Elastic grounding contact element for connector

Abstract

The utility model discloses an elastic grounding contact element for a connector, which comprises a contact element body and a base, and is characterized in that the contact element body comprises a mounting head part and an elastic contact tail part which are integrally arranged up and down; the contact body is inserted into the base from bottom to top and is clamped and fixed through the mounting head part of the contact body and the mounting inner cavity of the base, and the elastic contact tail part comprises a grounding end and a signal transmission end which are arranged side by side and have the same shape and structure; the grounding end and the signal transmission end are integrally wavy and comprise arc structures and inclined plane structures which are sequentially arranged in a staggered manner, so that the gravity center of the elastic contact tail part is kept on a straight line where elastic extrusion force is located when the elastic contact tail part is elastically extruded and deformed; the tail parts of the grounding end and the signal transmission end are in the shape of a hook which tilts upwards and are connected with the lowermost arc structure. The utility model is suitable for a grounding type connector, not only is more convenient to assemble and use, but also avoids slippage with the PAD contact part.

Description

Technical Field

[0001] The utility model belongs to the technical field of contacts, and in particular relates to an elastic grounding contact for a connector. Background Art

[0002] In the past, similar contacts and PCBs were mostly connected by welding or crimping. Such structures are very inconvenient to assemble. Connectors that require welding require specialized welding equipment, while connectors that require crimping require large equipment for crimping operations. This has caused great inconvenience in processing and production given the high density of components on today's PCBs. At the same time, when similar spring-type contacts come into contact with the PCB PAD, due to factors such as the spring shape and friction, the spring and PAD often slide forward at the contact point. Therefore, a certain amount of deformation space needs to be reserved when designing the connector, resulting in the overall connector size being larger. Utility Model Content

[0003] The present invention aims to solve the problems in the prior art and proposes the following technical solutions:

[0004] A resilient grounding contact for a connector, comprising a contact body and a base, the contact body comprising an integral mounting head and a resilient contact tail disposed vertically above and below, the contact body being inserted into the base from bottom to top and being secured by the mounting head of the contact body and the mounting inner cavity of the base, the resilient contact tail comprising a grounding terminal and a signal transmission terminal disposed side by side and having the same shape and structure;

[0005] The grounding end and the signal transmission end are wavy as a whole, including arc structures and inclined structures arranged in sequence, so that the center of gravity of the elastic contact tail remains on the straight line where the elastic extrusion force is located when the elastic extrusion tail is elastically extruded and deformed; the tails of the grounding end and the signal transmission end are in the shape of an upward-curved hook and are connected to the arc structure at the bottom.

[0006] As a preferred embodiment of the above technical solution, the arc structure includes a second arc structure, a third arc structure and a fourth arc structure.

[0007] As a preferred embodiment of the above technical solution, the inclined surface structure includes a first inclined surface and a second inclined surface.

[0008] As a preferred embodiment of the above technical solution, the tail of the grounding end and the signal transmission end includes an arc-shaped connecting portion and an upper hook portion that are connected in one piece, and the upper hook portion is connected to the fourth arc structure.

[0009] As a preferred embodiment of the above technical solution, the mounting head includes a cantilever structure, which extends upward to form a contact head. The contact head extends upward to have a first arc structure. The contact head is used to contact the mating end contact piece, and at the same time has a structural chamfer on the edge of the extended portion.

[0010] As a preferred embodiment of the above technical solution, a first boss structure is extended downward from the cantilever structure, and a connection portion between the cantilever structure and the first boss structure forms a planar platform.

[0011] As a preferred embodiment of the above technical solution, a second boss structure is downwardly extended from the first boss structure, a guide portion is provided at the upper end of the second boss structure, and a convex hull structure is formed on the side surface of the second boss structure.

[0012] As a preferred embodiment of the above technical solution, the second boss structure extends downward and is sequentially provided with a first boss, a second boss, and a third boss. The widths of the first boss, the second boss, and the third boss are the same and greater than the widths of the first boss structure and the second boss structure.

[0013] The beneficial effects of the utility model are:

[0014] This practical contact is suitable for grounding connectors. The contact body is installed in the base through the mounting head, and then the contact signal transmission is carried out through the elastic contact tail of the contact body. The assembly and use are more convenient, and the elastic contact tail of the contact body includes a grounding end and a signal transmission end which are arranged side by side and have the same shape and structure, thereby ensuring the signal transmission requirements and the grounding requirements at the same time. Moreover, when the elastic contact tail is elastically extruded and deformed, its center of gravity remains on the straight line where the elastic extrusion force is located, so that the elastic contact tail can be vertically deformed to contact the PAD of the PCB board, thereby avoiding slippage of the contact part and ensuring the reliability of the contact. At the same time, the contact position between the contact body 1 and the PAD is set to an upwardly tilted hook shape, which can maintain the cross-sectional shape of the contact position, thereby ensuring the consistency of the impedance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure shows a schematic diagram of the three-dimensional structure of an elastic grounding contact for a connector in an embodiment;

[0016] Figure 2 The figure shows a partial enlarged view of a connector with an elastic ground contact and a PAD in an embodiment;

[0017] Figure 3 The figure shows a side view of a connector with an elastic ground contact and a PAD in a semi-contact state in an embodiment;

[0018] Figure 4 Shown is an assembly diagram of an elastic grounding contact and a base for a connector in an embodiment.

[0019] In the figure: 1. Contact body; 11. Contact head; 111. First arc structure; 112. Structural chamfer; 12. Cantilever structure; 13. First boss structure; 131. Plane platform; 14. Second boss structure; 141. Guide portion; 142. Convex structure; 15. First protrusion; 16. Second protrusion; 17. Third protrusion; 18. Second arc structure; 19. First inclined plane; 120. Third arc structure; 121. Second inclined plane; 122. Fourth arc structure; 123. Arc-shaped connecting portion; 124. Upper hook portion; 2. Base. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0021] Example

[0022] like Figure 1-Figure 4 As shown, a resilient grounding contact for a connector includes a contact body 1 and a base 2. The contact body 1 includes an integral mounting head and a resilient contact tail disposed vertically. The contact body 1 is inserted into the base 2 from bottom to top and is fixed by the mounting head of the contact body 1 and the mounting inner cavity of the base 2. The resilient contact tail includes a grounding terminal and a signal transmission terminal disposed side by side and having the same shape and structure.

[0023] The grounding end and the signal transmission end are wavy as a whole, including arc structures and inclined structures arranged in sequence, so that the center of gravity of the elastic contact tail remains on the straight line where the elastic extrusion force is located when the elastic extrusion tail is elastically extruded and deformed; the tail of the grounding end and the signal transmission end is in the shape of an upward-curved hook and is connected to the arc structure at the bottom.

[0024] This practical contact is suitable for grounding connectors. The contact body 1 is installed in the base 2 through the engagement of the mounting head, and then contact-type signal transmission is performed through the elastic contact tail of the contact body 1, which makes assembly and use more convenient. The elastic contact tail of the contact body 1 includes a grounding terminal and a signal transmission terminal that are arranged side by side and have the same shape and structure, thereby ensuring both signal transmission and grounding requirements. Moreover, when the elastic contact tail is elastically extruded and deformed, its center of gravity remains on the straight line where the elastic extrusion force is located, so that the elastic contact tail can be vertically deformed to contact the PAD of the PCB board, thereby avoiding slippage of the contact part and ensuring the reliability of the contact. At the same time, the contact position between the contact body 1 and the PAD is set to an upwardly tilted hook shape, which can maintain the cross-sectional shape of the contact position, thereby ensuring the consistency of the impedance.

[0025] The arc structure includes a second arc structure 18, a third arc structure 120, and a fourth arc structure 122. The inclined plane structure includes a first inclined plane 19 and a second inclined plane 121. In practical applications, the arc structures and inclined plane structures arranged alternately can be lengthened or shortened according to actual needs.

[0026] The tail of the grounding terminal and signal transmission terminal includes an integrally connected arc-shaped connecting portion 123 and an upper hook portion 124, which is connected to the fourth arc structure 122. The arc-shaped connecting portion 123 and the upper hook portion 124 together form an upward-curving hook shape, so that the outer arc bottom of the hook contacts the PAD. This not only facilitates the adjustment of the center of gravity with the elastic contact tail, but also prevents damage to the contact portion when the PAD is offset.

[0027] The mounting head includes a cantilever structure 12, which extends upward to contact the head 11. The contact head 11 extends upward to have a first arc structure 111, which is used to contact the mating end contact piece. At the same time, a structural chamfer 112 is provided on the edge of the extended portion.

[0028] The cantilever structure 12 extends downwardly to form a first boss structure 13, and the connection between the cantilever structure 12 and the first boss structure 13 forms a flat platform 131. The first boss structure 13 and the flat platform 131 are provided to limit the installation of the contact member and the base to prevent the contact member from moving upward.

[0029] A second boss structure 14 extends downward from the first boss structure 13. A guide portion 141 is provided at the upper end of the second boss structure 14, and a convex structure 142 is formed on the side of the second boss structure 14. The guide portion 141 serves as an auxiliary guide for installation, while the convex structure 142 cooperates with the corresponding groove of the base 2 to prevent shaking and provide left and right positioning.

[0030] The second boss structure 14 extends downward and is sequentially provided with a first protrusion 15, a second protrusion 16, and a third protrusion 17. The first protrusion 15, the second protrusion 16, and the third protrusion 17 have the same width and are greater than the widths of the first boss structure 13 and the second boss structure 14. The first protrusion 15, the second protrusion 16, and the third protrusion 17 are used to form an interference fit with the base 2, increasing the tightness of the installation between the contact body 1 and the base 2 and preventing them from falling off.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. A resilient grounding contact for a connector, comprising a contact body (1) and a base (2), characterized in that: The contact body (1) comprises an integral mounting head and an elastic contact tail, which are arranged in an upper and lower manner. The contact body (1) is inserted into the base (2) from the bottom up and is fixed by the mounting head of the contact body (1) and the mounting inner cavity of the base (2). The elastic contact tail comprises a grounding terminal and a signal transmission terminal which are arranged side by side and have the same shape and structure. The grounding end and the signal transmission end are wavy as a whole, including arc structures and inclined structures arranged in sequence, so that the center of gravity of the elastic contact tail remains on the straight line where the elastic extrusion force is located when the elastic extrusion tail is elastically extruded and deformed; the tails of the grounding end and the signal transmission end are in the shape of an upward-curved hook and are connected to the arc structure at the bottom.

2. The elastic grounding contact for a connector according to claim 1, characterized in that: The arc structure includes a second arc structure (18), a third arc structure (120) and a fourth arc structure (122).

3. The elastic grounding contact for a connector according to claim 2, characterized in that: The inclined surface structure includes a first inclined surface (19) and a second inclined surface (121).

4. The elastic grounding contact for a connector according to claim 3, characterized in that: The tail of the grounding end and the signal transmission end comprises an arc-shaped connecting portion (123) and an upper hook portion (124) connected in an integral manner, and the upper hook portion (124) is connected to the fourth arc structure (122).

5. The elastic grounding contact for a connector according to claim 1, characterized in that: The mounting head comprises a cantilever structure (12), the cantilever structure (12) extends upward to contact the head (11), the contact head (11) extends upward to have a first arc structure (111), the contact head (11) is used to contact the butt-end contact piece, and has a structural chamfer (112) at the edge of the extended portion.

6. The elastic grounding contact for a connector according to claim 5, characterized in that: The cantilever structure (12) is provided with a first boss structure (13) extending downward, and a connecting portion of the cantilever structure (12) and the first boss structure (13) forms a plane platform (131).

7. The elastic grounding contact for a connector according to claim 6, characterized in that: A second boss structure (14) extends downward from the first boss structure (13); a guide portion (141) is provided at the upper end of the second boss structure (14); and a convex hull structure (142) is formed on the side surface of the second boss structure (14).

8. The elastic grounding contact for a connector according to claim 7, characterized in that: The second boss structure (14) extends downward and is provided with a first boss (15), a second boss (16), and a third boss (17) in sequence. The widths of the first boss (15), the second boss (16), and the third boss (17) are the same and greater than the widths of the first boss structure (13) and the second boss structure (14).

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