Split type backrest assembly and seat

Abstract

The utility model relates to a seat, in particular to a split type backrest assembly and a seat. Comprising a chair back, an outer frame, armrests, a cushion, a base, a controller, a motor, a rotating shaft, a first gear and a second gear, the armrests are symmetrically arranged on the left side and the right side of the top end of the cushion, the controller is arranged at the right end of the armrest on the right side, the cushion is arranged in the middle of the top end of the base, the motor is arranged on the rear side of the right end of the cushion, and a notch is formed in the rear end of the cushion; and an output shaft of the motor is connected with the right end of the rotating shaft, an outer frame is rotationally connected in the notch, a chair back is arranged in the outer frame, and second gears are symmetrically arranged on the lower portions of the left side and the right side of the outer frame. According to the utility model, a proper groove is selected on the spinous process plate, the lumbar vertebra plate is inserted into the groove, and the spinous process plate and the lumbar vertebra plate are matched for use, so that different degrees of waist support can be obtained, and each user can be ensured to obtain the most suitable support.

Description

Technical Field

[0001] This utility model relates to a seat, and more particularly to a split-type backrest assembly and seat. Background Technology

[0002] With the fast pace of modern life and changing work styles, it's becoming increasingly common for people to sit for extended periods in offices, homes, or other environments. Maintaining poor posture for long periods can easily lead to lower back pain, cervical spine problems, and other health risks. To address these issues, the market demand for chairs that provide good support and comfort is growing.

[0003] Traditional chair designs often lack sufficient flexibility to meet the individual needs of different users, especially in terms of lumbar support. Furthermore, most traditional chairs use a fixed structure, making it difficult to adjust to the user's physical condition and usage habits, which limits the application of ergonomic principles. Utility Model Content

[0004] In order to overcome the shortcomings of traditional seat designs, which often lack sufficient flexibility and cannot meet the personalized needs of different users, especially in terms of lumbar support, the purpose of this utility model is to provide a split backrest assembly and seat.

[0005] The technical solution of this utility model is as follows: a split-type backrest assembly and seat, including a backrest, an outer frame, armrests, a seat cushion, a base, a controller, a motor, a rotating shaft, a first gear, a second gear, a ratchet plate, and a lumbar slab. The seat cushion is located at the top center of the base. Armrests are symmetrically arranged on the left and right sides of the top of the seat cushion. The controller is located at the right end of the right armrest. The motor is located at the rear right end of the seat cushion and is electrically connected to the controller. A notch is located at the rear of the seat cushion, and a rotating shaft is rotatably connected within the notch. A first gear is symmetrically arranged on the left and right sides of the rotating shaft. The output shaft of the motor is connected to the right end of the rotating shaft. The outer frame is rotatably connected within the notch. The backrest is located within the outer frame. Second gears are symmetrically arranged at the lower left and right sides of the outer frame. The second gears on both sides are located at the connection between the outer frame and the seat cushion. The first gears on the left and right sides mesh with the second gears on the left and right sides, respectively. A lumbar slab is located at the lower part of the backrest near the seat cushion, and a ratchet plate is located at the upper part of the backrest near the seat cushion.

[0006] Furthermore, it also includes an adjustable headrest, which is located at the end of the outer frame away from the seat cushion.

[0007] Furthermore, it also includes a support rod, which is rotatably connected to the rear end of the outer frame.

[0008] Furthermore, it also includes a foot pad and a pull plate. The front end of the seat cushion has a rectangular hole, and the foot pad is slidably connected inside the rectangular hole. The top front side of the foot pad is equipped with a pull plate.

[0009] Furthermore, it also includes guide rails and slides. Guide rails are symmetrically arranged at both ends of the foot pad, and slides are symmetrically arranged on both sides of the rectangular hole. The guide rails and slides are slidably connected.

[0010] Furthermore, the lumbar lamina is made of flexible material, and there are grooves spaced apart on the spinous process plate, so that the lumbar lamina can be locked in the grooves of the spinous process plate.

[0011] The beneficial effects are as follows: 1. Users can control the start and stop of the motor through the controller, thereby adjusting the angle of the chair back. By selecting a suitable groove on the spinous process plate and inserting the lumbar lamina into the groove, the combined use of the spinous process plate and the lumbar lamina can provide different levels of lumbar support, ensuring that each user can obtain the most suitable support for themselves.

[0012] 2. The adjustable headrest allows users to adjust the height or angle of the neck support according to their individual needs, further enhancing comfort. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective.

[0015] Figure 3 This is a three-dimensional structural diagram of the seat cushion and backrest components of this utility model.

[0016] Figure 4 This is a three-dimensional structural diagram of the shaft, motor, and other components of this utility model.

[0017] Figure 5 This is a three-dimensional structural diagram of the lumbar lamina and spinous process plate of this utility model.

[0018] Component names and numbers in the diagram: 1_Adjustable headrest, 2_Backrest, 3_Outer frame, 4_Armrest, 5_Seat cushion, 501_Rectangular hole, 502_Notch, 6_Base, 7_Controller, 8_Support rod, 9_Motor, 10_Spindle, 11_Gear No. 1, 12_Gear No. 2, 14_Guide rail, 1401_Slide rail, 15_Foot pad, 16_Pull plate, 17_Spine plate, 18_Lumbar plate. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0020] A split-type backrest assembly and seat, such as Figures 1-5As shown, the chair includes an adjustable headrest 1, a backrest 2, an outer frame 3, armrests 4, a seat cushion 5, a base 6, a controller 7, a support rod 8, a motor 9, a rotating shaft 10, a first gear 11, a second gear 12, a spindle plate 17, and a lumbar lamina 18. The seat cushion 5 is located at the top center of the base 6. Armrests 4 are symmetrically arranged on the left and right sides of the top of the seat cushion 5. The controller 7 is located at the right end of the right armrest 4. The motor 9 is located at the rear right end of the seat cushion 5, and the motor 9 is electrically connected to the controller 7. A notch 502 is located at the rear end of the seat cushion 5, within which a rotating connection... A rotating shaft 10 is connected, with gears 11 symmetrically arranged on both sides of the rotating shaft 10. The output shaft of the motor 9 is connected to the right end of the rotating shaft 10. An outer frame 3 is rotatably connected within a notch 502. A backrest 2 is located inside the outer frame 3, which provides some protection for the backrest 2. An adjustable headrest 1 is located at the end of the outer frame 3 away from the seat cushion 5. Users can manually adjust the height or angle of the adjustable headrest 1 according to their personal needs to obtain the best neck support. A support rod 8 is rotatably connected to the rear end of the outer frame 3. The left and right sides of the outer frame 3 are lower... The second gear 12 is symmetrically arranged on both sides, with the second gear 12 on both sides located at the connection between the outer frame 3 and the seat cushion 5. The first gear 11 on the left and right sides meshes with the second gear 12 on the left and right sides respectively. When the motor 9 starts, the motor 9 drives the rotating shaft 10 to rotate, which in turn drives the first gear 11 to rotate. The first gear 11 meshes with the second gear 12, and the first gear 11 drives the second gear 12 to rotate. The second gear 12 is fixed on the outer frame 3. Therefore, as the second gear 12 rotates, the backrest 2 also changes angle accordingly. A lumbar slab 18 is provided at the lower part of one end near the seat cushion 5, and a spinous process plate 17 is provided at the upper part of one end of the backrest 2 near the seat cushion 5. The lumbar slab 18 is made of flexible material, and there are grooves spaced apart on the spinous process plate 17. The lumbar slab 18 can be inserted into the grooves of the spinous process plate 17. When the user leans against the backrest 2, the user can place the lumbar slab 18 in different positions of the grooves on the spinous process plate 17 according to their own physical needs to obtain different degrees of lumbar support. The lumbar slab 18 is made of flexible material and has a certain degree of elasticity, which can improve the user's comfort when using it.

[0021] like Figure 3 and Figure 4 As shown, it also includes a guide rail 14, a slide rail 1401, a foot pad 15, and a pull plate 16. The front end of the seat cushion 5 has a rectangular hole 501, and the foot pad 15 is slidably connected inside the rectangular hole 501. The top front side of the foot pad 15 is provided with a pull plate 16. The left and right ends of the foot pad 15 are symmetrically provided with guide rails 14, and the left and right sides of the rectangular hole 501 are symmetrically provided with slide rails 1401. The guide rail 14 and the slide rail 1401 are slidably connected. Pulling the pull plate 16 will pull the foot pad 15 out of the rectangular hole 501. During this process, the guide rail 14 slides in the slide rail 1401 and is pulled out together with the foot pad 15. The cooperation between the guide rail 14 and the slide rail 1401 makes it convenient for the user to pull the foot pad 15 out of the rectangular hole 501 and push it into the rectangular hole 501.

[0022] When using this chair, the user can control the start and stop of the motor 9 via the controller 7. When the user operates the controller 7 to change the angle of the backrest 2, the motor 9 starts, driving the rotating shaft 10 to rotate, which in turn drives the first gear 11 to rotate. Since the first gear 11 and the second gear 12 mesh with each other, when the first gear 11 rotates, it drives the second gear 12 to rotate. The second gear 12 is fixed on the outer frame 3, so as the second gear 12 rotates, the angle of the backrest 2 also changes accordingly. In this way, the user can easily adjust the tilt angle of the backrest 2 via the controller 7 to achieve the most comfortable sitting posture. The user can place the lumbar plate 18 on the spinous process plate 17 according to their own physical needs. Different grooves in different positions provide different levels of lumbar support. This design allows for personalized adjustments to ensure that each user can obtain the most suitable lumbar support. The front end of the seat cushion 5 has a rectangular hole 501, and the foot pad 15 is slidably connected in the hole. Pulling the pull plate 16 pulls the foot pad 15 out of the rectangular hole 501. During this process, the guide rail 14 slides in the slide rail 1401. The guide rail 14 is pulled out together with the foot pad 15. The pull plate 16 on the front side of the top of the foot pad 15 makes it easy for the user to operate. When the backrest 2 is in a horizontal state, the support rod 8 can be rotated so that the support rod 8 contacts the ground and is perpendicular to the ground. At this time, the backrest 2 can obtain a certain support and help maintain the stability of the backrest 2.

[0023] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A split-type backrest assembly and seat, comprising a seat cushion (5) and a base (6), wherein the seat cushion (5) is disposed at the center of the top of the base (6), characterized in that, It also includes a backrest (2), an outer frame (3), armrests (4), a controller (7), a motor (9), a rotating shaft (10), a first gear (11), a second gear (12), a spindle plate (17), and a lumbar lamina (18). Armrests (4) are symmetrically arranged on the left and right sides of the top of the seat cushion (5). A controller (7) is located at the right end of the right armrest (4). A motor (9) is located at the rear right end of the seat cushion (5). The motor (9) is electrically connected to the controller (7). A notch (502) is located at the rear of the seat cushion (5). A rotating shaft (10) is rotatably connected inside the notch (502). A first gear (11) is symmetrically arranged on the left and right sides of the rotating shaft (10). The output shaft of the motor (9) is connected to the right end of the rotating shaft (10). The outer frame (3) is rotatably connected in the notch (502). The backrest (2) is provided in the outer frame (3). The second gear (12) is symmetrically arranged on the lower part of the left and right sides of the outer frame (3). The second gear (12) on the left and right sides is located at the connection between the outer frame (3) and the seat cushion (5). The first gear (11) on the left and right sides meshes with the second gear (12) on the left and right sides respectively. The lower part of the backrest (2) near the seat cushion (5) is provided with a lumbar plate (18). The upper part of the backrest (2) near the seat cushion (5) is provided with a spinous plate (17).

2. The split-type backrest assembly and seat according to claim 1, characterized in that, It also includes an adjustable headrest (1), with the adjustable headrest (1) provided at the end of the outer frame (3) away from the seat cushion (5).

3. A split-type backrest assembly and seat according to claim 2, characterized in that, It also includes a support rod (8), and the rear end of the outer frame (3) is rotatably connected to the support rod (8).

4. A split-type backrest assembly and seat according to claim 3, characterized in that, It also includes a foot pad (15) and a pull plate (16). The front end of the seat cushion (5) has a rectangular hole (501), and the foot pad (15) is slidably connected inside the rectangular hole (501). The top front side of the foot pad (15) is provided with a pull plate (16).

5. A split-type backrest assembly and seat according to claim 4, characterized in that, It also includes guide rails (14) and slide rails (1401). Guide rails (14) are symmetrically arranged at the left and right ends of the foot pad (15). Slide rails (1401) are symmetrically arranged on the left and right sides inside the rectangular hole (501). The guide rails (14) and slide rails (1401) are slidably connected.

6. A split-type backrest assembly and seat according to claim 5, characterized in that, The lumbar lamina (18) is made of flexible material, and there are grooves spaced apart on the spinous process plate (17). The lumbar lamina (18) can be locked in the groove of the spinous process plate (17).

Images