JPS5847902Y2 - Chair - Google Patents

Description

[Detailed description of the invention] The invention consists of a front support leg and a rear support leg, each of which has wheels installed on both sides of the lower end so that they can roll back and forth, and which intersect in an X-shape, and the intersection is pivoted by a pivot. The upper end of the front support leg is pivotally attached to a bearing provided under the rear end of the seat via a pivot, and the upper end of the rear support leg is movable back and forth relative to the slide frame provided on both sides of the front lower end of the seat. The front end of the U-shaped slide pipe, which is attached on both front sides, is pivotally connected via a pivot to both sides of the front end, and the rear end of the U-shaped slide pipe is connected to a gas spring provided in the longitudinal direction under the seat. By attaching the lower end to the upper end of the front support leg and operating the gas spring lever, the height and angle of the seat as well as the angle of the backrest can be linked with one-touch operation to match the usage posture. This invention relates to a chair that can be used as an ottoman (the footrest is a chair), and will be described in detail below with reference to drawings that are examples.

A front support leg 3 and a rear support leg 4 are provided with wheels 1, 1, 2.2 on both sides of the lower end so as to be able to roll back and forth, and the upper end 5 of the rear support leg 4 is bent upward to provide rear support. A bearing 8 in which the upper half of the legs 4 intersects in an X-shape so that the length thereof is short, and the crossing portion is pivoted by a pivot 6, and the upper end of the front support leg 3 is provided below the rear end of the seat 7.
The upper end of the rear support leg 4, which is made up of two left and right parallel rods, can be moved back and forth with respect to the front and rear slide frames 10 provided on both sides of the lower front of the seat part 7. The rear end of the U-shaped slide pipe 11 is pivoted to both sides of the front end of the slide pipe 11, which is formed in a forward U-shape and is mounted on both front sides, via a pivot shaft 12 and a roller 13.
The rear end of the operating lever 17 is connected to the rear end of the longitudinally movable rod 16 of the gas spring 15 provided at the rear of the lower end of the seat part 7 via the mounting bracket 14, and the rear end of the operating lever 17 is connected to the front end of the mounting bracket 14 of the gas spring 15 via the mounting bracket 14. A drive pin 19 of a gas spring 15 protruding from the front surface of the mounting bracket 14 is pivotably mounted through the screw.

The mounting piece 21, which is protruded from the center of the lower end of the backrest part 20 so as to face diagonally downward and forward, is attached to the upper end of the front support leg 3, and the mounting piece 21 and the front support leg 3 are attached to each other. One end of the body can be removably fixed via a clip screw 22, so that it can also be used as an ottoman.

The gas spring 12 has compressed gas in the piston head inside the cylinder, and normally the screws 1 to 1 and the piston rod are stopped at a position balanced with the spring inside the cylinder, but the drive pin 13 When the piston head inside the cylinder communicates with other parts inside the cylinder by pressing , the piston becomes movable and the gas spring 12
The total length of the gas spring 12 can be expanded and contracted, and in practical terms, when a person is sitting on the seat 6, the total length of the gas spring 12 is shortened by pushing the drive pin 19, and when the person is not seated (no load), the total length of the gas spring 12 is lengthened. It is designed to be.

The present invention consists of a structure as described in -L, and when the seat 7 is not seated, when the operating lever 7 is operated and the drive pin 19 is actuated, the longitudinally movable rod 16 of the gas spring 15 is extended. Then, the U-shaped slide pipe 11 is attached to the seat part 7.
The L of the rear support leg 4 is made up of two left and right parallel rods that move rearward along the slide frame 10 in the lower front-rear direction and are pivotally attached to both sides of the front end of the slide pipe 11 via a pivot 12 and a roller 13, respectively. The ends also move rearward around the pivot 6, and the upper ends of the support legs 3 and rear support legs 4 rotate around the pivot 6 in the direction of closing the legs. will rise as shown in FIG. 2, and at the same time, the back rest part 20, whose lower end attachment piece 21 is attached to the upper end of the front support leg 3, will tilt forward, causing the seat part 7 and the back rest to The angle α with respect to the portion 20 gradually becomes smaller.

Contrary to the above, to lower the seat 7, operate the operating lever 17 around the pivot 18 while seated on the seat 7,
When the drive pin 19 is actuated, the longitudinally movable rod 16 of the gas spring 15 becomes vertically elongated, and as shown in FIG. With this operation, the front support legs 3 fall down, the seat part 7 descends, and at the same time the backrest part 20
is tilted backward and the upper half of the rear support leg 4 is shorter than the front support leg 3, so the front support leg 3 tilts more,
Due to the upper part of the front support leg 3, the rear part of the seat part 7, which supports the lower part of the rear end through the bearing 8 and the pivot shaft 9, gradually sinks from the front part, and at the same time, the seat part 7 and the backrest part 20 The angle α' gradually increases, and the chair can be adjusted steplessly to suit the posture of use with a single touch, providing a chair that is ergonomically compatible.

Further, by removing the attachment piece 21 of the back support part 20 from the upper end of the front support leg 3, it can be used as an ottoman, which is convenient for packing.

[Brief explanation of drawings]

The drawings show an embodiment of the chair according to the present invention; FIG. 1 is a perspective view, FIG. 2 is a side view showing the seat in its highest position, and FIG. 3 is a side view showing the seat in its lowest position. FIG. 4 is an exploded perspective view, and FIG. 5 is a perspective view showing a state in which the U-shaped slide pipe and the upper end of the rear support leg are connected. 1.2 is a wheel, 3 is a front support part, 4 is a rear support part, 5 is an upper end part, 6, 9, 12.18 is a pivot, 7 is a seat part, 8 is a bearing,
10 is a slide frame, 11 is a slide pipe, 13 is a roller, 14 is a mounting bracket, 15 is a gas spring, 16 is a longitudinal movement lever, 17 is an operation lever, 19 is a drive pin, 20 is a backrest part, 21 is a mounting piece , 22 is a grip.

Claims (2)

[Scope of utility model registration request] (1) Wheels 1 and 2 are provided on both sides of the lower end so that they can roll back and forth, and the front support legs 3 and rear support legs 4 intersect in an X-shape,
The intersection part is pivoted by a pivot 6, and the upper end of the support leg 3 is pivoted 9 under the rear end of the seat part 7, and the rear support leg 4
The upper end is pivoted to the front end of a slide pipe 11 mounted so as to be movable back and forth under the front of the seat 7, and the rear end of the slide pipe 11 is provided under the seat in the front-rear direction via a mounting bracket. In the chair connected to the rear end of the gas spring 15,
A mounting piece 21 protruding from the center of the lower end of the back part 20 so as to face diagonally downward and forward is removably attached to the upper end of the front support leg 3 via screws 22, so that the chair can be used as an ottoman. The supporting legs 4 can also be used as
However, by bending the upper end 5 upward to make the upper half of the rear support leg 4 shorter than the upper half of the front support leg 3, the backrest 20 tilts backward as the seat 7 descends. A chair characterized in that the rear part of the seat part 7 is sunk lower than the front part, and the angle between the seat part 7 and the backrest part 20 gradually becomes larger. (2) Utility Model Registration Scope of Claims In the chair according to claim 1, the rear support legs 4 are made up of two left and right parallel rods, and the upper ends thereof are provided on both sides of the lower front side of the seat portion 7. The front end of a slide pipe 11 having a forward U-shape is mounted on both front sides so as to be movable back and forth with respect to the slide frame 10 in the direction, via a pivot shaft 12 and a roller 13, respectively. A chair featuring.