JPH0727037U - Switch device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a switch device that can be easily automated by an assembly machine. [Constitution] The common terminal 14 is inserted into the terminal insertion hole 7 of the common terminal mounting portion 4 of the housing 1, and the fixed terminals 15 and 16 are inserted into the terminal insertion holes 9 and 10 of the fixed terminal mounting portions 5 and 6, respectively. The fulcrum receiving portion 25 of the movable terminal 20 is placed on the fulcrum portion 18 of the common terminal 14, the movable terminal 20 is set on the common terminal 14, and one end of the coiled spring 36 is attached to the spring receiving portion 35 of the push button 29. The push button 29 is inserted into the opening 1a of the housing 1 to support the support shaft portion 31 in the support holes 12 of the front and rear wall portions of the housing 1, and at the same time, the other of the coil spring 36 The end
The switch device is constructed by mounting the movable member 20 on the spring receiving portion 27 of the guide member 26 engaged with the movable terminal 20.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a switch device such as a seesaw switch used for opening and closing a power source of OA equipment and industrial equipment.

[0002]

[Prior art]

 As a conventional switch device of this type, there is a seesaw switch shown in FIG. This seesaw switch includes a common terminal 60, a movable terminal 61 swingably supported by the common terminal 60, and a fixed terminal 62. The movable terminal 61 has movable contacts 63 at both ends thereof, and the fixed terminal 62 is positioned above the movable contact 63 of the movable terminal 61 to have the fixed contact 64. I have.

Then, by performing a seesaw movement of the push button 65 with the supporting shaft portion 66 as a fulcrum, a guide member operating piece 69 provided on the push button 65 is used to move this movable member via a guide member 67 provided on the movable terminal 61. The terminal 61 is swung, and the left and right movable contacts 63 are alternately brought into contact with the fixed contact 64 to perform the switch operation.

[0004]

[Problems to be solved by the device]

 However, in the above-described conventional switch device, the movable contacts 63 at both ends of the movable terminal 61 are arranged below the fixed contacts 64 of the fixed terminal 62. After the common terminal 60 is attached to the common terminal 60, the movable terminal 61 is set on the fulcrum of the common terminal 60, and then the fixed terminal 62 is attached to the housing 68. There is a problem in that the terminal 61 may come off the fulcrum of the common terminal 60, making automation by an assembly machine difficult, and due to the long-term use of the switch device, the movable contact 63 of the movable terminal 61. And the fixed contact 64 of the fixed terminal 62 are consumed, and the movable terminal 61 and the fixed terminal 62 come into contact with each other, exceeding a specified temperature rise, and finally melted. To the Tsu there problem that continues to be state of the contact on without leaving.

The present invention was made in view of the above problems, and a first object of the present invention is to provide a switch device which can be easily automated by an assembly machine.

A second object of the present invention is to provide a fixed contact for the movable contact even when the movable contact of the movable terminal and the fixed contact of the fixed terminal are consumed and a predetermined amount of loss occurs. Another object of the present invention is to provide a switch device that is effective in terms of safety measures, because it can prevent contact with the contact and maintain the contact off state.

[0007]

[Means for Solving the Problems]

 In order to achieve the above first object, the present invention has a common terminal mounting portion at a bottom portion and a fixed terminal mounting portion located at a portion sandwiching the common terminal mounting portion, and a wall portion of the opening portion. A housing having a supporting hole, a fixed terminal having a fixed contact, a movable terminal having movable contacts at both ends and a fulcrum receiving portion and a guide member in an intermediate portion, a movable terminal operating portion and a spring receiving portion inside. And a push button having a bearing shaft on the outside, the common terminal mounting portion of the housing is mounted with the common terminal, the fixed terminal mounting portion of the housing is mounted with the fixed terminal, the movable terminal is Place the fulcrum receiving part on the fulcrum part of the common terminal, set it on the common terminal, attach one end of a coiled spring to the spring receiving part of the push button, and press this push button into the opening of the housing. The bearing shaft portion provided on the push button is supported in the bearing hole of the housing, and the other end of the coiled spring is attached to the spring receiving portion of the guide member. .

In order to achieve the above second object, the present invention provides a switch device according to claim 1, wherein a movable contact of the movable terminal and a fixed contact point of the fixed terminal are provided on a bottom portion of the housing. It is characterized in that a stopper portion is provided which receives the movable terminal and stops contact between the movable contact and the fixed contact when a predetermined amount of loss occurs.

[0009]

[Action]

 According to the configuration of claim 1, first, the common terminal is attached to the common terminal mounting portion of the housing, the fixed terminal is attached to the fixed terminal mounting portion, and the fulcrum receiving portion of the movable terminal is the fulcrum portion of the common terminal. Mount the movable terminal on the common terminal, then attach one end of the coiled spring to the spring receiving part of the push button and insert the push button into the opening of the housing to insert the support shaft. Part is supported in a supporting hole in the wall of the housing, and at the same time, the other end of the coiled spring is mounted on the spring receiving part of the guide member provided on the movable terminal to assemble the switch device. You can This facilitates automation by the assembly machine.

Further, according to the configuration of claim 2, when the movable contact of the movable terminal and the fixed contact of the fixed terminal are worn out and a predetermined amount of loss occurs due to long-term use of the switch device or the like, The stopper portion can receive the movable terminal to prevent the movable contact from contacting the fixed contact and maintain the contact-off state, which is effective in terms of safety measures.

[0011]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 is a front view of a switch device according to the present invention, FIG. 2 is a side view of the same switch device, FIG. 3 is a sectional view taken along the line AA of FIG. 2 and FIG. 4 is a sectional view taken along the line BB of FIG. 5 is a sectional view of the housing, and FIG. 6 is a sectional view of the housing.

The switch device according to the present invention includes a housing 1 made of an insulating material, a common terminal 14, a movable terminal 20, and a push button 29. The inside of the housing 1 is shown in FIGS. As shown, it is divided into two switch storage chambers 3 by a partition portion 2 which is an insulating wall. A common terminal mounting portion 4 is formed in the center of the bottom of the switch housing 3, and fixed terminal mounting portions 5 and 6 are formed on the left and right sides of the bottom, respectively. An insertion hole 7 is formed, and stoppers 8 are raised on the left and right of the common terminal mounting portion 4. Further, terminal insertion holes 9 and 10 are formed in the fixed terminal mounting portions 5 and 6. A terminal guide portion 11 is formed at the center of the inner wall portions 3b and 3c of the switch housing chamber 3. A support hole 12 is formed in the center of the front and rear walls of the housing 1, and lock pieces 13 are formed on the left and right outer side surfaces of the housing 1.

As shown in FIGS. 7 and 8, the common terminal 14 has a notch portion 17 in its upper portion, and fulcrum portions 18 are formed at both side edges of the notch portion 17. . Further, as shown in FIGS. 9 and 10, the fixed terminals 15 and 16 have their upper portions bent at a right angle, and fixed contacts 19 are fixed to the bent portions.

As shown in FIGS. 11 and 12, the movable terminal 20 is provided with a strip-shaped terminal body 21 in a plan view, and both ends of the terminal body 21 are bent upward. The movable contact 23 is fixed to 22. An engaging hole 24 is formed in the central portion of the terminal body 21, and fulcrum receiving portions 25 are provided on both side edges of the central portion of the terminal body 21.

A guide member 26 is attached to the movable terminal 20 in engagement with the engagement hole 24. As shown in FIGS. 13 and 14, the guide member 26 is provided with a spring receiving portion 27 at its upper portion and an engaging protrusion portion 28 at its lower portion.

Further, the push button 29 has a button body 30 as shown in FIGS. 15 to 20, and the shaft body 31 is formed on both outer side surfaces of the button body 30. Two movable piece actuating portions 32 are formed inside the button body 30. These movable piece actuating parts 32 have a pair of actuating pieces 33, and notches 34 are formed at the tips of these actuating pieces 33. A spring receiving portion 35 is formed inside the button body 30 so as to be located between the pair of operating pieces 33.

Then, the common terminal 14 is inserted into the terminal insertion hole 7 of the common terminal mounting portion 4 of the housing 1, and the fixed terminals 15 and 16 are inserted into the terminal insertion holes 9 and 10 of the fixed terminal mounting portions 5 and 6, respectively. Then, the fulcrum receiving portion 25 of the movable terminal 20 is placed on the fulcrum portion 18 above the common terminal 14, and the movable terminal 20 is set on the common terminal 14.

Next, one end of a coiled spring 36 is attached to the spring receiving portion 35 of the push button 29, and the push button 29 is inserted into the opening 1 a of the housing 1 so that the support shaft portion 31 is attached to the housing. 1 is supported in the support holes 12 in the central portions of the front and rear walls, and at the same time, the other end of the coiled spring 36 is supported by the spring bearing of the guide member 26 engaged with the movable terminal 20. The switch device is configured by being attached to the portion 27.

Then, the push button 29 is caused to perform a seesaw motion with the supporting shaft portion 31 as a fulcrum, so that the operating piece 33 provided on the push button 29 moves the movable piece 20 through the guide member 26 provided on the movable terminal 20. By swinging the terminal 20, the left and right movable contacts 23 are alternately brought into contact with the fixed contact 19, and this contact is held by the coil spring 36 to perform a switch operation.

As described above, first, the common terminal 14 is attached to the common terminal mounting portion 4 of the housing 1, the fixed terminals 15 and 16 are attached to the fixed terminal mounting portions 5 and 6, and the movable terminal 20 is attached. The fulcrum receiving part 25 is placed on the fulcrum part 18 of the common terminal 14, the movable terminal 20 is set on the common terminal 14, and then the spring receiving part 35 of the push button 29 is connected to the one end part of the coil spring 36. And pushes the push button 29 into the opening 1a of the housing 1 to support the support shaft portion 31 in the support hole 12 of the wall of the housing 1, and at the same time, the coil spring 36 The other end of the switch device can be attached to the spring receiving portion 27 of the guide member 26 provided on the movable terminal 20 to assemble the switch device. This facilitates automation by the assembly machine.

Further, when the movable contact 23 of the movable terminal 20 and the fixed contact 19 of the fixed terminals 15 and 16 are worn out and a predetermined amount of loss occurs due to long-term use of the switch device, The stopper portion 8 receives the movable terminal 20 and prevents the movable contact 23 from coming into contact with the fixed contact point 19 to keep the contact off state.

[0022]

[Effect of device]

 As described above, the invention of claim 1 has the fixed terminal mounting portion located at a portion sandwiching the common terminal mounting portion and the common terminal mounting portion in the bottom portion, and the bearing hole portion in the wall portion of the opening portion. A housing having the same, a fixed terminal having a fixed contact, a movable terminal having movable contact points at both ends and a fulcrum receiving portion and a guide member in an intermediate portion, a movable terminal operating portion and a spring receiving portion inside, Push-buttons each having a bearing shaft on the outside, and the common terminal is mounted on the common terminal mounting portion of the housing, and the fixed terminal is mounted on the fixed terminal mounting portion of the housing. Place the receiving part on the fulcrum part of the common terminal and set it on the common terminal, attach one end of the coiled spring to the spring receiving part of the push button, and insert this push button into the opening of the housing. Then, the bearing shaft portion provided on the push button is supported in the bearing hole of the housing, and the other end portion of the coiled spring is attached to the spring bearing portion of the guide member. Attach the common terminal to the terminal mounting part, attach the fixed terminal to the fixed terminal mounting part, set the fulcrum receiving part of the movable terminal on the fulcrum part of the common terminal, and set the movable terminal to the common terminal. , One end of a coiled spring is attached to the spring receiving portion of the push button, the push button is inserted into the opening of the housing, and the bearing shaft is supported in the bearing hole of the wall of the housing. At the same time, the other end of the coil-shaped spring can be attached to the spring receiving portion of the guide member provided on the movable terminal to assemble the switch device. This facilitates automation by the assembly machine.

According to a second aspect of the invention, in the switch device according to the first aspect, the movable terminal is provided at the bottom of the housing when a predetermined amount of the movable contact of the movable terminal and the fixed contact of the fixed terminal are lost. Since the stopper part that receives and stops the contact of the movable contact with the fixed contact is provided, the movable contact of the movable terminal and the fixed contact of the fixed terminal are worn out due to long-term use of the switch device, etc. When a defect occurs, the stopper portion can receive the movable terminal to prevent the movable contact from contacting the fixed contact and maintain the contact-off state, which is effective as a safety measure.

[Brief description of drawings]

FIG. 1 is a front view of a switch device according to the present invention.

FIG. 2 is a side view of the switch device.

FIG. 3 is a sectional view taken along the line AA of FIG.

FIG. 4 is a cross-sectional view taken along the line BB of FIG.

FIG. 5 is a sectional view of a housing.

FIG. 6 is a sectional view of a housing.

FIG. 7 is a front view of a common terminal.

FIG. 8 is a side view of a common terminal.

FIG. 9 is a front view of a fixed terminal.

FIG. 10 is a side view of a fixed terminal.

FIG. 11 is a plan view of a movable terminal.

FIG. 12 is a side view of a movable terminal.

FIG. 13 is a front view of a guide member.

FIG. 14 is a side view of a guide member.

FIG. 15 is a front view of a push button.

FIG. 16 is a side view of a push button.

FIG. 17 is a bottom view of the push button.

FIG. 18 is a cross-sectional view taken along the line C-C of FIG.

FIG. 19 is a cross-sectional view taken along the line 17D-D of FIG.

FIG. 20 is a cross-sectional view taken along the line EE of FIG.

FIG. 21 is a cross-sectional view of a conventional switch device.

[Explanation of symbols]

 1 Housing 4 Common Terminal Mounting Part 5, 6 Fixed Terminal Mounting Part 7, 9, 10 Terminal Insertion Hole 12 Support Hole 14 Common Terminal 18 Support Point 20 Movable Terminal 25 Support Point Support 26 Guide Member 27 Spring Support 29 Push Button 31 Support Shaft 36 Coil spring

Claims (2)

[Scope of utility model registration request] 1. A housing having a common terminal mounting portion and a fixed terminal mounting portion located at a portion sandwiching the common terminal mounting portion at a bottom portion, and a housing having a bearing hole portion in a wall of an opening, and a fixed contact having a fixed contact. A terminal, a movable terminal having movable contacts at both ends and a fulcrum receiving portion and a guide member in an intermediate portion, a movable terminal operating portion and a spring receiving portion inside, and a push button having a bearing shaft outside, respectively. And mounting the common terminal to the common terminal mounting portion of the housing, mounting the fixed terminal to the fixed terminal mounting portion of the housing, placing the movable terminal on the fulcrum receiving portion on the fulcrum portion of the common terminal. Set on the common terminal, attach one end of a coiled spring to the spring receiving portion of the push button, insert the push button into the opening of the housing, and mount the push button on the push button. A switch device, wherein the shaft portion is supported in a bearing hole of the housing, and the other end portion of the coiled spring is attached to a spring receiving portion of the guide member. 2. A stopper portion is provided at a bottom portion of the housing, the stopper portion receiving the movable terminal and interrupting the contact of the movable contact with the fixed contact when the movable contact of the movable terminal and the fixed contact of the fixed terminal are damaged by a predetermined amount. The switch device according to claim 1, wherein: