JP6275777B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat including a seat heater, and more particularly to a vehicle seat including a seat heater disposed on a seat cushion and a seat back.

2. Description of the Related Art Conventionally, various technologies have been proposed in which a seat-like heater is provided on a vehicle seat to improve comfort when a passenger is seated.
For example, a vehicle seat described in Patent Document 1 is known as a vehicle seat in which a seat heater is disposed between a cushion pad and a skin of a seat cushion.

As shown in FIGS. 10 and 11, the vehicle seat has a configuration in which a seat heater 102 is placed on the surface of the cushion pad 101 of the seat cushion 100 and the cushion pad 101 and the seat heater 102 are covered with a skin 103. .
The seat heater 102 includes a heater wire 102a and a base material 102b for fixing the heater wire 102a, and a part of the seat heater 102 is inserted so as to be folded back into a groove 101a provided on the surface of the cushion pad 101. It is assembled.
A pulling cloth 103a to be inserted into the groove 101a is sewn on the skin 103, and a hanging member 104 is further fixed to the pulling cloth 103a.
As shown in FIG. 11, the suspension member 104 is inserted into the groove 101 a of the cushion pad 101, and is hooked with the insert wire 105 embedded in the cushion pad 101 in advance.
In this way, the seat heater 102 is fixed between the cushion pad 101 and the skin 103.

Japanese Utility Model Publication No. 4-84040

However, although the vehicle seat as in Patent Document 1 is assembled by inserting a part of the seat heater 102 into the groove 101a of the cushion pad 101 so as to be folded back, the heater wire 102a inserted into the groove 101a No particular consideration was given to the direction of extension. Therefore, when the heater wire 102a is inserted into the groove 101a so as to extend in the depth direction of the groove, when the cushion pad 101 is deformed in a direction to compress the groove 101a by a load applied when the occupant is seated, The heater wire 102a may also be deformed.
Therefore, there has been a demand for a vehicle seat including a seat heater that can further suppress the deformation of the heater wire when the cushion pad is deformed in the direction of compressing the groove.
At the same time, there has been a demand for a vehicle seat including a seat heater that can suppress the deformation of the heater wire without requiring the addition of components and can improve durability.

  Further, although this vehicle seat is assembled by inserting a part of the seat heater 102 into the groove 101a of the cushion pad 101 so as to be folded back, details of the assembling work have not been considered. Therefore, there has been a demand for a vehicle seat equipped with a seat heater that can reduce product variations and further improve assembly workability.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle equipped with a seat heater capable of suppressing deformation of a heater wire when a cushion pad is deformed by a load applied when a passenger is seated. It is to provide a sheet for use.
Another object of the present invention is to provide a vehicle seat provided with a seat heater capable of suppressing the deformation of the heater wire without requiring the addition of components and improving the durability.
Another object of the present invention is to provide a vehicle seat provided with a seat heater capable of reducing product variations and improving assembly work.

According to the vehicle seat of the present invention, the subject is a vehicle seat provided with a seat heater between a cushion pad and a skin covering the cushion pad, and a groove is provided on a surface of the cushion pad. The seat heater is provided in the groove by connecting the first heater wire and the first heater wire to the first heater wire and the second heater wire arranged on the opposite sides of the groove. A groove portion heater wire, and the groove has a first corner portion located on a side where the first heater wire is disposed on both ends of the opening portion of the groove, and the second heater wire is disposed. A second corner portion located on the side of the groove, and the groove heater wire extends beyond the first corner portion and toward the bottom of the groove, and beyond the second corner portion. The other end that extends toward the bottom of the groove and the bottom of the groove Comprising a bent bent portion, of the one end and the other end portion of the groove heater wire is inclined at least one of the extending direction is the depth direction of the groove, the cushion pad And the seat heater is provided with a positioning portion for disposing the seat heater on the cushion pad, and the positioning portion includes a pad side positioning portion provided at the center in the left-right direction of the surface of the cushion pad. A seat heater side positioning portion provided at the center in the left-right direction of the seat heater, and when the seat heater is disposed on the cushion pad, the pad side positioning portion and the seat heater side positioning portion are It is solved by being configured to be placed together .

In this way, the groove heater wire has one end extending beyond the first corner toward the bottom of the groove, and the other end extending toward the bottom of the groove beyond the second corner. Since the extending direction of at least one of the one end portion and the other end portion of the groove portion heater wire is inclined with respect to the depth direction of the groove, the cushion pad is formed by the load applied when the occupant is seated. When deformed in the compressing direction, the cross-sectional area received by the groove heater wire can be increased particularly with respect to the compressive force applied to the opening of the groove, and deformation of the heater wire provided in the groove can be suppressed.
Moreover, since it is comprised in this way, a deformation | transformation of a heater wire can be suppressed and durability can be improved, without adding an additional component .

Further, the cushion pad and the seat heater are each provided with a pad side positioning portion and a seat heater side positioning portion as positioning portions for arranging the seat heater on the cushion pad, and the seat heater is provided on the cushion pad. When this is done, the pad side positioning portion and the seat heater side positioning portion are arranged together. Thus, since the positioning portion for arranging the seat heater cushion pad is provided, it is possible to improve the assembly work.

At this time , it is preferable that the pad-side positioning portion is a recess provided on the surface of the cushion pad , and the seat heater-side positioning portion is a notch portion in which a part of the seat heater is cut out. .
As described above, since the assembly is performed so that the position where the notch portion of the seat heater is aligned with the position where the recess of the cushion pad is provided, the assembling work can be further improved.

At this time , the pad-side positioning part is a convex part provided on the surface of the cushion pad , and the seat heater-side positioning part is a notch part of the seat heater cut out , and the cushion When the seat heater is disposed on the pad, it is preferable that the protrusion and the notch are configured to contact each other.
In this way, the position where the notch of the seat heater is aligned with the position where the protrusion of the cushion pad is provided, and the notch is brought into contact with the protrusion and can be assembled. Work can be further improved.

Further, according to the vehicle seat of the present invention, the subject is a vehicle seat provided with a seat heater between a cushion pad and an outer skin covering the cushion pad, and a groove is formed on the surface of the cushion pad. The seat heater is connected to the first heater wire and the second heater wire disposed on the opposite sides of the groove, and the second heater wire and the first heater wire are connected to each other in the groove. A groove heater wire provided, wherein the groove has a first corner portion located on the side where the first heater wire is disposed, at both ends of the opening of the groove, and the second heater wire A second corner portion located on the side where the groove portion is disposed, and the groove heater wire extends beyond the first corner portion toward the bottom portion of the groove, and the second corner portion. The other end of the groove extending toward the bottom of the groove, and the bottom of the groove A bent portion bent at the at least one of the one end portion and the other end portion of the groove heater wire is inclined with respect to the depth direction of the groove, A heater wire including one heater wire, the second heater wire, and the groove heater wire extends so as to intersect the groove, and the groove includes a first region in which the groove heater wire extends; A second region different from the first region, and the first region includes an escape portion whose length along the extension direction of the heater wire in the opening is longer than that of the second region. That is solved.
As described above, the first region has a relief portion whose length along the extending direction of the heater wire in the opening portion is longer than that of the second region, so that the cushion pad compresses the groove. In the case of deformation in the direction, the region including the groove heater wire can suppress the deformation amount of the cushion pad, so that the deformation of the heater wire provided in the groove can be further suppressed.

At this time, the front Symbol relief portion, it is preferable that spreads in a tapered shape from the bottom of the groove toward the opening.
With this configuration, when the cushion pad is deformed in the direction in which the groove is compressed, a larger compressive force is applied to the opening of the groove than to the bottom of the groove, so the escape portion extends from the bottom of the groove to the opening. By expanding toward the taper, the deformation amount of the cushion pad can be further suppressed, and the deformation of the heater wire provided in the groove can be further suppressed.

Further, the prior SL relief portion, with a recess which is arranged opposite to each other through said groove, recess, said is recessed toward the bottom of the groove, it is suitable and shallower than the depth of the groove.
With this configuration, when the cushion pad is deformed in the direction in which the groove is compressed, a greater compressive force is applied to the opening of the groove than to the bottom of the groove, so that the recess shallower than the depth of the groove By being provided on both sides, the amount of deformation of the cushion pad can be further suppressed, and the deformation of the heater wire provided in the groove can be further suppressed.

Further, according to the vehicle seat of the present invention, the subject is a vehicle seat provided with a seat heater between a cushion pad and an outer skin covering the cushion pad, and a groove is formed on the surface of the cushion pad. The seat heater is connected to the first heater wire and the second heater wire disposed on the opposite sides of the groove, and the second heater wire and the first heater wire are connected to each other in the groove. A groove heater wire provided, wherein the groove has a first corner portion located on the side where the first heater wire is disposed, at both ends of the opening of the groove, and the second heater wire A second corner portion located on the side where the groove portion is disposed, and the groove heater wire extends beyond the first corner portion toward the bottom portion of the groove, and the second corner portion. The other end of the groove extending toward the bottom of the groove, and the bottom of the groove A bent portion bent at the at least one of the one end portion and the other end portion of the groove heater wire is inclined with respect to the depth direction of the groove, The heater wire including one heater wire, the second heater wire, and the groove heater wire extends so as to intersect the groove, and the groove heater wire extends in the groove extending direction. A regulating member that regulates deformation in which the width of the groove in the front-rear direction is reduced when the cushion pad is deformed in a direction in which the groove is compressed with respect to a load applied to the cushion pad in a region different from the region to be This is solved by providing in the groove.
As described above, since the groove includes the restriction member, when the cushion pad is deformed in the direction in which the groove is compressed, the restriction member restricts deformation in the direction in which the groove of the cushion pad is compressed. Therefore, the heater provided in the groove The deformation of the line can be further suppressed.

In this case, the prior SL epidermis, the attached member hanging is inserted into the groove, the restricting member, when attached to the skin together with the hanging member that is attached to the inside of the groove preferably It is.
Since it is comprised in this way, since a control member can be attached simultaneously with the operation | work which inserts a suspending member in a groove | channel, an assembly operation | work can be improved further.

According to the present invention, the groove heater wire has one end extending toward the bottom of the groove beyond the first corner and the other end extending toward the bottom of the groove beyond the second corner. Since the extension direction of at least one of the one end and the other end of the groove heater wire is inclined with respect to the depth direction of the groove, the cushion pad is applied by the load applied when the occupant is seated. When the groove is deformed in the compressing direction, the sectional area received by the groove heater wire can be increased particularly with respect to the compressive force applied to the opening of the groove, and the deformation of the heater wire provided in the groove can be suppressed.
Moreover, since it is comprised in this way, a deformation | transformation of a heater wire can be suppressed and durability can be improved, without adding an additional component.
Furthermore, since the positioning part for arrange | positioning a seat heater to a cushion pad is provided, an assembly | attachment operation | work can be improved.

According to the present invention, the assembly operation can be further improved because the assembly is performed so that the position where the notch portion of the seat heater is aligned with the position where the recess of the cushion pad is provided.
According to the present invention, since the position where the notch portion of the seat heater is aligned with the position where the convex portion of the cushion pad is provided, the notch portion can be further brought into contact with the convex portion and assembled. Assembling work can be further improved.

According to the present invention, the first region includes the relief portion whose length along the extension direction of the heater wire in the opening portion is longer than that of the second region. Since the region including the groove heater wire can suppress the amount of deformation of the cushion pad, the deformation of the heater wire provided in the groove can be further suppressed.

According to the present invention, when the cushion pad is deformed in the direction of compressing the groove, a larger compressive force is applied to the opening of the groove than to the bottom of the groove, so that the relief portion tapers from the bottom of the groove toward the opening. By spreading in the shape, the deformation amount of the cushion pad can be further suppressed, and the deformation of the heater wire provided in the groove can be further suppressed.

According to the present invention, when the cushion pad is deformed in the direction in which the groove is compressed, a larger compressive force is applied to the opening of the groove than to the bottom of the groove, so that recesses shallower than the depth of the groove are provided on both sides of the groove. Accordingly, the amount of deformation of the cushion pad can be further suppressed, and the deformation of the heater wire provided in the groove can be further suppressed.

According to the present invention, since the groove includes the restriction member, when the cushion pad is deformed in the direction of compressing the groove, the restriction member restricts deformation in the direction of compressing the groove of the cushion pad. The deformation of the heater wire can be further suppressed.
According to the present invention, since the regulating member can be attached simultaneously with the operation of inserting the suspension member into the groove, the assembly operation can be further improved.

1 is a schematic perspective view of a vehicle seat according to the present invention. It is a schematic top view of the seat cushion according to the present invention, and shows a state in which a seat heater is placed on a cushion pad. It is a schematic front view of the seat back according to the present invention, and shows a state where a seat heater is placed on a cushion pad. FIG. 3 is a schematic perspective view of the seat cushion of FIG. 2 illustrating the first embodiment of the present invention, and is an enlarged view of a main part for explaining a state in which a seat heater is inserted into a groove. FIG. 4B is a schematic top view of the seat cushion of FIG. 4A, and is an enlarged view of a main part for explaining a state where the seat heater is inserted into the groove. It is explanatory drawing which looked at the AA cross section of the cushion pad of FIG. 2 which shows 1st Embodiment of this invention from the side. It is explanatory drawing which looked at the AA cross section of the cushion pad of FIG. 2 which shows 2nd Embodiment of this invention from the side. It is explanatory drawing which looked at the BB cross section of the cushion pad of FIG. 2 which shows 1st Embodiment of this invention from the side. It is explanatory drawing which looked at the AA cross section of the cushion pad of FIG. 2 which shows 3rd Embodiment of this invention from the side. It is explanatory drawing which looked at the BB cross section of the cushion pad of FIG. 2 which shows 3rd Embodiment of this invention from the side. It is explanatory drawing of the seat cushion provided with the seat heater of the prior art example. It is the figure which looked at CC cross section of the seat cushion of FIG. 10 from the side.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, the member, arrangement | positioning, etc. which are demonstrated below do not limit this invention, and can be variously changed in accordance with the meaning of this invention.

  FIG. 1 is a schematic perspective view of a vehicle seat according to the present invention. FIG. 2 is a schematic top view of the seat cushion according to the present invention, and shows a state in which the seat heater is placed on the cushion pad. FIG. 3 is a schematic front view of a seat back according to the present invention, and shows a state in which a seat heater is placed on a cushion pad. FIG. 4A is a schematic perspective view of the seat cushion of FIG. 2 showing the first embodiment of the present invention, and is an enlarged view of a main part for explaining a state in which a seat heater is inserted into a groove. FIG. 4B is a schematic top view of the seat cushion of FIG. 4A, and is an enlarged view of a main part for explaining a state in which the seat heater is inserted into the groove. FIG. 5 is an explanatory view of the cushion pad of FIG. 2 showing the first embodiment of the present invention as viewed from the side, taken along the line AA. FIG. 6 is an explanatory view of the cushion pad of FIG. 2 showing a second embodiment of the present invention as viewed from the side, taken along the line AA. FIG. 7 is an explanatory view of a BB cross section of the cushion pad of FIG. 2 showing the first embodiment of the present invention viewed from the side. FIG. 8 is an explanatory view of the cushion pad of FIG. 2 showing a third embodiment of the present invention as viewed from the side, taken along the line AA. FIG. 9 is an explanatory view of a BB cross section of the cushion pad of FIG. 2 showing the third embodiment of the present invention viewed from the side. FIG. 10 is an explanatory view of a seat cushion provided with a seat heater of a conventional example. FIG. 11 is a cross-sectional view of the seat cushion of FIG. 10 taken from the side.

The present embodiment is an invention relating to a vehicle seat provided with a seat heater.
As shown in FIG. 1, the vehicle seat S of the present embodiment includes a seat cushion 1, a seat back 2 disposed on the back side of the seat cushion 1, and a headrest 3 disposed on the upper surface side of the seat back 2. Consists mainly of.
The side on which the occupant is seated with respect to the seat back 2 of the vehicle seat S is the front side.

The seat cushion 1 is a seating portion that supports an occupant from below, and includes a seat cushion frame (not shown) serving as a skeleton, a cushion pad 10 placed on the seat cushion frame, and a seat cushion frame and the cushion pad 10. It is mainly composed of the covering skin 30.
The seat cushion 1 of the present embodiment further includes a seat heater 40 between the cushion pad 10 and the skin 30. The configuration of the seat heater 40 will be described later.

The seat back 2 is a backrest portion that supports the back of the occupant from behind, and includes a seat back frame (not shown) that serves as a skeleton, a cushion pad 11 placed on the seat back frame, a seat back frame, and a cushion pad. 11 and an outer skin 70 that covers 11.
The seat back 2 of the present embodiment further includes a seat heater 80 between the cushion pad 11 and the skin 70.
The headrest 3 is a head that supports the occupant's head from behind, and is formed by disposing a cushion pad on a pillar (not shown) serving as a core material and covering it with a skin.

The cushion pad 10 is a pad member made of urethane foam or the like. As shown in FIG. 2, the cushion pad 10 includes a front pad 10 a positioned on the front side, a center pad 10 b positioned on the center side, and a rear side. It is comprised from the back pad 10c located in the side.
Grooves 20 that are long in the left-right direction of the vehicle seat S are formed on the upper surface of the cushion pad 10.

The grooves 20 are provided at two locations so as to separate the upper surfaces of the front pad 10a and the center pad 10b in the front-rear direction and also to separate the upper surfaces of the center pad 10b and the rear pad 10c.
As shown in FIGS. 4A and 4B, each groove 20 has a substantially U-shaped vertical cross section in the left-right direction, is located on the front side of the opening 21, and is chamfered in an R shape over the entire left-right direction. And a second corner portion 23 that is located on the rear side of the opening portion 21 and is chamfered in an R shape.
Each groove 20 is provided with two clearance portions 24 that are wider than the groove width in the front-rear direction and spaced in the left-right direction.
As shown in FIG. 5, the escape portion 24 is formed as a hole portion that extends in a tapered shape from the groove bottom portion 25 toward the opening portion 21 side.

As shown in FIG. 5, an insert wire 26 having a substantially circular cross section that is long in the left-right direction is embedded in the cushion pad 10 and below each groove 20.
The insert wire 26 is formed of a known metal material or hard resin material, and is connected and fixed to the suspension member 32 via a C ring 33 shown in FIG.

Further, as shown in FIG. 2, the upper surface of the cushion pad 10 is the center in the left-right direction of the cushion pad 10, near both sides in the front-rear direction of each groove 20, and both end portions in the front-rear direction of the seat heater 40. A recess 27 is provided on the surface.
The concave portion 27 is a positioning portion for placing the seat heater 40 on the cushion pad 10, and a plurality of the concave portions 27 are formed as grooves recessed in a T shape.
Of the T-shaped mark of the concave portion 27 of the present embodiment, the width extending in the left-right direction is 2 mm, and the width extending in the left-right direction is 2 mm. Is desirable. Further, it is desirable that the recess 27 is formed to have a depth of 2 mm.

The skin 30 is made of a known nylon material having elasticity, and is formed in a shape capable of covering the cushion pad 10 from above.
The epidermis 30 includes the epidermis 30a, the epidermis 30b, and the epidermis 30c shown in FIG. 1 at positions corresponding to the upper surfaces of the front pad 10a, the center pad 10b, and the rear pad 10c shown in FIG. .
The skin 30a and the skin 30b are sewn and connected at a position corresponding to the groove 20 provided between the skin 30a and the skin 30b in the front-rear direction. Similarly, the skin 30b and the skin 30c are also connected at a position corresponding to the groove 20 provided between the skin 30b and the skin 30c.

As shown in FIG. 5, a pull-in cloth 31 for pulling the skin 30 into the groove 20 is attached to the skin 30 at a position above the groove 20 and where the skin 30 b and the skin 30 c are sewn.
The pull-in cloth 31 is made of the same nylon material as the skin 30, and is sewn on the skin 30b so as to face the groove 20 in the left-right direction as a whole, and extends toward the groove bottom 25.
As shown in FIG. 7, a plurality of suspension members 32 are attached to the end of the pull-in cloth 31 on the groove bottom portion 25 side at intervals in the left-right direction.
The suspension member 32 has a substantially rectangular cross section formed of a known hard resin material.
The skin 30 is fixed to the cushion pad 10 by each hanging member 32 being hooked to the insert wire 26 via a C-ring 33 having a substantially C-shaped cross section.

The seat heater 40 is a planar heating element that warms the seat cushion 1, and as shown in FIG. 2, a planar substrate 41 made of a polyester cloth material or the like, and a heater wire that is bonded and fixed to the substrate 41. 42 mainly.
Note that the seat heater 40 may be formed by fixing the heater wire 42 and a detection wire (not shown) for detecting that an occupant is seated on the base material 41. If comprised in this way, a passenger | crew's seating can be detected correctly and the seat cushion 1 can be warmed. Further, the positional relationship between the heater wire 42 and the detection wire can be freely arranged on the seat heater 40.

The base material 41 has a substantially rectangular shape formed of a stretchable cloth material. As shown in FIG. 2, the base material 41 has a substantially rectangular shape placed on the upper surfaces of the front pad 10a, the center pad 10b, and the rear pad 10c. The front planar body 41a, the central planar body 41b, the rear planar body 41c, and the front planar body 41a, the central planar body 41b, and the rear planar body 41c are connected to each other and inserted into the groove 20 for mounting. And a substantially rectangular connecting plane body 41d.
The rear of the front planar body 41a and the front of the central planar body 41b are connected via two connecting planar bodies 41d that are spaced apart in the left-right direction. Similarly, the rear of the central planar body 41b and the front of the rear planar body 41c are connected via two connecting planar bodies 41d.

The front planar body 41a, the central planar body 41b, and the rear planar body 41c are formed with a notch 47 that is the center in the left-right direction and is cut out in a V shape at the front end and the rear end. ing.
Each notch 47 is a positioning part for placing the seat heater 40 on the cushion pad 10. When the seat heater 40 is correctly placed on the cushion pad 10, the V-shaped mark of each notch 47 and the T-shaped mark of each recess 27 are arranged to be aligned.

Moreover, the positioning part for mounting the seat heater 40 on the cushion pad 10 is not limited to this, and can be changed.
As another embodiment, convex portions (not shown) may be provided on the upper surface of the cushion pad 10 in the center in the left-right direction of the cushion pad 10 and in the vicinity of both sides in the front-rear direction of each groove 20.
A plurality of protrusions are formed as protrusions protruding in a T-shape, and the T-shaped mark of each protrusion and the V-shaped mark of each notch 47 are preferably arranged so as to be aligned.
By being configured in this way, the T-shaped mark of each convex portion on the upper surface of the cushion pad 10 and the V-shaped mark of each notch portion 47 of the seat heater 40 are combined and contacted with each other, The positioning accuracy is improved.

The heater wire 42 is bonded and fixed on the base material 41. As shown in FIG. 2, the two heater wires 42 meander from the rear of the seat cushion 1 toward the front in a substantially parallel manner. It is connected with.
Note that the heater wire 42 of the present embodiment meanders substantially parallel to the front-rear direction and is fixed on the substrate 41. Without being limited thereto, the arrangement of the heater wires 42 may be changed as appropriate.
Further, although the heater wire 42 is fixed on the base material 41 with an adhesive, the heater wire 42 may be fixed so as to be folded into the base material 41.

As shown in FIG. 2, the heater wire 42 includes a front heater wire 42 a placed on the front planar body 41 a of the base material 41, a central heater wire 42 b placed on the central planar body 41 b, and The rear heater wire 42c placed on the rear planar body 41c and the connecting planar body 41d are placed on the front heater wire 42a, the central heater wire 42b, and the rear heater wire 42c, and the groove 20 It is comprised from the groove part heater wire 43 inserted and mounted in the inside.
Behind the heater wire 42, a thermostat 48 for detecting the temperature of the seat heater 40, a controller (not shown) for controlling the temperature of the seat heater 40, and a connector (not shown) connected to the electric wire on the vehicle body side. Etc. are attached.

As shown in FIGS. 4A and 4B, the groove heater wire 43 is inclined to the left and right outer sides (the outer end side in the left and right direction of the seat cushion 1) with respect to the front-rear direction toward the opening 21 of the groove 20. A heater wire that extends and further extends from the opening 21 toward the groove bottom 25, and extends from the front side to the groove bottom 25 beyond the first corner 22, and the rear The rear groove heater wire 45 extends from the side beyond the second corner portion 23 toward the groove bottom portion 25.
The relationship between the front groove heater wire 44 and the rear groove heater wire 45 corresponds to the relationship between one end and the other end of the claims.

As shown in FIG. 4A, the front groove heater wire 44 and the rear groove heater wire 45 extend toward the opening 21, and the left and right outer sides (the left and right sides of the seat cushion 1) with respect to the depth direction of the groove 20. The outer ends of the grooves extend so as to incline, and further extend on the groove bottom 25 and are connected to each other at substantially the center of the groove bottom 25 in the front-rear width direction.
In other words, the groove heater wire 43 extends from the front side to the groove bottom portion 25 beyond the first corner portion 22 toward the groove bottom portion 25 on the left and right outer sides (the outer end portion side in the left-right direction of the seat cushion 1). Extending from the groove bottom 25 toward the opening 21 toward the opening 21 from the groove bottom 25 toward the opening 21. It extends so as to incline to the left and right inside (the center side in the left-right direction of the seat cushion 1), and extends rearward beyond the second corner 23.
As shown in FIG. 4B, the groove heater wire 43 includes a single bent portion 46 that is bent in the left-right direction at the approximate center of the groove bottom portion 25, and a substantially central plane in the width direction of the groove 20 that passes through the bent portion 46. Is symmetrical with respect to the surface.

  Therefore, when the cushion pad 10 is deformed in a direction in which the groove 20 is compressed with respect to a load applied by the seating of the occupant, the groove heater wire 43 has a shape that extends from the opening 21 in the depth direction of the groove 20. The groove heater wire 43 is compressed by the first corner portion 22 and the second corner portion 23 of the opening 21 when viewed from the front-rear direction in the shape of the shape extending in the left and right directions with respect to the depth direction. Since the cross-sectional area of the sandwiched portion can be increased, deformation of the groove heater wire 43 can be suppressed.

The groove heater wire 43 of the present embodiment extends from the opening 21 so as to incline to the left and right with respect to the depth direction of the groove 20, but is not limited to this and extends in the depth direction of the groove 20. On the other hand, you may extend so that it may incline in the left-right inner side.
Further, the groove heater wire 43 includes one bent portion 46 that is bent substantially at the center of the groove bottom portion 25, but is not limited thereto, and may have a shape including a plurality of bent portions 46. .

As shown in FIG. 4B, an S spring 54 made of a wavy linear member is provided below the groove heater wire 43 and further below the cushion pad 10. It is wrapped with the cushion pad 10.
The S spring 54 is a component of a seat cushion frame (not shown), is an elastic member that supports the cushion pad 10 from below, and is wider than the groove heater wire 43 in the left-right direction. A plurality of S springs 54 are arranged so as to meander in a substantially parallel manner in the front-rear direction at a predetermined interval in the left-right direction.
The seat cushion frame is composed of a substantially rectangular frame body, a pair of side frames (not shown) disposed at both left and right ends, and a plate-like frame (not shown) installed on the front upper surface of each side frame. Main frame, a member pipe (not shown) as a connecting member installed near the rear side end of each side frame, and an S spring 54 for connecting the pan frame and the member pipe in the front-rear direction. ing.

  As described above, since the S spring 54 is provided below the groove heater wire 43 and further below the cushion pad 10, the cushion pad 10 is deformed in a compressing direction due to a load applied when the occupant is seated. Furthermore, the S spring 54 can be supported as an elastic member so as to suppress deformation of the cushion pad 10 and the seat heater 40, and deformation of the groove heater wire 43 can be suppressed.

As shown in FIG. 5, the groove 20 includes a first corner portion 22 and a second corner portion 23 chamfered in an R shape over the entire left and right direction of the groove 20.
Therefore, when the cushion pad 10 is deformed in a direction in which the groove 20 is compressed with respect to a load or the like applied by the occupant's seating, the groove heater wire 43 has the first corner portion 22 and the second corner portion 23 as viewed from the front-rear direction. Since the cross-sectional area of the portion compressed and clamped can be increased by this, deformation of the groove heater wire 43 can be suppressed.
About the groove | channel 20 of this embodiment, it forms so that the groove width of the front-back width direction may be 10-15 mm, and it forms so that the magnitude | size of a chamfer of R shape may be 10-650 mm with respect to this groove width. desirable.

Moreover, the groove | channel 20 is each provided with the escape part 24 in the part through which the two groove part heater wires 43 pass in the left-right direction among the grooves 20, as shown in FIG.
Therefore, when the cushion pad 10 is deformed in the direction in which the groove 20 is compressed, the deformation amount of the cushion pad can be particularly suppressed in the portion of the groove 20 where the two groove heater wires 43 pass. Can be further suppressed.
About the groove | channel 20 of this embodiment, it is desirable to form so that the groove width of the escape part 24 of the front-back width direction may be 10-25 mm.

As shown in FIG. 5, the escape portion 24 of the present embodiment is formed as a hole that extends in a tapered shape from the groove bottom 25 toward the opening 21, but is not limited thereto, and can be changed. Is possible.
As another embodiment, as shown in FIG. 8, the relief portions 28 may be provided as concave portions having a substantially rectangular shape formed shallower than the depth of the groove 20 on both sides in the front-rear direction of the groove 20.
The escape portion 28 is provided in a portion of the groove 20 through which the two groove heater wires 43 pass in the left-right direction.
By being configured in this manner, when the cushion pad 10 is deformed in the direction in which the groove 20 is compressed, the deformation amount of the cushion pad 10 can be particularly suppressed in a portion where the two groove heater wires 43 pass. 43 deformation can be further suppressed.

  Next, a structure in which the seat heater 40 is fixed to the upper surface of the cushion pad 10 and the cushion pad 10 and the seat heater 40 are covered with the skin 30 will be described with reference to FIGS. 5 and 7.

In each groove 20 of the cushion pad 10, a portion of the seat heater 40 including the groove heater wire 43 is inserted and attached.
A pull-in cloth 31 sewn on the end of the skin 30c is provided above each groove 20 over the entire left and right direction.
In each groove 20, the hanging members 32 attached to the draw-in cloth 31 are provided in three portions at portions other than the portion through which the groove heater wire 43 passes in the left-right direction.
Note that the number of the suspension members 32 is not limited to three, and a plurality of suspension members 32 may be provided.

In the skin 30, the suspension members 32 connected to the skin 30 c are hooked with the insert wires 26 elongated in the left-right direction embedded in the cushion pad 10 via the C ring 33. Fixed to.
Moreover, since the suspension member 32 is provided above the portion of the seat heater 40 inserted into each groove 20 that does not include the groove heater wire 43, the seat heater 40 is also supported by the entire skin 30. In particular, the cushion pad 10 is fixed to the upper surface of the cushion pad 10 by being supported by the suspension member 32.

  At this time, the suspension member 32 provided in the groove 20 has a width in the front-rear direction of the groove 20 when the cushion pad 10 is deformed in a direction in which the groove 20 compresses the load applied by the seating of the occupant. It can be used as a restricting member that restricts deformation to be narrowed.

In the present embodiment, the suspending member 32 provided in the groove 20 is used as a restricting member, but the present invention is not limited to this and can be changed.
As another embodiment, a regulating member 49 made of a hard resin material in addition to the hanging member 32 is attached to the pulling cloth 31 in a portion other than the portion where the groove heater wire 43 passes in the left-right direction in each groove 20. May be provided.
By doing in this way, since the suspension member 32 and the regulating member 49 can be simultaneously attached to the pulling cloth 31 in each groove 20, the attachment work can be improved.

  As shown in FIG. 5, the insert wire 26 is embedded in the cushion pad 10 so as to be disposed just below the center of the groove 20 in the front-rear width direction. Therefore, when the cushion pad 10 is deformed in a compressing direction by a load applied when the occupant is seated, the insert wire 26 can be supported so as to suppress deformation of the cushion pad 10 and the seat heater 40, and the groove heater wire 43 deformation can be suppressed.

Moreover, in this embodiment, although the insert wire 26 is arrange | positioned just under the substantially center of the front-back width direction of the groove | channel 20, it can change without limiting to this.
As another embodiment, as shown in FIG. 6, the insert wire 26 is embedded in the cushion pad 10 so as to be disposed slightly forward in the front-rear direction rather than directly below the center of the groove 20 in the front-rear width direction. May be.
With this configuration, when the cushion pad 10 is deformed in a direction in which the cushion pad 10 is compressed by a load applied when the occupant is seated, the groove heater wire 43 has a compressive force due to the deformation of the cushion pad 10 and the insert wire 26. Since it can be made difficult to receive force by being sandwiched between the supporting force that supports the deformation of the cushion pad 10, the deformation of the groove heater wire 43 can be suppressed.

  Next, as another embodiment, a structure in which the seat heater 40 is fixed to the upper surface of the cushion pad 10 and the cushion pad 10 and the seat heater 40 are covered with the skin 30 will be described with reference to FIGS. 8 and 9.

In the groove 20 of the cushion pad 10, a portion of the seat heater 40 including the groove heater wire 43 is inserted and attached.
Above each groove 20, a retractable cloth 50 sewed on the end portion of the skin 30 b and a hanging wire 51 having a substantially circular cross section attached to the inside of the retractable cloth 50 are provided over the entire left and right direction. .

Moreover, the buffer member 52 is provided in the upper surface of the part in which each groove | channel 20 or the seat heater 40 was inserted over the whole left-right direction.
The buffer member 52 is made of the same foamed urethane as the cushion pad 10 and has a substantially rectangular cross section.
The buffer member 52 may be provided only on the upper surface of the portion of the groove 20 where the seat heater 40 is inserted in the left-right direction.

  In this way, the cushion member 52 is fitted into the upper surface of the groove 20 where the seat heater 40 is inserted into the groove 20, thereby covering the cushion pad 10 and the seat heater 40 with the epidermis 30 fixed. The seat heater 40 can be fixed to the cushion pad 10 even during the time until.

The draw-in cloth 50 with the hanging wire 51 attached inside is placed on the upper surface of the buffer member 52.
As shown in FIG. 9, the skin 30 is hooked to the insert wire 26 embedded in the cushion pad 10 via the C ring 53 by the suspension wire 51 connected to the skin 30 b, thereby the cushion pad 10. Fixed to.

Next, the load applied to the cushion pad by the occupant's seating varies in the front-rear direction depending on the seating position of the occupant and the configuration of the seat cushion frame.
As shown in FIG. 2, the cushion pad 10 of the present embodiment is composed of a front pad 10a, a center pad 10b, and a rear pad 10c. The center pad 10b receives the largest load due to the seating of the occupant, Next, the front pad 10a receives a load, and the rear pad 10c receives the smallest load.

Considering the load received by the cushion pad 10 when the occupant is seated, the deformation amount of the center pad 10b is the largest, the deformation amount of the front pad 10a is the largest, and the deformation amount of the rear pad 10c is the largest. small.
Therefore, among the front pad 10a, the center pad 10b, and the rear pad 10c, at least the corners of the groove 20 on the pad side with a large deformation amount are given chamfers having at least an R shape, and the relief portions 24 shown in FIG. It is desirable.
The relationship between the corner on the pad side with a large deformation amount and the corner on the pad side with a small deformation amount corresponds to the relationship between the first corner portion and the second corner portion in the claims.
By doing so, on the side of the pad having a large deformation amount, the cross-sectional area received by the groove heater wire 43 with respect to the compressive force applied to the groove 20 by the R-shaped chamfering can be increased, and the cushion pad 10 is The amount of deformation can be suppressed, and the deformation of the groove heater wire 43 provided in the groove 20 can be further suppressed.

Further, in the portion of the groove 20 where the groove portion heater wire 43 extends into the groove 20, the groove portion heater wire 43 extends from the corner portion toward the groove bottom portion 25 with respect to the pad side having a large deformation amount. It is desirable to extend so as to incline left and right with respect to the depth direction of 20.
By doing in this way, the cross-sectional area which the groove part heater wire 43 receives with respect to the compression force added to the groove | channel 20 can be enlarged in the pad side with a large deformation amount, and the deformation | transformation of the groove part heater wire | line 43 provided in the groove | channel 20 is further increased. Can be suppressed.

Further, in the present embodiment, the groove heater wire 43 includes a bent portion 46 that is bent at the approximate center in the front-rear width direction of the groove bottom 25, but the groove bottom 25 is not limited to this, You may change suitably arrangement | positioning of the bending part 46. FIG.
For example, in consideration of the load received by the cushion pad 10 when the occupant is seated, the bent portion 46 may be disposed closer to the pad side where the amount of deformation is smaller than the approximate center of the groove bottom portion 25 in the front-rear direction.
Further, the deformation width by which the cushion pad 10 deforms the groove 20 in the compression direction is calculated, and in the groove 20 after the pad deformation, the bent portion 46 is arranged at the center position of the groove bottom portion 25 offset to the pad side where the deformation width is small. You may do it.
By doing in this way, the deformation amount of the cushion pad can be suppressed against the compressive force applied to the groove 20 on the pad side where the deformation amount is large, and the deformation of the groove heater wire 43 provided in the groove 20 is further reduced. Can be suppressed.

Next, the cushion pad of the seat cushion usually changes the softness of the cushion pad in the front-rear direction in consideration of comfort when the occupant is seated.
In the case of the cushion pad 10 of the present embodiment, the front pad 10a is set to be softer than the center pad 10b and the rear pad 10c.

Considering the softness of the cushion pad 10, the deformation amount of the front pad 10a is large and the deformation amount of the center pad 10b and the rear pad 10c is small in the deformation amount of the cushion pad 10.
Therefore, among the front pad 10a, the center pad 10b, and the rear pad 10c, at least the corners of the groove 20 on the pad side with a large deformation amount are given chamfers having at least an R shape, and the relief portion 24 shown in FIG. 4A is provided. It is desirable.
By doing so, on the side of the pad having a large deformation amount, the cross-sectional area received by the groove heater wire 43 with respect to the compressive force applied to the groove 20 by the R-shaped chamfering can be increased, and the cushion pad 10 is The amount of deformation can be suppressed, and the deformation of the groove heater wire 43 provided in the groove 20 can be further suppressed.

Further, in the portion of the groove 20 where the groove portion heater wire 43 extends into the groove 20, the groove portion heater wire 43 extends from the corner portion toward the groove bottom portion 25 with respect to the pad side having a large deformation amount. It is desirable to extend so as to incline left and right with respect to the depth direction of 20.
By doing in this way, the cross-sectional area which the groove part heater wire 43 receives with respect to the compression force added to the groove | channel 20 can be enlarged in the pad side with a large deformation amount, and the deformation | transformation of the groove part heater wire | line 43 provided in the groove | channel 20 is further increased. Can be suppressed.

  Next, a configuration in which the seat heater 80 is fixed to the upper surface of the cushion pad 11 in the seat back 2 and the cushion pad 11 and the seat heater 80 are covered with the skin 70 will be described. In addition, the content which overlaps with the content described by the seat cushion 1 is abbreviate | omitted.

  As shown in FIG. 3, the cushion pad 11 includes an upper pad 11 a located on the upper side, a center pad 11 b located on the center side, and a lower pad 11 c located on the lower side, among the cushion pads 11. ing. A groove 60 that is long in the left-right direction is formed on the upper surface of the cushion pad 11.

  Like the seat cushion 1, an S spring (not shown) made of a wavy linear member is provided behind the groove 60 and further behind the cushion pad 11, and the S spring is a cushion in the front-rear direction. It is wrapped with the pad 11.

Next, the load applied to the cushion pad by the seating of the occupant varies in the vertical direction.
In the case of the cushion pad 11 of the present embodiment, the lower pad 11c receives the largest load by the seating of the occupant, the central pad 11b receives the load, and the upper pad 11a receives the smallest load.

Considering the load received by the cushion pad 10 when the occupant is seated, the deformation amount of the lower pad 11c is the largest, the deformation amount of the central pad 11b is the largest, and the deformation amount of the upper pad 11a is the largest. small.
Therefore, among the upper pad 11a, the center pad 11b, and the lower pad 11c, at least an R-shaped chamfer is imparted to the corner of the opening of the groove 60 on the pad side where the amount of deformation is large, and a relief portion is provided. desirable.

  Further, in the portion of the groove 60 where the heater wire fixed to the seat heater 80 extends into the groove 60, the groove heater wire extends beyond the corner portion to the groove bottom portion at least with respect to the pad side having a large deformation amount. It is desirable to extend so as to incline to the left and right outside with respect to the depth direction of the groove 60.

Next, the cushion pad of the seat back usually changes the softness of the cushion pad 11 in the vertical direction in consideration of the comfort when the occupant is seated.
Among the cushion pads 11 of the present embodiment, the upper pad 11a, the center pad 11b, and the lower pad 11c are all set to the same softness, or the lower pad 11c is set to be softer than the center pad 11b and the upper pad 11a. To be.

Considering the softness of the cushion pad 11, the deformation amount of the cushion pad 11 is the same, or the deformation amount of the lower pad 11c is large, and the deformation amount of the center pad 11b and the upper pad 11a is small.
Therefore, among the upper pad 11a, the center pad 11b, and the lower pad 11c, at least an R-shaped chamfer is imparted to the corner of the opening of the groove 60 on the pad side where the amount of deformation is large, and a relief portion is provided. desirable.

  Further, in the portion of the groove 60 where the heater wire fixed to the seat heater 80 extends into the groove 60, the groove heater wire 43 extends beyond the corner portion at least toward the pad side where the deformation amount is large. It is desirable to extend toward the bottom 25 so as to incline left and right with respect to the depth direction of the groove 60.

  In each of the above-described embodiments, the front seat of the automobile has been described as a specific example. However, the present invention is not limited to this and can be applied to a middle seat and a rear seat of the automobile.

S vehicle seat 1 seat cushion 2 seat back 3 headrest 10, 11 cushion pad 10a front pad 10b center pad 10c rear pad 11a upper pad 11b center pad 11c lower pad 20 groove 21 opening 22 first corner 23 second corner 24 Escape part 25 Groove bottom part 26 Insert wire 27 Recess 30 Skin 30a Skin 30b Skin 30c Skin 31 Pull-in cloth 32 Lifting member 33 C ring 40 Seat heater 41 Base material 41a, 41b, 41c Planar body 41d Connecting planar body 42 Heater Wire 42a Front heater wire 42b Center heater wire 42c Rear heater wire 43 Groove heater wire 44 Front groove heater wire 45 Rear groove heater wire 46 Bending portion 47 Notch portion 48 Thermostat 49 Restricting member 50 Pull-in cloth 51 Hanging wire 2 cushioning member 53 C-ring 54 S springs 60 groove 70 skin 80 seat heater 100 seat cushion 101 cushion pad 101a groove 102 seat heater 102a heater wire 102b substrate 103 members 105 insert wire hanging skin 103a pull the fabric 104

Claims (8)

A vehicle seat provided with a seat heater between a cushion pad and an outer skin covering the cushion pad,
A groove is provided on the surface of the cushion pad,
The seat heater is provided in the groove by connecting the first heater wire and the first heater wire to the first heater wire and the second heater wire arranged on opposite sides of the groove. A groove heater wire,
The groove includes a first corner portion located on the side where the first heater wire is disposed, and a second portion located on the side where the second heater wire is disposed, at both ends of the opening of the groove. With corners,
The groove heater wire has one end extending toward the bottom of the groove beyond the first corner and the other end extending toward the bottom of the groove beyond the second corner. And a bent portion bent at the bottom of the groove,
Of the one end and the other end of the groove heater wire, at least one extending direction is inclined with respect to the depth direction of the groove ,
The cushion pad and the seat heater are provided with positioning portions for disposing the seat heater on the cushion pad,
The positioning portion includes a pad side positioning portion provided at the center in the left-right direction on the surface of the cushion pad and a seat heater side positioning portion provided at the center in the left-right direction of the seat heater. A vehicular seat characterized in that when the seat heater is arranged, the pad side positioning portion and the seat heater side positioning portion are arranged to be combined . The pad side positioning portion is a recess provided on the surface of the cushion pad ,
The seat heater side positioning portion, a vehicle seat according to claim 1, wherein the sheet is a notch formed by cutting a part of the heater. The pad side positioning portion is a convex portion provided on the surface of the cushion pad ,
The seat heater side positioning part is a notch part in which a part of the seat heater is notched ,
When disposing the seat heater to said cushion pad, a vehicle seat according to claim 1, wherein the protrusion and the notch is characterized by being configured to abut. A vehicle seat provided with a seat heater between a cushion pad and an outer skin covering the cushion pad,
A groove is provided on the surface of the cushion pad,
The seat heater is provided in the groove by connecting the first heater wire and the first heater wire to the first heater wire and the second heater wire arranged on opposite sides of the groove. A groove heater wire,
The groove includes a first corner portion located on the side where the first heater wire is disposed, and a second portion located on the side where the second heater wire is disposed, at both ends of the opening of the groove. With corners,
The groove heater wire has one end extending toward the bottom of the groove beyond the first corner and the other end extending toward the bottom of the groove beyond the second corner. And a bent portion bent at the bottom of the groove,
Of the one end and the other end of the groove heater wire, at least one extending direction is inclined with respect to the depth direction of the groove,
The heater wire including the first heater wire, the second heater wire, and the groove heater wire extends so as to intersect the groove,
The groove includes a first region in which the groove heater wire extends, and a second region different from the first region,
Wherein the first region, car dual seat it, characterized in that length along the extending direction of the heater wire in the opening is provided with a relief portion which is longer than said second region. The vehicle seat according to claim 4 , wherein the escape portion extends in a tapered shape from the bottom of the groove toward the opening. The escape portion includes recesses arranged on opposite sides of the groove,
The vehicle seat according to claim 4 , wherein the recess is recessed toward the bottom of the groove and is shallower than the depth of the groove. A vehicle seat provided with a seat heater between a cushion pad and an outer skin covering the cushion pad,
A groove is provided on the surface of the cushion pad,
The seat heater is provided in the groove by connecting the first heater wire and the first heater wire to the first heater wire and the second heater wire arranged on opposite sides of the groove. A groove heater wire,
The groove includes a first corner portion located on the side where the first heater wire is disposed, and a second portion located on the side where the second heater wire is disposed, at both ends of the opening of the groove. With corners,
The groove heater wire has one end extending toward the bottom of the groove beyond the first corner and the other end extending toward the bottom of the groove beyond the second corner. And a bent portion bent at the bottom of the groove,
Of the one end and the other end of the groove heater wire, at least one extending direction is inclined with respect to the depth direction of the groove,
The heater wire including the first heater wire, the second heater wire, and the groove heater wire extends so as to intersect the groove,
Said groove, when Oite a region different from the region where the groove heater wire in the extending direction of the groove is extended, said cushion pad with respect to the load applied to the cushion pad was deformed in a direction to compress said groove car dual sheet regulating member for regulating a deformation to be to narrow the longitudinal direction of the width of the groove, characterized by comprising inside the groove to. A hanging member inserted into the groove is attached to the skin,
The regulating member is a vehicle seat according to claim 7 is attached to the skin together with the hanging member, wherein that you have attached to the inside of the groove.

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