CN217749812U

CN217749812U - Resistance welding mechanism for contact assembly

Info

Publication number: CN217749812U
Application number: CN202221699201.1U
Authority: CN
Inventors: 郑晓瑞; 陈海津
Original assignee: Yihua Holding Group Co ltd
Current assignee: Yihua Holding Group Co ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-11-08
Anticipated expiration: 2032-06-30

Abstract

The utility model provides a resistance welding mechanism for contact subassembly is suitable for and assembles the contact subassembly, and the contact subassembly includes contact seat and moving contact, and the moving contact has the first section with the assembly of contact seat to and stretch out the second section of contact seat, resistance welding mechanism includes: a work table; the clamp is arranged on the workbench and is suitable for fixing the contact seat; the electrode assembly comprises an upper electrode and a lower electrode which are respectively arranged on the upper side and the lower side of the movable contact, the upper electrode is arranged opposite to the first section, and the lower electrode is arranged opposite to the second section; the first driving piece is connected with the upper electrode and is suitable for driving the upper electrode to be in contact with or separated from the first section; and the pressing block component is provided with a pressing block arranged on one side of the second section, which is far away from the lower electrode, and a second driving piece which is suitable for driving the pressing block to move so as to enable the second section to be attached and abutted to the lower electrode. The resistance welding process is simple and is suitable for mass production; in addition, the pressing block can enable the second section to be tightly attached to the lower electrode, and therefore the welding effect is better.

Description

Resistance welding mechanism for contact assembly

Technical Field

The utility model relates to a miniature circuit breaker production technical field, concretely relates to resistance welding mechanism for contact subassembly.

Background

The moving contact and the contact seat of the conventional miniature circuit breaker are generally assembled together through a hot riveting process, the moving contact is made of red copper, the contact seat is made of nylon PA46, the nylon PA46 has good high temperature resistance, the melting point of the nylon PA46 reaches 295 ℃, so that the hot riveting process is adopted, under the condition that continuous temperature at least not lower than 295 ℃ needs to be provided for two objects, certain pressure is applied and the objects are kept for a period of time, the red copper and the nylon PA46 can be fused, namely, the red copper and the nylon PA46 can be fused only through heating and pressurizing, the process has higher requirements and is more complex, and the miniature circuit breaker is not suitable for mass production. Therefore, it is necessary to design a mechanism that has a simple process and can be used for mass production of the movable contact and the contact block.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming moving contact among the prior art and contact seat through the hot riveting technology assembly, lead to the technological requirement than more and loaded down with trivial details, unsuitable for mass production's defect to provide a simple process, can carry out mass production to moving contact and contact seat and be used for contact subassembly's resistance welding mechanism.

Therefore, the utility model provides a resistance welds mechanism for contact subassembly is suitable for and assembles contact subassembly, and contact subassembly includes contact seat and moving contact, the moving contact have with the first section of contact seat assembly, and stretch out the second section of contact seat, resistance welds the mechanism and includes: a work table; the clamp is arranged on the workbench and is suitable for fixing the contact seat; the electrode assembly comprises an upper electrode and a lower electrode which are respectively arranged on the upper side and the lower side of the movable contact, the upper electrode is arranged opposite to the first section, and the lower electrode is arranged opposite to the second section; the first driving piece is connected with the upper electrode and is suitable for driving the upper electrode to be in contact with or separated from the first section; and the pressing block component is provided with a pressing block which is arranged on one side of the second section, which is far away from the lower electrode, and a second driving piece which is suitable for driving the pressing block to move so as to enable the second section to be abutted to the lower electrode in an attaching manner.

The pressing block comprises a first pressing block part and a second pressing block part, wherein the first pressing block part is arranged opposite to the second section, and the second pressing block part extends to the middle connection position of the second section and the first section.

Still include to be suitable for to the briquetting go on leading subassembly, the guide subassembly includes: the guide column is vertically arranged on the workbench; and perforating, forming on the pressing block, and allowing the guide column to penetrate through.

The jig includes: the clamping block is suitable for mounting the contact seat on the clamping block; the clamping seat is detachably assembled with the clamping block and is provided with a mounting groove suitable for mounting the clamping block and the contact seat.

A first insulating pad is arranged on the table top of the workbench.

And a second insulating pad is arranged between the lower electrode and the clamp.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a resistance welding mechanism for contact subassembly, because the contact seat is non-conductive, the inventor is through the position that changes upper electrode and bottom electrode, make the first section of upper electrode and moving contact set up relatively, the bottom electrode sets up with the second section of moving contact relatively, when the welding, the earlier drive briquetting downstream of second driving piece, the briquetting butt is on the second section of moving contact, and make second section and bottom electrode laminating offset, then the upper electrode offsets with first section under the effect of first driving piece, make upper electrode and bottom electrode switch on, thereby utilize the resistance heat that the electric current produced through the moving contact as the heat source, heat the contact seat in the twinkling of an eye and make it melt, in order to realize the integration of moving contact and contact seat. The resistance welding process is simple and is suitable for mass production; in addition, the briquetting can make second section and bottom electrode closely laminate, avoids taking place to beat and leads to the problem that the second section and the bottom electrode of moving contact appear contact effect not good because of the moving contact when upper electrode contacts with first section, and welding effect is better like this.

2. The utility model provides a resistance welding mechanism for contact subassembly, the briquetting include the relative first briquetting portion that sets up with the second section to and extend to the second briquetting portion of second section and first section intermediate junction department, thereby make the movable contact closely laminate with contact seat and bottom electrode respectively, guaranteed the welding effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view of a resistance welding mechanism for a contact assembly of the present invention;

FIG. 2 is a schematic view of the assembly of the electrode assembly and the fixture, press block;

FIG. 3 is an exploded view of the electrode assembly and the clamp and press block;

fig. 4 is a schematic diagram of an exploded structure of the clamp.

Description of reference numerals: 1. a contact seat; 2. a moving contact; 3. a first stage; 4. a second stage; 5. a work table; 6. a clamp; 7. an upper electrode; 8. a lower electrode; 9. a first driving member; 10. briquetting; 11. a first press block section; 12. a second briquetting section; 13. a second driving member; 14. a guide post; 15. perforating; 16. a clamping block; 17. a holder; 18. mounting grooves; 19. a first insulating pad; 20. a second insulating pad.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Examples

The embodiment provides a resistance welding mechanism for a contact assembly, which is suitable for assembling the contact assembly, as shown in fig. 2, the contact assembly comprises a contact seat 1 and a moving contact 2, the moving contact 2 is provided with a first section 3 assembled with the contact seat 1, and a second section 4 extending out of the contact seat 1, as shown in fig. 1, the resistance welding mechanism comprises a workbench 5, a clamp 6, an electrode assembly, a pressing block assembly and a guide assembly.

The clamp 6 is arranged on the workbench 5 and is suitable for fixing the contact seat 1, as shown in fig. 4, the clamp 6 includes: a clamping block 16, which is suitable for mounting the contact seat 1 thereon; and the clamping seat 17 is detachably assembled with the clamping block 16 and is formed with a mounting groove 18 suitable for mounting the clamping block 16 and the contact seat 1.

As shown in fig. 2 and 3, the electrode assembly includes an upper electrode 7 and a lower electrode 8 respectively disposed on the upper side and the lower side of the movable contact 2, the upper electrode 7 is disposed opposite to the first section 3, the lower electrode 8 is disposed opposite to the second section 4, and a first driving member 9 is connected to the upper electrode 7 and adapted to drive the upper electrode 7 to contact with or separate from the first section 3.

The pressing block assembly, as shown in fig. 1, has a pressing block 10 disposed on a side of the second segment 4 away from the lower electrode 8, and a second driving member 13 adapted to drive the pressing block 10 to move so as to make the second segment 4 abut against the lower electrode 8. The pressing block 10 comprises a first pressing block part 11 arranged opposite to the second section 4 and a second pressing block part 12 extending to the joint between the second section 4 and the first section 3.

The guide assembly is suitable for guiding the pressing block 10 and comprises a guide column 14 which is vertically arranged on the workbench 5; and the through hole 15 is formed on the pressing block 10 and is used for the guide column 14 to penetrate through.

A first insulating pad 19 is arranged on the table-board of the working table 5, and a second insulating pad 20 is arranged between the lower electrode 8 and the clamp 6.

The utility model provides a resistance welding mechanism for contact subassembly, because contact seat 1 is non-conductive, the first section 3 cladding of moving contact 2 is on contact seat 1, to traditional resistance welding mechanism, goes up electrode and moving contact 2 contacts, and the bottom electrode contacts with contact seat 1, can not form conductive loop like this. The inventor is through changing the position of upper electrode 7 and bottom electrode 8, make upper electrode 7 set up with first section 3 of moving contact 2 relatively, bottom electrode 8 sets up with second section 4 of moving contact 2 relatively, when the welding, second driving piece 13 drives briquetting 10 downstream earlier, briquetting 10 butt is on second section 4 of moving contact 2, and make second section 4 and bottom electrode 8 laminating offset, then upper electrode 7 offsets with first section 3 under the effect of first driving piece 9, make upper electrode 7 and bottom electrode 8 switch on, thereby utilize the resistance heat that the electric current produced through moving contact 2 as the heat source, heat contact seat 1 in the twinkling of an eye and make it melt, in order to realize moving contact 2 and contact seat 1's integration. The resistance welding process is simple and is suitable for mass production; in addition, the pressing block 10 can enable the second section 4 to be tightly attached to the lower electrode 8, the problem that the contact effect between the second section 4 of the moving contact 2 and the lower electrode 8 is not good due to the fact that the moving contact 2 jumps when the upper electrode 7 is in contact with the first section 3 is avoided, and the welding effect is better.

It should be noted that resistance welding is a mature technology in the prior art, and therefore, the working principle thereof is not described in detail.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.

Claims

1. A resistance welding mechanism for a contact assembly, suitable for assembling the contact assembly, the contact assembly comprising a contact block (1) and a moving contact (2), the moving contact (2) having a first section (3) assembled with the contact block (1) and a second section (4) protruding out of the contact block (1), characterized in that the resistance welding mechanism comprises:

a work table (5);

the clamp (6) is arranged on the workbench (5) and is suitable for fixing the contact seat (1);

the electrode assembly comprises an upper electrode (7) and a lower electrode (8) which are respectively arranged on the upper side and the lower side of the moving contact (2), the upper electrode (7) is arranged opposite to the first section (3), and the lower electrode (8) is arranged opposite to the second section (4);

a first driving member (9) connected with the upper electrode (7) and suitable for driving the upper electrode (7) to be in contact with or separated from the first section (3);

the briquetting component is provided with a briquetting (10) which is arranged on one side of the second section (4) far away from the lower electrode (8), and a second driving piece (13) which is suitable for driving the briquetting (10) to move so as to enable the second section (4) to be attached and abutted to the lower electrode (8).

2. Resistance welding mechanism for contact assemblies according to claim 1, characterized in that the pressing piece (10) comprises a first pressing piece portion (11) arranged opposite the second section (4) and a second pressing piece portion (12) extending to the junction between the second section (4) and the first section (3).

3. The resistance welding mechanism for contact assemblies according to claim 1 or 2, further comprising a guide assembly adapted to guide the pressing block (10), the guide assembly comprising:

the guide post (14) is vertically arranged on the workbench (5);

and the through hole (15) is formed in the pressing block (10) and is used for the guide column (14) to penetrate through.

4. Resistance welding mechanism for contact assemblies according to claim 1, characterized in that said clamp (6) comprises:

a clamping block (16) suitable for mounting the contact seat (1) thereon;

the clamping seat (17) is detachably assembled with the clamping block (16) and is formed with a mounting groove (18) suitable for mounting the clamping block (16) and the contact seat (1).

5. An electric resistance welding mechanism for contact assemblies as claimed in claim 1, characterized in that the table top of the table (5) is provided with a first insulating pad (19).

6. A resistance welding mechanism for a contact assembly according to claim 1, characterised in that a second insulating pad (20) is provided between the lower electrode (8) and the clamp (6).