Elastic signal contact element for high-speed connector

Abstract

The utility model discloses an elastic signal contact element for a high-speed 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 element body is inserted into the base from bottom to top and is clamped and fixed with the mounting inner cavity of the base through the mounting head part of the contact element body; the whole elastic contact tail is in a wave shape and comprises an arc structure and an inclined face structure which are sequentially arranged in a staggered mode, so that the gravity center of the elastic contact tail is kept on the straight line where elastic extrusion force is located when the elastic contact tail is elastically extruded and deformed, and the inclined face structure is widened. The elastic contact tail part and the contact part of the PAD are in the shape of a hook which tilts upwards and are connected with the lowermost inclined plane structure. The utility model not only is more convenient to assemble and use, but also has high contact reliability, and meets the requirement of high-speed transmission of the connector.

Description

Technical Field

[0001] The utility model belongs to the technical field of contacts, and in particular relates to a flexible signal contact for a high-speed 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 signal contact for a high-speed connector includes a contact body and a base. The contact body includes an integral mounting head and a resilient contact tail disposed vertically. The contact body is inserted into the base from bottom to top and is fixed by engaging the mounting head of the contact body with the mounting inner cavity of the base.

[0005] The elastic contact tail is 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 contact tail is elastically extruded and deformed. The inclined structure is widened, and the contact part between the elastic contact tail and the PAD is in the shape of an upward-curved hook and is connected to the lowest inclined structure.

[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, a second inclined surface and a third inclined surface.

[0008] As a preferred embodiment of the above technical solution, the contact portion between the elastic contact tail and the PAD 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 third inclined surface.

[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] The practical contact body of the present invention is installed in the base through the engagement of the mounting head, and then the contact-type signal transmission is carried out through the elastic contact tail of the contact body, which makes assembly and use more convenient; and the center of gravity of the elastic contact tail remains on the straight line where the elastic extrusion force is located when the elastic contact tail is elastically extruded and deformed, so that the elastic contact tail can be vertically deformed to contact the PAD of the PCB board, avoiding slippage of the contact part and ensuring the reliability of the contact; at the same time, the contact position between the contact body 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; and the widening treatment of the inclined surface structure can further improve the signal transmission performance, thereby meeting the high-speed transmission requirements of the connector, and further realizing the good function of the transmission performance between signals. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 The figure shows a partial enlarged view of a high-speed connector with a resilient signal contact and a PAD in contact with each other in an embodiment;

[0017] Figure 3 The figure shows a side view of a high-speed connector with a spring signal contact and a PAD in half contact in an embodiment;

[0018] Figure 4 Shown is an assembly diagram of a spring signal contact and a base for a high-speed connector according to 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. Bump 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. Third inclined plane; 124. Arc-shaped connecting portion; 125. 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 Figures 1-4 As shown, a resilient signal contact for a high-speed 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 above and below. 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.

[0023] The elastic contact tail is 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 contact tail is elastically extruded and deformed. The inclined structure is widened, and the contact part between the elastic contact tail and the PAD is in the shape of an upward-curved hook and is connected to the lowest inclined structure.

[0024] The practical contact body 1 of the present invention is installed in the base 2 through the engagement of the mounting head, and then the contact signal transmission is carried out through the elastic contact tail of the contact body 1, which makes assembly and use more convenient; and the center of gravity of the elastic contact tail remains on the straight line where the elastic extrusion force is located when the elastic contact tail is elastically extruded and deformed, so that the elastic contact tail can be vertically deformed to contact the PAD of the PCB board, 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; and the widening treatment of the inclined surface structure can further improve the signal transmission performance, thereby meeting the requirements of high-speed transmission of the connector, and further realizing the good function of transmission performance between signals.

[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, a second inclined plane 121, and a third inclined plane 123. In actual applications, the arc structures and inclined plane structures arranged alternately can be lengthened or shortened according to actual needs.

[0026] The contact area between the elastic contact tail and the PAD includes an integrally connected arcuate connecting portion 124 and an upper hook portion 125, with the upper hook portion 125 connected to the third inclined surface 123. The arcuate connecting portion 124 and the upper hook portion 125 together form an upwardly tilted hook shape, allowing the outer arc bottom of the hook to contact the PAD. This not only facilitates center of gravity adjustment with the elastic contact tail, but also prevents damage to the contact area when the PAD and the device are offset and slipped.

[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 flexible signal contact for a high-speed 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 is 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 contact tail is elastically extruded and deformed. The inclined structure is widened, and the contact part between the elastic contact tail and the PAD is in the shape of an upward-curved hook and is connected to the lowest inclined structure.

2. The elastic signal contact for a high-speed 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 signal contact for a high-speed connector according to claim 2, characterized in that: The inclined surface structure includes a first inclined surface (19), a second inclined surface (121) and a third inclined surface (123).

4. The elastic signal contact for a high-speed connector according to claim 3, characterized in that: The contact portion between the elastic contact tail and the PAD comprises an arc-shaped connecting portion (124) and an upper hook portion (125) connected in an integral manner, and the upper hook portion (125) is connected to the third inclined surface (123).

5. The elastic signal contact for a high-speed 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 signal contact for a high-speed 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 signal contact for a high-speed 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 signal contact for a high-speed 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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