Hinge for connecting chair back and cushion of electric sofa

Abstract

The utility model provides a hinge for connecting a chair back and a cushion of an electric sofa, and belongs to the field of hinges. The chair comprises a chair back plate connected with a chair back and a seat cushion plate connected with a seat cushion, the chair back plate is rotatably connected with the seat cushion plate, a rotating shaft is rotatably arranged on the seat cushion plate and fixedly connected with the chair back plate, a first driving plate connected with a first rotating power source is further fixedly connected to the rotating shaft, and a second driving plate connected with a second rotating power source is further fixedly connected to the seat cushion plate. A rotating arc groove is further formed in the cushion plate, the end, not connected with the first rotating power source, of the first driving plate extends through the rotating shaft and extends to the rotating arc groove, a sliding shaft is arranged at the end, close to the rotating arc groove, of the first driving plate, and the sliding shaft penetrates into the rotating arc groove and is in sliding connection with the rotating arc groove. The circle center of the rotating arc groove is located on the center line of the rotating shaft.

Description

Technical Field

[0001] The utility model belongs to the field of hinges, in particular to a hinge used for connecting an electric sofa chair back and a seat cushion. Background Art

[0002] A sofa is a multi-seat chair with upholstered cushions, typically incorporating springs or thick foam to increase elasticity and comfort. Currently, sofas on the market typically have fixed backrests that are difficult to adjust, reducing their functionality. Sofas are limited in function, providing only a comfortable environment for users to sit back and lean against. This requires maintaining a proper sitting posture, but offers no relief from fatigue or stress. More people choose to lie down in bed rather than enjoy family life on the sofa. Furthermore, dust builds up on the bottom of the sofa after prolonged use, making it difficult to clean.

[0003] For example, a Chinese patent document discloses an electric multi-seat sofa [patent application number: CN202322915169.7], which includes a multi-seat sofa with four height-adjustable floating legs fixed by bolts at the four corners of the lower end surface of the multi-seat sofa. Two symmetrical scissor-type lifting platforms are also provided on the lower end surface of the multi-seat sofa. The scissor-type lifting platforms include a lower support plate and an upper support plate fixed to the lower end surface of the multi-seat sofa, and a hinged four-bar mechanism hinged between the lower support plate and the upper support plate, and a long screw rod is provided through the hinged four-bar mechanism. The utility model turns off the electromagnet sleeve through an electric control switch, and then starts the motor that drives the scissor-type lifting platform. The torque of the motor drives the long screw rod to rotate through the meshing of the bevel gears, thereby deforming the hinged four-bar mechanism, thereby raising and lowering the multi-seat sofa. After adjustment, the electromagnet sleeve is restored to electromagnetic force through the electric control switch, thereby magnetically attracting the armature. Utility Model Content

[0004] The purpose of this utility model is to solve the above problems and provide a hinge for connecting the backrest and seat cushion of an electric sofa.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A hinge for connecting the backrest and seat cushion of an electric sofa chair, comprising a backrest plate connected to the backrest and a seat cushion plate connected to the seat cushion, the backrest plate and the seat cushion plate being rotatably connected, a rotating shaft being rotatably provided on the seat cushion plate, the rotating shaft being fixedly connected to the backrest plate, and a first drive plate connected to a first rotating power source being fixedly connected to the rotating shaft, a rotating arc groove being further provided on the seat cushion plate, the end of the first drive plate not connected to the first rotating power source extending through the rotating shaft and extending to the rotating arc groove, and a sliding shaft being provided at the end of the first drive plate close to the rotating arc groove, the sliding shaft being inserted into the rotating arc groove and slidably connected thereto, and the center of the rotating arc groove being located on the center line of the rotating shaft.

[0007] In the above-mentioned hinge for connecting the backrest and seat cushion of an electric sofa, the rotating shaft passes through and extends over the seat cushion plate, the end of the rotating shaft away from the first drive plate is fixedly connected to the second drive plate, and the second drive plate is connected to the second rotating power source.

[0008] In the above-mentioned hinge for connecting the backrest and seat cushion of an electric sofa, a stop plate is provided at the end of the sliding shaft away from the backrest plate. The stop plate is located on the side of the seat cushion plate away from the first driving plate and slides against the seat cushion plate. The width of the stop plate is greater than the width of the rotating arc groove.

[0009] In the above-mentioned hinge for connecting the backrest and seat cushion of an electric sofa, a buffer shaft is also provided on the seat cushion plate, and a spring is provided at the end of the buffer shaft away from the seat cushion plate. The spring can be connected to the drive plate or the backrest, and the rotation of the drive plate will stretch the spring.

[0010] In the above-mentioned hinge for connecting the backrest and seat cushion of an electric sofa, a spring connecting shaft is provided on the buffer shaft, and a placement area is recessed in the middle of the spring connecting shaft.

[0011] In the above-mentioned hinge for connecting the backrest and seat cushion of an electric sofa, the spring connecting shaft is rotatably connected to the buffer shaft.

[0012] In the above-mentioned hinge for connecting the backrest and seat cushion of an electric sofa, the spring connecting shaft and the rotating shaft are located on the same horizontal line.

[0013] In the above-mentioned hinge for connecting the backrest and seat cushion of an electric sofa, a fixed connecting plate is provided on the seat cushion plate, the fixed connecting plate is placed vertically to the seat cushion plate, and a fixing hole is provided on the fixed connecting plate.

[0014] In the above-mentioned hinge for connecting the backrest and seat cushion of an electric sofa, a transverse groove is further provided on the fixed connecting plate.

[0015] In the above-mentioned hinge for connecting the backrest and seat cushion of an electric sofa, the seat cushion plate is provided with at least three adjustment slots, and the fixed connecting plate is detachably fixed to the seat cushion plate by two bolts.

[0016] Compared with the existing technology, the advantages of this utility model are:

[0017] 1. The electric adjustment of the sofa backrest angle is achieved by connecting to a rotating power source. The backrest board is rotated by rotating the shaft, thereby rotating closer to or away from the seat cushion board, so that the angle of the sofa backrest can be adjusted. The rotation angle of the backrest board is limited by the rotation arc groove, so that when adjusting the sofa backrest, the backrest will not be too straight or too horizontal.

[0018] 2. The first drive plate and the second drive plate are driven to rotate the shaft simultaneously by two rotating power sources, thereby sharing the required driving force, protecting the power source, extending the service life and reducing the maintenance cost.

[0019] 3. The spring has a buffering effect. The spring is used to buffer the impact force of the instantaneous start-up of the power source, so that the chair back panel rotates more smoothly. In addition, when the power source disappears, the spring can prompt the chair back panel to return to its original position.

[0020] 4. The placement area is used to connect with the spring. The placement area has the function of limiting the spring from leaving the placement area, making the spring more stable during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure;

[0022] Figure 2 yes Figure 1 Schematic top view of

[0023] Figure 3 This is a schematic diagram of the seat cushion.

[0024] In the figure: chair back plate 10, seat cushion plate 11, rotating shaft 12, first drive plate 13, rotating arc groove 14, sliding shaft 15, second drive plate 16, abutment plate 17, buffer shaft 18, spring connecting shaft 19, placement area 20, fixed connecting plate 21, fixing hole 22, transverse groove 23, adjustment groove 24. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0026] The utility model provides a hinge for connecting the backrest and seat cushion of an electric sofa. Figure 1-3As shown, it includes a backrest plate 10 connected to the chair back and a cushion plate 11 connected to the seat cushion, the backrest plate 10 and the cushion plate 11 are rotatably connected, and a rotating shaft 12 is rotatably provided on the cushion plate 11, the rotating shaft 12 is fixedly connected to the backrest plate 10, and the rotating shaft 12 is also fixedly connected to a first driving plate 13 connected to a first rotating power source, and a rotating arc groove 14 is also provided on the cushion plate 11, and the end of the first driving plate 13 not connected to the first rotating power source extends through the rotating shaft 12 and extends to the rotating arc groove 14, and the end of the first driving plate 13 close to the rotating arc groove 14 is provided with a sliding shaft 15, the sliding shaft 15 penetrates into the rotating arc groove 14 and is slidably connected thereto, and the center of the rotating arc groove 14 is located on the center line of the rotating shaft 12.

[0027] In this embodiment, the first driving plate 13 is rotated around the rotating shaft 12 under the operation of the first rotating power source, and the backrest plate 10 is rotated by the rotation of the rotating shaft 12, thereby rotating closer to or away from the seat cushion plate 11, so that the angle of the sofa backrest can be adjusted. The rotation angle of the backrest plate 10 is limited by the restriction of the rotating arc groove 14, and when adjusting the sofa backrest, the backrest will not be too straight or too horizontal.

[0028] The rotating shaft 12 passes through and extends through the cushion plate 11 . The end of the rotating shaft 12 away from the first driving plate 13 is fixedly connected to the second driving plate 16 . The second driving plate 16 is connected to a second rotating power source.

[0029] In this embodiment, two rotating power sources are provided in the sofa. If there is only one power source, the load of the power source is large and the motor is easily damaged and fails. By using two rotating power sources, the first drive plate 13 and the second drive plate 16 drive the rotating shaft 12 to rotate simultaneously, sharing the required driving force, protecting the power source, extending the service life and reducing the maintenance cost.

[0030] The end of the sliding shaft 15 away from the seat back plate 10 is provided with a stop plate 17, which is located on the side of the seat cushion plate 11 away from the first drive plate 13 and slides against the seat cushion plate 11. The width of the stop plate 17 is greater than the width of the rotating arc groove 14.

[0031] In this embodiment, the abutment plate 17 prevents the rotating shaft 12 from being disconnected from the rotating arc slot 14, which helps to reduce the probability of damage to the device.

[0032] The cushion plate 11 is further provided with a buffer shaft 18 , and the end of the buffer shaft 18 away from the cushion plate 11 is provided with a spring, which can be connected to a drive plate or a chair back, and the rotation of the drive plate will stretch the spring.

[0033] In this embodiment, the spring has a buffering effect, and the spring is used to buffer the impact force of the instantaneous activation of the power source, thereby making the chair back plate 10 rotate more smoothly. In addition, when the power source disappears, the spring can prompt the chair back plate 10 to return to its original position.

[0034] The buffer shaft 18 is provided with a spring connecting shaft 19 , and a placement area 20 is recessed in the middle of the spring connecting shaft 19 .

[0035] In this embodiment, the placement area 20 is used to connect with the spring. The placement area 20 has the function of limiting the spring from leaving the placement area 20, so that the spring is more stable during operation.

[0036] The spring connecting shaft 19 is rotatably connected to the buffer shaft 18 .

[0037] In this embodiment, the spring rotates during operation. The rotation of the spring connecting shaft 19 can reduce the wear between the spring and the spring connecting shaft 19.

[0038] The spring connecting shaft 19 and the rotating shaft 12 are located on the same horizontal line.

[0039] The cushion plate 11 is provided with a fixed connecting plate 21 , which is placed perpendicular to the cushion plate 11 , and has a fixing hole 22 .

[0040] In this embodiment, the seat cushion plate 11 is fixed to the seat plate of the sofa through the fixing holes 22 on the fixing connecting plate 21 .

[0041] The fixed connecting plate 21 is further provided with a transverse groove 23 .

[0042] In this embodiment, the transverse groove 23 is also used for fixing, and the fixing position can be adjusted according to the fixing position on the sofa seat.

[0043] The cushion plate 11 is provided with at least three adjustment slots 24 . The fixed connecting plate 21 is detachably fixed to the cushion plate 11 by two bolts.

[0044] In this embodiment, the fixed positions of the seat cushion plate 11 and the fixed connecting plate 21 can be adjusted according to the actual sofa structure and the hinge position.

[0045] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0046] Although this article uses the chair backboard 10, seat cushion board 11, rotating shaft 12, first drive plate 13, rotating arc groove 14, sliding shaft 15, second drive plate 16, abutment plate 17, buffer shaft 18, spring connecting shaft 19, placement area 20, fixed connecting plate 21, fixing hole 22, transverse groove 23, adjustment groove 24, etc. more frequently, these terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A hinge for connecting an electric sofa back and a seat cushion, comprising a backrest plate (10) connected to the backrest and a cushion plate (11) connected to the seat cushion, wherein the backrest plate (10) and the cushion plate (11) are rotatably connected, and characterized in that: The seat cushion plate (11) is rotatably provided with a rotating shaft (12), the rotating shaft (12) is fixedly connected to the chair back plate (10), and the rotating shaft (12) is also fixedly connected to a first drive plate (13) connected to a first rotating power source, and the seat cushion plate (11) is also provided with a rotating arc groove (14), the end of the first drive plate (13) not connected to the first rotating power source extends through the rotating shaft (12) and extends to the rotating arc groove (14), and the end of the first drive plate (13) close to the rotating arc groove (14) is provided with a sliding shaft (15), the sliding shaft (15) penetrates into the rotating arc groove (14) and is slidably connected thereto, and the center of the rotating arc groove (14) is located on the center line of the rotating shaft (12).

2. The hinge for connecting the backrest and seat cushion of an electric sofa according to claim 1, characterized in that: The rotating shaft (12) passes through and extends through the cushion plate (11), and the end of the rotating shaft (12) away from the first driving plate (13) is fixedly connected to the second driving plate (16), and the second driving plate (16) is connected to the second rotating power source.

3. The hinge for connecting the backrest and seat cushion of an electric sofa according to claim 1, characterized in that: The end of the sliding shaft (15) away from the chair back plate (10) is provided with a stop plate (17), and the stop plate (17) is located on the side of the seat cushion plate (11) away from the first drive plate (13) and slides against the seat cushion plate (11), and the width of the stop plate (17) is greater than the width of the rotating arc groove (14).

4. The hinge for connecting the backrest and seat cushion of an electric sofa according to claim 1, characterized in that: The cushion plate (11) is also provided with a buffer shaft (18), and the end of the buffer shaft (18) away from the cushion plate (11) is provided with a spring, and the spring can be connected to the drive plate or the chair back, and the rotation of the drive plate will stretch the spring.

5. The hinge for connecting the backrest and seat cushion of an electric sofa according to claim 4, characterized in that: The buffer shaft (18) is provided with a spring connecting shaft (19), and a placement area (20) is recessed in the middle of the spring connecting shaft (19).

6. The hinge for connecting the backrest and seat cushion of an electric sofa according to claim 5, characterized in that: The spring connecting shaft (19) is rotationally connected to the buffer shaft (18).

7. The hinge for connecting the backrest and seat cushion of an electric sofa according to claim 5, characterized in that: The spring connecting shaft (19) and the rotating shaft (12) are located on the same horizontal line.

8. The hinge for connecting the backrest and seat cushion of an electric sofa according to claim 1, characterized in that: The cushion plate (11) is provided with a fixed connecting plate (21), the fixed connecting plate (21) and the cushion plate (11) are placed vertically, and the fixed connecting plate (21) is provided with a fixing hole (22).

9. The hinge for connecting the backrest and seat cushion of an electric sofa according to claim 8, characterized in that: The fixed connecting plate (21) is also provided with a transverse groove (23).

10. The hinge for connecting the backrest and seat cushion of an electric sofa according to claim 8, characterized in that: The cushion plate (11) is provided with at least three adjustment slots (24). The fixed connecting plate (21) is detachably fixed to the cushion plate (11) by two bolts.

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