JP2015042519A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat in which a cushion pad as an elastomer is supported on a support panel as a support medium for forming a seat cushion, and reduce mass of the cushion pad for saving weight of the seat by increasing elastic coefficient of the cushion pad.SOLUTION: A plate-state cushion panel 110 which can be deformed by elastic deformation is disposed on a cushion pad 120 so as to support a seating person from downward. The cushion panel 110 is jointed to a body panel 2 at its end part, and elastic coefficient of the cushion panel 110 when the cushion panel 110 deforms by elastic deformation by supporting weight of a seating person, is larger than that of the cushion pad 120.

Description

  The present invention relates to a seat mounted on a vehicle such as an automobile, an airplane, a ship, and a train.

  Patent Document 1 listed below discloses a vehicle seat called a shell-type seat. Such a shell-type seat fixes a cushion shell formed in a shape according to the outer shape of the occupant's buttocks to a support panel on the cushion frame side, and elastically supports the cushion shell. A cushion pad is inserted between them.

JP 2012-40995 A

In order to elastically support the cushion shell, a cushion pad having a predetermined thickness is required, and the mass of the cushion pad is increased. As a result, there is a problem that the weight of the entire sheet becomes heavy.
In view of such a problem, an object of the present invention is to increase the elastic coefficient of a cushion pad in a vehicle seat in which a cushion pad as an elastic body is supported on a support panel as a support body to constitute a seat cushion. Therefore, the weight of the seat is reduced by reducing the mass of the cushion pad.

A first aspect of the present invention is a vehicle seat in which a cushion pad as an elastic body is supported on a support panel as a support to constitute a seat cushion, and a plate-like shape that is elastically deformable on the cushion pad. A cushion panel is provided to support the seated occupant from below, the cushion panel is joined to the support panel at an end thereof, and the cushion panel is elastically deformed while supporting the weight of the seated occupant. Is made larger than that of the cushion pad.
According to the first invention, the cushion pad functions as an elastic body in the seat cushion together with the cushion panel provided thereon. Therefore, compared to the case where the entire cushion pad is configured with only the cushion pad without the cushion panel, even if the elastic coefficient of the entire cushion pad is the same, the mass of the entire cushion pad is reduced by the amount including the cushion panel in the cushion pad, The weight of the seat can be reduced.

According to a second aspect of the present invention, in the first aspect, a surface layer pad as a surface layer material having a smaller elastic coefficient than the cushion panel is provided on the upper surface of the cushion panel, and between the seat occupant and the cushion panel. The surface pad is inserted.
According to the second aspect of the invention, since the surface layer pad is provided on the surface layer of the cushion panel, the seat occupant does not directly touch the cushion panel having an increased elastic coefficient, and the seating feeling can be improved.

According to a third aspect of the present invention, in the second aspect, the cushion pad that supports the cushion panel is formed integrally with the surface layer pad.
According to the third invention, the cushion pad and the surface layer pad can be simultaneously formed with the cushion panel interposed therebetween, and the productivity can be improved.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the cushion panel has a thin-walled portion whose thickness is partially reduced on the plate surface so as to reduce an elastic coefficient. Or a slit is formed.
According to the fourth invention, by providing the thin wall portion or the slit, the elastic coefficient can be appropriately changed for each part within the surface of the cushion panel.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the cushion panel is joined to the support panel at a front end portion and a rear end portion, respectively.
According to the fifth aspect of the invention, the cushion panel is supported by the support panel at the front and rear, so that a stable seating feeling can be obtained.

1 is a perspective view of a first embodiment of the present invention. It is the II-II sectional view enlarged view of FIG. It is an expansion perspective view of the cushion panel in the said 1st Embodiment. It is a bottom view of the cushion panel similar to FIG. It is sectional drawing corresponding to FIG. 2 which shows the comparative example of the seat cushion in the said 1st Embodiment. It is a schematic diagram which shows 2nd Embodiment of this invention. It is a schematic diagram which shows 3rd Embodiment of this invention. It is a schematic diagram which shows 4th Embodiment of this invention.

1 to 4 show a first embodiment of the present invention. The first embodiment shows an example in which the present invention is applied to an automobile rear seat (hereinafter simply referred to as a seat). In each figure, each direction of the sheet is indicated by an arrow. In the following description, the description regarding the direction is made based on this direction.
The seat 1 includes a seat cushion 10 and a seat back 20, and the seat cushion 10 is fixed on the body panel 2 by attachment wires 140 and 150 (see FIGS. 2 and 3). The above configuration is the same as a known one.

  The seat cushion 10 is a resin-made plate-like cushion panel 110 that is elastically deformable, and is disposed under the cushion panel 110 to support the cushion panel 110 with respect to a body panel (corresponding to a support panel of the present invention) 2 The cushion pad 120 and the surface layer pad 130 that covers the entire cushion panel 110 as a surface layer material on the upper side of the cushion panel 110 are configured. The cushion panel 110 is generally formed along the shape of the buttocks of the occupant P so that the occupant feels better when the occupant P is seated thereon. Further, the surface layer pad 130 is also formed along the shape of the cushion panel 110 so that the occupant P does not directly touch the cushion panel 110 so as to give the occupant P a soft seating feeling. In this embodiment, the cushion pad 120 and the surface layer pad 130 are integrally formed of urethane foam, and are integrally formed by insert molding using the cushion panel 110 as an insert material. The mounting wires 140 and 150 described above are configured integrally with the panel body 111 of the cushion panel 110, and are integrally formed by insert molding using the mounting wires 140 and 150 as insert materials. Since the integral molding method is employed in this way, productivity can be improved.

The cushion pad 120 is divided into three rows of a front part 121, a middle part 122, and a rear part 123 in the front-rear direction, and the front part 121 is further divided into three parts in the left-right direction (see FIGS. 2 and 4). ). 4, the rear portion 123 of the cushion pad 120 is illustrated as being provided within the left and right widths of the panel body 111 of the cushion panel, but the cushion pad 120 (not shown) extends to the left and right sides of the panel body 111. It is connected.
Corresponding to the front part 121, the middle part 122, and the rear part 123 of the cushion pad 120, the panel body 111 is formed with three through holes 111b, 111c, and 111d in the left-right direction. Here, the elastic coefficient of the cushion panel 110 in the vertical direction that supports the weight of the seated occupant P is larger than the elastic coefficients of the cushion pad 120 and the surface layer pad 130.

  A box portion 113 formed by recessing the plate surface of the panel body 111 downward is provided at the front center portion of the panel body 111 of the cushion panel 110, and formed on the left and right sides thereof to protrude downward from the panel body 111. A pair of front leg portions 112 are provided. The mounting wire 140 described above is fixed to the lower portion of the box portion 113, and the lower ends of the pair of front leg portions 112 are joined to the body panel 2. An opening 111a is formed in the vicinity of the front, rear, left and right center portions of the panel body 111 and between the through hole 111b and the through hole 111c. The opening 111 a is for reducing the weight of the panel body 111.

  With the above configuration, the cushion pad 120 functions as an elastic body in the seat cushion 10 together with the cushion panel 110 provided thereon. Therefore, compared with the case where the cushion pad is entirely composed of only the cushion pad CP without the cushion panel 110 (see FIG. 5), even if the elastic coefficient of the cushion pad is the same, the cushion pad 110 is included in the cushion pad. The weight of the seat can be reduced by reducing the mass of the entire cushion pad.

FIG. 6 schematically shows a second embodiment of the present invention. 6A shows a side view, and FIG. 6B shows a perspective view. The feature of the second embodiment over the first embodiment described above is that a thin portion 111e is provided on the panel body 111 of the cushion panel 110. The configuration other than this point is the same as that of the first embodiment in the second embodiment, and the same parts are denoted by the same reference numerals and the description thereof is omitted.
The thin-walled portion 111e is configured by forming a groove on the surface of the panel main body 111 over the entire left and right width of the panel main body 111 behind the front leg portion 112 of the panel main body 111.

  As described above, by providing the thin portion 111e on the panel body 111, the elastic coefficient of the portion can be partially reduced, and the elastic coefficient of the cushion panel 110 can be appropriately changed. Therefore, the thin portion 111e is provided at an appropriate location on the panel main body 111 as required to change the elastic coefficient of the cushion panel 110.

FIG. 7 schematically shows a third embodiment of the present invention. FIG. 7 is a perspective view corresponding to FIG. The third embodiment is characterized by the fact that the front leg portion 112 is enlarged and the slit 111f is provided on the panel body 111 of the cushion panel 110. The configuration other than this point is the same as that of the first embodiment in the third embodiment, and the same parts are denoted by the same reference numerals and the description thereof is omitted.
The pair of left and right front legs 112 are enlarged in the front-rear direction compared to the front legs 112 in the first embodiment so as to extend from the front end of the panel body 111 to the vicinity of the center, and the slits 111f are formed in the front-rear direction of the panel body 111. A pair is provided on the left and right from the center to the rear end. Both slits 111f are arranged so that the front end portions thereof are located between both front leg portions 112. A cushion pad 120 is integrally provided at the rear end portion of the panel main body 111 in a region sandwiched between both slits 111f. On the other hand, the cushion pad 120 is not provided at the rear end portion of the panel main body 111 located on the left and right outer sides of the both slits 111f.

  In the third embodiment, since the front leg portion 112 is enlarged, when the automobile collides forward and the occupant slides forward and downward, the so-called submarine phenomenon occurs. Since it is large and strong, it can suppress the occurrence of submarine phenomenon. On the other hand, since the slit 111f is provided as described above, the elastic modulus of the cushion panel 110 can be adjusted to be too large as a result of increasing the front leg portion 112. In addition, the slit 111f is provided in the appropriate place on the panel main body 111 as needed of the change of the elastic coefficient of the cushion panel 110 similarly to the case of the thin part 111e in the said 2nd Embodiment.

FIG. 8 schematically shows a fourth embodiment of the present invention. FIG. 8 is a perspective view corresponding to FIG. 6B and FIG. A feature of the fourth embodiment over the above-described third embodiment is that two cushion panels 110 in the above-described third embodiment are connected in the front-rear direction. The configuration other than this point is the same as that of the third embodiment in the fourth embodiment, and the same parts are denoted by the same reference numerals and the description thereof is omitted.
In 4th Embodiment, it is comprised so that the cushion panel 110 of 3rd Embodiment may be connected with the line object shape in the front-back direction. Accordingly, front leg portions 112 are provided on the left and right sides of the front end portion of the panel body 111, and rear leg portions 114 are provided on the left and right sides of the rear end portion of the panel body 111. In addition, the panel main bodies 111 located on the left and right outer sides of the both slits 111f are coupled to each other at the front and rear and integrated. And the panel main body 111 in the area | region pinched by both the slits 111f is mutually separated by the front and back, and is facing each other, The front side cushion pad 124 and the rear side cushion pad 125 are each provided in each edge part.

  In the fourth embodiment, the front and rear sides of the cushion panel 110 are joined to and supported by the body panel 2 by the front leg portion 112 and the rear leg portion 114, respectively. Therefore, the occupant is firmly supported in the front-rear direction of the seat cushion 10, and a stable seating feeling can be obtained.

As mentioned above, although specific embodiment was described, this invention is not limited to those external appearances and structures, A various change, addition, and deletion are possible in the range which does not change the summary of this invention. For example,
1. In the above embodiment, the surface layer pad 130 is provided on the upper surface of the cushion panel 110, but the surface layer pad 130 is not necessarily provided.
2. The cushion pad 120 that supports the cushion panel 110 may be separated from the surface layer pad 130.
3. In the above embodiment, the present invention is applied to the rear seat of an automobile, but the present invention may be applied to a front seat. Moreover, you may apply to the 2nd row sheet of a 3 row sheet.
4). In the above embodiment, the body panel 2 is a support panel, but a seat frame in a seat on which a seat frame is present may be a support panel.
5. In the above embodiment, the present invention is applied to an automobile seat, but may be applied to a seat mounted on an airplane, a ship, a train, or the like.

1 Automotive rear seats
DESCRIPTION OF SYMBOLS 10 Seat cushion 110 Cushion panel 111 Panel main body 111a Opening part 111b, 111c, 111d Through-hole 111e Thin part 111f Slit 111g Connecting part 112 Front leg part 113 Box part 114 Rear leg part 120 Cushion pad 121 Front part 122 Middle part 123 Rear part 124 Front cushion Pad 125 Rear cushion pad 130 Surface pad 140, 150 Mounting wire 20 Seat back 2 Body panel (support panel)
P Seat Crew CP cushion pad

Claims (5)

In the vehicle seat in which the cushion pad as the elastic body is supported on the support panel as the support body and the seat cushion is configured,
A plate-like cushion panel that is elastically deformable on the cushion pad is provided so as to support the seated occupant from below,
The cushion panel is joined to the support panel at its end,
The vehicle seat, wherein the cushion panel has an elastic coefficient larger than that of the cushion pad when the cushion panel elastically deforms while supporting the weight of a seated occupant. In claim 1,
The upper surface of the cushion panel is also provided with a surface layer pad as a surface layer material having a smaller elastic coefficient than the cushion panel, and the surface layer pad is interposed between a seated occupant and the cushion panel. Vehicle seat to be used. In claim 2,
A cushion pad for supporting the cushion panel is formed integrally with the surface layer pad. In any one of Claims 1 thru | or 3,
The vehicle seat according to claim 1, wherein the cushion panel is formed with a thin portion or a slit partially reduced in thickness so as to reduce an elastic coefficient on the plate surface. In any one of Claims 1 thru | or 4,
The cushion panel is joined to the support panel at a front end portion and a rear end portion, respectively.

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