What is an automatic glass lifting clamp?

The fundamentals

Many cars now forego manual lifting and lowering of door and window glass (closing and opening) in favor of electric lifting and lowering of the button type, i.e., employing electric glass lifters.

An electric glass lifter for vehicles is made up of the following parts: an electric motor, a reducer, a guide rope, a guide plate, and a glass installation bracket. There are three types of electric glass lifters because the guiding rope material or production process differs, which is categorized into rope wheel types, flexible shaft types, and plastic belt types. The first two use steel wire rope as the guide rope, while the third uses a plastic belt as the guide rope.

As an illustration, consider the widely used rope wheel-type electric glass lifter. It is made up of a steel wire rope, a guide plate, an electric motor, a reducer, a glass installation bracket, and other components. The steel wire rope guide plate and glass guide slot should be parallel while installing door and window glass fastened to the glass installation bracket. Turn on the motor, which is powered by the output of the motor reducer, and pull the wire rope to move the glass installation bracket, which causes the door and window glass to move linearly up or down. A plastic belt with holes that are used to move and position the plastic belt to regulate the lift of the door and window glass guides the plastic belt-style electric glass lifter. Click here for Full-Automatic Glass Lifting Clamp.

Working Theory

The motor and reducer are crucial components of an electric glass lifter's framework. These two are combined into one, with the motor using a reversible permanent magnet DC motor. The motor also contains two sets of magnetic field coils that are wound in various directions. Through the use of a switch, the motor can rotate in both directions, controlling the rise and fall of the door and window glass. A double switch button that has three operating states, including up, down, and off, and automatically pauses at the "off" position when the switch is not moved, controls the motor. A master switch (central control) and a sub-switch are both included in the operating circuit, and the two lines are connected in parallel. The driver operates the main switch, which opens and closes all the doors and windows, while the passengers operate the sub-switch in each door handle, which opens and closes the glass of each door and window. The process is highly practical.

Technical specifications

The lift should be constructed following the product designs and technical papers that have been approved by the established procedures and meet the requirements of this standard.

1. Aesthetics

Metal components for lifters must either be corrosion-resistant or have an anti-corrosion treatment.

Lifter plastic pieces should have smooth surfaces without bubbles or deformation that might interfere with their use.

There shouldn't be any noticeable flaws in the metal components of the chemical treatment and coating layers; they should be homogeneous.

2. Performance standards

Working voltage: The lifter should operate without anomalous noise or stalling between 11 and 15 volts.

Current characteristics: The lifter's working current should not exceed 15 A, and the blocking current shouldn't exceed 28 A.

Closing force: The lifter's closing force should adhere to the specifications listed in the product drawings.