Description

INGCO S-JS-BRH-JS5708 Brush Holder

The INGCO S-JS-BRH-JS5708 Brush Holder plays a vital role in bridging the gap between the electrical supply and the motor, allowing it to function. Here’s a detailed breakdown:

Description:

The carbon brush holder is a small housing typically made of plastic  insulated material. Its primary function is to:

• Securely hold the carbon brushes
• Position them against the commutator of the jigsaw’s motor
• Maintain electrical continuity between the brushes and the motor circuit

Components:

• Main Body: Provides structural support and insulation to prevent electrical shorts.
• Carbon Brushes: Consumable components made of conductive material ( graphite) that make frictional contact with the commutator.
• Spring Contacts: Metal springs that exert constant pressure on the carbon brushes, ensuring good electrical contact with the commutator.
• Brush Terminals: Electrical connectors that attach the carbon brushes to the jigsaw’s motor circuit.
•  Dust Cover: The brush holder has a dust cover to protect the brushes and contacts from dust and debris that could hinder performance.

How it Works:

1. Electrical Connection: The carbon brushes are connected to the jigsaw’s electrical circuit through the brush terminals.
2. Spring-loaded Contact: The spring contacts within the holder continuously press the carbon brushes against the commutator.
3. Friction with Commutator: As the motor runs, the commutator rotates. The carbon brushes, held by the spring contacts, make sliding contact with the commutator’s surface.
4. Current Transfer: This contact transfers electrical current from the brushes to the commutator. The commutator then transmits the current to the motor windings, creating the magnetic field that drives motor rotation.

Importance:

• Efficient Power Transfer: The carbon brush holder ensures proper contact between the brushes and commutator for efficient flow of electrical current to the motor windings.
• Brush Wear and Replacement: Carbon brushes wear down over time due to friction. The holder allows for easy replacement of worn brushes to maintain optimal motor performance and prevent damage to the commutator.

Uses and Applications:

The carbon brush holder is an essential component within a jigsaw, enabling its motor to function:

• Powering the Jigsaw: It facilitates the transfer of electrical current to the motor windings, allowing the jigsaw to operate and provide cutting power.
• Maintaining Performance: A properly functioning brush holder ensures good electrical contact and allows for brush replacement, contributing to the overall performance and lifespan of the jigsaw.

Signs of a Faulty Carbon Brush Holder:

• Reduced Power: If the jigsaw experiences a noticeable lack of power, it could indicate worn brushes or issues with the brush holder not maintaining proper contact.
• Sparking: Excessive sparking during operation might signify worn brushes or a problem with the brush holder not maintaining proper contact.