A friction clutch of the vehicle

 

(57) Abstract:

A friction clutch of the vehicle contains a spring resting on the support ring, the thrust flange movably mounted on the push spring. Thrust flange is made from the outer side in the form of a two-stage cylinder with an axial hole. The smaller the outer diameter side of the thrust flange is made of such size that enables axial movement in the bore formed by the diaphragm spring, the mechanical transition from smaller to larger diameter outer surface of the thrust flange facing toward the edges of the petals of a pressure spring, forming a hole in it. At the end of the outer cylindrical surface of smaller diameter of the thrust flange is made a groove, which has the support ring, to the opposite end part of the flange is glued friction plate, repeating the shape of this end surface of the thrust flange. Effect: reduce the complexity and cost of manufacturing a friction clutch of the vehicle, improving its reliability and manufacturability. 3 Il.

The invention relates to friction clutches of the car.

Known design clutch clutch, OPI is m pressure disc, supporting element is made in the form of a backing plate fixedly connected to the housing of squeezing bearing, tormozok, provided with a friction lining, wherein tormozok provided with an additional friction lining placed in the drive, and installed tormozok with the possibility of axial movement on the shaft gearbox (gear box changes gears) between the support element and screw-down dial and the lever of the clutch is connected directly with the pressure disk.

This invention leads to the complexity of the design of the clutch, the increase in the number of mobile connections in the design included additional elements, i.e., the design becomes more expensive, more complicated Assembly, adjustment and repair.

Also known construction of the automatic gearing bearing inclusions and clutch diaphragm spring, is described in the patent of Russian Federation N 2016281 BI N 13, publ. 15.07.94, containing the hub, mounted on the diaphragm spring clutch, the sleeve is installed on the bearing and a spring ring mounted for movement through the intermediate sleeve in the stepped groove of the sleeve, the transition from one diameter to the tion, mounting and Dismounting and improve technological hub is made eccentric collar located with the opportunity to interact with a spring ring on the opposite side from the intermediate sleeve on the inner surface of the hub is made a groove in one surface of which has an eccentricity relative to the axis of the hub, and the second is made in the form of a conical surface.

The disadvantages of the above described constructions are increasing the number of process steps in the fabrication process details in the design that would increase the cost of the whole structure.

The closest analogue of the invention is the design of the friction clutch used on the VAZ-2101-07. This construction is described, for example, on page 64 of the book Vershygory C. A., Ignatov, A. P., Novokshonov K. C., Pyatkova K. B. Cars "Lada" - M.: Transport, 1995, 240 S. Used car dry single-plate clutch is a friction clutch permanently closed type, with a Central pressure diaphragm spring and vibration damper on the slave drive. The leading part of the clutch is nonseparable node placed in the casing and comprising a casing, a pressure Tami. Between the flywheel and pressure disk on the splines of the drive shaft of a transmission is the clutch disc with friction linings, which is connected to the hub via the torsional vibration damper. The clutch release bearing acts on the diaphragm spring through a thrust flange movably mounted on a pressure spring, which is a means of connecting plates and rivets connected to the clutch cover. The clutch is hydraulic. When you turn off the traction force from the pedal through the plunger is transmitted to the pistons, which, moving in the main cylinder, compress the spring. While the front sealing ring covers the vent hole, and the cavity of the cylinder disjoined from the tank. Fluid under pressure through the pipe and the hose enters the cavity of the working cylinder, moving the piston and plunger. Turning relative to the ball joint, fork moves the clutch bearing clutch, which through the bearing and the thrust flange prohibit push spring on the support rings. The outer edge of the spring through the tabs takes the pressure disc from the slave drive and the transmission of torque to the transmission is terminated. When releasing the pedal all the details of the return is time-consuming, because the operation of manufacturing and installation of the thrust flange is performed in several technological transitions and does not provide sufficient reliability of the site as a whole. Thrust flange is a forged ring with three tabs for attachment to the clutch cover with steel plates and rivets. To achieve the friction between the flange and the clutch release bearing on the flange is attached a ring of friction material. The weak point of the construction is a steel plate holding the thrust flange. In case of breakage, which in practice occurs, you must replace the clutch cover with pressure disc Assembly.

The objective of the invention is to reduce the complexity and cost of manufacturing a friction clutch of the vehicle and increase its reliability and manufacturability.

The solution of this problem is due to the fact that the friction clutch of the vehicle contains a pressure spring supported on the support ring, the thrust flange movably mounted on the push spring. Thrust flange is made from the outer side in the form of a two-stage cylinder with an axial hole. The smaller the outer diameter side of the thrust flange made such were the s, mechanical transition from smaller to large diameter outer surface of the thrust flange facing toward the edges of the petals of a pressure spring, forming a hole in it. At the end of the outer cylindrical surface of smaller diameter of the thrust flange is made a groove, which has the support ring, to the opposite end part of the flange is glued friction plate, repeating the shape of this end surface of the thrust flange.

Bearing inclusions clutch has a possibility of contact with the diaphragm spring through a thrust flange, made in the form of a two-stage cylinder with an axial hole. The smaller the diameter of the flange is made so that this part had the possibility of axial movement in the bore formed by the petals of the diaphragm spring. The transition from the smaller diameter cylinder to greater forms the end portion of the flange which is arranged to transmit the pressure force on the diaphragm spring. A larger diameter of the flange is made of 20 - 25 mm larger than the diameter of the hole formed by the diaphragm spring. The height of the side flange of larger diameter is made equal to the height of 5 - 6 mm On a face portion of the flange in contact with covoy part of the flange. For fixing the flange against axial movement relative to the petals of the diaphragm spring on the part of smaller diameter is made a groove for installing snap ring. The axial hole in the flange should provide non-contact passing through it to the input shaft. This design detail allows us to simplify the Assembly of the driving part of the clutch. Thrust flange is simply inserted into the hole formed by the petals of the diaphragm spring, and is fixed against axial movement relative to the above petals using a snap ring mounted in a groove made on the cylindrical part of the flange of smaller diameter. This installation method significantly reduces the complexity of Assembly operations.

In Fig. 1 shows the leading part of the clutch, and Fig. 2 - scheme of the same clutch in the off state, and Fig. 3 presents the design of the thrust flange.

The leading part of the clutch consists of a pressure of the clutch disc 1, diaphragm pressure spring 2, the thrust flange pressure spring 3. Position 4 indicated the bearing of the clutch. Driven part of the clutch consists of a slave " two-stage cylinder with an axial hole 7, which provides free passage through it of the drive shaft gearbox 6. The smaller the diameter 8 of the flange 3 is made of 0.5 - 0.6 mm smaller the diameter of the hole formed by the petals of the diaphragm spring 2. The transition from the smaller diameter cylinder 8 to 10 more forms the end part of the flange 9. At the end of the flange is glued strip of friction material 11. On the part of smaller diameter of 8 completed annular groove 12 under the retaining ring. Spring 2 rests on the supporting ring 13.

In the normal position (grip included) thrust flange 3 (Fig. 1) is in the off position, i.e., through its petals diaphragm spring 2 is not transferred to the control effort. From the radial movement of the flange 3 in the working position is held due to the fact that the smaller the diameter 8 of the flange 3 is made almost equal to the diameter of the hole formed by the petals of the diaphragm spring 2. From the axial movements of the flange 3 is held together by a retaining ring mounted in the groove 12 on the cylindrical part of smaller diameter 8 of the flange 3. For clutch release bearing 4 clutch approaches the flange 3 with its end part on which the pasted strip of friction material 11. When soprikosnoveniem 11, the bearing 4 starts rotating with angular velocity equal to the speed of rotation of the driving part of the clutch (Fig. 2). Simultaneously, the end portion 9 of the flange 3 is pressed against the petals of the diaphragm spring 2. Upon further movement of the bearing 4 through the flange 3 has an impact on the spring 2 and it starts to bend to the support rings 13. The outer edge of the pressure spring 2 through the tabs removes pressure from the slave disk 1 disk 5, and the transmission of torque to the driving shaft gearbox 6 stops. When releasing the clutch pedal (the inclusion of the clutch under the action of the spring 2 all items returned to its original position.

Manufacturer of flange proposed design will reduce the cost of the driving part of the clutch of the vehicle due to the abolition of the plates connecting the same node prototype bonnet leading part.

The advantages of the above construction can be attributed to the lack of plates, in which the same node prototype riveting to the clutch cover. In them there was no need since the proposed design provides self-centering of the details in the hole formed by the petals of the diaphragm spring.

The proposed Kai occurs due to fatigue failure due to frequent mechanical impact on the plate). In our case, in case of failure of the offered flange is enough to remove the snap ring installed in a groove made on the cylindrical surface of smaller diameter, and to replace the flange with a new one.

A friction clutch of a motor vehicle comprising a pressure spring supported on the support ring, the thrust flange movably mounted on the push spring, characterized in that the thrust flange is made from the outer side in the form of a two-stage cylinder with an axial hole, the smaller the outer diameter side of the thrust flange is made of such size that enables axial movement in the bore formed by the diaphragm spring, the mechanical transition from smaller to larger diameter outer surface of the thrust flange facing toward the edges of the petals of a pressure spring, forming a hole in it, at the end of the outer cylindrical surface of smaller diameter of the thrust flange is made a groove, which includes a support ring, to the opposite end part of the flange is glued friction plate, repeating the shape of this end surface of the thrust flange.

 

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