JPH0586324U - Tube body for chairs, etc. - Google Patents

Abstract

(57) [Summary] [Objective] To provide a tube body whose flexibility can be easily adjusted. [Structure] The load supporting tube 10 is placed inside the protective tube 9.
And a pressure adjusting tube 11 adjacent to the tube 10, and a liquid inlet 12 for injecting water into the load supporting tube 10 and a gas inlet 14 for injecting air into the pressure adjusting tube 11. And. By injecting water into the load supporting tube 10 and injecting air into the pressure adjusting tube 11, the tube body 8 is maintained at a predetermined rigidity. By further injecting air into the pressure adjusting tube 11, the internal pressure of the load supporting tube 10 rises, the rigidity of the load supporting tube 10 increases, and the tube body 8 becomes hard. By discharging the air in the pressure adjusting tube 11, the internal pressure of the load supporting tube 10 is lowered, so that the tube body 8 becomes soft.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 TECHNICAL FIELD The present invention relates to a tube body used for a seat surface, a backrest surface, a frame, or the like of a chair or bed for health or for the physically handicapped.

[0002]

[Prior Art]

 Conventionally, as this type of chair, there is a chair in which a plurality of rubber tubes are juxtaposed between frames to form a seat portion and a backrest portion in order to obtain cushioning properties. By injecting air or water into each rubber tube and pressurizing it to a specified pressure to expand the rubber tube, the seat and backrest have a certain level of strength and flexibility, supporting the weight of a person and comfort. I got a comfortable sitting.

[0003]

[Problems to be solved by the device]

 However, according to the above-mentioned conventional type, when the chair is used, the inside pressure of the rubber tube is kept at a predetermined pressure and the internal pressure cannot be adjusted, so that the flexibility of the chair depends on the purpose of use and a physical obstacle. There was a problem that the sex could not be adjusted.

The present invention solves the above problems, and an object of the present invention is to provide a tube body whose flexibility can be easily adjusted.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the tube body according to the present invention includes a retractable load-supporting tube and a retractable pressure adjustment tube adjacent to one end of the load-supporting tube in a protective tube whose both ends are closed. And a liquid injection port for injecting a liquid into the load supporting tube, and a gas injection port for injecting a gas into the pressure adjusting tube.

[0006]

[Action]

 According to the above configuration, the tube body is maintained at a predetermined rigidity by injecting the liquid from the liquid injection port into the load supporting tube and injecting the gas from the gas injection port into the pressure adjusting tube. Then, by further injecting gas from the gas inlet into the pressure adjusting tube, the pressure adjusting tube expands and compresses the load supporting tube, so that the internal pressure of the load supporting tube rises. Therefore, the rigidity of the load supporting tube is increased and the tube body is hardened. Further, by discharging the gas in the pressure adjusting tube from the gas inlet, the pressure adjusting tube is contracted, so that the load supporting tube expands and the internal pressure of the load supporting tube decreases. Therefore, the rigidity of the load supporting tube is reduced and the tube body is softened.

As described above, since the rigidity of the load supporting tube can be adjusted by injecting and discharging the gas into the pressure adjusting tube, for example, when a chair is formed by a plurality of tube bodies, the chair The flexibility of the backrest and seat can be easily adjusted for each tube body. Also, by increasing the rigidity of the load supporting tube, it is possible to use the tube body as a member to which a large load is applied.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. Reference numeral 1 denotes a chair for health or a physically handicapped person, which has a square frame-shaped seat frame 2, a seat surface 3 mounted between the seat frames 2, and one side of the seat frame 2. It is formed by a pair of left and right backrest frames 4, a backrest surface 5 attached between the backrest frames 4, and legs 6 attached to the four corners of the seat frame 2.

The seat surface 3 and the backrest surface 5 are formed by arranging a plurality of tube bodies 8 side by side, and each side of the seat portion frame 2, the backrest portion frame 4, and each leg portion 6 are also formed. It is formed of a tube body 8.

Each of the tube bodies 8 has a cylindrical protective tube 9 having both ends closed, and an expandable and contractible cylindrical load supporting tube 10 and an expandable and contractible tube 10 adjacent to one end of the load supporting tube 10. A flexible pressure adjusting tube (11) is provided. The load supporting tube 10 is long, whereas the pressure adjusting tube 11 is short. The load supporting tube 10 and the pressure adjusting tube 11 are made of rubber, and the protective tube 9 is made of aramid fiber. A liquid inlet 12 for injecting a liquid into the load supporting tube 10 is provided at the other end of the tube body 8, and a first valve 13 is attached to the liquid inlet 12. A gas inlet 14 for injecting gas into the pressure adjusting tube 11 is provided at one end of the tube body 8, and a second valve 15 is attached to the gas inlet 14.

The operation of the above configuration will be described below. The first valve 13 is operated to inject water (an example of a liquid) into the load supporting tube 10 through the liquid inlet 12, and the second valve 15 is operated so that the pressure adjusting tube 11 is operated through the gas inlet 14. The tube body 8 is maintained at a predetermined rigidity by injecting air (an example of gas) into the inside.

As for the tube body 8 used in the seat frame 2, the backrest frame 4, the legs 6, and the like, which require a large amount of rigidity, the tube body 8 is inserted from the gas inlet 14 into the pressure adjusting tube 11. By further injecting air, the pressure adjusting tube 11 expands and compresses the load supporting tube 10, so that the internal pressure of the load supporting tube 10 rises. Therefore, the rigidity of the load supporting tube 10 is increased and the tube body 8 is hardened. As a result, the seat frame 2, the backrest frame 4, the legs 6, etc. can support a large load.

Further, regarding the tube body 8 used in places such as the seat surface 3 and the backrest surface 5 that require flexibility rather than rigidity, the air in the pressure adjusting tube 11 is supplied from the gas inlet 14. By discharging, the pressure adjusting tube 11 contracts, so that the load supporting tube 10 expands and the internal pressure of the load supporting tube 10 drops. Therefore, the rigidity of the load supporting tube 10 is reduced, and the tube body 8 is softened. In this way, the rigidity of the load-supporting tube 10 can be easily adjusted by injecting and exhausting air into the pressure-adjusting tube 11 so that the seat surface 3 and the backrest surface 5 are flexible. The sex can be easily adjusted for each tube body 8.

In the above embodiment, the tube body 8 is used to form the chair 1, but the tube body 8 may be used to form the bed.

[0015]

[Effect of the device]

 As described above, according to the present invention, it is possible to adjust the rigidity of the load supporting tube by injecting the liquid into the load supporting tube and injecting or discharging the gas into the pressure adjusting tube. .. Thereby, for example, when a chair is formed by a plurality of tube bodies, the flexibility of the backrest portion or the seat portion of the chair can be easily adjusted for each tube body. Further, by increasing the rigidity of the load supporting tube, it is possible to use the tube body as a member to which a large load is applied.

[Brief description of drawings]

FIG. 1 is a side view of a tube body according to an embodiment of the present invention.

FIG. 2 is a perspective view of a chair formed using the tube body.

[Explanation of symbols]

 1 Chair 8 Tube 9 Protective tube 10 Load supporting tube 11 Pressure adjusting tube 12 Liquid inlet 14 Gas inlet

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Akashi Ashida 5-3 28 Nishikujo, Konohana-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd. (72) Teruhisa Ishihara, Nishikujo, Nishinojo-ku, Osaka City, Osaka Prefecture 3rd-28th Hitachi Shipbuilding Co., Ltd. (72) Creator Sadayuki Mashima 5th-3rd Nishikujo Nishikonohana-ku, Osaka-shi, Osaka, Japan 3-72th Hitachi Shipbuilding Co., Ltd. (72) Keiko Tanaka Konohana-ku, Osaka-shi, Osaka Nishi Kujo 5-3-28 Hitachi Shipbuilding Co., Ltd. (72) Inventor Hita Hitoshi Nishikujo 5-3-28 Konohana-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A load-supporting tube, which is expandable and contractible, and a load-adjusting pressure-adjusting tube, which is adjacent to one end of the load-supporting tube, are arranged in a protective tube whose both ends are closed. A tube body for a chair or the like, which is provided with a liquid injection port for injecting a liquid into the pressure tube and a gas injection port for injecting a gas into the pressure adjustment tube.