Magnetic Handle Plug for Fast Racket Weight Balancing

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Solution Overview

Problem

Existing racket sports players face challenges in adjusting the weight and balance of their equipment, which is often time-consuming, inaccurate, and can negatively affect other parameters like grip, with lead-based tape being prone to fall off.

Innovation Solution

A racket design featuring a socket with a first magnetic material in the handle and a plug with a second magnetic material that allows for quick and secure attachment, enabling easy adjustment of weight and balance by switching between plugs of varying weights.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If lead-based tape is used to adjust weight and balance, then weight adjustment is possible, but the adjustment process becomes time-consuming and the tape may fall off

Engineering Contradiction:

Improveweight adjustment capabilityVSAvoidadjustment time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The weight adjustment system is segmented into separate interchangeable plugs that can be independently selected and attached. Each plug contains magnetic material and can be individually weighted, allowing players to quickly swap between different weight configurations without time-consuming application processes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The mechanical attachment system (screws, adhesives, or tape) is replaced with a magnetic field-based attachment system. The magnetic material in the plugs interacts with the magnetic material in the socket to provide secure attachment without requiring mechanical fastening or adhesive application, dramatically reducing adjustment time.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If lead-based tape is used to adjust weight and balance, then weight customization is achieved, but grip quality deteriorates

Engineering Contradiction:

Improveweight customizationVSAvoidgrip quality

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The weight adjustment function is extracted from the grip area and relocated to the socket at the end of the handle. By placing the magnetic plugs in the socket rather than wrapping tape around the grip, the grip surface remains clean and maintains its original friction properties, eliminating the harmful effect on grip quality.

Inventive Principle:

Principle #2Taking out (Extraction)

3Adaptability or versatility

If lead-based tape is used for weight adjustment, then some weight modification is possible, but accuracy is reduced

Engineering Contradiction:

Improveweight modification capabilityVSAvoidweight adjustment accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The weight parameter is precisely controlled by manufacturing plugs with specific, predetermined weights. This allows for accurate weight adjustments in small increments, enabling players to fine-tune the racket's balance with precision that cannot be achieved through manual tape application.

Inventive Principle:

Principle #35Parameter changes

4Reliability

If traditional attachment methods are used for plugs, then secure attachment is achieved, but vibration and rattling occur

Engineering Contradiction:

Improveattachment securityVSAvoidvibration and rattling

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The mechanical contact-based attachment (which creates rigid connections prone to vibration) is replaced with a magnetic field-based attachment. The magnetic force provides a compliant yet secure connection that dampens vibrations and eliminates rattling while maintaining strong attachment security.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 magnetic attachment system provides a secure, vibration-free, and easy way to modify the racket's weight and balance, enhancing user experience and versatility.

Implementation Method 1

The socket comprises a first magnetic material arranged in the socket. The racket further comprises a plug configured to be arranged into the socket. The plug comprises a second magnetic material configured for magnetic attraction to the first magnetic material.

Methodology Applied

Scientific EffectMagnetic attraction: Magnetism

Data Source

PatentUS20260000951A1A racket comprising a socket and a plug

Publication Date: 2026.01.01 STIGA SPORTS

AI summary

A racket (1) is provided. The racket (1) comprises a handle (2) and a blade (3). The handle (2) comprises a socket (5) arranged at an end portion (2′) of the handle (2). The socket (5) extends into the handle (2) along a central longitudinal axis (6) of the racket (1). The socket (5) comprises a first magnetic material (7) arranged in the socket (5). The racket (1) further comprises a plug (8) configured to be arranged into the socket (5). The plug (8) comprises a second magnetic material configured for magnetic attraction to the first magnetic material (7).