Chair iron stand capable of adjusting sitting posture

Abstract

The utility model discloses a sitting posture adjustable chair iron stand which comprises a seat frame, a lower frame, a driving bracket, a driver, a leg linkage bracket and a leg plate, the rear portion of the lower frame is rotationally connected with the rear portion of the seat frame through a first connecting piece, and the front portion of the lower frame is rotationally connected with the front portion of the seat frame through a second rotating piece. The driving bracket is connected with a driver through a first bracket; the tail part of the driver is rotationally connected with the rear part of the seat frame through a second bracket; the driving bracket is in transmission connection with the seat frame, the lower frame and the leg linkage bracket respectively; the two sides of the leg linkage support are connected with sliding rails respectively. The sliding rails are in sliding connection with sliding grooves in the inner walls of the two sides of the leg plate. Under the interaction of the driving support and the driver, the leg linkage support can be driven to tilt, and the sliding rails on the two sides of the leg linkage support can be driven to be in sliding connection with the sliding grooves in the inner walls of the two sides of the leg plate, so that the telescopic function of the leg plate is achieved; the whole sitting posture chair iron stand is stable in structure, high in bearing capacity and high in smoothness.

Description

Technical Field

[0001] The utility model relates to the technical field of electric sofa chairs, in particular to an iron frame of an adjustable sitting chair. Background Art

[0002] As people's living standards gradually improve, electric sofa chairs, as a kind of life enjoyment, are increasingly entering the homes of ordinary people. Compared with traditional seats, electric sofa chairs are increasingly loved and respected by people due to their unique comfort and functionality. The electric sofa frame is the core component of the electric sofa chair. Currently, there are few sofa chairs on the market that have the function of retracting after the feet are lifted up, and the few sofa chairs with retractable function are unstable after the feet are retracted, easy to shake left and right, and have poor load-bearing capacity.

[0003] Based on the above situation, the utility model proposes an adjustable sitting chair iron frame, which can effectively solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide an adjustable sitting chair iron frame. The utility model provides an adjustable sitting chair iron frame with a simple structure and reasonable design. Through the interaction between the driving bracket and the driver, the leg linkage bracket can be driven to tilt up, and the slide rails on both sides of the leg linkage bracket can be driven to slide and connect with the slide grooves on the inner walls of the two sides of the leg board, thereby realizing the function of extending and retracting the leg board; the entire sitting chair iron frame has a stable structure, strong load-bearing capacity, and high smoothness.

[0005] The utility model is realized by the following technical solutions:

[0006] An iron frame of an adjustable sitting chair comprises a seat frame, a lower frame, a driving bracket, a driver, a leg linkage bracket and a leg board; the rear part of the lower frame is rotationally connected to the rear part of the seat frame through a first connecting piece, and the front part of the lower frame is rotationally connected to the front part of the seat frame through a second rotating piece; the driving bracket is connected to a driver for driving the leg linkage bracket to tilt and retract through the first bracket, and the tail of the driver is rotationally connected to the rear part of the seat frame through the second bracket; the driving bracket is transmission-connected to the seat frame, the lower frame and the leg linkage bracket respectively; the two sides of the leg linkage bracket are respectively connected to slide rails; the slide rails are slidably connected to the slide grooves on the inner walls of the two sides of the leg board.

[0007] According to the above technical scheme, as a further preferred technical scheme of the above technical scheme, the driving bracket includes a cross bar, which is fixedly connected to the first bracket, and the two ends of the cross bar are respectively fixedly connected with a third rotating piece, one end of the third rotating piece is rotatably connected to the lower frame, the other end of the third rotating piece is rotatably connected to the fourth rotating piece and one end of the fifth rotating piece, the other end of the fourth rotating piece is rotatably connected to the seat frame, and the fifth rotating piece is rotatably connected to the leg linkage bracket.

[0008] According to the above technical scheme, as a further preferred technical scheme of the above technical scheme, the leg linkage bracket includes a leg rotating rod, both ends of the leg rotating rod are rotatably connected to the seat frame through a third bracket, and both ends of the leg rotating rod are fixedly connected to slide rail side plates, and the outer sides of the slide rail side plates are fixedly connected to the slide rails; a leg support plate is fixedly connected between the slide rail side plates, a pulley bracket is fixedly connected between the leg support plate and the leg rotating rod, the pulley bracket is provided with a slot, a plurality of pulleys are arranged in the slot, and one end of the pulley is rotatably connected to the leg connecting plate One end of the leg connecting plate is rotatably connected to one end of the first leg driven plate, the other end of the first leg driven plate is rotatably connected to the second leg driven plate, and the second leg driven plate is fixedly connected to the front part of the seat frame; the leg supporting plate is rotatably connected to a sixth rotating plate, one end of the sixth rotating plate is rotatably connected to one end of the seventh rotating plate, and the other end of the seventh rotating plate is rotatably connected to the bottom of the leg plate; the other end of the sixth rotating plate is provided with an arc hole, and a rotating column is slidably connected in the arc hole, and the rotating column is rotatably connected to the leg supporting plate and the leg connecting plate respectively.

[0009] According to the above technical solution, as a further preferred technical solution of the above technical solution, the bottom of the lower frame is rotatably connected to a support seat.

[0010] According to the above technical solution, as a further preferred technical solution of the above technical solution, backrest fixing seats are respectively fixedly connected to both sides of the rear portion of the seat frame.

[0011] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0012] The utility model provides an adjustable sitting chair iron frame with a simple structure and a reasonable design. Through the interaction between the driving bracket and the driver, the leg linkage bracket can be driven to tilt up, and the sliding rails on both sides of the leg linkage bracket can be driven to slide and connect with the sliding grooves on the inner walls on both sides of the leg board, thereby realizing the function of extending and retracting the leg board. The entire sitting chair iron frame has a stable structure, strong load-bearing capacity and high smoothness. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the utility model in the open state;

[0014] Figure 2 for Figure 1 Another angle diagram of the overall structure;

[0015] Figure 3 It is a schematic diagram of the overall structure of the utility model in the closed state. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solution of the utility model, the preferred implementation scheme of the utility model is described below in conjunction with specific embodiments. However, it should be understood that the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationship described in the drawings is only used for illustrative purposes and cannot be understood as a limitation on this patent.

[0017] An iron frame of an adjustable sitting chair comprises a seat frame 1, a lower frame 2, a driving bracket, a driver 3, a leg linkage bracket and a leg board 4; the rear part of the lower frame 2 is rotationally connected to the rear part of the seat frame 1 through a first connecting piece 5, and the front part of the lower frame 2 is rotationally connected to the front part of the seat frame 1 through a second rotating piece 6; the driving bracket is connected to a driver 3 for driving the leg linkage bracket to tilt and retract through a first bracket 7, and the tail of the driver 3 is rotationally connected to the rear part of the seat frame 1 through a second bracket 8; the driving bracket is transmission-connected to the seat frame 1, the lower frame 2 and the leg linkage bracket respectively; the two sides of the leg linkage bracket are respectively connected to slide rails 9; the slide rails 9 are slidably connected to the slide grooves 10 on the inner walls of the two sides of the leg board 4.

[0018] The utility model has a simple structure and a reasonable design. Through the interaction between the driving bracket and the driver, the leg linkage bracket can be driven to tilt up, and the sliding rails on both sides of the leg linkage bracket can be driven to slide and connect with the sliding grooves on the inner walls of both sides of the leg board, thereby realizing the function of extending and retracting the leg board. The iron frame structure of the entire sitting chair is stable, the load-bearing capacity is strong, and the smoothness is high.

[0019] Further, in another embodiment, the driving bracket includes a cross bar 11, the cross bar 11 is fixedly connected to the first bracket 7, and the two ends of the cross bar 11 are respectively fixedly connected with a third rotating piece 12, one end of the third rotating piece 12 is rotatably connected to the lower frame 2, the other end of the third rotating piece 12 is rotatably connected to a fourth rotating piece 13 and one end of a fifth rotating piece 14, the other end of the fourth rotating piece 13 is rotatably connected to the seat frame 1, and the fifth rotating piece 14 is rotatably connected to the leg linkage bracket.

[0020] Further, in another embodiment, the leg linkage bracket includes a leg rotating rod 15, both ends of the leg rotating rod 15 are rotatably connected to the seat frame 1 through a third bracket 16, and both ends of the leg rotating rod 15 are fixedly connected to the slide rail side plates 17, and the outer sides of the slide rail side plates 17 are fixedly connected to the slide rail 9; a leg support plate 18 is fixedly connected between the slide rail side plates 17, and a pulley bracket 19 is fixedly connected between the leg support plate 18 and the leg rotating rod 15, and the pulley bracket 19 is provided with a notch 20, and a plurality of pulleys 21 are arranged in the notch 20, and one end of the pulley 21 is rotatably connected to the leg connecting plate 22, and the leg connecting One end of the plate 22 is rotatably connected to one end of the first leg driven piece 23, the other end of the first leg driven piece 23 is rotatably connected to the second leg driven piece 24, and the second leg driven piece 24 is fixedly connected to the front part of the seat frame 1; the leg support plate 18 is rotatably connected to the sixth rotating piece 25, one end of the sixth rotating piece 25 is rotatably connected to one end of the seventh rotating piece 26, and the other end of the seventh rotating piece 26 is rotatably connected to the bottom of the leg plate 4; the other end of the sixth rotating piece 25 is provided with an arc hole 27, and a rotating column 28 is slidably connected in the arc hole 27, and the rotating column 28 is rotatably connected to the leg support plate 18 and the leg connecting plate 22 respectively.

[0021] The utility model is provided with a driving bracket, a leg linkage bracket and a driver 3. When the telescopic end of the driver 3 extends forward to push the cross bar 11, the seat frame 1 is driven to move under the action of the first connecting piece 5 and the second rotating piece 6, and then the leg linkage bracket is tilted upward under the rotation action between the third rotating piece 12, the fourth rotating piece 13 and the fifth rotating piece 14. When the leg linkage bracket tilts upward, the pulley 21 moves backward along the notch 20 of the pulley bracket 19, and the leg connecting plate 22 is slidably connected with the arc hole 27 of the sixth rotating piece 25 through the rotating column 28, the sixth rotating piece 25 is rotatably connected with the seventh rotating piece 26, and the seventh rotating piece 26 is rotatably connected with the leg plate 4, so that the leg plate 4 can slide along the slide rail 9, thereby realizing the contraction of the leg plate 4.

[0022] Further, in another embodiment, the bottom of the lower frame 2 is rotatably connected with a support seat 29. By rotatably connecting the support seat 29 at the bottom of the lower frame 2, the entire electric sofa chair is rotated, which increases practicality.

[0023] Further, in another embodiment, both sides of the rear portion of the seat frame 1 are respectively fixedly connected with backrest fixing seats 30. By providing the backrest fixing seats 30, it is convenient to connect the seat back.

[0024] According to the description and drawings of the utility model, those skilled in the art can easily manufacture or use the adjustable sitting chair iron frame of the utility model, and can produce the positive effects recorded in the utility model.

[0025] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationships are based on the orientation or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in conjunction with the drawings and according to specific circumstances.

[0026] Unless otherwise specified and limited, in the present invention, the terms "disposed", "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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. An adjustable sitting chair iron frame, characterized in that: The invention comprises a seat frame (1), a lower frame (2), a driving bracket, a driver (3), a leg linkage bracket and a leg plate (4); the rear part of the lower frame (2) is rotatably connected to the rear part of the seat frame (1) through a first connecting piece (5), and the front part of the lower frame (2) is rotatably connected to the front part of the seat frame (1) through a second rotating piece (6); the driving bracket is connected to a driver (3) for driving the leg linkage bracket to tilt and retract through a first bracket (7), and the tail of the driver (3) is rotatably connected to the rear part of the seat frame (1) through a second bracket (8); the driving bracket is respectively connected to the seat frame (1), the lower frame (2) and the leg linkage bracket in a transmission manner; the two sides of the leg linkage bracket are respectively connected to slide rails (9); the slide rails (9) are slidably connected to the slide grooves (10) on the inner walls of the two sides of the leg plate (4).

2. The adjustable sitting chair iron frame according to claim 1, characterized in that: The driving bracket comprises a cross bar (11), the cross bar (11) is fixedly connected to the first bracket (7), and the two ends of the cross bar (11) are respectively fixedly connected to a third rotating piece (12), one end of the third rotating piece (12) is rotatably connected to the lower frame (2), the other end of the third rotating piece (12) is rotatably connected to a fourth rotating piece (13) and one end of a fifth rotating piece (14), the other end of the fourth rotating piece (13) is rotatably connected to the seat frame (1), and the fifth rotating piece (14) is rotatably connected to the leg linkage bracket.

3. The adjustable sitting chair iron frame according to claim 1, characterized in that: The leg linkage bracket comprises a leg rotating rod (15), the two ends of the leg rotating rod (15) are respectively rotatably connected to the seat frame (1) through a third bracket (16), and the two ends of the leg rotating rod (15) are respectively fixedly connected to a slide rail side plate (17), and the outer side of the slide rail side plate (17) is fixedly connected to the slide rail (9); a leg support plate (18) is fixedly connected between the slide rail side plates (17), and a pulley bracket (19) is fixedly connected between the leg support plate (18) and the leg rotating rod (15), and the pulley bracket (19) is provided with a notch (20), and a plurality of pulleys (21) are arranged in the notch (20), and one end of the pulley (21) is rotatably connected to the leg connecting plate (22), and one end of the leg connecting plate (22) is fixedly connected to the leg supporting plate (18). The leg support plate (18) is rotatably connected to a sixth rotating plate (25), one end of the sixth rotating plate (25) is rotatably connected to one end of a first leg driven plate (23), the other end of the first leg driven plate (23) is rotatably connected to a second leg driven plate (24), and the second leg driven plate (24) is fixedly connected to the front of the seat frame (1); the leg support plate (18) is rotatably connected to a sixth rotating plate (25), one end of the sixth rotating plate (25) is rotatably connected to one end of a seventh rotating plate (26), and the other end of the seventh rotating plate (26) is rotatably connected to the bottom of the leg plate (4); the other end of the sixth rotating plate (25) is provided with an arc hole (27), a rotating column (28) is slidably connected in the arc hole (27), and the rotating column (28) is rotatably connected to the leg support plate (18) and the leg connecting plate (22) respectively.

4. The adjustable sitting chair iron frame according to claim 1, characterized in that: The bottom of the lower frame (2) is rotatably connected to a support seat (29).

5. The adjustable sitting chair iron frame according to claim 1, characterized in that: Backrest fixing seats (30) are respectively fixedly connected to both sides of the rear portion of the seat frame (1).

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