A multi-contact terminal assembly

Abstract

The present invention discloses a multi-contact terminal assembly, which includes a reed structure and a terminal body. The terminal body includes a reed structure installation part and a wire connection part. An installation cavity is formed in the reed structure installation part, and the reed structure is installed in the installation cavity of the reed structure installation part. The reed structure includes a reed support, and a plurality of current-carrying contact groups are arranged side by side on the reed support. Each current-carrying contact group is composed of two relatively arranged current-carrying contacts. An insertion space for the male terminal to be inserted is formed between the two relatively arranged current-carrying contacts. Moreover, between each current-carrying contact and the male terminal and between each current-carrying contact and the inner wall of the installation cavity of the reed structure installation part, a point-contact electrical connection structure is formed, so that multiple parallel current transmission paths are formed between the male terminal and the terminal body. Each current-carrying contact of the present invention cooperates with each other to form multiple parallel current transmission paths, which can effectively improve the current-carrying capacity of the terminal assembly to achieve large-current transmission.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical connectors, and particularly to a multi-contact terminal assembly. Background Art

[0002] In modern industrial electrical systems, electrical connectors are used more and more widely and in increasing numbers. There is an increasing demand for the current-carrying capacity of connectors. It is required that the terminal assembly can achieve a smaller volume under the same current-carrying condition, or improve the current-carrying capacity under the same volume condition, so as to meet the usage requirements of the connectors. For traditional electrical connector terminal assemblies, the terminal body is usually used as the elastic contact point, and at the same time, the connection with the cable needs to be considered. When higher current-carrying is required, without changing the material properties, only the volume of the terminal can be increased to achieve the goal of increasing the current-carrying capacity. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a multi-contact terminal assembly, which mainly solves the technical problem of the weak current-carrying capacity of existing electrical connectors.

[0004] To achieve the above object, the present invention is realized by the following technical solutions:

[0005] A multi-contact terminal assembly includes a reed structure and a terminal body. The terminal body includes a reed structure installation part and a wire connection part that are integrally connected. An installation cavity is formed in the reed structure installation part, and the reed structure is installed in the installation cavity of the reed structure installation part. The reed structure includes a reed bracket, and a plurality of current-carrying contact piece groups are arranged side by side on the reed bracket. Each current-carrying contact piece group is composed of two relatively arranged current-carrying contact pieces. A plugging space for the male terminal to be adaptively inserted is formed between the two relatively arranged current-carrying contact pieces. And a point-contact electrical connection structure is formed between each current-carrying contact piece and the male terminal, and between each current-carrying contact piece and the inner wall of the installation cavity of the reed structure installation part, so that multiple parallel current transmission paths are formed between the male terminal and the terminal body.

[0006] Further, the current-carrying contact piece includes a cantilever body. The front end of the cantilever body is connected to the reed bracket, the rear end of the cantilever body extends backward along the insertion direction of the male terminal, and a male terminal contact bump that can form a point-contact electrical connection with the male terminal and a cavity wall contact bump that can form a point-contact electrical connection with the inner wall of the installation cavity of the reed structure installation part are formed on the cantilever body.

[0007] Further, the front end of the cantilever body is fixedly connected to the front end position of the reed bracket, and the rear end of the cantilever body extends backward and bends along the insertion direction of the male terminal. A male terminal contact bump is formed by bending at a position near the middle of the cantilever body, and a cavity wall contact bump is formed at a position near the front end and / or the rear end of the cantilever body.

[0008] Further, the cantilever body has a C-shaped main body portion. The front end of the C-shaped main body portion is fixedly connected to the front end position of the reed bracket through an extension portion. And at the connection between the C-shaped main body portion and the extension portion, a cavity wall contact bump is formed by bending, which can be in point contact electrical connection with the inner wall of the installation cavity of the reed structure installation portion. At the middle concave portion of the C-shaped main body portion, a male terminal contact bump is formed by bending, which can be in point contact electrical connection with the male terminal. At the rear end of the C-shaped main body portion, a cavity wall contact bump is formed by bending, which can be in point contact electrical connection with the inner wall of the installation cavity of the reed structure installation portion. And in each set of current-carrying contact pieces, the two relatively arranged current-carrying contact pieces cooperate with each other and can generate an elastic clamping force on the male terminal inserted into the insertion space.

[0009] Further, five sets of current-carrying contact piece groups are arranged on the reed bracket of the reed structure. When the male terminal is inserted into the insertion space between each set of current-carrying contact piece groups, the five groups of a total of ten current-carrying contact pieces can cooperate with each other to form ten parallel current transmission paths.

[0010] Further, the wire connection portion includes a cable core wire crimping area and a cable insulation layer crimping area, and the cross-sections of the cable core wire crimping area and the cable insulation layer crimping area are U-shaped.

[0011] Further, the reed bracket includes a bracket main body portion. On both sides of the bracket main body portion, there is a symmetrically arranged claw respectively. And at the positions of the reed structure installation portion corresponding to the two claws, a matching clamping opening is respectively provided. The reed structure is detachably connected to the installation cavity of the reed structure installation portion through the snap-fit of the two claws and the two corresponding clamping openings.

[0012] Further, at the rear side position of the installation cavity of the reed structure installation portion, a limiting portion is provided which can form a limiting fit with the rear end of the bracket main body portion. And at the front end of the reed structure installation portion, an insertion port is formed. A plurality of grooves are provided at the insertion port. At the front end of the bracket main body portion, a plurality of flanging convexes respectively corresponding to the grooves are provided. When the reed structure is installed in place in the installation cavity of the reed structure installation portion, each flanging convex can be snap-fitted into the corresponding groove to form a secondary limiting structure.

[0013] Further, the reed structure installation portion includes a cavity shell that can enclose to form an installation cavity. A butterfly buckle and a riveting structure are provided on the cavity shell.

[0014] Further, an anti-misalignment post for marking the assembly direction is also provided on the cavity shell.

[0015] The above technical solutions have the following advantages or beneficial effects:

[0016] In the multi-contact terminal assembly of the present invention, a plurality of current-carrying contact groups are arranged side by side on the reed bracket, and each current-carrying contact group is composed of two oppositely arranged current-carrying contacts. When the male terminal is tightly inserted into the insertion space between the two current-carrying contacts in a fitting manner, the current-carrying contacts can electrically connect the terminal body and the male terminal together, and the current-carrying contacts cooperate with each other to form a plurality of parallel current transmission paths, increasing the number of contacts and building a plurality of current transmission paths in a limited space, and transmitting current simultaneously in a parallel manner, thereby effectively improving its current-carrying capacity and realizing the function of transmitting large current. At the same time, the connection between each current-carrying contact and the male terminal and between each current-carrying contact and the inner wall of the installation cavity of the reed structure installation part is configured to be electrically connected by a point contact electrical connection structure. Compared with the existing surface contact electrical connection structure, the point contact electrical connection structure has better contact controllability and is beneficial to improving the reliability of electrical connection. Brief Description of the Drawings

[0017] Figure 1 is a schematic three-dimensional structure diagram of an embodiment of the present invention.

[0018] Figure 2 is a structural sectional view of an embodiment of the present invention.

[0019] Figure 3 is a structural sectional view of another angle of an embodiment of the present invention.

[0020] Figure 4 is a schematic diagram of the current transmission path in the multi-contact terminal assembly of an embodiment of the present invention.

[0021] Figure 5 is a schematic structure diagram of the reed structure of an embodiment of the present invention.

[0022] Figure 6 is a schematic three-dimensional structure diagram of another angle of the reed structure of an embodiment of the present invention.

[0023] Figure 7 is a structural sectional view of the reed structure of an embodiment of the present invention.

[0024] Figure 8 is a schematic three-dimensional structure diagram of the terminal body of an embodiment of the present invention.

[0025] Figure 9 is a structural diagram of another angle of the terminal body of an embodiment of the present invention.

[0026] Reference Numeral Explanation:

[0027] 1. Reed structure, 2. Terminal body, 3. Male terminal, 11. Current-carrying contact piece, 12. Reed bracket, 21. Reed structure mounting part, 22. Wire connection part, 111. Cantilever body, 112. Chamber wall contact bump, 113. Male terminal contact bump, 121. Bracket main body part, 122. Claw, 123. Flanging clamping protrusion, 211. Insertion port, 212. Groove, 213. Chamber shell, 214. Limiting part, 215. Window, 216. Clamping opening, 217. Butterfly buckle, 218. Anti-misalignment post, 221. Cable core wire crimping area, 222. Cable insulation layer crimping area. Detailed implementation manner

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0030] Please refer to the appended Figure 1 to the appended Figure 9, an embodiment of the present invention provides a multi-contact terminal assembly, which includes a reed structure 1 and a terminal body 2. The terminal body 2 includes a reed structure mounting portion 21 and a wire connection portion 22 that are integrally connected. An installation cavity is formed in the reed structure mounting portion 21, and the reed structure 1 is installed in the installation cavity of the reed structure mounting portion 21. The reed structure 1 includes a reed bracket 12, and a plurality of current-carrying contact groups are arranged side by side on the reed bracket 12. Each current-carrying contact group is composed of two relatively arranged current-carrying contacts 11. A plugging space for the male terminal 3 to be adaptively inserted is formed between the two relatively arranged current-carrying contacts 11. And a point-contact electrical connection structure is provided between each current-carrying contact 11 and the male terminal 3, as well as between each current-carrying contact 11 and the inner wall of the installation cavity of the reed structure mounting portion 21, so that multiple parallel current transmission paths are formed between the male terminal 3 and the terminal body 2. It can be understood that in this embodiment, since a plurality of current-carrying contact groups are arranged side by side on the reed bracket 12, and each current-carrying contact group is composed of two relatively arranged current-carrying contacts 11. When the male terminal 3 is tightly and adaptively inserted into the plugging space between the two current-carrying contacts 11, the current-carrying contacts 11 can electrically connect the terminal body 2 and the male terminal 3 together, and each current-carrying contact 11 cooperates with each other to form multiple parallel current transmission paths, increasing the number of contacts and building multiple current transmission paths in a limited space, and transmitting current simultaneously in parallel, thereby effectively improving its current-carrying capacity and realizing the function of transmitting large current. At the same time, a point-contact electrical connection structure is configured between each current-carrying contact 11 and the male terminal 3, as well as between each current-carrying contact 11 and the inner wall of the installation cavity of the reed structure mounting portion 21. Compared with the existing surface-contact electrical connection structure, the point-contact electrical connection structure has better contact controllability, which is beneficial to improving the reliability of electrical connection.

[0031] Please refer to the attached Figure 1 to the attached Figure 9, in one preferred embodiment, the current-carrying contact piece 11 includes a cantilever body 111. The front end of the cantilever body 111 is connected to the reed bracket 12, and the rear end of the cantilever body 111 extends backward along the insertion direction of the male terminal 3. A male terminal contact bump 113 capable of forming a point-contact electrical connection with the male terminal 3 and a cavity wall contact bump 112 capable of forming a point-contact electrical connection with the inner wall of the installation cavity of the reed structure installation part 21 of the terminal body 2 are formed on the cantilever body 111. In one preferred embodiment, preferably, the front end of the cantilever body 111 is fixedly connected to the front end position of the reed bracket 12, and the rear end of the cantilever body 111 extends backward and bends along the insertion direction of the male terminal 3. A male terminal contact bump 113 is formed by bending at a position near the middle of the cantilever body 111, and a cavity wall contact bump 112 is formed at a position near the front end and / or rear end of the cantilever body 111. In this embodiment, preferably, the contact surfaces of the cavity wall contact bump 112 and the male terminal contact bump 113 are both spherical structures. In this embodiment, preferably, the cantilever body 111 has a C-shaped main body part. The front end of the C-shaped main body part is fixedly connected to the front end position of the reed bracket 12 through an extension part, and a cavity wall contact bump 112 capable of forming a point-contact electrical connection with the inner wall of the installation cavity of the reed structure installation part 21 is formed by bending at the connection position of the C-shaped main body part and the extension part. A male terminal contact bump 113 capable of forming a point-contact electrical connection with the male terminal 3 is formed by bending at the concave middle part of the C-shaped main body part. A cavity wall contact bump 112 capable of forming a point-contact electrical connection with the inner wall of the installation cavity of the reed structure installation part 21 is formed by bending at the rear end of the C-shaped main body part. And the two relatively arranged current-carrying contact pieces 11 in each current-carrying contact piece group cooperate with each other and can generate an elastic clamping force on the male terminal 3 inserted into the insertion space. It can be understood that in this embodiment, since each current-carrying contact piece 11 is a cantilever structure, and the front end of the current-carrying contact piece 11 is connected to the front end position of the reed bracket 12, while the rear end of the current-carrying contact piece 11 is movably arranged without fixed connection, and the two relatively arranged current-carrying contact pieces 11 in each current-carrying contact piece group cooperate with each other and can generate an elastic clamping force on the male terminal 3 inserted into the insertion space. Then, when the male terminal 3 is inserted into the insertion space, each current-carrying contact piece 11 can be extruded to generate elastic deformation, which is beneficial to reducing the insertion resistance of the male terminal 3. When the male terminal 3 needs to be pulled out, since the front end of the cantilever body 111 of each current-carrying contact piece 11 is fixedly connected and the rear end is suspended, and the middle is in contact with the male terminal 3 through the male terminal contact bump 113. Therefore, during the process of pulling out the male terminal 3, due to the frictional force at the contact point between the male terminal contact bump 113 and the male terminal 3, each cantilever body 111 has a tendency to move inward and close, which can, to a certain extent, increase the pulling-out resistance of the male terminal 3. Therefore, it is beneficial to improve the contact reliability and anti-vibration performance of the terminal assembly.In addition, in this embodiment, since a cavity wall contact bump 112 is formed at a position near the front end and a position near the rear end of the cantilever body 111 respectively, and at the same time, a male terminal contact bump 113 is formed at a position near the middle of the cantilever body 111, during use, the middle part of the cantilever body 111 is in contact with the male terminal 3 through the male terminal contact bump 113. Then, the current will be divided into two paths in the middle of the cantilever body 111 and flow towards both ends of the cantilever body 111 respectively and finally converge on the reed structure mounting part 21 of the terminal body 2. On the one hand, the two cavity wall contact bumps 112 provided on the cantilever body 111 are beneficial to reducing the probability of virtual connection between the cantilever body 111 and the reed structure mounting part 21, thereby improving the contact reliability between the cantilever body 111 and the reed structure mounting part 21. On the other hand, since the current is divided into two paths in the middle of the cantilever body 111 and flows towards both ends of the cantilever body 111 respectively and finally converges on the reed structure mounting part 21, the two paths of current are transmitted simultaneously in a single cantilever body 111, which can effectively shorten the transmission path length of the current from the male terminal 3 to the reed structure mounting part 21 and is beneficial to reducing the contact resistance to improve the current-carrying capacity.

[0032] Please refer to the attached Figure 6 , in one preferred embodiment, five pairs of current-carrying contact piece groups are provided on the reed support 12 of the reed structure 1. When the male terminal 3 is inserted into the insertion space between each current-carrying contact piece group, ten current-carrying contact pieces 11 in five groups can cooperate with each other to form ten parallel current transmission paths. However, those skilled in the art should understand that in other embodiments, the number of current-carrying contact pieces 11 on the reed support 12 is not limited to the specific implementation disclosed in this embodiment, and can also be other numbers. Those skilled in the art can design the number of current-carrying contact pieces 11 according to the specific current-carrying requirements and the size of the installation space.

[0033] Please refer to the attached Figure 8 , in one preferred embodiment, the wire connection part 22 includes a cable core wire crimping area 221 and a cable insulation layer crimping area 222. The cross-sections of the cable core wire crimping area 221 and the cable insulation layer crimping area 222 are U-shaped, which is beneficial to improving the efficiency of the crimping process and the control of the crimping quality. Preferably, a plurality of grooves are provided in the cable core wire crimping area 221 to ensure the reliability of the core wire crimping.

[0034] Please refer to the attached Figure 1 , attached Figure 6, in a preferred embodiment, the reed bracket 12 includes a bracket main body 121. On both sides of the bracket main body 121, there is a symmetrically arranged claw 122 respectively. And at the positions of the reed structure installation part 21 corresponding to the two claws 122, there is respectively an adapted clamping opening 216. The reed structure 1 is detachably connected to the installation cavity of the reed structure installation part 21 through the snap-fit of the two claws 122 and the two corresponding clamping openings 216. However, those skilled in the art should understand that in other embodiments, the bracket main body 121 of the reed bracket 12 can also be connected to the installation cavity of the reed structure installation part 21 through other detachable connection structures, and is not limited to the specific implementation manner disclosed in this embodiment.

[0035] Please refer to the attached Figure 1 , the attached Figure 2 , the attached Figure 6 , the attached Figure 8 , in a preferred embodiment, a limiting part 214 capable of forming a limiting fit with the rear end of the bracket main body 121 is arranged at the rear position of the installation cavity of the reed structure installation part 21. And a fitting port 211 is formed at the front end of the reed structure installation part 21. A plurality of grooves 212 are opened at the fitting port 211. At the front end of the bracket main body 121, there are a plurality of flanging convexes 123 respectively corresponding to the grooves 212. When the reed structure 1 is installed in place in the installation cavity of the reed structure installation part 21, each flanging convex 123 can be snap-fitted into the corresponding groove 212 to form a secondary limiting structure. After assembly, the front side of the flanging convex 123 is flush with the end face of the fitting port 211.

[0036] Please refer to the attached Figure 1 , the attached Figure 8 , in a preferred embodiment, the reed structure installation part 21 includes a cavity shell 213 capable of surrounding to form an installation cavity. A butterfly buckle 217 and a riveting structure are arranged on the cavity shell 213. Preferably, an anti-misassembly post 218 for marking the assembly direction is also arranged on the cavity shell 213 to prevent the terminal assembly from being not assembled in place or having a pin withdrawal phenomenon due to incorrect assembly direction during the assembly process. In addition, a window 215 is arranged at the back position of the cavity shell 213.

[0037] In addition, both the reed structure 1 and the terminal body 2 can be made of copper alloy strip by stamping process and then assembled into an embodiment of the present invention, so that these two parts can select different materials according to the needs of functions and performances, thus eliminating the need to make concessions in their respective performances due to the need to balance the elasticity of the contact point and the strength of the crimping part. The overall structure of the above multi-contact terminal assembly can effectively ensure the current transmission ability of the terminal assembly at the contact point and the strength and performance of the terminal assembly at the connection with the cable.

[0038] As described above, the embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Therefore, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Claims

1. A multi-contact terminal assembly, characterized in that: It includes a reed structure (1) and a terminal body (2). The terminal body (2) includes a reed structure mounting portion (21) and a wire connection portion (22) which are integrally connected. An installation cavity is formed in the reed structure mounting portion (21). The reed structure (1) is installed in the installation cavity of the reed structure mounting portion (21). The reed structure (1) includes a reed bracket (12). A plurality of current-carrying contact piece groups are arranged side by side on the reed bracket (12). Each current-carrying contact piece group is composed of two oppositely arranged current-carrying contact pieces (11). An insertion space for the male terminal (3) to be adaptively inserted is formed between the two opposite current-carrying contact pieces (11). And a point-contact electrical connection structure is formed between each current-carrying contact piece (11) and the male terminal (3) and between each current-carrying contact piece (11) and the inner wall of the installation cavity of the reed structure mounting portion (21), so that multiple parallel current transmission paths are formed between the male terminal (3) and the terminal body (2).

2. The multi-contact terminal assembly according to claim 1, wherein: The current-carrying contact piece (11) includes a cantilever body (111). The front end of the cantilever body (111) is connected to the reed bracket (12). The rear end of the cantilever body (111) extends backward along the insertion direction of the male terminal (3). And a male terminal contact bump (113) capable of forming a point-contact electrical connection with the male terminal (3) and a cavity wall contact bump (112) capable of forming a point-contact electrical connection with the inner wall of the installation cavity of the reed structure mounting portion (21) are formed on the cantilever body (111).

3. The multi-contact terminal assembly according to claim 2, wherein: The front end of the cantilever body (111) is fixedly connected to the front end position of the reed bracket (12). And the rear end of the cantilever body (111) bends and extends backward along the insertion direction of the male terminal (3). A male terminal contact bump (113) is formed by bending at a position near the middle of the cantilever body (111). And cavity wall contact bumps (112) are formed at positions near the front end and / or the rear end of the cantilever body (111).

4. The multi-contact terminal assembly according to claim 3, wherein: The cantilever body (111) has a C-shaped main body portion. The front end of the C-shaped main body portion is fixedly connected to the front end position of the reed bracket (12) through an extension portion. And a cavity wall contact bump (112) capable of forming a point-contact electrical connection with the inner wall of the installation cavity of the reed structure mounting portion (21) is formed by bending at the connection position of the C-shaped main body portion and the extension portion. A male terminal contact bump (113) capable of forming a point-contact electrical connection with the male terminal (3) is formed by bending at the concave middle of the C-shaped main body portion. A cavity wall contact bump (112) capable of forming a point-contact electrical connection with the inner wall of the installation cavity of the reed structure mounting portion (21) is formed by bending at the rear end of the C-shaped main body portion. And the two oppositely arranged current-carrying contact pieces (11) in each current-carrying contact piece group cooperate with each other and can generate an elastic clamping force on the male terminal (3) inserted into the insertion space.

5. The multi-contact terminal assembly according to claim 4, wherein: Five pairs of current-carrying contact piece groups are arranged on the reed bracket (12) of the reed structure (1). When the male terminal (3) is adaptively inserted into the insertion space between each current-carrying contact piece group, ten current-carrying contact pieces (11) in five groups can cooperate with each other to form ten parallel current transmission paths.

6. The multi-contact terminal assembly according to any one of claims 1 to 5, characterized in that: The wire connection part (22) includes a cable core wire crimping area (221) and a cable insulation layer crimping area (222), and the cross-sections of the cable core wire crimping area (221) and the cable insulation layer crimping area (222) are U-shaped.

7. The multi-contact terminal assembly according to any one of claims 1 to 5, characterized in that: The reed bracket (12) includes a bracket main body part (121), and a pair of symmetrically arranged claws (122) are provided on both sides of the bracket main body part (121). At positions of the reed structure installation part (21) corresponding to the two claws (122), a pair of adapted clamping openings (216) are respectively formed. The reed structure (1) is detachably connected to the installation cavity of the reed structure installation part (21) through the snap-fit of the two claws (122) and the two corresponding clamping openings (216).

8. The multi-contact terminal assembly according to claim 7, wherein: At the rear side position of the installation cavity of the reed structure installation part (21), a limiting part (214) capable of forming a limiting fit with the rear end of the bracket main body part (121) is provided. At the front end of the reed structure installation part (21), an insertion port (211) is formed, and a plurality of grooves (212) are formed at the insertion port (211). At the front end of the bracket main body part (121), a plurality of flanging protrusions (123) respectively corresponding to the grooves (212) are provided. When the reed structure (1) is installed in place in the installation cavity of the reed structure installation part (21), each flanging protrusion (123) can be adaptively snapped into each corresponding groove (212) to form a secondary limiting structure.

9. The multi-contact terminal assembly according to any one of claims 1 to 5, characterized in that: The reed structure installation part (21) includes a cavity shell (213) capable of surrounding to form an installation cavity, and a butterfly buckle (217) and a riveting structure are provided on the cavity shell (213).

10. The multi-contact terminal assembly according to claim 9, wherein: An anti-misassembly post (218) for marking the assembly direction is also provided on the cavity shell (213).

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