JPH1050164A - Door switch for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the width of the door switch for a vehicle small in dimension in particular, and concurrently enhance remarkably the reliability of body grounding. SOLUTION: A bracket 5 is inserted into a switch case 1 so as to be molded. The bracket 5 is provided with a mounting hole 7 which is brought into contact with a mounting screw 27 when the bracket is fastened to a body side mounting part 28, an earth side electrode plate 8 with which a movable side electrode 22 is slid and brought into contact, and with an earthing terminal 29 projected into the recessed part of a male connector 3. The earthing terminal 29 is provided halfway between the mounting hole 7 and the earth side electrode plate 8. The body earth of a door switch for a vehicle is grounded at two places, that is, the mounting hole 7 and the earthing terminal 29.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved vehicle door switch installed around a vehicle door.
In particular, the present invention relates to a vehicle door switch capable of reducing the size of a vehicle door switch and improving the reliability of a body ground.

[0002]

2. Description of the Related Art Conventionally, it is turned on in conjunction with opening and closing of a vehicle door.
Various vehicle door switches for turning on / off have been used. That is, this type of vehicle door switch is configured such that a slidably inserted push rod is elastically urged by a coil spring in a direction in which the push rod always projects so as to protrude from a mounting base of a case, and is fixed to a pole plate. The structure is such that a movable electrode fixed to the push rod is provided next to the electrode. Then, a connector is continuously and integrally formed on the bottom surface of the pole board, and after the vehicle is assembled, a coupler that fits with the connector on the harness side and connects by wiring is configured. Incidentally, there is a conventional technique disclosed in Japanese Utility Model Laid-Open No. 1-172231.

[0003]

However, in order to improve the accuracy of the ON / OFF switching position of the switch when mounted on a vehicle, this type of door switch is installed near a striker where the relative displacement amount is large. However, in that case, the space of the mounting portion is limited, and it is necessary to reduce the size of the vehicle door switch. Furthermore, the reliability of a vehicle door switch is important because it provides door control information to various control units.
In particular, the conventional vehicle door switch has low body ground reliability, and improvement in this respect has been desired.

[0004] The present invention has been made in view of the above problems, and the overall size of the door switch for a vehicle, such as the depth and width, is reduced, so that it can be easily installed near the door striker. It is another object of the present invention to provide a vehicle door switch in which the reliability of the body ground is significantly improved.

[0005]

In order to solve the above-mentioned problems, first, the present invention is directed to a switch case having a switch sliding chamber, and a switch slide slidably disposed in the switch sliding chamber. The switch slider is provided with a moving element and a metal bracket having a mounting hole with which the mounting screw comes into contact when the mounting screw is tightened to the vehicle-body-side mounting portion while being insert-molded in the switch case. In a vehicle door switch in which a movable electrode contacts and separates from a fixed electrode provided on an inner wall of the switch sliding chamber to perform a switch operation, an earth electrode provided on the inner wall of the switch sliding chamber and slidably contacting the movable electrode. A plate and a ground terminal protruding from a male connector recess adjacent to the switch sliding chamber are formed integrally with the bracket. To provide a door switch for a vehicle.

According to a second aspect of the present invention, there is provided a door switch for a vehicle, wherein the ground terminal is provided at an intermediate position between the mount hole and the ground electrode plate.

Further, the invention according to claim 3 provides a vehicle door switch characterized in that the terminal of the fixed electrode is projected into the male connector recess together with the ground terminal.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vehicle door switch S according to the present invention will be described below with reference to the accompanying drawings. First, a member denoted by reference numeral 1 is a switch case formed of a non-conductive synthetic resin. The switch case 1 is
The switch sliding chamber 2 has a rectangular cylinder shape, and a male connector recess 3 is provided beside the switch sliding chamber 2.
Is integrally molded.

The switch case 1 has a flange portion 4 and a metal bracket 5 is insert-molded on the flange portion 4. As shown in FIG. 2, the bracket 5 has a rubber cover winding edge 6 formed on a peripheral edge, a mounting hole 7 having a collar-shaped rising portion at one end,
It comprises a ground electrode plate 8 exposed on the inner wall surface of the switch sliding chamber 2 and a ground terminal 29 protruding from the male connector recess 3. The ground terminal 29 is provided between the mount hole 7 and the ground-side electrode plate 8, thereby shortening the width of the vehicle door switch S and reducing the size of the vehicle door switch S. .

The switch sliding chamber 2 of the switch case 1
, A switch slider 10 is interpolated. The switch slider 10 is slidable in the direction of arrow A shown in FIG. 1 and locks the shoulder portion 11 on the inner step 9 formed on the flange portion 4 so that the push rod 12 projects forward. ing. The switch sliding chamber 2 has a bottom cover member 13 fitted on the bottom side thereof, and the bottom cover member 13 and the switch
And the switch slider 10 is biased by elastically mounting the coil spring 14.

The bottom cover member 13 has a pair of snap locking projections 16, 16 protruding from the outer surface of the side portion 15 facing the position, and the snap locking projections 16, 16 are connected to the switch sliding chamber 2. It is elastically fitted with the transparent windows 17, 17 provided on the wall surface. The bottom cover member 13 has a protruding portion 18 protruding at the center of the inner surface thereof.
The end of the coil spring 14 is held by a projecting shaft 19 protruding at the center of the inner surface of the coil spring 14, and the projecting shaft 19 prevents buckling of the coil spring 14 during compression.

A member denoted by reference numeral 20 is a terminal provided on the fixed electrode 21 provided on the inner wall of the switch sliding chamber 2. The terminal 20 projects together with the ground terminal 29 into the male connector recess 3.
The member composed of the terminal 20 and the fixed-side electrode 21 has a substantially U-shape, and is insert-molded in the flange portion 4.

A movable-side electrode 22 is mounted in a space of the switch sliding chamber 2 where the fixed-side electrode 21 and the ground-side electrode plate 8 face each other. The movable-side electrode 22 has a through hole 22d formed in the base 22d and a tongue-sliding end 2 extending from the base 22d.
2a and 22b, a through hole 22d is attached to the protruding shaft 19, and the base 22
By pressing d against the switch slider 10, the movable-side electrode 22 and the switch slider 10 are integrated.

The fixed electrode 21 and the earth electrode plate 8 have different lengths.
The dimension of the ground-side electrode plate 8 is set to be longer than that of.
Therefore, when the pressing force is not applied to the push rod 12, that is, when the vehicle door is opened, the tongue-sliding contact ends 22a,
22b come into contact with each other, whereby the vehicle door switch S is turned on. Conversely, push rod 12
In a state where a pressing force is applied in the direction of arrow A shown in FIG. It becomes OFF operation state. However, the ground side electrode plate 8 and the tongue sliding contact end 22b are always in contact.

A member denoted by reference numeral 23 is a rubber cover for covering the front surface of the switch in a watertight manner. The rubber cover 23 includes a seal lip 24 engaged with the rubber cover winding edge 6 of the bracket 5 and the push rod 12.
A diaphragm-shaped pressing deformation cover portion 25 for storing the
At the position higher than the collar of the mounting hole 7, the sealing step portion 2 is provided.
6a and a seal-type mount screw hole 26 having a hole 6a.

A member indicated by reference numeral 27 is a vehicle door switch S which is attached to the vehicle body side mounting portion 2 in the striker portion of the vehicle.
8 is a mounting screw for fixing to 8. When the mounting screw 27 is tightened with a screwdriver or the like, its neck 27a crushes the sealing step 26a, and further the neck 2
7 a contacts the collar of the mounting hole 7. This allows
The vehicle door switch S is mounted on the vehicle body side mounting portion 28, and at the same time, the vehicle door switch S is grounded to the body via the vehicle body side mounting portion 28, and the seal step portion 26a
, A watertight structure is formed.

In the vehicle door switch S having the above-described structure, by fitting the male connector concave portion 3 with the female connector 30, the terminal 20 projecting into the male connector concave portion 3 can be connected to various terminals via the terminal 31 of the female connector 30. Control circuit 3
2, 33, a room lamp 34, etc., and a grounding terminal 2 protruding from the male connector recess 3.
9 is to be grounded via the terminal 35 of the female connector 30. Therefore, the body ground of the vehicle door switch S is achieved not only by fastening the mounting screw 27 to the vehicle body side mounting portion 28 but also by
This is also achieved by connecting the ground terminal 29 to the terminal 35 of the female connector 30, so that an extremely reliable body ground can be obtained. FIG. 3 shows this state by an electric circuit diagram.

Next, the operation of the vehicle door switch S having the above configuration will be described. In the vehicle door switch S configured as described above, when the vehicle door is opened, the push rod 12 projects in the direction of arrow B shown in FIG. At this time, the tongue-sliding contact ends 22a and 22b are in contact with both the fixed-side electrode 21 and the ground-side electrode plate 8, respectively. Is derived. When the vehicle door switch S is closed, the push rod 12 moves in the direction of arrow A shown in FIG. 1 against the elastic force of the coil spring 14 when the vehicle door is closed. At this time, the tongue-sliding contact end 22a of the movable-side electrode 22 is separated from the fixed-side electrode 21, whereby the vehicle door switch S is turned off.
The state becomes the F state.

[0019]

As described above, the vehicle door switch according to the present invention includes a switch case having a switch sliding chamber, a switch slider slidably disposed in the switch sliding chamber, A metal bracket having a mounting hole with which the mount screw comes into contact when the mount screw is tightened to the vehicle body side mounting portion while being insert molded into the switch case, and the movable electrode provided on the switch slider is provided with the movable electrode. A vehicle door switch that performs a switch operation by coming into contact with and separating from a fixed-side electrode provided on an inner wall of a switch sliding chamber, an earth-side electrode plate provided on an inner wall of the switch sliding chamber and slidably contacting the movable electrode, Since the grounding terminal and the grounding terminal protruding from the male connector recess adjacent to the sliding chamber are formed integrally with the bracket, the reliability of the body grounding is improved. It can be significantly improved.

Further, since the grounding terminal is provided at an intermediate position between the mounting hole and the grounding side electrode plate, the width of the vehicle door switch can be particularly reduced, and therefore, the grounding switch is provided near the door striker. Can be easily installed.

Further, since the terminal of the fixed electrode is protruded into the male connector recess together with the grounding terminal, body grounding can be performed simultaneously by fitting the female connector into the male connector recess. Can be.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a vehicle door switch according to the present invention.

FIG. 2 is a perspective view of the bracket shown in FIG. 1;

FIG. 3 is an electric circuit diagram when a female connector is fitted to the connector shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Switch case 2 Switch sliding chamber 3 Male connector concave part 4 Flange part 5 Bracket 6 Rubber cover winding edge 7 Mounting hole 8 Earth side electrode plate 10 Switch slider 12 Push rod 13 Bottom cover member 14 Coil spring 20 Terminal 21 Fixed Side electrode 22 Movable side electrode 22a, 22b Tongue sliding end 23 Rubber cover 24 Seal lip

Claims (3)

[Claims] A switch case (1) having a switch sliding chamber (2), a switch slider (10) slidably disposed in the switch sliding chamber (2), and the switch case (1). A metal bracket (5) having a mounting hole (7) with which the mounting screw (27) comes into contact when the mounting screw (27) is tightened to the vehicle body-side mounting portion (28) by insert molding into 1). A door switch for a vehicle, wherein a movable-side electrode (22) provided on the switch slider (10) comes into contact with and separates from a fixed-side electrode (21) provided on an inner wall of the switch sliding chamber (2) to perform a switch operation; An earth-side electrode plate (8) provided on the inner wall of the switch sliding chamber (2) and slidably contacting the movable-side electrode (22);
A door switch for a vehicle, wherein a ground terminal (29) protruding from a male connector recess (3) provided adjacent to the switch sliding chamber (2) is formed integrally with the bracket (5). 2. The vehicle door switch according to claim 1, wherein the ground terminal is provided at an intermediate position between the mount hole and the ground-side electrode plate. . 3. The terminal (20) of the fixed-side electrode (21), together with the grounding terminal (29), protrudes into the male connector recess (3). 2. The vehicle door switch according to 2.