SK7263Y1 - Hybrid clutch - Google Patents

Abstract

A hybrid coupling is formed by a driving part, i. e. a driving hollow shaft (1) and a output shaft (5), in which an anchoring ring (2) is slidably mounted and it is fixed to the drive hollow shaft (1). The anchoring ring (2) is rigidly connected to the spring (3), encircling a driven shaft (5), on the other end is firmly connected to a friction ring (4) and operating a dogging friction counter-ring (6) by forces of a switching mechanism (7). The driving friction counter-ring (6) is fixed to the driven shaft (5), by e.g. grooving. A free wheel (8) is fixedly connected to the drive hollow shaft (1) and the driven shaft (5), by e.g. grooving.

Description

The field of technology is delimited by couplings of rotating components connecting and expanding without interrupting the effect of torque. These couplings are also spring couplings, ring (tapered or multi-plate) friction couplings and freewheels. The hybrid coupling for connecting the drive part and the driven part is formed by the connection of the spring clutch, the ring (conical or multi-plate) friction clutch with the switching mechanism and the freewheel. Their use is general in mechanical engineering.

BACKGROUND OF THE INVENTION

In motor vehicles and other machinery, simple friction cone and multi-plate clutches are used, the disadvantage of which is the limited service life of the friction surfaces, respectively. low load-bearing capacity or high switching force required.

The spring clutch known as Schwarz (Machine Tables, Ing. Bednch Vrzal et al., 1972 SNTL) is designed so that its actuation is realized by a mechanism that is suitable for smaller torques, the tapered or vane friction clutch and the freewheel are individually used to transmit torques in specific design solutions due to their properties. The switching mechanisms of friction tapered or multi-plate clutches can be hydraulic, mechanical, electromagnetic or combined. They are generally known, for example, from motoring literature and magazines.

The essence of the technical solution

In order for the friction clutch to transmit more torque and to switch it into operation without interruption, and for torque to be transmitted in both directions, the coupling of the spring clutch, the tapered clutch and the clutch and the freewheel is used, to create a hybrid link.

In the technical solution, this connection is realized in such a way that the hybrid coupling is formed by a driving part, i. j. a drive hollow shaft, a spring surrounding the driven shaft of the driven part, the latter having an anchor ring on one side and a friction ring on the other side interacting with the driven part, i. j. a driving friction counter ring coupled to the switching mechanism and the driven shaft. The driving friction counter ring is rigidly connected to the driven shaft, e.g. grooving. The hybrid clutch is co-formed by a freewheel that is rigidly coupled to both the drive and driven parts, e.g. grooving. The switching mechanism is a hybrid clutch element which causes an axial force movement causing the friction rings to be pressed together.

The hybrid coupling according to the utility model operates such that when the drive portion is rotated, i. j. of the drive hollow shaft, a tension is exerted on the spring wire in the direction of the winding through the anchoring element, which then rotates around the driven shaft of the driven part. When it is necessary to engage the clutch, the switching mechanism presses the friction ring on the spring and the driving friction counter-ring connected to the driven shaft by axial movement, thereby creating a spring retarding force which then reduces its inner diameter, firmly circumscribing the driven shaft and applying frictional force it carries it in the direction of rotation of the drive part. In order to increase the coupling force, the driving friction counter ring can be mounted on an inclined groove such that the axial coupling force is increased by the application of torque forces. The hybrid clutch can also be arranged such that the drive and driven parts exchange functions and the transmitted torque is of the opposite orientation. Because the spring transmits torque in only one direction by adding a freewheel, a hybrid clutch transmits torque in both directions, for example in motor vehicles, when we also need to brake the engine or recover energy. The advantage of the hybrid coupling is that the spring coupling has a rapid start-up of the switching force and the total force required for switching on and running is lower than that of the single ring respectively. for higher friction clutches, since the more force it transmits, the greater the friction force is exerted by the spring.

BRIEF DESCRIPTION OF THE DRAWINGS

The utility model will be explained in more detail with reference to the drawing in which Figure 1 shows a hybrid coupling formed by a spring coupling with a conical friction coupling with a switching mechanism and a freewheel.

EXAMPLES

The diagram of Figure 1 shows a hybrid coupling according to a utility model, wherein the hybrid coupling is pos

SK 7263 Υ1 melts from the spring 3 firmly connected to the anchor ring 2 at the drive hollow shaft 1 and the friction ring 4 at the driven shaft 5. The friction ring 4 is followed by a friction counter-ring 6 and the switching mechanism 7. The friction counter-ring 6 is connected to the driven 5 grooving. The freewheel 8 is connected to the drive hollow shaft 7 and the driven shaft 5 via a spline. In addition to the embodiment shown in Figure 1, a multi-walled spring 3 may be provided to increase its load-bearing capacity and its cross-section may be triangular or square. The switching mechanism 7, in addition to the hydraulic deriving of the axial force movement, may have the deriving of the switching force electromagnetically, mechanically or in combination, as is usual with friction clutches in general. The illustrated friction ring 4 and the entrainment friction ring 6 in the conical design can be replaced by single or multi-piece slats. If there is no need to transmit the torque in both directions, the clutch may be without a freewheel 8. The spline on the shaft 5 connecting it to the friction ring 6 may be oblique so that the longitudinal force exerted by the oblique splines complements the force from the switching mechanism 7.

The illustrated embodiment of the utility model object is not limited or exhausted.

Industrial usability

Hybrid couplings can be used in all drives where we want to achieve engagement and disengagement without interrupting torque with engagement when it is needed for operational reasons and also when we need to transfer the torque of the opposite direction. Such machines can be vehicles with internal combustion engine, hybrid drive, but also electric vehicles, namely their main gearboxes, inter-axle clutches, single-wheel clutches, high-speed gearboxes, etc. The hybrid clutch can be used without a freewheel if we need to transmit torque in one direction only.

PROTECTION REQUIREMENTS

Claims (6)

Hybrid coupling consisting of a drive hollow shaft, anchor ring, spring, friction ring, driven shaft, drive friction counter ring, switching mechanism and freewheel, characterized in that the drive hollow shaft (1) is connected via an anchor ring (2) (3), at the other end of which there is a friction ring (4) and which encircles the driven shaft (5) connected to a drag friction ring (6) which is connected to the switching mechanism (7), the freewheel (8) being fixedly connected to drive hollow shaft (1) as well as driven shaft (5). Hybrid coupling according to claim 1. 1, characterized in that the spring (3) can be single or multi-stage and has a square or triangular cross-section. 3. The hybrid coupling of claim 1. 1, characterized in that in the switching mechanism (7) the axial force movement is generated by hydraulic, electromagnetic, mechanical or combined. 4. The hybrid coupling of claim 1. 1, characterized in that the friction ring (4) and the driving friction counter-ring (6) are conical, lamellar one-piece or multi-piece. 5. The hybrid coupling of claim 1. 1, characterized in that it is free of freewheel (8). 6. The hybrid coupling of claim 1. 1, characterized in that the splines connecting the driven shaft (5) to the driving friction counter ring (6) are oblique.