JP2010148777A - Seat apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To retain the rigidity of a tilt-up mechanism while reducing the weight of the mechanism. <P>SOLUTION: The seat apparatus includes a seat bottom and the tilt-up mechanism for adjusting the inclination angle of the seat bottom by moving the front end of the seat bottom in the vertical direction. A support base of the tilt-up mechanism includes a pair of left and right side frames disposed to be spaced apart from each other, a rear frame laid to the rear parts of the pair of side frames, and a front frame laid to the front parts of the pair of side frames. A reinforcing member for coupling the front frame and the rear frame with each other to be reinforced is laid between the front frame and the rear frame. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a seat device provided with a tilt-up mechanism.

2. Description of the Related Art Conventionally, a seat apparatus used for a vehicle such as a vehicle includes a pair of side frames that are spaced apart from each other on an indoor floor of the vehicle, and a seat bottom that has a cushion pad provided on top of the pair of side frames. And a legrest (for example, refer to Patent Document 1). The legrest may be folded to the lower side of the seat bottom or may be lifted forward from the front portion of the seat bottom. When the legrest is raised forward, the seated person can throw the leg forward and place it on the legrest. In recent years, a seat apparatus equipped with a tilt-up mechanism in which the front end portion of the seat bottom is displaced upward so as to be in a so-called tilt-up state is also known in order to enhance the comfortability.
JP 2008-049066 A

  Here, in the conventional tilt-up mechanism, a plate-like support base is mounted in order to maintain rigidity even when the passenger's leg is supported, but the plate-like support base inhibits weight reduction. It becomes one factor. Therefore, an object of the present invention is to provide a seat device that can maintain the rigidity of the tilt-up mechanism while reducing the weight.

The seat device according to the invention of claim 1
Seat bottom,
A tilt-up mechanism that is mounted on the seat bottom and adjusts the tilt angle of the seat bottom by moving the front end of the seat bottom up and down; and
The tilt-up mechanism is
A support for raising and lowering the front end of the seat bottom;
A crank part for adjusting the inclination angle of the seat bottom by adjusting the vertical position of the support base,
The support base is
A pair of left and right side frames spaced from each other;
A rear frame that spans the rear of the pair of side frames and engages the crank portion;
A front frame that spans the front of the pair of side frames,
A reinforcing member that connects and reinforces the front frame and the rear frame is spanned between the front frame and the rear frame.

The invention according to claim 2 is the seat apparatus according to claim 1,
A leg rest provided so as to be able to undulate in a state where it hangs down from the front end of the seat bottom and a state where it rises forward from the front end of the seat bottom;
A legrest drive mechanism for driving the legrest,
The legrest drive mechanism is attached to the reinforcing member.

The invention according to claim 3 is the seat apparatus according to claim 2,
A pair of attachment portions for the reinforcing member in the legrest drive mechanism are provided with a space left and right with respect to each other,
A second reinforcing member is stretched between the pair of mounting portions.

The invention according to claim 4 is the seat device according to claim 2 or 3,
The legrest drive mechanism is
In order to support the legrest, the legrest has a pair of left and right support frames that are spaced apart from each other.
A connecting frame for connecting the pair of support frames is spanned between the pair of support frames.

Invention of Claim 5 is a sheet | seat apparatus as described in any one of Claims 1-4,
A plurality of the reinforcing members are provided with a predetermined interval between the front frame and the front rear frame,
A connecting member that connects the plurality of reinforcing members is spanned between the plurality of reinforcing members.

The invention according to claim 6 is the seat device according to any one of claims 1 to 5,
The reinforcing member is plate-shaped.

The invention according to claim 7 is the seat device according to any one of claims 1 to 6,
The reinforcing member is arranged on both sides of the front frame and the rear frame.

The invention according to claim 8 is the seat device according to any one of claims 1 to 7,
The reinforcing member is arranged at a central portion of the front frame and the rear frame.

The invention according to claim 9 is the seat device according to any one of claims 1 to 8,
The reinforcing member extends forward from the front frame.

  According to the first aspect of the present invention, since the support base of the tilt-up mechanism is formed in a frame shape by the pair of left and right side frames, the front frame, and the rear frame, it is lighter than the plate-shaped support base. Can be And since the reinforcement member which connects and reinforces these front frames and rear frames is spanned between the front frame and the rear frame, the rigidity can be maintained. Accordingly, it is possible to provide a seat device that maintains the rigidity of the tilt-up mechanism while reducing the weight.

  According to the second aspect of the present invention, since the legrest drive mechanism is attached to the reinforcing member, the legrest drive mechanism is attached more than when attached to the pair of left and right side frames, the front frame and the rear frame. Stiffness can be improved. In addition, since the tilt-up mechanism and the leg rest mechanism are thereby integrated, even if the tilt angle of the tilt-up mechanism varies, the positional relationship between the tilt-up mechanism and the leg rest mechanism is constant, and the seated person It is possible to prevent the user from feeling uncomfortable.

  According to the third aspect of the present invention, since the reinforcing member is stretched between the pair of attachment portions in the legrest driving mechanism, the rigidity can be further strengthened.

  According to the fourth aspect of the present invention, since the portion supporting the legrest is formed in a frame shape, the legrest drive mechanism can also be reduced in weight. Here, if the legrest drive mechanism is simply reduced in weight, there is a fear that strength may be caused. However, as in the invention described in claim 4, the connection frame is stretched over the pair of left and right support frames. Therefore, the rigidity of the pair of support frames can be increased by the connection frame.

  According to the fifth aspect of the present invention, since the connecting member is spanned between the plurality of reinforcing members, the rigidity of the reinforcing member is also increased, and the rigidity of the support base can be further increased.

  According to invention of Claim 6, since a reinforcement member is plate shape, the intensity | strength of reinforcement member itself can be raised and rigidity can be made stronger.

  According to the seventh aspect of the present invention, since the reinforcing members are disposed on both sides of the front frame and the rear frame, the rigidity of the front frame and the rear frame can be further increased.

  According to the eighth aspect of the invention, since the reinforcing member is disposed at the center of the front frame and the rear frame, the rigidity of the front frame and the rear frame can be further increased.

  According to the ninth aspect of the present invention, since the reinforcing member extends forward from the front frame, the legrest can be accommodated in the forward extending portion.

  Hereinafter, preferred embodiments for carrying out the present invention will be described with reference to the drawings. However, although various technically preferable limitations for implementing the present invention are given to the embodiments described below, the scope of the invention is not limited to the following embodiments and illustrated examples.

  FIG. 1 is a perspective view of the sheet apparatus 1, and FIG. 2 is a front view of the sheet apparatus 1. The seat device 1 is installed in a vehicle, a ship, an airplane, or other vehicle interior. The seat device 1 includes a seat bottom 2, a backrest 3, a legrest 4, and the like.

  The seat bottom 2 is installed on the indoor floor of the vehicle via the front / rear position adjustment mechanism 5. The backrest 3 is provided in a standing state at the rear end portion of the seat bottom 2. The backrest 3 and the seat bottom 2 are connected by a reclining mechanism 6.

The legrest 4 is connected to the front portion of the seat bottom 2 via a legrest driving mechanism 7 for driving the legrest 4 (shown in FIG. 3). The legrest drive mechanism 7 includes an undulation mechanism 20 and a slide mechanism 30.
The hoisting mechanism 20 makes the legrest 4 hang down from the front end of the seat bottom 2 on the front side of the seat bottom 2 or raises the leg rest 4 forward from the front end of the seat bottom 2. Further, the slide mechanism 30 slides the legrest 4 in the front-rear direction with respect to the seat bottom 2.

Next, the seat bottom 2 will be described.
3 is an exploded perspective view showing the seat bottom 2, the hoisting mechanism 20, the slide mechanism 30, and the legrest 4 when viewed from the upper right diagonally front, and FIG. 4 shows only the frame portion 40 of the seat bottom 2 in an enlarged manner. It is a disassembled perspective view. The seat bottom 2 is generally composed of a lower frame portion 40 and a cushion pad 47 extending from the upper portion to the side surface of the frame portion 40.

  As shown in FIG. 4, a pair of left and right side frames 41 are provided in parallel on the left and right sides of the frame portion 40 so as to be spaced apart from each other. The side frame 41 is a side frame of the seat bottom 2 and is slidably mounted on the front / rear position adjusting mechanism 5. A connecting rod 42 is connected to the rear part of the left and right side frames 41, and the reclining mechanism 6 is attached. A cushion spring 43 is stretched between the left and right side frames 41.

  The reclining mechanism 6 has a rotating shaft 6a, a plate 6b, a spring 6c, and an adjuster knob 6d. A plate 6b is rotatably attached to both ends of the rotating shaft 6a, and a screw hole is formed at the tip of the plate 6b. The frame of the backrest 3 is screwed to the plate 6b through this screw hole. Further, projections are provided in the vicinity of the screw holes of the left and right plates 6b, and one end of a spring 6c attached to the rear portion of the outer surface of the side frame 41 is fixed thereto. Thereby, the plate 6b is urged | biased toward the direction which the arrow A of FIG. 4 shows centering on the rotating shaft 6a. An adjuster knob 6d is attached to the outer side surface of the side frame 41 so that the inclination of the backrest 3 can be adjusted. Specifically, when the backrest 3 is pushed backward while pulling the adjuster knob 6d, the backrest 3 can be tilted backward, and when the adjuster knob 6d is pulled without applying force to the backrest, the backrest 3 Is tilted forward by the biasing force of the spring 6c. If the adjuster knob 6d is returned to the original position when the backrest 3 is inclined at an arbitrary angle, the backrest 3 can be stopped at that position.

  The cushion spring 43 is a corrugated steel wire, and a plurality of cushion springs 43 are stretched around the left and right side frames 41. The cushion pad 47 is placed on the side frame 41 and the cushion spring 43. The cushion spring 43 can be expanded and contracted to absorb the vibration during traveling of the vehicle together with the cushion pad 47.

  In addition, a tilt-up mechanism 8 that adjusts the tilt angle of the seat bottom 2 by moving the front end portion of the seat bottom 2 up and down is mounted on the seat bottom 2. The tilt-up mechanism 8 is provided with a crank part 81 and a support base 82.

  The crank portion 81 adjusts the vertical position of the support base 82. The crank part 81 includes a crank 811 and an operation part 812. The crank 811 includes an operating rod 811a extending in the left-right direction, an arm 811b extending at a right angle from both ends thereof, and a shaft 811c extending outward from the tip of the arm 811b so as to be parallel to the operating rod 811a. The shafts 811c at both ends of the crank 811 are rotatably connected to the holes of the left and right side frames 41, respectively. As a result, the crank 811 is stretched over the left and right side frames 41.

  The operation portion 812 is engaged with the crank 811 via the side portion of the side frame 41. By operating this operation unit 812, the shaft 811c is rotated, and the operating rod 811a can be moved up and down.

  The support base 82 is disposed at the front portion of the side frame 41, and raises and lowers the front end portion of the seat bottom 2 from the inside of the seat bottom 2. The support base 82 also functions as a front frame of the seat bottom 2. The support base 82 includes a pair of left and right side frames 821, a front frame 822, a rear frame 823, a reinforcing member 824, and a connecting member 825.

  A rod-shaped front frame 822 is stretched over the front portions of the pair of side frames 821. On the other hand, a rod-shaped rear frame 823 is stretched over the rear portions of the pair of side frames 821. Two reinforcing members 824 are stretched across the front frame 822 and the rear frame 823 in the front-rear direction, and the reinforcing members 824 are arranged on the left and right sides with a gap therebetween. The reinforcing member 824 is a plate-like member that is flat in the horizontal direction of the cushion pad 47. Note that the number of reinforcing members 824 installed is not limited to two, and may be one or three or more.

Two fixing holes 824a for fixing the legrest driving mechanism 7 are formed in the rear portion of the reinforcing member 824.
In addition, the front portion of the reinforcing member 824 extends forward from the front frame 822. A hole for weight reduction may be formed in the front portion of the reinforcing member 824. A connecting member 825 for connecting the reinforcing members 824 is spanned between the two reinforcing members 824. The connection member 825 includes a first connection bar 825 a that extends between the front ends of the two reinforcing members 824 and the front frame 822, and a second connection that extends between the intermediate portions of the two reinforcing members 824. It has a bar 825b and a first connecting bar 825a, a third connecting bar 825c spanned between the front frame 822 and the rear frame 823. The third connecting rod 825c functions as a reinforcing member disposed at the center of the front frame 822 and the rear frame 823. The diameters of these connecting rods 825a, 825b, and 825c are set smaller than the diameters of the front frame 822 and the rear frame 823. The connecting rods 825a, 825b, and 825c can also be arranged in a truss shape. In this case, stronger rigidity can be ensured.

  The rear end portions of the left and right side frames 821 of the support base 82 and the inner front portions of the left and right side frames 41 are connected by a connecting portion 41a, and the support base 82 is rotatable about the connecting portion 41a. Yes. At this time, as shown in FIG. 5, the rear portion of the side frame 821 fits between the left and right side frames 41, and the front portion of the side frame 821 protrudes obliquely upward from the upper edge of the side frame 41. Since the front portions of the reinforcing member 824 and the connecting member 825 of the support base 82 extend forward from the front frame 822, they are always positioned above and in front of the front end of the side frame 41.

  The rear frame 823 of the support 82 is placed on the arm 811 b of the crank 811 and is engaged with the crank 811. As a result, the support base 82 rotates around the connecting portion 41a in accordance with the rotation of the crank 811, and the vertical position thereof is adjusted. Specifically, when the crank 811 rotates and the operating rod 811a rises, the rear frame 823 is pushed from below by the operating rod 811a and the arm 811b, and the support base 82 has the reinforcing member 824 and the connecting member 825 around the connecting portion 41a. Rotate in the direction that the front part of the When the operating rod 811a is lowered, the support base 82 rotates in a direction in which the front portions of the reinforcing member 824 and the connecting member 825 are lowered by its own weight. With this operation, the vertical position of the front portion of the support 82 can be adjusted.

  The cushion pad 47 is provided on the side frame 41 and the cushion spring 43 so as to cover the side frame 41 and the cushion spring 43 from the side surfaces of the left and right side frames 41. Further, the front and rear length of the cushion pad 47 is larger than the front and rear length of the side frame 41, and the front portion of the cushion pad 47 extends ahead of the front end of the side frame 41. The front portion of the cushion pad 47 covers the support table 82 from the side surface of the support table 82. As a result, the front portion of the cushion pad 47 moves up and down by adjusting the vertical position of the support base 82 described above. That is, the inclination angle of the seat bottom 2 is adjusted by adjusting the vertical position of the support base 82.

  The cushion pad 47 is formed by covering a urethane foam material with a skin. Further, as shown in FIG. 2, the left and right sides of the front portion of the cushion pad 47 hang down from the left and right sides of the upper surface of the support base 82, so that the front side of the side frame 41 is below the support base 82. A space S is formed. This space S is recessed greatly behind the front end of the cushion pad 47 between the side frames 41.

  FIG. 6 is a schematic top view of the sheet apparatus 1. As shown in FIGS. 2 and 6, the central portion of the upper surface of the cushion pad 47 is a seat surface 48, and the seat surface 48 is formed from the rear end to the front end of the cushion pad 47. Bank portions 49 are formed on the left and right sides of the seat surface 48. The bank portion 49 is formed from the rear end to the front end of the cushion pad 47. The bank 49 protrudes higher than the seat surface 48. The left and right widths of the seating surface 48 gradually increase from the rear to the front, and the left and right widths of the bank portion 49 gradually decrease from the rear to the front.

Next, the legrest drive mechanism 7 and the legrest 4 will be described.
FIG. 7 is an exploded perspective view showing the legrest driving mechanism 7 and the legrest 4 in an enlarged manner. The raising / lowering mechanism 20 of the legrest drive mechanism 7 is attached to the lower part of the support base 82. The hoisting mechanism 20 is a link mechanism and has a pair of links 21, 22, 23, 24, 25, 26 on the left and right. The link 21 is a fixed link, and this link 21 is attached to the lower surface of the reinforcing member 824. Specifically, a screw hole 21a is formed on the upper surface of the link 21, and the link 21 is aligned with the lower surface of the reinforcing member 824 so that the screw hole 21a communicates with the fixing hole 824a, and screwed. The link 21 and the reinforcing member 824 are connected (see FIGS. 3 and 4). A second connecting rod 825b is spanned between the links 21. That is, the pair of links 21 is an attachment portion for the reinforcing member 824 in the legrest drive mechanism 7, and the second connecting bar 825 b is a second reinforcement member that is spanned between the pair of attachment portions.
Further, one end of the link 22 is rotatably connected to the front upper portion of the link 21. The other end of the link 22 is rotatably connected to one end of the link 23. The other end of the link 23 is rotatably connected to one end of the link 26. The other end of the link 26 is rotatably connected to one end of the link 24. The other end of the link 24 is rotatably connected to one end of the link 25. The other end of the link 25 is rotatably connected to the lower rear portion of the link 21. The link 22 and the link 24 intersect with each other when viewed from the right or left, and the link 24 and the link 22 are rotatably connected at the intersection. When the hoisting mechanism 20 is folded and fits in the lower part of the seat bottom 2, the link 26 extends vertically, and when the hoisting mechanism 20 is deployed forward from the seat bottom 2, the link 26 extends front and rear. . As shown in FIG. 5, the links 21 to 26 of the hoisting mechanism 50 are disposed between the left and right side frames 41.

  As shown in the top view of FIG. 9, a connecting rod 25a is connected between the left and right links 25, and a length adjusting mechanism 27 (shown in FIG. 9 and the like) is provided between the connecting rod 25a and the connecting rod. It has been. The length adjusting mechanism 27 is a gas damper and includes a piston 27a and a cylinder 27b. The distal end of the piston 27a is rotatably connected to the connecting rod 25a, and the base end portion of the cylinder 27b is rotatably connected to the connecting rod 42. The length from the tip of the piston 27a to the base end of the cylinder 27b is adjusted by the piston 27a being pulled out of the cylinder 27b or pulled into the cylinder 27b. The length adjusting mechanism 27 is kept constant by being locked, and can be expanded and contracted by releasing the lock. Specifically, when the length adjusting mechanism 27 is locked, the air in the cylinder 27b is sealed and the piston 27a is fixed. On the other hand, when the length adjusting mechanism 27 is unlocked, the inside of the cylinder 27b is The air is released, and the piston 27a can advance and retract with respect to the cylinder 27b. Note that the length adjusting mechanism 27 is also locked / unlocked by the operation portion 812 attached to the side portion of the side frame 41.

  As shown in FIG. 7, the slide mechanism 30 of the legrest drive mechanism 7 includes a base 31, a pair of left and right linear guides 32, and a slider 33. The base portion 31 supports the legrest 4 and has a pair of left and right support frames 311 that are arranged with a space left and right with respect to the legrest 4. Between the pair of support frames 311, three connection frames 312 that connect the support frames 311 are spanned. In addition, an auxiliary frame 313 is connected to the middle portion of the three connection frames 312. Note that the connecting frame 312 and the auxiliary frame 313 may be arranged in a truss shape. In this case, stronger rigidity can be ensured.

  The linear guide 32 includes a slide rail 32a and a carriage 32b provided to be slidable with respect to the slide rail 32a. The slide rails 32 a of the linear guide 32 are fixed to the left and right support frames 311 on the back surface of the base portion 31, and the slide rails 32 a are parallel to the link 26 of the hoisting mechanism 20. A carriage 32 b of the linear guide 32 is fixed to the slider 33 on the back side of the base portion 31. The right slider 33 extends to the right from the right end of the base 31, and the left slider 33 extends to the left from the left end of the base 31. Since the carriage 32 b of the linear guide 32 is slidable along the slide rail 32 a, the slider 33 can be moved in a direction parallel to the link 26 by the linear guide 32.

  The legrest 4 has a frame 4a (shown in FIG. 10) therein. The frame 4 a of the leg rest 4 is fixed to these sliders 33 in a state where the frame 4 a is stretched between the left and right sliders 33 on the front side of the base 31. Therefore, the legrest 4 is integrated with the slider 33 and can move in a direction parallel to the link 26. As shown in FIG. 7, the front surface, the lower surface, and the left and right side surfaces of the frame 4a in a state where the undulation mechanism 20 is closed and the leg rest 4 is suspended are covered with urethane foam material and further covered with a skin.

Two depressions 4b are formed on the left and right of the front surface of the legrest 4 in a state where the legrest 4 is suspended (the upper surface of the legrest 4 when the legrest 4 is lifted forward). The dent 4b is a cylindrical surface-like dent, and extends in the vertical direction. Accordingly, when the legrest 4 is raised forward, the front side of the legrest 4 faces upward (see FIG. 6) and the recess 4b extends in the front-rear direction, so that the seated person puts the leg in the recess 4b. Can be placed. Therefore, it is difficult for the seated person's leg to slip off the leg rest 4. The recess 4b is formed by molding a urethane foam material of the legrest 4.

  As shown in FIGS. 2 and 6, the left and right lateral width of the legrest 4 is larger than the left and right lateral width at the front end portion of the seating surface 48. Therefore, even when the seated person spreads the thighs of both legs, the thigh is fastened by the bank portion 49, and the seated person's legs can be kept on the legrest 4.

  FIG. 8 is a side view showing the assembled state of the frame portion 40, the hoisting mechanism 20, the slide mechanism 30, and the legrest 4. FIG. 9 is a top view of FIG. As shown in FIGS. 8 and 9, when the hoisting mechanism 20 is folded, the leg rest 4 is positioned forward of the front ends of the left and right side frames 41 and below the front portion of the support base 82. Stands with its (front) face up. As described above, since the cushion pad 47 is provided on the support base 82, the legrest 4 is stored in the space S in this state.

  10 is a front view of FIG. 5, and FIG. 11 is a rear view of FIG. In addition, in FIG. 10, the outline of the legrest 4 is shown with the broken line, and the state which the internal flame | frame 4a exposed is shown. As shown in FIGS. 8 and 9, the legrest 4 is positioned forward of the front end of the side frame 41 in a state where the hoisting mechanism 20 is folded and the legrest 4 is suspended. The horizontal width of the leg rest 4 is not limited to the interval between the left and right side frames 41 or less, and the horizontal width of the leg rest 4 is equal to the interval between the left and right side frames 41 as indicated by broken lines. If necessary, the lateral width of the leg rest 4 may be further increased so that the lateral width of the leg rest 4 is larger than the interval between the left and right side frames 41.

  As shown in FIG. 11, tubular members 34 are provided at the four corners of the base 31 of the slide mechanism 30, and wires 35 are passed through the tubular members 34 so as to be N-shaped. The slider 33 and the wire 35 are connected to each other by a connection fitting 36 at a linear portion 35a of the wire 35 routed in the sliding direction of the slider 33 (the vertical direction in FIG. 11). The wire 35 is connected to the operation unit 812 in an annular shape in which both ends are connected. When the operation unit 812 is rotated, the wire 35 moves and the slider 33 slides. At this time, the left and right straight portions 35a are simultaneously moved in the same direction.

Next, operations of the hoisting mechanism 20 and the slide mechanism 30 will be described.
When the length adjusting mechanism 27 is unlocked, the hoisting mechanism 20 can be folded and unfolded. On the other hand, when the length adjusting mechanism 27 is locked, the hoisting mechanism 20 is maintained in that state. In the state where the hoisting mechanism 20 is folded as shown in FIG. 8, the legrest 4 hangs down from the front part of the support base 82, that is, the front end part of the seat bottom 2, but the length adjustment mechanism 27 is locked. Is released, the piston 27a extends from the cylinder 27b, and the undulation mechanism 20 is unfolded forward as shown in FIG. 12, and the legrest 4 is moved from the front portion of the support base 82, that is, from the front end portion of the seat bottom 2. Raised forward. Further, if a downward load is applied to the legrest 4 with the length adjustment mechanism 27 unlocked, the piston 27a is pulled into the cylinder 27b and the undulation mechanism 20 is folded back to the state shown in FIG.

Next, the sliding operation of the legrest 4 will be described.
As shown in FIG. 12, when the operation portion 812 is operated in a state where the legrest 4 is moved forward from the front end portion of the seat bottom 2, the straight portion 35 a of the wire 35 starts to move in the same direction at the same time. Then, the left and right sliders 33 connected to the wires 35 by the connection fitting 36 and the frame 4a fixed to the left and right sliders 33 slide relative to the base 31, and the legrest 4 is shown in FIG. 13 from the position shown in FIG. Move to position. Note that the leg rest 4 can be stopped at an arbitrary position in the middle by operating the operation unit 812. Moreover, since both ends of the wire 35 are connected to each other and are in an annular shape, when the operation unit 812 is operated in reverse, the wire 35 also moves in the reverse direction, and the legrest 4 moves from the moved position shown in FIG. Slide towards the original position shown.

  As described above, according to the present embodiment, the support base 82 of the tilt-up mechanism 8 is formed in a frame shape by the pair of left and right side frames 821, the front frame 822, and the rear frame 823. It can be made lighter than the shaped support. And since the reinforcement member 824 is spanned between the front part frame 822 and the rear part frame 823, rigidity can also be maintained. Accordingly, it is possible to provide the seat device 1 that maintains the rigidity of the tilt-up mechanism 8 while reducing the weight.

  In addition, since the legrest drive mechanism 7 is attached to the reinforcing member 824, the attachment rigidity of the legrest drive mechanism 7 is higher than when attached to the pair of left and right side frames 821, the front frame 822, and the rear frame 823. Can be improved.

  Further, since the connection frame 312 is stretched over the pair of left and right support frames 311 that support the legrest 4, the rigidity of the pair of support frames 311 can be increased by the connection frame 312.

  Further, since the connecting member 825 is stretched between the plurality of reinforcing members 824, the rigidity of the reinforcing member 824 can be increased, and the rigidity of the support base 82 can be further increased.

  Since the second reinforcing member (second connecting rod 825b) is stretched between the pair of attachment portions (links 21) in the legrest driving mechanism 7, the rigidity can be further strengthened.

Further, since the reinforcing member 824 has a plate shape, the strength of the reinforcing member 824 itself can be increased and the rigidity can be further increased.
Since the reinforcing members 824 are disposed on the left and right sides of the front frame 822 and the rear frame 823, the rigidity of the front frame 822 and the rear frame 823 can be further increased.
Since the reinforcing member (third connecting rod 825c) is disposed at the center of the front frame 822 and the rear frame 823, the rigidity of the front frame 822 and the rear frame 823 can be further increased.
Since the reinforcing member 824 extends forward from the front frame 822, the legrest can be accommodated in the forward extending portion.

It is the perspective view which showed the vehicle seat apparatus. FIG. 2 is a front view of the seat device shown in FIG. 1. It is the disassembled perspective view which showed the frame part of the seat bottom, the raising / lowering mechanism, the slide mechanism, and the legrest. It is the disassembled perspective view which showed the said frame part. It is the perspective view which showed the said frame part, the raising / lowering mechanism, and a legrest. It is the top view which showed a part of sheet apparatus. It is the disassembled perspective view which showed the said raising / lowering mechanism, a slide mechanism, and a legrest. It is the side view which showed the said frame part, the raising / lowering mechanism, the slide mechanism, and a legrest. It is the top view which showed the said frame part, the raising / lowering mechanism, the slide mechanism, and a legrest. It is the front view which showed the said frame part and leg rest. It is the rear view which showed the said frame part, the raising / lowering mechanism, the slide mechanism, and a legrest. It is the side view which showed the said frame part, the raising / lowering mechanism, the slide mechanism, and a legrest. It is the side view which showed the said frame part, the raising / lowering mechanism, the slide mechanism, and a legrest.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seat apparatus 2 Seat bottom 3 Backrest 4 Legrest 5 Front-rear position adjustment mechanism 6 Reclining mechanism 7 Legrest drive mechanism 8 Tilt-up mechanism 20 Lifting mechanism 21 Link (attachment part)
30 Slide Mechanism 31 Base 50 Lifting Mechanism 81 Crank Part 82 Support Base 311 Support Frame 312 Connection Frame 821 Side Frame 822 Front Frame 823 Rear Frame 824 Reinforcement Member 825 Connection Member 825a First Connection Bar 825b Second Connection Bar ( Second reinforcing member)
825c Third connecting rod (reinforcing member)

Claims (9)

Seat bottom,
A tilt-up mechanism that is mounted on the seat bottom and adjusts the tilt angle of the seat bottom by moving the front end of the seat bottom up and down; and
The tilt-up mechanism is
A support for raising and lowering the front end of the seat bottom;
A crank part for adjusting the inclination angle of the seat bottom by adjusting the vertical position of the support base,
The support base is
A pair of left and right side frames spaced from each other;
A rear frame that spans the rear of the pair of side frames and engages the crank portion;
A front frame that spans the front of the pair of side frames,
A seat device in which a reinforcing member for connecting and reinforcing the front frame and the rear frame is stretched between the front frame and the rear frame. The seat device according to claim 1,
A leg rest provided so as to be able to undulate in a state where it hangs down from the front end of the seat bottom and a state where it rises forward from the front end of the seat bottom;
A legrest drive mechanism for driving the legrest,
The seat device, wherein the legrest driving mechanism is attached to the reinforcing member. The seat device according to claim 2, wherein
A pair of attachment portions for the reinforcing member in the legrest drive mechanism are provided with a space left and right with respect to each other,
A sheet device in which a second reinforcing member is stretched between the pair of mounting portions. In the sheet apparatus according to claim 2 or 3,
The legrest drive mechanism is
In order to support the legrest, the legrest has a pair of left and right support frames that are spaced apart from each other.
A seat device, wherein a connecting frame for connecting the pair of support frames is spanned between the pair of support frames. In the sheet apparatus according to any one of claims 1 to 4,
A plurality of the reinforcing members are provided with a predetermined interval between the front frame and the front rear frame,
A connecting device for connecting the plurality of reinforcing members is spanned between the plurality of reinforcing members. In the sheet apparatus according to any one of claims 1 to 5,
The sheet device, wherein the reinforcing member is plate-shaped. In the sheet apparatus according to any one of claims 1 to 6,
The seat device according to claim 1, wherein the reinforcing member is disposed on both sides of the front frame and the rear frame. In the sheet apparatus according to any one of claims 1 to 7,
The seat device according to claim 1, wherein the reinforcing member is disposed in a central portion of the front frame and the rear frame. In the sheet apparatus according to any one of claims 1 to 8,
The seat device according to claim 1, wherein the reinforcing member extends forward from the front frame.

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