A three-wheeled motorcycle double universal joint transmission mechanism

Abstract

The utility model discloses a positive tricycle motorcycle double universal joint drive mechanism belongs to tricycle drive mechanism technical field, including the reverse gear, first universal joint, spline rubber cover, transmission shaft, second universal joint and drive rear axle, the output shaft of reverse gear is connected with first universal joint, first universal joint is connected with one end of transmission shaft, the other end of transmission shaft is connected with second universal joint, second universal joint is connected with drive rear axle, spline rubber cover is connected and arranged on transmission shaft, the driving fork of first universal joint and driven fork, the driving fork of second universal joint and driven fork are in the same plane respectively, and the included angle of reverse gear output shaft, drive rear axle input shaft and transmission shaft is equal, realizes equal -speed drive, and two universal joints play the angle compensation effect through transmission shaft, and spline rubber cover is used for dustproof, shock attenuation, and the operation stability of supplementary optimization drive mechanism is reduced vibration and the abnormal sound.

Description

Technical Field

[0001] This utility model belongs to the technical field of tricycle transmission mechanism, and particularly relates to a double universal joint transmission mechanism for a tricycle. Background Technology

[0002] In the transmission mechanism of a three-wheeled motorcycle, the universal joint is a key component for power transmission. This is especially true for the Q-2.2m off-axis model, where the off-axis layout makes the power transmission path more complex. In existing technologies, if a single universal joint is used, it is prone to uneven speed transmission due to angle changes, leading to significant vibration and abnormal noise problems in the transmission system. Even with a double universal joint transmission structure, the spline mating area is only protected by ordinary rubber sleeves for dust prevention. These rubber sleeves are not designed for the spline tooth profile and can only provide basic dust prevention, failing to achieve vibration reduction or the function of balancing the angular velocities at both ends of the transmission. Moreover, when faced with the complex angle fluctuations of off-axis models, the angle compensation effect of double universal joints is limited. After long-term use, spline wear and abnormal wear of the universal joints accelerate, further causing serious abnormal noises and severely affecting the riding experience and the service life of the transmission mechanism. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the prior art, this utility model provides a double universal joint transmission mechanism for a three-wheeled motorcycle, which at least partially solves the above technical problems.

[0004] The technical solution adopted by this utility model is as follows: A double universal joint transmission mechanism for a three-wheeled motorcycle includes a reverse gear, a first universal joint, a splined rubber sleeve, a drive shaft, a second universal joint, and a drive rear axle. The output shaft of the reverse gear is connected to the first universal joint, the first universal joint is connected to one end of the drive shaft, the other end of the drive shaft is connected to the second universal joint, the second universal joint is connected to the drive rear axle, and the splined rubber sleeve is fitted onto the drive shaft.

[0005] The spline rubber sleeve has a spline tooth-shaped structure and is used for dust prevention, vibration reduction, and to help optimize the smooth operation of the transmission mechanism, thereby reducing vibration and abnormal noise.

[0006] The input fork of the first universal joint is provided with an internal spline, and the output shaft of the reverse gear is directly connected to the internal spline of the input fork of the first universal joint via an external spline.

[0007] The first universal joint's output fork is provided with an external spline, and the inner side of the drive shaft is provided with an internal spline. The external spline of the first universal joint's output fork is connected to the internal spline on the inner side of the drive shaft.

[0008] The drive shaft has an external spline on its outer side, and the input fork of the second universal joint has an internal spline. The internal spline of the input fork of the second universal joint is connected to the external spline on the outer side of the drive shaft.

[0009] The output end of the second universal joint is connected to the drive rear axle via a flange.

[0010] The spline rubber sleeve is fitted onto the spline mating part of the drive shaft, and the internal shape of the spline rubber sleeve is adapted to the spline tooth profile to tightly wrap the spline structure.

[0011] With the above structure, the beneficial effects of this utility model are as follows: By rationally arranging the first universal joint and the second universal joint, that is, the driving fork and driven fork of the first universal joint and the driving fork and driven fork of the second universal joint are respectively on the same plane, and the included angles of the reverse gear output shaft, the drive rear axle input shaft and the transmission shaft are equal, constant speed transmission is achieved; and the two universal joints play an angle compensation role through the transmission shaft, and the spline rubber sleeve is used for dust prevention and vibration reduction, which helps to optimize the smooth operation of the transmission mechanism and reduce vibration and abnormal noise. Attached Figure Description

[0012] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0013] Figure 1 A schematic diagram of the existing double universal joint transmission mechanism for a three-wheeled motorcycle;

[0014] Figure 2 This is a schematic diagram of the structure of a double universal joint transmission mechanism for a three-wheeled motorcycle proposed in this utility model;

[0015] Figure 3 This is a schematic diagram of the connection structure between the first universal joint and the second universal joint proposed in this utility model.

[0016] In the attached diagram: 1. Reverse gear, 2. First universal joint, 3. Splined rubber sleeve, 4. Drive shaft, 5. Second universal joint, 6. Rear drive axle, 7. Flange, 8. Rubber sleeve, 9. Connecting shaft. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0019] like Figures 1-3 As shown, a double universal joint transmission mechanism for a three-wheeled motorcycle includes a reverse gear 1, a first universal joint 2, a splined rubber sleeve 3, a drive shaft 4, a second universal joint 5, and a drive rear axle 6. The output shaft of the reverse gear 1 is connected to the first universal joint 2. The first universal joint 2 is connected to one end of the drive shaft 4, and the other end of the drive shaft 4 is connected to the second universal joint 5. The second universal joint 5 is connected to the drive rear axle 6, and the splined rubber sleeve 3 is sleeved on the drive shaft 4.

[0020] The spline rubber sleeve 3 has a spline tooth-shaped structure and is used for dust prevention, vibration reduction, and to help optimize the smooth operation of the transmission mechanism, thereby reducing vibration and abnormal noise.

[0021] The input fork of the first universal joint 2 is provided with an internal spline, and the output shaft of the reverse gear 1 is directly connected to the internal spline of the input fork of the first universal joint 2 through an external spline.

[0022] The output fork of the first universal joint 2 is provided with an external spline, and the inner side of the drive shaft 4 is provided with an internal spline. The external spline of the output fork of the first universal joint 2 is connected to the internal spline on the inner side of the drive shaft 4.

[0023] The drive shaft 4 is provided with an external spline on its outer side, and the input fork of the second universal joint 5 is provided with an internal spline. The internal spline of the input fork of the second universal joint 5 is connected to the external spline on the outer side of the drive shaft 4.

[0024] The output end of the second universal joint 5 is connected to the drive rear axle 6 via a flange 7.

[0025] The spline rubber sleeve 3 is fitted onto the spline mating part of the drive shaft 4, and the internal shape of the spline rubber sleeve 3 is adapted to the spline tooth profile to tightly wrap the spline structure.

[0026] The specific usage is as follows: The output shaft of the reverse gear 1 is connected to the first universal joint 2, the first universal joint 2 is connected to the second universal joint 5 through the drive shaft 4, and the second universal joint 5 is connected to the drive rear axle 6; a splined rubber sleeve 3 is provided on the drive shaft 4. Through the reasonable arrangement of the first universal joint 2 and the second universal joint 5, that is, the driving fork and driven fork of the first universal joint 2 and the driving fork and driven fork of the second universal joint 5 are respectively in the same plane, and the included angles between the output shaft of the reverse gear 1, the input shaft of the drive rear axle 6 and the drive shaft 4 are equal, so as to achieve constant speed transmission; and the two universal joints play an angle compensation role through the drive shaft 4. The splined rubber sleeve 3 is used for dust prevention and vibration reduction, and helps to optimize the smooth operation of the transmission mechanism, and reduce vibration and abnormal noise.

[0027] 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. In conclusion, if those skilled in the art, inspired by this description, design similar structural methods and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A double universal joint transmission mechanism for a three-wheeled motorcycle, characterized in that, The device includes a reverse gear (1), a first universal joint (2), a splined rubber sleeve (3), a drive shaft (4), a second universal joint (5), and a drive rear axle (6). The output shaft of the reverse gear (1) is connected to the first universal joint (2). The first universal joint (2) is connected to one end of the drive shaft (4). The other end of the drive shaft (4) is connected to the second universal joint (5). The second universal joint (5) is connected to the drive rear axle (6). The splined rubber sleeve (3) is fitted onto the drive shaft (4).

2. The double universal joint transmission mechanism for a three-wheeled motorcycle according to claim 1, characterized in that, The spline rubber sleeve (3) has a spline tooth profile structure.

3. The double universal joint transmission mechanism for a three-wheeled motorcycle according to claim 1, characterized in that, The input fork of the first universal joint (2) is provided with an internal spline, and the output shaft of the reverse gear (1) is directly connected to the internal spline of the input fork of the first universal joint (2) through an external spline.

4. The double universal joint transmission mechanism for a three-wheeled motorcycle according to claim 1, characterized in that, The output fork of the first universal joint (2) is provided with an external spline, and the inner side of the drive shaft (4) is provided with an internal spline. The external spline of the output fork of the first universal joint (2) is connected to the internal spline on the inner side of the drive shaft (4).

5. The double universal joint transmission mechanism for a three-wheeled motorcycle according to claim 1, characterized in that, The drive shaft (4) is provided with an external spline on its outer side, and the input fork of the second universal joint (5) is provided with an internal spline. The internal spline of the input fork of the second universal joint (5) is connected to the external spline on the outer side of the drive shaft (4).

6. The double universal joint transmission mechanism for a three-wheeled motorcycle according to claim 1, characterized in that, The output end of the second universal joint (5) is connected to the drive rear axle (6) via a flange (7).

7. A double universal joint transmission mechanism for a three-wheeled motorcycle according to claim 2, characterized in that, The spline rubber sleeve (3) is fitted onto the spline mating part of the drive shaft (4), and the internal shape of the spline rubber sleeve (3) is adapted to the spline tooth profile to tightly wrap the spline structure.

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