JP2014200475A - Hairdressing chair - Google Patents

Abstract

[PROBLEMS] To be able to adjust the position of the backrest according to the sitting height of the person to be seated, and to fall the backrest even in a comfortable posture with the backrest tilted To provide a reclining type hairdressing and beauty chair that interlocks and tilts the seat back. A backrest 7 is divided into two parts, a lower backrest 7a and an upper backrest 7b, and a lower backrest frame 8a is supported so as to be pivotable in the front-rear direction about a lower pivot point 10 and a lower portion. A four-bar parallel link mechanism is formed on the back side of the backrest 8a with one side extending between the upper end 23 of the lower backrest frame and the lower rotation fulcrum 10. The lower backrest frame is located behind the rotation fulcrum. The upper nodal point 23 of the four-node parallel link mechanism rotates upward when tilted to the upper side, and an upper back mounting plate 27 is fixed to the rotating nodal point 23, and the upper part The upper backrest 7b was attached to the backrest mounting plate. [Selection] Figure 1

Description

  The present invention relates to a reclining type hairdressing and beauty chair in which the backrest can be tilted in the front-rear direction.

  Conventionally, as a hairdressing and beauty chair, a fixed backrest type and a reclining type capable of tilting the backrest are widely known. For example, Document 1 is a chair having a headrest on the backrest, and the headrest is automatically locked even when only the headrest is raised from a completely resting state where the backrest and the headrest are both lying down. In addition, a chair is shown that allows the headrest to automatically stand up and automatically lock when the backrest is raised from a fully rested state. Patent Document 2 discloses an easy chair in which the backrest and the tilt of the headrest are interlocked so that the headrest always maintains a constant angle with respect to the seat.

JP 2003-111635 A Japanese Utility Model Publication No. 62-153935

  In a hairdressing and beauty chair with a fixed backrest, it is impossible to take an easy posture by overturning the backrest. In addition, in a hairdressing and beauty chair with a reclining structure as shown in the above patent document, it can be used for shaving and massage by tilting the backrest, but in a comfortable posture with the backrest tilted to a predetermined angle. For haircut or perm treatment, if you want to face the face of the person you are sitting on to the front (in the direction of the mirror), raise the headrest and stand only with the head above the neck facing the front. However, it was difficult to maintain the posture for a long time.

  Further, in the conventional barber / beauty chair, the length of the backrest is constant and cannot be adjusted according to the sitting height of the person to be treated, and the back of the person to be treated can be held in the best condition. was difficult. Furthermore, when the backrest collapses, the position of the buttocks of the patient to be seated shifts forward, making it difficult to ensure a stable seating posture.

  The present invention has been made to solve the above-mentioned problems. In a reclining type barber / beauty chair, when the backrest is divided into two parts, and the backrest is tilted, the upper backrest portion is moved forward. By standing up and pushing the upper half of the back forward with a backrest, the face of the patient can be easily turned to the front even in a comfortable position, and the seating height of the person to be seated should be adjusted. By making the upper back part adjustable in the vertical direction, it is possible to hold the shoulder ribs in a stable manner and take a comfortable posture. It is an object of the present invention to provide a barber / beauty chair in which the position of the buttocks is not shifted forward when the backrest is tilted by tilting the back part.

In order to achieve the above object, the present invention employs the following means.
That is, the barber / beauty chair according to claim 1 is a reclining type barber / beauty chair provided with a seat, a front sag, and a backrest, and the backrest is divided into a lower backrest and an upper backrest. The lower back frame, which is divided and attached to the lower back, is supported so as to be pivotable in the front-rear direction around the pivot point at a desired position near the lower part, and the lower back frame is mounted on the back side of the lower back. Forming a four-bar parallel link mechanism with one side between the upper end of the four-wheel parallel pivot and the pivot point, and the upper part of the four-bar parallel link mechanism when the lower backrest frame is tilted backward about the pivot point. The side nodal point is pivoted upward, and the upper backrest mounting plate is fixed to the upwardly pivoting node, and the upper backrest mounting plate is fixed to the upper backrest mounting plate. Characterized by having attached A.

  Further, the invention described in claim 2 is the barber / beauty chair according to claim 1, wherein the seat is supported so as to be swingable in the front-rear direction at a substantially central position in the front-rear direction, and the seat is made swingable. The front sag is connected to the front end of the front slidably and the front sag lifting rod is connected between the front sag and the lower front end of the lower backrest frame, and the lower backrest frame is tilted backward. When the forward / lowering rod moves forward and pushes the forward suspension upward, the tilting lower backrest frame pushes down the seat portion toward the rear centering on the swing fulcrum and tilts. It is a feature.

  According to a third aspect of the present invention, in the barber / beauty chair according to the first or second aspect, the vertical position of the upper backrest can be adjusted between the upper backrest mounting plate and the upper backrest. A position adjustment mechanism is provided.

  According to the first aspect of the present invention, when the backrest is tilted, the upper backrest is turned upright by the action of the four-bar parallel link mechanism provided on the back surface of the lower backrest. By pushing the upper half of the back of the subject seated by the upper back leaning forward, the face of the patient can be easily turned to the front (mirror direction) even when the back is tilted be able to.

  According to the second aspect of the invention, in conjunction with the fall of the backrest, the front droop can be pushed up and the seat can be tilted backward, so that the position of the buttocks is forward when the seat is tilted. It can be held in a stable posture without being distorted.

  According to the third aspect of the present invention, the vertical position of the upper backrest can be adjusted in accordance with the sitting height of the person to be seated, so that the upper backrest can stably stabilize the vicinity of the shoulder rib on the back. Can be held in a comfortable position with less burden.

It is a side view at the time of the backrest standing state of the barber / beauty chair according to the embodiment. It is a back perspective view of the barber / beauty chair according to the embodiment. It is a side view at the time of the backrest tilt state of the barber / beauty chair according to the embodiment. It is a perspective view of the connection mechanism part of a lower backrest and an upper backrest. It is a side view of the connection mechanism part of a lower backrest and an upper backrest.

Hereinafter, an embodiment of a barber / beauty chair according to the present invention will be described with reference to the drawings.
In FIG. 1 to FIG. 3, reference numeral 1 denotes a pedestal fixed to the floor surface, and 2 denotes a support column erected at the center position of the pedestal 1, and a base 3 is fixed to the upper end portion of the support column 2. The seat mounting plate 4 is pivotally supported by the shaft support plate 5 and the pin 5b so as to be rotatable in the vertical direction. A seat portion 6 composed of a spring, a cushion, or the like is attached to the upper surface of the seat portion mounting plate 4.

  The backrest 7 is divided into a lower backrest 7a and an upper backrest 7b. The pair of left and right lower backrest frames 8a to which the lower backrest 7a is attached has a lower tip portion that is bent outwardly in a naginata shape, and is supported by a pin 10 provided at a position near the lower end portion in the front-rear direction. And is rotatably connected to one end portion of the air cylinder 11 by a pin 9 at the tip end position. The piston rod 12, which is the other end of the air cylinder 11, is rotatably connected to a rod mounting plate 13 fixed to the lower surface of the front end of the base 3 by a pin 14.

  One end of a link 32 is pivotally supported on the pin 9 at the tip of the lower backrest frame 8, and the other end of the link 32 is connected to the rear of the base 3 by a pin 15 and a mounting plate 16. It is rotatably connected to the bottom surface of the end. Further, one end of a front hanging rod 17 is pivotally attached to the pin 9 and the other end of the front hanging rod 17 is drooped by a pin 18 (see FIG. 3). The mounting plate 19 is rotatably connected. A front sag 20 composed of a spring, a cushion or the like is attached to the outer surface of the front sag mounting plate 19.

  The front sag mounting plate 19 with the front sag 20 attached thereto is rotatably connected to the tip of the seat mounting plate 4 by a connecting pin 20a, and is pushed forward by the front sag raising / lowering rod 17, so that FIG. 3 is pushed up from the state of FIG. 3 to the state of FIG.

  Further, a U-shaped link 21 is pivotally supported with respect to the pin 10 at an inner position of the lower backrest frame 8a. One protruding piece 21a of the rotatable link 21 is fixed to the lower surface of the seat mounting plate 4, and the other protruding piece 21b is outside the lower backrest frame 8a. It is formed in a length reaching up to, and is arranged to project obliquely downward. And the rotation rod 22 is spanably spanned between the front-end | tip parts of the protrusion piece part 21b of the left-right paired link 21 which carried out the character shape (refer FIG. 3).

  On the other hand, on the upper end of the lower backrest frame 8a, a rotating rod 23 is rotatably spanned between a pair of left and right lower backrest frames 8a (see FIG. 3). A pair of left and right links 24 are fixed to the rotating rod 23 by welding or the like at the center position of the rotating rod 23 so as to be inclined obliquely outward and rotated integrally with the rotating rod 22. Has been. Further, a second rotating rod 25 is rotatably spanned between the distal ends of the pair of left and right links 24.

  A long plate-like link plate 26 is stretched over the second rotary rod 25 and the rotary rod 22 on the lower side of the lower backrest frame 8a, and the upper and lower ends of the link plate 26 are rotated by welding or the like. The moving rods 25 and 22 are integrally connected. Due to the connection by the link plate 26, the upper link 24 is rotated together through the link plate 25 when the link 21 having a lower-side shape is rotated. That is, the pin (node point) 10, the link 21, the rotating rod (node point) 22, the link plate 26, the rotating rod (node point) 25, the link 24, and the rotating rod 23 (node point) are so-called four. A joint parallel link mechanism is formed.

  Furthermore, an upper backrest connecting plate 27 is fixed to the rotating rod 23 constituting the four-bar parallel link mechanism integrally with the rotating rod 23 by welding or the like. The backrest connecting plate 27 is also configured to rotate integrally. The upper backrest 7b is configured to rotate integrally with the connecting plate 27 by attaching the upper backrest 7b to the upper backrest connecting plate 27.

4 and 5 show the detailed structure of the connecting mechanism between the upper backrest connecting plate 27 and the upper backrest 7b.
A connecting plate insertion portion 28 is provided on the upper backrest mounting plate 8b on the back surface of the upper backrest 7b. The connecting plate insertion portion 28 is formed with a connecting plate insertion hole 28a having the same cross-sectional shape as the upper backrest connecting plate 27 and having a slightly larger dimension. The lower backrest 7a and the upper backrest 7b are connected by inserting the upper backrest connecting plate 27 into the connecting plate insertion hole 28a.

  The connecting plate insertion portion 28 also includes a position adjustment mechanism for adjusting the vertical position of the upper backrest 7b. In other words, a lever-like stopper 29 is mounted on the upper surface of the connecting plate insertion portion 28 with a screw 30, and a spring 31 is contracted between the screw 30 and the stopper 29, and the extension of the spring is extended. The lock piece 29a at the tip of the stopper is always pressed against the upper surface of the connecting plate insertion portion 28 by force. An upper backrest mounting plate inserted in the connecting plate insertion hole 28a is formed on the upper surface of the connecting plate insertion portion 28 with a window 28b large enough to receive the lock piece 29a at the tip of the stopper 29. A window (not shown) of the same size is also formed at a predetermined position in 27.

  Accordingly, when the window of the upper backrest mounting plate 27 inserted inside is aligned with the position of the window 28b of the connecting plate insertion portion 28, the lock piece 29a at the tip of the stopper is moved by the force of the spring 31 to the window of the connecting plate insertion portion 28. 28a enters the window of the upper backrest mounting plate 27 inside and locks the upper backrest 7b in this position. As a result, the upper backrest 7b is fixed in place.

  On the other hand, when the handle portion 29b of the stopper 29 is pushed downward, the lock piece 29a at the tip of the stopper is lifted against the spring 31 and disengages from the engaged window 28b. In this state, the upper backrest 7b Can be pushed down to a position where the upper backrest 7b hits the lower end of the narrow hole 39 of the upper backrest mounting plate 27.

  If a plurality of windows are formed on the upper backrest mounting plate 27, the position of the upper backrest 7b can be adjusted over a plurality of stages. A narrow hole 39 vertically drilled in the central portion of the upper back mounting plate 27 is a hole for limiting the vertical adjustment range of the upper back 7b. Further, it is a relief hole for avoiding contact with the tip of the screw 30 for attaching the stopper 29.

  Reference numeral 33 denotes a cylinder lock release lever provided on the left and right side portions of the seat portion 6, which is rotatable about a pin 34 as a fulcrum, and is connected to the piston rod 12 by a connecting rod 35 attached to the lower end of the lever. It is connected to the lock release unit 36 at the tip.

  37 is an armrest attached to both sides of the seat 6, and 38 is a foot for raising and lowering the seat, which is operated by stepping on the bar 38 with the foot. The base 3 attached to the tip is moved up and down in the vertical direction to adjust the vertical position of the seat portion 6.

Next, the operation when the backrest 7 is tilted from the standing state of FIG. 1 to the comfortable posture state of FIG. 3 will be described.
First, when the person to be treated is seated on the seat 6, the stopper 29 of the position adjusting mechanism provided on the back side of the upper back 7b is operated, and the upper back 7b is seated. The position is adjusted up and down to hit the shoulder of the practitioner.

  Next, the cylinder lock release lever 33 is operated to release the lock of the air cylinder 11. In this unlocked state, when the sitting patient puts weight on the backrest 7, the backrest 7 rotates clockwise (rearward) with the pin 10 of the lower backrest frame 8a as a fulcrum. Go.

  When the lower backrest frame 8a is rotated clockwise around the pin 10 as a fulcrum, the air cylinder 11 connected to the pin 9 at the lower end of the lower backrest frame 8a is compressed and slowly caused by its buffering action. It turns toward the front side. As a result, the front drooping rod 17 connected to the pin 9 is also pushed forward, and the front droop 20 is pushed upward. At the same time, the seat portion 6 is rotated clockwise around the pin 5b of the shaft support plate 5 provided near the center portion of the base 3, and the rear end portion of the seat portion 6 is lowered.

  On the other hand, when the lower backrest frame 8a rotates clockwise as described above, the crossing angle between the protruding piece portion 21b of the U-shaped link 21 and the lower backrest frame 8a is shown in FIG. As shown in the figure, the protruding piece 21b of the link 21 gradually rises with respect to the lower backrest frame 8a by the four-node parallel link action. As a result, the link plate 26 constituting the four-bar parallel link mechanism pushes up the upper rotating rod 25 and rotates the rotating link 24 connected to the rotating rod 25 upward. The rotating rod 23 to which the moving link 24 is fixed rotates counterclockwise (in FIG. 1).

  When the rotating rod 23 is rotated counterclockwise, the upper backrest mounting plate 27 fixed to the rotating rod 23 rotates toward the front side, and is attached to the upper backrest mounting plate 27. The upper backrest 7b is also turned toward the front side, and the upper backrest 7b is always held in the same direction as the standing state of FIG.

  When the lower backrest frame 8a is further rotated rearward depending on the weight of the seated patient, the front hanging rod 17 pushes up the front hanging 20 to a predetermined angular position, and the rear end of the seat portion 6 is moved. As shown in FIG. 3, the seat 6 is pushed down to a predetermined position, and the seat 6 is tilted.

  In this way, when the piston rod 12 of the air cylinder 11 is retracted to the maximum retracted position as shown in FIG. 3, the lower backrest frame 8a cannot be rotated any further, and the comfort posture shown in FIG. Stopped. As a result, the front sag 20 is lifted from the state shown in FIGS. 1 to 3, and the seat 6 is tilted from the horizontal state shown in FIG. Furthermore, as shown in FIG. 3, the upper backrest 7b is held in an upright state in the same direction as FIG. 1 by a four-bar parallel link mechanism formed on the back surface portion of the lower backrest frame.

  As described above, according to the barber / beauty chair according to the embodiment, the face of the sitting patient always keeps facing the front (the direction of the mirror) even though the backrest is tilted. Can do. In addition, the upper backrest can be adjusted to the optimal height according to the sitting height of the patient when seated, so that the upper backrest can stably hold the area around the shoulder ribs of the back and take a comfortable and comfortable posture. Can be made. Furthermore, since the seating surface is tilted in conjunction with the fall of the backrest, it is possible to prevent the position of the buttocks from shifting forward.

  To return to the standing position of FIG. 1 from the comfortable posture of FIG. 3, the cylinder lock release lever 33 is operated to push the piston rod 12 of the air cylinder 11 to the state of FIG. As a result, all the members can move in the reverse direction to the posture change from FIG. 1 to FIG. 3 and can be returned to the standing state of FIG.

  In the above embodiment, the air cylinder 11 is used as a buffer mechanism for controlling the tilting speed when the backrest is tilted. However, the present invention is not limited to this, and other buffer mechanisms such as a hydraulic cylinder, a spring cylinder, and a screw cylinder are used. Or a member may be used. Further, the link 32 is provided between the pin 9 at the lower end of the lower backrest frame 8a and the base 3, and this link 32 is a link that uniquely determines the angle between the seat portion 6 and the backrest 7.

DESCRIPTION OF SYMBOLS 1 Base 2 Support pillar 3 Base 4 Seat mounting plate 5 Axis support plate 5b Pin 6 Seat 7 Backrest 7a Lower backrest 7b Upper backrest 8a Lower backrest frame 8b Upper backrest frame 9 Pin 10 Pin 11 Air cylinder 12 piston rod 13 rod mounting plate 14 pin 15 pin 16 mounting plate 17 forward hanging lifting rod 18 pin 19 forward hanging mounting plate 20 forward hanging 21 link 21a protruding piece 21b protruding piece 22 rotating rod 23 rotating rod 24 rotating link 25 Rotating rod 26 Link plate 27 Upper back mounting plate 28 Connection plate insertion portion 28a Connection plate insertion hole 28b Window 29 Stopper 29a Lock piece 30 Screw 31 Spring 32 Link 33 Cylinder lock release mechanism 34 Pin 35 Connection rod 36 Lock release unit 37 Armrest 38 Step lever for lifting the seat 39 holes

Claims (3)

A reclining hairdressing and beauty chair with a seat, front sag and backrest,
Dividing the back into two parts, a lower back and an upper back,
The lower back frame, to which the lower back frame is attached, is supported so as to be pivotable in the front-rear direction around the pivot point at the desired position near the lower side, and the upper end portion of the lower back frame is mounted on the back side of the lower back frame. And a four-bar parallel link mechanism with one side between the pivot points,
When the lower backrest frame is tilted backward about the rotation fulcrum, the upper node of the four-bar parallel link mechanism is rotated upward,
A hairdressing and beauty chair characterized in that an upper backrest mounting plate is fixed to a node that pivots upward, and an upper backrest is mounted on the pivoting upper backrest mounting plate. The barber / beauty chair according to claim 1,
The seat portion is supported so as to be swingable in the front-rear direction at a substantially central position in the front-rear direction, and a front suspension is rotatably connected to a tip of the swingable seat portion, and the front suspension and the lower back are connected to each other. A rod for raising and lowering the front is connected between the lower end of the drowning frame,
When the lower backrest frame is tilted backward, the forward / lowering rod moves forward to push the forward suspension upward, and the tilted lower backrest frame moves the seat portion backward with the swinging fulcrum as a center. A hairdressing and beauty chair characterized by being pushed down and tilted. In the barber / beauty chair according to claim 1 or 2,
A barber / beauty chair characterized in that a position adjustment mechanism capable of adjusting the vertical position of the upper backrest is provided between the upper backrest mounting plate and the upper backrest.

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