RU28900U1 - Electromagnetic clutch for internal combustion engine cooling system - Google Patents

Description

Such a clutch does not provide reliable adhesion of the driving and driven elements as a result of the low elasticity of the coil spring during operation of the device, the driven half coupling in the form of a solid flange. The disadvantage is the design complexity due to the presence of a cylindrical spring between the leading and driven half-couplings, an additional ring and permanent magnets.

The objective of the utility model is to simplify the design and increase the reliability of the coupling.

This is achieved by the fact that in the electromagnetic coupling for the cooling system of the internal combustion engine of the vehicle, comprising a cup-shaped drive coupling half with a pulley, a housing of magnetically conductive material having elements for mounting on a tubular protrusion of the water pump housing, an excitation coil having elements for mounting on the front the cover of the water pump driven by a coupling half, made in the form of a flange with an annular groove and mounted coaxially with the leading coupling half on the output shaft of the water pump and with an axial clearance relative to the leading coupling half, in the annular groove of the flange there are elements for diverting the driven coupling half from the driving coupling half, in contact with its end face, the driving and driven coupling halves are rigidly mounted on one output shaft of the water pump, the driven coupling coupling is mounted on the output shaft of the water pump through bearings and made in the form of a composite flange consisting of a sleeve and a disk rigidly interconnected by at least four spring-loaded radially mounted in the groove of the flange lugs interacting with the end face of the driving coupling half.

The implementation of the driven half coupling in the form of a composite flange simplifies the manufacturing technology of the driven half coupling. The proposed device eliminates the use of a twisted coil spring, which adversely affects the reliability of the coupling. In addition, the proposed coupling used a simple and reliable device for diverting the leading coupling half from the driven without the use of permanent magnets, complicating the design of the coupling.

The essence of the utility model is illustrated by the drawing, which simplifies the coupling, section.

The electromagnetic coupling for the cooling system of an internal combustion engine contains a leading coupling half 1, consisting of two parts: - movable - made in a glass-like shape and combined with a pulley with grooves for V-belts and stationary - in the cavity of a glass-shaped driving half-coupling 1 there is a housing 2 made of magnetically conductive material, motionless mounted on a tubular protrusion of the water pump housing. Inside the housing 2 of magnetically conductive material, an excitation coil 3 mounted on a tubular protrusion of by means of a lock ring. The leading half M / / -f coupling 1 is rigidly mounted on the output shaft 4 of the water pump. The driven coupling half, made in the form of a flange, is installed with an axial clearance а and relative to the driving coupling half 1 on the output shaft 4 of the water pump by means of two bearings 5, the inner cages of which rotate together with the shaft 4 of the water pump and consists of a disk 6 and a sleeve 7, rigidly connected between each other with the help of four stops 8 installed in the annular groove of the driven floor of the coupling, spring-loaded with the help of springs 9. The stops 8 interact with the end face of the drive coupling half 1.

The coupling operates as follows.

When power is applied to the excitation coil 3, its magnetic flux passes through the magnetically conductive body 2 and closes through the leading coupling half 1 and the disk 6, which moves towards the driving coupling half 1 until it is in friction contact. The master and driven half couplings rotate as a whole

When the coil 3 is disconnected from the power source (not shown), the disk 6 moves away from the leading coupling half 1 under the action of springs 9, by means of which the stops 8 come into contact with the end face of the driving coupling half and the transmission of rotation from the leading coupling coupling to the driven one is stopped.

Claims (1)

An electromagnetic clutch for a cooling system of an internal combustion engine of a vehicle, comprising a cup-shaped driving coupling with a pulley, a housing of magnetically conductive material having elements for mounting on a tubular protrusion of the water pump housing, an excitation coil having elements for mounting on a front cover of the water pump, a driven coupling half made in the form of a flange with an annular groove and mounted coaxially with the leading coupling half on the output shaft of the water pump with axial clearance In particular, the leading half coupling, in the annular groove of the flange there are elements for removing the driven half coupling from the leading half coupling in contact with its end face, characterized in that the leading and driven half couplings are rigidly mounted on one output shaft of the water pump, the driven half coupling is mounted on the output shaft of the water pump through bearings and is made in the form of a composite flange, consisting of a sleeve and a disk, rigidly interconnected by at least four spring-loaded radially mounted in the groove of the flange at Hur, interacting with the end of the leading half of the coupling.