Leg supporting structure of flat deck chair

Abstract

The utility model relates to the technical field of chairs, in particular to a leg supporting structure of a flat deck chair, which comprises a base, a mounting seat arranged on the base, a mounting frame hinged to the mounting seat, a first cylinder arranged between the rear end of the mounting frame and the base, a chair back hinged to the rear end of the mounting frame, and a second cylinder arranged between the middle of the chair back and the mounting frame. A leg supporting frame is downwards arranged at the front end of the mounting frame, the upper end of the leg supporting frame is hinged to the mounting frame, a battery and an air pump are arranged on the side, close to the mounting base, of the lower end of the leg supporting frame, and a third air cylinder is arranged between the lower side of the front end of the mounting frame and the upper end of the leg supporting frame; the air inlet and outlet of the first air cylinder, the air inlet and outlet of the second air cylinder and the air inlet and outlet of the third air cylinder are respectively provided with an electromagnetic control valve, the air pump is connected with the electromagnetic control valves through air pipes, the air pump and the electromagnetic control valves are both electrically connected with the controller, and the whole device is more stable when the device is in a lying state.

Description

Technical Field

[0001] The utility model relates to the technical field of chairs, in particular to a leg supporting structure of a reclining chair. Background Art

[0002] With the ever-accelerating pace of life and changes in working methods, people spend more and more time sitting on chairs to work. Existing office chairs have become reclining chairs that can adjust the backrest and seat angle to achieve reclining rest, so that people can lie down and rest during their rest time. In order to relax more while lying down, they are even provided with massage functions.

[0003] Today's reclining chairs generally include a base, a mounting seat is arranged on the base, a mounting frame is hinged on the mounting seat, a seat cushion is arranged on the mounting frame, an adjustment mechanism is arranged between the rear end of the mounting frame and the base for adjusting the distance between the rear end of the mounting frame and the base so as to adjust the angle between the seat cushion and the base, a chair back is hinged on the rear end of the mounting frame, and an adjustment mechanism is also arranged between the middle part of the chair back and the mounting frame for adjusting the angle between the chair back and the mounting frame, thereby indirectly adjusting the angle between the chair back and the seat cushion.

[0004] However, when the current reclining chair is laid flat for rest after being leveled, the overall stability is poor because the center of gravity is biased backward when lying flat. Utility Model Content

[0005] In order to solve the above technical deficiencies, the utility model provides a leg support structure for a reclining chair, which makes the whole body more stable when the reclining chair is in a reclining state.

[0006] The utility model discloses a leg support structure of a reclining chair, comprising a base, a mounting seat being arranged on the base, a mounting frame being hinged on the mounting seat, a No. 1 air cylinder being arranged between the rear end of the mounting frame and the base, a chair back being hinged to the rear end of the mounting frame, a No. 2 air cylinder being arranged between the middle part of the chair back and the mounting frame, a leg support frame being arranged downwardly at the front end of the mounting frame, an upper end of the leg support frame being hinged to the mounting frame, a battery and an air pump being arranged at the side of the lower end of the leg support frame close to the mounting seat, a No. 3 air cylinder being arranged between the lower side of the front end of the mounting frame and the upper end of the leg support frame, an electromagnetic control valve being arranged on the air inlet and outlet of the No. 1 air cylinder, the air inlet and outlet of the No. 2 air cylinder and the air inlet and outlet of the No. 3 air cylinder, the air pump being connected to the electromagnetic control valve through an air pipe, the air pump and the electromagnetic control valve being electrically connected to a controller, and the battery being used to supply power to the air pump, the electromagnetic control valve and the controller.

[0007] The principle of the above technical solution is to control the extension of cylinder No. 1, cylinder No. 2 and cylinder No. 3 by controlling the electromagnetic control valve and the air pump through the controller. When the reclining chair is in a reclining state, the piston rods of cylinder No. 1 and cylinder No. 2 retract, and the piston rod of cylinder No. 3 extends. Since the air pump and the battery are arranged at the lower end of the leg support frame, when the piston rod of cylinder No. 3 extends to make the leg support frame horizontal, the air pump and the battery will be at the front end of the reclining chair. Since the battery and the air pump are heavy, the center of gravity is greatly moved forward, and it is more stable when a person lies on the reclining chair.

[0008] Preferably, the electromagnetic control valve adopts a three-position three-way electromagnetic valve, so that the No. 1 cylinder, the No. 2 cylinder and the No. 3 cylinder have three states: extension, retraction and holding.

[0009] The leg support structure of a reclining chair obtained by the utility model has the beneficial effect that when the reclining chair is in a reclining state, the air pump and the battery will be located at the front end of the reclining chair, so that the center of gravity is greatly moved forward, and it is more stable when a person lies on the reclining chair. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a left side view of the embodiment 1 of the utility model;

[0011] Figure 2 This is a schematic diagram of the use of Example 1 of the utility model. DETAILED DESCRIPTION

[0012] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0013] Embodiment 1:

[0014] like Figure 1 , 2As shown, the utility model discloses a leg support structure of a reclining chair, comprising a base 1, a mounting seat 2 is arranged on the base 1, a mounting frame 7 is hinged on the mounting seat 2, a No. 1 cylinder 10 is arranged between the rear end of the mounting frame 7 and the base 1, a chair back 8 is hinged to the rear end of the mounting frame 7, a No. 2 cylinder 9 is arranged between the middle part of the chair back 8 and the mounting frame 7, a leg support frame 4 is arranged downwardly at the front end of the mounting frame 7, the upper end of the leg support frame 4 is hinged to the mounting frame 7, a battery 3 and an air pump 5 are arranged on the side of the lower end of the leg support frame 4 close to the mounting seat 2, a No. 3 cylinder 6 is arranged between the lower side of the front end of the mounting frame 7 and the upper end of the leg support frame 4, electromagnetic control valves are arranged on the air inlet and outlet of the No. 1 cylinder 10, the air inlet and outlet of the No. 2 cylinder 9, and the air inlet and outlet of the No. 3 cylinder 6, the air pump 5 is connected to the electromagnetic control valve through an air pipe, the air pump 5 and the electromagnetic control valve are electrically connected to the controller, and the battery 3 supplies power to the air pump 5, the electromagnetic control valve and the controller.

[0015] The principle of the above technical solution is to control the extension of the No. 1 cylinder 10, the No. 2 cylinder 9 and the No. 3 cylinder 6 by controlling the electromagnetic control valve and the air pump 5 through the controller. When the reclining chair is in a reclining state, the piston rods of the No. 1 cylinder 10 and the No. 2 cylinder 9 retract, and the piston rod of the No. 3 cylinder 6 extends. Since the air pump 5 and the battery 3 are arranged at the lower end of the leg support frame 4, when the piston rod of the No. 3 cylinder 6 is extended to make the leg support frame 4 horizontal, the air pump 5 and the battery 3 will be at the front end of the reclining chair. Since the battery 3 and the air pump 5 are heavy, the center of gravity is greatly moved forward, and it is more stable when a person lies on the reclining chair.

[0016] Among them, the electromagnetic control valve adopts a three-position three-way solenoid valve, the air source port of the three-position three-way solenoid valve is connected to the air pump 5, the working ports of the three-position three-way solenoid valve are respectively connected to the air inlet and outlet ports of cylinder No. 10, cylinder No. 2, cylinder 9 and cylinder No. 3, 6, and the exhaust port of the three-position three-way solenoid valve is connected to the atmosphere, so that cylinder No. 10, cylinder No. 2, cylinder 9 and cylinder No. 3, 6 have three states of extension, retraction and retention.

[0017] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0018] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be an interactive relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0019] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0020] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simplified modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A leg support structure for a reclining chair, characterized in that: The invention comprises a base (1), a mounting seat (2) is arranged on the base (1), a mounting frame (7) is hingedly connected to the mounting seat (2), a first cylinder (10) is arranged between the rear end of the mounting frame (7) and the base (1), a chair back (8) is hingedly connected to the rear end of the mounting frame (7), a second cylinder (9) is arranged between the middle part of the chair back (8) and the mounting frame (7), a leg support frame (4) is arranged downwardly at the front end of the mounting frame (7), the upper end of the leg support frame (4) is hingedly connected to the mounting frame (7), and the lower end of the leg support frame (4) is hingedly connected to the mounting frame (7). A battery (3) and an air pump (5) are arranged on the side close to the mounting seat (2); a No. 3 air cylinder (6) is arranged between the lower side of the front end of the mounting frame (7) and the upper end of the leg support frame (4); electromagnetic control valves are arranged on the air inlet and outlet of the No. 1 air cylinder (10), the air inlet and outlet of the No. 2 air cylinder (9), and the air inlet and outlet of the No. 3 air cylinder (6); the air pump (5) is connected to the electromagnetic control valve through an air pipe; the air pump (5) and the electromagnetic control valve are electrically connected to a controller; and the battery (3) supplies power to the air pump (5), the electromagnetic control valve, and the controller.

2. The leg support structure of a reclining chair according to claim 1, characterized in that: The electromagnetic control valve adopts a three-position three-way electromagnetic valve.

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