External Reverse Gear Mount for Harley-Davidson 6-Speed Gearboxes
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Solution Overview
Problem
Harley-Davidson motorcycles, particularly touring and soft tail series, face difficulties in reversing due to their weight and complex driving mechanisms, making it inconvenient to install a reverse gear without significant modifications.
Innovation Solution
A reverse gear apparatus for Harley-Davidson motorcycles, comprising a bracket main body with a handle part and mounting part, a clutch connector, and a driving apparatus, which can be mounted externally without altering the existing driving mechanism, utilizing a gear or belt pulley transmission structure to enable reverse rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a reverse gear is added to Harley-Davidson motorcycles, then reverse functionality is achieved, but the device complexity increases
Solution Approach 1:
The reverse gear system is segmented into independent functional modules: a driving apparatus (motor or actuator) mounted on the bracket, a transmission structure (gear, sprocket, or belt pulley) housed in the accommodating cavity, and a clutch connector for power delivery. This modular segmentation allows the reverse function to be added without complicating the existing driving mechanism, as each module performs a specific function and can be independently maintained or replaced.
Solution Approach 2:
The clutch connector acts as an intermediary component between the transmission structure and the driven shaft of the power apparatus. It selectively engages or disengages the power transmission path, allowing the reverse gear to operate independently from the main driving mechanism. This intermediary role prevents the reverse function from adding permanent complexity to the existing system, as the clutch connector isolates the two systems when not in use.
2Ease of manufacture
If a reverse gear apparatus is mounted externally, then installation is simplified, but the space occupation increases
Solution Approach 1:
The transmission structure is nested within the accommodating cavity formed in the handle part of the bracket main body. This nesting arrangement allows the transmission components (gears, sprockets, or belt pulleys) to be housed within the existing spatial envelope of the bracket structure, minimizing additional space occupation while maintaining ease of external installation. The clutch connector is similarly integrated into the mounting part of the bracket.
Solution Approach 2:
The bracket main body is designed with a three-dimensional structure that utilizes vertical and lateral space efficiently. The handle part extends in one dimension while the mounting part projects in another, allowing the driving apparatus and transmission structure to be arranged in different spatial dimensions rather than competing for the same linear space. This dimensional arrangement minimizes the overall volume occupied by the reverse gear apparatus.
3Adaptability or versatility
If the original driving mechanism is changed to add reverse function, then reverse capability is achieved, but the cost increases
Solution Approach 1:
The clutch connector is designed with universal adaptability to interface with the existing driven shaft of the Harley-Davidson power apparatus. The bracket main body can be mounted on the outer side of the power apparatus without requiring modifications to the original driving mechanism. This universal design allows the same reverse gear apparatus to be installed across different Harley-Davidson motorcycle models without incurring high customization costs.
Solution Approach 2:
The reverse gear apparatus is designed to be self-contained and self-sufficient, with the driving apparatus providing its own power source independent of the main engine system. The transmission structure and clutch connector form a self-contained power transmission path that does not require modification of the existing driving mechanism. This self-service design eliminates the need for expensive modifications to the original system while achieving the reverse capability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables reverse gear functionality on Harley-Davidson motorcycles by minimizing space occupation and maintaining the integrity of the existing driving mechanism, ensuring stable and efficient operation.
Implementation Method 1
the transmission structure is a gear transmission structure
Implementation Method 2
the transmission structure is a belt pulley transmission structure
Implementation Method 3
the power wheel is connected with the shaft sleeve through an inclined surface clamping mechanism, and the power wheel rotates to drive the shaft sleeve to move and rotate axially through the inclined surface clamping mechanism
Implementation Method 4
the unidirectional transmission structure comprises a driving part disposed on the shaft sleeve and a driven part disposed on the rotating shaft, and the shaft sleeve moves along an axial direction thereof to achieve power connection or power disconnection between the driving part and the driven part
Implementation Method 5
a resistance mechanism is disposed between the power wheel and the shaft sleeve to provide resistance to the shaft sleeve when the shaft sleeve moves
Data Source
AI summary
The present invention relates to the technical field of reverse gears, and in particular to a reverse gear apparatus for a Harley-Davidson motorcycle, and specifically refers to a reverse gear apparatus for a 6-speed gearbox for Harley-Davidson touring and soft tail series. The reverse gear apparatus includes: a handle part and a mounting part connected to one end of the handle part, where the handle part is used for mounting a driving apparatus, to serve as a power source for driving a driven shaft of a power apparatus connected with the motorcycle to rotate; a clutch connector is mounted on the mounting part, one end of the clutch connector is fixedly connected with the driven shaft of the power apparatus of the motorcycle, and the other end of the clutch connector is connected with the driving apparatus.