JPS628302Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of the cylinder inner of a steering lock device used in automobiles and the like.

A steering lock device is used to prevent theft of automobiles, etc., and is configured so that when the key is removed, the steering wheel is automatically locked and cannot be operated. For this purpose, a locking member that makes it impossible to rotate the steering shaft and a locking link that holds this locking member in an unlocked state when the key is inserted are provided, and the tip of the locking link is provided in the cylinder inner. The locking member is pressed against the upper surface of a block piece, and when the key is inserted, the block piece is pushed up, and the locking link is operated to hold the locking member in response to the insertion and removal of the key. This invention is already well known, and the present invention relates to a support structure for a cylinder inner block piece in this type of steering lock device.

The block piece has a key insertion groove and has a substantially U-shaped cross section whose lower surface slides against a step provided on the side surface of the key and is pushed up when the key is inserted. As shown, cylindrical protrusions 2 are provided on both sides of the block piece 1a on the key insertion slot side,
The block piece 1a is attached to the cylinder inner 3 by providing a support hole (not shown) in the cylinder inner 3 to rotatably support the protrusion 2.
When the key is not inserted, the block piece 1a is stored obliquely in the block piece storage recess 4a of the cylinder inner 3, and the tip of the lock link 6 is in contact with the upper surface 5. When the key 7 is inserted, the lower surface 8 is pushed up by the side step 9 of the key 7, the block piece 1a rotates around the protrusion 2, and the tip of the lock link 6 is pushed up accordingly. It is.
However, in the conventional example with such a configuration, the cylinder inner 3 has a circular cross section and the support hole cannot be formed in the upper part close to the outer periphery. Stepped portion 9
The distance L between the key 7 and the key 7 inevitably becomes smaller, and the lower surface 8 close to the protrusion 2 is pressed diagonally by the side step 9, which increases the insertion resistance of the key 7 and makes it impossible to insert the key smoothly. Further, there was a problem that a large force is easily applied to the protrusion 2, which may cause the protrusion 2 to be damaged.

The present invention was made with the aim of solving these conventional problems, and a locking step is formed on the key insertion opening side of the block piece storage recess provided in the cylinder inner to prevent the block piece from being inserted. By storing and placing the block piece and engaging the upper end of the stopper plate, which is vertically slidably inserted into the cylinder inner, with the recess provided on the side surface of the block piece,
To provide a steering lock device in which the block piece is supported in a state with a large degree of freedom in which it can swing fairly freely, so that the key can be inserted smoothly without straining when inserting the key, and the block piece is not damaged. It provides cylinder inners.

Hereinafter, embodiments of the present invention will be described based on the drawings. FIG. 1 is a partially cutaway side view of a key switch portion of a steering lock device embodying the present invention. 11 is a body having a rotary switch portion 12, and a cylinder inner 3 is housed therein. 13 is the body 11 along with the cylinder inner 3
It is a cam housed in the cylinder inner 3, which engages with the cylinder inner 3 by appropriate means, rotates together with the cylinder inner 3 by inserting a key (not shown) from the key insertion opening 14 and rotating it, and rotates with the cylinder inner 3. The rotary switch in the switch section 12 is rotated.
On the other hand, the lock link 6 is connected to the body 1 by the pin 16.
1 and is biased clockwise in the figure by a spring 17, with the tip 18 pressing against the outer circumference of the cylinder inner 3. The other end 19 moves in a direction perpendicular to the plane of the paper in response to the rotation of the cam 13, and is in contact with the upper surface of a locking member 20 that locks the steering shaft (not shown) at the lock position. When the key is inserted, the locking member 20 is engaged with the stepped portion 21 of the locking member 20 to hold the locking member 20 in an unlocked state. 22 is a lid plate, 23 is a cap, and 24 is a stopper plate.

Details of the cylinder inner 3 are shown in FIG. 2 and FIGS. 3a and 3b. The cylinder inner 3 is provided with a plurality of actuating plates 26 for locking, a connecting protrusion 27 for engaging with the cam 13, and a key insertion slot 1.
A block piece accommodating recess 4 is provided in the upper part of the 4 side, and the block piece 1 is housed in this. A locking step 29 is formed in the block piece storage recess 4 at a position higher than the bottom 28 on the key insertion slot 14 side, and the end of the block piece 1 is locked in this locking step 29 when the key is not inserted. The upper surface 5 is pressed by the tip 18 of the lock link 6 and is in an inclined state. Further, a recess 30 is provided on the side surface of the block piece 1, and an upper end 31 of the substantially U-shaped stopper plate 24 is inserted into the cylinder inner 3 so as to be slidable in the vertical direction.
is engaged with the recess 30.

Here, when the key 7 is inserted, the lower surface 8 is pushed up by the side step 9 provided on the side surface of the key 7.
As shown in FIGS. 3a and 3b, the lower surface 8 slides against the side step 9, so that the block piece 1 becomes horizontal, and the upper surface 5 becomes substantially flush with the outer peripheral surface of the cylinder inner 3. As a result, the tip 18 of the locking link 6 is pushed up and rotated, and the end 19 locks onto the stepped portion 20 of the locking member 20.
When the lock is engaged with the lock, it becomes unlocked. The key 7 has a point-symmetrical cross-sectional shape as shown in FIG.
4, the head 34 of the stopper plate 24 is held in a state protruding from the outer peripheral surface of the cylinder inner 3, and prevents the cylinder inner 3 from moving in the axial direction. That is, when the key is not inserted, by pressing the block piece 1 with the tip 18 of the lock link 6, the block piece 1 is prevented from popping out upward, and the stopper plate 24
The head 34 of the key is projected downward, and when inserting the key,
Push the block piece 1 upward and the stopper plate 24 downward using the side step 9 of the key 7, and rotate the cylinder inner 3 while keeping the block piece 1 flush with the outer peripheral surface of the cylinder inner 3. The head 3 of the stopper plate 24
4 is kept prominent. Note that the key insertion groove 35 of the block piece 1 and the stopper plate 24
The depth and width of each of the key insertion grooves 36 are selected so that insertion and removal of the key 7 is not hindered.

Figure 4 shows block piece 1 and block piece storage recess 4.
In order to allow the block piece 1 to move freely by inserting the key 7, the diagonal length a of the block piece 1, the total length b of the block piece storage recess 4, and the locking The length c of the stepped portion 29, the total length d of the block piece 1, and the tip 18 of the lock link 6 from the key insertion slot side of the block piece storage recess 4.
The length e up to the point where is in contact with the upper surface 5 of the block piece 1
are selected as a<b d>e e>c, respectively. Also, the recess 30 of the block piece 1 is connected to the upper end 31 of the stopper plate 24.
The dimensions of the stopper plate 24 are selected to be large so that the block piece 1 can swing relative to the stopper plate 24 with some margin.

As is clear from the above description of the embodiment, the present invention has a locking step formed on the key insertion opening side of the block piece storage recess provided in the cylinder inner to store and place the block piece, and to The upper end of the stopper plate, which is slidably inserted in the inner part in the vertical direction, engages with the recess provided on the side of the block piece, so the block piece has a large degree of freedom in which it can swing quite freely. It is automatically tilted and supported, allowing the key to be inserted smoothly and effortlessly. Therefore, as in the case where the block piece is supported by a hinge formed by a combination of the protrusion of the block piece and the support hole of the cylinder inner, smooth key insertion is possible due to the increased insertion resistance when inserting the key. There is no possibility that the protrusion will be damaged due to the excessive force being applied to the hinge. Furthermore, according to the present invention, there is no need to form a protrusion on the block piece, so the block piece can be manufactured easily, and the head of the stopper plate is pressed by the block piece or the key and always remains in a protruding state. Since there is no need for a holding spring or the like, it is easy to reduce the overall cost.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of an embodiment of the present invention.
Figure 2 is a partially cutaway side view of the main parts of the same as above, Figure 3a
and b are a partially broken side view and a partially broken front view of the same key inserted, FIG. 4 is a partially broken enlarged side view of the main part of the same as above, and FIG. 5 is a partially broken main part of the conventional example. It is an enlarged side view. 1 is a block piece, 3 is a cylinder inner, 4 is a block piece storage recess, 5 is an upper surface, 6 is a lock link, 7 is a key, 8 is a lower surface, 9 is a side step, 14 is a key insertion slot, 18 is a tip, 20 is a locking member;
24 is a stopper plate, 29 is a locking step, 30
31 is a recessed portion, 31 is an upper end, and 35 is a key insertion groove.

Claims (1)

[Scope of utility model registration request] A block piece with a U-shaped cross section, which has a key insertion groove and is pushed up by sliding its lower surface against the side step of the key when the key is inserted, is provided in the cylinder inner to unlock and hold the locking member that makes rotation of the steering shaft impossible. In the cylinder inner of the steering lock device, the lock link is operated in response to insertion and removal of a key by pressing the tip of the lock link against the upper surface of the block piece,
A locking step is formed on the key insertion port side of the block piece storage recess provided in the cylinder inner to accommodate and place the block piece. The cylinder inner of the steering lock device whose upper end is engaged with a recess provided in the side surface of the block piece.