Riveting Tool Accessory With Screw-Pair Switching Mechanism
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Solution Overview
Problem
Existing riveting tools face limitations in efficiency and cost due to reliance on compressed air sources and complex structures, hindering market expansion and accessibility, particularly for industrial applications.
Innovation Solution
A riveting tool accessory with a cylindrical handle and rotating part connected by a threaded structure, featuring a safety valve mechanism that enables screw pair conversion before the riveting fastener contacts the guiding nozzle assembly, allowing adaptation to power output devices and adjustable preload force for increased flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pneumatic riveting tools are used, then riveting efficiency is improved, but device complexity and cost increase due to compressed air source requirements
Solution Approach 1:
The patent replaces the pneumatic system with a mechanical screw pair conversion mechanism. The rotating part converts rotational motion from power output devices into linear motion through the threaded structure, eliminating the need for compressed air sources while maintaining riveting functionality and reducing system complexity
Solution Approach 2:
The riveting tool accessory is designed to be adaptable to various power output devices through the universal rotating part interface. This allows the same mechanical structure to work with different power sources, enhancing versatility while avoiding specialization for pneumatic systems only
2Ease of operation
If integral electric riveting tools are used, then portability is improved, but device complexity increases due to complex internal structure
Solution Approach 1:
The invention separates the riveting tool into modular components: a handle, a rotating part, and a transmission part. This segmentation allows for simpler individual components that can be assembled together, reducing overall structural complexity while maintaining portability
Solution Approach 2:
The transmission part acts as an intermediary between the rotating part and the riveting fastener. It contains the safety valve mechanism and mediates the force transmission, simplifying the overall structure by creating a clear functional separation between power input and riveting output
3Reliability
If safety valve mechanism is added, then reliability is improved, but device complexity increases
Solution Approach 1:
The safety valve mechanism is merged into the transmission part, combining the safety function with the existing force transmission structure. This integration avoids adding separate safety components, thereby maintaining reliability while minimizing increases in device complexity
Solution Approach 2:
The safety valve mechanism is designed to automatically activate when the riveting fastener contacts the guiding nozzle assembly. The compression preloading spring and threaded structure work together to automatically enable screw pair conversion at the appropriate moment, eliminating the need for external control systems
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 accessory enables efficient screw pair conversion and adjustable preload force, enhancing the tool's adaptability and usability with power output devices, improving efficiency and reducing operational costs by simplifying the structure and eliminating the need for complex compressed air systems.
Implementation Method 1
a compression preloading spring disposed between the transmission part and the guiding nozzle assembly
Implementation Method 2
the rotating part and the transmission part are connected by a threaded structure, and when the rotating part rotates forward or reverse, the transmission part can be driven to retreat or advance
Data Source
Figure 1~2
Figure 3~5
Figure 6~7b
AI summary
A riveting tool accessory comprises a cylinder handgrip (1). A rotating member (2) and a transmission member (3) are disposed in the cylinder handgrip in a penetrating manner, the rotating member is axially positioned and circumferentially and rotatably connected to the cylinder handgrip, and the transmission member is circumferentially positioned and axially and movably connected to the cylinder handgrip. The rotating member and the transmission member can be connected by means of a thread structure (4). When the rotating member rotates forwards or backwards, the transmission member can be driven to move backwards or forwards. The front end of the transmission member is provided with a connecting member (5) capable of loading a riveting fastener (100), and the front end of the cylinder handgrip is provided with a guide nozzle assembly (6). The connecting member is disposed in the guide nozzle assembly in a penetrating manner, and the front end of the connecting member can reach out of the guide nozzle assembly. A compression pretightening spring (7) is disposed between the transmission member and the guide nozzle assembly, and a safety valve mechanism (8) is disposed between the transmission member and the connecting member. The riveting tool accessory has the advantages that the structural design is reasonable, and the riveting tool accessory can be adaptive to a driving device containing power output, and enables the riveting fastener to switch screw pairs before a force is applied to the riveting fastener. Also disclosed is a riveting tool using the riveting tool accessory.