JP2002119363A - Chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair by which a user can obtain comfortable sitting feeling when the back end part of the seta part is raised. SOLUTION: This chair is equipped with a swelling part 111 partially swelling and a mechanism X to raise the back end part 11b upper-backward. The swelling part 111 is extended in the longitudinal direction and the rear end 111a thereof is set at a position on the base end part 11x of raising at the back end part 11b of the seat part 1 or in front so as to smoothly continue positions other than the swelling part 111 to the front end 11a side of the seat part 1 across the base end part 11x of the raising and the back end part 11b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair having a mechanism for raising a rear end of a seat.

[0002]

2. Description of the Related Art Conventionally, a seat is slid back and forth, for example, so as to move up and down on a rear end side so that a depth dimension of a seating surface of a seat can be changed according to a physique and a sitting posture of a seated person. Various chairs provided with a mechanism, such as a sliding mechanism, are proposed. Further, in such a chair, there is known a chair in which a raised portion is formed by partially raising a seat portion so as to stably hold a thigh or the like of a seated person.

[0003]

By the way, the depth dimension of the area on the surface of the substantially horizontal seat portion is to be changed by making the rear end portion of the seat portion rise upward and rearward with the sliding movement by the slide mechanism. In this case, if the above-mentioned raised portion is formed continuously from the front end to the rear end of the seat, the thickness of the seat is increased in a portion where the raised portion is provided, and thus the other portion is not formed. It becomes difficult to bend or bend as compared with the part, and as a result, it becomes difficult to make the rear end of the seat part smoothly rise up.

[0004] In view of the above-mentioned problems, the present invention provides a chair capable of realizing a smooth rising of the rear end when the rear end is raised.

[0005]

For this purpose, the chair according to the present invention comprises a seat having a raised portion which is partially raised, and a mechanism for raising the rear end of the seat upward and rearward. In this case, the protruding portion is extended back and forth, and the rear end is set at a protruding base end at the rear end of the seat portion or at a position forward of the protruding base, and through the protruding base end. It is characterized in that a portion other than the raised portion on the front end side of the seat portion and the rear end portion are smoothly connected. The protruding portion may be formed on a cushion body constituting a seat portion, or may be formed on a seat plate or the like supporting the cushion body. A part in which a raised portion is partially formed in the entire seat portion is included.

According to such a configuration, since the raised portion formed on the seat does not extend to the rear end, the rear end of the seat including the rising base end is caused by the presence of the raised portion. The rear end of the seat can be smoothly and continuously bent from the front end side with the base end as a boundary without thickening.

[0007] In particular, in order to suitably hold the thigh of the seated person from the outside, it is preferable that the raised portion is formed at least along the side end of the seat.

[0008] In order to be able to sit in a comfortable posture by distributing the left and right thighs of the seated person to the left and right,
It is preferable that the raised portion is formed so as to extend in the front-rear direction substantially at the center of the seat in the width direction. In this case, the raised portion extends back and forth between the crotch of the seated person, but if the raised portions are formed on both sides of the seat together with the raised portion, the feeling of holding the thigh can be further improved. Become.

[0009] Further, in order to be able to favorably support the seat from the buttocks to the waist of the occupant while maintaining the flexibility and smoothness of the rear end of the seat, the rear end of the seat is required. It is effective to form in a plane.

In order to further improve the bendability of the seat portion at the rising base end, the width of the rear end of the rising base end at the rear end of the seat portion is increased. Is preferably set to be smaller than the width dimension on the front end side.

[0011]

An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the chair of this embodiment has a seat 1, a backrest 5, a seat 2 for supporting the seat 1, a back support rod 6 for supporting the backrest 5, And a leg 7 for supporting the seat support 2 and the back support rod 6 and contacting the floor surface. In order to be able to adjust the depth dimension of the seating surface A that can effectively support the range from the buttocks to the thighs according to the physique of the seated person, the relationship between the seat portion 1 and the seat support 2 is adjusted. In addition, a slide mechanism X as a moving mechanism for sliding the seat 1 back and forth is provided. This slide mechanism X
Has a function to make the rear end portion of the seat portion 1 move upward and rearward. Further, a lumbar support 8 which is bent in a U-shape is attached to the upper end of the leg 7 so as to be able to rotate back and forth. This lumbar support 8 is for supporting the waist of the seated person, and is provided at the lower end 51 of the upholstery 51 of the backrest 5.
b is supported from behind. Upper end 5 of this upholstery 51
1a is attached to the upper end of the back support rod 6.

As shown in FIGS. 1 to 7, the seat 1 is provided on the rear side of the seat body 11 so as to support the seat body 11 from the front end 11a of the seat body 11 to a position slightly closer to the rear. And the rear end 1 of the seat body 11
1b for supporting the rear seat 1b.

As shown in FIGS. 1 and 2, the seat body 11 is formed by integrally molding a urethane material or the like having a cushioning property. In addition to the horizontal state, the rear end portion 11b is inclined upward and rearward to rise.
The width of the rear end 11b is set to be larger than that of the rising base end 11x of the rear end 11b.
A step is provided at the side end 11c at the rising base end 11x so as to be smaller than the width of the side. A substantially horizontal area on the surface of the seat body 11 that can substantially support the thigh of the seated person is set as the seating surface A. Further, on the seating surface A, as shown in a perspective view in FIG. 2 and an end view in FIG.
1 is formed at a portion along both side end portions 11c and at a substantially central portion in the width direction to form a raised portion 111 extending in the front-rear direction and raised from other portions to form the seating surface A three-dimensionally. I have. The rear end 111a of the raised portion 111 is set at a position forward of the rising base end 11x.
Thus, the left and right thighs of the occupant are placed on the valleys between the adjacent raised portions 111, and the thighs are held so as to be wrapped by the raised portions 111 from the left and right. Further, the surface of the rear end portion 11b of the seat body 11 is formed as shown in FIG.
As shown in a perspective view and an end view in FIG. 3 (b), it is formed two-dimensionally, that is, in a planar manner, and a portion other than the raised portion 111 on the seating surface A through the rising base end 11x. It continues smoothly. In addition, the seat body 1 corresponding to the back side of the knee so that the seated person can sit in a comfortable posture.
The front end of 1 is slightly curved downward. Further, the periphery of the seat body 11 can be covered with a cover material (not shown), but this is omitted here.

As shown in FIGS. 3 to 7, the seat plate 12 has the side end portion 12c curved upward so as to hold not only the back surface side of the seat body 11 but also the side end portion 11c, and the front end portion 12a. Has a three-dimensional shape that is curved gently downward along the front end of the seat body 11. This seat plate 1
The front wall 12 of the bracket 121 having an L-shape when viewed from the front is formed on the back surface along one side end 12c of the front end 12a.
1a is screwed from below and attached to the side wall 121b of the bracket 121.
1c is formed to penetrate in the thickness direction.

As shown in FIGS. 3 to 6, the rear seat plate 13 is made of a thin resin plate which is flexible and deformable and has a flat sheet shape. 12
b to hold substantially the entire rear end 11b of the seat body 11 from below. The rear seat plate 13 can be curved due to the flexibility of the material, but can be planar as long as the material can be flexibly deformed. And
A plurality of grooves 131 extending in the width direction, that is, the direction perpendicular to the sliding movement direction of the seat 1 are formed at predetermined intervals in the front and rear sides on the back surface side. The groove 131 is formed by engraving on the rear surface of the rear seat plate 13 so as to open downward in a substantially triangular shape in a side view. In addition, the plurality of grooves 13
1 is provided with a pair of left and right long holes 132 extending through the thickness of the rear seat plate 13 and extending in the front-rear direction. These long holes 132 are formed so as to be positioned substantially directly above the seat frame 21 described later.

As shown in FIG. 1 and FIGS. 4 to 7, the seat support 2 has a front end supported by the leg 7 and a rear end supported by the back support rod 6, so that it is substantially horizontal in the front-rear direction. And a connecting member 22 for connecting the two seat frames 21 to each other. Seat frame 21
Is a channel member having an upper wall 211, an outer wall 212, and an inner wall 213 and having a downward open U-shape in cross section. The connecting member 22 includes a front wall 221, a rear wall 222, and a bottom wall 223.
The outer surface of each wall of the connecting member 22 is connected to the inner wall 213 of the seat frame 21 by welding or the like, thereby reinforcing the seat frame 21. In addition, the long hole 121c is provided with the inner wall 2 of the seat frame 21.
13, a pin 23 is attached to the front end of the seat plate 12 in a substantially horizontal direction.
1, the slidable range of the seat 1 is defined so that the elongated hole 121 c can move back and forth along the pin 23. Further, a lower end of a plate-shaped rear seat support 3 which extends upward and rearward and is inclined is rotatably mounted via a hinge 31 between rear ends of the seat frame 21. A plate-shaped bracket 32 is attached to the upper end 3b of the rear seat support 3 downward, and a pin provided in a bent portion of the lumbar frame is formed in a hole 321 formed in the bracket 32 and penetrating left and right. The rear seat 3 and the lumbar support 8 are connected by movably inserting the 8a.

As shown in the enlarged view of FIG. 6, between the rear seat plate 13 and the seat 2 and the rear seat 3, a floating surface which can prevent the rear seat plate 13 from rising when the seat portion 1 is slid. The suppression part Z is formed. Specifically, the floating suppression portion Z
Is composed of the elongated hole 132 formed in the rear seat plate 13 and pins P respectively attached to the rear end of the seat frame 21 and the lower end 3a of the rear seat support 3 so as to be inserted into the elongated hole 132. You. This pin P has a head Pa having a diameter larger than the opening width on the left and right of the long hole 132 and a long hole 1
32 and a shaft portion Pb inserted into the shaft portion 32. When the seat 1 is attached to the seat 2 and the rear seat 3, the shaft Pb of the pin P is inserted into the elongated hole 132, and the head Pa is exposed to the surface of the elongated hole 132. The rear seat plate 13 is pressed down by the lower surface of the portion Pa.

On the other hand, as shown in FIGS. 1, 6, and 7, the slide mechanism X includes a pair of rack gears RG attached to the seat support 2, and the seat 1 so as to mesh with the rack gears RG.
, And a pair of pinion gears PG attached to the gears. The rack gear RG is in the form of an elongated plate having a plurality of teeth arranged in parallel in the front-rear direction on the upward surface, and is fixed to a side end of the upper surface of the bottom wall 223 of the connecting member 22. The pinion gear PG is provided on the peripheral wall with the rack gear RG.
The disk 14 is formed in a disk shape having teeth formed at the same pitch as the horizontal axis a on the side wall 142 of the bracket 14 having an L shape in a front view.
It is rotatably mounted via. This bracket 1
The upper wall 141 is screwed to the seat plate 12 from below. The horizontal support shaft a is common to the left and right pinion gears PG, and synchronizes the operations of the two pinion gears PG. Further, in this slide mechanism X,
A restricting means Y is provided that prohibits the rotation of the pinion gear PG at an arbitrary position where the pinion gear PG moves back and forth while rotating along the rack gear RG and restricts the sliding movement of the seat 1. The restricting means Y is provided at the front end 12 of the seat plate 12.
By operating the operation lever 4 arranged below in FIG. 4A to rotate up and down, the operation lever 4 has a stopper gear SG that moves up and down and selectively engages with and separates from the pinion gear PG. That is, the operation lever 4 and the stopper gear S
G is connected via a connecting portion 41 that converts the rotating operation of the operation lever 4 into the up and down operation of the stopper gear SG,
By operating the operation lever 4, the seat 1 can be selectively switched between a slidable state and a restricted state.

Then, the stopper gear SG is moved upward through the operation of the operation lever 4 to make the pinion gear PG rotatable, and the seat 1 is moved while rotating the pinion gear PG along the rack gear RG. When it is moved back and forth, the position of the deflection on the rear seat plate 13 changes. At that time, the degree of opening of the groove 131 in the front-rear direction is increased in a portion where the degree of curvature is large, and the groove 131 is also opened or closed in a size corresponding to the degree of curvature in other portions. Seat plate 1
3 as a whole is smoothly curved. On the other hand, the seat body 11 held by the rear seat plate 13 that has been smoothly curved in this manner is smoothly curved without forming a wrinkle of irregularities on the base end portion 11x that rises rearward. The surface of 11 is smoothly continuous without bending from the front end 11a side to the rear end 11x side. When the seat 1 slides, the long hole 132 of the rear seat plate 13 moves back and forth along the pins P of the seat 2 and the rear seat 3, but the rear seat plate 13 has a pin head. Since it is held down by Pa, it does not rise, and as a result, the lifting of the rear end portion 11b of the seat body 11 from the seat 2 and the rear seat 3 is prevented. The smoothness of the surface of the seat body 11 is controlled by operating the operation lever 4 so that the stopper gear SG and the pinion gear PG are engaged with each other, and the depth dimension of the seating surface A corresponds to the size of the seated person. It is maintained even when movement is restricted.

In the chair of this embodiment, the lumbar support 8 is rotated back and forth about the lower end supported by the leg 7 at a position where the depth of the seating surface A is appropriately adjusted through the slide mechanism X. The lower end 51 of the upholstery 51 of the backrest 5 in such a position as to push the seated person's waist forward.
b can be pushed forward. That is, the mechanism for operating the lumbar support 8 also has a function of raising the rear end 11b of the seat 1. When the lumbar support 8 is rotated forward, the pins 8 a provided on the lumbar support 8 move upward in the holes 321 formed in the bracket 32 of the rear seat support 3. At this time, the lumbar support 8 pushes the rear seat support 3 upward from the lower side, but the rear seat support 3 rotates forward around the hinge 31 of the lower end 3a. Also in this case, the rear seat plate 13 is
The base end portion 1 which is smoothly curved to increase the degree of curvature smoothly while widening the opening width of the opening 31, and which rises even if the rearward inclination angle of the seat body 11 is increased accordingly.
1x can be smoothly curved without generating uneven wrinkles, so that a seated person can be provided with comfortable sitting comfort.

As described above, in the chair of this embodiment, the seat 1 is moved by the slide mechanism X to the seat body 11 which is an element thereof.
Can be slid back and forth so that the rear end portion 11b rises rearward and upward, so that the depth dimension of the seating surface A is appropriately adjusted according to the physique and posture of the seated person to obtain a comfortable sitting comfort. It is intended to be. A raised portion 11 formed on the surface of the seat body 11 and extending in the front-rear direction.
1, the rear end 111a is set at a position forward of the rising base end 11x of the rear end 11b of the seat body 11, and the front end 11a is bordered by the rising base end 11x. A part other than the raised part 111 and the rear end part 11
b is smoothly connected to the rear end portion 11b, so that the rear end portion 11b does not reach the raised portion 111, so that the rear end portion 11b does not become thicker. It can be smoothly curved to further improve comfort when sitting. Therefore, according to such a chair, not only the front end portion 11a of the seat body 11 can suitably support the thigh of the seated person, but also the rear end portion 11b which rises rearward and upward from the hip to the hip. Part can be satisfactorily supported, and a smooth contact feeling can be obtained even at the rising base end 11x corresponding to the boundary between the buttocks and the thighs, and an extremely good sitting comfort It is possible to configure a chair.

In particular, the raised portion 111 formed on the seating surface A
Are formed so as to extend back and forth respectively at a portion along both side end portions 11c of the seat body 11 and a substantially central portion in the width direction, so that the left and right thighs of the seated person are held from the outside and the inside, respectively. As a result, a stable sitting comfort can be obtained.

Further, since the surface of the rear end portion 11b of the seat body 11 is formed flat, even if the position of the rising base end portion 11x changes back and forth due to the sliding movement of the seat portion 1, it is curved. Therefore, it is possible to suitably support the seated person from the buttocks to the waist without feeling foreign objects.

Further, a step is formed at the side end 11c at the rising base end 11x of the seat body 11,
Since the width dimension of the rear end portion 11b is set smaller than the width dimension of the front end portion 11a side, it is possible to further improve the easiness of bending around the rising base end portion 11x due to the formed step. Can be.

The present invention is not limited to the above-described embodiment. If the rear end of the raised portion does not extend beyond the rising base end to the rear end, the side end of the seat body may be used. Or only at the center, or at any other suitable location. Further, the specific configuration of other components such as the slide mechanism is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0027]

The present invention is embodied in the form described above and has the following effects.

That is, in the chair of the present invention, when the rear end of the seat rises rearward and upward, the rear end of the raised portion formed in the seat and extending in the front-rear direction is moved upward at the rear end of the seat. At the base end of the seat or at a position forward of the base end, so that the part other than the raised part on the front end side of the seat and the rear end are smoothly continuous with the rising base end as a boundary. Make up. Therefore, since the raised portion formed on the seat does not extend to the rear end, the rear end of the seat, including the rising base end, does not become thick due to the presence of the raised portion. The rear end of the seat can be smoothly and continuously bent from the front end side with the boundary as a boundary. Therefore, according to such a chair, on the front end side of the seat portion, the depth dimension of the region can be appropriately changed according to the physique of the seated person, and the thigh can be effectively supported. At the rear end of the raised seat, it is possible to favorably support the part from the buttocks to the hips of the seated person, and furthermore, a smooth feeling of contact will be obtained even at the boundary between the buttocks and the thighs, It is possible to construct a chair with good sitting comfort.

In particular, when the raised portion is formed at least along the side edge of the seat portion, the thigh of the seated person can be held from the outside, and a stable sitting comfort can be obtained. . Further, if the raised portion is formed to extend forward and backward at a substantially central portion in the width direction of the seat portion, the raised portion extends forward and backward between the crotch of the seated person, and the left and right thighs of the seated person are seated. It is possible to sit in a comfortable position separately on the left and right on the part, and furthermore, if the ridges are formed on both sides and the center of the seat, the left and right thighs can be held from inside and outside, respectively, It is possible to further improve the sense of stability when sitting.

Further, if the rear end of the seat is formed in a plane, even if the position of the rising base at the rear end of the seat changes due to sliding movement, it is easy to bend at the base. In addition to being able to maintain smoothness and smoothness, it is possible to favorably support the seated person from the buttocks to the waist without feeling foreign objects.

Further, the width of the rear end portion is made larger than the width size of the front end side by forming a step at the side end portion of the seat portion at the rising base end portion at the rear end portion of the seat portion. When set to a small value, compared to the case where the width of the seat is almost constant from the front end to the rear end, the ease of bending of the seat at the rising base end is effectively improved. Can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing an embodiment of the present invention.

FIG. 2 is a perspective view of a seat body in the embodiment.

FIG. 3 is a schematic end view showing a main part of the seat portion.

FIG. 4 is an exemplary perspective view showing a state in which the seat plate and the rear seat plate of the embodiment are viewed from a rear lower part;

FIG. 5 is an enlarged sectional view showing the rear end side of the seat, the seat support and the rear seat support.

FIG. 6 is a side sectional view showing a main part of the embodiment.

FIG. 7 is a longitudinal sectional view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Seat part 11a ... Front end part 11b ... Rear end part 11c ... Side end part 11x ... Proximal base end part 111 ... Ridge part X ... Slide mechanism

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Annette Ponholzer Germany 60594 Frankfurt am Main Schweizer Strasse 7 FP Design Gae Mbeher F-term (reference) 3B096 AB05 AD07

Claims (5)

[Claims] 1. A seat having a raised portion which is partially raised, and a mechanism for raising a rear end of the seat upward and rearward, wherein the raised portion extends in the front-rear direction. The rear end is set at or near the protruding base end at the rear end of the seat, and a portion other than the raised portion on the front end side of the seat through the protruding base. The chair is characterized in that the and the rear end are smoothly continuous. 2. The chair according to claim 2, wherein the raised portion is formed at least along a side end of the seat. 3. The chair according to claim 1, wherein the raised portion is formed so as to extend forward and backward at a substantially central portion in the width direction of the seat portion. 4. The chair according to claim 1, wherein the rear end of the seat is formed flat. 5. The method according to claim 1, wherein a width dimension of the rear end portion at the rear end portion of the rising portion at the rear end portion of the seat portion is set smaller than a width dimension at the front end portion side. Two, three
Or the chair according to 4.