JPH0144858Y2 - - Google Patents
Info
- Publication number
- JPH0144858Y2 JPH0144858Y2 JP14706184U JP14706184U JPH0144858Y2 JP H0144858 Y2 JPH0144858 Y2 JP H0144858Y2 JP 14706184 U JP14706184 U JP 14706184U JP 14706184 U JP14706184 U JP 14706184U JP H0144858 Y2 JPH0144858 Y2 JP H0144858Y2
- Authority
- JP
- Japan
- Prior art keywords
- fork shaft
- shift fork
- fitting hole
- shift
- hole
- 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
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000007935 neutral effect Effects 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 206010004966 Bite Diseases 0.000 description 1
- 206010048744 Fear of falling Diseases 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion 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
- F16H2063/3079—Shift rod assembly, e.g. supporting, assembly or manufacturing of shift rails or rods; Special details thereof
Landscapes
- Mechanical Control Devices (AREA)
- Control Of Transmission Device (AREA)
- Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
- Safety Valves (AREA)
- Gear-Shifting Mechanisms (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は車両用変速機に使用されているシフト
フオークシヤフト、特に節度感が軽快であり、し
かもギア抜けの心配が無いようにしたシフトフオ
ークシヤフトを備えた車両用変速機のシフト装置
に関するものである。[Detailed description of the invention] (Industrial application field) The present invention is a shift fork shaft used in vehicle transmissions, especially a shift fork that has a light moderation feel and eliminates the fear of falling out of gear. The present invention relates to a shift device for a vehicle transmission equipped with a shaft.
（従来の技術）
一般にシフト装置に用いられているシフトフオ
ークシヤフト１は、第４図および第４図で示すよ
うに、周面側に溝２が切つてあり、この溝２にス
プリング３によつて押え付けられたボール（いわ
ゆるロケーテイングボール）４をあてがうことに
よつて、シフト時に節度感を持たせている。(Prior Art) A shift fork shaft 1, which is generally used in a shift device, has a groove 2 cut in its circumferential surface, as shown in FIGS. By applying a ball (so-called locating ball) 4 that is held down, a sense of moderation is provided during shifting.
（考案が解決しようとする問題点）
このようにシフト装置の操作時における節度感
を持たせるためには、スプリング３によりボール
４を溝２に押し付ける力はかなり弱くても良い
が、あまり弱すぎるとギヤ抜けしてしまう事があ
る。このため、スプリング３による押付荷重はあ
る程度強くしなくてはならず、シフト操作力を必
要以上に大きくしてしまうという問題点があつ
た。(Problem that the invention attempts to solve) In order to provide a sense of moderation when operating the shift device, the force pressing the ball 4 against the groove 2 by the spring 3 may be quite weak, but it is too weak. Sometimes it slips out of gear. For this reason, the pressing load applied by the spring 3 must be made strong to some extent, which poses a problem in that the shift operation force becomes larger than necessary.
このような問題点を避けるための一方法とし
て、シフトフオークシヤフトにギヤ抜け防止用の
ロケーテイングを設け、別のギヤシフトコントロ
ールシヤフトに節度用のロケーテイングを設ける
などの二重構造にしているものが考えられたが、
部品点数が増加し、構造が複雑になるという問題
点があつた。 One way to avoid such problems is to create a dual structure, such as providing locating on the shift fork shaft to prevent gear slippage, and providing locating on another gear shift control shaft for moderation. However,
There were problems in that the number of parts increased and the structure became complicated.
本考案は上記問題点を解決した車両用変速機の
シフト装置を提供するものである。 The present invention provides a shift device for a vehicle transmission that solves the above problems.
（問題点を解決するための手段）
本考案は上記問題点を解決するための手段とし
て、車両用変速機のシフト装置を構成するにあた
り、ケース６に穿設された嵌合穴７と、前記嵌合
穴７に摺動自在に嵌合されたシフトフオークシヤ
フト５と、前記シフトフオークシヤフト５の先端
部に形成され、前記シフトフオークシヤフト５が
ニユートラル位置にあるとき、前記嵌合穴７と外
部とを連通するための連通路５ｃと、前記嵌合穴
７の底部から前記ケース６の一端面に開口した連
通孔８と、前記連通孔８の前記ケース６への開口
部に設けた前記連通孔８内の圧力上昇に伴い開閉
する弁１１と、からなる車両用変速機のシフト装
置としたものである。(Means for Solving the Problems) The present invention provides a means for solving the above-mentioned problems, in which a fitting hole 7 drilled in a case 6 and a fitting hole 7 formed in a case 6, A shift fork shaft 5 is slidably fitted into the fitting hole 7, and a shift fork shaft 5 is formed at the tip of the shift fork shaft 5, and when the shift fork shaft 5 is in the neutral position, the fitting hole 7 and the outside are connected. a communication path 5c for communicating with the case 6, a communication hole 8 opened from the bottom of the fitting hole 7 to one end surface of the case 6, and the communication provided at the opening of the communication hole 8 to the case 6. This is a shift device for a vehicle transmission, which includes a valve 11 that opens and closes as the pressure inside the hole 8 increases.
（作用）
本考案は上記構成により、ケースに穿設した嵌
合穴へシフトフオークシヤフトを挿入すると、シ
フトフオークシヤフトに設けた連通路が嵌合穴の
中へ入り、嵌合穴内の圧力が上昇してシフト操作
に必要な操作力を増加させ、所定圧力以上に上昇
した場合に弁が開いて連通孔を連通させて圧力を
下降させ、シフト操作に必要な節度感が与えられ
る。逆にシフトフオークシヤフトを引抜く場合、
シフトフオークシヤフトが嵌合穴より抜け出て行
くと、連通路のシフトフオークシヤフト周面側端
部が嵌合穴に入つた状態では嵌合穴のシフトフオ
ークシヤフト非嵌合部と連通孔とが負圧になり、
弁が閉じてシフトフオークシヤフトの引抜操作力
が増加し、不用なギヤ抜けを防止する。引き抜き
操作力を増してさらにシフトフオークシヤフトを
引抜かせ、シフトフオークシヤフト周面側端部が
ケース端面より外部へ出るとシフトフオークシヤ
フト非嵌合部と連通孔の圧力が戻り操作力が軽く
なりニユートラル位置に達したことを知らせる。
このようにシフト操作時における嵌合穴の圧力上
昇おより負圧時によりシフト操作の節度感が与え
られるとともに、人為的操作をしない状態におけ
るギヤ抜きを防止することができるようになる。
このため構造が簡単で製作が容易な軽いシフト力
のシフト装置が得られるようになる。(Function) With the above configuration, when the shift fork shaft is inserted into the fitting hole drilled in the case, the communication passage provided in the shift fork shaft enters the fitting hole, and the pressure inside the fitting hole increases. This increases the operating force required for the shift operation, and when the pressure rises above a predetermined pressure, the valve opens and communicates the communication hole to lower the pressure, giving the sense of moderation necessary for the shift operation. Conversely, when pulling out the shift fork shaft,
When the shift fork shaft comes out of the fitting hole, the shift fork shaft non-fitting part of the fitting hole and the communication hole are negative when the end of the communication passage on the peripheral surface of the shift fork shaft enters the fitting hole. It becomes pressure,
The valve closes and the force required to pull out the shift fork shaft increases, preventing unnecessary gear slippage. When the pull-out operation force is increased and the shift fork shaft is pulled out further, and the peripheral end of the shift fork shaft comes out from the case end surface, the pressure between the unfitted part of the shift fork shaft and the communication hole returns, and the operation force becomes lighter and becomes neutral. Notify that the position has been reached.
In this way, a sense of moderation in the shift operation is provided by increasing the pressure in the fitting hole during the shift operation and when the pressure is negative, and it is possible to prevent the gear from being pulled out when no manual operation is performed.
Therefore, it is possible to obtain a shift device that has a simple structure, is easy to manufacture, and has a light shift force.
（実施例） 以下、本考案の図示実施例を説明する。(Example) Hereinafter, illustrated embodiments of the present invention will be described.
第１図で示すように、シフトフオークシヤフト
５を嵌合するケース６側の嵌合穴７を、シフトフ
オークシヤフト５の挿入される深さより若干深く
穿設し、嵌合穴７の最深部にはケース６の端面に
到達する連通孔８を連通させる。この連通孔８の
ケース端面側端部には、薄板片９の一端をビス１
０によりケース端面に取り付けて、薄板片９をケ
ース端面に密着させて連通孔８を密閉するように
取り付け、連通孔８の内圧が高くなつた状態で薄
板片９が撓み、圧力が抜けるようになる弁１１を
形成する。これに加えて、シフトフオークシヤフ
ト５の嵌合穴７に挿入する端部の先端面５ａと、
シフト位置がニユートラル位置の場合に、シフト
フオークシヤフト５の嵌合穴７から出ている周面
５ｂのうちケース６の端面直近の位置との間に、
嵌合穴７と外部とを連通させる軸方向に長い溝、
切欠き、または孔等で形成させた連通路５ｃを設
け、シフトフオークシヤフト５がニユートラル位
置に達した状態になると、連通路５ｃのシフトフ
オークシヤフト５の周面５ｂ側端部が嵌合穴７よ
り出て、嵌合穴７と外部との間を連通路５ｃによ
り連通させる。 As shown in FIG. 1, the fitting hole 7 on the case 6 side into which the shift fork shaft 5 is fitted is bored slightly deeper than the depth into which the shift fork shaft 5 is inserted, and the fitting hole 7 is drilled at the deepest part of the fitting hole 7. connects the communication hole 8 reaching the end face of the case 6. At the end of the communication hole 8 on the side of the case end, attach one end of the thin plate piece 9 with a screw 1.
0 to the end face of the case, and attach the thin plate piece 9 in close contact with the case end face to seal the communication hole 8, so that when the internal pressure of the communication hole 8 becomes high, the thin plate piece 9 bends and the pressure is released. A valve 11 is formed. In addition to this, a tip end surface 5a of the end portion to be inserted into the fitting hole 7 of the shift fork shaft 5;
When the shift position is the neutral position, between the peripheral surface 5b protruding from the fitting hole 7 of the shift fork shaft 5 and the position closest to the end surface of the case 6,
an axially long groove that communicates the fitting hole 7 with the outside;
A communication path 5c formed by a notch or a hole is provided, and when the shift fork shaft 5 reaches the neutral position, the end of the communication path 5c on the side of the peripheral surface 5b of the shift fork shaft 5 fits into the fitting hole 7. The fitting hole 7 and the outside are communicated with each other through a communication path 5c.
上記実施例を用いた場合の作用は、たとえばニ
ユートラルから第１速へ移行させる場合には、第
１図で示した状態より、シフトフオークシヤフト
５を嵌合穴７へ挿入する方向へ移動させ、第２図
で示すように、連通路５ｃのシフトフオークシヤ
フト５の周面５ｂ側端部が嵌合穴７に埋没する
と、シフトフオークシヤフト５の先端面５ａより
深い嵌合穴７の部分と薄板片９で密閉された連通
孔８が閉空間を形成する。このためシフトフオー
クシヤフト５が嵌合穴７へさらに挿入しようとす
ると、閉空間の中の圧力が高くなつてシフト操作
に必要な力が大きくなり、いわゆるシフトレバー
が重く感じられるようになる。さらにシフトフオ
ークシヤフト５を嵌合穴７へ挿入すると、第３図
で示すように、閉空間の内圧が高くなり薄板片９
を撓ませて、薄板片９と連通孔８との間にできた
隙間により圧力が下がり、いわゆるシフトレバー
が軽く感じられるようになる。トランスミツシヨ
ンの中がミツシヨンオイルで充満していれば嵌合
穴７の中と外でミツシヨンオイルが第１図の矢印
および第３図の矢印で示すように出入りし、
シフトレバーの重さ、軽さを確実に操作する人の
手に伝達して、いわゆるシフト操作における節度
感を与える。また、第３図の状態で連通孔８を通
して圧力が下がり、薄板片９がケース６の端面に
密着すると、シフトフオークシヤフト５が嵌合穴
７に対して挿入あるいは引抜き方向へ移動しよう
とすると、閉空間の圧力上昇あるいは圧力降下が
生じてシフトフオークシヤフト５を移動させない
方向に力を加える。このためいわゆるギヤ抜けを
防止することになる。 The effect when using the above embodiment is that, for example, when shifting from neutral to first speed, the shift fork shaft 5 is moved in the direction of insertion into the fitting hole 7 from the state shown in FIG. As shown in FIG. 2, when the end of the communication path 5c on the side of the peripheral surface 5b of the shift fork shaft 5 is buried in the fitting hole 7, the part of the fitting hole 7 deeper than the distal end surface 5a of the shift fork shaft 5 and the thin plate The communication hole 8 sealed with the piece 9 forms a closed space. Therefore, when the shift fork shaft 5 attempts to insert further into the fitting hole 7, the pressure in the closed space increases, and the force required for the shift operation increases, making the shift lever feel heavy. When the shift fork shaft 5 is further inserted into the fitting hole 7, the internal pressure of the closed space increases and the thin plate piece 9
When the shift lever is bent, the pressure decreases due to the gap created between the thin plate piece 9 and the communication hole 8, so that the so-called shift lever feels lighter. If the transmission is filled with transmission oil, the transmission oil will flow in and out of the fitting hole 7 as shown by the arrows in Figure 1 and the arrows in Figure 3.
The weight and lightness of the shift lever are surely transmitted to the operator's hand, giving a sense of so-called moderation in shift operations. Furthermore, when the pressure decreases through the communication hole 8 in the state shown in FIG. A force is applied in a direction that causes a pressure rise or a pressure drop in the closed space and prevents the shift fork shaft 5 from moving. This prevents so-called gear slippage.
逆に、たとえば第１速からニユートラルへ戻す
場す場合、連通路５ｃが嵌合穴７に埋没した状態
からシフトフオークシヤフト５を嵌合穴７より引
抜く方向へ移動させる場合には、第３図の薄板片
９がケース６の端面に密着した状態でシフトフオ
ークシヤフト５を嵌合穴７より引抜く方向に移動
させる時、閉空間の容積が大きくなる方向に移動
するため、負圧となり、シフトフオークシヤフト
５が抜けにくくなつて、いわゆるシフトレバーが
重く感じられる。さらにシフト操作力を強くして
第２図から第１図の状態に移行すると、嵌合穴７
より出た連通路５ｃの端部より連通路５ｃを経て
嵌合穴７および連通孔８の圧力が回復し、いわゆ
るシフトレバーが軽く感じられるようになる。 Conversely, when returning from the first gear to neutral, for example, when moving the shift fork shaft 5 from the state in which the communication passage 5c is buried in the fitting hole 7 in the direction of pulling it out from the fitting hole 7, the third When the shift fork shaft 5 is moved in the direction of pulling it out from the fitting hole 7 while the thin plate piece 9 shown in the figure is in close contact with the end surface of the case 6, the closed space moves in the direction of increasing the volume, resulting in negative pressure. The shift fork shaft 5 becomes difficult to remove, and the so-called shift lever feels heavy. When the shift operation force is increased further and the state shown in Fig. 1 is changed from Fig. 2, the fitting hole 7
The pressure in the fitting hole 7 and the communication hole 8 is restored from the end of the communication path 5c that protrudes through the communication path 5c, so that the so-called shift lever feels lighter.
上記実施例では弁１１を薄板片９のビス止めに
より形成したが、たとえば２サイクルエンジンの
リードバルブのようなものでも良い。 In the above embodiment, the valve 11 is formed by screwing the thin plate piece 9, but it may also be a reed valve for a two-stroke engine, for example.
このように上記実施例では、ロケーテイングボ
ールが不要になり、組み付けが容易になつて、作
業時間が短縮される。節度用のロケーテイングを
付ける時にも充分に軽くでき、シフト力が少なく
てすむためシフト装置の性能が向上する。シヤフ
ト５にロケーテイング溝用の熱処理等をしなくて
も良くなり経費節減となる。何本かのシフトフオ
ークシヤフトがあつても、通路をつなぐことによ
り１ケ所のバルブですみ、従来のように１本のシ
フトフオークシヤフトに１個のロケーテイングを
必要とするものに比較して構造が簡単で費用が安
くなる。 As described above, in the above embodiment, a locating ball is not required, making assembly easier and reducing working time. It can be made sufficiently light even when locating for moderation is attached, and the performance of the shift device is improved because less shifting force is required. There is no need to heat treat the shaft 5 for locating grooves, resulting in cost savings. Even if there are several shift fork shafts, only one valve is required by connecting the passages, which makes the structure simpler compared to conventional systems that require one locating for each shift fork shaft. It's easier and cheaper.
（考案の効果）
以上のように本考案は、シフトフオークシヤフ
トとケースの嵌合穴とにより形成される空間の圧
力上昇あるいは圧力降下を利用してシフト操作時
の節度感を与えるとともに、ギヤ抜けを防止する
シフト装置を構成したため、構造が簡単で製作が
容易な軽いシフト力のシフト装置が得られる。構
造が簡単なため組み立て作業が容易で作業時間が
短縮される。従つて構造および製造上の経費が削
減できる。(Effects of the invention) As described above, the present invention utilizes the pressure increase or pressure drop in the space formed by the shift fork shaft and the fitting hole of the case to provide a sense of moderation during shift operation, and to prevent gears from slipping out. Since the shift device is configured to prevent this, it is possible to obtain a shift device that has a simple structure, is easy to manufacture, and has a light shifting force. The simple structure makes assembly easy and reduces work time. Construction and manufacturing costs can therefore be reduced.
第１図は本考案によるシフト装置のシフトフオ
ークシヤフト先端部を示す縦断面図、第２図は本
考案によるシフト装置のシフトフオークシヤフト
先端部に形成した連通路が嵌合穴に完全に埋没し
た時点における状態を示す縦断面説明図、第３図
は本考案によるシフト装置のシフトフオークシヤ
フト先端部が嵌合穴へ深く入り弁が開いた状態を
示す縦断面説明図、第４図は従来のシフト装置を
示す部分断面図、第５図は第４図の−線に沿
う断面図である。
５……シフトフオークシヤフト、５ａ……先端
面、５ｂ……周面、５ｃ……連通路、６……ケー
ス、７……嵌合穴、８……連通孔、９……薄板
片、１０……ビス、１１……弁。
Fig. 1 is a vertical cross-sectional view showing the tip of the shift fork shaft of the shift device according to the present invention, and Fig. 2 shows the communication passage formed at the tip of the shift fork shaft of the shift device according to the present invention completely buried in the fitting hole. FIG. 3 is an explanatory longitudinal cross-sectional view showing a state in which the tip of the shift fork shaft of the shift device according to the present invention has entered deeply into the fitting hole and the valve is open; FIG. FIG. 5 is a partial sectional view showing the shift device, and FIG. 5 is a sectional view taken along the - line in FIG. 4. 5... Shift fork shaft, 5a... Tip surface, 5b... Circumferential surface, 5c... Communication path, 6... Case, 7... Fitting hole, 8... Communication hole, 9... Thin plate piece, 10 ...Biss, 11...Valve.
Claims (1)
オークシヤフト５と、 前記シフトフオークシヤフト５の先端部に形成
され、前記シフトフオークシヤフト５がニユート
ラル位置にあるとき、前記嵌合穴７と外部とを連
通するための連通路５ｃと、 前記嵌合穴７の底部から前記ケース６の一端面
に開口した連通孔８と、 前記連通孔８の前記ケース６への開口部に設け
た前記連通孔８内の圧力上昇に伴い開閉する弁１
１と、 からなることを特徴とする車両用変速機のシフト
装置。[Claims for Utility Model Registration] A fitting hole 7 bored in the case 6, a shift fork shaft 5 slidably fitted in the fitting hole 7, and a tip end of the shift fork shaft 5. a communication path 5c for communicating the fitting hole 7 with the outside when the shift fork shaft 5 is in the neutral position; and a communication path 5c opening from the bottom of the fitting hole 7 to one end surface of the case 6. a communication hole 8; and a valve 1 provided at the opening of the communication hole 8 to the case 6, which opens and closes as the pressure inside the communication hole 8 increases.
1. A shift device for a vehicle transmission, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14706184U JPH0144858Y2 (en) | 1984-09-28 | 1984-09-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14706184U JPH0144858Y2 (en) | 1984-09-28 | 1984-09-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6161367U JPS6161367U (en) | 1986-04-25 |
| JPH0144858Y2 true JPH0144858Y2 (en) | 1989-12-25 |
Family
ID=30705300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14706184U Expired JPH0144858Y2 (en) | 1984-09-28 | 1984-09-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0144858Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6970189B2 (en) * | 2017-04-28 | 2021-11-24 | 日東電工株式会社 | Ventilation unit |
-
1984
- 1984-09-28 JP JP14706184U patent/JPH0144858Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6161367U (en) | 1986-04-25 |
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