A split-type connector tail cap and connector

Abstract

This application discloses a split-type connector tail cover and connector. The tail cover is located at the tail end of the connector and includes a cylindrical shell formed by two symmetrical cover bodies that are radially snapped together. U-shaped grooves and arc-shaped grooves are distributed axially on the cover bodies. The U-shaped grooves of the two cover bodies radially meet to form an open end for wrapping around the connector's outer periphery, and the arc-shaped grooves of the two cover bodies radially meet to form a wire hole end for wrapping around the wire harness's outer periphery. The cover bodies are fixedly connected by a radial snap-fit ​​structure, and the assembled cylindrical shell forms an axial snap-fit ​​fit with the connector. This split-type tail cover is easy to disassemble and replace, and in the event of failure, it can minimize rework and scrap costs, and can be widely used in various connectors and their wire harnesses.

Description

Technical Field

[0001] This application relates to the field of connector technology, and in particular to a split connector tail cap and connector. Background Technology

[0002] With the rapid rise and promotion of new energy vehicles, various on-board chargers and on-board converter systems are gradually increasing, and high-voltage connectors and their wiring harnesses play an irreplaceable role in these systems. Currently, in order to improve the vibration resistance of connectors, they are usually equipped with tail caps. The tail caps can provide a certain degree of constraint on the connector's wiring and can tightly fix the wiring harness and connector.

[0003] However, during the assembly and handling of the wire harness, the connector end cap may be scratched to varying degrees, or even broken and damaged. Traditional one-piece end caps, because they are fitted onto the wire harness, cannot be disassembled and replaced in a timely manner. Once the end cap is damaged, the entire high-voltage wire harness may be scrapped.

[0004] Therefore, how to provide a tail cap that is easy to disassemble and replace is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this application is to provide a split connector tail cover and connector. The split tail cover is easy to disassemble and replace, and can minimize rework and scrap costs in the event of failure. It can be widely used in various connectors and their wire harnesses.

[0006] To achieve the above objectives, this application provides a split connector tail cover, disposed at the tail end of the connector, comprising a cylindrical shell formed by two symmetrical cover bodies radially snapped together. The cover bodies have U-shaped grooves and arc-shaped grooves distributed axially. The U-shaped grooves of the two cover bodies radially abut to form an open end for wrapping around the outer periphery of the connector, and the arc-shaped grooves of the two cover bodies radially abut to form a wire hole end for wrapping around the outer periphery of the wire harness. The cover bodies are fixedly connected by a radial snap-fit ​​structure, and the assembled cylindrical shell forms an axial snap-fit ​​fit with the connector.

[0007] Preferably, the radial locking structure includes a hook disposed on one edge of the cover and a corresponding groove disposed on the other edge of the cover, wherein the hook and the groove cooperate to achieve radial locking.

[0008] Preferably, the hook and the slot are located on the outer walls of the two arc-shaped grooves at the end of the wire hole; and / or,

[0009] The hook and the slot are respectively located on the outer walls of the two U-shaped grooves at the open end.

[0010] Preferably, the hook is located on both sides of one of the arc-shaped grooves at the end of the wire hole, and the other arc-shaped groove at the end of the wire hole has elastic arms extending towards the hook on both sides, with the locking groove formed on the elastic arms; and / or,

[0011] The hook is located on both sides of one of the U-shaped grooves at the opening end, and the other U-shaped groove at the opening end is provided with spring arms extending toward the hook, and the spring arms are provided with the slots.

[0012] Preferably, the end of the hook is provided with a wedge-shaped guide surface, and the inner wall of the slot is provided with a limiting step that cooperates with the wedge-shaped guide surface. The limiting step is radially engaged with the bearing surface at the root of the wedge-shaped guide surface.

[0013] Preferably, the axial snap-fit ​​includes a protrusion at the tail end of the connector, and the inner wall of the cylindrical housing is provided with a groove that mates with the protrusion. The protrusion and the groove are engaged in an axial upper limit snap-fit.

[0014] Preferably, the direction in which the protrusion enters the groove is consistent with the radial abutment direction of the two covers.

[0015] Preferably, the protrusion is located on the side of the connector facing the bottom of the U-shaped groove, and the protrusion extends along the radial mating direction of the two covers;

[0016] The protrusions on both sides of the connector correspond to the two U-shaped grooves respectively, and the protrusions on both sides are arranged asymmetrically.

[0017] Preferably, the protrusion is located on the outer wall of the connector corresponding to the two U-shaped walls of the U-shaped groove, and the U-shaped walls of the two U-shaped grooves are radially joined to form the slot for wrapping around the outer periphery of the protrusion.

[0018] A connector comprising the split connector tail cap as described in any of the preceding claims.

[0019] The beneficial effects of this application are that the tail cover is set as a cylindrical shell formed by two symmetrical cover bodies radially snapped together. The U-shaped grooves of the two cover bodies can be radially connected to wrap around the outer periphery of the connector tail end. The arc-shaped grooves of the two cover bodies can also be radially connected to wrap around the outer periphery of the wire harness. When disassembling the tail cover, it is only necessary to separate the two cover bodies radially. There is no constraint on the tail cover by the wire harness and connector in the radial direction, which facilitates the disassembly and replacement of the tail cover. When installing the tail cover, the two cover bodies are spliced ​​radially and a stable connection between the two cover bodies is achieved through a radial snap-fit ​​structure. After the two cover bodies are assembled to form a cylindrical shell, the cylindrical shell forms an axial snap-fit ​​with the connector, so that the tail cover can be stably installed at the tail end of the connector. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in 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 embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the assembly structure of the split connector tail cover and connector provided in the embodiments of this application;

[0022] Figure 2 This is a schematic diagram of the split connector tail cover structure provided in the embodiments of this application;

[0023] Figure 3 This is a schematic diagram of the split connector tail cover provided in an embodiment of this application from another perspective.

[0024] In the diagram: 1-Connector; 2-Tail cap; 3-Wire harness;

[0025] 11-Protrusion;

[0026] 21-Arc-shaped groove; 22-U-shaped groove; 23-Elastic arm; 24-Card slot; 25-Card hook; 26-Groove. Detailed Implementation

[0027] 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. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] It should be noted that in this embodiment, the orientation or positional relationship indicated by terms such as "upper," "lower," "front," and "rear" is based on the orientation or positional relationship shown in the accompanying drawings. It is used only for the convenience of describing this application and for simplifying the description, and does 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, it should not be construed as a limitation of this application. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figures 1 to 3As shown, in this embodiment, a split connector tail cover is provided. The tail cover 2 is disposed at the tail end of the connector 1. The tail cover 2 includes a cylindrical shell formed by two symmetrical cover bodies being radially snapped together. One end of the cylindrical shell has an open end, and the other end has a wire hole end. The open end can be sleeved on the outer periphery of the connector 1 to realize the connection with the connector 1. The wire harness 3 on the connector 1 can pass through the wire hole end.

[0031] U-shaped grooves 22 and arc-shaped grooves 21 are distributed axially on the cover. When the two covers are radially joined to form a cylindrical shell, the U-shaped grooves 22 on the two covers will also be radially joined, so that the two U-shaped grooves 22 form open ends for wrapping around the outer periphery of the connector 1. Similarly, the arc-shaped grooves 21 on the two covers will also be radially joined, so that the two arc-shaped grooves 21 form wire hole ends for wrapping around the outer periphery of the wire harness 3.

[0032] Since both the open end and the wire hole end are formed by radial mating, the radial movement of the two covers is not constrained by the wire harness 3 and the connector 1, whether the two covers are mating or separating, thus allowing the two covers to be easily disassembled and replaced.

[0033] The two covers are fixedly connected by a radial snap-fit ​​mechanism to ensure the stability of the cylindrical shell; and after the two covers form a cylindrical shell, the cylindrical shell and connector 1 form an axial snap-fit ​​fit to ensure the stability of the cylindrical shell relative to connector 1.

[0034] In summary, this application sets the tail cover 2 as a cylindrical shell formed by two symmetrical cover bodies radially snapped together. The U-shaped grooves 22 of the two cover bodies can be radially connected to wrap around the outer periphery of the tail end of the connector 1. The arc-shaped grooves 21 of the two cover bodies can also be radially connected to wrap around the outer periphery of the wire harness 3. When disassembling the tail cover 2, it is only necessary to separate the two cover bodies radially. The tail cover 2 is not constrained by the wire harness 3 and the connector 1 in the radial direction, which facilitates the disassembly and replacement of the tail cover 2. When installing the tail cover 2, the two cover bodies are radially spliced ​​together, and the two cover bodies are stably connected by a radial snap-fit ​​structure. After the two cover bodies are assembled to form a cylindrical shell, the cylindrical shell is axially snapped with the connector 1, so that the tail cover 2 can be stably installed at the tail end of the connector 1.

[0035] In some embodiments, the radial locking structure includes a hook 25 disposed on the edge of one cover and a corresponding groove 24 disposed on the edge of the other cover. When the two covers are radially connected, the hook 25 and the groove 24 on the two covers are also radially connected. When the two covers are in place, the hook 25 engages with the groove 24, thereby achieving radial locking of the two covers.

[0036] The hooks 25 and slots 24 can be arranged on the cover in various ways. For example, multiple hooks 25 can be distributed on the edge of one cover, and multiple slots 24 can be distributed on the edge of another cover; or the hooks 25 and slots 24 can be distributed on the edge of one cover, and the slots 24 and hooks 25 can be distributed on the edge of another cover, so as to ensure that the hooks 25 and slots 24 can be matched. All of these fall within the protection scope of this application.

[0037] Furthermore, the hook 25 and the groove 24 can be respectively set on the outer wall of the two arc-shaped grooves 21 at the end of the wire hole. Similarly, the hook 25 and the groove 24 can also be located on the outer wall of the two U-shaped grooves 22 at the end of the opening, thereby improving the radial connection strength between the end of the wire hole and the end of the opening and avoiding local damage to the end of the wire hole and the end of the opening due to external force.

[0038] Based on this, in order to ensure the radial connection stability of the two arc-shaped grooves 21 and the radial connection stability of the two U-shaped grooves 22, the hook 25 can be set on both sides of one arc-shaped groove 21 at the end of the wire hole, and the other arc-shaped groove 21 at the end of the wire hole is provided with a spring arm 23 extending towards the hook 25, and the spring arm 23 is provided with a slot 24; and / or, the hook 25 is located on both sides of one U-shaped groove 22 at the opening end, and the other U-shaped groove 22 at the opening end is provided with a spring arm 23 extending towards the hook 25, and the spring arm 23 is provided with a slot 24.

[0039] Conversely, the slot 24 can also be set on both sides of an arc-shaped groove 21 at the end of the wire hole, and a hook 25 can be set on the spring arm 23 accordingly, which can also achieve the radial locking effect; similarly, the slot 24 can also be located on both sides of a U-shaped groove 22 at the open end, and a hook 25 can be set on the spring arm 23 accordingly.

[0040] In addition, hooks 25 and spring arms 23 (with slots 24 on the spring arms 23) can be provided on both sides of an arc groove 21 at the end of the wire hole, or slots 24 and spring arms 23 (with hooks 25 on the spring arms 23) can be provided on both sides of an arc groove 21 at the end of the wire hole; corresponding slots 24 and hooks 25 can be provided on both sides of the other arc groove 21 at the end of the wire hole.

[0041] It should be noted that there can be one or more arc-shaped grooves 21 on one cover, and the number of arc-shaped grooves 21 on the other cover should correspond accordingly. Furthermore, the above-mentioned setting of hooks 25 and slots 24 can be applied to the two arc-shaped grooves 21 at each end of the wire hole.

[0042] The spring arm 23 has a certain elasticity. A wedge-shaped guide surface is provided at the end of the hook 25. The inner wall of the slot 24 is provided with a limiting step that cooperates with the wedge-shaped guide surface. When the two covers are radially connected, the wedge-shaped guide surface will contact the limiting step of the slot 24. The wedge-shaped guide surface decomposes the insertion force into a radial expansion component, forcing the spring arm 23 to elastically deform. After the hook 25 passes the limiting step, the spring arm 23 rebounds, so that the limiting step is radially engaged with the bearing surface at the root of the wedge-shaped guide surface, forming a mechanical interlock and bearing the radial tension.

[0043] The cylindrical housing and connector 1 are axially engaged, including a protrusion 11 at the tail end of connector 1 and a groove 26 on the inner wall of the cylindrical housing that mates with the protrusion 11. After the two covers are assembled to form the cylindrical housing, the protrusion 11 can be engaged with the groove 26 in the axial direction, thereby achieving a stable connection between the cylindrical housing and connector 1.

[0044] Furthermore, to avoid the engagement effect of the protrusion 11 and the groove 26 affecting the radial docking of the two covers, the direction in which the protrusion 11 enters the groove 26 can be consistent with the radial docking direction of the two covers. That is, during the radial docking process of the two covers, the protrusion 11 can automatically extend into the groove 26, thereby achieving axial limiting engagement, so that the setting of the protrusion 11 will not affect the radial movement of the covers.

[0045] Based on this, the protrusion 11 can be located on the side of the connector 1 facing the bottom of the U-shaped groove 22. The protrusion 11 extends along the radial mating direction of the two covers to avoid radial interference between the protrusion 11 and the covers. Protrusions 11 corresponding to the bottoms of the two U-shaped grooves 22 can be respectively provided on both sides of the connector 1, so that both covers can be axially engaged with the connector 1, ensuring a stable connection between the cylindrical shell and the connector 1. Furthermore, the protrusions 11 on the sides of the connector 1 corresponding to the bottoms of the two U-shaped grooves 22 can be irregularly or asymmetrically distributed to achieve a foolproof effect and prevent incorrect assembly of the two covers.

[0046] The protrusion 11 can also be located on the outer wall of the connector 1 and the two U-shaped walls of the U-shaped groove 22. The U-shaped walls of the two U-shaped grooves 22 are radially connected to form a groove 26 for wrapping around the outer periphery of the protrusion 11, which can improve the axial connection effect between the cylindrical shell and the connector 1. At the same time, this method can avoid radial interference between the protrusion 11 and the cover.

[0047] This application also provides a connector 1, which includes a wire harness 3 and the aforementioned split connector tail cap 2.

[0048] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0049] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A split connector tail cover, provided at the tail end of a connector (1), characterized in that, The device includes a cylindrical shell consisting of two symmetrical caps that are radially snapped together. The caps have U-shaped grooves (22) and arc-shaped grooves (21) distributed axially. The U-shaped grooves (22) of the two caps are radially joined to form an open end for wrapping around the outer periphery of the connector (1), and the arc-shaped grooves (21) of the two caps are radially joined to form a wire hole end for wrapping around the outer periphery of the wire harness (3). The caps are fixedly connected by a radial snap-fit ​​structure, and the assembled cylindrical shell and the connector (1) form an axial snap-fit ​​fit.

2. The split connector tail cover of claim 1, wherein, The radial locking structure includes a hook (25) on one edge of the cover and a corresponding groove (24) on the other edge of the cover. The hook (25) and the groove (24) cooperate to achieve radial locking.

3. The split connector tail cover of claim 2, wherein, The hook (25) and the slot (24) are respectively located on the outer walls of the two arc-shaped grooves (21) at the end of the wire hole; and / or, The hook (25) and the slot (24) are respectively located on the outer walls of the two U-shaped grooves (22) at the opening end.

4. The split connector tail cover of claim 3, wherein, The hook (25) is located on both sides of one of the arc-shaped grooves (21) at the end of the wire hole, and on both sides of the other arc-shaped groove (21) at the end of the wire hole, there are spring arms (23) extending toward the hook (25), and the spring arms (23) are provided with the slots (24); and / or, The hook (25) is located on both sides of one of the U-shaped grooves (22) at the opening end, and the other U-shaped groove (22) at the opening end is provided with spring arms (23) extending toward the hook (25), and the spring arms (23) are provided with the slots (24).

5. The split connector tail cover of claim 2, wherein, The end of the hook (25) is provided with a wedge-shaped guide surface, and the inner wall of the slot (24) is provided with a limiting step that cooperates with the wedge-shaped guide surface. The limiting step is radially engaged with the bearing surface at the root of the wedge-shaped guide surface.

6. The split connector tail cover of any of claims 1-5, wherein, The axial snap-fit ​​includes a protrusion (11) at the tail end of the connector (1), and a groove (26) corresponding to the protrusion (11) is provided on the inner wall of the cylindrical housing. The protrusion (11) and the groove (26) are engaged in an axial upper limit snap-fit.

7. The split connector tail cover of claim 6, wherein, The direction in which the protrusion (11) enters the groove (26) is consistent with the radial docking direction of the two covers.

8. The split connector tail cover of claim 7, wherein, The protrusion (11) is located on the side of the connector (1) facing the bottom of the U-shaped groove (22), and the protrusion (11) extends along the radial mating direction of the two covers; The protrusions (11) on both sides of the connector (1) correspond to the two U-shaped grooves (22) respectively, and the protrusions (11) on both sides are asymmetrically arranged.

9. The split connector tail cover of claim 6, wherein, The protrusion (11) is located on the outer wall of the connector (1) and the two U-shaped walls of the U-shaped groove (22), and the U-shaped walls of the two U-shaped grooves (22) are radially joined to form the groove (26) for wrapping around the outer periphery of the protrusion (11).

10. A connector characterized by comprising: Includes the split connector tail cap (2) as described in any one of claims 1-9.

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