KR920003656Y1 - A hairdresser 's chair with vertically adjustable seat - Google Patents

Abstract

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Description

This, the hydraulic jack for adjusting the up and down of the beauty chair

1 is a longitudinal cross-sectional view showing a rising operation state of the operation shaft by repeatedly stepping on the hydraulic pedal for adjusting the hydraulic pressure within a certain range of rotation in the present invention.

Figure 2 is a longitudinal cross-sectional view showing the lowering operation by the operation shaft that was raised in the present invention to fully step on the operation pedal.

Figure 3 is a partial excerpt operation state showing the state just before the operation shaft is fully lowered and fully lowered in the present invention.

Figure 4 is a plan view showing a lower body of the present invention.

5 is a partial cross-sectional view taken along line A-A of FIG.

Figure 6 is a partial extraction perspective view showing the operating state of the left, right movement prevention clamps installed on the hydraulic jack of the present invention.

* Explanation of symbols for main parts of the drawings

1: upper body 2: lower body

3: outer cylinder 4: fixed cylinder

5: working cylinder 6: air passage

7: Cylinder mounting part 8: Hydraulic oil flow path

9: operating shaft 10: sheet mounting portion

10 ': coupling groove 11: packing sheet

12: cushion pin 13, 21: fixing pin

14, 19 ', 27, 33: spring washer 15: pressurized packing

16 Ball 17 working oil distributor

18: floating pin 19: working piston

19a: hydraulic oil inlet 20: push pin

20a: extension 22: spring sheet

23, 26: valve body 23 ': hydraulic oil inlet hole

23a: working oil distribution groove 24, 28: spring

25, 29: ball valve 26: working oil inlet

30: compression spring 31: operating rod insertion groove

32: operating rod 34: operating pedal

34 ': bend portion 35: push

36: fixed clamp 37: pressure piece

37 ': Guide home 38: Go Information Ult

The present invention is a hydraulic jack for adjusting the lift and lower of the known chair, it is installed on the upper body of the hydraulic jack is rotated up and down to flow the hydraulic oil inside the hydraulic jack to raise and lower the chair connected to the operation shaft properly. By making the two-stage branching point on the turning radius of the manual operation pedal, the user can feel the two-stage branching point clearly when the user presses the operating pedal, and the braking and height adjustment of the chair to prevent left and right rotation of the chair When the chair starts to descend and approaches the bottom end, the hydraulic fluid flow inside the cylinder is rapidly reduced by reducing the descending speed. To raise or lower the impact to a minimum, the beauty chair lifts and lowers For relates to yuapjaek.

In general, the chair used in the conventional beauty salon is equipped with a hydraulic lifting and lowering device so that the height of the chair can be appropriately adjusted according to the user's preference. Such conventional hydraulic devices are mostly fixed cylinders. Each of the two cylinders as movable cylinders is provided and the chair shaft is connected to the upper end of the piston-type shaft inserted on the fixed cylinder to allow the chair to move up and down by operating the shaft up and down. The upper end of the operation piston to be inserted is installed so that the operation pedal abuts to form the operation piston up and down according to the operation of the operation pedal up and down, while forming a hydraulic oil flow path between the cylinders on both sides and install a valve thereon It was a configuration.

However, the conventional hydraulic device as described above continuously repeats the process of descending only to a certain approximate position without any distinction in the up and down rotation radius of the operation pedal, which is stepped on to appropriately adjust the height of the chair as desired by the user. By intermittently feeding the hydraulic oil on the hydraulic cylinder to the fixed cylinder, the shaft installed on the fixed cylinder is raised, and the operating pedal is lowered completely so that the valve installed in the hydraulic oil passage opens to open the hydraulic oil that has been pressurized on the fixed cylinder. Is introduced into the hydraulic tank through the oil flow channel, and the shaft that has been raised is lowered accordingly. There is no specific limit on the rotational rotation of the pedal during the operation of raising or lowering the shaft according to the downward position of the pedal. Not in state In order to raise the chair, there was a need for careful attention that the operating pedal should be roughly estimated to a certain downward position and repeatedly stepped on, so that if the chair is unintentionally lowered below the proper limit position, the chair will be raised. Contrary to the original purpose, there was a hassle that the chair was lowered, which increased the manual work of stepping on the operating pedal.

In addition, when the operating pedal is lowered completely to lower the chair in an elevated state, a valve installed on the hydraulic oil distribution opens, and the hydraulic fluid pumped on the fixed cylinder is caused by the weight of the person sitting on the chair and the weight of the chair itself. The hydraulic oil flows into the tank and the chair is lowered. At this time, the lowering operation is terminated while the shaft inserted into the cylinder contacts the lower end of the cylinder, and the shaft continues to descend at a constant speed and then fits the lower end of the cylinder. When the impact is lowered and further lowering is inevitably caused to some degree of shock, there is a discomfort that causes discomfort to the person sitting on the chair, as well as the repeated impact on the lowering, so that each component of the hydraulic system itself The discontinuance of the member's absence in a short time, etc. The.

The present invention has been devised in view of such a conventional problem, and by allowing two steps to be formed on the rotation radius of the operation pedal, a person who steps on the operation pedal makes it easy to step on the operation pedal in a state where the user feels the branching point clearly. It is possible to adjust the height and height of the chair so that a separate impact mitigating means is provided at the lower end of the working shaft and the lower side of the cylinder, so that the flow rate of the working oil is rapidly reduced from the point where the operating shaft is almost lowered. Each member of the hydraulic jack is made to reduce the descending speed of the shaft so that the person sitting on the chair can hardly feel the shock when the chair is lowered, so as not to feel the discomfort caused by the shock when the chair is lowered as in the related art. Prevents aging due to impact and extends the life of the device itself. Its purpose is to describe in detail with reference to the accompanying drawings as follows.

That is, as shown in Figures 1 and 2 of the accompanying drawings, the hydraulic jack is configured as a pipe-shaped outer cylinder (3) between the upper body (1) and the lower body (2), the fixed cylinder ( 4) and the movable cylinder 5 are installed and configured, respectively.

The fixed cylinder (4) is installed so that the upper and lower ends are coupled between the upper body (1) and the lower body (2) and at the same time the air flow path (6) of the appropriate interval on the upper side.

The movable cylinder (5) is installed on the cylinder mounting portion (7) of the lower body (2) and at the same time forming a hydraulic fluid flow path (8) so as to communicate with each other between the fixed cylinder (4) and the movable cylinder (5). do.

The piston-type actuating shaft 9 inserted into the fixed cylinder 4 is integrally formed with the sheet installation portion 10, which has a coupling groove 10 'formed at the inner side of the lower portion, and springs at its outer circumference. The washer 14, the pressure packing 15, and the packing sheet 11 are sequentially inserted, but the cushioning pin 12 is fixed together with the packing sheet 11 by maintaining a clearance state in the coupling groove 10 '. To the pin (13).

The lower outer diameter of the cushion pin 12 coupled to the coupling groove 10 'is formed to be smaller than the inner diameter of the hydraulic oil flow passage 8 communicated to the fixed cylinder 4 side during the complete lowering operation of the operating shaft 9. Even when abuts on the lower body 2, a flow path of a predetermined gap is formed between the cushion pin 12 and the hydraulic oil flow path 8.

In addition, the ball 16 is placed on the working flow passage 8 so as to be in contact with the cushion pin 12 during the complete lowering operation of the operating shaft 9, thereby reducing the impact of the operating shaft 9. .

A hydraulic fluid distribution path is formed by forming a separate hydraulic fluid distribution hole 17 above the hydraulic oil distribution path 8 on the side of the fixed cylinder 4 and inserting a flow pin 18 smaller than its inner diameter to form a predetermined gap. A certain amount of hydraulic oil is introduced into the fixed cylinder (4) through (8) to provide a smooth ascending operation of the operating shaft (9).

The working piston 19 inserted into the inside of the movable cylinder 5 has a hydraulic oil inlet 19a at one side and a push pin 20 having an extension 20a at its lower end with a fixing pin 21. Install in combination.

In addition, the compression spring 30 is placed between the upper end of the movable cylinder installation portion 7 of the lower body 2 from the upper end of the operating piston 19 and fixed to the spring washer 19 'to install the operating piston 19 ) Is installed elastically.

On the hydraulic oil flow path 8 of the cylinder mounting portion 7 to which the movable cylinder 5 is coupled, the valve body 23 into which the spring sheet 22 is screwed inward is screwed in.

The ball valve 25 is placed inside the valve body 23 to be elastically installed by the spring 24, and the hydraulic oil inlet 23 'formed at the upper side of the valve body 23 is always installed to close the valve body 23. The upper end portion is formed with a working oil distribution groove 23a of a proper gap.

Meanwhile, as shown in FIG. 5, one side of the lower body 2 is formed to communicate with the lower end of the movable cylinder 5 by forming a separate hydraulic oil inflow path 26, which is a spring washer 27 and a spring. (27) After the ball valve 29 is placed, the valve body 26 'is screwed in and fixed so that the hydraulic oil inflow path 26 is opened and closed.

The operating rod insertion groove 31 is formed on the upper body 1, which is the upper portion of the operating piston 19, and the operating rod 32 is inserted therein, so that the upper end of the operating rod 32 protrudes by a predetermined length. By installing the stop pin 33 fixed to the lower proper portion is installed to limit the movement limit of the operating rod 32 by the stop pin (33).

In addition, the operation pedal 34 having a bent portion 34 'is mounted on the outer abutment of the upper body 1, but the pressing portion 35 is bent on the bent portion 34' of the operating pedal 34. By fixing so that the upper end of the operating rod 32 abuts on the pressing section 35, the operating rod 32 is lowered in accordance with the lowering operation of the operating pedal 34.

On the other hand, the fixed clamp 36 for preventing left and right pivoting on the outer diameter of the operating shaft (9) protruding from the upper body (1) is fixed, but the guide groove (37 ') on one side of the fixed clamp (36) 6 is shown in FIG. 6 by fixing the pressing piece 37 having the high information bolt 38 and installing the pressing section 35 of the operating pedal 34 on the guide groove 37 'on the pressing piece 37. FIG. As described above, when the operation pedal 34 is completely tilted upward, the pressing piece 37 rotates downward, and the high information bolt 38 fixedly coupling the fixed clamp 36 and the pressing piece 37 is the pressing piece ( The fixed clamp 36 is tightened by the pitch distance of the high information 38, which is rotated in the same manner as the rotational distance of 37), and thus the outer circumference of the operating shaft 9 is pressed to move the left and right of the operating shaft 9 The reference numeral 39 designates air circulation holes 40, 41, 42, 43, 44 on the fixed cylinder (4). A packing material for confidentiality.

Looking at the operation and effects of the present invention configured as described in detail as follows.

In other words, the present invention is introduced into the hydraulic jack to maintain the height of about 70% in the inner space of the hydraulic jack and the assembly of the conventional chair, the chair of the beauty chair to the top of the operating shaft (9) to form the assembly of the beauty chair After the customer is sitting down by stepping down the appropriate shape of the operation pedal 34 installed on the upper body (1) in order to properly adjust the height of the chair, on the bent portion (34 ') of the operation pedal (34) While the fixed push bar 35 is lowered, the operating rod 32 abutting on the press bar 35 is lowered by a predetermined distance, and at the same time, the upper end is brought into contact with the lower end of the operating rod 32. The working piston 19 inserted in 5) descends to flow down the hydraulic fluid flowing in the state filled in the operating cylinder 5 tightly.

Therefore, the hydraulic oil is introduced into the valve body 23 through the hydraulic oil inlet hole 23 ′ formed in the center of the valve body 23 on the lower side of the movable cylinder 5, and the spring 24 in the valve body 23. The ball valve 25 is elastically installed by the downward flow to open the hydraulic oil inlet hole 23 ′ and at the same time, it flows along the hydraulic oil flow path 9 and flows into the fixed cylinder 4 and the hydraulic oil flow path 8. The hydraulic fluid flowing into the fixed cylinder (4) side through the predetermined hydraulic pressure on the bottom surface of the cushion pin (12) assembled to allow some shaking on the lower end of the operating shaft (9) in the lowered state to the fixed cylinder (4) And the shaft 9 is pushed up and lifted to flow into the fixed cylinder 4 through a flow path of a predetermined gap formed between the hydraulic oil distribution path 8 and the cushion pin 12 on the fixed cylinder 4 side and continuously operated. The shaft 9 is raised. At this time, the hydraulic oil is also introduced into the hydraulic oil distribution hole 18 provided on one side of the oil flow path 8, and as the hydraulic oil flows in, the flow pin 18 closing the hydraulic oil distribution hole 17 is raised. A certain amount of hydraulic oil flows into the fixed cylinder 4 through the flow path of the appropriate gap to accelerate the ascending operation of the operating shaft 9, and the operating shaft 9 located at the lowermost end of the fixed cylinder 4 As air rises, air that is filled inside the fixed cylinder 4 on the upper side of the pressure packing 15 under the operating shaft 9 is discharged from the air distribution hole 39 on the fixed cylinder 4 and the upper end of the fixed cylinder 4. The operation shaft 9 is smoothly raised while exiting through the air flow passage 6.

In this way, the operation pedal 34 is lowered once to obtain a certain effect of raising the chair, and then, when the force applied to the operation pedal 34 is removed, the cylinder installation portion 7 and the operation piston 19 of the lower body 2 are removed. The operating piston (19) elastically installed by the compression spring (30) interposed between the spring washer (19 ') of the) as the operating pedal 34 is returned to its original position, the return position at this time is the operating rod ( The stop washer 33 fixed on the upper part 32 is caught by the upper body 1, and further lifting of the operating rod 32 is prevented, so that it is always returned to the same position.

In addition, as the working piston 19 descends, the amount of the hydraulic fluid flowing into the fixed cylinder 4 through the hydraulic oil flow path 8 is reduced by the same amount through the hydraulic oil inflow path 26 formed on one side of the lower body 2. While being replenished to the inside of the movable cylinder 5, the state in which the operating oil is always filled on the movable cylinder 5 is maintained.

As such, when the operation pedal 34 is lowered once to raise the operation shaft 9 to some extent, and the chair is not raised to the desired raised position, the operation pedal 34 is repeatedly stepped as described above. At this time, the chair is raised up to the position, and the descending turning radius of the actuating pedal 34 is the actuating piston from the return position where the stop washer 33 on the actuating rod 32 is no longer lifted by the upper body 1. Limited to the position where the push pin 20 fixedly installed on the lower end of 19 is lowered and comes into contact with the upper end of the hydraulic oil distribution hole 23 'in the center of the valve body 23 attached to the lower side of the movable cylinder 5. The limit of the rotation radius is that the user is formed so that the lower end portion 20a of the press plate 20 formed slightly larger is closely matched on the hydraulic oil inlet hole 23 'of the valve body 23. Applying force on the operating pedal 34 In the process of lowering the operating piston 19, the expansion portion 20a of the push pin 20 on the operating piston 19 is fitted on the operating oil distribution hole 23 'of the valve body 20. By being able to feel the resistance clearly, it is possible to easily adjust the height of the chair while stopping the further lowering operation and repeatedly lowering the operation pedal 34 only within a limited turning radius.

On the other hand, as shown in FIG. 2 and FIG. 3, the operation pedal 34 is lowered to lower the operation shaft 9 while the operation shaft 9 inserted on the fixed cylinder 4 is raised to the uppermost level. When stepped down to the lowest end, the operation piston 19 is lowered to the lowest end of the movable cylinder 5 and at the same time, the expansion portion 20a of the push pin 20 fixed to the lower end of the operation piston 19 is the valve body 23. While being inserted into the valve body 23 through the hydraulic oil inlet hole 23 ', the valve 25 is elastically installed in the spring 24 and then lowered to thereby lower the hydraulic oil inlet hole 23'. The fixed cylinder 4 through the oil passage hole 23a at the upper end of the valve body 23 and the flow path having a predetermined gap formed between the inner diameter of the hydraulic oil inflow hole 23 'and the outer diameter of the push pin 20; The hydraulic fluid which is in a full state on the hydraulic oil flow path 8 is formed on one side of the working piston 19. While flowing into the oil inlet 19a, it flows out into the space inside the outer cylinder 3, and the operating oil flow pressure at this time is controlled by the load of the chair itself and the load of the customer sitting on the chair, and the operating shaft 9 at an appropriate speed. Will descend.

As described above, the operation shaft 9 continues to descend while maintaining the proper speed, and the lower end of the cushion pin 12 assembled to allow a certain amount of distribution on the coupling groove 10 'at the bottom of the operation shaft 9 is fixed cylinder ( 4) When the hydraulic oil flow path 8 is inserted into the hydraulic oil flow path 8, the flow path through which the hydraulic fluid can flow is only a predetermined gap formed between the outer diameter of the cushion pin 12 and the inner diameter of the hydraulic oil flow path 8, and thus the flow amount of the hydraulic oil. As the abrupt decrease of the operating shaft (9) the falling speed is also rapidly sensed, the cushion pin 12 at this time is a state that flows irregularly on the lower coupling groove (10 ') of the operating shaft (9) Slowly descending to open and close the flow path irregularly to further lower the falling speed of the shaft (9), the hydraulic fluid distribution hole (17) placed on the hydraulic oil flow path (8) during the ascending operation of the operating shaft (9) ) To the fixed cylinder (4) side The flow pin 18, which has been upwardly flowed upward by the hydraulic pressure generated when the oil is introduced, is pressed back by the hydraulic pressure according to the downward flow of the hydraulic oil and returned to its original position, thereby closing the hydraulic oil distribution hole 17 so as to close the operating shaft 9. It will share the role of slowing down the descent speed.

The descending process of the operation shaft 9 is that the operation shaft 9, which has been lowered at a certain speed, descends slowly while slowly decelerating from immediately before reaching the lowest end of the fixed cylinder 4, thereby ending the lowering of the chair. By making it almost impossible for the person sitting in to feel the end of the lowering of the chair, there is no discomfort caused by the impact when the chair is lowered as in the prior art, as well as to prevent the aging of the component due to the shock at that time to extend the life of hydraulic equipment. do.

On the other hand, when it is desired to prevent the operation shaft 9 inserted into the fixed cylinder 4 from being rotated left and right, the operation pedal 34 is returned to a predetermined position as shown in FIG. The object is achieved by upwardly flowing to the side, and when the operating pedal 34 flows upward from the return position, the pressing piece 35 fixed to the bent portion 34 'of the operating pedal 34 is pressed against the pressing piece 37. While rotating upward along the guide groove 37 ′ of the pressing member 37, the pressing piece 37 is rotated downward by a predetermined radius. Accordingly, the pressing piece 37 is connected to and assembled with the clamping clamp 36 and the pressing piece 37. The high information bolt 38 fixed on the upper surface of the fixed piece 36 is rotated by the same pitch as the rotation radius of the pressing piece 37 so that the fixed clamp 36 is moved by the pitch movement distance at the time of the rotation. The device being tightened to conform to the outer diameter of the shaft 9 By being a fixing clamp 36 that presses the outer diameter of the shaft (9), it becomes easy to prevent the left and right rotation of the shaft 9.

Thus, the hydraulic jack of the present invention is an advantageous and practical design to solve various problems of the conventional hydraulic device and to easily adjust the height and height of the beauty chair.

Claims (1)

Combining the upper body (1) and the lower body (2) by the outer cylinder (3) and provided with a fixed cylinder (4) and a movable cylinder (5) on both sides of the outer cylinder (3), respectively, the fixed cylinder (4) and By operating the operating pedal 34 up and down within a predetermined range by communicating with the movable cylinder 5 to the hydraulic oil passage 8, the operating piston 19 is driven, and accordingly hydraulic pressure is supplied through the hydraulic oil passage 8. It is supplied to the operating shaft 9 of the fixed cylinder 4 to ascend, and when the operating pedal 34 is operated to the lowest position, the hydraulic fluid is returned to the movable cylinder 5 to lower the operating shaft 9. In the hydraulic jack for raising and lowering the chair of the beauty chair, which raises the operating pedal 34 to the uppermost position and fixes the operating shaft 9 by the fixing clamp 36, to the fixed cylinder 4 The operation shaft 9 is a sheet installation portion (2) concave in the coupling groove 10 ' 10) is integrally formed, and the spring washer 14, the pressure packing 15, and the packing sheet 11 are sequentially inserted into the outer circumference thereof, and the fixing cylinder 4 is inserted into the coupling groove 10 '. The cushion pin 12 having a lower outer diameter smaller than the inner diameter formed above the ball 16 placed in the hydraulic oil flow path 8 on the side is engaged with the packing sheet 11 as the fixing pin 13. In addition, the hydraulic fluid distribution hole (17) is formed on one side of the hydraulic oil distribution path (8) to insert the flow pin 18 of the outer diameter smaller than its inner diameter, the working piston which is inserted into the inside of the movable cylinder (5) 19, the hydraulic oil inlet 19a is provided at one side, and the push pin 20 integrally formed with the expansion part 20a is installed at the bottom by the fixing pin 21, and the movable cylinder 5 is installed. The hydraulic oil distribution groove 23a is formed at the upper end on the hydraulic oil distribution path 8 on the side thereof, and coincides with the outer diameter of the expansion part 20a of the push pin 20. The chair of the beauty chair, characterized in that it is formed by attaching the valve body 23, which sequentially combines the ball 25, the spring 24, the spring sheet 22 to form the oil inlet hole 23 ' , Hydraulic jack for downward adjustment.