Three-layer insulated wire resistant to mechanical shock

Abstract

The utility model relates to the technical field of cable production, in particular to a mechanical shock resistant three-layer insulated wire, which sequentially comprises a mechanical shock resistant shell, a first insulating layer, a second insulating layer and a shielding layer from outside to inside, a plurality of groups of twisted cable cores are arranged in the shielding layer, and a third insulating layer is sleeved on the surface of each group of cable cores. According to the utility model, through the arrangement of the anti-mechanical-impact shell, external mechanical impact can be effectively resisted, and the internal structure is protected; the insulating filler areas in the first insulating layer, the second insulating layer and the third insulating layer can provide good insulating performance and ensure the electrical safety of the cable, and the toughness braid layers arranged in the insulating filler areas enhance the toughness and tensile property of the insulating layers, so that the cable is not easy to damage when subjected to external force; the shielding layer can effectively shield external electromagnetic interference and guarantee the stability of signal transmission; and the surface of the cable core is sleeved with the third insulating layer, so that insulation protection of the cable core is enhanced, and normal use and safety of the cable are ensured.

Description

Technical Field

[0001] This utility model relates to the field of cable manufacturing technology, specifically to a triple-insulated wire resistant to mechanical impact. Background Technology

[0002] In today's era of widespread use of electrical equipment, triple-insulated wires, as crucial electrical connection and transmission components, directly impact the stability and safety of electrical systems. With increasingly complex industrial environments and ever-rising demands for electrical equipment reliability, the outer shell of existing triple-insulated wires is prone to damage under high-intensity mechanical impacts, exposing the internal structure and affecting the cable's normal operation. For example, on some industrial automated production lines, cables may be subjected to collisions or compression from equipment components, and traditional shells cannot provide sufficient protection. Insufficiently tight and robust connections between layers can easily lead to relative displacement between layers under external forces, affecting the overall performance and lifespan of the cable. Utility Model Content

[0003] The purpose of this invention is to provide a triple-insulated wire that is resistant to mechanical shock, so as to solve the problems of insufficient mechanical properties and poor stability of existing triple-insulated wires mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] The mechanical shock resistant triple-insulated wire, from the outside to the inside, includes a mechanical shock resistant outer shell, a first insulation layer, a second insulation layer and a shielding layer. The shielding layer contains several sets of twisted cable cores, and each set of cable cores is covered with a third insulation layer.

[0006] The first insulating layer, the second insulating layer, and the third insulating layer each include an insulating filler region and a tough braided layer disposed within the insulating filler region.

[0007] Preferably, the outer wall of the first insulating layer is provided with a number of uniformly and equidistantly arranged fixed protrusions, and the inner wall of the mechanical impact resistant shell is provided with grooves that are adapted to the size of the fixed protrusions and are inserted into each other.

[0008] Preferably, the mechanically impact resistant housing is made of PUR polyurethane with a thickness of 1-3 mm.

[0009] Preferably, the fixing protrusion is a rubber protrusion with a height of 0.5-0.8 mm.

[0010] Preferably, the tough braided layer is made of polyester fiber and glass fiber interwoven layer with a thickness of 0.5-1mm.

[0011] Preferably, the shielding layer is filled with a flame retardant filling layer.

[0012] Preferably, the flame retardant filling layer is a mineral filler layer or a silica flame retardant filling layer.

[0013] Compared with existing technologies, the beneficial effects of this utility model are:

[0014] This triple-insulated wire, resistant to mechanical shock, features an outer shell that effectively resists external mechanical impacts, protecting the internal structure. The insulating filler areas within the first, second, and third insulation layers provide excellent insulation performance, ensuring the cable's electrical safety. The braided layer within the insulating filler area enhances the insulation's toughness and tensile strength, making the cable less susceptible to damage under external forces. The shielding layer effectively blocks external electromagnetic interference, ensuring stable signal transmission. The third insulation layer covering the cable core further enhances the core's insulation protection, ensuring normal use and safety of the cable.

[0015] In this three-layer insulated wire resistant to mechanical shock, several sets of evenly spaced fixed protrusions are installed on the outer wall of the first insulation layer, and grooves that are adapted to the size of the fixed protrusions and fit into the inner wall of the mechanical shock resistant shell are provided, making the connection between the first insulation layer and the mechanical shock resistant shell more stable and less prone to relative displacement, thus enhancing the stability of the overall structure.

[0016] In this triple-insulated wire resistant to mechanical shock, the shielding layer is filled with a flame retardant filling layer. The flame retardant filling layer is made of mineral filler or silica flame retardant, which enables the cable to quickly stop the spread of fire in extreme situations such as fire, protect the surrounding environment and personnel safety, and improve the fire resistance of the cable. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are explained in detail together with the embodiments of the present invention, but do not constitute a limitation thereof.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the insulating layer of this utility model;

[0021] 10. Shock-resistant outer shell;

[0022] 20. First insulating layer; 21. Fixing protrusion;

[0023] 30. Second insulation layer; 31. Tough braided layer; 32. Insulating filler area;

[0024] 40. Shielding layer;

[0025] 50. Third insulation layer; 51. Flame retardant filler layer;

[0026] 60. Cable core. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "center", "vertical", "horizontal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and to simplify the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Triple-insulated wire resistant to mechanical shock, such as Figures 1-3 As shown, from the outside to the inside, the cable includes a mechanical shock resistant outer shell 10, a first insulation layer 20, a second insulation layer 30, and a shielding layer 40. The shielding layer 40 contains several sets of twisted cable cores 60, and each set of cable cores 60 is covered with a third insulation layer 50. The first insulation layer 20, the second insulation layer 30, and the third insulation layer 50 all include an insulating filler area 32 and a flexible braided layer 31 disposed within the insulating filler area 32. The mechanical shock resistant outer shell 10 effectively resists external mechanical shocks, protecting the internal structure. The insulating filler area 32 in the first insulation layer 20, the second insulation layer 30, and the third insulation layer 50 provides good insulation performance, ensuring the electrical safety of the cable. The flexible braided layer 31 disposed within the insulating filler area 32 enhances the toughness and tensile strength of the insulation layer, making the cable less susceptible to damage under external force. The shielding layer 40 effectively shields external electromagnetic interference, ensuring the stability of signal transmission. The third insulation layer 50 covering the surface of the cable cores 60 further enhances the insulation protection of the cable cores, ensuring the normal use and safety of the cable.

[0030] Furthermore, a number of uniformly spaced fixed protrusions 21 are installed on the outer wall of the first insulating layer 20, and grooves that are adapted to the size of the fixed protrusions 21 and are inserted into the inner wall of the anti-mechanical impact shell 10 are provided, so that the connection between the first insulating layer 20 and the anti-mechanical impact shell 10 is more stable and less prone to relative displacement, thereby enhancing the stability of the overall structure.

[0031] Specifically, the mechanical shock resistant outer shell 10 is made of PUR polyurethane with a thickness of 1-3mm, which gives the insulated wire good mechanical shock resistance and wear resistance, and can effectively protect the internal structure.

[0032] It is worth noting that the fixing protrusion 21 is made of rubber and the protrusion height is 0.5-0.8mm, which gives the fixing protrusion 21 a certain degree of elasticity and flexibility, allowing it to better fit with the groove during installation, and also to buffer external impact to a certain extent.

[0033] Among them, the tough braided layer 31 is made of polyester fiber and glass fiber interwoven layer with a thickness of 0.5-1mm, which makes the insulation layer both tough and strong, improves the tensile and bending resistance of the insulation layer, and extends the service life of the cable.

[0034] In addition, the shielding layer 40 is filled with a flame retardant filling layer 51. The flame retardant filling layer 51 is a mineral filler layer or a silica flame retardant filling layer, which enables the cable to quickly stop the spread of fire in extreme situations such as fire, protect the surrounding environment and personnel safety, and improve the fire resistance of the cable.

[0035] The working principle of this mechanically shock resistant triple-insulated wire:

[0036] First, before installation, check whether the mechanical shock resistant shell 10 is intact and ensure that its 1-3mm thick PUR polyurethane shell can effectively resist external mechanical impact. Then, align the fixing protrusion 21 on the first insulation layer 20 with the groove on the inner wall of the mechanical shock resistant shell 10. Since the fixing protrusion 21 is made of rubber and has a height of 0.5-0.8mm, it has a certain elasticity and can be smoothly inserted into the groove, so that the two are tightly connected and the overall structural stability is enhanced.

[0037] Subsequently, during use, the insulating filler area 32 in the first insulating layer 20, the second insulating layer 30, and the third insulating layer 50 plays an insulating role to ensure electrical safety, while the tough braided layer 31 enhances the toughness and tensile strength of the insulating layer to prevent the cable from being damaged by external forces; the shielding layer 40 can effectively shield external electromagnetic interference to ensure stable signal transmission, and its internal flame retardant filling layer 51 can prevent the spread of fire when encountering an accidental fire source, thus improving safety;

[0038] Finally, the cable core 60 transmits current or signals under the protection of the third insulation layer 50, completing the entire usage process. Through the synergistic effect of its various structures, this triple-insulated wire can work stably in a variety of complex environments, providing reliable connection and transmission protection for electrical equipment.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A triple-insulated wire resistant to mechanical shock, characterized in that: From the outside to the inside, it includes a mechanical shock resistant shell (10), a first insulation layer (20), a second insulation layer (30) and a shielding layer (40). The shielding layer (40) contains several sets of twisted cable cores (60), and each set of cable cores (60) is covered with a third insulation layer (50). The first insulating layer (20), the second insulating layer (30) and the third insulating layer (50) each include an insulating filler region (32) and a tough braided layer (31) disposed in the insulating filler region (32).

2. The triple-insulated wire resistant to mechanical shock according to claim 1, characterized in that: The outer wall of the first insulating layer (20) is provided with a number of uniformly and equidistantly arranged fixed protrusions (21), and the inner wall of the anti-mechanical impact shell (10) is provided with grooves that are adapted to the size of the fixed protrusions (21) and are inserted into each other.

3. The triple-insulated wire resistant to mechanical shock according to claim 2, characterized in that: The mechanical impact resistant shell (10) is made of PUR polyurethane with a thickness of 1-3 mm.

4. The triple-insulated wire resistant to mechanical shock according to claim 2, characterized in that: The fixing protrusion (21) is made of rubber and the protrusion height is 0.5-0.8mm.

5. The triple-insulated wire resistant to mechanical shock according to claim 1, characterized in that: The tough braided layer (31) is made of polyester fiber and glass fiber interwoven layer with a thickness of 0.5-1mm.

6. The triple-insulated wire resistant to mechanical shock according to claim 1, characterized in that: The shielding layer (40) is filled with a flame retardant filling layer (51).

7. The triple-insulated wire resistant to mechanical shock according to claim 6, characterized in that: The flame retardant filling layer (51) is a mineral filler layer or a silica flame retardant filling layer.

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