JPH0229643Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tumbler type switch.

The 5th problem with conventional tumbler type switches
This will be explained with reference to the figure.

As shown in FIG. 6, a contact operating projection 31 is formed on the operating knob 30. As shown in FIG. This operating knob 30 is supported by a frame 32 in a see-saw manner.
The frame body 32 includes a frame portion 33 and a flange portion 34, and a support base 35 is formed on the flange portion 34. A support shaft 36 is attached to the support base 34, and the operation knob 30 is supported so as to be able to perform seesaw operation. A movable contact piece 37 is placed at the inner bottom of the frame portion 33 so as to be able to perform see-saw operation on a terminal 38 which also serves as a fulcrum. Similarly, the fixed terminal 3 is located at the inner bottom of the frame 33.
9 is placed, and the movable contact 40 of the movable contact piece 37
and the fixed contact 41 of the fixed terminal 39 are provided so as to face each other. A holding hole 42 is provided in the contact operating protrusion 31 of the operating knob 30, into which a spring 43 and a ball 44 are inserted. ball 44 and spring 4
3, when the operation knob 30 is operated in a seesaw manner, the movable contact piece 37 has a seesaw operation with a quick action, and thereby the contacts 40, 41
The door is opened and closed. The switch shown in FIG. 6 is constructed by inserting a support shaft 36, which is a separate member from the operating knob 30, from the side.
is supported on the support stand 30.

The conventional switch having the above configuration has the following drawbacks.

(1) There were many parts.

(2) Assembly was troublesome.

The present invention addresses the above-mentioned drawbacks and aims to provide a device with a small number of parts and easy assembly.

That is, the present invention provides a switch comprising a frame, an operation knob supported by the frame in a see-saw manner, and a fixed contact piece and a movable contact piece attached to the frame. It is formed from a top plate formed to close one side of the frame and a flange formed to extend outside the frame, and the operation knob has a push part for pushing your finger and a push part that extends downward from the push part. A pair of support bases extending above the top plate are formed in the frame portion of the frame body, and a pair of support bases extending above the top plate are formed on the frame portion of the frame body. A pin bearing hole for rotatably supporting the shaft pin is formed in the pin bearing hole, an opening groove communicating with the outside is formed in the pin bearing hole, and the width of the opening groove is smaller than the outer diameter of the shaft pin. The operating knob is attached to the frame by pushing the shaft pin through the opening groove and fitting and supporting it in the pin bearing hole, and the top plate of the frame has a guide hole through which the contact operating part of the operating knob passes. The guide hole is located inside the pair of support stands, and the guide hole is formed into an approximately rectangular shape.The length of the rectangle is such that the steering point operation part can be operated as a seesaw, and the width is The thickness of the two supports is approximately the same as the thickness of the control rod, and a movable contact support part and a fixed contact support part are provided within the frame of the frame, and both support parts are provided to face each other within the frame. A movable contact piece support groove and a fixed contact piece support groove are formed extending from the opening side of the frame toward the top plate side, both support grooves are formed in an L-shape, and the fixed contact piece is formed at a nearly right angle. A bent fixed piece and a mounting piece were formed into an L-shape, and the fixed piece was fitted and supported in the fixed piece support groove of the fixed piece supporting part, and the movable piece was bent almost at a right angle. The movable contact piece is formed into an L shape with a fixed piece part and a mounting piece part, and this movable contact piece is fitted and supported in the movable contact piece support groove of the movable contact piece support part, and the movable piece part of the movable contact piece is provided with an operation knob. The protrusion that protrudes toward the contact operating rod is bent into a substantially V shape, and the contact operating lever of the operating knob is formed with an approximately V-shaped engagement groove and slope, and the engagement groove is formed on the contact operating lever of the movable contact piece. The protrusion is formed on the surface of the movable contact piece facing the movable piece so that the protrusion can be engaged with the movable contact piece, and the slope is formed on the corner of the surface of the movable contact piece facing the movable piece. .

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 to 5.

The frame body 1 is formed from a frame part 2, a top plate 3, and a flange part 4. Both flange portions 4 are formed with mounting holes 5 into which mounting screws are inserted. The upper side of the frame part 2 is closed with a top plate 3. The bottom side is open.

A support base 6 is formed on the surface of the top plate 3 of the frame portion 2. The support stands 6 are formed to protrude upward and extend in parallel in pairs. A pin bearing hole 7 is formed at the top of the support base 6.
This pin bearing hole 7 is formed with an opening groove 8 that communicates with the outside. The width of this opening groove 8 is smaller than the diameter of the pin bearing hole 7. In other words, the pin bearing hole 7 has a narrow opening and a wide depth.

The operating knob 9 is attached to the frame 1 so as to perform seesaw operation. This operating knob 9 has a push part 10 that can be pressed with a finger and a contact operating rod 11. Axial pins 12 are provided on both sides of the pusher 10. This shaft pin 12 is rotatably fitted and supported in the pin bearing hole 7, and the frame body 1 is connected to the operation knob 9.
It is attached to. The width of the opening groove 8 of the pin bearing hole 7 is smaller than the outer diameter of the pin shaft 12, so when the pin shaft 12 is pushed into the opening groove 8, the opening groove 8 is pushed wider, and the pin shaft 12 becomes the pin. It fits deep into the bearing hole 7. Once the pin shaft 12 has passed through, the opening groove 8 returns to its original state and becomes narrower, so that the pin shaft 12, once fitted deep into the pin bearing hole 7, will not come out from the pin bearing hole 7. When removing the pin shaft 12, open the opening groove 8.
By strongly pulling the pin shaft 12 towards the pin, it will come off.

Since the pin shaft 12 of the operating knob 9 is fitted into the pin bearing hole 7 so as not to come out, seesaw operation is maintained so that the operating knob 9 does not come off from the frame 1. Since the operation knob 9 is attached by pushing it in, it is easy to work with and does not require any separate parts to prevent it from coming off.

A guide hole 13 is formed in the top plate 3. This guide hole 13 is located between the pair of support stands 6. The guide hole 13 has a rectangular shape. The width of the guide hole 13 is made approximately the same as the thickness of the contact operating rod 11. The length of the rectangle is set within a range that allows the seesaw operation of the contact operating rod 11.

The fixed contact piece 14 has a mounting piece part 15 and a fixed piece part 16.
Since the mounting piece 15 and the fixing piece 16 are bent at right angles, they form an L-shape. The fixed piece portion 16 is provided with a fixed contact piece 17 .

The movable contact piece 18 has a mounting piece part 19 and a movable contact piece part 20.
It is formed from. A movable contact 21 is provided on the tip side of the movable contact piece 20. A protrusion 22 is provided approximately at the center of the movable contact piece 20. This protrusion 22 is formed by bending the movable contact piece 20 into a V-shape. The protruding portion 22 is formed to face the contact operating rod 11 of the operating knob 9.

Fixed contact piece support part 23 and movable contact piece support part 24
is provided within the frame portion 2 of the frame body 1. A fixed contact piece support groove 25 is formed in the fixed contact piece support part 23, and a movable contact piece support groove 26 is formed in the movable contact piece support part 24, respectively. Both support grooves 25 and 26 are formed in an L-shape. Both support grooves 25 and 26 are formed to extend toward the top plate 3 from the opening side of the frame portion 2.

The fixed contact piece 14 is attached to the fixed contact piece support portion 23 by being inserted into the fixed contact piece support groove 25. Since the fixed contact piece 14 is inserted tightly into the fixed contact piece support groove 25, it must be pushed firmly. Since it is inserted from the opening side of the frame portion 2, it is easy to insert and can be pressed firmly. The inserted fixed contact piece 14 cannot be easily removed.

The movable contact piece 18 is inserted into the movable contact piece support groove 26 and attached to the movable contact piece support portion 24. The installation work is carried out in the same manner as for the fixed contact piece 14.

The contact operating rod 11 of the operating knob 9 has a movable contact piece 1
A slope 2 is provided at the corner of the side opposite to the movable contact piece 20 of 8.
7 is formed. Furthermore, a substantially V-shaped engagement groove 28 is formed on the side facing the movable contact piece 20. Because of the slope 27, it is easier to operate the operating knob for bringing the movable contact 21 of the movable contact piece 18 into contact (ON) with the fixed contact 17 of the fixed contact piece 14. There is an engagement groove 28, so when turned on,
The protruding portion 22 of the movable contact piece 18 is engaged, and the ON state is stably maintained.

Next, the operation will be explained.

In the states shown in FIGS. 1 and 2, the switch is OFF. That is, since the movable piece portion 20 of the movable contact piece 18 is not pressed by the contact operation lever 11 of the operation knob 9, the movable contact 21 is moved to the fixed contact 17.
is in a state where it is not in contact with (OFF).

Then, by pressing the operating knob 9 and operating it to the state shown in FIG. 5, the switch is turned ON. As the contact operating rod 11 of the operating knob 9 moves to the right, the movable piece portion 20 of the movable contact piece 18 is pushed and bent, and the fixed contact 17 comes into contact with the fixed contact 17 (ON). When pressing and bending the movable piece 20, the slope 27 of the contact operating rod 11 is pressed against the movable piece 2.
0, the protrusion 22 slides on the side surface of the contact operating rod 11, and finally the protrusion 2
2 is engaged with the engagement groove 28.

This sliding action on the slope 27 reduces the operating force needed to move the operating knob. Engagement groove 2
Since the protrusion 22 engages with the switch 8 and maintains this state, the ON state of the switch is stably maintained.

Since the movable contact piece 18 is made of an elastic material, it flexes well as the operating knob 9 is operated. By pushing the operating knob 9 so that the contact operating rod 11 returns to the left side, the protruding portion 22 is removed from the engagement groove 28, and as the protruding portion 22 is removed from the contact operating rod 11, the movable piece portion 20 is moved by elastic force.
It returns to the OFF state. The direction in which the movable piece portion 20 bends when turned on and off is perpendicular to the direction in which the movable contact piece 18 is attached to the movable contact piece support portion 24. The movable contact piece 18 is moved by the deflection of the movable piece.
The installation will not be reversed.

The contact operating rod 13 of the operating knob 9 is a movable contact piece 18
The movable piece part 20 receives a pressing force to be pushed in one direction. Since the contact operating rod 13 is slidably guided in the guide hole 13 of the top plate 3, it helps to withstand the above-mentioned pressing force. Since the size of the guide hole 13 is made large enough to allow the contact operating rod 13 to perform seesaw operation, the intrusion of dust from the outside into the inside of the switch is reduced.

As described above, the present invention includes a frame body, an operation knob supported by the frame body so as to be freely operable as a seesaw,
In a switch consisting of a fixed contact piece and a movable contact piece attached to a frame body, the frame body is formed to extend outside of the frame part, a top plate formed to close one of the frame parts, and a top plate formed to close one of the frame parts. The operation knob is formed from a push part for pushing a finger, a contact operation part extending downward from the push part, and a shaft pin formed to protrude to the left and right of the push part. A pair of support stands extending above the top plate are formed in the frame, and a pin bearing hole for rotatably supporting the shaft pin is formed in the top of the support stand. forming an opening groove leading to the outside, and forming the width of the opening groove to be smaller than the outer diameter of the shaft pin;
The operating knob is attached to the frame by pushing the shaft pin through the opening groove and fitting and supporting the pin bearing hole, and forming a guide hole in the top plate of the frame through which the contact operating part of the operating knob passes; This guide hole is located inside the pair of support stands, and the shape of the guide hole is approximately rectangular.The length of the rectangle is such that the control point operation section can operate as a seesaw, and the width of the The thickness is approximately the same as that of the point operation rod, and a movable contact piece support part and a fixed contact piece support part are provided within the frame of the frame body.
Both support portions are provided to face each other within the frame, and both support portions are formed with a movable contact piece support groove and a fixed contact piece support groove extending from the opening side of the frame portion toward the top plate side,
Both support grooves are formed in an L-shape, and the fixed contact piece is formed into an L-shape with a fixed piece part and a mounting piece part bent at almost right angles, and this fixed contact piece is connected to the fixed contact part of the fixed contact piece support part. The movable contact piece is fitted and supported in the single support groove, and the movable contact piece is formed into an L-shape with a fixed piece part and a mounting piece part bent at an almost right angle. The movable contact piece is fitted and supported in the groove, and the movable piece of the movable contact piece has a protrusion that protrudes toward the contact operating rod of the operating knob, which is bent into an approximately V-shape, and the contact operating lever of the operating knob has an approximately V-shaped protrusion. The engaging groove is formed on the surface facing the movable piece of the movable contact piece so that the protruding part of the movable contact piece can be engaged, and the slope is formed on the surface facing the movable piece part of the movable contact piece. It is characterized by being formed at the corner of the surface facing the.

According to this configuration, the following actions and effects can be expected.

(1) Since the switch is composed of the frame, the operating knob, the fixed contact piece, and the movable contact piece, the number of parts is small and the structure is simple.

(2) It is easy to assemble because there are no fastening parts such as screws and it can be assembled by pushing.

That is, the operating knob is attached by pushing the shaft pin of the operating knob into the pin bearing hole from the opening groove of the support base.

Both contact pieces are attached by pushing the fixed contact piece into the fixed contact piece support groove of the fixed contact piece support part and the movable contact piece into the movable contact piece support groove of the movable contact piece support part. Moreover, since the frame portion of the frame body has an opening on the lower side, it is easy to push both contact pieces.

As you can see, it is extremely easy to assemble.

(3) The mounting part of the movable contact piece will not loosen due to ON/OFF operation of the switch.

The operating direction of the movable contact piece when turning ON and OFF is almost perpendicular to the mounting direction in which the movable contact piece is pushed in, so the ON and OFF operation of the movable contact piece causes
The attachment part will not come loose.

(4) The switch is easy to operate.

Since the contact operating lever of the operating knob is formed with an inclined surface, sliding on the protruding portion of the movable contact piece is performed smoothly. The operation knobs are easily operated.

(5) A stable state of the switch is ensured.

Since the protrusion of the movable contact piece is engaged with the engagement groove provided in the contact operating lever of the operating knob, a stable ON state can be obtained.

[Brief explanation of drawings]

1 to 5 show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional view of a switch. This vertical cross-sectional view shows the switch in the OFF state. Figure 2 is the first
3 is an exploded perspective view of the switch, and FIG. 4 is a bottom view of the frame of the switch as seen from below. FIG. 5 is a longitudinal sectional view of the switch, showing the switch in the ON state. FIG. 6 shows a conventional switch, and is a longitudinal sectional view of the switch. 1...Switch frame, 9...Operation knob, 1
4... Fixed contact piece, 18... Movable contact piece, 23... Fixed contact piece support part, 24... Movable contact piece support part.

Claims (1)

[Claims for Utility Model Registration] In a switch consisting of a frame, an operation knob supported by the frame for see-saw operation, and a fixed contact piece and a movable contact piece attached to the frame, the frame is The operating knob is formed from a top plate formed to close one side of the frame, and a flange extending outside the frame, and the operating knob has a push part for pushing your finger and a top plate that extends downward from the push part. It is formed from an extending contact operating part and a shaft pin formed to protrude to the left and right of the push part, and a pair of support stands extending above the top plate are formed in the frame part of the frame body, and the support stand A pin bearing hole for rotatably supporting the shaft pin is formed at the top of the shaft pin, and an opening groove communicating with the outside is formed in this pin bearing hole, and the width of this opening groove is set to be larger than the outer diameter of the shaft pin. The operating knob is attached to the frame by pushing the shaft pin through the opening groove and fitting and supporting the pin into the pin bearing hole, and the top plate of the frame has a guide for passing the contact operating part of the operating knob. A hole is formed, and this guide hole is located inside the pair of support stands, the shape of the guide hole is formed in a substantially rectangular shape, and the length of the rectangle is such that the steering point operation part can be operated as a seesaw; The width is approximately the same as the thickness of the control rod, and a movable contact support part and a fixed contact support part are provided within the frame of the frame, and both support parts are provided in the frame so as to face each other. A movable contact piece support groove and a fixed contact piece support groove are formed in the support portion, extending from the opening side of the frame portion toward the top plate side, both support grooves are formed in an L-shape, and the fixed contact piece is approximately It is formed into an L-shape with a fixed piece and a mounting piece bent at right angles, and this fixed piece is fitted and supported in the fixed piece support groove of the fixed piece supporting part, and the movable piece is bent almost at right angles. The movable contact piece is formed into an L-shape with a bent fixed piece part and a mounting piece part, and this movable contact piece is fitted and supported in the movable contact piece support groove of the movable contact piece support part, and the movable piece part of the movable contact piece is The protruding part of the operating knob that protrudes toward the contact operating rod is bent into a substantially V shape, and the contact operating lever of the operating knob is formed with an approximately V-shaped engagement groove and slope, and the engaging groove is formed on the movable contact. A switch characterized in that the movable contact piece is formed on the surface facing the movable piece part so that the protruding part of the piece can be engaged, and the slope is formed on the corner part of the surface of the movable contact piece facing the movable piece part. .