JPH0252608A - Seat heater for vehicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a vehicle seat heater that heats the seats of a vehicle or the like.

Prior Art FIG. 4 is a perspective view showing a vehicle seat 10 equipped with a heater unit 15, 16, in which 11 is a seat part, 12 is a back part, and an outer skin 13, 14 and a main pad 17, 1, respectively. A heater unit 15.16 is installed.

FIG. 5 is a perspective view showing an example of the configuration of a conventional heater unit 15, in which 2o is a heating element, and 21 is a flexible support such as a heavy body. 20 are arranged and held.

22 is a lead wire portion for connecting to a vehicle power source or the like (not shown).

In FIG. 5, the heating element 20 is folded back at the center in the width direction of the heater unit 15 and arranged in a straight line, and in particular, the heating element 20m arranged at the front end position of the heater unit 15 forms the longest straight part. are doing.

FIG. 6 is a plan view showing another conventional arrangement method for the heating element 20, in which the heating element 20 is folded back at approximately the center in the width direction of the heater unit 15, as in the arrangement example shown in FIG. An example is shown in which the heater unit 15 is directly arranged in a straight line in the width direction of the heater unit 15 without doing so.

FIG. 7 shows how the heater unit 15 is connected to the seat 11 of the seat 10.
FIG. 8 shows an enlarged sectional view of the locking part A in FIG. 7.

In FIG. 8, both left and right ends of the heater unit 15 have a thickness of 1011 points with the skin 13 of the seat portion 11! A layer of urethane 23 having a thickness of about 100 mm and a hanging cloth 27 are sewn together, and a hanging wire 24 for locking is inserted through the hanging cloth 27.
4 is locked with a clip 26 to a locking metal fitting 25 embedded in a hanging groove 29 of the main pad 17.

Problems to be Solved by the Invention However, such a conventional method of arranging a heating element in a heater unit has the following problems.

(1) When the heating element 20 is arranged so that the straight part is long in the width direction of the heater unit 15, the tensile load in the width direction applied to the heater unit 15 when an occupant is seated, etc. There is a risk that the heating element 2Oa section, which has a long straight section, may be disconnected.

(2) In order to absorb the tensile load applied to the heating element 20 and prevent wire breakage, if the heating element 20 is folded back at the center in the width direction of the heater unit 15, the number of folded parts increases and work efficiency is significantly reduced. do.

(3) In order to improve workability, as shown in FIG. 6, if the folding at the central part of the heating element 20 is eliminated, a long straight part is formed in the entire width direction of the heater unit 15, and the wire breaks due to tensile load. The fear of this will further increase. In addition, care must be taken during work to ensure that the heating element 20 does not become sagging or, conversely, that an excessive tensile load is not applied to it.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention has a heating element arranged in a meandering manner in the width direction of the heater uni-soto at a substantially central position in a straight line portion in a substantially U-shape or a substantially V-shape. That is.

Operation With the above configuration, the substantially U-shaped or substantially V-shaped portion of the heating element absorbs the tensile load applied to the heater unit.

Example Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of the heater unit 1. FIG.

In FIG. 1, reference numeral 3 denotes a flexible support such as a heavy body, and a heating element 2 is disposed between the layers, and the heating element 2 is folded back in a straight line in the width direction of the upper heater knit 1. An example is shown in which a substantially U-shaped portion 4 is provided at substantially the center of each linear portion of the heating element 2. 7 indicates a lead wire portion connected to a vehicle power source (not shown).

FIG. 2 is a plan view showing only the arrangement of the heating element 2 shown in FIG. 1, and shows an example in which a substantially V-shaped portion 5 is provided.

FIG. 3 shows the substantially V-shaped portion 5 in FIG. 2 and the reverse substantially V-shaped portion 6.
A plan view of an example is shown.

1 and 2, the substantially U-shaped portion 4 and the substantially V-shaped portion 5 of the heating element 2 are located approximately in the center between the linear portions of the heating element 2 disposed in the width direction of the heater unit 1. However, a plurality of approximately U-shaped portions or approximately V-shaped portions may be provided at any position between the straight portions of the heating element 2 disposed in the width direction of the heater unit 1. .

Next, the operation of the above configuration will be explained.

Since the substantially U-shaped portion 4 or the substantially V-shaped portion 5.6 is provided on the linear portion of the heating element 2 arranged linearly in the width direction of the heater unit 1, Even if a tensile load is applied, the substantially U-shaped portion 4 or the substantially V-shaped portion 5.
Since the wire 6 absorbs the load, disconnection of the heating element 2 can be prevented.

Effects of the Invention As described above, according to the present invention, the following effects can be obtained.

(1) By configuring the approximate center position of each linear part of the heating element linearly arranged in the width direction of the heater unit into a substantially U-shape or a substantially V-shape, Even if a tensile load is applied, the load will be approximately U-shaped (
Since the heat is absorbed by the approximately V-shaped portion, disconnection of the heating element can be prevented.

(2) A folded part at the center of the heater unit is not required, and as a result, the number of folded wiring parts of the heating element is reduced, and workability is greatly improved.

(3) When arranging the heating element in the manufacturing process of the heater unit, there is a roughly U-shaped part or a roughly V-shaped part in the middle of the straight part, which can absorb sagging and tensile loads and prevent problems caused by work variations. It can be resolved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a heater unit according to an embodiment of the present invention, FIGS. 2 and 3 are plane views showing the arrangement of the heating element of the heater unit of the present invention, and FIG. 4 is a perspective view of a heater unit installed in the heater unit of the present invention. FIG. 5 is a perspective view of a conventional heater unit; FIG. 6 is a plan view showing the arrangement of a conventional heater unit and heating element; and FIG. 7 is a diagram of a vehicle equipped with a heater unit. A sectional view of the seat, FIG. 8, is an enlarged sectional view of the main part of FIG. 7. 1...Heater unit, 2...Heating element,
3... Support body, 4... Approximately U-shaped part, 5
．． 6...Approximately V-shaped part, 10... Seat, 1
1.12... Epidermis, 17.18... Main pad. Name of agent: Patent attorney Shigetaka Awano and 1 other person 1st
Figure/Figure/-1-Heag unit 2-11 blow-up book 3-Support 4--Ichiginshi/$1 Daishi? Doshichi V Ki” 1 and 4 Figure 7 Figure 8 Figure 5

Claims (1)

[Claims] A heater unit installed between the seat skin and the main pad is composed of a support body and a heating element disposed on the support body, and the heating element has a meandering shape having a straight portion in the width direction of the heater unit. A seat heater for a vehicle, which is arranged in a shape such that the straight portion of the heating element has a substantially central position in a substantially U-shape or a substantially V-shape.