Seat frame

Abstract

The novel seat framework relates to a seat framework, which comprises a bottom frame, side plates arranged above the left and right sides of the bottom frame respectively, top support rods arranged above the side plates, foot plate telescopic assemblies and backrest assemblies arranged on the top support rods, front rocker arms movably connected to the front sides of the side plates, connecting rods movably connected to the top of the front rocker arms, rear rocker arms movably connected to the tail end of the connecting rods, the rear rocker arms being rotatably arranged on the side plates, drive rods movably connected to the bottom of the rear rocker arms, the front end of the drive rods being connected to the foot plate telescopic assemblies, a fixed rod arranged between the front rocker arms of the left and right sides, a first electric push rod arranged between the rear side frame of the bottom frame and the fixed rod, a connecting rod arranged between the front end of the left and right side plates, a second electric push rod movably connected to the connecting rod, a cross rod movably connected to the tail end of the second electric push rod, and the two ends of the cross rod being connected to the backrest assemblies of the left and right sides respectively; the seat framework has simple structure and low cost.

Description

Technical Field

[0001] This invention relates to the field of seat accessories technology, specifically to a seat frame. Background Technology

[0002] The seat frame is an important component of the seat. Existing seat frames generally have functions such as sitting flat, lying flat, and leg-crossing. In order to achieve the above functions, the structure of existing seat frames is designed to be relatively complex and costly.

[0003] The technical problem to be solved by this invention is to provide a seat frame that has a simple structure and low cost. Utility Model Content

[0004] To solve the above-mentioned technical problems, the present invention provides a seat frame, including a base frame, with side plates respectively provided on the upper left and right sides of the base frame, and a top support rod provided on the upper part of the side plates. A footrest telescopic assembly and a backrest assembly are respectively provided at the front and rear ends of the top support rod. A front rocker arm is movably connected to the front side of the side plate, and a connecting rod is movably connected to the top of the front rocker arm. A rear rocker arm is movably connected to the tail end of the connecting rod. The middle part of the rear rocker arm is rotatably mounted on the side plate, and a drive rod is movably connected to the bottom of the rear rocker arm. The front end of the drive rod is connected to the footrest telescopic assembly. A fixed rod is provided between the left and right front rockers, and a first electric actuator is movably connected to the fixed rod. The tail end of the first electric actuator is movably connected to the rear side frame of the base frame. A connecting rod is provided between the front ends of the left and right side plates, and a second electric actuator is movably connected to the connecting rod. A crossbar is movably connected to the tail end of the second electric actuator, and the two ends of the crossbar are respectively connected to the left and right backrest assemblies.

[0005] In a further preferred embodiment, the footrest telescopic assembly includes a front swing arm and a rear swing arm movably connected to the front end of the top support rod. A front support rod is movably connected to the end of the front swing arm away from the top support rod, and a foot support rod is movably connected to the top of the front support rod. A rear support rod is movably connected to the end of the rear swing arm away from the top support rod. The front swing arm is rotatably positioned near the bottom of the rear support rod, and the end of the foot support rod away from the front support rod is movably connected to the top of the rear support rod. The footrest telescopic assembly includes a retracted state and an extended state. When the footrest telescopic assembly is in the retracted state, it allows the user's legs to lower down; when the footrest telescopic assembly is in the extended state, it allows the user's legs to lift up.

[0006] In a further preferred embodiment, the backrest assembly includes a backrest fixing rod located at the tail end of the top support rod and extending upward. A backrest connecting rod is movably connected to the top of the backrest fixing rod. A backrest support rod extending downward is provided on the backrest connecting rod. The bottoms of the left and right backrest support rods are respectively fixed to the two ends of the crossbar. The backrest assembly has a simple structure, low cost, and good structural stability. The backrest assembly includes a vertical state and a reclining state. When the backrest assembly is in the vertical state, it enables the user's back to be in a vertical position. When the backrest assembly is in the reclining state, it enables the user's back to be in a reclining position.

[0007] In a further preferred embodiment, a connecting plate is provided between the side plate and the top support rod, and mounting side plates are respectively provided on the left and right sides of the fixed rod, with the bottom of the front rocker arm movably connected to the mounting side plate.

[0008] A method for operating the aforementioned seat frame includes the following steps:

[0009] 1) In the initial state, the footrest telescopic assembly is in the retracted state, and the backrest assembly is in the vertical state, which allows the user's legs to fall down and the back to be in a vertical state (i.e., a sitting posture):

[0010] 2) Control the push rod of the first electric push rod to retract, so that the footrest telescopic assembly enters the extended state, at which time the user's legs can be raised (i.e., the leg-crossing posture).

[0011] 3) Control the push rod of the second electric actuator to retract, so that the backrest assembly enters the reclining state, thus enabling the user to recline (i.e., lie flat).

[0012] The beneficial effects of this invention are as follows: During operation, the left and right footrest telescopic components are synchronously extended or retracted by the first electric actuator, and the left and right backrest components are synchronously moved by the second electric actuator, so that the seat frame can achieve a sitting posture, a leg-crossing posture, or a lying posture; the seat frame of this invention has a simple structure and low cost. Attached Figure Description

[0013] To clearly illustrate the novel innovative principle and its advantages over existing seat frames, possible embodiments are described below with the aid of accompanying drawings through non-limiting examples applying the stated principle. In the drawings:

[0014] Figure 1 A three-dimensional view of the new type of seat frame in a seated position;

[0015] Figure 2 for Figure 1 The main view;

[0016] Figure 3 A three-dimensional view of the seat frame of this novel design with the legs crossed.

[0017] Figure 4 A three-dimensional view of the seat frame of this novel design with the legs crossed.

[0018] Figure 5 for Figure 3 The main view;

[0019] Figure 6 A three-dimensional view of the seat frame of this novel design with the legs crossed.

[0020] Figure 7 A perspective view of the novel seat frame in a lying position;

[0021] Figure 8 for Figure 7 The main view. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this invention.

[0024] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this new embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0025] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixation," etc., should be interpreted broadly. For example, "fixation" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Example 1

[0026] like Figure 1-8A seat frame includes a base frame 1, with side panels 2 located on the upper left and right sides of the base frame 1. A top support rod 3 is located above the side panels 2. A footrest telescopic assembly 4 and a backrest assembly 5 are located at the front and rear ends of the top support rod 3, respectively. A front rocker arm 6 is movably connected to the front side of the side panels 2. A connecting rod 7 is movably connected to the top of the front rocker arm 6. A rear rocker arm 8 is movably connected to the tail end of the connecting rod 7. The middle of the rear rocker arm 8 is rotatably mounted on the side panels 2. A drive rod 9 is movably connected to the bottom of the rear rocker arm 8. The front end of rod 9 is connected to the footrest telescopic assembly 4. A fixed rod 10 is provided between the left and right front rocker arms 6. A first electric push rod 11 is movably connected to the fixed rod 10. The tail end of the first electric push rod 11 is movably connected to the rear side frame of the bottom frame 1. A connecting rod 12 is provided between the front ends of the left and right side plates 2. A second electric push rod 13 is movably connected to the connecting rod 12. A crossbar 14 is movably connected to the tail end of the second electric push rod 13. The two ends of the crossbar 14 are respectively connected to the left and right backrest assemblies 5.

[0027] Preferably, the footrest telescopic assembly 4 includes a front swing rod 15 and a rear swing rod 16 movably connected to the front end of the top support rod 3. The end of the front swing rod 15 away from the top support rod 3 is movably connected to a front support rod 17, and the top of the front support rod 17 is movably connected to a foot support rod 18. The end of the rear swing rod 16 away from the top support rod 3 is movably connected to a rear support rod 19. The front swing rod 15 is rotatably positioned near the bottom of the rear support rod 19, and the end of the foot support rod 18 away from the front support rod 17 is movably connected to the top of the rear support rod 19. The footrest telescopic assembly 4 includes a retracted state and an extended state. When the footrest telescopic assembly 4 is in the retracted state, it allows the user's legs to lower down. When the footrest telescopic assembly 4 is in the extended state, it allows the user's legs to lift up.

[0028] Preferably, the backrest assembly 5 includes a backrest fixing rod 20 located at the tail end of the top support rod 3 and extending upward. The top of the backrest fixing rod 20 is movably connected to a backrest connecting rod 21. The backrest connecting rod 21 is provided with a backrest support rod 22 extending downward. The bottoms of the left and right backrest support rods 22 are respectively fixed to the two ends of the crossbar 14. The backrest assembly 5 has a simple structure, low cost, and good structural stability. The backrest assembly 5 includes a vertical state and a reclining state. When the backrest assembly 5 is in the vertical state, it can achieve a vertical back position for the user. When the backrest assembly 5 is in the reclining state, it can achieve a reclining back position for the user.

[0029] Preferably, a connecting plate 23 is provided between the side plate 2 and the top support rod 3, and mounting side plates 24 are provided on the left and right sides of the fixed rod 10, and the bottom of the front rocker arm 6 is movably connected to the mounting side plate 24. Example 2

[0030] A method for operating a seat frame as described in Embodiment 1 includes the following steps:

[0031] 1) In the initial state, such as Figure 1-2 When the footrest telescopic assembly 4 is in the retracted state and the backrest assembly 5 is in the vertical state, the user's legs can be lowered and the back can be in a vertical position (i.e., a sitting posture).

[0032] 2) Control the push rod of the first electric push rod 11 to retract, so that the footrest telescopic assembly 4 enters the extended state, such as... Figure 3-6 At this time, the user's legs can be lifted (i.e., the leg-crossing posture).

[0033] 3) Control the retraction of the push rod of the second electric push rod 13, so that the backrest assembly 5 enters the reclining state, such as... Figure 7-8 This allows the user to achieve a back arch (i.e., a supine position).

[0034] During operation, the left and right footrest telescopic components 4 are synchronously extended or retracted by the first electric actuator 11, and the left and right backrest components 5 are synchronously moved by the second electric actuator 13, so that the seat frame can realize a sitting posture, a leg-crossing posture, or a lying posture. The seat frame of this embodiment has a simple structure and low cost.

[0035] The above description is the preferred embodiment of this invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention.

Claims

1. A seat frame, comprising a base frame (1), characterized in that: The bottom frame (1) has side plates (2) on its upper left and right sides respectively. A top support rod (3) is provided on the upper side of the side plate (2). The front and rear ends of the top support rod (3) are respectively provided with a footrest telescopic assembly (4) and a backrest assembly (5). A front rocker arm (6) is movably connected to the front side of the side plate (2). A connecting rod (7) is movably connected to the top of the front rocker arm (6). A rear rocker arm (8) is movably connected to the tail end of the connecting rod (7). The middle part of the rear rocker arm (8) is rotatably mounted on the side plate (2). A drive rod (9) is movably connected to the bottom of the rear rocker arm (8). The front of the drive rod (9) The end is connected to the footrest telescopic assembly (4), and a fixed rod (10) is provided between the left and right front rocker arms (6). A first electric push rod (11) is movably connected to the fixed rod (10). The tail end of the first electric push rod (11) is movably connected to the rear side frame of the bottom frame (1). A connecting rod (12) is provided between the front ends of the left and right side plates (2). A second electric push rod (13) is movably connected to the connecting rod (12). A crossbar (14) is movably connected to the tail end of the second electric push rod (13). The two ends of the crossbar (14) are respectively connected to the left and right backrest assemblies (5).

2. The seat frame according to claim 1, characterized in that: The footrest telescopic assembly (4) includes a front swing rod (15) and a rear swing rod (16) movably connected to the front end of the top support rod (3). The front swing rod (15) is movably connected to a front support rod (17) at the end away from the top support rod (3). The top of the front support rod (17) is movably connected to a foot support rod (18). The rear swing rod (16) is movably connected to a rear support rod (19) at the end away from the top support rod (3). The front swing rod (15) is rotatably positioned at the bottom adjacent to the rear support rod (19). The end of the foot support rod (18) away from the front support rod (17) is movably connected to the top of the rear support rod (19).

3. The seat frame according to claim 1, characterized in that: The backrest assembly (5) includes a backrest fixing rod (20) located at the tail end of the top support rod (3) and extending upward. The top of the backrest fixing rod (20) is movably connected to a backrest connecting rod (21). The backrest connecting rod (21) is provided with a backrest support rod (22) extending downward. The bottom of the left and right backrest support rods (22) is fixed to both ends of the crossbar (14).

4. The seat frame according to claim 1, characterized in that: A connecting plate (23) is provided between the side plate (2) and the top support rod (3). The left and right sides of the fixed rod (10) are respectively provided with mounting side plates (24). The bottom of the front rocker (6) is movably connected to the mounting side plate (24).

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