Enhanced socket connector

Abstract

The utility model discloses an enhanced socket connector, which comprises a plastic body and metal pins, a pin accommodating hole is formed on the inner side of the plastic body, the pins are inserted into the pin accommodating hole, one end of each pin is provided with a plugging conduction section which can be electrically conducted with a plug connector, and the other end of each pin is provided with a plug-in hole. A limiting clamping groove is formed in the circumferential outer side wall of a connecting section formed at the other end of the contact pin, and a plurality of cantilever structures capable of elastically swinging in the radial direction of the contact pin containing hole are arranged on the inner side wall of the contact pin containing hole of the plastic body. A clamping jaw at the free end of the cantilever structure can be connected with a limiting clamping groove in the outer side wall of the circumference of the contact pin in a buckled mode so that the contact pin can be axially stopped and positioned in the contact pin containing hole, and the limiting plug ring can be fixedly inserted into an annular gap between the cantilever structure and the inner side wall of the contact pin containing hole. And the inner side wall of the limiting plug ring tightly abuts against the side wall of the cantilever structure opposite to the direction of the contact pin to prevent the cantilever structure from elastically swinging towards the direction far away from the contact pin. According to the utility model, the retention force of the contact pin in the plastic body is effectively improved.

Description

Technical Field

[0001] The utility model relates to a socket connector, in particular to an enhanced socket connector. Background Art

[0002] The socket connector is mainly composed of a plastic body and a pin. The pin is inserted into the pin accommodating hole of the plastic body and is used to connect with the plug inserted into the pin accommodating hole of the plastic body. At present, the connection structure between the pin and the plastic body is that a cantilever structure is arranged in the plastic body, and an inner concave slot structure is arranged on the outer side wall of the pin. After the pin is installed in the pin accommodating hole of the plastic body, the claw at the free end of the cantilever structure extends into the inner concave slot structure of the pin to realize the fixed positioning of the pin and the plastic body.

[0003] When an external force is applied to the pin, the cantilever structure tends to expand outward, and the pin retaining force is insufficient, causing the pin to separate from the plastic body. Utility Model Content

[0004] In order to overcome the above defects, the utility model provides an enhanced socket connector, which can improve the retention force of the pin in the plastic body, ensure that the pin will not be separated from the plastic body under the action of external force, and improve its use stability.

[0005] The utility model adopts a technical solution to solve its technical problems: an enhanced socket connector, comprising a plastic body and a metal pin, the inner side of the plastic body is formed with a pin accommodating hole, the pin is inserted into the pin accommodating hole, one end of the pin forms a plug-in conductive section that can be electrically conductive with the plug connector, the other end of the pin forms a connecting section, a limiting groove is provided on the circumferential outer wall of the connecting section of the pin, a plurality of cantilever structures that can elastically swing along the radial direction of the pin accommodating hole are provided on the inner side wall of the pin accommodating hole of the plastic body, the free end of the cantilever structure forms a claw, the claw can be snap-connected with the limiting groove on the circumferential outer wall of the pin to realize axial stopping and positioning of the pin in the pin accommodating hole, and a limiting plug ring is also provided, the limiting plug ring can be fixedly inserted in the annular gap between the cantilever structure and the inner side wall of the pin accommodating hole, the inner side wall of the limiting plug ring is tightly against the side wall of the cantilever structure facing away from the pin to prevent the cantilever structure from elastically swinging in the direction away from the pin.

[0006] As a further improvement of the present invention, a concave snap ring is provided on the circumferential outer wall of the limit plug ring, and a convex snap ring is provided on the inner wall of the pin accommodating hole. The convex snap ring can be inserted into the concave snap ring to achieve axial stopping and positioning of the limit plug ring in the pin accommodating hole.

[0007] As a further improvement of the present invention, a chamfered inclined guide surface is formed on the side wall of one end of the limit plug ring facing the root of the cantilever structure, and the inner convex snap ring on the inner side wall of the pin accommodating hole is an undercut structure with a chamfered surface or a rounded surface facing the free end of the cantilever structure. During the insertion of the limit plug ring from the opening at one end of the pin accommodating hole, its chamfered inclined guide surface first contacts the chamfered surface or the rounded surface of the inner convex snap ring to achieve guidance.

[0008] As a further improvement of the present invention, the pin accommodating hole is a stepped hole with an inner diameter at one end larger than the inner diameter at the other end, the root of the cantilever structure is located on the step surface formed between the two ends of the pin accommodating hole, the free end of the cantilever structure extends toward one end of the pin accommodating hole, the claw extends obliquely from the end of the cantilever structure toward the axial direction of the pin accommodating hole, the inner side wall of one end of the limit plug ring is an inclined surface matching the outer side wall shape of the claw, and the other end of the limit plug ring is tightly against the step surface formed between the two ends of the pin accommodating hole.

[0009] As a further improvement of the present invention, the connecting section of the pin is a step structure with an outer diameter at one end smaller than the outer diameter at the other end, the small diameter portion of the connecting section of the pin is inserted into the pin accommodating hole of the plastic body, and the large diameter portion of the connecting section of the pin is stopped on the outer end surface of the plastic body.

[0010] As a further improvement of the utility model, the outer diameter of the plug-in conductive section of the plug pin is smaller than the outer diameter of one end of the connecting end, and the edge of one end of the connecting section is formed with a chamfered structure or a rounded structure.

[0011] As a further improvement of the present invention, the side wall of the limiting slot on the circumferential outer wall of the pin connecting section facing one end of the pin is perpendicular to the circumferential outer side surface of the pin, and the side wall of the limiting slot facing the other end of the pin is a chamfered inclined surface structure, and the inner side surface of the end of the claw facing the direction of the pin can be flush with the bottom surface of the limiting slot, and the end surface of the end of the claw facing one end of the pin can be flush with the side wall of the limiting slot facing one end of the pin.

[0012] As a further improvement of the present invention, the inner side surface of each cantilever structure in the plug pin accommodating hole facing the plug pin can fit with the outer side surface of one end of the plug pin connecting section.

[0013] As a further improvement of the present invention, the connecting section of the plug pin is a two-step structure, and the middle part of the connecting section forms a stop-rotation limit section with a non-circular cross-section. The plug pin accommodating hole of the plastic body is provided with a non-circular hole section matching the stop-rotation limit section of the plug pin, and the cross-section of the stop-rotation limit section is a non-circular structure matching the cross-section of the middle part of the plug pin connecting section.

[0014] The beneficial effect of the utility model is as follows: the utility model adds a cylindrical plug piece between the inner side wall of the plastic body and the cantilever structure to fill the space for the cantilever to expand outward. When the pin is subjected to force, the cylindrical limit plug ring suppresses the outward expansion of the cantilever structure through the limit plug ring, so that the claw at the free end of the limit structure always maintains the plug-in positioning with the concave slot on the pin, thereby effectively improving the holding force of the pin in the plastic body, so that the pin will not separate from the plastic body even when subjected to circumferential pulling force, thereby improving the stability of the socket connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an exploded perspective diagram of the assembly principle of the new type of limit plug ring used in this paper;

[0016] Figure 2 This is a three-dimensional diagram of the utility model after the limit plug ring is installed;

[0017] Figure 3 The utility model is a three-dimensional view of the plastic body;

[0018] Figure 4 for Figure 3 Middle A-direction view;

[0019] Figure 5 for Figure 4 Middle BB section view;

[0020] Figure 6 It is a three-dimensional diagram of the pin of the utility model;

[0021] Figure 7 This is a three-dimensional diagram of the limit plug ring of the utility model;

[0022] Figure 8 This is a front view of the limit plug ring of the utility model;

[0023] Fig. 9 This is a diagram showing the deformation state of the cantilever structure caused by the pull-out force on the pin in the prior art;

[0024] Fig.10 It is a cross-sectional view of the structural principle of the utility model. DETAILED DESCRIPTION

[0025] Embodiment: An enhanced socket connector comprises a plastic body 1 and a metal pin 2, wherein a pin receiving hole 11 is formed on the inner side of the plastic body 1, and the pin 2 is inserted into the pin receiving hole 11, and a plug-in conductive section 21 which can be electrically conductive with a plug connector is formed at one end of the pin 2, and a connecting section 22 is formed at the other end of the pin 2, and a limit card groove 221 is provided on the circumferential outer wall of the connecting section 22 of the pin 2, and a plurality of limit card grooves 221 which can be elastically swung along the radial direction of the pin receiving hole 11 are provided on the inner side wall of the pin receiving hole 11 of the plastic body 1. A cantilever structure 12, wherein a claw 121 is formed at the free end of the cantilever structure 12, wherein the claw 121 can be snap-fitted with a limit groove 221 on the circumferential outer wall of the plug pin 2 to realize axial stop positioning of the plug pin 2 in the plug pin receiving hole 11, and a limit plug ring 3 is further provided, wherein the limit plug ring 3 can be fixedly inserted in an annular gap between the cantilever structure 12 and the inner wall of the plug pin receiving hole 11, and the inner wall of the limit plug ring 3 is tightly pressed against the side wall of the cantilever structure 12 facing away from the plug pin 2 to prevent the cantilever structure 12 from elastically swinging in a direction away from the plug pin 2

[0026] During assembly, first insert the pin 2 into the pin 2 receiving groove of the plastic body 1, and then elastically deform the cantilever structure 12 in the pin 2 receiving groove of the plastic body 1 to realize the outward expansion elastic deformation of the clamping claw 121 and avoid the outer wall of the pin 2 connecting section 22. When the pin 2 is assembled in place, the clamping claw 121 automatically snaps into the limiting clamping groove 221 on the outer wall of the pin 2 connecting section 22 under the elastic reset force of the cantilever structure 12, so as to realize the preliminary connection and positioning of the pin 2 and the plastic body 1, and then insert the limiting plug ring 3 into the pin receiving hole 1 of the plastic body 1. In the annular gap formed between the inner wall 1 and the outer side surface of the cantilever structure 12, since the outer side surface of the cantilever structure 12 is blocked by the limiting plug ring 3, the cantilever structure 12 loses the ability to swing outward elastically, so that the claw 121 at the free end of the cantilever structure 12 is always kept in the limiting groove 221 on the outer side wall of the connecting section 22 of the plug pin 2. Even if the plug pin 2 is subjected to a pulling force, the claw 121 cannot escape from the limiting groove 221 of the plug pin 2, which effectively increases the connection holding force between the plug pin 2 and the plastic body 1, and realizes the anti-drop effect of the plug pin 2 in the plastic body 1.

[0027] The outer circumferential wall of the stopper ring 3 is provided with an inner concave snap ring 31, and the inner wall of the pin receiving hole 11 is provided with an inner convex snap ring 13, and the inner convex snap ring 13 can be inserted into the inner concave snap ring 31 to realize the axial stop positioning of the stopper ring 3 in the pin receiving hole 11. After the stopper ring 3 is installed in the pin receiving hole 11 of the plastic body 1, the inner concave snap ring 31 on the outer side of the stopper ring 3 is just clamped with the inner convex snap ring 13 on the inner wall of the pin receiving hole 11, so that the stopper ring 3 will not fall out of the gap between the pin receiving hole 11 and the cantilever structure 12 even if it is subjected to force, further ensuring the retention force of the pin 2 in the plastic body 1 and improving the stability of the socket connector.

[0028] The chamfered inclined guide surface 32 is formed on the side wall of one end of the stopper ring 3 facing the root of the cantilever structure 12. The inner convex snap ring 13 on the inner side wall of the pin receiving hole 11 is an undercut structure with a chamfered surface or a rounded surface facing the free end of the cantilever structure 12. During the insertion of the stopper ring 3 from the opening of one end of the pin receiving hole 11, its chamfered inclined guide surface 32 first contacts the chamfered surface or the rounded surface of the inner convex snap ring 13 to achieve guidance. By gradually contacting the chamfered inclined guide surface 32 on the outer side of the stopper ring 3 with the inner convex snap ring 13 on the inner side wall of the pin receiving hole 11, the stopper ring 3 can be smoothly installed in the pin receiving hole 11 of the plastic body 1.

[0029] The pin receiving hole 11 is a stepped hole with an inner diameter at one end larger than that at the other end. The root of the cantilever structure 12 is located on the stepped surface formed between the two ends of the pin receiving hole 11. The free end of the cantilever structure 12 extends toward one end of the pin receiving hole 11. The claw 121 extends obliquely from the end of the cantilever structure 12 toward the axial direction of the pin receiving hole 11. The inner side wall of one end of the stopper ring 3 is an inclined surface matching the outer side wall shape of the claw 121. The other end of the stopper ring 3 is tightly against the stepped surface formed between the two ends of the pin receiving hole 11. This structure facilitates the cantilever structure 12 and the clamping thereon to be molded in the plastic body 1. In addition, the root of the cantilever structure 12 can also be located on the inner side wall of the pin receiving hole 11.

[0030] The connecting section 22 of the plug pin 2 is a step structure with an outer diameter of one end smaller than that of the other end. The small diameter portion of the connecting section 22 of the plug pin 2 is inserted into the plug pin receiving hole 11 of the plastic body 1, and the large diameter portion of the connecting section 22 of the plug pin 2 is stopped on the outer end surface of the plastic body 1. By designing the connecting section 22 of the plug pin 2 as a step structure, it is helpful to improve the connection and positioning of the plug pin 2 and the plastic body 1, and it is helpful to improve the insertion and extraction retention force of the plug pin 2 and the plastic body 1, so as to prevent the plug pin 2 from being pulled out when plugging and unplugging the plug connector.

[0031] The outer diameter of the plug-in conductive section 21 of the plug pin 2 is smaller than the outer diameter of one end of the connecting end, and the edge of one end of the connecting section 22 is formed with a chamfered structure or a rounded structure.

[0032] The side wall of the limiting card slot 221 on the outer circumferential wall of the connecting section 22 of the plug pin 2 facing one end of the plug pin 2 is perpendicular to the outer circumferential side surface of the plug pin 2, and the side wall of the limiting card slot 221 facing the other end of the plug pin 2 is a chamfered inclined surface structure, and the inner side surface of the end of the clamping claw 121 facing the plug pin 2 can be flush with the bottom surface of the limiting card slot 221, and the end surface of the end of the clamping claw 121 facing the end of the plug pin 2 can be flush with the side wall of the limiting card slot 221 facing the end of the plug pin 2. When the plug pin 2 is assembled in place in the plug pin 2 receiving groove of the plastic body 1, the end of the clamping claw 121 and the limiting card slot 221 of the plug pin 2 are flush with each other in a direction perpendicular to each other, which is conducive to improving the stability of the buckle connection and effectively supporting the plug pin 2, thereby preventing the plug pin 2 from being tilted in the plug pin 2 receiving groove.

[0033] The inner side of each cantilever structure 12 in the pin receiving hole 11 facing the pin 2 can be fitted with the outer side of one end of the connecting section 22 of the pin 2. The cantilever structure 12 fits with the pin 2, thereby achieving the effect of straightening and supporting the pin 2.

[0034] The connecting section 22 of the plug pin 2 is a two-step structure, and the middle part of the connecting section 22 forms a non-circular cross-section stop-limiting section 23, and the plug pin receiving hole 11 of the plastic body 1 is provided with a non-circular hole section 14 matching the non-circular cross-section of the plug pin 2. The cross-section of the non-circular cross-section of the stop-limiting section 23 is a non-circular structure matching the cross-section of the middle part of the connecting section 22 of the plug pin 2. The above structure can realize the stop-rotation positioning of the plug pin 2 in the plug pin receiving hole 11, and prevent the rotation of the plug pin 2 from affecting the stable transmission of the electrical signal.

Claims

1. An enhanced socket connector, comprising a plastic body (1) and a metal plug pin (2), wherein a plug pin receiving hole (11) is formed inside the plastic body, the plug pin is inserted into the plug pin receiving hole, one end of the plug pin forms a plug-in conductive section (21) capable of electrically conducting with a plug connector, and the other end of the plug pin forms a connecting section (22), a limiting groove (221) is provided on the circumferential outer wall of the connecting section of the plug pin, a plurality of cantilever structures (12) capable of elastically swinging along the radial direction of the plug pin receiving hole are provided on the inner side wall of the plug pin receiving hole of the plastic body, a claw (121) is formed at the free end of the cantilever structure, and the claw can be engaged with the limiting groove on the circumferential outer wall of the plug pin to realize axial stop and positioning of the plug pin in the plug pin receiving hole, characterized in that: A limit ring (3) is also provided, which can be fixedly inserted in the annular gap between the cantilever structure and the inner side wall of the pin accommodating hole, and the inner side wall of the limit ring is tightly pressed against the side wall of the cantilever structure facing away from the pin to prevent the cantilever structure from elastically swinging in the direction away from the pin.

2. The enhanced socket connector according to claim 1, characterized in that: An inner concave snap ring (31) is provided on the circumferential outer wall of the limit plug ring, and an inner convex snap ring (13) is provided on the inner wall of the pin receiving hole. The inner convex snap ring can be inserted into the inner concave snap ring to realize axial stop positioning of the limit plug ring in the pin receiving hole.

3. The enhanced socket connector according to claim 2, characterized in that: A chamfered inclined guide surface (32) is formed on the side wall of one end of the stop ring facing the root of the cantilever structure, and the inner convex snap ring on the inner side wall of the pin receiving hole is an undercut structure with a chamfered surface or a rounded surface facing the free end of the cantilever structure. During the insertion of the stop ring from the opening of one end of the pin receiving hole, its chamfered inclined guide surface first contacts the chamfered surface or the rounded surface of the inner convex snap ring to achieve guidance.

4. The enhanced socket connector according to claim 1, characterized in that: The pin accommodating hole is a stepped hole with an inner diameter at one end being larger than that at the other end. The root of the cantilever structure is located on a stepped surface formed between the two ends of the pin accommodating hole. The free end of the cantilever structure extends toward one end of the pin accommodating hole. The claw extends obliquely from the end of the cantilever structure toward the axial direction of the pin accommodating hole. The inner side wall of one end of the limit ring is an inclined surface matching the outer side wall shape of the claw. The other end of the limit ring is tightly against the stepped surface formed between the two ends of the pin accommodating hole.

5. The enhanced socket connector according to claim 1, characterized in that: The connecting section of the plug pin is a step structure with an outer diameter of one end smaller than that of the other end. The small diameter portion of the plug pin connecting section is inserted into the pin accommodating hole of the plastic body, and the large diameter portion of the plug pin connecting section is stopped on the outer end surface of the plastic body.

6. The enhanced socket connector according to claim 5, characterized in that: The outer diameter of the plug-in conductive section of the plug pin is smaller than the outer diameter of one end of the connecting end, and the edge of one end of the connecting section is formed with a chamfered structure or a rounded structure.

7. The enhanced socket connector according to claim 5, characterized in that: The side wall of the limiting slot on the circumferential outer wall of the pin connecting section facing one end of the pin is perpendicular to the circumferential outer side surface of the pin, and the side wall of the limiting slot facing the other end of the pin is a chamfered inclined surface structure, the inner side surface of the end of the claw facing the direction of the pin can be flush with the bottom surface of the limiting slot, and the end surface of the end of the claw facing one end of the pin can be flush with the side wall of the limiting slot facing one end of the pin.

8. The enhanced socket connector according to claim 5, characterized in that: The inner side surface of each cantilever structure in the plug pin accommodating hole facing the plug pin can be fitted with the outer side surface of one end of the plug pin connecting section.

9. The enhanced socket connector according to claim 5, characterized in that: The connecting section of the plug pin is a two-step structure, and the middle part of the connecting section forms a non-circular cross-section stop limit section (23), and the plug pin receiving hole of the plastic body is provided with a non-circular hole section (14) matching the non-circular cross-section of the plug pin, and the cross-section of the non-circular cross-section of the plug pin connecting section matches the cross-section of the middle part of the plug pin connecting section.

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