CN207474318U - A kind of auxiliary switch of switching device - Google Patents

Abstract

A kind of auxiliary switch of switching device, including housing, the contact system and transmission device being located in housing, switching device has first, second state, transmission device includes resetting spring, guide rod and actuating device of the spring, guide rod is located in housing, actuating device of the spring is located in housing and is connect with guide rod, resetting spring is located on actuating device of the spring, when switching device is acted from first state to the second state, the energy storage of driving spring driving device and actuating device of the spring are driven to cross dead-centre position after release energy, drive leader acts, by guide rod band movable contact system the second position is moved to from first position；When switching device is from the second state motion to first state, resetting spring driving spring driving device energy storage, and actuating device of the spring is driven to after crossing dead-centre position and releases energy, drive leader action, and first position is moved to from the second position by guide rod band movable contact system.Be conducive to quickly cut-off electric arc, extend the contact service life；Contact is by property.

Description

A kind of auxiliary switch of switching device

Technical field

The utility model belongs to low voltage electrical apparatus technology field, and in particular to a kind of auxiliary switch of switching device.

Background technology

Switching device such as frame circuit breaker, breaker of plastic casing and contactor etc. are commonly equipped with auxiliary switch, by assisting The opening and closing state of switch reflection switching device.Auxiliary switch includes housing, the contact system being arranged in housing and is used for It receives（Receive）The action of switching device and use actuating contact system action transmission device.

As is known in the industry, aforementioned frame circuit breaker has "on" position and gate-dividing state simultaneously can be in two shapes of splitting or integrating lock The function of switching between state, the aforementioned drive device of the structural system of auxiliary switch are driven by the driving spindle of the main contact of breaker And so that aforementioned contact system switches between separation point position or closing position, reach the divide-shut brake shape of reflection frame circuit breaker The purpose of state.

Since the main contact quality of breaker is larger, and speed during separating brake, thus in end or the separating brake of closing a floodgate At the end of often be not intended to occur but objectively unavoidable larger collision reaction because collision generates, when serious, rebound Stroke reaches with 1/3rd of main contact total kilometres even biggers, and it also occur that bounce gradually becomes after first rebound Small multiple descending rebound.During main contact rebound, the driving spindle of main contact also can generate reversion therewith rebounding. In this case, the shaft-driven auxiliary switch of acceptor can equally generate the reciprocating motion of auxiliary contact, auxiliary contact occur more The situation of secondary contact so as to seriously affect the auxiliary contact service life for shortening auxiliary switch, causes what is counted using auxiliary switch Mistake or the mistake that isloation state is closed using auxiliary switch acquisition.Further, since breaker main contact quality is big, acceleration is relatively Small, driving the acceleration of auxiliary switch, also corresponding smaller thus slower main contact acceleration makes the auxiliary contact of auxiliary switch It is slow to cut-off speed, is unfavorable for fast arc extinction, and arc extinguishing speed can undermine the auxiliary contact service life or even slowly under DC high voltage Auxiliary head scaling loss can be caused because cannot cut-off electric arc due to（Ablation）.Aforementioned technical problem suffers from industry and it is expected for a long time It is addressed, technical solution described below generates in this background.

Invention content

The task of the utility model is that providing a kind of movement velocity for helping to make auxiliary contact breaks away from switching device On/off switch speed influences and uses quick-speed turning on-off electric arc and improve the auxiliary contact service life and ensure the switch of contact reliability The auxiliary switch of device.

What the task of the utility model was performed by, a kind of auxiliary switch of switching device including housing, is arranged on Contact system and transmission device in housing, the switching device have first state and the second state and in the first shapes It is acted between state and the second state, the transmission device receives the action of switching device and activates the contact system anti- Reflect the first position of the first state of switching device and the second position of second state in reflection switching device Between act, the transmission device includes resetting spring, guide rod and actuating device of the spring, and guide rod is movably arranged at the shell In vivo, actuating device of the spring is similarly disposed in housing and is connect with guide rod, and resetting spring is arranged on actuating device of the spring, When the switching device is acted from the first state to second state, drive the actuating device of the spring energy storage and Actuating device of the spring is driven to cross dead-centre position after, which releases energy, and the guide rod is driven to act, The contact system is driven to move to the second position from the first position by guide rod；When the switching device is from described When two-state moves to the first state, the resetting spring driving spring driving device energy storage, and spring driving dress It puts after being driven to and crossing dead-centre position, which releases energy, drive leader action, by guide rod band moving contact system System moves to first position from the second position.

In a specific embodiment of the utility model, the housing is with a driving device accommodating chamber and always Body of rod accommodating chamber, the guide rod include the body of rod always of the contact system action and one is driven to be used to drive for the spring The U-shaped body of rod of dynamic device connection, straight-bar body are prolonged by the middle position of the U-shaped body of rod towards the side of the straight-bar body accommodating chamber Composition is stretched, which is contained in the straight-bar body accommodating chamber and is slidably matched with straight-bar body accommodating chamber, and the U-shaped body of rod accommodates It is slidably matched in the driving device accommodating chamber and with driving device accommodating chamber.

In another specific embodiment of the utility model, the U-shaped body of rod has one first arm and one second Arm, the actuating device of the spring are nested with bar including center rod, first connecting rod, second connecting rod, extension spring and resetting spring, Center rod, first connecting rod, second connecting rod and extension spring are arranged in the driving device accommodating chamber, first connecting rod, second Connecting rod is arranged symmetrically in relation to each other, and one end of first connecting rod and one end of second connecting rod and one end of center rod are coaxially cut with scissors It connects, the other end of first connecting rod is slidably matched by first connecting rod axis pin and first arm, and the other end of second connecting rod leads to It crosses second connecting rod axis pin to be slidably matched with second arm, has a center rod limiting block in the other end composition of center rod Prominent, extension spring is connected between first, second pitman pin, and resetting spring is nested with one end of bar and center rod limits Position gear is prominent to be fixed, and the other end that resetting spring is nested with bar passes through the side wall of the housing to be stretched over the driving device accommodating chamber Outer and composition has a push plate, and the resetting spring, which is nested with, to be nested in the resetting spring on bar, and the one of the resetting spring End is supported on housing back on the wall body of the side of driving device accommodating chamber, and the other end is supported in push plate.

In another specific embodiment of the utility model, the U-shaped body of rod first arm back to described The side of second arm is extended with a first connecting rod axis pin matching seat, and forms on the first connecting rod axis pin matching seat and to have one the One pitman pin sliding groove, and in the second arm back to the side of the first arm and in the position corresponding to first connecting rod axis pin matching seat It puts and is extended with a second connecting rod axis pin matching seat, and composition has a second connecting rod axis pin on the second connecting rod axis pin matching seat Sliding groove, first, second pitman pin sliding groove correspond to each other, the first connecting rod axis pin and first connecting rod pin slide slot It is slidably matched, the second connecting rod axis pin is slidably matched with second connecting rod pin slide slot, and one end of the extension spring is hung It puts on first connecting rod axis pin, and the other end is hung on second connecting rod axis pin.

It is hinged in the first connecting rod and the center rod in another specific embodiment of the utility model One end and being formed towards upper side has a first connecting rod to avoid step surface, the end that step surface is avoided in the first connecting rod is opened Equipped with a first connecting rod hinge hole, in the second connecting rod and the hinged one end of the center rod and the side structure under Cheng Youyi second connecting rods avoid face, and the end that step surface is avoided in the second connecting rod offers a second connecting rod hinge hole, and first Connecting rod avoids step surface and second connecting rod avoids step surface each other to facing to coordinate, and by center rod hinging pin shaft successively Through second connecting rod hinge hole and first connecting rod hinge hole by one end of the first connecting rod, one end and the center of second connecting rod One end of connecting rod is coaxially hinged.

In specific embodiment there are one the utility model, in the long side side of the straight-bar body accommodating chamber of the housing To opposite side two cavity walls on and to have plural number to partition wall perpendicular to the state interval of cavity wall is extended, separate per a pair of The body of rod always is formed between wall and is oriented to sliding cavity, the straight-bar body is oriented to sliding cavity with straight-bar body and is slidably matched, and each two is adjacent A pair of of partition wall between space be configured to contact cavities, the contact system is arranged in contact cavities.

In the utility model more and in a specific embodiment, the contact system includes plural number to being fixed on State static contact in contact cavities and a plurality of with the matched moving contact of static contact, formed on the straight-bar body have it is several with The corresponding moving contact accommodating chamber in position of contact cavities, the moving contact accommodating chamber are penetrated through from the side of straight-bar body to opposite side, institute The moving contact stated includes the first movable contact spring, the second movable contact spring, partition, the first movable contact spring spring and the second movable contact spring spring, partition Corresponding between first, second movable contact spring, the both ends of the first movable contact spring back to the side of the second movable contact spring are respectively fixed with one first Movable contact, the both ends of the second movable contact spring back to the side of the first movable contact spring are respectively fixed with one second movable contact, the first movable contact spring bullet Spring is supported between the middle part of the side of partition and the middle part of the first movable contact spring, and the second movable contact spring spring-loaded is in the another of partition Between the middle part of side and the middle part of the second movable contact spring, first, second movable contact spring and partition are accommodated corresponding to the moving contact The position of chamber is arranged on the straight-bar body, wherein：First movable contact of the first movable contact spring is with being set in the contact cavities And a pair of both sides that be symmetrically distributed in straight-bar body described in static contact cooperation and be configured to normally closed auxiliary contact, second is dynamic Second movable contact of contact and a pair that is being arranged on adjacent contact intracavitary and being equally symmetrically distributed in the both sides of straight-bar body are quiet Contacts mates and be configured to normally opened auxiliary magnet.

The utility model so that in a specific embodiment, the middle part of first movable contact spring and corresponding to The position of the first movable contact spring spring, which is formed, one first movable contact spring arch, at the middle part of second movable contact spring and in correspondence Being formed in the position of the second movable contact spring spring has one second movable contact spring arch, encircles by the first movable contact spring and makes the first movable contact spring Shape in Ω shapes, encircle by the second movable contact spring and make the shape of the second movable contact spring in Ω shapes, in the partition towards described the The side of one movable contact spring and corresponding to the first movable contact spring spring position form have one first movable contact spring spring-loaded Round platform, and partition has towards the side of second movable contact spring and in the position composition corresponding to the second movable contact spring spring One second movable contact spring spring-loaded round platform, one end of the first movable contact spring spring towards partition are supported on the first movable contact spring spring-loaded On round platform, one end of the second movable contact spring spring towards partition is supported on the second movable contact spring spring-loaded round platform.

In the utility model again more and in a specific embodiment, the U-shaped body of rod has one first arm and one the Two arms, the actuating device of the spring are nested with bar, center rod, including center rod, first, second compression spring and resetting spring One compression spring and the second compression spring are arranged in the driving device accommodating chamber, and the first compression spring and the second compression spring are mutually symmetrical and set It puts, one end of the first compression spring is supported on the first compression spring supporting head, and the other end of the first compression spring is supported on the bearing of the second compression spring On head, one end of the second compression spring is supported on third compression spring supporting head, and the other end of the second compression spring is supported on the 4th compression spring branch On taking the lead, the first compression spring supporting head and one end of third compression spring supporting head and center rod are coaxially hinged, the bearing of the second compression spring Head is hinged with first arm, and the 4th compression spring supporting head is hinged with second arm, is formed in the other end of center rod There is a center rod limiting block to dash forward, one end of resetting spring loop bar and center rod limiting block are dashed forward fixation, and resetting spring is nested with The other end of bar passes through the side wall of the housing to extend to outside the driving device accommodating chamber, and composition has a push plate, institute The resetting spring stated is nested on the resetting spring loop bar, and one end of the resetting spring is supported on housing and holds back to driving device Receive chamber side wall body on, the other end is supported in push plate.

The utility model again so that a specific embodiment in, on first arm of the U-shaped body of rod with The state for being parallel to the long side direction of the first arm offers one first hinge cavity, and on second arm of the U-shaped body of rod One second hinge cavity is offered with the state for being parallel to the long side direction of the second arm, second hinge cavity is opposite with the first hinge cavity Should, the second compression spring supporting head probes into the first hinge cavity and is cut with scissors by the first hinging pin shaft of compression spring supporting head and the first arm It connects, the 4th compression spring supporting head probes into the second hinge cavity and cut with scissors by the second hinging pin shaft of compression spring supporting head and the second arm It connects.

Technical solution provided by the utility model has technical effect that：By setting actuating device of the spring, when switch fills When putting action, make actuating device of the spring energy storage, in thermal energy storage process, the dynamic/static contact of auxiliary switchgear does not move, spring Driving device is driven to cross dead-centre position after release energy, drive leader movement is closed normally opened auxiliary contact, normally closed auxiliary Contact is helped to open；It during reply, is driven by resetting spring, makes actuating device of the spring energy storage, in thermal energy storage process, auxiliary switchgear Dynamic/static contact do not move, actuating device of the spring is driven to cross dead-centre position after release energy, drive leader movement, make Normally opened auxiliary contact is replied, and normally closed auxiliary contact is replied.Due to being discharged using the energy of actuating device of the spring come band moving contact system System movement, make auxiliary switch the contact i.e. movement velocity of auxiliary contact break away from breaker main contact divide-shut brake speed shadow It rings, and since the contact quality of auxiliary switch is smaller, acceleration is larger, and contact cut-offs speed, is conducive to quickly open Arc is powered off, extends the contact service life.And there is actuating device of the spring, in the main contact spring of breaker, as long as instead The stroke of bullet is no more than the dead-centre position of actuating device of the spring, and the contact of auxiliary switch would not generate multiple-contact, ensure auxiliary Help the contact reliability of switch.

Description of the drawings

Fig. 1 is the first embodiment schematic diagram of the auxiliary switch of the utility model switching device.

Fig. 2 is schematic diagram when actuating device of the spring shown in FIG. 1 is located at dead-centre position.

Fig. 3 completes transformed schematic diagram for actuating device of the spring shown in FIG. 1.

Fig. 4 is schematic diagrames of the Fig. 1 to housing shown in Fig. 3.

Fig. 5 is detailed structure views of the Fig. 1 to guide rod shown in Fig. 3.

Fig. 6 a are schematic diagrames of the Fig. 1 to the first static contact of the structural system of static contact shown in Fig. 3.

Fig. 6 b are schematic diagrames of the Fig. 1 to the second static contact of the structural system of static contact shown in Fig. 3.

Fig. 7 a are structure charts of the Fig. 1 to moving contact shown in Fig. 3.

Fig. 7 b are the schematic diagram that Fig. 1 is fitted to each other to dynamic and static contact shown in Fig. 3.

Fig. 8 is schematic diagrames of the Fig. 1 to the center rod of the structural system of spring energy storage device shown in Fig. 3.

Fig. 9 is detailed structure views of the Fig. 1 to first connecting rod shown in Fig. 3.

Figure 10 is the second embodiment schematic diagram of the auxiliary switch of the utility model switching device.

Figure 11 is schematic diagram when actuating device of the spring shown in Fig. 10 is located at dead-centre position.

Figure 12 completes transformed schematic diagram for actuating device of the spring shown in Fig. 10.

Figure 13 is the detailed structure view of guide rod shown in Fig. 10.

Figure 14 is the detailed structure view of a center rod of the structural system of actuating device of the spring shown in Fig. 10.

Figure 15 is the detailed structure view of the first compression spring supporting head shown in Figure 10 and Figure 11.

Figure 16 is the detailed structure view of the second compression spring supporting head shown in Figure 10 and Figure 11.

Specific embodiment

In order to which the technical essence of the utility model and advantageous effect is more clearly understood, applicant is below with reality The mode for applying example elaborates, but to the description of embodiment is not the limitation to the utility model, any foundation The made only formal but not substantive equivalent transformation of the utility model design is regarded as the utility model Technical solution scope.

The concept of every directionality for being related to upper, lower, left, right, front and rear or directionality is all in the following description For the location of the figure described state, thus it cannot be understood as to technology provided by the utility model Scheme is particularly limited to.

Embodiment 1：

Fig. 1 to Fig. 3 is referred to, the housing 1 of the structural system of the auxiliary switch of the utility model switching device is shown, sets Put contact system and transmission device in housing 1, aforementioned switching device have first state and the second state and It is acted between first state and the second state, aforementioned transmission device receives（Also can claim " to receive "）The action and cause of switching device It moves aforementioned contact system to act between the first position and the second position, the contact system reflects at first position to be opened The first state of device is closed, the contact system reflects the second state of switching device at the second position.

The switching device of the utility model has the main contact of major loop, and the sound of main contact is driven by main axis The separation of contact and closure, the separation of main contact or the separating brake of closed pair inductive switch or combined floodgate i.e. described in the utility model first State or the second state, in the utility model, switch separating brake can be first state, and switch, which closes a floodgate, then corresponds to the second state, If switch separating brake corresponds to the second state, the corresponding first state of combined floodgate is switched, works as main axis, main contact closes a floodgate or during separating brake, Main shaft acts on auxiliary switchgear so that the moving contact 4 inside auxiliary switchgear is acted with respect to static contact 2, auxiliary switch Include in device by dynamic/static contact to the normally opened auxiliary contact that forms and equally by dynamic/static contact to the normally closed auxiliary contact that forms. In the utility model, normally opened auxiliary contact is opened, and normally closed auxiliary contact closure can correspond to the first position of contact system, often Auxiliary contact closure is opened, normally closed auxiliary contact opening then corresponds to the second position of contact system；Normally opened auxiliary contact is opened, normally closed Auxiliary contact is closed the second position that can correspond to contact system, and normally opened auxiliary contact is closed, and it is then right that normally closed auxiliary contact is opened Answer the first position of contact system；The contact system action of auxiliary switchgear so that normally opened auxiliary contact is closed, normally closed auxiliary Contact is opened or normally opened auxiliary contact is returned to opening, and normally closed auxiliary contact is returned to closure.

Technical essential as technical solution provided by the utility model：Aforementioned transmission device includes resetting spring 6, leads Bar 3 and actuating device of the spring 5, guide rod 3 are movably arranged in aforementioned housing 1, and actuating device of the spring 5 is similarly disposed at housing 1 Interior and connect with guide rod 3, resetting spring 6 is arranged on actuating device of the spring 5, when aforesaid switchgear is from aforementioned first state When action is to aforementioned second state, 5 energy storage of switching device driving spring driving device and actuating device of the spring is driven to more After crossing dead-centre position, which releases energy, and aforementioned guide rod 3 is driven to act, and aforementioned contact is driven by guide rod 3 System moves to the aforementioned second position from aforementioned first position；And when aforesaid switchgear is from aforementioned second state motion to aforementioned During first state, aforementioned 6 driving spring driving device of resetting spring, 5 energy storage, and actuating device of the spring 5 is driven to and crosses Behind dead-centre position, which releases energy, and drive leader 3 acts, by guide rod 3 with movable contact system from second It puts and moves to first position.

It refers to Fig. 5 and combines Fig. 1 to Fig. 3, aforementioned housing 1 has a driving device accommodating chamber 12 and the always body of rod Accommodating chamber 11（Fig. 1 to Fig. 3 shows）, aforementioned guide rod 3 includes the body of rod always 31 and one of aforementioned contact system action is driven to be used In the U-shaped body of rod 32 for the connection of aforementioned actuating device of the spring 5, straight-bar body 31 is held by the aforementioned U-shaped body of rod 32 towards aforementioned straight-bar body The middle position extension in the i.e. left side in side of chamber 11 received is formed, the straight-bar body 31 be contained in aforementioned straight-bar body accommodating chamber 11 and It is slidably matched with straight-bar body accommodating chamber 11, the U-shaped body of rod 32 is contained in aforementioned driving device accommodating chamber 12 and is filled with driving Accommodating chamber 12 is put to be slidably matched.

Fig. 4 is referred to and still with Fig. 1 to Fig. 3, in the phase of the long side direction of the straight-bar body accommodating chamber 11 of aforementioned housing 1 There is plural number to partition wall 111, tool in two cavity walls of side and with perpendicular to the state interval of cavity wall and symmetrically extended For body, it is respectively extended with partition wall 111 before and after the straight-bar body accommodating chamber 11 in cavity wall, the partition wall 111 on anterior cavity wall is with after Partition wall 111 in cavity wall correspondence each other, that is, form a pair of of partition wall 111, in the present embodiment with three pairs of partition walls 111, it is oriented to sliding cavity 1111 per the body of rod always is formed between a pair of partition wall 111（Fig. 4 is marked）, aforementioned straight-bar body 31 with it is straight The body of rod is oriented to sliding cavity 1111 and is slidably matched, and the space between each two adjacent pairs partition wall 111 is configured to contact cavities 1112, The present embodiment is four, and the dynamic and static contact 4,2 of the structural system of aforementioned contact system is arranged in contact cavities 1112.Pass through Straight-bar body 31 and straight-bar body are oriented to the cooperation of sliding cavity 1111 i.e. with the cooperation of partition wall 111 and passing through the aforementioned U-shaped body of rod 32 Two arms be below it is also mentioned that the first arm 321, the second arm 322 and driving device accommodating chamber 12 cooperation and realize to leading The slide-and-guide of bar 3.

Refer to Fig. 7 a and Fig. 7 b and with reference to Fig. 5, aforementioned contact system includes plural number to being fixed on aforementioned contact cavities Static contact 2 and a plurality of and 2 matched moving contact 4 of static contact in 1112 are formed to have and be opened on aforementioned straight-bar body 31 Equipped with the several and corresponding moving contact accommodating chamber 312 in 1112 position of contact cavities, the present embodiment is two, the moving contact accommodating chamber 312 penetrate through from the side of straight-bar body 31 to opposite side, i.e., by taking location status shown in Fig. 5 as an example, moving contact accommodating chamber 312 is from straight-bar The front side of body 32 is penetrated through to rear side, and it is dynamic that aforementioned moving contact 4 includes the first movable contact spring 41, the second movable contact spring 42, partition 43, first 44 and second movable contact spring spring 45 of contact spring, partition 43 correspond between first, second movable contact spring 41,42, the first movable contact spring 41 are respectively fixed with one first movable contact 411 back to the both ends of the side of the second movable contact spring 42, and the second movable contact spring 42 is dynamic back to first The both ends of the side of contact 41 are respectively fixed with one second movable contact 421, and the first movable contact spring spring 44 is supported on the side of partition 43 Middle part and the first movable contact spring 41 middle part between, the second movable contact spring spring 45 is supported on the middle part of the opposite side of partition 43 and the Between the middle part of two movable contact springs 42, first, second movable contact spring 41,42 and partition 43 are corresponding to aforementioned moving contact accommodating chamber 312 position is arranged on aforementioned straight-bar body 31.Wherein：First movable contact 411 of the first movable contact spring 41 is aforementioned with being set to The static contact 2 that a pair of both sides that are in contact cavities 1112 and being symmetrically distributed in straight-bar body 31 is aforementioned coordinates and is configured to normally closed Auxiliary contact, the second movable contact 421 of the second movable contact spring 42 with it is being arranged in adjacent contact chamber 1112 and symmetrical point similary A pair of of the static contact 2 for being distributed in the both sides of straight-bar body 31 coordinates and is configured to normally opened auxiliary magnet.

By the signal of Fig. 1 to Fig. 3 and Fig. 5 it is found that first, second aforementioned movable contact spring 42 is arranged in together with partition 43 Aforementioned moving contact chamber 312, such as the front side of driven contact cavities 312 penetrate or the rear side of driven contact cavities 312 penetrates, first, The middle part of second movable contact spring 41,42 is located in moving contact chamber 312, and both ends then probe into moving contact chamber 312, so as to first, second Moving contact 411,421 is stretched over outside moving contact chamber 312 and is matched with aforementioned static contact 2.

Please emphasis see Fig. 7 a, at the middle part of aforementioned first movable contact spring 41 and corresponding to aforementioned first movable contact spring spring 44 Position form and there is one first movable contact spring to encircle 412, at the middle part of aforementioned second movable contact spring 42 and dynamic corresponding to aforementioned second The position of contact spring 45, which is formed, has one second movable contact spring to encircle 422, makes the first movable contact spring 41 by the first movable contact spring arch 412 Shape is in Ω shapes, makes the shape of the second movable contact spring 42 in Ω shapes by the second movable contact spring arch 422, in aforementioned partition 43 before Stating the side of the first movable contact spring 41 and being formed in the position corresponding to aforementioned first movable contact spring spring 44 has one first movable contact spring Spring-loaded round platform 431, and partition 43 is towards the side of aforementioned second movable contact spring 42 and corresponding to aforementioned second movable contact spring The position of spring 45, which is formed, one second movable contact spring spring-loaded round platform 432, and the first movable contact spring spring 44 is towards the one of partition 43 End is supported on the first movable contact spring spring-loaded round platform 431, and one end of the second movable contact spring spring 45 towards partition 43 is supported on the On two movable contact spring spring-loaded round platforms 432.It is used on certain partition 43 for the first movable contact spring spring 44 and the second movable contact spring bullet The structure of spring bearing is not limited to the mode of above-mentioned round platform, also can and to open up movable contact spring spring-loaded respectively recessed for the both sides of partition 43 One end of hole, the first movable contact spring spring 44 and the second movable contact spring spring 45 is supported on aforementioned movable contact spring spring-loaded pit respectively It is interior.

Fig. 1 to Fig. 5 and Fig. 8 are seen to Fig. 9, and applicant is to the structural system of the auxiliary switch of the utility model switching device The first example structure of actuating device of the spring 5 illustrate.

The aforementioned U-shaped body of rod 32 has one first arm 321 and one second arm 322, during aforementioned actuating device of the spring 5 includes Heart connecting rod 51, first connecting rod 52, second connecting rod 53, extension spring 54 and resetting spring are nested with bar 58, and center rod 51, first connects Bar 52, second connecting rod 53 and extension spring 54 are arranged in aforementioned driving device accommodating chamber 12, first connecting rod 52, second connecting rod 53 It is arranged symmetrically in relation to each other, and one end of first connecting rod 52 and one end of second connecting rod 53 and one end of center rod 51 are coaxially cut with scissors It connects, the other end of first connecting rod 52 is slidably matched by first connecting rod axis pin 522 and the first aforementioned arm 321, second connecting rod 53 The other end be slidably matched by second connecting rod axis pin 532 and the second aforementioned arm 322, center rod 51 the other end form There is a center rod limiting block to dash forward 55, extension spring 54 is connected between first, second aforementioned pitman pin 522,532, multiple Position spring is nested with one end of bar 58 and center rod limiting block and dashes forward 55 fixations, and the other end that resetting spring is nested with bar 58 passes through in advance It is located on the side wall of aforementioned housing 1 and is nested with bar sliding eye 121（Fig. 4 shows）Be stretched over aforementioned driving device accommodating chamber 12 it is outer and Forming has a push plate 57 driven for the breaker main shaft of breaker, and aforementioned resetting spring 6 is nested in foregoing reset spring It is nested on bar 58, one end of the resetting spring 6 is supported on housing 1 back on the wall body of the side of driving device accommodating chamber 12, separately One end is supported in push plate 57.

According to the signal of Fig. 1 and with reference to professional general knowledge, aforementioned extension spring 54 is preferably a pair of, that is, has two stretchings Spring 54, wherein the both ends of one are fixed in the upper end being nested between first, second pitman pin 522,532, and it is another Root is then nested with the lower end between first, second pitman pin 522,532.Applicant it should be noted that：Aforementioned stretching bullet Spring 54 can also be one, an extension spring 54 be nested with upper end between first, second pitman pin 522,532 or It is nested with the lower end between first, second pitman pin 522,532.

As shown in Figure 5, it is extended in the side of aforementioned first arm 321 back to aforementioned second arm 322 of the aforementioned U-shaped body of rod 32 One first connecting rod axis pin matching seat 3211, and composition has a first connecting rod axis pin on the first connecting rod axis pin matching seat 3211 Sliding groove 32111, and in the second arm 322 back to the side of the first arm 321 and corresponding to first connecting rod axis pin matching seat 3211 position is extended with a second connecting rod axis pin matching seat 3221, and is formed on the second connecting rod axis pin matching seat 3221 There is a second connecting rod pin slide slot 32211, first, second pitman pin sliding groove 32111,32211 corresponds to each other, aforementioned First connecting rod axis pin 522 is slidably matched with first connecting rod pin slide slot 32111, aforementioned second connecting rod axis pin 532 and second Pitman pin sliding groove 32211 is slidably matched, and one end of aforementioned extension spring 54 is hung on first connecting rod axis pin 522, and another One end is hung on second connecting rod axis pin 532.

See Fig. 9 and continuing with Fig. 1 to Fig. 3, applicant it should be noted that：Due to the structure of second connecting rod 53 be with First connecting rod 52 is identical, thus what is be shown in FIG. 9 is first connecting rod 52.In aforementioned first connecting rod 52 and aforesaid central connecting rod 51 hinged one end and being formed towards upper side has a first connecting rod to avoid step surface 521（Also it can claim " first connecting rod avoidance Step concave surface "）, the end that step surface 521 is avoided in the first connecting rod offers a first connecting rod hinge hole 5211.By Fig. 1 extremely Shown in Fig. 3, being formed in aforementioned second connecting rod 53 and the hinged one end of aforesaid central connecting rod 51 and the side under has one the Two connecting rods avoid face 531（Fig. 1 is marked）, offer a second connecting rod in the end of second connecting rod avoidance step surface 531 and be hinged Hole 5311, first connecting rod avoids step surface 521 and second connecting rod avoids step surface 531 each other to facing to coordinate, and in Heart connecting rod hinging pin shaft 59 is successively through second connecting rod hinge hole 5311 and first connecting rod hinge hole 5211 by aforementioned first connecting rod 52 One end, second connecting rod 53 one end and aforesaid central connecting rod 51 one end it is coaxially hinged.

As a preferred option, and as shown in Figure 9, above and below being illustrated at the both ends of aforementioned first connecting rod axis pin 522 End is respectively provided with a jump-ring slot 5221 for setting clamp spring, 532 same example of second connecting rod axis pin.The self-evident effect of aforementioned clamp spring It is the end limiting to extension spring 54.

Refer to Fig. 6 a, 6b and Fig. 7 b, aforementioned static contact 2 is included relative to aforementioned straight-bar body 31 symmetrically arranged the One static contact 21 and the second static contact 22, one end of i.e. first, second static contact 21,22 of above-mentioned two static contact are symmetrically fixed There is a stationary contact 20, the bottom of each static contact offers being respectively used to and be formed in aforementioned housing 1 and touched corresponding to aforementioned The bottom caulking groove 13 and the side wall corresponding to contact cavities 1112 of the bottom of head cavity 1112（That is the cavity wall of straight-bar body accommodating chamber 11）On Side caulking groove 14 distinguish the bottom embedding prominent 201 of scarf and side embedding prominent 202, aforementioned a pair is symmetricly set on touching for 31 both sides of straight-bar body Set up the first static contact 21 and the second static contact 22 in head cavity 1112 separately.It is most left positioned at housing 1 in housing 1 as shown in Figs 1-4 End（It is i.e. adjacent with shell left end shell wall）A pair set up separately in the contact cavities 1112 of 31 both sides of straight-bar body, will be put shown in Fig. 6 b Second static contact 22 in direction after 180 ° of overturning, is arranged on the contact of the forepart of the straight-bar body 31 of position shown in Fig. 1 clockwise In chamber 1112, after the first static contact 21 of placing direction shown in Fig. 6 a clockwise 180 ° of overturning, it is arranged on position shown in Fig. 1 Straight-bar body 31 rear portion contact cavities 1112 in, two static contacts cooperations of the first movable contact spring 41 and this form normally closed auxiliary and touch Head；Set up the 1112 adjacent pair contact cavities of contact cavities in 31 both sides of straight-bar body separately with a pair for being located at 1 left end of housing In 1112, the first static contact 21 of placing direction shown in Fig. 6 a is arranged on to the forepart of the straight-bar body 31 of position shown in Fig. 1 In contact cavities 1112, the second static contact 22 of placing direction shown in Fig. 6 b is arranged on to the straight-bar body 31 of position shown in Fig. 1 In the contact cavities 1112 at rear portion, two static contact cooperations of the second movable contact spring 42 and this form normally opened auxiliary contact.Normally closed auxiliary is touched Head and normally opened auxiliary contact are shown in Fig. 7 b.And so on, normally closed auxiliary contact holds with normally opened auxiliary contact interval along straight-bar body successively Receive the length direction of chamber 11（Position shown in Fig. 1 is from left to right）Arrangement.

The course of work：Such as Fig. 1, when auxiliary switchgear is in original state, the center rod 51 of actuating device of the spring 5 Center rod limiting block dash forward and 55 coordinate with the wall body of driving device accommodating chamber 12（Patch is touched）, end and the straight-bar body of guide rod 3 hold Receive chamber 11 left end shell wall body cooperation（Patch is touched）, under the action of extension spring 54, guide rod 3 keeps the A directions illustrated into Fig. 1 The trend of movement so that the normally closed auxiliary contact in the contact cavities 1112 of the leftmost position in straight-bar body accommodating chamber 11 is kept It is closed, the normally opened auxiliary contact in the contact cavities 1112 adjacent with the contact cavities 1112 of leftmost position stays open.At this point, contact System is located at first position, reflects the gate-dividing state of switching device（First state）.If breaker main contact acts, such as open circuit Device is from separating brake（First state）To combined floodgate（Second state）In action process, main axis pushes push plate 57 toward A directions, Center rod 51 is to left movement so that the angle between first connecting rod 52 and second connecting rod 53 becomes larger, first connecting rod axis pin 522 with And second connecting rod axis pin 532 moves respectively to the B directions and C directions being illustrated in Fig. 1, extension spring 54 stretches energy storage, until Reach the dead-centre position of actuating device of the spring, dead-centre position such as Fig. 2, i.e. first connecting rod 52, second connecting rod 53 and extension spring 54 Position located on a straight line, in above process, 3 remains stationary of guide rod, then, when center rod 51 continues to left movement, Behind the dead-centre position for crossing actuating device of the spring 5, extension spring 54 releases energy, since main shaft is to the pushing in center rod 51 The holding of plate 57 pushes so that spring energy is discharged by first, second pitman pin to guide rod 3, as shown in figure 3, guide rod 3 to Right movement is moved to D directions, until two arms i.e. end, that is, right end end face of first, second arm 321,322 of the U-shaped body of rod 32 It contacts and limits with the locating part 122 on 12 two side of driving device accommodating chamber, former normally opened auxiliary contact is closed, former normally closed auxiliary Contact is opened.At this point, contact system is located at the second position, reflect the "on" position of switching device（Second state）.Work as breaker Main contact main axis, breaker is from combined floodgate（Second state）It converts to separating brake（First state）In the process, main contact principal axis solution Except the pushing to push plate 57, under the action of resetting spring 6, center rod 51 is moved along D directions, and extension spring 54 stretches storage Can, until the dead-centre position of actuating device of the spring 5 is reached, at this point, guide rod 3 is failure to actuate, when actuating device of the spring 5 is driven to more After crossing dead-centre position, actuating device of the spring releases energy, and drive leader 3 acts, and guide rod 3 is with movable contact system from above-mentioned second It puts and moves to first position, this process is opposite with the above process.

Embodiment 2：

Figure 10 to 16 is referred to, relative to embodiment 1, the present embodiment 2 shows another knot of actuating device of the spring 5 Structure.

As described in Example 1, the aforementioned U-shaped body of rod 32 has one first arm 321 and one second arm 322, the bullet of the present embodiment 2 Spring driving device 5 is nested with bar 58 including center rod 51, first, second compression spring 511,512 and resetting spring, center rod 51, First compression spring 511 and the second compression spring 512 are arranged in aforementioned driving device accommodating chamber 12, the first compression spring 511 and second Compression spring 512 is arranged symmetrically in relation to each other, and one end of the first compression spring 511 is supported on the first compression spring supporting head 513, and the first compression spring 511 The other end be supported on the second compression spring supporting head 514, one end of the second compression spring 512 is supported on third compression spring supporting head 515, And the other end of the second compression spring 512 is supported on the 4th compression spring supporting head 516, the first compression spring supporting head 513 and third compression spring Supporting head 515 and one end of center rod 51 are coaxially hinged, and the second compression spring supporting head 514 and the first aforementioned arm 321 are hinged, the Four compression spring supporting heads 516 and the second aforementioned arm 322 are hinged, have center rod limiting in the other end composition of center rod 51 Gear prominent 55, one end and the center rod limiting block of resetting spring loop bar 58 are dashed forward 55 fixations, and resetting spring is nested with the another of bar 58 The side wall across aforementioned housing 1 is held to extend to outside aforementioned driving device accommodating chamber 12, and composition has a push plate 57, it is aforementioned Resetting spring 6 is nested on foregoing reset spring loop bar 58, and one end of the resetting spring 6 is supported on housing 1 back to driving device On the wall body of the side of accommodating chamber 12, the other end is supported in push plate 57.

As shown in Figure 13, on aforementioned first arm 321 of the aforementioned U-shaped body of rod 32 to be parallel to the long side side of the first arm 321 To state offer one first hinge cavity 3212, and to be parallel to second on aforementioned second arm 322 of the aforementioned U-shaped body of rod 32 The state of the long side direction of arm 322 offers one second hinge cavity 3222,3222 and first hinge cavity 3212 of the second hinge cavity Corresponding, the second aforementioned compression spring supporting head 514 probes into the first hinge cavity 3212 and by the first swivel pin of compression spring supporting head 5141 and first arm 321 of axis is hinged, and the 4th aforementioned compression spring supporting head 516 probes into the second hinge cavity 3222 and by compression spring branch Take the lead the second hinging pin shaft 5161 and the second arm 322 is hinged.

Figure 15 is referred to, Figure 15 illustrates the detailed construction of aforementioned first compression spring supporting head 513, is supported in first compression spring First 513 both ends have respectively constituted one first hole 5132 and one first cylinder table 5132, the first hole 5131 with by Figure 14 signals Center connection hinging pin shaft 59 is hinged, and being nested with and supporting for one end of the first compression spring 511 of the first cylinder table 5132.Due to The structure of three compression spring supporting heads 515 is identical with the first compression spring supporting head 513, and so it will not be repeated.

Figure 16 is referred to, Figure 16 shows the detailed construction of aforementioned second compression spring supporting head 514, is supported in second compression spring First 514 both ends have respectively constituted one second hole 5142 and one second cylinder table 5143, the second hole 5142 and aforementioned compression spring branch First hinging pin shaft 5141 of taking the lead is hinged, and the second cylinder table 5143 is nested with and supports for the other end of the first compression spring 511.Due to The structure of 4th compression spring supporting head 516 is identical with the second compression spring supporting head 514, therefore no longer repeats.

The course of work of the present embodiment 2：Such as Figure 10, when auxiliary switchgear is in original state, center rod 51 Center rod limiting block is dashed forward 55 to be coordinated with the wall body of driving device accommodating chamber 12, under the action of compression spring, guide rod 3 keep to like The trend of A directions movement shown in FIG. 1 so that normal in the contact cavities 1112 of the leftmost position in straight-bar body accommodating chamber 11 Auxiliary contact is closed to remain closed, the normally opened auxiliary contact in the contact cavities 1112 adjacent with most left contact cavities 1112 stays open, And so on.If breaker main contact closes a floodgate, main axis, push plate 57 is pushed toward like A directions shown in FIG. 1, with Center rod 51 is to left movement so that the angle between the first compression spring 511 and the second compression spring 512 becomes larger, first, second compression spring 511st, 512 by compressed energy-storage, until reaching the dead-centre position of actuating device of the spring 5, such as Figure 11, i.e. the first compression spring 511 and second The position located on a straight line of compression spring 512, in above process, 3 remains stationary of guide rod, then, when center rod 51 continue to Left movement, behind the dead-centre position for crossing actuating device of the spring 5, first, second compression spring 511,512 releases energy, due to main shaft pair The holding of push plate 57 in center rod 51 pushes so that spring energy by the first hinging pin shaft of compression spring supporting head 5141 and The second hinging pin shaft of compression spring supporting head 5161 is discharged to guide rod 3, and as shown in figure 12, guide rod 3 is to D directions（Fig. 3 shows）Movement, until Two arms of the U-shaped body of rod 32 i.e. 12 two side of end, that is, right end end face and driving device accommodating chamber of first, second arm 321,322 On locating part 122 contact and limit, former normally opened auxiliary contact is closed, and former normally closed auxiliary contact is opened.When breaker main contact Main axis, for example, from combined floodgate be changed into gate-dividing state when, the pushing to push plate 57 is released, in the effect of resetting spring 6 Under, center rod 51 is moved right along D directions, and first, second compression spring 511,512 compresses and energy storage, is driven until reaching spring The dead-centre position of dynamic device 5, at this point, guide rod 3 is failure to actuate, this process is opposite with the above process.

Certainly, contact system described in the utility model is not limited to the above-mentioned mode that dynamic/static contact is set in contact cavities, Microswitch can be also fixed in contact cavities, the frizzen of microswitch is driven when guide rod slides, so as to make the normal of microswitch Closed contact, normally opened contact conversion.The component of switching device actuating auxiliary switch can also be the other component other than main shaft, Main contact in such as switching device.

In conclusion technical solution provided by the utility model compensates for the shortcoming in prior art, favorably accomplish Invention task has faithfully fulfilled the technique effect that applicant refers in technical effect column above.

Claims (10)

1. a kind of auxiliary switch of switching device, including housing (1), the contact system being arranged in housing (1) and transmission dress It puts, the switching device has first state and the second state and acts between the first state and a second state, described Transmission device receive the action of switching device and activate the first state of the contact system in reflection switching device First position and reflection switching device second state the second position between act, it is characterised in that it is described Transmission device includes resetting spring (6), guide rod (3) and actuating device of the spring (5), and guide rod (3) is movably arranged at the housing (1) in, actuating device of the spring (5) is similarly disposed in housing (1) and is connect with guide rod (3), and resetting spring (6) is arranged on bullet In spring driving device (5), when the switching device is acted from the first state to second state, the spring is driven Driving device (5) energy storage and actuating device of the spring is driven to after crossing dead-centre position, the actuating device of the spring (5) release energy Amount drives the guide rod (3) to act, and the contact system is driven to move to described the from the first position by guide rod (3) Two positions；When the switching device is from second state motion to the first state, the resetting spring (6) driving Actuating device of the spring (5) energy storage, and actuating device of the spring (5) is driven to after crossing dead-centre position, the actuating device of the spring (5) it releases energy, drive leader (3) action moves to first position by guide rod (3) band movable contact system from the second position.

2. the auxiliary switch of a kind of switching device according to claim 1, it is characterised in that the housing (1) has one Driving device accommodating chamber (12) and always body of rod accommodating chamber (11), the guide rod (3) is including for driving the contact system to move The body of rod always (31) made and one is used for the U-shaped body of rod (32) connected for the actuating device of the spring (5), and straight-bar body (31) is by institute The middle position for stating the U-shaped body of rod (32) towards the side of the straight-bar body accommodating chamber (11), which extends, to be formed, which holds It is contained in the straight-bar body accommodating chamber (11) and is slidably matched with straight-bar body accommodating chamber (11), the U-shaped body of rod (32) is contained in institute It is slidably matched in the driving device accommodating chamber (12) stated and with driving device accommodating chamber (12).

A kind of 3. auxiliary switch of switching device according to claim 2, it is characterised in that the U-shaped body of rod (32) tool There are one first arm (321) and one second arm (322), the actuating device of the spring (5) includes center rod (51), first connecting rod (52), second connecting rod (53), extension spring (54) and resetting spring are nested with bar (58), center rod (51), first connecting rod (52), Second connecting rod (53) and extension spring (54) are arranged in the driving device accommodating chamber (12), and first connecting rod (52), second connect Bar (53) is arranged symmetrically in relation to each other, and one end of first connecting rod (52) and one end of second connecting rod (53) and center rod (51) One end it is coaxially hinged, it is sliding with first arm (321) that the other end of first connecting rod (52) passes through first connecting rod axis pin (522) Dynamic cooperation, the other end of second connecting rod (53) are slidably matched by second connecting rod axis pin (532) and second arm (322), There is a center rod limiting block to dash forward (55) in the other end composition of center rod (51), extension spring (54) is connected to described the First, between second connecting rod axis pin (522,532), resetting spring is nested with one end of bar (58) and center rod limiting block dashes forward (55) admittedly It is fixed, and the other end that resetting spring is nested with bar (58) passes through the side wall of the housing (1) to be stretched over the driving device accommodating chamber (12) outside and form have a push plate (57), the resetting spring (6), which is nested with, to be nested in the resetting spring on bar (58), One end of the resetting spring (6) is supported on housing (1) back on the wall body of the side of driving device accommodating chamber (12), other end branch It holds in push plate (57).

4. the auxiliary switch of a kind of switching device according to claim 3, it is characterised in that in the U-shaped body of rod (32) The side of first arm (321) back to second arm (322) is extended with a first connecting rod axis pin matching seat (3211), and Being formed on the first connecting rod axis pin matching seat (3211) has a first connecting rod pin slide slot (32111), and in the second arm (322) it is extended with one back to the side of the first arm (321) and in the position corresponding to first connecting rod axis pin matching seat (3211) Second connecting rod axis pin matching seat (3221), and composition has a second connecting rod pin on the second connecting rod axis pin matching seat (3221) Axis sliding groove (32211), first, second pitman pin sliding groove (32111,32211) correspond to each other, the first connecting rod pin Axis (522) is slidably matched with first connecting rod pin slide slot (32111), the second connecting rod axis pin (532) and second connecting rod Pin slide slot (32211) is slidably matched, and one end of the extension spring (54) is hung on first connecting rod axis pin (522), and The other end is hung on second connecting rod axis pin (532).

5. the auxiliary switch of a kind of switching device according to claim 3, it is characterised in that in the first connecting rod (52) Hinged one end and being formed towards upper side has a first connecting rod to avoid step surface (521) with the center rod (51), The end that step surface (521) is avoided in the first connecting rod offers a first connecting rod hinge hole (5211), in the second connecting rod (53) side with the hinged one end of the center rod (51) and under, which is formed, has a second connecting rod to avoid face (531), The end that step surface (531) is avoided in the second connecting rod offers a second connecting rod hinge hole (5311), and first connecting rod avoids platform Terrace (521) and second connecting rod avoid step surface (531) each other to facing to coordinate, and by center rod hinging pin shaft (59) Successively through second connecting rod hinge hole (5311) and first connecting rod hinge hole (5211) by one end of the first connecting rod (52), second One end of connecting rod (53) is coaxially hinged with one end of the center rod (51).

A kind of 6. auxiliary switch of switching device according to claim 2, it is characterised in that the straight-bar in the housing (1) In two cavity walls of the opposite side of the long side direction of body accommodating chamber (11) and with perpendicular to the state interval of cavity wall it is extended have it is multiple It is several to partition wall (111), be oriented to sliding cavity (1111), the straight-bar per the body of rod always is formed between a pair of partition wall (111) Body (31) is oriented to sliding cavity (1111) with straight-bar body and is slidably matched, the space structure between each two adjacent pairs partition wall (111) As contact cavities (1112), the contact system is arranged in contact cavities (1112).

7. the auxiliary switch of a kind of switching device according to claim 6, it is characterised in that the contact system includes Plural number is to the static contact (2) being fixed in the contact cavities (1112) and a plurality of and static contact (2) matched moving contact (4), being formed on the straight-bar body (31) has several and contact cavities (1112) the corresponding moving contact accommodating chambers in position (312), which penetrates through from the side of straight-bar body (31) to opposite side, and the moving contact (4) includes One movable contact spring (41), the second movable contact spring (42), partition (43), the first movable contact spring spring (44) and the second movable contact spring spring (45), Partition (43) is corresponding between first, second movable contact spring (41,42), and the first movable contact spring (41) is back to the one of the second movable contact spring (42) The both ends of side are respectively fixed with one first movable contact (411), and the second movable contact spring (42) is back to the two of the side of the first movable contact spring (41) End is respectively fixed with one second movable contact (421), and the first movable contact spring spring (44) is supported on the middle part of the side of partition (43) and the Between the middle part of one movable contact spring (41), the second movable contact spring spring (45) is supported on the middle part of the opposite side of partition (43) and second and moves Between the middle part of contact (42), first, second movable contact spring (41,42) and partition (43) are corresponding to the moving contact accommodating chamber (312) position is arranged on the straight-bar body (31), wherein：The first movable contact (411) of first movable contact spring (41) is with setting The static contact (2) described in a pair of both sides that are in the contact cavities (1112) and being symmetrically distributed in straight-bar body (31) is placed in match It closes and is configured to normally closed auxiliary contact, the second movable contact (421) of the second movable contact spring (42) is with being arranged on adjacent contact chamber (1112) a pair of of static contact (2) of both sides that are in and being equally symmetrically distributed in straight-bar body (31) coordinates and is configured to normally opened auxiliary It helps a little.

A kind of 8. auxiliary switch of switching device according to claim 7, it is characterised in that first movable contact spring (41) Middle part and corresponding to the first movable contact spring spring (44) position form have one first movable contact spring encircle (412), in institute It states the middle part of the second movable contact spring (42) and being formed in the position corresponding to the second movable contact spring spring (45) has one second to move Contact encircles (422), and the shape of the first movable contact spring (41) is made by the first movable contact spring arch (412) in Ω shapes, dynamic tactile by second Piece encircles (422) and makes the shape of the second movable contact spring (42) in Ω shapes, in the partition (43) towards first movable contact spring (41) Side and corresponding to the first movable contact spring spring (44) position form have one first movable contact spring spring-loaded round platform (431), and partition (43) is towards the side of second movable contact spring (42) and corresponding to the second movable contact spring spring (45) position, which is formed, one second movable contact spring spring-loaded round platform (432), and the first movable contact spring spring (44) is towards partition (43) One end be supported on the first movable contact spring spring-loaded round platform (431), the second movable contact spring spring (45) is towards the one of partition (43) End is supported on the second movable contact spring spring-loaded round platform (432).

9. the auxiliary switch of a kind of switching device according to claim 2, it is characterised in that the U-shaped body of rod (32) has One first arm (321) and one second arm (322), the actuating device of the spring (5) include center rod (51), first, second Compression spring (511,512) and resetting spring are nested with bar (58), center rod (51), the first compression spring (511) and the second compression spring (512) It being arranged in the driving device accommodating chamber (12), the first compression spring (511) and the second compression spring (512) are arranged symmetrically in relation to each other, One end of first compression spring (511) is supported on the first compression spring supporting head (513), and the other end of the first compression spring (511) is supported on On second compression spring supporting head (514), one end of the second compression spring (512) is supported on third compression spring supporting head (515), and the second pressure The other end of spring (512) is supported on the 4th compression spring supporting head (516), the first compression spring supporting head (513) and third compression spring branch It takes the lead (515) and one end of center rod (51) is coaxially hinged, the second compression spring supporting head (514) and first arm (321) Hinged, the 4th compression spring supporting head (516) is hinged with second arm (322), has in the other end composition of center rod (51) One center rod limiting block is dashed forward (55), one end of resetting spring loop bar (58) and center rod limiting block dash forward (55) it is fixed, and answer The other end that position spring is nested with bar (58) passes through the side wall of the housing (1) to extend to the driving device accommodating chamber (12) outside, And forming has a push plate (57), and the resetting spring (6) is nested on the resetting spring loop bar (58), the reset bullet One end of spring (6) is supported on housing (1) back on the wall body of the side of driving device accommodating chamber (12), and the other end is supported on pushing On plate (57).

10. the auxiliary switch of a kind of switching device according to claim 9, it is characterised in that in the U-shaped body of rod (32) First arm (321) on to be parallel to the state of the long side direction of the first arm (321) offer one first hinge cavity (3212), to be parallel to the long side direction of the second arm (322) and on second arm (322) of the U-shaped body of rod (32) State offers one second hinge cavity (3222), and second hinge cavity (3222) is corresponding with the first hinge cavity (3212), described The second compression spring supporting head (514) probe into the first hinge cavity (3212) and by the first hinging pin shaft of compression spring supporting head (5141) Hinged with the first arm (321), the 4th compression spring supporting head (516) probes into the second hinge cavity (3222) and by compression spring branch The second hinging pin shaft (5161) of taking the lead is hinged with the second arm (322).