Anti-bending waterproof anti-skid pre-branched cable and processing method thereof
By designing a trapezoidal ring groove on the insulation layer of the pre -split cable and the design of the water expansion layer, it solves the problem of leakage in the bending or force time gap of the pre -section cable, and achieves excellent waterproof, anti -curved and bending and bending and bending and bending and anti -bending and anti -curved bending and anti -bending and bending bending and anti -bending and bending and bending and anti -bending and bending and bending and bending and bending and bending and bending. Anti -slip performance.
Patent Information
- Application Number
- CN202411512015.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-01-28
AI Technical Summary
When existing pre-branched cables are bent or subjected to stress, gaps may form between the branch and the cable, causing water to enter and cause leakage, especially in harsh environments.
Design a type of anti -bending waterproof and anti -sliding pre -divide cable, adopts waterproof materials with trapezoidal grooves on the insulation layer of the main cable and branch cable, and the waterproofing material that is wrapped in the water expansion layer in the groove to form a seal and connection structure to ensure that it is in It can still maintain good sealing when bending or stress.
The combination of trapezoidal grooves and water expansion layers realizes the prevention of water from entering the branch in a water environment to avoid leakage accidents, while ensuring the anti -bending and non -slip performance of the cable.
Smart Images
Figure CN119381061A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of pre-branching cables, and in particular to a bending-proof, waterproof and sliding-proof pre-branching cable and a processing method thereof. Background Art
[0002] Pre-branching cable is a drawing formed by the technicians arranged by the wire and cable manufacturer to go to the construction site, measure relevant data according to the design requirements and the actual situation on site, and after the confirmation of the on-site construction party, design and form a pre-branching cable diagram. It includes the specific location of the pre-branching cable, the number of the connection distribution box, the specifications, models, lengths, branch point locations, and the upward or downward direction of the branch cables of the main cable and branch cables. The wire and cable production factory produces on special equipment according to the drawings, and sends them to the construction site after passing the inspection on special testing instruments. This kind of pre-branching cable has the characteristics of high reliability, short cycle, and convenient construction.
[0003] In the process of producing pre-branching cables, injection molding of branch bodies is an important process. Its quality determines whether there will be problems with the branch cables during use. The original injection molding of pre-branch bodies is produced in a mold using injection molding insulating materials. The connection between the injection molding body and the cable is relatively tight. Under normal circumstances, water is not easy to enter the pre-branch body from the gap between the injection molding body and the cable, thereby causing an accident. However, in some special cases, such as: unreasonable bending (branch body part) and stress during transportation and construction, resulting in a gap between the pre-branch body and the cable part. If there is water near the pre-branch body, it is easy for water to enter the pre-branch body from the gap along the two intersection surfaces in a straight line. Especially in some places with relatively harsh environments, such as humid and watery places, water enters the branch body from the gap between the conductor and the branch body, which can easily cause leakage accidents. Summary of the invention
[0004] The present invention is intended to provide a pre-branching cable that is anti-bending, waterproof and anti-slip, so as to solve the problem that when the branch body of the existing pre-branching cable is bent or subjected to stress, a gap is formed between the pre-branching body and the cable, and in a water environment, water enters the branch body through the gap between the conductor and the branch body, which can easily cause leakage accidents.
[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical scheme: a bending-proof, waterproof and anti-slip pre-branching cable, comprising a main cable, a branch cable and a branch body, the main cable comprising a main cable conductor and a main cable insulation layer, the branch cable comprising a branch cable conductor and a branch cable insulation layer, the branch cable conductor is connected to the main cable conductor in the branch body, trapezoidal annular grooves are provided on the main cable insulation layers at both ends of the main cable in the branch body, trapezoidal annular grooves are also provided on the branch cable insulation layers of the branch cables in the branch body, the trapezoidal annular grooves are all wound with water-expandable layers, and the branch body comprises trapezoidal annular ribs embedded in and filling the trapezoidal annular grooves.
[0006] Preferably, as an improvement, the depth of the trapezoidal annular groove on the main cable insulation layer is two-thirds of the thickness of the main cable insulation layer.
[0007] Preferably, as an improvement, the depth of the trapezoidal annular groove on the branch cable insulation layer is two-thirds of the thickness of the branch cable insulation layer.
[0008] Preferably, as an improvement, the opening size of the trapezoidal annular groove on the main cable insulation layer is 6-10 mm, and the bottom size is 10-15 mm.
[0009] Preferably, as an improvement, the opening size of the trapezoidal annular groove on the branch cable insulation layer is 4-6 mm, and the bottom size is 6-10 mm.
[0010] The principle and advantages of this scheme are as follows: in actual application, the conductor of the branch cable is fixed to the conductor of the main cable by crimping copper clips, so that electric energy can be distributed from the main cable to the branch cable. The insulation of the main cable is stripped at the connection point between the branch cable conductor and the main cable conductor. The trapezoidal ring grooves on both sides of the connection point form a labyrinth seal and connection structure between the insulation of the main cable and the branch body during the injection molding process of the branch body, and a waterproof layer that swells when exposed to water is provided in the trapezoidal ring groove. If the branch part is bent during transportation, construction, or stress, the trapezoidal connection structure forms a mortise-and-tenon-like buckling structure, which can ensure the stability of the connection between the insulation of the main cable and the branch body, prevent the branch body from sliding with the main cable and the branch cable, and prevent the branch body from being separated from the main cable and the branch cable due to bending. The size design of the trapezoidal ring groove not only ensures the stability and reliability of the trapezoidal structure connection, but also ensures the protection and insulation performance of the insulation of the main cable and the branch cable on the conductor, and ensures the strength of the insulation layer of the main cable and the branch cable itself. Moreover, such a structure has good sealing properties. Even in a water environment, water can enter the gap caused by the bend. The waterproof layer can expand to 10 times its volume after encountering water, and can effectively fill the gap in such a relatively small space, thereby preventing water from infiltrating into the conductor connection part inside the branch body, and has excellent waterproof performance.
[0011] A method for processing an anti-bending, waterproof and anti-slip pre-branching cable, used for processing the above anti-bending, waterproof and anti-slip pre-branching cable, comprises the following steps:
[0012] A. Prepare the main cable, select the branch point on the main cable, strip the insulation layer at the branch point to expose the conductor, and process the trapezoidal ring groove on the insulation layer on both sides of the branch point;
[0013] B. Prepare the branch cable, strip the insulation of the branch cable end to expose the conductor, and machine a trapezoidal ring groove on the insulation layer outside the exposed conductor;
[0014] C. Use a crimping copper clamp to crimp and fix the exposed conductor at the end of the branch cable to the exposed conductor at the branch point of the main cable;
[0015] D. A waterproof tape that swells when exposed to water is wound in each trapezoidal ring groove;
[0016] E. Use an injection molding machine and an injection mold to inject insulating material on the outside of the main cable and the branch cable to form a branch body, so that the insulating material wraps the two trapezoidal ring grooves of the main cable, the part between the two trapezoidal ring grooves of the main cable, the trapezoidal ring groove of the branch cable, and the part from the trapezoidal ring groove of the branch cable to the end to form an integrated branch body, and the insulating material fills each trapezoidal ring groove.
[0017] Preferably, as an improvement, the trapezoidal annular groove processed on the insulation layer of the main cable in step A has an opening size of 6-10 mm and a bottom size of 10-15 mm.
[0018] Preferably, as an improvement, the trapezoidal annular groove processed on the insulation layer of the branch cable in step B has an opening size of 4-6 mm and a bottom size of 6-10 mm.
[0019] Preferably, as an improvement, the depth of the trapezoidal annular groove in step A and step B is two-thirds of the thickness of the insulating layer.
[0020] Preferably, as an improvement, the waterproof tape used in step D expands 10 times in volume after coming into contact with water.
[0021] The anti-bending, waterproof and anti-slip pre-branching cable branch body manufactured by such a process has a stable and reliable connection with the main cable and the branch cable. It is not easy to cause the branch body to detach during transportation, construction, stress, etc., and has excellent anti-bending and anti-slip performance. By processing the trapezoidal ring groove and wrapping it with a waterproof tape, and then injection molding the branch body, even if it is in a water environment during use and water penetrates into the trapezoidal ring groove, the gap can be filled by the waterproof tape that expands when it encounters water, thereby preventing water from penetrating into the conductor connection part to cause leakage, and has excellent waterproof performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the structure of Example 1 of the present invention. DETAILED DESCRIPTION
[0023] The following is further described in detail through specific implementation methods:
[0024] The reference numerals in the drawings of the specification include: main cable conductor 1, main cable insulation layer 2, trapezoidal ring groove 3, crimped copper clamp 4, branch body 5, waterproof layer 6, branch cable insulation layer 7, branch cable conductor 8.
[0025] Embodiment 1, basically as attached Figure 1As shown: a bending-proof, waterproof and anti-slip pre-branching cable, including a main cable, a branch cable and a branch body 5, the main cable includes a main cable conductor 1 and a main cable insulation layer 2, the branch cable includes a branch cable conductor 8 and a branch cable insulation layer 7, the branch cable conductor 8 and the main cable conductor 1 are compressed and connected in the branch body 5 by crimping copper clamps 4, the main cable insulation layer 2 at both ends of the main cable in the branch body 5 is provided with a trapezoidal annular groove 3, the depth of the trapezoidal annular groove 3 on the main cable insulation layer 2 is two-thirds of the thickness of the main cable insulation layer 2, the opening size of the trapezoidal annular groove 3 on the main cable insulation layer 2 is 6-10mm, and the bottom size is 10-15mm. The branch cable insulation layer 7 of the branch cable in the branch body 5 is also provided with a trapezoidal annular groove 3, the depth of the trapezoidal annular groove 3 on the branch cable insulation layer 7 is two-thirds of the thickness of the branch cable insulation layer 7, the opening size of the trapezoidal annular groove 3 on the branch cable insulation layer 7 is 4-6mm, and the bottom size is 6-10mm. A waterproof layer 6 that swells when exposed to water is wound inside the trapezoidal annular groove 3 , and the branch body 5 includes a trapezoidal annular rib embedded in and filling the trapezoidal annular groove 3 .
[0026] Embodiment 2, a method for processing an anti-bending, waterproof and anti-slip pre-branching cable, used for processing an anti-bending, waterproof and anti-slip pre-branching cable of embodiment 1, comprising the following steps:
[0027] A. Prepare the main cable, select the branch point on the main cable, strip the insulation layer at the branch point to expose the conductor, and process the trapezoidal annular groove 3 on the insulation layer on both sides of the branch point. The opening size of the trapezoidal annular groove 3 is 6-10mm, the bottom size is 10-15mm, and the depth of the trapezoidal annular groove 3 is two-thirds of the thickness of the insulation layer 2 of the main cable;
[0028] B. Prepare the branch cable, remove the insulation of the branch cable end to expose the conductor, and process a trapezoidal annular groove 3 on the insulation layer outside the exposed conductor. The opening size of the trapezoidal annular groove 3 is 4-6 mm, the bottom size is 6-10 mm, and the depth of the trapezoidal annular groove 3 is two-thirds of the thickness of the branch cable insulation layer 7;
[0029] C. Use the crimping copper clamp 4 to crimp and fix the exposed conductor at the end of the branch cable to the exposed conductor at the branch point of the main cable;
[0030] D. A waterproof tape that expands when exposed to water is wound in each trapezoidal annular groove 3, and the waterproof tape is made of a material that expands 10 times in volume when exposed to water;
[0031] E. Use an injection molding machine and an injection mold to inject insulating material on the outside of the main cable and the branch cable to form a branch body 5, so that the insulating material wraps the two trapezoidal annular grooves 3 of the main cable, the part between the two trapezoidal annular grooves 3 of the main cable, the trapezoidal annular groove 3 of the branch cable, and the part from the trapezoidal annular groove 3 of the branch cable to the end to form an integrated branch body 5, and the insulating material fills each trapezoidal annular groove 3.
[0032] The water-swellable material used in this embodiment is a commonly used material in this field, and a commercial product can be purchased as needed. The specific model is not traced here.
[0033] In actual application, the conductor of the branch cable is fixed on the conductor of the main cable by crimping the copper clamp 4, so that the electric energy can be distributed from the main cable to the branch cable. The insulation of the main cable is stripped at the connection point between the branch cable conductor 8 and the main cable conductor 1. The trapezoidal annular grooves 3 on both sides of the connection point form a labyrinth seal and connection structure between the insulation of the main cable and the branch body 5 during the injection molding process of the branch body 5, and a waterproof layer 6 that swells when exposed to water is arranged in the trapezoidal annular groove 3. If the branch part is bent during transportation, construction, or stress, the trapezoidal connection structure forms a mortise-and-tenon-like snap-fit structure, which can ensure the stability of the connection between the insulation of the main cable and the branch body 5, prevent the branch body 5 from sliding with the main cable and the branch cable, and prevent the branch body 5 from being separated from the main cable and the branch cable due to bending. The size design of the trapezoidal annular groove 3 not only ensures the stability and reliability of the connection of the trapezoidal structure, but also ensures the protection and insulation performance of the insulation of the main cable and the branch cable on the conductor, and ensures the strength of the insulation layer of the main cable and the branch cable themselves. Moreover, such a structure has good sealing properties. Even in a water environment, water enters the gap caused by the bend. The waterproof layer 6 can expand to 10 times its volume after encountering water, and can effectively fill the gap in such a relatively small space, thereby preventing water from infiltrating into the conductor connection part inside the branch body 5, and has excellent waterproof performance.
[0034] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A bending-proof, waterproof and anti-slip pre-branching cable, comprising a main cable, a branch cable and a branch body, wherein the main cable comprises a main cable conductor and a main cable insulation layer, the branch cable comprises a branch cable conductor and a branch cable insulation layer, and the branch cable conductor is connected to the main cable conductor in the branch body, characterized in that: The main cable insulation layers at both ends of the main cable in the branch body are provided with trapezoidal annular grooves, and the branch cable insulation layers of the branch cables in the branch body are also provided with trapezoidal annular grooves. The trapezoidal annular grooves are all wrapped with water-expandable layers. The branch body includes trapezoidal annular ribs embedded in and filling the trapezoidal annular grooves.
2. The anti-bending, waterproof and anti-slip pre-branching cable according to claim 1, characterized in that: The depth of the trapezoidal annular groove on the main cable insulation layer is two-thirds of the thickness of the main cable insulation layer.
3. The anti-bending, waterproof and anti-slip pre-branching cable according to claim 1, characterized in that: The depth of the trapezoidal annular groove on the branch cable insulation layer is two-thirds of the thickness of the branch cable insulation layer.
4. The anti-bending, waterproof and anti-slip pre-branching cable according to claim 1, characterized in that: The opening size of the trapezoidal annular groove on the main cable insulation layer is 6-10 mm, and the bottom size is 10-15 mm.
5. The anti-bending, waterproof and anti-slip pre-branching cable according to claim 1, characterized in that: The opening size of the trapezoidal annular groove on the insulating layer of the branch cable is 4-6 mm, and the bottom size is 6-10 mm.
6. A method for processing a bending-proof, waterproof and anti-slip pre-branching cable, used for processing a bending-proof, waterproof and anti-slip pre-branching cable as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: A. Prepare the main cable, select the branch point on the main cable, strip the insulation layer at the branch point to expose the conductor, and process the trapezoidal ring groove on the insulation layer on both sides of the branch point; B. Prepare the branch cable, strip the insulation of the branch cable end to expose the conductor, and machine a trapezoidal ring groove on the insulation layer outside the exposed conductor; C. Use a crimping copper clamp to crimp and fix the exposed conductor at the end of the branch cable to the exposed conductor at the branch point of the main cable; D. A waterproof tape that swells when exposed to water is wound in each trapezoidal ring groove; E. Use an injection molding machine and an injection mold to inject insulating material on the outside of the main cable and the branch cable to form a branch body, so that the insulating material wraps the two trapezoidal ring grooves of the main cable, the part between the two trapezoidal ring grooves of the main cable, the trapezoidal ring groove of the branch cable, and the part from the trapezoidal ring groove of the branch cable to the end to form an integrated branch body, and the insulating material fills each trapezoidal ring groove.
7. A method for processing anti-bending, waterproof and anti-slip pre-branching cables according to claim 6, characterized in that: The trapezoidal annular groove processed on the insulation layer of the main cable in step A has an opening size of 6-10 mm and a bottom size of 10-15 mm.
8. A method for processing anti-bending, waterproof and anti-slip pre-branching cables according to claim 7, characterized in that: The trapezoidal annular groove processed on the insulating layer of the branch cable in step B has an opening size of 4-6 mm and a bottom size of 6-10 mm.
9. A method for processing anti-bending, waterproof and anti-slip pre-branching cables according to claim 8, characterized in that: The depth of the trapezoidal annular groove in step A and step B is two-thirds of the thickness of the insulating layer.
10. A method for processing anti-bending, waterproof and anti-slip pre-branching cables according to claim 9, characterized in that: The waterproof tape used in step D expands 10 times in volume after coming into contact with water.