A terminal with a composite contact structure and a high voltage connector

Abstract

The application discloses a terminal with a composite contact structure, comprising two substrates oppositely arranged and connected at one end and suspended at the other end, wherein one of the substrates is bent in a horizontal direction relative to the other substrate, and spring sheets are arranged on opposite sides of the two bent substrates respectively; the bent substrate floats relative to the other substrate; the application can provide greater contact pressure for the terminal, solve the problem of insufficient contact pressure of the spring sheet, improve the contact resistance, and realize electrical contact by the spring sheet; meanwhile, the end of the cantilever is provided with a protrusion, the protrusion has an electrical contact function, the spring sheet and the end of the cantilever provided with the protrusion realize electrical conduction synchronously, the number of contact points of the terminal is increased, and the contact resistance is further reduced.

Description

Technical Field

[0001] This invention relates to the field of electrical connectors, and more specifically to a terminal and a high-voltage connector having a composite contact structure. Background Technology

[0002] With the increasing popularity of electric vehicles and the rising performance demands, higher requirements are being placed on the power transmission capacity and reliability of on-board high-voltage connection systems. Based on current technological trends and market demands, on-board high-voltage connection systems are increasingly trending towards higher voltage and higher current. A key challenge is achieving both high current carrying capacity and miniaturization and weight reduction of terminals, which presents significant and greater challenges to the development of high-current terminals.

[0003] Under similar current ratings, stamped flat terminals offer better heat dissipation than machined round terminals and allow for more flexible connector layout. Therefore, stamped flat terminals have become the mainstream technology for developing terminals in automotive high-voltage connection systems. Many flat high-current terminals in the industry consist of a rigid pure copper substrate and elastic contact springs fixed to the substrate. However, structures relying solely on contact springs to transfer current are unlikely to significantly reduce contact resistance. Summary of the Invention

[0004] The purpose of this invention is to design a new terminal structure that, while retaining the current-carrying structure of the contact spring, overturns the inherent structural form of the rigid pure copper substrate and sets electrical contact points on the pure copper substrate to reduce the contact resistance of the terminal and improve its current-carrying capacity.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A terminal with a composite contact structure includes two substrates arranged opposite each other, connected at one end and suspended at the other end. In one of the suspended ends of the substrate, one of the substrates is bent in the horizontal direction relative to the other substrate, and springs are respectively provided on the opposite sides of the two bent substrates. The bent substrate floats relative to another substrate.

[0006] In the above technical solution, along the insertion direction, the two ends of the spring are fastened to the side of the base.

[0007] In the above technical solution, a through fixing hole is provided on the substrate, and the end of the spring is fastened in the fixing hole of the substrate.

[0008] In the above technical solution, a protrusion is provided on the suspended end face of the substrate.

[0009] In the above technical solution, the protrusion protrudes along the vertical direction of the side of the substrate.

[0010] In the above technical solution, a groove is provided on the suspended end face of the substrate, and the protrusion is disposed in the groove.

[0011] In the above technical solution, the protrusion and the two sides of the groove respectively form a limiting groove, and one end of the spring is connected to the limiting groove.

[0012] In the above technical solution, the two substrates are suspended at one end and bent towards each other along the axis of the connection.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: This invention changes the structure of traditional high-voltage terminals by optimizing the previously fixed base to create an elastic base in this solution. This results in better tension force during the connection process, ensuring the contact reliability of the spring during connection. By utilizing the elasticity provided by both the base and the spring, the connection efficiency is better guaranteed. This invention improves the contact point with the mating end by adding a protrusion at the end of the base, thereby effectively reducing contact resistance and increasing current carrying capacity. The present invention has a simple structure and, while meeting the requirements of high current carrying capacity, has a smaller volume and weight than similar terminals, which is very beneficial for the miniaturization and weight reduction of terminals, and the spatial layout of the internal structure of the vehicle high voltage connector is thus more flexible. Attached Figure Description

[0014] The present invention will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is a structural diagram of the connection terminal; Figure 2 yes Figure 1 Explosion-proof diagram of the structure; Figure 3 This is a schematic diagram of the structure of the bent substrate; Figure 4 This is a schematic diagram of the matrix structure; Wherein: 1 is the first base, 1-1 is the through hole, 1-2 is the mounting groove, 1-3 is the bend, 1-4 is the fixing hole, 1-5 is the limiting groove, 2 is the second base, 2-1 is the mounting post, 2-2 is the mounting platform, 3 is the spring, and 4 is the protrusion. Detailed Implementation

[0015] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0016] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0017] like Figure 1 and Figure 2 As shown, the terminal block in this embodiment is composed of a first base 1 and a second base 2. The first base 1 and the second base 2 each have a fixing part and an electrical contact part, wherein the fixing parts of the two bases are connected to each other as one unit.

[0018] like Figure 3 and Figure 4 As shown, the fixing part of the first base 1 is provided with a through hole 1-1 and a mounting groove 1-2, and the fixing part of the second base 2 is provided with a mounting post 2-1 and a mounting platform 2-2. When the two are connected, the through hole 1-1 is connected to the mounting post 2-1, and the mounting groove 1-2 is engaged with the mounting platform 2-2. Through this riveting structure, the first base 1 and the second base 2 are fixed together as one unit.

[0019] like Figure 4 As shown, the second substrate 2 is a horizontal structure, and the first substrate 1 is bent in the horizontal direction relative to the second substrate 2, as shown. Figure 3 The portion of the first substrate 1 after bending, as shown, exhibits a certain elastic force under the action of bending points 1-3, such as... Figure 1 and Figure 2 As shown, the bent portion of the first substrate 1 and the corresponding portion of the second substrate 2 become floating ends suspended relative to the fixed portion of the connector. Under the action of external force, the bent first substrate 1 can form a larger opening structure.

[0020] like Figure 2 As shown, springs 3 are provided on the opposite sides of the first substrate 1 and the second substrate 2. The springs 3 provide sufficient contact functionality, such as... Figure 3 As shown, a fixing hole 1-4 is provided at the bend 1-3 of the first base 1, and one end of the spring 3 is connected to the fixing hole 1-4 by a snap fastener. A groove is provided at the end of the conductive contact portion of the first base 1, and a protrusion 4 is provided in the groove. The protrusion 4 and the two ends of the groove respectively form a limiting groove 1-5, and the end of the spring 3 is connected to the limiting groove 1-5 by a snap fastener. The protrusion 4 protrudes vertically along the end face of the base.

[0021] like Figure 1As shown, the terminal structure after connecting the spring 3 has an elastic cantilever structure due to the bending structure of the first base 1. The protrusion 4 and the spring have the same contact function, and the protrusion 4 has a limiting function to prevent misinsertion and protect the spring 3.

[0022] In order to achieve a better elastic connection effect, in this embodiment, at the connection point, the first substrate 1 and the second substrate 2 are bent at a small angle towards each other, so that the floating ends of the first substrate 1 and the floating ends of the second substrate 2 can simultaneously deform at a certain angle towards the middle position, thereby increasing the elastic deformation.

[0023] When the terminals of this embodiment are applied to a high-voltage connector, the terminals of this embodiment are female terminals. When the male terminal inserts into the spring between the first base 1 and the second base 2, the structure of this embodiment, because of the protrusion 4 and the bending structure, can provide greater contact pressure to the terminals, solving the problem of insufficient contact pressure from only the spring and improving contact resistance. While the spring achieves electrical contact, the end of the cantilever is provided with a protrusion, which also has an electrical contact function. The spring and the end of the cantilever are provided with a protrusion to achieve electrical conduction simultaneously, increasing the number of contact points of the terminals and further reducing contact resistance.

[0024] This invention is not limited to the specific embodiments described above. The invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A terminal with a composite contact structure, characterized in that: This includes two substrates that are positioned opposite each other, connected at one end and suspended at the other. In one of the suspended ends of the substrate, one substrate is bent horizontally relative to the other substrate, and springs are respectively provided on the opposite sides of the two bent substrates; The bent substrate floats relative to another substrate.

2. A terminal with a composite contact structure according to claim 1, characterized in that: Along the mating direction, the two ends of the spring are fastened to the side of the base.

3. A terminal with a composite contact structure according to claim 2, characterized in that: The base has a through fixing hole, and the end of the spring is fastened into the fixing hole of the base.

4. A terminal with a composite contact structure according to claim 1, characterized in that: The suspended end face of the substrate is provided with a protrusion.

5. A terminal with a composite contact structure according to claim 4, characterized in that: The protrusion protrudes along the vertical direction of the side of the substrate.

6. A terminal with a composite contact structure according to claim 4, characterized in that: A groove is provided on the suspended end face of the substrate, and the protrusion is disposed in the groove.

7. A terminal with a composite contact structure according to claim 6, characterized in that: The protrusion and the two sides of the groove respectively form a limiting groove, and one end of the spring is connected to the limiting groove.

8. A terminal with a composite contact structure according to claim 1, characterized in that: The two substrates are suspended at one end, and along the axis of the connection, they are bent towards each other at the connection point.

9. A high-voltage connector employing a terminal with a composite contact structure as described in any one of claims 1-9.

Images