Laminated contact terminal applied to high-voltage connector
Through the multi-layer shrapnel superposition design and multi-contact contact structure of stacked contact terminals, the problem of lack of elasticity of chip terminals in high-voltage connectors is solved, the current carrying capacity and vibration resistance are improved, and the material utilization and cost are achieved dual advantages.
Patent Information
- Application Number
- CN202420809929.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-18
Smart Images
Figure CN222282287U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of laminated contact terminals, in particular to a laminated contact terminal applied to a high-voltage connector. Background Art
[0002] High-voltage connectors are widely used in the field of electric vehicles. The function of high-voltage connectors is current transmission, and the carrier for current transmission is the contact terminal. The terminals usually refer to male terminals and female terminals. The female terminal needs to have a certain degree of elasticity in contact, and the structure is more complex than the male terminal. At present, the female terminals widely used in high-voltage connectors are basically divided into two categories, one is round terminals and the other is sheet terminals. With the continuous innovation of technology and the cost control of major car companies, round terminals have gradually been replaced by later sheet terminals in recent years due to high costs and other factors. The so-called sheet terminals usually refer to terminals formed by stamping. The advantages of this type of terminal are high plasticity, high material utilization, high mass production, and low cost, which are favored by the contemporary market.
[0003] Stamped sheet terminals often need to meet the working environment of high voltage and current. The original technical status terminal design is very bulky. If a larger current carrying capacity is required, the contact area needs to be enlarged. If the contact area is too large, the contact spring has no elasticity, and the insertion and extraction force and anti-vibration effect are also relatively poor. Utility Model Content
[0004] In order to overcome the existing deficiencies, the utility model provides a laminated contact terminal applied to a high voltage connector.
[0005] The technical solution adopted by the utility model to solve its technical problems is: a stacked contact terminal applied to a high-voltage connector, comprising an auxiliary spring sheet and a contact spring sheet; the auxiliary spring sheet comprises an upper auxiliary spring sheet and a lower auxiliary spring sheet, and the contact spring sheet comprises an upper contact spring sheet and a lower contact spring sheet; the upper auxiliary spring sheet, the upper contact spring sheet, the lower contact spring sheet and the lower auxiliary spring sheet are fixedly connected by rivets in the order from top to bottom; a front row of auxiliary spring sheets and a rear row of auxiliary spring sheets are arranged at the front end of the auxiliary spring sheets, wherein the lengths of the front row of auxiliary spring sheets and the rear row of auxiliary spring sheets are inconsistent, they are arranged alternately, and the lengths of the gaps between adjacent front row of auxiliary spring sheets and rear row of auxiliary spring sheets are also arranged alternately; the contact spring sheets comprise a front row of contact spring sheets and a rear row of contact spring sheets, wherein the front row of contact spring sheets and the rear row of contact spring sheets are arranged alternately, the front end is a flattened design, and the root is a tearing structure.
[0006] According to another embodiment of the utility model, further comprising: an auxiliary rear-row contact point is provided on the rear-row auxiliary spring sheet, and an auxiliary front-row contact point is provided on the front-row auxiliary spring sheet.
[0007] According to another embodiment of the utility model, it further includes that the flattening design of the front row contact spring pieces is to flatten the middle part of the spring pieces, and the flattening design of the rear row contact spring pieces is to flatten the ends of the spring pieces, wherein a gap is left between the front row contact spring pieces and the rear row contact spring pieces.
[0008] According to another embodiment of the utility model, further comprising: the tails of the auxiliary spring piece and the contact spring piece are provided with a plurality of corresponding groups of through holes, and the through holes are convenient for rivets to be inserted and fixed.
[0009] According to another embodiment of the utility model, further comprising: a transfer copper bar is provided between the auxiliary spring piece and the contact spring piece, the transfer copper bar is fixed to the auxiliary spring piece and the contact spring piece by rivets, and a bending piece is provided on one side of the tail.
[0010] According to another embodiment of the utility model, the bending sheet is integrally connected to the transfer copper busbar, a connecting hole is provided in the middle, and a nut is provided in the connecting hole.
[0011] According to another embodiment of the utility model, the contact spring is further extended in the tail direction and is integrally connected with a positioning copper bar; the positioning copper bar is provided with a bolt fixing hole, and a convex inlay structure is provided around the bolt fixing hole; and a baffle is provided at the tail end of the auxiliary spring.
[0012] The beneficial effect of the utility model is that in the field of new energy electric vehicles, this new type of stacked stamping terminal is used in high-voltage connectors. This terminal has achieved structural innovation and adopts a design of multi-layer spring sheets superimposed with multiple contact points, which improves the performance, namely the current carrying capacity and the vibration and impact resistance, and has the advantages of high material utilization and low cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0014] Figure 1 The abstract is an assembly drawing of the utility model;
[0015] Figure 2 is a three-dimensional structural diagram of the first embodiment;
[0016] Figure 3 is an exploded view of the first embodiment;
[0017] Figure 4 is a three-dimensional structural diagram of the second embodiment;
[0018] Figure 5 is an exploded view of the second embodiment;
[0019] Figure 6 This is a schematic diagram of the structure of the auxiliary shrapnel
[0020] Figure 7 It is a schematic diagram of the structure of the contact spring.
[0021] In the figure, 1, auxiliary spring piece, 2, contact spring piece, 3, upper auxiliary spring piece, 4, lower auxiliary spring piece, 5, upper contact spring piece, 6, lower contact spring piece, 7, rivet, 8, front row auxiliary spring piece, 9, rear row auxiliary spring piece, 10, front row contact spring piece, 11, rear row contact spring piece, 12, auxiliary rear row contact point, 13, auxiliary front row contact point, 14, through hole, 15, transfer copper bus, 16, bending piece, 17, connecting hole, 18, nut, 19, positioning copper bus, 20, bolt fixing hole. DETAILED DESCRIPTION
[0022] like Figure 1 It is a structural schematic diagram of the utility model, a laminated contact terminal applied to a high-voltage connector, characterized in that it includes an auxiliary spring piece 1 and a contact spring piece 2; the auxiliary spring piece 1 includes an upper auxiliary spring piece 3 and a lower auxiliary spring piece 4, and the contact spring piece 2 includes an upper contact spring piece 5 and a lower contact spring piece 6; the upper auxiliary spring piece 3, the upper contact spring piece 5, the lower contact spring piece 6, and the lower auxiliary spring piece 4 are fixedly connected by rivets 7 in order from top to bottom; the front end of the auxiliary spring piece 1 is provided with a front row auxiliary spring piece 8 and a rear row auxiliary spring piece 9, wherein the lengths of the front row auxiliary spring piece 8 and the rear row auxiliary spring piece 9 are inconsistent, they are arranged alternately, and the lengths of the gaps between adjacent front row auxiliary spring pieces 8 and rear row auxiliary spring pieces 9 are also arranged alternately; the contact spring piece 2 includes a front row contact spring piece 10 and a rear row contact spring piece 11, wherein the front row contact spring piece 10 and the rear row contact spring piece 11 are arranged alternately, the front end is a flattened design, and the root is a tearing structure.
[0023] According to another embodiment of the utility model, further comprising: auxiliary rear row contact points 12 are provided on the rear row auxiliary spring pieces 9, auxiliary front row contact points 13 are provided on the front row auxiliary spring pieces 8, the gaps between the front row auxiliary spring pieces 8 and the rear row auxiliary spring pieces 9 are of different lengths, and the contact points are divided into auxiliary rear row contact points 12 and auxiliary front row contact points 13. Such a design makes the contact more stable and has stronger mechanical resistance.
[0024] According to another embodiment of the utility model, the flattening design of the front row contact spring pieces 10 is to flatten the middle part of the spring pieces, and the flattening design of the rear row contact spring pieces 11 is to flatten the ends of the spring pieces, wherein a gap is left between the front row contact spring pieces 10 and the rear row contact spring pieces 11.
[0025] Specifically, the roots of the front contact springs 10 and the rear contact springs 11 are designed to be tear structures. Such a design can save materials, reduce the volume and improve the contact performance. The contact area of the front contact springs 10 and the rear contact springs 11 is designed to be elliptical. The contact point ellipse of the contact area is formed by thinning the material, that is, flattening it. Such a design is to increase the contact interface, with the aim of improving the current carrying capacity.
[0026] According to another embodiment of the utility model, further comprising: the tails of the auxiliary spring piece 1 and the contact spring piece 2 are provided with a plurality of corresponding groups of through holes 14, and the through holes 14 are convenient for the rivets 7 to be inserted and fixed. Example
[0027] According to another embodiment of the utility model, further comprising: a transfer copper bar 15 is provided between the auxiliary spring piece 1 and the contact spring piece 2; the transfer copper bar 15 is fixed to the auxiliary spring piece 1 and the contact spring piece 2 by rivets 7; and a bending piece 16 is provided on one side of the tail.
[0028] According to another embodiment of the utility model, the bending piece 16 is integrally connected to the transfer copper bus 15 , a connecting hole 17 is provided in the middle, and a nut 18 is provided in the connecting hole 17 . Example
[0029] According to another embodiment of the utility model, the contact spring piece 2 is further extended in the tail direction and integrally connected with a positioning copper bar 19; the positioning copper bar 19 is provided with a bolt fixing hole 20, and a convex inlay structure is provided around the bolt fixing hole 20; and a baffle is provided at the tail end of the auxiliary spring piece 1.
[0030] In the specific operation process, the male terminal is inserted to the right between the symmetrical contact springs 2 of the female terminal, and passes through the contact points of the front row contact springs 10 and the rear row contact springs 11 in turn. Among them, the laminated contact terminal is also called the female terminal, which is usually used at the plug end or the socket end of the connector. The upper and lower inner contact springs 2 of the laminated terminal are mainly used for current carrying and contact functions, and the upper and lower outer auxiliary springs 1 are mainly designed to provide positive force for the inner contact springs 2 to improve the terminal's resistance to impact and vibration. The contact springs 2 include the front row contact springs 10 and the rear row contact springs 11. This design is designed to reduce the insertion force of the male and female terminals. The principle is that the male and female terminals are in segmented contact during the matching process. The contact points of the front row contact springs 10 are in contact first and then the contact points of the rear row contact springs 11. In this way, the insertion force can be dispersed and not concentrated on one point.
[0031] The above description is only illustrative rather than restrictive of the present invention. Those skilled in the art will understand that many modifications, changes or equivalents may be made without departing from the spirit and scope defined by the appended claims, but all will fall within the scope of protection of the present invention.
Claims
1. A laminated contact terminal for a high voltage connector, characterized in that: The invention comprises an auxiliary spring sheet (1) and a contact spring sheet (2); the auxiliary spring sheet (1) comprises an upper auxiliary spring sheet (3) and a lower auxiliary spring sheet (4); the contact spring sheet (2) comprises an upper contact spring sheet (5) and a lower contact spring sheet (6); the upper auxiliary spring sheet (3), the upper contact spring sheet (5), the lower contact spring sheet (6) and the lower auxiliary spring sheet (4) are fixedly connected by rivets (7) in the order from top to bottom; the front end of the auxiliary spring sheet (1) is provided with a front row auxiliary spring sheet (8) and a rear row auxiliary spring sheet (9), wherein the front row auxiliary spring sheet (8) and the rear row auxiliary spring sheet (9) are of different lengths and are arranged alternately, and the lengths of the gaps between adjacent front row auxiliary spring sheets (8) and rear row auxiliary spring sheets (9) are also arranged alternately; the contact spring sheet (2) comprises a front row contact spring sheet (10) and a rear row contact spring sheet (11), wherein the front row contact spring sheet (10) and the rear row contact spring sheet (11) are arranged alternately, the front end is a flattened design, and the root is a tearing structure.
2. The laminated contact terminal for high voltage connector according to claim 1, characterized in that: The rear row auxiliary spring sheet (9) is provided with an auxiliary rear row contact point (12), and the front row auxiliary spring sheet (8) is provided with an auxiliary front row contact point (13).
3. The laminated contact terminal for high voltage connector according to claim 1, characterized in that: The flattening design of the front row contact spring pieces (10) is to flatten the middle of the spring pieces, and the flattening design of the rear row contact spring pieces (11) is to flatten the ends of the spring pieces, wherein a gap is left between the front row contact spring pieces (10) and the rear row contact spring pieces (11).
4. The laminated contact terminal for high voltage connector according to claim 1, characterized in that: The tails of the auxiliary spring piece (1) and the contact spring piece (2) are provided with a plurality of corresponding groups of through holes (14), and the through holes (14) facilitate insertion and fixing of the rivets (7).
5. The laminated contact terminal for high voltage connector according to claim 1, characterized in that: A transfer copper bar (15) is provided between the auxiliary spring piece (1) and the contact spring piece (2); the transfer copper bar (15) is fixed to the auxiliary spring piece (1) and the contact spring piece (2) via rivets (7); and a bending piece (16) is provided on one side of the tail.
6. The laminated contact terminal for high voltage connector according to claim 5, characterized in that: The bending sheet (16) is integrally connected to the transfer copper busbar (15), a connecting hole (17) is provided in the middle, and a nut (18) is provided in the connecting hole (17).
7. The laminated contact terminal for high voltage connector according to claim 1, characterized in that: The contact spring piece (2) is extended in the tail direction and integrally connected with a positioning copper bar (19); a bolt fixing hole (20) is provided on the positioning copper bar (19), and a convex inlay structure is provided around the bolt fixing hole (20); a baffle is provided at the tail end of the auxiliary spring piece (1).