KR20170028208A - Isolation damper pulley - Google Patents

Isolation damper pulley Download PDF

Info

Publication number
KR20170028208A
KR20170028208A KR1020150125164A KR20150125164A KR20170028208A KR 20170028208 A KR20170028208 A KR 20170028208A KR 1020150125164 A KR1020150125164 A KR 1020150125164A KR 20150125164 A KR20150125164 A KR 20150125164A KR 20170028208 A KR20170028208 A KR 20170028208A
Authority
KR
South Korea
Prior art keywords
hub
angle
pulley
friction
pulley portion
Prior art date
Application number
KR1020150125164A
Other languages
Korean (ko)
Other versions
KR101755835B1 (en
Inventor
윤제용
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 KR1020150125164A priority Critical patent/KR101755835B1/en
Publication of KR20170028208A publication Critical patent/KR20170028208A/en
Application granted granted Critical
Publication of KR101755835B1 publication Critical patent/KR101755835B1/en

Links

Images

Classifications

    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/129—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon characterised by friction-damping means
    • F16F15/1297—Overload protection, i.e. means for limiting torque
    • 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
    • F16H2055/366—Pulleys with means providing resilience or vibration damping

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Pulleys (AREA)

Abstract

The present invention relates to a vibration isolation damper pulley capable of preventing breakage of a rubber, which is capable of preventing vibration of a rubber even if an excessive torque is inputted.
A vibration isolation damper pulley according to the present invention includes a hub 10 installed at the center and to which rotational force is inputted, a pulley portion 20 provided outside the hub 10 and provided with a belt, The vibration isolation damper pulley includes a rubber disposed between the pulley portions and insulates vibration inputted to the hub, wherein a twist angle of the hub and the pulley portion When the angle exceeds the predetermined angle, twisting angle reducing means for reducing the angle of twist angle by frictional contact with each other to exhaust a part of the torque inputted to the hub 10 by friction is provided between the hub 10 and the pulley portion 20, Respectively.

Description

{ISOLATION DAMPER PULLEY}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a vibration isolation damper pulley for driving a bogie in an engine of a vehicle, and more particularly, to a vibration isolation damper pulley capable of preventing breakage of a rubber even when an excessive torque is input, To a vibration isolation damper pulley.

A part of the power generated from the engine of the vehicle is used to drive an accessory device installed in the engine room through a drive belt.

For example, a part of the engine power is driven by a damper 100 as shown in FIG. 1, and the durability of the drive belt is lowered due to torsional vibration introduced from the engine. The rubber 130 is provided between the hub 110 and the pulley 120 so as to eliminate the problem of noise.

The hub 110 includes a hub 110 to which a rotational force is inputted from the engine and a belt is installed on the outer side of the hub 110. The hub 110 and the pulley 120 The torsional vibration transmitted as shown by an arrow in Fig. 2 causes the rubber 130 to be reduced.

The vibration isolation damper pulley according to the related art has a problem that when the excessive torsional vibration is inputted through the hub 110, the rubber 130 is torn.

In the vibration isolation damper 100, a slit 121 is formed in the pulley 120 so that the driver can sense the breakage of the rubber 130, and the slit 121 The stopper 111 is positioned inside the stopper 111.

3, the stopper 111 is positioned at the predetermined position of the slit 121. However, when the engine is driven, the stopper 111 is positioned within the slit 121 (See Fig. 4), which is within a normal range. So that the rubber 130 absorbs the torsional vibration of the torque input through the hub 110.

At this time, when the excessive vibration is inputted through the hub 110, the relative rotation angle of the hub 110 and the pulley portion 120 increases, so that the rubber 130 is torn and broken, The slit 121 rotates by an angle b so as to contact the end of the slit 121 beyond the normal range, that is, the angle a, so that the driver recognizes the slit 121 by hitting the end of the slit 121 (see FIG.

6, when the relative rotation angle of the hub 110 and the pulley portion 120, that is, the torque at which the twist angle exceeds the normal range is input, all of the torques are used to increase the twist angle, (Angle " a "), the rubber 130 is broken.

However, in the vibration isolation damper 100 according to the related art as described above, the damage to the rubber 130 is recognized, but the structure for preventing the rubber 130 from being damaged is not applied, There is a problem that the rubber 130 is damaged, and thus the vibration isolation damper 100 needs to be replaced.

On the other hand, the following prior art reference discloses a technique relating to 'durability life detecting damper pulley'.

KR 10-2007-0003346 A

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a vibration isolating apparatus and a vibration isolating apparatus, which can prevent a rubber from being twisted with respect to a torsional vibration exceeding the normal range, It is an object of the present invention to provide a damper pulley.

According to an aspect of the present invention, there is provided a vibration isolation damper pulley including: a hub installed at a center and to which a rotational force is inputted; a pulley portion provided on an outer side of the hub and provided with a belt; And a rubber which is installed in the hub and insulates the vibration inputted to the hub, wherein when the twist angle of the hub and the pulley portion exceeds a predetermined angle, Wherein the hub and the pulley portion are provided with twist angle reducing means for reducing the angle of the twist angle by friction.

Wherein the torsion angle reducing means is a friction washer provided at one side of the pulley portion so as to be in frictional contact with an end of the friction cage when the torsion angle exceeds a predetermined angle .

The friction cage is installed at an end of a stopper protruding from one side of the hub so as to be located in the slit formed along the circumferential direction of the pulley portion in the pulley portion.

And the friction washer is installed on the inner surface of the washer housing formed along the circumferential direction of the pulley portion from the end of the slit.

The washer housing is formed such that one end thereof is opened and the other end thereof is closed, and the friction washer is fixed to the inside of the washer housing.

And when the twist angle of the hub and the pulley portion reaches the maximum normal range angle, the friction cage is installed to start contacting with the friction washer.

According to the vibration isolation damper pulley according to the related art having the above-described structure, when the twist of the rubber is twisted in the normal range with respect to the twist transmitted from the engine, and the twist exceeding the normal range is transmitted from the engine It is possible to prevent the rubber from being broken when the friction cage is brought into contact with the friction washer so that the twist exceeding the normal is inputted.

As described above, it is possible to prevent the breakage of the rubber, and it is possible to solve the problem that the breakage of the rubber causes the breakage of the breakage vibration damper pulley.

1 is a perspective view showing a vibration isolation damper pulley according to the related art;
2 is a cross-sectional view of a vibration isolation damper pulley according to the prior art;
3 is a front view showing the position of a stopper when the vibration isolation damper pulley according to the related art is stopped.
4 is a front view showing a position of a stopper in a normal operation in a vibration isolation damper pulley according to the related art.
5 is a front view showing a position of a stopper when a rubber breakage occurs in the vibration isolation damper pulley according to the related art.
6 is a graph showing the characteristics of a vibration isolation damper pulley according to the prior art;
7 is a partially enlarged perspective view showing a vibration isolation damper pulley according to the present invention.
8A and 8B are schematic views for explaining the action of the friction cage and the friction washer in the vibration isolation damper pulley according to the present invention.
9 is a front view showing a position of a stopper when the vibration isolation damper pulley according to the present invention is rotated.
10 is a graph showing the characteristics of a vibration isolation damper pulley according to the present invention.

Hereinafter, a vibration isolation damper pulley according to the present invention will be described in detail with reference to the accompanying drawings.

A vibration isolation damper pulley according to the present invention includes a hub 10 installed at the center and to which rotational force is inputted, a pulley portion 20 provided outside the hub 10 and provided with a belt, The vibration isolation damper pulley is disposed between the pulley portion and insulates the vibration input to the hub. The vibration isolation damper pulley has a twist angle of the hub (10) and the pulley portion (20) When the angle is exceeded, twist angle reducing means for reducing the angle of twist angle by frictional contact with each other and consuming a part of the torque inputted to the hub 10 with friction is applied to the hub 10 and the pulley portion 20 Respectively.

The hub 10 is located at the center of the vibration isolation damper pulley 1, and a rotational force is inputted from the outside.

A pulley portion 20 is disposed on the outside of the hub 10 and is coupled to the hub 10 to rotate together when the hub 10 rotates.

A rubber (not shown) is positioned between the hub 10 and the pulley 20 so that when the torsional vibration is input to the hub 10, the rubber is twisted to absorb the torsional vibration, (20).

A stopper 11 and a slit 21 are formed in the hub 10 and the pulley 20, respectively. If excessive vibration is inputted to such a degree that the rubber is broken, the driver can recognize the excessive vibration.

The slits 21 are formed on the hub 10 at a constant angle along the circumferential direction. The slits 21 may be formed in plural along the circumferential direction of the hub 10 and may be disposed at the same interval.

The stopper 11 is formed to protrude from the hub 10 and is located inside the slit 21. The stopper 11 is located at an intermediate portion of the slit 21 if the engine is stopped or the engine is operated within a normal range. That is, as shown in Fig. 8, the stopper 11 moves within the angular range shown from the state of Fig. 8 to a.

On the other hand, when a twist exceeding a normal range is inputted to the hub 10 and the pulley 20, the twist angle of the hub 10 and the pulley 20 is reduced so as to prevent the rubber from being damaged A torsion angle reducing means is provided.

An example of the twist angle reducing means may be a friction cage 12 installed on one side of the pulley 20 and a friction washer 23 fixed to the hub 10. That is, when the friction cage 12 and the friction washer 23 exceed the predetermined twist angle, they contact each other to reduce the twist angle, thereby reducing the damage of the rubber.

The friction cage 12 is fastened to one side of the pulley portion 20, preferably to the end portion of the stopper 11. The friction cage 12 is fastened to the end of the stopper 11 by press fitting so that when the vibration insulating damper pulley 1 is rotated, the slit 21 is integrally formed with the stopper 11, (21).

A washer housing 22 is formed along the circumferential direction of the hub 10 from the end of the slit 21 at the hub 10. The washer housing 22 has a cross section that is open at its one end and closed at its other end and has a cross section that protrudes from the surface of the hub 10 in the form of an inverted U- . The slit 21 and the washer housing 22 coexist on a virtual arc having the same radius.

The friction washer (23) is installed on the inner surface of the washer housing (22). The friction washer 23 contacts the friction cage 12 to suppress the torsion of the rubber when the vibration insulation damper pulley 1 receives a torsion exceeding an appropriate range.

The friction washer 23 is configured such that when the twist angle between the hub 10 and the pulley 20 reaches a maximum in a normal range and the friction cage 12 enters the inside of the washer housing 22, The friction cage 12 contacts and rubs against the front end surface of the friction washer 23, thereby causing a part of the torque to be exhausted by friction. So that even if the same torque is inputted, the relative rotation angle, that is, the torsion angle is reduced to reduce the damage of the rubber 30.

The operation of the vibration isolation damper pulley according to the present invention having the above-described structure will now be described.

 The vibration isolation damper pulley 1 according to the present invention is configured such that when the rotational force generated by driving the engine of the vehicle is input to the hub 10 of the vibration isolation damper pulley 1, Is reduced by the rubber and is transmitted to the pulley portion (20).

At this time, the stopper 11 maintains the rotated state within the range of the angle a from the initial position.

On the other hand, when the vibration isolation damper pulley 1 receives a twist over a normal range, the stopper 11 is out of the range of the angle a. When the stopper 11 is out of the range of the angle a, the rubber is broken. However, in the vibration isolation damper pulley 1 according to the present invention, as shown in FIG. 8B, since the friction cage 12 is in contact with the friction washer 23, the torque of the torque input to the hub 10 So that the torque input to the hub 10 is transmitted from the friction cage 12 to the friction washer 23 to suppress the torsion of the rubber.

Referring to FIG. 10, there is shown a graph showing the relationship between the torque input to the vibration isolation damper pulley according to the present invention and the twist angle. In the vibration isolation damper pulley according to the present invention, A torque for increasing the twist angle by the friction between the friction cage 12 and the friction washer 23 is required from the moment when the friction cage 12 comes into contact with the friction cage 12. That is, when the angle exceeds the angle a, friction between the dotted line and the solid line is generated, and accordingly, a corresponding amount of torque is required. This means a reduction in the torsion angle when the same torque is inputted in comparison with the conventional technique. For example, if a torque of T (shaded region) is input in FIG. 4 and the twist angle is b, if the same torque T (hatched region) as in FIG. 10 to FIG. 4 is input, c.

In the vibration isolation damper pulley 100 according to the related art, if the torque applied to the hub 10 is the same because the areas of the shaded regions in FIGS. 4 and 10 are the same, the torque is used to increase the twist angle. Thereby increasing the breakage probability of the rubber 130. However, in the vibration isolation damper pulley 1 of the present invention, a part of the torque (see F in Fig. 10) as much as the area indicated by E in Fig. 10 is exhausted by friction between the friction cage 12 and the friction washer 23 , The torsion angle is reduced to suppress twisting, thereby reducing the damage of the rubber.

1: damper pulley 10: hub
11: stopper 12: friction cage
20: pulley part 21: slit
22: washer housing 23: friction washer
100: damper pulley 110: hub
111: Spotter 120: Pulley portion
121: slit 130: rubber

Claims (6)

A hub which is installed at the center and into which a rotational force is inputted; a pulley portion provided on the outside of the hub and provided with a belt; and a rubber installed between the hub and the pulley portion, In an insulation damper pulley,
And a torsion angle reducing means for reducing an angle of the torsion angle by frictionally abutting a part of the torque input to the hub by frictional contact with each other when the twist angle between the hub and the pulley portion exceeds a predetermined angle, Respectively, of the vibration isolating damper pulleys. The method according to claim 1,
Wherein the twist angle reducing means comprises:
A friction cage installed at one side of the hub,
And a friction washer provided on one side of the pulley portion so as to be in frictional contact with an end of the friction cage when the twist angle exceeds a predetermined angle. 3. The method of claim 2,
Wherein the friction cage is installed at an end of a stopper protruding to one side of the hub so as to be located inside the slit formed along the circumferential direction of the pulley portion in the pulley portion. The method of claim 3,
Wherein the friction washer is installed on the inner surface of the washer housing formed along the circumferential direction of the pulley portion from the end of the slit. 5. The method of claim 4,
Wherein the washer housing is formed in such a shape that one end is opened and the other end is closed,
Wherein the friction washer is fixed to the inside of the washer housing. 3. The method of claim 2,
Wherein when the twist angle of the hub and the pulley portion reaches a maximum normal range angle, the friction cage is installed to start contacting the friction washer.
KR1020150125164A 2015-09-03 2015-09-03 Isolation damper pulley KR101755835B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150125164A KR101755835B1 (en) 2015-09-03 2015-09-03 Isolation damper pulley

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150125164A KR101755835B1 (en) 2015-09-03 2015-09-03 Isolation damper pulley

Publications (2)

Publication Number Publication Date
KR20170028208A true KR20170028208A (en) 2017-03-13
KR101755835B1 KR101755835B1 (en) 2017-07-07

Family

ID=58411818

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150125164A KR101755835B1 (en) 2015-09-03 2015-09-03 Isolation damper pulley

Country Status (1)

Country Link
KR (1) KR101755835B1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070003346A (en) 2005-07-01 2007-01-05 현대자동차주식회사 Endurance wear sensing damper pulley

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5771949B2 (en) * 2010-10-29 2015-09-02 株式会社ジェイテクト Isolation damper pulley

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070003346A (en) 2005-07-01 2007-01-05 현대자동차주식회사 Endurance wear sensing damper pulley

Also Published As

Publication number Publication date
KR101755835B1 (en) 2017-07-07

Similar Documents

Publication Publication Date Title
JP3578687B2 (en) A device for transmitting torque from an internal combustion engine to a compressor
JP5223999B2 (en) Torsional vibration damping device
EP2558749B1 (en) Isolator
JP5914416B2 (en) Pulley structure
WO2011126916A1 (en) Isolator
CN104653702A (en) Double-mass flywheel
US8888602B2 (en) Electric tools
KR101755835B1 (en) Isolation damper pulley
JP2008019959A (en) Spring clutch
KR100494886B1 (en) Apparatus for damping vibrations
JP6167839B2 (en) Damper device for vehicle
KR101130912B1 (en) Friction clutch, in particular for motor vehicle, comprising multifunctional means
JP2002340094A (en) Rotary damper
JP2019065904A (en) Pulley with isolation
JP6513512B2 (en) Rotational fluctuation absorbing damper
KR101377367B1 (en) Coilless clutch device used in air conditioner compressor for vehicle
KR200361418Y1 (en) Center bearing fixing structure of propeller shaft
JP2000304096A (en) Torque variation absorbing device
JP2007205379A (en) Pulley
KR102126283B1 (en) Belt Mounting Structure
JP6043492B2 (en) Transmission shaft damper
JPH08121187A (en) Centrifugal pendulum type vibration damper
KR101614694B1 (en) A torque ring having a preventing structure of fatigue failure in a coilless cluch for a compressor
KR200455076Y1 (en) Power window motor device with improved shock-absorbing structure
KR101567343B1 (en) A coilless cluch for a compressor

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant