Jack and connector using same
By designing an inner spring with a bump and wavy bending structure, as well as an outer sheath for positioning the shrapnel and tear ribs, the problems of weak current carrying capacity and low assembly efficiency of the existing connector jack structure are solved, and higher current carrying capacity and assembly efficiency are achieved.
Patent Information
- Application Number
- CN202421405817.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-06-19
AI Technical Summary
The jack structure of the existing new energy vehicle connectors has problems such as small number of contacts, weak current carrying capacity, low assembly efficiency, and poor positioning elasticity. It needs to be improved and optimized to improve the overall performance.
A socket is designed, including an inner spring and an outer sheath, with convex points at both ends of the inner spring, and a wavy bending and waist-retracting structure in the middle of the spring to add contacts; the outer sheath is equipped with positioning shrapnel and tearing ribs for positioning and anti-rotation during assembly.
It improves the current carrying capacity of the jack, improves assembly efficiency, enhances positioning elasticity, and extends service life.
Smart Images
Figure CN222883894U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of connector contacts, in particular to a socket and a connector using the socket. Background Art
[0002] At present, the connectors of new energy vehicles need to have a jack for quick plugging. The jack cooperates with the pin to transmit current through the contact point, and the end of the jack is crimped with the wire. However, the jack structure of the existing technology has a small number of contact points and weak current carrying capacity; lacks an effective anti-rotation structure, and requires repeated trial and error during assembly, resulting in low assembly efficiency; and the positioning spring has poor elasticity and is easy to yield, resulting in positioning failure. The jack structure needs to be improved and optimized to improve the overall performance of the connector. Utility Model Content
[0003] In view of the defects of the prior art, the utility model provides a jack and a connector using the jack, which has the advantages of strong current carrying capacity, high assembly efficiency, good positioning spring elasticity, etc.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0005] A jack comprises an inner spring and an outer sheath, wherein the inner spring is a cylindrical structure with a circular cross section, the two ends of the cylindrical structure are connecting rings, a plurality of convex points are evenly distributed on the outer surface of the connecting ring, the two connecting rings are connected by a plurality of spring leaves evenly distributed along the circumferential direction and extending along the axial direction, the outer sheath is wrapped around the outside of the inner spring, an anti-rotation structure and a positioning spring leaf are provided on the outer sheath, which are respectively used for radial positioning and axial positioning when the jack and the socket insulator are assembled, and a wire connecting portion is provided at the tail end of the outer sheath.
[0006] Furthermore, the spring leaf approaches the inner spring axis to form a waist and bends in a wave shape to form a plurality of contact points.
[0007] Furthermore, the wave-shaped bend of the spring sheet forms at least two inwardly concave wave valleys, and contact points contacting with the insertion pins are formed at the inwardly concave wave valleys.
[0008] Furthermore, the positioning spring piece is a sheet-like spring claw with a front end connected to the outer sheath and a rear end tilted outward, and a split groove is provided in the middle of the positioning spring piece along the axial direction of the insertion hole.
[0009] Furthermore, there are two positioning springs, which are symmetrically distributed on both sides of the outer sheath.
[0010] Furthermore, the anti-rotation structure is a tear rib arranged on the outer sheath, and the tear rib is distributed on the central axis of the positioning spring piece. The rear end of the tear rib is connected to the outer sheath, and the front end is tilted outward. The tear rib cooperates with the anti-rotation groove on the connector insulator to play an anti-error and anti-rotation role during assembly.
[0011] Furthermore, the tearing ribs are provided with two groups, which are arranged opposite to each other, and each group has two tearing ribs, which are respectively located at the front port of the outer sheath and on the outer wall of the rear end of the positioning shrapnel.
[0012] Furthermore, positioning bosses are respectively provided at the front end and the rear end of the outer sheath, and the positioning bosses are used to achieve axial fixation of the inner spring, and the positioning bosses are formed by inwardly stamping the outer sheath.
[0013] Furthermore, the wire connection portion at the tail end of the outer sheath is a crimping wing or a welding structure.
[0014] Furthermore, the crimping wing is provided with a convex rib perpendicular to the axial direction of the insertion hole, and the convex rib protrudes outward.
[0015] Furthermore, the outer sheath and the inner spring are both formed by stamping and rolling. When the outer sheath is sleeved on the outside of the inner spring, it is necessary to ensure that the seam of the inner spring and the seam of the outer sheath are staggered by 180 degrees.
[0016] Furthermore, circular holes are respectively provided at the seam of the outer sheath and at the position opposite to the seam of the outer sheath, and circumferential positioning during assembly is performed through the circular holes to ensure the relative position of the inner spring and the seam of the outer sheath.
[0017] Furthermore, dovetail grooves and dovetail pieces are respectively provided on both sides of the seam of the outer sheath, and when rolling, the dovetail grooves and dovetail pieces overlap each other to realize the circumferential connection of the outer sheath.
[0018] A connector comprises a plug and a socket, wherein the socket comprises a socket housing, a socket insulator and a jack, wherein the jack adopts the above-mentioned jack, the jack is installed in the socket insulator and cooperates with a round pin on the plug, and the socket insulator is provided with an anti-rotation groove corresponding to the anti-rotation structure of the jack and a positioning groove corresponding to the positioning spring.
[0019] The positioning groove is arranged at the front end of the anti-rotation groove, and the positioning groove matches the positioning spring piece in shape and size. After the socket is installed in place, the positioning groove and the positioning spring piece stop cooperate to prevent the socket from moving to the rear end and preventing the socket from rotating radially.
[0020] The anti-rotation groove is arranged at the rear port of the socket insulator. The anti-rotation groove is designed as a trumpet-shaped opening and is closed at one end close to the positioning groove to form a gap matching the width of the anti-rotation structure, and is connected to the positioning groove through the gap.
[0021] The utility model has the following beneficial effects:
[0022] The jack is designed with positioning springs and tearing ribs on the outer sheath, which play an anti-rotation and positioning role during assembly, and cooperate with the corresponding positioning grooves and anti-rotation grooves on the insulator to improve assembly efficiency.
[0023] By improving the structure of the inner spring and designing convex points at both ends, the contact points between the inner spring and the outer sheath are increased. By designing a wavy bend and waisted structure in the middle of the reed, the contact points between the reed and the pin are increased, thereby improving the current-carrying capacity of the socket. The positioning spring has increased elasticity and prolonged service life by means of split grooves. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 A schematic diagram of the structure of the jack of the utility model;
[0025] Figure 2 Schematic diagram of the structure of the inner spring;
[0026] Figure 3 Schematic diagram of the structure of the outer sheath;
[0027] Figure 4 Schematic diagram of the structure of the socket insulator;
[0028] Figure 5 Schematic cross-sectional view of the socket assembly in the socket insulator.
[0029] Figure numerals: jack 10, inner spring 100, connecting ring 101, spring leaf 102, protrusion 103, trough 104; outer sheath 200, positioning boss 201, positioning spring leaf 202, splitting groove 203, tearing rib 204, crimping wing 205, round hole 206; socket insulator 20, positioning groove 21, anti-rotation groove 22, flange 23. DETAILED DESCRIPTION
[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0031] like Figure 1-3 As shown, the utility model provides a socket, which consists of an inner spring 100 and an outer sheath 200. The outer sheath 200 is wrapped around the outside of the inner spring 100. The inner spring 100 and the outer sheath 200 are both made of metal through stamping and rolling.
[0032] like Figure 2 As shown, Figure 2 (a) is a schematic diagram of the three-dimensional structure of the inner spring. Figure 2(b) is a schematic diagram of a longitudinal section of an inner spring, wherein the inner spring 100 is a cylindrical structure with a circular cross section, and is used for a corresponding circular plug pin. Both ends of the cylindrical structure are connecting rings 101, and a plurality of spring leaves 102 evenly distributed along the circumferential direction and extending along the axial direction are connected between the two connecting rings 101. The spring leaves 102 as a whole are close to the axis of the inner spring 100 to form a waist and are wavy-shaped and bent to form a plurality of contacts; specifically, the wavy bending of the spring leaves 102 forms at least two concave troughs 104, and the concave troughs 104 contact the plug pin to form contacts. The multi-contact structure can reduce the contact resistance and improve the current carrying capacity of the socket.
[0033] The outer surface of the connecting ring 101 is evenly distributed with a plurality of protrusions 103, which are used to contact the outer sheath 200 and guide the current on the inner spring 100 to the outer sheath 200. The even distribution of the plurality of protrusions 103 is conducive to reducing the resistance.
[0034] When the outer sheath 200 is assembled with the inner spring 100, the outer sheath 200 is wrapped around the outside of the inner spring 100 to play a circumferential positioning role for the inner spring 100; inward positioning bosses 201 are formed at both ends of the outer sheath 200 by stamping, and the positioning bosses 201 correspond to the end surface positions of the inner spring 100 and are used to perform axial positioning of the inner spring 100.
[0035] The tail of the outer sheath 200 is provided with a wire connecting portion, which may be a crimping wing 205 or a welding portion, and the connection with the wire is achieved by welding.
[0036] like Figure 1 Or as shown in 3, where Figure 3 (a) and Figure 3 (b) are schematic diagrams of the three-dimensional structure of the outer sheath 200 at different angles. The main part of the outer sheath 200 is cylindrical, and the tail end is integrally connected with a crimping wing 205 for crimping the wire. The crimping wing 205 is provided with a convex rib protruding outward perpendicular to the axial direction of the jack, and the convex rib increases the rigidity of the crimping wing 205 and improves the crimping strength.
[0037] It should be noted that in the present invention, the end of the outer sheath 200 away from the crimping wing 205 (wire connection part) is defined as the front end, and the end close to the crimping wing 205 (wire connection part) is the rear end. The front and rear of the jack in the present invention are defined and distinguished in this way.
[0038] Furthermore, a positioning spring piece 202 is provided on the outer sheath 200. The positioning spring piece 202 is a sheet-like claw structure formed by stamping, with a front end connected to the outer sheath 200 and a rear end tilted outward. A split groove 203 is provided in the middle of the positioning spring piece 202 along the axial direction of the socket. Preferably, there are two positioning spring pieces 202, which are symmetrically distributed on both sides of the outer sheath 200. When the socket 10 is installed in the insulator, the positioning spring piece 202 plays an axial positioning role. The bifurcation in the middle of the spring piece is conducive to increasing the elasticity of the spring piece, and the spring piece also plays a circumferential anti-rotation role for the socket.
[0039] The outer sheath 200 is provided with an anti-rotation structure, which is a tear rib 204 provided on the outer sheath 200. The tear rib 204 is provided at a position corresponding to the central axis of the positioning spring piece 202. The rear end of the tear rib 204 is connected to the outer sheath 200, and the front end is tilted outward. The tear rib 204 cooperates with the anti-rotation groove on the connector insulator, and plays an anti-error and anti-rotation role when the jack 10 is assembled into the connector insulator.
[0040] Furthermore, the tear ribs 204 are provided in two groups, corresponding to two positioning spring pieces 202 respectively, and each group of tear ribs 204 has two, which are respectively located at the front port of the outer sheath 200 and on the outer wall of the rear end of the positioning spring piece 202, and the tear ribs 204 are distributed on the central axis of the positioning spring piece 202.
[0041] The outer sheath 200 and the inner spring 100 of the jack are both formed by stamping and rolling. When the outer sheath 200 is arranged outside the inner spring 100, it is necessary to ensure that the seam of the inner spring 100 and the seam of the outer sheath 200 are staggered by 180 degrees from each other; the axial center line of the positioning spring piece 202 on the outer sheath 200 is 90 degrees away from the seam of the outer sheath 200.
[0042] In order to facilitate the positioning during assembly, Figure 3 As shown, circular holes 206 are respectively provided at the seam of the outer sheath 200 and at the position opposite to the seam of the outer sheath 200 (i.e., the position 180° away). The circular holes 206 are used to circumferentially position the spring leaf 102 of the inner spring 100 during assembly, ensuring that the seam of the inner spring 100 and the seam of the outer sheath 200 are staggered by 180 degrees to ensure the strength of the jack.
[0043] A dovetail groove and a dovetail piece are respectively provided on both sides of the seam of the outer sheath 200. When rolling, the dovetail groove and the dovetail piece overlap each other to achieve the circumferential connection of the outer sheath 200; the seam positions of the dovetail groove and the dovetail piece are further fixedly connected by welding and riveting.
[0044] Furthermore, the utility model also provides a connector, which includes a plug and a socket, the plug is provided with a round pin, the socket is installed with the jack described in the utility model, and the jack 10 is installed in the socket housing through a socket insulator 20.
[0045] like Figure 4-5 As shown, Figure 4 (a) and Figure 4 (b) are schematic diagrams of the three-dimensional structure of the socket insulator observed from the head and the tail respectively. The socket insulator 20 is provided with a positioning groove 21 corresponding to the positioning spring piece 202 on the outer sheath 200 of the socket and an anti-rotation groove 22 corresponding to the anti-rotation structure. The positioning groove 21 is roughly rectangular and matches the size and dimensions of the positioning spring piece 202. The anti-rotation groove 22 is arranged at the rear end of the positioning groove 21. The anti-rotation groove 22 is designed to be a trumpet-shaped opening, and is closed at one end close to the positioning groove 21 to a gap matching the width of the tear rib 204.
[0046] The jack 10 is inserted from the rear end of the socket insulator 20 and pushed forward for assembly. During assembly, the tearing rib 204 at the head of the jack outer sheath 200 is gradually adjusted to the correct position through the guidance of the bell mouth on the anti-rotation groove 22, and then the jack 10 continues to be assembled forward across the gap until the positioning spring 202 pops up and falls into the positioning groove 21, and is assembled in place. The rear end of the positioning spring 202 cooperates with the rear end stop of the positioning groove 21 to prevent the jack 10 from moving backward. At the same time, the side of the positioning spring 202 cooperates with the side of the positioning groove 21 to play a circumferential positioning role for the jack 10. At this time, the tearing rib 204 at the rear end of the positioning spring 202 happens to be stuck in the gap of the anti-rotation groove 22, and plays an anti-rotation role in the use process after assembly. The cooperation of the anti-rotation groove 22 and the anti-rotation structure can effectively guide and prevent wrong installation during the assembly of the jack, improve assembly efficiency, and do not need frequent trial and error, and can also play an anti-rotation role after assembly.
[0047] The front end of the socket insulator 20 is also provided with an inwardly protruding flange 23. After the socket 10 is assembled in place, the front end of the socket 10 contacts the flange 23 to play an axial positioning role and prevent the socket 10 from falling out forward.
[0048] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.
Claims
1. A socket, comprising an inner spring (100) and an outer sheath (200), characterized in that: The inner spring (100) is a cylindrical structure with a circular cross section. Both ends of the cylindrical structure are connecting rings (101). A plurality of protrusions (103) are evenly distributed on the outer surface of the connecting ring (101). The two connecting rings (101) are connected via a plurality of spring leaves (102) evenly distributed in the circumferential direction and extending in the axial direction. The outer sheath (200) is wrapped around the outside of the inner spring (100). The outer sheath (200) is provided with an anti-rotation structure and a positioning spring leaf (202), which are respectively used for radial positioning and axial positioning when the jack (10) and the socket insulator (20) are assembled. A wire connecting portion is provided at the rear end of the outer sheath.
2. A socket according to claim 1, characterized in that: The spring leaf (102) approaches the axis of the inner spring (100) to form a waist and bends in a wave shape to form a plurality of contact points.
3. A socket according to claim 2, characterized in that: The wave-shaped bend of the spring sheet (102) forms at least two inwardly concave wave valleys (104), and contact points that contact with the insertion pins are formed at the inwardly concave wave valleys (104).
4. A socket according to claim 1, characterized in that: The positioning spring piece (202) is a sheet-shaped spring claw with a front end connected to the outer sheath (200) and a rear end tilted outwards. A split groove (203) is provided in the middle of the positioning spring piece (202) along the axial direction of the insertion hole.
5. A socket according to claim 4, characterized in that: There are two positioning spring pieces (202), which are symmetrically distributed on both sides of the outer sheath (200).
6. A socket according to claim 1, characterized in that: The anti-rotation structure is a tear rib (204) provided on the outer sheath (200), the tear rib (204) being distributed on the central axis of the positioning spring piece (202), the rear end of the tear rib (204) being connected to the outer sheath (200), and the front end being tilted outwards, the tear rib (204) cooperates with the anti-rotation groove (22) on the socket insulator (20), and plays an anti-error and anti-rotation role during assembly.
7. A socket according to claim 6, characterized in that: The tear ribs (204) are provided in two groups, and the two groups of tear ribs (204) are arranged opposite to each other. Each group of tear ribs (204) has two tear ribs, which are respectively located at the front end of the outer sheath (200) and on the outer wall of the rear end of the positioning spring piece (202).
8. The jack according to claim 1, characterized in that: The front end and the rear end of the outer sleeve (200) are respectively provided with positioning bosses (201), the positioning bosses (201) being used to achieve axial fixation of the inner spring (100), and the positioning bosses (201) are formed by inwardly stamping the outer sleeve (200).
9. The jack according to claim 1, characterized in that: The wire connection portion at the tail end of the outer sheath (200) is a crimping wing (205) or a welding structure.
10. A socket according to claim 9, characterized in that: The crimping wing (205) is provided with a convex rib perpendicular to the axial direction of the insertion hole, and the convex rib protrudes outwards.
11. A socket according to claim 1, characterized in that: The outer sheath (200) and the inner spring (100) are both formed by stamping and rolling. When the outer sheath (200) is sleeved on the outside of the inner spring (100), it is necessary to ensure that the seam of the inner spring (100) and the seam of the outer sheath (200) are staggered by 180 degrees.
12. A socket according to claim 11, characterized in that: Circular holes (206) are respectively provided at the seam of the outer sheath (200) and at the position opposite to the seam of the outer sheath (200). Circumferential positioning during assembly is performed through the circular holes (206) to ensure the relative position of the seam between the inner spring (100) and the outer sheath (200).
13. The jack according to claim 11, characterized in that: Dovetail grooves and dovetail pieces are respectively provided on both sides of the seam of the outer sheath (200); when rolled, the dovetail grooves and dovetail pieces overlap each other to achieve circumferential connection of the outer sheath (200).
14. A connector, comprising a plug and a socket, wherein the socket comprises a socket housing, a socket insulator (20) and a socket, characterized in that: The socket adopts the socket (10) according to any one of claims 1 to 13, the socket (10) is installed in the socket insulator (20), and cooperates with the round pin on the plug, and the socket insulator (20) is provided with an anti-rotation groove (22) corresponding to the anti-rotation structure of the socket and a positioning groove (21) corresponding to the positioning spring (202).
15. A connector according to claim 14, characterized in that: The positioning groove (21) is arranged at the front end of the anti-rotation groove (22), and the positioning groove (21) matches the positioning spring piece (202) in shape and size. After the socket is installed in place, the positioning groove (21) and the positioning spring piece (202) cooperate to prevent the socket (10) from moving toward the rear end.
16. A connector according to claim 14, characterized in that: The anti-rotation groove (22) is arranged at the rear end of the socket insulator (20), the anti-rotation groove (22) is designed as a trumpet-shaped opening, and is closed at one end close to the positioning groove (21) to form a gap matching the width of the anti-rotation structure, and is connected to the positioning groove (21) through the gap.