Back-pushing chair frame and back-pushing chair

Abstract

A back-pushing chair frame and a back-pushing chair, the back-pushing chair frame comprises a chair main body frame, a rotating telescopic mechanism, a supporting frame and a gas spring, the chair main body frame comprises a chair seat frame and a chair back frame, one end of the chair seat frame is rotatably connected with the chair back frame, the other end of the chair seat frame is connected with the rotating telescopic mechanism, and the supporting frame is arranged between the chair back frame and the rotating telescopic mechanism; the chair back frame drives the rotating telescopic mechanism to move through the supporting frame, and the gas spring is arranged between the supporting frame and the chair seat frame and used for controlling the angle between the supporting frame and the chair seat frame; compared with the prior art, by pushing the chair back frame or rotating the telescopic mechanism, the gas spring is stretched or contracted to change the angle between the chair seat frame and the chair back frame, and after the angle between the chair seat frame and the chair back frame is adjusted, the angle between the chair seat frame and the chair back frame is adjusted. The posture between the chair seat frame and the chair back frame is limited and fixed according to the self-locking property of the gas spring, and a proper sitting or lying posture is provided for a user.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a push-back chair frame and a push-back chair. Background Art

[0002] A push-back chair is a uniquely designed chair that is designed to provide comfortable sitting support and a reclining experience. Push-back chairs usually have adjustment functions such as adjusting the backrest angle to meet people's different needs; when working, people can adjust the push-back chair to a sitting position to provide good support for the spine and waist, and when resting, people can adjust the push-back chair to a leaning position to relax muscles and relieve physical fatigue. At the same time, in order to avoid the push-back chair taking up a small space when not in use, the push-back chair is usually designed to be a storage-friendly structure, so that people can use and put it away at any time according to their needs.

[0003] To solve the above problems, Chinese patent application number 202021219463.4 discloses a foldable backrest chair frame. The foldable backrest chair frame disclosed above is provided with a reversible flip backrest frame, and is supplemented by an armrest frame and fasteners to achieve the limit of the flip backrest frame before and after flipping, so as to reduce the space occupied by the backrest chair frame. However, the foldable backrest chair frame disclosed above cannot adjust and control the angle between the seat and the backrest to provide users with sitting support at different angles. Utility Model Content

[0004] In view of the above shortcomings, the technical problem to be solved by the utility model is to provide a push-back chair frame and a push-back chair, which can adjust and control the angle between the seat and the backrest to provide users with sitting support at different angles.

[0005] According to one aspect of the utility model, a push-back chair frame is provided, comprising a seat body frame, a rotating and telescopic mechanism, a support frame and a gas spring; the seat body frame comprises a seat frame and a back frame, one end of the seat frame is rotatably connected to the back frame, and the other end is connected to the rotating and telescopic mechanism; the support frame is arranged between the back frame and the rotating and telescopic mechanism, and the back frame drives the rotating and telescopic mechanism to move through the support frame; the gas spring is arranged between the support frame and the seat frame, and is used to control the angle between the support frame and the seat frame.

[0006] As a preferred solution of the utility model, the seat frame includes a seat and two seat support members; the two seat support members are symmetrically arranged on both sides of the seat and fixedly connected to the seat.

[0007] As a preferred solution of the utility model, the rotating telescopic mechanism includes a first active connecting rod, a second active connecting rod, a first driven connecting rod and a second driven connecting rod; the first driven connecting rod is located between the first active connecting rod and the second active connecting rod, and is respectively rotatably connected to the bottom of the first active connecting rod and the second active connecting rod; the second driven connecting rod is rotatably connected to the bottom of the second active connecting rod.

[0008] As a preferred solution of the utility model, the top of the first active connecting rod and the top of the second active connecting rod are both rotatably connected to one end of the seat away from the seat back frame.

[0009] As a preferred solution of the utility model, the support frame includes a first support link and two second support links respectively arranged at both ends of the first support link; the first support link is respectively perpendicular to the two second support links and fixedly connected to the two second support links.

[0010] As a preferred solution of the utility model, one end of the second supporting link is rotatably connected to the chair back frame, and the other end is rotatably connected to the first active link adjacent thereto.

[0011] As a preferred solution of the utility model, the gas spring is perpendicular to the first supporting link, one end of the gas spring is rotatably connected to the first supporting link, and the other end is rotatably connected to the seat.

[0012] As a preferred solution of the utility model, a foot support plate is arranged at one end of the seat away from the seat back frame, and the foot support plate is connected to the first driven connecting rod and the second driven connecting rod.

[0013] As a preferred solution of the utility model, a first connecting plate is arranged between the rotating and telescopic mechanism and the seat frame, and a second connecting plate is arranged between the rotating and telescopic mechanism and the foot support plate.

[0014] According to another aspect of the utility model, a push-back chair is provided, comprising any one of the push-back chair frames described above.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the user applies a pulling force to the gas spring through the back frame, or rotates the telescopic mechanism to apply a pushing force to the gas spring, so that the gas spring stretches or contracts to change the angle between the seat frame and the back frame; at the same time, after adjusting the angle of the seat frame and the back frame, the posture between the seat frame and the back frame can be restricted and fixed according to the self-locking property of the gas spring, providing the user with a suitable sitting or lying posture. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a push-back chair frame provided in an embodiment of the present application;

[0017] Figure 2A schematic diagram of the structure of a chair seat frame provided in an embodiment of the present application;

[0018] Figure 3 A schematic diagram of the structure of the support frame provided in the embodiment of the present application;

[0019] Figure 4 A schematic structural diagram of a push-back chair frame provided in an embodiment of the present application;

[0020] Figure markings: seat main body frame 1, seat frame 1-1, seat 1-11, seat support 1-12, seat back frame 1-2, rotating and telescopic mechanism 2, first active link 2-1, second active link 2-2, first driven link 2-3, second driven link 2-4, first connecting plate 2-5, second connecting plate 2-6, support frame 3, first support link 3-1, second support link 3-2, gas spring 4, foot support plate 5. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0022] The following description provides examples and does not limit the scope, applicability or examples set forth in the claims. Changes may be made to the functions and arrangements of the elements described without departing from the scope of the present application. Various processes or components may be appropriately omitted, substituted or added to each example. For example, the described method may be performed in an order different from the order described, and various steps may be added, omitted or combined. In addition, features described in some examples may be combined in other examples.

[0023] According to one aspect of the embodiment of the present application, a push-back chair frame is provided; see Figure 1 , Figure 1 FIG. 1 shows a schematic structural diagram of a push-back chair frame provided in an embodiment of the present application. Figure 1 As shown, a push-back chair frame includes a seat body frame 1, a rotating and telescopic mechanism 2, a support frame 3 and a gas spring 4; the seat body frame 1 includes a seat frame 1-1 and a back frame 1-2, one end of the seat frame 1-1 is rotatably connected to the back frame 1-2, and the other end is connected to the rotating and telescopic mechanism 2; the support frame 3 is arranged between the back frame 1-2 and the rotating and telescopic mechanism 2, and the back frame 1-2 drives the rotating and telescopic mechanism 2 to move through the support frame 3; the gas spring 4 is arranged between the support frame 3 and the seat frame 1-1, and is used to control the angle between the support frame 3 and the seat frame 1-1.

[0024] Specifically, a double rocker mechanism is formed between the seat frame 1-1, the back frame 1-2, the rotating and telescopic mechanism 2 and the support frame 3. The back frame 1-2 serves as an active component. The user relies on the back frame 1-2 to rotate the back frame 1-2 relative to the seat frame 1-1. At the same time, the back frame 1-2 drives the support frame 3 arranged at the bottom thereof to move, so that the support frame 3 drives the rotating and telescopic mechanism 2 to rotate.

[0025] Furthermore, the two ends of the gas spring 4 are respectively connected to one end of the seat frame 1-1 and one end of the support frame 3, so as to control the distance between the seat frame 1-1 and the support frame 3, and further control the rotation angle between the back frame 1-2 and the seat frame 1-1; when the gas spring 4 is subjected to a large thrust or tension, the gas spring 4 begins to contract or stretch; when the gas spring 4 is not subjected to sufficient thrust or tension, the gas spring 4 self-locks, preventing the back frame 1-2 from rotating relative to the seat frame 1-1, thereby maintaining the angle formed between the back frame 1-2 and the seat frame 1-1.

[0026] As an optional embodiment of the present application, the seat frame 1-1 includes a seat 1-11 and two seat supports 1-12; the two seat supports 1-12 are symmetrically arranged on both sides of the seat 1-11 and fixedly connected to the seat 1-11.

[0027] See here Figure 2 The structural diagram of the seat frame provided by the embodiment of the present application is shown. Figure 2 As shown, specifically, the seat 1-11 is used to provide support for the user, and the seat support 1-12 is used to provide a suitable seat height for the user and provide support for the push-back chair frame as a whole.

[0028] As an optional embodiment of the present application, the rotating telescopic mechanism 2 includes a first active link 2-1, a second active link 2-2, a first driven link 2-3 and a second driven link 2-4; the first driven link 2-3 is located between the first active link 2-1 and the second active link 2-2, and is rotationally connected to the bottom of the first active link 2-1 and the second active link 2-2 respectively; the second driven link 2-4 is rotationally connected to the bottom of the second active link 2-2.

[0029] See here Figure 4 The structure diagram of a push-back chair frame provided by an embodiment of the present application is shown. Figure 4 As shown, specifically, the first active link 2-1 is connected to the support frame 3, and the support frame 3 pushes the first active link 2-1 to rotate, so that the first active link 2-1 pushes the first driven link 2-3 to drive the second active link 2-2 and the second driven link 2-4 connected to the second active link 2-2 to rotate.

[0030] Furthermore, one end of the first driven link 2-3 away from the first active link 2-1 and one end of the second driven link 2-4 away from the second active link 2-2 are both connected to the footrest 5, so that the user can push and rotate the telescopic mechanism 2 through the footrest 5 to push the support frame 3 and the backrest frame 1-2 to adjust the angle between the backrest frame 1-2 and the seat 1-11, so that the user can get a suitable sitting posture.

[0031] As an optional embodiment of the present application, the top of the first active link 2-1 and the top of the second active link 2-2 are both rotatably connected to one end of the seat 1-11 away from the seat back frame 1-2.

[0032] like Figure 1 and Figure 4 As shown, specifically, the rotating and telescopic mechanism 2 is connected to the seat 1-11 through a first active connecting rod 2-1 and a second active connecting rod 2-2.

[0033] As an optional embodiment of the present application, the support frame 3 includes a first support link 3-1 and two second support links 3-2 respectively arranged at both ends of the first support link 3-1; the first support link 3-1 is respectively perpendicular to the two second support links 3-2 and fixedly connected to the two second support links 3-2.

[0034] like Figure 1 and 3 As shown, specifically, the support frame 3 is used to connect the backrest frame 1-2 and the rotating and telescopic mechanism 2 to transmit the thrust from the backrest frame 1-2 or the rotating and telescopic mechanism 2; at the same time, the support frame 3 cooperates with the gas spring 4 to stabilize the posture between the seat 1-11 and the backrest frame 1-2, so the support frame 3 needs to have a certain structural strength.

[0035] As an option in the embodiment of the present application, one end of the second supporting link 3-2 is rotatably connected to the chair back frame 1-2, and the other end is rotatably connected to the first active link 2-1 adjacent thereto.

[0036] As an option in the embodiment of the present application, the gas spring 4 is perpendicular to the first support link 3-1, one end is rotatably connected to the first support link 3-1, and the other end is rotatably connected to the seat 1-11.

[0037] like Figure 1 and Figure 4 As shown, specifically, the gas spring 4 connects the support frame 3 and the seat 1-11. When the gas spring 4 is in a self-locking state, the gas spring 4 cannot be extended or retracted, so that the support frame 3 is in a fixed state relative to the seat 1-11, and the chair back frame 1-2 or the rotating and retracting mechanism 2 cannot adjust the posture of the push-back chair frame.

[0038] As an optional embodiment of the present application, a foot support plate 5 is arranged at one end of the seat 1-11 away from the seat back frame 1-2, and the foot support plate 5 is connected to the first driven link 2-3 and the second driven link 2-4.

[0039] See here Figure 1 The structure diagram of a push-back chair frame provided by an embodiment of the present application is shown. Figure 1 As shown, specifically, the footrest 5 is used to provide leg support for the user, and at the same time, the user presses the footrest 5 to drive the rotating telescopic mechanism 2 to shrink the push-back chair frame and adjust the push-back chair frame from a lying posture to a sitting posture.

[0040] As an option in the embodiment of the present application, a first connecting plate 2 - 5 is arranged between the rotating and telescopic mechanism 2 and the seat frame 1 - 1 , and a second connecting plate 2 - 6 is arranged between the rotating and telescopic mechanism 2 and the foot support plate 5 .

[0041] like Figure 1 and Figure 4 As shown, specifically, the first connecting plate 2-5 is fixed on the seat frame 1-1, the second connecting plate 2-6 is fixed on the foot support plate 5, the rotating and telescopic mechanism 2 is rotatably connected with the seat frame 1-1 through the first connecting plate 2-5, and the rotating and telescopic mechanism 2 is rotatably connected with the foot support plate 5 through the second connecting plate 2-6.

[0042] According to another aspect of the embodiments of the present application, a push-back chair is further provided, and the push-back chair includes the push-back chair frame in any one of the above embodiments.

[0043] The backrest frame 1-2 and the seat 1-11, the support frame 3 and the backrest frame 1-2, the gas spring 4 and the seat 1-11, and the gas spring 4 and the support frame 3 are all connected by latches to form a rotating connection, so as to facilitate the installation and disassembly of the various parts without affecting the rotation.

[0044] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0045] Although this article uses more of the following terms: chair body frame 1, seat frame 1-1, seat 1-11, seat support 1-12, backrest frame 1-2, rotating telescopic mechanism 2, first active link 2-1, second active link 2-2, first driven link 2-3, second driven link 2-4, first connecting plate 2-5, second connecting plate 2-6, support frame 3, first supporting link 3-1, second supporting link 3-2, gas spring 4, foot support plate 5, etc., it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A push-back chair frame, characterized in that: It comprises a seat main body frame (1), a rotating and telescopic mechanism (2), a supporting frame (3) and a gas spring (4); The seat main body frame (1) comprises a seat frame (1-1) and a seat back frame (1-2); one end of the seat frame (1-1) is rotatably connected to the seat back frame (1-2), and the other end is connected to the rotating and telescopic mechanism (2); The support frame (3) is arranged between the chair back frame (1-2) and the rotating and telescopic mechanism (2), and the chair back frame (1-2) drives the rotating and telescopic mechanism (2) to move through the support frame (3); The gas spring (4) is arranged between the support frame (3) and the seat frame (1-1) and is used to control the angle between the support frame (3) and the seat frame (1-1).

2. A push-back chair frame according to claim 1, characterized in that: The seat frame (1-1) comprises a seat (1-11) and two seat support members (1-12); the two seat support members (1-12) are symmetrically arranged on both sides of the seat (1-11) and are fixedly connected to the seat (1-11).

3. A push-back chair frame according to claim 1, characterized in that: The rotating telescopic mechanism (2) comprises a first active link (2-1), a second active link (2-2), a first driven link (2-3) and a second driven link (2-4); the first driven link (2-3) is located between the first active link (2-1) and the second active link (2-2), and is rotatably connected to the bottom of the first active link (2-1) and the second active link (2-2), respectively; and the second driven link (2-4) is rotatably connected to the bottom of the second active link (2-2).

4. A push-back chair frame according to claim 3, characterized in that: The top of the first active connecting rod (2-1) and the top of the second active connecting rod (2-2) are both rotatably connected to an end of the seat (1-11) away from the seat back frame (1-2).

5. The push-back chair frame according to claim 1, characterized in that: The support frame (3) comprises a first support link (3-1) and two second support links (3-2) respectively arranged at two ends of the first support link (3-1); the first support link (3-1) is respectively perpendicular to the two second support links (3-2) and is fixedly connected to the two second support links (3-2).

6. A push-back chair frame according to claim 5, characterized in that: One end of the second supporting link (3-2) is rotatably connected to the chair back frame (1-2), and the other end is rotatably connected to the first active link (2-1) adjacent thereto.

7. The push-back chair frame according to claim 1, characterized in that: The gas spring (4) is perpendicular to the first supporting connecting rod (3-1), one end of the gas spring is rotatably connected to the first supporting connecting rod (3-1), and the other end of the gas spring is rotatably connected to the seat (1-11).

8. The push-back chair frame according to claim 1, characterized in that: A foot support plate (5) is arranged at one end of the chair seat (1-11) away from the chair back frame (1-2), and the foot support plate (5) is connected to the first driven connecting rod (2-3) and the second driven connecting rod (2-4).

9. The push-back chair frame according to claim 1, characterized in that: A first connecting plate (2-5) is arranged between the rotating and telescopic mechanism (2) and the seat frame (1-1), and a second connecting plate (2-6) is arranged between the rotating and telescopic mechanism (2) and the foot support plate (5).

10. A push-back chair, characterized in that: The push-back chair frame comprises the frame of any one of claims 1-9.

Images