Joint Design Reducing Parts via Segmented Grooves
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional power transmission joints have issues with a large number of parts, a complex manufacturing process, limited shaft angle capability, and lack of longitudinal play due to curvilinear groove designs.
Innovation Solution
A joint design featuring a plurality of spheres and hemispherical recesses on a cylindrical body with longitudinal grooves that extend in a linear direction, allowing for a curve between shafts and secure coupling through threading or prevention parts, reducing the number of parts and simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a torque transmitting part with journal member and roller is used, then torque transmission is achieved, but the number of parts increases and manufacturing becomes troublesome
Solution Approach 1:
The patent combines the torque transmitting part, journal member, and roller into a single integrated member with a T-shaped cross-section. The horizontal leg of the T-shape receives the roller while the vertical leg transmits torque, eliminating the need for separate components and simplifying manufacturing while maintaining torque transmission functionality.
2Adaptability or versatility
If curvilinear grooves are used in the domy plug, then shaft angle capability is improved, but longitudinal play is eliminated
Solution Approach 1:
The patent segments the groove design into two distinct functional zones: curvilinear grooves in the upper portion that enable shaft angle adjustment, and linear grooves in the lower portion that provide longitudinal play. This segmentation allows both functionalities to coexist without interference, with each zone performing its specific function independently.
3Ease of operation
If linear grooves are used in the hub, then longitudinal play is enabled, but shaft angle capability is reduced
Solution Approach 1:
The patent segments the groove design into two distinct functional zones: curvilinear grooves in the upper portion that enable shaft angle adjustment, and linear grooves in the lower portion that provide longitudinal play. This segmentation allows both functionalities to coexist without interference, with each zone performing its specific function independently.
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
The joint achieves secure coupling and uniform velocity transmission between shafts with reduced complexity and parts, maintaining stability over extended use without detaching, even at varying angles.
Implementation Method 1
a plurality of spheres (for example, 29a-29d in FIG. 1)
Implementation Method 2
hemispherical recesses for receiving the spheres (for example, 22a-22d in FIG. 2) are formed on a side face of a head
Implementation Method 3
The hub and a shaft coupled to said hub may be coupled by threading (for example, a structure shown in 34 in FIG. 9)
Data Source
Figure 1~2(c)
Figure 3(a)~4(c)
Figure 5(a)~6(e)
AI summary
PROBLEM TO BE SOLVED: A joint whose number of parts is reduced and whose production process is simplified. MEANS TO SOLVE THE PROBLEMS: The joint has spherical bodies (29a-29d), a circular cylindrical inner hub (20)in which hemispherical receiving sections (22a-22d) for receiving the spherical bodies (29a-29d) are formed in curved surfaces, and an outer hub (10) that has a receiving section (17) for receiving the inner hub (20) and also has longitudinal grooves (12a-12d) integrally formed with the receiving section (17) and in which the spherical bodies (29a-29d) received in the receiving sections (22a-22d) are received.