Electric sofa support for lifting loads

Abstract

The present invention relates to an electric sofa support suitable for lifting loads, comprising a base frame; a lifting frame, the two sides of which are connected to the base frame via a first connecting rod mechanism, and the lifting frame performs arc-shaped lifting motion on the base frame via the first connecting rod mechanism; two support members, which are respectively arranged on both sides of the lifting frame via a second connecting rod mechanism; a driving frame, which is rotatably connected to the lifting frame, and the two sides of the driving frame are respectively connected to the support members via driving rods, and the driving frame rotates backward, and the driving rods on both sides drive the support members to move; the driving frame rotates forward to abut against the raised limit on the connecting plate to drive the first connecting rod mechanism to lift; a direct-push motor, which is connected to the driving frame to drive the driving frame to rotate forward and backward. The direct-push motor is selected to cooperate with the driving frame and the driving rod to drive the support members and the lifting frame to move, thereby ensuring the stable arc-shaped lifting of the support members and the lifting frame.

Description

Technical Field

[0001] The invention relates to an electric sofa bracket suitable for lifting loads. Background Art

[0002] The maximum load-bearing capacity of the existing electric sofa bracket is about 120KG. With the increase of obese people, there is an urgent need for a large-load iron frame for elderly chairs and sofas. In the current electric sofa bracket, the lifting and lowering of the seat frame and the angle adjustment of the backrest are achieved through a push motor. Usually, the thrust of the push motor is greater than the pulling force of the motor, and the external mounting parts of the motor are required to be high during the pulling force. If the strength is not enough, it is easy to break, so it cannot bear large loads. The existing push motor can no longer meet the use requirements.

[0003] Secondly, there were also unreasonable aspects in the structural design of sofa stands in the past. The lifting frame inside was prone to swaying left and right when subjected to greater gravity, causing the stand to be unstable and easy to break. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide an electric sofa bracket suitable for lifting loads, and solve the problem that the previous electric sofa bracket has unreasonable structural design and is not easy to bear a large load.

[0005] The technical solution adopted by the present invention to solve the technical problem is: an electric sofa support suitable for lifting loads, comprising a base frame;

[0006] The lifting frame has two sides connected to the base frame via a first connecting rod mechanism, and the lifting frame performs arc lifting motion on the base frame via the first connecting rod mechanism;

[0007] Two support members are respectively arranged on both sides of the lifting frame via a second connecting rod mechanism;

[0008] The driving frame is swingably connected to the lifting frame, and the two sides of the driving frame are respectively connected to the supporting members via driving rods; the driving frame swings backward, and the supporting members are driven to move via the driving rods on both sides; the driving frame swings forward and abuts against the limiting protrusion of the lifting frame to drive the first connecting rod mechanism to lift;

[0009] The direct-push motor is connected to the driving frame to drive the driving frame to rotate forward and backward.

[0010] Further, the lifting frame includes two lifting installation plates, a front connecting rod and a rear connecting rod, the front connecting rod and the rear connecting rod are fixedly arranged between the two lifting installation plates, a pair of connecting plates are fixed on the front connecting rod, and a limiting protrusion for cooperating with the driving frame is formed on the connecting plate;

[0011] The driving frame is located between the lifting installation plates and is transferred to the lifting installation plates.

[0012] Furthermore, the first link mechanism includes a pair of front links and a pair of rear links, the lower ends of the front links and the rear links are rotatably connected to the base frame, and the upper ends of the front links and the rear links are rotatably connected to the lifting frame connecting plate; two reinforcing rods are arranged between the two front links.

[0013] Further, the second link mechanism includes a front rotating rod, a rear tilting rod and a rear rotating rod;

[0014] One end of the front rotating rod is rotatably connected to the front end of the lifting frame, and the other end of the front rotating rod is rotatably connected to the front end of the support member;

[0015] One end of the rear rotating rod is rotatably connected to the rear end of the lifting frame, the other end of the rear rotating rod is rotatably connected to the rear tilting rod, and the rear tilting rod is rotatably connected to the rear end of the supporting member.

[0016] Furthermore, the front rotating rod is connected to the front end of the lifting frame with a foot support bracket;

[0017] The rear tilt rod is connected to the backrest bracket at the rear end of the lifting frame.

[0018] Furthermore, the driving frame includes a driving cross arm and two swing arms, the swing arms are fixedly arranged at both ends of the driving cross arm, the upper ends of the swing arms are rotatably connected to the lifting frame, and the lower ends of the swing arms are rotatably connected to the driving rod.

[0019] The beneficial effects of the present invention are:

[0020] The invention provides an electric sofa bracket suitable for lifting loads, which uses a direct-push motor in conjunction with a drive frame and a drive rod to drive a support member and a lifting frame to move, thereby ensuring stable arc-shaped lifting of the support member and the lifting frame.

[0021] Secondly, two front and rear connecting rods are used in the middle of the lifting frame, which greatly improves the stability of the lifting frame in the horizontal direction. Similarly, two reinforcing rods are added to a pair of front connecting rods in the first connecting rod mechanism to improve the strength of the entire first connecting rod mechanism, thereby improving the ability of the first connecting rod mechanism to withstand larger loads. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below in conjunction with the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the lifting frame;

[0024] Figure 2 It is a schematic diagram of the drive frame;

[0025] Figure 3 It is a schematic diagram of the first linkage mechanism and the chassis;

[0026] Figure 4 This is a schematic diagram of the electric sofa support in its initial state;

[0027] Figure 5 This is a schematic diagram of the electric sofa support in the auxiliary standing state;

[0028] Figure 6 This is a schematic diagram of the electric sofa stand in TV state;

[0029] Figure 7 This is a schematic diagram of the electric sofa stand in a leisure state;

[0030] Among them, 1. base frame, 2. first connecting rod mechanism, 21. front connecting rod, 22. rear connecting rod, 23. reinforcing rod, 3. driving frame, 31. driving cross arm, 32. swing arm, 33. driving rod, 4. lifting frame, 41. lifting mounting plate, 42. front connecting rod, 43. rear connecting rod, 44. connecting plate, 51. foot support bracket, 52. backrest bracket, 6. support member, 7. linear motor, 81. front rotating rod, 82. rear rotating rod, 83. rear tilt rod. DETAILED DESCRIPTION

[0031] The present invention will now be further described in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0032] like Figures 1 to 7 As shown, an electric sofa support suitable for lifting a load comprises a base frame 1;

[0033] The lifting frame 4 is connected to the base frame 1 via the first link mechanism 2 on both sides, and the lifting frame 4 performs arc lifting motion on the base frame 1 via the first link mechanism 2;

[0034] Two support members 6 are respectively arranged on both sides of the lifting frame 4 through the second connecting rod mechanism;

[0035] The driving frame 3 is swingably connected to the lifting frame 4, and the two sides of the driving frame 3 are respectively connected to the supporting member 6 via the driving rods 33; the driving frame 3 swings backward, and the supporting member 6 is driven to move via the driving rods 33 on both sides; the driving frame 3 swings forward and abuts against the limiting protrusion of the lifting frame 4 to drive the first connecting rod mechanism 2 to lift;

[0036] The direct-push motor is connected to the driving frame 3 to drive the driving frame 3 to rotate forward and backward.

[0037] Specifically, Figure 1 As shown, the lifting frame 4 includes two lifting installation plates 41, a front connecting rod 42 and a rear connecting rod 43. The front connecting rod 42 and the rear connecting rod 43 are fixedly arranged between the two lifting installation plates 41. A pair of connecting plates 44 are fixed on the front connecting rod 42. The connecting plates are formed with limiting protrusions for cooperating with the driving frame.

[0038] The driving frame 3 is located between the front connecting rod 42 and the rear connecting rod 43 .

[0039] Two connecting rods are installed between the two lifting installation plates 41 to improve the strength of the lifting frame 4 itself and prevent it from deforming in the horizontal direction. The driving frame 3 is located between the front connecting rod 42 and the rear connecting rod 43 to improve the stability of the lifting frame 4.

[0040] Specifically, the first link mechanism 2 includes a pair of front links 21 and a pair of rear links 22, the lower ends of the front links 21 and the rear links 22 are rotatably connected to the base frame 1, and the upper ends of the front links 21 and the rear links 22 are rotatably connected to the connecting plate 44 of the lifting frame 4; two reinforcing rods 23 are arranged between the two front links 21. Two reinforcing rods 23 are added to the pair of front links 21 in the first link mechanism 2 to improve the strength of the entire first link mechanism 2, thereby improving the ability of the first link mechanism 2 to withstand a large load.

[0041] Specifically, Figure 5 As shown, the second connecting rod mechanism includes a front rotating rod 81, a rear tilting rod 83 and a rear rotating rod 82; one end of the front rotating rod 81 is rotatably connected to the front end of the lifting frame 4, and the other end of the front rotating rod 81 is rotatably connected to the front end of the support member 6; one end of the rear rotating rod 82 is rotatably connected to the rear end of the lifting frame 4, and the other end of the rear rotating rod 82 is rotatably connected to the rear tilting rod 83, and the rear tilting rod 83 is rotatably connected to the rear end of the support member 6.

[0042] The support member 6 swings in an arc shape through the front rotating rod 81 , the rear tilting rod 83 and the rear rotating rod 82 , and realizes up and down and forward and backward movements on the lifting frame 4 .

[0043] Specifically, the front rotating rod 81 is connected to the front end of the lifting frame 4 to the foot support bracket 51; the rear tilting rod 83 is connected to the rear end of the lifting frame 4 to the backrest bracket 52. The specific structures of the foot support bracket 51 and the backrest bracket 52 are existing mature mechanisms and are not described in detail here.

[0044] Specifically, Figure 2 As shown, the driving frame 3 includes a driving cross arm 31 and two swing arms 32. The swing arms 32 are fixedly arranged at both ends of the driving cross arm 31. The upper ends of the swing arms 32 are rotatably connected to the lifting frame 4, and the lower ends of the swing arms 32 are rotatably connected to the driving rod 33.

[0045] like Figure 4 As shown, the normal mode of the electric sofa support, at this time the user remains sitting; the linear motor 7 extends, driving the drive frame 3 to abut against the raised limit stops on the two connecting plates 44 of the lifting frame 4, so that the linear motor 7 drives the lifting frame 4 to lift to Figure 5 The standing assistance mode shown, in which the user can keep standing up and leaving the sofa.

[0046] In the normal mode of the electric sofa stand, the linear motor 7 retracts, driving the drive frame 3 to rotate backward on the lifting frame 4, and the swing arm 32 drives the support member 6 to move backward via the drive rod 33. When the support member 6 moves backward, the footrest bracket 51 is driven to unfold, and the electric sofa stand enters the TV mode, that is, the user is suitable for watching TV in this mode. As the linear motor 7 continues to drive the support member 6 to move backward via the drive frame 3, the backrest bracket 52 is driven to open, and the sofa stand enters the leisure mode.

[0047] The electric sofa support of the present invention is changed from a traditional push motor to a current linear motor 7, thereby providing a large-load electric thrust for the electric sofa support. The linear motor 7 cooperates with the newly designed drive frame 3 to drive the support member 6 to make an arc movement, that is, the arc movement of the support member 6 includes the up and down movement of the support member 6 and the forward and backward movement of the support member 6. The movement of the support member 6 finally drives the extension of the footrest bracket 51 and the backrest bracket 52.

[0048] The electric sofa bracket of the present invention also strengthens the structure of the lifting frame 4, and adopts two connecting rods to fix the lifting mounting plates 41 on both sides to improve the strength of the lifting frame 4; in addition, relying on this principle, the strength of the first connecting rod mechanism 2 is also strengthened. After the above improvements, the load capacity of the electric sofa bracket is greatly improved.

[0049] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An electric sofa stand suitable for lifting loads, characterized in that: Including chassis; The lifting frame has two sides connected to the base frame via a first connecting rod mechanism, and the lifting frame performs arc lifting motion on the base frame via the first connecting rod mechanism; Two support members are respectively arranged on both sides of the lifting frame via a second connecting rod mechanism; The driving frame is swingably connected to the lifting frame, and the two sides of the driving frame are respectively connected to the supporting members via driving rods; the driving frame swings backward, and the supporting members are driven to move via the driving rods on both sides; the driving frame swings forward and abuts against the limiting protrusion of the lifting frame to drive the first connecting rod mechanism to lift; The direct-push motor is connected to the driving frame to drive the driving frame to rotate forward and backward; The lifting frame includes two lifting installation plates, a front connecting rod and a rear connecting rod, wherein the front connecting rod and the rear connecting rod are fixedly arranged between the two lifting installation plates, a pair of connecting plates are fixed on the front connecting rod, and a limiting protrusion for cooperating with the driving frame is formed on the connecting plate; The driving frame is located between the lifting installation plates and is transferred to the lifting installation plates; The second linkage mechanism includes a front rotating rod, a rear tilting rod and a rear rotating rod; One end of the front rotating rod is rotatably connected to the front end of the lifting frame, and the other end of the front rotating rod is rotatably connected to the front end of the support member; One end of the rear rotating rod is rotatably connected to the rear end of the lifting frame, the other end of the rear rotating rod is rotatably connected to the rear tilting rod, and the rear tilting rod is rotatably connected to the rear end of the supporting member.

2. The electric sofa support suitable for lifting loads according to claim 1, characterized in that: The first link mechanism includes a pair of front links and a pair of rear links, the lower ends of the front links and the rear links are rotatably connected to the base frame, and the upper ends of the front links and the rear links are rotatably connected to the lifting frame connecting plate; two reinforcing rods are arranged between the two front links.

3. The electric sofa support suitable for lifting loads according to claim 1, characterized in that: The front rotating rod is connected to the front end of the lifting frame with a foot support bracket; The rear tilt rod is connected to the backrest bracket at the rear end of the lifting frame.

4. The electric sofa support suitable for lifting loads according to claim 1, characterized in that: The driving frame comprises a driving cross arm and two swing arms. The swing arms are fixedly arranged at both ends of the driving cross arm. The upper ends of the swing arms are rotatably connected to the lifting frame, and the lower ends of the swing arms are rotatably connected to the driving rod.

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