JPS6131464Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a terminal structure for various switches in which a desired number of connection terminals are implanted on a board, one end of which constitutes the contact plate of the switch, and the other end of which matches an external coupler. be.

Conventionally, the terminal structure of this type of switch has been such that a plurality of connection terminals are inserted and held on a single board, and one end of the connection terminals is mounted and fixed. However, it is troublesome to simultaneously hold the insert of the connection terminal and place and fix one end of the connection terminal on a single board during molding. In other words, gaps (hereinafter referred to as "air gaps") must also be formed at the mutually spaced positions of the contact plates, making it difficult to mold the single substrate.

Conventionally, a connecting terminal is constructed of two parts, a terminal part body and a contact part part, and one part is molded and supported on a single board, and then the other part is crimped, and a joining method such as soldering is used. However, it is troublesome to join the two parts, and there is a risk that the joint may become loose and cause problems.

In the present invention, the switch board is divided into a first board and a second board.
By configuring the device by combining two parts with the substrate, the above-mentioned drawbacks of the conventional device can be solved.

Hereinafter, the terminal structure of a rotary switch as a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a first board, and connection terminals 2, 3, 4,
The midsections of 5, 6 and 7 are supported by mold,
The material is, for example, a thermoplastic resin with excellent moldability.

One end of each connection terminal 2, 3, 4, 5, 6, and 7 is arranged in a configuration to match the external connection coupler 19, and the other end of each connection terminal 2, 3, 4, 5, and 7 is bent. The contact plates 2a, 3a, 4a, 5a and 7a are integrally formed.

8 is a second board, which matches the first board 1 and penetrates downwardly through one end of each connection terminal 2, 3, 4, 5, 6, and 7, and is made of, for example, thermosetting material. Arc-resistant resin.

Further, the second board 8 has the contact plate 2 on its upper part.
a, 3a, 4a, and 5a are mounted and fixed, and the tips of each of the contact plates 2a, 3a, 4a, and 5a are penetrated and locked from above, and the contact plate 2
The first substrate 1 is fixed to the plate by slightly bending the tips of a, 3a, 4a, and 5a.

The contact plate 7a is mounted and fixed on the upper part of the first substrate 1, and the other end of the connection terminal 6 is inserted into the locking hole 8a of the second substrate 8 and locked therein.

Reference numeral 8e denotes a guide, which is formed to protrude below the second board 8 and guides the attachment of the connection coupler 19 and regulates the direction of attachment.

Reference numeral 9 denotes a contact plate, and after inserting the bent piece 9a at the center into the locking hole 8a, it is connected to the other end of the connection terminal 6 by soldering or the like, and the bent pieces 9 at both ends are connected to the other end of the connecting terminal 6 by soldering or the like.
By locking b and 9c to the second board 8, it is placed and fixed on the upper part of the second board 8.

The contact plates 2a, 3a, 4a, 5a, 7a and 9 are arranged on a plane, respectively, and the contact plates 2a, 3
a, 4a, 5a and 9 are arranged in a ring around the contact plate 7a.

A gap 8b forming an air gap is provided in the upper part of the second substrate 8 at mutual intervals between the contact plates 5a, 2a, 3a, 4a and 9.
The contact plate 7a and the annularly arranged contact plates 5a, 2a,
3a, 4a, 9 and the second substrate 8 at mutual spacing
There is a gap 8c forming an air gap in the upper part of the
are provided, and each of the air gaps constitutes a switch contact capable of withstanding energization of a large capacity load.

Note that the air gap 8b forming the former air gap
As shown in FIG. 5, contact plates 5a, 2a, 3a,
The gap width A is set so that 4a or 9 projects slightly inward from the opening edge 8d.

Reference numeral 10 denotes a switch case, which is attached to the periphery of the second board 8 to clamp and fix the first board 1, and includes a rotor 12 that can be rotated by an operation knob 11.

13 and 14 are movable contact plates, and contact plates 2a,
3a, 4a, 5a, 7a, and 9, and is attached below the rotor 12 via springs 15, 16 so as to be in sliding contact with them.

The movable contact plates 13 and 14 use the contact plate 7a as a common contact plate, and selectively bridge and connect the contact plates 5a, 2a, 3a, 4a, or 9 according to the rotational displacement of the rotor 12, A rotary connection is configured.

17 is a stay ball and spring 1
The rotor 12 is elastically mounted on the upper part of the rotor 12 via the rotor 12, and is sequentially press-fitted and engaged with the moderation ridge 10a of the switch case 10 according to the rotational displacement of the rotor 12, thereby forming a moderation mechanism of the rotary switch.

The means for fixing the first board 1 is not limited to the method of clamping the second board 8 and the switch case 10, but may be fixed to the second board 8 or the switch case 10 by heat welding, caulking, adhesive, etc. Optional.

According to the above configuration, after the connection terminals 2, 3, 4, 5, 6, and 7 are molded and supported on the first substrate 1, the second substrate 8 is molded into a single unit.
By matching the first and second substrates 8, the first substrate and the second substrate 8 constitute an integrated terminal substrate.

In addition, the rotor 1 based on the rotation of the operation knob 11
Of course, the rotation of the connector 2 opens and closes various electric circuits (not shown) connected to the connection coupler 19.

The present invention has the following effects.

Since one end of the connection terminal, that is, the contact plate, is mounted and fixed by a second substrate different from the first substrate that mold-supports the connection terminal, stable arrangement between the contact plates and reliable setting of the air gap can be achieved.

Separate molding of the first substrate and the second substrate is simple.

Since the first substrate does not mount and fix the switching contact plate, the first substrate can be easily formed of thermoplastic resin with excellent moldability.

[Brief explanation of the drawing]

The drawings show preferred embodiments of the terminal structure of a switch according to the present invention, and FIG. 1 is a longitudinal cross-sectional view of a rotary switch equipped with the terminal structure of a switch according to the present invention, and FIG. 3 is a sectional view taken along the line B--B in FIG. 1, FIG. 4 is a plan view of the first substrate, and FIG. 5 is an enlarged sectional view of the gap in the second substrate. 1...First substrate, 2, 3, 4, 5, 6, 7...
Connection terminals, 2a, 3a, 4a, 5a, 7a, 9...
...Contact plate, 8...Second substrate, 8b, 8c...Gap.

Claims (1)

[Scope of utility model registration request] In the terminal structure of a switch, a desired number of connection terminals, one end of which constitutes the contact plate of the switch and the other end of which matches an external coupler, are implanted on a board provided at the bottom of the switch case. 1. A terminal structure for a switch, comprising a first substrate that supports an insert and is provided with a contact plate, and a second substrate that matches the first substrate and on which one end of a connecting terminal is placed and fixed.