JP2002199954A - Seat board standable chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat standable chair which allows an user to perform smooth movements to sit on the chair and to leave it by giving a wide space between a seat board and a desk or the seatback of a chair in front of the chair when standing the seat board. SOLUTION: The seat board standing chair is equipped with a vertical part 2 and a seat board 5 connected to the vertical part 2, and the seat board 5 is connected as it can swing between a horizontal status of a seated status and a vertical status of an upright status. An extendable system 10 which extends and shrinks while it is connected to the vertical part 2 is equipped. The seat board 5 is kept horizontal when the seat board 5 is put on the extendable system 10, and the extendable system 10 extends. If the extendable system 10 shrinks, the seat board 5 is kept vertical.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stand-up chair provided in a lecture room or a conference hall of a theater, a stadium, a school or other various facilities.

[0002]

2. Description of the Related Art As an upright chair, there is a chair as shown in FIG. The upright-type chair 50 is provided to face the desk 40, and supports a support plate 51 erected on a floor 60 with a seat plate 5.
2 and backrest 53 are attached. A bracket 54 is fixed to the column 51 so as to protrude forward from the vicinity where the seat plate 52 is set.
Is pivotally attached to the bracket 54 from a horizontal state to a standing state.

As shown in FIG. 10, swing members 55 and 56 are attached between the seat plate 52 and the bracket 54 so as to be swingable. 55 and 56 swing (swing), so that the seat plate 52 can be lifted from a substantially horizontal state to a substantially vertical state (see an arrow A in FIG. 10). Here, when the user sits down, the seat plate 52 is tilted forward so as to be in a substantially horizontal seating state. When the user leaves the seat, the user lifts the seat plate 52 backward, and stands substantially vertically as indicated by a chain line. State.

[0004]

However, the upright chair 50 in which the seat plate 52 swings up has the following problems. That is, in the upright chair 50 shown in FIG. 10, the user stands between the chair 50 and the desk 70 in a state where the seat plate 52 is upright, and the seat plate 52 is folded to sit on the chair. State (arrow A in FIG. 10)
To swing down to a substantially horizontal state, the distance L between the trajectory of the front end of the seat plate 52 and the desk 70 is reduced.
Is narrow, the thighs and the like are easily caught between them, and there is a problem that the seat plate 52 cannot be easily swung horizontally. The same applies to the case of leaving the seat. When the user tries to stand up, his feet are caught between the desk 70 and the seat plate 52,
It becomes difficult to raise the seat plate 52 in the vertical direction. Also, when a large number of chairs are arranged in front and back, such as in a theater or the like, if the distance between the front chair and the backrest is small, it is difficult to perform the unattended / seated operation.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and uses a wide distance between a seat plate and a desk or a distance between a backrest of a front seat when swinging a seat plate. It is an object of the present invention to provide a sitting-type chair that can smoothly perform an operation of taking or leaving a person.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an upright chair according to the present invention includes a vertical member and a seat plate connected to the vertical member, and the seat plate is seated substantially horizontally. In what is swingably connected to a state and a substantially upright standing state, a telescopic mechanism is provided that is connected to a vertical member and expands and contracts. The seat plate is held substantially horizontally, and the seat plate is held substantially vertically when the extension mechanism is reduced. Note that the vertical member means a column, a backrest, a wall, a desk in a rear seat, or the like.

Preferably, the extension mechanism is connected to a vertical member and extends and contracts in the front-rear direction, a shaft support provided on the back surface of the seat plate, and is pivotally supported by the link and the shaft support. A shaft portion that supports the seat plate so as to be able to swing and also supports the link portion so that it can expand and contract,
When the link portion is extended and the rear end of the seat plate is lowered, the seat plate is held substantially horizontally, and when the link portion is reduced, the seat plate is drawn to the vertical member side, and accordingly the rear end of the seat plate is lifted, The seat plate is held substantially vertically.

Preferably, the extension mechanism is connected to a vertical member and extends and contracts in the front-rear direction, a shaft support provided on the front side of the rear surface of the seat plate, and pivotally supported by the link and the shaft support. A shaft portion that supports the seat plate so as to be able to swing and also supports the link portion so that the link portion can be extended and contracted, and a swing member that is pivotally attached to the vertical member and performs an operation of lifting the rear portion of the seat plate from the horizontal direction to the vertical direction. When the link portion is extended and the swinging member swings from the vertical position to the horizontal direction, the seat plate is held substantially horizontally, the link portion is reduced, and the swinging member is moved from the horizontal position to the vertical direction. When the rocker swings, the seat plate is brought closer to the vertical member, and the rear portion of the seat plate is lifted to be held substantially vertically.

Further, the expansion and contraction mechanism is preferably configured as a link portion that expands and contracts in a pantograph shape by connecting a plurality of panels.

As described above, according to the upright chair of the present invention, the swing locus of the seat plate is drawn toward the vertical member, and the seat plate is swung. Therefore, the trajectory defined by the end of the seat plate can be easily moved to the vertical member side, and when the desk is placed in front of the standing-type chair, the desk and the seat are swung when the seat plate is swung. The space between the plates can be increased.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing an upright chair (hereinafter, referred to as a chair) 1 according to an embodiment of the present invention.
FIG. 2 is a sectional view taken along line AA of FIG. As shown in FIG. 1, the chair 1 is used in a classroom, a conference room, or the like. Usually, it is used by arranging several rows in front, back, left and right. In particular, the chair 1 is configured to hold the seat plate substantially horizontally when seated and to hold substantially vertically when standing up.

The chair 1 shown in FIG. 1 regulates the swing trajectory of the seat plate when the seat plate is changed between the seated state and the upright state. It is characterized in that it is performed by pulling it. Therefore, as shown in FIG. 1, the chair 1 is located in front of a vertical member (hereinafter, referred to as a column 2) such as a square tube, a cylinder, a rectangular parallelepiped, or a column standing on the ground, floor, base 3, or the like. , A bracket 4, a seat plate 5, a backrest 6, and a telescopic mechanism 10. In addition, F shown in the figure means forward, and R means backward.

First, the extension mechanism 10 will be described. The extension mechanism 10 supports the seat plate 5 substantially horizontally or substantially vertically, and regulates the swing of the seat plate 5 in the process of swinging the seat plate 5 between horizontal and vertical. Therefore, the telescopic mechanism 10 includes a link 40, a shaft support, a shaft,
The swing member 7 is provided.

Here, the link portion 40 is connected to the front surface of the bracket 4 fixed to the column 2, and is configured to extend and contract in the front-rear direction. To form a pantograph. That is, the link portion 40 is attached to the bracket 4 of the support column 2 and performs a telescopic operation like a pantograph. Each of the panels 11 to 14 is, for example, a flat plate made of iron, hard synthetic resin, or the like having a thickness of about 1 to 2 cm. As shown in FIG. 4 to be described later, each of the panels 11 to 14 has a pair of end faces opposed to each other. An iron rivet 15 is fitted into the hole. The panels 11 to 14 are desirably made of iron or hard synthetic resin, or a member having strength enough to withstand the weight of a seat or the like.

Next, the connection between the panels will be described by taking the connection of the two panels 13 and 14 as an example. The panels 13 and 14 are in contact with each other at their one end surfaces having irregularities and mesh with each other.
The shaft holes of the bearing part 16 of the other panel 14 and the bearing part 16 of the other panel 14 are aligned with the same axis, and rivets 15 are inserted into these bearing parts 16 to form hinges and are connected to each other. Then, the panels 13 and 14 are connected to the rivets 15.
Can swing each other around the axis. That is, the connecting portion between the panels 11 to 14 is configured as a hinge.

By such a connection, a plurality of panels 11 to 1 are formed.
4 are connected in a chain shape, and the end faces of the panels 11 and 14 at both ends are supported by the bracket 4. The swinging portion between the panels 11, 14 and the bracket 4 is also configured as a hinge 4a, similarly to the connection between the panels 11 to 14. With this configuration, the link portion 40 (panels 11 to 1)
4), the expansion and contraction operation is performed in the horizontal direction from the front surface of the bracket 4 like a pantograph. The connecting point 17 between the panel 12 and the panel 13 is desirably designed so as to be arranged on an intermediate line (a dashed line X shown in FIG. 2) which symmetrically partitions the chair, as shown in FIG.

In this embodiment, as shown in FIG. 2, the panels 11 to 14 connected in a pantograph shape are connected to each other by four.
The panels 11 and 14 at both ends are pivotally supported by the bracket 4, and the area defined by the four panels and the front surface of the bracket 4 is arranged so as to define a pentagon. May be provided to form the link section 40.

Further, preferably, when the seat plate 5 is held in a substantially horizontal state, the link portion 40 is designed to form a pentagon as shown in FIG. However, when the seat plate 5 is changed to the upright state, it is desirable in order to smoothly reduce the link portion.

In other words, the dashed line Y shown in FIG.
Is an imaginary line connecting a connection point (hinge) 17 and a connection point (hinge) 4a between the panel 11 and the bracket 4, and a connection point (hinge) between the panel 11 and the panel 12 with reference to the dashed line Y. ) 19 is preferably arranged outside the chair. The panel 13 and the panel 14
The same is true for the connection point (hinge) 18 with. FIG. 3 is a partial bottom view of the chair 1 according to the embodiment of the present invention. As shown in FIG. 3, the link portion 40 formed as described above is such that the hinge 17 is moved toward the column 2 (in FIG. When pulled (in the direction of arrow A), the other hinges 18, 19 move outward, widen and shrink by pantograph operation.

Next, the connecting portion of the link section 40 (panel 1
An example of a connection configuration between the connection plate 17 and the seat plate 5 will be described. A shaft support portion and a shaft portion are interposed between the link portion 40 and the seat plate 5, and the link portion 4
0 and the seat plate 5 are connected so as to be able to swing or expand and contract with each other. Hereinafter, a specific configuration will be exemplified.

FIG. 4 shows a link unit 4 according to an embodiment of the present invention.
FIG. 5 is an exploded perspective view showing an example of a connection configuration of the seat 0 and the seat plate 5. As shown in FIG. 4, a T-shaped shaft 20 as a shaft and a shaft support are provided between the link portion 40 and the seat plate 5. Axle sections 21 and 21 are interposed. T
The shaped shaft 20 is pivotally supported by the link portion 40 and also by the shaft supporting portions (the shaft portions 21 and 21), so that the seat plate 5 and the link portion 40 can freely swing or expand and contract, respectively. And made of iron or a hard synthetic resin.

The T-shaped shaft 20 is provided with a hinge 17, that is, a shaft hole 16 at a connecting portion between the panels 12 and 13.
a, and a seat plate connecting portion 20b mounted on the shaft portions 21, 21 provided on the seat plate 5. Each of the swinging portion 20a and the seat plate connecting portion 20b is formed in a columnar shape, and is a member having strength enough to withstand the weight when seated or the like.

On the other hand, each shaft support 2 as a shaft support
Each of the shaft holes 21a and 21 has a shaft hole 21a having a diameter enough to allow the seat plate connecting portion 20b to be loosely fitted.
21a is arranged and mounted on the back surface of the seat plate 5 so as to be on the same axis. That is, the shaft holes 21a, 21
The axis of a is orthogonal to the dashed line X shown in FIG.

The connection between the link portion 40 and the seat plate 5 is configured as described above, so that the panels 12 and 13
Even if it swings around the axis, the T-shaped shaft 20
Since the seat plate connecting portion 20b is suspended between the shaft portions 21 and 21, it does not rotate around the axis of the shaft hole 16a and maintains a substantially constant state. In addition, seat plate 5
Can swing about the axis centering on the seat plate connecting portion 20b. Even when the seat plate 5 swings around the seat plate connecting portion 20b, the panel swinging portion 20a is inserted into the shaft hole 16a of the panels 12 and 13, so that T
The shape shaft 20 does not rotate in conjunction with the swing of the seat plate 5 and maintains a certain posture.

Next, another connection configuration between the link portion 40 and the seat plate 5 will be exemplified. FIG. 5 is a perspective view showing another example of the connection configuration of the link portion 40 and the seat plate 5 according to the embodiment of the present invention. As shown in FIG. A ball-type shaft 22 in which the connecting portion 20b is replaced with a ball 22b may be used, and a connecting structure may be used by using a ball joint portion 23 as a shaft supporting portion connected to the ball-shaped shaft 22. The ball 22b provided at the end of the ball-type shaft 22 has a spherical shape and a diameter larger than the diameter of the panel swinging portion 20a.

The ball joint 23 has a hollow, hemispherical spherical locking portion 23a, and the spherical locking portion 23a
Is formed with a notch groove 23b. This groove 23
The width b is small enough to allow the diameter of the panel swinging portion 20a of the ball-type shaft 22 to be loosely fitted, and is smaller than the diameter of the ball 22b. The ball 22b is fitted into the spherical locking portion 23a from the groove 23b, and
And the ball joint 23 are the ball joint 2
3 is connected so as to be suspended from the ball-shaped shaft 22.

The groove 23b is formed in the ball-shaped shaft 22.
The joint between the ball 22b and the panel swinging portion 20a is sandwiched.
And is slidably connected and supported in sliding contact. The ball joint portion 23 is provided at a position where the shaft frame portion 21 shown in FIG. 2 is attached, and is attached so that the groove 23b is along the alternate long and short dash line X shown in FIG. Even when the ball-shaped shaft 22 and the ball joint portion 23 are used, the link portion 40 and the seat plate 5 can be connected similarly to the T-shaped shaft 20 and the shaft frame portion 21.

Next, the swing member 7 will be described. The swing member 7 is interposed between the seat plate 5 and the bracket 4, and holds the seat plate 5 so as to be able to swing with respect to the bracket 4. It is supported by and swings. That is, when shifting from the state where the seat plate 5 is held in a substantially horizontal state to the upright state, the rear portion of the seat plate 5 is lifted, and when shifting from the upright state of the seat plate 5 to the substantially horizontal state, Swing so as to lower the rear part of the seat plate 5. For this reason, the swinging member 7 has, for example, a panel shape, and one end of the swinging member 7 is located at a rear portion of the back surface of the seat plate 5 (a portion which is receded by a predetermined distance from the location where the shaft portion and the ball joint portion are provided to the support 2 side). ), And is swingably connected to the bracket 4 at the other end opposite thereto.

Here, a connection configuration between the seat plate 5 of the swing member 7 and the bracket 4 will be exemplified. FIG. 6A is a partial bottom view of the chair according to the present embodiment, and FIG. 6B is a partial side view. As shown in FIGS. 6A and 6B,
The swing member 7 is attached to the seat plate 5 and the bracket 4 via hinges 24 and 25.

Next, the seat plate 5 of the swing member 7 and the bracket 4
An example of another connection configuration is shown. FIG. 7A is a partial bottom view of the chair according to the present embodiment, and FIG. 7B is a partial side view. The swing member 7 shown in FIGS. 7A and 7B
The shaft holes 26 and 27 into which the rivets 28 and 29 are loosely fitted are provided at the front end and the rear end. The oscillating member 7 has rivets 28, 29 fitted in shaft holes 26, 27, and rivets 28, 28 provided on shaft frames 30, 30 provided on the rear surface of the rear surface of the seat plate 5.
Are mounted on the shaft 4 and the shaft units 31 and 3 provided on the bracket 4
1 is provided with a rivet 29, and the seat plate 5 and the bracket 4
And swingably interposed therebetween.

The shaft units 30, 30 (31, 31)
Has a shaft hole having a diameter such that the rivet 28 (29) can be loosely fitted therein, and the shaft holes of the shaft units 30, 30 (31, 31)
On the back surface of the seat plate 5 (the bracket 4
(On the top surface of). That is, the axial centers of the shaft holes are arranged so as to be orthogonal to the alternate long and short dash line X shown in FIG. In addition, the shaft units 30, 30, 31, 3
The shape of 1 is the same as, for example, the shaft portion 21 shown in FIG. Thus, the swing member 7, the seat plate 5, and the bracket 4
It is needless to say that a hinge is used also at the connection point with the above, and another configuration can be applied as the hinge.

As shown in FIG. 1, the bracket 4 is provided so as to protrude forward at a position slightly below the middle of the column 2 and pivotally supports the link portion 40 as described above, and swings the swing member 7. I will support it as much as possible. Note that the chair 1 according to the present embodiment may be configured without the bracket 4, and in that case, the link portion 40 and the swing member 7 are attached so as to be pivotally supported by the column 2.

With the above configuration, the seat plate 5 is in a substantially vertical state horizontal to the support column 2 in the upright state, and is held substantially horizontal in the seated state.

Next, the chair 1 in the seated state shown in FIG.
Is changed to the upright state shown in FIG. 8D.

The chair 1 in the seated state shown in FIG.
Is in a state where the seat plate 5 is held substantially horizontally. At this time, the link unit 4 composed of the plurality of panels 11 to 14
0 is extended, and the swinging member 7 is substantially parallel to the seat plate 5. Next, when the rear portion of the seat plate 5 of the chair 1 shown in FIG. 8B is slightly lifted, the link portion 40 interlocks, or
When the link portion 40 is reduced, the swinging member 7 starts swinging in conjunction with the reduction of the link portion 40, so that the rear portion of the seat plate 5 is lifted.

Subsequently, as shown in FIG. 8 (C), when the link portion 40 is pulled toward the column 2, the angle between the swing member 7 and the horizontal plane increases, and the rear portion of the seat plate 5 further lifts. As the rear of the seat plate 5 lifts, the front of the seat plate 5 goes down.

The chair 1 shown in FIG.
At this time, the link portion 40 is most contracted, and the swinging member 7 is substantially perpendicular to the horizontal plane. As described above, the chair 1 is swung up substantially in parallel with the column 2 so that the chair 1 has a reduced projection and is stored compactly.

On the other hand, in order to tilt the seat plate 5 in the upright state, that is, the folded state substantially horizontally (swing down), put a hand on the front part of the seat plate 5 located at the lowermost end and lift it upward. And the link section 40 expands in conjunction with it,
The swinging member 7 also swings in the horizontal direction in accordance therewith, and the rear portion of the seat plate 5 is lowered, and the seat plate 5 falls forward. Therefore, the user can sit on the seat plate 5 in this state.

As described above, according to the chair 1 according to the embodiment of the present invention, the seat plate 5 is changed from the substantially horizontal state to the upright state by the cooperation of the expansion and contraction of the link portion 40 and the swing of the swing member 7. In the process of shifting (swinging up), the position of the seat plate 5 with respect to the column 2 can be pulled toward the column 2 as the seat plate 5 swings.

In other words, as compared with the swing-up type chair shown in FIG. 10, the chair 1 of the present embodiment can draw the front portion of the seat plate 5 toward the column 2 when the seat plate 5 swings. . Therefore, when a desk is arranged on the front of the chair 1, the distance L 'between the desk 70 and the seat plate 5, as shown in FIG.
Can be made wider than the distance L between the seat plate and the desk of the conventional chair, and interference with the thighs can be reduced when sitting or standing up.

Further, for example, when the distance between the desks arranged before and after is fixed, the swinging locus of the seat plate 5 can be drawn toward the column 2 as described above. Can be widely used, and it is easy to pass through.

In the above description, the chair 1 is exemplified by a case where the swing member 7 is interposed between the seat plate 5 and the bracket 4. It may be configured. In this case, when shifting the seat plate 5 from the substantially horizontal state to the upright state, the user lifts the rear portion of the seat plate 5 and makes the transition to the upright state as the link portion 40 contracts.

In the above description, as shown in FIG.
The link section 40 is composed of four panels 11 to 14,
Although the case where the panels 11, 14 at both ends are pivotally mounted on the bracket 4 has been exemplified, the chair of the present invention comprises the link portion 40 composed of two panels 11, 12, one end of which is bracketed as described above. 4 and the other end can be connected to the seat plate 5 via a T-shaped shaft 20 or the like.

In the above embodiment, the case where the column 2 is erected on the base 3 is taken as an example. However, the column 2 may be erected on the floor without the base 3. Alternatively, the chair may be provided on a vertical member such as a wall instead of the column 2.

[0045]

As described in detail above, according to the upright chair according to the present invention, the swing trajectory of the seat plate is drawn toward the vertical member, and the seat plate is swung. In addition to the above, it is possible to alleviate the interference, and when the space is provided between desks having a fixed space, the space between the spaces can be widely used.

[Brief description of the drawings]

FIG. 1 is a side view showing a standing chair according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a partial bottom view of the chair according to the embodiment of the present invention.

FIG. 4 is an exploded perspective view showing a connection configuration example of a link portion and a seat plate according to the embodiment of the present invention.

FIG. 5 is a perspective view showing another connection configuration of the link portion and the seat plate according to the embodiment of the present invention.

FIG. 6A is a partial bottom view of the chair according to the present embodiment,
(B) is a partial side view.

FIG. 7A is a partial bottom view of the chair according to the present embodiment,
(B) is a partial side view.

FIGS. 8A to 8D are side views each showing a chair according to an embodiment of the present invention.

FIG. 9 is a side view showing a chair according to the embodiment of the present invention.

FIG. 10 is a side view showing a conventional upright chair.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stand-up chair 2 Post 3 Base 4 Bracket 5 Seat plate 6 Backrest 7 Swinging member 10 Telescopic mechanism 11-14 Panel 15, 28, 29 Rivets 16 Bearings 16c, 21a, 26, 27 Shaft holes 17, 18, DESCRIPTION OF SYMBOLS 19 Connection part 20 T-shaped shaft 20a Panel swing part 20b Seat plate connection part 21, 30, 31 Shaft rack part 22 Ball type shaft 22b Ball 23 Ball joint part 23a Spherical locking part 23b Notch groove 24, 25 Hinge

Claims (4)

[Claims] An upright chair comprising a vertical member and a seat plate connected to the vertical member, wherein the seat plate is swingably connected to a substantially horizontal sitting state and a substantially vertical standing state. And providing a telescopic mechanism connected to the vertical member and expanding and contracting, wherein the seat plate is connected to the telescopic mechanism, and when the telescopic mechanism is extended, the seat plate is held substantially horizontally and when the telescopic mechanism is reduced. A seat-standing chair, wherein the seat plate is held substantially vertically. 2. The link mechanism according to claim 1, wherein the extension mechanism is connected to the vertical member and extends and contracts in the front-rear direction; a shaft support provided on a back surface of the seat plate; And a shaft portion for supporting the seat plate so as to be able to swing and for supporting the link portion so as to be extendable and contractible, when the link portion is extended and the rear end of the seat plate is lowered, Is held substantially horizontally, and when the link portion is reduced, the seat plate is drawn to the vertical member side, whereby the rear end of the seat plate is raised, and the seat plate is held substantially vertically. Item 8. The stand-up chair according to item 1. 3. The link mechanism according to claim 1, wherein the extension mechanism is connected to the vertical member and expands and contracts in the front-rear direction; a shaft support provided on the front rear surface of the seat plate; A shaft portion pivotally supported to swingably support the seat plate and extendably support the link portion; and a pivotally attached to the vertical member to lift the rear portion of the seat plate from a horizontal direction to a vertical direction. When the link portion is extended and the swing member swings from the vertical position to the horizontal direction, the seat plate is held substantially horizontally, and the link portion is reduced and swings. 2. The seat stand according to claim 1, wherein when the member swings from the horizontal position toward the vertical direction, the seat plate is moved toward the vertical member and the rear portion of the seat plate is lifted to be held substantially vertically. Style chair. 4. The sitting upright type according to claim 1, wherein the extension mechanism is configured as a link portion that expands and contracts in a pantograph shape by connecting a plurality of panels. Chair.