CN1314064C - Circuit control protector - Google Patents

Abstract

The invention relates to a circuit control protector, which is characterized in that a linkage rod piece moves synchronously by pressing a button to swing, a contact piece is pushed and pulled to jump, and a circuit loop forms an ON state or an OFF state. The invention is characterized in that: the button is provided with a buckling hole, the buckling hole is provided with an extending groove, one end of the linkage rod piece is movably connected to the contact piece, the other end of the linkage rod piece is movably embedded into the buckling hole of the button, and when the button is positioned at the position where the circuit is conducted ON, the extending groove of the buckling hole provides a free displacement space for the other end of the linkage rod piece; when the circuit is conducted ON and the current is overloaded and the contact piece is heated to deform and reversely bounce, the contact piece pushes the linkage rod piece to displace, and the other end of the linkage rod piece can freely displace in the extension groove without being blocked by the button, so that the contact piece can smoothly bounce OFF to form a complete power-OFF state of a circuit loop, and the safety of power utilization is ensured.

Description

Circuit Control Protector

technical field

The invention relates to a circuit control protector, which is provided with an extended groove between the button and the linkage rod to provide a space for free displacement; The moving rod is displaced, and the other end of the linkage rod can freely displace in the extension groove without being hindered, and the contact piece can jump off smoothly, forming a complete power-off OFF state of the circuit loop.

Background technique

The operation of the power control switch is mainly to perform two movement modes of power ON and power OFF of the current loop. In addition to performing the two functions of power-on and power-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 loop from not responding in real time to power-off or power-off when the current is overloaded. Danger of escape.

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

There are many interlocking elements, and the interlocking stroke is complex, resulting in a non-real-time motion relationship between the key and the terminal element, which also increases the manufacturing cost.

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

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.

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 , power failure, and the machine crashes or cannot operate normally, shortening the service life, or even being damaged and cannot be used.

In order to effectively implement the interlocking motion 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

Technical problems to be solved by the invention:

The present invention aims to solve the shortcomings of common power control switch interlocking structures, such as complicated components, high production cost, indirect interlocking relationship, slow response of interlock stroke and many faults in the operation of power control switches, especially in solving the problems of commonly used power control switches. When the current is overloaded and overheated, it is impossible to trip off the power OFF in real time or the trip is not complete, resulting in the overheating state of the continuous circulation of the circuit; and when solving the 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.

Technical means to solve the problem:

The present invention is a circuit control protector, which mainly includes a box body, a button, a contact piece, and a linkage rod; it is characterized in that: the button is provided with a buckle hole, and the buckle hole is provided with an extension groove, One end of the linkage rod is movably connected to the contact piece, and the other end of the linkage rod is movably embedded in the buckle hole of the button. When the button is in the ON position of the circuit, the extended groove of the buckle hole provides the linkage The free displacement space at the other end of the rod; during implementation, when the current is overloaded in the ON state of the circuit, when the contact piece is heated and deformed and bounces back, the contact piece pushes the linkage rod to move, and the linkage rod The other end can be freely displaced in the extension groove without being hindered by the button, and the contact piece can be smoothly escaped to form a complete power-off OFF of the circuit loop.

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 set an extension groove through the button buckle hole, and the extension groove of the buckle hole provides a space for free displacement of the end of the linkage rod, and when the current overload In this state, the contact sheet is deformed by heat and bounces back to push the linkage rod to move, and the other end of the linkage rod can move freely in the extension groove without being hindered by the button and the buckle hole, and the contact sheet can be real-time and smooth. The ground is completely tripped, forming a complete power-off OFF of the circuit loop, so as to achieve 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 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 a combined cross-sectional view of an embodiment of the present invention, which shows the state of the power-off OFF of the embodiment of the present invention;

FIG. 2 is a combined cross-sectional view of an embodiment of the present invention, which shows the 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 when the power is ON, the contact piece bends in the opposite direction and jumps off, pushing the linkage rod to move freely, and becomes the state of power-off OFF;

Fig. 4 is a partial perspective exploded view of the embodiment of the present invention, which shows the relative combination state of the fastening hole, the extension groove and the linkage rod;

Fig. 5 is a partial enlarged view of Fig. 1, which shows the relative positions of the fastening hole, the extension groove and the linkage rod;

Fig. 6 is a partial enlarged view of Fig. 2, which shows the relative positions of the fastening hole, the extension groove and the linkage rod;

FIG. 7 is a partial enlarged view of FIG. 3 , which shows the relative positions of the fastening hole, the extension groove and the linkage rod.

in the picture

1 box body 11 first contact terminal

12 second contact terminal 121 second contact

2 buttons 21 extension pieces

22 button hole 23 extension groove

3 contact piece 31 first contact

32 Arc shrapnel 33 Adjusting screw

4 linkage rods 41 clip slots

42 bars

Detailed ways

In order to disclose the purpose, characteristics and effects of the present invention in detail, the present invention is described in detail as follows 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 state of the embodiment of the present invention when the power is OFF, the power is ON, and the contact piece is reversely bent and jumps into the power OFF OFF state; A circuit control protector, 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 and 12. One end of the contact sheet 3 is fixedly assembled on the bent portion above the first contact terminal 11 , and a second contact 121 is combined above the second contact terminal 12 .

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 fastening hole 22 is provided, and the fastening hole 22 is extended outwardly to form an extending groove 23 .

The contact piece 3 is 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; one end of the contact piece 3 is fixed. It is assembled 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 The free end of the contact piece 3 is movably buckled with an arc-shaped shrapnel 32, and the other end of the arc-shaped shrapnel 32 is movably embedded in the adjusting screw 33 on the box body 1. After adjusting the adjusting screw 33, the arc-shaped shrapnel 32 has an appropriate The elastic force, when the contact piece 3 bounces to one side, can be bent and positioned surely.

The interlocking rod 4 is in the shape of a long strip, one end of which is provided with a clamping groove 41, and the other end is provided with a cross bar 42; the clamping groove 41 at one end of the interlocking rod 4 is movable and connected to the contact piece 3 The free end of the linkage bar 4 is movably embedded in the fastening hole 22 of the button 2, as shown in FIG. 4 .

The implementation of the present invention in the general power-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 contact piece 3 The first contact 31 on the top is separated from the second contact 121 to be in an 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 FIG. 2 .

Pressing the button 2 repeatedly in this way makes the linkage rod 4 and the button 2 move 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 is turned on or off.

The present invention is characterized in that: the buckle hole 22 of the button 2 is provided with an extension groove 23, the clamping groove 41 at one end of the linkage rod 4 is movable clamped and connected to the contact piece 3, and the cross bar 42 at the other end of the linkage rod 4 Movably embedded in the buckle hole 22 of the button 2; when the button 2 is in the ON position, the extended groove 23 of the buckle hole 22 provides a space for the free displacement of the crossbar 42 at one end of the linkage rod 4, refer to FIG. 2 , Fig. 6; when the current is overloaded, the contact piece 3 is heated and deformed and bounces backward, the contact piece 3 directly pushes the displacement of the linkage rod 4, and the cross bar 42 at the other end of the linkage rod 4 can be extended in the groove Free displacement in 23, as shown in Fig. 3 and Fig. 7, is not hindered by the buckle hole 22 or the button 2, and the contact piece 3 is able to jump off smoothly, forming a complete power-off OFF state of the circuit loop.

The movement process of the present invention is simplified and rapid; when the current is overloaded, the contact piece 3 is not hindered by the movement of the switching element, and the contact piece 3 can be smoothly tripped, forming a complete power-off OFF state of the circuit circuit, and the safety of electricity consumption can be achieved.

From the above, the element structure and motion relationship of the present invention do have practical effects, and are functional and progressive.

The present invention has been described in detail above, and the above description is only a preferred embodiment of the present invention, and cannot be used to 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 shall be included in the scope of the patent of the present invention.

Claims (5)

1. A circuit control protector, characterized in that it includes a box body, a button, a contact piece, and a linkage rod; it is characterized in that, The box body is hollow, with an opening above it, 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 the button swings with the pivot joint as the axis; the button is provided with a buckle hole, and the buckle hole is provided with an extended groove; The contact sheet is 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 sheet is heated, it deforms and bends in reverse and bounces to the other side; one end of the contact sheet is fixed and assembled on the One contact terminal is provided with a first contact at the other end; One end of the linkage rod is movably clamped and connected to the contact piece, and the other end is movably embedded in the fastening hole of the button; Among them: the buckle hole of the button is provided with an extension groove, one end of the linkage rod is movably connected to the contact piece, and the other end of the linkage rod is movably embedded in the buckle hole of the button. When the button is in the position where the circuit is ON , the extended groove of the buckle hole corresponds to the linkage rod, providing a space for free displacement of one end of the linkage rod; when the current is overloaded, the contact piece is heated and deformed and bounces back, and the contact piece directly pushes the linkage rod to move. The other end of the interlocking rod embedded in the buckle hole of the button can freely displace in the extension groove without being hindered by the button, and the contact piece can jump off smoothly, forming a complete power-off OFF state of the circuit loop. 2. The circuit control protector according to claim 1, characterized in that at least two contact terminals provided in the box body are respectively the first and second contact terminals, and the bending part above the first contact terminal is fixedly assembled One end of the contact sheet is combined with a second contact above the second contact terminal. 3 . The circuit control protector according to claim 1 , wherein an extension piece is provided under the button, and the extension piece is provided with a buckle hole. 4 . 4. The circuit control protector according to claim 1, characterized in that the contact piece is a composite metal sheet. 5. The circuit control protector according to claim 1, characterized in that, one end of the linkage rod is provided with a clamping groove, and the other end is provided with a cross bar; The clamping groove of the linkage rod is movably clamped and connected to the free end of the contact piece, and the cross bar at the other end of the linkage rod is movably embedded in the fastening hole of the button.

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