JPH1186662A - Switching device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switching device with high productivity by suppressing the coating spots for waterproofness to a minimum required level. SOLUTION: A reinforcing sidewall 25 of a rubber contact material 24 is pressurized and sandwiched between an insulator 11, fitted in a switch body 2 and a printed circuit board 27 by thread fastening a fastening screw 39. The part of the printed circuit board 27 which is surrounded with the reinforcing sidewall 25 of the rubber contact member 24 is sealed watertightly, the circuit contact parts to be bridged with a rubber contact 21 or 22 can be prevented from a short circuit due to penetration of rain water, etc. Moreover, both of soldered part 30 of a terminal 29 of a relay 28 and a soldered part 33 of a terminal 32 of an integrated circuit element 31 are surrounded with a contact point forming plane 24a of the rubber contact material 24 and the reinforcing side wall 25 in the surface of the printed circuit board 27, so that no coating for waterproofness needs to be formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch device provided with a waterproof measure.

[0002]

2. Description of the Related Art For example, a power window switch device is
Coating was applied to the mounting surface of the printed circuit board on which the electric circuit components and electronic elements were mounted, and the soldered portion to take waterproof measures.

[0003]

However, in the case described above, there are problems that not only productivity is low but also cost is high because there are many waterproof coating portions. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a switch device in which the number of waterproof coating portions is minimized to enhance productivity.

[0004]

According to the present invention, there is provided a switch device, comprising: a printed circuit board on which a terminal of an electric circuit component or an electronic circuit element mounted on a back surface is soldered by protruding a terminal on a surface; A rubber contact member forming a rubber contact is overlapped, the soldered portion is surrounded by the rubber contact member, and a switch body having a switch mechanism for pressing and operating the rubber contact is fastened to the printed circuit board. The rubber contact member is pressed and held between the printed circuit board and the switch body.

[0005]

According to the switch device having the above-mentioned structure, the rubber contact member surrounding the soldered portion of the terminal of the electric circuit component or the electronic circuit element is pressed and held between the switch body and the printed circuit board. Since waterproofing measures have been taken, there is no need to apply a waterproof coating to the soldered parts of the terminals of electrical circuit components and electronic elements, etc., which reduces the number of coating points and increases the productivity of switch devices and reduces production costs. be able to.

[0006]

Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a sectional view of a power window master switch device (hereinafter simply referred to as a switch device) 1, and FIG. 2 is a plan view of a rubber contact member 24. Switch device 1
Is mounted on the armrest of the driver's door. As shown in FIG. 1, a switch body 2 with a switch mounted therein incorporates a window lock switch mechanism 3, an automatic power window switch mechanism 4 for a driver's seat door, and a power window switch mechanism 5 for a rear door on the driver's seat side. On the upper surface of the switch body 2, operation knobs 6 to 8 of the switch mechanisms 3 to 5 are arranged. On the front side of each of the switch mechanisms 3 to 5, a power window switch mechanism for a front door and a rear door, which is opposite to the driver's seat (not shown), is incorporated.

The switch body 2 includes an insulator 1
1 is fitted. The insulator 11 has a hole 12
Boss portion 13 for fastening screw formed on switch body 2
Are inserted, and pusher guides 15 and 16 formed on the switch body 2 are disposed in the holes 14 for operating rubber contacts. Further, fixed contacts 17, 18 of the power window switch mechanism 5 are mounted. The auto power window switch mechanism 4 alternately pushes down the pushers 19 and 20 guided by the pusher guides 15 and 16 by the swinging operation knob 7, and performs switching by the push momentary type rubber contacts 21 and 22. . In addition, the power window switch mechanism 5 allows the movable contact 23 to be fixed to the fixed contact 1 by the operation knob 8 that is oscillated.
Switching is performed by switching between 7 and 18.

As shown in FIG. 2, the rubber contact member 24 surrounds the periphery of the rubber contact forming surface 24a with a reinforcing side wall 25, and has an auto power window switch mechanism 4 at a corner.
The four rubber contacts 21, 21a, 22, 22a are arranged. An insertion hole 26 through which the boss 13 for the fastening screw formed in the switch body 2 is inserted is formed. A reinforcing side wall 25 is also formed around the insertion hole 26. The rubber contact member 24 is connected to the printed circuit board 2.
7 on a predetermined position.

The printed circuit board 27 has a casing 28a of a relay 28, which is an electric circuit component, closely mounted on the back surface thereof, and its terminals 29 are protruded from the surface and soldered. The soldered portion 30 is surrounded by the rubber contact forming surface 24a and the reinforcing side wall 25. Similarly, an integrated circuit element 31 for controlling the operation of a power window motor (not shown) is mounted on the back surface of the printed circuit board 27 by operating the auto power window switch mechanism 4 and the power window switch mechanism 5. The terminal 32 is soldered so that it protrudes from the surface. The soldered portion 33 is also surrounded by the rubber contact forming surface 24a and the reinforcing side wall 25. A waterproof coating 34 is applied between the integrated circuit element 31 and the printed circuit board 27.

On the printed circuit board 27, a female connector 36 to which a terminal board 35 connected to a printed circuit is connected is mounted by mounting screws 37 and mounted on the switch body 2. Then, the lower surface of the switch body 2 is closed by the back cover 38.
The back cover 38 is fixed by a fastening screw 39 which is screwed into a boss 13 for a fastening screw formed on the switch body 2.
By tightening the fastening screw 39, the rubber contact member 24 has its reinforcing side wall 25 pressed and clamped between the insulator 11 fitted to the switch body 2 and the printed circuit board 27.

When pressed and clamped as described above, the portion of the printed circuit board 27 surrounded by the reinforcing side wall 25 of the rubber contact member 24 is sealed in a watertight manner,
There is no short circuit caused by rainwater or the like entering a circuit contact portion (not shown) bridged by 1, 21a or 22, 22a. Also, the soldered portion 30 of the terminal 29 of the relay 28
And the soldered portion 33 of the terminal 32 of the integrated circuit element 31
Are the rubber contact members 2 on the surface of the printed circuit board 27.
Since the contact-forming surface 24a and the reinforcing side wall 25 are water-tightly surrounded, there is no need to apply a waterproof coating. Therefore, the number of coating portions is reduced, thereby increasing the productivity of the switch device and reducing the production cost. Since the casing 28a of the relay 28 and the printed circuit board 27 are in close contact with each other and are hardly flooded, it is not necessary to apply a waterproof coating to this portion.

[Brief description of the drawings]

FIG. 1 is a sectional view of a switch device.

FIG. 2 is a plan view of the rubber contact member 24. FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Switch apparatus 2 ... Switch body 3 ... Door lock switch mechanism 4 ... Auto power window switch mechanism 5 ... Power window switch mechanism 21,21a, 22,22a ... Rubber contact 24 ... Rubber contact member 24a ... Rubber contact forming surface 25 ... Reinforced side wall 27 ... Printed circuit board 28 ... Relay 29,32 ... Terminal 30,33 ... Soldering part 31. .. Integrated circuit element 39 ... Fastening screw

Claims (1)

[Claims] 1. A rubber contact member having a rubber contact is superimposed on a printed circuit board on which a terminal of an electric circuit component or an electronic circuit element mounted on a back surface is soldered by protruding from a surface, and the soldered portion is attached to the printed circuit board. A switch body which is surrounded by a rubber contact member and has a switch mechanism for pressing and operating the rubber contact is fastened to the printed circuit board, and the rubber contact member is pressed between the printed circuit board and the switch body. A switch device characterized by being worn.