JPH1194080A - Parking mechanism of automatic transmission - Google Patents
Parking mechanism of automatic transmissionInfo
- Publication number
- JPH1194080A JPH1194080A JP9273889A JP27388997A JPH1194080A JP H1194080 A JPH1194080 A JP H1194080A JP 9273889 A JP9273889 A JP 9273889A JP 27388997 A JP27388997 A JP 27388997A JP H1194080 A JPH1194080 A JP H1194080A
- Authority
- JP
- Japan
- Prior art keywords
- parking
- park gear
- gear
- rotation
- tip
- 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.)
- Pending
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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
-
- 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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3425—Parking lock mechanisms or brakes in the transmission characterised by pawls or wheels
-
- 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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/48—Signals to a parking brake or parking lock; Control of parking locks or brakes being part of the transmission
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、自動変速機のパーク
機構に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a park mechanism for an automatic transmission.
【０００２】[0002]
【従来の技術及びその課題】従来、自動変速機のパーク
機構は図２の概略図で示すような構造となっており、パ
ーキングポール１は、その先端の先端歯部３の外面の当
接面３ａが支点２を中心として回動軌跡Ｐ１を描いて、
パークギア４の外周の外周歯部４ａに当接して噛み合う
ように構成されているが、従来においては、パークギア
４が例えば図中の矢印で示すように時計方向に回転され
ている時に、パーキングポール１を回動軌跡Ｐ１に沿っ
て回動させ噛み合わせようとすると、前記当接面３ａは
パークギア４の中心線４ｃよりも外側で回動軌跡を描
き、その当接面３ａの速度成分方向はａに示すように、
パークギア４の回転方向と反対側となり、これによりパ
ーキングポール１の先端歯部３がパークギア４の外周歯
部４ａに噛み合う時に衝撃が発生して、パーキングポー
ル１に振動等が生じるという問題点があった。2. Description of the Related Art Conventionally, a parking mechanism of an automatic transmission has a structure as shown in a schematic view of FIG. 2, and a parking pole 1 has an abutting surface of an outer surface of a tip tooth portion 3 at a tip thereof. 3a draws a rotation trajectory P1 around the fulcrum 2,
The parking gear 4 is configured so as to abut and mesh with the outer peripheral teeth 4a on the outer periphery of the park gear 4. However, conventionally, when the park gear 4 is rotated clockwise as indicated by an arrow in the figure, the parking pole 1 Is rotated along the rotation trajectory P1 so as to engage with each other, the contact surface 3a draws a rotation trajectory outside the center line 4c of the park gear 4, and the speed component direction of the contact surface 3a is a As shown in
This is on the opposite side to the rotation direction of the park gear 4, so that when the tip teeth 3 of the parking pole 1 mesh with the outer teeth 4 a of the park gear 4, an impact is generated, and the parking pole 1 is caused to vibrate. Was.
【０００３】[0003]
【課題を解決するための手段】本発明は上記従来の問題
点に鑑み案出したものであって、パーキングポールがパ
ークギアに噛み合わされる時の衝撃を緩和することので
きる自動変速機のパーク機構を提供せんことを目的と
し、その要旨は、パークギアの外周歯部に対し、パーキ
ングポールの先端が支点を中心とする回動軌跡を描がい
て回動し噛み合わされる構造の自動変速機のパーク機構
において、前記パーキングポールの先端には凹部が形成
され、該凹部の内壁の当接面が前記パークギアの外周歯
部と当接する際に、該パークギアの回転方向と前記当接
面の回動軌跡の速度成分方向がパークギアの回転方向に
かかわらず同一方向となるように設定されていることで
ある。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and is directed to a parking mechanism for an automatic transmission capable of reducing an impact when a parking pawl is engaged with a park gear. The gist of the present invention is to provide a park for an automatic transmission having a structure in which the tip of a parking pole rotates and meshes with the outer peripheral tooth portion of the park gear by drawing a rotation path around a fulcrum. In the mechanism, a recess is formed at the tip of the parking pole, and when the contact surface of the inner wall of the recess contacts the outer peripheral tooth portion of the park gear, the rotation direction of the park gear and the rotation locus of the contact surface Are set to be the same direction regardless of the rotation direction of the park gear.
【０００４】[0004]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。図１は、本例の自動変速機のパーク機構の概略構
成図であり、パーキングポール１は支点２を中心として
回動可能となっており、その先端の先端歯部３には、下
側へ開口して略台形状断面の凹部５が形成されており、
この凹部５の図示右側の内壁面は第１当接面５ａとなっ
ており、また左側の内壁面は第２当接面５ｂとなってい
る。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a park mechanism of an automatic transmission according to the present embodiment. A parking pole 1 is rotatable around a fulcrum 2 and a tip tooth portion 3 at a tip thereof is directed downward. A concave portion 5 having a substantially trapezoidal cross section is formed by opening,
The inner wall surface on the right side of the recess 5 in the figure is a first contact surface 5a, and the inner wall surface on the left side is a second contact surface 5b.
【０００５】一方、パークギア４の外周には外周歯部４
ａが形成されており、このパークギア４の中心線４ｃ上
に前記パーキングポール１の凹部５が回動されて整合さ
れるが、パーキングポール１が回動される際には凹部５
の内壁面を構成する前記第１当接面５ａは、支点２を中
心としてパークギア４の中心線４ｃよりも支点２側の回
動軌跡Ｐ２を描いて回動され、回動軌跡Ｐ２の速度成分
方向ｂが図示右方向となるように設定されている。また
一方、凹部５の対向する内壁面である第２当接面５ｂの
回動軌跡はＰ３であり、この回動軌跡Ｐ３は中心線４ｃ
よりも外側となり、この回動軌跡Ｐ３による速度成分方
向ｃは図示左方向となるように設定されている。On the other hand, the outer peripheral tooth portion 4
a is formed, and the concave portion 5 of the parking pole 1 is rotated and aligned on the center line 4c of the park gear 4, but when the parking pole 1 is rotated, the concave portion 5 is formed.
The first abutment surface 5a constituting the inner wall surface is rotated about a fulcrum 2 on a trajectory P2 closer to the fulcrum 2 than the center line 4c of the park gear 4, and the velocity component of the trajectory P2 The direction b is set to be the right direction in the figure. On the other hand, the rotation trajectory of the second contact surface 5b which is the inner wall surface facing the concave portion 5 is P3, and the rotation trajectory P3 is the center line 4c.
And the speed component direction c based on the rotation trajectory P3 is set to be the left direction in the figure.
【０００６】例えばパークギア４が図中矢印で示すよう
に時計方向に回転されている時に、支点２を中心として
パーキングポール１を下方側へ回動させると、第１当接
面５ａが回動軌跡Ｐ２を描いて回動し、この時の速度成
分方向はｂとなり、パークギア４の回転方向と同一方向
となるため、パークギア４の外周歯部４ａが第１当接面
５ａに当接して噛み合わされる時にパークギア４の回転
方向と第１当接面５ａの速度成分方向ｂとが一致して、
パーキングポール１は回転方向へ逃げながら第１当接面
５ａが外周歯部４ａと噛み合い、衝撃が良好に緩和され
ることとなる。[0006] For example, when the parking pole 1 is rotated downward about the fulcrum 2 while the park gear 4 is rotated clockwise as indicated by the arrow in the figure, the first contact surface 5a causes the rotation locus. P2 is rotated, and the speed component direction at this time becomes b, which is the same direction as the rotation direction of the park gear 4, so that the outer peripheral teeth portion 4a of the park gear 4 comes into contact with the first contact surface 5a and meshes. When the rotation direction of the park gear 4 coincides with the speed component direction b of the first contact surface 5a,
The first contact surface 5a meshes with the outer peripheral tooth portion 4a while escaping in the rotation direction of the parking pole 1, so that the impact is favorably reduced.
【０００７】また逆に、パークギア４が反時計方向に回
転されている場合、パーキングポール１を支点２を中心
として回動させると、第２当接面５ｂが回動軌跡Ｐ３を
描きパークギア４の外周歯部４ａと当接することとな
り、この場合は第２当接面５ｂの回動軌跡Ｐ３の速度成
分方向ｃは反時計方向であり、パークギア４の回転方向
と一致し、この場合にも噛み合う時に衝撃が良好に緩和
されることとなる。Conversely, when the parking gear 1 is rotated counterclockwise, when the parking pole 1 is rotated about the fulcrum 2, the second contact surface 5b draws a rotation locus P3 and the parking gear 4 In this case, the speed component direction c of the rotation trajectory P3 of the second contact surface 5b is counterclockwise, coincides with the rotation direction of the park gear 4, and meshes in this case as well. Sometimes the impact is well mitigated.
【０００８】従って、従来では、パーキングポール１が
パークギア４に噛み合わされる時に、パーキングポール
１の回動軌跡の速度成分がパークギア４の回転方向と逆
となって衝撃が大となっていたのが、本例では、パーク
ギア４の回転方向とパーキングポール１の回動軌跡の速
度成分方向が一致することにより、良好に衝撃が緩和さ
れて両者が噛み合わされることとなる。特に、まだ車が
止まっていない状態で運転者がＰレンジへセレクトレバ
ーを操作したような場合の衝撃を良好に緩和することが
できるものとなる。Therefore, conventionally, when the parking pawl 1 is engaged with the park gear 4, the speed component of the rotation locus of the parking pawl 1 is opposite to the rotation direction of the park gear 4, and the impact is large. In the present embodiment, the rotational direction of the park gear 4 and the velocity component direction of the rotation trajectory of the parking pawl 1 coincide with each other, so that the impact is satisfactorily alleviated and the two are meshed. In particular, it is possible to satisfactorily reduce the impact when the driver operates the select lever to the P range while the vehicle is not stopped.
【０００９】[0009]
【発明の効果】本発明は、パークギアの外周歯部に対
し、パーキングポールの先端が支点を中心とする回動軌
跡を描がいて回動し噛み合わされる構造の自動変速機の
パーク機構において、前記パーキングポールの先端には
凹部が形成され、該凹部の内壁の当接面が前記パークギ
アの外周歯部と当接する際に、該パークギアの回転方向
と前記当接面の回動軌跡の速度成分方向がパークギアの
回転方向にかかわらず同一方向となるように設定されて
いることにより、パークギアに対しパーキングポールの
先端が噛み合わされる際に、パーキングポールの先端の
回動軌跡の速度成分方向はパークギアの回転方向と同一
方向となるため、衝撃が良好に緩和されて、パーキング
ポールの振動等の発生を良好に抑えることができるもの
となる。According to the present invention, there is provided a park mechanism for an automatic transmission having a structure in which the tip of a parking pole is turned and meshed with an outer peripheral tooth portion of a park gear by drawing a turning locus about a fulcrum. A concave portion is formed at the tip of the parking pole, and when the contact surface of the inner wall of the concave portion comes into contact with the outer peripheral tooth portion of the park gear, the rotation direction of the park gear and the velocity component of the rotation locus of the contact surface Since the direction is set to be the same direction regardless of the rotation direction of the park gear, when the tip of the parking pole meshes with the park gear, the speed component direction of the rotation trajectory of the tip of the parking pole changes to the direction of the park gear. Since the rotation direction is the same as the rotation direction, the impact is satisfactorily alleviated, and the occurrence of vibrations and the like of the parking pole can be satisfactorily suppressed.
【図１】自動変速機のパーク機構の概略構成図である。FIG. 1 is a schematic configuration diagram of a park mechanism of an automatic transmission.
【図２】従来の自動変速機のパーク機構の概略構成図で
ある。FIG. 2 is a schematic configuration diagram of a park mechanism of a conventional automatic transmission.
１ パーキングポール ２ 支点 ３ 先端歯部 ４ パークギア ４ａ 外周歯部 ４ｃ 中心線 ５ 凹部 ５ａ 第１当接面 ５ｂ 第２当接面 Ｐ２，Ｐ３ 回動軌跡 ｂ，ｃ 回動軌跡の速度成分方向 REFERENCE SIGNS LIST 1 parking pole 2 fulcrum 3 tip tooth 4 park gear 4 a outer peripheral tooth 4 c center line 5 recess 5 a first contact surface 5 b second contact surface P2, P3 rotation trajectory b, c speed component direction of rotation trajectory
Claims (1)
グポールの先端が支点を中心とする回動軌跡を描がいて
回動し噛み合わされる構造の自動変速機のパーク機構に
おいて、前記パーキングポールの先端には凹部が形成さ
れ、該凹部の内壁の当接面が前記パークギアの外周歯部
と当接する際に、該パークギアの回転方向と前記当接面
の回動軌跡の速度成分方向がパークギアの回転方向にか
かわらず同一方向となるように設定されていることを特
徴とする自動変速機のパーク機構。1. A parking mechanism for an automatic transmission having a structure in which the tip of a parking pole rotates and meshes with a peripheral tooth portion of a park gear by drawing a rotation locus about a fulcrum. A concave portion is formed at the tip, and when the contact surface of the inner wall of the concave portion comes into contact with the outer peripheral tooth portion of the park gear, the direction of rotation of the park gear and the speed component direction of the rotation locus of the contact surface are determined by the direction of the park gear. A park mechanism for an automatic transmission, which is set so as to be in the same direction regardless of the rotation direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9273889A JPH1194080A (en) | 1997-09-19 | 1997-09-19 | Parking mechanism of automatic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9273889A JPH1194080A (en) | 1997-09-19 | 1997-09-19 | Parking mechanism of automatic transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1194080A true JPH1194080A (en) | 1999-04-09 |
Family
ID=17533995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9273889A Pending JPH1194080A (en) | 1997-09-19 | 1997-09-19 | Parking mechanism of automatic transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1194080A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009280178A (en) * | 2008-05-26 | 2009-12-03 | Toyota Motor Corp | Parking pawl, parking apparatus and hybrid vehicle |
| JP2012081933A (en) * | 2010-10-14 | 2012-04-26 | Jatco Ltd | Automatic transmission parking mechanism |
| JP2013100896A (en) * | 2011-10-19 | 2013-05-23 | Ricoh Co Ltd | Clutch mechanism and image forming device |
| CN107131273A (en) * | 2017-07-07 | 2017-09-05 | 浙江春风动力股份有限公司 | A kind of vehicle and its cam-and- |
| CN107327518A (en) * | 2017-08-30 | 2017-11-07 | 北京新能源汽车股份有限公司 | Halting mechanism and vehicle |
| CN107387750A (en) * | 2017-08-30 | 2017-11-24 | 北京新能源汽车股份有限公司 | Halting mechanism and vehicle |
| CN107524803A (en) * | 2017-08-30 | 2017-12-29 | 北京新能源汽车股份有限公司 | Halting mechanism and vehicle |
| CN107542924A (en) * | 2017-08-30 | 2018-01-05 | 北京新能源汽车股份有限公司 | Halting mechanism and vehicle |
| CN107559419A (en) * | 2017-08-30 | 2018-01-09 | 北京新能源汽车股份有限公司 | Halting mechanism |
| CN109944939A (en) * | 2017-12-20 | 2019-06-28 | 韩虎产业株式会社 | Electric automobile gear device parking apparatus and its method for diagnosing faults |
| CN111350819A (en) * | 2020-03-17 | 2020-06-30 | 浩夫尔动力总成（上海）有限公司 | Parking mechanism of automobile transmission |
-
1997
- 1997-09-19 JP JP9273889A patent/JPH1194080A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009280178A (en) * | 2008-05-26 | 2009-12-03 | Toyota Motor Corp | Parking pawl, parking apparatus and hybrid vehicle |
| JP2012081933A (en) * | 2010-10-14 | 2012-04-26 | Jatco Ltd | Automatic transmission parking mechanism |
| CN102454779A (en) * | 2010-10-14 | 2012-05-16 | 加特可株式会社 | Parking mechnism for automatic transmission |
| JP2013100896A (en) * | 2011-10-19 | 2013-05-23 | Ricoh Co Ltd | Clutch mechanism and image forming device |
| CN107131273A (en) * | 2017-07-07 | 2017-09-05 | 浙江春风动力股份有限公司 | A kind of vehicle and its cam-and- |
| CN107131273B (en) * | 2017-07-07 | 2023-07-28 | 浙江春风动力股份有限公司 | Vehicle and cam lever mechanism thereof |
| CN107542924A (en) * | 2017-08-30 | 2018-01-05 | 北京新能源汽车股份有限公司 | Halting mechanism and vehicle |
| CN107524803A (en) * | 2017-08-30 | 2017-12-29 | 北京新能源汽车股份有限公司 | Halting mechanism and vehicle |
| CN107387750A (en) * | 2017-08-30 | 2017-11-24 | 北京新能源汽车股份有限公司 | Halting mechanism and vehicle |
| CN107559419A (en) * | 2017-08-30 | 2018-01-09 | 北京新能源汽车股份有限公司 | Halting mechanism |
| CN107524803B (en) * | 2017-08-30 | 2019-06-04 | 北京新能源汽车股份有限公司 | Halting mechanism and vehicle |
| CN107387750B (en) * | 2017-08-30 | 2019-06-04 | 北京新能源汽车股份有限公司 | Halting mechanism and vehicle |
| CN107542924B (en) * | 2017-08-30 | 2019-06-04 | 北京新能源汽车股份有限公司 | Halting mechanism and vehicle |
| CN107327518A (en) * | 2017-08-30 | 2017-11-07 | 北京新能源汽车股份有限公司 | Halting mechanism and vehicle |
| CN109944939A (en) * | 2017-12-20 | 2019-06-28 | 韩虎产业株式会社 | Electric automobile gear device parking apparatus and its method for diagnosing faults |
| CN111350819A (en) * | 2020-03-17 | 2020-06-30 | 浩夫尔动力总成（上海）有限公司 | Parking mechanism of automobile transmission |
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