JPH08247283A - Speed changing mechanism of transmission - Google Patents

Speed changing mechanism of transmission

Info

Publication number
JPH08247283A
JPH08247283A JP4996595A JP4996595A JPH08247283A JP H08247283 A JPH08247283 A JP H08247283A JP 4996595 A JP4996595 A JP 4996595A JP 4996595 A JP4996595 A JP 4996595A JP H08247283 A JPH08247283 A JP H08247283A
Authority
JP
Japan
Prior art keywords
drive member
fork shaft
moved
end side
select
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.)
Granted
Application number
JP4996595A
Other languages
Japanese (ja)
Other versions
JP3089975B2 (en
Inventor
Toshiharu Aiko
寿晴 愛甲
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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 Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP4996595A priority Critical patent/JP3089975B2/en
Publication of JPH08247283A publication Critical patent/JPH08247283A/en
Application granted granted Critical
Publication of JP3089975B2 publication Critical patent/JP3089975B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/18—Preventing unintentional or unsafe shift, e.g. preventing manual shift from highest gear to reverse gear
    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/18—Preventing unintentional or unsafe shift, e.g. preventing manual shift from highest gear to reverse gear
    • F16H2061/185—Means, e.g. catches or interlocks, for preventing unintended shift into reverse gear
    • 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
    • F16H2063/3086—Shift head arrangements, e.g. forms or arrangements of shift heads for preselection or shifting

Abstract

PURPOSE: To prevent a drive member and shift lever from jolting by providing a positioning projection for regulating the movement of a drive member in the selecting direction in the establishment of a second advance gear stage on a first fork shaft. CONSTITUTION: A retreat side engaging part 30 provided on a first for shaft 12 is provided integrally with a positioning projection 40 projecting to a second fork shaft 14 side to overlap a second advance side engaging part 34 in the selecting direction. A plate amount of a drive member 16 in the establishment of a second speed gear stage '2' is regulated to the same play amount in the establishment of a third speed gear stage '3'. Thus, the play of the drive member and shift lever in the establishment of the second advance gear stage adjacent to the retreat gear stage is restrained.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は車両等の変速機の変速操
作機構に係り、特に、同一のフォークシャフトを一端側
へ移動させると前進ギヤ段が成立させられ、他端側へ移
動させると後進ギヤ段が成立させられる場合に、それ等
の前進ギヤ段および後進ギヤ段でセレクト位置をずらす
ようにした変速操作機構の改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gear shift operation mechanism for a transmission such as a vehicle, and more particularly, when the same fork shaft is moved to one end side, a forward gear is established and when it is moved to the other end side. The present invention relates to an improvement of a gear shift operation mechanism that shifts a select position between a forward gear stage and a reverse gear stage when a reverse gear stage is established.

【０００２】[0002]

【従来の技術】[Prior art]

（ａ）軸方向に移動可能に配設され、軸方向の一端側お
よび他端側へ移動させられることによってそれぞれ後進
ギヤ段、第１の前進ギヤ段を成立させる第１フォークシ
ャフトと、（ｂ）その第１フォークシャフトと略平行に
軸方向に移動可能に配設され、前記一端側へ移動させら
れることによって第２の前進ギヤ段を成立させる第２フ
ォークシャフトと、（ｃ）シフトレバーがセレクト操作
されることにより前記第１フォークシャフトおよび第２
フォークシャフトの軸心と略直角なセレクト方向へ移動
させられ、その第１フォークシャフト側から第１セレク
ト位置，第２セレクト位置，および第３セレクト位置に
位置させられるとともに、そのシフトレバーがシフト操
作されることにより前記一端側および他端側へ移動させ
られる駆動部材と、（ｄ）前記第１フォークシャフトに
設けられ、前記駆動部材が前記第１セレクト位置に位置
させられた状態で前記一端側へ移動させられる際にその
駆動部材と係合させられることにより、その第１フォー
クシャフトをその一端側へ移動させて前記後進ギヤ段を
成立させるとともに、その駆動部材が前記第２セレクト
位置に位置させられた状態においてもその駆動部材と係
合可能な後進側係合部と、（ｅ）前記第１フォークシャ
フトに設けられ、前記駆動部材が前記第２セレクト位置
に位置させられた状態で前記他端側へ移動させられる際
にその駆動部材と係合させられることにより、その第１
フォークシャフトをその他端側へ移動させて前記第１の
前進ギヤ段を成立させる第１の前進側係合部と、（ｆ）
前記第２フォークシャフトに設けられ、前記駆動部材が
前記第３セレクト位置に位置させられた状態で前記一端
側へ移動させられる際にその駆動部材と係合させられる
ことにより、その第２フォークシャフトをその一端側へ
移動させて前記第２の前進ギヤ段を成立させるととも
に、その駆動部材が前記第２セレクト位置に位置させら
れた状態においてもその駆動部材と係合可能な第２の前
進側係合部とを有する変速機の変速操作機構が、例えば
特公昭５２−１４５８号公報等に開示されている。(A) a first fork shaft, which is movably arranged in the axial direction, and which establishes a reverse gear stage and a first forward gear stage by being moved to one end side and the other end side in the axial direction, respectively; ) A second fork shaft, which is disposed so as to be movable in the axial direction substantially parallel to the first fork shaft and which is moved to the one end side to establish a second forward gear stage, and (c) a shift lever. When the select operation is performed, the first fork shaft and the second fork shaft
The fork shaft is moved in the select direction substantially perpendicular to the axis, and is moved from the first fork shaft side to the first select position, the second select position, and the third select position, and the shift lever is operated to shift. A drive member that is moved to the one end side and the other end side by being (d) provided on the first fork shaft, and the one end side in a state where the drive member is positioned at the first select position. And the drive member is engaged with the drive member, the first fork shaft is moved to the one end side to establish the reverse gear stage, and the drive member is located at the second select position. A reverse-side engaging portion that is engageable with the driving member even in the driven state, and (e) is provided on the first fork shaft, By serial driving member is engaged with the drive member when moved to the other end side in a state of being is positioned in the second select position, a first
A first advancing side engaging portion that moves the fork shaft to the other end side to establish the first advancing gear stage;
The second fork shaft, which is provided on the second fork shaft and is engaged with the drive member when the drive member is moved to the one end side in a state where the drive member is located at the third select position, the second fork shaft. To the one side thereof to establish the second forward gear, and the second forward side engageable with the drive member even when the drive member is located at the second select position. A gear shift operation mechanism of a transmission having an engagement portion is disclosed in, for example, Japanese Patent Publication No. 52-1458.

【０００３】図６は、上記のような変速操作機構の一例
で、自動車のステアリングコラムの近傍に配設されるコ
ラム式変速操作機構の場合であり、未だ公知のものでは
ないが理解を容易とするために具体的に説明する。かか
る図６において、ケース１０には第１フォークシャフト
１２および第２フォークシャフト１４が互いに平行に且
つそれぞれ軸方向の移動可能に配設されており、駆動部
材１６によってそれぞれ軸方向へ移動させられることに
より、図示しない変速機の変速ギヤ段を切り換えるよう
になっている。駆動部材１６は、図６における VII− V
II断面を示す図７から明らかなように、上記フォークシ
ャフト１２，１４の両軸心を含む平面と平行でその軸心
と直角な方向、すなわち図６における上下方向で図７に
おける左右方向、に配設されたシフト・セレクトシャフ
ト１８に軸方向の相対移動不能且つ軸心まわりの相対回
転不能に取り付けられている。FIG. 6 shows an example of the above-described gear shift operation mechanism, which is a column type gear shift operation mechanism arranged in the vicinity of a steering column of an automobile, which is not publicly known but is easy to understand. In order to do so, a specific description will be given. In FIG. 6, a first fork shaft 12 and a second fork shaft 14 are arranged in the case 10 in parallel with each other and axially movable, and each of them is axially moved by a drive member 16. Thus, the shift gear stage of the transmission (not shown) is switched. The drive member 16 is VII-V in FIG.
As is clear from FIG. 7 showing the II cross section, in the direction parallel to the plane including both shaft centers of the fork shafts 12 and 14 and perpendicular to the shaft center, that is, in the vertical direction in FIG. 6 and the horizontal direction in FIG. It is attached to the provided shift / select shaft 18 so as not to be relatively movable in the axial direction and to be relatively rotatable around the axis.

【０００４】上記シフト・セレクトシャフト１８にはシ
フトレバー２０が一体的に取り付けられており、そのシ
フトレバー２０によってシフト・セレクトシャフト１８
が軸方向へ移動させられることにより、駆動部材１６は
図６における上下方向で図７における左右方向であるセ
レクト方向へ移動させられ、第１フォークシャフト１２
側から第１セレクト位置、第２セレクト位置、および第
３セレクト位置に位置させられるようになっている。ま
た、シフトレバー２０によってシフト・セレクトシャフ
ト１８が軸心まわりに回動させられることにより、駆動
部材１６は図６における左右方向で図７の紙面に垂直な
方向であるシフト方向へ移動させられ、フォークシャフ
ト１２，１４の一端側である図６における右端側の第１
シフト位置、フォークシャフト１２，１４の他端側であ
る図６における左端側の第２シフト位置、およびそれ等
の中間のニュートラル（Ｎ）位置に位置させられるよう
になっている。シフトレバー２０によってシフト・セレ
クトシャフト１８を軸方向へ移動させる操作がセレクト
操作で、シフト・セレクトシャフト１８を軸心まわりに
回動させる操作がシフト操作である。図６および図７
は、駆動部材１６が第３セレクト位置のニュートラル位
置に位置させられている状態である。A shift lever 20 is integrally attached to the shift / select shaft 18, and the shift / select shaft 18 is attached by the shift lever 20.
Is moved in the axial direction, the drive member 16 is moved in the select direction, which is the horizontal direction in FIG. 7, in the vertical direction in FIG. 6, and the first fork shaft 12
The first select position, the second select position, and the third select position are positioned from the side. Further, when the shift / select shaft 18 is rotated about the axis by the shift lever 20, the drive member 16 is moved in the left / right direction in FIG. 6 in the shift direction which is a direction perpendicular to the paper surface of FIG. The first end on the right end side in FIG. 6 which is one end side of the fork shafts 12 and 14
The shift position, the second shift position on the left end side in FIG. 6 which is the other end side of the fork shafts 12 and 14, and the neutral (N) position intermediate therebetween are arranged. The operation of moving the shift / select shaft 18 in the axial direction by the shift lever 20 is a select operation, and the operation of rotating the shift / select shaft 18 around the axis is a shift operation. 6 and 7
Is a state in which the drive member 16 is located at the neutral position of the third select position.

【０００５】上記シフト・セレクトシャフト１８は、付
勢手段としての一対の圧縮コイルスプリング２２，２４
により、常には駆動部材１６が第３セレクト位置に保持
されるように付勢されている。また、第１フォークシャ
フト１２には、付勢手段としての圧縮コイルスプリング
２６によって常には図６における上方へ突き出されるセ
レクト規制ピン２８が配設されており、前記駆動部材１
６に当接させられることによりその駆動部材１６を第２
セレクト位置に位置決めするとともに、駆動部材１６に
よって圧縮コイルスプリング２６の付勢力に抗して図６
の下方へ押し込まれることにより、その駆動部材１６が
第１セレクト位置まで移動することを許容するようにな
っている。The shift / select shaft 18 has a pair of compression coil springs 22 and 24 as a biasing means.
Thus, the drive member 16 is always urged to be held at the third select position. Further, the first fork shaft 12 is provided with a select regulating pin 28 which is constantly projected upward in FIG. 6 by a compression coil spring 26 as an urging means.
When the driving member 16 is moved to the second
The drive member 16 is positioned at the select position, and the drive member 16 resists the biasing force of the compression coil spring 26.
The drive member 16 is allowed to move to the first select position by being pushed downward.

【０００６】一方、前記第１フォークシャフト１２に
は、後進側係合部３０および第１の前進側係合部３２が
一体に設けられており、後進側係合部３０は、駆動部材
１６が第１セレクト位置に位置させられた状態で第１シ
フト位置へ移動させられる際にその駆動部材１６と係合
させられることにより、第１フォークシャフト１２を一
端側へ移動させて後進ギヤ段「Ｒ」を成立させるととも
に、駆動部材１６が第２セレクト位置に位置させられた
状態においても、第１シフト位置側へ移動させられる際
にはその駆動部材１６と係合させられるようになってい
る。第１の前進側係合部３２は、駆動部材１６が第２セ
レクト位置に位置させられた状態で第２シフト位置へ移
動させられる際にその駆動部材１６と係合させられるこ
とにより、第１フォークシャフト１２を他端側へ移動さ
せて変速比（変速機の入力側回転数／出力側回転数）が
最も大きい第１速ギヤ段「１」を成立させる。第１速ギ
ヤ段「１」は、第１の前進ギヤ段に相当する。On the other hand, the first fork shaft 12 is integrally provided with a reverse drive side engaging portion 30 and a first forward drive side engaging portion 32. The reverse drive side engaging portion 30 is provided with a drive member 16. The first fork shaft 12 is moved to one end side by being engaged with the drive member 16 when the first fork shaft 12 is moved to the first shift position in the state where it is moved to the reverse gear stage “R”. In addition, even when the drive member 16 is positioned at the second select position, the drive member 16 is engaged with the drive member 16 when the drive member 16 is moved to the first shift position side. The first advancing side engaging portion 32 is engaged with the drive member 16 when the drive member 16 is moved to the second shift position in the state where the drive member 16 is located at the second select position. The fork shaft 12 is moved to the other end side to establish the first gear "1" having the largest gear ratio (input side rotation speed / output side rotation speed of the transmission). The first speed gear "1" corresponds to the first forward gear.

【０００７】また、前記第２フォークシャフト１４に
は、第２の前進側係合部３４および第３の前進側係合部
３６が一体に設けられており、第２の前進側係合部３４
は、駆動部材１６が第３セレクト位置に位置させられた
状態で第１シフト位置へ移動させられる際にその駆動部
材１６と係合させられることにより、第２フォークシャ
フト１４を一端側へ移動させて変速比が２番目の第２速
ギヤ段「２」を成立させるとともに、駆動部材１６が第
２セレクト位置に位置させられた状態においても、第１
シフト位置側へ移動させられる際にはその駆動部材１６
と係合させられるようになっている。第３の前進側係合
部３６は、駆動部材１６が第３セレクト位置に位置させ
られた状態で第２シフト位置へ移動させられる際にその
駆動部材１６と係合させられることにより、第２フォー
クシャフト１４を他端側へ移動させて変速比が３番目の
第３速ギヤ段「３」を成立させる。上記第２速ギヤ段
「２」は、第２の前進ギヤ段に相当する。Further, the second fork shaft 14 is integrally provided with a second advancing side engaging portion 34 and a third advancing side engaging portion 36, and the second advancing side engaging portion 34 is provided.
Causes the second fork shaft 14 to move to the one end side by being engaged with the drive member 16 when the drive member 16 is moved to the first shift position with the drive member 16 being in the third select position. Even when the drive member 16 is located at the second select position while the second gear stage "2" having the second gear ratio is established,
When it is moved to the shift position side, its drive member 16
Is adapted to be engaged with. The third forward-side engaging portion 36 is engaged with the drive member 16 when the drive member 16 is moved to the second shift position in the state where the drive member 16 is positioned at the third select position, and thus the second forward drive side engaging portion 36 is provided. The fork shaft 14 is moved to the other end side to establish the third gear stage “3” having the third gear ratio. The second gear "2" corresponds to the second forward gear.

【０００８】このような変速操作機構においては、後進
ギヤ段「Ｒ」を成立させる第１セレクト位置と、第１速
ギヤ段「１」を成立させる第２セレクト位置とがずらさ
れ、図８に示すように駆動部材１６が第２セレクト位置
に位置させられた状態では、図の右方向である第１シフ
ト位置へ移動させようとしても、駆動部材１６は第１フ
ォークシャフト１２の後進側係合部３０および第２フォ
ークシャフト１４の第２の前進側係合部３４の双方に係
合させられるため、２重噛合い防止機構などによりその
移動が阻止されて何れのギヤ段も成立させられることは
ない。すなわち、第２の前進側係合部３４は、第３の前
進側係合部３６よりも第１フォークシャフト１２側へ突
き出すように設けられているのであり、第２セレクト位
置において駆動部材１６を図８の左方向である第２シフ
ト位置へ移動させて第１速ギヤ段「１」を成立させるこ
とは許容されるが、そのまま第１シフト位置へ移動させ
る際には第２の前進側係合部３４が係合させられるので
ある。因みに、前記図６に示すシャフトの軸心から各係
合部の端面までの寸法ａ〜ｄは、ａ＜ｂ、およびｄ＜ｃ
の関係を有する。これにより、第１速ギヤ段「１」から
第２速ギヤ段「２」へ変速操作する際に、誤って後進ギ
ヤ段「Ｒ」側へ操作することが防止される。In such a gear shift operation mechanism, the first select position for establishing the reverse gear "R" and the second select position for establishing the first speed gear "1" are displaced from each other, as shown in FIG. As shown in the figure, in the state where the drive member 16 is located at the second select position, the drive member 16 is engaged with the first fork shaft 12 on the rearward movement side even if the drive member 16 is moved to the first shift position which is the right direction in the drawing. Since it is engaged with both the portion 30 and the second forward-side engaging portion 34 of the second fork shaft 14, its movement is blocked by a double meshing prevention mechanism or the like to establish any gear. There is no. That is, the second advancing side engaging portion 34 is provided so as to protrude toward the first fork shaft 12 side with respect to the third advancing side engaging portion 36, and the drive member 16 is set at the second select position. Although it is permissible to move to the second shift position, which is the leftward direction in FIG. 8, to establish the first speed gear “1”, when moving to the first shift position as it is, the second forward side engagement The mating portion 34 is engaged. Incidentally, the dimensions a to d from the shaft center of the shaft shown in FIG. 6 to the end faces of the engaging portions are a <b and d <c.
Have a relationship. This prevents erroneous operation to the reverse gear "R" side when shifting from the first gear "1" to the second gear "2".

【０００９】[0009]

【発明が解決しようとする課題】しかしながら、このよ
うな変速操作機構においては、第２の前進ギヤ段である
第２速ギヤ段「２」の成立時に駆動部材がセレクト方向
へがたつき、更にはシフトレバーもがたついてしまうと
いう問題があった。すなわち、各ギヤ段の成立時には、
セレクト方向において隣接する各係合部によって駆動部
材のがたつきを規制しており、具体的には後進ギヤ段
「Ｒ」の成立時には第２の前進側係合部３４が駆動部材
１６と係合してがたつきを防止し、第１の前進ギヤ段で
ある第１速ギヤ段「１」の成立時には第３の前進側係合
部３６が駆動部材１６と係合してがたつきを防止してい
るのであるが、第２速ギヤ段「２」の成立時の駆動部材
１６と隣接する後進側係合部３０との間には、図９に示
すように第２の前進側係合部３４が余分に突き出してい
る分（図６のｃ−ｄ）に相当する隙間（がたつき量）ｅ
が生じてしまうのである。However, in such a gear shift operation mechanism, the drive member rattles in the select direction when the second forward gear "2", which is the second forward gear, is established, and Had a problem that the shift lever also rattled. That is, when each gear is established,
The rattling of the drive member is regulated by the adjacent engaging portions in the select direction. Specifically, when the reverse gear stage “R” is established, the second forward engaging portion 34 engages with the drive member 16. Accordingly, rattling is prevented, and when the first forward speed "1", which is the first forward speed, is established, the third forward-side engaging portion 36 engages with the drive member 16 and rattles. However, as shown in FIG. 9, a second forward side is provided between the drive member 16 and the adjacent reverse side engaging portion 30 when the second speed gear “2” is established. A gap (amount of rattling) e corresponding to the extra protrusion of the engaging portion 34 (cd in FIG. 6)
Will occur.

【００１０】本発明は以上の事情を背景として為された
もので、その目的とするところは、同一のフォークシャ
フトを一端側へ移動させると前進ギヤ段が成立させら
れ、他端側へ移動させると後進ギヤ段が成立させられる
場合に、それ等の前進ギヤ段および後進ギヤ段でセレク
ト位置をずらすようにした変速操作機構において、後進
ギヤ段に隣接する前進ギヤ段の成立時における駆動部材
やシフトレバーのがたつきを防止することにある。The present invention has been made in view of the above circumstances, and an object thereof is to move the same fork shaft to one end side to establish a forward gear and to move it to the other end side. When a reverse gear is established, the gear shift operation mechanism is configured to shift the select position between the forward gear and the reverse gear, and when the forward gear adjacent to the reverse gear is established, This is to prevent rattling of the shift lever.

【００１１】[0011]

【課題を解決するための手段】かかる目的を達成するた
めに、本発明は、前記（ａ）第１フォークシャフトと、
（ｂ）第２フォークシャフトと、（ｃ）駆動部材と、
（ｄ）後進側係合部と、（ｅ）第１の前進側係合部と、
（ｆ）第２の前進側係合部とを有する変速機の変速操作
機構において、（ｇ）前記第１フォークシャフトに、前
記セレクト方向において前記第２の前進側係合部とオー
バーラップするように前記第２フォークシャフト側へ突
き出し、前記第２の前進ギヤ段成立時における前記駆動
部材のセレクト方向の移動を規制する位置決め突起を設
けたことを特徴とする。In order to achieve the above object, the present invention provides (a) the first fork shaft,
(B) a second fork shaft, (c) a drive member,
(D) a reverse side engaging portion, (e) a first forward side engaging portion,
(F) In a gear shift operation mechanism of a transmission having a second forward side engaging portion, (g) so as to overlap the first fork shaft with the second forward side engaging portion in the select direction. Is provided with a positioning protrusion that protrudes toward the second fork shaft and restricts the movement of the drive member in the select direction when the second forward gear is established.

【００１２】[0012]

【作用および発明の効果】このような変速操作機構にお
いては、駆動部材が第３セレクト位置において一端側へ
移動させられることにより第２の前進ギヤ段が成立させ
られた状態において、第１フォークシャフトに設けられ
た位置決め突起により駆動部材のセレクト方向の移動が
規制されるため、後進ギヤ段に隣接する第２の前進ギヤ
段成立時における駆動部材やシフトレバーのがたつきが
抑制される。In the above-described speed change operation mechanism, the first fork shaft is in the state where the second forward gear is established by moving the drive member toward the one end side at the third select position. The movement of the drive member in the select direction is restricted by the positioning projection provided on the drive member, so that rattling of the drive member and the shift lever when the second forward gear stage adjacent to the reverse gear stage is established is suppressed.

【００１３】[0013]

【実施例】以下、本発明を前記図６および図７のコラム
式変速操作機構に適用した場合について具体的に説明す
る。図１および図２は、それぞれ前記図６および図７に
対応する図で、第１フォークシャフト１２に設けられた
後進側係合部３０には、セレクト方向において前記第２
の前進側係合部３４とオーバーラップするように第２フ
ォークシャフト１４側へ突き出す位置決め突起４０が一
体に設けられている。第１フォークシャフト１２の軸心
から位置決め突起４０の先端面までの寸法ｆは、前記図
６における寸法ｂと略同じで、第１の前進側係合部３２
と同程度だけ第２フォークシャフト１４側へ突き出して
おり、図３に示すように駆動部材１６が第３セレクト位
置において一端側である第１シフト位置へ第２フォーク
シャフト１４と共に移動し、第２速ギヤ段「２」を成立
させることを許容するとともに、その第２速ギヤ段
「２」の成立時における駆動部材１６のセレクト方向の
がたつき量ｇを、図４に示す第３速ギヤ段「３」の成立
時における駆動部材１６のがたつき量ｈと略同じに規制
している。なお、上記位置決め突起４０は、セレクト方
向において第２の前進側係合部３４とオーバーラップす
るが、干渉しないように図２における上方側へずらされ
ている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The case where the present invention is applied to the column type speed change operation mechanism shown in FIGS. 6 and 7 will be specifically described below. FIGS. 1 and 2 are views corresponding to FIGS. 6 and 7, respectively. The reverse side engaging portion 30 provided on the first fork shaft 12 has the second side in the select direction.
A positioning protrusion 40 protruding toward the second fork shaft 14 side is integrally provided so as to overlap with the forward-moving side engaging portion 34. The dimension f from the axial center of the first fork shaft 12 to the tip end surface of the positioning protrusion 40 is substantially the same as the dimension b in FIG. 6, and the first forward-side engaging portion 32.
And the drive member 16 moves to the first shift position, which is one end side in the third select position, together with the second fork shaft 14, and protrudes to the second fork shaft 14 side as much as While permitting the establishment of the second speed gear "2", the rattling amount g of the drive member 16 in the select direction when the second speed gear "2" is established is set to the third speed gear shown in FIG. The rattling amount h of the drive member 16 when the step "3" is established is regulated to be substantially the same. The positioning protrusion 40 overlaps with the second forward-side engaging portion 34 in the select direction, but is shifted upward in FIG. 2 so as not to interfere with it.

【００１４】このように、本実施例では後進側係合部３
０に位置決め突起４０が設けられ、第２速ギヤ段「２」
の成立時における駆動部材１６のセレクト方向のがたつ
き量ｇを、第３速ギヤ段「３」の成立時におけるがたつ
き量ｈと同程度に規制しているため、前記図９のように
大きな隙間（がたつき量）ｅが生じる場合に比較して、
その第２速ギヤ段「２」の成立時における駆動部材１
６、更にはシフトレバー２０のがたつきが抑制される。As described above, in this embodiment, the reverse side engaging portion 3
Positioning protrusion 40 is provided at 0, and the second speed gear stage "2"
The rattling amount g of the drive member 16 in the select direction at the time of the above condition is regulated to the same degree as the rattling amount h at the time of the third speed gear "3" being satisfied. Compared to the case where a large gap (rattle amount) e occurs in
The drive member 1 when the second gear "2" is established
6. Further, rattling of the shift lever 20 is suppressed.

【００１５】以上、本発明の一実施例を図面に基づいて
詳細に説明したが、本発明は他の態様で実施することも
できる。While the embodiment of the present invention has been described in detail with reference to the drawings, the present invention can be embodied in other forms.

【００１６】例えば、前記実施例では後進ギヤ段「Ｒ」
と反対側の第１の前進ギヤ段が第１速ギヤ段「１」で、
後進ギヤ段「Ｒ」に隣接する第２の前進ギヤ段が第２速
ギヤ段「２」であったが、図５の（ａ）に示すように第
１の前進ギヤ段が第３速ギヤ段「３」で、第２の前進ギ
ヤ段が第２速ギヤ段「２」である変速操作機構や、前記
特公昭５２−１４５８号公報に記載の装置のように３本
のフォークシャフトを有する前進５段の変速操作機構
で、図５の（ｂ）のように第１の前進ギヤ段が第５速ギ
ヤ段「５」で、第２の前進ギヤ段が第４速ギヤ段「４」
である変速操作機構など、他の種々の変速操作機構に本
発明は同様に適用され得る。For example, in the above embodiment, the reverse gear stage "R"
The first forward gear on the side opposite to is the first gear "1",
The second forward gear adjacent to the reverse gear “R” was the second gear “2”, but the first forward gear was the third gear as shown in FIG. 5A. It has a gear shift operation mechanism in which the second forward gear is the second speed gear "2" in the gear "3" and three fork shafts like the device described in Japanese Patent Publication No. 52-1458. In a forward gear shift operation mechanism, as shown in FIG. 5B, the first forward gear stage is the fifth speed gear stage “5” and the second forward gear stage is the fourth speed gear stage “4”.
The present invention can be similarly applied to various other gear shift operating mechanisms such as the gear shift operating mechanism.

【００１７】また、前記実施例の駆動部材１６は、セレ
クト操作時にはシフト・セレクトシャフト１８の軸方向
へ直線移動させられ、シフト操作時にはシフト・セレク
トシャフト１８の軸心まわりに回動させられるようにな
っていたが、セレクト操作時には回動させられシフト操
作時には直線移動させられるもの、セレクト操作時およ
びシフト操作時に共に回動させられるものなど、駆動部
材の移動態様は適宜変更され得る。シフトレバーが車両
のフロアに設けられるフロア式変速操作機構にも本発明
は同様に適用され得る。Further, the drive member 16 of the above embodiment is linearly moved in the axial direction of the shift / select shaft 18 during the select operation, and is rotated around the axis of the shift / select shaft 18 during the shift operation. However, the movement mode of the drive member may be appropriately changed, such as one that is rotated during the select operation and linearly moved during the shift operation, and one that is rotated during both the select operation and the shift operation. The present invention can be similarly applied to a floor type speed change operation mechanism in which the shift lever is provided on the floor of the vehicle.

【００１８】また、前記実施例では位置決め突起４０が
後進側係合部３０に設けられていたが、後進側係合部３
０とは別個に位置決め突起を設けることも可能である。Further, in the above embodiment, the positioning protrusion 40 is provided on the reverse side engaging portion 30, but the reverse side engaging portion 3 is provided.
It is also possible to provide a positioning protrusion separately from 0.

【００１９】その他一々例示はしないが、本発明は当業
者の知識に基づいて種々の変更，改良を加えた態様で実
施することができる。Although not illustrated one by one, the present invention can be implemented in various modified and improved modes based on the knowledge of those skilled in the art.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の一実施例である変速機の変速操作機構
の断面図である。FIG. 1 is a cross-sectional view of a gear shift operation mechanism of a transmission that is an embodiment of the present invention.

【図２】図１におけるII−II断面を示す図である。FIG. 2 is a view showing a II-II cross section in FIG.

【図３】図１の実施例において後進ギヤ段に隣接する第
２速ギヤ段が成立させられた状態を示す断面図である。FIG. 3 is a cross-sectional view showing a state in which a second speed gear adjacent to a reverse gear is established in the embodiment of FIG.

【図４】図１の実施例において第２速ギヤ段と反対側の
第３速ギヤ段が成立させられた状態を示す断面図であ
る。FIG. 4 is a sectional view showing a state in which a third speed gear opposite to the second speed gear is established in the embodiment of FIG.

【図５】本発明の他の実施例における各ギヤ段の位置関
係を説明する図である。FIG. 5 is a diagram illustrating a positional relationship between gears according to another embodiment of the present invention.

【図６】本発明を適用する前の比較例を示す断面図で、
図１に対応する図である。FIG. 6 is a sectional view showing a comparative example before applying the present invention,
It is a figure corresponding to FIG.

【図７】図６における VII− VII断面を示す図で、図２
に対応する図である。7 is a diagram showing a cross section taken along line VII-VII in FIG.
It is a figure corresponding to.

【図８】図６の比較例において駆動部材が第２セレクト
位置に位置させられた状態を示す図である。FIG. 8 is a diagram showing a state where the drive member is located at a second select position in the comparative example of FIG.

【図９】図６の比較例において後進ギヤ段に隣接する第
２速ギヤ段が成立させられた状態を示す断面図で、図４
に対応する図である。9 is a sectional view showing a state in which a second speed gear adjacent to a reverse gear is established in the comparative example of FIG.
It is a figure corresponding to.

【符号の説明】[Explanation of symbols]

１２：第１フォークシャフト １４：第２フォークシャフト １６：駆動部材 ２０：シフトレバー ３０：後進側係合部 ３２：第１の前進側係合部 ３４：第２の前進側係合部 ４０：位置決め突起 12: 1st fork shaft 14: 2nd fork shaft 16: Drive member 20: Shift lever 30: Reverse side engagement part 32: 1st advance side engagement part 34: 2nd advance side engagement part 40: Positioning Protrusion

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 軸方向に移動可能に配設され、軸方向の
一端側および他端側へ移動させられることによってそれ
ぞれ後進ギヤ段、第１の前進ギヤ段を成立させる第１フ
ォークシャフトと、 該第１フォークシャフトと略平行に軸方向に移動可能に
配設され、前記一端側へ移動させられることによって第
２の前進ギヤ段を成立させる第２フォークシャフトと、 シフトレバーがセレクト操作されることにより前記第１
フォークシャフトおよび第２フォークシャフトの軸心と
略直角なセレクト方向へ移動させられ、該第１フォーク
シャフト側から第１セレクト位置，第２セレクト位置，
および第３セレクト位置に位置させられるとともに、該
シフトレバーがシフト操作されることにより前記一端側
および他端側へ移動させられる駆動部材と、 前記第１フォークシャフトに設けられ、前記駆動部材が
前記第１セレクト位置に位置させられた状態で前記一端
側へ移動させられる際に該駆動部材と係合させられるこ
とにより、該第１フォークシャフトを該一端側へ移動さ
せて前記後進ギヤ段を成立させるとともに、該駆動部材
が前記第２セレクト位置に位置させられた状態において
も該駆動部材と係合可能な後進側係合部と、 前記第１フォークシャフトに設けられ、前記駆動部材が
前記第２セレクト位置に位置させられた状態で前記他端
側へ移動させられる際に該駆動部材と係合させられるこ
とにより、該第１フォークシャフトを該他端側へ移動さ
せて前記第１の前進ギヤ段を成立させる第１の前進側係
合部と、 前記第２フォークシャフトに設けられ、前記駆動部材が
前記第３セレクト位置に位置させられた状態で前記一端
側へ移動させられる際に該駆動部材と係合させられるこ
とにより、該第２フォークシャフトを該一端側へ移動さ
せて前記第２の前進ギヤ段を成立させるとともに、該駆
動部材が前記第２セレクト位置に位置させられた状態に
おいても該駆動部材と係合可能な第２の前進側係合部と
を有する変速機の変速操作機構において、 前記第１フォークシャフトに、前記セレクト方向におい
て前記第２の前進側係合部とオーバーラップするように
前記第２フォークシャフト側へ突き出し、前記第２の前
進ギヤ段成立時における前記駆動部材のセレクト方向の
移動を規制する位置決め突起を設けたことを特徴とする
変速機の変速操作機構。1. A first fork shaft, which is arranged so as to be movable in the axial direction, and which establishes a reverse gear stage and a first forward gear stage by being moved to one end side and the other end side in the axial direction, respectively. A second fork shaft, which is arranged so as to be movable in the axial direction substantially parallel to the first fork shaft and which establishes a second forward gear by being moved to the one end side, and a shift lever are selectively operated. The first
The fork shaft and the second fork shaft are moved in a select direction that is substantially perpendicular to the axis centers of the fork shaft and the second fork shaft.
And a drive member which is located at the third select position and is moved to the one end side and the other end side by the shift operation of the shift lever, and the drive member provided on the first fork shaft, The first fork shaft is moved to the one end side by being engaged with the drive member when being moved to the one end side in the state of being positioned at the first select position, and the reverse gear stage is established. And a reverse-side engaging portion that is engageable with the drive member even when the drive member is positioned at the second select position, and the first fork shaft is provided with the drive member. 2 When the first fork shaft is engaged by being engaged with the drive member when being moved to the other end side in the state of being positioned at the 2 select position. A first advancing side engaging portion that is moved to the other end side to establish the first advancing gear stage, and the second fork shaft, and the drive member is located at the third select position. The second fork shaft is moved to the one end side by the engagement with the drive member when the second forward gear is established while being moved to the one end side in the state, and the drive member is also formed. A shift operation mechanism of a transmission that has a second forward-side engaging portion that can be engaged with the drive member even when is located at the second select position. In the select direction, the drive member protrudes toward the second fork shaft so as to overlap the second forward-side engaging portion in the direction, and the drive member moves in the select direction when the second forward gear is established. Shift operation mechanism of the transmission, characterized in that a positioning projection for regulating.
JP4996595A 1995-03-09 1995-03-09 Transmission operation mechanism of transmission Expired - Fee Related JP3089975B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4996595A JP3089975B2 (en) 1995-03-09 1995-03-09 Transmission operation mechanism of transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4996595A JP3089975B2 (en) 1995-03-09 1995-03-09 Transmission operation mechanism of transmission

Publications (2)

Publication Number Publication Date
JPH08247283A true JPH08247283A (en) 1996-09-24
JP3089975B2 JP3089975B2 (en) 2000-09-18

Family

ID=12845744

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4996595A Expired - Fee Related JP3089975B2 (en) 1995-03-09 1995-03-09 Transmission operation mechanism of transmission

Country Status (1)

Country Link
JP (1) JP3089975B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006002905A (en) * 2004-06-21 2006-01-05 Toyota Motor Corp Shift gate mechanism for manual transmission

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006002905A (en) * 2004-06-21 2006-01-05 Toyota Motor Corp Shift gate mechanism for manual transmission
JP4525200B2 (en) * 2004-06-21 2010-08-18 トヨタ自動車株式会社 Shift gate mechanism of manual transmission

Also Published As

Publication number Publication date
JP3089975B2 (en) 2000-09-18

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