CN212615942U

CN212615942U - Hydraulic power-assisted clutch release bearing device

Info

Publication number: CN212615942U
Application number: CN202021241487.XU
Authority: CN
Inventors: 李玉贵; 杨加飞
Original assignee: Leicam Powertrain Nanjing Co ltd
Current assignee: Leicam Powertrain Nanjing Co ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-02-26
Anticipated expiration: 2030-06-30

Abstract

The utility model discloses a hydraulic power-assisted clutch release bearing device, which comprises a shaft body component, wherein the shaft body component is divided into a shaft neck, a shaft shoulder connected with the shaft neck and an overhanging end connected with the shaft shoulder; the bearing component is sleeved on the journal and comprises a bearing inner ring, a bearing outer ring and a rolling body positioned between the bearing inner ring and the bearing outer ring, wherein a first groove is formed in one surface, in contact with the rolling body, of the bearing inner ring, the first groove is divided into a first conical surface and a second conical surface, and the first conical surface and the second conical surface are tangent to the rolling body; the shell is sleeved on the shaft body part and the bearing part, and a plurality of elastic pieces are uniformly arranged between the shell and the shaft shoulder; the cross-sectional shapes of the inner ring, the steel ball and the outer ring of the bearing are changed, larger axial alternating force can be borne, and meanwhile, when the clutch release bearing is vibrated from the outside, the spring can effectively buffer vibration.

Description

Hydraulic power-assisted clutch release bearing device

Technical Field

The utility model belongs to the technical field of clutch bearing and specifically relates to a hydraulic pressure helping hand clutch release bearing device.

Background

Most of the existing clutch release bearing assemblies comprise a shell, a bearing inner ring, a rolling body, a bearing outer ring, sealing covers and a housing which are arranged at two ends of the bearing, in order to ensure that the rotation center of the release bearing coincides with the rotation center of a clutch shaft, the inner diameter of the bearing inner ring adopts a diameter larger than the diameter of a shaft neck on the shell, so as to be beneficial to automatic aligning of the bearing, a certain gap is reserved between the bearing inner ring and the shaft neck of the shell, the gap is open in the working process and is easy to enter dust, the dust entering the bearing can influence the normal work of the bearing, the abrasion of the bearing is increased, meanwhile, the dust and lubricating grease injected into the bearing are combined to form a block, when the bearing rotates at a high speed, the sealing cover at the end part of the bearing is easily damaged, the service life of the bearing is shortened, and further the. Secondly, the existing automobile clutch release bearing has poor damping effect in the using process and is easily influenced by external vibration, the requirement on the clutch release bearing is higher and higher along with the high-speed development of the automobile industry, and a plurality of vehicles with special requirements have higher requirements on the clutch release bearing, particularly the working condition of frequent clutching of urban buses. The bearing is required to be capable of bearing alternating load impact mainly in the axial direction and secondarily in the radial direction, and is high in rotating speed and good in stability; meanwhile, the bearing is required to have good self-lubricating property, sealing property, sand prevention, dust prevention, muddy water and other substances, so that the current bearing cannot meet the special requirements of the vehicles.

SUMMERY OF THE UTILITY MODEL

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments, and in this section as well as in the abstract of the specification and the title of the application may be somewhat simplified or omitted to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplification or omission may not be used to limit the scope of the invention.

The present invention has been made in view of the above and/or other problems occurring in the prior art.

Therefore, the utility model aims to solve the technical problem that the axial load that current release bearing can bear is lower, and the shock attenuation effect is not good, receives external vibrations influence easily.

In order to solve the technical problem, the utility model provides a following technical scheme: a hydraulic power-assisted clutch release bearing device comprises a shaft body component, wherein the shaft body component is divided into a shaft neck, a shaft shoulder connected with the shaft neck and an overhanging end connected with the shaft shoulder; the bearing component is sleeved on the journal and comprises a bearing inner ring, a bearing outer ring and a rolling body positioned between the bearing inner ring and the bearing outer ring, wherein a first groove is formed in one surface, in contact with the rolling body, of the bearing inner ring, the first groove is divided into a first conical surface and a second conical surface, and the first conical surface and the second conical surface are tangent to the rolling body; the shell is sleeved on the shaft body component and the bearing component, and a plurality of elastic pieces are uniformly arranged between the shell and the shaft shoulder.

As a preferred scheme of hydraulic power clutch release bearing device, wherein: a second groove is formed in one surface, in contact with the rolling body, of the bearing outer ring, and is divided into a third conical surface and a fourth conical surface, and the third conical surface and the fourth conical surface are tangent to the rolling body; the bearing outer ring is further provided with an oil filling hole, the oil filling hole penetrates through the bearing outer ring, and a sealing bolt is installed in the oil filling hole.

As a preferred scheme of hydraulic power clutch release bearing device, wherein: the diameter of the shaft shoulder is larger than that of the shaft neck, the shaft shoulder forms an accommodating space along the outer circumferential axis, one end of the elastic piece extends into the accommodating space, and the other end of the elastic piece abuts against the inner wall of the shell.

As a preferred scheme of hydraulic power clutch release bearing device, wherein: the shell is divided into a first shell and a second shell, the first shell is located on the periphery of the shaft shoulder, and the second shell is located on the periphery of the shaft neck.

As a preferred scheme of hydraulic power clutch release bearing device, wherein: the first shell is internally provided with a fixing ring, the fixing ring is positioned between the first shell and the shaft shoulder, the fixing ring is evenly provided with limiting holes which are equal to the elastic pieces along the circumference, and the elastic pieces are positioned in the limiting holes.

As a preferred scheme of hydraulic power clutch release bearing device, wherein: the inner diameter of the bearing inner ring is larger than the outer diameter of the shaft neck, the bearing inner ring extends along the axial direction to form a connecting bulge, the outer end of the second shell extends towards the shaft center to form a cover plate, the inner diameter of the cover plate is consistent with the outer diameter of the connecting bulge, and the cover plate is sleeved on the periphery of the connecting bulge.

As a preferred scheme of hydraulic power clutch release bearing device, wherein: an annular sealing groove is formed in one surface, which is in contact with the bearing component, of the shaft shoulder, and a sealing ring is installed in the annular sealing groove; the sealing ring is divided into a first seal, a second seal and a third seal, the first seal is located in the annular seal groove, the second seal is located between the shaft shoulder and the bearing inner ring, and the third seal is located between the bearing inner ring and the shaft journal.

As a preferred scheme of hydraulic power clutch release bearing device, wherein: the bearing component further comprises bearing sealing covers, and the bearing sealing covers are installed on two end faces of the bearing inner ring and the bearing outer ring.

As a preferred scheme of hydraulic power clutch release bearing device, wherein: a plurality of through holes are formed in the annular sealing groove along the axial direction of the shaft shoulder, penetrate through the shaft shoulder, and are located on the inner side of the first seal.

As a preferred scheme of hydraulic power clutch release bearing device, wherein: the first shell is internally provided with a first elastic piece, the first elastic piece is sleeved on the first shell, and the first elastic piece is arranged in the limiting hole.

The utility model has the advantages that: the cross-sectional shapes of the inner ring, the steel ball and the outer ring of the bearing are changed, the condition of the bearing is structurally solved, four-point contact is formed, larger axial alternating force can be borne, the bearing capacity of the bearing is about 2 times of that of common contact, the self-lubricating property of the bearing is guaranteed simultaneously, the service life of the bearing is prolonged, the self-aligning function is structurally provided, the comprehensive performance of the clutch release bearing is improved, and when the clutch release bearing is vibrated from the outside, the spring can effectively buffer vibration.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor. Wherein:

fig. 1 is a schematic structural diagram of an external shape of a hydraulic power-assisted clutch release bearing device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a bearing component in a hydraulic power clutch release bearing device according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a shaft body of a hydraulic power clutch release bearing device according to an embodiment of the present invention;

fig. 4 is a schematic cross-sectional structural view of a bearing component of a hydraulic power clutch release bearing device according to an embodiment of the present invention;

fig. 5 is a schematic cross-sectional structural view of a hydraulic power clutch release bearing device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a seal ring in a hydraulic power-assisted clutch release bearing device according to an embodiment of the present invention;

fig. 7 is an exploded schematic view of a hydraulic assist clutch release bearing device according to an embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying the present invention are described in detail below with reference to the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Next, the present invention will be described in detail with reference to the schematic drawings, and in the detailed description of the embodiments of the present invention, for convenience of illustration, the sectional view showing the device structure will not be enlarged partially according to the general scale, and the schematic drawings are only examples, and should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

Further still, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with at least one implementation of the invention is included. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1 to 3, the present embodiment provides a hydraulic clutch release bearing device, including a shaft body member 100, the shaft body member 100 being divided into a shaft neck 101, a shaft shoulder 102 connected to the shaft neck 101, and an extending end 103 connected to the shaft shoulder 102; the shaft body part 100 is a hollow shaft, the diameter of a shaft neck 101 is smaller than that of a shaft shoulder 102, and the diameter of an overhanging end 103 is also smaller than that of the shaft shoulder 102; the bearing component 200 is sleeved on the journal 101, and comprises a bearing inner ring 201, a bearing outer ring 202 and a rolling body 203 positioned between the bearing inner ring 201 and the bearing outer ring 202; wherein, the bearing inner ring 201 is sleeved on the journal 101, the shaft shoulder 102 limits the bearing part 200, the rolling element 203 is preferably a ball, the bearing inner ring 201, the bearing outer ring 202 and the rolling element 203 form a bearing, and the rolling element 203 is arranged between the bearing inner ring 201 and the bearing outer ring 202 through a retainer.

Preferably, a first groove 201a is formed on a surface of the bearing inner ring 201 contacting the rolling body 203, the first groove 201a is divided into a first conical surface 201a-1 and a second conical surface 201a-2, the first conical surface 201a-1 and the second conical surface 201a-2 are symmetrical, a channel is formed at the joint of the first conical surface 201a-1 and the second conical surface 201a-2, which is more beneficial to the rapid backflow of lubricating grease and the formation of a lubricating oil film, and the rolling body 203 is tangent to the first conical surface 201a-1 and the second conical surface 201a-2, so that the contact between the rolling body 203 and the bearing inner ring 201 is two-point contact, furthermore, a second groove 202a is formed in one surface of the bearing outer ring 202, which is contacted with the rolling body 203, the second groove 202a is divided into a third conical surface 202a-1 and a fourth conical surface 202a-2, and the third conical surface 202a-1 and the fourth conical surface 202a-2 are tangent to the rolling; the third conical surface 202a-1 and the fourth conical surface 202a-2 are symmetrical to each other, and a groove is formed at the joint, so that the loss of lubricating grease can be reduced, the ball is lubricated and radiated in time, the service life of the bearing is prolonged, four-point contact is formed, larger axial alternating force can be borne, the bearing capacity of the bearing is about 2 times of that of common contact, a lubricating oil film is easily formed under the working state, the lubricating performance is good, and meanwhile, larger axial alternating force can be borne.

Further, the embodiment further includes a housing 300, the housing 300 is sleeved on the shaft body component 100 and the bearing component 200, a plurality of elastic members 400 are uniformly arranged between the housing 300 and the shaft shoulder 102, the elastic members 400 are preferably springs, the axes of the springs are distributed along the radial direction of the shaft shoulder 102, the elastic members 400 mainly play a role in damping the movement between the housing 300 and the shaft shoulder 102, when the bearing component 200 starts to rotate, vibration is easily caused due to a gap between the bearing inner ring 201 and the shaft journal 101, and therefore, a circle of elastic members 400 arranged between the housing 300 and the shaft shoulder 102 can effectively absorb vibration energy and reduce bearing loss. Preferably, the bearing outer ring 202 is further provided with an oil filling hole 202b, the oil filling hole 202b penetrates through the bearing outer ring 202, a sealing bolt Q is installed in the oil filling hole 202b, the oil filling hole 202b is located on one side of the second groove 202a, and in specific implementation, the sealing bolt Q is taken out, and lubricating oil is filled into the bearing through the oil filling hole 202b for lubrication.

Example 2

Referring to fig. 1 to 7, a second embodiment of the present invention is based on the previous embodiment, and is different from the previous embodiment in that: the present embodiment includes a shaft body 100, the shaft body 100 is divided into a shaft neck 101, a shaft shoulder 102 connected to the shaft neck 101, and an overhanging end 103 connected to the shaft shoulder 102; the shaft body part 100 is a hollow shaft, the diameter of a shaft neck 101 is smaller than that of a shaft shoulder 102, and the diameter of an overhanging end 103 is also smaller than that of the shaft shoulder 102; the bearing component 200 is sleeved on the journal 101, and comprises a bearing inner ring 201, a bearing outer ring 202 and a rolling body 203 positioned between the bearing inner ring 201 and the bearing outer ring 202; wherein, the bearing inner ring 201 is sleeved on the journal 101, the shaft shoulder 102 limits the bearing part 200, the rolling element 203 is preferably a ball, the bearing inner ring 201, the bearing outer ring 202 and the rolling element 203 form a bearing, and the rolling element 203 is arranged between the bearing inner ring 201 and the bearing outer ring 202 through a retainer.

Different from the previous embodiment, the diameter of shaft shoulder 102 is greater than the diameter of axle journal 101, play a spacing effect to bearing part 200, shaft shoulder 102 forms accommodation space M along the outer peripheral axle center, accommodation space M is an annular space, wherein the one end of elastic component 400 spring promptly stretches into in accommodation space M, the other end is contradicted at shell 300 inner wall, when shell 300 or shaft shoulder 102 rocked like this, around absorbing the energy of rapping around the elastic component 400 of shell 300 inner ring, carry out the shock attenuation, prevent excessively rocking, produce the damage to the bearing.

Preferably, the housing 300 is divided into a first housing 301 and a second housing 302, and the first housing 301 and the second housing 302 are integrally formed, wherein the first housing 301 is located at the periphery of the shaft shoulder 102 and covers the outer contour of the shaft shoulder 102, and the second housing 302 is located at the periphery of the shaft journal 101 and covers the outer contour of the shaft journal 101.

Further, a fixing ring 500 is arranged in the first housing 301, the fixing ring 500 mainly prevents the elastic element 400 from shifting in the accommodating space M and affecting the damping effect, the fixing ring 500 is located between the first housing 301 and the shaft shoulder 102, preferably, the fixing ring 500 is fixedly connected to the inner wall of the first housing 301, and the fixing ring 500 is uniformly provided with a limiting hole 401 equal to the elastic element 400 along the circumference, the axis of the limiting hole 401 points to the center of the fixing ring 500, the diameter of the limiting hole 401 is slightly larger than the outer contour diameter of the elastic element 400, and the elastic element 400 is located in the limiting hole 401, so that the elastic element 400 can stretch and deform in the limiting hole 401, and large deviation cannot occur. The inner diameter of the bearing inner race 201 is larger than the outer diameter of the journal 101, avoiding direct contact with the journal 101.

Further, the bearing inner ring 201 extends axially to form a connecting protrusion 201b, the connecting protrusion 201b is connected with an external device, the outer end of the second housing 302 extends toward the axis to form a cover plate 302a, the inner diameter of the cover plate 302a is consistent with the outer diameter of the connecting protrusion 201b, the cover plate 302a is sleeved on the periphery of the connecting protrusion 201b and covers the outer end face of the bearing, and the cover plate 302a prevents dust from falling into the inside of the release bearing.

Preferably, an annular seal groove 102a is provided on the other end surface of the shaft shoulder 102, which is in contact with the bearing member 200, and a seal ring 600 is installed in the annular seal groove 102 a. When the bearing rotates, on one hand, lubricating oil cannot leak out, and on the other hand, external dust cannot enter the inside. The seal ring 600 is divided into a first seal 601, a second seal 602, and a third seal 603, and the first seal 601, the second seal 602, and the third seal 603 are integrated into a whole, the first seal 601 is located in the annular seal groove 102a, the second seal 602 is located between the shaft shoulder 102 and the bearing inner ring 201, and the third seal 603 is located between the bearing inner ring 201 and the journal 101.

Preferably, the bearing component 200 further comprises a bearing seal cover 204, the bearing seal cover 204 is mounted on two end faces of the bearing inner ring 201 and the bearing outer ring 202, and the bearing component 200 can be filled with lubricating oil and the like by detaching the bearing seal cover 204.

Preferably, a plurality of through holes 102b are formed in the annular seal groove 102a along the axial direction of the shaft shoulder 102, the through holes 102b penetrate the shaft shoulder 102, and the through holes 102b are located inside the first seal 601. Dust and impurities entering the end face between the end face shoulder 102 of the separation bearing are accumulated in the annular sealing groove 102a after being blocked by the sealing ring 600, the sealing ring 600 rotates along with the separation bearing in the rotation process of the separation bearing, so that the dust and the impurities accumulated in the annular sealing groove 102a rotate, and when passing through the through hole 102b, the dust and the impurities can be timely discharged from the through hole 102b, thereby effectively preventing the deposition of the dust and the impurities, and the through hole 102b plays a role of a dust discharge channel.

The working principle of the embodiment is as follows: when the bearing component 200 rotates, relative offset and vibration can occur between the housing 300 and the bearing component 200, which easily causes damage to the bearing component 200, at this time, because of the existence of the elastic piece 400, and the elastic piece 400 is distributed on the circumference of the housing 300, which can absorb vibration caused in the rotating process, the bearing component 200 forms four-point contact, which can bear larger axial alternating force, and the bearing capacity of the bearing component is about 2 times of that of common contact, thus under the working state, a lubricating oil film is easily formed, which has good lubricating performance and can bear larger axial alternating force. On the other hand, the seal ring 600 can effectively seal the end face of the release bearing with the end face of the shaft shoulder 102, and effectively prevent dust and impurities from entering the gap between the bearing inner ring and the shaft neck of the release bearing from the gap between the two end faces, thereby ensuring the service life of the bearing and the safe and stable operation of the automobile clutch.

Example 3

Referring to fig. 1 to 7, in order to implement the third embodiment of the present invention, the embodiment is based on the previous embodiment, and is different from the previous embodiment: in order to further prevent the elastic element 400 from deviating in the first housing 301, the first housing 301 is further provided with guide elements 301a, one end of the elastic element 400, namely a spring, is fixed on the guide element 301a, the guide element 301a is cylindrical, the guide elements 301a are uniformly distributed in the first housing 301, the number of the guide elements is consistent with that of the elastic element 400, the elastic element 400 is sleeved on the guide element 301a and is arranged in the limiting hole 401, and thus, the axial position of the elastic element 400 is fixed, and the shock absorption effect of the release bearing is better.

It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.

It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. Hydraulic pressure helping hand clutch release bearing device which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the shaft body component (100) is divided into a shaft neck (101), a shaft shoulder (102) connected with the shaft neck (101), and an overhanging end (103) connected with the shaft shoulder (102);

the bearing component (200) is sleeved on the journal (101) and comprises a bearing inner ring (201), a bearing outer ring (202) and a rolling body (203) positioned between the bearing inner ring (201) and the bearing outer ring (202), a first groove (201a) is formed in one surface, in contact with the rolling body (203), of the bearing inner ring (201), the first groove (201a) is divided into a first conical surface (201a-1) and a second conical surface (201a-2), and the first conical surface (201a-1) and the second conical surface (201a-2) are tangent to the rolling body (203);

the bearing comprises a shell (300), wherein the shell (300) is sleeved on the shaft body part (100) and the bearing part (200), and a plurality of elastic pieces (400) are uniformly arranged between the shell (300) and the shaft shoulder (102).

2. The hydraulically assisted clutch release bearing assembly of claim 1, wherein: a second groove (202a) is formed in one surface, which is in contact with the rolling body (203), of the bearing outer ring (202), the second groove (202a) is divided into a third conical surface (202a-1) and a fourth conical surface (202a-2), and the third conical surface (202a-1) and the fourth conical surface (202a-2) are tangent to the rolling body (203); bearing inner race (202) still is provided with oil filler point (202b), oil filler point (202b) pass bearing inner race (202), install sealing bolt (Q) in oil filler point (202 b).

3. The hydraulically assisted clutch release bearing assembly of claim 2, wherein: the diameter of the shaft shoulder (102) is larger than that of the shaft neck (101), an accommodating space (M) is formed by the shaft shoulder (102) along the outer circumferential axis, one end of the elastic piece (400) extends into the accommodating space (M), and the other end of the elastic piece is abutted against the inner wall of the shell (300).

4. The hydraulic power clutch release bearing device according to any one of claims 1 to 3, characterized in that: the shell (300) is divided into a first shell (301) and a second shell (302), the first shell (301) is located on the periphery of the shaft shoulder (102), and the second shell (302) is located on the periphery of the shaft neck (101).

5. The hydraulically assisted clutch release bearing assembly of claim 4, wherein: be provided with retainer plate (500) in first casing (301), retainer plate (500) are located first casing (301) with between the shaft shoulder (102), retainer plate (500) along the circumference evenly be provided with spacing hole (401) of elastic component (400) equivalent, elastic component (400) are located in spacing hole (401).

6. The hydraulically assisted clutch release bearing assembly of claim 5, wherein: the internal diameter of bearing inner race (201) is greater than the external diameter of axle journal (101), bearing inner race (201) forms connection protrusion (201b) along axial extension, second casing (302) outer end extends to the axle center and forms apron (302a), the internal diameter of apron (302a) with the external diameter of connection protrusion (201b) is unanimous, apron (302a) cover is established connection protrusion (201b) periphery.

7. The hydraulically assisted clutch release bearing assembly of claim 6, wherein: an annular sealing groove (102a) is formed in one surface, which is in contact with the bearing component (200), of the shaft shoulder (102), and a sealing ring (600) is installed in the annular sealing groove (102 a); the sealing ring (600) is divided into a first seal (601), a second seal (602) and a third seal (603), the first seal (601) is located in the annular sealing groove (102a), the second seal (602) is located between the shaft shoulder (102) and the bearing inner ring (201), and the third seal (603) is located between the bearing inner ring (201) and the shaft journal (101).

8. The hydraulically assisted clutch release bearing assembly of claim 7, wherein: the bearing component (200) further comprises a bearing sealing cover (204), and the bearing sealing cover (204) is installed on two end faces of the bearing inner ring (201) and the bearing outer ring (202).

9. The hydraulically assisted clutch release bearing assembly of claim 8, wherein: a plurality of through holes (102b) are formed in the annular sealing groove (102a) along the axial direction of the shaft shoulder (102), the through holes (102b) penetrate through the shaft shoulder (102), and the through holes (102b) are located on the inner side of the first seal (601).

10. The hydraulically assisted clutch release bearing assembly of claim 9, wherein: the first shell (301) is internally provided with guide pieces (301a), the guide pieces (301a) are cylindrical, the guide pieces (301a) are uniformly distributed in the first shell (301), the number of the guide pieces is consistent with that of the elastic pieces (400), and the elastic pieces (400) are sleeved on the guide pieces (301a) and are arranged in the limiting holes (401).