A wiring harness terminal boot assembly

Abstract

The application relates to a wire harness terminal sheath assembly, relates to the technical field of terminal assembly, and comprises a shell, a plurality of mounting holes are arranged side by side on one side of the shell; a fixed plate is arranged outside the shell, a limiting rod and an extension plate are fixed side by side on one side of the fixed plate, a limiting hole with an axis perpendicular to the axis of the mounting hole is arranged on the shell, and the limiting hole communicates the plurality of mounting holes with each other; static friction force exists between the limiting rod and the inner wall of the limiting hole, one side of the extension plate abuts against the outer side surface of the shell after the limiting rod is inserted into the inside of the limiting hole; a clamping hook is fixed on the side surface of the extension plate close to the shell, a clamping groove for clamping the clamping hook is arranged on the outer side surface of the shell, and the extension plate can make the clamping hook out of the clamping groove after elastic deformation; in the application, the convenience of pre-assembly is retained, and the problem that the retaining piece is easy to lose is avoided.

Description

Technical Field

[0001] This application relates to the technical field of terminal assembly, and in particular to a wire harness terminal sheath assembly. Background Technology

[0002] Wire harness terminal sheath assemblies are key components in electrical connection systems, consisting of wire harnesses, terminals, sheaths, and auxiliary accessories. The wire harness is responsible for transmitting power or signals, the terminals ensure reliable connections between wires, and the sheath provides physical protection and insulation.

[0003] In the prior art, a typical terminal sleeve assembly design includes two parts: a sleeve housing and a retainer. The sleeve housing has several mounting through holes for inserting terminals; the retainer includes a main body and several push rods formed on the main body. The number of push rods matches the number of mounting through holes, and the terminals are limited by inserting them into the through holes to prevent them from falling out.

[0004] Currently, there are two main assembly methods: One is to store the sheath and retainer completely separately and then temporarily assemble them when needed. While this avoids potential problems from pre-assembly, it easily leads to confusion about specifications or missing parts during transport, affecting assembly efficiency. The second method is to pre-assemble the sheath and retainer before transport. Although this reduces errors during transport, the retainer must be removed before formal assembly, and then reinstalled after the terminal is inserted. This is cumbersome, and the retainer is prone to being lost, increasing usage costs. Both methods have drawbacks and room for improvement. Summary of the Invention

[0005] The purpose of this application is to provide a wire harness terminal sheath assembly that solves the problem in the above-mentioned related technologies that the installation of the retainer is not only cumbersome, but also prone to loss.

[0006] The wire harness terminal sheath assembly provided in this application adopts the following technical solution:

[0007] A wire harness terminal sheath assembly includes a housing with a plurality of mounting holes arranged side-by-side on one side. A fixing plate is provided on the exterior of the housing, and a limiting rod and an extension plate are fixed side-by-side on one side of the fixing plate. A limiting hole with its axis perpendicular to the axis of the mounting holes is provided on the housing, and the limiting hole connects the plurality of mounting holes to each other. Static friction exists between the limiting rod and the inner wall of the limiting hole. One side of the extension plate abuts against the outer side of the housing after the limiting rod is inserted into the limiting hole. A hook is fixed on the side of the extension plate near the housing, and a slot is provided on the outer side of the housing for the hook to engage. The extension plate can elastically deform to disengage the hook from the slot.

[0008] By adopting the above technical solution, on the one hand, by utilizing the static friction between the limiting rod and the limiting hole, the terminal can be installed without completely removing the limiting rod from the limiting hole during pre-installation, simplifying the operation process and improving assembly efficiency. On the other hand, the engagement of the hook on the extension plate with the slot on the housing ensures a secure connection between the retainer and the housing, effectively preventing the retainer from being lost. Simultaneously, the extension plate allows the hook to disengage from the slot after elastic deformation, facilitating the disassembly of the retainer. This design retains the convenience of pre-assembly while avoiding the problem of easily lost retainers.

[0009] Optionally, a limiting hook that is elastically deformable and facing the extension plate is fixed on the outer periphery of the end of the limiting rod away from the fixed plate. A clearance groove is provided on the limiting rod for the limiting hook to be inserted after elastic deformation. A guide groove is provided on the inner wall of the limiting hole of the housing, extending to the opening of the limiting hole, for the limiting hook to be engaged and slid.

[0010] By adopting the above technical solution, the limiting hook can be smoothly pressed into the relief groove when inserted into the limiting hole, and can return to its original position and slide in the guide groove after full insertion. This design not only enhances the connection stability between the limiting rod and the limiting hole, effectively preventing the limiting rod from accidentally coming out, but also ensures the accuracy and smoothness of the limiting rod insertion through the guiding effect of the guide groove.

[0011] Optionally, the outer side of the limiting hook near the limiting rod is a first arc surface.

[0012] By adopting the above technical solution, during the insertion of the limiting rod into the limiting hole, the first arc surface can form a smooth contact surface with the inner wall of the limiting hole opening. When the end of the limiting rod is initially inserted into the opening of the limiting hole, the first arc surface can guide the limiting hook to be pressed more smoothly into the relief groove along the guide slope of the guide groove on the housing, reducing friction and resistance during insertion, making the insertion operation easier and less strenuous.

[0013] Optionally, a stop block is fixed on the inner wall of the housing near the opening of the limiting hole in the guide groove.

[0014] By adopting the above technical solution, when the limiting rod is inserted into the limiting hole and the limiting hook is reset and locked into the guide groove, the stop block can block the limiting hook. This design greatly reduces the possibility of the limiting rod accidentally coming out of the limiting hole during normal use, enhances the stability of the connection between the limiting rod and the limiting hole, and effectively ensures the structural integrity of the wire harness terminal sheath assembly.

[0015] Optionally, a guide slope is fixed on the side edge of the stop block facing the opening of the limiting hole.

[0016] By adopting the above technical solution, when the limiting rod is inserted into the limiting hole, the limiting hook will first contact the guide slope. The guide slope can effectively guide the limiting hook, allowing it to be smoothly pressed into the relief groove on the limiting rod along the slope. This avoids the limiting hook getting stuck or colliding with the stop during insertion, thereby reducing the difficulty of inserting the limiting rod and making the insertion operation smoother and less strenuous.

[0017] Optionally, a positioning plate is fixed on the side of the limiting rod facing the opening of the mounting hole, and the positioning plate is parallel to the length direction of the limiting rod.

[0018] By adopting the above technical solution, the positioning plate can more accurately lock the installed terminals, effectively preventing the terminals from becoming loose or shifting in the mounting holes, greatly enhancing the stability of the terminal installation and ensuring the reliability of the electrical connection.

[0019] Optionally, the positioning plate has a first inclined surface on the side edge away from the limiting rod.

[0020] By adopting the above technical solution, the first inclined surface can play a good guiding role, which can make the limiting rod and the positioning plate move more smoothly along the inclined surface to the correct installation position, reduce the risk of collision or jamming between the terminal and the positioning plate, reduce the possible damage to the terminal during the installation process, and improve the efficiency and quality of terminal installation.

[0021] Optionally, a reinforcing rib is fixed at the joint between the fixed plate and the extension plate.

[0022] By adopting the above technical solution, the joint between the fixed plate and the extension plate, as a stress concentration area, can effectively improve the bending and torsional resistance of this part by fixing reinforcing ribs. During assembly or use, the reinforcing ribs can disperse stress and prevent the joint from breaking or deforming due to external forces, thereby extending the service life of the component.

[0023] In summary, this application includes the following beneficial technical effects:

[0024] On the one hand, by utilizing the static friction between the limiting rod and the limiting hole, the terminal can be installed without completely removing the limiting rod from the limiting hole during pre-installation, simplifying the operation process and improving assembly efficiency. On the other hand, the engagement of the hook on the extension plate with the slot on the housing ensures a secure connection between the retainer and the housing, effectively preventing the retainer from being lost. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0027] Figure 2 This is an exploded structural diagram of an embodiment of this application;

[0028] Figure 3 This is a partial cross-sectional view of an embodiment of the present application illustrating the installation and fit of the housing and the retainer;

[0029] Figure 4 yes Figure 3 An enlarged schematic diagram of part A in the middle;

[0030] Figure 5 yes Figure 3 Enlarged schematic diagram of part B;

[0031] Figure 6 This is a partial structural diagram illustrating the installation and distribution of reinforcing ribs and positioning plates in an embodiment of this application.

[0032] In the figure, 1 is the housing; 11 is the mounting hole; 12 is the limiting hole; 13 is the slot; 14 is the stop block; 141 is the guide slope; 15 is the guide groove; 2 is the retaining component; 21 is the fixing plate; 22 is the limiting rod; 221 is the limiting hook; 2211 is the first arc surface; 222 is the clearance groove; 23 is the extension plate; 231 is the hook; 232 is the reinforcing rib; 24 is the positioning plate; and 241 is the first slope. Detailed Implementation

[0033] The present application will be further described in detail below with reference to all the accompanying drawings.

[0034] Example:

[0035] Reference Figure 1 , Figure 2 and Figure 3 A wire harness terminal sheath assembly includes a housing 1, wherein a plurality of mounting holes 11 are arranged side by side on one side of the housing 1; a retaining member 2 is provided on the outside of the housing 1, and the retaining member 2 includes a fixing plate 21, a limiting rod 22 and an extension plate 23 are fixed side by side on one side of the fixing plate 21, a limiting hole 12 is provided on the housing 1 with its axis perpendicular to the axis of the mounting holes 11, and the limiting hole 12 connects the plurality of mounting holes 11 to each other; a hook 231 is integrally formed on the side of the extension plate 23 near the limiting rod 22, and a groove 13 is provided on the outer side of the housing 1;

[0036] After assembly, the limiting rod 22 is fully inserted into the limiting hole 12, while the extension plate 23 is located outside the housing 1. At this time, one side of the extension plate 23 abuts against the outer side of the housing 1, and the hook 231 on the extension plate 23 is inserted into the corresponding slot 13. The extension plate 23 can release the hook 231 from the slot 13 after elastic deformation.

[0037] In the pre-installation state, first disengage the hook 231 from the slot 13, then move a portion of the limiting rod 22 out of the limiting hole 12. Since there is static friction between the limiting rod 22 and the inner wall of the limiting hole 12, the terminal can be installed without completely removing the limiting rod 22.

[0038] Reference Figure 3 , Figure 4 and Figure 5 The limiting rod 22 is fixed with a limiting hook 221 that can elastically deform and is directed toward the extension plate 23 on the outer periphery of the end away from the fixed plate 21. The limiting rod 22 is provided with a relief groove 222 for the limiting hook 221 to be inserted after elastic deformation, and the outer side of the limiting hook 221 near the limiting rod 22 is the first arc surface 2211.

[0039] The housing 1 has a guide groove 15 extending to the opening of the limiting hole 12 on the inner wall of the limiting hole 12, for the limiting hook 221 to be inserted and slide. A stop block 14 is fixed on the inner wall of the guide groove 15 near the opening of the limiting hole 12, and a guide slope 141 is fixed on the side edge of the stop block 14 facing the opening of the limiting hole 12.

[0040] When the end of the limiting rod 22 is initially inserted into the opening of the limiting hole 12, the limiting hook 221 is pressed into the relief groove 222 along the guide slope 141 until the end of the limiting rod 22 is fully inserted into the limiting hole 12. At this time, the limiting hook 221 is reset and slides into the guide groove 15, thereby reducing the possibility of the limiting rod 22 coming out again after being inserted into the limiting hole 12.

[0041] Reference Figure 6 A reinforcing rib 232 is integrally formed on the inner side of the joint between the fixing plate 21 and the extension plate 23 to improve the structural stability of the joint; the limiting rod 22 faces the mounting hole 11 (see... Figure 1 A positioning plate 24 is fixedly provided on the side of the opening, and a first inclined surface 241 is provided on the side edge of the positioning plate 24 away from the limiting rod 22. The positioning plate 24 is parallel to the length direction of the limiting rod 22. When the limiting rod 22 is fully inserted into the limiting hole 12 (see...), a positioning plate 24 is fixedly provided on the side of the opening, and a first inclined surface 241 is provided on the side edge of the positioning plate 24 away from the limiting rod 22. The positioning plate 24 is parallel to the length direction of the limiting rod 22. Figure 3 After that, the positioning plate 24 is used to further lock the installed terminals.

[0042] The implementation principle of this application embodiment is as follows:

[0043] During assembly, the limiting rod 22 is inserted into the limiting hole 12 of the housing 1. When inserted into the limiting hole 12, the limiting hook 221 is pressed into the relief groove 222 along the guide slope 141. After being fully inserted, it is reset and locked into the guide groove 15. The extension plate 23 abuts against the outer side of the housing 1 and the hook 231 is locked into the slot 13, thus completing the assembly and fixing.

[0044] During pre-installation, force is first applied to cause the extension plate 23 to deform elastically, so that the hook 231 is dislodged from the slot 13, and then the limiting rod 22 is moved outward. At this time, due to the combination of the limiting hook 221, the guide groove 15 and the stop block 14, the limiting rod 22 is prevented from directly dislodging from the limiting hole 12.

[0045] Unless otherwise defined, the terms or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar words used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "a" or "one," and similar words do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising," "including," and similar words mean that the element or object preceding "comprising" encompasses the element or object listed following "comprising" or "including," and their equivalents, but do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0046] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A wire harness terminal sheath assembly, comprising a housing (1), wherein a plurality of mounting holes (11) are arranged side-by-side on one side of the housing (1); characterized in that, The outer side of the housing (1) is provided with a fixing plate (21). On one side of the fixing plate (21), a limiting rod (22) and an extension plate (23) are fixed side by side. The housing (1) is provided with a limiting hole (12) whose axis is perpendicular to the axis of the mounting hole (11). The limiting hole (12) connects several mounting holes (11) to each other. There is static friction between the limiting rod (22) and the inner wall of the limiting hole (12). One side of the extension plate (23) abuts against the outer side of the housing (1) after the limiting rod (22) is inserted into the limiting hole (12). A hook (231) is fixed on the side of the extension plate (23) near the housing (1). A slot (13) for the hook (231) to be inserted is opened on the outer side of the housing (1). The extension plate (23) can release the hook (231) from the slot (13) after elastic deformation.

2. The wire harness terminal sheath assembly according to claim 1, characterized in that, The limiting rod (22) is fixed with a limiting hook (221) facing the extension plate (23) and capable of elastic deformation on the outer periphery of the end away from the fixed plate (21). The limiting rod (22) is provided with a relief groove (222) for the limiting hook (221) to be inserted after elastic deformation. The housing (1) is provided with a guide groove (15) on the inner wall of the limiting hole (12) extending to the opening of the limiting hole (12) for the limiting hook (221) to be inserted and slide.

3. A wire harness terminal sheath assembly according to claim 2, characterized in that, The outer side of the limiting hook (221) near the limiting rod (22) is the first arc surface (2211).

4. A wire harness terminal sheath assembly according to claim 2, characterized in that, The housing (1) has a stop (14) fixed on the inner wall of the guide groove (15) near the opening of the limiting hole (12).

5. A wire harness terminal sheath assembly according to claim 4, characterized in that, The stop block (14) has a guide slope (141) fixed on the side edge facing the opening of the limiting hole (12).

6. A wire harness terminal sheath assembly according to claim 1, characterized in that, A positioning plate (24) is fixed on the side of the limiting rod (22) facing the opening of the mounting hole (11), and the positioning plate (24) is parallel to the length direction of the limiting rod (22).

7. A wire harness terminal sheath assembly according to claim 6, characterized in that, The positioning plate (24) has a first inclined surface (241) on its side edge away from the limiting rod (22).

8. A wire harness terminal sheath assembly according to claim 1, characterized in that, A reinforcing rib (232) is fixed at the joint between the fixed plate (21) and the extension plate (23).

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