Chip contact

Abstract

The utility model relates to the technical field of connectors, in particular to a sheet-type contact element, which solves the problems of small spring size, small contact area and weak current-carrying capability of the contact element in the prior art, and comprises a contact part, the contact part comprises a connecting part, the front end of the connecting part is integrally connected with a spring part, and the rear end of the connecting part is integrally connected with a wiring part; the elastic piece part comprises two elastic tooth sets which are oppositely arranged, each elastic tooth set comprises at least one elastic tooth, and the maximum sum of the widths of the elastic teeth in the single elastic tooth set can be equal to the width of the connecting part. The beneficial effects of the utility model are that under the condition that the overall size of the sheet-type contact element is not increased, the width of the elastic sheet part is increased to the greatest extent, so that the contact area is increased, the contact resistance is reduced, and the current-carrying capability of the sheet-type contact element is improved; the elastic claw is manufactured in a tearing mode, so that the root of the elastic claw has the maximum width, the resistance is reduced, and the current-carrying capacity is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a sheet-type contact piece. Background Art

[0002] With the rapid development of new energy electric vehicles, the demand and application of conductive parts are increasing. At present, a large number of electrical products on the market use chip contacts as conductive parts, and the wires are welded to the chip contacts to play the role of conduction. Conductive parts play the role of conducting current and signal transmission, which is inseparable from the application of terminals. The scope of use of chip contacts is increasing, and the types are also increasing.

[0003] As customers have higher and higher requirements for the functionality, safety, comfort, and entertainment of automobiles, higher requirements are placed on the chip contacts on the wires. The terminal current carrying capacity requirements are getting higher and higher, and at the same time, they must have high reliability and high stability. However, the current carrying capacity of existing chip contacts on the market is generally low, and the terminal springs are easy to yield, which makes it difficult to meet the connector terminal's need for a larger current carrying capacity and stable plug-in performance.

[0004] Patent number CN213184876U discloses a transfer structure and a curved socket connector using the transfer structure. The transfer structure includes a sheath and a contact body positioned and assembled in the sheath. The contact body has two sockets for connecting with the contact piece to be transferred. The sockets at the front and rear ends of the contact body are composed of two oppositely arranged spring cantilever arms. The contact springs of the spring cantilever arms are bent inward to form a contact portion for contacting with the plugged contact piece and providing contact pressure. The front end of the spring cantilever arm is provided with a connection structure for guiding and cooperating with the guide structures provided on the upper and lower sides of the two ends of the sheath. The springs of the transfer structure are small in size and small in contact area, which affects the current carrying capacity of the contact piece. Utility Model Content

[0005] The utility model provides a sheet-type contact piece, which solves the problems of small spring piece size, small contact area and weak current carrying capacity of the contact piece in the prior art.

[0006] The technical solution of the utility model is achieved in this way:

[0007] A chip contact member includes a contact component, the contact component includes a connecting portion, a spring piece portion is integrally connected to the front end of the connecting portion, and a wiring portion is integrally connected to the rear end of the connecting portion; the spring piece portion includes two oppositely arranged spring tooth groups, each spring tooth group includes at least one spring tooth, and the sum of the widths of the spring teeth in a single spring tooth group can be maximally equal to the width of the connecting portion. Without increasing the overall size of the chip contact member, the width of the spring teeth is maximally increased, thereby increasing the contact area between the spring teeth and the mating plug-in member, reducing the contact resistance, and enabling the chip contact member to have a higher current-carrying capacity.

[0008] The spring tooth includes a spring tooth head, and a contact point is provided on the spring tooth head. The contact points of the spring tooth heads in a single spring tooth group are arranged flush. This ensures consistent contact between each spring tooth and the mating plug-in member, and improves the mating stability of the chip contact member.

[0009] The spring tooth further includes a spring tooth root, the spring tooth root is integrally connected to the spring tooth head, the spring tooth root is integrally connected to the connecting portion, and the spring tooth roots of two adjacent spring teeth in a single spring tooth group are arranged in a staggered manner. When manufacturing the spring teeth, a tearing method is adopted, so that two adjacent spring teeth are arranged in a staggered manner, thereby making each spring tooth relatively independent and enabling the spring tooth root to have the maximum width, reducing the resistance and improving the current-carrying capacity.

[0010] The chip contact member further includes a sheath component, the sheath component is sleeved on the contact component, and the contact component is snap-connected to the sheath component. The sheath component plays a protective role for the contact component to prevent damage to the contact component caused by bumping.

[0011] The sheath component is of a rectangular tube structure, the connecting portion and the spring piece portion are both located inside the rectangular tube structure, and the wiring portion extends out of the tail end of the rectangular tube structure. The rectangular tube structure is formed by bending a sheet, and a dovetail groove is provided at the connecting edge after the sheet is bent to ensure the stability of the rectangular tube structure.

[0012] A limiting head is integrally connected to the front end of the spring tooth head, and first stop positions are respectively provided on the upper and lower sides of the head end of the rectangular tube structure, and the limiting head cooperates with the first stop positions. After the contact component is installed in the sheath component, the first stop positions play a limiting role to ensure the accurate installation position of the contact component in the sheath component.

[0013] The first stop position is of a C-shaped structure, and the inner width of the C-shaped structure is greater than the thickness of the limiting head. The C-shaped structure wraps the limiting head. At this time, the first stop position has the functions of preventing oblique insertion and offset insertion, ensuring the accurate insertion position of the mating plug-in member during mating; at the same time, the limiting head can move inside the C-shaped structure to ensure that the spring piece portion can apply a positive pressure to the mating plug-in member and ensure stable contact between the spring piece portion and the mating plug-in member.

[0014] On the upper and lower sides of the tail end of the connecting part, there are limiting slot holes. The tail end of the rectangular tube structure is provided with a second stop, and the limiting slot holes are in snap-fit connection with the second stop. After the contact component is inserted into the sheath component, the bending plate forms the second stop, and the second stop limits the position of the contact component in the sheath component to ensure the stable installation of the contact component.

[0015] On the top surface and the bottom surface of the rectangular tube structure, elastic buckles are respectively provided. The elastic buckles are in snap-fit connection with the mounting panel to ensure the stable installation of the contact piece on the mounting panel.

[0016] Strip-shaped holes are provided at the edge positions of the rectangular tube structure. The strip-shaped holes are beneficial for the plate to be bent into a rectangular tube structure. At the same time, they can also reduce the excessive springback of stress after bending, making the rectangular tube structure more reliable.

[0017] The beneficial effects produced by the present utility model are as follows: Without increasing the overall size of the chip-type contact piece, the width of the elastic piece part is increased to the greatest extent, thereby increasing the contact area, reducing the contact resistance, and improving the current-carrying capacity of the chip-type contact piece; When manufacturing the elastic teeth, the tearing method is adopted, so that the root of the elastic teeth has the maximum width, reducing the resistance and improving the current-carrying capacity.

[0018] The rectangular tube structure of the sheath component is made by bending a plate, and a dovetail groove is provided at the connecting edge after the plate is bent to ensure the stability of the rectangular tube structure; The strip-shaped holes provided at the edges of the rectangular tube structure are beneficial for the plate to be bent into shape, and at the same time, they can also reduce the excessive springback of stress after bending, making the rectangular tube structure more reliable. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of a chip-type contact piece of the present utility model;

[0021] Figure 2 It is an exploded view of the chip-type contact piece;

[0022] Figure 3 It is a schematic structural diagram of the contact component;

[0023] Figure 4 It is a schematic structural diagram of the sheath component Figure 1 ;

[0024] Figure 5 It is a schematic structural diagram of the sheath componentFigure 2 ;

[0025] Figure 6 It is a schematic diagram of the installation of the chip contact;

[0026] Figure 7 It is a schematic diagram of the misaligned arrangement of the elastic teeth.

[0027] In the figure: 1. Contact component, 2. Sheath component, 3. Installation panel, 11. Wiring part, 12. Connection part, 13. Elastic sheet part, 21. Rectangular tube structure, 22. Elastic buckle, 23. First stop position, 24. Second stop position, 25. Strip-shaped hole, 31. Panel slot hole, 121. Limit slot hole, 131. Root of the elastic tooth, 132. Head of the elastic tooth, 133. Limit head. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Embodiment 1, as Figure 1 , Figure 2 shown, a chip contact includes a contact component 1, the contact component 1 includes a connection part 12, the front end of the connection part 12 is integrally connected with an elastic sheet part 13, and the rear end of the connection part 12 is integrally connected with a wiring part 11; the elastic sheet part 13 includes two relatively arranged elastic tooth groups, each elastic tooth group includes at least one elastic tooth, and the sum of the widths of the elastic teeth in a single elastic tooth group can be at most equal to the width of the connection part 12. The wiring part 11 is a plate-like structure, and the wiring part 11 is connected to a wire, a copper bar, an aluminum bar or other conductive components by welding. The connection part 12 connects the wiring part 11 and the elastic sheet part 13, and the connection part 12 plays a role of supporting and connecting, so that the contact component 1 forms an integral structure, and the connection part 12 is formed by bending a plate into a rectangular ring structure, and is connected through a dovetail groove at the connecting edge to ensure the structural stability of the connection part 12.

[0030] In addition, without increasing the overall size of the chip contact, the width of the elastic sheet part 13 is increased to the greatest extent, thereby increasing the contact area between the elastic sheet part 13 and the mating plug-in, reducing the contact resistance, and improving the current-carrying capacity of the chip contact.

[0031] Furthermore, the elastic tooth includes an elastic tooth head 132, and a contact point is provided on the elastic tooth head 132. The contact points of the elastic tooth heads 132 in a single elastic tooth group are arranged flush. As Figure 7As shown, the contact points on the heads 132 of each spring tooth are located in the same plane. After the plug-in is completed, the plug-in part contacts the contact points on the heads 132 of each spring tooth at the same time, ensuring consistent contact between each spring tooth and the plug-in part and improving the plug-in stability of the chip contact part.

[0032] Furthermore, as Figure 3 shown, the spring tooth further includes a spring tooth root 131. The spring tooth root 131 is integrally connected to the spring tooth head 132, and the spring tooth root 131 is integrally connected to the connecting part 12. The spring tooth roots 131 of two adjacent spring teeth in a single spring tooth group are arranged in a staggered manner. In this embodiment, each spring tooth group includes three spring teeth. When manufacturing the spring teeth, a gap is formed by cutting between the heads 132 of two adjacent spring teeth first, and then the spring tooth root 131 is made by tearing, forming a staggered arrangement of the spring tooth roots 131, so that each spring tooth is relatively independent, and the spring tooth root 131 has the maximum width, reducing the resistance and improving the current-carrying capacity. And it can avoid burrs at the edges of the spring tooth head 132, ensuring the contact stability between the spring tooth head 131 and the plug-in part.

[0033] Specifically, after the spring teeth are made by tearing, the spring teeth in a single spring tooth group are divided into inner-layer spring teeth and outer-layer spring teeth. The heads 132 of both the inner-layer spring teeth and the outer-layer spring teeth are arc-shaped structures. When plugging in, the plug-in part first contacts the head 132 of the outer-layer spring tooth, and then contacts the head 132 of the inner-layer spring tooth. That is, at the beginning of the plug-in, the number of contacts between the plug-in part and the spring teeth is small, which can effectively reduce the insertion resistance during plugging. Long strip holes are provided on the head 132 of the spring tooth, so that the number of contact points between the head 132 of the spring tooth and the plug-in part doubles during plugging, reducing the contact resistance and the bulk resistance at the same time, and having a higher current-carrying capacity under the same size.

[0034] Furthermore, as Figure 4 、 Figure 5 shown, the chip contact part further includes a sheath part 2. The sheath part 2 is sleeved on the contact part 1, and the contact part 1 is snap-connected to the sheath part 2. The sheath part 2 plays a protective role for the contact part 1, avoiding damage to the contact part 1 caused by bumping.

[0035] Furthermore, the sheath part 2 is a rectangular tube structure 21. The connecting part 12 and the spring piece part 13 are both located inside the rectangular tube structure 21, and the wiring part 11 extends out of the tail end of the rectangular tube structure 21. The rectangular tube structure 21 is made by bending a plate, and a dovetail groove is provided at the connecting edge after the plate is bent to ensure the stability of the rectangular tube structure. The wiring part 11 is arranged outside the rectangular tube structure 21 to facilitate the connection of the wire harness and the contact part 1.

[0036] Furthermore, a limiting head 133 is integrally connected to the front end of the elastic tooth head 132. First stoppers 23 are respectively provided on the upper and lower sides of the head end of the rectangular tube structure 21, and the limiting head 133 cooperates with the first stoppers 23. After the contact component 1 is inserted into the sheath component 2, the first stoppers 23 play a limiting role to ensure the accurate installation position of the contact component 1 within the sheath component 2.

[0037] Furthermore, the first stopper 23 is of a C-shaped structure, and the inner width of the C-shaped structure is greater than the thickness of the limiting head 133. The C-shaped structure wraps the limiting head 133. At this time, the first stopper 23 has the functions of preventing oblique insertion and offset insertion, ensuring the accurate insertion position of the plug-in components during mating; at the same time, the limiting head 133 can move inside the C-shaped structure, ensuring that the elastic piece portion can apply a normal pressure to the plug-in component and ensuring the stable contact between the elastic piece head 132 and the plug-in component.

[0038] Furthermore, limiting slot holes 121 are provided on the upper and lower sides of the tail end of the connecting portion 12, and a second stopper 24 is provided at the tail end of the rectangular tube structure 21. The limiting slot holes 121 are in snap-fit connection with the second stopper 24. After the contact component 1 is inserted into the sheath component 2, the bent sheet forms the second stopper 24, and the second stopper 24 limits the position of the contact component 1 within the sheath component 2 to ensure the stable installation of the contact component 1.

[0039] Furthermore, elastic clasps 22 are respectively provided on the top and bottom surfaces of the rectangular tube structure 21. As Figure 6 shown, after the chip-type contact is inserted into the mounting panel 3, the elastic clasps 22 are snap-connected to the panel slot holes 31 on the mounting panel 3 to ensure the stable installation of the contact on the mounting panel. When it is necessary to remove the chip-type contact, only by applying a force into the mounting panel slot holes 31, causing the elastic clasps 22 to deform inward, and applying a pulling force in the axial direction of the chip-type contact, the chip-type contact can be taken out.

[0040] Furthermore, strip-shaped holes 25 are provided at the edge positions of the rectangular tube structure 21. The strip-shaped holes 25 are conducive to the sheet metal bending into the rectangular tube structure 21, and at the same time, they can also reduce the excessive stress rebound after bending, making the rectangular tube structure more reliable.

[0041] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A chip contact, comprising a contact member (1), characterized in that, The contact component (1) includes a connecting portion (12). At the front end of the connecting portion (12), an elastic piece portion (13) is integrally connected, and at the rear end of the connecting portion (12), a wiring portion (11) is integrally connected; the elastic piece portion (13) includes two oppositely arranged elastic tooth groups, each elastic tooth group includes at least one elastic tooth, and the sum of the widths of the elastic teeth in a single elastic tooth group can be at most equal to the width of the connecting portion (12).

2. The chip contact according to claim 1, characterized in that, The elastic tooth includes an elastic tooth head (132), and a contact point is provided on the elastic tooth head (132). The contact points of the elastic tooth heads (132) in a single elastic tooth group are arranged flush.

3. The chip contact according to claim 2, wherein, The elastic tooth further includes an elastic tooth root (131). The elastic tooth root (131) is integrally connected to the elastic tooth head (132), and the elastic tooth root (131) is integrally connected to the connecting portion (12). The elastic tooth roots (131) of two adjacent elastic teeth in a single elastic tooth group are arranged in a staggered manner.

4. The chip contact according to any one of claims 1 to 3, characterized in that, It further includes a sheath component (2). The sheath component (2) is sleeved on the contact component (1), and the contact component (1) is connected to the sheath component (2) in a snap-fit manner.

5. The chip contact according to claim 4, wherein, The sheath component (2) has a rectangular tube structure (21). The connecting portion (12) and the elastic piece portion (13) are both located inside the rectangular tube structure (21), and the wiring portion (11) extends out of the tail end of the rectangular tube structure (21).

6. The chip contact according to claim 5, characterized in that, A limiting head (133) is integrally connected to the front end of the elastic tooth head (132). First stop positions (23) are respectively provided on the upper and lower sides of the head end of the rectangular tube structure (21), and the limiting head (133) cooperates with the first stop positions (23).

7. The chip contact according to claim 6, characterized in that, The first stop position (23) has a C-shaped structure, and the inner width of the C-shaped structure is greater than the thickness of the limiting head (133).

8. The chip contact according to any one of claims 5 to 7, characterized in that, Limiting slot holes (121) are provided on the upper and lower sides of the tail end of the connecting portion (12). A second stop position (24) is provided at the tail end of the rectangular tube structure (21), and the limiting slot holes (121) are in snap-fit connection with the second stop position (24).

9. The chip contact according to claim 8, wherein Elastic buckles (22) are respectively provided on the top surface and the bottom surface of the rectangular tube structure (21).

10. The chip contact according to any one of claims 5 to 7 and 9, characterized in that Strip-shaped holes (25) are provided at the edge positions of the rectangular tube structure (21).

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