JPS587554Y2 - Switch contact structure - Google Patents

Description

[Detailed Description of the Invention] The present invention includes, for example, DIP (Dual In-One P
The present invention relates to the structure of a contactor applied to an ackage type rotary switch, etc.

FIG. 4 shows a conventionally known rotary switch, in which 41 is a switch case, 42 is a plurality of fixed terminals arranged in two rows along the longitudinal direction of the switch case 41,
Reference numeral 43 denotes an operator that is rotationally driven.

Inside the switch case 11, a plurality of contact parts (movable contact pieces) 44 shown in FIG. 5 are provided.

This contact part is provided on the base 45, and this base 4
5 has a cylindrical movable part 46 located between the contact parts 44.
is rotatably provided.

A plurality of protrusions 47 are provided on the outer surface of the movable portion 46 in correspondence with the contact portions 44 .

Further, the movable portion 46 is connected to the operator 43 and is configured to rotate together with the operator 43.

As the movable part 46 rotates, the contact part 44 is pushed outward by the free riser 47, and the contact part 44 and the inner end of the switch case 41 of the fixed terminal 42, which is disposed apart from the contact part 44 by a predetermined distance, are brought into contact with each other. Being contacted.

By the way, as shown in FIG. 6, the contact portion 44 is formed by insert-molding the center portion of a thin metal plate 63, in which the free ends of the plurality of contact portions 44 are bridged by bridging portions 61, 62, into the base body 45. The bridging portions 61 and 62 are cut and then bent into a predetermined shape to serve as the contact portion 44.

Therefore, the contact portions 44 are each separated to form a single contact circuit, which is inconvenient when changing the switch circuit characteristics, for example.

That is, in order to connect two or more contact parts into the same conduction circuit, such as connecting the contact parts 44a and 44b to form a common conduction circuit, lead wires are used to connect these contact parts to the outside. Wiring is required, which increases the number of parts and assembly man-hours, and also increases costs.

In order to eliminate the conventionally known drawbacks described in L below, the present invention has been developed by inserting a contactor in which a group of contact parts are bridged by a bridge part into a base body provided with an opening part. The bridging portion was exposed through the opening of the base body, and the bridging portion was cut as necessary to form contacts constituting the same conductive circuit.

The present invention will be described below with reference to the accompanying drawings.

The attached drawings show one embodiment of the present invention, and FIG. 1 is an assembled plan view showing the contactor inserted into the base during the manufacturing process, FIG. 2 is a completed assembled plan view, and FIG. FIG.

In the accompanying drawings, 1 is a base and 2 is a contact.

The base body 1 is made of resin material and has a vertical rectangular opening 1-
1 is formed and configured to insert the contact laterally.

The contactor 2 is made of a thin plate with spring properties and has a rectangular shape, and in the manufacturing process, an arbitrary number of punching grooves 2-1 of the first block and punching grooves of the second block are formed on the plane as shown in the first figure. A groove 2-1' is provided, and the remainder of the punched groove 21 of the first block forms a first block contact group 2-2 shown in the second figure,
The remaining part of the punched groove 2-1' of the second block forms a second block contact portion group 2-2'.

A bridge is formed at the boundary between the punched part 2-1 and the first block contact part group 2-2 of the first block and the punched groove 2-1' and the second block contact part group 2-2' of the second block. A portion 2-3 is formed, and the free ends of the punched portion 21 of the first block and the first block contact portion group 2-2 are bridged by a bridging portion 2-4, and the punched portion 21 of the second block is formed. ' and the free ends of the second block contacting part group 2-2' are bridged by a bridging part 2-4'.

In manufacturing the present invention, the contact 2 is inserted into the base 1 and molded as shown in the first figure.
The bridging portion 2-3 is positioned so as to be exposed in the opening 1-1 of the base body 1.

After insert molding, the bridge parts 2-4 and 2-4' are cut and removed, and the first block contact part group 2-4 is removed as shown in the second figure.
2 and the second block contact portion group 2-2' remain.

The first block contact portion group 2-2 and the second block contact portion group 2-2' are used for contacting and separating from a movable contact piece (not shown), and the bridge portion 2-3 is appropriately cut. By doing so, the necessary circuit is constructed, which will be explained with reference to FIG.

Note that FIG. 3 is a cross-sectional side view taken along the line AA' in FIG. 2.

The circuit configuration shown in FIG.
-2 contact parts a, l), c and second block contact part group 2-
The contact parts a' and l)' of 2' are the same conduction circuit, and the first
The contact parts d, e of the block contact part group 2-2 and the contact parts c', d', e' of the second block contact part group 2-2' are made into the same conduction circuit, and the first block contact part group 2 In order to make the contact parts f, g, h of -2 and the contact parts f', g', h' of the second block contact part group 2-2' the same conductive circuit, the bridge part 2-3 is cut. A punching groove 2-13 belonging to the punching groove 2-1 of the first block and a punching groove 2-12' belonging to the punching groove 2-1' of the second block are cut diagonally at the point 2-31.
The necessary circuit was constructed by connecting the punched grooves 2-15 and 2-15' by cutting straight at the cutting point 2-32.

As described above, in this invention, the necessary circuit can be constructed by simply cutting the bridge portion exposed in the opening of the base body as necessary, so the structure is simple and unnecessary. This has the effect of not requiring additional parts and reducing costs.

[Brief explanation of drawings]

The attached drawings show one embodiment of the present invention, and FIG. 1 is an assembled plan view showing the state in which the contactor is inserted into the base during the manufacturing process, FIG. 4 is a side view showing a well-known rotary switch, FIG. 5 is a perspective view showing the contact mechanism of FIG. 4, and FIG. 6 is a contact of a conventional switch. FIG. 3 is a plan view showing the structure. 1...Base, 1-1...Opening, 2.
...Contactor, 21...Punching groove of the first block, 2-1'...Punching groove of the second block, 2
-2...First block contact part group, 22'...
...Second block contact part group, 2-3.2-4.2-4
'...Bridge part, 2-31.2-32...
- Cutting point, a, l), cd, e, f, g, h, a', b
', c', d', e', f', g'h'...Contact portion.

Claims (1)

[Scope of utility model registration request] It consists of a base body provided with an opening and an arbitrary number of contact parts, and has a bridging part that bridges the contact parts together at the center,
Insert molding is performed so that the bridge part is exposed through the opening of the base body and the contact part group is exposed to the outside of the base body, and the bridge part is cut through the opening part as necessary to form a conductive circuit. A contact structure for a switch, characterized in that the contact structure includes a contact structure.