JPH02304220A - Balk ring for clutch type transmission - Google Patents
Balk ring for clutch type transmissionInfo
- Publication number
- JPH02304220A JPH02304220A JP12296789A JP12296789A JPH02304220A JP H02304220 A JPH02304220 A JP H02304220A JP 12296789 A JP12296789 A JP 12296789A JP 12296789 A JP12296789 A JP 12296789A JP H02304220 A JPH02304220 A JP H02304220A
- Authority
- JP
- Japan
- Prior art keywords
- gear
- balk ring
- clutch
- balk
- ring
- 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
- 230000005540 biological transmission Effects 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 238000005121 nitriding Methods 0.000 abstract description 3
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/02—Arrangements for synchronisation, also for power-operated clutches
- F16D23/025—Synchro rings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/08—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/241—Chemical after-treatment on the surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2250/00—Manufacturing; Assembly
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Operated Clutches (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明はフォークリフトトラックのような産業車両に
搭載されたクラッチ式変速機のボークリングに間する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to balk ringing of a clutch type transmission mounted on an industrial vehicle such as a forklift truck.
（従来の技術）
従来フォークリフトトラックやショベルローダのような
産業車両にはクラッチ式の変速機が搭載されていて、変
速機には各速度段−・の変速を容易とするためシンクロ
機構が設けられている。(Prior art) Conventionally, industrial vehicles such as forklift trucks and shovel loaders are equipped with clutch-type transmissions, and the transmissions are equipped with synchronization mechanisms to facilitate shifting between each speed range. ing.
上記シンクロ機構には第１図に示すようなボークリング
が設けられていて、変速時内周面が変速ギヤと摩擦接触
することにより速度の遅い変速ギヤを増速しでクラッチ
ギヤとの回転差をなくシ、クラッチと変速ギヤの間が円
滑に接触できるようになっている。The above synchronizer mechanism is equipped with a balk ring as shown in Fig. 1, and its inner circumferential surface comes into frictional contact with the speed change gear during gear shifting, thereby increasing the speed of the slow speed change gear and reducing the rotational difference with the clutch gear. This eliminates the need for smooth contact between the clutch and the transmission gear.
また従来のボークリングが耐摩耗性及び摩擦特性を高め
るため銅合金が使用されている。Copper alloys have also been used in conventional baulk rings to increase their wear resistance and friction properties.
（発明が解決しようとする課題）
しかし銅合金よりなるボークリングはコストが高い欠点
がある。(Problems to be Solved by the Invention) However, the baulk ring made of copper alloy has the disadvantage of high cost.
この発明は上記欠点を改善する目的でなされたもので１
ｗ４合金よりなるボークリングと同し。This invention was made for the purpose of improving the above-mentioned drawbacks.1
Same as balk ring made of W4 alloy.
特性を有する変速機のボークリングを安価に提供しよう
とするものである。The purpose of this invention is to provide a transmission balk ring with special characteristics at a low cost.
（課題を解決するための手段及び作用）この発明は上記
目的を達成するために、各速度段及び前後段の切換えを
クラッチにより行うクラッチ式変速機において、上記変
速機の各速皮膜及び前後段に設けられたシンクロ機構の
ボークリングを焼結鋼により形成すると共に１表面にス
チーム処理及びタフトライド処理を施したことにより、
銅合金と同程度の耐摩耗性及び摩擦特性を有するボーク
リングを安価に提供しようとするものである。(Means and Effects for Solving the Problems) In order to achieve the above object, the present invention provides a clutch type transmission in which each speed gear and the front and rear gears are switched by a clutch. By forming the baulk ring of the synchronizing mechanism installed in the sintered steel from sintered steel and applying steam treatment and tufftride treatment to one surface,
The objective is to provide a balk ring having wear resistance and friction characteristics comparable to those of copper alloys at a low cost.
（実施例） この発明の一実施例を図面を参照して詳述する。(Example) An embodiment of the present invention will be described in detail with reference to the drawings.
第２図はこの発明のボークリング１５が使用されている
変速機ｌの断面図を示すもので、ケース２内に入力軸３
とアイドラ軸４及び出力軸５が互に平行するように設け
られており１図示しないエンジンからの動力は入力軸３
へ人力される。FIG. 2 shows a sectional view of a transmission l in which the balk ring 15 of the present invention is used.
An idler shaft 4 and an output shaft 5 are provided so as to be parallel to each other.1 Power from an engine (not shown) is transmitted to an input shaft 3.
is manually powered.
入力軸３とアイドラ軸４には１速段と２速段のギヤ６．
７と、前進段Ｆ及び後進段Ｒのギヤ８．９がそれぞれ設
けられていると共に、アイドラ軸４と出力軸５の間は終
段ギヤ１０により接続されていて、アイドラ軸４の回転
が出力軸５に出力されるようになっている。The input shaft 3 and the idler shaft 4 are provided with 1st and 2nd speed gears 6.
7, gears 8 and 9 for forward gear F and reverse gear R are respectively provided, and the idler shaft 4 and output shaft 5 are connected by a final gear 10, and the rotation of the idler shaft 4 is output. It is designed to be output to axis 5.
ま−たアイドラ軸４に設けられたｌ速段及び２速段のギ
ヤ６．７と、前進段Ｆ及び後進段Ｒのギヤ８．９の間に
はクラッチギヤ１２とシフタ１３によりシフトされるク
ラッチリング１４及びクラッチギヤ１２の両側にボーク
リング１５がそれぞれ設けられている。Furthermore, a clutch gear 12 and a shifter 13 are used to shift gears between the gears 6.7 for the L and 2nd gears provided on the idler shaft 4 and the gears 8.9 for the forward gear F and reverse gear R. Balk rings 15 are provided on both sides of the clutch ring 14 and clutch gear 12, respectively.
上記ボークリング１５は内周面に各ギヤ６ないし９に設
けられたテーバ部６ａないし９ａと７擦接触するテーバ
面１５ａが、そして外周面にクラッチリング１４の内周
面に設けられた歯と噛合する歯がそれぞれ設けられてい
て、後述する作用でクラッチギヤ１２と各ギヤ６ないし
９のシンクロ動作を行うようになっている。The balk ring 15 has a tapered surface 15a on its inner circumferential surface that makes seven friction contact with the tapered portions 6a to 9a provided on each of the gears 6 to 9, and teeth provided on the inner circumferential surface of the clutch ring 14 on its outer circumferential surface. Each tooth is provided with meshing teeth, and the clutch gear 12 and each of the gears 6 to 9 are synchronized by an action described later.
一方上記ボークリング１５は焼結鋼により全体が成形さ
れていて、耐摩耗性及び摩擦特性を高めるため１表面が
スチーム処理とタフトライド（軟窒化）処理が施されて
いる。On the other hand, the balk ring 15 is entirely molded from sintered steel, and one surface is subjected to steam treatment and tuftride (soft nitriding) treatment to improve wear resistance and friction characteristics.
次に上記ボークリング１５の使用された変速機の作用を
説明すると、いま１速段より２速段へ変速する場合、１
速段ギヤ６とクラッチギヤ１２を結合してなるクラッチ
１４をシフタ１３により２速段ギヤ７側ヘシフトさせる
。Next, to explain the operation of the transmission in which the Baulkling 15 is used, when shifting from the 1st gear to the 2nd gear, the 1
A clutch 14 formed by coupling a speed gear 6 and a clutch gear 12 is shifted to the second speed gear 7 side by a shifter 13.
これによって２速段ギヤ７のボークリング１５が２速段
ギヤ７のテーバ部７ａへ圧接されて１両者間の摩擦によ
り２速段ギヤ７が増速され、クラッチギヤ１２と２速段
ギヤ７の回転速度差がなくなったところで、クラッチ１
４だ２速段ギヤ７と係合し、以後入力軸４の回転は２速
段ギヤ７を経てアイドラ軸５へ伝達されるようになる。As a result, the balk ring 15 of the 2nd speed gear 7 is pressed against the tapered portion 7a of the 2nd speed gear 7, and the speed of the 2nd speed gear 7 is increased due to friction between the two, and the clutch gear 12 and the 2nd speed gear 7 are When the difference in rotational speed disappears, clutch 1
4 engages with the 2nd speed gear 7, and thereafter the rotation of the input shaft 4 is transmitted to the idler shaft 5 via the 2nd speed gear 7.
なお前後段Ｆ及び後進段Ｒのシンクロ動作も同様なので
説明は省略する。Note that the synchronizing operations of the front and rear gears F and the reverse gear R are also similar, so a description thereof will be omitted.
また上記変速機はフォークリフトトラックやシラペルロ
ーダなどの産業車両や建設機械などに主として搭載され
るが、勿論上記以外の車両にも適用できるものである。Further, although the above-mentioned transmission is mainly installed in industrial vehicles such as forklift trucks and shell loaders, and construction machines, it can of course be applied to other vehicles as well.
（発明の効果）
この発明は以上詳述したように変速機のシンクロ機構に
設けられたボークリングを焼結鋼により形成すると共に
、スチーム処理及びタフトライド処理により表面処理を
施して耐摩耗性及び摩擦特性を向上させたことから、従
来の銅合金よりなるボークリングと同程度の耐摩耗性及
び摩擦特性を有しながらコストは数分の１程度となり、
非常に経済的である。(Effects of the Invention) As described in detail above, this invention forms the balk ring provided in the synchronizing mechanism of a transmission from sintered steel, and also performs surface treatment using steam treatment and tufftride treatment to improve wear resistance and friction. Due to improved properties, it has the same wear resistance and friction properties as conventional copper alloy baulk rings, but at a fraction of the cost.
Very economical.
図面はこの発明の一実施例を示し、第１図はボークリン
グの斜視図、第２図はボークリングを使用した変速機の
断面図である。
ｌ・・・変速機、１５・・・ボークリング。The drawings show one embodiment of the present invention, and FIG. 1 is a perspective view of a balk ring, and FIG. 2 is a sectional view of a transmission using the balk ring. l...transmission, 15...balk ring.
Claims (1)
チ式変速機において、上記変速機の各速度段及び前後段
に設けられたシンクロ機構のボークリング１５を焼結鋼
により形成すると共に、表面にスチーム処理及びタフト
ライド処理を施してなるクラッチ式変速機のボークリン
グ。In a clutch type transmission in which switching between each speed stage and the front and rear stages is performed by a clutch, the synchronizing mechanism balk ring 15 provided at each speed stage and the front and rear stages of the transmission is formed of sintered steel, and the surface is made of steam. Balk ring of clutch type transmission which is treated with treatment and tufftride treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12296789A JPH02304220A (en) | 1989-05-18 | 1989-05-18 | Balk ring for clutch type transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12296789A JPH02304220A (en) | 1989-05-18 | 1989-05-18 | Balk ring for clutch type transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02304220A true JPH02304220A (en) | 1990-12-18 |
Family
ID=14849038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12296789A Pending JPH02304220A (en) | 1989-05-18 | 1989-05-18 | Balk ring for clutch type transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02304220A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19837583C1 (en) * | 1998-08-19 | 2000-03-30 | Daimler Chrysler Ag | Synchronizer for a manual transmission |
| DE19736188C2 (en) * | 1996-08-30 | 2003-02-06 | Nippon Piston Ring Co Ltd | synchronizing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61195904A (en) * | 1985-02-26 | 1986-08-30 | Mitsubishi Metal Corp | Pretreatment for plating ferrous sintered alloy member |
| JPS6323049A (en) * | 1986-07-14 | 1988-01-30 | Toyota Motor Corp | Clutch gear of synchronous device |
-
1989
- 1989-05-18 JP JP12296789A patent/JPH02304220A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61195904A (en) * | 1985-02-26 | 1986-08-30 | Mitsubishi Metal Corp | Pretreatment for plating ferrous sintered alloy member |
| JPS6323049A (en) * | 1986-07-14 | 1988-01-30 | Toyota Motor Corp | Clutch gear of synchronous device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19736188C2 (en) * | 1996-08-30 | 2003-02-06 | Nippon Piston Ring Co Ltd | synchronizing |
| DE19837583C1 (en) * | 1998-08-19 | 2000-03-30 | Daimler Chrysler Ag | Synchronizer for a manual transmission |
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