JP2003093189A - Multipurpose chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multipurpose chair with a headrest with simplified attaching structure to reduce cost. SOLUTION: This multipurpose chair has a rotatable backrest frame 9, a seat frame 16, and a foot rest frame 22 rotatably equipped in front of the seat frame 16. A headrest attaching rod 57 in the lateral direction is equipped on a prescribed rear position of the backrest seat 60 with the backrest frame 9. An attaching belt member 59 equipped with a headrest 58 is wound around and equipped to the headrest attaching rod 57. Height of the headrest 58 against the backrest seat 60 can be changed and adjusted by changing length of the attaching belt member 60.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multipurpose chair, particularly a headrest.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open Publication No. 2000-342376, which has been publicly known, includes a rotatable backrest frame, a seat frame, and a footrest frame rotatably provided on the front side of the seat frame. The backrest frame is described as being configured to be rotatable by a reclining motor from an upright state to an extended state in which the head side is lowered.

[0003]

The above-mentioned known example has not been proposed for a headrest. In the present application, the headrest can be easily provided and the height of the backrest seat can be adjusted.

[0004]

It is an object of the present invention to provide a multipurpose chair having a headrest, simplify the mounting structure of the headrest, and reduce the cost.

[0005]

According to the present invention, a backrest frame 9, a seat frame 16 and a seat frame 16 which are rotatable.
In which a footrest frame 22 rotatably provided on the front side of the backrest seat 60 having the backrest frame 9 is provided with a headrest mounting rod 57 in the left-right direction at a predetermined position on the rear side of the backrest seat 60. A mounting belt member 59 having a headrest 58 is wound around the headrest mounting rod 57, and the height of the headrest 58 with respect to the backrest seat 60 is changed by changing the length of the mounting belt member 59. It is an adjustable multipurpose chair. According to the present invention, the one side engaging surface member 61 which can be contacted and separated is formed at the end portion of the mounting belt member 59, and the other side engaging surface member 62 is provided on the back surface of the middle portion of the mounting belt member 59. It is a multipurpose chair.

[0006]

Embodiments of the present invention will be described with reference to the drawings.
Is a multipurpose chair frame body such as a treatment chair used when an dialysis patient or a dental patient is treated, or a relaxed chair that sits relaxedly, and 2 is a support lower part that constitutes a part of the multipurpose chair frame body 1. The supporting lower frame 2 is a frame and is mounted on the floor by providing front and rear wheels 4 respectively. An upper support frame 6 is provided on the lower support frame 2 via an optional lifter mechanism 5.
The upper support frame 6 has a pair of left and right front and rear rods 7 in the front-rear direction, and the front and rear rods 7 are provided so as to move up and down with respect to the support lower frame 2 via the lifter mechanism 5. A rear bracket 8 is fixed to a rear portion of the front and rear rods 7, and a lower portion of a backrest frame 9 is rotatably attached to an upper portion of the rear bracket 8 by a horizontal shaft 10. A reclining motor 11 is rotatably attached to a central position on the rear surface (rear surface) side of the backrest frame 9, and the reclining motor 11 is provided with a reclining rod 12 that expands and contracts by the rotation of the reclining motor 11. The reclining rod 12 projects downward and is axially attached to the tip of the mounting rod 13 by a shaft 14, and the base of the mounting rod 13 is fixed to the rear bracket 8 or the upper support frame 6 side below the horizontal shaft 10.

Therefore, the rear bracket 8 between the horizontal shaft 10 and the shaft 14, the back frame 9, and the reclining rod 12 of the reclining motor 11 are provided.
And the mounting rod 13 constitute a reclining link. Then, the lower portions of the standing portions 15 standing upward are fixed to the upper surface of the base portion side of each upper support frame 6,
A rear portion of a U-shaped rear frame 17 of the seat frame 16 is rotatably attached to an upper end of each standing portion 15 by a shaft 18.
A seat intermediate connecting frame 19 in the left-right direction is provided on the front side of the seat frame 16, and the seat intermediate connecting frame 19 is placed on the front and rear rods 7 so as to restrict downward rotation of the seat frame 16. . A seat connecting frame 20 in the left-right direction is provided on the front side of the seat intermediate connecting frame 19, the bases of a pair of left and right seat-side arms 21 are fixed to the seat connecting frame 20, and a foot is attached to the tip of each seat-side arm 21. The tip of the footrest-side arm 24 provided on the upper frame 23 of the hanging portion frame 22 is rotatably attached by a left and right footrest rotating shaft 25, and the footrest frame 22 is rotated around the footrest rotating shaft 25. Configure freely.

In this case, each of the seat side arm 21 and the footrest side arm 24 is provided with a stopper surface 26, and the footrest frame 22 is rotated upward so that the footrest frame 22 and the seat frame 16 are mutually moved. In the horizontal state, the stopper surfaces 26 of the seat-side arm 21 and the footrest-side arm 24 are in contact with each other to restrict upward rotation of the footrest frame 22, and the footrest frame 22 relative to the seat frame 16 is configured. Of the seat frame 16 and the footrest frame 22 are integrally rotated upward about the shaft 18. On the contrary, when the seat frame 16 and the footrest frame 22 are integrally rotated downward and the seat connecting frame 20 of the seat frame 16 contacts the upper surface of the front and rear rods 7, the seat frame 16 is rotated downward. Regulate the footrest frame 2
Only 2 is rotated downward. 30 is a tilting motor for vertically rotating the footrest frame 22, 31 is a tilting motor 3
It is a tilt rod that expands and contracts when it is rotated by 0, and the tilt rod 31 is attached to an arm 32 provided on the upper frame 23.

However, the bases of the pair of left and right footrest-side lower arms 34 are fixed to the left and right lower frames 33 of the footrest-side frame 22, and the step frames are attached to the tips of the respective footrest-side lower arms 34. A tip end of a step side arm 36 provided at 35 is rotatably attached by a step rotation shaft 37 in the left-right direction. Then, between the footrest frame 22 and the step frame 35, there is provided a step link mechanism 40 for rotating the step frame 35 forward as the footrest frame 22 rotates upward. In the step link mechanism 40, a bracket 41 is provided on the upper frame 23 of the footrest frame 22, and the intermediate portion of the intermediate arm 42 is rotatably attached to the bracket 41 by a mounting shaft 43.
The upper end (rear end) of the step link rod 44 in the front-rear direction is attached to one end (upper end) of the shaft 2 by the shaft 45, and the lower end (front end) of the step link rod 44 is attached to the step side arm 36 by the shaft 46. The front end (lower end) of the operating link rod 47 is attached to the other end (lower end) thereof by a shaft 48, and the rear end of the operating link rod 47 is attached to the seat side arm 21 by a shaft 49.

In this case, the step link rod 44 is located on the back side of the footrest frame 22, and the intermediate arm 42 moves the step frame 35 around the step rotation shaft 37 to move the footrest frame 22. Footrest frame 2 that is in a horizontal position relative to the storage position on the back side
The length and the arrangement are configured such that the step link rod 44 moves a length (distance) that can be rotated to a support position where the 2 and the seat frame 16 are substantially horizontal. The multipurpose chair frame body 1 is in a sitting mode in which the backrest frame 9 stands up at an arbitrary inclination angle and the footrest frame 22 is lowered frontward, and the backrest frame is in this sitting mode. 9 and the footrest frame 22 can be independently rotated, and the lifter mechanism 5 can vertically move the support lower frame 2 as a whole. Further, when the backrest frame 9 is tilted backward from the sitting mode and the footrest frame 22 is rotated upward until it is flush with the seat frame 16, the bed mode becomes substantially horizontal.

Further, the step frame 35 starts to rotate forward from the seating mode until the footrest frame 22 is flush with the seat frame 16 from the storage position located on the back side of the footrest frame 22. And footrest frame 22
When the bed mode is set to be substantially flush with the seat frame 16, the step frame 35 is also flush with the footrest frame 22 and the seat frame 16, and when further rotated upward, the step frame 35 side is raised and the back is lowered. It also shifts to the exhibition mode in which the frame 9 side is lowered. Thus, the backrest frame 9 is configured by connecting the upper portions of the pair of left and right vertical frames 50 by the horizontal frame 51, and providing the left and right vertical frames 50 with the reinforcing frames 52 at predetermined intervals vertically. The vertical frame 50 is provided with a carrying handle 53 at a rear side thereof with a predetermined interval. Transport handle 53
The upper part of the pair of left and right vertical rods 54 is bent to the front side, and the bent portion 55 is connected by the handle portion 56 in the left and right direction. The lower portion of the vertical rod 54 is attached to the stay 63, and the stay 63 is attached to the back frame 9. It is fixed to the vertical frame 50 or the reinforcing frame 52.

In this case, if the lower part of the vertical rod 54 is attached to the vertical frame 50 of the backrest frame 9 so as to be movable up and down, it is preferable because the height of the carrying handle 53 can be adjusted. If the rod 54 is inserted vertically and fixed by the adjusting screw 64, the structure can be simplified. A left and right headrest mounting rod 57 is fixed to the vertical rod 54 below the handle portion 56. The attachment belt member 59 of the headrest 58 is wound around and attached to the attachment rod 57 for headrest. The attachment belt member 59 is fixedly attached to the upper end of the headrest 58, and the upper side of the attachment belt member 59 is wound around the headrest attachment rod 57 over the upper surface of the backrest seat 60. In this case, one end engagement surface member 61 which can be freely contacted and separated is formed at the end of the attachment belt member 59, and the other engagement surface member 62 is provided on the back surface of the middle portion of the attachment belt member 59. The length of the attachment belt member 59 is changed by changing the bonding position of the one side engagement surface member 61 and the other side engagement surface member 62, and thus the height position of the headrest 58 with respect to the backrest seat 60 is adjusted. To do. 10 and 11 show a half of the multipurpose chair frame body 1, and the configuration of the present application is not limited by these figures.

[0013]

[Operation] Next, the operation will be described. Reclining motor 1
When 1 is rotated, the reclining rod 12 contracts, and the backrest frame 9 pivots rearward (downward) around the horizontal axis 10. When the reclining motor 11 is rotated in the reverse direction, the reclining rod 12 extends and the backrest frame 9 rotates forward (upward) about the horizontal shaft 10. Then, when the tilting motor 30 is rotated, the tilting rod 31 extends. Since the tilt rod 31 pushes the arm 32 of the footrest frame 22 forward, the footrest frame 22 starts to rotate upward around the footrest rotation shaft 25. In this case, since the seat side arm 21 provided on the seat frame 16 and the footrest side arm 24 provided on the footrest frame 22 are provided with stopper surfaces 26, respectively.
When 2 and the seat frame 16 are flush with each other (substantially horizontal), the stopper surfaces 26 of the seat-side arm 21 and the footrest-side arm 24 come into contact with each other to restrict upward rotation of the footrest frame 22, Place the footrest frame 22 in the bed mode position.

Further, when the tilting rod 31 is further extended, the upward rotation of the footrest frame 22 with respect to the seat frame 16 is stopped, and the seat frame 16 and the footrest frame 22 are integrally centered on the shaft 18. Turn upwards to enter the exhibition mode. On the contrary, when the seat frame 16 and the footrest frame 22 are integrally rotated downward from the exhibition mode or the bed mode, and the seat connecting frame 20 of the seat frame 16 contacts the upper surface of the front and rear rod 7. The downward rotation of the seat frame 16 is restricted, and only the footrest frame 22 is rotated downward to set the seating mode. Then, the lower frame 33 of the footrest frame 22 has a footrest-side lower arm 34.
And the step frame 3 is attached to the lower arm 34 on the footrest side.
5, the step side arm 36 is attached to the step rotation shaft 37.
The step frame 35 is rotatably attached to the seat connection frame 20 and the step frame 35 from a storage position located on the back side of the footrest frame 22 to a support position substantially flush with the footrest frame 22. Since the step link mechanism 40 is provided between the stepping frames 35, when the footrest frame 22 is rotated upward by the tilting motor 30, the step frame 35 is first rotated downward about the step rotation shaft 37, and the footrests are rotated. When the footrest frame 22 is substantially flush with the seat frame 16 in the seating mode, the step frame 35 is substantially flush with the footrest frame 22. Become one

In this case, the step link mechanism 40 is
The intermediate portion of the intermediate arm 42 is rotatably attached to the bracket 41 of the upper frame 23 of the footrest frame 22 by the attachment shaft 43, and the upper end (rear end) of the step link rod 44 in the front-rear direction is attached to one end of the intermediate arm 42. It is attached by the shaft 45, and the lower end (front end) of the step link rod 44 is the step arm 36.
Is attached to the other end (lower end) of the intermediate arm 42 by a shaft 48, and the rear end of the operating link rod 47 is attached to the seat side arm 21 by a shaft 49. Since the step link rod 44 located on the back side of the footrest frame 22 is moved by the intermediate arm 42 about the attachment shaft 43, the steplink rod 44 is moved forward with respect to the footrest frame 22 by a predetermined distance. The rod 44 rotates the step frame 35 from the storage position located on the back side of the footrest frame 22 to a support position that is substantially horizontal to the footrest frame 22 around the step rotation shaft 37.

That is, when the tilting rod 31 is extended by the tilting motor 30, the footrest frame 22 rotates about the footrest rotating shaft 25, whereby the mounting shaft 43 to which the intermediate arm 42 is attached also rests on the footrest. Although it pivots forward about the pivot shaft 25, the operating link rod 47 is mounted on the shaft 4 below the footrest pivot shaft 25.
Since it rotates about the center of 9, the operating link rod 47
Acts to pull the lower end of the intermediate arm 42,
The shaft 45 moves forward with respect to 9, and the step link rod 44 moves by this length (distance), so that the step frame 35 in the storage position rotates to the support position. Therefore,
A motor or the like for rotating the step frame 35 becomes unnecessary. Since the step frame 35 rotates about the step rotation shaft 37 with respect to the footrest frame 22, the footrest frame 22 does not have a gap with the front end of the footrest frame 22. The length of is extended to bed mode. Further, as the lower end of the footrest frame 22 moves away from the floor surface, the amount of downward rotation of the step frame 35 increases, and when the tip of the step frame 35 is located a predetermined distance above the floor surface, the tip of the footrest frame 22 is located. Since it is set so as to start rotating toward the front side with reference to, the step frame 35 is located on the back side of the footrest frame 22 in the seating mode and does not interfere with the foot of the seated person, The foot surface is brought into contact with the floor surface, and when the footrest frame 22 is rotated upward to enter the bed mode, the length of the footrest frame 22 can be extended to support the foot of the seated person.

That is, the step frame 35 is expected to have an effect of compensating for the length of the footrest frame 22 in the bed mode, and the step frame 35 itself has a predetermined thickness. When it is located on the front side of the partial frame 22, the seat surface height is set by the seat frame 16 from the upper surface of the step frame 35, and the seat surface height at the initial position becomes high. It is not preferable for the purpose of use, and it is difficult to achieve both low seat height setting and extension of the footrest frame 22 in bed mode. However, by adopting the present invention, the seat height at the initial position is low. The setting and the securing of the length of the footrest frame 22 in the bed mode are both achieved. As described above, the multipurpose chair frame body 1
The seat frame 16, the footrest frame 22, and the step frame 3 are substantially horizontal.
The bed mode is set by making the backrest frame 9 flush with 5, and the seat frame 16, the footrest frame 22 and the step frame 35 are further rotated upward, and the backrest frame 9 is rotated downward. When moved, the step frame 35 side is high, and the backrest frame 9 side is low, and the mode shifts to the exhibition mode.

Therefore, a left and right headrest mounting rod 57 is provided at a predetermined position on the rear side of the backrest seat 60, and a mounting belt member 59 provided with a headrest 58 is wound around the headrest mounting rod 57. Therefore, the backrest seat 60 can be simply changed by changing the length of the attachment belt member 59.
A headrest 58 is provided so that its height is adjustable. In this case, one end engaging surface member 61 is formed at the end of the mounting belt member 59 so as to be freely contactable and separable, and the other engaging surface member 62 is provided on the back surface of the middle portion of the mounting belt member 59. Therefore, the one side engaging surface member 61 and the other side engaging surface member 6
By changing the bonding position of 2, the mounting belt member 5
The length of 9 is changed so that the height position of the headrest 58 with respect to the backrest seat 60 is adjusted. Further, since the headrest 58 is attached to the attachment belt member 59, and the attachment belt member 59 is wound around the headrest attachment rod 57, the headrest 58 is supported by the attachment belt member 59 and positioned relative to the backrest seat 60. Control the deviation,
Improve usability. In addition, the mounting belt member 5
Since the headrest mounting rod 57 for mounting 9 is provided on the carrying handle 53 provided on the back frame 9, no special mounting member is required. In this respect as well, the number of parts is reduced and the cost is reduced.

[0019]

The present invention has a rotatable backrest frame 9, a seat frame 16, and a footrest frame 22 rotatably provided on the front side of the seat frame 16, and has the backrest frame 9. A left and right headrest mounting rod 57 is provided at a predetermined position on the back side of the backrest seat 60, and a mounting belt member 59 provided with a headrest 58 is wound around the headrest mounting rod 57 for mounting the headrest mounting rod 57. Since the height of the headrest 58 with respect to the backrest seat 60 can be changed and adjusted by changing the length of the belt member 59, the backrest seat 6 can be easily adjusted.
It is possible to provide a headrest 58 whose height can be freely adjusted with respect to 0, and also to suppress the positional displacement with respect to the backrest seat 60
Improve usability. The present invention relates to the mounting belt member 5
A multi-purpose chair in which one end engaging surface member 61 which can be freely contacted and separated is formed at the end of 9, and the other engaging surface member 62 is provided on the back surface of the intermediate portion of the attachment belt member 59. Therefore, the height of the headrest 58 can be changed easily, and the adjusting mechanism can be configured to reduce the cost.

[Brief description of drawings]

FIG. 1 is a side view of a frame body (seating mode).

FIG. 2 is a side view showing a state in which the footrest frame is moved upward.

FIG. 3 is a side view of the armrest shown in FIG. 2 in a rail mode.

FIG. 4 is a side view showing a state where the backrest frame is rotated rearward.

FIG. 5 is a side view of a footrest frame and a step link mechanism portion.

FIG. 6 is a side view of the footrest frame and the step link mechanism portion.

FIG. 7 is a schematic perspective view of a step link mechanism.

FIG. 8 is a plan view of a step link mechanism, a seat frame, and a footrest frame portion.

FIG. 9 is a schematic explanatory diagram of a displacement state of the step frame.

FIG. 10 is a schematic perspective view of a left half portion of the frame body.

FIG. 11 is a schematic perspective view of a left half portion of the frame body.

FIG. 12 is a side view of the chair.

FIG. 13 is a perspective view of the same.

FIG. 14 is a perspective view of a headrest portion.

FIG. 15 is a side view of the same.

FIG. 16 is a perspective view of a headrest.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Multipurpose chair frame main body, 2 ... Support lower frame, 4 ... Rolling wheel, 5 ... Lifter mechanism, 6 ... Upper support frame, 7 ... Front / rear rod, 8 ... Rear bracket, 9 ... Back frame, 10 ... Horizontal axis , 11 ... Reclining motor, 12
… Reclining rod, 13… Mounting rod, 14… Shaft,
15 ... Standing part, 16 ... Seat frame, 17 ... Rear frame, 1
8 ... Shaft, 19, 20 ... Seat connecting frame, 21 ... Seat side arm, 22 ... Footrest frame, 23 ... Upper frame, 24 ...
Footrest side arm, 25 ... Footrest rotation axis, 26 ... Stopper surface,
30 ... Tilt motor, 31 ... Tilt rod, 32 ...
Arms, 33 ... Lower frame, 34 ... Lower arms on foot side, 35
… Step frame, 36… Step side arm, 37…
Step rotation shaft, 40 ... Step link mechanism, 41 ...
Bracket, 42 ... intermediate arm, 43 ... mounting shaft, 44 ...
Step link rod, 45 ... Shaft, 46 ... Shaft, 47 ... Actuating link rod, 48 ... Shaft, 49 ... Shaft, 50 ... Vertical frame, 5
DESCRIPTION OF SYMBOLS 1 ... Horizontal frame, 52 ... Reinforcement frame, 53 ... Conveying handle, 54 ... Vertical rod, 55 ... Bending part, 56 ... Handle part, 57 ... Headrest mounting rod, 58 ... Headrest, 59 ... Mounting belt member, 60 ... Backrest seat, 61
... one side engaging surface member, 62 ... other side engaging surface member.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hironori Shinoh             Parama, 2-14-5 Higashisuna, Koto-ku, Tokyo             Untobed Co., Ltd. Development Division F-term (reference) 3B084 DA03 DB01 DC01 DD01                 3B087 DC06                 3B099 BA11 CB06

Claims (2)

[Claims] 1. A backrest frame 9 which is rotatable, a seat frame 16, and a footrest frame 22 which is rotatably provided on the front side of the seat frame 16, wherein the backrest has the backrest frame 9. At the rear predetermined position of the seat 60,
A headrest mounting rod 57 is provided in the left-right direction, and a mounting belt member 59 provided with a headrest 58 is wound around the headrest mounting rod 57. By changing the length of the mounting belt member 59, A multi-purpose chair with adjustable height of the headrest 58 relative to the backrest seat 60. 2. The mounting belt member 5 according to claim 1.
A multi-purpose chair in which one end engaging surface member 61 which can be freely contacted and separated is formed at the end of 9, and the other engaging surface member 62 is provided on the back surface of the middle portion of the mounting belt member 59.