A mistaken insertion prevention connector

Abstract

The application relates to the technical field of charging connectors, in particular to a mistaken-plug-preventing connector which comprises a plug and a socket, a plurality of arc-shaped positioning key strips are arranged on the plug in a circumferential direction, an inner recessed positioning groove is arranged on the inner wall of one of the positioning key strips, and a positioning rib strip opposite to the positioning groove is fixed on the outer wall of the socket. The positioning grooves on the plugs of different groups are arranged on different positioning key strips, and the positioning rib strips on the sockets corresponding to the plugs are arranged at different positions; only when the plug and the socket of the same group are inserted into each other, the positioning rib strip and the positioning groove can be inserted into each other, the plugs and the sockets of different groups cannot be inserted into each other due to the limitation of the positioning rib strip, mistaken plug is avoided, and the plugs of different groups can be simultaneously produced and processed by using the same mold during production; the positioning key strips in the initial process are all solid, and the positioning grooves can be cut in the different positioning key strips on the sockets of different groups in the subsequent process, so that processing is convenient.

Description

Technical Field

[0001] This application relates to the technical field of charging connectors, and in particular to a connector that prevents mis-mating. Background Technology

[0002] In electronic devices, electrical connectors are typically used to achieve electrical connections between electrically independent components.

[0003] Since most existing electrical connectors are mass-produced products, each socket can be mated with any plug of the same model. They lack error correction features, making it difficult to distinguish between multiple sets of electrical connector assemblies of the same model in the same situation. Plugs and sockets that do not belong to the same group are often misaligned, especially in situations where blind insertion of plugs and sockets is required. The problem of misinsertion of plugs and sockets of electrical connector assemblies is particularly prominent, which inevitably leads to unpredictable dangers. Utility Model Content

[0004] To prevent mis-insertion of connectors, this application provides a mis-insertion-proof connector.

[0005] The mis-mating prevention connector provided in this application adopts the following technical solution:

[0006] A mis-insertion prevention connector includes a plug and a socket. The plug has multiple arc-shaped positioning key strips circumferentially, one of which has a recessed positioning groove on its inner wall. The socket has a positioning rib fixed on its outer wall, which is directly opposite the positioning groove.

[0007] By adopting the above technical solution, the positioning slots on different groups of plugs are cut on different positioning key strips. Similarly, the corresponding positioning ribs on the sockets are also located in different positions. Only when plugs and sockets of the same group are plugged in can they be inserted with the positioning ribs and positioning slots aligned. Plugs and sockets of different groups cannot be plugged in due to the restriction of the positioning ribs, thus avoiding mis-insertion. Moreover, during production, plugs of different groups can be manufactured and processed simultaneously using the same tool. The positioning key strips in the initial process are all solid. Subsequent grouping and cutting of positioning slots at different positioning key strips on different groups of sockets is all that is needed, making processing convenient.

[0008] Preferably, the socket includes a protective cylinder, and a positioning cylinder is fitted on the outer wall of the protective cylinder, with the positioning rib fixed to the outer wall of the positioning cylinder.

[0009] By adopting the above technical solution, the positioning cylinder and the protective cylinder are set separately. The positioning cylinder can be processed and assembled separately, thereby ensuring the correspondence between the plug and the socket during the production process. Even if there is a processing error, only the external positioning cylinder needs to be replaced, without replacing the internal protective cylinder together, thus saving costs.

[0010] Preferably, the outer wall of the protective cylinder is provided with an annular mounting groove, and the inner wall of the positioning cylinder is fixed with a mounting protrusion that mates with the mounting groove. The side of the mounting protrusion facing the socket is provided with a mounting slope, and the end of the mounting protrusion away from the mounting slope is provided with an abutting plane parallel to the side wall of the mounting groove.

[0011] By adopting the above technical solution, the protective cylinder is inserted into the positioning cylinder. During the insertion process, the protective cylinder first contacts the installation inclined surface. The installation inclined surface is squeezed and deformed, passing the end of the protective cylinder and located on the surface of the protective cylinder. As the protective cylinder goes deeper, the final installation protrusion is embedded in the installation groove, and the contact plane contacts the side of the installation groove, thus completing the installation, which is relatively convenient.

[0012] Preferably, the end of the positioning cylinder is provided with a limiting ring, the inner diameter of which is larger than the inner diameter of the protective cylinder and smaller than the outer diameter of the protective cylinder. When the contact plane contacts the side wall of the mounting groove, the limiting ring contacts the end face of the protective cylinder.

[0013] By adopting the above technical solution, the positioning cylinder is installed on the outer wall of the protective cylinder, the installation protrusion is embedded in the installation groove, the contact plane abuts against the side of the installation groove, and the limiting ring abuts against the end face of the protective cylinder. The two work together to limit the position of the positioning cylinder and improve the stability of the positioning cylinder.

[0014] Preferably, the mounting protrusions are provided in multiple portions and are evenly distributed circumferentially on the inner wall of the protective cylinder.

[0015] By adopting the above technical solution, multiple mounting protrusions improve the connection strength of the positioning cylinder.

[0016] Preferably, the socket is provided with a conductive rod located in the inner ring of the protective cylinder, and an anti-arc cap is installed at the end of the conductive rod. The end of the conductive rod is provided with a conical mounting head that passes through the inner ring of the anti-arc cap. An annular connecting groove is formed between the mounting head and the conductive rod. The inner wall of the end of the anti-arc cap facing the conductive rod is provided with several connecting protrusions for being embedded in the connecting groove.

[0017] By adopting the above technical solution, the anti-arc cap is connected to the conductive rod by a snap-fit ​​method, which is convenient for disassembly and assembly and easy to install.

[0018] Preferably, the socket has a support platform fixed inside for supporting the conductive rod. The support platform is tapered, and the diameter of the end of the support platform facing the anti-arc cap is smaller than the diameter of the other end. The support platform has several deformation grooves. The outer wall of the conductive rod has a limiting piece that is embedded in the end of the support platform with the smaller diameter. The diameter of the limiting piece is smaller than the inner diameter of the end of the support platform away from the anti-arc cap and larger than the inner diameter of the end of the support platform near the anti-arc cap.

[0019] By adopting the above technical solution, the conductive rod is inserted from the end of the support platform with a larger diameter. When the limiting plate slides inside the support platform, the limiting plate gradually expands the support platform. The deformation groove provides deformation space for the deformation of the support platform until the limiting plate passes over the support platform. The support platform then retracts and the limiting plate is located at the end of the support platform and abuts against the support platform, which is convenient for installation.

[0020] Preferably, the lower end of the plug is provided with a handle, and the connection between the plug and the handle is provided with a gripping step surface.

[0021] By adopting the above technical solution, when the operator holds the handle, the thumb and index finger press on the gripping step surface, and the friction of the gripping step surface is greater, which makes it easier for the operator to hold and improves grip stability.

[0022] In summary, this application includes the following beneficial technical effects:

[0023] Different groups of plugs are produced using the same mold to form uniform semi-finished products. During further processing, positioning grooves at different positions are cut on the plugs of different groups. This reduces production costs, makes them easy to use, and allows for differentiation between plugs of different groups, preventing misinsertion. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the embodiment;

[0025] Figure 2 This is a schematic diagram of the plug structure in the embodiment;

[0026] Figure 3 This is a schematic diagram of the socket structure in the embodiment;

[0027] Figure 4 This is a schematic diagram of the internal structure of the socket in the embodiment;

[0028] Figure 5 yes Figure 4 Enlarged schematic diagram of part A in the middle.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Plug; 11. Positioning key strip; 12. Positioning groove; 13. Handle; 14. Grip step surface; 15. Limiting groove; 2. Socket; 21. Positioning rib; 22. Limiting block; 3. Protective cylinder; 31. Mounting groove; 4. Positioning cylinder; 41. Mounting protrusion; 411. Mounting bevel; 412. Contact surface; 42. Limiting retaining ring; 5. Conductive rod; 51. Mounting head; 52. Connecting groove; 53. Limiting piece; 6. Anti-arc cap; 61. Connecting protrusion; 7. Support platform; 71. Deformation groove. Detailed Implementation

[0031] The present application will be further described in detail below with reference to all the accompanying drawings.

[0032] Example

[0033] This application discloses a connector for preventing mis-mating, as shown in the embodiments below. Figures 1 to 3 The device includes a plug 1 and a socket 2. The plug 1 has multiple arc-shaped positioning key strips 11 circumferentially. In this embodiment, there are four positioning key strips 11. One of the positioning key strips 11 has a recessed positioning groove 12 on its inner wall. The positioning grooves 12 of different groups of plugs 1 are located on different positioning key strips 11, thereby distinguishing between different groups of plugs 1. The socket 2 has a positioning rib 21 fixed on its outer wall, which is directly opposite to the positioning groove 12. Since the positioning grooves 12 on different groups of plugs 1 are located in different positions, the positioning ribs 21 on different groups of sockets 2 are also located in different positions, thus preventing mis-insertion of plugs 1 and sockets 2 from different groups.

[0034] Reference Figures 1 to 2 The plug 1 has a handle 13 at its lower end, and a gripping step surface 14 is provided at the connection between the plug 1 and the handle 13 for easy gripping by the operator. The plug 1 has a limiting groove 15, and the limiting grooves 15 of different groups of plugs 1 are located at the same position.

[0035] Reference Figure 1 and Figure 4 A conductive rod 5 is inserted into the socket 2. A hollow support platform 7 for supporting the conductive rod 5 is fixed inside the socket 2. A through hole is formed in the center of the support platform 7. The support platform 7 is made of elastic material. The support platform 7 is tapered, with the diameter of the end facing the plug 1 being smaller than the diameter of the other end. The end with the larger diameter of the support platform 7 is the insertion end, and the end with the smaller diameter is the contact end. Several deformation grooves 71 are evenly distributed around the side wall of the support platform 7.

[0036] Reference Figure 4 and Figure 5 A limiting piece 53 is fixed to the outer wall of the conductive rod 5 for contacting the contact end. The diameter of the limiting piece 53 is smaller than the diameter of the insertion end but larger than the diameter of the contact end. When the conductive rod 5 is inserted into the socket 2, the conductive rod 5 is inserted into the support platform 7 from the insertion end. As the conductive rod 5 is gradually inserted, the limiting piece 53 gradually moves from the insertion end towards the contact end, and the limiting piece 53 gradually expands the support platform 7 during the movement. The support platform 7 compresses the deformation groove 71 until the limiting piece 53 passes over the contact end and exits from the support platform 7. At this time, the support platform 7 returns to its original position under its own elastic force, and the end of the limiting piece 53 at the contact end contacts the end face of the contact end.

[0037] Reference Figure 1 and Figure 4A mounting head 51 with a diameter smaller than that of the conductive rod 5 is fixed to the end of the conductive rod 5 facing the plug 1. The end of the mounting head 51 facing the plug 1 is arc-shaped, and an annular connecting groove 52 is formed between the end of the mounting head 51 facing away from the plug 1 and the conductive rod 5. An anti-arc cap 6 is installed on the end of the conductive rod 5 facing the plug 1. The anti-arc cap 6 has an inverted "C" shaped cross-section. Several connecting protrusions 61 for engaging within the connecting groove 52 are fixed to the inner wall of the end of the anti-arc cap 6 facing the limiting piece 53. The anti-arc cap 6 is installed at the mounting head 51, and the connecting protrusions 61 are embedded within the connecting groove 52.

[0038] Reference Figure 2 and Figure 3 A protective cylinder 3 is fixed to the socket 2, covering the outside of the end of the conductive rod 5. A positioning cylinder 4 is fitted on the outer wall of the protective cylinder 3. A positioning rib 21 is fixed to the outer wall of the positioning cylinder 4, and a limiting block 22 that cooperates with the limiting groove 15 is fixed on the outer wall of the positioning cylinder 4. The position of the positioning rib 21 relative to the limiting block 22 is different in different groups of socket 2.

[0039] Reference Figure 4 and Figure 5 The outer wall of the protective cylinder 3 is provided with an annular mounting groove 31, and the inner wall of the positioning cylinder 4 is uniformly fixed with a number of mounting protrusions 41 that cooperate with the mounting groove 31. When the positioning cylinder 4 is inserted into the protective cylinder 3, the mounting protrusions 41 are embedded in the mounting groove 31.

[0040] Reference Figure 4 and Figure 5 The mounting protrusion 41 has a mounting slope 411 on the side facing the socket 2, and a contact surface 412 parallel to the side wall of the mounting groove 31 on the end of the mounting protrusion 41 facing away from the mounting slope 411. When the protective cylinder 3 and the positioning cylinder 4 are sleeved, the protective cylinder 3 is inserted into the positioning cylinder 4 until the end of the protective cylinder 3 contacts the mounting slope 411 and squeezes the mounting slope 411. The mounting slope 411 is deformed by the pressure and passes over the end face of the protective cylinder 3 to the side of the protective cylinder 3 until it moves to the mounting groove 31. The mounting protrusion 41 is embedded in the mounting groove 31, and the contact surface 412 contacts the side wall of the mounting groove 31, thus limiting the positioning cylinder 4.

[0041] Reference Figure 4 and Figure 5 The positioning cylinder 4 has a limiting ring 42 at its end. The inner diameter of the limiting ring 42 is larger than the inner diameter of the protective cylinder 3 but smaller than the outer diameter of the protective cylinder 3. When the contact surface 412 contacts the side wall of the mounting groove 31, the limiting ring 42 contacts the end face of the protective cylinder 3. The positioning cylinder 4 is installed on the outer wall of the protective cylinder 3. The mounting protrusion 41 is embedded in the mounting groove 31. The contact surface 412 contacts the side of the mounting groove 31, and the limiting ring 42 contacts the end face of the protective cylinder 3. The two work together to limit the position of the positioning cylinder 4 and improve the stability of the positioning cylinder 4.

[0042] The implementation principle of the anti-misinsertion connector in this application embodiment is as follows: the operator holds the handle 13 and aligns the plug 1 with the socket 2 for insertion. When plugs 1 and sockets 2 of different groups are inserted, since the positioning ribs 21 and positioning grooves 12 do not correspond, plugs 1 and sockets 2 of different groups cannot be inserted, thereby preventing misinsertion.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A connector designed to prevent mis-mating, comprising a plug (1) and a socket (2), characterized in that: The plug (1) has multiple arc-shaped positioning key strips (11) circumferentially arranged, and one of the positioning key strips (11) has a recessed positioning groove (12) on its inner wall. The socket (2) has a positioning rib (21) fixed on its outer wall, which is directly opposite to the positioning groove (12). The socket (2) includes a protective cylinder (3), and a positioning cylinder (4) is fitted on the outer wall of the protective cylinder (3). The positioning rib (21) is fixed to the outer wall of the positioning cylinder (4). The outer wall of the protective cylinder (3) has an annular mounting groove (31). The inner wall of the positioning cylinder (4) has a mounting protrusion (41) that cooperates with the mounting groove (31). The mounting protrusion (41) has a mounting inclined surface (411) on the side facing the socket (2). The end of the mounting protrusion (41) away from the mounting inclined surface (411) has a contact plane (412) parallel to the side wall of the mounting groove (31).

2. The anti-mismating connector according to claim 1, characterized in that: The end of the positioning cylinder (4) is provided with a limiting ring (42). The inner diameter of the limiting ring (42) is greater than the inner diameter of the protective cylinder (3) and less than the outer diameter of the protective cylinder (3). When the contact plane (412) contacts the side wall of the mounting groove (31), the limiting ring (42) contacts the end face of the protective cylinder (3).

3. The anti-mismating connector according to claim 2, characterized in that: The mounting protrusions (41) are provided in multiple and are evenly distributed circumferentially on the inner wall of the protective cylinder (3).

4. The anti-mismating connector according to claim 1, characterized in that: The socket (2) is provided with a conductive rod (5) located in the inner ring of the protective cylinder (3). The end of the conductive rod (5) is equipped with an anti-arc cap (6). The end of the conductive rod (5) is provided with a conical mounting head (51) that passes through the inner ring of the anti-arc cap (6). An annular connecting groove (52) is formed between the mounting head (51) and the conductive rod (5). The inner wall of the end of the anti-arc cap (6) facing the conductive rod (5) is provided with several connecting protrusions (61) for being embedded in the connecting groove (52).

5. The anti-mismating connector according to claim 4, characterized in that: The socket (2) is fixed with a support platform (7) for supporting the conductive rod (5). The support platform (7) is tapered. The diameter of the end of the support platform (7) facing the anti-arc cap (6) is smaller than the diameter of the other end. The support platform (7) is provided with several deformation grooves (71). The outer wall of the conductive rod (5) is fixed with a limiting piece (53) that is embedded in the end of the support platform (7) with a smaller diameter. The diameter of the limiting piece (53) is smaller than the inner diameter of the end of the support platform (7) away from the anti-arc cap (6) and larger than the inner diameter of the end of the support platform (7) close to the anti-arc cap (6).

6. The anti-mismating connector according to claim 1, characterized in that: The plug (1) is provided with a handle (13) at its lower end, and a gripping step surface (14) is provided at the connection between the plug (1) and the handle (13).

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