Endoscope Knob Brake Assembly With Direct Sliding Force Transfer
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Solution Overview
Problem
Existing endoscope braking systems are complex, expensive, and inconvenient to assemble, with indirect braking force transmission leading to a poor braking effect.
Innovation Solution
A simplified endoscope knob brake device featuring a fixed frame with sliding grooves and brake members, where the brake knob rotates to directly push brake members into an operating cavity to hold the knob mechanism, ensuring direct and effective braking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a brake device is disposed inside the handle to prevent the insertion portion from coming out of the patient's body, then safety is improved, but the handle size increases and operability deteriorates
Solution Approach 1:
The brake device is nested within the handle structure, with the brake lever positioned in the curvature of the operation lever. This nesting arrangement allows the brake device to be integrated into the existing handle geometry without significantly increasing the overall handle size, thus maintaining operability while providing safety functionality.
Solution Approach 2:
The brake lever utilizes the curved spatial dimension created by the operation lever's arc-shaped path. By positioning the brake lever to rotate along with the operation lever's curvature, the design transforms a potential space-consuming component into a space-efficient solution that leverages the existing operational movement dimension.
2Reliability
If a brake device is disposed inside the handle, then safety is improved, but the number of parts increases and device complexity increases
Solution Approach 1:
The brake device is merged with the operation lever assembly, where the brake lever is integrated into the curvature of the operation lever. This merging reduces the number of separate components by combining the brake function with the existing operational mechanism, thereby simplifying the overall device structure while maintaining safety functionality.
Solution Approach 2:
The operation lever serves multiple functions: it controls the insertion portion's movement and simultaneously drives the brake lever to engage or disengage the brake. This multi-functionality reduces the need for separate control mechanisms, decreasing the total number of parts while providing both operational control and safety braking functions.
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 new design provides a simpler assembly process, improved braking efficiency, and enhanced braking force transmission, resulting in a more stable and effective braking mechanism.
Implementation Method 1
the brake lever (333) is configured to rotate along with the operation lever (322) so as to press the brake pad (332) onto the brake disc (331)
Data Source
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AI summary
An endoscope knob brake device (100), an endoscope handle, and an endoscope. The endoscope knob brake device (100) includes a fixed frame (110), brake members (120) and a brake knob (130). The fixed frame (110) includes an operating cavity (111) configured for a knob mechanism (300) to pass through. At least two sliding grooves (112) are arranged at intervals around the operating cavity (111). The brake members (120) are slidably installed in the sliding grooves (112) in a one-to-one correspondence. The brake knob (130) is sleeved over the fixed frame (110). At least two pushing portions (133) are disposed at intervals on an inner wall of the brake knob (130). When the brake knob (130) is rotated to a preset angle, the pushing portions (133) push, in a one-to-one correspondence, the brake members (120) to move toward the operating cavity (111) to hold the knob mechanism (300) tightly. The knob brake device (100) has a simple structure, directly and effectively transmission of the brake force, and has a good braking effect. During assembly, the brake members (120) only need to be slidably arranged in the sliding grooves (112), thereby effectively simplifying an assembly procedure, and facilitating an improvement in the assembly efficiency.