Bushing Module With Dual Clamps and Sealing Strip

Solution Overview

Problem

Existing protective wire sheaths, whether made of hard plastic or soft rubber, fail to provide adequate waterproofing and tensile strength for lead wires, leading to potential device failure and safety hazards due to poor sealing and easy detachment under external forces.

Innovation Solution

A protective wire assembly comprising a first wire fixing clamp with grooves, a second wire fixing clamp with corresponding grooves, a waterproof sealing strip, and a sealing ring that form a wire accommodating cavity and ensure waterproof sealing between the clamps and the device's wire outlet, enhancing both sealing and tensile strength.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a hard plastic protective wire sheath is used, then the tensile strength of the lead wire is improved, but the waterproof sealing effect deteriorates

Engineering Contradiction:

Improvetensile strength of lead wireVSAvoidwaterproof sealing effect

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The protective wire sheath is divided into multiple segments: a hard plastic portion for tensile protection and a soft rubber portion for waterproof sealing. This segmentation allows each material to perform its optimal function without compromising the other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The protective wire sheath uses a composite structure combining hard plastic and soft rubber materials. The hard plastic provides tensile strength while the soft rubber ensures waterproof sealing, resolving the contradiction between these two requirements.

Inventive Principle:

Principle #40Composite materials

2Reliability

If a soft rubber protective wire sheath is used, then the waterproof sealing effect is improved, but the tensile strength of the lead wire deteriorates

Engineering Contradiction:

Improvewaterproof sealing effectVSAvoidtensile strength of lead wire

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The protective wire sheath is divided into multiple segments: a hard plastic portion for tensile protection and a soft rubber portion for waterproof sealing. This segmentation allows each material to perform its optimal function without compromising the other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The protective wire sheath uses a composite structure combining hard plastic and soft rubber materials. The hard plastic provides tensile strength while the soft rubber ensures waterproof sealing, resolving the contradiction between these two requirements.

Inventive Principle:

Principle #40Composite materials

3Device complexity

If a single-material protective wire sheath is used, then the device complexity is reduced, but the overall performance (waterproofing and tensile strength) deteriorates

Engineering Contradiction:

Improvestructure complexityVSAvoidoverall performance

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The protective wire sheath is divided into multiple segments with different materials and functions, allowing each segment to be optimized for its specific purpose while maintaining relatively simple individual structures.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The protective wire sheath uses a composite structure combining hard plastic and soft rubber materials. The hard plastic provides tensile strength while the soft rubber ensures waterproof sealing, resolving the contradiction between these two requirements.

Inventive Principle:

Principle #40Composite materials

Data Source

PatentEP4120492A1Bushing module and device having lead-out wires

Publication Date: 2023.01.18 FOSHAN WEILING WASHER MOTOR MFG CO LTD

Figure 1~2
Figure 3~4
Figure 5~6

AI summary

The present invention provides a protective wire assembly and a device with lead wire, the protective wire assembly is installed at a wire outlet of the device and comprises: a first wire fixing clamp, a second wire fixing clamp, a waterproof sealing strip, and a waterproof sealing ring. A plurality of first wire fixing grooves are provided on the first wire fixing clamp, the second wire fixing clamp is provided with a second wire fixing groove corresponding to the first wire fixing groove. The first wire fixing groove and the second wire fixing groove cooperating to form a wire accommodating cavity. The waterproof sealing strip is installed between the first wire fixing clamp and the second wire fixing clamp, and intersects with the wire accommodating cavity to form waterproof sealing between the first wire fixing clamp and the second wire fixing clamp. The waterproof sealing ring is sleeved on the outer peripheral surface of the assembly formed by the first wire fixing clamp and the second wire fixing clamp for contacting and sealing with the peripheral wall of the wire outlet. The protective wire assembly provided by the present invention can simultaneously solve the technical problems of the poor waterproof performance of the hard plastic protective wire sheath and the small fastening force of the soft rubber protective wire sheath to the lead wire in the prior art.