JP2016220783A - Seat pad and manufacturing apparatus for seat pad - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve sitting comfort properties.SOLUTION: A seat pad 10 has a placement surface 11. In the seat pad 10, a lateral slit part 15 extending from the outside of the seat pad 10 toward the inside is formed in a first lateral direction B1 along the placement surface 11. Recess-projection parts 18 connected in a regulation direction B2 along the placement surface 11 are respectively formed in a first inner surface 16 positioned on a side of the placement surface 11 in a thickness direction H perpendicular to the placement surface 11 and in a second inner surface 17 positioned on a non-placement surface side in the thickness direction H out of inner surfaces that define the lateral slit part 15. In a first recess-projection part 19 which is the recess-projection part 18 formed in the first inner surface 16 and a second recess-projection part 20 which is the recess-projection part 18 formed in the second inner surface 17, a recess part 18a and a projection part 18b face each other in the thickness direction H.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a sheet pad and a sheet pad manufacturing apparatus.

  Conventionally, for example, a pad for a sheet described in Patent Document 1 below is known.

JP 2006-149466 A

  However, the conventional seat pad has room for improvement in improving the seating comfort (feeling of stroke) so that the seat pad can be flexed appropriately at the time of sitting and can maintain a stable posture.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to improve sitting comfort.

In order to solve the above problems, the present invention proposes the following means.
The seat pad according to the present invention is a seat pad having a placement surface, and extends from the outside to the inside of the seat pad along the first lateral direction along the placement surface. 1st inner surface located in the mounting surface side along the thickness direction orthogonal to the said mounting surface among the inner surfaces which form the said horizontal slit part, and the opposite mounting surface along the said thickness direction On the second inner surface located on the side, an uneven portion that is continuous in the regulation direction along the placement surface is formed, and the first uneven portion that is the uneven portion formed on the first inner surface, and the second inner surface In the second concavo-convex part, which is the concavo-convex part formed on the surface, the concave and convex parts are opposed to each other in the thickness direction.

In this case, a lateral slit portion extending from the outside to the inside of the seat pad is formed in the seat pad along the first lateral direction. Therefore, when the occupant sits on the seating surface, the seat pad is deformed so that the lateral slit portion is narrowed in the thickness direction, thereby suppressing the hardness felt from the seat pad while keeping the seat pad moderate For example, it is possible to improve sitting comfort during sitting or cornering.
In addition, since the first concave portion and the second concave portion are opposed to each other in the thickness direction, the occupant sits on the mounting surface and the lateral slit portion is narrowed in the thickness direction. The first concavo-convex part and the second concavo-convex part can be fitted together. As a result, it is possible to suppress the relative displacement of each part located on both sides of the seat pad in the thickness direction with respect to the seat pad in the regulation direction when the occupant is seated. The property can be further improved.

  At least a part of the lateral slit portion may gradually decrease in the thickness direction along the first lateral direction from the outside to the inside of the sheet pad.

In this case, at least a part of the lateral slit portion gradually decreases in the thickness direction from the outside to the inside of the sheet pad along the first lateral direction. Therefore, a relatively large portion in the thickness direction of the lateral slit portion can be positioned in a portion of the placement surface that is located outside the seat pad where a load is not easily applied when the occupant is seated. As a result, the seat pad can be bent with little deviation over a wide range of the placement surface, and the seating comfort can be further improved.
When the lateral slit portion gradually decreases in the thickness direction from the outer side to the inner side of the sheet pad over the entire length in the first lateral direction, the degree of deformation of the sheet pad is determined in the first lateral direction. Thus, it is possible to effectively change the sense of discomfort when the seat pad is bent.

  At least a part of the lateral slit portion may gradually increase in the thickness direction from the outside to the inside of the sheet pad along the first lateral direction.

In this case, at least a part of the lateral slit portion gradually increases in the thickness direction along the first lateral direction from the outer side to the inner side of the sheet pad. Therefore, a portion of the placement surface that is located inside the seat pad that is easily loaded when the occupant is seated can be positively deformed compared to a portion that is located outside. Thereby, for example, without adjusting the size of the seat pad in the thickness direction, the seat pad can be deformed so as to wrap the occupant from the outside in the first lateral direction on the placement surface. This makes it possible to further improve sitting comfort.
When the lateral slit portion is gradually increased in the thickness direction from the outside to the inside of the sheet pad over the entire length in the first lateral direction, the degree of deformation of the sheet pad is determined in the first lateral direction. Thus, it is possible to effectively change the sense of discomfort when the seat pad is bent.

  The lateral slit portion may be curved so as to be convex toward the thickness direction.

In this case, since the lateral slit portion is curved so as to be convex in the thickness direction, the lateral slit portion can be easily aligned with the outer shape of the occupant seated on the placement surface. As a result, the seat pad can be bent along the occupant's outer shape, and the fit can be enhanced to improve sitting comfort.
When the lateral slit is curved so as to be convex toward the side opposite to the mounting surface along the thickness direction, the seat pad can be flexed effectively along the outer shape of the occupant. The seating comfort can be improved by improving the fit.

  In the lateral slit portion, a longitudinal end extending from the lateral slit portion toward the placement surface along the thickness direction is provided at an end portion in the second lateral direction perpendicular to the first lateral direction along the placement surface. A slit portion may be provided.

In this case, the vertical slit part is provided in the edge part of the 2nd horizontal direction in a horizontal slit part. Therefore, when the occupant sits on the mounting surface, the portion of the seat pad positioned between the mounting surface and the horizontal slit portion (hereinafter referred to as “pressure receiving”) so that the vertical slit portion narrows in the second horizontal direction. Can be extended and deformed toward the outside in the second lateral direction. Thus, the seat pad can be deformed so as to wrap the occupant from the outside in the second lateral direction on the placement surface, and the seating comfort can be further improved.
In addition, when the horizontal slit part and the vertical slit part are opened on the surface of the sheet pad, the pressure receiving deformation part of the sheet pad can be easily deformed independently of the other parts. Therefore, when the core forming the lateral slit portion in the mold for forming the sheet pad is removed from the sheet pad, the pressure receiving deformation portion is positively deformed and an excessive load is applied to the pressure receiving deformation portion. This can be suppressed, and the sheet pad can be easily and accurately formed.

  The said horizontal slit part may become long in the said 1st horizontal direction gradually as it goes inside from the outer side along the 2nd horizontal direction orthogonal to the said 1st horizontal direction along the mounting surface mentioned above.

  In this case, the lateral slit portion gradually becomes longer in the first lateral direction as it goes from the outside toward the inside along the second lateral direction. Therefore, on the placement surface, the portion where the second lateral center portion of the lateral slit portion is located is positively deformed as compared to the portions where the second lateral end portions of the lateral slit portion are located. be able to. Accordingly, the seat pad can be deformed so as to wrap the occupant from the outside in the second lateral direction on the placement surface, and the seating comfort can be further improved.

  In addition, the sheet pad manufacturing apparatus according to the present invention includes a cavity defined by the cavity surfaces of the plurality of molding dies between the plurality of molding dies, and forms a sheet pad having a placement surface. An apparatus for manufacturing a sheet pad, wherein the outer side of the cavity is disposed along the first lateral direction along the placement surface forming portion that is disposed in the cavity and forms the placement surface of the cavity surface. A mounting surface forming portion side along the thickness direction of the surface facing the thickness direction orthogonal to the mounting surface forming portion in the horizontal slit forming portion. The first surface located on the second surface and the second surface located on the side opposite to the placement surface forming portion along the thickness direction are each provided with a concavo-convex forming portion that continues in the regulation direction along the placement surface forming portion. Said first surface In the first concavo-convex forming portion that is the formed concavo-convex forming portion and the second concavo-convex forming portion that is the concavo-convex forming portion formed on the second surface, each concave portion and convex portion form the lateral slit. It is characterized by being opposed to the thickness direction with a portion interposed therebetween.

  In this case, it is possible to form the horizontal slit portion by the horizontal slit forming portion, and to form the first uneven portion and the second uneven portion by the first uneven portion forming portion and the second uneven portion forming portion. Like the pad, a seat pad that can improve sitting comfort can be reliably formed.

  The horizontal slit forming part may protrude from the cavity surface into the cavity.

  In this case, since the horizontal slit forming portion protrudes from the cavity surface into the cavity, the horizontal slit forming portion can be exposed from the surface of the sheet pad formed in the cavity, and the sheet pad is removed. It can be easily removed from the horizontal slit forming part.

  The horizontal slit forming part may be detachably attached to the cavity surface.

  In this case, since the lateral slit forming portion is detachably attached to the cavity surface, the sheet pad can be more easily removed from the lateral slit forming portion.

  According to the present invention, sitting comfort can be improved.

It is a top view of the pad for sheets concerning a 1st embodiment of the present invention. It is sectional drawing of the pad for sheets shown in FIG. It is a perspective view of the principal part of the pad for sheets shown in FIG. It is a perspective view of the principal part of the pad for seats shown in Drawing 1, and is a figure showing the state where a crew member sat down. It is a perspective view of the principal part of the pad for sheets concerning a 2nd embodiment of the present invention. It is sectional drawing of the metal mold | die which forms the pad for sheets shown in FIG. 1 or FIG. It is a top view of the core which comprises the metal mold | die shown in FIG. It is a top view of the pad for sheets concerning a 3rd embodiment of the present invention. It is a side view of the pad for sheets shown in FIG. It is sectional drawing of the pad for sheets shown in FIG. It is sectional drawing of the pad for sheets which concerns on 4th Embodiment of this invention. It is sectional drawing of the pad for sheets which concerns on 5th Embodiment of this invention.

(First embodiment)
Hereinafter, the sheet pad 10 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4.
As shown in FIGS. 1 and 2, the sheet pad 10 is formed of a foamed molded body. Examples of the foam molded article include a soft resin foam molded article obtained by foaming a resin material, such as a flexible polyurethane foam (soft resin). In the illustrated example, the sheet pad 10 is integrally formed of the same material.

  The seat pad 10 is employed in, for example, a seat (seat) attached to an automobile (vehicle). The seat pad 10 includes a seating surface 11 (mounting surface) on which an occupant seated on the seat abuts. In the present embodiment, a cushion pad or a back pad can be employed as the seat pad 10.

  When a cushion pad is employed as the seat pad 10, the seating surface 11 faces upward in the vertical direction in a state where the seat pad 10 is attached to the automobile, and the seat pad 10 is loaded with an occupant's load. Acts from above. Further, when a back pad is adopted as the seat pad 10, the seating surface 11 faces the front side of the car in a state where the seat pad 10 is attached to the car, and a passenger's load is placed on the front side of the seat pad 10. Acts from.

  The seat pad 10 is formed in a flat rectangular parallelepiped shape, and the direction perpendicular to the seating surface 11 in the seat pad 10 is the thickness direction H of the seat pad 10. In the seat pad 10, the surface facing the anti-sitting surface side (reverse mounting surface side) along the thickness direction H is an attachment surface 12 (back surface) of the seat pad 10.

  The seat pad 10 is formed in a rectangular shape that extends in the first lateral direction B1 and the second lateral direction B2 (regulatory direction) along the seating surface 11 and orthogonal to each other in a plan view of the seat pad 10. The side surface of the seat pad 10 is provided with a first side surface 13 extending in a direction orthogonal to the first lateral direction B1 and a second side surface 14 extending in a direction orthogonal to the second lateral direction B2. The first lateral direction B1 may be, for example, the left-right direction of the automobile or the front-back direction of the vehicle.

  The sheet pad 10 is formed with a lateral slit portion 15 extending from the outside to the inside of the sheet pad 10 along the first lateral direction B1. The lateral slit portions 15 are separately provided at portions located on both sides in the first lateral direction B1 in the sheet pad 10, and are not provided in the central portion in the first lateral direction B1. The lateral slit portion 15 extends from the outside to the inside of the sheet pad 10 in a plan view of the sheet pad 10.

  The outer end portion of the lateral slit portion 15 in the first lateral direction B1 is open to the surface of the sheet pad 10, and the inner end portion of the lateral slit portion 15 in the first lateral direction B1 is the seat pad 10. The surface is non-open. The lateral slit portion 15 is open to the first side surface 13 and extends from the first side surface 13 toward the inside of the first lateral direction B1.

  The magnitude | size of the 1st horizontal direction B1 of the horizontal slit part 15 is equivalent over the full length of 2nd horizontal direction B2. The lateral slit portion 15 is smaller than the sheet pad 10 in the second lateral direction B <b> 2 and is not open on the second side surface 14. The magnitude | size of the 2nd horizontal direction B2 of the horizontal slit part 15 is about 10-25 mm, for example.

  As shown in FIG. 2, the lateral slit portion 15 gradually extends toward the side opposite to the seating surface along the thickness direction H as it goes inward in the first lateral direction B1. The height which is the magnitude | size along the thickness direction H of the horizontal slit part 15 is equivalent over the full length of 1st horizontal direction B1.

  As shown in FIG. 3, among the inner surfaces defining the horizontal slit portion 15, the first inner surface 16 positioned on the seating surface 11 side along the thickness direction H and the anti-seat surface side along the thickness direction H The second inner surface 17 is formed with a concavo-convex portion 18 that continues in the second lateral direction B2. The concave portion 18a and the convex portion 18b constituting the concave-convex portion 18 extend along the first lateral direction B1. The concave portion 18a and the convex portion 18b are formed in a triangular shape in a front view as viewed from the first lateral direction B1.

  The first uneven portion 19 that is the uneven portion 18 formed on the first inner surface 16 and the second uneven portion 20 that is the uneven portion 18 formed on the second inner surface 17 are front views as viewed from the first lateral direction B1. , The wave shapes formed by the respective surfaces are equivalent to each other. In the waveform formed by the surfaces of the first uneven portion 19 and the second uneven portion 20, the period along the second lateral direction B2 and the amplitude along the thickness direction H are equal to each other. In the first concavo-convex portion 19 and the second concavo-convex portion 20, the concave portions 18a and the convex portions 18b face each other in the thickness direction H.

  As described above, according to the seat pad 10 according to the present embodiment, the lateral slit portion that extends from the outer side to the inner side of the seat pad 10 along the first lateral direction B1 in the seat pad 10. 15 is formed. Therefore, when the occupant sits on the mounting surface, the seat pad 10 is deformed so as to narrow the lateral slit portion 15 in the thickness direction H, thereby suppressing the hardness felt from the seat pad 10. The pad 10 can be flexed appropriately, and for example, sitting comfort during seating or cornering can be improved.

  In addition, since the concave portion 18a and the convex portion 18b are opposed to each other in the thickness direction H in the first concave portion 19 and the second concave portion 20, the occupant sits on the seating surface 11 as shown in FIG. Thus, when the lateral slit portion 15 is narrowed in the thickness direction H, the first uneven portion 19 and the second uneven portion 20 can be fitted together. Accordingly, it is possible to prevent the portions of the seat pad 70 located on both sides of the lateral slit portion 15 in the thickness direction H from being relatively displaced in the second lateral direction B2 when the occupant is seated. This makes it possible to further improve the sitting comfort.

(Second Embodiment)
Next, the pad 30 for sheet | seats of 2nd Embodiment which concerns on this invention is demonstrated with reference to FIG.
In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and different points are mainly described.

  In the seat pad 30 according to the present embodiment, the concave portion 18a and the convex portion 18b are formed in an arc shape when viewed from the front in the first lateral direction B1.

  Here, a mold 50 (sheet pad manufacturing apparatus) for forming the sheet pads 10 and 30 according to the present embodiment or the first embodiment will be described with reference to FIGS. 6 and 7.

  As shown in FIG. 6, the mold 50 includes cavities 53 defined by the cavity surfaces 52 of the plurality of molds 51 between the plurality of molds 51. The cavity 53 has the same shape and the same size as the sheet pads 10 and 30. In the present embodiment, an upper mold 54 and a lower mold 55 are provided as the plurality of molds 51. The cavity surface 52 of the lower die 55 is provided with a seating surface forming portion 56 (mounting surface forming portion) that forms the seating surface 11 of the seat pads 10 and 30. The plurality of molding dies 51 open and close in a thickness direction H (opening / closing direction of the plurality of molding dies) perpendicular to the seating surface forming portion 56 and along the vertical direction.

  A lateral slit forming portion 57 that forms the lateral slit portion 15 is provided in the cavity 53. A pair of the lateral slit forming portions 57 are arranged at an interval in the first lateral direction B1 along the seating surface forming portion 56. The pair of lateral slit forming portions 57 are formed in the same shape and the same size, and are arranged symmetrically in the first width direction B. The lateral slit forming portion 57 extends from the outside to the inside of the cavity 53 along the first lateral direction B1.

  The horizontal slit forming portion 57 is detachably attached to the cavity surface 52. The lateral slit forming portion 57 protrudes from the cavity surface 52 into the cavity 53. In the illustrated example, the portion of the cavity surface 52 that avoids the seating surface forming portion 56, specifically, the seat pad 10, 30 protrudes from the portion forming the first side surface 13 into the cavity 53. The lateral slit forming portion 57 is gradually separated from the seating surface forming portion 56 along the thickness direction H as it goes from the outside toward the inside along the first lateral direction B1. The horizontal slit forming portion 57 is formed in a plate shape whose front and back faces in the thickness direction H.

  Among the surfaces facing the thickness direction H in the lateral slit forming portion 57, the first surface 58 located on the seating surface forming portion 56 side along the thickness direction H and the side opposite to the seating surface forming portion along the thickness direction H On each of the second surfaces 59 located at the positions, the concave and convex portions 60 that are continuous in the second lateral direction B2 are formed. In the first unevenness forming part 61 that is the unevenness forming part 60 formed on the first surface 58 and the second unevenness forming part 62 that is the unevenness forming part 60 formed on the second surface 59, the recesses 60 a and the protrusions are formed. The portion 60b faces the thickness direction H with the horizontal slit forming portion 57 interposed therebetween. The first uneven portion 61 forms the first uneven portion 19, and the second uneven portion 62 forms the second uneven portion 20.

  In the sheet pad manufacturing method using the mold 50, the foaming raw material is foamed in the cavity 53 to form the sheet pads 10 and 30, and then the plurality of molding dies 51 are opened to open the sheet pad. 10 and 30, the mold 51 and the lateral slit forming portion 57 are removed, thereby forming the sheet pads 10 and 30.

  As described above, according to the mold 50 according to the present embodiment, the horizontal slit portion 15 is formed by the horizontal slit forming portion 57, and the first unevenness is formed by the first unevenness forming portion 61 and the second unevenness forming portion 62. It is possible to form the portion 19 and the second uneven portion 20 and to reliably form the seat pads 10 and 30 that can improve the sitting comfort like the seat pads 10 and 30 described above. Can do.

Further, since the lateral slit forming portion 57 protrudes from the cavity surface 52 into the cavity 53, the lateral slit forming portion 57 can be exposed from the surface of the sheet pads 10 and 30 formed in the cavity 53. Thus, the sheet pads 10 and 30 can be easily removed from the lateral slit forming portion 57.
Further, since the lateral slit forming portion 57 is detachably attached to the cavity surface 52, the sheet pads 10 and 30 can be more easily removed from the lateral slit forming portion 57.

(Third embodiment)
Next, the pad 70 for sheet | seats of 3rd Embodiment which concerns on this invention is demonstrated with reference to FIGS.
In the third embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and different points are mainly described.

  As shown in FIG. 8, in the sheet pad 70 according to the present embodiment, the lateral slit portion 15 gradually becomes longer in the first lateral direction B1 from the outside toward the inside along the second lateral direction B2. . An end portion of the lateral slit portion 15 on the inner side in the first lateral direction B1 is curved so as to protrude toward the inner side of the first lateral direction B1 in the plan view of the sheet pad 70.

  As shown in FIG. 10, at least a part of the horizontal slit portion 15 gradually decreases in the thickness direction H from the outside to the inside of the sheet pad 10 along the first horizontal direction B1. In the illustrated example, the lateral slit portion 15 gradually decreases in the thickness direction H from the outside to the inside of the sheet pad 10 over the entire length in the first lateral direction B1. The lateral slit portion 15 is formed in a triangular shape that is convex toward the inside of the first lateral direction B1 in a cross-sectional view when the sheet pad 10 is viewed from the second lateral direction B2.

  The lateral slit portion 15 is curved so as to be convex toward the thickness direction H. In the illustrated example, the lateral slit portion 15 is curved so as to be convex toward the side opposite to the seating surface along the thickness direction H. The inner end portion of the lateral slit portion 15 in the first lateral direction B1 is located on the side opposite to the seating surface along the thickness direction H than the outer end portion of the lateral slit portion 15 in the first lateral direction B1. . The lateral slit portion 15 is curved along the outer shape of the seated passenger.

  As shown in FIGS. 8 and 9, a longitudinal slit portion 21 extending from the lateral slit portion 15 toward the seating surface 11 along the thickness direction H is provided at the end portion of the lateral slit portion 15 in the second lateral direction B2. Is provided. The vertical slit portions 21 are provided separately at both end portions of the horizontal slit portion 15 in the second horizontal direction B2. The longitudinal slit portion 21 is formed over the entire length of the lateral slit portion 15 in the first lateral direction B1. The longitudinal slit portion 21 is formed in a linear shape extending in the first lateral direction B1 in a plan view of the sheet pad 10. The vertical slit portion 21 extends from the horizontal slit portion 15 to the seating surface 11 and opens to the seating surface 11 over the entire length in the first lateral direction B1. The position of the vertical slit portion 21 in the second horizontal direction B2 is the same over the entire length in the thickness direction H, and the vertical slit portion 21 is in the thickness direction H in a front view as viewed from the second horizontal direction B2. It extends straight.

  As described above, according to the seat pad 70 according to the present embodiment, at least a part of the lateral slit portion 15 is directed from the outside to the inside of the seat pad 70 along the first lateral direction B1. Gradually, it decreases in the thickness direction H. Therefore, a relatively large portion in the thickness direction H of the lateral slit portion 15 is positioned in a portion of the seating surface 11 that is located outside the seat pad 70 where a load is not easily applied when the occupant is seated. Can do. As a result, the seat pad 70 can be deflected with little deviation over a wide range of the seating surface 11, and the seating comfort can be further improved.

  Further, since the lateral slit portion 15 gradually decreases in the thickness direction H from the outside to the inside of the sheet pad 70 over the entire length in the first lateral direction B1, the degree of deformation of the sheet pad 70 is reduced. It becomes possible to change gradually along the first lateral direction B1, and it is possible to effectively suppress a sense of discomfort when the seat pad 70 is bent.

Further, since the lateral slit portion 15 is curved so as to be convex in the thickness direction H, the lateral slit portion 15 can be easily conformed to the outer shape of the occupant seated on the seating surface 11. As a result, the seat pad 70 can be bent along the occupant's outer shape, and the fit can be enhanced to improve sitting comfort.
When the lateral slit portion 15 is curved so as to be convex toward the side opposite to the seating surface along the thickness direction H as in the present embodiment, the seat pad 70 is effective along the outer shape of the occupant. It becomes possible to bend flexibly, and it is possible to improve the sitting comfort by enhancing the fit.

  In addition, a vertical slit portion 21 is provided at an end portion of the horizontal slit portion 15 in the second horizontal direction B2. Therefore, when the occupant is seated on the seating surface 11, a portion (between the seating surface 11 and the lateral slit portion 15) in the seat pad 70 so that the vertical slit portion 21 narrows in the second lateral direction B <b> 2 ( Hereinafter, the “pressure receiving deformation portion”) can be extended and deformed outward in the second lateral direction B2. Thus, the seat pad 70 can be deformed so as to wrap the occupant from the outside in the second lateral direction B2 on the seating surface 11, and the seating comfort can be further improved.

  When the horizontal slit portion 15 and the vertical slit portion 21 are open on the surface of the sheet pad 70 as in the present embodiment, the pressure receiving deformation portion of the sheet pad 70 is independent of other portions. It can be easily deformed. Therefore, when the core forming the lateral slit portion 15 is removed from the sheet pad 70 in the mold for forming the sheet pad 70, the pressure receiving deformation portion is positively deformed and excessively applied to the pressure receiving deformation portion. Therefore, it is possible to prevent the load from being applied, and the sheet pad 70 can be easily and accurately formed.

  Moreover, the horizontal slit part 15 becomes long in the 1st horizontal direction B1 gradually as it goes inside from the outer side along the 2nd horizontal direction B2. Therefore, in the seating surface 11, the portion where the central portion in the second lateral direction B <b> 2 of the lateral slit portion 15 is positioned is more positive than the portions where both end portions in the second lateral direction B <b> 2 of the lateral slit portion 15 are positioned. Can be transformed. Thus, the seat pad 70 can be deformed so as to wrap the occupant from the outside in the second lateral direction B2 on the seating surface 11, and the seating comfort can be further improved.

(Fourth embodiment)
Next, the pad 80 for sheets of 4th Embodiment which concerns on this invention is demonstrated with reference to FIG.
In the fourth embodiment, the same components as those in the third embodiment are denoted by the same reference numerals, description thereof is omitted, and different points are mainly described.

  In the sheet pad 80 according to the present embodiment, at least a part of the lateral slit portion 15 gradually increases in the thickness direction H from the outside toward the inside of the sheet pad 80 along the first lateral direction B1. It has become. In the illustrated example, the lateral slit portion 15 gradually increases in the thickness direction H from the outside to the inside of the sheet pad 80 over the entire length in the first lateral direction B1. The lateral slit portion 15 is formed in a triangular shape that protrudes outward in the first lateral direction B1 in a cross-sectional view when the sheet pad 80 is viewed from the second lateral direction B2.

  As described above, according to the seat pad 80 according to the present embodiment, at least a part of the lateral slit portion 15 is directed from the outside to the inside of the seat pad 80 along the first lateral direction B1. Gradually, it increases in the thickness direction H. Accordingly, a portion of the seating surface 11 that is located on the inner side of the seat pad 80 that is likely to be loaded when an occupant is seated can be positively deformed as compared to a portion that is located on the outer side. Thereby, for example, without adjusting the size of the seat pad 80 in the thickness direction H, the seat pad 80 is wrapped on the seating surface 11 from the outside in the first lateral direction B1. It becomes possible to deform, and the sitting comfort can be further improved.

  Further, since the lateral slit portion 15 gradually increases in the thickness direction H from the outside to the inside of the sheet pad 80 over the entire length in the first lateral direction B1, the degree of deformation of the sheet pad 80 is reduced. It becomes possible to change gradually along the first lateral direction B1, and it is possible to effectively suppress a sense of discomfort when the seat pad 80 is bent.

(Fifth embodiment)
Next, a sheet pad 90 according to a fifth embodiment of the present invention will be described with reference to FIG.
In the fifth embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and different points are mainly described.

  The sheet pad 90 according to the present embodiment is integrally formed of different materials, and in the illustrated example, layers 91 and 92 having different hardnesses are laminated in the thickness direction H.

The seat pad 90 includes a base layer 91 on the attachment surface 12 side and a cushion layer 92 on the seating surface 11 side. The base layer 91 and the cushion layer 92 are partitioned in the thickness direction H by the lateral slit portion 15, and a portion of the seat pad 90 that is located closer to the mounting surface 12 than the lateral slit portion 15 is the base layer 91. The cushion layer 92 is a portion located closer to the seating surface 11 than the lateral slit portion 15.
In the present embodiment, the seating surface 11 is formed by the cushion layer 92, and the hardness of the cushion layer 92 is lower than the hardness of the base layer 91.

  In the illustrated example, the base layer 91 is disposed on both sides of the seat pad 90 in the first lateral direction B1, and the central portion in the first lateral direction B1 is configured by the cushion layer 92. ing. That is, the cushion layer 92 is formed in a T-shape that protrudes toward the mounting surface 12 in a cross-sectional view when the seat pad 10 is viewed from the second lateral direction B2. The base layer 91 is connected to the protruding portion separately from both sides in the first lateral direction B1.

  As described above, according to the seat pad 90 according to the present embodiment, the base layer 91 and the cushion layer 92 are partitioned in the thickness direction H by the lateral slit portion 15, so that the occupant is seated on the seating surface 11. It is possible to prevent the base layer 91 from being deformed following the cushion layer 92 when the cushion layer 92 is deformed due to the seating. Thereby, the characteristics of the layers 91 and 92 can be easily exhibited.

  Further, as described above, when the occupant is seated, the base layer 91 can be prevented from being deformed following the cushion layer 92, and in the present embodiment, the lateral slit portion 15 is formed in the first position in the seat pad 10. It is provided separately for each part located on both sides in the lateral direction B1. Therefore, when the occupant is seated, it is possible to suppress a feeling of tension (uncomfortable feeling) from occurring in the center portion of the seating surface 11 in the first lateral direction B1 where a load is easily applied. Thereby, the characteristics of the layers 91 and 92 can be more easily exhibited.

  As described above, according to the seat pad 90 of the present embodiment, the characteristics of the layers 91 and 92 can be more easily exhibited. However, in the present embodiment, the hardness of the cushion layer 92 is less than that of the base layer 91. It is lower than the hardness. Therefore, while the cushion layer 92 ensures a fit for the occupant, the base layer 91 makes it possible to ensure a hold feeling for the occupant, thereby effectively improving the sitting comfort.

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

  For example, in the embodiment, the sheet pads 10, 30, 70, and 80 are integrally formed of the same material, but the present invention is not limited to this. For example, the sheet pads 10, 30, 70, 80 can be integrally formed of different materials.

In the above-described embodiment, the lateral slit portions 15 are separately provided in portions located on both sides of the first lateral direction B1 in the sheet pads 10, 30, 70, 80, 90. Not limited. The lateral slit portion 15 may be provided only on one side in the first lateral direction B1. It is possible to appropriately change to another form in which one or a plurality of lateral slit portions 15 are provided.
In the above-described embodiment, the lateral slit portion 15 is opened on the first side surface 13, but may not be opened on the first side surface 13.

  In the said embodiment, although the uneven | corrugated | grooved part 18 continues in the 2nd horizontal direction B2, this invention is not limited to this. For example, the uneven portion 18 may be continuous in the first lateral direction B1. Each of the first inner surface 16 and the second inner surface 17 of the lateral slit portion 15 can be appropriately changed to another form in which the concavo-convex portions 18 connected to the regulation direction along the seating surface 11 are formed.

  The seat pads 10, 30, 70, 80, 90 can be used for various uses such as a cushion material for indoor chairs and bedding. Furthermore, the seat pad 10, 30, 70, 80, 90 having a placement surface on which a luggage or the like is placed is not limited to a person sitting.

  In addition, it is possible to appropriately replace the constituent elements in the embodiment with known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

10, 30, 70, 80, 90 Seat pad 11 Seating surface (mounting surface)
DESCRIPTION OF SYMBOLS 15 Horizontal slit part 16 1st inner surface 17 2nd inner surface 18 Uneven part 18a Recessed part 18b Convex part 19 First uneven part 20 Second uneven part 21 Vertical slit part 30 Sheet pad 50 Mold (sheet pad manufacturing apparatus)
51 Mold 52 Cavity surface 53 Cavity 56 Seating surface forming portion (mounting surface forming portion)
57 Horizontal slit forming part 58 First surface 59 Second surface 60 Concave forming part 60a Concave part 60b Convex part 61 First uneven part forming part 62 Second uneven part forming part B1 First lateral direction B2 Second lateral direction H Thickness direction

Claims (9)

A pad for a sheet having a mounting surface,
A horizontal slit portion extending from the outside to the inside of the sheet pad is formed along the first horizontal direction along the placement surface,
Among the inner surfaces defining the horizontal slit portion, the first inner surface located on the placement surface side along the thickness direction orthogonal to the placement surface, and the opposite placement surface side along the thickness direction. Each of the second inner surface is formed with a concavo-convex portion that continues in the regulation direction along the placement surface,
In the first concavo-convex portion that is the concavo-convex portion formed on the first inner surface and the second concavo-convex portion that is the concavo-convex portion formed on the second inner surface, each concave portion and convex portion are in the thickness direction. A pad for a sheet characterized by facing the surface.   The at least part of the said horizontal slit part is gradually small in the said thickness direction toward the inner side from the outer side of the said sheet | seat pad along the said 1st horizontal direction. Seat pad.   The at least part of the said horizontal slit part is gradually enlarged in the said thickness direction toward the inner side from the outer side of the said sheet | seat pad along the said 1st horizontal direction. Seat pad.   The sheet pad according to any one of claims 1 to 3, wherein the lateral slit portion is curved so as to be convex toward the thickness direction.   In the lateral slit portion, a longitudinal end extending from the lateral slit portion toward the placement surface along the thickness direction is provided at an end portion in the second lateral direction perpendicular to the first lateral direction along the placement surface. The pad for sheets according to claim 1, wherein a slit portion is provided.   The lateral slit portion is gradually longer in the first lateral direction along the second lateral direction from the outside along the second lateral direction orthogonal to the first lateral direction along the placement surface. The pad for sheet | seats of any one of Claim 1 to 5. A sheet pad manufacturing apparatus comprising a cavity defined by cavity surfaces of each of the plurality of molding dies between a plurality of molding dies, and forming a sheet pad having a placement surface,
A lateral slit forming portion disposed in the cavity and extending from the outside to the inside of the cavity along a first lateral direction along a placement surface forming portion that forms the placement surface of the cavity surface. Prepared,
In the horizontal slit forming portion, among the surfaces facing the thickness direction orthogonal to the mounting surface forming portion, the first surface located on the mounting surface forming portion side along the thickness direction, and the thickness direction Each of the second surfaces located on the opposite mounting surface forming part side is formed with an unevenness forming part that continues to the regulation direction along the mounting surface forming part,
In the first concavo-convex forming portion which is the concavo-convex forming portion formed on the first surface and the second concavo-convex forming portion which is the concavo-convex forming portion formed on the second surface, each concave portion and convex portion are An apparatus for manufacturing a sheet pad, wherein the sheet slits are opposed to each other in the thickness direction with the horizontal slit forming portion interposed therebetween.   8. The sheet pad manufacturing apparatus according to claim 7, wherein the lateral slit forming portion protrudes from the cavity surface into the cavity.   9. The sheet pad manufacturing apparatus according to claim 7, wherein the lateral slit forming portion is detachably attached to the cavity surface.

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