CN1681064A - Circuit Control Protector - Google Patents

Abstract

The invention relates to a circuit control protector, which can synchronously act by pressing a button to swing, push and pull a contact piece to jump, and enable a circuit loop to form a power-on or power-off state. The method is characterized in that: one end of the button is embedded into one end of the linkage rod piece, the clamping groove at the other end of the linkage rod piece is movably clamped on the contact piece, the side edge of the linkage rod piece elastically abuts against the inclined surface of a protruding part, and during action, the button swings to link the linkage rod piece so that the linkage rod piece moves up and down and left and right; when the button is positioned at the position of circuit conduction , the linkage rod piece moves transversely to one side of the clamping groove to separate from the clamping contact piece, so that the contact piece can freely jump to one side of the clamping groove; when the circuit is in an ON state and the current is overloaded, the contact piece is heated to deform and bounce in the reverse direction, and is not clamped and limited by the clamping groove of the linkage rod piece, so that the contact piece can be smoothly tripped, a complete power-OFF (OFF) state of a circuit loop is formed, and the safety of power utilization is ensured.

Description

Circuit Control Protector

technical field

The invention relates to a circuit control protector, which utilizes the side of the linkage rod to elastically abut against the slope of a raised part, and when the button is pressed, the relative lateral displacement between the linkage rod and the contact piece is made. When the button is at the position of circuit conduction (ON), the interlocking rod is laterally displaced to one side of the clamping groove to break away from the state of clamping the contact piece, so that the contact piece can freely escape to one side of the clamping groove; In the ON state, when the current is overloaded, the contact piece is thermally deformed and bounces backwards, not limited by the clamping groove of the linkage rod, the contact piece can jump off smoothly, forming a complete power failure (OFF) of the circuit circuit state.

Background technique

The operation of the power control switch is mainly to perform two actions of power-on (ON) and power-off (OFF) of the current loop. In addition to performing two functions of power-on (ON) and power-off (OFF), many current switch structures also have the function of automatically tripping and power-off when the current is overloaded and overheated, so as to prevent the fuse or breaker of the current circuit from not responding in real time when the current is overloaded. Risk of blackout or tripping.

There are too many patents for various commonly used power control switches, such as the US Patent No. 5,262,748 applied by the applicant himself, other US Patents No. 4,167,720, No. 4,937,548, No. 5,223,813, No. 5,451,729, No. 5,558,211, etc. enumeration, but all such patents have common shortcomings, as follows:

1. There are many linked components, and the linked stroke is complicated, resulting in a non-real-time actuation relationship between the button and the terminal components, which also increases the manufacturing cost.

2. The actuation relationship is not accurate, which increases the chance of failure, which is not conducive to the safety considerations of consumers.

3. When the current overload circuit is overheated, the contact shrapnel cannot trip off the power in real time or the trip is incomplete, so that the circuit is still in the current conduction state, and the circuit continues to overheat and cause danger.

4. When the current overload circuit is overheated, the contact shrapnel is in a semi-tripped state, and when the contact shrapnel cools down, it jumps back to the energized state, and sparks are formed after repeated power-on and power-off, causing danger; and the electronic and electrical equipment in the current loop are due to Repeated power-on and power-off, and the power-on may not work normally, shortening the service life, or even being damaged so that it cannot be used.

In order to effectively implement the interlocking relationship between the internal components of the power control switch, simplify the power control switch components to reduce production costs, and ensure immediate response to trip the power when the current is overloaded to enhance power safety, the continuous research and improvement of the power control switch structure It has become an important common topic for manufacturers.

Contents of the invention

Technical problems to be solved by the invention:

The present invention aims to solve the disadvantages of common power control switch linkage structures, such as complex components, high production cost, indirect linkage relationship, slow response of linkage stroke and many faults in the operation of power control switches, especially to solve the shortcomings of commonly used power control switches in When the current is overloaded and overheated, it is impossible to trip the power-off (OFF) in real time, or the trip is incomplete, resulting in an overheating state where the circuit continues to flow; and when solving overload and overheating, the contact shrapnel is in a semi-tripped state, and when the contact shrapnel cools down Sometimes it jumps back to the power-on state, and continues to repeatedly power on and off to form sparks, causing dangerous problems.

Technical means to solve the problem:

The invention is a circuit control protector, which mainly includes a box body, a button, a contact piece, and a linkage rod; The clamping groove at one end is movably clamped on the contact piece, and the side of the linkage rod is resiliently pressed against the slope of a raised part. When in motion, the button swings to link the linkage rod, so that the linkage rod moves forward. Displacement up and down, left and right; when the button is in the ON position, the linkage rod moves laterally to one side of the clamping groove and breaks away from the clamping contact piece, so that the contact piece can freely jump out to one side of the clamping groove ; In the state of circuit conduction (ON), when the current is overloaded, the contact piece is deformed by heat and bounces backwards, not limited by the clamping groove of the linkage rod, the contact piece can jump off smoothly, forming a complete break of the circuit circuit Power (OFF) state.

The purpose of the invention and the effect of technical means:

The present invention is a circuit control protector, the main purpose of which is to elastically abut against the slope of a raised part through the side of the linkage rod, and when in operation, the button swings to link the linkage rod, Make the linkage rod move up and down, left and right; when the button is in the position of circuit conduction (ON), the linkage rod moves laterally to one side of the clamping groove and breaks away from the clamping contact piece, so that the contact piece can be clamped One side of the slot is free to jump out; in the ON state of the circuit, when the current is overloaded, the contact piece is heated and deformed to bounce back, and is not limited by the clamping groove of the linkage rod, so the contact piece can jump off smoothly. Form a complete power-off (OFF) state of the circuit loop to achieve the purpose of electricity safety.

Another purpose of the present invention is that when the current overload circuit is overheated, the contact shrapnel reacts quickly and jumps off, and is in a completely de-energized state, so as to prevent the contact shrapnel from jumping back to the energized state when it cools down, and will not continue to repeatedly energize and disconnect Electricity may cause contact sparks and cause danger.

The extension purpose of the present invention is to simplify the overall interlocking components of the power control switch, which is easy to assemble, can effectively reduce the manufacturing cost, prolong the service life of the power control switch structure, and reduce the expenditure of consumers.

Description of drawings

Fig. 1 is the composite sectional view of the embodiment of the present invention, and it shows the state of the power failure (OFF) of the embodiment of the present invention;

Fig. 2 is the composite cross-sectional view of the embodiment of the present invention, it shows the state of the electrification (ON) of the embodiment of the present invention;

Fig. 3 is a combined cross-sectional view of the embodiment of the present invention, which shows that in the embodiment of the present invention, when the current is overloaded in the case of energization (ON), the contact piece bends in the opposite direction and jumps off, pushing the linkage rod to displace freely, and becoming a power failure (OFF) state;

Fig. 4 is a cross-sectional view of another section of Fig. 1, which shows the combined state of the interlocking rod, the inclined surface of the interlocking rod and the raised part of the cover, the relative positional relationship between the clamping groove of the interlocking rod and the contact piece;

Fig. 5 is a partial perspective exploded view of the embodiment of the present invention, which shows the relative combination state of the interlocking rod, the inclined surface of the raised part of the cover, the clamping groove of the interlocking rod and the contact piece;

Fig. 6 is a cross-sectional view of another section of Fig. 2, which shows that the contact piece is not restricted by the clamping groove of the linkage rod, and can freely deform upwards and escape;

FIG. 7 is a combined cross-sectional view of the second embodiment of the present invention, which shows the power-off (OFF) state of the embodiment of the present invention;

Fig. 8 is a cross-sectional view of another section of Fig. 7, which shows the combined state of the interlocking rod, the inclined surface of the interlocking rod and the raised part of the box, the relative positional relationship between the clamping groove of the interlocking rod and the contact piece;

FIG. 9 is a combined cross-sectional view of Embodiment 2 of the present invention, which shows the state of power-on (ON) of the embodiment of the present invention;

Fig. 10 is a cross-sectional view of another section of Fig. 9, showing the combined state of the interlocking rod, the inclined surface of the interlocking rod and the convex part of the box, the relative positional relationship between the clamping groove of the interlocking rod and the contact piece; The contact piece is not limited by the clamping groove of the linkage rod, and can freely deform upwards and jump off;

11 is a combined cross-sectional view of Embodiment 2 of the present invention, which shows that when the current is overloaded in the case of energization (ON) in Embodiment 2 of the present invention, the contact piece reversely bends and trips to become the state of power-off (OFF). in the picture

1 box body 10 covers

101 Raised part 102 Raised rod

11 first contact terminal 12 second contact terminal

121 second contact 13 convex part

14 convex part 15 convex part

2 buttons 21 extension pieces

22 buckle holes 3 contact pieces

31 First contact 32 Arc shrapnel

33 Adjusting screw 4 Linkage rod

41 Connecting part (rod) 42 Elastic part (coil spring)

43 Clamp groove 44 Elastic piece

441 upper end 442 lower end

Detailed ways

In order to reveal the purpose, features and effects of the present invention in detail, the present invention will be described in detail through the following preferred specific embodiments in conjunction with the accompanying drawings:

As shown in Figures 1-3, it is a combined cross-sectional view of the embodiment of the present invention, which shows the power-off (OFF), power-on (ON) and current overload of the embodiment of the present invention. ) state; a circuit control protector of the present invention, which mainly includes a box body 1, a button 2, a contact piece 3, and a linkage rod 4; wherein,

The box body 1 is hollow, with an opening above it, and at least two contact terminals are arranged on the bottom surface of the box body 1, in this embodiment, there are two contact terminals, which are respectively the first and second contact terminals 11, 12, One end of the contact piece 3 is fixedly arranged on the bending part above the first contact terminal 11, and a second contact point 121 is combined above the second contact terminal 12. There are convex parts 13 and 14 inside the box body 1, and the convex parts 13 and 14 are located in the linkage Both sides of the rod 4 are used to guide the displacement direction of the linkage rod 4; the side opening of the box body 1 is provided with a cover 10, and the inner surface of the cover 10 is provided with a raised portion 101, and the raised portion 101 has an inclined surface .

The button 2 is a cap-shaped body, and the button 2 is movably pivoted to the opening above the box body 1, so that the button 2 can swing with the pivot joint as the axis; an extension piece 21 is arranged below the button 2, and the extension piece 21 A button hole 22 is provided.

The contact piece 3 is an elastic metal sheet body, which is formed into a curved arc and can jump to both sides of the sheet body. When the contact piece 3 is heated, it deforms and bends in reverse and bounces to the other side; one end of the contact piece 3 is fixed. It is arranged on the first contact terminal 11, and the other end is a free end, on which there is a first contact 31; the contact piece 3 can also be a composite metal sheet; refer to Fig. 1-3 again, the embodiment of the present invention can be used in contact The free end of the piece 3 is movably buckled with an arc-shaped elastic piece 32, and the other end of the arc-shaped elastic piece 32 is movably embedded in the adjusting screw 33 on the box body 1. By adjusting the adjusting screw 33, the arc-shaped elastic piece 32 has proper elasticity. Force, when the contact piece 3 bounces to one side, it can be definitely bent and positioned.

One end of the linkage rod 4 is a connecting portion 41. In the embodiment of the present invention, the connecting portion 41 is a transverse rod. Referring to FIG. It is a helical spring, and the front end of the connecting part (rod) 41 is threaded and assembled in the fastening hole 22 of the button 2, so that the connecting part (rod) 41 can elastically stretch and displace in the fastening hole 22, and the connecting part (rod) 41 The end that passes through the buckle hole 22 can be riveted into an enlarged fixed end or fixed with a rivet or a nut (not shown in the figure); the side of the linkage rod 4 corresponds to the raised portion on the inner side of the aforementioned cover 10 101, through the elastic force of the elastic member (coil spring) 42 set by the aforementioned connecting portion (rod member) 41, the side of the linkage rod member 4 elastically abuts against the cover body 10 of the aforementioned box body 1 The slope of the protrusion 101 on the inner side; the other end of the linkage rod 4 is provided with a clamping groove 43, the upper side of the clamping groove 43 is shorter and shallower than the lower side, and the clamping groove 43 is movably clamped and connected to the contact piece 3 The free end, refer to Figure 4, Figure 5.

For the implementation of the present invention in general power-on (ON) and power-off (OFF), please refer to Figure 1, when the right end of the button 2 is pressed downward, the left end of the button 2 is upward, and the clamping groove 43 of the linkage rod 4 will contact the contact piece 3 Pull up to make the first contact 31 on the contact piece 3 separate from the second contact 121 to be in a power-off (OFF) state.

When the left end of the button 2 is pressed down, the clamping groove 43 of the linkage rod 4 pushes the contact piece 3 downward, so that the first contact 31 on the contact piece 3 contacts the second contact 121 downward, and becomes energized (ON) state, as shown in Figure 2.

Repeatedly press the button 2 to swing, so that the linkage rod 4 and the button 2 act synchronously, and the clamping groove 43 of the linkage rod 4 pushes and pulls the contact piece 3 to bend and jump up and down, so that the circuit loop is energized (ON) or de-energized (OFF) state.

The present invention is characterized in that: the connecting portion (rod) 41 of the interlocking rod 4 is sleeved with an elastic member (coil spring) 42, so that the connecting portion (rod) 41 is embedded in the fastening hole 22 of the button 2, The clamping groove 43 at the other end of the interlocking rod 4 is movably clamped on the contact piece 3, and the side of the interlocking rod 4 elastically abuts against the slope of the raised portion 101 of the cover 10 of the box body 1; during operation, the button 2 Swing and move the linkage rod 4 up and down, cooperate with the side of the linkage rod 4 to abut against the slope of the raised part 101, so that the linkage rod 4 performs right and left lateral displacement at the same time; When the button 2 is in the position of circuit conduction (ON), as shown in Fig. 2, the linkage rod 4 is displaced downwards, and laterally outward (to the left) relative to the contact piece 3, so that the upper side of the clip groove 43 The edge breaks away from the state of clamping the contact piece 3, as shown in Figure 6, at this moment, the upper side direction of the clamp groove 43 can freely jump off the contact piece 3; under the circuit conduction (ON) state, when the current is overloaded, The contact piece 3 is deformed by heat and bounces backwards, and is not restricted by the upper side of the clamping groove 43 of the interlocking rod 4. The contact piece 3 can smoothly jump upwards, so that the first contact 31 is separated from the second contact 121, forming a The complete power-off (OFF) state of the circuit loop is shown in FIG. 3 .

Also refer to Fig. 7-11, which is a combined cross-sectional view of the second embodiment of the present invention, showing the state of its circuit conduction (ON), disconnection (OFF) and overload tripping (TRIP-FREE); the second embodiment of the present invention mainly includes: A box body 1, a button 2, a contact piece 3 and a linkage rod 4 have the same main structure as the previous embodiment, and the minor differences are as follows:

The inside surface of the box body 1 is provided with a protruding portion 15, and the side of the protruding portion 15 facing the linkage rod 4 has an inclined surface, see Fig. 8 and Fig. 10; the opening of the box body 1 is provided with a cover body 10, A protruding rod 102 extends inwardly.

The button 2 is the same as the foregoing embodiment.

The contact piece 3 is the same as the previous embodiment.

One end of the linkage rod 4 is a connecting portion 41, which is a transverse rod. Referring to FIG. 8 and FIG. The outer side of the linking rod 4 abuts against an elastic piece 44; wherein, the middle section of the elastic piece 44 is set on the protruding rod 102 of the aforementioned cover 10, the upper end 441 of the elastic piece 44 is abutted against the inner side of the button 2, and the lower end 442 is abutted against the inner side of the button 2. Push against the outer side of the linkage rod 4, push the linkage rod 4 through the elastic force of the elastic member 44, so that the connecting part (rod) 41 can be elastically stretched and displaced in the fastening hole 22; the linkage rod The inside hypotenuse of the part 4 corresponds to the slope of the protrusion 15 on the inside of the box body 1, and the elastic force of the elastic part 44 makes the inside hypotenuse of the linkage rod part 4 elastically abut against the protrusion of the box body 1. The slope of the riser 15.

In the second embodiment of the present invention, the operation of pressing the button is the same as the previous embodiment; in the implementation of general power on (ON) and power off (OFF), please refer to Figure 7, Figure 8, Figure 9, and Figure 10, and repeatedly press the button 2 Swing to make the linkage rod 4 and the button 2 act synchronously, and the clamping groove 43 of the linkage rod 4 pushes and pulls the contact piece 3 to bend and jump up and down, so that the circuit loop forms a power-on (ON) or power-off (OFF) state .

In the second embodiment of the present invention, the inner side of the interlocking rod 4 elastically abuts against the slope of the raised portion 15 in the box body 1; when in action, the button 2 swings to move the interlocking rod 4 up and down. Downward displacement, at the same time, the inner side of the linkage rod 4 abuts against the slope of the raised part 15 of the box body 1, forming a left and right lateral displacement; when the button 2 is in the position of the circuit conduction (ON), as Fig. 9, Fig. 10, the interlocking rod 4 is displaced downward, and is moved laterally to the right by the inclined surface of the protrusion 15 of the box body 1, and laterally moves outward (to the right) relative to the contact piece 3, so that the clamping groove The upper side of 43 breaks away from the state of clamping contact piece 3, as shown in Figure 10, this moment, this contact piece 3 can jump off freely to the upper side direction of clip groove 43; When the current is overloaded, the contact piece 3 is deformed by heat and bounces in the opposite direction, and is not limited by the clamping on the upper side of the clamping groove 43 of the linkage rod 4. The contact piece 3 can smoothly jump upwards, so that the first contact 31 and the second contact 121 is separated to form a completely power-off (OFF) state of the circuit loop, as shown in FIG. 11 .

The action process of the present invention is simplified and rapid; when the current is overloaded, it is not hindered by the action of the switch assembly, and the contact piece 3 can jump off smoothly, forming a complete power-off (OFF) state of the circuit loop, which can indeed achieve power consumption. safety.

From the above, the component structure and action relationship of the present invention do have practical effects, and it is an unprecedented new design, which is functional and progressive.

The present invention has been described in detail above, and the above descriptions are only preferred embodiments of the present invention, and cannot limit the implementation scope of the present invention. That is, all equivalent changes and modifications made according to the scope of application of the present invention should still fall within the scope of the patent of the present invention.

Claims (10)

1. The invention relates to a circuit control protector, which is characterized by mainly comprising a box body, a button, a contact piece and a linkage rod piece; wherein,

the box body is hollow, an opening is arranged above the box body, and at least two contact terminals are arranged on the bottom surface of the box body; the inner side of the box body is provided with a bulge, and the bulge is provided with an inclined plane;

the button is movably pivoted to the opening above the box body, and the button can swing by taking the pivoting part as an axis; the button is provided with a buckling hole;

the contact piece is an elastic metal sheet body, is formed into an arc shape and can jump to two side surfaces of the sheet body, and the contact piece deforms and bends reversely when being heated and bounces to the other side surface; one end of the contact piece is fixedly arranged on a contact terminal, and the other end of the contact piece is provided with a first contact point;

one end of the linkage rod piece is a connecting part, the connecting part is movably embedded into the buckling hole of the button, and the linkage rod piece is provided with an elastic piece to enable the connecting part to elastically stretch and displace in the buckling hole; one side edge of the linkage rod piece corresponds to the inclined plane of the convex part on the inner side surface of the box body, and one side edge of the linkage rod piece is elastically abutted against the inclined plane of the convex part through the elastic force of the elastic piece assembled by the connecting part; the other end of the linkage rod piece is provided with a clamping groove which movably clamps the contact piece;

wherein: the connecting part of the linkage rod piece is movably embedded into the buckling hole of the button, the clamping groove at the other end of the linkage rod piece clamps the contact piece, and one side edge of the linkage rod piece elastically abuts against the inclined surface of the bulge part; when the linkage rod piece moves, the button swings to link the linkage rod piece to move up and down, and one side edge of the linkage rod piece is abutted against the inclined surface of the boss part, so that the linkage rod piece simultaneously moves transversely; when the button is positioned at the position of circuit conduction (ON), the linkage rod piece is transversely displaced relative to the contact piece, so that one side edge of the clamping groove is separated from the state of clamping the contact piece, and the contact piece can freely jump to the side edge direction of the clamping groove; when the circuit is in an ON state and the current is overloaded, the contact piece is heated to deform and bounce in the reverse direction, and is not clamped and limited by the clamping groove of the linkage rod piece, so that the contact piece can smoothly jump upwards to separate the contact points of the circuit, and a complete power-OFF (OFF) state of the circuit loop is formed.

2. The circuit control protector according to claim 1, wherein the case has at least two contact terminals, respectively a first contact terminal and a second contact terminal, the first contact terminal has a bent portion for fixing one end of the contact piece, and the second contact terminal has a second contact point coupled thereto.

3. A circuit control protector according to claim 1 wherein an extension piece is provided beneath the button, the extension piece being provided with a snap-fit hole.

4. The circuit control protector of claim 1, wherein the contact piece is a composite metal sheet.

5. The circuit control protector according to claim 1, wherein the case body has a side opening provided with a cover body, and the cover body has an inner side surface provided with a protrusion having a slope.

6. The circuit control protector according to claim 1, wherein the link member has a connecting portion at one end thereof, the connecting portion being assembled with an elastic member, the front end of the connecting portion being inserted into the engaging hole of the button to elastically and telescopically displace the connecting portion in the engaging hole; the rear end of the linkage rod piece corresponds to the inclined plane of the convex part, and the rear end of the linkage rod piece is elastically abutted against the inclined plane of the convex part through the elastic force of the elastic piece.

7. The circuit control protector according to claim 6, wherein the connecting portion of the interlocking lever member is a transverse lever member.

8. The circuit control protector according to claim 6, wherein the elastic member of the linking member is a coil spring.

9. The circuit control protector according to claim 1, wherein the clip groove of the interlocking lever member is shorter on one side relative to the other side.

10. The circuit control protector according to claim 1, wherein the upper end of the elastic member abuts against the inner side of the button, and the lower end abuts against the outer side edge of the link rod member;

the side inclined edge of the linkage rod piece is elastically abutted against the inclined surface of the bulge part of the box body through the elastic force of the elastic piece.

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