CN209965751U - Chair frame - Google Patents

Abstract

The utility model discloses a chair frame. The chair frame realizes the switching between a sitting posture state and a back-back state by matching a single push rod with a sleeve assembly and a limit structure, and at the same time realizes that in the sitting posture state, the backrest does not change. The movable calf is lifted independently, so as to meet the user's demand for diversifying the calf angle adjustment in the sitting position, reduce the cost of the chair frame, and simplify the operation of the function of the chair frame.

Description

a chair frame

technical field

The utility model relates to the technical field of chairs, in particular to a chair frame.

Background technique

The feature of the zero-gravity home chair is to create a sense of weightlessness in outer space, making people in a state of complete relaxation. As the pace of life continues to accelerate, people's desire to improve the quality of life continues to increase. To release stress for the human body and improve the quality of life. Most of the electric zero-gravity seats on the existing market have a double push rod structure, and the cost of the double push rod structure is relatively high and the control part is more complicated. In view of this, this application is hereby made.

Utility model content

Aiming at the deficiencies of the prior art, the utility model proposes a chair frame. Through the single push rod structure, the cost is reduced and the operation is simplified in addition to realizing the switching between the sitting posture state and the backward state.

The embodiment of the present invention provides a chair frame, which can realize the transformation of the sitting posture and the lying posture of the human body. The frame is arranged on the seat frame, the seat frame is rotatably fixed on the base, the base is used to support the seat frame and the backrest frame, and one end of the calf assembly is pivotally connected to the seat frame; the push rod includes A guide rod and a sliding block, the sliding block is reciprocatingly arranged on the guide rod, and one end of the guide rod is fixed or hinged on the base;

The swing rod assembly includes a front swing rod and a calf push rod. One end of the front swing rod is pivoted with the seat frame, and the other end is pivoted with the slider. A limit block is provided on the front swing rod, and one end of the calf push rod is pivoted. is pivotally connected to the slider, and the other end of the lower leg push rod is pivotally connected to the lower leg assembly;

When the slider is pushed, the lower leg push rod pushes the lower leg assembly to move around the seat frame, and when the front swing rod rotates with the slider to the limit block on the front swing rod and the seat frame, the The front swing rod and the limiting block jointly push the seat frame to rotate relative to the base, until the lower leg assembly and the seat frame are lifted simultaneously, so that the seat frame is transformed from a sitting posture to a lying posture.

Further, as an executable solution, the swing rod assembly further includes a rear swing rod, one end of the rear swing rod is pivotally connected to the seat frame, and the other end is pivotally connected to the slider, and a limit block is also provided on the rear swing rod. , the front swing bar and the rear swing bar are arranged in parallel.

Further, as an executable solution, the swing link assembly further includes a rotating connection piece pivotally connected to the slider, when the slider is pushed, the rotation link is connected to the front swing link and/or Driven by the rear swing bar, it forms a certain angle with the slider.

Further, as an executable solution, the swing rod assembly further includes a tension spring, the tension spring is arranged between the lower leg push rod and the front swing rod, one end of the tension spring is fixed on the slider, and the other end of the tension spring is fixed on the slider. One end is fixed on the seat frame, in the process that the push rod pushes the slider forward, the tension spring is used to advance the seat frame towards the push rod, so that before the limit block abuts the seat frame, the seat frame The frame is fixed relative to the push rod.

Further, as an executable solution, the tension springs are a pair, which are respectively disposed on the left and right sides of the push rod.

Further, as an executable solution, the chair frame further includes an anti-clamping component, the anti-clamping component includes an anti-clamping member and an anti-clamping tension spring, one end of the anti-clamping member is hinged with the seat frame, and the other end is connected with the calf push rod. Hinged, one end of the anti-clamping tension spring is fixed to one end of the anti-clamping member, and the other end is fixed to the calf assembly. A rubber gasket is fixed on the side of the anti-clamping member close to the calf assembly. When the seat frame is in a sitting position, the rubber gasket Abutting with the calf assembly.

Further, as an executable solution, the base includes a left side panel and a right side panel, and the seat frame is pivotally connected to the left side panel and the right side panel through two swing rods, respectively.

By adopting the above technical solutions, the present invention can achieve the following technical effects: compared with the prior art, the chair frame, through the single push rod structure, realizes the switch between the sitting posture state and the back-back state, and simultaneously realizes the sitting posture state. The backrest does not move and the calf is lifted independently, so as to meet the user's demand for diversifying the calf angle adjustment in the sitting position, reduce the cost of the chair frame, and simplify the operation of the function of the chair frame.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. , for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 to 3 are schematic diagrams showing the structure of the chair frame from the sitting posture state to the calf lifting to the zero gravity state independently according to the embodiment of the present invention;

FIGS. 4-6 are schematic diagrams showing a partial enlarged structure of the components of the seat frame, the lower leg, the push rod and the swing rod assembly in FIGS. 1-3;

Figures 7 and 8 are schematic cross-sectional views of the components of the pendulum assembly shown in Figures 1 to 6;

FIG. 9 is a schematic diagram of an exploded structure of the pendulum rod assembly in FIGS. 1 to 8 .

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

1 to 6, an embodiment of the present invention provides a chair frame, including a seat frame 1, a base, a calf assembly 2, a backrest frame 3, a push rod 4 and a swing rod assembly; the backrest frame 3 is provided with On the seat frame 1, the seat frame 1 is rotatably fixed on the base, the base is used to support the seat frame 1 and the backrest frame 3, and one end of the calf assembly 2 is pivotally connected to the seat frame 1; The push rod 4 includes a guide rod and a sliding block 11 , the sliding block 11 is reciprocatingly disposed on the guide rod, and one end of the guide rod is fixed or hinged on the base through a push rod ear seat 5 .

The swing rod assembly includes a front swing rod 6 and a calf push rod 9. The front swing rod 6 is an adapter with three mounting holes. Equipped with a muffler sleeve or a muffler gasket, a mounting hole at one end of the front swing rod 6 is pivotally connected to the seat frame 1 through a rotating shaft, the mounting hole at the middle end is pivotally connected to the slider 11 through a rotating shaft, and the mounting hole at the other end passes through A rotating shaft is pivotally connected to one end of the lower leg push rod 9 , the front swing rod 6 is provided with a limiting block 12 , and the other end of the lower leg push rod 9 is pivotally connected to the lower leg assembly 2 .

When the slider 11 is pushed, the lower leg push rod 9 pushes the lower leg assembly 2 to move around the seat frame 1 , when the front swing rod 6 rotates with the slider 11 to the limit block 12 on the front swing rod 6 When abutting with the seat frame 1, the front swing rod 6 and the limit block 12 together push the seat frame 1 to rotate relative to the base, until the calf assembly 2 and the seat frame 1 are lifted at the same time, so that the seat frame changes from the sitting position to the seat frame. Lie down posture. Further, in order to stabilize the seat frame during the movement, the swing rod assembly may further include a rear swing rod 7, one end of the rear swing rod 7 is pivotally connected to the seat frame 1, and the other end is pivotally connected to the slider 11, The rear swing rod 7 is an adapter with two mounting holes, and each mounting hole is provided with a muffler sleeve or a muffler washer, and the front swing rod 6 and the rear swing rod 7 are arranged in parallel; wherein, the front swing rod 6 and the rear swing rod 7 are a pair, which are respectively arranged on the left and right sides of the push rod 4, and can be pivotally connected to the slider 11 through the rotating connecting piece 10. When the sliding block 11 is pushed, the rotating connecting piece 10 Driven by the front swing bar 6 and/or the rear swing bar 7, it forms a certain angle with the slider. It should be noted that, only one of the front swing bar 6 and the rear swing bar 7 needs to be provided with a limit block 12 to realize the motion process of this solution. Of course, in order to consider the stability of the seat frame, the front swing bar 6 and the rear swing bar The same position of the rear swing rod 7 is provided with a limiting block 12 , which is not limited in the embodiment of the present invention. Specifically, the sectional view and exploded view of the pendulum rod assembly can be shown in FIGS. 7 to 9 .

Further, in one example, in order to meet the diverse needs of users, for example, the angle of the calf can be adjusted independently according to different needs when in an upright sitting posture, and the calf assembly can be lifted and lowered to provide a better user experience. It also includes a tension spring 8, which is arranged between the lower leg push rod 9 and the front swing rod 6, one end of the tension spring 8 is fixed on the slider 11, and the other end of the tension spring 8 is fixed on the seat frame 1 , in the process that the push rod 4 pushes the slider 11 forward, the tension spring 8 is used to move the seat frame toward the push rod 4, so that before the limit block 12 abuts with the seat frame 1, the The seat frame 1 is fixed relative to the push rod 4 . And the tension springs 8 are a pair, which are respectively arranged on the left and right sides of the push rod 4 .

Specifically, when the push rod 4 pushes the slider 11 to move, under the action of the tension spring 8, the stable seat frame 1 does not move, so that the lower leg assembly 2 rotates relative to the backrest frame 3 first. When the limit block 12 is pressed against the bottom of the seat frame 1, the slider 11 continues to push forward, and the pushing force of the push rod is greater than the pulling force of the tension spring 8, then the swing rod assembly will push the seat frame 1 so that the backrest frame 3 is opposite to the seat frame 1 Rotate until the calf assembly and the front end of the seat frame 1 are lifted at the same time, so that the seat frame changes from the sitting position to the lying position. Therefore, a push rod is realized to independently control the lifting of the calf, and the chair frame can be transformed from a sitting posture state to a lying down state, which enriches the posture of the chair frame and expands the function of the chair frame.

Further, in one example, as shown in FIG. 6 , in order to prevent foreign objects from being caught under the calf assembly when the calf assembly is reset, the chair frame further includes an anti-pinch component, which includes an anti-pinch member 13 and an anti-pinch pull. Spring 14, one end of the anti-clamping member 13 is hinged with the seat 1 frame, and the other end is hinged with the calf push rod 9, one end of the anti-clamping tension spring 14 is fixed on one end of the anti-clamping member 13, and the other end is fixed on the calf assembly 2, so A rubber gasket 15 is fixed on the side of the anti-pinch member 13 close to the calf assembly 2 , and the rubber gasket 15 is in contact with the calf assembly 2 when the seat frame is in a sitting position. When the calf assembly is lifted and reset to the sitting position, if there is a foreign object under the calf assembly, under the action of the anti-pinch tension spring, the calf will not be directly tightened and reset, but will form a certain angle. And because the rubber gasket is set, there will be no metal collision sound when resetting.

Further, as shown in FIGS. 1 to 3 , in order to cooperate with the chair frame to achieve a zero-gravity state, the base includes a left side plate 16 and a right side plate (not shown in the figure), and two pendulums pass through two pendulums on both sides of the seat frame 1 respectively. The rod 18 is pivotally connected to the left side plate 16 and the right side plate. When the seat frame is adjusted from the sitting position to the zero gravity state, the seat frame 1 is driven by the swing rod 18 to cooperate with the bottom roller or roller structure (not shown in the figure) of the backrest frame 3 and the backrest frame 3 opposite the left side plate 16 together. And the right side of the back plate, to achieve zero gravity state. That is to say, the technology of the embodiments of the present invention

The scheme makes the single push rod realize calf first through structural adjustment

The movement mode of lifting the back and falling back, under the cooperation of the push rod and the swing rod assembly, the calf is lifted independently, and the limit structure is supplemented to limit the space limit of the asynchronous movement, so as to achieve the action switching between independent movement and synchronous linkage. During exercise, the lifting angle of the calf can be adjusted independently to meet the comfort needs of different users in different situations. In the process of switching the seat from the sitting position to the zero-gravity mode, the calf is first lifted to a limited position and then moves synchronously with the seat frame to the zero-gravity state; when the seat is switched from the zero-gravity mode to the sitting position, the calf and the seat frame Synchronous reset is performed first, and after the reset of the seat frame is completed, the calf continues to be reset to the limited position independently, so that the single push rod can synchronize and separate the movements of the calf and the seat frame.

The chair frame, through the single push rod structure, not only realizes the switching between the sitting posture state and the inverted back state, but also realizes that in the sitting posture state, the backrest does not move and the calf is lifted independently, so as to satisfy the user's diversification of the calf angle in the sitting posture state. The need for adjustment is reduced, the cost of the seat frame is reduced, and the operation of the seat frame function is simplified. Although the preferred embodiments of the present application have been described, those skilled in the art will appreciate the basic

creative concepts, additional changes and modifications may be made to these embodiments. Therefore, the appended claims are intended to be construed to include the preferred embodiment and all changes and modifications that fall within the scope of this application. Obviously,

Various changes and modifications can be made to the present application by those skilled in the art without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims (7)

1. A chair frame can realize the transformation of human sitting posture and lying down posture, and is characterized by comprising a seat frame, a base, a shank component, a backrest frame, a push rod and a swing rod component; the backrest frame is arranged on the seat frame, the seat frame is rotationally fixed on the base, the base is used for supporting the seat frame and the backrest frame, and one end of the shank component is pivoted on the seat frame; the push rod comprises a guide rod and a slide block, the slide block can be arranged on the guide rod in a reciprocating manner, and one end of the guide rod is fixed or hinged on the base;

the swing rod component comprises a front swing rod and a shank push rod, one end of the front swing rod is pivoted with the seat frame, the other end of the front swing rod is pivoted with the sliding block, the front swing rod is provided with a limiting block, one end of the shank push rod is pivoted on the sliding block, and the other end of the shank push rod is pivoted with the shank component;

when the sliding block is pushed, the shank push rod pushes the shank component to move around the seat frame, when the front swing rod rotates to the limiting block on the front swing rod along with the sliding block to be abutted against the seat frame, the front swing rod and the limiting block push the seat frame to rotate relative to the base together until the shank component and the seat frame are lifted simultaneously, and the seat frame is changed from a sitting posture to a lying posture.

2. The chair frame according to claim 1, wherein the swing link assembly further comprises a rear swing link, one end of the rear swing link is pivotally connected to the seat frame, the other end of the rear swing link is pivotally connected to the slider, the rear swing link is also provided with a stopper, and the front swing link and the rear swing link are arranged in parallel.

3. The chair frame according to claim 1 or 2, wherein the swing link assembly further comprises a rotary connecting member pivotally connected to the slider, and when the slider is pushed, the rotary connecting member forms a certain angle with the slider under the driving of the front swing link and/or the rear swing link.

4. The chair frame according to claim 1, wherein the rocker assembly further comprises a tension spring disposed between the lower leg push rod and the front rocker, one end of the tension spring being fixed to the slider and the other end of the tension spring being fixed to the seat frame, the tension spring being adapted to advance the seat frame toward the push rod during movement of the slider pushed forward by the push rod such that the seat frame is fixed relative to the push rod before the stop abuts the seat frame.

5. The chair frame according to claim 4, wherein the tension springs are a pair and are respectively disposed on the left and right sides of the push rod.

6. The chair frame according to claim 1, characterized in that, the chair frame is still including preventing pressing from both sides the subassembly, should prevent pressing from both sides the subassembly including preventing the folder and preventing pressing from both sides the extension spring, prevent pressing from both sides a piece one end and articulate with the seat frame, the other end and articulate with the shank push rod, prevent pressing from both sides extension spring one end and be fixed in and prevent pressing from both sides a piece one end, the other end is fixed in the shank subassembly, prevent that the folder is close to shank subassembly one side and has set firmly a rubber gasket, during the chair frame position of sitting state, this rubber gasket and shank subassembly.

7. The chair frame according to claim 1, wherein said base comprises a left side plate and a right side plate, and wherein said seat frame is pivotally connected to said left side plate and said right side plate by two swing links, respectively.

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