Electric heating cable end sealer

Abstract

The present invention relates to a first sealer body and a second sealer body, the first sealer body and the second sealer body are fixedly connected, a space for accommodating an electric heating tape is provided inside the first sealer body and the second sealer body, one end of the first sealer body is closed and the other end is open, both ends of the second sealer body are open, the electric heating tape can be inserted into the first sealer body and the second sealer body from the opening at one end of the second sealer, an internal rubber ring is provided inside the first sealer body, the internal rubber ring is provided with a through hole for the electric heating tape to pass through, the shape of the through hole is adapted to the cross section of the electric heating tape, a raised clamping tooth is provided on the inner side of the first sealer body or the second sealer body, corresponding to the clamping tooth position, a spring piece is provided on the other side of the electric heating tape, and the spring piece and the clamping tooth clamp the electric heating tape. The electric heating tape end sealer is used for the rapid closure of the end of the electric heating tape, and does not need to be sealed with glue or resin.

Description

Technical Field

[0001] The invention relates to the field of electrical insulation, in particular to an electric heating cable end sealer. Background Art

[0002] The common electric heating tape sealers on the market have the first problem: when they are used on electric heating tapes with smooth outer sheaths (such as silicone, FEP and other materials), they are easy to fall off and cannot meet the minimum tear strength of electric heating tapes required by industry standards. The second problem is that there are no card positions or slots on its surface, and the electric heating tape is wrapped around the pipe, and it is impossible to fix the sealer with a cable tie to prevent it from falling off. The third problem is that when the electric heating tape sealer is installed on the pipe, because it is close to the surface of the pipe, the heat inside the pipe is easily transferred to the sealer body. The fourth problem is that the existing products on the market have a single size range of use, and a sealer of one size can only be used for a heating tape of one size. It cannot be used for different cable sizes from different suppliers. Summary of the invention

[0003] In view of the technical problems existing in the prior art, the purpose of the present invention is to provide an electric heating tape end sealer, which is used for the rapid closure of the end of a self-regulating or constant power electric heating tape, and does not require sealing with glue or resin.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] The electric heating tape end sealer includes a first sealer body and a second sealer body. The first sealer body is made of high-temperature resistant plastic material. The first sealer body and the second sealer body are fixedly connected. Space for accommodating the electric heating tape is provided inside the first sealer body and the second sealer body. One end of the first sealer body is closed and the other end is open. Both ends of the second sealer body are open. The electric heating tape can be inserted into the first sealer body and the second sealer body from the opening at one end of the second sealer. An internal rubber ring is provided in the first sealer body. The internal rubber ring is provided with a through hole for the electric heating tape to pass through. The shape of the through hole is adapted to the cross-section of the electric heating tape. A raised clamping tooth is provided on the inner side of the first sealer body or the second sealer body. Corresponding to the clamping tooth position, a spring piece is provided on the other side of the electric heating tape. The spring piece and the clamping tooth clamp the electric heating tape.

[0006] Furthermore, the spring sheet is provided with a clamping portion, which is clamped to the edge of the second sealer body, and the spring sheet is located inside the second sealer body.

[0007] Furthermore, a U-shaped slot is provided in the space enclosed by the first sealer body and the second sealer body. The U-shaped slot is made of high-temperature resistant plastic material. The electric heating tape passes through the U-shaped slot. The teeth are arranged on the inner bottom surface of the U-shaped slot. The bottom width of the U-shaped slot is adapted to the width of the electric heating tape.

[0008] Furthermore, a portion of the second sealer body is inserted into the first sealer body from the open end of the first sealer body. Corresponding to the position of the latch tooth, the first sealer body is provided with a first through hole, the second sealer body is provided with a second through hole, and a fastening nut is provided at the second through hole. The fastening screw passes through the first through hole and is fixedly connected to the fastening nut.

[0009] Furthermore, the fastening screw is a butterfly screw, which includes a screw body and a hand screw head connected together, and a groove is provided at the connection between the hand screw head and the screw body.

[0010] Furthermore, a plurality of annular rubber ring lips are provided at the contact point between the inner rubber ring and the electric heating belt, and the rubber ring lips are inclined toward the end of the electric heating belt.

[0011] Furthermore, arc-shaped teeth are provided at the contact point between the spring piece and the electric heating belt.

[0012] Furthermore, the outer top surface of the first sealer body is provided with a concave groove for clamping and installing the cable tie.

[0013] Furthermore, the bottom of the first sealer body is provided with wings protruding from the bottom surface.

[0014] Furthermore, the first sealer body is filled with silicone gel.

[0015] In general, the present invention has the following advantages:

[0016] The electric heating cable end sealer is used for the quick closing of the end of the electric heating cable, and there is no need to use glue or resin to seal the end of the self-adjusting or constant power electric heating cable. The first sealer body and the second sealer body can be immediately buckled and clamped on the electric heating cable, which is easy to install. Once installed, it can provide an IP67 seal at the end of the electric heating cable with good reliability. Since the internal rubber ring is separated from the first sealer body and the second sealer body, the corresponding internal rubber ring through-hole size can be selected according to the size of the electric heating cable. The size range of the internal rubber ring through-hole allows it to be used on most existing electric heating cables, which has a wider adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall working state structure of the electric heating cable end sealer of the present invention.

[0018] Figure 2This is a schematic diagram of the working state structure of the electric heating cable end sealer of the present invention from another angle.

[0019] Figure 3 It is an enlarged structural schematic diagram of the end sealer of the electric heating belt of the present invention.

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the end sealer of the electric heating belt of the present invention.

[0021] Figure 5 It is a schematic cross-sectional structure diagram of the electric heating cable end sealer of the present invention with the thumb screw head removed.

[0022] Figure 6 It is a schematic diagram of the exploded structure of the end sealer of the electric heating belt of the present invention.

[0023] Figure 7 It is a schematic diagram of the partial cross-sectional structure of the butterfly screw of the end sealer of the electric heating belt of the present invention.

[0024] Figure 8 It is a schematic structural diagram of U-shaped slots of multiple sizes for the end sealer of the electric heating cable of the present invention.

[0025] Fig. 9 This is a schematic structural diagram of the internal rubber rings of different sizes of the end sealer of the electric heating cable of the present invention.

[0026] Fig.10 It is a schematic cross-sectional structure diagram of another embodiment of the electric heating tape end sealer of the present invention.

[0027] in Figures 1 to 10 Included are:

[0028] 1——first sealer body, 2——recessed card slot, 3——internal rubber ring, 4——U-shaped card slot, 5——clamping teeth, 6——second sealer body, 7——fastening nut, 8——fastening screw, 9——groove, 10——spring sheet, 11——arc-shaped strip teeth, 12——electric heating tape, 13——installation tie, 14——pipeline, 15——rubber ring lip, 16——silicon gel, 17——through hole, 18——clamping portion, 19——first through hole, 20——second through hole, 21——wing. DETAILED DESCRIPTION

[0029] The present invention will be described in further detail below.

[0030] Embodiment 1,

[0031] like Figures 1 to 6As shown, the end sealer of the electric heating belt 12 includes a first sealer body 1 and a second sealer body 6. The first sealer body 1 is made of a plastic material that is resistant to high temperatures and highly flame retardant. For example, PA66 or PPS with glass fiber. The first sealer body 1 and the second sealer body 6 are fixedly connected, and a space for accommodating the electric heating belt 12 is provided inside the first sealer body 1 and the second sealer body 6. A U-shaped card slot 4 is provided in the space surrounded by the first sealer body 1 and the second sealer body 6. It is used to fix electric heating belts 12 of different sizes. The U-shaped card slot 4 is made of a plastic material that is resistant to high temperatures and highly flame retardant. For example, PA66 or PPS with glass fiber. The electric heating belt 12 passes through the U-shaped card slot 4, and the card teeth 5 are arranged on the inner bottom surface of the U-shaped card slot 4. Corresponding to the position of the card teeth 5, a spring piece 10 is provided on the other side of the electric heating belt 12, and the spring piece 10 and the card teeth 5 clamp the electric heating belt 12. The contact between the spring piece 10 and the electric heating belt 12 is provided with an arc-shaped strip tooth 11. The arc-shaped teeth 11 cooperate with the spring sheet 10 to further compress the electric heating belt 12. The spring sheet 10 is made of a high-temperature resistant and highly elastic metal material, such as stainless steel. The spring sheet 10 is provided with a clamping portion 18, which is clamped to the edge of the second sealer body 6. The spring sheet 10 is located inside the second sealer body 6. The clamping teeth 5 are used to cooperate with the spring sheet 10 above to clamp the surface of the electric heating belt 12. Figure 8 As shown, the bottom width of the U-shaped slot 4 is adapted to the width of the electric heating tape 12. The U-shaped slot 4 has a variety of sizes to accommodate electric heating tapes 12 of different size ranges. The first sealer body 1 is closed at one end and open at the other end, and both ends of the second sealer body 6 are open. The electric heating tape 12 can be inserted into the first sealer body 1 and the second sealer body 6 from the opening at one end of the second sealer. An internal rubber ring 3 is provided in the first sealer body 1. It is used to seal the end of the electric heating tape 12 and provide IP67 protection performance. It is made of highly flexible silicone or other similar artificial rubber. As Fig. 9 As shown, the inner rubber ring 3 is provided with a through hole 17 through which the electric heating cable 12 passes, and the shape of the through hole 17 is adapted to the cross section of the electric heating cable 12. The through hole 17 of the inner rubber ring 3 has a variety of sizes to adapt to electric heating cables 12 of different size ranges.

[0032] A portion of the second sealer body 6 is inserted into the first sealer body 1 from the open end of the first sealer body 1. Corresponding to the position of the latch tooth 5, the first sealer body 1 is provided with a first through hole 19, the second sealer body 6 is provided with a second through hole 20, and a fastening nut 7 is provided at the second through hole 20. The fastening nut 7 is a metal nut, which is made into one piece with the second sealer body 6 by injection molding, so that a large fastening force can be provided. The fastening screw 8 passes through the first through hole 19 and is fixedly connected to the fastening nut 7. It is used to squeeze the spring piece 10 and clamp the electric heating belt 12. The second sealer body 6 can also be made of metal, such as brass, and then threads are directly made on the metal second sealer body 6, so that the fastening nut 7 insert is no longer needed. The fastening screw 8 is a butterfly screw, and the butterfly screw includes a screw body and a hand screw head connected together. The hand screw head is made of plastic, and the screw body is made of metal. Figure 7 As shown, a groove 9 is provided at the connection between the hand screw head and the screw body. Figure 5 As shown, the main body of the screw is retained in the fastening nut 7. The butterfly screw is tightened with standard torque to squeeze the spring 10, thereby clamping the electric heating cable 12. In this way, the minimum pulling force of the electric heating cable 12 required by the industry standard can be withstood, and heating cables of different specifications from different suppliers can be used on the same sealer.

[0033] A plurality of annular rubber ring lips 15 are provided at the contact point between the inner rubber ring 3 and the electric heating cable 12, and the rubber ring lips 15 are inclined toward the end of the electric heating cable 12. The design of the rubber ring lips 15 allows a large tolerance range for the diameter of the electric heating cable 12, with a good inlet protection level.

[0034] The outer top surface of the first sealer body 1 is provided with a recessed slot 2 for clamping the mounting tie 13. When the mounting tie 13 is used to fix the sealer on the pipe 14, the mounting tie 13 does not slip off the sealer. The bottom of the first sealer body 1 is provided with wings 21 protruding from the bottom surface. It is used to prevent the first sealer body 1 from contacting the pipe 14, which helps to cool it and not be heated by the pipe 14. The first sealer body 1 is filled with silicone gel 16. It increases the electrical insulation between the two bare ends of the heating cable.

[0035] When in use, first put the internal rubber ring 3 that matches the size of the electric heating tape 12 into the first sealer body 1, the clamping part 18 of the spring piece 10 clamps the edge of the second sealer body 6, the spring piece 10 is inserted into the second sealer body 6, and the U-shaped card groove 4 that matches the size of the electric heating tape 12 is put into the second sealer body 6, opposite to the position of the spring piece 10, and the second sealer body 6 is inserted into the first sealer body 1, so that the first through hole 19 and the second through hole 20 are aligned, and the electric heating tape 12 is inserted from one end of the second sealer body 6 until the electric heating tape 12 touches one end of the first sealer body 1, and the butterfly screw is screwed into the first through hole 19 and tightened with the fastening nut 7. When the fastening screw 8 compresses the spring piece 10 to tighten the electric heating tape 12 to reach the required torque value, the groove 9 will break, the hand-tightening screw head is separated from the screw body, and the screw body remains in the fastening nut 7 to provide a continuous pressure force to the spring piece 10.

[0036] Embodiment 2,

[0037] The main structure of this embodiment is the same as that of embodiment 1, and the similarities are not repeated here. The differences are as follows:

[0038] The inner side of the first sealer body 1 or the second sealer body 6 is provided with a raised latch tooth 5. This embodiment means that the U-shaped latch groove 4 is made into an integral form with the first sealer or the second sealer. Although the U-shaped latch groove 4 of different sizes cannot be replaced according to the size of the electric heating belt 12, it can still achieve quick sealing without the need for glue and other beneficial effects.

[0039] Embodiment 3,

[0040] The main structure of this embodiment is the same as that of embodiment 1, and the similarities are not repeated here. The differences are as follows:

[0041] like Fig.10 As shown, the first sealer body 1 is connected to the second sealer body 6 in a buckle form. The second sealer body 6 can still be provided with structures such as springs 10 and latch teeth 5 to enhance the fixing strength of the electric heating belt 12, which can also achieve the purpose of rapid sealing without glue.

[0042] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. Electric heating cable end sealer, characterized by: It includes a first sealer body and a second sealer body. The first sealer body is made of high-temperature resistant plastic material. The first sealer body and the second sealer body are fixedly connected. Space for accommodating an electric heating tape is provided inside the first sealer body and the second sealer body. One end of the first sealer body is closed and the other end is open. Both ends of the second sealer body are open. The electric heating tape can be inserted into the first sealer body and the second sealer body from the opening at one end of the second sealer. An internal rubber ring is provided in the first sealer body. The internal rubber ring is provided with a through hole for the electric heating tape to pass through. The shape of the through hole is adapted to the cross-section of the electric heating tape. A protruding tooth is provided on the inner side of the first sealer body or the second sealer body. Corresponding to the position of the tooth, a spring piece is provided on the other side of the electric heating tape. The spring piece and the tooth hold the electric heating tape.

2. The electric heating tape end sealer according to claim 1, characterized in that: The spring sheet is provided with a clamping portion, which is clamped on the edge of the second sealer body, and the spring sheet is located in the second sealer body.

3. The electric heating tape end sealer according to claim 2, characterized in that: A U-shaped slot is provided in the space enclosed by the first sealer body and the second sealer body. The U-shaped slot is made of high temperature resistant plastic material. The electric heating tape passes through the U-shaped slot. The teeth are provided on the inner bottom surface of the U-shaped slot. The bottom width of the U-shaped slot is adapted to the width of the electric heating tape.

4. The electric heating tape end sealer according to any one of claims 1 to 3, characterized in that: A portion of the second sealer body is inserted into the first sealer body from the open end of the first sealer body. Corresponding to the position of the latch tooth, the first sealer body is provided with a first through hole, the second sealer body is provided with a second through hole, a fastening nut is provided at the second through hole, and the fastening screw passes through the first through hole and is fixedly connected to the fastening nut.

5. The electric heating tape end sealer according to claim 4, characterized in that: The fastening screw is a butterfly screw, which comprises a screw body and a hand screw head connected together, and a groove is arranged at the connection between the hand screw head and the screw body.

6. The electric heating tape end sealer according to claim 1, characterized in that: A plurality of annular rubber ring lips are arranged at the contact point between the internal rubber ring and the electric heating belt, and the rubber ring lips are inclined toward the end of the electric heating belt.

7. The electric heating tape end sealer according to claim 1, characterized in that: Arc-shaped teeth are provided at the contact point between the spring piece and the electric heating belt.

8. The electric heating tape end sealer according to claim 1, characterized in that: The outer top surface of the first sealer body is provided with a concave groove for clamping and installing the cable tie.

9. The electric heating tape end sealer according to claim 1, characterized in that: The bottom of the first sealer body is provided with wings protruding from the bottom surface.

10. The electric heating tape end sealer according to claim 1, characterized in that: The first sealer body is filled with silicone gel.

Images