JP2004139764A - Switch device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a switching device used mainly for a door opening and closing detection for an automobile with a compact size and a stable operation. <P>SOLUTION: Down-sizing and a stabilized operation are achieved by structuring the switching device by placing a pressing unit 24 with a pressing body 22 protruded in free up-and-down movement with a load larger than an operating load of an operating body 13 in opposition to a push switch 17 to have the pressing body 22 press-operating the operating body 13 of the switch. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a switch device mainly used for detecting opening / closing of a door of an automobile.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a switch device is mounted between an automobile door and a vehicle body side, thereby detecting opening / closing of the door, and controlling turning on / off of lighting in a vehicle compartment, door lock, and the like. I have.
[0003]
Such a conventional switch device will be described with reference to FIGS.
FIG. 6 is a cross-sectional view of a conventional switch device. In FIG. 6, reference numeral 1 denotes a box-shaped insulating resin case having an open upper surface. A plurality of fixed contacts 2 are implanted.
[0004]
Reference numeral 3 denotes an operation body housed in the case 1 so as to be movable up and down. A substantially U-shaped movable contact 4 having both ends elastically contacting the fixed contact 2 is mounted on the lower surface of the operation body 3. At the same time, the operation section 3 </ b> A at the upper end protrudes from the opening of the case 1.
[0005]
Reference numeral 5 denotes a coil spring, and reference numeral 6 denotes a cover made of an insulating resin. The cover 6 covers an opening on the upper surface of the case 1 and the coil spring 5 is slightly bent between the inner bottom surface of the case 1 and the lower surface of the operating body 3. The push switch 7 is configured by being mounted in an erected state and urging the operating body 3 upward.
[0006]
Reference numeral 8 denotes a mounting plate made of a steel plate on the vehicle body side, reference numeral 9 denotes a pressing plate mounted on the door of the vehicle, and the push switch 7 is mounted on the mounting plate 8 in a posture in which the operation unit 3A protrudes toward the door. When the door is opened and closed, the pressing plate 9 is disposed so as to press the operation unit 3A, and the end of the fixed contact 2 is projected outward from the case 1 so that the vehicle is closed. Are connected to a room light or the like via an electronic circuit (not shown) of the present invention, and the respective components are arranged as described above to constitute a switch device.
[0007]
In the above configuration, when the door of the vehicle is closed, as shown in the cross-sectional view of FIG. 7, the operating portion 3A is pressed by the pressing plate 9, and the operating body 3 moves downward while flexing the coil spring 5. Then, since the movable contact 4 attached to the operating body 3 is separated from the fixed contact 2, the interior light is turned off.
[0008]
When the door is opened, the pressing plate 9 separates from the operating section 3A, and the operating body 3 urged by the coil spring 5 moves upward, and as shown in FIG. Are elastically contacted with the fixed contact 2 and the plurality of fixed contacts 2 are electrically connected via the movable contact 4, so that the interior light is turned on.
[0009]
In the switch device configured as described above, there were some variations in the dimensions of the individual components, displacement of the switch on the mounting plate 8 on the vehicle body side, and misalignment with the pressing plate 9 on the door side. As shown in FIG. 7, a gap L is formed between the inner bottom surface of the case 1 and the lower surface of the operation body 3 even when the switch is pressed, so that the push switch 7 can be reliably electrically connected and separated. Was to be configured.
[0010]
As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
[0011]
[Patent Document 1]
JP-A-10-50164
[Problems to be solved by the invention]
However, in the above-mentioned conventional switch device, a gap L is provided between the inner bottom surface of the case 1 and the lower surface of the operation body 3 for reliable operation of the push switch 7, and accordingly, the protruding operation portion 3A is also long. As a result, the entire switch becomes large, and a part of the occupant's body or luggage hits the protruding operation unit 3A when getting on or off the car, and the operation unit 3A is likely to be broken or damaged. there were.
[0013]
The present invention has been made to solve such a conventional problem, and an object thereof is to provide a switch device that can be downsized, can prevent the operation body from being broken or damaged, and can operate stably. I do.
[0014]
[Means for Solving the Problems]
In order to achieve the above object, the present invention has the following configuration.
The invention according to claim 1 of the present invention is characterized in that a pressing unit in which a pressing body protrudes movably up and down with a load larger than an operation load of an operating body of a push switch is opposed to the push switch, and the switch is operated by the pressing body. The switch device is configured to perform a pressing operation on the body, and after a predetermined amount of pressing operation of the switch is performed by the pressing unit, the pressing body moves up and down so that the switch can be reliably operated. Therefore, there is an effect that an extra gap L is not originally required, the size can be reduced, and a switch device with stable operation can be obtained.
[0015]
According to a second aspect of the present invention, in the first aspect of the invention, the tip of the operating body or the tip of the pressing body is formed in a substantially hemispherical shape. Even if it occurs, the switch can be operated reliably.
[0016]
According to a third aspect of the present invention, in the first aspect of the present invention, the pressing body is arranged so as to be swingable in the operation direction, and a large amount of center deviation or inclination occurs between the operating body and the pressing body. Even in this case, there is an effect that a reliable operation of the switch can be obtained.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 5.
Note that components having the same functions as those of the switch device described in the section of the related art are denoted by the same reference numerals, and detailed description thereof will be omitted.
(Embodiment)
FIG. 1 is a cross-sectional view of a switch device according to an embodiment of the present invention. In FIG. 1, reference numeral 11 denotes a box-shaped insulating resin case having an open upper surface. A plurality of fixed contacts 12 projecting outward are implanted.
[0018]
Reference numeral 13 denotes an operation body housed in the case 11 so as to be vertically movable. On the lower surface of the operation body 13, a substantially U-shaped movable contact 4 whose both ends are in elastic contact with the fixed contact 12 is mounted. The operation section 13A at the upper end protrudes from the opening of the case 11.
[0019]
Reference numeral 5 denotes a coil spring, and reference numeral 6 denotes a cover made of an insulating resin. The cover 6 covers an opening on the upper surface of the case 11, and the coil spring 5 is slightly bent between the inner bottom surface of the case 11 and the lower surface of the operation body 13. The push switch 17 is configured by being mounted in an erected state and urging the operation body 13 upward.
[0020]
Reference numeral 21 denotes a box-shaped frame made of insulating resin, 22 denotes a pressing member housed in the frame 21 so as to be vertically movable, and a coil spring is provided between the inner bottom surface of the frame 21 and the back surface of the pressing member 22. The pressure unit 23 is mounted in a slightly bent state, and the pressing body 22 is urged and protruded downward with a load larger than the operation load of the operation body 13 to constitute a pressing unit 24.
[0021]
Reference numeral 8 denotes a mounting plate made of a steel plate on the vehicle body side, 25 denotes a chassis of the vehicle door, and the push switch 17 is mounted on the mounting plate 8 by protruding the operation unit 13A toward the door. The end of the fixed contact 12, which is mounted on the door chassis 25 so that the pressing body 22 faces the operation unit 13A and protrudes outward from the push switch 17, is connected via an electronic circuit (not shown) of the automobile. Connected to an interior light or the like to form a switch device.
[0022]
In the above configuration, when the door of the vehicle is closed, the pressing body 22 protrudes with a load larger than the operation load of the operation body 13 as shown in the cross-sectional view of FIG. Is pressed, the operating body 13 moves downward while bending the coil spring 5, and the movable contact 4 attached to the operating body 13 is separated from the fixed contact 12, so that the interior light is turned off.
[0023]
Then, after a predetermined amount of pressing operation in which the movable contact 4 separates from the fixed contact 12 is performed, and the lower surface of the operating body 13 abuts against the inner bottom surface of the case 11, as shown in the sectional view of FIG. The coil spring 23 moves upward while flexing and presses the operation unit 13A with a larger load, and the door of the vehicle is completely closed while the switch is reliably operated.
[0024]
When the door is opened, the pressing body 22 separates from the operating section 13A, and the operating body 13 biased by the coil spring 5 moves upward, and as shown in FIG. Since the plurality of fixed contacts 12 are in elastic contact with the fixed contacts 12 and are electrically connected via the movable contacts 4, the interior light is turned on.
[0025]
As described above, according to the present embodiment, the pressing unit 24 in which the pressing body 22 protrudes movably up and down with a load larger than the operating load of the operating body 13 is opposed to the push switch 17, and the pressing body 22 operates the switch. By configuring the switch device so as to press the body 13, when the operating body 13 of the push switch 17 and the pressing body 22 of the pressing unit 24 come into contact with each other, first, the push switch 17 by the pressing unit 24 is pressed. Is performed (i.e., electrical contact / separation operation by retreating the operating body 13), and thereafter, the pressing body 22 moves up and down, so that the push switch 17 can be reliably operated. Therefore, a gap between the inner bottom surface of the case 11 and the lower surface of the operation body 13 and the length of the operation section 13A are not required. As a result, the amount of protrusion of the operation unit 13A can be reduced, so that the push switch 17 can be reduced in size. The operation unit 13A is prevented from being broken or damaged, and the reliability is improved. As described above, the push switch 17 can be downsized, and a switch device with improved reliability and stable operation can be obtained.
[0026]
Further, as shown in the side view of FIG. 4, by forming the distal end of the operating body 13 and the distal end of the pressing body 22 into a substantially hemispherical shape, as shown in FIG. 4B, even if the center between the operating body 13 and the pressing body 22 slightly shifts or tilts as shown in FIG. Can be reliably pressed, and the switch 17 can be operated reliably.
[0027]
Further, as shown in the side view of FIG. 5, the pressing body 27 can swing not in the vertical direction but in the operating direction with respect to the fulcrum 28 so that the operating body as shown in FIG. The switch 17 is not limited to a state where the center of the switch 13 is aligned with the center of the pressing body 27, as shown in FIGS. 5 (b) and 5 (c). It can be operated reliably.
[0028]
The vertical direction in which the operating body 13 protrudes is not necessarily limited to the direction along the gravity, but is substantially the direction in which the push switch 17 and the pressing unit 24 are opposed to each other. The present invention can of course be applied to a case where are disposed opposite to each other in a lateral direction such as left and right, or a case where they are disposed along a linear direction along an oblique direction.
[0029]
Further, in the present invention, the case where the switch device is provided on the door and the vehicle body of the vehicle has been described. However, the present invention is not limited to this. It is needless to say that the present invention can also be used for the operation of detecting the position and the state of the camera.
[0030]
【The invention's effect】
As described above, according to the present invention, a push switch in which electrical contact and separation is performed by the vertical movement of the operating body, and a pressing unit in which the pressing body protrudes in the vertical movement operation with a load larger than the operating load of the operating body Are opposed to each other, and the operating body is pressed by the pressing body, so that when the pressing body of the pressing unit comes into contact with the operating body of the push switch, the operating body first retreats and the electrical The contact and separation are reliably performed, and thereafter, the pressing body retreats, so that a switch device with stable operation can be obtained, and the maximum moving amount of the operating body can be reduced, thereby reducing the amount of protrusion of the operating body. The possibility that the operating body is broken or damaged can be reduced to a minimum, and the reliability is improved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a switch device according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the switch device at an early stage of a pressing operation. FIG. (A) and (b) are side views of a switch device according to another embodiment of the present invention. [FIG. 5] (a) to (c) are side views according to other embodiments of the present invention, respectively. 6 is a cross-sectional view of a conventional switch device. FIG. 7 is a cross-sectional view of the conventional switch device at the time of pressing operation.
Reference Signs List 4 movable contact 5 coil spring 6 cover 8 mounting plate 11 case 12 fixed contact 13 operating body 13A operating section 17 push switch 21 frame 22, 27 pressing body 23 coil spring 24 pressing unit 25 chassis 28 fulcrum

Claims (3)

A push switch in which the operating body protrudes up and down with a predetermined load, and an electrical connection and disconnection is performed by the up and down movement of the operating body, and a pressing body protrudes up and down with a load larger than the operating load of the operating body A switch device comprising: a pressing unit configured to face the push switch and press the operating body by the pressing body. 2. The switch device according to claim 1, wherein the tip of the operating body or the tip of the pressing body is formed in a substantially hemispherical shape. 2. The switch device according to claim 1, wherein the pressing body is arranged to be swingable in the operation direction.

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