CN205789564U - Relay - Google Patents

Abstract

The utility model discloses a kind of relay, including: casing, dynamic tactile bridge and driving means, casing is provided with the first stationary contact and second stationary contact of mutually insulated；The dynamic bridge that touches includes drive division, the first contact site, the second contact site and the first insulated cavity, first contact site is corresponding with the first stationary contact, second contact site is corresponding with the second stationary contact, the first electric fuse it is provided with in first insulated cavity, first contact site is electrically connected by the first electric fuse and drive division, second contact site electrically connects with drive division, and the first contact site, the second contact site, the first insulated cavity are concordant with the upper surface of drive division, and the first contact site and the second contact site are provided with movable contact.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 is likely to result in that load current is excessive or the problem such as circuit sintering to electrical equipment, so that product loss of function, causes the fault of use.

Meanwhile, in existing scheme, electric fuse or other overload protection arrangements are arranged in relay, when blown fuse, can produce phenomenon of arc discharge between the electric fuse of disconnection；Due to the existence of electric arc, electric fuse or overload protection arrangement can be caused to be disconnected timely so that during relay uses, still there is easily sintering, loss of function, the problem in minimizing life-span.Further, after electric fuse disconnects, if electric current is excessive；Even if the electric arc between electric fuse is controlled, but between two stationary contacts, also can there is certain phenomenon of arc discharge.

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, a purpose of the present utility model is to propose a kind of relay, reduces or avoid due to load current is too high or short circuit may cause potential safety hazard the arcing problem that solves between electric fuse arcing or stationary contact.

According to the relay of this utility model embodiment, including: casing, described casing is provided with the first stationary contact and second stationary contact of mutually insulated；Dynamic tactile bridge, the described dynamic bridge that touches includes drive division, first contact site, second contact site and the first insulated cavity, described first contact site is corresponding with described first stationary contact, described second contact site is corresponding with described second stationary contact, described first insulated cavity is arranged between described first contact site and described drive division, described first insulated cavity electrically insulates described first contact site and described drive division, it is provided with the first electric fuse in described first insulated cavity, described first contact site is electrically connected by described first electric fuse and described drive division, described second contact site electrically connects with described drive division；Described first contact site, the second contact site, the first insulated cavity are concordant with the upper surface of drive division, and described first contact site and the second contact site are provided with movable contact；The described dynamic bridge that touches is movably arranged in described casing between conduction position and open position, the described dynamic movable contact touched on bridge location first contact site described in when described conduction position contact with described first stationary contact and movable contact on described second contact site contacts with described second stationary contact and is used for making described first stationary contact conduct with described second stationary contact, and the described movable contact moved on tactile bridge location first contact site described in when described open position separates with described first stationary contact and the movable contact of described second contact site and the separation of the second stationary contact are so that described first stationary contact mutually disconnects with described second stationary contact conducts；Driving means, described driving means is connected to drive the described dynamic bridge that touches to move between described conduction position and described open position with the described dynamic bridge that touches.

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.Electric fuse in insulated cavity, during fusing, it is possible to well controls its phenomenon of arc discharge.

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

Advantageously, described first insulated cavity is the ceramic chamber of hollow, and one end of described first insulated cavity is closed by described drive division and the other end is closed by described first contact site.

Preferably, it is formed with the first breach on first end end face of described first insulated cavity, the end face of one end of described drive division is provided with the first outwardly boss, described first boss is corresponding with described first breach, the end face of the first end of described first insulated cavity and described drive division is provided with the shape complementarity of the end face of the first boss and mutually fastens.

Further, it is formed with the second breach on second end end face of described first insulated cavity, the end face of described first contact site is provided with outwardly and corresponding with described second breach the second boss, and the end face of the second end of described first insulated cavity and described first contact site are provided with the shape complementarity of the end face of the first boss and mutually fasten.

In embodiments more of the present utility model, described second contact site is joined directly together with described drive division and conducts.

In embodiments more of the present utility model, being provided with the second insulated cavity between described second contact site and described drive division, described second insulated cavity electrically insulates described second contact site and described drive division；Being provided with the second electric fuse in described second insulated cavity, described second contact site is electrically connected by described second electric fuse and described drive division.

Further, described second insulated cavity is the ceramic chamber of hollow, and one end of described second insulated cavity is closed by described drive division and the other end is closed by described second contact site.

Advantageously, it is formed with the 3rd breach on first end end face of described second insulated cavity, the end face of the other end of described drive division is provided with the 3rd outwardly boss, described 3rd boss is corresponding with described 3rd breach, the end face of the first end of described second insulated cavity and described drive division is provided with the shape complementarity of the end face of the 3rd boss and mutually fastens.

Preferably, it is formed with the 4th breach on second end end face of described second insulated cavity, the end face of described second contact site is provided with outwardly and corresponding with described 4th breach the 4th boss, and the end face of the second end of described second insulated cavity and described second contact site are provided with the shape complementarity of the end face of the 4th boss and mutually fasten.

Further, described first contact site and described second contact site are arranged symmetrically with about described drive division, and described first insulated cavity and described second insulated cavity are arranged symmetrically with about described drive division.

In embodiments more of the present utility model, in described first insulated cavity, it is filled with quartz sand.

Further, described first insulated cavity is provided with note sand hole, and described first insulated cavity is provided with the closure member for closing described note sand hole.

In embodiments more of the present utility model, 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.

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

In embodiments more of the present utility model, described driving means is connected to described bottom of shell, described driving means includes connecting rod, the upper end of described connecting rod is connected with the described dynamic bridge that touches, and the lower end of described connecting rod passes downwards described casing, wherein, the periphery of described small end is arranged with spaced apart described connecting rod and the described dynamic insulating sheath touching bridge.

Accompanying drawing explanation

Fig. 1 is the sectional view of the relay of one embodiment of this utility model, and wherein, the described dynamic bridge location that touches is in described open position.

Fig. 2 is the close-up schematic view of Fig. 1 centre circle a-quadrant.

Fig. 3 is the sectional view of the relay of this utility model embodiment shown in this Fig. 1, and wherein, the described dynamic bridge location that touches is in described conduction position.

Fig. 4 is the sectional view of the local part of the relay of one embodiment of this utility model.

Fig. 5 is the dynamic axonometric chart touching bridge of the relay of one embodiment of this utility model.

Fig. 6 is the exploded perspective view of the local part of the relay of one embodiment of this utility model.

Fig. 7 is the sectional view of the relay of another embodiment of this utility model, and wherein, the described dynamic bridge location that touches is in described open position.

Reference:

Relay 100,

Casing 1, the first stationary contact 11, the second stationary contact 12, housing 101, supporting plate 102, connected unit 103, cavity 104

Dynamic tactile bridge 2, the first contact site 21, the second contact site 22, insulated cavity 23, the first insulated cavity 231, the second insulated cavity 232, barricade 233, drive division 24, the first breach 201, first boss 202, the second breach 203, the second boss 204,3rd breach 205, the 3rd boss 206, the 4th breach 207,4th boss 208

Electric fuse 3, the first electric fuse 31, the second electric fuse 32,

Driving means 4, sleeve 41, limited post 42, iron core 43, connecting rod 44, back-moving spring 45, insulating sheath 46, buffer spring 47, jump ring 48, packing ring 49, upper insulating boot 461, lower insulating boot 462.

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, and the most same or similar label represents same or similar element or has the element of same or like function.The embodiment described below with reference to accompanying drawing is exemplary, it is intended to be used for explaining this utility model, and it is not intended that to restriction of the present utility model.

In the relay of correlation technique, owing to not having overload protection arrangement, when relay adhesive, once load current is excessive or circuit is short-circuited and is easily caused sintering, makes product loss of function, causes danger.It addition, do not have arc-control device in above-mentioned technology, the arc time is long, and product is short for service life.In order to solve one of technical problem in correlation technique the most to a certain extent, present applicant proposes a kind of relay, safety and stability is higher.

Describe the relay 100 of this utility model embodiment with reference to the accompanying drawings in detail.

In conjunction with Fig. 1 to Fig. 6, according to the relay 100 of one embodiment of this utility model, including: casing 1, dynamic touch bridge 2 and driving means 4.

Specifically, casing 1 is provided with the first stationary contact 11 and the second stationary contact 12 of mutually insulated.The dynamic bridge 2 that touches is movably arranged in casing 1 between conduction position and open position.

The dynamic bridge 2 that touches includes the first contact site 21 and the second contact site 22, wherein the first contact site 21 and the second contact site 22 are corresponding with the first stationary contact 11 and the second stationary contact 12 respectively, in other words, first contact site 21 is corresponding with the first stationary contact 11, and second contact site 22 corresponding with the second stationary contact 12, two contact sites are spaced from each other and mutually insulated

The dynamic bridge 2 that touches also includes insulated cavity 23, is provided with electric fuse 3 in insulated cavity 23, and the first contact site 21 and the second contact site 22 are electrically connected by electric fuse 3.Have a talk about in other words, when not connecting electric fuse 3, be mutually insulated between the first contact site 21 and the second contact site 22, after being provided with electric fuse 3, by electric fuse 3, first contact site 21 and the second contact site 22 are conducted.

The dynamic bridge 2 that touches is movably arranged in casing 1 between conduction position and open position.Wherein, as shown in Figure 3, when dynamic tactile bridge 2 is positioned at conduction position, movable contact and first stationary contact 11 of the first contact site 21 dock, and second contact site 22 movable contact and the second stationary contact 12 dock, owing to the first contact site 21 and the second contact site 22 electrically connect (by electric fuse 3), now the first stationary contact 11 and the second stationary contact 12 conduct, it may also be said to conducted by two stationary contacts by electric fuse 3；As shown in Figure 1, when dynamic tactile bridge 2 is positioned at open position, movable contact and first stationary contact 11 of the first contact site 21 separate, movable contact and second stationary contact 12 of the second contact site 22 separate, owing to itself being mutually insulated between two stationary contacts, and not over the dynamic bridge that touches, the two stationary contact is connected together, therefore, the first stationary contact 11 and the second stationary contact 12 mutually disconnect and conducting.

During the use of relay 100, during if there is the problem such as current overload or short circuit, the first electric fuse 31 disconnects, so that the electrical connection between two stationary contacts disconnects, makes relay 100 be off, thus disconnecting circuit.

It addition, driving means 4 is connected with the dynamic bridge 2 that touches, driving means 4 drives the dynamic bridge 4 that touches to move between described conduction position and described open position.

Relay 100 according to this utility model embodiment; owing to being provided with electric fuse 3; the effect of overload protection and short-circuit protection is achieved, to improve the safety of the Circuits System with this relay 100, it is to avoid due to the fire etc. that stream or short circuit cause excessively by electric fuse 3.Electric fuse in insulated cavity, during fusing, it is possible to well controls its phenomenon of arc discharge.

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

It addition, electric fuse 3 is integrated in insulated cavity 23 by the application, facilitate replacing and the maintenance of relay 100 of electric fuse 3, it is simple to relay 100 and there is the operation and maintenance of Circuits System of this relay 100.

In conjunction with Fig. 3 to Fig. 6, in embodiments more of the present utility model, the dynamic bridge 2 that touches also includes drive division 24, insulated cavity is spaced between at least one in the first contact site 21 and the second contact site 22 and drive division 24, it is to say, at least one in the first contact site 21 and the second contact site 22 is spaced apart with drive division 24 and is linked together by the insulated cavity 23 being built-in with electric fuse 3.Wherein electric fuse 3 electrically connects with drive division 24, and is conducted by electric fuse 3 and drive division 24 between the first contact site 21 and the second contact site 22, and in other words, the first contact 21 does not realizes the electrical connection with the second contact site 22 by electric fuse 3 and drive division 24.

Therefore, in this utility model, by insulated cavity 23, by least one isolation in drive division 24 and the first contact site 21 and the second contact site 22, realize conducting between the first contact site 21 and the second contact site 22 by electric fuse the most again.

It addition, stationary contact and the docking of the first contact site for convenience, this utility model is provided with movable contact (not shown) at least one in the first contact site 21 and the second contact site 22.

In one embodiment of this utility model, the dynamic bridge 2 that touches includes drive division 24, first contact site 21, second contact site 22 and the first insulated cavity 231, described first contact site 21 is corresponding with described first stationary contact 11, described second contact site 22 is corresponding with described second stationary contact 12, described first insulated cavity 231 is arranged between described first contact site 21 and described drive division 24, described first insulated cavity 231 electrically insulates described first contact site 21 and described drive division 24, it is provided with the first electric fuse 31 in described first insulated cavity 231, described first contact site 21 is electrically connected by described first electric fuse 31 and described drive division 24, described second contact site 22 electrically connects with described drive division 24；Described first contact site the 21, second contact site the 22, first insulated cavity 231 is concordant with the upper surface of drive division 24, and described first contact site 21 and the second contact site 22 are provided with movable contact (not shown)；The described dynamic bridge 2 that touches is movably arranged in described casing 1 between conduction position and open position, the described dynamic movable contact touched on the first contact site 21 described in when bridge 2 is positioned at described conduction position contacts with described first stationary contact 11 and movable contact on described second contact site 22 contacts for making described first stationary contact 11 conduct with described second stationary contact 12 with described second stationary contact 12, the described movable contact moved on the first contact site 21 described in when tactile bridge 2 is positioned at described open position and described first stationary contact 11 separates and the movable contact of described second contact site 22 and the second stationary contact 12 separate so that described first stationary contact 11 mutually disconnects with described second stationary contact 12 conducts.

First contact site the 21, second contact site the 22, first insulated cavity 231 is concordant with the upper surface of drive division 24, the upper surface level height of the upper surface of the first contact site 21, the upper surface of the second contact site 22, the upper surface of the first insulated cavity 231 and drive division 24 is consistent, i.e. as in Fig. 1, upper surface horizontal alignment；It is easy to the dynamic integrated molding touching bridge 2, such as injection mo(u)lding.

Further, being provided with the second insulated cavity 232 between described second contact site 22 and described drive division 24, described second insulated cavity 232 electrically insulates described second contact site 22 and described drive division 24；Being provided with the second electric fuse 32 in described second insulated cavity 232, described second contact site 22 is electrically connected by described second electric fuse 232 and described drive division 24.

Now, arranging insulated cavity 23(between the second contact site 22 and drive division 24 is specially the second insulated cavity 232 equally), it is specially the second electric fuse 32 arranging electric fuse 3(between the second contact site 22 and drive division 24), improve the safety of relay further.

Further, the upper surface of above-mentioned second insulated cavity 232 is also concordant with the upper surface of drive division.

Preferably, insulated cavity 23(concrete for the first insulated cavity 231 or the second insulated cavity 232) in be filled with quartz sand, by quartz sand arc extinguishing, improve the security performance of relay.

Quartz sand is injected for convenience in insulated cavity 23, this utility model is specially the first insulated cavity 231 or the second insulated cavity 232 at insulated cavity 23() on be provided with note sand hole, by note sand hole, quartz sand can be injected in insulated cavity 23, additionally, note sand hole can be closed, to avoid quartz sand to reveal by closure member.

Drive division 24, annexation between insulated cavity the 23, first contact site 21 and the second contact site 22 are described below in the way of specific embodiment.

In conjunction with Fig. 4 to Fig. 6, in embodiments more of the present utility model, insulated cavity 23 includes the first insulated cavity 231, electric fuse includes the first electric fuse 31, first electric fuse 31 is arranged in the first insulated cavity 231, first insulated cavity 231 is connected with the first contact site 21 and described drive division 24 respectively, the first contact site 21 and drive division 24 is separated by the first insulated cavity 231, thus realize electrically insulating the first contact site 21 and drive division 24 by the first insulated cavity 231, and first electric fuse 31 be connected with the first contact site 21 and drive division 24 respectively, first electric fuse 31 conducts the first contact site 21 and drive division 24, thus realize conducting between the first contact site 21 and the second contact site 22.

So that mutually insulated between two contact sites, can be at the first insulated cavity 231 surface-coated insulating barrier；Insulating part can also be set between the first contact site 21 and the first insulated cavity 231.

Preferably, can be arranged to be made up of insulant by the first insulated cavity 231, for example, it is possible to the first insulated cavity 231 is arranged to the ceramic cavity of hollow.

Further, with reference to Fig. 4 and Fig. 6, first insulated cavity 231 is arranged to the hollow cavity of both ends open, first contact site 21 and drive division 24 are connected to the two ends of the first insulated cavity 231, one end of the first insulated cavity 231 is closed by the first contact site 21, and drive division 24 closes the other end of the first insulated cavity 231, additionally, it is internal that first electric fuse 31 may be mounted at the first insulated cavity 231, both ends open due to the first insulated cavity 231, therefore, it can facilitate electric fuse to connect the first contact site 21 and drive division 24.

It addition, such as Fig. 4, the first contact site 21 and drive division 24 close off the two ends of the first insulated cavity 231, in the first insulated cavity 231, limit a chamber closed.The first electric fuse 31 is accommodated in first insulated cavity 231; thus the first electric fuse 31 is played certain protective effect; when the first electric fuse 31 fuses, it is to avoid the first electric fuse 31 of fusing is scattered generation potential safety hazard, thus improves the security performance of relay 100.

In conjunction with Fig. 4 to Fig. 6, the first breach 201 is formed on the end face of first end (with reference to the right-hand member of the first insulated cavity 231 in Fig. 6) of the first insulated cavity 231, one end (with reference to the left end of drive division in Fig. 6 24) end face of drive division 24 is provided with the first outwardly boss 202, first boss 202 is corresponding with the first breach 201, first end end face of the first insulated cavity 231 is complementary with the end surface shape of drive division 24 one end and mutually fastens, and wherein the first boss 202 coordinates with the first breach 201.When the first insulated cavity 231 is connected with drive division 24, first insulated cavity 231 location relative to drive division 24 can be realized by the cooperation of the first breach 201 and the first boss 202, to facilitate, the first insulated cavity 231 is arranged on drive division 24, improves the first insulated cavity 231 and the installation effectiveness of the first contact site 21 and stability.

It should be noted that two surface complementarities refer to: when two surfaces fit to together, a surface is provided with projection, is then arranged in correspondence with breach on another one surface.Specifically, first end end face of the first insulated cavity 231 is complementary with the end surface shape of drive division 24 one end, refer to: on the first insulated cavity 231, be provided with the first breach 201, place corresponding with the first breach 201 on drive division 24 is provided with the first boss 202, first breach 201 is identical with the shape of the first boss 202, when assembling, first boss 202 coordinates in the first breach 201, so that together with the first paragraph end face of the first insulated cavity 231 fits to one end end face of drive division 24, it is achieved the first breach 201 and fastening of the first boss 202.Additionally, it will be understood by those skilled in the art that, first end face of the first insulated cavity 231 has the first breach 201, then necessarily it is formed with a protruding structure (for the first breach 201) on the first end face of the first insulated cavity 231, and the end surface shape complementation of the first end end face of the first insulated cavity 231 and drive division 24 one end also includes, end face corresponding with the first insulated cavity 231 on drive division 24 is also formed with the gap structure (relative to first boss 202 for) corresponding with this bulge-structure.It is referred to foregoing description hereinafter with regard to the shape complementarity of two end faces the explanation that fastens.

In conjunction with Fig. 4 and Fig. 6, the second breach 203 is formed on the end face of second end (with reference to the left end of the first insulated cavity 231 in Fig. 6) of the first insulated cavity 231, one end end face (with reference to the right side of the first contact site 21 in Fig. 6) of the first contact site 21 is provided with the second outwardly boss 204, second boss 204 is corresponding with the second breach 203, the end surface shape of the second end (with reference to the left side of the first insulated cavity 231 in Fig. 6) end face of the first insulated cavity 231 and first contact site 21 one end is complementary and mutually fastens, and wherein the second boss 204 coordinates with the second breach 203.When the first insulated cavity 231 is connected with the first contact site 21, first insulated cavity 231 location relative to the first contact site 21 can be realized by the cooperation of the second boss 204 and the second breach 203, to facilitate, the first contact site 21 is arranged on the first insulated cavity 231, improves the first insulated cavity 231 and the installation effectiveness of the first contact site 21 and stability.

Preferably, the first contact site 21 welds with the first insulated cavity 231, and the first insulated cavity 231 welds with drive division 24 so that stable connection between the first contact site 21 and drive division 24, and the intensity of connection is high, thus improves the stability of relay.

Additionally, metal level can be set on the first insulated cavity 231, when the first insulated cavity 231 is connected the first contact site 21 and drive division 24 respectively, the first contact site 21 can be with the first stable welding of insulated cavity 231, and the first insulated cavity 231 stably can weld with drive division 24.

In order to improve the arc quenching effect of relay 100 further, this utility model is filled with quartz sand (not shown) in the first insulated cavity 231.By quartz sand arc extinguishing, it is to avoid owing to producing the potential safety hazard that electric arc causes, decrease arcing when electric fuse 3 fuses and do not open the impact that product safety is caused.

Advantageously, the first insulated cavity 231 is additionally provided with note sand hole and closure member (not shown), in can closing or open note sand hole, and the first insulated cavity 231 by closure member, is filled with quartz sand.

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.

It addition, this utility model can only be turned on by electric fuse between and drive division 24 in the first contact site 21 and the second contact site 22, another realization that then directly links together with drive division 24 in the first contact site 21 and the second contact site 22 conducts.

Certainly, the first contact site 21 and the second contact site 22 can also all and be turned between drive division 24 by this utility model by electric fuse.

Specifically, in order to improve the safety and stability of relay further, it is also possible to the second contact site is arranged to the structure identical with the first contact site.It is to say, with reference to Fig. 4, insulated cavity 23 also includes the second insulated cavity 232, and electric fuse 3 also includes the second electric fuse 32.Second electric fuse 32 is arranged in the second insulated cavity 232, second insulated cavity 232 is connected with the second contact site 22 and described drive division 24 respectively, the second contact site 22 and drive division 24 is separated by the second insulated cavity 232, thus realize electrically insulating the second contact site 22 and drive division 24 by the second insulated cavity 232, and second electric fuse 32 be connected with the second contact site 22 and drive division 24 respectively, second electric fuse 32 conducts the second contact site 22 and drive division 24, thus realizes conducting between the first contact site 21 and the second contact site 22.

So that mutually insulated between two contact sites, can be at the second insulated cavity 232 surface-coated insulating barrier；Insulating part can also be set between the second contact site 22 and the second insulated cavity 232.

Preferably, can be arranged to be made up of insulant by the second insulated cavity 232, for example, it is possible to the second insulated cavity 232 is arranged to the ceramic cavity of hollow.

Further, with reference to Fig. 4 and Fig. 6, second insulated cavity 232 is arranged to the hollow cavity of both ends open, second contact site 22 and drive division 24 are connected to the two ends of the second insulated cavity 232, one end of the second insulated cavity 232 is closed by the second contact site 22, and drive division 24 closes the other end of the second insulated cavity 232, additionally, it is internal that second electric fuse 32 may be mounted at the second insulated cavity 232, both ends open due to the second insulated cavity 232, therefore, it can facilitate electric fuse to connect the second contact site 22 and drive division 24.

It addition, the second contact site 22 and drive division 24 close off the two ends of the second insulated cavity 232, in the second insulated cavity 232, limit a chamber closed.The second electric fuse 32 is accommodated in second insulated cavity 232; thus the second electric fuse 32 is played certain protective effect; when the second electric fuse 32 fuses, it is to avoid the second electric fuse 32 of fusing is scattered generation potential safety hazard, thus improves the security performance of relay 100.

In conjunction with Fig. 4 to Fig. 6, the 3rd breach 205 is formed on the end face of first end (with reference to the left end of the second insulated cavity 232 in Fig. 6) of the second insulated cavity 232, the other end (with reference to the right-hand member of drive division in Fig. 6 24) end face of drive division 24 is provided with the 3rd outwardly boss 206,3rd boss 206 is corresponding with the 3rd breach 205, first end end face of the second insulated cavity 232 is complementary with the end surface shape of drive division 24 one end and mutually fastens, and wherein the 3rd breach 205 coordinates with the 3rd boss 206.When the second insulated cavity 232 is connected with drive division 24, second insulated cavity 232 location relative to drive division 24 can be realized by the cooperation of the 3rd breach 205 and the 3rd boss 206, to facilitate, the second insulated cavity 232 is arranged on drive division 24, improves the second insulated cavity 232 and the installation effectiveness of the second contact site 22 and stability.

In conjunction with Fig. 4 and Fig. 6, the 4th breach 207 is formed on the end face of second end (with reference to the right-hand member of the first insulated cavity 231 in Fig. 6) of the second insulated cavity 232, one end end face (with reference to the left side of the second contact site 22 in Fig. 6) of the second contact site 22 is provided with the 4th outwardly boss 208,4th boss 208 is corresponding with the 4th breach 207, the end surface shape of the second end end face of the second insulated cavity 232 and second contact site 22 one end is complementary and mutually fastens, and wherein the 4th boss 208 coordinates with the 4th breach 207.When the second insulated cavity 232 is connected with the second contact site 22, second stationary contact 12 location relative to the second insulated cavity 232 can be realized by the cooperation of the 4th boss 208 and the 4th breach 207, to facilitate, the second contact site 22 is arranged on the second insulated cavity 232, improves the second insulated cavity 232 and the installation effectiveness of the second contact site 22 and stability.

Preferably, the second contact site 22 welds with the second insulated cavity 232, and the second insulated cavity 232 welds with drive division 24 so that stable connection between the second contact site 22 and drive division 24, and the intensity of connection is high, thus improves the stability of relay.

Additionally, metal level can be set on the second insulated cavity 232, when the second insulated cavity 232 is connected the second contact site 22 and drive division 24 respectively, the second contact site 22 can be with the second stable welding of insulated cavity 232, and the second insulated cavity 232 stably can weld with drive division 24.

In order to improve the arc quenching effect of relay 100 further, this utility model is filled with quartz sand (not shown) in the second insulated cavity 232.By quartz sand arc extinguishing, it is to avoid owing to producing the potential safety hazard that electric arc causes, decrease arcing when electric fuse 3 fuses and do not open the impact that product safety is caused.

Advantageously, the second insulated cavity 232 is additionally provided with note sand hole and closure member (not shown), in can closing or open note sand hole, and the first insulated cavity 231 by closure member, is filled with quartz sand.

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.

It addition, the first contact site 21 can be arranged to about drive division 24 symmetrical with the second contact site 22, the first insulated cavity 231 and the second insulated cavity 232 are arranged symmetrically with about drive division 24.Preferably first insulated cavity 231 is of similar shape with the second insulated cavity 232.

In other words, the second insulated cavity 232 is identical with the attachment structure of drive division 24 and the second contact site 22.It addition, the structure that other structure of the second insulated cavity 232 is referred to the first insulated cavity 231 in previous embodiment obtains, this will be appreciated that for those skilled in the art.

Such as Fig. 1, in embodiments more of the present utility model, casing 1 includes: housing 101, supporting plate 102, connected unit 103.Wherein, the bottom-open of housing 101, supporting plate 102 is located at housing 101 below to close bottom housing 101, and connected unit 103 is connected with housing 101 and supporting plate 102 respectively.By housing 101 and the cooperation of supporting plate 102, a cavity 104 sealed can be formed in housing 101, to avoid grieshoch etc. to enter in casing 1, Electrical Safety can be improved simultaneously.And casing 1 is decomposed into housing 101, supporting plate 102 and connected unit 103, can conveniently move the installation touching the element such as bridge 2, driving means 4.

Preferably due to pottery has preferably intensity, high chemical stability and heat stability, but also it it is the non-conductor of electricity.Therefore, the housing 101 in this utility model is ceramic shell.Improve the insulating properties of casing 1, to reduce potential safety hazard.

Certainly, in other embodiments of this utility model, casing 1 can be other isolation material, and the concrete material of casing 1 is not construed as limiting by this utility model, 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, under the action of a magnetic field of Magnet, electric arc is elongated, now by arc-chute by the electric arc section of being divided into, simultaneously under the cooling effect of gas (hydrogen or nitrogen), fast arc extinction can be realized, such that it is able to improve the safety in utilization of relay 100 further.

Such as Fig. 1 and Fig. 2, in embodiments more of the present utility model, driving means 4 is connected to bottom casing 1, and driving means 4 includes connecting rod 44, and the upper end of connecting rod 44 is connected with the dynamic bridge 2 that touches, and the lower end of connecting rod 44 passes downwards casing 1.

In order to realize connecting rod 44 and the dynamic electric isolution touched between bridge 2, this utility model is arranged with insulating sheath in the periphery of connecting rod 44 upper end, the spaced apart connecting rod of insulating sheath 44 and dynamic tactile bridge 2.

Further, driving means 4 also 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 is located at the top in sleeve 41 and is connected with casing 1, iron core 43 is located at the bottom in sleeve 41 and vertically may move, one end of connecting rod 44 is connected with iron core 43 and the other end is connected with the dynamic bridge 2 that touches, and back-moving spring 45 is enclosed within outside connecting rod 44 and two ends compress iron core 43 and limited post 42 respectively.Thus, it is easy to realize the control to relay 100 break-make by pushing mechanism, such that it is able to improve the serviceability of relay 100 to a certain extent.

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

In conjunction with Fig. 1 to Fig. 3, in embodiments more of the present utility model, the dynamic bridge 2 that touches is provided with via (not shown), the upper end of connecting rod 44 is (such as, the upper end of connecting rod 44 in Fig. 1) via can be passed, connecting rod 44 is provided with jump ring 48 and packing ring 49 through the end of via, and packing ring 49 can reduce the stress of jump ring 48 and can prevent jump ring 48 from coming off, and so can improve the job stability of relay 100 further.The outside of connecting rod 44 is provided with buffer spring 47, and buffer spring 47 may be used for often promoting connecting rod 44 to make to touch bridge 2 and compresses jump ring 48.Thus, the action that can make connecting rod 44 is milder, it is also possible to improve the action accuracy of relay 100.

Wherein, one end of buffer spring 47 is connected with the dynamic bridge 2 that touches, and the other end of buffer spring 47 is connected with in connecting rod 44 and shell.

It is to say, combine Fig. 1 and Fig. 2, one end of buffer spring 47 is connected (such as, the upper end of buffer spring 47 in Fig. 1) with the dynamic bridge 2 that touches, and the other end (such as, the lower end of buffer spring 47 in Fig. 1) of buffer spring 47 is connected with the dynamic bridge 2 that touches；Can also be that one end of buffer spring 47 is connected (such as, the upper end of buffer spring 47 in Fig. 1) with the dynamic bridge 2 that touches, the other end (such as, the lower end of buffer spring 47 in Fig. 1) of buffer spring 47 be connected with casing 1；Certainly can also is that the upper end of buffer spring 47 connects casing 1 and lower end and connects and dynamic touch bridge 2, now buffer spring should often be in the state of stretching.So can improve the operation stability of relay 100, preferably meet the demand of user.

Further, as in figure 2 it is shown, the inner side of described via can be provided with insulating sheath 46, and insulating sheath 46 can be set in the outside of connecting rod 44.Thus, it is possible to connecting rod 44 is carried out certain protection, thereby may be ensured that connecting rod 44 accuracy of action and stationarity, and then improve the serviceability of relay 100.

Additionally, with reference to Fig. 2, insulating sheath of the present utility model includes insulating boot 461 and lower insulating boot 462, and upper insulating boot 461 includes the first cylinder and is positioned at the first flange of the first cylinder upper end, lower insulating boot 462 includes the second cylinder and is positioned at the second flange of the second cylinder lower end.First cylinder of upper insulating boot inserts in described via, and first flange be against the dynamic upper surface touching bridge, second cylinder of lower insulating boot inserts in described via, and the second flange is against on the dynamic lower surface touching bridge, and the first cylinder and the second cylinder nesting are arranged in via.

As shown in Figures 1 to 6, this utility model is a kind of relay 100 with short-circuit protection function, and the overcurrent protection of existing circuit is capable of again the function of chopper.Wherein short-circuit protection structure is made up of movable contact (including the first contact site 21 and the second contact site 22), pottery chamber (such as first insulated cavity 231 and the second insulated cavity 232), electric fuse (such as first electric fuse 31 and the second electric fuse 32), the dynamic parts such as bridge 2 that touch.

Pottery surface, left and right, chamber carries out surface metalation process, electric fuse is placed in pottery intracavity, assemble movable contact, pottery chamber and dynamic tactile bridge in order, by the dynamic tactile bridge of electric fuse shown in its soldering one composition diagram 5, in pottery lumen pore, now inject quartz sand set screw (i.e. closure member) lock, loose contact when movable contact prevents from contacting with stationary contact higher than pottery surface, chamber.Electric fuse plays the effect of overload protection, and quartz sand plays arc extinguishing effect when blown fuse, splashes and the insulating effect of upper and lower movable contact after blown fuse when playing supports, fixing, protection blown fuse in pottery chamber.

As shown in Figure 1: assemble buffer spring 47, lower insulating boot 462, dynamic bridge 2, the upper insulating boot 461 of touching, finally assembling packing ring 49 on connecting rod 44 successively, then fix with jump ring 48.

As it is shown in figure 1, be encased in pushing mechanism after being assembled into assembly, connecting rod 44 loads onto supporting plate 102, limited post 42, back-moving spring 45 successively, and iron core 43 mode of laser welding or screw thread is fixed with connecting rod 44.These mechanism's release conditions such as Fig. 1, such as Fig. 3 after relay pushing mechanism starts working adhesive, the dynamic bridge 2 that touches contacts with electric fuse stationary contact, electric fuse is passed through in load, when load current is too high or circuit is short-circuited, the blowout magnet that relay is external, under the effect of the triple arc extinguishing of quartz sand of cooled hydrogen in cavity and pottery intracavity, can arc extinguishing rapidly, effectively increase life of product.Two groups of insurance stationary contacts act on simultaneously, and safer plays a protective role.The vertical barricade in pottery surface, chamber can increase movable contact and the dynamic creep age distance touching bridge, and during preventing the actuating of relay, copper scale conducting movable contact touches bridge with dynamic, and after blown fuse, relay still turns on.Under attracting state, connecting rod 44 is isolated with high-voltage load end by upper insulating boot 461 with lower insulating boot 462, and then is insulated by high-low pressure, it is to avoid the damage of low-pressure end components and parts and the generation of punch-through, thus improves quality and the safety of product.

This utility model uses electric fuse to carry out overload protection, effectively avoids the danger that load current is too high or short circuit causes.Under the effect of the triple arc extinguishing of the blowout magnet that relay is external simultaneously, the cooled hydrogen in cavity and the quartz sand in ceramic ring, it is possible to arc extinguishing rapidly, effectively increase life of product.Two groups of dynamic bridges that touch of electric fuse act on simultaneously, and then improve the accuracy of the fusing of product and the safety of use.Comparatively speaking, electric fuse is combined by this utility model with relay, has saved overall use space and cost, and being used by the arc-extinguishing mechanism of relay on electric fuse can the effectively quality of improving product and safety.

This utility model uses electric fuse to carry out overload protection, if having the protective measure of other forms also in the range of this patent；The dead ring that this utility model is used is ceramic material, if there being other nonmetallic materials can fix movable contact also in the range of this patent equally.

In description of the present utility model, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", on " ", D score, " front ", " afterwards ", " left ", " right ", " vertically ", " level ", " push up ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", orientation or the position relationship of the instruction such as " circumferential " are based on orientation shown in the drawings or position relationship, it is for only for ease of description this utility model and simplifies description, rather than indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.

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, three etc., unless otherwise expressly limited specifically.

In this utility model, unless otherwise clearly defined and limited, term " is installed ", " being connected ", " connection ", the term such as " fixing " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be to be 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 connection or the interaction relationship of two elements of two element internals, unless otherwise clear and definite restriction.For the ordinary skill in the art, 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, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can 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, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means that the specific features, structure, material or the feature that combine this embodiment or example description are contained at least one embodiment of the present utility model or example.In this manual, the schematic representation of above-mentioned term is necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be to combine in one or more embodiments in office or example in an appropriate manner.Additionally, in the case of the most conflicting, the feature of the different embodiments described in this specification or example and different embodiment or example can be combined and combine by those skilled in the art.

Although above it has been shown and described that embodiment of the present utility model, it is understandable that, above-described embodiment is exemplary, it is not intended that to restriction of the present utility model, above-described embodiment can be changed in the range of this utility model, revises, replace and modification by those of ordinary skill in the art.

Claims (15)

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

Casing, described casing is provided with the first stationary contact and second stationary contact of mutually insulated；

Dynamic tactile bridge, the described dynamic bridge that touches includes drive division, first contact site, second contact site and the first insulated cavity, described first contact site is corresponding with described first stationary contact, described second contact site is corresponding with described second stationary contact, described first insulated cavity is arranged between described first contact site and described drive division, described first insulated cavity electrically insulates described first contact site and described drive division, it is provided with the first electric fuse in described first insulated cavity, described first contact site is electrically connected by described first electric fuse and described drive division, described second contact site electrically connects with described drive division；Described first contact site, the second contact site, the first insulated cavity are concordant with the upper surface of drive division, and described first contact site and the second contact site are provided with movable contact；The described dynamic bridge that touches is movably arranged in described casing between conduction position and open position, the described dynamic movable contact touched on bridge location first contact site described in when described conduction position contact with described first stationary contact and movable contact on described second contact site contacts with described second stationary contact and is used for making described first stationary contact conduct with described second stationary contact, and the described movable contact moved on tactile bridge location first contact site described in when described open position separates with described first stationary contact and the movable contact of described second contact site and the separation of the second stationary contact are so that described first stationary contact mutually disconnects with described second stationary contact conducts；

Driving means, described driving means is connected to drive the described dynamic bridge that touches to move between described conduction position and described open position with the described dynamic bridge that touches.

Relay the most according to claim 1, it is characterised in that described first insulated cavity is the ceramic chamber of hollow, and one end of described first insulated cavity is closed by described drive division and the other end is closed by described first contact site.

Relay the most according to claim 2, it is characterized in that, it is formed with the first breach on first end end face of described first insulated cavity, the end face of one end of described drive division is provided with the first outwardly boss, described first boss is corresponding with described first breach, the end face of the first end of described first insulated cavity and described drive division is provided with the shape complementarity of the end face of the first boss and mutually fastens.

Relay the most according to claim 2, it is characterized in that, it is formed with the second breach on second end end face of described first insulated cavity, the end face of described first contact site is provided with outwardly and corresponding with described second breach the second boss, and the end face of the second end of described first insulated cavity and described first contact site are provided with the shape complementarity of the end face of the first boss and mutually fasten.

Relay the most according to claim 1, it is characterised in that described second contact site is joined directly together with described drive division and conducts.

Relay the most according to claim 1, it is characterised in that be provided with the second insulated cavity between described second contact site and described drive division, described second insulated cavity electrically insulates described second contact site and described drive division；Being provided with the second electric fuse in described second insulated cavity, described second contact site is electrically connected by described second electric fuse and described drive division.

Relay the most according to claim 6, it is characterised in that described second insulated cavity is the ceramic chamber of hollow, and one end of described second insulated cavity is closed by described drive division and the other end is closed by described second contact site.

Relay the most according to claim 7, it is characterized in that, it is formed with the 3rd breach on first end end face of described second insulated cavity, the end face of the other end of described drive division is provided with the 3rd outwardly boss, described 3rd boss is corresponding with described 3rd breach, the end face of the first end of described second insulated cavity and described drive division is provided with the shape complementarity of the end face of the 3rd boss and mutually fastens.

Relay the most according to claim 7, it is characterized in that, it is formed with the 4th breach on second end end face of described second insulated cavity, the end face of described second contact site is provided with outwardly and corresponding with described 4th breach the 4th boss, and the end face of the second end of described second insulated cavity and described second contact site are provided with the shape complementarity of the end face of the 4th boss and mutually fasten.

Relay the most according to claim 6, it is characterised in that described first contact site and described second contact site are arranged symmetrically with about described drive division, described first insulated cavity and described second insulated cavity are arranged symmetrically with about described drive division.

11. according to the relay according to any one of claim 1-10, it is characterised in that be filled with quartz sand in described first insulated cavity.

12. relays according to claim 11, it is characterised in that described first insulated cavity is provided with note sand hole, and described first insulated cavity is provided with the closure member for closing described note sand hole.

13. according to the relay according to any one of claim 1-10, 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.

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

15. relays according to claim 1, it is characterised in that described driving means is connected to described bottom of shell, described driving means includes connecting rod, and the upper end of described connecting rod is connected with the described dynamic bridge that touches, and the lower end of described connecting rod passes downwards described casing,

Wherein, the periphery of described small end is arranged with spaced apart described connecting rod and the described dynamic insulating sheath touching bridge.