JP2004049816A - Chair with chest support body and chest pad used for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chair with a chest support body preventing the upper limbs of a user from contacting with a chest pad or the support part of the chest pad in working and improving the working efficiency of the user. <P>SOLUTION: This chair with the chest support body is provided with a leg part 20, a seat 31 rotationally supported to the upper part of the leg part 20, and a chest part support body 50 having the chest pad 51 supporting the frontward inclined posture to the chest part, and the support part 52 supporting the chest pad 51. The width of the chest pad 51 is formed narrower than the width of the chest part, the support part 50 is provided with a support arm part 52d extending from a front part one side of the seat 31 to the chest part, so that the chest pad and the support part are disposed outside the moving range of the upper limbs required in the working. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a chair with a chest support that supports a forward leaning posture when performing work while sitting down, and more specifically, a seat back of the chest support is supported by turning a seat to face a rearward position. The present invention relates to a chair with a chest support that can be used as a part.
[0002]
[Prior art]
Conventionally, a chair provided with a chest support capable of supporting a forward leaning posture in order to reduce the burden on the waist when sitting on a chair and performing work is known, and as a chair with a chest support, Is disclosed, for example, in Japanese Utility Model Laid-Open Publication No. 6-46556, and the one shown in FIGS. 10 and 11 is known.
[0003]
FIG. 10 is a front view of a conventional chair with a chest support, and FIG. 11 is a side view of the chair with a chest support shown in FIG. 10 in use. 10 and 11, a chair 1 has a seat 3 mounted above a leg 2 having casters 2a so as to be rotatable and height adjustable. One end of an L-shaped support 4 is supported above the leg 2 and below the seat 3, and the other end is arranged so as to be located on the front side of the seat 3. The support 4 is supported so as to rotate integrally with the seat 3. A mounting tube 5 is fitted on the upper end of the support 4 so as to be slidable in the vertical direction. Fixed at height.
[0004]
The breastplate 7 is formed in a substantially rectangular shape having a metal or wooden mounting plate whose surface is covered with a cushioning material such as urethane resin or the like and having a long side substantially the same length as one side of a substantially square seat. It is attached to the side surface of the attachment pipe 5 so as to be rotatable with respect to a horizontal axis. Further, the mounting tube 5 is configured to rotate around the support 4 by a predetermined angle together with the breastrest 7, and at one end, it is substantially parallel to the front of the seat 3, and at the other end. The part rotates to a position substantially orthogonal to the front part or to a position beyond the front part.
[0005]
[Problems to be solved by the invention]
However, in the above-mentioned conventional chair 1 with a chest support, the chest rest 7 has a substantially rectangular shape having a long side substantially the same length as one side of the seat, while the chest rest 7 is located on the front side of the seat. Is mounted horizontally in a side portion of the mounting tube 5 which rises substantially vertically from a portion corresponding to the height of the chest when seated, so that the mounting portion is substantially under the armpit of the user or As a result, the chest pad 7 and the attachment tube 5 may interfere with the movement of the upper limb during the work of the user. That is, the chest pad 7 and a part of the attachment tube 5 are used mainly for the work in the upper arm motion region in the shoulder joint or the forearm motion region in the elbow joint (region A surrounded by a broken line in FIGS. 10 and 11). Because of this, the upper limb of the user comes into contact with the chest pad 7 and a part of the attachment tube 5 during the work, which causes a problem that the work is hindered.
[0006]
Further, since the breastplate 7 is formed of a substantially rectangular flat plate, when it comes into contact with the chest of the user, the bulge of the breast (particularly the breast of a woman) is pressed, and long-term continuous work is performed. A problem arises that is difficult to do.
[0007]
The present invention has been made in view of the above circumstances, and has a leg, a seat rotatably supported above the leg, a breastplate for supporting a forward leaning posture on the chest, and a breastplate. A chair with a chest support having a support for supporting the chest, wherein the chest pad is formed to be narrower than the width of the chest, and the support is provided on one side of a front part of the seat. By providing a support arm extending from the upper arm to the chest, the chest and the support are arranged outside the exercise area of the upper limb required during work. It is an object of the present invention to provide a chair with a thoracic support, which can minimize the contact with the support portion and can improve the work efficiency of the user.
[0008]
Another object of the present invention is to provide a chest support having a chest support having a chest support for supporting a forward leaning posture on the chest and a support for supporting the chest support, and a chest support for use in a chair with a chest support. By forming the width of the breastrest narrower than the width of the breast, and providing a raised relief part on both sides of the breastrest to avoid contact with the bulge of the breast, the breastrest can be used by the user. Provided is a breastplate for use in a chair with a breast support, in which, when in contact with the chest, compression of the ridges of the chest (particularly, a woman's breast) is reduced or reduced, and the work can be performed comfortably for a long time. With the goal.
[0009]
[Means for Solving the Problems]
A chair with a chest support according to claim 1 supports a leg, a seat rotatably supported above the leg, a chest support for supporting a forward leaning posture on the chest, and the chest support. And a chest support having a support portion, wherein the chest pad is formed so that the width of the chest pad is narrower than the width of the chest, and the support portion is located on one side of a front part of the seat. It is characterized by having a support arm extending toward the chest.
[0010]
In the invention according to claim 1, the chest and the support are arranged outside the exercise area of the upper limb necessary for the work, so that the user's upper limb and the support are arranged during the work. As much as possible, it is possible to increase the efficiency of the work of the user.
[0011]
The chair with a chest support according to claim 2 is the chair with the chest support according to claim 1, wherein the support arm portion extends obliquely from one side of a front portion of the seat toward a chest. It is characterized by being an arm.
[0012]
In the invention according to claim 2, the support arm can be formed by forming an inclined arm extending obliquely from one side of the front part of the seat toward the chest toward the chest. Thus, the support arm can be easily manufactured.
[0013]
A chair with a chest support according to claim 3 is the chair with a chest support according to any one of claims 1 and 2, in which both sides of the breastrest avoid contact with the ridge of the chest. A raised relief portion is provided.
[0014]
According to the third aspect of the present invention, when the chest contact comes into contact with the user's chest, the compression of the bulge of the chest (particularly, the breast of a woman) is eliminated or reduced, and work can be performed easily for a long time. [0015]
The chair with a chest support according to claim 4 is the chair with the chest support according to claim 3, wherein the raised relief portion has a curved surface that curves inward on both sides of the breastrest. It is characterized by being formed by providing.
[0016]
In the invention according to claim 4, the raised relief portion can be formed by forming a curved surface that curves inward on both side portions of the chest, so that the raised relief portion can be formed. The breastplate having the raised relief portion can be easily manufactured.
[0017]
A chest support for use in the chair with a chest support according to claim 5, comprising a chest support having a chest support for supporting a forward leaning posture on the chest and a support portion for supporting the chest support. A breastplate used for a chair, wherein the width of the breastplate is formed to be narrower than the width of the breast, and a relief part for avoiding contact with the ridge of the breast on both sides of the breastplate. Is provided.
[0018]
According to the invention as set forth in claim 5, when the chest contact comes into contact with the chest of the user, the compression of the bulge of the chest (particularly the breast of a woman) is eliminated or reduced, and the work can be performed easily for a long time. It can be carried out.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be specifically described with reference to the drawings. FIG. 1 is a front view of a chair 10 with a chest support according to the present invention, FIG. 2 is a rear view, and FIG. 3 is a right side view.
[0020]
1 to 3, a seat 30 having a rotatable seat 31 is fixed to an upper end of a leg 20 of the chair 10 with a chest support, and a lower surface of the seat 30 is fixed by a fixing means 40. A support part 52 for supporting the breastplate 51 at an appropriate position is fixed.
[0021]
At the lower part of the leg portion 20, four support legs 22 project in a substantially cross shape in a plan view, and at the end of each of the support legs 22,. The chair 10 is movable. At the intersection of the support legs 22,..., A cylindrical support column 23 is vertically suspended upward. The support column 23 is separate from the support column 23 and has an inner diameter of the support column 23. The movable column 24 having an outer diameter that can be slid is stored. A cylindrical mounting body 25 is fixed to the upper portion of the moving column 24, and the mounting body 25 is fixed to the lower surface of the seat 30 by means such as screwing or welding. Therefore, the moving column 24 is moved in the axial direction (vertical direction in FIGS. 1 to 3) with respect to the supporting column 23, and the moving column 24 is pressed and fixed to the supporting column 23 by a fixing screw 26 provided on the supporting column 23. The height adjustment of the seat portion 30 is enabled by the above.
[0022]
The seat portion 30 includes a base 32 formed in a square shape by a metal plate or the like, and a square seat 31 that is rotatably attached to an upper portion of the base 32 and is slightly larger than the base 32. The upper surface of the seat 31 is covered with a cushion material. On the lower surface of the base 32, a support portion 52 for supporting a chest pad 51 described later at an appropriate position is fixed by fixing means described later.
[0023]
The support portion 52 is formed by bending a metal tube at several places, and is provided with a fixed arm portion 52a shorter than one side length of the base 32 and a continuous connection with the fixed arm portion 52a. A horizontal arm 52b that is bent at a substantially right angle in the horizontal direction with respect to the fixed arm 52a and extends along one side of the base 32; The upper arm 52c which is vertically bent at the front side and rises upward, the inclined arm 52d which is connected to the upper arm 52c and obliquely moves toward the chest, and which is horizontal from the inclined arm 52d. And a support arm 52e that is bent in the shape of a chest.
[0024]
The upright arm portion 52c is generally standing upward from one side of the front portion of the seat 31, and is slightly higher than the height of the thigh when the user is seated, specifically, It is formed so as to have a height of approximately 100 mm to 150 mm from the upper surface of the seat 31, and the skew arm portion 52d skewing toward the center of the chest is connected from there.
[0025]
In the present embodiment, the support arm extending from one side of the front portion of the seat 31 toward the center of the chest is formed as the skewing arm 52d that is inclined toward the center of the chest. The portion may be a curved arm (not shown) extending toward the center of the chest, and may extend from the upper end of the rising arm 52c once in the lateral direction and then toward the center of the chest. It may be formed as a support arm (not shown). In short, the support arm is arranged outside the exercise region of the upper arm in the shoulder joint or the exercise region of the forearm in the elbow joint (generally, the region A surrounded by a broken line in FIGS. 10 and 11) which is mainly used during work. It should just be formed like this.
[0026]
In the present embodiment, the support portion 52 is formed by bending a metal tube, but all or a part of each of the arm portions (52a to 52e) is connected as a separate member by welding or the like. 52 may be formed. Further, the support portion 52 may be formed of, for example, a plate body instead of the tube body. Further, the support portion 52 may be formed of a synthetic resin, and the material is not limited.
[0027]
FIG. 4 is a perspective view of an essential part showing a fixing structure of the support portion 52. 1 to 4, a cylindrical receiving portion 41 having a flange portion 43 at one end is fixed to one side of the lower surface of the base 32 by welding or the like by attaching bodies 42, 42, and the receiving portion is fixed. 41 is non-rotatably fixed to the mounting bodies 42, 42. The flange 43 is provided with three bolt holes 44 at an upper position and three bolt holes at a lower position opposed thereto. On the other hand, the fixed arm portion 52a of the support body 52 has an outer diameter slidable in the receiving portion 41, and has a predetermined length from the end of the fixed arm portion 52a (the fixed arm portion 52a is stored in the receiving portion 41). A flange 53 is provided at a position separated by the length). Bolt holes 54, 54 are penetrated at two predetermined positions facing each other into the flange 53, and bolts 45, 45 are inserted into the bolt holes 54, 54, and bolt holes 44 of the other flange 43 are inserted. , 44 are penetrated and fastened by nuts 46, 46 to fix the support portion 52 to the receiving portion 41. At this time, three flange holes 43 are penetrated at three positions facing each other. By selecting the bolt holes 44 through which the bolts 45 pass, the angle at which the support portion 52 is fixed can be set. Can be adjusted. By this angle adjustment, the position of the breastrest 51 is adjusted in the left-right direction in FIG.
[0028]
The breast plate 51 has a substantially drum-shaped front shape and is curved in both sides to form a protrusion relief portion 51c that can avoid contact with a breast protrusion such as a breast as much as possible. Then, a cushion material (not shown) is arranged on the upper surface of the back plate 51a formed in a substantially drum shape with a metal plate material, and is covered with a cloth material or the like to form a surface 51b.
[0029]
FIG. 5 is a schematic diagram showing the positional relationship between the breastplate 51 and the skeleton of a human body. The human skeleton shown in FIG. 5 is an average adult skeleton. In the figure, a rib cage 70 is a cage-shaped chest skeleton connected by a sternum 71 in the front, a thoracic vertebra 72 (12 pairs) in the rear, and ribs 73 (12 pairs) in between. The sternum 71 is a sternum. The handle 71a, the sternum body 71b, and the xiphoid process 71c are distinguished.
[0030]
As shown by the imaginary line in FIG. 5, the size of the chest pad 51 is approximately two to three times the width of the sternum body 71b, and the height (H) is the sternum. The body 71b is formed to have the same size as the length of the body 71b. More specifically, the size of the chest 51 is, for example, about 150 mm to 200 mm in width (W) and about 200 mm to 250 mm in height (H). It is formed in a size that can fit in. The supporting position of the breastrest 51 is, as indicated by the imaginary line in FIG. 5, the center in the width direction (left-right direction in FIG. 5) of the breastrest 51 is arranged on the median line of the human body and in the height direction. In the (up and down direction in FIG. 5), the chest pad 51 is arranged at a position where the sternum 71 (particularly, the sternum body 71b) can be supported, and supports the chest of the human body.
[0031]
FIG. 6 is an exploded perspective view showing a supporting structure of the breastplate 51, and FIG. 7 is a sectional view of a main part showing a state where the breastplate 51 is supported. With reference to FIGS. 6 and 7, a support structure of the breast pad 51 will be described.
[0032]
A vertically long rack plate 61 is fixed to the back surface of the back plate 51a of the chest pad 51 at the center in the width direction. On the surface of the rack plate 61, a plurality of v-shaped grooves are provided in the width direction, and on both sides of the rack plate 61, side plates 62, 62 having elongated holes formed in the longitudinal direction are erected. are doing. On the other hand, a mounting base 64 is fixed to the peripheral surface of the support arm 52e against the chest of the support portion 52. The mounting base 64 is provided with two rectangular support plates 65 penetrating through the bolt holes 66. Attachment is made at a predetermined interval so that 66 and 66 face each other. Further, a protruding plate 67 protruding forward from the support plate 65 is mounted between the support plates 65 of the mounting base 64. The protruding plate 67 is formed of a flexible metal or synthetic resin plate, and has a v-shaped tip.
[0033]
Then, the chest pad 51 is lifted to an appropriate height position, and at that height position, the tip of the protruding plate 67 and the groove of the rack plate 61 are engaged, and the butterfly bolt 68 is inserted into the slot 63. And it is made to penetrate the said bolt hole 66, and is fastened with the nut 69. As shown in FIG. 7, in a state where the chest pad 51 is supported, the tip of the protruding plate 67 is engaged with the groove of the rack plate 61, and the bolts 68 and the nut 69 are used to connect the side plates 62, 62. Since the support plates 65, 65 and the contact surfaces between the support plates 65, 65 on both side surfaces of the protruding plate 67 are pressed, they can be supported at a desired height position. When the bolt 68 is slightly loosened from this state, the tightening of the support plate 65 with respect to the protruding plate 67 is slightly loosened, and the protruding plate 67 has flexibility. The bolt 68 can be swung in the direction indicated by the arrow in FIG. The range of the swing can be set within a range allowed by the gap S between the tip of the side plate 62 and the mounting base 64. Therefore, if the gap S is increased, the swing range is increased accordingly.
[0034]
Further, when the bolt 68 is further loosened, the tightening of the support plate 65 with respect to the protruding plate 67 is substantially eliminated, and the protruding plate 67 can flex freely. Therefore, in a state where the bolt 68 is completely loosened, the breastplate 51 can be moved up and down in a state where the bolt 68 is inserted into the long hole 63.
[0035]
The case of using the chair 10 with a chest support member configured as described above will be described with reference to FIGS. 8 and 9. FIG. 8 is a side view showing a use state, and FIG. 9 is a side view showing a state in which the breastplate 51 is used as a backrest.
[0036]
When using the chair 10 with a chest support, the user first loosens the fixing screw 26, adjusts the height of the seat 31 to a desired position, and then tightens the fixing screw 26 to secure the seat. Adjust the height. Next, in order to set the angle of the support portion 52 to a desired angle, an appropriate bolt hole is selected from the three bolt holes 44 provided at the upper and lower portions of the flange portion 43, and the bolt 45 and the nut 46 are tightened. In this way, the support portion 52 is fixed at a desired angle. Then, the user sits on the side of the chair 10 with a chest support (in the side view shown in FIG. 8, the user sits backward). At this time, since the seat 31 is rotatably attached to the base 32, the seat back 51 rotates about 90 degrees in a certain direction in the seated state (in the side view shown in FIG. When the user faces the seat and rotates about 90 degrees clockwise), the chest support 50 is fixed to the base 32 and does not rotate with the seat, and the chest support 51 of the chest support 50 is used. Located in front of the person.
[0037]
Then, the wing bolt 68 is loosened, and the chest pad 51 is moved up and down so that the chest pad 51 is at a height near the sternum 71b of the user, and the wing bolt 68 is tightened at a desired height position. The breastplate 51 is fixed to the support part 52. When the user performs an office work or a flow work in a manufacturing process, the user should support the chest of the user with the chest pad 51 and maintain the good posture to perform the various operations as described above. In addition, the size of the breastrest 51 is formed so as to fit within the width and height of the rib cage 70, and the supporting arm (the inclined arm 52d) is used as a shoulder mainly used during work. Since it was formed so as to be located outside the exercise region of the upper arm in the joint or the exercise region of the forearm in the elbow joint (generally, the region A surrounded by a broken line in FIGS. 10 and 11), the upper limb of the user during the operation was There is no (or significantly less) contact with the breastplate and the support.
[0038]
Next, when the chest support 51 of the chair 10 with a chest support is used as a backrest, that is, when the chair 10 with a chest support is used as a normal chair, the seating position from the seating position in FIG. In this state, the seat 31 is rotated 180 degrees. At this time, since the chest support 50 is fixed to the base 32, the chest support 50 does not rotate with the seat, and the chest pad 51 of the chest support 50 is located behind the user. Then, as shown in FIG. 5, both upper ends of the breastrest 51 are located exactly between the shoulder blades, so that the back of the user can be favorably supported.
[0039]
In the present embodiment, the support portion 52 is fixed to the lower surface of the seat 31, but may be fixed to the upper portion of the leg portion 20. In this case, the seat portion 30 does not need to be constituted by the seat 31 and the base 32, and the seat 31 may be rotatably attached to the attachment body 25 at the upper end of the leg portion 20.
[0040]
【The invention's effect】
A chair with a chest support according to claim 1 supports a leg, a seat rotatably supported above the leg, a chest support for supporting a forward leaning posture on the chest, and the chest support. And a chest support having a support portion, wherein the chest pad is formed so that the width of the chest pad is narrower than the width of the chest, and the support portion is located on one side of a front part of the seat. In the invention according to the first aspect, since the support arm extending toward the chest is provided, the chest and the support are arranged outside the exercise area of the upper limb required at the time of work. In addition, it is possible to prevent the upper limb of the user from touching the breastrest and the support part as much as possible, thereby improving the efficiency of the user's work.
[0041]
The chair with a chest support according to claim 2 is the chair with the chest support according to claim 1, wherein the support arm portion extends obliquely from one side of a front portion of the seat toward a chest. Since the arm is an arm, in the invention according to claim 2, the support is formed by forming an inclined arm extending obliquely from one side of the front of the seat toward the chest toward the chest. Since the arm can be formed, the support arm can be easily manufactured.
[0042]
A chair with a chest support according to claim 3 is the chair with a chest support according to any one of claims 1 and 2, in which both sides of the breastrest avoid contact with the ridge of the chest. According to the third aspect of the present invention, when the chest contact comes into contact with the user's chest, the compression of the raised portion of the chest (particularly the breast of a woman) is eliminated. Or, it can be reduced and work can be performed easily for a long time.
The chair with a chest support according to claim 4 is the chair with the chest support according to claim 3, wherein the raised relief portion has a curved surface that curves inward on both sides of the breastrest. In the invention according to claim 4, the protrusion relief portion is formed by providing a curved surface that curves inward on both sides of the breastplate. Since it can be formed, the breastplate having the raised relief portion can be easily manufactured.
[0044]
A chest support for use in the chair with a chest support according to claim 5, comprising a chest support having a chest support for supporting a forward leaning posture on the chest and a support portion for supporting the chest support. A breastplate used for a chair, wherein the width of the breastplate is formed to be narrower than the width of the breast, and a relief part for avoiding contact with the ridge of the breast on both sides of the breastplate. According to the invention described in claim 5, when the chest contact comes into contact with the chest of the user, the compression of the bulge of the chest (particularly, the breast of a woman) is eliminated or reduced, and Work can be done easily.
[Brief description of the drawings]
FIG. 1 is a front view of a chair 10 with a chest support according to the present invention.
FIG. 2 is a rear view of the chair with a chest support 10 according to the present invention.
FIG. 3 is a right side view of the chair 10 with a chest support according to the present invention.
FIG. 4 is a perspective view of a main part showing a fixing structure of the support portion 52.
FIG. 5 is a schematic diagram showing a positional relationship between the breastplate 51 and a skeleton of a human body.
FIG. 6 is an exploded perspective view showing a support structure of the chest pad 51.
FIG. 7 is a sectional view of a main part showing a state in which the chest pad 51 is supported.
FIG. 8 is a side view showing a use state of the chair with a chest support 10 according to the present invention.
FIG. 9 is a side view showing a state where the breastrest 51 is used as a backrest.
FIG. 10 is a front view of a conventional chair with a chest support.
11 is a side view of the chair with a chest support shown in FIG. 10 in a used state.
[Explanation of symbols]
Reference Signs 20 leg 31 seat 51 chest support 52 support 50 chest support 52d support arm (oblique arm)

Claims (5)

Legs and
A seat rotatably supported above the legs,
A chest support having a chest support for supporting the forward leaning posture on the chest and a support for supporting the chest support,
With
The breastplate is formed such that the width of the breastplate is narrower than the width of the breast, and the support part includes a support arm extending from one side of a front part of the seat toward the breast. Chair with chest support. The chair with a chest support according to claim 1, wherein the support arm is an inclined arm that extends obliquely from one side of a front portion of the seat toward the chest. The chair with a chest support according to any one of claims 1 and 2, wherein a protrusion relief portion is provided on both sides of the chest for avoiding contact with the protrusion of the chest. The chair with a chest support according to claim 3, wherein the raised relief portion is formed by providing a curved surface that curves inward on both sides of the breastrest. A chest support for use in a chair with a chest support having a chest support that supports a forward leaning posture on the chest and a chest support that supports the chest support,
A chest support, wherein the width of the chest is made narrower than the width of the chest, and a bulge relief portion is provided on both sides of the chest to avoid contact with the ridge of the chest. Chest pad for body chairs.

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