Seat with backrest

Abstract

The utility model relates to the technical field of seats, and discloses a seat with a backrest, which comprises a seat cushion, armrests are fixedly connected to two sides of the upper surface of the seat cushion, the backrest is arranged at the rear end of the upper surface of the seat cushion, a connecting plate is fixedly connected to the middle of the lower surface of the backrest, a storage groove is arranged at the rear end of the upper surface of the seat cushion, and the backrest is arranged in the storage groove. And the lower end of the connecting plate penetrates through the storage groove to the interior of the storage groove. When the seat is used, the plc control panel is electrically connected with the servo motor, a switch and the rotating direction of the seat can be conveniently controlled, the servo motor is started to rotate forwards, so that the rotating rod and the transmission wheel are driven to rotate, and the two rotating columns and the backrest are driven to integrally move towards the right side through mutual meshing of the teeth and the rack; on the contrary, the user can adjust the angle of the backrest according to the height and the body shape of the user so as to obtain better support and comfort.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a seat with a backrest. Background Art

[0002] As we all know, the backrest of a seat refers to the supporting part at the back of the seat, which is used to provide back support and comfort. The backrest is usually composed of a solid frame and filling materials. The frame can be made of metal or plastic and fixed to the seat through connectors. The filling material can be sponge, cotton, springs, etc., which are used to provide a soft feeling and relieve back pressure. The design of the backrest should conform to ergonomic principles, taking into account the back curve and comfort, to ensure that the user gets good support and relaxation when sitting for a long time.

[0003] Usually, due to different heights and body shapes of people, different backrest angles are required to provide the best support and comfort. However, traditional seat backs use fixed angles, which cannot meet the needs of different groups of people. Therefore, technical improvements are urgently needed. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, and to propose a seat with a backrest. When the seat is in use, it is electrically connected to a servo motor through a PLC control panel, so as to control its switch and rotation direction. By starting the servo motor to rotate forward, the rotating rod and the transmission wheel are driven to rotate, and the teeth and the rack are engaged with each other, so as to drive the two rotating columns and the backrest as a whole to move toward the right side, and vice versa when reversed, it moves to the left side. The user can adjust the angle of the backrest according to his or her height and body shape to obtain better support and comfort.

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

[0006] The cam is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, and the camshafts are connected to the plurality of camshafts respectively.

[0007] Through the above technical solution, compared with the existing seats, when this seat is used, the seat cushion adopts a wooden structure, which can improve the overall supporting force. The back cushion and headrest are made of soft sponge material, which has soft and comfortable characteristics, and can provide good cushioning and supporting force, thereby improving the user's overall riding experience and having high practical performance.

[0008] Furthermore, the side of the rotating rod away from the servo motor is rotatably connected to the inner wall of the storage tank;

[0009] Through the above technical solution, the rotating rod can be easily rotated through the rotating connection.

[0010] Further, the teeth and the rack are meshed with each other;

[0011] Through the above technical solution, the teeth and the rack mesh with each other, thereby driving the transmission wheels on both sides of the rear end to rotate together.

[0012] Furthermore, both sides of the upper surface of the backrest are fixedly connected with support rods, and the upper ends of the support rods are fixedly connected with headrests;

[0013] Through the above technical solution, the user's riding comfort is improved by using soft sponge in the headrest.

[0014] Furthermore, a backrest is fixedly connected to the outer wall of the front end of the backrest;

[0015] Through the technical solution, good cushioning and supporting force can be provided through the back cushion.

[0016] Furthermore, a PLC control panel is provided at the front end of the upper surface of the handrail on one side;

[0017] Through the above technical solution, the PLC control panel is electrically connected to the servo motor to control its switch and rotation direction, thereby indirectly changing the overall angle of the backrest.

[0018] The utility model has the following beneficial effects:

[0019] 1. The utility model proposes a seat with a backrest. Compared with the existing seats, when the seat is in use, it is electrically connected to the servo motor through the PLC control panel, so as to control its switch and rotation direction. By starting the servo motor to rotate forward, the rotating rod and the transmission wheel are driven to rotate. The teeth and the rack are engaged with each other, so as to drive the two rotating columns and the backrest as a whole to move toward the right side, and vice versa when reversed, it moves to the left side. The user can adjust the angle of the backrest according to his or her height and body shape to obtain better support and comfort.

[0020] 2. The utility model proposes a seat with a backrest. Compared with the existing seats, when the seat is in use, the seat cushion adopts a wooden structure, which can improve the overall supporting force. The back cushion and headrest are made of soft sponge material, which has soft and comfortable characteristics and can provide good cushioning and supporting force, thereby improving the user's overall riding experience and having high practical performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an axonometric diagram of a seat with a backrest proposed by the utility model;

[0022] Figure 2 A side sectional view of a seat with a backrest proposed by the utility model;

[0023] Figure 3 A top cross-sectional view of a seat with a backrest proposed by the utility model;

[0024] Figure 4 This is an exploded schematic diagram of a seat with a backrest proposed by the utility model;

[0025] Figure 5 for Figure 3 Enlarged view of point A in the middle.

[0026] 1. Seat cushion; 2. Armrest; 3. PLC control panel; 4. Storage slot; 5. Backrest; 6. Backrest; 7. Connecting plate; 8. Rotating column; 9. Support rod; 10. Headrest; 11. Mounting slot; 12. Servo motor; 13. Rotating rod; 14. Transmission wheel; 15. Teeth; 16. Rack. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Reference Figure 1-5The utility model provides an embodiment: a chair with a backrest, comprising a cushion 1, armrests 2 are fixedly connected to both sides of the upper surface of the cushion 1, a backrest 5 is arranged at the rear end of the upper surface of the cushion 1, a connecting plate 7 is fixedly connected to the middle part of the lower surface of the backrest 5, a storage slot 4 is provided at the rear end of the upper surface of the cushion 1, the lower end of the connecting plate 7 passes through the storage slot 4 to the inside of the storage slot 4, rotating columns 8 are fixedly connected to both sides of the outer wall of the connecting plate 7, the outer wall of the rotating column 8 away from the connecting plate 7 is rotatably connected to the inner wall of the storage slot 4, a mounting groove 11 is provided at the front end of the inner wall of one side of the storage slot 4, a servo motor 12 is fixedly connected to the middle part of the inner wall of one side of the mounting groove 11, a rotating rod 13 is fixedly connected to the output end of the servo motor 12, both sides of the rotating rod 13 and the outer walls of the two rotating columns 8 are sleeved with transmission wheels 14, the outer wall of the transmission wheel 14 is fixedly connected with a plurality of teeth 15, and the outer wall of the teeth 15 is sleeved with a rack 16.

[0029] Through the above technical solution, compared with the existing seats, when this seat is used, the seat cushion adopts a wooden structure, which can improve the overall supporting force. The back cushion and headrest are made of soft sponge material, which has soft and comfortable characteristics, and can provide good cushioning and supporting force, thereby improving the user's overall riding experience and having high practical performance.

[0030] Further, the side of the rotating rod 13 away from the servo motor 12 is rotatably connected to the inner wall of the storage slot 4. Through the above technical solution, the rotating rod is conveniently rotated through the rotational connection. Further, the teeth 15 and the rack 16 are meshed with each other. Through the above technical solution, the teeth 15 and the rack 16 are meshed with each other, thereby driving the transmission wheels on both sides of the rear end to rotate together. Further, both sides of the upper surface of the backrest 5 are fixedly connected with support rods 9, and the upper ends of the support rods 9 are fixedly connected with headrests 10. Through the above technical solution, the headrest adopts soft sponge to improve the user's riding feeling. Further, the outer wall of the front end of the backrest 5 is fixedly connected with a cushion back 6. Through the above technical solution, the cushion back can provide good buffering and supporting force. Further, the front end of the upper surface of the armrest 2 on one side is provided with a plc control panel 3. Through the above technical solution, the plc control panel is electrically connected to the servo motor to control its switch and rotation direction, thereby indirectly changing the overall angle of the backrest.

[0031] Working principle: When in use, the user sits on the seat cushion 1, and the PLC control panel 3 is electrically connected to the servo motor 12 to control its switch and rotation direction. By starting the servo motor 12 to rotate forward, the rotating rod 13 and the transmission wheel 14 are driven to rotate, and the teeth 15 and the rack 16 are engaged with each other, thereby driving the two rotating columns 8 and the backrest 5 to move to the right as a whole, and vice versa when reversed, they move to the left. The user can adjust the angle of the backrest 5 according to his or her height and body shape to obtain better support and comfort.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A chair with a backrest, comprising a seat cushion (1), characterized in that: The upper surface of the seat cushion (1) is fixedly connected to armrests (2) on both sides, the upper surface of the seat cushion (1) is provided with a backrest (5) at the rear end, the middle part of the lower surface of the backrest (5) is fixedly connected to a connecting plate (7), the upper surface of the seat cushion (1) is provided with a storage groove (4) at the rear end, the lower end of the connecting plate (7) passes through the storage groove (4) to the inside of the storage groove (4), the outer wall of the connecting plate (7) is fixedly connected to rotating columns (8) on both sides, and the outer wall of the rotating column (8) away from the connecting plate (7) is connected to the storage groove. The storage slot (4) is rotatably connected to the inner wall of one side of the storage slot (4); a mounting slot (11) is provided at the front end of the inner wall of one side of the mounting slot (11); a servo motor (12) is fixedly connected to the middle of the inner wall of one side of the mounting slot (11); a rotating rod (13) is fixedly connected to the output end of the servo motor (12); both sides of the rotating rod (13) and the outer walls of the two rotating columns (8) are sleeved with transmission wheels (14); the outer walls of the transmission wheels (14) are fixedly connected with a plurality of teeth (15); and the outer walls of the teeth (15) are sleeved with racks (16).

2. A chair with a backrest according to claim 1, characterized in that: The side of the rotating rod (13) away from the servo motor (12) is rotatably connected to the inner wall of the storage groove (4).

3. A chair with a backrest according to claim 1, characterized in that: The teeth (15) and the rack (16) mesh with each other.

4. A chair with a backrest according to claim 1, characterized in that: Support rods (9) are fixedly connected to both sides of the upper surface of the backrest (5), and a headrest (10) is fixedly connected to the upper end of the support rod (9).

5. A chair with a backrest according to claim 1, characterized in that: The outer wall at the front end of the backrest (5) is fixedly connected with a backrest (6).

6. A chair with a backrest according to claim 1, characterized in that: A PLC control panel (3) is provided at the front end of the upper surface of the handrail (2) on one side.

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