here, when the shift lever 110 is located at a position other than the parking position P, the control piece 201 is located at the block position shown by the dotted line in FIG. 1, so that the locking member 200 is prevented from moving by manual operation. However, when the shift lever 110 is in the parking position P, the control piece 201 is in the non-blocking position shown by the solid line in FIG.
The movement of 0 is not blocked. Therefore, it is possible to manually push the locking member 200 from the non-locking position to the locking position, and then rotate the key to the lock position to remove the key.

When the key 28 is turned from the ON position to the lock K position, the front end portion 50 of the locking rod 20 moves to the rising portion 56 of the lower portion 55 of the cam 51 shown in FIG. However, since the key 28 is inserted into the key groove 26 of the key cylinder 16, the dog 22 projects radially outward, and the front end portion 50 abuts the inner surface 22a of the dog 22. Therefore, until the key 28 is pulled out from the key groove 26 of the key cylinder 16, the rear end portion 58 of the locking rod 20 is locked to the hanger 27 in the gap 60 of the locking rod 18, and the locking rod 18 is held in the unlocked state. To be done. Key in locked position
When removing 28 from the key groove 26 of the key cylinder 16, the dog 22
Is moved inward in the radial direction, the locking rod 20 is returned by the spring 59 to the flat portion 52 through the return portion 57. At the same time, the key cylinder 16 is moved by the springs 29 and 59 from the inner position shown in FIGS. 10 and 13 to the outer position shown in FIG. Therefore, the key detection switch in the ignition switch 80 detects the removal of the key 28. Also,
The rear end portion 58 of the locking rod 20 escapes from the gap 60 and the hanger 27
Is disengaged and the locking rod 18
The elastic force of 39 causes it to project to the lock position shown in FIG.

As described above, when the key 28 is inserted into the steering lock device 10, the key 28 engages with one end of the key detection lever 33 and rotates the key detection lever 33. Therefore, the other end of the key detection lever 33 is covered with the guard plate 40 through the cover 13
Move the key cylinder 16 inward while applying reaction force to
Activate the key detection switch in the ignition switch device. Housing provided at the front of the key cylinder 16
The front wall 11a of 11 has a function of preventing the key cylinder 16 from being pulled out. In addition, in the present embodiment, it is possible to prevent an unauthorized act of destroying the steering lock device 10 by inserting a tool into the steering lock device 10 by the guard plate 40.

The above embodiments of this invention can be modified. For example,
In the above-described embodiment, an example in which the present invention is applied to a horizontal steering lock device in which the control piece 201 slides in a straight line is shown. In a horizontal steering lock device, the longitudinal axis of the steering lock device is arranged laterally with respect to the axis of the steering column. On the other hand, in the vertical steering lock device, the longitudinal axis of the steering lock device is arranged substantially parallel to the axis of the steering column. 15 to 17 show an example in which the present invention is applied to a vertical steering lock device. In this example, the control piece 20
1 is rotatably arranged, but it is also possible to change the structure to be opposite to each other. In these drawings, the same parts as those shown in FIGS. 1 to 15 are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIGS. 15 to 17, holes 201a and 201b are formed in the control piece 201, and a contact portion 201c is provided at the opposite end of the hole 201b. The hole 201a is fitted into the protrusion 11i formed as a guide member in the housing 11, and the control piece 201 is rotatably held. A holder 204 for connecting the cable 140 is attached to the hole 201b. Further, the housing 11 is provided with a stopper 11j that comes into contact with the contact portion 201f of the control piece 201. The control piece 201 shown by the solid line in FIG. 15 is at the non-block position, and the dotted line shows the block position. Shift lever 110
Is in the parking position P, the cable 140 is in the push position, so the control piece 201 is in the non-blocking position shown by the solid line. When the shift lever 110 is at a position other than the parking position P, the cable 140 is at the pull position, so the control piece 201 is at the block position.

In the above configuration, the control piece 201 is in the non-blocking position.
The contact portion 201c of does not contact the engagement portion 200e of the locking member 200. Therefore, the knob 200a of the locking member 200 can be manually moved from the locked position to the unlocked position. Further, at the block position, the contact portion 201c of the control piece 201 contacts the engagement portion 201e of the locking member 200. In this case, the contact portion 2 of the control piece 201
01f is in contact with the stopper 11j of the housing 11, and the contact portion 201 is at the dead point of the stopper 11i or beyond the dead point when viewed from the projection 11i which is the rotation center of the control piece 201. Therefore, even if the knob 200a of the locking member 200 is manually pressed, a rotational force that rotates counterclockwise in FIG. 15 is applied to the control piece 201, and the contact portion 201f comes into contact with the stopper 11j to control. Piece 201 cannot be rotated clockwise.
In this way, the control piece 201 is provided so as to be slidable or rotatable with respect to the housing, so that the number of parts is small and the control piece 201 can be operated smoothly.

Also in the embodiment shown in FIGS. 15 to 17, similarly to the above embodiment, when the key cylinder 16 is in the lock position, the engaging portion 200e of the locking member 200 is the contact portion 201c of the control piece 201. It is located in the moving passage. Therefore, the shift lever 110 cannot be moved to a position other than the parking position P unless the key cylinder 16 is rotated from the locked position to the unlocked position. Therefore, at the parking position P, the locking member 200 projects to the moving position of the control piece 201 in the non-blocking position, and prevents the control piece 201 from moving to the blocking position.
Therefore, it is possible to avoid the risk of the shift lever 110 moving to a position other than the parking position P, rotating the key cylinder 16 to the unlock position, and starting the engine.

As described above, according to the present invention, the control piece and the locking member can be smoothly operated with a small number of parts, and a steering lock device having a structure in which the key cylinder moves in the axial direction is also provided. It is possible to improve the safety at the time of key operation.

[Brief description of drawings]

1 is a plan view of a steering lock device according to the present invention, FIG. 2 is an exploded perspective view, FIG. 3 is a side view, FIG. 4 is a sectional view taken along the line IV-IV of FIG. 1, and FIG. FIG. 3 is a sectional view taken along line VV of FIG. 3, FIG. 6 is a partial sectional view showing a mounting state of a locking member, FIG. 7 is a developed view of a cam, and FIG. 8 is a sectional view of a steering lock device according to the present invention. 9 is a perspective view of a cam, FIG. 10 is a sectional view of a steering lock device showing a state in which a key is inserted, FIG. 11 is a sectional view taken along line XI-XI of FIG. 10, and FIG. Sectional view taken along the line XII-XII in FIG.
Fig. 13 is a sectional view of the steering lock device in the unlocked position, and Fig. 14 is XIV- in Fig. 10 in the unlocked position.
A sectional view taken along the line XIV, FIG. 15 is a side view of a steering lock device showing another embodiment of the present invention, FIG. 16 is an exploded perspective view of the steering lock device of FIG. 15, and FIG. 17 is a plan view. FIG. 18 is a side view of the shift lever, FIG. 19 is a partially enlarged view when the shift lever is operated, and FIG. 20 is a partially enlarged view when the shift lever is further operated. 10 …… Steering lock device, 11 …… Housing, 11
i …… Protrusion (guide member), 16 …… Key cylinder, 28…
… Key, 29 …… Spring, 33 …… Key detection lever, 11
0 …… Shift lever, 140 …… Cable, 200 …… Locking member, 200d …… End, 200e …… Engagement part, 201 …… Control piece, 2
01c …… Abutting part, 203 …… Cam, 215 …… Locking groove, 215a…
… Open part, 216 …… Unlocking groove, 216a …… Stopper surface, 218…
… Sloping surface

Claims (2)

(57) [Scope of utility model registration request] 1. A key cylinder (16) rotatably arranged in a housing (11) and preventing rotation of the key cylinder (16) when the key cylinder (16) is rotated from an unlock position to a lock position. Locking member (200) movable between a locking position and a non-locking position that does not block rotation, a blocking position that blocks the locking member (200) from moving to the non-locking position, and a blocking position Control strip (201) slidable between the non-blocking position and the shift lever (11) of the automatic transmission.
Rotating lever (130) and control piece (20)
1) is connected to a cable (140), and the control piece (201) is in the non-blocking position that allows the movement of the locking member (200) when the shift lever (110) is in the parking position. When the lever (110) is in a position other than the parking position, the lever (110) is in the block position in the moving passage of the locking member (200), and the key cylinder (16) is in the cam (203) with which the locking member (200) engages. The cam (203) has a locking groove (215), an unlocking groove (216), and an inclined surface (218) and a stopper surface formed between the locking groove (215) and the unlocking groove (216). (216a) and the control piece (201) in the blocking position prevents the locking member (200) from moving from the unlocking groove (216) to the locking groove (215), and the control piece in the non-blocking position is controlled. The piece (201) is a steering lock device that allows the locking member (200) to move from the unlocking groove (216) to the locking groove (215). By providing a guide member (11i) for guiding the movement of the control piece (201) on the outer surface of the housing (11) and moving the locking member (200) to the non-locking position,
The engaging portion (200e) provided on the locking member (200) is made to project to the moving position of the contact portion (201c) of the control piece (201) in the non-blocking position, and the block position of the control piece (210). Lock device for preventing movement to the steering wheel. 2. A key detection lever rotatably arranged in the key cylinder (16) and a spring for pressing the key cylinder (16) in the housing (11) are provided, and the locking member (200) is The key detection lever has an end located outside the cam, and the key detection lever is rotated by a key inserted in the key cylinder (16), and the key cylinder (16) rotates with the elasticity of the spring as the key detection lever rotates. The lock member (200) is moved in the axial direction, and the end portion of the locking member (200) passes through the release portion formed in the locking groove and moves relatively into the locking groove to move from the unlocked position to the locked position. The steering lock device according to claim 1, wherein when the key is pulled out from the key cylinder (16), the end portion of the locking member (200) passes through the release portion and is separated from the locking groove.