JPH07148202A - Chair carriage - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a chair moving base which allows a person to easily move the chair while sitting on the chair and can freely use the chair without any trouble while the chair is placed. . [Structure] Positioning means N for placing a bottom portion of a chair on a base frame 92 which can be moved by front and rear wheels 91a, ... And, The base frame 92 includes a U-shaped frame 94 in a plan view, a pair of left and right leg members 95 and 95 fixed to both ends of the frame 94, a connecting rod 96 connecting the both leg members 95 and 95, and a frame. A bottom plate for placing a chair on the 94
And 100. A lever 93 is arranged so as to project upward from one leg member 95. A front wheel 91a is provided on each leg member 95. The rear wheels 91 are provided on both corners of the frame 94 or in the vicinity thereof.
b and 91b are provided. The outer dimensions of the base frame 92 are set to be larger than the bottom of the chair.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a chair carriage.

[0002]

2. Description of the Related Art Elderly people with weakened knees and legs, or physically handicapped people who have knees and legs are
It was difficult to stand up by myself from a sitting position like a chair, and it took a lot of effort to stand up, which put a heavy burden on the body.

[0003]

However, heretofore, there has not been a chair suitable for assisting the above-described standing motion of the elderly or the like. Then, in the stage of developing such a stand-up auxiliary chair, a person can easily move the chair while sitting on the chair, and the chair can be freely used without any hindrance. There has been a demand for a large chair moving base.

[0004]

In order to achieve the above object, therefore, in the chair moving base of the present invention, the movement of the chair moving base is restricted by placing the bottom of the chair on a base frame which can be driven by front and rear wheels. Positioning means and base frame body braking means operable by a lever are provided, and the base frame body is a U-shaped frame in a plan view, and a pair of left and right leg members fixed to both ends of the frame. And a connecting rod connecting the two leg members, and a chair mounting bottom plate provided on the frame, and the lever is arranged so as to project upward from one of the leg members. The front wheel is provided on the member and the rear wheels are provided on both corners of the frame or in the vicinity thereof, and the outer dimensions of the base frame are set larger than those of the bottom of the chair.

Further, the connecting rod is formed to be hollow, the shaft is inserted therethrough, and each leg member is provided with a brake shoe and a cam member for pressing the brake shoe against a front wheel to brake. Both cam members are interlockingly connected by the shaft, and further, a lever is connected to one end of the shaft to form a base frame braking means.

Further, the leg member is formed in a box shape having a downward opening, and the brake shoe, the cam member and the front wheel are arranged in the leg member, and the downward opening is provided at the rear edge of the frame. Rear wheels were arranged in the box.

[0007]

If the chair is fixed to the base frame by the positioning means and the base frame braking means is set in the braking state, the chair can be seated in the same manner as when the chair is used alone,
You can sit down and use the chair freely. In addition, if the braking state is released, the chair can be moved by itself while the person is still sitting on it, or the chair can be moved by being pushed by the person.

Further, since the base frame is wider than the bottom of the chair and its four corners are supported by the wheels, even if the chair mounted on the base is used by a person, it does not wobble and is safe. is there. Further, since the lever of the base frame braking means projects upward from the leg member, it is easy to operate even while sitting on a chair.

Further, in the chair moving base in which the cam members of the base frame braking means are interlockingly connected by the shaft, the pair of left and right front wheels can be simultaneously braked to apply the brake, so that the chair moving base is surely free-running and misaligned. It can be prevented and meals can be done with confidence. Further, in the chair moving base in which the leg members are formed in a box shape with a downward opening and the box body with a downward opening is provided at the rear end edge of the frame, parts such as brake shoes, cam members, wheels and shafts are exposed to the outside. Not exposed and safe.

[0010]

The present invention will be described in detail below with reference to the drawings showing the embodiments.

1 and 2 show a chair moving table W according to the present invention.
Is illustrated. The chair moving base W has positioning means N for placing the bottom portion of the chair on a base frame 92 which can be driven by wheels 91 (front wheels 91a, 91a and rear wheels 91b, 91b) and for restricting movement. The base frame braking means P operable by the lever 93 is provided.

The base frame 92 includes a U-shaped frame 94 made of a pipe material and the like, a pair of left and right leg members 95 and 95 fixed to both ends of the frame 94, and leg members 95 and 95. It is composed of a hollow connecting rod 96 for connection and a mounting member 97 fixed along the inner side of the rear edge of the frame 94. Each leg member 95 is provided with a front wheel 91a and a frame 94 of the frame 94. Rear wheels 91b, 91b are provided at or near both corners, and the outer dimensions of the base frame 92 are set to be larger than those of the bottom of the chair.

The placing member 97 includes a box body 99 having a downward opening, and a chair placing bottom plate 10 which is horizontally projected from the box body 99 to the front.
It consists of 0 and. Inside this box 99, a pair of left and right rear wheels 91
b and 91b are provided. In the illustrated example, the rear wheel 91 is attached to the box 99.
b and 91b are rotatably and turnably mounted via pivoting members 98 and 98. Note that, unlike the example shown in the figure, the bottom plate 100 can be freely extended to the leg members 95.

Also, as shown in FIGS. 3 and 4, the leg member 95
Is formed in a box shape having a downward opening, and the front wheel 91a, the brake shoe 108, and the brake shoe 10 are formed in the leg member 95.
A cam member 109 for pressing 8 to the front wheel 91a for braking;
Is provided.

Specifically, the rear peripheral wall 95a of the leg member 95 is formed with a circular holding through hole 101 into which a front end portion of a supporting rod 13 of a chair to be described later is inserted. Further, a partition plate 102 in the front-rear direction, a partition plate 103 in the left-right direction, and a holding plate 104 are fixed inside the leg member 95.

The partition plate 10 is provided in front of the leg member 95.
A pivot support plate 105, which is parallel to 2, is fixed and a front wheel 91a is pivotally mounted between the partition plate 102 and the pivot support plate 105 via a pivot shaft 106.

A supporting shaft 107 is provided on the partition plate 102 so as to project therefrom.
A plate-shaped brake shoe 108 is pivotally attached to 107 in a suspended manner. The brake shoe 108 is disposed behind the front wheel 91a, and a cam member 109 having a shape in which a part of the outer peripheral surface of the cylinder is cut out is disposed so as to sandwich the brake shoe 108 with the front wheel 91a.

The cam member 109 is fixed to the end of a shaft 110 inserted through the connecting rod 96, and the shaft 110 is rotatably attached to the partition plate 102.

When the shaft 110 is rotated (see FIG.
The cam surface (outer peripheral surface) of the cam member 109 abuts on the brake shoe 108, and the brake shoe 10 swings.
The wheel 8 can be braked by being pressed by the wheel 91a.

In this way, the connecting rod 96 is formed hollow, the shaft 110 is inserted therethrough, and the brake shoe 108 and the cam member 109 are provided on each leg member 95, and both cam members 10 are provided.
9 is interlocked by shaft 110, and shaft 11
The lever 93 is connected to one end of the base frame body braking means P.
Make up. The lever 93 is projected upward through a longitudinal slot 111 formed in the upper wall 95b of the leg member 95.

Further, as shown in FIGS. 1 to 4, the mounting member
The fixed back portion 1 of the chair, which will be described later, is placed on the bottom plate 100 of 97, and the front end portion of the support rod 13 is inserted into the holding through hole 101 of the leg member 95 and is in contact with the partition plate 103. The rear part of the lower end of
The mounting member 97, the holding through hole 101 of the leg member 95, the partition plate 103, and the like constitute the positioning means N so as to come into contact with or approach the front surface of the box body 99.

In this way, since the chair can be mounted on the base frame 92 by the positioning means N, the chair can be easily attached and detached and no tools are required.

5 and 6 show an embodiment of the chair described above, which has a fixed back portion 1 mounted on the floor or the like.
An elevating member 3 which is attached to the fixed back portion 1 so as to be able to move up and down and is driven up and down by a motor 2, a rising assistance seat 4 in which the bottom surface 4a is pushed up as the elevating member 3 rises, and a backrest portion. 5, a pair of left and right armrests 6 attached to the elevating member 3 and projecting forward, and a seat portion 4 that can be moved forward and backward, and as the seat portion 4 moves forward, a backrest portion 5
And a reclining mechanism R that tilts backward.

The seat portion 4, the backrest portion 5 and the armrest 6 are covered with a cushion material or a cover material, and the fixed back portion 1 is covered with a casing 17.

Therefore, as shown in FIGS. 5 to 7, the fixed back portion 1 includes the support member 7 placed on the floor and the like, and the support member 7
And a pair of left and right main vertical rail members 9 and 9 and a sub vertical rail member 10
And are equipped with.

The support member 7 is a pair of right and left prismatic supporting legs 1
1 and 11 are connected by a mounting plate 12, and mounting plate 1
A motor 2 is attached to 2.

A round rod-shaped support rod 13 for preventing falling is detachably attached to each of the supporting legs 11. Further, a pair of left and right rollers 14, 14 are attached to the rear end of the support member 7, and the fixed back portion 1 is tilted backward with the rollers 14, 14 as a fulcrum, and the chair can be freely moved. You can

Further, as shown in FIGS. 5 to 8, the base frame 8
Is composed of a horizontal upper frame part 15 and a pair of left and right vertical frame parts 16 and 16 connecting the upper frame part 15 and the support member 7, and the vertical frame part
A channel type main vertical rail member 9 is fixed to the inner surface of 16, and three limit switches 18 ... Which restrict the vertical stroke of the elevating member 3 are attached to one main vertical rail member 9 or the like.

Further, in the intermediate portion between the left and right main vertical rail members 9 and 9, the upper and lower end portions of the sub vertical rail member 10 are parallel to the main vertical rail member 9 so that the upper frame portion 15 and the supporting member 7 are provided. It is fixed.

The sub-vertical rail member 10 is in the shape of a rectangular tube having a rectangular cross section, and a plurality of screw holes 19 are vertically provided in the front side wall 10a near the lower end thereof.

Next, the elevating member 3 is provided with a support body 20 parallel to the fixed back portion 1 and a guide frame body 21 projecting forward from the support body 20.
And a moving frame body 22 which is connected to the seat portion 4 and is attached to the guide frame body 21 so as to be slidable back and forth.

The support 20 includes a pair of left and right side plates 23, 23, and side plates 23, 23 in front of the base frame 8 and the sub-vertical rail member 10.
A connecting plate 24 that connects the base plate 8 and the sub-vertical rail member 10 in parallel with the lower end side of the connecting plate 24, and a rear end of the sub-vertical rail member 10 And a T-shaped support plate 26 connecting the side plates 23, 23.

At the front end of the side plate 23, one end of a pair of left and right plate-shaped support arms 48, 48 is attached so as to be swingable about the horizontal axes A, A, and the other support arms 48, 48 are attached. A guide frame body 21 is fixed to a connecting rod 49 that is provided so as to project inwardly (left and right) from the end portion.

Further, a support arm is provided at the lower end of the side plate 23.
A stopper piece 50 that restricts the rearward swing of the 48 is provided,
As a result, when the chair is used, the guide frame body 21 and the moving frame body
When the chair 22 is not used, the seat portion 4, the guide frame body 21, and the moving frame body 22 can be integrally folded upward so that the seat portion 22 can be held horizontally and is parallel to the backrest portion 5. it can.

Further, above the support arm 48, the armrest 6 is attached to the side plate 23 via the short shaft 30 so as to be swingable around the axis C in the left-right direction, and when a chair is not used. The armrest 6 can be folded upward so that the armrest 6 is parallel to the backrest portion 5, and when the chair is used, the armrest 6 is swung downward around the axis C and is horizontally oriented by a stopper (not shown) or the like. Can be held in.

On the outer side surface of each side plate 23, there are attached first guide rollers 31, 31 which are rotatable around an axis D.
The guide roller 31 has a shallow groove 3 on the inner surface of the main vertical rail member 9.
Roll 2, 32.

Further, on the front surface of the support plate 26, four second guide rollers 33, which are rotatable around the axis E, are attached. The second guide rollers 33, ... Are provided on the left and right sides of the sub-vertical rail member 10. Rolls with the sides clamped.

Therefore, the elevating member 3 can be moved up and down along the main / sub-vertical rail members 9, 9 and 10, and the left-right inclination (deflection) of the elevating member 3 is restricted by the second guide rollers 33. The inclination (deflection) of the elevating member 3 in the front and rear is regulated by the first guide rollers 31.

Further, on the rear surface of the support plate 26, a pressing piece 34 for turning on / off the limit switches 18 by raising and lowering the elevating member 3, a screw rotatably attached to the upper frame portion 15 and the supporting member 7. A nut member 35, which is screwed to the shaft 36 so as to be able to move back and forth, is fixed.

Rotating bodies 37 and 38 for power transmission such as sprockets and timing pulleys are attached to the lower end of the screw shaft 36 and the output shaft of the motor 2, respectively.

A power transmission endless member 39 such as a chain or a timing belt is wound around the rotating bodies 37 and 38, and the rotation of the output shaft of the motor 2 is transmitted to the screw shaft 36.

Then, when the screw shaft 36 rotates, the nut member 35 is screwed forward and backward, and the elevating member 3 moves up and down along the main / sub-vertical rail members 9, 9, 10. The motor 2
The forward / reverse rotation drive is performed by operating a remote controller (not shown).

Further, as shown in FIGS. 5, 6 and 9,
The mounting member 25 has a U-shaped cross section having a pair of left and right parallel side wall portions 40, 40. At the lower end of the mounting member 25, a rotary wheel 28 for suspending a belt 27 of a predetermined length is provided. Mounted via 29.

Further, a vertical main slot 41 is formed at the upper end of each side wall 40, and a protrusion 42 is provided outwardly (left and right) below the main slot 41. To be done.

Both ends of the slide pin 43, which is slidably inserted into both the main elongated holes 41, 41, are attached to the rear surface of the upper end side of the backrest 5, and a pair of left and right main guide pieces projecting rearward.
44, 44, the backrest 5 is attached to the mounting member 25,
It is connected so that it can move up and down and can swing around a horizontal axis.

Below the main guide pieces 44, 44, a pair of left and right auxiliary guide pieces 45, 45 protruding rearward are attached to the backrest portion 5, and the protrusion 42 is attached to the auxiliary guide piece 45. It is slidably fitted into the formed rear slanted sub elongated hole 46.

As a result, the correspondence between the vertical position of the backrest portion 5 and its inclination θ (see FIG. 13) at the time of reclining is regulated, and the movement of the backrest portion 5 which is inclined up and down is smoothed. be able to.

Moreover, the sub elongated hole 46 of the sub guide piece 45 and the protrusion
By fitting 42, force in the direction of arrow F to the backrest 5 (Fig.
(See 13), the backrest 5 is prevented from rattling.

The main guide piece 44 and the sub guide piece 45 are
The mounting members 25 are arranged in parallel along the outer surface of the side wall portion 40.

Further, as shown in FIGS. 10 to 12, the lower end side of the backrest portion 5 is provided at the rear end portion of the moving frame body 22 with a pair of left and right J.
It is swingably connected via the V-shaped plate-like swing arms 47, 47 so that the seat portion 4 and the backrest portion 5 can be interlocked with each other at the time of reclining, and the moving frame body 22 can be folded upward. It has become.

In FIG. 11, the left half from the center line L is a front view of FIG. 10, and the right half is a cross section taken along the line YY of FIG. 10. In FIG. 12, a stopper mechanism S described later is shown. Is omitted.

At the lower part of the backrest portion 5, a waist rest portion 51 is provided so that a person can sit comfortably for a long time. The waist rest portion 51 has a notch 52 at the center thereof. It is recessed from below.

The waist rest portion 51 of the portion corresponding to the cutout portion 52
On the rear surface, a pair of left and right parallel projections
3, 53 are additionally provided, and one end of the swing arm 47 is swingably connected to the parallel protrusion 53 about the axis G.

Further, a pivotal support piece 29, a rotary wheel 28 and a belt 27 are arranged corresponding to the cutout portion 52. Therefore, the notch 52 is
It serves to escape the swinging arm 47 when the guide frame 21 and the moving frame 22 are folded upward, and also to escape the belt 27 when the seat 4 is tilted forward.

Next, the movable frame body 22 has a pair of left and right parallel side frame portions 54, 54 each having a U-shaped cross section except for the front and rear end portions.
And a bar-shaped rear frame portion that connects the rear lower edges of the side frame portions 54, 54
55 and are formed in a U-shape.

A pair of left and right parallel forward tilting pieces 56, 56 project obliquely upward from the rear frame portion 55, and the other end of the swing arm 47 has an axial center on the front tilting pieces 56, 56. It is swingably connected around H.

The side frame portion 54 is arranged such that the opening of the U-shaped portion faces outward (left and right), and the front end side bottom surface 4a of the seat portion 4 is provided at the front end portions of the side frame portions 54, 54. The hanging pieces 58, 58 of the plate-like pivot body 57 attached to the above are connected swingably around the horizontal axis I.

A roller 65 rotatable around the axis B is provided at the rear end of the side frame 54, and a part of the roller 65 is projected downward from the lower surface of the side frame 54. Has become.

Next, the guide frame body 21 connects a pair of left and right parallel side frame portions 59, 59 having a U-shaped cross section except for the front end portion, and the front lower edges of the side frame portions 59, 59. Strip-shaped front frame 60
And a side rear frame portion 61 that connects the rear end portions of the side frame portions 59 and 59.
And are formed into a rectangular frame shape.

The side frame portion 59 is parallel to the support arm 48, and is arranged so that the opening of the U-shaped portion faces inward (left and right), and the rear end portion of the side frame portion 59. The connecting rod 49 is fixedly attached by welding or the like.

A roller 66 rotatable around the axis J is provided at the front end of the side frame 59, and a part of the roller 66 projects upward from the upper surface of the side frame 59. There is.

The side frame portions 59, 59 of the guide frame body 21 are wider than the side frame portions 54, 54 of the moving frame body 22,
The roller 66 of the guide frame body 21 is an upper wall portion of the side frame portion 54 of the moving frame body 22.
The side frame portions 59, 59 are arranged so that the roller 65 of the moving frame body 22 rolls on the lower wall portion 59a of the side frame portion 59 of the guide frame body 21 while rolling the 54a.
The side frame parts 54, 54 are inserted into.

As a result, the moving frame body is moved along the guide frame body 21.
When the movable frame body 22 is moved forward through the seat portion 4 from the state shown in FIG. 12, the backrest portion 5 is pulled forward by the swinging arm 47 and the main body
By being guided and guided by the sub-long holes 41 and 46, it descends and tilts backward.

When the moving frame body 22 is moved backward from the state shown in FIG. 13 via the seat portion 4, the backrest portion 5 is pushed rearward by the swing arm 47 and rises, contrary to the above. Stand up like. In this way, the backrest 5 can be tilted and reclined as the seat 4 slides back and forth without tilting the fixed back 1 and the support 20.

The reclining mechanism R is constituted by the guide frame body 21, the moving frame body 22, the swing arm 47, the main elongated hole 41, the slide pin 43, the main guide piece 44, the auxiliary guide piece 45, the protrusion 42, the auxiliary elongated hole 46 and the like. Is configured.

As shown in FIGS. 10 and 14, the guide frame body
At one inner edge of the lower wall portion 59a of the side frame portion 59 on one side (left side in the illustrated example) 21, a plate-like stopper receiver 68 having a plurality of locking female portions 67 ... It will be extended.

In the illustrated example, there are three locking female portions 67, the front and rear locking female portions 67, 67 are formed in a notch shape, and the central locking female portion 67 is formed in a rectangular hole shape. To be done.

Correspondingly, a pair of front and rear L-shaped pieces 62, 62 are fixed to one side frame portion 54 of the moving frame body 22. A rotary shaft 63 is rotatably supported around the shaft center of the L-shaped pieces 62, 62, and its back and forth movement is restricted by stop members 64, 64.

Stopper bearings are provided at the front and rear central portions of the rotary shaft 63.
An L-shaped stopper 69 that can be engaged and disengaged is fixed to the locking female portion 67 of 68, and by a resilient member 70 such as a tension spring interposed between the rear stop member 64 and the side frame portion 54, The rotating shaft 63 rotates in the direction of arrow K and is constantly elastically urged so that the stopper 69 is locked to the locking female portion 67.

Further, at the front end of the rotary shaft 63, a substantially S-shaped operation lever 71 is provided extending over the front end of the side frame portion 54 and protruding outward. These operation lever 71, rotary shaft 63, stopper
The stopper mechanism S is constituted by the 69, the stopper receiver 68, the elastic member 70 and the like.

Then, as shown in the phantom line in FIG. 14, the operating lever 71 is swung upward against the elastic force of the elastic member 70, so that the stopper 69 is released from the locking female portion 67. The movable frame body 22 can be slid back and forth with respect to the guide frame body 21, that is, the seat portion 4 and the backrest portion 5 can be reclined.

By selectively engaging the stopper 69 with the engaging female portion 67, the inclination angle of the backrest portion 5 can be adjusted and locked to suit the user's preference.

Further, as shown in FIGS. 10, 11 and 15,
On the upper surface of the front frame portion 60 of the guide frame body 21, a pair of left and right parallel standing pieces 72, 72 are provided upright, and the standing pieces 72, 72 have a swinging member.
A front end portion of 73 is swingably connected about a shaft center M via a pivot 74.

The rocking member 73 includes a pair of left and right parallel side wall portions 7.
From 5, 75, an upper wall portion 76 connecting the rear side upper end edges of the side wall portions 75, 75, and a flange-shaped wall portion 77 protruding leftward and rightward from the front side upper end edge of the side wall portion 75. Become.

A long hole 78 having a predetermined length is formed in the side wall portion 75 in the longitudinal direction, and the shaft end of a movable pulley 79 is slidably held in the long hole 78.

The movable pulley 79 has a side wall portion 75 in front of the long hole 78.
Is connected to one end of a pulling spring 80 such as a mainspring attached to the moving pulley 79, and the moving pulley 79 is always elastically urged forward.

Further, one end of the belt 27 is fixed to the shaft member 81 laterally mounted on the side wall portion 75 rearward of the long hole 78, and the belt 27 includes the movable pulley 79 and the side wall portion 75. The connecting shaft 82 connected to the rear end portion and the rotary wheel 28 are successively wound around.

Then, as shown in FIG. 6 and FIG.
A holding piece 83 is attached to the other end of 27, and an insertion bolt 84 is rotatably attached to the holding piece 83. By screwing the insertion bolt 84 into the screw hole 19, the other end of the belt 27 can be detachably attached to the auxiliary vertical rail member 10 of the fixed back portion 1.

Further, the insertion bolt 84 is provided on the back surface side of the front wall portion 10a of the sub vertical rail member 10 in correspondence with the screw hole 19 in the lowermost stage.
A changeover switch 85 that opens and closes by being screwed back and forth is provided.

Therefore, when the insertion bolt 84 is screwed into, for example, the lowest screw hole 19, when the elevating member 3 rises from the solid line state in which the guide frame 21 is grounded or brought close to the floor or the like,
When the moving pulley 79 is moved rearward along the elongated hole 78 by the belt 27 and the elevating member 3 reaches a predetermined height or more, the moving pulley 79 contacts the rear end of the elongated hole 78 to raise the elevating member 3. Accordingly, the rear end of the swinging member 73 is pulled up around the axis M as indicated by an imaginary line, so that the bottom surface 4a of the seat 4 is pushed up, and the seat 4 swings around the axis I. And lean forward.

When the elevating member 3 is raised to a predetermined height and the seat portion 4 is inclined forward to the maximum inclination angle or an inclination angle slightly before the maximum inclination angle, the pressing piece 34 (see FIG. 7) is used to move the middle step. The limit switch 18 is operated to automatically stop the lifting of the lifting member 3.

If the insertion bolt 84 is screwed into the screw hole 19 in the middle or upper stage, the forward inclination start height of the seat portion 4 is increased by the amount of the vertical difference between the screw holes 19 and 19, or The seat 4 is configured so that it can be raised in a horizontal state without the forward tilting motion.

Further, the changeover switch 85 opens and closes in accordance with the screwing position of the insertion bolt 84 into the screw hole 19, whereby the
The upper limit switch 18 and the middle limit switch 18 are automatically switched to stop the lifting of the elevating member 3 so as not to apply an excessive tension to the belt 27. The lower limit switch 18 is configured to work regardless of whether the changeover switch 85 is opened or closed as long as the guide frame 21 descends until it comes in contact with the floor or the like.

In this way, by raising the elevating member 3 by the motor 2, it is possible to assist the rising operation from the sitting position on the seat portion 4 to the middle waist or standing position. Moreover, since the seat portion 4 tilts forward automatically with the elevation of the elevating member 3 at a predetermined height or more, the standing motion can be assisted to a state closer to the standing posture.

Further, as shown in FIGS. 13 and 16, the forward tilting operation of the seat portion 4 due to the lifting of the elevating member 3 and the reclining operation of the seat portion 4 and the backrest portion 5 can be performed independently. Therefore, reclining is possible regardless of the raising / lowering position of the raising / lowering member 3.

Next, as shown in FIGS. 17 and 18, while sitting on a chair,
1 shows an example of an auxiliary table 86 suitable for writing, eating, or placing arms.

This auxiliary table 86 is provided on the upper surface 6 of the armrest 6.
a table body 87 slidably in contact with a, and an outer surface 6b and a lower surface 6 of the armrest 6 extending from the table body 87.
a pair of left and right mounting pieces 88 that come in close or slidable contact with c
It consists of 88 and.

The table body 87 has a convex front edge,
The rear edge is formed in a concave shape. The armrest 6 has a flat rectangular column shape in the illustrated example, and the mounting piece 88 corresponds to this shape.

That is, the mounting piece 88 is formed so that the side plate portion 89 vertically extends from the linear side end edge of the table body 87 and the slanted portion 89a of the side plate portion 89 project from the lower end edge of the side plate portion 89 inwardly (left and right) in an orthogonal manner. It is composed of a small bottom plate part 90 provided, and the small bottom plate part 90 is a table main body 87.
It is parallel to the table main body 87 and is arranged at a position shifted rearward from the rear end of the table body 87.

According to the auxiliary table 86, the armrests 6, 6 are slid so that the armrests 6, 6 are inserted into the auxiliary table 86 from the mounting piece 88 side. It can be attached so that it can be grasped from.

In this attached state, the lateral movements are restricted by the side plate portions 89, 89, and the upper and lower surfaces 6a, 6c of the armrest 6 are held between the table body 87 and the small bottom plate portion 90 of the mounting piece 88. Since the movement in the vertical direction is restricted, it is possible to withstand a relatively large load.

Moreover, since the auxiliary table 86 is slidably attached, the auxiliary table for the armrests 6, 6
It is easy to adjust the position before and after the 86.

Further, since the inner end edge of the table body 87 is curved in a concave shape, even if the table body 87 is projected relatively larger than the front end portions of the armrests 6 and 6, it does not easily fall out and it is safe. . Since the small bottom plate portion 90 is shifted rearward from the rear end portion of the table body 87, it can sufficiently withstand an external force applied by an elbow or the like. In addition, the auxiliary table 86
To remove it, all you have to do is slide it along the armrests 6 and 6 and pull it out.

[0094]

Since the present invention is constructed as described above, it has the following great effects.

In the chair moving stand according to claim 1, the chair is placed on the base frame 92, and while the person is seated on the chair, the chair is allowed to move integrally with the chair moving stand or pushed by another person. You can get it and move it easily. Moreover, the base frame body braking means P brakes the base frame body 92, and the positioning means N
By restricting the movement of the chair on the base frame 92 at, the chair can be freely used while it is still mounted on the base frame 92, and it is convenient to save the trouble of placing and lowering the chair one by one. is there. In particular, it is suitable for a chair moving table of a stand-up auxiliary chair that can be used as a sitting chair or a sitting chair which is troublesome to move and carry.

Further, the base frame 92 is very stable, and even if the chair is used with the chair placed on it, it is safe without wobbling or falling. Further, since the lever 93 is on the leg member 95 at the corner of the base frame 92, it does not interfere with the use of the chair, and the lever 93 is the leg member.
Since it is projected upward from 95, it can be operated conveniently even while sitting on a chair.

In the chair moving base according to the second aspect of the present invention, both the left and right front wheels 91a, 91a are pressed by the brake shoes 108, 108 for braking, so that the self-propelled movement of the base frame 92 can be reliably prevented. In addition, there is no possibility that the base frame 92 will rotate around one front wheel 91a and be displaced, and a person can sit and sit in a chair mounted on the base frame 92 and have a meal. Moreover, since braking and releasing of the two front wheels 91a, 91a are linked by the shaft 110, only one lever 93 needs to be operated, which is convenient.

In the chair moving table according to claim 3, the leg member 9 is provided.
5, the box 99 and the connecting rod 96 serve as a protective cover for the brake shoe 108, the cam member 109, the wheels 91a and 91b, and the shaft 110, so that injuries such as limbs due to contact with these parts can be prevented. And safe. Moreover, the leg member 95
Wheels 91a and 91b can be stored inside and in the box 99 to keep the height low, so it does not interfere with the use of the chair, and the chair can be used in the same condition as when using the chair alone without any problem. Can be used.

[Brief description of drawings]

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

FIG. 2 is a sectional side view.

FIG. 3 is a cross-sectional side view of a main part.

FIG. 4 is a cross-sectional plan view of a main part.

FIG. 5 is a side view of the chair.

FIG. 6 is a front view.

FIG. 7 is a partially omitted front view.

FIG. 8 is a cross-sectional plan view of a main part.

FIG. 9 is a plan view of a main part.

FIG. 10 is a plan view of a main part.

FIG. 11 is a cross-sectional view of a main part of the apparatus.

FIG. 12 is a sectional side view of a main part.

FIG. 13 is a cross-sectional side view of essential parts showing a reclining state.

FIG. 14 is an explanatory diagram of a stopper mechanism.

FIG. 15 is a cross-sectional side view of essential parts showing a forward tilting motion of the seat portion.

FIG. 16 is a cross-sectional side view of essential parts showing a reclining state and a forward tilted state of a seat portion.

FIG. 17 is a front view of a usage state of the auxiliary table.

FIG. 18 is a perspective view of an auxiliary table.

[Explanation of symbols]

 91a Front wheel 91b Rear wheel 92 Base frame 93 Lever 94 Frame 95 Leg member 96 Connecting rod 99 Box 100 Bottom plate 108 Brake shoe 109 Cam member 110 Shaft N Positioning means P Base frame braking means

Claims (3)

[Claims] 1. Positioning means N for restricting movement by placing a bottom portion of a chair on a base frame body 92 which can be driven by front and rear wheels 91a, ..., 91b ..., and a base frame body brake operable by a lever 93. The base frame 92 is provided with a means P, and the base frame 92 has a U-shaped frame 94 in plan view, a pair of left and right leg members 95, 95 fixed to both ends of the frame 94, and the both leg members 95, 95.
It is provided with a connecting rod 96 for connecting 95 and a chair mounting bottom plate 100 provided on the frame 94, and the lever 93 is arranged so as to project upward from one of the leg members 95. The front wheel 91a is provided on the leg member 95 and the frame 94
The rear wheels 91b, 91b are provided at both corners of the
A chair moving table characterized in that the outer dimensions of the base frame 92 are set to be larger than the bottom of the chair. 2. A shaft 110 having a hollow connecting rod 96.
, And the brake shoe 108 on each leg member 95.
And a cam member 109 that presses the brake shoe 108 against the front wheel 91a to brake the front wheel 91a.
The chair according to claim 1, wherein the base frame braking means P is constituted by connecting the 109 to the shaft 110 in an interlocking manner and further connecting the lever 93 to one end of the shaft 110. 3. The leg member 95 is formed in a box shape having a downward opening,
A brake shoe 108, a cam member 109 and a front wheel 91a are arranged in the leg member 95, and a rear wheel 91b is arranged in a downward opening box body 99 provided at a rear end edge of the frame 94. The chair according to claim 2.