High-strength backrest driving connecting rod suitable for electric sofa

Abstract

The utility model provides a high-strength backrest driving connecting rod suitable for an electric sofa, which solves the problems that the sofa adjusting mode is too complicated and the like, and comprises a bottom frame, an electric push rod is arranged on the bottom frame, the telescopic end of the electric push rod is connected with a sliding frame which is arranged on the bottom frame in a sliding manner, and a swinging frame is arranged above the bottom frame in a swinging manner. A connecting rod assembly and a gear linkage assembly are in transmission connection between the sliding frame and the swing frame. The device has the advantages of simple adjusting structure, stable operation and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of intelligent furniture, and in particular relates to a high-strength backrest driving connecting rod suitable for an electric sofa. Background Art

[0002] A sofa is a type of furniture, usually a multi-seat chair with soft cushions, a backrest with springs or thick foam plastics, etc., and armrests on both sides. It is a soft furniture. The sofa is composed of a main frame, a seat structure, external fabrics and fillings. The backrest and the sofa seat are connected by a fixed structure. Usually, the sofa seat, backrest and armrests are covered with cloth covers, which can not only decorate the sofa as a whole and increase its beauty, but also increase its softness. In the application of home sofa backrests, the application of its electric drive mechanism must take into account the function and space layout issues, because the mainstream electric backrest mechanism body and the leg support connecting rod in the market share a motor for driving, which cannot take into account the independent adjustment requirements of the backrest, and does not fully take into account the user's diversified independent adjustment functional requirements. In addition, the existing sofa adjustment structure is too complicated, and its connecting rod structure causes the sofa to require additional space.

[0003] In order to solve the deficiencies of the prior art, people have conducted long-term exploration and proposed various solutions. For example, a Chinese patent document discloses an electric sofa frame [application number: 201510451426.3], which includes a base bracket, a footrest push mechanism, a footrest mechanism, a backrest mechanism and an electric push rod, the footrest push mechanism connects the footrest mechanism and the backrest mechanism, and the electric push rod drives the backrest mechanism; the base bracket includes a base placed at the bottom, a support assembly, a side plate and a seat plate, the footrest push mechanism includes a first footrest push rod, a swing rod and a second footrest push rod, the footrest mechanism includes a connecting rod assembly and a footrest board, and the backrest mechanism includes a connecting pipe, a first pin, a backrest support plate and a second pin.

[0004] The above solution solves the problem of supporting and driving the sofa to a certain extent, but the solution still has many shortcomings, such as the supporting and adjusting structure is too complicated, resulting in the sofa requiring additional floor space. Summary of the invention

[0005] The utility model aims to solve the above problems and provide a high-strength backrest driving connecting rod which is suitable for electric sofas and has a reasonable design and a simple structure.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a high-strength backrest driving connecting rod suitable for an electric sofa, comprising a bottom frame, an electric push rod is installed on the bottom frame, the telescopic end of the electric push rod is connected to a sliding frame slidably installed on the bottom frame, a swing frame is swingably installed above the bottom frame, and a connecting rod assembly and a gear linkage assembly are transmission-connected between the sliding frame and the swing frame.

[0007] In the above-mentioned high-strength backrest driving connecting rod suitable for electric sofas, a fixing boss with a fixing hole is arranged at the edge of the bottom frame, vertically arranged support frames are arranged on both sides of the bottom frame, and the swing frame is hinged to the top of the support frame.

[0008] In the above-mentioned high-strength backrest drive connecting rod suitable for electric sofas, the gear linkage assembly includes linkage racks arranged on both sides of the sliding frame, a speed change gear set meshing with the linkage racks is rotatably installed on the inner side of the support frame, and a swinging gear plate meshing with the speed change gear set is installed at the lower end of the swinging frame.

[0009] In the above-mentioned high-strength backrest driving connecting rod suitable for an electric sofa, a sliding guide rail is installed between the side of the sliding frame and the side of the bottom frame, and a locking assembly is installed between the sliding frame and the bottom frame.

[0010] In the above-mentioned high-strength backrest drive connecting rod suitable for electric sofas, the locking assembly includes an electromagnet installed in the bottom frame, the telescopic end of the electromagnet is connected to a locking block and an elastic reset part, a locking strip is installed at the lower end of the sliding frame, and locking teeth that mesh with each other are arranged between the locking strip and the locking block.

[0011] In the above-mentioned high-strength backrest driving connecting rod suitable for electric sofas, an assembly table with an assembly hole is arranged at the upper end of the swing frame, and a sliding assembly groove is opened on the side of the swing frame.

[0012] In the above-mentioned high-strength backrest driving connecting rod suitable for an electric sofa, a structural block is slidably installed in the sliding assembly groove, and a structural rod is rotatably connected between the structural block and the bottom frame.

[0013] In the above-mentioned high-strength backrest driving connecting rod suitable for electric sofas, the connecting rod assembly includes a pair of swing connecting rods rotatably mounted between the end of the sliding frame and the end of the swing frame. The swing connecting rods are parallel to each other and connected with a synchronous connecting rod.

[0014] In the above-mentioned high-strength backrest driving connecting rod suitable for an electric sofa, the bottom frame, the sliding frame and the swing frame are made of aluminum alloy square tubes.

[0015] In the above-mentioned high-strength backrest driving connecting rod suitable for an electric sofa, a displacement sensor is installed between the bottom frame and the sliding frame, and an angle sensor is installed between the swing frame and the bottom frame.

[0016] Compared with the existing technology, the advantages of the utility model are: the connecting rod assembly and the gear linkage assembly realize the switching of the horizontal and inclined states of the swing frame, and it is integrated between the sliding frame and the swing frame without affecting the overall footprint of the electric sofa; an electric push rod is used to provide driving force, which has a high response rate and cooperates with the sensor to ensure the backrest adjustment accuracy; the connecting rod assembly drives the swing frame to swing while having a high supporting stability, ensuring the overall structural strength of the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a structural schematic diagram of another perspective of the utility model;

[0019] Figure 3 It is a structural schematic diagram of another perspective of the utility model;

[0020] In the figure, a bottom frame 1, a fixing hole 11, a fixing boss 12, a support frame 13, an electric push rod 2, a sliding frame 3, a sliding guide rail 31, an electromagnet 32, a locking block 33, an elastic reset member 34, a locking strip 35, a locking tooth 36, a swing frame 4, an assembly hole 41, an assembly table 42, a sliding assembly groove 44, a structural block 45, a structural rod 46, a connecting rod assembly 5, a swing connecting rod 51, a synchronous connecting rod 52, a gear linkage assembly 6, a linkage rack 61, a speed change gear set 62, and a swing gear plate 63. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] like Figure 1-3 As shown, a high-strength backrest driving connecting rod suitable for an electric sofa comprises a horizontally arranged bottom frame 1, on which an electric push rod 2 is installed to provide a driving torque, the electric push rod 2 is arranged horizontally and a sliding frame 3 slidably installed on the bottom frame 1 is connected at the telescopic end, a swing frame 4 is swingably installed above the bottom frame 1, and a connecting rod assembly 5 and a gear linkage assembly 6 are transmission-connected between the sliding frame 3 and the swing frame 4. When the sliding frame 3 slides relative to the bottom frame 1, the gear linkage assembly 6 meshes and drives the swing frame 4 to flip, and at the same time, the connecting rod assembly 5 provides another swing driving torque for the swing frame 4, and at the same time, the connecting rod assembly 5 has a good supporting and fixing effect on the swing frame 4 in a static state.

[0023] Specifically, a fixing boss 12 with a fixing hole 11 is provided at the edge of the bottom frame 1, and the fixing boss 12 passes through. A vertically arranged support frame 13 is provided on both sides of the bottom frame 1, and the support frame 13 is welded and fixed to the bottom frame 1, and the swing frame 4 is hinged to the top of the support frame 13.

[0024] In order to provide sufficient swing driving torque, the gear linkage assembly 6 includes linkage racks 61 arranged on both sides of the sliding frame 3, a speed change gear set 62 meshing with the linkage rack 61 is rotatably installed inside the support frame 13, and a swinging toothed disc 63 meshing with the speed change gear set 62 is installed at the lower end of the swinging frame 4. The speed change gear set 62 speed transmission realizes the horizontal and tilt switching of the swinging toothed disc 63 and the swinging frame 4, and at the same time, because the swinging toothed disc 63 is a low-speed and high-torque transmission, the angle of the swinging frame 4 relative to the horizontal plane can be accurately controlled.

[0025] Furthermore, a sliding guide rail 31 is installed between the side of the sliding frame 3 and the side of the bottom frame 1. The sliding guide rail 31 ensures the movement lubrication of the sliding frame 3 on the one hand, and prevents the sliding frame 3 from being separated from the bottom frame 1 on the other hand. A locking assembly is installed between the sliding frame 3 and the bottom frame 1. When the electric push rod 2 stops driving, the locking assembly locks the sliding frame 3 and the bottom frame 1 accordingly.

[0026] Furthermore, the locking assembly includes an electromagnet 32 ​​installed in the bottom frame 1, the telescopic end of the electromagnet 32 ​​is connected to a locking block 33 and an elastic reset member 34, a locking strip 35 is installed at the lower end of the sliding frame 3, and mutually meshing locking teeth 36 are arranged between the locking strip 35 and the locking block 33. In the normal static state, the elastic reset member 34 provides a pressing force to ensure that the locking teeth 36 are meshed. When the electric push rod 2 is started, the electromagnet 32 ​​is also started, so that the locking strip 35 and the locking block 33 are separated from each other.

[0027] In addition, an assembly platform 42 with an assembly hole 41 is provided at the upper end of the swing frame 4 , and the assembly platform 42 is used to install the sofa backrest assembly. A sliding assembly groove 44 is opened on the side of the swing frame 4 .

[0028] At the same time, in order to further improve the support stability of the swing frame 4, a structural block 45 is slidably installed in the sliding assembly groove 44, and a structural rod 46 is rotatably connected between the structural block 45 and the bottom frame 1. The structural block 45 at the end of the structural rod 46 can move in the sliding assembly groove 44 during the swinging process, and the structural rod 46 provides additional support for the middle part of the structural rod 46.

[0029] It can be seen that the connecting rod assembly 5 includes a pair of swing connecting rods 51 rotatably mounted between the ends of the sliding frame 3 and the swing frame 4. The swing connecting rods 51 are parallel to each other and connected with a synchronous connecting rod 52. When the sliding frame 3 moves, the angle between the swing connecting rod 51 and the sliding frame 3 and the swing frame 4 is adjusted accordingly, and the synchronous connecting rod 52 between them maintains the symmetry of the swing connecting rod 51 during the swinging process.

[0030] Obviously, the bottom frame 1, the sliding frame 3 and the swing frame 4 are made of aluminum alloy square tubes, which can be slotted and expanded according to actual needs, and the assembly method can be adjusted according to the specifications of the sofa.

[0031] Preferably, in order to ensure the driving adjustment accuracy, a displacement sensor is installed between the bottom frame 1 and the sliding frame 3, and an angle sensor is installed between the swing frame 4 and the bottom frame 1. Multiple sensors cooperate with the electric push rod 2 to realize multi-level feedback adjustment.

[0032] To sum up, the principle of this embodiment is that the electric push rod 2 on the bottom frame 1 provides a driving torque to drive the sliding frame 3 to slide horizontally. During the movement, the sliding frame 3 converts the driving torque into a swinging torque of the swinging frame 4 through the connecting rod assembly 5 and the gear linkage assembly 6. The connecting rod assembly 5 and the gear linkage assembly 6 are integrated between the sliding frame 3 and the swinging frame 4, and there is no need to add additional supporting structures.

[0033] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0034] Although the present invention uses more terms such as bottom frame 1, fixing hole 11, fixing boss 12, support frame 13, electric push rod 2, sliding frame 3, sliding guide rail 31, electromagnet 32, locking block 33, elastic reset member 34, locking strip 35, locking tooth 36, swing frame 4, assembly hole 41, assembly platform 42, sliding assembly groove 44, structural block 45, structural rod 46, connecting rod assembly 5, swing connecting rod 51, synchronous connecting rod 52, gear linkage assembly 6, linkage rack 61, speed change gear set 62, swinging gear plate 63, etc., it does not exclude the possibility of using other terms. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A high-strength backrest driving connecting rod suitable for an electric sofa, comprising a bottom frame (1), an electric push rod (2) being mounted on the bottom frame (1), characterized in that: The telescopic end of the electric push rod (2) is connected to a sliding frame (3) slidably mounted on the bottom frame (1); a swing frame (4) is swingably mounted above the bottom frame (1); and a connecting rod assembly (5) and a gear linkage assembly (6) are transmission-connected between the sliding frame (3) and the swing frame (4).

2. The high-strength backrest driving connecting rod suitable for an electric sofa according to claim 1, characterized in that: A fixing boss (12) with a fixing hole (11) is arranged at the edge of the bottom frame (1), vertically arranged support frames (13) are arranged on both sides of the bottom frame (1), and the swing frame (4) is hinged to the top of the support frame (13).

3. The high-strength backrest driving connecting rod suitable for an electric sofa according to claim 2, characterized in that: The gear linkage assembly (6) comprises linkage racks (61) arranged on both sides of the sliding frame (3); a speed change gear set (62) meshing with the linkage racks (61) is rotatably mounted inside the support frame (13); and a swinging gear plate (63) meshing with the speed change gear set (62) is mounted at the lower end of the swinging frame (4).

4. The high-strength backrest driving connecting rod suitable for an electric sofa according to claim 1, characterized in that: A sliding guide rail (31) is installed between the side of the sliding frame (3) and the side of the bottom frame (1), and a locking component is installed between the sliding frame (3) and the bottom frame (1).

5. The high-strength backrest driving connecting rod suitable for an electric sofa according to claim 4, characterized in that: The locking assembly comprises an electromagnet (32) installed in the bottom frame (1), the telescopic end of the electromagnet (32) is connected to a locking block (33) and an elastic reset member (34), the lower end of the sliding frame (3) is installed with a locking strip (35), and mutually meshing locking teeth (36) are arranged between the locking strip (35) and the locking block (33).

6. The high-strength backrest driving connecting rod suitable for an electric sofa according to claim 1, characterized in that: The upper end of the swing frame (4) is provided with an assembly platform (42) with an assembly hole (41), and the side surface of the swing frame (4) is provided with a sliding assembly groove (44).

7. The high-strength backrest driving connecting rod suitable for an electric sofa according to claim 6, characterized in that: A structural block (45) is slidably mounted in the sliding assembly groove (44), and a structural rod (46) is rotatably connected between the structural block (45) and the bottom frame (1).

8. The high-strength backrest driving connecting rod suitable for an electric sofa according to claim 1, characterized in that: The connecting rod assembly (5) comprises a pair of swing connecting rods (51) rotatably mounted between the end of the sliding frame (3) and the end of the swing frame (4); the swing connecting rods (51) are parallel to each other and are connected with a synchronous connecting rod (52) therebetween.

9. The high-strength backrest driving connecting rod suitable for an electric sofa according to claim 1, characterized in that: The bottom frame (1), the sliding frame (3) and the swing frame (4) are made of aluminum alloy square tubes.

10. The high-strength backrest driving connecting rod suitable for an electric sofa according to claim 1, characterized in that: A displacement sensor is installed between the bottom frame (1) and the sliding frame (3), and an angle sensor is installed between the swing frame (4) and the bottom frame (1).

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