Cable thermal shrinkage type terminal head

Abstract

The utility model relates to the technical field of cable thermal shrinkage type terminal heads, in particular to a cable thermal shrinkage type terminal head, which comprises a thermal shrinkage type terminal head main body, insulating tubes distributed in an array are arranged on the upper side of the thermal shrinkage type terminal head main body, and wiring terminals are connected to the upper side of the thermal shrinkage type terminal head main body in an array mode. The upper side of the thermal shrinkage type terminal head main body is fixedly connected with support plates which are distributed in an array, an insulating tube is positioned through the telescopic pressing plate and the rubber block, so that the insulating tube on the cable thermal shrinkage type terminal head can be more stable and reliable, and then the supporting concave plate and the U-shaped clamping plate can be used for supporting the thermal shrinkage type terminal head. The stability of the thermal shrinkage type terminal head is ensured, the cable is prevented from being exposed due to the fact that the thermal shrinkage type terminal head is easy to separate, the safety of the cable thermal shrinkage type terminal head in use is improved, and the shielding sleeve on the circular ring is used for protecting the thermal shrinkage type terminal head, so that the protection capability of the cable thermal shrinkage type terminal head is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable heat shrinkable terminal heads, in particular to a cable heat shrinkable terminal head. Background Art

[0002] Cable heat shrinkable terminal head, also known as heat shrinkable cable head, is a part widely used on the terminal of cross-linked cables or oil-immersed cables with voltage levels of 35KV and below. It uses heat shrinkable tape material to cover the heated plastic pipe on the heating element. Through the stretching and cooling process of the mold, it forms a well-sealed electrical connection device, thereby protecting the cable from the influence of the external environment and moisture, ensuring the safe operation of the cable.

[0003] The prior art discloses patent application number "CN202320495603.8", which is a heat-resistant and deformation-resistant heat-shrinkable cable head, including a cable head body and a connecting mechanism. A heat-shrinkable mechanism for heat-shrinkage protection is provided on the upper part of the outside of the cable head body. The heat-shrinkable cable head body can be separated through the first pipe clamp, the connecting support rod and the second pipe clamp, thereby avoiding the problem of heat shrinkage deformation caused by heat collection and heating when the cables are gathered together.

[0004] This heat shrinkable cable head can only avoid heat shrinkage deformation. In actual use, the insulating tube used to seal the cable on the heat shrinkable cable head mentioned above is prone to aging after long-term use. At the same time, when the cable is pulled, the insulating tube on the cable is easy to detach and cause the cable to be exposed, thereby affecting the stability and safety of the cable heat shrinkable terminal head during use, making it inconvenient to use. Utility Model Content

[0005] The purpose of the utility model is to provide a cable heat shrinkable terminal head to solve the problems raised in the above background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A heat-shrinkable cable terminal head includes a heat-shrinkable terminal head body, an insulating tube arranged in an array is mounted on the upper side of the heat-shrinkable terminal head body, a terminal block is connected to the upper side of the heat-shrinkable terminal head body in an array, a support plate arranged in an array is fixedly connected to the upper side of the heat-shrinkable terminal head body, and a retractable pressure plate for fixing the insulating tube is slidably connected to one side of the support plate;

[0008] Two first springs are connected between the telescopic pressure plate and the support plate. A rotary plate is rotatably connected to the middle part of the upper side of the heat-shrinkable terminal head body. An array of rubber blocks is installed on the lower side of the rotary plate. An insert plate is clamped on the upper side of the support plate. A supporting concave plate is fixedly installed on the upper side of the insert plate. Two U-shaped clamping plates are clamped on the upper side of the supporting concave plate.

[0009] Preferably, a circular ring is fixedly provided on the outer surface of the heat-shrinkable terminal head body, and a shielding sleeve is installed on the upper side of the circular ring.

[0010] Preferably, a rubber clip for fixing the ring is fixedly connected to the outer surface of the heat shrinkable terminal head body, and a rain skirt is connected to the outer surface of the insulating tube in an array.

[0011] Preferably, a connecting ring is fixedly connected to the outer surface of the insulating tube, an array of rubber strips are installed on the outer surface of the connecting ring, and a sealing tube is sleeved on the outer surface of the support plate.

[0012] Preferably, one side of the telescopic pressure plate passes through the support plate and extends to the other side of the support plate, and one side of the support plate is threadedly connected with a fastening bolt for fixing the inserting plate.

[0013] Preferably, a positioning groove is provided inside the circular ring, the positioning groove is adapted to the rubber clip, and the outer surface of the rubber clip is snap-fitted to the interior of the circular ring via the positioning groove.

[0014] Beneficial effects of the utility model:

[0015] 1. The utility model uses the telescopic pressing plate and rubber block to position the insulating tube, making the insulating tube on the cable heat shrinkable terminal head more stable and reliable. Subsequently, the supporting concave plate and U-shaped card plate can be used to support the heat shrinkable terminal head, ensuring the stability of the heat shrinkable terminal head, preventing it from being easily detached and causing the cable to be exposed, and improving the safety of the cable heat shrinkable terminal head when in use;

[0016] 2. The utility model further increases the protection capability of the heat shrinkable cable terminal head by allowing the shielding sleeve on the circular ring to protect the heat shrinkable cable terminal head. At the same time, the rubber strip on the connecting ring can be used to lock the sealing tube to wrap the connection of the terminal block, thereby ensuring the safe use of the heat shrinkable cable terminal head. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, it is possible for a person skilled in the art to derive other drawings based on these drawings without inventive effort.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This utility model Figure 1 Schematic diagram of the structure of the middle telescopic pressure plate and the first spring;

[0020] Figure 3 This utility model Figure 2Installation diagram of the middle supporting concave plate and U-shaped pallet;

[0021] Figure 4 This utility model Figure 1 Schematic diagram of the structure of the middle ring and the shielding sleeve;

[0022] Figure 5 This utility model Figure 1 Schematic diagram of the structure of the connecting ring and rubber strip;

[0023] The reference numerals in the figures are as follows:

[0024] 1. Heat-shrinkable terminal head body; 2. Insulating tube; 3. Support plate; 4. Telescopic pressure plate; 5. First spring; 6. Insert plate; 7. Fastening bolt; 8. Support concave plate; 9. U-shaped clamping plate; 10. Rotary plate; 11. Rubber block; 12. Ring; 13. Shielding sleeve; 17. Rain skirt; 18. Terminal block; 19. Connecting ring; 20. Sealing tube; 21. Rubber strip; 66. Positioning groove; 88. Rubber clamping ring. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] like Figures 1 to 5 As shown, a heat-shrinkable cable terminal head includes a heat-shrinkable terminal head body 1, an array of insulating tubes 2 are installed on the upper side of the heat-shrinkable terminal head body 1, a terminal block 18 is connected to the upper side of the heat-shrinkable terminal head body 1 in an array, a support plate 3 is fixedly connected to the upper side of the heat-shrinkable terminal head body 1, and a retractable pressure plate 4 for fixing the insulating tube 2 is slidably connected to one side of the support plate 3;

[0027] Two first springs 5 are connected between the telescopic pressure plate 4 and the support plate 3. A rotary plate 10 is rotatably connected to the middle part of the upper side of the heat-shrinkable terminal head body 1. An array of distributed rubber blocks 11 are installed on the lower side of the rotary plate 10. By installing and using the telescopic pressure plate 4 and the rubber block 11, the two can together squeeze and position the heat-shrinkable insulating tube 2, so that the insulating tube 2 can wrap the cable more firmly, making it less likely to fall off, making the cable heat-shrinkable terminal head more stable and safe to use. The upper side of the support plate 3 is clamped with a plug-in plate 6, and a supporting concave plate 8 is fixedly installed on the upper side of the plug-in plate 6. Two U-shaped card plates 9 are clamped on the upper side of the supporting concave plate 8. The U-shaped card plate 9 can increase the connectivity between the three supporting concave plates 8, so that the supporting concave plates 8 can be used stably.

[0028] A circular ring 12 is fixedly provided on the outer surface of the heat shrinkable terminal head body 1 , and a shielding sleeve 13 is installed on the upper side of the circular ring 12 .

[0029] The outer surface of the heat shrinkable terminal head body 1 is fixedly connected to a rubber clip 88 for fixing the ring 12, and the outer surface array of the insulating tube 2 is connected to a rain skirt 17. The rain skirt 17 can prevent rainwater, enhance the creepage distance of the cable, and improve the safety performance of the cable heat shrinkable terminal head.

[0030] The outer surface of the insulating tube 2 is fixedly connected with a connecting ring 19 , the outer surface of the connecting ring 19 is installed with rubber strips 21 distributed in an array, and the outer surface of the support plate 3 is sleeved with a sealing tube 20 .

[0031] One side of the telescopic pressure plate 4 passes through the support plate 3 and extends to the other side of the support plate 3. One side of the support plate 3 is threadedly connected with a fastening bolt 7 for fixing the plug plate 6. Through the setting of the fastening bolt 7, the fastening bolt 7 can be used to squeeze and fix the plug plate 6, so that the supporting concave plate 8 can more firmly support the heat shrinkable terminal head, ensuring the stability of the use of the heat shrinkable terminal head.

[0032] A positioning groove 66 is formed inside the circular ring 12 , and the positioning groove 66 is adapted to the rubber snap ring 88 . The outer surface of the rubber snap ring 88 is snap-fitted to the interior of the circular ring 12 via the positioning groove 66 .

[0033] The working principle of the cable heat shrinkable terminal head provided by the utility model is as follows:

[0034] By allowing the three retractable pressure plates 4 equipped with the first spring 5 to be squeezed on the insulating tube 2, the retractable pressure plate 4 with elastic force can be used to fix the insulating tube 2, and then the rotary plate 10 is rotated so that the three rubber blocks 11 on the rotary plate 10 can be positioned on the insulating tube 2 at the same time, so as to further position the insulating tube 2 on the cable heat shrinkable terminal head and ensure the stability of the insulating tube 2, and then the three plugging plates 6 are respectively inserted into the top of the three support plates 3, so that the three plugging plates 6 can drive the three supporting concave plates 8 to be positioned at the cable heat shrinkable terminal head for supporting the cable, and at the same time, the three U-shaped card plates 9 are clamped onto the three supporting concave plates 8 to increase the supporting effect of the supporting concave plates 8, ensure the stability of the heat shrinkable terminal head, avoid its easy detachment and cause the cable to be exposed, and improve the safety of the cable heat shrinkable terminal head when in use;

[0035] By sliding the circular ring 12 from the top of the heat shrinkable terminal head body 1 to the bottom of the heat shrinkable terminal head body 1, the rubber snap ring 88 can be snapped into the positioning groove 66 of the rubber snap ring 88 to snap and fix the circular ring 12. In this way, the shielding sleeve 13 on the circular ring 12 can be protected at the heat shrinkable terminal head body 1, further increasing the protection capability of the cable heat shrinkable terminal head. Then the sealing tube 20 is sleeved onto the terminal 18. At this time, the rubber strip 21 on the connecting ring 19 can play the role of limiting the sealing tube 20 to lock the sealing tube 20 so as to wrap the connection of the terminal 18 and ensure the safe use of the cable heat shrinkable terminal head.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A cable heat shrinkable terminal head, comprising a heat shrinkable terminal head body (1), characterized in that: An array of insulating tubes (2) is installed on the upper side of the heat-shrinkable terminal head body (1); a wiring terminal (18) is connected in an array to the upper side of the heat-shrinkable terminal head body (1); a support plate (3) distributed in an array is fixedly connected to the upper side of the heat-shrinkable terminal head body (1); and a telescopic pressing plate (4) for fixing the insulating tube (2) is slidably connected to one side of the support plate (3); Two first springs (5) are connected between the telescopic pressure plate (4) and the support plate (3); a rotary plate (10) is rotatably connected to the middle part of the upper side of the heat-shrinkable terminal head body (1); rubber blocks (11) distributed in an array are installed on the lower side of the rotary plate (10); an insert plate (6) is clamped on the upper side of the support plate (3); a supporting concave plate (8) is fixedly installed on the upper side of the insert plate (6); and two U-shaped clamping plates (9) are clamped on the upper side of the supporting concave plate (8).

2. A cable heat shrinkable terminal according to claim 1, characterized in that: A circular ring (12) is fixedly provided on the outer surface of the heat-shrinkable terminal head body (1), and a shielding sleeve (13) is installed on the upper side of the circular ring (12).

3. A cable heat shrinkable terminal according to claim 2, characterized in that: The outer surface of the heat shrinkable terminal head body (1) is fixedly connected to a rubber clamping ring (88) for fixing the circular ring (12), and the outer surface of the insulating tube (2) is connected to a rain skirt (17) in an array.

4. A cable heat shrinkable terminal according to claim 1, characterized in that: The outer surface of the insulating tube (2) is fixedly connected with a connecting ring (19), the outer surface of the connecting ring (19) is installed with rubber strips (21) distributed in an array, and the outer surface of the support plate (3) is sleeved with a sealing tube (20).

5. The cable heat shrinkable terminal according to claim 1, characterized in that: One side of the telescopic pressure plate (4) passes through the support plate (3) and extends to the other side of the support plate (3); one side of the support plate (3) is threadedly connected with a fastening bolt (7) for fixing the inserting plate (6).

6. The cable heat shrinkable terminal head according to claim 3, characterized in that: A positioning groove (66) is provided inside the circular ring (12), and the positioning groove (66) is adapted to the rubber snap ring (88). The outer surface of the rubber snap ring (88) is snap-connected with the inside of the circular ring (12) through the positioning groove (66).

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