Overheat damage type power-off method for switch
阅读说明:本技术 开关的过热破坏式断电方法 (Overheat damage type power-off method for switch ) 是由 易湘云 于 2019-01-25 设计创作,主要内容包括:本发明为一种开关的过热破坏式断电方法,是使一第一弹性力同时施力于一过热破坏件及一活动导电件,且施力方向使该活动导电件同时接触一第一导电件与一第二导电件,以形成一电流通路。一第二弹性力作用于该活动导电件,且施力方向使该活动导电件远离该第一导电件或该第二导电件。该过热破坏件设置在一非电流传递必要路径上,且远离该活动导电件。当该过热破坏件在一破坏温度下破坏或变形,该第一弹性力因此变小或丧失,该第二弹性力此时迫使该活动导电件改变位置,以中断该电流通路。(The invention relates to an overheat destruction type power-off method of a switch, which is characterized in that a first elastic force simultaneously applies force to an overheat destruction part and a movable conductive part, and the force application direction enables the movable conductive part to simultaneously contact a first conductive part and a second conductive part so as to form a current path. A second elastic force acts on the movable conductive piece, and the force application direction enables the movable conductive piece to be far away from the first conductive piece or the second conductive piece. The overheating breaking element is arranged on a non-current transmission necessary path and is far away from the movable conductive element. When the overheat breaking element is broken or deformed at a breaking temperature, the first elastic force is reduced or lost, and the second elastic force forces the movable conductive element to change position to interrupt the current path.)
1. An overheat destruction type power-off method of a switch, comprising the steps of:
simultaneously applying force to an overheating destruction component and a movable conductive component by a first elastic force of a first elastic component through an operating component, wherein the force application direction of the first elastic force enables the movable conductive component to simultaneously contact a first conductive component and a second conductive component so as to form a current path;
enabling a second elastic force of a second elastic piece to act on the movable conductive piece through the operating piece, wherein the force application direction of the second elastic force enables the movable conductive piece to be far away from the first conductive piece or the second conductive piece;
when the movable conductive piece simultaneously contacts the first conductive piece and the second conductive piece, the overheating destruction piece is arranged on a non-current transmission necessary path, and the overheating destruction piece is arranged at a position far away from the movable conductive piece, and on the non-current transmission necessary path, the overheating destruction piece can receive the heat energy of the current path;
the heat energy of the current path is transmitted to the overheating damage component through the movable conductive component and the first elastic component in sequence;
when the overheat damage component receives the heat energy and the temperature rises to be close to a damage temperature, the overheat damage component is damaged or deformed by means of the force application of the first elastic force, the first elastic component deforms accordingly, the force application of the first elastic force on the movable conductive component is reduced or lost, the second elastic force forces the movable conductive component to change positions, and the first conductive component and the second conductive component are not conducted simultaneously by the movable conductive component any more, so that the current path is interrupted.
2. The method of claim 1, wherein the overheat damage unit has a damage temperature of 100-400 ℃.
3. The method of claim 2, wherein the overheating destructive element is made of plastic material.
4. The method of claim 2, wherein the overheating destructive element is made of metal or alloy.
5. The method of claim 4, wherein the alloy comprises at least two of Bi, Cd, Sn, Pb, Dy and in as main components.
6. The method of claim 4, wherein the alloy is a tin bismuth alloy, or one or a combination of the following metals are added to tin and bismuth: cadmium, indium, silver, tin, lead, antimony and copper.
Technical Field
The invention relates to an overheat destruction type power-off method of a switch, in particular to a power-off method different from a fuse and a bimetallic strip.
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 for 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 for each push operation, such as disclosed in chinese patent No. CN 103441019.
Taiwan patent No. 321352 discloses a switch structure with a fuse, but the fuse is located in a current transmission necessary path, and the fuse needs to rely on the passage of current for protection, especially the overload current has an opportunity to melt the fuse. Since the fuse needs to pass current when working, but must be melted off when the current is too large, the fuse is usually made of lead-tin alloy and zinc with low melting point, and the fuse has a larger resistance and a much lower conductivity than copper, but because the fuse is located on the necessary path for current transmission, there is a problem of energy consumption.
Taiwan patent No. M382568 discloses a bi-polar auto-power-off safety switch, but the bi-metallic strip must be located in a current transmission path, and needs to be deformed by the heat energy of the passing current, especially, the overload current is needed to deform the bi-metallic strip to interrupt the circuit, so that the energy consumption problem is also high.
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 sliding over heated stabilizing heating element", an experiment of copper sheet distance and temperature difference, and it was found from the test of US9698542 patent TABLE2 that if the overheated socket was located at position 10 of TABLE2 experiment and the overload protection switch was located at
Because there are many situations of socket overheating, and the distance between the socket and the bimetallic strip of the overload protection switch can cause great temperature difference, in order to effectively achieve the overheat protection, the overload protection switch is arranged on each socket of the extension line socket, but the overload protection in the bimetallic strip type has the defect of energy consumption, and the price is also high, if the overload protection is arranged on each socket of the extension line socket, the serious problem of energy consumption can occur, the price can also greatly rise, and the popularization and the use are not facilitated.
Disclosure of Invention
The invention aims to: the utility model provides an overheat destruction formula outage method of switch, solves the above-mentioned technical problem that exists among the prior art.
For the above reasons, in order to overcome the defect, the present invention provides an overheat destruction type power-off method for a switch, comprising the following steps:
simultaneously applying force to an overheating destruction component and a movable conductive component by a first elastic force of a first elastic component through an operating component, wherein the force application direction of the first elastic force enables the movable conductive component to simultaneously contact a first conductive component and a second conductive component so as to form a current path; enabling a second elastic force of a second elastic piece to act on the movable conductive piece through the operating piece, wherein the force application direction of the second elastic force enables the movable conductive piece to be far away from the first conductive piece or the second conductive piece; when the movable conductive piece simultaneously contacts the first conductive piece and the second conductive piece, the overheating destruction piece is arranged on a non-current transmission necessary path, and the overheating destruction piece is arranged at a position far away from the movable conductive piece, and on the non-current transmission necessary path, the overheating destruction piece can receive the heat energy of the current path; the heat energy of the current path is transmitted to the overheating damage component through the movable conductive component and the first elastic component in sequence; when the overheat damage component receives the heat energy and the temperature rises to be close to a damage temperature, the overheat damage component is damaged or deformed by means of the force application of the first elastic force, the first elastic component deforms accordingly, the force application of the first elastic force on the movable conductive component is reduced or lost, the second elastic force forces the movable conductive component to change positions, and the first conductive component and the second conductive component are not conducted simultaneously by the movable conductive component any more, so that the current path is interrupted.
Further, the damage temperature of the overheating damage piece is between 100 ℃ and 400 ℃.
Further, the overheating destructive element is made of plastic materials, including thermoplastic plastics and thermosetting plastics; alternatively, the overheating destructive element is made of a metal or an alloy, the main component of the alloy comprises more than two of bismuth, cadmium, tin, lead, dysprosium, and indium, for example, the alloy is a tin-bismuth alloy, or one or a combination of the following metals is additionally added to tin and bismuth: cadmium, indium, silver, tin, lead, antimony and copper.
According to the technical characteristics, the following effects can be achieved:
1. the overheating damage piece is positioned on a non-current transmission necessary path, the overheating damage piece is not a necessary element for transmitting current, even if the overheating damage piece is not as conductive as copper, the current can select the current transmission necessary path with the minimum resistance to flow, and therefore the overheating damage piece is arranged on the non-current transmission necessary path, and energy consumption can be effectively avoided.
2. The method of the invention is easy to use in the existing switch, does not increase the volume of the switch, is applied to the known rocker switch, push switch and the like, has very limited increased cost and is easy to implement.
3. Because of small volume and low cost, the thermal destruction power-off switch can be applied to the existing electric appliances, for example, when the thermal destruction power-off switch is applied to an extension cord, if each socket of the extension cord is respectively provided with one thermal destruction power-off switch, the safety of each group of socket holes corresponding to each switch can be ensured in use. The defects that the existing double-metal sheet consumes energy, is expensive and needs a plurality of groups of socket holes 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 diagram of a second embodiment of the present invention illustrating another rocker switch configuration and the other rocker switch in a closed position.
Fig. 5 is a schematic view of a second embodiment of the present invention, illustrating the alternate rocker switch in an 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, so that the other rocker switch returns to the closed position from the open position.
FIG. 7 is a schematic view of a third embodiment of the invention, showing a push switch configuration and the push switch in the off position.
Fig. 8 is a schematic view of a third embodiment of the present invention, showing the push switch in the on position.
Fig. 9 is a schematic view of a third 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 push switch returns from the on position to the off position.
Description of reference numerals: 1A-a seat body; 11A-an accommodation space; 2A-a first electrically conductive member; 3A-a second electrically conductive member; 31A-second silver contact; 4A-rocker conductive member; 41A-first silver contact; 5A-an overheating destructive element; 51A-connecting part; 52A-the portion to be destroyed; 53A-support; 531A-displacement space; 54A-a nesting portion; 6A-operating components; 610A-pivot point; 61A-an operating member; 611A-an accommodating tube portion; 612A-a contact; 62A-a first resilient member; 621A-one end; 622A-the other end; 63A-a first protrusion; 7A-a second resilient member; 10A-a second protrusion; 1B-a seat body; 11B-an accommodation space; 2B-a first electrically conductive member; 3B-a second electrically conductive member; 31B-second silver contacts; 4B-rocker conductive member; 41B-first silver contacts; 5B-an overheating destructive element; 51B-a connecting part; 52B-the portion to be destroyed; 53B-a support; 531B-displacement space; 54B-a nesting portion; 6B-operating the components; 61B-an operating member; 610B-pivot point; 611B-an accommodating tube portion; 612B-a contact; 62B-a first resilient member; 621B-a first spring; 622B-second spring; 7B-a second resilient member; 1C-seat body; 11C — an accommodation space; 12C — a projection; 2C-a first electrically conductive member; 3C-a second conductive member; 31C-second silver contacts; 4C-cantilever conductive member; 41C — first silver contacts; 5C-overheating damage; 6C-operating the components; 61C-an operating member; 611C-an accommodating tube portion; 6111C-assembly position; 6112C-opening; 6113C-through hole; 612C-contact; 6121C-spacing post; 6122C-supporting seat; 613C-a limiting member; 6131C-space; 62C-a first resilient member; 621C-first end; 622C — second end; 7C-reed.
Detailed Description
The technical terms of the invention are defined as follows: the current transmission necessary path refers to a necessary path for transmitting current, any element in the current transmission necessary path must be an electric conductor, and when any element in the current transmission necessary path is damaged, the current cannot be transmitted continuously, for example, when a fuse is arranged in a current path, the fuse is one element in the current transmission necessary path. The non-current-transfer-necessary path means a path that is not necessary for transferring current, and an element of the non-current-transfer-necessary path may be a conductor or an insulator.
In the embodiments of the present invention, the first silver contact and the second silver contact are provided to improve the current conduction efficiency between the rocker conductive member and the second conductive member, but it is also possible to directly contact the rocker conductive member with the second conductive member if the first silver contact and the second silver contact are not provided, that is, the first silver contact and the second silver contact are not necessary elements. In the following description, rocker conductive member contacting or separating from the second conductive member implies that the first silver contact contacts or separates from the second silver contact.
In the following description, the destruction of the overheated destruction piece or the portion to be destroyed includes modes such as loss of rigidity, softening, deformation, melting, vaporization, cracking, decomposition, and coking.
Referring to fig. 1, a first embodiment of the present invention is illustrated in the embodiment of an overheating destructive switch, which is a rocker switch, for explaining the overheating destructive power-off method of the present invention, and fig. 1 shows the rocker switch in an off state. This rocker switch includes:
a
An overheating
An
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 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 sequentially through the contact element 612A and the first elastic element 62A, the to-be-destroyed portion 52A of the overheating destructive member 5A absorbs the heat energy to gradually reach a destruction temperature, at this time, the to-be-destroyed portion 52A of the overheating destructive member 5A is destroyed, and begins to lose rigidity gradually, 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
Referring to fig. 2, when the rocker
Referring to fig. 4, a second embodiment of the present invention is also illustrated with an overheating destructive switch, which is also a rocker switch, for explaining the overheating destructive power-off method of the present invention, and fig. 4 shows the rocker switch in an off state. This rocker switch includes:
a
An overheating
An
A second
Referring to fig. 5, a 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 metal pins, deformation of metal pins, etc. exist between the metal pins 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 4B through the first conductive member 2B or the second conductive member 3B, and then is transferred to the overheating destructive member 5B sequentially through the contact member 612B and the second spring 622B, the to-be-destroyed portion 52B of the overheating destructive member 5B absorbs the heat energy and gradually reaches its destruction temperature, at this time, the to-be-destroyed portion 52B of the overheating destructive member 5B is destroyed, and begins to gradually lose rigidity, for example, the material of the overheating destructive member 5B is a tin-bismuth alloy, although the melting point is 138 ℃, the rigidity of the portion to be destroyed of the overheating destruction element 5B begins to be lost when the melting point is close to the melting point, and the first elastic force is applied to the portion to be destroyed 52B of the overheating destruction element 5B by the first spring 621B and the second spring 622B to gradually displace toward the displacement space 531B, 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
Referring to fig. 5, when the rocker
Referring to fig. 7, the third embodiment of the present invention also uses an overheating destructive switch to describe the overheating destructive power-off method of the present invention, where the embodiment is a pressing switch, and fig. 7 shows a state where the pressing switch is turned off. The push switch comprises:
a
An overheating
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. 8, the user operates the
Referring to fig. 9, 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 large 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 is transferred to the overheating destructive member 5C through the contact member 612C and the first elastic member 62C in sequence, the overheating destructive member 5C absorbs the heat energy and gradually reaches its destruction temperature, at this time, the overheating destructive member 5C gradually loses rigidity, for example, the overheating destructive member 5C is made of tin-bismuth alloy, although its melting point is 138 ℃, but begins to lose rigidity when approaching the melting point, at the same time, under the action of the first elastic force, the overheating destructive element 5C is pressed and deformed or even destroyed by the first elastic element 62C, and the first elastic element 62C cannot be limited any more, so that the first elastic force is reduced or lost, at this time, the second elastic force is greater than the first elastic force, so that the cantilever conductive element 4C is forced to reset, the first silver contact 41C of the cantilever conductive element 4C is separated from the second silver contact 31C of the second conductive element 3C, and a power-off state is formed, thereby achieving the overheating protection effect.
Referring to fig. 8, when the cantilever
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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