JP2012040996A - Shell type seat for vehicle - Google Patents

Abstract

A shell-type seat for a vehicle that reclines smoothly is provided.
A seat cushion frame and a seat back frame are coupled so as to be adjustable in angle. A seat cushion shell is provided on the seat cushion frame so as to be movable up and down. A slide mechanism that rotatably connects the seat cushion shell and the seat back shell, and further slidably connects the seat back frame and the seat back shell, is configured to be rotatable with respect to the seat back shell.
[Selection] Figure 1

Description

  The present invention relates to a vehicle shell-type seat having a seat shell.

  A so-called shell-type vehicle seat in which a seat shell is combined with a seat frame is considered as disclosed in Patent Document 1, for example. This vehicle-type shell seat is configured such that a seat shell having a shape along the back of the human body, for example, the back or the buttock, is assembled to a seat frame attached to a vehicle body, and an occupant is seated on the seat shell.

  This vehicle shell-type seat is formed such that an elastic member is provided between the seat frame and the seat shell so that the seating comfort is improved with appropriate elasticity. For example, an elastic member is provided on the seat cushion frame, and a seat cushion shell is placed on the elastic member, thereby supporting the seat cushion shell so as to be movable up and down, thereby improving sitting comfort. In recent years, there has been a demand for a lower floor of a seat cushion in a vehicle shell type seat.

Special table 2008-526425

  Conventionally, however, the position of the hinge center between the seat back shell and the seat cushion shell coincided with the center position of the angle adjustment mechanism of the seat frame. No longer match. Then, when the angle of the seat is adjusted, a twist occurs due to the difference in the center position, and an unreasonable force may be generated on the hinge or the like.

  For example, when the seat cushion shell is moved up and down, the seat cushion is lowered by, for example, supporting the seat cushion shell with a link mechanism and providing a thin elastic body widely under the seat cushion shell. The hinge position of the cushion shell may move in the front-rear direction, for example, with the operation of the link mechanism.

  Then, when the seat cushion shell moves up and down, the lower end of the seat back shell moves back and forth in addition to up and down, and the slide mechanism that operates the seat back shell in the up and down direction can handle the operation of the seat cushion shell. It was gone.

  In the present invention, in order to solve the above-described problems, the vehicle shell-type seat is configured as follows.

  The vehicle shell-type seat includes a seat frame that is attached to a vehicle body and a seat shell that is assembled to the seat frame. The seat frame includes a seat back frame and a seat cushion frame coupled to the seat back frame via an angle adjusting mechanism. The seat shell includes a seat cushion shell and a seat back shell coupled to the seat cushion shell via a hinge.

  A slide mechanism is provided between the seat back frame and the seat back shell. The slide mechanism is formed of a slide rail and a slider. For example, the slide rail is provided on the seat back frame and the slider is provided on the seat back shell. The slide rail is fixed at a predetermined angle with respect to the seat back frame.

  Thus, when the seat cushion shell moves up and down with respect to the seat cushion frame, the seat back shell moves in the vertical direction along the slide rail. Furthermore, the slider is configured to be rotatable with respect to the seat back shell.

  The seat cushion shell is attached to the seat cushion frame so as to be movable up and down. For example, a support panel is provided in the lower part of the seat cushion shell, and the seat cushion shell and the support panel are connected to each other so as to be vertically movable and tilted at an arbitrary angle by a connecting mechanism that tilts along the front-rear direction. A support pad made of an elastic body is disposed between the seat cushion shell and the support panel, and the seat cushion shell is elastically supported by the support pad.

  The vehicle shell type seat according to the present invention has the following effects.

  When the angle of the seat back is adjusted, due to the displacement of the pivot center position of the seat frame and the hinge center position of the seat shell, the position from the hinge center position of the seat shell before and after the angle adjustment to the connecting portion between the seat back shell and the seat back frame A change occurs in the distance. Further, there is a deviation in the angle of the slide rail at the connecting portion between the seat back shell and the seat back frame, as seen from the hinge center position of the seat shell before and after the angle adjustment.

  However, since the seat back shell is rotated with respect to the slider, the angle of the slider with respect to the seat back shell can be matched with the angle of the slide rail. As a result, the slider moves to a predetermined position along the slide rail, and the deviation caused by adjusting the angle of the seat frame is eliminated, and the seat is not twisted.

  Even if the seat cushion shell moves in the front-rear direction along with vertical movement, the seat back shell and the slider rotate, so the slider moves along the slide rail and the seat back shell rotates relative to the slider. The seat cushion shell moves following the movement of the seat cushion shell including the longitudinal movement, and the seat cushion shell is not twisted even by the vertical movement of the seat cushion shell.

It is a side view showing one embodiment of the shell type sheet for vehicles concerning the present invention. It is a front view which shows an attachment member. It is a front view which shows a slider. It is a front view which shows an attachment piece. It is a disassembled perspective view which shows a slide mechanism. It is a top view which shows the action | operation of a slide mechanism. It is a top view which shows the action | operation of a slide mechanism. It is a side view which shows a seat cushion shell unit. It is a disassembled perspective view which shows a seat cushion shell unit. It is a perspective view showing a shell type sheet for vehicles.

  An embodiment of a shell-type seat for a vehicle according to the present invention will be described with reference to the drawings.

  FIG. 10 shows a shell type sheet 10. The seat 10 is a vehicle seat and is an individual seat that is seated for each occupant, such as a driver seat or a passenger seat.

  The seat 10 includes a seat frame 12, a front / rear position adjustment mechanism 14, a seat shell 16, a height position adjustment mechanism, an outer cover material 20, and the like. Hereinafter, the seat 10 will be described assuming that the forward direction of a vehicle (not shown) to which the seat 10 is attached is the front, the front, rear, left, and right are defined, the direction of gravity is the lower, and the opposite is the upper.

  As shown in FIG. 1, the seat frame 12 includes a seat cushion frame 22 and a seat back frame 24. The seat cushion frame 22 includes a pair of side cushion frames 23 provided on the left and right sides, a submarine pipe 32 that connects the left and right side cushion frames 23, a rear link pipe 34, and the like.

  The submarine pipe 32 is provided in front of the side cushion frame 23 and connects the left and right sides of the side cushion frame 23. The rear link pipe 34 is provided behind the side cushion frame 23 and connects the left and right sides of the side cushion frame 23. The side cushion frames 23 are respectively attached to the slide bars 31 via height position adjusting mechanisms (not shown).

  A seat back frame 24 is rotatably connected to the rear end of the seat cushion frame 22. An angle adjustment mechanism 52 is provided between the seat cushion frame 22 and the seat back frame 24, and the seat back frame 24 is rotated with an appropriate frictional force by operating a lever (not shown) of the angle adjustment mechanism 52. It is fixed at a desired angle while moving, that is, tilting along the front-back direction. The angle adjustment of the seat back frame 24 may be performed electrically.

  As shown in FIG. 10, the seat back frame 24 includes a side frame 54 positioned on the left and right, an upper frame 56 positioned on the upper portion, and the like. A pair of side frames 54 are provided on the left and right, and are connected to the seat cushion frame 22. The upper frame 56 is provided on the upper part of the side frame 54 and fixes the left and right side frames 54 at the upper part. A headrest holding portion 57 (see FIG. 1) is attached to the side frame 54, and the headrest 100 is attached via the headrest holding portion 57.

  A slide mechanism 58 is provided between the seat back frame 24 and the seat back shell 28. The slide mechanism 58 includes a slide rail 60, an attachment member 62, a slider 66, and an attachment piece 68.

  The attachment member 62 is formed in a shape as shown in FIG. 2 and is provided between the side frame 54 and the upper frame 56. The attachment member 62 can be plastically deformed and has a predetermined energy absorption capability. A slide rail 60 is attached to the central portion of the attachment member 62.

  As shown in FIG. 5, the slide rail 60 has a hat shape in cross section, and both ends are fixed to the mounting member 62 by rivets or the like. The attachment member 62 extends in a predetermined shape from a fixed portion of the slide rail 60, one end is screwed to the upper frame 56, and the other end is screwed to the side frame 54. A slider 66 described later is slidably attached to the slide rail 60.

  The front-rear position adjusting mechanism 14 is provided at the lower part of the seat frame 12. As shown in FIG. 10, the front / rear position adjusting mechanism 14 includes two guide rails 30, an engagement mechanism 17, an attachment leg 35, and the like. The two guide rails 30 are arranged in parallel along the longitudinal direction of the vehicle and at a predetermined interval, and are fixed on the floor (not shown) of the vehicle by screws or the like inserted into the mounting legs 35. Yes.

  A slide bar 31 is movably held on the guide rail 30. Notches (not shown) are formed in the slide bar 31 at a predetermined interval, and the slide bar 31 is engaged by engaging a claw portion (not shown) of the engagement mechanism 17 with the notch. Is fixed in place. An operation bar 36 for operating the claw portion of the engagement mechanism 17 is provided in front of the lower portion of the seat 10. The front-rear position adjusting mechanism 14 may be an electric drive type using an electric motor.

  A height position adjusting mechanism is provided between the slide bar 31 and the seat cushion frame 22. The height position adjusting mechanism includes, for example, a parallel link 19 and a driving mechanism. The parallel links 19 are provided at the front and rear ends of the left and right side cushion frames 23 and connect the left and right slide bars 31 to the side cushion frames 23. The parallel link 19 moves the seat cushion frame 22 up and down while maintaining a state parallel to the slide bar 31. The drive mechanism is, for example, a dial-type link operating mechanism 21, which sets any one of the parallel links 19 at an arbitrary angle and moves the seat cushion frame 22 up and down with respect to the slide bar 31.

  A seat shell 16 is attached to the seat frame 12. As shown in FIGS. 1 and 10, the seat shell 16 includes a seat cushion shell 26 and a seat back shell 28.

  The seat cushion shell 26 is made of a hard synthetic resin material or the like, and is formed in a shape of the human body mainly from the buttocks to the thighs. On the lower surface of the seat cushion shell 26, as shown in FIG. 9, mounting pieces 43 are provided at four locations.

  Like the seat cushion shell 26, the seat back shell 28 is made of a hard synthetic resin material or the like, and is formed in a shape along the back of the human body. The seat back shell 28 is attached to the slide rail 60 via the slider 66 of the slide mechanism 58.

  As shown in FIG. 5, the slider 66 has a C-shaped cross section and is attached to the attachment piece 68. Inside the slider 66, the slide rail 60 is accommodated so as to be relatively movable. The attachment piece 68 has a first attachment surface 70 and a second attachment surface 71, and is screwed to the seat back shell 28 using a hole 73 formed in the first attachment surface 70. When the first mounting surface 70 is screwed to the seat back shell 28, the second mounting surface 71 is in a direction along the front-rear direction of the vehicle. On the second mounting surface 71. As shown in FIG. 4, a circular screw hole 72 is formed at the center, and oval holes 74 are formed above and below the screw hole 72, respectively.

  As shown in FIGS. 3 and 5, the slider 66 has screws 67 fixed at three locations by caulking or the like. The central screw 67 is screwed into the central screw hole 72 of the mounting piece 68 so that the mounting piece 68 and the slider 66 can rotate relative to each other. The upper and lower screws 67 pass through the oval holes 74 of the attachment pieces 68, respectively. The slider 66 and the attachment pieces 68 are screwed so as to be rotatable within the range of the holes 74. 6 and 7 show the rotating state of the slider 66 and the mounting piece 68. FIG.

  One of hinges 33 is attached to the rear of the seat back shell 28 and is connected to the other of the hinges 33 attached to the seat cushion shell 26. The seat back shell 28 can be tilted by the hinge 33 along the front-rear direction about the hinge 33. The material of the seat cushion shell 26 and the seat back shell 28 is not limited to a synthetic resin material, and may be a light alloy material such as aluminum, an FRP material, wood, or the like, and is not particularly limited.

  The jacket material 20 is provided in the outermost layer of the sheet 10 as shown in FIG. An elastic material or the like may be appropriately interposed between the jacket material 20 and the seat shell 16. The seat cushion shell 26 is attached to the seat cushion frame 22 as a seat cushion shell unit 50 together with a support pad 42 made of an elastic body.

  Next, the seat cushion shell unit 50 will be described.

  The seat cushion shell unit 50 is shown in FIGS. The seat cushion shell unit 50 includes a seat cushion shell 26, a support panel 38, a coupling mechanism 40, a support pad 42, and the like.

  The support panel 38 is a plate-like member as shown in the figure, and mounting pieces 41 are provided at four corners. The attachment piece 41 is provided corresponding to the attachment piece 43 of the seat cushion shell 26, and a connection piece 45 is provided between the attachment piece 41 and the attachment piece 43 to constitute the connection mechanism 40. Each coupling mechanism 40 can be bent independently, and the seat cushion shell 26 and the support panel 38 are coupled to each other by each coupling mechanism 40 so as to be vertically movable and tilted at an arbitrary angle.

  The support pad 42 is a sponge-like member made of a soft foam synthetic resin material or the like, and is disposed between the seat cushion shell 26 and the support panel 38 as shown in FIG. The seat cushion shell 26 is provided with appropriate elasticity and repulsive force by the support pad 42.

  The support pad 42 may be a metal spring, an air spring, a hydraulic cushion or the like, not a soft foam synthetic resin material, and the material, mechanism, etc. are not particularly limited.

  As shown in FIG. 1, the support panel 38 has a front end portion 44 fixed to the submarine pipe 32 of the seat frame 12 with a screw or the like, and a rear end portion 46 hooking the rear link pipe 34 with a screw or the like or a curved portion. It is attached by. Accordingly, the seat cushion shell unit 50 is attached to the seat frame 12, that is, the seat cushion frame 22.

  When an occupant sits on the seat 10 and the vehicle moves up and down, for example, the seat cushion shell 26 moves up and down relative to the support panel 38. Then, each coupling mechanism 40 provided between the seat cushion shell 26 and the support panel 38 is appropriately operated, the support pad 42 is elastically deformed, and the impact of the seat cushion shell 26 is moderated moderately together with the occupant. Moves up and down and provides good sitting comfort.

  Next, the operation and effect of the sheet 10 will be described.

  When the angle adjustment mechanism 52 is operated, the seat back frame 24 is rotated together with the seat back shell 28, and the seat 10 is in a reclining (angle adjustment) state. At that time, the seat back shell 28 tilts following the seat back frame 24 because the slider 66 is engaged with the slide rail 60.

  On the other hand, in the seat 10, the center position of the angle adjustment mechanism 52 that connects the seat cushion frame 22 and the seat back frame 24 and the position of the hinge 33 that connects the seat cushion shell 26 and the seat back shell 28 are described. They do not match and are set at positions that are separated by a predetermined distance.

  The seat back frame 24 and the seat back shell 28 are connected by a slider 66 engaged with the slide rail 60. Therefore, in the state before the angle adjustment, from the position of the hinge 33 that connects the seat back shell 28 and the seat cushion shell 26 to the position where the seat back shell 28 and the seat back frame 24 are engaged. The distance and the distance from the position of the hinge 33 in the state after the angle adjustment to the position where the seat back shell 28 and the seat back frame 24 are engaged are different.

  In addition, the inclination angle of the slide rail 60 with respect to the seat back shell 28 as viewed from the position of the hinge 33 in the state before the angle adjustment, and the seat back shell 28 as viewed from the position of the hinge 33 in the state after the angle adjustment. The inclination angle of the slide rail 60 with respect to is different.

  Therefore, the difference in the distance before and after the angle adjustment is eliminated if the slider 66 moves on the slide rail 60, but the slide rail 60 relative to the seat back shell 28 as viewed from the position of the hinge 33 in the state after the angle adjustment. Since the inclination angles are different, the slider 66 cannot move on the slide rail 60 as it is.

  However, when the slider 66 rotates with respect to the attachment piece 68, the inclination angle of the slider 66 with respect to the seat back shell 28 can be adjusted to the inclination of the slide rail 60. Thereby, the slider 66 can be moved along the slide rail 60, and the difference before and after the angle adjustment of the distance from the hinge 33 to the position where the seat back shell 28 and the seat back frame 24 are engaged is eliminated. Yes, it won't cause a twist by adjusting the angle.

  Further, the above example is not limited to the reclining that moves the seat back frame 24 backward, and even when the seat back shell 28 is moved forward, the twisting due to the difference between the center position of the angle adjustment mechanism 52 and the center position of the hinge 33, etc. Is not generated as in the above example.

  Further, the seat cushion shell 26 is connected to the support panel 38 by the connecting mechanism 40 and is moved up and down according to the link operation of the connecting mechanism 40. Since the coupling mechanism 40 moves the seat cushion shell 26 up and down using the coupling piece 45, the movement of the seat cushion shell 26 is not a linear motion along the vertical direction, but a vertical motion using a part of a circular motion. It becomes.

  Accordingly, for example, when the seat cushion shell 26 moves up and down during traveling, the hinge 33 that connects the seat cushion shell 26 and the seat back shell 28 similarly performs a circular motion according to the movement of the seat cushion shell 26.

  On the other hand, the seat back shell 28 only moves up and down linearly along the slide direction of the slide rail 60, and the seat back shell 28 does not follow the movement of the hinge 33 as it is. However, when the seat back shell 28 rotates by a predetermined amount with respect to the slider 66, the lower end of the seat back shell 28, that is, the hinge 33 moves along the slide rail 60 by the slider 66 even if the hinge 33 moves circularly by the connecting mechanism 40. In addition to the vertical movement, the rotational movement of the seat back shell 28 with respect to the slider 66 causes the seat back shell 28 to follow the vertical movement of the seat cushion shell 26 without causing a twist or the like.

  In addition, the seat cushion shell unit 50 has the front end portion 44 and the rear end portion 46 fixed to the seat frame 12 so that the seat cushion shell 26 is attached to the seat frame 12, so that the seat cushion does not correspond to a conventional shell type. Attached to the frame.

  Further, since the support panel 38 extends long in the front-rear direction of the seat cushion shell 26, the support pad 42 can be widely disposed including the lower portion of the seat cushion shell 26, particularly the thigh of the occupant. The load is effectively distributed. Further, since the support pad 42 is thinned widely, the sheet 10 can be thinned.

  In the unlikely event that the vehicle is rear-projected, the mounting member 62 is plastically deformed and the seat back shell 28 is moved backward with respect to the seat back frame 24, so that the headrest 100 moves forward relatively and the head of the occupant The part can be supported from the rear, and the so-called whiplash phenomenon can be alleviated.

  The vehicle shell-type seat 10 according to the present invention may be a seat on which a plurality of people are seated. The seat 10 is not limited to a so-called automobile seat.

  The present invention is applicable to a vehicle shell type seat having a seat shell.

DESCRIPTION OF SYMBOLS 10 ... Seat 12 ... Seat frame 16 ... Seat shell 17 ... Engagement mechanism 19 ... Parallel link 22 ... Seat cushion frame 23 ... Side cushion frame 24 ... Seat back frame 26 ... Seat cushion shell 28 ... Seat back shell 33 ... Hinge 38 ... Support panel 40 ... coupling mechanism 41 ... mounting piece 42 ... support pad 43 ... mounting piece 45 ... coupling piece 50 ... seat cushion shell unit 52 ... angle adjustment mechanism 60 ... slide rail 62 ... mounting member 66 ... slider 67 ... screw 68 ... mounting Piece 70: First mounting surface 71: Second mounting surface 72: Screw hole 74: Hole

Claims (3)

A vehicle shell type seat comprising a seat frame and a seat shell provided on the seat frame,
The seat frame includes a seat cushion frame, and a seat back frame coupled to the seat cushion frame so as to be adjustable in angle.
The seat shell includes a seat cushion shell provided on the seat cushion frame so as to be movable in the vertical direction, and a seat back shell rotatably connected to the seat cushion shell,
Further, the seat back shell is slidably connected to the seat back frame via the sliding mechanism along the seat back frame, and the sliding mechanism and the seat back shell, or the sliding mechanism. A shell-type seat for a vehicle, wherein the seat back frame is rotatably connected, and the sliding direction of the seat back shell and the seat back frame is formed so that the angle can be changed.   2. The vehicle shell type seat according to claim 1, wherein the seat cushion shell is coupled to the seat cushion frame by a coupling mechanism that rotates along a front-rear direction.   3. The vehicle shell type seat according to claim 1, wherein the sliding mechanism includes a member that is plastically deformed when a predetermined load is applied to the seat back shell from the front.

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