KR200325988Y1 - A chair that can adjust the height of the seat and the angle of the back and the leg support - Google Patents

Abstract

The present invention naturally adjusts the second angle of the backrest so that the seated person can receive services such as hair washing in the most comfortable posture in the user's room, beauty salon, skin beauty salon, etc. It relates to a seat lift and backrest and legrest angle adjustment chair that is easy and improves workability by allowing the operation operation to be performed by a foot without using a hand.

The present invention for realizing this is the worm 51 and the worm gear 53 and the worm gear which is driven by the forward and reverse motor 50 in order that the seat 20 is elevated and the legrest 30 and the backrest 40 are rotated. In the commercial chair is configured to include a link device that is linked to 31 and the rotational expansion of the backrest and the legrest during the ascending operation of the seat,

Each link is hinged at two points to the worm gear 53, and a seat bracket 21, a leg bracket 31, a back bracket 41 and a base frame 60 for supporting the seat. Each end includes a plurality of links hingedly coupled to each other and comprises a link device 10 which is organically interlocked according to the driving of the worm gear,

In one embodiment according to the present invention, the linkage device 10 has a first end hinged to one side of one side of the worm gear 53 and a first end hinged to the other side of the worm gear 53. The other end of the first link 11 is coupled to the hinge 13a provided at one end of each of the two links 12 and the base bracket 21 and the base frame 60, and is provided at an approximately intermediate point. A third link 13 for elevating 20 and a hinge 14a having a substantially N-shape, one end of which is coupled to the seat bracket 21, and the other end of which is coupled to the backrest bracket 41 and provided at an approximately intermediate point. The other end of the second link 12 is coupled to the fourth link 14 for rotating the backrest 40, and one end is coupled to the intermediate point hinge (13a) of the third link (13) A fifth link 15 having the other end coupled to the hinge 14b formed at one side of the four links 14, and a hinge formed at one side of the fourth link. A sixth link 16 having one end coupled to 14b, and a seventh link 17 having one end coupled to the other end of the sixth link 16 and the other end coupled to the legrest bracket 31. Characterized in that configured.

Description

A chair that can adjust the height of the seat and the angle of the back and the leg support}

The present invention relates to a chair that lifts the base used in beauty salons, skin beauty salons, etc., and the legrest and the backrest are linked to the lift of the seat to adjust the angle, and in particular, the secondary angle adjustment of the backrest is naturally performed, such as a use room, a beauty salon, It allows the seated person to receive services such as hair washing in the most comfortable posture in skin care salons, etc., and it is easy to manage due to the simple configuration of the mechanical device, which minimizes the occurrence of malfunction, and can perform the operation operation by foot without using hands. The present invention relates to a seat lift and a backrest and an adjustable angle chair to improve workability.

In general, chairs used in beauty salons, skin beauty salons, or dental hospitals can elevate the pedestal as needed, while changing the angle of the backrest or legrest so that work such as hair washing can be done in a comfortable position. A chair to use is used.

The prior art, which allows the angle of the lifting and lowering of the seat and the backrest, the legrest, is mainly configured to use a hydraulic cylinder device. Such a conventional technology has a problem that it is difficult to manage because the cost is expensive to manufacture, complicated configuration, frequent leakage, such as oil leakage due to the use of expensive hydraulic unit.

As an alternative to this problem, the present applicant has proposed a "chair lift and a footrest and a backrest operating device of a chair" filed and registered in Utility Model Registration 1993-0029806.

As shown in FIG. 4, the prior application registered technology 100 is a lift and foot of the base 120 using the forward and reverse motor 150, the worm 151, the worm gear 153, and the linkage 110. The support 130 and the backrest 140 are configured to be unfolded and rotated, thereby simplifying the configuration by removing the complex hydraulic device and the mechanical configuration. However, some problems have been pointed out by the applicant's prior art registration.

When used for washing the head, the person with the large dimension between the buttocks and head, ie the tall person sitting on the basis of the position of the seat of the occupant on the wash basin (3), with the base raised and the backrest rotated It is located on the base, and a small person may be located at the bottom of the back. Accordingly, the angle of the backrest to allow the feet to be positioned on the sink must be adjusted secondarily. However, the pre-registration technique has a difficulty in that the support of the backrest is positioned below the backrest and the angle adjustment is impossible after the angle adjustment due to the lever.

In addition, the lifting movement trajectory of the seat is configured to retreat in the direction of the backrest after the ascension, so that it should be installed at a position that is normally separated by the distance to be reversed, making it difficult to utilize space, and the switch is button-type on one side, so the hand must be used. There was a problem that inhibits workability when washing the hair to use the hand.

The present invention has been devised to solve the above problems,

The purpose of the present invention is to provide a seat lift and backrest and legrest angle adjustment chair that allows the seated person to receive services such as hair washing in the most comfortable posture in the beauty salon and skin beauty salon by naturally adjusting the secondary angle of the backrest. .

Another object of the present invention is to provide a seat lifting and backrest and legrest angle adjustment chair that is made of a mechanical device with a simple configuration to minimize the occurrence of failure to facilitate management.

Still another object of the present invention is to provide a seat lift and backrest and legrest angle adjusting chair to improve workability by enabling operation to be performed by a foot without using a hand.

1 is a partial cutaway view showing the configuration of an embodiment according to the present invention

2 is a side view of FIG. 1

3 is an operating state diagram of FIG.

4 is a block diagram of a prior art

* Explanation of symbols for the main parts of the drawings

1: chair seat elevation and backrest and legrest angle adjuster

10: link device 11: first link

12: second link 13: third link

14: fourth link 15: fifth link

16: sixth link 17: seventh link

20: base 21: base bracket

30: legrest 31: legrest bracket

40: back 41: back bracket

50: motor 51: worm

53: worm gear 54: limit switch

60: base frame 70: switching means

71: lever 71a: pressing part

71b: Connector 73: Limit switch

Seat lifting and backrest and legrest angle adjusting chair according to the present invention to achieve the above object,

It includes a worm and a worm gear driven by a forward and reverse motor and a linkage interlocking with the worm gear so that the seat is lifted and the legs and the back are rotated. In the chair,

Each link hinged to the worm gear, and a plurality of links hinged to the base frame, a footrest bracket, a backrest bracket, and a base frame, respectively, for supporting the pedestal, and according to the driving of the worm gear. Characterized in that it comprises a link device that is organically interlocked with each other.

As an embodiment according to the present invention,

The link device includes a first link having one end hinged to one side of the worm gear and a second link having one end hinged to the other side of the worm gear;

A third link for elevating the pedestal by coupling the other end of the first link to a hinge provided at one end of the pedestal bracket and the base frame and provided at an approximately intermediate point;

A fourth link for rotating the backrest by coupling the other end of the second link to a hinge having an approximately B shape and having one end coupled to the seat bracket and the other end coupled to the backrest bracket and provided at an approximately intermediate point;

A fifth link having one end coupled to the intermediate point hinge of the third link and the other end coupled to a hinge formed at one side of the fourth link;

And a sixth link having one end coupled to a hinge formed at one side of the fourth link, and a seventh link having one end coupled to the other end of the sixth link and the other end coupled to the legrest bracket. do.

Hereinafter, with reference to the accompanying drawings an embodiment of the chair lifting and backrest and legrest angle adjustment chair of the present invention will be described in more detail.

1 is a partial cutaway side view showing the configuration of an embodiment according to the present invention, Figure 2 is a right side view of FIG.

As shown in Figure 1 and 2, the seat lift and backrest and legrest angle adjusting chair 1 of one embodiment according to the present invention,

The linkage interlocked with the worm 51 and the worm gear 53 and the worm gear 31 which are driven by the forward and reverse motor 50 so that the seat 20 is lifted and the legrest 30 and the backrest 40 are rotated. It is configured to include a device and the rotation of the backrest and the legrest is made during the ascending operation of the seat,

Each link is hinged at two points to the worm gear 53, and a seat bracket 21, a leg bracket 31, a back bracket 41 and a base frame 60 for supporting the seat. Each end includes a plurality of links hingedly coupled to each other, and includes a linkage device 10 that is organically interlocked with each other according to the driving of the worm gear.

The link device 10 includes a first link 11 having one end hinged to one side of the worm gear 53 and a second link 12 having one end hinged to the other side of the worm gear 53;

One end is coupled to the pedestal bracket 21 and the base frame 60, and the other end of the first link 11 is coupled to a hinge 13a provided at an approximately intermediate point to lift the pedestal 20. 3 links (13),

The other end of the second link 12 is coupled to the hinge 14a which is formed in an approximately b-shaped shape and has one end coupled to the seat bracket 21 and the other end coupled to the backrest bracket 41 and provided at an approximately intermediate point. A fourth link 14 for rotating the 40;

A fifth link 15 having one end coupled to the intermediate point hinge 13a of the third link 13 and having the other end coupled to a hinge 14b formed at one side of the fourth link 14;

One end is coupled to the hinge 14b formed at one side of the fourth link, and a predetermined position is provided at the other end of the sixth link 16 and the other end of the sixth link 16. It is preferably configured to include a seventh link 17 which is coupled and the other end is coupled to the feet bracket 31.

The links are preferably formed symmetrically on both sides with respect to the worm gear 53 (see Fig. 2).

The linkage device 10 further includes a plurality of 3-1 links 13-1 parallel to the third link 13 between the seat bracket 21 and the base frame 60. It is desirable for stable support of

One point of the third link 13-1 is coupled to a predetermined position of the sixth link so that the leg bracket is folded to interlock.

The fourth link 14 of the link device 10 is separated into a member 14-1 coupled to the seat bracket 21 and a member 14-2 coupled to the backrest bracket 41, and move integrally with each other. It may be combined so that.

The reverse rotation motor 50 is installed by hinged to the lower side of the base frame 60, the pressing portion 71a which is stepped on the foot to determine the direction of rotation is formed on both sides and the connector 71b is formed on the other side (71b) ), And forward and backward driving is controlled by the switching means 70 including the limit switch 73 provided on both sides of the connector (71b).

In addition, the worm is formed in a fan shape, in order to limit the rotation angle region of the forward and reverse rotation motor 50, the connector 53b is integrally attached to one side of the worm gear shaft 53a and both sides of the connector 53b. It is preferable to install the limit switch 54 at two points of the base frame 60 corresponding to the above.

Such a configuration allows the power to be turned off when the connector 53b, which is integrally rotated with the worm gear 53, is connected to the limit switch 54 provided at both sides, so that the lifting angle of the seat and the rotational angle of the backrest and the legrest are constant. Make sure that it is stable within the range.

A safety support end 14c for the backrest bracket is formed at the tip of the engaging hinge portion 14d with the backrest bracket 41 which is the other end of the fourth link 14,

The backrest bracket 41 preferably has a predetermined space 41a formed between the fourth link safety support end 14c and a predetermined angle adjustment at the coupling hinge portion 14d.

The safety support 14c is inclined to prevent the backrest from falling back, and the backrest 40 is flexibly angled within a predetermined range due to the space 41a.

The link device is preferably configured in such a way that the lifting operation of the pedestal 20 is made while moving forward from the rear in which the backrest 40 is located.

A cover (not shown) is installed below the chair on which the link device is installed.

3 is an operating state diagram of FIG. 1.

With reference to Figures 1 to 3 looks at the operating state of the seat lift and backrest and legrest angle adjustment chair 1 according to the present invention having such a configuration.

Stepping on one side pressing portion 71a of the lever 71 which is the switching means 70 of the motor 50 in the steady state as shown in FIG. 1, the motor 50 and the worm 51 are rotated forward, and the worm gear A deceleration forward rotation of 53 is performed.

When the worm gear 53 is rotated in the clockwise direction in the drawing, one end of the worm gear is supported and the other end of the first link 11 coupled to the intermediate point hinge 13a of the third link 13 is the third link ( 13 is pushed up and the third link 13 is rotated to be close to the vertical around the hinge point 13b coupled to the base frame 60 to raise the pedestal 20 coupled to the other end thereof.

At this time, the seat 20 is moved from the back to the front side from the back, the plurality of 3-1 links (13-1) installed in parallel with the third link 13 is the third link (3) Along with the base 20 will be stably supported.

At the same time, as the second link 12 pulls down the fourth link 14 having the intermediate point hinge 14a coupled to the other end thereof, the fourth link 14 is connected to the seat bracket 21 once. It is rotated in a direction close to the horizontal while rotating at the hinge point (14e) of.

At the same time, one end is supported by the intermediate point hinge 13a of the third link 13 and the other end is pulled downward by the fifth link 15 supported by one side hinge 14b of the fourth link 14. One end of the fifth link 15 is supported by the same hinge point 14b and the other end of the sixth link 16 coupled to the third link and the other end of the sixth link, and one end is supported by the leg. The seventh link 17 supported by the bracket 31 is rotated about the hinge point 31a to be unfolded to be almost horizontal.

In the base frame 60, the connector 53b is formed integrally with the worm gear shaft 53a at the point in which the seat 20, the backrest 40 and the legrest 30 are raised and rotated at a set height and spread angle. The driving of the motor 50 is stopped by hitting the installed limit switch 54 and turning off the power supply.

In this way, when the rest 20 is raised and the legrest 30 and the backrest 40 are rotated and returned to their original positions, both pressing portions 71a of the lever 71 of the switching means 70 are returned. Stepping on the pressing part of the other side to allow the motor 50 to rotate in reverse, the worm 51 and the worm gear 53 are rotated in the opposite direction, the base 20 is rotated / lowered in the reverse order of the above rise and unfold operation. At the same time, the legrest 30 and the backrest 40 are returned to be close to the vertical direction.

On the other hand, when used for washing the hair, the position of the hips varies depending on the physique of the seated person for the two feet to be placed on the sink (3) in the state in which the linkage device 10 is operated and the backrest 40 is laid down by the primary angle adjustment. According to the secondary angle adjustment of the backrest should be naturally adjusted, the backrest bracket 41 is coupled with the space between the fourth link and the seat 41a so that the angle can be adjusted by the seated hinge 14d centered around According to the hip position, the second angle adjustment of the backrest is made naturally so that the feet are positioned stably on the sink, so that you can take a comfortable position.

In addition, as described above, as the seat 20 is moved forward from the rear of the backrest 40 to the front, the chair 20 can be installed closer to the vanity when installed compared to the conventional technology in which the seat 20 is moved backwards. Let this be done.

The present invention allows the seated person to receive services such as hair washing in a comfortable position as much as possible in a user's room, beauty salon, skin beauty salon, etc., and is made of a mechanical device with a simple configuration so that the on / off operation can be performed by foot. Operation is also easy.

The present invention is not limited to the above-described embodiments and drawings because various substitutions, modifications, and changes are possible to those skilled in the art without departing from the technical spirit of the present invention. .

As described in detail above, the seat lift and backrest and the legrest angle adjusting chair according to the present invention,

The second angle adjustment of the backrest is naturally made so that the seated person can receive services such as hair washing in the most comfortable posture in the user's room, beauty salon, skin beauty salon, etc. It is a technology that has many advantages, such as improving workability by allowing operation operations to be performed by hands without using hands.

Claims (7)

The linkage interlocked with the worm 51 and the worm gear 53 and the worm gear 31 which are driven by the forward and reverse motor 50 so that the seat 20 is lifted and the legrest 30 and the backrest 40 are rotated. In the commercial chair is configured to include a device and the rotation of the backrest and the legrest in the ascending operation of the seat Each link is hinged at two points to the worm gear 53, and a seat bracket 21, a leg bracket 31, a back bracket 41 and a base frame 60 for supporting the seat. A seat lifting and backrest and legrest angle adjusting chair, each of which includes a plurality of links, one end of which is hinged, and comprises a link device 10 which is organically interlocked according to the driving of the worm gear. The method of claim 1, The link device 10 includes a first link 11 having one end hinged to one side of the worm gear 53 and a second link 12 having one end hinged to the other side of the worm gear 53; One end is coupled to the pedestal bracket 21 and the base frame 60, and the other end of the first link 11 is coupled to a hinge 13a provided at an approximately intermediate point to lift the pedestal 20. 3 links (13), The other end of the second link 12 is coupled to the hinge (14a) is formed in the approximately b-shape and the other end is coupled to the back bracket (21) and the other end is coupled to the back bracket (41) and provided at approximately the middle point A fourth link 14 for rotating the 40; A fifth link 15 having one end coupled to the intermediate point hinge 13a of the third link 13 and having the other end coupled to a hinge 14b formed at one side of the fourth link 14; A sixth link 16 having one end coupled to a hinge 14b formed at one side of the fourth link, and one end coupled to the other end of the sixth link 16, and the other end connected to the legrest bracket 31. Seat lifting and backrest and legrest angle adjustment chair characterized in that it comprises a seventh link (17) that is coupled. The method of claim 1, The linkage device 10 has a plurality of 3-1 links (13-1) in parallel with the third link 13 between the seat bracket 21 and the base frame 60, the rest of the platform lifting And backrest and legrest angle adjusting chair. The method according to claim 1 or 2, The fourth link 14 of the link device 10 is separated into a member 14-1 coupled to the seat bracket 21 and a member 14-2 coupled to the back bracket, and are coupled to move together. Stool lifting and backrest and legrest angle adjustment chair. The method of claim 1, The reverse rotation motor 50 is installed by hinged to the lower side of the base frame 60, the pressing portion 71a which is stepped on the foot to determine the direction of rotation is formed on both sides and the connector 71b is formed on the other side (71b) And a forward and backward drive is controlled by a switching means 70 including a limit switch 73 provided on both sides of the connector 71b. The method of claim 1, A safety support end 14c for the backrest bracket is formed at the tip of the engaging hinge portion 14d with the backrest bracket 41 which is the other end of the fourth link 14, The backrest bracket 41 is provided with a predetermined space 41a between the fourth link safety support end and 14c so that a predetermined angle can be adjusted at the coupling hinge portion 14d. And legrest angle chair. The method of claim 1, Ascending operation of the seat 20, the seat back lifting and backrest and legrest angle adjustment chair, characterized in that is made while moving forward from the back is located.