JPS5918933Y2 - steering lock device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a steering lock device that prevents theft by engaging a lock shaft protruding from a steering lock body with a steering shaft to prevent rotation of the steering shaft. This invention relates to a steering lock device that has a common structure for holding the locked state and a structure for preventing the cylinder lock from being removed.

Conventionally, the cylinder lock was rotated by key operation,
By controlling the slider connected to the lock shaft with a cam linked to this cylinder lock, the lock shaft is moved forward and backward from the steering lock body to the retaining groove provided on the steering shaft, making rotation of the steering shaft impossible. It is designed to have a locked state and an unlocked state that does not impede rotation, while at the same time, it is a swinging type that engages and holds the slider of the lock shaft in the retracted position against the biasing force of the spring in the unlocked position. A lock link is provided, and when the key is removed from the locked position of the cylinder lock, the slider is released and the lock shaft is returned to the locked state, and the lock link is engaged by sensing the insertion of the key. 2. Description of the Related Art A steering lock device is known in which a responsive member is provided on a lock link to enable the lock link to be engaged.

By the way, with this type of conventional steering lock device,
Insert the cylinder lock into the inner cylinder of the cylinder outer so that the engagement between the lock plate and the lock groove of the cylinder lock is released by inserting the key, and the cylinder lock can be rotated freely. The cylinder lock is prevented from being removed by fitting an E-ring or by providing a retaining plate biased by a spring and engaging the stepped portion of the inner cylinder.

A lock link is attached to the cylinder outer in its axial direction, and a structure is adopted in which a response member that responds to the insertion and removal of a key is arranged at the front of the cylinder lock so that it can engage with one end of the lock link. It had been.

Therefore, in the conventional steering lock device, the cylinder lock removal prevention member and the response member provided for the lock link are separate members and are arranged separately at the rear and front parts of the cylinder lock. This method has disadvantages such as not only an increase in the number of points but also a complicated structure.

The present invention was devised in view of such conventional problems, and is a responsive mechanism that can be engaged by inserting a key into a locking link that holds a locking member that locks and unlocks a steering shaft in an unlocked position. A steering wheel that uses a member as a member to prevent the cylinder lock from being removed, thereby simultaneously forming a structure in the front part of the cylinder lock that prevents the cylinder lock from being removed and a structure that allows the lock link to swing when a key is inserted. The purpose is to provide a locking device.

Therefore, in the present invention, a through hole is provided in the front part of the cylinder lock perpendicular to the key insertion hole, and a sliding plate is provided that slides within the through hole in response to insertion and removal of the key. The responsive member is configured so that one end of the sliding plate can be secured to the lock link, while the other end of the sliding plate is always engaged with a fixing member that supports the cylinder lock. Its basic feature is that it functions as a pull-out prevention member.

Hereinafter, the present invention will be described in more detail based on illustrated embodiments.

As shown in FIG. 1, the steering lock device according to the present invention consists of a metal block integrally formed with a main body portion 1 and a semicircular portion 2, and a lock body 3 forming a housing of the steering lock device. , a cam member 4 as a lock control means is integrally formed in the axial direction from the rear end side,
A cylinder lock 5 having a well-known structure is inserted into the main body 1 from the back side S on the left side of the figure, and an opening hole 6 with a rectangular cross section opened in the center of the semicircular portion 2 of the lock body 3. It consists of a slider 8 that engages with the lock shaft 7 as a locking member that fits freely in and out, and a return spring 9 that constantly biases the lock shaft 7 in the locking direction via the slider 8. A drive device 10 that moves a lock shaft 7 into and out of a locked position and an unlocked position according to the rotation of a cam member 4 that fits together.
, a lid 11 which is caulked and fixed as the only fixed member in the main body 1 of the lock body 3 and forms a guide wall of the slider 8, and a well-known rotating mechanism operated by the tip of the cam member 4 inside the cap-shaped case. An ignition switch 12 incorporating a multi-contact structure and a lock link 1
3, a sliding plate 14 as a response member, and a return spring 15, and is arranged on the front side of the main body 1 of the lock body 3 to prevent the lock shaft 7 from accidentally locking when the key 16 is inserted. and unlock holding means 17 for holding the lock in the unlocked state.

In FIG. 1, reference numeral 18 is a pair of bolts 19 and 19 that are used to fix a steering shaft (not shown) to be locked and unlocked to the semicircular portion 2 of the lock body 3 and to rotate the shaft between the two. A supporting member 20 is a cylinder cap that is caulked and fixed to the front end of the cylinder lock 5, and 21 and 22 are built into the cylinder lock 5, and a key 16 is attached to the support member.
A lock plate and its return spring 23 make the cylinder lock 5 unrotatable when the cylinder lock 5 is removed, and allow the cylinder lock 5 to rotate when the key 16 is inserted into the cylinder lock 5. This is a cap that is fitted and fixed in a mounting groove 24 on the outer periphery of the front end to cover the front surface of the front end.

As shown in FIG. 2, the main body part 1 of the lock body '''f-3 has a cylinder lock 5 rotatably fitted in the front half thereof, and also corresponds to the locked position of the cylinder lock 5. It has a shaft hole 26 in which a lock groove (not shown) into which the upper end of the lock plate 21 enters is provided along the axial direction, and a drive device 10 for the lock shaft 7 is installed in the intermediate portion where the lock shaft 7 is installed. A mounting space 27 having a rectangular cross section (see FIG. 3) is formed in which the slider 8 and return spring 9 to be formed can be mounted from the rear direction S.

Further, on the back side of the mounting space 27, the drive device 10
After assembling, the lid 11 is inserted and caulked and fixed to the inner wall to create a partition, and a cylindrical portion 28 for mounting the ignition switch 12 is formed on the rear side of the lid 11. After fitting the ignition switch 12 into the cylindrical portion 28, the terminal base 29 of the ignition switch 12 is fixed to the rear end surface of the lock body 3 with bolts 30.

In this case, the engagement protrusion 31 provided on the free end of the cam member 4 passes through the central opening 11a of the lid 11 and fits into the engagement groove 32a of the rotor 32 of the ignition switch 12, and The rotor 32 is rotated in accordance with the rotation.

Further, a small circular portion 33 provided following the engaging protrusion 31 is journalled in the central opening 11 a of the lid 11 .

As shown in FIGS. 1 and 3, the slider 8 of the drive device 10 for the lock shaft 7 is mounted in the mounting space 27.
The both side walls 8b and sc raised from the bottom wall 8a are connected to the top wall 8d.
A locking groove 36 is cut into the upper wall 8d from the front edge of the upper wall 8d toward the back surface, into which the engaging groove 35 of the engaging portion 34 protruding from the lower end of the lock shaft 7 is fitted. Established in
The engagement between the locking groove 36 and the engagement groove 35 causes the lock shaft 7 to move in either the up or down direction.

Further, the bottom wall 8a of the slider 8 is appropriately protruded to both sides to form left and right engaging protrusions 37a and 37b.
These engaging protrusions 37a and 37b form a contact surface with a cam portion 38 formed at the rear end of the cylinder lock 5 of the cam member 4, and the cam portion 38 is rotated counterclockwise in FIG. When the slider 8 is lowered and the lock shaft 7
When the cam part 38 is in the state shown in the figure, the spring force of the return spring 9 whose upper end is received by the spring receiver 39 provided on the bottom wall 8a moves the lock shaft 7 to the locked position as shown in the figure. Hold.

On the other hand, both side walls 8b and 8C of the slider 8, into which the shaft portion 40 having a semicircular cross section of the cam member 4 is inserted, are moved in the vertical direction by guide surfaces 27a and 27b defining the upper part of the mounting space 27. An engagement groove 41 is provided on the upper side of the outer surface of one of the side walls, for example 8C, in which the lock link 13 for locking the lock shaft 7 in the unlocked position engages, and the key 16 is inserted into the engagement groove 41. Cylinder lock 5
When is operated, the next unlock holding means 1
7 holds the lock shaft 7 in the unlocked position.

As shown in FIGS. 1 and 4, the lock link 13 is formed with a support shaft 45 on the side surface of the approximately middle portion thereof, which protrudes in a direction perpendicular to the link plate surface. It is formed as bent ends 46 and 47 that are bent almost at right angles to the direction, and the front side bent end 46 has a sliding hole as a through hole extending vertically in the front part of the cylinder lock 5. It is located above the upper end of the sliding plate 14 which is slidably inserted into the groove 48 from above.

In addition, the bent end 47 on the back side is as shown in FIG.
The side wall 8C of the slider 8 is protruded in a direction perpendicular to the side wall 8C provided with the engagement groove 41, and when the slider 8 is lowered, the bent end 47 locks the retention groove 41 of the slider 8 to release the slider 8. It allows it to be held in a locked state.

The lock link 13 is attached from the front side of the lock body 3.

For this reason, as shown in FIGS. 5 and 6, a slit-shaped cross-section defining a sliding space for the lock link 13 is provided at the center of the upper front side of the lock body 3 inwardly along the axial direction. A lock link groove 50 is formed, and a guide groove 52 for guiding the support shaft 45 of the lock link 13 during installation is provided on the side surface 51 of the groove 50, corresponding to the front half of the lock link 13.

The lower surface of this guide groove 52 is formed as a guide surface 52 a that gradually becomes higher toward the rear in the axial direction. The support shaft 45 of the lock link 13 is guided so that the lock link 13 can be installed easily and smoothly.

The inner end of the guide groove 52 in the axial direction intersects with a slit-shaped vertical hole 53 inserted into the main body 1 of the lock body 3 radially inward from the outer surface thereof. It has a bottom part 53a that is further depressed from the inside of the guide surface 52a, and the support shaft 45 of the lock link 13 that has been guided by the guide surface 52a when inserting the lock link 13 is placed on this bottom part 53a. I feel depressed.

The bottom portion 53a of the vertical hole 53 is set to an appropriate depth to allow the necessary movement of the lock link 13. In other words, the bottom portion 53a of the vertical hole 53 is set to an appropriate depth to allow the necessary movement of the lock link 13. A shaft support or a shaft fitting portion for the support shaft 45 is formed by setting the depth so that the support shaft 45 does not come off from the bottom portion 53a.

Further, a circular hole 54 for inserting a spring is previously opened in a portion corresponding to the intermediate portion of the front half of the lock link 13 from the outer surface of the lock body main body portion 1, and the return spring 15 is inserted into this circular hole 54. is inserted from the outside, and the spring receiver provided on the upper edge 13a of the lock link 13 is engaged with the fourth part 13b, and the front bent end 46 of the lock link 13 is always slid by the spring force of the not-turn spring 15. The lock link 13 is urged in the direction of contacting the plate 14.

The fitted return spring 15 is held by a pair of spring retainers 23 a formed on the cap 23 when the cap 23 is attached to the front surface of the lock body main body portion 1 .

Sliding plate 1 that controls the operation of this lock link 13
4, as shown in FIGS. 4 and 7, has a key hole 14a in the center that allows insertion of the key 16, and a key hole 14a in the upper part of the key hole 14a along the extending direction of the key 16. (In this embodiment, parallel dashed lines 16a are formed on both sides of the key 16.)

) has a basic shape in which an engaging tongue piece 14 b that engages with the key 14 is provided facing inward to sense and respond to the insertion and removal of the key 16, and as shown in FIG. 8, the sliding plate 14 When the lower end portion 14C is inserted into the sliding groove 48 from above,
It protrudes downward from the cylinder lock 5, and the lower end 14C forms a stop for the cylinder lock 5 to be removed.

Note that the sliding plate 14 is inserted into the lock link groove 5.
This is done by a plate insertion groove 55 formed radially inward and having a width equal to the width of the sliding plate 14, continuing from the front part of the sliding plate 14.

As shown by the solid line in FIG. 8, when the key 16 is inserted,
As a result of the locking tongue piece 14b being pushed up by the parallel dashed line 16a of the key 16, the sliding plate 14 rises and the lock link 13 is urged by the return spring 15.
The front bent end 46 of the cylinder lock 5 is lifted up to the outer peripheral surface of the cylinder lock 5, and when the cylinder lock 5 rotates, the lock link 13 is moved by the arcuate upper edge 14d of the sliding plate 14, which is formed to have the same curvature as the outer peripheral surface of the cylinder lock 5. hold at the same height.

The lower end 14C of the sliding plate 14 protrudes a certain amount from the cylinder lock 5 and slides on an arcuate abutment surface 56 recessed in the axial direction on the front surface of the lock body 1, while rotating the cylinder lock 5. linked to the movement.

On the other hand, when the key 16 is removed from the lock position of the cylinder lock 5, the sliding plate 14 is pushed downward by the lock link 13 biased by the return spring 15, as shown by the dotted line in FIG. The contact surface 14e formed on the side of the moving plate 14 comes into contact with the stopper step 48a formed in the sliding groove 48! At this time, the lower end 14C of the sliding plate 14 falls into a locking groove 57 formed continuously on the abutment surface 56 to lock the rotation of the cylinder lock 5.

As is clear from the above, the sliding plate 14
The lower end 14C of the cylinder lock 5 contacts the contact surface 56 in the axial direction regardless of whether the key 16 is inserted or removed.
A pull-out stop is formed to prevent the slider from being pulled out in the axial rear side.

On the other hand, the cylinder lock 5 is prevented from being removed toward the front side in the axial direction.
As is clear from FIG. 2, the shaft hole 26 in the lock body 3
This is achieved by receiving the cam portion 38 of the cam member 4 integrally formed with the cylinder lock 5 from the front side in the axial direction by the step portions 5B and 59 provided on the outer circumferential side of the inner end of the cylinder lock.

As a result, the cylinder lock 5 is prevented from being removed in any direction in the axial direction.

The cap 23 attached to the front of the lock body body 1 covers the inside from the outside together with the cylinder cap 20, and the position of the key 16 is displayed on the front of the cap 23 as shown in FIG. ° “LOCK”,
Necessary characters such as "ACC", "ON", "5TART", etc. are stamped and displayed at each corresponding position.

Next, the assembly structure of the above-mentioned steering lock device will be explained with reference mainly to FIG.

■ After fitting and fixing the cylinder cap 20 to the front surface of the cylinder lock 5, set the return spring 22 and lock plate 21 (total of 7 sets in the example shown) to the cylinder lock 5, and then move it as indicated by the arrow S. Insert the lock body into the main body part 1 from the rear direction shown by and press the cylinder lock 5.
a stepped portion 58 which is fitted into the shaft hole 26 and has a cam portion 38 integrally formed with the cylinder lock 5 formed at the inner end of the shaft hole 26;
59 (see Figure 2).

■ Next, insert the lock shaft 7 into the opening hole 6 of the semicircular part 2.
The retaining part 34 is fitted downward from the top, and as shown in FIG. The constructed drive device 10 is inserted and set into the mounting space 27 from the rear direction S, similarly to the cylinder lock 5.

The drive device 10 is inserted with the shaft portion 40 of the cam member 4 inserted between the side walls 8b and 8C of the slider 8. At the end of the insertion, the locking groove 36 of the slider 8 is inserted into the lock shaft 7. Fit into the retaining groove 35 of.

Further, the return spring 9 of the slider Δ inserted together with the slider 8 has its upper end fitted into the spring receiver 39 of the slider 8, and its lower end is attached to the lock body main body 1 as shown in FIGS. 2 and 3. The guide groove 60 having a rectangular cross section is provided in the bottom wall in the axial direction from the back side.

■ After installing the drive device 10, insert the lid 11.

When inserting the lid 11, insert the lid 11 into the guide groove 60.
This is done with the fitting piece 11b bent and formed on the lower end edge of the lid 11 being fitted, and when the knot 11 is inserted to a predetermined position, the lid 11 is caulked and fixed to the inner wall surface of the cylindrical part 28.

■ After fixing the lid 11, turn the ignition switch 1
Fit the case part 2 into the cylindrical part 28 from the back side,
The engagement groove 32a of the rotor 32 is connected to the engagement protrusion 3 of the cam member 4.
1, the terminal base 29 is fixed to the back side end surface of the lock body body part 1 with bolts 30.

This completes the assembly from the back side.

■ After assembly from the back side, next, set the sliding plate 14, the lock link 13, and the return spring 15 on the front side of the lock body main body 1 in this order. Complete the assembly.

In this case, the sliding plate 14 is the lock body body part 1
The cylinder lock 5 is inserted into the sliding groove 48 of the cylinder lock 5 through the plate insertion groove 55 provided in the radial direction at the front end of the sliding plate 14 and the insertion groove 55a of the engaging tongue 14b of the sliding plate 14.

Next, the lock link 13 is inserted into the lock link groove 50 from the front.

During this insertion, the support shaft 45 of the lock link 13 is smoothly guided by the guide surface 52a of the guide groove 52,
The insertion of the lock link 13 is completed after confirming that the support shaft 45 has reached the vertical hole 53 and has fallen into the bottom 53a thereof.

For the inserted lock link 13, insert the return spring 15 through the circular hole 54, and finally remove the cap 23.
is fitted and fixed to the front end of the main body part 1 of the lock body.

At this time, the return spring 15 is held by the spring retainer 23a of the cap 23 so that it does not fly out.

When the assembly is completed as described above, the cylinder lock 5 is held at the LOCK position, and therefore the lock shaft 7 projects with the steering shaft locked.

When the key 16 is inserted in this LOCK position, the parallel dashed line 16
a, the sliding plate 14 is pushed up via the engaging tongue piece 14b to the state shown by the solid line in FIG.

By inserting this key 16, the lock link 13 is
It is held against the spring force of the return spring 15 at the detached position shown by the two-dot chain line in the figure and at the engagement standby position shown by the solid line in the figure.

In this engagement standby position opening, the rear bent end 47 of the lock link 13 is abutted by the side wall 8C of the slider 8 that still holds the lock shaft 7 in the lock position, and therefore the support shaft 45 of the lock link 13 is held in a slightly floating state at the bottom 53a of the vertical hole 53.

Next, in order to start the engine, when the key 16 is turned to rotate the cylinder lock 5 toward the 5TART position, the cam portion 3 of the cam member 4 integrally formed with the cylinder lock 5
8 pushes down the engagement convex portion 37a of the slider 8 against the spring force of the return spring 9 by its rotation, and the ACC
While the slider 8 unlocks the lock shaft 7 in the vicinity of the position, the slider 8 itself is lowered to the side wall 8C.
The engagement groove 41 of the lock 9 moves down to the 13 position of the lock 9, and the rear bent end 47 of the lock link 13, which is urged by the spring force of the return spring 15, falls into the engagement groove 41. Keep unlocked.

The locked state of the slider 8 in the unlocked position by the lock link 13 is shown by the locked position C shown by a dotted line in FIG. 4 for the lock link 13.

When the cylinder lock 5 is set to the 5TART position, 1. Engagement protrusion 3 of the cam member integrally formed with the cylinder lock 5
1 rotates the rotor 32 of the ignition switch 12 to set the ignition switch 12 to the 5TART state and start the engine.

When the engine completely explodes, the cylinder lock 5 is turned off by a well-known automatic return means, although this was not explained in detail.
The engine is dynamically returned to the N position, and the engine starts warming up.

In the above embodiment, a steering lock device in which the cylinder lock 5 is assembled from the rear side has been described, but the cylinder lock removal prevention structure according to the present invention is a steering lock device in which the cylinder lock is assembled from the front side. It goes without saying that the scales can be applied to scales, and in that case, the sliding plate as a response member may be irremovably engaged in the axial direction with the cylinder outer, cylinder cap, or lock body. A switch is provided that is turned on and off by the sliding plate as the response member, and when the driver attempts to exit the vehicle with the key in the on state when the key is inserted, an alarm circuit is activated by turning on the door switch connected in series with the switch. It is also possible to make it conductive and use a buzzer or the like to warn you if you forget to remove the key.

As is clear from the above explanation, the present invention is directed to a steering lock device that engages a locking member protruding from a lock body with a steering shaft to prevent rotation of the steering shaft. A sliding plate is provided to be slidably inserted into a through hole of a cylinder lock portion drilled in the cylinder lock, and when a key is inserted, one end of the sliding plate holds the lock link so that it can be displaced in the engagement direction, This invention provides a steering lock device characterized in that the other end of the sliding plate is axially irremovably superimposed on a fixing member that always supports a cylinder lock.

According to the steering lock device according to the present invention, the sliding plate, which is a response member that can be engaged with the lock link in response to insertion and removal of the key, also serves as a member to prevent the cylinder lock from being removed, so that special removal is impossible. It is possible to eliminate the need for a stopper member, simplify the structure of the cylinder support part, and assemble the cylinder lock by simply inserting the sliding plate into the through hole provided in the cylinder lock part. It is also possible to improve workability.

In addition, according to the structure of the present invention, it is possible to incorporate a removal prevention structure into the cylinder lock part, which not only improves the cylinder support part, but also eliminates the cylinder outer.
There are advantages such as the ability to integrate the cam and cylinder lock and increase the degree of freedom in selecting the assembly structure, which can contribute to structural improvement of the entire steering lock device.

[Brief explanation of the drawing]

1 is an exploded schematic perspective view of a steering lock device according to an embodiment of the present invention, FIG. 2 is a horizontal sectional view showing the assembled state of the steering lock device shown in FIG. 1, and FIG. FIG. 4 is a sectional view of the steering lock device shown in FIG. 1 in the direction perpendicular to the cross section of FIG. 2, and FIGS. FIG. 7 is a vertical sectional view of a sliding plate as a pull-out prevention member according to the present invention, and FIG. - An enlarged sectional view in the X-ray direction, and FIG. 9 is a front view of the cap shown in FIG. 1. 3... helmet lock body-14... cam member,
5... Cylinder lock, 7... Lock shaft, 10... Drive device, 13...
Lock link, 14...Sliding plate, 16.
...Key, 48...Sliding groove, 55...
...Plate insertion groove.

Claims (1)

[Scope of utility model registration request] In a steering lock device that disables rotation of the steering shaft by engaging a locking member protruding from a lock body with the steering shaft, the locking member is inserted into a through hole of a cylinder lock part that projects perpendicularly to a key insertion hole. , a sliding plate is provided that senses insertion and removal of the key and responds, one end of the sliding plate abuts a lock link, and the lock link locks the locking member to allow rotation of the steering shaft. restricting the swinging of the lock link so as to hold the locking member in position, and causing the other end of the sliding plate to extend through the cylinder lock at all times;
A steering lock device characterized in that a lock body has a contact surface with which the other end of the sliding plate abuts in the axial direction at least within a rotational range of the cylinder lock, so that the cylinder lock cannot be removed from the lock body.