KR20030001182A - chair - Google Patents

Abstract

PURPOSE: Provided is a chair with a temporary desk formed including an armrest part and a body part which adds various functions to a common desk so that it contributes to maximize the function of the desk. CONSTITUTION: The chair with the temporary desk formed including the armrest part and the body part is characterized by comprising the parts of: the body part(1) which forms the temporary desk at one side of the chair(2); the armrest part(3) which divides the weight of the temporary desk to support the temporary desk at the other side of the chair; and a rotation tool which connects the temporary desk and a support member for the body part.

Description

Chair which formed simple desk having armrest part and main body part {chair}

The present invention relates to a chair on which a simple desk is formed. The present invention can be configured as a removable desk by using a simple desk without the use of a simple desk, and can also be used as a chair, and can also be combined with a simple desk to the chair can not be removable, but utilized as a lecture chair through a solid coupling You can do The length or height of the desk can be adjusted to suit the user's physical condition. In addition, the simple desk has a variety of forms for convenient use of the simple desk. For example, it is also possible to form a left and right split type simple desk which divides the simple desk from side to side, or to form an overlapping simple desk. The present invention is configured to be able to firmly support the desk through the body portion formed with a simple desk and the armrest supporting the same. In the present invention, the main body portion and the armrest portion supporting the simple desk is formed can be used alone or at the same time, respectively, and when not in use, it is possible to remove and store them. In addition, the auxiliary bookshelf can be detachably installed on the seat, maximizing the use efficiency of the simple desk, and adding convenience to the folding desk by folding the reading stand.

The present invention is a technique for a desk comprising a chair or a chair function that constitutes a desk function that allows the functions of a chair and a desk to be used at the same time. The present invention can be used at the same time the chair and the desk, it is also possible to use the function of the chair without using the desk. In the present invention, there is a function of using only the armrest and the function of using only the body portion, and the function of using the armrest and the body portion at the same time, and the function of using only as a chair by removing all the body portion and armrest. In the present invention, a lot of technical efforts have been made to the configuration of the desk to efficiently use the desk. In the prior art, there has been a simple technique such as extending or folding a simple desk through a hinge coupling to one side of an armrest formed on a wheelchair chair.

In the chair equipped with the function of the desk, the technical configuration for attaching and detaching the desk, and also separate the main body and armrest so that the user can use the desk firmly and conveniently when using the desk to support the load that the desk receives The task of the present invention is to implement a technology that improves various functional aspects of the main body for convenience of use and technology.

1 is a block diagram of a chair having a simple desk with a fixed or removable armrest and a main body.

2 is a configuration diagram of the main body of FIG.

3 is an embodiment of a rotating means.

4 is a configuration diagram of the armrest portion of FIG.

5 is an embodiment of a left and right partitioned simple desk.

6 is a block diagram of the main body of the left and right partitioned simple desk.

7 is a cross-sectional view of a simple desk that forms a foldable reading table.

8 is a block diagram of each part of the left and right partitioned simple desk.

9 is another embodiment of the left and right partitioned simple desk.

FIG. 10 is a block diagram of each part of FIG.

11 is a configuration diagram of an overlap simple desk.

12 is a block diagram of each part of the overlap simple desk.

13 is an explanatory diagram of a partitioned simple desk.

14 is an explanatory diagram of a simple desk having a wing.

15 is an explanatory diagram of a simple desk in which a drawer is formed.

FIG. 16 is an explanatory diagram for explaining a rotating table having a structure capable of rotating the simple desk in a horizontal plane.

17 is an explanatory diagram for explaining a configuration of a booklet that is detachably fixed.

18 is an embodiment of the height adjusting means.

19 is an embodiment of the length adjusting means.

20 is another embodiment of the length adjusting means.

21 is a block diagram of a chair that forms a small desk.

22 is an explanatory diagram of a simple desk that constitutes a main body portion which can be rotated 270 degrees.

23 is an explanatory view of the formation of the armrest portion dividing simple desk on the detachable armrest portion.

24 is an explanatory diagram for explaining a configuration of a chair on which a left and right partitioned simple desk is formed.

25 is a configuration diagram of a chair configured to attach and detach the main body and armrests to a fixing member fixed to a seat plate or a column.

FIG. 26 is a block diagram of a chair having a main body and an armrest fixed to a seat plate. FIG.

27 is a configuration diagram of a chair having a simple desk on which a main body portion or an armrest portion is fixed to a column.

Description of the main parts of the drawing

DESCRIPTION OF SYMBOLS 1 Main body 2: Chair 3: Armrest part 4: Simple desk 5: Main body 6: Simple desk fixture 7: Rotating means 8: Main body support member 9: Rotating body 10: Stopper 11: Political body 12: Rotating range 13 : Armrest 14: Armrest support member 15: Armrest part partitioning simple desk 16: Body part partitioning simple desk 17: Armrest part support member 18: Body part support member 19: Body part partitioning simple desk 20: Partitioning simple desk coupling protrusion 21: Simple Desk rotating means 22: main body support member 23: partitioned simple desk coupling main portion 24: armrest part partitioned simple desk 25: armrest support member 26: main body partitioned simple desk protrusion 27: body part support member 28: armrest part partitioned simple desk 29 : Cup fixing hole 30: armrest part partitioning simple desk protrusion 31: body part partitioning simple desk 32: body part partitioning simple desk protrusion 33: armrest support member 34: body part partitioning simple desk protrusion 35: partitioning simple desk coupling portion 36: body Division division simple desk 37: Overlap simple desk Body part 38: Overlap simple desk Upper armrest portion 39: cup fixing hole 40: coupling recess 41: simple desk overlap portion 42: main body supporting member 43, 45: first simple desk 44, 46: second simple desk 47: left wing 48: right wing 49: Simplified desk 50: Hinge 51: Drawer 52: Simplified desk 53: Main body supporting member 54: Swivel 55, 56: Small desk 57, 58: Small desk supporting member 59, 60: Small desk fixing member 61: Seat 62: Armrest support Member 63: height adjusting means 64: length adjusting member 65: main body supporting member 66: long hole 67: adjusting pin 68: main body supporting means 69: length adjusting member 70: tightening nut 71: adjusting pin 72: simple desk 73: main body Sub support member 74: Length adjusting member 75: Stop ball 76: Groove 77: Small desk 78: Small desk supporting member 79: Armrest part simple desk 80: Armrest supporting member 81: Armrest supporting member 82: Simple desk supporting member 83: Simplified desk 84: Armrest part support member 85: Armrest part simple desk 86: Body part partitioning simple desk 87: Armrest part partitioning simple desk 88: Seat plate 89: Column 90: Body part 91: Fixed member 92: Armrest part 93: Body 94: armrest portion 95: seat plate 96: Column 97: body portion 98: armrest portion

The present invention relates to a chair configured with a simple desk, and more particularly, a detachable configuration of a desk to use only a function of a chair without using a simple desk, and a desk configured to support a load by dividing the desk into a body part and an armrest part. The unique technical configuration of the present invention seeks the stability of the desk, and provides convenience through various functional configurations of the simple desk. The present invention is composed of a main body portion on which a simple desk is formed, and an armrest portion for supporting the main body portion and sharing the load of the main body portion in order to form a desk on the chair. However, in some cases, since the structure of the armrest portion is omitted, not only the main body portion can perform the function well, but also the armrest portion alone can sufficiently achieve its own function, and this unique portion of the present invention is also the scope of the present invention. Belongs to. The present invention is configured in various forms to perform an efficient function of a simple desk, in particular, by dividing the simple desk from side to side, part of the main body portion, part of the armrest portion to share the function to enjoy various effects in actual use. It was configured to be able. In addition, both the main body and the armrest of the present invention to be fixed to the frame of the chair through a single configuration at the same time or separately, or both configured to be detachably detached belong to the scope of the present invention. Hereinafter will be described in detail based on the drawings.

1 is a block diagram of a chair having a simple desk with a fixed or removable armrest and a main body. The present invention is a technology that combines the functions of the chair and the desk, in order to form a desk in a conventional chair, the present invention takes the form of forming the main body and armrests to be coupled to the chair. A simple desk is formed in the body part to be coupled to the frame of the chair, and the armrest part supports the main body part and performs a function of sharing the vertical load received by the simple desk part of the main body part. However, the armrest can also perform its own function. At this time, it also performs the function of the armrest, and also performs a simple simple desk function. The embodiment of FIG. 1 consists of the main-body part 1 in which the simple desk which is fixedly coupled to the chair 2, and the armrest part 3 which supports the said main-body part are comprised.

2 is a configuration diagram of the main body of FIG. The simple desk 4 is formed in the main body 5, and the simple desk is firmly connected to the chair frame by the main body supporting member 8. At this time, the main body support member may be firmly coupled to the frame of the chair by welding or the like, and the main body may be detached from the chair by a detachable method by the method described below. The rotating means 7 is a means for rotatably connecting the simple desk with respect to the main body support member. On the bottom of the simple desk, it is possible to form a simple desk fixture 6 which detachably couples the simple desk to the armrest portion. In the present invention, the technical configuration of the main body covers an important part.

The main body is a portion in which a simple desk main body coupled to the chair is formed, and the main body should also provide a function to allow entry and exit to the chair. In order to provide a function of the entry and exit, the main body portion is configured to rotate the simple desk so that the user can enter and exit, and in the method of rotation, simple in a plane on which the simple desk is formed as shown in FIG. The desk may be rotated. Alternatively, the simple desk may be rotated about an axis of the main body supporting member. If the rotating means is not coupled to the main body, it is not already a function of the main body, but rather a function of the armrest. In the present invention, the main body portion is necessarily defined as combining the main body support member and the simple desk with the rotation means, and if not having the rotation means even through the support member, the concept of the present invention corresponds to the main body part. Rather it will correspond to the armrest to be described later. In the present invention, the armrest portion of the simplest form, which is composed only of the supporting member, is also possible, but the simple desk is fixedly defined as belonging to the region of the armrest portion.

3 is an embodiment of a rotating means. The simple desk rotating means means a means for rotating the simple desk with respect to the main body support member, which can be configured in various forms. As one of the simplest embodiments, there may be exemplified a constitution in which the rotary body 9 having the rotary stopper 10 and the stopper 11 having the rotary range 12 are combined to limit the range of rotation.

4 is a configuration diagram of the armrest portion of FIG. The armrest part is in charge of supporting the main body part, and in some cases, is also responsible for the function of the armrest part independently. The armrest part is supported by the armrest support member 14. This figure shows that the armrest is formed on the armrest support member. However, armrests can be used conveniently by adding various functions. Armrest support member is firmly coupled to the frame of the chair, or is formed in a structure that can be removable. The simplest form as the armrest part is composed of only the armrest support member itself, the next simple case is the form of the armrest is formed on the armrest support member to support the simple desk, while serving as a function of the armrest, here various various desks It is also defined as belonging to the armrest part fixedly coupled to the armrest support member. That is, the function of the main body part is defined if the rotating member is present in the support member for supporting the simple desk, and the armrest part is defined if the rotating member does not exist.

5 is an embodiment of a left and right partitioned simple desk. The simple desk in the present invention may be configured as one without dividing, but the functions may be diversified to the left and right for the convenience of the user. In this case, the divided simplified desk 15 on one side is coupled to the armrest supporting member 17, which is called the armrest divided partitioned desk 15. The divided simplified desk of the other side is coupled to the main body support member 18, which is called the main body divided simplified desk (16). The main body partitioning simple desk can be rotated with respect to the main body support member by the above-described rotating means, and the armrest partitioning simple desk is fixedly coupled to the armrest supporting member without rotation. The main reason for the partitioning like this is that when the user tries to get up from the chair while working on a simple desk, the main body partition should be rotated out of the desk. At this time, you can not put things on the main body part simple desk, but the armrest part simple desk is fixed, so you can leave the object on the armrest part simple desk and come out. Due to this practical functional problem, the simple desk is divided into two sides.

6 is a block diagram of the main body of the left and right partitioned simple desk. The main body portion of the left and right divided simplified desks is composed of a main body divided simplified desk 19, a simple desk rotating means 21, and a main body portion supporting member 22. At this time, one side of the main portion of the partitioned simple desk is formed with a protruding portion of the partitioned simple desk engaging protrusion 20, which is combined with the main portion of the armrest portion of the partitioned simple desk, the left and right simple desk is firmly coupled to ensure structural stability. It is responsible for maintaining it.

7 is a cross-sectional view of a simple desk that forms a foldable reading table. In the simple desk, the reading stand 24 which can be folded in the front part of the simple desk can be formed. Therefore, you can open the book to position the book, and when not using the book, fold it and use it.

8 is a block diagram of each part of the left and right partitioned simple desk. (a) is a block diagram of an armrest part. The armrest part partitioning simple desk 24 is fixedly coupled to the armrest part support member 25. A portion of the armrest support member 25 is formed between the partitioning simple desk coupling recess 23, which is coupled to the partitioning simple desk coupling protrusion of the main body. Thus, by combining the coupling recess and the protrusion is an important technology that can be firmly supported by the simple desk divided into left and right. (b) is a block diagram of a main body part. The main body part supporting member 27 is rotatably coupled to the main body part supporting desk 27 by rotation means. Moreover, the engaging protrusion is formed in the main body part simple desk. The left and right divided simplified desks may be configured to form curved portions in the divided surface. That is, the recessed portion was formed on the upper part of the armrest part partitioned simple desk, and the projecting part 26 was formed on the upper part of the main body part simplified simplified desk of the corresponding part so as to function as a male and female such that the recessed part and the projected part paired with each other. Was done. By constructing the protrusions and the indentation like this will be able to induce a more firm coupling. In addition, in order for the load of the main body portion to be supported by the armrest portion, there must be a support area for supporting the main body portion at any position of the boundary line where the armrest portion simplified desk and the main body portion simplified desk meet. In this embodiment, the support region is formed in the recess of the armrest portion. In addition, in the supporting region, the partitioning simple desk coupling recess is formed, and the engaging protrusion is formed in the main body portion at the corresponding place.

9 is another embodiment of the left and right partitioned simple desk. Since the armrest part of the split simple desk is fixedly formed on the armrest part supporting member, the armrest part can perform the function of the excellent simple desk even as the sole. That is, even if only the armrest portion is used without using the main body portion, not only the function as the armrest can be achieved, but also a simple desk formed in the armrest portion can easily perform the function of the desk. Using only the armrest portion without using the main body has the advantage that the user can freely enter and exit the chair. However, the desk in a completely stable form is also possible only when the armrest and the main body are combined. In the armrest part partitioning simple desk 28, the cup fixing hole 29 was formed so that a cup could be located. In the present Example of FIG. 9, a part of the upper part of the armrest part formed the protrusion part. In other words, by forming the armrest partitioned simple desk projection 30 to widen the use area greatly enhanced the function as a desk of the armrest portion. However, even in this case, in order for the main body portion to be strongly supported on the armrest portion, a part of the divided simplified desk 31 of the main body portion must be supported by the support area of the divided simplified desk portion of the armrest portion.

FIG. 10 is a block diagram of each part of FIG. (a) is a block diagram of an armrest part. The armrest part partitioning simple desk is fixedly coupled to the armrest part support member 33. A portion of the armrest supporting member is formed on the partitioning simple desk coupling recess 35, which is a partitioning simple desk coupling protrusion formed on the simple desk of the main body. (b) is a block diagram of a main body part. In order to allow the main body portion to be supported by the armrest portion, a supporting area is formed under the armrest portion at any one of the boundary areas where the divided simplified desk of the main body portion and the divided simplified desk portion of the armrest portion contact each other so that the supporting region supports the divided simplified desk portion of the main body portion. do. The support area three coupling recesses are formed. In this embodiment, a portion of the armrest support member is used as a support region as it is, and thus a coupling recess is formed on a portion of the armrest support member.

11 is a configuration diagram of an overlap simple desk. The overlap simple desk means that the simple desk of the main body part is formed of a complete simple desk which is not divided into left and right, but also forms a small simple desk on the armrest part. In appearance, the simple desk of an armrest part can be formed in the same form as a part of the simple desk of a main body part. At this time, the simple desk of the main body is referred to as the overlap simple desk main body 37, and the upper portion of the simple desk of the armrest is referred to as the overlap simple desk armrest 38.

12 is a block diagram of each part of the overlap simple desk. The armrest part is fixedly formed on the support member by the overlap simple armrest part. The cup fixing hole 39 is formed, and the engaging recess 40 is formed at an arbitrary position of the overlapping area. The main body part is coupled to the supporting member 42 by the overlap simple desk 41 by a rotation means. The engaging protrusion is formed at a position corresponding to the point where the engaging recess is formed.

13 is an explanatory diagram of a partitioned simple desk. If you don't use a simple desk, the smaller the size, the better. In order to achieve the above object, the present invention has been developed in a structure capable of folding a simple desk. In other words, the simple desk is divided and folded by a folding means such as a hinge or a hinge. The desk is divided into a first simple desk 43 and a second simple desk, and these divided simple desks are folded using a hinge or the like. At this time, not only the straight line but also the desired line can be divided.

14 is an explanatory diagram of a simple desk on which wings are formed. In order to use a larger area desk as in the divided simplified desk of FIG. 13, the wings 47, 48 are attached to the left, right, front and rear of the simple desk 49, and these wings are folded through the hinge 50. Configure to do this.

15 is an explanatory diagram of a simple desk in which a drawer is formed. On the lower surface of the simple desk, it is more convenient to form a drawer 51 that can simply store things.

FIG. 16 is an explanatory diagram for explaining a rotating table having a structure capable of rotating the simple desk in a horizontal plane. The simple desk rotates for the user's entrance and exit. At this time, it would be more effective to enter and leave things that were on the simple desk as it is. To do this, this can be achieved by rotating the simple desk in the plane in which it is placed. For this purpose, when the rotary table 54 is formed on the main body support member 53, and the simple desk 52 is placed on the rotary table, the rotation of the simple desk is performed in the plane on which the simple desk is placed.

17 is an explanatory diagram for explaining a configuration of a booklet that is detachably fixed. In the present invention, the configuration for the attachment and detachment of the main body and armrests will be described through this figure. When the fixing member is firmly coupled to the seat plate, and the fixing member is formed in a structure capable of inserting and detaching the supporting member of the main body portion or the armrest portion, the detachable simple desk of the present invention is configured. The structure for attachment and detachment includes not only a detachable type as shown in FIG. 17 but also a coupling by a bolt nut and the like. In such a detachable system, the booklets 55 and 56 which are connected to the bookshelf support members 57 and 58 can be detachably attached to the bookshelf fixing members 59 and 60 fixed to the seat plate. Desorption is preferably made at the bottom or side of the seat plate. The bookshelf in this invention is a structure which can be used simply in addition to the simple desk of this invention. If you are using a laptop, you will be able to perform a secondary function so that you can use the desk more efficiently. In the detachable type, the support member supporting the main body and the armrest or the small desk is firmly coupled without swinging. When the support member is formed as two or more branches, it is not only rigid but also rotational. This can be prevented, and the appearance can be made beautiful. In addition, in attaching the support member to the fixing member which is fixed to the seat plate, it is necessary to securely engage with a bolt or the like in order to perform a more firm attachment. To this end, the locking member is configured to the fixing member. When the removable bookshelf is not used, the bookshelf can be stored in the space under the seat plate.

18 is an embodiment of the height adjusting means. The technical configuration for adjusting the height or length of the main body portion or the armrest portion of the present invention will be described with reference to FIGS. 18 and 19 and 20. FIG. The simple desk of the present invention needs to adjust the height or length of the simple desk according to the physical condition of the user or the environment at the time of use. For this purpose, the length adjusting means and the height adjusting means are configured. Armrest support member 62 will be described that the height can be adjusted by the height adjustment means (63). Of course, the height adjustment means can be formed in the armrest portion or the main body portion.

19 is an embodiment of the length adjusting means. Sometimes it is necessary to adjust the front and rear lengths of the body and armrests. As an embodiment of the length adjusting means, the main body supporting member 65 or the armrest supporting member is inserted into the length adjusting member 64 constituted by the hollow pipe, and the length of the supporting member and the length adjusting member is adjusted by sliding the support member and the length adjusting member. It's a configuration that lets you adjust. At this time, the long hole is formed in the longitudinal direction of the length adjusting member 64, and is firmly supported by tightening it through the nut 70 to the adjusting pin 71 coupled to the supporting member to protrude to the outside of the long hole.

20 is another embodiment of the length adjusting means. A simple desk 74 is connected to the main body support member 73 through a rotation means, and the support member is coupled to the length adjusting means 74 so as to be movable in a slider. A plurality of grooves 76 may be formed in the support member, and the length of the stop ball 75 may be adjusted by placing a stop ball 75 elastically positioned in the length adjusting member in one of the grooves.

21 is a block diagram of a chair that forms a small desk. This is shown from the angle of view of the figure of FIG. 17 from above.

22 is an explanatory diagram of a simple desk that constitutes a main body portion which can be rotated 270 degrees. The simple desk formed in the main body rotates the simple desk when the user wants to move in and out of the chair. In this case, it is ideal that the rotation angle is usually in an upright position at a position rotated about 100 degrees from the original position. In some cases, however, the simple desk 83 may be rotated 290 degrees to stand on the side of the chair. To this end, the rotation means may rotate 110 degrees or 290 degrees. In some cases, stop after 110 degrees rotation, it is more preferable to turn to 290 degrees through the act of operating once more.

23 is an explanatory view of the formation of the armrest portion dividing simple desk on the detachable armrest portion. The armrest supporting member 85 is formed on the armrest supporting member 84, and the armrest supporting member is coupled to the armrest fixing member formed on the seat plate in such a way that it can be attached. A simple desk is formed as shown in the drawing, and the desk supported by the support member is only known in the art, but it is configured to be detachably attached to the seat to belong to the technology of the present invention.

24 is an explanatory diagram for explaining a configuration of a chair on which a left and right partitioned simple desk is formed. In the drawings, the contents of the present invention constituted by a main body divided arm desk 86 and an armrest portion divided simplified desk 87 composed of a main body portion and an armrest portion will be described with reference to the drawings.

25 is a configuration diagram of a chair configured to attach and detach the main body and armrests to a fixing member fixed to a seat plate or a column. The lower part of the seat plate 88 has a column 89 for supporting the seat plate, and a fixing member 91 for attaching and detaching the main body support member 90 and the armrest support member 92 to the seat plate is fixed. Are combined.

FIG. 26 is a block diagram of a chair having a main body and an armrest fixed to a seat plate. FIG. The main body support member 93 and the armrest support member 94 are fixedly coupled to the seat plate 95 of the chair.

27 is a configuration diagram of a chair having a simple desk on which a main body portion or an armrest portion is fixed to a column. The main body portion supporting member 97 and the armrest portion supporting member 98 are fixedly coupled to the column 96.

By implementing the present invention it is possible to simply install a desk in a narrow space. The present invention has added various types of functions to maximize the function of the desk, the function of using only the chair, the function of using the chair and the desk at the same time, the function of using only the armrest portion, the function of using only the main body, the main body and It has various types of functions such as the use of armrests at the same time.

Claims (15)

One side of the chair constitutes a main body portion formed with a simple desk, and the other side of the chair forms an armrest for sharing and supporting the load of the simple desk, and the body portion supports a simple desk and a body portion supporting member, a simple desk and a body portion. Chair characterized in that for connecting the member by the rotating means. The chair according to claim 1, wherein the main body or the armrest is firmly fixed to the seat plate or column of the chair. The chair as claimed in claim 1, wherein the main body or armrest is detachably coupled to the seat plate or column of the chair. The chair according to claim 1 or 2 or 3, wherein the rotating means rotates the simple desk in the vertical direction. The chair according to claim 1 or 2, wherein the rotating means rotates the simple desk within a horizontal plane in which the simple desk is formed. A simple desk is divided into left and right, and the divided simple desk on one side is formed in the main body portion, the divided simple desk on the other side is formed chairs, characterized in that the armrest portion. The chair according to claim 6, wherein the partitioned simple desk engaging protrusion is formed on the main body partitioned simple desk, and the partitioned simple desk engaging portion is formed on the armrest partitioned simple desk. A small simple desk is formed in the armrest portion, and is supported by the armrest support member, wherein the armrest support member is characterized in that the armrest portion formed, characterized in that the armrest portion is supported detachably supported by the armrest portion fixing member formed on the seat plate. A chair having a simple desk formed on one side of the chair, wherein the main body comprises a simple desk, a main body supporting member, a simple desk and a main body supporting member connected by rotating means. A chair comprising a simple desk consisting of an overlapping simple desk. A chair comprising a folding reading table formed on a simple desk. In the chair comprising a simple desk with a main body and armrests, the booklet is connected by a booklet support member, and the booklet support member is coupled to a bookcase fixing member formed on the side or bottom surface of the seat plate on the chair. A chair comprising a simple desk and a small desk characterized by losing. The chair according to claim 1 or 2, wherein the length adjusting means is formed in the main body or the armrest. The chair according to claim 1 or 2, wherein the height adjusting means is formed in the body portion or the armrest portion. A chair with a simple desk, wherein the folding wings are formed on any side of the left, right, front, and back of the simple desk in order to increase the area of the simple desk.