CN110676117B - Overheating damage assembly of switch, socket and assembling method thereof - Google Patents

Abstract

The invention provides an overheating damage component of a switch, the switch, a socket and an assembling method thereof, wherein the overheating damage switch comprises: a base, a first conductive piece, a second conductive piece, a movable conductive piece, an overheating destruction piece, an operation component and a second elastic piece. The movable conductive member is connected with the first conductive member and the second conductive member. The operating assembly comprises an operating piece and a first elastic piece, wherein the first elastic piece is limited between a contact piece and the overheating destruction piece and has a first elastic force. The second elastic force of the second elastic member acts on the operating member. The overheat breaking element is broken at the breaking temperature to reduce or lose the first elastic force, and the second elastic force forces the operating element to move so that the movable conductive element is separated from the second conductive element to form a power failure.

Description

Overheating damage assembly of switch, socket and assembling method thereof

Technical Field

The present invention relates to an overheat damage switch, an overheat damage module, a method for assembling the overheat damage module, and a socket having the switch, and more particularly, to a power-off structure different from a fuse and a bimetal.

Background

A conventional rocker switch controls a switch to pivot in a reciprocating manner within a certain angle range to control the on/off of the switch, for example, taiwan patent No. 560690, "spark shielding structure of a switch", wherein the switch is positioned at a first position or a second position by using a positioning feature to form the on/off when pivoting.

The conventional push switch, which can repeatedly control the on/off of the switch by each push operation, uses a reciprocating button structure similar to the conventional automatic ballpoint pen, so that the button of the switch is positioned at a lower position or an upper position by each push, as disclosed in chinese patent No. CN 103441019.

Taiwan patent No. 321352, "improvement of on-line switch structure", discloses a switch structure with a fuse, but the fuse is located in the path of the power line, and needs to rely on the passing of current for protection, especially the over-current can melt the fuse, since the fuse needs to pass the current during operation, but must be melted when the current is too large, so the low melting point lead-tin alloy and zinc are often used as the fuse, and the conductivity is much lower than that of copper. Taking an extension cord socket as an example, the extension cord socket mainly uses copper as a conductor, and if the extension cord socket is combined with the switch of taiwan patent No. 321352 to control the power supply, the conductivity of the fuse is poor, and the problem of energy consumption is easily caused.

Taiwan patent No. M382568 discloses a bi-metal type overload protection switch, but the bi-metal must be located in the current path, and it is necessary to deform the bi-metal depending on the current passing through the bi-metal, especially, the overload current is needed to deform the bi-metal to interrupt the circuit.

Taiwan patent No. M250403 "overload protection switch structure for group socket" discloses that an overload protection switch is applied to an extension socket, and the overload protection switch of the prior art of the patent is provided with a bimetallic strip, and when the total power of the entire extension socket exceeds, the bimetallic strip automatically trips due to thermal deformation, so as to achieve the function of power-off protection. However, the bimetal must rely on the passage of current to have overload protection, and the conductivity of the bimetal is far lower than that of copper, so that the bimetal is easy to have energy consumption problem.

However, in addition to overheating caused by current overload, in the case of extension cord sockets, the following conditions may cause overheating of any socket, including:

1. the metal pins of the plug are heavily oxidized and coated with oxide, so that when the plug is inserted into the socket, the oxide with poor conductivity causes the resistance to become large, and the socket is overheated.

2. When the metal pins of the plug are inserted into the socket, the insertion is incomplete, so that only partial contact is caused, and the socket is overheated due to an excessively small contact area.

3. The metal pins of the plug deform or wear causing incomplete contact when inserted into the socket and too small a contact area causing overheating of the socket.

4. The metal pins of the plug or the metal pieces of the socket are contaminated with foreign substances such as dust or dirt, so that the electrical conductivity is not good, and thus the resistance becomes large and overheated.

Under the above conditions, the working temperature of the socket and the working temperature of the overload protection switch are seriously different.

The inventor of the invention disclosed in U.S. patent application No. US9698542, "Assembly and method of complex connected slots sharing an overheating and stabilizing heating element", and found from the test of US9698542 patent TABLE2 that if the overheated socket is located at position 10 of TABLE2, the overload protection switch is located at position 1 of TABLE2, which is 9 cm apart, then when the socket operating temperature reaches 202.9 ℃, the overload protection switch also has an operating temperature of only 110.7 ℃ after 25 minutes. That is, when the distance between the socket and the overload protection switch is 9 cm, and when the working temperature of the socket is over-heated to 202.9 ℃ and accidental combustion is possible, the bimetallic strip of the overload protection switch is only 110.7 ℃ and does not reach the deformed temperature, the overload protection switch cannot automatically trip and power off.

Because the overheated situation of production socket has many kinds, and the distance of socket and overload protection switch's bimetallic strip can lead to very big difference in temperature, consequently for effectual overheat protection that reaches, all should set up overload protection switch's bimetallic strip on each socket of extension line socket, but the overload protection switch price of bimetallic strip configuration is higher, if all set up on each socket of extension line socket, can lead to the price to rise by a wide margin, is unfavorable for using widely on the contrary.

Disclosure of Invention

The invention aims to: the utility model provides an overheated destruction subassembly of switch and switch, socket and the assembly method thereof, solves the above-mentioned technical problem that exists in the prior art.

In view of the disadvantages of the conventional fuse and bimetal, the present invention provides an overheat breaking assembly for a switch, comprising: an overheating destructive member and a first elastic member. The overheating damage part comprises a part to be damaged and a supporting part, the part to be damaged can be damaged at a damage temperature, the supporting part is connected with the part to be damaged, a displacement space is defined by an axial peripheral space of the supporting part, the part to be damaged is positioned at an outer edge of the supporting part, and the part to be damaged is positioned outside the displacement space. The first elastic member is abutted against the portion to be destroyed, so that the portion to be destroyed is pushed by the first elastic member to displace towards the displacement space at the destruction temperature.

Furthermore, the part to be destroyed and the supporting part are integrally formed by the same material.

Furthermore, the material of the portion to be destroyed is different from that of the support portion, and the temperature at which the support portion is destroyed due to overheating is defined as a support portion destruction temperature, which is relatively higher than the destruction temperature.

Furthermore, the portion to be destroyed is convexly provided with a sleeve portion towards the first elastic member for the first elastic member to sleeve.

The invention also provides an overheat damage switch, which adopts the overheat damage component of the switch, and comprises: a base, a first conductive member, a second conductive member, a movable conductive member, the overheating damage member, an operation assembly and a second elastic member. The base has a receiving space. The first conductive member penetrates through the base. The second conductive member penetrates through the base. The movable conductive piece is arranged in the accommodating space, is electrically connected with the first conductive piece and is selectively connected with the second conductive piece. The overheating destructive element can be destroyed at a destruction temperature. The operating assembly is assembled on the seat body and comprises an operating piece and the first elastic piece, the operating piece comprises an accommodating pipe part and a contact piece, the accommodating pipe part is provided with an opening, the overheating damage piece is fixedly arranged at an assembling position far away from the opening, the first elastic piece is positioned in the accommodating pipe part, a first end of the first elastic piece contacts a part to be damaged of the overheating damage piece, the contact piece contacts the movable conductive piece, and the first elastic piece is compressively limited between the contact piece and the overheating damage piece to have a first elastic force. The second elastic element has a second elastic force, and the second elastic force acts on the operation element. When the operating element is at a first position, the first elastic force forces the contact element to press against the movable conductive element, so that the movable conductive element is in contact with the second conductive element to form a power-on state, in the power-on state, current passes through the first conductive element, the movable conductive element and the second conductive element to generate heat energy, the heat energy is transmitted to the overheating destruction element through the contact element and the first elastic element, the part to be destroyed absorbs the heat energy and is destroyed at the destruction temperature, so that the part to be destroyed is pushed by the first elastic element to move towards the displacement space, so that the first elastic force is reduced or lost, at the moment, the second elastic force is greater than the first elastic force, the operating element is forced to move to a second position by the second elastic force, and the movable conductive element is separated from the second conductive element, so that a power-off state is formed.

Furthermore, the operating element further comprises a limiting piece, the limiting piece is a cylinder body and defines a space, and the limiting piece is abutted against the overheating damage piece so that the overheating damage piece is fixedly arranged at the assembling position; the first elastic member is fitted into the space.

Furthermore, the first elastic member is a spring, and the first end of the first elastic member is sleeved on a sleeving part of the overheating damage member.

Furthermore, the contact member is a hollow heat-conducting shell, the contact end contacts the movable conductive member, and the second end of the first elastic member extends into the contact member.

The invention also provides a socket with a switch, comprising the overheating damage switch, a live wire inserting piece, a live wire conductive piece, a zero wire conductive piece and a shell piece, wherein: the casing comprises a live wire jack and a zero wire jack; the live wire inserting piece is electrically connected with the first conductive piece and comprises a live wire inserting slot, and the live wire inserting slot corresponds to the live wire jack; the live wire conductive piece comprises a live wire connecting end which is electrically connected with the second conductive piece; the zero line conductive piece comprises a zero line slot, and the zero line slot corresponds to the zero line jack.

The invention also provides a method for assembling the overheating damage part of the switch, which comprises the following steps: arranging an overheating damage piece into a shape capable of being placed into an accommodating pipe part of an operating piece; the overheating damage piece is installed from an opening of the containing pipe part, so that the overheating damage piece is located at an assembling position far away from the opening; fixing the overheating damage piece at the assembling position, wherein the overheating damage piece can resist gravity and can not be separated from the assembling position; a first elastic piece is arranged in the accommodating pipe part from the opening, so that a first end of the first elastic piece is contacted with a part to be damaged of the overheating damage piece.

Furthermore, the first elastic member is a spring, and the first end of the first elastic member is sleeved on a sleeving part of the overheating damage member.

Furthermore, the overheating damage piece is fixed on the accommodating pipe part by means of an embedding part, an adhesive or a limiting part, so that the overheating damage piece is fixed at the assembling position.

According to the technical characteristics, the following effects can be achieved:

1. the overheating damage component is different from a bimetal and a common fuse in type, and has simple structure and easy preparation and assembly.

2. The overheating damage piece is not positioned on the current transmission path and is not responsible for transmitting current, so when the invention is used for electric products or extension cord sockets, the electrical performance of the electric appliances or the extension cord sockets cannot be directly influenced even if the electrical conductivity of the overheating damage piece is not copper.

3. The switch has the advantages of simple integral structure, easy manufacture, no obvious increase of the volume of the switch, lower manufacturing cost and easy implementation in the known rocker switch, press switch or other switches.

4. The overheating damage piece can be fixed at the assembly position through the embedding part, the adhesive or the limiting piece, so that the overheating damage piece is prevented from falling off when the operating piece is inverted, and the subsequent assembly procedure is easy to carry out.

5. The part to be destroyed of the overheating destruction piece and the supporting part can be made of the same material and are easy to mold, but can also be made of different materials, and the temperature of the supporting part destroyed by overheating is higher than the destruction temperature of the part to be destroyed, so that the part to be destroyed can be displaced relative to the supporting part when being destroyed.

Drawings

Fig. 1 is a schematic diagram of a first embodiment of the present invention, illustrating a rocker switch configuration and the rocker switch in the off position.

Fig. 2 is a perspective view of the first embodiment of the present invention showing the overheating damage.

Fig. 2A is a schematic cross-sectional view of a first embodiment of the overheating destructive element according to the present invention.

Fig. 2B is a schematic cross-sectional view of the first embodiment of the overheating destructive element according to the present invention.

FIG. 3 is a schematic plan view of the overheating destructive element, the operation element, and the first elastic element according to the first embodiment of the present invention.

Fig. 4 is a schematic view of a first embodiment of the present invention, illustrating the rocker switch in an on position.

Fig. 5 is a schematic view of the first embodiment of the present invention, which illustrates that when the overheating destructive element is damaged by overheating, the movable conductive element is separated from the second conductive element, so that the rocker switch returns from the on position to the off position to form an open circuit.

Fig. 6 is a schematic diagram of a second embodiment of the present invention, illustrating a rocker switch configuration and the rocker switch in the off position.

Fig. 7 is a schematic diagram of a second embodiment of the present invention, illustrating the rocker switch in an on position.

Fig. 8 is a schematic diagram of a second embodiment of the present invention, illustrating that when the overheating destructive element is destroyed by overheating, the movable conductive element is separated from the second conductive element, so that the rocker switch returns from the on position to the off position to form an open circuit.

FIG. 9 is a schematic view of a third embodiment of the present invention showing a push switch configuration and the push switch in the off position.

Fig. 10 is a schematic view of a third embodiment of the present invention, showing the push switch in the on position.

Fig. 11 is a schematic view of a third embodiment of the present invention, illustrating that when the overheating breaking element is damaged by overheating, the movable conductive element breaks away from the second conductive element to form an open circuit.

FIG. 12 is a schematic view of a fourth embodiment of the present invention showing a push switch configuration and the push switch in the off position.

Fig. 13 is a schematic view of a fourth embodiment of the present invention, showing the push switch in the on position.

Fig. 14 is a schematic view of a fourth embodiment of the present invention, illustrating that when the overheating destructive element is destroyed by overheating, the movable conductive element is separated from the second conductive element to form an open circuit.

Fig. 15 is an exploded view of a fifth embodiment of the thermal destruction power cutoff switch of the present invention for use in a extension cord socket.

Fig. 16 is a structural view of a thermal destruction power cutoff switch for an extension cord socket according to a fifth embodiment of the present invention.

Description of reference numerals: 1A, 1B, 1C-base; 11A, 11C-accommodation spaces; 12C — a projection; 2A, 2B, 2C-a first conductive member; 3A, 3B, 3C-a second conductive member; 4A, 4B-rocker conductive members; 4C-cantilever conductive member; 41A, 41B, 41C-silver contacts; 5A, 5B, 5C, 5D-overheating destructive elements; 51A, 51A' -linking portion; 511A-fitting part; 512A-adhesive; 52A-the portion to be destroyed; 53A, 53A' -support; 530A-530A' -outer edge; 531A-displacement space; 54A, 54A' -nesting portion; 6A, 6B, 6C-operating components; 610A, 610B-pivot points; 61A, 61B, 61C-operators; 611A, 611B, 611C-a housing tube; 6111A, 6111B, 6111C-assembly position; 6112A, 6112B, 6112C-openings; 6113B, 6113C-through hole; 612A, 612B, 612C-contact; 6121C-spacing post; 6122C-supporting seat; 613B, 613C-restriction member; 6131B, 6131C-space; 62A, 62B, 62C-a first resilient member; 621A-first end; 622A, 622C-second end; 63A-a first protrusion; 7A, 7B-a second resilient member; 7C-reed; 8-a shell member; 8A-upper housing part; 8B-lower housing member; 81-socket hole; 811-live wire jack; 812-neutral jack; 9-a live wire conductive member; 91-live wire insertion piece; 911-fire wire slot; 92-live wire connection end; 10-a neutral conductor; 101-zero line slot; 10A-a second protrusion; 20-overheat damage switch; 201-a first electrically conductive member; 202-a second electrically conductive member.

Detailed Description

In view of the above technical features, the main functions of the overheating damage switch, the overheating damage component, the assembling method of the overheating damage component, and the socket with the switch of the present invention will be clearly shown in the following embodiments.

Referring to fig. 1 and 2, a first embodiment of the present invention is an overheat damage switch, which is a rocker switch in the present embodiment, and fig. 1 shows the rocker switch in an off state. This rocker switch includes:

a base body 1A having a receiving space 11A.

A first conductive member 2A and a second conductive member 3A are disposed through the base 1A.

A movable conductive member disposed in the accommodating space 11A, the movable conductive member being a rocker conductive member 4A, the rocker conductive member 4A straddling the first conductive member 2A and electrically connecting the first conductive member 2A.

When the working temperature is abnormally increased, it is preferable that an open circuit is generated in the live wire, so that the first conductive member 2A is used as a first end of the live wire, the second conductive member 3A is used as a second end of the live wire, and the first conductive member 2A and the second conductive member 3A are conducted by the seesaw conductive member 4A to form a live wire path.

An overheating destructive element 5A, which can be destroyed at a destruction temperature of 100 ℃ to 250 ℃, is not used to maintain the continuous supply of electric current, and therefore, an insulating material such as plastic or a low melting point alloy of non-insulating material is selected, the low melting point alloy may be an alloy of bismuth and any one or more of cadmium, indium, silver, tin, lead, antimony and copper, or other low melting point metals or alloys with a melting point of 100 ℃ to 250 ℃, such as a tin-bismuth alloy with a melting point of about 138 ℃. In detail, the overheating destructive element 5A includes a connecting portion 51A, a portion to be destroyed 52A and a supporting portion 53A, and may further include an engaging portion 54A protruding in the axial direction. The supporting portion 53A connects the connecting portion 51A and the portion to be destroyed 52A, an axially outer space of the supporting portion 53A defines a displacement space 531A, for example, the diameter and width of the supporting portion 53A are relatively smaller than those of the connecting portion 51A to form the displacement space 531A, and the engaging portion 54A connects the portion to be destroyed 52A or the supporting portion 53A. Referring to fig. 2A, the portion to be destroyed 52A is located at an outer edge 530A of the supporting portion 53A (for example, the portion to be destroyed 52A protrudes radially from the supporting portion 53A), the portion to be destroyed 52A is located outside the displacement space 531A, and the connecting portion 51A, the portion to be destroyed 52A, the supporting portion 53A and the engaging portion 54A may be integrally formed of the same material, but not limited thereto. As shown in fig. 2B, the portion to be destroyed 52A and the supporting portion 53A 'may be made of different materials, for example, the connecting portion 51A', the supporting portion 53A 'and the engaging portion 54A' are made of the same material, and only the portion to be destroyed 52A is made of different materials. In detail, the temperature at which the supporting portion 53A 'is damaged due to overheating is defined as a supporting portion damage temperature which is relatively higher than the damage temperature of the portion to be damaged 52A, so that the portion to be damaged 52A can be displaced relative to the supporting portion 53A' when damaged.

Referring to fig. 1, the rocker switch of the present embodiment further includes an operating component 6A for operating the rocker conductive member 4A to connect the first conductive member 2A and the second conductive member 3A to form a live line path, or to disconnect the first conductive member 2A and the second conductive member 3A to break the live line. The operating component 6A is assembled on the seat body 1A, and includes an operating element 61A and a first elastic element 62A, the operating element 61A is provided with a pivot point 610A, the pivot point 610A is pivoted to the seat body 1A, so that the operating element 61A can rotate back and forth with the pivot point 610A as an axis for a limited amount, the operating element 61A further includes an accommodating tube portion 611A and a contact element 612A, an assembling position 6111A is provided at an end of the accommodating tube portion 611A far from the rocker conductive element 4A, the assembling position 6111A is, for example, a groove surface, an opening 6112A is provided at an end of the accommodating tube portion 611A near the rocker conductive element 4A, the overheating destructive element 5A is assembled through the opening 6112A, so that the overheating destructive element 5A is located at the assembling position 6111A, and the connecting portion 51A of the overheating destructive element 5A is fixed at the assembling position 6111A. The first elastic element 62A is installed in the accommodating tube portion 611A through the opening 6112A, such that a first end 621A of the first elastic element 62A contacts the portion to be damaged 52A, the contact element 612A is installed in the accommodating tube portion 611A through the opening 6112A, the contact element 612A contacts the rocker conductive element 4A, and the contact element 612A contacts a second end 622A of the first elastic element 62A, for example, the contact element 612A is a heat conductive housing and is sleeved on the second end 622A, the first elastic element 62A is compressively confined between the contact element 612A and the overheating damage element 5A, and has a first elastic force.

The rocker switch of this embodiment further has a second elastic member 7A, the second elastic member 7A is a spring in this embodiment, and the second elastic member 7A has a second elastic force acting on the operating member 61A. For example, a first protrusion 63A is disposed on the operating element 61A deviating from the pivot point 610A, a second protrusion 10A is disposed on the seat body 1A corresponding to the first protrusion 63A, and two ends of the second elastic element 7A are respectively sleeved on the first protrusion 63A and the second protrusion 10A.

Referring to fig. 3 in conjunction with fig. 1, the method of assembling the overheating breaker 5A is described in further detail below:

the overheating damage piece 5A is set to be able to be placed in the housing tube 611A of the operation piece 61A;

the overheating breaking piece 5A is installed from the opening 6112A of the accommodating pipe portion 611A, so that the overheating breaking piece 5A is located at an assembling position 6111A far away from the opening 6112A; the overheating breaking piece 5A is fixed to the assembling position 6111A sufficiently against the gravity without departing from the assembling position 6111A. For example, the connecting portion 51A is fixed to the accommodating tube portion 611A by a fitting portion 511A (e.g., a portion of the connecting portion 51A that is tightly fitted to the accommodating tube portion 611A or a fitting portion that is engaged with the accommodating tube portion 611A in a concave-convex manner) or/and an adhesive 512A such as an adhesive or grease with viscosity, so that the overheating damage component 5A is located at the assembling position 6111A;

the first elastic member 62A is installed in the accommodating tube portion 611A through the opening 6112A, such that the first end 621A of the first elastic member 62A contacts the portion 52A to be damaged of the overheating damage component 5A, and thus, the overheating damage component 5A can be initially assembled, and after the operating member 61A is tilted, the overheating damage component 5A is not dropped, and the subsequent assembly procedure of the complete switch is easily performed. In this embodiment, the first elastic element 62A is a spring, and the first end 621A of the first elastic element 62A is sleeved on the sleeved portion 54A of the overheating destructive element 5A;

the contact element 612A is mounted on the receiving tube portion 611A through the opening 6112A, and the contact element 612A contacts a second end 622A of the first elastic element 62A. It should be noted that the assembly sequence of the assembly method is not limited to the described sequence, for example, the overheating breaking element 5A and the first elastic element 62A may be assembled first, or the first elastic element 62A and the contact element 612A may be assembled first, and the main purpose is to prevent the overheating breaking element 5A from falling off when the operating element 61A is turned upside down by fixing the overheating breaking element 5A at the assembly position 6111A.

Referring to fig. 4, the user operates the operating element 61A to rotate around the pivot point 610A, so that the contact element 612A slides on the rocker conductive member 4A, and drives the rocker conductive member 4A to selectively contact or separate from the second conductive member 3A in a rocker motion manner. When the contact 612A slides on the rocker conductor 4A in a direction toward a silver contact 41A on the rocker conductor 4A, the first elastic force forces the silver contact 41A to contact the second conductor 3A to form a current-carrying state.

Referring to fig. 5, when the external conductive device connected to the first conductive member 2A or the second conductive member 3A is in an abnormal state, for example, the external conductive device is a socket, when there exists oxide, dust, incomplete insertion of the metal pin, deformation of the metal pin, etc. between the metal pin of the plug and the socket, the conductive portion of the socket generates a large amount of heat energy, the heat energy is transferred to the rocker conductive member 4A through the first conductive member 2A or the second conductive member 3A, and then transferred to the overheating destructive member 5A through the contact member 612A and the first elastic member 62A, the portion to be destroyed 52A of the overheating destructive member 5A absorbs the heat energy and gradually reaches its melting point, at this time, the portion to be destroyed 52A of the overheating destructive member 5A gradually loses rigidity, so that the rigidity of the portion to be destroyed 52A is relatively smaller than that of the supporting portion 53A, for example, the material of the overheating destructive member 5A is a tin-bismuth alloy, although the melting point is 138 ℃, the rigidity of the portion to be destroyed of the overheating destruction element 5A begins to be lost when the melting point is close to the melting point, and the portion to be destroyed 52A of the overheating destruction element 5A is gradually displaced toward the displacement space 531A by the first elastic force, so that the first elastic force is reduced or lost, and the second elastic force is greater than the first elastic force. In this embodiment, the arrangement direction of the first conductive member 2A and the second conductive member 3A defines a longitudinal direction, the operating member 61A has a length in the longitudinal direction, the first elastic member 62A is disposed at a central position of the length, and the second elastic member 7A is spaced from the central position of the length. Therefore, when the second elastic force is greater than the first elastic force, the operating element 61A can rotate around the pivot point 610A due to the action of the moment and drive the contact element 612A to slide on the rocker conductive element 4A, so that the operating element 61A is forced to move to the closed position, and the silver contact 41A of the rocker conductive element 4A is separated from the second conductive element 3A, thereby forming a power-off state, and thus achieving the overheat protection effect.

Referring to fig. 6 and 7, a second embodiment of the present invention is an overheat damage switch, which is a rocker switch in the present embodiment, and fig. 6 shows the rocker switch in an off state. The rocker switch is substantially the same as the first embodiment, and the overheat destruction switch also includes: a base body 1B, a first conductive piece 2B, a second conductive piece 3B, a movable conductive piece, an overheating destruction piece 5B, an operation component 6B and a second elastic piece 7B. The movable conductive member is also a rocker conductive member 4B, the rocker conductive member 4B straddles the first conductive member 2B and is electrically connected to the first conductive member 2B, and the operating member 61B also rotates in a limited reciprocating manner with the pivot point 610B as an axis, so that the contact member 612B slides on the rocker conductive member 4B, and the rocker conductive member 4B is driven to selectively contact or separate from the second conductive member 3B in a rocker motion manner. When the contact 612B slides on the rocker conductor 4B in a direction toward a silver contact 41B on the rocker conductor 4B, the first elastic force forces the silver contact 41B to contact the second conductor 3B to form a current-carrying state.

The main difference is that the operation element 61B further includes a limiting piece 613B, the limiting piece 613B is, for example, a cylinder to define a space 6131B, and by the limiting piece 613B abutting against the thermal damage element 5B, the thermal damage element 5B can be located at the assembling position 6111B of the receiving tube 611B, and is not limited to the adhesive or the fitting portion described in the first embodiment; the first elastic member 62B is installed in the space 6131B. In addition, the receiving tube 611B may further include a through hole 6113B, the through hole 6113B is opposite to the opening 6112B of the receiving tube 611B, and the diameter width of the through hole 6113B is greater than the diameter width of the first elastic element 62B.

Referring to fig. 8, when the external conductive device connected to the first conductive member 2B or the second conductive member 3B is in an abnormal state, for example, the external conductive device is a socket, when there are oxides, dust, incomplete insertion of the metal pin, deformation of the metal pin, etc. between the metal pin of the plug and the socket, the conductive portion of the socket generates large heat energy, the heat energy is transmitted to the rocker conductive member 4B through the first conductive member 2B or the second conductive member 3B, and then transmitted to the overheating destructive member 5B through the contact member 612B and the first elastic member 62B, the overheating destructive member 5B absorbs the heat energy and gradually reaches its melting point, and at this time, the overheating destructive member 5B gradually loses rigidity, for example, the overheating destructive member 5B is made of a tin-bismuth alloy, but starts to lose rigidity when the melting point is close to the melting point, meanwhile, under the action of the first elastic force, the overheating breaking element 5B is pressed and deformed or even broken by the first elastic element 62B, so that the first elastic element 62B passes through the overheating breaking element 5B and extends out of the through hole 6113B, the first elastic force is reduced or lost, the second elastic force is larger than the first elastic force at this time, then the operating element 61B rotates around the pivot point 610B as an axis under the action of torque, and drives the contact element 612B to slide on the rocker conductive element 4B, so that the operating element 61B is forced to move to a closed position, and the silver contact 41B of the rocker conductive element 4B is separated from the second conductive element 3B, so as to form a power-off state, thereby achieving the overheating protection effect.

Referring to fig. 9 and 10, a third embodiment of the present invention is an overheat damage switch, and in this embodiment, a press switch, and fig. 9 shows a state where the press switch is turned off. The push switch comprises:

a base body 1C having a receiving space 11C and a protrusion 12C.

A first conductive member 2C and a second conductive member 3C are disposed through the base 1C.

A movable conductive member disposed in the accommodating space 11C, the movable conductive member being a cantilever conductive member 4C.

An overheating destructive element 5C, which can be destroyed at a destruction temperature of 100 ℃ to 250 ℃, is not used to maintain the continuous supply of electric current, and therefore, an insulating material such as plastic or a low melting point alloy of non-insulating material is selected, the low melting point alloy may be an alloy of bismuth and any one or more of cadmium, indium, silver, tin, lead, antimony and copper, or other low melting point metals or alloys with a melting point of 100 ℃ to 250 ℃, such as a tin-bismuth alloy with a melting point of about 138 ℃. In this embodiment, the overheating damage component 5C is configured as a circular sheet, but other embodiments such as a rod, a cap, a radial sheet, a block, a sphere, or an irregular body are also feasible.

When the working temperature is abnormally increased, it is preferable that the open circuit is generated in the live wire, so that the first conductive member 2C is used as the first end of the live wire, the second conductive member 3C is used as the second end of the live wire, and the first conductive member 2C and the second conductive member 3C are conducted by the cantilever conductive member 4C to form a live wire path.

The push switch of this embodiment further has an operating component 6C for operating the cantilever conductive member 4C to connect the first conductive member 2C and the second conductive member 3C to form a live line path, or to disconnect the first conductive member 2C and the second conductive member 3C to break the live line. The operating component 6C is assembled to the seat body 1C, the operating component 6C includes an operating element 61C and a first elastic element 62C, the operating element 61C is sleeved on the protruding portion 12C, and the operating element 61C can move back and forth in the protruding portion 12C in a limited manner. The reciprocating and positioning structure of the whole operating unit 6C is similar to the structure of the conventional automatic ball pen button or the structure of the "button switch" in chinese patent No. CN103441019 in the background art, so that some conventional positioning structures are omitted from the drawings of this embodiment. The operating member 61C further includes a receiving tube portion 611C, a contact member 612C, and a limiting member 613C. An assembly position 6111C is disposed at an end of the accommodating tube portion 611C away from the cantilever conductive member 4C, the assembly position 6111C is, for example, a groove surface, an opening 6112C is disposed at an end of the accommodating tube portion 611C adjacent to the cantilever conductive member 4C, a through hole 6113C is disposed at an end of the accommodating tube portion 611C away from the cantilever conductive member 4C, and the overheating damage component 5A is installed in the accommodating tube portion 611C through the opening 6112C, so that the overheating damage component 5C is located at the assembly position 6111C. The limiting piece 613C is, for example, a cylinder to define a space 6131C, and the limiting piece 613C abuts against the overheating breaking piece 5C, so that the overheating breaking piece 5C is located at the assembling position 6111C of the accommodating pipe portion 611C and can resist gravity sufficiently without departing from the assembling position 6111C. The contact element 612C includes a position-limiting post 6121C and a supporting base 6122C, the position-limiting post 6121C extends into the second end 622C of the first elastic element 62C, so that the first elastic element 62B abuts against the supporting base 6122C, and the supporting base 6122C contacts the cantilever conductive element 4C. The overheating breaking element 5C abuts against the limiting element 613C, and the first elastic element 62C is compressively limited between the contact element 612C and the overheating breaking element 5C to have a first elastic force.

The push switch of the present embodiment further has a second elastic member, the second elastic member is a spring 7C, and the first conductive member 2C, the spring 7C and the cantilever conductive member 4C are integrally formed, the spring 7C has a second elastic force, and the second elastic force acts on the operating member 61C.

By operating the operating member 61C to relatively displace the protrusion 12C as a button of an automatic ballpoint pen, a user selectively contacts or separates the cantilever conductor 4C with or from the second conductor 3C. When the operating element 61C is displaced and positioned toward the cantilever conductive element 4C, the support seat 6122C of the contact element 612C presses a silver contact 41B position close to the cantilever conductive element 4C, so that the cantilever conductive element 4C contacts the second conductive element 3B to form a power-on state, and the first elastic element 62B is further compressed to increase the first elastic force, wherein the first elastic force is greater than the second elastic force.

Referring to fig. 11, when the external conductive device connected to the first conductive member 2C or the second conductive member 3C is in an abnormal state, for example, the external conductive device is a socket, when oxides, dust, incomplete insertion of the metal pin, deformation of the metal pin, etc. exist between the metal pin of the plug and the socket, the conductive portion of the socket generates a large amount of heat energy, the heat energy is transferred to the cantilever conductive member 4C through the first conductive member 2C or the second conductive member 3C, and then transferred to the overheating destructive member 5C through the support seat 6122C, the limit post 6121C and the first elastic member 62C of the contact member 612C, the overheating destructive member 5C absorbs the heat energy and gradually reaches its melting point, at this time, the overheating destructive member 5C starts to gradually lose rigidity, for example, the overheating destructive member 5C is made of a tin-bismuth alloy, although its melting point is 138 ℃, but when the melting point is close to, the rigidity is lost, and at the same time, under the action of the first elastic force, the overheating destructive element 5C is pressed by the first elastic element 62C to deform or even destroy the overheating destructive element, so that the first elastic element 62C cannot be limited any more, the first elastic element 62C passes through the overheating destructive element 5C and extends out of the through hole 6113C, the first elastic force is reduced or lost, at the moment, the second elastic force is greater than the first elastic force, so that the cantilever conductive element 4C is forced to reset, the silver contact 41C of the cantilever conductive element 4C is separated from the second conductive element 3C, and a power-off state is formed, and the overheating protection effect is achieved.

Referring to fig. 12 and fig. 2 in addition to fig. 9, it should be noted that the above-mentioned type of the overheating destructive elements 5C is not limited to the circular sheet, and in the fourth embodiment disclosed in fig. 12, the overheating destructive elements 5D are the same type as the overheating destructive elements 5A in the first embodiment, and only the size ratio is slightly different. Thus, the current-carrying state is obtained as shown in fig. 13, or a power-off state is obtained when the overheating breaker 5D is broken as shown in fig. 14. Since the operation principle is substantially the same as that of the third embodiment, it will not be repeated here.

Referring to fig. 15 and 16, a fifth embodiment of the present invention is shown, in which the overheating destruction switch of the previous embodiment is applied to a socket having a switch, and in this embodiment, the overheating destruction switch is applied to an extension cord socket including three sets of socket holes 81, and the extension cord socket includes:

a housing member 8 having an upper housing member 8A and a lower housing member 8B, the upper housing member 8A including three sets of socket holes 81, each socket hole 81 including a live jack 811 and a neutral jack 812.

A live wire conductive member 9 installed on the housing member 8, wherein three live wire connection terminals 92 are disposed at intervals on the live wire conductive member 9, corresponding to three independent live wire insertion pieces 91, each live wire insertion piece 91 includes a live wire insertion slot 911, and the live wire insertion slot 911 corresponds to the live wire insertion hole 811.

And a neutral conductor 10 mounted to the housing member 8, wherein the neutral conductor 10 has three neutral slots 101 spaced apart from each other, and each of the neutral slots 101 corresponds to the neutral jack 812.

Three overheating damage switches 20, the overheating damage switches 20 are as described in the first to fourth embodiments, wherein the first conductive member 201 of the overheating damage switch 20 is connected to the live line connection terminal 92 or the live line plug 91 of the live line conductive member 9, the second conductive member 202 is connected to the live line plug 91 or the live line connection terminal 92 of the live line conductive member 9, the first conductive member 201 is connected to the live line plug 91 in the present embodiment, and the second conductive member 202 is connected to the live line connection terminal 92 of the live line conductive member 9 in the present embodiment (this part of the connection features are already described in the previous embodiments and are not described herein again). Thus, when the working temperature of any live wire insertion piece 91 of the extension line socket abnormally rises, heat energy can be transmitted to the overheating damage switch 20 through the first conductive piece 201 or the second conductive piece 202, so that the overheating damage switch 20 is broken due to overheating, the power supply is stopped, and the live wire insertion piece 91 with the abnormal temperature can immediately stop the power supply, so that the working temperature does not continuously rise and slowly drops. Since each overheating damage switch 20 independently controls one set of live wire jack 811 and neutral wire jack 812, when one set of overheating damage switches 20 is powered off due to overheating, the other sets of live wire jack 811 and neutral wire jack 812 can still continue to be used normally.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (8)

1. An overheating destruction switch, comprising:

a base body having an accommodating space;

a first conductive member penetrating the base;

the second conductive piece penetrates through the seat body;

a movable conductive member disposed in the accommodating space, electrically connected to the first conductive member, and selectively connected to the second conductive member;

an overheat destruction element, including a portion to be destroyed and a supporting portion, the portion to be destroyed can be destroyed under a destruction temperature, the supporting portion is connected with the portion to be destroyed, a displacement space is defined by an axial peripheral space of the supporting portion, the portion to be destroyed is located at an outer edge of the supporting portion, and the portion to be destroyed is located outside the displacement space;

a first elastic member abutting against the portion to be destroyed, so that at the destruction temperature, the portion to be destroyed is pushed by the first elastic member to displace toward the displacement space;

an operating assembly assembled on the seat body, wherein the operating assembly comprises an operating piece and the first elastic piece, the operating piece comprises an accommodating pipe part and a contact piece, the accommodating pipe part is provided with an opening, the overheating damage piece is fixedly arranged at an assembling position far away from the opening, the first elastic piece is positioned in the accommodating pipe part, a first end of the first elastic piece contacts the part to be damaged, the contact piece contacts the movable conductive piece, and the first elastic piece is compressively limited between the contact piece and the overheating damage piece to have a first elastic force;

the second elastic piece is provided with a second elastic force, and the second elastic force acts on the operating piece;

when the operating element is at a first position, the first elastic force forces the contact element to press against the movable conductive element, so that the movable conductive element is in contact with the second conductive element to form a power-on state, in the power-on state, current passes through the first conductive element, the movable conductive element and the second conductive element to generate heat energy, the heat energy is transmitted to the overheating destruction element through the contact element and the first elastic element, the part to be destroyed absorbs the heat energy and is destroyed at the destruction temperature, so that the part to be destroyed is pushed by the first elastic element to move towards the displacement space, so that the first elastic force is reduced or lost, at the moment, the second elastic force is greater than the first elastic force, the operating element is forced to move to a second position by the second elastic force, and the movable conductive element is separated from the second conductive element, so that a power-off state is formed.

2. The overheating breaker switch according to claim 1, wherein the operating member further comprises a limiting member, the limiting member is a cylinder and defines a space, the limiting member abuts against the overheating breaker so that the overheating breaker is fixedly disposed at the assembling position; the first elastic member is fitted into the space.

3. The overheating damage switch according to claim 1, wherein the first resilient member is a spring, and the first end of the first resilient member is sleeved on a sleeved portion of the overheating damage switch.

4. The overheating kill switch of claim 1, wherein the contact member is a hollow heat conductive housing, the contact end contacts the movable conductive member, and a second end of the first resilient member extends into the contact member.

5. The overheating damage switch according to claim 1, wherein the portion to be damaged and the supporting portion are integrally formed of the same material.

6. The overheating damage switch of claim 1, wherein the portion to be damaged and the supporting portion are made of different materials, and a temperature at which the supporting portion is damaged due to overheating is defined as a supporting portion damage temperature, and the supporting portion damage temperature is relatively higher than the damage temperature.

7. The overheating damage switch according to claim 1, wherein the portion to be damaged is protruded with a engaging portion toward the first elastic member for the first elastic member to engage.

8. A socket having a switch, comprising the overheating destruction switch of any one of claims 1 to 7, a live blade, a live conductor, a neutral conductor and a housing, wherein:

the casing comprises a live wire jack and a zero wire jack;

the live wire inserting piece is electrically connected with the first conductive piece and comprises a live wire inserting slot, and the live wire inserting slot corresponds to the live wire jack;

the live wire conductive piece comprises a live wire connecting end which is electrically connected with the second conductive piece;

the zero line conductive piece comprises a zero line slot, and the zero line slot corresponds to the zero line jack.

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