Switch for thermal destruction power-off and socket with switch
阅读说明:本技术 热破坏断电的开关及具有该开关的插座 (Switch for thermal destruction power-off and socket with switch ) 是由 易湘云 于 2018-12-21 设计创作,主要内容包括:本发明为一种热破坏断电的开关及具有该开关的插座,该热破坏断电的开关有第一导电件、第二导电件、活动导电件、过热破坏件、操作组件及第二弹性件。该活动导电件导通该第一导电件及第二导电件,该操作组件有一操作件及一第一弹性件,该第二弹性件作用于该操作件,该过热破坏件抵于该限制件,使该第一弹簧被压缩于该接触件与该过热破坏件之间而有一第一弹性力,该第二弹性件有一第二弹性力。该过热破坏件因过热被破坏时,该第一弹性力会小于该第二弹性力,该活动导电件断开第一导电件及第二导电件,以达到过热保护的功效。该插座则是包含该热破坏断电的开关。(The invention relates to a switch for thermal destruction power failure and a socket with the switch. The movable conductive piece is connected with the first conductive piece and the second conductive piece, the operating assembly is provided with an operating piece and a first elastic piece, the second elastic piece acts on the operating piece, the overheating damage piece is abutted against the limiting piece, so that the first spring is compressed between the contact piece and the overheating damage piece to form a first elastic force, and the second elastic piece is provided with a second elastic force. When the overheating damage component is damaged due to overheating, the first elastic force is smaller than the second elastic force, and the movable conductive component disconnects the first conductive component and the second conductive component, so that the overheating protection effect is achieved. The socket is a switch containing the thermal destruction power-off.)
1. A thermally destructive power disconnect 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;
a thermal destruction element capable of being destroyed at a destruction temperature of 100 ℃ to 250 ℃;
an operating assembly assembled on the seat body, wherein the operating assembly comprises an operating piece and a first elastic piece, the operating piece comprises a contact piece and a limiting piece, the contact piece is contacted with the movable conductive piece, the overheating breaking piece is propped against the limiting piece, and the first elastic piece is compressively limited between the contact piece and the overheating breaking 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 overheating destruction element absorbs the heat energy and is destroyed at the destruction temperature, so that the first elastic force is reduced or lost, the second elastic force is larger than the first elastic force at the moment, 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 to form a power-off state.
2. The thermally destructive power disconnect switch of claim 1 wherein the second resilient member is a spring.
3. The switch of claim 1, wherein the first conductive member and the second conductive member are arranged in a longitudinal direction, the operating member has a length in the longitudinal direction, the first elastic member is disposed at a center of the length, and the second elastic member is spaced from the center of the length.
4. The switch of claim 1, wherein the movable conductive member is a rocker conductive member straddling the first conductive member, and the contact member slides on the rocker conductive member, so that the rocker conductive member contacts or separates from the second conductive member in a rocker motion.
5. The switch of claim 1, wherein the operating member has a pivot point, the pivot point is pivotally connected to the base, and the operating member has limited reciprocal rotation about the pivot point.
6. The switch according to claim 1, wherein the operating member further comprises a central tube and an inner tube, a through hole is formed at an end of the central tube away from the movable conductive member, the limiting member is disposed at a periphery of the through hole, the central tube tightly covers the inner tube, the inner tube has a through receiving space, the first elastic element is disposed in the receiving space, two ends of the receiving space are respectively provided with a first opening and a second opening, the contact member partially penetrates into the receiving space, the contact member partially protrudes out of the first opening, and a diameter width of the through hole is larger than a diameter width of the first elastic element.
7. The thermally destroyed switch according to claim 1, wherein the contact member is a hollow heat conductive housing member, the heat conductive housing member includes an open end and an arc-shaped contact end, the contact end contacts the movable conductive member, and an end of the first resilient member extends into the open end.
8. The switch of claim 1, wherein the thermal damage member is a circular plate, a post, a cap, a block, a sphere, an irregularity, or a radial plate.
9. The thermally destructive power disconnect switch of claim 1, wherein the movable conductive member is a cantilevered conductive member, the second resilient member is a spring, and the first conductive member, the spring and the cantilevered conductive member are integrally formed.
10. The switch of claim 9, wherein the housing has a protrusion, the operating member is disposed on the protrusion, and the operating member has limited reciprocation at the protrusion.
11. The switch of claim 9, wherein the contact member is a supporting heat conducting member having a position-limiting post and a supporting seat, the position-limiting post extends into one end of the first elastic member, and the supporting seat contacts the cantilever conductive member.
12. The switch of claim 9, wherein the operating member further comprises a central cylinder and an inner cylinder, the central cylinder has a through hole at an end thereof away from the cantilever conductive member, the limiting member is disposed at a periphery of the through hole, the central cylinder tightly covers the inner cylinder, the inner cylinder has a through receiving space, the first elastic element is disposed in the receiving space, two ends of the receiving space are respectively provided with a first opening and a second opening, and a diameter width of the through hole is larger than a diameter width of the first elastic element.
13. A socket having a switch, comprising: comprising the thermal destruction power switch of any one of claims 1 to 12, a live blade, a live conductor, a neutral conductor and a casing, wherein:
the casing comprises a live wire jack and a zero wire jack;
the live wire inserting piece is electrically connected with the second 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 first conductive piece;
the zero line conductive piece comprises a zero line slot, and the zero line slot corresponds to the zero line jack.
14. The socket of claim 13, wherein the switches for thermal destruction power failure are plural; the number of the live wire jacks is plural; the fire wire inserting pieces are a plurality of, and each fire wire inserting piece is electrically connected with each second conductive piece independently; the live wire conductive member comprises a plurality of live wire connecting ends, and each live wire connecting end is electrically connected with each first conductive member; the zero line jacks are plural; the zero line slots are plural, and all the zero line slots are connected in series with the zero line conductive piece.
Technical Field
The present invention relates to a switch for thermal destruction power-off and a socket having the same, and more particularly, to a power-off structure different from a fuse and a bimetal, in which an overheating destruction element performs destruction by thermal energy transfer without depending on current, and a socket having the same.
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 slots sharing an overheating and stabilizing heating element", and found from the test of US9698542 patent TABLE 2 that if the overheated socket is located at
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
Accordingly, the extension cord socket and the switch thereof used in the related art have the above-described drawbacks.
Therefore, the present invention provides a switch for thermal destruction power cut, 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; a thermal destruction element capable of being destroyed at a destruction temperature of 100 ℃ to 250 ℃; an operating assembly assembled on the seat body, wherein the operating assembly comprises an operating piece and a first elastic piece, the operating piece comprises a contact piece and a limiting piece, the contact piece is contacted with the movable conductive piece, the overheating breaking piece is propped against the limiting piece, and the first elastic piece is compressively limited between the contact piece and the overheating breaking 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 overheating destruction element absorbs the heat energy and is destroyed at the destruction temperature, so that the first elastic force is reduced or lost, the second elastic force is larger than the first elastic force at the moment, 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 to form a power-off state.
The second elastic member is a spring.
The arrangement direction of the first conductive piece and the second conductive piece is defined as a longitudinal direction, the operating piece has a length in the longitudinal direction, the first elastic piece is arranged at a central position of the length, and the second elastic piece is arranged at a distance from the central position at the position of the length.
The movable conductive piece is a wane conductive piece, the wane conductive piece straddles the first conductive piece, and the contact piece slides on the wane conductive piece, so that the wane conductive piece is contacted with or separated from the second conductive piece in a wane motion mode.
The operating member is provided with a pivot point which is pivoted on the seat body, and the operating member rotates in a reciprocating manner in a limited way by taking the pivot point as an axis.
The operating element further comprises a central cylinder and an inner cylinder, wherein one end of the central cylinder, which is far away from the movable conductive element, is provided with a through hole, the limiting element is arranged at the periphery of the through hole, the central cylinder is tightly sleeved on the inner cylinder, the inner cylinder is provided with a through accommodating space, the first elastic element is arranged in the accommodating space, two ends of the accommodating space are respectively provided with a first opening and a second opening, the contact element partially penetrates into the accommodating space, the contact element partially protrudes out of the first opening, and the diameter width of the through hole is larger than that of the first elastic element.
The contact element is a hollow heat conduction shell element, the heat conduction shell element comprises an opening end and an arc-shaped contact end, the contact end is contacted with the movable conductive element, and one end of the first elastic element extends into the opening end.
The overheating damage piece is a circular sheet, a column, a cap, a block, a sphere, an irregular body or a radial sheet.
The movable conductive piece is a cantilever conductive piece, the second elastic piece is a reed, and the first conductive piece, the reed and the cantilever conductive piece are integrally formed.
The seat body is provided with a convex part, the operating part is sleeved on the convex part, and the operating part has limited reciprocating movement in the convex part.
The contact element is a supporting heat-conducting element, the supporting heat-conducting element is provided with a limiting column and a supporting seat, the limiting column extends into one end of the first elastic element, and the supporting seat is contacted with the cantilever conductive element.
The operating element further comprises a central cylinder and an inner cylinder, wherein a through hole is formed in one end, away from the cantilever conductive piece, of the central cylinder, the limiting piece is arranged on the periphery of the through hole, the central cylinder is tightly sleeved on the inner cylinder, a through containing space is formed in the inner cylinder, the first elastic element is arranged in the containing space, a first opening and a second opening are respectively formed in two ends of the containing space, and the diameter width of the through hole is larger than that of the first elastic element.
The invention also provides a socket with a switch, which comprises the switch for thermal destruction power failure, 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 second 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 first conductive piece; the zero line conductive piece comprises a zero line slot, and the zero line slot corresponds to the zero line jack.
The switches for the thermal destruction power failure are plural; the number of the live wire jacks is plural; the fire wire inserting pieces are a plurality of, and each fire wire inserting piece is electrically connected with each second conductive piece independently; the live wire conductive member comprises a plurality of live wire connecting ends, and each live wire connecting end is electrically connected with each first conductive member; the zero line jacks are plural; the zero line slots are plural, and all the zero line slots are connected in series with the zero line conductive piece.
The above technical features have the following advantages:
1. 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.
2. 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.
3. Because the volume is small and the cost is low, the extension cord switch is suitable for being applied to the extension cord switch, and if each socket of the extension cord is respectively provided with a switch for thermal destruction power failure, the safety of each group of socket holes corresponding to each switch in use can be ensured. The disadvantage that the existing double-metal sheet is expensive and multiple groups of socket holes need to share one overload protection switch can be overcome. And the phenomenon that the overload protection switch is not tripped because the overload protection switch does not reach the tripping temperature because the socket hole far away from the overload protection switch is overheated to cause temperature rise is avoided.
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 schematic view of a first embodiment of the present invention, illustrating the rocker switch in an on position.
Fig. 3 is a schematic diagram of a 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. 4 is a schematic view of a second embodiment of the present invention showing a push switch configuration and the push switch in the off position.
Fig. 5 is a schematic view of a second embodiment of the present invention, showing the push switch in the on position.
Fig. 6 is a schematic view 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 to form an open circuit.
Fig. 7 is an exploded view of a thermal destruction power cutoff switch for an extension cord socket according to a third embodiment of the present invention.
Fig. 8 is a structural view of a thermal destruction power cutoff switch for an extension cord socket according to a third embodiment of the present invention.
Description of reference numerals: 1A-a seat body; 11A-an accommodation space; 2A-a first electrically conductive member; 3A-a second electrically conductive member; 4A-rocker conductive member; 41A-silver contacts; 5A-an overheating destructive element; 6A-operating components; 61A-an operating member; 610A-central cylinder; 611A-pivot point; 612A-a limiting member; 613A-heat conducting shell; 6131A-open end; 6132A-contact end; 614A-inner cylinder; 6141A-an accommodating space; 6142A-first opening; 6143A-second opening; 615A-through hole; 62A-a first resilient member; 7A-a second resilient member; 1B-a seat body; 11B-an accommodation space; 12B-a projection; 2B-a first electrically conductive member; 3B-a second electrically conductive member; 4B-cantilever conductive member; 41B-silver contacts; 5B-an overheating destructive element; 6B-operating the components; 61B-an operating member; 610B-central cylinder; 612B-a limiting member; 613B-supporting a heat-conducting member; 6131B-limit post; 6132B-supporting seat; 614B-inner cylinder; 6141B-an accommodating space; 6142B-first opening; 6143B-second opening; 615B-a through hole; 62B-a first resilient member; 7B-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; 20-thermal destruction of the power-off switch; 201-a first electrically conductive member; 202-a second electrically conductive member.
Detailed Description
In combination with the above technical features, the main functions of the socket and the switch for thermal destruction power-off thereof according to the present invention will be clearly shown in the following embodiments.
Referring to fig. 1, a first embodiment of the present invention is a switch for thermal destruction power failure, and in this embodiment, the switch is a rocker switch, and fig. 1 shows a state where the rocker switch is turned off. This rocker switch includes:
a
A first
A movable conductive member, disposed in the
An overheating
When the working temperature is abnormally increased, it is preferable that an open circuit is generated in the live wire, so that the first
The rocker switch of this embodiment further has an
The rocker switch of this embodiment further has a second
Referring to fig. 2, a user operates the
Referring to fig. 3, 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 large 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 heat conductive casing member 613A and the first elastic member 62A, the overheating destructive member 5A absorbs the heat energy and gradually reaches its melting point of the material, and at this time, the overheating destructive member 5A gradually loses rigidity, for example, the overheating destructive member 5A 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 destructive element 5A is pressed and deformed or even destroyed by the first elastic element 62A, in this embodiment, the overheating destructive element 5A originally shown in fig. 1 is destroyed and deformed, and the overheating destructive element 5A is in the shape shown in fig. 3, that is, the overheating destructive element 5A is divided into two parts, so that the first elastic element 62A passes through the overheating destructive element 5A and extends out of the through hole 615A, so that the first elastic force is reduced or lost, and at this time, the second elastic force is greater than the first elastic force. In this embodiment, the arrangement direction of the first
Referring to fig. 4, a second embodiment of the present invention is a switch for thermal destruction power failure, and in this embodiment, the switch is pressed, and fig. 4 shows a state where the pressed switch is turned off. The push switch comprises:
a
A first
A movable conductive member, which is a cantilever
An overheating
When the working temperature is abnormally increased, it is preferable that the open circuit is generated in the live wire, so that the first
The push switch of this embodiment further has an
The push switch of the present embodiment further has a second elastic member, the second elastic member is a
Referring to fig. 5, the user operates the
Referring to fig. 6, 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 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 4B through the first conductive member 2B or the second conductive member 3B, and then transferred to the overheating destructive member 5B through the support seat 6132B, the limit post 6131B and the first elastic member 62B of the support conductive member 613B, 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, although its melting point is 138 ℃, but it begins to lose rigidity near the melting point, and at the same time, under the action of the first elastic force, the overheating destructive element 5B is pressed by the first elastic element 62B to deform or even destroy, and the first elastic element 62B can not be limited any more, in the present embodiment, the overheating breaking piece 5B originally presented in fig. 4 is deformed by being destroyed, and the overheating breaking piece 5B takes the shape shown in fig. 6, that is, the overheating breaking piece 5B is divided into two parts, so that the first elastic member 62B passes through the overheating breaking member 5B and extends out of the through hole 615B, causing the first elastic force to be reduced or lost, and the second elastic force is greater than the first elastic force, thereby forcing the cantilever conductor 4B to reset, and the silver contact 41B of the cantilever conductor 4B is separated from the second conductor 3B to form a power-off state, so as to achieve the overheat protection function.
Referring to fig. 7 and 8, a third embodiment of the present invention is shown, in which the rocker switch for thermal destruction and power failure of the foregoing embodiment is applied to an extension socket including three sets of socket holes 81, and the extension socket includes:
a
A live wire
And a
Three thermal destruction switches 20, the thermal destruction switches 20 are as described in the foregoing first to second embodiments, wherein the first
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.
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