A trackless side sliding door and a reduction gearbox thereof

Abstract

The present application relates to the technical field of trackless side sliding door, disclose a kind of trackless side sliding door and its reduction gearbox, including reduction gearbox shell and controller, reduction gearbox shell is sequentially installed with drive portion, lower transmission mechanism, brake, upper transmission mechanism from below to top, drive portion is driven connection lower transmission mechanism, lower transmission mechanism is connected with brake transmission, brake is connected with upper transmission mechanism transmission, upper transmission mechanism transmission connection has transmission upper cover, the upper end of transmission upper cover extends output transmission shaft upward, brake and drive portion are connected with controller communication respectively.The trackless side sliding door and its reduction gearbox of the present application can simultaneously realize manual side sliding door and electric side sliding door, and realize emergency stop in the state of electric side sliding door.

Description

Technical Field

[0001] This invention relates to the technical field of trackless sliding doors, and in particular to a trackless sliding door and its speed reducer. Background Technology

[0002] Sliding doors are generally divided into manual sliding doors and electric sliding doors. The latter are relatively more expensive to manufacture and are commonly found in mid-to-high-end MPV models. In this case, the door for rear passengers to enter and exit the vehicle is electrically operated and slides open or closes to the side. Passengers pull the door handle from the outside of the vehicle, and the door will slide open electrically. After the passenger gets in, they pull the inner door handle from the inside, and the door will close automatically.

[0003] Currently, trackless sliding doors cannot simultaneously function as both manual and electric sliding doors, and cannot achieve emergency stop when in electric sliding door mode. Summary of the Invention

[0004] The purpose of this invention is to provide a trackless sliding door and its speed reducer, which can simultaneously realize manual and electric sliding doors, as well as emergency stop in the electric sliding door mode.

[0005] To achieve the above objectives, the present invention provides a gearbox for a trackless sliding door, comprising a gearbox housing and a controller. Inside the gearbox housing, from bottom to top, are sequentially installed a drive unit, a lower transmission mechanism, a brake, and an upper transmission mechanism. The drive unit is driven and connected to the lower transmission mechanism. The lower transmission mechanism is driven and connected to the brake. The brake is driven and connected to the upper transmission mechanism. The upper transmission mechanism is driven and connected to a transmission cover. An output transmission shaft extends upward from the upper end of the transmission cover. The brake and the drive unit are respectively communicatively connected to the controller.

[0006] As a preferred embodiment, the drive unit, the lower transmission mechanism, the brake, the upper transmission mechanism, and the transmission cover are coaxially mounted in sequence.

[0007] As a preferred embodiment, the upper transmission mechanism includes a sun gear, planetary gears, and an external gear ring. The sun gear is connected to the output shaft of the brake. The planetary gears are installed between the sun gear and the external gear ring. The planetary gears mesh with the sun gear and the external gear ring respectively. The external gear ring is fixed to the gearbox housing. The planetary gears are connected to the transmission cover.

[0008] As a preferred embodiment, the planetary gear is coaxially provided with a transmission hole, and the bottom surface of the transmission cover extends downward to form a transmission column, which is rotatably mounted in the transmission hole.

[0009] As a preferred embodiment, the number of planetary gears is set to multiple, and the number and position of the transmission column and the transmission hole are correspondingly arranged.

[0010] As a preferred embodiment, the sun gear has a central hole axially formed, the inner wall of the central hole is provided with an internal spline, the upper end of the brake is rotatably provided with a brake transmission shaft, the brake transmission shaft is installed in the central hole, and the outer periphery of the brake transmission shaft is provided with an external spline that drives and cooperates with the internal spline.

[0011] As a preferred embodiment, the brake is a magnetic powder brake.

[0012] As a preferred embodiment, the inner wall of the outer gear ring is provided with internal teeth that mesh with the planetary gear, the outer wall of the outer gear ring is provided with a fixing groove that is recessed in the radial direction, and the inner wall of the gearbox housing is provided with a fixing strip that protrudes in the radial direction, the fixing strip being engaged with the fixing groove.

[0013] As a preferred embodiment, the gearbox housing includes a first housing, a second housing, and a third housing arranged from bottom to top. The first housing, the second housing, and the third housing are coaxially arranged and internally connected to form an installation channel. The drive unit, the lower transmission mechanism, the brake, and the upper transmission mechanism are connected through the installation channel. The drive unit and the lower transmission mechanism are installed inside the first housing, the brake is installed in the second housing, the upper transmission mechanism is installed in the third housing, and the transmission cover is installed at the upper end of the third housing.

[0014] A trackless sliding door includes a sliding door body and a reduction gearbox, wherein the transmission cover is connected to the sliding door body in a transmission manner.

[0015] Compared with existing technologies, the trackless sliding door and its reduction gearbox of this invention have the following advantages: The output drive shaft is connected to the sliding door via a drive unit, which drives the lower transmission mechanism. The lower transmission mechanism, brake, upper transmission mechanism, and transmission cover are sequentially connected, thereby enabling the opening and closing of the door. The brake and drive unit are respectively connected to a controller, allowing the sliding door to stop when needed. The drive unit is connected to the lower transmission mechanism, and the brake is connected to the lower drive mechanism. The drive unit then drives the brake, which can rotate freely even without power. The drive unit provides electric transmission to the sliding door, enabling an electric sliding door mode. When neither the drive unit nor the brake is powered, the door can be manually opened or closed. Furthermore, in sloping environments, the brake is inactive, and the door swings freely, enabling a manual sliding door mode. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the split structure according to an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the connection structure of the drive unit, lower transmission mechanism and brake in the present invention.

[0019] Figure 4 This is a schematic diagram of the transmission mechanism in an embodiment of the present invention.

[0020] In the picture:

[0021] 10. Gearbox housing; 11. First housing; 12. Second housing; 13. Third housing;

[0022] 20. Drive unit; 21. Lower transmission mechanism; 22. Brake; 23. Brake drive shaft;

[0023] 30. Upper transmission mechanism; 31. Sun gear; 32. Center hole; 33. Planetary gear; 34. Transmission hole; 35. External gear ring; 36. Fixing groove;

[0024] 40. Transmission cover; 41. Output transmission shaft; 42. Transmission column. Detailed Implementation

[0025] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0026] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used to indicate orientation or positional relationships are based on the orientation or positional 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.

[0027] In the description of this invention, it should be understood that the terms "connected," "linked," and "fixed," etc., used in this invention should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or a welded connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] like Figures 1 to 4 As shown in the preferred embodiment of the present invention, a gearbox for a trackless sliding door includes a gearbox housing 10 and a controller. Inside the gearbox housing 10, from bottom to top, are sequentially installed a drive unit 20, a lower transmission mechanism 21, a brake 22, and an upper transmission mechanism 30. The drive unit 20 is driven by the lower transmission mechanism 21, which is connected to the brake 22. The brake 22 is connected to the upper transmission mechanism 30. The upper transmission mechanism 30 is connected to a transmission cover 40, and an output transmission shaft 41 extends upward from the upper end of the transmission cover 40. The brake 22 and the drive unit 20 are respectively communicatively connected to the controller.

[0029] In the gearbox of the trackless sliding door of the present invention, the output drive shaft 41 is connected to the sliding door via a drive unit 20, which drives the lower drive mechanism 21. The lower drive mechanism 21, brake 22, upper drive mechanism 30, and drive cover 40 are sequentially connected to each other, thereby realizing the opening and closing of the door. The brake 22 and the drive unit 20 are respectively connected to the controller. Under the control of the controller, the sliding door can be stopped when needed. The drive unit 20 is connected to the lower drive mechanism 21, and the brake 22 is connected to the lower drive mechanism. The drive unit 20 then drives the brake 22. The brake 22 can rotate freely when it is not powered. The drive unit 20 provides electric transmission to the sliding door, realizing the electric sliding door mode. When neither the drive unit 20 nor the brake 22 is powered, the door can be opened or closed manually. In a sloping environment, the brake 22 does not work, and the door will swing freely, realizing the manual sliding door mode.

[0030] In one embodiment, the drive unit 20 is a motor.

[0031] In one embodiment, the lower transmission mechanism 21 is a worm gear transmission, with the worm gear being connected to the output shaft of the drive unit 20, the worm gear being connected to the worm, and the worm being connected to the brake 22.

[0032] In one embodiment, the brake 22 is connected to the lower transmission mechanism 21 via a spline.

[0033] Furthermore, such as Figures 2 to 3 As shown, the drive unit 20, lower transmission mechanism 21, brake 22, upper transmission mechanism 30 and transmission cover 40 are installed coaxially in sequence so that the gearbox has a straight structure and a regular overall shape, which facilitates the planning of installation space and improves installation convenience.

[0034] Furthermore, such as Figure 4As shown, the upper transmission mechanism 30 includes a sun gear 31, planetary gears 33, and an external gear ring 35. The sun gear 31 is connected to the output shaft of the brake 22. The planetary gear 33 is installed between the sun gear 31 and the external gear ring 35, and meshes with both the sun gear 31 and the external gear ring 35. The external gear ring 35 is fixed to the gearbox housing 10, and the planetary gear 33 is connected to the transmission cover 40. The output shaft of the brake 22 is connected to the sun gear 31, which drives the sun gear 31 to rotate. The sun gear 31 drives the planetary gear 33 to rotate, and the planetary gear 33 drives the transmission cover 40 to rotate, thereby realizing the opening and closing of the sliding door on the opposite side. Through the reduction transmission of the upper transmission mechanism 30, the output torque of the drive unit 20 after transmission is increased to meet the mechanical requirements.

[0035] Furthermore, such as Figure 4 As shown, the planetary gear 33 has a coaxial transmission hole 34, and the bottom surface of the transmission cover 40 extends downward to form a transmission column 42. The transmission column 42 is rotatably mounted in the transmission hole 34, and the planetary gear 33 drives the transmission cover 40 to rotate through the transmission column 42 in the transmission hole 34. The rotation of the transmission cover 40 is achieved through the transmission column 42 and the transmission hole 34, which shortens the transmission distance between the planetary gear 33 and the output transmission shaft 41, making the torque transmission more stable.

[0036] Furthermore, such as Figure 4 As shown, the number of planetary gears 33 is set to multiple, and the number and position of the transmission pins 42 and transmission holes 34 are correspondingly arranged. The more planetary gears 33 there are, the stronger the transmission stability between the planetary gears 33 and the output transmission shaft 41. Preferably, the number of planetary gears 33 is set to three, which meets the usage requirements while reducing production costs.

[0037] Furthermore, such as Figure 4 As shown, the sun gear 31 has a central hole 32 axially formed, and the inner wall of the central hole 32 is provided with an internal spline. The upper end of the brake 22 is rotatably connected to a brake transmission shaft 23, which is installed in the central hole 32. The outer circumference of the brake transmission shaft 23 is provided with an external spline that engages with the internal spline. The central hole 32 and the brake transmission shaft 23 are connected by a spline. The spline connection has high load-bearing capacity and good centering.

[0038] Furthermore, such as Figure 3 As shown, brake 22 is a magnetic powder brake 22. The magnetic powder brake 22 has a very wide torque control range and high control precision. The transmitted torque and excitation current are in precise proportion, enabling high-precision control. Under the control of the controller, when the door needs to stop, the controller controls the brake 22 to be energized, increasing the static torque so that the gearbox stops rotating, ensuring that the door does not rotate due to external force or inertia.

[0039] Furthermore, such as Figure 4 As shown, the outer wall of the external gear ring 35 is provided with a radially recessed fixing groove 36, and the inner wall of the gearbox housing 10 is provided with a radially protruding fixing strip, which is engaged with the fixing groove 36. The inner wall of the external gear ring 35 is provided with internal teeth that mesh with the planetary gear 33. The gearbox housing 10 is installed in the fixing groove 36 by the fixing strip, thereby fixing the external gear ring 35 to the gearbox housing 10.

[0040] Furthermore, such as Figures 1 to 2 As shown, the gearbox housing 10 includes a first housing 11, a second housing 12, and a third housing 13 arranged from bottom to top. The first housing 11, the second housing 12, and the third housing 13 are coaxially arranged and internally connected to form an installation channel. The drive unit 20, the lower transmission mechanism 21, the brake 22, and the upper transmission mechanism 30 are connected through the installation channel. The drive unit 20 and the lower transmission mechanism 21 are installed inside the first housing 11, the brake 22 is installed in the second housing 12, the upper transmission mechanism 30 is installed in the third housing 13, and the transmission cover 40 is installed at the upper end of the third housing 13. The overall structure has good stability and extends the service life of the components.

[0041] A trackless sliding door includes a sliding door body and a gearbox, with a transmission cover 40 connected to the sliding door body via a transmission mechanism.

[0042] The trackless sliding door of this valve is driven by a reduction gearbox to open and close. The trackless sliding door features a two-stage reduction gearbox in the drive unit 20, increasing the output torque of the motor and meeting mechanical design requirements. Under the control of the ECU, the trackless sliding door can be stopped when necessary.

[0043] In summary, this embodiment of the invention provides a trackless sliding door and its reduction gearbox. The output drive shaft 41 is connected to the sliding door via a drive unit 20, which drives the lower drive mechanism 21. The lower drive mechanism 21, brake 22, upper drive mechanism 30, and drive cover 40 are sequentially connected, thereby enabling the opening and closing of the door. The brake 22 and drive unit 20 are communicatively connected to a controller. Under the control of the controller, the sliding door can be stopped when necessary. The drive unit 20 is connected to the lower drive mechanism 21, and the brake 22 is connected to the lower drive mechanism. The drive unit 20 then drives the brake 22, which can rotate freely even without power. The drive unit 20 provides electric transmission to the sliding door, enabling an electric sliding door mode. When neither the drive unit 20 nor the brake 22 is powered, the door can be manually opened or closed. In sloping environments, the brake 22 is inactive, and the door swings freely, enabling a manual sliding door mode.

[0044] 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 reduction gearbox for a trackless sliding door, characterized in that: The device includes a gearbox housing and a controller. Inside the gearbox housing, from bottom to top, a drive unit, a lower transmission mechanism, a brake, and an upper transmission mechanism are installed sequentially. The drive unit is driven and connected to the lower transmission mechanism. The lower transmission mechanism is driven and connected to the brake. The brake is driven and connected to the upper transmission mechanism. The upper transmission mechanism is driven and connected to a transmission cover for driving and connecting to a sliding door body. An output transmission shaft extends upward from the upper end of the transmission cover. The brake and the drive unit are respectively communicatively connected to the controller. In electric mode, the drive unit drives the lower transmission mechanism and controls the brake to be de-energized to allow free rotation. The drive unit provides electric transmission to the side sliding door, thus realizing the electric side sliding door mode. In manual mode, the drive unit and the brake are de-energized. The brake is a magnetic powder brake, and the controller controls the brake to be energized, thus stopping the sliding door.

2. The gearbox of the trackless sliding door according to claim 1, characterized in that: The drive unit, the lower transmission mechanism, the brake, the upper transmission mechanism, and the transmission cover are coaxially mounted in sequence.

3. The gearbox of the trackless sliding door according to claim 1, characterized in that: The upper transmission mechanism includes a sun gear, planetary gears, and an external gear ring. The sun gear is connected to the output shaft of the brake. The planetary gears are installed between the sun gear and the external gear ring. The planetary gears mesh with the sun gear and the external gear ring respectively. The external gear ring is fixed to the gearbox housing. The planetary gears are connected to the transmission cover.

4. The gearbox of the trackless sliding door according to claim 3, characterized in that: The planetary gear has a transmission hole coaxially, and the bottom surface of the transmission cover extends downward to form a transmission column, which is rotatably mounted in the transmission hole.

5. The gearbox of the trackless sliding door according to claim 4, characterized in that: The number of planetary gears is set to be multiple, and the number and position of the transmission column and the transmission hole are set accordingly.

6. The gearbox of the trackless sliding door according to claim 3, characterized in that: The sun gear has a central hole axially, and the inner wall of the central hole is provided with an internal spline. The upper end of the brake is rotatably provided with a brake transmission shaft, which is installed in the central hole. The outer periphery of the brake transmission shaft is provided with an external spline that drives and cooperates with the internal spline.

7. The gearbox of the trackless sliding door according to claim 3, characterized in that: The inner wall of the outer gear ring is provided with internal teeth that mesh with the planetary gear, the outer wall of the outer gear ring is provided with a fixing groove that is recessed in the radial direction, and the inner wall of the gearbox housing is provided with a fixing strip that protrudes in the radial direction, and the fixing strip is engaged with the fixing groove.

8. The gearbox of the trackless sliding door according to claim 1, characterized in that: The gearbox housing includes a first housing, a second housing, and a third housing arranged from bottom to top. The first housing, the second housing, and the third housing are coaxially arranged and internally connected to form an installation channel. The drive unit, the lower transmission mechanism, the brake, and the upper transmission mechanism are connected through the installation channel. The drive unit and the lower transmission mechanism are installed inside the first housing, the brake is installed in the second housing, the upper transmission mechanism is installed in the third housing, and the transmission cover is installed at the upper end of the third housing.

9. A trackless sliding door, characterized in that: It includes a sliding door body and a gearbox as described in any one of claims 1-8, wherein the transmission cover is connected to the sliding door body in a transmission manner.

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