Binocular Focusing Layout With Angled Push Rods
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Solution Overview
Problem
Common binoculars are unwieldy due to their bulky design and require significant mechanical load on push rods, making operation cumbersome.
Innovation Solution
The binocular design features a push rod with a longitudinal axis forming an acute angle with the hinge axis, one end in a tube and the other in the hinged bridge, and includes ergonomic waist-shaped tubes with oblique retaining recesses for improved ergonomics and reduced mechanical load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the push rod is arranged far from the hinged bridge, then the binocular structure is simpler, but long levers are required which result in significant mechanical load on the push rods
Solution Approach 1:
The push rod is arranged at an acute angle to the hinge axis rather than parallel, utilizing a different spatial dimension and orientation. This angular arrangement allows the push rod to be positioned closer to the hinged bridge while still achieving the necessary mechanical advantage, thereby reducing both the lever length and the mechanical load on the push rod.
2Ease of manufacture
If the push rod is arranged parallel to the hinge axis, then the installation is simpler, but the required installation space in the middle region is large
Solution Approach 1:
The push rod is oriented at an acute angle to the hinge axis, changing the spatial arrangement from a parallel configuration to an angular one. This dimensional change allows the push rod to extend diagonally through the tube, utilizing space more efficiently and reducing the required installation space in the middle region while maintaining manufacturability.
3Strength
If the focusing device is bulky, then the mechanical structure is more robust, but the binocular becomes unwieldy to operate
Solution Approach 1:
The push rod is arranged at an acute angle to the hinge axis, allowing the focusing device to be positioned more compactly within the binocular structure. This angular arrangement enables the mechanical components to be consolidated in a smaller volume, making the binocular more manageable and easier to operate while maintaining structural robustness through optimized force transmission paths.
Data Source
AI summary
The invention relates to a binocular having two tubes, which are connected to one another by means of a hinged bridge pivotable about a hinge axis for adjusting the interpupillary distance, wherein an axially displaceable focusing means is arranged in each one of the two tubes, and wherein a common focusing device for displacing the focusing means is formed, wherein the focusing device comprises a housing and a focusing knob rotatable about a rotational axis and the rotational axis is arranged coaxially to the hinge axis, and wherein the focusing knob is rotationally coupled to a focusing gear and the focusing gear, in each case, comprises a push rod, by means of which the focusing gear is, in each case, coupled to one of the two focusing means, wherein a direction of a back-and-forth displacement of the push rod and a direction of the hinge axis are aligned obliquely with respect to each other.