CN107452555A - Relay - Google Patents

Abstract

The invention discloses a kind of relay, the relay includes：Shell, bottom plate, elastic component and drive device, shell are provided with stationary contact group；Bottom plate is provided with movable contact group corresponding with stationary contact group, bottom plate is provided with fuse, conducted between two movable contacts of at least one movable contact group by fuse, bottom plate is movably arranged in shell between the open position that the conduction position and movable contact group that movable contact group contacts with stationary contact group separate with stationary contact group, when bottom plate is located at conduction position, conducted between two stationary contacts of stationary contact group；Elastic component is arranged on bottom plate, and elastic component flicks fuse in blown fuse；Drive device is connected with bottom plate to drive bottom plate to be moved between conduction position and open position.According to the relay of the present invention, after blown fuse, elastic component can be utilized to flick the both ends of fuse, prevent fuse from contacting again, improve the safety and reliability of relay.

Description

Relay

Technical field

The present invention relates to relay technical field, more particularly, to a kind of relay.

Background technology

In relay in correlation technique, usually not overload protection arrangement, when the electric current loaded in circuit is excessive or circuit When short-circuit, easily relay is caused to sinter, so that relay loss of function, causes danger.And being provided with correlation technique The relay of fuse, fuse is directly set typically between movable contact and movable contact, it is straight by overlap joint or other modes Connect and fuse is arranged on dynamic touch panel；In this fuse scheme, after blown fuse, two of fuse after fusing End easily overlaps or turned on by other conductive components, fuse is lost defencive function, causes to burn out in circuit Component, great potential safety hazard be present.

The content of the invention

It is contemplated that at least solves one of technical problem present in prior art.Therefore, the invention reside in propose it is a kind of after Electrical equipment, the relay have simple in construction, reliability and it is safe the advantages of.

According to the relay of the present invention, including：Shell, the shell are provided with stationary contact group, and the stationary contact group includes two The stationary contact of individual mutually insulated；Bottom plate, the bottom plate is provided with movable contact group corresponding with the stationary contact group, described dynamic tactile Point group includes two movable contacts, is conducted between two movable contacts of at least one movable contact group by the fuse, The fuse is located on the bottom plate, the conduction position and movable contact group that the bottom plate contacts in movable contact group with stationary contact group It is movably arranged between the open position separated with stationary contact group in the shell, when the bottom plate is located at conduction position, institute State and conduct between two stationary contacts of stationary contact group；Elastic component, the elastic component are arranged on bottom plate, and in the insurance The elastic component flicks the fuse during silk fusing；Drive device, the drive device are connected to drive with the bottom plate State bottom plate and moved between the conduction position and the open position.

According to the relay of the present invention, by setting elastic component on bottom plate, thus, after blown fuse, can utilize Elastic component flicks the fuse of fusing, prevents fuse from contacting again, so as to improve the safety and reliability of relay.

In some embodiments of the invention, the elastic component is located between the fuse and the bottom plate, the elastic component Upper end be against on the lower surface of the fuse and lower end is against on the bottom plate, and the elastic component is often in being compressed State.

In some embodiments of the invention, the both ends of the fuse are fixedly connected with the bottom plate, in the fuse Between leave gap between part and the bottom plate, the elastic component is arranged in the gap, and the upper end of the elastic component is against The center section of the fuse.

Preferably, the drive device includes connecting rod, and the upper end of the connecting rod is upward through the bottom plate, set on the bottom plate Pad is equipped with, the pad is located between top and the bottom plate of the connecting rod, and the upper end of the elastic component is against the guarantor The lower surface of dangerous silk, the lower end of the elastic component are against on the pad.

Preferably, the top of the connecting rod is provided with jump ring, and the pad is between the jump ring and the bottom plate.

Further, the sheath for the bottom plate and the connecting rod to be separated is arranged with the outer peripheral face of the connecting rod.

In some embodiments of the invention, the fuse is in the form of sheets.

In some embodiments of the invention, the bottom plate is ceramic bottom board.

In some embodiments of the invention, the spring is insulated spring.

In some embodiments of the invention, the both ends of the fuse and the movable contact distinguish soldering on the bottom plate.

In some embodiments of the invention, the movable contact pushes down the edge of the fuse.

In some embodiments of the invention, the bottom plate is provided with stopper slot, and the lower surface of the movable contact is provided with limit convex Rise, the spacing preiection coordinates in the stopper slot.

In some embodiments of the invention, the bottom plate is provided with heat emission hole corresponding with the movable contact, the heat emission hole Penetrate the bottom plate.

In some embodiments of the invention, the shell includes：Housing, the bottom-open of the housing；Supporting plate, it is described Supporting plate is located at below the housing to close the housing bottom；Connected unit, the connected unit respectively with the housing and described Supporting plate is connected.

Preferably, the housing is ceramic shell.

In some embodiments of the invention, hydrogen or helium are filled with the shell.

The additional aspect and advantage of the present invention will be set forth in part in the description, and partly will become bright from the following description It is aobvious, or recognized by the practice of the present invention.

Brief description of the drawings

Fig. 1 is a use state diagram of relay according to embodiments of the present invention, and bottom plate is in conduction position, elastic component Fuse is not flicked；

Fig. 2 is the enlarged drawing at the A that Fig. 1 centre circles show；

Fig. 3 is another use state diagram for the relay that one embodiment of the invention provides, bottom plate in open position, Elastic component flicks fuse；

Fig. 4 is the enlarged drawing at the B that Fig. 3 centre circles show；

Fig. 5 is the explosive view for the relay that one embodiment of the invention provides；

Fig. 6 is the schematic diagram of the bottom plate shown in Fig. 5.

Reference：

Relay 100,

Shell 1, housing 11, supporting plate 12, connected unit 13,

Stationary contact 2,

Bottom plate 3, stopper slot 31, heat emission hole 32, via 33, sheath 34,

Movable contact 4, spacing preiection 41,

Fuse 5, fuse part 51, elastic component 6,

Drive device 7,

Sleeve 71, limited post 72, iron core 73, connecting rod 74, defining flange 741,

Back-moving spring 75, jump ring 76, pad 77, buffer spring 78.

Embodiment

Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein identical from beginning to end Or similar label represents same or similar element or the element with same or like function.Retouched below with reference to accompanying drawing The embodiment stated is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.

Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.In order to simplify this The disclosure of invention, hereinafter the part and setting of specific examples are described.Certainly, they are only example, and mesh Do not lie in limitation the present invention.In addition, the present invention can in different examples repeat reference numerals and/or letter.This repetition It is the relation between itself not indicating discussed various embodiments and/or setting for purposes of simplicity and clarity.In addition, The invention provides various specific techniques and material examples, but those of ordinary skill in the art can be appreciated that other The applicable property of technique and/or the use of other materials.

Relay 100 according to embodiments of the present invention is described in detail below with reference to Fig. 1-Fig. 6.

As shown in figure 1, relay 100 according to embodiments of the present invention, including：Shell 1, bottom plate 3, elastic component 6 and drive Dynamic device 7.

Specifically, shell 1 is provided with stationary contact group, and stationary contact group includes the stationary contact 2 of two mutually insulateds；Set on bottom plate 3 There is movable contact group corresponding with stationary contact group, movable contact group includes two movable contacts 4, and bottom plate 3 is provided with fuse 5, at least Conducted between two movable contacts 4 of one movable contact group by fuse 5, bottom plate 3 connects in movable contact group and stationary contact group Open position that tactile conduction position (such as conduction position shown in Fig. 1) and movable contact group separate with stationary contact group (such as Open position shown in Fig. 3) between be movably arranged in shell 1, when bottom plate 3 is located at conduction position, stationary contact group Conducted between two stationary contacts 2.

Two movable contacts 4 of above-mentioned movable contact group, only can just be conducted by fuse 5.More specifically, movable contact group It is insulation in itself between two movable contacts 4, because there is provided the ability of fuse 5 by two conductances of movable contact 4 of movable contact group It is logical；If there is no fuse 5, then be insulation between two movable contacts 4 of movable contact group.

As shown in figure 3, elastic component 6 is arranged on bottom plate 3, and elastic component 6 flicks fuse 5 when fuse 5 fuses. That is, when fuse 5 fuses, elastic component 6 can divide fuse 5 for two parts but also avoid this two parts Turn on again.As shown in Figure 3 and Figure 4, fuse 5 fuse after, elastic component 6 can by fuse 5 from the position of fusing to On flick, separate two after fusing sections of fuses 5.Thus, it is possible to prevent the fuse 5 after fusing from contacting again, carry The safety and reliability of high relay 100.Drive device 7 is connected with bottom plate 3 to drive bottom plate 3 in conduction position and break Moved between open position.

Relay 100 according to embodiments of the present invention, by setting elastic component 6 between fuse 5 and bottom plate 3, thus, When fuse 5 is had no progeny, fuse 5 can be flicked using elastic component 6, prevent fuse 5 from contacting again, improve relay 100 safety and reliability.

One or more stationary contact groups can be set on the shell 1 in the present invention.Corresponding movable contact group can also set one Or it is multiple, two movable contacts 4 of at least one movable contact group are turned on by fuse 5.For example, movable contact group is one, and Turned between two movable contacts 4 of this movable contact group by fuse 5；For another example movable contact group is two, two dynamic Two movable contacts 4 of one in contact sets are turned on by fuse 5, and another two in two movable contact groups are dynamic tactile Point 4 is turned on by fuse；For another example movable contact group is two, and each two in two movable contact groups Movable contact 4 turns on by fuse.

Certainly, the present invention is not limited the quantity of stationary contact group and movable contact group, for example, stationary contact group and movable contact The quantity of any of group can be three, four or other arbitrary quantity.

, wherein it is desired to illustrate, fuse 5 is flicked after fusing by elastic component 6 in the present invention, is divided fuse 5 and is Two parts but also this two parts is avoided to turn on again.

In some embodiments of the invention, such as Fig. 1 and Fig. 4 is combined, elastic component 6 can be located at fuse 5 and bottom plate 3 Between, the upper end of elastic component 6 is against on the lower surface of fuse 5 and lower end is against on bottom plate 3, and elastic component 6 is often in The state compressed.So, when drive device 7 drives bottom plate 3 movable contact 4 is turned on stationary contact 2, relay 100 Turned on external circuit, have in fuse 5 electric current by, when electric current is excessive in fuse 5 or during short circuit, fuse 5 Fusing, as shown in figure 3, fuse 5 fuse after formed two sections, this any of two sections one end be connected with bottom plate 3 and separately The flexible part 6 in one end compresses, and now, elastic component 6 discharges the elastic force compressed, promotes in two sections after the fusing of fuse 5 Moved up by the end that elastic component 6 compresses, avoid fuse 5 from contacting again, so as to realize elastic component 6 by after fusing The effect that fuse 5 flicks.

In certain embodiments, as shown in figure 1, both ends (such as the left and right of the fuse 5 shown in Fig. 1 of fuse 5 Both ends) it is fixedly connected with bottom plate 3, gap is left between the center section of fuse 5 and bottom plate 3, elastic component 6 is arranged on In gap, the upper end of elastic component 6 is against the center section of fuse 5.Thus, it is possible to it is easy to the bullet after fuse 5 fuses Property part 6 can flick fuse 5, make the structure more compact and reasonable of relay 100.Here " center section ", it is not Center is criticized, and refers to the part between the both ends of fuse 5, referred to as center section.

Specifically, with reference to Fig. 1, Fig. 2 and Fig. 5, left and right ends and the bottom plate 3 of fuse 5 are fixedly linked and middle part (on Center section in text) raise up and spaced a distance with bottom plate 3, the middle part of fuse 5 formed with fuse part 51, Elastic component 6 is located between bottom plate 3 and fuse 5 and the upper end of elastic component 6 is against the middle part of fuse 5, when circuit overloads or When short-circuit, the fuse part 51 of fuse 5 fuses, and fuse 5 is fused into two sections of left and right, and elastic component 6 recovers deformation upwards Fuse 5 is flicked, to prevent the both ends of fuse 5 from contacting again.

When fuse 5 does not fuse, the rigidity of fuse 5 is higher, elastic component 6 can not open fuse 5, and in fuse Rigidity reduces during 5 fusing, so that can be with open fuse 5 by elastic component 6.

Certainly, elastic component 6 can also be often in the state compressed, so as to which when fuse 5 fuses, elastic component 6 is upspring production Raw pulling force effect carrys out open fuse 5.

As shown in figure 1, in some embodiments of the invention, elastic component 6 can be adjustable spring, thus, by flexible bullet It is located at after spring precompressed between fuse 5 and bottom plate 3, can be in the bullet after utilizing adjustable spring precompressed after fuse 5 fuses Power flicks fuse 5, makes the structure of relay 100 simpler.Specifically, as depicted in figs. 1 and 2, in bottom plate 3 Precompressed adjustable spring is set between fuse 5, and after fuse 5 fuses, the upper end of adjustable spring is no longer influenced by guarantor The downward pressure of dangerous silk 5, adjustable spring release pressure recover deformation, promote the fuse 5 after fusing to be upturned, so as to The both ends of fuse 5 can be made to be spaced apart completely.

In some embodiments of the invention, elastic component 6 can be insulated spring.Thus, it is possible to elastic component 6 is insulated, Avoid elastic component 6 conductive, improve the security performance of relay 100.

In some embodiments of the invention, bottom plate 3 can be ceramic bottom board.Ceramics have good insulating properties and thermal conductivity Can, when the movable contact 4 on bottom plate 3 and stationary contact 2 turn on, have on movable contact 4 electric current by and produce heat, pass through Using the bottom plate 3 of ceramic material bottom plate 3 can be avoided conductive, improve the security of relay 100, meanwhile, ceramic material Opposing metallic material has more preferable heat dispersion, and service life is grown, and thus, ceramic bottom board can further improve bottom plate 3 heat dispersion, heat transfer is opened, and effectively avoids the local temperature of movable contact 4 and stationary contact 2 too high, so as to carry While the service life of high relay 100, the security reliability of relay 100 is improved.

Certainly, the invention is not restricted to this, bottom plate 3 can also use the nonmetallic materials of other insulation, as long as there is good Heat conductivility.

In some embodiments of the invention, fuse 5 can in the form of sheets, thus, it is possible to realize the insurance work(of fuse 5 On the premise of energy, the overall structure of simplifying relay 100, it is easy to elastic component 6 to flick fuse 5 when fuse 5 fuses.

In some embodiments of the invention, the both ends (such as left and right ends of the fuse 5 shown in Fig. 1) of fuse 5 Soldering can be distinguished on bottom plate 3 with movable contact 4, connected it is possible thereby to improve between fuse 5, movable contact 4 and bottom plate 3 The reliability connect.Certainly, the invention is not restricted to this, fuse 5 can also be connected with movable contact 4 using other assembly methods On bottom plate, as long as the reliability connected between fuse 5 and movable contact 4 and bottom plate 3 can be met.

In some embodiments of the invention, as shown in figures 1 to 6, stopper slot 31, movable contact can be provided with bottom plate 3 4 lower surface is provided with spacing preiection 41, and spacing preiection 41 coordinates in stopper slot 31, it is possible thereby to improve movable contact 4 with The reliability connected between bottom plate 3.

In some embodiments of the invention, as depicted in figs. 1 and 2, movable contact 4 pushes down the edge of fuse 5, thus, The reliability electrically connected between movable contact 4 and fuse 5 can be improved.

In some embodiments of the invention, as shown in Fig. 1, Fig. 5 and Fig. 6, bottom plate 3 is provided with corresponding with movable contact 4 Heat emission hole 32, heat emission hole 32 penetrate bottom plate 3, so, when movable contact 4 and the conducting of stationary contact 2, movable contact 4 and stationary contact Heat between point 2 can be radiated by heat emission hole 32, thus, it is possible to improve the heat dispersion of bottom plate 3, improve relay 100 security reliability.

In some embodiments of the invention, as shown in figure 1, shell 1 includes：Housing 11, supporting plate 12 and connected unit 13, Specifically, the bottom-open of housing 11, supporting plate 12 are located at housing 11 below to close the bottom of housing 11, and connected unit 13 is divided It is not connected with housing 11 and supporting plate 12.Thus, it is possible to be easy to the machine-shaping of shell 1, production efficiency is improved.

Further, housing 11 is ceramic shell, and ceramic shell can play a part of high-voltage isulation, thus, it is possible to effectively Ground avoids the low voltage component in relay 100 from being damaged by the affected by high in housing 11 or breakdown, so as to improve relay 100 safety and reliability.

In some embodiments of the invention, hydrogen or helium are filled with shell 1, hydrogen or helium can protect shell 1 Interior component (such as stationary contact 2, fuse 5 and movable contact 4 etc.), avoid component in shell 1 produce electric arc and Burn out, so as to further improve the security reliability of relay 100.

With reference to Fig. 1, Fig. 3 and Fig. 5, in some embodiments of the invention, drive device 7 includes connecting rod 74, connecting rod 74 upper end is upward through bottom plate 3, and the top of connecting rod 74 is provided with jump ring 76, and the upper end of elastic component 6 is against fuse 5 Lower surface, the lower end of elastic component is against on jump ring 76.Specifically, as depicted in figs. 1 and 2, drive device 7 is connected to To drive bottom plate 3 to move along the vertical direction, drive device 7 includes the bottom of shell 1：Sleeve 71, limited post 72, iron core 73rd, connecting rod 74 and back-moving spring 75.Wherein, the upper end of sleeve 71 is connected with shell 1；Limited post 72 is located in sleeve 71 Top and be connected with shell 1, the bottom that iron core 73 is located in sleeve 71 simultaneously vertically may move, and limited post 72 can be with Limit the displacement that iron core 73 moves up；The lower end of connecting rod 74 is connected with iron core 73 and the upper end of connecting rod 74 and the phase of bottom plate 3 Even, the outer sheath of iron core 73 is provided with coil (not shown), can drivening rod 74 and bottom plate when iron core 73 moves up and down 3 move up and down；Back-moving spring 75 is enclosed on the outside of connecting rod 74 and both ends compress iron core 73 and limited post 72, iron core 73 respectively When moving up, compression reseting spring 75, the back-moving spring 75 after compression, which recovers deformation, can promote iron core 73 to move down again Position.

When being alived in coil, coil produces induced field, and iron core 73 can move along the vertical direction under the influence of a magnetic field, When that need to turn on stationary contact 2 and movable contact 4, iron core 73 promotes connecting rod 74 to drive bottom plate 3 to transport upwards under the influence of a magnetic field It is dynamic, while compression reseting spring 75, until it is in conducting state that movable contact 4 contacts with stationary contact 2, when stationary contact 2 and move tactile When point 4 need to disconnect, the stress of iron core 73 is not enough to offset the compression stress of back-moving spring 75, after back-moving spring 75 is compressed Bounce promotes the drivening rod 74 of iron core 73 and bottom plate 3 to move down, so that stationary contact 2 and movable contact 4 disconnect.

With reference to Fig. 1, Fig. 3 and Fig. 5, in some embodiments, the drive device 7 includes connecting rod 74, the connecting rod 74 Upper end be upward through the bottom plate 3, pad 77 is provided with the bottom plate 3, the pad 77 is located at the connecting rod 74 Top and the bottom plate 3 between, the upper end of the elastic component 6 is against the lower surface of the fuse 5, the elastic component 6 lower end is against on the pad 77.Make the Stability Analysis of Structures of relay.

Preferably, the top of the connecting rod 74 is provided with jump ring 76, and the pad 77 is located at the jump ring 76 and the bottom plate Between 3.Pass through the locating shim 77 of jump ring 76, it is possible to achieve effective positioning of pad 77.

In other embodiments of the present invention, drive device 7 includes connecting rod 74, and the upper end of connecting rod 74 is upward through bottom plate 3, The top of connecting rod 74 is provided with jump ring 76, and pad 77 is provided between jump ring 76 and bottom plate 3, and the upper end of elastic component 6 is against The lower surface of fuse 5, the lower end of elastic component 6 are against on pad 77.

Specifically, as shown in figures 1 to 6, bottom plate 3 is provided with via 33, and the upper end of connecting rod 74 passes through via 33, and The end of connecting rod 74 through via 33 is provided with jump ring 76 and pad 77, and the upper end of elastic component 6 is against the following table of fuse 5 Face, the lower end of elastic component 6 are against on pad 77.Thus, jump ring 76 can link together connecting rod 74 and bottom plate 3, Meanwhile set pad 77 to reduce the pressure that jump ring 76 is subject between the upper surface of jump ring 76 and bottom plate 3, so as to While using 76 clamping connecting rod 74 of jump ring, to improve the service life of jump ring 76.

Preferably, connecting rod 74 is provided with defining flange 741, and buffer spring 78 is provided between defining flange 741 and bottom plate 3, And buffer spring 78 is enclosed on the outside of connecting rod 74, when connecting rod 74 moves up, buffer spring 78 can slow down the He of connecting rod 74 The speed that bottom plate 3 moves up, reduce impulsive force when movable contact 4 contacts with stationary contact 2, thus, it is possible to reduce dynamic touch Abrasion between point 4 and stationary contact 2, improve the service life of relay 100.

Preferably, as shown in figure 1, being arranged with the sheath for bottom plate 3 and connecting rod 74 to be separated on the outer peripheral face of connecting rod 74 34, so, it can be separated between the inner peripheral surface of via 33 and the upper end of connecting rod 74 by sheath 34.Thus, when connecting rod 74 When being moved up and down under the drive of iron core 73, sheath 34 can avoid connecting rod 74 from being contacted with the direct friction of bottom plate 3, so as to subtract Few abrasion of the bottom plate 3 to connecting rod 74, improve the service life of connecting rod 74.Further, sheath is insulating sheath.

Relay 100 below with reference to Fig. 1-Fig. 6 descriptions according to a specific embodiment of the invention.

Reference picture 1, relay 100 include shell 1, stationary contact 2, bottom plate 3, movable contact 4, fuse 5, elastic component 6 With drive device 7, wherein, stationary contact 2 is located on shell 1, bottom plate 3, movable contact 4, fuse 5, elastic component 6 with And a part of drive device 7 is each provided in shell 1.

Specifically, as shown in figure 1, shell 1 includes housing 11, supporting plate 12 and connected unit 13, the bottom-open of housing 11, Stationary contact 2 passes through the roof of housing 11, and supporting plate 12 closes the bottom of housing 11, and connected unit 13 is connected to supporting plate 12 and shell Between body 11.Preferably, housing 11 is ceramic shell, and the arc-extinguishing gases such as hydrogen or helium are filled with shell 1.

As shown in fig. 6, formed with two stopper slots 31 to lower recess, the bottom of each stopper slot 31 on the upper surface of bottom plate 3 Wall is respectively formed on multiple heat emission holes 32 for running through bottom plate 3 along the vertical direction；The lower surface of movable contact 4 is formed with downwardly projecting Spacing preiection 41, the soldering of movable contact 4 is on bottom plate 3 and spacing preiection 41 coordinates in stopper slot 31.In bottom plate 3 The heart is formed further with the via 33 run through along the vertical direction, and sheath 34 is interference fitted in via 33.Preferably, bottom plate 3 be ceramic bottom board, and sheath 34 is protective metal shell.

Fuse 5 is formed as banding, and the middle part of fuse 5 is provided with fuse part 51.The left and right ends soldering of fuse 5 is the bottom of at On the upper surface of plate 3, and movable contact 4 pushes down the edge of the left and right ends of fuse 5.Elastic component 6 is located at the He of fuse 5 Between bottom plate 3, and the lower end of elastic component 6 is against on bottom plate 3, upper end is against the middle part of fuse 5.Preferably, elastic component 6 adjustable spring to insulate.

Drive device 7 includes sleeve 71, limited post 72, iron core 73, connecting rod 74 and back-moving spring 75, sleeve 71 it is upper End is connected with the lower surface of supporting plate 12, and limited post 72 and iron core 73 are sequentially arranged in sleeve 71 from the top down, limited post 72 Upper end be fixedly connected with supporting plate 12；Between the connection limited post 72 of back-moving spring 75 and iron core 73；The lower end of connecting rod 74 with Iron core 73 is connected, upper end is connected through the via 33 on bottom plate 3 with bottom plate 3 by jump ring 76, jump ring 76 and bottom plate 3 Between be further provided with pad 77；The middle part of connecting rod 74 is provided with defining flange 741, and buffer spring 78 is set in connecting rod 74 Outside, and the lower end of buffer spring 78 is against on defining flange 741, upper end is against the lower surface of bottom plate 3.Further, The outside of iron core 73 is arranged coil.

When drive device 7 and bottom plate 3 are located at open position, iron core 73 can in induced field caused by coil the company of drive Bar 74, bottom plate 3 and movable contact 4 move up, meanwhile, iron core 73 compression reseting spring 75 and buffer spring 78 successively, Until movable contact 4 contacts with stationary contact 2, bottom plate 3 is located at conduction position；When movable contact 4 and stationary contact 2 turn on, protect Dangerous silk 5 is connected by movable contact 4 with external circuit, for protecting external circuit, when current overload in external circuit or it is short-circuit when, protect Dangerous silk 5 is fused, and now, adjustable spring pops up, and the both ends of the fuse 5 after fusing are flicked, and avoids fuse 5 both ends contact again, so as to be further ensured that the safety of circuit.

Relay 100 according to embodiments of the present invention, the fuse 5 after fusing is automatically springed open by using adjustable spring, is prevented Fuse 5 contacts again, so that relay 100 is more safe and reliable.

In the description of the invention, it is to be understood that term " " center ", " on ", " under ", "left", "right", The orientation or position relationship of the instruction such as " vertical ", " level ", " top ", " bottom ", " interior ", " outer " be based on Orientation shown in the drawings or position relationship, it is for only for ease of description description of the invention and simplified, rather than instruction or hint institute The device or element of finger must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this hair Bright limitation.

In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relatively important Property or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be with Express or implicitly include one or more this feature.In the description of the invention, " multiple " are meant that two Or two or more, unless otherwise specifically defined.

In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can To be mechanical connection or electrical connection, communication can also be；Can be joined directly together, intermediary can also be passed through It is indirectly connected, can is connection or the interaction relationship of two elements of two element internals.For the common skill of this area For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.

In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature Second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or It is merely representative of fisrt feature level height and is higher than second feature.Fisrt feature second feature " under ", " lower section " and " under Face " 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, reference term " one embodiment ", " some embodiments ", " example ", " tool The description of body example " or " some examples " etc. means to combine specific features, structure, material that the embodiment or example describe Material or feature are contained at least one embodiment or example of the present invention.In this manual, to the signal of above-mentioned term Property statement be necessarily directed to identical embodiment or example.Moreover, specific features, structure, material or the spy of description Point can combine in an appropriate manner in any one or more embodiments or example.In addition, in the case of not conflicting, Those skilled in the art can be by the different embodiments or example described in this specification and the spy of different embodiments or example Sign is combined and combined.

Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Do not departing from In the case of the principle and objective of the present invention a variety of change, modification, replacement and modification, this hair can be carried out to these embodiments Bright scope is limited by claim and its equivalent.

Claims (16)

1. A kind of 1. relay, it is characterised in that including：

   Shell, the shell are provided with stationary contact group, and the stationary contact group includes the stationary contact of two mutually insulateds；

   Bottom plate, the bottom plate are provided with movable contact group corresponding with the stationary contact group, and the movable contact group is dynamic tactile including two Point, conducted by fuse between two movable contacts of at least one movable contact group, the fuse is arranged on bottom plate On, conduction position and the movable contact group and the stationary contact that the bottom plate contacts in the movable contact group with the stationary contact group It is movably arranged between the open position of point group separation in the shell, when the bottom plate is located at conduction position, the stationary contact Conducted between two stationary contacts of point group；

   Elastic component, the elastic component are arranged on the bottom plate, and in the blown fuse elastic component flick it is described Fuse；

   Drive device, the drive device are connected with the bottom plate to drive the bottom plate in the conduction position and the disconnection Moved between position.
2. 2. relay according to claim 1, it is characterised in that the elastic component is located at the fuse and the bottom Between plate, the upper end of the elastic component is against on the lower surface of the fuse and lower end is against on the bottom plate, and the bullet Property part often in the state compressed.
3. 3. relay according to claim 2, it is characterised in that the both ends of the fuse are fixed with the bottom plate to be connected Connect, gap is left between the center section of the fuse and the bottom plate, the elastic component is arranged in the gap, institute The upper end for stating elastic component is against the center section of the fuse.
4. 4. relay according to claim 2, it is characterised in that the drive device includes connecting rod, the connecting rod Upper end is upward through the bottom plate, and pad is provided with the bottom plate, and the pad is located at the top of the connecting rod and the bottom Between plate, the upper end of the elastic component is against the lower surface of the fuse, and the lower end of the elastic component is against on the pad.
5. 5. relay according to claim 4, it is characterised in that the top of the connecting rod is provided with jump ring, the pad Piece is between the jump ring and the bottom plate.
6. 6. relay according to claim 4, it is characterised in that be arranged with and be used for institute on the outer peripheral face of the connecting rod State the sheath that bottom plate and the connecting rod separate.
7. 7. according to the relay any one of claim 1-6, it is characterised in that the fuse is in the form of sheets.
8. 8. according to the relay any one of claim 1-6, it is characterised in that the bottom plate is ceramic bottom board.
9. 9. according to the relay described in claim 1-6 any one, it is characterised in that the elastic component is insulated spring.
10. 10. according to the relay any one of claim 1-6, it is characterised in that the both ends of the fuse and institute State movable contact and distinguish soldering on the bottom plate.
11. 11. according to the relay any one of claim 1-6, it is characterised in that the movable contact pushes down the guarantor The edge of dangerous silk.
12. 12. relay according to claim 1, it is characterised in that the bottom plate is provided with stopper slot, described dynamic tactile The lower surface of point is provided with spacing preiection, and the spacing preiection coordinates in the stopper slot.
13. 13. according to the relay any one of claim 1-6 and 12, it is characterised in that the bottom plate is provided with Heat emission hole corresponding with the movable contact, the heat emission hole penetrate the bottom plate.
14. 14. relay according to claim 1, it is characterised in that the shell includes：

    Housing, the bottom-open of the housing；

    Supporting plate, the supporting plate are located at below the housing to close the housing bottom；

    Connected unit, the connected unit are connected with the housing and the supporting plate respectively.
15. 15. relay according to claim 14, it is characterised in that the housing is ceramic shell.
16. 16. relay according to claim 1, it is characterised in that be filled with hydrogen or helium in the shell.