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WO2017006934A1 - Dispositif de transmission de puissance - Google Patents

Dispositif de transmission de puissance Download PDF

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Publication number
WO2017006934A1
WO2017006934A1 PCT/JP2016/069916 JP2016069916W WO2017006934A1 WO 2017006934 A1 WO2017006934 A1 WO 2017006934A1 JP 2016069916 W JP2016069916 W JP 2016069916W WO 2017006934 A1 WO2017006934 A1 WO 2017006934A1
Authority
WO
WIPO (PCT)
Prior art keywords
coating
elastic member
pulley
friction wheel
friction
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2016/069916
Other languages
English (en)
Japanese (ja)
Inventor
中尾　吾朗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Corp
NTN Toyo Bearing Co Ltd
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 NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Publication of WO2017006934A1 publication Critical patent/WO2017006934A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F16H13/00—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members
    • F16H13/02—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members without members having orbital motion
    • F16H13/04—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members without members having orbital motion with balls or with rollers acting in a similar manner
    • 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

Definitions

  • the present invention relates to a power transmission device that transmits rotation of a driving pulley to a driven pulley by frictional contact of a friction wheel.
  • a generator with motor function (Integrated Starter Generator) that stops the engine when the vehicle is stopped and starts the engine instantly when the vehicle is started by depressing the accelerator pedal is installed.
  • ISG Integrated Starter Generator
  • the rotation of the crankshaft of the engine is normally transmitted to an auxiliary device such as a water pump or a generator with a motor function by a belt transmission. Further, when the engine is started, the power of the generator with a motor function is transmitted to the crankshaft.
  • the water pump In a power transmission device for an engine that employs a belt transmission device as described above, the water pump always rotates as the crankshaft rotates. For this reason, even when it is not necessary to rotate the water pump, such as when the engine is warming up, or when the engine is quickly reached the maximum efficiency, the water pump rotates, resulting in large torque loss and fuel consumption. There is a problem that there are many.
  • Patent Document 1 the friction between a crankshaft pulley as a drive pulley attached to the end of the crankshaft and a friction pulley as a driven pulley attached to a rotating shaft of an auxiliary machine is disclosed.
  • a wheel is provided so that the friction wheel can be brought into contact with and separated from the crankshaft pulley and the friction pulley. Power is transmitted from the crankshaft pulley to the friction pulley by contact rotation.
  • the friction wheel is displaced to the separation position to cut off the power transmission from the crankshaft pulley to the friction pulley.
  • the stress concentration at the contact portion can be relaxed by elastic deformation, and the frictional force can be improved by increasing the contact area. Is very difficult to adjust because it accelerates and transmission efficiency decreases.
  • a high-strength elastic member has excellent wear resistance, it has a low friction coefficient, and even if the friction coefficient is improved by coating, peeling tends to occur and there is a problem in durability. Therefore, an elastic member having high rigidity and a high friction coefficient is required, but there is no elastic member having such characteristics, and improvement of wear resistance and torque transmission efficiency at the contact portion remains as problems. .
  • An object of the present invention is to provide a power transmission device capable of suppressing a decrease in durability due to wear and ensuring high torque transmission efficiency.
  • a friction wheel is provided between the driving pulley and the driven pulley, and the friction wheel is elastically contacted with both the driving pulley and the driven pulley through a film made of an elastic member.
  • the coating includes a first coating made of a high-strength elastic member and a second coating made of a high friction coefficient elastic member. It consists of two types, and adopted a configuration in which the first coating and the second coating are aligned in the axial direction.
  • the coating made of an elastic member is made of a high-strength elastic member by being juxtaposed in the axial direction as two types of a first coating made of a high-strength elastic member and a second coating made of a high-friction coefficient elastic member.
  • the first coating can support the contact load at the contact portion between the driving pulley and the friction wheel and the contact load at the contact portion between the driven pulley and the friction wheel, and the second coating made of a high friction coefficient elastic member can provide high transmission torque. Can be secured.
  • the first coating is made of a high-strength elastic member, each of the first coating and the second coating is not excessively elastically deformed, and the durability of each coating of the first coating and the second coating is reduced. Can be suppressed.
  • the second coating has a larger diameter than the first coating.
  • the amount of elastic deformation of the second coating made of the high friction coefficient elastic member is increased, the contact pressure is increased, and the torque transmission efficiency can be further increased.
  • strength elastic member reduces, and can reduce a durable fall more effectively.
  • the second coating has a larger diameter than the first coating
  • the second coating made of the high friction coefficient elastic member is in the axial direction.
  • the elastic contact is made uniformly over the entire length, and the torque transmission efficiency can be further increased.
  • the elastic contact force of the first coating can be further reduced.
  • hydrogenated nitrile rubber can be used as the high-strength elastic member.
  • An example of the high friction coefficient elastic member is silicon rubber.
  • the two types of coatings are provided in parallel in the axial direction.
  • the first coating made of an elastic member can support the load at the contact portion between the driving pulley and the friction wheel and the load at the contact portion between the driven pulley and the friction wheel, and the first coating does not deform excessively.
  • High transmission torque can be secured by the second coating film made of the elastic member having a high coefficient of friction in the state where the property is maintained.
  • FIG. Sectional view Schematic which shows embodiment of the power transmission device which concerns on this invention
  • the front view which expands and shows the power transmission part of FIG. Sectional view along line III-III in FIG. Sectional drawing which expands and shows a part of friction wheel shown in FIG. Sectional view showing another example of friction wheel
  • FIG. 1 a crankshaft pulley 12 provided at the shaft end of a crankshaft 11 of an engine 10 is used as a driving pulley, and the rotation of the driving pulley 12 is attached to a rotating shaft 14 a of an auxiliary machine 14 via a friction wheel 13.
  • 1 shows a power transmission device for transmitting power to a driven pulley 15 comprising a friction pulley.
  • the friction wheel 13 can be brought into contact with and separated from the drive pulley 12 and the driven pulley 15, and the contact position and the separation position are set by the actuator A as a displacement device. It is designed to be displaced.
  • the actuator A the cam actuator using the eccentric cam described in JP-T-2008-506342 can be adopted. Therefore, the details of the actuator A are omitted here, and the friction wheel 13 is connected to the drive pulley 12 and It is shown in a state where it is displaced to a contact position that contacts both of the driven pulleys 15.
  • the friction wheel 13 includes a cylindrical contact wheel 13a, a disk portion 13b provided on the inner periphery of the contact wheel 13a, and an inner periphery of the disk portion 13b.
  • the support shaft 16 is inserted into the boss portion 13c, and the friction wheel 13 is rotated about the support shaft 16 by a rolling bearing 17 incorporated between the support shaft 16 and the boss portion 13c. It is supported freely.
  • a pair of first coatings 18 and a second coating 19 between the pair of first coatings 18 are arranged on the outer diameter surface of the contact wheel 13a of the friction wheel 13 in the axial direction.
  • the first coating 18 is made of a high-strength elastic member, while the second coating 19 is made of a high friction coefficient elastic member.
  • hydrogenated nitrile rubber is adopted as the high-strength elastic member
  • silicon rubber is adopted as the high-friction coefficient elastic member.
  • the friction coefficient of the high-friction coefficient elastic member is preferably 1.0 or more for metal, and the strength of the high-strength elastic member is preferably Hs85 or more for rubber strength.
  • Each of the first coating 18 and the second coating 19 may be integrated with the contact wheel 13a through a vulcanization adhesion means, or may be molded and integrated on the outer diameter surface of the contact wheel 13a. Good. In the natural state in which each of the first coating 18 and the second coating 19 is integrated with the contact wheel 13a, the outer diameter of the second coating 19 is larger than the outer diameter of the first coating 18, as shown in FIG. It is the diameter.
  • first coating 18 and the second coating 19 are elastically brought into contact with each other at the contact portion with respect to the drive pulley 12 and the contact portion with respect to the driven pulley 15 to have the same thickness.
  • the contact pressure and the contact pressure with respect to the driven pulley 15 are maintained, and rotational torque is transmitted.
  • the friction wheel 13 rotates in contact with the rotation of the drive pulley 12 and transmits the rotation of the drive pulley 12 to the driven pulley 15.
  • a first coating 18 made of a high-strength elastic member and a second coating 19 made of a high friction coefficient elastic member are provided in parallel in the axial direction on the outer diameter surface of the friction wheel 13, The first coating 18 and the second coating 19 are brought into elastic contact with the driving pulley 12 and the driven pulley 15 facing the friction wheel 13, respectively, so that the driving pulley 12 and the friction wheel are formed by the first coating 18 made of a high-strength elastic member.
  • the contact load at the contact portion 13 and the contact load at the contact portion between the driven pulley 15 and the friction wheel 13 are supported, and a high transmission torque is secured by the second coating 19 made of a high friction coefficient elastic member.
  • first coating 18 is made of a high-strength elastic member, each of the first coating 18 and the second coating 19 is not excessively elastically deformed, and a decrease in durability can be suppressed.
  • the second coating 19 since the second coating 19 has a larger diameter than the first coating 18 and a pair of first coatings 18 are provided on both axial sides of the second coating 19, the second coating 19 is a driving pulley. 12 and the outer diameter surface of the driven pulley 15 are in elastic contact uniformly over the entire length in the axial direction. For this reason, compared with the case where the 1st film 18 and the 2nd film 19 are made into the same diameter, the amount of elastic deformation of the 2nd film 19 which consists of a high friction coefficient elastic member is large, and it can be set as efficient torque transmission. it can.
  • the elastic deformation force of the first coating 18 made of a high-strength elastic member is reduced by increasing the amount of elastic deformation of the second coating 19, and the deterioration of durability can be more effectively suppressed.
  • first coatings 18 and one second coating 19 are provided between the first coatings 18 on the outer diameter surface of the friction wheel 13, but the first coating 18 and the second coating 19 are provided.
  • the number of is not limited to this.
  • four first coatings 18 and three second coatings 19 are alternately provided in the axial direction.
  • the first coating 18 and the second coating 19 are provided on the outer diameter surface of the friction wheel 13, but the first coating is applied to the outer diameter surfaces of the drive pulley 12 and the driven pulley 15. 18 and the second coating 19 may be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Friction Gearing (AREA)
  • Pulleys (AREA)

Abstract

Selon l'invention, une roue de friction (13) est agencée entre la poulie d'entraînement (12) et la poulie réceptrice (15). Un premier revêtement (18) constitué d'un élément élastique hautement résistant, et un second revêtement (19) constitué d'un élément élastique à haut coefficient de friction, sont agencés en parallèle dans une direction axiale sur une face de diamètre externe de la roue de friction (13). Le premier revêtement (18) et le second revêtement (19) sont chacun mis en contact de manière élastique et individuelle avec la poulie d'entraînement (12) et la poulie réceptrice (15). Une grande efficacité de transmission de couple est assurée par la déformation élastique du second revêtement (19) constitué de l'élément élastique à haut coefficient de friction.
PCT/JP2016/069916 2015-07-08 2016-07-05 Dispositif de transmission de puissance Ceased WO2017006934A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-136761 2015-07-08
JP2015136761A JP2017020536A (ja) 2015-07-08 2015-07-08 動力伝達装置

Publications (1)

Publication Number Publication Date
WO2017006934A1 true WO2017006934A1 (fr) 2017-01-12

Family

ID=57685658

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/069916 Ceased WO2017006934A1 (fr) 2015-07-08 2016-07-05 Dispositif de transmission de puissance

Country Status (2)

Country Link
JP (1) JP2017020536A (fr)
WO (1) WO2017006934A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52120961A (en) * 1976-04-06 1977-10-11 Yoshitarou Tanaka Method of manufacturing tension pulley for agricultural machine
JPH0518451A (ja) * 1991-05-08 1993-01-26 Ricoh Co Ltd 駆動伝達機構
JPH0674311A (ja) * 1992-08-27 1994-03-15 Ricoh Co Ltd 回転力伝達装置及びその使用方法
JP2005173077A (ja) * 2003-12-10 2005-06-30 Kosaku Ueda 広告器などにおける回転板の回転装置
JP2007231978A (ja) * 2006-02-27 2007-09-13 Mitsuboshi Belting Ltd 歯付ベルトおよびこれに用いる歯部補強材

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52120961A (en) * 1976-04-06 1977-10-11 Yoshitarou Tanaka Method of manufacturing tension pulley for agricultural machine
JPH0518451A (ja) * 1991-05-08 1993-01-26 Ricoh Co Ltd 駆動伝達機構
JPH0674311A (ja) * 1992-08-27 1994-03-15 Ricoh Co Ltd 回転力伝達装置及びその使用方法
JP2005173077A (ja) * 2003-12-10 2005-06-30 Kosaku Ueda 広告器などにおける回転板の回転装置
JP2007231978A (ja) * 2006-02-27 2007-09-13 Mitsuboshi Belting Ltd 歯付ベルトおよびこれに用いる歯部補強材

Also Published As

Publication number Publication date
JP2017020536A (ja) 2017-01-26

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