JPH0538498Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a push switch suitable for a stop switch used in a vehicle such as an automobile and for turning on or off a stop lamp in conjunction with brake operation.

[Prior Art] An example of a conventional push switch is shown in FIG. This push switch consists of a cylindrical case a with a bottom, a movable contact b accommodated in the case a and biased by a spring toward the opening side, a pressing means c for moving the movable contact, and a case a. a fixed contact d provided in the open opening of the movable contact so as to be able to come into contact with the movable contact;
A coupler terminal e is provided outside the case a and electrically connected to a fixed contact d. In addition,
The fixed contact d is attached to one end of the connecting conductor f, and the other end of the connecting conductor f passes through a hole formed in the axial direction into the case a and connects to a coupler attached to the bottom outer surface of the case a. The terminal e and the connection part g are caulked and soldered.

[Problems to be solved by the invention] By the way, in the case of the push switch having the above structure, since separate fixed contacts d, coupler terminals e, and connecting conductor parts f are required, the number of parts is relatively large, and the number of connecting parts is large. The caulking and soldering work in step g also requires relatively much effort.

Therefore, an object of the present invention is to provide a push switch that can reduce the number of parts and the number of work steps.

[Means for Solving the Problems] In order to solve the above problems, the push switch according to the present invention has one end of the coupler terminal integrally extending along the outer surface of the resin case to the case opening. A fixed contact is formed at the end of the connecting conductor on the case opening side, and an arm extending along the outer surface of the case is formed integrally with the coupler case in order to attach the coupler case to the case. It is characterized by a connecting conductor section sandwiched between the arm and the outer surface of the case.

[Function of the invention] The push switch according to the invention has a connection conductor part that extends integrally from one end of the coupler terminal and extends along the outer surface of the case to the case opening. When the fixed terminal is formed on the mouth end, the fixed terminal and the coupler terminal are electrically connected via the connecting conductor, and the conventional crimping and soldering steps are omitted.

Furthermore, since the connecting conductor part is sandwiched between the outer surface of the resin case and the arms of the resin coupler case, the connecting conductor part is fixed and insulated at the same time as the coupler case is attached to the case.

[Embodiment] FIGS. 1 and 2 show an embodiment of a push switch configured as a stop switch for a vehicle. FIG. 1 shows a longitudinal section, and FIG. 2 shows the developed state of each component.

This push switch has a movable contact 3 biased by a return spring 2 toward the opening thereof, housed inside a bottomed cylindrical case 1 made of hard resin such as phenol. Also,
First and second fixed contacts 4 and 5 are provided on the opening of the case 1 in the moving direction of the movable contact 3 so as to be able to contact the movable contact 3. The first and second fixed contacts 4 and 5 are attached to one ends of the connecting conductor parts 6 and 7 which are bent into a substantially U-shaped cross section, and the connecting conductor parts 6 and 7 are respectively attached to the outer surface of the case 1. The first and second coupler terminals 8 are attached to sandwich this, and the other ends are continuous and integrally formed.
and 9. These first and second coupler terminals 8 and 9 protrude through through holes 11 (see FIG. 2) into the space inside a resin coupler case 10 that is connected and attached to the bottom of the case 1. .

On the other hand, as shown in FIG. 2, grooves 1a for accommodating these are formed in the portion of the case 1 where the connecting conductors 6 and 7 are attached. A possible arm 12 is integrally formed extending from the coupler case 10. The tip 13 of the arm 12 forms a protrusion projecting outward, and a recess 14 is formed on the outer surface of the arm 12 on the coupler case 10 side from the tip 13.
Therefore, each arm 12 corresponds to each groove 1a of the case 1.
The outer surfaces of the connecting conductor parts 6 and 7 are pressed against the case 1 side by fitting inward.

Also, around the tip of the arm 12, there is a case 1.
The opening end of the metal cap 15 attached to cover the open opening of the cap 15 is placed over the open end of the metal cap 15, and the cap 15, the case 1, and the coupler are crimped in the vicinity of the tip 13 in the direction of arrow A in FIG. The three parts of the case 10 are integrated, and at the same time, the connecting conductor parts 6 and 7 are also fixed onto the case 1 in a non-removable manner.

In addition, cap 1 covers the opening part of case 1.
A cylindrical mounting boss 16 with a male thread formed on the outer periphery is attached to the center of the bottom of the shaft 1, which is an example of a pressing means, housed in the hollow part of the mounting boss 16.
One end of 7 protrudes into the opening of case 1 so that movable contact 3 can be pressed against return spring 18. The shaft 17 is always urged in a direction outward from the case 1 by a return spring 18.

Next, the operation of this push switch will be explained. In the state shown in FIG. 1, when the brake pedal (not shown) is depressed, the shaft 17 is returned from the pushed-in position by the return spring 18.
When the first and second fixed contacts 4 and 5 come into contact with the movable contact 3, they are electrically connected, and a stop lamp (not shown) is lit. After that, when the brake pedal is released, it contacts the shaft 17 and pushes it in the direction of arrow B in the figure against the return spring 18, so that the tip of the shaft 17 pushes the movable contact 3 against the return spring 2. move it,
The contact with the first and second fixed contacts 4 and 5 is cut off.
As a result, the stop light goes out.

In this way, in this embodiment, the connecting conductor parts 6 and 7 provided with the first and second fixed contacts 4 and 5 are
are formed continuously and integrally with the first and second coupler terminals 8 and 9, respectively, so it is possible to omit the caulking and soldering process for connecting each connecting conductor part and the coupler terminals, and in this point, the number of parts can be reduced. In addition, the number of work steps can be reduced. Moreover, the arm 12 for attaching the coupler case 10 to the case 1 can simultaneously fix and insulate the connecting conductors 6 and 7, thereby facilitating the assembly of the push switch.

In particular, since a stop switch requires a large current, thermoplastic resin cannot be used, and it is difficult to attach the connecting conductors 6 and 7 directly to the outer surface of the case 1 using an engaging structure. By doing so, the connecting conductor parts 6 and 7 can be easily and reliably positioned and fixed to the outer surface of the case 1 made of a hard material.

Note that the present invention is not limited to the above-mentioned embodiments; for example, when forming a larger number of circuits, the number of connecting conductor parts 6 and 7 or the first and second coupler terminals 8 and 9 may be increased. is free.

[Effects of the invention] The push switch according to the invention has a connecting conductor part that extends integrally from one end side of the coupler terminal and extends along the outer surface of the case to the case opening opening, and the connecting conductor part is connected to the case opening side. Since a fixed contact is formed at the end, it can be attached as before,
Moreover, there is no need to provide a connection conductor for connecting the coupler terminal separately from the coupler terminal. Therefore, the number of parts can be reduced, and the crimping and soldering processes between the connecting conductor and the coupler terminal can be reduced.

Furthermore, since the connecting conductor part is sandwiched between the arms of the resin coupler case as well as the outer surface of the resin case, the connecting conductor part can be fixed and insulated using the attachment of the coupler case to the case.

As a result, the push switch can be easily manufactured.

[Brief explanation of the drawing]

1 and 2 show an embodiment, with FIG. 1 being a longitudinal sectional view and FIG. 2 being a developed perspective view. FIG. 3 is a longitudinal sectional view of a conventional example. Explanation of symbols, 1...Case, 3...Movable contact,
4...First fixed contact, 5...Second fixed contact, 6,
7... Connection conductor portion, 8... First coupler terminal, 9...
...Second coupler terminal, 10...Coupler case, 17
...shaft.

Claims (1)

[Scope of utility model registration request] A bottomed cylindrical resin case, a movable contact housed in the case and biased by a spring toward the opening side,
A pressing means for moving the movable contact, a fixed contact provided at the opening of the case so as to be able to come into contact with the movable contact, a resin coupler case attached to the bottom side of the case, and a coupler case housed in the coupler case. and a push switch equipped with a coupler terminal electrically connected to a fixed contact, wherein one end side of the coupler terminal is a connecting conductor portion extending integrally along the outer surface of the case to the case opening; The fixed contact is formed at the end of the connecting conductor on the case opening side, and an arm extending along the outer surface of the case is formed integrally with the coupler case in order to attach the coupler case to the case. A push switch characterized by a connecting conductor sandwiched between the sides.