JPH0444926Y2 - - Google Patents
Info
- Publication number
- JPH0444926Y2 JPH0444926Y2 JP1985190895U JP19089585U JPH0444926Y2 JP H0444926 Y2 JPH0444926 Y2 JP H0444926Y2 JP 1985190895 U JP1985190895 U JP 1985190895U JP 19089585 U JP19089585 U JP 19089585U JP H0444926 Y2 JPH0444926 Y2 JP H0444926Y2
- Authority
- JP
- Japan
- Prior art keywords
- communication hole
- oil communication
- oil
- transmission
- lower side
- 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
Landscapes
- General Details Of Gearings (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は車両等に搭載される変速機のケース構
造に関し、とりわけ、変速機ケースに結合される
他の箱体との間にオイル連通孔が形成されるよう
になつた変速機のケース構造に関する。[Detailed description of the invention] Industrial field of application The present invention relates to the case structure of a transmission mounted on a vehicle, etc., and particularly relates to a case structure in which an oil communication hole is formed between the transmission case and another box body connected to the transmission case. This article relates to the case structure of transmissions that have come to be used.
従来の技術
この種のケース構造が用いられる変速機は、た
とえば、日産自動車株式会社（昭和55年３月）発
行のNISSANサービス周報第413号に示されるフ
オークリフトに搭載されている。即ち、この変速
機はギヤトレーンを内蔵する変速機ケースに、デ
イフアレンシヤルギヤを内蔵するデフキヤリアが
一体に結合されるようになつている。そして、前
記変速機ケース内には潤滑用のオイルが注入さ
れ、前記ギヤトレーンの潤滑が行なわれるように
なつているが、該オイルは、変速機ケースとデフ
キヤリア間の隔壁に形成されたオイル連通孔を介
してデフキヤリア内にも導入され、もつてデイフ
アレンシヤルギアの潤滑をも行なうようになつて
いる。BACKGROUND ART A transmission using this type of case structure is installed, for example, in a forklift truck as shown in NISSAN Service Bulletin No. 413 published by Nissan Motor Co., Ltd. (March 1981). That is, in this transmission, a differential carrier containing a differential gear is integrally coupled to a transmission case containing a gear train. Lubricating oil is injected into the transmission case to lubricate the gear train. It is also introduced into the differential carrier through the lubrication system, which also lubricates the differential gear.
第３図、第４図は前述したオイル連通孔１を示
し、２は変速機ケース、３はデフキヤリアであ
る。これら変速機ケース２、デフキヤリア３の隔
壁２ａ，３ａ間にはパツキング４が装着され、前
記オイル連通孔１周縁を液密的にシールするよう
になつている。前記オイル連通孔１は変速機ケー
ス２、デフキヤリア３の底部２ｂ，３ｂに接して
形成されると共に、前記パツキング４にはオイル
連通孔１の開口形状に沿つた開口部４ａが形成さ
れている。 3 and 4 show the oil communication hole 1 described above, 2 is a transmission case, and 3 is a differential carrier. A packing 4 is installed between the partition walls 2a and 3a of the transmission case 2 and the differential carrier 3, so as to liquid-tightly seal the periphery of the oil communication hole 1. The oil communication hole 1 is formed in contact with the bottoms 2b and 3b of the transmission case 2 and the differential carrier 3, and the packing 4 is formed with an opening 4a that follows the opening shape of the oil communication hole 1.
考案が解決しようとする問題点
しかしながら、かかる従来の変速機のケース構
造にあつては、前述したようにオイル連通孔１が
変速機ケース２、デフキヤリア３の底部２ｂ，３
ｂに接して形成され、かつパツキング４の開口部
４ａが前記オイル連通孔１に沿つた形状となつて
いるため、変速機ケース２、デフキヤリア３間で
摩耗粉の沈澱等により比重が大きくなつた汚れオ
イルが移動し易くなつてしまう。このため、変速
機ケース２、デフキヤリア３のうち汚れオイルの
発生が少ない側のケース内に、汚れオイル中の摩
耗粉が移動され、当該ケース内部品（ギヤトレー
ン又はデイフアレンシヤルギヤ等）の摩耗が促進
されてしまう。Problems to be Solved by the Invention However, in the conventional transmission case structure, as described above, the oil communication hole 1 is located at the bottoms 2b and 3 of the transmission case 2 and the differential carrier 3.
b, and since the opening 4a of the packing 4 is shaped along the oil communication hole 1, the specific gravity becomes large due to precipitation of wear particles between the transmission case 2 and the differential carrier 3. Dirty oil becomes easier to move. Therefore, the wear particles in the dirty oil are transferred to the transmission case 2 and the differential carrier 3, which is the one that generates less dirty oil, causing wear and tear on the parts inside the case (gear train, differential gear, etc.). is promoted.
更に、前記オイル連通孔１はオイル流通量を多
くするためある程度大きな開口面積を有してお
り、変速機ケース２又はデフキヤリア３の一方の
ケース内のボルト等の異物が何らかの理由で離脱
されたとき、このボルトが前記オイル連通孔１か
ら他方のケース内に進入し、当該ケース内の部品
をも損傷してしまうという問題点があつた。 Furthermore, the oil communication hole 1 has a relatively large opening area in order to increase the amount of oil flowing, so that if a foreign object such as a bolt in one of the transmission case 2 or the differential carrier 3 is dislodged for some reason. However, there was a problem in that this bolt entered the other case from the oil communication hole 1 and damaged the parts inside the case.
そこで本考案は、オイル連通孔とパツキングの
開口部について両者の形状及び配置に工夫を施
し、比重の大きな汚れオイルの移動を阻止すると
共に、異物の通過を阻止するようにした変速機の
ケース構造を提供することを目的とする。 Therefore, the present invention has developed a transmission case structure in which the shape and arrangement of both the oil communication hole and the packing opening are devised to prevent the movement of dirty oil with a large specific gravity, as well as to prevent the passage of foreign objects. The purpose is to provide
問題点を解決するための手段
かかる目的を達成するために本考案の変速機の
ケース構造にあつては、デフキヤリア等の筐体が
変速機ケースにパツキングを介して液密的に結合
され、これら箱体と変速機ケースの隔壁にはそれ
ぞれ底部にオイル連通孔が形成された変速機にお
いて、前記オイル連通孔位置に対応して形成され
る前記パツキングの開口部を、前記オイル連通孔
より小径の複数の小径孔で形成すると共に、該小
径孔のうち最下方に位置する小径孔の下側を、前
記オイル連通孔下側から上方にずらせて形成し、
前記小径孔下側と前記オイル連通孔下側との間を
ついたて部とすることにより構成してある。Means for Solving the Problems In order to achieve the above object, in the transmission case structure of the present invention, the housing of the differential carrier etc. is fluid-tightly connected to the transmission case through packing, and these In a transmission in which an oil communication hole is formed at the bottom of each of the partition walls of the box body and the transmission case, the opening of the packing formed in correspondence with the position of the oil communication hole has a diameter smaller than that of the oil communication hole. formed by a plurality of small diameter holes, and the lower side of the lowermost small diameter hole among the small diameter holes is shifted upward from the lower side of the oil communication hole,
A vertical portion is provided between the lower side of the small diameter hole and the lower side of the oil communication hole.
作 用
以上の構成により本考案の変速機のケース構造
にあつては、パツキングの開口部がオイル連通孔
より小径の複数の小径孔で形成されることによ
り、単一の開口面積が小さくなつて異物の通過が
阻止されると共に、最下方に位置する小径孔下側
とオイル連通孔下側との間についたて部が設けら
れたので、下方に沈澱される汚れオイルは前記つ
いたて部に阻止されて前記オイル連通孔の移動が
防止されることになる。Effect With the above configuration, in the case structure of the transmission of the present invention, the opening of the packing is formed of a plurality of small diameter holes smaller in diameter than the oil communication hole, so that the area of a single opening is reduced. In addition to preventing the passage of foreign matter, since the protruding part is provided between the lower side of the small diameter hole located at the lowest position and the lower side of the oil communication hole, the dirty oil that settles downward is blocked by the protruding part. This will prevent the oil communication hole from moving.
実施例
以下本考案の実施例を図に基づいて詳細に説明
する。Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
即ち、第１図は本考案のケース構造が用いられ
た変速機１０の一実施例を示し、１２は変速機ケ
ース、１４は該変速機ケース１２にボルト１６を
介して一体に結合される箱体としてのデフキヤリ
アである。前者の変速機ケース１２内にはギヤト
レーン１８が収納され、図外のエンジンから該ギ
ヤトレーン１８に伝達された駆動力は、後者のデ
フキヤリア１４内に収納されたデイフアレンシヤ
ルギヤ２０に伝達され、そして図外のドライブシ
ヤフトを介して駆動輪を駆動するようになつてい
る。また、２２は前記変速機ケース１２と前記デ
フキヤリア１４間に挟着されるパツキングであ
る。 That is, FIG. 1 shows an embodiment of a transmission 10 using the case structure of the present invention, 12 is a transmission case, and 14 is a box integrally connected to the transmission case 12 via bolts 16. It is a def carrier as a body. A gear train 18 is housed in the former transmission case 12, and the driving force transmitted to the gear train 18 from an engine (not shown) is transmitted to a differential gear 20 housed in the latter differential carrier 14. The drive wheels are driven via a drive shaft (not shown). Further, 22 is a packing sandwiched between the transmission case 12 and the differential carrier 14.
前記変速機ケース１２とデフキヤリア１４の隔
壁１２ａ，１４ａには、夫々のケースの底部１２
ｂ，１４ｂに接するオイル連通孔２４が形成され
ている。 The partition walls 12a and 14a of the transmission case 12 and the differential carrier 14 have a bottom portion 12 of each case.
An oil communication hole 24 is formed in contact with b and 14b.
ところで、前記パツキング２２には前記オイル
連通孔２４に対応する位置に開口部２６が形成さ
れるが、この開口部２６は第２図に示すように前
記オイル連通孔２４より小径となる複数の小径孔
２８で形成されている。これら小径孔２８のうち
最下方に位置する小径孔２８は、この小径孔２８
の下側が前記オイル連通孔２４の下側より上方に
位置するように形成され、これら小径孔２８下側
とオイル連通孔２４下側との間のパツキング２２
をついたて部３０としてある。 Incidentally, an opening 26 is formed in the packing 22 at a position corresponding to the oil communication hole 24, and as shown in FIG. It is formed by a hole 28. Among these small diameter holes 28, the small diameter hole 28 located at the lowermost part is this small diameter hole 28.
The packing 22 is formed such that the lower side thereof is located above the lower side of the oil communication hole 24, and the packing 22 is formed between the lower side of these small diameter holes 28 and the lower side of the oil communication hole 24.
It is set as a freshly placed part 30.
以上の構成により、本実施例の変速機のケース
構造にあつては、変速機ケース１２内およびデフ
キヤリア１４内のオイルは、オイル連通孔２４お
よびパツキング２２に形成された複数の小径孔２
８を介して互いに移動され、ギヤトレーン１８お
よびデイフアレンシヤルギヤ２０間で潤滑オイル
の共用化が行なわれる。 With the above configuration, in the case structure of the transmission of this embodiment, the oil in the transmission case 12 and the differential carrier 14 is drained through the oil communication hole 24 and the plurality of small diameter holes formed in the packing 22.
The lubricating oil is shared between the gear train 18 and the differential gear 20.
尚、オイル連通孔２４内に位置する前記小径孔
２８の全開口面積は、オイル通過を十分に行なえ
るように設定してあることはいうまでもない。 It goes without saying that the total opening area of the small diameter hole 28 located within the oil communication hole 24 is set to allow sufficient oil passage.
ところで、本実施例では前記オイル連通孔２４
は前記複数の小径孔２８を介して連通されるよう
になつており、従つて、これら小径孔２８は単一
では前記オイル連通孔２４に比較して著しく小径
になつているため、ボルト等の異物通過が阻止さ
れるようになつている。また、前記オイル連通孔
２４にはついたて部３０が設けられる関係上、変
速機ケース１２又はデフキヤリア１４の底部１２
ｂ，１４ｂに沈澱された摩耗粉混入の汚れオイル
は、前記ついたて部３０に阻止されるため前記オ
イル連通孔２４を通過されることは防止される。
このように本実施例においては、フイルタ部材を
用いることなく、異物の通過および汚れオイルの
通過を阻止するため、変速機ケース１２又はデフ
キヤリア１４のうち一方のケースに発生した異物
落下および多量の摩耗粉が他方のケース内部品に
悪影響（摩耗とか損傷）を与えるのが防止され
る。 By the way, in this embodiment, the oil communication hole 24
are communicated through the plurality of small-diameter holes 28, and therefore, these small-diameter holes 28 have a significantly smaller diameter than the oil communication hole 24, so that bolts, etc. Passage of foreign matter is prevented. In addition, since the oil communication hole 24 is provided with a protruding portion 30, the bottom portion 12 of the transmission case 12 or the differential carrier 14
The dirty oil mixed with the wear powder deposited on the surfaces b and 14b is blocked by the raised portion 30, and thus is prevented from passing through the oil communication hole 24.
In this way, in this embodiment, in order to prevent the passage of foreign objects and dirty oil without using a filter member, it is possible to prevent foreign objects from falling and a large amount of wear that occur in one of the transmission case 12 or the differential carrier 14. This prevents the powder from having an adverse effect (wear or damage) on the internal parts of the other case.
尚、本実施例にあつてはオイル連通孔２４およ
び小径孔２８の開口形状が円形状となつたものを
開示したが、これに限ることなく円形とは異なる
形状にしたものでもよい。また、小径孔２８は３
個設けられたものを示したが２個若しくは４個以
上でもよい。 In this embodiment, the opening shapes of the oil communication hole 24 and the small diameter hole 28 are circular, but the present invention is not limited to this, and a shape other than circular may be used. Moreover, the small diameter hole 28 has 3
Although the example shown in FIG.
考案の効果
以上説明したように本考案の変速機のケース構
造にあつては、オイル連通孔位置に対応して形成
されるパツキングの開口部をオイル連通孔より小
径の複数の小径孔で形成したため、単一の開口面
積が小さくなりボルト等の異物の通過を阻止する
ことができる。また、最下方に位置する前記小径
孔下側とオイル連通孔下側との間でついたて部を
形成したので、摩耗粉等により比重が重くなつて
下方に沈澱した汚れオイルが前記ついたて部に阻
止されてオイル連通孔を通過するのを防止するこ
とができるので、フイルタ部材を用いることな
く、簡単な構成であつて、実用価値の高い優れた
効果を奏する。Effects of the Invention As explained above, in the case structure of the transmission of the present invention, the opening of the packing formed corresponding to the position of the oil communication hole is formed by a plurality of small diameter holes smaller in diameter than the oil communication hole. , the area of a single opening becomes smaller, making it possible to prevent foreign objects such as bolts from passing through. In addition, since a protruding part is formed between the lower side of the small diameter hole located at the lowest position and the lower side of the oil communication hole, the dirty oil that becomes heavier due to abrasion particles and settles downward is blocked by the protruding part. Since the oil can be prevented from passing through the oil communication hole, the structure is simple and has excellent practical value without using a filter member.
第１図は本考案の変速機のケース構造の一実施
例を示す要部断面図、第２図は第１図中−線
からの要部拡大断面図、第３図は従来の変速機の
ケース構造の要部断面図、第４図は第３図中−
線からの断面図である。
１０……変速機、１２……変速機ケース、１４
……デフキヤリア（箱体）、２２……パツキング、
２４……オイル連通孔、２６……開口部、２８…
…小径孔、３０……ついたて部。
Fig. 1 is a sectional view of the main parts showing an embodiment of the case structure of the transmission of the present invention, Fig. 2 is an enlarged sectional view of the main parts taken from the line - - in Fig. 1, and Fig. 3 is a sectional view of the main parts of the case structure of the conventional transmission. A sectional view of the main part of the case structure, Figure 4 is in Figure 3.
FIG. 10...Transmission, 12...Transmission case, 14
...Diff carrier (box body), 22...Patzking,
24... Oil communication hole, 26... Opening, 28...
...Small diameter hole, 30...Touching part.
Claims (1)
ングを介して液密的に結合され、これら箱体と変
速機ケースの隔壁にはそれぞれ底部にオイル連通
孔が形成された変速機において、前記オイル連通
孔位置に対応して形成される前記パツキングの開
口部を、前記オイル連通孔より小径の複数の小径
孔で形成すると共に、該小径孔のうち最下方に位
置する小径孔の下側を、前記オイル連通孔下側か
ら上方にずらせて形成し、前記小径孔下側と前記
オイル連通孔下側との間をついたて部としたこと
を特徴とする変速機のケース構造。 In a transmission in which a box body such as a differential carrier is liquid-tightly coupled to a transmission case through packing, and an oil communication hole is formed at the bottom of each of the partition walls of the box body and the transmission case, the oil communication hole is The opening of the packing formed corresponding to the position is formed by a plurality of small-diameter holes smaller in diameter than the oil communication hole, and the lower side of the small-diameter hole located at the lowermost part of the small-diameter holes is formed with the oil communication hole. A case structure for a transmission, characterized in that the communication hole is formed to be shifted upward from the lower side of the communication hole, and a vertical portion is formed between the lower side of the small diameter hole and the lower side of the oil communication hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985190895U JPH0444926Y2 (en) | 1985-12-11 | 1985-12-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985190895U JPH0444926Y2 (en) | 1985-12-11 | 1985-12-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6298862U JPS6298862U (en) | 1987-06-24 |
| JPH0444926Y2 true JPH0444926Y2 (en) | 1992-10-22 |
Family
ID=31144532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985190895U Expired JPH0444926Y2 (en) | 1985-12-11 | 1985-12-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0444926Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2696329B2 (en) * | 1988-01-30 | 1998-01-14 | ヤマハ発動機株式会社 | Gear shaft lubrication device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6131581Y2 (en) * | 1981-04-03 | 1986-09-13 |
-
1985
- 1985-12-11 JP JP1985190895U patent/JPH0444926Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6298862U (en) | 1987-06-24 |
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