WO2009031853A1

WO2009031853A1 - Chair for computer

Info

Publication number: WO2009031853A1
Application number: PCT/KR2008/005257
Authority: WO
Inventors: Il-Sang Yoon
Original assignee: Il-Sang Yoon
Priority date: 2007-09-05
Filing date: 2008-09-05
Publication date: 2009-03-12
Also published as: KR20090024896A; KR100908668B1

Abstract

A chair for a computer is disclosed, in which a user can do a computer work in a more comfortable posture while freely rotating a backrest of a chair depending on a user's body style and preference. A chair for a computer comprises a chair body having a rotary shaft at a lower side of a mounting part, support legs connected to a lower side of the chair body, respectively, a link mechanism of which one end is connected with the backrest, and the other is connected with the rotary shaft for thereby rotating the rotary shaft depending on the rotation of the backrest, and a monitor frame of which one end is connected to an end of the rotary shaft for thereby rotating in the same direction as the backrest while its length is adjustable, and the other end is equipped with a monitor bracket.

Description

Title: CHAIR FOR COMPUTER

Technical Field

The present invention relates to a chair for a computer, and in particular to a chair for computer in which a user can more comfortably work on a computer by freely moving a backrest of a computer, in which a monitor and a keyboard are installed, depending on a user's body condition or preference, and when a backrest moves backwardly, a monitor frame equipped with a monitor moves backwardly, so a user can see a monitor screen in a comfortable posture, and a user can more comfortably sit on a chair or use a keyboard since a keyboard frame used for installing a keyboard is rotatable in all directions.

Background Art

A conventional chair is generally equipped with a backrest, a seat part, and a leg part. An up and down apparatus is further provided in a leg part for thereby adjusting the height of a chair.

In order to enhance the efficiency of a computer work, a chair-type personal computer that a personal computer is combined in a chair is disclosed. In the above construction, a screen apparatus of a monitor or something and a sound apparatus of a speaker system or something are simply fixed in a corresponding frame along with a construction that a user can sit on a chair so as to obtain a visible effect and an audible effect through a computer, the entire construction is so complicated, and a user might feel tired when a user works on a computer for a long time.

In case that a chair is equipped with a height adjusting function, it is needed to move a backrest after a user works on a chair for a long time, but a backrest of the above chair rotates at a certain angle and then returns to its original position by using a rotation member unless a backrest separately moves. So, it is impossible to maintain such operation state for a long time, and stability is poor.

In order to overcome the above problems, the applicant same as the present invention disclosed a multifunctional chair 100 which was filed on January 17, 1006 (Korean patent application number 20-2006-1395) and was issued on April 13, 2006(Korean patent registration number 20-414396). As shown in Figure 1 , the multifunctional chair 100 comprises a side rotation member 101 movably installed in one side of a vertical support plate, a keyboard fixing member 103 of which one end is installed in an inner side of the side rotation member 101, and a keyboard support member 103a is movably engaged in the other end, a screen support shaft 105 which is inserted into an upper end of the side rotation member 101 with a screen 105a being fixed in its end, a first rotation member 107 which is installed in a backside of the backrest 111 , a second rotation member(not shown) movably engaged to an inner side of the vertical support plate, an intermediate member(not shown) of which both ends are fixed in the first rotation member 107 and the second rotation member(not shown), respectively, and a hinge shaft 109 which is positioned horizontally traversing the rotation member fixed in the keyboard part with its end being fixed through the side rotation member 101. However, since the backrest of the conventional multifunctional chair 100 moves backwardly, the side rotation member 101 moves backwardly as well along with the backrest. In this case, it is a little bit hard for a user to see a screen 105a.

Namely, as the backrest 111 moves backwardly, the user's sight naturally moves upwardly. Since the screen 105 moves forwardly unless its length is adjusted, the user must see downwardly so as to see the screen 105a or the user must keep his neck upward for a long time on the computer. In this case, the user might feel so tired when he works on the computer for a long time.

In case of the conventional multifunctional chair 100, since it is impossible to adjust the angles for moving the backrest 111 and the side rotation member 101 depending on the user's preference or body condition, the user cannot use the multifunctional chair 100 in a comfortable posture.

Since the keyboard support member 103a can move only on the keyboard fixing member 103, not moving forwardly or backwardly, the user cannot use the keyboard in a comfortable posture, which might hurt his wrist.

Disclosure of Invention

Accordingly, it is an object of the present invention to provide a chair for a computer by which a user can work on a computer in a comfortable posture for a long time since a backrest of a chair equipped with a monitor and a keyboard is freely movable depending on a user's body condition or preference.

It is another object of the present invention to provide a chair for a computer by which a user can see a monitor screen in a comfortable posture since a monitor frame used for installing a monitor can move backwardly when a backrest is moved backwardly. It is further another object of the present invention to provide a chair for a computer in which a keyboard frame used for installing a keyboard is rotatable in all directions, so a user can work more comfortably on a chair using a keyboard.

To achieve the above objects, there is provided a chair for a computer which comprises a chair body in which a backrest is movably installed in a mounting part, and a rotary shaft is installed in a lower side of the mounting part; support legs which are connected to an underneath of the chair body; a link apparatus of which one end is connected to the backrest, and the other end is connected to the rotary shaft for thereby rotating the rotary shaft depending on the movement of the backrest; a monitor frame of which one end is connected to an end of the rotary shaft for thereby rotating in the same direction as the backrest, and the other end is equipped with a monitor bracket with the length of the monitor frame being adjustable; and a keyboard frame of which one end is movably engaged with one side of the mounting part, and the other end is movably connected with one side of the monitor frame with a keyboard bracket being rotatably installed at a center of the keyboard. The support legs include front legs movably installed at both underneath sides of the mounting part, rear legs movably installed at both underneath sides of the backrest, and connection legs which connect the front and rear legs and are movably installed in the front legs, and are fixedly installed in the rear legs.

The link apparatus includes a front link member fixed in the rotary shaft, a rear link member fixed in the backrest, and an inner link member which is movably hinged to the front and rear link members, respectively, with the length of the inner link member being adjustable.

The monitor frame includes a lower monitor fixedly installed in an end of the rotary shaft, and an upper monitor frame which is inserted into an upper side of the lower monitor frame and allows the lower monitor frame to put into or take out when the monitor frame moves with the length of the lower monitor frame being adjustable, and with a monitor bracket being provided in an end of the upper monitor frame.

The other end of the keyboard frame is movably connected to the upper monitor frame, and the movable frame is movably connected to the keyboard frame in forward and backward directions, and the keyboard bracket is rotatably engaged to the end of the movable frame while being movable in the forward, backward, leftward and rightward directions, with the angle of the keyboard bracket being adjustable.

An elastic spring connects the front link member and the rear legs for thereby elastically biasing the link apparatus in a backward direction.

Brief Description of the Drawings

The present invention will become better understood with reference to the accompanying drawings which are given only by way of illustration and thus are not limitative of the present invention, wherein; Figure 1 is a perspective view illustrating a conventional multifunctional chair;

Figure 2 is a perspective view illustrating a chair for a computer according to an embodiment of the present invention;

Figure 3 is a side view illustrating a chair for a computer according to an embodiment of the present invention; Figure 4 is a side view illustrating a state that a backrest of a chair for a computer moves according to the present invention;

Figures 5 through 7 are operational views illustrating a chair for a computer according to an embodiment of the present invention; and

Figure 8 is a use state view illustrating a chair for a computer according to an embodiment of the present invention.

Best Mode for Carrying Out the Invention

Figure 2 is a perspective view illustrating a chair for a computer according to an embodiment of the present invention, Figure 3 is a side view illustrating a chair for a computer according to an embodiment of the present invention, Figure 4 is a side view illustrating a state that a backrest of a chair for a computer moves according to the present invention, Figures 5 through 7 are operational views illustrating a chair for a computer according to an embodiment of the present invention, and Figure 8 is a use state view illustrating a chair for a computer according to an embodiment of the present invention.

The computer chair 1 according to an embodiment of the present invention comprises a chair body 10 of which a backrest 12 is movably engaged to a mounting part 11 , and a rotary shaft 13 is installed in a lower side of the mounting part 11 , support legs 20 connected to an underneath of the chair body 10, a link apparatus of which one end is connected to the backrest 12 and the other end is connected with the rotary shaft 13 for thereby rotating the rotary shaft 13 depending on the rotation of the backrest 12, a monitor frame 40 of which one end is connected with an end of the backrest 13 for thereby rotating in the same direction as the backrest 12, and a monitor bracket 43 is installed in the other end with the length of the monitor frame being adjustable, and a keyboard frame 50 of which one end is movably engaged in one side of the mounting part 11 , and the other end is movably connected to one side of the monitor frame 40, and the center part is equipped with a keyboard bracket 52.

Here, in the chair body 10, the backrest 12 is movably engaged to the mounting part 11 , and the rotary shaft 13 is installed in a lower side of the mounting part 11 , so a user can sit on the chair body with his hips being stably supported. The elements which will be described later can be also mounted thereon.

Both sides of the backrest 12 are hinged to one side of the mounting part 11 while being rotatable in forward and backward directions. The rotary shaft 13 is movably installed to a lower side of the other side in which the backrest 12 is engaged. The link apparatus 30 and the monitor frame 40, which will be described later, are connected with the rotary shaft 13.

The support legs 20 are connected to an underneath of the chair body 10 consisting of the mounting part 11 and the backrest 12. The support legs 20 support the chair body 10 on the ground. Here, the support leg 20 comprises front legs 21 movably installed in both underneath sides of the mounting part 11 , rear legs 22 movably installed in both underneath sides of the backrest 12, and connection legs 23 which connect the front and rear legs 21 and 22 and are movably installed in the front legs 21 and are fixedly installed in the rear legs 22. As shown in Figures 3 and 4, when the user backwardly moves the backrest

12, the angle formed between the mounting part 11 and the backrest 12 is increased from A to A', and the angle formed between the front legs 21 and the connection legs 23 is increased from B to B'. As the backrest 12 moves backwardly, the rear legs 22 move backwardly as well, and the angle between the rear legs 22 and the backrest 12 is decreased from C to C

The link apparatus 30 is installed in a lower side of the chair body 10, and an end of each link apparatus 30, 30 is connected with the backrest 12, and the other end of each link apparatus is connected with the rotary shaft 13, so the rotary shaft 13 rotates depending on the rotation of the backrest 12. The link apparatus 30 comprises a front link member 31 fixed in the rotary shaft 13, a rear link member 32 fixed in the backrest 12, and an inner link member 33 of which both ends are movably hinged in the front link member 31 and the rear link member 32, respectively, with the length of the inner link member being adjustable.

The inner link member 33 includes a connection part 33a which is movably hinged to the front link member 31 and the rear link member 32, respectively, an insertion pipe part 33b of which both sides are open so that the connection part 33a can be inserted with its length being adjustable, and a rotation handle 33c which is movably installed on the insertion pipe part 33b and pushes and fixes the connection part 33a which is inserted into the inner side through the insertion pipe part 33b depending on the rotation.

The connection part 33a is putted into or is taken out of the insertion pipe part 33b for thereby adjusting the entire length of the inner link member 33. When the length of the inner link member 33 is increased as the connection part 33a is outputted out of the insertion pipe part 33b, a rotation range of the rotary shaft 13 is widened depending on the movement of the link apparatus 30, and when the length of the inner link member 33 is shortened as the connection part 33a is putted into the inner side of the insertion pipe part 33b, the rotation range of the rotary shaft 13 is narrowed depending on the movement of the link apparatus 30.

When the rotation range of the rotary shaft 13 is widened, the rotation radiuses of the monitor frame 40 and the keyboard frame 50 are widened, and when the rotation range of the rotary shaft 13 is narrowed, the rotation radiuses of the monitor frame 40 and the keyboard frame 50 are narrowed. So, the user can adjust the states of the compute chair 1 depending on his preference or body condition.

When the backrest 12 moves backwardly, the link apparatus 30 moves forwardly, and the rotary shaft 13 fixed to the front link member 31 is rotated in the counterclockwise direction, and the monitor frame 40 integrally connected with the end of the rotary shaft 13 moves backwardly along with the backrest 12.

When the backrest 12 moves forwardly, the link apparatus 30 moves backwardly, and the rotary shaft 13 fixed to the front link member 31 is rotated in the clockwise direction, and the monitor frame 40 integrally connected to the end of the rotary shaft 13 moves forwardly along with the backrest 12.

The front link member 31 further includes a fixing frame 31a, and an elastic spring 60, which will be described later, is connected to the fixing frame 31a.

The monitor frame 40 is connected to the end of the rotary shaft 13 connected with the front link member 31 , and the length of the monitor frame 40 is adjusted in forward and backward directions depending on the rotation of the backrest 12, so the user can see the monitor in a more comfortable posture.

The monitor frame 40 includes a lower monitor frame 41 fixed to an end of the rotary shaft 13, and an upper monitor frame 42 which is inserted into the upper side of the lower monitor frame 41 and allows the monitor frame 41 to be putted into and to be taken out while adjusting its length depending on the rotation of the monitor frame 40 with a monitor bracket 43 being provided on the end of the upper monitor frame.

The monitor bracket 43 is provided for installing a monitor and is hinged while adjusting the angle of the monitor frame 40. It can be rotated at a certain angle depending on the user's preference or body condition.

A keyboard frame is movably engaged to one side of the mounting part 11. The keyboard frame is connected to the upper monitor frame 42 for thereby adjusting the length of the monitor frame 40, and the keyboard bracket 52 is rotatably installed for the use of the keyboard.

The other end of the keyboard frame 50 is movably connected on the upper monitor frame 42, and a movable frame 51 is movably connected on the keyboard frame 50 in forward and backward directions. A keyboard bracket 52 is rotatably engaged to an end of the movable frame 51 , so it can move in forward, backward, leftward and rightward directions, and its angle can be adjusted. The length of the monitor frame 40, which moves backwardly by means of the link apparatus 30 and the rotary shaft 13 as the backrest 12 moves backwardly, is adjusted since the upper monitor frame 42 is connected with the keyboard frame 50, and the upper monitor frame 42 moves on the lower monitor frame 41. At this time, the height of the monitor installed in the monitor bracket 43 increases as the length of the monitor frame 40 is increased, so the user can see the monitor in a state that the backrest 12 is moved. If necessary, the angle of the monitor bracket 43 hinged to the upper monitor frame 42 can be adjusted.

The keyboard bracket 52 is rotatably installed in a center of the keyboard frame 50. The keyboard bracket 52 moves in forward, backward, leftward and rightward directions on the keyboard frame 50 by means of the movable frame 51 and its angle can be adjusted. The keyboard bracket 52 is rotatably engaged to the keyboard frame 50 with the help of a bi-directional hinge apparatus 53 formed as a hinge engaging part 53a hinged at both sides is rotated at 90^° . An elastic spring 60 is installed in the fixing frame 31a of the front link member

31 and the rear legs 22 while connecting both sides. The elastic spring 60 elastically biases the link apparatus 30 in the backward direction for thereby forwardly moving the backrest 12.

When the user wants to move his weight forwardly from a state that the user keeps having moved the backrest in a rearward direction, the backrest 12 can more easily moved in the forward direction with the help of the elastic force of the elastic spring 60.

The monitor installed in the monitor bracket 43 and the keyboard installed in the keyboard bracket 52 are electrically connected with the computer body(not shown) provided in one side of the computer chair 1 , so the user can use the internet or play a certain game.

The above-described computer chair 1 is not yet equipped with a certain decoration material for a good cushion effect or a good outer appearance. As shown in Figure 1 , various decoration materials might be used. The operations of the computer chair 1 according to an embodiment of the present invention will be described.

First, the user releases the rotation handle 33c of the link apparatus 30 and puts into or takes out a connection pipe from the insertion pipe part 33b for thereby adjusting the length of the inner link member 33, and the user locks the rotation handle 33c and fixes the connection pipe in the insertion pipe part 33b.

The user sits on the chair body 10 by moving outwardly the keyboard bracket

52 equipped with the keyboard, and the user rotates inwardly the keyboard bracket

52 and moves the movable frame 51 in a forward or backward direction depending on the user's preference or body condition for thereby adjusting the angle, so the user can work on a computer in a comfortable posture.

In the following operations, the user moves the backrest in a backward direction. The link apparatus 30 moves in a forward direction, and the rotary shaft 13 rotates in the counterclockwise direction. The monitor frame 40 connected with the rotary shaft 13 moves in a backward direction along with the backrest 12 for thereby adjusting its length, so the user can see the monitor in a more comfortable posture. Here, the angle can be adjusted by moving the monitor bracket 43.

The user can also use the compute chair 1 unless the backrest 12 is not moved in a backward direction. In this case, it is possible to easily use the computer chair 1 by setting only the keyboard frame 50. When the use of the computer is finished or when it is needed to continuously use the computer by moving the backrest 12 in a forward direction, the center of the body weight is moved forwardly, and the backrest 12 is moved forwardly, and the keyboard bracket 52 is outwardly moved, and the user gets up from the chair body 10.

Effects

As described above, in the chair for a computer according to the present invention, a backrest of a chair equipped with a monitor and a keyboard is freely movable depending on a user's body condition or preference, so the user can work on a computer in a comfortable posture. When the backrest is moved backwardly, the monitor frame can also move backwardly, so a user can see the monitor in a comfortable posture.

The keyboard frame equipped with a keyboard is movable in upward, downward, leftward and right wards, so a user can easily sit on a chair or can easily use the keyboard in a comfortable posture. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described examples are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

Claims:

1. A chair for a computer, comprising: a chair body in which a backrest is movably installed in a mounting part, and a rotary shaft is installed in a lower side of the mounting part; support legs which are connected to an underneath of the chair body; a link apparatus of which one end is connected to the backrest, and the other end is connected to the rotary shaft for thereby rotating the rotary shaft depending on the movement of the backrest; a monitor frame of which one end is connected to an end of the rotary shaft for thereby rotating in the same direction as the backrest, and the other end is equipped with a monitor bracket with the length of the monitor frame being adjustable; and a keyboard frame of which one end is movably engaged with one side of the mounting part, and the other end is movably connected with one side of the monitor frame with a keyboard bracket being installed at a center of the keyboard.

2. The chair of claim 1 , wherein said support legs include front legs movably installed at both underneath sides of the mounting part, rear legs movably installed at both underneath sides of the backrest, and connection legs which connect the front and rear legs and are movably installed in the front legs, and are fixedly installed in the rear legs.

3. The chair of either claim 1 or claim 2, wherein said link apparatus includes a front link member fixed in the rotary shaft, a rear link member fixed in the backrest, and an inner link member which is movably hinged to the front and rear link members, respectively, with the length of the inner link member being adjustable.

4. The chair of claim 3, wherein said monitor frame includes a lower monitor fixedly installed in an end of the rotary shaft, and an upper monitor frame which is inserted into an upper side of the lower monitor frame and allows the lower monitor frame to put into or take out when the monitor frame moves with the length of the lower monitor frame being adjustable, and with a monitor bracket being provided in an end of the upper monitor frame.

5. The chair of claim 4, wherein the other end of the keyboard frame is movably connected to the upper monitor frame, and the movable frame is movably connected to the keyboard frame in forward and backward directions, and the keyboard bracket is rotatably engaged to the end of the movable frame while being movable in the forward, backward, leftward and rightward directions, with the angle of the keyboard bracket being adjustable.

6. The chair of claim 5, wherein an elastic spring connects the front link member and the rear legs for thereby elastically biasing the link apparatus in a backward direction.