CN217655781U

CN217655781U - Silver contact

Info

Publication number: CN217655781U
Application number: CN202221559331.5U
Authority: CN
Inventors: 施焕晓; 黄卿; 侯二勇
Original assignee: Wenzhou Yinji Alloy Technology Co ltd
Current assignee: Wenzhou Yinji Alloy Technology Co ltd
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2022-10-25
Anticipated expiration: 2032-06-21

Abstract

The application relates to the technical field of conductive elements, and discloses a silver contact, which comprises a base body, a silver coating and a contact block detachably arranged on the base body, wherein the contact block comprises a conductive part, a connecting part and a positioning part which are fixedly connected in sequence, the diameter of the conductive part is larger than that of the connecting part, and the silver coating is arranged on one side, far away from the connecting part, of the conductive part; offer the spread groove that is used for supplying connecting portion embedding on the base member, offer the locating hole that is used for supplying location portion to wear out on the diapire of spread groove. This application has the effect of conveniently changing wearing and tearing back silver-plated layer.

Description

Silver contact

Technical Field

The application relates to the technical field of conductive elements, in particular to a silver contact.

Background

The contact points are crossing points for realizing the connection or disconnection of a circuit by mutual contact or separation, and are widely applied to switches, relays, cross-linking supporting points in conductive circuits and the like.

The contact of the related art generally includes a copper substrate, and a silver plating layer is provided on a surface of the substrate to enhance a conductive effect of the contact. Because the silver plating is generally thin, the silver contacts are easily worn out and even influence the conductive effect after the contacts are frequently contacted with each other.

However, since the contact is usually fixed to the terminal by riveting when in use, after the silver plating of the contact is worn, an operator needs to first disconnect the original terminal from other elements in the electrical appliance, and then connect the new terminal to other elements, which is cumbersome to operate and needs to be improved.

SUMMERY OF THE UTILITY MODEL

In order to facilitate replacement after the silver plating is worn, the application provides a silver contact.

The application provides a silver contact adopts following technical scheme:

a silver contact comprises a base body, a silver coating and a contact block detachably arranged on the base body, wherein the contact block comprises a conductive part, a connecting part and a positioning part which are fixedly connected in sequence, the diameter of the conductive part is larger than that of the connecting part, and the silver coating is arranged on one side, far away from the connecting part, of the conductive part; the base body is provided with a connecting groove for embedding the connecting part, and the bottom wall of the connecting groove is provided with a positioning hole for the positioning part to penetrate out.

By adopting the technical scheme, when the silver contact is used, the base body is fixedly connected to the terminal, and the conductive part in the contact block can be in contact with or separated from other contacts, so that the connection or disconnection of a circuit is realized. Because the silver plating layer sets up on the touch multitouch rather than the base member, after the silver plating layer wearing and tearing, operating personnel can promote location portion to one side that is close to connecting portion for connecting portion shift out the spread groove, location portion shift out the locating hole, can demolish the touch multitouch from the base member, with the intact touch multitouch of change silver plating layer, need not the whole terminal of dismouting during the change, easy and simple to handle, replacement cost are low.

Optionally, an anti-drop ring capable of generating elastic deformation is fixedly arranged on the groove wall of the connecting groove.

Through adopting above-mentioned technical scheme, when the touch multitouch links to each other with the base member, connecting portion inlay and establish in the spread groove, location portion inlay establishes in the locating hole, and the anticreep ring receives the extrusion of connecting portion can produce elastic deformation and compress tightly connecting portion to stability when improvement connecting portion inlay the dress in the spread groove.

Optionally, a plurality of fastening rings are integrally formed on the inner wall of the anti-drop ring, and a fastening ring groove for the fastening rings to deform and stretch into is formed in the circumferential side wall of the connecting portion.

Through adopting above-mentioned technical scheme, when connecting portion embedding spread groove, the fastening ring gear can correspond the card and go into in the adjacent fastening ring groove to hinder connecting portion to shift out the spread groove, further improve the stability of connecting portion.

Optionally, the longitudinal section of the fastening ring is triangular and the end close to the central axis of the anti-drop ring is a tip.

Through adopting above-mentioned technical scheme, the fastening ring gear orientation with deviate from the side of spread groove opening and be the inclined plane, this inclined plane plays the effect of direction when the fastening ring gear immigration or shift out the fastening ring groove to the dismouting of fastening ring gear influence connecting portion helps the normal split of guarantee feeler block and base member.

Optionally, a stop ring is detachably disposed on the outer side of the positioning portion, and the stop ring abuts against one side of the base body away from the conductive portion.

By adopting the technical scheme, when the silver contact is assembled, the part to be positioned penetrates out of the positioning hole, and then the stop ring can be connected to the outer side of the positioning part so as to prevent the positioning part from moving to one side close to the connecting part, and therefore the connection stability of the contact block and the base body is further improved.

Optionally, the stop ring is a rubber ring, a stop groove for the stop ring to be embedded into is formed in the circumferential side wall of the positioning portion, and the depth of the stop groove is smaller than the difference between the inner diameter and the outer diameter of the stop ring.

Through adopting above-mentioned technical scheme, the retaining ring is connected in the locking groove through the mode of self deformation, has easy dismounting, the effectual advantage of locking.

Optionally, the stop groove is provided with a plurality of stop grooves distributed along the axial direction of the positioning portion.

By adopting the technical scheme, an operator can embed the stop ring in different stop grooves during assembly so as to change the distance from the stop ring to the conductive part, thereby adapting to substrates with different lengths and having strong practicability.

Optionally, the contact block is an iron block, and the substrate is a copper block.

By adopting the technical scheme, the contact block is made of iron, and has the advantages of high compressive strength, difficult deformation and long service life. The substrate is made of copper, and has the advantage of good conductivity.

Optionally, the base member includes integrated into one piece's butt portion and installation department, be formed with the ladder face between installation department and the butt portion.

By adopting the technical scheme, when the base body is connected with the terminal, the mounting part in the base body can penetrate into the preset through hole in the terminal until the terminal is abutted against the stepped surface, and then the mounting part is fixedly connected with the hole wall of the through hole in a welding mode and the like, so that the base body is fixed on the terminal. The stepped surface is favorable for the operator to preliminarily position the base body so as to carry out subsequent welding operation.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the silver plating layer is arranged on the contact block but not on the substrate, and after the silver plating layer is worn, an operator can independently replace the contact block without disassembling and replacing the whole terminal, so that the operation is simple and convenient, and the replacement cost is low;

2. when the connecting part is embedded into the connecting groove, the fastening tooth ring is embedded into the adjacent fastening ring groove, so that the effect of improving the stability of the connecting part is achieved;

3. the stop ring is abutted against one side of the base body far away from the conductive part, and plays a role in further hindering the contact block from being separated from the base body.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

Fig. 2 is a schematic cross-sectional view of an embodiment of the present application.

Fig. 3 is an exploded view of an embodiment of the present application.

Description of the reference numerals:

1. a substrate; 11. an abutting portion; 12. an installation part; 13. a step surface; 14. connecting grooves; 15. positioning holes; 2. silver plating; 3. a contact block; 31. a conductive portion; 32. a connecting portion; 321. a fastening ring groove; 33. a positioning part; 331. a stopper groove; 4. a slip-ring prevention; 41. fastening a toothed ring; 5. and a stop ring.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a silver contact. Referring to fig. 1, the silver contact includes a substrate 1, a silver plating layer 2, and a contact block 3 detachably disposed on the substrate 1, the contact block 3 is made of iron, the substrate 1 is made of copper, and the silver plating layer 2 is fixedly disposed on the contact block 3. When the silver contact is used, the base body 1 is fixedly connected to the terminal, and after the silver plating layer 2 is worn, an operator can independently detach and replace the contact block 3 without replacing the whole terminal, so that the operation is simple and convenient, and the replacement cost is low.

Referring to fig. 1 and 2, the base 1 includes an abutting portion 11 and a mounting portion 12 which are integrally formed, the abutting portion 11 and the mounting portion 12 are coaxially disposed, and a diameter of the abutting portion 11 is larger than a diameter of the mounting portion 12, so that a stepped surface 13 is formed between the mounting portion 12 and the abutting portion 11. When base member 1 assembles in the terminal, can wear out installation department 12 earlier in the through-hole of predetermineeing on the terminal, until ladder face 13 and terminal butt, on the pore wall of through-hole is fixed in installation department 12 to modes such as rethread welding or gluing to realize the stable connection of base member 1 and terminal.

Referring to fig. 2 and 3, the contact block 3 includes a conductive portion 31, a connecting portion 32, and a positioning portion 33 integrally formed in this order, wherein the diameter of the conductive portion 31 is larger than that of the connecting portion 32, the diameter of the connecting portion 32 is larger than that of the positioning portion 33, and the silver plating layer 2 is coated on a side surface of the conductive portion 31 away from the connecting portion 32.

Referring to fig. 2 and 3, the side surface of the abutting portion 11 away from the mounting portion 12 is opened with a connecting groove 14, the inner diameter of the connecting groove 14 is larger than the diameter of the connecting portion 32 and smaller than the diameter of the conductive portion 31, and the connecting portion 32 can be fitted into the connecting groove 14. The bottom wall of the connecting groove 14 is provided with a positioning hole 15 penetrating through the mounting portion 12, the inner diameter of the positioning hole 15 is slightly larger than the diameter of the positioning portion 33, and the length of the positioning hole 15 is smaller than the length of the positioning portion 33, so that the positioning portion 33 can penetrate out of the positioning hole 15.

Referring to fig. 2 and 3, in order to improve the stability of the connection portion 32 inserted into the connection groove 14, a separation preventing ring 4 is fixed to a groove wall of the connection groove 14, and the separation preventing ring 4 is made of a rubber material capable of generating elastic deformation. A plurality of fastening toothed rings 41 are integrally formed on the inner wall of the anti-falling ring 4, the longitudinal section of each fastening toothed ring 41 is triangular, and one end of each fastening toothed ring 41 close to the central axis of the anti-falling ring 4 is a tip. Fastening ring grooves 321 equal in number to the fastening ring teeth 41 are formed in the circumferential side wall of the connecting portion 32, and the longitudinal cross section of each fastening ring groove 321 is also triangular. When the connecting portion 32 is inserted into the connecting groove 14, one end of the fastening ring gear 41 away from the anti-slip ring 4 is inserted into the adjacent fastening ring groove 321, so that the connecting portion 32 is not easily removed from the connecting groove 14.

Referring to fig. 1 and 3, a plurality of annular locking grooves 331 are formed in a circumferential side wall of the positioning portion 33, a distribution direction of the locking grooves 331 is parallel to an axial direction of the positioning portion 33, a locking ring 5 made of rubber is embedded in one of the locking grooves 331, and a difference between inner and outer diameters of the locking ring 5 is greater than a depth of the locking groove 331. When the positioning portion 33 penetrates through the positioning hole 15 and the connecting portion 32 abuts against the bottom wall of the connecting groove 14, an operator can insert the stop ring 5 into one of the stop grooves 331 of the positioning portion 33 extending out of the positioning hole 15, so that the stop ring 5 abuts against one side of the base 1 far away from the conductive portion 31, and the stop ring 5 can be used for preventing the contact block 3 from moving to the side far away from the base 1, thereby improving the connecting strength between the contact block 3 and the base 1.

The implementation principle of a silver contact in the embodiment of the application is as follows: when the silver contact is used, the base body 1 is fixedly connected to a terminal, after the silver plating layer 2 is abraded, the stop ring 5 can be taken out of the stop groove 331 firstly, and then the positioning part 33 is pushed towards one side close to the conductive part 31, so that the connecting part 32 is moved out of the connecting groove 14, the positioning part 33 is moved out of the positioning hole 15, and the contact block 3 and the base body 1 can be detached, and the contact block 3 can be replaced independently. Compared with the mode of firstly disassembling and assembling the whole terminal, the operation mode has the advantages of simple and convenient operation and low replacement cost.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A silver contact comprising a substrate (1) and a silver coating (2), characterized in that: the contact block (3) is detachably arranged on the base body (1), the contact block (3) comprises a conductive part (31), a connecting part (32) and a positioning part (33) which are fixedly connected in sequence, the diameter of the conductive part (31) is larger than that of the connecting part (32), and the silver plating layer (2) is arranged on one side, far away from the connecting part (32), of the conductive part (31); the base body (1) is provided with a connecting groove (14) for embedding the connecting part (32), and the bottom wall of the connecting groove (14) is provided with a positioning hole (15) for the positioning part (33) to penetrate out.

2. The silver contact of claim 1, wherein: an anti-drop ring (4) capable of generating elastic deformation is fixedly arranged on the groove wall of the connecting groove (14).

3. The silver contact of claim 2, wherein: a plurality of fastening gear rings (41) are integrally formed on the inner wall of the anti-falling ring (4), and fastening ring grooves (321) for the fastening gear rings (41) to deform and extend into are formed in the circumferential side wall of the connecting part (32).

4. The silver contact of claim 3, wherein: the longitudinal section of the fastening gear ring (41) is triangular, and one end of the fastening gear ring, which is close to the central axis of the anti-falling ring (4), is a tip.

5. The silver contact of claim 1, wherein: the outer side of the positioning part (33) is detachably provided with a stop ring (5), and the stop ring (5) abuts against one side, far away from the conductive part (31), of the base body (1).

6. The silver contact of claim 5, wherein: the stop ring (5) is a rubber ring, a stop groove (331) for the stop ring (5) to be embedded into is formed in the circumferential side wall of the positioning portion (33), and the depth of the stop groove (331) is smaller than the difference between the inner diameter and the outer diameter of the stop ring (5).

7. The silver contact of claim 6, wherein: the stop grooves (331) are provided in a plurality and are distributed along the axial direction of the positioning portion (33).

8. The silver contact of claim 1, wherein: the contact block (3) is an iron block, and the base body (1) is a copper block.

9. The silver contact of claim 1, wherein: base member (1) includes integrated into one piece's butt portion (11) and installation department (12), be formed with between installation department (12) and the butt portion (11) ladder face (13).