JP3147777B2 - Backrest support structure of hairdressing chair - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair used in a barber shop or a hairdressing salon, the chair being capable of raising and lowering a backrest. The present invention relates to a backrest support structure for a hairdressing chair in which a fulcrum and a rotation fulcrum of a seated customer's waist are substantially coincident.

[0002]

2. Description of the Related Art In a conventional barber / chair, a backrest is mounted so as to be able to be raised and lowered. A seat and a backrest are connected by a support shaft, and a rotating device for raising and lowering the backrest is a rear end of the seat or the seat. It was generally attached to the lower surface of the.

[0003]

If the rotating device for raising and lowering the backrest is installed at the rear end or the lower surface of the seat as described above, the position of the rotation support shaft for raising and lowering the backrest and the customer's position will be described. Because the rotation fulcrum position of the waist is different,
When the backrest is up and down, the positional relationship between the customer's back and the backrest of the chair is not constant, so that when the backrest is up and down, the clothes are pulled or shrunk to disturb the clothes.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to prevent the clothes from being disturbed when the backrest is raised and lowered, and to increase the thickness of the seat to increase the cushion. An object of the present invention is to provide a backrest support structure of a barber / chair that can ensure safety and safety.

[0005]

According to the present invention, a backrest support structure for a barber / beauty chair according to the present invention achieves the above-mentioned object. The means includes a seat, armrests attached to the left and right sides of the seat, and the armrest. An armrest attached along the longitudinal direction of a lower part of the armrest, an upright portion standing inside the armrest behind the armrest, and a rotational fulcrum position of a waist of a customer sitting on the seat at the upright portion; A backrest fitting is pivotally supported at substantially the same position as above and the leading end side is led out of a notch groove formed in the armrest, and a lower end is attached to a leading end part led out of the backrest fitting. A backrest, and a backrest link having one end pivotally supported by the backrest fitting and the other end rotating the backrest fitting by driving a driving means such as a hydraulic cylinder, and the driving means causes the backrest link to rotate. Displacement By rotating the backrest, the lower end of the backrest moves below the upper surface of the seat, and the backrest falls down at a position substantially coinciding with the rotational fulcrum position of the seated customer's waist. It is.

In addition, the seat, armrests attached to the left and right of the seat, armrests attached along the longitudinal direction of the lower part of the armrests, and standing inside the armrests behind the armrests. An upright portion, and a backrest fitting that is pivotally supported at a position substantially the same as the rotational fulcrum position of the customer's waist seated on the seat in the upright portion and whose leading end side is led out of a notch groove formed in the armrest. A backrest attached to a distal end portion led out of the backrest fitting; a parallel link translated in parallel by expansion and contraction of a cylinder; a vertical movement frame for vertically moving a sheet by the parallel link; A control link rotatably supported with respect to the moving frame, an extruding link connected to the parallel link for rotating the control link, and one end rotatably supported by the extruding link. Is supported by the backrest fitting and the backrest is turned by the displacement of the push-out link, and the backrest is connected so that the pivot of the backrest is located below the pivot of the upright part. A backrest link, and a seat, armrests attached to left and right sides of the seat, armrests attached along a longitudinal direction of a lower portion of the armrests, and an armrest An upright portion erected inside the rear armrest, and a notch formed at the armrest at the same position as the rotation fulcrum position of the waist of the customer seated on the seat at the upright portion and having a tip end formed in the armrest. A backrest fitting led out to the outside from the groove, a backrest attached to a tip part led out of the backrest fitting, a front hanging supported in front of the armrest fitting, and expansion and contraction of the cylinder. A parallel link that is moved in parallel, a vertical moving frame that moves the sheet up and down by the parallel link, a control link rotatably supported on the vertical moving frame, and the parallel link that rotates the control link. A push-out link connected to the link, one end of which is pivotally supported by the push-out link and the other end of which is pivotally supported by the backrest fitting; A backrest link connected such that a pivot point with the backrest fitting is located below the pivot point of the part, a forward link with one end pivotally supported on the back surface of the forward hanging, the forward link and the control link, And a spring stretched between the connection link and the control link, and the rising of the front-end is displaced by the spring force of the spring. Thus, the sag is displaced in the rising direction by its own weight and the spring force of the spring.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a backrest support structure for a barber / beauty chair according to the present invention will be described below with reference to the drawings.
In FIG. 1, 1 is a pedestal, 2 is a seat that moves up and down by depressing a pedal 1a provided on the pedestal 1, and an armrest 2b fixed to the left and right sides along the front-back direction of the seat. An armrest 2a is attached.

Reference numeral 3 denotes a backrest that rises and falls behind the seat 2 on a standing portion 2c formed behind the armrest fitting 2b via a backrest fitting 12, which will be described later. Reference numeral 4 denotes a pin at the front end of the armrest fitting 2b. When the seat 2 is raised by connecting the front hanging member 4a rotatably supported by the front hanging member 4a rotatably supported by the 4b and the seat 2 is raised, the backrest 3 and the front hanging member 4 fall down (the position indicated by the two-dot chain line in FIG. 1). When the seat 2 is lowered, the backrest 3 and the front hanging 4 stand up (solid line position).

Next, details of the internal structure will be described with reference to FIGS. A U-shaped base frame 5 having an open top is mounted in the pedestal 1, and the cylinder side of a cylinder 6 such as a hydraulic or air cylinder is pivotally supported by a pin 6 a at the bottom of the base frame 5. Further, on both upper sides of the base frame 5, parallel links 7, 8 are supported by pins 7a, 8a.

A shaft 7b for connecting the parallel links 7 on both sides is inserted through an intermediate portion of the parallel link 7, and a tip of a piston 6b of the cylinder 6 is supported at an intermediate portion of the shaft 7b. . Further, a U-shaped vertical moving frame 9 whose lower part is opened is axially supported by pins 7c, 8c at the ends of the parallel links 7, 8 so that the parallel links 7, 8 are in a parallel state.

The parallel link 8 is formed with a connecting portion 8b whose tip end is bent, and one end of an inverted S-shaped push-out link 10 is pivotally supported by the connecting portion 8b by a pin 10a. The other end of the pushing link 10 has one end of an L-shaped backrest link 11 pivotally supported by a pin 11a.

On the other hand, a backrest fitting 12 to which a backrest 3 is attached is pivotally supported by a pin 12a on an upright portion 2c of an armrest fitting 2b fixed to the left and right of the seat 2 described above. Is substantially the same as the position of the fulcrum of the waist of the customer sitting on the seat. In addition, the backrest fitting 12 is led out from a notch groove 2d formed behind the armrest 2a (see FIG. 4).

The tip of the push-out link 11 is pivotally supported on the backrest 12 by a pin 11b. Further, the hanging metal fitting 4 which constitutes the above hanging 4
One end of a is pivotally supported by a pin 4b at the tip of the armrest fitting 2c, and one end of a front hanging link 13 is pivotally supported by a pin 13a in the metal fitting 4c near the sheet of the hanging metal fitting 4a.

Reference numeral 14 denotes a connecting link in which the other end of the forward link 13 is pivotally supported by a pin 13a. Reference numeral 15 denotes a pin 1 at a pivot of the pushing link 10 and the backrest link 11.
1a is a control link pivotally supported by 1a. The control link 15 is bent in an L shape, and the other end of the connection link 14 is pivotally supported by the bent portion by a pin 14b.

The control link 15 and the connecting link 14
A spring 16 is stretched at a substantially intermediate point between the control link 15 and a push pin 15 a protruding from the tip of the control link 15 is in contact with the side surface of the connection link 14. In other words, the pushing pin 15a comes into contact with the connection pin 14 being pulled by the spring 16.

Next, the customer is shifted to the shampoo position from the state where the seat 2 in FIG. 2 is in the lowered position and the backrest 3 and the front hanging member 4 are upright, that is, the seat 2 in FIG. The operation in which the backrest 3 and the front hanging 4 shift to a horizontal state will be described.

When hydraulic pressure or high-pressure air is supplied to the cylinder 6 in the state shown in FIG. 2, the piston 6b is extended and the parallel link 7b is rotated counterclockwise. As a result, the parallel link 8 also rotates counterclockwise, so that the up-and-down moving frame 9 rises substantially vertically and raises the seat 2.

When the push-up link 10 is raised by rotating the parallel link 8 counterclockwise, the tip of the push-up link 10 turns the control link 15 counterclockwise about the pin 14b as a fulcrum. The backrest link 11 pivotally supported by the pin 11a with the control link 15
Down. As a result, the backrest 12 is connected to the pin 12a.
Is pivoted counterclockwise with the fulcrum as a fulcrum, and the backrest 3 is pivoted counterclockwise to fall down.

When the backrest 3 falls down, the backrest 3
Since the position of the rotation fulcrum is substantially the same as the position of the rotation fulcrum of the waist of the customer sitting on the seat 2, no force is exerted to push up the upper body of the customer, so that the clothes of the customer may be pulled upward. No, so there is no disruption of clothing.

On the other hand, when the control link 15 is rotated in the counterclockwise direction, the connecting link 14 pivotally supported by the vertical frame 9 via the pin 14b is pushed by the push-out pin 15a of the control link 15 so that the spring 16 Since it is turned counterclockwise against the spring force, the front hanging bracket 4a is turned counterclockwise via the front hanging link 13 to fall down parallel to the seat 2. Thus, the customer can be shampooed.

Next, a description will be given of the operation of shifting from the shampoo state to the upright state shown in FIG. When the hydraulic or high-pressure air is released from the cylinder 5, the piston 6b of the cylinder 5 contracts due to the weight of the customer, the seat 2, the backrest 3 and the front hanging member 4. As a result, the parallel links 7, 8 are rotated clockwise, and the vertical moving frame 9 descends substantially vertically.

When the parallel link 8 is rotated in the counterclockwise direction, the push-out link 10 moves down.
5 is rotated clockwise, so that the backrest link 11 rotates the backrest fitting 12 clockwise, and returns the backrest 3 to the upright state. At this time, no force in the direction of contraction acts on the clothes of the customer.

On the other hand, when the control link 15 is rotated clockwise, the regulation of the connecting link 14 by the push-out pin 15a is released, and the weight of the customer's foot and the weight of the front hanging 4 causes the hanging metal 4a to move clockwise. , And the hang 4 is in the standing state.

If an article is present between the hang 4 and the pedestal 1 while the hang 4 is standing, the rear side of the hang 4 contacts the article during the hang of the hang 4, and further hangs. 4 is prevented from standing. At this time, the control link 15 is further rotated clockwise by the lowering of the push-out link 10, but since the connection link 14 is rotated clockwise by the spring force of the spring 16, the rotation of the connection link 14 Even if the movement is prevented by the stop of the hang 4, the spring 16 extends and no excessive force acts on the hang 4,
Therefore, damage to the article can be prevented.

[0025]

As described above, according to the present invention, since the position of the fulcrum where the backrest is raised and lowered substantially coincides with the position of the fulcrum of the waist of the seated customer, the clothes of the customer are rubbed. Without disturbing the clothing of the customer.

Further, since the rotating device for raising and lowering the backrest is accommodated in the armrests provided on the left and right of the seat, the rotating device for raising and lowering between the seat and the backrest and on the lower surface of the seat is provided. There is no need to arrange a rotating device such as a link, and therefore, there is an effect that a high cushioning property and safety of the seat can be obtained.

[Brief description of the drawings]

FIG. 1 is an overall side view of a hairdressing chair according to the present invention in which a safety device for hanging forward is incorporated.

FIG. 2 is a side view showing a state in which the backrest is erected by the above link mechanism.

FIG. 3 is a side view showing a state in which the backrest is lying down.

FIG. 4 is a perspective view of the armrest as viewed from the rear.

[Explanation of symbols]

 2 Seat 2a Armrest 2b Armrest 3 Backrest 6 Cylinder 7,8 Parallel link 9 Vertical movement frame 10 Extrusion link 11 Backrest link 12 Backrest 15 Control link

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-58-49110 (JP, A) JP-A-2-180207 (JP, A) JP-A-63-50242 (JP, U) JP-A-4-50 40838 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47C 1/00-1/06

Claims (3)

(57) [Claims] 1. A seat, an armrest attached to the left and right sides of the seat, an armrest attached along a longitudinal direction of a lower portion of the armrest, and an upright standing inside the armrest behind the armrest. An upright portion, and a backrest fitting that is pivotally supported at a position substantially the same as the rotational fulcrum position of the customer's waist seated on the seat in the upright portion and whose leading end side is led out of a notch groove formed in the armrest. A backrest having a lower end attached to a front end portion led out of the backrest, and one end pivotally supported by the backrest and the other end driven by driving means such as a hydraulic cylinder. The backrest link is displaced by the driving means to rotate the backrest fitting, whereby the lower end side of the backrest moves below the upper surface of the seat and is seated. And A backrest support structure for a hairdressing chair, characterized in that the backrest falls down at a position substantially coincident with the rotational fulcrum position of the customer's waist. 2. A seat, an armrest attached to the left and right sides of the seat, an armrest attached along a longitudinal direction of a lower portion of the armrest, and an upright standing inside the armrest behind the armrest. An upright portion, and a backrest fitting that is pivotally supported at a position substantially the same as the rotational fulcrum position of the customer's waist seated on the seat in the upright portion and whose leading end side is led out of a notch groove formed in the armrest. A backrest attached to a distal end portion led out of the backrest fitting; a parallel link translated in parallel by expansion and contraction of a cylinder; a vertical movement frame for vertically moving a sheet by the parallel link; A control link rotatably supported on the moving frame, an extruding link connected to the parallel link for rotating the control link, and one end supported by the extruding link and the other end The backrest is pivotally supported by the backing bracket and is connected such that the pivot point of the backrest bracket is located below the pivot point of the upright portion with the backrest bracket being rotated by the displacement of the push-out link. A backrest support structure for a barber / beauty chair, comprising a backrest link. 3. A seat, an armrest attached to the left and right sides of the seat, an armrest attached along a longitudinal direction of a lower portion of the armrest, and an upright standing inside the armrest behind the armrest. An upright portion, and a backrest fitting that is pivotally supported at a position substantially the same as the rotational fulcrum position of the customer's waist seated on the seat in the upright portion and whose leading end side is led out of a notch groove formed in the armrest. A backrest attached to a distal end portion led out of the backrest fitting, a front hanging supported in front of the armrest fitting, a parallel link that is translated by expansion and contraction of a cylinder, and the parallel link. A vertical movement frame for moving the sheet up and down by
A control link rotatably supported on the vertical movement frame, an extruding link connected to the parallel link for rotating the control link, and one end supported by the extruding link and the other end The backrest is pivotally supported by the backing bracket and is connected such that the pivot point of the backrest bracket is located below the pivot point of the upright portion with the backrest bracket being rotated by the displacement of the push-out link. A backrest link, a front hanging link having one end pivotally supported on the back surface of the front hanging, a connecting link connecting the front hanging link and the control link, and a tensioned link between the connecting link and the control link. And a spring, wherein the rising of the front hanging is caused by displacing the connection link by a spring force of the spring,
The backrest support structure of a barber / beauty chair, wherein the forward slant is displaced in the rising direction by its own weight and the spring force of the spring.