Seat with backrest adjusted by worm gear

Abstract

The utility model relates to the technical field of seats, in particular to a seat with a backrest adjusted by a worm gear, which comprises a seat frame, a seat cushion is fixed on the inner side of the seat frame by screws, the inner side of the seat cushion is rotatably connected with a fixing shaft, the backrest is clamped outside the fixing shaft, and a motor for providing power is connected inside the backrest by bolts. The power output end of the motor is in key connection with a worm, one side of the worm is in meshed connection with a worm gear, the worm gear is fixedly connected to the exterior of the fixing shaft in a sleeving mode, a lubricating assembly for lubricating the worm gear is fixed to the inner side of the backrest through screws, and a turbofan for ventilating the backrest is fixed to the interior of the backrest through screws. The outer side of the seat frame is rotationally connected with a button for controlling the motor; by means of the motor, the worm gear, the worm and the lubricating assembly, the problems that when an existing seat with a backrest adjusted through a worm gear is used, friction between the worm gear and the worm cannot be reduced, and the service life of the worm gear and the service life of the worm are short are solved.

Description

Technical Field

[0001] This utility model relates to the field of seat technology, specifically to a seat with a worm gear adjustable backrest. Background Technology

[0002] Seat cushions are removable mats, typically used on seats or sofas, primarily for aesthetic and warmth purposes. Seat cushions are divided into indoor and outdoor types. Indoor cushions are mainly used on sofas and seats, while outdoor cushions are mainly used in vehicles, offering both aesthetic appeal and comfort.

[0003] However, existing worm gear adjustable backrest seats typically use a motor to drive a worm and a worm wheel to rotate, thereby adjusting the seat back. However, when the worm and worm wheel are working, due to the influence of the contact area and relative speed, the worm and worm wheel will generate high temperature and pressure, which will cause wear on the worm and worm wheel and affect their service life. Therefore, a worm gear adjustable backrest seat is designed. Utility Model Content

[0004] The main purpose of this utility model is to provide a seat with a worm gear adjustable backrest. This utility model solves the problem that existing worm gear adjustable backrest seats cannot reduce the friction between the worm gear and the worm during use, and the worm gear and the worm have a short service life, by setting up a motor, worm gear, worm, and lubrication components.

[0005] The technical solution adopted by this utility model to solve its technical problem is a seat with a worm gear adjustable backrest, including a seat frame, a seat cushion fixed to the inner side of the seat frame by screws, and a fixed shaft rotatably connected to the inner side of the seat cushion. A backrest is snapped onto the outside of the fixed shaft. A motor providing power is bolted to the inside of the backrest, and a worm gear is keyed to the power output end of the motor. A worm wheel is meshed with one side of the worm gear and is sleeved and fixed to the outside of the fixed shaft. A lubrication component for lubricating the worm wheel is fixed to the inner side of the backrest by screws. A turbine fan for ventilating the backrest is fixed to the inner side of the backrest by screws. A button for controlling the motor is rotatably connected to the outer side of the seat frame.

[0006] By adopting the above technical solution, when the backrest of the seat cushion needs to be adjusted, the button on the outside of the seat frame is turned, and then the motor inside the backrest converts the received electrical energy into mechanical energy. The motor drives the worm gear to rotate, and then the worm gear drives the external worm wheel to rotate. Then the worm wheel drives the fixed shaft to rotate, and then the fixed shaft drives the external backrest to rotate, thus facilitating the adjustment of the backrest of the seat cushion.

[0007] Specifically, the lubrication assembly includes a fixed box, a fixed tube, a cavity, a fixed block, a connecting block, a cavity, a spring, and a support block. The fixed box is fixed to the inside of the backrest by screws, and the fixed box has a cavity for storing lubricating oil inside. The support block is inserted into the bottom of the fixed box, and the surface of the support block has a cavity for the lubricating oil in the cavity to flow out. The connecting block is symmetrically slidably connected to one side of the fixed box, and a spring is welded to one side of the connecting block to reset the connecting block. The worm gear is clamped to the outside of the fixed block to press the connecting block.

[0008] By adopting the above technical solution, when the worm rotates, it drives the external fixed block to rotate. Then the fixed block contacts the connecting block at the bottom of the fixed box, and the end of the connecting block is in an arc state. The fixed block cannot be in contact with the end of the connecting block for a long time. Then the fixed block retracts into the fixed box. Then the spring on one side of the fixed block is compressed to generate elastic force. Then the fixed block drives the support block to move into the cavity inside the fixed box. Then the cavity opened on the support block enters the cavity opened in the fixed box. Then the lubricating oil in the cavity enters the cavity and drips onto the worm. The worm transfers the lubricating oil to the outside of the worm wheel, which makes it easy to add lubricating oil to the outside of the worm wheel and worm, reduces the friction between the worm wheel and worm, and improves the service life of the worm wheel and worm.

[0009] When the fixing block and the connecting block are separated, the spring inside the fixing box causes the connecting block to pop outward. Then the connecting block causes the support block to move downward, so that the cavity on the support block moves out of the fixing box, which facilitates the sealing treatment of the bottom of the fixing box.

[0010] Bearings are interference-fitted at both ends of the worm gear away from the motor and at both ends of the fixed shaft.

[0011] Specifically, a fixed pipe for conveying lubricating oil is inserted into one side of the fixed box, and a fixed cover for sealing the end of the fixed pipe is rotatably connected to the outside of the backrest.

[0012] By adopting the above technical solution, when adding lubricating oil to the fixed box, pull the fixed cover outside the backrest, and then add lubricating oil into the fixed tube. Subsequently, the lubricating oil enters the fixed box through the fixed tube, thus facilitating the addition of lubricating oil to the fixed box.

[0013] Specifically, a rubber gasket is adhered to the outside of the support block to seal it with the fixing box.

[0014] By adopting the above technical solution, when the support block is reset, the rubber pad on the support block is tightly connected to the inside of the fixing box, thereby improving the sealing between the support block and the fixing box.

[0015] Specifically, the input terminal of the motor is electrically connected to the power supply terminal of an external power source.

[0016] By adopting the above technical solution and connecting to an external power source, the electrical equipment can operate normally.

[0017] The beneficial effects of this utility model are:

[0018] This utility model describes a worm gear adjustable backrest seat. When the worm rotates, it drives the external fixed block to rotate. Subsequently, the fixed block contacts the connecting block at the bottom of the fixed box, and then the fixed block retracts into the fixed box. Then, the spring on one side of the fixed block is compressed to generate elastic force, and the fixed block drives the support block to move into the cavity inside the fixed box. Then, the cavity opened on the support block enters the cavity opened in the fixed box, and the lubricating oil in the cavity enters the cavity. Then, the lubricating oil drips onto the worm, and the worm transfers the lubricating oil to the outside of the worm gear. This facilitates the addition of lubricating oil to the outside of the worm gear and worm, reduces the friction between the worm gear and worm, and improves the service life of the worm gear and worm.

[0019] (1) In the worm gear adjustable backrest seat described in this utility model, when the fixing block and the connecting block are separated, the spring in the fixing box drives the connecting block to pop out, and then the connecting block drives the support block to move downward, so that the cavity on the support block moves out of the fixing box, thereby facilitating the sealing treatment of the bottom of the fixing box. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the overall structure of a seat with a worm gear adjustable backrest according to the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of a seat with a worm gear adjustable backrest according to the present invention;

[0023] Figure 3 This is a schematic diagram of the lubrication assembly structure of a seat with a worm gear adjustable backrest according to the present invention;

[0024] In the diagram: 1. Seat cushion; 2. Seat frame; 3. Backrest; 4. Worm gear; 5. Button; 6. Fixing cover; 7. Motor; 8. Fixing shaft; 9. Lubrication assembly; 10. Worm gear; 11. Turbine fan; 12. Spring; 13. Support block; 14. Connecting block; 15. Fixing block; 16. Fixing tube; 17. Cavity; 18. Rubber pad; 19. Hole; 20. Fixing box. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] In order to adjust the backrest 3 of the seat cushion, as an embodiment of this utility model, such as Figure 1 , Figure 2 and Figure 3 As shown, the present invention discloses a worm gear adjustable backrest seat, comprising a seat frame 2, a seat cushion 1 fixed to the inner side of the seat frame 2 by screws, and a fixed shaft 8 rotatably connected to the inner side of the seat cushion 1. A backrest 3 is snapped onto the outside of the fixed shaft 8. A motor 7 providing power is bolted to the inside of the backrest 3, and a worm gear 4 is keyed to the power output end of the motor 7. A worm gear 10 is meshed with one side of the worm gear 4 and is sleeved and fixed to the outside of the fixed shaft 8. A lubrication assembly 9 for lubricating the worm gear 10 is fixed to the inner side of the backrest 3 by screws. A turbine fan 11 for ventilating the backrest 3 is fixed to the inside of the backrest 3 by screws. A button 5 for controlling the motor 7 is rotatably connected to the outer side of the seat frame 2.

[0027] When adjusting the backrest 3 of the seat cushion 1, turn the button 5 on the outside of the seat frame 2. Then, the motor 7 inside the backrest 3 converts the received electrical energy into mechanical energy. The motor 7 drives the worm gear 4 to rotate, and then the worm gear 4 drives the external worm wheel 10 to rotate. Then, the worm wheel 10 drives the fixed shaft 8 to rotate, and then the fixed shaft 8 drives the external backrest 3 to rotate, thus facilitating the adjustment of the backrest 3 of the seat cushion 1.

[0028] For the sake of the service life of the worm gear 10 and the worm 4, for example, such as Figure 3 As shown, this utility model also includes the lubrication assembly 9, which includes a fixed box 20, a fixed tube 16, a cavity 17, a fixed block 15, a connecting block 14, a cavity 19, a spring 12, and a support block 13. The fixed box 20 is fixed to the inside of the backrest 3 by screws, and the cavity 17 for storing lubricating oil is provided inside the fixed box 20. The support block 13 is inserted into the bottom of the fixed box 20, and the surface of the support block 13 has a cavity 19 for the lubricating oil in the cavity 17 to flow out. The connecting block 14 is symmetrically slidably connected to one side of the fixed box 20, and a spring 12 for resetting the connecting block 14 is welded to one side of the connecting block 14. The fixed block 15 for pressing the connecting block 14 is clamped to the outside of the worm gear 4.

[0029] When in use, when the worm 4 rotates, it drives the external fixed block 15 to rotate. Then, the fixed block 15 contacts the connecting block 14 at the bottom of the fixed box 20. Then, the fixed block 15 retracts into the fixed box 20. Then, the spring 12 on one side of the fixed block 15 is compressed to generate elastic force. Then, the fixed block 15 drives the support block 13 to move into the cavity 17 inside the fixed box 20. Then, the hole 19 opened on the support block 13 enters the cavity 17 opened inside the fixed box 20. Then, the lubricating oil in the cavity 17 enters the hole 19. Then, the lubricating oil drips onto the worm 4. The worm 4 transfers the lubricating oil to the outside of the worm wheel 10, which makes it easy to add lubricating oil to the outside of the worm wheel 10 and the worm 4, reducing the friction between the worm wheel 10 and the worm 4 and improving the service life of the worm wheel 10 and the worm 4.

[0030] After the fixing block 15 separates from the connecting block 14, the spring 12 inside the fixing box 20 causes the connecting block 14 to pop outward. Then the connecting block 14 causes the support block 13 to move downward, so that the cavity 19 on the support block 13 moves out of the fixing box 20, thereby facilitating the sealing treatment of the bottom of the fixing box 20.

[0031] To add lubricating oil to the housing 20, for example, such as Figure 1 and Figure 3 As shown, the present invention also includes a fixed pipe 16 for conveying lubricating oil inserted into one side of the fixed box 20, and a fixed cover 6 for sealing the end of the fixed pipe 16 is rotatably connected to the outside of the backrest 3.

[0032] When using the device, to add lubricating oil to the fixed box 20, pull the fixed cover 6 outside the backrest 3, and then add lubricating oil into the fixed tube 16. The lubricating oil then enters the fixed box 20 through the fixed tube 16, making it easy to add lubricating oil to the fixed box 20.

[0033] To improve the sealing between the support block 13 and the fixing box 20, for example, such as Figure 3 As shown, the present invention also includes a rubber gasket 18 bonded to the outside of the support block 13 to seal the support block 13 with the fixing box 20.

[0034] When in use, when the support block 13 is reset, the rubber pad 18 on the support block 13 is tightly connected to the inside of the fixing box 20, thereby improving the sealing between the support block 13 and the fixing box 20.

[0035] For electrical equipment to function properly, for example, such as Figure 2 As shown, this utility model also includes an input terminal of the motor 7 that is electrically connected to the power supply terminal of an external power source.

[0036] When in use, the electrical equipment works normally by connecting to an external power source.

[0037] When using this utility model, if the backrest 3 of the seat cushion 1 needs to be adjusted, the button 5 on the outside of the seat frame 2 is turned. Then the motor 7 inside the backrest 3 converts the received electrical energy into mechanical energy. The motor 7 drives the worm gear 4 to rotate, and then the worm gear 4 drives the external worm wheel 10 to rotate. Then the worm wheel 10 drives the fixed shaft 8 to rotate, and then the fixed shaft 8 drives the external backrest 3 to rotate, thereby facilitating the adjustment of the backrest 3 of the seat cushion 1.

[0038] When the worm 4 rotates, it drives the external fixed block 15 to rotate. Then, the fixed block 15 contacts the connecting block 14 at the bottom of the fixed box 20. The fixed block 15 then retracts into the fixed box 20. The spring 12 on one side of the fixed block 15 is compressed to generate elastic force. Then, the fixed block 15 drives the support block 13 to move into the cavity 17 inside the fixed box 20. Then, the cavity 19 opened on the support block 13 enters the cavity 17 opened inside the fixed box 20. Then, the lubricating oil in the cavity 17 enters the cavity 19. Then, the lubricating oil drips onto the worm 4. The worm 4 transfers the lubricating oil to the outside of the worm wheel 10, which makes it easy to add lubricating oil to the outside of the worm wheel 10 and the worm 4, reducing the friction between the worm wheel 10 and the worm 4 and improving the service life of the worm wheel 10 and the worm 4.

[0039] When the fixing block 15 separates from the connecting block 14, the spring 12 inside the fixing box 20 causes the connecting block 14 to pop outward. Then the connecting block 14 causes the support block 13 to move downward, so that the cavity 19 on the support block 13 moves out of the fixing box 20, thereby facilitating the sealing treatment of the bottom of the fixing box 20.

[0040] When adding lubricating oil into the fixed box 20, pull the fixed cover 6 outside the backrest 3, and then add lubricating oil into the fixed tube 16. The lubricating oil then enters the fixed box 20 through the fixed tube 16, which makes it easy to add lubricating oil into the fixed box 20.

[0041] When the support block 13 is reset, the rubber pad 18 on the support block 13 is tightly connected to the inside of the fixing box 20, thereby improving the sealing between the support block 13 and the fixing box 20.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A seat with a worm gear adjustable backrest, characterized in that, The seat includes a seat frame (2), a seat cushion (1) is fixed to the inside of the seat frame (2) by screws, and a fixed shaft (8) is rotatably connected to the inside of the seat cushion (1). A backrest (3) is snapped onto the outside of the fixed shaft (8). A motor (7) that provides power is bolted to the inside of the backrest (3), and a worm gear (4) is keyed to the power output end of the motor (7). A worm wheel (10) is meshed on one side of the worm gear (4), and the worm wheel (10) is sleeved and fixed to the outside of the fixed shaft (8). A lubrication assembly (9) that lubricates the worm wheel (10) is fixed to the inside of the backrest (3) by screws. A turbine fan (11) that ventilates the backrest (3) is fixed to the inside of the backrest (3) by screws. A button (5) that controls the motor (7) is rotatably connected to the outside of the seat frame (2).

2. The seat with a worm gear adjustable backrest according to claim 1, characterized in that, The lubrication assembly (9) includes a fixed box (20), a fixed tube (16), a cavity (17), a fixed block (15), a connecting block (14), a cavity (19), a spring (12), and a support block (13). The fixed box (20) is fixed to the inside of the backrest (3) by screws, and the cavity (17) for storing lubricating oil is provided inside the fixed box (20). The support block (13) is inserted into the bottom of the fixed box (20), and the surface of the support block (13) is provided with a cavity (19) for the lubricating oil in the cavity (17) to flow out. The connecting block (14) is symmetrically slidably connected to one side of the fixed box (20), and a spring (12) for resetting the connecting block (14) is welded to one side of the connecting block (14). The fixed block (15) that presses the connecting block (14) is snapped onto the outside of the worm gear (4).

3. A seat with a worm gear adjustable backrest according to claim 2, characterized in that, A fixed tube (16) for conveying lubricating oil is inserted into one side of the fixed box (20), and a fixed cover (6) for sealing the end of the fixed tube (16) is rotatably connected to the outside of the backrest (3).

4. A seat with a worm gear adjustable backrest according to claim 2, characterized in that, A rubber gasket (18) is bonded to the outside of the support block (13) to seal the support block (13) and the fixing box (20).

5. A seat with a worm gear adjustable backrest according to claim 1, characterized in that, The input terminal of the motor (7) is electrically connected to the power supply terminal of the external power source.

Images