KR200236455Y1 - Switch with an override interruption structure - Google Patents

Abstract

The push button switch includes a box having a button movably inserted into the box, and the vibration member is pivotally connected to one terminal plate. The bimetal plate is connected to the other terminal plate. The bent spring is connected to the vibrating member, and the tongue-like member of the button is in contact with the bent spring so that the bimetal plate can contact the vibrating member when the button is pressed. The movable member has a U-shaped member having an end that engages with the recessed area enclosed within the button. The inner circumferential surface of the recessed area positions the end of the U-shaped member in the open position and the closed position. The movable member is pressed by the deformation of the bimetal plate, and the U-shaped member moves at a position in the recess area.

Description

SWITCH WITH AN OVERRIDE INTERRUPTION STRUCTURE}

The present invention is very simple in structure, and relates to a push button switch having an override blocking structure for automatically opening a circuit when overridden.

Many conventional push buttons with an override blocking structure are disclosed in US Pat. No. 5,786, US Pat. No. 5,223,813, US Pat. No. 4,937,548, US Pat. No. 4,661,667, US Pat. No. 5,223,813, US Pat. 5,451,729 and US Pat. No. 4,704,594. In US Pat. No. 4,937,548 a bimetal plate is used that is thermally deformed to operate an open circuit when current is overridden. However, since the structure of separating the two contact stages is indirectly operated by the bimetal plate, the action of opening the circuit is time consuming, and there is a possibility that the electric device is damaged by the electric current when overridden. Moreover, a separate wire is needed to connect between the bimetal plate and the conductive plate. In U.S. Patent No. 5,786,742, since the button is directly connected to the conductive end, opening the circuit does not occur quickly enough to timely protect the device.

The object of the present invention is to provide a push button that is simple in structure and can open a circuit in a timely manner to protect an electric device.

According to one aspect of the present invention, there is provided a push button switch comprising a box having a button movably inserted in an open top of the box. The tubular member is formed long at the bottom of the button, and the spring is biased to one side between the tubular member and the box. The tongue-like member is formed long at the bottom of the button, and the recessed region is formed on the surface of the tubular member. The recessed region has a polygonal inner circumferential surface, and the central member is located at the center of the recessed region. The first terminal plate and the second terminal plate are each formed long at the bottom of the box. The board is formed long inside the box, and holes are formed in the surface of the board. The two rods are each formed long inside the box.

The movable member has two slots, and the rod is movably received in the two slots. The U-shaped member has one leg portion which is elongated in the movable member and movably engages the recess region. The other leg portion of the U-shaped member is inserted into the hole of the board. The U-shaped bimetal plate has a middle plate located between two leg portions of the U-shaped bimetal plate, and the first contact end is connected to the middle plate. The two leg portions of the bimetal plate are fixedly connected to the upper portion of the first terminal plate. The bimetal plate is located next to the end of the movable member. The vibrating member has a first end pivotally connected to the second terminal plate, and the second end of the vibrating member is connected to the second contact end. One end of the bent spring is fixedly connected to the box, and the other end is connected to the vibration member. The tongue-like member is in contact with the bent spring.

It is an object of the present invention to provide a switch having a movable member that is pushed by the bimetal plate when it is overridden and the button being raised by the U-shaped member when the movable member moves.

1 is an exploded view showing a push button switch according to the present invention.

2 is an exploded view showing a push button and a spring according to the present invention.

3 is an exemplary view showing an open circuit state of a switch according to the present invention.

4 is an exemplary view showing a close circuit state of a switch according to the present invention.

5 is an exemplary view showing an open circuit state of a switch according to the present invention when the bimetal plate is overridden and deformed.

Fig. 6A shows the position of the leg portion of the U-shaped member in the recess area of the push button when the circuit is in the open position.

Fig. 6B shows the position of the leg portion of the U-shaped member in the recess area of the push button when the button is pressed and the circuit is closed.

Fig. 6C shows the position of the leg portion of the U-shaped member in the recess area of the push button when the circuit is in the closed position.

Fig. 6D shows the position of the leg portion of the U-shaped member in the recess area of the push button when the button is pressed and the circuit is opened.

FIG. 7A shows that the leg portion of the U-shaped member is still in the same closed circuit position as the position shown in FIG. 6C when the metal plate is deformed.

FIG. 7B shows the U-shaped member moving to the left when the metal plate is deformed.

FIG. 7C is a view showing that when the metal plate is deformed and the circuit is opened, the button is lifted up and the leg portion of the U-shaped member is positioned at the same position as shown in FIG. 6A.

** Description of symbols for the main parts of the drawing **

1: button 2: box

4: movable member 5: vibration member

11: tubular member 12: recessed area

13: tongue-shaped member 14: spring

20: Board 22: Slit

23: Slit 24: First terminal plate

25: second terminal plate 40: U-shaped member

42: slot 43: slot

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 to 3, the push button switch according to the present invention includes a box 2, which is a button 1 movably inserted into an open upper portion 21 of the box 2. ). The tubular member 11 is formed long in the lower part of the button 1, and the hole 110 is formed in the lower part of the tubular member 11, and can accommodate the one end part of the spring 14. As shown in FIG. The other end of the spring 14 is in contact with the inside of the box 1. The tongue-like member 13 is formed long in the lower part of the button 1, and has the inclined surface. A recess region 12 is formed on the surface of the tubular member 11, and the recess region 12 has a polygonal inner circumferential surface. The central member 121 is positioned at the center of the recessed region 12, and the recessed portion 1210 is formed above the central member 12. The triangular plate 122 is formed long on the inner circumferential surface of the recess region 12 and is positioned on the recessed portion 1210 of the central member 12.

The first terminal plate 24 and the second terminal plate 25 are formed long in two slits 2 and 23 formed at the bottom of the box 2, respectively. The board 20 is formed long inside the box 2, and a hole 26 is formed in the surface of the board 20. The recess 211 is formed below the board 20. Two rods 27 and 270 are formed long inside the box 20, respectively.

Two slots 42 and 43 are formed in the movable member 4, and two rods 27 and 270 are movably received in these two slots 42 and 43. The U-shaped member 40 has a leg portion 41 that penetrates the hole 411 in the movable member 4 and is movably engaged with the recess region 12. The other leg portion 410 of the U-shaped member 40 is inserted into a hole 26 formed in the board 20.

The U-shaped bimetal plate 3 has a middle plate 321, which is disposed between two leg portions 31 of the U-shaped bimetal plate 3. The first contact end 34 is connected to the central plate 32, and the two leg portions 31 of the bimetal plate 3 are fixedly connected to the upper portion of the first terminal plate 24. The bimetal plate 3 is arranged next to the end 44 of the movable member 4.

A groove 251 is formed on the second terminal plate 25, and two notches 252 are formed on the inner circumferential surface of the groove 251. The first end of the vibrating member 5 is pivotally accommodated in the groove 251, and two projections 51 are formed long at the first end of the vibrating member 5. Two protrusions 51 engage two notches 252. Thus, the vibrating member 5 pivots about the first end of the vibrating member 5. The second contact end 54 is connected to the second end of the vibrating member 5. The bent spring 55 has an end that is fixedly received in the notch 212 of the board 20, and the other end of the bent spring 55 penetrates the slot 52 formed in the vibrating member 5. Two lugs 551 are provided. The inclined surface of the tongue-like member 13 is in contact with the bent spring 55. One end of the L-shaped spring 45 engages with the recess 211, and the other end of the L-shaped spring 45 has a U-shaped member ( Push 40 into the recessed area 12 of the button 1. The cover 20 is connected to the box 20 through a hole formed in the cover 20 and above the inside of the box 2 by screws or rivets 202 engaging with the hole 29 formed in the box 20. Accept the parts mentioned.

When the circuit is in the open state, the button 1 is located at the highest position by the spring 14 and the leg portion 41 is at the lowest position in the recessed region 12 as shown in FIG. 6A. do. A gap is formed between the first contact end 242 and the second contact end 54.

As shown in FIG. 4, when the button 1 is pressed and the circuit is closed, the bent spring 55 is pressed by the downward motion of the tongue-like member 13, and the vibrating member 5 pivots to the second. The contact end 54 makes contact with the first contact end 34 to form a closed circuit. On the other hand, as shown in FIG. 6B, the leg part 41 of the U-shaped member 40 moves counterclockwise. When the user releases the button 1, as shown in FIG. 6C, the button 1 moves slightly upward, the leg portion 41 is placed in the depression 1210, and the triangle plate 122 is centered. Located between the members 121. When the button 1 is pressed again, the circuit is opened and the leg portion 41 moves as shown in Fig. 6D.

5 shows that the bimetal plate is overridden and deformed. The upper part of the bimetal plate 3 is deformed toward the left to push the end 44 of the movable member 4 apart, whereby the second contact end 54 and the first contact end 34 are separated. The leg portion 41 of the mold member 40 moves from the position shown in FIG. 7A to the position shown in FIG. 7B. The boss 28 is elongated inside the box 1 and is in contact with the center plate 32 of the bimetal plate 3 when the bimetal plate 3 is deformed. The boss 28 prevents the central plate 32 of the bimetal plate 3 from being excessively deformed.

When the button 1 is raised up, the leg portion 41 of the U-shaped member 40 moves to the position shown in Fig. 7C.

While various embodiments of the present invention have been illustrated and described as described above, the present invention is not limited thereto, and various modifications and changes can be made without departing from the spirit and scope of the present invention.

The push button switch of the present invention has the effect that the structure is simple and the circuit can be opened in a timely manner to protect the electric device.

Claims (8)

A button movably inserted in an open upper portion of the box, a tubular member elongated below the button, a spring biased to one side between the tubular member and the box, a tongue-shaped member elongated below the button, A recess region formed on the surface of the tubular member, the recess region having a polygonal inner circumferential surface, a central member positioned at the center of the recess region, a first terminal plate and a second terminal plate each formed long at the bottom of the box, and the box A box having a board formed long inside the box, a hole formed in the surface of the board, two bars each formed long inside the box, Two slots in which the two rods are movably received, and one leg portion elongated in the movable member and movably coupled to the recess region, the other leg portion being a hole in the board A movable member having a U-shaped member inserted therein; A central plate positioned between two leg portions of the U-shaped bimetal plate, and a first contact end connected to the central plate, wherein the two leg portions of the bimetal plate are fixedly connected to an upper portion of the first terminal plate. The bimetal plate is a U-shaped bimetal plate located next to the end of the movable member, A first end rotatably connected to the second terminal plate, a second end connected to the second contact end, one end connected to the box in a fixed state, the other end connected to the vibration member, and the tongue-like member Push button switch, characterized in that consisting of a vibrating member having a bent spring in contact with the. According to claim 1, The second terminal plate has two notches formed on the upper portion, and two projections formed long in the first end of the vibration member, the two projections are coupled to the two notches Push button switch, characterized in that. The push button switch according to claim 2, wherein the second terminal plate has a groove formed thereon, and the first end of the vibrating member is pivotally received in the groove. 2. A recess according to claim 1, further comprising a recess formed at the bottom of the board, and an L-shaped spring having one end coupled with the recess and the other end pushing the U-shaped member toward the recess area of the button. Push Button Switch. The push button switch according to claim 1, further comprising an inclined surface formed in said tongue shaped member, said inclined surface in contact with said bent spring. The push button switch according to claim 1, wherein the tubular member has a hole formed below the tubular member to accommodate one end of the spring. The method of claim 1, further comprising a depression formed in the upper portion of the central member and a triangular plate formed long in the inner peripheral surface of the recess region, the triangular plate is located on the depression of the central member Push Button Switch. The push button switch of claim 1, further comprising a boss formed long inside the box, wherein the boss contacts the central plate of the bimetal plate when the bimetal plate is deformed.