CN111911552A - Clutch device - Google Patents
Clutch device Download PDFInfo
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- CN111911552A CN111911552A CN202010911692.0A CN202010911692A CN111911552A CN 111911552 A CN111911552 A CN 111911552A CN 202010911692 A CN202010911692 A CN 202010911692A CN 111911552 A CN111911552 A CN 111911552A
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- Prior art keywords
- clutch
- central sleeve
- sleeve
- pressure plate
- positioning guide
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- 230000005540 biological transmission Effects 0.000 claims abstract description 37
- 238000003825 pressing Methods 0.000 claims description 53
- 230000000149 penetrating effect Effects 0.000 claims description 18
- 238000000034 method Methods 0.000 abstract description 27
- 230000002035 prolonged effect Effects 0.000 abstract description 10
- 238000002679 ablation Methods 0.000 abstract description 9
- 230000002441 reversible effect Effects 0.000 description 19
- 230000000694 effects Effects 0.000 description 18
- 238000013461 design Methods 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- F16D13/00—Friction clutches
- F16D13/22—Friction clutches with axially-movable clutching members
- F16D13/38—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
- F16D13/52—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/06—Combinations of engines with mechanical gearing
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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
- F16D13/00—Friction clutches
- F16D13/58—Details
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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
- F16D13/00—Friction clutches
- F16D13/58—Details
- F16D13/72—Features relating to cooling
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention discloses a clutch, which comprises a pressure plate, a friction plate assembly and a central sleeve, wherein the pressure plate is arranged on the center of the central sleeve; the pressure plate is provided with a positioning guide part which forms radial positioning axial guiding fit with the central sleeve near the external spline of the central sleeve, and the pressure plate and the central sleeve are also engaged through an inclined plane engaging pair; the invention improves the centering precision of the clutch, reduces the vibration generated when the clutch is combined and separated, and ensures the control stability of the clutch; meanwhile, the inclined plane meshing pair is utilized to enable the central sleeve and the pressure plate to form association, when set relative rotation occurs, the inclined plane meshing pair can increase the output torque of the clutch and increase the reserve coefficient of the clutch so as to increase the force transmission capacity, the sliding friction time of the clutch is reduced, and the fault ablation is avoided; the positioning guide mechanism can ensure that the inclined plane meshing pair is aligned, the meshing and compressing process is smooth, and the clutch can be prevented from vibrating, clamping stagnation and ablation in the engaging process, so that the service life of the clutch can be prolonged, and the overall performance of the clutch can be improved.
Description
Technical Field
The invention relates to an engine component or an accessory component, in particular to a clutch.
Background
The clutch is located between the engine and the gearbox, is a component in the transmission system directly connected with the engine, and is a transmission mechanism used for transmitting or cutting off power between the engine and the gearbox.
The clutch comprises a pressure plate, a center sleeve assembly with a driven friction plate, an elastic assembly, a lifting plate and an outer cover assembly with a driving friction plate; in the prior art, a common clutch is in a closed transmission state in a normal state, namely, the pressing plate and the center sleeve are tightly pressed, so that the driven friction plate on the center sleeve is tightly attached to the driving friction plate combined with the outer cover to form transmission, and when the clutch needs to be separated, the pressing plate and the center sleeve are driven to separate through the external force driving lifting plate compression elastic assembly, so that the driving friction plate and the driven friction plate are separated, and the clutch is separated or combined.
In the center of the prior art, relative axial movement is generated between a pressure plate and a clutch in the process of jointing and separating, and the axial movement is expected to have better stability, so a radial positioning axial guide structure is required between the pressure plate and a center sleeve, the basic structure of the existing clutch positioning guide is that a center hole of the pressure plate and a power transmission shaft neck (internal spline) boss of the center sleeve are positioned, the structure is limited by space, the positioning guide length is shorter, and the positioning guide part is short and is easy to twist in the process of separating and jointing, so that the shaking is easy to generate and unstable, and the use performance of the clutch is influenced.
Meanwhile, the volume of the clutch is limited due to the space limitation of the vehicle engine, so that the transmitted torque is limited, if larger torque needs to be transmitted, the installation space needs to be enlarged or the force value of the main spring of the clutch needs to be increased so as to increase the reserve coefficient of the clutch, so that the clutch control force value is larger and larger, particularly for a motorcycle, manual control is needed, larger control force is needed, and in order to ensure the smoothness and simplicity of the manual control, the clutch needs to have smaller reserve coefficient of the spring, and the contradiction exists between the two; meanwhile, the external spline of the central sleeve is passively stressed when the clutch transmits power, the requirement on the strength of the external spline of the central sleeve is higher when the transmission torque is larger, and the external spline of the central sleeve fails due to insufficient torque matching caused by long-time large-torque transmission; the clutch in the prior art has long sliding wear time during engagement, and ablation occurs between friction plates, but in practice, the ablation accounts for most of the clutch failures;
based on the problems, the invention provides a clutch, which firstly solves the stability problem, namely a stable radial positioning axial guide structure is arranged, so that the centering precision of the clutch is improved, the vibration generated when the clutch is combined and separated is reduced, the service life of the clutch is prolonged, and the overall performance of the clutch is improved; and the series problems of the reserve coefficient and the sliding abrasion are solved, and the running safety of the vehicle is ensured.
Disclosure of Invention
In view of the above, the present invention provides a clutch, which is provided with a stable radial positioning axial guiding structure, so as to improve the centering precision of the clutch, reduce the vibration generated during the engagement and disengagement of the clutch, prolong the service life of the clutch, and improve the overall performance of the clutch; and by combining a radial positioning axial guide structure, the series problems of reserve coefficient, transmission strength and sliding abrasion are solved.
The clutch comprises a pressure plate, a friction plate assembly and a central sleeve;
the pressure plate is provided with a positioning guide part which forms radial positioning axial guiding fit with the central sleeve near the external spline of the central sleeve;
the pressure plate and the central sleeve are matched through an inclined plane meshing pair, and when the pressure plate rotates relative to the central sleeve in the transmission direction during clutch connection transmission, the inclined plane meshing pair generates an axial component force for drawing the pressure plate and the central sleeve together;
the clutch also comprises an outer cover, a pressure plate, a central sleeve, a lifting plate, a main spring, a friction plate assembly (the driving friction plate is arranged on the outer cover, the driven friction plate is arranged on the central sleeve) and the like, wherein the pressure plate or the central sleeve is provided with a spring seat sinking groove for accommodating the main spring, the central sleeve or the pressure plate is correspondingly provided with a spring guide pillar, the spring guide pillar passes through a through hole arranged at the bottom of the spring seat sinking groove, the lifting plate is basically and fixedly arranged at the end part of the spring guide pillar through a bolt, one end of the main spring props against the lifting plate, the other end of the main spring props against the bottom of the spring seat sinking groove, so that pre-tightening force for pressing the pressure plate and the central sleeve is formed; when the clutch needs to be separated, the lifting plate is driven by external force to compress the spring and drive the spring guide post to drive the pressing plate or the central sleeve to move so as to separate and compress the pressing plate and the central sleeve, so that the clutch is separated and separated from transmission; the mechanical structure of the clutch also has other auxiliary components, which belong to the prior art and are not described herein;
the positioning guide part of the pressure plate forms radial positioning and axial guide when the pressure plate and the center sleeve axially move relatively, generally adopts an axial columnar structure, the center sleeve is provided with a corresponding matching part and can be a cylindrical structure matched with the columnar structure, the cylindrical structure can be the original design of the center sleeve or a new design and forms mutual sleeve joint with the columnar structure of the pressure plate, thereby forming positioning guide, the guide length can be designed according to the requirement of the positioning guide length, the sleeve joint part is radially positioned near an external spline of the center sleeve used for mounting a driven friction plate, and radially outwards forms guide, compared with the central guide of the prior art, the guide positioning structure is radially expanded outwards, the deflection torque generated during the relative movement is reduced, the positioning guide effect is good, and the stable and smooth joint and separation of the clutch can be kept, the eccentric wear of the parts is avoided;
the inclined plane meshing pair refers to two mutually meshed inclined planes (a spiral surface is formed in the axial direction), when relative rotation (small) occurs between the pressure plate and the central sleeve, the inclined plane meshing pair can generate axial component force, under the condition that the inclined direction (turning direction) of the inclined plane is set, the axial component force can tighten the pressure plate and the central sleeve, the inclined plane meshing pair can be meshed and tightened to increase the output torque of the clutch, the reserve coefficient of the clutch is increased, the force transfer capacity is increased, the sliding wear time of the clutch is shortened, and the fault ablation is avoided; the inclined plane meshing pair means that two opposite inclined planes of the pressure plate and the central sleeve along the axial direction are meshed, the inclined direction of the inclined planes is in the circumferential direction, and the axial component force can be related to the rotation, so that the details are not repeated;
according to the invention, the inclined plane meshing pair needs stable rotation and axial sliding action between the pressure plate and the central sleeve, and if the problem of deflection torque caused by poor stability of rotation or axial movement occurs, the normal meshing of the clutch is influenced, the inclined plane meshing pair is also unstable in matching, and the smooth connection of the final clutch is influenced; therefore, the inclined plane meshing pair is combined with the positioning guide structure, so that the clutch can be stably, smoothly and quickly jointed, and the problem of deflection torque generated during jointing of the conventional clutch is solved.
Furthermore, the positioning guide part is a positioning guide sleeve which extends along the axial direction, is fixed with the pressure plate into a whole and is coaxial with the pressure plate, the positioning guide sleeve is of an annular structure or is formed by arranging a plurality of axially extending bulges along the annular direction, and the outer circle of the positioning guide sleeve, which is sleeved on the corresponding position of the central sleeve and the external spline of the central sleeve, forms radial positioning axial guide fit; as shown in the figure, the positioning guide sleeve (which may be an integral annular structure or a plurality of raised structures arranged in an annular array form) and the pressure plate are integrally formed and extend axially towards the central sleeve, the positioning guide sleeve is directly sleeved on the spline tooth crest (which refers to the spline for mounting the driven friction plate) of the outer side of the central sleeve close to the pressure plate side (of course, the positioning guide sleeve may also be specially processed into a flat circular surface, which is not described herein), the positioning guide sleeve and the outer circle of the central sleeve (which is directly sleeved on the spline tooth crest for simple and low-cost manufacture) form a sleeving structure, so as to form a better guiding and positioning structure, the structure is simple to manufacture, the stable positioning and guiding of the integral clutch can be realized by directly processing the annular raised part on the pressure plate, and the integral volume and structure are not obviously changed for the clutch itself, the marketability is better; this structure is applicable to the center sleeve and is provided with the heavy groove of spring holder and the clamp plate is provided with the structure of spring guide pillar, and in this structure, the center sleeve does not generally have interior circle structure, directly forms the loop configuration of overcoat in the center sleeve excircle on the clamp plate, avoids complicated new design and course of working.
Furthermore, the positioning guide part is a positioning guide boss which is fixed with the pressure plate into a whole, extends along the axial direction and is coaxial with the pressure plate, the positioning guide boss is of a cylindrical structure or is formed by arranging a plurality of bosses extending along the axial direction along the circumferential direction, and the positioning guide boss is sleeved in an inner circle at the position of the center sleeve corresponding to the outer spline of the center sleeve and forms radial positioning axial guide fit with the inner circle; as shown in the figure, the positioning guide boss (generally adopting an integral cylindrical boss structure, or a plurality of boss structures arranged in an annular array manner) and the pressure plate are integrally formed and extend towards the direction of the central sleeve along the axial direction, the positioning guide boss is directly and internally sleeved on the inner circle (certainly, the positioning guide boss can also be specially processed into a smooth circular inner circle) of the outer spline (referring to the spline for mounting the driven friction plate) of the central sleeve close to the side of the pressure plate, a sleeving structure is formed between the positioning guide boss and the inner circle of the central sleeve, so that a better guiding and positioning structure is formed, the structure is simple to manufacture, the stable positioning and guiding of the integral clutch can be realized by directly processing the positioning guide boss on the pressure plate, and the integral volume and the structure are not obviously changed for the clutch per se, so that the structure has better commodity; this structure is applicable to the clamp plate and is provided with the structure that the spring holder sinks the groove and the center sleeve is provided with the spring guide pillar, and in this structure, the clamp plate does not generally have interior circle structure, directly forms the interior cover on the clamp plate in the cylindricality structure of center sleeve circle, avoids complicated new design and course of working.
Furthermore, a clearance which rotates relatively in the circumferential direction is formed between the pressure plate and the central sleeve, the clearance which rotates relatively in the circumferential direction between the pressure plate and the central sleeve can be designed on the matching relationship of the pressure plate and the central sleeve, the common design is that the pressure plate and the central sleeve rotate approximately synchronously, and a space which rotates in the circumferential direction needs to be reserved on the basis of the approximate synchronous rotation for the clearance which rotates relatively, and the clearance can be realized by the existing mechanical design means, and is not described again; here, the clearance means a space having a relative rotation rather than a large angle of rotation.
When the clutch is engaged for transmission, when the pressure plate has relative rotation in the transmission direction relative to the center sleeve, the inclined plane meshing pair generates axial component force for pulling the pressure plate and the central sleeve close, and due to the existence of the inclined plane meshing pair, under the condition of a set inclined direction, when the normal transmission clutch is engaged and slid, the pressure plate rotates relative to the central sleeve in the transmission direction (the pressure plate has a rotating clearance, and the size of the clearance can be designed according to requirements), under the condition of setting the inclined direction of the inclined plane according to the requirement, the inclined plane meshing pair can generate axial tension force between the pressure plate and the central sleeve, the main spring of the auxiliary clutch enables the clutch to be quickly jointed, the force path for operating and controlling the clutch is reduced, the reserve coefficient of the clutch is increased under the condition of not changing the elastic coefficient of the main spring, so that the comfort and the commodity are improved, and the reliability of the engine is improved; the combination speed is higher, the friction plate sliding process is shortened, the temperature rise of the friction plate is reduced, the heat dissipation effect is better, and the service life of the friction plate of the clutch can be prolonged, so that the service life of the clutch is prolonged; in addition, under the side effect of bevel engagement, a force except for a main spring is provided for pressing the friction plate, the combination force is increased, the combination efficiency is improved, the overall efficiency of the vehicle is improved, and the energy consumption is reduced; because the combination speed is higher, the vibrato of the driven friction plate is eliminated in the sliding and grinding process, the noise of the whole automobile is reduced, and the commodity is better; the technical effect brought by the inclined plane meshing pair is further ensured by combining the positioning guide structure.
Further, a special pressing plate external spline for mounting a special driven friction plate is formed on the pressing plate, and certainly, a special driving friction plate matched with the special driven friction plate is arranged on the outer cover, and the matching mode is similar to that of the driving friction plate and the driven friction plate on the clutch, and the details are not repeated; in the process of the clutch engaging, driving and sliding, because the central sleeve is loaded, the rotating process lags behind the pressure plate relative to the pressure plate, at the moment, the pressure plate rotates forwards relative to the central sleeve, and because of the effect of the meshing pair of the bevel gear on the end surface, axial tension is generated between the pressure plate and the central sleeve to accelerate the meshing of the clutch; the structure accelerates the engagement of the clutch by utilizing the friction transmission power of the clutch, and has simple structure and low manufacturing cost; meanwhile, after the clutch is engaged, the special friction plate participates in transmission, and the load of the friction plate assembly is reduced, so that the torque transmitted by the external spline of the central sleeve is reduced, and the reliability of the clutch is improved; as shown in the figure, the special driven friction plate is one, and the mode of the special driven friction plate arranged on the pressure plate is the same as the mode of the special driven friction plate arranged on the central sleeve, and the description is omitted; the special driven friction plate is matched, and two special driving friction plates which are respectively arranged at two sides of the special driven friction plate are arranged on the outer cover.
Furthermore, the pressing plate is provided with a special pressing plate external spline for mounting a special driven friction plate, the positioning guide sleeve is formed by arranging the spline teeth of the special pressing plate external spline along the circumferential direction, the spline is directly processed by utilizing the positioning guide sleeve and the special driven friction plate is mounted, the novel design is fully utilized in structure, the purposes of guiding positioning and mounting the special friction plate are achieved, the whole structure is simple and compact, and the cost is lower; the structure is suitable for the structure that the pressure plate is provided with the positioning guide sleeve;
or the positioning guide sleeve is of an integral annular structure, and the outer circle of the positioning guide sleeve is provided with the special pressing plate external spline for mounting the special driven friction plate, so that the purpose of the invention can be achieved, and the positioning guide sleeve has a better guiding and positioning effect.
Furthermore, an annular boss is formed on the outer circle of the positioning guide boss close to the root part, and the annular boss is used for mounting a special external spline for a pressing plate of the special driven friction plate; the outer circle of the positioning guide boss close to the root refers to the position where the positioning guide boss is connected with the plate surface of the pressure plate, the root of the positioning guide boss is provided with a special spline, and a set position is reserved between the end part of the outer spline of the center sleeve and the pressure plate, so that the detailed description is omitted; similarly, the positioning guide boss is utilized to directly process the spline and install the special driven friction plate, the new design is fully utilized in structure, the purposes of guiding positioning and special friction plate installation are achieved, the whole structure is simple and compact, and the cost is lower; the structure is suitable for the structure that the pressure plate is provided with the positioning guide boss.
Further, the center sleeve is provided with a power output shaft neck for transmitting power, the pressing plate is provided with a shaft hole seat for rotationally matching with the power output shaft neck, and the power output shaft neck is matched with the shaft hole to form a second positioning and guiding structure; the second positioning guide structure is combined with the positioning guide structure, and the positioning and guiding are realized together from the radial middle part and the larger radial dimension part, so that the axial sliding between the pressing plate and the central sleeve is smoother, and the guiding is more stable.
Furthermore, the center sleeve is provided with a spring seat sinking groove for accommodating a clutch spring, the pressure plate is provided with a spring guide post penetrating through the spring seat sinking groove, and a hole in the bottom of the spring seat sinking groove for penetrating through the spring guide post is a waist-shaped hole, so that a clearance capable of relatively rotating in the circumferential direction is formed between the pressure plate and the center sleeve; of course, the length direction of the waist-shaped hole is in the circumferential direction so as to reserve a clearance for relative rotation; as shown in the figure, the lifting plate is tightly supported and mounted at the end part of the spring guide post through a bolt to form a structure that the compression spring drives the pressing plate to axially move so as to separate the clutch, which is not described again;
or the pressing plate is provided with a spring seat sinking groove for accommodating a clutch spring, a spring guide post penetrating through the spring seat sinking groove is sleeved in the center, and a hole in the bottom of the spring seat sinking groove for penetrating through the spring guide post is a waist-shaped hole, so that a clearance capable of relatively rotating in the circumferential direction is formed between the pressing plate and the center sleeve; of course, the length direction of the waist-shaped hole is in the circumferential direction so as to reserve a clearance for relative rotation; as shown in the figure, the lifting plate is tightly supported and mounted at the end of the spring guide post through a bolt to form a structure that the compression spring drives the central sleeve to axially move so as to separate the clutch, which is not described herein again.
Furthermore, the inclined plane meshing pair is formed by engaging an inclined tooth surface arranged on a boss of the pressing plate with an inclined groove surface arranged on a hole groove of the central sleeve in a manner of avoiding the spring seat sinking groove;
the wall of one side (circumferential direction) of the hole groove is the inclined groove surface, after the lug boss is inserted into the hole groove, the inclined tooth surface is attached to the inclined groove surface to form an inclined surface pair meshing structure, the inclined tooth surface from the pressure plate to the central sleeve is inclined towards the transmission direction, and when the transmission is normal, the inclined tooth surface of the pressure plate cuts into the inclined groove surface of the hole groove to form an axially tensioned component force; the structure is suitable for a clutch structure in which a spring seat sinking groove for accommodating a clutch spring is sleeved at the center, and a spring guide pillar penetrating through the spring seat sinking groove is arranged on a pressure plate; the inclined tooth surface and the inclined groove surface can be planes, spiral surfaces, arc surfaces and the like, the total inclination is only required to achieve the effect of generating axial component force, the lift angle of the inclined tooth surface and the inclined groove surface is 20-70 degrees, preferably 55-60 degrees, and the lift angle is 55 degrees in the embodiment;
the matching structure of the oblique tooth surface and the oblique groove surface is adopted, the original parts and space of the clutch are fully utilized, and the whole volume and the external structure of the clutch do not need to be changed; in addition, the matching structure of the oblique tooth surface and the oblique groove surface also ensures the stability of the meshing process, and is beneficial to forming effective lubrication for a wet clutch;
or the inclined surface meshing pair is formed by meshing an inclined tooth surface arranged on a boss of the central sleeve and an inclined groove surface arranged on a hole groove of the pressure plate in a way of avoiding the spring seat sinking groove; the structure is basically consistent with the structure, only different setting modes are adopted due to different clutch structures, the structure is suitable for the clutch structure that the pressing plate is provided with a spring seat sunken groove for accommodating a clutch spring, and the center sleeve is provided with a spring guide pillar penetrating through the spring seat sunken groove, so that the description is omitted.
The invention has the beneficial effects that: according to the clutch, the radial positioning axial guide structure is arranged between the pressure plate and the center sleeve near the outer spline of the center sleeve, so that the centering precision of the clutch is improved, the vibration generated during the combination and separation of the clutch is reduced, and the control stability of the clutch is ensured; meanwhile, the inclined plane meshing pair is utilized to enable the central sleeve and the pressure plate to form association, when set relative rotation occurs, the inclined plane meshing pair can increase the output torque of the clutch and increase the reserve coefficient of the clutch so as to increase the force transmission capacity, the sliding friction time of the clutch is reduced, and the fault ablation is avoided; the positioning guide mechanism can ensure that the inclined plane meshing pair is aligned, the meshing and compressing process is smooth, and the clutch can be prevented from vibrating, clamping stagnation and ablation in the engaging process, so that the service life of the clutch can be prolonged, and the overall performance of the clutch can be improved.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic illustration of an explosive structure according to the present invention;
FIG. 2 is a structural cross-sectional view of the present invention;
FIG. 3 is an enlarged view of FIG. 2A;
FIG. 4 is a sectional view of the end face helical tooth meshing pair structure;
fig. 5 is a cross-sectional view of another embodiment of the present invention.
Detailed Description
As shown in the figures, the clutch of the present embodiment includes a pressure plate 2, a friction plate assembly and a center sleeve 3;
the pressure plate 1 is provided with a positioning guide part which forms radial positioning axial guiding fit with the central sleeve 3 near the central sleeve external spline 301, and the positioning guide part and the central sleeve 3 form a positioning guide structure a;
the pressure plate and the central sleeve are meshed through an end face helical tooth meshing pair;
the structure of the clutch naturally comprises an outer cover 1, a pressure plate 2, a central sleeve 3, a lifting plate 9, a main spring 4, a friction plate assembly (a driving friction plate 5 is arranged on the outer cover 1, a driven friction plate 6 is arranged on the central sleeve 3) and the like, wherein the pressure plate 2 or the central sleeve 3 is provided with a spring seat sinking groove for accommodating the main spring, the central sleeve or the pressure plate is correspondingly provided with a spring guide post, the spring guide post penetrates through a through hole arranged at the bottom of the spring seat sinking groove, the lifting plate 9 is basically and fixedly arranged at the end part of the spring guide post through a bolt 10, one end of the main spring supports against the lifting plate, the other end supports against the bottom of the spring seat sinking groove, a pre-tightening force for pressing the pressure plate and the central sleeve is formed, so that; when the clutch needs to be separated, the lifting plate is driven by external force to compress the spring and drive the spring guide post to drive the pressing plate or the central sleeve to move so as to separate and compress the pressing plate and the central sleeve, so that the clutch is separated and separated from transmission; the mechanical structure of the clutch also has other auxiliary components, which belong to the prior art and are not described herein;
the positioning guide part of the pressure plate 2 forms radial positioning and axial guide when the pressure plate 2 and the central sleeve 3 move axially relatively, generally adopts an axial columnar structure, the central sleeve is provided with a corresponding matching part and can be a cylindrical structure matched with the columnar structure, the cylindrical structure can be the original design of the central sleeve or a new design and forms mutual sleeve joint with the columnar structure of the pressure plate, thereby forming the positioning guide, the guide length can be designed according to the requirement of the positioning guide length, the sleeve joint part is radially positioned near an external spline used for installing a driven friction plate at the central sleeve, the guide is radially formed outwards, compared with the central guide of the prior art, the guiding positioning structure is expanded radially outwards, the deflection torque generated during the relative movement is reduced, the positioning guide effect is good, and the stable and smooth joint and separation of the clutch are favorably kept, the eccentric wear of the parts is avoided;
the inclined plane meshing pair refers to two mutually meshed inclined planes (a spiral surface is formed in the axial direction), when relative rotation (small) occurs between the pressure plate and the central sleeve, the inclined plane meshing pair can generate axial component force, under the condition that the inclined direction (turning direction) of the inclined plane is set, the axial component force can tighten the pressure plate and the central sleeve, the inclined plane meshing pair can be meshed and tightened to increase the output torque of the clutch, the reserve coefficient of the clutch is increased, the force transfer capacity is increased, the sliding wear time of the clutch is shortened, and the fault ablation is avoided; the inclined plane meshing pair means that two opposite inclined planes of the pressure plate and the central sleeve along the axial direction are meshed, the inclined direction of the inclined planes is in the circumferential direction, and the axial component force can be related to the rotation, so that the details are not repeated; in the structure, in the driving process of the vehicle, the inclined plane meshing pair is disengaged in the downhill or deceleration process, and the reverse dragging rotation of the clutch is transmitted to the engine under the condition that the clutch is not separated, so that the braking of the vehicle is facilitated.
According to the invention, the inclined plane meshing pair needs stable rotation and axial sliding action between the pressure plate and the central sleeve, and if the problem of deflection torque caused by poor stability of rotation or axial movement occurs, the normal meshing of the clutch is influenced, the inclined plane meshing pair is also unstable in matching, and the smooth connection of the final clutch is influenced; therefore, the inclined plane meshing pair is combined with the positioning guide structure, so that the clutch can be stably, smoothly and quickly jointed, the problem of deflection torque generated in jointing of the conventional clutch is solved, and the smooth running of the meshing surface of the clutch with the inclined plane meshing pair is ensured.
In this embodiment, as shown in fig. 2 and 3, the positioning guide portion is a positioning guide sleeve 201 extending axially, fixed to the pressure plate integrally and coaxial with the pressure plate, the positioning guide sleeve 201 is an annular structure or formed by arranging a plurality of axially extending protrusions annularly, and the positioning guide sleeve 201 is sleeved on an outer circle of the center sleeve 3 corresponding to the center sleeve external spline 301 to form a radial positioning axial guiding fit, so as to form a positioning guide structure a; as shown in fig. 2 and 3, a positioning guide sleeve 201 (fig. 2 and 3, the positioning guide sleeve 201 may be an integral annular structure, or a plurality of protrusion structures are arranged in an annular array) is integrally formed with the pressure plate 2, and extends in the axial direction toward the center sleeve 3, the positioning guide sleeve 201 is directly sleeved on a spline tooth top (of course, may be specially processed into a flat circular surface, which is not described herein) of the center sleeve external spline 301 (which is used for installing the driven friction plate) near the pressure plate side, the positioning guide sleeve 201 and the outer circle of the center sleeve 301 (which is directly sleeved on the spline tooth top for simple and low-cost manufacture) form a socket structure, so as to form a better guiding and positioning structure, the structure is simple to manufacture, stable positioning and guiding of the integral clutch can be realized by directly processing the annular protrusion on the pressure plate, for the clutch itself, the whole volume and the structure are not obviously changed, and the product has good marketability; this structure is applicable to the center sleeve and is provided with the heavy groove of spring holder and the clamp plate is provided with the structure of spring guide pillar, and in this structure, the center sleeve does not generally have interior circle structure, directly forms the loop configuration of overcoat in the center sleeve excircle on the clamp plate, avoids complicated new design and course of working.
As shown in fig. 5, for another clutch structure, the positioning guide portion is a positioning guide boss 201 'fixed to the pressure plate 2' to extend axially and coaxial with the pressure plate, the positioning guide boss 201 'is a cylindrical structure or formed by arranging a plurality of axially extending bosses along a circumferential direction, and the positioning guide boss is sleeved in an inner circle of the center sleeve corresponding to the outer spline of the center sleeve and forms radial positioning axial guiding fit with the inner circle to form a positioning guide structure a'; as shown in the figure, a positioning guide boss 201 '(generally adopting an integral cylindrical boss structure, or a plurality of boss structures arranged in an annular array manner, in this embodiment adopting an integral cylindrical boss structure) is integrally formed with a pressure plate 2, and extends in an axial direction toward a central sleeve direction, the positioning guide boss 201' is directly internally sleeved on an inner circle (of course, a flat circular inner circle can be specially processed, which is not described herein) of a central sleeve external spline 301 '(referring to a spline for mounting a driven friction plate) close to the side of the pressure plate 2, a sleeving structure is formed between the positioning guide boss 201' and the inner circle of the central sleeve 3, so as to form a better guiding and positioning structure, the structure is simple to manufacture, stable positioning and guiding of the integral clutch can be realized by directly processing the positioning guide boss 201 'on the pressure plate 2', for the clutch itself, the whole volume and the structure are not obviously changed, and the product has good marketability; the structure is suitable for a structure that the pressing plate 2' is provided with a spring seat sinking groove and the center sleeve is provided with a spring guide pillar, in the structure, the pressing plate does not generally have an inner circle structure, a cylindrical structure of an inner sleeve in the center sleeve is directly formed on the pressing plate, and complex new design and a machining process are avoided.
In this embodiment, a clearance for relative rotation in the circumferential direction is provided between the pressure plate 2 and the central sleeve 3, and the clearance for relative rotation in the circumferential direction between the pressure plate 2 and the central sleeve 3 can be designed in a matching relationship between the two, in a general design, the two are similar to synchronous rotation, and a space for rotation in the circumferential direction needs to be reserved on the basis of similar to synchronous rotation for clearance for relative rotation, which can be realized by the existing mechanical design means, and is not described herein again; here, the clearance means a space having a relative rotation rather than a large angle of rotation.
When the clutch is engaged for transmission, when the pressure plate has relative rotation in the transmission direction relative to the center sleeve, the inclined plane meshing pair generates axial component force for pulling the pressure plate and the central sleeve close, and due to the existence of the inclined plane meshing pair, under the condition of a set inclined direction, when the normal transmission clutch is engaged and slid, the pressure plate rotates relative to the central sleeve in the transmission direction (the pressure plate has a rotating clearance, and the size of the clearance can be designed according to requirements), under the condition of setting the inclined direction of the inclined plane according to the requirement, the inclined plane meshing pair can generate axial tension force between the pressure plate and the central sleeve, the main spring of the auxiliary clutch enables the clutch to be quickly jointed, the force path for operating and controlling the clutch is reduced, the reserve coefficient of the clutch is increased under the condition of not changing the elastic coefficient of the main spring, so that the comfort and the commodity are improved, and the reliability of the engine is improved; the combination speed is higher, the friction plate sliding process is shortened, the temperature rise of the friction plate is reduced, the heat dissipation effect is better, and the service life of the friction plate of the clutch can be prolonged, so that the service life of the clutch is prolonged; in addition, under the side effect of bevel engagement, a force except for a main spring is provided for pressing the friction plate, the combination force is increased, the combination efficiency is improved, the overall efficiency of the vehicle is improved, and the energy consumption is reduced; because the combination speed is higher, the vibrato of the driven friction plate is eliminated in the sliding and grinding process, the noise of the whole automobile is reduced, and the commodity is better; the technical effect brought by the inclined plane meshing pair is further ensured by combining the positioning guide structure.
The bevel engaging pair is formed by two oppositely engaged bevels, and the structure of the bevels is not limited herein; the inclined plane is formed along the axial direction (not necessarily located on the axial end surface, but can be formed along the axial direction at any position), so that two axially opposite parts are engaged through the inclined plane, and the description is omitted, and the structure is similar to an end surface cam structure; the positioning guide structure of the invention can be applied to the existing sliding clutch, namely, the sliding clutch can be meshed in two directions, the bevel meshing pair of the invention can be defined as a positive bevel meshing pair, and the sliding clutch also has a reverse bevel meshing pair, therefore, under the condition of a set inclined direction, when the normal transmission clutch is in a jointing and sliding process, the pressure plate rotates relative to the central sleeve in the transmission direction (has a rotating clearance, the size of the clearance can be designed according to requirements), under the condition of setting the inclined direction of the positive bevel meshing pair according to requirements, the positive bevel meshing pair can generate axial tensioning force between the pressure plate and the central sleeve, a main spring of the auxiliary clutch enables the clutch to be quickly jointed, the force path for operating the clutch is reduced, the reserve coefficient of the clutch is increased under the condition of not changing the elastic coefficient of the main spring, and the comfort and the commodity are improved, thereby increasing engine reliability; the combination speed is higher, the friction plate sliding process is shortened, the temperature rise of the friction plate is reduced, the heat dissipation effect is better, and the service life of the friction plate of the clutch can be prolonged, so that the service life of the clutch is prolonged; under the side effect of the end face helical tooth meshing, a force except for a main spring is provided for pressing the friction plate, the combination force is increased, the combination efficiency is improved, the overall efficiency of the vehicle is improved, and the energy consumption is reduced; because the combination speed is higher, the vibrato of the driven friction plate is eliminated in the sliding and grinding process, the noise of the whole automobile is reduced, and the commodity is better;
meanwhile, for a sliding clutch, when the clutch is operated and needs to be separated, the central sleeve is reversely dragged to rotate, the pressure plate has a tendency of stopping relative to the central sleeve, at the moment, an axial external thrust is generated between the pressure plate and the central sleeve by a reverse bevel meshing pair, compared with a common clutch, the separation of the clutch is accelerated, and the phenomenon of engine braking is avoided as much as possible during gear backing or oil return deceleration, so that the phenomenon that a rear wheel is reversely dragged to cause the rear wheel to jump or slide under strong moment braking at high speed is avoided, the rear wheel is ensured to maintain a set speed, the vehicle suspension feeling is reduced, and the dangerous conditions such as vehicle picking and the like are avoided; when the motorcycle is bent at a high speed, the clutch is temporarily separated under the action of a reverse bevel meshing pair, for the motorcycle, the motorcycle can directly shift down without operating the clutch, the riding operation process is simplified, and meanwhile, the braking force of an engine can be absorbed to reduce the work of a vehicle suspension, so that the jolt during the turning is reduced; impact force to the inside of the transmission can be obviously reduced, so that abnormal impact and abrasion between parts of the variable counter are reduced;
the bidirectional inclined plane meshing pair of the sliding clutch is matched with the positioning guide structure to act together, the positioning guide mechanism ensures that the end face inclined tooth meshing pair is aligned, the processes of meshing, pressing and disengaging are smooth, and the clutch is prevented from vibrating, clamping stagnation and ablation in the engaging process, so that the service life of the clutch is prolonged, and the overall performance of the clutch is improved.
In this embodiment, a pressing plate dedicated external spline 2011 for mounting a dedicated driven friction plate 8 is formed on the pressing plate 2, and certainly, a dedicated driving friction plate 7 matched with the dedicated driven friction plate 8 is arranged on the outer cover 1, and the matching mode is similar to that of the driving friction plate 5 and the driven friction plate 6 on the clutch, which is not described herein again; in the process of the clutch engaging, driving and sliding, because the central sleeve is loaded, the rotating process lags behind the pressure plate relative to the pressure plate, at the moment, the pressure plate rotates forwards relative to the central sleeve, and because of the effect of the bevel engaging pair, axial tension is generated between the pressure plate and the central sleeve to accelerate the engagement of the clutch; the structure accelerates the engagement of the clutch by utilizing the friction transmission power of the clutch, and has simple structure and low manufacturing cost; meanwhile, after the clutch is engaged, the special friction plate participates in transmission, and the load of the friction plate assembly is reduced, so that the torque transmitted by the external spline of the central sleeve is reduced, and the reliability of the clutch is improved; as shown in the figure, the special driven friction plate is one, and the mode of the special driven friction plate arranged on the pressure plate is the same as the mode of the special driven friction plate arranged on the central sleeve, and the description is omitted; the outer cover 1 is provided with two special driving friction plates which are respectively arranged at two sides of the special driven friction plate.
In this embodiment, the pressing plate 2 is provided with the pressing plate special external spline 2011 for mounting the special driven friction plate 8, the positioning guide sleeve 201 is formed by arranging the spline teeth of the pressing plate special external spline 2011 in the circumferential direction, the positioning guide sleeve 201 is used for directly processing the spline and mounting the special driven friction plate, the new design is fully utilized in structure, the purposes of guiding positioning and mounting the special friction plate are achieved, the whole structure is simple and compact, and the cost is low; the structure is suitable for the structure that the pressure plate is provided with the positioning guide sleeve;
of course, the external spline 2011 special for the pressing plate can be processed on the basis of the annular positioning guide sleeve 201, that is, the positioning guide sleeve is of an integral annular structure, and the external spline special for the pressing plate for mounting the special driven friction plate is formed on the excircle of the positioning guide sleeve, so that the purpose of the invention can be achieved, and the better guiding and positioning effect is achieved.
As shown in fig. 5, in another structure of the present invention, the outer root of the positioning guide boss 201 'forms a pressing plate-dedicated external spline for mounting a dedicated driven friction plate 8'; the outer circle root of the positioning guide boss 201 ' refers to a position where the positioning guide boss 201 ' is connected with the plate surface of the pressing plate ', a special spline is arranged at the root of the positioning guide boss, a set position is reserved between the end part of the center sleeve outer spline 301 ' of the center sleeve 3 ' and the pressing plate 2, and the description is omitted; similarly, the positioning guide boss 201 'is utilized to directly process the spline 2011' and install the special driven friction plate 8 '(the outer cover is provided with the corresponding special driving friction plate 7'), the new design is fully utilized in structure, the purposes of guiding positioning and installing the special friction plate are achieved, the whole structure is simple and compact, and the cost is lower; the structure is suitable for the structure that the pressure plate is provided with the positioning guide boss.
In this embodiment, the central sleeve 3 is provided with a power output journal 304 for transmitting power, the pressure plate 2 is provided with a shaft hole seat for rotationally matching with the power output journal, and the power output journal 304 is matched with the shaft hole to form a second positioning guide structure b; the second positioning guide structure b is combined with the positioning guide structure a, and positioning and guiding are realized from the middle part in the radial direction and the part with larger radial dimension together, so that the axial sliding between the pressure plate and the central sleeve is smoother, and the guiding is more stable; similarly, in another structure (fig. 5), a second positioning guide structure b 'is formed, and is combined with the positioning guide structure a', so that a better effect is still achieved, and further description is omitted.
In this embodiment, the central sleeve 3 is provided with a spring seat sinking groove 302 for accommodating a clutch spring, the pressure plate 2 is provided with a spring guide post 202 penetrating through the spring seat sinking groove 302, and a hole at the bottom of the spring seat sinking groove 302 for penetrating through the spring guide post 202 is a waist-shaped hole, so that a clearance for relative rotation in the circumferential direction is formed between the pressure plate 2 and the central sleeve 3; of course, the length direction of the waist-shaped hole is in the circumferential direction so as to reserve a clearance for relative rotation; as shown in the figure, the lifting plate is tightly supported and mounted at the end part of the spring guide post through a bolt to form a structure that the compression spring drives the pressing plate to axially move so as to separate the clutch, which is not described again;
as shown in fig. 5, in another structure of the present invention, the pressure plate 2 'is provided with a spring seat sinking groove 202' for accommodating a clutch spring, the central sleeve 3 'is provided with a spring guide post 302' penetrating through the spring seat sinking groove 202 ', a hole at the bottom of the spring seat sinking groove 202' for penetrating through the spring guide post is a kidney-shaped hole, so that a clearance for relative rotation in a circumferential direction is provided between the pressure plate 2 'and the central sleeve 3'; of course, the length direction of the waist-shaped hole is in the circumferential direction so as to reserve a clearance for relative rotation; as shown in the figure, the lifting plate is tightly supported and mounted at the end of the spring guide post through a bolt to form a structure that the compression spring drives the central sleeve to axially move so as to separate the clutch, which is not described herein again.
In this embodiment, the bevel gear pair is formed by engaging a bevel tooth surface 2031 provided on the boss 203 of the pressure plate with a bevel groove surface 3031 provided on the hole groove 303 of the center sleeve 3 avoiding the spring seat sink groove;
the wall of one side (circumferential direction) of the hole groove 303 is the inclined groove surface, after the boss 203 is inserted into the hole groove, the inclined tooth surface is attached to the inclined groove surface to form an inclined surface pair meshing structure, the inclined tooth surface from the pressure plate 2 to the center sleeve 3 is inclined towards the transmission direction, and when the transmission is normal, the inclined tooth surface 2031 of the pressure plate 2 cuts into the inclined groove surface 3031 of the hole groove 303 to form an axial tensioning component force; the structure is suitable for a clutch structure that the central sleeve 3 is provided with a spring seat sinking groove for accommodating a clutch spring, and the pressure plate is provided with a spring guide post penetrating through the spring seat sinking groove; the inclined tooth surface and the inclined groove surface can be of a spiral structure similar to that formed by a plane, an arc surface and the like, and the total inclination can achieve the effect of generating axial component force; in the embodiment, the lead angle of the oblique tooth surface and the oblique groove surface is 20-70 degrees, preferably 55-60 degrees, and the lead angle is 55 degrees in the embodiment; the matching structure that the boss 203 is provided with the inclined tooth surface 2031 and the slotted hole 303 is provided with the inclined slot surface 3031 is adopted, so that the original parts and space of the clutch are fully utilized, and the whole volume and the external structure of the clutch do not need to be changed; in addition, the matching structure of the oblique tooth surface and the oblique groove surface also ensures the stability of the meshing process, and is beneficial to forming effective lubrication for a wet clutch;
in another structure of the invention, the bevel engaging pair is formed by engaging a bevel tooth surface arranged on a boss of the central sleeve with a bevel groove surface arranged on a hole groove of the pressure plate to avoid the spring seat sink groove; the structure is basically consistent with the structure, only different setting modes are adopted due to different clutch structures, the structure is suitable for the clutch structure that the pressing plate is provided with a spring seat sunken groove for accommodating a clutch spring, and the center sleeve is provided with a spring guide pillar penetrating through the spring seat sunken groove, so that the description is omitted.
The invention is applied to a sliding clutch, the bevel engaging pair comprises a positive bevel engaging pair and a negative bevel engaging pair, as shown in fig. 4, because the positive bevel engaging pair is the same as the bevel engaging pair in only one bevel engaging pair, in fig. 4, the reference number of the positive bevel engaging pair is the same as that of the bevel engaging pair, and the description is omitted;
in the slip clutch, the bevel gear pair includes a boss 203 (the structure of the boss is a bevel gear) arranged on the pressure plate 2 and a slot 303 (the structure of the slot is a skewed slot) arranged on the center sleeve 3 avoiding the spring seat sink 302, wherein the two sides of the boss 203 are respectively a forward bevel tooth surface 2031 and a reverse bevel tooth surface 2032 inclined in the same direction as the forward bevel tooth surface 2031, the boss 203 penetrates into the slot 303 to enable the forward bevel tooth surface 2031 and the reverse bevel tooth surface 2032 to be respectively engaged with a forward bevel 3031 and a reverse bevel 3032 correspondingly formed on two sides of the slot 303, and the forward bevel 3031 and the reverse bevel 3032 are directly formed by slot walls when the slot is processed, which is not described again; as shown in the figure, three spring seat sinking grooves 302 of the central sleeve 3 are uniformly distributed in the circumferential direction, and three slotted holes 303 are arranged at intervals with the spring seat sinking grooves 302, so that the integral structure is simple, and the stress is uniform;
the two sides refer to two sides in the circumferential direction, the inclined surface on one side of the slot 303 is a positive inclined surface 3031, after the boss 203 is inserted into the slot 301, a positive inclined tooth surface 2031 is attached to the positive inclined surface 3031 to form a meshing structure, the inclination angles of the positive inclined surface 2031 and the positive inclined surface 3031 are consistent, the inclination angle from the pressure plate to the center sleeve is supposed to be towards the transmission direction, and when the transmission is normal, the positive inclined tooth surface 2031 of the boss 203 cuts into the positive inclined surface 3031 of the inclined slot 303 to form an axial tensioning component force; on the contrary, the reverse inclined tooth surface 2032 and the reverse inclined surface 3032 form a joint engagement, the central sleeve is pulled reversely to rotate at the moment of clutch separation, at this time, the pressure plate 2 rotates slowly, the central sleeve 3 rotates forwards relative to the pressure plate 2, and because the inclination direction of the reverse inclined tooth surface is the same as that of the positive engaging tooth surface (generally, the direction is approximately parallel), the reverse inclined tooth surface 2032 cuts outwards relative to the reverse inclined surface 3032 to form an axial component force for separating the reverse inclined tooth surface 2032 and the positive engaging tooth surface; the structure is suitable for a clutch structure in which a spring seat sinking groove for accommodating a clutch spring is sleeved at the center, and a spring guide pillar penetrating through the spring seat sinking groove is arranged on a pressure plate; the positive oblique tooth surface, the positive oblique surface, the reverse oblique tooth surface and the reverse oblique surface can be planes, spiral surfaces, arc surfaces and the like, the total inclination is only required to achieve the effect of generating axial component force, the lift angle of the oblique surfaces is 20-70 degrees, preferably 55-60 degrees, and the lift angle is 55 degrees in the embodiment;
the matching structure of the boss 203 and the slotted hole 303 is adopted, the original parts and space of the clutch are fully utilized, and the whole volume and the external structure of the clutch do not need to be changed; in addition, the matching structure of the helical teeth and the skewed slots also ensures the stability of the meshing process, and is beneficial to forming effective lubrication for the wet clutch;
in the structure shown in fig. 5, the structure is similar to that shown in fig. 4, and the difference is that the bevel engaging pair is formed by engaging a boss arranged on the central sleeve with a slot arranged on the pressure plate to avoid the spring seat sink groove, the two sides of the boss are respectively a forward bevel tooth surface and a reverse bevel tooth surface inclined in the same direction as the forward bevel tooth surface, and the boss penetrates into the slot to enable the forward bevel tooth surface and the reverse bevel tooth surface to be respectively engaged with a forward bevel and a reverse bevel correspondingly formed on the two sides of the slot; the structure is basically the same as the structure, only because the clutch structure is different, and different arrangement modes are adopted, the structure is suitable for the clutch structure that the pressure plate is provided with a spring seat sunken groove for accommodating a clutch spring, and the central sleeve 3 'is provided with a spring guide post 302' penetrating through the spring seat sunken groove, and the description is omitted.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (8)
1. A clutch, characterized in that: comprises a pressure plate, a friction plate component and a central sleeve;
the pressure plate is provided with a positioning guide part which forms radial positioning axial guiding fit with the central sleeve near the external spline of the central sleeve;
the pressure plate and the central sleeve are matched through an inclined surface meshing pair, and when the pressure plate rotates relative to the central sleeve in the transmission direction during clutch connection transmission, the inclined surface meshing pair generates axial component force for drawing the pressure plate and the central sleeve.
2. The clutch of claim 1, wherein: the positioning guide part is a positioning guide sleeve which is axially extended, fixed with the pressing plate into a whole and coaxial with the pressing plate, the positioning guide sleeve is of an annular structure or is formed by arranging a plurality of axially extended bulges along an annular shape, and the outer sleeve of the positioning guide sleeve is sleeved on the outer circle of the corresponding position of the central sleeve and the outer spline of the central sleeve to form radial positioning axial guide fit.
3. The clutch of claim 1, wherein: the positioning guide part is a positioning guide boss which is fixed with the pressing plate into a whole, extends along the axial direction and is coaxial with the pressing plate, the positioning guide boss is of a cylindrical structure or is formed by arranging a plurality of bosses extending along the axial direction along the circumferential direction, and the positioning guide boss is sleeved in an inner circle of a corresponding position of the central sleeve and the central sleeve external spline and forms radial positioning axial guide matching with the inner circle.
4. The clutch of claim 2, wherein: the pressing plate is provided with a pressing plate special external spline for mounting a special driven friction plate, and the positioning guide sleeve is formed by arranging key teeth of the pressing plate special external spline along the circumferential direction; or the positioning guide sleeve is of an integral annular structure, and the excircle of the positioning guide sleeve forms a special pressing plate external spline for mounting the special driven friction plate.
5. The clutch of claim 3, wherein: the excircle of location direction boss is close to the root and forms annular boss, annular boss is used for installing the special external splines of clamp plate of special driven friction disc.
6. The clutch of claim 1, wherein: the central sleeve is provided with a power output shaft neck for transmitting power, the pressing plate is provided with a shaft hole seat which is in running fit with the power output shaft neck, and the power output shaft neck is matched with the shaft hole to form a second positioning and guiding structure.
7. The clutch of claim 1, wherein: the clutch spring is characterized in that a spring seat sinking groove for accommodating a clutch spring is sleeved on the central sleeve, a spring guide post penetrating through the spring seat sinking groove is arranged on the pressure plate, and a hole in the bottom of the spring seat sinking groove for penetrating through the spring guide post is a waist-shaped hole, so that a clearance capable of relatively rotating in the circumferential direction is formed between the pressure plate and the central sleeve;
or the pressing plate is provided with a spring seat sinking groove for accommodating the clutch spring, the center sleeve is provided with a spring guide post penetrating through the spring seat sinking groove, and a hole in the bottom of the spring seat sinking groove for penetrating through the spring guide post is a waist-shaped hole, so that a clearance capable of rotating relatively in the circumferential direction is formed between the pressing plate and the center sleeve.
8. The clutch of claim 1, wherein: the inclined plane meshing pair is formed by meshing an inclined tooth surface arranged on a boss of the pressing plate and an inclined groove surface arranged on a hole groove of the central sleeve in a manner of avoiding the spring seat sinking groove;
or the inclined surface meshing pair is formed by meshing an inclined tooth surface arranged on a boss of the central sleeve and an inclined groove surface arranged on a hole groove of the pressure plate in a way of avoiding the spring seat sinking groove.
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| CN202010055054.3A CN111255815A (en) | 2020-01-17 | 2020-01-17 | Reinforced clutch and engine |
| CN2020100550543 | 2020-01-17 |
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| CN111911552A true CN111911552A (en) | 2020-11-10 |
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| CN202010055054.3A Pending CN111255815A (en) | 2020-01-17 | 2020-01-17 | Reinforced clutch and engine |
| CN202010912452.2A Pending CN111911553A (en) | 2020-01-17 | 2020-09-02 | Anti-clamping stagnation clutch |
| CN202010911692.0A Pending CN111911552A (en) | 2020-01-17 | 2020-09-02 | Clutch device |
| CN202021927051.6U Active CN214499839U (en) | 2020-01-17 | 2020-09-04 | Transmission device for heavy-load motor tricycle |
| CN202010923816.7A Pending CN112343933A (en) | 2020-01-17 | 2020-09-04 | Anti-clamping stagnation strengthened engagement clutch for heavy-load motor tricycle |
| CN202010924431.2A Pending CN111911554A (en) | 2020-01-17 | 2020-09-04 | Intensified joint clutch for heavy-load motor tricycle |
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| CN202010055054.3A Pending CN111255815A (en) | 2020-01-17 | 2020-01-17 | Reinforced clutch and engine |
| CN202010912452.2A Pending CN111911553A (en) | 2020-01-17 | 2020-09-02 | Anti-clamping stagnation clutch |
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| CN202021927051.6U Active CN214499839U (en) | 2020-01-17 | 2020-09-04 | Transmission device for heavy-load motor tricycle |
| CN202010923816.7A Pending CN112343933A (en) | 2020-01-17 | 2020-09-04 | Anti-clamping stagnation strengthened engagement clutch for heavy-load motor tricycle |
| CN202010924431.2A Pending CN111911554A (en) | 2020-01-17 | 2020-09-04 | Intensified joint clutch for heavy-load motor tricycle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114183477A (en) * | 2021-12-13 | 2022-03-15 | 哈尔滨工业大学（威海） | Clutch applied to friction additive manufacturing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111255815A (en) * | 2020-01-17 | 2020-06-09 | 重庆隆鑫机车有限公司 | Reinforced clutch and engine |
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| CN114183477B (en) * | 2021-12-13 | 2024-01-19 | 哈尔滨工业大学（威海） | Clutch applied to friction additive manufacturing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111255815A (en) | 2020-06-09 |
| CN214499839U (en) | 2021-10-26 |
| CN111911554A (en) | 2020-11-10 |
| CN112343933A (en) | 2021-02-09 |
| CN111911553A (en) | 2020-11-10 |
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