JPH0321583Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an inner lock for an automobile door, and more particularly to a door equipped with a switch that detects an unlocking operation by the inner lock.

[Prior art and its problems] In general, an inner lock for an automobile door connects an operation knob provided inside the automobile door and a door lock mechanism with a connecting rod, and the door lock mechanism is activated by inserting or removing the knob. It is designed to unlock and lock. (For example, in 1987-
(Refer to Publication No. 86856).

Among such inner locks, one has been proposed in which an unlocking operation detection switch is provided at an appropriate location of the door locking mechanism to detect an unlocking operation of the door locking mechanism by an operating knob.

However, when it is necessary to determine whether the door lock mechanism is unlocked using the operating knob or by some other method, the above configuration does not allow the door to be unlocked using the operating knob due to variations in assembly. Even if the door was operated, the door lock mechanism would sometimes be unlocked before the switch was turned on, and if this occurred, there was a risk that it would be mistakenly determined that the door lock mechanism had been unlocked by a method other than the operation knob. .

[Means for Solving the Problems] In order to solve the above-mentioned problems, the inner lock of the automobile door according to the present invention connects the operating knob provided inside the automobile door and the door lock mechanism using a connecting rod. In an inner lock for an automobile door in which the door lock mechanism is unlocked and locked by operating the knob in and out, the operating knob and the connecting rod are coupled so as to be relatively movable in the operating direction by a predetermined stroke,
A spring member is provided between the knob and the connecting rod to bias the knob in the locking direction with a spring force smaller than the load required to unlock the door lock mechanism, and between the knob and the connecting rod, It is characterized by being provided with an unlocking operation detection switch that is activated when the knob is moved in the unlocking direction.

[Operation of the invention] In the above configuration, when the operating knob is operated in the unlocking direction, the spring member is first contracted in the unlocking direction, the unlocking operation detection switch is turned on, and then the door locking mechanism is activated via the connecting rod. Unlocking is activated.

When the operating knob is operated in the unlocking direction, the door lock mechanism is immediately locked via the connecting rod.

[Effects of the invention] As explained above, in this invention, when the operating knob is unlocked, the unlocking operation detection switch is first turned on, and then the door lock mechanism is unlocked. This makes it possible to detect unlocking operations before the actual unlocking operation is performed.

Therefore, for example, if the above-mentioned switch is used as a sensor in an anti-theft system, when the door lock mechanism is unlocked, it can be reliably determined whether the door lock mechanism is unlocked by the operating knob or by other means.

For example, if an alarm is to be issued when the door lock mechanism is unlocked by the operation knob while the anti-theft system is in operation, the switch should be turned on before the door lock mechanism is actually unlocked. , based on which an alert can be immediately issued,
The anti-theft effect can be improved.

[Embodiments] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1a, the inner lock of the first embodiment includes an operating knob 1 made of resin, and a connecting rod 2 whose lower end is connected to a door lock mechanism (not shown).
and a resin joint member 3 that connects the operating knob 1 and the upper end of the connecting rod 2 so as to be relatively movable by a predetermined stroke _l1 in the operating direction of the connecting rod 2.
It is equipped with

The door lock mechanism is assumed to be in the locked state when the connecting rod 2 is in the position shown in the figure, and is activated to the unlocked state by moving the connecting rod 2 upward by a predetermined stroke from this position. It is composed of

The operation knob 1 is composed of a grip portion 1a and a hollow housing portion 1b, and a resin lid 4 having a boss portion 4a at the lower center thereof is fixed to the lower end of the housing portion 1b.

The joint member 3 includes a plate portion 3a that is fitted into the housing portion 1b and is abutted against the upper portion of the housing portion 1b and is formed into a generally rectangular shape when viewed from above, and a cylindrical portion 3b that extends downward from the disk portion 3a. The outer periphery of the cylindrical portion 3b is vertically slidably supported by a boss portion 4a, and the upper end of the connecting rod 2 is fixed to the cylindrical portion 3b with a screw.

The cylindrical portion 3b of the joint member 3 is provided with a first metal retainer 6 that holds the first contact member 5.
and a second metal retainer 8 holding the second contact member 7 are fitted together, a coil spring 10 is compressed between both retainers 6 and 8, and the first retainer 6 is placed on the upper surface of the lid 4. The second retainer 8 is urged to come into contact with the lower surface of the plate portion 3a of the joint member 3.

The spring force of the coil spring 10 is set to be smaller than the load required to unlock the door lock mechanism.

The first and second contact members 5 and 7 normally face each other at an interval corresponding to the stroke _l1 , and when the operating knob 1 is used to unlock the door lock mechanism, the operating knob 1 moves upwardly. This constitutes an unlocking operation detection switch S that can be brought into contact with each other by the upward movement of the first contact member 5.

The lead wire 11 of the first contact member 5 and the lead wire 12 of the second contact member 7 are connected to an anti-theft system or the like. Note that 13 is a washer made of resin material, which connects the first retainer 6 and the coil spring 10.
is insulated.

In this way, the operating knob 1 has the grip part 1a and the housing part 1b integrally molded, and the switch S is housed in the housing 1b, so the number of parts is reduced and the size can be reduced. .

In the above configuration, in order to unlock the door lock mechanism, when grasping the grip part 1a of the operating knob 1 and pulling it upward, the spring force of the coil spring 10 is set to be smaller than the unlocking load of the door lock mechanism. Initially, only the operating knob 1 moves upward against the spring force of the coil spring 10. Then, when the operating knob 1 moves upward by a stroke l ₁ , the first contact member 5 contacts the second contact member 7, turning on the switch S (see Fig. 1b), and the operating knob 1 moves in the unlocking direction. An anti-theft system detects that the device has begun to be moved.

In this case, at the time when both contact members 5 and 7 come into contact, the connecting rod 2 and the joint member 3 are still in an immobile state, and therefore unlocking in the door lock mechanism has not actually started yet. In other words,
Before the actual unlocking operation is started, the unlocking operation of the door lock mechanism is detected just by starting to operate the operation knob 1 in the unlocking direction.

After both contact members 5 and 7 come into contact, the operating knob 1
When the door is pulled further upwards, the operating knob 1 and the connecting rod 2 move upward as a unit, and the actual unlocking operation of the door lock mechanism starts, and the connecting rod 2 moves upward by the stroke _l2 . At this point, the unlocking operation of the door lock mechanism is completed.
At this point, when you release the operation knob 1, the coil spring 1
Due to the biasing force of 0, only the operating knob 1 strokes.
It moves down by ₁ , and the switch S turns off (Fig. 1a).

On the other hand, in order to lock the door lock mechanism, it is sufficient to press and operate the operating knob 1. in this case,
Since the joint member 3 is in contact with the operating knob 1, the connecting rod 2 moves downward integrally with the operating knob 1 from the beginning, and when the connecting rod 2 moves downward by the stroke _l2 , the door lock mechanism is locked. Complete.

FIG. 2 shows a second embodiment, in which a shaft portion 21a is integrally provided on the operating knob 21, and a first retainer 23 holding a first contact member 22 is fixed to the lower end of the shaft portion 21a with a bolt 24. On the other hand, the shaft part 2
A second contact member 27 is disposed at the bottom of a roughly rectangular lid 26 having a hole 25 into which the contact member 1a is slidably fitted.
A second retainer 28 holding a lock is disposed, and a coil spring 30 whose spring force is smaller than the unlocking load of the door lock mechanism is compressed between both retainers 23 and 28.

A housing 31 that covers both contact members 22 and 27 is fixed to the lid 26.
The upper end of a connecting rod 32, whose lower end is connected to a door lock mechanism, is fixed to the cylindrical portion 31a at the lower center of the door lock 1 with a screw.

Note that 33 and 34 are lead wires drawn out from the first contact member 22 and the second retainer 28, respectively.

In the second embodiment, when the operation knob 21 is pulled upward, the lid 26, the housing 31, and the connecting rod 32 initially remain stationary, only the operation knob 21 moves upward, and the first contact member 22 is moved upward. After contacting the second contact member 27, the lid 26,
The combination of the housing 31 and the connecting rod 32 moves upward together with the operating knob 21.

The third embodiment shown in FIG. 3 has a similar structure to the embodiment of FIG. Here, common members are given the same reference numerals and their explanations are omitted.

This third embodiment employs a push switch 41 in place of the unlocking operation detection switch S (contact members 5, 7) of the first embodiment. A push switch 41 is attached to the lower surface of the plate portion 3a of the joint member 3, and a distance _l1 is set between the switch button 41a of the push switch 41 and the upper surface of the lid 4 when the door is locked as shown. This third embodiment operates similarly to the first embodiment.

The fourth embodiment shown in FIG.
This is an intervention.

That is, the upper end of the upper rod 51a is fixed to the cylindrical part 52a of the operation knob 52 with a screw, and the lower end is fixed to the cylindrical part 5 at the upper center of the housing 53 of the switch S.
Fix to 3a with screws. On the other hand, the lower rod 51b
The upper end is screwed to the cylindrical part 3b of the joint member 3, and the lower end is connected to the door lock mechanism.

In the fourth embodiment, when the operation knob 52 is pulled upward, only the upper rod 51a moves upward, and after the first contact member 5 contacts the second contact member 7, both rods 51a, 51b move upward. moves upward in unison.

[Brief explanation of the drawing]

FIG. 1a is a sectional view of an inner lock of an automobile door according to a first embodiment of the present invention, and FIG.
Figure a is a cross-sectional view of the inner lock during an unlocking operation, and Figures 2 to 4 are cross-sectional views of the second to fourth embodiments of the present invention, respectively, when the lock is locked. 1...Operation knob, 1b...Housing part, 2...
...Connection rod, 10...Coil spring, S...Switch for detecting unlocking operation.

Claims (1)

[Claim for Utility Model Registration] An inner part of an automobile door in which an operating knob provided on the inside of the automobile door and a door lock mechanism are connected by a connecting rod, and the door lock mechanism is unlocked and locked by operating the knob in and out. In the lock, the operation knob and the connecting rod are connected so as to be relatively movable in the operation direction by a predetermined stroke,
A spring member is provided between the knob and the connecting rod to bias the knob in the locking direction with a spring force smaller than the load required to unlock the door lock mechanism, and between the knob and the connecting rod, An inner lock for an automobile door characterized by being provided with an unlocking operation detection switch that is activated when the knob is moved in the unlocking direction.