Baby Buggy Rocking Mechanism With Vibration-Isolated Motor Mount
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Solution Overview
Problem
Existing solutions for automatic rocking of baby buggies are impractical, costly, noisy, require frequent recharging, and fail to provide a long-lasting, effective, and quiet rocking motion that can be easily installed on various types of buggies.
Innovation Solution
A compact device with an electric motor driving an asymmetrical weight around an axle, using a flexible joint to dampen motor noise, and a ratchet strap buckle system for secure fastening, combined with vibration-dampening covers and a low-cost motor, allowing for a quiet, long-lasting, and efficient rocking motion that can be automatically triggered by sound and movement sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If an electric motor is used to drive the rocking mechanism, then the rocking movement can be automated, but the motor generates noise and vibrations that disturb the child and surrounding environment
Solution Approach 1:
The patent extracts the harmful noise-generating components (motor and drive gear) from the housing that contacts the buggy handle. By separating the motor assembly from the housing, the noise source is isolated and can be dampened independently without affecting the rocking function.
Solution Approach 2:
The patent introduces an elastic pillow as an intermediary element between the motor assembly and the housing. This elastic material absorbs and dampens vibrations and noise from the motor, preventing them from being transmitted to the housing and subsequently to the buggy handle where they would disturb the child.
2Object-generated harmful factors
If elastic mounting is used to dampen motor noise, then noise transmission is reduced, but the housing becomes flexible which reduces the effectiveness of vibration transmission to the buggy
Solution Approach 1:
The patent extracts the motor assembly from the housing structure, allowing the housing to remain rigid for effective vibration transmission while the motor is mounted separately on elastic elements. This separation enables the housing to maintain its structural integrity for transmitting rocking movements to the buggy without being compromised by elastic mounting materials.
3Reliability
If a rigid housing is used to effectively transmit vibrations to the buggy, then rocking effectiveness is improved, but all motor noise is transmitted to the housing and handle
Solution Approach 1:
The patent extracts the motor assembly from the housing, allowing the housing to remain rigid for effective rocking transmission while the motor is positioned separately. This spatial separation enables the housing to efficiently transmit vibrations to the buggy without being a conduit for motor noise.
Solution Approach 2:
The patent introduces elastic mounting elements as intermediaries between the motor and the housing. These elastic elements selectively filter out high-frequency noise vibrations while allowing the lower-frequency rocking vibrations to pass through the rigid housing to the buggy, thus maintaining rocking effectiveness while reducing noise transmission.
4Volume of moving object
If electromagnetic principles are used for compact design, then the device size is reduced, but energy consumption increases requiring frequent recharging
Solution Approach 1:
The patent replaces electromagnetic actuation with a mechanical oscillating weight system driven by a low-power motor. The oscillating weight generates the rocking motion through mechanical imbalance, which requires significantly less energy than electromagnetic actuation, thereby extending battery life while maintaining a compact form factor.
5Adaptability or versatility
If straps and burr fasteners are used for fastening, then the device can be attached to various buggies, but the straps must be tightened hard and retightened regularly to maintain effectiveness
Solution Approach 1:
The patent uses an elastic connection element that dynamically adapts to the geometry of the buggy handle. The elastic material provides continuous pressure and maintains a tight connection without requiring manual tightening, as it automatically compensates for any loosening or dimensional variations in the handle.
Solution Approach 2:
The patent changes the fastening mechanism from rigid straps requiring manual adjustment to an elastic element that dynamically changes its physical parameters (pressure, shape) to maintain optimal connection. This elastic element can deform and adapt to different handle geometries while maintaining sufficient friction and pressure for effective vibration transmission.
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 solution provides a practical, quiet, and effective rocking motion that is easy to install on all types of baby buggies, with low power consumption, long service life, and a secure fastening system, while minimizing noise and wear, and can be integrated with smartphone communication for monitoring the child's condition.
Implementation Method 1
an electromotor driving an asymmetrical weight around an axle which creates a rocking movement
Implementation Method 2
an electromotor driving an asymmetrical weight around an axle which creates a rocking movement
Implementation Method 3
The connection between motor and weight passes through a flexible joint ensuring that motor sound is not amplified
Implementation Method 4
The connection between motor and weight passes through a flexible joint
Implementation Method 5
fastened to a vibration dampening connecting element
Implementation Method 6
vibration dampening connecting element
Data Source
AI summary
A rocking device provided with a fastening means (9) for mounting to for example a baby buggy to create an automatic rocking movement of the baby buggy. It comprises a rotating, asymmetrical weight (14) driven by an electric moto (24). The motor and weight are suspended in a rigid fastening bracket. The fastening bracket (13) is fastened to a first side of a vibration dampening connection element (3) of an at least partly soft material. The fastening means is fastened to the other side of the vibration dampening connection element (3), such that the movement of the weight is transmitted through the fastening bracket (13), via the vibration dampening connection element (3) and the fastening device, to the baby buggy. The fastening bracket with motor a weight is enclosed by an outer cover (1, 2) which is not in contact with the fastening bracket, motor or weight. The outer cover is fastened to the vibration dampening connection element (3), such that vibrations from the motor and the weight are not transmitted to the outer cover.