JPH0727541Y2 - Push-button switch - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push button switch, and more particularly to a highly practical button switch in which there is no absolute limitation on the connection between a conducting wire and a neutral wire with a conductive plate and wiring is easy.

[0002]

2. Description of the Related Art An electric circuit of a conventional push button switch is constructed as shown in FIGS. 3 and 4, and in the electric circuit shown in FIG. 3, an OFF switch 10, a first switch 11 and a second switch 12 are provided. And the first switch 11
Controls the first electromagnetic switch 1, and the second switch 12 controls the second electromagnetic switch 2. In FIG. 3, 15
Is a power line, 16 is an output line, and 1a and 2a are normally open
(Always OFF) switches 1b and 2b are normally closed (always ON) switches.

In the electric circuit of FIG. 3, the first switch 1
When 1 is pressed, a current flows through the OFF switch 10, the first switch 11, and the normal ON switch 2b to the first electromagnetic switch 1, the first electromagnetic switch 1 is activated, and the current flows to the output line 16. When the first electromagnetic switch 1 is activated, the normally-on switch 2b of the second electromagnetic switch 2 is turned off, the normally-off switch 1a of the first electromagnetic switch 1 is turned on, and the current flows from the branch line 19 to the first electromagnetic switch 1a. Switch 1 to output. The operation of the second switch 12 is the first
The operation is similar to that of the switch 11.

In the push button switch having the electric circuit shown in FIG. 3, since no safety protection device is additionally provided, if the first switch 11 and the second switch 12 are touched at the same time by mistake, a short circuit occurs. Explosion and concern about safety.

Therefore, a push button switch having the safety protection device shown in FIG. 4 is provided. The electric circuit of the push button switch shown in FIG. 4 includes an OFF switch 20, a first switch 21 and a second switch 22, and the first switch 21 controls the first electromagnetic switch 1.
The second switch 22 controls the second electromagnetic switch 2, and current flows from the power supply line 25.

In the push button switch shown in FIG. 4, when the first switch 21 is pressed, the current flows through the OFF switch 20, the second switch 22, the first switch 21 and the branch line 26 into the first electromagnetic switch 1. , Activates the first electromagnetic switch 1. When the first electromagnetic switch 1 is activated, the second electromagnetic switch 2 is excited and activated, and it is normally turned on.
The switch 2b is turned OFF, the normal OFF switch 1a of the first electromagnetic switch is turned ON, and the current flows through the OFF switch 20 and the normal OFF switch 1a to the branch line 29.
Is output through the first electromagnetic switch 1. The operation of the second electromagnetic switch 2 is similar.

In the above electric circuit, the first switch 21
If the second switch 22 and the second switch 22 are erroneously touched at the same time, a closed circuit is formed, and the currents passed through the first switch 21 and the second switch 22 do not pass each other, and the device becomes a safety protection device. The above push button switch is relatively safer than the push button switch shown in FIG. 3 and can solve the problem of the conventional push button switch shown in FIG. However, the wiring is relatively complicated and expensive, and the tangent line is often erroneous unless the user is skilled in the mounting work.

In view of the above problems, the inventor of the present invention has previously proposed the No. 57217 Taiwan patent "Push Button Switch" in order to solve the operational anxiety and the drawback of complicated wiring in the conventional push button switch. "Improvement device" is proposed.
As shown in FIGS. 5 and 6, the above-mentioned device includes an OFF switch 30, a first switch 31 and a second switch 32 in the housing 3, and the OFF switch 30, the first switch 31 and the second switch 32 are respectively provided. The contact protrusion 33 is provided below. Further, a conductive plate 34 for introducing power is fixed below the OFF switch 30, and further contacted below the conductive plate 34 to make contact with each of the switches 30, 31, 32.
A bridge plate 35 extending below is provided. A fulcrum 36 that projects downward in a spherical shape is formed at approximately the center of the bridge plate 35 so that the bridge plate 35 can be appropriately inclined at both ends around the fulcrum 36.

In the above apparatus, when the first switch 31 or the second switch 32 is pushed to abut against one end of the bridge plate 35, one end of the bridge plate 35 is inclined and the lower side of the first switch 31 or the second switch 32 is tilted. The contact ridge 33 installed on the contact plate 33 is contacted, and the current introduced from the conductive plate 34 is conducted to the contact ridge 33 through the bridge plate 35. If the first switch 31 and the second switch 32 are accidentally pressed at the same time, the first switch 31 and the second switch 32 simultaneously press both ends of the bridge plate 35 to move downward, and the bridge plate 35 and the conductive plate 34 are moved. The entire switch is turned off, away from the contact.

[0010]

The device overcomes the drawbacks of the prior art pushbutton switches when the first switch 31 and the second switch 32 were accidentally pressed at the same time. However, in the above device, a predetermined operation can be achieved when the neutral wire is always connected to the bridge plate 35 and the power supply line is always connected to the conductive plate 34. On the contrary, if the connection position of the power line and the neutral line is wrong, that is, if the neutral line is connected to the conductive plate 34 and the power line is connected to the bridge plate 35, the OFF switch 30 is pressed to stop the switch operation. In this case, the contact between the conductive plate 34 and the bridge plate 35 can be cut off, but if one end of the bridge plate 35 is inclined,
The electric current still cannot pass through the circuit through the bridge plate 35 to be cut off, which is dangerous and extremely inconvenient to use.

The present invention is intended to solve the drawbacks of the above-mentioned conventional push-button switches, and is safe in use even if the wiring positions are exchanged with each other, and can be easily wired and is highly practical.
Moreover, a push button that can prevent contact failure due to vibration.
Intended to provide a switch.

[0012]

In order to achieve the above object, the present invention provides a first switch and a second switch which are arranged in a housing with an OFF switch interposed therebetween, and below the first switch and the second switch. The contact protrusions arranged respectively and fixed below the OFF switch,
Both contact plates connected to the power line and neutral line, and the above OFF
A fulcrum part for vertically inserting and holding a lower end part of a central column protruding downward from the switch, and a tiltingly arranged on an upper surface of the fulcrum part, both sides of which are respectively contact protrusions with the first and second switches. On the bridge board extending between the above, above the bridge board,
A conductive spring arranged around the column, and arranged between the conductive spring and both contact plates so that the conductive spring makes contact with the bottom surfaces of both contact plates and separates from the both contact plates when the OFF switch is pressed. A plate is provided, and both ends of the bridge plate can be tilted around a fulcrum where the bottom surface of the bridge plate is supported by a fulcrum portion. If the first switch or the second switch presses one end of the bridge plate, the bridge One end of the plate tilts downward and comes into contact with the contact protrusions on the lower side, and the current introduced from both the contact plates is conducted to the contact protrusions through the conductive plate, the conductive spring and the bridge plate to make the conductive state, The present invention provides a push-button switch, characterized in that when the above-mentioned OFF switch is pressed, the conductive plates are detached from both contact plates to present an electrical cutoff state.

That is, contact protrusions are provided below the first switch and the second switch provided in the housing together with the OFF switch, and the power source line and the neutral line are respectively provided at appropriate positions below the OFF switch. Both contact plates that are connected to the contact plate are provided, and conductive plates that are in electrical contact with the bottom surfaces of the both contact plates are attached, and if the OFF switch is pressed, the conductive plates are pressed to prevent contact with both contact plates. Further, a bridge plate is provided below the conductive plate, a conductive spring is provided around the lower end portion of the OFF switch between the conductive plate and the conductive plate, and both ends of the bridge plate are provided on the bottom surface. With the fulcrum as an action point, you can incline appropriately,
When the first or second switch presses the one end of the bridge plate, one end of the bridge plate is tilted downward and comes into contact with the contact protrusion below the first or second switch to contact the contact plate. The electric current introduced from the above is sent to the contact protrusion through the conductive plate, the conductive spring and the bridge plate so as to be in a conductive state.
The present invention provides a push button switch in which the conductive plates are detached from the contact plates when the F switch is pressed, so that the switch is brought into an electrically disconnected state.

The conductive spring is formed of a coiled spring, and a through hole is formed in the conductive plate so that the through hole can be inserted through a small diameter portion formed on the lower side of the central column of the OFF switch. Further, it is more preferable that when the OFF switch is pressed, the lower end surface of the support column abuts and presses the conductive plate to separate it from the both contact plates.

[0015]

According to the present invention constructed as described above, when the first switch or the second switch is pressed, the bridge board tilts like a seesaw around the center as a fulcrum, and the power source is located below the bridge board or below the first switch. When the OFF switch is pressed, the lower end of the OFF switch abuts and presses the conductive plate and separates it from both the contact plates to stop energization. The conductive spring is formed of a coiled spring, a through hole is provided in the conductive plate, the small diameter portion formed at the lower end of the column of the OFF switch is inserted, and the conductive plate is abutted by the lower end surface of the column. OFF because it is configured to come into contact with each other and separate from both contact plates
Since the conductive plate is pushed down by the lower end surface of the switch column, the contact with both contact plates can be reliably released.
As soon as the pressing force of the OFF switch is released, the conductive plate can be quickly restored to the contact state with both contact plates.
The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the embodiments with reference to the drawings.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the embodiments shown in the drawings. 1, the push button of the present invention
The switches are the OFF switch 5 at the center of the upper surface of the housing 4, and the first switch 40 and the second switch 4 on both sides thereof.
1, the switches 5, 40, 41 hold the central columns 50, 400, 410 on the bearings 4a, 4b, 4c provided in the housing 4 so as to be able to move up and down, and the bearings 4a, 4
Coil-shaped springs 6 are respectively compressed between b, 4c and the upper surfaces of the switches 5, 40, 41 to hold the switches 5, 40, 41 in the positions shown in the drawing.

Further, in the housing 4, below the first switch 40 and the second switch 41, on the same line as the axes of the columns 400 and 410, a contact protrusion for connecting to the terminal of the electric circuit shown in FIG. The origin (55) is fixed.

The pillar 50 of the OFF switch 5 is extended downward as shown in the figure, and the small diameter portion 502 is projected stepwise from the lower end surface 501 of the pillar 50, and the lower end of the small diameter portion 502 is provided in the housing 5. It is inserted and held in the center hole 440 of the fulcrum portion 44 so as to be able to move up and down. An annular upper surface of the fulcrum portion 44 is projected in an arc shape and supports a bridge plate 53 described later so as to be tiltable.

Both contact plates 51 are fixed at the same height to the side portions of the lower surface of the bearing 4a installed below the OFF switch 5. A power line and a neutral line are connected to the contact plates 51, respectively. The gap between the contact plates 51 is designed so that the column 50 of the OFF switch 5 can move up and down without contact.

A conductive plate 52, a coil-shaped conductive spring 54, and a bridge plate 53 are provided between the contact plates 51 and the fulcrum portion 44.
Are arranged, and the small diameter portion 502 of the OFF switch 5 is loosely fitted in each center hole. That is, through holes 521, 531 are provided in the centers of the conductive plate 52 and the bridge plate 53 to loosely fit the small diameter portion 502, and the bridge plate 53 is tiltably arranged on the upper surface of the fulcrum portion 44. A conductive plate 52 is arranged on the upper surface of the bridge plate 53 via a conductive spring 54, and the upper surface of the conductive plate 52 is urged so as to contact the lower surfaces of both contact plates 51. Therefore, when the OFF switch 5 is pressed,
The lower end surface 501 of the support column 50 abuts and presses against the conductive plate 52 to separate the conductive plate 52 from the contact plates 51. The conductive plate 52 is provided only within the range below the OFF switch 5, and does not extend below the first switch 40 and the second switch 41.

The bridge plate 53 is formed of an elongated plate made of a conductive material, and is extended so as to be distributed below the first switch 40, the second switch 41 and the OFF switch 5. When the first switch 40 or the second switch 41 is pressed, the bridge plate 53 is inclined like a seesaw with the lower end of the small diameter portion 502 connected below the support column 50 of the OFF switch 5 as a fulcrum, and the power source is supplied from the bridge plate 53. It is electrically connected to the first switch 40 or the second switch 41.

On the contrary, when the OFF switch 5 is pressed, O
The lower end surface 501 of the column 50 of the FF switch 5 is the conductive plate 52.
The contact plate 51 is brought into contact with and pressed by the contact plate 51 to separate the conductive plate 52 from the contact plates 51 to cut off the energization. In the unlikely event that the OFF switch 5 is accidentally pressed, there is no danger, and since the bridge plate 53 is firmly held by the fulcrum portion 44, the bridge plate 53 does not tilt due to vibration alone, and therefore the bridge plate 53 does not tilt. It is possible to prevent the danger that the 53 is accidentally brought into contact with the first switch 40 or the second switch 41 to cause a danger.

Next, referring to FIG. 2 and FIG. 5, the operation will be described. The current introduced to both contact plates 51 is the conductive plate 5.
2. Conductive spring 54 is connected to bridge plate 53. When the first switch 40 is pressed in this state, the first switch 40
The lower end of the column 400 presses one end of the bridge plate 53 to move it downward. The other end of the bridge plate 53 moves in a seesaw manner with the lower part of the OFF switch 5 as a fulcrum, and comes into contact with the contact protrusion 55 located below the bridge plate 53 to cause the first switch 40 and the second switch 41 to move. The operation is completed.

Under this condition, even if the power supply line and the neutral line connected to both contact plates 51 are exchanged with each other, the operation effect is not affected. That is, according to the present invention, the connecting position of the power line and the neutral line is not absolute, the assembly and mounting is very convenient, and the O
When the FF switch 5 is pressed, the bridge plate 53 is more effectively brought into an electrically disconnected state and the operation is not continued, so that safety in use can be secured. As described above, the push-button switch of the present invention is not only highly safe, but also arbitrarily connects the power line to either one of the contact plates 51 and the neutral line to the other of the contact plates 51. Since there is no absolute limitation on the connection between the power supply line and the neutral line, the tangent line is extremely simple, and even an amateur can easily mistake the tangent line.

[0025]

As is apparent from the above description, according to the present invention, when the first switch or the second switch is pressed, the bridge board tilts in a seesaw shape and the lower side of the first switch or the second switch. When the OFF switch is pressed, the lower end of the OFF switch abuts and presses the conductive plates to separate them from the contact plates, thereby cutting off the energization. Therefore, under the condition that one end of the bridge plate is tilted and is in contact with the contact protrusion below the first switch or the second switch, replace the power line and the neutral line connected to both contact plates with each other. Also has no influence on the energizing action, that is, the connection position of the power line and the neutral line is not absolute. Therefore, assembling and mounting become very convenient, and safety in use can be secured, so that even an amateur can easily make a tangent line.

[Brief description of drawings]

FIG. 1 is a sectional side view of a push button switch of the present invention.

FIG. 2 is an electric circuit diagram of the push button switch of the present invention.

FIG. 3 is an electric circuit diagram of a conventional push button switch.

FIG. 4 is an electric circuit diagram of another conventional push button switch.

FIG. 5 is a cross-sectional side view of a push button switch improving device according to the prior application of the present inventor.

6 is an electric circuit diagram of the device shown in FIG.

[Explanation of symbols]

 4 housing 5 OFF switch 40 first switch 41 second switch 44 fulcrum 51 contact plate 52 conductive plate 53 bridge plate 54 conductive spring 55 contact protrusion 502 small diameter part 521 through hole

Claims (3)

[Scope of utility model registration request] 1. A first switch (40) and a second switch (41) arranged with an OFF switch (5) sandwiched in a housing (4), and arranged below the first switch and the second switch, respectively. The contact protrusion (55), both contact plates (51) arranged below the OFF switch and connected to the power line and the neutral line, and the central support (5) protruding below the OFF switch.
(0) A fulcrum part (44) for inserting and holding the lower end of the (0)
And a bridge plate (53) tiltably arranged on the upper surface of the fulcrum part and extending on both sides between the first and second switches and the contact protrusion, respectively, and the pillar on the bridge plate. A conductive spring (5
4) is arranged between the conductive spring and both contact plates, and the conductive plate (5) is brought into contact with the bottom surfaces of both contact plates by the spring force of the conductive spring and is separated from both contact plates when the OFF switch is pressed.
2) is provided, and both ends of the bridge plate can be tilted with the fulcrum as a fulcrum, and when one end of the bridge plate is pressed by pressing the first switch or the second switch, one end of the bridge plate faces downward. And contact the lower contact protrusion, and the current introduced from both contact plates is conducted to the contact protrusion through the conductive plate, the conductive spring and the bridge plate to make it conductive, and press the OFF switch. For example, the push button switch is characterized in that the conductive plates are detached from both the contact plates so as to be in an electric cutoff state. 2. The push button switch according to claim 1, wherein the conductive spring (54) is formed of a coil spring. 3. The through hole (521) is provided in the conductive plate (52) so that the small diameter portion (502) formed at the lower end of the column (50) of the OFF switch (5) can be inserted therethrough, and ,
A structure in which the lower end surface of the column (50) of the OFF switch (5) connected to the small diameter portion (502) abuts and presses the conductive plate (52) to separate it from both contact plates (51). Push button switch described.