KR20180038180A - Chair with legs supporter - Google Patents

Abstract

The present invention relates to a pedestal chair capable of easily moving and fixing a pedestal to a desired angle by using simple operation and the weight of a leg of a user. The pedestal chair comprises: a seat on which a user can sit; a pair of armrest portions which can raise a hand of a user and which is provided on both side of the seat; a leg rest which can raise a leg of a user and which is provided on the front lower side of the seat; a pair of support springs which support the leg rest in a horizontal direction same as the seat and which is provided below the seat and the leg rest; a brake means stopping the movement of the support springs; and a leg rest control lever which controls operation of the brake means and which is connected to the brake means.

Description

{CHAIR WITH LEGS SUPPORTER}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a chair combined with a leg support capable of easily moving and fixing a leg support to a desired angle without using external power by a simple operation and a user's leg weight.

Generally, a chair is a furniture in which a person can sit, and is composed of a backrest, a seat, an armrest, and legs supporting the seat.

In the modern society, chairs are used in situations such as work, leisure, and relaxation. Therefore, the elderly or musculoskeletal disease patients who are able to live independently can live longer in their chairs.

However, when sitting on a chair, the legs are directed downward. When such a posture is taken for a long time, blood circulation is not smooth, the legs swell, and a feeling of discomfort is felt.

Therefore, a chair having a leg-rest so that it can sit comfortably on the chair and take a relaxing rest is being developed.

Korean Utility Model Publication No. 2013-0007300 discloses that a leg rest which is fixed to a support plate is pulled out from a lower side of a seat plate so that the leg rest can be rotated around the rotation axis at a predetermined angle, And the seat is fixed to the seat.

However, according to the related art, there is a problem that it is inconvenient for the elderly to use because it is difficult for the elderly who have weak muscular strength to directly pull out the leg rest from the seat back and to return the leg to the horizon in the case of the elderly who are somewhat less flexible.

Korean Patent Laid-Open Publication No. 2014-0060447 discloses a chair comprising a head rest portion, a backrest portion, a hip rest portion, a leg rest portion, and a foot rest portion in a continuous form, There is disclosed a chair which can be composed of a chair or a bed by adjusting the angle of the seat portion.

However, according to the related art, since the angle of the leg rest portion is automatically adjusted by the chair tilt adjusting switch portion, an external power or battery for driving the leg rest portion separately must be provided, There is a problem that the cost is increased.

The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a leg-rest chair capable of easily moving and fixing the leg- It has its purpose.

The present invention relates to a seat for a user to sit on; A pair of armrests provided on both sides of the seat and capable of raising a user's arm; A legrest provided on a front lower side of the seat and capable of raising a user's leg; A pair of support springs provided below the seat and the leg cradle and supporting the leg cradle in a horizontal direction like the seat; A brake means for stopping the movement of the support springs; And a leg rest control lever connected to the brake means and controlling the operation of the brake means.

When the brake means is released by the leg-rest control lever, the leg-rest supported horizontally by the support spring can be moved to a desired angle by using the leg weight, and the leg- The leg support can be fixed at a desired angle.

Therefore, even a person with weak muscles such as the elderly can easily adjust the angle of the leg support by the simple operation and the weight of the leg, so that the ease of use can be increased and the leg rest can be adjusted to a desired angle, It is possible to provide a leg support function, and it is possible to construct without any external power, thereby reducing the production cost.

1 is a perspective view showing a leg-rest chair according to the present invention.
FIGS. 2 to 4 illustrate a part of a leg-rest tilting module and a leg-rest control lever according to the present invention.
5A and 5B are side cross-sectional views illustrating an operating state of a leg-rest tilting module according to the present invention.
6 is a schematic view showing an installation structure of a body weight measuring means applied to the present invention;

Hereinafter, the present embodiment will be described in detail with reference to the accompanying drawings. It should be understood, however, that the scope of the inventive concept of the present embodiment can be determined from the matters disclosed in the present embodiment, and the spirit of the present invention possessed by the present embodiment is not limited to the embodiments in which addition, Variations.

1 is a perspective view showing a leg-rest chair according to the present invention.

1, the leg and seat combination chair according to the present invention includes a base 10, a seat 20, a backrest 30, a pair of armrests 40 and 50, a legrest 60 , A leg-rest tilting module 70, a seat control lever 80, and a leg-rest control lever 90.

The base 10 is provided to fix the entirety of the leg-rest chair together on the floor. It can stably assist the user who is weak in the musculoskeletal system such as the elderly, and can be prevented from falling down with the chair.

The seat 20 is configured to be seated comfortably by providing a predetermined cushion as a seat for a user to sit on. The seat 20 is horizontally mounted on the upper side of the base 10. The seat 20 is provided with a seat tilting module (not shown) having a link structure using a gas spring, And the rotation angle of the seat control lever 80 is adjusted by the seat control lever 80.

The seat tilting module (not shown) is a module type and fixed on the base 10 and configured to mount the seat 20, the backrest 30, and the leg- So that it is possible to implement an upright supporting chair that can easily rotate the seat 20 forward by applying it to the existing chair configuration, and can be configured in various forms.

The backrest 30 is provided so that the user can lean against the backrest. The backrest 30 can also be provided with a predetermined cushion to rest comfortably. The backrest 30 is mounted on the base 10 in a vertical or rearward inclined state and is fixed to the base 10 or a separate seat tilting module (not shown).

The armrests 40 and 50 are provided to allow the user's hands and arms to be placed on the seat 20 and include a right armrest portion 40 and a left armrest portion 50 on both sides of the seat 20, (Not shown) or a separate seat tilting module (not shown).

A handle lever (not shown) of the seat control lever 80 is exposed on the front surface of the right armrest portion 40. The legrestrest control lever 90 of the handle lever 91 (FIG. 4) are exposed.

In addition, the armrests 40 and 50 may have a predetermined space inside and may be configured to be able to open and close a space by a separate cover. In another cover, a medication time alarm setting button May be provided.

Of course, the inside of the armrests 40 and 50 can be easily taken out and stored in a shelf, or can store health-related items, but is not limited thereto.

The leg-rest 60 is provided to allow the user to lift the leg, and similarly, a predetermined cushion is provided to easily raise the leg. In addition, the leg-rest 60 is mounted so as to be downward in the vertical direction in front of the seat 20. The leg-rest 60 is installed to be rotatable in the horizontal direction as the leg-rest tilting module 70 is mounted, Its rotational angle is adjusted by the leg-rest control lever 90 to be described.

Since the leg-rest tilting module 70 is mounted on the lower side of the seat 20 and the leg-rest 60 so as to connect the seat 20 and the leg-rest 60 to each other, It is possible to easily rotate the leg-rest 60 by a desired angle. The detailed configuration will be described below.

The seat control lever 80 is provided to adjust the rotation angle of the seat tilting module (not shown). The seat control lever 80 is installed to expose a part of the handle lever (not shown) (Not shown), and the detailed configuration may be variously implemented, and thus will not be described here.

The leg-rest control lever 90 is provided to adjust the rotation angle of the leg-rest 60. Likewise, a part of the lever lever is exposed to the left leg-rest 50, and the leg-rest tilting module 70, And the detailed configuration will be described later in detail.

2 to 4 are views showing a part of a leg-rest tilting module and a leg-rest control lever applied to the present invention.

2 to 4, the leg-rest tilting module 70 includes a first fixing frame 21 bolted to the lower side of the seat 20 and a second fixing frame 21 bolted to the lower side of the leg- A pair of support springs 71 for supporting the leg-rest 60 in the horizontal direction like the seat 20, and a pair of support springs 71 The brake means includes a rotary shaft 72, a ratchet 73, a pawl 74, a moving plate 75 and a fixed plate 76, And a compression spring (77).

The support springs 71 are installed to provide an elastic force for horizontally supporting the leg supports 60 like the seat 20. The support springs 71 are disposed at a predetermined interval in the horizontal direction below the leg supports 60 And both ends thereof are fixed to the first and second fixed frames 21 and 61.

A plurality of holes 21h are provided at regular intervals in the up / down direction on the side surface of the first fixing frame 21, and a hole (not shown) is formed in the side surface of the second fixing frames 61 Wherein one end of the support springs (71) is fixed to one of the holes (21h) of the first fixing frame by a bolt, and the other end of the support springs (71) And may be fixed as being fitted into the holes 61h of the fixed frames or being structurally formed at the time of assembly, and is not limited.

The rotation shaft 72 is installed such that both ends of the rotation shaft 72 are engaged with the support springs 71 in the axial direction and rotate together with the support springs 71. The lower portion of the rotation shaft 72 is rotatably supported by the first and second fixed frames 21, So as to be rotatable.

The ratchet 73 is provided around the center of the rotation shaft 72. The outer periphery of the rotation shaft 72 and the inner periphery of the ratchet 73 are provided with rectilinear portions 72L, The rotation shaft 72 and the ratchet 73 are engaged with each other to rotate. Of course, the ratchet 73 is formed so as to be meshed with the pawl 74, which will be described later, with a gear tooth formed on its outer circumferential surface. Therefore, when the ratchet 73 is engaged with the pawl 73 described below, the rotation shaft 72 is stopped.

The other end of the pawl 74 is connected to the hinge 74a, and the other end of the pawl 74 is connected to the pawl 74. The other end of the pawl 74 is connected to the hinge 74a, 74) can be moved toward the ratchet (73) side. Accordingly, when the pawl 74 rotates a predetermined angle about the hinge 74a, the teeth of the pawl 74 selectively engage with a gear tooth of the ratchet 73 to fix the rotation shaft 72 have.

The moving plate 75 is movably installed along with the other end of the pawl 74 in a state where the moving plate 75 is connected to the other side of the pawl 74, And is fixed at a spaced position. The clamping plate 76 may be in the form of a rectangular case so that the hinge 74a of the pawl 74 may be fixed or the compression spring 77 and the operating shaft 94 to be described later may be built in. , But is not limited to.

Both ends of the compression spring 77 are supported between the moving plate 75 and the fixing plate 76. As the compression spring 77 is supported by the fixing plate 76, the elastic force of the compression spring 77 Thereby providing a force to push the moving plate 75 and the pawl 76 toward the ratchet 73 side.

The leg-rest control lever 90 is configured to mechanically transmit the movement of the user's hand to the moving plate 75 to control the operation of the leg-rest tilting module 70, A wire 92, an operating lever 93, and an operating axis 94. [0044]

The handle lever 91 is provided in one of the armrests 40 and 50 (shown in Fig. 1), and is configured in such a form that the user can pull it by hand.

The wire 92 is provided to transmit the movement of the handle lever 91, and is preferably built so as not to be exposed.

The operating lever 93 is configured as a kind of levers for transmitting the movement of the wire 92 to the operation shaft 94 to be described later. One end of the lever 92 is connected to the wire 92, Is hingedly connected to the operation shaft 94 to be described and horizontally supported on the outside of the fixing plate 76. Of course, the wire 92 and the operation shaft 94, which will be described later, are installed opposite to each other with respect to the operation lever 93.

The operating shaft 94 connects between the moving plate 74 and the operating lever 93 so as to penetrate the compression spring 77 and the fixing plate 76. In the embodiment, it is preferable that the operating lever 93 and the operating shaft 94 are hinged so as to be able to transmit the motion even if the operating lever 93 and the operating shaft 94 cross each other on the installation structure.

The other end of the operating lever 93 may be provided with a hole 93h which can be hinged to the operating shaft 94. The position of the hole 93h is determined by a force The operation lever 93 and the operation shaft 94 may intersect with each other.

5A and 5B are side cross-sectional views illustrating an operating state of a leg-rest tilting module according to the present invention.

When the user pulls the handle lever 20 to adjust the angle of the leg-rest 60, the operating lever 93 and the operating shaft 94 are pulled by a wire (not shown) as shown in Fig. 5A, As the compression spring 77 is compressed and one end of the moving plate 75 and the pawl 74 is pulled out as the teeth of the pawl 74 are released from the gear teeth of the ratchet 73, 72 are released, and the leg-rest 60 is supported on the seat 20 only by the support springs 71. [

The weight of the leg is larger than the elastic force of the support springs 71 when the user lifts the leg on the leg support 60 so that the leg support 60 is rotated about the rotation shaft 72, The angle of the leg-rest 60 can be adjusted.

Of course, when the user lowers the leg from the leg cushion 60, the angle of the leg cushion 60 can be adjusted to be level with the seat 20 by the elastic force of the springs 61.

5B, when the user releases the pull lever 20 to maintain the angle of the leg-rest 60, the operation lever 93 and the operating shaft 93 are rotated by a wire (not shown) 94 are released so that the compression spring 77 is restored to its original state and when one end of the moving plate 75 and the pawl 74 is returned to the original position, the teeth of the pawl 74 are engaged with the ratchet And the leg support 60 is mechanically supported by the seat 20 by the ratchet 73 and the pawl 74. As a result,

Therefore, even if the user lifts the leg to the leg-rest 60, the angle of the leg-rest 60 can be maintained as it is and rest can be rested comfortably.

Fig. 6 is a schematic view showing the installation structure of the weight measuring means applied to the present invention. Fig.

The weight measuring means applied to the present invention can measure the weight accurately when the user sits on the seat 20 (shown in Fig. 1) and legs are raised on the leg-rest 60 (shown in Fig. 1) A middle plate 112 fixed by a separate member at a position spaced apart from the lower side of the upper plate 111, And a weight measuring sensor 113 installed between the upper plate 111 and the middle plate 112 to connect the upper plate 111 and the middle plate 112.

In an embodiment, the upper and lower plates 111 and 112 may be configured to be included in a seat tilting module (not shown) provided to rotate the seat 20 (shown in FIG. 1) separately, No.

It is preferable that the weight measurement sensor 113 is installed at each of at least four places in order to reduce the measurement error. The weight measurement sensors 113 may be installed at four corners of the middle plate 112, (112H).

The weight measuring sensor 113 may be constituted by a plate-shaped piezoelectric element. The weight measuring sensor 113 includes an outer circumferential portion 113a bolted around the hole 112H of the middle plate 112, An inner circumferential portion 113b to be bolted to the upper plate 111 in a possible form and a measurement portion 113c to generate a voltage change according to the degree of bending of the inner circumferential portion 113b with respect to the outer circumferential portion 113a , But is not limited to.

Of course, the voltage changes measured by each of the weight measuring sensors 113 can be averaged, and then converted to weight accurately.

Accordingly, when the user puts the leg on the leg-rest 60 while standing on the seat 20 (shown in Fig. 1), the weight of the user is applied to the seat 20 (shown in Fig. 1) The inner circumferential portion 113b is bent downward with respect to the outer circumferential portion 113a and the inner circumferential portion 113b is bent with respect to the outer circumferential portion 113a as the upper plate 111 is moved downward The voltage changes according to the degree of the voltage, and the weight can be accurately measured according to the voltage change.

10: Base 20: Sheet
30: backrest portion 40,50: armrest portion
60: leg support 70: leg support
80: seat control lever 90: leg rest control lever

Claims (8)

A seat on which the user can sit;
A pair of armrests provided on both sides of the seat and capable of raising a user's arm;
A legrest provided on a front lower side of the seat and capable of raising a user's leg;
A pair of support springs provided below the seat and the leg cradle and supporting the leg cradle in a horizontal direction like the seat;
A brake means for stopping the movement of the support springs; And
And a leg rest control lever connected to the brake means and controlling the operation of the brake means. The method according to claim 1,
One end of the support spring
A first fixed frame mounted on the lower surface of the seat, a second fixed frame fixed to the lower surface of the seat,
The other end of the support spring,
Is fixed to the second fixing frame mounted on the lower surface of the legrest. 3. The method of claim 2,
Wherein the brake means comprises:
A rotation shaft rotatably supported by the first and second fixing frames and rotated in the axial direction of the support springs,
A ratchet fixed around the rotating shaft and having gear teeth formed on an outer circumferential surface thereof,
A pawl having a predetermined tooth formed on one end side thereof so as to selectively engage with the gear teeth of the ratchet and the other end being hinged;
A moving plate connected to one end side of the pole,
A fixing plate fixed at a position spaced apart from the moving plate,
And a compression spring that is supported at both ends of the moving plate and the fixing plate and provides an elastic force so that the pawl engages with the gear teeth of the ratchet. The method of claim 3,
Wherein the leg-rest control lever comprises:
A handle lever provided on one of the armrests and capable of being pulled by a user's hand,
A wire for transmitting movement of the handle lever,
An operation lever connected at one end to the wire and horizontally supported at the other side of the fixed plate,
And an operating shaft connected to the other end of the operating lever and to the moving plate and installed to pass through the compression spring and the fixing plate. 5. The method of claim 4,
Wherein the operation lever and the operation axis are hingedly connected to each other,
Wherein a plurality of holes are provided at predetermined intervals so as to be selectively hingedly connected to ends of the operating lever and the operating shaft. 6. The method according to any one of claims 1 to 5,
Further comprising weight measuring means provided on the lower side of the seat for measuring the weight of the user. The method according to claim 6,
The body weight measuring means includes:
An upper plate fixed to the lower side of the seat,
A middle plate fixed separately from the seat and the upper plate in a state spaced apart from the upper plate by a predetermined distance,
And a plurality of weight measuring sensors provided so as to connect between the upper plate and the middle plate and capable of measuring a change in voltage with a change in pressure. 8. The method of claim 7,
The above-
Wherein at least four holes are provided at predetermined intervals so that the weight measuring sensor is installed,
The weight measuring sensor includes:
An outer peripheral portion fixed around the hole of the intermediate plate,
And a plate-shaped piezoelectric element which is provided on the inner side of the outer peripheral portion so as to be capable of bending and has an inner peripheral portion fixed to the upper plate.

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