WO2017159332A1 - 緩衝ストッパ - Google Patents
緩衝ストッパ Download PDFInfo
- Publication number
- WO2017159332A1 WO2017159332A1 PCT/JP2017/007608 JP2017007608W WO2017159332A1 WO 2017159332 A1 WO2017159332 A1 WO 2017159332A1 JP 2017007608 W JP2017007608 W JP 2017007608W WO 2017159332 A1 WO2017159332 A1 WO 2017159332A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- buffer
- peripheral surface
- wear
- buffer stopper
- Prior art date
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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/42—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing
- F16F1/44—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing loaded mainly in compression
-
- 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
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
- F16F1/3828—End stop features or buffering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D3/00—Steering gears
- B62D3/02—Steering gears mechanical
- B62D3/12—Steering gears mechanical of rack-and-pinion type
-
- 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
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/371—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by inserts or auxiliary extension or exterior elements, e.g. for rigidification
- F16F1/3713—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by inserts or auxiliary extension or exterior elements, e.g. for rigidification with external elements passively influencing spring stiffness, e.g. rings or hoops
-
- 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
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/371—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by inserts or auxiliary extension or exterior elements, e.g. for rigidification
- F16F1/3713—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by inserts or auxiliary extension or exterior elements, e.g. for rigidification with external elements passively influencing spring stiffness, e.g. rings or hoops
- F16F1/3716—External elements such as covers or envelopes, that are flexible
-
- 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
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/373—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape
- F16F1/3732—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape having an annular or the like shape, e.g. grommet-type resilient mountings
- F16F1/3735—Multi-part grommet-type resilient mountings
-
- 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
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/08—Vibration-dampers; Shock-absorbers with friction surfaces rectilinearly movable along each other
- F16F7/087—Elastomeric surface effect dampers
-
- 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
- F16F2224/00—Materials; Material properties
- F16F2224/02—Materials; Material properties solids
- F16F2224/025—Elastomers
-
- 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
- F16F2230/00—Purpose; Design features
- F16F2230/0023—Purpose; Design features protective
-
- 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
- F16F2232/00—Nature of movement
- F16F2232/08—Linear
Definitions
- the present invention relates to a buffer stopper attached as a buffer means to an end portion of a steering rack in a vehicle steering device, for example.
- devices such as a steering rack and a rack housing of a vehicle steering device that can collide with each other in the axial direction are provided with a buffer stopper for the purpose of preventing noise and damage due to impact. .
- FIG. 5 shows a state in which a buffer stopper according to the prior art is mounted.
- reference numeral 200 is a housing
- reference numeral 300 is a shaft inserted through the housing 200 so as to be capable of reciprocating in the axial direction.
- the buffer stopper 100 is disposed between the end surface 301a of the diameter-expanded portion 301 of the shaft 300 and the end surface 201a of the flange portion 201 of the housing 200 that faces the shaft 301 in the axial direction, and contacts the end surface 201a on the housing 200 side.
- a buffer body 103 made of a resin material is provided.
- this type of buffer stopper 100 is configured such that the buffer 103 is in contact with the end surface 201a on the housing 200 side in the process in which the shaft 300 reciprocating in the axial direction with respect to the housing 200 reaches its stroke end. And the metal ring 102 in contact with the end surface 301a on the shaft 300 side, the impact is reduced by being compressed and deformed in the axial direction (see, for example, the following patent document).
- the buffering by the buffer stopper 100 is performed by absorbing the kinetic energy due to the mass of the shaft 300 and the moving speed by the reaction force and displacement against the compression of the buffer body 103 made of a rubber elastic body.
- the amount of energy that can be absorbed is expressed as the area of the hatched region between the characteristic line of the buffer 103 and the horizontal axis. Can do. Therefore, in order to increase the amount of energy that can be absorbed, the area of the hatched area in FIG. 6 is increased by increasing the maximum compression displacement amount of the buffer body 103 or increasing the reaction force (spring constant). It is common to do.
- this type of buffer stopper 100 simply increases the volume of the buffer body 103 as a means for increasing the amount of energy that can be absorbed when the allowable space is severely limited due to the structure of the buffer target device such as a steering device. Therefore, it is general to employ a rubber elastic body having a high spring constant for the buffer body 103. However, since there is a limit to the spring constant of the rubber elastic body, it may be difficult to obtain a sufficiently high reaction force, and there is a problem that the amount of energy that can be absorbed cannot be increased sufficiently.
- the shock absorber 103 when the shock absorber 103 is compressed in the axial direction, its outer peripheral surface is brought into contact with the inner peripheral surface 202a of the large diameter cylindrical portion 202 of the housing 200, that is, the diameter accompanying the compression of the shock absorber 103.
- the compression reaction force is secured by restricting the direction expansion deformation.
- the outer periphery of the buffer body 103 is repeatedly slid with the inner peripheral surface 202a of the large-diameter cylindrical portion 202 of the housing 200. Therefore, the transition point P between the linear region on the small displacement side and the non-linear region on the large displacement side in the characteristic line shown in FIG. 6 moves to the large displacement side, and the reaction at this predetermined displacement amount.
- a characteristic change may occur such that the force decreases or the amount of displacement when a predetermined axial load is input increases.
- the present invention has been made in view of the above points, and its technical problem is to provide a buffer stopper capable of increasing the amount of energy that can be absorbed without causing characteristic changes. There is.
- a buffer stopper according to the invention of claim 1 includes an end surface formed on a housing and an end surface formed on a shaft that is axially movable relative to the housing.
- a shock absorber made of a rubber elastic body arranged between the shock absorber and a wear-resistant sheet which is provided so as to surround the outer peripheral surface of the shock absorber and can be brought into contact with the inner peripheral surface of the housing by radial expansion deformation of the shock absorber are provided.
- the buffer stopper according to the invention of claim 2 is characterized in that, in the configuration of claim 1, the wear-resistant sheet is made of a stretchable cloth.
- the buffer body is restrained by the wear-resistant sheet from expansion deformation in the outer diameter direction due to axial compression, so that the compression reaction force increases and the amount of energy that can be absorbed is increased.
- wear on the outer peripheral surface of the buffer due to contact with the inner peripheral surface of the housing is prevented by the wear-resistant sheet, so that deterioration of characteristics is prevented.
- FIG. 1 shows a first embodiment of a buffer stopper according to the present invention.
- reference numeral 1 is a buffer stopper
- 2 is a housing, for example, a rack housing in a vehicle steering device
- 3 is a shaft inserted through the housing 2 so as to be capable of reciprocating in the axial direction, for example, a vehicle steering device.
- This is a steering rack.
- An enlarged diameter portion 31 is formed at the end of the shaft 3.
- a flange portion 21 that faces the end surface 31a of the enlarged diameter portion 31 in the axial direction, and extends from the outer diameter portion toward the end portion of the shaft 3, and has an inner diameter larger than that of the enlarged diameter portion 31 of the shaft 3.
- a cylindrical portion 22 is formed.
- the buffer stopper 1 is extrapolated to the shaft 3 and is disposed between the end surface 21a of the flange portion 21 of the housing 2 facing the enlarged diameter portion 31 side of the shaft 3 and the end surface 31a of the enlarged diameter portion 31 of the shaft 3.
- the buffer stopper 1 includes a metal ring 11 that contacts the end surface 21a of the flange portion 21 of the housing 2, a metal ring 12 that contacts the end surface 31a of the enlarged diameter portion 31 of the shaft 3, and the metal rings 11, 12 and a wear-resistant sheet 14 provided on the outer peripheral surface of the buffer 13.
- the metal rings 11 and 12 in the buffer stopper 1 are manufactured by punching a metal plate, and are formed in a flat washer shape.
- the buffer body 13 in the buffer stopper 1 is formed in a ring shape from a rubber elastic body (rubber material or synthetic resin material having rubber-like elasticity), and is integrally vulcanized and bonded between the metal rings 11 and 12. ing.
- the wear-resistant sheet 14 in the buffer stopper 1 is made of a woven fabric such as a synthetic fiber having excellent wear resistance, and is preferably woven so as to have elasticity such as a knitted fabric or a double weave. And is provided endless in the circumferential direction so as to surround the entire outer peripheral surface of the buffer 13.
- the radial distance between the inner peripheral surface 22a of the large-diameter cylindrical portion 22 of the housing 2 and the outer peripheral surface of the shock absorber 13 is such that the outer peripheral surface of the shaft 3 on which the buffer stopper 1 is extrapolated and the inner peripheral surface of the shock absorber 13. Therefore, the wear-resistant sheet 14 contacts the inner peripheral surface 22a of the large-diameter cylindrical portion 22 of the housing 2 due to radial expansion deformation when the shock absorber 13 is subjected to axial compression. It is possible.
- the buffer body 13 contacts the end surface 21 a of the flange portion 21 of the housing 2. Between the metal ring 11 in contact and the metal ring 12 in contact with the end face 31a of the diameter-expanded portion 31 of the shaft 3, it is compressed and deformed in the axial direction and expanded and deformed in the radial direction. And since the abrasion-resistant sheet
- the stress due to the axial compression of the buffer body 13 is relieved by the radial expansion deformation, that is, as shown in FIG. 3, the spring constant is small at the initial stage of compression with a small amount of displacement (the inclination of the characteristic line is small), The impact between the housing 2 and the shaft 3 can be effectively absorbed.
- the wear-resistant sheet 14 provided on the outer peripheral surface of the buffer body 13 is eventually deformed in the radial direction of the buffer body 13 as shown in FIG. 3, the radial expansion deformation of the buffer body 13 is thereby suppressed, and the stress due to axial compression increases. Therefore, as shown in FIG. 3, when the amount of compressive displacement increases to some extent, the spring The constant increases nonlinearly (the inclination of the characteristic line increases), and the axial relative displacement between the housing 2 and the shaft 3 can be effectively regulated.
- the wear-resistant sheet 14 has elasticity as described above, the radial expansion deformation of the buffer body 13 is suppressed to some extent by being provided so as to surround the entire outer peripheral surface of the buffer body 13. Has an effect. For this reason, the spring constant at the initial stage of compression is slightly higher than the conventional buffer stopper shown by the broken line in FIG. 3 (the inclination of the characteristic line is slightly larger), and accordingly, the characteristic line and the horizontal axis are hatched. This increases the area of the region. Therefore, it has the effect of increasing the amount of energy that can be absorbed by the buffer stopper 1.
- the wear-resistant sheet 14 can prevent the outer peripheral surface of the buffer body 13 from being worn by being brought into pressure contact with the inner peripheral surface 22a of the large-diameter cylindrical portion 22 of the housing 2 while sliding.
- the transition point P between the linear region on the small displacement side and the non-linear region on the large displacement side in the characteristic line shown in FIG. 3 does not move to the large displacement side due to wear of the buffer body 13, Therefore, there is no deterioration in characteristics such as a reduction in reaction force at a predetermined displacement amount or an increase in displacement amount when a predetermined axial load is input.
- the wear-resistant sheet 14 surrounds the entire outer peripheral surface of the shock absorber 13, but, for example, as shown in FIG. 4 in the second embodiment of the shock absorber according to the present invention, You may provide only in an axial direction intermediate part.
- the restraining force of the wear-resistant sheet 14 on the outer peripheral surface of the shock absorber 13 is reduced, so that an increase in the amount of energy that can be absorbed is suppressed, but on the other hand, the spring constant in the initial stage of compression is increased. Can be reduced, that is, the buffering property at the initial stage of compression can be improved. Further, if the buffer body 13 has a certain axial width, even if the buffer body 13 is provided only in the intermediate portion in the axial direction of the buffer body 13, wear of the buffer body 13 can be sufficiently prevented.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Health & Medical Sciences (AREA)
- Child & Adolescent Psychology (AREA)
- Vibration Dampers (AREA)
- Vibration Prevention Devices (AREA)
- Springs (AREA)
Abstract
Description
11,12 金属環
13 緩衝体
14 耐摩耗シート
2 ハウジング
21a 端面
22a 内周面
3 軸
31a 端面
Claims (2)
- ハウジングに形成された端面とこのハウジングに対して軸方向相対移動可能な軸に形成された端面との間に配置されたゴム弾性体からなる緩衝体と、この緩衝体の外周面を包囲するように設けられ、前記緩衝体の径方向拡張変形によって前記ハウジングの内周面に接触可能な耐摩耗シートと、を備えることを特徴とする緩衝ストッパ。
- 耐摩耗シートが伸縮性を有する布からなることを特徴とする請求項1に記載の緩衝ストッパ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201780007254.8A CN108474432B (zh) | 2016-03-14 | 2017-02-28 | 缓冲制动器 |
US16/084,855 US11209064B2 (en) | 2016-03-14 | 2017-02-28 | Buffer stopper |
EP17766335.8A EP3431808B1 (en) | 2016-03-14 | 2017-02-28 | Buffer stopper |
JP2018505781A JP6612427B2 (ja) | 2016-03-14 | 2017-02-28 | 緩衝ストッパ |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016-049278 | 2016-03-14 | ||
JP2016049278 | 2016-03-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017159332A1 true WO2017159332A1 (ja) | 2017-09-21 |
Family
ID=59852102
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2017/007608 WO2017159332A1 (ja) | 2016-03-14 | 2017-02-28 | 緩衝ストッパ |
Country Status (5)
Country | Link |
---|---|
US (1) | US11209064B2 (ja) |
EP (1) | EP3431808B1 (ja) |
JP (1) | JP6612427B2 (ja) |
CN (1) | CN108474432B (ja) |
WO (1) | WO2017159332A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019100371A (ja) * | 2017-11-29 | 2019-06-24 | Nok株式会社 | 緩衝ストッパ |
JP2019173788A (ja) * | 2018-03-27 | 2019-10-10 | Nok株式会社 | 緩衝ストッパ |
JP2020051595A (ja) * | 2018-09-28 | 2020-04-02 | Nok株式会社 | 緩衝ストッパ |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108883896B (zh) * | 2016-04-14 | 2020-08-18 | 三菱电机株式会社 | 电梯用缓冲器及电梯 |
JP2018192955A (ja) * | 2017-05-18 | 2018-12-06 | 株式会社ジェイテクト | ステアリング装置 |
US10988171B2 (en) * | 2019-04-04 | 2021-04-27 | Honda Motor Co., Ltd. | Steering rack stopper |
Citations (4)
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JP2005047341A (ja) * | 2003-07-31 | 2005-02-24 | Koyo Seiko Co Ltd | ステアリング装置 |
JP2008024076A (ja) * | 2006-07-19 | 2008-02-07 | Toyota Motor Corp | ステアリング装置 |
JP2009012663A (ja) * | 2007-07-06 | 2009-01-22 | Nsk Ltd | ラックストロークエンドの衝撃緩和装置 |
JP2014100935A (ja) * | 2012-11-16 | 2014-06-05 | Jtekt Corp | ステアリング装置 |
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US2215743A (en) * | 1938-05-10 | 1940-09-24 | Firestone Tire & Rubber Co | Resilient support |
US2214743A (en) | 1939-06-17 | 1940-09-17 | United Shoe Machinery Corp | Cutting die |
BE514834A (ja) * | 1951-11-02 | |||
US2763379A (en) * | 1954-04-09 | 1956-09-18 | Miner Inc W H | Rubber shock absorbing mechanisms for railway draft riggings |
US2854149A (en) * | 1955-08-10 | 1958-09-30 | Miner Inc W H | Draft gears for railway draft riggings |
US3486396A (en) * | 1967-01-20 | 1969-12-30 | Honda Gijutsu Kenkyusho Kk | Steering apparatus for motor car |
JP3231959B2 (ja) | 1994-11-07 | 2001-11-26 | 本田技研工業株式会社 | ステアリング機構用ストロークエンド緩衝装置 |
US6427965B1 (en) * | 2000-11-28 | 2002-08-06 | Mccracken Ronald G. | Shock and vibration damping pad and system |
JP2002209975A (ja) * | 2001-01-19 | 2002-07-30 | Daikyo Seiko Ltd | 医薬バイアル用ラミネートゴム栓 |
AT503699B1 (de) | 2006-06-13 | 2008-06-15 | Fulterer Gmbh | Dämpfer für möbel, insbesondere für ausziehführungen von möbeln |
CN102052462A (zh) | 2009-10-28 | 2011-05-11 | 上海金由氟材料有限公司 | 橡胶-聚四氟乙烯复合型密封圈 |
JP5977959B2 (ja) * | 2012-03-05 | 2016-08-24 | 日東電工株式会社 | 制振シート |
CN105015348B (zh) | 2013-09-16 | 2017-08-22 | 浙江师范大学 | 一种缓冲制动器 |
WO2015058662A1 (zh) * | 2013-10-25 | 2015-04-30 | 齐齐哈尔轨道交通装备有限责任公司大连研发中心 | 一种车钩缓冲器和铁路车辆 |
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2017
- 2017-02-28 EP EP17766335.8A patent/EP3431808B1/en active Active
- 2017-02-28 US US16/084,855 patent/US11209064B2/en active Active
- 2017-02-28 WO PCT/JP2017/007608 patent/WO2017159332A1/ja active Application Filing
- 2017-02-28 JP JP2018505781A patent/JP6612427B2/ja active Active
- 2017-02-28 CN CN201780007254.8A patent/CN108474432B/zh active Active
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JP2005047341A (ja) * | 2003-07-31 | 2005-02-24 | Koyo Seiko Co Ltd | ステアリング装置 |
JP2008024076A (ja) * | 2006-07-19 | 2008-02-07 | Toyota Motor Corp | ステアリング装置 |
JP2009012663A (ja) * | 2007-07-06 | 2009-01-22 | Nsk Ltd | ラックストロークエンドの衝撃緩和装置 |
JP2014100935A (ja) * | 2012-11-16 | 2014-06-05 | Jtekt Corp | ステアリング装置 |
Non-Patent Citations (1)
Title |
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See also references of EP3431808A4 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019100371A (ja) * | 2017-11-29 | 2019-06-24 | Nok株式会社 | 緩衝ストッパ |
JP2019173788A (ja) * | 2018-03-27 | 2019-10-10 | Nok株式会社 | 緩衝ストッパ |
JP2020051595A (ja) * | 2018-09-28 | 2020-04-02 | Nok株式会社 | 緩衝ストッパ |
JP7075325B2 (ja) | 2018-09-28 | 2022-05-25 | Nok株式会社 | 緩衝ストッパ |
Also Published As
Publication number | Publication date |
---|---|
EP3431808A1 (en) | 2019-01-23 |
EP3431808A4 (en) | 2019-04-03 |
CN108474432A (zh) | 2018-08-31 |
US11209064B2 (en) | 2021-12-28 |
JPWO2017159332A1 (ja) | 2019-01-17 |
EP3431808B1 (en) | 2022-11-16 |
JP6612427B2 (ja) | 2019-11-27 |
CN108474432B (zh) | 2021-03-30 |
US20190085928A1 (en) | 2019-03-21 |
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