Turnstile Rotation Device with Modular Locking and Buffering
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Solution Overview
Problem
Conventional turnstiles lack operational modes to meet diverse user needs, such as varying access control requirements and safety features.
Innovation Solution
A rotation device for turnstiles comprising a base seat, an axle unit, a lock unit, a restoring unit, a buffer unit, and an overload protection unit, which allows for switching between closing, locking, and opening states, ensuring user safety and access control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional turnstile is used, then the structure is simple, but it lacks various operation modes to meet actual needs
Solution Approach 1:
The turnstile is divided into independent functional modules: barrier module, driving module, locking module, restoring module, buffer module, and overload protection module. Each module performs a specific function, allowing the system to achieve multiple operation modes through module combination while keeping individual modules relatively simple in structure.
Solution Approach 2:
The driving module serves multiple functions: it can drive the barrier to rotate for normal passage control, drive the barrier to rotate to a predetermined position for special access, and work with the locking module to maintain locked positions. This multi-functionality provides various operation modes without requiring separate mechanisms for each mode.
2Productivity
If the barrier rotates quickly, then passage efficiency is high, but user safety is compromised
Solution Approach 1:
The buffer module includes a buffer arm that can rotate between a buffer position (extending toward the barrier) and a retracted position. During barrier rotation, the buffer arm dynamically adjusts to slow down the barrier's rotational speed, reducing the risk of injury while maintaining efficient passage when not in use.
Solution Approach 2:
The buffer module is positioned to extend toward the barrier before rotation occurs, creating a cushioning effect that slows down the barrier's movement. This preemptive buffering measure prevents sudden impacts and ensures user safety during the rotation process.
3Reliability
If the barrier is locked in position, then access control is enhanced, but the structure becomes more complex
Solution Approach 1:
The locking function is extracted into a separate, dedicated locking module that includes a lock arm and lock groove. The lock arm can selectively engage with the lock groove on the barrier to prevent rotation. This separation of locking function simplifies the overall design by isolating the locking mechanism from the driving mechanism.
Solution Approach 2:
The lock arm acts as an intermediary between the locking control system and the barrier. It translates control signals into physical locking action by engaging or disengaging from the lock groove, providing a simple yet effective locking mechanism that enhances access control reliability.
4Reliability
If overload protection is added, then component damage is prevented, but device complexity increases
Solution Approach 1:
The overload protection module includes an overload protection arm that automatically detects excessive force on the barrier and triggers a release mechanism. When overload occurs, the system self-activates to disengage the locking mechanism and allow the barrier to move freely, preventing component damage without requiring external intervention or complex control systems.
Data Source
AI summary
A rotation device includes a base seat, an axle unit and a lock unit. The axle unit extends into the base seat. The lock unit includes a lock plate that is sleeved on the axle unit, and a lock member that is disposed on the base seat. The lock plate is formed with a first lock groove. The lock member has a lock portion that is operable to move into the first lock groove. The lock plate is locked by the lock portion of the lock member when the lock portion moves into the first lock groove, so that the axle unit and the lock plate are not rotatable relative to the base seat.