Wiper Pivot Shaft Mounting for Accurate Inclined-Body Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wiper devices face challenges in accurately assembling holding members due to potential displacement when assembling or fixing them to an inclined vehicle body, especially when the pipe linking pivot shafts is omitted, leading to difficulties in synchronizing the assembly of both sides within a short time.
Innovation Solution
A wiper device design featuring pivot shafts linked by a driving part and a linking part, with holding members that include rotatable support parts and engagement claws to securely fix to the vehicle body, allowing for temporary fixation and preventing displacement during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the pipe linking the two pivot shafts is omitted to reduce the number of parts and weight, then the device complexity and weight are reduced, but the holding members may rotate with respect to the rod during assembly, causing displacement and making accurate assembly difficult
Solution Approach 1:
The patent applies preliminary action by providing engagement claws on the holding members that can temporarily engage with the rod before the holding members are fully fixed to the vehicle body. This preliminary engagement prevents rotation and displacement of the holding members during the assembly process, ensuring accurate positioning without requiring the pipe linking mechanism.
2Adaptability or versatility
If the holding members are assembled on an inclined vehicle body, then the wiper device can be installed on various vehicle configurations, but the other holding member may be moved due to its own weight, making assembly even more difficult
Solution Approach 1:
The engagement claws provide preliminary support and positioning for the holding members before they are fully secured. This preliminary action counteracts the effect of gravity on inclined surfaces by preventing the holding members from moving or rotating due to their own weight during the assembly process, enabling accurate assembly on inclined vehicle bodies.
Solution Approach 2:
The engagement claws act as an intermediary mechanism between the holding members and the rod. They provide a temporary connection that stabilizes the holding members during assembly, allowing workers to securely position both holding members even on inclined surfaces without the holding members moving under their own weight.
3Productivity
If the holding members are to be assembled accurately within a short time, then productivity is improved, but the assembly process becomes more difficult when the holding members can rotate during assembly
Solution Approach 1:
The engagement claws provide preliminary stabilization of the holding members during assembly, preventing rotation and displacement. This makes the assembly operation easier and more straightforward, allowing workers to quickly and accurately position both holding members without needing to perform additional corrective adjustments, thereby improving productivity.
Data Source
AI summary
A first pivot shaft 2a and a second pivot shaft 2b linked with wiper arms; a driving part, rotationally driving the first pivot shaft; a linking part, linked with the second pivot shaft and the driving part, and rotationally driving the two pivot shafts synchronously; and a first holding member 12a and a second holding member 12b for fixing the respective pivot shafts to a vehicle body are provided. The second holding member 12b includes: a body part 20, rotatably supporting the second pivot shaft 2b; and three support parts 21, 22, 23, protruding from the body part 20. The first support part 22 and the third support part 23 in the three support parts 21, 22, 23 include fixed parts 30 fixed via bolts 105 and engagement pins 38 provided in the fixed parts 30 and engaged with the vehicle body.