A seat frame and a seat

Abstract

The utility model relates to a sitting furniture technical field, especially a kind of sitting furniture frame and sitting furniture, including seat frame, the seat frame front side is provided with rotating telescopic mechanism, the seat frame rear side is provided with backrest frame, the seat frame lower side is provided with transmission frame, the transmission frame is used to drive in the rotating telescopic mechanism and backrest frame, the seat frame with the transmission frame between being provided with actuator, for driving the transmission frame with the transmission frame between doing relative motion, the seat frame with the backrest frame between being provided with connecting piece, the connecting piece includes connecting portion and the hinged part located in the connecting portion both ends, the hinged part of the connecting piece one end with the seat frame rear side articulates, the hinged part of other end with the transmission frame rear side articulates;The connecting portion both sides are equipped with inwardly bent limiting edge, both sides the limiting edge jointly form sliding installation groove, the sliding installation groove is used for the backrest frame lower end along predetermined direction and enters.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, and in particular to a seating frame and a seating fixture. Background Technology

[0002] A push-back chair is a uniquely designed seat intended to provide comfortable sitting support and a reclining experience. Push-back chairs typically feature adjustable backrest angles to meet different needs. When working, users can adjust the chair to a sitting position for good support of the spine and lower back; when resting, they can adjust it to a reclining position to relax muscles and relieve fatigue. Furthermore, to avoid taking up too much space when not in use, push-back chairs are usually designed for easy storage, allowing users to use and fold them away as needed.

[0003] To address the aforementioned issues, a push-back chair frame and chair were authorized and disclosed on March 7, 2025, with authorization publication number CN222565425U. The disclosed push-back chair frame changes the angle between the seat frame and back frame by pushing the back frame or rotating the telescopic mechanism to stretch or contract the gas spring. Simultaneously, after adjusting the angle of the seat and back frames, the self-locking property of the gas spring restricts and fixes the posture between the seat and back frames, providing the user with a suitable sitting or reclining posture. However, in the aforementioned disclosed push-back chair frame, the back frame and seat frame are fixedly connected and cannot be disassembled. Therefore, packaging must be done using the maximum dimensions of both the back and seat frames, resulting in large packaging sizes, high transportation costs, and inconvenience. Utility Model Content

[0004] Therefore, in view of the above problems, this utility model proposes a seat frame and seat in which the backrest frame and seat frame can be separated to facilitate packaging and transportation.

[0005] This utility model is achieved through the following technical solution: A seating frame includes a seat frame, a rotating and telescopic mechanism is provided on the front side of the seat frame, a backrest frame is provided on the rear side of the seat frame, and a transmission frame is provided on the lower side of the seat frame. The transmission frame is used to transmit power to the rotating and telescopic mechanism and the backrest frame. An actuator is provided between the seat frame and the transmission frame to drive relative movement between the transmission frame and the transmission frame. A connector is provided between the seat frame and the backrest frame. The connector includes a connecting part and hinged parts located at both ends of the connecting part. The hinged part at one end of the connector is hinged to the rear side of the seat frame, and the hinged part at the other end is hinged to the rear side of the transmission frame. The connecting part has inwardly bent limiting edges on both sides, and the limiting edges on both sides together form a sliding mounting groove, which is used for the lower end of the backrest frame to pass through in a predetermined direction.

[0006] As a further improvement of this utility model, the sliding mounting groove extends vertically, the sliding mounting groove has an opening for the lower end of the backrest frame to pass through vertically, and the sliding mounting groove gradually narrows in the vertical direction.

[0007] As a further improvement of this utility model, a plug-in plate is provided at the lower end of the backrest frame, and the plug-in plate is inserted vertically into the sliding mounting groove.

[0008] As a further improvement of this utility model, a mounting base is provided at the rear end of the seat frame. The mounting base includes an integrally formed hinge plate and a connecting plate. The connecting plate is disposed on the hinge plate. The cross-section of both the hinge plate and the connecting plate includes a vertical extension and a horizontal extension disposed at the lower end of the vertical extension, for connecting the seat frame.

[0009] As a further improvement of this utility model, the width of the connecting plate is greater than the width of the hinge plate.

[0010] As a further improvement of this utility model, the rotating telescopic mechanism includes a first active link, a second active link, a first driven link, and a second driven link; The first driven link is located between the first driving link and the second driving link, and is rotatably connected to the bottom of the first driving link and the second driving link, respectively; The second driven link is rotatably connected to the bottom of the second driving link.

[0011] As a further improvement of this utility model, a first connecting plate is provided between the first active connecting rod, the second active connecting rod and the seat frame, and a second connecting plate is provided between the end of the first driven connecting rod and the end of the second driven connecting rod.

[0012] As a further improvement of this utility model, the transmission 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 perpendicular to the two second support links and is fixedly connected to the two second support links.

[0013] As a further improvement of this utility model, the actuator is perpendicular to the first support link, one end of the actuator is rotatably connected to the middle of the first support link, and the other end of the actuator is rotatably connected to the seat frame.

[0014] Based on the same concept, this utility model patent also discloses a seating fixture, including a seating body and a seating frame as described above.

[0015] The beneficial effects of this utility model are as follows: In this utility model patent, one end of the actuator is rotatably connected to the rotating telescopic mechanism, and the other end is rotatably connected to the transmission frame. The actuator is controlled to extend and retract, driving the transmission frame to move. The other end of the transmission frame is provided with a connecting piece. When the transmission frame is displaced under the drive of the actuator, it will drive the backrest frame to move through the connecting piece, thereby achieving the effect of controlling the angle between the backrest frame and the seat frame. At the same time, in this embodiment, since the lower end of the seat frame is inserted into the sliding mounting groove along a predetermined direction (in this embodiment, along the vertical direction, from top to bottom), the backrest frame and the seat frame can be detached. During packaging and transportation, the backrest frame can be disassembled and packaged separately, thereby effectively reducing the packaging volume, transportation costs and storage space occupation. During installation, simply align the lower end of the backrest frame with the sliding mounting groove and insert it vertically from top to bottom to complete the quick assembly. The operation is convenient and efficient, without the need for additional tools. This detachable design not only improves the convenience of the product in production and logistics, but also makes it easier for users to maintain or replace the backrest frame individually during use, further enhancing the product's practicality and durability. Attached Figure Description

[0016] The preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of this utility model, wherein: Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model patent; Figure 2 This is a schematic diagram of the structure on another side of an embodiment of this utility model patent; Figure 3 This is a schematic diagram of the connector structure in an embodiment of this utility model patent; Figure 4 This is a schematic diagram of the mounting base structure in an embodiment of this utility model patent.

[0017] The following components are labeled in the diagram: 1. Seat frame; 2. Backrest frame; 3. Transmission frame; 3. First support link; 301. Second support link; 302. Actuator; 4. Connector; 5. Connecting part; 501. Hinge part; 502. Limiting edge; 503. Sliding mounting groove; 504. Insert plate; 6. Mounting base; 7. Hinge plate; 8. Connecting plate; 9. First driving link; 10. Second driving link; 11. First driven link; 12. Second driven link; 13. First connecting plate; 14. Second connecting plate; 15. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0019] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the construction shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0020] refer to Figures 1 to 4 The present utility model embodiment discloses that: A seating arrangement includes a seating body and a seating frame. The seating body is configured as a sofa or a push-back chair. The seating frame includes a seat frame 1, a rotating and telescopic mechanism on the front side of the seat frame 1, a backrest frame 2 on the rear side of the seat frame 1, and a transmission frame 3 on the lower side of the seat frame 1. The transmission frame 3 is used to transmit power to the rotating and telescopic mechanism and the backrest frame 2. An actuator 4 is provided between the seat frame 1 and the transmission frame 3 to drive relative movement between the transmission frame 1 and the transmission frame 3. A connector 5 is provided between the backrest frames 2. The connector 5 includes a connecting part 501 and hinge parts 502 located at both ends of the connecting part 501. One end of the hinge part 502 is hinged to the rear side of the seat frame 1, and the other end of the hinge part 502 is hinged to the rear side of the transmission frame 3. The connecting part 501 has inwardly bent limiting edges 503 on both sides, which together form a sliding mounting groove 504. The sliding mounting groove 504 is used for the lower end of the backrest frame 2 to slide along... Inserted in a predetermined direction; In this embodiment, the actuator 4 is a telescopic cylinder. One end of the actuator 4 is rotatably connected to the rotating telescopic mechanism, and the other end is rotatably connected to the transmission frame 3. The actuator 4 is controlled to extend or retract, driving the transmission frame 3 to move. The other end of the transmission frame 3 is provided with a connecting member 5. When the transmission frame 3 is displaced under the drive of the actuator 4, it will drive the backrest frame 2 to move through the connecting member 5, thereby achieving the effect of controlling the angle between the backrest frame 2 and the seat frame 1. At the same time, in this embodiment, since the seat... The lower end of frame 1 is inserted into the sliding mounting groove 504 along a predetermined direction (vertical, from top to bottom in this embodiment), thereby achieving a detachable connection between the backrest frame 2 and the seat frame 1. During packaging and transportation, the backrest frame 2 can be disassembled and packaged separately, effectively reducing packaging volume, transportation costs, and storage space requirements. During installation, simply align the lower end of the backrest frame 2 with the sliding mounting groove 504 and insert it vertically from top to bottom for quick assembly. The operation is convenient and efficient, requiring no additional tools. This detachable structural design not only improves the convenience of product production and logistics but also allows users to easily maintain or replace the backrest frame 2 during use, further enhancing the product's practicality and durability.

[0021] The sliding mounting groove 504 extends vertically and has an opening for the lower end of the backrest frame 2 to be inserted vertically. The sliding mounting groove 504 gradually narrows vertically. When the lower end of the backrest frame 2 is inserted vertically to a predetermined distance, the insertion is restricted. At the same time, this narrowing design allows the lower end of the backrest frame 2 to form a tight fit with the inner wall of the sliding mounting groove 504 during insertion. As the insertion depth increases, the friction between the two gradually increases, thereby ensuring that the backrest frame 2 will not easily shake or fall off during use, effectively improving the stability and reliability of the connection structure.

[0022] The lower end of the backrest frame 2 is provided with a plug-in plate 6, which is inserted vertically into the sliding mounting groove 504. The two side walls of the plug-in plate 6 are adapted to the inner wall of the sliding mounting groove 504, and its width matches the width of the narrowing section of the sliding mounting groove 504, ensuring accurate guidance and smooth engagement during insertion. At the same time, the lower edge of the plug-in plate 6 is rounded to avoid scratching damage to the inner wall of the sliding mounting groove 504 during insertion, which protects the component structure and reduces the resistance during assembly, making the insertion operation smoother.

[0023] A mounting base 7 is provided at the rear end of the seat frame 1. The mounting base 7 includes an integrally formed hinge plate 8 and a connecting plate 9. The connecting plate 9 is disposed on the hinge plate 8. The cross-section of both the hinge plate 8 and the connecting plate 9 includes a vertical extension and a horizontal extension disposed at the lower end of the vertical extension for connecting the seat frame 1. The vertical extension of the hinge plate 8 has a hinge hole for hinged connection with the connecting member 5. The vertical extension and the horizontal extension of the connecting plate 9 both have screw holes. The vertical extension of the connecting plate 9 is attached to the rear end of the seat frame 1 and connected by bolts. The horizontal extension of the connecting plate 9 is connected to the seat frame. The mounting plate 7 is fitted against the bottom surface of the seat frame 1 to support the seat frame 1. The width of the connecting plate 9 is greater than the width of the hinge plate 8. This design allows for a larger contact area between the connecting plate 9 and the seat frame 1, which can more evenly distribute the pressure borne by the seat frame 1 and further enhance the stability of the connection between the mounting plate 7 and the seat frame 1. At the same time, the wider connecting plate 9 also provides ample space for drilling screw holes. Through the coordinated fixing of multiple sets of bolts, the loosening problem that may occur with a single bolt connection can be effectively avoided. This improves the overall structural strength and load-bearing capacity of the seating frame, ensuring that the chair or sofa can maintain good structural stability during long-term use.

[0024] The rotating telescopic mechanism includes a first active link 10, a second active link 11, a first driven link 12, and a second driven link 13. The first driven link 12 is located between the first active link 10 and the second active link 11, and is rotatably connected to the bottom of the first active link 10 and the second active link 11, respectively. The second driven link 13 is rotatably connected to the bottom of the second active link 11, as shown in the figure. The first active link 10 is connected to the transmission frame 3, and the transmission frame 3 pushes the first active link 10 to rotate, thereby causing the first active link 10 to push the first driven link 12, which in turn drives the second active link 11 and the second driven link 13 to rotate.

[0025] A first connecting plate 14 is provided between the first active link 10, the second active link 11 and the seat frame 1, wherein the ends of the first active link 10 and the second active link 11 are hinged to the first connecting plate 14, and a second connecting plate 15 is provided between the ends of the first driven link 12 and the second driven link 13, wherein the ends of the first driven link 12 and the second driven link 13 are hinged to the second connecting plate 15, and the second connecting plate 15 is used to connect the footrest plate.

[0026] The transmission frame 3 includes a first support link 301 and two second support links 302 respectively arranged at both ends of the first support link 301; the first support link 301 is perpendicular to the two second support links 302 and fixedly connected to the two second support links 302; the actuator 4 is perpendicular to the first support link 301, one end of the actuator 4 is rotatably connected to the middle of the first support link 301, and the other end of the actuator 4 is rotatably connected to the seat frame 1, so that by controlling the extension and retraction of the actuator 4, the telescopic transmission frame 3 can be driven to move.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A seating frame, comprising a seat frame (1), a rotating telescopic mechanism provided on the front side of the seat frame (1), a backrest frame (2) provided on the rear side of the seat frame (1), a transmission frame (3) provided on the lower side of the seat frame (1), the transmission frame (3) being used to transmit power to the rotating telescopic mechanism and the backrest frame (2), and an actuator (4) provided between the seat frame (1) and the transmission frame (3) for driving relative movement between the transmission frame (3), characterized in that: A connector (5) is provided between the seat frame (1) and the backrest frame (2). The connector (5) includes a connecting part (501) and hinge parts (502) located at both ends of the connecting part (501). The hinge part (502) at one end of the connector (5) is hinged to the rear side of the seat frame (1), and the hinge part (502) at the other end is hinged to the rear side of the transmission frame (3). The connecting part (501) has inwardly bent limiting edges (503) on both sides, and the limiting edges (503) on both sides together form a sliding mounting groove (504). The sliding mounting groove (504) is used for the lower end of the backrest frame (2) to pass through in a predetermined direction.

2. A seating frame according to claim 1, characterized in that: The sliding mounting groove (504) extends vertically and has an opening through which the lower end of the backrest frame (2) passes vertically. The sliding mounting groove (504) gradually narrows in the vertical direction.

3. A seating frame according to claim 2, characterized in that: The lower end of the backrest frame (2) is provided with a plug plate (6), which is inserted vertically into the sliding mounting groove (504).

4. A seating frame according to claim 1, characterized in that: The rear end of the seat frame (1) is provided with a mounting base (7). The mounting base (7) includes an integrally formed hinge plate (8) and a connecting plate (9). The connecting plate (9) is disposed on the hinge plate (8). The cross-section of the hinge plate (8) and the connecting plate (9) both include a vertical extension and a horizontal extension disposed at the lower end of the vertical extension, for connecting the seat frame (1).

5. A seating frame according to claim 4, characterized in that: The width of the connecting plate (9) is greater than the width of the hinge plate (8).

6. A seating frame according to claim 1, characterized in that: The rotating telescopic mechanism includes a first active link (10), a second active link (11), a first driven link (12), and a second driven link (13). The first driven link (12) is located between the first active link (10) and the second active link (11), and is rotatably connected to the bottom of the first active link (10) and the second active link (11), respectively; The second driven link (13) is rotatably connected to the bottom of the second driving link (11).

7. A seating frame according to claim 6, characterized in that: A first connecting plate (14) is provided between the first active link (10), the second active link (11) and the seat frame (1), and a second connecting plate (15) is provided between the end of the first driven link (12) and the end of the second driven link (13).

8. A seating frame according to claim 1, characterized in that: The transmission frame (3) includes a first support link (301) and two second support links (302) respectively arranged at both ends of the first support link (301); the first support link (301) is perpendicular to the two second support links (302) and is fixedly connected to the two second support links (302).

9. A seating frame according to claim 1, characterized in that: The actuator (4) is perpendicular to the first support link (301). One end of the actuator (4) is rotatably connected to the middle of the first support link (301), and the other end of the actuator (4) is rotatably connected to the seat frame (1).

10. A seating arrangement, characterized in that: It includes a seating body and a seating frame as described in any one of claims 1-9.

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