CN204117924U - A kind of open-type load switch - Google Patents

A kind of open-type load switch Download PDF

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Publication number
CN204117924U
CN204117924U CN201420411733.XU CN201420411733U CN204117924U CN 204117924 U CN204117924 U CN 204117924U CN 201420411733 U CN201420411733 U CN 201420411733U CN 204117924 U CN204117924 U CN 204117924U
Authority
CN
China
Prior art keywords
seat
open
memory alloy
load switch
type load
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420411733.XU
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Chinese (zh)
Inventor
陈天翔
张辑
刘勇铭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen University of Technology
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Xiamen University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xiamen University of Technology filed Critical Xiamen University of Technology
Priority to CN201420411733.XU priority Critical patent/CN204117924U/en
Application granted granted Critical
Publication of CN204117924U publication Critical patent/CN204117924U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of open-type load switch, on porcelain seat, two blade standing beneath of plug-in strip arrange at least one memory alloy material spring, this spring near inlet wire seat arrange, above spring, be provided with insulating heat-conductive sheet, this insulating heat-conductive sheet can overhead below two blades of plug-in strip; Traditional fuse failure protection is replaced owing to have employed copper-based memory alloy material spring; realize open-type load switch cut-offfing when line fault; improve the rapidity of open-type load switch, reliability, fail safe, because it can be reused, so the life-span is long.

Description

A kind of open-type load switch
Technical field
The utility model relates to low tension switch field, espespecially open-type load switch.
Background technology
Current open-type load switch all adopts fuse as protection, and when short circuit or other faults cause electric current excessive, fuse temperature rises; when temperature is increased to the fusing point of fuse, fuse failure, open circuit; insulating power supply, thus the destruction that protection electric equipment causes from fault.Adopt fuse to have these points shortcoming: 1, fuse is as more easily fused, the curent change (this curent change can not affect electric equipment) that circuit is slightly larger then fuse disconnection electric equipment cannot work; 2, not easily disconnect or react slow, then lower to electrically establishing the protection reliability omitted as fuse is arranged; 3, the fuse after fusing can not reuse, and causes the wasting of resources; 4, produce floating aerial metal ion after fuse failure inflammable, produce electric arc, the contact of switch may be burnt; 5, also manually will change fuse after fuse failure, user needs to prepare fuse, changes in the process of fuse, and misoperation or layman change the accident that may cause harm personal safety.
Utility model content
The utility model is a kind of replace traditional fuse failure protection fast, reliable and can reusable open-type load switch.
For reaching above-mentioned purpose, a kind of open-type load switch of the utility model, porcelain seat is provided with inlet wire seat and wire outlet seat, wire outlet seat is provided with plug-in strip, two blades of plug-in strip are mobilizable to be fastened on inlet wire seat, and wherein on porcelain seat, two blade standing beneath of plug-in strip arrange at least one memory alloy material spring, and this spring is arranged near inlet wire seat, above spring, be provided with insulating heat-conductive sheet, this insulating heat-conductive sheet can overhead below two blades of plug-in strip.
Two blades of plug-in strip are respectively equipped with a breach, insulating heat-conductive sheet can be arranged in this breach, when the size of the sectional area of this breach should meet when short circuit in line or have excessive electric current to flow through, the temperature of its disconnecting link rises and can reach the phase transition temperature of copper-based memory alloy material spring.
Fuse is substituted owing to have employed copper-based memory alloy material spring; the variations in temperature sensitiveness of memory alloy spring and auto-action feasibility; replace traditional fuse failure protection; realize open-type load switch cut-offfing when line fault; improve the rapidity of open-type load switch, reliability, fail safe; because it can be reused, so the life-span is long.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model switch structural representation when closing;
Structural representation when Fig. 3 is the disconnection of the utility model switch.
Label declaration:
1, wire outlet seat; 2, plug-in strip; 21, blade; 211, breach; 3, inlet wire seat; 4, porcelain seat; 5, memory alloy spring; 6, heat conductive insulating elastic caoutchouc.
Embodiment
By describing technology contents of the present utility model, structural feature in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with execution mode.
Refer to Fig. 1, Fig. 2 and Fig. 3, the utility model is made up of wire outlet seat 1, plug-in strip 2, blade 21, breach 211, inlet wire seat 3, porcelain seat 4, memory alloy spring 5, heat conductive insulating elastic caoutchouc 6.Wire outlet seat 1 and inlet wire seat 3 are located on porcelain seat 4, plug-in strip 2 is movably articulated on outlet core print seat 1, two blades 21 of plug-in strip 2 can snap fit onto inlet wire seat 3 on when running downwards, porcelain seat 4 is positioned at below in the middle of two blades 21 and is provided with a memory alloy spring 5, operate for ease of memory alloy spring 5, memory alloy spring 5 is arranged on the side near inlet wire seat 3, and such arm of force is larger.Be provided with heat conductive insulating elastic caoutchouc 6, two blade 21 in memory alloy spring 5 upper end and be respectively equipped with breach 211, when the 2-in-1 lock of plug-in strip snaps fit onto on heat conductive insulating elastic caoutchouc 6 to breach 211 during inlet wire seat 3 with heat conductive insulating elastic caoutchouc 6 correspondence position.In this case, this memory alloy spring 5 adopts copper base, and the cost of copper-based memory alloy material is low, short to the thermotonus time, has temperature sensitivity and auto-action feasibility two kinds of functions simultaneously.Memory alloy spring 5 also can adopt two and set up side by side.Heat conductive insulating elastic caoutchouc 6 adopts the ceramic particles such as silicon rubber base material, boron nitride, aluminium oxide to be filler, heat-conducting effect is very good, under equal conditions, thermal impedance is less than other Heat Conduction Material, there is the feature of softness, clean, pollution-free and "dead", high-insulativity, and there is good mechanical performance.
As shown in Figure 2, when circuit is in normal operation state, knife switch is in closure state, and memory alloy spring 5 shrinks under blade 21 pressure.As shown in Figure 3, when circuit breaks down, short time current increases rapidly, electric current flows through blade 21, blade breach 211 place temperature is raised rapidly, because heat conductive insulating rubber 6 has good thermal conductivity, copper-based memory alloy spring 5 heat conduction can be rapidly to, the temperature of copper-based memory alloy spring 5 perception is raised fast, because copper-based memory alloy spring has temperature sensitivity, when reaching phase transition temperature point, memory alloy spring rapid expanding, upwards pushing up heat conductive insulating rubber 6 makes the blade 21 of open-type load switch depart from tool rest fast, circuit disconnects, make electric equipment and isolated from power, thus protection electric equipment is from the destruction of faulty circuit.After circuit disconnects, electric current is zero, and the temperature of memory alloy spring 5 reduces gradually, and memory alloy spring 5 restores to the original state, spring contraction.As needed closed circuit, closing by hand can be carried out after processing line fault.Because memory alloy spring has the restore funcitons of more than 1,000,000 times, therefore long service life, both improve switch life, turn avoid the artificial trouble changing fuse.
The utility model has following advantage:
1, according to the different rated current flowing through open-type load switch, the sectional area of its blade indentation, there of reasonable set, when ensureing circuit short circuit current flow or excessive electric current, its temperature can rise fast; When flowing through running current, temperature can not reach the phase transition temperature of copper-based memory alloy spring.
2, basis flows through the different rated current that open type meets switch, the phase point temperature of appropriate design memory alloy spring and the expansive force of memory alloy spring, open-type load switch misoperation when can effectively avoid flowing through large running current, open-type load switch refused action when flowing through little short circuit current.
3, heat conductive insulating elastic caoutchouc adopts the ceramic particles such as silicon rubber base material, boron nitride, aluminium oxide to be filler, and heat-conducting effect is very good.Under equal conditions, thermal impedance is less than other Heat Conduction Material.There is the feature of softness, clean, pollution-free and "dead", high-insulativity, and there is good mechanical performance.Live wire and the mutual short circuit of zero line can be avoided on the one hand; On the other hand, when there is line fault, two plug-in strip blades can disconnect simultaneously.
The utility model blade adopts the object one of breach design to be engaging location; another object is that blade diminishes in indentation, there; resistance becomes large; heat up than very fast when big current leads to; reaction time shortens; this place blade also can adopt other form designs to reach object, should fall into protection range of the present utility model.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent shapes or Structural Transformation; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims (2)

1. an open-type load switch, porcelain seat is provided with inlet wire seat and wire outlet seat, wire outlet seat is provided with plug-in strip, two blades of plug-in strip are mobilizable to be fastened on inlet wire seat, it is characterized in that: on porcelain seat, two blade standing beneath of plug-in strip arrange at least one memory alloy material spring, this spring near inlet wire seat arrange, above spring, be provided with insulating heat-conductive sheet, this insulating heat-conductive sheet can overhead below two blades of disconnecting link.
2. a kind of open-type load switch as claimed in claim 1, it is characterized in that: two blades of disconnecting link are respectively equipped with a breach, insulating heat-conductive sheet can be arranged in this breach, when the size of the sectional area of this breach should meet when short circuit in line or have excessive electric current to flow through, the temperature of its disconnecting link rises and can reach the phase transition temperature of copper-based memory alloy material spring.
CN201420411733.XU 2014-07-24 2014-07-24 A kind of open-type load switch Expired - Fee Related CN204117924U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420411733.XU CN204117924U (en) 2014-07-24 2014-07-24 A kind of open-type load switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420411733.XU CN204117924U (en) 2014-07-24 2014-07-24 A kind of open-type load switch

Publications (1)

Publication Number Publication Date
CN204117924U true CN204117924U (en) 2015-01-21

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ID=52335212

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420411733.XU Expired - Fee Related CN204117924U (en) 2014-07-24 2014-07-24 A kind of open-type load switch

Country Status (1)

Country Link
CN (1) CN204117924U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109148200A (en) * 2018-08-14 2019-01-04 邹平县供电公司 A kind of knife switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109148200A (en) * 2018-08-14 2019-01-04 邹平县供电公司 A kind of knife switch

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150121

Termination date: 20190724

CF01 Termination of patent right due to non-payment of annual fee