CN217521919U - Auxiliary contact structure and relay comprising same - Google Patents

Abstract

The utility model relates to an auxiliary contact structure and contain relay of this structure, wherein the auxiliary contact structure is including setting up in the inside auxiliary contact subassembly, the main subassembly and the arc isolating mechanism that touches of explosion chamber, the auxiliary contact subassembly is including the supplementary stationary contact and the supplementary movable contact spring that cooperate and use, the main subassembly that touches includes movable contact and stationary contact, the arc isolating mechanism set up in main contact subassembly and supplementary contact subassembly between and be used for keeping apart main contact electric arc, the auxiliary contact structure still includes the drive the catch bar subassembly that supplementary movable contact spring removed, the catch bar subassembly is connected the movable contact, supplementary movable contact spring is connected the catch bar subassembly. Supplementary movable contact spring is independent mutually with the insulating seat when not assembling, and supplementary movable contact spring connects the insulating seat of push rod subassembly when the equipment for supplementary movable contact spring is difficult to produce deformation in transportation and installation, if supplementary movable contact spring exists defective products and produces and no longer need scrap push rod subassembly together with supplementary movable contact spring, has reduced the cost.

Description

Auxiliary contact structure and relay comprising same

Technical Field

The utility model relates to a relay field especially relates to auxiliary contact structure and contain relay of this structure.

Background

A relay is an electric control device that generates a predetermined step change in a controlled amount in an electric output circuit when a change in an input amount meets a predetermined requirement. The relay has an interactive relation between a control system and a controlled system, is usually applied to an automatic control circuit, and actually is an 'automatic switch' for controlling the operation of a large current by using a small current, so that the relay plays roles of automatic adjustment, safety protection, circuit conversion and the like in the circuit.

Two groups of contacts are usually arranged in the relay, one group of main contacts are fixed on the electromagnetic assembly, and the on-off control of the main control circuit is completed through the electromagnetic assembly; the other group is an auxiliary contact which is used as an auxiliary logic switch with a circuit control function and acts simultaneously with the main contact, the switch capacity of the auxiliary contact is smaller than that of the main contact, and other logic operations which need to be completed when the relay acts can be realized by utilizing the auxiliary contact.

In the relay auxiliary contact structure and relay that chinese patent CN202121479962.1 provided, it discloses that the supplementary subassembly that touches includes supplementary terminal and the supplementary movable contact spring of drawing forth of cooperation use, still includes the catch bar subassembly that the supplementary movable contact spring of drive removed, and this supplementary terminal of drawing forth runs through and sets up in the arc extinguish chamber, and integrative injection moulding between supplementary movable contact spring and the catch bar subassembly, nevertheless above-mentioned auxiliary contact structure has the problem as follows:

because supplementary movable reed and the integrative injection moulding of catch bar subassembly for deformation appears easily in supplementary movable reed in transportation and installation, consequently needs the input cost to carry out the management and control to the deformation position that appears easily.

If the auxiliary movable spring leaves generate defective products, the injection molding assemblies of the auxiliary movable spring leaves and the push rod assembly are all scrapped, and the cost of an enterprise is correspondingly increased while the scrappage is increased.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide an auxiliary contact structure and a relay including the same to solve one or more problems in the prior art.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the auxiliary contact structure, including setting up in the inside auxiliary contact subassembly, the main subassembly and the arc mechanism that touches of explosion chamber, the auxiliary contact subassembly is including the auxiliary stationary contact and the supplementary movable contact spring that cooperate and use, the main subassembly that touches includes movable contact and stationary contact, separate the arc mechanism set up in the main subassembly and the auxiliary contact subassembly between and be used for keeping apart main contact electric arc, the auxiliary contact structure still includes the drive the catch bar subassembly that supplementary movable contact spring removed, the catch bar subassembly is connected the movable contact, supplementary movable contact spring is connected the catch bar subassembly.

Further, the auxiliary movable spring plate comprises a first part connected with the pushing rod assembly, a third part used for being matched with the auxiliary stationary contact, and a second part located between the first part and the third part, wherein the first part is lower than the third part, and the first part and the third part are arranged in a non-parallel mode.

Furthermore, the first part is provided with at least one first hole.

Furthermore, one end of the second portion, which is far away from the first portion, is provided with a bending portion.

Furthermore, the bending direction of the bending part is the same as the direction in which the auxiliary stationary contact extends into the arc extinguish chamber.

Furthermore, the bending direction of the bending part is different from the direction in which the auxiliary stationary contact extends into the arc extinguish chamber.

Furthermore, the arc extinguish chamber is formed by a closed space formed by connecting a ceramic body and a yoke plate, the fixed contact of the main contact assembly and the auxiliary fixed contact both extend into the arc extinguish chamber, and the movable contact of the main contact assembly and the auxiliary movable reed are arranged in the arc extinguish chamber.

Further, the auxiliary stationary contact is connected with the ceramic body.

Furthermore, the auxiliary stationary contact is connected with the yoke plate through a ceramic cylinder.

Further, the arc separation mechanism comprises a first insulation frame connected with the yoke iron plate, the first insulation frame comprises a first frame body and is connected with first side plates on two sides of the first frame body, a partition plate is further connected between the two first side plates, a second hole through which the auxiliary stationary contact can pass is formed in the partition plate, each second hole is formed in the outer side of the first side plate, and a third hole is formed in the second protrusion.

Further, the frame body is further provided with a first extending portion, the first extending portion is arranged close to the yoke iron plate, and a first opening for the auxiliary movable spring leaf to extend out is formed between the first extending portion and each first side plate.

Further, the arc isolating mechanism comprises a second insulating frame connected with the yoke plate, the second insulating frame comprises a second frame body and second side plates connected with two sides of the second frame body, the outer side of each second side plate is connected with a third bulge, and a fourth hole is formed in each third bulge; and a second extending part is further arranged on the second frame body, and a second opening for the auxiliary movable spring to extend out is formed between the second extending part and each second side plate.

Further, a plurality of convex hulls are arranged on the surface of the yoke iron plate.

Furthermore, the push rod assembly comprises an insulating seat and a push rod connected with one end of the insulating seat, and the other end of the insulating seat is connected with the movable contact through a support.

Correspondingly, the utility model also provides a relay, including above-mentioned auxiliary contact structure, and drive the electromagnetic drive subassembly that the push rod subassembly removed.

Compared with the prior art, the utility model discloses a beneficial technological effect as follows:

the auxiliary movable spring plate is independent of the insulating base when not assembled, and the auxiliary movable spring plate is connected with the insulating base of the push rod assembly when assembled, so that the auxiliary movable spring plate is not easy to deform in the transportation and installation processes, defective products exist in the auxiliary movable spring plate, the push rod assembly is not required to be scrapped together with the auxiliary movable spring plate, and the cost is reduced.

(II) furtherly, have the portion of bending in the supplementary movable contact spring, the direction of bending of the portion of bending can be the same with the direction that supplementary stationary contact stretched into the explosion chamber, also can be different, and the portion of bending is buckled along upwards or decurrent direction and can be further prolonged the arm of force of supplementary movable contact spring, makes the atress and the deformation stress dispersion of supplementary movable contact spring, has further increased the mechanical life and the reliability of supplementary movable contact spring 2.

And (III) further, the auxiliary static contact can be connected with the ceramic body or can be connected with the yoke plate through the ceramic cylinder, the auxiliary static contact is connected with the ceramic body, the bending direction of the auxiliary movable spring leaf is the same as the direction in which the auxiliary static contact extends into the arc extinguish chamber, and the auxiliary contact loop can be switched on while the main loop is switched on. When the auxiliary static contact is connected with the yoke plate through the ceramic cylinder, and the bending direction of the auxiliary movable spring is different from the direction in which the auxiliary static contact extends into the arc extinguish chamber, the main circuit can be switched on while the auxiliary contact circuit is switched off.

And (IV) further, the arc isolating mechanism isolates the low-voltage part of the auxiliary contact assembly from the high-voltage part of the main contact assembly, so that high-voltage breakdown is avoided, and the on-off state of the main loop is detected at lower cost.

Drawings

Fig. 1 shows a schematic structural diagram of an auxiliary contact structure and a relay including the same according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of an auxiliary contact structure and a relay including the same at a first view angle according to an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional view of an auxiliary contact structure and a relay including the same at a second view angle according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of an auxiliary contact structure and an insulating frame and a yoke plate in a relay including the same according to an embodiment of the present invention.

Fig. 5 shows a schematic structural diagram of an auxiliary contact structure and a relay middle insulating base and an auxiliary movable contact spring including the same according to an embodiment of the present invention.

Fig. 6 shows a schematic structural diagram of an auxiliary contact structure and an auxiliary movable contact spring in a relay including the same according to an embodiment of the present invention.

Fig. 7 shows a schematic diagram of a part of the structure of a relay including a second auxiliary contact structure according to an embodiment of the present invention.

Fig. 8 shows a schematic structural diagram of a second auxiliary contact structure and a yoke plate and an auxiliary stationary contact in a relay including the same according to an embodiment of the present invention.

Fig. 9 is a schematic diagram illustrating a second auxiliary contact structure and a contact structure between a yoke plate and an auxiliary stationary contact in a relay including the second auxiliary contact structure according to an embodiment of the present invention.

In the drawings, the reference numbers: 1. a push rod assembly; 101. an insulating base; 102. a push rod; 103. a support; 111. a first protrusion; 112. a first groove; 1011. a flange; 1012. a second groove; 1013. a first spring; 2. an auxiliary movable spring plate; 200. a first part; 201. a second section; 202. a third section; 21. a first hole; 22. a bending part; 30. a first insulating frame; 3000. a first frame body; 3001. a first side plate; 3002. a first extension portion; 3003. a first opening; 301. a partition plate; 302. a second protrusion; 303. a second hole; 304. a third aperture; 31. a second insulating frame; 31. a second insulating frame; 3100. a second frame body; 3101. a second side plate; 3102. a third protrusion; 3103. a fourth aperture; 3104. a second extension portion; 4. an auxiliary stationary contact; 5. a yoke iron plate; 51. a convex hull; 52. mounting holes; 6. a movable iron core; 600. a third groove; 7. a movable contact; 8. a stationary contact; 9. a second spring; 10. a ceramic cylinder; 11. welding flux; 12. a first magnetizer; 13. a second magnetizer; 14. a ceramic body.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following description is made in detail with reference to the accompanying drawings and the detailed description of the relay including the auxiliary contact structure of the present invention. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. To make the objects, features and advantages of the present invention more comprehensible, please refer to the attached drawings. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limitation of the implementation of the present invention, so that the present invention does not have the essential significance in the technology, and any modification of the structure, change of the ratio relationship or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention.

The first embodiment is as follows:

referring to fig. 1, the auxiliary contact structure includes an auxiliary contact assembly, a main contact assembly and an arc isolating mechanism disposed inside the arc extinguishing chamber. The auxiliary contact assembly comprises an auxiliary static contact 4 and an auxiliary movable contact spring 2 which are matched with each other for use, the main contact assembly comprises a movable contact 7 and a static contact 8, the arc isolating mechanism is arranged between the main contact assembly and the auxiliary contact assembly and used for isolating electric arcs of the main contact, the auxiliary contact structure further comprises a push rod assembly 1 for driving the auxiliary movable contact spring 2 to move, and the push rod assembly 1 is connected with the movable contact 7. The movable contact 7 and the push rod assembly 1 are matched with an electromagnetic driving assembly for use, so that on-off control of a main control circuit is completed through the electromagnetic driving assembly. Similarly, the auxiliary movable contact spring 2 acts as an auxiliary logic switch for the circuit control function, and acts simultaneously with the movable contact 7, and a set of normally open auxiliary contact structures is realized in the first embodiment.

Referring to fig. 1 and 2, the auxiliary movable spring plate 2 is connected to the push rod assembly 1.

Specifically, with continuing reference to fig. 2, fig. 3 and fig. 5, the following first describes the specific structure of the push rod assembly 1 as follows:

the push rod assembly 1 includes an insulating base 101 and a push rod 102 connected to a lower half portion of the insulating base 101, an upper half portion of the insulating base 101 is connected to a bracket 103, and the bracket 103 is connected to the movable contact 7, wherein in the first embodiment, the push rod 102 and the bracket 103 are integrally formed with the insulating base 101 during injection molding.

With continuing reference to fig. 2, fig. 3 and fig. 5, the outer side of one long side of the insulating base 101 has a first groove 112, and at least one first protrusion 111 is disposed on the first groove 112, preferably, in the auxiliary contact structure of the first embodiment, the number of the first protrusions 111 is three and is in a column shape.

Further, with reference to fig. 2, fig. 3 and fig. 5, a flange 1011 is further provided at the center of the insulating base 101, a second groove 1012 is further formed on the insulating base 101 around the outer side of the flange 1011, the lower end of the first spring 1013 is connected to the flange 1011 and is positioned in the second groove 1012, the upper end of the first spring 1013 is connected to the lower half of the second magnetizer 13, the upper half of the second magnetizer 13 is connected to the inner side of the bracket 103, and the outer side of the top of the bracket 103 is further connected to the first magnetizer 12.

Referring to fig. 6, the following describes the specific structure of the auxiliary movable spring plate 2 in detail as follows:

the auxiliary movable spring plate 2 includes a first portion 200, and at least one first hole 21 is formed in the first portion 200, and preferably, in the auxiliary contact structure according to the first embodiment, the number of the first holes 21 is three and is equal to the number of the first protrusions 111, and the first holes 21 are circular holes and are adapted to the shape of the first protrusions 111. In the actual installation process, the first hole 21 is connected with the first protrusion 111 by using a hot melting process, so that the auxiliary movable reed 2 is connected with the insulating base 101. Because the auxiliary movable reed 2 and the insulating base 101 are two structures independent of each other, the auxiliary movable reed 2 can be independently transported before being connected with the insulating base 101, and the problem that deformation is easily caused by integral injection molding in the prior art is avoided.

The auxiliary movable contact spring 2 further comprises a third part 202 used for being matched with the auxiliary fixed contact 4 and a second part 201 arranged between the first part 200 and the third part 202, and the first part 200, the second part 201 and the third part 202 are integrally connected to form a U-shaped structure. Wherein the first portion 200 is disposed lower than the third portion 202, and the first portion 200 is disposed non-parallel to the third portion 202.

Further, with continuing reference to fig. 3 and fig. 5, one end of the second portion 201 away from the first portion 200 is provided with a bent portion 22, in the auxiliary contact structure of the first embodiment, a bending direction of the bent portion 22 is the same as a direction in which the auxiliary stationary contact 4 extends into the arc extinguish chamber, specifically, as can be seen from fig. 3, the auxiliary stationary contact 4 extends downward into the interior of the ceramic body 14 along the ceramic body 14, and similarly, the bent portion 22 is also bent downward. The bending part 22 prolongs the force arm of the auxiliary movable spring leaf 2, so that the stress and the deformation stress of the auxiliary movable spring leaf 2 are dispersed, and the mechanical life and the reliability of the auxiliary movable spring leaf 2 are further prolonged.

Further, referring to fig. 1, 2 and 3, the arc extinguishing chamber is formed by a sealed space in which a ceramic body 14 is connected to the yoke plate 5. Preferably, in the first embodiment of the present invention, in the auxiliary contact structure, the surface of the yoke plate 5 may also be connected to a frame plate (not marked in the figure) having a hollow portion, the frame plate is made of kovar alloy, the upper half of the frame plate is brazed to the ceramic body 14, and the lower half of the frame plate is welded to the yoke plate 5 by laser, so as to have the functions of reliable connection and improving sealing performance. The lower half part of the static contact 8 of the main contact assembly and the lower half part of the auxiliary static contact 4 both penetrate through the ceramic body 14 and extend into the arc extinguish chamber, and the movable contact 7 and the auxiliary movable contact spring 2 of the main contact assembly are also arranged in the arc extinguish chamber.

Further, referring to fig. 3, the upper half of the auxiliary stationary contact 4 is connected to the ceramic body 14.

The following detailed arc isolating mechanism has the following specific structure:

referring to fig. 1, fig. 3 and fig. 4, the arc isolating mechanism isolates the low-voltage part of the auxiliary contact assembly from the high-voltage part of the main contact assembly, so as to avoid high-voltage breakdown, and realize the function of detecting the on-off state of the contact of the main contact assembly by the normally open auxiliary contact assembly at a lower cost.

With continuing reference to fig. 1, fig. 3 and fig. 4, the arc blocking mechanism includes a first insulating frame 30 connected to the yoke plate 5, the first insulating frame 30 includes a first frame body 3000 and first side plates 3001 connected to two sides of the first frame body 3000, a partition plate 301 is further connected between the two first side plates 3001 at a half height of the first insulating frame 30, a second hole 303 through which the auxiliary stationary contact 4 can pass is formed in the partition plate 301, a second protrusion 302 is connected to an outer side of each first side plate 3001, and a third hole 304 is formed in the second protrusion 302.

With continuing reference to fig. 1, fig. 3 and fig. 4, further, the first frame body 3000 further has a first extending portion 3002, the first extending portion 3002 faces the yoke plate 5 and is disposed close to the yoke plate 5, a first opening 3003 for the auxiliary movable spring 2 to extend is formed between the first extending portion 3002 and each first side plate 3001, and the first opening 3003 prevents the first insulating frame 30 from interfering with the auxiliary movable spring 2.

With continuing reference to fig. 1, 3 and 4, the structure of the yoke plate 5 is described as follows:

the yoke plate 5 has a hole (not labeled) at the center through which the push rod 102 can pass, and a plurality of convex hulls 51 are further disposed on a surface of the yoke plate 5 facing the ceramic body 14, and the convex hulls 51 are used for matching with the third holes 304 of the first insulating frame 30 and at the matching points to realize the connection of the first insulating frame 30 and the yoke plate 5.

Referring to fig. 1, fig. 2 and fig. 3, correspondingly, the present invention further provides a relay, wherein the relay includes the above-mentioned auxiliary contact structure, and an electromagnetic driving assembly for driving the push rod assembly 1 to move. The electromagnetic driving assembly comprises a movable iron core 6, and the lower half part of the push rod 102 is in threaded connection with the movable iron core 6 and is fixed in an auxiliary mode through argon arc welding or dispensing. A third groove 600 is formed in the movable iron core 6, and a second spring 9 is arranged in the third groove 600 and sleeved on the outer side of the push rod 102.

The utility model discloses a concrete working process as follows:

referring to fig. 1, 2 and 3, the auxiliary movable spring piece 2 and the auxiliary stationary contact 4 form an auxiliary contact loop, and the movable contact 7 and the stationary contact 8 form a main loop.

With continuing reference to fig. 1, fig. 2 and fig. 3, in the process of closing the relay, the movable iron core 6, after being influenced by the electromagnetic force, overcomes the elastic force generated by the second spring 9 to drive the push rod assembly 1 and the movable contact 7 to move upward, the insulating base 101 in the push rod assembly 1 is connected with the auxiliary movable spring piece 2, so that the auxiliary movable spring piece 2 also moves upward along with the insulating base 101, and when the movable contact 7 contacts with the stationary contact 8, the main circuit is conducted. At the same time, each third portion 202 of the auxiliary movable spring piece 2 also contacts the auxiliary stationary contact 4, and the auxiliary contact circuit is electrically conducted.

With continued reference to fig. 1, 2 and 3, in the releasing process of the relay, since the relay is no longer affected by the electromagnetic force, the movable iron core 6 moves downward under the influence of the elastic force of the second spring 9, and drives the push rod assembly 1 and the movable contact 7 to move downward, since the insulating base 101 is connected to the auxiliary movable spring 2, the lowering of the insulating base 101 also drives the auxiliary movable spring 2 to lower, the lowering of the push rod assembly 1 separates the movable contact 7 from the stationary contact 8, and the main circuit is disconnected. Similarly, the auxiliary movable contact spring 2 is also separated from the auxiliary stationary contact 4, and the auxiliary contact circuit is opened.

When the fixed contact 8 contacts or separates from the movable contact 7, the auxiliary movable spring 2 generates an acting force, referring to fig. 5, the bending portion 22 extends the moment arm of the auxiliary movable spring 2, so that the stress and the deformation stress of the auxiliary movable spring 2 are dispersed, and the mechanical life and the reliability of the auxiliary contact are increased.

Example two:

most of the structures of the second embodiment are the same as those of the first embodiment, except that:

referring to fig. 6, the bending portion 22 of the auxiliary movable spring plate 2 and the auxiliary stationary contact 4 extend into the arc extinguish chamber in different directions. Specifically, the auxiliary movable spring 2 is bent in an upward direction at the bent portion 22 in the auxiliary contact structure according to the second embodiment, and this embodiment implements a set of normally closed auxiliary contact structures.

Referring to fig. 7 and 8, the auxiliary stationary contact 4 is no longer connected to the ceramic body 14, the auxiliary stationary contact 4 is connected to the yoke plate 5 through the ceramic cylinder 10, and the auxiliary stationary contact 4 extends into the arc extinguishing chamber through the yoke plate 5 in an upward direction.

Referring to fig. 7 and 8, in detail, the yoke plate 5 is provided with a mounting hole 52, the mounting hole 52 is capable of being engaged with an outer side of the ceramic cylinder 10, one end of the ceramic cylinder 10 is connected to a lower surface of the yoke plate 5 through the solder 11, the ceramic cylinder 10 has a through hole (not labeled in the figure), so that the auxiliary stationary contact 4 can extend into the arc extinguishing chamber from the through hole of the ceramic cylinder 10, and a joint of the auxiliary stationary contact 4 and the ceramic cylinder 10 is also soldered and hermetically connected through the solder 11.

Referring to fig. 7 and 9, in the second auxiliary contact structure of this embodiment, the arc separating mechanism no longer has the partition plate 301, the arc separating mechanism includes a second insulating frame 31 connected to the yoke plate 5, the second insulating frame 31 includes a second frame body 3100 and second side plates 3101 connected to both sides of the second frame body 3100, the second frame body 3100 is connected to a short side of each second side plate 3101, the second frame body 3100 is located at the top of the second insulating frame 31, a third protrusion 3102 is connected to the outer side of the second side plate 3101, a fourth hole 3103 is formed in the third protrusion 3102, and the fourth hole 3103 can be connected to the protrusion 51 on the yoke plate 5 and fixed by means of glue.

Further, with continued reference to fig. 7 and 9, the second frame body 3100 further includes a second extending portion 3104 on the long side thereof, and a second opening 3105 for the auxiliary movable spring plate 2 to extend is formed between the second extending portion 3104 and each second side plate 3101.

The working process of the auxiliary contact structure described in the second embodiment is as follows:

with continued reference to fig. 7 and 9, the auxiliary movable spring 2 and the auxiliary stationary contact 4 form an auxiliary contact loop, and the movable contact 7 and the stationary contact 8 form a main loop.

Referring to fig. 7 and 9, in the process of closing the relay, after the movable iron core 6 is affected by the electromagnetic force, the movable iron core overcomes the elastic force generated by the second spring 9 to drive the push rod assembly 1 and the movable contact 7 to move upward, the insulating base 101 in the push rod assembly 1 is connected to the auxiliary movable spring piece 2, so that the auxiliary movable spring piece 2 also moves upward along with the insulating base 101, and when the movable contact 7 contacts the stationary contact 8, the main circuit is turned on. At the same time, each third portion 202 of the auxiliary movable spring piece 2 rises and separates from the auxiliary stationary contact 4, so that the auxiliary contact circuit is opened.

With reference to fig. 7 and 9, in the releasing process of the relay, since the relay is no longer influenced by electromagnetic force, the movable iron core 6 moves downward under the influence of the elastic acting force of the second spring 9, and drives the push rod assembly 1 and the movable contact 7 to move downward, since the insulating base 101 is connected to the auxiliary movable spring 2, the descending of the insulating base 101 also drives the auxiliary movable spring 2 to descend, the descending of the push rod assembly 1 separates the movable contact 7 from the stationary contact 8, and the main circuit is disconnected. Similarly, each third portion 202 of the auxiliary movable spring piece 2 also moves down to contact the auxiliary stationary contact 4, and the auxiliary contact circuit is electrically conducted.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (15)

1. Auxiliary contact structure, its characterized in that: including setting up in the inside assistance of explosion chamber and touching subassembly, main subassembly and the mechanism that separates the arc, assist and touch the subassembly including the supplementary stationary contact and the supplementary movable contact spring that cooperate and use, the main subassembly that touches includes movable contact and stationary contact, separate the arc mechanism set up in main subassembly and the assistance touches between the subassembly and is used for keeping apart the main contact electric arc, the auxiliary contact structure still includes the drive the catch bar subassembly that supplementary movable contact spring removed, the catch bar subassembly is connected the movable contact, supplementary movable contact spring is connected the catch bar subassembly.

2. An auxiliary contact structure as defined in claim 1, wherein: the auxiliary movable spring plate comprises a first part, a third part and a second part, the first part is used for being connected with the push rod assembly, the third part is used for being matched with the auxiliary static contact, the second part is located between the first part and the third part, the first part is lower than the third part, and the first part and the third part are arranged in a non-parallel mode.

3. An auxiliary contact structure as defined in claim 2, wherein: the first portion is provided with at least one first hole.

4. An auxiliary contact structure as defined in claim 2, wherein: one end of the second portion, which is far away from the first portion, is provided with a bending portion.

5. An auxiliary contact structure as defined in claim 4, wherein: the bending direction of the bending part is the same as the direction of the auxiliary stationary contact extending into the arc extinguish chamber.

6. An auxiliary contact structure as defined in claim 4, wherein: the bending direction of the bending part is different from the direction in which the auxiliary stationary contact extends into the arc extinguish chamber.

7. An auxiliary contact structure as defined in claim 1, wherein: the arc extinguish chamber is formed by a closed space formed by connecting a ceramic body and a yoke plate, the fixed contact of the main contact assembly and the auxiliary fixed contact both extend into the arc extinguish chamber, and the movable contact of the main contact assembly and the auxiliary movable spring are arranged in the arc extinguish chamber.

8. An auxiliary contact structure as in claim 7, wherein: the auxiliary stationary contact is connected with the ceramic body.

9. An auxiliary contact structure as in claim 7, wherein: and the auxiliary stationary contact is connected with the yoke plate through the ceramic cylinder.

10. An auxiliary contact structure as in claim 8, wherein: separate arc mechanism and include the first insulation frame of being connected with the yoke board, first insulation frame includes first body and connects the first curb plate of first body both sides still connects the baffle between two first curb plates, set up the second hole that can supply supplementary stationary contact to pass on the baffle, every it is protruding that the second is connected in the outside of first curb plate, set up the third hole in the second arch.

11. An auxiliary contact structure as in claim 10, wherein: the frame body is further provided with a first extending portion, the first extending portion is arranged close to the yoke iron plate, and a first opening for the auxiliary movable spring to extend out is formed between the first extending portion and each first side plate.

12. An auxiliary contact structure as in claim 9, wherein: the arc isolating mechanism comprises a second insulating frame connected with the yoke plate, the second insulating frame comprises a second frame body and second side plates connected with two sides of the second frame body, the outer side of each second side plate is connected with a third bulge, and a fourth hole is formed in each third bulge; and a second extending part is further arranged on the second frame body, and a second opening for the auxiliary movable spring leaf to extend out is formed between the second extending part and each second side plate.

13. An auxiliary contact structure as in claim 7, wherein: the surface of the yoke iron plate is provided with a plurality of convex hulls.

14. An auxiliary contact structure as defined in claim 1, wherein: the push rod assembly comprises an insulating seat and a push rod connected with one end of the insulating seat, and the other end of the insulating seat is connected with the movable contact through a support.

15. A relay, characterized by: the auxiliary contact structure comprises the auxiliary contact structure as claimed in any one of claims 1 to 14, and an electromagnetic driving assembly for driving the push rod assembly to move.

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