CN110546404A - One-way clutch for belt pulley, belt pulley comprising one-way clutch for belt pulley and flat belt transmission system comprising belt pulley - Google Patents
One-way clutch for belt pulley, belt pulley comprising one-way clutch for belt pulley and flat belt transmission system comprising belt pulley Download PDFInfo
- Publication number
- CN110546404A CN110546404A CN201880026582.7A CN201880026582A CN110546404A CN 110546404 A CN110546404 A CN 110546404A CN 201880026582 A CN201880026582 A CN 201880026582A CN 110546404 A CN110546404 A CN 110546404A
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- China
- Prior art keywords
- pulley
- reverse rotation
- rotation preventing
- way clutch
- flat belt
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
- F16D41/064—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls
- F16D41/066—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/36—Pulleys
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
- F16H7/12—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Pulleys (AREA)
Abstract
A pulley one-way clutch (10) is attached to the side surface of the meandering control pulley (5). Specifically, a guide plate (11) is provided on a one-way clutch (10) for a pulley, and the guide plate (11) is attached to the side surface of a meandering control pulley (5). The guide plate (11) is provided with a reverse rotation preventing member (13) and a guide groove (12), the reverse rotation preventing member (13) prevents the meandering control pulley (5) from rotating in the reverse direction with respect to the pulley shaft (7), the pulley shaft (7) supports the meandering control pulley (5) so as to be rotatable, the guide groove (12) accommodates the reverse rotation preventing member (13), and the guide groove (12) guides the reverse rotation preventing member (13) to move between a reverse rotation preventing position where the meandering control pulley (5) is prevented from rotating in the reverse direction and a normal rotation permitting position where the meandering control pulley (5) is permitted to rotate in the normal direction.
Description
Technical Field
The present invention relates to a one-way clutch for a pulley that is attached to a pulley and allows the pulley to rotate only in a forward direction (hereinafter referred to as forward rotation), a pulley including the one-way clutch for a pulley, and a flat belt transmission system including the pulley.
Background
conventionally, in a transmission system using a flat belt, the flat belt may meander or run with a deviation to one side of a pulley while running. This is because flat belts are more sensitive to the following situations and the like than other drive belts: the pulley shaft is deviated from the normal position; changes in axle load cause the pulley axle to bend; the pulley rocks, swings, etc. In order to prevent such meandering and offset running, a flat belt meandering control device for preventing meandering of a flat belt is known (for example, see patent document 1).
Patent document 1: japanese laid-open patent publication No. 2005-121205
Disclosure of Invention
Technical problems to be solved by the invention
in a flat belt drive system having a fan such as a blower, the fan may be rotated in a reverse direction (hereinafter, referred to as reverse rotation) by wind or the like. In this case, as described above, the flat belt is likely to be deviated from the pulley, and when the flat belt is reversed, the flat belt moves in a meandering direction, and the flat belt comes into contact with the flange of the pulley, thereby damaging the side surface of the belt. Moreover, in some cases, the flat belt may fall off the pulley over the flange.
Conventionally, a transmission system in which a one-way clutch is built in a pulley together with a bearing and the like is widely known, and particularly, in a transmission system having rotational rattling, the one-way clutch is often enlarged to solve the problem of the rotational rattling, and the mounting is not easy, which is also a problem.
for example, like the conventional flat belt transmission system 101 shown in fig. 7A and 7B, an external one-way clutch 105 is attached to a side surface of the driven pulley 102, and the external one-way clutch 105 is fixed to a fixing portion 108 with a ring screw 107A by a wire 107. In fig. 7A to 8B, the arrow F indicates a forward direction, and the arrow R indicates a reverse direction. In the normal rotation, as shown in fig. 8A, the roller 105a does not interfere with the rotation of the driven pulley 102. On the other hand, when the rotation is reversed, as shown in fig. 8B, the roller 105a bites into the wedge portion 105B, and the outer one-way clutch 105 rotates integrally with the rotary shaft 102a of the driven pulley 102. Thus, as shown in fig. 7B, the wire 107 is tightened to prevent the flat belt 106 from moving in the reverse direction R. In such a configuration, a space for fastening the wire 107 is required, the number of components increases, and the mass also increases. Also, a certain degree of strength is required for a portion to which the eye screw 107a is fixed.
In the normal rotation shown in fig. 7A and 8A, the wire 107 is also slightly pulled in the rotational direction by the sliding resistance of the outer one-way clutch 105. The roller 105a of the external one-way clutch 105 is continuously pressed by the spring 105c and comes into contact with the internal member, thereby generating a sliding resistance. This is also the cause of transmission losses.
On the other hand, as shown in fig. 7B and 8B, when the rotation is reversed, the outer one-way clutch 105 is operated, the wire 107 is tightened, and the rotation of the driven pulley 102 is stopped. However, when the forward and reverse rotation is changed, the wire 107 is changed between slack and tension, so that the wire 107 is jumped and the surrounding equipment is damaged. At the moment when the reverse rotation is stopped, the wire 107 receives a collision load due to the moment of inertia of the rotation of the driven pulley 102. This also shortens the life of the wire 107, and also generates a collision sound to cause noise, which is a disadvantage.
In order to solve the above problem, a method of tensioning the wire 107 without slackening can also be conceived. However, as can be seen from the calculation formula of the sag f, where f is wL2/8H (H: horizontal tension kgf, w: mass per unit length kg/m, f: sag m, L: horizontal distance m), when f is 0, the horizontal tension H becomes infinite, and therefore, it is impossible to prevent the wire 107 from sagging in this state. Therefore, the disadvantage of the external one-way clutch 105 cannot be avoided.
The present invention has been made to solve the above problems, and an object of the present invention is to: the reverse rotation of the pulley can be reliably prevented by a simple structure.
Technical solution for solving technical problem
In order to achieve the above object, according to the present invention, a one-way clutch for a pulley is attached to a side surface of the pulley, so that reverse rotation of the pulley can be prevented.
Specifically, the one-way clutch for a pulley of the first aspect of the present invention is attached to a side surface of the pulley and allows the pulley to rotate only in the forward direction.
according to the above configuration, the pulley can be prevented from rotating in the reverse direction only by being attached to the side surface of the pulley. Since the present invention can be mounted only on the side surface of the pulley, the present invention is easy to mount, has a simple structure, and can be mounted on an existing pulley in some cases. In addition, it is possible to: the space is saved, the number of parts is less, and the weight is light.
The invention of the second aspect is based on the invention of the first aspect,
The one-way clutch for the belt pulley comprises a guide plate, a reverse rotation preventing component and a guide groove,
The guide plate is installed on the side surface of the belt wheel,
The reverse rotation preventing member is provided on the guide plate and prevents the pulley from being reversely rotated with respect to a pulley shaft that supports the pulley to be rotatable,
The guide groove accommodates the reverse rotation preventing member, and guides the reverse rotation preventing member to move between a reverse rotation preventing position where the reverse rotation of the pulley is prevented and a normal rotation permitting position where the normal rotation of the pulley is permitted.
according to the above configuration, the reverse rotation preventing member moves between the reverse rotation preventing position and the normal rotation permitting position in the guide groove, and prevents the pulley from rotating in the reverse rotation preventing position and permits the pulley to rotate in the normal rotation permitting position. Since the guide plate and the reverse rotation preventing member may be attached to the pulley, the guide plate and the reverse rotation preventing member are easily attached to the pulley, and the guide plate and the reverse rotation preventing member may be attached to the existing pulley.
The invention of the third aspect is based on the invention of the second aspect,
In the guide groove, the normal rotation permitting position is disposed in a direction away from the pulley shaft, and the reverse rotation preventing position is disposed in a direction close to the pulley shaft,
The reverse rotation preventing member is configured to: in the reverse rotation preventing position, the reverse rotation preventing member is engaged between the outer peripheral surface of the pulley shaft and the inner peripheral surface of the guide groove to prevent the pulley from rotating reversely. According to the above configuration, the reverse rotation preventing member bites between the outer periphery of the pulley shaft and the inner surface of the guide groove to function as a wedge, thereby reliably preventing the pulley from reversing.
The invention of the fourth aspect is based on the invention of the third aspect,
The reverse rotation preventing member is configured to: when the pulley is rotating in the normal direction, the reverse rotation preventing member moves toward the normal rotation permitting position due to the rotation of the pulley, and when the pulley is about to rotate in the reverse direction, the reverse rotation preventing member prevents the pulley from rotating in the reverse rotation preventing position.
according to the above configuration, when the pulley is rotated in the normal direction, the reverse rotation preventing member moves to the normal rotation permitting position which is not the reverse rotation preventing position, and the pulley is rotated. When the pulley is to be rotated in the non-rotatable direction, the reverse rotation preventing member stays at the reverse rotation preventing position to reliably prevent the pulley from being rotated.
The invention of the fifth aspect is based on the invention of any one of the second to fourth aspects,
The reverse rotation preventing member includes a magnetic body,
The guide plate and the guide groove are not magnetic bodies,
A magnet that attracts the reverse rotation preventing member toward the reverse rotation preventing position is provided at an end of the guide groove on the reverse rotation preventing position side.
According to the above configuration, the magnetic inversion preventing member is reliably attracted to the magnet without being affected by the guide plate and the guide groove of the nonmagnetic material. Because of the attraction of the magnet, it is not necessary to move the reverse rotation preventing member to the reverse rotation preventing position with a spring or the like that easily generates vibration.
The invention of the sixth aspect is based on the invention of the fifth aspect,
the reverse rotation preventing member is in a shape of a circular plate, and the reverse rotation preventing member is configured to: the guide groove is rotatable and movable between the normal rotation permitting position and the reverse rotation preventing position, and the pulley shaft is brought into non-contact with the pulley shaft by a centrifugal force during normal rotation.
According to the above configuration, the reverse rotation preventing member itself is moved to a position not in contact with the pulley shaft by centrifugal force while rotating at a position other than the reverse rotation preventing position and is attached to the guide groove, so that the pulley rotation is not hindered. Further, since the reverse rotation preventing member does not contact the pulley shaft at the time of normal rotation, grease or the like is not required.
The invention of the seventh aspect is based on the invention of any one of the second to sixth aspects,
The guide groove is covered by a shield plate, and the pulley is formed as a unit by a one-way clutch.
According to the above configuration, the guide groove is covered with the shade, and the one-way clutch for the pulley is configured as a unit, so that the mounting is extremely easy, and the mounting to the conventional pulley is also easy.
The pulley of the invention of the eighth aspect includes the one-way clutch for a pulley of the invention of any one of the first to seventh aspects.
According to the above configuration, a pulley that can reliably rotate only in one direction with a simple configuration can be obtained.
the inventive flat belt drive system of the ninth aspect comprises the inventive pulley of the eighth aspect, the pulley shaft and the flat belt,
The flat belt is hung on the belt wheel.
according to the above configuration, the flat belt can be prevented from moving in the reverse direction, and therefore, the flat belt can be reliably prevented from falling off due to reverse rotation.
The invention of the tenth aspect is based on the invention of the ninth aspect,
the pulley is a meandering control pulley that controls meandering of the flat belt,
the meandering control pulley is configured to prevent the flat belt from moving in a reverse direction.
According to the above configuration, the meandering control pulley can reliably prevent the flat belt from meandering in the forward direction, and can further reliably prevent the flat belt from falling off by preventing the flat belt from moving in the reverse direction.
the invention of the eleventh aspect is based on the invention of the tenth aspect,
The air supply device is used for supplying air without rotation shaking.
According to the above configuration, the air blower without rotational vibration does not pulsate like an engine, and therefore the one-way clutch reliably functions. Here, "no rotational jitter" means not only the case where there is no rotational jitter at all, but also includes the meaning that there may be some rotational jitter.
the invention of the twelfth aspect is based on the invention of any one of the ninth to eleventh aspects,
The structure is as follows: when the flat belt moves in the reverse direction by a force equal to or higher than a predetermined tension, the flat belt slips.
according to the above configuration, even when the reverse rotation torque is large and exceeds the rotation preventing capability of the one-way clutch for pulleys, the one-way clutch for pulleys can be prevented from being damaged or damaged by the slip of the flat belt, and the flat belt can be prevented from falling off.
Effects of the invention
As described above, according to the present invention, only the one-way clutch for the pulley is attached to the side surface of the pulley, and the pulley can be rotated only in the forward direction, whereby the reverse rotation of the pulley can be reliably prevented with a simple structure, and the breakage and the falling off of the belt can be prevented. Furthermore, a flat belt drive system can be obtained which is space-saving, has a small number of components and is light in weight. Further, the one-way clutch for a pulley can be attached to an existing pulley.
Drawings
Fig. 1 is a front view showing a one-way clutch for a pulley and its surroundings, in which a shutter is omitted.
Fig. 2 is a perspective view showing the meandering control device to which the one-way clutch for pulleys is attached.
Fig. 3 is a sectional view taken along line III-III of fig. 1.
fig. 4 is a view corresponding to fig. 1 when the reverse rotation preventing member is located at the reverse rotation preventing position.
fig. 5 is a front view showing the guide groove, the reverse rotation preventing member and the periphery thereof in an enlarged manner.
FIG. 6 is a front view showing a flat belt drive system.
Fig. 7A is a front view showing the driven pulley portion at the time of forward rotation of the flat belt drive system according to the related art.
Fig. 7B is a front view showing the driven pulley portion when the flat belt drive system according to the related art is reversed.
Fig. 8A is a front view showing a state in which the external one-way clutch according to the related art is rotated in the forward direction in a partially enlarged manner.
Fig. 8B is a front view partially enlarged to show a state in which the external one-way clutch according to the related art is reversed.
Detailed Description
embodiments of the present invention will be described below with reference to the drawings.
Fig. 2 shows a meandering control device 4, the meandering control device 4 having a meandering control pulley 5 as a pulley, and the meandering control pulley 5 having a one-way clutch 10 for the pulley according to the embodiment of the present invention mounted thereon. The meandering control device 4 is mounted on a flat belt drive system 1 shown in fig. 6, for example. In each drawing, a forward direction is indicated by an arrow F, and a reverse direction is indicated by an arrow R.
The flat belt transmission system 1 is used as a drive system of a blower, for example, and includes a driving pulley 2 driven by an actuator such as an electric motor, a driven pulley 3 coupled to a rotating shaft of a fan as the blower, and a flat belt 6 hung on the meandering control pulley 5, which is not shown in detail. The flat belt drive system 1 can be used not only for a blower but also for an air conditioner, a compressor, and the like. In particular, the present invention is directed to a device which has no rotational vibration or almost no rotational vibration, unlike a belt drive system attached to an output shaft of an engine. For example, the flat belt 6 has the following configuration: the core wire is included at the center in the thickness direction, and the core wire is sandwiched by the upper rubber and the base rubber. However, the type of the flat belt 6 is not particularly limited, and the material and the like are also not particularly limited.
As shown in fig. 2, the meandering control device 4 includes a base portion 4a and a tension arm 4c, the base portion 4a is attached to the blower or the like, the tension arm 4c is swingably supported by an arm support shaft 4b at one end of the base portion 4a, a pulley shaft 7 is provided on the tension arm 4c, and the pulley shaft 7 rotatably supports the meandering control pulley 5. Also shown in fig. 3, a collar 8 is fitted over the outer peripheral surface of the pulley shaft 7, and the collar 8 rotates integrally with the pulley shaft 7. The collar 8 may also be formed integrally with the pulley shaft 7. A dust cover 8a (omitted in fig. 1 and 4) is provided on the collar 8. The meandering control pulley 5 is rotatably supported by a collar 8 via a bearing 9. A predetermined tensile force is applied to the tension arm 4c by a tension spring 4d provided on the other end side of the base portion 4 a. The meandering control device 4 autonomously controls the running position of the flat belt 6, and since tension is stably applied by the tension spring 4d, the flat belt 6 can be made longer in life and free from maintenance.
as shown in fig. 1 and 3, the present invention is characterized in that: the meandering control pulley 5 is configured to prevent the flat belt from moving in one direction (reverse direction R). That is, the pulley one-way clutch 10 is attached to the side surface of the meandering control pulley 5, and the pulley one-way clutch 10 allows the meandering control pulley 5 to rotate only in the positive direction F. The one-way clutch for pulleys 10 includes a guide plate 11, and the guide plate 11 is attached to a side surface of the meandering control pulley 5. The guide plate 11 is made of a nonmagnetic material, for example, a circular plate of SUS304 stainless steel. The guide plate 11 is not limited to SUS304, and may be a nonmagnetic material having high rigidity. The guide plate 11 has a through hole 11a in its central portion into which the pulley shaft 7 is inserted, and includes, for example, three guide grooves 12. The guide groove 12 accommodates a reverse rotation preventing member 13, the reverse rotation preventing member 13 prevents the meandering control pulley 5 from rotating in reverse with respect to the pulley shaft 7, and the pulley shaft 7 rotatably supports the meandering control pulley 5. The reverse rotation preventing member 13 is made of, for example, a circular steel plate. The number of the guide grooves 12 may be less than 3, or may be 4 or more. The guide groove 12 plays the following roles: the reverse rotation preventing member 13 is guided to move between a reverse rotation preventing position B (shown in fig. 4) for preventing the reverse rotation of the meandering control pulley 5 and a normal rotation permitting position a (shown in fig. 1) for permitting the normal rotation of the meandering control pulley 5. The disk-shaped reverse rotation preventing member 13 is configured to: is rotatable in the guide groove 12 and is movable between a normal rotation permitting position a and a reverse rotation preventing position B.
one end side of the guide groove 12 extends in a direction away from the tangent point of the guide groove 12 with the outer peripheral surface of the collar 8, the other end side of the guide groove 12 extends in the opposite direction from the tangent point of the guide groove 12 with the outer peripheral surface of the collar 8, and a magnet 16 is provided at the end point, and the magnet 16 attracts the reverse rotation preventing member 13 toward the reverse rotation preventing position B. The setting of the magnetic force of the magnet 16 ensures: when the meandering control pulley 5 rotates in the normal direction F, the magnetic force does not prevent the reverse rotation preventing member 13 from moving to the normal rotation permitting position a. Since the magnet 16 is attracted, the reverse rotation preventing member 13 does not need to be pulled to the reverse rotation preventing position B by a spring or the like. Therefore, vibration due to a spring or the like is not generated.
That is, the reverse rotation preventing member 13 is configured to: as shown in fig. 1, when the meandering control pulley 5 rotates in the positive direction F, the reverse rotation preventing member 13 moves toward the positive rotation permitting position a due to the rotation of the meandering control pulley 5; as shown in fig. 4, when the meandering control pulley 5 is about to rotate in the reverse direction R, the reverse rotation preventing member 13 stays at the reverse rotation preventing position B and functions like a wedge, thereby preventing the meandering control pulley 5 from rotating in the reverse direction.
As shown in fig. 2 and 3, the outside of the guide groove 12 is covered by a disk-shaped outer shroud 14, and the outer diameter and the inner diameter of the outer shroud 14 are substantially equal to those of the guide plate 11. The outer shield 14 is also formed of a non-magnetic material, for example, SUS 304. In the present embodiment, the inside of the guide plate 11 is also covered by the inner shade 15. The inner shield 15 is also made of a non-magnetic material, for example, SUS 304. For example, when the guide groove 12 is formed to penetrate the guide plate 11, the inner shroud 15 is required, and when the bottom surface of the guide groove 12 is formed on the guide plate 11 by, for example, planing, the inner shroud 15 is not required. In the present embodiment, the pulley one-way clutch 10 can be configured as a unit by providing the guide groove 12 and the reverse rotation preventing member 13 on the guide plate 11, sandwiching the guide plate 11 between the outer shroud 14 and the inner shroud 15, and fixing them by the spring pin 17. The pulley one-way clutch 10 as a unit can be mounted on the meandering control pulley 5 by simply tightening the fixing bolts 18 into the screw holes 5a provided in the meandering control pulley 5. Therefore, since the threaded hole 5a is formed in the meandering control pulley 5, the pulley one-way clutch 10 can be attached to the conventional meandering control pulley 5.
As shown in fig. 5 in an enlarged manner, in the guide groove 12, the normal rotation allowing position a is disposed in a direction away from the pulley shaft 7, and the reverse rotation preventing position B is disposed in a direction close to the pulley shaft 7. The normal rotation allowing position a is indicated by a two-dot chain line, and a distance between the outer peripheral surface of the collar 8 and the inner peripheral surface of the guide groove 12 at the normal rotation allowing position a is L1. In addition, since the normal rotation allowing position a is other than the reverse rotation preventing position B, the size of L1 changes. When the reverse rotation preventing member 13 is in the reverse rotation preventing position B shown in fig. 4, a distance L2 between the outer peripheral surface of the pulley shaft 7 and the inner peripheral surface of the guide groove 12 is smaller than L1(L2< L1). Therefore, the reverse rotation preventing member 13 is configured to: in this position, the meandering control pulley 5 is prevented from being reversely rotated by biting into between the outer periphery of the pulley shaft 7 and the inner surface of the guide groove 12.
Next, the operation of the one-way clutch for pulley 10 according to the present embodiment will be described.
First, as shown in fig. 2 and 4, when the belt drive system 1 stops operating, the reverse rotation preventing member 13 is located at the reverse rotation preventing position B by the magnetic force of the magnet 16. At this time, the reverse rotation preventing member 13 bites between the outer periphery of the pulley shaft 7 and the inner surface of the guide groove 12 to function as a wedge, thereby reliably preventing the meandering control pulley 5 from rotating reversely. That is, when the fan, that is, the blower, is subjected to the action of wind or the like and is reversed, the reverse rotation preventing member 13 reliably prevents the meandering control pulley 5 from being reversed at the reverse rotation preventing position B. In the present embodiment, the magnetic inversion preventing member 13 is reliably attracted to the magnet 16 without being affected by the guide plate 11, the outer shroud 14, the inner shroud 15, and the guide groove 12, which are nonmagnetic members.
On the other hand, when the meandering control pulley 5 is about to rotate in the normal direction, such as when the blower is operating, the reverse rotation preventing member 13 rotates and moves toward the normal rotation permitting position a, which is the non-reverse rotation preventing position B. At a position other than the reverse rotation preventing position B, the reverse rotation preventing member 13 moves to a position not in contact with the pulley shaft 7 (collar 8) by centrifugal force while rotating, and is attached to the guide groove 12, so that the reverse rotation preventing member 13 does not interfere with the rotation of the meandering control pulley 5. Therefore, the meandering control pulley 5 normally rotates forward. In the normal rotation, the reverse rotation preventing member 13 does not contact the pulley shaft 7 (collar 8), and therefore, grease or the like is not required.
As described above, the reverse rotation preventing member 13 moves between the reverse rotation preventing position B and the normal rotation permitting position a in the guide groove 12, and when the reverse rotation preventing member 13 is located at the reverse rotation preventing position B, the reverse rotation preventing member 13 prevents the meandering control pulley 5 from rotating in the reverse direction; when the reverse rotation preventing member 13 is located at the normal rotation permitting position a, the reverse rotation preventing member 13 permits the meandering control pulley 5 to rotate in the normal direction.
In the present embodiment, it is not necessary to mount the one-way clutch inside, but the guide plate 11 is provided with the guide groove 12 and the reverse rotation preventing member 13, the guide plate 11 is sandwiched between the outer shade 14 and the inner shade 15, and the one-way clutch is mounted to the meandering control pulley 5 by a bolt or the like, so that the mounting is extremely easy and the structure is simple.
In the present embodiment, the meandering control pulley 5 can reliably prevent the flat belt 6 from meandering in the forward direction F and prevent the flat belt 6 from moving in the reverse direction R, thereby reliably preventing the flat belt 6 from falling off.
As in the present embodiment, the air blower without rotational vibration does not pulsate like the engine, and therefore the pulley one-way clutch 10 reliably functions.
therefore, according to the one-way clutch for pulleys 10 of the present embodiment, the reverse rotation preventing member 13 is housed in the guide groove 12 of the guide plate 11, the reverse rotation preventing member 13 prevents the meandering control pulley 5 from rotating in the reverse direction with respect to the pulley shaft 7, and the reverse rotation preventing member 13 is moved between the reverse rotation preventing position B at which the reverse rotation of the meandering control pulley 5 is prevented and the normal rotation permitting position a at which the normal rotation of the meandering control pulley 5 is permitted, whereby the reverse rotation of the meandering control pulley 5 can be reliably prevented with a simple structure. The meandering control pulley 5 can be reliably rotated only in one direction by a simple configuration. Further, the flat belt transmission system 1 according to the present embodiment can reliably prevent the flat belt 6 from falling off due to reverse rotation, and is space-saving, small in the number of parts, and light in weight.
(other embodiments)
The above-described embodiments of the present invention may also adopt the following configurations.
That is, in the above-described embodiment, the example in which the pulley one-way clutch 10 is attached to the meandering control pulley 5 has been described, but the attached pulley is not limited to the use for controlling the meandering, and is not particularly limited as long as it is a flat belt pulley. The pulley one-way clutch 10 of the present invention is particularly suitable for use in a flat belt drive system 1 free from rotational runout, but can also be applied to the case of slight runout.
Further, the following may be configured: when the flat belt 6 moves in the reverse direction R by a force equal to or higher than a predetermined tension, the flat belt 6 slips. That is, even when the reverse rotation torque is large and exceeds the rotation preventing capability of the one-way clutch for pulleys 10, the flat belt 6 can be prevented from slipping to break or damage the one-way clutch for pulleys 10 and to drop off the flat belt 6.
In the above embodiment, the collar 8 is fitted around the outer periphery of the pulley shaft 7, the collar 8 and the pulley shaft 7 rotate integrally, and the reverse rotation preventing member 13 is brought into contact with the collar 8, but the reverse rotation preventing member 13 may be brought into direct contact with the pulley shaft 7 without providing the collar 8.
The above embodiments are merely preferable examples in nature, and are not intended to limit the scope of the present invention, its application objects, or its uses.
-description of symbols-
1 flat belt drive system
2 driving pulley
3 driven pulley
4 snaking control device
4a base
4b arm supporting axle
4c tension arm
4d extension spring
5 Snake control belt wheel (Belt wheel)
6 flat belt
7 pulley shaft
8 axle ring (with wheel axle)
9 bearing
10 one-way clutch for belt pulley
11 guide plate
12 guide groove
13 reverse rotation preventing member
13a steel ball
14 outer shield
15 inner side shield
16 magnet
17 spring pin
18 fixing the bolt.
Claims (12)
1. a one-way clutch for a pulley, characterized in that: the pulley is attached to a side surface of the pulley by a one-way clutch and is allowed to rotate only in a forward direction.
2. The one-way clutch for a pulley according to claim 1, characterized in that:
The one-way clutch for the belt pulley comprises a guide plate, a reverse rotation preventing component and a guide groove,
the guide plate is installed on the side surface of the belt wheel,
The reverse rotation preventing member is provided on the guide plate and prevents the pulley from being reversely rotated with respect to a pulley shaft that supports the pulley to be rotatable,
The guide groove accommodates the reverse rotation preventing member, and guides the reverse rotation preventing member to move between a reverse rotation preventing position where the reverse rotation of the pulley is prevented and a normal rotation permitting position where the normal rotation of the pulley is permitted.
3. The one-way clutch for a pulley according to claim 2, characterized in that:
in the guide groove, the normal rotation permitting position is disposed in a direction away from the pulley shaft, and the reverse rotation preventing position is disposed in a direction close to the pulley shaft,
The reverse rotation preventing member is configured to: in the reverse rotation preventing position, the reverse rotation preventing member is engaged between the outer peripheral surface of the pulley shaft and the inner peripheral surface of the guide groove to prevent the pulley from rotating reversely.
4. The one-way clutch for a pulley according to claim 3, characterized in that:
The reverse rotation preventing member is configured to: when the pulley is rotating in the normal direction, the reverse rotation preventing member moves toward the normal rotation permitting position due to the rotation of the pulley, and when the pulley is about to rotate in the reverse direction, the reverse rotation preventing member prevents the pulley from rotating in the reverse rotation preventing position.
5. The one-way clutch for a pulley according to any one of claims 2 to 4, characterized in that:
The reverse rotation preventing member includes a magnetic body,
The guide plate and the guide groove are not magnetic bodies,
A magnet that attracts the reverse rotation preventing member toward the reverse rotation preventing position is provided at an end of the guide groove on the reverse rotation preventing position side.
6. The one-way clutch for a pulley according to claim 5, characterized in that:
the reverse rotation preventing member is in a shape of a circular plate, and the reverse rotation preventing member is configured to: the guide groove is rotatable and movable between the normal rotation permitting position and the reverse rotation preventing position, and the pulley shaft is brought into non-contact with the pulley shaft by a centrifugal force during normal rotation.
7. The one-way clutch for a pulley according to any one of claims 2 to 6, characterized in that:
The guide groove is covered by a shield plate, and the pulley is formed as a unit by a one-way clutch.
8. A pulley, characterized by: the one-way clutch for a pulley according to any one of claims 1 to 7 is fixed to the pulley.
9. A flat belt drive system characterized by: comprising the pulley, pulley shaft and flat belt of claim 8,
The pulley shaft supports the pulley rotatably,
The flat belt is hung on the belt wheel.
10. the flat belt drive system of claim 9, wherein:
The pulley is a meandering control pulley that controls meandering of the flat belt,
the flat belt drive system is configured to: the meandering control pulley prevents the flat belt from moving in a reverse direction.
11. The flat belt drive system of claim 10, wherein:
The flat belt transmission system is used for an air supply device without rotation shaking.
12. the flat belt drive system according to any one of claims 9 to 11, wherein:
The flat belt transmission system comprises: when the flat belt moves in the reverse direction by a force equal to or higher than a predetermined tension, the flat belt slips.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-088624 | 2017-04-27 | ||
| JP2017088624 | 2017-04-27 | ||
| PCT/JP2018/008887 WO2018198546A1 (en) | 2017-04-27 | 2018-03-08 | One-way clutch for pulley, pulley equipped with same, and flat belt transmission system equipped with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110546404A true CN110546404A (en) | 2019-12-06 |
Family
ID=63918912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880026582.7A Pending CN110546404A (en) | 2017-04-27 | 2018-03-08 | One-way clutch for belt pulley, belt pulley comprising one-way clutch for belt pulley and flat belt transmission system comprising belt pulley |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6412293B1 (en) |
| CN (1) | CN110546404A (en) |
| WO (1) | WO2018198546A1 (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006009986A (en) * | 2004-06-28 | 2006-01-12 | Bando Chem Ind Ltd | Belt transmission system |
| CN1995738A (en) * | 2006-12-12 | 2007-07-11 | 张新金 | Wave power generation device |
| CN200993048Y (en) * | 2006-12-26 | 2007-12-19 | 奇瑞汽车有限公司 | Automobile engine accessory wheel system |
| JP3194017U (en) * | 2014-08-20 | 2014-10-30 | 連總興有限公司 | One way clutch |
| CN104246264A (en) * | 2012-04-18 | 2014-12-24 | 利滕斯汽车合伙公司 | Power transmitting device with overrunning decoupler |
| US20150260265A1 (en) * | 2014-03-12 | 2015-09-17 | Motorcar Parts Of America, Inc. | Overrunning alternator decoupling pulley design |
| CN105074282A (en) * | 2013-07-25 | 2015-11-18 | 日本精工株式会社 | Pulley device with embedded unidirectional clutch |
| WO2016155725A1 (en) * | 2015-03-27 | 2016-10-06 | Schaeffler Technologies AG & Co. KG | Pulley decoupler |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52160072U (en) * | 1976-05-27 | 1977-12-05 | ||
| JP4772657B2 (en) * | 2006-12-22 | 2011-09-14 | Ｎｔｎ株式会社 | Assembling method of one-way clutch unit |
-
2018
- 2018-03-08 CN CN201880026582.7A patent/CN110546404A/en active Pending
- 2018-03-08 JP JP2018512643A patent/JP6412293B1/en not_active Expired - Fee Related
- 2018-03-08 WO PCT/JP2018/008887 patent/WO2018198546A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006009986A (en) * | 2004-06-28 | 2006-01-12 | Bando Chem Ind Ltd | Belt transmission system |
| CN1995738A (en) * | 2006-12-12 | 2007-07-11 | 张新金 | Wave power generation device |
| CN200993048Y (en) * | 2006-12-26 | 2007-12-19 | 奇瑞汽车有限公司 | Automobile engine accessory wheel system |
| CN104246264A (en) * | 2012-04-18 | 2014-12-24 | 利滕斯汽车合伙公司 | Power transmitting device with overrunning decoupler |
| CN105074282A (en) * | 2013-07-25 | 2015-11-18 | 日本精工株式会社 | Pulley device with embedded unidirectional clutch |
| US20150260265A1 (en) * | 2014-03-12 | 2015-09-17 | Motorcar Parts Of America, Inc. | Overrunning alternator decoupling pulley design |
| JP3194017U (en) * | 2014-08-20 | 2014-10-30 | 連總興有限公司 | One way clutch |
| WO2016155725A1 (en) * | 2015-03-27 | 2016-10-06 | Schaeffler Technologies AG & Co. KG | Pulley decoupler |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2018198546A1 (en) | 2019-06-27 |
| JP6412293B1 (en) | 2018-10-24 |
| WO2018198546A1 (en) | 2018-11-01 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20191206 |