JP2013095348A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat which has a planar heater unit arranged on the backside of a seat cover and which restrains the seat cover from being displaced with respect to the heater unit.SOLUTION: The vehicle seat includes the seat cover 3 and the planer heater unit 2 which is arranged on the backside of the seat cover 3. A backing layer 30 for fixing at least some fibers constituting the seat cover 3 is formed on the backside of the seat cover 3. A plurality of protrusions 31 protruding to the side of the heater unit 2 are formed on the backing layer 30.

Description

  The present invention relates to a vehicle seat including a planar heater device using a three-dimensional knitted fabric as a base material.

  Patent Document 1 below describes a planar heater device in which a heating wire is fixed to a breathable base material by sewing. Such a planar heater device is suitably used for a vehicle seat or the like. In the vehicle seat, a planar heater device is arranged on the back side of the seat cover in order to warm a portion that comes into contact with the occupant's seat such as a back portion or a buttocks portion.

JP 2003-297532 A

  However, when such a planar heater device is used for a vehicle seat, the seat cover moves relative to the heater device (base material) due to the operation of the occupant (hereinafter referred to as this state). This is simply referred to as “position shift”), and wrinkles occur in the seat cover. If the seat cover and the heater device are bonded, the problem is solved, but the adhesive layer becomes a heat insulating material, and the function as the heater-equipped sheet is lowered.

  In view of the above situation, the problem to be solved by the present invention is that the seat cover is displaced with respect to the heater device in the vehicle seat in which the planar heater device is arranged on the back side of the seat cover. It is to suppress.

In order to solve the above problems, a vehicle seat according to the present invention includes a seat cover,
A vehicle seat provided with a planar heater device disposed on the back side of the seat cover, wherein a backing layer that fixes at least some of the fibers constituting the seat cover to the back surface of the seat cover The gist of the present invention is that the backing layer is formed with a plurality of protrusions protruding toward the heater device.

  According to the above configuration, since the frictional force generated between the seat cover and the heater device is increased by the protrusion formed on the backing layer, the seat cover is not easily displaced with respect to the heater device. In other words, the backing layer formed on the seat cover is skillfully used as a misalignment prevention element. Thereby, it is possible to prevent wrinkles from occurring in the seat cover due to the operation of the occupant.

  In addition, the heater device has a surface layer in which a plurality of holes are formed and a three-dimensional knitted fabric having a three-dimensional layer provided on the back side of the surface layer, to which a heating wire that generates heat when energized is attached, It is only necessary that at least a part of the plurality of protrusions formed on the backing layer enter at least a part of the plurality of holes formed on the surface layer.

  As described above, if at least a part of the plurality of protrusions formed in the backing layer enters at least a part of the plurality of holes formed in the three-dimensional knitted material that is the base material, the seat cover is provided for the heater device. Becomes more difficult to shift. That is, since a hole may be formed in the surface layer of the three-dimensional knitted fabric in order to improve air permeability, in this case, the effect of preventing misalignment can be further enhanced by using the hole.

  Further, in this case, the protrusion formed on the backing layer has a tapered shape whose tip is smaller than the hole formed in the surface layer and whose root is the same as or larger than the hole formed in the surface layer. What is necessary is just to be formed.

  In this case, the protrusions formed on the backing layer are likely to enter the holes formed on the surface layer of the three-dimensional knitted fabric. Moreover, when it enters the hole to the base of the protrusion, the protrusion is pressed into the hole. That is, more protrusions enter the holes formed in the surface layer, and the inserted protrusions are pressed into the holes, so that the effect of preventing the seat cover from being displaced relative to the heater device can be further enhanced.

  According to the vehicle seat of the present invention, the frictional force generated between the seat cover and the heater device is increased by the protrusions formed on the backing layer, so that the seat cover is not easily displaced with respect to the heater device.

Fig.1 (a) is an external appearance perspective view of the vehicle seat concerning embodiment of this invention, FIG.1 (b) is the figure which showed typically the AA cross section of Fig.1 (a). It is the figure which showed typically the cross section of the seat cover and heater apparatus in the vehicle seat concerning 1st embodiment. It is an external appearance perspective view of the solid knitted fabric used for the vehicle seat heater device according to the second embodiment. It is the figure which showed typically the cross section of the seat cover and heater apparatus in the vehicle seat concerning 2nd embodiment. It is a schematic diagram for demonstrating the shape (an example of suitable shape) of the processus | protrusion formed in a backing layer.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the vertical direction (thickness direction) simply refers to the vertical direction (the thickness direction of the base material 20) in FIGS.

  The vehicle seat 1 according to the first embodiment includes a seat cover 3 (skin) and a heater device 2. The heater device 2 is provided between a seat cover 3 and a seat pad 4 that is a cushion material. Since a well-known structure can be applied to the structure of the seat pad 4 and a seat frame (not shown) which is a skeleton of the seat, a detailed description is omitted. Moreover, the location in which the heater apparatus 2 demonstrated in detail below is installed is not specifically limited. The present invention can be applied to any place such as a seat back portion (seat back) and a seating portion (seat cushion).

  The heater device 2 includes a base material 20 (base) made of a fabric and a heating wire 24 attached to the base material 20. The heating wire 24 is made of a metal material that generates heat when energized, such as a nichrome wire. The heating wire 24 is sewn to the base material 20 in a predetermined shape at a predetermined position. This position and shape are not particularly limited. The heater device 2 is a planar heater that generates heat when the heating wire 24 is energized by a power supply unit (not shown) provided in the vehicle.

  The seat cover 3 is a cloth material that covers at least the surface of the sheet. A backing layer 30 is formed on the back surface of the seat cover 3. The backing layer 30 fixes (hardens the fibers) at least a part of the fibers constituting the main body portion 32 of the seat cover 3 so that the fibers constituting the seat cover 3 are not frayed. Examples of the material of the backing layer 30 include acrylic resin. The backing layer 30 has a plurality of protrusions 31 protruding toward the heater device 2 side. The method of forming the protrusion 31 is not limited to a specific method, but a method using a roller, a method using a mask, and the like are conceivable.

  As a method using a roller, a material constituting the backing layer 30 is applied to the back surface of the main body portion 32 of the seat cover 3, and then the applied material is pressed and consolidated with a roller having a plurality of recesses. Can be illustrated. In this way, the concave portion formed in the roller is formed as the protrusion 31. As a method using a mask, the material constituting the backing layer 30 is applied to the back surface of the main body portion 32 of the seat cover 3 and flattened with a roller or the like, and then the portion where the protrusions 31 are not formed is covered with a mask (masking is performed). ), And a method of applying the material again in a state covered with the mask. In this way, the portion not covered with the mask is formed as the protrusion 31 by the second application of the material. Various methods other than this may be considered as a masking method (procedure).

  Since the heater device 2 is disposed on the back side of the seat cover 3, the heater device 2 is in contact with the plurality of protrusions 31 formed on the backing layer 30. Therefore, the frictional force generated between the heater device 2 and the backing layer 30 is increased by the protrusions 31 formed on the backing layer 30. As a result, the seat 1 for the vehicle is less likely to be displaced with respect to the heater device 2.

  Next, the vehicle seat 1a according to the second embodiment will be described focusing on differences from the vehicle seat 1 according to the first embodiment.

  In the present embodiment, a three-dimensional knitted fabric 20a is used as the base material 20 of the heater device 2a. The three-dimensional knitted fabric 20a has a surface layer 21a, a three-dimensional layer 23a, and a back layer 22a. The surface layer 21a and the back layer 22a are thin cloth materials. Among these, at least the surface layer 21a is formed with a plurality of holes 21 (hereinafter also referred to as air holes 211a) for ensuring good air permeability. That is, at least the surface layer 21a is made of a mesh material. The plurality of air holes 211a are preferably formed at equal intervals. On the other hand, the back layer 22a may have any configuration. For example, you may comprise with the same mesh material as the surface layer 21a.

  The three-dimensional layer 23a is a connection layer that connects the surface layer 21a and the back layer 22a. That is, it is a layer composed of a connecting thread 231a extending in a substantially vertical direction connecting the surface layer 21a and the back layer 22a. The structure of the three-dimensional layer 23a (the connecting yarn 231a) is a known structure such as a cross structure (the connecting yarns 231a cross each other) or a truss structure (a shape in which “V” is continuous by the connecting yarns 231a). Is applicable. The three-dimensional knitted fabric 20a is a three-dimensional knitted fabric having a predetermined thickness due to the presence of the three-dimensional layer 23a. The material of the connecting thread 231a constituting the three-dimensional layer 23a is not limited to a specific material, but is preferably formed of an elastic material from the viewpoint of improving the cushioning property of the seat.

  On the other hand, each protrusion 31 formed on the backing layer 30 of the seat cover 3 is shaped so as to be able to enter the vent hole 211a.

  If such a three-dimensional knitted fabric 20a is used as the heater device 2a as the base material 20, at least a part of the plurality of protrusions 31 formed on the backing layer 30 of the seat cover 3 is a three-dimensional body positioned on the back side of the seat cover 3. It enters at least part of the plurality of vent holes 211a formed in the surface layer 21a of the knitted fabric 20a. If the protrusion 31 enters the air hole 211a in this way, the effect of preventing the positional deviation of the seat cover 3 with respect to the heater device 2a is further enhanced. That is, in the vehicle seat 1a according to the present embodiment, the plurality of holes formed in the surface layer 21a of the three-dimensional knitted fabric 20a are used as an element for preventing the position shift of the seat cover 3 in order to ensure good air permeability. Skillfully used.

  In the present embodiment, as shown in FIG. 5, the protrusion 31 formed on the backing layer 30 has a tip portion 311 smaller than the vent hole 211a formed on the surface layer 21a and a root portion 312 formed on the surface layer 21a. It is desirable to be formed in a tapered shape that is the same as or larger than the vent hole 211a. If the tip portion 311 of the projection 31 is smaller than the vent hole 211a, the projection 31 is likely to enter the vent hole 211a, so that more projections 31 enter the vent hole 211a. Further, if the root portion 312 of the protrusion 31 is the same as or larger than the vent hole 211 a, the protrusion 31 enters the vent portion 211 a so as to expand the vent hole 211 a. That is, the projection 31 is pressed into the vent hole 211a.

  Thus, if the protrusions 31 are set in the shape shown in FIG. 5, more protrusions 31 enter the air holes 211a, and these protrusions 31 are pressed into the air holes 211a. The effect of preventing the displacement of the seat cover 3 with respect to the heater device 2a can be further enhanced.

  In the above configuration, the surface layer 21a of the three-dimensional knitted fabric 20a may be formed of a stretchable material. With such a configuration, the protrusion 31 that is press-fitted so as to expand the vent hole 211a is tightened by the contraction force of the surface layer 21a, so that the effect of preventing the displacement of the seat cover 3 is further improved.

  As mentioned above, although embodiment of this invention was described in detail, this invention is not limited to the said embodiment at all, A various change is possible in the range which does not deviate from the summary of this invention.

DESCRIPTION OF SYMBOLS 1,1a Vehicle seat 2,2a Heater apparatus 20 Base material 20a Three-dimensional knitted fabric 21a Surface layer 211a Hole (ventilation hole)
23a Three-dimensional layer 24 Heating wire 3 Seat cover 30 Backing layer 31 Projection 311 Projection tip 312 Projection root

Claims (3)

A seat cover,
A sheet heater device disposed on the back side of the seat cover, and a vehicle seat,
On the back surface of the seat cover, a backing layer for fixing at least some of the fibers constituting the seat cover is formed,
A vehicular seat characterized in that a plurality of protrusions protruding toward the heater device are formed on the backing layer. The heater device is one in which a heating wire that generates heat when energized is attached to a three-dimensional knitted fabric having a surface layer in which a plurality of holes are formed and a three-dimensional layer provided on the back side of the surface layer,
2. The vehicle seat according to claim 1, wherein at least a part of the plurality of protrusions formed on the backing layer enters at least a part of the plurality of holes formed on the surface layer.   The protrusion formed on the backing layer is formed in a tapered shape having a tip portion smaller than a hole formed in the surface layer and a root portion equal to or larger than the hole formed in the surface layer. The vehicle seat according to claim 2, wherein the vehicle seat is provided.

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