Circular Saw Blower Nozzle Orientation for Chip Clearance
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Solution Overview
Problem
Conventional portable cutting devices have blower mechanisms that are either fixed at a predetermined angle or have nozzles oriented towards the cutting region, limiting their versatility in removing cutting chips effectively, especially when working with materials like siding boards or plasterboards that produce fine chips.
Innovation Solution
A portable cutting device with a blower mechanism that includes an air outlet with an orientation change mechanism, allowing the direction of air blown out to be adjusted based on the working conditions, such as horizontally or upwardly to prevent chips from disturbing the user's line of sight or accumulating in specific areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the blower mechanism has a fixed nozzle orientation toward the cutting region, then cutting chips can be blown away from the cutting area, but the mechanism cannot effectively remove chips floating in front of the user's eyes or adapt to different working conditions
Solution Approach 1:
The blower mechanism incorporates a movable nozzle that can change its orientation dynamically. The nozzle is configured to be movable relative to the cutting device main body, allowing it to adjust its blowing direction adaptively. This dynamic capability enables the blower to effectively remove cutting chips in various directions, including horizontally and upwardly, without requiring multiple fixed nozzles or complex mechanical structures.
Solution Approach 2:
The single movable nozzle serves multiple functions by being able to orient in different directions. It can blow chips away from the cutting area, clear chips floating in front of the user's eyes, and adapt to different working conditions. This multi-functionality is achieved through the movable configuration that allows directional adjustment, eliminating the need for separate nozzles for different purposes.
2Ease of operation
If the air outlet is fixed at a predetermined angle, then the blower mechanism structure is simple, but it cannot blow away cutting chips floating in front of the user's eyes or adapt to different working conditions
Solution Approach 1:
The air outlet (nozzle) is designed to be movable relative to the cutting device main body, enabling it to change its orientation dynamically. This allows the operator to direct the air flow toward different areas, such as horizontally to clear chips from the user's line of sight or upwardly to prevent chip accumulation, without requiring a complex multi-nozzle system.
Solution Approach 2:
The nozzle is configured to be movable in multiple directions, adding a dimensional aspect to the air flow direction. This enables the blower mechanism to address chip removal in three-dimensional space, including horizontal and upward directions, enhancing operational effectiveness without significantly increasing structural complexity.
3Object-affected harmful factors
If the blower mechanism directs air horizontally or upwardly, then cutting chips floating in front of the user's eyes can be blown away, but the mechanism cannot effectively blow chips away from the cutting area
Solution Approach 1:
The movable nozzle configuration allows the air outlet direction to be dynamically adjusted based on the specific need. When chips are floating in front of the user's eyes, the nozzle can be oriented horizontally or upwardly to clear them. When chips need to be removed from the cutting area, the nozzle direction can be adjusted accordingly, providing versatile chip removal capability.
Solution Approach 2:
The orientation parameter of the air outlet is made variable through the movable nozzle design. By changing the orientation parameter (direction of air flow), the blower mechanism can adapt to different chip removal scenarios, whether clearing chips from the user's line of sight or removing chips from the cutting area, thereby eliminating the traditional contradiction.
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 the operational efficiency and work environment by effectively removing chips from the cutting area and preventing them from interfering with the user's vision, improving precision and safety during cutting operations.
Implementation Method 1
a fan driven by the electric motor. The fan generates the air flow to guide the air to the electric motor for cooling said motor
Implementation Method 2
a blower mechanism configured to blow the air out of the cutting device main body generated by the fan so as to blow the cutting chips away
Data Source
AI summary
A dust-proof circular saw includes a base placed on a workpiece, a circular saw main body supported on an upper surface side of the base and equipped with an electric motor, and a saw blade driven by the electric motor extending downwardly from the base. The dust-proof circular saw further includes a cooling fan driven by the electric motor to guide air to the electric motor for cooling the electric motor, as well as to a blower mechanism. The blower mechanism blows the cutting chips away by blowing the air generated by the fan out of the circular saw main body in a user-adjustable direction. The blower mechanism has an air outlet configured to blow out the air, and an orientation change mechanism capable of changing the orientation of the air outlet.