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WO2003038307A1 - Tendeur de chaine - Google Patents

Tendeur de chaine

Info

Publication number
WO2003038307A1
WO2003038307A1 PCT/JP2002/011481 JP0211481W WO03038307A1 WO 2003038307 A1 WO2003038307 A1 WO 2003038307A1 JP 0211481 W JP0211481 W JP 0211481W WO 03038307 A1 WO03038307 A1 WO 03038307A1
Authority
WO
WIPO (PCT)
Prior art keywords
plunger
housing
chain tensioner
mounting hole
chain
Prior art date
Application number
PCT/JP2002/011481
Other languages
English (en)
Japanese (ja)
Inventor
Tomoyoshi Izutsu
Seiji Sato
Shigeyoshi Ito
Hiroshi Munetoki
Original Assignee
Ntn Corporation
Daihatsu Motor 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 Corporation, Daihatsu Motor Co., Ltd. filed Critical Ntn Corporation
Publication of WO2003038307A1 publication Critical patent/WO2003038307A1/fr

Links

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
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H7/0848—Means for varying tension of belts, ropes, or chains with means for impeding reverse motion
    • 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
    • F16H2007/0802—Actuators for final output members
    • F16H2007/0806—Compression coil springs
    • 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
    • F16H2007/0802—Actuators for final output members
    • F16H2007/0812—Fluid pressure
    • 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
    • F16H7/0848—Means for varying tension of belts, ropes, or chains with means for impeding reverse motion
    • F16H2007/0853—Ratchets
    • 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
    • F16H7/0848—Means for varying tension of belts, ropes, or chains with means for impeding reverse motion
    • F16H2007/0853—Ratchets
    • F16H2007/0855—Ratchets comprising a clip member engaging with the rack teeth
    • 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
    • F16H7/0848—Means for varying tension of belts, ropes, or chains with means for impeding reverse motion
    • F16H2007/0859—Check valves

Definitions

  • the present invention relates to a chain transmission, and more particularly to a chain tensioner for maintaining a constant tension of a chain of a camshaft driving chain transmission.
  • a plunger is installed in a threading chamber formed in the housing, and the plunger is mounted on the outer ring.
  • the housing is provided with an oil supply passage communicating with a pressure chamber formed at the back of the plunger, and is provided to the plunger by hydraulic oil supplied from the oil supply passage into the pressure chamber.
  • a device in which the pushing force is buffered is conventionally known.
  • the chain tensioner having the above configuration includes an exterior type and an interior type (see U.S. Pat. No. 5,658,212 and Japanese Patent No. 3,243,226).
  • a plurality of mounting pieces 74 are formed on the outer periphery of the housing 73, and each mounting piece 74 is tightened with a port 75. Therefore, it is fixed to the engine block 61.
  • the plunger is used for both the exterior and interior chain tensioners.
  • the chain guide 64 which can swing about the shaft 63, is pressed by the tube 76 to tension the cam shaft drive chain 65.
  • An object of the present invention is to facilitate the assembling and weight reduction of a chain tensioner, and to increase the degree of freedom in design. Means for solving the problem
  • a movable plunger and a spring that presses the plunger outward are incorporated into a cylinder chamber formed in a housing.
  • a chain tensioner that is provided with an oil supply passage communicating with a pressure chamber formed at the back of the plunger, and that buffers a pushing force applied to the plunger by hydraulic oil supplied from the oil supply passage into the pressure chamber.
  • the outer diameter of the tensioner is made cylindrical with almost the same diameter over the entire length in the axial direction, and the housing is inserted into a mounting hole formed in the tensioner mounting target to be assembled.
  • the chain tensioner can be assembled by forming a mounting hole in the tensioner mounting target and inserting a housing into the mounting hole, so that the mounting is easy, and Since it is not necessary to form a mounting flange and mounting piece on the housing, it is possible to reduce the weight of the chain tensioner, and it is not necessary to secure a large space when assembling the chain tensioner.
  • the degree of freedom in design around can be increased.
  • the oil supply passage is formed of a through-hole penetrating the closed end wall of the cylinder chamber in the axial direction
  • an oil passage communicating with the oil supply passage is provided at the closed end of the mounting hole.
  • the housing moves in the direction of coming out of the mounting hole due to the pressure of the hydraulic oil supplied to the oil passage due to the area difference between the outer surface and the inner surface of the closed end wall of the cylinder chamber, and conversely, the plunger moves to the bottom of the cylinder chamber. There is a risk of being pushed toward.
  • the moving amount of the housing that is, the pushing amount of the plunger is large, the housing falls off from the mounting hole.
  • a female screw is provided on the inner periphery of the opening of the cylinder chamber as a retracting restricting device for the plunger, which can prevent the plunger from being pushed in by a predetermined amount or more by providing retraction restricting means.
  • a male thread to be engaged is formed, and a thread flank of the female thread and the male thread is formed in a sawtooth shape in which a pressure-side flank receiving an axial pushing force applied to the plunger is larger than a flank angle of a play-side flank.
  • a clip receiving groove is formed in the inner periphery of the opening of the cylinder chamber, and a radially elastically deformable ring portion provided on the register clip is received in the clip receiving groove.
  • a plurality of circumferential grooves which are fastened by the ring portion are provided on the outer circumference of the plunger at intervals in the axial direction, and a tapered surface on the inner circumference of each circumferential groove for expanding the diameter of the ring portion when the plunger advances. And an engagement surface that engages with the ring portion when the plunger retreats and prevents the plunger from retreating.
  • the housing may be worn due to contact with the inner periphery of the mounting hole when the housing is moved.
  • the outer peripheral surface of the housing is hardened.
  • a carbonitriding process or a plating process can be employed as the hardening process.
  • the chain tensioner by providing a retaining means for retaining the housing between the housing and the mounting hole, the chain tensioner can be reliably prevented from falling off.
  • the retaining means comprises a structure in which a retaining ring is attached so as to straddle an engaging groove formed on the outer periphery of the housing and an engaging groove provided on the inner periphery of the mounting hole. It is possible to adopt a structure in which the elastic force of the spring is made larger than the pressing force by which the hydraulic pressure pushes the housing due to the area difference between the outer surface and the inner surface of the closed end wall of the cylinder chamber.
  • FIG. 1 is a longitudinal sectional front view showing a first embodiment of a chain tensioner according to the present invention.
  • FIG. 2 is a cross-sectional view showing, in an enlarged manner, a thread engagement portion between a female screw and a male screw of the chain tensioner shown in FIG. It is.
  • FIG. 3 is a longitudinal sectional front view showing a second embodiment of the chain tensioner according to the present invention.
  • FIG. 4 is a longitudinal sectional front view showing a third embodiment of the chain tensioner according to the present invention.
  • FIG. 5 (I) is a longitudinal sectional front view showing a fourth embodiment of a chain tensioner according to the present invention, and (II) is a right side view of (I).
  • FIG. 1 is a longitudinal sectional front view showing a first embodiment of a chain tensioner according to the present invention.
  • FIG. 2 is a cross-sectional view showing, in an enlarged manner, a thread engagement portion between a female screw and a male screw of the chain tensioner shown
  • FIG. 6 (I) is a cross-sectional view showing an enlarged part of the backward movement restricting mechanism of FIG. 5 (I), and FIG. 6 (II) is a cross-sectional view showing the operation state of (I).
  • FIG. 7 is a vertical sectional front view showing a fifth embodiment of a chain tensioner according to the present invention.
  • FIG. 8 is a vertical sectional front view showing a sixth embodiment of the chain tensioner according to the present invention.
  • FIG. 9 is a sectional view showing another example of assembling the chain tensioner.
  • FIG. 10 is a partially cutaway front view showing an example of assembling a conventional chain tensioner.
  • FIG. 11 is a partially cutaway front view showing another example of assembling a conventional chain tensioner.
  • FIG. 1 shows a first embodiment of a chain tensioner A according to the present invention.
  • a housing 1 is provided with a bottomed cylinder chamber 2 having a cylindrical surface 3 and an outer diameter which is the same throughout the entire axial direction.
  • a plunger 4 is incorporated in the cylinder chamber 2.
  • the plunger 4 is provided with a spring storage hole 5 that opens at the rear end face, and a spring 6 incorporated between the closed end of the spring storage hole 5 and the bottom surface of the cylinder chamber 2 presses the plunger 4 outward.
  • An oil supply passage 8 communicating with a pressure chamber 7 formed at the back of the plunger 4 is formed in the closed end wall of the cylinder chamber 2, and the hydraulic oil in the pressure chamber 7 is supplied to the oil outlet side of the oil supply passage 8.
  • a check valve 9 for preventing backflow to the passage 8 side is provided.
  • the retraction control mechanism 10 is composed of a female screw 11 provided on the inner periphery of the opening of the cylinder chamber 2 and a male screw 12 formed on the outer periphery of the plunger 4 and threadedly engaging with the female screw 11. .
  • the threads of the internal thread 11 and the external thread 12 are such that the flank angle of the pressure side flank 14 receiving the axial pushing force applied to the plunger 4 is greater than the flank angle of the play side flank 13 It has a large serrated shape, and a screw clearance 15 is formed between the screw engaging portions of the serrated thread, so that the plunger 4 can retreat within the clearance amount ⁇ of the screw clearance 15. . Further, the lead angle at which the plunger 4 rotates and moves in the axial direction by the elasticity of the spring 6 is formed in the serrated thread.
  • a nut member 16 having the female screw 11 on the inner circumference is fitted into a fitting hole 17 formed on the inner circumference of the opening of the cylinder chamber 2.
  • the nut member 16 is fixed by caulking the open end of the nut inward, the female screw 11 may be formed directly on the inner periphery of the open end of the cylinder chamber 2. Good.
  • the chain tensioner ⁇ ⁇ having the above configuration is mounted on the tensioner mounting target ⁇ .
  • the engine cover shown in FIG. 10 is shown here as the tensioner mounting target B.
  • a mounting hole 20 having a closed end is formed in the tensioner mounting object B, and the housing 1 of the chain tensioner A is fitted into the mounting hole 20.
  • An oil passage 21 communicating with the oil supply passage 8 of the chain tensioner A is formed in the shaft.
  • the hydraulic oil in the pressure chamber 7 is formed between the sliding surfaces of the housing 1 and the plunger 4 and between the screw engaging portions of the female screw 11 and the male screw 12. The thread leaks from the female screw clearance 15 to the outside, and the plunger 4 retreats slowly until the elasticity of the spring 6 and the pushing force are balanced.
  • the tensioner Since the rear end of the housing 1 is inserted into the mounting hole 20, the tension of the chain tensioner A is lower than that of a conventional chain tensioner in which the housing is fixed by tightening the port. Easy to assemble. In addition, since it is not necessary to form a mounting flange and mounting piece on the housing, it is possible to reduce the weight, and it is not necessary to secure a large space when assembling the chain tensioner A. The degree of freedom can be increased.
  • the chain tensioner A is an assembly in which the rear end of the housing 1 is simply inserted into the mounting hole 20 formed in the tensioner mounting object B, and furthermore, the chain tensioner A is mounted on the closed end wall of the cylinder chamber 2 in the housing 1.
  • the plunger 4 is pushed in within the range of the screw clearance 15 formed between the screw engagement portions of the female screw 11 and the male screw 12 shown in FIG. Stops when pressure side flank 14 at close contact.
  • the size of the screw clearance 15 is smaller than the depth of the mounting hole 20. For this reason, even if the housing 1 moves outward due to the supply pressure of the hydraulic oil, the amount of movement is within the range of the screw clearance 15, so that the housing 1 does not fall out of the mounting hole 20.
  • FIG. 3 shows a second embodiment of the chain tensioner A according to the present invention.
  • the chain tensioner A shown in the first embodiment is different from the chain tensioner A shown in the first embodiment in that a valve seat 9 a constituting a check valve 9 for preventing a backflow of hydraulic oil is formed integrally with the housing 1. Is different.
  • the manufacturing cost can be further reduced by integrally forming the valve seat 9a with the housing 1.
  • the inner peripheral surface of the housing 1 including the valve sheet 9a may be subjected to a hardening treatment.
  • FIG. 4 shows a third embodiment of the chain tensioner A according to the present invention.
  • the chain tensioner A shown in this embodiment is located between the housing 1 and the mounting hole 20. This is different from the channel A shown in the first embodiment in that a detent mechanism 30 for detent is provided.
  • the detent mechanism 30 has a detent pin 31 protruding from the outer peripheral portion of the rear end face of the housing 1 and the detent pin 31 is formed at the closed end of the mounting hole 20.
  • the housing 1 is prevented from rotating by inserting it into the pin hole 32.
  • the provision of the detent mechanism 30 for preventing the housing 1 from rotating prevents the housing 1 from rotating together with the plunger 4 when the plunger 4 moves in the axial direction while rotating.
  • the function of the chain tensioner A can be reliably exhibited.
  • rotation of the housing 1 with respect to the mounting hole 20 can be restricted, and wear on the contact surface between the housing 1 and the mounting hole 20 can be suppressed.
  • FIG. 5 and 6 show a fourth embodiment of a chain tensioner A according to the present invention.
  • the chain tensioner A shown in this embodiment is different from the chain tensioner A of the first embodiment described above with reference to FIG. 1 in the configuration of a backward movement restricting mechanism 10 that regulates the backward movement of the plunger 4.
  • a clip receiving groove 40 is formed on the inner periphery of the opening of the cylinder chamber 2, and the register clip 41 is provided in the clip receiving groove 40.
  • the plunger 4 accommodates a ring portion 41 a that can be elastically deformed in the radial direction, and a plurality of circumferential grooves 42 tightened by the ring portion 41 a in the outer peripheral portion of the plunger 4.
  • the tapered surface 42a with a smaller diameter toward the tip of the plunger 4 is provided on the inner periphery of each circumferential groove 42 at an interval, and the engagement surface 42b at the small diameter side end of the tapered surface 42a. Are provided.
  • the taper surface 42 a allows the plunger 4 to move forward by the action of expanding the diameter of the ring portion 41 a of the register clip 41.
  • the plunger is engaged by the engagement of the engagement surface 42b with the ring portion 41a of the register clip 41, which stops by contacting the rear wall 40a of the clip receiving groove 40. 4 to control the retreat.
  • the hydraulic oil supplied to the oil passage 21 is similar to the chain tensioner A shown in the first embodiment.
  • the pressure may cause the housing 1 to move in the direction of coming out of the mounting hole 20. At that time, the outer circumference of the housing 1 is easily worn by contact with the inner circumference of the mounting hole 20.
  • the outer periphery of the housing 1 is subjected to a hardening treatment to increase the hardness.
  • a hardening treatment quenching treatment such as carbonitriding treatment or plating treatment can be adopted.
  • FIG. 7 shows a fifth embodiment of a chain tensioner A according to the present invention.
  • the chain tensioner A of this embodiment and the chain tensioner A of the first embodiment shown in FIG. 1 are provided with a retaining mechanism 50 for preventing the housing 1 from coming out of the mounting hole 20. Only differ.
  • the retaining ring 50 is attached to the retaining mechanism 50 so as to straddle the engaging groove 51 formed on the outer periphery of the housing 1 and the engaging groove 52 provided on the inner periphery of the mounting hole 20. ing.
  • the above-described retaining mechanism 50 may be provided also in the chain tensioner A shown in FIGS.
  • the attachment of the chain tensioner A can be stabilized, and the hardening process for the housing 1 can be omitted.
  • the cost can be reduced as compared with the chain tensioner A provided.
  • the retaining mechanism 50 is not limited to the above configuration.
  • it due to the difference in area between the outer surface a and the inner surface b of the closed end wall of the cylinder chamber 1 due to the difference in area between the elastic force of the spring 6 of the chain tensioner A shown in FIGS. Yes, it may be made larger than the pressing force.
  • FIG. 8 shows a sixth embodiment of the chain tensioner A according to the present invention.
  • the chain tensioner A of this embodiment differs from the chain tensioner A of the fourth embodiment shown in FIG. 5 only in the outer diameter of the eight housing 1, the configuration of the oil supply passage 8, and the configuration of the mounting hole 20. You. Therefore, the same components as those of the chain tensioner A shown in the fourth embodiment are denoted by the same reference numerals, and description thereof will be omitted.
  • the outside of the rear end of the housing 1 The diameter is slightly larger than the outer diameter of the front end, and an annular groove 22 a at the outer periphery of the rear end at a position corresponding to the oil passage 21 formed in the tensioner mounting object B, and the rear end side A ring groove 22b is provided on the bottom surface of the annular groove 22a.
  • An oil supply passage 8 communicating with the pressure chamber 7 is formed on the bottom surface of the annular groove 22a to prevent leakage of hydraulic oil into the ring groove 22b. Is provided.
  • the mounting hole 20 formed in the tensioner mounting object B is used as a through hole, and a retaining ring 23 is mounted on the inner periphery of the mounting hole 20, and the housing 1 is mounted on the mounting hole 20 with the retaining ring 23.
  • the insertion amount is regulated.
  • an oil supply passage 8 is opened on the bottom surface of an annular groove 22 a formed in the outer periphery of the rear end of the housing 1, and the oil passage 21 formed in the tensioner mounting object B is moved from the oil passage 21.
  • the inner diameter of the mounting hole 20, which is a through hole, is made larger than the maximum diameter of the chain tensioner, so that the chain tensioner can be inserted from the outside of the installation target B (for example, the outside of the engine cover). By doing so, installation can be facilitated.
  • a female screw is formed on the inner peripheral surface of the mounting hole, and a housing screw that is screwed into the female screw is inserted to make the housing 1. In addition to restricting the amount of oil introduced, leakage of hydraulic oil may be prevented.
  • FIG. 9 shows another example of the attachment of the chain tensioner according to the present invention.
  • the chain guide 64 that presses the chain 65 shown in FIG. 10 is targeted for mounting the tensioner, and the chain guide 64 is provided with the mounting hole 24, the reservoir chamber 25, and the reservoir chamber 25. And an oil passage 26 for communicating the mounting hole 24 with the mounting hole 24.
  • the housing 1 of the chain tensioner A is inserted into the mounting hole 24, and the tip of the plunger 4 of the chain tensioner A is attached to an engine cover (not shown).
  • the chain guide 64 is pressed against the provided contact portion 60 a in a direction in which the chain is tensioned by the elasticity of the spring 6.
  • the mounting of the chain tensioner can be performed by forming the mounting hole in the tensioner mounting object and inserting the housing into the mounting hole. Assembly can be facilitated as compared to a chain tensioner that is fixed.
  • the mounting Since it is not necessary to form the flange and the mounting piece, the weight can be reduced, the mounting space can be reduced, and the design flexibility can be increased.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

Un piston (4) et un ressort (6) qui pousse vers l'extérieur le piston (4) sont assemblés dans une chambre (2) de cylindre formée dans un corps (1). Le corps (1) comporte un passage (8) pour l'alimentation en huile qui communique avec une chambre (7) de pression qui est définie sous le piston (4). Le diamètre extérieur du corps (1) a sensiblement le même diamètre sur toute sa longueur axiale et le corps (1) est inséré dans un orifice d'installation (20) qui est formé dans un objet (B) sur lequel est installé un tendeur, de telle sorte qu'un tendeur de chaîne se trouve dans un état assemblé. Le montage du tendeur de chaîne est ainsi facilité.
PCT/JP2002/011481 2001-11-02 2002-11-01 Tendeur de chaine WO2003038307A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2001337332 2001-11-02
JP2001-337332 2001-11-02
JP2002-310893 2002-10-25
JP2002310893A JP2003202059A (ja) 2001-11-02 2002-10-25 チェーンテンショナ

Publications (1)

Publication Number Publication Date
WO2003038307A1 true WO2003038307A1 (fr) 2003-05-08

Family

ID=26624302

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2002/011481 WO2003038307A1 (fr) 2001-11-02 2002-11-01 Tendeur de chaine

Country Status (2)

Country Link
JP (1) JP2003202059A (fr)
WO (1) WO2003038307A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1510729A3 (fr) * 2003-08-29 2009-10-21 Ntn Corporation Tendeur de chaîne

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4903387B2 (ja) * 2005-01-04 2012-03-28 Ｎｔｎ株式会社 補機駆動ベルト用オートテンショナ
JP4677291B2 (ja) * 2005-06-13 2011-04-27 ボルグワーナー・モールステック・ジャパン株式会社 テンショナ
JP4917789B2 (ja) * 2005-10-03 2012-04-18 Ｎｔｎ株式会社 オートテンショナ
JP4927638B2 (ja) * 2007-05-01 2012-05-09 Ｎｔｎ株式会社 チェーンテンショナ
JP4933949B2 (ja) * 2007-05-01 2012-05-16 Ｎｔｎ株式会社 チェーンテンショナ
JP5244265B2 (ja) * 2008-07-22 2013-07-24 ボーグワーナー インコーポレーテッド クリップタイプテンショナ
JP5189455B2 (ja) * 2008-10-10 2013-04-24 Ｎｔｎ株式会社 チェーンテンショナおよびその組立方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0550131U (ja) * 1991-12-13 1993-07-02 光洋精工株式会社 ピ ン
JPH0727191A (ja) * 1993-07-07 1995-01-27 Ntn Corp 油圧式オートテンショナ
JPH084860A (ja) * 1994-06-23 1996-01-12 Nippon Seiko Kk オートテンショナ
US5509750A (en) * 1993-12-29 1996-04-23 Teleflex Incorporated Rotatable coupling for core element
JPH1030695A (ja) * 1996-07-18 1998-02-03 Ntn Corp チェーンテンショナ
JP2001146946A (ja) * 1999-11-19 2001-05-29 Ntn Corp チェーンテンショナ

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0550131U (ja) * 1991-12-13 1993-07-02 光洋精工株式会社 ピ ン
JPH0727191A (ja) * 1993-07-07 1995-01-27 Ntn Corp 油圧式オートテンショナ
US5509750A (en) * 1993-12-29 1996-04-23 Teleflex Incorporated Rotatable coupling for core element
JPH084860A (ja) * 1994-06-23 1996-01-12 Nippon Seiko Kk オートテンショナ
JPH1030695A (ja) * 1996-07-18 1998-02-03 Ntn Corp チェーンテンショナ
JP2001146946A (ja) * 1999-11-19 2001-05-29 Ntn Corp チェーンテンショナ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1510729A3 (fr) * 2003-08-29 2009-10-21 Ntn Corporation Tendeur de chaîne

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