JPH1057181A - Front apron for chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a front apron which can support the entire calves, can be utilized for the other purpose by forming a space inside and can decrease the number of parts by simplifying structure. SOLUTION: This front apron instrument for chair is provided with a front apron lateral frame 33 of which one end is supported by a waist lateral bracket 26 raised on both the sides of a seat part 21 and a front apron 31 of which one end is supported on the seat part side lower than the front apron lateral frame 33. Then, this instrument is equipped with a front apron frame 34 of which one end is supported on the side of the seat part 21 lower than the front apron 31, cylinder 35 for turning the front apron frame 34 to rising direction while attaching one end to the side of the seat part 21 and attaching the top end to the top end of the front apron frame 34, auxiliary front apron 32 fixed inside the front apron lateral frame 33, and mechanism attached to the auxiliary front apron 32 for linking the front apron frame 34 and moving the auxiliary front apron 32 forward from the rear face of the front apron 31 when the front apron frame 34 is horizontally turned.

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 barber / chair, a backrest is configured to be able to fall 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-side bracket which is erected on both sides of a seat. A front hanging frame, a front hanging frame having one end pivotally supported on the seat side 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 frame, A cylinder that has one end attached to the seat side and the tip of which rotates the front hanging frame attached to the front end of the front hanging frame in the upright direction, an auxiliary front hanging fixed inside the front horizontal frame, and an attachment to the auxiliary front hanging And a mechanism for connecting the front hanging frame to the front hanging frame and for moving the auxiliary front hanging from the rear surface of the front hanging frame forward when the front hanging frame is rotated in the horizontal direction.

[0008] A mechanism for moving the auxiliary sag to the back and front of the sag is attached to a second guide rail fixed to the auxiliary sag and a tip of the front sag frame guided by the second guide rail. It is characterized by comprising a guide roller, a first guide rail attached to the auxiliary sag, and a guide roller attached to a side surface of the sag guided by the first guide rail.

[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 on 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 in a state where the hydraulic pressure is released, the weight of the calf of the seated person and the weight of the front hanging horizontal frame 33, the auxiliary front hanging 32 and the front hanging 31 are used, 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. When the front droop is in a hanging state, the auxiliary front droop is accommodated below the back of the front hanging, and the front hanging device is in a horizontal state. When this happens, the holding sag will move forward of the sag and become an integral state, thus supporting the entire calf with the seated person lying down, and 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 main body 21 Seat 26 Waist 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

Claims (2)

[Claims] A front hanging frame whose one end is pivotally supported by a waist lateral bracket standing upright on both sides of a seat; 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, one end of which is pivotally supported on the seat side at a position lower than the front hanging, and a front hanging frame, one end of which is mounted on the seat side and the front end of which is mounted on the front end of the front hanging frame. Cylinder to be attached, an auxiliary front hanging fixed inside the front hanging horizontal frame, and connecting the front hanging frame attached to the auxiliary hanging, and
A mechanism for moving the auxiliary front hang forward from the back surface of the front hang when the front hang frame is rotated in the horizontal direction. 2. A mechanism for moving the auxiliary sag to the back and front of the sag is attached to a second guide rail fixed to the auxiliary sag and a tip of the sag frame guided by the second guide rail. 2. A guide roller according to claim 1, further comprising a guide roller, a first guide rail attached to said auxiliary sag, and a guide roller attached to a side surface of said sag guided by said first guide rail. Chair hanging device.