JPH0668265U - Changeover switch - Google Patents

Abstract

(57) [Summary] [Purpose] By consolidating the components and functions, the number of parts is reduced and workability and assembly are improved. [Structure] The base 1 and the lid 2 are each formed of a resin material, and the two are bonded by ultrasonic welding to form a switch case 3. The base 1 is provided with a plurality of fixed contacts 5 on its inner wall surface. The switch case 3 is provided with a movable platen 8 which is rotated by an operation lever 12. The movable board 8 includes a movable contact 9 that is in sliding contact with the plurality of fixed contacts 5. The base 1 is integrally formed with a mounting seat 1e for fixing the base 1 to the disposition place 6 with screws.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to various changeover switches such as a rotary switch, and more particularly to a switch in which constituent parts are integrated.

[0002]

[Prior art]

 Conventionally, a movable plate provided with movable contacts is rotated by an operation lever, and contacts are switched by sliding contact with a base plate provided with fixed contacts. There are technologies related to the publication. This is a configuration in which the movable plate is placed in the space formed by screwing and fixing the base and the case, and a long hole is provided in the case in order to screw and fix the changeover switch to the location. .

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional technique, the base and the case are fixed by screwing, which results in a large number of parts for screwing and an increase in the number of assembling steps. Further, the case also had a function as a mounting seat for fixing the changeover switch, which was poor in workability. The present invention has been made in view of the above problems, and aims to reduce the number of parts, improve workability and assemblability, and lower the cost by consolidating the components and functions. And

[0004]

[Means for Solving the Problems]

 According to the present invention, in order to achieve the object, a base and a lid, each made of a resin material, constitute a switch case by ultrasonic welding, and a plurality of fixed contacts are arranged on an inner wall surface of the base. A movable plate that is rotated by an operation lever is disposed inside the switch case, the movable plate includes a movable contact that slides into the plurality of fixed contacts to perform a switch action, and the base is A changeover switch is characterized in that a mounting seat for fixing the base to the arrangement location by screwing is integrally formed.

[0005]

【Example】

 A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. This embodiment will be described as 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 traveling state.

Reference numeral 1 denotes a base, which is formed of a resin material in a substantially flat plate shape. Reference numeral 2 denotes a lid, which is made of a resin material and formed into a substantially thin frame shape. In the lid body 2, a peripheral edge portion 2a formed on the entire circumference of the lower surface is welded to a joint portion 1a on the upper surface of the base 1, and ultrasonically welded. Thus, the base 1 and the lid 2 constitute a switch case 3 having a sealed internal space. An "O" ring 4 is interposed between the base 1 and the lid 2 in order to enhance the sealing performance of the joint between the base 1 and the lid 2.

On the inner wall surface 1b of the base 1, as shown in FIGS. 3 and 4, a plurality of fixed contacts 5 are arranged by insert molding or the like on a concentric circle centered on the through hole 1c. Further, the base board 1 is integrally formed with a connector 1d as shown in FIG. The connector 1d is provided with terminals 5a which are electrically connected to the plurality of fixed contacts 5 and which are connected to external wiring. As shown in FIGS. 3 and 4, the base 1 is integrally formed with a mounting seat 1e which is fixed to a disposing portion 6 such as an automatic transmission with a screw. The mounting seat 1e is fixed with a penetrating metal ring 7 having a long hole, and is reinforced by screw fixing. Therefore, the changeover switch is fixed to the placement location 6 via the base 1.

Inside the switch case 3, a movable platen 8 is arranged as shown in FIG. That is, the lid body 2 integrally forms the first bearing portion 2b and the second bearing portion 2c on the same center as the through hole 1c of the base 1. The first bearing portion 2b rotatably supports the movable platen 8. The movable platen 8 is provided with a plurality of movable contacts 9 which are brought into sliding contact with the plurality of fixed contacts 5 to perform a switch action. The plurality of movable contacts 9 are biased toward the fixed contact point 5 side by the compression spring 10.

A second bearing portion 2c formed so as to penetrate through the inside of the first bearing portion 2b rotatably supports a rotary shaft 11 for an automatic transmission that penetrates through the base 1 and the lid 2. . The rotating shaft 11 is engaged in the switch case 3 by an engaging portion 11a so as to rotate together with the movable platen 8. Further, the rotary shaft 11 has an operation lever 12 fixed to the tip end thereof on the lid 2 side by screwing.

In the vicinity of the tip of the operation lever 12, a through hole 12a is formed as a reference setting portion that serves as an index at the operation reference point of the operation lever 12. Further, as shown in FIG. 3, a recessed hole 1f serving as a reference setting portion, which serves as an index at the operation reference point of the base 1, is formed on the upper surface of the base 1. Therefore, the operation reference point of the inhibitor switch corresponds to the neutral position where the operation lever 12 is at the N position shown in FIG. In this case, the index for each reference setting of the operating lever 12 and the base 1 is the N ₀ position. Therefore, by inserting a setting jig (not shown) into the recess 1f and the through hole 12a, the operating 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 fitted into the first bearing portion 2b with the inside of the lid body 2 facing upward, and the compression vane 10 and the movable contact 9 are mounted. Next, the base 1 is placed on the lid 2 and the two are joined by ultrasonic welding. After that, the rotary shaft 11 for the automatic transmission is fitted into the second bearing portion 2c, the operation lever 12 is attached, and the attachment seat 1e is screwed and fixed to the arrangement location 6.

[0012]

[Effect of device]

 As described above in detail, according to the configuration of the present invention, the fixed contacts and the mounting seats are centrally arranged on the base, and the lid simplifies the function of the lid of the switch case. By adopting a configuration in which the components are joined by ultrasonic welding, the components and functions can be centralized, the number of components is small, the workability and assemblability are improved, and the cost can be reduced.

[Brief description of 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.

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

FIG. 4 is an exploded cross-sectional view of the switch case shown in FIG.

5 is an enlarged cross-sectional view taken along line BB in FIG.

[Explanation of symbols]

 1 Base 1e Mounting Seat 2 Lid 3 Switch Case 5 Fixed Contact 6 Placement 8 Movable Plate 9 Movable Contact 12 Operation Lever

Claims (1)

[Scope of utility model registration request] 1. A base and a lid, each of which is made of a resin material, constitute a switch case by ultrasonic welding, a plurality of fixed contacts are arranged on an inner wall surface of the base, and an operating lever is rotated. A movable plate to be operated is disposed in the switch case, the movable plate is provided with a movable contact that performs a switch action by slidingly contacting the plurality of fixed contacts, and the base is screwed at a place where the base is arranged. A changeover switch characterized in that a mounting seat for fixing and fixing is integrally formed.