CN116171355B - Limiting member for dual clutch, dual clutch and pre-assembly method thereof, and assembly method of transmission - Google Patents
Limiting member for dual clutch, dual clutch and pre-assembly method thereof, and assembly method of transmission Download PDFInfo
- Publication number
- CN116171355B CN116171355B CN202080105016.2A CN202080105016A CN116171355B CN 116171355 B CN116171355 B CN 116171355B CN 202080105016 A CN202080105016 A CN 202080105016A CN 116171355 B CN116171355 B CN 116171355B
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- clutch
- limiter
- double clutch
- hubs
- assemblies
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/10—Clutch systems with a plurality of fluid-actuated clutches
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
- F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
- F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
- F16D25/0635—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
- F16D25/0638—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs with more than two discs, e.g. multiple lamellae
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/12—Details not specific to one of the before-mentioned types
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
A limiter for a double clutch includes a cylindrical body portion (41) and a plurality of first engaging portions provided to a portion of the body portion (41) for opposing inner hubs (11, 21) of two clutch assemblies (1, 2) of the double clutch and capable of mating engagement with a second engaging portion of the inner hubs (11, 21) so that the inner hubs of the two clutch assemblies (1, 2) and the limiter (4) are relatively fixed in a coaxial manner at least in circumferential and radial directions (R) of the double clutch. A dual clutch including the limiter, a method of pre-assembling the same, and a method of assembling a transmission including the dual clutch are also provided. The limiting piece is utilized to avoid the situation that the spline of the two inner hubs in the double clutch in the pre-assembled state is misplaced and the inner hubs are not coaxial with the connecting sleeve, so that the problem that the double clutch cannot be smoothly installed on the shaft of the transmission due to the adverse situations is solved, and the double clutch is easy to install.
Description
Technical Field
The present invention relates to the field of clutches for vehicles, and in particular to a limiter for a double clutch, a double clutch including the same, a pre-assembly method thereof, and an assembly method of a transmission including the double clutch.
Background
A dual clutch includes two clutch assemblies and a centering slave cylinder. Specifically, each clutch assembly includes an inner hub for fixed mounting to a shaft (e.g., an input shaft) of the transmission, an outer hub located radially outward of the inner hub, and a clutch unit located between the inner and outer hubs. The inner hub is formed with splines for rotationally fixed coupling with a shaft of the transmission. The clutch unit includes friction plates and pressure plates alternately arranged in an axial direction of the clutch assembly, one of the friction plates and pressure plates being rotatably (i.e., relatively non-rotatably) mounted to the inner hub, the other being rotatably mounted to the outer hub. The centering slave cylinder includes a housing, a piston mounted to the housing, a bearing, and a preload spring. In a state in which the double clutch is mounted to the shaft of the transmission, the centering driven cylinder is mounted between the two clutch assemblies in the axial direction of the double clutch, and the preload spring applies a preload spring force to the two clutch assemblies located on both sides via the piston and the bearing.
But before the dual clutch is not mounted to the shaft of the transmission, relative rotation of the two inner hubs may occur such that there may be misalignment of the splines of the two inner hubs. This will prevent the double clutch from being mounted smoothly on the shaft of the transmission.
Disclosure of Invention
The present invention has been made in view of the above-mentioned problems of the prior art. An object of the present invention is to provide a limiter for a double clutch, which can prevent misalignment of splines of inner hubs of two clutch assemblies and misalignment of the inner hubs with a connecting sleeve in the double clutch in a pre-assembled state, and a double clutch including the same, and a pre-assembling method thereof. Another object of the present invention is to provide an assembling method of a transmission including the above-mentioned dual clutch, which avoids the misalignment of the splines of the inner hubs and the non-coaxiality of the inner hubs and the connecting sleeve of the two clutch assemblies in the pre-assembled state by using the limiting member, thereby eliminating the problem that these inconveniences cause the dual clutch to be not smoothly mounted to the shaft of the transmission.
In order to achieve the above object, the present invention adopts the following technical scheme.
The invention provides a limiting piece for a double clutch, which comprises the following components:
a body part formed in a cylindrical shape, and
A plurality of first engaging portions provided to portions of the body portion for opposing inner hubs of two clutch assemblies of the double clutch and matingly engageable with second engaging portions of the inner hubs so that the inner hubs of the two clutch assemblies are relatively fixed with the limiter in a coaxial manner at least in circumferential and radial directions of the double clutch.
Preferably, the first engagement portions are disposed axially extending and evenly distributed along the circumferential direction of the body portion on either side of the axial direction of the body portion.
More preferably, the first engaging portion is a protruding portion protruding from an axial end face of the body portion, at least two protruding portions are provided on either side in an axial direction of the body portion, and/or
The first joint part is a concave part which is concave from the axial end surface of the body part, and at least two concave parts are arranged on any side of the axial direction of the body part.
More preferably, an outer peripheral surface of each of the convex portions or the concave portions is flush with an outer peripheral surface of the body portion and/or an inner peripheral surface of each of the convex portions or the concave portions is flush with an inner peripheral surface of the body portion.
More preferably, the body portion is formed with a plurality of oil holes penetrating in the radial direction.
The invention also provides a dual clutch comprising:
two clutch assemblies, each clutch assembly comprising an inner hub, an outer hub, and a clutch unit located between the inner hub and the outer hub;
A centering slave cylinder installed between the two clutch assemblies in an axial direction of the dual clutch and controlling engagement or disengagement of the clutch unit, and
The limiter for a double clutch according to any one of the above technical solutions, wherein the limiter is interposed between inner hubs of the two clutch assemblies in the axial direction and is detachably mounted to the inner hubs, so that the inner hubs of the two clutch assemblies and the limiter are relatively fixed in at least the circumferential direction and the radial direction of the double clutch.
Preferably, an axial end surface of the inner hub opposite to the stopper is formed with a second engagement portion that mates with the first engagement portion of the stopper, the second engagement portion being formed as a recessed portion recessed from the axial end surface or a protruding portion protruding from the axial end surface.
More preferably, the inner hub includes an inner sleeve formed with a spline for rotationally-engaging with a shaft of the transmission, an outer sleeve located radially outward of the inner sleeve, and a connecting portion for connecting the inner sleeve and the outer sleeve, the second engaging portion being formed at the inner sleeve.
More preferably, the centering slave cylinder is located radially outside the stopper, and the centering slave cylinder is formed with an oil guide surface opposite to the oil hole of the stopper.
The invention also provides a preassembling method of the double clutch according to any one of the technical schemes, which comprises the following steps:
The centering slave cylinder and the dual clutch limiter are mounted between the two clutch assemblies and the first engagement portion of the dual clutch limiter is engaged with the second engagement portion of the inner hubs of the two clutch assemblies, the dual clutch limiter, the centering slave cylinder and the two clutch assemblies forming a pre-assembled dual clutch in which the dual clutch limiter is relatively fixed with the inner hubs of the two clutch assemblies and the splines of the inner hubs of the two clutch assemblies are aligned in a coaxial manner.
Preferably, the preassembly method further comprises:
A plurality of fasteners are mounted to the outer hubs of the two clutch assemblies such that the outer hubs of the two clutch assemblies are relatively fixed in position, at least axially and circumferentially.
More preferably, the fixing member includes a main body portion and a plurality of fixing posts protruding from the main body portion, the fixing posts of the same fixing member protruding into the holes of the outer hubs of the two clutch assemblies, respectively.
The invention also provides an assembling method of the double clutch transmission, which comprises any one of the technical schemes, and the assembling method comprises the following steps:
Mounting the centering slave cylinder and the dual clutch limiter between the two clutch assemblies and engaging a first engagement portion of the dual clutch limiter with a second engagement portion of the inner hubs of the two clutch assemblies, the dual clutch limiter, the centering slave cylinder and the two clutch assemblies forming a pre-assembled dual clutch in which the dual clutch limiter is relatively fixed to the inner hubs of the two clutch assemblies and the splines of the inner hubs of the two clutch assemblies are aligned, and
A transmission mechanism comprising a pre-assembled dual clutch is mounted to a shaft of a transmission such that inner hubs of the two clutch assemblies and the limiter are nested on the shaft.
Preferably, the pre-assembled double clutch is a double clutch pre-assembled by the pre-assembling method according to any one of the above technical solutions.
More preferably, the assembling method further comprises:
after the pre-assembled dual clutch is mounted to the transmission shaft, the fixture is disassembled from the outer hubs of the two clutch assemblies.
By adopting the technical scheme, the invention provides a limiting piece for a double clutch, the double clutch comprising the limiting piece and a preassembling method of the double clutch. In the double clutch, the tubular limiting piece can enable the inner hub of the double clutch to be fixed relative to the limiting piece at least in the radial direction and the circumferential direction of the double clutch, so that the situation that the spline dislocation of the inner hubs of the two clutch assemblies and the fact that the inner hubs are not coaxial with the connecting sleeve occur in the double clutch in a preassembled state is avoided. In this way, in the assembly method of the transmission comprising the double clutch, the situation that the spline of the inner hubs of the two clutch assemblies are misplaced and the inner hubs are not coaxial with the connecting sleeve in the double clutch in the preassembled state is avoided by utilizing the limiting piece, so that the problem that the double clutch cannot be smoothly installed on the shaft of the transmission due to the adverse situations is solved, and the double clutch is easy to install.
Drawings
Fig. 1 is a schematic cross-sectional view illustrating a dual clutch according to an embodiment of the present invention in a preassembled state.
Fig. 2a is a schematic perspective view showing a first inner hub of the dual clutch of fig. 1, fig. 2b is a schematic perspective view showing a second inner hub of the dual clutch of fig. 1, fig. 2c is a schematic perspective view showing a limiter of the dual clutch of fig. 1, and fig. 2d is a schematic perspective view showing a stator of the dual clutch of fig. 1.
Description of the reference numerals
1 First clutch assembly 11 first inner hub 111 first inner sleeve 111c first recess 112 first outer sleeve 113 first connection 12 first outer hub 13 first clutch unit
2 Second clutch assembly 21 second inner hub 211 second inner sleeve 211c second recess 212 second outer sleeve 213 second connecting portion 22 second outer hub 23 second clutch unit
3 Centering slave cylinder 31 housing 31s oil guiding surface 32 piston 33 bearing 34 preloaded spring
4 The protruding part of the oil hole 42 of the body part 41h of the limiting part 41
5 The main body 52 of the fixing member 51 fixes the holding portion of the post 53.
Aaxial R radial.
Detailed Description
Exemplary embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that these specific illustrations are for the purpose of illustrating how one skilled in the art may practice the invention, and are not intended to be exhaustive of all of the possible ways of practicing the invention, nor to limit the scope of the invention.
In the present invention, unless otherwise indicated, "axial", "radial" and "circumferential" refer to the axial direction, radial direction and circumferential direction, respectively, of the double clutch according to the present invention, and "axial one side" refers to the left side in fig. 1 and "axial other side" refers to the right side in fig. 1. In addition, "preassembled" or "preassembled state" refers to a state in which the components of the double clutch according to the invention have been assembled with one another, and can be integrally assembled to the shaft of the transmission.
(Structure of double clutch according to an embodiment of the present invention)
As shown in fig. 1, the double clutch according to the present invention includes two clutch assemblies (a first clutch assembly 1 and a second clutch assembly 2), a centering slave cylinder 3, a limiter 4, and a plurality of fixtures 5.
Specifically, in the present embodiment, the first clutch assembly 1 is located on one axial side (left side in fig. 1) of the centering slave cylinder 3, and includes a first inner hub 11, a first outer hub 12, and a first clutch unit 13 located between the first inner hub 11 and the first outer hub 12, which are assembled together.
As shown in fig. 2a, the first inner hub 11 includes a first inner sleeve 111, a first outer sleeve 112, and a first connection portion 113 between the first inner sleeve 111 and the first outer sleeve 112, which are integrally formed. The first inner sleeve 111 and the second outer sleeve 212 are each formed in a cylindrical shape and the first outer sleeve 112 is located radially outside the first inner sleeve 111. The first connecting portion 113 is formed in a circular ring shape and serves to connect the first inner sleeve 111 and the first outer sleeve 112. The inner peripheral portion of the first inner sleeve 111 is formed with a spline for rotationally coupling with, for example, a shaft of a transmission. Further, in order to connect the first inner hub 11 and the stopper 4 together in a relatively fixed manner in the circumferential direction and the radial direction R, the axial end face of the side of the first inner hub 11 facing the stopper 4 is formed with two first recessed portions 111c recessed, each of the first recessed portions 111c also expanding toward the radially outer side to the outer peripheral surface of the first inner hub 11, respectively, such that the first recessed portions 111c are open at the outer peripheral surface of the first inner hub 11. The two first concave portions 111c are arranged at the first inner hub 11 at a center angle of 180 degrees from each other.
The first outer hub 12 semi-surrounds the first inner hub 11 from the radially outer side and the axially side. The outer peripheral portion of the first outer hub 12 may be formed with a plurality of lubrication oil holes for the entry/exit of lubrication oil into/from the first clutch unit 13 of the first clutch assembly 1, the plurality of lubrication oil holes being aligned along the circumferential direction of the double clutch. In the present embodiment, a part of the lubrication oil hole is used as a hole that mates with the fixing post of the fixing piece 5.
The first clutch unit 13 includes friction disks and pressure plates that are provided to portions of the first inner hub 11 and the first outer hub 12 that face each other, respectively, and are alternately arranged in the axial direction a. The first clutch unit 13 is engaged when the friction plate and the pressure plate are engaged under the force applied to the centering slave cylinder 3, and the first clutch unit 13 is disengaged when the friction plate and the pressure plate are disengaged after the force applied to the centering slave cylinder 3 is removed.
In the present embodiment, the second clutch assembly 2 is located on the other axial side (right side in fig. 1) of the centering slave cylinder 3. Similar to the structure of the first clutch assembly 1, the second clutch assembly 2 includes a second inner hub 21, a second outer hub 22, and a second clutch unit 23 between the second inner hub 21 and the second outer hub 22, which are assembled together.
As shown in fig. 2b, similar to the structure of the first inner hub 11, the second inner hub 21 includes a second inner sleeve 211, a second outer sleeve 212, and a second connecting portion 213 between the second inner sleeve 211 and the second outer sleeve 212, which are integrally formed. The second inner sleeve 211 and the second outer sleeve 212 are each formed in a cylindrical shape and the second outer sleeve 212 is located radially outside the second inner sleeve 211. The second connecting portion 213 is formed in a circular ring shape and serves to connect the second inner sleeve 211 and the second outer sleeve 212. The inner peripheral portion of the second inner sleeve 211 is formed with a spline for rotationally coupling with, for example, a shaft of the transmission. Further, in order to connect the second inner hub 21 and the stopper 4 together in a relatively fixed manner in the circumferential direction and the radial direction R, the second inner hub 21 is formed with two second concave portions 211c concave at one axial-direction-side end face thereof facing the stopper 4, each second concave portion 211c also expanding to the outer peripheral face of the second inner hub 21 toward the radially outer side, respectively, such that the second concave portions 211c are open at the outer peripheral face of the second inner hub 21. The two second concave portions 211c are arranged at the second inner hub 21 at a center angle of 180 degrees from each other.
The second outer hub 22 partly surrounds the second inner hub 21 from the radially outer side and the axially other side. The outer peripheral portion of the second outer hub 22 may be formed with a plurality of oil holes for the entry/exit of lubricating oil into/from the clutch unit of the clutch assembly, the plurality of oil holes being aligned along the circumferential direction of the double clutch. In the present embodiment, a part of the lubrication oil hole is used as a hole that mates with the fixing post of the fixing piece 5.
The second clutch unit 23 includes friction disks and pressure plates that are provided at portions of the second inner hub 21 and the second outer hub 22 that are opposite to each other, respectively, and are alternately arranged in the axial direction a. The second clutch unit 23 is engaged when the friction plate and the pressure plate are engaged under the force applied to the centering slave cylinder 3, and the second clutch unit 23 is disengaged when the friction plate and the pressure plate are disengaged after the force applied to the centering slave cylinder 3 is removed.
In the present embodiment, in the double clutch in the preassembled state, the slave cylinder 3 is located between the two clutch assemblies 1,2 in the axial direction a. The centering slave cylinder 3 includes a housing 31, a piston 32 mounted in a mounting recess formed in the housing 31, a bearing 33, and a preload spring 34. In this way, the preload spring 34 applies a spring force via the piston 32 and the bearing 33 to the two clutch assemblies 1,2 located on both sides.
In the present embodiment, as shown in fig. 2c, the stopper 4 includes a body portion 41 and four protruding portions 42 formed as one body. The body portion 41 is formed in a cylindrical shape, and a central through hole of the body portion 41 is for passing a shaft of the transmission therethrough. The outer peripheral surface of each protruding portion 42 is flush with the outer peripheral surface of the body portion 41, two protruding portions 42 are provided on one axial side end surface of the body portion 41 opposite to the first inner hub 11 and protrude toward the axial direction, and the other two protruding portions 42 are provided on the other axial side end surface of the body portion 41 opposite to the second inner hub 21 and protrude toward the axial direction. On the axial one-side end surface of the body portion 41, two protruding portions 42 are arranged at 180-degree central angles, and the position and shape of each protruding portion 42 are matched with those of the first recessed portion 111c of the first inner hub 11, so that the two protruding portions 42 can be matingly engaged with the first recessed portion 111c of the first inner hub 11, thereby relatively fixing the first inner hub 11 with respect to the stopper 4 in the circumferential direction and the radial direction R in a coaxial manner, and on the axial other-side end surface of the body portion 41, two protruding portions 42 are arranged at 180-degree central angles, and the position and shape of each protruding portion 42 are matched with those of the second recessed portion 211c of the second inner hub 21, so that the two protruding portions 42 can be matingly engaged with the second recessed portion 211c of the second inner hub 21, thereby relatively fixing the second inner hub 21 with respect to the stopper 4 in the circumferential direction and the radial direction R in a coaxial manner. By the relative fixation of the limiter 4 with the first and second inner hubs 11, 21 as described above, it is also possible to achieve the spline alignment of the first and second inner hubs 11, 21, thereby facilitating the mounting of the splines of the first and second inner hubs 11, 21 to the portions of the shaft of the transmission where the corresponding splines are formed.
Further, the central portion of the body portion 41 in the axial direction a is formed with two oil holes 41h penetrating in the radial direction R so that lubricating oil from the shaft of the transmission can pass through the two oil holes 41h. Further, these lubricating oil passing through the oil hole 41h reaches the oil guiding surface 31s of the housing 31 of the center slave cylinder 3 by centrifugal force, and the oil guiding surface 31s extends obliquely outward in the radial direction while extending from the portion of the housing 31 of the center slave cylinder 3 opposite to the oil hole 41h toward both sides in the axial direction, so that the lubricating oil can be guided to the first clutch unit 13 and the second clutch unit 23, respectively, via the guiding of the oil guiding surface 31 s.
In the present embodiment, the plurality of fixtures 5 are uniformly distributed in the circumferential direction. As shown in fig. 2d, each of the fixing members 5 includes a main body portion 51 and a plurality of fixing posts 52. The main body portion 51 is also formed with a holding portion 53 in the form of a hole so as to hold the fixing member 5 when the fixing member 5 is attached and detached. The two rows of fixing posts 52 are fixed to the body portion 51 and inserted into holes of the outer hubs 12, 22 of the two clutch assemblies 1,2, respectively, and the body portion 51 of each fixing piece 5 is closely attached to the outer contour of the corresponding portion of the double clutch, so that the plurality of fixing pieces 5 are detachably mounted to the two clutch assemblies 1,2 of the double clutch, thereby enabling the two clutch assemblies 1,2 of the double clutch and the centering slave cylinder 3 located between the two clutch assemblies 1,2 to be relatively fixed in the axial direction a and the circumferential direction of the double clutch. The fixing element 5, when the outer hubs 12, 22 of the two clutch assemblies 1,2 are axially fixed relative to each other, can enable the two clutch assemblies 1,2 to respectively apply corresponding axial preloading forces to the preloading springs 34 in the centering slave cylinder 3, so that the two clutch assemblies 1,2 and the centering slave cylinder 3 can be mounted together in a manner of preloading a certain axial force, thereby enabling the axial dimension of the preloaded double clutch to be fixed, and facilitating the mounting and calibration and matching of the preloaded double clutch in a gearbox. The securing element 5 cooperates with the limiting element 4 to positively retain the double clutch in the preassembled state.
(Method of preassembling a double clutch according to an embodiment of the present invention and method of assembling a transmission according to the present invention including the double clutch)
The invention also provides a preassembling method of the double clutch and an assembling method of a transmission comprising the double clutch according to an embodiment of the invention, wherein the preassembling method comprises the following steps.
The centering slave cylinder 3 and the double clutch limiter 4 are mounted between the two clutch assemblies 1, 2 and the projections 42 of the double clutch limiter 4 are engaged with the recesses 111c, 211c of the inner hubs 11, 12 of the two clutch assemblies 1, 2 so that the double clutch limiter 4, the centering slave cylinder 3 and the inner hubs 11, 12 form a preassembled double clutch assembly in which the double clutch limiter 4 is relatively fixed to the inner hubs 11, 21 of the two clutch assemblies 1, 2 and the splines of the inner hubs 11, 21 of the two clutch assemblies 1, 2 are aligned in a coaxial manner. Further, a plurality of fixtures 5 are mounted to the outer hubs 12, 22 of the two clutch assemblies 1, 2 such that the outer hubs 12, 22 of the two clutch assemblies 1, 2 are relatively fixed in position in the axial direction a and the circumferential direction, thereby positively maintaining the entire double clutch in a pre-assembled state.
After obtaining the double clutch in the preassembled state based on the above-described method of preassembling a double clutch, the method of assembling a transmission according to the invention comprising the double clutch further comprises the step of mounting the transmission mechanism comprising the double clutch in the preassembled state on the shaft of the transmission such that the inner hubs 11, 21 of the two clutch assemblies 1, 2 and the limiter 4 are nested on the shaft of the transmission. At this time, the splines of the inner hubs 11, 21 are engaged with the corresponding splines of the shaft of the transmission, so that the inner hubs 11, 21 are coupled with the shaft of the transmission in a rotationally fixed manner.
Thus, with the above-described assembly method, the difficulty in assembling the double clutch to the shaft of the transmission caused by the problems described in the background art can be avoided, and the assembly is made convenient and easy.
It should be understood that the above-described embodiments are merely exemplary and are not intended to limit the present invention. Those skilled in the art can make various modifications and changes to the above-described embodiments without departing from the scope of the present invention. The following supplementary explanation is made.
(I) Although in the above embodiment, the stopper 4 is described as forming the protruding portion 42 (the first engaging portion as the stopper) and the two inner hubs 11, 21 are formed as the recessed portions 111c, 211c (the second engaging portion as the inner hubs), the present invention is not limited thereto. For example, it is also possible to employ an alternative in which the stopper 4 is formed as a concave portion of the first engagement portion and the two inner hubs 11, 21 are formed as convex portions of the second engagement portion.
In addition, examples of the above-described convex portion 42 include, but are not limited to, a column, a hook, a block, a bar, etc., and the above-described concave portions 111c, 211c may be formed in any desired shape.
Further, the number of the convex portions 42 and the concave portions 111c, 211c is not limited to the number described in the above-described embodiment, but any number of the convex portions 42 and the concave portions 111c, 211c may be provided as needed.
Preferably, on either side of the axial direction of the body portion 41, the protruding portions 42 or the recessed portions 111c, 211c are uniformly distributed along the circumferential direction of the body portion 41.
It should be understood that the concave portions 111c, 211c in the present application are not limited to be opened at the outer peripheral surfaces of the inner sleeves 111, 211, but may be opened at the inner peripheral surfaces of the inner sleeves 111, 211, and the convex portions 42 may be formed at the inner peripheral portions of the body portion 41.
The recessed portions 111c and 211c may be formed as recessed portions (i.e., blind holes) recessed inward from the axial end surfaces of the inner sleeves 111 and 211, and in this case, the recessed portions 111c and 211c are not opened on the outer peripheral surfaces and the inner peripheral surfaces of the inner sleeves 111 and 211. The protruding portion 42 may be formed at a radially central position of the body portion 41.
(Ii) Although not explicitly described in the above embodiments, it will be appreciated that after the pre-assembled double clutch is successfully mounted on the shaft of the transmission, the retainer 4 is fitted over the shaft to axially retain the inner hubs 11, 21 of the two clutch assemblies 1,2, but the securing member 5 may be removed at the final stage of the assembly method of the transmission so that the removed securing member 5 may be reused for a double clutch of the same type.
Claims (15)
1. A limiter for a double clutch, the limiter (4) comprising:
A body part (41), the body part (41) being formed in a cylindrical shape, and
-A plurality of first engagement portions provided to portions of the body portion (41) for being opposed to inner hubs (11, 21) of two clutch assemblies (1, 2) of the double clutch and being matingly engageable with second engagement portions of the inner hubs (11, 21) such that the inner hubs of the two clutch assemblies (1, 2) are relatively fixed with the limiter (4) in a coaxial manner at least in circumferential and radial directions (R) of the double clutch.
2. A limiter for double clutch according to claim 1, wherein the first engagement portions are provided extending axially and uniformly distributed along the circumferential direction of the body portion (41) on either side of the axial direction of the body portion (41).
3. The dual clutch limiter according to claim 1 or 2, wherein,
The first engagement portion is a protruding portion (42) protruding from an axial end surface of the body portion (41), at least two protruding portions (42) are provided on either side of the body portion (41) in the axial direction, and/or
The first joint portion is a recessed portion recessed from an axial end surface of the body portion (41), and at least two recessed portions are provided on either side of the body portion (41) in the axial direction.
4. A limiter (4) for a double clutch according to claim 3, wherein the outer peripheral surface of each of the protruding portions (42) or the recessed portions is flush with the outer peripheral surface of the body portion (41) and/or the inner peripheral surface of each of the protruding portions (42) or the recessed portions is flush with the inner peripheral surface of the body portion (41).
5. The double clutch spacer according to claim 1 or 2, wherein the body portion (41) is formed with a plurality of oil holes (41 h) penetrating in the radial direction (R).
6. A dual clutch, comprising:
Two clutch assemblies (1, 2), each clutch assembly (1, 2) comprising an inner hub (11, 21), an outer hub (12, 22), respectively, a clutch unit (13, 23) located between the inner hub (11, 21) and the outer hub (12, 22);
a centering slave cylinder (3), the centering slave cylinder (3) being mounted between the two clutch assemblies (1, 2) in the axial direction (A) of the double clutch and being used for controlling the engagement or disengagement of the clutch units (13, 23), and
The limiter (4) for a double clutch according to any one of claims 1 to 5, wherein the limiter (4) is interposed between the inner hubs (11, 21) of the two clutch assemblies (1, 2) in the axial direction (a) and is detachably mountable to the inner hubs (11, 21), so that the inner hubs (11, 21) of the two clutch assemblies (1, 2) and the limiter (4) can be relatively fixed at least in the circumferential direction and the radial direction (R) of the double clutch.
7. A double clutch according to claim 6, characterized in that the axial end face of the inner hub (11, 21) opposite the stop (4) is formed with a second engagement portion matching the first engagement portion of the stop (4), which second engagement portion is formed as a recess (111 c, 211 c) recessed from the axial end face or as a projection projecting from the axial end face.
8. A dual clutch according to claim 6 or 7, characterized in that the inner hub (11, 21) comprises an inner sleeve (111, 211), an outer sleeve (112, 212) located radially outwards of the inner sleeve (111, 211), and a connection (113, 213) for connecting the inner sleeve (111, 211) and the outer sleeve (112, 212), the inner sleeve (111, 211) being formed with splines for rotationally fixed engagement with a shaft of a transmission, the second engagement being formed in the inner sleeve (111, 211).
9. A double clutch according to claim 6 or 7, characterized in that the slave cylinder (3) is located radially outside the limiter (4) and that the slave cylinder (3) is formed with an oil guiding surface (31 s) opposite the oil hole (4 h) of the limiter (4).
10. A method of preassembling a dual clutch as claimed in any one of claims 6 to 9, the method comprising:
The centering slave cylinder (3) and the double clutch limiter (4) are mounted between the two clutch assemblies (1, 2), and the first joint of the double clutch limiter (4) and the second joint of the inner hubs (11, 21) of the two clutch assemblies (1, 2) are joined together, the double clutch limiter (4), the centering slave cylinder (3) and the two clutch assemblies (1, 2) form a preassembled double clutch in a coaxial manner, in which the double clutch limiter (4) and the inner hubs (11, 21) of the two clutch assemblies (1, 2) are relatively fixed and the splines of the inner hubs (11, 21) of the two clutch assemblies (1, 2) are aligned.
11. The method of preassembly of claim 10, the method is characterized in that the method also comprises the following steps:
A plurality of fasteners (5) are mounted to the outer hubs (12, 22) of the two clutch assemblies (1, 2) such that the outer hubs (12, 22) of the two clutch assemblies (1, 2) are relatively fixed in position at least in the axial and circumferential directions.
12. The preassembly method according to claim 11, characterized in that the fixing element (5) comprises a body part (51) and a plurality of fixing studs (52) protruding from the body part (51), the fixing studs (52) of the same fixing element (5) protruding into the bores of the outer hubs (12, 22) of the two clutch assemblies (1, 2), respectively.
13. A method of assembling a transmission comprising the dual clutch of any one of claims 6 to 9, the method comprising:
Mounting the centering slave cylinder (3) and the double clutch limiter (4) between the two clutch assemblies (1, 2) and engaging a first engagement portion of the double clutch limiter (4) with a second engagement portion of the inner hubs (11, 21) of the two clutch assemblies (1, 2), the double clutch limiter (4), the centering slave cylinder (3) and the two clutch assemblies (1, 2) forming a pre-assembled double clutch in which the double clutch limiter (4) is relatively fixed to the inner hubs (11, 21) of the two clutch assemblies (1, 2) and the splines of the inner hubs (11, 21) of the two clutch assemblies (1, 2) are aligned, and
A transmission comprising a pre-assembled double clutch is mounted to a shaft of a transmission such that inner hubs (11, 21) of the two clutch assemblies (1, 2) and the limiter (4) are nested on the shaft.
14. The method of assembling according to claim 13, wherein the pre-assembled double clutch is a double clutch pre-assembled using the pre-assembly method of claim 11 or 12.
15. The method of assembling of claim 14, wherein the method of assembling further comprises:
After mounting the pre-assembled double clutch to the transmission shaft, the fixture (5) is detached from the outer hubs (12, 22) of the two clutch assemblies (1, 2).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2020/123623 WO2022087777A1 (en) | 2020-10-26 | 2020-10-26 | Position-limiting member for dual clutch, dual clutch, method for pre-assembly thereof, and transmission assembly method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116171355A CN116171355A (en) | 2023-05-26 |
| CN116171355B true CN116171355B (en) | 2025-02-18 |
Family
ID=81381568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080105016.2A Active CN116171355B (en) | 2020-10-26 | 2020-10-26 | Limiting member for dual clutch, dual clutch and pre-assembly method thereof, and assembly method of transmission |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN116171355B (en) |
| DE (1) | DE112020007734T5 (en) |
| WO (1) | WO2022087777A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102822551A (en) * | 2010-04-08 | 2012-12-12 | 舍弗勒技术股份两合公司 | Double clutch |
| CN103842677A (en) * | 2011-08-18 | 2014-06-04 | 平和法雷奥有限公司 | Dry double clutch |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1731786A3 (en) * | 2005-06-09 | 2007-05-02 | LuK Lamellen und Kupplungsbau Beteiligungs KG | Clutch disc |
| DE502007005182D1 (en) * | 2007-01-26 | 2010-11-11 | Hoerbiger & Co | Double clutch of a dual-clutch transmission |
| DE102009039223B8 (en) * | 2009-08-28 | 2013-05-08 | Getrag Ford Transmissions Gmbh | Dual clutch arrangement for a transmission with two input shafts |
| JP2015532231A (en) * | 2012-09-25 | 2015-11-09 | ヴァレオ エキプマン エレクトリク モトゥール | Pre-assembled module for hybrid vehicle transmission assembly and method for mounting transmission assembly |
| FR3067076B1 (en) * | 2017-05-31 | 2019-12-06 | Valeo Embrayages | CLUTCH MECHANISM COMPRISING TWO SEPARATE ASSEMBLIES BY A DEVICE FOR ADJUSTING AN AXIAL DISTANCE |
| KR102487174B1 (en) * | 2017-12-11 | 2023-01-10 | 현대자동차 주식회사 | Double clutch system |
| KR102094607B1 (en) * | 2018-07-27 | 2020-03-27 | 주식회사평화발레오 | Double clutch assembly |
| RU2714622C1 (en) * | 2019-06-20 | 2020-02-18 | Федеральное государственное унитарное предприятие "Центральный ордена Трудового Красного Знамени научно-исследовательский автомобильный и автомоторный институт "НАМИ" (ФГУП "НАМИ") | Dual clutch assembly of transmission |
| CN211398348U (en) * | 2019-11-20 | 2020-09-01 | 珠海华粤传动科技有限公司 | Dry-type double clutch and inserted dish hub thereof |
| CN111649078B (en) * | 2020-07-07 | 2025-02-11 | 珠海华粤传动科技有限公司 | A two-speed dry dual clutch for pure electric vehicles |
-
2020
- 2020-10-26 WO PCT/CN2020/123623 patent/WO2022087777A1/en not_active Ceased
- 2020-10-26 CN CN202080105016.2A patent/CN116171355B/en active Active
- 2020-10-26 DE DE112020007734.9T patent/DE112020007734T5/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102822551A (en) * | 2010-04-08 | 2012-12-12 | 舍弗勒技术股份两合公司 | Double clutch |
| CN103842677A (en) * | 2011-08-18 | 2014-06-04 | 平和法雷奥有限公司 | Dry double clutch |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112020007734T5 (en) | 2023-08-17 |
| WO2022087777A1 (en) | 2022-05-05 |
| CN116171355A (en) | 2023-05-26 |
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