Back Knocking Mechanism with Adjustable Force Regulation
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Solution Overview
Problem
Existing back knocking mechanisms are large in size, offer poor knocking comfort, and are inconvenient to regulate knocking force, failing to effectively simulate the therapeutic benefits of manual fist knocking on the back.
Innovation Solution
A compact back knocking device incorporating a knocking force regulating motor, deceleration devices, a worm, turbine, volute spring, and a system of gears and discs that utilize a sliding rod mechanism to store and release elastic energy for controlled and continuous knocking, allowing for adjustable force and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional back knocking mechanisms (tread driven, pendulum, motor driven crank-rocker, motor driven pendulum cam) are used, then knocking function is provided, but the device becomes large in size
Solution Approach 1:
The patent employs nested structural design where the knocking mechanism components are integrated within a compact stander structure. The transmission shaft, knocking arm, and knocking head are arranged in a nested configuration that minimizes the overall device volume while maintaining the knocking function.
Solution Approach 2:
The patent introduces a dynamic regulation mechanism allowing the knocking force to be adjusted during operation. The knocking force regulating motor enables real-time modification of the knocking parameters, making the device adaptable to different user needs and improving comfort within a compact form factor.
2Ease of operation
If traditional back knocking mechanisms are used, then knocking function is provided, but regulation of knocking force is inconvenient
Solution Approach 1:
The patent implements parameter regulation through the knocking force regulating motor which can adjust the knocking force magnitude. This allows the device to change operational parameters (knocking force) without requiring complex mechanical reconfiguration, simplifying the regulation process while maintaining adaptability.
Solution Approach 2:
The knocking force regulating mechanism serves multiple functions: it controls the knocking force magnitude, regulates the intensity of treatment, and adapts to different user requirements. This multi-functionality is achieved through a relatively simple motor-controlled system rather than multiple separate adjustment mechanisms.
3Volume of moving object
If compact design is implemented, then device size is reduced, but knocking comfort deteriorates
Solution Approach 1:
The patent compensates for the limitations of compact design by introducing dynamic regulation capabilities. The knocking force regulating motor allows real-time adjustment of knocking parameters, ensuring comfortable and effective treatment despite the reduced device size. This dynamic adaptability maintains reliability while achieving compactness.
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 device is compact, stable, safe, and comfortable to use, enabling effective regulation of knocking force and promoting blood circulation, muscle relaxation, and pain relief with continuous and controlled therapeutic impacts.
Implementation Method 1
the elastic potential energy in the volute spring is released, driving the transmission shaft to move clockwise and driving the knocking arm to swing
Implementation Method 2
the knocking force regulating motor is connected to one end of the knocking force regulating deceleration device, the other end of the knocking force regulating deceleration device is connected to the worm, the worm is engaged with the turbine
Implementation Method 3
the small gear is engaged with the large gear, the large gear is in revolute pair connection with the transmission shaft, the convex disc is fixed on the large gear
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
A back knocking mechanism comprises a stander (1), a knocking force regulating motor (2), a knocking force regulating deceleration device (3), a worm (4), a main motor (5), a main motor deceleration device (6), a small gear (7), a convex disc (8), a slide rod (9), a concave disc (10), a transitional disc (11), a large gear (12), a knocking head (13), a knocking arm (14), a turbine (15), a transmission shaft (16) and a volute spring (17). The knocking force regulating motor (2) drives, through the knocking force regulating deceleration device (3), the worm (4) and the turbine (15), the volute spring (17) to move relative to the transmission shaft (16) to regulate a knocking force; and the main motor (5) converts continuous motion of the main motor (5) into swinging of the transmission shaft (16), through the main motor deceleration device (6), the small gear (7), the large gear (12), the convex disc (8), the slide rod (9), the transitional disc (11) and the concave disc (10). Also disclosed is a knocking method. The back knocking mechanism is small in size, and safe and comfortable to use.