seating equipment

Abstract

To provide a structure which enables a swingable movable part to be arranged on a seating surface in a well-fitting manner at a vehicle seat.SOLUTION: In a vehicle seat 10, swing means 16 is disposed having a drive mechanism 50 at a through hole 22 formed by cutting out a part of a seating surface 12a of a seat cushion 12, and having a movable part 18 which transmits swinging of the drive mechanism 50 to a seated person H. A recessed part 20 recessed in a thickness direction so as to enclose the through hole 22 is provided on the seating surface 12a of the seat cushion 12, and the lower surface side of the movable part 18 is formed into a shape along the recessed part 20.SELECTED DRAWING: Figure 11

Description

[Technical Field]

[0001] The present invention relates to a vehicle seat to be installed in a vehicle such as a vehicle. [Background technology]

[0002] Patent Document 1 proposes a vehicle seat installed in a vehicle, in which the seat portion on which the occupant sits is made swingable in order to alleviate the lack of exercise of the occupant. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-86996 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the vehicle seat described above has a structure in which the pivotable portion of the seat (movable portion) protrudes significantly from the seat surface of the vehicle seat, which may cause discomfort when seated. Furthermore, if the movable portion is made larger to more effectively transmit the pivoting motion to the seat occupant, the seat would become larger and more noticeable.

[0005] The present invention aims to provide a vehicle seat with a swingable seat portion, in which the swingable movable portion is disposed so as to fit snugly within the seat surface. [Means for solving the problem]

[0006] One aspect of the present invention is a vehicle seat comprising: a seat back that supports the back of a seated occupant; a seat cushion that supports the buttocks of the seated occupant; a frame that supports the seat cushion and the seat back; a through hole formed by hollowing out a portion of the seat surface of the seat cushion or the seat back and communicating with the frame; a drive mechanism fixed to the frame at a portion corresponding to the through hole; and a movable part that is supported by the drive mechanism and abuts against the seated occupant to transmit the swinging of the drive mechanism to the seat occupant, wherein the seat surface is provided with a recess that is recessed in the thickness direction around the through hole, and the movable part extends around the through hole and has a back surface that is shaped to follow the recess. [Effects of the Invention]

[0007] According to the vehicle seat of the above aspect, the movable portion can be disposed so as to fit comfortably within the seat surface. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view of a vehicle seat according to a first embodiment of the present invention; [Figure 2] 2 is a rear view of the vicinity of the lower end of the vehicle seat of FIG. 1. FIG. [Figure 3] FIG. 2 is a perspective view of the seat cushion with the swinging means of FIG. 1 removed. [Figure 4] FIG. 2 is a plan view of the swinging means of FIG. [Figure 5] FIG. 4 is a front view of the swinging means of FIG. 3. [Figure 6] FIG. 4 is a side view of the swinging means of FIG. 3. [Figure 7] FIG. 2 is a perspective view of a seat frame of the seat cushion of FIG. 1. [Figure 8] FIG. 8 is an exploded cross-sectional view taken along line VIII-VIII in FIG. [Figure 9] 9 is an enlarged cross-sectional view of a contact portion between the movable portion and the recessed portion of the seat cushion in FIG. 8. FIG. [Figure 10] FIG. 2 is an exploded cross-sectional view taken along line XX in FIG. [Figure 11]2 is a schematic cross-sectional view showing a state in which an occupant is seated in the vehicle seat of FIG. 1. FIG. [Figure 12] FIG. 10 is a partially enlarged cross-sectional view of a seat cushion and a movable portion according to a second embodiment. [Figure 13] FIG. 11 is a plan view of a movable section according to a third embodiment. [Figure 14] FIG. 10 is a plan view of the inside of a seat cushion according to a fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the terms "up and down," "left and right," and "front and back" refer to the directions as seen by an occupant H seated in the vehicle seat 10 (see FIG. 11).

[0010] (First embodiment) As shown in Figure 1, the vehicle seat 10 of this embodiment includes a seat cushion 12, which is a seat portion that supports the buttocks of an occupant H (see Figure 11), a seat back 14, which is a backrest, and a rocking means 16 arranged on the seat cushion 12.

[0011] The seat cushion 12 includes a seat frame 30 (see FIG. 7), a cushion pad 25a supported by the seat frame 30, and a cover 25b that covers the cushion pad 25a, as shown in FIG. 10. The seat back 14 is attached to the rear end of the seat cushion 12. Like the seat cushion 12, the seat back 14 includes a seat frame 73, a cushion pad 71 supported by the seat frame 73, and a cover 72 that covers the cushion pad 71. The cover 25b, 72 are made of a material such as suede fabric or synthetic leather that is soft to the touch.

[0012] The seat frame 30 of the vehicle seat 10 is installed on a slide mechanism 60 for adjusting the position of the vehicle seat 10 in the fore-and-aft direction. The slide mechanism 60 is provided on both left and right sides of the vehicle seat 10. As shown in FIG. 1, the vehicle seat 10 is covered with a first cover member 34, a second cover member 36, and a third cover member 38 to prevent foreign objects from entering the seat frames 30, 73 and the slide mechanism 60. The first cover member 34 mainly covers the seat frame 30. A pair of second cover members 36 are provided on both sides of the vehicle seat 10 to cover the slide mechanism 60. The third cover member 38 covers the seat frame 73 at the back of the seat back 14. As shown in FIG. 2, the cover members 34, 36, and 38 also cover the back of the vehicle seat 10.

[0013] As shown in FIG. 11, the rocking means 16 is a device that rocks the pelvis of the seated person H while supporting the buttocks of the seated person H, and a part of its lower side is disposed inside the seat cushion 12. As shown in FIG. 5, the rocking means 16 includes a movable part 18 that contacts the seated person H, and a drive mechanism 50 provided below the movable part 18. Details of the rocking means 16 will be described later. The rocking means 16 may be provided in the seat back 14. Although not particularly limited, in this embodiment, an example in which the rocking means 16 is provided in the seat cushion 12 as shown in FIG. 1 will be described.

[0014] 1 is installed in, for example, the driver's seat of a vehicle. The rocking means 16 is used to rock the seated occupant H to exercise the occupant H to eliminate lack of exercise, to provide a massage effect to the occupant H to reduce fatigue, or to encourage the occupant H, who is the driver, to pay more attention to driving when his or her attention becomes distracted.

[0015] The seat cushion 12 and the rocking mechanism 16 of the vehicle seat 10 will be described in detail below. The seat cushion 12 is formed with a recess 20 for mounting the rocking mechanism 16 and a through-hole 22 for installing a drive mechanism 50 for the rocking mechanism 16. The recess 20 is formed in a shape corresponding to the planar shape of the movable part 18 so as to comfortably accommodate the movable part 18. That is, front edge portions 20e1 and 20e2, which are the front edges of the recess 20, extend forward while inclining with respect to the left-right direction. The recess 20 is formed in a substantially triangular shape in which the front edge portions 20e1 and 20e2 protrude while narrowing in the width direction. The recess 20 is formed with a front recess 20a corresponding to the front end 18a of the movable part 18, a right recess 20b corresponding to the right end 18b of the movable part 18, a left recess 20c corresponding to the left end 18c of the movable part 18, and a rear recess 20d corresponding to the rear end 18d of the movable part 18. The front recess 20a is formed larger than the other portions.

[0016] 8, recess 20 is formed as an inclined surface whose depth in the thickness direction gradually increases toward central through-hole 22. In recess 20, the boundary portion with through-hole 22 is recessed deepest in the thickness direction.

[0017] The through-hole 22 is formed in approximately the center of the recess 20 by hollowing out the cushion pad 25a that constitutes the seat cushion 12. The through-hole 22 forms a space for installing the drive mechanism 50 of the swinging means 16, and is formed in a rectangular shape according to the planar shape of the swinging means 16. The shape of the through-hole 22 is not particularly limited to a rectangle, and is set appropriately according to the shape of the drive mechanism 50 of the swinging means 16.

[0018] 3, the front recess 20a, which has a large horizontal length of the recess 20, is provided with a friction reduction portion 23 made of a cloth having a lower friction coefficient than the surface 25b of the seat cushion 12. Examples of the cloth having a low friction coefficient that can be used include cloth made of fibers having a low friction coefficient, such as nylon fiber, high-molecular-weight polyethylene fiber, and fluororesin fiber. The recess 20 other than the friction reduction portion 23 is covered with the surface 25b so that the cushion pad 25a is not exposed.

[0019] The cover 25b is fixed to the cushion pad 25a at the boundary with the through-hole 22, which is the deepest part of the recess 20. As shown in FIG. 8, a wire 21b is embedded in the cushion pad 25a near the through-hole 22. The wire 21b is arranged so as to surround the periphery of the through-hole 22, and an end of the cover 25b is fixed to the wire 21b via a C-shaped clip 21a. As shown in FIG. 3, by fixing the cover 25b at the boundary between the recess 20 and the through-hole 22, it is possible to make the sloped portion between the through-hole 22 and the edge of the recess 20 a smooth surface without any irregularities. Furthermore, by attaching the clip 21a to the boundary between the recess 20 and the through-hole 22, it is possible to prevent force from being applied to the clip 21a from outside the vehicle seat 10, thereby reducing the load on the clip 21a.

[0020] It should be noted that cushion pad 25a may be exposed on the side wall of through hole 22. Cover 25b may be fixed in a portion that avoids the inclined portion of recess 20, and may cover the inner side of through hole 22. In the example of FIG. 3, cover 25b covers the inner side surface of through hole 22 at the rear end of through hole 22. In this case, cover 25b is fixed to cushion pad 25a by clip 21a near the bottom of through hole 22. Cover 25b may also be passed through through hole 22 and folded back to the back side of cushion pad 25a and fixed.

[0021] 5, the rocking means 16 includes a movable part 18 disposed at the upper end, and a drive mechanism 50 that supports and drives the movable part 18. The upper surface 18f of the movable part 18 abuts against the seated person H (see FIG. 11), and transmits the rocking motion generated by the drive mechanism 50 to the seated person H.

[0022] As shown in Fig. 4, the movable part 18 is formed in a generally triangular shape in plan view, with front edges 18e1, 18e2 inclined and narrowing in the left-right direction while protruding toward the front end 18a. The front end 18a, right end 18b, and left end 18c of the movable part 18 are formed to be rounded. Furthermore, the rear end 18d of the movable part 18 is formed to extend linearly in the left-right direction. Because the movable part 18 is formed in a generally rounded triangular shape overall, even if the front end 18a stops in a state where it is tilted from the center in the left-right direction, it is possible to reduce the discomfort felt by the seated person H in terms of visual and seating comfort.

[0023] 8, the movable part 18 includes a support body 42 that receives the swinging displacement of the drive mechanism 50, a cushion pad 48 that covers the upper part of the support body 42, and a cover 46 that covers the outer surface of the cushion pad 48. The cushion pad 48 has flexibility to the extent that it exhibits cushioning properties equivalent to those of the surrounding seat cushion 12. The cover 46 that covers the cushion pad 48 is made of the same material as the cover 25b of the seat cushion 12.

[0024] The support body 42 includes a flexible plate 41 that abuts against the lower end of the cushion pad 48, and a rigid member 43 that is disposed below the flexible plate 41. The rigid member 43 includes a concavely curved plate-like upper end 43a and a pillar portion 43b that protrudes downward from the center of the upper end 43a. The pillar portion 43b abuts against the shaft member 54 at its arc-shaped abutment surface, thereby causing tilting and displacement that rotates around the axis of the pillar portion 43b.

[0025] The flexible plate 41 also has multiple protrusions 41a extending toward the upper end 43a of the rigid member 43. The protrusions 41a are configured to abut against the upper end 43a of the rigid member 43 and slide along its concave surface, converting a portion of the displacement caused by the tilt of the rigid member 43 into horizontal displacement. By including the flexible plate 41 and the rigid member 43, the movable part 18 can perform twisting and swinging movements that combine horizontal displacement and displacement rotating around an axis. The flexible plate 41 is a plate-like member made of a flexibly deformable resin material. When the movable part 18 is displaced and pressed against the recess 20, the flexible plate 41 flexibly deforms together with the cushion pad 48. This improves the ability of the movable part 18 to follow the recess 20, enabling the movable part 18 to swing smoothly.

[0026] The lower surface 18g of the movable part 18 is covered with a friction reducer 44 made of fabric having a lower coefficient of friction than the surface 46. The friction reducer 44 is joined to the end of the surface 46 on the lower surface side of the movable part 18 by stitching. The friction reducer 44 extends to the vicinity of the column portion 43b of the rigid member 43 of the movable part 18. It is preferable that the end of the friction reducer 44 extend further inward than the clip 21a of the surface 25b of the cushion pad 25a. By extending the friction reducer 44 further inward in this way, it is possible to prevent foreign matter from entering the internal structure. The end of the friction reducer 44 is fixed to the rigid member 43 by, for example, screwing.

[0027] The friction reduction portion 44 is made of a cloth made of fibers with a low friction coefficient, such as nylon fibers, high molecular weight polyethylene fibers, or fluororesin fibers, and reduces the frictional resistance between the underside 18g of the movable portion 18 and the recess 20 of the seat cushion 12, allowing the movable portion 18 to swing smoothly.

[0028] The drive mechanism 50 includes a motor 52 and a shaft member 54 that transmits the rotational motion of the motor 52 to the movable part 18 as a swinging displacement. The shaft member 54 includes a gear, a screw shaft, an eccentric shaft member, or the like, and generates a swinging displacement in the movable part 18, including a predetermined twisting motion and swinging motion.

[0029] The swinging means 16 is attached to the seat cushion 12 by inserting the drive mechanism 50 into the through-hole 22 of the seat cushion 12. The drive mechanism 50 is housed in the housing 24 of the seat frame 30, and the bottom of the drive mechanism 50 is fixed to the bottom of the housing 24 by fastening bolts. The drive mechanism 50 is positioned so that the motor 52 does not overlap the lower part of the recess 20. By placing the large motor 52 in a position that does not overlap the recess 20, the drive mechanism 50 can be positioned compactly, and the seat cushion 12 can be made thinner. Because the motor 52 has a certain thickness, there is a risk that the hard protrusion will hit the legs of the seated occupant H when seated, causing discomfort. Therefore, it is preferable to position the motor 52 of the drive mechanism 50 rearward of the shaft member 54, as shown in the figure.

[0030] As shown in FIG. 7 , the seat frame 30 has a storage section 24 surrounded by a rectangular partition wall 24A in a portion corresponding to the through-hole 22 of the seat cushion 12. The partition wall 24A of the storage section 24 is joined onto a mounting plate 24B installed on the seat frame 30. The partition wall 24A is formed to have dimensions that are approximately the same as or larger than the through-hole 22, and communicates with the through-hole 22. The partition wall 24A is configured to prevent dust and other particles from entering the drive mechanism 50. The storage section 24 is held between a pair of side frames 31.

[0031] A fan 56 is provided at the rear end of the partition wall 24A. Heat generated by the motor 52 inside the partition wall 24A is not trapped inside but is released to the outside through the fan 56. In this way, the fan 56 prevents a drop in power due to overheating of the motor 52. The fan 56 is positioned away from the rear end of the first cover member 34 shown in FIG. 2, and is configured so that the exhaust air from the fan 56 can easily spread within the first cover member 34.

[0032] 10, the fan 56 is preferably provided at a position outside the recess 20 of the seat cushion 12. This allows the fan 56 to be compactly arranged inside the seat cushion 12 without interfering with the recess 20.

[0033] 9, the movable part 18 is disposed in a recess 20 of the seat cushion 12. The recess 20 is formed to fit along the underside of the movable part 18, so that most of the movable part 18 is accommodated in the recess 20. Therefore, the upper surface 18f of the movable part 18 does not protrude significantly from the seating surface 12a of the seat cushion 12, and the upper surface 18f is at approximately the same height as the seating surface 12a. In this way, the movable part 18 is disposed so as to fit snugly within the seat cushion 12.

[0034] 10, the vehicle seat 10 is provided with an angle adjustment member so that the occupant H can comfortably sit on the seat cushion 12 equipped with the movable portion 18. The angle adjustment member includes a front spacer 65 and a rear spacer 69 disposed between the slide mechanism 60 and the seat frame 30.

[0035] The front spacer 65 has its lower end joined near the front end of the slider 63 that slides on the slide rail 61, and its upper end joined to the front portion of the seat frame 30. The rear spacer 69 has its lower end joined near the rear end of the slider 63, and its upper end joined to the rear portion of the seat frame 30. The front spacer 65 is higher than the rear spacer 69, and is set to be arranged so as to lift the front side of the seat cushion 12 upward. The front spacer 65 and rear spacer 69 are fastened to the seat frame 30 and slider 63 with bolts, and can be easily replaced with spacers of the desired height.

[0036] The vehicle seat 10 of this embodiment is configured as described above, and its operation will be described below.

[0037] As shown in FIG. 11 , the vehicle seat 10 is attached to the seat cushion 12 so that the movable portion 18 of the rocking means 16 is accommodated in a recess 20 of the seat cushion 12. The recess 20 is shaped to deepen in the thickness direction along the shape of the bottom of the movable portion 18. As a result, the upper surface 18f of the movable portion 18 is positioned comfortably within the seat cushion 12, forming substantially the same surface as the seat surface 12a of the seat cushion 12. Despite the large rocking means 16 in the seat cushion 12, the seated occupant H can sit on the vehicle seat 10 with the same comfort as sitting on a normal seat cushion 12. Furthermore, the periphery of the movable portion 18 is composed of a flexible plate 41 and a cushion pad 48. Therefore, the movable portion 18 flexibly recesses in accordance with the rocking of the rocking means 16, allowing the movable portion 18 to rock even within the recess 20.

[0038] In the vehicle seat 10, the rocking means 16 rocks around the pillar 43b where the drive mechanism 50 and the movable part 18 abut. The pillar 43b is positioned directly below the hip point N, which is the center of the rotation center points of the left and right thighs of the seated person H relative to the torso. This allows the rocking means 16 to rock the seated person H efficiently. Furthermore, because the movable part 18 is formed to have a large area and extends outward from the through-hole 22, rocking displacement can be applied to a wide area of ​​the buttocks and thighs of the seated person H, allowing the seated person H to rock efficiently.

[0039] The vehicle seat 10 of this embodiment has the following advantages.

[0040] The seat cushion 12 is provided with a seat back 14 that supports the back of the seated person H, a seat cushion 12 that supports the buttocks of the seated person H, frames 30, 73 that support the seat cushion 12 and the seat back 14, a through hole 22 that is formed by hollowing out a part of the seat surface of the seat cushion 12 or the seat back 14 and communicates with the seat frame 30, a drive mechanism 50 that is fixed to the seat frame 30 at a part corresponding to the through hole 22, and a rocking means 16 that has a movable part 18 that is supported by the drive mechanism 50 and abuts against the seated person H to transmit the rocking of the drive mechanism 50 to the seated person H, and the seat surface 12a is provided with a recess 20 that is recessed in the thickness direction around the through hole 22, and the movable part 18 extends around the through hole 22 and has a shape whose lower surface 18g follows the recess 20.

[0041] With the above-described configuration, the upper surface 18f of the movable portion 18 can be accommodated at approximately the same height as the seat surface of the seat cushion 12 or the seat back 14. As a result, even if a large movable portion 18 is provided, the seated occupant H can sit in the vehicle seat 10 without feeling uncomfortable.

[0042] In the vehicle seat 10 described above, the recess 20 may have an inclined surface whose depth in the thickness direction gradually increases as it approaches the through-hole 22. With this configuration, the movable part 18 can be housed compactly in the seat cushion 12 or the seat back 14.

[0043] In the vehicle seat 10 described above, the movable part 18 has a rigid member 43 provided on the lower surface 18g side and connected to the drive mechanism 50, a flexible member (cushion pad 48 and flexible plate 41) provided above the rigid member 43, and a skin 46 (friction reduction part 44) covering the outer surfaces of the flexible member and the rigid member 43, and at least the peripheral end of the movable part 18 on the lower surface 18g side is made up of the flexible member (cushion pad 48 and flexible plate 41). This makes the movable part 18 more flexible, improving its ability to follow the inclined surface of the recess 20 when it oscillates.

[0044] In the vehicle seat 10 described above, the lower surface 18g of the movable portion 18 may be covered with a friction reducing portion 44 having a smaller friction coefficient than the upholstery 25b constituting the seating surface 12a. By configuring it in this manner, the movable portion 18 becomes more easily movable, and the rocking displacement of the drive mechanism 50 can be efficiently transmitted to the seated occupant H.

[0045] In the vehicle seat 10 described above, the seat back 14 and the seat cushion 12 include cushion pads 25a, 71 fixed to the seat frames 30, 73, and skins 25b, 72 covering the cushion pads 25a, 71, and the skins 25b, 72 may be fixed to the ends of the through-holes 22. With this configuration, it is possible to prevent force from being applied from outside the vehicle seat 10 to the fixed portions of the skins 25b, 72.

[0046] In the vehicle seat 10 described above, the drive mechanism 50 includes a motor 52 that operates the movable part 18, and the seat frame 30 may be provided with a heat dissipation member at a position facing the motor 52. This configuration can prevent a decrease in the power of the motor 52 due to heating.

[0047] In the vehicle seat 10 described above, the heat dissipation member may be a fan 56 that supplies cooling air, and the center of rotation of the fan 56 may be located behind the recess 20. With this configuration, the fan 56 is located to avoid the recess 20, preventing interference between the recess 20 and the fan 56 and making the structure more compact.

[0048] The vehicle seat 10 described above may be provided with a first cover member 34 that covers the entire periphery of the side portion of the seat frame 30, and a space may be provided between the heat dissipation member (fan 56) and the first cover member 34. This allows heat from the motor 52 to be efficiently dissipated through the fan 56.

[0049] In the above-described vehicle seat 10, the drive mechanism 50 includes a motor 52 that operates the movable part 18, and the motor 52 may be provided at a position that avoids the recess 20. With this configuration, it is possible to prevent the thick motor 52 from protruding into the cushion pad 25a and causing discomfort to the seated occupant H.

[0050] In the vehicle seat 10 described above, the movable portion 18 and the recessed portion 20 may be formed in a generally triangular shape with rounded vertices in a plan view, with one of the vertices located forward. With this configuration, even if the movable portion 18 stops in a tilted state, it is possible to suppress the discomfort felt by the seated occupant H from the viewpoints of visual and seating comfort.

[0051] (Second embodiment) 12, in this embodiment, the recess 20A of the seat cushion 12 and the shape of the lower surface of the movable portion 18A are different from those of the recess 20 and the movable portion 18 of the first embodiment. Other parts are the same. The same components are denoted by the same reference numerals, and detailed description thereof will be omitted.

[0052] The recess 20A is formed with an inclination so that it becomes deeper in the thickness direction as it approaches the through-hole 22. In this embodiment, the recess 20A is formed in a stepped shape with a plurality of steps, and the stepped steps make it deeper in the thickness direction as it approaches the through-hole 22. The lower surface 18g side of the movable part 18A is formed in a stepped shape to match the shape of the recess 20A. The movable part 18A is accommodated in the recess 20A such that the steps of the movable part 18A and the steps of the recess 20A match.

[0053] The movable portion 18A and the recessed portion 20A of this embodiment also provide the same effects as the movable portion 18 and the recessed portion 20 of the first embodiment.

[0054] (Third embodiment) The movable part 18B of this embodiment is provided with a sensor 83 on the upper surface 18f that acquires biological information of the seated person H. The sensor 83 may be, for example, a strain sensor that measures the weight of the seated person H. The sensor 83 may also be a strain sensor or a piezoelectric sensor that detects vibrations caused by the heartbeat or breathing of the seated person H. The sensor 83 may also be a temperature sensor that detects the body temperature of the seated person H. Furthermore, the sensor 83 may be an electric field sensor or a magnetic sensor that detects nerve signals or electromyographic signals of the seated person H.

[0055] When multiple sensors 83 are provided, they may be configured as shown in the figure. Vertical wiring 81 and horizontal wiring 82 form a matrix wiring network 80, and sensors 83 are placed at the intersections of the vertical wiring 81 and horizontal wiring 82. Selectors (not shown) are connected to the vertical wiring 81 and horizontal wiring 82, and the selectors output detection signals from predetermined sensors 83. Electrical signals from the sensors 83 can be sent to a control circuit (not shown) via wiring 84.

[0056] According to this embodiment, even with the movable portion 18B, it is possible to detect biological information of the seated occupant H. The biological information can be used, for example, to provide an appropriate rocking motion to the seated occupant H with the movable portion 18B.

[0057] (Fourth embodiment) In this embodiment, a heater 88 is disposed around the recess 20 of the seat cushion 12B. The heater 88 is made of a heating wire that generates heat when an electric current is passed through it, and is routed around the recess 20 as shown in the figure. The heater 88 is disposed between the cushion pad 25a and the cover 25b. One end and the other end of the heater 88 are connected to connection terminals 89 at the rear end of the seat cushion 12. An electric current is supplied to the heater 88 via the connection terminals 89 from a vehicle or the like in which the vehicle seat 10 is installed. This allows the seated occupant H to be heated simultaneously with the rocking of the movable portion 18. Furthermore, by disposing the heater 88 away from the movable portion 18, it is possible to prevent a wire break due to the rocking.

[0058] While the present invention has been described above with reference to preferred embodiments, it goes without saying that the present invention is not limited to the above embodiments and various modifications are possible without departing from the spirit of the present invention. When rocking is not required, a triangular cushion pad not provided with a drive mechanism 50 may be attached to the recess 20 instead of the rocking means 16. In this case, the vehicle seat 10 can be used as a vehicle seat without a rocking function. [Explanation of symbols]

[0059] 10... Vehicle seat 12, 12B... Seat cushion 14...seat back 16...oscillating means 18, 18A, 18B... Movable parts 20, 20A... Recessed parts 22...Through hole 24...Storage portion 25a, 48, 71...Cushion pad 30, 73... Seat frame 41... Flexible plate 43...rigid member 50...drive mechanism 52...Motor 56...Fan

Claims

1. A seating device that supports a seated person, A seat frame positioned below the aforementioned seated person, A cushion pad that supports the seated person, A rigid member that supports the cushion pad and generates a swinging displacement in the cushion pad, including rotation or tilting relative to the seat frame, A flexible member is positioned between the rigid member and the cushion pad, configured to be flexibly deformable, and converts a portion of the displacement due to the inclination of the rigid member into horizontal displacement and transmits it to the cushion pad; A seating device equipped with a seat.

2. The seating device according to Claim 1, The rigid member is An upper end portion that contacts the flexible member and supports the flexible member, It comprises a column portion that protrudes downward from the upper end, The aforementioned column portion causes an inclined displacement at its upper end, in a seating device.

3. A seating device according to claim 1 or 2, Furthermore, the seating device includes a seat back connected to the seat frame and supporting the back of the occupant.

4. A seating device comprising a seat portion that supports a seated person, A drive mechanism that generates oscillating displacement, A support that receives the oscillation displacement of the aforementioned drive mechanism, A cushion pad, which is supported by the support and supports the seated person, The system comprises a covering member that covers the support and the cushion pad, A seating device wherein at least a portion of the covering member extends to a position on the lower surface side of the support that overlaps with the drive mechanism in the vertical direction.

5. The seating device according to claim 4, The aforementioned support is The plate-shaped upper end and It comprises a column portion that protrudes downward toward the drive mechanism from the upper end, The lower end of the covering member extends to the vicinity of the column, forming a seating device.

6. A seating device according to claim 4 or 5, Furthermore, it includes a housing section for housing the drive mechanism, A seating device wherein at least a portion of the covering member extends to a position that overlaps the housing portion in the vertical direction.

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