Bidirectional Laser Rangefinder Coaxial Bracket Assembly
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Solution Overview
Problem
Existing bidirectional laser rangefinders face difficulties in coaxial assembly of laser modules, leading to cumbersome and time-consuming assembly processes, resulting in large measurement errors due to the small volume and requirement for precise screw positioning.
Innovation Solution
The design includes a housing assembly with symmetrically arranged first and second brackets and laser emitters, connected via a connecting plate, which are clamped to the housing, simplifying the assembly and ensuring coaxial operation of the split-type laser emitters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If screw positioning is used to assemble laser modules in a small volume rangefinder, then the device can be compact, but the assembly process becomes time-consuming and laborious
Solution Approach 1:
The laser module is divided into separate first and second laser emitters positioned on opposite sides of the housing, each mounted on its own bracket. This segmentation allows independent positioning and simplifies the overall assembly process while maintaining a compact device volume.
Solution Approach 2:
The brackets are pre-formed with specific geometries that match the housing contours, enabling direct placement and securing of laser emitters without complex screw positioning. The brackets are designed to be attached to the housing in advance, streamlining the final assembly operation.
2Measurement precision
If multiple rework is performed to achieve bidirectional laser coaxiality, then measurement precision can be improved, but the assembly process becomes more complex and time-consuming
Solution Approach 1:
The first and second brackets are designed with asymmetric geometries that are mirror images of each other, positioned on opposite sides of the housing. This asymmetric design ensures that the laser emitters are automatically aligned in a coaxial configuration when mounted, eliminating the need for multiple rework operations to achieve coaxiality.
Solution Approach 2:
The coaxial alignment is built into the bracket designs during the preliminary manufacturing stage. The brackets are pre-formed with specific curvatures and dimensions that guarantee proper alignment when assembled, so that coaxiality is achieved automatically without requiring subsequent rework or adjustment operations.
3Volume of moving object
If smaller specification screws are used for positioning components, then the device can maintain a small volume, but the assembly and disassembly process becomes inconvenient and laborious
Solution Approach 1:
The device uses separate bracket components that can be independently attached to the housing, replacing the need for multiple small screws. Each bracket can be secured using larger, more convenient fasteners or even snap-fit mechanisms, making assembly and disassembly easier while maintaining compact device volume.
Solution Approach 2:
The traditional screw-based mechanical fastening system is replaced with alternative joining methods such as snap-fit plastic connections, magnetic attachments, or larger diameter mechanical fasteners. This substitution maintains the compact volume requirement while significantly improving the ease of assembly and disassembly operations.
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 configuration enhances measurement precision and simplifies the assembly process, making it more convenient and efficient compared to existing methods.
Implementation Method 1
A laser rangefinder is an instrument that uses laser to accurately measure a distance of a target. The laser rangefinder emits a very fine laser beam towards the target during it works
Implementation Method 2
a photoelectric element receives a laser beam reflected by the target
Implementation Method 3
a timer measures a time from emission to reception of the laser beam, thereby calculating the distance from an observer to the target
Data Source
AI summary
A bidirectional laser rangefinder includes: a housing assembly; and a bracket assembly, a connecting plate, a first laser emitter, and a second laser emitter disposed in the housing assembly; the bracket assembly includes a first bracket and a second bracket disposed in a mirror image manner along a length direction of the bidirectional laser rangefinder; the first and second laser emitters are disposed on the first and second brackets respectively in a mirror image manner along the length direction of the bidirectional laser rangefinder; upper portions of the first and second brackets are connected to the connecting plate; and widths of the first and second brackets as well as the connecting plate are same as an internal diameter of the housing assembly for clamping. Therefore, a split type laser emitter can be coaxial and measurement precision is improved, which is simple to produce and convenient to assemble.