CN1881511A - Circuit control protector - Google Patents

Abstract

The invention relates to a circuit control protector, wherein one knob is axially mounted at the opening of box, while one end of knob downwards extends to contact one end of contact plate, and another end of knob is axially connected to a linked element whose one end is arranged with extending rod; said linked element contacts another end of contact plate; the box has one cycle path; the extending rod is inserted into the cycle path to displace and position along the ring; via pressing the knob to rotate it, one end of knob pushes one end of contact plate, and the linked element at another end of knob pushes another end of contact plate, to make two ends of contact plate move up-and-down, to form the power-on or power-off states of circuit; when the knob is at the position that the circuit is power one, the pushing element do not contact and limit another end of contact plate, to make it freely jump; when the current is over, the contact plate is heated and deformed to jump reversed to cut off the circuit.

Description

Circuit control protector

Technical Field

The invention relates to a circuit-controlled protector, which is characterized in that a button is pressed to swing, the button pushes a contact piece, two ends of the contact piece jump up and down, and a power-ON (ON) state or a power-OFF (OFF) state of a circuit loop is formed; when the button is located at the position of circuit conduction (ON), the button does not abut against the limiting contact piece, and when the current is overloaded, the contact piece is heated and deformed to be bent and bounced reversely, so that the tripping and power-OFF (OFF) of the circuit loop are achieved.

Background

The operation of the power control switch mainly comprises two actuation processes 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 powering OFF when the current is overloaded and overheated, so as to avoid the danger that the fuse or the breaker of the current loop can not respond to the real-time power-OFF or tripping when the current is overloaded.

Various known power control switch patents are not enumerated in the prior applications, such as U.S. patent No. 5,262,748, other U.S. patent nos. 4,167,720, 4,937,548, 5,223,813, 5,451,729, 5,558,211, etc., which the applicant applied to, but all of these patents have common disadvantages, as follows:

(1) the linkage components are various, the linkage stroke is complex, the non-real-time actuation relation between the key and the terminal component is generated, and the manufacturing cost is also increased;

(2) the actuation relationship is unreliable, the failure chance is increased, and the safety consideration of the use and the electricity utilization of consumers is not facilitated;

(3) when the current overload circuit is overheated, the contact elastic sheet cannot trip or is not tripped completely in real time, so that the circuit is still in a current conduction state, and the circuit is continuously overheated to cause danger;

(4) when the current overload circuit is overheated, the contact elastic sheet is in a half-trip state, and when the contact elastic sheet is cooled, the contact elastic sheet is in a power-on state again, and the contact elastic sheet is continuously and repeatedly powered on and powered off to form sparks, so that danger is caused; and the electronic and electric equipment in the current loop is crashed or can not normally operate due to repeated power-on and power-off, thereby shortening the service life and even being damaged and being incapable of being used.

In order to effectively execute the linkage action relationship of the internal components of the power control switch, simplify the components of the power control switch to reduce the manufacturing cost, and ensure that the power control switch can respond in real time to trip and power off under the current overload state to enhance the power utilization safety, the continuous research and improvement of the structure of the power control switch is an important issue for manufacturers.

Disclosure of Invention

The technical problems to be solved are as follows:

the invention aims to solve the defects of complex components, high manufacturing cost, indirect linkage relation, slow linkage stroke response and more faults of the power control switch in operation of the well-known linkage structure of various power control switches, and particularly solves the problem that the well-known power control switch cannot trip OFF power (OFF) in real time to trip OFF power or trip incompletely when the current is overloaded and overheated, so that the circuit is in an overheating state of continuous circulation; and the problem of danger caused by the fact that the contact elastic sheet is in a half-trip state when overload and overheat occur, and then jumps back to the power-on state when the contact elastic sheet is cooled, and continuously and repeatedly powers on and off to form sparks is solved.

The technical scheme for solving the problems is as follows:

a circuit control protector, wherein, connect to the opening of the cartridge body with a button activity, one end of the button extends and butts one end of a contact piece downward, another end pin joint of the button links the link piece, one end of the link piece sets up the extension bar, the link piece butts another end of the aforesaid contact piece, the cartridge body sets up a circulating path, the extension bar of the link piece stretches into the circulating path and along the cyclic displacement, positioning; by pressing the button to swing, one end of the button extending pushes one end of the contact piece, and the linkage piece at the other end of the button pushes the other end of the contact piece, so that the two ends of the contact piece jump up and down to form an ON (ON) state or an OFF (OFF) state of a circuit loop; when the button is at the position of circuit conduction (ON), the end part of the linkage part pivoted with the button moves to the position of the contact piece which is not propped against the limiting contact piece, and when the current is overloaded, the contact piece is heated and deformed to bounce reversely, so that the power-OFF (OFF) of the circuit loop is formed.

The technical scheme of the utility model beneficial effect:

the invention is a circuit control protector, its main purpose and beneficial effect lie in that, one end of the button extends, another end pin joints the linkage, the box body sets up a circulating path, the circulating path guides the annular displacement of the linkage, positions; the button is pressed to swing, so that one end of the button extending pushes one end of the contact piece, the linkage piece pushes the other end of the contact piece, the two ends of the contact piece jump up and down, and a circuit loop is in an ON state or an OFF state; when the button is located at the position of circuit conduction (ON), the linkage piece of the button does not abut against the limiting contact piece, and when the current is overloaded, the contact piece is heated and deformed to be bent and bounced reversely, so that the power-OFF (OFF) state of a circuit loop is formed, and the purpose of electric safety is achieved.

The second purpose and the beneficial effect of the invention are that the linkage piece pivoted with one end and the other end of the button extension is abutted against the contact piece to directly control the bounce of the contact piece to form circuit conduction (ON) or circuit disconnection (OFF), thereby effectively simplifying the linkage component of the power control switch, leading the linkage of the switch to be more direct and rapid, reducing the delay problem of the linkage time course of the component and reducing the fault of the power control switch.

Another object and effect of the present invention is that when the button is located at the position of circuit conduction (ON), the end of the linkage of the button moves to the position of the contact piece, which is not pressed against the limiting contact piece, when the circuit is overheated, the contact spring piece is heated and deformed to be bent reversely, and rapidly trip, and is in the complete trip power-off state, so as to avoid the contact spring piece from jumping back to the power-ON state when being cooled, and the danger caused by the contact spark formed by continuous and repeated power-ON and power-off can be avoided.

The invention aims to simplify the components of the integral linkage of the power control switch, has easy assembly, can effectively reduce the manufacturing cost, prolongs the service life of the power control switch structure and reduces the expenditure of consumers.

Drawings

FIG. 1 is a combined cross-sectional view of an embodiment of the present invention, showing a power-OFF (OFF) state of the embodiment of the present invention;

FIG. 2 is a combined cross-sectional view of an embodiment of the present invention, showing the energized (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 when the current is overloaded in the case of power-ON (ON), the contact piece and the contact portion are bent and tripped reversely, and the linking member is pushed to move freely to be in a power-OFF (OFF) state;

FIG. 4 is an exploded perspective view of an embodiment of the present invention;

FIG. 5 is an enlarged partial perspective view of an embodiment of the present invention;

FIG. 6 is a sectional view of the second embodiment of the present invention, showing the power-OFF state of the second embodiment of the present invention;

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

fig. 8 is a combined cross-sectional view of the second embodiment of the present invention, which shows that when the current is overloaded in the power-ON (ON) condition, the contact plate and the contact portion are bent and tripped reversely, and the linking member is pushed to be freely displaced, so as to be in the power-OFF (OFF) state.

In the drawings

1 case 11 first contact terminal

12 second contact terminal 121 second contact

13 circulation path 131 center guide block

132 left guide block 133 right guide block

14 ring-shaped stairway 2 button

20 shaft 21 projection

22 linkage 220 axle hole

221 extension rod 23 extending groove

3 contact part of contact piece 31

311 first contact 312 tab

313 protruding piece 32 elastic piece

321 first fastening hole 322 and second fastening hole

Detailed Description

To further illustrate the objects, features and advantages of the present invention, the following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, is provided:

referring to fig. 1-3, which are combined cross-sectional views of the embodiments of the present invention, the combined cross-sectional views show the power-OFF (OFF), power-ON (ON), and the state of the contact piece reversely bent and jumping to power-OFF (OFF) state in case of current overload; the invention relates to a circuit control protector, which mainly comprises a box body 1, a button 2 and a contact piece 3; wherein,

the case 1 is hollow, and has an opening on the top, at least two contact terminals are assembled on the bottom of the case 1, in this embodiment, two contact terminals are respectively the first and second contact terminals 11, 12, the bent part above the first contact terminal 11 is fixedly assembled with one end of the contact piece 3, a second contact point 121 is combined above the second contact terminal 12, and a circulation path 13 is disposed inside the case 1, referring to fig. 4 and 5, in this embodiment, the circulation path 13 is composed of a plurality of guide blocks that are not connected to each other, for example: the plurality of guide blocks are three polygonal guide blocks, which are a central guide block 131, a left guide block 132, and a right guide block 133 of a triangle with upward vertices.

The button 2 is a cap-shaped body, the button 2 is movably pivoted to an opening above the box body 1, so that the button 2 can swing by taking the pivoting part as an axis; one end (left end) of the button 2 extends downwards to form a convex part 21, the other end (right end) of the button 2 is pivoted with a linkage part 22, the linkage part 22 can rotate and swing relative to the button 2 by a pivoting shaft, an extension rod 221 is arranged at the end part of the linkage part 22, the extension rod 221 extends into the circulating path 13 of the box body 1, and the circulating path 13 guides the extension rod 221 of the linkage part 22 to move annularly and be positioned.

The contact piece 3 is a metal sheet with elasticity, which is formed into an arc shape, and the contact piece 3 can jump to two sides; one end of the contact piece 3 is fixedly combined on the first contact terminal 11 of the box body 1, and the other end of the contact piece 3 is a free end; a contact part 31 is formed at the central part of the contact piece 3 sheet body by arranging an inverted-U-shaped groove on the contact piece 3 sheet body, one end of the contact part 31 is connected with one side close to the free end of the contact piece 3, the contact part 31 is combined with a first contact 311, the free end of the contact part 31 protrudes out of the plane of the contact piece 3 sheet body, referring to fig. 4, the free end of the contact part 31 is provided with a lug 312, the lug 312 is movably buckled in a first buckle hole 321 at the end part of an elastic piece 32, the elastic piece 32 is an arc-shaped sheet body, the other end of the elastic piece 32 is provided with a second buckle hole 322, and the second buckle hole 322 is movably buckled in a protruding piece 313 in the inverted-U-shaped groove of the contact piece; the free end of the contact portion 31 is pushed to bend and jump upwards or downwards by the elastic force generated by the compression of the two ends of the elastic piece 32, and when the free end of the contact piece 3 bends and jumps downwards, the free end of the contact portion 31 bends and jumps upwards in reverse direction, and when the free end of the contact piece 3 bends and jumps upwards, the free end of the contact portion 31 bends and jumps downwards in reverse direction, that is, the free end of the contact piece 3 and the free end of the contact portion 31 keep a state of reverse bending and jumping mutually, and furthermore, the contact portion 31 is bent and positioned on the reverse arc side surface of the contact piece 3 by the elastic force of the elastic piece 32 buckled with the free end of the contact portion 31.

In the assembly, the protrusion 21 at the extending end of the button 2 abuts against one end (free end) of a contact piece 3, and the end of the linking member 22 pivoted to the button 2 abuts against the arc-shaped outer side surface of the elastic member 32 buckled with the contact portion 31 at the other end of the contact piece 3.

The invention is implemented in general power-ON (ON) and power-OFF (OFF); referring to fig. 1, when the left end of the push button 2 is pressed downward, the downward extending protrusion 21 of the left end of the push button 2 presses downward against the free end of the contact piece 3 to bounce downward, so that the free end of the contact portion 31 of the contact piece 3 bounces upward and reversely, and the first contact 311 and the second contact 121 on the contact portion 31 are separated to be in an OFF (OFF) state; meanwhile, the right end of the button 2 is upward to drive the linkage member 22 upward, and the extension rod 221 at the end of the linkage member 22 is displaced from the lower right position of the circulation path 13 to the left upper position, i.e. from the lower right position of the central guide block 131, and is displaced upward and leftward along the path between the right inclined surface of the central guide block 131 and the right guide block 133, and returns to the upper position of the central guide block 131, i.e. from the power-ON (ON) state of fig. 2 to the power-OFF (OFF) state of fig. 1.

When the right end of the push button 2 is pressed downwards, the extension rod 221 at the end of the interlocking member 22 moves downwards and leftwards along the upper position of the circulation path 13, and then moves rightwards to the lower right position of the circulation path 13, that is, moves downwards and leftwards from the path between the left inclined surface of the central guide block 131 and the left guide block 132, and then moves rightwards to the lower right of the central guide block 131, so that the end of the interlocking member 22 pushes the elastic member 32 of the contact piece 3 downwards and leftwards, the free end of the contact part 31 of the left interlocking contact piece 3 of the elastic member 32 moves downwards and bounces, and the first contact 31 ON the contact part 31 contacts with the second contact 121, and is in an energized (ON) state, as shown in fig. 2; at this time, the free end of the contact piece 3 bounces upward in the opposite direction to the free end of the contact portion 31 bounces downward.

As described above, the left and right ends of the push button 2 are repeatedly pressed and swung, so that the protrusion 21 at the extended end of the push button 2 and the end of the pivotally connected interlocking member 22 are respectively abutted against and pushed against the elastic member 32 at the free end of the contact piece 3 and the right end of the contact piece 3, and the free end of the contact portion 31 of the contact piece 3 is upwardly and downwardly jumped, so that the first contact 31 of the contact portion 31 is separated from and brought into contact with the second contact 121 of the second contact terminal 12, thereby forming an OFF (OFF) state or an ON (ON) state of the circuit.

The invention is characterized in that: one end (left end) of the button 2 extends to form a convex part 21, the other end (right end) of the button 2 is pivoted with a linkage part 22, the end part of the linkage part 22 is provided with an extension rod 221, the extension rod 221 extends into a circulating path 13 arranged in the box body 1, and the extension rod 221 of the linkage part 22 is guided by the circulating path 13 to move annularly and be positioned; by pressing the button 2 to swing, the protrusion 21 extending from one end of the button 2 pushes the free end (left end) of the contact piece 3 downward, the free end of the contact portion 31 of the contact piece 3 bounces upward and reversely, so that the first contact 311 is separated from the second contact 121, thereby forming the power-OFF (OFF) of the circuit loop, or the end of the linking member 3 pushes the elastic member 32 at the other end of the contact piece 3 downward, thereby linking the free end of the contact portion 31 to bend and bounce downward, so that the first contact 311 is contacted with the second contact 121, thereby forming the power-ON (ON) of the circuit loop;

when the button 2 is located at the position of conducting (ON) the circuit, as shown in fig. 2, the end of the linking member 22 of the button 2 is located at the right side of the elastic member 32 of the contact 3, and there is a distance between the extension rod 221 of the linking member 22 and the right side of the circulating path 13, i.e. there is a distance between the extension rod 221 of the linking member 22 and the right side guide block 133, which provides a free displacement space for the extension rod 221, so that the end of the linking member 22 will not abut against the elastic member 32 for limiting the contact 3, and therefore, the end of the linking member 22 will not abut against the elastic member 32 for limiting the contact 3, when the current is overloaded, the contact 3 and the contact portion 31 are deformed by heat and reversely bent and bounced, the free end of the contact 3 bounces downward and the free end of the contact portion 31 upward, so that the first contact 311 ON the contact portion 31 and the second contact 121 of the second contact terminal 12 are separated, as shown in fig. 3;

meanwhile, because the free end of the contact part 31 bounces upwards, the free end (left end) of the elastic element 32 is pushed to move upwards, the elastic element 32 rotates clockwise by taking the right end as an axis, and pushes the end part of the linkage element 22 to move rightwards by the right cambered surface of the elastic element 32; after the user jumps OFF due to overload, the user presses the left end of the button 2 downwards, which drives the extension rod 221 of the linking member 22 to move to the upper position along the lower right position of the circulating path 13, i.e. to move from the path between the central guide block 131 and the right guide block 133, and then returns to the normal power-OFF (OFF) reuse state, as shown in fig. 1.

Referring to fig. 6-8, they are combined cross-sectional views of a second embodiment of the present invention, showing the power-OFF (OFF), ON (ON) and TRIP-FREE (TRIP-FREE) states thereof; the second embodiment mainly comprises a box body 1, a button 2 and a contact piece 3; wherein,

the structure of the box body 1 is the same as that of the box body 1 of the previous embodiment; the only difference is that: an annular ladder 14 is provided in the box 1 to replace the aforementioned circulating path 13, i.e. to replace the structure of the central guide block 131, the left guide block 132 and the right guide block 133 of the plurality of guide blocks.

The push button 2 is identical to the entire structure of the push button 2 of the previous embodiment.

The contact plate 3 is identical to the whole structure of the contact plate 3 of the previous embodiment.

When the combination is implemented, the extending rod 221 of the end of the linking member 22 pivoted to the button 2 is extended into the annular ladder 14 disposed in the box body 1, and the extending rod 221 of the linking member 22 is guided by the annular ladder 14 to move annularly and be positioned.

The operation, the linkage and the effect achieved by the second embodiment are completely the same as the above embodiments.

Referring to fig. 8, when the button 2 is located at the circuit conducting (ON) position, the end of the linking member 22 of the button 2 is located at the right side of the elastic member 32 of the contact, and there is a distance between the extension rod 221 of the linking member 22 and the right side of the annular ladder 14 of the case 1, the distance provides a free displacement space for the extension rod 221 of the linking member 22, so that the end of the linking member 22 does not abut against the elastic member 32 of the limiting contact 3, when the current is overloaded, the contact 3 and the contact portion 31 are deformed by heat and bent reversely to bounce, the free end of the contact 3 bounces downward and the free end of the contact portion 31 bounces upward, so that the first contact 311 of the contact portion 31 and the second contact 121 of the second contact 12 are separated, and the power-OFF (OFF) state of the circuit is formed.

The invention has simple and rapid actuating process; when the current is overloaded, it is not obstructed by the switch component, the contact piece 3 and the contact part 31 can be deformed by heat and reversely tripped, so that the circuit loop becomes a complete power-OFF (OFF) state, and the safety of power utilization can be achieved.

As mentioned above, the structure and operation relationship of the assembly of the present invention are practical, and have practicability and creativity, which are new designs, thus meeting the requirements of patent laws and application. Therefore, the examiner can take scrutiny and pray for patent approval and religion.

The present invention has been described in detail, but the above description is only a preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made according to the scope of the present invention should also be covered by the scope of the present invention.

Claims (12)

1. A circuit control protector mainly comprises a box body, a button, a contact piece and a linkage rod piece; it is characterized in that the preparation method is characterized in that,

the box body is hollow, an opening is arranged above the box body, at least two contact terminals are arranged on the bottom surface of the box body, and a circulating path is arranged in the box body;

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; one end of the button extends downwards, the other end of the button is pivoted with a linkage piece, the linkage piece rotates and swings relative to the button, the end part of the linkage piece is provided with an extension rod, the extension rod extends into the circulating path of the box body, and the extension rod of the linkage piece is guided to move annularly and be positioned through the circulating path;

the contact piece is an elastic metal piece body which is formed into an arc shape and can jump to two side surfaces of the contact piece body; one end of the contact piece is fixedly combined on a contact terminal of the box body, and the other end of the contact piece is a free end; forming a contact part on the contact sheet body, wherein one end of the contact part is connected with the contact sheet, the contact part is combined with a first contact point, the free end of the contact part protrudes out of the plane of the contact sheet body, the free end of the contact part is movably buckled at the end part of an elastic piece, and the other end of the elastic piece is movably buckled at the contact sheet body; the free end of the contact part is pushed by the elastic piece to bend upwards or downwards to jump, the free end of the contact piece and the free end of the contact part mutually keep a reverse bending and jumping state, and the contact piece and the contact part respectively deform and bend reversely and bounce to the other side surface when being heated;

when the button is combined, one end of the button extending is abutted against the free end of the contact piece, and the end part of the linkage piece pivoted with the button is abutted against the elastic piece buckled with the contact part at the other end of the contact piece;

when the button is located at the position of circuit conduction, the end part of the linkage part of the button is located at the right side of the elastic part of the contact piece, and a distance is still reserved between the extension rod of the linkage part and the right side edge of the circulation path of the box body to provide a space for free displacement of the extension rod, so that the end part of the linkage part cannot abut against the elastic part for limiting the contact piece, when current is overloaded, the contact piece and the contact part are heated and deformed to be bent and bounced reversely, the free end of the contact piece bounces downwards and the free end of the contact part bounces upwards, and the free end of the contact part jumps off to form.

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 for fixedly assembling one end of the contact piece, and the second contact terminal has a second contact point coupled thereto.

3. The circuit control protector according to claim 1, wherein the circulating path is formed by a plurality of conductive blocks which are not connected to each other.

4. A circuit control protector according to claim 3 wherein the plurality of guides are three guides of a polygon, respectively a central guide, a left guide, and a right guide of a triangle with the apex pointing upwards.

5. The circuit control protector of claim 1, wherein the contact pad is a composite metal foil.

6. The circuit control protector according to claim 1, wherein the free end of the contact portion has a protruding tab movably fastened in a first fastening hole at an end of the elastic member, and the other end of the elastic member has a second fastening hole movably fastened in a protruding tab in the n-shaped slot of the contact sheet body.

7. The circuit control protector according to claim 1, wherein the resilient member is an arcuate sheet.

8. A circuit control protector mainly comprises a box body, a button, a contact piece and a linkage rod piece; it is characterized in that the preparation method is characterized in that,

the box body is hollow, an opening is arranged above the box body, at least two contact terminals are arranged on the bottom surface of the box body, and an annular ladder way is arranged in the box body;

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; one end of the button extends downwards, the other end of the button is pivoted with a linkage piece, the linkage piece rotates and swings relative to the button, the end part of the linkage piece is provided with an extension rod, the extension rod extends into the annular ladder way of the box body, and the extension rod of the linkage piece is guided to move annularly and be positioned through the annular ladder way;

the contact sheet is an elastic metal sheet body which is formed into an arc shape and can jump to two sides of the contact sheet body; one end of the contact piece is fixedly combined on a contact terminal of the box body, and the other end of the contact piece is a free end; forming a contact part on the contact sheet body, wherein one end of the contact part is connected with the contact sheet, the contact part is combined with a first contact point, the free end of the contact part protrudes out of the plane of the contact sheet body, the free end of the contact part is movably buckled at the end part of an elastic piece, and the other end of the elastic piece is movably buckled at the contact sheet body; the free end of the contact part is pushed by the elastic piece to bend upwards or downwards to jump, the free end of the contact piece and the free end of the contact part mutually keep a reverse bending and jumping state, and the contact piece and the contact part respectively deform and bend reversely and bounce to the other side surface when being heated;

when the button is combined, one end of the button extending is abutted against the free end of the contact piece, and the end part of the linkage piece pivoted with the button is abutted against the arc-shaped outer side surface of the elastic piece of the contact piece;

when the button is located at the position where the circuit is conducted, the end part of the linkage part of the button is located on the right side face of the elastic part of the contact piece, a distance is reserved between the extension rod of the linkage part and the side edge of the annular ladder way of the box body, a section of free displacement space of the extension rod of the linkage part is provided, the end part of the linkage part cannot abut against the elastic part of the contact piece to limit the contact piece, and when the current is overloaded, the contact piece and the contact part are heated to deform and reversely bend and bounce, so that the free end of the contact part jumps off, and the power-off.

9. The circuit control protector according to claim 8, 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 for fixedly assembling one end of the contact piece, and the second contact terminal has a second contact point coupled thereto.

10. The circuit control protector of claim 8, wherein the contact pad is a composite metal sheet.

11. The circuit control protector according to claim 8, wherein the free end of the contact portion has a tab movably fastened in a first fastening hole at an end of the elastic member, and the other end of the elastic member has a second fastening hole movably fastened in a protruding piece in the n-shaped slot of the contact piece body.

12. The circuit control protector according to claim 8, wherein the resilient member is an arcuate sheet.

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