JPH0650197U - Switch device - Google Patents

Abstract

(57) [Abstract] [Purpose] Minimize the high-pitched noise that occurs when the movable contact plate slides on the fixed contacts. [Structure] A contact holder 6 is movably arranged on a cover 2 of a switch case 1. The movable contact plate 6 is attached to the contact holder 6 via the compression coil spring 10,
It is arranged so as to be in pressure contact with the fixed contacts 5a, 5b, 5c fixed to the base 3. Contact holder 6
The operation portion 6a at the upper part of the is inserted into the guide hole 4 and the operation knob 7 is fixed to the tip portion. The movable contact plate 6 is bent in a U shape, and the copper plates 8b, 8 are sandwiched by the resin layer 8a.
It has a three-layer structure in which b is attached from both sides. The contact holder 6 is moved to move the movable contact plate 6 to the fixed contact 5a,
Even if a high frequency vibration is received while sliding on 5b and 5c, the vibration is absorbed by the resin layer 8a, so that the generation of high-pitched noise can be suppressed as much as possible.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a switch device that moves and contacts a fixed contact by moving a movable contact plate.

[0002]

[Prior art]

 An example of this type of switch device is a wiper switch provided in the driver's seat of an automobile. This product consists of a contact holder that is movably installed in the switch case by operating the operation knob, a movable contact plate that is attached so as to move integrally with this contact holder, and fixed contacts that are fixed to the base. The movable contact plate is in pressure contact with the fixed contact by a compression coil spring or the like.

In this wiper switch, when the operation knob is moved, the movable contact plate is moved integrally with the contact holder. As a result, the movable contact plate comes into contact with and separates from the fixed contact while sliding, and the electrical contact state between the fixed contact and the movable contact plate can be switched.

[0004]

[Problems to be solved by the device]

 In such a wiper switch, when the movable contact plate is moved by the operation of moving the operation knob, the movable contact plate is vibrated at a high frequency by sliding in a pressure contact state with, for example, a rivet as a fixed contact. May generate high pitched noise. In this case, since the movable contact plate is usually made of a conductive material such as a copper plate, it has been unavoidable that such abnormal noise is generated to some extent. However, the user feels that the generation of such a high-pitched noise is a very unpleasant sound, and preventing the generation of such a noise is an issue.

The present invention has been made in view of the above circumstances, and an object thereof is to suppress and use a high-pitched noise generated by vibration of a movable contact plate when the movable contact plate and a fixed contact come into contact with each other. An object of the present invention is to provide a switch device that does not cause discomfort to the user.

[0006]

[Means for Solving the Problems]

 According to the present invention, a switch case provided with a fixed contact, a contact holder movably provided on the switch case, a contact holder supported by the contact holder so as to move integrally with the contact holder, and the contact holder is fixed with the movement. The present invention is directed to a switch device including a movable contact plate that contacts and separates contacts, and the movable contact plate is a metal plate having conductivity that is provided on a side that contacts and separates the fixed contact. It is characterized by being configured with a vibration absorbing member integrally provided on the back side thereof.

[0007]

[Action]

 According to the switch device of the present invention, when the contact holder is moved, the movable contact plate moves and comes into contact with and separates from the fixed contact, and the metal plate of the movable contact plate causes the fixed contact to move. The conduction state between them is switched. When the movable contact plate comes into contact with the fixed contact, vibration may be applied to the movable contact plate due to sliding. In that case, the vibration is absorbed by the vibration absorbing member provided on the back side of the movable contact plate. As a result, the generation of high-pitched noise is suppressed.

[0008]

【Example】

 An embodiment in which the present invention is applied to a slide switch device will be described below with reference to the drawings. That is, FIG. 1 shows a vertical side surface of the entire structure. The switch case 1 is composed of a switch cover 2 having an open lower surface and an insulator 3 provided so as to close the lower surface of the switch cover 2. There is. A guide hole 4 extending in the left-right direction in the drawing is formed on the upper surface of the switch cover 2. Then, three fixed contacts 5a, 5b, 5c are fixed to the insulator 3 so that hemispherical contact portions project from the surface thereof. The contact holder 6 is formed so that the operation portion 6a is protruded at the upper portion, and in a state where the operation portion 6a is inserted into the guide hole 4 of the switch cover 2, the contact holder 6 extends in the left-right direction in the drawing along the guide hole 4. Is disposed in the switch case 2 so as to be movable. An operation knob 7 is attached to the operation portion 6a of the contact holder 6.

As shown in FIG. 2, the movable contact plate 8 is integrally formed by sandwiching thin copper plates 8b, 8b from both sides of a resin layer 8a having elasticity as a vibration absorbing member. In addition, as shown in the drawing, it is bent and formed so as to have a U-shaped cross section. The movable contact plate 8 is attached so that the engaging holes 9, 9 formed on both sides are engaged with the engaging protrusions 6b, 6b formed on the side surface of the contact holder 6. A recess 6c is formed on the lower surface side of the contact holder 6, and a compression coil spring 10 is interposed between the movable contact plate 8 and the lower surface side of the contact holder 6. The movable contact plate 8 is urged downward by the compression coil spring 10 to be in pressure contact with the fixed contact 5a, 5b or 5c.

With such a configuration, when the operation knob 7 is moved in the left-right direction in FIG. 1, the contact holder 6 is moved in the left-right direction. Along with this, the movable contact plate 8 which is positioned so as to establish conduction between the fixed contacts 5a and 5b is moved while sliding on the fixed contacts 5a, 5b and 5c, and the fixed contacts 5b and 5c are moved. It becomes conductive. At this time, the movable contact plate 8 may be vibrated at a high frequency when sliding on the fixed contacts 5b and 5c, but since the resin layer 8a of the movable contact plate 8 absorbs the vibration, High-pitched noise will not be generated when sliding, and the user will not feel discomfort.

According to this embodiment, since the movable contact plate 8 has the structure in which the resin layer 8a is sandwiched between the copper plates 8b and 8b, the contact holder 6 is moved to the fixed contacts 5a, 5b and 5c. When moving while sliding, even if a high frequency vibration is received from the fixed contacts 5a, 5b, 5c, the vibration can be absorbed by the resin layer 8a, so that a high-pitched noise is generated. Can be suppressed, and the user will not feel uncomfortable.

Although the movable contact plate 8 has a three-layer structure in which the resin layer 8a is sandwiched between the copper plates 8b and 8b from both sides in the above embodiment, the present invention is not limited to this, and the copper plate is formed only from the lower surface side. It may have a two-layer structure in which 8b is attached. Further, in the above embodiment, the resin layer 8b is used as the vibration absorbing member, but the present invention is not limited to this, and an elastic body such as rubber may be used. Further, in the above embodiment, the case where the present invention is applied to the slide switch in which the movable contact plate slides while contacting with the fixed contact has been described, but the present invention is not limited to this, and, for example, a facing contact type switch device. It may also be applied to a movable contact plate of a seesaw-type switch device.

[0013]

[Effect of device]

 As described above, according to the switch device of the present invention, the movable contact plate includes the conductive metal plate provided on the side contacting with the fixed contact and the vibration absorbing member integrally provided on the back side thereof. With this structure, when the movable contact plate slides on the fixed contact due to the movement, the vibration applied to the movable contact plate is absorbed by the elastic member, which prevents the movable contact plate from generating high-pitched noise. It has an excellent effect that it can be suppressed as much as possible.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of an essential part showing an embodiment of the present invention.

FIG. 2 is a sectional view of a movable contact plate.

[Explanation of symbols]

1 is a main body case, 2 is a switch case, 3 is an insulator, 5a, 5b and 5c are fixed contacts, 6 is a contact holder, 8 is a movable contact plate, 8a is a resin layer (vibration absorbing member), and 8b is a copper plate (metal plate). ) 10 is a compression coil spring.

Claims (1)

[Scope of utility model registration request] 1. A switch case provided with a fixed contact, a contact holder movably provided in the switch case, and a contact holder supported by the contact holder so as to move integrally with the switch holder, and the fixed case according to the movement. In a switch device provided with a movable contact plate that comes into contact with and separates from a contact, the movable contact plate is provided integrally with a conductive metal plate provided on a side that comes into contact with and separates from the fixed contact and a back side thereof. A switch device comprising: