JP2012076547A - Vehicular seat heater and vehicular seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular seat heater and vehicular seat, capable of accommodating load characteristics depending upon respective sections and of bearing an extension load to be significantly changed when an occupant is seated.SOLUTION: The vehicular seat heater H includes a base material 20 and a heater wire 30. The base material 20 includes a seating surface side mounting section 21 fixed on a seating surface portion 11a and a back surface side mounting section 22 fixed on a back surface portion 11c. The heater wire 30 includes a seating surface side heater wire 31 and a back surface side heater wire 32. The seating surface side heater wire 31 includes a plurality of first extensions 31a which are substantially bilaterally symmetric and wavy, spaced from each other by a predetermined interval and are arranged substantially parallel to each other and a side section 31b for connecting ends of the first extensions 31a with each other. The back surface side heater wire 32 includes a plurality of second extensions 32a which are substantially bilaterally symmetric and wavy, spaced from each other by a predetermined interval. A distance between portions which the plurality of first extensions 31a are closest to each other is set to be smaller than that between portions which the plurality of second extensions 32a are closest to each other.

Description

  The present invention relates to a vehicle seat heater and a vehicle seat, and more particularly to a highly elastic vehicle seat heater and a vehicle seat provided with the vehicle seat heater.

  In winter, especially when the temperature is low, there is a problem that when the seated person comes into contact with the seat, the seat temperature is low and the comfort is impaired. On the other hand, a technique is known in which a seat heater serving as a heating device is disposed on the seat.

  As described above, the vehicle seat heater is provided for the purpose of keeping warm and for preventing freezing. The seat heater is a planar heating element capable of warming the seat by a heating wire embedded in the seat surface portion of the seat, and can improve the comfort at the time of sitting.

  Examples of the need for such a seat heater include a sofa, a massage chair, a seat disposed in a vehicle such as an automobile, a motorcycle, and a snowmobile. Among them, vehicles (seat-type) on which people ride, such as motorcycles and snowmobiles, are different from seats used in other cases, and the seated person is affected by the surrounding environment such as temperature and wind. Therefore, seat heaters are particularly important in cold regions.

  Generally, since the load of the seated passenger is applied to the vehicle seat, the cushion material and the skin material are elastically stretched and deformed by the load. Along with the deformation of the cushion material and the skin material, a force that extends in the vehicle longitudinal direction and the vehicle lateral direction also acts on the vehicle seat heater.

Therefore, the vehicle seat heater provided in the vehicle seat is required to have a configuration that expands when a load is applied when the occupant is seated.
For example, Patent Document 1 discloses a vehicle seat heater in which a heater wire (heating wire) is bonded and fixed to a thin cloth-like base fabric material having elasticity, and a vehicle seat provided with the vehicle seat heater. Is disclosed.

  In the vehicle seat heater described in Patent Document 1, the heater wires meander in the longitudinal direction of the vehicle body so as to be substantially symmetrical on both sides of the central portion extending in the longitudinal direction of the vehicle body at the approximate center of the base material. Wired to

  In the vehicle seat heater described in Patent Document 1, when an occupant is seated and an extension force in the vehicle body longitudinal direction is applied to the base fabric material, the heater wire is arranged in a meandering manner in the vehicle body longitudinal direction. Following the stretching deformation of the cloth material, the heater wire can also be stretched in the longitudinal direction of the vehicle body. As a result, when a force that extends in the longitudinal direction of the vehicle body is applied to the vehicle seat, it is possible to satisfactorily deform the entire vehicle seat heater following the deformation of the cushion material and the skin material. .

  Further, as a conventional technique, a vehicle seat heater 100 of Patent Document 2 shown in FIG. 10 includes a heater wire 130 that is bent in a longitudinal direction and a lateral direction on a base fabric material (base material) and arranged in a meandering manner. I have. Since the heater wire 130 of the vehicle seat heater 100 disclosed in Patent Document 2 is bent in the front-rear direction and the left-right direction of the vehicle body at the seat surface portion on which the occupant sits, the disconnection due to the load when the occupant is seated is effective. Can be prevented.

JP 2005-279070 A International Patent Publication WO2007 / 097445

  In the vehicle seat heater disclosed in Patent Document 1, when an extension force in the lateral direction of the vehicle body acts on the base fabric material, a plurality of heater wires are wired substantially linearly along the lateral direction of the vehicle body. For this reason, the heater wire cannot be deformed in the left-right direction of the vehicle body, and only the portion of the base fabric material where the heater wire is not fixed is extended in the left-right direction of the vehicle body. Therefore, the vehicle seat heater described in Patent Document 1 has a disadvantage that it is difficult to follow the lateral deformation of the skin material or the cushion material in the vehicle body lateral direction when the occupant is seated.

  As illustrated in FIG. 10 as a prior art, the vehicle seat heater 100 described in Patent Document 2 is provided with a meandering heater wire 130 in the vehicle longitudinal direction and the vehicle lateral direction. Since the heater wire 130 of the vehicle seat heater 100 of Patent Document 2 includes one or two bent portions in the left-right direction, the heater wire 130 also has elasticity in the left-right direction.

  However, in the vehicle seat heater 100 disclosed in Patent Document 2, the heater wires 130 have substantially the same density and are wired in the same direction on the seat surface portion and the back surface portion where the occupant abuts. There is an inconvenience that it is difficult to cope with different load characteristics.

  In addition, the vehicle seat disclosed in Patent Document 2 is a seat that is generally loaded on a four-wheeled vehicle, and does not correspond to a load characteristic unique to a two-wheeled vehicle. In other words, in motorcycles, the occupant's vertical movement is performed more frequently than the four-wheeled vehicle due to the unevenness of the traveling road, and accordingly, the seating load of the occupant frequently and greatly changes in the seat surface portion and the back surface portion. It is necessary to cope with load characteristics different from those of automobiles.

  Furthermore, not only the heater wire 130 disposed on the seat surface portion and the back surface portion, but also the heater wire 130 that connects the controller (thermostat) 152 that controls the temperature of the vehicle seat heater 100 and the seat surface portion or the back surface portion. The load varies greatly depending on the configuration of the vehicle seat to which the vehicle seat heater 100 is attached.

  Accordingly, there has been a demand for a vehicle seat heater and a vehicle seat having strength in a two-wheeled vehicle seat in which load characteristics vary greatly from part to part and the extension load by an occupant changes greatly when the vehicle travels.

  The present invention has been made to solve the above inconveniences, and an object of the present invention is to be able to cope with load characteristics depending on each part in a straddle-type vehicle and to change greatly when an occupant is seated. An object of the present invention is to provide a vehicle seat heater and a vehicle seat capable of withstanding an extension load. Another object of the present invention is to provide a vehicle seat heater and a vehicle seat that are easily extended by an extension load that changes greatly when the occupant is seated and that have a good seating feeling for the occupant.

  According to the vehicle seat heater of claim 1, the object includes a planar base material having stretchability and a heater wire fixed over substantially the entire area of the base material. A seat heater for a vehicle disposed between a straddle-type cushion material having a portion and a skin material covering the cushion material, wherein the base material is arranged on the seat surface side fixed on the seat surface portion And a rear surface side placement portion fixed on the back surface portion, and the heater wire is fixed to the seat surface side heater wire fixed to the seat surface side placement portion and the back surface side placement portion. The seat surface side heater wire has a substantially symmetrical wave shape, extends from the approximate center of the seat surface side arrangement portion in the left-right direction of the vehicle body, and is substantially parallel with a predetermined distance from each other. A plurality of first extending portions disposed on the side portions, and side portions that connect ends of the first extending portions, The surface-side heater wire includes a plurality of second extending portions that extend in a substantially symmetrical wave shape above the vehicle body and are spaced apart from each other by a predetermined distance, and the plurality of first extending portions are mutually connected. The distance between the closest parts is solved by arranging the plurality of second extending portions to be smaller than the distance between the closest parts.

In the said structure, the heater wire arrange | positioned at a seat surface part is wired so that a wave shape, ie, a peak part and a trough part may continue. For this reason, when a force that extends in the lateral direction of the vehicle body and in the longitudinal direction of the vehicle body is applied to the base material, the heater wire is also expanded following the expansion deformation of the base material. It can be satisfactorily deformed in the lateral direction of the vehicle body and in the longitudinal direction of the vehicle body. As described above, the vehicle seat heater can be satisfactorily deformed in any of the left-right direction and the front-rear direction of the vehicle body. On the other hand, even when loads in the lateral direction of the vehicle body and in the longitudinal direction of the vehicle body are applied, the vehicle seat heater can be favorably stretched and deformed following the stretching deformation of the skin material and the cushion material.
In general, in a vehicular seat in which an occupant frequently moves in the vertical direction due to road surface unevenness or the like, an extension load in the vertical direction is particularly likely to act on the back surface portion thereof. On the other hand, in the vehicle seat heater of the present invention, the heater wire disposed on the back surface portion is wired in a wave shape in the vertical direction of the vehicle body. Therefore, with the above configuration, the back portion can be favorably deformed particularly in the vertical direction, so that the durability against an extension load in the vertical direction is high.
In the vehicle seat heater of the present invention, the density of the heater wires arranged on the seat surface portion and the back surface portion, that is, the intervals between the heater wires are different from each other. Since a larger vertical load acts on the seat surface portion with which the occupant's buttocks and legs are in contact, it is necessary to increase the strength against the extension load by narrowing the space between the heater wires. On the other hand, since the back portion comes into contact with the occupant from the back of the waist, it is difficult to apply a large load compared to the seat surface portion. Therefore, in order to make the seating surface portion more easily stretchable with respect to a longitudinal load, wiring is performed so that the interval between the heater wires is widened.
In this way, by arranging the extending direction and the interval of the heater wires arranged on the seat surface portion and the back surface portion to be different from each other, it is possible to cope with load characteristics depending on each part in particular. As a result, since the seating feeling of the vehicle seat can be improved, it is possible to give a good ride comfort to the occupant and to surely improve the extension strength of the vehicle seat heater.

At this time, as in claim 2, the cushion material has a suspending groove for suspending the base material between the seat surface portion and the back surface portion, and the base material is on the seat surface side. A connection surface portion provided between the placement portion and the back side placement portion and attached to the hanging groove in a bent state; and the heater wire includes the seating surface side heater wire and the back side heater wire. A plurality of connection portion heater wires that are electrically connected to each other and fixed to the connection surface portion, and the distance between the portions of the plurality of connection portion heater wires that are closest to each other is determined by the plurality of first extension portions. It is preferable that they are arranged so as to be larger than the distance between the parts closest to each other.
Thus, the vehicle seat heater is attached to the cushion material in a state where the connection surface portion of the base material is bent. That is, in the vehicle seat heater, a slack portion is formed by the bent connection surface portion, so that it is always avoided that the vehicle seat heater is fixed to the cushion material in a tensioned state. Can do. Therefore, for example, even when a sudden extension force acts on the vehicle seat heater during vehicle travel, the vehicle seat heater may be damaged or damaged by the connection surface portion (slack portion). Can be suppressed.
In addition, since the connecting part heater wire that connects the seat surface side heater wire and the back surface side heater line is provided on the connecting surface part that does not require heating the vehicle seat, the wiring amount of the connecting part heater wire is minimized. It becomes possible. Therefore, when the connecting surface portion of the base material is bent, the danger of the heater wire connecting portion being disconnected can be reduced.
And since the space | interval of the heater wire arrange | positioned in a connection surface part is wired larger than the heater wire space | interval of a seat surface part, the extensibility of the heater wire in a connection surface part is securable. Therefore, it can be set as the vehicle seat provided with a different expansion | extension characteristic in each part of a seat surface part, a connection surface part, and a back surface part. As a result, the extension strength of the entire vehicle seat heater can be remarkably improved.
Further, in order to warm both the seat surface portion and the back surface portion, a vehicle seat heater in which the seat surface side disposition portion and the back surface side disposition portion are integrated may be attached to the cushion material. Since the number of wiring connections accompanying the attachment can be reduced, the attaching operation can be simplified. In addition, as described above, since only one vehicle seat heater is sufficient to warm both the seat surface portion and the back surface portion, the number of parts can be reduced.

According to a third aspect of the present invention, the base material extends from the seat surface side arrangement portion to the rear of the vehicle body, and is attached with temperature control means for controlling the temperature of the heater wire and is inserted into the cushion material. The heater wire further includes a plurality of insertion portion heater wires that extend from the seat surface side heater wire and are fixed to the insertion portion. It is preferable to extend rearward.
Thus, since the heater wire is fixed in a wave shape along the extending direction in the insertion portion to which the temperature control means is attached, when the insertion portion is inserted into the cushion material, the vehicle seat heater is provided. Even when a load is applied to the heater wire due to the weight of the temperature control means and the movement of the occupant, the heater wire can be extended, so that the strength against the extension load is improved. Therefore, even in a portion other than the seat surface portion, the back surface portion, and the connection surface portion, that is, in the insertion portion where the temperature control means is installed, the strength at the extension load peculiar to the portion (insertion portion) is improved.

Further, according to a fourth aspect of the present invention, it is preferable that each of the second extending portions is disposed in an oblique direction so that the distance in the left-right direction of the vehicle body becomes narrower from the lower side of the vehicle body toward the upper side of the vehicle body. .
In this way, by arranging the heater wires in the oblique direction on the back surface, it is possible to ensure extensibility not only in the vertical direction load but also in the horizontal direction load. When a load in the vehicle body vertical direction and vehicle body left-right direction is input from the occupant's waist to the vehicle seat heater, the vehicle seat heater can be suitably deformed in any direction.

  As described in claim 5, since the vehicle seat according to the present invention includes the vehicle seat heater described above, it can cope with load characteristics depending on each part, and changes greatly when the occupant is seated. It can withstand extension loads.

  As described above, according to the vehicle seat heater and the vehicle seat according to the present invention, each part of the vehicle seat heater is changed in each part (seat surface part, back part, connection surface part, insertion part) having different load characteristics. Since it can be satisfactorily extended in multiple directions, it is possible to reliably improve the extension strength of the entire vehicle seat heater and to realize a comfortable riding comfort.

1 is a perspective view of a vehicle including a vehicle seat according to an embodiment of the present invention. It is a perspective view of a vehicle seat provided with a vehicle seat heater. It is a top view of a cushion material. FIG. 3 is an enlarged cross-sectional view taken along the line II in FIG. 2. It is a top view of the vehicle seat heater. It is the II-II line principal part expanded sectional view of FIG. It is a side view of the state which mounted the cushion material and the seat heater on the bottom plate. It is a perspective view of a cushion material and a bottom plate. It is sectional drawing of a heater wire. It is a top view of the vehicle seat heater in a prior art.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. It should be noted that members, arrangements, and the like described below do not limit the present invention, and it goes without saying that various modifications can be made in accordance with the spirit of the present invention.
1 to 9 show an embodiment of the present invention. FIG. 1 is a perspective view of a vehicle provided with a vehicle seat. FIG. 2 is a perspective view of a vehicle seat provided with a vehicle seat heater. 3 is a plan view of the cushion material, FIG. 4 is an enlarged cross-sectional view taken along line II of FIG. 2, FIG. 5 is a plan view of a vehicle seat heater, and FIG. 6 is an enlarged cross-sectional view taken along line II-II of FIG. 7 is a side view of a cushion material and a seat heater placed on the bottom plate, FIG. 8 is a perspective view of the cushion material and the bottom plate, FIG. 9 is a sectional view of the heater wire, and FIG. It is a top view of the vehicle seat heater. In the figure, FR indicates the front of the vehicle body, and UP in the figure indicates the upper side of the vehicle body. Moreover, the left-right direction in the following description means the left-right direction in the state which faced the vehicle body front.

  The vehicle seat according to the present embodiment is suitably mounted on a straddle-type vehicle on which an occupant such as a motorcycle, a motor tricycle, a snowmobile, and a water bike rides. The example mounted in a mobile is shown. The vehicle seat of the present invention is not limited to the straddle type, and includes seats for automobiles, railways, aircraft, ships, and the like.

  As shown in FIG. 1, the vehicle seat 10 provided in the vehicle 1 according to the present embodiment is a tandem seat including a front seat 10a and a rear seat 10b, and between the front seat 10a and the rear seat 10b. Is formed with a backrest 10c for supporting the waist of the occupant seated on the front seat 10a. As shown in the figure, the seating surface of the rear seat 10b is one step higher than the seating surface of the front seat 10a.

  As shown in FIG. 2, the vehicle seat 10 includes a cushion material 11, a skin material 12 covering the cushion material 11, a vehicle seat heater H disposed between the cushion material 11 and the skin material 12, And a bottom plate 15 on which smooth irregularities are formed for placing the cushion material 11. The cushion material 11 and the skin material 12 are formed into a predetermined shape. In addition, in FIG. 2, the state which cut off the skin material 12 ahead of the rear seat 10b is illustrated.

  The cushion material 11 is made of stretchable urethane foam or the like, and is fixed in a state where it is placed on the upper surface of the bottom plate 15 made of synthetic resin or the like. As shown in FIGS. 2 and 3, the cushion material 11 includes a front seat surface portion 11a that constitutes the front seat 10a, a rear seat surface portion 11b that constitutes the rear seat 10b, and a back surface portion 11c that constitutes the backrest 10c. And have. The front seat surface portion 11a is formed such that the width between both side edges of the front seat surface portion 11a in the left-right direction of the vehicle body becomes narrower from the vehicle body rear side toward the vehicle body front side, and mainly supports the occupant's buttocks from below. The back surface portion 11c extends upward from the vehicle body rear side edge of the front seat surface portion 11a and toward the rear of the vehicle body, and mainly supports the occupant's waist from the rear. The front seat surface portion 11a corresponds to the seat surface portion of the vehicle seat of the present invention.

  Further, as shown in FIG. 2, a vehicle seat heater H, which will be described later, is disposed on the front seat surface portion 11a and the back surface portion 11c. The portion of the vehicle seat heater H that is placed on the front seat surface portion 11a is disposed at a predetermined distance from the left and right edges 11m and 11n and the front edge portion of the front seat surface portion 11a. .

  As shown in FIG. 3, between the front seat surface portion 11 a and the back surface portion 11 c of the cushion material 11, as a space for suspending the skin material 12 covering the cushion material 11 toward the bottom plate 15, the cross section is substantially concave. The hanging groove 11f is formed along the left-right direction of the vehicle body. In addition, at positions spaced apart from the left and right ends of the hanging groove 11f by a predetermined distance, long holes 11g for inserting the pulling portions when the skin 12 is suspended to the bottom plate 15 side, 11h is formed so as to penetrate from the upper side to the lower side, that is, from the front seat surface part 11a side to the bottom plate 15 side. The suspension groove 11f, which is a space for suspending the skin material 12, further has a function as a space for inserting a part of a vehicle seat heater H described later. At this time, the insertion parts 24 and 25 of the base material 20 to be described later are inserted into the holes 11g and 11h, respectively.

  The skin material 12 is made of wooly nylon, vinyl leather or the like having elasticity, and is shaped in advance so as to be able to cover the cushion material 11 from above. In addition, the edge part of this skin material 12 is being fixed to the back side edge part of the bottom plate 15 with a tucker etc., for example.

  FIG. 4 shows a cross section of a region of the front seat 10a where the vehicle seat heater H is disposed. The region where the vehicle seat heater H of the backrest 10c is disposed also has the same configuration. In this embodiment, the base material 20 of the vehicle seat heater H is placed and fixed on the cushion material 11 via an adhesive sheet 14 such as a double-sided adhesive tape, and the high-density foam material 13 is further placed thereon. It is formed by covering with the skin material 12. When soft / semi-soft slab urethane is used for the foam material 13, it is possible to obtain a good seating feeling and to effectively absorb vibration transmitted from the vehicle body due to the characteristics of the slab urethane that can be expanded and contracted in multiple directions. Therefore, it is possible to obtain a comfortable ride, which is extremely suitable.

  The fixing of the base material 20 of the vehicle seat heater H to the cushion material 11 is not limited to the adhesive sheet 14, and may be fixed using, for example, an adhesive or may be fixed by sewing or the like. Moreover, it is good also as a structure which coat | covers the cushion material 11 and the vehicle seat heater H directly with the skin material 12, without interposing the foaming material 13 between the cushion material 11 and the skin material 12 like this embodiment.

  As shown in FIG. 5, the vehicle seat heater H of the present embodiment includes a planar base material 20, a heater wire 30 fixed to the base material 20, a thermistor 51, a controller 52, a breaker 53, An electric wire 54, a connector 55, and the like are included. The heater wire 30 may be fixed on the base material 20 by adhesion or the like, or may be folded into the base material 20 as shown in FIG.

  The base material 20 includes a seating surface side placement portion 21, a back surface side placement portion 22, a connection surface portion 23 formed between the seating surface side placement portion 21 and the back surface side placement portion 22, a pair of insertion portions 24, 25, and these are integrally formed, that is, formed of a member such as an integral cloth material. The base material 20 is formed of a multi-directionally stretchable member made of a nonwoven fabric such as polyester (for example, polyethylene terephthalate) or a foamed material such as polyurethane foam.

  The seating surface side arrangement part 21 is a part arranged on the front side seating surface part 11a of the cushion material 11, and the width between both side edges in the left and right direction of the vehicle body corresponds to the shape of the front side seating surface part 11a. It is formed in a substantially trapezoidal shape so as to become narrower from the vehicle body toward the front side of the vehicle body. Further, both side edges of the seating surface side arrangement portion 21 in the left-right direction of the vehicle body are disposed at predetermined distances inward from the left and right edge portions 11m and 11n (see FIG. 2) of the front seating surface portion 11a. It is formed in such a shape and size. The predetermined distance from the left and right edge portions 11m and 11n is a distance that avoids the region where the maximum load from the occupant is applied. Thus, by providing the predetermined distance from the edge portions 11m and 11n, the vehicle seat The durability of the heater H can be improved.

  The rear side arrangement part 22 is formed in a substantially rectangular shape, and from the position excluding the left and right end parts in the vehicle body rear side end part (end part on the side where the trapezoid is widely formed) of the seat surface side arrangement part 21. It extends toward the rear of the car. This back side arrangement | positioning part 22 is a part arrange | positioned on the back surface part 11c of the cushioning material 11, may have shapes other than a rectangle, and is formed in the shape and magnitude | size which can be arrange | positioned on the back surface part 11c. It only has to be done.

The connection surface portion 23 is a connection portion that is continuously and integrally formed between the seat surface side arrangement portion 21 and the back surface side arrangement portion 22. The connecting surface portion 23 is provided as a play (slack portion) for preventing the base material 20 from being in a tension state when the base material 20 is disposed on the cushion material 11. Specifically, as shown in FIG. 6, the connection surface portion 23 is inserted into the hanging groove 11 f of the cushion material 11 in a bent (deflected) state, and the seat surface side disposition portion 21 is disposed on the front seat. The back side arrangement | positioning part 22 is arrange | positioned on the surface part 11a on the back part 11c, respectively.
FIG. 6 is a cross-sectional view of a state in which the vehicle seat heater H is placed and fixed on the cushion material 11 and the foam material 13 is placed and then covered with the skin material 12 and the skin material 12 is suspended. Reference numeral 12a denotes a stitched portion of the skin material 12, and 12b denotes a suspension member. The suspending method shown in FIG. 6 is an example, and is not limited to this, and a known technique can be used as appropriate.

  Thus, by providing the base material 20 with a play (slack part) between the seating surface side arrangement part 21 and the back surface side arrangement part 22, the seating surface side arrangement part 21 and the back surface side arrangement part are arranged. 22 are pulled together and are not disposed on the cushion material 11 in a tensioned state. Therefore, even if a tensile force is generated in the seating surface side placement portion 21 due to the load movement of the occupant seated on the front side seating surface portion 11a, it is possible to prevent the tensile force from being transmitted to the back side placement portion 22. The deformation of the vehicle seat heater H can be prevented. Thus, durability can be improved, forming the seat side arrangement part 21 and the back side arrangement part 22 of the vehicle seat heater H integrally.

  As the space for housing the connection surface portion 23 of the vehicle seat heater H, the hanging groove 11f for suspending the skin material 12 can be used, so that the connection surface portion 23 can be formed without adding a special configuration or member. Can be folded (bent). In addition, the hanging groove 11f is provided between the front seat surface portion 11a and the back surface portion 11c and has a concave shape from the surface of the cushion material 11 to the inside, that is, the bottom plate 15 side. The bent (bent) portion is not affected by contact with the passenger. Therefore, the durability of the vehicle seat heater H is improved.

  The insertion portions 24 and 25 extend in a belt shape from the left and right end portions of the rear end portion of the seat surface side arrangement portion 21 (the end portion on the side where the trapezoid is widely formed) toward the rear of the vehicle body. When the base material 20 is disposed on the cushion material 11, the holes 20 are formed in the holes 11 g and 11 h (see FIGS. 2 and 3) of the cushion material 11 with predetermined widths that can be inserted from above.

  As shown in FIG. 5, a thermistor 51 as a sensor for detecting the temperature of the vehicle seat heater H and a controller 52 for controlling the temperature of the vehicle seat heater H are electrically connected to the insertion portion 24 on one side. It is attached by a technique such as sewing or adhesion in a state where it is connected to. The thermistor 51 and the controller 52 include a heater wire 30 fixed to the seating surface side arrangement part 21 and the back side arrangement part 22, a power source (not shown) provided on the vehicle body side, and ON / OFF of the vehicle seat heater H. Electric wires 54 that can be connected to a switch (not shown) or the like are connected to each other. Further, a connector 55 that can be engaged with and disengaged from an electric wire (not shown) extending from the vehicle body side is provided at the distal end portion of the electric wire 54.

  An automatic return type breaker 53 for preventing overheating is attached to the insertion portion 25 on the other side by a technique such as sewing or adhesion. The breaker 53 is electrically connected to the heater wire 30 that is fixed to the seating surface side arrangement portion 21, the back surface side arrangement portion 22, and the like.

  The portions where the thermistor 51, the controller 52, and the breaker 53 of the insertion portions 24 and 25 are disposed are bonded between two cloth materials by bonding a cloth material (not shown) equivalent to the base material 20 together. It is preferable that the devices are arranged so as to be sandwiched. That is, the insertion portions 24 and 25 are configured such that the thermistor 51, the controller 52, and the breaker 53 are sandwiched between the base material 20 provided with the heater wire 30 (insertion portion heater wires 34 and 35) and the other cloth material. By doing so, these devices can be protected.

  The thermistor 51 is connected to the heater wire 30 and is arranged to detect a change in electrical resistance accompanying a temperature change of the heater wire 30 and detect the temperature of the heater wire 30. The thermistor 51 is connected to the controller 52, and the controller 52 controls the level of the heater wire 30 by controlling the resistance value in conjunction with the thermistor 51. The controller 52 is also connected to a heater switch, and is designed so that the temperature of the heater wire 30 can be switched.

  As shown in FIG. 5, the heater wire 30 is connected to the seat surface side heater wire 31 fixed to the seat surface side arrangement portion 21, the back surface side heater wire 32 fixed to the back surface side arrangement portion 22, and the connection surface portion 23. The connecting portion heater wire 33 to be fixed and the insertion portion heater wires 34 and 35 to be fixed to the insertion portions 24 and 25 are wired on the base material 20 with a predetermined wiring pattern by one line. Has been.

  The seating surface side heater wire 31 has a substantially symmetrical wave shape, extends from the approximate center of the seating surface side arrangement portion in the left-right direction of the vehicle body, and is provided with a plurality of first extensions arranged substantially parallel to each other at a predetermined distance from each other. A plurality of side portions 31b disposed so as to connect the end portions of the first extending portion 31a in the vicinity of the left and right side edges of the seating surface side arrangement portion 21; It is bonded and fixed on a seating surface side arrangement portion 21 constituting the material 20.

  The first extending portion 31a is wired so as to be substantially symmetrical on both the left and right sides of the central portion 21a located at the center of the seat surface side arrangement portion 21 in the left-right direction of the vehicle body, and has a predetermined interval in the front-rear direction of the vehicle body. Opened and wired almost parallel. Further, the first extending portion 31a has a width in the left-right direction of the vehicle body that increases from the vehicle body front side to the vehicle body rear side corresponding to the shape of the seating surface side arrangement portion 21 formed in a substantially trapezoidal shape. Is formed.

  And the 1st extension part 31a is formed in the waveform so that a peak part and a trough part may continue, and when the extension force of the vehicle body left-right direction acts on the seat surface side arrangement | positioning part 21 by this, The extending portion 31 a can also be extended together with the seating surface side arranging portion 21. In addition, the ridges and valleys are formed in large numbers as the ridges and valleys move from the front side of the vehicle body toward the rear side of the vehicle body, corresponding to the width of the first extending portion 31a in the left-right direction of the vehicle body.

  With the above configuration, a lot of ridges and valleys are formed on the rear side of the vehicle that easily receives a load from the occupant's buttocks and crotch, i.e. Even when a load in the left-right direction of the vehicle body is input due to the weight shift of the occupant during vehicle travel, the rear side of the vehicle seat heater H can be favorably deformed in the left-right direction of the vehicle body. Therefore, the seating feeling of the vehicle seat can be reliably improved, and damage to the vehicle seat heater can be suppressed.

  The side portion 31b is a portion that connects the ends of the first extending portions 31a adjacent to each other in the longitudinal direction of the vehicle body in the vicinity of the left and right side edges of the seating surface side arrangement portion 21. Among the plurality of side portions 31b, the side portions 31b disposed in the portions excluding the front edge side and the rear side of the seat surface side arrangement portion 21 are along the left and right side edge portions of the seat surface side arrangement portion 21. , Provided substantially parallel to the side edge. Thus, because a part of the seating surface side heater wire 31 is disposed along the side edge of the seating surface side arrangement portion 21, a heater region matched to the shape of the base material 20 can be secured. The occupant's buttocks can be warmed up efficiently.

  The back side heater wire 32 has a pair of second extending portions 32 a and 32 a and is bonded and fixed on the back side arrangement portion 22 of the base material 20. The pair of second extending portions 32a and 32a are disposed along the back surface portion 11c from the front side of the vehicle body toward the upper side of the vehicle body, and are inclined so that the distance between the left and right sides of the vehicle body becomes narrower. In addition to being wired in the direction, each is formed into a wave shape so that a peak and a valley are continuous. In the present embodiment, since the pair of second extending portions 32a and 32a are wired as described above, the stretching force in the longitudinal direction of the vehicle body and in the lateral direction of the vehicle body from the waist portion of the occupant to the rear side arrangement portion 22. The second extending portion 32a can also be extended together with the back side arrangement portion 22 when the action is applied.

  The first extending portions 31a and 31a are disposed such that the distance between the portions closest to each other is smaller than the distance between the plurality of second extending portions 32a and 32a closest to each other. That is, in the seat surface side heater wire 31, the interval between the first extending portions 31 a and 31 a disposed adjacently in parallel is the second extending portion 32 a disposed adjacent to the back surface heater wire 32. It arrange | positions so that it may become smaller than the space | interval.

  As described above, in the vehicle seat heater H of the present invention, when the occupant is seated, the seat surface side heater wire 31 fixed to the seat surface side arrangement portion 21 to which a large load is applied in the vertical direction due to the weight of the occupant has a high density. It is wired with. Accordingly, the seating surface side arrangement portion 21 and the seating surface side heater wire 31 disposed on the seating surface portion 11a have high strength against the load.

  On the other hand, when the occupant is seated, the back surface portion 11c to which a large load does not act as compared to the seat surface portion 11a is wired so that the density of the disposed back side heater wires 32 is low. Therefore, the back side arrangement part 22 and the back side heater wire 32 arranged on the back part 11c have a particularly high expansion rate in the vertical direction.

  In this way, in the vehicle seat heater H that requires different extension characteristics for each part, wiring is performed with different heater line intervals as described above, thereby providing various extension characteristics and increasing strength against extension loads. The vehicle seat heater H can be provided.

  The connection portion heater wire 33 is adhesively fixed on the connection surface portion 23 of the base material 20 and electrically connects the seat surface side heater wire 31 and the back surface side heater wire 32. And since the connection part heater wire 33 is provided in the connection surface part 23 which does not require a heating effect, the wiring amount of the connection part heater wire 33 can be made minimum necessary. As a result, the possibility of disconnection can be reduced.

Further, the interval between the connection portion heater wires 33 and 33 is wider than the interval between the first extending portions 31 a and 31 a provided in the seating surface side arrangement portion 21. Therefore, compared with the seating surface side arrangement | positioning part 21, the extensibility in the connection surface part 23 can be set highly.
Furthermore, the connection part heater wire 33 is provided, and the first extension part 31a and the side part 31b fixed to the seat surface side arrangement part 21 and the second extension part 32a fixed to the back side arrangement part 22 are connected. Thus, since the vehicle seat heater H can be disposed without generating a gap between the seat surface portion 11a and the back surface portion 11c constituting the cushion material 11, the passenger seated on the vehicle seat 10 can be provided. A sufficient feeling of heating can be given.

  The insertion portion heater wire 34 is bonded and fixed on the insertion portion 24 of the base material 20, and is fixed to the insertion portion 24 and two lines respectively extending from the seat surface side heater wire 31 and the back surface side heater wire 32. The thermistor 51 and the controller 52 are connected. The two wires constituting the insertion portion heater wire 34 meander in the longitudinal direction of the vehicle body and are arranged substantially parallel to each other.

  The insertion portion heater wire 35 is bonded and fixed on the insertion portion 25 of the base material 20, and is fixed to the insertion portion 25 and two lines respectively extending from the seat surface side heater wire 31 and the back surface side heater wire 32. The breaker 53 is connected. The two wires constituting the insertion portion heater wire 35 meander in the longitudinal direction of the vehicle body and are arranged substantially parallel to each other.

  The insertion portions 24 and 25 are inserted into the hole portions 11g and 11h of the cushion material 11 and locked to the wall portions 11k and 11l. The insertion portions 24 and 25 are easily subjected to a load extending in the vertical direction due to the seating load of the occupant and the own weight of the temperature control means (thermistor 51, controller 52, breaker 53). However, when the insertion portion heater wire 35 is configured as described above, the insertion portions 24 and 25 are particularly easy to extend in the vertical direction, and the strength against the extension load is improved.

  The seating surface side arrangement portion 21 of the seat heater H is arranged on the front side seating surface portion 11a. And the insertion part 24 to which the insertion part heater wire 34, the thermistor 51, and the controller 52 were fixed, and the insertion part 25 to which the insertion part heater wire 35 and the breaker 53 were fixed were the holes formed in the cushion material 11, respectively. 11g and the hole 11h are inserted.

  The holes 11g and 11h are formed so as to penetrate from the front seat surface part 11a side of the cushion material 11 to the bottom plate 15 side, and the insertion parts 24 and 25 are respectively inserted along the cushion material 11 into the holes 11g and 11h. ing.

  Thus, by inserting the insertion portions 24 and 25 between the cushion material 11 and the skin material 12, the thermistor 51, the controller 52, and the breaker 53 provided in the insertion portions 24 and 25 are vibrated, dusty, and the like. Can be protected from.

  The insertion portions 24 and 25 are disposed between the cushion material 11 and the bottom plate 15, more specifically, in the recesses 11i and 11j, respectively (see FIGS. 7 and 8). And the recessed parts 11i and 11j are equipped with the wall parts 11k and 11l, and are formed in the bottom plate 15 side of the cushioning material 11. FIG. The wall portions 11k and 11l are formed so as to cut out positions corresponding to the hole portions 11g and 11h on the surface of the cushion material 11 on the side where the bottom plate 15 is disposed.

  The electric wire 54 electrically connected to the insertion portion heater wire 34 disposed on the insertion portion 24 extends through the hole 15a provided in the bottom plate 15 to the back side of the bottom plate 15, that is, the vehicle body side. . Since the vehicle seat 10 of the present invention is integrally provided on the bottom plate 15 with the cushion material 11, the vehicle seat heater H, the skin material 12, and the like, it can be easily attached to the vehicle body. Become.

  FIG. 8 is a perspective view from the back side of the cushion material 11 and the bottom plate 15 where the seated person is not seated, and is a diagram illustrating a state before the cushion material 11 is placed on the bottom plate 15.

  As described above, after the insertion portions 24 and 25 are inserted into the recesses 11i and 11j, the insertion portions 24 and 25 are bonded and fixed to the wall portions 11k and 11l, respectively. At this time, it is preferable that the adhesive sheet 14 is bonded and fixed using a bonding member such as a bonding member such as a double-sided tape or an adhesive. By adopting the above configuration, the thermistor 51, the controller 52, and the breaker 53 are disposed between the bottom plate 15 and the cushioning material 11, so that these devices can be protected from external impacts, which is preferable. It is.

Even when the cushion material 11 is placed on the bottom plate 15, the wall portion 11 k is not in contact with the surface provided with the hole 15 a of the bottom plate 15, and the space between the wall portion 11 k and the bottom plate 15. Is provided with a recess 11i.
Similarly, when the cushion material 11 is placed on the bottom plate 15, the recess 11j is not in contact with the wall 11l and the bottom plate 15, and becomes hollow.

  The recesses 11i and 11j are formed by being divided by a partition wall, and are disposed separately at the left and right positions of the vehicle. The partition wall is arranged to be deviated from the center position of the vehicle to either the left or right side. As a result, the recesses 11i and 11j are formed with different sizes. FIG. 8 shows a configuration in which the thermistor 51 and the controller 52 are disposed in the larger concave portion 11i, and the breaker 53 is disposed in the smaller concave portion 11j. The thermistor 51, the controller 52, and the breaker 53 are disposed so as to be accommodated in the recesses 11 i and 11 j of the cushion material 11.

With the above configuration, the recesses 11i and 11j can be used efficiently.
In the vehicle seat 10 of the present invention, temperature control means such as the thermistor 51, the controller 52, and the breaker 53 are not disposed on the seating side of the seated person, that is, on the front seat surface portion 11a. Therefore, since no load is applied to the temperature control means when the seated person is seated, damage to the temperature control means can be prevented.

  Further, since the insertion portions 24 and 25 are respectively bonded to the wall portions 11k and 11l and disposed in the recesses 11i and 11j, they do not contact the bottom plate 15. As described above, when the recesses 11i and 11j are formed between the bottom plate 15 and the vehicle body, it is possible to absorb the vibration from the vehicle body side and further reduce the vibration.

  Further, the insertion portions 24 and 25 are inserted from the front seat surface portion 11a side to the bottom plate 15 side through the holes 11g and 11h and are fixed to the wall portions 11k and 11l of the recess portions 11i and 11j. , 25 are not twisted, so that it is difficult for a physical load to be applied to the insertion portion heater wires 34, 35 disposed in the insertion portions 24, 25, and damage can be prevented.

  Next, the heater wire 30 which comprises the vehicle seat heater H is demonstrated with reference to FIG. As shown in FIG. 9, the heater wire 30 is formed to include a core member 30a, a heating element layer 30b, an insulator layer 30c, and a heat fusion layer 30d.

  The core material 30a is formed by bundling fibers having extremely high tensile strength and heat resistance, for example, aromatic polyamide fibers. The heating element layer 30b is provided so as to cover the outer periphery of the core member 30a. For example, a plurality of heating element strands made of a tin-plated hard tin-containing copper alloy wire (SNCC) are bundled. The insulator layer 30c is made of a fluororesin such as tetrafluoroethylene-hexafluoropropylene copolymer (FEP) and is formed so as to cover the outer periphery of the heating element layer 30b.

  The heat-sealing layer 30d is an adhesive layer for heat-welding the heater wire 30 onto the substrate 20, and for example, by applying a thermoplastic curable adhesive such as hot melt on the outer periphery of the heating element layer 30b. Is formed. Here, since the thermoplastic curable adhesive such as hot melt is easily impregnated with polyester such as polyethylene terephthalate constituting the base material 20 and has extremely high adhesive strength, hot melt or the like is used as the heat fusion layer 30d. If used, the heater wire 30 can be easily and firmly bonded and fixed to the substrate 20.

  Thus, by providing the heater wire 30 with the core material 30a having extremely high tensile force and heat resistance, the heater wire 30 having excellent flexibility and tensile strength can be obtained. Note that the heater wire 30 is not limited to the one having the above-described configuration, and for example, the outer circumference of a heating wire formed of stainless steel, copper, or the like may be provided with an insulating coating such as a fluororesin.

Next, a method for assembling the vehicle seat 10 including the vehicle seat heater H according to the present invention will be described.
First, the vehicle seat heater H is inserted into the suspension groove 11f of the cushion material 11 in a state where the vehicle seat heater H is bent around the connection surface portion 23 of the substrate 20 and the connection surface portion 23 is bent (bent) (see FIG. 6). .

  Thereafter, in the base material 20 constituting the vehicle seat heater H, the insertion portions 24 and 25 are inserted into the holes 11g and 11h, respectively. The insertion portions 24 and 25 are respectively inserted into the hole portion 11g and the hole portion 11h formed through the cushion material 11 from the front seat surface portion 11a side of the cushion material 11, and are arranged on the back surface side of the cushion material 11. Established. In the insertion portion 24, the insertion portion heater wire 34, the thermistor 51 and the controller 52 are fixed, and the insertion portion heater wire 35 and the breaker 53 are fixed to the insertion portion 25 (see FIGS. 2 and 5). .

  Next, the seating surface side arrangement part 21 and the back surface side arrangement part 22 of the base material 20 are attached to the front side seating surface part 11a and the back surface part 11c of the cushion material 11 via the adhesive sheet 14, respectively. At this time, the adhesive sheet 14 is not necessarily used, and the vehicle seat heater H may be attached using an adhesive or the like as appropriate. Thereby, the attachment of the vehicle seat heater H to the cushion material 11 is completed.

  Next, the cushion material 11 is placed on the bottom plate 15 and fixed using an adhesive or the like. At this time, the insertion portion 24 to which the thermistor 51 and the controller 52 are fixed and the insertion portion 25 to which the breaker 53 is fixed are arranged in a space portion (not shown) formed between the cushion material 11 and the bottom plate 15. Is done. In addition, the electric wire 54 and the connector 55 extending from the distal end of the insertion portion 24 are inserted from the hole 15a of the bottom plate 15 to the back surface side of the bottom plate 15, and fixed at a predetermined position on the back surface side of the bottom plate 15. .

  Thereafter, the foam material 13 is placed on the vehicle seat heater H, and the bottom plate 15, the cushion material 11, the vehicle seat heater H, and the foam material 13 are covered with the skin material 12 from above. At this time, the skin material 12 is suspended to the bottom plate 15 side through the holes 11g and 11h of the cushion material 11, and is fixed by a fixing member (not shown). And the edge part of the skin material 12 is fixed to the back side edge part of the bottom plate 15 with a tacker etc. FIG. Thereby, the vehicle seat 10 provided with the vehicle seat heater H is completed.

When the vehicle seat 10 configured as described above is assembled to the vehicle 1, the electric wire 54 fixed to the back surface side of the bottom plate 15 and the electric wire extending from the vehicle body side are connected via the connector 55. To do. Thereby, the vehicle seat heater H is electrically connected to the vehicle body side. In addition, the assembly | attachment to the vehicle 1 of the vehicle seat 10 can be assembled using a well-known technique. Thereby, the work of attaching the vehicle seat 10 to the vehicle 1 is completed.
In addition, since the attachment method of the said vehicle seat heater H or the assembly | attachment method of the vehicle seat 10 is an example, you may change these work processes suitably.

  As described above, according to the vehicle seat heater H and the vehicle seat 10 according to the present embodiment, the heater wires (the seat surface side heater wires 31 and the back surface side heater wires) of the respective parts provided in the vehicle seat heater H. 32, the connecting portion heater wire 33, and the insertion portion heater wires 34, 35) are wired with different shapes and intervals depending on the portion, so that different stretching characteristics can be provided for each portion. As a result, in the vehicle seat 10 in which the load acting on each part is greatly different, the vehicle seat 10 has an extension characteristic suitable for each part, can be easily extended, and a good seating feeling can be obtained.

  Further, the vehicle seat heater H is integrally formed with a vehicle seat heater disposed on the front seat 10a side of the vehicle seat 10 and a vehicle seat heater disposed on the backrest 10c side of the vehicle seat 10. Therefore, in order to warm both the front seat 10a side and the backrest 10c side of the vehicle seat 10, one vehicle seat heater H may be attached to the cushion material 11, and the number of parts can be reduced. Can be reduced. Moreover, the attachment work to the cushion material 11 of the vehicle seat heater H can be simplified.

  Further, since the vehicle seat heater disposed on the front seat 10a side and the vehicle seat heater disposed on the backrest 10c side of the vehicle seat 10 are integrally formed, the front seat 10a side, The vehicle seat heater H can be disposed without generating a gap between the backrest 10c side. Therefore, it is possible to reliably warm the area that is in contact with the occupant's buttocks and the lumbar region of the occupant seated on the vehicle seat 10, thereby providing a sufficient comfort.

  Further, the vehicle seat heater H is inserted into a hanging groove 11f formed between the front seat surface portion 11a and the back surface portion 11c of the cushion material 11 in a state where the connection surface portion 23 of the base material 20 is bent. The cushion material 11 is attached. That is, in the vehicle seat heater H, a play (slack portion) is formed between the seat surface side arrangement portion 21 and the back surface side arrangement portion 22 by the bent connection surface portion 23. It can be avoided that H is fixed to the cushion material 11 in a tensioned state. Therefore, even if a tensile force is generated in the seating surface side placement portion 21 due to the load movement of the occupant seated on the front side seating surface portion 11a, it is possible to prevent the tensile force from being transmitted to the back side placement portion 22. The deformation of the vehicle seat heater H can be prevented. As described above, the durability of the vehicle seat heater H can be improved while integrally forming the seat side arrangement portion 21 and the back side arrangement portion 22 of the vehicle seat heater H. Further, the bent (flexed) portion of the connection surface portion 23 is housed in the hanging groove 11f and is not affected by contact with the occupant, which is more preferable in terms of durability.

  Moreover, the seat heater H for vehicles has the seating surface side arrangement | positioning part 21 of the base material 20 formed in the trapezoid shape. More specifically, the seat surface side arrangement portion 21 is formed in a trapezoidal shape that is formed wider as the width between both side edges in the left-right direction of the vehicle body moves from the vehicle body front side to the vehicle body rear side. For this reason, the comfort area of the occupant is improved by reducing the heating area of the front seat surface portion 11a on the front side of the vehicle body and sufficiently securing the heating area on the rear side of the vehicle body, that is, in the area where the occupant's buttocks are located. At the same time, the front seat surface portion 11a can be efficiently warmed.

  Furthermore, the seating surface side arrangement portion 21 of the base material 20 is disposed at a predetermined distance inward from the edge portions 11m and 11n on both sides of the front seating surface portion 11a in the left-right direction of the vehicle body. It is preferable to set the predetermined distance to a distance that avoids a region where the maximum load from the occupant of the front seat surface portion 11a is applied. In particular, in the straddle-type vehicle seat 10 as in the present embodiment, the vehicle seat heater H is disposed so as to avoid the region where the maximum load from the occupant is applied at both side ends of the front seat surface portion 11a. Thus, it is difficult to be affected by the passenger's load movement and the like, and the durability of the vehicle seat heater H can be improved.

  The heater wire 30 of the vehicle seat heater H includes a seating surface side heater wire 31 fixed to the seating surface side arrangement portion 21, a back surface side heater wire 32 fixed to the back surface side arrangement portion 22, and a seating surface side heater wire. 31 and the connection part heater wire 33 which electrically connects the back side heater wire 32, and is comprised. Further, the seat surface side heater wire 31 and the back surface side heater wire 32 are electrically connected by a connection portion heater wire 33, and in the present embodiment, it is constituted by one continuous heater wire 30. Therefore, the number of wiring connections accompanying the attachment of the vehicle seat heater H can be reduced, and the attachment work can be simplified.

  In the present embodiment, the heater wires wired in a meandering manner along the longitudinal direction of the vehicle body are arranged in two rows on the seating surface side arrangement portion 21 constituting the base material 20, but three or more rows may be used. Good.

  Moreover, although the area | region heated with the sheet | seat heater H for 1 sheet | seat was made into the front seat 10a and the backrest 10c, you may comprise so that the rear seat 10b may be included further.

  In the present embodiment, the thermistor 51, the controller 52, and the breaker 53 are fixed to the insertion portion 24 and the insertion portion 25 of the base material 20, respectively, but these may not be fixed. Moreover, although the insertion part 24 to which the insertion part heater wire 34 was fixed and the insertion part 25 to which the insertion part heater wire 35 was fixed were provided in the base material 20, it is also possible to comprise so that these may not be provided. It is.

  Further, in the present embodiment, the thermistor 51 and the controller 52 are attached to the insertion portion 24 provided on the rear left side of the seat surface side arrangement portion 21 and the insertion portion 25 provided on the rear right side of the seat surface side arrangement portion 21. However, the arrangement of the left and right is not limited to this, and the breaker 53 may be attached to the insertion portion 24 on the left rear side of the vehicle body, and the thermistor 51 and the controller 52 may be attached to the insertion portion 25 on the right rear side of the vehicle body. Good. Further, the thermistor 51, the controller 52, and the breaker 53 may be attached to any one of the insertion portions 24 and 25. Moreover, in this embodiment, although it has set as the structure provided with the breaker 53 which prevents that an overcurrent flows, it can also be comprised so that this may not be provided, and a structure can be changed suitably.

  In the present embodiment, an example in which a vehicle seat heater is disposed in a snowmobile has been shown. However, the present invention is not limited to this, and the vehicle seat heater of the present invention is a straddle type such as a motorcycle, a motor tricycle, and a water bike. It is possible to attach to the seats of vehicles such as automobiles, automobiles, railways, airplanes and ships.

H Seat heater 1 for vehicle 10 Vehicle seat 10a Front seat 10b Rear seat 10c Backrest 11 Cushion material 11a Front seat surface (seat surface)
11b Rear side seat surface portion 11c Back surface portion 11f Hanging groove 11g, 11h Hole portion 11i, 11j Recessed portion 11k, 11l Wall portion 11m, 11n Edge portion 12 Skin material 12a Suture portion 12b Lifting member 13 Foaming material 14 Adhesive sheet 15 Bottom Plate 15a Hole 20 Base material 21 Seat surface side arrangement part 21a Center part 22 Back side arrangement part 23 Connection surface part 24, 25 Insertion part 30 Heater wire 30a Core material 30b Heat generating body layer 30c Insulator layer 30d Thermal fusion layer 31 Seat surface Side heater wire 31a First extending portion 31b Side portion 32 Rear side heater wire 32a Second extending portion 33 Connection portion heater wires 34, 35 Insertion portion heater wire 51 Thermistor 52 Controller 53 Breaker 54 Electric wire 55 Connector 100 Vehicle seat heater 130 heater wire 152 controller

Claims (5)

A straddle-type cushioning material having a sheet-like base material having elasticity and a heater wire fixed over substantially the entire area of the base material and having a seating surface portion and a back surface portion, and an outer skin covering the cushioning material A vehicle seat heater disposed between the materials,
The base material includes a seating surface side placement part fixed on the seating surface part, and a back surface side placement part fixed on the back surface part,
The heater wire has a seat surface side heater wire fixed to the seat surface side arrangement portion, and a back surface side heater wire fixed to the back surface side arrangement portion,
The seat surface side heater wire includes a plurality of first extending portions and side portions that connect ends of the first extending portions,
The backside heater wire includes a plurality of second extending portions that extend in a substantially symmetrical wave shape above the vehicle body and are spaced apart from each other by a predetermined distance.
The distance between the portions where the plurality of first extending portions are closest to each other is smaller than the distance between the portions where the plurality of second extending portions are closest to each other. Vehicle seat heater. The cushion material has a hanging groove for hanging the base material between the seat surface portion and the back surface portion,
The base material further includes a connection surface portion that is provided between the seat surface side arrangement portion and the back surface side arrangement portion and is attached to the hanging groove in a bent state.
The heater wire further includes a plurality of connection portion heater wires that are electrically connected to the seat surface side heater wire and the back surface side heater wire and fixed to the connection surface portion,
The distance between the closest portions of the plurality of connecting portion heater wires is set to be larger than the distance between the plurality of first extending portions that are closest to each other. Item 2. The vehicle seat heater according to Item 1. The base material further includes an insertion portion that extends from the seat surface side arrangement portion to the rear of the vehicle body, is attached with a temperature control means that controls the temperature of the heater wire, and is inserted into the cushion material.
The heater wire further includes a plurality of insertion portion heater wires extending from the seat surface side heater wire and fixed to the insertion portion,
The vehicle seat heater according to claim 1, wherein the insertion portion heater wire is formed in a wave shape and extends rearward of the vehicle body.   4. The second extending portion is disposed in an oblique direction so that a separation distance in the left-right direction of the vehicle body becomes narrower from the lower side of the vehicle body toward the upper side of the vehicle body. The vehicle seat heater according to one item.   The vehicle seat provided with the vehicle seat heater as described in any one of Claims 1 thru | or 4.

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