CN108343726B

CN108343726B - V-belt pulley capable of adjusting alignment of V-belt and control method thereof

Info

Publication number: CN108343726B
Application number: CN201710060666.XA
Authority: CN
Inventors: K·斯瓦南当
Original assignee: Hyundai Motor Co; Kia Motors Corp
Priority date: 2017-01-25
Filing date: 2017-01-25
Publication date: 2022-05-13
Anticipated expiration: 2037-01-25
Also published as: CN108343726A

Abstract

The present invention relates to a V-pulley capable of adjusting alignment of a V-belt, and a control method thereof, the V-pulley including: a plurality of rib-shaped guides that protrude along a circumferential surface of the V-pulley; and an alignment corrector that moves the V-shaped transmission belt in a direction toward an inside of the V-pulley when the rib of the V-shaped transmission belt is located outside an outermost rib guide of the plurality of rib guides.

Description

V-belt pulley capable of adjusting alignment of V-belt and control method thereof

Technical Field

The present invention relates to a transmission wheel for transmitting power by using a power transmitting belt, and more particularly, to a V-pulley capable of adjusting the alignment of a V-belt, which moves the V-belt into the V-pulley and adjusts the alignment of the V-belt when a portion of the V-belt, which wraps around the V-pulley and rotates with the V-pulley, is separated from the V-pulley, and a control method thereof.

Background

Various devices for transmitting power are applied to various mechanical apparatuses including an engine of a vehicle. For example, a drive belt and drive wheel may be used to transmit power from a drive wheel to a driven drive wheel. In particular, a V-shaped transmission belt is widely used which can operate at high speed and has good power transmission performance by increasing a contact area between the transmission belt and the pulley by making a cross section of a contact portion between the transmission belt and the pulley have a trapezoidal shape.

Figure 1 shows a V-belt 120 and a V-pulley 110 wrapped around the V-belt 120.

A phenomenon in which the V-belt 120 is separated from the V-pulley 110 may occur during operation. For example, when the V-belt 120 is improperly assembled to the V-pulley 110 or for other reasons, a portion of the V-belt 120 may separate from the V-pulley 110 while rotating.

Fig. 2 shows a state in which a part of the rib 121 of the V-shaped transmission belt 120 is disposed outside the outermost rib guide 111 of the rib guides 111, wherein the rib 121 is formed to be interposed between the rib guides 111 in the V-shaped pulley 110. When the V-pulley 110 and the V-belt 120 rotate in a state where the V-belt 120 is deviated from the V-pulley 110 as described above, noise may be generated or insufficient power may be transmitted. Furthermore, if this phenomenon persists for a long period of time, the V-belt 120 may be damaged or broken.

In addition, when the V-belt 120 and the V-pulley 110 are mounted on the engine of the vehicle for driving the auxiliary machine and the V-belt 120 is rotated while being deviated, the engine may be overheated due to insufficient power transmitted through the V-belt 120.

The above is intended only to aid in understanding the background of the invention and is not intended to represent that the invention falls within the scope of the relevant art as known to those skilled in the art.

Disclosure of Invention

The present invention has been made to solve the above-mentioned problems occurring in the related art, and the present invention is directed to a V-pulley capable of adjusting the alignment of a V-belt by moving the V-belt to the inside of the V-pulley through an alignment corrector even if a rib of the V-belt wound around the V-pulley is separated from the V-pulley, and a control method thereof.

According to one aspect of the invention, a V-pulley comprises: a plurality of rib-shaped guides that protrude along a circumferential surface of the V-pulley; and an alignment corrector moving the V-belt in a direction toward an inside of the V-pulley when the rib of the V-belt is located outside an outermost rib guide of the plurality of rib guides, wherein the alignment corrector includes an alignment portion and a lever hinged to a side surface of the V-pulley, the lever for raising the alignment portion when the V-belt is deflected and the rib of the V-belt contacts the lever.

The aligning part is mounted in an aligning part mounting groove formed on the V-pulley to move up and down and has an aligning guide to move the V-belt toward the V-pulley.

The alignment guide in the alignment portion may be formed such that one rib guide of the plurality of rib guides is connected to an adjacent rib guide of the plurality of rib guides.

The alignment guide may be formed in plurality, and the plurality of alignment guides may be disposed in parallel with each other.

The number of the plurality of alignment guides may be one less than the number of the plurality of rib-shaped guides.

An elastic member may be installed in the aligning part mounting groove, and the elastic member may elastically support the aligning part in a direction of lowering the aligning part.

The middle portion of the lever may be hinged to a side surface of the V-pulley, one end portion of the lever may be connected to the alignment portion and the other end portion may be disposed adjacent to a circumferential surface of the V-pulley.

The circumferential surface of the other end of the lever may have a circular arc shape, and may contact the rib of the V-shaped transmission belt when the rib is located outside the V-shaped pulley.

The V-pulley may further include a cover having a groove that receives one end of the lever to limit rotation of the lever, the cover being engaged on an exterior of the V-pulley.

The alignment corrector may be provided at two positions spaced apart from each other in the circumferential direction of the V-pulley, and may be installed to move the V-belt in opposite directions to each other.

The levers may be respectively installed at opposite sides of the V-pulley, and the alignment guides of the alignment part may be formed to move the V-belt in opposite directions to each other.

According to another aspect of the present invention, a control method of a V-pulley capable of adjusting alignment of a V-belt includes the steps of: when the rib is located outside a rib-like guide formed in the circumferential direction of the V-pulley, the offset rib of the V-belt comes into contact with a lever rotatably mounted outside the V-pulley, thereby rotating the lever; raising an alignment portion in an alignment portion mounting groove formed on the V-pulley by rotation of the lever; adjusting an alignment state of the V-shaped transmission belt by moving the V-shaped transmission belt toward an inside of the V-shaped pulley by an alignment guide formed at an upper end of the alignment portion by raising the alignment portion; the aligning portion is lowered and the lever is returned to the original position when the aligning state of the V-belt is adjusted.

According to the V-pulley capable of adjusting the alignment of the V-belt and the control method thereof including the above-described configuration, even if the rib of the V-belt is located outside the V-pulley and thus deviated, the V-belt can be adjusted to be located inside the V-pulley by the alignment corrector.

Since the V-belt is regulated to the inside of the V-pulley by self-alignment, the above-described problems such as noise and damage of the V-belt due to deviation can be solved.

Drawings

The above and other objects, features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

fig. 1 is a perspective view showing a V-pulley and a V-belt according to the conventional art;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a perspective view showing a V-belt and a V-pulley capable of adjusting the alignment of the V-belt according to an exemplary embodiment of the present invention;

FIG. 4 is a partially enlarged perspective view of a V-pulley capable of adjusting the alignment of a V-belt according to the present exemplary embodiment;

fig. 5 is a partially enlarged perspective view showing an alignment part mounting groove in a V-pulley capable of adjusting the alignment of a V-belt according to the present exemplary embodiment;

fig. 6 is a plan view showing an alignment portion in a V-pulley capable of adjusting the alignment of a V-belt according to the present exemplary embodiment;

fig. 7 is a partially enlarged perspective view showing a state in which a rib-like guide of the V-pulley according to the present exemplary embodiment is connected to an alignment guide that is capable of adjusting an alignment portion in the V-pulley of the alignment of the V-belt;

fig. 8 is a perspective view showing a state where the deviated V-belt comes into contact with a lever in the V-pulley capable of adjusting the alignment of the V-belt according to the present exemplary embodiment;

FIG. 9 is a side view showing a state where a deflected V-belt comes into contact with a lever in a V-pulley capable of adjusting the alignment of the V-belt according to the present exemplary embodiment;

FIG. 10 is a cross-sectional view taken along line C-C of FIG. 8;

FIG. 11 is a perspective view showing a state where the offset V-belt operates a lever in a V-pulley capable of adjusting the alignment of the V-belt according to the present exemplary embodiment;

FIG. 12 is an enlarged partial perspective view of FIG. 10;

FIG. 13 is a cross-sectional view taken along line D-D of FIG. 11;

fig. 14 is a partially enlarged perspective view showing a state where the deviated V-belt according to the present exemplary embodiment is moved in the lateral direction in the V-pulley capable of adjusting the alignment of the V-belt;

fig. 15 is a perspective view showing a state in which adjustment of the alignment state of the V-shaped transmission belt is completed in the V-pulley capable of adjusting the alignment of the V-shaped transmission belt according to the present exemplary embodiment;

FIG. 16 is a cross-sectional view taken along line E-E of FIG. 15;

fig. 17 is a flowchart of a control method of a V-pulley capable of adjusting the alignment of a V-belt according to the present exemplary embodiment.

Detailed Description

Hereinafter, a V-pulley capable of adjusting the alignment of a V-belt according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

A V-pulley capable of adjusting the alignment of a V-belt according to an exemplary embodiment of the present invention may include: a plurality of rib-like guides 11 and an alignment corrector; the rib-like guide 11 protrudes along the circumferential surface of the V-pulley 10 so as to be interposed between a plurality of ribs 21 formed on the V-belt 20; when any of the plurality of ribs 21 is disposed to be deviated to the outside of the rib-like guides 11 formed at the outermost portions of the plurality of rib-like guides 11 of the V-pulley 10, the alignment corrector serves to move the V-belt 20 in the direction in which the plurality of rib-like guides 11 are formed.

The cross-sectional surfaces of the V-pulley 10 and the V-belt 20 that contact each other may have a trapezoidal shape to increase the area of contact with each other, so that the V-pulley 10 and the V-belt 20 can be applied at high speed and transmit large power.

A plurality of ribs 21 may be formed at the inner surface of the V-belt 20 and a plurality of rib guides 11 may be formed at the outer surface of the V-pulley 10 such that the plurality of ribs 21 are interposed between the plurality of rib guides 11.

The rib-like guides 11 may be formed in the circumferential direction on the circumferential surface of the V-pulley 10, and at predetermined intervals in the axial direction of the V-pulley 10.

The rib-like guides 11 may be interposed between the ribs, and the inclined surfaces of the rib-like guides 11 may contact the inclined surfaces of the ribs 21 so that power transmission may be performed between the V-pulley 10 and the V-belt 20.

An alignment corrector that moves the V-belt 20 in the axial direction to align when some of the ribs 21 of the ribs of the V-belt 20 are separated externally from the V-pulley 10 to be offset as shown in fig. 2 may be provided on the V-pulley 10.

As shown in fig. 4, an alignment corrector may be installed at one side of the V-pulley 10, and when some of the ribs 21 of the V-belt 20 are separated from the V-pulley 10, the alignment corrector may move the V-belt 20 in the axial direction of the V-pulley 10.

To mount the alignment corrector, an alignment portion mounting groove 12 may be formed on the V-pulley 10. As shown in fig. 5, the aligning-part mounting groove 12 may be formed at a predetermined depth from the circumferential surface of the V-pulley 10 toward the center of the aligning-part mounting groove 12. It is advantageous that the aligning member mounting grooves 12 are formed with an equal cross-sectional area along the length direction thereof so as to move the aligning member 13 up and down.

The aligning member 13 may be installed to move up and down in the aligning member mounting groove 12. An alignment guide 13a having a shape similar to that of the rib-like guide 11 may be formed at the upper end of the alignment portion 13. The alignment guide 13a may be inserted into the rib 21 of the V-shaped transmission belt 20.

As shown in fig. 6 and 7, the alignment guide 13a may be formed such that the rib-shaped guide 11 is connected to the adjacent rib-shaped guide 11. That is, the rib guides 11 are not connected in the circumferential direction and are cut off by the alignment part mounting grooves 12, so that the alignment guides 13a can connect these rib guides 11. In particular, the alignment guide 13a may connect the rib-like guide 11 with the most adjacent other rib-like guide 11. For example, the left-end-side rib guide 11 in the V-pulley 10 may be connected to the left-side second rib guide 11 by one alignment guide 13 a.

One alignment guide 13a may be connected to the nearest next rib guide 11, thereby moving the V-belt 20 in the lateral direction to adjust the alignment of the V-belt 20.

The aligning portion 13 may be located in the aligning portion mounting groove 12 when the V-pulley 10 and the V-belt 20 are normally aligned, but when the aligned state of the V-pulley 10 and the V-belt 20 becomes abnormal, the aligning portion 13 is lifted up from the aligning portion mounting groove 12 so that the heights of the aligning guide 13a and the rib-like guide 11 are equal.

The alignment guides 13a may be formed in plurality and in parallel with each other.

In addition, the alignment guides 13a may be formed in a number smaller by one than the number of the rib-shaped guides 11. For example, as shown in fig. 6, when there are four rib-like guides 11, there may be three alignment guides 13 a.

When the V-belt 20 is deflected, the lever 14 may raise the alignment portion 13.

The middle of the lever 14 may be hinged to the V-pulley 10 such that the lever 14 may rotate about the portion hinged to the V-pulley 10.

One end of the lever 14 may be connected to the aligning portion 13 so that the lever may raise the aligning portion 13 by rotating.

The other end of the lever 14 may be mounted to be disposed adjacent to the circumferential surface of the V-pulley 10. The other end of lever 14 may contact rib 21 of V-belt 20 when V-belt 20 is deflected. The other end of the lever 14 may have a circular arc shape. The other end of the lever 14 may have a radius of curvature substantially the same as that of the V-pulley 10, and may be adjacently disposed at the circumferential surface of the V-pulley 10 so that the V-belt 20 may immediately contact the other end of the lever 14 when the V-belt 20 is deviated.

The elastic member 15 may be installed in the aligning part-mounting groove 12.

The elastic member 15 may elastically support the aligning member 13 such that the aligning member 13 is inserted into the aligning member mounting groove 12.

The elastic member 15 may be provided in the form of a coil spring.

The cover 16 may be engaged to a side surface of the V-pulley 10. The cover 16 may cover the opening portion of the aligning part mounting groove 12 to prevent the aligning part 13 and the elastic member 15 from being separated.

Additionally, the cover 16 may have a recess for receiving one end of the lever 14. One end of the lever 14 may be located in the groove to limit the rotation angle of the lever 14. However, the cover 16 is not shown in the drawings except for fig. 3 and 7.

The operation of the V-pulley having the above-described configuration capable of adjusting the alignment of the V-belt will be described below.

Fig. 3 shows the deviated state, that is, the V-belt 20 rotates while some of the ribs 21 of the V-belt 20 are separated to the outside of the V-pulley 10. At this time, the V-belt 20 is separated from the alignment corrector, and a sectional view along line B-B of FIG. 3 is similar to that shown in FIG. 2.

Thereafter, if the V-pulley 10 rotates, as shown in fig. 8 to 10, the V-belt 20 comes into contact with the other end of the lever 14. The rib 21 located at the outermost portion of the V-belt 20 contacts the other end of the lever 14 through the V-pulley 10.

As shown in fig. 11 to 14, if the rotation of the V-shaped belt 20 is continued while the rib 21 contacts the lever 14, the lever 14 rotates to raise the alignment portion 13. If the V-pulley 10 is rotated while the rib 21 contacts the lever 14, the rib 21 presses down on the other end of the lever 14 to turn the lever 14 around the portion hinged to the V-pulley 10. Since the other end of the lever 14 rotates to be deflected (turn) toward the center of the V-pulley 10, one end of the lever 14 rotates to be deflected toward the circumferential surface of the V-pulley 10. The aligning portion 13 received in the aligning portion mounting groove 12 is lifted by rotation of one end of the lever 14 to be moved toward the circumferential surface of the V-pulley 10.

If the aligning portion 13 is raised, as shown in fig. 14, the V-belt 20 can move in the lateral direction because the V-belt 20 moves toward the circumferential surface of the V-pulley 10 along the aligning guide 13 a. Since the V-belt 20 is moved in the lateral direction, the alignment state of the V-belt 20 can be adjusted to form an appropriate alignment state.

If the V-pulley 10 is continuously rotated while the alignment state of the V-belt 20 is appropriately adjusted with respect to the V-pulley 10 as described above, the rib 21 is continuously rotated without coming into contact with the alignment corrector. At this time, as shown in fig. 16, the state of the cross section is such that the ribs 21 of the V-belt 20 are not separated toward the outside of the V-pulley 10 and are thus normally aligned.

The alignment correctors may be installed at two different positions of the V-pulley 10, respectively, and each of the alignment correctors may be installed to adjust the alignment position of the V-belt 20 in different directions from each other. That is, the aligning-part mounting grooves 12 may be formed at two different positions spaced apart from each other in the circumferential direction of the V-pulley 10, the aligning parts 13 may be mounted in the aligning-part mounting grooves 12 in different directions from each other with respect to the aligning guide 13a, and the levers 14 may be mounted on different surfaces of the V-pulley 10, respectively.

Therefore, if two alignment correctors are mounted on the V-pulley 10, respectively, the alignment state of the V-belt 20 can be adjusted in both directions of the V-pulley 10.

Fig. 17 shows a control method of a V-pulley capable of adjusting the alignment of a V-belt according to another exemplary embodiment of the present invention.

The control method of a V-pulley capable of adjusting the alignment of a V-belt according to the present exemplary embodiment may include: a lever operation step S110, an alignment part raising step S120, an alignment state adjusting step S130, and a lever returning step S140; a lever operation step S110 of bringing the offset rib 21 of the V-belt 20 into contact with the lever 14 mounted outside the V-pulley 10 and rotating the lever 14; in the aligning-portion raising step S120, the aligning portion 13 in the aligning-portion mounting groove 12 formed on the V-pulley 10 is raised by the rotation of the lever 14; in the alignment state adjusting step S130, the alignment state of the V-belt 20 is adjusted by raising the alignment portion 13 such that the alignment guide 13a formed at the upper end of the alignment portion 13 moves the V-belt 20 toward the inside of the V-pulley 10; in the lever returning step S140, the aligning portion 13 is lowered and the lever 14 is returned to the original position when the aligning state of the V-belt 20 is adjusted.

A plurality of ribs 21 are formed on the V-belt 20 and a plurality of rib guides 11 are formed on the V-pulley 10 so as to be interposed between the ribs 21. If the ribs 21 are rotated in an offset state, i.e., the outermost ones of the ribs 21 are located outside the outermost ones of the rib guides 11, noise may occur or the V-shaped transmission belt 20 may be damaged. However, as described above, since the alignment corrector is provided on the V pulley 10, the alignment state of the V-belt 20 can be adjusted.

The lever operation step S110 is a step of: when the V-belt 20 is relatively rotated in a deviated state with respect to the V-pulley 10, the deviated rib 21 of the V-belt 20 comes into contact with the lever 14 rotatably mounted on the V-pulley 10 to rotate the lever 14. If the V-belt 20 is rotated in the deviated state, the deviated rib 21 (i.e., the rib 21 located outside the rib guide 11) is brought into contact with the other end of the lever 14 rotatably mounted on the V-pulley 10. Thereafter, if the V-belt 20 is continuously rotated, the offset rib 21 presses the other end of the lever 14 so that the lever 14 turns around the portion hinged to the V-pulley 10.

The aligning portion raising step S120 moves the aligning portion 13 mounted on the V pulley 10 up and down by the rotation of the lever 14. Since the aligning portion 13 is installed to move up and down in the aligning portion mounting groove 12 formed in the V-pulley 10 and to contact the lever 14, the aligning portion 13 is raised if the lever 14 is rotated.

The alignment state adjusting step S130 is a step of adjusting the alignment state of the deviated V-belt 20 by the alignment guide 13a formed on the raised alignment portion 13. An alignment guide 13a may be formed at an upper end of the alignment part 13 so that the rib-shaped guide 11 separated by the alignment part mounting groove 12 may be connected with the next adjacent rib-shaped guide 11. Therefore, if the aligning section 13 is raised, the V-belt 20 moves in the lateral direction along the aligning guide 13a so that the aligning state of the V-belt 20 can be adjusted.

When the alignment state of the V-belt 20 is adjusted in the lever returning step S140, the aligning part 13 and the lever 14 may be respectively returned to their original positions since the power of pressing the lever 14 downward is lost.

Although the exemplary embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and deletions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

1. A V-pulley comprising:

a plurality of rib-shaped guides that protrude along a circumferential surface of the V-pulley; and

an alignment corrector that moves the V-shaped transmission belt in a direction toward an inside of the V-shaped pulley when a rib of the V-shaped transmission belt is located outside an outermost rib guide of the plurality of rib guides,

wherein the alignment corrector comprises an alignment portion and a lever hinged to a side surface of the V-shaped pulley, the lever for raising the alignment portion when the V-shaped belt is deflected and a rib of the V-shaped belt contacts the lever.

2. The V-pulley of claim 1 wherein the alignment portion is mounted in an alignment portion mounting groove formed on the V-pulley to move up and down, the alignment portion having an alignment guide to move the V-belt toward the V-pulley.

3. The V-pulley according to claim 2 wherein the alignment guide in the alignment portion is formed such that one rib guide of the plurality of rib guides is connected to an adjacent rib guide of the plurality of rib guides.

4. The V-pulley according to claim 3 wherein the alignment guide is formed in plurality and the plurality of alignment guides are disposed parallel to each other.

5. The V-pulley of claim 4 wherein the number of the plurality of alignment guides is one less than the number of the plurality of rib-like guides.

6. The V-pulley according to claim 2, wherein an elastic member that elastically supports the aligning portion in a direction to lower the aligning portion is installed in the aligning portion installation groove.

7. The V-pulley of claim 2 wherein a middle portion of the lever is hinged to the side surface of the V-pulley, one end portion of the lever being connected to the alignment portion and the other end portion being disposed adjacent to the circumferential surface of the V-pulley.

8. The V-pulley of claim 7 wherein the circumferential surface of the other end of the lever has a circular arc shape that contacts the rib of the V-belt when the rib is outside the V-pulley.

9. The V-pulley of claim 2 further comprising a cover having a groove that receives one end of the lever to limit rotation of the lever, the cover engaging the exterior of the V-pulley.

10. The V-pulley according to claim 2, wherein the alignment corrector is provided at two positions spaced apart from each other in a circumferential direction of the V-pulley, and the alignment corrector is mounted to move the V-belt in opposite directions to each other.

11. The V-pulley of claim 10 wherein the levers are mounted on opposite sides of the V-pulley, respectively, and the alignment guides of the alignment portions are formed to move the V-belt in opposite directions to one another.

12. A method of controlling a V-pulley capable of adjusting the alignment of a V-belt, comprising the steps of:

when the rib is located outside a rib-like guide formed in the circumferential direction of the V-pulley, the offset rib of the V-belt comes into contact with a lever rotatably mounted outside the V-pulley, thereby turning the lever;

raising an alignment portion in an alignment portion mounting groove formed on the V-pulley by rotation of the lever;

adjusting the alignment state of the V-belt by moving the V-belt toward the inside of the V-pulley by an alignment guide formed at an upper end of the alignment portion by raising the alignment portion;

lowering the alignment portion and returning the lever to an original position when adjusting the alignment of the V-belt.