What is the hold down device in a car clutch?

The clutch composition is composed of a three-piece clutch plate pressure plate and a release bearing, then the hold-down device you said is the release bearing pressure plate, which is the pressure clutch plate.

When the driven disc is subjected to torque.

, the torque is transmitted from the friction lining to the driven disc steel plate, and then transmitted to the driven disc hub through the damping spring, at this time the spring will be compressed, absorbing the torsional vibration from the engine.

The hold-down mechanism is a diaphragm spring, which has a number of grooves in the radial direction to form an elastic lever. There are round holes at the end of the grooving, through which the fixing rivets are passed and fixed to the clutch cover. The two sides of the diaphragm spring are equipped with steel wire support rings, and these two steel wire support rings are the fulcrum of the diaphragm spring when working.

The outer edge of the diaphragm spring is connected to the pressure plate by a separating hook.

The clutch is mounted on the engine and transmission.

It is the assembly that is directly connected with the engine in the drive train of the car. Usually the clutch is associated with the engine crankshaft.

The flywheel group is installed together and is the component that cuts off and transmits power between the engine and the drive train of the car. During the entire process from the start of the car to normal driving, the driver can manipulate the clutch as needed to temporarily separate or gradually engage the engine and the drive train to cut off or transfer the power output from the engine to the drive train.

Its function is to make the engine and transmission gradually engaged, so as to ensure a smooth start of the car; Temporarily cut off the connection between the engine and the transmission in order to facilitate gear shifting and reduce shock when shifting; When the car brakes urgently.

It can play a detaching role to prevent overload of transmission and other transmission systems, so as to play a certain protective role.

The clutch needs to be switched between disengagement and bonding, so the spring is an essential element.

Hold-down device: acting on the pressure plate, so that the driven plate in the middle of the flywheel and the pressure plate is compressed, and there are two forms: diaphragm spring and coil spring

The clutch compression and fiber tightening mechanism refers to the mechanism used in the clutch system to compress the friction pair between the clutch friction plate and the flywheel. The function of the clutch hold-down mechanism is to realize the connection and separation of the clutch by pressing the clutch friction plate, so as to control the power transmission. The clutch hold-down mechanism generally includes components such as a hold-down spring and a pressure plate.

1.Press the spring.

The hold-down spring is one of the main components of the clutch hold-down mechanism. Its function is to apply force to the clutch pressure plate to produce friction between the clutch friction plate and the flywheel, so as to realize the coupling and separation of the clutch. Compression springs are usually made of high-strength steel wire, which has a certain elasticity and ductility, which can absorb and reduce vibration and shock in the clutch system to a certain extent.

There are many types of compression springs, and the common bright imitation delayed compression springs include coil springs, leaf springs and tapered springs. Among them, tapered springs have the advantages of simple structure, small size and light weight, so they are widely used in various clutch systems.

2.Pressure plate. The pressure plate is another important part of the clutch hold-down mechanism, and its function is to achieve the coupling and separation of the clutch by pressing the clutch friction plate to generate friction between it and the flywheel.

The pressure plate is usually made of high-strength steel plate, which has a certain stiffness and strength to withstand the pressure and impact in the clutch system.

There are also many types of pressure plates, and there are two common types: single disc type and double disc type. Among them, the double-disc pressure plate has the advantages of compact structure and high transmission efficiency, so it has been widely used in most automotive clutch systems.

The clutch hold-down mechanism is a very important part of the clutch system, which realizes the connection and separation of the clutch through the compression of the clutch friction plate, which plays a vital role in ensuring the normal driving of the car. Common clutch hold-down mechanisms include compression springs and pressure plates and other components, different components have different structures and characteristics, which can be selected and designed according to specific application scenarios.

Diaphragm spring: 1. Simple structure, small size, light operation, automatic adjustment of compression force, and uniform pressure distribution.

2. When the diaphragm spring is deformed to a certain extent, the elastic force is the largest, and then the deformation continues, the elastic force will become smaller, so the clutch pedal becomes lighter and lighter.

3. Diaphragm spring clutch, with the wear and thinning of the friction plate, the spring compression force will gradually increase.