Massager Head Connection Structure for High-Frequency Retention
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Solution Overview
Problem
Existing massagers suffer from the issue of massaging heads falling off during high-frequency reciprocating motion due to reliance on silicone rings for fixation, which can loosen over time.
Innovation Solution
The massager incorporates a connecting module with a thread connection between the massaging head and piston, enhanced by a silicone fixing ring for increased friction, and a snap-type connection using positioning pins and a silicone snap ring for stable fixation, along with safety mechanisms like tact switches and magnetic sensors to ensure proper mounting and prevent separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only a silicone ring is used to fix the massaging head to the piston, then the structure is simple and easy to manufacture, but the massaging head is prone to loosen and fall off during high-frequency reciprocating motion
Solution Approach 1:
The connection structure is divided into multiple functional components: the silicone ring for friction fixation, the positioning pin for precise location, and the snap slot for mechanical interlocking. This segmentation allows each component to perform its specific function, with the positioning pin and snap slot working together to prevent the massaging head from loosening during high-frequency reciprocating motion.
Solution Approach 2:
The patent combines multiple fixation mechanisms into a unified connection structure. The silicone ring, positioning pin, and snap slot are merged into a single integrated assembly that attaches the massaging head to the piston. This combination provides both simple friction-based fixation and robust mechanical interlocking, ensuring reliable attachment during operation.
2Ease of operation
If a silicone ring is used for fixation, then the massaging head can be easily attached and detached, but the silicone ring ages and loosens after long period of use
Solution Approach 1:
The positioning pin is pre-installed in the piston, and the snap slot is pre-formed as an integral part of the piston structure. These preliminary actions ensure that when the massaging head is attached, the connection is immediately secure and cannot loosen during use, regardless of the duration of operation.
Solution Approach 2:
The snap slot acts as an intermediary mechanical feature between the positioning pin and the massaging head. It provides a durable mechanical interlocking that supplements the silicone ring's friction-based fixation, preventing aging-related loosening and extending the service life of the connection.
3Strength
If threaded connection is used to attach the massaging head, then the connection strength is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
Instead of using threaded connection throughout the entire massaging head, the patent applies local quality by using a positioning pin and snap slot only at the critical attachment point where the massaging head connects to the piston. This localized approach provides sufficient connection strength without the complexity of threaded mechanisms.
Solution Approach 2:
The positioning pin and snap slot constitute a simple, inexpensive connection mechanism that is easier to manufacture than threaded connections. While individual components like the silicone ring may wear, the overall connection structure remains simple and cost-effective to replace if needed.
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 solutions provide secure attachment of the massaging head to the piston, preventing it from falling off during high-frequency motion and enhancing user safety by ensuring the massager operates only when the head is correctly mounted, thus reducing potential hazards.
Implementation Method 1
friction between the massaging head and the piston is increased by a silicone ring such that the massaging head is fixedly connected to the piston
Implementation Method 2
an annular elastic member sleeves a periphery of the connecting member. When the first connecting portion is mated with the second connecting portion, the annular elastic member is in a damping connection with the piston
Implementation Method 3
magnetic sensors, to securely attach the massaging head to the piston
Data Source
AI summary
A massager is provided in the present disclosure. The massager includes a housing, a piston, a driving mechanism, and a connecting module. The piston is at least partially located in the housing and defines an accommodating hole. The driving mechanism is connected to the piston and configured to cause the piston to reciprocate. The connecting module includes a massaging head. The massaging head is inserted into the accommodating hole. The connecting module is configured to restrain the massaging head from moving out of the accommodating hole and separating from the piston while the piston reciprocates at a speed higher than a predetermined speed. In this way, the problem that the massaging head 10 of the massager is currently prone to fall off during the high-frequency reciprocating motion can be solved.