JPH0581919U - Switch device - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a compact switch device with good operability. A wafer 2 having an opening 1, and a contact portion 5 built in the wafer 2 and composed of a fixed contact 3 and a movable contact 4.
And the movable contact 4 provided so as to be able to move in and out of the opening 1.
In the switch device having the key top 6 for pressing, the key top 6 is provided with a storage portion 6a for storing a part of the contact portion 5 in a state where the key top 6 presses the movable contact 4. [Effect] It can be used as a switch portion of various switches, and switch modularization can be achieved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a switch device that is pressed by an external operating force to perform switching.

[0002]

[Prior Art]

 In this type of switch device, a wafer with a built-in contact portion that conducts with a terminal is attached with a lid equipped with a key top, and is assembled as a unit. As described in the official gazette, a torsion coil spring is used for the movable contact, and this torsion coil spring is brought into contact with the fixed contact for conduction, and the key force is positioned by the elastic force of the torsion coil spring. It is proposed to be configured as follows. In this conventional switch device, for example, when the keytop is pressed, it moves in the ON direction according to the pressing force, and when the pressing is released, it is automatically returned to the initial position by the elastic force of the torsion coil spring.

[0003]

[Problems to be solved by the device]

 By the way, in the conventional switch device described above, when it is attempted to set a large movement stroke of the keytop in order to obtain good operability, the space required for moving the keytop is not the space required for installing the contact portion. Since it needs to be installed separately, there is a problem that miniaturization is difficult.

The present invention has been made in view of the actual situation in the related art, and an object thereof is to provide a switch device which is compact and has good operability.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is provided with a wafer having an opening, a contact portion including a fixed contact and a movable contact built in the wafer, and an opening / closing member for pressing the movable contact. In a switch device that has a key top that operates, and presses the key top to perform a switching operation of the contact portion, a storage portion that allows the contact portion to enter is provided in the key top. A part of the contact portion is housed in the housing portion when the movable contact comes into contact with the fixed contact.

[0006]

[Action]

 Since the present invention is configured as described above, when the key top is in the initial position, the movable contact is separated from the fixed contact, so that the contact portion is in the switch-off state, and then when the key top is pressed, The contacts come into contact with the fixed contacts, the contacts are switched on to establish electrical continuity between the external terminals, and part of the contacts is housed in the housing of the key top. After that, when the pressed state of the key top is released, the key top returns to the initial position, the contact part returns to the switch-off state, and part of the contact part is separated from the storage part of the key top. As a result, by arranging a part of the contact portion in the space required for moving the key top, the space can be effectively utilized, and a compact and easy-to-operate switch device can be obtained.

[0007]

【Example】

 Hereinafter, an embodiment of the switch device of the present invention will be described with reference to the drawings. 1 is a sectional view showing a first embodiment of a switch device of the present invention, FIG. 2 is another sectional view showing the switch device of FIG. 1, and FIG. 3 is a switch device of FIG. FIG. 4 is a plan view showing a state, FIG. 4 is a perspective view showing a state where a key top and a part of a wafer are removed from the switch device of FIG. 1, and FIG. 5 is a state in which a key top provided in the switch device of FIG. 1 is pressed. FIG. 6 is another cross-sectional view showing a state in which a key top provided in the switch device of FIG. 1 is pressed.

The switch device of this embodiment shown in FIG. 1 includes a wafer 2 made of synthetic resin and having an opening 1, a contact portion 5 built in the wafer 2 and made up of a fixed contact 3 and a movable contact 4, and A key top 6 which is provided so as to be able to move in and out of the opening 1 and presses the movable contact 4, and, as shown in FIG. 2, a pair of external terminals 7 and 8 connected to the fixed contact 3 and the movable contact 4, respectively. And have.

The fixed contact 3 described above is integrally formed of a metal plate material having elasticity, and as shown in FIG. 2, a bottom portion 3a fixed to one of the external terminals 7 by caulking or spot welding. , And a clip portion 3b capable of elastically holding the movable contact 4. The movable contact 4 described above is integrally formed of a metal plate material having elasticity, is connected to the other external terminal 8, and is provided with an arm portion 4a arranged so as to surround the fixed contact 3, and this arm portion 4a. And an engaging portion 4b which is elastically supported through the engaging portion 4b and which engages with the clip portion 3a. The above-mentioned key top 6 is formed of an insulating material such as synthetic resin, and as shown in FIG. 5, a part of the contact portion 5, for example, the fixed contact 3 of the movable contact 4 is pressed by the key top 6 as shown in FIG. A storage portion 6a capable of storing the upper portion and a contact portion 6b that constantly contacts the engagement portion 4b of the movable contact 4 are provided.

In the first embodiment, when no external force is applied to the key top 6, as shown in FIGS. 1 and 2, the elastic force of the movable contact 4 pushes the key top 6 itself. Since the movable contact 4 is raised, the engaging portion 4b of the movable contact 4 is separated from the clip portion 3b of the fixed contact 3 and is held in the switch-off state. Next, when the key top 6 is pushed downward in FIG. 1, the engaging portion 4b of the movable contact 4 abutting against the abutting portion 6b of the key top 6 is pushed down, and as shown in FIGS. The arm 4a is elastically deformed. At this time, the engaging portion 4b is engaged with the clip portion 3b to be switched on, the engaging portion 4b is held in the connected state, and the upper portion of the fixed contact 3 enters the accommodating portion 6a. Will be stored in After that, when the pressed state of the key top 6 is released, the key top 6 is pushed up by the elastic force of the movable contact 4 itself and returns to the initial position shown in FIGS. 1 and 2. At this time, the engaging portion 4b is separated from the clip portion 3b to be in a switch-off state, and the clip portion 3b is retracted and separated from the storage portion 6a.

In the first embodiment configured as described above, the upper portion of the fixed contact 3 is arranged in the space required for the movement of the key top 6, so that the space can be effectively utilized, so that the key top 6 The moving stroke can be set to a large value to ensure good operability and to be compact. Therefore, it can be used as a switch portion of various switches, and switch modularization can be achieved. Further, in the present embodiment, since the movable contact 4 is formed of the elastic metal plate material, the thickness dimension can be set smaller than the case where the torsion coil spring is used, and the size can be made more compact. Can be achieved.

FIG. 7 is a sectional view showing a second embodiment of the switch device of the present invention, FIG. 8 is another sectional view showing the switch device of FIG. 7, and FIG. 9 is a switch device of FIG. FIG. 10 is a perspective view showing a state in which the key top and a part of the wafer are removed from the switch device of FIG. 1, and FIG. 11 is a view showing a state in which the switch device of FIG. 7 is provided. It is a perspective view of the key top which is used.

The switch device of this embodiment shown in FIG. 7 includes a wafer 11 made of synthetic resin and having an opening 10, a contact portion 14 built in the wafer 11 and made up of a fixed contact 12 and a movable contact 13, and A key top 15 that is provided so as to be able to move in and out of the opening 10 and presses the movable contact 13, a holding body 16 that is mounted on the upper portion of the wafer 11 and holds the key top 15, the fixed contact 12 and the movable contact. 13 has a pair of external terminals 17 and 18 connected to each.

Similarly to the first embodiment described above, the fixed contact 12 described above is integrally formed of an elastic metal plate material, and as shown in FIG. 8, is caulked to one of the external terminals 17. It comprises a bottom portion 12a fixed by spot welding or the like, and a clip portion 12b capable of elastically holding the movable contact 13. The movable contact 13 described above is integrally formed of an elastic metal plate material, and as shown in FIG. 7, is connected to the other external terminal 18 and has an arm portion 13a bent in an S shape. An engaging portion 13b elastically supported via the arm portion 13a and engaged with the clip portion 12b. The key top 15 described above is made of an insulating material such as synthetic resin, and as shown by the slanted lines in FIG. 7, a part of the contact portion 14, for example, the movable contact 13 is pressed by the key top 15 while pressing the movable contact 13. A storage portion 15a capable of storing the upper portion and the upper portion of the fixed contact 12 and a contact portion 15b which is always in contact with the upper portion of the arm portion 13a of the movable contact 13 are provided. The key top 15 is rotatable about a shaft portion 15c, and the shaft portion 15c is rotatably supported by a bearing portion 11a of the wafer 11 shown in FIG.

Even in the second embodiment, when no external force is applied to the key top 15, as shown by the solid line in FIG. 7, the key top 15 is pushed up by the elastic force of the movable contact 13 itself. Therefore, the engaging portion 13b of the movable contact 13 is separated from the clip portion 12b of the fixed contact 12 and is kept in the switch-off state. Next, when the key top 15 is pressed downward or to the right in FIG. 7, the key top 15 rotates in the clockwise direction in FIG. 7 about the shaft portion 15c, so that the movable contact 13 that abuts the abutting portion 15b. When the arm portion 13a is pushed down, the arm portion 13a is elastically deformed as shown by the diagonal lines in FIG. At this time, the engaging portion 13b engages with the clip portion 12b to switch on, the engaging portion 13b is held in the connected state, and the upper portion of the movable contact 13 and the upper portion of the clip portion 12b are stored. It is invaded and stored in the portion 15a. After that, when the pressed state of the key top 15 is released, the elastic force of the movable contact 13 itself pushes up the key top 15 and returns to the initial position shown by the solid line in FIG. At this time, the engaging portion 13b is separated from the clip portion 12b to be switched off, and the upper portion of the movable contact 13 and the upper portion of the fixed contact 12 are retracted and separated from the storage portion 15a.

Also in the second embodiment configured as described above, it is possible to obtain the same effect as that of the first embodiment described above.

[0017]

[Effect of the device]

 Since the present invention is configured as described above, by arranging a part of the contact portion in the space required for moving the key top, the space can be effectively utilized, and a compact and easy-to-operate switch device is obtained. be able to.

[Brief description of drawings]

1 is a sectional view showing a first embodiment of a switch device of the present invention.

FIG. 2 is another cross-sectional view showing the switch device of FIG.

3 is a plan view showing a state in which a key top is removed from the switch device of FIG.

4 is a perspective view showing a state in which a key top and a part of a wafer are removed from the switch device of FIG.

5 is a cross-sectional view showing a state in which a key top included in the switch device of FIG. 1 is pressed.

6 is another cross-sectional view showing a state in which a key top provided in the switch device of FIG. 1 is pressed.

FIG. 7 is a sectional view showing a second embodiment of the switch device of the present invention.

8 is another cross-sectional view showing the switch device of FIG.

9 is a plan view showing a state in which a key top and a holder are removed from the switch device of FIG.

10 is a perspective view showing a state in which a key top and a part of a wafer are removed from the switch device of FIG.

FIG. 11 is a perspective view of a key top included in the switch device of FIG.

[Explanation of symbols]

 1 Opening 2 Wafer 3 Fixed Contact 4 Movable Contact 5 Contact Point 6 Key Top 6a Storage Section 7, 8 External Terminal 10 Opening 11 Wafer 12 Fixed Contact 13 Moving Contact 14 Contact Point 15 Key Top 15a Storage Section 17, 18 External Terminal

Claims (1)

[Scope of utility model registration request] 1. A wafer having an opening, a contact portion including a fixed contact and a movable contact built in the wafer, and a key top that is provided in and out of the opening and presses the movable contact. In the switch device for performing the switching operation of the contact portion by pressing the key top, the key top is provided with an accommodating portion that allows the contact portion to enter, and the movable contact comes into contact with the fixed contact. At this time, the switch device is configured such that a part of the contact portion is housed in the housing portion.