JPH0341021Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a childproof device for a vehicle door lock.

(Prior art) In this type of device, for example,
As disclosed in the above publication, the child lever is generally supported apart from the support shaft of the swing lever that engages with the open plate.

(Problems to be Solved by the Invention) For this reason, there have been problems in that the pivot means for these levers are complicated and the lock case cannot be miniaturized.

(Means for solving the problem) The present invention is aimed at solving the above problem, and is designed to be connected to an inner handle rod and an outer handle rod to unlock the door. In a vehicle door lock having a rocking open plate and a lock plate connected to a lock lever to nullify the rocking of the open plate, the inner handle rod and the open plate are attached to the back cover of the lock case. A first rocking piece is pivotally supported by an upright support piece and engages with the open plate, and a second rocking piece is pivotally supported coaxially with the first rocking piece and is pivotally fixed to the inner handle rod. The movable piece is connected via a locking piece that is pivotally supported by one of the first and second rocking pieces and is locked in a groove provided in each, and the locking piece is
The present invention is characterized in that a child lever is provided which interlocks with the locking piece so as to swing between the locking position and the release position, and the child lever is coaxially supported with the first and second swinging pieces.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 indicates a lock case, and a lock case 1 is provided with a lock case exposed on the back surface and connected to an inner handle rod 2 and an outer handle rod 3. An open plate 4 is provided which swings to unlock the door, and a lock plate 6 is connected to a lock lever 5 to nullify the swing of the open plate 4. And inner handle rod 2,
The connection with the open plate 4 is made using the plate 4.
A first rocking piece 10 that engages at one end with
The first support surface 8a of the support piece 8 erected on the back cover 7 of
The first swinging piece 1 is coaxially supported via a support shaft 9.
A concave groove 10a in which a locking portion 14b of a locking piece 14 which is pivotally supported on the first swinging piece 10 via a pivot 12
and the concave groove 13 provided in the second swinging piece 11. To elaborate on this, 15
indicates a child lever, and the lever 15 has a control pin 16 and a regulation pin 17 that protrude toward one side as shown in FIG. 2. The regulating pin 17 is supported by the supporting piece 8 coaxially with the swinging piece 11, and the regulating pin 17 is inserted into the regulating hole 18 of the supporting piece 8, and the range where both side surfaces of the regulating pin 17 contact both end surfaces of the regulating hole 18. The child lever 15 can be rotated.

The control pin 16 is engaged in a groove between the hook portion 14a and the locking portion 14b of the locking piece 14, and when the child lever 15 is rotated in the direction of arrow A shown in FIG. , push the base of the locking part 14b downward and push the bottom surface of the locking part 14b onto the first swinging piece 10.
At the same time, the locking portion 1
The tip of 4b is engaged with the concave groove 13 of the second swinging piece 11, and the locking portion 14b is rotated in the direction of arrow B.
escapes from both rocking pieces 10 and 11. Arrow A or B
When rotating in the direction, when the neutral point is passed, the spring 19 acts in the rotating direction to maintain the rotating position. Further, the lock lever 5 is pivotally supported on an inner second bearing surface 8b which is bent and spaced apart from the outer first bearing surface 8a formed on the support piece 8. In addition, although the locking piece 14 is pivotally supported by the first swinging piece 10 in the illustrated example, it may be pivoted by the second swinging piece 11.

To explain its operation, the locking piece 14 is normally in a rotated position in the direction of arrow A shown in FIG. 4, and as shown in the same figure and FIG. It is engaged with the groove 13 surface of the piece 11. At this time, if the lock plate 6 is in the release position, when the inner handle rod 2 is pulled and the second swinging piece 11 is rotated about the support shaft 9 in the direction of arrow C in FIG. 4, which is the door opening direction, The locking piece 14 is pushed by the groove 13 of the second swinging piece 11, and the first swinging piece 10 is also pushed in the same direction by the locking piece 14, so that the locking piece 14 is rotated around the spindle 9. The door is rotated and the open plate 4 engaged therewith is moved to release the lock of the door by the mechanism inside the lock case 1.

Here, when the child lever 15 is rotated in the direction of arrow B, the locking piece 14 is pushed by the control pin 16 and rotates in the same direction about the pivot 12.
b is released outward from the position where it is engaged with the grooves 10a and 13. Therefore, even if the inner handle rod 2 is pulled to rotate the second swinging piece 11 in the direction of arrow C in FIG. Since the opening plate 4 is not operated and the opening plate 4 is not operated, the door remains locked.

(Effect of the invention) As described above, according to the invention, the swinging piece that connects the open plate and the inner handle rod in the vehicle door lock, and the child lever that disables the swinging of the swinging piece, are connected to the lock case. Since the child lever is coaxially supported on the support piece that stands up on the back cover of the camera, the child lever can be installed compactly without taking up much space, making it possible to downsize the door lock. a first rocking piece that fits together, a second rocking piece that is coaxially supported with the first rocking piece and is pivoted to the inner handle rod, and one of the first and second rocking pieces. It is formed with a locking piece that is pivotally supported and locked in a groove provided in each, and the locking piece is swung between a locking position and a release position by a child lever. This has the effect that the switching operation is reliably performed.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a rear view, FIG. 2 is a side view, FIG. 3 is an exploded perspective view of the main parts, and FIG. 4 is an assembled perspective view. 1... Lock case, 2... Inner handle rod, 3... Outer handle rod, 4...
Open plate, 5... Lock lever, 6...
Lock plate, 7...Support piece, 10...First swing piece, 11...Second swing piece, 13...Concave groove, 14
... Locking piece, 15 ... Child lever.

Claims (1)

[Scope of utility model registration request] A vehicle having an open plate that is connected to an inner handle rod and an outer handle rod and swings to unlock the door, and a lock plate that is connected to a lock lever to nullify the swing of the open plate. In the door lock, the inner handle rod and the open plate are connected to a first swinging piece that is pivotally supported by a support piece provided upright on the back cover of the lock case and engages with the open plate. a second rocking piece that is coaxially supported with the first and second rocking pieces and is locked to the inner handle rod; A child lever is provided which is connected to the first locking piece and interlocks with the locking piece so as to swing the locking piece between the locking position and the release position, and the child lever is connected to the first locking piece. and a child-proof device for a vehicle door lock, characterized in that the device is coaxially supported with the second swinging piece.