A connector with terminal limiting and anti-rotation

Abstract

This utility model discloses a connector with terminal limiting and anti-rotation, including a connector housing and a connector body connected to each other. Terminals are installed within the connector body. The connector body includes a first body and a second body with an integrally formed structure. The first body is snap-fitted onto the connector housing. The second body has an open limiting cavity, and the inner wall of the limiting cavity has a first anti-rotation wall and a second anti-rotation wall. The limiting cavity extends outward and has a locking slot. The terminal is encased in an insulator, which includes an integrally formed connecting post and an anti-rotation block. The side of the anti-rotation block has a first contact portion and a second contact portion, and extends to have a locking portion. The locking portion is engaged within the locking slot, and the anti-rotation block is embedded within the limiting cavity. Simultaneously, the first contact portion abuts against the first anti-rotation wall, and the second contact portion abuts against the second anti-rotation wall. This device, by adding anti-rotation walls, straightens the insulator around its perimeter, thereby achieving the purpose of preventing terminal rotation and improving the soldering quality between the terminal and the circuit board socket.

Description

Technical Field

[0001] This utility model relates to the field of connector partial improvement design technology, and in particular to a connector with terminal limiting and anti-rotation. Background Technology

[0002] With the development of technology, more and more electronic and electrical devices are appearing in people's daily lives, especially in electronic devices, where connectors are needed for almost all kinds of electronic devices. For RF signal transmission connectors in automobiles, the industry currently focuses on tighter mating between terminals and PCBA holes in SMT processes to achieve better soldering reliability. This necessitates higher precision in terminal positioning within the connector to ensure feasibility and mass production. Because precise installation is required to meet production requirements, assembly efficiency is low, and high operator skill is required. In actual production, when terminals are inserted into the main body at the tail end, contact gap issues can cause terminals to rotate and interfere with the PBCA holes, resulting in poor SMT soldering contact. This makes it easy for SMT components to be installed incorrectly, causing positional misalignment. Therefore, we propose a targeted product structure improvement and optimization to avoid the problem of misalignment caused by terminal twisting.

[0003] In the prior art, patent CN222620191U discloses a single-row vertical connector that is easy to position. It includes a connector body, an end fixedly connected to the upper surface of the connector body, a middle partition fixedly connected to the lower surface of the end, a contact body fixedly connected to the lower surface of the middle partition, a contact head provided on the front surface of the contact body, and a solder foot fixedly connected to the lower surface of the contact body. A shell is fitted onto the outer surface of the connector body, and ribs are fixedly connected to the lower surface of the shell. This invention, through the design of abutment plates, abutment blocks, elastic telescopic rods, brackets, and elastic sliding rods, increases the friction between the single-row vertical SMT and the PCB board when mounted on the PCB board. This ensures stable fixation of the SMT on the PCB board even without soldering, facilitating soldering by workers. It also facilitates the disassembly and removal of the single-row vertical SMT from the PCB board, greatly increasing the stability of the single-row vertical SMT during installation.

[0004] Patent CN222508092U discloses a snap-fit ​​short-body Type-C connection structure, including a shell, a limiting buckle, a limiting groove, a folding buckle, a plastic body tongue, a terminal, a support mechanism, and a snap-fit. The shell has symmetrically arranged folding buckles on both sides of one end. The inner sidewalls of the folding buckles are tightly fastened to the left and right front ends of the plastic body tongue. Support mechanisms are respectively arranged at the bottom ends of the left and right sides of the shell. Each support mechanism includes a first support body, which includes a first connecting section and a platform stage. The horizontal plane of the platform stage is at the same level as the bottom surface of the terminal. The parallel part of the bottom end of the support mechanism is flush with the lowest part of the terminal, forming a triangular support. Thus, after the support mechanism is inserted into the PCB motherboard's socket, the lowest part of the terminal and the platform stage will abut against the motherboard, preventing gaps between the shell's soldering position and the shell surface, which could lead to poor placement during SMT processes.

[0005] In order to solve one of the above problems, this application provides a connector with terminal limiting and anti-rotation. Utility Model Content

[0006] The purpose of this invention is to solve the problems existing in the prior art by proposing a connector with terminal limiting and anti-rotation. By adding anti-rotation walls to straighten the insulator around its perimeter, it effectively prevents the terminals from rotating, ensures the correct alignment of the terminals with the circuit board sockets, and improves the SMT soldering yield.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a connector with terminal limiting and anti-rotation, comprising a connector housing and a connector body connected to each other, wherein terminals are installed inside the connector body. The connector body comprises a first body and a second body with an integrally formed structure, that is, the connector body is directly integrally formed by injection molding. The first body is snap-fitted onto the connector housing for quick disassembly and assembly. The second body has an open limiting cavity, and the inner wall of the limiting cavity has a first anti-rotation wall and a second anti-rotation wall. The limiting cavity extends outward and has a locking slot. The terminals are encased in an insulator, that is, the terminals are directly positioned and formed into an integral part with the insulator in the injection mold as inserts. The insulator includes an integrally formed connecting post and an anti-rotation block. The side of the anti-rotation block has a first contact part and a second contact part and extends to have a locking part. The locking part is locked in the locking slot and the anti-rotation block is embedded in the limiting cavity. At the same time, the first contact part abuts against the first anti-rotation wall and the second contact part abuts against the second anti-rotation wall.

[0008] Furthermore, as described above, the limiting cavity has a square structure, with the first anti-rotation wall and the second anti-rotation wall located at two diagonal corners of the limiting cavity, and the first contact portion and the second contact portion located at two diagonal corners of the anti-rotation block, so that the insulator can be abutted from all sides to limit rotation.

[0009] Furthermore, as described above, the connecting post is located at one end of the anti-rotation block, and the locking part is located at the other end of the anti-rotation block and extends perpendicular to the axial direction of the connecting post.

[0010] Furthermore, as described above, the first body is provided with a first assembly hole, and the connecting post is fitted into the first assembly hole.

[0011] Furthermore, as described above, the insulator outer sleeve is provided with a sleeve that is fitted into the first mounting hole.

[0012] Furthermore, as described above, one end of the terminal extends outward from the mounting portion, and the other end of the terminal extends in the axial direction of the connecting post and is located inside the sleeve. The sleeve is fitted onto the connecting post and abuts against the end of the anti-rotation block.

[0013] Furthermore, as described above, the second body is provided with a plurality of guide posts, and the guide posts and the terminals on the mounting part extend in the same direction.

[0014] Furthermore, as described above, the first main body is provided with a buckle and a limiting body, and the connector housing is provided with a first housing. The first housing is machined with a locking hole and a partition groove. The buckle is snapped into the locking hole and the limiting body is located in the partition groove. The buckle and the locking hole are engaged to realize the assembly connection between the connector main body and the connector housing. The partition groove is used for the limiting body to separate and limit.

[0015] Furthermore, as described above, the connector body also includes a second housing, which is integrally formed with the first housing. The second housing has a second assembly hole, and the sleeve is fitted into the second assembly hole.

[0016] Furthermore, as described above, the second housing also includes an insertion part, which is covered with a pin. The pin is positioned and molded as an insert directly in the injection mold together with the connector housing to form an integral part.

[0017] Compared with the prior art, the beneficial effects of this utility model are: by adding anti-rotation walls, the device straightens the insulator around its perimeter. When the insulator with terminals is installed into the connector body, its contact positions on the top, bottom, left, and right are protected, thereby preventing the terminals from rotating. This ensures that the terminals fit tightly with the circuit board holes, guaranteeing the correct alignment of the terminals and the circuit board sockets. This facilitates better welding reliability in subsequent terminal soldering operations on the circuit board. Attached Figure Description

[0018] Figure 1 The three-dimensional representation of this utility model Figure 1 ;

[0019] Figure 2 This is an explosion illustration of the present invention. Figure 1 ;

[0020] Figure 3 The three-dimensional representation of this utility model Figure 2 ;

[0021] Figure 4 This is an explosion illustration of the present invention. Figure 2 ;

[0022] Figure 5 This is an assembly diagram of the connector body and insulator of this utility model;

[0023] Figure 6 This is a bottom view of the present invention;

[0024] Figure 7 for Figure 6 Sectional view along the AA direction.

[0025] In the figure: 1. Connector housing; 11. First housing; 112. Locking hole; 12. Second housing; 120. Second assembly hole; 121. Insertion part; 2. Connector body; 20. First body; 201. First assembly hole; 202. Buckle body; 203. Limiting body; 21. Second body; 210. Limiting cavity; 211. First anti-rotation wall; 212. Second anti-rotation wall; 213. Bayonet; 214. Guide post; 3. Terminal; 4. Insulator; 41. Connecting post; 42. Anti-rotation block; 420. Locking part; 421. First contact part; 422. Second contact part; 5. Sleeve; 6. Pin. Detailed Implementation

[0026] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "fixed," "installed," "connected," "set," etc., should be interpreted broadly. For example, when an element is said to be "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "installed" on another element, it can be directly installed on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within the two elements.

[0028] Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1

[0031] Reference Figure 1-7 As shown, this utility model discloses a connector with terminal limiting and anti-rotation, comprising a connector housing 1 and a connector body 2 connected to each other. Terminals 3 are installed inside the connector body 2. The connector body 2 includes a first body 20 and a second body 21 with an integrally formed structure, i.e., the connector body 2 is directly integrally formed by injection molding. The first body 20 is snap-fitted onto the connector housing 1, and the snap-fit ​​connection facilitates quick assembly and disassembly with the connector housing 1. The second body 21 has an open limiting cavity 210, facilitating assembly operations from the opening of the limiting cavity 210. The inner wall of the limiting cavity 210 is provided with a first anti-rotation wall 21. 1. The second anti-rotation wall 212 and the limiting cavity 210 extend outward and are provided with a bayonet 213; the terminal 3 is covered inside the insulator 4, that is, the terminal 3 is directly positioned and formed into a whole with the insulator 4 in the injection mold as an insert. The insulator 4 includes a connecting column 41 and an anti-rotation block 42 with an integral structure. The side of the anti-rotation block 42 is provided with a first contact part 421 and a second contact part 422 and extends to provide a locking part 420. The locking part 420 is locked in the bayonet 213 and the anti-rotation block 42 is embedded in the limiting cavity 210. At the same time, the first contact part 421 abuts against the first anti-rotation wall 211 and the second contact part 422 abuts against the second anti-rotation wall 212.

[0032] Combination Figure 1-5 As can be seen, terminal 3 and insulator 4 are integrated. Insulator 4 is assembled in the limiting cavity 210 on connector body 2. One end of terminal 3 extends out of insulator 4 and is located outside bayonet 213. A part of insulator 4 is snapped into bayonet 213. The other part of insulator 4 is installed in limiting cavity 210 and abuts against the first anti-rotation wall 211, the second anti-rotation wall 212, and the inner wall of limiting cavity 210. This allows the insulator 4 to be abutted and limited from rotation on all sides. At the same time, since the contact area between insulator 4 and the inner wall of limiting cavity 210 and the two anti-rotation walls is small, it is easy to optimize the above structural design. The assembly of insulator 4 is convenient and the manufacturing cost will not increase significantly. This ensures that terminal 3 will not wobble when assembled with the hole of the circuit board, so as not to affect the soldering quality between terminal 3 and circuit board. This meets the higher positional accuracy requirements of terminal 3 in connector, has feasibility and mass production capability, meets the current industry requirements for SMT process, and makes terminal 3 fit more tightly with circuit board hole to obtain better soldering reliability performance.

[0033] Example 2

[0034] Reference Figure 1-7 As shown, based on the technical solution of Embodiment 1, a connector with terminal limiting and anti-rotation features a square limiting cavity 210. Correspondingly, the overall structure of the anti-rotation block 42 is square. Specifically, the first anti-rotation wall 211 and the second anti-rotation wall 212 are located at two diagonal corners of the limiting cavity 210, and the first contact portion 421 and the second contact portion 422 are located at two diagonal corners of the anti-rotation block 42. Figure 2 and Figure 5 As shown, the advantages of placing the two anti-rotation walls diagonally opposite each other are: first, the change in this position design does not require the development of a new mold, but can be directly obtained by modifying the original injection mold, resulting in lower modification costs; second, the range of change in this position design is small, and it can ensure that the four sides of the insulator 4 are in contact at the same time, while making the contact area between the insulator 4 and the anti-rotation wall small, which facilitates assembly while satisfying the limit and anti-rotation requirements.

[0035] Furthermore, for each part of insulator 4, in combination Figure 2 and Figure 4 It can be seen that the connecting post 41 is located at one end of the anti-rotation block 42, and the locking part 420 is located at the other end of the anti-rotation block 42 and extends perpendicular to the axial direction of the connecting post 41. Furthermore, the first body 20 is provided with a first mounting hole 201, and the connecting post 41 is fitted into the first mounting hole 201. To increase assembly stability, a sleeve 5 is provided on the outer sleeve of the insulator 4, and the sleeve 5 is fitted into the first mounting hole 201, such as... Figure 7 As shown.

[0036] Example 3

[0037] Reference Figure 1-7 As shown, based on the technical solution of the above embodiments, a connector with terminal limiting and anti-rotation, combined with... Figure 7 It is known that one end of the terminal 3 extends outward from the mounting part 420, and the other end of the terminal 3 extends in the axial direction of the connecting post 41 and is located inside the sleeve 5. The sleeve 5 is fitted onto the connecting post 41 and abuts against the end of the anti-rotation block 42.

[0038] Furthermore, such as Figure 1-4 It is known that the second main body 21 is provided with a plurality of guide posts 214. The guide posts 214 and the terminal 3 on the mounting part 420 extend in the same direction, and play a guiding and limiting role when the connector is assembled with other components.

[0039] Furthermore, the first main body 20 is externally provided with a buckle 202 and a limiting body 203. The connector housing 1 is provided with a first housing 11, on which a locking hole 112 and a partition groove are machined. The buckle 202 is snapped into the locking hole 112 and the limiting body 203 is located in the partition groove. The buckle 202 and the locking hole 112 engage to realize the assembly connection between the connector main body 2 and the connector housing 1. The partition groove is used for the limiting body 203 to separate and limit. In addition, the connector main body 2 also includes a second housing 12. The second housing 12 and the first housing 11 are integrally formed. The second housing 12 is machined with a second assembly hole 120, and the sleeve 5 is embedded in the second assembly hole 120. (Refer to...) Figure 7 As shown. Furthermore, combined with Figure 3 and Figure 4 As shown, the second housing 12 also includes an insertion part 121, and the insertion part 121 is covered with a pin 6. That is, the pin 6 is directly positioned and formed into a single piece with the connector housing 1 in the injection mold as an insert.

[0040] In this utility model device, the assembly and matching relationships of the various components, the materials and molding processes of each component, etc., are existing technologies or materials. The relevant technical personnel can directly purchase or order them from the market according to the required product model and specifications.

[0041] All electrical components mentioned in the text are connected to an external main controller and 220V AC mains power or industrial power. The main controller can be a conventional known device such as a computer that plays a control role.

[0042] The above description is merely a preferred embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It is obvious to those skilled in the art that this utility model is not limited to the details of the above embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the protection scope of this utility model.

Claims

1. A connector with terminal limiting and anti-rotation, comprising a connector housing (1) and a connector body (2) connected to each other, wherein terminals (3) are installed inside the connector body (2), characterized in that, The connector body (2) comprises a first body (20) and a second body (21) with an integrally formed structure. The first body (20) is snap-fitted onto the connector housing (1). The second body (21) has an open limiting cavity (210). The inner wall of the limiting cavity (210) has a first anti-rotation wall (211) and a second anti-rotation wall (212). The limiting cavity (210) extends outward and has a bayonet (213). The terminal (3) is encased in an insulator (4). 4) Includes a connecting column (41) and an anti-rotation block (42) with an integrally formed structure. The side of the anti-rotation block (42) is provided with a first contact part (421) and a second contact part (422) and extends to provide a locking part (420). The locking part (420) is locked in the slot (213) and the anti-rotation block (42) is embedded in the limiting cavity (210). At the same time, the first contact part (421) abuts against the first anti-rotation wall (211) and the second contact part (422) abuts against the second anti-rotation wall (212).

2. The connector with terminal limiting and anti-rotation as described in claim 1, characterized in that, The limiting cavity (210) has a square structure. The first anti-rotation wall (211) and the second anti-rotation wall (212) are located at two diagonal corners of the limiting cavity (210). The first contact part (421) and the second contact part (422) are located at two diagonal corners of the anti-rotation block (42).

3. A connector with terminal limiting and anti-rotation as described in claim 2, characterized in that, The connecting post (41) is located at one end of the anti-rotation block (42), and the mounting part (420) is located at the other end of the anti-rotation block (42) and extends perpendicular to the axial direction of the connecting post (41).

4. A connector with terminal limiting and anti-rotation as described in claim 3, characterized in that, The first main body (20) is provided with a first assembly hole (201), and the connecting post (41) is embedded in the first assembly hole (201).

5. A connector with terminal limiting and anti-rotation as described in claim 4, characterized in that, The insulator (4) is covered with a sleeve (5), which is fitted into the first assembly hole (201).

6. A connector with terminal limiting and anti-rotation as described in claim 5, characterized in that, One end of the terminal (3) extends outward from the mounting part (420), and the other end of the terminal (3) extends in the axial direction of the connecting post (41) and is located inside the sleeve (5). The sleeve (5) is fitted on the connecting post (41) and abuts against the end of the anti-rotation block (42).

7. A connector with terminal limiting and anti-rotation as described in claim 6, characterized in that, The second main body (21) is provided with a plurality of guide posts (214), and the guide posts (214) and the terminal (3) on the mounting part (420) extend in the same direction.

8. A connector with terminal limiting and anti-rotation as described in claim 7, characterized in that, The first main body (20) is provided with a buckle (202) and a limiting body (203) on its outside. The connector housing (1) is provided with a first housing (11). The first housing (11) is machined with a snap hole (112) and a partition groove. The buckle (202) is snapped into the snap hole (112) and the limiting body (203) is located in the partition groove.

9. A connector with terminal limiting and anti-rotation as described in claim 8, characterized in that, The connector body (2) further includes a second housing (12), the second housing (12) and the first housing (11) are integrally formed, the second housing (12) is machined with a second assembly hole (120), and the sleeve (5) is embedded in the second assembly hole (120).

10. A connector with terminal limiting and anti-rotation as described in claim 9, characterized in that, The second housing (12) also includes an insertion part (121), and the insertion part (121) is covered with a pin (6).

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