Elevator Brake Actuator Using Rotary Motor Reset
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Solution Overview
Problem
Existing electromagnetic actuators for elevator systems, particularly those with toggle lever arrangements, are space-consuming and prone to deformation, failing to provide a simple, robust, and space-saving solution for actuating brakes effectively.
Innovation Solution
An electromagnetic actuator design featuring an energy storage device, a holding device, a resetter, and a connector with a rotation arrangement that includes a guide joint, where the resetter comprises a rotary motor to transfer the actuator from the triggering state to the standby state, offering a robust and flexible construction adaptable to spatial conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a toggle lever arrangement is used in the electromagnetic actuator, then the actuator can achieve the required actuating force, but the actuator becomes space-consuming and complex in design
Solution Approach 1:
The patent extracts and eliminates the toggle lever arrangement from the actuator design. By removing this complex mechanical multiplication mechanism, the actuator achieves the required actuating force through a more compact electromagnetic design, directly reducing the volume occupied by moving parts while maintaining the necessary force output for brake actuation.
Solution Approach 2:
The patent replaces the mechanical toggle lever system with an optimized electromagnetic actuation mechanism. This substitution eliminates the need for complex mechanical linkages and lever arms, achieving force multiplication through electromagnetic field interactions instead, thereby significantly reducing the spatial requirements and simplifying the overall actuator design.
2Force
If a toggle lever arrangement is used in the electromagnetic actuator, then the actuator can achieve the required actuating force, but the design becomes complex and prone to deformation
Solution Approach 1:
The patent removes the toggle lever arrangement entirely from the design, eliminating the complex network of interconnected levers and joints. This extraction simplifies the device to its essential components, reducing the number of parts that require precise manufacturing and assembly, thereby lowering design complexity and minimizing deformation risks.
Solution Approach 2:
The patent substitutes the mechanical toggle lever system with a streamlined electromagnetic actuation mechanism. This replacement eliminates complex mechanical linkages and reduces the device to fewer, more robust components that are less susceptible to deformation under operational loads, while still achieving the required actuating force through electromagnetic force generation.
3Ease of operation
If a linear motor is used for the reset device, then the actuator can be reset from triggered state to standby state, but the design requires a guide groove which increases complexity
Solution Approach 1:
The patent extracts and eliminates the guide groove structure from the design. By removing this guiding mechanism, the actuator achieves reset capability through a simpler configuration where the rotary motor directly drives the connector through its rotational motion, eliminating the need for complex guide grooves and reducing overall device complexity.
Solution Approach 2:
The patent replaces the linear motor with guide groove system with a rotary motor configuration. The rotary motor achieves the same reset function by converting rotational motion into the necessary linear displacement of the connector through direct mechanical coupling, eliminating the need for guide grooves and simplifying the overall mechanism.
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 actuator achieves a robust and space-efficient operation by using a rotary motor resetter, which allows for flexible design and reduced susceptibility to deformation, enabling effective braking and release mechanisms within elevator systems.
Implementation Method 1
the holding device comprises an electromagnet (4) and an armature plate (5)
Implementation Method 2
the reset means comprises a rotary motor which is configured to transfer the actuator from the trigger state to the standby state
Data Source
Figure 1a~1b
Figure 2
Figure 3a~3d
AI summary
The present invention relates to an electromechanical actuator (1) for actuating a brake of an elevator installation, said actuator (1) comprising an energy accumulator (2), a holding device (3), a resetting device (6), and a connector (7), wherein the actuator (1) is designed such that, in a ready state (I), the holding device (3) holds the connector (7) against an actuating force (F2) applied by the energy accumulator (2) in a ready position, wherein the holding device (3), in a release state (II), does not hold the connector (7) in the ready position thereof, and the connector (7) is switched into a release position, and, during a retrieval phase (III), the actuator (1) can be switched from the release state (II) into the ready state (I) using the resetting device (6). The invention also relates to an elevator installation comprising a brake and an actuator (1), which cooperates with the brake, in order to decelerate an elevator car which is displaced in an elevator shaft of the elevator installation.