Combined self-temperature-limiting electric heating belt

Abstract

The utility model discloses a combined self-temperature-limiting ribbon heater, which comprises two buses arranged in parallel, an insulating layer is coated outside a semiconductor heating core tape, a metal wire woven belt-shaped shielding layer is spirally wound outside the insulating layer, and an insulating outer sheath is coated outside the metal wire woven belt-shaped shielding layer; the top, the bottom and the two sides of the inner wall of the insulating layer are all provided with inner shearing grooves in the length direction, and the top, the bottom and the two sides of the inner wall of the insulating outer sheath are all provided with outer shearing grooves in the length direction. According to the utility model, the inner shearing groove and the outer shearing groove are arranged on the insulating layer and the insulating outer sheath, so that blades of scissors can be conveniently inserted, the metal wire woven belt-shaped shielding layer is reserved, the winding of the insulating adhesive tape is not limited by space, the operation is simpler, the winding, sealing and fixing are more facilitated, and the insulating layer and the insulating outer sheath are reserved; the insulating and wear-resisting effects are not influenced, and the use is safer.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric heating band, concretely is a combined self-limiting temperature electric heating band. BACKGROUND

[0002] The combined self-limiting temperature electric heating band can be used in combination by splicing according to actual requirements of different positions in use occasions, facilitates circuit on-off control and temperature control, is more practical in use and brings great convenience for heating.

[0003] The existing self-limiting temperature electric heating band is connected tightly between layers, is inconvenient to peel off layer by layer, and only the semiconductor heating core band, the insulating layer, the shielding layer and the insulating outer sheath of the splicing ends of the two adjacent self-limiting temperature electric heating bands can be peeled off and removed when splicing and combining.

[0004] The shielding layer is missing, and the power-on magnetic field at the splicing position has an impact on nearby instruments and equipment;

[0005] The insulating effect and wear resistance of the insulating tape are not as good as the original insulating layer and insulating outer sheath;

[0006] The length of the insulating layer, the shielding layer and the insulating outer sheath peeled off and removed is short, and it is inconvenient to wind the insulating tape between the two bus bars after the bus bar is connected, and the operation is inconvenient. INVENTION CONTENTS

[0007] In view of the deficiencies of the prior art, the utility model provides a combined self-limiting temperature electric heating band to solve the problems of missing shielding effect at the connection, reduced insulation and wear resistance and inconvenient operation of the combined self-limiting temperature electric heating band in the prior art.

[0008] To solve the above technical problems, the utility model provides the following technical scheme:

[0009] A combined self-limiting temperature electric heating band, comprising two parallel bus bars, a semiconductor heating core band arranged on the surface of the two bus bars and between the two bus bars, an insulating layer covering the outside of the semiconductor heating core band, a metal wire woven belt-shaped shielding layer spirally wound on the outside of the insulating layer, and an insulating outer sheath covering the outside of the metal wire woven belt-shaped shielding layer.

[0010] The top, bottom and two sides of the inner wall of the insulation layer are provided with inner shear grooves along the length direction, and the top, bottom and two sides of the inner wall of the insulation outer sheath are provided with outer shear grooves along the length direction.

[0011] Preferably, the inner shear grooves and the outer shear grooves are correspondingly arranged, and the inner shear grooves and the outer shear grooves are V-shaped grooves or U-shaped grooves.

[0012] Preferably, the width of the inner shear grooves on the two sides of the inner wall of the insulation layer is not more than the width of the inner shear grooves on the top and bottom of the inner wall of the insulation layer.

[0013] Preferably, the width and depth of the inner shear grooves on the two sides of the inner wall of the insulation layer are not more than one third of the wall thickness of the insulation layer at the corresponding positions.

[0014] Preferably, the width and depth of the outer shear grooves on the top, bottom and two sides of the inner wall of the insulation outer sheath are equal, and the width and depth of the outer shear grooves are not more than one third of the wall thickness of the insulation outer sheath.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model discloses a inner shear groove and outer shear groove are set up on the insulation layer and insulation outer sheath, and the blade of the scissors is inserted conveniently, and the metal wire woven band-shaped shielding layer is cut along the outer shear groove under the premise that the metal wire woven band-shaped shielding layer is not damaged, so that the spiral winding metal wire woven band-shaped shielding layer is convenient to disassemble and restore after splicing, and the insulation tape is wound on one group of busbars, and the other group of busbars is connected without winding insulation tape again, which not only retains the metal wire woven band-shaped shielding layer, but also winds the insulation tape without space limitation, and the operation is simpler and more conducive to winding, sealing and fixing, and the insulation layer and insulation outer sheath are retained, so that the insulation and wear resistance are not influenced, and the use is safer, and the problems of missing shielding effect, decreased insulation and wear resistance and inconvenient operation in the prior art are solved. ACCURACY

[0017] Fig. 1 It is a whole structure schematic view of the utility model;

[0018] Fig. 2 It is a cross section view of the utility model;

[0019] Fig. 3 It is a splicing effect view of two combined self-limiting temperature electric heating bands of the utility model.

[0020] In the figure: 1, busbar; 2, semiconductor heating core belt; 3, insulation layer; 31, inner shear groove; 4, metal wire woven belt-shaped shielding layer; 5, insulation outer sheath; 51, outer shear groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] As Figs. 1-3 shown, the utility model provides a kind of technical scheme: a combined self-limiting temperature electric heating band, including two parallelly arranged busbars 1, the surface of two busbars 1 and the position between them are provided with semiconductor heating core belt 2, the outside of semiconductor heating core belt 2 is covered with insulation layer 3, metal wire woven belt-shaped shielding layer 4 is spirally wound outside insulation layer 3, and the outside of metal wire woven belt-shaped shielding layer 4 is covered with insulation outer sheath 5;

[0023] The top of the inner wall of insulation layer 3, the bottom of the inner wall and the two sides of the inner wall are all provided with inner shear groove 31 along the length direction, the top of the inner wall of insulation outer sheath 5, the bottom of the inner wall and the two sides of the inner wall are all provided with outer shear groove 51 along the length direction, the positions of inner shear groove 31 and outer shear groove 51 correspond, and inner shear groove 31 and outer shear groove 51 are V-shaped groove or U-shaped groove;

[0024] The width of inner shear groove 31 of the two sides of the inner wall of insulation layer 3 does not exceed the width of inner shear groove 31 of the top of the inner wall and the bottom of the inner wall of insulation layer 3, and the width and depth of inner shear groove 31 of the two sides of the inner wall of insulation layer 3 both do not exceed one third of the wall thickness of insulation layer 3 at the corresponding position, and the width and depth of inner shear groove 31 of the two sides of the inner wall of insulation layer 3 both do not exceed one third of the wall thickness of insulation layer 3 at the corresponding position.

[0025] The width and depth of outer shear groove 51 of the top of the inner wall, the bottom of the inner wall and the two sides of the inner wall of insulation outer sheath 5 are all equal, and the width and depth of outer shear groove 51 both do not exceed one third of the wall thickness of insulation outer sheath 5.

[0026] Working principle:

[0027] By setting the inner shearing groove 31 and the outer shearing groove 51 on the insulating layer 3 and the insulating outer sheath 5, the blades of the scissors are conveniently inserted, the scissors cut the insulating outer sheath 5 along the outer shearing groove 51 without damaging the metal wire woven belt-shaped shielding layer 4, two adjacent self-limiting temperature electric heating tapes respectively cut two diagonally cut insulating outer sheaths 5, the spiral-wound metal wire woven belt-shaped shielding layer 4 is removed, the insulating layer 3 is cut along the inner shearing groove 31, two adjacent self-limiting temperature electric heating tapes respectively cut two diagonally cut insulating layers 3, the excess semiconductor heating core band 2 at the splicing position can be conveniently removed, after connecting one group of bus bars 1, the insulating tape is wound, after connecting the other group of bus bars 1, the insulating tape does not need to be wound again, then the insulating layer 3 reserved at the diagonal position on each of the two self-limiting temperature electric heating tapes is restored, the metal wire woven belt-shaped shielding layer 4 is wound and restored, fixed by the insulating tape, the insulating outer sheath 5 reserved at the diagonal position on each of the two self-limiting temperature electric heating tapes is restored, and the insulating tape is wound and fixed on the outside, the splicing is completed, the metal wire woven belt-shaped shielding layer 4 is not only reserved, but also the insulating tape is not limited by space, the operation is simpler, and it is more conducive to winding, sealing and fixing, the insulating layer 3 and the insulating outer sheath 5 are reserved, the insulation and wear resistance are not affected, and the use is safer.

[0028] It should be noted that in this document, such as the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment.

[0029] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A combined self-regulating heating tape, comprising two parallel busbars (1), characterized in that: Semiconductor heating core strips (2) are provided on the surface of the two busbars (1) and at the position between them. The semiconductor heating core strips (2) are covered with an insulating layer (3). A metal wire braided strip shielding layer (4) is spirally wound around the insulating layer (3). An insulating outer sheath (5) is covered on the outside of the metal wire braided strip shielding layer (4). The top, bottom, and both sides of the inner wall of the insulating layer (3) are provided with inner shear grooves (31) along the length direction, and the top, bottom, and both sides of the inner wall of the insulating outer sheath (5) are provided with outer shear grooves (51) along the length direction.

2. The combined self-regulating heating tape according to claim 1, characterized in that: The inner shear groove (31) and the outer shear groove (51) are positioned correspondingly, and the inner shear groove (31) and the outer shear groove (51) are V-shaped grooves or U-shaped grooves.

3. The combined self-regulating heating tape according to claim 1, characterized in that: The width of the inner shear grooves (31) on both sides of the inner wall of the insulating layer (3) shall not exceed the width of the inner shear grooves (31) at the top and bottom of the inner wall of the insulating layer (3).

4. The combined self-regulating heating tape according to claim 1, characterized in that: The width and depth of the inner shear grooves (31) on both sides of the inner wall of the insulating layer (3) do not exceed one-third of the wall thickness of the insulating layer (3) at the corresponding position.

5. A combined self-regulating heating tape according to claim 1, characterized in that: The width and depth of the outer shear grooves (51) at the top, bottom and sides of the inner wall of the insulating outer sheath (5) are equal, and the width and depth of the outer shear grooves (51) do not exceed one-third of the wall thickness of the insulating outer sheath (5).

Images