Seat and cushioning materials

Abstract

To provide a seat capable of carrying easily a cushion member removed from a seat body; and to provide an easily-carriable cushion member when removed from the seat body.SOLUTION: A seat includes a seat body S0 having a seat part S1 where a person is seated and a backrest S2, and a cushion member 100 attachable to / detachable from seat surfaces S10, S20 of the seat part S1 and the backrest S2. The cushion member 100 has a handle 130 that a person can hook and hold.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a seat having a seat portion and a backrest, and a cushion member attached to the seat body. [Background technology]

[0002] Conventionally, a sheet is known in which the surface of a foam pad is covered with a skin, the skin being composed of a surface cover and a surrounding cover, and the surface cover is detachable from the surrounding cover (Patent Document 1). In this technology, the surface cover and the surrounding cover are connected to each other on the outer surface of the sheet by a wire fastener, a hook and loop fastener, or a hook means. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-097947 A Summary of the Invention [Problem to be solved by the invention]

[0004] When the cushion member is detachable from the seat body, it is desirable that the cushion member removed from the seat body can be easily carried.

[0005] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a cushion member that can be easily carried around. Another object is to make it possible to easily attach and detach the cushion member. [Means for solving the problem]

[0006] The seat for achieving the above-mentioned objective comprises a seat body having a seat portion on which a person sits and a backrest, and a cushion member that can be attached and detached to at least one of the seating surfaces of the seat portion and the backrest, and the cushion member has a handle that a person can hook their hand on and hold.

[0007] The cushion member is a cushion member that is attached to the seat body of a seat having a seat portion on which a person sits and a backrest, at least one of the seat portion and the backrest having a recess formed in part of the seat surface, has a handle that a person can hook their hand on and hold, is detachable from the recess, and fits into the recess when attached.

[0008] According to this configuration, the cushion member detached from the seat body can be easily carried. Also, the ease of carrying the cushion member allows the cushion member to be used at the destination where it is carried.

[0009] In the above-mentioned configuration, at least one of the seat and the backrest has a recess formed in a part of the seat surface, and the cushion member can be freely attached and detached to the recess and fits into the recess when attached.

[0010] According to this, the cushion member can be easily attached by simply fitting it into the recess, and the cushion member can be easily removed by simply pulling it out of the recess. In other words, the cushion member can be easily attached and detached.

[0011] In the above-mentioned configuration, the cushion member may have a seat cushion that is detachable from the seat surface of the seat, and a backrest cushion that is detachable from the seat surface of the backrest, and the handle may be provided to connect the seat cushion and the backrest cushion.

[0012] With this, the cushion member can be carried by holding the handle while the seat cushion and the backrest cushion are stacked on top of each other, so that the cushion member having the seat cushion and the backrest cushion can be made compact and easily carried.

[0013] In the above-described configuration, the seat body has left and right child seat mounting portions for mounting a child seat, and the handle is arranged so as to be positioned between the left and right child seat mounting portions when the cushion member is attached to the seat body.

[0014] This prevents the handle from getting in the way when attaching a child seat to a seat having a cushion member attached to the seat body.

[0015] In the above-mentioned configuration, the seat body has left and right child seat mounting portions for mounting a child seat, and the handle is arranged to cover at least one of the left and right child seat mounting portions when the cushion member is attached to the seat body.

[0016] This makes it possible to realize a specification in which a child seat cannot be attached to the seat unless the cushion member is removed from the seat body.

[0017] In the above-mentioned configuration, the cushion member may have a first electric wire provided in the seat cushion, a second electric wire provided in the backrest cushion, and a third electric wire connecting the first electric wire and the second electric wire, and the third electric wire may be arranged to pass through the handle.

[0018] According to this, the cushion member has a configuration in which the electric wire is provided, and the third electric wire can be neatly arranged.

[0019] In the above-mentioned configuration, the seat cushion and the backrest cushion may be substantially the same in shape and size.

[0020] According to this, since the cushion member becomes more compact by stacking the seat cushion and the backrest cushion, the cushion member having the seat cushion and the backrest cushion can be carried more easily. Also, the seat cushion and the backrest cushion can be attached to the seat body by switching them.

[0021] In the above-mentioned configuration, the handle may have a hole or a recess for hanging a hand. Effect of the Invention

[0022] According to the present invention, the cushion member can be easily carried around.

[0023] Furthermore, the cushion member is configured to be detachable from a recess formed in a part of the seat surface and to fit into the recess when attached, so that the cushion member can be easily attached and detached. [Brief description of the drawings]

[0024] [Figure 1] FIG. 1 is a perspective view of a seat according to an embodiment. [Diagram 2] FIG. 2A is a perspective view of a seat body and a cushion member, and FIG. 2B is a perspective view of the cushion member in a carried state. [Diagram 3] 2 is a vertical cross-sectional view of a seat portion and a backrest of a seat body, and a cushion member. FIG. [Figure 4] FIG. 2 is a cross-sectional view of the seat and seat cushion. [Diagram 5] FIG. 2 is a cross-sectional view of the backrest and backrest cushion. [Figure 6] 13A and 13B are diagrams showing a holding mechanism of a seat according to a first modified example. [Figure 7] 13A and 13B are diagrams showing a seat holding mechanism according to a second modified example. [Figure 8] 13A and 13B are diagrams showing a seat holding mechanism according to a third modified example. [Figure 9] 13A and 13B are diagrams showing a seat holding mechanism according to a fourth modified example. [Figure 10] 11A, 11B, and 11C are perspective views of cushion members according to modified examples, in which FIG. 11A shows a fifth modified example, FIG. 11B shows a sixth modified example, and FIG. 11C shows a seventh modified example. [Figure 11] 13A is a perspective view of a seat according to an eighth modified example, FIG. 13B is a perspective view of a cushion member, and FIG. 13C is a perspective view of the cushion member in a carried state. [Figure 12] 13A is a perspective view of a seat body and a cushion member of a seat according to a ninth modified example, and FIG. 13B is a perspective view of the seat body and a cushion member of a seat according to a tenth modified example. [Figure 13] 13(a) and 13(b) show modified examples of the handle. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] Next, an embodiment of the present invention will be described in detail with reference to the drawings. In this specification, the terms front, back, left, right, top and bottom are based on the front, back, left, right, top and bottom as seen by a person sitting in the seat. As shown in FIG. 1, the seat is configured as a vehicle seat S to be installed in an automobile, and includes a seat body S0 and a cushion member 100 attached to the seat body S0 of the vehicle seat S.

[0026] The seat body S0 has a seat portion S1 on which a person sits, a backrest S2, and a headrest S3. As shown in Fig. 1 and Fig. 2(a), the cushion member 100 is detachable from the seat surfaces S10, S20 of the seat portion S1 and the backrest S2 that support a person seated in the vehicle seat S. In more detail, the cushion member 100 is detachable from the recess 10 of the seat body S0.

[0027] As shown in Fig. 3, the seat S1 and the backrest S2 have a frame 20, a pad 30 covering the frame 20, and a skin 40 covering the pad 30. In detail, the frame 20 has a seat frame 21 constituting the frame of the seat S1, and a backrest frame 22 constituting the frame of the backrest S2. The pad 30 is made of urethane foam or the like, and has a seat pad 31 and a backrest pad 32. The skin 40 is made of fabric, leather, or the like, and has a seat skin 41 and a backrest skin 42.

[0028] The seat S1 is constructed by covering the seat frame 21 with the seat pad 31 and the seat skin 41. The backrest S2 is constructed by covering the backrest frame 22 with the backrest pad 32 and the backrest skin 42.

[0029] The seat S1 and the backrest S2 have recesses 10 formed in parts of the seat surfaces S10, S20. The recesses 10 have a seat recess 11 formed in part of the seat surface S10 of the seat S1, and a backrest recess 12 formed in part of the seat surface S20 of the backrest S2.

[0030] As shown in Fig. 2(a), the seat S1 has a seat center S11 and left and right seat side portions S12 provided on both the left and right sides of the seat center S11 and protruding upward from the seat center S11. The seat recess 11 is substantially rectangular when viewed from above, and is formed on the seat surface S10 of the seat S1 from the center to the rear in the front-rear direction of the seat center S11. As shown in Fig. 4, the seat recess 11 is formed by covering a pad recess 31A formed in a seat pad 31 with a seat cover 41.

[0031] Returning to Fig. 2(a), the backrest S2 has a backrest central portion S21 and left and right backrest side portions S22 provided on both the left and right sides of the backrest central portion S21 and protruding forward from the backrest central portion S21. The backrest recess 12 is substantially rectangular when viewed from the front, and is formed on the seat surface S20 of the backrest S2 from the central portion in the up-down direction of the backrest central portion S21 to the lower portion. As shown in Fig. 5, the backrest recess 12 is formed by covering the pad recess 32A formed in the backrest pad 32 with the backrest skin 42.

[0032] As shown in FIG. 2( a ), the cushion member 100 has a seat cushion 110 , a back cushion 120 , and a handle 130 .

[0033] 4 and 5, the cushion member 100 has a cushion pad P and a cushion skin C that covers the cushion pad P. In detail, the cushion pad P is made of urethane foam or the like, and has a seat cushion pad 111 and a backrest cushion pad 121. The cushion skin C is made of fabric, leather, or the like, and has a seat cushion skin 112 and a backrest cushion skin 122.

[0034] As shown in Fig. 4, the seat cushion 110 is formed by covering a seat cushion pad 111 with a seat cushion skin 112. Also, as shown in Fig. 5, the backrest cushion 120 is formed by covering a backrest cushion pad 121 with a backrest cushion skin 122.

[0035] As shown in Fig. 2(a), in this embodiment, the seat cushion 110 and the backrest cushion 120 have approximately the same shape and size. More specifically, both the seat cushion 110 and the backrest cushion 120 have an approximately rectangular plate shape. The left-right width of the seat cushion 110 and the left-right width of the backrest cushion 120 are approximately the same. The front-to-back length of the seat cushion 110 and the top-to-bottom length of the backrest cushion 120 are approximately the same. The thickness of the seat cushion 110 and the thickness of the backrest cushion 120 are approximately the same.

[0036] The seat cushion 110 is detachable from the seat surface S10 of the seat S1. More specifically, the seat cushion 110 is detachable from the seat recess 11. As shown in FIG. 4, the seat cushion 110 fits into the seat recess 11 when attached to the seat surface S10 of the seat S1. The seat recess 11 has left and right inner surfaces 11A and 11B that hold the seat cushion 110 of the cushion member 100 in a state where the seat cushion 110 is fitted into the seat recess 11. Also, as shown in FIG. 3, the seat recess 11 has front and rear inner surfaces 11C and 11D that hold the seat cushion 110 in a state where the seat cushion 110 is fitted into the seat recess 11.

[0037] The seat cushion 110 is formed to fit into the seat recess 11 in a slightly compressed state. As a result, when the seat cushion 110 is fitted into the seat recess 11, the left and right and front and rear side surfaces of the seat cushion 110 are in close contact with the left and right and front and rear inner side surfaces 11A-11D of the seat recess 11. The seat cushion 110 and the seat recess 11 have approximately the same contour when the seat cushion 110 is fitted into the seat recess 11.

[0038] As shown in Fig. 5, the backrest cushion 120 is detachable from the seat surface S20 of the backrest S2. More specifically, the backrest cushion 120 is detachable from the backrest recess 12. The backrest cushion 120 fits into the backrest recess 12 when attached to the seat surface S20 of the backrest S2. The backrest recess 12 has left and right inner surfaces 12A and 12B that hold the backrest cushion 120 of the cushion member 100 in a state where the backrest cushion 120 is fitted into the backrest recess 12. Also, as shown in Fig. 3, the backrest recess 12 has upper and lower inner surfaces 12C and 12D that hold the backrest cushion 120 in a state where the backrest cushion 120 is fitted into the backrest recess 12.

[0039] The backrest cushion 120 is formed to fit into the backrest recess 12 in a slightly compressed state. As a result, when the backrest cushion 120 is fitted into the backrest recess 12, the left, right, and top and bottom side surfaces of the backrest cushion 120 are in close contact with the left, right, top and bottom inner surfaces 12A-12D of the backrest recess 12. The contours of the backrest cushion 120 and the backrest recess 12 are approximately the same when the backrest cushion 120 is fitted into the backrest recess 12.

[0040] 2(a), the handle 130 is a part that a person can hang on and hold, and is provided to connect the seat cushion 110 and the back cushion 120. The handle 130 is made of, for example, fabric or leather, and is a substantially H-shaped member with notches 131A and 131B at the top and bottom. The handle 130 is provided, for example, with its lower end connected to the rear end of the back surface (lower surface) of the seat cushion 110, and its upper end connected to the lower end of the back surface (rear surface) of the back cushion 120.

[0041] 3, when the seat cushion 110 is fitted into the seat recess 11, the lower portion of the handle 130 enters into the seat recess 11 together with the seat cushion 110 and is disposed between the rear side surface of the seat cushion 110 and the rear inner surface 11D of the seat recess 11. When the backrest cushion 120 is fitted into the backrest recess 12, the upper portion of the handle 130 enters into the backrest recess 12 together with the backrest cushion 120 and is disposed between the lower side surface of the backrest cushion 120 and the lower inner surface 12D of the backrest recess 12.

[0042] 2(b), the cushion member 100 can be folded to form a substantial U-shape by overlapping the upper and lower portions of the handle 130 and overlapping the backsides of the seat cushion 110 and the back cushion 120, so that the cushion member 100 can be put into a portable state in which it can be carried by holding the handle 130. The handle 130 has a hole 131 for hanging a hand. The hole 131 is formed by parts of the notches 131A, 131B formed in the handle 130 and the edges of the seat cushion 110 and the back cushion 120.

[0043] As shown in Fig. 1, the seat body S0 further has left and right child seat attachment parts 50. The child seat attachment parts 50 are provided with fixing metal fittings for attaching a child seat, and are arranged at a predetermined interval on the left and right. Note that a detailed description of the specific structure of the child seat attachment parts 50 will be omitted in this specification, but for example, a child seat fixing structure defined by ISOFIX, an international standard, can be adopted.

[0044] The handles 130 of the cushion member 100 are provided so as to be located between the left and right child seat attachment portions 50 when the cushion member 100 is attached to the seat main body S0.

[0045] Specifically, the left and right child seat attachment parts 50 are disposed at positions that are within the width of the seat cushion 110 and the backrest cushion 120 in the left-right direction. The left-right width of the handle 130 is smaller than the distance between the left and right child seat attachment parts 50, and the handle 130 is provided at a position corresponding to the position between the left and right child seat attachment parts 50 in the left-right direction. Specifically, the handle 130 is provided near the center of the cushion member 100 in the left-right direction. As a result, when the cushion member 100 is attached to the seat main body S0, the handle 130 is entirely disposed between the left and right child seat attachment parts 50.

[0046] The vehicle seat S further includes a retaining mechanism 60. The retaining mechanism 60 is a mechanism for preventing the backrest cushion 120, fitted into the backrest recess 12, from sliding down due to a lower end of the backrest cushion 120 shifting forward as shown by the imaginary line in Fig. 3. In this embodiment, the retaining mechanism 60 has left and right hook portions 61.

[0047] The hook portion 61 is a member made of, for example, fabric or leather and has a substantially right-angled triangular shape, and is provided on the backrest S2. In detail, as shown in Fig. 2(a), the hook portion 61 is provided so as to cover a part of the lower part of the backrest recess 12 when viewed from the front side. More specifically, the hook portion 61 is provided so as to cover the left and right corners located below the backrest recess 12 when viewed from the front side.

[0048] The left hook portion 61 is attached to the left side and lower part of the left corner of the seat surface S20 of the backrest S2 that is located below the backrest recess 12. The right hook portion 61 is attached to the right side and lower part of the right corner of the seat surface S20 of the backrest S2 that is located below the backrest recess 12.

[0049] 5, when the backrest cushion 120 is fitted in the backrest recess 12, the hook portion 61 is disposed to sandwich the backrest cushion 120 between itself and the bottom surface 12E of the backrest recess 12, thereby supporting the backrest cushion 120. In this way, the hook portion 61 prevents the lower end of the backrest cushion 120 fitted in the backrest recess 12 from moving forward.

[0050] According to the present embodiment described above, the cushion member 100 can be easily attached by simply fitting it into the recess 10, and the cushion member 100 fitted in the recess 10 can be easily removed by simply pulling it out of the recess 10. This allows the cushion member 100 to be easily attached and detached.

[0051] In addition, because the cushion member 100 can be easily attached and detached, when the cushion member 100 becomes dirty, it can be easily removed to wash or replace it. In addition, by preparing a plurality of cushion members 100 with different colors, patterns, hardness, etc., the cushion member 100 can be easily replaced according to the preference of the person sitting on it.

[0052] 10(a) to 10(c), for example, by preparing a cushion member 100 equipped with planar heaters 71A, 71B, fans 72A, 72B, vibrators 73A, 73B, etc., it is possible to add a heating function, a ventilation function, a massage function, etc. to the vehicle seat S. Furthermore, since the cushion member 100 can be easily attached and detached, it is easy to replace the cushion member 100 with one having a different function, and the functions added to the vehicle seat S can be easily changed.

[0053] Furthermore, since recess 10 has inner sides 11A-11D, 12A-12D that hold cushion member 100 in a state in which cushion member 100 is fitted in recess 10, cushion member 100 fitted in recess 10 can be held firmly.

[0054] In addition, since the vehicle seat S includes the retaining mechanism 60, it is possible to prevent the backrest cushion 120 fitted in the backrest recess 12 from sliding down. In detail, the backrest cushion 120 fitted in the backrest recess 12 is hooked on the hooking portion 61, so that it is possible to prevent the lower end portion of the backrest cushion 120 from shifting forward and sliding down.

[0055] In addition, the cushion member 100 has the handle 130 that a person can hook and hold, so that the cushion member 100 removed from the seat body S0 can be easily carried. Also, because the cushion member 100 can be easily carried, it can be used at the destination where it is carried.

[0056] In addition, since the cushion member 100 has the seat cushion 110 and the backrest cushion 120, and the handle 130 is provided to connect the seat cushion 110 and the backrest cushion 120, the cushion member 100 can be carried by holding the handle 130 in a state where the seat cushion 110 and the backrest cushion 120 are stacked. This makes it possible to make the cushion member 100 having the seat cushion 110 and the backrest cushion 120 compact and easy to carry.

[0057] Furthermore, when the cushion member 100 is attached to the seat body S0, the handle 130 is arranged to be located between the left and right child seat attachment portions 50, so that the handle 130 is prevented from getting in the way when attaching a child seat to the vehicle seat S having the cushion member 100 attached to the seat body S0.

[0058] In addition, since the seat cushion 110 and the backrest cushion 120 have substantially the same shape and size, the cushion member 100 becomes more compact by stacking the seat cushion 110 and the backrest cushion 120. This makes it easier to carry the cushion member 100 having the seat cushion 110 and the backrest cushion 120.

[0059] In addition, since the seat cushion 110 and the backrest cushion 120 have substantially the same shape and size, it is possible to attach the seat cushion 110 and the backrest cushion 120 interchangeably to the seat body S0. In addition, when the cushion member 100 is removed from the seat body S0 and carried to a destination for use, it is possible to use the seat cushion 110 and the backrest cushion 120 in the overlapped state.

[0060] Although one embodiment of the invention has been described above, the present invention is not limited to the above embodiment, and can be modified as appropriate as shown in the following examples. Note that, in the following, the same components as those in the above embodiment are given the same reference numerals, and their description will be omitted.

[0061] In the above embodiment, the hook portion 61 of the holding mechanism 60 is provided so as to cover a part of the lower portion of the backrest recess 12 when viewed from the front side, but this is not limited thereto, and the hook portion may be provided so as to cover the entire lower portion of the backrest recess 12 when viewed from the front side. Also, the hook portion may be made of a member constituting the skin and provided integrally with the skin.

[0062] In addition, in the above embodiment, the holding mechanism 60 has the hook portion 61, but the present invention is not limited to this.

[0063] For example, as shown in Fig. 6, the holding mechanism 60 may have an engaging portion 62A and an engaged portion 62B. The engaging portion 62A is a concave portion provided on the left and right side surfaces of the backrest cushion 120. The engaged portion 62B is a convex portion provided on the left and right inner surfaces 12A, 12B of the backrest recess 12 formed in the backrest S2. The engaging portion 62A engages with the engaged portion 62B when the backrest cushion 120 is fitted into the backrest recess 12.

[0064] According to this configuration, when the backrest cushion 120 fits into the backrest recess 12, the engaging portion 62A and the engaged portion 62B engage with each other, thereby preventing the backrest cushion 120 from sliding down.

[0065] In the modified example shown in FIG. 6, the engaging portion 62A of the cushion member 100 is concave and the engaged portion 62B of the backrest S2 is convex, but the present invention is not limited to this. For example, the engaging portion may be convex and the engaged portion may be concave. Also, instead of one pair, multiple pairs of engaging portions and engaged portions may be provided on each of the left and right sides. Also, the engaging portion and engaged portion may have a shape that combines convex and concave portions. Also, the engaging portion and engaged portion may have different convex and concave shapes on the left and right sides. Also, the engaging portion may be provided on the back surface of the backrest cushion 120 and the engaged portion may be provided on the bottom surface of the backrest recess 12.

[0066] 7, the holding mechanism 60 may have a configuration including a first magnetic member 63A and a second magnetic member 63B. A plurality of first magnetic members 63A are provided on the backrest S2. The first magnetic members 63A are provided in a fixed state between the bottom surface of the pad recess 32A of the backrest pad 32 and the backrest skin 42.

[0067] A plurality of second magnetic members 63B are provided on the backrest cushion 120. The plurality of second magnetic members 63B are provided at positions facing the corresponding first magnetic members 63A when the backrest cushion 120 is fitted into the backrest recess 12. The second magnetic members 63B are provided in a fixed state between the rear surface of the backrest cushion pad 121 and the backrest cushion skin 122 of the backrest cushion 120.

[0068] One of the first magnetic member 63A and the second magnetic member 63B is made of a permanent magnet, and the other is made of a permanent magnet or a ferromagnetic material such as iron. As a result, the second magnetic member 63B is attracted to the first magnetic member 63A by magnetic force when the backrest cushion 120 is fitted in the backrest recess 12.

[0069] According to this configuration, when the backrest cushion 120 fits into the backrest recess 12, the second magnetic member 63B is attracted to the first magnetic member 63A by magnetic force, thereby preventing the backrest cushion 120 from sliding down.

[0070] Alternatively, the second magnetic member may be provided on the side surface of the backrest cushion 120, and the first magnetic member may be provided on the inner surface of the backrest recess 12.

[0071] 8, the holding mechanism 60 may have a friction member 64. The friction member 64 is provided on the backrest cushion 120 and the backrest S2. More specifically, the friction member 64 is a strip-shaped member made of rubber, felt, or the like, and has a first friction member 64A and a second friction member 64B. The first friction member 64A is provided on the left and right side surfaces of the backrest cushion 120, and the second friction member 64B is provided on the left and right inner surfaces 12A, 12B of the backrest recess 12.

[0072] The first friction member 64A and the second friction member 64B generate frictional forces between the left and right side surfaces of the backrest cushion 120 and the left and right inner surfaces 12A, 12B of the backrest recess 12 formed in the backrest S2, thereby preventing the backrest cushion 120 fitted in the backrest recess 12 from slipping down.

[0073] According to such a configuration, when the backrest cushion 120 fits into the backrest recess 12, frictional force is generated between the backrest cushion 120 and the backrest S2, so that the backrest cushion 120 can be prevented from sliding down.

[0074] The first friction member may be provided on the rear surface of the backrest cushion 120, and the second friction member may be provided on the bottom surface of the backrest recess 12. Also, the friction member may be provided on only one of the backrest cushion 120 and the backrest S2.

[0075] 9, the retaining mechanism 60 may have a hook-and-loop fastener 65 consisting of a first fastener member 65A and a second fastener member 65B. The first fastener member 65A and the second fastener member 65B are formed in a strip shape and are detachable from each other. A plurality of first fastener members 65A are provided on the backrest S2. The first fastener members 65A are provided on the left and right sides of the bottom surface of the backrest recess 12, respectively.

[0076] A plurality of second fastener members 65B are provided on the backrest cushion 120. The plurality of second fastener members 65B are provided at positions facing the corresponding first fastener members 65A when the backrest cushion 120 is fitted into the backrest recess 12. The second fastener members 65B are detachable from the first fastener members 65A, and attach to the corresponding first fastener members 65A when the backrest cushion 120 is fitted into the backrest recess 12.

[0077] According to this configuration, when the backrest cushion 120 fits into the backrest recess 12, the fastener members 65A, 65B stick to each other, thereby preventing the backrest cushion 120 from slipping down.

[0078] Alternatively, the second fastener member may be provided on the side surface of the backrest cushion 120, and the first fastener member may be provided on the inner surface of the backrest recess 12.

[0079] The holding mechanism may be configured by combining two or more of the configurations of the above-described embodiment and the modified examples shown in Figures 6 to 9. That is, the holding mechanism 60 may be configured to include two or more of the hook portion 61, the engaging portion 62A and the engaged portion 62B, the first magnetic member 63A and the second magnetic member 63B, the friction member 64, and the hook and loop fastener 65.

[0080] The retaining mechanism may be provided not only in the backrest but also in the seat. For example, when the configurations of the modified examples shown in Fig. 7 and Fig. 9 are provided in the seat S1, the seat cushion 110 and the backrest cushion 120 may be attached by magnetic force or by hook-and-loop fastener when the cushion member 100 is in a portable state (see Fig. 2(b)). Also, as long as the cushion member is firmly held to the seat body by fitting into a recess and does not slip, the vehicle seat may not be provided with a retaining mechanism.

[0081] As shown in FIG. 10(a), the cushion member 100 may further include an electrical component 70, a battery 80 for supplying power to the electrical component 70, and electric wires 91 and 92.

[0082] The electrical components 70 are, for example, sheet-shaped heaters 71A and 71B. The heater 71A is provided on the seat cushion 110, and the heater 71B is provided on the back cushion 120. The battery 80 is provided in the seat cushion 110. The battery 80 may be a rechargeable battery. Also, the battery 80 may be replaceable.

[0083] The electric wire 91 is an electric wire that connects the battery 80 and the electrical component 70 (heater 71A) provided in the seat cushion 110, and is provided in the seat cushion 110.

[0084] The electric wire 92 connects the battery 80 and the electrical component 70 (heater 71B) provided on the backrest cushion 120. The electric wire 92 has a first electric wire 92A provided on the seat cushion 110, a second electric wire 92B provided on the backrest cushion 120, and a third electric wire 92C connecting the first electric wire 92A and the second electric wire 92B. The third electric wire 92C is provided so as to pass through a handle 130 that connects the seat cushion 110 and the backrest cushion 120.

[0085] The electrical components 70 provided on the cushion member 100 are not limited to the heaters 71A and 71B shown in Fig. 10(a). For example, as shown in Fig. 10(b), they may be fans 72A and 72B for cooling or the like, or as shown in Fig. 10(c), they may be vibrators 73A and 73B for generating vibrations.

[0086] According to this configuration, the cushion member 100 has the electric wires 91, 92, and the third electric wire 92C can be neatly arranged.

[0087] Furthermore, by providing the electric components 70 and the battery 80 connected by electric wires 91, 92 to the cushion member 100, when the cushion member 100 is attached to the seat body S0, it is possible to add a heating function, an air blowing function, a massage function, and the like to the vehicle seat S. Furthermore, when the cushion member 100 is detached from the seat body S0, these functions can be used even when the cushion member 100 is carried to a different location.

[0088] The electrical components provided in the seat cushion 110 and the electrical components provided in the backrest cushion 120 do not have to be the same type, and may be different types. For example, the seat cushion 110 may be provided with a fan, and the backrest cushion 120 with a heater. The electrical components provided in the seat cushion 110 do not have to be of one type, and may be of two or more types. For example, the seat cushion 110 may be provided with both a heater and a fan. The same applies to the electrical components provided in the backrest cushion 120.

[0089] The battery may be provided in the backrest cushion 120 instead of in the seat cushion 110, or may be provided in both the seat cushion 110 and the backrest cushion 120. The electric wire 92 may be a continuous electric wire, or may be a plurality of electric wires, for example, a first electric wire 92A, a second electric wire 92B, and a third electric wire 92C, which are separate members, connected together.

[0090] In the above embodiment, the handle 130 of the cushion member 100 is provided so as to be located between the left and right child seat attachment parts 50 when the cushion member 100 is attached to the seat body S0, but this is not limited to this. For example, as shown in Fig. 11(a), the handle 230 may be provided so as to cover the left and right child seat attachment parts 50 when the cushion member 100 is attached to the seat body S0.

[0091] Specifically, the left and right child seat attachment parts 50 are disposed at positions that are within the width of the seat cushion 110 and the backrest cushion 120 in the left-right direction. As shown in Figs. 11(b) and (c), the left-right width of the handle 230 is substantially the same as the left-right width of the seat cushion 110 and the backrest cushion 120, and the handle 230 is provided across the entire width of the seat cushion 110 and the backrest cushion 120 in the left-right direction. As a result, when the cushion member 100 is attached to the seat main body S0, the handle 230 covers the left and right child seat attachment parts 50. The handle 230 has holes 131 for hanging hands.

[0092] According to this configuration, it is possible to realize a specification in which the child seat cannot be attached to the vehicle seat S unless the cushion member 100 is removed from the seat body S0.

[0093] Although not shown in the drawings, the handle may be provided so as to cover only one of the left and right child seat attachment portions 50 when the cushion member 100 is attached to the seat main body S0.

[0094] In the above embodiment, the vehicle seat S is a seat having a child seat attachment portion 50, such as a second-row seat or a third-row seat of an automobile, but is not limited thereto. For example, the vehicle seat may be a seat that does not have a child seat attachment portion, such as a driver's seat or a passenger seat of an automobile.

[0095] In the above embodiment, the seat cushion 110 and the back cushion 120 have substantially the same shape and size, but this is not limiting. For example, the seat cushion and the back cushion may have substantially the same shape but different sizes, or may have substantially the same size but different shapes. Also, the seat cushion and the back cushion may have different shapes and sizes.

[0096] In the above embodiment, the cushion member 100 has both the seat cushion 110 detachable from the seat surface S10 of the seat S1 and the backrest cushion 120 detachable from the seat surface S20 of the backrest S2, but is not limited to this. For example, as shown in Fig. 12(a), the cushion member 100 may have only the seat cushion 110 detachable from the seat surface S10 (seat recess 11) of the seat S1. In the modified example shown in Fig. 12(a), only the seat S1 has a recess (seat recess 11) formed in a part of the seat surface S10, and no recess for attaching and detaching the cushion member is formed in the seat surface S20 of the backrest S2.

[0097] 12(b), the cushion member 100 may have only a backrest cushion 120 that is detachable from the seat surface S20 (backrest recess 12) of the backrest S2. In the modification shown in FIG. 12(b), only the backrest S2 has a recess (backrest 12) formed in a part of the seat surface S20, and no recess for attaching and detaching the cushion member is formed in the seat surface S10 of the seat S1.

[0098] In addition, when the cushion member 100 has only one of the seat cushion 110 and the backrest cushion 120, the handle 330 does not connect the seat cushion and the backrest cushion as shown in Fig. 13(a). The handle 330 is, for example, a substantially U-shaped member made of fabric or leather, and is provided by connecting it to the vicinity of the end of the back surface of the seat cushion 110 or the backrest cushion 120. The handle 330 may be configured to be folded so as to be attached to the back surface of the cushion member 100 as shown by the imaginary line, for example, when the cushion member 100 is attached to the seat main body S0.

[0099] In the above embodiment, the handle 130 has a hole 131 for hanging a hand, but the present invention is not limited to this. For example, as shown in Fig. 13(b), the handle 430 provided on the back surface of the seat cushion 110 or the back cushion 120 may have a recess 431 for hanging a hand.

[0100] In the above embodiment, the seat is exemplified as a vehicle seat S mounted on an automobile, but is not limited thereto. For example, the seat may be a vehicle seat mounted on a vehicle other than an automobile, specifically, a railroad car, a ship, an airplane, etc. In addition, the seat may be a seat used at home, a seat installed in a facility, etc.

[0101] In addition, in the above embodiment, the cushion member 100 was detachably attached to the recess 10 formed in a part of the seating surface of the vehicle seat S, but the cushion member can be configured to be detachably attached to the seating surface of a seat that does not have a recess formed therein.

[0102] Furthermore, in the above embodiment, the cushion member 100 has the handle 130, but the cushion member may be configured without a handle.

[0103] Furthermore, the elements described in the above embodiment and modified examples may be implemented in any combination. [Explanation of symbols]

[0104] 10 Recess 50 Child seat attachment point 100 Cushion member 110 Seat cushion 120 Backrest Cushion 130 Handle 131 holes S Vehicle seat S0 Seat body S1 seat S2 Backrest S10, S20 seat

Claims

1. A seat body having a seat portion on which a person sits and a backrest; A cushion member that is detachable from at least one of the seat surface of the seat portion and the backrest, The cushion member is A handle that people can hook their hands on and hold, A seat cushion that is detachable from the seat surface of the seat; A backrest cushion that is detachable from the seat surface of the backrest; A first electric wire provided in the seat cushion; A second electric wire provided in the backrest cushion; a third electric wire connecting the first electric wire and the second electric wire, The handle is provided to connect the seat cushion and the backrest cushion, The seat is characterized in that the third electric wire is arranged to pass through the handle.

2. At least one of the seat and the backrest has a recess formed in a part of the seat surface, 2. The seat according to claim 1, wherein the cushion member is detachable from the recess and fits into the recess in an attached state.

3. The seat body has left and right child seat mounting portions for mounting a child seat, 3. The seat according to claim 1, wherein the handle is provided so as to be located between the left and right child seat attachment portions when the cushion member is attached to the seat body.

4. The seat body has left and right child seat mounting portions for mounting a child seat, 3. The seat according to claim 1, wherein the handle is provided so as to cover at least one of the left and right child seat attachment portions when the cushion member is attached to the seat body.

5. 5. The seat according to claim 1, wherein the seat cushion and the backrest cushion are substantially the same in shape and size.

6. 6. The seat according to claim 1, wherein the handle has a hole or a recess for hanging a hand.

7. A cushion member is attached to a seat body of a seat having a seat portion on which a person sits and a backrest, at least one of the seat portion and the backrest having a recess formed in a part of a seat surface, A handle that people can hook their hands on and hold, A seat cushion that is detachable from the seat surface of the seat; A backrest cushion that is detachable from the seat surface of the backrest; A first electric wire provided in the seat cushion; A second electric wire provided in the backrest cushion; a third electric wire connecting the first electric wire and the second electric wire, the third electric wire being detachable from the recess and fitted into the recess in an attached state; The handle is provided to connect the seat cushion and the backrest cushion, The cushion member is characterized in that the third electric wire is arranged to pass through the handle.

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