An integrated busbar structure

Abstract

The application provides a one-piece BUSBAR structure, which comprises a busbar main body and a terminal head integrally formed with a side edge of the busbar terminal, the terminal head comprising a terminal head main body, a terminal head side wall, a spring piece, a bending part and a contact point, one longitudinal end of the terminal head main body being connected to the side edge of the busbar main body, the terminal head main body being vertically arranged with the side edge of the busbar main body, the two lateral sides of the terminal head main body being symmetrically provided with the terminal head side wall, the other longitudinal end of the terminal head side wall being connected to the spring piece, the bending part being arranged between the spring piece and the side wall, the spring pieces on the two sides being symmetrically bent towards the middle part, and the contact point being arranged in the middle part of the spring piece. The structure improves the elasticity of the elastic part matched with the tuning fork, the spring piece does not yield after long-term durability, and the cooperation reliability of the BUSBAR and the tuning fork is improved.

Description

Technical Field

[0001] This application belongs to the field of automotive connector technology, specifically relating to an integrated BUSBAR structure. Background Technology

[0002] The main function of a car fuse box is to split the current from the alternator or battery into various circuits that are connected to electrical appliances, while also protecting the circuits with fuses.

[0003] As attached Figure 4 The diagram shows a common passenger compartment fuse box in the prior art. Current is shunt through a tuning fork-shaped structure 301 on the BUSBAR (busbar) 302 inside the fuse box. The current is transmitted through the tuning fork 301 to one pin 201 of the fuse 2, and then through the other pin of the fuse to the wiring harness terminal 4, and finally to the corresponding electrical appliance. As shown, when the fuse pin 201 is inserted into the opening of the tuning fork 301, it expands the opening. Because this structure has high rigidity, prolonged expansion can cause material yielding, leading to an enlarged opening and consequently poor contact between the pin 201 and the tuning fork 301.

[0004] See appendix Figure 5 As shown, to improve this problem, the current solution uses an adapter terminal. This involves designing an adapter terminal 4 with a spring 401 that mates with the fuse PIN at one end and a wrap-around spring structure 402 at the other end. The tuning fork opening structure of the existing busbar 5 is modified to a rectangular plug structure. The wrap-around spring structure 402 is inserted into the tuning fork's plug structure. While the adapter terminal maintains effective contact, this increases assembly steps and manufacturing costs. Furthermore, the mating point between the adapter terminal and the tuning fork generates heat, increasing circuit resistance. Summary of the Invention

[0005] This application provides an integrated BUSBAR structure that can maintain effective contact between the pin and the tuning fork, while reducing the assembly process of the aforementioned adapter terminal and the resistance at the contact position.

[0006] An integrated BUSBAR structure includes a busbar body and a terminal head integrally formed from the side of the busbar terminals. The terminal head includes a terminal head body, a terminal head sidewall, a spring, a bending portion, and a contact point. One longitudinal end of the terminal head body is connected to the side of the busbar body, and the terminal head body is perpendicular to the side of the busbar body. Terminal head sidewalls are symmetrically arranged on both transverse sides of the terminal head body. The other longitudinal end of the terminal head sidewall is connected to a spring. A bending portion is provided between the spring and the sidewall. Both springs on both sides are symmetrically bent towards the center, and a contact point is provided in the center of the spring.

[0007] Furthermore, the terminal head may be one or multiple terminals spaced apart.

[0008] Furthermore, the free end of the spring sheet is provided with a spring sheet support point, which is opposite to the bending direction of the spring sheet.

[0009] Furthermore, an inner wall protrusion is provided in the middle of the side wall of the bullet tip on both sides.

[0010] Moreover, the spring support point can abut against the inner wall protrusion.

[0011] Furthermore, the busbar body and the terminal head are made of copper strip as a single piece, and the material of the busbar body is thicker than that of the terminal head.

[0012] In summary, the technical solutions provided in the embodiments of this application have the following technical effects or advantages: The improved structure enhances the elasticity of the spring that engages with the tuning fork, preventing it from yielding even after prolonged use and improving the reliability of the BUSBAR's engagement with the tuning fork.

[0013] The integrated BUSBAR structure of this design also solves the assembly risks and increased manufacturing costs associated with adapter terminal solutions. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the planar structure of this structure.

[0015] Figure 2 This is a three-dimensional structural diagram of the structure.

[0016] Figure 3 This is a schematic diagram of the usage state of this structure.

[0017] Figure 4 This is a schematic diagram of the existing technology.

[0018] Figure 5 This is a schematic diagram of the existing technology.

[0019] Reference numerals: 1. Integrated busbar; 101. Bend; 102. Contact point; 103. Spring support point; 104. End sidewall; 105. Terminal head body; 106. Busbar body; 107. Inner wall boss; 108. Spring; 2. Fuse; 201. PIN; 301. Tuning fork; 302. BUSBAR (busbar); 4. Adapter terminal; 401. Spring that mates with the fuse PIN; 402. Wrap-type spring structure; 5. Existing busbar. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0021] An integrated BUSBAR structure, Figure 1 As shown, the busbar body 106 includes a busbar body 106 and terminal heads. One or more terminal heads are provided on one long side of the busbar body 106 at intervals. For ease of display, only one terminal head structure is shown in the attached figure of this embodiment.

[0022] The terminal head includes a terminal head body 105, a terminal head sidewall 104, a spring 108, a bend 101, and a contact point 102. One longitudinal end of the terminal head body 105 is connected to the side of the busbar body 106, and the terminal head body 105 is perpendicular to the side of the busbar body 106. The terminal head sidewalls 104 are symmetrically arranged on both transverse sides of the terminal head body 105, and the other longitudinal end of the terminal head sidewall 104 is connected to a spring. A bend is provided between the spring and the sidewall, and both springs on both sides are symmetrically bent towards the center. A contact point 102 is provided in the center of the spring. The bend maintains the contact pressure of the contact point 102, ensuring effective contact between the terminals.

[0023] A spring support point 103 is provided at the free end of the spring sheet, and the spring support point 103 is opposite to the bending direction of the spring sheet.

[0024] Figure 2 As shown, the integrated busbar 1 of this structure is made of special-shaped copper strip with different thicknesses. The copper strip material at the main body 106 of the busbar is thicker, which can meet the larger current cutting requirements; while the material at the terminal head is slightly thinner, which makes it easier to bend and obtain symmetrical springs with better elasticity.

[0025] To further enhance the strength of the terminal head, an inner wall boss 107 is provided in the middle of the side wall of the spring head on both sides. The inner wall boss is integrally stamped.

[0026] See appendix Figure 3 As shown, when the safety pin is inserted, the contact point is spread out to both sides, at which point the support point rests against the inner wall protrusion. In this way, the spring forms a simply supported beam, greatly increasing the clamping force on the safety pin.

[0027] The foregoing description is merely an exemplary embodiment of this disclosure and should not be construed as limiting the scope of this disclosure. Any equivalent changes and modifications made in accordance with the teachings of this disclosure shall still fall within the scope of this disclosure. Those skilled in the art will readily conceive of other embodiments of this disclosure upon considering the specification and the disclosure of practical truth. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not described in this disclosure. The specification and embodiments are considered exemplary only, and the scope and spirit of this disclosure are defined by the claims.

Claims

1. An integrated BUSBAR structure, characterized in that, The terminal head is integrally formed from the busbar body and the side of the busbar terminal. The terminal head includes a terminal head body, a terminal head sidewall, a spring, a bending part, and a contact point. One longitudinal end of the terminal head body is connected to the side of the busbar body. The terminal head body is perpendicular to the side of the busbar body. The terminal head sidewalls are symmetrically arranged on both sides of the terminal head body. The other longitudinal end of the terminal head sidewall is connected to the spring. A bending part is provided between the spring and the sidewall. The springs on both sides are symmetrically bent towards the middle. A contact point is provided in the middle of the spring.

2. The integrated BUSBAR structure according to claim 1, characterized in that, The terminal head may be one or multiple terminals spaced apart.

3. The integrated BUSBAR structure according to claim 1, characterized in that, The free end of the spring sheet is provided with a spring sheet support point, which is opposite to the bending direction of the spring sheet.

4. The integrated BUSBAR structure according to claim 3, characterized in that, An inner wall protrusion is provided in the middle of the side wall of the projectile tip on both sides.

5. The integrated BUSBAR structure according to claim 4, characterized in that, The spring support point can abut against the inner wall protrusion.

6. The integrated BUSBAR structure according to claim 1, characterized in that, The busbar body and terminal head are made of copper strip as a single piece, and the material of the busbar body is thicker than that of the terminal head.

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