Shaver Transmission Mechanism Using Ramp Sliding Element
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Solution Overview
Problem
Existing electric shaving apparatuses have complex and costly transmission mechanisms for the long hair cutter, which are difficult to manufacture and prone to functional reliability issues.
Innovation Solution
A simple and stable transmission mechanism using an adjustable sliding element with a ramp on the shaver casing, allowing direct displacement of the long hair cutter, which doubles the distance traveled by the sliding switch, enhancing operability and reducing component complexity and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If complex transmission mechanisms (gear racks, multi-arm levers, coupling mechanisms) are used to increase the displacement path of the long hair cutter, then the operability is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The transmission mechanism is segmented into two independent sliding elements instead of using a complex integrated system. The first sliding element translates linear motion to diagonal motion, and the second sliding element translates diagonal motion to perpendicular motion. This segmentation simplifies each individual component while achieving the desired complex motion transformation.
Solution Approach 2:
The mechanism uses dimensional transformation by introducing diagonal motion as an intermediate step. The first sliding element converts one-dimensional linear motion into two-dimensional diagonal motion, and the second sliding element converts the diagonal motion into perpendicular motion in another dimension. This dimensional approach simplifies the overall mechanism compared to traditional multi-component transmission systems.
2Ease of operation
If multiple interconnected lever arms and gear components are used, then the displacement path is increased, but the functional reliability decreases due to more components
Solution Approach 1:
The transmission function is divided into two independent sliding elements rather than using multiple interconnected lever arms. Each sliding element is a simple, single-component device with no moving parts other than the sliding surfaces themselves. This segmentation eliminates the reliability issues associated with multiple interconnected components while maintaining the displacement path multiplication function.
Solution Approach 2:
The invention extracts the essential function of motion transformation from complex mechanical transmissions (gears, levers, couplings) and implements it using simple sliding surfaces. By taking out the core functionality and removing unnecessary complex components, the system achieves both increased displacement path and improved reliability through fewer parts.
3Ease of operation
If traditional transmission mechanisms with many components are used, then the displacement path is increased, but the manufacturing cost increases
Solution Approach 1:
The transmission mechanism is divided into two simple sliding elements that can be manufactured independently using standard machining processes. Each element requires only sliding surfaces and guide paths, eliminating the need for complex gear cutting, lever fabrication, and assembly operations. This segmentation dramatically reduces manufacturing complexity and cost while maintaining the displacement path multiplication function.
Solution Approach 2:
The invention extracts the essential motion transformation function from expensive, complex transmission components and implements it using simple sliding surfaces. By removing gears, levers, couplings, and other costly components, the system achieves the same functional result at a fraction of the manufacturing cost, making the device more economically viable.
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 the construction and operation of the shaving apparatus, reducing manufacturing costs and improving functional reliability by allowing the long hair cutter to be easily and quickly removed from the casing, enhancing user experience.
Implementation Method 1
an adjustable sliding element with a ramp on the shaver casing, allowing direct displacement of the long hair cutter, which doubles the distance traveled by the sliding switch
Data Source
Figure 1
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AI summary
The invention relates to an electrically operated shaving apparatus (1) having at least one cutting device that can move in or out in a first guide path (19) by means of a sliding switch (9) on a shaver casing (2). The cutting device consists of a blade casing (18) and a long hair cutter (20) on the blade casing (18) that is fed into a second guide path (20) which can be driven by a drive mechanism. Between the shaver casing (2) and the long hair cutter (10) is situated a transmission mechanism (21) that enlarges the displacement path (b) of the long hair cutter (10). According to the invention, the transmission mechanism (21) consists on the one hand of a fixed stop (31) attached to the shaver casing (2) and, on the other hand, to a sliding element (24) that can be slid crosswise to the displacement path (d) of the long hair cutter (10) into a third guide path (22). The sliding element operates in connection with the stop (31) by means of a ramp (26) attached to the sliding element (24) and tilted at an angle alpha vis-a-vis the sliding direction. The sliding element (24) is connected by means of a deflection device (25) to the casing part (17) of the long hair cutter (10). The invention provides for the creation of a transmission mechanism (21) that is very easy to manufacture and has very few components that enables the long hair cutter (10) to be lifted out quickly with little movement on the sliding switch (9).