Automobile skylight transmission device

Abstract

The utility model discloses an automobile sunroof transmission device which comprises a transmission base, a transmission assembly is arranged in the transmission base, the transmission assembly comprises an input shaft, the input shaft is fixedly connected with a first gear, the first gear is used for driving a second gear, the second gear is used for driving a third gear, and the third gear is used for driving a third gear. The third gear is fixedly connected with a transmission worm, the transmission worm is used for driving a transmission worm gear, and the transmission worm gear is fixedly connected with an output shaft. The first gear, the second gear and the third gear of the transmission assembly form a step-by-step speed reduction structure, the output shaft of the transmission assembly can output low-speed high-torque power to the load shaft, the automobile sunroof can be stably and completely opened or closed, and negative effects caused by incomplete opening and closing of the sunroof are eliminated; the transmission worm and the transmission worm gear form a worm and gear structure, the stability of power transmission of the output shaft is improved through the self-locking performance of the worm and gear structure, and then the stability of the automobile sunroof assembly is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive sunroof transmission technology, specifically an automotive sunroof transmission device. Background Technology

[0002] A car sunroof, installed on the roof, effectively improves air circulation inside the vehicle, increasing the intake of fresh air. It also provides a wider field of vision and accommodates the needs of mobile photography and videography. Car sunroofs can be broadly categorized into: sliding, retractable, retractable-and-tilt, panoramic, and curtain types. They are primarily installed on commercial SUVs and sedans. A car sunroof is not only a ventilation tool but also an important feature that enhances the driving and riding experience. The sunroof's transmission mechanism is the core mechanical system that enables the sunroof to open, close, tilt, and position itself; its design directly affects the sunroof's stability, noise control, and lifespan.

[0003] Electric sunroofs rely on motors, which open, close, and stop at any position by rotating the motor forward and backward. The torque of the sunroof motor is the core parameter for driving the sunroof to open and close smoothly. If the torque is insufficient, the sunroof may not be able to close or open completely. Long-term half-open state may cause rainwater to seep in or foreign objects to get stuck in the track. Utility Model Content

[0004] The purpose of this invention is to provide an automotive sunroof transmission device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a car sunroof transmission device, including a transmission base, a transmission assembly built into the transmission base, the transmission assembly including an input shaft, a first gear fixedly connected to the input shaft, the first gear driving a second gear, the second gear driving a third gear, a transmission worm fixedly connected to the third gear, the transmission worm driving a transmission worm wheel, and the transmission worm wheel fixedly connected to an output shaft.

[0006] The input shaft of the transmission assembly is fixedly connected to the main shaft of the motor.

[0007] The first gear and the second gear mesh and drive each other.

[0008] The second gear and the third gear mesh and drive each other.

[0009] The transmission worm and the transmission worm wheel mesh and transmit power.

[0010] The second gear is fixedly sleeved on the first connecting shaft, and both ends of the first connecting shaft are connected to the transmission base through bearings.

[0011] The third gear is fixedly sleeved on the second connecting shaft, and both ends of the second connecting shaft are connected to the transmission base through bearings.

[0012] The input shaft is connected to the transmission base via a bearing.

[0013] The transmission worm gear is fixedly sleeved on the output shaft, the output shaft is connected to the transmission base through a bearing, and the transmission worm is connected to the transmission base through a bearing.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The first gear, second gear and third gear of the transmission component of this utility model constitute a step-by-step reduction structure. The output shaft of the transmission component can output low-speed high-torque power to the load shaft, so that the car sunroof can be opened or closed smoothly and completely, eliminating the negative impact caused by incomplete opening and closing of the sunroof.

[0016] 2. The transmission worm and transmission worm wheel of the transmission assembly of this utility model constitute a worm gear structure. The worm gear structure has self-locking property, which improves the stability of power transmission of the output shaft, thereby improving the stability of the automotive sunroof assembly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal structure of the transmission base of this utility model;

[0018] Figure 2 This is a schematic diagram of one side view of the transmission component of this utility model;

[0019] Figure 3 This is a schematic diagram of the transmission assembly of this utility model from another side.

[0020] Figure 4 This is a schematic diagram of the overall structure from one side view of the present invention;

[0021] Figure 5 This is a schematic diagram of the overall structure from another side view of the present invention.

[0022] In the diagram: 1. Transmission base; 2. Transmission assembly; 21. Input shaft; 22. First gear; 23. Second gear; 24. Third gear; 25. Transmission worm; 26. Transmission worm wheel; 27. Output shaft; 231. First connecting shaft; 241. Second connecting shaft. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5 This utility model provides a technical solution: a car sunroof transmission device, including a transmission base 1, a transmission assembly 2 built into the transmission base 1, the transmission assembly 2 including an input shaft 21, the input shaft 21 being fixedly connected to a first gear 22, the first gear 22 being used to drive a second gear 23, the second gear 23 being used to drive a third gear 24, the third gear 24 being fixedly connected to a transmission worm 25, the transmission worm 25 being used to drive a transmission worm wheel 26, and the transmission worm wheel 26 being fixedly connected to an output shaft 27.

[0025] The input shaft 21 of the transmission assembly 2 is fixedly connected to the main shaft of the motor.

[0026] The first gear 22, the second gear 23, the third gear 24, the transmission worm 25, and the transmission worm wheel 26 constitute the transmission assembly 2. When the main shaft of the motor rotates, it drives the input shaft 21 at one end to rotate synchronously. The input shaft 21 drives the first gear 22 to rotate, and through the meshing between the teeth, it drives the second gear 23 to rotate. The second gear 23 drives the third gear 24 to rotate, and the third gear 24 drives the transmission worm 25 to rotate. The transmission worm 25 drives the transmission worm wheel 26 to rotate, and the transmission worm wheel 26 drives the output shaft 27 to rotate, thereby realizing the power transmission.

[0027] Output shaft 27 is connected to the car sunroof assembly to drive the car sunroof. By controlling the number of rotations and the direction of rotation of the motor spindle, the opening, closing, and parking of the car sunroof at any position can be controlled accordingly.

[0028] like Figure 2 and Figure 3As shown, the diameter of the second gear 23 is larger than that of the first gear 22, and the number of teeth of the second gear 23 is greater than that of the first gear 22. The diameter of the third gear 24 is larger than that of the second gear 23, and the number of teeth of the third gear 24 is greater than that of the second gear 23. When the smaller first gear 22 rotates, it drives the larger second gear 23 on one side to rotate, reducing the speed and increasing the torque, forming the first stage. The second gear 23 of the previous stage acts as the driving gear, driving the larger third gear 24 on one side to rotate, further reducing the speed and further increasing the torque, thus achieving progressive deceleration. Finally, the output shaft 27 of the transmission assembly 2 outputs low-speed, high-torque power to the load shaft, which drives the sunroof assembly through the load shaft, realizing power transmission. The sunroof can open and close smoothly, preventing the sunroof glass or guide rail from cracking or deforming due to excessive instantaneous force. Under low-speed conditions, the motor can precisely adjust the opening and closing position, such as the opening of the vents, and work with sensors to achieve anti-pinch function, improving safety.

[0029] The first gear 22 and the second gear 23 mesh and drive each other. When the first gear 22 rotates, it drives the second gear 23 to rotate through the meshing between the teeth.

[0030] The second gear 23 and the third gear 24 mesh with each other, and when the second gear 23 rotates, it drives the third gear 24 to rotate through the meshing between the teeth.

[0031] In this system, the transmission worm 25 meshes with the transmission worm wheel 26. When the third gear 24 rotates, it drives the transmission worm 25 at one end to rotate. The transmission worm 25 drives the transmission worm wheel 26 to rotate. The transmission worm 25 and the transmission worm wheel 26 form a worm gear structure. The worm gear structure has self-locking properties. When the transmission worm wheel 26 acts as the driving element, it cannot drive the transmission worm 25 in the reverse direction. The self-locking property of the worm gear structure improves the stability of the output shaft 27, that is, it improves the stability of power transmission. The sunroof assembly can be opened smoothly and will not easily shake due to external forces, thus improving the stability of the car sunroof assembly.

[0032] The second gear 23 is fixedly sleeved on the first connecting shaft 231. Both ends of the first connecting shaft 231 are connected to the transmission base 1 through bearings. The first connecting shaft 231 can rotate relative to the transmission base 1 under the drive of external force.

[0033] The third gear 24 is fixedly sleeved on the second connecting shaft 241. Both ends of the second connecting shaft 241 are connected to the transmission base 1 through bearings. The second connecting shaft 241 can rotate relative to the transmission base 1 under the drive of external force.

[0034] The input shaft 21 is connected to the transmission base 1 by a bearing, and the input shaft 21 can rotate relative to the transmission base 1 under the drive of an external force.

[0035] The transmission worm gear 26 is fixedly sleeved on the output shaft 27. The output shaft 27 is connected to the transmission base 1 through a bearing. The transmission worm 25 is connected to the transmission base 1 through a bearing. The transmission worm gear 26 can rotate relative to the transmission base 1 under the drive of an external force, and the transmission worm 25 can rotate relative to the transmission base 1 under the drive of an external force.

[0036] Working principle: In use, the input shaft 21 of the transmission assembly 2 is fixedly connected to the main shaft of the motor, and the output shaft 27 of the transmission assembly 2 is connected to the load shaft. The load shaft is connected to the sunroof assembly. When the main shaft of the motor rotates, it drives the input shaft 21 at one end to rotate synchronously. The input shaft 21 drives the first gear 22 to rotate, and through the meshing between the teeth, it drives the second gear 23 to rotate. The second gear 23 drives the third gear 24 to rotate, and the third gear 24 drives the transmission worm 25 to rotate. The transmission worm 25 drives the transmission worm wheel 26 to rotate, and the transmission worm wheel 26 drives the output shaft 27 to rotate. The output shaft 27 drives the sunroof assembly to move. By controlling the number of rotations and the direction of rotation of the main shaft of the motor, the opening, closing, and arbitrary stopping position of the sunroof can be controlled accordingly. The first gear 22, the second gear 23, and the third gear 24 form a step-by-step reduction structure, outputting low-speed, high-torque power to the load shaft. The transmission worm 25 and the transmission worm wheel 26 form a worm gear structure, which has self-locking properties.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sunroof transmission for a motor vehicle comprising a transmission base (1), characterized in that: The transmission base (1) has a built-in transmission assembly (2), which includes an input shaft (21). The input shaft (21) is fixedly connected to a first gear (22). The first gear (22) is used to drive a second gear (23). The second gear (23) is used to drive a third gear (24). The third gear (24) is fixedly connected to a transmission worm (25). The transmission worm (25) is used to drive a transmission worm wheel (26). The transmission worm wheel (26) is fixedly connected to an output shaft (27).

2. A sunroof transmission according to claim 1, characterized in that: The input shaft (21) of the transmission assembly (2) is fixedly connected to the main shaft of the motor.

3. A sunroof transmission according to claim 1, characterized in that: The first gear (22) meshes with the second gear (23) for transmission.

4. A sunroof transmission according to claim 1, characterized in that: The second gear (23) meshes with the third gear (24) for transmission.

5. The sunroof transmission of claim 1, wherein: The transmission worm (25) meshes with the transmission worm wheel (26) for transmission.

6. A sunroof transmission as in claim 1, wherein: The second gear (23) is fixedly sleeved on the first connecting shaft (231), and both ends of the first connecting shaft (231) are connected to the transmission base (1) through bearings.

7. A sunroof transmission as in claim 1, wherein: The third gear (24) is fixedly sleeved on the second connecting shaft (241), and both ends of the second connecting shaft (241) are connected to the transmission base (1) through bearings.

8. A sunroof transmission according to claim 1, characterized in that: The input shaft (21) is connected to the transmission base (1) by bearings.

9. The sunroof transmission of claim 1, wherein: The transmission worm gear (26) is fixedly sleeved on the output shaft (27), and the output shaft (27) is connected to the transmission base (1) through a bearing. The transmission worm (25) is connected to the transmission base (1) through a bearing.

Images