JP2596725Y2 - Selector switch - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various changeover switches such as a rotary switch, and more particularly to a switch for integrating components.

[0002]

2. Description of the Related Art Conventionally, a so-called changeover switch in which a movable plate provided with a movable contact is rotated by an operation lever and slidably contacts a base provided with a fixed contact to switch the contact is, for example, a real switch. For example, there is a technique according to JP-A-170924. This configuration has a configuration in which a movable plate is disposed in a space formed by fixing a base and a case by screwing, and an elongated hole is provided in the case in order to fix and fix the changeover switch at a location where the movable switch is disposed.

[0003]

However, in the above-mentioned conventional technology, the base and the case are fixed by screws, so that the number of parts for screwing is large, and the factor of increasing the number of assembling steps is as follows. Become. Further, the case also has a function of a mounting seat for fixing the changeover switch, and is inferior in workability. The present invention was devised in view of the above problems, and aims to reduce the number of parts, improve workability and assemblability, and reduce the cost by consolidating the components and functions. I do.

[0004]

In order to achieve the object, the present invention provides a base and a thin plate each formed of a resin material.
The switch case by bonding ultrasonic welding between Jo lid
And a stepped joint and a
Around the edge of the lid that hangs down to fit
A plurality of fixed contacts are disposed on an inner wall surface of the base, and a movable plate pivotally operated by an operation lever is disposed in the switch case, and the movable plate slides on the plurality of fixed contacts. A movable contact that contacts and switches, and the base includes:
A changeover switch is characterized in that a mounting seat for fixing the base to a location by screwing is integrally formed.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings. The present embodiment will be described by way of an example applied to an inhibitor switch mounted on an automatic transmission for a vehicle and driven by operating a lever of the automatic transmission for setting a running state.

Reference numeral 1 denotes a base, which is formed of a resin material and has a substantially flat shape. Reference numeral 2 denotes a lid, which is formed of a resin material into a generally thin frame shape. The lid 2 has a peripheral portion 2a formed around the entire lower surface welded to a joint 1a on the upper surface of the base 1 and joined by ultrasonic welding. Thus, the base 1 and the lid 2 constitute a switch case 3 having a sealed internal space. In addition, between the base 1 and the lid 2,
An “O” ring 4 is interposed in order to enhance the sealing of the joint between the two.

As shown in FIGS. 3 and 4, on the inner wall surface 1b of the base 1, a plurality of fixed contacts 5 are arranged on a concentric circle centered on the through hole 1c by insert molding or the like. The base 1 integrally forms a connector 1d as shown in FIG. The connector 1d is provided with terminals 5a that are electrically connected to the plurality of fixed contacts 5 and are connected to external wiring. As shown in FIGS. 3 and 4, the base 1 is integrally formed with a mounting seat 1 e which is screwed and fixed to a location 6 such as an automatic transmission. The mounting seat 1e secures the penetrating elongated metal ring 7 and reinforces it by screwing. Therefore, the changeover switch is fixed to the arrangement location 6 via the base 1.

In the switch case 3, a movable board 8 is provided as shown in FIG. That is, the lid 2 is
The first bearing portion 2b and the second bearing
The bearing 2c is integrally formed. The first bearing 2b rotatably supports the movable platen 8 rotatably. The movable platen 8 includes a plurality of movable contacts 9 which slide on the plurality of fixed contacts 5 to perform a switching action. The movable contacts 9 are urged toward the fixed contact 5 by a compression spring 10.

A second bearing portion 2c penetrating inward of the first bearing portion 2b rotatably supports the automatic transmission rotating shaft 11 penetrating the base 1 and the lid 2. . The rotating shaft 11 is engaged by an engaging portion 11 a in the switch case 3 so as to rotate together with the movable plate 8. Further, the rotation shaft 11 has an operation lever 12 fixedly screwed to a tip end on the side of the lid 2.

In the vicinity of the tip of the operation lever 12, there is formed a through hole 12a as a reference setting portion which serves as an index at an operation reference point of the operation lever 12. In addition, base 1
As shown in FIG. 3, a concave hole 1f serving as an index at the operation reference point of the base 1 is formed on the upper surface of the base 1 as a reference setting portion. Thus, in the inhibitor switch, the operation reference point corresponds to the neutral position when the operation lever 12 is at the position N shown in FIG. In this case, an indication of the reference setting of the operating lever 12 and the base 1 is N ₀ position.
Therefore, the setting jig (not shown) is connected to the concave portion 1f and the through hole 1f.
By being inserted into 2a, the operation lever 12 and the base 1 automatically coincide with each other at the N position.

Next, an assembling procedure of the above configuration will be described. First, the movable platen 8 is placed on the first bearing 2
b, and the compression spring 10 and the movable contact 9 are mounted.
Next, the base 1 is put on the lid 2 and both are joined by ultrasonic welding. Thereafter, the rotation shaft 11 for the automatic transmission is fitted to the second bearing portion 2c, the operation lever 12 is mounted, and the mounting seat 1e is screwed and fixed to the arrangement location 6.

[0012]

According to the configuration of the present invention, as described in detail above, fixed contacts and mounting seats are intensively arranged on the base, and the lid body is simplified to the function of the switch case lid, and the base is provided with the same structure. And the lid are joined by ultrasonic welding, so that the components and functions can be integrated, the number of components is small, workability and assemblability are improved, and cost reduction can be achieved.

[Brief description of the drawings]

FIG. 1 is an assembly plan view showing an embodiment according to the present invention.

FIG. 2 is an enlarged sectional view taken along line AA of FIG. 1;

FIG. 3 is a plan view of the base shown in FIG. 2;

FIG. 4 is an exploded sectional view of the switch case shown in FIG. 2;

FIG. 5 is an enlarged sectional view taken along line BB in FIG. 3;

[Description of Signs] 1 Base 1e Mounting seat 2 Lid 3 Switch case 5 Fixed contact 6 Placement location 8 Movable platen 9 Movable contact 12 Operating lever

Claims (1)

(57) [Scope of request for utility model registration] 1. A base and a thin plate each made of a resin material
The switch case by bonding ultrasonic welding between Jo lid
And a stepped joint and a
Around the edge of the lid that hangs down to fit
A plurality of fixed contacts are disposed on an inner wall surface of the base, and a movable plate pivotally operated by an operation lever is disposed in the switch case. The movable plate slides on the plurality of fixed contacts. A changeover switch, comprising: a movable contact that contacts and performs a switching action; and wherein the base is integrally formed with a mounting seat for fixing the base to a place where the base is screwed.