DE112018007309B4 - flat storage - Google Patents

Abstract

Flat bearing comprising a cover (210A), a guide ring (160, 260A, 360, 960) and a bearing device (70) arranged between the cover (210A) and the guide ring (160, 260A, 360, 960), the outer Peripheral area of the guide ring (160, 260A, 360, 960) comprises a splash guard (169, 269, 369, 469, 969) extending in the radial direction and in the circumferential direction of the flat bearing (100, 200) and between the outer peripheral area of the cover (210A ) and the splash guard (169, 269, 369, 469, 969) forming a first gap (G1), the splash guard (169, 269, 369, 469, 969) having at least one of the upper surface of the splash guard (169, 269 , 369, 469, 969) excellently located rib (168, 167, 166, 268, 267, 266, 368, 367, 366, 468A, 467A, 466A, 468B, 467B, 466B, 968, 967, 966) which Rib (168, 167, 166, 268, 267, 266, 368, 367, 366, 468A, 467A, 466A, 468B, 467B, 466B, 968, 967, 966) circumferentially continuous or disco continuously and the rib (168, 167, 166, 268, 267, 266, 368, 367, 366, 468A, 467A, 466A, 468B, 467B, 466B, 968, 967, 966) to reduce the dimensions of the first gap ( G1), characterized in that the rib (168, 167, 166, 268, 267, 266, 368, 367, 366, 468A, 467A, 466A, 468B, 467B, 466B, 968, 967, 966) has at least one notch (368C, 367C, 366C) extending approximately radially through the rib (168, 167, 166, 268, 267, 266, 368, 367, 366, 468A, 467A, 466A, 468B, 467B, 466B, 968, 967, 966).

Description

field of technology

This invention relates to the field of bearings, more particularly relates to a plane bearing.

State of the art

1 shows a known flat bearing (strut bearing) 1. How 1 shows, the flat bearing 1 comprises a cover 10, an upper bearing ring 20, a plurality of rolling elements 30, a cage 40, a lower bearing ring 50 and a guide ring 60.

2 shows a schematic representation of a MacPherson strut system that has a flat bearing 1 in 1 used. In this MacPherson strut system, the cover 10 of the flat mount 1 is attached to the upper bracket 2, and the upper bracket 2 is attached to the body. The guide ring 60 is supported on the spring 3 . The spring 3 is attached to the spring plate, not shown. When the spring 3 rotates, it causes the guide ring 60 and the lower bearing ring 50 to rotate.

The flat bearing is usually exposed on the outer part of the body. Between the cover 10 and the guide ring 60, there are a first clearance G1 and a second clearance G1 on the outer peripheral side (farthest side from the center axis O of the plane bearing 1) and on the inner peripheral side (near the center axis O side) of the plane bearing 1 in the radial direction R, respectively space G2. The gaps G1 and G2 are the main contamination paths of the flat bearing 1. When a vehicle with a flat bearing 1 runs on a rough road, foreign matter such as water, mud and particles splashed up from the tires can enter the flat bearing through the gaps G1 and G2 1 arrive.

More specifically, according to the prior art, the outer peripheral portion of the guide ring 60 is provided with a splash guard 69 having a flat surface. The flow directed toward the inside of the plane bearing 1 can enter the inside of the plane bearing 21 under high pressure through the gaps G1 and G2 (as indicated by the broken-line arrow in Fig 1 shown). This can lead to unexpected increased wear and premature failure of the flat bearing 1.

3 shows another known flat bearing 1A. How 3 shows, the important differences of the flat bearing 1A compared to the flat bearing 1 in 1 as follows: The cover 10A comprises a first component 11 and a second component 12, the guide ring 60 comprises a third component 61 and a fourth component 62. For example, the first component 11 can be made of hard material and the second component 12 can be made of softer material than the first component 11 may be made. For example, the third component 61 can represent a frame that exerts a reinforcing effect on the fourth component 62 . Due to the presence of the gaps G1 and G2, the plane bearing 1A has problems similar to those in FIG 1 shown flat bearing 1.

The pamphlets US 2015/0354629 A1 and DE 10 2010 011 817 A1 disclose both strut bearings, one bearing being arranged between a cap and a guide ring. As a splash guard, the guide ring has elevations and valleys that engage in corresponding elevations and valleys of the cap, which can reduce the ingress of dirt and water.

subject of the invention

The object of this invention is to overcome the deficiencies that are present in the prior art described above, and to provide a flat bearing that can reduce the possibility that water, mud, particles and other foreign matter from the gap between the cover and the guide ring of the flat bearing get inside the flat bearing.

There is provided a plane bearing comprising a cover, a guide ring and a bearing device arranged between the cover and the guide ring, wherein the outer peripheral portion of the guide ring includes a splash guard extending in the radial direction and in the circumferential direction of the plane bearing and between the outer peripheral portion of the cover and the splash guard is formed with a first gap, the splash guard including at least one rib projecting from the top surface of the splash guard, the rib extending circumferentially continuously or discontinuously, and the rib serving to reduce the size of the first gap. In this case, the rib comprises at least one notch which passes through the rib approximately in the radial direction.

In at least one embodiment, the splash guard includes at least one foreign matter discharge part for discharging the foreign matter that climbs over the at least one rib.

In at least one embodiment, the splash guard comprises a plurality of ribs and the indentations of adjacent ribs are offset in the circumferential direction in the radial direction.

In at least one embodiment, the rib has a triangular, semi-circular, semi-elliptical or trapezoidal cross-section in the axial cross-section of the splash guard.

In at least one embodiment, the rib extends inclined relative to the axial direction of the plane bearing as follows: the further it goes to the axial top, the more it approaches the radial outside.

In at least one embodiment, the guide ring comprises a hook portion for hooking onto the hook portion of the cover, the guide ring is peripherally provided with at least one inside rib laterally or axially below its hook portion, the inside rib extends circumferentially continuously or discontinuously and serves to to reduce a second clearance between the inner peripheral portion of the cover and the inner peripheral portion of the guide ring.

In at least one embodiment, the inside rib extends inclined relative to the axial direction of the plane bearing as follows: the further it goes toward the axial bottom, the more it approaches the inside.

In at least one embodiment, the flat bearing is an axial bearing for a MacPherson strut system,
the bearing assembly includes: an upper bearing ring fixedly attached to the cover, a lower bearing ring fixedly attached to the guide ring, and a plurality of rolling elements located between the upper bearing ring and the lower bearing ring.

A flat bearing is also provided, which comprises a cover, a guide ring and a bearing device arranged between the cover and the guide ring, the outer peripheral region of the guide ring comprising a splash guard extending in the radial direction and in the circumferential direction of the flat bearing and between the outer peripheral region of the A first gap is formed between the cover and the splash guard, the splash guard including at least one rib projecting from the upper surface of the splash guard, the rib extending circumferentially continuously or discontinuously, and the rib serving to reduce the dimensions of the first gap. The splash guard includes a plurality of ribs that extend discontinuously in the circumferential direction, and ribs that are adjacent in the circumferential direction are arranged offset in the radial direction.

In this invention, a rib or a plurality thereof can reduce the dimensions of the first clearance and exert an effect similar to a breakwater to reduce the possibility of water, mud, particles and other foreign matter entering the interior of the flat bearing, thereby increasing the Wear and early failure of the flat bearing to avoid.

character list

• 1 shows a partial axial sectional view of a known flat bearing.
• 2 shows a partial sectional view of a MacPherson strut system that has a flat bearing in 1 used.
• 3 shows a partial axial sectional view of another known flat bearing.
• 4 12 is a partial axial sectional view of a plane bearing of the first embodiment of the present invention.
• 5 12 is a partial axial sectional view of a plane bearing of the second embodiment of the present invention.
• 6A shows a partial spatial representation of a guide ring of a flat bearing of the third embodiment according to the invention.
• 6B Fig. 12 shows, in the form of a schematic representation, the positions of notches of the ribs of a guide ring of a plane bearing of the third embodiment of the present invention.
• 7 Fig. 12 shows, in the form of a schematic representation, the structure of the ribs of a guide ring of a plane bearing of the fourth embodiment of the present invention.
• 8A and 8B 12 show a partial structural view of a guide ring of a plane bearing according to this invention.
• 9A and 9B 12 shows a partial structural view of a prior art guide ring of a plane bearing and a partial structural view of a guide ring of a plane bearing according to this invention, and serve to comparatively describe the effect of a guide ring according to this invention.

Reference List

1, 1A

flat storage;

10, 10A

Cover;

11

first component;

12

second component;

20

upper bearing ring;

30

rolling elements;

40

Cage;

50

lower bearing ring;

60, 60A

guide ring;

61

third component;

62

fourth component;

69

splash guard;

2

top bracket;

3

Feather;

G1

first space;

G2

second space;

O

central axis;

A

axial direction;

R

radial direction;

100 200

flat storage;

210A

Cover;

211

first component;

212

second component;

160, 260A, 360, 960

guide ring;

261

third component;

262

fourth component;

169, 269, 369, 469, 969

splash guard;

168, 167, 166, 268, 267, 266, 368, 367, 366, 468A, 467A, 466A, 468B, 467B, 466B, 968, 967, 966,

Rib;

368C, 367C, 366C

Notch;

365

support part;

364

guide cylinder part;

364A, 364B

inside rib;

363

hook part;

70

storage device;

1S, 2S

labyrinth seal structure;

C

circumferential direction.

Concrete embodiments

Exemplary embodiments of this invention will be described below with reference to the drawings.

First embodiment

How 4 shows, the first embodiment of this invention provides a plane bearing 100, wherein for the parts of the plane bearing 100 associated with the FIG 1 shown flat bearing 1 are identical or similar, identical or similar reference numerals are used and a detailed description of these parts is omitted.

The flat bearing (hereinafter sometimes referred to as “bearing” for short) 100 of this embodiment includes a cover 10, an upper bearing ring 20, a plurality of rolling elements 30, a cage 40, a lower bearing ring 50 and a guide ring 160. Between the cover 10 and the The guide ring 160 has a first gap G1 and a second gap G2 on the outer peripheral side and the inner peripheral side of the plane bearing 1 in the radial direction R, respectively.

A labyrinth seal structure 1S is disposed on the outer peripheral portion of the bearing 100 between the cover 10 and the guide ring 160 . A splash guard 169 is arranged on the outer peripheral area of the guide ring 160 . The splash guard 169 is located on the axial bottom and radial outside of the labyrinth seal structure 1S. The splash guard 169 extends along (including approximately along) the radial direction R and the circumferential direction C (see FIG 6A ) of the bearing 100. It must be understood that the top surface (disregarding the rib mentioned below) and the bottom surface of the splash guard 169 need not be flat, but that the top surface (disregarding the rib mentioned below) of the splash guard 169 slightly inclined in such a way that it approaches the axial underside the more it goes towards the radial outside.

In this embodiment, the top surface of the splash guard 169 is no longer a flat surface but is formed with a plurality of ribs 168, 167 and 166. From the radially inner side to the radially outer side of the bearing 100, the first rib 168, the second rib 167 and the third rib 166 are sequentially arranged. The ribs 168, 167 and 166 extend approximately along the circumferential direction of the bearing 100. The plurality of ribs 168, 167 and 166 can reduce the size of the first clearance G1 and have a similar effect lich a breakwater to reduce the possibility of water, mud, particles and other foreign matter (also referred to as contaminants) entering the labyrinth seal structure 1S of the bearing 100 and further entering the interior of the plane bearing 100.

Second embodiment

How 5 shows, the second embodiment of this invention provides a plane bearing 200, wherein for the parts of the plane bearing 200, which are connected to the FIG 2 shown flat bearing 1A or in 4 shown are identical or similar, identical or similar reference numerals are used, and detailed description of those parts is omitted.

Similar to the in 2 In the flat bearing 1A shown, the cover 210A of the bearing 200 comprises a first component 211 and a second component 212, the guide ring 260A of the flat bearing 200 comprises a third component 261 and a fourth component 262.

In this embodiment, a labyrinth seal structure 2S is disposed on the outer peripheral portion of the bearing 200 between the cover 210A and the guide ring 260A. In particular, a plurality of sealing lips protrude from the second component 212 toward the guide ring 260A and the plurality of sealing lips form a touch seal or gap seal with the guide ring 260A. A splash guard 269 is disposed on the outer peripheral portion of the guide ring 260A. The splash guard 269 is located on the axial bottom and radial outside of the labyrinth seal structure 2S.

Similar to the in 4 In the bearing 100 shown, in this embodiment the top surface of the splash guard 269 is no longer a flat surface but is formed with a plurality of ribs 268, 267 and 266.

Third embodiment

How 6A 12, the guide ring 360 of the flat bearing of the third embodiment of this invention has a structure similar to that of FIG 1 shown guide ring 60 and in 4 shown guide ring 160 on. Above all, the differences between the guide ring 360 of this embodiment and that in 1 shown guide ring 60 and in 4 shown guide ring 160 described.

How 6A 1, the guide ring 360 of this embodiment includes a guide cylinder part 364 and a support part 365, and the guide cylinder part 364 has a cylindrical shape whose axial direction is almost identical to the axial direction A of the plane bearing and for guiding the spring (see spring 3 in 2 ) of the suspension strut system. The support portion 365 extends from the upper end of the guide cylinder portion 364 toward the radially outside and serves to support the lower race of the bearing. The spring of the strut system can be supported on the support part 365 .

The splash guard 369 is formed on the outer peripheral portion of the support member 365 . The hook portion 363 for hooking to the hook portion of the cover is formed at the junction of the guide cylinder portion 364 and the support portion 365 .

Similar to the in 4 In the bearing 100 shown, in this embodiment the top surface of the splash guard 369 is no longer a flat surface but is formed with a plurality of ribs 368, 367 and 366. The ribs 368, 367 and 366 are not connected in the circumferential direction C, but are formed with an indentation or a plurality thereof. The positions of the indentations of the ribs 368, 367 and 366 in the circumferential direction C are preferably offset in order not to lose the breakwater-like effect of the ribs 368, 367 and 366. The indentations serve to ensure that the water and other foreign matter that settles on the radially inner side of the ribs 368, 367 and 366 can leave the bearing under the effect of gravity and/or centrifugal force. In 6A an indentation 368C on the first rib 368 is shown.

6B Fig. 12 shows, in the form of a schematic representation, the positions of the indentations of the ribs 368, 367 and 366. As 6 1, the first notch 368C of the first rib 368 is preferably offset from the second notch 367C of the second rib 367 in the circumferential direction C of the bearing, the second notch 367C of the second rib 367 is preferably offset from the third notch 366C of the third rib 366 in the circumferential direction C of the bearing shifted. The number of indentations of each rib is not limited to two as shown in the figure, but may be one or three or more.

As described above, the indentations 368C, 367C, and 366C can serve to drain water and other foreign matter, so the indentations 368C, 367C, and 366C are called a foreign matter draining portion. In this invention, the foreign matter discharge part is not limited to protruding indentations 368C, 367C and 366C. For example, at the bottom of the ribs 368, 367 and 366, through holes penetrating the ribs 368, 367 and 366 approximately in the radial direction R may be formed as foreign matter discharge parts. For example, on the splash guard 369, through holes penetrating the splash guard 369 approximately in the radial direction R can be formed as foreign matter discharge parts.

How 1 and 2 show, the inside of the flat bearing is usually separated from the peripheral structure (for example, upper bracket 2 in 2 ) Covered, which is why in the first and second embodiment, a plurality of ribs is attached to the radially outer splash guard of the guide ring. However, the gap G2 located on the radially inner side of the plane bearing can still be a dirt path.

How 6A 1, in this embodiment, at the position of the radially inner side of the guide ring 360 coinciding with the clearance G2, inside ribs 364A and 364B protruding toward the clearance G2 are formed, the ribs 364A and 364B extending approximately in the circumferential direction C. The ribs 364A and 364B further reduce the dimensions of the gap G2 and may reduce the possibility of water, mud, particles, and other foreign matter entering the interior of the bearing through the gap G2.

in the in 6 In the illustrated embodiment, a plurality of hook parts 363 are intermittently arranged in the circumferential direction C of the guide ring 360, and between adjacent hook parts 363, the ribs 364A and 364B are arranged. However, this invention is not limited to this. For example, the ribs 364A and 364B may be located below the hooking parts 363 (axial bottom), particularly when the hooking parts 363 extend along the entire circumference of the guide ring 360.

The ribs 364A and 364B are preferably inclined such that the further they go towards the radially inner side, the closer they get to the axial bottom. In this way, it is easier to prevent water and other foreign matter from entering the bearing, and at the same time it is easier for water and other foreign material to leave the bearing.

It is to be understood that in this application, ribs 364A and 364B may be referred to as inboard ribs, while ribs 368, 367 and 366 located on splash guard 369 may be referred to as outboard ribs. The number of inside ribs is not limited to two (two rings) as shown in the figure, it may be one rib, three ribs, or more ribs (one ring, three rings, or more rings). The number of outside ribs is also not limited to three (three rings) as shown in the figure, it may be one rib, two ribs, four ribs (one ring, two rings, four rings), or other number.

Fourth embodiment

7 Fig. 12 shows, in the form of a schematic representation, the structure of the ribs of a guide ring of a plane bearing of the fourth embodiment of the present invention.

How 7 12, on the top surface of the splash guard 469, a plurality of groups of ribs are arranged extending approximately along the circumferential direction of the bearing. The first set of ribs 468A, 467A and 466A and the second set of ribs 468B, 467B and 466B are offset in the radial direction R of the bearing. In this way, it is also possible to effectively cause water and other foreign matter to leave the splash guard 469 .

It is to be understood that the peripheral end portion of the first group including the ribs 468A, 467A and 466A and the peripheral end portion of the second group including the ribs 468B, 467B and 466B are not limited to those shown in FIG 7 shown mutual alignment are limited, but they can also be mutually separated (in the circumferential direction C) or overlapping.

8A and 8B 12 show a partial structural view of a guide ring of a plane bearing according to this invention. This structure can be applied to any of the first to fourth embodiments.

How 8A and 8B 12, in the axial cross section of the splash guard 969, the cross section of the first rib 968, the second rib 967, and the third rib 966 may have an approximately triangular shape. The first rib 968, the second rib 967, and the third rib 966 are designed to cause the top of the ribs 966, 967, and 968 to become gradually higher (according to arrow F) going from the outside in the radial direction R to the inside. . This can improve the effect of protecting against water and other foreign matter. At the same time, water or other foreign matter which overcomes the ribs 967 and 966 can be caused to escape under the action of the Centrifugal force easily leave the splash guard 969.

In axial cross-section of splash guard 969, the interior angles 968J, 967J, and 966J formed by the radially outer walls of first rib 968, second rib 967, and third rib 966 with the top surface of splash guard 969 are preferably greater than or equal to equal to 90 degrees. Another aspect is that the radially inner walls of the first rib 968, the second rib 967 and the third rib 966 are preferably inclined as follows: the further they go to the axial top, the closer they get to the radial outer side.

It is to be understood that in the axial cross section of the splash guard 969, the cross section of the first rib 968, the second rib 967 and the third rib 966 is not limited to a triangular shape, but may be a semi-circular, semi-elliptical, trapezoidal or other shape . These structures are very advantageous for the axial draw-forming of the ribs.

Effects

The following are with reference to 9A and 9B describes the technical effects of the ribs of the guide ring of the flat bearing according to this invention.

How 9A shows schematically, according to the prior art, water and other foreign matter can enter the bearing along the path indicated by a dashed arrow and reach the bearing assembly 70 (upper bearing ring 20, rolling element 30, cage 40, lower bearing ring 50).

In this invention, how 9B 12, ribs are formed on the splash guard 969 of the guide ring 960, intending that water and other foreign matter reaching the first clearance G1 collide with the ribs and thereafter being stopped by the ribs, and preventing the foreign matter from overflowing the first Gap G1 to get inside the bearing. Part of the foreign matter rebounds directly from the ribs and then leaves the bearing, part of the foreign matter retained by the ribs can then leave the guide ring 960 under the action of gravity and centrifugal force, for example, through the foreign matter discharge part described above, the guide ring 960 leave.

It is possible to obtain the ribs on the splash guard 969 together with the splash guard 969 or the guide ring 960 by molding. Compared to the prior art design, no new jigs are required for the production of the guide ring 960 and the assembly of the bearing, the assembly method does not need to be changed, the implementation is easy, the cost increase is very small.

The ribs of this invention are an effective complement to the labyrinth seal structure, particularly a non-contact seal structure (see, for example 4 ).

1. (1) In den oben beschriebenen Ausführungsformen wird am Beispiel eines Axialkugellagers das Flachlager dieser Erfindung beschrieben, jedoch sind die Wälzkörper eines Axiallagers nicht auf Kugeln beschränkt, sondern es kann sich auch um Nadelrollen, Zylinderrollen und andere Wälzkörper handeln.
2. (2) Da im Betrieb des Lagers sich der Führungsring dreht, ist es denkbar, dass das Ausbilden einer Vielzahl von unterbrochenen stiftförmigen Strukturen oder gebirgsförmigen Strukturen an der oberen Oberfläche des Spritzschutzes ebenfalls eine bestimmte Wirkung für das Verhindern des Eindringens von Fremdstoffen in das Lager ausüben kann.
3. (3) Das Flachlager dieser Erfindung ist nicht auf die Verwendung für MacPherson-Federbein-Systeme beschränkt. Das Flachlager dieser Erfindung kann außerdem auf andere Szenarien angewendet werden, die den Schutz vor Wasser, Staub und Fremdstoffen erfordern.

Of course, this invention is not limited to the above-described embodiments, but those skilled in the art can make changes and modifications to the above embodiments of this invention under the guidance of this invention without departing from the scope of this invention.

1. (1) In the above-described embodiments, the plane bearing of this invention is described taking a thrust ball bearing as an example, but the rolling elements of a thrust bearing are not limited to balls, but may be needle rollers, cylindrical rollers and other rolling elements.
2. (2) Since the guide ring rotates during operation of the bearing, it is conceivable that forming a plurality of discontinuous pin-shaped structures or mountain-shaped structures on the top surface of the splash guard also exerts a certain effect of preventing foreign matter from entering the bearing can.
3. (3) The flat bearing of this invention is not limited to use for MacPherson strut systems. The flat bearing of this invention can also be applied to other scenarios that require protection from water, dust and foreign matter.

Claims (9)

Flat bearing comprising a cover (210A), a guide ring (160, 260A, 360, 960) and a bearing device (70) arranged between the cover (210A) and the guide ring (160, 260A, 360, 960), the outer Peripheral area of the guide ring (160, 260A, 360, 960) comprises a splash guard (169, 269, 369, 469, 969) extending in the radial direction and in the circumferential direction of the flat bearing (100, 200) and between the outer peripheral area of the cover (210A ) and the splash guard (169, 269, 369, 469, 969) forming a first gap (G1), the splash guard (169, 269, 369, 469, 969) having at least one of the top surface of the splash guard (169, 269, 369, 469, 969) excellently arranged rib (168, 167, 166, 268, 267, 266, 368, 367, 366, 468A, 467A, 466A, 468B, 467B, 466B, 968, 967, 966 ) comprises the rib (168, 167, 166, 268, 267, 266, 368, 367, 366, 468A, 467A, 466A, 468B, 467B, 466B, 968, 967, 966) extending circumferentially continuously or discontinuously and the rib (168, 167, 166, 268, 267, 266, 368, 367, 366, 468A, 467A, 466A, 468B, 467B, 466B, 968, 967, 966) serves to reduce the dimensions of the first gap (G1). , characterized in that the rib (168, 167, 166, 268, 267, 266, 368, 367, 366, 468A, 467A, 466A, 468B, 467B, 466B, 968, 967, 966) has at least one notch (368C, 367C, 366C) extending approximately radially through the rib (168, 167, 166, 268, 267, 266, 368, 367, 366, 468A, 467A, 466A, 468B, 467B, 466B, 968, 967, 966 ) passes through. Flat storage after claim 1 , characterized in that the splash guard (169, 269, 369, 469, 969) comprises at least one foreign matter discharge part, which serves to discharge the foreign matter which the at least one rib (168, 167, 166, 268, 267, 266, 368 , 367, 366, 468A, 467A, 466A, 468B, 467B, 466B, 968, 967, 966). Flat storage after claim 1 or 2 , characterized in that the splash guard (169, 269, 369, 469, 969) has a plurality of ribs (168, 167, 166, 268, 267, 266, 368, 367, 366, 468A, 467A, 466A, 468B, 467B , 466B, 968, 967, 966) and in the radial direction the indentations (368C, 367C, 366C) of adjacent ribs (168, 167, 166, 268, 267, 266, 368, 367, 366, 468A, 467A, 466A , 468B, 467B, 466B, 968, 967, 966) are circumferentially offset. Flat storage after claim 1 , characterized in that in the axial cross section of the splash guard (169, 269, 369, 469, 969) the rib (168, 167, 166, 268, 267, 266, 368, 367, 366, 468A, 467A, 466A, 468B, 467B , 466B, 968, 967, 966) has a triangular, semi-circular, semi-elliptical or trapezoidal cross-section. Flat storage after claim 1 , characterized in that the rib (168, 167, 166, 268, 267, 266, 368, 367, 366, 468A, 467A, 466A, 468B, 467B, 466B, 968, 967, 966) moves relative to the axial direction of the plane bearing (100, 200) extends obliquely as follows: the further it goes to the axial top, the more it approaches the radial outside. Flat storage after claim 1 , characterized in that the guide ring (160, 260A, 360, 960) comprises a hook portion (363) for hooking to the hook portion (363) of the cover (210A), the guide ring (160, 260A, 360, 960) peripherally is provided with at least one inside rib (364A, 364B) laterally or axially below its hook portion (363), the inside rib (364A, 364B) extending circumferentially continuously or discontinuously and serving to form a second gap between the inner peripheral portion of the cover (210A) and the inner peripheral portion of the guide ring (160, 260A, 360, 960). Flat storage after claim 6 , characterized in that the inside rib (364A, 364B) extends inclined relative to the axial direction of the plane bearing (100, 200) as follows: the further it goes to the axial bottom, the more it approaches the radial inside. Flat camp after one of Claims 1 until 7 , characterized in that the flat bearing (100, 200) is an axial bearing for a MacPherson strut system, the bearing device comprises: an upper bearing ring fixedly attached to the cover, a bearing ring (160, 260A, 360, 960) fixed lower bearing ring and a multitude of rolling elements located between the upper bearing ring and the lower bearing ring. Flat bearing comprising a cover (210A), a guide ring (160, 260A, 360, 960) and a bearing device (70) arranged between the cover (210A) and the guide ring (160, 260A, 360, 960), the outer Peripheral area of the guide ring (160, 260A, 360, 960) comprises a splash guard (169, 269, 369, 469, 969) extending in the radial direction and in the circumferential direction of the flat bearing (100, 200) and between the outer peripheral area of the cover (210A ) and the splash guard (169, 269, 369, 469, 969) forming a first gap (G1), the splash guard (169, 269, 369, 469, 969) having at least one of the upper surface of the splash guard (169, 269 , 369, 469, 969) excellently located rib (168, 167, 166, 268, 267, 266, 368, 367, 366, 468A, 467A, 466A, 468B, 467B, 466B, 968, 967, 966) which Rib (168, 167, 166, 268, 267, 266, 368, 367, 366, 468A, 467A, 466A, 468B, 467B, 466B, 968, 967, 966) circumferentially continuous or disco continuously and the rib (168, 167, 166, 268, 267, 266, 368, 367, 366, 468A, 467A, 466A, 468B, 467B, 466B, 968, 967, 966) to reduce the dimensions of the first gap ( G1), characterized in that the splash guard (169, 269, 369, 469, 969) has a large number of ribs (168, 167, 166, 268, 267, 266, 368, 367, 366, 468A, 467A, 466A, 468B, 467B, 466B, 968, 967, 966) discontinuously extending circumferentially and circumferentially adjacent ribs (168, 167, 166, 268, 267, 266, 368, 367 , 366, 468A, 467A, 466A, 468B, 467B, 466B, 968, 967, 966) are offset in the radial direction.

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