JP2017012595A - Table device and chair device including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a table device including a table with an orientation-changeable upper face and a table with an orientation-fixed upper face, inhibiting lateral protrusion from the tables, and being non-obstructive for persons in the vicinity, and a chair device including the table device.SOLUTION: A table device 20 includes: a table body 24 having a first top board 250 and a second top board 240; a table support part 23 for supporting the table body 24; and a base part 21 for supporting the table support part 23 in the manner of a cantilever. The first top board 250 is supported by the table support part 23 rotatably about a tilt shaft provided on the table support part 23 so as to change the orientation of the upper face, while the second top board 240 is juxtaposed with the first top board 250 in an extending direction of the table support part 23, and supported by the table support part 23 with the orientation of the upper face fixed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a table device and a chair device including the table device.

  Conventionally, there are cases where a patient takes a reading or eating and drinking while resting in a reclining posture on a bed or chair that can be reclining in a hospital. At this time, a table having a top plate disposed above a bed or the like and on which books, beverages, meals, and the like can be placed on the top plate is known.

  As such a table, a pair of legs installed on the floor, an end table plate supported by each leg, and a substrate connecting one end table plate and another end table plate An overbed table including a undulating table plate rotatably supported by a substrate is known. This overbed table is used in such a manner that each leg portion is installed on each side of the bed and the end table plate and the undulating table plate are arranged above the bed. The end table plate is fixed to the leg portion so that the upper surface faces upward, and the direction of the upper surface can be changed by rotating the undulating table plate (see Patent Document 1 below). This overbed table is highly convenient because it can be used by changing the orientation of the upper surface of the undulating table plate according to the posture of the user.

  In addition, a chair base installed on the floor, a chair supported by the chair base, a column attached to the chair base, extending upward, and disposed on the side of the seat of the chair, and supported by the column There has been proposed a workstation including an attached table and a work table. The attached table is arranged on the side of the chair, and a printer is installed on the upper surface. The orientation of the upper surface of the work table can be changed and is arranged above the chair (see Patent Document 2 below).

Japanese Patent No. 2845317 Japanese Patent No. 3590060

  However, in the overbed table described in Patent Document 1, the pair of leg portions are disposed on both sides of the bed, so that a person working on a patient near the bed can perform both sides of the table. There is a problem in that the pair of leg portions arranged in the way becomes an obstacle.

  Moreover, in the workstation described in Patent Document 2, the work table is arranged above the chair, but the attached table is arranged on the side of the chair. For those who work on the side, there is a problem that the attached table becomes an obstacle.

  The present invention has been made in view of the above circumstances, and includes a table in which the orientation of the upper surface can be changed and a table in which the orientation of the upper surface is fixed. It is intended to provide a table device and a chair device provided with the table device that are less likely to be an obstacle to the user.

In order to achieve the above object, the present invention employs the following means.
That is, the table device according to the present invention includes a table main body having a first top plate and a second top plate, a table support portion that supports the table main body, and a base portion that supports the table support portion in a cantilever manner. The first top plate is supported by the table support portion so as to be able to change the orientation of the upper surface by rotating around a tilting shaft provided in the table support portion, and the second top plate is The table support portion is arranged side by side with the first top plate in a direction in which the table support portion extends, and is supported by the table support portion with the orientation of the upper surface fixed.

  In the table device configured as described above, the table main body is supported by the table support portion supported in a cantilever manner by the base portion. The table main body has a first top plate that rotates about a tilting shaft provided in the table support portion and is supported by the table support portion so that the orientation of the upper surface can be changed. Furthermore, the table body has a second top plate that is arranged side by side with the first top plate in the direction in which the table support portion extends, and is supported by the table support portion with the orientation of the upper surface fixed. That is, the first top plate and the second top plate are arranged along the direction in which the table support portion extends in a cantilevered manner from the base portion. When the user faces the front of the first top plate and the second top plate, the base portion is arranged on the side of the user. That is, since one base portion is configured to support both the first top plate and the second top plate via the table support portion, the protrusion from these tables to the side (side of the table device) is suppressed. Therefore, for those who work around the table device or pass by the table device, the table device is less likely to get in the way.

  In the table device according to the present invention, it is preferable that the tilting shaft is arranged along a direction in which the table support portion extends.

  In the table device configured as described above, since the tilting shaft is arranged along the direction in which the table support portion extends, the first top plate rotates around the direction in which the table support portion extends. Therefore, even when the first table is rotated around the table support portion, the first table and the second table are well aligned along the table support portion.

  In the table device according to the present invention, the first top plate is provided on a distal end side of the table support portion, and the second top plate is provided on a proximal end side of the table support portion. May be.

  In the table device configured as described above, the second top plate is provided on the base end side of the cantilevered table support portion, so that the user can fix the top surface of the second top plate. When an article such as a beverage or food is placed thereon, the second top plate can stably support the article.

  In the table device according to the present invention, the first top plate and the second top plate may be arranged with a gap between each other.

  In the table device configured as described above, since there is a gap between the first top plate and the second top plate, when the first top plate is rotated around the tilting axis, It is possible to prevent the article or the like between the top plate and the second top plate from being sandwiched.

  Further, in the table device according to the present invention, a fall prevention portion that can rise from the upper surface of the first top plate is provided on at least one edge portion of the first top plate in a direction orthogonal to the tilt axis. It may be made to be.

  In the table device configured as described above, a fall prevention unit is provided on at least one edge of the first top plate in the direction orthogonal to the tilt axis. Therefore, in a state where the first top plate is inclined so that one edge portion is located below the other edge portion, the article placed on the first top plate is the first top plate. Even if the product moves downward (in the side of one edge), the article is supported by the fall prevention part provided in the one edge, and is prevented from falling from the first top plate.

  In addition, the table device according to the present invention may include a switching unit that can switch between a state in which the first top plate can be rotated around the tilt axis and a state in which the first top plate cannot be rotated.

  In the table device configured as described above, the switching unit can be switched between a state in which the first top plate can be rotated around the tilting axis and a state in which the first top plate cannot be rotated. be able to.

  In the table device according to the present invention, the table support portion may be provided with a rotation mechanism that allows the first top plate to rotate about the tilt axis by a predetermined angle.

  In the table device configured as described above, the table support portion is provided with a rotation mechanism that allows the first top plate to rotate by a predetermined angle around the tilt axis. Can be changed by a predetermined angle. Therefore, the upper surface of the first top plate can be oriented in a desired direction according to the user's posture, preferences, and the like, which is highly convenient.

  In the table device according to the present invention, the base portion may have a swing shaft extending in the vertical direction, and the table support portion may be rotatable about the swing shaft.

In the table apparatus configured as described above, the table support portion can rotate around the swinging shaft extending in the vertical direction, so the first top plate and the second top plate supported by the table support portion are the table. It rotates around the swing axis together with the support. Therefore, depending on the mode of use, when not in use, etc., the first top plate and the second top plate are rotated around the swing axis, and the horizontal direction of the first top plate and the second top plate is Since the position can be changed, convenience is high.
In addition, since the second top plate whose upper surface direction is fixed is provided on the base end side of the table support portion extending from the base portion, even if the table support portion rotates around the swing axis, the second top plate Centrifugal force acting on the top plate can be suppressed. Therefore, the second top plate can stably support the article.

  Moreover, the chair apparatus which concerns on this invention is equipped with the chair main body which can arrange | position the said table main body of the said table apparatus upwards, and has a seat part on which a user sits.

In the chair device configured as described above, the first top plate and the second top plate of the table device are disposed above the seat portion on which the user is seated, so that the user is seated on the seat portion. Thus, the first top plate and the second top plate can be used.
In addition, if the base portion is arranged on one side of the chair device, members supporting the table support portion are not arranged on the portion other than the one, so the person who works around the chair device or passes by the side Therefore, the chair device is not likely to get in the way.

  According to the table device according to the present invention and the chair device provided with the table device, the table device includes a table whose upper surface direction is changeable and a table whose upper surface direction is fixed, and suppresses lateral protrusion from these tables, It is difficult for people around you to get in the way.

It is a perspective view of the chair device concerning one embodiment of the present invention. It is a front view of the chair device concerning one embodiment of the present invention. It is a top view of the chair apparatus which concerns on one Embodiment of this invention. It is the arrow line view which looked at FIG. 2 from IV direction. It is a top view of the table main body of the chair apparatus which concerns on one Embodiment of this invention. It is AA sectional drawing of FIG. 5 for demonstrating the fall prevention part and rotation mechanism of the chair apparatus which concern on one Embodiment of this invention. It is a perspective view of the state of the position where the 1st top plate of the chair device concerning one embodiment of the present invention turned the upper surface right above. It is a perspective view in the state where the 1st top plate of the chair device concerning one embodiment of the present invention exists in the position where the upper surface turned to the slanting upper part.

Hereinafter, as an embodiment of the present invention, a chair which is an example of a chair device will be described.
FIG. 1 is a perspective view of a chair device according to an embodiment of the present invention. FIG. 2 is a front view of the chair device according to the embodiment of the present invention. FIG. 3 is a top view of the chair device according to the embodiment of the present invention. FIG. 4 is an arrow view of FIG. 2 viewed from the IV direction.

  Embodiments of the present invention will be described below with reference to the drawings. In the following description, the front / rear, left / right, and up / down directions are based on the direction viewed from the seated person who is seated with his back on the back of the chair. Further, “front” of the seated person is indicated by an arrow FR in the figure, “upward” is indicated by an arrow UP in the figure, and “left” is indicated by an arrow LH in the figure.

  As shown in FIGS. 1 to 4, the chair device 1 of the present embodiment is a reclining chair used, for example, for medical treatment or nursing care, and a seated person can take various postures even when used for a long time. For example, the seated person can arbitrarily adjust the posture and position of each part of the chair, for example, by electric power.

  The chair device 1 includes a frame-shaped base frame 2 installed on the floor surface F, and a chair body 3 supported by the base frame 2 so as to be movable up and down. The chair body 3 includes a seat body (seat part) 4, a backrest 5, a lower leg support part 6, a left elbow rest 7L, and a right elbow rest 7R.

  The seat body 4 forms a substantially horizontal seating surface 8 (upper surface) having a rectangular shape in plan view. A left side plate 9L and a right side plate 9R are disposed on the left and right sides of the seat body 4, respectively. Each of the left side plate 9L and the right side plate 9R is formed in a parallelogram shape with the upper side displaced forward in a side view. The seat body 4 is disposed between the upper side portions of the left side plate 9L and the right side plate 9R. Between the front side portions of the left side plate 9L and the right side plate 9R inclined forward, the lower leg receiving portion 6 in the retracted position is disposed. The seat body 4, the left side plate 9 </ b> L, the right side plate 9 </ b> R, and the lower leg receiving portion 6 form a box-shaped mechanism accommodating portion 10. Various drive mechanisms such as an elevating device that elevates and lowers the chair body 3 and a reclining mechanism that reclines the backrest 5 are accommodated in the mechanism accommodating portion 10 (all not shown).

  Outside the left side plate 9L and the right side plate 9R, the support plates 11 of the left elbow rest 7L and the right elbow rest 7R are arranged so as to overlap in a side view. The support plate 11 is formed in a parallelogram shape with the upper side displaced forward in a side view. A substantially horizontal elbow rest main body 12 is supported on the upper side of the support plate 11. The left elbow rest 7L and the right elbow rest 7R including the support plate 11 and the elbow rest main body 12 can be moved up and down along a direction inclined forward with respect to the vertical direction. Specifically, the left elbow rest 7 </ b> L and the right elbow rest 7 </ b> R raise the elbow rest main body 12 above the seat surface 8 in a side view by the operation of the drive mechanism in the mechanism housing portion 10, and The ascending position where the front end position is advanced until it becomes equal to the front end position of the seat body 4, the elbow rest main body 12 is lowered near the seat surface 8 in a side view, and the front end position of the elbow rest main body 12 is set to the position of the seat body 4. It is possible to move up and down between a lowered position that is retracted backward from the front end position.

  The elbow rest main body 12 is formed in a plate shape having a predetermined thickness in the vertical direction. The elbow rest main body 12 is formed so that the front width dimension (the horizontal dimension in the chair device 1) is wider than the rear width dimension.

  As shown in FIG. 3, in plan view, each elbow rest main body 12 includes a linear portion 12A formed linearly along the corresponding left side plate 9L and right side plate 9R, and a front side from the front end of the linear portion 12A. The front curved portion 12B that is curved so as to swell toward the front and the front curved portion 12B are continuous, and are curved with a radius of curvature larger than the radius of curvature of the front curved portion 12B, and are continuous with the rear end of the linear portion 12A. And an outer curved portion 12C. The linear portion 12A, the front bending portion 12B, and the outer bending portion 12C are integrally formed.

  The wristband main body 12 is provided with a wristband 12W. The wristband 12W is disposed along the upper surface 12T of the elbow rest main body 12, the outer curved portion 12C, and the lower surface 12D of the elbow rest main body 12 from the linear portion 12A. The wristband 12W is disposed on the upper surface 12T so as to be inclined with respect to the left-right direction of the chair device 1 so as to gradually go rearward from the linear portion 12A toward the outer curved portion 12C.

  A slight gap is formed between the wristband 12W and the upper surface 12T of the elbow rest main body 12. The seated person who puts the upper arm on the elbow rest main body 12 can hold the wristband 12W by putting a hand or a finger into the gap. The wristband 12W is fixed to the lower surface 12D of the elbow rest main body 12.

  As shown in FIGS. 1 and 4, the crus receiving portion 6 is stored between the front side portions of the left side plate 9 </ b> L and the right side plate 9 </ b> R at the front lower side of the seat body 4 (see the solid line shown in FIGS. 1 and 4). The same shall apply hereinafter) and a leg-up position (refer to the two-dot chain line shown in FIGS. 1 and 4 shown in FIGS. 1 and 4; the same shall apply hereinafter) disposed substantially horizontally in front of the seat body 4. The crus receiving part 6 is supported by the front part of the mechanism accommodating part 10, and can be tilted between the storage position and the leg-up position by the operation of the drive mechanism in the mechanism accommodating part 10.

  The backrest 5 has an upright position (see the solid line shown in FIGS. 1 and 4; the same applies hereinafter) standing up behind the seat body 4 and a reclining position (see FIGS. 4) (refer to the two-dot chain line shown in FIG. 4). The backrest 5 is supported by the rear portion of the mechanism housing portion 10 and can tilt between the standing position and the reclining position by the operation of the reclining mechanism in the mechanism housing portion 10.

The backrest 5 extends above the backrest surface 13 (front surface) that supports the back of the seated person, and the headrest 14 is integrally formed above the backrest surface 13. The front surface of the headrest 14 is a head support surface 16, and a position immediately before the head support surface 16 is a head position hp of the seated person.
The left and right side portions of the headrest 14 are integrally formed with a pair of left and right side shielding portions 15 that stand up frontward and left and right. Accordingly, the field of view of the side of the head of the seated person is appropriately blocked, and the line of sight from the same direction is blocked appropriately. The left and right side shielding parts 15 incorporate a speaker 17 that emits sound toward the head position hp. The left and right side shielding portions 15 and the monitor device 34 disposed in front of the headrest 14 are combined to form a good private space with a high shielding feeling from the outside.

The chair device 1 is configured as a chair by setting the backrest 5 to the standing position and the lower leg receiving portion 6 to the retracted position. At this time, the elbow rest 7 is in the raised position, and the elbow and forearm of the seated person in the sitting posture are placed on the elbow rest 7 so that medical practice or the like can be continued.
Further, the chair device 1 is configured as a bed in which the seat body 4, the backrest 5, and the crus receiving part 6 are connected substantially horizontally by setting the backrest 5 to the reclining position and the crus receiving part 6 to the leg-up position. It becomes. At this time, the elbow rest 7 is in the lowered position, and the elbow and forearm of the seated person in the lying position are placed on the elbow rest 7 so that medical practice and the like can be continued.

  As described above, the chair device 1 can change the posture of the seated person to various postures from the sitting posture to the lying posture. The backrest 5, the lower leg receiving part 6 and the elbow rest 7 may individually be arbitrarily adjusted. However, when a medical act such as dialysis or infusion treatment is performed on the forearm of the seated person, the backrest 5 It is preferable that the reclining and the raising / lowering of the elbow rest 7 are performed in conjunction with each other. Since medical practice such as dialysis takes a long time, it is a burden for the patient (sitting person) to keep the same posture for a long time. Therefore, the burden on the patient can be reduced by changing the posture of the patient's body by adjusting the position of the backrest 5 or the like.

  The chair device 1 further includes a monitor support device 30 supported on the back side of the backrest 5 of the chair body 3 and a table device 20 supported on the outside of the right side plate 9R of the chair body 3.

  The monitor support device 30 includes a support arm 32 in which a lower portion 32a (base portion) is rotatably supported by a support bracket 31 fixed to the back surface of the backrest 5, and a monitor joint 33 on the distal end side of the support arm 32. And a monitor device 34 to be supported. The support arm 32 passes above the head position hp in front of the headrest 14 from the support bracket 31 to the front side of the head position hp, and supports the monitor device 34 via the monitor joint 33. The monitor joint 33 supports the monitor device 34 so as to be tiltable and rotatable with two axes along the surface direction of the rectangular plate-shaped monitor device 34 and one axis along the normal direction.

Hereinafter, details of the table device 20 will be described.
The table device 20 includes a base portion 21 attached to the right side plate 9R, an extension arm (table support portion) 23 supported by the base portion 21 in a cantilever manner, and a fixed top plate (first plate) supported by the extension arm 23. A table main body 24 having a second top plate 240 and a movable top plate (first top plate) 250.

  As shown in FIGS. 2 and 4, the base 21 has an upward arm 210 provided on the right side plate 9 </ b> R and extending upward in the present embodiment. The base 21 may be attached to the left side plate 9L. The base 21 is preferably attached to a side that is convenient for the seated person or a side that does not hinder the work of the medical practitioner.

  An attachment plate 9T is attached to the right side plate 9R with a screw or the like (not shown). A support portion 9S is provided on the mounting plate 9T. The support portion 9S is formed with a through-hole 9K that faces in the vertical direction. The lower part of the upward arm 210 is inserted into the through hole 9K. The upward arm 210 is attached to the support portion 9S while being rotatable about the axial direction with the vertical direction as the axial direction. The upward arm 210 is attached to the support portion 9S by a known structure such as fitting.

  The upward arm 210 includes a first upward portion 211 extending substantially directly above the mounting plate 9T and an upper end portion of the first upward portion 211 in a state where the table main body 24 is disposed above the seat body 4. It has a skew part 213 formed so as to gradually extend forward and to the right as it goes, and a second upward part 215 that extends substantially directly from the upper end of the skew part 213.

  A curved first curved portion 212 is formed between the first upward portion 211 and the skewed portion 213. A curved second curved portion 214 is formed between the skewed portion 213 and the second upward portion 215. The first upward portion 211, the first curved portion 212, the skew portion 213, the second curved portion 214, and the second upward portion 215 are integrally formed of metal or the like.

  The upward arm 210 is rotatable about the swing axis J1 with the extending direction of the first upward portion 211, that is, the vertical direction as the swing axis J1. As a result, the table body 24 supported by the extending arm 23 extending from the base portion 21 is positioned above the seat body 4 (see the solid line shown in FIGS. 2 and 3; the same applies hereinafter), and the seat body 4. It is possible to move between the retracted position (see the two-dot chain line shown in FIGS. Further, the skew portion 213 is formed radially outward so as to move away from the swing axis J1 as it goes from the lower portion to the upper portion with respect to the rotation.

FIG. 5 is a top view of the table body of the chair device according to the embodiment of the present invention.
As shown in FIG. 5, the connecting arm 22 is connected to the upper end portion of the second upward portion 215 of the upward arm 210. The connecting arm 22 extends along the lower surface of the fixed top plate 240. The distal end portion of the connecting arm 22 is connected to an attachment frame 249 attached to the back surface of the fixed top plate 240. The connecting arm 22 is disposed so as to extend in the left-right direction with the table main body 24 in the use position.

  The mounting frame 249 has a top plate support plate 249A screwed to the back surface of the fixed top plate 240 with a screw, and is suspended downward from the top plate support plate 249A. Arm support plate 249B. As described above, the connecting arm 22 supports the fixed top plate 240 via the mounting frame 249.

  One end portion of the extension arm (table support portion) 23 is fixed to the arm support plate 249B by a screw or the like (not shown). In a state where the table main body 24 is in the use position, the extension arm 23 is disposed so as to extend in the left-right direction at a position behind the connection arm 22.

  A pair of attachment frames 259 are attached to the lower surface of the movable top plate 250 so as to be separated in the width direction of the movable top plate 250 (left and right direction when the table main body 24 is in the use position). Each mounting frame 259 has a top plate support plate 259A that is screwed to the back surface of the movable top plate 250, and an arm support plate 259B that hangs downward from the top plate support plate 259A and rotatably supports the extension arm 23. ,have.

  The arm support plate 259B is formed with a through hole 259K that penetrates the movable top plate 250 in the width direction. An extending arm 23 is rotatably inserted into the through hole 259K. An attachment frame 259 through which the extension arm 23 is inserted and a movable top plate 250 to which the attachment frame 259 is attached by the rotation mechanism 26 described later are in the extending direction of the extension arm 23, that is, the table main body 24 is in the use position. In this state, the left / right direction can be rotated around the tilt axis J2 with the tilt axis J2 being used, and the movable top plate 250 can change the orientation of the upper surface 250A. On the other hand, the orientation of the upper surface 240A of the fixed top plate 240 arranged side by side with the movable top plate 250 is fixed.

  As described above, the fixed top plate 240 is provided on the base end side (the swing axis J1 side) of the extension arm 23, and the movable top plate 250 is provided on the front end side of the extension arm 23. A gap S is formed between the fixed top plate 240 and the movable top plate 250. In the present embodiment, the dimension of the gap S (the dimension in the left-right direction when the table main body 24 is in the use position) is about 25 mm.

  Moreover, the fixed top plate 240 and the movable top plate 250 are disposed above the elbow rest 7 in the raised position. A gap T (see FIG. 2) is formed between the fixed top plate 240 and the movable top plate 250 and the elbow rest 7 when viewed from the front.

Next, the shapes of the fixed top plate 240 and the movable top plate 250 will be described in detail.
As shown in FIGS. 3 and 5, the fixed top plate 240 is continuous with the inner peripheral edge 241 and the inner peripheral edge 241 on the inner peripheral side with respect to the rotational direction around the swing axis J <b> 1, and is fixed in the rotational direction. The front side edge 242 on the use position side, the front side edge 242 and the straight side edge 242 extend linearly, and the movable top plate 250 is opposed to the straight edge 243 and the straight edge 243. And a rear edge 244 which is a retreat position side. The inner peripheral edge 241 is formed in a curved shape.

  At the retracted position, the inner peripheral edge 241 is arranged to face the chair body 3 (see FIG. 3). In the retracted position, the inner peripheral edge 241 is disposed on the distal end side of the elbow rest main body 12 (see FIG. 3) in plan view, and is disposed along the wristband 12W. By forming the inner peripheral edge 241 in a curved shape, it is possible to suppress contact with the hand of the seated person who placed the upper arm on the elbow rest main body 12. Further, since the inner peripheral edge portion 241 is formed in a curved shape and does not have a shape with a sharp angle such as a right angle, it is possible to suppress a sense of resistance when the seated person's hand contacts.

  The movable top plate 250 is continuous with the outer peripheral edge 251 that is on the outer peripheral side with respect to the rotation direction around the swing axis J1, the first corner 252 that is continuous with the outer peripheral edge 251, and the first corner 252. And a back side edge portion 253 which is a retreat position side in the rotation direction.

  Furthermore, the movable top plate 250 is continuous with the back side edge portion 253 and extends linearly. The movable top plate 250 is continuous with the straight edge portion 254 facing the fixed top plate 240 and the straight edge portion 254. And a second corner portion 256 connecting the front side edge portion 255 and the outer peripheral edge portion 251. The first corner 252, the outer peripheral edge 251, and the second corner 256 are formed in a continuous curved shape.

  As shown in FIG. 3, the first corner 252 is curved so that the rotation locus K2 around the swing axis J1 is closer to the inner periphery than the rotation locus K1 around the swing axis J1 of the outer peripheral edge 251. It is formed in a shape. Further, the first corner 252 is formed so that the radius of curvature is larger than the radius of curvature of the second corner 256.

  Further, a drop prevention portion 258 that rises from the upper surface 250A of the movable top plate 250 is provided at the front side edge portion 255 (one edge portion of the movable top plate 250 in the direction orthogonal to the tilting axis J2).

FIG. 6 is a cross-sectional view taken along line AA of FIG. 5 for explaining a fall prevention unit and a rotation mechanism of the chair device according to the embodiment of the present invention.
As shown in FIGS. 5 and 6, the fall prevention portion 258 includes a mounting portion 258 </ b> A attached to the lower surface 250 </ b> B of the movable top plate 250 by screws (not shown) and the movable top plate 250 from the end of the mounting portion 258 </ b> A. And a standing portion 258B that rises along the front side edge portion 255. The standing portion 258 </ b> B extends above the upper surface 250 </ b> A of the movable top plate 250.

Next, an example of the rotation mechanism 26 that rotates the movable top plate 250 will be described.
The rotating mechanism 26 includes a lever (switching portion) 261 provided on the front side edge portion 255 side of the movable top plate 250, a pin 262 that is connected to the lever 261, and whose tip portion engages with the extending arm 23, and a pin And an urging portion 263 that urges 262 toward the extending arm 23. The extension arm 23 is fitted in an outer pipe 266 provided on the arm support plate 249B of the mounting frame 249. The outer pipe 266 is formed in a tubular shape, and extends in the left-right direction with the table body 24 in the use position. In the present embodiment, the inside of the outer pipe 266 is the aforementioned through hole 259K.

  The extension arm 23 is formed in a tubular shape, and a plurality of slits 23S are formed at intervals in the circumferential direction. The tip of the pin 262 connected to the lever 261 is engaged with the slit 23S. In this state, the movable top plate 250 is not rotatable about the tilt axis J2.

  When the user pulls the lever 261 forward, the tip of the pin 262 moves in a direction (the lever 261 side) to be removed from the slit 23S, and the engagement of the extension arm 23 with the slit 23S is released. As a result, the tip of the pin 262 can slide along the outer peripheral surface of the extending arm 23, whereby the movable top 250 can be rotated about the tilting axis J2. The movable top plate 250 rotates about the tilt axis J2 and can be stopped at an angle corresponding to the interval between the slits 23S.

FIG. 7 is a perspective view of a state in which the first top plate of the chair device according to the embodiment of the present invention is in a position where the upper surface is directed directly upward. FIG. 8 is a perspective view showing a state in which the first top plate of the chair device according to the embodiment of the present invention is in a position in which the upper surface is directed obliquely upward.
As described above, when the user pulls the lever 261 toward the front, releases the engagement between the distal end portion of the pin 262 and the slit 23S of the extending arm 23 and applies a load to the movable top plate 250, the movable top plate 250 is moved. The plate 250 rotates. For example, when the user applies a load in a direction to lower the front side edge portion 255 side of the movable top plate 250 from a state in which the upper surface 250A of the movable top plate 250 faces directly above as shown in FIG. Thus, the movable top plate 250 is inclined so that the upper surface 250A is directed rearward and upward. When the user returns the lever 261 to the original position when the desired inclination is reached, the urging force of the urging portion 263 (see FIG. 6; the same applies hereinafter) causes the tip portion of the pin 262 to approach the slit 23S ( It moves to the opposite side of the lever 261, and the tip of the pin 262 (see FIG. 6; the same applies hereinafter) engages with the slit 23S (see FIG. 6; the same applies hereinafter) again. When the tip of the pin 262 is slightly displaced from the position of the slit 23S in the circumferential direction of the extending arm 23, the tip of the pin 262 is moved to the outer peripheral surface of the extending arm 23 until reaching the position of the slit 23S. Slide along and engage.

  As shown in FIGS. 7 and 8, the user can place an article such as a beverage bottle A1 on the fixed top plate 240 in which the orientation of the upper surface 240A is fixed. Further, the orientation of the upper surface 250A can be changed, and an article such as a book A2 can be placed on the movable top plate 250, for example. Then, when reading a book with the upper surface 250 </ b> A oriented in a desired direction, the lower part of the book A <b> 2 is supported by the fall prevention unit 258 and does not fall from the movable top plate 250.

  In the chair device 1 configured as described above, the table main body 24 is supported by the extending arm 23 supported in a cantilever manner by the base portion 21. The table main body 24 includes a movable top plate 250 that is rotated around a tilting axis J2 provided on the extending arm 23 and supported by the extending arm 23 so that the orientation of the upper surface 250A can be changed. Further, the table main body 24 has a fixed top plate 240 that is arranged side by side with the movable top plate 250 in the direction in which the extension arm 23 extends, and is supported by the extension arm 23 with the orientation of the upper surface 240A being fixed. That is, the movable top plate 250 and the fixed top plate 240 are arranged along the direction in which the extending arm 23 extends from the base portion 21 in a cantilever manner. When the user faces the front surfaces of the movable top plate 250 and the fixed top plate 240, the base portion 21 is disposed on the side of the user. That is, one base 21 is configured to support both the movable top plate 250 and the fixed top plate 240 via the extending arm 23. Therefore, there is no table device 20 that protrudes to the left from the movable top plate 250 and the fixed top plate 240, and the protrusion to the side of the chair device 1 is suppressed. For those who do, the chair device 1 is unlikely to get in the way.

  Further, since the tilt axis J2 is arranged along the direction in which the extending arm 23 extends, the movable top plate 250 rotates around the direction in which the extending arm 23 extends. Therefore, even when the movable top plate 250 rotates around the extending arm 23, the movable top plate 250 and the fixed top plate 240 are well aligned along the extending arm 23.

  In addition, since the fixed top plate 240 is provided on the base end side of the extending arm 23 having a cantilever shape, a beverage bottle A1, food, etc. are placed on the fixed top plate 240 on which the orientation of the upper surface 240A is fixed by the user. When the article is placed, the fixed top plate 240 can stably support the article.

  Further, since there is a gap S between the movable top 250 and the fixed top 240, when the movable top 250 is rotated about the tilting axis J2, the article of the movable top 250 and the fixed top 240 is obtained. And so on.

  Further, a drop prevention portion 258 is provided on the near side edge portion 255 which is one edge portion of the movable top plate 250 in the direction orthogonal to the tilting axis J2. Therefore, in a state where the movable top plate 250 is inclined so that the front side edge portion 255 is positioned below the back side edge portion 253, the article placed on the movable top plate 250 is the movable top plate 250. Even if the article moves downward in the tilt direction (on the near side edge portion 255 side), the article is supported by the fall prevention unit 258 provided on the near side edge portion 255 and does not fall from the movable top plate 250.

  Further, the lever 261 can be switched between a state in which the movable top plate 250 can be rotated around the tilt axis J2 and a state in which the movable top plate 250 cannot be rotated, so that operability can be improved.

  Further, since the extending arm 23 is provided with a rotation mechanism 26 that allows the movable top plate 250 to rotate about the tilt axis J2 by a predetermined angle, the movable top plate 250 changes the direction of the upper surface 250A by a predetermined angle. be able to. Therefore, the upper surface 250A of the movable top plate 250 can be oriented in a desired direction according to the user's posture, preferences, and the like, which is highly convenient.

  Further, since the extending arm 23 can rotate about the swing axis J <b> 1 extending in the vertical direction, the movable top plate 250 and the fixed top plate 240 supported by the extension arm 23 together with the extending arm 23 are swing shafts. Rotate around J1. Therefore, the movable top plate 250 and the fixed top plate 240 are rotated around the swing axis J1 in accordance with the mode of use, non-use, etc., and the horizontal position of the movable top plate 250 and the fixed top plate 240 is changed. Because it can be convenient.

  Further, since the fixed top plate 240 with the orientation of the upper surface 240A fixed is provided on the base end side of the extending arm 23 extending from the base portion 21, even if the extending arm 23 rotates around the swing axis J1. The centrifugal force acting on the fixed top plate 240 can be suppressed. Therefore, the fixed top plate 240 can stably support the article.

  Moreover, since the movable top plate 250 and the fixed top plate 240 of the chair device 1 are disposed above the seat body 4 on which the user sits, the user sits on the seat body 4 and the movable top plate 250 and A fixed top plate 240 can be used.

  The first corner 252 of the movable top 250 has a curved shape so that the rotation locus K2 around the swing axis J1 is closer to the inner circumference than the rotation locus K1 around the swing axis J1 of the outer peripheral edge 251. Since it is formed, the rotation trajectory of the movable top plate 250 can be kept small. Therefore, when the movable top plate 250 is rotated around the swing axis J1, the movable top plate 250 is not easily obstructed.

  Further, since the first corner portion 252 of the movable top plate 250 is formed so that the curvature radius is larger than the curvature radius of the second corner portion 256, the movable top plate 250 is in the retracted position, and the movable top plate 250 is movable. It is possible to suppress resistance when a person who passes around the chair device 1 of the board 250 or a person who performs work contacts the movable top board 250.

  Moreover, since the 1st corner part 252, the outer-periphery edge part 251, and the 2nd corner part 256 are formed in the shape of a continuous curve, when it exists in a retracted position, the person who passes around the chair apparatus 1 and work are done. For the person, the movable top plate 250 is difficult to get in the way.

  Further, since a gap T is formed between the fixed top plate 240 and the movable top plate 250 and the elbow rest 7 when viewed from the front, even if the table main body 24 rotates around the swing axis J1, it is fixed. Articles or the like are not sandwiched between the top plate 240 and the movable top plate 250 and the elbow rest 7.

  The skew portion 213 is formed radially outward so as to move away from the swing shaft J1 from the lower portion toward the upper portion. Therefore, when the skew portion 213 rotates around the swing shaft J1, The elbow rest main body 12 does not interfere.

  Note that the present invention is not limited to the above-described embodiment. For example, the movable top plate 250 can be rotated around one tilt axis J2, but can also be rotated around other axes that intersect the tilt axis J2. It may be rotatable. Thereby, the movable top plate can be directed with its upper surface inclined not only in the front-rear direction but also in the left-right direction.

  Further, the fall prevention unit 258 may be provided on the edge side opposite to the front side edge portion 255 orthogonal to the tilting axis of the movable top plate 250. It is preferable to provide in the edge located in the lower part of a movable top plate in the state which changed the direction of the upper surface.

In each embodiment, the use of the chair device is not limited at all, and is suitable for a medical chair that is used for a long time in medical practice, medical treatment, etc., and a relaxation chair used in a home or commercial facility. Also suitable.
And the structure in the said embodiment is an example of this invention, A various change is possible in the range which does not deviate from the summary of the said invention.

DESCRIPTION OF SYMBOLS 1 ... Chair apparatus 2 ... Base frame 3 ... Chair main body 4 ... Seat body (seat part)
5 ... Backrest 6 ... Lower leg receiving part 7L ... Left elbow rest 7R ... Right elbow rest 20 ... Table device 21 ... Base 23 ... Extension arm (table support part)
24 ... Table body 30 ... Monitor support device 240 ... Fixed top (second top)
250 ... movable top plate (first top plate)
258 ... Fall prevention part 261 ... Lever (switching part)
J1 ... Oscillating axis J2 ... Tilt axis S ... Gap

Claims (9)

A table body having a first top plate and a second top plate;
A table support for supporting the table body;
A base for supporting the table support in a cantilevered manner,
The first top plate is supported by the table support unit so as to be able to change the direction of the upper surface by rotating around a tilt axis provided in the table support unit,
The table device, wherein the second top plate is arranged side by side with the first top plate in a direction in which the table support portion extends, and is supported by the table support portion with the orientation of the upper surface fixed. . The table apparatus according to claim 1, wherein
The tilting shaft is arranged along a direction in which the table support portion extends. The table apparatus according to claim 1 or 2,
The first top plate is provided on a tip side of the table support portion;
The table apparatus, wherein the second top plate is provided on a base end side of the table support portion. In the table apparatus as described in any one of Claims 1-3,
The table device, wherein the first top plate and the second top plate are arranged with a gap between each other. In the table apparatus as described in any one of Claims 1-4,
A table device, wherein at least one edge portion of the first top plate in a direction orthogonal to the tilt axis is provided with a fall prevention portion capable of rising from the upper surface of the first top plate. . In the table apparatus as described in any one of Claims 1-5,
A table device comprising: a switching unit capable of switching between a state in which the first top plate can be rotated around the tilt axis and a state in which the first top plate cannot be rotated. In the table apparatus as described in any one of Claims 1-6,
The table apparatus, wherein the table support portion is provided with a rotation mechanism that allows the first top plate to rotate about the tilt axis by a predetermined angle. In the table apparatus as described in any one of Claims 1-7,
The base has a swing shaft extending in the vertical direction,
The table apparatus is characterized in that the table support portion is rotatable around the swing shaft. The table device according to any one of claims 1 to 8,
A chair device, comprising: a table main body having a seat portion on which a user can sit, wherein the table main body of the table device can be arranged upward.

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