JP3096641B2 - Chair stool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seating device in which a seat is in a seated state, and a forward slant is at a position substantially perpendicular to the seat. The present invention relates to a hairdressing chair, a dental treatment chair, or a device for hanging a seat of a vehicle such as an aircraft, which is in a moving position and supports a calf portion of a seated person.

[0002]

2. Description of the Related Art For example, in a hairdressing and beauty chair, the backrest can be turned down during shaving or shampooing. There is a type in which the front hanging is also rotated in a horizontal state so as to support the portion.

[0003] By the way, the above-mentioned forward-sloping pivoting mechanism is designed so that the forward-slung is rotated by a link mechanism using the tip of the seat and the upper end of the forward-slung as a fulcrum. Since the part of the seated person supported is a part close to the knee of the calf, there is a problem that the legs become tired in this state for a long time.

[0004] In order to solve the above-mentioned problem, the present applicant moves the roll constituting the hang in front of the hang when the hang is shifted to the horizontal state, and extends the sheet by moving the roll. Developed a drooping device that substantially increases the length of drooping to support the entire calf of a seated person.

[0005]

However, in the above-mentioned hanging apparatus, a roller massage mechanism for moving the roll inside the hanging, an air cooling mechanism for cooling or warming the feet, and the like. It is not possible to incorporate a hot air mechanism, which causes problems such as a decrease in service to customers. Further, a mechanism for moving a roller in a hanging direction and a mechanism for winding a sheet are required. However, there is a problem that the structure is complicated and the cost is high.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to support the entire calf and to form a space inside so that it can be used for other purposes. Another object of the present invention is to provide a chair hanging device which has a simple structure and can reduce the number of parts.

[0007]

SUMMARY OF THE INVENTION A chair hanging device according to the present invention achieves the above-mentioned object. The device comprises a waist racket which is erected on both sides of a seat. A front hanging frame, a front hanging frame whose one end is pivotally supported on the seat side at a position lower than the front hanging horizontal frame, and a front hanging frame whose one end is pivotally supported on the seat side at a position lower than the front hanging horizontal frame, Slidably move with respect to the front hanging frame.
A second guide rail movably mounted and the second guide rail;
An auxiliary front hanging attached to the drain and the second guide
Move the rail forward and backward and the tip of the hanging frame
And pivots the hanging frame in the upright direction.
A cylinder and the front mounted on the back side of the auxiliary droop
The guide roller mounted on the side of the hang is guided
And a first guide rail, wherein the first guide rail is
The cylinder has contracted in relation to the guide roller.
The auxiliary droop to the back side of the droop
With the cylinder extended,
Move to the tip of the droop and move to the same position
It is formed in the shape to be made.

[0008]

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A chair hanging device according to the present invention will be described below with reference to the drawings. Fig. 1 is a side view of the main part with the hang down, Fig. 2 is a side view of the main part with the hang down horizontal, 1 is a base mounted on the floor, The circuit is housed. 2 is before and after 2
A seat substrate 22 (see FIG. 3) having a divided seat 21 is a chair body attached to the hydraulic unit, and a back (not shown) behind the seat substrate 22 (left side in the figure). The backrest is rotatably mounted.

An armrest 23 is attached to the chair body 2 and a step stand 24 fixed down from the seat 21.
Is installed. Numeral 3 designates a front hanging device which is lowered by a mechanism which will be described in detail later. When the backrest is in an upright state, the front hanging 31 of the front hanging device 3 becomes parallel to the vertical portion 24a of the step 24 as shown in FIG. Further, when the backrest falls down, as shown in FIG. 2, the backrest is separated from the vertical portion 24a and becomes a horizontal state.

Next, details of the hanging device 3 will be described. The front hanging device 3 according to the present invention includes a front hanging 31 whose upper end is pivotally supported at a pivot fulcrum b by a front hanging bracket 25 fixed to the left and right sides of the seat portion 21, and a front surface of the front hanging 31 from the back surface of the front hanging 31 in a horizontal state. An auxiliary front hanging 32 that projects,
Hip and waist bracket 2 fixed to both left and right sides of the seat 21
6 has an upper end pivotally supported at a pivot point a, and a front hanging horizontal frame 33 for preventing the seated person's calf from shifting left and right.

The auxiliary front hanging member 32 is fixed to the front inside of the front hanging horizontal frame 33 via a mounting plate 32a. A first guide rail 32b for slidably guiding a guide roller (bearing) 31a attached to the front end side surface of the front hanging member 31 is attached inside the attachment plate 32a.
Further, the second guide rail 32 is also provided on the back surface of the mounting plate 32a.
c is attached.

The second guide rail 32c has a guide roller 34a attached at one end thereof to a leading end of a front hanging frame 34 pivotally supported by the waist lateral bracket 26 at a pivot point c.
Are slidably guided. The front end portions of the pair of left and right front hanging frames 34 are connected by a shaft 34b, and one end of the shaft 35b is attached to the end of a piston 35a of a cylinder 35 having one end attached to the seat substrate 22. Reference numeral 34c is a reinforcing rod connecting the left and right front hanging frames 34.

A spring 35b is stretched between a pivot point between the cylinder 35 and the seat substrate 22 and a pivot point between the piston 35a and the shaft 34b. In the above description of the configuration, only one side has been described. However, except for the cylinder 35, the members are arranged symmetrically as shown in FIG.

Next, the operation will be described based on the above configuration. As shown in FIG. 1, when the front hanging 31 is in the hanging state, the cylinder 35 is in a contracted state by the spring force of the spring 35b. For this reason, the forward slant 31 is rotated clockwise by its own weight about the shaft fulcrum b.

At this time, since the front hanging horizontal frame 33 is also rotated clockwise about the shaft supporting point a higher than the shaft supporting point b, the auxiliary front hanging attached to the lower end of the front hanging horizontal frame 33 is also supported. The 32 second guide rails 32c are guided by the guide rollers 34a and are raised. As a result, the first guide rail 32b of the auxiliary sagging 32 is guided by the guide roller 31a attached to the sagging 31 and the sagging 31
Has been moved to the lower side of the back surface of.

In this state, the operation of supplying hydraulic pressure to the cylinder 35 to shift the front hanging 31 to a horizontal state with the backrest (not shown) falling down will be described. Supply hydraulic pressure to make piston 35a of cylinder 35 spring 35b.
, The front hanging frame 34 is rotated counterclockwise about the pivot point c.

When the front hanging frame 34 is rotated, the mounting plate 32a fixed to the second guide rail 32c of the front hanging frame 34 is pushed up.
The front hanging horizontal frame 33 whose tip is fixed to 2a
, And the front hanging 31 connected to the first guide rail 32b of the mounting plate 32a via the guide roller 31a is rotated counterclockwise about the shaft fulcrum b.

In this rotation, the axis fulcrum c of the front hanging frame 34 and the axis fulcrum a of the front hanging horizontal frame 33 have the upper fulcrum a, so that the second guide rail 32c is moved with respect to the guide rollers 34a of the front hanging frame 34. It moves forward (rightward in FIGS. 1 and 2) while sliding.

When the second guide rail 32c moves forward, the mounting plate 32a on which the guide rail 32b is guided by the guide roller 31a of the front hanging 31 moves forward of the front hanging 31 so that the auxiliary front hanging 32 extends on the extension of the front hanging 31. Moving. Accordingly, in a state in which the auxiliary front droop 32 and the front droop 31 are integrated, the length of the front droop becomes substantially longer, and the whole calf of the seated person is supported.

In addition, the auxiliary droop 32 shown in FIG.
In order to return to the state shown in FIG. 2 from the state moved on the extension line of FIG. 2, when the projection output by the hydraulic pressure of the cylinder 35 is released, the piston 35a returns by the spring force of the spring 35b. The front droop 31 is in a hanging state while being retracted.

In addition, in order to make the front hanging 31 drop,
The spring 35b is not always necessary, and the spring 35b is operated in accordance with the weight of the calf of the seated occupant and the weight of the front hanging horizontal frame 33, the auxiliary front hanging 32 and the front hanging 31 in a state where the hydraulic pressure is released, or a reciprocating cylinder is used. May be used.

Further, in the above-described embodiment, the use of a bearing as a guide roller for smooth movement has been described, but this may be realized by a link mechanism. Instead of 35,
You may make it operate manually using a gas cylinder.

[0024]

As described above, according to the present invention, a front hanging device is constituted by a front droop and an auxiliary front droop, and when the front droop is in a hanging state, the auxiliary front droop is accommodated below the back surface of the front hanging and the front hanging device is in a horizontal position. When this happens, the holding sag will move forward of the sag and become an integrated state, thus supporting the entire calf with the seated person lying down, maintaining a relaxed posture Can be.

Further, since nothing is present inside the hang-down, a vibrator mechanism and an air-cooling / hot-air device for cooling or heating the feet can be installed in the hang-down to maintain a good customer environment. In addition, since the structure is simple, the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a side view of a front hanging device in a chair hanging device according to the present invention in a hanging state.

FIG. 2 is a side view in which the above-mentioned forward droop has shifted to a horizontal state.

FIG. 3 is a plan view of the same.

[Explanation of symbols]

 2 Chair body 21 Seat 26 Waist and side bracket 3 Front hanging device 31 Front hanging 31a Guide roller 32 Auxiliary front hanging 32a Mounting plate 32b First guide rail 32c Second guide rail 33 Front hanging horizontal frame 34 Front hanging frame 34a Guide roller 35 cylinder

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-37907 (JP, A) JP-A-1-108140 (JP, U) JP-A-36-33028 (JP, Y1) (58) Field (Int.Cl. ⁷ , DB name) A47C 1/00-1/06 A61G 15/00-15/12 B64D 11/06

Claims (1)

(57) [Claims] 1. A front hanging frame whose one end is pivotally supported by a waist lateral racket standing on both sides of a seat, and a front hanging whose one end is pivotally supported by the seat at a position lower than the front hanging horizontal frame. ,
A front hanging frame having one end pivotally supported on the seat side at a position lower than the front hanging, and sliding with respect to the front hanging frame;
A second guide rail movably mounted,
An auxiliary front droop attached to the second guide rail;
Move the second guide rail back and forth, and
Attached to the tip of the
Attached to the back of the cylinder that rotates and the auxiliary hang
And a guide roller mounted on the side of the hang
A first guide rail included therein , wherein the first guide rail is related to the guide roller,
In the state where the cylinder is contracted,
Moved to the back side of the front hanging, and the cylinder is extended
When the auxiliary droop is moved to the tip side of the droop
Both are formed so that they can be moved to the same level
A device for hanging a chair forward.