Electric seat

Abstract

The utility model relates to an electric seat, which comprises a backrest, a seat plate and a leg support, and further comprises a rotating motor mounted below the seat plate, and a seat plate output gear and a reduction gearbox input gear are mounted at the output end of the rotating motor; the rack is mounted at the bottom of the seat plate, and the rack is meshed with the seat plate output gear; the angle adjuster is mounted on the backrest, and the angle adjuster is in transmission connection with the input gear of the reduction gearbox; and the leg support motor is connected with the leg support through a screw rod. The rotating motor is used for driving the seat plate output gear and the reduction gearbox input gear to rotate, the rack meshed with the seat plate output gear moves along with the rotating motor, and meanwhile the angle adjuster in transmission connection with the reduction gearbox input gear rotates along with the rotating motor, so that linkage adjustment of the seat plate and the backrest is achieved, and the number of driving motors is reduced through linkage adjustment; the structure is simplified, the cost is reduced, and the occupied space is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electric seats, specifically to an electric seat. Background Technology

[0002] Electric seats are widely used in the manufacturing of automobiles, high-speed trains, and aircraft. Their structure typically includes a seat frame, adjustment mechanism, drive motor, control system, and power supply. The driver operates the system to transmit commands to the control system, which then controls the drive motor to adjust the seat.

[0003] To ensure the comfort of electric seats, adjustments are typically made in multiple aspects, including seat back sliding, backrest angle adjustment, and leg rest angle adjustment. This requires multiple drive motors and transmission mechanisms, resulting in a complex structure, high cost, and large space occupation. Utility Model Content

[0004] Based on the above description, this utility model provides an electric seat to solve the problems of complex structure, high cost, and large space occupation in related technologies.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: An electric seat includes a backrest, a seat board, and a leg rest, and further includes: a rotary motor installed below the seat board, the output end of which is equipped with a seat board output gear and a gearbox input gear; a rack installed at the bottom of the seat board, the rack meshing with the seat board output gear; an angle adjuster installed on the backrest, the angle adjuster being connected to the gearbox input gear; and a leg rest motor connected to the leg rest via a lead screw, the leg rest being installed on the main frame via a leg rest rotation shaft.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, a manual conversion device is installed on the main frame. The manual conversion device includes a leg support manual clutch lever, which is connected to the leg support motor clutch gear of the leg support motor. The leg support manual clutch lever can drive the leg support motor clutch gear to disengage.

[0008] Furthermore, the manual conversion device includes a backrest manual clutch lever, which is connected to the rotary motor clutch gear of the rotary motor, and the backrest manual clutch lever can drive the rotary motor clutch gear to disengage.

[0009] Furthermore, the seat plate is mounted on the main frame, and a side plate is provided below the main frame. A sliding groove is provided on the side plate, and the sliding groove extends along the moving direction of the seat plate. The main frame is connected to the sliding groove through a connecting block.

[0010] Furthermore, a linkage reduction gearbox is installed below the seat plate, and a reduction gearbox output shaft is installed at the output end of the linkage reduction gearbox. The angle adjuster is installed on the reduction gearbox output shaft, and the reduction gearbox output shaft is connected to the reduction gearbox input gear for transmission.

[0011] Furthermore, a first transmission gear is installed at the output end of the rotary motor, and a first transmission wheel is installed on the output shaft of the gearbox. The first transmission gear is connected to the first transmission wheel via a first transmission belt.

[0012] Furthermore, a second transmission wheel is mounted on the output shaft of the gearbox, and the second transmission wheel is connected to the input gear of the gearbox via a second transmission belt, wherein the first transmission gear meshes with the input gear of the gearbox.

[0013] Furthermore, the lead screw is hinged to the leg support via a rotating rod, which can rotate around the lead screw.

[0014] Furthermore, a sensor is provided between the leg rest, the seat plate, and the handle. The sensor signal is connected to the controller, and the controller signal is connected to the leg rest motor.

[0015] Furthermore, the rack is arc-shaped and gradually tilts downward along the direction of movement of the seat plate.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0017] By using a rotary motor to drive the output gear of the seat plate and the input gear of the gearbox to rotate, the rack meshing with the output gear of the seat plate moves accordingly. At the same time, the angle adjuster, which is connected to the input gear of the gearbox, rotates accordingly, thereby realizing the linkage adjustment of the seat plate and the backrest. By using a leg rest motor to drive the lead screw to move, the forward movement of the lead screw causes the leg rest to rotate along the leg rest rotation axis, thereby achieving the angle adjustment of the leg rest. The linkage adjustment reduces the number of drive motors, simplifies the structure, reduces costs, and reduces space occupation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal structure of the electric seat provided in an embodiment of the present utility model;

[0019] Figure 2 for Figure 1 A partial structural diagram of region A in the middle;

[0020] Figure 3 This is a schematic diagram of the internal structure of the electric seat from another angle, provided as an embodiment of the present invention.

[0021] Figure 4 for Figure 3 A schematic diagram of the local structure of region B in the middle.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Rotary motor; 2. Rotary motor output shaft; 3. Seat plate output gear; 4. Rack; 5. Linkage gearbox; 6. Gearbox input gear; 7. Gearbox output shaft; 8. Angle adjuster; 9. Leg support motor; 10. Leg support rotating shaft; 11. Lead screw; 12. Leg support; 13. Manual conversion device; 14. Leg support manual clutch lever; 15. Backrest manual clutch lever; 16. Seat plate; 17. Backrest; 18. Slide groove; 19. Main frame; 20. Side plate; 21. Connecting block; 22. Rotating rod; 23. First transmission wheel; 24. Second transmission wheel; 25. First transmission gear. Detailed Implementation

[0024] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0025] This utility model provides an electric seat that can solve the problems of poor comfort and inability to meet various needs in related technologies.

[0026] The overall functions of the electric seat include: the electric seat can be placed against a wall, and the seat back, leg rest, and four-way lumbar support can be electrically adjusted.

[0027] 1. Seat and backrest linkage principle

[0028] The main structure includes a rotary motor 1, which is installed below the seat plate 16. The output end of the rotary motor 1 is equipped with a seat plate output gear 3 and a gearbox input gear 6; a rack 4, which is installed at the bottom of the seat plate 16 and meshes with the seat plate output gear 3; and an angle adjuster 8, which is installed on the backrest 17 and is connected to the gearbox input gear 6.

[0029] The power output of the rotating motor output shaft 2 simultaneously drives the backrest angle adjuster 8 and the seat plate output gear 3 to achieve linkage adjustment of the seat plate and backrest.

[0030] The seat plate 16 is mounted on the main frame 19. A side plate 20 is provided below the main frame 19. A sliding groove 18 is provided on the side plate 20. The sliding groove 18 extends along the moving direction of the seat plate 16. The main frame 19 is connected to the sliding groove 18 through a connecting block 21. The rack 4 is arc-shaped and gradually tilts downward along the moving direction of the seat plate 16.

[0031] The rotary motor 1 provides rotational power, and the rotation of the output shaft 2 of the rotary motor drives the output gear 3 of the seat plate to rotate. Through meshing with the rack 4, the rotational motion is converted into translational motion. Under the limit of the slide groove 18, the motion moves along a specified trajectory, realizing the forward or backward translation and angle adjustment of the seat plate 16.

[0032] A linkage reduction gearbox 5 is installed below the seat plate 16. A reduction gearbox output shaft 7 is installed at the output end of the linkage reduction gearbox 5. The angle adjuster 8 is installed on the reduction gearbox output shaft 7. The reduction gearbox output shaft 7 is connected to the reduction gearbox input gear 6. A first transmission gear 25 is installed at the output end of the rotary motor 1. A first transmission wheel 23 is installed on the reduction gearbox output shaft 7. The first transmission gear 25 is connected to the first transmission wheel 23 through a first transmission belt. A second transmission wheel 24 is installed on the reduction gearbox output shaft 7. The second transmission wheel 24 is connected to the reduction gearbox input gear 6 through a second transmission belt. The first transmission gear 25 meshes with the reduction gearbox input gear 6.

[0033] While the output shaft 2 of the rotary motor rotates and drives the output gear 3 of the seat plate to rotate, a portion of the output power of the rotary motor 1 drives the input gear 6 of the gearbox in the linkage gearbox 5 to rotate. Through the internal reduction transmission of the linkage gearbox 5, the output shaft 7 of the gearbox rotates. The output shaft 7 of the gearbox has a spline structure and cooperates with the spline hole of the angle adjuster 8 to drive the angle adjuster to rotate. The angle adjustment of the backrest 17 is achieved through the connection between the backrest 17 and the angle adjuster 8.

[0034] This feature allows users to customize the backrest angle to their specific requirements, such as semi-reclining, full reclining, or zero gravity. The structure is simple and reliable.

[0035] 2. Working principle of leg support

[0036] The main structure includes a leg support motor 9, which is connected to the leg support 12 via a lead screw 11. The leg support 12 is mounted on the main frame 19 via a leg support rotation shaft 10. The lead screw 11 is hinged to the leg support 12 via a rotating rod 22, which can rotate around the lead screw 11.

[0037] The power output of the leg support motor 9 is achieved through the lead screw 11 to realize linear motion. The lead screw 11 is connected to the leg support 12 through a connector. The forward movement of the lead screw 11 causes the leg support 12 to rotate along the leg support rotation axis 10, thereby achieving the angle adjustment of the leg support 12.

[0038] A sensor is provided between the leg rest 12, the seat plate 16, and the handle. The sensor signal is connected to the controller, and the controller signal is connected to the leg rest motor 9.

[0039] The leg support 12 can achieve anti-pinch function through the cooperation of sensors and controls. It will automatically stop operating after reaching a certain anti-pinch force value to prevent injury.

[0040] The leg rest angle can be customized according to user requirements, and can be used in conjunction with the backrest to achieve semi-reclining, full-reclining, and zero-gravity postures.

[0041] 3. Manual adjustment function

[0042] The main structure includes a manual conversion device 13 and a backrest manual clutch lever 15; the manual conversion device 13 includes a leg rest manual clutch lever 14, which is connected to the leg rest motor clutch gear of the leg rest motor 9, and can drive the leg rest motor clutch gear to disengage; the backrest manual clutch lever 15 is connected to the rotary motor clutch gear of the rotary motor 1, and can drive the rotary motor clutch gear to disengage.

[0043] The manual conversion device 13 enables manual adjustment of the backrest, seat, and leg rest, and is mainly used for seat reset in the absence of power and manual adjustment during maintenance.

[0044] Manually engage the leg support clutch lever 14 to disengage the clutch gear inside the leg support motor 9 via the cable. At this time, the leg support 12 can be manually moved to achieve adjustment in the absence of power. After releasing the lever, the clutch gear automatically resets and re-engages to return to the normal electric adjustment state.

[0045] The manual adjustment of the seat backrest works similarly. Manually engage the manual clutch lever 15 on the backrest, and the clutch gear inside the rotary motor 1 will disengage via the cable. At this time, the seat backrest can be manually adjusted to achieve adjustment in the absence of power. After releasing the lever, the clutch gear will automatically reset and re-engage to return to the normal electric adjustment state.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0047] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0048] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. In the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have the transmission of electrical signals or data between them.

[0049] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electrically powered seat comprising a backrest (17), a seat pan (16) and a leg rest (12), characterized in that, Also include: Rotary motor (1) is installed below the seat plate (16), the output end of the rotary motor (1) is installed with seat plate output gear (3) and reduction box input gear (6); Rack (4) is installed at the bottom of the seat plate (16), the rack (4) is engaged with the seat plate output gear (3); Angle adjuster (8) is installed on the backrest (17), the angle adjuster (8) is drivingly connected with the reduction box input gear (6); Leg support motor (9) is connected with the leg support (12) through the lead screw (11), the leg support (12) is installed on the main frame (19) through the leg support rotary shaft (10).

2. The electric seat of claim 1, wherein: The main frame (19) is provided with a manual switching device (13), the manual switching device (13) comprises a leg support manual clutch knob (14), the leg support manual clutch knob (14) is connected to the leg support motor clutch gear of the leg support motor (9), and the leg support manual clutch knob (14) can drive the leg support motor clutch gear to disengage.

3. The electric seat of claim 2, wherein: The manual switching device (13) comprises a backrest manual clutch knob (15), the backrest manual clutch knob (15) is connected to the rotary motor clutch gear of the rotary motor (1), and the backrest manual clutch knob (15) can drive the rotary motor clutch gear to disengage.

4. The electric seat of claim 1, wherein: The seat plate (16) is installed on the main frame (19), the lower portion of the main frame (19) is provided with a side plate (20), the side plate (20) is provided with a sliding groove (18), the sliding groove (18) extends along the moving direction of the seat plate (16), and the main frame (19) is connected with the sliding groove (18) through a connecting block (21).

5. The electric seat of claim 1, wherein: A linkage reduction box (5) is installed below the seat plate (16), the output end of the linkage reduction box (5) is provided with a reduction box output shaft (7), the reduction box output shaft (7) is provided with the angle adjuster (8), and the reduction box output shaft (7) is drivingly connected with the reduction box input gear (6).

6. The electric seat of claim 5, wherein: The output end of the rotary motor (1) is provided with a first transmission gear (25), the reduction box output shaft (7) is provided with a first transmission wheel (23), and the first transmission gear (25) is connected with the first transmission wheel (23) through a first transmission belt.

7. The electric seat of claim 6, wherein: The reduction box output shaft (7) is provided with a second transmission wheel (24), the second transmission wheel (24) is connected with the reduction box input gear (6) through a second transmission belt, and the first transmission gear (25) is engaged with the reduction box input gear (6).

8. The electric seat of claim 1, wherein: The screw rod (11) is hinged with the leg rest (12) through a rotating rod (22), which can rotate around the screw rod (11).

9. The electric seat of claim 1, wherein: A sensor is arranged between the leg rest (12) and the seat plate (16) and the handle, and the sensor is signal connected to a controller, and the controller is signal connected to the leg rest motor (9).

10. The electric seat of claim 1, wherein: The rack (4) is arc-shaped and gradually inclined downward along the moving direction of the seat plate (16).

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