CN212985837U - High steady state clutch - Google Patents
High steady state clutch Download PDFInfo
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- CN212985837U CN212985837U CN202021892316.3U CN202021892316U CN212985837U CN 212985837 U CN212985837 U CN 212985837U CN 202021892316 U CN202021892316 U CN 202021892316U CN 212985837 U CN212985837 U CN 212985837U
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Abstract
The utility model discloses a high stable state clutch, which comprises a pressure plate, a friction plate component and a central sleeve; the pressure plate is provided with a positioning guide part which is sleeved with the center sleeve and is close to the external spline of the center sleeve to form radial positioning axial guide matching, the radial positioning axial guide structure is arranged between the pressure plate and the center sleeve near the external spline of the center sleeve, so that the centering precision of the clutch is improved, and the vibration generated when the clutch is combined and separated is reduced; particularly, for the sliding clutch formed by meshing the end face helical teeth between the pressure plate and the central sleeve, the positioning guide mechanism of the upper tree can ensure that the end face helical tooth meshing pair is aligned, the processes of meshing, pressing and disengaging are kept smooth, and the vibration, clamping stagnation and ablation of the clutch in the process of jointing are avoided, so that the service life of the clutch is prolonged, and the overall performance of the clutch is improved.
Description
Technical Field
The utility model relates to an engine part or accessory part, concretely relates to high stable state 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.
Based on above problem, the utility model provides a clutch is provided with stable radial positioning axial guide structure to improve clutch centering precision, produce vibrations when reducing clutch combination and separation, the life of extension clutch improves clutch wholeness ability.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a high stable state clutch is provided with stable radial positioning axial guide structure to improve clutch centering precision, produce vibrations when reducing the clutch and combining and separating, prolong the life of clutch, improve clutch wholeness ability.
The utility model discloses a high stable state clutch, which comprises a pressing 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 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, avoiding eccentric wear of the components.
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.
Further, a spline special for the pressing plate 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; 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, a special pressing plate spline for mounting the special driven friction plate is formed on the pressing plate, the positioning guide sleeve is formed by arranging spline teeth of the special pressing plate 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 and 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 location uide bushing is holistic loop configuration the excircle of location uide bushing forms the special spline of clamp plate that is used for installing special driven friction disc, also can realize the utility model purpose, and has better guiding orientation effect.
Furthermore, a special pressing plate spline for mounting a special driven friction plate is formed at the root part of the excircle of the positioning guide boss; the outer circle root of the positioning guide boss refers to a position where the positioning guide boss is connected with the plate surface of the pressure 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 outer spline of the center sleeve and the pressure plate, and the 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 b is combined with the positioning guide structure a, and the positioning and guiding are realized together from the middle part in the radial direction and the part with larger radial dimension, so that the axial sliding between the pressing plate and the central sleeve is smoother, and the guiding is more stable.
The utility model has the advantages that: the high-stable-state clutch of the utility model is provided with the radial positioning axial guide structure between the pressure plate and the central sleeve near the external spline of the central sleeve, thereby improving the centering precision of the clutch and reducing the vibration generated when the clutch is combined and separated; particularly, for the sliding clutch formed by meshing the end face helical teeth between the pressure plate and the central sleeve, the positioning guide mechanism ensures that the end face helical tooth meshing pair is aligned, and the meshing, the pressing and the disengaging are smooth, so that the vibration, the clamping stagnation and the ablation of the clutch in the jointing process are avoided, the service life of the clutch is prolonged, and the overall performance of the clutch is improved.
Drawings
The invention will be further described with reference to the following figures and examples:
fig. 1 is a schematic diagram of the explosion structure of the present invention;
FIG. 2 is a sectional view of the structure 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 another structural section view of the present invention.
Detailed Description
As shown in the figure, the high steady state clutch of the embodiment comprises a pressure plate 2, a friction plate assembly and a central 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 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, avoiding eccentric wear of the components.
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 the present embodiment, a clearance for relative rotation in the circumferential direction is provided between the pressure plate 2 and the central sleeve 3, and the pressure plate 2 and the central sleeve 3 are engaged by an end face helical tooth engaging pair; the end face helical tooth meshing pair is meshed in two rotating directions; the clearance between the pressure plate 2 and the central sleeve 3 which relatively rotates in the circumferential direction can be designed on the matching relationship of the two, the common design is that the two are approximately synchronous in rotation, and the clearance with the relative rotation needs to reserve a space rotating in the circumferential direction on the basis of the approximate synchronous rotation, and the clearance can be realized by the existing mechanical design means, and is not repeated; here, the clearance means a space having a relative rotation rather than a large angle of rotation.
When the clutch is engaged for transmission (in a sliding grinding process), when the pressure plate 2 has relative rotation relative to the central sleeve 3 in the transmission direction, the end face helical tooth meshing pair generates an axial component force for pulling the pressure plate 2 and the central sleeve 3 closer, and when the clutch is disengaged, when the central sleeve 3 has relative rotation relative to the pressure plate 2 in the transmission direction, the end face helical tooth meshing pair generates an axial component force for separating the central sleeve and the pressure plate; the helical tooth meshing pair is formed by two oppositely meshed helical teeth, and the structure of the helical teeth is not limited here; the end face helical teeth refer to helical teeth formed along the axial direction (not necessarily located on the axial end face, but can be formed along the axial direction at any position), so that two axially opposite parts are meshed through the helical teeth, and the description is omitted, and the end face helical teeth are similar to an end face cam structure;
because the end face helical tooth meshing pair exists and is meshed in two rotation directions, under the condition of a set inclination direction, in the process of normal transmission clutch engagement and slipping, the pressure plate rotates relative to the central sleeve in the transmission direction (the pressure plate has a rotation clearance, and the size of the clearance can be designed according to requirements), under the condition of setting the inclination direction of the helical teeth according to requirements, the end face helical tooth meshing pair can generate axial tension between the pressure plate and the central sleeve, a main spring of the auxiliary clutch enables the clutch to be rapidly engaged, the force path of controlling the clutch is reduced, the reserve coefficient of the clutch is increased, the comfort and the commodity are improved, and the reliability of the engine is increased; 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, when the clutch is operated and needs to be separated, the center sleeve is reversely dragged to rotate, the pressure plate has a tendency of stopping relative to the center sleeve, at the moment, an axial external thrust is generated between the pressure plate and the center sleeve by the end face helical tooth meshing pair, compared with a common clutch, the separation of the acceleration clutch avoids the phenomenon of engine braking as much as possible during gear backing or oil return deceleration, thereby avoiding rear wheel jumping or slipping caused by strong moment braking due to reverse dragging of the rear wheel at high speed, ensuring that the rear wheel maintains a set vehicle speed, reducing vehicle pause feeling and avoiding the occurrence of comparatively dangerous conditions such as vehicle pinching; when the motorcycle is bent at a high speed, the clutch is temporarily separated under the action of the end face helical tooth meshing pair, and for the motorcycle, the motorcycle can directly shift down without operating the clutch, so that the riding operation process is simplified, and meanwhile, the brake force of an engine can be absorbed to reduce the work of a vehicle suspension, so that the jolt during turning is reduced; impact force to the inside of the transmission can be significantly reduced, thereby reducing abnormal impact and abrasion between parts of the transducer.
In order to enhance the transmission effect and cooperate with the positioning and guiding structure, in this embodiment, a pressing plate dedicated 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 cooperating with the dedicated driven friction plate 8 is provided on the outer cover 1, and the cooperation manner 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 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 outer cover 1 is provided with two special driving friction plates which are respectively arranged at two sides of the special driven friction plates;
the end face helical tooth meshing pair structure is combined with the positioning guide structure, and a radial positioning axial guide structure is arranged between the pressure plate and the central sleeve near the external spline of the central sleeve, so that the centering precision of the clutch is improved, and the vibration generated when the clutch is combined and separated is reduced; particularly, for the sliding clutch formed by meshing the end face helical teeth between the pressure plate and the central sleeve, the positioning guide mechanism ensures that the end face helical tooth meshing pair is aligned, and the meshing, the pressing and the disengaging are smooth, so that the vibration, the clamping stagnation and the ablation of the clutch in the jointing process are avoided, the service life of the clutch is prolonged, and the overall performance of the clutch is improved.
In this embodiment, a pressing plate dedicated spline 2011 for mounting the dedicated driven friction plate 8 is formed on the pressing plate 2, the positioning guide sleeve 201 is formed by arranging spline teeth of the pressing plate dedicated spline 2011 in the circumferential direction, the spline is directly processed by using the positioning guide sleeve 201, and the dedicated driven friction plate is mounted, so that a new design is fully utilized in structure, the purposes of guiding positioning and mounting the dedicated 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, can process clamp plate special spline 2011 on the basis of annular location uide bushing 201, promptly the location uide bushing is holistic loop configuration the excircle of location uide bushing forms the special spline of clamp plate that is used for installing special driven friction disc, also can realize the utility model purpose, and has better direction location effect.
As shown in fig. 5, in another structure of the present invention, the outer circumference root of the positioning guiding boss 201 'forms a pressing plate dedicated 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 pressing plate 2 'is provided with a spring seat sinking groove 202' for accommodating the clutch spring, the central sleeve 3 'is provided with a spring guide post 302' passing through the spring seat sinking groove 202 ', and a hole at the bottom of the spring seat sinking groove 202' for passing through the spring guide post is a kidney-shaped hole, so that a clearance for relative rotation in the circumferential direction is provided between the pressing 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 end-face skewed tooth meshing pair is formed by meshing a skewed tooth 203 arranged on the pressure plate 2 with a skewed slot 303 arranged on the center sleeve 3 and avoiding the spring seat sunken slot 302, two sides of the skewed tooth 203 are respectively a positive meshing tooth surface 2031 and a reverse meshing tooth surface 2032 inclined in the same direction as the positive meshing tooth surface 2031, the skewed tooth 203 penetrates into the skewed slot 303 to enable the positive meshing tooth surface 2031 and the reverse meshing tooth surface 2032 to be respectively meshed with a positive meshing inclined surface 3031 and a reverse meshing inclined surface 3032 correspondingly formed on two sides of the skewed slot 303, and the positive meshing inclined surface 3031 and the reverse meshing inclined surface 3032 are directly formed by slot walls when the skewed slot is machined, 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 inclined grooves 303 are arranged at intervals with the spring seat sinking grooves 302, so that the overall 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 chute 303 is a positive meshing inclined surface 3031, after the inclined teeth 203 are inserted into the chute 301, a positive meshing tooth surface 2031 is attached to the positive meshing inclined surface 3031 to form a meshing structure, the inclination angle of the positive meshing tooth surface 2031 is consistent with that of the positive meshing inclined surface 3031, the inclination angle from the pressure plate to the central sleeve is supposed to be towards the transmission direction, and when the transmission is normal, the positive meshing tooth surface 2031 of the inclined teeth 203 cuts into the positive meshing inclined surface 3031 of the chute 303 to form an axially tensioned component force; on the contrary, the reverse engaging flank 2032 and the reverse engaging inclined surface 3032 form a joint engagement, the central sleeve is pulled reversely to rotate at the moment of clutch disengagement, at this time, the pressure plate 2 rotates slowly, the central sleeve 3 rotates forward relative to the pressure plate 2, and because the inclination direction of the reverse engaging flank is the same as that of the forward engaging flank (generally, the direction is approximately parallel), the reverse engaging flank 2032 cuts outwards relative to the reverse engaging inclined surface 3032 to form an axial component force for separating the reverse engaging flank 2032 and the forward engaging flank; 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 engaging tooth surface, the positive engaging inclined surface, the negative engaging tooth surface and the negative engaging inclined surface can be straight tooth surfaces or inclined surfaces, and can also be spiral surfaces or arc surfaces, the total inclination can achieve the effect of generating axial component force, the lift angle of the inclined surfaces is 20-70 degrees, preferably 55-60 degrees, and the lift angle is 55 degrees in the embodiment;
the matching structure of the helical teeth 203 and the oblique slots 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;
the utility model discloses in the structure as shown in fig. 5, the structure is similar to the structure shown in fig. 4, the difference is only that the end face skewed tooth meshing pair is formed by the skewed tooth that sets up in the center cover and the chute meshing that avoids the spring seat heavy groove set up in the clamp plate, skewed tooth both sides are respectively for positive engaging tooth face and the anti-engaging tooth face that inclines to the same direction with positive engaging tooth face, the skewed tooth penetrates the chute makes positive engaging tooth face and anti-engaging tooth face respectively with the chute both sides correspond positive engaging inclined plane and the anti-engaging inclined plane meshing that forms; 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, 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 the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (6)
1. A high steady state clutch, characterized by: comprises a pressure plate, a friction plate component and a central sleeve;
the pressure plate is provided with a positioning guide part which is sleeved near the external spline of the central sleeve to form radial positioning and axial guiding matching with the central sleeve.
2. The high steady state 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 high steady state 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 high steady state clutch of claim 2, wherein: a special pressing plate spline for mounting a special driven friction plate is formed on the pressing plate, and the positioning guide sleeve is formed by arranging the spline teeth of the special pressing plate 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 spline for mounting the special driven friction plate.
5. The high steady state clutch of claim 3, wherein: and the root part of the excircle of the positioning guide boss forms a special pressing plate spline for mounting a special driven friction plate.
6. The high steady state 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021892316.3U CN212985837U (en) | 2020-09-02 | 2020-09-02 | High steady state clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021892316.3U CN212985837U (en) | 2020-09-02 | 2020-09-02 | High steady state clutch |
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| Publication Number | Publication Date |
|---|---|
| CN212985837U true CN212985837U (en) | 2021-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021892316.3U Active CN212985837U (en) | 2020-09-02 | 2020-09-02 | High steady state clutch |
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| CN (1) | CN212985837U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911554A (en) * | 2020-01-17 | 2020-11-10 | 隆鑫通用动力股份有限公司 | Intensified joint clutch for heavy-load motor tricycle |
-
2020
- 2020-09-02 CN CN202021892316.3U patent/CN212985837U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911554A (en) * | 2020-01-17 | 2020-11-10 | 隆鑫通用动力股份有限公司 | Intensified joint clutch for heavy-load motor tricycle |
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