KR20110048273A - Pully assembly for vehicle cooling fan operating - Google Patents

Pully assembly for vehicle cooling fan operating Download PDF

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Publication number
KR20110048273A
KR20110048273A KR1020090105011A KR20090105011A KR20110048273A KR 20110048273 A KR20110048273 A KR 20110048273A KR 1020090105011 A KR1020090105011 A KR 1020090105011A KR 20090105011 A KR20090105011 A KR 20090105011A KR 20110048273 A KR20110048273 A KR 20110048273A
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KR
South Korea
Prior art keywords
cooling fan
engine
driving
crankshaft
pulley
Prior art date
Application number
KR1020090105011A
Other languages
Korean (ko)
Inventor
최승호
Original Assignee
현대자동차주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대자동차주식회사 filed Critical 현대자동차주식회사
Priority to KR1020090105011A priority Critical patent/KR20110048273A/en
Publication of KR20110048273A publication Critical patent/KR20110048273A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P5/12—Pump-driving arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
    • F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2050/00—Applications
    • F01P2050/22—Motor-cars
    • 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
    • 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
    • F16H7/02—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pulleys (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

PURPOSE: A pulley assembly for driving a vehicle cooling fan is provided to drive a cooling fan using the power of an engine and to reduce vibration through a damping unit. CONSTITUTION: A pulley assembly for driving a vehicle cooling fan comprises a pulley body(110) and a damping unit(120). The pulley body comprises an inner shell(111) inserted into a crank shaft and an outer shell(113) fitted with a driving belt on the exterior thereof. The damping unit is formed in a disk shape connecting the inner and outer shells and absorbs the vibration delivered from the crank shaft between the inner and outer shells. The damping unit comprises a mounting plate(121) in which one or more mounting holes are arranged at an angular interval of 60°, elastic members(125) which are installed in the mounting holes to absorb vibration from the crank shaft, and cover plates(127) which are mounted on both sides of the mounting plate to fix the elastic members.

Description

Pulley assembly for driving a vehicle cooling fan {PULLY ASSEMBLY FOR VEHICLE COOLING FAN OPERATING}

The present invention relates to a pulley assembly for driving a vehicle cooling fan, and more particularly, to a vehicle cooling fan driving pulley assembly for absorbing vibration generated from the engine and transferring the cooling fan to the cooling fan when the cooling fan is driven by the driving force of the engine. It is about.

In general, the temperature of the combustion gas in the cylinder of the engine reaches 2000 ℃ or more, and a considerable amount of the heat of combustion is transmitted to the cylinder block, the cylinder head, and the piston to raise the temperature of the engine. In this case, the cylinder block or the cylinder head may be deformed, or the oil film on the inner wall of the cylinder may be broken.

Therefore, the engine cooling method includes an air-cooling type that directly cools the outside of the engine using outside air and a water cooling type that circulates and cools the cooling water inside the engine. Water cooling is mostly applied.

In the water-cooling type, the cooling water is supplied into the water jacket of the cylinder block and the cylinder head by a water pump to absorb combustion heat, and the cooling water absorbing the combustion heat is circulated to the radiator to radiate heat.

The cooling water is cooled by the outside air in the radiator, a cooling fan is installed in the front or rear of the radiator to improve the heat dissipation effect by inducing the flow of the outside air smoothly.

That is, in the engine room of the vehicle, a cooling fan for cooling them by installing air from the outside and blowing them to a radiator or an air conditioning capacitor is installed, which is usually installed at the rear of the radiator in the engine room.

The cooling fan mounted for cooling the radiator is different from the driving method according to the vehicle type. Here, the driving device of the cooling fan applied to a large vehicle such as a bus will be described.

That is, the cooling fan of the bus in which the engine is mounted on the rear portion of the vehicle body is usually mounted to blow in the longitudinal direction of the vehicle body. Accordingly, the engine pulley coupled to the front end of the crankshaft 1 rotates with the power of the engine. (3), as shown in Figure 1, is connected to the idle pulley (7) via a first power transmission belt (5), the idle pulley (7) is a second power transmission belt (9). It is structured to be connected to the fan pulley (11).

Here, the idle pulley 7 is rotatably coupled to each other through the swing arm 15 mounted on the fan shroud 13, the radiator frame 17 is mounted on the front of the fan shroud 13 do.

The radiator assembly 19 is mounted on the front surface of the radiator frame 17. The space between the fan shroud 13 and the radiator assembly 19 is applied to the crankshaft 1 through the fan pulley 11. The cooling fan 21 that is received and rotated is installed to be rotatable.

However, in the conventional bus cooling fan driving apparatus, the engine pulley 11 simply transmits the driving force of the crankshaft 1, and thus the vibration generated from the crankshaft 1 is intact with the idle pulley 7. Transfer to the fan pulley 11 is generated when the cooling fan 21 is driven, which increases the operating friction of each power transmission belt (5, 9). Therefore, the tension of each power transmission belt (5, 9) was changed differently to induce early damage of each power transmission belt (5, 9).

In addition, the vibration generated from the crankshaft (1) is transmitted to the cooling fan 21 through the idle pulley (7) and the fan pulley (11), and transmitted directly to the interior of the vehicle to reduce the ride comfort, to prevent this In order to install additional vibration reduction device in order to increase the cost.

Accordingly, the present invention has been invented to solve the above problems, the object of the present invention comprises a damping unit mounted to absorb the vibration generated from the engine when driving the cooling fan through the driving force of the engine. Thus, by driving the cooling fan in a state in which the vibration generated in the engine is reduced as much as possible, it is to provide a pulley assembly for driving the vehicle cooling fan to minimize the vibration transmitted to the vehicle interior to improve the riding comfort.

Vehicle cooling fan drive pulley assembly according to an embodiment of the present invention for achieving this object is coupled to the crankshaft of the engine to transmit the driving force of the engine to the cooling fan for cooling the radiator is rotated by the power of the engine A pulley assembly for driving a cooling fan, comprising: an inner cylinder fitted to the crankshaft and a pulley body including an outer cylinder fitted with a power transmission belt on an outer circumferential surface thereof; And a damping unit mounted between the inner and outer cylinders of the pulley body to absorb vibrations generated from the crankshaft.

The damping unit may have a disc shape, wherein the mounting plate interconnects the outer cylinder and the inner cylinder between the outer cylinder and the inner cylinder, and at least one mounting hole is formed along the circumferential direction; An elastic member mounted to each of the mounting holes to absorb vibration generated from the crankshaft; And a cover plate on which one inner surface and one inner surface of the mounting plate are fixed to the outer circumferential surface of the inner cylinder to fix the elastic members.

Each of the mounting holes may be spaced apart at an angle of 60 ° along the circumferential direction with respect to the center of the mounting plate.

Each cover plate is formed in a ring shape, characterized in that the fitting holes are formed in the circumferential direction at positions corresponding to the elastic members, respectively.

The elastic member is characterized in that both ends of the coil spring is supported on both sides of the inner mounting holes.

According to the pulley assembly for driving a vehicle cooling fan according to the embodiment of the present invention as described above, by driving the cooling fan through the driving force of the engine, by including a damping unit to absorb the vibration generated from the engine, in the engine By driving the cooling fan in a state in which the generated vibration is reduced as much as possible, there is an effect of minimizing the vibration transmitted to the vehicle interior to improve the riding comfort.

In addition, by transmitting the driving force of the engine to the idle pulley and fan pulley with a minimum of vibration, it is possible to reduce the friction loss of the power transmission belt and to reduce the power consumption of the cooling system.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory only and are not restrictive of the invention, It should be understood that various equivalents and modifications may be present.

Figure 2 is a perspective view of a vehicle cooling fan driving pulley assembly according to an embodiment of the present invention, Figure 3 is a cross-sectional view taken along line AA of Figure 2, Figure 4 is a vehicle cooling fan driving pulley according to an embodiment of the present invention. 5 is an exploded perspective view of an assembly, and FIG. 5 illustrates a vibration amount generated in an idle pulley with respect to an engine vibration amount generated according to an engine speed in a vehicle to which a vehicle cooling fan driving pulley assembly according to an embodiment of the present invention is applied. Figure 6 is a graph showing a comparison, Figure 6 is a graph showing the vibration amount and vibration force of the power transmission belt according to the engine speed according to the engine speed in the vehicle to which the vehicle cooling fan drive pulley assembly according to an embodiment of the present invention compared to be.

However, in describing the configuration of the exemplary embodiment of the present invention, the same components as those of the prior art will be described with the same drawings and reference numerals.

Referring to the drawings, the vehicle cooling fan driving pulley assembly 100 according to an exemplary embodiment of the present invention provides the driving force of the engine to the cooling fan 21 (see Fig. 1) for cooling the radiator 19 (see Fig. 1). It is coupled to the crankshaft 1 (see FIG. 1) of the engine for rotation and rotated by the power of the engine.

Here, the vehicle cooling fan driving pulley assembly 100 according to the embodiment of the present invention is mounted on the crankshaft (1, FIG. 1) in place of the conventional engine pulley (3, FIG. 1), such a pulley assembly 100 is connected to an idle pulley 7 (see FIG. 1) via a first power transfer belt 5 (see FIG. 1), and the idle pulley 7 (see FIG. 1) is connected to a second power transfer belt 9. 1) is connected to the fan pulley 11 (see FIG. 1) connected to the cooling fan 21 (see FIG. 1) via the power of the engine to rotate the cooling fan 21 (see FIG. 1). Applied to a cooling fan drive device made of a structure.

Here, the vehicle cooling fan driving pulley assembly 100 according to the embodiment of the present invention, when driving the cooling fan 21 through the driving force of the engine, the damping unit 120 mounted to absorb the vibration generated from the engine By including the configuration, by driving the cooling fan 21 in a state in which the vibration generated in the engine as much as possible, to minimize the vibration transmitted to the vehicle interior to improve the ride comfort.

To this end, the vehicle cooling fan drive pulley assembly 100 according to an embodiment of the present invention, as shown in Figure 2, consists of a pulley body 110 and a damping unit 120, which is further configured for each configuration It will be described in detail as follows.

First, the pulley body 110 is composed of an inner cylinder 111 fitted to the crankshaft 1 and an outer cylinder 113 fitted with the first power transmission belt 5 on an outer circumferential surface thereof.

The damping unit 120 is mounted between the inner cylinder 111 and the outer cylinder 113 of the pulley body 110 to absorb vibration generated from the crankshaft 1.

The damping unit 120, as shown in Figures 3 and 4, is composed of a mounting plate 121, an elastic member 125, and a cover plate 127.

First, the mounting plate 121 is mounted through a bolt (B) in a state in which the inner cylinder 111 and the outer cylinder 113 are interconnected between the inner cylinder 111 and the outer cylinder 113 in a disc shape.

At least one mounting hole 123 is formed in the mounting plate 121 in the circumferential direction with respect to the center.

Here, each of the mounting holes 123 is formed to be spaced apart at an angle of 60 ° along the circumferential direction with respect to the center of the mounting plate 121, it is preferably formed in six places on the mounting plate 121, respectively. .

In the present embodiment, the mounting holes 123 are described in one embodiment in which six mounting holes 123 are formed at six locations at 60 ° in the circumferential direction of the mounting plate 121, but the present disclosure is not limited thereto. Position and number may be changed.

In the present embodiment, the elastic member 125 is mounted in each of the mounting holes 123 to receive and absorb vibration generated from the crankshaft 1 through the pulley body 110 and the mounting plate 121. Done.

Here, each of the elastic members 125 is preferably made of a coil spring that is mounted by interference fit so that both ends are supported on both sides of the inside of the mounting hole 123.

In addition, the cover plate 127 is mounted so that the inner circumferential surface is fixed to the outer circumferential surface of the inner cylinder 111 on one surface and the other surface of the mounting plate 121 to fix the respective elastic members 125.

Here, each cover plate 127 is formed in a ring shape, and the fitting holes 129 are formed along the circumferential direction at positions corresponding to the elastic members 125, respectively.

That is, the damping unit 120 having such a configuration is mounted on the pulley body 110 composed of the inner cylinder 111 and the outer cylinder 113 to form the pulley assembly 100, and thus generated from the crankshaft 1. The vibration is effectively absorbed and reduced to be transmitted to the idle pulley 7 through the first power transmission belt (5).

Then, the idle pulley 7 transmits the rotational force transmitted by reducing vibration to the fan pulley 11 through the second power transmission belt 9, and the fan pulley 11 is in a state where vibration is reduced. The cooling fan 21 is rotated through the driving force of the transmitted engine.

That is, the pulley assembly 100 according to the embodiment of the present invention, as shown in Figure 5, in a state in which the vibration of the crankshaft 1 is reduced through the damping unit 120 according to the engine speed By transmitting to the idle pulley 7, compared with the prior art, the amount of vibration generated in the idle pulley 7 can be significantly reduced.

And the pulley assembly 100 according to an embodiment of the present invention, as shown in Figure 6, compared to the prior art and the amount of vibration generated in the first power transmission belt 5 is connected to the idle pulley 7 and It is possible to reduce the strength of the vibration force, thereby minimizing the occurrence of flow when driving the cooling fan 21, it is possible to increase the durability by reducing the operation friction of each power transmission belt (5, 9).

Accordingly, when the vehicle cooling fan driving pulley assembly 100 according to the embodiment of the present invention configured as described above is applied, the vibration generated from the engine is absorbed when the cooling fan 21 is driven through the driving force of the engine. By including the damping unit 120 so as to drive the cooling fan 21 in the state to minimize the vibration generated in the engine, it is possible to minimize the vibration transmitted to the interior of the vehicle to improve the ride comfort.

In addition, by transmitting the driving force of the engine to the idle pulley (7) and fan pulley (11) in a state of minimizing vibration, it is possible to reduce the frictional loss of the power transmission belt (5, 9) and to reduce the power consumption of the cooling system.

In addition, there is no need to install a separate vibration reduction device to reduce the vibration of the crankshaft (1) can reduce the manufacturing cost.

As mentioned above, although this invention was demonstrated by the limited embodiment and drawing, this invention is not limited by this and is given by the person of ordinary skill in the art to the following, Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

1 is a perspective view of a cooling fan driving apparatus mounted on a conventional bus.

2 is a perspective view of a pulley assembly for driving a vehicle cooling fan according to an exemplary embodiment of the present invention.

3 is a cross-sectional view taken along the line A-A of FIG.

4 is an exploded perspective view of a pulley assembly for driving a vehicle cooling fan according to an exemplary embodiment of the present invention.

5 is a graph showing the amount of vibration generated in the idle pulley compared to the prior art with respect to the vibration amount of the engine generated according to the engine speed in a vehicle to which the vehicle cooling fan driving pulley assembly according to an embodiment of the present invention. .

6 is a graph showing the vibration amount and vibration force of the power transmission belt according to the engine speed in the vehicle to which the vehicle cooling fan driving pulley assembly according to an embodiment of the present invention is compared with the prior art.

Claims (5)

In the pulley assembly for driving a vehicle cooling fan coupled to the crankshaft of the engine to rotate the power of the engine to transmit the driving force of the engine to the cooling fan for cooling the radiator, A pulley body including an inner cylinder fitted to the crankshaft and an outer cylinder fitted with a power transmission belt on an outer circumferential surface thereof; And And a damping unit mounted between the inner and outer cylinders of the pulley body to absorb vibrations generated from the crankshaft. The method of claim 1, The damping unit is The mounting plate interconnecting the outer cylinder and the inner cylinder between the outer cylinder and the inner cylinder in a disk shape and having at least one mounting hole formed along a circumferential direction; An elastic member mounted to each of the mounting holes to absorb vibration generated from the crankshaft; And An inner circumferential surface is fixed to the outer circumferential surface of the inner cylinder at one surface and the other surface of the mounting plate, respectively, and comprises a cover plate for fixing each of the elastic members. The method of claim 2, Each mounting hole is a vehicle cooling fan drive pulley assembly, characterized in that formed in the circumferential direction spaced apart by 60 ° relative to the center of the mounting plate. The method of claim 2, Each cover plate is formed in a ring shape, the vehicle cooling fan drive pulley assembly, characterized in that the fitting holes are formed in the circumferential direction corresponding to each of the elastic members. The method of claim 2, The elastic member is a vehicle cooling fan drive pulley assembly, characterized in that the both ends of the coil spring is supported on both sides of the inner mounting holes.
KR1020090105011A 2009-11-02 2009-11-02 Pully assembly for vehicle cooling fan operating KR20110048273A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020090105011A KR20110048273A (en) 2009-11-02 2009-11-02 Pully assembly for vehicle cooling fan operating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020090105011A KR20110048273A (en) 2009-11-02 2009-11-02 Pully assembly for vehicle cooling fan operating

Publications (1)

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KR20110048273A true KR20110048273A (en) 2011-05-11

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KR1020090105011A KR20110048273A (en) 2009-11-02 2009-11-02 Pully assembly for vehicle cooling fan operating

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103089390A (en) * 2011-11-02 2013-05-08 常州黄海汽车有限公司 Bus fan-belt transmission mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103089390A (en) * 2011-11-02 2013-05-08 常州黄海汽车有限公司 Bus fan-belt transmission mechanism
CN103089390B (en) * 2011-11-02 2014-10-15 常州黄海汽车有限公司 Bus fan-belt transmission mechanism

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