JPH11117590A - Locking device for open-close body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely prevent the generation of an abnormal sound due to the transfer of a locked state by vibrations, etc., in an open-close body, an interference in another member, etc. SOLUTION: In the locking device 10 for the open-close body, a latch 12 having an approximately U-shaped locking groove 25 and being urged in the opening direction and a claw lever 13 being engaged with the latch and holding a closed state, in which the locking groove 25 of the latch is crossed at approximately right angles with a guide groove 17, are mounted rotatably on a base 11, to which the guide groove 17, in which a striker 16 set up to either one of a base body or the open-close body rotatably fitted to the base body while being urged in the opening direction is housed in a manner that the striker 16 can be forwarded or retreated, is formed, and the locking device 10 is installed to the other of either of the base body or the open-close body. A recessed section 30 is formed at an edge section on the opening direction X1 side in the locking groove 25 of the latch so that a deepest section is placed at the center L of the guide groove 17 under the closed state of the latch at that time, and the striker 16 fitted to the open-close body or the base body is engaged and positioned to the recessed section 30 of the latch.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device for an opening / closing body such as a hood and a trunk of an automobile.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, a locking device for an opening / closing body such as a hood or a trunk of an automobile has a base 1 having a guide groove 1a fixed to a base and rotatable with the base. A striker 2 having a concave shape having a circular cross section is provided on an opening / closing body fixed to the opening. When the opening / closing body is closed, the striker 2 enters the guide groove 1a, and the opening / closing body is fully closed by the substantially U-shaped lock groove 3a of the latch 3 rotatably attached to the base 1. The claw lever 4 holds the locked state. The illustrated locking device is for a hood of an automobile, and is different from a locking mechanism including the guide groove 1a and the latch 3 in that a hook lever 5 is provided as a second locking mechanism. Different from lock device.

[0003]

However, in the locking device for the opening / closing member, the striker 2 moves in the horizontal direction due to vibrations during running or the like, and the locking groove 3a of the latch 3 is provided.
There is a problem that abnormal noise is generated due to rubbing with the edge of the above-mentioned or interference with the guide groove 1a. The latch 3 is also provided with the striker 2 in a locked state, as shown by a dashed line in the figure, in which the edge contacting the striker 2 is inclined. Unusual noise may occur due to contact with one edge of the guide groove 1a. In view of the above, an object of the present invention is to reliably prevent the opening / closing body from interfering with other members due to vibration or the like in the locked state, thereby generating abnormal noise.

[0004]

According to the present invention, there is provided a locking device for an opening / closing body according to the present invention, comprising: a base; or an opening / closing body rotatably mounted on the base and urged in an opening direction. A base provided with a guide groove for accommodating the striker provided on one side is provided with a substantially U-shaped lock groove and a latch urged in the opening direction, and the lock groove of the latch engaged with the latch is A claw lever that holds a closed state that is substantially orthogonal to the guide groove is rotatably mounted, and in the opening / closing body locking device provided on either the base or the opening / closing body, the opening direction side in the locking groove of the latch is provided. In the edge portion, a concave portion is provided so that the deepest portion is located at the center of the guide groove when the latch is closed,
The striker provided on the opening / closing body or the base is engaged with the concave portion of the latch and positioned by the urging of the opening / closing body in the opening direction.

In the locking device for the opening / closing body, in the closed state where the lock groove of the latch is substantially perpendicular to the guide groove, the concave portion is formed at the edge of the lock groove on the opening direction side such that the deepest portion is located at the center of the guide groove. In the closed state of the opening / closing body urged in the opening direction, the striker provided on the opening / closing body or the base is urged into the concave portion to be positioned. Therefore, even if vibrations or the like are applied in the closed state, the striker can be prevented from easily rubbing against the lock groove of the latch, and the striker moves and comes into contact with the edge of the guide groove of the base. Generation of sound can be reliably prevented.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an opening / closing body locking device 10 according to the present invention. This locking device 10 is generally
1, latch 12, claw lever 13 and position regulating plate 1
For example, it is applied as a lock mechanism for a hood or a trunk which is an opening / closing body of an automobile.
When the present invention is applied to a bonnet, the bonnet is provided with a concave striker 16 having a circular cross section, and is attached by a well-known attachment structure as a second lock mechanism as shown by a broken line in FIG. The lock device 10 having the hook lever 15 is attached to a vehicle body as a base. On the other hand, when applied to a trunk, the lock device 10 is attached to the trunk, and the concave striker 16 is provided on the base.

At the upper end of the base 11, a guide groove 17 having an upper end opening for accommodating the striker 16 so as to be able to move forward and backward is provided. The base 11 has the latch 1
Support shafts 18, 19 for rotatably mounting the claw lever 13 and the claw lever 13 are provided in a protruding manner. In the figure, reference numeral 20 denotes a rib for reinforcement, and 21 denotes a hole for fixing to a base or an opening / closing body.

As shown in FIG. 2, the latch 12 is a plate member provided with a shaft hole 24 for being rotatably mounted on the support shaft 18 of the base 11, and locks the striker 16. U-shaped lock groove 25 for
And an engagement receiving portion 26 that engages with the claw lever 13
And a connecting portion 27 connected to the urging spring 28.

When the lock groove 25 is rotated about the support shaft 18 as a fulcrum, the lock groove 25 extends in a direction substantially perpendicular to the guide groove 17 of the base 11, and is in a space communicating with the guide groove 17. The striker 16 is held undetachably. The lock groove 25 is provided with a concave portion 30 cut out in a substantially triangular shape at one edge of the latch 12 on the opening direction X1 side. This recess 30
As shown in FIG. 1, the deepest portion is located at the center L of the guide groove 17 of the base 11 when the latch 12 is closed. The other edge of the lock groove 25 in the closing direction X2 side extends so as to protrude from the one edge.

The engagement receiving portion 26 is provided with the lock groove 25.
Of a circular arc provided in the lower part of the. The outer shape of the latch 12 below the engagement receiving portion 26 is an arc centered on the shaft hole 24. The connecting portion 27
Is protruded below a side portion facing the engagement receiving portion 26, and one of the urging springs 28 is connected to the connecting portion 27, and the other of the urging springs 28 is connected to the base 11. The connecting portion 27 is urged in the Y direction in FIG. 1 by the urging spring 28 to urge the entire latch 12 in the opening direction X1.

The claw lever 13 is a plate member having a shaft hole (not shown) formed at an upper portion thereof rotatably attached to the support shaft 19, and is engaged with an engagement receiving portion 26 of the latch 12. A connecting portion 33 for connecting the protruding portion 32 to a wire 35 connected to an opening means (not shown).
And a mounting hole 34 for a holding spring 36.

[0012] As shown in FIG.
The latch 12 has a shape that fits inside the engagement receiving portion 26 in the closed state. The connection portion 33 is provided with the engagement protrusion 3.
The wire 35 is fixed to a distal end of the projecting piece provided below a side part facing 2. The mounting hole 34 is provided at a lower portion of the engagement protrusion 32, and one of the holding springs 36 is connected to the other, and the other of the holding springs 36 is connected to an opposite side of the base 11. The holding spring 36 urges the entire claw lever 13 in the Z direction.

The position regulating plate 14 is provided with the support shafts 18 and 1.
9 prevents the latch 12 and the claw lever 13 from coming off and prevents rattling of the latch 12 and the claw lever 13 in the plate thickness direction. The position opposite to the guide groove 17 coincides with the guide groove 17. A groove 14a is provided, and a rib 14b is provided along the edge of the groove 14a.

Next, the operation of the lock device 10 having the above configuration will be described. First, in the locked state of the opening / closing body shown in FIG. 1, when the wire 35 is pulled by operating the opening means (not shown), the claw lever 13 moves the support shaft 19 against the spring force of the holding spring 36. It pivots about the center, and its engaging projection 32 is disengaged from the engagement receiving portion 26 of the latch 12. Thereby, the latch 12 is moved by the spring force of the urging spring 28, as shown in FIG.
8 about the striker 16 in the opening direction X1.
Is pushed out of the guide groove 17, whereby the opening / closing body is opened.

On the other hand, when the opening / closing member is pushed in the closing direction, the striker 16 enters the lock groove 25 of the latch 12. When the opening / closing body is further pushed, the striker 16 pushes the other edge of the latch 12 where the recess 30 is not formed, and the latch 12 is turned in the closing direction X2 against the spring force of the biasing spring 28. While moving, it enters the guide groove 17 of the base 11 and the groove 14 a of the position regulating plate 14. Next, when the engagement receiving portion 26 of the latch 12 and the engagement protrusion 32 of the claw lever 13 reach a position facing each other, the claw lever 13 is urged in the Z direction by the spring force of the holding spring 36. As a result, as shown in FIG. 1, the engagement receiving portion 26 and the engagement protrusion 32 are engaged with each other, so that a locked state is achieved.

In this locked state, since the opening / closing body is urged in the opening direction by urging means (not shown), a force in the X3 direction is applied to the striker 16 and the latch 12
In the opening direction X1. Therefore, the striker 16 is provided in the recess 30 of the lock groove 25 of the latch 12.
And is positioned while being urged into the recess 30. Therefore, even if vibrations are applied in this state due to running of the automobile or the like, the striker 16 moves and the latch 1
It is possible to suppress rubbing against the edge of the lock groove 25 of the second and to prevent interference with the edge of the guide groove 17 of the base 11 and to reliably prevent generation of abnormal noise. .

The present invention is not limited to the configuration of the above embodiment. For example, the concave portion 30 provided in the latch 12 is formed by a substantially triangular notch.
The striker 16 may be formed by a substantially semicircular notch having a diameter slightly larger than the outer diameter of the striker 16. That is, the recess 30
The shape may be any shape as long as the deepest portion is located at the center of the guide groove 17 with the latch 12 closed and the biased striker 16 can be positioned to prevent interference with the guide groove 17.

[0018]

As is apparent from the above description, in the locking device for the opening / closing body according to the present invention, the lock groove formed on the latch has the deepest edge at the center of the guide groove when the latch is closed. A recess is provided so that the portion is located, and the striker provided on the opening / closing body or the base is biased toward the recess by the urging in the opening direction of the opening / closing body. Can be prevented from rubbing against the edge of the lock groove of the latch, and can be reliably prevented from interfering with the edge of the guide groove. As a result, abnormal noise caused by these factors can be reliably prevented. be able to.

[Brief description of the drawings]

FIG. 1 is a front view showing a lock device for an opening / closing body according to the present invention.

FIG. 2 is a front view showing the latch of FIG. 1;

FIG. 3 is a front view showing an open state of the lock device.

FIG. 4 is a front view showing a conventional locking device for an opening / closing body.

[Explanation of symbols]

10 lock device, 11 base, 12 latch, 13
... claw lever, 14 ... regulating plate, 16 ... striker, 1
7: guide groove, 18, 19: support shaft, 25: lock groove, 2
6 ... engagement receiving part, 28 ... urging spring, 30 ... concave part,
32: engagement projection, 35: wire, 36: holding spring, L: center of guide groove.

Claims (1)

[Claims] 1. A base provided with a guide groove for accommodating a striker provided on one of a base and an opening / closing body rotatably mounted on the base and urged in an opening direction so as to advance and retreat. A latch having a U-shaped lock groove and biased in the opening direction, and a claw lever that engages with the latch and holds a closed state in which the lock groove of the latch is substantially orthogonal to the guide groove, is rotatably mounted, In the opening / closing body locking device provided on the other of the base and the opening / closing body, a deepest portion is located at an edge of the locking groove of the latch on the opening direction side at a center of the guide groove when the latch is closed. And a striker provided on the opening / closing body or the base is engaged with the recessed portion of the latch to be positioned by urging the opening / closing body in the opening direction. The opening and closing of the locking device to be.