A mineral insulated pre-branch cable

Abstract

The utility model relates to a kind of mineral matter insulation pre-branch cable, including main body sleeve tube, the middle part of main body sleeve tube top is fixedly connected with branch sleeve tube, main body sleeve tube and branch sleeve tube are integrally formed, first wire core and second wire core are equipped in main body sleeve tube, one end of second wire core is movably sleeved in branch sleeve tube interior, by the mutual cooperation between each component, connection block can be made into connection box, and the insertion of plug block will be inserted into the fixed connection block, so that it cannot be bounced upwards, so that when branch sleeve tube is pushed towards the middle part of main body sleeve tube, the fixation of branch sleeve tube will not be removed, the stability of the fixation of branch sleeve tube is improved, and by the cooperation of movable slot and movable block, the force received by the connection of main body sleeve tube and branch sleeve tube can be reduced, to avoid the connection of main body sleeve tube and branch sleeve tube being pulled off by tension and causing cable unable to use.

Description

Technical Field

[0001] This utility model relates to the field of pre-branched cable technology, and in particular to a mineral-insulated pre-branched cable. Background Technology

[0002] Pre-branched cables are cables in which branch lines are prefabricated according to user design drawings during the production of main cables. They are a relatively new technology product in recent years, offering superior shock resistance, airtightness, and waterproofing compared to traditional technologies. Pre-branched cables mainly consist of main conductors, branch conductors, and connecting assemblies for linking the main and branch conductors. The quality of the connection between the main and branch conductors directly affects the quality of the pre-branched cable. Mineral-insulated pre-branched cables, as a new type of prefabricated building power distribution cable, have emerged to meet this need. These cables use minerals (such as magnesium oxide) as insulation materials, resulting in excellent electrical and mechanical properties.

[0003] An existing patent (publication number: CN221842286U) discloses a pre-branched cable, including a main outer sheath, with a branch outer sheath integrally formed on one side of the main outer sheath, and a first core and a second core respectively disposed inside the main outer sheath. In the process of implementing this solution, the inventors discovered the following problem in the prior art that has not been adequately addressed: although the device can limit the second core from springing up, it cannot limit the core from moving towards the center of the main outer sheath. Once the second core is pushed by an external force, the side strip is prone to moving towards the center of the main outer sheath and falling out of the side groove on the holder. Utility Model Content

[0004] The purpose of this invention is to provide a mineral-insulated pre-branched cable to solve the problems mentioned in the background section.

[0005] The present invention relates to a mineral-insulated pre-branched cable, comprising a main outer sheath, a branch outer sheath fixedly connected to the middle of the top of the main outer sheath, the main outer sheath and the branch outer sheath being integrally formed, a first core and a second core being provided inside the main outer sheath, one end of the second core being movably sleeved inside the branch outer sheath, a movable ring being movably sleeved in the middle of the outer wall of the branch outer sheath, a connecting block being fixedly connected to the bottom surface of the outer wall of the movable ring, slots being provided in the middle of the front and rear sides of the connecting block, and connecting boxes being fixedly connected to both ends of the top surface of the outer wall of the main outer sheath, the connecting box on the left side being vertically opposite to the connecting block, a connecting opening being provided at the top of the connecting box, the connecting opening being adapted to the connecting block, connecting rods being movably sleeved on the left and right sides of the connecting box, inserts being fixedly connected to the opposite ends of the two connecting rods, a movable groove being provided on the inner side of the movable ring, and four movable blocks being fixedly connected in a circular pattern in the middle of the surface of the branch outer sheath, all four movable blocks being movably connected in the movable groove.

[0006] In one embodiment, a fixing block is fixedly sleeved on the opposing ends of the surfaces of the two opposite connecting rods, and a spring is sleeved on the middle of the two opposite connecting rods. The opposing ends of the two springs are fixedly connected to the opposing surfaces of the two fixing blocks respectively, and the other ends of the two springs are fixedly connected to the left and right sides of the inner wall of the connecting box respectively.

[0007] In one embodiment, a pull block is fixedly connected to the side of the connecting rod away from the insert block, and the top surface of the insert block and the side away from the pull block are inclined downwards.

[0008] In one embodiment, the inner wall of the connecting box is provided with sliding grooves on both the front and back sides, and the two opposite fixed blocks are fixedly connected to the front and back sides with sliders, which are slidably connected in the sliding grooves on the front and back sides respectively.

[0009] In one embodiment, both the first and second cores are covered with insulating sleeves, and the inner walls of the main outer sleeve and the branch outer sleeve are covered with shielding layers.

[0010] The beneficial effects provided by this utility model are:

[0011] Through the cooperation of various components, the connecting block can be inserted into the connecting box, and the insert block will insert and fix the connecting block, preventing it from popping up. This ensures that when the branch outer tube is pushed towards the middle of the main outer tube, the fixing of the branch outer tube will not be released, thus improving the stability of the branch outer tube fixing. Furthermore, through the cooperation of the movable slot and the movable block, the force on the connection between the main outer tube and the branch outer tube can be reduced, avoiding the pulling force from breaking the connection between the main outer tube and the branch outer tube, which would render the cable unusable. Attached Figure Description

[0012] Figure 1 This is the front view of the present invention;

[0013] Figure 2 This is a main sectional view of the left connecting box;

[0014] Figure 3 This is a top sectional view of the connector box;

[0015] Figure 4 This is a side sectional view of the branch outer sleeve and the movable ring.

[0016] In the attached diagram: 1. Main outer tube; 2. Branch outer tube; 3. First wire core; 4. Second wire core; 5. Movable ring; 6. Connecting block; 7. Slot; 8. Connecting box; 9. Connecting opening; 10. Connecting rod; 11. Insert block; 12. Movable groove; 13. Movable block; 14. Fixed block; 15. Spring; 16. Pull block; 17. Slide groove; 18. Slider; 19. Insulating sleeve; 20. Shielding layer. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.

[0018] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0019] In one embodiment, such as Figure 1-4 As shown, a mineral-insulated pre-branched cable includes a main outer tube 1, a branch outer tube 2 fixedly connected to the middle of the top of the main outer tube 1, the main outer tube 1 and the branch outer tube 2 being integrally formed, a first wire core 3 and a second wire core 4 being provided inside the main outer tube 1, one end of the second wire core 4 being movably sleeved inside the branch outer tube 2, a movable ring 5 being movably sleeved in the middle of the outer wall of the branch outer tube 2, a connecting block 6 being fixedly connected to the bottom surface of the outer wall of the movable ring 5, and slots 7 being provided in the middle of the front and rear sides of the connecting block 6. Both ends of the top surface of the outer wall are fixedly connected to a connecting box 8. The left connecting box 8 and the connecting block 6 are arranged vertically opposite each other. The top of the connecting box 8 is provided with a connecting opening 9, which is adapted to the connecting block 6. The left and right sides of the connecting box 8 are movably sleeved with connecting rods 10. The end faces of the two connecting rods 10 facing each other are fixedly connected with inserts 11. The inner side of the movable ring 5 is provided with a movable groove 12. The middle part of the surface of the branch outer sleeve 2 is circumferentially arranged and fixedly connected with four movable blocks 13. All four movable blocks 13 are movably connected in the movable groove 12.

[0020] In order for the two insert blocks 11 to move automatically apart and then move towards each other to be inserted into the slot 7, fixing blocks 14 are fixedly sleeved on the opposing ends of the surfaces of the two connecting rods 10. Springs 15 are sleeved in the middle of the two connecting rods 10. The opposing ends of the two springs 15 are fixedly connected to the opposing surfaces of the two fixing blocks 14 respectively. The other ends of the two springs 15 are fixedly connected to the left and right sides of the inner wall of the connecting box 8 respectively.

[0021] To facilitate the removal of the insert 11 from the slot 7, a pull block 16 is fixedly connected to the side of the connecting rod 10 away from the insert 11, and the top surface of the insert 11 and the side away from the pull block 16 are inclined downwards.

[0022] In order to restrict the insertion block 11 and prevent the insertion block 11 from rotating and causing the inclined surface to no longer face upward, the front and rear sides of the inner wall of the connecting box 8 are provided with sliding grooves 17. The front and rear sides of the two opposite fixed blocks 14 are fixedly connected with sliders 18, and the front and rear sliders 18 are respectively slidably connected in the sliding grooves 17 on the front and rear sides.

[0023] In order to enable the main outer tube 1 and the branch outer tube 2 to serve the purpose of insulation and shielding, the outer surfaces of the first core 3 and the second core 4 are both covered with insulating sleeves 19, and the inner walls of the main outer tube 1 and the branch outer tube 2 are both covered with shielding layers 20.

[0024] Working Principle: When using this invention, first bend the branch outer sleeve 2 and rotate the movable ring 5 to make the connecting block 6 face downwards. Then, insert the connecting block 6 into the connecting box 8 through the connecting opening 9. After the connecting block 6 enters the connecting box 8, its bottom surface contacts the top surface of the two insert blocks 11. Since the top surface of the insert block 11 is inclined, the descent of the connecting block 6 will push the two insert blocks 11 to move apart. The insert blocks 11 drive the connecting rod 10 to move, and the connecting rod 10 drives the fixing block 14 to move. The movement of the fixing block 14 will compress the spring 15. When the bottom surface of the insert block 11 is aligned with the bottom of the slot 7, the elasticity of the spring 15 will push the fixing block 14 towards the slot 7. The fixing block 14 drives the connecting rod 10 to move, and the connecting rod 10 drives the insert blocks... 11 moves, causing the plug 11 to be inserted into the slot 7, thereby fixing the connecting block 6 and preventing it from popping up. This ensures that when the branch outer tube 2 is pushed towards the middle of the main outer tube 1, the fixing of the branch outer tube 2 will not be released, improving the stability of the fixing of the branch outer tube 2. When the branch outer tube 2 is pulled, the cooperation between the movable slot 12 and the movable block 13 prevents the branch outer tube 2 from being pulled within the movable ring 5. This ensures that the pulling force is applied to both the main outer tube 1 and the branch outer tube 2 simultaneously, preventing them from being pulled separately. This reduces the force on the connection between the main outer tube 1 and the branch outer tube 2, preventing the pulling force from breaking the connection between the main outer tube 1 and the branch outer tube 2 and rendering the cable unusable.

[0025] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0026] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A mineral-insulated pre-branched cable, characterized in that, The system includes a main outer tube (1), a branch outer tube (2) fixedly connected to the middle of the top of the main outer tube (1), the main outer tube (1) and the branch outer tube (2) are integrally formed, the main outer tube (1) is provided with a first wire core (3) and a second wire core (4) inside, one end of the second wire core (4) is movably sleeved inside the branch outer tube (2), a movable ring (5) is movably sleeved in the middle of the outer wall of the branch outer tube (2), a connecting block (6) is fixedly connected to the bottom surface of the outer wall of the movable ring (5), and slots (7) are opened in the middle of the front and rear sides of the connecting block (6), and both ends of the top surface of the outer wall of the main outer tube (1) are... A connecting box (8) is fixedly connected. The connecting box (8) on the left side is arranged opposite to the connecting block (6) vertically. A connecting opening (9) is opened on the top of the connecting box (8). The connecting opening (9) is adapted to the connecting block (6). A connecting rod (10) is movably sleeved on both the left and right sides of the connecting box (8). A plug (11) is fixedly connected to the end face of the two connecting rods (10) facing each other. A movable groove (12) is opened on the inner side of the movable ring (5). Four movable blocks (13) are fixedly connected in a circular pattern in the middle of the surface of the branch outer sleeve (2). All four movable blocks (13) are movably connected in the movable groove (12).

2. The mineral-insulated pre-branched cable as described in claim 1, characterized in that: Fixing blocks (14) are fixedly sleeved on the opposing ends of the two opposite connecting rods (10) on the left and right sides. Springs (15) are sleeved in the middle of the two opposite connecting rods (10) on the left and right sides. The opposing ends of the two springs (15) are fixedly connected to the opposing surfaces of the two fixing blocks (14) respectively. The other ends of the two springs (15) are fixedly connected to the left and right sides of the inner wall of the connecting box (8) respectively.

3. The mineral-insulated pre-branched cable as described in claim 1, characterized in that: The connecting rod (10) is fixedly connected to a pull block (16) on the side away from the insert block (11), and the top surface of the insert block (11) and the side away from the pull block (16) are inclined downwards.

4. A mineral-insulated pre-branched cable as described in claim 2, characterized in that: The inner wall of the connecting box (8) is provided with sliding grooves (17) on both the front and back sides. The two opposite fixed blocks (14) are fixedly connected with sliders (18) on the front and back sides respectively. The sliders (18) are slidably connected in the sliding grooves (17) on the front and back sides respectively.

5. A mineral-insulated pre-branched cable as described in claim 1, characterized in that: The first core (3) and the second core (4) are both covered with an insulating sleeve (19), and the inner wall of the main outer tube (1) and the inner wall of the branch outer tube (2) are both covered with a shielding layer (20).

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