Polyvinyl chloride insulated coaxial cable

Abstract

The utility model discloses a polyvinyl chloride insulated coaxial cable, which comprises a positioning shaft, the positioning shaft is used for positioning and protecting the polyvinyl chloride insulated coaxial cable, the outer wall of the positioning shaft is fixedly provided with a protection positioning mechanism, and three sides of the outer wall of the positioning shaft are respectively provided with a cable core mechanism in a clamping manner. A protection mechanism is fixedly arranged on the outer wall of the protection positioning mechanism; the protection positioning mechanism comprises three limiting frames and limiting sleeves; according to the utility model, the three limiting frames fixed on the outer wall of the positioning shaft are extruded on the outer walls of the three cable cores, the limiting sleeves are fixedly arranged on the outer walls of the limiting frames and the cable cores, and the first limiting grooves formed in the flexible pads fixed on the outer walls of the limiting frames and the second limiting grooves formed in the inner walls of the limiting sleeves are used for positioning; the positions of the positioning shaft, the limiting frame and the limiting sleeve are fixed, rotation of displacement of the cable core is reduced, the hidden danger of mutual winding in the cable is avoided, and the practicability of the polyvinyl chloride insulated coaxial cable is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of polyvinyl chloride insulated coaxial cables, in particular to a polyvinyl chloride insulated coaxial cable. Background Art

[0002] PVC insulated cable and wire products are divided into unsheathed cables for fixed wiring, sheathed cables for fixed wiring, light unsheathed flexible cables, general purpose sheathed flexible cables, installation wires and shielded wires, special purpose sheathed flexible cables, PVC insulated flame retardant / fire-resistant cables and other products.

[0003] In view of this, Chinese patent number CN203013342U proposes a copper core cross-linked polyethylene insulated PVC sheathed coaxial cable, which has a multi-layer shielding layer and a good shielding effect, so that there will be no magnetic interference between the inner conductor and the outer conductor. At the same time, the PVC outer sheath protects the cable, making the cable flame retardant. In the above patent, when the PVC insulated coaxial cable is in use, the gaps between multiple cable cores are usually positioned and protected by a filling layer, so that the multiple cable cores are easily twisted internally when performing winding and other operations, resulting in the hidden danger of mutual influence caused by the displacement and rotation of multiple cable cores, reducing the practicality of the PVC insulated coaxial cable. Therefore, a PVC insulated coaxial cable is needed. Utility Model Content

[0004] In order to solve the above problems, the purpose of the utility model is to provide a polyvinyl chloride insulated coaxial cable to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model proposes a polyvinyl chloride insulated coaxial cable, comprising a positioning shaft, the positioning shaft is used for positioning and protecting the polyvinyl chloride insulated coaxial cable, the outer wall of the positioning shaft is fixedly provided with a protective positioning mechanism, the three sides of the outer wall of the positioning shaft are all clamped with a cable core mechanism, and the outer wall of the protective positioning mechanism is fixedly provided with a protective mechanism;

[0006] The protective positioning mechanism includes three limit frames and a limit sleeve, one end of the three limit frames are respectively fixedly connected to the three sides of the outer wall of the positioning shaft, one side of the three limit frames is fixedly provided with a flexible pad, one side of the three flexible pads is provided with a first limit groove, the inner wall of the limit sleeve is provided with a second limit groove, the outer walls of the three flexible pads are respectively engaged with the second limit groove of the inner wall of the limit sleeve through the three first limit grooves, and the outer wall of the limit sleeve is fixedly provided with an isolation sleeve.

[0007] In one example, the protection mechanism includes an outer sheath, the inner wall of the outer sheath is fixedly provided with a steel belt armor sleeve, the inner wall of the steel belt armor sleeve is fixedly connected to the outer wall of the isolation sleeve, a plurality of buffer grooves are opened inside the outer sheath, a plurality of guide strips are clamped on the outer wall of the outer sheath, a guide sleeve is provided in the middle position of the outer wall of the outer sheath, and the outer walls of the plurality of guide strips are connected to the outer wall of the guide sleeve.

[0008] In one example, a guide rod is fixedly provided at the bottom end of the guide sleeve.

[0009] In one example, the cable core structure includes a conductor core, a conductor shielding sleeve is fixedly provided on the outer wall of the conductor core, an insulating sleeve is fixedly provided on the outer wall of the conductor shielding sleeve, an insulating shielding sleeve is fixedly provided on the outer wall of the insulating sleeve, and a steel belt shielding sleeve is fixedly provided on the outer wall of the insulating shielding sleeve.

[0010] In one example, the inner walls of the three insulating sleeves are each provided with a plurality of insulating air layers.

[0011] In one example, two ends of the outer walls of the three steel belt shielding sleeves are in contact with two ends of the outer walls of the three limiting frames respectively.

[0012] In one example, one end of the outer walls of the three steel belt shielding sleeves are in contact with the inner wall of the limiting sleeve.

[0013] The polyvinyl chloride insulated coaxial cable proposed by the utility model can bring the following beneficial effects:

[0014] 1. The polyvinyl chloride insulated coaxial cable is squeezed on the outer walls of three cable cores by three limit frames fixed on the outer wall of the positioning shaft, and a limit sleeve is fixed on the outer wall of the limit frame and the cable core. The first limit groove is formed on the flexible pad fixed on the outer wall of the limit frame and the second limit groove is formed on the inner wall of the limit sleeve, so that the positions of the positioning shaft, the limit frame and the limit sleeve are fixed, the rotation of the displacement of the cable core is reduced, the hidden danger of mutual entanglement inside the cable is avoided, and the practicality of the polyvinyl chloride insulated coaxial cable is increased.

[0015] 2. The polyvinyl chloride insulated coaxial cable has a conductor shielding sleeve, an insulating sleeve, an insulating shielding sleeve and a steel belt shielding sleeve fixed in sequence on the outer wall of the conductor, and a plurality of insulating air layers are opened in the middle of the insulating sleeve to increase the insulating effect of the insulating sleeve and protect the cable core from vibration buffering. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal distribution structure of the cable of the utility model;

[0019] Figure 3 This is a schematic diagram of the positioning structure of the positioning shaft, the limiting frame, the flexible pad and the limiting sleeve of the utility model;

[0020] Figure 4 This is a schematic diagram of the outer sheath structure of the utility model.

[0021] In the figure: 1. outer sheath; 2. steel belt armored sheath; 3. isolation sheath; 4. limiting sheath; 5. steel belt shielding sheath; 6. insulating shielding sheath; 7. insulating sheath; 8. conductor shielding sheath; 9. conductor core; 10. positioning shaft; 11. limiting frame; 12. flexible pad; 13. first limiting groove; 14. second limiting groove; 15. insulating air layer; 16. buffer groove; 17. guide strip; 18. guide sheath; 19. guide rod. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0023] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] The embodiments are as follows. The utility model provides Figure 1-4 The polyvinyl chloride insulated coaxial cable shown includes a positioning shaft 10, which is used for positioning and protecting the polyvinyl chloride insulated coaxial cable. A protective positioning mechanism is fixedly arranged on the outer wall of the positioning shaft 10, and a cable core mechanism is clamped on three sides of the outer wall of the positioning shaft 10. A protective mechanism is fixedly arranged on the outer wall of the protective positioning mechanism.

[0025] The protective positioning mechanism includes three limit frames 11 and a limit sleeve 4, one end of the three limit frames 11 is fixedly connected to the three sides of the outer wall of the positioning shaft 10 respectively, one side of the three limit frames 11 is fixedly provided with a flexible pad 12, one side of the three flexible pads 12 is provided with a first limit groove 13, the inner wall of the limit sleeve 4 is provided with a second limit groove 14, the outer walls of the three flexible pads 12 are respectively engaged with the second limit groove 14 of the inner wall of the limit sleeve 4 through the three first limit grooves 13, and the outer wall of the limit sleeve 4 is fixedly provided with an isolation sleeve 3, through the positioning of the first limit groove 13 provided on the flexible pad 12 fixed on the outer wall of the limit frame 11 and the second limit groove 14 provided on the inner wall of the limit sleeve 4, the position of the positioning shaft 10 and the limit frame 11 and the limit sleeve 4 is fixed, the rotation of the displacement of the cable core is reduced, the hidden danger of mutual entanglement inside the cable is avoided, and the practicality of the polyvinyl chloride insulated coaxial cable is increased.

[0026] Furthermore, the protection mechanism includes an outer sheath 1, the inner wall of the outer sheath 1 is fixedly provided with a steel belt armor sleeve 2, the inner wall of the steel belt armor sleeve 2 is fixedly connected to the outer wall of the isolation sleeve 3, a plurality of buffer grooves 16 are opened inside the outer sheath 1, a plurality of guide strips 17 are clamped on the outer wall of the outer sheath 1, a guide sleeve 18 is sleeved in the middle position of the outer wall of the outer sheath 1, the outer walls of the plurality of guide strips 17 are connected to the outer wall of the guide sleeve 18, and a plurality of insulating air layers 15 are opened in the middle position of the insulating sleeve 7 to increase the insulation effect of the insulating sleeve 7 and protect the cable core from vibration buffering.

[0027] A guide rod 19 is fixedly provided at the bottom end of the guide sleeve 18 .

[0028] Furthermore, the cable core structure includes a conductor core 9, a conductor shielding sleeve 8 is fixedly provided on the outer wall of the conductor core 9, an insulating sleeve 7 is fixedly provided on the outer wall of the conductor shielding sleeve 8, an insulating shielding sleeve 6 is fixedly provided on the outer wall of the insulating sleeve 7, and a steel belt shielding sleeve 5 is fixedly provided on the outer wall of the insulating shielding sleeve 6.

[0029] The inner walls of the three insulating sleeves 7 are each provided with a plurality of insulating air layers 15 .

[0030] Furthermore, two ends of the outer walls of the three steel belt shielding sleeves 5 are in contact with two ends of the outer walls of the three limiting frames 11 respectively.

[0031] One end of the outer walls of the three steel belt shielding sleeves 5 are in contact with the inner wall of the limiting sleeve 4 .

[0032] Working principle: When it is necessary to use polyvinyl chloride insulated coaxial cable, when the staff is making the polyvinyl chloride insulated coaxial cable, the outer wall of the conductor core 9 is fixed with a conductor shielding sleeve 8, an insulating sleeve 7, an insulating shielding sleeve 6 and a steel belt shielding sleeve 5 in sequence, and a plurality of insulating air layers 15 are opened in the middle position of the insulating sleeve 7 to increase the insulation effect of the insulating sleeve 7 and protect the cable core from vibration buffering. A positioning shaft 10 is fixed in the middle position of the three cable cores, and three limit frames 11 fixed on the outer wall of the positioning shaft 10 are squeezed on the outer walls of the three cable cores. A limit sleeve 4 is fixed on the limit frame 11 and the outer wall of the cable core. The first limit groove 13 opened on the flexible pad 12 fixed on the outer wall of the limit frame 11 and the second limit groove 14 opened on the inner wall of the limit sleeve 4 are positioned, so that the positioning shaft 10 and the limit frame 11 are fixed with the limit sleeve 4, so that the position of the limit shaft 10 and the limit frame 11 are fixed with the limit sleeve 4, the rotation of the displacement of the cable core is reduced, the hidden danger of mutual entanglement inside the cable is avoided, and the practicality of the polyvinyl chloride insulated coaxial cable is increased.

[0033] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0034] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. Polyvinyl chloride insulated coaxial cable, including: A positioning shaft (10), the positioning shaft (10) is used for positioning and protecting a polyvinyl chloride insulated coaxial cable, a protective positioning mechanism is fixedly provided on the outer wall of the positioning shaft (10), a cable core mechanism is clamped on three sides of the outer wall of the positioning shaft (10), and a protective mechanism is fixedly provided on the outer wall of the protective positioning mechanism; The protective positioning mechanism comprises three limit frames (11) and a limit sleeve (4); one end of the three limit frames (11) is respectively fixedly connected to the three sides of the outer wall of the positioning shaft (10); one side of the three limit frames (11) is fixedly provided with a flexible pad (12); one side of the three flexible pads (12) is provided with a first limit groove (13); the inner wall of the limit sleeve (4) is provided with a second limit groove (14); the outer walls of the three flexible pads (12) are respectively engaged with the second limit groove (14) of the inner wall of the limit sleeve (4) through the three first limit grooves (13); and the outer wall of the limit sleeve (4) is fixedly provided with an isolation sleeve (3).

2. The polyvinyl chloride insulated coaxial cable according to claim 1, characterized in that: The protection mechanism comprises an outer sheath (1), the inner wall of the outer sheath (1) is fixedly provided with a steel belt armor sleeve (2), the inner wall of the steel belt armor sleeve (2) is fixedly connected to the outer wall of the isolation sleeve (3), a plurality of buffer grooves (16) are provided inside the outer sheath (1), a plurality of guide strips (17) are snap-fitted on the outer wall of the outer sheath (1), a guide sleeve (18) is sleeved at the middle position of the outer wall of the outer sheath (1), and the outer walls of the plurality of guide strips (17) are all connected to the outer wall of the guide sleeve (18).

3. The polyvinyl chloride insulated coaxial cable according to claim 2, characterized in that: A guide rod (19) is fixedly provided at the bottom end of the guide sleeve (18).

4. The polyvinyl chloride insulated coaxial cable according to claim 1, characterized in that: The cable core structure comprises a conductor core (9), a conductor shielding sleeve (8) is fixedly provided on the outer wall of the conductor core (9), an insulating sleeve (7) is fixedly provided on the outer wall of the conductor shielding sleeve (8), an insulating shielding sleeve (6) is fixedly provided on the outer wall of the insulating sleeve (7), and a steel belt shielding sleeve (5) is fixedly provided on the outer wall of the insulating shielding sleeve (6).

5. The polyvinyl chloride insulated coaxial cable according to claim 4, characterized in that: The inner walls of the three insulating sleeves (7) are each provided with a plurality of insulating air layers (15).

6. The polyvinyl chloride insulated coaxial cable according to claim 4, characterized in that: Two ends of the outer walls of the three steel belt shielding sleeves (5) are in contact with two ends of the outer walls of the three limiting frames (11) respectively.

7. The polyvinyl chloride insulated coaxial cable according to claim 4, characterized in that: One end of the outer walls of the three steel belt shielding sleeves (5) are in contact with the inner wall of the limiting sleeve (4).

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