Multi-contact large-current terminal assembly and connector

Abstract

The multi-contact large-current terminal assembly comprises a base body and contact springs, at least one end of the base body is of a U-shaped structure with three open faces, a plurality of grooves are formed in the inner side face of the U-shaped structure, the two ends of each contact spring are not connected, an independent contact spring is arranged in each groove, and the contact springs are arranged in the grooves. The contact springs and the base body are connected into a whole in a clamped mode through fixing pieces penetrating through the contact springs, and the contact springs in all the grooves do not interfere with one another. According to the scheme, the contact spring fixing piece can provide additional contact pressure and reduce contact resistance; poor contact caused by deflection of the contact spring during plug-in is prevented; the two ends of the mutually independent contact springs are not provided with protruding bending parts, so that the terminal assembly has a smaller structural space, the plurality of independent contact springs can provide a plurality of contact points for the contact end, and the contact performance is ensured.

Description

Technical Field

[0001] The invention relates to the field of connectors, and in particular to a multi-contact high-current terminal assembly and a connector. Background Art

[0002] In order to improve the current carrying capacity, the existing high current terminals are mostly realized by increasing the amount of materials and the terminal volume, but this will increase the weight and volume of the connector accordingly, and the cost will also increase accordingly. Therefore, on the basis of meeting the current carrying capacity, it is necessary to adopt a miniaturized terminal design solution, and the contact spring needs to have multiple contact points to reduce the contact resistance.

[0003] The patent (CN114628932B) discloses a connector terminal, which adopts a U-shaped opening structure and is provided with a closed-loop spring in the U-shaped opening, and utilizes the structure of the spring to achieve the insertion of the U-shaped sheet structure. However, in practical applications, the terminal and connector of this structure still have disadvantages, specifically: 1) When assembling a traditional annular contact spring, it can only rely on its own outward tension to produce a certain contact pressure on the socket base, which will deflect during the plug-in process, resulting in poor contact; 2) When the traditional annular contact spring is used with a U-shaped opening structure, a section of the spring will be squeezed and exposed outside the terminal. The exposed section of the spring is very easy to be damaged during the plug-in process, and the damaged spring will contact other parts of the electrical equipment, thus causing contact failure. Summary of the invention

[0004] The purpose of the present invention is to optimize the design of the existing connector terminal structure, change the contact installation mode, and thus adopt a multi-contact structure to improve the current carrying capacity of the terminal.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A multi-contact high-current terminal assembly comprises a base and a contact spring. The base has at least one end which is a U-shaped structure with three openings, and the inner side surfaces of the U-shaped structure are respectively provided with a plurality of grooves. The two ends of the contact spring are not connected, and an independent contact spring is arranged in each groove. The fixing piece passing through the contact spring clamps the contact spring and the base body together. The contact springs in all grooves do not interfere with each other.

[0006] In the above technical solution, at least one section of the coil of the contact spring is a straight section, and the portion other than the straight section is an arc section.

[0007] In the above technical solution, the straight sections of all the spring coils are in the same direction of the axis of the contact spring, and the straight sections are in contact with the bottom of the groove.

[0008] In the above technical solution, the fixing member includes a sheet-shaped pressing strip, and bending portions are provided at both ends of the pressing strip.

[0009] In the above technical solution, the pressing strip of the fixing member is fitted with the straight section of the contact spring, and the bent portion of the pressing strip is clamped on the base.

[0010] In the above technical solution, an inner recessed hole is arranged at the edge of the outer side surface of the U-shaped structure of the base, and the inner recessed hole is communicated with the groove.

[0011] In the above technical solution, protrusions are respectively provided at both ends of the compression strip.

[0012] In the above technical solution, the bending portion on the straight section has a concave opening structure, and the concave opening structure is stuck in the inner sunken hole.

[0013] In the above technical solution, both ends of the base are U-shaped structures with three sides open, and a number of grooves are arranged on the inner side of each U-shaped structure. The two ends of the contact spring are not connected, and an independent contact spring is arranged in each groove. The fixing piece passing through the contact spring clamps the contact spring and the base together, and the contact springs in all the grooves do not interfere with each other.

[0014] A connector composed of a multi-contact high-current terminal assembly.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: Compared with the traditional annular contact spring, the contact spring fixing member of this solution can provide additional contact pressure and reduce contact resistance; The straight edge of the D-shaped contact spring fits the bottom surface of the groove and is combined with the fastening effect of the fixing piece on the contact spring to prevent poor contact caused by deflection of the contact spring during insertion; The two ends of the independent contact springs have no protruding bent parts, so that the terminal assembly has a smaller structural space, and multiple independent contact springs can provide multiple contact points for the contact end to ensure contact performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will now be described by way of example with reference to the accompanying drawings, in which: Figure 1 It is a schematic diagram of the structure of the terminal base; Figure 2 yes Figure 1 Side view of Figure 3 It is a schematic diagram of the structure of the spring; Figure 4 It is a schematic diagram of the structure of the fixing parts; Figure 5It is a structural schematic diagram of a combination of a spring and a fixing member; Figure 6 is a schematic diagram of the overall structure of an embodiment; Figure 7 is a schematic diagram of the overall structure of another embodiment; Among them: 1 is a base, 2 is a concave hole, 3 is a groove, 4 is a spring, 5 is a fixing part, 5-1 is a protruding part, and 5-2 is an elastic part. DETAILED DESCRIPTION

[0017] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0018] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0019] like Figure 1 and Figure 2 As shown, one end of the terminal base 1 is a U-shaped opening structure, which has the characteristics of opening on three sides. It is worth noting that the U-shaped opening structure is not a jack structure in a traditional connector terminal. A plurality of grooves 3 are arranged on the inner sides of the two opposite sides of the U-shaped opening structure, and a groove is also arranged on the outer side of the side, and a concave hole 2 is also arranged at the end of the outer groove.

[0020] like Figure 3 As shown, the contact spring used in this embodiment is a D-shaped spring structure. The spring coil of the D-shaped spring structure has a straight section and an arc section. The straight section is used to fit with the groove 3 on the base 1, which can more perfectly ensure the installation and fixation of the D-shaped spring.

[0021] like Figure 4 As shown, the fixing member of this embodiment includes a pressing plate 5, and a bending portion is respectively provided at both ends of the pressing plate 5, and the bending portion and the pressing plate 5 form a concave structure. Figure 3 In order to better fix the structure, a protrusion 5-1 is provided at the end of the pressure plate 5, and the protrusion 5-1 can play a role of limiting to prevent the D-shaped spring from sliding off the pressure plate 5. An elastic part 5-2 is provided at one end of the bent part, and the elastic part 5-2 can add elastic squeezing force to the concave structure to achieve fixation. The connection between the fixing piece and the D-shaped spring is as follows: Figure 5 As shown, the pressure plate 5 directly passes through the D-shaped spring, and the pressure plate 5 fits the straight section of the D-shaped spring.

[0022] Embodiment 1 like Figure 6 As shown, one end of the base 1 is a U-shaped opening structure, and two groups of grooves are symmetrically arranged on the inner side of the U-shaped opening structure, and an independent D-shaped spring is arranged in each groove. The fixing member fixes the D-shaped spring in the groove 3, and the elastic part 5-2 of the bent part of the fixing member is stuck in the concave hole 2 of the outer side, thereby fixing the D-shaped spring in the groove 3. In this embodiment, the D-shaped springs in the four grooves are independent structures, and the D-shaped springs do not contact or interfere with each other. The arc end of the D-shaped spring provides a squeezing force for the plug-in terminal, thereby realizing the plug-in function.

[0023] The other end of the substrate 1 is used to connect to the cable inlet. The substrate 1 itself is an integrated structure, which can achieve effective connection between the circuit and the connector.

[0024] Embodiment 2 like Figure 7 As shown, both ends of the base 1 are arranged as U-shaped opening structures, and the installation of the D-shaped spring inside the opening structure is the same as that in the first embodiment.

[0025] Both ends of this embodiment can realize the plug-in function.

[0026] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A multi-contact high-current terminal assembly, comprising a substrate and a contact spring, characterized in that: At least one end of the base is a U-shaped structure with three openings, and a plurality of grooves are respectively arranged on the inner side surfaces of the U-shaped structure. The two ends of the contact spring are not connected, and an independent contact spring is arranged in each groove. The fixing piece passing through the contact spring clamps the contact spring and the base body together. The contact springs in all the grooves do not interfere with each other.

2. A multi-contact high-current terminal assembly according to claim 1, characterized in that: At least one section of the coil of the contact spring is a straight section, and the portion other than the straight section is an arc section.

3. A multi-contact high current terminal assembly according to claim 2, characterized in that: The straight sections of all the coils are in the same direction of the contact spring axis, and the straight sections are in contact with the bottom of the groove.

4. A multi-contact high-current terminal assembly according to claim 1, characterized in that: The fixing member comprises a sheet-shaped pressing strip, and two ends of the pressing strip are provided with bending parts.

5. A multi-contact high-current terminal assembly according to claim 4, characterized in that: The pressing strip of the fixing piece is fitted with the straight section of the contact spring, and the bent portion of the pressing strip is clamped on the base body.

6. A multi-contact high-current terminal assembly according to claim 5, characterized in that: An inner recessed hole is arranged at the edge of the outer side surface of the U-shaped structure of the base body, and the inner recessed hole is communicated with the groove.

7. A multi-contact high current terminal assembly according to claim 6, characterized in that: The bending part of the straight section has a concave opening structure, and the concave opening structure is stuck in the inner sinking hole.

8. The multi-contact high-current terminal assembly according to claim 4, characterized in that: Both ends of the compression strip are respectively provided with protrusions.

9. The multi-contact high-current terminal assembly according to claim 1, characterized in that: Both ends of the base are U-shaped structures with three sides open, and a number of grooves are arranged on the inner side of each U-shaped structure. The two ends of the contact spring are not connected, and an independent contact spring is arranged in each groove. The contact spring and the base are clamped together by a fixing piece passing through the contact spring, and the contact springs in all the grooves do not interfere with each other.

10. A connector comprising a multi-contact high-current terminal assembly as claimed in any one of claims 1 to 9.

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