Socket terminal and connecting assembly

Abstract

The utility model relates to the technical field of connectors, in particular to a socket terminal and a connecting assembly, the socket terminal is arranged in a socket connector so as to be in butt joint and conductive connection with a plug terminal of a plug connector, the end portion of the plug terminal is provided with external threads, the socket terminal comprises a socket terminal body and a connecting piece, and the connecting piece is arranged on the socket terminal body. An inner hole extending in the axial direction is formed in the socket terminal body, a connecting piece with the hardness larger than that of the terminal body is fixedly installed in the inner hole, a first inner threaded hole is formed in the end, facing the plug terminal, of the connecting piece, and the outer threads are in threaded connection with the first inner threaded hole so as to fix and electrically connect the socket terminal and the plug terminal. The connecting assembly comprises a plug connector and a socket connector, and the socket terminal is arranged in the socket connector. According to the utility model, the problems of deformation of the socket terminal body, infirm connection and the like caused by direct screw joint of the socket terminal body made of a softer material and the plug terminal can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, and more specifically, to a socket terminal and a connection assembly. Background Art

[0002] Some existing high-voltage and high-current connectors use the method of end-face contact of terminals to meet the transmission of larger currents. That is, the plug connector is provided with columnar or row-shaped plug terminals, the socket connector is provided with columnar socket terminals, and the conductive contact surface of the socket terminal is provided with an internal threaded hole to be screwed with the plug terminal. The conductive contact surfaces of the plug terminal and the socket terminal are in contact with each other to achieve power transmission. The socket terminal is like the conductive connection column 7 disclosed in the Chinese patent document with the application number 202220038901.X and the name of the two-hole super-fast charging connector socket, and the power terminal 25 disclosed in the Chinese patent document with the application number 202122329916.X and the name of a 90° outgoing large-current connector.

[0003] However, for the above-mentioned socket terminals, since they are integrally made of copper / copper alloy materials, the product cost is at a relatively high level. And the commonly used pure copper material is relatively soft, and the internal thread is easily deformed during screw connection, resulting in insecure connection. While the antimony copper alloy with relatively hard texture has a high price, and using antimony copper alloy will further increase the product cost. Summary of the Utility Model

[0004] The utility model provides a socket terminal to solve the problems of easy deformation and insecure connection of the existing socket terminals. At the same time, a connection assembly including the above socket terminal is also provided.

[0005] A socket terminal provided by the utility model is arranged in a socket connector to be docked and conductively connected with a plug terminal of a plug connector. An external thread is provided at the end of the plug terminal. The socket terminal includes a socket terminal body and a connecting member. An inner hole extending axially is provided in the socket terminal body. A connecting member with a hardness greater than that of the terminal body is fixedly installed in the inner hole. And a first internal threaded hole is provided at one end of the connecting member facing the plug terminal. The external thread is screwed with the first internal threaded hole to fixedly connect and electrically connect the socket terminal and the plug terminal.

[0006] Optionally, the connecting member includes a docking part and a fixing part connected in sequence axially. The first internal threaded hole is provided on the end face of the free end of the docking part. A riveting part is provided on the outer peripheral surface of the fixing part. A plurality of axially extending riveting teeth are provided on the outer peripheral wall of the riveting part. The inner hole includes a first inner hole for accommodating the docking part and a second inner hole for fixing the fixing part. The first inner hole and the second inner hole are communicated with each other and coaxially arranged. The connecting member is press-riveted and connected in the second inner hole through the riveting part.

[0007] Optionally, the diameter of the first inner hole is larger than the diameter of the second inner hole to form a step structure at the connection between the first inner hole and the second inner hole. A positioning portion is also provided at one end of the docking portion close to the riveting portion. When the connecting piece is installed in the inner hole, the positioning portion is located in the first inner hole and cooperates with the step structure to stop.

[0008] Optionally, the positioning portion and the riveted portion are both circumferential annular protrusion structures integrally arranged with the connecting piece, and the outer diameter of the positioning portion is larger than the outer diameter of the riveted portion, an anti-rotation plane is provided on the outer peripheral wall of the positioning portion, and an anti-rotation protrusion is provided at the position of the first inner hole corresponding to the anti-rotation plane, and the anti-rotation protrusion cooperates with the anti-rotation plane to prevent the connecting piece and the socket terminal body from rotating relative to each other.

[0009] Optionally, the free end of the docking portion extends out of the inner hole, and a socket anti-touch piece is sleeved on the outer circumference of the docking portion except the positioning portion.

[0010] Optionally, a circumferentially protruding anti-slip boss is further provided on the outer circumferential surface of the docking portion, and an anti-slip groove that cooperates and engages with the anti-slip boss is provided on the inner circumferential wall of the socket anti-touch member.

[0011] The utility model provides a connection assembly, including a plug connector and a socket connector adapted for connection, the plug connector including a plug housing and a plug terminal arranged in the plug housing, the socket connector including a socket housing and the socket terminal as described above arranged in the socket housing, the plug terminal including a plug terminal body and a screw, the plug terminal body is provided with a receiving hole corresponding to the inner hole, and a through hole coaxial with and connected to the receiving hole, a screw is rotatably installed in the through hole, after the plug connector is plug-connected with the socket connector, the external thread of the screw is screwed with the first internal threaded hole, so that the end face of the socket terminal body abuts against the end face of the plug terminal body and is conductively connected.

[0012] Optionally, an injection hole radially connected to the inner hole is provided on the outer peripheral surface of the socket terminal body, and the socket housing and the socket anti-touch component are connected to each other through the injection hole and are integrally injection molded.

[0013] Optionally, a plug-proofing member with a cylindrical structure is provided on the inner wall of the accommodating hole, and one end of the plug-proofing member facing the socket terminal extends out of the accommodating hole.

[0014] Optionally, there is a gap between the outer circumferential surface of the socket anti-touch member and the first inner hole, and after the plug terminal is screwed with the socket terminal, the plug anti-touch member is installed on the outer circumference of the socket anti-touch member and partially enters the gap.

[0015] The socket terminal and the connection assembly of the utility model have the following beneficial effects:

[0016] 1. The socket terminal includes a socket terminal body and a connecting member. By screwing the connecting member, which is made of a relatively hard material, to the plug terminal, it can effectively avoid problems such as deformation of the socket terminal body and loose connection caused by directly screwing the socket terminal body, which is made of a relatively soft material, to the plug terminal in the traditional technology.

[0017] 2. The connecting member with a lower material cost in the socket terminal can replace part of the material of the socket terminal body, thereby saving the material for manufacturing the socket terminal body with a higher cost and reducing the manufacturing cost of the socket terminal.

[0018] Other features and advantages of the present utility model will become clear through the following detailed description of the exemplary embodiments of the present utility model with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings incorporated in and constituting a part of this specification illustrate embodiments of the present utility model and, together with the description, are used to explain the principles of the present utility model.

[0020] Figure 1 is a schematic structural diagram of the socket terminal;

[0021] Figure 2 is a schematic cross-sectional view of the socket terminal body;

[0022] Figure 3 is a schematic installation relationship diagram of the connecting member and the socket terminal body;

[0023] Figure 4 is a schematic structural diagram of the connection assembly;

[0024] Figure 5 is a partial cross-sectional view of the plug connector;

[0025] Figure 6 is a schematic structural diagram of the socket connector;

[0026] Figure 7 is a partial cross-sectional view of the plug connector and the socket connector after connection.

[0027] The labels in the drawings are as follows:

[0028] 1. Socket terminal; 11. Socket terminal body; 111. Anti-rotation projection; 112. Inner hole; 1121. First inner hole; 1122. Second inner hole; 1123. Step structure; 113. Injection hole; 12. Connecting member; 121. Docking part; 1211. First internal thread hole; 1212. Anti-disengagement boss; 1213. Positioning part; 1214. Anti-rotation plane; 122. Fixing part; 1221. Riveting part; 1222. Second internal thread hole; 13. Socket anti-touch member; 131. Anti-disengagement groove; 14. Gap;

[0029] 2. Socket connector; 21. Socket housing;

[0030] 3. Plug connector; 31. Plug housing; 32. Plug terminal body; 321. Accommodating hole; 322. Through hole; 33. Screw; 34. Plug anti-touch member. Detailed implementation mode

[0031] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements, numerical expressions and values of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0032] The following description of at least one exemplary embodiment is actually merely illustrative and in no way restricts the present invention or its application or use.

[0033] Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods and devices should be regarded as part of the specification.

[0034] In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0035] As Figures 1-3 shown and in combination with Figures 4-7 , an embodiment of the present invention provides a socket terminal 1, which is arranged in the socket connector 2 to be docked and conductively connected with the plug terminal of the plug connector 3. The end of the plug terminal is provided with an external thread. Specifically, the socket terminal 1 includes a socket terminal body 11 and a connecting member 12. An inner hole 112 extending axially is provided in the socket terminal body 11. A connecting member 12 with a hardness greater than that of the terminal body is fixedly installed in the inner hole 112. And a first internal thread hole 1211 is provided at one end of the connecting member 12 facing the plug terminal. The external thread is screwed with the first internal thread hole 1211 to fix and electrically connect the socket terminal 1 and the plug terminal.

[0036] The above socket terminal 1 is screwed with the plug terminal through the connecting member 12 with a harder material, which can effectively avoid problems such as deformation of the socket terminal body 11 and insecure connection caused by directly screwing the socket terminal body 11 with a softer material to the plug terminal in the traditional technology.

[0037] Further, in order to ensure the reliable connection between the socket terminal body 11 and the connecting member 12, in this embodiment, the connecting member 12 includes a butt joint portion 121 and a fixing portion 122 that are axially connected in sequence. The butt joint portion 121 is close to the plug terminal, and the fixing portion 122 is far from the plug terminal. The first internal threaded hole 1211 is provided on the end surface of the free end of the butt joint portion 121. The second internal threaded hole 1222 for bolt-connecting the corresponding cable is provided on the end surface of the fixing portion 122 far from the plug terminal. A riveting portion 1221 is provided on the outer peripheral surface of the fixing portion 122. A plurality of axially extending riveting teeth are provided on the outer peripheral wall of the riveting portion 1221. The inner hole 112 includes a first inner hole 1121 for receiving the butt joint portion 121 and a second inner hole 1122 for fixing the fixing portion 122. The first inner hole 1121 and the second inner hole 1122 are communicated with each other and coaxially arranged. The connecting member 12 is press-riveted and connected in the second inner hole 1122 through the riveting portion 1221.

[0038] Further, in order to position the connecting member 12 when the connecting member 12 is installed in the socket terminal body 11, in this embodiment, the diameter of the first inner hole 1121 is larger than the diameter of the second inner hole 1122, so as to form a stepped structure 1123 at the connection between the first inner hole 1121 and the second inner hole 1122. A positioning portion 1213 is further provided at one end of the butt joint portion 121 close to the riveting portion 1221. When the connecting member 12 is installed in the inner hole 112 from the direction where the first inner hole 1121 is located, the positioning portion 1213 is located in the first inner hole 1121 and is in a blocking fit with the stepped structure 1123.

[0039] Further, in order to prevent the connecting member 12 from rotating in the inner hole 112, in this embodiment, both the positioning portion 1213 and the riveting portion 1221 are circumferentially annular convex structures integrally provided with the connecting member 12, and the outer diameter of the positioning portion 1213 is larger than the outer diameter of the riveting portion 1221. An anti-rotation plane 1214 is provided on the outer peripheral wall of the positioning portion 1213. An anti-rotation protrusion 111 is provided at the position of the first inner hole 1121 corresponding to the anti-rotation plane 1214. The anti-rotation protrusion 111 and the anti-rotation plane 1214 are in an anti-rotation fit to prevent the connecting member 12 and the socket terminal body 11 from rotating relative to each other.

[0040] In other embodiments other than this embodiment, the positions of the above-mentioned positioning portion and riveting portion can be exchanged. At this time, the diameter of the first inner hole is smaller than the diameter of the second inner hole. The positioning portion is located in the second inner hole. The corresponding anti-rotation protrusion is provided on the inner wall of the second inner hole. The riveting portion is press-riveted and connected to one end of the first inner hole close to the second inner hole. During actual assembly, the connecting member is installed in the inner hole from the direction where the second inner hole is located.

[0041] Further, in order to meet the anti-touch requirement of the socket terminal 1, in this embodiment, the free end of the docking portion 121 extends out of the inner hole 112, and a socket anti-touch member 13 is sleeved on the outer peripheral surface of the docking portion 121 except for the positioning portion 1213.

[0042] Further, in order to prevent the socket anti-touch member 13 from axially disengaging from the docking portion 121, in this embodiment, an anti-disengagement boss 1212 with a circumferential protrusion is further provided on the outer peripheral surface of the docking portion 121, and an anti-disengagement groove 131 that cooperates with and is snap-fitted to the anti-disengagement boss 1212 is provided on the inner peripheral wall of the socket anti-touch member 13.

[0043] In this embodiment, considering the manufacturing and assembly relationship with the socket housing 21, for the convenience of molding and to avoid the need for re-assembling the socket anti-touch member, an injection hole 113 for a first inner hole 1121 that radially communicates with the inner hole 112 is provided on the outer peripheral surface of the socket terminal body 11. The socket housing 21 and the socket anti-touch member 13 are communicated through the injection hole 113 and integrally injection-molded.

[0044] Of course, in other embodiments other than this embodiment, the injection hole may not be provided on the socket terminal body. At this time, the socket anti-touch member can be axially sleeved on the docking portion, or can also be injection-molded onto the outer peripheral surface of the docking portion by an injection method. The above methods are all easily achievable by the prior art.

[0045] In this embodiment, the socket terminal body 11 is made of copper / copper alloy, preferably purple copper material, and the connecting member 12 is made of iron / iron alloy, preferably steel material. Thus, while avoiding deformation of the socket terminal body 11 and using the harder connecting member 12 to ensure firm connection, the connecting member 12 with a lower material cost in the socket terminal 1 replaces part of the material of the socket terminal body 11, which can save the purple copper material for manufacturing the socket terminal body 11 with a higher cost, and thus reduces the manufacturing cost of the socket terminal 1.

[0046] See Figures 4-7 and in combination with Figures 1-3 , an embodiment of the present utility model further provides a connection assembly, including a plug connector 3 and a socket connector 2 that are adaptively connected. The plug connector 3 includes a plug housing 31 and a plug terminal provided in the plug housing 31, and the socket connector 2 includes a socket housing 21 and a socket terminal 1 as described in the above embodiment provided in the socket housing 21.

[0047] Specifically, the plug terminal includes a plug terminal body 32 and a screw 33. The plug terminal body 32 is provided with a receiving hole 321 corresponding to the inner hole 112, and a through hole 322 coaxial with and communicating with the receiving hole 321. The screw 33 is inserted through the through hole 322 and can rotate. After the plug connector 3 is inserted and connected to the socket connector 2, the docking portion 121 of the connecting member 12 in the socket terminal 1 and the socket anti-touch member 13, the part extending out of the socket terminal body 11 enter the receiving hole 321, and are screwed with the first internal thread hole 1211 through the external thread of the screw 33, so as to realize the abutting and conductive connection between the end face of the socket terminal body 11 and the end face of the plug terminal body 32, and the fixed connection between the socket terminal 1 and the plug terminal.

[0048] Furthermore, the socket housing 21 is injection-molded. In order to reduce the assembly process and avoid the need to reassemble the socket anti-touch member 13, in this embodiment, as mentioned in the embodiment of the socket terminal 1 above, an injection hole 113 radially communicating with the inner hole 112 and the first inner hole 1121 is provided on the outer peripheral surface of the socket terminal body 11. The socket housing 21 and the socket anti-touch member 13 are communicated through the injection hole 113 and integrally injection-molded. The socket anti-touch member 13 and a part of the socket housing 21 on the outer periphery of the socket terminal 1 cooperate to jointly achieve the purpose of preventing the socket terminal 1 from being touched.

[0049] Furthermore, in order to meet the anti-touch requirement of the plug terminal, in this embodiment, a plug anti-touch member 34 in the shape of a cylindrical structure is provided on the inner wall of the receiving hole 321. One end of the plug anti-touch member 34 facing the socket terminal 1 extends out of the receiving hole 321. The plug anti-touch member 34 and a part of the plug housing 31 on the outer periphery of the plug terminal cooperate to jointly achieve the purpose of preventing the plug terminal from being touched.

[0050] More specifically, there is a gap 14 between the outer peripheral surface of the socket anti-touch member 13 and the first inner hole 1121. After the plug terminal and the socket terminal 1 are screwed together, the plug anti-touch member 34 is inserted through the outer periphery of the socket anti-touch member 13 and partially enters the above-mentioned gap 14.

[0051] In this embodiment, the plug anti-touch member 34 is separately inserted into the receiving hole 321. In other embodiments other than this embodiment, the plug anti-touch member can also be injection-molded into the receiving hole. Further, referring to the socket terminal, an injection hole radially communicating with the receiving hole is also provided on the plug terminal body, so that the plug housing and the plug anti-touch member are communicated through the injection hole and integrally injection-molded.

[0052] Although some specific embodiments of the present utility model have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for the purpose of illustration and not for the purpose of limiting the scope of the present utility model. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present utility model. The scope of the present utility model is defined by the appended claims.

Claims

1. A socket terminal, arranged in a socket connector to be butted against and conductively connected to a plug terminal of a plug connector, wherein an end of the plug terminal is provided with an external thread, characterized in that: It includes a socket terminal body and a connecting piece, wherein the socket terminal body is provided with an inner hole extending along the axial direction, a connecting piece with a hardness greater than that of the terminal body is fixedly installed in the inner hole, and a first internal threaded hole is provided at one end of the connecting piece facing the plug terminal, and the external thread is screwed with the first internal threaded hole to fix and electrically connect the socket terminal and the plug terminal.

2. A socket terminal according to claim 1, characterized in that: The connecting piece includes a docking portion and a fixing portion which are axially connected in sequence, the first internal threaded hole is arranged on the end surface of the free end of the docking portion, a riveting portion is arranged on the outer peripheral surface of the fixing portion, and a plurality of riveting teeth extending axially are arranged on the outer peripheral wall of the riveting portion, the inner hole includes a first inner hole for accommodating the docking portion and a second inner hole for fixing the fixing portion, the first inner hole and the second inner hole are interconnected and coaxially arranged, and the connecting piece is riveted into the second inner hole by the riveting portion.

3. A socket terminal as claimed in claim 2, characterized in that: The diameter of the first inner hole is larger than the diameter of the second inner hole to form a step structure at the connection between the first inner hole and the second inner hole. A positioning portion is also provided at one end of the docking portion close to the riveting portion. When the connecting piece is installed in the inner hole, the positioning portion is located in the first inner hole and cooperates with the step structure to stop.

4. A socket terminal as claimed in claim 3, characterized in that: The positioning portion and the riveting portion are both circumferential annular protrusion structures integrally arranged with the connecting piece, and the outer diameter of the positioning portion is larger than the outer diameter of the riveting portion. An anti-rotation plane is provided on the outer peripheral wall of the positioning portion, and an anti-rotation protrusion is provided at a position of the first inner hole corresponding to the anti-rotation plane. The anti-rotation protrusion cooperates with the anti-rotation plane to prevent the connecting piece and the socket terminal body from rotating relative to each other.

5. A socket terminal as claimed in claim 3, characterized in that: The free end of the docking portion extends out of the inner hole, and a socket anti-touch piece is sleeved on the outer circumference of the docking portion except the positioning portion.

6. A socket terminal as claimed in claim 5, characterized in that: A circumferentially protruding anti-dropout boss is also provided on the outer circumferential surface of the docking portion, and an anti-dropout groove that cooperates and engages with the anti-dropout boss is provided on the inner circumferential wall of the socket anti-touch member.

7. A connection assembly, comprising a plug connector and a socket connector adapted to be connected, the plug connector comprising a plug housing and a plug terminal disposed in the plug housing, the socket connector comprising a socket housing and a socket terminal as claimed in any one of claims 1 to 6 disposed in the socket housing, characterized in that: The plug terminal includes a plug terminal body and a screw. The plug terminal body is provided with a receiving hole corresponding to the inner hole, and a through hole coaxial with and connected to the receiving hole. The through hole is rotatably installed with a screw. After the plug connector is plugged and connected to the socket connector, the external thread of the screw is screwed with the first internal threaded hole, so that the end face of the socket terminal body abuts against the end face of the plug terminal body and is conductively connected.

8. A connection assembly according to claim 7, characterized in that: The outer peripheral surface of the socket terminal body is provided with an injection hole radially connected to the inner hole, and the socket housing and the socket anti-touch component are connected through the injection hole and are integrally injection-molded.

9. A connection assembly according to claim 7, characterized in that: A plug anti-touch member with a cylindrical structure is arranged on the inner wall of the receiving hole, and one end of the plug anti-touch member facing the socket terminal extends out of the receiving hole.

10. A connection assembly according to claim 9, characterized in that: The connecting piece includes a docking portion and a fixing portion which are axially connected in sequence, a riveting portion is provided on the outer circumferential surface of the fixing portion, a positioning portion is further provided on one end of the docking portion close to the riveting portion, a socket anti-touch piece is sleeved on the outer circumferential surface of the docking portion except the positioning portion, the inner hole includes a first inner hole for accommodating the docking portion, a gap is provided between the outer circumferential surface of the socket anti-touch piece and the first inner hole, and after the plug terminal is screwed to the socket terminal, the plug anti-touch piece is installed on the outer circumference of the socket anti-touch piece and partially enters the gap.

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