A spiral heating wire for a vehicle seat

Abstract

The utility model provides a kind of spiral heating line of seat for vehicle, adopt the conductor material of nickel-chromium alloy material, while center filling material selects high tensile strength, high temperature resistant and other characteristics basalt fiber rope, insulation layer material selects the XLPVC or XLPE of high temperature resistance and high insulation resistance. Compared with the service life of traditional heating line is improved from 60,000 times to 120,000 times, the overall bending life is improved by 50%, and the seat surface temperature difference can be realized ≤1.5 ℃, solve the problem of traditional seat uneven heat.

Description

Technical Field

[0001] This utility model belongs to the field of heating wire technology, specifically relating to a spiral heating wire for car seats. Background Technology

[0002] With the rapid development of the automotive industry and the increasing demand for driving comfort from consumers, heated car seats have gradually expanded from standard features in mid-to-high-end models to some lower-end models, providing more diverse choices for consumers in the low-end new energy vehicle market. According to data from market research firm Statista, the global market size for heated car seats reached $5.8 billion in 2023 and is projected to exceed $9 billion by 2030, with a compound annual growth rate of 6.3%. Against this backdrop, performance optimization of the core component of heated seats—the spiral heating wire—has become a key point of technological competition.

[0003] Traditional car seat heating wires typically consist of a central fiber, metal wires, and a plastic sheath. The metal wires are spirally wrapped around the outside of the central fiber to form a metal wire layer, and the sheath is wrapped around the outside of the metal wire layer. After repeated bending, stretching, or compression, significant gaps appear between the sheath and the metal wires. The sheath fails to provide adequate protection for the metal wires, making them prone to breakage. This results in heating failure, uneven heating, and localized overheating, causing passenger discomfort and even safety hazards. Furthermore, some seat heating wires have inadequate resistance designs, leading to wasted energy and high energy consumption, posing a significant challenge to the energy consumption of new energy vehicles. Additionally, some materials contain heavy metals or non-biodegradable components, creating considerable environmental pressure. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a spiral heating wire for car seats with good temperature control uniformity and long service life.

[0005] This utility model is implemented as follows:

[0006] A spiral heating wire for a car seat comprises, from the inside out: a reinforcing filling layer, a padding layer, a metal wire, an adhesive layer, and an insulating layer;

[0007] The reinforcing filler layer is made of basalt fiber rope;

[0008] The padding layer is made of nylon or fluoroplastic;

[0009] The metal wire is made of nickel-chromium alloy and is spirally wound on the pad layer with a spiral diameter of 23 mm and a pitch of 4 mm.

[0010] The insulating layer is XLPVC or XLPE.

[0011] Furthermore, the adhesive layer is made of EVA resin.

[0012] The advantages of this utility model are:

[0013] 1. Heating uniformity

[0014] Traditional car seat heating cables have poor temperature control uniformity and uneven heat distribution, which can easily lead to poor temperature control during use, causing the temperature to rise and resulting in a poor passenger experience. The cable of this invention can achieve a seat surface temperature difference of ≤1.5℃.

[0015] 2. Improved cable durability

[0016] This invention utilizes a nickel-chromium alloy conductor material, improving resistance stability by 20%. Simultaneously, the central filling material is made of basalt fiber rope with high tensile strength and high temperature resistance, while the insulation layer material is XLPVC or XLPE with high temperature resistance and high insulation resistance. Compared to traditional heating wires, the service life is increased from 60,000 cycles to 120,000 cycles, and the overall bending life is improved by 50%. This significantly enhances the performance of the heating wire; combined with intelligent manufacturing processes, it achieves high consistency and low energy consumption production; and integrated intelligent temperature control technology lays the foundation for future vehicle networking applications. Attached Figure Description

[0017] The present invention will now be further described with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the spiral heating wire of this utility model.

[0019] Reference numerals: 1. Reinforcing filler layer; 2. Pad layer; 3. Metal wire; 4. Adhesive layer; 5. Insulating layer. Detailed Implementation

[0020] The details of this utility model can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of this utility model described herein are for illustrative purposes only and should not be construed as limiting the utility model in any way. Under the teachings of this utility model, those skilled in the art can conceive of any possible modifications based on this utility model, and these should all be considered to fall within the scope of this utility model.

[0021] Reference Figure 1As shown, this embodiment provides a spiral heating wire for a car seat. The spiral heating wire includes, from the inside out: a reinforcing filling layer 1, a padding layer 2, a metal wire 3, an adhesive layer 4, and an insulating layer 5. The reinforcing filling layer 1 is made of basalt fiber rope; the padding layer 2 is made of nylon or fluoroplastic; the metal wire 3 is made of nickel-chromium alloy and is spirally wound on the padding layer 2 with a spiral diameter of 23 mm and a pitch of 4 mm; the adhesive layer 4 is made of EVA resin; and the insulating layer 5 is made of XLPVC or XLPE.

[0022] Bending tests revealed that the spiral heating wire of this invention has a bending life of 120,000 cycles, which is 50% higher than the 60,000 cycles of the traditional heating wire design.

[0023] The spiral heating wire for automotive seats provided by this invention achieves a surface temperature difference of ≤1.5℃, solving the problem of uneven heating in traditional automotive seat heating wires, which often results in poor temperature control and overheating, leading to a poor passenger experience. Furthermore, the use of a nickel-chromium alloy conductor material improves resistance stability by 20%. The central filling material is made of basalt fiber rope with high tensile strength and high temperature resistance, while the insulation layer uses high-temperature resistant and high-insulation-resistance XLPVC or XLPE. Compared to traditional heating wires, the lifespan is increased from 60,000 cycles to 120,000 cycles, and the overall bending lifespan is improved by 50%. This significantly enhances the performance of the heating wire. Combined with intelligent manufacturing processes, it achieves high consistency and low-energy production. The integrated intelligent temperature control technology lays the foundation for future vehicle networking applications.

[0024] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A spiral heating wire for a car seat, characterized in that: From the inside out, it includes: a reinforcing filler layer, a padding layer, metal wires, an adhesive layer, and an insulating layer; The reinforcing filler layer is made of basalt fiber rope; The padding layer is made of nylon or fluoroplastic; The metal wire is made of nickel-chromium alloy and is spirally wound on the pad layer with a spiral diameter of 23 mm and a pitch of 4 mm. The insulating layer is XLPVC or XLPE.

2. The spiral heating wire for a car seat according to claim 1, characterized in that: The adhesive layer is made of EVA resin.

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