JP2599664Y2 - Push-button cylinder lock - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push button type cylinder lock for driving a lock device provided in a trunk of an automobile or the like.

[0002]

2. Description of the Related Art Conventionally, a push button type cylinder lock is
For example, it is used for opening and closing a trunk of an automobile, and has a structure shown in FIG. That is, a through hole 1a is formed in the trunk outer wall 1, and a holder 2
Is attached. The holder 2 has a substantially cylindrical shape, one end of which is open, and a wall 2a which is the other end partially has an insertion hole 2 formed therein.
b is formed and the link 3 is rotatably attached. The holder 2 has one end edge which is formed in the through hole 1.
It is attached to the trunk outer wall 1 by being engaged with the edge of a.

[0003] A push button 4 is housed inside the holder 2. One end of the push button 4 is exposed to the outside, and a key hole 4a for inserting a key is formed in the center thereof. When the key is inserted into the key hole 4a, an internal tumbler (not shown) moves so that the push button 4 can be turned to either the lock position or the unlock position. Push button 4
Is provided with a push shaft 5 facing the link 3 at the unlock position.

Therefore, if a key is inserted into the push button 4 and pushed in a state where the key is turned to the unlock position, the push operation causes the push shaft 5 to move the link 3
Can be rotated to open the trunk.
If the push button 4 is rotated to the lock position, even if the push button 4 is pushed in, the push shaft 5 swings without contacting the link 3 and the trunk is maintained in the closed state. .

[0005]

However, in the push-button cylinder lock, even if the push-button 4 is turned to the lock position by a key operation, the push-button 4 is pushed by an abnormal impact in the event of an accident or theft. If this happens, the wall surface 2a of the holder 2 will be damaged, and the push button 4 will project from the holder 2 to the inside of the trunk, and the link 3 will rotate, causing a problem that the trunk is opened. The present invention has been made in view of the above problems, and has as its object to provide a push button cylinder lock in which a locked state is not released even if an abnormal load is applied to the push button.

[0006]

According to the present invention, a holder mounted on a member to be mounted and a holder slidably received in the holder and rotated to a locked position and an unlocked position by a key operation. A push button cylinder lock provided with a push button and a link attached to the holder and driving a locking device in response to a pushing operation at an unlock position of the push button.
A thin portion is formed at one edge of the holder so that the mounting strength of the holder on the member to be mounted is smaller than the wall strength of the holder for preventing the push button from being pushed.

[0007]

According to the above construction, when an abnormal impact acts on the push button at the lock position in the pushing direction, the thin portion formed at one edge of the holder is damaged, and the holder itself falls off from the attached member.

[0008]

Next, an embodiment of the present invention will be described with reference to the accompanying drawings. As shown in FIGS. 1 to 3, the push-button cylinder lock according to the present invention is characterized by a structure for mounting the holder 10 to a member to be mounted (trunk outer wall 11).

That is, the holder 10 has a substantially cylindrical shape having an opening in which a flange 12 is formed, and an insertion hole 13a is formed in the closing portion 13 on the opposite side. A step 12a is formed on the inner edge of the opening, and a retaining ring 14 is fitted therein. By forming the step portion 12a, a thin portion A (FIG.
When a load more than necessary is applied to the push button 16 described below, the thin portion A is damaged and the holder 10 and the holder 10 fall off from the trunk outer wall 11. That is, the thin portion A is
Is pressed so as to break before the closing portion 13 of the holder 10 breaks.

The holder 10 has an insertion hole 13.
A link (not shown) is rotatably provided in the vicinity of a as in the conventional example. The link is rotated by a push shaft 18 (described later) projecting from the insertion hole 13a to open the trunk.

The push button 1 is provided inside the holder 10.
6 are slidably accommodated. This push button 1
Numeral 6 has a cylinder 17 which rotates to a locked position and an unlocked position by inserting a key. A push shaft 18 is attached to the rear end of the push button 16. This push shaft 18 pushes the push button 16 in the unlocked position.
To rotate the link at one end thereof. Further, a flange-shaped spring receiving portion 18a is formed at the other end of the push shaft 18, and the push shaft 18
The push button 16 is urged in the projecting direction by a spring 20 disposed between the spring button 19 and a spring receiving plate 19 slidably mounted on the push button 16.

In the push-button type cylinder lock having the above-described structure, the key is inserted into the cylinder 17 and rotated to the unlock position. When the push-button 16 is pushed in, the push shaft 18 rotates the link to open the trunk. it can. In addition, if the cylinder 17 is rotated to the lock position, even if the push button 16 is pushed, the cylinder 17 swings without contacting the link, and the trunk maintains the locked state.

Here, when the cylinder 17 is rotated to the lock position, the push button 16
When an abnormal impact is applied to the thin portion A, the thin portion A is damaged before the push button 16 damages the closing portion 13 of the holder 10. As a result, the holder 10 falls off from the trunk outer wall 11, so that the link does not rotate and the trunk remains closed.

[0014]

As is clear from the above description, according to the push-button cylinder lock according to the present invention, even if the push-button is pushed by an abnormal impact due to theft or accident in the locked state, the link rotates. Since the thin portion is broken before moving to drive the locking device and the holder is dropped from the attached member together with the holder, the locked state is not released.

[Brief description of the drawings]

FIG. 1 is a sectional view of a push-button cylinder lock according to the present embodiment.

FIG. 2 is a front view of FIG.

FIG. 3 is a partially enlarged view of FIG. 1;

FIG. 4 is a cross-sectional view of a push-type cylinder lock according to a conventional example.

[Explanation of symbols]

10: holder, 11: trunk outer wall (attached member),
16: push button, A: thin part.

Claims (1)

(57) [Scope of request for utility model registration] 1. A holder attached to a member to be attached, a push button slidably received in the holder, and rotated to a lock position and an unlock position by a key operation, and a push button attached to the holder. In a push button type cylinder lock having a link that drives a locking device in response to a pushing operation at an unlock position, a holder at a member to be attached is smaller than a wall strength of the holder that prevents the pushing operation of the push button. 2. A push-button cylinder lock, wherein a thin portion is formed at one edge of the holder so that the mounting strength of the cylinder is reduced.