A tightly connected and highly efficient cable protection conduit connector
By designing connecting sleeve fittings, sealing components, and locking ring components, the problem of poor sealing of cable protection pipe connectors was solved, achieving tight connection and simplified operation, and improving the sealing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG WEISHUN ELECTRIC POWER ENG CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-06-30
AI Technical Summary
The existing cable protection pipe connectors have poor sealing performance and are cumbersome to tighten.
The system employs connecting sleeve fittings, sealing components, and locking ring components. Through the design of the arc-shaped clamping plate and locking ring, a tight connection and seal of the protective tube is achieved. Rubber strips and elastic inner liner components are used to improve the sealing performance and the stability of the protective tube.
It achieves tightness and sealing of the protective tube connection, simplifies the tightening operation, and improves the reliability and sealing effect of the connection.
Smart Images

Figure CN224438450U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cable protection technology, and in particular relates to a tightly connected and highly efficient cable protection pipe connector. Background Technology
[0002] Cable protection conduits are pre-buried underground and fitted around cables to protect them from human-caused or natural damage. They are typically composed of multiple conduit sections joined together, with adjacent sections connected by connectors. However, some cables require additional protection conduits after installation. In these cases, two semi-circular pipes are joined together to cover the cable, and connectors are used to connect the multiple sections. Therefore, these connectors need to be detachable and snap onto the ends of the conduits. Detachability necessitates excellent sealing to ensure a tight seal at the connection point. However, existing cable protection conduit connections only provide a connection and generally offer poor sealing.
[0003] To address these issues, we provide a tightly and efficiently connected cable protection conduit connector. Utility Model Content
[0004] The purpose of this utility model is to provide a tightly connected and efficient cable protection pipe connector. The connecting sleeve is fastened and clamped by a locking ring assembly, so that the arc-shaped clamping plate is tightly fitted on the protection pipe, thereby realizing the connection of the protection pipe. This solves the problems of poor sealing and cumbersome fastening operation of existing cable protection pipe connectors.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model relates to a tightly connected and efficient cable protection pipe connector, comprising a connecting sleeve, a sealing assembly, and a locking ring assembly. The connecting sleeve comprises two symmetrical semi-circular sleeves, with rubber strips inserted into the inner sides of the mating edges of the two semi-circular sleeves. The sealing assembly comprises two arc-shaped clamping plates, with equally spaced insertion strips at both ends of the arc-shaped clamping plates. Each of the two semi-circular sleeves has an arc-shaped clamping plate adhered to its inner sidewall at both ends. When the two semi-circular sleeves are engaged, the insertion strips on the two arc-shaped clamping plates on the same side cross-connect. Each semi-circular sleeve has an external thread that gradually widens from both ends inward. The locking ring assembly comprises two detachable semi-circular locking rings, with an internal thread that gradually narrows on its inner sidewall. The locking ring assembly is screwed onto the external thread.
[0007] The present invention is further configured such that an L-shaped groove is provided on the inner side of both sides of the semi-circular sleeve, and the rubber strip is an L-shaped rubber strip that matches the L-shaped groove.
[0008] The present invention is further configured such that the arc-shaped card plate includes an arc-shaped steel plate in the middle, an outer rubber layer, and an inner rubber layer.
[0009] The present invention is further configured such that an elastic inner liner assembly is installed on the inner wall of the semicircular sleeve on the inner side of the arc-shaped clamping plate at each end of the semicircular sleeve. The elastic inner liner assembly includes a semicircular inner plate, a mounting post, a square sleeve, and springs. The mounting post is fixed at the rear side of the outer surface of the semicircular inner plate. Four springs are evenly distributed on the top of the mounting post. The square sleeve is fixed on the inner wall of the semicircular sleeve, and the mounting post is movably inserted into the square sleeve.
[0010] The present invention is further configured such that when the two semi-circular inner plates on the same side are joined together, they form a cylindrical inner liner tube, which is inserted into the end of the cable protection tube and fits against the inner wall.
[0011] The present invention is further configured such that the semicircular locking ring includes a first semicircular locking ring and a second semicircular locking ring, one end of the first semicircular locking ring and one end of the second semicircular locking ring are rotatably connected by a shaft, the other end of the first semicircular locking ring is provided with an L-slot, and the other end of the second semicircular locking ring is provided with an L-shaped plug, the L-shaped plug being inserted into the L-slot.
[0012] This utility model has the following beneficial effects:
[0013] 1. When the protective tubes of this utility model need to be connected, two semi-circular sleeves are placed on the connection position of the two protective tubes, so that the arc-shaped clamping plate is tightly clamped on the end of the protective tube to achieve a clamping seal. The joint position of the two semi-circular sleeves is sealed by pressing with rubber strips to seal the gap position, thereby achieving the sealing effect of the connecting tube connection.
[0014] 2. To prevent the protective tube from being squeezed and deformed by the arc-shaped clamping plate at the connection position, this utility model provides an elastic inner lining plate assembly to support the inside of the protective tube and prevent inward deformation.
[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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 these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of a tightly and efficiently connected cable protection pipe connector.
[0018] Figure 2 This is a schematic diagram of a tightly and efficiently connected cable protection pipe connector.
[0019] Figure 3 This is a schematic diagram showing the position and structure of the arc-shaped card plate and the semi-circular inner layer plate.
[0020] Figure 4 This is a schematic diagram of the side structure of the semi-circular sleeve.
[0021] Figure 5 This is a schematic diagram of the locking ring assembly.
[0022] The attached diagram lists the components represented by each number as follows:
[0023] 1. Locking ring assembly; 11. First semi-circular locking ring; 111. L-slot; 12. Second semi-circular locking ring; 121. L-shaped plug; 2. Connecting sleeve fitting; 21. Semi-circular sleeve; 211. External thread; 212. Square sleeve; 213. L-shaped groove; 3. Arc-shaped retaining plate; 31. Outer rubber; 32. Arc-shaped steel plate; 33. Inner rubber; 4. Semi-circular inner layer plate; 41. Mounting post; 411. Spring; 5. Rubber strip. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figure 1-5 This utility model is a tightly connected and efficient cable protection pipe connector, including a connecting sleeve 2, a sealing assembly, and a locking ring assembly 1. The connecting sleeve 2 includes two symmetrical semi-circular sleeves 21. Rubber strips 5 are inserted into the inner side of the mating edge of the two semi-circular sleeves 21. The sealing assembly includes two arc-shaped clamping plates 3. The two ends of the arc-shaped clamping plates 3 are equally spaced insertion strips. An arc-shaped clamping plate 3 is attached to the inner wall of each of the two semi-circular sleeves 21. When the two semi-circular sleeves 21 are engaged, the insertion strips on the two arc-shaped clamping plates 3 on the same side are cross-joined. The semi-circular sleeves 21 are provided with external threads 211 that gradually widen from both ends inward. The locking ring assembly 1 includes two detachable semi-circular locking rings. The inner wall of the semi-circular locking rings is provided with internal threads 13 that gradually narrow. The locking ring assembly 1 is screwed onto the external threads 211.
[0026] When connecting protective tubes at locations where they have already been installed, or where a connector is needed at the joint, a quick-installation method is required. Two opposing locking ring assemblies 1 are installed at the protective tube location. Then, two semi-circular sleeves 21 are fastened onto the cable. At this time, the two arc-shaped clamping plates 3 on both sides are respectively fitted onto the ends of the protective tubes. The locking ring assembly 1 is then screwed onto the external threads of the two arc-shaped clamping plates 3. Due to the inward rotation, the two arc-shaped clamping plates 3 are pressed more tightly together, thus clamping the arc-shaped clamping plates 3 and achieving a sealed connection.
[0027] The inner sides of both sides of the semi-circular sleeve 21 are provided with L-shaped grooves 213, and the rubber strip 5 is an L-shaped rubber strip that matches the L-shaped grooves 213.
[0028] The rubber strip 5 will not shift when compressed within the L-shaped groove 213. For example... Figure 4 As shown, the rubber strip 5 protrudes outward. When squeezed, the rubber strip 5 will deform and fit together, and the seal will be subjected to increased compression.
[0029] The arc-shaped plate 3 includes an arc-shaped steel plate 32 in the middle, an outer rubber layer 31, and an inner rubber layer 33.
[0030] Both the outer rubber layer 31 and the inner rubber layer 33 deform during compression to ensure a tight fit against the outer wall of the protective tube end. This is because the insert strips on the arc-shaped clamping plate 3 interlock (e.g., ...). Figure 3 The outer wall of the protective tube can be fully contacted at the docking position. When the outer rubber 31 and inner rubber 33 deform, the rubber on the insert strip deforms into one piece, achieving docking seal.
[0031] An elastic inner liner assembly is installed on the inner wall of the semicircular sleeve 21 on the inner side of the arc-shaped clamping plate 3 at each end. The elastic inner liner assembly includes a semicircular inner plate 4, a mounting post 41, a square sleeve 212, and springs 411. The mounting post 41 is fixed at the rear side of the outer surface of the semicircular inner plate 4. Four springs 411 are evenly distributed on the top of the mounting post 41. The square sleeve 212 is fixed on the inner wall of the semicircular sleeve 21, and the mounting post 41 is movably inserted into the square sleeve 212.
[0032] Because the protective tube may deform inward when compressed, two semi-circular inner plates 4 are placed inside the protective tube and fitted to the inner wall to increase the strength of the protective tube wall during compression. The mounting post 41 can expand and contract within the square sleeve 212 and elastically return to its original position. After the two semi-circular inner plates 4 are joined, they will not deform even under further compression.
[0033] When the two semi-circular inner plates 4 on the same side are joined together, they form a cylindrical inner liner tube, which is inserted into the end of the cable protection tube and fits against the inner wall.
[0034] The protective tube fits perfectly onto the semi-circular inner plate 4, which basically ensures that the protective tube will not deform inward.
[0035] The semicircular locking ring includes a first semicircular locking ring 11 and a second semicircular locking ring 12. One end of the first semicircular locking ring 11 and one end of the second semicircular locking ring 12 are rotatably connected by a shaft. The other end of the first semicircular locking ring 11 is provided with an L-slot 111, and the other end of the second semicircular locking ring 12 is provided with an L-shaped plug 121. The L-shaped plug 121 is inserted into the L-slot 111.
[0036] During installation, the L-shaped plug 121 is detached from the L-slot 111. When it is slipped over the cable, the L-shaped plug 121 is inserted into the L-slot 111 to complete the engagement and form a ring. For later disassembly, an outward-facing hole is provided at the L-slot 111 (e.g., ...). Figure 5 As shown, insert the guide rod into the hole to push the L-shaped plug 121 down to disengage it from the L slot 111, thus achieving disassembly.
[0037] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A close-coupled, high-efficiency cable protection pipe coupling, characterized by: The assembly includes a connecting sleeve (2), a sealing component, and a locking ring assembly (1). The connecting sleeve (2) includes two symmetrical semi-circular sleeves (21). Rubber strips (5) are inserted on the inner side of the mating edge of the two semi-circular sleeves (21). The sealing component includes two arc-shaped clamps (3). The two ends of the arc-shaped clamps (3) are equally spaced insertion strips. An arc-shaped clamp (3) is attached to the inner sidewall of each of the two semi-circular sleeves (21). When the two semi-circular sleeves (21) are engaged, the insertion strips on the two arc-shaped clamps (3) on the same side are cross-joined. The semi-circular sleeves (21) are provided with gradually widening external threads (211) from both ends inward. The locking ring assembly (1) includes two detachable semi-circular locking rings. The inner sidewall of the semi-circular locking rings is provided with gradually narrowing internal threads (13). The locking ring assembly (1) is screwed onto the external threads (211).
2. A joint for jointed close-fit efficient cable protection pipes according to claim 1, characterized in that The inner sides of both sides of the semi-circular sleeve (21) are provided with L-shaped grooves (213), and the rubber strip (5) is an L-shaped rubber strip that matches the L-shaped grooves (213).
3. The cable protection conduit connector with tight and efficient connection according to claim 1, characterized in that, The arc-shaped plate (3) includes an arc-shaped steel plate (32) in the middle, an outer rubber layer (31) and an inner rubber layer (33).
4. A tightly connected and highly efficient cable protection conduit connector according to any one of claims 1 or 3, characterized in that, An elastic inner liner assembly is installed on the inner wall of the semicircular sleeve (21) on the inner side of the arc-shaped clamping plate (3) at each end. The elastic inner liner assembly includes a semicircular inner plate (4), a mounting post (41), a square sleeve (212), and a spring (411). The mounting post (41) is fixed on the rear side of the outer surface of the semicircular inner plate (4). Four springs (411) are evenly distributed on the top of the mounting post (41). The square sleeve (212) is fixed on the inner wall of the semicircular sleeve (21). The mounting post (41) is movably inserted into the square sleeve (212).
5. The tightly connected and highly efficient cable protection pipe connector according to claim 4, characterized in that, When the two semi-circular inner plates (4) on the same side are joined together, they form a cylindrical inner liner tube, which is inserted into the end of the cable protection tube and fits against the inner wall.
6. The cable protection conduit connector with tight and efficient connection according to claim 1, characterized in that, The semicircular locking ring includes a first semicircular locking ring (11) and a second semicircular locking ring (12). One end of the first semicircular locking ring (11) is rotatably connected to one end of the second semicircular locking ring (12) via a shaft. The other end of the first semicircular locking ring (11) is provided with an L-slot (111), and the other end of the second semicircular locking ring (12) is provided with an L-shaped plug (121). The L-shaped plug (121) is inserted into the L-slot (111).