JP3584217B2 - Chair - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a chair capable of moving a seat up and down and stopping at a predetermined height.
[0002]
[Prior art]
A chair capable of moving the seat up and down can be used in a state optimal for various uses. The chair that achieves this has various structures that can move the seat up and down and stop at the moved position. Chairs that can freely move the seat up and down are described in, for example, Japanese Utility Model Publication No. 59-27170 and Japanese Utility Model Publication No. 59-27171. In the chairs described in these publications, a seat is connected to a support via a stopper mechanism. In these chairs, the seat is stopped at a predetermined position by a stopper mechanism, and the stopper mechanism is released so that the seat can be moved up and down.
[0003]
[Problems to be solved by the invention]
In these chairs, the locking state of the stopper mechanism is released by operating the handle, and the seat can be moved up and down. However, in this chair, a stopper mechanism for stopping the seat at a predetermined position is complicated, and the manufacturing cost is increased. In addition, since a complicated stopper mechanism is provided, the whole cannot be made a neat and beautiful design. Further, there is a disadvantage that the handle cannot be easily moved up and down because the handle needs to be operated to release the locked state. In particular, there is a disadvantage that it is difficult to move the seat up and down with one hand.
[0004]
The present invention has been developed to solve such disadvantages. It is an important object of the present invention that the seat can be stopped firmly at a predetermined height with a very simple mechanism, furthermore, the manufacturing cost can be reduced and the overall design can be made very clean and simple and easy. Another object of the present invention is to provide a chair that can quickly move a seat to an optimum height.
[0005]
[Means for Solving the Problems]
The chair according to the present invention includes a support column 1 that is self-supporting in a posture that is inclined upward and rearward, and a seat 2 that is connected to the support column 1 via a connector 4 so as to be able to move up and down. The column 1 has a cylindrical shape, and extends vertically and has a slit 8 on the front surface. The connecting tool 4 includes an upper and lower base 5 that connects the seat 2 and an inner side that is connected to the upper and lower bases 5, penetrates the slit 8 of the column 1, and contacts the inner surface of the column 1 on both sides of the slit 8. It has a stopper 6 and an outer stopper 7 connected to the upper and lower bases 5 and abutting on both sides of the slit 8 on the front surface of the column 1. The outer stopper 7 is located below the inner stopper 6 and is connected to the upper and lower bases 5. The distance between the inner stopper 6 and the outer stopper 7 is larger than the wall thickness of the column 1 so that the vertical platform 5 can be moved up and down along the column 1. In this chair, when a load is applied to the seat 2, the inner stopper 6 and the inner surface of the column 1 are pressed, and the outer stopper 7 is pressed against the front surface of the column 1, so that the chair 2 does not fall down to a predetermined height. Now you can stop.
[0006]
The column 1 can be any of a square tube, a cylinder, and an elliptic tube. The inner stopper 6 connects the L fittings . The outer stopper 7 can be shaped to be in surface contact with the front surface of the column 1. The inner stopper 6 can be shaped to be in surface contact with the inner surface of the column 1.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiments described below exemplify chairs for embodying the technical idea of the present invention, and the present invention does not specify chairs as follows.
[0008]
Further, in this specification, in order to make it easy to understand the claims, the numbers corresponding to the members shown in the embodiments are referred to as “claims” and “means for solving the problems”. Are added to the members indicated by "." However, the members described in the claims are not limited to the members of the embodiments.
[0009]
The chair shown in FIG. 1 includes a column 1 and a seat 2 connected to the column 1 so as to be able to move up and down.
[0010]
The support column 1 is connected to a support rod 3 at the rear, supported by the support rod 3, and is self-supporting in a posture inclined upward and rearward. The support rod 3 is connected to the column 1 so as to be foldable by a pin 18 so that the column can be folded in a direction parallel to the column 1. At the lower end of the column 1, a horizontal rod 9 protruding left and right is fixed. The horizontal rod 9 prevents the column 1 from falling sideways. The column 1 is self-supported by the horizontal rod 9 and the support rod 3 so as not to fall down front, back, left and right. Further, the column 1 shown in the figure has a handle 10 at the upper end. The handle 10 shown in the figure is a circular annular loop, from which the chair can be carried.
[0011]
The support 1 is a single metal square tube, that is, a square pipe. This support 1 has a slit 8 on the front surface. The slit 8 moves the seat base 2 up and down, and extends in the up-down direction and is provided at the center of the front surface. The column 1 which is a rectangular tube has a feature that the column 2 is prevented from rotating in the horizontal plane and can be firmly connected to the column 1. However, the support may be a cylinder or an elliptical cylinder. The cylindrical or elliptical column can also have a structure in which the seat is prevented from rotating in a horizontal plane at a practical level.
[0012]
The seat 2 is connected to the column 1 via a connecting tool 4 so as to be able to move up and down. The connecting tool 4 includes an upper and lower base 5 that connects the seat 2 and an inner side that is connected to the upper and lower bases 5, penetrates the slit 8 of the column 1, and contacts the inner surface of the column 1 on both sides of the slit 8. It has a stopper 6 and an outer stopper 7 connected to the upper and lower bases 5 and abutting on both sides of the slit 8 on the front surface of the column 1.
[0013]
As shown in FIG. 2, the connecting tool 4 connects the two L metal fittings back to back, and the upper and lower base 5 and the inner stopper 6 have an integral structure. The two L brackets penetrate the slit 8 of the column 1, serve as an inner stopper 6 inside the column 1, and a portion projecting outside the column 1 is an upper and lower base 5. The inner stopper 6 of this structure can be arranged from the slit 8 to the inside of the column 1 without extending the slit 8 to the upper end of the column 1. This is because two L metal fittings can be separately inserted into the column 1 from the slit 8 and then connected to the upper and lower bases 5 by screws. The strut 1 that does not extend the slit 8 to the upper end can be connected in a cylindrical shape at the upper end to form a strong structure.
[0014]
The outer stopper 7 is located below the inner stopper 6 and is connected to the upper and lower bases 5. The outer stopper 7 in FIG. 3 is connected to the upper and lower bases 5 via the arm 11 so as to be rotatable in a vertical plane. The arms 11 of the outer stopper 7 are located on both sides of the upper and lower tables 5 and are connected to the upper and lower tables 5 via the rotating pins 12. The outer stopper 7 has a rubber plate 13, which is a hard-to-slip material, fixed to a surface of the column 1 facing the column 1 and facing the surface of the column 1. The rubber plate 13 has features that it can reliably prevent the upper and lower bases 5 from descending while being pressed against the surface of the column 1, and also prevent the surface of the column 1 from being damaged. As the rubber plate, a rubber plate of a permanent magnet can be used. The rubber plate is attracted to the iron pillar, and can prevent slippage with the upper and lower stands. The rotatable outer stopper 7 can make surface contact with the rubber plate 13 along the surface of the column 1. When the rubber plate 13 is brought into surface contact, the rotation of the outer stopper 7 is prevented. Therefore, the outer stopper 7 can rotate, but cannot freely rotate, and is stopped at a position where the rubber plate 13 abuts on the column 1. Although the connecting member 4 shown in the figure is connected to the upper and lower bases 5 so that the outer stopper 7 can rotate, the outer stopper can be fixed to the upper and lower bases so as not to rotate.
[0015]
The distance (d) between the inner stopper 6 and the outer stopper 7 is larger than the wall thickness (t) of the column 1 so that the vertical platform 5 can be moved up and down along the column 1. When the connecting tool 4 is rotated in the direction indicated by the arrow A in FIG. 3, the outer stopper 7 does not press the front surface of the support 1, and the connecting tool 4 can be moved up and down along the support 1. When a load is applied to the seat 2, a rotational moment acts on the connecting member 4 in the direction indicated by the arrow B. This rotational moment presses the outer stopper 7 against the front surface of the column 1 and presses the inner stopper 6 against the inner surface of the column 1. In this state, the seat 2 is stopped in a horizontal posture as shown in FIG.
[0016]
The chair of FIG. 3 is connected to the upper and lower pedestals 5 so that the seat 2 can be folded. The seat 2 shown in the figure has a protruding portion 14 provided at the rear end, and is connected via a rotation pin 15 so that the protruding portion 14 can be turned to the upper and lower stands 5. In this chair, the seat 2 can be folded in the direction indicated by the arrow C in FIG. The protrusions 14 are located on both sides of the upper and lower bases 5. In other words, the upper and lower bases 5 are arranged between the protruding parts 14, and the protruding parts 14 of the seat base 2 and the upper and lower bases 5 are penetrated through the rotating pins 15 and connected so as to be foldable. The foldable seat 2 is stopped in a horizontal posture as shown in FIG. 4, and is folded upward from this posture as shown in FIG. A stopper 16 is provided on the protruding portion 14 to stop the seat 2 in a horizontal posture. The stopper 16 holds the seat 2 in a horizontal posture by hitting the vertical surface 5A of the upper and lower supports 5 in a state where the seat 2 is in a horizontal posture. As shown in FIG. 3, a pusher 17 for pressing the outer stopper 7 can be fixed to the seat 2. The pusher 17 presses the outer stopper 7 toward the column 1 with the seat 2 horizontal. For this reason, the outer stopper 7 is strongly pressed against the column 1 to prevent slippage. In the illustrated chair, a pusher 17 is fixed to a stopper 16. The pusher 17 pushes the arm 11, which is the outer stopper 7, from the back, and presses the outer stopper 7 against the column 1. Further, as shown in FIG. 6, the arm 11 of the outer stopper 7 can be elongated to have a handle shape. The arm 11 is fixed to the upper and lower bases 5, and a rubber plate 13 is fixed to a lower end surface of the arm 11 in contact with the column 1. This chair can be conveniently carried using the arm 11 as a handle.
[0017]
In the chair described above, since the column 1 is a rectangular tube, the surface where the inner stopper 6 and the outer stopper 7 abut on the column 1 is flat. In a chair having a column or an elliptical cylinder as a support, the inner stopper and the outer stopper are shaped to be in surface contact with the surface of the cylinder or the elliptical cylinder.
[0018]
【The invention's effect】
The chair of the present invention has a feature that the seat can be firmly stopped at a predetermined height with a very simple mechanism. That is, the chair of the present invention is provided with a slit extending up and down on the front surface of a self-standing cylindrical column, and connecting the seat through a connecting tool that moves up and down along the slit, This connecting tool has an inner stopper that penetrates through a slit of a column and abuts on an inner surface of the column, and an outer stopper that abuts on a front surface of the column. It is because it is located and connected. In the chair having this structure, when a load is applied to the seat, the inner stopper presses the inner surface of the support and the outer stopper presses the front of the support, so that the chair can be stopped at a predetermined height without lowering the seat. Further, in the chair according to the present invention, since the distance between the inner stopper and the outer stopper is made larger than the thickness of the support, the upper and lower bases can be easily moved up and down along the support, so that the seat can be quickly and optimally adjusted. There is a feature that can move to the height. Furthermore, the chair of the present invention has a feature that the manufacturing cost can be reduced and the overall design can be made very clean and beautiful by adopting an extremely simple structure.
[Brief description of the drawings]
FIG. 1 is a perspective view of a chair according to an embodiment of the present invention. FIG. 2 is a horizontal cross-sectional view showing a coupling of the chair shown in FIG. 1. FIG. 3 is a vertical cross-sectional view showing a coupling of the chair shown in FIG. 4 is a vertical sectional view showing a state where the seat base of the chair shown in FIG. 3 is stopped. FIG. 5 is a vertical sectional view showing a state where the seat base of the chair shown in FIG. 3 is folded. FIG. 6 is another embodiment of the present invention. Vertical sectional view showing a state where the seat of the example chair is stopped.
DESCRIPTION OF SYMBOLS 1 ... Support 2 ... Seat 3 ... Support rod 4 ... Connecting tool 5 ... Upper and lower base 5A ... Vertical surface 6 ... Inner stopper 7 ... Outer stopper 8 ... Slit 9 ... Horizontal rod 10 ... Handle 11 ... Arm 12 ... Rotating pin 13 ... Rubber plate 14 ... Protrusion 15 ... Rotating pin 16 ... Stopper 17 ... Pusher 18 ... Pin

Claims (4)

A support (1) that is self-supporting in a posture that is inclined upward on the rear side, and a seat (2) that is connected to the support (1) so as to be able to move up and down via a connector (4). Prepare,
The strut (1) has a cylindrical shape and extends vertically and is provided with a slit (8) on the front surface.The connecting tool (4) is composed of an upper and lower base (5) connecting the seat (2), An inner stopper ( L ) which is connected to the upper and lower bases (5), penetrates through the slit (8) of the support (1), and connects L brackets that contact the inner surface of the support (1) on both sides of the slit (8). 6), and an outer stopper (7) connected to the upper and lower bases (5) and abutting on both sides of the slit (8) at the front surface of the column (1), and the outer stopper (7) is provided with the inner stopper (6). ), And is connected to the upper and lower bases (5) .The distance (d) between the inner stopper (6) and the outer stopper (7) is determined by moving the upper and lower bases (5) along the columns (1). It is larger than the thickness (t) of the column (1) so that it can move up and down, and when a load is applied to the seat (1), the inner stopper (6) and the inner surface of the column (1) are pressed and the outer stopper Stop at a predetermined height so that (7) is pressed against the front of the support (1) and does not descend the seat (2). Chair formed by the so that. The chair according to claim 1, wherein the support (1) is one of a square tube, a cylinder, and an elliptic tube. The chair according to claim 1, wherein the outer stopper (7) is shaped to make surface contact with the front surface of the column (1). The chair according to claim 1, wherein the inner stopper (6) is shaped to make surface contact with the inner surface of the column (1).

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