CN103909854B - Seat pad used for vehicle - Google Patents

Abstract

The topic of the present invention provides a seat pad used for a vehicle with an excellent improved effect on soft feel during riding. The solution is characterized in that in the seat pad (10) used for the vehicle having a pad main body (12) formed by a foamex formed body, the pad main body (12) comprises: a passenger supporting part (14) for supporting a passenger; and a plurality of grooves (28) which are arranged side by side on at least one of a front side and a back side of the passenger supporting part (14), wherein the grooves (28) tilt and sink in the side-by-side direction of the grooves (28) relative to the side of the passenger supporting part (14) where the grooves (28) are arranged.

Description

Seat pads for vehicles

technical field

The present invention relates to a seat pad for a vehicle, in particular to a seat pad which improves the softness of the pad surface.

Background technique

In general, a seat for an automobile uses a seat pad formed of a highly cushioning soft polyurethane foam material, the seat pad is placed on a supporting frame, and the surface of the seat pad is covered with a skin materials to form vehicle seats.

In order to obtain a soft feeling when riding, there is a method in which, in such a seat pad, a soft block-shaped polyurethane foam is pasted on the surface of the seat pad main body formed of foamed polyurethane foam. method. However, this method requires pasting of additional component blocks, so an increase in the number of parts and an increase in pasting steps leads to an increase in cost. In addition, since the block is pasted with an adhesive, there is a possibility that quality defects such as curling may occur due to poor pasting.

The following Patent Document 1 discloses that a plurality of protrusions are provided on at least a part of the passenger contact surface. In addition, the following Patent Document 2 discloses that a plurality of concave parts are provided on at least a part of the passenger contact surface. cavities, thereby increasing the softness of the surface and having good support properties for the occupant.

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2009-78142

Patent Document 2: Japanese Patent Laid-Open No. 2009-160371

Contents of the invention

The problem to be solved by the invention

In the case of providing a plurality of protrusions on the surface of the gasket as in the aforementioned Patent Document 1, in order to form the protrusions, the surface of the foam molding mold must be provided with recesses. It is easy to be filled with the foaming stock solution, so it is easy to cause molding defects such as underfilling.

In addition, when a plurality of dimples are provided on the surface of the gasket as in the aforementioned Patent Document 2, since a plurality of protrusions are provided on the surface of the foam molding die, the foaming stock solution is not easily filled, and molding defects are likely to occur. Not only that, although the convex parts formed between the various dimples can also support passengers, but because the convex parts are connected in a lattice shape, they support passengers while being compressed and deformed during riding, so the softness of riding should be improved. is limited.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle seat pad excellent in the effect of improving the soft feeling when riding.

Solution to the problem

The seat pad for a vehicle according to the present invention includes a pad main body formed of a foamed resin molded body, wherein the pad main body includes: an occupant support portion for supporting an occupant; A plurality of grooves are arranged side by side on at least one of the front side and the back side of the support part, and the grooves are inclined and recessed relative to the direction in which the grooves are arranged in the passenger support part facing the grooves and arranged side by side.

A preferred embodiment of the present invention may be that the grooves are arranged along the width direction of the front surface of the liner main body, and the closer to the central part in the width direction, the deeper the grooves are. In addition, the groove may be provided along the width direction of the front surface of the gasket main body, and the width of the groove becomes wider as it is closer to the central part in the width direction. In addition, the front surface of the liner main body may be provided with a longitudinal groove extending in a direction perpendicular to the width direction, the groove is arranged along the width direction of the front surface of the liner main body, and the end of the groove is spaced from the longitudinal groove . In addition, a longitudinal groove extending in a direction perpendicular to the width direction may be provided on the front surface of the liner main body, the groove is provided along the width direction of the front surface of the liner main body, and the end of the groove is in contact with the The vertical grooves are connected. In addition, the groove may be provided in the width direction of the front surface of the passenger support portion of the pad main body, and the deeper the groove is, the more inclined and recessed it is toward the front. In addition, the seat pad main body may be provided with a cushion pad for supporting the passenger's buttocks and a back pad for supporting the passenger's back, and the groove provided in the passenger support portion of the back pad may be larger than that provided in the passenger support portion. The groove of the passenger support portion of the cushion is more deeply recessed. In addition, the grooves may be provided on the front and back sides of the pad body.

Invention effect

According to the present invention, since a plurality of grooves are arranged side by side on at least one side of the front and back sides of the main body of the cushion, and the grooves are inclined and sunken in the direction in which the grooves are arranged side by side, the plurality of grooves formed between the plurality of grooves when riding The convex line can be bent and deformed in a way of falling down, which can improve the soft feeling when riding. In addition, since the plurality of grooves provided on the gasket main body are arranged side by side, it is less likely to cause underfilling due to poor liquid flow of the foaming stock solution during foam molding of the gasket main body, and the molding characteristics can be improved.

Description of drawings

Fig. 1 is a front view of a vehicle seat pad according to a first embodiment of the present invention.

Fig. 2 is a sectional view along line A-A of Fig. 1 .

Fig. 3 is a sectional view along line B-B of Fig. 1 .

Fig. 4 is a cross-sectional view of a foam molding die for the seat pad shown in Fig. 1 .

Fig. 5 is a sectional view of a vehicle seat pad according to a second embodiment of the present invention.

Fig. 6 is a front view of a vehicle seat pad according to a third embodiment of the present invention.

Fig. 7 is a front view of a vehicle seat pad according to a modified example of the third embodiment of the present invention.

Fig. 8 is a front view of a vehicle seat pad according to a fourth embodiment of the present invention.

Fig. 9 is a sectional view of a vehicle seat pad according to a fifth embodiment of the present invention.

detailed description

(first embodiment)

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

As shown in FIGS. 1 to 3 , a vehicle seat pad (hereinafter referred to as a seat pad) 10 according to a first embodiment is a component for supporting the buttocks of a passenger as an occupant in a car seat. Pad main body 12 and skin material 13 . In addition, in this embodiment, the case where the cushioning pad is used as the pad main body 12 is described, but the present invention can also be applied to a back pad supporting the passenger's back, and the same effect can be obtained in the back pad.

The pad main body 12 is a cushion pad formed of an elastic foamed molded body such as soft polyurethane foam, and includes: an occupant support portion 14 positioned in the center in the width direction to support the buttocks and thighs of an occupant; side portions 16, 16, which is formed in a raised shape upward on the left and right sides of the passenger support portion 14.

In order to lock the skin material 13 covering the gasket body 12, a pair of front and rear transverse grooves 24 extending along the width direction X and a pair of left and right grooves extending along the front and rear direction Y are provided on the front (upper surface) of the gasket body 12. Right longitudinal groove 26. Therefore, the side portion 16 is formed on the outer side in the width direction than the pair of longitudinal grooves 26 , which are divided to form the passenger support portion 14 for supporting the passenger. In the passenger support part 14, the lower buttock part 18 that mainly supports the buttocks of the passenger is formed by dividing between the front and rear pair of lateral grooves 24, and the legs that mainly support the thighs of the passenger are formed by dividing the front of the front lateral groove 24. Receiving part 20.

On the front of the lower hip part 18 and the leg receiving part 20 that constitute the passenger support part 14, a plurality of grooves 28 extending along the width direction X are provided. The plurality of grooves 28 are not connected to each other, but In the plan, the front and rear directions Y) are arranged side by side at a certain interval.

Specifically, the deeper the plurality of grooves 28 are recessed on the surface provided with the grooves 28 (that is, the front of the lower buttock portion 18 and the leg receiving portion 20), the more they are inclined in the direction toward the front Y1, and the plurality of grooves The groove 28 is inclined and recessed in the direction (front-rear direction) Y in which the grooves 28 are arranged.

Due to the plurality of grooves 28 provided as described above, on the front of the buttocks lower part 18 and the leg receiving part 20, a plurality of ridges 32 are arranged side by side along the front-rear direction Y and are vertically inclined toward the rear Y2 as they go upward.

In addition, the angle θ of the direction in which the groove 28 is recessed with respect to the surface on which the groove 28 is provided can be set within a range of, for example, 5° to 85°.

In the present embodiment, the groove width W and depth H of the groove 28 provided on the front surface of the lower buttock portion 18 and the leg receiving portion 20 are set to be approximately the same in the width direction X of the pad main body 12 (see FIGS. 2 and 3 ). . In addition, the groove 28 is separated from the longitudinal groove 26 extending in the front-rear direction Y by the connecting portions 30 provided at both ends in the width direction of the lower buttock portion 18 and the leg receiving portion 20, and the ends of the groove 28 at both ends in the width direction X There is a space between them and the vertical groove 26 (see FIGS. 1 and 3 ). As a result, both ends in the width direction of the plurality of ridges 32 provided on the lower buttock portion 18 and the leg receiving portion 20 are connected by the connection portion 30 .

To manufacture the seat pad 10 described above, for example, foam molding may be performed using a foam molding mold 50 as shown in FIG. 4 .

The foam molding die 50 includes a lower mold 52 which forms the front side of the cushion and opens upward, and an upper mold 54 which molds the back side of the cushion. The upper mold 54 can rotate relative to the lower mold 52 through the hinge 56 arranged on one side of the lower mold 52, and forms a cushion shape between the upper mold 54 and the lower mold 52 by opening and closing the upper surface opening of the lower mold 52. The corresponding cavity 58 is the foaming space.

In the lower die 52, the top hanging groove protruding lines 60 for forming the transverse grooves 24 and the vertical grooves 26 are provided. A groove-forming protrusion 62 for forming the groove 28 is provided at a corresponding position. The groove forming ridges 62 are formed in a plate shape and are inclined toward the front Y1 of the gasket main body 12 as they go upward from the die surface of the lower die 52 , and are provided at intervals in the front-rear direction Y.

Using such a foam molding mold 50 , the foaming stock solution is injected into the lower mold 52 by an injection device (not shown), and the molds are closed as shown in FIG. Next, after the cushion body 12 is foam-molded, the upper mold 54 is opened, and the cushion body 12 is obtained through demoulding. The seat pad 10 is obtained by locking the surface material 13 covering the pad surface with the lateral groove 24 and the vertical groove 26 in the obtained pad main body 12 .

In the seat pad 10 of this embodiment formed as described above, since the plurality of grooves 28 arranged side by side on the front surface of the pad main body 12 are inclined and depressed in the parallel direction of the grooves, it is formed in the plurality of grooves when riding. The plurality of ribs 32 between 28 can be bent and deformed in a fallen manner, which can improve the soft feeling when riding.

In addition, since the plurality of grooves 28 provided on the gasket main body 12 are arranged side by side at intervals, the groove forming protrusions 62 forming the grooves 28 are arranged at intervals in the front-rear direction Y of the mold surface of the lower mold 52 . , the space surrounded by the groove-forming ridges 62 extends continuously in the width direction without branching. Therefore, when the gasket main body 12 is foam-molded, the foaming stock solution easily flows between the groove-forming ribs 62 , so that underfilling due to poor liquid flow is less likely to occur, and the molding characteristics can be improved.

In addition, in the seat pad 10 of the present embodiment, since the both ends in the width direction of the plurality of ridges 32 formed by the plurality of grooves 28 are connected by the connecting portion 30, it is possible to hold the lower buttock portion 18 and the leg receiving portion. While the central part in the width direction of the 20 is soft, the rigidity of the side parts is increased, and while a good soft feeling is obtained during riding, the passenger's body can be reliably supported from the side after riding.

In addition, in the seat pad 10 of the present embodiment, since the deeper the plurality of grooves 28 are, the more inclined they are in the direction toward the front Y1, and the ridges 32 formed between the grooves 28 are more upward. Since it protrudes obliquely toward the rear Y2, the raised rib 32 falls toward the rear Y2 when riding, and guides a passenger who always sits on the front of the cushion toward the rear Y2, thereby guiding the passenger to a desired seating position.

(second embodiment)

Hereinafter, a second embodiment of the present invention will be described with reference to FIG. 5 .

In the seat pad 10 according to the first embodiment described above, the case where the depth H of the groove 28 provided on the passenger support portion 14 is set to be substantially uniform in the width direction X of the pad main body 12 has been described. In the seat pad 10A of the present embodiment, the depth of the groove 28a increases as it gets closer to the center in the width direction, and the depth of the center in the width direction of the groove 28a is deeper than that at both ends in the width direction.

In the seat pad 10A according to the present embodiment, the upwardly protruding dimension of the ridge 32a at the central portion in the width direction may be set larger than the upwardly protruding dimension of the ridge 32a at both ends in the width direction. In this way, the rigidity of both sides can be improved while maintaining softness in the central part of the width direction of the lower buttocks 18 and the leg receiving part 20. While obtaining a good soft feeling when riding, the passenger can be reliably supported from the side after riding. body of.

In addition, since the other structures, functions and effects are the same as those of the first embodiment, descriptions thereof are omitted.

(third embodiment)

Hereinafter, a third embodiment of the present invention will be described with reference to FIGS. 6 and 7 .

In the above-mentioned seat pad 10 of the first embodiment, the case where the groove width W of the groove 28 provided on the passenger support portion 14 is set to be substantially uniform in the width direction X of the pad main body 12 has been described. , but in this embodiment, in the seat pad 10B shown in FIG. 6 and the seat pad 10C shown in FIG. The groove width of the grooves 28b, 28c is wider in the width direction central portion than in the width direction both end portions.

In the seat pads 10B, 10C of the present embodiment described above, since the thickness dimension of the protruding lines 32b, 32c formed by the plurality of grooves 28b, 28c in the front-rear direction Y at the central portion in the width direction is larger than that in the width direction two The thickness dimension in the front-rear direction Y of the end portion is small, so the rigidity of the side portions can be increased while maintaining the softness of the central portion in the width direction of the lower buttock portion 18 and the leg receiving portion 20, and while obtaining a good soft feeling when riding, It can reliably support the passenger's body from the side after riding.

In addition, since other structures, operations and effects are the same as those of the first embodiment, explanations are omitted.

(fourth embodiment)

Next, a fourth embodiment of the present invention will be described with reference to FIG. 8 .

In the seat pad 10 of the above-mentioned first embodiment, the groove 28 provided on the passenger support portion 14 is connected to the groove 28 provided at both ends in the width direction of the buttock portion 18 and the leg receiving portion 20 . The longitudinal groove 26 extending in the front-rear direction Y is separated, and the case where there is a gap between the ends of the groove 28 in the width direction X and the longitudinal groove 26 has been described. The end of the groove 28d communicates with the longitudinal groove 26 .

In the seat pad 10D of the present embodiment described above, both ends in the width direction of the groove 28d communicate with the longitudinal groove 26, and both ends in the width direction of the plurality of ridges 32d formed by the groove 28d are not connected to each other. , so the rib 32d is more likely to fall down when riding, thereby improving the soft feeling when riding.

In addition, in this embodiment, the groove 28d provided on the lower buttock part 18 communicates with the longitudinal groove 26 and the groove 28 provided on the leg receiving part 20 is separated from the longitudinal groove 26 by the connecting part 30. The lower buttock part 18 The case of being softer than the leg receiving portion 20 was described, but not only the buttocks 18 but also the groove 28 provided in the leg receiving portion 20 may communicate with the vertical groove 26 .

In addition, since the other structures, functions and effects are the same as those of the first embodiment, descriptions thereof are omitted.

(fifth embodiment)

Hereinafter, a fifth embodiment of the present invention will be described with reference to FIG. 9 .

In the seat pad 10 of the first embodiment described above, the case where the grooves 28 are provided on the front surface of the passenger support portion 14 has been described, but in this embodiment, the grooves 28 are provided on the front and rear surfaces of the passenger support portion 14 .

As shown in detail in FIG. 9 , in the seat pad 10E of the present embodiment, a plurality of grooves 28 extending in the width direction X are provided on the front surfaces of the buttock lower part 18 and the leg receiving part 20 constituting the passenger support part 14 , Meanwhile, a plurality of grooves 28e extending in the width direction X are also provided on the back surface.

The grooves 28 e provided on the rear surfaces of the lower buttock portion 18 and the leg receiving portion 20 are provided at positions in contact with the support frame 34 that supports the seat pad 10 . The grooves 28e, like the grooves 28a provided on the front, are arranged side by side in the front-rear direction Y, and are inclined and recessed in the front-rear direction Y with respect to the backside of the lower buttock part 18 and the leg receiving part 20 where the grooves 28e are provided.

In the seat pad 10E of the present embodiment described above, since the grooves 28, 28e are provided on the front and back sides of the passenger support portion 14, the grooves 28 provided on the front side and the grooves 28e provided on the back side both when seated. It can be deformed in the way of falling down, which can further improve the soft feeling when riding.

In addition, the grooves 28, 28e are provided on the front and back sides of the passenger support portion 14, and the depressions of the grooves 28, 28e required to obtain the same degree of flexibility can be compared with the case where the grooves are provided only on one of the front and back sides. The amount can be reduced, and thus the protruding amount of the ridges 32, 32e formed by the grooves 28, 28e is also reduced, so that the formability and durability of the pad main body 12 can be improved.

(other implementations)

In each of the above-mentioned embodiments, the case where the cushioning pad supporting the passenger's buttocks is used as the pad main body 12 provided with the groove 28 has been described, but the present invention can also be applied to a back pad constituting a backrest portion supporting the passenger's back. pad. In this case, the groove provided on the back pad may be deeper than the groove provided on the cushion pad.

In addition, in the above-mentioned embodiment, the case where the plurality of grooves 28 extending in the width direction X are arranged side by side at intervals in the front-rear direction Y has been described, but the present invention is not limited thereto. The plurality of grooves 28 extending in the front-rear direction Y are arranged side by side at intervals in the width direction X. As shown in FIG.

In addition, in the above-mentioned embodiment, the case where the widthwise end portions of the plurality of ridges 32 formed by the grooves 28 are connected by the connecting portion 30 has been described, but in the present invention, adjacent ridges may be connected. The connecting portion of the bar 32 is provided at a desired position in the extending direction of the convex bar 32 . By changing the position of the coupling portion in this way, it is possible to adjust the rigidity of the protrusion 32 at a desired position in the extending direction.

In addition, although not enumerating them all, various changes can be made without departing from the gist of the present invention.

Explanation of reference signs

10…seat pad

12…Padded body

13…Surface material

14...Passenger support

16...side

18…Lower buttocks

20…Leg receiving part

24...horizontal groove

26…longitudinal groove

28…groove

30...connecting part

32…Convex

Claims (8)

1. A seat pad for a vehicle, comprising a pad main body formed of a foamed resin molded body, wherein the pad main body has a pair of front and rear transverse grooves for locking the covering pad The skin material of the main body is provided and extends in the width direction; a pair of left and right longitudinal grooves, which extend in the front-rear direction; a passenger support portion, which is divided between a pair of the longitudinal grooves, for supporting a passenger; grooves, which On at least one of the front side and the back side of the passenger support part, a plurality of grooves are arranged side by side, and the grooves are inclined in the direction in which the grooves are arranged side by side with respect to the surface of the passenger support part on which the grooves are arranged. and dented. 2 . The vehicle seat pad according to claim 1 , wherein the groove is provided along the width direction of the front surface of the pad main body, and the depth of the groove increases toward the central portion in the width direction. 3 . 3. The vehicle seat pad according to claim 1 or 2, wherein the groove is provided along the width direction of the front surface of the pad main body, and the width of the groove becomes wider as it gets closer to the central portion in the width direction. width. 4. The vehicle seat cushion according to claim 1 or 2, wherein the longitudinal groove is located on the front surface of the cushion main body, and the groove is arranged along the width direction of the front surface of the cushion main body, The ends of the grooves are spaced from the longitudinal grooves. 5. The vehicle seat cushion according to claim 1 or 2, wherein the longitudinal groove is located on the front surface of the cushion main body, and the groove is provided along the width direction of the front surface of the cushion main body , the end of the groove communicates with the longitudinal groove. 6. The vehicle seat cushion according to claim 1 or 2, wherein the groove is provided in the width direction of the front surface of the passenger support portion of the cushion main body, and the depth of the groove is deeper than that of the passenger support portion. Deeper, more sloping and concave toward the front. 7. The vehicle seat pad according to claim 1 or 2, wherein the pad main body includes a cushion pad for supporting the passenger's buttocks and a back pad for supporting the passenger's back, and is provided on the back pad. The groove of the passenger support portion is recessed deeper than the groove of the passenger support portion provided to the cushion pad. 8. The seat pad for a vehicle according to claim 1 or 2, wherein the grooves are provided on the front and rear surfaces of the pad main body.