Portable Blower Housing Dual Fastening Strap Alignment
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Solution Overview
Problem
Existing user-portable blower and/or vacuum devices, such as leaf blowers and vacuums, lack efficient carrying mechanisms that allow for balanced distribution of weight and ease of use.
Innovation Solution
The user-portable blower and/or vacuum device incorporates a housing with two fastening devices arranged on the same side section, allowing for proportional distribution of carrying force and automatic alignment of the device when carried, facilitated by a strap element and adjustable connecting device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single carrying mechanism is used, then the device structure is simple, but the weight distribution is unbalanced and carrying comfort is poor
Solution Approach 1:
The carrying mechanism is segmented into two separate fastening devices (first and second fastening devices) positioned at different locations on the housing. This segmentation allows the total weight to be distributed across two attachment points, improving carrying comfort and balance while maintaining relatively simple individual component structures.
2Ease of operation
If fastening devices are placed close together, then the device structure is compact, but there is insufficient clearance for user hand gripping
Solution Approach 1:
The two fastening devices are arranged in the longitudinal direction (along the tube axis) rather than only in the lateral direction. This dimensional arrangement provides sufficient clearance between the fastening devices for user hand gripping while maintaining a compact overall device structure, as the longitudinal spacing does not significantly increase the device's lateral footprint.
3Ease of operation
If the handle is positioned centrally, then the device is symmetric and simple to manufacture, but automatic alignment by gravity is not achieved
Solution Approach 1:
The handle is positioned asymmetrically relative to the two fastening devices, with the first fastening device located at a first distance and the second fastening device at a second distance from the handle. This asymmetric arrangement creates a specific center of gravity position that enables automatic alignment by gravity, improving ease of operation while the asymmetric design can be easily accommodated in the manufacturing process.
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
This design enhances user portability by allowing balanced weight distribution and automatic alignment of the device, making it easier to carry and use, while also providing options for interchangeable fastening devices and adjustable strap configurations.
Implementation Method 1
The user-portable blower and/or vacuum device has a fan unit for generating the blowing and/or suctioning air flow
Implementation Method 2
the blower and/or vacuum device carried by the user can automatically align itself by gravity so that the handle is inclined away from the user
Data Source
AI summary
A user-portable blower and/or vacuum device, in particular a leaf blower and/or vacuum device, includes: a blowing and/or suctioning tube for conveying a blowing and/or suctioning air flow along a tube axis of the blowing and/or suctioning tube, a fan unit for generating the blowing and/or suctioning air flow conveyable through the blowing and/or suctioning tube, a housing which carries the blowing and/or suctioning tube and which has a handle and two side sections, wherein the handle extends at least partially within a reference plane of the blower and/or vacuum device containing the tube axis, wherein the reference plane runs between the two side sections, and a first fastening device arranged on one of the side sections, and a second fastening device arranged on the same side section and at a distance from the first fastening device along the tube axis.