Automobile and automobile side sliding door

Abstract

The present application relates to the technical field of reduction gearbox, and discloses a tilting type reduction gearbox of automobile side sliding door, which comprises a driving mechanism, the driving mechanism comprises a power part and a worm that are connected with each other, and the power part is used for providing power to the worm; a transmission mechanism, the transmission mechanism comprises a main gear, the worm is engaged with the main gear, and the worm gear of the worm is inclined to the gear teeth of the main gear; a brake mechanism, the brake mechanism is connected with the main gear; and an output mechanism, the output mechanism is connected with the main gear to output torque to the automobile side sliding door. When the worm gear of the worm and the gear teeth of the main gear are engaged, they are in close contact and have a small inclination angle, so that the worm is more closely combined with the main gear when engaged, the engagement of the worm and the main gear is smoother, the impact of the main gear and the worm is reduced, the noise of the reduction gearbox is smaller, and the experience of customers is improved. When the automobile side sliding door is opened and closed, the power is sufficient, and the braking force is sufficient during slope parking, so that the situation that the door is automatically opened or closed during slope parking is prevented.

Description

Technical Field

[0001] This invention relates to the field of gearbox technology, and in particular to an automobile and a sliding side door for automobiles. Background Technology

[0002] A gearbox, also known as a speed reducer or reducer, primarily serves to reduce or increase the output of an electric motor. It operates on the principle of connecting the prime mover to the gearbox, which in turn connects to the driven machine. It is a power transmission device and can be classified into worm gear reducers, gear reducers, worm reducers, worm wheel reducers, and planetary reducers, among others. Automatic sliding doors in automobiles require a gearbox to connect to their power mechanism, ensuring appropriate sliding door movement speed and sufficient output torque. Currently, the braking device for automatic sliding doors generally uses a worm gearbox. The worm and spur gear in this gearbox are typically vertically aligned. This arrangement leads to significant noise and power loss during meshing of the worm's helical teeth and the spur gear's teeth, impacting the user experience. Furthermore, the lack of a proper braking mechanism can result in insufficient braking force on the sliding door when the car is parked on a slope, causing the door to open or close automatically. Summary of the Invention

[0003] The purpose of this invention is to provide an automobile, an automobile sliding door, and its tilting reduction gearbox, which makes the meshing of the worm gear and the main gear smoother, reduces the impact between the main gear and the worm gear, and reduces the noise of the reduction gearbox, thus improving the customer experience; it also ensures that the automobile sliding door has sufficient power when opening and closing, and sufficient braking force during slope parking, preventing the door from automatically opening or closing when parking on a slope.

[0004] To achieve the above objectives, the present invention provides a tilting reduction gearbox for a sliding door of an automobile, comprising:

[0005] A drive mechanism, comprising a power unit and a worm gear connected to each other, wherein the power unit is used to provide power to the worm gear;

[0006] A transmission mechanism, the transmission mechanism including a main gear, the worm meshing with the main gear, the worm teeth of the worm inclined toward the teeth of the main gear;

[0007] A braking mechanism, wherein the braking mechanism is connected to the main gear;

[0008] An output mechanism is connected to the braking mechanism to output torque to the vehicle's side sliding door.

[0009] Compared with existing technologies, the tilting reduction gearbox for a car sliding door, as described in this embodiment of the invention, offers the following advantages: One end of the worm gear is connected to a power unit to obtain power for rotation, while the other end meshes with a main gear. The worm teeth and the main gear teeth are closely fitted together with a slight tilt angle during meshing, resulting in smoother meshing and reduced impact between the worm and main gear. This also reduces noise in the reduction gearbox, improving the customer experience. The main gear is also connected to a braking mechanism and an output mechanism to transmit the power output by the worm gear to the car sliding door and provide braking force when needed. This ensures sufficient power for opening and closing the car sliding door, and provides sufficient braking force during slope parking, preventing the door from automatically opening or closing when parking on a slope.

[0010] In the tilting reduction gearbox of the automobile sliding door of this embodiment, the main gear is a spur gear, and the axis of the worm gear is tilted relative to the axis of the main gear.

[0011] In the tilting reduction gearbox of the automobile sliding door of this embodiment, when the main gear is a helical gear and its tilt angle matches the tilt angle of the worm, the axis of the worm and the axis of the main gear are arranged perpendicular to each other.

[0012] The tilting reduction gearbox of the automobile sliding door according to an embodiment of the present invention includes a power unit comprising a motor, the output shaft of which is connected to the worm gear to drive the worm gear to rotate.

[0013] The tilting reduction gearbox of the automobile sliding door of this embodiment of the invention includes a brake, one end of which is connected to the main gear, and the other end of which, facing away from the main gear, is connected to an output gear assembly.

[0014] In the tilting reduction gearbox of the automobile sliding door of this embodiment, the brake is connected to the output shaft of the main gear via a spline, and the brake is also connected to the output gear assembly via a spline.

[0015] The tilting reduction gearbox of the automobile sliding door of this embodiment of the invention includes an output gear assembly comprising a sun gear and planet gears meshing with the sun gear. The sun gear is sleeved on the output shaft of the brake, and the planet gears mesh with the sun gear on the same plane.

[0016] The tilting reduction gearbox of the automobile sliding door in this embodiment of the invention includes an output gear assembly that further includes a planetary carrier. The planetary carrier includes a protruding shaft that passes through the planetary gears. The number of protruding shafts corresponds to the number of planetary gears. A power shaft is provided at one end of the planetary carrier facing away from the planetary gears. The power shaft is connected to the drive device of the automobile sliding door.

[0017] The present invention also provides a sliding door for automobiles, including a tilting reduction gearbox as described in any of the above embodiments, and further including a gravity sensor and a controller, wherein the tilting reduction gearbox and the gravity sensor are both electrically connected to the controller.

[0018] Compared with existing technologies, the sliding door of this invention offers the following advantages: A gravity sensor detects the parking angle of the car and transmits this information to a controller to determine if the car is tilted. Based on this information, the controller sends a signal to a tilting gearbox to determine whether additional braking force is needed to prevent the sliding door from opening or closing automatically. The tilting gearbox contains a worm gear and a main gear. When the worm teeth and the main gear teeth mesh, they are closely engaged with a slight tilt angle, resulting in smoother meshing and reduced impact between the worm and main gear. This also reduces gearbox noise and improves the customer experience. The main gear is also connected to a braking mechanism and an output mechanism to transmit the power output from the worm gear to the sliding door and provide braking force when needed. This ensures sufficient power for opening and closing the sliding door, especially during slope parking, preventing the door from opening or closing automatically.

[0019] The present invention also provides an automobile, including the automobile sliding door described in any of the above embodiments.

[0020] Compared with existing technologies, the advantages of this invention for a car are as follows: The car can sense its parking angle through a gravity sensor in the sliding door and transmit this information to a controller. This controller then determines whether the car is tilted. Based on this information, the controller sends a signal to the tilting gearbox to determine whether additional braking force is needed to prevent the sliding door from opening or closing automatically. The tilting gearbox contains a worm gear and a main gear. When the worm teeth and the main gear teeth mesh, they are closely engaged with a slight tilt angle to ensure smoother meshing and reduce impact between the worm and main gear. This also reduces gearbox noise and improves the customer experience. The main gear is also connected to a braking mechanism and an output mechanism to transmit the power output by the worm gear to the sliding door and provide braking force when needed. This ensures sufficient power for opening and closing the sliding door, especially during slope parking, preventing the door from opening or closing automatically.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] Figure 1This is a schematic diagram of the external structure of the tilting reduction gearbox of the automobile side sliding door according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the tilting reduction gearbox of the automobile side sliding door according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the tilting gearbox of the automobile side sliding door according to an embodiment of the present invention, with the planetary carrier removed.

[0025] Figure 4 This is a schematic diagram of the spur gear and worm gear of the tilting reduction gearbox of the automobile side sliding door according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the helical gear and worm gear of the tilting reduction gearbox of a car side sliding door according to another embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the planetary carrier of the tilting reduction gearbox of the automobile side sliding door according to an embodiment of the present invention;

[0028] In the diagram, 1. Upper housing; 2. Lower housing; 3. Upper end cover; 4. Connecting end cover; 5. Power unit; 6. Worm gear; 7. Main gear; 8. Brake; 9. Sun gear; 10. Planet gears; 11. Planet carrier; 12. Protruding shaft; 13. Power shaft; 14. Internal gear ring. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicating orientation or gravity relationships, are based on the orientation or gravity relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0031] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0032] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0033] like Figure 1 and Figure 2 As shown, a tilting reduction gearbox for a sliding side door of an automobile according to a preferred embodiment of the present invention includes an upper housing 1 and a lower housing 2. An upper end cover 3 is provided on the top of the upper housing 1, and a connecting end cover 4 is provided between the upper housing 1 and the lower housing 2. Specifically, a drive mechanism and a transmission mechanism are provided in the lower housing 2. The drive mechanism includes a power unit 5 and a worm gear 6 connected to each other. The power unit 5 provides power to the worm gear 6 to drive it to rotate. The transmission mechanism includes a main gear 7, with the worm gear 6 meshing with it. The worm teeth of the worm gear 6 are inclined towards the teeth of the main gear 7. When meshing, the worm teeth of the worm gear 6 and the teeth of the main gear 7 are close to each other and have a small tilt angle, so that the worm gear 6 is more closely fitted to the main gear 7 during meshing, making the meshing of the worm gear 6 and the main gear 7 smoother, reducing the impact between the main gear 7 and the worm gear 6, and reducing the noise of the reduction gearbox, thus improving the customer experience.

[0034] The upper housing 1 is equipped with a braking mechanism and an output mechanism. The two ends of the braking mechanism are connected to the transmission mechanism and the output mechanism, respectively. When the braking mechanism outputs power, it transmits power between the transmission mechanism and the output mechanism. When braking is required, it outputs a reverse braking force to the output mechanism to stop the opening or closing of the car side sliding door. The braking force is sufficient during parking on a slope, preventing the side sliding door from opening or closing automatically. The output mechanism is used to output the braking force. The output mechanism is connected to the braking mechanism to transmit the power output by the main gear 7 to the car side sliding door, so that the car side sliding door has sufficient power when opening and closing.

[0035] like Figure 2 and Figure 4 As shown, in some embodiments of the present invention, the main gear 7 is a spur gear, and the teeth of the spur gear are parallel to its axis. The axis of the worm 6 is inclined relative to the axis of the main gear 7, so that the worm 6 as a whole is inclined relative to the teeth of the spur gear. At this time, the worm teeth on the worm 6 and the teeth of the spur gear are more closely engaged relative to the perpendicular teeth of the worm 6, resulting in less noise during operation and more direct power transmission, further improving transmission efficiency. Specifically, the inclination angle of the worm 6 is the inclination angle of the worm teeth relative to the spur gear when the axis of the worm 6 is perpendicular to the axis of the spur gear. This angle setting ensures that the worm teeth are closely engaged with the teeth of the spur gear in this embodiment. Specifically, one end of the lower housing 2 is provided with a downwardly inclined protruding part to adapt to and accommodate the inclined worm 6, so that the screw is protected in the lower housing 2.

[0036] like Figure 5 As shown, in some embodiments of the present invention, when the main gear 7 is a helical gear and its inclination angle matches the inclination angle of the worm teeth of the worm 6, the axis of the worm 6 and the axis of the main gear 7 are set perpendicular to each other. The inclination angle of the helical gear teeth matches the inclination angle of the worm teeth of the worm 6, so that the worm teeth on the worm 6 and the teeth of the spur gear are more closely engaged relative to the perpendicular teeth of the worm 6. This results in less noise during operation, more direct power transmission, and improved transmission efficiency.

[0037] It is understandable that in actual production, the choice between spur gears and helical gears depends on the shape and size of the space that houses the gearbox, and no specific restrictions are made here.

[0038] In some embodiments of the present invention, the power unit 5 includes a motor with smooth output and convenient maintenance and replacement. The motor is located outside the lower housing 2, and its output shaft is connected to the worm gear 6 to drive the worm gear 6 to rotate. Specifically, the power unit may also include a power drive device such as a cylinder.

[0039] like Figure 2 As shown, in some embodiments of the present invention, the braking mechanism includes a brake 8, which is used for transmission and braking. The brake 8 is an electric brake. One end of the brake 8 is connected to the main gear 7, and the end of the brake 8 facing away from the main gear 7 is connected to an output gear assembly. The output gear assembly is connected to the drive mechanism of the car side sliding door. When the main gear 7 rotates, the brake 8 transmits the power of the main gear 7 to the output gear assembly. When braking is required, the brake 8 stops transmitting the power of the main gear 7 and outputs a reverse braking force to the output gear assembly, so that the output gear assembly stops rotating as soon as possible and provides a reverse static torque to keep the car side sliding door stationary.

[0040] In some embodiments of the present invention, splines are provided at both ends of the brake 8, and splines that cooperate with the brake 8 are also provided on the output shaft of the main gear 7 and the input shaft of the output gear assembly; the brake 8 and the output shaft of the main gear 7 are connected by splines, and the brake 8 and the output gear assembly are also connected by splines. When spline connection is used, even if the main gear 7 rotates at high speed, it will not cause slippage at the connection point with the brake 8. The splines can make the force borne by the brake 8 evenly distributed, avoiding the situation of slippage and shaking caused by the instability of the connection point of the brake 8 in the gearbox.

[0041] like Figure 2 and Figure 3As shown, in some embodiments of the present invention, the output gear assembly includes a sun gear 9 and planet gears 10 meshing with the sun gear 9. The sun gear 9 is sleeved on the output shaft of the brake 8, and a spline is provided in the shaft hole of the sun gear 9, which mates with the spline on the output shaft of the brake 8. The planet gears 10 mesh with the sun gear 9 on the same plane, and multiple planet gears 10 are provided. An internal gear ring 14 concentric with the sun gear 9 is provided on the outer side of the planet gear 10. The internal gear ring 14 is fixedly mounted on the upper housing 1, and the end of the planet gear 10 facing away from the sun gear 9 meshes with the internal gear ring 14. When the sun gear 9 rotates, it can drive the planet gears 10 to rotate in the space between the internal gear ring 14 and the sun gear 9.

[0042] like Figure 2 and Figure 6 As shown, in some embodiments of the present invention, the output gear assembly further includes a planet carrier 11, which is disposed above the sun gear 9 and the planet gears 10. The planet carrier 11 extends downward to form a protruding shaft 12, which passes through the shaft hole of the planet gear 10. The outer diameter of the protruding shaft 12 matches the inner diameter of the shaft hole of the planet gear 10. The number of protruding shafts 12 corresponds to the number of planet gears 10. When the planet gears 10 rotate around the sun gear 9, they drive the protruding shafts 12 in the shaft hole of the planet gears 10 to rotate, and the protruding shafts 12 drive the planet carrier 11 to rotate around the sun gear 9. A drive shaft 13 is provided at the end of the planet carrier 11 facing away from the planet gears 10. The drive shaft 13 extends out of the upper housing 1 and is ultimately connected to the drive device of the automobile sliding door. When the planet carrier 11 rotates, it drives the drive shaft 13 to rotate, outputting braking force to the drive device of the automobile sliding door. Specifically, a bearing is provided between the drive shaft 13 and the upper housing 1.

[0043] A preferred embodiment of the present invention provides a sliding door for automobiles, comprising a tilting reduction gearbox as described in any of the above embodiments, a gravity sensor, and a controller. Both the tilting reduction gearbox and the gravity sensor are electrically connected to the controller. The gravity sensor senses the parking angle of the automobile and transmits this information to the controller to determine whether the automobile is tilted. Based on this information, the controller sends a signal to the tilting reduction gearbox to determine whether additional braking force is needed to prevent the sliding door from opening or closing automatically. If the vehicle encounters a slope, the door may not be able to stop, causing it to slowly open or close under the influence of gravity. In this case, the gravity sensor detects that the vehicle is tilted, and the controller also detects that the door is in an open position on the slope. The controller sends a signal to the tilting reduction gearbox, energizing the brake 8. The brake 8 generates braking force on the output mechanism, which in turn brakes the drive mechanism of the sliding door (increasing the static torque of the drive unit), preventing the door from opening or closing unexpectedly. When the controller receives a signal that the door needs to be closed or opened, it de-energizes the brake 8, preventing it from generating braking force on the drive mechanism, and energizes the motor, allowing the door to be opened and closed electrically. Furthermore, when the entire vehicle is powered off, the brake 8 also disconnects its circuit, at which point the door can be opened manually without being affected by the braking force of the brake 8.

[0044] A preferred embodiment of the present invention provides a car including a sliding door as described in any of the above embodiments. The car uses a sliding door for opening, and the sliding door is equipped with a tilting gearbox, a gravity sensor, and a controller as described in the above embodiments. The gravity sensor in the sliding door senses the parking angle of the car and transmits this information to the controller, which then determines whether the car is tilted. Based on this information, the controller sends a signal to the tilting gearbox to determine whether additional braking force is needed to prevent the sliding door from opening or closing automatically.

[0045] The working process of this invention is as follows: The gravity sensor senses the parking angle of the car and transmits it to the controller to determine whether the car is tilted. Based on this information, the controller sends a signal to the tilting reduction gearbox to determine whether additional braking force is needed to prevent the sliding door from opening or closing automatically. If the vehicle encounters a slope, the door may not be able to stop, causing it to slowly close or open under the influence of gravity. In this case, the gravity sensor detects that the vehicle is tilted, and the controller also detects that the door is in an open position on the slope. The controller sends a signal to the tilting reduction gearbox, energizing the brake 8. The brake 8 generates braking force on the output mechanism, braking the sliding door (increasing the static torque of the drive unit) to prevent the door from opening or closing unexpectedly. When the controller receives a signal that the door needs to be closed or opened, it de-energizes the brake 8, preventing braking force from being generated on the drive mechanism, allowing the door to open and close electrically. The tilting gearbox is equipped with a worm gear 6 and a main gear 7. When outputting power, the motor drives the worm gear 6 to rotate the main gear 7, which in turn drives the brake 8 to rotate. The brake 8 drives the sun gear 9 to rotate, which in turn drives the planet gears 10 on its outer side to rotate. The planet gears 10 drive the planet carrier 11, and the power shaft 13 on the planet carrier 11 outputs braking force to the drive mechanism of the side sliding door.

[0046] In summary, this invention provides an automobile, a sliding side door, and a tilting reduction gearbox. The worm gear 6 and the main gear 7 have a certain tilt angle during meshing, allowing for a closer engagement between the worm gear 6 and the main gear 7. This results in smoother meshing, reduces impact between the worm gear 6 and the main gear 7, and lowers the noise of the reduction gearbox, improving the customer experience. The main gear 7 is also connected to an output mechanism to transmit the power output from the worm gear 6 to the sliding side door, ensuring sufficient power for opening and closing. The braking mechanism prevents the door from automatically opening and closing when the vehicle is stopped on a slope.

[0047] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A sliding door for automobiles, characterized in that: The device includes a tilting gearbox, a gravity sensor, and a controller, both of which are electrically connected to the controller. The tilting gearbox includes: A drive mechanism, comprising a power unit and a worm gear connected to each other, wherein the power unit is used to provide power to the worm gear; A transmission mechanism, the transmission mechanism including a main gear, the worm meshing with the main gear, the worm teeth of the worm inclined toward the teeth of the main gear; A braking mechanism, the braking mechanism including a brake, one end of the brake being connected to the main gear; An output mechanism, connected to the braking mechanism, for outputting torque to the vehicle's side sliding door; The system uses a gravity sensor to detect the car's parking angle and transmits this information to the controller to determine if the car is tilted. Based on this information, the controller sends a signal to the brake to determine whether additional braking force is needed to prevent the sliding doors from opening or closing automatically. When the vehicle encounters a slope, the doors cannot be suspended and may slowly open or close due to gravity. In this case, the gravity sensor detects that the vehicle is tilted, and the controller also detects that the door is in an open position on the slope. The controller sends a signal to the tilting gearbox, energizes the brake, and the brake generates braking force on the output mechanism, which in turn brakes the drive mechanism of the sliding door to prevent the door from opening or closing unexpectedly.

2. The automobile sliding door according to claim 1, characterized in that: The main gear is a spur gear, and the axis of the worm is inclined to the axis of the main gear.

3. The sliding door for automobiles according to claim 1, characterized in that: When the main gear is a helical gear and its inclination angle matches the inclination angle of the worm, the axis of the worm and the axis of the main gear are set perpendicular to each other.

4. The automobile sliding door according to claim 2 or 3, characterized in that: The power unit includes a motor, the output shaft of which is connected to the worm gear to drive the worm gear to rotate.

5. The automobile sliding door according to claim 2 or 3, characterized in that: The brake is connected to an output gear assembly at the end facing away from the main gear.

6. The sliding door for automobiles according to claim 5, characterized in that: The brake is connected to the output shaft of the main gear via a spline, and the brake is also connected to the output gear assembly via a spline.

7. The sliding door for automobiles according to claim 5, characterized in that: The output gear assembly includes a sun gear and planet gears meshing with the sun gear. The sun gear is sleeved on the output shaft of the brake, and the planet gears mesh with the sun gear on the same plane.

8. The sliding door for automobiles according to claim 7, characterized in that: The output gear assembly also includes a planet carrier, which includes a protruding shaft passing through the planet gears. The number of protruding shafts corresponds to the number of planet gears. A drive shaft is provided at one end of the planet carrier facing away from the planet gears. The drive shaft is connected to the drive device of the automobile side sliding door.

9. A car, characterized in that: Including the automobile sliding door as described in any one of claims 1-8.

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