Rotary driving device for seat

Abstract

The utility model discloses a rotation driving device for a seat. The rotation driving device comprises a motor; the output end of the motor is connected with the input end of the speed reducer; the output end of the speed reducer is connected with the transmission mechanism; the output shaft is in transmission connection with the transmission mechanism, and the two ends of the output shaft are connected with a framework of a seat; and the positioning sensor is connected with the transmission mechanism, and the positioning sensor is used for acquiring rotation information of the output shaft. Through the application of the rotary driving device for the seat, the rotary driving device for the seat is particularly suitable for adjusting the seat of a high-speed train, the operation noise is remarkably reduced through the combination of the brushless direct current motor and the RV speed reducer, and the comfort level of passengers is improved; meanwhile, under the cooperation of the positioning sensor and the control device, the adjusting precision of the seat is further improved; and in addition, corresponding transmission connection can be controlled through the manual assembly, and the safety and the reliability are high.

Description

Technical Field

[0001] This utility model relates to the field of high-speed rail seat technology, and in particular to a rotary drive device for seats. Background Technology

[0002] Currently, with the rapid development of high-speed rail technology, the comfort, functionality, and operational stability of smart train business class seats have become key elements of passenger experience. The rotary drive mechanism, as the core component enabling seat adjustment, directly affects the seating experience.

[0003] However, traditional rotary drive systems used in airline and railway business class seats often employ planetary reducers. While these systems meet the seat rotation requirements to some extent, they tend to generate significant noise during high-speed operation, negatively impacting the passenger experience. Furthermore, these traditional solutions have limitations in energy efficiency, safety, and reliability, making it difficult to meet the high standards required for rotary drive systems in modern high-speed intelligent trains. Utility Model Content

[0004] In view of this, in order to solve the above problems, the purpose of this utility model is to provide a rotating drive device for a seat, comprising:

[0005] Electric motor;

[0006] A speed reducer, wherein the output end of the motor is connected to the input end of the speed reducer;

[0007] A transmission mechanism, wherein the output end of the reducer is connected to the transmission mechanism;

[0008] An output shaft is connected to the transmission mechanism, and both ends of the output shaft are connected to the frame of a seat.

[0009] A positioning sensor is connected to the transmission mechanism and is used to acquire rotation information of the output shaft.

[0010] In another preferred embodiment, the transmission mechanism includes:

[0011] Mounting base, wherein a mounting cavity is formed within the mounting base;

[0012] A first shaft is disposed within the mounting cavity;

[0013] The first gear is disposed in the mounting cavity and is mounted on the output end of the reducer;

[0014] A first transmission gear assembly is mounted on the first shaft, and the first gear is connected to the first transmission gear assembly in a transmission connection.

[0015] The second shaft is disposed within the mounting cavity;

[0016] The second transmission gear assembly is mounted on the second shaft and is connected to the first transmission gear assembly in a transmission connection.

[0017] The second gear is mounted on the output shaft and is connected to the second transmission gear assembly.

[0018] In another preferred embodiment, the first transmission gear assembly includes a third gear and a fourth gear, both of which are disposed on the first shaft. The first gear is drive-connected to the third gear, the third gear is optionally connected to the fourth gear, and the fourth gear is drive-connected to the second transmission gear assembly.

[0019] In another preferred embodiment, it further includes a manual assembly passing through the mounting base and rotatably connected to the fourth gear, the manual assembly being used to drive the fourth gear along the axial direction of the first shaft, the fourth gear being movably disengaged from or engaged with the third gear.

[0020] In another preferred embodiment, the inner side of the third gear is provided with at least one slot, and the outer side of the end of the fourth gear is provided with at least one locking element, the locking element matching the slot.

[0021] In another preferred embodiment, the manual component includes: an operating member, a spring, and a limiting member. The limiting member is fixedly mounted on the second shaft and abuts against one end of the fourth gear near the third gear. The spring is sleeved on the second shaft, with one end abutting against the fourth gear. The operating member is connected to one end of the second shaft and is used to drive the fourth gear to move along the second shaft.

[0022] In another preferred embodiment, the second transmission gear assembly includes a fifth gear and a sixth gear, both of which are mounted on the second shaft. The fifth gear is driven by the fourth transmission gear, and the sixth gear is driven by the second gear.

[0023] In another preferred embodiment, the second transmission gear assembly further includes a seventh gear and an eighth gear, the seventh gear being mounted on the second shaft and being connected in a transmission manner to the eighth gear, and the eighth gear being mounted on the input end of the positioning sensor.

[0024] In another preferred embodiment, the device further includes a control device disposed on the motor, the positioning sensor being electrically connected to the control device, and the motor being electrically connected to the control device.

[0025] In another preferred embodiment, it further includes: a connecting box, in which the motor and the control device are both disposed, and the reducer is disposed through the connecting box.

[0026] Because this utility model adopts the above-mentioned technical solution, its positive effects compared with the prior art are as follows:

[0027] By applying this utility model, a rotation drive device for seats is proposed, which is particularly suitable for seat adjustment in high-speed trains. The combination of a brushless DC motor and an RV reducer significantly reduces operating noise and improves passenger comfort. At the same time, the adjustment accuracy of the seat is further improved with the cooperation of positioning sensors and control devices. Moreover, this utility model can control the corresponding transmission connection through manual components, which has strong safety and reliability. Attached Figure Description

[0028] Figure 1 This is an overall schematic diagram of a rotating drive device for a seat according to the present invention;

[0029] Figure 2 This is a schematic diagram of the transmission of a rotary drive device for a seat according to the present invention.

[0030] In the attached image:

[0031] 1. Motor; 2. Reducer; 3. Transmission mechanism; 4. Positioning sensor; 5. Mounting base; 6. First shaft; 7. First gear; 8. First transmission gear assembly; 9. Second shaft; 10. Second transmission gear assembly; 11. Second gear; 12. Third gear; 13. Fourth gear; 14. Manual assembly; 15. Slot; 16. Locking device; 17. Operating component; 18. Spring; 19. Fifth gear; 20. Sixth gear; 21. Seventh gear; 22. Eighth gear; 23. Connecting box; 24. Output gear; 25. Output shaft; 26. Stop. Detailed Implementation

[0032] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "back", "horizontal", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] It should be noted that the terms "horizontal" and "vertical" in this utility model are used to describe approximate positional relationships, and not strictly "horizontal plane" or "vertical plane".

[0035] like Figure 1 and Figure 2 The diagram illustrates a preferred embodiment of a rotary drive device for a seat, comprising: a motor 1; a reducer 2, the output end of the motor 1 connected to the input end of the reducer 2; a transmission mechanism 3, the output end of the reducer 2 connected to the transmission mechanism 3; an output shaft 25, which is drively connected to the transmission mechanism 3, with both ends of the output shaft 25 connected to a seat frame; and a positioning sensor 4, connected to the transmission mechanism 3, used to acquire rotational information of the output shaft 25. Further, the output shaft 25 serves as the power output end of this rotary drive device, connected to the seat frame to drive the seat to perform translational or rotational adjustments. In actual operation, after receiving a working signal, the motor 1 drives the transmission mechanism 3 via the reducer 2, and the positioning sensor 4 monitors the movement of the transmission mechanism 3 in real time. It also obtains the rotational information of the output shaft 25 by calculating the transmission relationship of the gears within the transmission mechanism 3. Both the positioning sensor 4 and the motor 1 are communicatively connected to a control device for precise control.

[0036] Furthermore, as a preferred embodiment, the motor 1 is preferably a brushless DC motor 1, and the reducer 2 is preferably a resonant RV reducer 2.

[0037] Further, as a preferred embodiment, the transmission mechanism 3 includes: a mounting base 5, in which a mounting cavity is formed; a first shaft 6, disposed within the mounting cavity; a first gear 7, disposed within the mounting cavity and mounted on the output end of the reducer 2; a first transmission gear assembly 8, mounted on the first shaft 6, with the first gear 7 and the first transmission gear assembly 8 being driveably connected; a second shaft 9, disposed within the mounting cavity; a second transmission gear assembly 10, mounted on the second shaft 9 and drively connected to the first transmission gear assembly 8; and a second gear 11, mounted on the output shaft 25 and drively connected to the second transmission gear assembly 10. Further, the reducer 2 drives the first transmission gear assembly 8 to operate around the first shaft 6 via the first gear 7, and the first transmission gear assembly 8 drives the rotation of the second gear 11 via the second transmission gear assembly 10 to drive the rotation of the output shaft 25.

[0038] Furthermore, in a preferred embodiment, the first shaft 6 is fixedly connected to the first gear 7, and the second gear 11 is fixedly connected to the output shaft 25.

[0039] Furthermore, as a preferred embodiment, the mounting base 5 includes an upper housing and a lower housing that can be separated vertically, with the aforementioned mounting cavity formed between the upper housing and the lower housing. The upper housing and the lower housing are detachably connected by fasteners to facilitate maintenance of the transmission mechanism 3.

[0040] Furthermore, in a preferred embodiment, the first transmission gear assembly 8 includes a third gear 12 and a fourth gear 13, both of which are disposed on the first shaft 6. The first gear 7 is connected to the third gear 12 in a transmission manner, and the third gear 12 is optionally connected to the fourth gear 13. The fourth gear 13 is connected to the second transmission gear assembly 10 in a transmission manner.

[0041] Furthermore, in a preferred embodiment, the outer diameter of the third gear 12 is smaller than the outer diameter of the fourth gear 13, and the outer diameter of the fourth gear 13 is larger than the outer diameter of the first gear 7.

[0042] Furthermore, as a preferred embodiment, it further includes: a manual component 14, which passes through the mounting base 5 and is rotatably connected to the fourth gear 13. The manual component 14 is used to drive the fourth gear 13 to move along the axial direction of the first shaft 6. The fourth gear 13 is movably disengaged from or engaged with the third gear 12. Further, the fourth gear 13 is axially movable under the drive of the manual component 14; when the fourth gear 13 and the third gear 12 are disengaged, the power of the third gear 12 is no longer transmitted to the second gear 11 assembly; when the fourth gear 13 and the third gear 12 are engaged, the power of the third gear 12 is allowed to be transmitted to the second gear 11 assembly, and at this time, the fourth gear 13 still has the freedom to move axially.

[0043] Furthermore, in a preferred embodiment, the inner side of the third gear 12 is provided with at least one slot 15, and the outer side of the end of the fourth gear 13 is provided with at least one locking member 16, the locking member 16 matching the slot 15. Furthermore, when the fourth gear 13 and the third gear 12 are engaged, the locking member 16 extends into the slot 15, and the locking member 16 at least hinders the movement of the fourth gear 13 relative to the third gear 12.

[0044] Furthermore, in a preferred embodiment, the manual component 14 includes: an operating member 17, a spring 18, and a limiting member. The limiting member is fixedly mounted on the second shaft 9 and abuts against the end of the fourth gear 13 near the third gear 12. The spring 18 is sleeved on the second shaft 9, with one end of the spring 18 abutting against the fourth gear 13. The operating member 17 is connected to one end of the second shaft 9 and is used to drive the fourth gear 13 to move along the second shaft 9. Further, the operating member 17 is located on the outside of the mounting base 5. The user can pull the operating member 17 to cause the limiting member to drive the fourth gear 13 to move upward against the spring force of the spring 18 and separate it from the third gear 12. At this time, the user can manually control the adjustment of the seat. When the user no longer applies force to the operating member 17, the operating member 17 returns to its original position under the action of the spring force of the spring 18 and drives the fourth gear 13 to engage with the third gear 12.

[0045] Furthermore, in a preferred embodiment, the other end of the spring 18 directly or indirectly abuts against the inner top of the mounting base 5, and its position remains relatively fixed.

[0046] Furthermore, as a preferred embodiment, the manual component 14 further includes a stop 26, one end of which is rotatably mounted on the outer wall of the mounting base 5 via a torsion spring, and the other end of which is operably abutted against the operating component 17 to restrict the downward reset of the operating component 17.

[0047] Furthermore, in a preferred embodiment, the lower end of the operating member 17 is formed with a stepped portion. When the operating member 17 moves upward and causes the fourth gear 13 to separate from the third gear 12, a gap is formed between the lower surface of the stepped portion and the upper surface of the mounting base 5, and the other end of the stop member 26 abuts against the gap.

[0048] Furthermore, in a preferred embodiment, the second transmission gear assembly 10 includes a fifth gear 19 and a sixth gear 20, both of which are mounted on the second shaft 9. The fifth gear 19 is connected to the fourth transmission gear, and the sixth gear 20 is connected to the second gear 11.

[0049] Furthermore, in a preferred embodiment, the outer diameter of the fifth gear 19 is greater than the outer diameter of the fourth gear 13, the outer diameter of the fifth gear 19 is greater than the outer diameter of the sixth gear 20, and the outer diameter of the sixth gear 20 is greater than the outer diameter of the second gear 11.

[0050] Furthermore, as a preferred embodiment, the second transmission gear assembly 10 further includes a seventh gear 21 and an eighth gear 22. The seventh gear 21 is mounted on the second shaft 9, and the seventh gear 21 is connected to the eighth gear 22 in a transmission manner. The eighth gear 22 is mounted on the input end of the positioning sensor 4.

[0051] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model.

[0052] Based on the above, this utility model also has the following embodiments:

[0053] In a further embodiment of the present invention, it further includes: a control device, the control device being disposed on the motor 1, the positioning sensor 4 being electrically connected to the control device, and the motor 1 being electrically connected to the control device.

[0054] In a further embodiment of this utility model, the positioning sensor 4 is preferably a position sensor or a Hall sensor.

[0055] In a further embodiment of this utility model, it further includes: a connecting box 23, in which the motor 1 and the control device are both disposed, and the reducer 2 is disposed through the connecting box 23.

[0056] In a further embodiment of this utility model, the housing of the positioning sensor 4 is fixedly connected to one end of the lower surface of the mounting base 5.

[0057] In a further embodiment of this utility model, the outer shell of the reducer 2 is fixedly connected to the middle of the lower surface of the mounting base 5.

[0058] In a further embodiment of this utility model, the reducer 2 is disposed between the output shaft 25 and the reducer 2.

[0059] In a further embodiment of this utility model, a transmission gear is provided at each end of the output shaft 25, and the transmission gear is used for transmission connection with the above-mentioned skeleton.

[0060] In a further embodiment of this utility model, a gear or rack is provided on the frame so that the rotary drive device for this seat can drive the frame to rotate or translate.

[0061] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotary drive device for a seat, characterized in that, It comprises: a motor; a reducer, the output end of the motor is connected with the input end of the reducer; a transmission mechanism, the output end of the reducer is connected with the transmission mechanism; an output shaft, the output shaft is drivingly connected with the transmission mechanism, and both ends of the output shaft are connected with the framework of a seat; a positioning sensor, the positioning sensor is connected with the transmission mechanism, and the positioning sensor is used for acquiring the rotation information of the output shaft.

2. The rotary drive device for a seat according to claim 1, characterized by The transmission mechanism comprises: a mounting seat, an installation cavity is formed in the mounting seat; a first shaft, the first shaft is arranged in the installation cavity; a first gear, the first gear is arranged in the installation cavity, and the first gear is installed on the output end of the reducer; a first transmission gear assembly, the first transmission gear assembly is installed on the first shaft, and the first gear is drivingly connected with the first transmission gear assembly; a second shaft, the second shaft is arranged in the installation cavity; a second transmission gear assembly, the second transmission gear assembly is installed on the second shaft, and the second transmission gear assembly is drivingly connected with the first transmission gear assembly; a second gear, the second gear is installed on the output shaft, and the second gear is drivingly connected with the second transmission gear assembly.

3. The rotary drive device for a seat according to claim 2, characterized by The first transmission gear assembly comprises: a third gear and a fourth gear, the third gear and the fourth gear are arranged on the first shaft, the first gear is drivingly connected with the third gear, the third gear is selectively connected with the fourth gear, and the fourth gear is drivingly connected with the second transmission gear assembly.

4. The rotary drive device for a seat according to claim 3, characterized by It further comprises: a manual assembly, the manual assembly passes through the mounting seat and is rotatably connected with the fourth gear, the manual assembly is used for driving the movement of the fourth gear along the axial direction of the first shaft, and the fourth gear is movably separated from or clamped with the third gear.

5. The rotary drive device for a seat according to claim 4, characterized by At least one clamping groove is arranged on the inner side of the third gear, and at least one clamping piece is arranged on the outer side of the end of the fourth gear, and the clamping piece is matched with the clamping groove.

6. The rotary drive device for a seat according to claim 4, characterized by The manual assembly comprises: an operating piece, a spring and a limiting piece, the limiting piece is fixedly installed on the second shaft, the limiting piece abuts against one end of the fourth gear close to the third gear, the spring is sleeved on the second shaft, one end of the spring abuts against the fourth gear, the operating piece is connected with one end of the second shaft, and the operating piece is used for driving the movement of the fourth gear along the second shaft.

7. The rotary drive device for a seat according to claim 3, characterized by The second transmission gear assembly comprises: a fifth gear and a sixth gear, the fifth gear and the sixth gear are installed on the second shaft, the fifth gear is drivingly connected with the fourth transmission gear, and the sixth gear is drivingly connected with the second gear.

8. The rotary drive device for a seat according to claim 7, characterized by The second transmission gear assembly further comprises: a seventh gear and an eighth gear, the seventh gear is installed on the second shaft, the seventh gear is drivingly connected with the eighth gear, and the eighth gear is installed on the input end of the positioning sensor.

9. The rotary drive device for a seat according to claim 1, characterized by It further comprises: a control device, the control device is arranged on the motor, the positioning sensor is electrically connected with the control device, and the motor is electrically connected with the control device.

10. The rotary drive device for a seat according to claim 9, characterized by Also included are: a connection box, the motor and the control device are arranged in the connection box, the reducer passes through the connection box.

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