Cable fixing structure of heat knife shell

Abstract

The utility model provides a cable fixing structure of a heat knife shell, and belongs to the technical field of heat knife unlocking components. The heat knife comprises a heat knife shell, the tail portion of the heat knife shell is provided with a pressing and fixing structure used for fixing a cable penetrating into the heat knife shell from the tail portion of the heat knife shell, the pressing and fixing structure comprises an annular pressing piece with the annular section, and an insulating layer is further arranged between the annular pressing piece and the cable. The annular pressing piece surrounds the outer side of the connecting position of the cable and the tail of the heat knife shell, the annular pressing piece is filled with the insulating layer, the insulating layer is matched with the annular pressing piece, and therefore the cable can be pressed and fixed, and the cable cannot loosen at the connecting position of the cable and the tail of the heat knife shell when the heat knife shell works and moves. Therefore, the purpose of preventing the cable from falling off can be achieved, and the insulating layer can electrically isolate the cable.

Description

Technical Field

[0001] The utility model belongs to the technical field of hot knife unlocking components and relates to a hot knife housing cable fixing structure. Background Art

[0002] When the hot knife shell is in use, a cable is inserted into the tail end, but in actual use, the cable is prone to loosening and falling off.

[0003] For example, a Chinese patent discloses a hot knife bolt device that can be unlocked and released [application number: 201310228693.5], which mainly consists of a bolt external structure, an internal mounting frame, a wiring harness, a hot knife module, and fasteners. Utility Model Content

[0004] The purpose of the present invention is to provide a cable fixing structure for a hot knife housing in order to solve the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A hot knife housing cable fixing structure includes a hot knife housing, wherein the tail of the hot knife housing is provided with a compression fixing structure for fixing a cable inserted from the tail of the hot knife housing into the hot knife housing, the compression fixing structure includes an annular compression plate with an annular cross-section, and an insulating layer is also provided between the annular compression plate and the cable.

[0007] In the above-mentioned hot knife housing cable fixing structure, the annular pressing piece is formed by combining two symmetrically arranged arc-shaped pressing pieces, and the two arc-shaped pressing pieces are fixed by bolts.

[0008] In the above-mentioned hot knife housing cable fixing structure, the end of any one of the two arc-shaped pressing plates is fixedly connected to an annular end plate, and the tail of the hot knife housing is recessed inwardly to provide an annular groove body, and the annular end plate is inserted into the annular groove body.

[0009] In the above-mentioned hot knife housing cable fixing structure, both ends of the arc-shaped pressing piece have connecting parts with rectangular cross-sections, and the connecting parts are provided with internal threaded holes for screwing in bolts.

[0010] In the above-mentioned hot knife housing cable fixing structure, the annular end plate and the arc-shaped pressing piece are formed in one piece.

[0011] In the above-mentioned hot knife housing cable fixing structure, the annular end plate and the tail of the hot knife housing are fixed by spot welding.

[0012] In the above-mentioned hot knife housing cable fixing structure, there are at least five welding points between the annular end plate and the hot knife housing.

[0013] In the above-mentioned hot knife housing cable fixing structure, the insulating layer includes a cable shielding layer with a ring-shaped cross section. The cable shielding layer has a folded portion on the side close to the tail of the hot knife housing, and a heat shrink sleeve with a ring-shaped cross section is also provided between the folded portions.

[0014] In the above-mentioned hot knife shell cable fixing structure, a heat shrink film is also wrapped between the heat shrink sleeve and the cable shielding layer. When the heat shrink film is wrapped between the heat shrink sleeve and the cable shielding layer, the outer side of the folded part is abutted against the arc-shaped pressing piece and a pre-tightening force is formed between the folded part and the arc-shaped pressing piece.

[0015] In the above-mentioned hot knife housing cable fixing structure, an insulating rubber layer is also provided inside the annular pressing piece.

[0016] Compared with the existing technology, the advantages of this utility model are:

[0017] 1. The annular compression piece surrounds the outside of the connection between the cable and the tail of the hot knife housing. The insulation layer is filled in the annular compression piece. The annular compression piece can be used to tighten and fix the cable, so that the cable will not become loose at the connection position with the tail of the hot knife housing when the hot knife housing moves during operation, thereby preventing the cable from falling off. The insulation layer can also electrically isolate the cable.

[0018] 2. The annular pressing piece is composed of two symmetrically arranged arc-shaped pressing pieces, which can be easily assembled after the installation of the cables in the hot knife housing is completed, and can also facilitate the setting of the insulation layer.

[0019] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0021] Figure 2 It is a partial cross-sectional schematic diagram of the utility model;

[0022] Figure 3 It is a structural schematic diagram of an arc-shaped pressing plate with an annular end plate.

[0023] In the figure, there are a hot knife housing 1, a cable 2, a compression fixing structure 3, an annular compression piece 4, an insulating layer 5, an arc-shaped compression piece 6, an annular end plate 7, an annular groove body 8, a connecting portion 9, an internal threaded hole 10, a cable shielding layer 11, a folding portion 12, a heat shrink tubing 13, a heat shrink film 14, and an insulating adhesive layer 15. DETAILED DESCRIPTION

[0024] like Figure 1-Figure 3As shown, a hot knife housing cable fixing structure includes a hot knife housing 1, and a compression fixing structure 3 is provided at the tail end of the hot knife housing 1 for fixing the cable 2 inserted from the tail end of the hot knife housing 1 into the hot knife housing 1. The compression fixing structure 3 includes an annular compression plate 4 with an annular cross-section, and an insulating layer 5 is also provided between the annular compression plate 4 and the cable 2.

[0025] In the present invention, the annular compression piece is wrapped around the outside of the connection between the cable and the tail of the hot knife housing 1, and the insulating layer is filled in the annular compression piece. The annular compression piece can be used to press and fix the cable 2, so that the cable will not become loose at the connection position with the tail of the hot knife housing 1 when the hot knife housing moves during operation, thereby preventing the cable from falling off. The insulating layer 5 can also electrically isolate the cable.

[0026] Specifically, the annular compression piece 4 is formed by combining two symmetrically arranged arc-shaped compression pieces 6, and the two arc-shaped compression pieces 6 are fixed by bolts. The annular compression piece is composed of two symmetrically arranged arc-shaped compression pieces 6, which can facilitate assembly after the cable is installed in the hot knife housing and can also facilitate the installation of the insulation layer 5.

[0027] Specifically, the end of any of the two arc-shaped pressing pieces 6 is fixedly connected to an annular end plate 7, and the tail of the hot knife housing 1 is recessed inwardly to provide an annular groove 8, and the annular end plate 7 is inserted into the annular groove 8. The annular end plate 7 can facilitate the positioning of the arc-shaped pressing piece 6.

[0028] Specifically, the arc-shaped compression piece 6 has a connecting portion 9 with a rectangular cross section at both ends, and the connecting portion 9 is provided with an internal threaded hole 10 for screwing in a bolt. The internal threaded hole on the connecting portion can be used with a bolt to assemble the two arc-shaped compression pieces into an annular compression piece.

[0029] Specifically, the annular end plate 7 and the arc-shaped pressing piece 6 are formed in one piece.

[0030] Specifically, the annular end plate 7 and the tail of the hot knife housing 1 are fixed by spot welding.

[0031] Preferably, there are at least five welding points between the annular end plate 7 and the hot knife housing 1 .

[0032] Specifically, the insulating layer 5 includes a cable shielding layer 11 having an annular cross-section. The cable shielding layer 11 has a folded portion 12 near the rear end of the hot knife housing 1. A heat shrink tubing 13 having an annular cross-section is disposed between the folded portion 12. The cable shielding layer 11 separates the cable from the annular compression plate to prevent electrical leakage. The folded portion enhances insulation. The heat shrink tubing 13 prevents thermal expansion and contraction, which could cause the annular compression plate and the insulating layer to lose their compression effect on the cable.

[0033] Preferably, a heat shrink film 14 is wound between the heat shrink tubing 13 and the cable shielding layer 11. When the heat shrink film 14 is wound between the heat shrink tubing 13 and the cable shielding layer 11, the outer side of the folded portion 12 abuts against the arcuate compression piece 6, and a pre-tightening force is formed between the folded portion 12 and the arcuate compression piece 6. Wrapping the heat shrink film around the cable increases the thickness of the insulation layer, thereby enabling the folded portion 12 and the arcuate compression piece 6 to form a pre-tightening force, thereby compressing and securing the cable.

[0034] Preferably, an insulating adhesive layer 15 is further provided in the annular pressing piece 4. After the insulating layer and the annular pressing piece are installed, insulating adhesive is poured into the gap in the annular pressing piece to further fix the cable.

[0035] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0036] Although this article uses the punching block 10, punching frame 11, punching rod 12, synchronous plate 13, detachable structure 14, stamping structure 15, clamping block 16, bolt 17, rotating motor 18, guide block 19, vertical slide bar 20, eccentric block 21, rotating rod 22, partition 23, upper cavity 24, lower cavity 25, buffer spring 26, sliding hole 27, slide groove 28, disc 29, anti-collision strip 30, abutment frame 31, limit ring 32, abutment ring 33, frame 100, quilting device 101, quilting needle 102, etc. more frequently, these terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A hot knife housing cable fixing structure, comprising a hot knife housing (1), characterized in that: The tail of the hot knife housing (1) is provided with a compression fixing structure (3) for fixing the cable (2) inserted from the tail of the hot knife housing (1) into the hot knife housing (1), and the compression fixing structure (3) includes an annular compression piece (4) with an annular cross section, and an insulating layer (5) is also provided between the annular compression piece (4) and the cable (2).

2. The hot knife housing cable fixing structure according to claim 1, characterized in that: The annular pressing piece (4) is formed by combining two symmetrically arranged arc-shaped pressing pieces (6), and the two arc-shaped pressing pieces (6) are fixed by bolts.

3. The hot knife housing cable fixing structure according to claim 2, characterized in that: An annular end plate (7) is fixedly connected to the end of any one of the two arc-shaped pressing plates (6); the tail of the hot knife housing (1) is inwardly recessed and provided with an annular groove body (8); and the annular end plate (7) is inserted into the annular groove body (8).

4. The hot knife housing cable fixing structure according to claim 2, characterized in that: The arc-shaped pressing piece (6) has connecting parts (9) with rectangular cross-sections at both ends, and the connecting parts (9) are provided with internal threaded holes (10) for screwing in bolts.

5. The hot knife housing cable fixing structure according to claim 3, characterized in that: The annular end plate (7) and the arc-shaped pressing piece (6) are integrally formed.

6. The hot knife housing cable fixing structure according to claim 3, characterized in that: The annular end plate (7) and the tail of the hot knife housing (1) are fixed by spot welding.

7. The hot knife housing cable fixing structure according to claim 6, characterized in that: There are at least five welding points between the annular end plate (7) and the hot knife housing (1).

8. The hot knife housing cable fixing structure according to any one of claims 1 to 7, characterized in that: The insulating layer (5) includes a cable shielding layer (11) with an annular cross section. The cable shielding layer (11) has a folded portion (12) on one side close to the tail of the hot knife housing (1). A heat shrink tubing (13) with an annular cross section is provided between the folded portions (12).

9. The hot knife housing cable fixing structure according to claim 8, characterized in that: A heat shrink film (14) is also wound between the heat shrink tube (13) and the cable shielding layer (11). When the heat shrink film (14) is wound between the heat shrink tube (13) and the cable shielding layer (11), the outer side of the folded portion (12) abuts against the arc-shaped pressing piece (6) and a pre-tightening force is formed between the folded portion (12) and the arc-shaped pressing piece (6).

10. The hot knife housing cable fixing structure according to claim 9, characterized in that: An insulating rubber layer (15) is also provided inside the annular pressing piece (4).

Images