Small foot plate telescopic mechanism, seat framework and electric sofa

Abstract

The utility model relates to a small foot plate telescoping mechanism, seat framework and electric sofa, the small foot plate telescoping mechanism comprises a small foot plate supporting rod, the front side and the rear side of the small foot plate supporting rod are respectively and movably connected with a front rocker and a rear rocker, the middle of the rear rocker is provided with a rotating rod, the front end of the rotating rod is movably connected to the bottom of the front rocker, and the rear end of the rotating rod is movably connected to the bottom of the rear rocker. The bottom of the rear rocker is movably connected with a driving arm; when the small foot plate telescopic mechanism stretches, the small foot plate can stretch forwards for a long distance, and the phenomenon of blocking cannot occur.

Description

Technical Field

[0001] The utility model relates to the technical field of seat accessories, and particularly relates to a small footrest telescopic mechanism, a seat frame and an electric sofa. Background Art

[0002] The small footrest telescopic mechanism is an important part of the seat frame. In the patent document with the patent application publication number CN216797072U and the patent name of a footrest extension mechanism and a seat telescopic device, when the footrest extension mechanism extends, the second footrest plate 92 extends forward a short distance; in the patent document with the patent application publication number CN218978444U and the patent name of a sliding hidden extended footrest structure, the transmission component can drive the extension plate 3 to slide so as to enable the extension plate 3 to extend forward a long distance, but the extension plate 3 is prone to jamming problems when sliding along the chute direction; how to enable the small footrest to extend forward a long distance and not jam has become a technical problem that those skilled in the art are eager to solve. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a small footrest telescopic mechanism, a seat frame and an electric sofa. When the small footrest telescopic mechanism extends, the small footrest can extend forward a long distance and will not jam.

[0004] To solve the above technical problem, a small footrest telescopic mechanism provided by the utility model comprises a small footrest support rod. The front and rear sides of the small footrest support rod are respectively movably connected with a first front rocker and a rear rocker. A rotating rod is arranged in the middle of the rear rocker. The front end of the rotating rod is movably connected to the bottom of the first front rocker. The bottom of the rear rocker is movably connected with a driving arm.

[0005] A seat frame includes a frame body. Footrest telescopic assemblies are respectively provided on the left and right sides of the frame body. A small footrest telescopic mechanism is connected to the footrest telescopic assembly. The footrest telescopic assembly includes a top support rod. The tail end of the top support rod is movably connected to a rocker arm. The bottom of the rocker arm is movably connected to the frame body. The front end of the top support rod is movably connected to a second front rocker. A linkage plate is movably connected adjacent to the front end of the top support rod. The linkage plate is rotatably arranged on the frame body. The bottom of the linkage plate is movably connected to a connecting rod. The top of the connecting rod is movably connected adjacent to the tail end of the second front rocker. The front end of the linkage plate is movably connected to a pull rod. A rear support rod is rotatably arranged adjacent to the front end of the second front rocker. The bottom of the rear support rod is movably connected to the front end of the pull rod. The front end of the second front rocker is movably connected to a front support rod. The tail end of the rotating rod is movably connected to the top of the front support rod. The driving arm is rotatably arranged in the middle of the front support rod. The tail end of the driving arm is movably connected to the top adjacent to the rear support rod. The top of the rear support rod is movably connected to a footrest support rod. The front end of the footrest support rod is movably connected to a front pull rod. The bottom of the front pull rod is movably connected below the tail end of the rotating rod. A driving device for driving the left and right linkage plates to rotate synchronously is provided on the frame body. During operation, the driving device drives the left and right linkage plates to rotate synchronously, so that the footrest telescopic assembly switches between the extended state and the retracted state. When the footrest telescopic assembly extends, it can lift the user's legs and feet. When the footrest telescopic assembly retracts, it can lower the user's legs and feet.

[0006] Further preferably, a bottom frame is provided at the bottom of the frame body. An electric push rod is movably connected to the rear side frame of the bottom frame. The front end of the electric push rod is movably connected to a cross support rod. Rockers are respectively provided on the left and right sides of the cross support rod. The bottom of the rocker is movably connected to the frame body. The top of the rocker is movably connected to an upper pull rod. The tail ends of the left and right upper pull rods are respectively movably connected above the left and right top support rods.

[0007] Further preferably, a turning rod is movably connected to the top of the rear rocker. A downward extending lower pull rod is provided at the front end of the turning rod. A fixing rod located below the turning rod is provided on the small footrest support rod. The fixing rod is used to support the turning rod. A tension spring is provided between the lower pull rod and the fixing rod. A small footrest is provided between the left and right turning rods. A footrest is provided between the left and right footrest support rods. When the small footrest telescopic mechanism retracts, if the front end of the small footrest abuts against an obstacle below it, the tension spring will be stretched by force. At this time, the small footrest telescopic mechanism can continue to retract, which can effectively prevent the small footrest from pinching hands or hitting and damaging obstacles.

[0008] An electric sofa, which includes the seat frame described above.

[0009] Advantages of the present utility model: During operation, when the footrest telescopic assembly extends, it can drive the small footrest telescopic mechanism to extend simultaneously. When the footrest telescopic assembly contracts, it can drive the small footrest telescopic mechanism to contract simultaneously. When both the footrest telescopic assembly and the small footrest telescopic mechanism are in the extended state, the small footrest is located in front of the footrest, and the small footrest and the footrest are arranged in a straight line. The distance between the small footrest and the footrest is relatively large, that is, when the small footrest telescopic mechanism extends, it drives the small footrest to extend forward by a relatively long distance. When both the footrest telescopic assembly and the small footrest telescopic mechanism are in the contracted state, the small footrest is located below the footrest, and both the small footrest and the footrest are vertically arranged and in a straight line. The footrest telescopic assembly and the small footrest telescopic mechanism are not prone to jamming during the extension or contraction process. Therefore, when the small footrest telescopic mechanism of the present new type extends, the small footrest can extend forward by a relatively long distance without jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] To clearly illustrate the innovative principle of the utility model and its advantages compared with the existing small footrest telescopic mechanism, the following non-limiting examples applying the principle will be described with the aid of the drawings. In the figures:

[0011] Figure 1 Schematic diagram of the small footrest telescopic mechanism of the present utility model in the extended state;

[0012] Figure 2 Front view of the seat frame;

[0013] Figure 3 For Figure 2 Stereogram;

[0014] Figure 4 For Figure 2 Stereogram;

[0015] Figure 5 For Figure 4 Partial enlarged view at A;

[0016] Figure 6 Schematic diagram of the small footrest telescopic mechanism in the contracted state. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present new type with reference to the drawings in the embodiments of the present new type. Obviously, the described embodiments are only a part of the embodiments of the present new type, rather than all of the embodiments.

[0018] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present new type without creative efforts shall fall within the protection scope of the present new type.

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0020] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment 1

[0021] As Figures 1-4 , a small footrest telescopic mechanism includes a small footrest support rod 1. The front and rear sides of the small footrest support rod 1 are respectively movably connected to a first front rocker 2 and a rear rocker 3. A rotating rod 4 is provided in the middle of the rear rocker 3. The front end of the rotating rod 4 is movably connected to the bottom of the first front rocker 2. The bottom of the rear rocker 3 is movably connected to a driving arm 5. Embodiment 2

[0022] As Figures 1-4, a seat frame, comprising a frame body 6, footrest telescopic assemblies are respectively arranged on the left and right sides of the frame body 6, and the small footrest telescopic mechanism described in Embodiment 1 is connected to the footrest telescopic assemblies. The footrest telescopic assembly includes a top support rod 7, the tail end of the top support rod 7 is movably connected to a rocker arm 20, the bottom of the rocker arm 20 is movably connected to the frame body 6, the front end of the top support rod 7 is movably connected to a second front rocker 8, a linkage plate 9 is movably connected adjacent to the front end of the top support rod 7, the linkage plate 9 is rotatably arranged on the frame body 6, the bottom of the linkage plate 9 is movably connected to a connecting rod 10, the top of the connecting rod 10 is movably connected adjacent to the tail end of the second front rocker 8, the front end of the linkage plate 9 is movably connected to a pull rod 11, a rear support rod 12 is rotatably arranged adjacent to the front end of the second front rocker 8, the bottom of the rear support rod 12 is movably connected to the front end of the pull rod 11, the front end of the second front rocker 8 is movably connected to a front support rod 13, the tail end of the rotating rod 4 is movably connected to the top of the front support rod 13, the driving arm 5 is rotatably arranged in the middle of the front support rod 13, the tail end of the driving arm 5 is movably connected adjacent to the top of the rear support rod 12, the top of the rear support rod 12 is movably connected to a footrest support rod 14, the front end of the footrest support rod 14 is movably connected to a front pull rod 15, the bottom of the front pull rod 15 is movably connected below the tail end of the rotating rod 4, and a driving device for driving the left and right linkage plates 9 to rotate synchronously is arranged on the frame body 6; during operation, the driving device drives the left and right linkage plates 9 to rotate synchronously, so that the footrest telescopic assembly switches between the extended state and the retracted state; when the footrest telescopic assembly extends, it can lift the user's legs and feet, and when the footrest telescopic assembly retracts, it can lower the user's legs and feet.

[0023] Preferably, as Figure 3 , a bottom frame 16 is arranged at the bottom of the frame body 6, an electric push rod 17 is movably connected to the rear side frame of the bottom frame 16, the front end of the electric push rod 17 is movably connected to a cross support rod 18, rocker arms 19 are respectively arranged on the left and right sides of the cross support rod 18, the bottom of the rocker arms 19 is movably connected to the frame body 6, the top of the rocker arms 19 is movably connected to upper pull rods 21, and the tail ends of the left and right upper pull rods 21 are respectively movably connected above the left and right top support rods 7.

[0024] Preferably, as Figure 5, a turning rod 22 is movably connected to the top of the rear rocker 3. A downwardly extending pull rod 23 is provided at the front end of the turning rod 22. A fixed rod 24 is provided on the small footrest support rod 1 and is located below the turning rod 22. The fixed rod 24 is used to support the turning rod 22. A tension spring 25 is provided between the pull rod 23 and the fixed rod 24. A small footrest 26 is provided between the left and right turning rods 22, and a footrest 27 is provided between the left and right footrest support rods 14; when the small footrest telescopic mechanism contracts, if the front end of the small footrest 26 abuts against an obstacle below it, the tension spring 25 will be stretched by the force. At this time, the small footrest telescopic mechanism can continue to contract, which can effectively prevent the small footrest 26 from pinching hands or hitting and damaging obstacles. Embodiment 3

[0025] An electric sofa, which includes the seat frame described in Embodiment 2.

[0026] During operation, when the footrest telescopic assembly extends, it can drive the small footrest telescopic mechanism to extend at the same time. When the footrest telescopic assembly contracts, it can drive the small footrest telescopic mechanism to contract at the same time; such as Figures 1-4 , when the footrest telescopic assembly and the small footrest telescopic mechanism are both in the extended state, the small footrest 26 is located in front of the footrest 27, and the small footrest 26 and the footrest 27 are arranged in a straight line. The distance between the small footrest 26 and the footrest 27 is relatively large, that is, when the small footrest telescopic mechanism extends, it drives the small footrest 26 to extend forward for a relatively long distance; such as Figure 6 , when the footrest telescopic assembly and the small footrest telescopic mechanism are both in the contracted state, the small footrest 26 is located below the footrest 27, and both the small footrest 26 and the footrest 27 are vertically arranged and in a straight line; the footrest telescopic assembly and the small footrest telescopic mechanism are not prone to jamming during the extension or contraction process; therefore, when the small footrest telescopic mechanism of this embodiment extends, it can make the small footrest extend forward for a relatively long distance and there will be no jamming phenomenon.

[0027] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle described in the present invention, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. A small footrest telescopic mechanism, characterized in that: The invention comprises a foot support rod (1), wherein the front and rear sides of the foot support rod (1) are respectively movably connected to a first front rocker (2) and a rear rocker (3), a rotating rod (4) is arranged in the middle of the rear rocker (3), the front end of the rotating rod (4) is movably connected to the bottom of the first front rocker (2), and the bottom of the rear rocker (3) is movably connected to a driving arm (5).

2. A seat frame, comprising a frame body (6), and footrest telescopic assemblies are respectively arranged on the left and right sides of the frame body (6), characterized in that: The footrest telescopic assembly is connected to the footrest telescopic mechanism according to claim 1, and the footrest telescopic assembly includes a top support rod (7), the tail end of the top support rod (7) is movably connected to a rocker arm (20), the bottom of the rocker arm (20) is movably connected to the skeleton body (6), the front end of the top support rod (7) is movably connected to the second front rocker arm (8), the front end adjacent to the top support rod (7) is movably connected to a linkage plate (9), the linkage plate (9) is rotatably set on the skeleton body (6), the bottom of the linkage plate (9) is movably connected to a connecting rod (10), the top of the connecting rod (10) is movably connected to the tail end adjacent to the second front rocker arm (8), the front end of the linkage plate (9) is movably connected to a pull rod (11), and the front end adjacent to the second front rocker arm (8) is rotatably set The rear support rod (12) is movably connected to the front end of the pull rod (11), the front end of the second front rocker (8) is movably connected to the front support rod (13), the tail end of the rotating rod (4) is movably connected to the top of the front support rod (13), the driving arm (5) is rotatably arranged in the middle of the front support rod (13), the tail end of the driving arm (5) is movably connected to the top of the adjacent rear support rod (12), the top of the rear support rod (12) is movably connected to the footrest support rod (14), the front end of the footrest support rod (14) is movably connected to the front pull rod (15), the bottom of the front pull rod (15) is movably connected to the bottom of the tail end of the rotating rod (4), and the skeleton body (6) is provided with a driving device for driving the left and right linkage plates (9) to rotate synchronously.

3. The seat frame according to claim 2, characterized in that: A bottom frame (16) is provided at the bottom of the skeleton body (6), an electric push rod (17) is movably connected to the rear side frame of the bottom frame (16), a front end of the electric push rod (17) is movably connected to a cross support rod (18), a rocker (19) is provided on the left and right sides of the cross support rod (18), the bottom of the rocker (19) is movably connected to the skeleton body (6), the top of the rocker (19) is movably connected to an upper pull rod (21), and the tail ends of the left and right upper pull rods (21) are movably connected to the top of the left and right top support rods (7), respectively.

4. The seat frame according to claim 2, characterized in that: The top of the rear rocker (3) is movably connected with a tipping rod (22). The front end of the tipping rod (22) is provided with a downwardly extending pull rod (23). A fixed rod (24) located below the tipping rod (22) is provided on the small footrest support rod (1). The fixed rod (24) is used for supporting the tipping rod (22). A tension spring (25) is arranged between the pull rod (23) and the fixed rod (24). A small footrest (26) is arranged between the left and right tipping rods (22). A footrest (27) is arranged between the left and right footrest support rods (14).

5. An electric sofa, characterized in that: The electric sofa comprises a seat frame according to any one of claims 2-4.

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