JPH024981Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a door lock device for an automobile, and particularly to a child lock mechanism installed in the door lock.

(Prior Art) Child locks are conventionally known as a safety mechanism that prevents a door from being unlocked even if an inner handle is erroneously operated while a car is running.

However, in a case where the inner handle itself is locked, if a large load is inadvertently applied to the inner handle, there is a risk that the locking mechanism may be damaged and the door lock may be released.

In order to prevent such danger,
The publication states that if the child lever is operated, even if the inner handle is operated, the inner lever linked to the inner handle will not swing and the door locking device will remain in the locked state. A child lock mechanism of the old idle swing type has been proposed.

However, this idle-action child lock mechanism requires two inner levers, and by providing a pin between the two inner levers to link them, and operating this pin with the child lever, the linkage between the two inner levers can be established. Since the structure is designed to be released, the structure is complicated, the number of parts is large, and there are problems with assemblage such as caulking of the pins.

(Purpose of the invention) The purpose of the invention is to have a simpler structure, and
An object of the present invention is to provide a device for releasing a lock for a child which is excellent in assemblability and operability.

(Structure of the invention) In order to achieve the above object, the present invention provides a connecting lever movable in the axial direction of the support shaft of the inner lever that is linked to the operation of the inner handle, and connects the inner lever and the door lock. While the connection lever is normally connected to the push lever that releases the inner lever, a child lever that displaces the connection lever in the axial direction of the spindle is provided, and when the child lever is locked, the connection between the inner lever and the connection lever is established. Therefore, in this state, even if the inner handle is operated, the inner lever simply swings in vain, and the door lock is not released.

(Effects of the invention) According to the invention, it is possible to configure a child lock idle device by simply interposing a connecting lever between the inner lever and the push lever, which simplifies the structure and reduces the number of parts. It is possible to reduce this and improve the ease of assembly.

(Example) Hereinafter, embodiments of the present invention will be described in detail.

In the door lock device 1 shown in FIGS. 1 and 2, 2 is a push rod that is linked to the operation of an outer handle (not shown), 3 is an inner rod that is linked to the operation of an inner handle (not shown), and 4 is an outer handle. Alternatively, it is a push lever that releases the door lock when the inner handle is operated. The push lever 4 is
As shown in FIG. 1, the coil spring 7, which is rotatably supported around the shaft 5 and tensioned between it and the base 6, rotates the shaft 5 clockwise (in the locking direction).
, and one end of the push lever 4 is
It is connected by a connecting pin 8 to one end of a push rod 2 which is interlocked with the outer handle.
On the other hand, the other end of the push lever 4 is
As clearly shown in the figure, it is connected to an inner lever 9 connected to one end of the inner rod 3 via a connecting lever 10.

In FIGS. 1 and 2, reference numeral 11 indicates a safety lever that is linked to an inner lock knob (not shown), and as shown by arrow A in FIG. When the inner lock rod 12 is pressed down in conjunction with the depression, the safety lever 11 is displaced in the direction of arrow B, and at that displacement position, the linkage falling portion 11a provided on the safety lever 11 escapes from the tip of the claw lever 13. Even when the push lever 4 is operated, the claw lever 13 is not operated. As shown in FIG. 3, this claw lever 13 is for locking a striker lock fork 15 rotatably supported by a shaft 14 in the lock position, when the inner lock knob is not locked. Sometimes, when the inner handle or the outer handle is operated to release the lock, the claw lever 13 is operated around the shaft 16 in the direction shown by the arrow R via the push lever 4 and the safety lever 11, and a striker (not shown) is activated by the striker lock fork 15. ) is unlocked.

Next, with reference to FIGS. 4 and 5, a mechanism for idling the child lock will be explained.

As shown, the inner rod (see Figure 1 3)
A bell crank-shaped inner lever 9 connected to
The bent portion thereof is rotatably supported by a support shaft 17 on the side wall 6a of the base 6 (see FIG. 1). The support shaft 17 is formed long in the axial direction, and the upper end 10a of the connecting lever 10 is further hinged to the support shaft 17 so as to be movable in the direction shown by arrow D. A coil spring 18 is inserted between the support shaft 17 and the inner lever 9, and the spring force of the coil spring 18 causes the connecting lever 10 to press against a stopper 19 formed at the end of the support shaft 17. It is biased in the direction of contact. A bent linking part 9b extending in the direction of the connecting lever 10 is provided at the lower part of one lever part 9a extending downward of the inner lever 9, and the inner lever 9 is in the state shown by arrow C in the state shown in FIG. When operated in the unlocking direction, the connecting lever 10 is linked to the rotation of the inner lever 9 via the bending linking portion 9b, and the connecting lever 10 contacts the push lever 4 from the unlocking direction, as described above. It is now possible to unlock the door.

A child lever 20 is provided at the lower end of the connection lever 10. This child lever 20 is formed as a two-pronged lever installed in the horizontal direction, and one lever portion 20a that extends downwardly of the push lever 4 is provided with a long groove 21 in the longitudinal direction. 1
The lower end portion 10b of 0 is fitted so as to be displaceable in the longitudinal direction. The rotation shaft 22 of the child lever 20 is provided with a fan-shaped moderation cam member 23 integrally with the rotation shaft 22.
A triangular bent portion 24a provided at one end of the wire spring 24 is engaged with the two moderation recesses 23a and 23b.
a and the moderation cam member 23 constitute a moderation mechanism for the child lever 20.

As shown in FIG. 3, the wire spring 24 is wound around the shaft 16 of the claw lever 13, and the other end 24b is latched to the spring hook 13a of the claw lever 13. It also serves as a spring that always biases in the locking direction (in the direction opposite to arrow R in FIG. 3).

The operation of the child lock mechanism having the above structure will be explained.

As shown in FIG. 4, when the child lever 20 is in the unlocked position, the inner lever 9
Since the connecting lever 10 is held by the spring force of the coil spring 18 so that the bending connecting portion 9b provided at the inner handle engages with the connecting lever 10, the inner lever 9 is linked with the unlocking operation of the inner handle , when the connecting lever 10 is rotated in the direction C in the figure, the connecting lever 10 is interlocked with the inner lever 9 via the bending connecting portion 9b, and the push lever 4 is rotated with the connecting lever 1.
The lower end portion 10b of the door lock is rotated in the release direction to release the door lock.

On the other hand, as shown in FIG. 5, the bent part 24 of the wire spring 24 slips out of the one moderation recess 23a of the moderation cam member 23 and moves the other lever part 20b of the child lever 20 to the other moderation position. When it falls into the recess 23b again and operates until the moderation is applied, one of the child levers 20
The connecting lever 10 fitted into the long structure 21 of the portion 20a
is moved in the direction of arrow D centering on the stopper 19 side of the shaft end of the support shaft 17 relative to the inner lever 9, and is released to a missed position where the inner lever 9 is not linked with the bending linking portion 9b.

Therefore, when the inner lever 9 is operated, only the inner lever 9 rotates, and the connecting lever 10 does not move in conjunction with the inner lever 9. In other words, the inner lever 9 is swung in vain.

As described above, the child lock idling device according to the present invention has a simple structure, a small number of parts, and is easy to assemble.

[Brief explanation of the drawing]

1 and 2 are respectively a plan view and a side view of a door lock device equipped with a child lock failure device according to an embodiment of the present invention, FIG. FIG. 5 is a perspective view of a main part of the child lock failure mechanism, FIG. 4 shows a state in which the child lock is not engaged, and FIG. 5 shows a failure state in which the child lock is engaged. DESCRIPTION OF SYMBOLS 1... Door lock device, 4... Push lever, 9... Inner lever, 10... Connection lever, 13... Claw lever, 17... Support shaft, 18
... Coil spring, 20 ... Child lever, 23 ... Moderation cam member, 24 ... Wire spring, 24a ... Bending portion.

Claims (1)

[Scope of utility model registration request] An inner lever that is connected to the inner handle and interlocks with the operation of the inner handle, a support shaft that rotatably supports the inner lever, and a support shaft that is rotatably supported on the support shaft to release the inner lever and door lock. A connecting lever that connects the push lever to the push lever, a spring that biases the connecting lever in one direction of the support shaft, and displacing the connecting lever between a linked position where the lever is linked with the inner lever and a missed position where it is not linked with the inner lever. What is claimed is: 1. A child lock lock device comprising a child lever and a holding mechanism for holding the child lever in the lock position when the child lever is operated to the lock position.