Compass Conical Pivot Bearing Tilt Compensation
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Solution Overview
Problem
Existing compass technologies face challenges in manufacturing complexity and cost efficiency, particularly in producing tilt-compensating and inclination-compensating indicator devices that can handle significant tilting tolerances and maintain performance with less expensive materials.
Innovation Solution
A device for a compass featuring a magnetic field detection means mounted on a conical pivot bearing, with a direction indicator device comprising an elongate plate supported by forks that allow pivoting, and incorporating a neodymium magnet and spacer elements for alignment and tilting compensation, enabling oblique alignment and reducing manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex tilt-compensating indicator devices are manufactured using conventional methods, then manufacturing precision and reliability are maintained, but manufacturing complexity and cost increase
Solution Approach 1:
The indicator device is divided into separate functional components: a magnetic field detection means mounted on a conical pivot bearing for tilt-compensation, and a direction indicator device with an elongate plate supported by forks. This segmentation allows each component to be manufactured and assembled independently, reducing overall manufacturing complexity while maintaining reliability.
Solution Approach 2:
Instead of mounting the indicator device on a fixed axis and compensating for tilt through complex mechanisms, the patent inverts the approach by mounting the magnetic field detection means on a conical pivot bearing that allows the detection means to tilt freely while the indicator device remains relatively stable. This inversion simplifies the overall mechanism.
2Manufacturing precision
If expensive materials are used in compass manufacturing, then manufacturing precision and durability are improved, but production cost increases
Solution Approach 1:
Spacer elements are introduced as intermediary components between the magnetic field detection means and the direction indicator device. These spacers provide precise alignment and spacing without requiring expensive precision machining of the main components, thereby maintaining manufacturing precision while reducing production costs.
Solution Approach 2:
The patent employs a conical pivot bearing with specific geometric parameters that allow for tolerance compensation. By carefully selecting the cone angle and dimensions, the system achieves precise alignment functionality while accommodating variations in manufacturing tolerances, reducing the need for expensive precision materials and machining.
3Measurement precision
If tight tolerances are specified for tilt-compensation mechanisms, then measurement precision is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The conical pivot bearing is designed with specific geometric parameters (cone angle, radius ratios) that inherently compensate for tilt variations. This parameter optimization allows the system to maintain high direction detection accuracy while accommodating broader manufacturing tolerances in the actual production of the bearing components.
Solution Approach 2:
The patent combines different materials with complementary properties: the conical pivot bearing uses materials with appropriate friction characteristics for smooth tilting motion, while spacer elements use rigid materials for precise positioning. This composite material approach achieves measurement precision without requiring ultra-precise manufacturing of individual components.
4Adaptability or versatility
If conventional indicator device structures are used, then ease of manufacture is maintained, but tilting capabilities and adaptability are limited
Solution Approach 1:
The indicator device incorporates dynamic elements including the conical pivot bearing that allows the magnetic field detection means to tilt dynamically in response to compass orientation changes. The fork-supported elongate plate provides controlled pivoting motion. These dynamic features enhance tilting capability while maintaining manufacturing simplicity through standard bearing and linkage designs.
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 solution simplifies manufacturing, reduces production costs, and allows for greater tolerances, enabling the use of less expensive materials while maintaining performance and allowing for industrial-scale production of compasses with improved tilting capabilities.
Implementation Method 1
a magnetic field detection means which is mounted on a conical pivot bearing and is located in a housing of the compass
Implementation Method 2
mounted on a conical pivot bearing... capable of rotating in at least a plane which is perpendicular to the direction of the shaft
Data Source
AI summary
According to an example aspect of the present invention, there is provided a device for a compass, the device comprising a support comprising a magnetic field detection means being mounted via a conical pivot bearing on a tip of a shaft, wherein the detection means is capable of rotating in at least a plane which is perpendicular to the direction of the shaft, a direction indicator device connected to the magnetic field detection means, and wherein the support comprises an upper portion, a middle portion and a lower portion, the direction indicator device comprises an elongate plate with a direction indicator, wherein the middle portion of said support extends through an opening in the plate, the upper portion of said support comprises opposite first members extending over the top surface of said plate, and the lower portion of said support comprises opposite second members extending under the bottom surface of said plate, and said first and second members are vertically and pairwise aligned to form a first fork and a second fork for supporting the plate.