JPS5931875Y2 - Automotive door latch device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a door latch device for an automobile, and its purpose is to prevent the generation of abnormal noise due to metal hitting each other when the door is closed.

A door latch device for an automobile consists of a combination of a claw provided on the vehicle body side that holds a door striker, and a detent lever that engages with the claw of the claw to maintain the claw holding the door striker. When the door striker pushes and rotates the claw, it fits into the holding part, and with the holding part of the claw completely holding the door striker, the detent lever engages with the claw part of the claw and becomes latched. When the detent lever is operated to release the engagement with the claw claw, the claw is rotated in the unlatching direction by a spring, and the door striker is released (
For example, see Utility Model Publication No. 50-17133).

The locking part of the detent lever is biased by a spring in the direction of pressing against the outer periphery of the claw, and when the claw is pushed by the door striker and rotates, the locking part of the detent lever comes into pressure contact with the outer periphery of the claw. It slides over the claw part and engages with the claw part, but at that time, the metal pieces violently hit each other, producing an abnormal noise.

The purpose of the present invention is to prevent the generation of abnormal noises when the door is latched as described above, and will be described below with reference to embodiments shown in the accompanying drawings.

In the figure, 1 is a base consisting of a resin base 1a and upper and lower metal plates on the front and back surfaces (ib, lc); 2;
indicates a claw rotatably attached to the base 1 by a shaft 3; 4 indicates a detent lever rotatably attached to the base 1 by a shaft 5; and claw 2 indicates a door striker 1.
It has a holding part 2a for holding 1 and claw parts 2b, 2b',
A spring (not shown) applies rotational force in the unlatching direction (counterclockwise in the figure), and the spring 6 applies rotational force to the detent lever 4 in the direction in which its locking portion 4a comes into pressure contact with the outer peripheral surface of the claw 2 (clockwise in the figure). The rotating force is applied to the

Reference numeral 1 denotes a cancel cylinder lever rotatably mounted on a base 1 by a shaft 8. A pin 9 provided on the detent lever 4 engages with the elongated hole 1a of the cancel cylinder lever 7, and the detent lever 4 rotates. When the door is closed with the lock lever (not shown) in the locked position, the locking portion 4 of the detent lever 4 is moved.
The upward swing of the canceler cylinder lever γ accompanying the upward rotation when a crosses the top of the pawl 2b' directly or indirectly returns the lock lever to the unlocked position. This prevents problems such as storage.

Reference numeral 10 denotes a stopper plate made of an elastic material such as rubber or synthetic resin, interposed between the canceler cylinder lever γ and the base 1, and the stopper plate 10 has an elongated hole through which the pin 9 provided on the detent lever 4 passes. 10a is formed and fixed to the base 1.

The elongated hole 10a is formed to match the locus of movement of the pin 9 when the detent lever 4 rotates, and at one end thereof, that is, the lower end in FIG. Claw portion 2b.

2b', the pin 9 is configured to be abutted and locked slightly before the tip of the locking portion 4a comes into contact with the outer circumferential surface of the claw 2.

Further, the stopper plate 10 is interposed between the canceler cylinder lever 7 and the base 1, and of course has the function of a buffer member to prevent the canceler cylinder lever T from rattling.

According to the present invention having the above-mentioned configuration, when the door is closed, the door striker 11 hits one side edge of the holding part 2a of the claw 2 and presses it, causing the tallow 2 to rotate and fit into the holding part 2a. The state shown in the first figure is reached, at which time the detent lever 4 slides with the locking portion 4a in pressure contact with the outer peripheral surface of the claw 2,
Claw portion 2 as shown in the figure beyond the top of claw portions 2b' and 2b.
When the locking part 4a passes over the claws 2b' and 2b, the pin 9 engages with the claw 2 and becomes latched. The detent lever 4 hits the lower end of the elongated hole 10a of the
Since a gap δ is secured between the tip of the locking part 4a and the outer circumferential surface of the claw 2, the locking part 4a strongly hits the outer circumferential surface of the claw 2 as in the conventional case, causing abnormal noise. Malfunctions that would cause this to occur are completely prevented.

In addition to regulating the rotation of the detent lever 4 as described above, the stopper plate 10 also functions as a buffer member to prevent rattling of the cancel cylinder lever, and overall significantly reduces noise during latching and unlatching. It is possible to measure this, and it can bring great practical effects.

[Brief explanation of the drawing]

FIG. 1 is a main part perspective view showing an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line AA in FIG. 1. 1...Bae 2...Crow, 2a...
...Holding part, 2b. 2b'...Claw part, 3, 5, 8...Shaft,
4... Detent lever, 4a... Locking part, 6... Splinter mid... Cancel cylinder lever, Ta... Oblong hole, 9...
・Pihe 10... Stopper plate, 10a...
...Elongated hole, 11...Door striker.

Claims (1)

[Scope of utility model registration request] A claw rotatably attached to a base and having a holding part and a claw part for holding a door striker; and a claw rotatably attached to the base and engaging with the claw part of the claw to hold the door striker. A detent lever that maintains the state,
In a door latch device consisting of a canceler lever or the like rotatably attached to a base so as to engage a pin provided on the detent lever and rotate with rotation of the detent lever, there is a gap between the canceler cylinder lever and the base. A stopper plate made of a cushioning material and installed on the base side to prevent the cancellation cylinder lever from rattling is provided with an elongated hole through which the pin provided on the detent lever passes, and the pin is inserted into one end of the elongated hole. A door latch device for an automobile, characterized in that the amount of rotation of the detent lever in the direction of engagement with the claw is restricted by contact.