JPS5838506Y2 - deep switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a switch mechanism, particularly a tip switch.

An example of a DIP switch is as shown in FIG.

That is, a plurality of cams 2 each having a shaft 2a are inserted into a plurality of parallel grooves 1a of the case 1, a plurality of partition plates 3 are provided integrally, and a number of pairs of leaf springs are formed. A base 6 to which metal contact pieces 4 and 5 are fixed is inserted from below the case 1 to hold the cam 2 so that it can rotate around its shaft 2a.
It is assembled as shown in the sectional view in FIG.

By pressing one end of the cam 2, both the contact pieces 4.5 are separated from each other as shown in FIG.
, 5 are in contact with each other, that is, the switch can be switched to the on state.

When assembling such a conventional type switch, the contact pieces 4 and 5, which have been shaped in advance, are attached to the base 6.
After inserting it into notches 6a formed on both sides of the base plate and arranging it at a predetermined position, adhesive 7 is injected into the notch 6a to fix it, thereby forming a base on which contact pieces 4 and 5 are attached. , after inserting this into case 1 into which many cams 2 have been inserted, case 1
This was done by gluing the base 6 and the base 6 together.

However, in the conventional example of such a structure, in order to assemble extremely detailed parts, the work of arranging each contact piece one by one into the notch 6a of the base 6 is a very troublesome work. However, it requires a long working time and is inefficient, resulting in high costs.

Furthermore, it is difficult to accurately fix the contact piece in a predetermined correct position.

Furthermore, since each contact piece is fixed with adhesive, when soldering to each contact piece, the contact piece is heated, which may cause the adhesive that fixes the contact piece to melt, resulting in poor adhesion. When the adhesive melts, the flux used for soldering flows and covers the contact area of the contact piece, causing poor conductivity.

The present invention was developed with the aim of eliminating the above-mentioned drawbacks of the conventional DIP switch.The contact piece is fixed to the base plate by integral molding, and the base plate is simply attached to the case. The present invention provides a high-precision tip switch that can be easily assembled.

The specific structure of the DIP switch of the present invention will be explained below based on one embodiment shown in the drawings.

In Fig. 3, 11 is a case with a structure similar to the conventional one;
12 is a cam, and 13 is a partition plate, which has the role of separating each contact piece, and also has the role of holding down each cam 12 so that it can rotate around the shaft 12a, unlike the conventional example. Although it is similar to the partition plate 3 shown, it is not integrated with the base plate like the conventional example, but has a structure in which a number of partition plates are connected together by a connecting portion 13a.

This is to enable continuous integral molding of the contact piece and the base plate, as will be described later.

Reference numeral 16 denotes a base plate, to which a plurality of sets of contact pieces 14 and 15 are fixed by integral molding.

In the illustrated embodiment, one base plate 16a has the contact piece 14 fixed thereto, and the other base plate 16 has the contact piece 15 fixed thereon.
b are combined and bonded together with an adhesive such as epoxy resin to form an integrated base plate 16.

In addition, to form this base plate, as shown in Fig. 5, a predetermined number of contact pieces are used. For example, when forming a switch with 10 contacts, 10 long contact pieces are made of base material at regular intervals. The plate is molded from a synthetic resin material, and the contact piece material and the base plate are continuously integrated into one piece.

After this is cut at the positions indicated by the chain lines in FIG. 5, one portion of the base plate 16 described above is formed by simultaneously bending, shaping and pressing each contact piece material.

Next, the assembly of the dip switch having the above structure will be briefly described. First, the cam 12 is inserted from the bottom side of the case 11 so that one end of the cam 12 comes out from each groove 11a of the case 11.

After a predetermined number of cams have been inserted, the partition plate 13 is similarly inserted from the bottom side, and each cam is fixed between the case and the partition plate so that it can rotate.

Further, the base plate 16 shaped as described above is attached from the same direction and fixed to the case by means such as heat caulking to form a structure as shown in the sectional view in FIG. 4.

As explained above, the present invention allows the contact pieces and the base plate to be easily formed by integral molding, and by inserting and fixing this into the case, each contact piece can be placed in a predetermined position and in a predetermined state. It can be easily assembled without the troublesome work of gluing.

Furthermore, since the molding is continuous integral molding, this contact portion can be mass-produced.

Therefore, it helps reduce manufacturing costs.

In addition, since the contact piece is integrally molded to the base plate without using adhesive, there is no risk of the adhesive melting due to heat during soldering, etc., and there is no risk of flux entering the contact point. There is no risk of poor contact.

Although the embodiment shows a scene-type dip switch, it goes without saying that other dip switches such as a slide-type dip switch may also be used.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of a conventional dip switch, Fig. 2 is a sectional view thereof, Fig. 3 is an exploded perspective view of the present invention, Fig. 4 is a sectional view thereof, and Fig. 5 is a contact piece fixed to the base. FIG. 11...Case, 12...Cam, 13
...Partition plate, 14゜15...Touch piece, 1
6...Base.

Claims (1)

[Scope of utility model registration request] The case includes a case, a large number of cam switches arranged at intervals in the case, and a base provided with a plurality of partition plates and attached with pairs of contact pieces corresponding to the number of the cams. In a tip switch in which the cams are held so that they can rotate, the partition plate and the base are separated, the base is divided into two, and one of the pair of contact pieces is attached to each half of the base. A DIP switch characterized in that the base is formed by fixing the two parts together by continuous integral molding, and then joining them together to form the entire base.