WO2019200509A1

WO2019200509A1 - Bearing, clutch operation mechanism, and clutch

Info

Publication number: WO2019200509A1
Application number: PCT/CN2018/083200
Authority: WO
Inventors: 瓦勒瑞⋅科特加罗; 郑飞翔
Original assignee: 舍弗勒技术股份两合公司
Priority date: 2018-04-16
Filing date: 2018-04-16
Publication date: 2019-10-24

Abstract

A bearing for a clutch, a clutch operation mechanism, and a clutch. The bearing (11) comprises an inner ring (110), an outer ring, and a rolling body provided between the inner ring and the outer ring, wherein the inner ring (110) comprises: an annular abutting part (111), the annular abutting part radially extending from the inner ring (110), and an annular end surface (1110) of the annular abutting part (111) being used for abutting against a first end surface of a preloaded spring (12), wherein the preloaded spring (12) is used for applying an axial force to the bearing (11); and a protrusion part (112), the protrusion part axially extending from the inner ring (110), so that when the preloaded spring (12) abuts against the annular end surface (1110) of the annular abutting part (111), the tail end at the first end surface of the preloaded spring (12) abuts against the protrusion part (112) to prevent relative rotation between the preloaded spring (12) and the inner ring (110). The clutch has the characteristics of being small in the number of components and easy to mount.

Description

Bearing, clutch operating mechanism and clutch

Technical field

This invention relates to the field of clutches and, in particular, to bearings for clutches, clutch operating mechanisms and clutches.

Background technique

Clutches are widely used for the separation of internal combustion engines from transmissions. Generally, the friction clutch includes an active portion, a driven portion, a pressing mechanism, and an operating mechanism, wherein the pressing mechanism is for ensuring that power is transmitted from the active portion to the driven portion when the clutch is in the engaged state, and the operating mechanism is used to enter the clutch Separated state. The operating mechanism may include a separating bearing, a preloading spring and a cylinder, wherein the separating bearing is sleeved at one end of the cylinder and movable in the axial direction of the cylinder, and one end of the preloading spring is connected to the separating bearing and the other end is connected to On the housing of the cylinder, and the pretensioning spring is used to apply an axial force to the release bearing. Further, the operating mechanism may further include a dust cover disposed outside the cylinder, the dust cover having one end connected to the split bearing and the other end connected to the casing of the cylinder.

However, in order to connect the pretension spring and the dust cover to the release bearing, first, it is necessary to connect the pretension spring and the dust cover to the additional member, and then, the preloaded spring and the dust cover are connected. Additional components are attached to the split bearing. Therefore, in the clutch of such a structure, the number of parts is large, and thus the installation is complicated.

Therefore, a clutch having a small number of parts and a simple installation is desired.

Summary of the invention

It is an object of the present invention to provide a clutch that has a small number of parts and is simple to install.

According to an aspect of the present invention, a bearing for a clutch includes an inner ring, an outer ring, and a rolling body disposed therebetween,

Wherein the inner circle comprises:

An annular abutting portion extending radially from the inner ring, and an annular end surface of the annular abutting portion is for abutting against the first end surface of the pretensioning spring, wherein the pretensioning spring is Applying an axial force to the bearing; and

a protrusion extending axially from the inner ring such that the first pretensioning spring abuts against the annular end surface of the annular abutment An end at the end face abuts against the projection to prevent relative rotation between the pretension spring and the inner ring.

According to an embodiment of the invention, the inner ring further includes a dust cover engagement portion for mating with the dust cover.

According to an embodiment of the invention, the dust cover fitting portion includes a first axial stop portion and a second axial stop portion extending radially from the inner ring, the first axial stop portion And the second axial stop is spaced apart in the axial direction of the inner ring to form a gap for engaging one end of the dust cover.

According to an embodiment of the invention, the annular abutment extends radially outward from the inner ring.

According to an embodiment of the invention, the first axial stop and the second axial stop extend radially outward from the inner ring.

According to an embodiment of the invention, the first axial stop and the second axial stop do not overlap each other in the circumferential direction of the inner ring.

According to an embodiment of the invention, the first axial stop and the second axial stop are fan-shaped members.

According to an embodiment of the invention, the first axial stop, the second axial stop and the annular abutment are sequentially disposed at intervals in the axial direction of the inner ring.

According to an embodiment of the invention, the first axial stop is formed as the end of the inner ring.

According to an embodiment of the invention, the bearing comprises a plurality of the first axial stop and the second axial stop.

According to a further aspect of the present invention, there is also provided a clutch operating mechanism comprising the above bearing and a preloading spring, the bearing for bringing the clutch into a disengaged state, wherein the first end face of the pretensioning spring abuts The bearing and the second end face of the pretension spring abut against the housing of the clutch operating mechanism.

According to a further aspect of the present invention, there is also provided a clutch operating mechanism comprising the above bearing, a pretensioning spring and a dust cover, the bearing for causing a clutch to enter a disengaged state, wherein the first of the preloading springs An end surface abuts against the bearing and a second end surface of the pretension spring abuts against a housing of the clutch operating mechanism, and one end of the dust cover is engaged with the bearing and the dust cover The other end is connected to the housing.

According to a further aspect of the invention, there is also provided a clutch comprising the above described clutch operating mechanism.

Since the bearing for the clutch according to the present invention can be directly connected to the pretension spring and the dust cover, additional members for connecting the pretension spring and the dust cover are no longer required, thereby reducing the number of parts and simplifying the mounting. Therefore, the clutch according to the present invention has an advantage that the number of parts is small and the installation is simple.

DRAWINGS

Figure 1 shows a schematic view of a clutch operating mechanism in accordance with the present invention.

Figure 2 shows a schematic view of a bearing for a clutch according to the invention.

detailed description

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of a bearing for a clutch, a clutch operating mechanism, and a clutch according to the present invention will be described with reference to the accompanying drawings. The following detailed description and the annexed drawings are intended to illustrate the embodiments of the invention

Figure 1 shows a schematic view of a clutch operating mechanism in accordance with the present invention. A clutch operating mechanism according to the present invention will now be described with reference to FIG.

As shown in FIG. 1, in the clutch according to the present invention, the clutch operating mechanism 10 includes a bearing 11, a pretension spring 12, and a housing 13. The upper end of the pretension spring 12 abuts against the inner ring 110 of the bearing 11, and the lower end of the pretension spring 12 abuts against the housing 13. The preload spring 12 is used to apply an axial force to the bearing 11 during the vertical movement of the bearing 11. Therefore, in the clutch according to the present invention, the pretensioning spring directly abuts against the inner ring of the bearing, and the inner ring of the bearing is provided with a structure for preventing the inner ring from rotating relative to the pretensioning spring, which will be referred to hereinafter. Figure 2 is described in detail.

In addition, in order to prevent substances such as dust from entering the clutch operating mechanism 10, a dust cover 14 is provided, one end of which is engaged with the inner ring 110 of the bearing 11, and the other end of the dust cover 14 and the housing 13 Match. Accordingly, the inner ring 110 of the bearing 11 is provided with a dust cover fitting portion that cooperates with the dust cover 14, which will be described in detail below with reference to FIG. Therefore, in the clutch according to the present invention, the pretension spring is directly fitted to the inner ring of the bearing.

Figure 2 shows a schematic view of a bearing for a clutch according to the invention. The bearing for a clutch of the present invention will be described below with reference to FIG.

As shown in FIG. 2, the inner ring 110 includes an annular abutment 111 and a projection 112, wherein the annular abutment 111 extends radially outward from the inner ring 110. It will be understood by those skilled in the art that when the annular abutting portion 111 extends radially outward from the inner ring 110, the extended portion is formed into an annular structure which constitutes a ring shape of the annular abutting portion 111. The end surface 1110, and the annular end surface 1110 of the annular abutting portion 111 is for abutting against the first end surface of the pretension spring 12, that is, as shown in FIG. 1, the annular end surface 1110 is for abutting against the pretension spring 12 Upper end face. It will be understood by those skilled in the art that the annular abutment 111 of the inner ring 110 according to the present invention is not limited to extend radially outward from the inner ring 110. For example, in some cases, the annular abutment 111 may also The inner ring 110 extends radially inward as long as the annular abutment 111 can extend radially from the inner ring 110 a distance to form an annular end face for abutting against the first end face of the pretension spring 12. And, the protruding portion 112 protrudes axially from the inner ring 110 such that the pretensioning spring 12 pretensions the end at the first end surface of the spring 12 when abutting against the annular end surface 1110 of the annular abutting portion 111 (ie, The end of the upper end surface of the pretension spring 12 in Fig. 1 abuts against the projection 112 to prevent relative rotation between the pretension spring 12 and the inner ring 110. A person skilled in the art can understand that in order to abut against the annular end surface 1110 of the annular abutting portion 111 when the pretensioning spring 12 abuts against the annular end surface 1110 of the annular abutting portion 111, the protruding portion 112 can abut against the pretensioning spring 12 at the first end surface of the annular end surface 1110. The end portion abuts, and the protruding portion 112 protrudes from the axial direction of the inner ring 110 to be close to the end of the pretension spring 12 at the first end face of the annular end surface 1110. For example, the protrusion 112 may extend axially from the annular end surface 1110 of the annular abutment 111, but the protrusion according to the present invention is not limited thereto, and the protrusion may be axially from other positions of the inner ring The extension is as long as the protruding portion extends to abut against the end of the pretension spring 12 at the end face of the annular end surface 1110.

Further, as shown in FIG. 2, the inner ring 110 further includes a dust cover fitting portion for engaging with the dust cover 13. The dust cover fitting portion includes a first axial stopper portion 113 and a second axial stopper portion 114 that extend radially outward from the inner ring 110, and the first axial stopper portion 113 and the second shaft portion The stopper portion 114 is spaced apart from the axial direction of the inner ring 110 to form a gap 115 for engaging one end of the dust cover 13 (the upper end of the dust cover 13 in Fig. 1) to prevent When the dust cover 13 is fitted to one end of the bearing 11, it is tilted up and down with respect to the bearing. Specifically, as shown in FIG. 2, the first axial stop portion 113 and the second axial stop portion 114 extend radially outward from the inner ring 110 to form a fan-shaped annular member, and the first axial stop The movable portion 113 and the second axial stopper portion 114 do not overlap each other in the circumferential direction of the inner ring 110, so that the dust cover 13 can be smoothly engaged in the gap 115. Also, the inner ring 110 of the bearing includes three pairs of the first axial stop portion 113 and the second axial stop portion 114 to enable the dust cover 13 to be securely engaged in the gap 115. However, those skilled in the art will appreciate that the first axial stop and the second axial stop according to the present invention are not limited to fan-shaped annular members that extend radially outward from the inner ring, for example, those skilled in the art. The first axial stop portion and the second axial stop portion may be disposed to extend radially inward from the inner ring according to actual conditions, and the two retaining portions are shaped to be capable of engaging the dust cover. Any shape of one end, for example, a rectangular shape or an irregular shape; moreover, the number of the first axial stopper and the second axial stopper according to the present invention is not limited to three pairs, for example, those skilled in the art may The first axial stop and the second axial stop are arranged to be greater than 3 pairs or less than 3 pairs, and the first axial stop and the second axial stop can also be The number is set to be different from each other as long as the dust cover can be engaged with the inner ring.

In the inner ring 110 shown in FIG. 2, the first axial stopper portion 113, the second axial stopper portion 114, and the annular abutting portion 111 are sequentially disposed at intervals in the axial direction of the inner ring 110, and The first axial stopping portion 113 is formed as an end of the inner ring 110, and the second axial stopping portion 114 and the protruding portion 112 both extend axially from the annular end surface 1110 of the annular abutting portion 111, in order to It is convenient to observe whether the end at the first end surface of the pretension spring 12 abuts against the protruding portion 112 when the first end surface of the pretension spring 12 abuts against the annular end surface 1110, and the second shaft adjacent to the protruding portion 112 An opening is also provided between the stopper portion 114 and the protruding portion 112. It will be understood by those skilled in the art that the above arrangement of the first axial stop, the second axial stop and the annular abutment is merely an example, for example, on the inner ring according to the present invention, the first axial direction The stopper portion, the second axial stopper portion and the annular abutting portion are sequentially disposed at intervals in the axial direction of the inner ring, and the annular abutting portion is formed as the end of the inner ring, and those skilled in the art can also The relative positions of the above components on the inner ring are set differently from the above examples depending on the actual situation.

It will be understood by those skilled in the art that the dust cover fitting portion provided on the bearing for the clutch according to the present invention is not limited to the above-described first axial stopper portion and second axial stopper portion, and those skilled in the art can In the case where the dust cover fitting portion is provided, for example, the dust cover fitting portion may be a screw, an adhesive or the like.

In summary, since the bearing for the clutch according to the present invention can be directly connected to the preload spring and the dust cover, it is no longer necessary to connect the additional members of the pretension spring and the dust cover, thereby reducing the number of parts. And simplify the installation. Therefore, the clutch according to the present invention has an advantage that the number of parts is small and the installation is simple.

The present invention has been described with reference to the drawings, but the invention is not limited to the specific embodiments described above, and the scope of the invention should be defined by the claims and their equivalents.

Claims

A bearing (11) for a clutch, comprising an inner ring (110), an outer ring and a rolling body disposed therebetween

The inner ring (110) comprises:

An annular abutting portion (111) extending radially from the inner ring (110), and an annular end surface (1110) of the annular abutting portion (111) is for abutting against the pretensioning spring ( a first end face of 12), wherein the pretension spring (12) is for applying an axial force to the bearing (11);

a protruding portion (112) axially protruding from the inner ring (110) such that the pretensioning spring (12) abuts against the annular end surface of the annular abutting portion (111) (1110), an end at the first end face of the pretension spring (12) abuts against the protrusion (112) to prevent the pretension spring (12) and the inner ring ( 110) Relative rotation between.
The bearing (11) of claim 1 wherein said inner ring (110) further comprises a dust cover mating portion for mating with the dust cover (14).
The bearing (11) according to claim 2, wherein the dust cover fitting portion includes a first axial stop portion (113) and a second axial direction extending radially from the inner ring (110) a stopper (114), the first axial stopper (113) and the second axial stopper (114) are spaced apart in the axial direction of the inner ring (110) to form a gap ( 115), the gap (115) is used to engage one end of the dust cover (14).
The bearing (11) according to claim 3, wherein the annular abutment (111) extends radially outward from the inner ring (110).
The bearing (11) according to claim 4, wherein the first axial stop (113) and the second axial stop (114) are radially from the inner ring (110) Extend outward.
The bearing (11) according to claim 5, wherein the first axial stop (113) and the second axial stop (114) are in the circumferential direction of the inner ring (110) Do not overlap each other.
The bearing (11) according to claim 6, wherein the first axial stop (113) and the second axial stop (114) are fan-shaped members.
The bearing (11) according to claim 7, wherein the first axial stop (113), the second axial stop (114), and the annular abutment (111) Arranged in sequence in the axial direction of the inner ring (110).
The bearing (11) according to claim 8, wherein the first axial stop (113) is formed as an end of the inner ring (110).
A bearing (11) according to claim 9, wherein said bearing (11) comprises a plurality of said first axial stop (113) and said second axial stop (114).
A clutch operating mechanism (10) comprising the bearing (11) of the preceding claim 1 and a preloading spring (12) for causing the clutch to enter a disengaged state, wherein the pretensioning A first end face of the spring (12) abuts against the bearing (11) and a second end face of the pretension spring (12) abuts against a housing (13) of the clutch operating mechanism (10).
A clutch operating mechanism (10) comprising the bearing (11), the pretensioning spring (12) and the dust cover (14) according to any one of 2 to 10, wherein the bearing (11) is used to make a clutch Entering a disengaged state, wherein a first end surface of the pretensioning spring (12) abuts against the bearing (11) and a second end surface of the pretensioning spring (12) abuts against the clutch operating mechanism (10) a housing (13), and one end of the dust cover (14) is engaged with the bearing (11) and the other end of the dust cover (14) is connected to the housing (13).
A clutch comprising the clutch operating mechanism (10) of claim 11 or 12.