JPS63109817A - Chair - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is characterized in that the front part of the front seat is fixed in a tiltable manner around an axis running transversely to the base, and the front part of the front seat is tiltably fixed to the base. This relates to a chair that has a shape that allows it to tilt relative to its front seat.

(Prior Art) This type of chair is known from German Publication Box No. 2822574 (
DE-032822574>.

In the case of this famous chair, the angle between the backrest and the rear seat can easily be changed by adjusting the seat inclination, so adjusting the seat inclination always changes how the back hits the disc. The correct angle between the rear seat and backrest can only be achieved if the seat surface has a certain degree of inclination.

Therefore, only by adjusting the inclination of the rear seat to a certain degree can you obtain just the right amount of back contact.

Efforts are being made to create chairs, especially for office use, that allow people to sit in a way that is comfortable for their body, in order to prevent injury to the body from sitting incorrectly and to improve sitting comfort. In this case, what should be taken into consideration is that people do not always maintain the same posture, but rather change their posture from time to time.

(Problem to be Solved by the Invention) Therefore, it is an object of the present invention to propose a chair that allows for ergonomic adjustment of the sitting position and at the same time active support of the body in all postures. be.

(Means for solving the problem) This problem was solved by the present invention as follows. In other words, the chair is equipped with a front seat and a back seat, and the angle-shaped lever is housed in such a way that it can rotate around a bearing attached to the lower part of the front seat, and the rear end of the lever is attached to the rear seat. It is in the form of a support base for the seat, which extends upward to form a single plate-shaped seat, and furthermore, the lower part of the rear seat has a solid beam at the rear of the front seat. is connected to this lever.

The fact that the rear part of the seat is in the form of an integrated disc seat ensures a stable back, regardless of the angle at which the rear seat and, with it, the disc seat are inclined. This means that the degree of impact or support can be secured.

Therefore, according to the present invention, it is possible to provide a sense of stability to the body no matter how much you move, and also to provide support that prevents tension and stiffness of the back muscles and the resulting fatigue. This prevents the problems that would otherwise appear in the long run.

Adjust this chair as follows.

When tilting the lever in the form of a wide-surfaced plate in the direction of the bearing, the rear part and thereby also the disc-shaped seat are simultaneously tilted by the same angle.

By tilting the lever, the front seat can also be adjusted at that angle. This front seat tilt adjustment has a smaller angle than the rear seat tilt adjustment. This is because the front seat is tightly connected to the lever (so that it does not bend at all). On the contrary, only the beam that is firmly connected to the rear part of the front seat is connected to this lever.

Therefore, when the lever is tilted, this connected beam is moved up and down according to the movement of the lever. However, in that case, the front seat is tilted in its front range.

Since the bearing is attached under the front seat, the tilt of the rear beam of the front seat acts up and down. Note that the inclination adjustment angle of the front seat is relatively small. This is because this connection point is further from the front pivot axis of the front seat than from the bearing.

When tilting the lever to tilt the rear seat and the plate-shaped seat together with it, the desired effect can be obtained by making the tilt larger than in the case of the front seat.

When adjusting the seat inclination, a change in the inclination of the rear seat is related to a small change in the inclination of the front seat. Therefore, the backrest connected to both seats and the rear seat is synchronously adjusted. Therefore,
For example, in addition to making both seats horizontal, it is also possible to tilt the front seat to, for example, -5 degrees and the rear seat to, for example, -15 degrees.

The farther apart the bearings under the front seat are in the rear part of the front seat, and in the case of lever bearings, the closer the connection point of the rear lever of the front seat is, the closer the distance between the front seat and the rear seat is. The relative slope change rate increases. By understanding this length ratio, the desired relative seat inclination change can be adjusted.

This chair can be made according to the invention as follows. That is, the rear end of the front seat and the front end of the back seat create a gap that runs horizontally across the entire chair. Note that this gap is hidden by a filling or covering material.

The backrest is connected to the upper part of the seat plate by the method of the invention and can be fixed or tiltable relative to it, depending on the choice.

Furthermore, the invention has the advantage that it allows direct adjustment of the front and rear seats as well as of the back that is connected to the rear seat.

At the same time, there is also the advantage that the chair can be manufactured economically using fewer components.

In the present invention, the adjustment mechanism is substantially inside the support pipe. A shoe is attached to the inside of the support pipe in such a way that the lever can be rotated. A chair with such a support has a series of advantages:

First, the chair can be attached to a support pipe, so no standing leg is required. Furthermore, it is possible to attach many such chairs to a single pipe passing through the pipe. And by this method it is possible to easily produce a complete seat or a number of consecutive seats with a chair according to the invention on such a pipe.

This method or structure has the advantage that the floor can be freely accessed during cleaning. Additionally, not every individual chair requires more than one or more legs, resulting in considerable savings in terms of materials.

Another advantage of placing the adjustment mechanism inside the pipe in this way is that the adjustment fi @ is protected, and secondly, it protects the adjustment mechanism from accidentally getting your fingers or hands caught. It is that you are.

The lever can extend within the support pipe substantially over the width of the seat, so that the rear seat can be easily and securely supported.

This chair can be initially brought into a desired position or posture by means of springs HtH. According to another feature of the invention, one or more compression springs are provided under the lever running from the bearing to the rear end of the rear seat. These compression springs make it possible to bring the chair up to its one end position, in which case the rear end of the front seat and the rear end of the back seat also occupy their respective highest positions. The seat and back inclination can be changed as a synchronous movement by shifting your weight. In such a construction, the chair according to the invention can also be used as a semi-rocking chair.

It is also directly threaded so that the pressure of the compression spring mentioned above can be varied. Therefore, the force of the spring can be adjusted freely according to the weight of the person using the chair.

In the present invention, there is a spring inside the case between its front part and the lower end of the front lever. And if this spring is a compression spring, it acts just like the small compression spring (above) below the rear lever under the support pipe.

The spring located in the case between the front case and the lower end of the front lever may be attached as an adjunct to the previously mentioned compression spring below the rear lever, or as a single spring. Can be done.

The spring in the case is a gas spring. When you push the release lever of this gas spring inward, it functions like a normal spring. The chair can be used as a rocking chair in this state.

However, when I release the gas spring release lever, the chair stops.

It is also possible to use a gas spring that acts only as a blocking force (no pushing force). This has made it possible to use cheaper gas springs. In the present invention, a release mechanism is provided to enable activation of the release lever of the gas spring. And this solution tIIi
When Re is activated, the release lever of the gas spring is moved, thereby making it possible to adjust the seat inclination. When the release gate is to be released again, the stop gas spring will now stop the seat in the adjusted position.

In the present invention, there is a pivotable spring shackle that allows the free end of the release mechanism to be stopped in its release position. Therefore, this chair can be used as a quasi-rocking chair.

Furthermore, the invention provides a chair with an adjustable seat and also an adjustable backrest, which is very easy to assemble. This chair has the following features:

In other words, the seat is attached to the case in such a way that it can pivot around the front part, and the angle-shaped lever connected to the back bar is housed in a way that it can pivot around the bearing attached to the bottom of the seat. and that the rigid beam of the seat is connected to this lever in the rear part of the bearing.

When the lever tilts (swivels) around the bearing, the back bar connected to the lever also tilts. In this pivoting movement, the seat also tilts, but only at a different angle than the back bar. Depending on the joint dimensions between the seat, lever, and back bar, when the rear of the seat is tilted, the adjustment movement can be synchronously controlled so that the back bar is tilted significantly downward, making it possible to lean back. A comfortable sitting position can be ensured.

This form of the invention also has subsequent developments comparable to those previously described regarding the round shape of this chair with a separate seat. Therefore, if the lever, which is called a two-arm lever, can be made, it is also possible to attach one or more springs as described above.

(Example) Examples of the present invention will be described in detail below in conjunction with the drawings.

As shown in Figures 1 and 2, the seat of the chair of the present invention is divided into front and rear parts, consisting of a front seat 18 and a back seat 20, and the two seats are not directly connected to each other, but have a space between them. A small gap 22 is the opening.

The rear part of each seat 20 is arched upward, thereby forming a disk-shaped seat. A backrest 25 is fixed to the upper end 24 of the plate-shaped seat.

A pad 26 is attached to the backrest 25.

From FIGS. 1 and 2, the basic elements of the adjustment 't-1+M can be seen.

A two-armed lever 32, 34, described in more detail with reference to FIG. 3, hereinafter referred to as the support shoe, is mounted for rotation about an axis of rotation 30. The first rear lever 32 is assembled in an angular manner from the axis of rotation 30, first obliquely upwards and then downwards. A second front lever 34 extends substantially downwardly and somewhat forwardly from the axis of rotation 30.

The rear part of the rear lever 32 is parallel to the rear seat 20,
It is firmly attached to this rear seat. When the lever 32.34 is tilted, the entire rear seat 20 and other plate-like seats 24 are thereby aligned with the lever 32.34! Goke 1st time.

Inside the support pipe 16, a compression spring 38 is attached to the rear lever 3.
2, and the spring force of this spring balances the load caused by the person sitting on the chair.

The front seat 18 is rotatably housed above an axis 50 (FIG. 2). A rigid and unbendable beam 78,78 is fixed to both sides of the rear end of the front seat 18, and this beam is connected to the rear lever 3 at the connection point 44 shown in FIG.
It is connected to 2.

As can be seen from FIG. 2, the distance between the axis of rotation 30 and the connection point 44 is much shorter than the distance between this connection point and the axis 50. When the levers 32, 34 are tilted, the front seat 18 moves on its axis 50.
Tilt around the center. Therefore, when the levers 32, 34 are tilted clockwise in FIG.
Tilt by a smaller angle. At the same time, the two seat surfaces 18
In this example, where the inclinations or inclination changes of 20 and 20 occur in a fixed relationship or proportion to each other, a gas spring 48 is provided as shown in FIGS. It is connected to the lever 34, and its front end is connected to the shaft 50. The shaft 50 is parallel to the rotating shaft 30, and both left and right ends are fixed to the case 14 at positions 52.

In FIGS. 2 and 3, the base of the chair consists of a support pipe 16 which extends from its center to the left in FIG. 3 as a case 14.

Note that a shaft 50 is provided at 52 in the front part of the case. Also visible in FIG. 3 is a gas spring 48 whose rear end is rotatably connected to the front lever 34 at the slit 36 and whose front end is fixed to the shaft 50.

3, it can be seen that there is a portion of the release mechanism for the gas spring 48. This temple structure essentially consists of one angular rotary lever 58. The left side of the rotary lever is parallel to the support pipe 16, and when the rotary lever 58 is tilted 60 degrees, the release plug 56 is pushed into the gas spring 48 and released.

There is an operating lever 62 at the right end of the rotary lever 58, which allows the right end of the rotary lever 58 to be pushed downward and released.

In Fig. 3, 64 is a bearing, and this bearing includes:
A shoe 13, which will be explained in more detail in FIG. 4, is rotatably connected.

On the right side of the bearing 64 (FIG. 3) there is a seat 66 shown in broken lines, which is located between the lower side of the support pipe 16 and the shoe 13.
The receptacle is provided to receive a compression spring 38 between the two.

The shoe 13 will be explained with reference to FIG. 4. This shoe consists of the levers 32 and 34 mentioned above. This part of the shoe, designated in FIG. 2 as the front lever 32, consists of a plate which is pivotally connected to the support pipe 16 through two bearings 64, 64. On the underside of this shoe are four compression spring receivers 68. ... is provided, and its rear end is in contact with a corresponding seat 66 inside the support pipe 16, and the shoe 13 is connected to a bearing 64.
Center and push counterclockwise. Note that there are a number of reinforcing ribs 70 on the underside of the shoe.

FIG. 5 shows a cross section taken along the line v-V in FIG. It is being

The shoe 13 is also rotatably fixed to the support pipe 16 at a bearing 64. The rear end of a solid beam 78, which is connected to the rear end of the front seat 18 on the right side of the coil spring receiver 68, is pivotably fixed in a hole 74 (FIG. 5).

FIG. 6 shows a cross section taken along the line Vl--Vl in FIG. 4. The rear lever 32 of the shoe 13 is rotatably connected to the support pipe 16 through a bearing 64 that supports the rotating shaft 30. A hole 74 for hanging a beam 78 is provided on the right side of the spring receiver 68 in FIG. In addition,
The beam 78 is connected to the rear end of the front seat 18 without bending.

This solid beam 78 is depicted in side view in FIG. 7 and in plan view in FIG.

The beam 78 has a slot 76 at one end and is fixed at the other end to the front end of the front seat 18 through a plate 80 and by two screws 82, 82 (see FIG. 3).

The beam 78 and the shoe 13 are connected to the hole 74 and the elongated hole 76.
They are connected by a bolt 84 that passes through them.

The elongated hole 76 of the beam 78 must be an elongated hole. This is when adjusting the inclination of the seat surfaces 18 and 20.
This is because they move with each other and the distance between them changes.

However, according to the invention it is also possible to adjust the seating depth.

This sitting depth adjustment can be performed by moving the front seat 18 relative to the rear seat 20.

For this reason, in part, the elongated hole 76 in the beam 78 is longer.

For this purpose, the front fixed part of the front seat 18 is also movable, which is shown in more detail in FIG.

Aluminum parts 86 are fixed to both ends of the shaft 50, which can also be a sleeve, with claw parts 88 protruding toward the case 14. This aluminum part 86 has a slide plate 92.
There is a guide slit 90 that supports and guides. It should be noted that this slide plate has a bolt 1- projecting downward on its side, and this bolt is guided into the slit 90 thereof. Slide play]・92 is firmly fixed to the front seat 18 with screws.

When the slide play 1-92 is shifted to the left, the front seat 18 moves from the rear seat 20 to the left. In this case, the elongated hole 76 also moves to the left relative to the hole 74.

For this reason, the sitting depth increases.

When moving slide play 1/92 to the right, open seat 1
8 similarly moves to the right, thereby moving toward the rear seat 20. In this case, the gap between the front seat and the back seat becomes narrower, and the seating depth also becomes smaller.

Fixation screws 94 are used to secure the chair in the desired seating depth adjustment position.

An example of Haku is shown in Figure 9.10. In this example, the seating surface is not separated, but rather has a unified opening. The same reference numerals in this example are used as those in the drawings described in the above example.

As shown in the schematic diagram of FIG. 9, the rear part 103 of the opening 102 is pulled upward. This opening 102 is housed in such a way that its front part can rotate around an axis. A two-arm lever 32,34, whose rear end of the platen 102 enters the back par 104, is pivotably housed in a bearing 64. The beam 106 is rigidly connected at one end to the platen 102, and at its other end is connected in a pivotable manner through a slot 108 and by a pin in a hole 109 of the lever 32.34. This connection point is behind the bearing 64 and therefore rotates! t
It comes after t30. The levers 32 and 34 located at the positions shown in solid lines in FIG.
4 is also tilted, but the angle is relatively large. Lowering the rear part of the seat 1102, ie pivoting the lever 32.34 clockwise from the position depicted in dashed lines, changes the inclination of the platen 102, albeit by a smaller angle than that of the back par 104.

Therefore, this chair has the advantage that in the reclining position, the angle between the platen and the back par is relatively large, so that a relaxed and comfortable posture can be ensured.

(Effects of the Invention) As explained above, according to the present invention, it is possible to provide a chair that is comfortable to sit on and allows a sitting style that suits the body.

[Brief explanation of the drawing]

Fig. 1 is a side view of a chair showing an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the main parts, Fig. 3 is a plan view of the main parts, and Fig. 4 is a plan view of a two-arm lever, also called a shoe. , Fig. 5 is a sectional view taken along the line v-v in Fig. 4, Fig. 6 is a sectional view taken along the line Vl-VI in Fig. 4, Fig. 7 is a side view of the beam, and Fig. 8 is a sectional view taken along the line Vl-VI in Fig. 4. FIG. 9 is a sectional view of essential parts showing another example of the present invention, and FIG. 10 is a perspective view of the example shown in FIG. 9. 10... Strut, 14... Case, 16...
・Support pipe, 18...front seat, 20...rear seat,
22...Gap, 2/1...Plate-shaped seat, 2
5... Backrest, 30... Rotating shaft, 32.34... Angled lever (32... Rear lever, 34... Front lever) 38
...Compression spring, 4B...Gas spring 56...Release plug, 58.59.62...Release mechanism, 64...Bearing, 78...Beam, 86...
・Plate, 90...Guide slit, 92・
...Slide plate, 102... Seat (pressing plate), 104... Back par, 106... Beam. that's all

Claims (1)

[Claims] 1. Front seat (18), rear seat (20) and angle lever (
32, 34), the front seat is mounted in a tiltable manner around an axis (50) running transversely to the case (14) in its front part, and The seat is arranged in such a way that it can be tilted with respect to the front seat, and the angle lever is housed in such a way that it can pivot around a bearing (64) attached to the lower part of the front seat. 32) The rear end is shaped to support a rear seat (20), and the rear seat is shaped like a plate-shaped seat or abutment (20, 24) extending upward. A solid beam (78) at the rear of the front seat (18) is connected to the lever (32) in the area below the rear seat (20), and the front seat and the rear seat are linked to the angled lever. The chair is characterized in that the front seat is tiltable in a proportional relationship with the back seat. 2. The chair according to claim 1, characterized in that a bearing (64) is attached to the lower seat at the rear of the front seat (18). 3. A chair according to claim 1, characterized in that the rear end of the front seat (18), together with the front end of the rear seat (20), forms a gap (22) that runs laterally across the entire chair. . 4. In claim 1, the backrest (25)
is connected to the upper part of the board-shaped seat part (20, 24). 5. In claim 1, the lever (32, 3
The case (14) connected to the support pipe (1)
6) A chair characterized by being attached as a base. 6. The chair according to claim 1, characterized in that a compression spring (38) is attached at the bottom of the lever (32) and behind the shaft of the bearing (64). 7. The chair according to claim 6, characterized in that it is equipped with a pressure adjustment screw for a compression spring. 8. In claim 1, the lever is a two-armed lever (32, 34), the front lever (34) of which extends substantially downwardly and/or forwardly from the bearing (64). A chair characterized by: 9. In claim 8, the support pipe (16
) and the front lever (34) protruding from the front of the case (14).
) and a spring (48) between the lower end of the chair. 10. The chair according to claim 9, characterized in that the spring is a gas compression spring (48). 11. The chair according to claim 10, characterized in that the spring is a gas spring that only acts as a blocking element. 12. In claim 10, the spring release plug (
A chair characterized in that it is equipped with a release mechanism (62, 59, 58) for moving the chair. 13. Chair according to claim 12, characterized in that the lever device (62) for releasing the spring in its release position is of a lockable form. 14. Chair according to claim 1, characterized in that the chair is a single seat on a support pipe (16). 15. A chair according to claim 14, characterized in that a number of single seats are arranged on one support pipe (16). 16. In claim 14 or 15,
A chair characterized by a single seat with a support pipe (16) on one post (10). 17. In claim 1, the front seat (18) is provided with a seat height adjusting device (50, 76, 80,
82, 84, 86, 88, 90, 92). 18. In claim 17, the seat height adjustment device includes a slide plate (92), which plate is firmly joined to the front seat (18) and is slidable relative to the case (14). A chair characterized by being attached in a shape that allows it to be attached. 19. In claim 18, case (14)
) is fixed to the front part of the plate (86),
A guide slit (90) for a support base on which the front seat (18) can be slid or tilted.
A chair characterized by: 20. In claim 4, the backrest (25
) is fixed to a plate-shaped seat part (20, 24) in a tiltable manner. 21. A chair with an adjustable seat and (back)rest is
A seat (102) around its front part is rotatably attached to the case, and an angled lever (32, 34) connected to the back bar (104) is rotatably attached to the case. It is housed around a bearing (64) attached to the lower part of the lever, and behind the bearing, a solid beam (106) of its seat (102) is connected to the lever (32, 34). A chair characterized by: 22. In claim 21, the seat (102
) becomes a board-shaped seat part (103) at its rear part. 23. Claim 21 or 22, characterized in that the case (14) is attached to the support pipe (16) as a base and is connected to the lever (32, 34). chair. 24, Claim 21, 22 or 23
Chair according to paragraph 1, characterized in that there is one compression spring (38) behind the shaft of the bearing under the lever (32). 25. The chair according to claim 21, 22, 23 or 24, characterized in that the compression spring is equipped with a screw for pressure adjustment. 26, Claims 21, 22, 23,
Claim 24 or 25, characterized in that the lever is a two-armed lever (32, 34), the front lever of which extends substantially downwardly and/or forwardly from the axis of rotation (30). A chair. 27, Claims 21, 22, 23,
In paragraph 24, paragraph 25 or paragraph 26, the front case (14) of the support pipe (16) and the front lever (
34), characterized in that there is a spring (48) between the ends of the chair. 28, Claims 21, 22, 23,
In paragraph 24, 25, 26 or 27, the spring between the support pipe (16), the front case (14) and the end of the front lever (34) is a gas spring. A chair characterized by: 29, Claims 21, 22, 23,
Section 24, Section 25, Section 26, Section 27 or Section 28
In paragraph 1, the spring between the front of the case (14) and the end of the front lever (34) is a gas-free spring (48) that acts only as a brake. chair. 30, Claims 21, 22, 23,
In paragraph 24, 25, 26, 27, 28 or 29, the gas spring (48) is provided with a release mechanism (62, 58) for moving its release plug (56). A chair characterized by: 31, Claims 21, 22, 23,
Section 24, Section 25, Section 26, Section 27, Section 28,
Chair according to claim 29 or 30, characterized in that the lever device (62) for releasing the gas spring in its release position is of a lockable form. 32, Claims 21, 22, 23,
Section 24, Section 25, Section 26, Section 27, Section 28,
Chair according to claim 29, 30 or 31, characterized in that the top of the support pipe (16) is in the form of a single seat. 33, Claims 21, 22, 23,
Section 24, Section 25, Section 26, Section 27, Section 28,
A chair according to claim 29, 30, 31 or 32, characterized in that a number of single seats are arranged on one support pipe (16). 34, Claims 21, 22, 23,
Section 24, Section 25, Section 26, Section 27, Section 28,
Section 29, Section 30, Section 31, Section 32 or Section 33
Chair according to paragraph 1, characterized in that it is in the form of a single seat with a support pipe (16) on one support.