JP2905789B2 - The steps of the beauty and beauty chair - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to steps of a barber / beauty chair.

[Prior Art] The steps of the barber / beauty chair according to the prior art are integrally connected to the seat and move up and down integrally with the seat.

[Problems to be Solved by the Invention] Since the steps of the prior art largely project forward from the seat and ascend and descend integrally with the seat, improvement of the following technical problem has been demanded.

1) When the practitioner turns the chair to make it easy for the customer to get up and down from the chair, it is necessary to keep the periphery of the chair clear because the steps are greatly extended forward from the seat. (A chair is used as a general term including a seat and a seat elevating device. The same applies hereinafter.) 2) Since the steps are connected to the seat, the relative height between the seat and the steps is constant, so that the chair fits the position of the human body. It was difficult to set the optimum relative height, which forced the customer to take an unreasonable posture.

3) It was difficult for the practitioner to approach from the front of the customer because the steps were protruding forward.

[Means for Solving the Problems] A chair composed of a seat and a sub-cylinder for elevating the seat, etc., and a master cylinder and a piston rod of the master cylinder, which are opposed to the chair via a slide cover and the like, are integrally formed. Connecting and ascending and descending steps, communicating the upper chamber of the master cylinder and the sub-cylinder with a pipe,
The master cylinder is set up so that an arbitrary point on the sheet is parallel to a line connecting the coordinates at the lowest position and the coordinates at the highest position.

[Operation] If configured as described above, 1) Even if the chair is turned, there is no overhang from the seat, so that interference with the surroundings is eliminated.

2) When the practitioner needs an approach from the front of the customer,
The customer's feet can be separated from the steps, the steps can be folded, and the front of the chair can be cleared.

3) In order to make the height of the relation between the step and the sheet the optimum size according to the position of the customer, the relative height may be changed by raising and lowering only the sheet while leaving the step as it is. After setting the optimal relational dimension between the step and the sheet, the practitioner can move the step and the sheet up and down by linking the step and the sheet to a height that is easy to perform.

4) When the link is driven by a ram cylinder as a device for raising and lowering the sheet, the relative distance between the sheet and the step in the horizontal direction changes, but the relative distance between the sheet and the step because the master cylinder is inclined. Can be set to a small value that does not hinder practical use as follows.

A = B ± CA A = Relative distance between the sheet and the step according to the present invention.

B = optimal relative distance between sheet and step.

 C = length that changes in the horizontal direction.

L = link length θ = link elevation angle [Embodiment] An embodiment of the present invention will be described with reference to the drawings. , A sub-cylinder 4 for raising and lowering the sheet 3.

The master cylinder 2 is composed of a cylinder body 5, a piston 6, a piston rod 7, a cylinder cover 8, and the like, and is a type of a differential cylinder in which the piston rod 7 penetrates only one side.

The sub-cylinder 4 for raising and lowering the seat 3 is a trunnion-type ram cylinder composed of a cylinder body 9, a ram 10, a cylinder cover 11, and the like.
Thus, the tip of the bracket 17 and the tip of the unevenness 10 are connected to the main link 18 by a pin 13 so as to be freely bent. The bracket 17 and the base end of the cylinder body 5 are fixed upright on the base 19 at a required distance.

At the tip of the piston rod 7, a flange 20 is fitted, and a table 21, a slide cover 22,
The step 1 is moved up and down by the arm 23. It is attached to the arm 23 side by the pin 14 so that it can be bent, and the open state is the base.
Folding parallel to 19 makes it almost parallel to arm 23.

The fixed flange 24 is moved up and down while maintaining a parallel state by the main link 18 and a sub link (not shown). Further, since the protrusion of the rotating ring 25 rotatably provided on the fixed flange 24 is fitted into the flange 26 provided integrally with the seat 3, the seat 3 can be turned. Also, the pin 16 connecting the main link 18 and the fixed flange 24 moves from the point A to the point B around the pin 15 connecting the main link 18 and the bracket 17 by the expansion and contraction of the sub cylinder 4. Then, the sheet 3 is raised from the lowest position indicated by the solid line to the highest position indicated by the alternate long and short dash line.

The cylinder body 5 of the master cylinder 2 is
Is attached to the base 19 at an angle parallel to the line connecting the moving points A and B.

The operation in the ascending direction will be described in more detail with reference to FIG. 2. Reference numeral 27 denotes a tank, 28 denotes a motor pump, 29, 30, 31, and 32 denote switching valves, and 33 and 34 denote check valves. When the valve is driven to open the switching valve 29, the pressure oil is sent to the lower chamber 5a of the piston 6 through the pipe 38, and the oil in the upper chamber 5b of the piston 6 is pushed out of the master cylinder 2 and passes through the pipes 35 and 36. To the sub cylinder 4.

A vertical hole 10a and a horizontal hole 10b are provided on the end face of the ram 10 of the sub cylinder 4.
When the ram 10 rises and the lateral hole 10b passes through the seal ring 40, the oil supplied into the sub cylinder 4 is returned to the tank 27 through the pipe 37, so that the ram 10 is It does not rise above the state.

That is, the sub cylinder 4 extends from the shortest state and
The lifting mechanism of the chair is adjusted so that the maximum stroke is reached until the sheet passes through the seal ring 40, the shortest state is the lowest position of the seat 3, and the extended state is the highest position of the seat 3.

On the other hand, the master cylinder 2 has a maximum stroke from the lowest position of the piston 6 to the state where the piston 6 comes into contact with the inner end face of the cylinder cover 8, and the amount of oil discharged from the master cylinder 2 during the movement of the piston 6, ie, the upper chamber 5a. The volume is set to be the same as the maximum stroke volume of the ram 10 of the sub cylinder 4.

When an arbitrary point on the piston rod 7 moves from the lowest position to the highest position, the amount of change of the arbitrary point is determined by the X-axis from the maximum moving point A to B of the pin 16 on the chair side in FIG. In the Y-axis direction,
It is the same as each movement amount. Further, it is needless to say that an arbitrary point on the sheet 3 moves up and down by the same amount in parallel with the moving points A and B described above.

Strictly speaking, since the sheet 3 moves in an arc and the piston 7 moves in a straight line, the change amounts of the coordinates of the sheet 3 in the X-axis direction and the Y-axis direction in the step 1 during the movement do not completely match. When the same amount of change is calculated, the amount of change in the relative distance of any point between the piston 7 and the seat 3 is so small as to be negligible, so that the step 1 operating integrally with the piston 6 and the seat 3 are as if Exercise like this.

When lowering the seat 3 and the step 1, the switching valve 31 is used.
Is opened, the seat 3 and the step 1 descend synchronously.

When the motor pump 28 is operated and the switching valve 30 is opened, the sub-cylinder 4 can be independently lubricated. When the switching valve 32 is opened, the oil is drained independently, so that the seat 3 can be raised and lowered independently.
This means that the relative height between the seat 3 and the step 1 can be changed, so that the seat 3 and the step 1 can be set to the optimum height according to the position of the customer. In the above, the elevation angle of the main link 18 has been described for a type generally used. However, if the elevation angle of the main link 18 is equally distributed from the horizontal level, the moving points A and B of the pin 16 can be obtained. Is vertical, so master cylinder 2
It is also possible to vertically elevate the step 1 from the base 19 and move the step 1 vertically.

Also, the sub-cylinder 4 is set upright on the base 19,
The base is fixed to the base 19, and the seat 3 is directly attached to the top of the ram 10 via the flange 26 via the flange 26. The so-called direct-acting chair elevating device also vertically elevates the master cylinder 2 described above. Needless to say, step 1 can be attached and linked in the same manner.

Further, the step 1 is moved up and down by an electric motor in place of the lifting mechanism of the step 1 by the hydraulic pressure of the master cylinder 2, and only the chair side is raised and lowered by the hydraulic pressure of the motor pump 28. It is also possible to provide a position detecting device in the section and raise and lower the sheet 3 while maintaining the optimum relative height of the step 1 while detecting and controlling both heights at the same time.

Reference numeral 41 denotes a pump unit, and reference numeral 42 denotes a mirror provided integrally with the table 21.

[Effects] The effects of the present invention are summarized as follows.

1) Since the steps are separated from the chair seat and swinging out of the seat is eliminated, even if the seat is rotated for ascending or descending to the seat of the customer, interference with surrounding objects is reduced.

2) Since the steps can be further folded, the practitioner can approach from the front of the chair, and the working area of the practitioner is widened.

3) In the above-mentioned apparatus, since the sheet can be moved up and down alone, the relative height between the sheet and the step can be selected to an optimum height according to the position of the customer.

4) The mechanism for separating the step from the sheet and moving the step in conjunction with the sheet to move up and down is operated by a working cylinder type master cylinder, and when the step rises, oil is discharged from the master cylinder. Oil,
The master cylinder is guided to a sub-cylinder that raises and lowers the sheet, and an arbitrary point on the sheet is parallel to the inclination of a line connecting the lowest position and the highest position (a line parallel to the line connecting points A and B in FIG. 1). Is inclined, so that even a sheet elevating / lowering device using a link can be operated in synchronization while maintaining the optimum relative distance between the sheet and the step.

[Brief description of the drawings]

FIG. 1 is a side view of a beauty and beauty chair according to the present invention, and FIG. 2 is a sectional view of a hydraulic mechanism of the chair and a hydraulic pipe system diagram. 1 step 2 master cylinder 3 seat 4 sub cylinder 5 cylinder body 5a
Lower chamber, 5b Upper chamber, 6 Piston, 7 Piston rod, 8 Cylinder cover, 9 Cylinder body, 10
... ram, 11 ... cylinder cover, 12,13,14,15,16 ... pin, 17 ... bracket, 18 ... main link, 19 ... base, 20 ... flange, 21 ... table, 22 ... ... Slide cover, 23 ... Arm, 24 ... Fixed flange, 25 ... Rotating ring, 26 ... Flange, 27 ... Tank, 28 ... Motor pump, 29,30,31,32 ... Switching valve, 33 , 34… check valve, 35, 36, 37, 38, 39… pipe, 40… seal ring, 41… pump unit, 42… mirror

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int.Cl. ⁶ , DB name) A47C 1/08 A47C 1/04 A47C 7/50 A47C 16/02

Claims (1)

(57) [Claims] 1. A chair comprising a seat (3) and a sub cylinder (4) for raising and lowering the seat (3), a master cylinder (2) and a slide cover (22) opposed to the chair.
Step (1) integrally connected to the piston rod (7) of the master cylinder (2) through the like, and moving up and down, the upper chamber (5b) of the master cylinder (2) and the sub-cylinder (4) Are communicated by pipes (35) and (36), and the master cylinder (2) is connected to a line connecting an arbitrary point on the seat (3) with the coordinate at the lowest position and the coordinate at the highest position. The steps of a barber / beauty chair characterized by being erected in parallel.