CN221079847U

CN221079847U - Copper stud with silver contact

Info

Publication number: CN221079847U
Application number: CN202323120121.3U
Authority: CN
Inventors: 刘杰召; 符前华; 刘杰超
Original assignee: Yueqing Yinhe Electrical Materials Co ltd
Current assignee: Yueqing Yinhe Electrical Materials Co ltd
Priority date: 2023-11-17
Filing date: 2023-11-17
Publication date: 2024-06-04
Anticipated expiration: 2033-11-17

Abstract

The utility model discloses a copper stud with silver contacts, which comprises: the top surface of the stud body is provided with a containing cavity; the top surface of the first component is provided with a silver layer, and the first component is accommodated in the accommodating cavity; one of the accommodating cavity and the first component is provided with a rivet column, and the other one of the accommodating cavity and the first component is provided with a positioning hole matched with the rivet column; the stud body is riveted and fixed with the first component, and after riveting is finished, the top surface of the silver layer exceeds the top surface of the stud body. The riveting and fixing process is adopted, high-temperature heating is not needed, waste gas is not generated, and the method is environment-friendly and safe. The riveting process is simple and easy to operate, high in efficiency and lower in cost than a welding process. And secondly, the thickness and the material of the silver layer on the top surface of the first component can be freely switched according to the design requirement of the product, the quantity is not limited, the material cost of the contact is effectively controlled, and the waste of noble metal silver caused by excessive quality is avoided.

Description

Copper stud with silver contact

Technical Field

The utility model relates to the technical field of electricity, in particular to a copper stud with a silver contact.

Background

Copper studs are used in electrical fields, such as high-voltage dc contactors or dc relays or dc switches or medium-low voltage electrical appliances, mainly for internal electrical connection on-off effects. In order to improve the electrical connection effect, a layer of silver contact or composite silver sheet is welded on the top surface of the copper stud, and a silver layer is also considered to be arranged on the top surface of the copper stud. The top surface of the silver contact here exceeds the top surface of the copper stud so that the location of the electrical connection is on the silver contact and the silver contact does not entirely cover the top surface of the entire copper stud (reducing cost).

In the prior art, the electric connection effect between the copper stud and the silver contact is formed in a welding mode. However, the welding process has the defects that 1. High temperature is needed in the welding process, and in the process of heating solder, copper studs and silver contacts at high temperature, gas which is not environment-friendly is generated, and meanwhile, potential safety hazards exist in the processing process due to the high temperature; 2. the welding process has low efficiency and high welding processing cost; 3. the welding process is adopted, the flat silver contacts are produced in small batches, the cost is high, and the flat silver contacts have no flexibility for producing small-scale electrical products with differentiation.

Disclosure of utility model

Therefore, the technical problem to be solved by the utility model is how to realize the connection and fixation between the copper stud and the silver contact. To this end, a copper stud with silver contacts, comprising:

the top surface of the stud body is provided with a containing cavity;

The top surface of the first component is provided with a silver layer, and the first component is accommodated in the accommodating cavity;

One of the accommodating cavity and the first component is provided with a rivet column, and the other one of the accommodating cavity and the first component is provided with a positioning hole matched with the rivet column;

The stud body is riveted and fixed with the first component, and after the riveting is finished, the top surface of the silver layer exceeds the top surface of the stud body.

The top surface of the stud body is provided with a bulge, and the bulge deforms in the riveting process and is riveted and fixed with the side surface of the first component.

The side surface of the bulge, which is close to the accommodating cavity, is a vertical surface or an inclined surface.

The cross section of the bulge is right trapezoid, right triangle or right rectangle.

The side surface, far away from the accommodating cavity, of the protrusion is a first inclined surface, and an included angle formed by the first inclined surface and the top surface of the stud body is an acute angle.

And one side surface of the protrusion, which is far away from the accommodating cavity, is connected with the side wall of the stud body.

And a gap is arranged between the first part and the inner wall of the accommodating cavity before riveting.

The rivet column is in interference fit with the positioning hole.

The technical scheme of the utility model has the following advantages:

1. The copper stud with the silver contact provided by the utility model adopts a riveting and fixing process, and is free from high-temperature heating and waste gas generation, so that the copper stud is environment-friendly and safe. The riveting process is simple and easy to operate, high in efficiency and lower in cost than a welding process. And secondly, the thickness and the material of the silver layer on the top surface of the first component can be freely switched according to the design requirement of the product, the quantity is not limited, the cost of the contact is effectively controlled, and the waste of noble metal silver caused by excessive quality is avoided. The rivet post and the setting of locating hole realize fixed effect in location, prevent that first part from taking place to deviate at the riveting in-process, influence the concentricity between the two.

2. According to the copper stud with the silver contact, provided by the utility model, the protrusions are arranged, and deformation shrinkage occurs in the riveting process so as to hold the upper end of the first component, and meanwhile, the contact area between the copper stud and the first component can be increased, the overvoltage capacity is enhanced, and the internal resistance of the element is reduced.

3. According to the copper stud with the silver contact, the vertical surface is arranged, the bulge processing is more convenient, the vertical surface is easier to deform in the riveting process, and the force generated by riveting can drive the vertical surface to deform towards one side of the accommodating cavity, so that the riveting effect is better realized.

4. The copper stud with the silver contact provided by the utility model has the advantages that the riveting effect is better realized due to the arrangement of the shape.

5. According to the copper stud with the silver contact, provided by the utility model, the acute angle is limited, so that force generated by riveting is applied to the protrusion, particularly the first inclined surface, and part of force is moved towards one side of the accommodating cavity through force decomposition, so that the integral riveting effect is improved.

6. According to the copper stud with the silver contact, provided by the utility model, due to the arrangement of the gaps, deformation generated by riveting is better attached to the side surface of the first component, and a fixing effect is formed.

7. According to the copper stud with the silver contact, the rivet column and the positioning hole are firmly attached through interference fit, the contact area between the stud body and the first component is increased, and the overall current resistance level is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a cross-sectional view of a copper stud with silver contact provided by the utility model before riveting;

FIG. 2 is a cross-sectional view of a copper stud with silver contact according to the present utility model;

FIG. 3 is a cross-sectional view of a copper stud with silver contact according to the present utility model prior to riveting in another configuration;

FIG. 4 is a cross-sectional view of an alternate embodiment of a riveted copper stud with silver contacts in accordance with the present utility model;

FIG. 5 is a cross-sectional view of a copper stud with silver contact prior to riveting in another configuration in accordance with the present utility model;

Fig. 6 is a cross-sectional view of another embodiment of a riveted copper stud with silver contacts according to the present utility model.

Reference numerals illustrate:

11. A stud body; 12. a first component; 13. a protrusion; 14. a rivet post; 15. positioning holes; 17. an engagement portion; 111. a receiving chamber; 121. a silver layer; 131. a vertical plane; 132. a first inclined surface;

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. 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 description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. 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 utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

This embodiment provides a copper stud with silver contacts, as shown in fig. 1-4, comprising:

The stud body 11 has a receiving cavity 111 on its top surface, where the receiving cavity 111 is opened upward to form a communication effect with the outside. The accommodating cavity 111 extends towards the lower side of the stud body 11, and the depth of the accommodating cavity 111 can be adjusted according to practical requirements.

The first component 12 has a silver layer 121 on its top surface, where the silver layer 121 is processed by a cold header of a cold press welding process, so that the silver layer 121 is firmly fixed with the first component 12. The first part 12 is accommodated in the accommodating cavity 111, specifically, the first part 12 is partially or completely located in the accommodating cavity 111, where before riveting, the top surface of the first part 12 may be coplanar with the top surface of the stud body 11, the top surface of the first part 12 may also exceed the top surface of the stud body 11, and the top surface of the first part 12 may also be lower than the top surface of the stud body 11.

One of the receiving cavity 111 and the first member 12 is provided with a rivet stem 14, and the other of the receiving cavity 111 and the first member 12 is provided with a positioning hole 15 which is matched with the rivet stem 14. The arrangement of the rivet post 14 and the positioning hole 15 achieves the effect of positioning and fixing, and prevents the first component 12 from deviating in the riveting process, so that the concentricity between the rivet post and the positioning hole is affected. When the rivet stem 14 is provided in the accommodating chamber 111, the positioning hole 15 is provided in the first member 12, and when the positioning hole 15 is provided in the accommodating chamber 111, the rivet stem 14 is provided in the first member 12.

The stud body 11 is riveted and fixed with the first component 12, and the riveting and fixing can be that the stud body 11 is deformed or the first component 12 is deformed, so that riveting between the stud body and the first component 12 is formed. After the riveting is completed, the first part 12 is partially riveted with the stud body 11, and the rest part extends upwards, so that the top surface of the silver layer 121 exceeds the top surface of the stud body 11, and when the electrical connection occurs, the moving contact in the electrical product is abutted against the silver layer 121, but not against the top surface of the stud body 11. The height of the top surface of the silver layer 121 above the top surface of the stud body 11 can be adjusted according to practical requirements.

The riveting and fixing process is adopted, high-temperature heating is not needed, waste gas is not generated, and the method is environment-friendly and safe. The riveting process is simple and easy to operate, high in efficiency and lower in cost than a welding process. Secondly, the thickness and the material of the silver layer 121 on the top surface of the first component 12 can be freely switched according to the design requirement of the product, so that the mobility of the product for producing a small amount of differentiated electric products is better, the product is more flexible, the product is not limited by quantity, the cost of the contact is effectively controlled, and the waste of noble metal silver caused by excessive quality is avoided.

Specifically, as shown in fig. 1, the top surface of the stud body 11 is provided with a protrusion 13, where the protrusion 13 is located at the edge of the top surface of the accommodating chamber 111. The protrusion 13 deforms during the riveting process, and in short, the riveting device drives the protrusion 13 to deform during the riveting process, and the protrusion 13 and the side surface of the first component 12 form riveting fixation after deforming. The protrusion 13 is arranged to deform during the riveting process, thereby improving the connection strength and contact area between the stud body 11 and the first member 12. In addition to the present embodiment, the position on the first member 12 may be deformed by the riveting force, so as to achieve the effect of riveting and fixing between the first member 12 and the stud body 11, for example, after riveting, the edge deformation of the first member 12 abuts against the inner wall of the accommodating cavity 111 to form the riveting and fixing effect.

Specifically, as shown in fig. 1, a side surface of the protrusion 13 adjacent to the accommodating chamber 111 is a vertical surface 131. The vertical surface 131 is arranged, the processing of the bulge 13 is more convenient, in addition, the vertical surface 131 is easier to deform in the riveting process, and the force generated by riveting can drive the vertical surface 131 to deform towards one side of the accommodating cavity 111, so that the riveting effect is better realized. Further, here the vertical surface 131 is arranged coplanar with the inner wall of the accommodation chamber 111. In addition, a side surface of the protrusion 13 near the accommodating chamber 111 may be an inclined surface, and the inclined surface is inclined from the top end to the lower outer side, so that the accommodating chamber 111 forms a truncated cone shape with a small top and a large bottom.

Specifically, the cross section of the protrusion 13 is a right trapezoid or a right triangle or a right rectangle. The setting of shape, better realization riveting effect. The right trapezoid differs from the right triangle in that the top surface of the protrusion 13 is a plane and the other is a point. The adjustment can be selected according to the actual requirements.

Specifically, as shown in fig. 1, a side surface of the protrusion 13 away from the accommodating cavity 111 is a first inclined surface 132, and an included angle formed by the first inclined surface 132 and the top surface of the stud body 11 is an acute angle. The definition of the acute angle causes the force generated by the riveting to be exerted on the protrusion 13, in particular on the first inclined surface 132, and by the decomposition of the force, part of the force is moved towards the side of the housing cavity 111, improving the overall riveting effect. It should be noted that, the first inclined surface 132 is not connected to the side wall of the stud body 11, the first inclined surface 132 is still connected to the top surface of the stud body 11, and the connection point is spaced from the side wall of the stud body 11 by a certain distance.

Specifically, as shown in fig. 1, a gap is provided between the first member 12 and the inner wall of the receiving chamber 111 before riveting. The gap is arranged, so that deformation generated by riveting is better attached to the side face of the first component 12, and a fixing effect is formed. The size of the gap is set according to the deformation amount of riveting, otherwise, the gap is too large, and the first part 12 and the stud body 11 can fall off and separate after riveting; or the gap is too small, the first part 12 can be extruded from the stud body 11 in the riveting process, and the riveting efficiency is affected.

Specifically, as shown in FIGS. 1-2, the rivet stem 14 is an interference fit with the locating hole 15. The interference fit's setting for firmly laminate between rivet post 14 and the locating hole 15, increased the area of contact between the double-screw bolt body 11 and the first part 12 simultaneously, improved holistic current-resistant level.

Specifically, as shown in fig. 2, the first member 12 is a circular truncated cone. The round table is arranged to form a structure with a large lower part and a small upper part, so that the lower end part is wrapped in the riveting process, and the first part 12 and the stud body 11 are firmly fixed. The outer side surface of the first component 12 is an inclined surface, the protrusion 13 is deformed under force in the riveting process, and meanwhile, the top surface of the stud body 11 is also driven to locally deform, the deformation generates a clamping part 17, the clamping part 17 extends radially or irregularly towards the central position of the accommodating cavity 111, the clamping part 17 is firmly fixed with the inclined surface of the first component 12, and even the riveting force drives the inclined surface of the first component 12 to also partially deform, so that the first component 12 is firmly fixed with the stud body 11. Since the specific shape of deformation caused by the riveting force is not controllable, only one deformed shape in the drawings is shown in the embodiment.

Specifically, in the present embodiment, the first component 12 is made of copper, the silver layer 121 is processed on the top surface of the first component 12 by a cold header of a cold welding process, and the silver layer 121 covers the top surface of the first component 12, so the thickness and the material of the silver layer 121 can be adjusted according to practical situations. The stud body 11 is also made of copper or copper alloy. Further, the first part 12 and the stud body 11 may be of the same copper type, and may be brass or copper. In addition, the copper type of the first part 12 and the stud body 11 may be different. The first component 12 and the stud body 11 are made of conductive materials, and a person skilled in the art can adjust the materials according to actual requirements.

Specifically, as shown in fig. 1, in the structure before riveting, the first part 12 is pressed into the accommodating cavity 111, so that the rivet stem 14 and the positioning hole 15 form positioning fit, and the top surface of the silver layer 121 exceeds the top surface of the stud body 11. As shown in fig. 2, in the structure after the riveting is completed, the riveting force drives the protrusion 13 to deform under force, so that the first component 12 and the stud body 11 are riveted and fixed. When it is noted, the riveting force does not act on the silver layer 121, so that the silver layer 121 is not affected during the riveting process.

Example 2

The present embodiment provides a copper stud with silver contact, as shown in fig. 5-6, the difference between embodiment 2 and embodiment 1 is that the side of the protrusion 13 away from the accommodating cavity 111 is connected with the sidewall of the stud body 11, specifically, the side of the protrusion 13 away from the accommodating cavity 111 is coplanar with the sidewall of the stud body 11. Therefore, after riveting, the riveting force drives the bulge 13 to deform, so that a necking clamping structure is formed, and the connecting and fixing effect between the first part 12 and the stud body 11 is realized. Besides, a side surface of the protrusion 13 far away from the accommodating cavity 111 and a side wall of the stud body 11 may be connected by an inclined plane, which only needs to ensure that the riveting pressure can drive the protrusion 13 to deform.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims

1. A copper stud with a silver contact, comprising:

the stud body (11) is provided with a containing cavity (111) on the top surface;

A first component (12) with a silver layer (121) on the top surface, wherein the first component (12) is accommodated in the accommodating cavity (111);

a rivet column (14) is arranged on one of the accommodating cavity (111) and the first component (12), and a positioning hole (15) matched with the rivet column (14) is arranged on the other one of the accommodating cavity (111) and the first component (12);

The stud body (11) and the first component (12) are riveted and fixed, and after riveting is completed, the top surface of the silver layer (121) exceeds the top surface of the stud body (11).

2. Copper stud with silver contact according to claim 1, characterized in that the top surface of the stud body (11) is provided with a protrusion (13), which protrusion (13) is deformed during the riveting process and is riveted to the side surface of the first part (12).

3. Copper stud with silver contact according to claim 2, characterized in that the side of the projection (13) adjacent to the receiving cavity (111) is a vertical (131) or inclined surface.

4. A copper stud with silver contacts according to claim 3, characterized in that the cross section of the protrusion (13) is right trapezoid or right triangle or right rectangle.

5. Copper stud with silver contact according to claim 2 or 3 or 4, characterized in that the side of the projection (13) facing away from the receiving cavity (111) is a first inclined surface (132), the first inclined surface (132) forming an acute angle with the top surface of the stud body (11).

6. Copper stud with silver contact according to claim 5, characterized in that a side of the projection (13) remote from the receiving cavity (111) is connected with a side wall of the stud body (11).

7. Copper stud with silver contact according to claim 1, characterized in that a gap is provided between the first part (12) and the inner wall of the receiving cavity (111) before riveting.

8. Copper stud with silver contact according to claim 1, characterized in that the rivet stem (14) is an interference fit with the positioning hole (15).