JP2001231651A - Seating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seating apparatus wherein by allowing an armrest to be turned in conjunction with the tilting motion of a backrest, a change in relative distance between the surface side of the backrest and the armrest can be limited to a minimum so that the operability of a reclining mechanism is improved, thereby minimizing the occurrence of a give-up state and further a hip sore phenomenon or the slippage of clothes can be eliminated so that more comfortable seating can be achieved. SOLUTION: The seating apparatus has a reclining mechanism 50 for retaining a backrest 30 at a desirable tilting angle and an armrest 40 disposed beside a cushion 20, and the armrest 40 is turned in conjunction with the tilting motion of the backrest 30 in such a manner that the proximal side of the armrest 40 follows on the locus of the tilting of the backrest 30 with respect to a predetermined location of the side of the backrest 30, while the armrest 40 retains an approximately constant angle with respect to the longitudinal direction thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seating device which is supported on a rear end side of a seat button so as to be tiltable, and which can hold the back slip at a desired tilting angle.
Here, the stool is mainly mounted on vehicles such as railway vehicles and aircraft.

[0002]

2. Description of the Related Art Conventionally, this type of stool is shown in FIG.
And FIG. 10 are known. That is, there is one in which a seat button 2 is fixed on a footrest 1 and armrests 4 are arranged on both sides of the seat buton 2 or the like. At the rear end of seat buton 2,
The back shift 3 is supported via the reclining mechanism 5 so as to be tiltable.

[0003] The armrest 4 is provided through the sod frame 4a.
It is integrally fixed to the seat frame 2a in the seat button 2. Therefore, the armrest 4 does not move at all from the original position even when the back shift 3 is reclined (tilted).
The lower end of the back slip 3 is rotatably supported at a position slightly above the rear end of the seat buton 2 via a rotary shaft 5a. The rotation shaft 5a becomes the center of rotation of the back slip 3.

The reclining mechanism 5 has a locking damper 5 b for holding the back slip 3 at a desired tilt angle, and the locking damper 5 b is disposed below the seat button 2. An operation lever 5c for releasing the restraint of the lock damper 5b is provided on the distal end side of the armrest 4, and a cable 5d for transmitting the operation of the operation lever 5c extends to the lock damper 5b. It is decorated in.

[0005]

However, in the above-described conventional stool, even if the back slide 3 is reclined (tilted), the armrest 4 does not move in response thereto, so that the back slide 3 is moved backward. As the operator falls down, the operation lever 5c on the distal end side of the armrest 4 becomes farther to the occupant, making it difficult to operate.

Further, since the height position of the armrest 4 does not change, the position of the arm of the occupant on the armrest 4 is relatively extended upward and forward in the reclining state in which the back slide 3 is largely tilted backward. Since the state becomes a so-called banzai state, there is a possibility that the degree of fatigue near the shoulder of the seated person may increase.

Further, since the rotation center of the back slip 3 is located above the rear end of the seat button 2, when the back slip 3 is tilted backward, the buttocks of the seated person move forward on the seat surface of the seat button 2. There are many so-called slippage phenomena, in which the clothes of the occupant in contact with the surface (backrest surface) of the back slip 3 are slipped when the back slip 3 is tilted backward. There was also a risk that the feeling was impaired.

The present invention has been made in view of the above-mentioned problems of the prior art. By interlocking armrests according to the tilt of the back slip, the relative position between the surface side of the back slip and the armrests is improved. To minimize the change in distance, improve the operability of the reclining mechanism, minimize the occurrence of the so-called banzai state, and further eliminate the buttocks and clothes slipping phenomena to provide a more comfortable seat. It is an object of the present invention to provide a seating device capable of realizing a feeling.

[0009]

The gist of the present invention to achieve the above-mentioned object lies in the following items. [1] A seating device (10) which is tiltably supported on the rear end side of a seat button (20) and which can hold the back slip (30) at a desired tilt angle. And a reclining mechanism (50) for holding the back shift (30) at a desired tilt angle, and an armrest (40) arranged on a side of the seat button (20). The armrest (40) is interlocked with the tilt of the back shift (30) by the mechanism (50), and the armrest (40) is maintained at a substantially constant angle in the longitudinal direction, and the armrest (4)
A seating device (10) characterized in that the base end side of (0) is set so as to follow a tilting locus with respect to a predetermined portion on the side of the back slip (30).

[2] The reclining mechanism (50)
The armrest (4) rotatably supports the lower end of the back-slip (30) to the installation site side, and is provided at a predetermined position on the side of the back-slip (30) relative to the rotation center of the back-slip (30).
0) is supported rotatably, and the armrest (4)
0) through the link member (45) via the link member (45) so that the armrest (40) keeps a substantially constant angle in the longitudinal direction of the armrest (40). At a front position in the rotatable manner to form a four-bar rotating mechanism, and the back slip (30) or the armrest (4)
(1) is provided with a locking means (51) capable of restraining the seating device at a predetermined position.
0).

[3] The locking means (51) is a connecting point between the center of rotation of the back slide (30) and the distal end of the armrest (40) with respect to the upper end of the link member (45), or the link. Between the two joints of the four-joint rotation mechanism at one of the center of rotation of the lower end of the member (45) with respect to the installation site and the connection point of the base of the armrest (40) with respect to the back slip (30); The seating device (10) according to [2], further comprising a damper (51) connected to each other on these diagonal lines and capable of adjusting and fixing the length steplessly by a predetermined operation.

[4] The locking means (51) is a connection point between the center of rotation of the back shift (30) and the distal end of the armrest (40) with respect to the upper end of the link member (45). The two joints of the joint rotation mechanism are connected to each other on these diagonal lines, and the damper (51) is capable of adjusting and fixing the length in a stepless manner by a predetermined operation, and fixing the length of the damper (51). The seating device (10) according to [3], wherein an operating unit (60) for releasing the armrest is provided on the distal end side of the armrest (40) located immediately beside one end of the damper (51). .

[5] The armrest (40) is provided with a cover (42) for concealing the reclining mechanism (50) entirely. [1], [2],
The stool (10) according to [3] or [4].

[6] The back button (2) is tilted by the reclining mechanism (50) to tilt the back shift (30).
0) is also interlocked, and the seat buton (20) has its seat surface maintained at a substantially constant angle.
[1], [2], and [3], wherein a predetermined gap is maintained with respect to a base end side of the back slip (30).
The stool (10) according to [3], [4] or [5].

[7] At least the link member (4) of the reclining mechanism (50)
The stool (10) according to [6], wherein the stool is rotatably connected to and supported at an intermediate position between the side of the back slip and the side of the back slip.

Next, the operation based on the above-mentioned solution will be described. According to the stool (10) of the present invention, the armrest (40) is interlocked with the inclination of the back shift (30) by the reclining mechanism (50), and the armrest (40) has a substantially constant angle in its longitudinal direction. Is maintained, the base end side of the armrest (40) moves so as to follow a tilt locus with respect to a predetermined position on the side of the back slip (30).

Accordingly, when the back shift (30) is greatly reclined rearward, the armrest (4)
0) also moves rearward and downward with a substantially constant angle. Therefore, for example, the reclining mechanism (5
Even in the case where the operation unit (60) of (0) is at the distal end side of the armrest (40), the operation unit (60) does not relatively separate even for a reclining occupant. In this manner, the reclining operation can be performed comfortably without imposing an excessive posture, regardless of the tilt angle of the back shift (30).

Further, as described above, the armrest (40) is interlocked with the inclination of the back shift (30), so that the arm of the occupant is in a banzai state in which the position of the arm of the occupant relatively extends upward and forward during reclining. In addition, since there is no such a phenomenon that the hips are displaced or the clothes are dislodged, fatigue and discomfort caused by these phenomena can be at least eliminated, and more comfortable sitting comfort can be obtained.

The armrest (4) accompanying the tilt of the back shift (30)
The interlocking of (0) is performed, for example, by the reclining mechanism (50)
Can be easily realized with a relatively simple configuration by using a four-bar rotation mechanism. Specifically, the lower end of the back slip (30) is rotatably supported on the installation site side, and the armrest (40) is provided at a predetermined position on the side of the back slip (30) from the rotation center of the back slip (30). Is rotatably supported.

Further, the tip of the armrest (40) is moved through the link member (45) via a link member (45) so as to keep the armrest (40) at a substantially constant angle in the longitudinal direction.
What is necessary is just to rotatably support each other at a position in front of the installation site side with respect to the rotation center. In such a case, in addition to the link member (45), the armrest (40) and the back slip (30) themselves each correspond to a movable joint (link) of the four-joint rotating mechanism.

Here, the back slip (30) or the armrest (4)
By providing a lock means (51) capable of restraining the position (0) at a predetermined position, the back slip (30) can be held at a desired tilt angle. Here, various forms are conceivable for the lock means (51). As the lock means (51) suitable for the structural characteristics of the four-bar rotation mechanism, for example, the damper (51) described in the above [3] or [4] may be used. According to this configuration, the tilt angle of the back shift (30) can be adjusted steplessly, and it can be securely and easily held at a desired angle.

Further, the armrest (40) can secure necessary supporting strength without using a frame dedicated to the armrest by utilizing the four-bar rotation mechanism. If the armrest (40) is formed to have a cover (42) for concealing all of the reclining mechanism (50) including the locking means (51), the appearance can be improved.

Further, the reclining mechanism (5)
0), the seat button (20) is also interlocked with the tilt of the back shift (30), and the seat surface of the seat button (20) is maintained at a substantially constant angle. The end side is
It may be set so as to maintain a predetermined gap with respect to the base end side of the back slip (30). In such a case, even if the back slip (30) is largely tilted rearward, there is no gap between the lower end of the back slip (30) and the rear end of the seat button (20) on the seating surface side. , A more comfortable sitting feeling can be obtained.

Specifically, for example, the seat button (20)
Is rotatably connected and supported at least in the middle of each of the link member (45) of the reclining mechanism (50) and the side of the back shift (30), thereby tilting the back slide (30) with a simple configuration. The seat buton (20) can also be linked.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Various embodiments of the present invention will be described below with reference to the drawings. 1 to 7 show a first embodiment of the present invention. Stool 10 according to the present embodiment
Is mounted on a vehicle or the like, and is configured to tiltably support a back slip 30 at the rear end side of the seat buton 20.
Can be held at a desired tilt angle.

The seat button 20 is fixedly mounted on a floor, which is an installation site, via a pedestal (not shown). The seat button 20 is formed by mounting a cushion pad 22 on a seat frame 21. An armrest 40 is disposed on the side of the seat button 20 so as to be interlocked with the inclination of the back gap 30. The armrest 40 will be described later.

The back shift 30 is supported so as to be tiltable to the rear end side of the seat button 20 via a reclining mechanism 50 so that a seated person can be held at a desired tilt angle by the reclining mechanism 50. Has become. The back gap 30 is formed by mounting a back pad 32 on a back frame (not shown).

In the present stool device 10, the armrest 40 is interlocked with the inclination of the back shift 30 by the reclining mechanism 50, and the armrest 40 is maintained at a substantially constant angle in the longitudinal direction. The side is set so as to follow a predetermined position on the side of the back slip 30 on the tilt locus.

The reclining mechanism 50 is configured as a four-bar rotating mechanism by supporting and connecting the following members. First, the back slip 30 has a lower end portion immediately behind the seat buton 20 and a rotation shaft 33 at a position below the seat surface.
It is rotatably supported through. The rotation shaft 33 is the center of rotation of the back slip 30. Note that the rotating shaft 33 is actually pivotally supported by a pedestal not shown, a bracket fixed to the pedestal, and the like.

The base end side of the armrest 40 is rotatably supported via a pivot pin 34 at a predetermined position above the rotation axis 33 of the back slide 30 on the side of the back slide 30. More specifically, the armrest 40 includes an armrest 41 extending in a longitudinal direction (back and forth) substantially parallel to the seating surface of the seat button 20, and a cover 42 integrally formed with the armrest 41 and extending downward.

The armrest 41 is a portion on which the occupant directly places his / her arm, and is provided with a cushion cover 41b along the upper surface of the frame 41a. The base end side of the armrest 41 is rotatably supported by the pivot pin 34. The cover part 42 is formed in a size and a shape that conceals all the components of the reclining mechanism 50 from the side.

The distal end of the armrest 41 is connected to the rotation shaft 33 of the back slip 30 via a link member 45 so as to support the armrest 41 at a substantially constant angle in the longitudinal direction.
It is supported at a position in front of the installation site side. Here, a connection point between the upper end side of the link member 45 and the distal end side of the armrest 41, and a connection point between the side of the back slide 30 and the base end side of the armrest 41 are two movable joints in the four-bar rotating mechanism. It becomes a great joint.

More specifically, the upper end of the link member 45 and the distal end of the armrest 41 are rotatably connected to each other by a pivot pin 46. Further, the lower end side of the link member 45 is rotatably supported via the rotating shaft 47 with respect to the installation site side.

The reclining mechanism 50 has a locking means capable of restraining the back slip 30 or the armrest 40 at a predetermined position. The locking means is provided between two joints between the rotation shaft 33 of the back slide 30 and a connection point on the tip end side of the armrest 41 with respect to the upper end side of the link member 45,
The dampers 51 are connected to each other on these diagonal lines.

The damper 51 can adjust and fix its length steplessly using a so-called gas-oil lock mechanism. Since the configuration of the damper 51 is general, detailed description is omitted, but as shown in FIG. 4 and FIG.
A piston rod 53 is attached to the outer cylinder member 52 extending in the longitudinal direction.
Are telescopically fitted inside.

A mounting bracket 52a is integrally fixed to the base end side of the outer cylindrical member 52.
2a is rotatably supported on the rotation shaft 33 of the back slip 30. On the other hand, a mounting bracket 53a is also integrally fixed on the distal end side of the piston rod 53, and the mounting bracket 53a is rotatable with respect to a pivot pin 46 connecting the link member 45 and the armrest 41. It is pivoted.

A push rod 54 is movably penetrated into the piston rod 53, and the gas / oil lock mechanism inside the push rod 54 can be released by pushing the tip of the push rod 54. I have. The piston rod 53 is urged against the outer cylinder member 52 in a direction to protrude outward.

An operating portion 60 for releasing the fixing of the length of the damper 51 is provided on the distal end side of the armrest 41 located just beside one end of the damper 51. Operation unit 60
Is an operation button 61 provided so as to be able to protrude and retract inside the distal end of the armrest 41, a first lever member 62, a second lever member 63 disposed between the operation button 61 and the push rod 54, and And a relay link member 64.

When the occupant presses the operation button 61, the first lever member 62 directly connected to the operation button 61 first rotates. Then, the relay link member 64 connected to the operation point side of the first lever member 62 also moves in one direction, whereby the second lever member 63 is connected to each other so as to transmit power so as to push the push rod 54. Have been.

Next, the operation will be described. As shown in FIGS. 1 and 6, the present stool 10 has a reclining mechanism 5.
0 allows the occupant to steplessly adjust and hold the desired tilt angle between the upright state in which the back slip 30 tilts forward and the full reclining state in which the back slip 30 tilts rearward. Can be.

When adjusting the tilt angle of the back shift 30,
4 and 5, when the operation button 61 is pressed, the first lever member 62 directly connected to the operation button 61 rotates, and the relay link member connected to the operation point side of the first lever member 62. 64 also moves in one direction. Then, the push rod 54 abutting on the action point side of the second lever member 63
Is pushed in, the fixed length of the damper 51 is released. At this time, the occupant can push the back slip 30 backward to the desired tilt angle at the back.

Also, due to the structure of the damper 51, the outer cylindrical member 52
In contrast, the piston rod 53 is urged in a direction to protrude outward, so that when the operation button 61 is pressed, if a rearward force is not applied to the back shear 30,
Due to the stretching force of the damper 51 itself, the back slip 30 naturally leans forward to the upright state. When the occupant moves the back slip 30 to a desired tilt angle,
When the finger is released from the operation button 61, the back slip 30 is fixed at the position by the damper 51.

The armrest 40 moves in conjunction with the tilting of the back shift 30 by the reclining mechanism 50. That is, in a state where the armrest body 41 keeps a substantially constant angle in the longitudinal direction, the armrest 40 tilts the base end side of the armrest body 41 with respect to the connection point (the pivot pin 34) with the side of the back shear 30. Move to follow the trajectory.

That is, as schematically shown in FIG.
In the four-bar rotating mechanism of the reclining mechanism 50, the armrest body 41 of the armrest 40 itself is a node that moves substantially in parallel, so that as shown in FIG. 2 and FIG.
At the time of full reclining, in which the armrest is largely tilted rearward, the armrest 41 also moves rearward and downward at a substantially constant angle.

Therefore, as in the present embodiment, the operation unit 60 (operation button 61) of the reclining mechanism 50 is used
Even if it is located on the front end side, the operation unit 60 does not relatively move away from the seated person in the full reclining state. In this manner, the reclining operation can be performed comfortably without imposing an excessive posture, regardless of the tilt angle of the back shift 30.

As described above, the armrests 40 are interlocked with the tilt of the back shift 30, so that the arm position of the seated occupant does not go into a banzai state in which the position of the arm of the occupant is relatively extended upward and forward during full reclining. Thereby, the feeling of fatigue near the shoulder of the seated person can be reduced.

Further, in the present embodiment, since the rotation shaft 33 of the back slip 30 is located below the seating surface at the rear end of the seat button 20, when the back slip 3 is tilted backward, as in the prior art, the seated person The buttocks that the buttocks slide forward on the seating surface of the seat buton 2 are also eliminated.

Also, the phenomenon that the clothes of the occupant in contact with the front surface (backrest surface) of the back slip 3 is not lifted is eliminated, and more comfortable sitting comfort can be realized. Also, as shown in FIG.
By extending downward so as to cover the rear end of the zero, it is not necessary to provide a cover member for concealing a gap generated between the lower end of the back slip and the rear end of the seat button as in the related art.

The interlocking of the armrest 40 with the tilt of the back shift 30 can be easily realized with a relatively simple configuration by using the four-bar rotating mechanism for the reclining mechanism 50. In addition, since the armrest 41 corresponds to a node of the four-bar rotating mechanism, the necessary supporting strength can be sufficiently secured without providing a special frame dedicated to the armrest.

All the components of the reclining mechanism 51 including the damper 51 are concealed by the cover 42 of the armrest 40, so that the appearance can be improved. Here, the shape of the cover portion 42 is not particularly restricted in design as long as the link member 45 and the damper 51 can be hidden.

In particular, since the damper 51 is also provided inside the armrest 40 where the operation button 61 is located, the operation button 61
Can be directly transmitted to the side of the damper 51 immediately besides, and a cable for relaying from the lock damper 5b disposed below the seat buton to the operation button 61 as in the related art is unnecessary.

Further, since the damper 51 is not provided below the seat button 20 unlike the prior art, the seat button 20 which is conventionally required to be cut off is eliminated, and a uniform cushioning property is provided over the entire seat surface of the seat button 20. Can be secured.
Further, since there is no restriction on the seat butons 20 based on the arrangement of the reclining mechanism 50, free shaping such as increasing the rear inclination of the seat surface is also possible.

FIGS. 7 and 8 show a second embodiment of the present invention. In this embodiment, the seat button 20 is also interlocked with the tilt of the back shift 30 by the reclining mechanism 50, and the rear end of the seat button 20 is maintained in a state where the seat surface of the seat button 20 maintains a substantially constant angle. The side is set so as to maintain a predetermined gap with respect to the base end side of the back slip 30.

The seat buton 20 has its front half side rotatably supported by a pivot pin 25 with respect to the middle of the link member 45, and a mounting bracket 26 integrally protruding from the rear end side. A pivot pin 35 protruding below the side of the back slide 30 is fitted into the elongated hole having play of the bracket 26 so as to be relatively rotatable and slightly movable.

As described above, the seat button 20 is rotatably connected to at least the link member 45 of the reclining mechanism 50 and each of the side portions of the back slip 30 so that the seat button 20 is interlocked with the tilt of the back slip 30. It is supported to be.

Thus, in the present embodiment, the back slip 3
Even if the 0 is largely tilted rearward until it is fully reclined, there is no gap between the lower end of the back slip 30 and the rear end of the seat button 20, and more comfortable sitting comfort can be obtained. . The same parts as those in the first embodiment are denoted by the same reference numerals, and redundant description will be omitted.

The stool according to the present invention is not limited to the configuration specifically shown in each embodiment. For example, the seat button 20 may be supported so as to be rotatable in the horizontal direction with respect to the pedestal so that the front and rear directions of the seating device 10 can be changed manually or by electric power.

Further, the damper 5 as the locking means 50
1, the joint between the rotation shaft 33 of the back slip 30 and the connection point on the distal end side of the armrest 41 with respect to the upper end of the link member 51 is connected to each other. The center of rotation with respect to the installation portion on the lower end of the armrest 41 and the connection point on the base end of the armrest 41 with respect to the back slip 30 may be connected to each other.

[0059]

According to the seating device of the present invention, the armrest is interlocked with the tilting of the back shift by the reclining mechanism, and the armrest is maintained at a substantially constant angle in the longitudinal direction. Since the end side follows the tilt locus with respect to the predetermined portion of the back slip side portion, even when the operating portion of the reclining mechanism is on the tip side of the armrest, the operating portion is relatively movable even for a reclining seated person. The reclining operation can be performed comfortably without leaving the target.

Further, as described above, the armrests are interlocked with the inclination of the back shift, so that the position of the arm of the seated occupant does not enter a banzai state in which the position of the arm of the occupant extends relatively forward and upward during reclining. Since the shift phenomenon and the slip-up phenomenon of clothes are also eliminated, fatigue and discomfort caused by these phenomena can be at least eliminated, and a more comfortable sitting comfort can be obtained.

[Brief description of the drawings]

FIG. 1 is a side view showing a stool according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a change in the tilt angle of the back slip of the stool according to the first embodiment of the present invention.

FIG. 3 is a plan view showing the stool according to the first embodiment of the present invention.

FIG. 4 is a side view showing a main part of the reclining device of the stool according to the first embodiment of the present invention.

FIG. 5 is a view taken in the direction of the arrow V in FIG. 4;

FIG. 6 is a schematic diagram showing a change in the tilt angle of the back slip of the stool according to the first embodiment of the present invention.

FIG. 7 is a side view showing a seat device according to a second embodiment of the present invention.

FIG. 8 is a perspective view showing a change in the tilt angle of the back slip of the stool according to the second embodiment of the present invention.

FIG. 9 is a perspective view showing a conventional stool.

FIG. 10 is a perspective view showing the internal structure of a conventional stool.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Seat device 20 ... Seat button 21 ... Seat frame 22 ... Cushion pad 30 ... Slip 32 ... Back pad 33 ... Rotating shaft 34 ... Pivot pin 40 ... Elbow rest 41 ... Elbow rest 42 ... Cover part 45 ... Link member 50 ... Reclining mechanism 51 Damper 52 External cylinder member 53 Piston rod 54 Push rod 60 Operation part 61 Operation button 62 First lever member 63 Second lever member 64 Relay link member

Claims (7)

[Claims] 1. A seating device which is supported on a rear end side of a seat button so as to be tiltable and can hold said back slip at a desired tilt angle, wherein said back slip is at a desired tilt angle. A reclining mechanism for holding the armrest and an armrest disposed on the side of the seat button, the armrest interlocks with the tilt of the back slip by the reclining mechanism, and the armrest extends in its longitudinal direction. A seating apparatus characterized in that the base end side of the armrest is set so as to follow a tilting locus with respect to a predetermined portion of the back slip side while maintaining a substantially constant angle. 2. The reclining mechanism rotatably supports the lower end of the back slip on the installation site side, and a base end of the armrest at a predetermined position above a center of rotation of the back slip on the side of the back slip. The armrest is further rotatably supported, and the distal end side of the armrest is connected via a link member so as to keep the armrest at a substantially constant angle in its longitudinal direction. 2. A stool according to claim 1, further comprising a four-joint rotating mechanism which is rotatably supported at a front position to form a four-bar rotating mechanism, and further comprising a lock means capable of restraining the back slip or the armrest at a predetermined position. apparatus. 3. The lock means comprises: a center of rotation of the back slip, a connection point on a tip side of the armrest with respect to an upper end of the link member, or a center of rotation with respect to an installation portion on a lower end of the link member. The two joints of the four-joint rotation mechanism at one of the connection points on the base end side of the armrest with respect to the back slip are connected to each other on these diagonal lines, and the length is steplessly adjusted and fixed by a predetermined operation. 3. A seating device according to claim 2, comprising a possible damper. 4. The diagonal line between the center of rotation of the back slip and two joints of the four-bar turning mechanism, which is a connection point on the tip end side of the armrest with respect to the upper end side of the link member, is provided on the diagonal line. A damper whose length can be adjusted and fixed steplessly by a predetermined operation, and an operating part for releasing the fixing of the length of the damper is located immediately beside one end of the damper. The stool according to claim 3, wherein the stool is provided on a distal end side of the armrest. 5. The stool according to claim 1, wherein said armrest is provided with a cover for covering the entire reclining mechanism. 6. The seat button is also interlocked with tilting of the back shift by the reclining mechanism, and the seat button has its seat surface maintained at a substantially constant angle. 5. The method according to claim 1, wherein a predetermined gap is maintained with respect to a base end of the slip.
Or the stool according to 5. 7. The seating apparatus according to claim 6, wherein the seat button is rotatably connected and supported at least at a position between the link member of the reclining mechanism and the back slip side.