CN116292827A - Transmission cone pulley and transmission cone pulley group thereof - Google Patents

Abstract

The invention provides a transmission cone pulley and a transmission cone pulley group thereof, wherein the transmission cone pulley comprises a first cone disc and a second cone disc, the cone ends of the first cone disc and the second cone disc are opposite, the cone ends are circumferentially distributed in a staggered way and are solid convex parts and notch parts, and the solid convex parts of the first cone disc and the second cone disc are mutually inserted into the notch parts of each other, so that the first cone disc and the second cone disc can move relatively along the axial direction of each other. The transmission cone pulley group comprises a driving shaft, a driven shaft and a flexible transmission element, wherein the driving shaft is provided with a driving cone pulley, the driven shaft is provided with a driven cone pulley, the driving cone pulley and the driven cone pulley are transmission cone pulleys, the middle parts of wheel grooves of the driving cone pulley and the driven cone pulley are opposite, and the flexible transmission element simultaneously bypasses the wheel grooves of the driving cone pulley and the driven cone pulley. The invention reduces the wheel groove angle of the cone pulley, eliminates or reduces the radial deflection of the flexible transmission element, improves the dynamic property and the economical efficiency of the automobile and prolongs the service life of accessories.

Description

Transmission cone pulley and transmission cone pulley group thereof

Technical Field

The invention relates to the technical field of wheel chasing type stepless speed variators, in particular to a speed changer cone pulley and a transmission cone pulley group thereof.

Background

The CVT continuously variable transmission uses a V-shaped transmission belt as a flexible transmission element, wherein two ends of the V-shaped transmission belt are respectively sleeved on cone wheels consisting of two cone discs, and the V-shaped transmission belt bypasses a wedge-shaped groove between the two cone discs. Because the two conical discs of the cone pulley can move relatively along the axial direction to change the width of the wedge-shaped groove, the V-shaped transmission belt moves radially relative to the cone pulley, the effective radius of the V-shaped transmission belt, which bypasses the cone pulley, is changed, the transmission ratio is further changed, and stepless speed change is realized. Therefore, the speed ratio is a series of continuous values, and good economy, power performance and driving smoothness are realized.

Because the radial force applied by the V-shaped transmission belt cannot be eliminated, under a certain transmission ratio, the V-shaped transmission belt can generate certain radial deflection under the action of radial force, so that the transmission ratio is changed, and the dynamic property and the economical efficiency of the automobile are directly affected. The movable range of the conical disc is limited by the width of the wedge-shaped groove and the width of the V-shaped transmission belt, so that in order to fully adjust the transmission ratio in the limited movable range of the conical disc, the V-shaped transmission belt needs to have enough radial movement relative to the conical wheel, the wedge angle theta of the wedge-shaped groove (corresponding to the V-shaped angle of the V-shaped transmission belt) is smaller, the V-shaped transmission belt generates larger radial deflection under the action of radial force, the dynamic property and the economical efficiency of an automobile are directly influenced, the fuel consumption of the automobile is increased, the V-shaped transmission belt is seriously worn, and the service life of accessories is reduced.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: a cone pulley/cone pulley set is provided having a sufficiently large movable range of the cone pulley to ensure a sufficient gear ratio adjustment range while eliminating or reducing radial deflection of the flexible drive member.

The technical scheme for solving the technical problems is as follows:

the invention provides a transmission cone pulley which comprises a first cone disc and a second cone disc, wherein cone ends of the first cone disc and the second cone disc are opposite, the cone ends are circumferentially provided with solid protruding parts and notch parts in a staggered mode, and the solid protruding parts of the first cone disc and the second cone disc are mutually inserted into the notch parts of each other, so that the first cone disc and the second cone disc can move relatively along the axial direction of each other.

Further, the solid convex portions of the first and second conical discs and the notched portions of each other have the same width in the circumferential direction.

By adopting the further scheme, when the solid protruding parts of the first conical disc and the second conical disc are inserted into the notch parts, the cross sections of the solid protruding parts of the two conical discs are contacted with each other, and under the condition that the peripheries of the solid protruding parts of the two conical discs are alternately contacted with the flexible transmission element, the contact area of the conical wheel and the flexible transmission element along the circumferential direction is increased, and the transmission efficiency is improved. In addition, the flexible transmission element is prevented from being embedded into a gap between the solid convex part sections of the two conical discs, so that the flexible transmission element is protected.

Further, the solid convex portions of the first conical disc and the second conical disc are the same as the gap portions of the first conical disc and the second conical disc in the circumferential direction.

By adopting the further scheme, the widths of the solid convex parts of the two conical discs are the same, so that the two conical discs are in symmetrical contact with the flexible transmission element, the transmission stability is good, and the service life of the element is long.

Further, the large ends of the first conical disc and the second conical disc are respectively provided with a large end disc, the middle of the large end disc is provided with a transmission structure which is used for being in transmission fit with the shaft where the large end discs are located, and the entity protruding portion is integrally connected with the end face of the large end disc.

By adopting the further scheme, the large end disc can be used for being matched with the shaft in which the large end disc is positioned in a transmission manner, so that the reliability of the transmission of the wheel shaft is improved.

Further, a reinforcing cylinder is further arranged in the middle of the large end disc, and the outer circumferential surface of the reinforcing cylinder is in contact with the inner circumferential surface of the solid protruding portion.

By adopting the further scheme, the guide function is realized on the relative axial movement of the first conical disc and the second conical disc, the relative radial movement of the entity convex parts of the first conical disc and the second conical disc can be effectively prevented, the slipping of the flexible transmission element is prevented, and the transmission stability is improved; the reinforcing cylinder can be in transmission fit with the large end disc of the conical disc, so that the rotation states of the two conical discs at any time are kept consistent, mechanical shake is reduced, and driving stability is improved.

Further, the large end disc and the entity protruding part of the first conical disc are fixedly connected with the reinforcing cylinder in the middle of the first conical disc, and the large end disc and the entity protruding part of the second conical disc are in sliding fit with the reinforcing cylinder in the middle of the second conical disc.

By adopting the further scheme, the cone pulley is favorable for having good rigidity, and the position of the reinforcing cylinder relative to the cone pulley is kept stable.

Further, the large end disc of the second conical disc is in transmission fit with the reinforcing cylinder.

By adopting the further scheme, for example, the large end disc is connected with the reinforcing cylinder through the key, and only the key groove and the transmission key of the reinforcing cylinder are required to be kept long enough, so that the large end disc and the reinforcing cylinder can be driven to rotate mutually, and the rotation states of the two conical discs are kept consistent at any moment.

Further, rack structures are arranged on the outer peripheral sides of the solid protruding parts of the first conical disc and the second conical disc and are used for being matched with the flexible transmission element for transmission; the rack structures of the first conical disc and the second conical disc form a diagonal rack.

By adopting the further scheme, the characteristic of high contact rate of the helical rack is utilized, so that slipping with a flexible transmission element is avoided, and the transmission efficiency is improved.

The invention also provides a transmission cone pulley group based on the transmission cone pulley, which comprises a driving shaft, a driven shaft and a flexible transmission element, wherein the driving shaft is provided with the driving cone pulley, the driven shaft is provided with the driven cone pulley, the driving cone pulley and the driven cone pulley are both transmission cone pulleys, the middle parts of the wheel grooves of the driving cone pulley and the driven cone pulley are opposite, and the flexible transmission element bypasses the wheel grooves of the driving cone pulley and the driven cone pulley simultaneously.

The invention reduces the corresponding wedge angle of the wheel groove angle theta of the cone pulley, eliminates or reduces the radial deflection of the flexible transmission element, improves the dynamic property and economy of the automobile and the service life of accessories, and does not reduce the adjustable range of the transmission ratio; meanwhile, the abrasion of the flexible transmission element is reduced, and the service life of the accessory is prolonged.

Further, the outer peripheral sides of the solid protruding parts of the first conical disc and the second conical disc are matched with the flexible transmission element through a rack structure; the rack structures of the first conical disc and the second conical disc form a bevel rack of a conical wheel of the transmission; and the oblique racks of the driving cone pulley and the driven cone pulley are obliquely opposite;

the flexible transmission element comprises a steel belt and discs, a plurality of discs are connected in series on the annular steel belt, and a meshing structure formed by the edges of the discs is used for being matched with the rack structure for transmission.

By adopting the further scheme, the edges of the discs have more abrasion allowance, and the worn discs still have a meshing structure, so that the service life of the meshing structure is prolonged compared with that of a traditional V-shaped transmission belt; in addition, the flexible transmission element needs to press the peripheral surface of the cone pulley, one part of the disc edge presses the periphery of the solid protruding part at the position of the solid protruding part of the flexible transmission element, and the other part of the disc edge is embedded into the notch part of the other cone disc, so that the effect of preventing slipping is achieved; in addition, because the series connection structure of the disc and the steel belt has certain flexibility, when the effective radius of the cone pulley contacted with the flexible transmission element changes, the local bending rate of the steel belt changes, and the part of the disc positioned on the inner side of the steel belt can be opened and closed along with the change of the effective radius so as to adapt to the change of the effective radius, and the speed change process is smoother; in addition, the oblique racks of the driving cone pulley are obliquely opposite to the oblique racks of the driven cone pulley, so that the self-tightening effect of the flexible transmission element is improved, and slipping is avoided; the structure of the serial connection of the discs has certain mobility, so that the discs can be movably adapted to diagonal opposite diagonal racks, and the transmission is convenient.

Further, the steel belt comprises a plurality of thin sheets which are overlapped from the inner ring side to the outer ring side of the steel belt, and the section of the steel belt is elliptical; the part of the disc, which is positioned at the inner ring side of the steel belt, is in an elliptical arc shape.

By adopting the further scheme, the overlapping structure of the plurality of sheets ensures that the sheets have mobility, and the flexibility of the curvature change of the steel belt is improved; the elliptic steel belt has high strength, uniform stress, good flexibility of curvature change, easy change of local curvature radius and effective prevention of disc rotation around the steel belt; the semi-elliptic disc can increase the contact length with the rack structure, prevent slipping, is reliable in transmission, and is in contact with the rack structure through an arc shape, so that the abrasion is small.

The beneficial effects of the invention are as follows:

the solid convex parts of the first conical disc and the second conical disc are mutually inserted into the notch parts of each other, so that the first conical disc and the second conical disc can move relatively along the axial direction of each other, and the two conical discs have a large enough relative movable distance, thereby reducing the wheel groove angle theta of the conical wheel, eliminating or reducing the radial offset of the flexible transmission element, improving the dynamic property and the economical efficiency of an automobile and prolonging the service life of accessories, and not reducing the adjustable range of the transmission ratio; meanwhile, the abrasion of the flexible transmission element is reduced, and the service life of the accessory is prolonged.

Drawings

Fig. 1 is a schematic diagram of the structure of a cone pulley of the transmission of the present invention.

Fig. 2 is a schematic structural view of the first conical disc.

Fig. 3 is a left side view of fig. 2.

Fig. 4 is a right side view of fig. 2.

Fig. 5 is a schematic structural view of the second conical disc from the perspective of fig. 4.

Fig. 6 is a schematic structural view of the driving cone pulley set of the present invention.

Fig. 7 is a schematic structural view of a flexible transmission element of the present invention.

FIG. 8 is a schematic view of a disc structure of a flexible transmission element.

In the drawings, the technical features represented by the reference numerals are as follows:

1-a first conical disc; 2-a second conical disk; 3-a solid raised portion; a 4-notch portion; 5-large end disc; 6-reinforcing the cylinder; 7-a driving shaft; 8-a driven shaft; 9-a flexible transmission element; 10-wheel groove; 11-rack structure; 12-steel strip; 13-disc; 14-flakes; θ—groove angle.

Detailed Description

The principles and features of the present invention are described below with examples given for the purpose of illustration only and are not intended to limit the scope of the invention.

The present invention is described with reference to fig. 1-8.

Embodiment one, as shown in fig. 1-5:

the invention provides a transmission cone pulley, which comprises a first cone disc 1 and a second cone disc 2, wherein the cone ends of the first cone disc 1 and the second cone disc 2 are opposite, the cone ends are distributed in a staggered way along the circumferential direction for solid convex parts 3 and notch parts 4, and the solid convex parts 3 of the first cone disc 1 and the second cone disc 2 are mutually inserted into the notch parts 4 of each other, so that the first cone disc 1 and the second cone disc 2 can move relatively along the axial direction of each other.

Principle of: the transmission cone pulley is used in pairs on a driving shaft 7 and a driven shaft 8, and the driving cone pulley is arranged on the driving shaft 7; the driven cone pulley is arranged on the driven shaft 8, when the first cone disc 1 and the second cone disc 2 are driven to move relatively along the axial direction of the driven shaft, the first cone disc 1 and the second cone disc 2 of the driving cone pulley are relatively close to each other, and the effective radius contacted with the flexible transmission element 9 is increased; the first cone disc 1 and the second cone disc 2 of the driven cone pulley are relatively far away, and the effective radius contacted with the flexible transmission element 9 is reduced; gradually transition from a low-speed transmission state (small-wheel large-wheel belt) to a high-speed transmission state (large-wheel small-wheel belt). On the contrary, the principle of transition from a high-speed transmission state (large wheel with small wheel) to a low-speed transmission state (small wheel with large wheel) is the same. During transmission, the outer circumferences of the solid convex parts 3 of the first cone disc 1 and the second cone disc 2 of the same cone pulley are alternately contacted with the flexible transmission element 9, and the outer circumferences of the solid convex parts 3 of the two cone discs are mutually driven by the matching of the inner circumferences of the flexible transmission element 9; at this time, the flexible transmission element 9 needs to press the peripheral surface of the cone pulley, specifically, one side of the flexible transmission element 9 presses the periphery of the solid protruding portion 3 at the position of the solid protruding portion 3, and the other side of the flexible transmission element can be slightly embedded into the notch portion 4 of the other cone disc, so as to play a role in preventing slipping.

According to the invention, through the mutual insertion of the solid convex parts 3 of the first conical disc 1 and the second conical disc 2 into the gap parts 4 of each other, the first conical disc 1 and the second conical disc 2 can move relatively along the axial direction of each other, so that the two conical discs have a large enough relative movable distance, the wheel groove angle theta (corresponding to the wedge angle) of the conical wheel is reduced, the radial deflection of the flexible transmission element 9 is eliminated or reduced, the dynamic property and economical efficiency of an automobile and the service life of accessories are improved, and the adjustable range of the transmission ratio is not reduced; at the same time, wear of the flexible transmission element 9 is reduced, and the service life of the fitting is improved.

Further, the widths of the solid convex portion 3 and the notch portion 4 of the first conical disc 1 and the second conical disc 2 in the circumferential direction are the same.

With the further proposal, when the solid convex parts 3 of the first conical disc 1 and the second conical disc 2 are inserted into the notch parts 4, the cross sections of the solid convex parts 3 of the two conical discs are contacted with each other, and under the condition that the peripheries of the solid convex parts 3 of the two conical discs are alternately contacted with the flexible transmission element 9, the contact area of the conical wheels with the flexible transmission element 9 along the circumferential direction is increased, and the transmission efficiency is improved. Furthermore, the flexible transmission element 9 is prevented from being embedded in the gap between the solid raised portions 3 of the two conical discs, protecting the flexible transmission element 9. The widths of the solid convex parts 3 of the two conical discs are the same, so that the two conical discs are symmetrically contacted with the flexible transmission element 9, the transmission stability is good, and the service life of the element is long.

Further, as shown in fig. 2-5: the large ends of the first conical disc 1 and the second conical disc 2 are respectively provided with a large end disc 5, the middle part of the large end disc 5 is provided with a transmission structure used for being in transmission fit with a shaft where the large end discs are located, and the entity protruding part 3 is integrally connected with the end face of the large end disc 5.

Note that: the middle part of the large end disc 5 is provided with a transmission structure which is used for being in transmission fit with the shaft where the large end disc is positioned, and the transmission structure can be a key groove, a spline shaft and the like.

By adopting the further scheme, the large end disc 5 can be used for being in transmission fit with the shaft where the large end disc is positioned, so that the reliability of the transmission of the wheel shaft is improved.

Further, a reinforcing cylinder 6 is further provided in the middle of the large end disc 5, and the outer circumferential surface of the reinforcing cylinder 6 is in contact with the inner circumferential surface of the solid protruding portion 3.

By adopting the further scheme, the guiding effect on the relative axial movement of the first conical disc 1 and the second conical disc 2 is achieved, the relative radial movement of the entity convex parts 3 of the first conical disc 1 and the second conical disc 2 can be effectively prevented, the flexible transmission element 9 is prevented from slipping, and the transmission stability is improved; the reinforcing cylinder 6 can be in transmission fit with the large end disc 5 of the conical disc, so that the rotation states of the two conical discs at any time are kept consistent, mechanical shake is reduced, and driving stability is improved.

Further, the large end disc 5 and the solid protruding portion 3 of the first conical disc 1 are fixedly connected with the reinforcing cylinder 6 in the middle of the first conical disc, and the large end disc 5 and the solid protruding portion 3 of the second conical disc 2 are in sliding fit with the reinforcing cylinder 6 in the middle of the second conical disc.

With the further solution described above, it is advantageous to provide the cone pulley with good rigidity and to keep the position of the reinforcement cylinder 6 stable with respect to the cone pulley.

Further, the large end disc 5 of the second conical disc 2 is in driving fit with the reinforcing cylinder 6.

By adopting the further scheme, for example, the large end disc 5 is connected with the reinforcing cylinder 6 through keys, and only the key groove and the transmission key of the reinforcing cylinder 6 are required to be kept long enough, so that the large end disc 5 and the reinforcing cylinder 6 are in sliding fit, and the large end disc 5 and the reinforcing cylinder 6 can mutually rotate in a transmission manner, and the rotation states of the two conical discs are kept consistent at any time.

Further, the outer peripheral sides of the solid convex parts 3 of the first conical disc 1 and the second conical disc 2 are provided with rack structures 11, and the rack structures 11 are used for being matched with the flexible transmission element 9 for transmission; the rack structures 11 of the first conical disc 1 and the second conical disc 2 form a diagonal rack.

By adopting the further scheme, the characteristic of high contact rate of the helical rack is utilized, the slipping with the flexible transmission element 9 is avoided, and the transmission efficiency is improved.

Embodiment two, as shown in FIGS. 6-8:

the invention also provides a transmission cone pulley group based on the transmission cone pulley, which comprises a driving shaft 7, a driven shaft 8 and a flexible transmission element 9, wherein the driving cone pulley is arranged on the driving shaft 7, the driven shaft 8 is provided with the driven cone pulley, the driving cone pulley and the driven cone pulley are both transmission cone pulleys, the middle parts of the driving cone pulley and a wheel groove 10 of the driven cone pulley are opposite, and the flexible transmission element 9 bypasses the wheel groove 10 of the driving cone pulley and the driven cone pulley simultaneously.

Note that: the wheel groove 10 is an annular space formed by intersecting portions when the tapered ends of the first and second conical disks 1 and 2 are inserted into each other.

The invention reduces the corresponding wedge angle of the wheel groove angle theta of the cone pulley, eliminates or reduces the radial deflection of the flexible transmission element 9, improves the dynamic property and economy of the automobile and the service life of accessories, and does not reduce the adjustable range of the transmission ratio; at the same time, wear of the flexible transmission element 9 is reduced, and the service life of the fitting is improved.

Further, as shown in fig. 7-8: the outer peripheral sides of the solid convex parts 3 of the first conical disc 1 and the second conical disc 2 are matched with the flexible transmission element 9 through a rack structure 11; the rack structures 11 of the first conical disc 1 and the second conical disc 2 form a bevel rack of a cone pulley of the transmission; and the oblique racks of the driving cone pulley and the driven cone pulley are obliquely opposite;

the flexible transmission element 9 comprises a steel belt 12 and discs 13, a plurality of discs 13 are connected in series on the annular steel belt 12, and a meshing structure formed by the edges of the discs 13 is used for being matched with the rack structure 11 for transmission.

By adopting the further scheme, the edges of the discs 13 have more abrasion allowance, and the worn discs still have a meshing structure, so that the service life of the meshing structure is prolonged compared with that of a traditional V-shaped transmission belt; in addition, the flexible transmission element 9 needs to press the peripheral surface of the cone pulley, and one part of the edge of the disc 13 presses the periphery of the solid convex part 3 at the position of the solid convex part 3, and the other part of the edge of the disc is embedded into the notch part 4 of the other cone disc to play a role in preventing slipping; in addition, because the series connection structure of the disc 13 and the steel belt 12 has certain flexibility, when the effective radius of the cone pulley contacted with the flexible transmission element 9 changes, the local bending rate of the steel belt 12 changes, and the part of the disc 13 positioned on the inner side of the steel belt 12 can be opened and closed along with the change of the effective radius, so that the speed change process is smoother; in addition, the oblique racks of the driving cone pulley are obliquely opposite to the oblique racks of the driven cone pulley, so that the self-tightening effect of the flexible transmission element 9 is improved, and slipping is avoided; the structure of the plurality of discs 13 connected in series has certain mobility, so that the discs 13 can be movably adapted to diagonal opposite diagonal racks, and the matching transmission is convenient.

Further, the steel belt 12 comprises a plurality of thin sheets 14 which are overlapped from the inner ring side to the outer ring side of the steel belt 12, and the section of the steel belt 12 is elliptical; the disk 13 is in an elliptical arc shape at the inner ring side of the steel belt 12.

By adopting the further scheme, the overlapping structure of the plurality of sheets 14 ensures that the sheets 14 have mobility, so that the flexibility of the curvature change of the steel belt is improved; the elliptic steel belt 12 has high strength, uniform stress, good flexibility of curvature change, easy change of local curvature radius and effective prevention of the disc 13 from rotating around the steel belt 12; the semi-elliptic disc 13 can increase the contact length with the rack structure 11, prevent slipping, is reliable in transmission, and is in contact with the rack structure 11 through an arc shape, so that the abrasion is small.

In the description of the present invention, it is to be understood that if descriptive terms indicating orientation, direction or positional relationship are present, such as: the directions or positional relationships indicated in the present specification are directions or positional relationships based on the drawings for convenience of understanding of the present invention and for simplification of description, only, and do not indicate or imply that the parts, elements or integers referred to must have a specific direction, be constructed and operated in a specific direction, and thus are not to be construed as limiting the present invention.

Further, if an order description term occurs, for example: "first," "second," etc. are used in this specification for convenience in understanding or simplifying the description, for example, in order to distinguish between a plurality of technical features that have the same type or function, but may have to be individually referred to, and this specification may be referred to by a prefix or suffix sequence description term. Thus, no indication or implication of relative importance or an implication of the number of technical features indicated is to be understood. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, if structural relative action description terms are used, for example: "mounted," "connected," "secured," and the like are to be construed broadly, unless otherwise specifically indicated and limited. For example, "mounted," "connected," etc., may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be the communication between the two elements or the interaction relationship between the two elements; the fixing can be integrated fixing or detachable fixing through a fastener; can be directly fixed or fixed through an intermediate medium. The specific meaning of the above descriptive terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances, the context in which it is located, the consistency of the context, etc.

In the present invention, if a descriptive term containing an attached or connected meaning, e.g., a first feature "on" or "under" a second feature, is not to be interpreted in a limiting sense unless expressly stated or limited otherwise, e.g., the "on" or "under" can be either the direct contact of the first and second features or the indirect contact of the first and second features via an intermediary. The specific meaning of the above descriptive terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances, the context in which it is located, the consistency of the context, etc.

Further, a first feature "above," "over" and "on" a second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily for the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments, examples, and features of various embodiments, examples described in this specification may be combined and combined by persons skilled in the art without contradiction, and such combination or combination is intended to fall within the broad scope of the invention.

While embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art in light of the disclosure herein set forth.

Claims (10)

1. A transmission cone pulley, characterized in that: the conical ends of the first conical disc (1) and the second conical disc (2) are opposite, the conical ends are distributed in a staggered mode along the circumferential direction to form solid protruding portions (3) and notch portions (4), and the solid protruding portions (3) of the first conical disc (1) and the solid protruding portions (4) of the second conical disc (2) are mutually inserted into the notch portions (4) of each other, so that the first conical disc (1) and the second conical disc (2) can move relatively along the axial direction of each other.

2. The transmission cone pulley as in claim 1 wherein: the widths of the solid convex parts (3) and the gap parts (4) of the first conical disc (1) and the second conical disc (2) along the circumferential direction are the same.

3. The transmission cone pulley as in claim 1 wherein: the large end of the first conical disc (1) and the large end of the second conical disc (2) are respectively provided with a large end disc (5), the middle part of the large end disc (5) is provided with a transmission structure which is used for being matched with the shaft transmission of the large end disc (5), and the entity protruding part (3) is integrally connected with the end face of the large end disc (5).

4. A variator cone pulley as claimed in claim 3, wherein: the middle part of the big end disc (5) is also provided with a reinforcing cylinder (6), and the outer peripheral surface of the reinforcing cylinder (6) is contacted with the inner peripheral surface of the solid bulge part (3).

5. The transmission cone pulley as in claim 4 wherein: the large end disc (5) and the entity protruding part (3) of the first conical disc (1) are fixedly connected with the reinforcing cylinder (6) in the middle of the first conical disc, and the large end disc (5) and the entity protruding part (3) of the second conical disc (2) are in sliding fit with the reinforcing cylinder (6) in the middle of the second conical disc.

6. The transmission cone pulley as in claim 5 wherein: the large end disc (5) of the second conical disc (2) is in transmission fit with the reinforcing cylinder (6).

7. The transmission cone pulley as in claim 1 wherein: the outer peripheral sides of the solid protruding parts (3) of the first conical disc (1) and the second conical disc (2) are provided with rack structures (11), and the rack structures (11) are used for being matched with the flexible transmission element (9) for transmission; the rack structure (11) of the first conical disc (1) and the second conical disc (2) form a diagonal rack.

8. The utility model provides a transmission cone pulley group which characterized in that: the transmission cone pulley implementation based on any one of claims 1-7, comprising a driving shaft (7), a driven shaft (8) and a flexible transmission element (9), wherein the driving shaft (7) is provided with a driving cone pulley, the driven shaft (8) is provided with a driven cone pulley, the driving cone pulley and the driven cone pulley are both the transmission cone pulley, the middle parts of wheel grooves (10) of the driving cone pulley and the driven cone pulley are opposite, and the flexible transmission element (9) simultaneously bypasses the wheel grooves (10) of the driving cone pulley and the driven cone pulley.

9. The drive cone pulley set according to claim 8, wherein: the outer peripheral sides of the solid protruding parts (3) of the first conical disc (1) and the second conical disc (2) are matched with a flexible transmission element (9) through a rack structure (11); the rack structures (11) of the first conical disc (1) and the second conical disc (2) form a bevel rack of a cone pulley of the transmission; and the oblique racks of the driving cone pulley and the driven cone pulley are obliquely opposite;

the flexible transmission element (9) comprises a steel belt (12) and discs (13), the discs (13) are connected in series on the annular steel belt (12), and a meshing structure formed by the edges of the discs (13) is used for being matched with the rack structure (11) for transmission.

10. The drive cone pulley set according to claim 9, wherein: the steel belt (12) is formed by overlapping a plurality of thin sheets (14) from the inner ring side to the outer ring side of the steel belt, and the section of the steel belt (12) is elliptical; the part of the disc (13) positioned at the inner ring side of the steel belt (12) is in an elliptical arc shape.

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