JPH0521752U - Heating sheet - Google Patents

Abstract

(57) [Summary] [Purpose] Without damaging the cushioning of the seat,
We also provide heating sheets with excellent safety. In a seat having a seat pad 11 and a seat cover 10 covering the seat pad 11 as a main constituent member, a conductive linear heating element 12 is attached to the back surface of the seat cover 10 for heating. Sheet.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heating seat in which a heating element is embedded in a seat cushion or a seat back.

[0002]

[Prior Art]

 Conventionally, as a heating seat such as a vehicle seat cushion or a seat back, for example, as shown in the longitudinal sectional view of the seat cushion in FIG. 3 (Japanese Patent Laid-Open No. 61-92621), a seat that covers the seat pad 26. A type in which a heater unit 23 is inserted in the cover 20 is known. FIG. 4 is an enlarged view of a circle indicated by the alternate long and short dash line in FIG. 3, and FIG. 5 is a partially enlarged view showing the state of the seat cover 20 of FIG. 3 during manufacturing. The flat heater unit 23 attached to the support member 25 is formed between the cover skin 21 of the seat cover 20 and the cover pad 22.

[0003]

[Problems to be solved by the device]

 However, in the case of the above type, since the heater unit 23 is press-fitted between the cover skin 21 and the cover pad 22, the support member 25 to which the conductive linear heating element 24 of the heater unit 23 is attached is press-fitted into the heater unit 23. It was necessary to make it hard enough for work, which could impair the cushioning of the seat. Further, since the heater unit 23 is composed of a member different from the seat cushion or the seat back, and the heater unit 23 is not adhered, the heater unit 23 moves or bends inside the seat cover 20, and the heater unit 23 is always in a fixed position. In some cases, the unit 23 cannot be installed, and in such a case, the heating element 24 of the heater unit 23 may be damaged such as disconnection. The step of mounting and the step of press-fitting the heater unit 23 are required, which complicates the manufacturing process. Further, the seat cover 20 has a defect that the design of the seat cover 20 is insufficient because the design of the seat cover 20 is determined in accordance with the shape of the heater unit 23 and the shape in which the heater unit 23 can be easily inserted.

[0004]

[Means for Solving the Problems]

 The present invention has been made in view of the above problems, and in a seat having a seat pad and a seat cover that covers the seat pad as main constituent members, a conductive linear heating element is attached to the back surface of the seat cover to heat the seat. It is configured as a sheet.

[0005]

[Operation and effect of the device]

 In the heating sheet of the present invention, the conductive linear heating element is directly attached to the back surface of the seat cover, so that the heating element moves inside the seat cover like the conventional one in which the heater unit is formed by another member. There is no possibility of breaking or damage to the heating element without bending, and safety is enhanced. Also, the step of press-fitting the heater unit and the step of forming the heater unit can be omitted. Furthermore, since it is not necessary to use a supporting member for mounting the heating element, the material is saved, and the cushioning property does not deteriorate due to the insertion of the supporting member.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partially exploded perspective view of a vehicle heating seat including a seat cover 10 and a seat pad 11 as main constituent members. On the back surface of the seat cover 10, a nichrome wire 12 is attached in a wave shape as a linear heating element. FIG. 2 shows an enlarged perspective view of the back surface of the seat cover 10 for explaining the attachment of the nichrome wire 12 in more detail. In the figure, the seat cover 10 has a three-layer structure in which a cover skin 13, a urethane cover pad 14, and a backing base cloth 15 are welded or adhered, and the nichrome wire 12 is sewn to the seat cover 10 with a thread 16. Has been. At this time, the seam may be sewn so that the seam does not appear on the surface of the cover skin 13 of the seat cover, or the normal sewing machine may be sewn in consideration of utilizing the seam in design.

When the nichrome wire 12 is sewn directly to the back surface of the seat cover 10 in this manner, the nichrome wire 12 does not move or bend inside the seat, and there is no possibility of the nichrome wire 12 breaking or damaging. Therefore, safety is increased. Further, unlike the conventional one in which the heater unit is formed as a separate member, it is not necessary to use a supporting member for attaching the nichrome wire, so that the cushioning property of the seat does not deteriorate. Further, the step of press-fitting the heater unit and the step of forming the heater unit can be omitted, so that the manufacturing process can be simplified. In addition, since it is not necessary to use a supporting member, the material can be saved. Also, the design of the seat cover can be freely created without being caught by the shape of the heater unit.

In the above embodiment, the nichrome wire 12 is attached to the seat cover 10 by sewing, but it may be attached by using a heat resistant adhesive. Further, the heating sheet is not limited to the vehicle seat, and may be a heating sheet by attaching a linear heating element to a seat cover of furniture such as a sofa or a chair.

[Brief description of drawings]

FIG. 1 is a partially exploded perspective view of a vehicle heating seat according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of the back surface of the seat cover.

FIG. 3 is a vertical cross-sectional view of a conventional heating seat cushion.

FIG. 4 is a partially enlarged view of FIG.

FIG. 5 is a partially enlarged view showing a state at the time of manufacturing the seat cover in FIG.

[Explanation of symbols]

10 ... Seat cover, 11 ... Seat pad, 12 ... Nichrome wire, 13 ... Cover skin, 14 ... Cover pad, 15
... backing cloth, 16 ... thread, 20 ... seat cover, 21 ... cover skin, 22 ... cover pad, 23 ... heater unit,
24 ... Heating element, 25 ... Support member.

Claims (1)

[Scope of utility model registration request] 1. A seat having a seat pad and a seat cover covering the seat pad as main components,
A heating sheet having a conductive linear heating element attached to the back surface of the seat cover.