Stator Fixation Using Bent Wire Rod Elastic Compression
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Solution Overview
Problem
Conventional methods for fixing a stator to a housing, such as using bolts or adhesives, are time-consuming and complex, leading to inefficiencies in assembly and potential adhesive-related issues.
Innovation Solution
A stator fixation structure utilizing a bent wire rod with alternate projections and depressions, compressed between the stator and a cover, generates an elastic force to securely hold the stator in place without the need for bolts or adhesives, allowing for faster and more efficient assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bolts or screws are used to fix the stator to the case, then the stator can be securely fixed, but the assembly time increases and the construction becomes complex
Solution Approach 1:
The invention extracts the fixation function from complex bolt/screw assemblies and implements it through a simple adhesive layer applied directly to the stator's outer peripheral surface, eliminating the need for separate fastening components and reducing assembly steps
Solution Approach 2:
The adhesive layer serves multiple functions simultaneously: it provides fixation, compensates for dimensional variations, and seals the interface between stator and case, merging several functions into a single element that reduces overall assembly complexity
2Reliability
If bolts or screws are used to fix the stator to the case, then the stator can be securely fixed, but the construction becomes complex due to required fixing portions
Solution Approach 1:
The invention removes the need for separate fixing portions, holes, and fastening components by applying adhesive directly to the stator's outer peripheral surface, simplifying the overall construction while maintaining secure fixation
Solution Approach 2:
The adhesive layer provides universal fixation across the entire outer peripheral surface of the stator, eliminating the need for multiple discrete fixing portions and simplifying the construction design
3Device complexity
If adhesive is used to fix the stator to the case, then the assembly process is simplified, but the assembly time increases due to cure time and adhesive handling issues
Solution Approach 1:
The adhesive is applied locally and uniformly to the outer peripheral surface of the stator where it contacts the case, providing efficient fixation without requiring excessive adhesive application or complex handling procedures that would increase assembly time
4Device complexity
If adhesive is used to fix the stator to the case, then the construction is simplified, but the working efficiency decreases due to adhesive adhesion to hands and tools
Solution Approach 1:
The adhesive is applied in a controlled, localized manner to the stator's outer peripheral surface, minimizing the amount of adhesive handling required and reducing the likelihood of adhesion to hands and tools, thereby maintaining working efficiency
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 enables a simple construction with enhanced working efficiency by securely fixing the stator in a shorter time, absorbing dimensional variations, and preventing shifting, while eliminating the need for bolts or adhesives.
Implementation Method 1
a bent wire rod composed of a wire for pressing the stator against the tubular section, the bent wire rod being arranged between a top face of the stator and a rear face of the cover in a compressed state so as to be deformed along an axis of the stator
Data Source
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AI summary
Provided is a stator structure, comprising a stator (13); a housing (3) including a tubular section (11), wherein the stator (13) is accommodated in the tubular section (11); a cover (5) coupled to the housing (3) for blocking an upper opening of the tubular section (11); and a bent wire rod (51) composed of a wire for pressing the stator (13) against the tubular section (11), wherein the bent wire rod (51) is in contact with a top face (38) of the stator (13) and a rear face of the cover (5) in a compressed state so as to be deformed along an axis (R) substantially conforming to the central axis of the tubular section (11). The bent wire rod (51) has a substantially annular shape with an opened portion when seen along the axis (R), and including projections (53a) projecting upward along the axis (R) and depressions (53b) projecting downward along the axis (R). The projections (53a) and depressions (53b) are arranged alternately and successively. The bent wire rod (51) is arranged such that the projections (53a) are in contact with the rear face of the cover (5) and the depressions (53b) are in contact with the top face (38) of the stator (13). The stator (13) includes a stator core (31) and a coil (37) wound around the stator core (31), wherein the bent wire rod (51) contacts a top face (38) of the stator core (31) directly. The stator (13) further includes a restricting element (36) disposed on the top face (38) of the stator core (31) and inside from an outer peripheral edge of the stator core (31) for restricting shifting of the bent wire rod (51) radially and inwardly.