JPH0132099Y2 - - Google Patents
Info
- Publication number
- JPH0132099Y2 JPH0132099Y2 JP1984172166U JP17216684U JPH0132099Y2 JP H0132099 Y2 JPH0132099 Y2 JP H0132099Y2 JP 1984172166 U JP1984172166 U JP 1984172166U JP 17216684 U JP17216684 U JP 17216684U JP H0132099 Y2 JPH0132099 Y2 JP H0132099Y2
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- fork
- shift fork
- shift
- shaft
- 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.)
- Expired
Links
- 210000000078 claw Anatomy 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 1
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
- F16H63/32—Gear shift yokes, e.g. shift forks
- F16H2063/324—Gear shift yokes, e.g. shift forks characterised by slide shoes, or similar means to transfer shift force to sleeve
-
- 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
- F16H63/32—Gear shift yokes, e.g. shift forks
Landscapes
- Gear-Shifting Mechanisms (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案はトランスミツシヨンにおけるギヤシフ
ト機構のシフトフオーク部分の改良に関する。[Detailed Description of the Invention] Industrial Application Field The present invention relates to an improvement of a shift fork portion of a gear shift mechanism in a transmission.
従来の技術
一般にトランスミツシヨンのギヤシフト機構に
あつてはメインシヤフトに対してスリーブがスプ
ライン嵌合を介して進退自在に軸架される。そし
て同スリーブに対してはシフトフオークが係合さ
せて設けられ、同シフトフオークの操作を介して
進退させる事によつて上記スリーブをドライブシ
ヤフトに軸架するドライブギヤ或いはメインシヤ
フトに上記ドライブギヤと連動して遊転自在に軸
架する複数枚のクラツチギヤに対して選択的にシ
フトさせる事が出来る様に設けられる。そして上
記の様なギヤシフト機構においてシフトフオーク
ａは第４図と第５図の両図面に表わす様にスリー
ブｂの上半部と対応させて半円状に湾曲させて一
体に形成される。そしてその下端部には180度の
変位角を存して左右一対の係合爪部ｃ，ｃが形成
され、同係合爪部ｃ，ｃをスリーブｂに形成する
環状溝に係合させ、同係合爪部ｃ，ｃを介してス
リーブｂを押圧する事によつてそのシフトを行な
う様に設けられる。2. Description of the Related Art Generally, in a transmission gear shift mechanism, a sleeve is mounted on a main shaft through a spline fitting so that the sleeve can move forward and backward. A shift fork is provided to engage with the sleeve, and by moving the sleeve forward and backward through the operation of the shift fork, the sleeve can be attached to the drive gear or main shaft that axially supports the drive shaft. It is provided so that it can be selectively shifted to a plurality of clutch gears that are interlocked and freely rotatably mounted on the shaft. In the gear shift mechanism as described above, the shift fork a is curved in a semicircular shape and integrally formed in correspondence with the upper half of the sleeve b, as shown in FIGS. 4 and 5. A pair of left and right engaging claws c, c are formed at the lower end with a displacement angle of 180 degrees, and the engaging claws c, c are engaged with an annular groove formed in the sleeve b; The sleeve b is shifted by pressing the sleeve b through the engaging claws c, c.
考案が解決しようとする問題点
しかして上記の様なシフト機構にあつては、シ
フトフオークが半円状に湾曲させて一体に形成さ
れスリーブのその上半部に対して係合させる事が
出来るにすぎない事に加えて同シフトフオークの
先端部に一対の係合爪部が設けられているにすぎ
ない事により、スリーブをその全周に対して均等
な押圧力を掛けた状態にて押圧させる事が出来な
い点において、又、スリーブに対する当たり面積
が小さいために面圧が高くなる点、即ち摩耗を生
じ易い点において夫々問題点を有する。Problems to be Solved by the Invention However, in the above-mentioned shift mechanism, the shift fork is formed integrally with a semicircular curve, and can be engaged with the upper half of the sleeve. In addition to the fact that the shift fork has only a pair of engaging claws at the tip, it presses the sleeve with an even pressure applied to its entire circumference. There are problems in that the contact area against the sleeve is small and the contact pressure is high, that is, wear is likely to occur.
本考案は上記の様な問題点を解決するためにそ
の改善を試みたものであつて、その具体的手段と
作用は次に通りである。 The present invention is an attempt to improve the above-mentioned problems, and its specific means and effects are as follows.
問題点を解決するための手段
シフトフオークを左右一対のフオーク片に分
割し、両フオーク片の上端部を同部に形成する
ボスを介してシフトフオークシヤフトに対して
懸架させる。Means for Solving the Problems The shift fork is divided into a pair of left and right fork pieces, and the upper ends of both fork pieces are suspended from the shift fork shaft via a boss formed in the same part.
両フオーク片はスリーブの外周面に沿つて円
弧状に湾曲させて形成する。即ち、上記ボスよ
りスリーブの上弦部かなら下弦部方向に向けて
延在させ、その下端部がスリーブの下弦部に臨
む如く設ける。 Both fork pieces are curved in an arc shape along the outer peripheral surface of the sleeve. That is, the upper chord part of the sleeve is extended from the boss toward the lower chord part, and the lower end thereof is provided so as to face the lower chord part of the sleeve.
両フオーク片には夫々少なくとも二個以上の
係合爪を設けるに、各係合爪は相互に略同一の
偏位角を存して配設する。 Each of the two fork pieces is provided with at least two or more engaging claws, and the engaging claws are arranged at substantially the same angle of deviation from each other.
作 用
スリーブに対する押圧力を同スリーブの全周
面に対して均等に分散させることが出来る。Function: The pressing force against the sleeve can be evenly distributed over the entire circumferential surface of the sleeve.
各当たり面における面圧を小さくする事が出
来る。 It is possible to reduce the surface pressure on each contact surface.
実施例
以下に本考案の具体的な実施例を例示の図面に
ついて説明する。Embodiments Specific embodiments of the present invention will be described below with reference to illustrative drawings.
１はクラツチケース、２はトランスミツシヨン
ケースであつて、クラツチケース１にはドライブ
シヤフト３が横架される。同ドライブシヤフト３
はその後端部がトランスミツシヨンケース２内に
臨む如く設けられ、同後端部にはドライブギヤ４
が軸架される。トランスミツシヨンケース２には
上記ドライブシヤフト３と対向させてメインシヤ
フト５が、又メインシヤフト５と平行させてカウ
ンタシヤフト９が夫々横架される。そして同メイ
ンシヤフト５にはクラツチギヤ６，７，８が夫々
遊転自在に軸架され、又カウンタシヤフト９には
ドライブギヤ４及び各クラツチギヤ６，７，８と
噛合させてカウンタギヤ４Ａ，６Ａ，７Ａ，８Ａ
が夫々遊転自在に軸架される。そして又、上記メ
インシヤフト５にはドライブギヤ４とクラツチギ
ヤ６間及び両クラツチギヤ７，８間に介在させて
スプライン歯部（図示省略）が刻設され、同スプ
ライン歯部にはシンクロナイザハブ（図示省略）
を介してスリーブ１１，１１やスプライン嵌合さ
れる。そして同スリーブ１１にはその外周面に沿
つて環状溝１２が刻設され、又その両端部にはシ
ンクロナイザリング１３が連結させて設けられ
る。一方、同トランスミツシヨンケース２には複
数本のシフトフオークシヤフト１４がメインシヤ
フト５と平行せて横架され、同シフトフオークシ
ヤフト１４の一端にはシフトレバ−１５が各シフ
トフオークシヤフト１４に対して選択的に係合さ
せる事が可能な如く設けられる。即ち同シフトレ
バー１５の操作を介して各シフトフオークシヤフ
ト１４を選択的に進退移動させる事が可能な如く
設けられる。そして各シフトフオークシヤフト１
４には前述のスリーブ１１と相対応させてシフト
フオーク１０が懸架され、後述する様に同シフト
フオーク１０に形成する係合爪１７ａ，１７ｂが
環状溝１２に係合する如く設けられる。 1 is a clutch case, 2 is a transmission case, and a drive shaft 3 is horizontally suspended on the clutch case 1. Same driveshaft 3
is provided so that its rear end faces into the transmission case 2, and the drive gear 4 is installed at the rear end.
is mounted on a shaft. A main shaft 5 is mounted horizontally on the transmission case 2, facing the drive shaft 3, and a countershaft 9 is mounted parallel to the main shaft 5. Clutch gears 6, 7, and 8 are rotatably mounted on the main shaft 5, and counter gears 4A, 6A, and 4 are meshed with the drive gear 4 and the clutch gears 6, 7, and 8 on the counter shaft 9, respectively. 7A, 8A
are mounted on shafts for free rotation. Furthermore, the main shaft 5 is provided with spline teeth (not shown) interposed between the drive gear 4 and the clutch gear 6 and between the clutch gears 7 and 8, and the spline teeth have a synchronizer hub (not shown). )
The sleeves 11, 11 and spline fitting are performed through the sleeves 11, 11 and spline fitting. The sleeve 11 has an annular groove 12 cut along its outer circumferential surface, and synchronizer rings 13 are connected to both ends thereof. On the other hand, a plurality of shift fork shafts 14 are horizontally mounted in parallel with the main shaft 5 in the transmission case 2, and a shift lever 15 is provided at one end of the shift fork shaft 14 for each shift fork shaft 14. It is provided so that it can be selectively engaged. That is, each shift fork shaft 14 can be selectively moved forward or backward by operating the shift lever 15. and each shift forkshaft 1
A shift fork 10 is suspended on the shift fork 4 in correspondence with the aforementioned sleeve 11, and engaging pawls 17a and 17b formed on the shift fork 10 are provided so as to engage with the annular groove 12, as will be described later.
しかして上記シフトフオーク１０において、同
シフトフオーク１０は左右一対のフオーク片１０
Ａ，１０Ａに分割させて形成される。即ち、両フ
オーク片１０Ａ，１０Ａは上端部にボス１６，１
６を存してスリーブ１１の左右何れか一方の側面
を抱持する事が可能な如く円弧状に湾曲させて形
成され、その先端部はスリーブ５の下半部に臨む
如く設けられる。そして両フオーク片１０Ａ，１
０Ａにはその先端部に係合爪１７Ａが、又、中間
部に係合爪１７Ｂが夫々設けられる。更に詳しく
はその一方の片に設けられる係合爪１７Ａに対し
てもう一方のフオーク片に設けられる係合爪１７
Ｂが180度の変位角を存して同一直径線上にある
様に設けられる。そして両フオーク片１０Ａ，１
０Ａは上記係合爪１７Ａ，１７Ｂが環状溝１２に
係合される如く適宜の開き角を存してシフトフオ
ークシヤフト１４に対して懸架させるに、両ボス
１６，１６をシフトフオークシヤフト１４に嵌挿
させ、且つ両ボス１６，１６とシフトフオークシ
ヤフト１４間に亘つてロツクピン１８を挿通させ
る事により取り付けられる。尚上記実施例におい
ては両フオーク片１０Ａ，１０Ａに対して夫々二
個の係合爪１７Ａ，１７Ｂが設けられるが、同係
合爪の数は上記実施例に限定されるものでは無
く、二個以上設ける事が可能であり、又その数を
更に増して行く事によつて最終的にはフオーク片
１０Ａ，１０Ａの全長に亘つて連続させて設ける
事も可能である。又、シンクロナイザを具備しな
いトランスミツシヨンにおいても、ギヤを直接シ
フトフオークによつて移動させる形状のものでも
同様に実施が可能である。 In the above shift fork 10, the shift fork 10 includes a pair of left and right fork pieces 10.
It is formed by being divided into A and 10A. That is, both fork pieces 10A, 10A have bosses 16, 1 at their upper ends.
6 and is curved into an arc so that it can hold either the left or right side of the sleeve 11, and its tip is provided so as to face the lower half of the sleeve 5. And both fork pieces 10A, 1
0A is provided with an engaging pawl 17A at its tip and an engaging pawl 17B at its intermediate portion. More specifically, the engagement claw 17A provided on one fork piece and the engagement claw 17A provided on the other fork piece.
B are provided so that they are on the same diameter line with a displacement angle of 180 degrees. And both fork pieces 10A, 1
0A inserts both bosses 16, 16 into the shift fork shaft 14 so that the engaging claws 17A, 17B are suspended from the shift fork shaft 14 with an appropriate opening angle so that they are engaged with the annular groove 12. It is installed by inserting the lock pin 18 between the two bosses 16, 16 and the shift fork shaft 14. In the above embodiment, two engaging claws 17A, 17B are provided for both fork pieces 10A, 10A, respectively, but the number of engaging claws is not limited to the above embodiment, and may be two. It is possible to provide more than this, and by further increasing the number, it is also possible to finally provide them continuously over the entire length of the fork pieces 10A, 10A. Further, even in a transmission that does not include a synchronizer, it is possible to implement the present invention in the same way even if the gear is moved directly by a shift fork.
考案の効果
本考案は以上の様に構成されるものであつて、
上記の様にシフトフオークを左右一対のフオーク
片に分割形成し、両フオーク片の先端部をスリー
ブの下弦部に臨ませる事に加えて、即ち、スリー
ブの下弦部に臨ませて係合爪を設ける事が可能と
成つた事に加えて、両フオーク片には上記係合爪
を含めて夫々少なくとも二個以上の係合爪を設け
るに、各係合爪は相互に略同一の偏位角を存して
配設させた事により、スリーブのその全周面に対
して均等な押圧力加える事が出来るに至り、これ
によりギヤのシフト操作をスムーズに行なう事が
出来るに至つた。Effects of the invention The invention is constructed as described above.
As mentioned above, the shift fork is divided into a pair of left and right fork pieces, and in addition to making the tips of both fork pieces face the lower chord part of the sleeve, in other words, the engaging claw is placed so as to face the lower chord part of the sleeve. In addition, both fork pieces are each provided with at least two or more engaging claws, including the above-mentioned engaging claws, and each engaging claw has substantially the same deflection angle as each other. By arranging the sleeve, it is possible to apply an even pressing force to the entire circumferential surface of the sleeve, thereby making it possible to perform gear shifting operations smoothly.
そして又、上記の様に両フオーク片に対して二
個以上の係合爪を設け、スリーブに対するその当
たり面積を大きくした事により、スリーブに対す
る各当たり面の面圧を小さくする事が出来るに至
り、これにより係合爪部分の魔耗を減少させる事
が出来るに至つた。 Furthermore, as mentioned above, by providing two or more engaging claws on both fork pieces and increasing the contact area against the sleeve, it has become possible to reduce the surface pressure of each contact surface against the sleeve. This made it possible to reduce the wear and tear on the engaging claw portion.
第１図は本考案に係るギヤシヤフト機構を具備
するトランスミツシヨンの側断面図、第２図はシ
フトフオーク部分の拡大断面図、第３図は同側面
図である。又、第４図と第５図は従来構造を表わ
す図面であつて、第４図はシフトフオークの部分
の拡大断面図、第５図は同側面図である。
１……クラツチケース、２……トランスミツシ
ヨンケース、３……ドライブシヤフト、４……ド
ライブギヤ、５……メインシヤフト、６，７，８
……クラツチギヤ、４Ａ，６Ａ，７Ａ，８Ａ……
カウンタギヤ、９……カウンタシヤフト、１０…
…シフトフオーク、１０Ａ……フオーク片、１１
……スリーブ、１２……環状溝、１３……シンク
ロナイザリング、１４……シフトフオークシヤフ
ト、１５……シフトレバー、１６……ボス、１７
ａ，１７ｂ……係合爪、１８……ロツクピン。
FIG. 1 is a side sectional view of a transmission equipped with a gear shaft mechanism according to the present invention, FIG. 2 is an enlarged sectional view of a shift fork portion, and FIG. 3 is a side view of the same. Further, FIGS. 4 and 5 are drawings showing a conventional structure, in which FIG. 4 is an enlarged sectional view of the shift fork portion, and FIG. 5 is a side view of the same. 1...Clutch case, 2...Transmission case, 3...Drive shaft, 4...Drive gear, 5...Main shaft, 6, 7, 8
...Clutch gear, 4A, 6A, 7A, 8A...
Counter gear, 9... Counter shaft, 10...
...Shift fork, 10A...Fork piece, 11
... Sleeve, 12 ... Annular groove, 13 ... Synchronizer ring, 14 ... Shift fork shaft, 15 ... Shift lever, 16 ... Boss, 17
a, 17b...engaging claw, 18...lock pin.
Claims (1)
し、両フオーク片は上端部に形成するボスを介し
てシフトフオークシヤフトに懸架させるととも
に、上記ボスよりスリーブの上弦部から下弦部方
向に向けて円弧状に湾曲させて延在させ、その下
端部がスリーブの下弦部に臨む如く設ける一方、
両フオーク片には夫々少なくとも二個以上の係合
爪を設けるに、各係合爪は相互に略同一の偏位角
を存して配設して成るトランスミツシヨンにおけ
るギヤシフト機構。 The shift fork is divided into a pair of left and right fork pieces, and both fork pieces are suspended on the shift fork shaft via a boss formed at the upper end, and are arc-shaped from the boss toward the upper chord part of the sleeve toward the lower chord part. It is curved and extended, and the lower end thereof is provided so as to face the lower chord part of the sleeve,
A gear shift mechanism in a transmission, wherein both fork pieces are each provided with at least two or more engaging claws, and the engaging claws are arranged at substantially the same angle of deviation from each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984172166U JPH0132099Y2 (en) | 1984-11-13 | 1984-11-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984172166U JPH0132099Y2 (en) | 1984-11-13 | 1984-11-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61189318U JPS61189318U (en) | 1986-11-26 |
| JPH0132099Y2 true JPH0132099Y2 (en) | 1989-10-02 |
Family
ID=30729841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984172166U Expired JPH0132099Y2 (en) | 1984-11-13 | 1984-11-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0132099Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6756073B2 (en) * | 2017-03-02 | 2020-09-16 | 株式会社神戸製鋼所 | Speed switching reducer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57220B2 (en) * | 1976-12-02 | 1982-01-05 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57220U (en) * | 1980-05-29 | 1982-01-05 |
-
1984
- 1984-11-13 JP JP1984172166U patent/JPH0132099Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57220B2 (en) * | 1976-12-02 | 1982-01-05 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61189318U (en) | 1986-11-26 |
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