Board end composite terminal connector

Abstract

The invention relates to a board end composite terminal connector which comprises a needle-shaped plug connector, a shell and a connector shell. The connector shell is provided with a plug interface for accommodating the shell and the needle-shaped plug connector, and a limiting piece is arranged in the plug interface; the shell comprises a first mounting part and a second mounting part which are in limiting connection; the needle-shaped plug connector comprises a first connecting part and a second connecting part, the second connecting part is of a fisheye-shaped structure, and the first connecting part is connected into the second mounting part. According to the composite terminal, the split type shell and the fisheye-shaped structure of the plug connector are adopted, and compared with an existing integrally-formed composite terminal shell with a square needle and a wire riveting structure, a complex mold does not need to be designed, high-precision forming equipment does not need to be used, and wire riveting operation of the shell and the cable does not need to be carried out, so that the terminal is simple in overall structure, rapid to install and high in material utilization rate; the manufacturing cost is obviously reduced; meanwhile, the split type shell is more flexible in later maintenance, corresponding parts can be independently replaced when the shell is locally damaged, the whole shell does not need to be replaced, and therefore the maintenance cost is effectively reduced.

Description

Technical Field

[0001] This invention relates to a board-end composite terminal connector, belonging to the field of connector technology. Background Technology

[0002] Invention patent authorization announcement number CN106816738 discloses an existing composite terminal that uses a single metal sheet to integrally stamp and bend the insertion point, housing, and riveting structure. This design is difficult to manufacture, requires significant equipment investment, and has extremely high manufacturing and maintenance costs, thus necessitating improvement. Furthermore, in practical applications, the terminal needs to possess both good electrical connection performance and meet the mechanical fixing requirements with the connector housing; however, due to the compact structure and space constraints of the terminal, the electrical connection and mechanical fixing parts are prone to insufficient assembly stability or loosening.

[0003] In addition, the housing structure of traditional terminals is prone to reverse insertion or skewed insertion during assembly, which affects assembly accuracy and reliability. Furthermore, the existing mating methods between terminals and connector housings mostly rely on snap-fit ​​or interference fit for fixation. When the force direction of the locking structure is inconsistent with the insertion and removal direction, it can easily lead to loosening or detachment of the fit. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a board-end composite terminal connector to solve the problems of: high manufacturing difficulty, large equipment investment, high manufacturing and maintenance costs, easy error in assembly direction, and weak fit with the connector's plastic shell.

[0005] To solve the above-mentioned technical problems, the present invention is implemented using the following technical solution: This invention provides a board-end composite terminal connector, comprising: A pin-shaped connector, comprising a first connecting portion and a second connecting portion, wherein the first connecting portion and the second connecting portion are used for connection in different ways, and the second connecting portion is disposed at the end of the first connecting portion; A housing for fixing a pin-shaped connector, comprising a first mounting portion and a second mounting portion that forms a limiting connection with the first mounting portion along a first insertion direction; A connector housing, one side of which is provided with an insertion interface for accommodating the housing and the pin-shaped plug; the insertion interface is provided with a limiting member, which is configured to limit the connection with a first mounting part when the housing and the pin-shaped plug are inserted into the insertion interface along a first insertion direction; The second connecting part is configured as a fisheye-shaped structure; the first connecting part is provided with a covered area, and the first connecting part is connected to the second mounting part through the covered area along the first insertion direction; The first mounting part has an asymmetrical structure in a cross section perpendicular to the first insertion direction; The surface of the first mounting part is provided with a limiting groove for the exposed covered area, and the limiting groove forms a limiting connection with the limiting member; The limiting member is provided with a pressing part for guiding and pressing the first mounting part, the pressing part extending obliquely toward the inlet direction of the insertion interface.

[0006] Furthermore, the first connecting portion is laser welded to the second mounting portion of the housing via the covered area; The second connecting part is configured for insertion.

[0007] Furthermore, the pin-shaped connector is also provided with an isolation block, and the second connecting part is connected to the first connecting part through the isolation block.

[0008] Furthermore, the limiting member also includes a snap-fit ​​part and a deformation part. When the whole formed by the housing and the needle-shaped connector is inserted into the connector along the first insertion direction, the deformation part is deformed by the squeezing part, and the snap-fit ​​part is connected to the limiting groove for limiting. The end of the snap-fit ​​part is a wedge-shaped structure for easy disassembly.

[0009] Furthermore, the second mounting part is provided with a first bending member and a second bending member within the vertical range covered by the covered area; the first bending member and the second bending member bend in opposite directions; A welding gap is provided between the first bent component and the second bent component, and both are in contact with the surface of the first connecting part.

[0010] Furthermore, the second mounting part is provided with a guide member bent in opposite directions at one end adjacent to the first bending member and the second bending member. The guide member guides the second mounting part to be inserted into the first mounting part and plays a coarse positioning role for the pin-shaped connector.

[0011] Furthermore, one end of the first mounting part is provided with a third bent component and a fourth bent component, and one end of the second mounting part is provided with a first riveting groove and a second riveting groove for riveting with the third bent component and the fourth bent component, respectively.

[0012] Furthermore, a first partition and a second partition are provided between the area formed by the first bent member and the second bent member and the area formed by the first riveting groove and the second riveting groove. The first partition and the second partition extend along the first insertion direction and fit against the inner wall of the first mounting part.

[0013] Furthermore, the insertion interface is configured as multiple, and the limiting member in each insertion interface is set on the same side.

[0014] Furthermore, the insertion interface has an asymmetrical structure with the same shape as the first mounting portion on a cross section perpendicular to the first insertion direction.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: 1. The composite terminal of this application adopts a shell structure with separate housings. Compared with the existing one-piece molded composite terminal housing, it does not require the design of complex molds and the use of high-precision molding equipment, thus achieving high material utilization and significantly reducing manufacturing costs. At the same time, the separate structure is more flexible in later maintenance. When the shell is partially damaged, the corresponding part can be replaced individually without replacing the entire shell, thereby effectively reducing maintenance costs. The pin-shaped plug of this invention is fixed to the shell along the first plugging direction, which can achieve a high-strength connection without the need for additional mechanical connection structures, significantly improving the overall structural strength of the terminal and simplifying the assembly process, further reducing production costs.

[0016] 2. The limiting groove provided on the outer surface of the composite terminal housing of this application can achieve a stable elastic locking with the connector housing, which not only ensures the positioning accuracy and vibration resistance during the assembly process, but also makes the installation and disassembly of the terminal more convenient. In addition, the asymmetrical structural design can effectively prevent incorrect assembly direction. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the pin-shaped plug and housing combination structure of a board-end composite terminal connector provided by the present invention; Figure 2 This is a schematic diagram of the pin-shaped plug structure of a board-end composite terminal connector provided by the present invention; Figure 3 This is a schematic diagram of the housing assembly process of a board-end composite terminal connector provided by the present invention; Figure 4 This is a schematic diagram of the assembled housing of a board-end composite terminal connector provided by the present invention; Figure 5 This is a schematic cross-sectional view of the housing of a board-end composite terminal connector provided by the present invention; Figure 6 This is a schematic diagram of the connection between a board-end composite terminal connector and a PCB provided by the present invention; Figure 7This is a schematic diagram of an assembly of a board-end composite terminal connector provided by the present invention; Figure 8 This is a schematic diagram of the internal snap-fit ​​connection of a board-end composite terminal connector provided by the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Pin-shaped connector; 11. First connecting part; 111. Covered area; 12. Second connecting part; 13. Isolation block; 2. Housing; 21. First mounting part; 211. Limiting groove; 212. Third bending part; 213. Fourth bending part; 22. Second mounting part; 221. First bending part; 222. Second bending part; 223. First riveting groove; 224. Second riveting groove; 225. First partition; 226. Second partition; 227. Guide; 3. Connector housing; 31. Limiting part; 311. Pressing part; 312. Snap-fit ​​part; 313. Deformation part; 32. Plug-in interface; A. First plug-in direction. Detailed Implementation

[0020] The technical solutions of the embodiments of this application 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.

[0021] like Figure 7 As shown, this embodiment provides a board-end composite terminal connector, which includes a pin-shaped plug 1, a housing 2, and a connector shell 3.

[0022] Specifically, such as Figures 1 to 3 As shown, the pin-shaped connector 1 includes a first connecting portion 11 and a second connecting portion 12, with the second connecting portion 12 disposed at the end of the first connecting portion 11. The first connecting portion 11 has a rectangular structure and is provided with a covered area 111 located in the middle region of the first connecting portion 11, which is used for laser welding to the second mounting portion 22 of the housing 2, thereby achieving the connection between the pin-shaped connector 1 and the housing 2. The second connecting portion 12 is connected to the first connecting portion 11 via an isolation block 13. The isolation block 13 is disposed at the connection between the first connecting portion 11 and the second connecting portion 12, serving as a structural transition and installation limit.

[0023] like Figure 6As shown, the second connecting part 12 adopts a fisheye-shaped structure for insertion and mating with the corresponding conductive through-hole of the PCB. The second connecting part 12 is configured with a fisheye-shaped structure, which has a rounded and tapered guide end face, serving as a guide and positioning function during insertion, and facilitating the accurate insertion of the second connecting part 12 into the PCB through-hole.

[0024] The board-end composite terminal connector also includes a housing 2, which includes a first mounting part 21 and a second mounting part 22. The second mounting part 22 forms a limiting connection with the first mounting part 21 along the first insertion direction A.

[0025] Specifically, such as Figure 3 and Figure 4 As shown, the first mounting portion 21 has a box-shaped structure and an asymmetrical structure on a cross section perpendicular to the first insertion direction A. This asymmetrical structure has a foolproof function, ensuring that the housing 2 can only be inserted into the connector housing 3 in the correct direction. A limiting groove 211 is provided on the surface of the first mounting portion 21. The limiting groove 211 is groove-shaped and located on the outer surface of the first mounting portion 21, and is used to engage with the limiting member 31 inside the connector housing 3. Through the engagement of the limiting groove 211 with the limiting member 31, the axial positioning of the housing 2 inside the connector housing 3 is achieved, preventing the housing 2 from coming out of the connector housing 3.

[0026] The limiting groove 211 exposes the covered area 111, allowing the covered area 111 to be welded to the second mounting part 22; the limiting groove 211 forms a limiting connection with the limiting member 31. When the whole formed by the housing 2 and the pin-shaped plug 1 is fully inserted into the connector housing 3, the snap-fit ​​part 312 of the limiting member 31 snaps into the limiting groove 211, further enhancing the stability of the connection.

[0027] A third bending member 212 and a fourth bending member 213 are provided at one end of the first mounting part 21. The third bending member 212 and the fourth bending member 213 extend outward from the end of the first mounting part 21 and bend downward to form a bent structure for riveting with the second mounting part 22. The second mounting part 22 has a groove-shaped structure, and its internal space is used to accommodate the pin-shaped connector 1. The first connecting part 11 is connected to the second mounting part 22 along the first insertion direction A through the covered area 111. Specifically, after the first connecting part 11 is inserted into the internal space of the second mounting part 22, the covered area 111 is fixed to the inner wall of the second mounting part 22 by laser welding.

[0028] In addition, the second mounting part 22 is provided with a guide 227 bent in opposite directions at one end adjacent to the first bending member 221 and the second bending member 222. The guide 227 guides the second mounting part 22 to be inserted into the first mounting part 21 and plays a coarse positioning role for the pin-shaped connector 1.

[0029] Within the vertical range covered by the covering area 111, the second mounting part 22 is provided with a first bending member 221 and a second bending member 222; the first bending member 221 and the second bending member 222 are respectively located on the inner walls of the two sides of the second mounting part 22, and bend towards each other to the position of the covering area 111.

[0030] A welding gap is provided between the first bent component 221 and the second bent component 222, and the first bent component 221 and the second bent component 222 are in contact with the surface of the first connecting portion 11. During laser welding, the laser beam irradiates the covered area 111 through the welding gap, connecting the first bent component 221 and the second bent component 222 with the covered area 111 to form a welded structure.

[0031] One end of the second mounting part 22 is provided with a first riveting groove 223 and a second riveting groove 224. The first riveting groove 223 and the second riveting groove 224 are groove-shaped and correspond to the positions of the third bent part 212 and the fourth bent part 213 of the first mounting part 21, respectively. During assembly, the third bent part 212 is aligned with the first riveting groove 223, and the fourth bent part 213 is aligned with the second riveting groove 224. The third bent part 212 and the fourth bent part 213 are deformed and fixed in the riveting grooves by the riveting process, thereby realizing the mechanical connection between the first mounting part 21 and the second mounting part 22.

[0032] A first partition 225 and a second partition 226 are provided between the area formed by the first bent member 221 and the second bent member 222 and the area formed by the first riveting groove 223 and the second riveting groove 224. The first partition 225 and the second partition 226 extend from the side of the second mounting part 22 along the first insertion direction A and fit against the inner wall of the first mounting part 21. The first partition 225 and the second partition 226 serve to isolate and reinforce, while also enhancing the overall structural strength.

[0033] like Figure 7 , Figure 8 As shown, the board-end composite terminal connector also includes a connector housing 3. The connector housing 3 has a seat-like structure and a plug interface 32 is provided on one side. The plug interface 32 is used to accommodate the housing 2 and the pin-shaped plug 1 as a whole.

[0034] Specifically, such as Figure 7 As shown, the insertion interface 32 has a through-hole structure, and its cross-sectional shape on the section perpendicular to the first insertion direction A is set to an asymmetrical structure with the same shape as the first mounting part 21. This corresponding asymmetrical structure design realizes a foolproof fit, ensuring that the whole formed by the housing 2 and the pin-shaped connector 1 can only be inserted into the insertion interface 32 in the correct direction, avoiding incorrect insertion.

[0035] The connector housing 3 can be provided with multiple insertion interfaces 32, each insertion interface 32 corresponding to a set of housing 2 and pin-shaped plug 1; the multiple insertion interfaces 32 are arranged in parallel to realize multiple electrical connections. In order to facilitate assembly and unified operation, the limiting members 31 in each insertion interface 32 are all set on the same side, that is, all limiting members 31 are located in the same relative position of their respective insertion interfaces 32.

[0036] like Figure 8 As shown, the insertion interface 32 is internally provided with a limiting member 31, which includes a pressing part 311, a deformable part 313, and a snap-fit ​​part 312. Specifically, the deformable part 313 is located at one end of the limiting member 31, near the entrance of the insertion interface 32. The pressing part 311 has a sloping or arc-shaped structure, tilted or bent towards the entrance of the insertion interface 32. When the entire assembly formed by the housing 2 and the pin-shaped connector 1 is inserted into the connector housing 3 along the first insertion direction A, the front end of the first mounting part 21 first contacts the sloping surface of the pressing part 311. The pressing part 311 applies a guiding effect to the first mounting part 21, while the first mounting part 21 generates a reaction force on the pressing part 311. The deformable part 313 connects the pressing part 311 and the fixed end of the limiting member 31, and has a certain degree of elasticity. When the first mounting part 21 pushes the inclined surface of the pressing part 311, the deformation part 313 undergoes elastic bending deformation, causing the pressing part 311 and the snap-fit ​​part 312 to move outward, making room for the insertion of the first mounting part 21; the snap-fit ​​part 312 is provided on the limiting member 31, located on the side of the pressing part 311 away from the deformation part 313. When the whole formed by the housing 2 and the pin-shaped plug 1 is fully inserted into place, the limiting groove 211 of the first mounting part 21 moves to the position of the snap-fit ​​part 312, and the elastic recovery of the deformation part 313 causes the snap-fit ​​part 312 to spring into the limiting groove 211, forming a snap-fit ​​limiting connection. At this time, the snap-fit ​​part 312 cooperates with the limiting groove 211 to achieve locking, preventing the whole formed by the housing 2 and the pin-shaped plug 1 from accidentally coming out of the connector housing 3.

[0037] The specific assembly process is as follows: First, the third bent part 212 and the fourth bent part 213 of the first mounting part 21 are respectively inserted into the first riveting groove 223 and the second riveting groove 224 of the second mounting part 22. The first mounting part 21 and the second mounting part 22 are connected by riveting to form an integral assembly of the housing 2. Then, the first connecting part 11 of the pin-shaped connector 1 is inserted into the second mounting part 22 of the housing 2, so that the covered area 111 is located at the welding gap between the first bent part 221 and the second bent part 222. The covered area 111 is welded and fixed to the first bent part 221 and the second bent part 222 by laser welding to finally form a single composite terminal assembly.

[0038] The assembled composite terminal assembly is inserted into the connector housing 3's insertion interface 32 along the first insertion direction A. Since both the first mounting part 21 and the insertion interface 32 are asymmetrical structures with corresponding shapes, they can only be inserted in the correct direction. During insertion, the first mounting part 21 pushes the inclined surface of the pressing part 311, causing the deformation part 313 to bend and the locking part 312 to move outward. When the first mounting part 21 is fully inserted, the limiting groove 211 aligns with the locking part 312, the deformation part 313 returns to its original position, and the locking part 312 engages with the limiting groove 211, achieving locking. At this time, the fisheye-shaped structure of the second connecting part 12 protrudes from the connector housing 3 and can be inserted into the corresponding through hole of the PCB to complete electrical conduction. The end of the first connecting part 11 protrudes from the housing 2 for insertion into the external female terminal to achieve electrical connection.

[0039] It should be noted that when the board-end composite terminal connector provided by the present invention is partially damaged, the wedge-shaped end of the pressing part 311 can be pried with a tool, thereby causing the deformation part 313 to deform, so that the snap-fit ​​part 312 can be disengaged from the limiting groove 211, thereby enabling the replacement of a single terminal.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A plate end composite terminal connector characterized by comprising: include: A pin-shaped connector (1) includes a first connecting part (11) and a second connecting part (12). The first connecting part (11) and the second connecting part (12) are used for connection in different ways, and the second connecting part (12) is disposed at the end of the first connecting part (11). The housing (2) is used to fix the pin-shaped connector (1), including a first mounting part (21) and a second mounting part (22) that forms a limiting connection with the first mounting part (21) along the first insertion direction. The connector housing (3) has a plug-in interface (32) on one side for accommodating the housing (2) and the pin-shaped plug (1) as a whole; the plug-in interface (32) is provided with a limiting member (31) inside, the limiting member (31) being configured to be limited and connected to the first mounting part (21) when the whole formed by the housing (2) and the pin-shaped plug (1) is inserted into the plug-in interface (32) along the first plugging direction; The second connecting part (12) is configured as a fisheye-shaped structure; the first connecting part (11) is provided with a covered area (111), and the first connecting part (11) is connected to the second mounting part (22) through the covered area (111) along the first insertion direction; The first mounting part (21) has an asymmetrical structure on a cross section perpendicular to the first insertion direction; The surface of the first mounting part (21) is provided with a limiting groove (211) for exposing the covered area (111), and the limiting groove (211) and the limiting member (31) form a limiting connection; The limiting member (31) is provided with a pressing part (311) for guiding and pressing the first mounting part (21), the pressing part (311) extending obliquely toward the inlet direction of the insertion interface (32).

2. The plate-end composite terminal connector according to claim 1, characterized by The first connecting part (11) is laser welded to the second mounting part (22) of the housing (2) through the covered area (111); The second connecting part (12) is configured for plugging.

3. The plate-end composite terminal connector according to claim 1, characterized by The pin-shaped connector (1) is also provided with an isolation block (13), and the second connecting part (12) is connected to the first connecting part (11) through the isolation block (13).

4. The plate-end composite terminal connector according to claim 1, characterized by The limiting member (31) also includes a snap-fit ​​part (312) and a deformation part (313). When the housing (2) and the needle-shaped plug (1) are inserted into the plug interface (32) along the first plugging direction, the deformation part (313) is deformed by the squeezing part (311), and the snap-fit ​​part (312) is limited to the limiting groove (211). The end of the snap-fit ​​part (312) is a wedge-shaped structure for easy disassembly.

5. The plate-end composite terminal connector according to claim 1, characterized by The second mounting part (22) is provided with a first bending member (221) and a second bending member (222) in the vertical range covered by the covered area (111); the first bending member (221) and the second bending member (222) bend towards each other; A welding gap is provided between the first bending member (221) and the second bending member (222), and both are in contact with the surface of the first connecting part (11).

6. The plate-end composite terminal connector according to claim 5, characterized by The second mounting part (22) is provided with a guide part (227) at one end adjacent to the first bending part (221) and the second bending part (222), the guide part (227) guides the second mounting part (22) to be inserted into the first mounting part (21) and plays a role of coarse positioning for the needle-shaped plug-in part (1).

7. The plate-end composite terminal connector according to claim 5, characterized by One end of the first mounting part (21) is provided with a third bending part (212) and a fourth bending part (213), and one end of the second mounting part (22) is provided with a first riveting groove (223) and a second riveting groove (224) respectively for riveting with the third bending part (212) and the fourth bending part (213).

8. The plate-end composite terminal connector according to claim 7, characterized by The first bending part (221) and the second bending part (222) form a region to the region formed by the first riveting groove (223) and the second riveting groove (224), and the first partition (225) and the second partition (226) are arranged between the two regions, the first partition (225) and the second partition (226) respectively extend along the first plug-in direction and are attached to the inner wall of the first mounting part (21).

9. The plate-end composite terminal connector according to claim 1, characterized by The plug-in part (32) is provided with a plurality of limiting parts (31) in each plug-in part (32), and the setting surfaces of the limiting parts (31) are the same side surface.

10. The plate-end composite terminal connector according to claim 1, characterized by The plug-in part (32) is provided with a plurality of limiting parts (31) in each plug-in part (32), and the setting surfaces of the limiting parts (31) are the same side surface. The plug-in part (32) is provided with a plurality of limiting parts (31) in each plug-in part (32), and the setting surfaces of the limiting parts (31) are the same side surface.

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