CN112555369A

CN112555369A - Transmission chain, driving module and continuously variable transmission

Info

Publication number: CN112555369A
Application number: CN202011388656.7A
Authority: CN
Inventors: 蒋官业; 周茂臣; 王鸿雁; 李富荣; 黄立峰; 钟立军; 吴佳龙
Original assignee: China Construction Science and Industry Corp Ltd
Current assignee: China Construction Science and Industry Corp Ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-03-26

Abstract

The invention discloses a transmission chain, a driving module and a continuously variable transmission, wherein the transmission chain comprises a transmission part, the transmission part comprises a main body part and elastic parts, the two opposite sides of the main body part are respectively provided with the elastic parts, and the elastic parts at the two sides are bent towards the same end of the main body part relative to the main body part; wherein, a plurality of driving medium connect gradually, and can rotate relatively between the adjacent driving medium. In the transmission chain provided by the embodiment of the invention, the elastic parts at two sides are bent towards the same end of the main body part relative to the main body part, so that when an external driving member is contacted with the elastic parts, the unidirectional motion of the transmission chain can be realized, and the unidirectional transmission function is realized.

Description

Transmission chain, driving module and continuously variable transmission

Technical Field

The invention relates to the technical field of transmission, in particular to a transmission chain, a driving module and a continuously variable transmission.

Background

In industrial production, one-way transmission of a chain transmission structure is sometimes required, and in the related art, an overrunning clutch is usually adopted to achieve the above functions, for example, a driving shaft of a motor is connected with a driving wheel through the overrunning clutch, however, the above manner needs to control connection and disconnection of the overrunning clutch, and is complex in structure and inconvenient to operate.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a transmission chain which can realize a one-way transmission function.

The invention also provides a driving module and a continuously variable transmission comprising the transmission chain.

A drive chain according to an embodiment of the first aspect of the invention comprises:

the transmission part comprises a main body part and elastic parts, the elastic parts are respectively arranged on two opposite sides of the main body part, and the elastic parts on the two sides are bent towards the same end of the main body part relative to the main body part;

wherein, it is a plurality of the driving medium connects gradually, and is adjacent can rotate relatively between the driving medium.

The transmission chain provided by the embodiment of the invention has at least the following beneficial effects:

because the elastic parts on both sides are bent towards the same end of the main body part relative to the main body part, when an external driving component is contacted with the elastic parts, the unidirectional motion of the transmission chain can be realized, and the unidirectional transmission function is realized.

According to some embodiments of the invention, the drive member further comprises a connecting member capable of being elastically bent, and each of the driving members is connected to the connecting member in turn.

According to some embodiments of the present invention, the elastic part comprises two connecting pieces, each of the driving pieces is located between the two connecting pieces, one side of each of the connecting pieces facing the driving piece is provided with a plurality of grooves, the plurality of grooves are distributed at intervals along an extending direction of the connecting piece, each of the driving pieces is respectively clamped in the corresponding groove of the two connecting pieces, and a distal end of the elastic part exceeds the connecting piece on the corresponding side.

According to some embodiments of the invention, the main body portion is provided with two elastic portions on the same side, a gap is formed between the two elastic portions, and the connecting member is located in the gap on the corresponding side.

According to some embodiments of the invention, the driving member is engaged in the groove through the main body portion.

According to some embodiments of the invention, the connecting member is an annular elastic sheet.

According to some embodiments of the invention, the distal end of the resilient portion is a rounded end.

According to a second aspect of the invention, a driving module comprises:

the transmission chain;

the transmission wheels are provided with annular grooves arranged along the circumferential direction, the transmission chains are wound on the transmission wheels, and the lateral groove walls of the annular grooves can be abutted against the elastic parts so as to drive the transmission chains to move in a single direction through the elastic parts;

and the power device is used for driving at least one driving wheel to rotate.

The driving module according to the embodiment of the invention at least has the following beneficial effects:

the driving module provided by the embodiment of the invention can realize one-way transmission.

A continuously variable transmission according to an embodiment of a third aspect of the invention includes:

the driving module comprises two driving wheels, wherein one driving wheel is connected with the power device to serve as a driving wheel, and the other driving wheel serves as a driven wheel;

the first adjusting device is used for adjusting the rotating radius of the transmission chain on the driving wheel;

the second adjusting device is used for adjusting the rotating and winding radius of the transmission chain on the driven wheel;

the change trend of the rotating radius of the transmission chain on the driving wheel is opposite to that of the rotating radius on the driven wheel.

According to some embodiments of the invention, the first and second adjusting devices each comprise a pair of adjusting rollers, the transmission chain being interposed between the pair of adjusting rollers.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further described with reference to the following figures and examples, in which:

FIG. 1 is a schematic perspective view of a drive chain according to an embodiment of the present invention;

FIG. 2 is an exploded schematic view of the drive train of FIG. 1;

FIG. 3 is a top plan view of the drive chain of FIG. 1;

FIG. 4 is a side view of the drive chain of FIG. 1;

FIG. 5 is a schematic perspective view of a transmission member of the drive chain of FIG. 1;

FIG. 6 is a top view of the transmission member of FIG. 5;

FIG. 7 is a schematic perspective view of a driving module according to an embodiment of the present invention, showing a transmission chain and a driving wheel;

FIG. 8 is a top view of the drive module of FIG. 7;

FIG. 9 is a schematic illustration of an embodiment of the continuously variable transmission of the present invention in an initial state;

fig. 10 is a schematic view of the continuously variable transmission of fig. 9 in a shifting state.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," 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 terms used above do not necessarily refer to 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.

Referring to fig. 1 to 4, a transmission chain 100 according to an embodiment of the present invention includes a plurality of transmission members 110, the plurality of transmission members 110 are sequentially connected to form a chain structure, and adjacent transmission members 110 rotate relative to each other, so that the transmission chain 100 can be wound around a circular member such as a transmission wheel.

Referring to fig. 5 and 6, the transmission member 110 includes a main body 111 and an elastic portion 112, the main body 111 has a rectangular structure, the elastic portion 112 extends from two opposite sides (for example, left and right sides in the figure), and the elastic portions 112 on the two sides may be symmetrically disposed on two sides of the main body 111.

The two side elastic portions 112 are bent toward the same end of the main body portion 111 with respect to the main body portion 111, and taking fig. 6 as an example, the two side elastic portions 112 of the main body portion 111 are bent toward the front end of the main body portion 111, and the bending referred to in this application may be that the whole elastic portion 112 is bent with respect to the main body portion 111, that is, the bending region is located at the connection position of the elastic portion 112 and the main body portion 111, or that a part of the structure (for example, near the distal end) of the elastic portion 112 is bent, that is, the bending region is located on the elastic portion 112. The elastic portion 112 and the main body portion 111 may be bent in a zigzag shape as shown in the drawing, or may be bent in an arc shape.

In the transmission chain of the embodiment, since the elastic portions 112 at both sides are bent toward the same end of the main body portion 111 with respect to the main body portion 111, when an external driving member contacts the elastic portions 112, a unidirectional motion of the transmission chain can be realized, thereby realizing a unidirectional transmission function.

Referring to fig. 1 to 4, the driving chain further includes a connecting member 120, and each driving member 110 is connected to the connecting member 120 in sequence. The connecting members 120 are capable of being elastically bent to thereby enable relative rotation between the adjacent driving members 110. The connecting member 120 may be an annular elastic sheet made of metal, the elastic sheet has sufficient strength to serve as a support member for mounting the driving member 110, and the elastic sheet has good elasticity, and can be bent to realize relative rotation between adjacent driving members 110 and can be quickly restored.

Referring to fig. 1 to 4, the driving chain includes two connecting members 120, the two connecting members 120 are symmetrically disposed and spaced apart from each other, and each driving member 110 is located between the two connecting members 120. The connecting member 120 has a plurality of grooves 121 on a side facing the transmission member 110, for example, the right side of the left connecting member 120 has a groove 121, the left side of the right connecting member 120 has a groove 121, the plurality of grooves 121 are distributed at intervals along an extending direction (e.g., a front-back direction in fig. 2) of the connecting member 120, the number and the positions of the grooves 121 on the two connecting members 120 are in one-to-one correspondence, that is, a pair of corresponding grooves 121 on the two connecting members 120 are used for installing one transmission member 110, and each transmission member 110 is respectively clamped in the corresponding grooves 121 of the two connecting members 120, thereby implementing the installation of the transmission member 110. When the transmission element 110 is mounted on two connecting elements 120, referring to fig. 3, the distal end 1121 of the elastic portion 112 extends beyond the corresponding connecting element 120, so as to prevent the connecting element 120 from obstructing the contact between the elastic portion 112 and the external member.

The width of the grooves 121 and the distance between the grooves 121 can be kept constant, so that the transmission members 110 can be installed at equal intervals, and the connecting member 120 can be bent at a position between two transmission members 110, thereby realizing the rotation between the adjacent transmission members 110.

The two connecting members 120 may be connected and fixed by using a known connection structure, so as to limit the displacement of the transmission member 110 in the front-rear and left-right directions.

Referring to fig. 1 to 4, in the above-mentioned transmission chain, two elastic portions 112 are disposed on the same side of the main body portion 111, taking fig. 2 and 4 as an example, two elastic portions 112 are disposed on both the left side and the right side of the main body portion 111, the shape, bending direction, bending angle, and the like of the two elastic portions 112 located on the same side are the same, a gap 113 is formed between the two elastic portions 112 located on the same side, and the connecting member 120 is located in the gap 113 on the corresponding side, so that the displacement of the transmission member 110 along the up-down direction can be limited, the connection between the connecting member 120 and the transmission member 110 is more stable, and meanwhile, the hiding of the connecting member 120 can be realized, so that the distal end 1121 of.

In the above-mentioned transmission chain, the transmission element 110 is clamped in the groove 121 through the main body 111, and taking fig. 4 as an example, the left side of the main body 111 is clamped in the groove 121 of the left side connecting piece 120, and the right side is clamped in the groove 121 of the right side connecting piece 120.

Referring to fig. 3, in the above-mentioned transmission chain, the distal end 1121 of the elastic portion 112 is an arc end, so that when the elastic portion 112 contacts with an external member, abrasion to the external member can be reduced, and friction when the external member and the elastic portion 112 move relatively can be reduced.

Referring to fig. 7 and 8, the embodiment of the present invention further discloses a driving module, which includes the above-mentioned transmission chain 100, at least two transmission wheels 200 and a power device. The driving wheel 200 has a circumferential groove 210, and the driving chain 100 is wound around the driving wheel 200 and is located in the circumferential groove 210 of the driving wheel 200. Taking a pair of driving wheels 200 as an example, the driving chains 100 are respectively wound on two driving wheels 200, one of which is used as a driving wheel, and the other is used as a driven wheel, and the power device is used for driving the driving wheel to rotate.

Referring to fig. 8, after the transmission chain 100 enters the annular groove 210, the lateral groove wall 211 of the annular groove 210 can abut against the elastic portion 112, so that the elastic portion 112 has a certain pre-tightening force, if the transmission wheel 200 rotates, so that the lateral groove wall 211 moves forward relative to the elastic portion 112, the elastic portion 112 bends forward, the moving direction of the lateral groove wall 211 and the compression direction between the elastic portions 112 are kept at the same direction, so that the friction between the elastic portion 112 and the lateral groove wall 211 is small, the transmission wheel 200 slips relative to the transmission chain 100, and the transmission chain 100 is kept still. If the driving wheel 200 rotates reversely, when the lateral groove wall 211 moves towards the back of the figure relative to the elastic part 112, the lateral groove wall 211 has a tendency of driving the elastic part 112 to expand, and the expansion of the elastic part 112 will increase the pressure between the elastic part 112 and the lateral groove wall 211, thereby increasing the friction force between the two, and finally the driving wheel 200 drives the driving chain 100 to move through the elastic part 112, so that the driving module can realize the one-way transmission function.

Referring to fig. 9 and 10, the present invention further discloses a continuously variable transmission, including the above-mentioned driving module, the first adjusting device 300 and the second adjusting device 400, wherein the driving module includes two driving wheels, one driving wheel 200 (for example, the driving wheel on the left side of the figure) is connected to a power device to serve as a driving wheel, the other driving wheel 200 (for example, the driving wheel on the right side of the figure) serves as a driven wheel, a driving chain is wound around the driving wheel and the driven wheel, and when the continuously variable transmission is in the state shown in fig. 9, a gap is formed between the driving chain and the bottom groove wall 212 of the circular groove 210, that is, the driving chain is connected to the driving wheel 200 only by the friction force with the lateral groove wall 211, and the friction force between the driving part 120 and the lateral groove wall 211 is relatively large, so that the driving chain.

The first adjusting device 300 is used for adjusting the turning radius of the transmission chain on the driving wheel, the second adjusting device 400 is used for adjusting the turning radius of the transmission chain on the driven wheel, and the variation trend of the turning radius of the transmission chain on the driving wheel is opposite to that of the turning radius on the driven wheel. It can be understood that when the rotating radius of the transmission chain on the driving wheel is smaller, the rotating radius of the transmission chain on the driven wheel is correspondingly larger, and the rotating speed of the driven wheel is reduced. Because the change of the rotating radius of the transmission chain is continuous, the stepless speed change function can be realized.

The first adjusting device 300 and the second adjusting device 400 may have the same structure, and taking the first adjusting device 300 as an example in the drawing, the first adjusting device 300 includes a pair of adjusting rollers through which a transmission chain passes, and when the pair of adjusting rollers move in the up-down direction, the turning radius of the transmission chain on the driving wheel can be adjusted. First adjusting device 300 is close to the action wheel setting, and is located the position that the driving chain got into annular 210, and second adjusting device 400 is close to from the driving wheel setting, and is located the position that the driving chain withdrawed from annular 210, so, first adjusting device 300 and second adjusting device 400 only need follow the less distance of upper and lower direction removal, can realize changeing around radial regulation.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

Claims

1. Drive chain, its characterized in that includes:

2. The drive chain of claim 1, further comprising a link member capable of resilient flexing, each of the drive members being connected in turn to the link member.

3. The transmission chain according to claim 2, comprising two of the connecting members, wherein each of the transmission members is located between the two of the connecting members, one side of the connecting member facing the transmission member has a plurality of grooves spaced apart from each other along the extending direction of the connecting member, each of the transmission members is engaged in the corresponding groove of the two of the connecting members, and the distal end of the elastic portion extends beyond the corresponding connecting member.

4. The drive chain of claim 3, wherein the main body portion is provided with two of the elastic portions on the same side thereof, a gap is provided between the two elastic portions, and the connecting member is located in the gap on the corresponding side.

5. The drive chain of claim 3, wherein the drive element is captured in the recess by the body portion.

6. The drive chain of claim 2, wherein the connecting member is an annular elastomeric sheet.

7. The drive chain of claim 1, wherein the distal end of the resilient portion is a radiused end.

8. Drive module, its characterized in that includes:

the drive chain of any one of claims 1 to 7;

and the power device is used for driving at least one driving wheel to rotate.

9. Continuously variable transmission, characterized by comprising:

a drive module according to claim 8, comprising two of said drive wheels, one of said drive wheels being connected to said power unit to act as a drive wheel and the other of said drive wheels acting as a driven wheel;

10. The continuously variable transmission according to claim 9, wherein the first adjusting device and the second adjusting device each include a pair of adjusting rollers, and the transmission chain is inserted between the pair of adjusting rollers.