JPH03145089A - Heater unit - Google Patents

Abstract

PURPOSE:To enable a heater wire to be sewed in a support of a single cloth and not make stiff touch when a man is sit on a heater unit by raising in the reverse side of a heater wire supporting plane of a supporter in which the heater wire is sewed. CONSTITUTION:A heater wire 1 is sewed in a supporter 2 of a woven or a knit cloth by an upper thread 3 and a lower thread 4 and raising 6 is formed on the supporter 2 in the reverse side of the heater wire 1 sewed plane. Balance between the thickness of the thread and, in the case of a woven cloth for the supporter 2, the thread density or, in the case of a knit cloth for the supporter 2, knitting density respectively affects softness of the heat unit. Like this, a heater wire can be sewed even if the supporter 2 is a single cloth and a soft heater unit 5 which does not give stiff touch when a person sit on is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a heater unit of a vehicle seat heater used for heating the seats of a vehicle or the like.

Prior art FIG. 9 is a perspective view showing a vehicle seat 20 equipped with a heater unit 25, 26, in which 21 is a seat part, 22 is a back part, and there is a space between the outer fabric 23, 24 and the main pad 27, 28. Each is equipped with a heater unit 25,26.

FIG. 10 shows the configuration of the heater unit 25.
Reference numeral 30 denotes a flexible support such as a tangible body, and heater wires 31 are wired in a meandering manner between the layers that bond the two together. 29
is a lead wire connected to a vehicle battery (not shown).

FIG. 11 shows a heater wire 33 attached to a support 32 that can be sewn, such as cloth.
An example is shown in which the upper thread 34 and lower thread 35 are used. 12th
The figure shows an enlarged view of section A in FIG. 11, FIG. 13 shows an enlarged view of section B in FIG. 11, and FIGS. 14 and 15 show side views of section A in FIG. 11.

In FIGS. 11 to 15, the support 32 is generally a nonwoven fabric or a fabric (&! fabric, woven fabric, etc.) bonded with urethane foam.

FIG. 14 shows an example in which a nonwoven fabric or a cut cloth (knitted fabric, woven fabric, etc.) is used alone as the support 32.

In addition, in FIG. 15, two pieces of cloth 36 (4
An example is shown in which a urethane foam 37 is laminated between the fabric, woven fabric, etc.

Invention tries to solve! However, in such a conventional heater unit 25, there was the following io.

(1) In the method shown in FIG. 11, when the support body 32 is soft, the support body 32 is overcome by the elasticity of the heater*33, making suturing impossible.

Particularly at the corners as shown in FIG. 13, wrinkles were generated in the support 32 due to the elasticity of the heater wire 33.

Therefore, the support body 32 is required to have flexibility comparable to the elasticity of the heater wire 33, and the support body 32 is given hardness by applying resin processing or the like.

Therefore, when the heater unit 25 is attached to the seat 20 as shown in FIG. 9, there is a drawback that the seat 20 feels stiff and the seating comfort is impaired.

(2) Therefore, in order to compensate for such drawbacks, it was necessary to attach a urethane foam 37 to the support 32 to give it flexibility, as shown in FIG.

In this case, the urethane foam 37 alone lacks durability and is too slippery to be sewn, so the urethane foam 37 has been laminated with the harmful material 36.

This not only increases costs but also increases the thickness of the support 32, which limits the supply length in roll form and significantly impairs workability.

The present invention solves the above-mentioned problems and provides a flexible heater unit in which heater wires can be sewn even to a support made of cut cloth, and which does not give a stiff feeling when seated.

Means for Solving In In order to solve the above problems, the heater unit of the present invention has the following features:
The support is made of a harmful material (m-cloth or woven fabric), and the side opposite to the side to which the heater wire is sewn is brushed.

Effect With the above configuration, even if the support is only a harmful object, the heater wire can be sutured and flexibility can be ensured.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, 5 is a heater unit of the present invention, and a heater wire 1 is sewn to a support 2 made of (woven fabric or woven fabric) with an upper thread 3 and a lower thread 4 (shown in FIG. 2). There is.

FIG. 2 is an enlarged side view showing an example of the state of the heater wire 1 sewn to the support body 2.

FIG. 2 shows an example in which a raised surface 6 is applied to the support 2 on the opposite surface to the surface to which the heater wire 1 is sewn.

Here, the flexibility of the support 2 is greatly influenced by the thread density in the case of a woven fabric, and the balance between the wrapping density and the thickness of the thread used in the case of a woven fabric.

In experiments, in the case of woven fabric, by setting the thread thickness to 20 to 30 (metric type) and the thread density to 30 to 40 threads/inch, it was possible to sew heater wires and obtain flexibility after raising. done.

At this time, in order to ensure flexibility, there is no problem if the napping is approximately 2 to 5 times (after shirring).

Further, in the case of knitted fabric, if the thread thickness is approximately 100 denier and the density is approximately 500 g/rrr, there will be no problem in sewing the heater wire.

However, it is shown in the enlarged organization chart (schematic diagram of plain weave) in Fig. 7.

In the case of the woven fabric 9, since the weft threads 11 and the warp threads 10 intersect with each other, when the outer shape is cut after sewing the heater wires, fraying and thread slipping (slip phenomenon) tend to occur at the end surfaces.

Therefore, in such a case, as shown in the enlarged perspective views of FIG. 3 and FIG. can be prevented.

Alternatively, as shown in the enlarged perspective views of FIG. 5 and FIG.
The above peeling can be prevented by applying resin 8 to the position of 6m (ld).

In this case, the resin 8 may be in the form of a band or dots, and more effects can be obtained by applying a plurality of resins (FIGS. 5 and 6 show two examples).

Furthermore, an even greater effect can be obtained by applying a plurality of resins to the entire heater unit 5 at arbitrary intervals.

In the case of the woven fabric 12 as shown in FIG. 8, there is no risk of fraying or thread coming out (slip phenomenon) as described above, and there is no need for stitching or resin application.

Effects of the Invention As is clear from the description of the embodiments above, the heater unit of the present invention can obtain the following effects by applying fluff to the support.

(1) It is possible to manufacture a flexible heater unit that can be sewn without losing the elasticity of the heater wire and eliminates the stiff feeling when sitting.

(2) There is no need to use a separate material such as urethane foam to obtain flexibility, and the support can be constructed from a single piece of cloth (woven or knitted fabric), reducing costs and greatly improving workability.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a heater unit showing an embodiment of the present invention, FIG. 2 is an enlarged side view of the same heater unit, FIG. 3 is a perspective view showing the peripheral seam of the heater unit, and FIG. [Enlarged perspective view showing edge stitching, No. 5] of the same heater unit
The figure is a perspective view showing the application of resin to the periphery of the heater unit, FIG. 6 is an enlarged perspective view showing the application of resin to the periphery of the heater unit, FIG. 7 is an enlarged tissue diagram of the woven fabric, and FIG. 8 9 is a perspective view showing the structure of a vehicle seat equipped with a heater unit; FIG. 10 is a perspective view of a conventional seat heater mounted on the same vehicle seat; FIG. The figure is a back view of a seat heater showing another conventional example, Fig. 12,
Fig. 13 is an enlarged view of parts A and B in Fig. 11, Fig. 14 is an enlarged side view of part A in Fig. 11, and Fig. 15 is an enlarged side view showing another conventional example of part A in Fig. 11. It is. 1... Heater wire, 2... Support body, 5...
... Heater unit, 6... Brushed.

Claims (3)

[Claims] (1) A heater unit comprising a heater wire and a support body for suturing and holding the heater wire, the surface of the support body opposite to the heater wire holding surface being brushed. (2) The heater unit according to claim 1, wherein the outer end face of the support body is sewn along the end face at a position of 2 to 10 mm. (3) The heater unit according to claim (1), wherein a plurality of adhesives are applied in strips or dots along the outer end surface of the support.