Lock Connecting Rod Converts Rotation to Linear Motion
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Solution Overview
Problem
Existing locks face challenges in achieving a simple yet highly functional design that effectively converts rotational movements into linear movements without transmitting unwanted lateral forces, which can result in larger angles of rotation or smaller dimensions while maintaining alignment and preventing torsional forces.
Innovation Solution
The lock incorporates a transmission device with a connecting rod that optimally converts rotational movements of the rotary element into linear movements of the sliding element and vice versa, utilizing a spring-loaded mechanism to ensure the rotary element returns to a basic position, thereby preventing lateral torsional forces and allowing for compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional transmission mechanism is used to convert rotational movement to linear movement, then the lock can function, but lateral torsional forces are transmitted to the sliding element during rotation
Solution Approach 1:
The patent introduces a connecting rod as an intermediary element between the rotary element and sliding element. This connecting rod acts as a mediator that converts rotational movement to linear movement while preventing the transmission of lateral torsional forces to the sliding element, thus resolving the contradiction between achieving movement conversion and avoiding harmful force transmission.
2Adaptability or versatility
If larger angles of rotation are achieved, then the lock has greater functionality, but larger lock dimensions are required
Solution Approach 1:
The connecting rod is designed with a specific curved geometry that enables it to accommodate larger rotation angles of the rotary element while maintaining a compact overall lock structure. The curved design of the connecting rod allows it to efficiently transmit motion over a wider angular range without requiring proportionally larger lock dimensions.
3Ease of manufacture
If the lock structure is simplified, then manufacturing is easier, but functionality may be reduced
Solution Approach 1:
The connecting rod serves multiple functions simultaneously: it converts rotational movement to linear movement, prevents transmission of lateral torsional forces, and enables both locking and unlocking operations. This multi-functionality allows the lock to maintain high functional performance while using a relatively simple structure that is easy to manufacture.
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 solution enables larger angles of rotation or smaller lock dimensions without undesired lateral torsional forces, ensuring the door handle remains horizontally aligned and improving the lock's operational efficiency and compactness.
Implementation Method 1
The at least one sliding element is acted upon by a spring, the spring being supported on the one hand on the at least one sliding element and on the other hand directly or indirectly on the lock housing
Implementation Method 2
By means of the spring, the rotary element is acted upon from an actuated position into a basic position via the transmission device
Data Source
Figure 1~2
Figure 1a~2a
Figure 1b~2b
AI summary
A lock is described, wherein the lock comprises a lock housing in which a lock mechanism is mounted. The lock mechanism includes a rotary element, which is rotatably mounted in a pivot bearing within the lock housing, and a sliding element, which is linearly displaceable in a sliding bearing within the lock housing. Furthermore, the lock mechanism includes a transmission device connected to both the rotary element and the sliding element, which transmits the rotary motion of the rotary element to the sliding element and/or the motion of the sliding element to the rotary element. The transmission device includes at least one connecting rod.