JPH03169989A - Door lock device for car - Google Patents

Abstract

PURPOSE:To prevent a car from a burglary by coupling a key rod connected to a key cylinder with an inner rod through a lock device and, at the same time, making it impossible to unlock by operation from the outside after locking is made by operation of a key. CONSTITUTION:A key rod 3 connected to a key cylinder 1 is coupled with an inner rod 4 connected to an inner lock knob 8 through a lock plate of the inside of a lock device 20. After a key is inserted into the key cylinder 1 to lock, it is impossible to unlock without using the key even if the lock knob 8 is operated through a half-opened window-glass, etc. According to the constitution, burglary of a car can be prevented.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an automobile door lock device.

(Prior Art) Conventionally, a door lock device for an automobile includes a base plate fixed to a door, a fork that engages with a striker provided on the vehicle body, and an open lever that releases the engagement between the fork and the striker. A link that can be moved to a locked position and an unlocked position and slides by operating the outer door handle or inner door handle, and a link that rotates by operating a key or inner lock knob to move the link to the locked and unlocked positions. It is equipped with a lock plate etc. that allows it to be moved (for example, Utility Model Application No. 64-463
(See Publication No. 65).

When the link is in the unlocked position, when the outer door handle or the inner door handle is operated, the open lever is rotated via the link to open the door. Furthermore, when the link is in the locked position, the oven lever will not rotate and the door will not open even if the handle is operated.

(Problem to be Solved by the Invention) However, in the automobile door lock device having the above-mentioned mechanism, even if the door is locked by key operation, a thin plate such as a measuring stick or a bar, etc. The door lock state can be released by inserting the door lock and operating the respective rondos or the respective plates.

Further, if the door is locked without completely closing the window glass, the door lock can also be unlocked by operating the inner lock knob with a wire or the like from outside the vehicle, and in either case there is a sufficient risk of theft.

The present invention has been made in view of the above-mentioned problems, and once the door is locked by key operation, the door lock cannot be released by operating each rod, plate, or inner lock knob. The purpose is to provide

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention provides a door opening device for an automobile, which is attached to a key cylinder l, and which can be moved to an unlock position, a lock position, and an overlock position by key operation. The key lever 2 is rotatable and has a rod guide groove 6, one end of which engages with the rod guide groove 6, the other end of which is connected to the lock plate 27 of the locking device main body 20, and is used for unlocking and locking. and a key rod 3 that rotates the lock plate 27 between the unlock position and the lock position, and when the key lever 2 rotates between the unlock position and the lock position, the key rod The rod guide groove 6 is formed so that when the key rod 3 moves between the unlocked position and the locked position and the key lever 2 is in the overlock position, the key rod 3 is prevented from moving and maintained in the locked position. .

(Function) Therefore, when the key lever 2 is rotated to the overlock position by key operation, the lock plate 27 of the lock device main body 20 becomes unrotatable. For this reason, key rod 3
The lock plate 27 is not rotated by the operation of the inner lock knob 8 (key rod 3) or the lock plate 27 itself, and release of the door ivy is prevented.

(Example) Next, an automobile door lock device according to the present invention will be described with reference to the accompanying drawings.

In Fig. 1, 1 is a key cylinder, 2 is a key lever,
3 is a key rod, 4 is an inner rod, and 20 is a locking device body.

The key cylinder 1 is fixed to the door lO, and as shown in FIG. 3, a tongue piece 1b having a long hole 5 is provided on the cylinder outer 1a and extends downward.

The key lever 2 is a plate-shaped member having a rod guide groove 6, and is rotatably attached to the end l of the cylinder inner 7 of the key cylinder l.

Then, by key operation, it can be rotated to the unlock position, mouth/sock position, and overlock position.

Said rod guide? II6 is a sliding groove 6 between points A and B.
A is shaped so that it always intersects diagonally with the elongated hole 5 of the key cylinder l. Further, the rotation groove 6b between points B and C is formed on an arc centered on the cylinder inner 7. Furthermore, the point C and the cylinder inner 7
A relief groove 6c with a very small length is formed on the straight line connecting the two.

One end of the key rod 3 is engaged with the overlapping portion of the long hole 5 of the key cylinder 1 and the rod guide groove 6 of the key lever 2, and the other end is engaged with the locking device main body 2 described below.
It is connected to one end of the lock plate 27 of No. 0.

The inner rod 4 has an inner lock knob 8 attached to one end, and the other end is connected to the other end of a lock grating 27 of a locking device main body 20, which will be described below. Move to.

As shown in FIG. 2, the locking device main body 20 generally includes an open operating rod 21, an open operating lever 23, a lock plate 27, a link 29, an open lever 35, and a base plate 40 to which these are attached.

One end of the open operation rod 2l is shaped like a plate and provided with a long hole 22, and the other end is connected to the outer handle 9. The open operation rod 2l can be moved downward in the figure by operating the outer handle 9.

The open operation lever 23 is attached to the base plate 40 so as to be rotatable about a support shaft 24, and is biased clockwise in the figure by a coil spring 25. A hole 26 is provided at one end, and the other end is connected to an inner handle (not shown), and when the inner handle is operated, the open operation lever 23 is moved counterclockwise in the figure against the biasing force of the coil spring 25. It is designed to rotate.

The lock plate 27 has a support shaft 28 attached to the base plate 40.
It is attached so that it can rotate around the center.

As described above, this lock plate 27 is connected to the key rod 3 at one end and to the inner rod 4 at the other end.

The link 29 is a plate-shaped member having a shoulder portion 30 approximately at the center, a hole 31 at one end, and a long hole 32 at the other end.

The hole 3l at one end of this link 29 includes the long hole 22 of the open operating rod 2l and the oven operating lever 2.
The holes 26 of No. 3 are overlapped and a shaft 33 is fitted into these, and the elongated hole 32 at the other end is fitted with the lock plate 27.
A shaft 34 provided at is fitted.

The link 29 slides vertically in FIG. 2 in conjunction with the open operation rod 2l or the open operation lever 23, and counterclockwise around the shaft 33 in conjunction with the lock plate 27. It is configured to rotate between a locked position in the clockwise direction and an unlocked position in the clockwise direction.

The open lever 35 is attached to a support shaft 36 on the pace plate 40.
A projecting piece 37 is provided on one end of the link 29 to face the shoulder 30 of the link 29 in the unlocked position, and a claw portion that engages with a fork (not shown) is provided on the other end. (not shown) protrudes from the back side of the base plate 40.

When the protrusion 37 of the open lever 35 is pushed by the shoulder 30 of the link 29 in the unlocked position, the open lever 35 rotates counterclockwise in the figure, and the claw portion As a result of the fork and striker being separated from each other, the fork and striker are disengaged and the door opens.

In the automobile door equipped with the above-described structural parts, when the locking device 20 is in the unlocked state, the key lever 2 is in the unlocked position rotated clockwise as shown in FIG. As shown in FIG. 2, the link 27 is rotated counterclockwise by the downward movement of the key rod 3, and the link 29 is in the unlocked position.

If you pull the outer handle 9 from this unlocked state,
Oven operating rod 21 moves downward in the figure and pushes link 29 down via shaft 33. At this time, since the link 29 is guided by the shaft 34 along the long hole 32, it moves in the direction of arrow S in the figure. and,
The shoulder portion 30 of the link 29 is connected to the protrusion 37 of the open lever 35.
As a result of pushing , the open lever 35 rotates counterclockwise as shown in the figure. As a result, the claw portion (not shown) of the open lever 35 is disengaged from the opening 7, and the door 10 is opened.

Further, when the inner door handle is pulled, the open operation lever 23 rotates counterclockwise in the figure.
In order to push down the link 29 via the shaft 33, the door lO opens as before.

Next, a case will be described in which the door is locked by key operation.

First, as shown in FIG. 4, when the key lever 2 is rotated to the lock position by operating the key cylinder 1, the key rod 3 is pulled up by the lower edge of the sliding groove 6a provided in the key lever 2, and the key lever 2 is pulled up by the lower edge of the sliding groove 6a provided in the key leper 2. Long hole 5 provided in cylinder l
It moves to the upper end of and is positioned at point B.

On the other hand, in the lock device main body 20,
As the key rod 3 moves, it rotates clockwise in FIG. 2, and the link 29 rotates about the shaft 33 in the direction of arrow T in the figure. Therefore, the shoulder 30 of the link 29 separates from the protrusion 37 of the open lever 35, and even if the outer handle 9 or the inner handle is operated, the shoulder 30 does not push the protrusion 37, so the door 10 remains in the locked state. do.

As mentioned above, when the key rod 3 is at point B of the rod guide groove 6, when the inner lock knob 8 is raised, the lock plate 27 is rotated counterclockwise in FIG. 2 via the inner rod 4. do. Therefore, the lock device main body 20 can be brought into the unlocked state, and the door 10 can be opened using the outer hand handle 9 or the inner handle as described above. By the rotation of the lock plate 27, the key rod 3 is pulled down, slides into contact with the lower edge of the sliding groove 6a of the key lever 2, descends through the elongated hole 5 of the key cylinder l, and moves the key lever 2. Return to the unlocked position shown in Figure 3.

Subsequently, as shown in FIG. 5, when the key cylinder 1 is further operated to rotate the key lever 2 to the overlock position, the key rod 3 is moved into the rotation groove 6b of the rod guide groove 6.
is moved and positioned at point C. In this state, can I escape? J6c and the long hole 5 overlap, and the key rod 3
can only move within a small range of the relief groove 6C.

Therefore, even if you try to raise the inner rod 4 by operating the inner lock knob 8 or insert a thin plate, wire, etc. between the window glass and the door 10 to operate the key rod 3 or the lock plate 27, the lock plate 27 will not work. The door lock state is maintained because the door only rotates slightly and does not rotate the link 29 to the unlocked position. That is, once the key lever 2 is rotated to the overlock position by key operation, the door opening cannot be released by any method other than key operation.

On the other hand, when the door is locked by operating the inner lock knob 8, when the inner lock knob 8 is pushed down, the inner rod 4 is lowered and the lock plate 27 of the locking device main body 20 is rotated clockwise in FIG. The door will be locked like this. At this time, the key rod 3 rises and pushes the upper edge of the sliding groove 6a of the key lever 2, rotating the key lever 2 to the lock position and standing at point B, but not at point C. Therefore, the door lock can be released by operating the inner lock knob 8 as described above.

(Effects of the Invention) As is clear from the above description, in the automobile door lock device according to the present invention, if the key lever is rotated to the overlock position by key operation, the lock plate of the lock device body can be rotated. It becomes impossible.

Therefore, even if the inner lock knob is operated by inserting a thin plate etc. between the door and the window glass to operate the rod or plate, or by some other means from the open window glass, it will not be possible to operate the inner lock knob from the outside without a key. The door cannot be opened and theft can be prevented.

[Brief explanation of the drawing]

Fig. 1 is a front view of a door to which the automobile door lock device according to the present invention is applied, Fig. 2 is a front view showing the unlocked state of the lock device main body, and Figs. 3, 4, and 5 are FIG. 3 is a diagram showing an unlock position, a lock position, and an overlock position of a key lever. l...Key cylinder, 2...Key lever, 3...
Key rod, 4... Inner rod, 6... Rod guide groove, 20... Lock device body, 27... Lock plate.

Claims (1)

[Claims] (1) A key lever that is attached to a key cylinder, can be rotated to unlock position, lock position, and overlock position by key operation, and has a rod guide groove; one end engages with the rod guide groove, and the other end A key rod is connected to the lock plate of the locking device body, moves between the unlock position and the lock position, and rotates the lock plate between the unlock position and the lock position. When the key lever is rotated between the two positions, the key rod moves between the unlocked position and the locked position, and when the key lever is in the overlocked position, the key rod is prevented from moving and maintained at the locked position. A door lock device for an automobile, characterized in that the rod guide groove is formed.