CN1301524C - Circuit Control Protector - Google Patents

Abstract

The invention is a circuit control protector, which is characterized in that a button is pressed to swing, so that a linkage rod piece synchronously acts, a contact piece is pushed and pulled to jump, and a circuit loop forms a power-on or power-off state, wherein: the button connecting part is correspondingly embedded and assembled in the button hole of the linkage rod piece, the button hole is provided with an extending groove, one end of the linkage rod piece is movably connected with the contact piece, when the button is positioned at the position of conducting the circuit, the opening end of the extending groove of the linkage rod piece corresponds to the button connecting part, and the extending groove provides a free displacement path so that the extending groove and the connecting part of the button can relatively freely displace; when the current is overloaded, the contact piece is heated to deform and bounce reversely, the contact piece pushes the linkage rod piece to move, the contact piece is not obstructed by the button connecting part and the buckling hole, the contact piece can be smoothly tripped, a complete power-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. Between the button and the linkage rod, an extended groove is set to provide a free displacement path; when the current is overloaded, the contact piece is heated and deformed to bounce back, and the contact piece pushes the linkage rod to move, and the linkage rod passes through it. The extended groove allows the linkage rod to move freely relative to the button without being hindered by the button connection part and the button hole, and the contact piece can jump off smoothly, forming a complete power-off (OFF) state of the circuit circuit.

Background technique

The operation of the power control switch is mainly to perform two actuation strokes of energizing (ON) and deenergizing (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 various patents on known power control switches, such as US Patent No. 5,262,748 filed 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. , but the aforementioned patents all have the following shortcoming in common:

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

2. The action relationship is not accurate, which increases the chance of failure and is not conducive to the safety 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 shutdown or failure to operate normally, shorten the service life, or even damage and make it unusable.

In order to effectively implement the interlocking action relationship of the internal components of the power control switch, simplify the power control switch components to reduce production costs, and ensure real-time response to tripping when the current is overloaded to enhance power safety, the continuous research and improvement of the power control switch structure has become An important common issue for manufacturers.

Contents of the invention

The present invention aims to solve the shortcomings of the known power control switch interlocking structure, such as complex components, high production cost, indirect interlocking relationship, slow response of interlocking stroke and many faults in the operation of the power control switch, especially in solving the shortcomings of the known power supply control switch. When the control switch is overheated due to current overload, it cannot trip off in real time (OFF) or the trip is incomplete, resulting in an overheating state in which the circuit continues to flow; and when solving overload and overheating, the contact shrapnel is in a semi-tripped state. When the contact shrapnel cools down It jumps back to the power-on state again, and continues to repeatedly power on and off to form sparks, causing dangerous problems.

The present invention is a circuit control protector, the main purpose of which is to set an extended groove in the button hole of the linkage rod. When the button is in the energized (ON) position, the linkage rod and the button have a relatively free displacement. Path, when the current is overloaded, the contact piece is heated and deformed and bounces back to push the linkage rod to move. Through the extension groove of the linkage rod, the linkage rod can be freely displaced relative to the button, and is not affected by the button and the linkage rod. Without the obstruction of the buttonhole of the component, the contact piece can jump off smoothly, forming a complete power failure (OFF) of the circuit loop, and achieving the purpose of electricity safety.

Another object 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 power off Dangerous due to the formation of contact sparks.

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.

The technical means to solve the problem of the present invention is a circuit control protector, which mainly includes a box body, a button, a contact piece, and a linkage rod; its feature is that the button connection part is correspondingly embedded in the linkage rod The button hole is provided with an extension groove, and one end of the linkage rod is movably connected to the contact piece. When the button is in the position of circuit conduction (ON), the opening of the extension groove of the linkage rod corresponds to At the connection part of the button, the extension groove provides a free displacement path, so that the extension groove and the button can be relatively free to move; when the current is overloaded, the contact piece is heated and deformed and bounces back, and the contact piece pushes the linkage rod to move , through the extension groove of the linkage rod, the linkage rod can be freely displaced relative to the button without being hindered by the button and the button hole, and the contact piece can be smoothly escaped, forming a complete power-off (OFF) of the circuit loop )state.

Description of drawings

Fig. 1 is the combined sectional view of the embodiment of the present invention, it shows the power-off (OFF) state of the embodiment of the present invention;

Fig. 2 is the combined sectional view of the embodiment of the present invention, and it shows the energization (ON) state 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 move freely, and becomes the power-off (OFF) state ;

FIG. 4 is a partially exploded perspective view of the embodiment of the present invention, which shows the relative combination state of the button, the linkage rod and the contact piece.

in the picture

1 box body 11 first contact terminal

12 second contact terminal 121 second contact protrusion

13 convex rod

2 button 21 connection part (rod)

3 contact piece 31 first contact

4 linkage rods 41 clip slots

42 buttonhole 43 extension groove

Detailed ways

In order to describe in detail the purpose, features and effects of the present invention, through the following preferred specific embodiments, in conjunction with the accompanying drawings, the present invention is described in detail as follows:

As shown in Figures 1-3, it is a combined cross-sectional view of the embodiment of the present invention, which shows the embodiment of the present invention when the power-off (OFF), power-on (ON) and current overload, the contact piece reversely bends and jumps into a power-off ( OFF) state; a circuit control protector of the present invention 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 and 12. One end of the contact sheet 3 is fixedly assembled on the bending part above the first contact terminal 11, and a second contact point 121 is combined above the second contact terminal 12; The side of the moving rod 4 is in movable contact to guide the displacement direction of the linkage rod 4 .

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 pivoting part as the axis; the button 2 is provided with a connecting part 21, in the embodiment of the present invention The connecting portion 21 is a rod extending laterally inside the button 2 ; the connecting portion 21 is correspondingly movably embedded in the button hole 42 of the linkage rod 4 , and the button hole 42 is extended outwardly with an extending groove 43 .

The contact piece 3 is generally an elastic metal sheet body, which is formed into a curved arc and can jump to the two sides of the sheet body. When the contact piece 3 is heated, it deforms and bends in reverse and bounces to the other side; The fixed group is set on the first contact terminal 11, and the other end is a free end on which the first contact 31 is arranged; the contact piece 3 can also be a composite metal sheet.

The interlocking rod 4 is in the shape of a long plate, one end of which is provided with a clamping groove 41, and a button hole 42 is arranged on the plate, and the button hole 42 is extended outward to set an extension groove 43, and the interlocking rod 4 One side is adjacent to the inner surface of the box body 1; the clamping groove 41 at one end of the linkage rod 4 is clamped and connected to the free end of the contact piece 3, and the button 2 of the button hole 42 of the linkage rod 4 is movable. Connecting part (transverse bar) 21, refer to FIG. 4 .

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 linkage rod 4 pulls the contact piece 3 upward , so that the first contact 31 on the contact piece 3 is separated 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 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 an ON state, as shown in the figure 2.

Pressing the button 2 repeatedly in this way makes the linkage rod 4 and the button 2 act synchronously, and 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.

The present invention is characterized in that: the connecting portion (horizontal rod) 21 of the button 2 is correspondingly embedded in the button hole 42 of the linkage rod 4, the button hole 42 is provided with an extension groove 43, and one end of the linkage rod 4 The clamping groove 41 of the clamping groove 41 is movable clamped and connected to the contact piece 3. When the button 2 is in the position of circuit conduction (ON), referring to Fig. 2 and Fig. 3, the opening of the extending groove 43 of the linkage rod 4 corresponds to the button 2, so that the extension groove 43 provides a relatively free displacement path for the connection portion 21 of the button 2, and the extension groove 43 and the button 2 can move relatively freely without blocking each other; when the current is overloaded, the contact piece 3 is heated The deformation reversely bounces, and the contact piece 3 directly pushes the displacement of the linkage rod 4 without being hindered by the connection part 21 of the button 2 and the button hole 42. The first contact 31 is separated from the second contact 121 to form a complete power-off (OFF) state of the circuit loop, as shown in FIG. 3 .

The actuation process of the present invention is simplified and rapid; when the current is overloaded, it is not hindered by the actuation 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. security.

The present invention has been described in detail above, and the above description is only a preferred embodiment 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 application scope of the present invention should still belong to the scope of patent protection of the present invention.

Claims (5)

1. A circuit control protector mainly comprises 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 button is movably pivoted to the opening above the box body, and swings by taking the pivoting part as an axis; the button is provided with a connecting part which is movably embedded in the buckling hole of the linkage rod piece correspondingly;

the contact piece is an elastic metal sheet body which 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 assembled 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 movably clamped and connected with the contact piece, and a buckling hole is arranged on the linkage rod piece and is provided with an extending groove in an extending way;

the method is characterized in that: the connecting part of the button is correspondingly embedded and assembled in the buckling hole of the linkage rod piece, the buckling hole is provided with an extension groove, one end of the linkage rod piece is movably connected with the contact piece, when the button is positioned at the position of circuit conduction, the opening of the extension groove of the linkage rod piece corresponds to the connecting part of the button, and the extension groove provides a section of path of relative free displacement for the connecting part of the button, so that the extension groove and the button can relatively freely displace without blocking; when the current is overloaded, the contact piece is heated to deform and bounce reversely, the contact piece directly pushes the linkage rod piece to move, the contact piece is not obstructed by the button connecting part and the buckling hole, and the contact piece can smoothly and directly jump off to form a complete power-off state of a circuit loop.

2. The circuit control protector according to claim 1, wherein the case has at least two contact terminals, which are a first contact terminal and a second contact terminal, respectively, the first contact terminal has a bent portion at an upper portion thereof for fixedly assembling an end of the contact piece, and the second contact terminal has a second contact point at an upper portion thereof.

3. The circuit control protector according to claim 1, wherein said contact plate is a composite metal sheet.

4. The circuit control protector according to claim 1, wherein the link member is in the form of a plate having a holding groove formed at one end portion thereof, the holding groove being adapted to be movably held at a free end portion of the contact piece.

5. The circuit control protector according to claim 1, wherein a protruding rod is provided inside the case, the protruding rod movably contacting with a side surface of the link member for guiding a displacement direction of the link member.

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