CN221125827U - Moving contact assembly and direct current contactor - Google Patents

Abstract

The utility model provides a moving contact subassembly and direct current contactor, belongs to contactor technical field, is in including push rod and setting contact support on the push rod, the contact support includes support roof and support curb plate, the support roof with the support curb plate is connected, be provided with the yoke on the support roof, the below of support roof is provided with armature and moving contact, armature with be provided with contact spring between the push rod. According to the application, the magnetic yoke is arranged on the support top plate, so that when impact current is generated in a circuit, the downward electromagnetic attraction force of the magnetic yoke can directly act on the support top plate of the contact support, thereby preventing the magnetic yoke from falling off the support and having high reliability.

Description

Moving contact assembly and direct current contactor

Technical Field

The utility model relates to the technical field of contactors, in particular to a moving contact assembly and a direct current contactor.

Background

The direct current relay (or contactor) is a circuit switch with a control switching-on and switching-off function, is mainly applied to the fields of new energy automobiles and quick charging piles, and is a core element of the new energy automobiles and the quick charging piles.

The existing direct current contactor is characterized in that a magnetic yoke connected with a support is arranged at the lower end of the support, and when impact current is generated in a circuit, downward electromagnetic suction force can be generated due to the action of electromagnetic force, and the magnetic yoke is at risk of falling out of the support.

Therefore, there is a need to develop a moving contact assembly and a dc contactor to solve the problems in the prior art.

Disclosure of utility model

The utility model aims to provide a moving contact assembly and a direct current contactor, wherein a magnetic yoke is arranged on the upper surface of a contact support, so that the problem that the magnetic yoke arranged at the lower end of the support can fall off from the support when impact current is generated by a circuit in the prior art is solved.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The movable contact assembly comprises a push rod and a contact support arranged on the push rod, wherein the contact support comprises a support top plate and a support side plate, the support top plate is connected with the support side plate, a magnetic yoke is arranged on the upper surface of the support top plate, an armature and a movable contact are arranged below the support top plate, and a contact spring is arranged between the armature and the push rod.

Further, a first limit structure is arranged on the contact support, a second limit structure matched with the first limit structure is arranged on the magnetic yoke, and the contact support and the magnetic yoke are riveted through the first limit structure and the second limit structure.

Further, limit structure one is spacing hole, limit structure two is for setting up limit protrusion of yoke lower surface, limit protrusion penetrates in the spacing hole, optionally, the yoke passes through limit protrusion with the contact support riveting.

Further, at least two limiting holes are formed, and at least two limiting protrusions are also formed.

Further, a third limit structure is arranged on the moving contact, the third limit structure is matched with the second limit structure and the first limit structure, the third limit structure can avoid a protruding portion after the limit protrusion is riveted with the limit hole, and the moving contact is limited to perform horizontal movement relative to the contact support to a certain extent.

Further, the third limiting structure is a limiting pit, and the limiting protrusion penetrates through the limiting hole and then enters the limiting pit.

Further, the armature comprises an armature bottom and an armature side, the moving contact is arranged on the upper surface of the armature bottom, the support top plate is matched with the armature side, and the armature side is provided with a side recess for accommodating the support top plate.

Further, at least two connecting portions are arranged on two sides of the support top plate, side portions of the two armatures are provided with side portion concave portions matched with the connecting portions, and the connecting portions penetrate through the concave portions to be connected with the support side plates.

Further, the lower surface of the armature is provided with a limiting convex hull, and the limiting convex hull is used for limiting the horizontal movement of the upper end of the contact spring.

The direct current contactor comprises the movable contact assembly.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the magnetic yoke is arranged on the support top plate, when impact current is generated in a circuit, the downward electromagnetic attraction force of the magnetic yoke can directly act on the support top plate of the contact support, so that the magnetic yoke is prevented from falling off from the support, the number of first limiting structures and second limiting structures which need to be riveted is reduced, the assembly process is quickened, the assembly efficiency is improved, the limit holes and limit protrusions can be reduced to two, the magnetic resistance of the magnetic yoke is smaller, the magnetic conductivity is better, and the impact current resistance is stronger.

Other features and advantages of the present utility model will be disclosed in the following detailed description of the utility model and the accompanying drawings.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic illustration of the connection of the carrier top plate to the armature side plate;

FIG. 3 is a cross-sectional view of the structure of the present utility model;

fig. 4 is an enlarged view of a partial cross-sectional structure at a second view angle.

The reference numerals in the drawings are as follows: 1. a push rod; 21. a bracket top plate; 211. a connection part; 212. a limiting hole; 22. a bracket side plate; 3. a yoke; 31. a limit protrusion; 41. the bottom of the armature; 411. armature pit; 412. limiting convex hulls; 42. an armature side; 421. a side recess; 5. a moving contact; 51. limiting pits; 52. a contact convex hull; 6. and a contact spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The moving contact assembly comprises a push rod 1 and a contact support arranged on the push rod 1, wherein the contact support comprises a support top plate 21 and a support side plate 22, the support top plate 21 is connected with the support side plate 22, two ends of the push rod 1 are respectively clamped with the support side plate 22, a magnetic yoke 3 is arranged on the upper surface of the support top plate 21, an armature and a moving contact 5 are connected to the lower surface of the support top plate 21, and a contact spring 6 is arranged between the armature and the push rod 1.

One end of the contact spring 6 abuts against the lower surface of the armature, and the other end abuts against the upper surface of the push rod 1, so that the armature abuts against the moving contact 5, and the moving contact 5 abuts against the bracket top plate 21 to limit the up-and-down movement of the moving contact 5 and the armature.

The armature is concave and comprises an armature bottom 41 and two armature side parts 42, and the moving contact 5 is arranged on the upper surface of the armature bottom 41, and two sides of the moving contact are respectively connected with the two side parts. The armature cooperates with the magnetic yoke 3 to form a magnetic conduction loop.

The carrier top plate 21 is connected to the armature side 42.

Optionally, the two armature side portions 42 are provided with side recesses 421 matching with the bracket top plate 21, in this embodiment, at least two connection portions 211 are provided on two sides of the bracket top plate 21, the two armature side portions 42 are provided with side recesses 421 matching with the connection portions 211, and the connection portions 211 pass through the side recesses 421 to connect with the bracket side plates 22. The provision of the two connecting portions 211 can reduce the area of the armature side surface covered by the bracket top plate 21 to increase the contact area of the armature with the yoke 3.

The contact support is provided with a first limit structure, the magnetic yoke 3 is provided with a second limit structure matched with the first limit structure, the first limit structure is connected with the second limit structure, and the contact support and the magnetic yoke 3 are riveted through the first limit structure and the second limit structure.

In this embodiment, the first limiting structure is a limiting hole 212, the second limiting structure is a limiting protrusion 31 disposed on the lower surface of the magnetic yoke 3, and the limiting protrusion 31 penetrates into the limiting hole 212. Optionally, at least two limiting holes 212 are provided, and at least two limiting protrusions 31 are provided, so as to further limit the horizontal rotation of the yoke 3 relative to the contact support.

According to the application, at least two limiting holes 212 and limiting protrusions 31 are required, the limiting holes 212 and the limiting protrusions 31 are linearly distributed and are parallel to the magnetic force line direction on the magnetic yoke 3, so that the magnetic resistance of the part is smaller, the magnetic conductivity is better, and the anti-impact current capability is stronger. The direction of the magnetic force lines is the prior art, and the application is not repeated.

The movable contact 5 is provided with a third limiting structure, the third limiting structure is matched with the second limiting structure and the first limiting structure, and the third limiting structure is used for giving way for the second limiting structure.

The third limiting structure is a limiting pit 51, and is disposed on the upper surface of the moving contact 5, the number of the limiting pits 51 is the same as the number of the limiting protrusions 31, and the limiting protrusions 31 penetrate through the limiting holes 212 and then enter the limiting pits 51.

The lower surface of the moving contact 5 is provided with a contact convex hull 52, the upper surface of the armature is provided with armature pits 411 matched with the contact convex hull 52, the armature pits are distributed in a straight line and are parallel to the magnetic force line direction, and the contact convex hull 52 and the armature pits 411 are used for limiting the horizontal movement of the moving contact 5 relative to the armature. The armature is limited by the contact convex hull 52 and the armature pit 411, and compared with the armature and the moving contact 5 which are perforated in the middle, the armature has larger magnetic flux and stronger anti-impact current capacity; the cross section area of the movable contact 5 is larger, the current carrying capacity is stronger, the product temperature rise is lower, and the performance is stronger.

The lower surface of the armature is provided with a limiting convex hull 412, and the upper end of the contact spring 6 is limited to horizontally move by the limiting convex hull 412. In this embodiment, two limiting convex hulls 412 are provided, which are distributed in a straight line and are consistent with the direction of the magnetic force lines.

The direct current contactor comprises the movable contact assembly.

The utility model provides a moving contact assembly and a direct current contactor, which have the advantages of simple structure, convenient use and high reliability.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (10)

1. The movable contact assembly is characterized by comprising a push rod and a contact support arranged on the push rod, wherein the contact support comprises a support top plate and a support side plate, the support top plate is connected with the support side plate, a magnetic yoke is arranged on the support top plate, an armature and a movable contact are arranged below the support top plate, and a contact spring is arranged between the armature and the push rod.

2. The movable contact assembly according to claim 1, wherein a first limiting structure is arranged on the contact support, a second limiting structure matched with the first limiting structure is arranged on the magnetic yoke, and the contact support and the magnetic yoke are riveted through the first limiting structure and the second limiting structure.

3. The movable contact assembly according to claim 2, wherein the first limiting structure is a limiting hole, the second limiting structure is a limiting protrusion arranged on the lower surface of the magnetic yoke, and the limiting protrusion penetrates into the limiting hole.

4. A moving contact assembly according to claim 3, wherein at least two of the limit holes are provided, and at least two of the limit protrusions are provided.

5. A moving contact assembly according to claim 3, wherein a third limit structure is provided on the moving contact, and the third limit structure cooperates with the second limit structure and the first limit structure to limit the horizontal movement of the moving contact relative to the contact support.

6. The movable contact assembly according to claim 5, wherein the third limiting structure is a limiting pit, and the limiting protrusion penetrates through the limiting hole and then enters the limiting pit.

7. The moving contact assembly of claim 1, wherein the armature comprises an armature bottom and an armature side, the moving contact being disposed on an upper surface of the armature bottom, the bracket top plate being connected to the armature side; the side of the armature is provided with a side recess matched with the bracket top plate.

8. The movable contact assembly according to claim 7, wherein at least two connecting portions are provided on both sides of the top plate of the bracket, side recesses are provided on both armature sides to be fitted with the connecting portions, and the connecting portions pass through the side recesses to be connected with the side plates of the bracket.

9. The movable contact assembly according to claim 7, wherein a lower surface of the armature is provided with a limit protrusion for limiting horizontal movement of an upper end of the contact spring.

10. A direct current contactor comprising a moving contact assembly according to any one of claims 1 to 9.