JPS5823143Y2 - Switch body of small electrical equipment - Google Patents

Description

[Detailed description of the invention] This invention relates to a switch body for small electric appliances such as electric shavers and portable lights, and in particular, a mounting board for attaching the switch body to the main body and a contact board are provided in a simple structure. The present invention is characterized in that it simplifies assembly into the above-mentioned equipment.

Examples of this invention will be described below with reference to the drawings.

Figure 1 is an exploded perspective view of the switch body A. 1 is a synthetic resin mounting board for fixing the switch body A to the main body case B, and a round bar-shaped fitting protrusion 2 stands on its top surface. A switch moderation portion 3 is formed on the side portion, and a cylindrical boss 4 is formed on one end of the lower surface.

Reference numeral 5 denotes a contact board in which contacts 5a are arranged on a printed circuit board, and a hole 6 that fits into the fitting protrusion 2 of the mounting board 1 is bored.

5b is a terminal extending from the contact 5a.

Reference numeral 7 denotes a contact plate, for example a leaf spring, which is placed so as to slide on the contact base plate 4 to open and close the contact 5a. Collaborate by doing.

A resistance element 11 having lead wires 10 at both ends is a screw 9 for fixing the mounting board 1 to the main body case B.

To assemble the switch body A having the above configuration into the main body case B, first fit the fitting protrusion 2 of the mounting board 1 into the hole 6 of the contact board 5, and put the mounting board 1 and the contact board 5 in a stacked state. Eliminate rattling in the left and right direction.

Next, as shown in FIG. 2, the resistance element 9 is supported by the cylindrical boss 4 on the lower surface of the mounting board 1, and the lead wire 10 is soldered to the terminal 5b of the contact board 5.

At this time, if the contact board 5 is soldered diagonally upward, the fitting between the fitting protrusion 2 and the hole 6 will be biased to one side, and there will be no movement in the left and right direction, and there may be a wobble in the vertical direction. It can also be held down.

In this way, the mounting board 1 and the contact board 5 are easily temporarily assembled,
Place this so that it contacts the contact 5a of the contact board 5 over the leaf spring 7 of the operation knob 8 that is slidably placed on the main body case B, and screw the screw 11 into the cylindrical boss 4 of the mounting board 1, and then screw the screw 11 into the cylindrical boss 4 of the mounting board 1. Fixed to.

In the above embodiment, the contact board 5 was temporarily assembled to the mounting board 1 using the resistive element 9 for controlling the load.
It is possible to temporarily assemble any electrical element having at least two terminal lead wires, such as a capacitor element for noise cancellation between the terminals A or a diode element for rectification.

Furthermore, in the above embodiments, the boss for supporting the element is made into a cylindrical shape, but it can be changed as appropriate to a square prism, a triangular prism, etc.

As described above, according to this invention, the fitting protrusion 2 is provided on the upper surface of the mounting board 1, and the contact board 5 in which the hole 6 that fits into the fitting protrusion 2 is formed is stacked on the mounting board. The supporting boss 4 on the lower surface of the mounting board 1 supports an electric element that restricts movement in the left and right direction and has a plurality of terminals such as a resistor element 9 or a capacitor element between the terminals 5b of the contact board 5. The vertical movement of the contact board 5 is restricted by fixing the contact board 5 across the lower surface of the mounting board with the terminal, and the contact board 5 is temporarily assembled to the mounting board 1, and the main body case B is fixed. The contacts 5a of the temporarily assembled contact board 5 are mounted on the contact plate 7 of the operation knob 8 which is slidably placed on the contact plate 7.
Since the mounting board 1 is fixed to the main body case B so that it is in contact with the main body case B, it can be fixed to the main body case B in a simple process.
Moreover, since the contact board 5 is fixed to the mounting board in both the vertical and horizontal directions without wobbling, the contact state can be maintained accurately at all times.
This is particularly effective for switch bodies that are assembled from small parts such as.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view of a switch body implementing this invention.
FIG. 2 is a sectional view of a main part of the same embodiment, and FIG. 3 is an assembly explanatory diagram of the same embodiment. 1... Mounting board, 2... Fitting protrusion, 4
...Cylindrical boss, 5...Contact board, 5a
...Contact, 5b...Terminal, 6...
... Hole, 7 ... Contact plate, 8 ... Operation knob, 9 ... Resistance element, B ... Main body case.

Claims (1)

[Scope of utility model registration request] A fitting projection 2 is provided on the upper surface of the mounting board 1, and a contact board 5 having a hole 6 that fits into the fitting projection 2 is stacked on the mounting board 1 to restrict movement in the left and right direction. The contact board 5
An electrical element having a plurality of terminals, such as a resistive element 9 or a capacitor element, is held between the terminals 5b of the mounting board 1 so that it is supported by the supporting boss 4 on the lower surface of the mounting board 1. The vertical movement of the contact board 5 is restricted by fixing it across the lower surface, and the contact board 5 is temporarily assembled to the mounting board 1, and the operation knob slidably placed on the main body case B is Mount the mounting board 1 so that the contacts 5a of the temporarily assembled contact board 5 come into contact with the contact plate 7 of 8.
A switch body for a small electric device, characterized in that the switch body is fixed to a main body case B.