KR200233921Y1 - Shampoo Chair - Google Patents

Abstract

The object of the present invention is to provide a shampoo chair that can be easily used for young children or the elderly at home.

The constitution of the present invention is a chair having a seat and a backrest, the rotation member being coupled to the backrest or more; And a neck support means formed of a neck support rotatably supported by the pivot member.

Accordingly, the present invention can be conveniently used for young children or the elderly in ordinary homes, etc., and can minimize the volume, thus showing a convenient effect for storage.

Description

Shampoo Chair {Shampoo Chair}

The present invention relates to a chair, and more particularly, to a chair for shampoo used to wind the other person's hair to wash the hair in a general home or the like.

Typically, after a haircut or haircut in a barber shop or beauty salon, the hair is washed, and when the user receives shampoo service without directly sensing the hair, they sit in a chair in front of the sink and wash the hair.

Thus, an example of a conventional shampoo chair for beauty / beauty salon and a wash basin used to wind the hair is shown in the accompanying drawings.

The shampoo chair 100 illustrated in FIG. 14 shows an extremely general example having the simplest form and structure, so that the upper body can be more easily approached to the sink 200 while maintaining a comfortable posture while sitting on the chair 100. The backrest 110 is only made of a structure that can be inclined or inclined backward.

In addition, the front part of the sink 200 facing the backrest 110 portion of the chair 100 is the neck rest portion 210 for seating the back of the neck of the person who is sitting on the chair 100 to wind the head is concavely curved It has a formed structure.

By the way, in addition to the shampoo chairs as described above, most of the conventional shampoo chairs not only have a complicated internal device but also have a very large size, and thus there is a problem in that they cannot be easily used for home use other than a business such as a tooth / beauty salon.

Particularly, in general households, it is common to use a normal chair or to cover the head of a child with a stool, rather than having a separate shampoo chair in consideration of cost. It is common for both hair and hair washers to experience significant discomfort.

The present invention has been made to solve the above problems, it is an object of the present invention to provide a shampoo chair that can be easily used for young children or the elderly in the home.

1 is a perspective view showing a chair for shampoo according to an embodiment of the present invention,

Figure 2 is a partial cross-sectional perspective view of the back back side of the chair for shampoo according to an embodiment of the present invention,

Figure 3 is an exploded perspective view of the rotational portion of the support leg in the present invention,

Figure 4 is a side cross-sectional view of the neck rest area of the chair for shampoo according to an embodiment of the present invention,

Figure 5 is a side cross-sectional view illustrating the inclination angle by the neck support means of the shampoo chair according to an embodiment of the present invention,

Figure 6 is a side cross-sectional view of the neck support portion to which another embodiment of the rotation member according to the present invention is applied,

Figure 7 is a side cross-sectional view of the neck support portion to which another embodiment of the rotation member according to the present invention is applied,

8 is a partial cross-sectional perspective view showing another embodiment of the rotation member and the rotation support member according to the present invention,

Figure 9 is a side cross-sectional view of the neck support portion to which another embodiment of the rotation member according to the present invention is applied,

10 is an exploded perspective view showing a specific example of the pivot support of the present invention,

11 is a cross-sectional view showing a coupling state of the pivot support and the pivot member illustrated in FIG.

12 is a partial cross-sectional side view of a chair for shampoo according to an embodiment of the present invention,

Figure 13 is a perspective view showing a state of the shampoo chair according to an embodiment of the present invention from the front lower side,

Figure 14 is a perspective view of a conventional shampoo chair and sink.

<Explanation of symbols for the main parts of the drawings>

10 sheet 20 backrest

21: back cover 23: pinion member

24: Auxiliary seat seating groove 30: Neck support means

31: Neck rest 31a, 31'a: Cushion part

31b, 31'b: Head restraint part 31c: First pivot support part

32,32 ', 32' ', 32' '': rotating member 32a, 32'a: first ball

32b, 32''a: 2nd ball 32c: protrusion

32 '' 'a: First body 32' '' b: Second body

32 '' 'c: Rotating groove 33,33': Rotating support member

33a, 33'a: second rotation support portion 33b: rack portion

33c: stopping jaw 33'b: rotation stopping means

40, 40 ': armrest 50: backrest inclination adjustment means

60: support leg 70: auxiliary sheet

80: leg

Shampoo chair according to the present invention for achieving the above object, the chair having a seat and a backrest, the rotating member coupled to the backrest or more; And a neck support means (頸部 支持 手段) consisting of; a neck support which is rotatably supported by the pivot member.

Here, the rotating member, the first rotating body coupled to the neck support; A second pivot coupled to the backrest; Rotating groove for receiving and supporting the first rotating body and the second rotating body; may be made.

In particular, the first rotating body and the second rotating body may be formed of a first ball and a second ball, respectively.

In addition, the rotatable groove may include a receptor for receiving the first ball or the second ball; Bangtaling ring to prevent the falling of the first ball or the second ball in the receptor; A friction material in friction contact with the surface of the first ball or the second ball; It may include; a fixing cap for maintaining the debinding ring and friction material and the first ball or the second ball in the receptor.

The present invention may also be formed with a drain groove in the neck rest.

The present invention also, the neck support, the first pivot support portion is inserted and supported by the pivot member; An elastic cushion part surrounding the first pivotal support part; It may be made of; a head-mounting portion placed on the cushion portion.

In the present invention, the rotating member may be made of only a spherical first ball.

In particular, a spherical second ball may be further provided below the first ball of the pivot member, and a pivot support member including a second pivot support portion for receiving and supporting the second ball may be further provided.

In addition, the first rotation support portion or the second rotation support portion, the container for receiving the first ball or the second ball; Bangtaling ring to prevent the falling of the first ball or the second ball in the receptor; A friction material in friction contact with the surface of the first ball or the second ball; It may include; a fixing cap for maintaining the debinding ring and friction material and the first ball or the second ball in the receptor.

In addition, a protrusion may be formed between the first ball and the second ball of the pivot member to limit the range of rotation of the first ball and the second ball.

In addition, an uneven portion is formed in the outer circumferential surface of the second ball in the rotational direction, and the pivot support member may be provided with a rotation blocking means that is inserted into the uneven portion to prevent rotation of the second ball.

In addition, the pivot support member is formed with a rack portion to enter and exit the backrest, the backrest supports the load of the pivot support member, the pivot member and the neck rest, but the rack portion and when the rack enters the backrest by external force It may be provided with a pinion member that is engaged and rotated to support the rotation support member.

The present invention may also be provided with a backrest inclination angle adjusting means for adjusting the inclination angle of the backrest.

Here, a support leg may be provided at the rear portion of the backrest to support the load applied to the backrest while being rotatable according to the inclination angle of the backrest.

In accordance with the present invention, the back seat may be equipped with an auxiliary sheet in an upward position than the height of the seat.

Here, the auxiliary sheet may be rotatably mounted to the backrest via a hinge member, and the backsheet may be provided with a seating portion to seat the auxiliary sheet.

The present invention may also be provided with a leg that can be folded and unfolded into the bottom portion of the sheet.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail as follows.

1 is a perspective view showing a chair for a shampoo according to an embodiment of the present invention, as shown, having a structure having a seat 10 and a backrest 20, in particular the neck support means in the backrest 20 30 is provided.

The neck support means 30 is placed on the upper side of the front of the sink 90 in a state in which the backrest 20 is close to the sink 90, when the person who wants to close the head is seated on the chair, the back of the neck is seated You can do it.

The structure of the neck support means 30, as shown in more detail in Figure 2, the neck support 31, the rotation member 32 and the rotation support member 33.

Here, the neck rest 31 has the front portion wraps around the neck of the person to wash the hair, the upper surface portion is inclined slightly toward the rear, as can be seen from Figure 4, such as urethane foam or synthetic rubber or sponge Cushion portion 31a made of an elastic material, a head restraint portion 31b placed on the cushion portion 31a, which is made of a rigid material such as plastic, which does not get wet or rusted with water, and the bottom surface of the cushion portion 31a. And a first pivotal support portion 31c formed in the portion and surrounded by the cushion portion 31a.

A plurality of drainage grooves 31ba are formed from the back of the neck rest 31, in particular, from the rear of the upper surface portion of the head restraint portion 31b to the rear portion, and these drainage grooves 31ba are formed when the head is wound, as will be described later. The water soaked in the hair is to be discharged to the sink 90 without flowing to other parts of the body.

On the other hand, the rotating member 32 is rotatable on the spherical first ball 32a jointly rotatably coupled to the first pivotal support portion 31c of the neck support 31 and the pivotal support member 33 side. By being made of a spherical second ball (32b) jointly, it is to form a ball joint commonly referred to.

In addition, the pivot support member 33 is composed of a second pivot support portion 33a for receiving the second ball 32b of the pivot member 32, and a rack portion 33b having a plurality of teeth formed in the horizontal direction. The rack portion 33b is accommodated in an insertion groove 20a formed vertically long in the rear portion of the backrest 20 when the backrest cover 21 of the backrest 20 is opened, and is provided in the rear portion of the backrest 20. It engages with the pinion member 23 rotatably arranged in a fixed position via the fixing member 22.

In particular, the pinion member 23 and the rack portion 33b so as not to rotate by the load of the neck support means 30, that is, the neck support 31, the rotation member 32 and the rotation support member 33. While supporting the weight of the neck support means 30 while being engaged, it is made of a material having a weight that can be engaged with the rack portion 33b only by external force pushing or pulling.

In addition, at the lower end of the rack portion 33b, a stopper 33c is formed to prevent the pinion member 23 from being separated from each other.

On the other hand, as shown in Figure 6, the neck support means of the chair for shampoo according to the present invention, instead of excluding the rotation support member 33, only one ball, that is, the first ball (32 'a) By having the rotating member 32 'directly coupled to the backrest 20, the neck support 31 and the rotating member 32' capable of rotating it can be made.

On the other hand, the inclination angle of the rotating member 32 and the neck support 31 through it is preferable to form an optimal angle for the user to use without inconvenience, with reference to FIG. .

In the drawing, the right side is the front of the neck rest 31, which is the direction in which the head of the person to wash the head is seated. The neck rest 31 'is positioned.

At this time, the line connecting the front and rear directions of the neck rest 31 'is inclined downward from the horizontal line OH starting from the first ball 32a of the pivot member 32.

On the other hand, when the head rests on the neck rest 31 'and is tilted backwards, the neck rest 31 is positioned as shown in the solid line in the drawing, and the line connecting the front and rear directions of the neck rest 31 is The inclined state is maintained upward from the horizontal line OH.

As such, the rotation angles of the neck rests 31 'and 31 formed on the first ball 32a of the pivoting member 32 become an angle indicated by' α 'in the drawing, and the angle of the first ball 32a By adjusting the depth of the rotating groove 31a of the spherical surface and the neck support 31 at the time of manufacture, it can be set to the appropriate range which a user can feel optimal comfort.

In addition, the inclination angles of the pivot members 32 and 32 'formed on the second pivot support part 33a are represented by a range of an angle indicated by' β 'in the drawing, which causes the neck rest 31 to move back and forth. When interlocked, it is possible to adjust the distance between the sink (not shown) and the neck support (31).

At this time, since the first ball 32a and the second ball 32b are coupled to the first pivot support 31c and the second pivot support 33a while maintaining strong friction, respectively, only the head weight of the chair user is used. Rotation does not occur, and can only be rotated by strong external forces.

On the other hand, as shown in Figure 7, by forming a projection 32c between the first ball 32a and the second ball 32b of the rotating member 32, the first ball (32a) and the second ball ( The range of rotation angles in 32b) may be limited.

Alternatively, as shown in FIG. 8, on the outer circumferential surface of the second ball 32 ″ a of the pivot member 32 ″ mounted on the second pivot support 33 ′ a of the pivot support member 33 ′. Rotating support member 33 'is provided with rotation stopping means 33'b which forms an uneven portion such as a tooth along the rotational direction, and acts on the uneven portion to prevent rotation of the second ball 32''a. As a result, the angle of rotation of the second ball 32 ″ a may be adjusted.

In particular, as a specific example of the rotation stopping means 33'b, the fixed end 33'ba which is inserted into the groove of the uneven portion to prevent the rotation of the second ball 32''a, and the fixed end Adjusting end 33'bb for the operation of bringing the end 33'ba close to or away from the uneven portion, and the shaft 33 connecting the fixed end 33'ba and the adjusting end 33'bb. and 'bc).

On the other hand, Figure 9 shows another embodiment of the rotating member of the present invention, wherein the rotating member 32 '' ', the first rotating body 32' '' a coupled to the neck support 31 ' ), A second pivot 32 '' 'b coupled to the backrest 20, and the first pivot 32' '' a and the second pivot 32 '' 'b. And a rotating groove 32 '' 'c for supporting.

In particular, the first rotating body 32 '' 'a and the second rotating body 32' '' b are respectively inserted into the upper groove and the lower groove of the rotating groove 32 '' 'c. It can be embodied as a second ball and any other rotating body having a rotatable structure can be used.

In addition to the pivoting groove 32 '' 'c, the first pivotal support 31c and the second pivotal support 33a, 33'a described above are provided with the first balls 32a, 32'a, 32'. The structure for accommodating &quot; a) or the second balls 32b, 32 &quot; a, 32 '&quot; b can be applied as shown in Figs.

That is, the rotation support part 133, such as the rotation groove 32 '' 'c and the first and second rotation support parts 31c, 33a, 33'a, accommodates the ball 132a of the rotation member 132. 133a, a desorption ring 133b for preventing the ball 132a from falling off in the container 133a, a friction material 133c in frictional contact with the surface of the ball 132a, and the desorption ring 133b. And a fixing cap 133d for keeping the friction material 133c in engagement with the ball 132a in the receptor 133a, and closing the opening of the receptor 133a in a state where they are accommodated in the receptor 133a. It may be made including a receptor cap (133e) to.

Particularly, the anti-detachment ring 133b is formed in a ring shape in which a portion of the anti-detachment ring 133b is elastically fitted to the ball 132a, and the friction material 133c rotates the ball 132a. By providing a strong friction when the ball 132a may be made of an elastic material such as rubber material to prevent the slip easily.

In addition, the fixing cap 33d is a ball-receptor 133a by screw-defecting the container 133a in a state in which the desorption ring 133b is fitted to the ball 132a and the friction material 133c is raised. It can be prevented from falling out.

Referring back to FIG. 1, the chair according to the embodiment of the present invention may be provided with armrests 40, 40 ′ on both sides of the seat 10 for the convenience of the head curler. Side portion is equipped with a backrest inclination angle adjusting means 50 that can adjust the angle of the backrest 20.

That is, the backrest inclination adjustment means 50 is located at one end of the shaft rod rotatably mounted to both armrests 40 and 40 'through the lower inside of the backrest 20, as shown in FIG. As described above, a ratchet wheel 52 is mounted to one end of the shaft bar 51 at one armrest 40 side, and a lever provided with a ratchet 53 for intermittent rotation of the ratchet wheel 52 ( 54) are mounted together.

The inclination angle of the backrest 20 can be adjusted by the backrest inclination angle adjusting means 50, as well as the backrest 20 can be folded toward the upper side of the seat 10. Such backrest inclination angle adjustment means 50 ) Is a conventional ratchet means is used, so a more detailed description will be omitted.

On the other hand, when the head of the infant is wound without using a wash basin in a normal home, while tilting the backrest 20 at a large angle toward the rear to allow the child to lie down in a comfortable posture while balancing the chair Support leg 60 that can be fixed may be placed on the rear side of the backrest 20.

The structure of the support leg 60, as shown in more detail in Figure 2, a roller-shaped rotating part 62 which is rotatably mounted on the inner surface of the backrest 20 by means of a fixing member 61; , A lower cylindrical upper support leg 63 extending from the outer circumferential surface of the pivoting part 62 and a lower member coupled to the upper support leg 63 by means of a fixing member 64 such as a screw. It consists of a support leg 65.

In particular, as shown in FIG. 3, a plurality of grooves 62 are radially formed in one side surface of the rotating part 62, and the fixing member 61 facing the same when the rotating part 62 is rotated. The hole 61a which can communicate with the groove 62 of the rotation part 62 and the groove 61a of the rotation part 62 while penetrating through the hole 61a are rotated of the rotation part 62. By providing the pin 61b which can prevent the above, it is possible to prevent the support leg 60 from slipping on the slippery surface such as the bathroom floor.

In addition, an anti-slip groove 65a may be formed in the bottom portion of the lower support leg 65 to prevent sliding by increasing friction with the bottom.

In addition, the backrest 20 or the backrest cover 21 may be provided with a charging groove (21a) so that the support leg 60 can be inserted and stored.

On the other hand, for young children, especially small children 1 to 4 years of age, as shown in Figure 1, the auxiliary sheet 70 may be attached to the front of the backrest 20, this auxiliary sheet ( 70 is provided with the hinge member 71 on one side in contact with the backrest 20 so that it can be folded and retracted toward the backrest 20, and in particular, the hinge member 71 supports the backrest when the auxiliary sheet 70 is opened. The limited rotation angle is used so that it is fixed at right angles to (20).

In addition, by forming the auxiliary sheet seating groove 24 for seating the auxiliary sheet 70 on the front portion of the backrest 20, the protrusion of the auxiliary sheet 70 when the auxiliary sheet 70 is not in use It is preferable to be able to prevent the inconvenience caused, in particular, the edge of the seating groove 24 may be provided with a locking projection (20b) in order to allow the auxiliary sheet 70 to be stably seated.

In addition, it is preferable to form a handle groove 70a on one side of the auxiliary sheet 70 so that it can be easily taken out in a state seated in the seating groove 24.

On the other hand, the bottom of the seat 10 can be provided with a leg 80 that can support the weight applied to the chair, like a normal chair, the leg 80 is folded to the side of the bottom of the seat 10 to expand It is made of a structure that can be.

That is, as shown in Figure 13, the bottom portion 10a of the sheet 10 is recessed inwardly compared to the outer border 10b, both ends of the leg 80 in contact with the outer border (10b) By being rotatably coupled by the hinge rod 81, the leg 80 can be folded on the bottom portion 10a of the seat 10.

At this time, the lower end portion 10a of the seat 10 may be provided with a tangerine 10d that the leg 80 is elastically inserted and can be fixedly supported.

In addition, in order to prevent the leg 80 from being folded arbitrarily in a state where the leg 80 is unfolded, a fixing piece capable of fixing the pivoting portion of the leg 80 to the bottom portion 10a of the seat 10. (11) is provided, and the receiving groove (10c) for accommodating the fixing piece (11) by interference fit is formed in the bottom surface portion (10a) of the sheet (10).

The configuration of the backrest angle adjustment means 50, the support leg 60, the auxiliary seat 70, and the leg 80 mentioned above is not limited to the means shown in the present embodiment, but the object to be achieved in the present invention. It is possible to implement in various other embodiments to comply with.

Hereinafter, the operation relationship of the chair for shampoo according to the present invention from the embodiment of the present invention according to the above-described configuration is as follows.

First, the legs 80 are unfolded from the bottom portion 10a of the seat 10 and fixed with the fixing piece 11, and then a person with a hair curler is seated in a state in which the chair is placed close to the sink 90. 10) sit down and lean on the backrest (20).

At this time, the person to wind the head withdraw the rotation support member 33 of the neck support means 30 from the backrest 20 to seat the neck and the head of the person to the head to the neck support 31.

In addition, by adjusting the angle of inclination of the backrest 20 with the lever 54 of the backrest inclination angle adjusting means 50 mounted on the armrest 40 side so that the distance to the sink 90 is the most appropriate state, do not use the sink If not, back to the back (20) to extend the support legs (60) to balance the chair.

If the distance between the head of the person to wash the hair and the sink 90 is inappropriate, the second ball 32b provided at the lower end of the pivot member 32 of the neck support means 30 is rotated by the pivot support member 33. It rotates on the 2nd rotation support part 33a so that an appropriate space may be made.

In addition, the headrest 31 is the first ball of the rotating member 32 so that the most comfortable posture can be maintained to the person who winds the hair while washing the hair, and the washing water can flow down to the sink 90. Rotate on (32a) to achieve the most appropriate tilt angle.

Thus, the angle of inclination of the backrest 20 and the neck support means 30 can be easily adjusted so that both the person who winds the hair and the person who winds the hair can shampoo in a convenient posture.

In addition, the wash water soaked in the head drains well toward the wash basin 90 through the drain groove 31ba formed in the neck rest 31 so that other body parts may be wet with water. There will be no.

If the head of the infants and toddlers who are very short, about 1-4 years old, is wound, the auxiliary sheet 70 provided in the backrest 20 is unfolded from the auxiliary sheet seating groove 24 and sits thereon. By doing so, there can be no problem in use according to the physical condition.

On the other hand, when storing after finishing use for the chair for shampoo of the present invention, first, the rotating member 32 is rotated to be upright on the rotating support member 33 of the backrest together with the rotating support member 33. Push in by applying an appropriate external force to the insertion groove (20a) (at this time, the rack portion 33b of the rotation support member 33 is engaged with the pinion member 23 inside the backrest 20 can be embedded in a modest manner. Will be).

Then, the fixing member 64 is released to insert the lower supporting leg 65 of the supporting leg 60 into the upper supporting leg 63.

Further, the auxiliary seat 70 is rotated by the auxiliary seat seating groove 24 and folded, so that the ratchet wheel 52 freely rotates from the ratchet 53 by using the lever 54 of the backrest inclination angle adjusting means 50. The backrest 20 is folded toward the upper surface of the seat 10.

Finally, the fixing piece 11 of the seat bottom portion 10a is inserted into the receiving groove 10c so that the legs 80 on both sides are freely rotated, and the legs 80 are then seated on the sheet bottom portion 10a. By folding in close contact, it can be stored in a minimal volume.

On the other hand, the shampoo chair of the present invention is intended to be used mainly in infants, senior citizens, the elderly, patients, and the handicapped people in general homes and medical institutions, but it is natural that it can also be used in businesses such as beauty salons.

Shampoo chair according to the present invention as described above, can be used easily for young children or the elderly in a general home, etc., and can minimize the volume, showing a convenient effect for storage.

Claims (17)

A chair having a seat and a backrest, A rotating member coupled to the backrest or more; Shampoo chair characterized in that it comprises a neck support means consisting of; neck support that is rotatably supported by the rotation member. The method of claim 1, The rotating member may include a first rotating body coupled to the neck rest; A second pivot coupled to the backrest; The swivel chair, characterized in that consisting of; a rotating groove for receiving and supporting the first rotating body and the second rotating body. The method of claim 2, The first rotating body and the second rotating body is a shampoo chair, characterized in that consisting of the first ball and the second ball, respectively. The method of claim 3, The rotatable groove may include a receptor accommodating the first ball or the second ball; Bangtaling ring to prevent the falling of the first ball or the second ball in the receptor; A friction material in friction contact with the surface of the first ball or the second ball; Shampoo chair comprising: a fixing cap to maintain the debinding ring and friction material and the first ball or the second ball in the receptor. The method of claim 1, Shampoo chair, characterized in that the drain groove is formed in the neck rest. The method of claim 1, The neck rest, the first pivot support portion is inserted and supported by the pivot member; An elastic cushion part surrounding the first pivotal support part; Shampoo chair, characterized in that consisting of; The method according to claim 1 or 6, The rotating member is a chair for shampoo, characterized in that consisting of only the first spherical ball. The method of claim 7, wherein A spherical second ball is further provided below the first ball of the pivot member, Shampoo chair, characterized in that further provided with a rotation support member formed with a second rotation support portion for receiving and supporting the second ball. The method of claim 8, The first rotation support portion or the second rotation support portion, A receptor for receiving the first ball or the second ball; Bangtaling ring to prevent the falling of the first ball or the second ball in the receptor; A friction material in friction contact with the surface of the first ball or the second ball; Shampoo chair comprising: a fixing cap to maintain the debinding ring and friction material and the first ball or the second ball in the receptor. The method of claim 8, Shampoo chair characterized in that the protrusion is formed between the first ball and the second ball of the rotating member to limit the range of rotation of the first ball and the second ball. The method of claim 8, Concave-convex portion is formed along the rotational direction on the outer circumferential surface of the second ball, The rotation support member is shampoo chair, characterized in that the rotation stopping means is inserted into the concave-convex portion to prevent the rotation of the second ball. The method of claim 8, The pivot support member is provided with a rack portion to enter and exit the backrest, The backrest bears the load of the pivot support member, the pivot member and the neck support, and is provided with a pinion member that supports the pivot support member while rotating by engaging with the rack portion when the rack portion enters the backrest by external force. Shampoo chair. The method of claim 1, Shampoo chair, characterized in that the backrest inclination angle adjusting means for adjusting the inclination angle of the backrest is provided. The method of claim 13, The rear portion of the backrest, the shampoo chair, characterized in that the support leg which is capable of supporting the load applied to the backrest while being rotatable according to the inclination angle of the backrest. The method of claim 1, The backrest, the chair for shampoo, characterized in that the auxiliary sheet is mounted at a position higher than the height of the seat. The method of claim 15, The auxiliary sheet is rotatably mounted to the backrest via a hinge member, The backrest is a chair for shampoo, characterized in that the auxiliary seat seating portion is formed is seated on the auxiliary sheet. The method of claim 1, The seat for shampoo, characterized in that the seat is provided with a leg that can be folded to the bottom of the seat.