Forward-leaning-preventing supporting automatic telescopic backrest laying-flat functional frame

Abstract

The utility model provides an anti-forward-leaning supporting automatic telescopic backrest flat laying function frame which comprises a frame body and anti-forward-leaning assemblies located on the two sides of the bottom of the frame body, an electric push rod is arranged in the frame body and hinged to a supporting frame, one end of the supporting frame is hinged to the frame body, and the other end of the supporting frame is hinged to the anti-forward-leaning assemblies. The forward-leaning-preventing assembly is hinged to the frame body, and when the electric push rod stretches out and draws back, the supporting frame and the forward-leaning-preventing assembly can be driven to move. The folding chair has the advantages that the electric push rod stretches out and draws back to drive the supporting frame and the forward-leaning-preventing assembly to move, the folding chair can be rapidly retracted or stretched out, a user can conveniently adjust the comfortable angle needed in the using process, the forward-leaning-preventing assembly is designed to play a stabilizing role, and when the folding chair stretches out, the folding chair is convenient to use. And meanwhile, the backrest frame is laid flat, so that even if the user sits up forwards by changing the lying state, the equipment does not topple forwards, and the stability is effectively enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of support frames, in particular to an anti-tilt support frame with automatic telescopic backrest leveling function. Background Art

[0002] In today's urban life, people spend most of their time in office chairs. In order to ensure the comfort of lunch breaks, some chairs are equipped with retractable support frames to facilitate changing the inclination of the chair, thereby adjusting the comfortable angle required by users for lunch breaks. The retractable support frame is also suitable for medical use, realizing automatic conversion from wheelchair to bed, and has a wide range of uses.

[0003] In the prior art, the technical scheme of the Chinese patent document (patent application number: CN202223442733.X, patent name: an electric seat frame) discloses that "it includes a left deformable chair frame, a right deformable chair frame, an intermediate connecting frame and an integrated motor; the left deformable chair frame and the right deformable chair frame are connected by the intermediate connecting frame; the intermediate connecting frame is provided with an integrated motor; the left deformable chair frame and the right deformable chair frame are both retractable; the left deformable chair frame and the right deformable chair frame are respectively provided with footrest connecting parts; the integrated motor is used to extend or contract the left deformable chair frame and the right deformable chair frame, thereby driving the footrest connecting parts to move."

[0004] Combined with the description and drawings of the patent document, in the above scheme, the seat frame adjusts the backrest connection to tilt backward, which will achieve the comfortable angle required by the user for a lunch break. However, when the user changes from a reclining state to sitting forward, it will easily cause the seat frame to tilt forward, and the stability is not good enough. Utility Model Content

[0005] The utility model overcomes the shortcomings of the prior art, provides an anti-tilt support automatic telescopic backrest flattening function frame, and can overcome the prior art defects mentioned in the background technology.

[0006] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0007] A functional frame with an anti-tilt support and an automatically retractable backrest that can be laid flat comprises a frame body and anti-tilt components located on both sides of the bottom of the frame body, wherein an electric push rod is arranged in the frame body, the electric push rod is hingedly connected to a support frame, one end of the support frame is hingedly connected to the frame body, and the other end of the support frame is hingedly connected to the anti-tilt component, the anti-tilt component is hingedly connected to the frame body, and when the electric push rod is retracted or extended, the support frame and the anti-tilt component are driven to move.

[0008] Furthermore, the anti-tilt assembly includes a stabilizing bar and a supporting foot, and the stabilizing bar and the supporting foot are connected to form a "" shape.

[0009] Furthermore, the support frame includes a backrest frame, a leg support structure and a connecting frame. The backrest frame is hingedly connected to one end of the upper part of the frame, and the leg support structure is hingedly connected to the other end of the upper part of the frame. The backrest frame and the leg support structure are respectively hingedly connected to the connecting frame.

[0010] Furthermore, the backrest frame includes a flip frame, a first connecting member is arranged at the bottom of the flip frame, second connecting members are arranged on both sides of the first connecting member, the first connecting member is hingedly connected to the electric push rod, backrest connecting members are arranged on both sides of the flip frame, and the backrest connecting members are hingedly connected to the frame body.

[0011] Furthermore, the backrest connecting member is provided with a plurality of first mounting holes.

[0012] Furthermore, the leg supporting structure includes a plurality of arc-shaped connecting plates, one end of the arc-shaped connecting plate is provided with a foot pedal, and the other end of the arc-shaped connecting plate is hingedly connected to the frame.

[0013] Furthermore, the connecting frame includes a plurality of first connecting rods and a plurality of second connecting rods, one end of the first connecting rod is hingedly connected to the second connecting member, the other end of the first connecting rod is hingedly connected to the middle part of the arc-shaped connecting plate, one end of the second connecting rod is hingedly connected to the second connecting member, the other end of the second connecting rod is hingedly connected to the stabilizing rod, and the stabilizing rod is hingedly connected to the frame body.

[0014] Furthermore, a plurality of second mounting holes are provided on the upper end surface of the frame.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The electric push rod is used to drive the support frame and the anti-tilt component to move, so that the device can be quickly retracted or extended, so that the user can adjust the comfortable angle required during use. The anti-tilt component is designed to stabilize the device. When the device is extended, the leg support structure is extended and will not fall forward. At the same time, the backrest is laid flat, so even if the user changes from a reclining state to sitting forward, the device will not fall forward, which effectively enhances stability and facilitates use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the retraction of a high-stability automatic extension and retraction support frame;

[0019] Figure 2 It is a schematic diagram of the extension of a high-stability automatic extension and retraction support frame;

[0020] Figure 3 This is a schematic diagram of the support frame and anti-tilt assembly.

[0021] In the figure: 1-frame, 101-second mounting hole, 2-electric push rod, 3-support frame, 301-backrest frame, 3011-flip frame, 3012-first connecting piece, 3013-second connecting piece, 3014-backrest connecting piece, 3015-first mounting hole, 302-leg supporting structure, 3021-arc-shaped connecting plate, 3022-foot pedal, 303-connecting frame, 3031-first connecting rod, 3032-second connecting rod, 4-anti-tilt assembly, 401-stabilizing bar, 402-supporting foot, 5-universal wheel. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0023] like Figure 1 to Figure 2 As shown, an anti-tilt support automatic telescopic backrest flattening function frame includes a frame body 1 and anti-tilt components 4 located on both sides of the bottom of the frame body 1, an electric push rod 2 is arranged in the frame body 1, the electric push rod 2 is hingedly connected to the support frame 3, one end of the support frame 3 is hingedly connected to the frame body 1, and the other end of the support frame 3 is hingedly connected to the anti-tilt component 4, and the anti-tilt component 4 is hingedly connected to the frame body 1. When the electric push rod 2 is extended or retracted, it will drive the support frame 3 and the anti-tilt component 4 to move, so that the device can be quickly contracted or extended, so that the user can adjust the comfortable angle required for use, wherein the anti-tilt component 4 is designed to play a stabilizing role. When the device is extended, the leg support structure is extended and will not fall forward. At the same time, the backrest is laid flat. Even if the user changes the reclining state to sit up forward, the device will not fall forward, which effectively enhances stability and facilitates use.

[0024] Universal wheels 5 are provided below the frame 1 to facilitate the movement of the frame 1 .

[0025] Specifically, Figure 3 As shown, the anti-tilt assembly 4 includes a stabilizing rod 401 and a supporting foot 402 . The stabilizing rod 401 and the supporting foot 402 are connected to form a “7” shape. The “7” shape design has a better supporting effect and effectively improves the stability of the anti-tilt assembly 4 .

[0026] The support frame 3 includes a backrest frame 301, a leg support structure 302 and a connecting frame 303. The backrest frame 301 is hingedly connected to one end of the upper part of the frame body 1, and the leg support structure 302 is hingedly connected to the other end of the upper part of the frame body 1. The backrest frame 301 and the leg support structure 302 are respectively hingedly connected to the connecting frame 303. The backrest frame 301 includes a flip frame 3011. A first connecting member 3012 is provided at the bottom of the flip frame 3011. Second connecting members 3013 are provided on both sides of the first connecting member 3012. The first connecting member 3012 is hingedly connected to the push rod of the electric push rod 2. The driving motor of the electric push rod 2 is hinged on the frame body 1. Backrest connecting members 3014 are provided on both sides of the flip frame 3011. The backrest connecting members 3013 are provided on both sides of the flip frame 3011. 3014 is hingedly connected to the frame 1, the leg support structure 302 includes a plurality of arc-shaped connecting plates 3021, one end of the arc-shaped connecting plate 3021 is provided with a foot pedal 3022, and the other end of the arc-shaped connecting plate 3021 is hingedly connected to the frame 1, the connecting frame 303 includes two first connecting rods 3031 and two second connecting rods 3032, one end of the first connecting rod 3031 is hingedly connected to the second connecting member 3013, the other end of the first connecting rod 3031 is hingedly connected to the middle part of the arc-shaped connecting plate 3021, one end of the second connecting rod 3032 is hingedly connected to the second connecting member 3013, the other end of the second connecting rod 3032 is hingedly connected to the stabilizing rod 401, and the stabilizing rod 401 is hingedly connected to the frame 1.

[0027] When the user needs to adjust the backrest to the extended state, the push rod of the electric push rod 2 is contracted, so that the first connecting member 3012 drives one side of the flip frame 3011 to flip upward, and the end of the backrest connecting member 3014 moves downward, so as to adjust the user's backrest tilt angle. The flip frame 3011 moves while driving the second connecting member 3013 to move, and the second connecting member 3013 drives the first connecting rod 3031 and the second connecting rod 3032 to move. Figure 3For example, A is the hinge point between the arc-shaped connecting plate 3021 and the frame 1, and B is the hinge point between the anti-tilt assembly 4 and the frame 1. The arc-shaped connecting plate 3021 is driven to flip upward with A as the turning point by the first connecting rod 3031, so that the foot pedal 3022 moves up along the arc-shaped connecting plate 3021, thereby adjusting the supporting angle of the arc-shaped connecting plate 3021 for the user's legs. At the same time, the second connecting rod 3032 drives the anti-tilt assembly 4 to flip downward with B as the turning point. When the supporting foot 402 contacts the ground, it will support the device and improve the stability of the device. On the contrary, when the user needs to adjust it to the retracted state, the push rod of the electric push rod 2 is extended, so that the first connecting rod Component 3012 drives one side of the flip frame 3011 to flip downward, and the end of the backrest connecting component 3014 moves upward, so that the tilt angle of the backrest is reset. When the flip frame 3011 moves, it will drive the second connecting component 3013 to move. The second connecting component 3013 drives the first connecting rod 3031 and the second connecting rod 3032 to move. The first connecting rod 3031 drives the arc-shaped connecting plate 3021 to flip downward with A as the turning point, so that the foot pedal 3022 moves down along the arc-shaped connecting plate 3021, thereby retracting the foot pedal 3022, and the second connecting rod 3032 drives the anti-tilt assembly 4 to flip upward with B as the turning point, so as to retract the anti-tilt assembly 4 into the frame body 1.

[0028] The backrest connector 3014 is provided with a plurality of first mounting holes 3015, and the upper end surface of the frame body 1 is provided with a plurality of second mounting holes 101. The first mounting holes 3015 and the second mounting holes 101 are designed to facilitate the installation of the device on other devices.

[0029] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-tilt support automatically retractable backrest flattening function frame, characterized in that: The invention comprises a frame (1) and anti-tilt components (4) located on both sides of the bottom of the frame (1); an electric push rod (2) is arranged inside the frame (1); the electric push rod (2) is hingedly connected to a support frame (3); one end of the support frame (3) is hingedly connected to the frame (1); the other end of the support frame (3) is hingedly connected to the anti-tilt component (4); the anti-tilt component (4) is hingedly connected to the frame (1); when the electric push rod (2) is extended or retracted, the support frame (3) and the anti-tilt component (4) are driven to move.

2. The anti-tilt support automatic telescopic backrest flattening function frame according to claim 1, characterized in that: The anti-forward tilt assembly (4) comprises a stabilizing rod (401) and a supporting leg (402), wherein the stabilizing rod (401) and the supporting leg (402) are connected to form a "7" shape.

3. The anti-tilt support automatic telescopic backrest flattening function frame according to claim 2, characterized in that: The support frame (3) comprises a backrest frame (301), a leg support structure (302) and a connecting frame (303); the backrest frame (301) is hingedly connected to one end of the upper part of the frame body (1); the leg support structure (302) is hingedly connected to the other end of the upper part of the frame body (1); the backrest frame (301) and the leg support structure (302) are respectively hingedly connected to the connecting frame (303).

4. The anti-tilt support automatic telescopic backrest flattening function frame according to claim 3, characterized in that: The backrest frame (301) comprises a flip frame (3011), a first connecting member (3012) is arranged at the bottom of the flip frame (3011), second connecting members (3013) are arranged on both sides of the first connecting member (3012), the first connecting member (3012) is hingedly connected to the electric push rod (2), backrest connecting members (3014) are arranged on both sides of the flip frame (3011), and the backrest connecting members (3014) are hingedly connected to the frame body (1).

5. The anti-tilt support automatic telescopic backrest flattening function frame according to claim 4, characterized in that: The backrest connecting piece (3014) is provided with a plurality of first mounting holes (3015).

6. The anti-tilt support automatic telescopic backrest flattening function frame according to claim 5, characterized in that: The leg support structure (302) comprises a plurality of arc-shaped connecting plates (3021), one end of each arc-shaped connecting plate (3021) is provided with a foot pedal (3022), and the other end of each arc-shaped connecting plate (3021) is hingedly connected to the frame (1).

7. The anti-tilt support automatic telescopic backrest flattening function frame according to claim 6, characterized in that: The connecting frame (303) includes a plurality of first connecting rods (3031) and a plurality of second connecting rods (3032), one end of the first connecting rod (3031) is hingedly connected to the second connecting member (3013), the other end of the first connecting rod (3031) is hingedly connected to the middle part of the arc-shaped connecting plate (3021), one end of the second connecting rod (3032) is hingedly connected to the second connecting member (3013), the other end of the second connecting rod (3032) is hingedly connected to the stabilizing rod (401), and the stabilizing rod (401) is hingedly connected to the frame body (1).

8. The anti-tilt support automatic telescopic backrest flattening function frame according to claim 1, characterized in that: The upper end surface of the frame body (1) is provided with a plurality of second mounting holes (101).

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