JP2002119355A - Chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multifunction type chair with improved operability to demonstrate functions thereof. SOLUTION: On a chair with a plurality of operating parts 14-17 for adjusting height of backrests 4, 5 and locking, etc., two or more operating parts of a part or a whole of the operating parts are placed in a raw.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair having a plurality of operation units for adjusting the height of a back seat and the locking.

[0002]

2. Description of the Related Art Recently, multifunctional chairs have been developed for the purpose of improving sitting comfort and usability. For example, a seat height adjustment function, a locking / fixing switching function, a seat back-and-forth sliding function, and the like are typical examples. An operation unit is provided for each of these functions. Conventionally, each of these operation units is dispersed and appropriately arranged at various places on the chair.

[0003]

However, if the operation units are arranged in a dispersed manner in this way, the position of the operation unit may not be known to some people, and the user may feel dissatisfied with usability. In addition, if chairs have become more multifunctional in the future, if the operation units are distributed and arranged as in the past,
Due to the large number of operation units, there is a high possibility that difficulty will arise in operability.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a chair having a plurality of operation units for adjusting the height of a back seat and adjusting a rocking position.
Some or all of the operation units are collectively arranged to improve operability particularly in a multifunctional chair.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS That is, a chair 1 according to the present invention.
As shown in FIG. 16, a back seat locking function (FIG. 16A) for interlocking and locking the back seats 4 and 5, respectively, and a back tilt function for tilting only the back 5 (FIG. 16). (B)), a seat-seat boundary portion adjusting function for moving or deforming the seat-seat boundary portion K (FIG. 10C), and a seat 4.
At least a forward tilt angle adjusting function for adjusting the forward tilt angle of the vehicle (FIG. (D)) and a back seat elevating function for adjusting the height of the back seats 4 and 5 (FIG. (E)). Have.

In the present embodiment, however, the operation units 14, 15, 16, for mechanically operating these functions are provided.
17 are grouped and arranged in a predetermined area.

More specifically, as shown in FIG. 17, the operating portions 14, 15, 16, 17 are arranged in a line in the front-rear direction and are disposed below the front right side of the seat 4. If the occupant extends his hand downward while sitting, the operation units 14 and 1
This is because it is possible to naturally touch 5, 16, and 17.

In this embodiment, the operation unit 1
The arrangement order of 4, 15, 16, 17 is determined based on the arrangement order of the members exhibiting the respective functions, and it is easy for the occupant to understand which operation unit corresponds to which function,
It is designed to be easy to remember and easy to operate. Specifically, the highest priority is that the operation unit corresponding to the function exerted on the member below is arranged at the front. Next, for members having almost the same height or whose height relationship is not clear, the operation unit corresponding to the function exerted on the member in front is arranged closer to the front.

In the present embodiment, the member for realizing the function of raising and lowering the back seat is a gas spring (not shown) attached to the leg, which is located at the lowest position. Is located at the forefront. Next, since the member corresponding to the forward tilt angle adjustment function is mainly the seat 4, the operation unit 16 for performing the operation is
It is arranged next to the operation unit 17. Next, since the member corresponding to the backseat boundary portion adjusting function is located at the backseat boundary portion K, the operation unit 15 for performing the operation is provided by the operation unit 1.
It is arranged after 6. And since the member corresponding to the back seat locking function and the back tilting function is mainly the back 5,
An operation unit 14 for performing the operation is arranged at the rear end.

The operation units 14, 15, 16, 1
7 have the same shape or substantially the same shape,
In addition to providing a sense of unity and improving the appearance, the horizontal posture can be maintained, and the operation units 14, 15, 16, 17 are arranged at the same height in the state where the horizontal posture is maintained. Further, each of the operation units 14, 15, 16,
Unevenness (not shown) is provided on the surface of the surface 17 to be touched when operating in a predetermined operation direction so that the operation direction can be easily understood by a user.

Therefore, in such a case, since the operation units 14, 15, 16, 17 are arranged collectively, the position is easy to understand, and the operability of the multifunctional chair 1 is particularly improved. Can be. Further, for example, it is possible to provide an unusual usage such that a plurality of operation units 14, 15, 16, 17 can be simultaneously operated with one hand.

[0012]

An embodiment of the present invention will be described below with reference to the drawings. In this example, the same reference numerals are given to members corresponding to the above embodiment.

FIG. 1 is an overall side view of a chair 1 showing one embodiment of the present invention. The chair 1 basically includes a base leg 2, a support 3 attached to the base leg 2, a seat 4 and a back 5 supported by the support 3, and is functionally functional. As shown in FIGS. 1 to 4 and the like, a back seat locking function for interlocking and locking the back seats 4 and 5, a front tilt angle adjusting function for adjusting the front tilt angle of the seat 4, A back tilting function for tilting only 5, a back seat boundary portion adjusting function for moving or deforming the back seat boundary portion,
It has at least a back seat elevating function for adjusting the height of the back seats 4 and 5.

To describe each part in detail, the support base 3 is of an elongated shape, the lower end of which is fitted to the upper end of a column 2a constituting the base leg 2, and which is disposed so as to extend diagonally forward. I have.

The seat 4 has a seating surface 4 on a frame-shaped seat receiver 4a.
b.

The back 5 is formed by mounting a tension member 5b on the front side of a frame-shaped back support rod 5a, and has a shape that rises continuously from the rear edge of the seat 4 in appearance. The tension of the tension member 5b is used to give the backrest a cushioning property.

Next, a configuration for realizing each of the above functions will be described.

As shown in FIG. 1 and FIG. 2, the back seat locking function is to move the back seats 4, 5 to a normal use position (FIG. 1) or a forward tilt position (FIG. 4) described later and a rearward tilt position (FIG. 4). 2), a four-sided link mechanism K interposed between the support base 3 and the back seats 4, 5.
When the back 5 is tilted rearward, the seat 4 moves rearward while tilting rearward.

As shown in FIG. 1 and the like, this four-sided link mechanism K1 rotatably connects the ends of four link members 6a to 6d via support shafts t1 to t4, respectively. An inequilateral quadrilateral is formed. The support member 3 has a lower link member 6a, the seat 4a has an upper link member 6b, and the back support rod 5 (a lower frame 5c described later) has a rear link member 6c. A dedicated front link member 6d is provided between the front ends of the support base 3 and the seat receiver 4a to serve the functions.
Has been arranged.

In this embodiment, as shown in FIGS. 1 and 2, a locking switching mechanism K2 for switching the back seat locking function between an operable state and an inoperable state is provided. The locking switching mechanism K2 is configured to connect one end of a first gas spring GS1, which is a telescopic member capable of switching between a telescopic free state and a locked state in which the length is fixed, to a coupling shaft of the support base 3 with the front link member 6d. t3
The other end is rotatably connected to a portion t6 of the front link member 6d which is deviated from the connection axis t3 with the support base 3 while being displaced. In a state where the gas spring GS1 is in a free state, a force for forwardly moving the front link member 6d acts on the front link member 6d by the extension force, so that the back seats 4, 5 are biased in the forwardly leaning direction.

The switching between the free state and the locked state of the gas spring GS1 is performed by the first gas spring G1.
The switching is performed by operating a switching button B1 provided at the end of S1. The switching button B1 is connected to a first operation unit 14 to be described later via a link wire W1. Operation of the gas spring GS
1 is switched to switch between a state in which the back seats 4, 5 can be locked and a state in which the back seats 4, 5 are fixed at a desired angle.

The function of adjusting the forward tilt angle is to move the forward moving ends of the back seats 4, 5 by the four-side link mechanism K1 to the seating surface 4b.
Is a function of switching between a normal use position (FIG. 1) in which the seat is substantially horizontal and a forward tilt position (FIG. 4) in which the seating surface slightly tilts forward, and is realized by using the forward tilt angle adjusting mechanism ST1. Is done.

In this embodiment, as shown in detail in FIGS. 14 and 15, the forward tilt angle adjusting mechanism ST1 is provided with a protruding portion 6d1 provided at the upper end of the front link member 6d and a corresponding portion. And a regulating member 41 provided.

As shown in FIG. 14, the regulating member 41 is attached to a connecting shaft 42 provided across the rib 43a of the seat 4a, and has a disk shape having a certain thickness. Nipping part 41 protruding from the outer periphery
a is provided. Also, the connecting shaft 42
The guide cam 44 is attached to the outside of the rib 43a of the seat support 4a, and the rotation direction of the regulating member 41 is changed in the x direction / y direction by the action of the inclined cam 45 provided opposite thereto. It is possible to switch to.
The guide cam 44 is formed in a disk shape.
A ridge 44m rising from the surface is provided so as to be positioned at a valley 45v of the inclined cam 45 facing the hill.

On the other hand, the inclined cam 45 is provided with an inclined surface having a valley portion 45v and a peak portion 45m on the surface side facing the guide cam 44, and the ridge portion of the guide cam 44 is also provided on the opposite side. The spring 46 presses in the axial direction so that 44 m is guided to the valley 45 v of the inclined cam 45. The spring 46 is provided with the tilt cam 4.
5 is provided between the side wall 43b of the seat 4a, and is wound around a shaft J provided with a lever 47 so as to attach the inclined cam 45 to the guide cam 44 side.

Next, a description will be given of a case where the seat 4 is moved from the normal use position (FIG. 1) to the frontmost inclined position (FIG. 4) in the chair 1 configured as described above.

First, in the state of the normal use position (FIG. 1),
Front link member 6d, regulating member 41 and guide cam 44
15 (a), that is, the position where the sandwiching portion 41a of the regulating member 41 is sandwiched between the projecting portion 6d1 of the front link member 6d and the top plate of the seat receiver. In a relationship. In this state, the rotation shaft J is rotated by 90 degrees or more in the Y direction until it reaches a rotation restriction position (not shown) and stopped. Then, as shown in FIG. 15B, the ridge 45m of the inclined cam 45 becomes the ridge 4 of the guide cam 44.
It is rotated while sliding on the axis J in a direction away from the guide cam 44 to a position exceeding 4 m. Inclined cam 45
Is pressed in the direction of the guide cam 44 by the spring 46.
m tries to rotate in the X direction by sliding down the hill 45m of the inclined cam 45, but the pinching portion 41a of the restricting member 41 has the protrusion 6d1 of the front link member 6d and the top plate 43c of the seat 4a.
Between the regulating member 41 and the guide cam 4
4 cannot rotate.

In this state, when the seated person tilts the seat 4 and the back 5 backward, the four-sided link mechanism K1 constituted by the seat receiver 4a, the front link member 6d, the lower frame 5c, and the support base 3 is deformed. The front link member 6d rotates in the x direction about the axis t3. Accordingly, FIG.
As shown in (c), the protrusion 6d of the front link member 6d
1 is turned downward, and based on the opening of the space between the protruding portion 6d1 and the top plate 43c, the guide cam 44 also rotates in the x direction opposite to the operation direction of the tilt cam 45,
The ridge 44m of the guide cam 44 is the valley 45v of the inclined cam 45.
Will be located at Along with this, the tilt cam 45 also rotates so as to return in the x direction, and stops after being rotated by approximately 90 degrees from the state of the normal use position (FIG. 15A).

When the seat 4 and the back 5 are returned in this state, the four-side link mechanism K1 is deformed, and the front link member 6d
Seat 4 with the seat 4 attached with the front inclined.
"a" is sunk forward. In addition, the back 5
Is also inclined forward about the axis t2 (FIG. 15).
(D)).

Further, a forward tilt position state (FIG. 15)
(D)), when returning to the state of the normal use position (the position where the front link member 6d stands up), the rotation axis J is rotated by about 90 degrees or more in the x direction until it reaches a rotation restriction position (not shown), and the position is set. To stop. Accordingly, the tilt cam 4
The ridge 45m of No. 5 exceeds the ridge 44m of the guide cam 44 and the pressing force of the spring 46 causes the ridge 44m of the guide cam 44 to move.
m rotates in the y-direction so that it slides down the hill 45m of the tilt cam. Then, based on this rotation, the rotation is stopped where the peak 41a of the regulating member 41 comes into contact with the protrusion 6d1 of the front link member 6d, and the normal use position (the position where the front link member 6d stands) is set. Will be kept.

Then, when the seat 4 and the back 5 are tilted backward again in this state, the four-side link mechanism K1 is deformed, and the front link member 6d rotates in the x direction about the axis t3. Then, as shown in FIG. 15 (f), the projection 6d1 of the front link member 6d faces downward, and the regulating member 4
The space provided between the first holding portion 62 and the top plate 43c of the seat receiver 4a is opened, and the holding portion 41a of the regulating member 41 rotates so as to be held in this space.

When the seat 4 and the back 5 are returned to the original state in this state, the front link member 6d is displaced in the direction in which the front link member 6d is returned, and the front link member 6d Rotation is regulated. As a result, the inclination angle of the seat receiver 4a to which the seat 4 is attached is set to a substantially horizontal state, and the normal use position (the position where the front link member 6d stands up) is maintained.

The back tilting function is a function that can tilt only the upper part of the back 5, and is realized by the back tilting mechanism K3. As shown in FIGS. 1 and 3, the back tilting mechanism K3
a, a lower frame 5c located below the seat 4a,
An upper frame 5d which is rotatably coupled to the lower frame 5c via a support shaft t5 extending horizontally and horizontally, and which is a portion mainly corresponding to a backrest surface;
The upper frame 5d is configured to be tiltable with respect to the lower frame 5c between a standing posture (shown in FIG. 1) and a most inclined posture (shown in FIG. 3). The upper frame 5d
The spring S1 which is an elastic member always receives a force in the direction of the standing posture, and this spring S1
The direction of expansion and contraction is set in the lower frame 5c so as to match the longitudinal direction of the lower frame 5c. Note that the support shaft t
The setting portion 5 is between the support shafts t1 and t2 constituting the four-side link mechanism K1, and the tilting center of the back 5 when the back 5 is tilted backward by the back tilting function, and the back seat locking function. Thus, the center of tilt of the back 5 when the back 5 is tilted rearward is different from that of the back 5. 2 and 4, the spring S1 is omitted.

Further, in the present embodiment, a back-tilt switching mechanism K4 for switching between a state in which the back-tilt function is operable and a state in which the back-tilt function is inoperable is provided. This back-tilt switching mechanism K4
As shown in detail in FIGS. 11 to 13, the state in which the rotation of the upper frame 5d with respect to the lower frame 5c is prohibited and the state in which the rotation is permitted are switched. More specifically, the recesses 5d1 and 5c1 are located on the upper frame 5d and the lower frame 5c at positions deviated from the support shaft t5 and overlap with the side view in the standing posture.
Are provided, and the pins 7 are inserted into the left and right portions across the recesses 5d1 and 5c1, so that the operation becomes inoperable when the pins 7 are removed, and the operation becomes possible when the pins 7 are removed.

The pin 7 is inserted from the inside into the through hole 5d1, which is a concave portion on the upper frame 5d side, through the through hole 5c1, which is a concave portion on the lower frame 5c side. Is provided with a flange portion 7a, and a coil spring S is provided between the flange portion 7a and the inner surface of the upper frame 5d.
As shown in FIG. 13, the pin 7 is set so as to be at least pulled out of the through hole 5d1 of the upper frame 5d by interposing the pin 2 when no external force is applied as shown in FIG.

On the other hand, the seat 4a, which is positioned inward from the upper frame 5d and the lower frame 5c, has a pin insertion / removal hole 4a1 which is open on the outer surface 4a2 and through which the pin 7 can be inserted. A pressing member 8 that moves forward and backward inside the pin insertion / removal hole 4a1 is attached to the pin insertion / removal hole 4a1.
The pin 7 is pushed outward by the pressing member 8,
The upper frame 5d is fitted into the recess 5d1. The pressing member 8 presses the pressing surface 8a against the pin 7
Pressing position flush with outer side surface 4a2 (shown in FIG. 11)
And a non-pressing position (shown in FIG. 12) in which the pressing surface 8a is drawn inward from the outer surface 4a2. The operation is performed by transmitting the operation via the motion conversion mechanism D1 (shown in FIGS. 6 and 13). The motion conversion mechanism D1
A link frame 9 having one end rotatably coupled to the pressing member 8 and a pivotally supported by the seat receiver 4a, and a pivot end rotatably coupled to the other end of the link frame 9. The rotating arm 10 includes a link wire W1a having one end coupled to a rotating end of the rotating arm 10 and transmitting an operation of the first operation unit 14 to rotate the rotating arm 10. .

When the first operating portion 14 is operated to drive the pressing member 8 to the pressing position when the upper frame 5d is in the standing posture (shown in FIG. 1) with respect to the lower frame 5c, the pin 7 Is inserted across the through holes 5d1 and 5c1, and the back 5 is in a rotation prohibited state where the back 5 cannot be tilted. When the reverse operation is performed, the pin 7 comes out of the concave portion 5d1 of the upper frame 5d by the coil spring S2, and the back 5 is brought into the rotation allowable state in which the back 5 can be tilted.

In order for the pin 7 to come out of the through hole 5d1 of the upper frame 5d, the length of the pin 7 must be adjusted so that the non-insertion end face of the pin 7 is located inside the outer face of the seat 4a. You have set. That is, in order for the pin 7 to come out of the through hole 5d1 of the upper frame 5d, it is necessary to insert the pin 7 into the pin insertion / removal hole 4a1, and as shown in FIGS. , Back seat 4, 5
Only when is in the normal use position in the back seat locking function, the lower frame 5c side through-hole 5c1 overlaps the side view, and in a state where the back seats 4 and 5 are not in the normal use position, the recesses 5d1 and 5c1 does not polymerize in side view.
Therefore, even if the pin 7 is to be pulled out of the recess 5d1 of the upper frame 5d in order to exert the back tilting function in a state where the back seats 4, 5 are in positions other than the normal use position, the pin 7 is not inserted into the recess 5d1. In this state, the back tilting function is not exhibited.

The first operating portion 14 is used to switch the first gas spring GS1 between the free / locked state and the pressing member 8
In this embodiment, when the first operation portion 14 is operated in a certain direction, the first gas spring GS1 is set in the free state and the pressing member is switched. Is positioned at the pressing position, and when the first operation portion 14 is operated in the opposite direction, the first gas spring GS1 is locked and the pressing member 8 is positioned at the non-pressing position.

Next, as shown in FIG. 1, the back seat boundary portion moving function is a function that can change the rear inclination angle of the seating surface and the front-rear projection dimension of the lower part of the backrest surface, and can be tilted rearward of the seat support 4a. The tilting body 12 disposed and the lumbar support arm 13 integrally provided at the rear end of the tilting body 12 are used.

The tilting body 12 is a pair of left and right frame members which extend forward and rearward and are arranged below a rear end of a cushion or the like constituting the seating surface 4b. It is rotatably connected to the rod 5 (lower frame 5c). Then, the rear part 4b1 of the seating surface is connected to the front part 4b of the seating surface.
A lower position L (shown by a solid line in FIG. 1), which is substantially flush with 2, and an upper position U (shown by a two-dot chain line in FIG. 1) in which the rear end of the seating surface 4b1 is higher than the front end. ) To be tiltable.

The lumbar support arm 13 is viewed from the side,
It is a frame-like member that is bent at a substantially right angle from the rear end of the tilting body 12 and extends integrally, and supports the tension member 5b that forms the lower part of the backrest surface from right and left. And, as the tilting body 12 moves from the lower position L to the upper position U, it projects forward,
The lower part of the backrest surface is made to protrude forward while increasing the tension of the tension member 5b at that portion. The lumbar support arm 13 has a bent portion 13a that is bent in an arc shape rearward at the distal end portion to improve the sensation of contact with the lumbar bone.

In this embodiment, a switching mechanism K for switching the operation / non-operation of the back seat boundary portion moving function is provided.
5 are provided. By operating a switching button B5 provided at an end of the second gas spring GS2, the switching mechanism K5 is a second expansion / contraction member that can be switched between an elastic free state and a locked state where the length is fixed. It is configured using a gas spring GS2. One end of the second gas spring GS2 is rotatably connected to a connecting shaft t1 between the back support rod 5a (more specifically, the lower frame 5c) and the seat support 4a, and the other end of the second gas spring GS2 is the back of the tilting body 12. It is rotatably coupled to a portion deviated from the coupling axis t5 with the support rod 5a. In this embodiment, in a state where the second gas spring GS2 is in a free state,
A force for forward tilting movement is applied to the tilting body 12 by the extension force. The switch button B5 is connected to a second operation unit 15 described later via a link wire W2. By operating the second operation unit 15, the state of the second gas spring GS2 is switched, and the back seat boundary portion Can be switched between a state in which it can be moved or deformed and a state in which the back seat boundary portion is fixed in a desired form.

The seat elevating function is a function of elevating and lowering the back seats 4 and 5. The support column 2a constituting the base leg 2 is formed by using a third gas spring GS3 (shown in FIG. 7). The length of the column 2a is changed by the expansion and contraction of the spring GS3, and the back seats 4, 5 are raised and lowered. The switching operation of the third gas spring GS3 is performed by a fourth operation unit 17 described later.

In the present embodiment, as shown in FIG. 7, the first to fourth operation units 14 to 17 are arranged in a line from front to rear in this order from the rear to the front, so that the lower part of the right edge of the seat is located at the lower part. Are collectively arranged.

As shown in FIGS. 5 to 10, each of the operation units 14 to 17 has a rectangular thin plate shape, and has the same shape as each other except for a base end portion. The base end is rotatably supported around a horizontal axis extending in the front-rear direction by the operating part support frame 18 fixed to the seat 4a. Is set to In the same horizontal position, the operating end is
It is also made to be the same height. And each operation unit 1
The rotation axes 4 to 17 are set to be aligned on the same line.

As described above, the first operating section 14 is for switching the operation of the locking function between in and out, and for fixing the back seats 4 and 5 at a desired locking angle. It is also for switching between activation and deactivation. Then, as shown in FIG. 8, a horizontal posture in which the operation end protrudes outward (solid line in FIG. 8) and a vertical posture in which the operation end is rotated downward from this horizontal posture (dashed line in FIG. 8). A stable toggle operation is performed in two postures. Specifically, the connecting point 14a of the link wire W1 with respect to the first operating unit 14 is a portion deviated from the rotation center 19 of the first operating unit 14, and the first operating unit 14 has a horizontal posture and a vertical posture. The tube fixing point 18a1 provided on the operation unit support frame 18 with the rotation between
It is set at a position that straddles a virtual line connecting the rotation center 19 of the first operation unit 14 and the first operation unit 14. And to the link wire W1,
The toggle operation is performed by using an elastic member (not shown) or the like so that a force always acts in a direction in which the first operation unit 14 is pulled inward. In the horizontal posture, the locking function is not activated, and in the vertical posture, the locking function is activated. Note that the link wire W1 branches midway and
1a and W1b, which are connected to the rotating arm 10 and the first gas spring GS1, respectively. In addition, unevenness Q is partially provided on the upper surface of the tip so that the finger can be recognized.

As described above, the second operating portion 15 is used to switch the operation of the back seat boundary portion moving function between in and out, and to fix the back seat boundary portion in a desired form. It is connected to the operation button of GS2 via a link wire W2. In a natural state where no external force is applied, this is urged by an elastic member such as a spring (not shown) so as to be in a horizontal posture, and performs an operation like a momentary switch. Then, in this horizontal posture, the second gas spring GS2 is fixed. Then, as shown in FIG. 9, when the operator rotates the end of the second operation portion 15 upward against the urging force, the second gas spring GS2 becomes free and the tilting body 12 and the lumbar support arm 13 can be tilted. In addition, irregularities Q are partially provided on the lower surface of the tip so that the finger can be recognized.

As described above, the third operating portion 16 shown in FIG. 10 moves the forward moving ends of the back seats 4, 5 by the four-side link mechanism K1 to the normal use position where the seating surface 4b is substantially horizontal. , For switching the seating surface 4b to one of the most forwardly inclined positions where the seating surface 4b is slightly inclined forward. Specifically, it is set so that the seating surface 4b can be set to the normal use position when the seat is in the horizontal posture, and can be set to the frontmost inclined position when the seat is in the vertical posture.

As described above, the fourth operation portion 17 is for adjusting the height of the back seats 4, 5, and is connected to the operation button of the third gas spring GS3 via the link wire W4. It is. In a natural state where no external force is applied, this is urged by an elastic member such as a spring (not shown) so as to be in a horizontal posture, and performs an operation like a momentary switch. Then, the third gas spring GS3 is fixed in this horizontal posture. Then, when the operator rotates the end of the fourth operating portion 17 upward against the urging force, the third gas spring GS3 is in a free state and the back seats 4, 5 can be raised and lowered. It is. Further, the lower surface of the end of the fourth operation unit 17 is partially provided with unevenness so that it can be recognized by a finger.

Therefore, according to the present embodiment, the operation unit 1
Since 4 to 17 are arranged collectively, the position is easy to understand, and the operability of the multifunctional chair 1 can be particularly improved. Further, for example, a plurality of operation units 14 can be
17 can be operated at the same time. Each operation unit 14
Since the height in the horizontal posture state of ~ 17 is the same,
By comparing with the positions of the other operation units 14 to 17, the operation states of the operated operation units 14 to 17 can be easily recognized.

Note that the present invention is not limited to the above-described embodiment, and the operation unit is not limited to the above four. For example, when a function of sliding the seating surface back and forth is added, the operability can be improved by providing the operation unit of this function at the same height as the existing operation unit. that time,
It goes without saying that the relative distance between the operation units fluctuates due to the operation such as sliding depending on the attachment position of the new operation unit.

Further, the shape of each operation section does not need to be the same, the width may be changed, and it is needless to say that the arrangement interval is not limited to an equal interval.

[0054]

As described in detail above, according to the present invention,
Since the operation units are collectively arranged, the position is easy to understand, and the operability of a multifunctional chair can be improved. Further, for example, it is possible to provide an unusual usage such that a plurality of operation units can be simultaneously operated with one hand.

Further, if the two or more operation units are arranged in front and rear and arranged below the side edge of the seat, if the seated person extends his hand downward while sitting, he or she naturally touches these operation units. For example, it is possible to provide excellent usability and operability.

Further, the arrangement order of the two or more operation units is as follows:
If it is determined based on the arrangement order of the members that perform the functions that are the operation targets of each operation unit, it is easy for the occupant to understand which operation unit corresponds to which function, and it is easy to remember At the same time, the operation becomes easier.

Similarly, in order to further improve the usability and operability, the two or more operation units may be arranged so as to have the same height, or may have the same shape or substantially the same shape as each other. It is desirable to make the shape of a plate so that it can maintain a horizontal posture, or that the base end is rotatably supported on a seat so that the tip can move up and down.

Further, when two or more operation units are collectively arranged in this manner, it may be impossible to know which operation unit corresponds to which function and how to operate it. However, if a surface that is touched when operating in a predetermined operation direction on the surfaces of the two or more operation units is provided with irregularities, such a danger can be avoided with a simple structure.

[Brief description of the drawings]

FIG. 1 is a schematic overall side view showing a normal position of a chair and a state in which a lower part of a backrest is projected forward in an embodiment of the present invention.

FIG. 2 is a schematic overall side view showing a rearwardly inclined position of the chair in the embodiment.

FIG. 3 is a schematic overall side view showing only the back of the chair in the embodiment in a rearwardly inclined position.

FIG. 4 is a schematic overall side view showing a frontmost tilt position of the chair in the embodiment.

FIG. 5 is a partial perspective view showing the operation unit in the embodiment as viewed from the rear.

FIG. 6 is a partial plan view of the same embodiment as viewed from below the operation unit.

FIG. 7 is a partial perspective view of the operation unit in the embodiment as viewed from below.

FIG. 8 is a partial plan view of the operation unit in the embodiment as viewed from the front.

FIG. 9 is a partial plan view of the operation unit in the embodiment as viewed from the front.

FIG. 10 is a partial plan view of the operation unit in the embodiment as viewed from below.

FIG. 11 is a sectional view of the back tilting mechanism in the embodiment.

FIG. 12 is a sectional view of the back-tilt mechanism in the embodiment.

FIG. 13 is an exploded perspective view of the back tilting mechanism in the embodiment.

FIG. 14 is a schematic perspective view of a forward tilt angle adjusting mechanism in the embodiment.

FIG. 15 is a view showing an operation mode of the forward tilt angle adjusting mechanism in the embodiment.

FIG. 16 is a schematic side view showing the overall configuration of a chair according to the present invention.

FIG. 17 is a schematic bottom view showing the operation unit of the chair according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Chair 4 ... Seat 5 ... Back 14 ... 1st operation part 15 ... 2nd operation part 16 ... 3rd operation part 17 ... 4th operation part

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) A47C 7/62 A47C 7/62 Z (72) Inventor Annette Ponholzer Germany 60594 Frankfurt am Main Schweitzer Strasse 7 FP Design Gaie Mbeher F-term (reference) 3B084 GA01 HA04 HA07 JA07 JC03 3B091 AA05 AB02 AC04 AC09 AD01 JA03

Claims (6)

[Claims] 1. A chair having a plurality of operating parts for mechanically adjusting the height of the back seat and adjusting the rocking, wherein two or more operating parts which are a part or all of the operating parts are located within a predetermined area. A chair characterized by being arranged in a group. 2. A chair having a plurality of operating sections for adjusting the height of the back seat and adjusting the rocking, wherein two or more operating sections, which are part or all of the operating sections, are arranged in front and rear of the seat. A chair arranged below a side edge. 3. The chair according to claim 1, wherein an arrangement order of the two or more operation units is determined based on an arrangement order of members that perform a function to be operated by each operation unit. 4. The chair according to claim 1, wherein the two or more operation sections have the same shape or substantially the same shape. 5. The chair according to claim 1, wherein the surface of the two or more operation parts, which is touched when operating in a predetermined operation direction, is provided with irregularities. 6. The apparatus according to claim 1, wherein the two or more operation units are each capable of maintaining a horizontal posture, and the operation units are arranged at the same height in the state where the horizontal posture is maintained.
The chair according to 2, 3, 4 or 5.