JP2021017152A - Vehicle seat - Google Patents

Abstract

To lock a hanger for locking a seat cover on a locking part while being positioned in a depth direction of a groove part.SOLUTION: A groove part 13 includes general portions (31, 33 and the like) where locking tools 20 are fixed; and padding portions (41-44 and the like) having bottoms shallower than those of the general portions (31, 33 and the like) and projecting toward the surface side of a seat pad 6P. Either one portion of the general portions (31, 33 and the like) and the padding portions (41-44 and the like) is formed in a state of being sandwiched by the other portion opposite to the one in an extending direction of the groove part 13. A hanger 60 attached to a seat cover 6S is locked to a locking tool 20 in a condition of being pushed to the padding portions (41-44 and the like) from the depth direction of the groove part 13.SELECTED DRAWING: Figure 8

Description

The present invention relates to a vehicle seat in which a part of the seat cover is locked while being pulled into the groove of the seat pad.

This type of vehicle seat has a seat pad that has an outer shape of the seat and can elastically support the occupant, and a seat cover that covers the seat pad, and a part of the seat cover is engaged in the groove portion of the seat pad. It has been stopped. For example, in the vehicle seat disclosed in Patent Document 1, a hanging groove portion is provided on the seating surface of the seat pad so as to form an H shape when viewed from the front. Locking clips corresponding to the locking portions of the present invention are fixed to the bottom of the hanging groove portion at appropriate intervals, and positioning protrusions protrude from both ends of the hanging groove portion in the extending direction. Is formed. Further, the seat cover is formed by suturing a plurality of skin pieces, and suspenders corresponding to the hanging tool of the present invention are co-sewn at the suture points (part of the seat cover) between adjacent skin pieces. .. This suspender is a strip-shaped member that is long in the direction along the hanging groove portion, and has a length dimension that fits between the positioning protrusions provided at both ends of the hanging groove portion. A resin columnar body is integrated with the tip of the suspender, and the columnar body is formed in an arrowhead shape that can be locked to the locking clip.

In a vehicle seat of a known technique, the seat pad is covered with a seat cover, and the sutured portion between the skin pieces is pulled into the hanging groove portion and locked to the bottom side. At this time, the suture points between the skin pieces are locked in a state of being pulled into the bottom side of the hanging groove portion by engaging the suspenders co-sewn at the tip thereof with the locking clip. Then, in a known technique, the end portion of the suspender in the elongated direction is made to interfere with the corresponding positioning convex portion of the suspension groove portion so that the suspender does not shift in the extending direction of the suspension groove portion. In this way, the seat cover constitutes the design surface of the seat, and the stitched portion between the skin pieces appears as a seam (design line) on the design surface, and constitutes a part of the design of the seat.

Japanese Patent No. 6292100

By the way, in the above configuration, care should be taken so that the design line of the seat cover does not meander from the viewpoint of ensuring the design of the seat. For example, one of the causes of the meandering of the design line is that the suspenders (hanging tools) fall into the deep part of the hanging groove and are partially tilted. It is known that the deep bottom portion of the hanging groove portion is formed by a meat chipping or the like during sheet pad molding, and this kind of meat chipping occurs at an appropriate position such as the end side of the groove portion, for example, between the groove portions. It may occur at the intersection (corner) of. Therefore, in the above configuration, it is desirable to determine the position of the suspenders in the depth direction of the suspension groove so that the suspenders do not partially fall. However, in the configuration of the known technique, although the suspenders are positioned in the extending direction of the hanging groove portion, the suspenders are not positioned in the depth direction of the groove portion. The present invention has been devised in view of the above points, and the problem to be solved by the present invention is to position the hanging tool for locking the seat cover in the depth direction of the groove and engage with the locking portion. It is to stop.

As a means for solving the above problems, the vehicle seat of the first invention has a seat pad forming the outer shape of the seat, a seat cover covering the surface of the seat pad, and a groove portion provided on the seat pad and extending in a predetermined direction. And a plate-shaped or band-shaped hanger that is attached to a part of the seat cover and is long in the extension direction of the groove. Then, a part of the seat cover is pulled into the groove, and the hanging tool is locked to the locking tool fixed to the bottom side of the groove. In this type of configuration, it is desirable that the hanging tool for locking the seat cover is locked to the locking portion while being positioned in the depth direction of the groove portion.

Therefore, the groove portion of the present invention has a general portion to which the locking tool is fixed and a raised portion which is shallower than the general portion and protrudes toward the surface side of the seat pad. One of the raised portions is formed in a state of being sandwiched between the other portions opposite to the one in the extending direction of the groove portion. The hanging tool is locked to the locking tool in a state of being pressed against the raised portion from the depth direction of the groove portion. In the groove portion of the present invention, a general portion having a relatively deep bottom and a raised portion having a relatively shallow bottom are provided. Then, in the groove portion, a raised portion is formed between the general portions, or a general portion is formed between the raised portions. With such a configuration, since the hanging tool is locked to the locking tool in a state of being lifted at the raised portion in the groove portion, the position in the depth direction of the groove portion is determined not by the general portion but by the raised portion. Is in the specified state. In this way, in the present invention, by determining the position of the hanging tool at the raised portion, the inclination of the hanging tool can be prevented as much as possible even if an unintended deep bottom portion is formed in the groove portion.

The vehicle seat of the second invention is the vehicle seat of the first invention, in which the locking tool is a fixing portion fixed to the bottom of the groove portion and a locking portion protruding from the fixing portion toward the surface side of the seat pad. It has a claw part. The hanging tool is locked to the locking claw portion in a state of being urged away from the fixed portion by an elastic repulsive force from the raised portion. In the present invention, the hanging tool locked to the locking claw portion is separated from the fixed portion by the elastic repulsive force (urging force) of the raised portion, so that the hanging tool and the fixing portion are different due to contact. It is possible to prevent the generation of sound as much as possible.

The vehicle seat of the third invention is the vehicle seat of the first invention or the second invention, and the raised portion is continuously formed so as to fill the space between general portions in the extending direction of the groove portion. In the present invention, the position of the hanging tool in the groove can be more stably determined by the raised portion continuously formed between the general portions.

The vehicle seat of the fourth invention is the vehicle seat of any one of the first to third inventions, in which a raised portion is provided at the end of the groove portion. In the present invention, in a general seat pad, attention is paid to the fact that a deep bottom portion is likely to occur at the end portion of the groove portion due to a lack of meat or the like, and a raised portion is provided at the end portion of the groove portion. Therefore, in the present invention, the raised portion provided at the end of the groove can more reliably prevent the unintended inclination of the hanging tool.

The vehicle seat of the fifth invention is the vehicle seat of any one of the first to fourth inventions, and the seat pad is a first pad portion and a second pad portion having different physical characteristics from the first pad portion. It is a molded product consisting of. The seat pad of the present invention is provided with pad portions having different physical properties in order to improve its performance, but when molding this seat pad, there is a lack of meat at a place where different molding materials intersect (for example, near the end of a groove). There is concern that it will occur. Therefore, in the present invention, by determining the position of the hanging tool at the raised portion, it is possible to prevent the hanging tool from tilting as much as possible even if an unintended deep bottom portion is formed in the groove portion.

According to the first invention according to the present invention, the hanging tool for locking the seat cover can be locked to the locking portion while positioning in the depth direction of the groove portion. Further, according to the second invention, the hanging tool for locking the seat cover can be locked to the locking portion with good performance. Further, according to the third invention, the hanging tool for locking the seat cover can be stably positioned in the depth direction of the groove portion. Further, according to the fourth invention, the hanging tool for locking the seat cover can be reliably positioned in the depth direction of the groove portion. Then, according to the fifth invention, while improving the performance of the seat pad, the hanging tool for locking the seat cover can be locked to the locking portion while positioning in the depth direction of the groove portion.

It is a perspective view of a vehicle seat. It is a front view of a seat pad. It is a front view of each groove part. FIG. 2 is a sectional view taken along line IV-IV of FIG. It is a perspective view of a hanging tool and a locking tool. It is a perspective view of a seat cover. It is sectional drawing of the seat cover and a seat pad at the time of covering work. It is sectional drawing of the seat cover and a seat pad after the covering work. It is sectional drawing of the seat back corresponding to the IX-IX line cross section of FIG. 1 and FIG. It is sectional drawing of the seat back corresponding to the X-ray cross section of FIG.

Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS. 1 to 10. In each figure, for convenience, arrow lines indicating the front-rear direction, the left-right direction, and the up-down direction of the vehicle seat are appropriately illustrated. Although the seat pad and the seat cover are shown separately in FIGS. 9 and 10, the seat cover is actually in close contact with the surface of the seat pad.

The vehicle seat 2 of FIG. 1 has a seat cushion 4, a seat back 6, and a headrest 8. These seat constituent members (4, 6, 8) cover the seat frame (4F, 6F, 8F) forming the seat skeleton, the seat pad (4P, 6P, 8P) forming the outer shape of the seat, and the seat pad, respectively. It has a seat cover (4S, 6S, 8S). A lower portion of the seat back 6 is foldably connected to the rear portion of the seat cushion 4, and a headrest 8 is arranged above the upright seat back 6 (details will be described later).

[Seat back]
The seat back 6 shown in FIG. 1 is a member that is substantially rectangular in front view as a backrest of an occupant, and together with the above basic configurations 6F, 6P, 6S, with reference to FIGS. 2 to 6, a plurality of groove portions 10 to 10 It has 15, a plurality of locking tools 20, and a plurality of hanging tools 60. Then, in the seat back 6, the seat pad 6P is covered with the seat cover 6S as shown in FIG. Further, from the viewpoint of improving the design, a part of the seat cover 6S (sewn portion 50 or the like between the skin pieces described later) is drawn into each groove portion 13 or the like of the seat pad 6P. That is, a hanging tool 60 is attached to a part (50 or the like) of the seat cover 6S, and the hanging tool 60 is locked to the corresponding locking tool 20 in the groove portion (13 or the like) of the seat pad 6P. ..

Then, on the design surface of the seat cover 6S shown in FIG. 1, the stitched portion 50 or the like between the skin pieces appears as a seam (design line DL). At this time, care should be taken so that the design line DL does not meander as much as possible. Is. For example, one of the causes of the meandering of the design line DL is that the position of the hanging tool 60 in the groove portion (13, etc.) shown in FIG. 9 in the depth direction is not determined, and the hanging tool 60 is partially tilted. Therefore, in this embodiment, in each groove portion (general portion 31 to 33 etc., raised portion 41 to 44 etc.) of FIG. 3 to be described later, the hanging tool 60 for locking the seat cover 6S is attached to the depth of the groove portion 13 etc. It was decided to lock the locking tool 20 while positioning in the direction. Hereinafter, each configuration will be described in detail.

[Basic configuration]
In the seat back 6, the seat pad 6P is supported by the seat frame 6F (not shown) with reference to FIGS. 1 and 2. Here, the seat frame 6F is typically a substantially rectangular or arch-shaped frame in front view, and can be formed of a material having excellent rigidity such as metal or hard resin. The seat pad 6P is a member that forms the outer shape (seat outer shape) of the seat back 6 and can elastically support the occupant. The seating surface, which is the front surface of the seat pad 6P, includes a top plate main portion 6a, a top plate side portion 6b on the right side, a top plate side portion 6c on the left side, and a plurality of groove portions 10 to 15 described later. It is formed (in FIG. 1, for convenience, a grid-like hatch is attached only to the top plate main portion, and in FIG. 2, the top plate main portion and the top plate side portion are roughly separated by a dashed line. ). The top plate main portion 6a is a central portion of the seat back 6 in the seat width direction, and extends in the vertical direction of the seat with an appropriate dimension in the seat width direction. Further, on the right side and the left side of the top plate main portion 6a, respectively, top plate side portions 6b and 6c protruding forward from the top plate main portion 6a are provided. A partition groove 9a (9b) is provided between the upper portion of the top plate side portion 6b on the right side (top plate side portion 6c on the left side) and the top plate main portion 6a, and each partition groove 9a (9b) is shown in the figure. It is a trace of the molding partition wall of the seat pad.

[Seat pad material]
Here, the seat pad 6P shown in FIG. 2 can be formed of a material that can elastically support the occupant, and in this embodiment, it has two types of pad portions 61P and 62P having different physical characteristics (molding method). Will be described later). That is, in the seat pad 6P, the top plate main portion 6a is formed by the relatively soft first pad portion 61P, and the first pad portion 61P is made of polyurethane foam (density: 10 kg / m ^{3 to} 60 kg / m ³ ). It can be formed of foamed resin such as. By forming the top plate main portion 6a at the first pad portion 61P and making it relatively soft in this way, it is possible to improve the seating property for the occupant. Further, in the upper part of each top plate side portion 6b (6c), the inside of the corresponding partition groove 9a (9b) is formed by the first pad portion 61P, and the outside and the lower part of the corresponding partition groove 9a (9b) are relative. It is formed of a hard second pad portion 62P (in FIG. 2, for convenience, a hatch is attached to the second pad portion to distinguish it from the first pad portion). That is, in each top plate side portion 6b (6c), the upper inner side thereof is softened, and the outer side and the lower side are formed by the relatively hard second pad portion 62P to improve the supportability to the occupant. Therefore, when the occupant's upper body is pressed against one of the top plate side portions 6b (6c) when traveling on a curve or the like, the occupant's upper body is held so as to be wrapped inside the upper part of the top plate side portion 6b (6c). It can be supported on the relatively hard outer and lower parts.

[Groove]
Then, referring to FIGS. 2 and 3, the seating surface to be the surface of the seat pad 6P has a pair of upper and lower horizontal groove portions 10 and 11, a pair of left and right upper vertical groove portions 12 and 13, and a pair of left and right lower vertical groove portions. 14 and 15 are provided. Each of these groove portions 10 to 15 is a recessed portion of the seat pad 6P extending in a predetermined direction with a predetermined width dimension, and a corresponding part of the seat cover 6S described later can be retracted and arranged. Here, the pair of upper and lower horizontal groove portions (lower horizontal groove portion 10, upper horizontal groove portion 11) are groove portions extending in the left-right direction on the seating surface of the seat pad 6P, respectively. The lower horizontal groove portion 10 is a relatively long groove portion formed on the lower side of the seating surface of the seat pad 6P so as to cross the top plate main portion 6a and the left and right top plate side portions 6b and 6c. It is extending. The right side (left side) of the lower lateral groove portion 10 is gradually inclined upward while crossing the corresponding top plate side portion 6b (6c). The upper horizontal groove portion 11 is a relatively short groove portion formed on the upper side of the lower horizontal groove portion 10, and extends so as to cross the top plate main portion 6a. The right side (left side) of the upper horizontal groove portion 11 communicates with the upper right vertical groove portion 12 (upper left vertical groove portion 13) described later.

Further, the pair of left and right upper vertical grooves (upper right vertical groove 12, upper left vertical groove 13) shown in FIGS. 2 and 3 are grooves extending vertically on the upper side of the lower horizontal groove 10, and are symmetrical with respect to the top plate main portion 6a. It is formed to be. That is, the upper right vertical groove portion 12 extends in the vertical direction on the right side of the top plate main portion 6a, and the upper side is generally straight, but the lower side is gradually curved inward (left side in each figure). Further, the upper left vertical groove portion 13 extends in the vertical direction on the left side of the top plate main portion 6a, and the upper side is generally straight, but the lower side is gradually curved inward (right side in each figure). The left and right ends of the above-mentioned upper horizontal groove portion 11 communicate with each other between the upper right vertical groove portion 12 and the upper left lower portion of the upper left vertical groove portion 13. Further, the lower right portion of the upper right vertical groove portion 12 and the lower end portion of the upper left vertical groove portion 13 communicate with the lower horizontal groove portion 10 portion that substantially linearly crosses the top plate main portion 6a.

Further, the pair of left and right lower vertical groove portions (lower right vertical groove portion 14, lower left vertical groove portion 15) shown in FIGS. 2 and 3 are groove portions extending vertically below the lower horizontal groove portion 10. Each of the lower vertical groove portions 14 (15) is formed so as to be symmetrical between the top plate main portion 6a and the top plate side portions 6b (6c). That is, the lower right vertical groove portion 14 extends in the vertical direction between the top plate main portion 6a and the right top plate side portion 6b, and the lower left vertical groove portion 15 is the top plate main portion 6a and the left top plate side portion 6c. It extends vertically between them. The upper end of the lower right vertical groove portion 14 (lower left vertical groove portion 15) communicates with the lower horizontal groove portion 10 portion between the top plate main portion 6a and each top plate side portion 6b (6c).

[Locking tool]
Here, with reference to FIGS. 3 and 4, a plurality of locking tools 20 for locking the hanging tools 60, which will be described later, are fixed to the groove portions 10 to 15 (in each drawing, for convenience, each engaging tool 20 is fixed. A common reference numeral 20 is attached to the stopper). Here, since each locking tool 20 has substantially the same basic configuration, the details thereof will be described below by taking one locking tool 20 of the upper left vertical groove portion 13 as an example. Each locking tool 20 shown in FIG. 5 has a fixing portion 21, a first locking claw portion 22, and a second locking claw portion 25, and is an integrally molded product made of resin in this embodiment. The fixing portion 21 is a substantially rectangular plate material that is vertically long in the front view, and is fixed to the bottom side of the upper left vertical groove portion 13 as shown in FIG. Most of the front surface of the fixed portion 21 in the fixed state is exposed in the upper left vertical groove portion 13, and the first locking claw portion 22 and the second locking claw described later are exposed on the exposed front surface of the fixed portion 21. A portion 25 is provided. A protruding piece 21a is provided at an appropriate position near the peripheral edge of the fixing portion 21, and the protruding piece 21a is embedded in the seat pad 6P as shown in FIG. 9 to improve stability.

Further, since the first locking claw portion 22 and the second locking claw portion 25 shown in FIGS. 4 and 5 have substantially the same basic configuration, the details thereof will be described below by taking the first locking claw portion 22 as an example. .. The first locking claw portion 22 shown in FIG. 5 is composed of a pair of left and right locking pieces 23, 24 protruding forward from the fixing portion 21, and is provided on the upper front surface of the fixing portion 21. Each of the locking pieces 23 and 24 is arranged so as to form a substantially horizontal C shape with the front open in a cross-sectional view, and can be bent and deformed in a direction away from each other. At the tip of each locking piece 23 (24), a return piece 23a (24a) for preventing the hanging tool 60, which will be described later, is integrated so as to form a T-shaped cross section, and each return piece 23a (24a) is integrated. ) Gradually tilts backward as it goes inward. The second locking claw portion 25 is also composed of a pair of left and right locking pieces 26, 27 (separate return pieces 26a, 27a), and is provided on the lower front side of the fixing portion 21.

[General part]
In each of the groove portions 10 to 15 shown in FIG. 3, general portions 31 to 33, 30x and raised portions 41 to 44, 40x are formed, respectively (in FIG. 3, specific reference numerals 31 to 31 are formed in specific general portions. 33 is attached, the other general parts are given the common reference numeral 30x, the specific raised parts are given the specific reference numerals 41 to 44, and the other raised parts are given the common reference numeral 40x). The basic configuration of each general portion 31 to 33, 30x and the basic configuration of each raised portion 41 to 44, 40x are substantially the same in each groove portion 10 to 15. Therefore, the details of the specific general parts 31 to 33 and the raised parts 41 to 44 will be described below with the upper left vertical groove portion 13 as an example. In the upper left vertical groove portion 13 shown in FIG. 4, an upper general portion 31, a middle general portion 32, and a lower general portion 33 are provided in this order from top to bottom (the arrangement relationship between the general portion and the raised portion will be described later). .. Locking tools 20 are fixed to the bottom BS side of each of the general parts 31 to 33, and with reference to FIGS. 4 and 5, the upper and lower dimensions of each of the general parts 31 to 33 are approximately the locking tools 20. It matches the size of the fixed portion 21 of. Further, the depth dimension D1 of each of the general parts 31 to 33 is substantially the same, and is larger (the bottom depth) than the raised parts 41 to 44 described later. The depth dimension D1 of each of the general parts 31 to 33 can be defined by the dimension from the opening 130 of the upper left vertical groove portion 13 provided on the front side to the bottom BS.

[Raised part]
Further, in the upper left vertical groove portion 13 shown in FIG. 4, an upper end raising portion 41, an upper raising portion 42, a lower raising portion 43, and a lower end raising portion 44 are provided in this order from top to bottom. (The arrangement relationship between the general part and the raised part will be described later). Each of these raised portions 41 to 44 is a groove portion portion that rises toward the seating surface side, which is the surface of the seat pad 6P. That is, each of the raised portions 41 to 44 of this embodiment has a substantially rectangular shape in a vertical cross-sectional view and protrudes from the bottom BS side of the upper left vertical groove portion 13 to the seating surface side, and the corresponding general portions 31 are described later. It is arranged adjacent to ~ 33. Further, the front end surface TS of each of the raised portions 41 to 44 is formed to be substantially flat and extended in the vertical direction, and is formed so as to be substantially parallel to the bottom BS of each of the general portions 31 to 33. There is. The depth dimension D2 of each raised portion 41 to 44 can be defined by the dimension from the opening 130 of the upper left vertical groove portion 13 to the tip surface TS, and is smaller than the depth dimension D1 of each general portion 31 to 33 (shallow bottom). Has been done.

[Arrangement relationship between general parts and raised parts]
In the upper left vertical groove portion 13 shown in FIG. 4, each general portion 31 to 33 is formed in a state of being sandwiched between the corresponding raised portions 41 to 44 in the vertical direction in which the upper left vertical groove portion 13 extends. For example, the upper general portion 31 is arranged above the upper left vertical groove portion 13. Further, the general portion 31 is sandwiched between the upper end raised portion 41 arranged at the upper end of the upper left vertical groove portion 13 and the upper raised portion 42. Further, the middle general portion 32 is arranged between the upper portion and the lower portion of the upper left vertical groove portion 13 (communication position with the upper horizontal groove portion 11). The general portion 32 is sandwiched between the upper raised portion 42 and the lower raised portion 43. Further, the lower general portion 33 is arranged below the upper left vertical groove portion 13. The lower general portion 33 is sandwiched between the lower raised portion 43 and the lower end raised portion 44 arranged at the lower end of the upper left vertical groove portion 13.

In this embodiment, the upper raised portion 42 and the lower raised portion 43 are continuously formed so as to fill the space between the general portions 31 to 33 in the vertical direction in which the upper left vertical groove portion 13 extends. The vertical dimensions of the upper raised portion 42 and the lower raised portion 43 are set according to the separation distance between the corresponding general portions, and in this embodiment, the lower raised portion 43 is relatively It's getting bigger. Further, an upper end raised portion 41 and a lower end raised portion 44 are formed at the upper end portion and the lower end portion of the upper left vertical groove portion 13, and the upper and lower dimensions of these raised portions 41 and 44 are relatively narrow. Yes, in this embodiment, for example, the width dimension of the upper left vertical groove portion 13 is substantially the same.

[Seat pad formation method]
Here, referring to FIGS. 2 and 3, the seat pad 6P can be formed as a two-color molded product of the first pad portion 61P and the second pad portion 62P. For example, a plurality of injection ports are formed in a molding die (not shown) of the seat pad. Then, the molding material (urethane stock solution) of the first pad portion 61P is injected from a specific injection port, and the molding material (urethane stock solution) of the second pad portion 62P is injected from another injection port. At this time, by injecting two types of urethane stock solutions having different components from different injection ports, the first pad portion 61P and the second pad portion 62P having different hardness can be molded by one molding mold. By the way, in the above-mentioned molding of the seat pad, the urethane stock solution wraps around the convex portion (not shown) and the partition wall on which the groove portion of the molding mold should be formed and joins. At this time, the urethane stock solution should flow around the convex parts and the like smoothly, but if the flow of the urethane stock solution is obstructed for some reason, the urethane stock solution in the vicinity of the convex parts and the like may be insufficient. It tends to cause meat chipping in the groove. Then, such a thinning is likely to occur in the seat pad portion (6PX1) near the end of the groove or the seat pad portion (6PX2) near the corner where the grooves intersect, for example, referring to FIG. Become.

Therefore, in this embodiment, referring to FIG. 3, in consideration of the seat pad portions (6PX1, 6PX2), the raised portions (41, 44) are intentionally formed at the end portions of the groove portions (13). When forming such a raised portion (41, 44), the convex portion of the molding die is made relatively small. Therefore, in this embodiment, the urethane stock solution (particularly the two types of urethane stock solution used for two-color molding) wraps around the relatively small convex portion and flows smoothly, and the seat pad portion (particularly, the seat pad portion near the convex portion) ( It is possible to avoid a situation in which the urethane stock solution of 6PX1, 6PX2) is insufficient as much as possible. In this way, in this embodiment, attention is paid to the fact that in a general seat pad, a deep bottom portion is likely to occur at the end portion of the groove portion (13) due to a lack of meat or the like, and the end portion of the groove portion (13) is raised. Sites (41, 44) are provided. Therefore, it is possible to prevent the occurrence of meat chipping on the end side of the groove portion (13), which causes the inclination of the hanging tool (details will be described later), and the configuration contributes to the maintenance of product quality. The seat pad can be formed by various molding methods in addition to two-color molding. For example, as another example, the first pad portion 61P and the second pad portion 62P can be formed of different types of materials, and in this case, the seat pad can be formed by a method such as insert molding. When one pad portion is formed of polyurethane foam, the other pad portion can be formed of polystyrene foam, polypropylene foam, or the like.

[Seat Cover]
The seat cover 6S shown in FIG. 1 is a member that covers the surface including the seating surface of the seat pad 6P, and has a plurality of skin pieces SP1 to SP3 as shown in FIGS. 5 and 6, and adjacent skin pieces are adjacent to each other. (In each figure, for convenience, specific symbols SP1 to SP3 are attached to specific skin pieces, and the symbols of the other skin pieces are omitted). For example, the seating surface side of the seat cover 6S can be divided into a main skin piece SP1, a right side skin piece SP2, and a left side skin piece SP3. As the material of each of these skin pieces SP1 to SP3, a face material that can form the design surface of the sheet can be used. For example, leather (natural leather, synthetic leather) or cloth (woven fabric, knitted fabric, non-woven fabric) is appropriately selected. Can be used. The main skin piece SP1 is a seat cover portion that covers the top plate main portion 6a, and is formed by sewing the upper piece Sa, the middle piece Sb, and the lower piece Sc that are arranged vertically. The right side skin piece SP2 is a seat cover portion that covers the right side top plate side portion 6b, and is formed by sewing the upper right piece Sd and the lower right piece Se that are arranged vertically. The left side skin piece SP3 is a seat cover portion that covers the left side top plate side portion 6c, and is formed by suturing the upper left piece Sf and the lower left piece Sg that are arranged vertically.

Then, with reference to FIGS. 5 and 6, a hanging tool 60 (described in detail later) is attached to the suture points 50 and 50x between the adjacent skin pieces SP1 to SP3, and is engaged in a retractable shape in the corresponding groove. It can be stopped (in FIG. 6, a specific reference numeral 50 is attached to a specific stitched portion, and a common reference numeral 50x is attached to other stitched portions). For example, with reference to FIGS. 5 to 8, a hanger 60 is co-sewn to the institch ST in which both skin pieces are sewn at the upper stitched portion 50 of the main skin piece SP1 and the left side skin piece SP3. It is installed. The upper stitching portion 50 of the main skin piece SP1 and the left side skin piece SP3 is pulled into and locked in the upper left vertical groove portion 13 and the lower left vertical groove portion 15 shown in FIG.

Further, with reference to FIGS. 2 and 6, the hanging tool 60 is also attached to the other sutured portion 50x, and can be retractably locked in the corresponding groove portion. That is, the lower stitching portion 50x of the main skin piece SP1 and the left side skin piece SP3 is pulled into the lower left vertical groove portion 15 and locked. Further, the sutured portion 50x of the main skin piece SP1 and the right side skin piece SP2 is pulled into the upper right vertical groove portion 12 and the lower right vertical groove portion 14 and locked. Further, each stitched portion 50x of each piece Sa to Sc of the main skin piece SP1 is pulled into the lower lateral groove portion 10 and the upper lateral groove portion 11 and locked. Further, the stitched portion 50x of each piece Sd and Se of the right side skin piece SP2 is pulled into the right side of the lower lateral groove portion 10 and locked. Further, the sewn portion 50x of each piece Sf and Sg of the left side skin piece SP3 is pulled into the left side of the lower lateral groove portion 10 and locked.

[Hanging tool]
With reference to FIGS. 2 and 4 to 6, each hanging tool 60 is a member for locking the sewn portions 50 and 50x of the skin pieces SP1 to SP3 to the corresponding groove portions 10 to 15. Since each of these hanging tools 60 has substantially the same basic configuration, the details thereof will be described below by taking one hanging tool 60 as an example. With reference to FIGS. 5 to 8, the hanger 60 is attached to the sutured portion 50 of the main skin piece SP1 and the left side skin piece SP3. The hanger 60 is a member elongated in the vertical direction, which is an extension direction of the upper left vertical groove portion 13, and has a base portion 61 and a locking portion 62. The base portion 61 is a band-shaped or flat plate-shaped portion sewn to the sewn portion 50 by in-stitch ST, and is elongated up and down following the sewn portion 50. The material of the base 61 is not particularly limited, but the material or resin exemplified for the seat cover 6S can be used, and it is desirable to use a material having appropriate flexibility and strength (for example, non-woven fabric or resin). Further, as shown in FIG. 5, the locking portion 62 is a portion that is integrated and attached to the entire length of the tip of the base portion 61. The locking portion 62 has an arrowhead shape with the apex facing rearward in a cross-sectional view, and can be locked to the tip side of each of the locking claws 22 and 25 of the locking tool 20. The locking portion 62 is preferably a portion that is harder and more rigid than the base portion 61, and can be typically formed of a resin. The type of this type of resin is not particularly limited, but a resin having appropriate flexibility (including an elastomer) such as polyethylene or polypropylene may be used in consideration of followability when the sutured portion 50 is curved. desirable.

[Seat cover covering work]
With reference to FIGS. 1 to 3 and 6, the seat pad 6P is placed on a seat frame (not shown) and then covered with the seat cover 6S. At this time, the stitched portions 50 and 50x of the skin pieces SP1 to SP3 forming a part of the seat cover 6S are pulled into the corresponding groove portions 10 to 15 of the seat pad 6P. Then, the hanging tool 60 attached to the sutured portions 50 and 50x of the skin pieces SP1 to SP3 is locked to the locking tool 20 in the corresponding groove portions 10 to 15. Then, on the design surface of the seat cover 6S shown in FIG. 1, the stitched portion 50 or the like between the skin pieces appears as a seam (design line DL). In this type of seat configuration, care should be taken so that the suture points 50 and 50x forming the design line DL do not meander as much as possible. For example, the hanger 60 is partially tilted by falling into the deep bottom of the groove. It should be avoided as much as possible.

Therefore, as shown in FIG. 3, the groove portions 10 to 15 of the present embodiment are the general portions 31 to 33, 30x to which the locking tool 20 is fixed, and the seat pads are shallower than the general portions. It has 41 to 44, 40x of each raised portion that rises toward the surface side of 6P. Further, one of the general portions 31 to 33 and 30x and the raised portions 41 to 44 and 40x is formed in a state of being sandwiched between the other portions opposite to the one in the extending direction of the corresponding groove portions. Has been done. Then, referring to FIGS. 3 and 6, the hanging tool 60 is locked to the locking tool 20 in a state of being pressed against the raised portions 41 to 44, 40x from the depth direction of the groove portions 10 to 15. .. That is, in this embodiment, the position of the hanger 60 in the depth direction of each groove 10 to 15 is determined by locking the hanger 60 to the locking tool 20 while lifting the hanger 60 at each raised portion 41 to 44, 40x. I'm going to keep it. Therefore, the positioning method of the hanger 60 will be described in detail below, using the upper left vertical groove portion 13 as an example.

In the upper left vertical groove portion 13, referring to FIGS. 4, 7 and 8, the locking tool 20 of each of the general parts 31 to 33 is attached to the hanging tool 60 of the sutured portion 50 of the main skin piece SP1 and the left side skin piece SP3. To lock. That is, with reference to FIGS. 5 and 9, the locking portion 62 provided at the tip of the hanging tool 60 is engaged with the first locking claw portion 22 and the second locking claw portion 25 of each locking tool 20. It will be stopped. At this time, the locking portion 62 is sandwiched between the locking pieces 23, 24 (26, 27) of the locking claw portions 22 (25), and further, the return pieces 23a, 24a (26a, 27a) at the tip thereof. It is locked in a state of being separated forward from the fixing portion 21.

Further, in the upper left vertical groove portion 13 shown in FIG. 4, as described above, each of the general portions 31 to 33 is formed in a state of being sandwiched between the corresponding raised portions 41 to 44 in the vertical direction in which the upper left vertical groove portion 13 extends. Has been done. Then, referring to FIGS. 8 and 10, the locking portion 62 of the hanging tool 60 is pressed so as to slightly recess the tip surface TS of each raised portion 41 to 44, and the bottom of each general portion 31 to 33 is pressed. It will be in a state of being arranged in front of the BS. Therefore, the hanging tool 60 is locked to the locking tool 20 of each of the general parts 31 to 33 in a state of being lifted by the raised parts 41 to 44, and the position of the upper left vertical groove portion 13 in the depth direction is determined. It becomes. By determining the position of the hanging tool 60 in the depth direction at each raised portion 41 to 44 in this way, even if a deep bottom portion (not shown) is generated in the upper left vertical groove portion 13, this deep bottom portion is formed. The depression of the hanging tool 60 into the hanger 60 is prevented as much as possible. In particular, in this embodiment, since each raised portion 42 (43) is continuously formed so as to fill the space between the general portions 31, 32 (32, 33), the position of the hanger 60 in the depth direction is determined. It can be set stably. Then, each of the raised portions 41 to 44 against which the hanger 60 is pressed is elastically repelled, and the repulsive force (urging force) separates the locking portion 62 of the hanger 60 from the front of the fixing portion 21. It can be arranged like this. By separating the locking portion 62 and the fixing portion 21 of the hanger 60 by the repulsive force (urging force) of each of the raised portions 41 to 44 in this way, the generation of abnormal noise due to these contacts is prevented as much as possible. can do.

Here, with reference to FIGS. 2 and 3, in the seat pad 6P, there is a concern that meat chipping may occur in the vicinity of the ends (6PX1, 6PX2, etc.) of the groove portions 10 to 15, and in particular, two types of pad portions 61P, When 62P is provided, meat chipping is likely to occur. Therefore, in this embodiment, attention is paid to the fact that in a general seat pad, a deep bottom portion is likely to occur at the end portions of the groove portions 10 to 15 due to a lack of meat or the like, and a raised portion 41, at the end portion of the groove portion. 44 and the like are provided. For example, with reference to FIGS. 4 and 8, the upper end portion and the lower end portion of the upper left vertical groove portion 13 are provided with raised portions 41 and 44, respectively. Therefore, in this embodiment, even if meat chipping inevitably occurs at any end of the upper left vertical groove portion 13, each of the raised portions 41 to 44 (particularly, the raised portions 41 and 44 on the end side) causes the meat to be chipped. , The inclination of the hanging tool 60 can be prevented more reliably.

As described above, in each of the groove portions 10 to 15 of this embodiment, each general portion 31 to 33, 30x having a relatively deep bottom and each raised portion 41 to 44, 40x having a relatively shallow bottom are provided. Has been done. In each groove portion 10 to 15, each raised portion 41 to 44, 40x is formed between each general portion 31 to 33, 30x, or each general portion is formed between each raised portion 41 to 44, 40x. 31 to 33, 30x are formed. With such a configuration, the suspending tool 60 is locked to the locking tool 20 in a state of being lifted by the raised portions 41 to 44, 40x in each of the groove portions 10 to 15, and therefore, each general portion. The positions of the groove portions 10 to 15 in the depth direction are determined by the raised portions 41 to 44, 40x instead of 31 to 33 and 30x. In this way, in this embodiment, by defining the position of the hanging tool 60 at each raised portion 41 to 44, 40x, even if an unintended deep bottom portion is formed in each of the groove portions 10 to 15, the hanging tool 60 is formed. The inclination of the can be prevented as much as possible. Therefore, according to the present embodiment, the design line DL appearing in front of the seat cover 6S is as stable as possible, which contributes to ensuring excellent appearance quality.

Further, in this embodiment, the hanger 60 locked to the locking claw portions 22 and 25 is separated from the fixing portion 21 by the elastic repulsive force (urging force) of each of the raised portions 41 to 44, 40x. By setting it, it is possible to prevent the generation of abnormal noise due to the contact between the hanging tool 60 and the fixing portion 21 as much as possible. Further, in this embodiment, the position of the hanger 60 in each groove portion 13 or the like is determined by the raised portions 42 (43) or the like continuously formed between the general parts 31, 32 (32, 33) or the like. It can be set more stably. Further, in this embodiment, attention is paid to the fact that in a general seat pad, a deep bottom portion is likely to occur at the end portion of each groove portion 13 or the like due to a lack of meat or the like, and each bulk is formed at the end portion of each groove portion 13 or the like. Upper parts 41, 44 and the like are provided. Therefore, in this embodiment, the unintended inclination of the hanger 60 can be more reliably prevented by the raised portions 41, 44 and the like provided at the ends of the groove portions 13 and the like. Further, the seat pad 6P of this embodiment is provided with pad portions 61P and 62P having different physical properties in order to improve its performance, but when molding the seat pad 6P, a portion where different molding materials intersect (for example, the end of a groove portion) is provided. There is a concern that meat may be chipped near the part). Therefore, in this embodiment, by defining the position of the hanging tool 60 at each raised portion 41 to 44, 40x, even if an unintended deep bottom portion is formed in each of the groove portions 10 to 15, the hanging tool 60 is formed. The inclination of the can be prevented as much as possible. Therefore, according to this embodiment, a part (50, 50x) of the seat cover 6S is pulled into the grooves 10 to 15 of the seat pad 6P, and is locked by the hanger 60 which is positioned more reliably. Can be left.

The vehicle seat 2 of the present embodiment is not limited to the above-described embodiment, and various other embodiments may be adopted. In this embodiment, the configurations (shape, dimensions, extension direction, number of formations and formation positions of each portion, etc.) of 10 to 15 in each groove, general portions 31 to 33, 30x, and raised portions 41 to 44, 40x are exemplified. However, it is not intended to limit the composition of the groove and each part. For example, in each groove portion, in addition to the case where a general portion is formed between the raised portions, a raised portion can be formed between the general portions. Further, it is desirable to form a raised portion at at least one of the ends of each groove, but it is not always necessary to form a raised portion at the end when extreme meat chipping does not occur. Further, the raised portion can be formed intermittently as well as continuously. For example, when the raised portion is formed intermittently, a portion corresponding to a general portion in which the locking portion is not arranged can be formed between the adjacent raised portions. Further, the extension direction of the groove portion can be appropriately set according to the thickness of the seat pad, the design of the design surface, and the like.

Further, in the present embodiment, the configurations of the locking tool 20 and the hanging tool 60 have been illustrated, but the configuration of each tool is not limited. That is, the locking tool and the hanging tool may have various configurations that can be locked to each other. For example, an insert wire may be used as the locking tool, and the hanging tool may be locked to the insert wire with a ring (hogling is stopped). Further, the locking tool may have one or a plurality of locking claws. It is also possible to dispose a plurality of locking tools adjacent to or close to one general part. Further, in this embodiment, the hanging tool locked to the locking claw portion is separated from the fixed portion by the elastic repulsive force (urging force) of the raised portion, but this repulsive force is It does not necessarily have to act to prevent contact between the hanger and the fixed portion.

Further, in the present embodiment, the configuration of the vehicle seat 2 is illustrated, but it is not intended to limit the configuration of the vehicle seat. Further, in the present embodiment, the seat back has been described as an example, but the configuration of the present embodiment can be applied to various seat constituent members such as a seat cushion and a headrest. In addition, the configurations of the seat pad, the seat cover, and the seat frame can be changed as appropriate. For example, the seat pad may be composed of a single material or may be composed of three or more pad parts. The configuration of the present embodiment can be applied to all vehicle seats such as vehicles, aircraft, trains, and ships.

2 Vehicle seat 4 Seat cushion 6 Seat back 8 Headrest 6S Seat cover DL Design line 6F Seat frame 6P Seat pad 6a Top plate main part 6b, 6c Top plate side part 9a, 9b Partition groove 6PX1, 6PX2 Near the end of the groove Seat pad part 61P First pad part 62P Second pad part 10 Lower horizontal groove part 11 Upper horizontal groove part 12 Upper right vertical groove part 13 Upper left vertical groove part 14 Lower right vertical groove part 15 Lower left vertical groove part 20 Locking tool 21 Fixing part 21a Protruding piece 22 No. 1 Locking claws 23, 24 Locking pieces 23a, 24a Return piece 25 Second locking claws 26, 27 Another locking piece 26a, 27a Another return piece 31 Upper general part 32 Middle general part 33 Lower general part 30x Other general parts 41 Upper upper raised part 42 Upper raised part 43 Lower raised part 44 Lower lower raised part 40x Other raised parts 130 Opening of each groove BS Bottom of general part TS Tip surface of raised part SP1 Main skin piece Sa Upper piece Sb Middle piece Sc Lower piece SP2 Right side skin piece Sd Upper right piece Se Lower right piece SP3 Left side skin piece Sf Upper left piece Sg Lower left piece ST Institch 50, 50x Suture point between skin pieces 60 Hanger 61 Base 62 Locking part

Claims (5)

A seat pad forming the outer shape of the seat, a seat cover covering the surface of the seat pad, a groove portion provided on the seat pad and extending in a predetermined direction, and a groove portion attached to a part of the seat cover and extending in the extension direction of the groove portion. Equipped with a long plate-shaped or strip-shaped hanger
In a vehicle seat in which a part of the seat cover is pulled into the groove and the hanging tool is locked to a locking tool fixed to the bottom side of the groove.
The groove portion has a general portion to which the locking tool is fixed and a raised portion which is shallower than the general portion and protrudes toward the surface side of the seat pad, and the general portion. And one of the raised portions is formed in a state of being sandwiched between the other portion opposite to the one in the extending direction of the groove portion.
The hanging tool is a vehicle seat that is locked to the locking tool in a state of being pressed against the raised portion from the depth direction of the groove portion. The locking tool has a fixing portion fixed to the bottom of the groove portion and a locking claw portion protruding from the fixing portion toward the surface side of the seat pad.
The vehicle seat according to claim 1, wherein the hanging tool is locked to the locking claw portion in a state of being urged away from the fixed portion by an elastic repulsive force from the raised portion. .. The vehicle seat according to claim 1 or 2, wherein the raised portion is continuously formed so as to fill the space between the general portions in the extending direction of the groove portion. The vehicle seat according to any one of claims 1 to 3, wherein the raised portion is provided at the end of the groove. The vehicle seat according to any one of claims 1 to 4, wherein the seat pad is a molded product including a first pad portion and a second pad portion having physical properties different from those of the first pad portion. ..

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