A wire protection sleeve and housing connecting structure
Patent Information
- Application Number
- CN202522576749.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-04
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-12-04
AI Technical Summary
[0003]然而，在实际应用中，现有的护线套与壳体的连接方式存在明显缺陷
[0021]本实用新型提供一种护线套与壳体连接结构，其中，线缆穿设于护线套的穿线孔，当护线套与壳体组件组装时，护线套穿设于连接孔，且护线套的一侧嵌设于第一半圆槽内，护线套的两个连接筋搭接于连接凸台，然后将压紧箍压接于护线套的另一侧，螺钉穿设于第一通孔、第二通孔并螺纹连接于螺纹孔。一方面，螺钉、压紧箍、连接筋和连接凸台协同配合完成机械锁紧，提供可靠轴向夹紧力，防止护线套脱离壳体组件，提高了连接稳固性；另一方面，压紧箍和第一半圆槽夹紧护线套，进而使穿线孔的内壁抵紧线缆，线缆与穿线孔的摩擦力增大，进而防止线缆相对护线套沿第一方向窜动。
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Figure CN224923339U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable protection technology, and in particular to a connection structure between a cable sheath and a housing. Background Technology
[0002] In numerous fields such as industrial control equipment, communication terminals, and automotive electronic systems, cables play an indispensable role as key components for signal and power transmission. To protect cables from external environmental interference and mechanical damage, they are typically run through sheaths attached to a housing.
[0003] However, in practical applications, the existing connection method between the cable sheath and the housing has significant defects. After prolonged use, due to frequent vibrations, temperature changes, and external forces, the connection between the cable sheath and the housing gradually loosens, eventually leading to their separation. This not only damages the cable's protective structure, exposing it directly to harsh environments and accelerating its aging and damage, but may also cause serious problems such as signal transmission interruptions and unstable power supply. Simultaneously, the cable is prone to shifting relative to the sheath, further exacerbating cable wear, reducing the reliability and stability of the entire system, and posing a significant threat to the normal operation of the equipment.
[0004] Therefore, there is an urgent need for a connection structure between the cable sheath and the housing to solve the aforementioned problems. Utility Model Content
[0005] Based on the above, the purpose of this utility model is to provide a connection structure between the cable sheath and the housing, to prevent the cable sheath from detaching from the housing assembly, improve the connection stability, and prevent the cable from moving relative to the cable sheath along the first direction.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A cable sheath and housing connection structure, comprising:
[0008] A housing assembly having a connecting hole, and a connecting boss having a first semi-circular groove on the inner wall of the housing assembly.
[0009] A wire harness assembly includes a wire sheath and a cable. The wire sheath has a through hole through which the cable passes. The wire sheath passes through the through hole and extends into the housing assembly through the connection hole. The outer wall of the wire sheath is symmetrically provided with two connecting ribs extending along a first direction, which is the axial direction of the wire sheath. One side of the wire sheath is embedded in the first semi-circular groove, and the two connecting ribs overlap the connecting protrusion.
[0010] A clamping hoop is provided to press the other side of the cable sleeve. The clamping hoop has a first through hole at each end, the connecting rib has a second through hole, and the connecting boss has a threaded hole. The first through hole, the second through hole, and the threaded hole are correspondingly arranged. A screw passes through the first through hole and the second through hole and is threaded into the threaded hole, so that the clamping hoop and the first semi-circular groove clamp the cable sleeve.
[0011] As a preferred technical solution for the connection structure between the cable sheath and the housing, the side wall of the first semi-circular groove is provided with a first arc rib, and the first arc rib clamps the cable sheath with the clamping hoop.
[0012] As a preferred technical solution for the connection structure between the cable sheath and the housing, there are two first arc ribs, which are spaced apart along the first direction, and the clamping hoop is directly opposite the gap between the two first arc ribs.
[0013] As a preferred technical solution for the connection structure between the cable sheath and the housing, the clamping hoop is provided with a second arc rib on the side near the cable sheath.
[0014] As a preferred technical solution for the connection structure between the cable sheath and the housing, the inner wall of the connection hole is provided with an annular groove, and the outer wall of the cable sheath is provided with an annular boss, which is engaged with the annular groove.
[0015] As a preferred technical solution for the connection structure between the cable sheath and the housing, the annular boss and the annular slot are interference-fitted.
[0016] As a preferred technical solution for the connection structure between the cable sheath and the housing, the cable sheath is provided with a plurality of buffer groove groups on the side wall outside the housing assembly. The plurality of buffer groove groups are spaced apart along the first direction, and the buffer groove group includes two buffer grooves symmetrically arranged on the outer wall of the cable sheath.
[0017] As a preferred technical solution for the connection structure between the cable sheath and the housing, the adjacent buffer groove groups are distributed at 90 degrees.
[0018] As a preferred technical solution for the connection structure between the cable sheath and the housing, the width of the buffer groove along the first direction is A, the rib width between two adjacent buffer grooves along the first direction is B, A=B, and the range of A is 1.5mm-2.5mm.
[0019] As a preferred technical solution for the connection structure between the cable sheath and the housing, the distance between the outer wall of the housing assembly and the buffer groove group near one end of the housing assembly is 14mm-18mm.
[0020] The beneficial effects of this utility model are as follows:
[0021] This utility model provides a connection structure between a cable sheath and a housing. The cable passes through the cable hole in the cable sheath. When the cable sheath is assembled with the housing assembly, it passes through the connecting hole, with one side of the cable sheath embedded in a first semi-circular groove. Two connecting ribs of the cable sheath overlap a connecting boss. A clamping clamp is then pressed onto the other side of the cable sheath. Screws pass through the first and second through holes and are threaded into the threaded holes. On one hand, the screws, clamping clamp, connecting ribs, and connecting boss work together to achieve mechanical locking, providing reliable axial clamping force to prevent the cable sheath from detaching from the housing assembly, thus improving connection stability. On the other hand, the clamping clamp and the first semi-circular groove clamp the cable sheath, thereby causing the inner wall of the cable hole to press against the cable, increasing the friction between the cable and the cable hole, and preventing the cable from shifting relative to the cable sheath in the first direction. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.
[0023] Figure 1 This is one of the structural schematic diagrams of the connection structure between the cable sheath and the housing provided in a specific embodiment of this utility model;
[0024] Figure 2 This is an exploded view of the connection structure between the cable sheath and the housing provided in a specific embodiment of this utility model;
[0025] Figure 3 This is a partial structural diagram of the connection structure between the cable sheath and the housing provided in a specific embodiment of this utility model;
[0026] Figure 4 This is the second schematic diagram of the connection structure between the cable sheath and the housing provided in a specific embodiment of this utility model.
[0027] The markings in the image are as follows:
[0028] 1. Housing assembly; 11. Connecting hole; 12. Connecting boss; 121. Threaded hole; 13. First semi-circular groove; 14. First arc rib; 15. Annular groove; 16. First housing; 161. First semi-circular hole; 17. Second housing; 171. Second semi-circular hole; 2. Wire sheath; 21. Wire hole; 22. Connecting rib; 23. Annular boss; 24. Buffer groove group; 241. Buffer groove; 3. Compression clamp. Detailed Implementation
[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0032] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0033] like Figures 1-4As shown, this embodiment provides a connection structure between a cable sheath and a housing. This connection structure includes a housing assembly 1, a wire harness assembly, and a clamping clamp 3. The housing assembly 1 has a connecting hole 11, and its inner wall has a connecting boss 12 with a first semi-circular groove 13. The wire harness assembly includes a cable sheath 2 and a cable. The cable sheath 2 has a wire through hole 21 through which the cable passes. The cable sheath 2 passes through the connecting hole 11 and extends into the housing assembly 1. The outer wall of the cable sheath 2 has two symmetrically arranged connecting clamps extending in a first direction. The first direction of the connecting rib 22 is the axial direction of the wire sleeve 2. One side of the wire sleeve 2 is embedded in the first semi-circular groove 13, and the two connecting ribs 22 overlap on the connecting boss 12. The clamping hoop 3 clamps the other side of the wire sleeve 2. The clamping hoop 3 is provided with a first through hole at both ends, the connecting rib 22 is provided with a second through hole, and the connecting boss 12 is provided with a threaded hole 121. The first through hole, the second through hole and the threaded hole 121 are provided correspondingly. The screw passes through the first through hole and the second through hole and is threaded to the threaded hole 121 so that the clamping hoop 3 and the first semi-circular groove 13 clamp the wire sleeve 2.
[0034] The cable passes through the cable hole 21 of the cable sleeve 2. When the cable sleeve 2 is assembled with the housing assembly 1, the cable sleeve 2 passes through the connecting hole 11, and one side of the cable sleeve 2 is embedded in the first semi-circular groove 13. The two connecting ribs 22 of the cable sleeve 2 overlap the connecting boss 12. Then the clamping clamp 3 is pressed onto the other side of the cable sleeve 2. The screw passes through the first through hole and the second through hole and is threaded into the threaded hole 121. Firstly, the screw, clamping clamp 3, connecting rib 22, and connecting boss 12 work together to achieve mechanical locking, providing reliable axial clamping force to prevent the cable sleeve 2 from detaching from the housing assembly 1, thus improving the connection stability. Secondly, the clamping clamp 3 and the first semi-circular groove 13 clamp the cable sleeve 2, thereby pressing the inner wall of the cable hole 21 against the cable, increasing the friction between the cable and the cable hole 21, and thus preventing the cable from moving relative to the cable sleeve 2 in the first direction. Thirdly, since the clamping clamp 3 and the first semi-circular groove 13 contain the material of the cable sleeve 2 itself, the clamping clamp 3 can maintain a certain elastic rebound after being subjected to force, preventing the screw from loosening or the cable from falling off due to thermal expansion and contraction or dynamic load, thereby ensuring long-term stable and reliable connection and meeting the high protection level requirements of industrial equipment for cable fixing.
[0035] Preferably, the side wall of the first semi-circular groove 13 is provided with a first arc rib 14. The first arc rib 14 and the clamping hoop 3 clamp the cable sleeve 2. After the screw is tightened, the material of the cable sleeve 2 itself is sandwiched in the middle to realize a rigid-flexible composite structure. The first arc rib 14 interferes with the outer wall of the cable sleeve 2, increasing the deformation of the cable sleeve 2, thereby increasing the clamping force of the inner wall of the wire hole 21 on the cable, and improving the locking stability and vibration resistance.
[0036] More preferably, there are two first arc ribs 14, which are spaced apart along the first direction. The clamping hoop 3 is directly opposite the gap between the two first arc ribs 14, thereby improving the clamping effect of the wire sleeve 2.
[0037] In other embodiments, a second arc rib is provided on the side of the clamping clamp 3 near the cable sheath 2. After the screw is tightened, the second arc rib interferes with the outer wall of the cable sheath 2, increasing the deformation of the cable sheath 2, thereby increasing the clamping force of the inner wall of the cable hole 21 on the cable, and improving the locking stability and vibration resistance.
[0038] Furthermore, the inner wall of the connecting hole 11 is provided with an annular groove 15, and the outer wall of the cable sleeve 2 is provided with an annular boss 23. The annular boss 23 is engaged with the annular groove 15, thereby realizing the engagement between the cable sleeve 2 and the housing assembly 1. Through the two methods of buckle structure and mechanical locking, the bonding force between the cable sleeve 2, the cable, and the housing assembly 1 is improved from the perspectives of flexible contact and rigid fastening, respectively.
[0039] In this embodiment, the housing assembly 1 includes a first housing 16 and a second housing 17. A connecting boss 12 is disposed in one of the first housing 16 and the second housing 17. The first housing 16 is provided with a first semicircular hole 161, and the second housing 17 is provided with a second semicircular hole 171. Both the first semicircular hole 161 and the second semicircular hole 171 are provided with a second semicircular groove. The first semicircular hole 161 and the second semicircular hole 171 form a connecting hole 11, and the two second semicircular grooves form an annular slot 15. The connecting boss 12 is disposed in one of the first housing 16 and the second housing 17. During assembly, one side of the annular boss 23 is embedded in one of the two second semicircular grooves. Then, the first housing 16 is connected to the second housing 17 by screws or snap-fit. The other of the two second semicircular grooves is snapped into the other side of the annular boss 23, thus enabling the cable sleeve 2 to pass through and be snapped into the connecting hole 11.
[0040] In this embodiment, the annular boss 23 and the annular groove 15 are interference-fitted. Specifically, the outer diameter of the annular boss 23 is 0.1mm-0.2mm larger than the inner diameter of the annular groove 15. After the annular boss 23 and the annular groove 15 are engaged, the protective sleeve 2 and the connecting hole 11 are sealed together, thereby improving the sealing performance.
[0041] In existing technologies, the connection between the cable and the outer shell is subjected to a complex load environment involving bending, stretching, and micro-vibration for extended periods. Without proper protection, breakage at the connection point is highly likely. To address this issue, the cable sheath 2 is provided with multiple buffer groove groups 24 on its side wall outside the outer shell assembly 1. These buffer groove groups 24 are spaced apart along a first direction, and each buffer groove group 24 includes two symmetrically arranged buffer grooves 241 on the outer wall of the cable sheath 2. During bending or cable micro-vibration, the area with the buffer groove group 24 undergoes adaptive deformation. The annular groove provides deformation space, reducing wear at the connection between the cable sheath 2 and the shell assembly 1, preventing damage, and extending service life.
[0042] Preferably, adjacent buffer groove groups 24 are distributed at 90 degrees so that the buffer groove 241 can provide buffer when the cable sleeve 2 is bent in any direction, thereby improving the service life of the cable sleeve 2. Multiple buffer groove groups 24 form a symmetrical I-shaped hollow groove array evenly distributed around the axial direction on the outer periphery of the cable sleeve 2, constructing a flexible elastic zone, guiding stress diffusion under multiple bending conditions, and avoiding concentrated fatigue damage.
[0043] Preferably, the width of the buffer groove 241 along the first direction is A, and the rib width between two adjacent buffer grooves 241 along the first direction is B, where A = B. The range of A is 1.5mm-2.5mm, balancing sufficient flexibility with overall strength continuity, avoiding local deformation accumulation, and achieving rigid-flexible coordination in structural mechanics. Specifically, the values of A and B can be 1.5mm, 2mm, or 2.5mm.
[0044] Preferably, the bottom of the buffer groove 241 is provided with rounded corners, and the bottom of the buffer groove 241 adopts a rounded transition design, which effectively suppresses stress concentration and improves the structural fatigue life under multiple cycles of bending.
[0045] Preferably, the distance between the outer wall of the housing assembly 1 and the buffer groove group 24 near one end of the housing assembly 1 is 14mm-18mm. At this distance, when the cable sheath 2 bends, only the buffer groove group 24 deforms, shortening the lever arm caused by external bending, thereby effectively reducing the torque concentration area transmitted to the connection hole 11, and also optimizing the stress transmission path, making the structure have stronger fatigue resistance during repeated deformation. While ensuring bending flexibility, it further suppresses potential failure modes such as interface cracking, plastic yielding, and long-term cumulative displacement, improving the reliability of the cable sheath 2. Specifically, the distance between the outer wall of the housing assembly 1 and the buffer groove group 24 near one end of the housing assembly 1 is 14mm, 15mm, 16mm, or 18mm.
[0046] In this embodiment, the cable sheath 2 is made of reinforced thermoplastic rubber or polyvinyl chloride, with a material hardness controlled above Shore A60, possessing good adaptability to injection molding processes and dimensional stability. The clamping clamp 3 is made of stainless steel.
[0047] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.
Claims
1. A connection structure between a cable sheath and a housing, characterized in that, include: The housing assembly (1) is provided with a connecting hole (11), and the inner wall of the housing assembly (1) is provided with a connecting boss (12), and the connecting boss (12) is provided with a first semi-circular groove (13). The wire harness assembly includes a wire sheath (2) and a cable. The wire sheath (2) is provided with a wire hole (21), through which the cable passes. The wire sheath (2) passes through the wire hole (21) and extends into the housing assembly (1). The outer wall of the wire sheath (2) is symmetrically provided with two connecting ribs (22) extending along a first direction, which is the axial direction of the wire sheath (2). One side of the wire sheath (2) is embedded in the first semi-circular groove (13), and the two connecting ribs (22) overlap the connecting boss (12). A clamping hoop (3) is used to clamp the other side of the wire sheath (2). The clamping hoop (3) has a first through hole at each end, and the connecting rib (22) has a second through hole. The connecting boss (12) has a threaded hole (121). The first through hole, the second through hole and the threaded hole (121) are arranged correspondingly. Screws are inserted through the first through hole and the second through hole and threaded to the threaded hole (121) so that the clamping hoop (3) and the first semi-circular groove (13) clamp the wire sheath (2).
2. The connection structure between the cable sheath and the housing according to claim 1, characterized in that, The side wall of the first semi-circular groove (13) is provided with a first arc rib (14), and the first arc rib (14) clamps the wire sleeve (2) with the clamping hoop (3).
3. The connection structure between the cable sheath and the housing according to claim 2, characterized in that, There are two first arc ribs (14), and the two first arc ribs (14) are spaced apart along the first direction. The clamping hoop (3) is directly opposite the gap between the two first arc ribs (14).
4. The connection structure between the cable sheath and the housing according to claim 1, characterized in that, The clamping hoop (3) is provided with a second arc rib on the side near the wire sleeve (2).
5. The connection structure between the cable sheath and the housing according to claim 1, characterized in that, The inner wall of the connecting hole (11) is provided with an annular groove (15), and the outer wall of the wire sheath (2) is provided with an annular boss (23), which is engaged with the annular groove (15).
6. The connection structure between the cable sheath and the housing according to claim 5, characterized in that, The annular boss (23) is interference-fitted with the annular slot (15).
7. The connection structure between the cable sheath and the housing according to any one of claims 1-6, characterized in that, The cable sheath (2) is provided with a plurality of buffer groove groups (24) on the side wall outside the housing assembly (1). The plurality of buffer groove groups (24) are spaced apart along the first direction. The buffer groove group (24) includes two buffer grooves (241) symmetrically arranged on the outer wall of the cable sheath (2).
8. The connection structure between the cable sheath and the housing according to claim 7, characterized in that, The adjacent buffer slot groups (24) are distributed at 90 degrees.
9. The connection structure between the cable sheath and the housing according to claim 7, characterized in that, The width of the buffer groove (241) along the first direction is A, and the rib width between two adjacent buffer grooves (241) along the first direction is B, A=B, and the range of A is 1.5mm-2.5mm.
10. The connection structure between the cable sheath and the housing according to claim 7, characterized in that, The distance between the outer wall of the housing assembly (1) and the buffer groove group (24) near one end of the housing assembly (1) is 14mm-18mm.