JP2012197032A - Seat for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of part items of a seat pad and man-hours for assembling the seat pad when setting an air conditioning seat including a ventilation means in a surface direction in a support panel, and to reduce the influence to the cushioning performance of the seat.SOLUTION: A seat 10 for a vehicle is provided with an air conditioning unit expelling air outward of a seat surface of the seat 10 for a vehicle or sucking air inward of the seat surface, a seat pad 42, and a support panel 28. On a supporting surface 28a of the support panel 28, a ventilation groove 36 is formed which is recessed on a side opposite to the supporting direction of the seat pad 42 when seen in a cross sectional view, and in the seat pad 42, a ventilation hole 42c is formed which is connected to a surface 42a side from a back 42b side corresponding to a position of the ventilation groove 36 formed in the supporting surface 28a of the support panel 28, so that the air conditioning unit 60 is coupled to the ventilation groove 36 of the support panel 28 to circulate air to the ventilation hole 42c in the seat pad 42.

Description

  The present invention relates to a vehicle seat.

  Conventionally, a vehicular seat like patent documents 1 is known in view of controlling the discomfort at the time of seating of a seat in summer and winter. The specific configuration of the vehicle seat is as follows. As shown in FIGS. 8 to 11, the vehicle seat 101 of Patent Document 1 includes a seat cushion 102 and a seat back 103. The vehicle seat 101 includes air conditioning units 123 and 133 that blow out air toward the outside of the surface of the vehicle seat 101. The seat pads 120, 130 are first pad members 104, 106 constituting the front side, and second pad members 105, 107 fitted into recesses 140, 160 formed on the back surface of the first pad members 104, 106. And a two-layer structure. The second pad members 105 and 107 are formed with introduction holes 150 and 170 penetrating from the back side to the front side for introducing air. The first pad members 104 and 106 are provided with ventilation grooves 141 and 161 formed on the bottom surfaces of the recesses 140 and 160 in order to blow air introduced from the introduction holes 150 and 170 to the front side. A plurality of blowout holes 142 and 162 penetrating the first pad members 104 and 106 from the 161 to the front side are formed.

JP 2004-8334 A

  Like the vehicle seat 101 described above, since the seat pads 120 and 130 have a two-layer structure, there is a concern that the number of parts increases and the assembly man-hour increases. In addition, the seat pads 120 and 130 may have complicated shapes due to the formation of the ventilation grooves 141 and 161 and the blowout holes 142 and 162, leading to an increase in manufacturing cost. Further, in the seat pads 120 and 130, ventilation grooves 141 and 161 are stretched vertically and horizontally in order to allow air to uniformly flow through the blowout holes 142 and 162, respectively. The ventilation grooves 141 and 161 have a cross-sectional area that does not block air flow even when the seated person is seated. Therefore, it is necessary to design the ventilation grooves 141 and 161 in consideration of the concern that affects the cushion performance that the vehicle seat 101 originally has.

  Therefore, as a result of intensive studies, the present inventor has focused on the support panel that supports the seat pad formed on the vehicle seat from the back side. That is, if it can be provided on the support panel side instead of the one that forms the ventilation groove on the seat pad side, the number of parts and the number of assembly steps can be reduced. Further, attention was paid to the fact that the influence of the cushion performance of the seat can be reduced.

  Thus, the present invention was devised in view of these points, and the problem to be solved by the present invention is to provide an air-conditioning sheet by providing a support panel with ventilation means in the surface direction. The purpose is to reduce the number of parts and the number of assembly steps of the seat pad when setting, and to reduce the influence on the cushion performance of the seat.

In order to solve the above problems, the vehicle seat of the present invention takes the following means.
First, a first aspect of the invention is a vehicle seat including an air conditioning unit that blows air toward the outside of the seat surface of the vehicle seat or sucks air toward the inside of the seat surface of the vehicle seat. A seat pad for supporting a seated person and a support panel for supporting the seat pad from the back side, and the support surface of the support panel is opposite to the support direction of the seat pad as seen in a sectional view. A vent groove recessed on the side is formed, and the seat pad is formed with a vent hole connected from the back side to the front side corresponding to the position of the vent groove formed on the support surface of the support panel, The air conditioning unit is connected to a ventilation groove of the support panel so that air flows through the ventilation holes of the seat pad.

  According to the first aspect of the invention, the ventilation groove is formed on the support surface of the support panel that supports the seat pad from the back surface side. Therefore, it is possible to reduce the number of parts of the seat pad and the number of assembling steps when setting the air-conditioning sheet. Further, it is not necessary to provide a ventilation groove in the seat pad, and the shape of the seat pad is only the ventilation hole. Therefore, it is not necessary to make the seat pad in a complicated shape, so that the manufacturing cost of the seat pad can be suppressed. In addition, since the seat pad has no ventilation groove, there is no restriction that the seat pad is designed in consideration of the effect of the cushion performance associated with the ventilation groove. Further, the influence on the cushion performance of the seat can be reduced.

  Next, a second invention is characterized in that, in the first invention, the support panel is formed so that a width of the ventilation groove is larger than an opening width of the ventilation hole of the seat pad as viewed in a cross-sectional view. And

  According to the second aspect, the width of the ventilation groove of the support panel is formed larger than the opening width of the ventilation hole of the seat pad. As a result, when the seated person sits on the vehicle seat, even if the vent hole of the seat pad is displaced from the vent groove of the support panel, the vent hole can be prevented from being blocked. The air flow in the pores is not hindered.

  Next, a third invention is characterized in that, in the first invention or the second invention, the air conditioning unit is fixed to the support panel.

  According to the third invention, the air conditioning unit is fixed to the support panel. The support panel is made of a rigid material to support the seapad. Therefore, the air conditioning unit can be mounted on the vehicle seat without requiring a new member.

  In the present invention, by taking the measures of the above-mentioned inventions, the support panel is provided with ventilation means in the surface direction, thereby reducing the number of parts of the seat pad and the assembling man-hours when setting the air-conditioning sheet. The impact on the cushion performance of the seat can be reduced.

It is a perspective view of the frame structure centering on the seat cushion of the vehicular seat concerning this embodiment. It is the II-II sectional view taken on the line of FIG. It is a perspective view of the air-conditioning unit with which the vehicle seat concerning this embodiment is equipped. It is the elements on larger scale which showed the attachment state of the air-conditioning unit with which the vehicle seat which concerns on this embodiment is equipped. It is the fragmentary sectional view which showed the attachment state of the air conditioning unit with which the vehicle seat which concerns on this embodiment is equipped. It is the VI-VI sectional view taken on the line of FIG. It is the VII-VII sectional view taken on the line of FIG. It is a whole perspective view of the conventional vehicle seat. It is the IX-IX sectional view taken on the line of FIG. It is the XX sectional view taken on the line of FIG. It is the perspective view seen from the back side of the 1st pad member and the 2nd pad member of the conventional vehicle seat.

  Below, embodiment of this invention is described using FIGS. Note that the directions indicated by the arrows in each figure are directions that coincide with the front, rear, upper, lower, inner, and outer sides of the vehicle to which the vehicle seat 10 is applied, respectively. In the present embodiment, a configuration in which a seat cushion is provided with an air conditioning unit will be described as an example of a vehicle seat including the air conditioning unit. In the description of the present embodiment, after describing the structural configuration of the vehicle seat, the configuration of the air conditioning unit will be described.

<Vehicle seat structure>
As illustrated in FIG. 1, the vehicle seat 10 according to the present embodiment is installed in a vehicle such as an automobile. The vehicle seat 10 is applied to any of a driver seat, a passenger seat, a rear seat arranged in the second row, and the third row. In the present embodiment, a driver's seat will be described as an example. The vehicle seat 10 includes a seat back 12 (partially omitted), a seat cushion 16, and a headrest (not shown). The seat back 12 (partially omitted) is configured as a backrest that supports the back of the seated person. The seat cushion 16 is configured as a seating surface that supports a seated person's buttocks. The headrest (not shown) is configured to support the back of the seated person. In addition, since a well-known thing applies a headrest, illustration and description are abbreviate | omitted.

  As shown in FIG. 1, the seat back 12 is mainly composed of a seat back frame 14, a seat pad (not shown), and a skin (not shown). The seat pad (not shown) forms the outer shape of the seat surface (not shown) and elastically supports the seated person. The skin is coated on the outer surface of a seat pad (not shown). In addition, illustration and description are abbreviate | omitted from the structure of a seat pad, an outer skin, etc. which apply a well-known thing.

  The seat back frame 14 is configured as a skeleton of the seat back 12. The seat back frame 14 is formed into a gate shape by appropriately bending a metal plate-like member and a pipe member. The lower end portion of the seat back frame 14 is configured in a frame shape by connecting the reclining shaft 15. Reclining plates 46 are connected by bolts 48 to the left and right sides of a rear end portion of a cushion frame 18 to be described later. The lower end portion of the seat back frame 14 is pivotally connected to the reclining plate 46 via the reclining shaft 15. The seat back 12 (seat back frame 14) is configured to be tilted about the reclining shaft 15 by a known reclining mechanism 50 to adjust its angle. Thereby, the seat back 12 is supported so as to be tiltable with respect to the seat cushion 16. The reclining mechanism 50 applies various known structures, and detailed description thereof is omitted.

  As shown in FIGS. 1 and 2, the seat cushion 16 is mainly configured with a cushion frame 18, a side shield 40, a seat pad 42, and a skin 44 as main components.

  The cushion frame 18 is configured as a skeleton of the seat cushion 16 as shown in FIGS. The cushion frame 18 generally includes left and right side frames 20 and 20, a front frame 22, a rear frame 24, a support frame 26, and a support panel 28. As shown in FIGS. 1 and 2, the cushion frame 18 is roughly formed into a frame shape by left and right side frames 20 and 20, a front frame 22, and a rear frame 24. A support frame 26 and a support frame are supported in the frame shape. A panel 28 is constructed.

  The left and right side frames 20, 20 are members that support the seat cushion 16 from both side surfaces as shown in FIG. The left and right side frames 20, 20 are erected in parallel on a slide rail 70 configured in a front-rear direction on a vehicle floor surface F by bending a plate-shaped member made of a steel plate.

  The front frame 22 and the rear frame 24 are members that connect the left and right side frames 20, 20 as shown in FIG. The front frame 22 and the rear frame 24 are made of metal pipe members. The front frame 22 is connected at the front end portions of the left and right side frames 20 and 20. The rear frame 24 is connected at the rear ends of the left and right side frames 20, 20.

  As shown in FIG. 1, the support frame 26 is a member for supporting a support panel 28 described later together with the front frame 22 and the rear frame 24. The support frame 26 is made of a metal pipe member, and spans the left and right side frames 20, 20 between the front frame 22 and the rear frame 24.

  As shown in FIG. 1, the support panel 28 supports the seat pad 42 that receives the buttocks of the occupant from the back surface 42 b side. The support panel 28 is formed by bending a metal plate member (for example, a steel plate). The support panel 28 is provided with a locking portion 32 and a locking portion 34 at the front end portion and the rear end portion, respectively. The locking portion 32 and the locking portion 34 are configured to be locked from above the front frame 22 and the rear frame 24, respectively.

  A vent groove 36 is formed in the support surface 28a of the support panel 28. The vent groove 36 is recessed on the opposite side to the direction in which the seat pad 42 is supported when viewed in cross section. The ventilation groove 36 includes a plurality of vertical grooves 36a, 36b, 36c extending in the vehicle front-rear direction. In the present embodiment, three longitudinal grooves 36a, 36b, and 36c are configured in parallel. In the middle of the longitudinal grooves 36a, 36b, and 36c in the vehicle front-rear direction, a transverse groove 36d that connects the longitudinal grooves 36a, 36b, and 36c by crossing the longitudinal grooves 36a, 36b, and 36c is formed. As shown in FIG. 7, the width 36f of the ventilation groove 36 of the support panel 28 is formed to be larger than the opening width 42d of the ventilation hole 42c of the seat pad 42, which will be described later when viewed in a cross-sectional view.

  As shown in FIG. 6, the support panel 28 is configured such that the upper side of the support frame 26 and the bottom surface of the lateral groove 36 d of the ventilation groove 36 formed in the support panel 28 are in contact with each other. The support panel 28 is fixed by being welded as a welded portion 30 at a plurality of locations in the region in contact with the support frame 26.

  An opening 36e penetrating the support surface 28a side of the support panel 28 and the opposite back surface 28b side is formed at the rear end of the central vertical groove 36b among the vertical grooves 36a, 36b, 36c. The opening 36e is a part into which a blowout port of a multiblade blower 60 configured as an air conditioning unit described later is inserted. Further, an engagement hole 38 for attaching a multiblade blower 60 described later is formed on the rear side of the opening 36e. The multi-blade fan 60 is attached by engaging the engagement hole 38 with the engaging portion 66 of the multi-blade fan 60. Thereby, the air flowing in from the multiblade blower 60 reaches the entire support panel 28 through the vertical grooves 36a, 36b, 36c, and the horizontal grooves 36d.

  As shown in FIG. 2, the side shield 40 is fitted and fixed to the cushion frame 18 at the side of the seat cushion 16. The side shield 40 is configured to improve the design so that the appearance of the seat cushion 16 can be clearly seen. The side shield 40 is made of a synthetic resin plate-like member, and is sized to cover the side portion of the seat cushion 16 (see FIG. 1).

  As shown in FIG. 1, the seat pad 42 is configured to shape the outer shape of the seat surface and elastically support the seated person. As shown in FIGS. 1 and 2, the seat pad 42 is made of an elastic material such as urethane foam. On the surface 42a of the seat pad 42, an outer shape of the surface 42a used as a seating surface of the seat cushion 16 is formed. The seat pad 42 is placed on the support panel 28 of the cushion frame 18 so as to cover the entire surface of the support panel 28 from above the vehicle. Here, at least one vent hole 42 c is formed in the seat pad 42. In the present embodiment, the seat pad 42 has five vent holes 42c. The vent hole 42c is formed so as to penetrate the back surface 42b side and the front surface 42a side of the seat pad 42. The seat pad 42 is positioned on the back surface 42b side of the seat pad 42 corresponding to the position of the ventilation groove 36 formed on the support surface 28a of the support panel 28 in a state where the seat pad 42 is put on the support panel 28. A vent hole 42c is formed so as to be connected to the surface 42a side of the seat pad 42.

  As shown in FIG. 2, the skin 44 is covered with the surface 42 a of the seat pad 42. The epidermis 44 is composed of natural fibers, synthetic fibers, main skin, and the like. The skin 44 is three-dimensionally sewn so as to be able to follow the outer shape of the seat pad 42, and the surface 42 a side of the seat back 12 follows the outer shape of the seat pad 42 by a well-known hanging structure. It is covered. The skin 44 is configured to be able to ventilate through gaps in the fiber stitches. Further, when a material that is difficult to ventilate, such as a genuine leather, is applied, a configuration may be adopted in which a fine hole is provided at a position corresponding to the vent hole 42c to promote ventilation.

<About air conditioning unit>
The air conditioning unit is configured to blow air toward the outside of the seat surface of the vehicle seat 10 or to suck air toward the inside of the seat surface of the vehicle seat 10 as shown in FIGS. Any of these may be used. In the present embodiment, a configuration in which the air conditioning unit blows air toward the outside of the seat surface of the vehicle seat 10 will be described. As a configuration for blowing out air, the blowing generation means is configured as a blowing type blower. A multi-blade blower 60 (sirocco fan) is selected as the blower blower (air conditioning unit).

As shown in FIGS. 2 to 5, the multiblade blower 60 includes an impeller (not shown) having a large number of small forward blades, a cylindrical portion 62 that surrounds and supports the impeller (not shown), and a cylindrical portion. 62 is a structure in which an air conditioner (not shown) that winds air taken into the interior of the air 62 and guides it to the outlet is combined.
On the outer peripheral surface of the cylindrical portion 62 of the multiblade blower 60, engaging portions 66 extending in the axial direction are formed at a plurality of locations. The engaging portion 66 is integrally formed with an elastic deformation portion 66a and an engaging claw 66b. The elastic deformation portion 66a is a portion that elastically deforms in the radial direction and displaces the engaging claw 66b in the radial direction. The engagement claw 66 b is a part that engages with the engagement hole 38 of the support panel 28 and fixes the multiblade blower 60 to the support panel 28. As for the elastic deformation part 66a, a strip-shaped member extends in the axial direction. An engaging claw 66b is located at the end of the elastic deformation portion 66a. The engaging claw 66b extends radially outward. The multiblade blower 60 is fixed to the back surface 28 b side of the support panel 28 by engaging the engagement claw 66 b with the engagement hole 38 of the support panel 28. The outlet 64 of the multiblade blower 60 is connected to the ventilation groove 36 by being inserted into the opening 36 e of the support panel 28.

  As shown in FIGS. 2 and 3, in the multiblade blower 60, when power is supplied through the wire harness 68, an impeller (not shown) rotates. Air is taken in from the axial direction in the cylinder part 62 with rotation of an impeller (illustration omitted). The air taken into the cylindrical portion 62 is changed in the radial direction by the forward-facing blades of a rotating impeller (not shown), and is conditioned in the cylindrical portion 62 to exit from the outlet 64 (exit). ing. Thereby, the multiblade blower 60 (air conditioning unit) is connected to the ventilation groove 36 of the support panel 28, and the air flows through the ventilation holes 42 c of the seat pad 42.

  Thus, according to the vehicle seat 10 of the present embodiment, the ventilation groove 36 is formed on the support surface 28a of the support panel 28 that supports the seat pad 42 from the back surface 42b side. Therefore, it is possible to reduce the number of parts of the seat pad 42 and the number of assembling steps when setting the air-conditioning sheet. Further, it is not necessary to provide the ventilation groove 36 in the seat pad 42, and the shape of the seat pad 42 is only the ventilation hole 42c. Therefore, the seat pad 42 does not need to have a complicated shape, so that the manufacturing cost of the seat pad 42 can be reduced. Further, since the seat pad 42 does not have the ventilation groove 36, there is no restriction that the seat pad 42 is designed in consideration of the effect of the cushion performance associated with the ventilation groove 36. Further, the influence on the cushion performance of the seat can be reduced.

  Further, the width 36 f of the ventilation groove 36 of the support panel 28 is formed larger than the opening width 42 d of the ventilation hole 42 c of the seat pad 42. Thereby, when the seated person sits on the vehicle seat 10, even if the vent hole 42 c of the seat pad 42 is displaced from the vent groove 36 of the support panel 28, the opening of the vent hole 42 c is prevented from being blocked. The air flow between the ventilation groove 36 and the ventilation hole 42c is not hindered.

  The air conditioning unit is fixed to the support panel 28. The support panel 28 is made of a rigid material for supporting the sea pad. Therefore, the air conditioning unit can be mounted on the vehicle seat 10 without requiring a new member.

  As mentioned above, although embodiment of this invention was described, the vehicle seat of this invention is not limited to this embodiment, It can implement with other various forms. For example, in this embodiment, it showed about the structure which the air blower as an air-conditioning unit selects a multiblade air blower (sirocco fan) as a centrifugal air blower. However, the present invention is not limited to this, and a centrifugal fan or a centrifugal blower provided with an appropriate multi-blade, and further, an axial fan or an axial blower is selected without being limited to a centrifugal fan. It may be a configuration. At this time, when an axial fan or an axial blower is selected, it should be noted that in consideration of the thinness of the seat cushion, consideration is given to the location of the blower, the shape of the ventilation groove and the opening of the support panel, and the like.

  Moreover, in this embodiment, it showed about the structure which blows off air toward the outward of the seat surface of a vehicle seat. However, the present invention is not limited to this, and the air flow by the blower may be reversed to suck the air toward the inner side of the seat surface of the vehicle seat. For example, it can be set as the structure which attracts | sucks applying various combinations, the blowing type by an axial-flow type fan, a centrifugal fan, and an intake type. The suction configuration is particularly suitable in summer. In summer, this is one measure as a configuration for discharging heat and moisture between the seated person and the seat to the outside.

  The air conditioning unit may have a configuration in which a heat exchanger is provided between the multiblade fan and the ventilation groove. For example, a configuration in which a Peltier element, which is a kind of thermoelectric element, is selected as the configuration of the heat exchanger is given as an example. The Peltier element is a plate-like semiconductor element that utilizes the Peltier effect that heat is transferred from one metal to the other when a current is passed through a joint between two kinds of metals. When a direct current is passed through the Peltier element, one surface absorbs heat and the other surface generates heat. Further, when the polarity of the current is reversed, the relationship between heat absorption and heat generation is reversed. Accordingly, the heat exchanger can be heated or cooled by attaching a heat sink to the element and ventilating air.

DESCRIPTION OF SYMBOLS 10 Vehicle seat 12 Seat back 14 Seat back frame 15 Reclining shaft 16 Seat cushion 18 Cushion frame 20, 20 Side frame 22 Front frame 24 Rear frame 26 Support frame 28 Support panel 28a Support surface 28b Back surface 30 of support panel Welding part 32 Stop portion 34 Lock portion 36 Ventilation groove 36a Vertical groove 36b Vertical groove 36c Vertical groove 36d Horizontal groove 36e Opening portion 36f Ventilation groove width 38 Engagement hole 40 Side shield 42 Seat pad 42a Seat pad surface 42b Seat pad back surface 42c Through 42 d of air holes Opening width 44 of the vent hole Skin 46 Reclining plate 48 Bolt 50 Reclining mechanism 60 Multiblade blower (air conditioning unit)
62 cylindrical portion 64 outlet 66 engaging portion 66a elastic deformation portion 66b engaging claw 68 wire harness 70 slide rail F vehicle floor surface

Claims (3)

A vehicle seat provided with an air conditioning unit that blows air toward the outside of the seat surface of the vehicle seat or sucks air toward the inside of the seat surface of the vehicle seat,
It has a seat pad that supports the seated person and a support panel that supports the seat pad from the back side.
The support surface of the support panel is formed with a vent groove that is recessed on the side opposite to the support direction of the seat pad as viewed in cross-section.
The seat pad is formed with a vent hole connected from the back side to the front side corresponding to the position of the vent groove formed on the support surface of the support panel,
The vehicle seat, wherein the air conditioning unit is connected to a ventilation groove of the support panel so that air flows through a ventilation hole of a seat pad. The vehicle seat according to claim 1,
The vehicle seat according to claim 1, wherein the support panel is formed so that a width of the ventilation groove is larger than an opening width of the ventilation hole of the seat pad as viewed in a cross-sectional view. The vehicle seat according to claim 1 or 2,
The vehicle seat, wherein the air conditioning unit is fixed to the support panel.

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