Seat cushion

Abstract

A seat cushion body is provided that can properly protect the wiring harness from contacting the seat frame. The seat cushion body (2) that elastically supports the occupant is a structure divided into three parts: a main top plate forming the central part in the width direction of the seat and side top plates (5) forming the two side parts in the width direction of the seat. The side top plates (5) have: a base material (5B) that is assembled to the seat cushion frame (3) from the seat surface side and serves as a support base; a seat cover that covers the base material (5B) from the seat surface side; and a cover (5D) that extends from the inner edge of the base material (5B) in the width direction of the seat. The cover (5D) has: a first hinge formed at its base and a folded-back portion that is folded back from the seat back side to cover the inclined arm (3E) and is fixed to the inclined arm (3E) based on the first hinge.

Description

Technical Field

[0001] This invention relates to a seat cushion. More specifically, it relates to a seat cushion that provides elastic support for the person sitting in it. Background Technology

[0002] Patent document 1 discloses a seat in which the seat cushion body, consisting of a seat pad and a seat cover covering the seat pad, is divided into three parts in the width direction of the seat. Specifically, the seat cushion body is divided into a main top plate forming the central part in the width direction of the seat and side top plates forming the two side parts in the width direction of the seat.

[0003] In the main head panel and each side head panel, the ends of the seat covers that enclose their respective seat cushions are secured to a resin substrate laid on the back of the cushions. Thus, the main head panel and each side head panel form a structure in which the respective seat cushions are enclosed between the seat cover and the substrate.

[0004] Patent Document 1: Japanese Patent Application Publication No. 2024-59200. Summary of the Invention The problem that the invention aims to solve

[0005] In the structure described in Patent Document 1, when the wiring harness is laid near the seat frame supporting the seat cushion, the wiring harness may come into contact with the edge of the seat frame. Therefore, the object of the present invention is to provide a seat cushion that can properly protect the wiring harness from contacting the seat frame. Methods for solving problems

[0006] As a means to solve the above-mentioned problems, the cushion body of the present invention adopts the following technical solution.

[0007] That is, the first technical solution of the present invention is a seat cushion body that elastically supports the seated person. The seat cushion body is divided into three segments: a main top plate constituting the central portion in the width direction of the seat and side top plates constituting the two side portions in the width direction of the seat. The side top plates have: a base material assembled to the side frame from the seat surface side and serving as a support base; a seat cover that directly or indirectly covers the base material from the seat surface side; and a cover portion extending from the inner edge of the base material in the seat width direction. The cover portion has: an integral hinge formed at the base of the cover portion; and a folding portion that is folded back from the seat back side to cover the side frame and be fixed to the side frame with the integral hinge as the base point.

[0008] According to the first technical solution, the side frame for assembling the side top panel is covered from the back of the seat by the fold-back portion of the cover. Therefore, when the wiring harness is laid on the back of the seat of the side frame, it can be protected from contact with the side frame. Furthermore, when the side frame is used in a seat cushion for adjusting the tilt angle, it also includes a tilting arm (tilting frame) as a movable part.

[0009] The second technical solution of the present invention, based on the first technical solution described above, further includes a fastening part covering part, which covers fastening bolts and / or nuts protruding from the side frame toward the back of the seat from the back side of the seat.

[0010] According to the second technical solution, the wiring harness can be protected from contact with fastening bolts and / or nuts protruding from the side frame toward the back of the seat by the cover portion of the fastening part of the cover. Attached Figure Description

[0011] Figure 1 This is a perspective view showing the schematic structure of the cushion body according to the first embodiment. Figure 2 It is an exploded 3D view showing the seat cushion removed from the seat cushion frame. Figure 3 It is an exploded 3D view showing the seat padding on the side roof panel removed from the base material. Figure 4 This is a perspective view showing the substrate assembled onto the seat cushion frame. Figure 5 It is Figure 4 An enlarged 3D view of the cover portion of the substrate. Figure 6 This is a perspective view showing the cover of the substrate folded back towards the back of the seat and fixed to the side frame. Figure 7 yes Figure 6 View VII. Detailed Implementation

[0012] Hereinafter, the embodiments for carrying out the present invention will be described with reference to the accompanying drawings.

[0013] Implementation Method 1 First, use Figures 1 to 7 The structure of the seat body 2 according to the first embodiment of the present invention will be described. Furthermore, in the following description, when referring to directions such as front-back, up-down, left-right, etc., it refers to the directions shown in the accompanying drawings.

[0014] Additionally, when "seat width direction" or similar terms are used to describe directions including "seat," they refer to the direction based on the seat cushion 1 described later. Furthermore, in the following descriptions, if specific reference drawings are not shown, or if the reference drawings do not contain corresponding symbols, please refer to the appropriate references. Figures 1 to 7 Any one of the attached images.

[0015] like Figure 1 As shown, the seat cushion 2 according to this embodiment is applied to the seat cushion 1 constituting the seating portion of an automobile seat. For example... Figure 2As shown, the seat cushion 1 has a cushion body 2 that elastically supports the buttocks of the occupant and a cushion frame 3 that supports the cushion body 2 from the back (lower) side of the seat.

[0016] The seat cushion body 2 is a structure divided into three parts: a main top plate 4 forming the central portion in the width direction of the seat, and left and right side top plates 5 forming the two side portions in the width direction of the seat. The seat cushion frame 3 is composed of metal components assembled into a frame shape when viewed from above. Here, the seat cushion frame 3 is equivalent to the "seat frame" of the present invention.

[0017] Specifically, the seat cushion frame 3 has a pair of lower arms 3A, which form a skeleton along the left and right sides of the seat cushion 1. Furthermore, the seat cushion frame 3 has a front tube 3B integrally mounted between the front portions of each lower arm 3A. Additionally, the seat cushion frame 3 has a rear tube 3C integrally mounted between the rear portions of each lower arm 3A.

[0018] In addition, the seat cushion frame 3 has an inclined plate 3D, which forms a skeleton along the front of the seat cushion 1. Furthermore, the seat cushion frame 3 has a pair of left and right inclined arms 3E, which extend from the left and right sides of the inclined plate 3D toward the rear of the seat and are rotatably connected to the corresponding lower arms 3A.

[0019] Each tilting arm 3E is connected, and its rear end is rotatable relative to its corresponding lower arm 3A about an axis extending along the width direction of the seat (rotation center 3R). Each tilting arm 3E rotates about the rotation center 3R using a rotational driving force transmitted by a drive device (not shown). As a result, the tilt angle (tilt angle) of the tilt plate 3D relative to each lower arm 3A can be adjusted.

[0020] Since the seat cushion 2 is divided into a main top plate 4 and each side top plate 5 as described above, it is possible to replace the parts according to specifications for each segment. After assembling their respective constituent parts into one unit according to each segment, the main top plate 4 and each side top plate 5 are individually assembled into the seat cushion frame 3.

[0021] Specifically, the top plates 5 on each side are engaged by clips (not shown) and bolts B (see reference). Figure 4 The main top plate 4 is fastened to the seat cushion frame 3 as an integral part of the seat cushion frame 3. After the side top plates 5 are assembled to the seat cushion frame 3, the main top plate 4 is snap-fitted into place between them from above the seat.

[0022] The main top plate 4 and each side top plate 5 share a common basic structure. Each side top plate 5 is equipped with a covering structure that appropriately prevents the wiring harness (not shown) passing under each tilting arm 3E, which is a movable part, from contacting the lower edge of each tilting arm 3E. Hereinafter, the structure of each segment of the seat body 2 will be described in detail, taking the right side top plate 5 as an example.

[0023] like Figure 3 As shown, the side top panel 5 has a seat cushion 5A made of polyurethane foam and a resin substrate 5B laid on the back of the seat cushion 5A. Furthermore, the side top panel 5 has a fabric seat cover 5C that covers the seat cushion 5A from the surface side. The periphery of the seat cover 5C is pulled into the back of the substrate 5B and secured.

[0024] Thus, the seat cover 5C is integrated with the base material 5B by enclosing the seat cushion 5A between itself and the base material 5B. As a result, the side top panel 5 is assembled into a single module.

[0025] like Figure 4 As shown, in the side top plate 5, the base material 5B located on its back side is integrally fixed to the right-side inclined arm 3E of the seat cushion frame 3 from above the seat via a snap-fit ​​(not shown) and a bolt B. Thus, the base material 5B is assembled such that it covers the right edge of the inclined plate 3D, the inclined arm 3E, and the lower arm 3A from above the seat. Here, the inclined arm 3E corresponds to the "side frame" of the present invention.

[0026] like Figure 4 As shown, substrate 5B has a substrate top plate B1 that covers the right-side inclined arm 3E and lower arm 3A from above the seat, and a substrate inner side member B2 that extends obliquely inward (obliquely inward side of the seat back) from the inner edge of the substrate top plate B1. The substrate inner side member B2 extends in such a way that it covers the right-side inclined arm 3E and lower arm 3A from the inside in the seat width direction.

[0027] In detail, the inner part B2 of the base material extends from the inside to cover the right-side inclined arm 3E and lower arm 3A in a manner that covers approximately the entire area in the seat's fore-and-aft direction. A cover portion 5D is formed at the middle portion of the inner part B2 in the seat's fore-and-aft direction, extending in a plate-like manner from its lower edge inward.

[0028] like Figure 5 As shown, the cover portion 5D is a molded part integrally formed with the inner part B2 of the substrate. The cover portion 5D is formed to extend from the lower edge of the through hole E1 formed therein for the bolt B to fasten the inner part B2 of the substrate to the inclined arm 3E.

[0029] The inner part B2 of the base material aligns its through hole B3 with the through hole E1 formed on the tilt arm 3E, and is fastened to the tilt arm 3E by bolts B inserted into these through holes from the seat surface side. A nut N capable of fastening the bolts B passing through the through hole B3 is welded to the back side of the through hole E1 of the tilt arm 3E.

[0030] In addition to the through hole E1, a circular locking hole E2 is formed on the rear side of the inclined arm 3E. Furthermore, a circular clearance hole B4, which is larger than the locking hole E2, is formed at the location of the substrate 5B that aligns with the locking hole E2.

[0031] The locking hole E2 is used to engage the locking claw D5 formed at the front end of the cover 5D from the back of the seat. The clearance hole B4 is used to prevent interference with the locking claw D5 inserted into the locking hole E2.

[0032] The cover portion 5D has a first hinge D1 and a second hinge D2, which are integral hinges, arranged sequentially along the extension direction at its base extending from the lower edge of the inner part B2 of the base material. Through these first hinges D1 and second hinges D2, the cover portion 5D can fold its extended front end portion, i.e., the folding portion D3, around the first hinge D1 and around the second hinge D2 toward the back of the seat.

[0033] The base of the cover 5D extends inward along the upper surface of the lower flange 3F, which extends inward from the lower edge of the inclined arm 3E. The first hinge D1 of the cover 5D is formed at a position slightly beyond the lower flange 3F inward.

[0034] Therefore, the cover 5D folds back the folding part D3 around the first hinge D1 towards the back of the seat, as... Figure 6 The shown image shows a state where the lower flange 3F of the tilting arm 3E is covered. Furthermore, by folding the cover 5D back as described above, as... Figure 7 As shown, the second hinge D2 is precisely aligned with the root of the lower flange 3F.

[0035] Therefore, by further folding the folding portion D3 around the second hinge D2 so that it contacts the back of the tilting arm 3E, it can be in a state where the tilting arm 3E is also covered from the back of the seat by the cover portion 5D. After folding the folding portion D3 as described above, the cover portion 5D inserts the locking claw D5 formed at its front end into the locking hole E2 of the tilting arm 3E from the back of the seat, thereby causing the locking claw D5 to snap into the locking hole E2.

[0036] Thus, the folding section D3 is fixed in a state that covers the tilt arm 3E from the back of the seat. A fastening part cover D4 is formed on the folding section D3, which can cover the nut N welded to the back of the tilt arm 3E in a surrounding manner. The fastening part cover D4 is formed to bulge out of the folding section D3 in a crank shape, so as to cover the nut N and the shaft of the bolt B passing through the nut N from the back of the seat.

[0037] like Figures 6-7As shown, by folding back the cover portion 5D, the cover portion 5D can appropriately cover the lower flange 3F of the inclined arm 3E as an edge (see reference). Figure 6 ) and the shaft portion of the nut N and bolt B protruding towards the back of the tilting arm 3E. When the cover portion 5D folds back the folding portion D3, it can first bend the shape by folding back the folding portion D3 around the second hinge D2, so that the radius of rotation around the first hinge D1 is reduced.

[0038] Therefore, by folding back in this way, the folding part D3 of the cover 5D can be folded back in a narrow space while avoiding contact with surrounding components such as wire harnesses (not shown).

[0039] In summary, the seat cushion 2 according to this embodiment has the following structure. Furthermore, the symbols marked in parentheses below correspond to the symbols of each component shown in the above embodiment.

[0040] That is, the seat cushion body (2) that provides elastic support for the occupant is a structure divided into three parts: a main top plate (4) that forms the central part in the width direction of the seat and side top plates (5) that form the two side parts in the width direction of the seat. The side top plates (5) have: a base material (5B) assembled to the side frame (3E) from the seat surface side and serving as a support base; a seat cover (5C) that directly or indirectly covers the base material (5B) from the seat surface side; and a cover (5D) that extends from the inner edge of the base material (5B) in the width direction of the seat.

[0041] The cover (5D) has: an integral hinge (D1, D2) formed at the base of the cover; and a folding portion (D3) which is folded back from the seat back side to cover the side frame (3E) based on the integral hinge (D1, D2) and is fixed to the side frame (3E). According to the above structure, the side frame (3E) for assembling the side top plate (5) is covered from the seat back side by the folding portion (D3) of the cover (5D). Thus, when the wiring harness is laid on the seat back side of the side frame (3E), the wiring harness can be protected from contacting the side frame (3E).

[0042] Furthermore, the folding section (D3) also has a fastening part cover (D4) that covers the fastening bolts (B) and / or nuts (N) protruding from the side frame (3E) towards the back of the seat from the back side of the seat. According to the above structure, the fastening part cover (D4) of the cover (5D) can protect the wiring harness from contacting the fastening bolts (B) and / or nuts (N) protruding from the side frame (3E) towards the back of the seat.

[0043] Regarding other implementation methods The present invention has been described above using one embodiment, but the present invention can be implemented in various other forms besides the above embodiment.

[0044] 1. The seat cushion of the present invention can also be applied to seats in vehicles other than automobiles, such as railways, airplanes, and ships. Furthermore, in addition to vehicles, the seat cushion can also be applied to seats in various facilities such as sports facilities, theaters, concert halls, and event venues. The seat cushion can also be applied to seat cushions that do not have an adjustable tilt mechanism.

[0045] Furthermore, the seat cushion can be applied not only to seat cushions but also to seat backs. The seat cushion can also be a structure where the seat cover directly covers the substrate without a seat liner. Alternatively, the seat cushion can be structured as follows: replacing the seat liner by providing a thin, elastomer-based, polyurethane underlay on the surface of the substrate.

[0046] 2. The cover extending from the substrate may also have an integral hinge structure in one or more places. The folded-back portion of the cover towards the back of the side frame may also not have a cover portion that covers the fastening parts of the bolts and / or nuts protruding from the side frame towards the back of the seat from the back of the seat. Even with such a structure, the cover, by having a folded-back portion, can prevent the wiring harness arranged on the back of the seat on the side frame from contacting the side frame.

[0047] 3. When the seat cushion has a mechanism for adjusting the tilt angle, the side frame includes a tilting arm (tilt frame) as a movable part. However, when the seat cushion does not have such a mechanism, the side frame becomes the side frame (lower arm) of the seat cushion. Symbol Explanation

[0048] 1. Seat cushion 2. Seat Cushion 3. Seat cushion frame (seat frame) 3A Lower Arm 3B front tube 3C rear tube 3D tilting plate 3E Tilt Arm (Side Frame) E1 Through Hole E2 locking hole 3F Lower flange 3R Rotation Center 4. Main roof slab 5. Side Top Panel 5A Seat Cushions 5B substrate B1 Baseboard Top Plate B2 Substrate Inner Part B3 Through Hole B4 clearance hole 5C Seat Cover 5D cover D1 First Hinge (One-piece Hinge) D2 Second Hinge (One-piece Hinge) D3 Turnaround Section D4 Fastening Part Cover D5 locking claw B bolt N nut.

Claims

1. A seat cushion that provides elastic support for the person sitting on it. The seat cushion is divided into three parts: a main top plate forming the central part in the width direction of the seat, and side top plates forming the two side parts in the width direction of the seat. The side top plate has: The base material is assembled from the seat surface side to the side frame and serves as the support base; Seat covers that directly or indirectly cover the substrate from the seat surface side; as well as A cover extending from the inner edge of the seat width direction of the substrate. The cover portion has: An integral hinge is formed at the base of the cover. as well as The folding section, based on the integrated hinge, is folded back to cover the side frame from the back of the seat and is fixed to the side frame.

2. The seat cushion body according to claim 1, wherein, The folding section also has a fastening part cover, which covers fastening bolts and / or nuts protruding from the side frame toward the back of the seat from the back side of the seat.

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