CN205723356U - Relay - Google Patents

Abstract

The utility model discloses a kind of relay, including: casing, casing is provided with two stationary contacts of mutually insulated；Base plate, base plate is provided with two contact sites corresponding with two stationary contacts and two contact sites are spaced with insulation, cavity it is formed with in base plate, it is provided with electric fuse in cavity and electric fuse is connected with two contact sites respectively and makes two contact sites electrical connections, base plate is movably arranged in casing between conduction position and open position, base plate two contact sites and two stationary contacts when conduction position dock respectively and are used for making two stationary contact conductings, and base plate two contact sites and two stationary contacts when open position separate and make two stationary contacts mutually disconnect；Driving means.According to the relay of this utility model embodiment, electric fuse achieves the effect of overload protection and short-circuit protection, to improve the safety of the Circuits System with this relay, it is to avoid due to the fire etc. that stream or short circuit cause excessively.

Description

Relay

Technical field

This utility model relates to technical field of electrical equipment, particularly to a kind of relay.

Background technology

In use, it is possible that the problem of short circuit, and during the use of relay, short circuit may for electrical equipment Load current can be caused excessive or the problem such as circuit sintering, so that product loss of function, cause the fault of use.

Utility model content

One of technical problem that this utility model is intended to solve in correlation technique the most to a certain extent.To this end, this reality It is to propose a kind of relay by a novel purpose, reduces or avoid owing to load current is too high or short circuit may The potential safety hazard caused.

According to the relay of this utility model embodiment, including casing, described casing be provided with mutually insulated two are quiet Contact；Base plate, described base plate includes electric fuse installation portion and is arranged on two contact sites at electric fuse installation portion two ends, described two Individual contact site is corresponding with two stationary contacts, is formed with cavity, is provided with electric fuse in described cavity in described electric fuse installation portion, and two Individual contact site is conducted by described electric fuse, and described base plate is movably arranged at described between conduction position and open position In casing, described base plate when described conduction position two described contact sites and the contact of two described stationary contacts so that two stationary contacts Point conducts, and described base plate two described contact sites and two described stationary contacts when described open position separate and make described in two Stationary contact disconnects and conducting；Driving means, described driving means is connected with described base plate to drive described base plate in described conducting Move between position and described open position.

According to the relay of this utility model embodiment, electric fuse achieves the effect of overload protection and short-circuit protection, To improve the safety of the Circuits System with this relay, it is to avoid due to the fire etc. that stream or short circuit cause excessively.Meanwhile, will protect Danger silk is sealed in the cavity in above-mentioned electric fuse installation portion, beneficially arc extinguishing and improve safety further.

It addition, according to the relay of this utility model above-described embodiment, it is also possible to have a following additional technical characteristic:

Preferably, said two contact site is two movable contacts being arranged on electric fuse installation portion two ends upper surface.

Preferably, described electric fuse installation portion is insulator.

In embodiments more of the present utility model, in described electric fuse installation portion, it is formed with the cavity of both ends open, two Individual described contact site is located at the two ends of described electric fuse installation portion, and two described contact sites close described electric fuse installation portion Two ends, in described electric fuse is located at described electric fuse installation portion and are connected with two described contact sites respectively, two described contacts Portion by described electric fuse installation portion electric isolution and is conducted by described electric fuse.

Preferably, described contact site is provided with movable contact.

Advantageously, described electric fuse installation portion is the ceramic cavity of hollow.

Advantageously, a part outwardly formation first step of the end face of described electric fuse installation portion, and described contact Being formed with the second step complementary with the first step on the end face of described electric fuse installation portion in portion, described contact site is with described Electric fuse installation portion shape complementarity also mutually fastens.

Preferably, the upper surface of described contact site is higher than the upper surface of described electric fuse installation portion.

Further, described contact site is welded to connect with described electric fuse installation portion.

Advantageously, described electric fuse installation portion connecting portion is arranged below, described driving means is connected with described connecting portion.

Advantageously, described connecting portion is the inverted trapezoidal that two ends are connected with described electric fuse installation portion and middle subordinate is convex, described The middle part of connecting portion separates with described electric fuse installation portion, and described driving means is connected with the middle part of described connecting portion.

Further, described driving means includes: catch bar, the upper end of described catch bar be connected with described connecting portion and under End extends downwardly from described casing, and there are jump ring and pad, described jump ring in the upper end of described catch bar through described connecting portion connection Being stuck on described catch bar, described pad is between described jump ring and described connecting portion；Buffer spring, described buffer spring set In the outside of described catch bar, the upper end of described buffer spring is against on described connecting portion, and the lower end of described buffer spring is supported On the diapire of described catch bar or described casing.

In embodiments more of the present utility model, described base plate is provided with note sand hole, and described base plate be provided with for Close or open the closure member of described note sand hole, and be filled with quartz sand in the cavity of described base plate.

In embodiments more of the present utility model, described casing includes: ceramic shell, and the bottom of described ceramic shell opens Open；Supporting plate, described supporting plate is located at below described ceramic shell to close bottom described ceramic shell；Connected unit, described connected unit It is connected with described ceramic shell and described supporting plate respectively.

In embodiments more of the present utility model, in described casing, it is filled with hydrogen or helium.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the relay of one embodiment of this utility model, and wherein base plate is positioned at open position.

Fig. 2 is the schematic diagram that in the relay in Fig. 1, base plate is positioned at conduction position.

Fig. 3 is the decomposing schematic representation of the subelement of Fig. 1 repeat circuit.

Fig. 4 is the decomposing schematic representation of the base plate of Fig. 1 repeat circuit, electric fuse.

Fig. 5 is the sectional view after the base plate of Fig. 4 repeat circuit, electric fuse assembling.

Reference:

Relay 100,

Casing 1, stationary contact 11, ceramic shell 101, supporting plate 102, connected unit 103,

Base plate 2, contact site 21, electric fuse installation portion 22, first step 221, connecting portion 222, second step 211, cavity 201, note sand hole 202,

Electric fuse 3,

Driving means 4, sleeve 41, limited post 42, iron core 43, catch bar 44, back-moving spring 45, buffer spring 47, jump ring 48, packing ring 49.

Detailed description of the invention

Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, the most ad initio Represent same or similar element to same or similar label eventually or there is the element of same or like function.Below by ginseng It is exemplary for examining the embodiment that accompanying drawing describes, it is intended to be used for explaining this utility model, and it is not intended that to this utility model Restriction.

In the relay of correlation technique, owing to there is no overload protection arrangement, when relay adhesive, once load current mistake Big or circuit is short-circuited and is easily caused sintering, makes product loss of function, causes danger.It addition, above-mentioned technology does not has arc extinguishing Device, the arc time is long, and product is short for service life.In order to solve the most to a certain extent technical problem in correlation technique it One, present applicant proposes a kind of relay, safety and stability is higher.

In conjunction with Fig. 1 and Fig. 2, according to the relay 100 of one embodiment of this utility model, including: casing 1, base plate 2 and Driving means 4.

Specifically, casing 1 is provided with two stationary contacts 11 of mutually insulated.Base plate 2 is at conduction position and open position Between be movably arranged in casing 1.As in figure 2 it is shown, base plate 2 is connected with two stationary contacts 11 respectively at conduction position makes two Stationary contact 11 mutual conduction；Such as Fig. 1, base plate 2 separates make two stationary contacts 11 the most disconnected at open position and two stationary contacts 11 Open.

Driving means 4 is connected with base plate 2 to drive base plate 2 to move between conduction position and open position.

Base plate 2 is provided with two contact sites 21 corresponding with two stationary contacts 11, and two contact sites 21 are spaced from each other And insulate, be formed with cavity 201 in base plate 2, in cavity 201, be provided with electric fuse 3, electric fuse 3 respectively with two contact site 21 phases Even, the electrical connection between two contact sites 21 is realized by electric fuse 3.Wherein, when base plate 2 is positioned at conduction position, two contacts Portion 21 contacts accordingly with two stationary contacts 11 so that two stationary contacts 11 electrically connect, say, that by electric fuse 3 by two Contact site 21 electrically connects, owing to two contact sites 21 are correspondingly connected with two stationary contacts 11, and can be by electric fuse 3 by two Stationary contact 11 electrically connects；When base plate 2 is positioned at open position, two contact sites 21 separate with two stationary contacts 11, then two stationary contacts Point 11 disconnection.

Such as Fig. 5, in embodiments more of the present utility model, described base plate 2 includes electric fuse installation portion 22 and is arranged on Two contact sites 21 at electric fuse installation portion 22 two ends, said two contact site 21 is corresponding with two stationary contacts 11, described insurance Being formed with cavity 201 in silk installation portion 22, be provided with electric fuse 3 in described cavity 201, two contact sites 21 are by described electric fuse 3 conduct, and described base plate 2 is movably arranged in described casing 1 between conduction position and open position, and described base plate 2 exists During described conduction position, two described contact sites 21 contact with two described stationary contacts 11 so that two stationary contacts 11 conduct, institute State base plate 2 two described contact sites 21 when described open position to separate with two described stationary contacts 11 and make two described stationary contacts 11 disconnections conduct.

In some preferred embodiments, said two contact site 21 is be arranged on electric fuse installation portion 22 two ends upper surface two Individual movable contact.I.e. two contact sites 21 are arranged on the upper surface of electric fuse installation portion 22, and not at the two of electric fuse installation portion 22 The left and right directions of end adds other contact sites 21 again, directly using the movable contact that is arranged on electric fuse installation portion 22 as contact site 21。

Further, in order to preferably realize the insulation between contact site 21, can directly by electric fuse installation portion 22 by absolutely Edge system becomes.

During the use of relay 100, during if there is the problem such as current overload or short circuit, electric fuse 3 disconnects, from And make the electrical connection between two stationary contacts 11 disconnect, make relay 100 be off, thus disconnecting circuit.

Relay 100 according to this utility model embodiment, owing to being provided with electric fuse 3 in base plate 2, passes through electric fuse 3 effects achieving overload protection and short-circuit protection, to improve the safety of the Circuits System with this relay 100, keep away Exempt from the fire etc. owing to stream or short circuit cause excessively.

This utility model uses electric fuse 3 to carry out overload protection, effectively avoids that load current is too high or short circuit The danger caused.

Electric fuse 3 is integrated in base plate 2 by the application, facilitates replacing and the maintenance of relay 100 of electric fuse 3, It is easy to relay 100 and there is the operation and maintenance of Circuits System of this relay 100.

In conjunction with Fig. 4 and Fig. 5, in embodiments more of the present utility model, in electric fuse installation portion 22, form both ends open Cavity, two contact sites 21 are located at the two ends of electric fuse installation portion 22, and two contact sites 21 close electric fuse installation portion 22 Two ends, in electric fuse 3 is located at electric fuse installation portion 22 and be connected with two contact sites 21 respectively, two contact sites 21 pass through guarantor Danger silk installation portion 22 separates, and two contact sites 21 are electrically insulated by electric fuse installation portion 22, passes through realizing two contact sites 21 Electric fuse installation portion 22 realizes insulation, and the two ends of electric fuse 3 are connected with two contact sites 21 respectively, realize two by electric fuse 3 Conducting between individual contact site 21.

It is to say, realize conducting by electric fuse 3 between two contact sites 21；Further, after electric fuse 3 fuses, Just can disconnect conducting between two contact sites 21.

Owing to two described contact sites 21 are installed on electric fuse installation portion 22, and between two contact sites 21 the most absolutely Edge, therefore, it can at electric fuse installation portion 22 surface-coated insulating barrier；Can also contact site 21 and electric fuse installation portion 22 it Between insulating part is set.

Preferably, can be arranged to be made up of insulant by electric fuse installation portion 22, for example, it is possible to installed by electric fuse Portion 22 is arranged to the ceramic cavity of hollow.

Further, with reference to Fig. 3 and Fig. 4, electric fuse installation portion 22 is arranged to the hollow cavity of both ends open, by contact site 21 two ends being arranged on electric fuse installation portion 22, and the two ends of electric fuse installation portion 22 are closed by contact site 21, it addition, insurance It is internal that silk 3 may be mounted at electric fuse installation portion 22, due to the both ends open of electric fuse installation portion 22 and is closed by contact site 21, Therefore, it can facilitate electric fuse to connect two contact sites 21.

Two contact sites 21 close off the two ends of electric fuse installation portion 22, to limit one in electric fuse installation portion 22 The chamber of individual closing.Accommodate electric fuse 3 in electric fuse installation portion 22, thus electric fuse 3 is played certain protective effect, in insurance During silk 3 fusing, it is to avoid the electric fuse 3 of fusing is scattered generation potential safety hazard, thus improves the security performance of relay 100.

It addition, in a preferred embodiment of the present utility model, stationary contact docks with contact site for convenience, at two Movable contact (not shown) it is provided with at least one in contact site.

In conjunction with Fig. 4 and Fig. 5, a part outwardly formation first step 221 of electric fuse installation portion 22 end face, contact site It is formed on 21 and the second step 211 of first step 221 complementation on electric fuse installation portion 22 end face, contact site 21 and insurance Silk installation portion 22 shape complementarity mutually fastening, when being arranged on electric fuse installation portion 22 by contact site 21, can pass through the The cooperation of one step 221 and second step 211 realizes the location of contact site 21, to facilitate, contact site 21 is arranged on electric fuse peace In dress portion 22, improve installation effectiveness and the stability of contact site 21.

It should be noted that two surface complementarities refer to: when two surfaces fit to together, a surface is provided with convex Rise, be then arranged in correspondence with breach on another one surface.In addition, it is necessary to explanation, electric fuse installation portion 22 is provided with First step 221, then be formed with the first breach, contact site 21 be formed second step 211, then connect on electric fuse installation portion 22 Being formed with the second breach in contact portion 21, this is to should be, in one plane, if there is bulge-structure, then the most convex in plane The position risen will necessarily form a structure relative to projection depression.

Specifically, contact site 21 and electric fuse installation portion 22 shape complementarity, refer to: on the end face of electric fuse installation portion 22 Being provided with first step 221, the place that the end face of contact site 21 coordinates with first step 221 is provided with the first breach, and first Step 221 is identical with the shape of the first breach；Second step 211, electric fuse installation portion 22 it is formed with on the end face of contact site 21 End face on the place that coordinates with second step 211 be provided with the second breach.When assembling, first step 221 coordinates first In breach, second step 211 coordinates in the second breach, so that electric fuse installation portion 22 end face and contact site 21 One end end face fit to together, it is achieved first step 221 and the fastening of the first breach.

Further, with reference to Fig. 5, the upper surface of contact site 21 is higher than the upper surface of electric fuse installation portion 22, base plate 2 When conduction position, owing to the upper surface of contact site 21 is higher than the upper surface of electric fuse installation portion 22, therefore can be so that contacting Portion 21 docks with stationary contact 11, so that contact site 21 stably docks with stationary contact 11, improves the stability of relay.

Preferably, contact site 21 welds with electric fuse installation portion 22 so that between contact site 21 and electric fuse installation portion 22 Stable connection, the intensity of connection is high, thus improves the stability of relay.

Furthermore it is possible to arrange metal level at the two ends of electric fuse installation portion 22, contact site 21 is arranged on electric fuse and installs Time in portion 22, what contact site 21 can be stable with electric fuse installation portion 22 welds.

In order to improve the arc quenching effect of relay 100 further, this utility model is filled with stone in the cavity of base plate 2 Sand (not shown).By quartz sand arc extinguishing, it is to avoid owing to producing the potential safety hazard that electric arc causes, decrease electric fuse 3 and melt Time disconnected, the impact causing product safety is not opened in arcing.

Advantageously, with reference to Fig. 4, base plate 2 is additionally provided with note sand hole 202 and closure member (not shown), by closing Part can close or open note sand hole 202, and fills by quartz sand in the cavity of base plate 2.

Of the present utility model and in some embodiments, relay 100 also includes circumferentially arranged Magnet (not shown). The effect of arc extinguishing can be played by Magnet.

In embodiments more of the present utility model, referring to figs. 1 through Fig. 5, electric fuse installation portion 22 connection is arranged below Portion 222, driving means 4 is connected with connecting portion.

Further, such as Fig. 5 and combine Fig. 1, connecting portion 222 be connected with aforesaid electric fuse installation portion 22 in two ends and in The inverted trapezoidal that subordinate is convex, the middle part of connecting portion 222 separates with electric fuse installation portion 22, in driving means 4 and described connecting portion Portion is connected.Driving means 4 is connected so that the simple in construction of relay by arranging connecting portion 22, the making of convenience relay, subtract Few Production Time.

It addition, combine Fig. 1 and Fig. 3, driving means 4 includes catch bar 44 and buffer spring 47, the upper end of catch bar 44 with Connecting portion 222 is connected and lower end extends downwardly from casing 1, and there is jump ring 48 He the upper end of catch bar 44 through connecting portion 222 connection Pad 49, jump ring 48 is stuck on catch bar 44, and pad 49 is between jump ring 48 and connecting portion 222.Buffer spring 47 is enclosed within and pushes away The outside of lever 44, the upper end of buffer spring 47 is against on connecting portion 222, and the lower end of buffer spring 47 be against catch bar 44 or On the diapire of casing 1.Cooperation by buffer spring 47 and jump ring 48 etc., it is achieved the buffering of base plate 2, in the adhesive of relay During disconnecting, the rigid contact in portion 21 and stationary contact 11 can be avoided contact with by buffering, improve the stability of relay, And reduce the noise of relay.

Further, such as Fig. 1, driving means 4 is connected to bottom casing 1, and driving means 4 includes: sleeve 41, limited post 42, iron core 43 and back-moving spring 45.

Specifically, sleeve 41 upper end is connected with casing 1, limited post 42 be located at the top in sleeve 41 and with casing 1 phase Even, iron core 43 is located at the bottom in sleeve 41 and vertically may move, and one end of catch bar 44 is connected and the other end with iron core 43 Being connected with base plate 2, back-moving spring 45 is enclosed within outside catch bar 44 and two ends compress iron core 43 and limited post 42 respectively.Thus, easily In being realized the control to relay 100 break-make by pushing mechanism, such that it is able to improve making of relay 100 to a certain extent Use performance.

Wherein, in the example of fig. 1 and 2, the lower end of back-moving spring 45 compresses iron core 43, and the upper end of back-moving spring 45 Compress limited post 42.Thus, under the effect of back-moving spring 45 so that the action of pushing mechanism more steadily and be easily achieved right The control of relay 100 break-make.

In conjunction with Fig. 1 to Fig. 3, in embodiments more of the present utility model, base plate 2 is provided with via (not shown), promotes The upper end (such as, the upper end of catch bar 44 in Fig. 1) of bar 44 can pass via, and catch bar 44 is provided with card through the end of via Spring 48 and packing ring 49, packing ring 49 can reduce the stress of jump ring 48 and can prevent jump ring 48 from coming off, so can improve further The job stability of relay 100.The outside of catch bar 44 is provided with buffer spring 47, and buffer spring 47 may be used for often promoting Lever 44 makes base plate 2 compress jump ring 48.Thus, the action that can make catch bar 44 is milder, it is also possible to improve relay 100 Action accuracy.

Wherein, one end of buffer spring 47 is connected with base plate 2, and the other end of buffer spring 47 and catch bar 44 and shell In one be connected.

It is to say, combine Fig. 1 and Fig. 2, one end of buffer spring 47 is connected with base plate 2 (such as, buffer spring in Fig. 1 The upper end of 47), the other end (such as, the lower end of buffer spring 47 in Fig. 1) of buffer spring 47 is connected with catch bar 44；Can also It is that one end of buffer spring 47 is connected with base plate 2 (such as, the upper end of buffer spring 47 in Fig. 1), the other end of buffer spring 47 (such as, the lower end of buffer spring 47 in Fig. 1) is connected with the diapire of casing 1；Certainly can also is that the upper end of buffer spring 47 even Picking shell 1 and lower end connecting bottom board 2, now buffer spring should often be in the state of stretching.So can improve relay 100 Operation stability, preferably meet the demand of user.

Such as Fig. 1, in embodiments more of the present utility model, casing 1 includes: ceramic shell 101, supporting plate 102, connected unit 103.Wherein, the bottom-open of ceramic shell 101, supporting plate 102 is located at ceramic shell 101 below to close ceramic shell 101 end Portion, connected unit 103 is connected with ceramic shell 101 and supporting plate 102 respectively.By ceramic shell 101 and the cooperation of supporting plate 102, with Avoid grieshoch etc. to enter in casing 1, Electrical Safety can be improved simultaneously.And casing 1 is decomposed into ceramic shell 101, torr Plate 102 and connected unit 103, can facilitate the installation of the element such as base plate 2, driving means 4.

Preferably, connected unit 103 is located between ceramic shell 101 and supporting plate 102, and connected unit 103 is in along ceramic shell The circumferentially extending annular of 101, connected unit 103 is connected with ceramic shell 101 and supporting plate 102 respectively, will pottery by connected unit 103 Porcelain housing 101 and supporting plate 102 link together, and by connected unit 103 realize between ceramic shell 101 and supporting plate 102 close Envelope.

Preferably due to pottery has preferably intensity, high chemical stability and a heat stability, but also be electricity not Good conductor.Therefore, this utility model arranges ceramic shell 101.Improve the insulating properties of casing 1, to reduce potential safety hazard. And realize good arc quenching effect by ceramic shell 101.

Certainly, in other embodiments of this utility model, casing 1 can be other isolation material, this utility model pair The concrete material of casing 1 is not construed as limiting, and is adapted to select in actual application.

Further, it is filled with hydrogen or helium in casing 1.By hydrogen and helium, arc extinguishing gases layer can be formed, In relay 100 switching process, by hydrogen and helium arc extinguishing rapidly, reduce potential safety hazard.

In the confined space of full hydrogen or nitrogen, when electric fuse 3 normally works generation electric arc, in the magnetic field of Magnet Under effect, being elongated by electric arc, now by arc-chute by the electric arc section of being divided into, the cooling at gas (hydrogen or nitrogen) simultaneously is made Under with, fast arc extinction can be realized, such that it is able to improve the safety in utilization of relay 100 further.

As shown in Figures 1 to 5, according to the relay with short-circuit protection function of one specific embodiment of this utility model 100, the overcurrent protection of existing circuit, it is capable of again the function of chopper.Wherein short-circuit protection structure by contact site 21, Pottery chamber (i.e. electric fuse installation portion 22), three part compositions of electric fuse.As it is shown in figure 1, pottery chamber is by contact site 21 and promotion Bar 44 realizes high-low pressure isolation, and electric fuse plays the effect of overload protection, and packing ring can reduce the stress of jump ring, prevents it from taking off Fall.

As shown in Figure 1: first electric fuse is placed in pottery intracavity, then contact site 21 is installed with the step on pottery chamber, Welded, note quartz sand in pottery lumen pore, lock with set screw.Then catch bar is assembled buffer spring through pottery The installing hole in chamber, finally assembles packing ring, then fixes with jump ring.

As it is shown in figure 1, be encased in pushing mechanism after being assembled into assembly, catch bar loads onto supporting plate 102, limited post successively 42, back-moving spring 45, iron core 43 mode of laser welding or screw thread is fixed with catch bar.These mechanism's release conditions such as Fig. 1, After relay pushing mechanism starts working adhesive, contact site 21 contacts with stationary contact 11, loads by electric fuse, when load electricity Flow through height or time circuit is short-circuited, blown fuse, function well as protective effect.The arc extinguishing that relay 100 is external simultaneously Under the effect of the triple arc extinguishing of Magnet, the cooled hydrogen in cavity and the quartz sand in ceramic ring, it is possible to arc extinguishing rapidly, effectively increase The long products life-span.It addition, under attracting state, catch bar is isolated by pottery chamber with high-voltage load end, and then is insulated by high-low pressure, Avoid the damage of low-pressure end components and parts and the generation of punch-through, thus improve quality and the safety of product.

This utility model uses electric fuse 3 to carry out overload protection, effectively avoids that load current is too high or short circuit The danger caused.The blowout magnet that relay 100 is external simultaneously, the cooled hydrogen in cavity and the quartz sand in ceramic ring three Under the effect of weight arc extinguishing, decrease electric fuse 3 arcing that fuses and do not open the impact that product safety is caused, two groups of insurance stationary contacts 11 Act on simultaneously, and then improve the accuracy of the fusing of product and the safety of use.Comparatively speaking, this utility model will be protected Danger silk 3 combines with relay 100, has saved overall use space and cost, has been used by the arc-extinguishing mechanism of relay 100 Can the effectively quality of improving product and safety on electric fuse 3.

This utility model uses electric fuse to carry out overload protection, if having the protective measure of other forms also at this patent model In enclosing；The base plate 2 that this utility model is used is ceramic material, if there being other nonmetallic materials can fix contact equally Portion 21 is also in the range of this patent.

In description of the present utility model, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length ", " width Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward ", " suitable Hour hands ", " counterclockwise ", " axially ", " radially ", the orientation of the instruction such as " circumferential " or position relationship be based on orientation shown in the drawings Or position relationship, be for only for ease of describe this utility model and simplify describe rather than instruction or hint indication device or Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the present utility model System.

Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or Implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, such as two Individual, three etc., unless otherwise expressly limited specifically.

In this utility model, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " Gu Fixed " etc. term should be interpreted broadly, connect for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be It is mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two The connection of element internal or the interaction relationship of two elements, unless otherwise clear and definite restriction.Common skill for this area For art personnel, above-mentioned term concrete meaning in this utility model can be understood as the case may be.

In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score Can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, first is special Levy second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " permissible Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.

In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy Point is contained at least one embodiment of the present utility model or example.In this manual, the schematic table to above-mentioned term State and be necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature are permissible One or more embodiment in office or example combine in an appropriate manner.Additionally, in the case of the most conflicting, this area Technical staff the feature of the different embodiments described in this specification or example and different embodiment or example can be entered Row combines and combination.

Although above it has been shown and described that embodiment of the present utility model, it is to be understood that above-described embodiment is Exemplary, it is impossible to it is interpreted as that those of ordinary skill in the art is in scope of the present utility model to restriction of the present utility model In above-described embodiment can be changed, revise, replace and modification.

Claims (15)

1. a relay, it is characterised in that including:

Casing, described casing is provided with two stationary contacts of mutually insulated；

Base plate, described base plate includes electric fuse installation portion and is arranged on two contact sites at electric fuse installation portion two ends, described two Individual contact site is corresponding with two stationary contacts, is formed with cavity, is provided with electric fuse in described cavity in described electric fuse installation portion, and two Individual contact site is conducted by described electric fuse, and described base plate is movably arranged at described between conduction position and open position In casing, described base plate when described conduction position two described contact sites and the contact of two described stationary contacts so that two stationary contacts Point conducts, and described base plate two described contact sites and two described stationary contacts when described open position separate and make described in two Stationary contact disconnects and conducting；

Driving means, described driving means is connected with described base plate to drive described base plate in described conduction position and described disconnection Move between position.

Relay the most according to claim 1, it is characterised in that said two contact site is for being arranged on electric fuse installation portion Two movable contacts of two ends upper surface.

Relay the most according to claim 1, it is characterised in that described electric fuse installation portion is insulator.

Relay the most according to claim 1, it is characterised in that be formed with both ends open in described electric fuse installation portion Cavity, two described contact sites are located at the two ends of described electric fuse installation portion, and two described contact sites close described electric fuse The two ends of installation portion, in described electric fuse is located at described electric fuse installation portion and are connected with two described contact sites respectively, two Described contact site by described electric fuse installation portion electric isolution and is conducted by described electric fuse.

Relay the most according to claim 4, it is characterised in that be provided with movable contact on described contact site.

Relay the most according to claim 4, it is characterised in that described electric fuse installation portion is the ceramic cavity of hollow.

Relay the most according to claim 4 a, it is characterised in that part for the end face of described electric fuse installation portion is outside Protrude and form the first step complementation being formed with on first step, and described contact site with on the end face of described electric fuse installation portion Second step, described contact site and described electric fuse installation portion shape complementarity also mutually fasten.

8. according to the relay according to any one of claim 4-7, it is characterised in that the upper surface of described contact site is higher than institute State the upper surface of electric fuse installation portion.

9. according to the relay according to any one of claim 4-7, it is characterised in that described contact site is pacified with described electric fuse Dress portion is welded to connect.

Relay the most according to claim 4, it is characterised in that described electric fuse installation portion connecting portion is arranged below, Described driving means is connected with described connecting portion.

11. relays according to claim 10, it is characterised in that described connecting portion is that two ends are installed with described electric fuse The inverted trapezoidal that portion is connected and middle subordinate is convex, the middle part of described connecting portion separates with described electric fuse installation portion, described driving means It is connected with the middle part of described connecting portion.

12. relays according to claim 11, it is characterised in that described driving means includes:

Catch bar, the upper end of described catch bar is connected with described connecting portion and lower end extends downwardly from described casing, described catch bar Upper end through described connecting portion and connection have jump ring and pad, described jump ring to be stuck on described catch bar, described pad is positioned at Between described jump ring and described connecting portion；

Buffer spring, described buffer spring is enclosed within the outside of described catch bar, and the upper end of described buffer spring is against described connection In portion, and the lower end of described buffer spring is against on the diapire of described catch bar or described casing.

13. relays according to claim 1, it is characterised in that described base plate is provided with on note sand hole, and described base plate It is provided with the closure member for closing or open described note sand hole, and is filled with quartz sand in the cavity of described base plate.

14. according to the relay according to any one of claim 1-7, it is characterised in that described casing includes:

Ceramic shell, the bottom-open of described ceramic shell；

Supporting plate, described supporting plate is located at below described ceramic shell to close bottom described ceramic shell；

Connected unit, described connected unit is connected with described ceramic shell and described supporting plate respectively.

15. relays according to claim 1, it is characterised in that be filled with hydrogen or helium in described casing.