JPH072912Y2 - Open / close detection switch device for vehicle doors - Google Patents

Description

TECHNICAL FIELD The present invention relates to an opening / closing detection switch device for a vehicle door.

2. Description of the Related Art In an automobile, a door switch for detecting the opening and closing of a door is mounted in a door latch device, the back surface of the claw of the door latch device is formed as a cam surface, and the tip end of an operation piece of the door switch slides on the cam surface. A structure has been developed in which the operating piece of the door switch is actuated in the axial direction by the cam surface to be turned on and off by the rotation of the claw when the door is opened and closed. It has already been published in the Gazette.

Problems to be Solved by the Invention The conventional structure as described above has a structure in which the rotation of the claw of the door latch device is converted into the axial linear motion of the operating piece of the door switch. It is difficult to take a sufficient amount of power, and therefore, a sensitive switch (micro switch) that switches between on and off with a small stroke must be used. There is a problem that the switch may be switched.

Further, since the rotary motion of the claw is converted into a linear motion, it goes without saying that the switch operation is not very efficient.

Means for Solving Problems The present invention has a door opening / closing detection switch having a switch main body having a fixed contact plate and a movable contact slidably mounted on the switch main body and slidingly contacting the fixed contact plate. A slider, and the door opening / closing detection switch is used as the base of the door latch device, and when the claw is rotated from the unlatched position to the latched position, the slider is pushed by the outer peripheral projection of the claw and slidably moves around the rotation center of the claw. It is characterized in that it is installed so as to emit a door closing signal.

Action As described above, the slider having the movable contact slides around the center of rotation of the claw in a circular path along with the rotation of the claw, so that the switch operation can be performed smoothly and efficiently without difficulty. In addition, the sliding stroke of the slider can be made sufficiently long, and even if the claw oscillates to some extent, a malfunction of the switch will never occur, and a highly reliable switch device can be provided.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, 1 is a base, 2 is a claw rotatably mounted on the base 1, and the claw 2 is a door striker.
It has an engagement groove 21 into which 11 is fitted and engaged, and claw portions 22 and 23 into which a detent lever 3 described later is engaged.

The detent lever 3 has an engaging portion 31 at one end, is rotatably attached to the base 1, and is urged by a spring 4 in a direction in which the engaging portion 31 contacts the outer peripheral surface of the claw 2. At the latched position of the claw 2 (shown by the solid line in the figure), the engaging portion 31 of the detent lever 3 engages with the claw portion 23 of the claw 2 to hold the door latched state, and from that state, the door outer handle or inner handle not shown. Is operated to rotate the detent lever 3 against the urging force of the spring 4 (counterclockwise in the drawing) to engage the engaging portion 31.
However, the claw 2 which is disengaged from the claw portion 23 is rotated by the return spring (not shown) (counterclockwise in the figure) to return to the unlatch position shown by the chain line.

The door latch device composed of the claw 2 and the detent lever 3 as described above has been widely used in general automobiles and is well known.

Reference numeral 5 denotes a door opening / closing detection switch mounted on the base 1. The door opening / closing detection switch 5 includes a switch body 6 and a slider 7 slidably attached to the switch body 6.

That is, the switch body 6 has an arcuate inner peripheral surface 61 having the center of rotation of the claw 2 as a center, and the inner peripheral surface 61 is the claw 2.
Of the protrusion 24 (one of the front and rear protrusions forming the engagement groove 21 in the illustrated embodiment) is arranged so as to be close to the outside of the rotation locus a, and the arc-shaped inner peripheral surface 61 A slider 7 is slidably fitted in a guide groove 62 formed in the switch body 6 along with the contact portion 71 of the slider 7 so that
Of the claw 2 protruding from the arc-shaped inner peripheral surface 61 of
It is assembled so as to be positioned on the rotation trajectory a of 24.

As shown in FIG. 2, the fixed contact plate 8 is fixed to the bottom surface of the guide groove 62 of the switch body 6 while being held by an electrically insulating material 8a such as a synthetic resin material, while the end surface portion of the slider 7 is fixed. A movable contact 9 is attached to the movable contact 9, and the movable contact 9 is a spring.
8a makes sliding contact with the fixed contact plate 8 while being pressed against it.

Reference numeral 10 is a return spring of the slider 7.

As shown in FIG. 3, the fixed contact plate 8 is composed of three contact plates 81, 82 and 83, and when the movable contact 9 connects 81 and 82 to each other, an open signal of the door is issued and 81 The door close signal will be issued when 83 is reached.

A cover portion 73 is integrally formed on the slider 7, and a notch groove (a notch groove for sliding the inner projecting portion 72 of the slider 7) 63 formed on the arc-shaped inner peripheral surface 61 of the switch body 6 is provided on all the sliders. At the sliding position, the cover portion 73 is always closed to prevent foreign matter such as water from entering the sliding portion between the fixed contact plate 8 and the movable contact 9. The cover portion 73 is not necessary if intrusion prevention means is provided.

In the above, when the door is opened, the claw 2 is in the unlatch position shown by the chain line in FIG.
1, the movable contact 9 is in the position shown by the chain line in FIG. 1, and the movable contact 9 is in a state of passing through the fixed contact plates 81 and 82. For example, it should be operated in the door open state such as turning on the interior light. Issue a door open signal to activate the equipment.

Next, when the door is closed, the door striker attached to the vehicle body side 11
Strikes one side edge of the engaging groove 21 of the claw 2 in the unlatched position and presses and rotates the claw 2, the striker 11 relatively engages in the engaging groove 21 as shown by an arrow, and When the claw portion 23 engages with the engaging portion 31 of the detent lever 3, the latched state as shown by the solid line in FIG. 1 is obtained.
On the way, for example, the claw portion 22 is the engaging portion 31 of the detent lever 3.
The protrusion 24 of the claw 2 hits the abutting portion 71 of the slider 7 in the vicinity of the half-latch state where the slider 7 is pushed against the return spring 10 and the claw 23 engages the detent lever 3. In the fully latched state where the slider 7 is engaged with the joint portion 31, the slider 7 is held at the position shown by the solid line in FIG.

In this state, the movable contact 9 is switched to a state in which the fixed contact plates 81 and 83 are passed through, and issues a door closing signal for operating a device to be operated when the door is closed, for example, for fastening the automatic fastening type seat belt device. .

When the detent lever 3 is unlatched to release the engagement between the engaging portion 31 and the claw portion 23, the claw 2 is rotated counterclockwise in FIG. 1 by the spring force of a spring (not shown) to the unlatched position shown by the chain line. Although the door striker 11 is disengaged and the door is opened, the slider 7 slides counterclockwise in FIG. 1 by the return spring 10 as the claw 2 rotates in the unlatch direction. Upon reaching the position indicated by the chain line, a door open signal is issued to turn on the interior light as described above, or to release the automatic fastening type seat belt device.

In the above operation, the slider 7 slides around the center of rotation of the claw 2 with a circular orbit accompanying the rotation of the latch and unlatch of the claw 2. Therefore, the sliding movement is not only reasonably and smoothly performed. Since the sliding stroke can be made sufficiently long, it is possible to form a sufficient margin between the position where the door open signal is issued and the position where the door close signal is issued, and the movable contact 9 causes the movable contact 9 to move due to vibration during traveling. There is no possibility that a problem such as moving from the position that issues the closing signal to the position that issues the door opening signal may occur.

In the illustrated embodiment, the slider 7 is pressed and slid by one of the front and rear projections 24 forming the engaging groove 21 of the claw 2, but the present invention is not limited to this example. ,
It is possible to employ any configuration capable of sliding the slider 7 around the rotation center of the claw 2 by rotating the claw 2.

Further, the fixed contact plate 8 of the door opening / closing detection switch 5 is turned off when the door is opened and turned on when the door is closed, for example.
It is needless to say that the contact signal may be a door open signal and the on signal may be a door close signal in this case.

Further, the movable contact 9 is not limited to the plate-like body as shown in the illustrated embodiment, but may have any shape such as a ball-shaped one extending between 81 and 82, 81 and 83 of the fixed contact plate 8. .

As described above, according to the present invention, the door opening / closing detection switch can be slid on the switch main body attached to the base of the door latch device and along the switch main body in a state substantially along the outside of the rotation path of the claw. And a movable contact provided on the slider and a fixed contact plate fixed to the switch body. By adopting a structure that switches between a state that issues an open signal and a state that issues a door close signal, the sliding movement of the slider that accompanies the rotation of the claw when the door is opened and closed can be performed smoothly and efficiently. In addition, the sliding stroke of the slider can be made sufficiently long, and there is no ambiguity between the position where the door close signal is issued and the position where the door open signal is issued. Even if the claw vibrates to some extent due to the vibration of the switch, the switch never malfunctions, and the reliability of the switch can be significantly improved.

By incorporating the door open / close detection switch in the door latch device, it is possible to integrate the parts and to bring various effects such as accurate detection of the open / close of the door even if the door is deformed due to a collision or the like. Needless to say.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention and is a front view showing a mounting state of a door open / close detection switch. Figure 2 (a),
(B) and (C) are a sectional view, an AA sectional view, and a BB sectional view of the door open / close detection switch of FIG. FIG. 3 is a diagram showing an example of the relationship between the fixed contact plate and the movable contact. 1 ... Base, 2 ... Claw, 3 ... Detent lever, 5 ...
Door open / close detection switch, 6 ... switch body, 7 ... slider, 8 ... fixed contact plate, 9 ... movable contact, 10 ... return spring, 11 ... door striker.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-55-129574 (JP, A) JP-A-63-271835 (JP, A) Actual opening 63-177576 (JP, U) Actual opening Sho-56- 172414 (JP, U) JP 61-49471 (JP, B2) JP 43-14324 (JP, Y2)

Claims (1)

[Scope of utility model registration request] 1. A door striker which rotates from an unlatched position to a latched position by hitting a base attached to a vehicle door and a door striker rotatably attached to the base and attached to a vehicle body when the door is closed. A vehicle door latch including a claw that engages with an engagement groove and a detent lever that is rotatably mounted on the base and that engages with a claw portion of the claw at the latch position of the claw to maintain a door striker engagement state of the claw. In the device, a door open / close detection switch comprising a switch main body having a fixed contact plate and a slider having a movable contact slidably fitted on the switch main body and slidingly contacting the fixed contact plate is provided with a claw unlatch. Rotation from the position to the latched position causes the outer peripheral protrusion of the claw to move the slider in a circular path around the center of rotation of the claw. So that by pressing the sliding emit No. door closing signal, closing detection switch device of the vehicle door, characterized in that attached to face the outer peripheral portion of the base to the claw of the door latch device.