KR20160130029A

KR20160130029A - clutch operation bearing

Info

Publication number: KR20160130029A
Application number: KR1020150061871A
Authority: KR
Inventors: 김상인; 김진홍
Original assignee: 주식회사평화발레오
Priority date: 2015-04-30
Filing date: 2015-04-30
Publication date: 2016-11-10

Abstract

The present invention relates to a clutch operation bearing. An impeller (270) causing wind (B) is formed in the inner ring (410) of the bearing (400). The wind (B) caused by the impeller (470) when a vehicle is driven on a flooding road prevents contaminated water (A) from flowing into the vehicle to prevent loss and damage to lubricating grease, balls, and ball rolling surfaces of the bearing (400), thereby extending the service life of the bearing (400).

Description

Clutch operation bearing

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clutch actuating bearing, and more particularly, to a clutch actuating bearing capable of preventing moisture and foreign matter from penetrating.

The clutch is a power interrupter installed between the engine and the transmission to disconnect or connect the engine power.

Conventionally, the clutch of a conventional manual transmission vehicle has interrupted the engine power by pushing the diaphragm with a release bearing to contact and separate the flywheel, the clutch disc and the pressure plate.

A clutch of a recent DCT (Double Clutch Transmission) vehicle is provided with an engagement bearing corresponding to the release bearing as a diaphragm operating means.

The present invention is applicable to both the above-described release bearings and engagement bearings, which will be collectively referred to as " clutch actuating bearings ".

1 shows an example of a conventional manual transmission vehicle clutch. A release bearing 4 that is operated forward and backward by a release fork 2; a diaphragm 6 which is pressed by a center portion of the release bearing 4; (8) for pressing the flywheel (10) against the flywheel (10) according to forward / backward movement of the pressure plate (8) (Not shown).

The clutch housing 18 is provided with a heat dissipating hole for discharging the heat generated during friction between the flywheel 10 and the clutch disc 14 and the pressure plate 8 and a fork window And the like.

Therefore, when the vehicle travels on the flooded road, the contaminated water flows into the interior of the clutch housing through the opening, and the contaminated water is scattered throughout the clutch housing by the rotation of the rotors in the clutch housing, ) That is, the clutch actuating bearing is contaminated by the contaminated water.

If the clutch actuating bearing is contaminated by contaminated water, there is a problem that not only the internal lubricating grease is lost but also the lubricating grease is deteriorated, flaking phenomenon occurs early on the ball and ball rolling surface, and eventually it is damaged.

Therefore, the clutch operation bearing can not be normally operated, so that the clutch operation is not normally performed.

Therefore, conventionally, as shown in FIG. 2, a sealing device 9 is provided between the inner ring 7 and the outer ring 5 so as to block the gap therebetween to prevent the contaminated water from penetrating.

An example of the prior art in which the sealing device 9 is installed as described above is disclosed in Korean Patent Laid-Open Publication No. 10-2009-0082395.

However, since the sealing device 9 is a rubber sealing ring, one end of the sealing ring can be fixed to the inner ring or the outer ring, but the other end is simply contacted. Therefore, It was impossible to completely block them, resulting in the above problems due to contamination of the contaminated water.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a clutch and a clutch for preventing penetration of polluted water, The object of the present invention is to provide a working bearing.

According to an aspect of the present invention, there is provided an air compressor comprising: a guide tube mounted on an outer circumferential surface of an outer shaft; a piston provided in the guide tube so as to be movable forward and rearward in the axial direction; And an impeller which includes a bearing which is in contact with an inner end of the bearing, and which prevents the impregnation of the contaminated water into the bearing by generating wind when the vehicle is running.

The impeller is a ring-shaped component and is inserted into the inner ring of the bearing.

The impeller is formed with a plurality of blades that generate winds opposed to the direction of infiltration of the contaminated water upon rotation of the inner ring.

And an engaging portion is formed at the rear end of the impeller so as to surround the rear end of the inner ring so as to inhibit the forward movement of the impeller in the axial direction.

A locking hole is formed in the inner circumferential surface of the impeller, a locking protrusion is formed in the inner circumferential surface of the ball contact portion of the inner ring, and the locking protrusion is engaged with the locking hole to restrict axial movement of the impeller in the inner ring.

Between the inner ring and the outer ring of the bearing, a front seal and a rear seal for sealing the front gap and the rear gap between the inner ring and the outer ring are provided.

According to the present invention as described above, the impeller is provided in the inner ring of the clutch actuating bearing, so that the impeller rotates when traveling on a flooded road, and wind is discharged from the inside of the clutch actuating bearing to the outside.

Therefore, it is possible to prevent the phenomenon that the lubricant grease is lost or deteriorated by the foreign matter contained in the polluted water and the polluted water by preventing the wind blowing from the penetration of the polluted water, and the prevention of premature flaking and breakage of the ball and the ball rolling surface .

Therefore, the durability life of the clutch operated bearing is increased, and the clutch operation is always performed normally.

1 is a configuration diagram of a clutch according to a related art;
2 is a sectional view of a clutch actuating bearing according to the prior art;
3 is a sectional view of the clutch actuating bearing according to the present invention in an installed state.
4 is an enlarged view of the main part of Fig.
5 is a cross-sectional view of the impeller, which is a main constituent of the present invention.
Fig. 6 is a corresponding view of Fig. 5, showing a state in which the impeller is installed in another structure; Fig.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The thicknesses of the lines and the sizes of the components shown in the accompanying drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are defined in consideration of the functions of the present invention, and these may vary depending on the intention of the user, the operator, or the precedent. Therefore, definitions of these terms should be made based on the contents throughout this specification.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

Fig. 3 is a sectional view of the clutch actuating bearing according to the present invention, showing a part of a double clutch having a double shaft.

The transmission input shaft is composed of an inner shaft as a double shaft and an outer shaft 100 on the outer side of the inner shaft.

Clutch actuating bearings are provided outside the outer shaft (100).

The clutch actuating bearing includes a guide tube 200 mounted on the outer circumferential surface of the outer shaft 100, a piston 300 provided so as to be movable forward and backward in the axial direction inside the guide tube 200, And a bearing 400 mounted on one side and contacting the inner end of the diaphragm 500.

Accordingly, when the clutch fork (not shown) pushes the piston 300, the bearing 400 advanced with the piston 300 pushes the inner end of the diaphragm 500.

4, the bearing 400 includes an inner ring 410 and an outer ring 420, a cage 430 provided between the inner ring 410 and the outer ring 420, a cage 430 And a plurality of balls 440 which are provided at regular intervals in the outer ring 420 and are in rolling contact with the inner ring 410 and the outer ring 420.

Accordingly, the inner ring 410 and the outer ring 420 rotate relative to each other about the ball 440.

That is, the outer ring 440 provided on the piston 300 connected to the clutch fork is not rotated, while the inner ring 410 contacting the diaphragm 500 rotated when the engine power is transmitted is rotated at high speed with the diaphragm 500 .

The inner ring 410 is provided with an impeller 470.

The impeller 470 is a ring-shaped part, and a plurality of blades 471, which generate wind in the forward direction of the impeller (toward the inner end side of the diaphragm 500 as the left direction in the drawing), are formed at regular intervals during rotation.

The inner ring 410 includes a diaphragm contact portion that contacts the inner end of the diaphragm 500 and a ball contact portion 411 that is bent at a substantially right angle to the outer periphery of the diaphragm contact portion and in which the ball 440 comes into rolling contact.

The impeller 470 is mounted on the inner surface of the ball contact portion 411 of the inner ring 410.

5, the impeller 470 is press-fitted into the inner surface of the inner ring 411 of the inner ring 410. As shown in Fig. In such a mounted state, the impeller 470 is blocked by the portion of the outer ring 420 mounted on the piston 300 in the rear direction (the direction in which the piston 300 is positioned as the right direction in the figure) 410).

However, there is no structure for preventing the detachment of the impeller 470 in front of the impeller 470 (in the direction in which the diaphragm 500 is positioned as the left direction in the drawing).

Therefore, the rear end of the impeller 470 is bent outward in the radial direction to form the engaging portion 472. When the impeller 470 is mounted on the inner ring 410, the engaging portion 472 is engaged with the end of the ball contacting portion 411 of the inner ring 410 so as to surround the impeller 470, 410 are prevented.

Meanwhile, in order to maintain the impeller 470 mounted, the structure shown in FIG. 6 can be applied.

As shown in FIG. 6, a plurality of locking protrusions 412 may be formed on the outer circumferential surface of the ball contact portion 411 of the inner ring 410. A locking hole 473 is formed through the inner circumferential surface of the impeller 470 in correspondence with the locking projection 412.

The engaging recesses 412 and the engaging grooves 473 are formed on the circumference of the inner contact surface 411 of the inner ring 410 and the inner circumferential surface of the impeller 470 so as to have the same length, Therefore, when the impeller 470 is inserted into the inner circumferential surface of the ball contact portion 411 of the inner ring 410, the engagement protrusions 412 corresponding to the respective engagement grooves 473 are inserted and engaged, .

The engagement of the engaging groove 473 and the engaging protrusion 412 prevents the impeller 470 from being detached from the inner ring 410.

4, the bearings 400 may be provided with seals 450 and 460 between the inner ring 410 and the outer ring 420. As shown in FIG.

The seal consists of a forward seal 450 and a rear seal 460.

The front seal 450 is provided at the end of a seal mounting ring (not shown) mounted on the front end of the outer ring 460 and contacts the outer circumferential surface of the inner ring 410 to seal the front clearance of the bearing 400 The rear seal 460 is provided at the end of the seal mounting ring (not shown) mounted on the inner circumferential surface of the bending portion of the outer ring 420 and contacts the outer peripheral surface of the inner ring 410, .

The function and effect of the present invention will now be described.

The inner ring 410 of the bearing 400 is rotated together with the diaphragm 500 because the engine is in the power transmission state during the running of the vehicle.

That is, the inner ring 410 of the bearing 400 is rotating when the vehicle is traveling on the immersion road.

When the inner ring 410 is rotated, the impeller 470 installed on the inner ring 410 is rotated integrally with the blades 471 of the impeller 470 to wind the wind B toward the front of the impeller 470 .

The impeller 470 rotates at high speed together with the inner ring 410 so that the wind B generated by the blade 471 is strongly discharged toward the front of the bearing 400. [

On the other hand, the contaminated water A scattered by the rotors (flywheel, clutch disk, pressure plate) in the clutch housing flows through the front space of the bearing 400 via the space for installing the diaphragm 500.

According to the present invention, the impeller 470 rotating together with the inner ring 410 is provided so that the wind generated by the impeller 470 is blown toward the front of the bearing 400 at high speed and high pressure.

That is, the wind B of the impeller 470 is blown against the entry path of the contaminated water A, whereby the contaminated portion A is blocked by the wind B and flows into the inside of the bearing 400 .

Part of the contaminated water not blocked by the wind B is secondarily blocked by the front seal 450 and the rear seal 420 installed between the inner ring 410 and the outer ring 420, 400). &Lt; / RTI >

As described above, since the contaminated water can not penetrate into the bearing 400, the loss and deterioration of the lubricating grease caused by the contaminated water are prevented.

Also, since the contaminated water can not penetrate into the inside of the bearing 400, the foreign substances contained in the contaminated water can not penetrate into the inside of the bearing 400, and the early flaking phenomenon of the ball and the ball rolling surface Breakage is prevented.

As described above, moisture and foreign matter penetration of the bearing 400 is prevented, thereby preventing loss and deterioration of the lubricating grease, preventing premature flaking and breakage of the balls and ball rolling surfaces, .

Further, the bearing 400 is normally operated for the same reason, so that the clutch operation can be normally smoothly performed.

The inner circumference end portion of the impeller 470 is formed with a locking portion 472 bent radially inward and is hooked to the rear end of the inner ring 410 so that the impeller 470 is released forward of the inner ring 410 Is prevented.

A locking hole 412 is formed in the inner peripheral surface of the inner ring 410 and a locking hole 473 is formed in the inner peripheral surface of the impeller 470 so that the locking hole 412 is inserted into the locking hole 473 The impeller 410 is prevented from being released to the front of the inner ring 410.

The rearward detachment of the impeller 410 is prevented by the rear end of the outer ring 420.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is understandable. Accordingly, the true scope of the present invention should be determined by the following claims.

100: outer shaft 200: guide tube
300: Piston 400: Bearing
410: Inner ring 411: Ball contact
412: stumbling block 420: outer ring
430: Cage 440: Ball
450: front seal 460: rear seal
470: impeller 471: blade
472: Retaining part 473: Retaining hole
500: diaphragm

Claims

A guide tube 200 mounted on the outer circumferential surface of the outer shaft 100, a piston 300 provided so as to be movable forward and backward in the axial direction inside the guide tube 200, And a bearing (400) contacting the inner end of the diaphragm (500)
Wherein an impeller (470) is provided to prevent the penetration of the contaminated water into the bearing (400) by generating a wind when the vehicle (400) is running.

The method according to claim 1,
Wherein the impeller (470) is inserted into the inner peripheral surface of the inner ring (410) of the bearing (400) as a ring-shaped part.

The method of claim 2,
Wherein the impeller (470) is provided with a plurality of blades (471) for generating a wind opposite to a direction of infiltration of polluted water when the inner ring (410) is rotated.

The method of claim 2,
Wherein an engaging portion (472) is formed at the rear end of the impeller (470) to surround the rear end of the inner ring (410) and to inhibit the forward movement of the impeller (470) in the axial direction.

The method of claim 2,
A locking hole 473 is formed on the inner circumferential surface of the impeller 470 and a locking protrusion 412 is formed on the inner circumferential surface of the ball contacting portion 411 of the inner ring 410. The locking protrusion 412 is inserted into the locking hole 473 So as to prevent axial movement of the impeller (470) in the inner ring (410).

The method according to claim 1,
A front seal 450 and a rear seal 460 for sealing a front gap and a rear gap between the inner ring 410 and the outer ring 420 are formed between the inner ring 410 and the outer ring 420 of the bearing 400, ) Is provided on the outer circumferential surface of the clutch operating bearing.