CN110657195B - Torsional vibration damper - Google Patents
Torsional vibration damper Download PDFInfo
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- CN110657195B CN110657195B CN201810701472.8A CN201810701472A CN110657195B CN 110657195 B CN110657195 B CN 110657195B CN 201810701472 A CN201810701472 A CN 201810701472A CN 110657195 B CN110657195 B CN 110657195B
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- torsional vibration
- vibration damper
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- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000013016 damping Methods 0.000 abstract description 6
- 238000011900 installation process Methods 0.000 abstract description 4
- 230000009977 dual effect Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/30—Flywheels
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- General Engineering & Computer Science (AREA)
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- Aviation & Aerospace Engineering (AREA)
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Abstract
The present invention provides a torsional vibration damper, comprising: a first rotating member; a second rotating member coupled with the first rotating member such that torque is transferred from the first rotating member to the second rotating member; and a hub co-rotating with the second rotating member, wherein the hub comprises an annular disc and a sub-hub of reduced radial dimension detachably connected to the annular disc. The torsional vibration damping system provided by the invention enables the crankshaft threads to be accessed in the installation process, and is simple in structure and convenient to install.
Description
Technical Field
The present invention relates to a torsional vibration damper, in particular for a motor vehicle drive train.
Background
In a transmission system of a motor vehicle, a torsional vibration damper is provided between a gear box or a clutch and an engine to isolate torsional vibration of a crankshaft of the engine, thereby reducing undesired noise, vibration, etc. caused by the vibration entering into the gear box, and further improving transmission performance of the motor vehicle.
A dual mass flywheel is an example of a torque damping system. In a dual mass flywheel, such as a dual clutch transmission system, the hub for transmitting torque to the output shaft is typically designed with an opening through which an operator can access a crankshaft bolt for securing the primary mass flywheel and the crankshaft from one side of the secondary mass flywheel to complete the dual mass flywheel installation. The diameter of the crank bolts relative to the axis of rotation is defined as the pitch center diameter (pitch center diameter, PCD). In some cases, PCD is small and the output shaft diameter is large (and thus the central bore diameter of the hub) and therefore, an opening cannot be provided in the hub through which the crankshaft bolt can be accessed.
Disclosure of Invention
In order to solve the problems existing in the prior art, the invention aims to provide a torsional vibration damper, which enables crankshaft threads to be accessed in the installation process, and has the advantages of simple structure and convenience in installation.
An aspect of the present invention provides a torsional vibration damper, including: a first rotating member; a second rotating member coupled with the first rotating member such that torque is transferred from the first rotating member to the second rotating member; and a hub co-rotating with the second rotating member, wherein the hub comprises an annular disc and a sub-hub of reduced radial dimension detachably connected to the annular disc.
Preferably, the annular disc is coupled to the sub-hub in a circumferential direction via a toothed connection.
Preferably, the torsional vibration damper further comprises a stop ring which is placed in the axial direction between a radially inwardly projecting stop of the annular disk or the second rotary member and the sub-hub, wherein the sub-hub is positioned in the axial direction by the stop ring on one side of the second rotary member.
Preferably, the torsional vibration damper further includes a driving disk that is disposed between the first rotary member and the second rotary member in a torque transmission path of the torsional vibration damper and is fixed to the second rotary member.
Preferably, the sub hub has a plurality of projections protruding radially outwardly, the annular disc has a plurality of recesses recessed radially outwardly, and the toothed fit is a fit between the projections and the recesses inserted into the projections.
Preferably, the torsional vibration damper further comprises a stop ring which is placed in the axial direction between a radially inwardly projecting annular disk stop of the annular disk and the sub-hub, wherein the sub-hub is positioned in the axial direction by the stop ring on one side of the second rotary member.
Further preferably, the sub-hub is positioned in the axial direction by the second rotating member on one side of the first rotating member.
Further preferably, the sub-hub is positioned in an axial direction by the drive disc on one side of the first rotary member.
Further preferably, the annular disk stopper protrudes radially inward at a portion between the recesses of the annular disk, near one side of the second rotating member. Preferably, the annular disc stop has a thickness less than the thickness of the body of the annular disc.
Preferably, the torsional vibration damper further comprises a stop ring placed in the axial direction between a radially inwardly protruding rotational member stop of the second rotational member and the sub-hub, wherein the sub-hub is positioned in the axial direction on one side of the second rotational member by the stop ring and in the axial direction on one side of the first rotational member by the annular disc.
Further preferably, the rotation member stopper protrudes radially inward at a portion of the second rotation member on one side of the second rotation member. Preferably, the thickness of the rotation member stopper is smaller than the thickness of the body of the second rotation member.
Further preferably, the sub hub is positioned in the axial direction on one side of the first rotating member by an annular disc stopper of the annular disc, which protrudes radially inward at a portion of the annular disc on one side close to the first rotating member. Preferably, the annular disc stop has a thickness less than the thickness of the body of the annular disc.
Preferably, the torsional vibration damper further includes a stopper ring including an annular body portion located at one side of the second rotary member with respect to the sub-hub and a plurality of hook portions hooking the annular disk at one side of the first rotary member, wherein the annular body portion is formed as one piece with the plurality of hook portions, and the sub-hub is positioned in an axial direction by the stopper ring at one side of the second rotary member.
Further preferably, the sub-hub is positioned in the axial direction by the drive disc on one side of the first rotary member.
Further preferably, the sub hub is positioned in the axial direction on one side of the first rotating member by an annular disk stopper of the annular disk, which protrudes radially inward at a portion near one side of the first rotating member. Preferably, the annular disc stop has a thickness less than the thickness of the body of the annular disc.
Further preferably, the plurality of hook portions extend radially outwardly from the annular body portion past radially outward sides of the plurality of projections, respectively, for hooking the annular disk.
Preferably, the annular disc is separate from both the second rotating member and the drive disc, and the annular disc is fixed to the second rotating member.
Preferably, the annular disc is formed in one piece with the second rotating member.
Preferably, the annular disc is formed in one piece with the drive disc.
Preferably, the torsional vibration damper is for a dual mass flywheel, the first rotating member being a primary mass flywheel and the second rotating member being a secondary mass flywheel.
Another aspect of the invention provides a drive train for a motor vehicle comprising a torsional vibration damper as described above.
A further aspect of the invention provides a motor vehicle comprising a drive train as described above.
The hub of the present invention comprises two separate parts, namely a sub-hub and an annular disc, the crankshaft bolts being accessible through openings left at the location where the sub-hub is to be mounted, before the sub-hub is not mounted in place, so that the torsional vibration damper is easy to install. In addition, the torsional vibration damper has at least one of the advantages of simple structure, convenient processing, low cost, high strength and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of a torsional vibration damper according to a first embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a perspective view of an annular disc in a torsional vibration damper in accordance with a first embodiment of the present invention;
FIG. 4 is a perspective view of a sub-hub in a torsional vibration damper in accordance with a first embodiment of the present invention;
FIG. 5 is a perspective view of a check ring in a torsional vibration damper according to a first embodiment of the present invention;
fig. 6a to 6e are views for explaining an installation process of a torsional vibration damper according to a first embodiment of the present invention;
FIG. 7 is a perspective view of a torsional vibration damper according to a second embodiment of the present invention;
FIG. 8 is a cross-sectional view of a torsional vibration damper according to a second embodiment of the present invention; a step of
FIG. 9 is a cross-sectional view taken along line A-A of FIG. 8;
FIG. 10 is a perspective view of a second rotary member in a torsional vibration damping damper in accordance with a second embodiment of the present invention;
FIG. 11 is a perspective view of a torsional vibration damper according to a third embodiment of the present invention;
FIG. 12 is a cross-sectional view of a torsional vibration damper according to a third embodiment of the present invention;
FIG. 13 is a cross-sectional view taken along line A-A in FIG. 12;
FIGS. 14a, 14b are perspective views of a second rotary member in a torsional vibration damper according to a third embodiment of the present invention;
FIG. 15 is a perspective view of an annular disc in a torsional vibration damper in accordance with a third embodiment of the present invention;
FIG. 16 is a perspective view of a sub-hub in a torsional vibration damper in accordance with a third embodiment of the present invention;
FIG. 17 is a cross-sectional view of a torsional vibration damper according to a fourth embodiment of the present invention;
FIG. 18 is a cross-sectional view taken along line A-A of FIG. 17;
FIG. 19a is an exemplary perspective view of a drive disk in a torsional vibration damper in accordance with a fourth embodiment of the present invention;
FIG. 19b is a perspective view of another example of a drive disk in a torsional vibration damper in accordance with a fourth embodiment of the present invention;
FIG. 20 is a perspective view of a torsional vibration damper according to a fifth embodiment of the present invention;
FIG. 21 is another perspective view of a torsional vibration damper according to a fifth embodiment of the present invention;
FIG. 22 is a cross-sectional view of a torsional vibration damper according to a fifth embodiment of the present invention;
FIG. 23 is a cross-sectional view taken along line A-A of FIG. 22;
FIG. 24 is a perspective view of a check ring in a torsional vibration damper according to a fifth embodiment of the present invention;
FIG. 25 is a perspective view of a torsional vibration damper according to a sixth embodiment of the present invention;
FIG. 26 is another perspective view of a torsional vibration damper according to a sixth embodiment of the present invention;
FIG. 27 is a cross-sectional view of a torsional vibration damper according to a sixth embodiment of the present invention;
FIG. 28 is a cross-sectional view taken along line A-A of FIG. 27;
fig. 29 is a perspective view of a driving disc in a torsional vibration damper according to a fifth embodiment of the present invention.
Detailed Description
Hereinafter, a torsional vibration damper according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention.
Thus, the following detailed description of the embodiments of the invention, as presented in conjunction with the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. In addition, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.
The terms and words used in the following description and claims are not limited to their bibliographic meanings, but are used by the inventors to convey a clear and consistent understanding of the invention. Accordingly, it should be understood by those skilled in the art that the following descriptions of the various embodiments of the present invention are provided for illustration only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.
It is to be understood that in the present specification and claims, the use of the terms "radial," "axial," "inward," "outward," and the like indicate an orientation or positional relationship merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements in question must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention. In general, "axial" refers to a direction parallel to the rotational axis of the torsional vibration damper, "radial" refers to a direction orthogonal to the rotational axis, "radially inward" refers to a direction orthogonal to the rotational axis and pointing toward the rotational axis, and "radially outward" refers to a direction orthogonal to the rotational axis and away from the rotational axis.
It should be understood that in the drawings, some components have been omitted for clarity so as not to obscure.
A torsional vibration damper 100 according to a first embodiment of the present invention is described in detail below with reference to fig. 1 to 6.
Referring to fig. 1, the torsional vibration damper 100 includes a first rotary member 110, a second rotary member 120, and a driving disk 130, the second rotary member 120 and the first rotary member 110 being coupled such that torque is transmitted from the first rotary member 110 to the second rotary member 120. Also, the first and second rotating members 110 and 120 may be relatively rotatable about a rotation axis. The first rotary member 110 is fixed to the crankshaft of the engine side by a plurality of crankshaft bolts 170. The first rotary member 110 receives torque from the crankshaft and transmits the torque to the drive plate 130 through, for example, a spring damping system, a friction damping system, or the like. The driving disk 130 is disposed between the first rotary member 110 and the second rotary member 120 on a torque transmission path of the torsional vibration damper. The drive disk 130 then transmits torque to the second rotating member 120.
In a conventional torsional vibration damper, an integrally formed hub is secured to the second rotating member 120 and/or the drive plate 130 by a set rivet 160 (or other type of fastener such as a set bolt) and outputs torque to an output shaft.
In the case shown in fig. 1, the diameter PCD of the crank bolt 170 with respect to the rotation axis is small, while the diameter D of the output shaft is large. Therefore, it is difficult to provide an opening in the hub to allow access to the crankshaft bolt 170 via the opening. Therefore, the first rotary member 110 cannot be fixed to the crankshaft, and thus the installation of the torsional vibration damper 100 cannot be completed.
As shown in fig. 1, in a torsional vibration damper 100 according to an embodiment of the present invention, a hub includes an annular disc 140 and a sub-hub 150 having a reduced radial dimension that is detachable with respect to the annular disc 140. Fig. 2 is a view of a section taken along line A-A of fig. 1. As shown in fig. 2 to 4, the sub-hub 150 has a plurality of protrusions 151 protruding radially outward, the annular disk 140 has a plurality of recesses 141 recessed radially outward, and the plurality of protrusions 151 are respectively inserted into the plurality of recesses 141 to couple the sub-hub 150 and the annular disk 140 in the circumferential direction so that torque can be transmitted between the annular disk 140 and the sub-hub 150. From another perspective, it can also be said that the sub-hub 150 has a plurality of recesses recessed radially outward, the annular disk 140 has a plurality of projections protruding radially outward, and the plurality of projections are engaged with the plurality of recesses. In addition, the annular disk 140 is fixed to the second rotary member 120 and the driving disk 130 by a fixing rivet 160. Thus, annular disc 140 transfers torque received from drive disc 130 and/or second rotating member 120 to sub-hub 150, and thus to an output shaft, which may be coupled with sub-hub 150 via splines.
Because sub-hub 150 is a separate piece from annular disk 140, sub-hub 150 may be mounted in place after mounting crankshaft bolts 170. The diameter of sub-hub 150 is designed to be less than, equal to, or greater than PCD, so long as the opening left on one side of second rotating member 120 when sub-hub 150 is not installed allows access to crankshaft bolt 170. Sub-hub 150 preferably has a diameter greater than PCD.
In addition, there is play between sub-hub 150 and annular disc 140, and thus torsional vibration damper 100 may also include means for compensating for play, such as spring loaded means or the like.
As shown in fig. 3, the annular disc stopper 142 protrudes radially inward at a portion between the recesses 141 at a side close to the second rotation member 120 in the axial direction, and the thickness of the annular disc stopper 142 is smaller than the thickness of the main body of the annular disc 140. Accordingly, portions between the protrusions 151 of the sub-hub 150 are recessed inward such that the innermost profile of the annular disk 140 is greater than or equal to the outermost profile of the sub-hub 150, so that the sub-hub 150 can be placed in place from one side of the second rotary member 120 without being blocked by the annular disk 140 or the like.
As shown in fig. 5, the check ring 180 is generally annular in shape with an opening to facilitate installation of the check ring 180.
The installation process of the torsional vibration damper 100 according to the first embodiment of the present invention is described in detail below with reference to fig. 6a to 6 e.
As shown in fig. 6a, the primary mass flywheel 110 and the drive plate 130 are mounted and the primary cover is welded to the primary mass flywheel 110. As shown in fig. 6b, the secondary mass flywheel 120 is mounted onto the drive plate 130. As shown in fig. 6c, 6d, the annular disc 140 is installed and the staking of the annular disc 140, secondary mass flywheel 120 and drive disc 130 (via set rivets 160) is completed. The assembled assembly in the step shown in fig. 6d may be delivered to the user as an installation assembly. As shown in fig. 6e, the mounting assembly is fixed to the engine-side crankshaft by a crankshaft bolt 170, that is, the primary mass flywheel 110 is fixed to the crankshaft by a crankshaft rivet 170; sub-hub 150 is then placed in position such that its projection 151 is inserted into recess 141 of annular disc 140, wherein sub-hub 150 is stopped by second rotating member 120 on one side of first rotating member 110. Finally, as shown in FIG. 1, stop ring 180 is snapped between sub-hub 150 and annular disk stop 142 of annular disk 140 such that sub-hub 150 is positioned in an axial direction. It can be seen that crankshaft bolts 170 can be easily installed without blocking sub-hub 150 prior to placement of sub-hub 150. In addition, axial positioning of sub-hub 150 is achieved through stop ring 180, and the structure is simple and operation is convenient.
A torsional vibration damper 200 according to a second embodiment of the present invention is described in detail below with reference to fig. 7 to 10.
Referring to fig. 7 and 8, the torsional vibration damper 200 includes a first rotary member (not shown), a second rotary member 220, a driving disk 230, and a hub. In this embodiment, the hub includes a sub-hub 250 and an annular disk. Unlike the first embodiment, the annular disc is integrally formed, i.e., formed as one piece, with the second rotating member 220. Alternatively, the second rotating member 220 includes an annular disk portion 240. The second rotating member 220 and the driving disk 230 are fixed by a fixing rivet 260.
As shown in fig. 9, the sub hub 250 has a plurality of protrusions 251 protruding radially outward, and the annular disk portion 240 has a plurality of recesses 241 recessed radially outward, the plurality of protrusions 251 being inserted into the plurality of recesses 241 to couple the sub hub 250 and the annular disk portion 240 in the circumferential direction. Because the sub-hub 250 is separate from the annular disk portion 240, the sub-hub 250 may be mounted in place after the crankshaft bolts 170 are installed. Accordingly, the crank bolt 170 can be conveniently installed.
The sub-hub 250 is positioned in the axial direction. As shown in fig. 8, the sub-hub 250 is positioned by the stop ring 280 on one side of the second rotational member 220 and by the drive disk 230 on one side of the first rotational member. Specifically, the stop ring 280 is disposed axially between the radially inwardly projecting annular disk stop 242 of the annular disk portion 240 and the sub-hub 250, and at least a portion of the drive disk 230 extends radially inwardly beyond the sub-hub 250.
As shown in fig. 10, the annular disc stopper 242 protrudes radially inward between the recesses 241 at a portion near one side of the second rotating member 220 in the axial direction, and the thickness of the annular disc stopper 242 is smaller than that of the main body of the annular disc 240. Accordingly, as shown in fig. 9, the portions between the protrusions 251 of the sub-hub 250 are recessed inward such that the innermost profile of the annular disk portion 240 is greater than or equal to the outermost profile of the sub-hub 250, so that the sub-hub 250 can be put in place from one side of the second rotating member 220 without being blocked by the annular disk portion 240 or the like.
A torsional vibration damper 300 according to a third embodiment of the present invention is described in detail below with reference to fig. 11 to 16.
Referring to fig. 11 and 12, the torsional vibration damper 300 includes a first rotary member 310, a second rotary member 320, a driving disk 330, and a hub. The first rotary member 310 is fixed to the crankshaft of the engine side by a plurality of crankshaft bolts 370. In this embodiment, the hub includes a sub-hub 350 and an annular disk 340. In this embodiment, the sub-hub 350 is a separate piece from the annular disk 340. The annular disk 340, the second rotary member 320, and the driving disk 330 are fixed by the fixing rivet 360.
As shown in fig. 13, 15, 16, the sub-hub 350 has a plurality of projections 351, 351 'protruding radially outward, and the annular disk 340 has a plurality of recesses 341, 341' recessed radially outward, the plurality of projections 351, 351 'being inserted into the plurality of recesses 341, 341' to couple the sub-hub 350 and the annular disk 340 in the circumferential direction.
The sub-hub 350 is positioned in the axial direction. As shown in fig. 12, the sub-hub 350 is positioned by a stop ring 380 on one side of the second rotational member 320 and by an annular disk 340 on one side of the first rotational member 310. Specifically, the stopper ring 380 is placed between the radially inwardly protruding rotational member stopper 321 of the second rotational member 320 and the sub-hub 250 in the axial direction, and the sub-hub 350 is positioned in the axial direction by the radially inwardly protruding annular disk stopper 342 of the annular disk 340 on one side of the first rotational member.
Fig. 14a, 14b show a top perspective view and a bottom perspective view, respectively, of a second rotating member 320 according to a third embodiment of the present invention. The rotation member stopper 321 protrudes radially inward at a portion of the second rotation member 320 at a side near the second rotation member 320, and the thickness of the rotation member stopper 321 is smaller than the thickness of the body of the second rotation member 320. Further, the second rotating member 320 is designed such that its innermost profile is greater than or equal to the outermost profile of the sub-hub 350, so that the sub-hub 350 can be placed in place from one side of the second rotating member 320 without being blocked by the second rotating member 320 or the like.
As shown in fig. 15, 16, the annular disc stopper 342 protrudes radially inward at least one recess 341 'of the plurality of recesses 341, 341' at a portion of the annular disc 340 on a side close to the first rotation member in the axial direction, and the thickness of the annular disc stopper 342 is smaller than the thickness of the body of the annular disc. Accordingly, the protrusion 351 'of the sub-hub 350 corresponding to the recess 341' has a reduced thickness to reduce the thickness of the torsional vibration damper 300 in the axial direction. In other words, at least one recess 341' of the plurality of recesses 341, 341' of the annular disc 340 overlaps with the corresponding protrusion 351' of the sub hub 350 seen in the axial direction, such that the sub hub 350 is positioned by the annular disc 340 at one side of the first rotary member 310.
A torsional vibration damper 400 according to a fourth embodiment of the present invention is described in detail below with reference to fig. 17 to 19.
Referring to fig. 17, a torsional vibration damper 400 includes a first rotary member (not shown), a second rotary member 420, a driving disk 430, and a hub. In this embodiment, the hub includes a sub-hub 450 and an annular disk. In this embodiment, the annular disk is integrally formed with the drive disk 430. Alternatively, the drive disk 430 includes an annular disk portion 440. The second rotary member 420 and the driving disk 430 are fixed by a fixing rivet 460.
As shown in fig. 18, the sub-hub 450 has a plurality of protrusions 451 protruding radially outward, and the annular disk portion 440 has a plurality of recesses 441 recessed radially outward, and the plurality of protrusions 451 are inserted into the plurality of recesses 441 to couple the sub-hub 450 and the annular disk portion 440 in the circumferential direction.
The sub-hub 450 is positioned in the axial direction. As shown in fig. 17, the sub hub 450 is positioned by a stop ring 480 on one side of the second rotational member 420 and by an annular disc portion 440 on one side of the first rotational member. Specifically, the stopper ring 480 is placed between the radially inwardly protruding rotational member stopper 421 of the second rotational member 420 and the sub-hub 450 in the axial direction, and the sub-hub 450 is positioned in the axial direction by the radially inwardly protruding annular disc stopper 442 of the annular disc portion 440 on one side of the first rotational member.
Similar to the third embodiment, the rotation member stopper 421 protrudes radially inward at a portion of the second rotation member 420 near one side of the second rotation member, and the thickness of the rotation member stopper 421 is smaller than the thickness of the body of the second rotation member 420. Further, the second rotation member 420 is designed such that its innermost profile is greater than or equal to the outermost profile of the sub-hub 450, so that the sub-hub 450 can be placed in place from one side of the second rotation member 420 without being blocked by the second rotation member 420 or the like.
Fig. 19a, 19b show two examples of a drive disc 430, 430' according to a fourth embodiment of the invention, respectively. In both examples, the annular disc stops 442, 442' overlap at least a portion of the sub-hub 350 as seen in the axial direction such that the sub-hub 450 is positioned by the annular disc portion 440 on one side of the first rotational member 410. As shown in fig. 19a, in one example, an annular disc stopper 442 protrudes radially inward at a portion near one side of the first rotating member in the axial direction between two adjacent recesses 441, and the thickness of the annular disc stopper 442 is smaller than the thickness of the main body of the annular disc. As shown in fig. 19b, in another example, an annular disc stopper 442 'protrudes radially inward at a portion of one side of the first rotating member in the axial direction at least one recess 441' of the plurality of recesses 441, 441', and the thickness of the annular disc stopper 442' is smaller than the thickness of the main body of the annular disc portion 440.
A torsional vibration damper 500 according to a fifth embodiment of the present invention is described in detail below with reference to fig. 20 to 24.
Referring to fig. 20-22, a torsional vibration damper 500 includes a first rotary member (not shown), a second rotary member 520, a drive disk 530, and a hub. In this embodiment, the hub includes a sub-hub 550 and an annular disk. The annular disc is integrally formed with the second rotary member 520. Alternatively, the second rotary member 520 includes an annular disk portion 540. The second rotating member 520 and the driving disk 530 are fixed by a fixing rivet 560.
As shown in fig. 23, the sub hub 550 has a plurality of protrusions 551 protruding radially outward, and the annular disk portion 540 has a plurality of recesses 541 recessed radially outward, the plurality of protrusions 551 being inserted into the plurality of recesses 541 to couple the sub hub 550 and the annular disk portion 540 in the circumferential direction.
The sub-hub 550 is positioned in the axial direction. As shown in fig. 20-22, the sub-hub 550 is positioned by a stop ring 580 on one side of the second rotational member 520 and by a drive disk 530 on one side of the first rotational member. Specifically, at least a portion of drive disk 530 extends radially inward beyond sub-hub 550. And, in particular, as shown in fig. 22 to 24, the stopper 580 includes an annular body portion 581 located at one side of the second rotating member 520 of the sub hub 550 and a plurality of hook portions 582 hooked to the annular disc portion 540 at one side of the first rotating member, the annular body portion 581 being integrally formed with the plurality of hook portions 582, but is not limited thereto. The sub hub 550 is positioned in the axial direction by a stopper ring 580 at one side of the second rotating member 520. Due to such a configuration of the stopper ring 580, it is possible to avoid providing a stopper portion having a small thickness and thus low strength at the second rotating member, the annular disk, to enhance the strength of the second rotating member, the annular disk.
As shown in fig. 23, there is a gap in the radial direction between the protrusions 551 of the sub-hub 550 and the corresponding recesses 541 of the annular disc portion 540. The plurality of hook portions 580 extend radially outwardly from the annular body portion 581 past the radially outer sides of the plurality of protrusions 551, respectively, and hook the annular disc portion 540 on one side of the first rotational member through the gap. In other examples, the plurality of hook portions 580 may also extend to one side of the first rotational member at other locations to hook the annular disk portion 540.
A torsional vibration damper 600 according to a sixth embodiment of the present invention is described in detail below with reference to fig. 25 to 29.
Referring to fig. 25-27, a torsional vibration damper 600 includes a first rotary member (not shown), a second rotary member 620, a drive disk 630, and a hub. In this embodiment, the hub includes a sub-hub 650 and an annular disk. The annular disk is integrally formed with the drive disk 630. Alternatively, the drive disk 630 includes an annular disk portion 640. The second rotating member 620 and the driving disk 630 are fixed by the fixing rivet 660.
As shown in fig. 28, the sub hub 650 has a plurality of protrusions 651 protruding radially outward, and the annular disk portion 640 has a plurality of recesses 641 recessed radially outward, the plurality of protrusions 651 being inserted into the plurality of recesses 641 to couple the sub hub 650 and the annular disk portion 640 in the circumferential direction.
The sub hub 650 is positioned in the axial direction. As shown in fig. 25-27, the sub-hub 650 is positioned by a stop ring 680 on one side of the second rotational member 620 and by an annular disk portion 640 on one side of the first rotational member.
Specifically, similar to the fifth embodiment, the stopper 680 includes an annular body portion 681 on one side of the second rotating member 620 of the sub hub 650 and a plurality of hook portions 682 hooking the annular disk portion 640 on one side of the first rotating member, the annular body portion 681 being integrally formed with the plurality of hook portions 682. The sub hub 650 is positioned in the axial direction by a stopper ring 680 at one side of the second rotating member 620. More specifically, as shown in fig. 28, there is a gap in the radial direction between the protrusion 651 of the sub-hub 650 and the corresponding recess 541 of the annular disc portion 640. The plurality of hook portions 680 extend radially outward from the annular body portion 681 past the radially outer sides of the plurality of projections 651, respectively, and hook the annular disc portion 640 at one side of the first rotating member through the gap.
Specifically, the sub hub 650 is positioned by the radially inwardly protruding annular disc stop 642 of the annular disc portion 640 on one side of the first rotational member. As shown in fig. 29, the annular disc stopper 642 protrudes radially inward at a portion between the adjacent at least one pair of recesses 641 at a side closer to the first rotating member in the axial direction, and the thickness of the annular disc stopper 642 is smaller than the thickness of the main body of the annular disc portion 640.
It should be noted that the above described features, structures or characteristics may be combined in any suitable manner in embodiments other than those shown.
It should be noted that in the above-described embodiment, the first rotary member and the second rotary member are the primary mass flywheel and the secondary mass flywheel, respectively, of the dual mass flywheel. In other embodiments, the first and second rotating members may be included in other types of torsional vibration damping systems.
The scope of the invention is not to be limited by the embodiments described above, but by the appended claims and their equivalents.
List of reference numerals
First rotary member 110, 310
The second rotary member 120, 220, 320, 420, 520, 620
Drive discs 130, 230, 330, 430', 530, 630
Annular disk stops 142, 242, 342, 442', 642
Set rivets 160, 260, 360, 460, 560, 660
Crank bolt 170, 370
Check rings 180, 280, 380, 480, 580, 680
Claims (22)
1. A torsional vibration damper comprising:
a first rotating member;
a second rotating member coupled with the first rotating member such that torque is transferred from the first rotating member to the second rotating member; and
a hub co-rotating with the second rotating member, wherein
The hub comprises an annular disc and a sub-hub of reduced radial dimension detachably connected to the annular disc,
the diameter of the sub-hub is larger than a pitch center diameter, which is a diameter corresponding to a distance of a crankshaft bolt for mounting the torsional vibration damper with respect to a rotation axis of the torsional vibration damper.
2. The torsional vibration damper of claim 1, wherein,
the annular disk is coupled to the sub-hub in a circumferential direction via a toothed connection.
3. The torsional vibration damper of claim 2, further comprising
A stop ring placed in an axial direction between the radially inwardly protruding stop of the annular disc or the second rotating member and the sub-hub, wherein,
the sub-hub is positioned in the axial direction on one side of the second rotating member by the stop ring.
4. The torsional vibration damper of claim 2, further comprising
A drive plate disposed between the first rotary member and the second rotary member in a torque transmission path of the torsional vibration damper and fixed to the second rotary member.
5. The torsional vibration damper of claim 4, wherein,
the sub-hub has a plurality of projections projecting radially outwardly, the annular disc has a plurality of recesses recessed radially outwardly, and the toothed connection is a fit between the projections and the recesses inserted into the projections.
6. The torsional vibration damper of claim 5, further comprising
A stop ring disposed in an axial direction between a radially inwardly projecting annular disk stop of the annular disk and the sub-hub, wherein,
the sub-hub is positioned in the axial direction on one side of the second rotating member by the stop ring.
7. The torsional vibration damper of claim 6, wherein
The sub-hub is positioned in the axial direction by the second rotating member on one side of the first rotating member.
8. The torsional vibration damper of claim 6, wherein
The sub-hub is positioned in an axial direction by the drive disk on one side of the first rotating member.
9. The torsional vibration damper of claim 6, wherein
The annular disk stopper protrudes radially inward at a portion between the recesses of the annular disk, at a side close to the second rotating member.
10. The torsional vibration damper of claim 5, further comprising
A stop ring disposed in an axial direction between a radially inwardly protruding rotational member stop of the second rotational member and the sub-hub, wherein,
the sub-hub is positioned in the axial direction on one side of the second rotating member by the stop ring and in the axial direction on one side of the first rotating member by the annular disc.
11. The torsional vibration damper of claim 10, wherein
The rotation member stopper protrudes radially inward at a portion of the second rotation member on one side of the second rotation member.
12. The torsional vibration damper of claim 10, wherein
The sub hub is positioned in an axial direction on one side of the first rotating member by an annular disk stopper of the annular disk, which protrudes radially inward at a portion of the annular disk on one side close to the first rotating member.
13. The torsional vibration damper of claim 5, further comprising
A stop ring including an annular body portion located on one side of the second rotary member with respect to the sub-hub and a plurality of hook portions hooking the annular disk on one side of the first rotary member, wherein,
the annular body portion is formed as one piece with the plurality of hook-like portions, and
the sub-hub is positioned in the axial direction on one side of the second rotating member by the stop ring.
14. The torsional vibration damper of claim 13, wherein
The sub-hub is positioned in an axial direction by the drive disk on one side of the first rotating member.
15. The torsional vibration damper of claim 13, wherein
The sub hub is positioned in the axial direction on one side of the first rotating member by an annular disk stopper of the annular disk, which protrudes radially inward at a portion near one side of the first rotating member.
16. The torsional vibration damper of claim 13, wherein
The plurality of hook portions extend radially outwardly from the annular body portion past radially outward sides of the plurality of projections, respectively, for hooking the annular disk.
17. Torsional vibration damper according to one of the claims 4-16, wherein,
the annular disk is separate from both the second rotating member and the drive disk, and the annular disk is fixedly connected to the second rotating member.
18. Torsional vibration damper according to one of claims 4-6, 9, 13-16, wherein,
the annular disc is formed in one piece with the second rotating member.
19. The torsional vibration damper according to any of claims 4-7, 9-13, 15-16,
wherein,,
the annular disc is formed in one piece with the drive disc.
20. Torsional vibration damper according to one of claims 1-16, wherein,
the torsional vibration damper is used for a dual-mass flywheel, the first rotating member is a primary mass flywheel, and the second rotating member is a secondary mass flywheel.
21. A transmission system for a motor vehicle, comprising
A torsional vibration damper according to any of claims 1-20.
22. A motor vehicle includes
A transmission system according to claim 21.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810701472.8A CN110657195B (en) | 2018-06-29 | 2018-06-29 | Torsional vibration damper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810701472.8A CN110657195B (en) | 2018-06-29 | 2018-06-29 | Torsional vibration damper |
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| CN110657195B true CN110657195B (en) | 2023-06-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2013024923A1 (en) * | 2011-08-18 | 2013-02-21 | 주식회사평화발레오 | Dry double clutch |
| DE102016205424A1 (en) * | 2016-04-01 | 2017-10-05 | Schaeffler Technologies AG & Co. KG | torsional vibration dampers |
| CN206072233U (en) * | 2016-08-17 | 2017-04-05 | 南京法雷奥离合器有限公司 | A kind of double mass flywheel for being provided with spring damping piece |
| CN206958163U (en) * | 2017-05-26 | 2018-02-02 | 沈阳平和法雷奥汽车传动系统有限公司 | Self compensation double mass flywheel |
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