JP2012067710A - Sealing device for engine transmission case - Google Patents

Sealing device for engine transmission case Download PDF

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Publication number
JP2012067710A
JP2012067710A JP2010214815A JP2010214815A JP2012067710A JP 2012067710 A JP2012067710 A JP 2012067710A JP 2010214815 A JP2010214815 A JP 2010214815A JP 2010214815 A JP2010214815 A JP 2010214815A JP 2012067710 A JP2012067710 A JP 2012067710A
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collar
transmission
sealing device
engine
transmission case
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JP5496039B2 (en
Inventor
Manabu Miyazaki
学 宮▲崎▼
Hiroki Oso
洋樹 尾曽
Nobuhiro Yamamoto
信裕 山本
Shin Fukada
神 深田
Kazuhiko Ogura
和彦 小倉
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Kubota Corp
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Kubota Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a sealing device for an engine transmission case which dispenses with the exchange of a collar.SOLUTION: The sealing device for the engine transmission case is configured so that: a rotary transmission shaft 2 is inserted into the transmission case 1; an inner transmission ring 4 is fitted to the outer periphery of the rotary transmission shaft 2 in the transmission case 1; a transmission shaft inserting hole 5 is perforated on the case wall 3 of the transmission case 1; the rotary transmission shaft 2 is projected to the outside of the transmission case 1 through the transmission shaft inserting hole 5; an outer part transmission ring 7 is fitted to the outer periphery of the projected part 6 of the rotary transmission shaft 2 at the outside of the transmission case 1; the collar 8 is fitted to the outer periphery of the rotary transmission shaft 2 in the transmission shaft inserting hole 5; an oil seal 9 is fitted to the inner periphery of the transmission shaft inserting hole 5; and the oil seal 9 abuts on the outer peripheral surface 8a of the collar 8. In the sealing device for the engine transmission case, a nitriding proceeding layer is formed on the outer peripheral surface 8a of the collar 8.

Description

本発明は、エンジンの伝動ケースの密封装置に関し、詳しくは、カラーの交換が不要になるエンジンの伝動ケースの密封装置に関する。   The present invention relates to a sealing device for an engine transmission case, and more particularly to a sealing device for an engine transmission case that eliminates the need to replace a collar.

従来、エンジンの伝動ケースの密封装置として、伝動ケース内に回転伝動軸を挿通し、伝動ケース内で回転伝動軸の外周に内部伝動輪を嵌め、伝動ケースのケース壁に伝動軸挿通孔をあけ、伝動軸挿通孔を介して伝動ケース外に回転伝動軸に突出させ、伝動ケース外で回転伝動軸の突出部の外周に外部伝動輪を嵌め、伝動軸挿通孔内で回転伝動軸の外周にカラーを嵌め、伝動軸挿通孔の内周にオイルシールを嵌め、オイルシールをカラーの外周面に接当させたものがある(例えば、特許文献1参照)。
この種の密封装置によれば、伝動ケース内のオイルが伝動軸挿通孔から伝動ケース外に漏れ出すのを防止することができる利点がある。
しかし、従来、この種の密封装置では、通常、カラーの外周面に硬質クロムメッキ処理層を形成しているため、問題がある。
Conventionally, as a sealing device for an engine transmission case, a rotation transmission shaft is inserted into the transmission case, an internal transmission wheel is fitted around the outer periphery of the rotation transmission shaft in the transmission case, and a transmission shaft insertion hole is formed in the case wall of the transmission case. , Make the rotating transmission shaft project outside the transmission case through the transmission shaft insertion hole, fit the external transmission wheel on the outer periphery of the protruding portion of the rotation transmission shaft outside the transmission case, and on the outer periphery of the rotation transmission shaft in the transmission shaft insertion hole There is a type in which a collar is fitted, an oil seal is fitted to the inner periphery of the transmission shaft insertion hole, and the oil seal is brought into contact with the outer peripheral surface of the collar (for example, see Patent Document 1).
According to this type of sealing device, there is an advantage that oil in the transmission case can be prevented from leaking out of the transmission case through the transmission shaft insertion hole.
However, this type of sealing device has a problem since a hard chrome plating layer is usually formed on the outer peripheral surface of the collar.

実開平6−22552号公報(図1参照)Japanese Utility Model Publication No. 6-22552 (refer to FIG. 1)

《問題》 カラーの交換が必要になる。
カラーの外周面に硬質クロムメッキ処理層を形成しているため、カラーの耐久性が十分ではなく、エンジンの耐用年数を越える耐久性を得ることができ、カラーの交換が必要になる。
<Problem> The color needs to be changed.
Since the hard chrome plating layer is formed on the outer peripheral surface of the collar, the durability of the collar is not sufficient, the durability exceeding the service life of the engine can be obtained, and the color needs to be replaced.

本発明の課題は、カラーの交換が不要になるエンジンの伝動ケースの密封装置を提供することにある。   An object of the present invention is to provide a sealing device for an engine transmission case that does not require replacement of a collar.

請求項1に係る発明の発明特定事項は、次の通りである。
図1〜図6の各(A)〜(C)に例示するように、伝動ケース(1)内に回転伝動軸(2)を挿通し、伝動ケース(1)内で回転伝動軸(2)の外周に内部伝動輪(4)を嵌め、伝動ケース(1)のケース壁(3)に伝動軸挿通孔(5)をあけ、伝動軸挿通孔(5)を介して伝動ケース(1)外に回転伝動軸(2)に突出させ、伝動ケース(1)外で回転伝動軸(2)の突出部(6)の外周に外部伝動輪(7)を嵌め、伝動軸挿通孔(5)内で回転伝動軸(2)の外周にカラー(8)を嵌め、伝動軸挿通孔(5)の内周にオイルシール(9)を嵌め、オイルシール(9)をカラー(8)の外周面(8a)に接当させた、エンジンの伝動ケースの密封装置において、
カラー(8)の外周面(8a)に窒化処理層を形成した、ことを特徴とするエンジンの伝動ケースの密封装置。
Invention specific matters of the invention according to claim 1 are as follows.
As illustrated in FIGS. 1 to 6 (A) to (C), the rotation transmission shaft (2) is inserted into the transmission case (1), and the rotation transmission shaft (2) is inserted into the transmission case (1). The inner transmission wheel (4) is fitted on the outer circumference of the transmission case, a transmission shaft insertion hole (5) is made in the case wall (3) of the transmission case (1), and the transmission case (1) is externally connected via the transmission shaft insertion hole (5). The outer transmission wheel (7) is fitted on the outer periphery of the projecting portion (6) of the rotary transmission shaft (2) outside the transmission case (1), and is projected into the transmission shaft insertion hole (5). Fit the collar (8) to the outer periphery of the rotary transmission shaft (2), fit the oil seal (9) to the inner periphery of the transmission shaft insertion hole (5), and attach the oil seal (9) to the outer peripheral surface of the collar (8) ( In the sealing device for the transmission case of the engine in contact with 8a)
A sealing device for an engine transmission case, wherein a nitrided layer is formed on the outer peripheral surface (8a) of the collar (8).

(請求項1に係る発明)
請求項1に係る発明は、次の効果を奏する。
《効果》 カラーの交換が不要になる。
カラー(8)の外周面(8a)に窒化処理層を形成したので、カラー(8)の耐摩耗性が優れ、エンジンの耐用年数を越える耐久性を得ることができ、カラー(8)の交換が不要になる。
(Invention of Claim 1)
The invention according to claim 1 has the following effects.
<Effect> Color replacement is not required.
Since the nitriding layer is formed on the outer peripheral surface (8a) of the collar (8), the collar (8) has excellent wear resistance, and can have durability exceeding the service life of the engine. Is no longer necessary.

(請求項2に係る発明)
請求項2に係る発明は、請求項1に係る発明の効果に加え、次の効果を奏する。
《効果》 カラーの潤滑性が高い。
窒化処理層の最表面に浸硫処理層を設けたので、カラー(8)の潤滑性が高い。
(Invention of Claim 2)
The invention according to claim 2 has the following effect in addition to the effect of the invention according to claim 1.
<Effect> Color lubricity is high.
Since the sulfuration treatment layer is provided on the outermost surface of the nitriding treatment layer, the lubricity of the collar (8) is high.

(請求項3に係る発明)
請求項3に係る発明は、請求項1または請求項2に係る発明の効果に加え、次の効果を奏する。
《効果》 カラーからのオイル漏れを防止することができる。
図1〜図6の各(A)(B)に例示するように、回転伝動軸(2)の軸長方向を前後方向として、カラー(8)を前後対称形状としたので、回転伝動軸(2)にカラー(8)を両端部のどちらから嵌め込んでも、カラー(8)の組み間違いが起こらず、これに起因するカラー(8)からのオイル漏れを防止することができる。
(Invention of Claim 3)
The invention according to claim 3 has the following effect in addition to the effect of the invention according to claim 1 or claim 2.
<Effect> Oil leakage from the collar can be prevented.
As illustrated in FIGS. 1 to 6 (A) and (B), the axial length direction of the rotary transmission shaft (2) is the front-rear direction, and the collar (8) is symmetrically shaped. Even if the collar (8) is fitted to either end of 2), there is no mistake in assembling the collar (8), and oil leakage from the collar (8) due to this can be prevented.

《効果》 カラーの組み付け作業が簡単になる。
図1〜図6の各(A)(B)に例示するように、回転伝動軸(2)の軸長方向を前後方向として、カラー(8)を前後対称形状としたので、回転伝動軸(2)にカラー(8)を両端部のどちらから嵌め込んでも、カラー(8)の組み間違いが起こらず、カラー(8)の組み付け作業が簡単になる。
<Effect> Color assembly work is simplified.
As illustrated in FIGS. 1 to 6 (A) and (B), the axial length direction of the rotary transmission shaft (2) is the front-rear direction, and the collar (8) is symmetrically shaped. Even if the collar (8) is fitted into 2) from either end, no mistake in assembly of the collar (8) occurs, and the assembly work of the collar (8) is simplified.

(請求項4に係る発明)
請求項4に係る発明は、請求項1から請求項3のいずれかに係る発明の効果に加え、次の効果を奏する。
《効果》 カラーからのオイル漏れを防止することができる。
図1(A)〜(D)に例示するように、回転伝動軸(2)に内部伝動輪(4)をキー(10)とキー溝(11)で廻り止めし、外部伝動輪(7)と内部伝動輪(4)との間にカラー(8)を挟み付けるに当たり、カラー(8)と内部伝動輪(4)との間にガスケット(12)を挟み、このガスケット(12)を内部伝動輪(4)の端面(13)のキー溝開口(14)よりも径方向外側で内部伝動輪(4)の端面(13)とカラー(8)との間に挟み付けたので、封止面積が小さいキー溝開口(14)よりも径方向外側の部分をガスケット(12)で強力に封止することができ、伝動ケース(1)内のエンジンオイルが回転伝動軸(2)とカラー(8)との隙間に進入しにくく、カラー(8)からのオイル漏れを防止することができる。
(Invention of Claim 4)
The invention according to claim 4 has the following effects in addition to the effects of the invention according to any one of claims 1 to 3.
<Effect> Oil leakage from the collar can be prevented.
As illustrated in FIGS. 1 (A) to (D), the internal transmission wheel (4) is prevented from rotating around the rotary transmission shaft (2) by the key (10) and the key groove (11), and the external transmission wheel (7). When the collar (8) is sandwiched between the inner transmission wheel (4) and the inner transmission wheel (4), the gasket (12) is sandwiched between the collar (8) and the inner transmission wheel (4). Since it is sandwiched between the end face (13) of the internal transmission wheel (4) and the collar (8) outside the keyway opening (14) of the end face (13) of the ring (4), the sealing area The portion outside the keyway opening (14) having a small diameter can be strongly sealed with the gasket (12), and the engine oil in the transmission case (1) is transferred to the rotary transmission shaft (2) and the collar (8). ) To prevent oil leakage from the collar (8).

(請求項5に係る発明)
請求項5に係る発明は、請求項1から請求項3のいずれかに係る発明の効果に加え、次の効果を奏する。
《効果》 カラーからのオイル漏れを防止することができる。
図2(A)〜(D)に例示するように、回転伝動軸(2)に内部伝動輪(4)をキー(10)とキー溝(11)で廻り止めし、外部伝動輪(7)と内部伝動輪(4)との間にカラー(8)を挟み付けるに当たり、カラー(8)の端面(15)の外周に沿ってOリング嵌合部(16)を設け、このOリング嵌合部(16)にOリング(17)を嵌合させ、このOリング(17)を内部伝動輪(4)の端面(13)のキー溝開口(14)よりも径方向外側で内部伝動輪(4)の端面(13)とカラー(8)との間に挟み付けたので、封止面積が小さいキー溝開口(14)よりも径方向外側の部分をOリング(17)で強力に封止することができ、伝動ケース(1)内のエンジンオイルが回転伝動軸(2)とカラー(8)との隙間に進入しにくく、カラー(8)からのオイル漏れを防止することができる。
(Invention according to claim 5)
The invention according to claim 5 has the following effects in addition to the effects of the invention according to any one of claims 1 to 3.
<Effect> Oil leakage from the collar can be prevented.
As illustrated in FIGS. 2 (A) to 2 (D), the internal transmission wheel (4) is prevented from rotating around the rotary transmission shaft (2) by the key (10) and the key groove (11), and the external transmission wheel (7). When the collar (8) is sandwiched between the inner transmission wheel (4) and the inner transmission wheel (4), an O-ring fitting portion (16) is provided along the outer periphery of the end face (15) of the collar (8). An O-ring (17) is fitted into the portion (16), and the O-ring (17) is connected to the inner transmission wheel (16) radially outside the key groove opening (14) of the end surface (13) of the inner transmission wheel (4). 4) Since it is sandwiched between the end face (13) and the collar (8), the outer portion in the radial direction from the key groove opening (14) having a small sealing area is strongly sealed with an O-ring (17). The engine oil in the transmission case (1) can hardly enter the gap between the rotary transmission shaft (2) and the collar (8), and oil leakage from the collar (8) can be prevented.

(請求項6に係る発明)
請求項6に係る発明は、請求項1から請求項3のいずれかに係る発明の効果に加え、次の効果を奏する。
《効果》 カラーからのオイル漏れを防止することができる。
図3(A)〜(C)に例示するように、回転伝動軸(2)のカラー嵌合部分(18)の外周面(18a)に周方向に沿うOリング嵌合溝(19)を設け、このOリング嵌合溝(19)にOリング(20)を嵌合させ、このOリング(20)をカラー(8)の内周面(8b)に圧接させたので、伝動ケース(1)内のエンジンオイルが回転伝動軸(2)とカラー(8)との隙間に進入しても、Oリング(20)で伝動ケース(1)の外側への流出を止めることができ、カラー(8)からのオイル漏れを防止することができる。
(Invention of Claim 6)
The invention according to claim 6 has the following effects in addition to the effects of the invention according to any one of claims 1 to 3.
<Effect> Oil leakage from the collar can be prevented.
As illustrated in FIGS. 3A to 3C, an O-ring fitting groove (19) is provided along the circumferential direction on the outer peripheral surface (18a) of the collar fitting portion (18) of the rotary transmission shaft (2). Since the O-ring (20) is fitted into the O-ring fitting groove (19), and the O-ring (20) is brought into pressure contact with the inner peripheral surface (8b) of the collar (8), the transmission case (1) Even if the engine oil enters the gap between the rotary transmission shaft (2) and the collar (8), the O-ring (20) can stop the outflow to the outside of the transmission case (1). ) Can be prevented from leaking oil.

(請求項7に係る発明)
請求項7に係る発明は、請求項1から請求項3のいずれかに係る発明の効果に加え、次の効果を奏する。
《効果》 カラーからのオイル漏れを防止することができる。
図4(A)〜(D)に例示するように、回転伝動軸(2)に内部伝動輪(4)をキー(10)とキー溝(11)で廻り止めし、外部伝動輪(7)と内部伝動輪(4)との間にカラー(8)を挟み付けるに当たり、内部伝動輪(4)の端面(13)に周方向に沿ってOリング嵌合溝(21)を設け、このOリング嵌合溝(21)にOリング(22)を嵌合させ、このOリング(22)を内部伝動輪(4)の端面(13)のキー溝開口(14)よりも径方向外側で内部伝動輪(4)とカラー(8)の端面(15)との間に挟み付けたので、封止面積が小さいキー溝開口(14)よりも径方向外側の部分をOリング(22)で強力に封止することができ、伝動ケース(1)内のエンジンオイルが回転伝動軸(2)とカラー(8)との隙間に進入しにくく、カラー(8)からのオイル漏れを防止することができる。
(Invention of Claim 7)
The invention according to claim 7 has the following effects in addition to the effects of the invention according to any one of claims 1 to 3.
<Effect> Oil leakage from the collar can be prevented.
As illustrated in FIGS. 4 (A) to 4 (D), the internal transmission wheel (4) is prevented from rotating around the rotary transmission shaft (2) by the key (10) and the key groove (11), and the external transmission wheel (7). When the collar (8) is sandwiched between the inner transmission wheel (4) and the end face (13) of the inner transmission wheel (4), an O-ring fitting groove (21) is provided along the circumferential direction. The O-ring (22) is fitted into the ring fitting groove (21), and this O-ring (22) is located radially outside the key groove opening (14) of the end face (13) of the internal transmission wheel (4). Since it is sandwiched between the transmission wheel (4) and the end face (15) of the collar (8), the O-ring (22) strongly strengthens the portion radially outside the key groove opening (14) with a small sealing area. The engine oil in the transmission case (1) is difficult to enter the gap between the rotary transmission shaft (2) and the collar (8), and oil leakage from the collar (8) can be prevented. it can.

(請求項8に係る発明)
請求項8に係る発明は、請求項1から請求項3のいずれかに係る発明の効果に加え、次の効果を奏する。
《効果》 カラーからのオイル漏れを防止することができる。
図5(A)〜(D)に例示するように、回転伝動軸(2)に内部伝動輪(4)をキー(10)とキー溝(11)で廻り止めし、外部伝動輪(7)と内部伝動輪(4)との間にカラー(8)を挟み付けるに当たり、カラー(8)の端面(15)に周方向に沿ってOリング嵌合溝(23)を設け、このOリング嵌合溝(23)にOリング(24)を嵌合させ、このOリング(24)を内部伝動輪(4)の端面(13)のキー溝開口(14)よりも径方向外側で内部伝動輪(4)の端面(13)とカラー(8)との間に挟み付けたので、封止面積が小さいキー溝開口(14)よりも径方向外側の部分をOリング(24)で強力に封止することができ、伝動ケース(1)内のエンジンオイルが回転伝動軸(2)とカラー(8)との隙間に進入しにくく、カラー(8)からのオイル漏れを防止することができる。
(Invention of Claim 8)
The invention according to claim 8 has the following effects in addition to the effects of the invention according to any one of claims 1 to 3.
<Effect> Oil leakage from the collar can be prevented.
As illustrated in FIGS. 5 (A) to (D), the internal transmission wheel (4) is prevented from rotating around the rotary transmission shaft (2) by the key (10) and the key groove (11), and the external transmission wheel (7). When the collar (8) is sandwiched between the inner transmission wheel (4) and the end face (15) of the collar (8), an O-ring fitting groove (23) is provided along the circumferential direction. An O-ring (24) is fitted into the mating groove (23), and the O-ring (24) is disposed radially outside the key groove opening (14) of the end surface (13) of the internal transmission wheel (4). Since it is sandwiched between the end face (13) of (4) and the collar (8), the O-ring (24) strongly seals the portion radially outside the key groove opening (14) having a small sealing area. The engine oil in the transmission case (1) can hardly enter the gap between the rotary transmission shaft (2) and the collar (8), and oil leakage from the collar (8) can be prevented.

(請求項9に係る発明)
請求項9に係る発明は、請求項1から請求項3のいずれかに係る発明の効果に加え、次の効果を奏する。
《効果》 カラーからのオイル漏れを防止することができる。
図6(A)〜(C)に例示するように、カラー(8)の内周面(8b)に周方向に沿うOリング嵌合溝(41)を設け、このOリング嵌合溝(41)にOリング(42)を嵌合させ、このOリング(42)を回転伝動軸(2)のカラー嵌合部分(18)の外周面(18a)に圧接させたので、伝動ケース(1)内のエンジンオイルが回転伝動軸(2)とカラー(8)との隙間に進入しても、Oリング(42)で伝動ケース(1)の外側への流出を止めることができ、カラー(8)からのオイル漏れを防止することができる。
(Invention according to claim 9)
The invention according to claim 9 has the following effects in addition to the effects of the invention according to any one of claims 1 to 3.
<Effect> Oil leakage from the collar can be prevented.
As illustrated in FIGS. 6A to 6C, an O-ring fitting groove (41) is provided on the inner peripheral surface (8b) of the collar (8) along the circumferential direction. ) Is fitted with the O-ring (42), and this O-ring (42) is brought into pressure contact with the outer peripheral surface (18a) of the collar fitting portion (18) of the rotary transmission shaft (2). Even if the engine oil enters the gap between the rotary transmission shaft (2) and the collar (8), the O-ring (42) can stop the outflow to the outside of the transmission case (1). ) Can be prevented from leaking oil.

本発明の第1実施形態に係るエンジンの伝動ケースの密封装置を説明する図で、図1(A)は縦断側面図、図1(B)は図1(A)のB矢視部分の拡大図、図1(C)は図1(A)のC矢視部分の拡大図、図1(D)は図1(A)のD−D線断面図、図1(E)は防塵カバーの後面図、図1(F)は図1(E)のF−F線断面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the sealing device of the transmission case of the engine which concerns on 1st Embodiment of this invention, FIG. 1 (A) is a vertical side view, FIG.1 (B) is an enlarged view of the B arrow part of FIG. Fig. 1 (C) is an enlarged view of the portion indicated by arrow C in Fig. 1 (A), Fig. 1 (D) is a sectional view taken along the line DD in Fig. 1 (A), and Fig. 1 (E) is a dustproof cover. FIG. 1F is a rear view, and is a cross-sectional view taken along line FF in FIG. 本発明の第2実施形態に係るエンジンの伝動ケースの密封装置を説明する図で、図2(A)は縦断側面図、図2(B)は図2(A)のB矢視部分の拡大図、図2(C)は図2(A)のC矢視部分の拡大図、図2(D)は図2(A)のD−D線断面図、図2(E)は防塵カバーの後面図、図2(F)は図2(E)のF−F線断面図である。It is a figure explaining the sealing device of the transmission case of the engine which concerns on 2nd Embodiment of this invention, FIG. 2 (A) is a vertical side view, FIG.2 (B) is an enlarged view of the B arrow part of FIG. 2 (A). Fig. 2 (C) is an enlarged view of the portion indicated by the arrow C in Fig. 2 (A), Fig. 2 (D) is a sectional view taken along the line DD in Fig. 2 (A), and Fig. 2 (E) is a dustproof cover. FIG. 2F is a rear view, and is a cross-sectional view taken along line FF in FIG. 本発明の第3実施形態に係るエンジンの伝動ケースの密封装置を説明する図で、図3(A)は縦断側面図、図3(B)は図3(A)のB矢視部分の拡大図、図3(C)は図3(A)のC矢視部分の拡大図、図3(D)は図3(A)のD−D線断面図、図3(E)は防塵カバーの後面図、図3(F)は図3(E)のF−F線断面図である。It is a figure explaining the sealing device of the transmission case of the engine which concerns on 3rd Embodiment of this invention, FIG. 3 (A) is a vertical side view, FIG.3 (B) is an enlarged view of the B arrow part of FIG. 3 (A). Fig. 3 (C) is an enlarged view of the portion indicated by the arrow C in Fig. 3 (A), Fig. 3 (D) is a sectional view taken along the line DD of Fig. 3 (A), and Fig. 3 (E) is a dustproof cover FIG. 3F is a rear view, and is a cross-sectional view taken along line FF in FIG. 本発明の第4実施形態に係るエンジンの伝動ケースの密封装置を説明する図で、図4(A)は縦断側面図、図4(B)は図4(A)のB矢視部分の拡大図、図4(C)は図4(A)のC矢視部分の拡大図、図4(D)は図4(A)のD−D線断面図、図4(E)は防塵カバーの後面図、図4(F)は図4(E)のF−F線断面図である。It is a figure explaining the sealing device of the transmission case of the engine which concerns on 4th Embodiment of this invention, FIG. 4 (A) is a vertical side view, FIG.4 (B) is an enlarged view of the B arrow part of FIG. 4 (A). FIG. 4 (C) is an enlarged view of the portion indicated by the arrow C in FIG. 4 (A), FIG. 4 (D) is a cross-sectional view along the line DD in FIG. 4 (A), and FIG. FIG. 4F is a rear view, and is a cross-sectional view taken along line FF in FIG. 本発明の第5実施形態に係るエンジンの伝動ケースの密封装置を説明する図で、図5(A)は縦断側面図、図5(B)は図5(A)のB矢視部分の拡大図、図5(C)は図5(A)のC矢視部分の拡大図、図5(D)は図5(A)のD−D線断面図、図5(E)は防塵カバーの後面図、図5(F)は図5(E)のF−F線断面図である。It is a figure explaining the sealing device of the transmission case of the engine which concerns on 5th Embodiment of this invention, FIG. 5 (A) is a vertical side view, FIG.5 (B) is an enlarged view of the B arrow part of FIG. 5 (A). FIG. 5 (C) is an enlarged view of the portion indicated by the arrow C in FIG. 5 (A), FIG. 5 (D) is a sectional view taken along the line DD in FIG. 5 (A), and FIG. FIG. 5F is a rear view, and is a cross-sectional view taken along line FF in FIG. 本発明の第6実施形態に係るエンジンの伝動ケースの密封装置を説明する図で、図6(A)は縦断側面図、図6(B)は図6(A)のB矢視部分の拡大図、図6(C)は図6(A)のC矢視部分の拡大図、図6(D)は図6(A)のD−D線断面図、図6(E)は防塵カバーの後面図、図6(F)は図6(E)のF−F線断面図である。It is a figure explaining the sealing device of the transmission case of the engine which concerns on 6th Embodiment of this invention, FIG. 6 (A) is a vertical side view, FIG.6 (B) is an enlarged view of the B arrow part of FIG. 6 (A). Fig. 6 (C) is an enlarged view of the portion indicated by the arrow C in Fig. 6 (A), Fig. 6 (D) is a sectional view taken along the line DD of Fig. 6 (A), and Fig. 6 (E) is a dustproof cover FIG. 6F is a rear view, and is a cross-sectional view taken along line FF in FIG.

図1〜図6は本発明の第1〜第6実施形態に係るエンジンの伝動ケースの密封装置を説明する図であり、この実施形態では、ディーゼルエンジンの調時伝動ギヤケースの密封装置について説明する。   FIGS. 1-6 is a figure explaining the sealing device of the transmission case of the engine which concerns on 1st-6th embodiment of this invention, and this embodiment demonstrates the sealing device of the timing transmission gear case of a diesel engine. .

図1に示す第1実施形態の構成は、次の通りである。
図1の(A)〜(C)に示すように、伝動ケース(1)内に回転伝動軸(2)を挿通し、伝動ケース(1)内で回転伝動軸(2)に内部伝動輪(4)を固定し、伝動ケース(1)のケース壁(3)に伝動軸挿通孔(5)をあけ、伝動軸挿通孔(5)を介して伝動ケース(1)外に回転伝動軸(2)に突出させ、伝動ケース(1)外で回転伝動軸(2)の突出部(6)に外部伝動輪(7)を嵌め、伝動軸挿通孔(5)内で回転伝動軸(2)にカラー(8)を嵌め、伝動軸挿通孔(5)内にオイルシール(9)を嵌め、オイルシール(9)をカラー(8)の外周面(8a)に接当させている。
カラー(8)の外周面(8a)に窒化処理層を形成している。このため、カラー(8)の耐摩耗性が優れ、エンジンの耐用年数を越える耐久性を得ることができ、カラー(8)の交換が不要になる。
窒化処理層の最表面に浸硫処理層を設けている。このため、カラー(8)の潤滑性が高い。
The configuration of the first embodiment shown in FIG. 1 is as follows.
As shown in FIGS. 1A to 1C, the rotary transmission shaft (2) is inserted into the transmission case (1), and the internal transmission wheel (2) is connected to the rotary transmission shaft (2) in the transmission case (1). 4) is fixed, a transmission shaft insertion hole (5) is made in the case wall (3) of the transmission case (1), and the rotational transmission shaft (2) is moved out of the transmission case (1) through the transmission shaft insertion hole (5). ), The outer transmission wheel (7) is fitted to the protrusion (6) of the rotary transmission shaft (2) outside the transmission case (1), and the rotary transmission shaft (2) is inserted into the transmission shaft insertion hole (5). The collar (8) is fitted, the oil seal (9) is fitted in the transmission shaft insertion hole (5), and the oil seal (9) is brought into contact with the outer peripheral surface (8a) of the collar (8).
A nitriding layer is formed on the outer peripheral surface (8a) of the collar (8). For this reason, the wear resistance of the collar (8) is excellent, the durability exceeding the service life of the engine can be obtained, and the replacement of the collar (8) becomes unnecessary.
A sulfuration treatment layer is provided on the outermost surface of the nitridation treatment layer. For this reason, the lubricity of the collar (8) is high.

伝動ケース(1)は調時伝動ギヤケース(33)で、調時伝動ギヤケース(33)内には調時伝動ギヤトレインが収容されている。
回転伝動軸(2)はクランク軸(34)である。
内部伝動輪(4)はクランクギヤ(35)であり、調時伝動ギヤトレインの構成要素の1つである。
外部伝動輪(7)はプーリ(36)であり、伝動ベルトを介してエンジン冷却ファンや冷却水ポンプに動力を伝達する。プーリ(36)はキー(37)とキー溝(38)で回転伝動軸(2)に廻り止めされている。
回転伝動軸(2)の受座(39)に内部伝動輪(4)の後側の端面を接当させ、内部伝動輪(4)の前側にカラー(8)を配置し、カラー(8)の前側に外部伝動輪(7)を配置し、外部伝動輪(7)を回転伝動軸(2)に取り付けた締結具(40)の締結力で後向きに圧をかけ、回転伝動軸(2)の受座(39)と外部伝動輪(7)との間に、カラー(8)や内部伝動輪(4)等を挟み付けている。締結具(40)は締結ナットである。
The transmission case (1) is a timing transmission gear case (33), and a timing transmission gear train is accommodated in the timing transmission gear case (33).
The rotation transmission shaft (2) is a crankshaft (34).
The internal transmission wheel (4) is a crank gear (35), which is one of the components of the timing transmission gear train.
The external transmission wheel (7) is a pulley (36), and transmits power to the engine cooling fan and the cooling water pump via the transmission belt. The pulley (36) is secured to the rotation transmission shaft (2) by a key (37) and a key groove (38).
The rear end face of the internal transmission wheel (4) is brought into contact with the seat (39) of the rotary transmission shaft (2), and the collar (8) is arranged on the front side of the internal transmission wheel (4). The external transmission wheel (7) is arranged on the front side of the rotary transmission shaft, and the external transmission wheel (7) is pressured backward by the fastening force of the fastener (40) attached to the rotational transmission shaft (2), so that the rotational transmission shaft (2) A collar (8), an internal transmission wheel (4) and the like are sandwiched between the seat (39) and the external transmission wheel (7). The fastener (40) is a fastening nut.

カラー(8)は円筒形鋼材で構成されている。
窒化処理層は、円筒形鋼材の外周面に形成されるとともに、内周面にも形成されている。
円筒形鋼材の表面に窒化処理層を形成するには、次のようにする。
アルミニウム、クロム、モリブデン等の窒化物形成元素を含む円筒形鋼材を、アンモニアまたは窒素を含んだ雰囲気中に暴露し、オーステナイト化温度以下の温度域で過熱することにより、円筒形鋼材の表面近傍(1mm以下)に窒素を浸透させて硬化させる。カラー(8)の表面硬度は、ビッカース硬さで900HV以上である。
浸硫処理層は、ガス浸硫窒化等により、窒化化合物層の上に形成される数ミクロンの硫化物層である。
The collar (8) is made of a cylindrical steel material.
The nitriding layer is formed on the outer peripheral surface of the cylindrical steel material and also on the inner peripheral surface.
In order to form a nitriding layer on the surface of a cylindrical steel material, the following is performed.
By exposing a cylindrical steel containing nitride-forming elements such as aluminum, chromium and molybdenum to an atmosphere containing ammonia or nitrogen and heating it in the temperature range below the austenitizing temperature, the surface of the cylindrical steel is near ( 1 mm or less) is infiltrated with nitrogen and cured. The surface hardness of the color (8) is 900 HV or more in terms of Vickers hardness.
The sulfuration treatment layer is a sulfide layer of several microns formed on the nitride compound layer by gas oxynitridation or the like.

図1(A)(B)に示すように、回転伝動軸(2)の軸長方向を前後方向として、カラー(8)を前後対称形状としている。すなわち、端部の面取りやアール等によるカラー(8)の形状が前後対称になるようにしている。このため、回転伝動軸(2)にカラー(8)を両端部のどちらから嵌め込んでも、カラー(8)の組み間違いが起こらず、これに起因するカラー(8)からのオイル漏れを防止することができる。また、カラー(8)の嵌め込み作業が簡単になる。   As shown in FIGS. 1 (A) and 1 (B), the axial length direction of the rotational transmission shaft (2) is the front-rear direction, and the collar (8) is a front-rear symmetrical shape. That is, the shape of the collar (8) due to the chamfering of the end portion or the radius is made symmetrical in the front-rear direction. For this reason, even if the collar (8) is fitted to the rotary transmission shaft (2) from either end, the collar (8) is not assembled incorrectly, and oil leakage from the collar (8) due to this is prevented. be able to. Moreover, the work of fitting the collar (8) is simplified.

図1(A)〜(D)に示すように、回転伝動軸(2)に内部伝動輪(4)をキー(10)とキー溝(11)で廻り止めし、外部伝動輪(7)と内部伝動輪(4)との間にカラー(8)を挟み付けるに当たり、次のようにしている。
カラー(8)と内部伝動輪(4)との間にガスケット(12)を挟み、このガスケット(12)を内部伝動輪(4)の端面(13)のキー溝開口(14)よりも径方向外側で内部伝動輪(4)の端面(13)とカラー(8)の端面(15)との間に挟み付けている。
このため、封止面積が小さいキー溝開口(14)よりも径方向外側の部分をガスケット(12)で強力に封止することができ、伝動ケース(1)内のエンジンオイルが回転伝動軸(2)とカラー(8)との隙間に進入しにくく、カラー(8)からのオイル漏れを防止することができる。
As shown in FIGS. 1 (A) to 1 (D), the internal transmission wheel (4) is prevented from rotating around the rotary transmission shaft (2) by the key (10) and the key groove (11), and the external transmission wheel (7) The collar (8) is sandwiched between the internal transmission wheel (4) and the following is performed.
A gasket (12) is sandwiched between the collar (8) and the internal transmission wheel (4), and this gasket (12) is positioned in a radial direction from the key groove opening (14) of the end surface (13) of the internal transmission wheel (4). The outer side is sandwiched between the end face (13) of the internal transmission wheel (4) and the end face (15) of the collar (8).
For this reason, the portion radially outside the key groove opening (14) having a small sealing area can be strongly sealed by the gasket (12), and the engine oil in the transmission case (1) is rotated by the rotation transmission shaft ( It is difficult to enter the gap between 2) and the collar (8), and oil leakage from the collar (8) can be prevented.

図1(A)(B)に示すように、回転伝動軸(2)の軸長方向を前後方向、回転伝動軸(2)の突出方向を前として、外部伝動輪(7)とカラー(8)との間に環状の防塵カバー(25)を挟み付け、この防塵カバー(25)でオイルシール(9)をその前側から覆っている。
このため、伝動ケース(1)外の塵埃がオイルシール(9)に接近しにくく、塵埃の噛み込みによるオイルシール(9)の磨耗を抑制することができる。
As shown in FIGS. 1 (A) and 1 (B), with the axial direction of the rotary transmission shaft (2) in the front-rear direction and the protruding direction of the rotary transmission shaft (2) as the front, the external transmission wheel (7) and the collar (8 An annular dust cover (25) is sandwiched between the oil seal (9) and the oil seal (9) from the front side.
For this reason, it is difficult for dust outside the transmission case (1) to approach the oil seal (9), and wear of the oil seal (9) due to the biting of dust can be suppressed.

図1(B)に示すように、伝動ケース(1)のケース壁(3)から前側に伝動軸挿通孔(5)のボス(26)を突出させ、このボス(26)の内周にオイルシール(9)を嵌め、防塵カバー(25)の外周縁部(27)をボス(26)の外周面(28)に沿って後向きに導出している。
このため、伝動ケース(1)外の塵埃が防塵カバー(25)とボス(26)の間に進入しにくく、塵埃によるオイルシール(9)の磨耗を抑制することができる。
As shown in FIG. 1 (B), the boss (26) of the transmission shaft insertion hole (5) protrudes from the case wall (3) of the transmission case (1) to the front side, and oil is formed on the inner periphery of the boss (26) The seal (9) is fitted and the outer peripheral edge (27) of the dust cover (25) is led out rearward along the outer peripheral surface (28) of the boss (26).
For this reason, it is difficult for dust outside the transmission case (1) to enter between the dust cover (25) and the boss (26), and wear of the oil seal (9) due to dust can be suppressed.

図1(B)(E)(F)に示すように、防塵カバー(25)の後面(29)に突部(30)を設け、防塵カバー(25)の回転により、オイルシール(9)の前方で突部(30)による風が起こるようにしている。突部(30)に代えて、防塵カバー(25)の後面(29)に凹部を設け、防塵カバー(25)の回転により、オイルシール(9)の前方で凹部による風が起こるようにしてもよい。
このため、風によってオイルシール(9)への塵埃の進入が妨げられ、塵埃の噛み込みによるオイルシール(9)の磨耗を抑制することができる。
また、風によるオイルシール(9)付近の空気の流動でオイルシール(9)が冷却される効果もある。
突部(30)は防塵カバー(25)の径方向に伸びる突条である。凹部も防塵カバー(25)の径方向に伸びる凹条として形成する。
As shown in FIGS. 1 (B), (E), and (F), a protrusion (30) is provided on the rear surface (29) of the dustproof cover (25), and the oil seal (9) is rotated by rotating the dustproof cover (25). The wind by the protrusion (30) occurs in the front. Instead of the protrusion (30), a recess is provided on the rear surface (29) of the dust cover (25), and rotation of the dust cover (25) may cause wind by the recess in front of the oil seal (9). Good.
For this reason, entry of dust into the oil seal (9) is hindered by the wind, and wear of the oil seal (9) due to the biting of dust can be suppressed.
In addition, there is an effect that the oil seal (9) is cooled by the flow of air near the oil seal (9) by wind.
The protrusion (30) is a protrusion extending in the radial direction of the dust cover (25). The concave portion is also formed as a concave strip extending in the radial direction of the dust cover (25).

図2に示す第2実施形態は、第1実施形態のガスケット(12)に代えて、Oリング(17)を用いており、次の点が第1実施形態と異なる。
図2(A)〜(D)に例示するように、回転伝動軸(2)に内部伝動輪(4)をキー(10)とキー溝(11)で廻り止めし、外部伝動輪(7)と内部伝動輪(4)との間にカラー(8)を挟み付けるに当たり、カラー(8)の端面(15)の外周に沿ってOリング嵌合部(16)を設け、このOリング嵌合部(16)にOリング(17)を嵌合させ、このOリング(17)を内部伝動輪(4)の端面(13)のキー溝開口(14)よりも径方向外側で内部伝動輪(4)の端面(13)とカラー(8)との間に挟み付けている。
The second embodiment shown in FIG. 2 uses an O-ring (17) instead of the gasket (12) of the first embodiment, and differs from the first embodiment in the following points.
As illustrated in FIGS. 2 (A) to 2 (D), the internal transmission wheel (4) is prevented from rotating around the rotary transmission shaft (2) by the key (10) and the key groove (11), and the external transmission wheel (7). When the collar (8) is sandwiched between the inner transmission wheel (4) and the inner transmission wheel (4), an O-ring fitting portion (16) is provided along the outer periphery of the end face (15) of the collar (8). An O-ring (17) is fitted into the portion (16), and the O-ring (17) is connected to the inner transmission wheel (16) radially outside the key groove opening (14) of the end surface (13) of the inner transmission wheel (4). 4) between the end face (13) and the collar (8).

このため、封止面積が小さいキー溝開口(14)よりも径方向外側の部分をOリング(17)で強力に封止することができ、伝動ケース(1)内のエンジンオイルが回転伝動軸(2)とカラー(8)との隙間に進入しにくく、カラー(8)からのオイル漏れを防止することができる。
他の構成や機能は第1実施形態と同じであり、図2中、第1実施形態と同一の要素には図1と同一の符号を付しておく。
For this reason, it is possible to strongly seal the outer portion in the radial direction with respect to the key groove opening (14) having a small sealing area with the O-ring (17), and the engine oil in the transmission case (1) is rotated by the rotation transmission shaft. It is difficult to enter the gap between (2) and the collar (8), and oil leakage from the collar (8) can be prevented.
Other configurations and functions are the same as those of the first embodiment. In FIG. 2, the same elements as those of the first embodiment are denoted by the same reference numerals as those of FIG.

図3に示す第3実施形態は、第1実施形態のガスケット(12)に代えて、Oリング(20)を用いており、次の点が第1実施形態と異なる。
図3(A)〜(C)に示すように、回転伝動軸(2)のカラー嵌合部分(18)の外周面(18a)に周方向に沿うOリング嵌合溝(19)を設け、このOリング嵌合溝(19)にOリング(20)を嵌合させ、このOリング(20)をカラー(8)の内周面(8b)に圧接させている。
The third embodiment shown in FIG. 3 uses an O-ring (20) instead of the gasket (12) of the first embodiment, and differs from the first embodiment in the following points.
As shown in FIGS. 3A to 3C, an O-ring fitting groove (19) is provided along the circumferential direction on the outer peripheral surface (18a) of the collar fitting portion (18) of the rotary transmission shaft (2). An O-ring (20) is fitted into the O-ring fitting groove (19), and the O-ring (20) is pressed against the inner peripheral surface (8b) of the collar (8).

このため、伝動ケース(1)内のエンジンオイルが回転伝動軸(2)とカラー(8)との隙間に進入しても、Oリング(20)で伝動ケース(1)の外側への流出を止めることができ、カラー(8)からのオイル漏れを防止することができる。
他の構成や機能は第1実施形態と同じであり、図3中、第1実施形態と同一の要素には図1と同一の符号を付しておく。
For this reason, even if the engine oil in the transmission case (1) enters the gap between the rotary transmission shaft (2) and the collar (8), the O-ring (20) flows out of the transmission case (1). It can be stopped and oil leakage from the collar (8) can be prevented.
Other configurations and functions are the same as those of the first embodiment. In FIG. 3, the same elements as those of the first embodiment are denoted by the same reference numerals as those of FIG.

図4に示す第4実施形態は、第1実施形態のガスケット(12)に代えて、Oリング(22)を用いており、次の点が第1実施形態と異なる。
図4(A)〜(D)に示すように、回転伝動軸(2)に内部伝動輪(4)をキー(10)とキー溝(11)で廻り止めし、外部伝動輪(7)と内部伝動輪(4)との間にカラー(8)を挟み付けるに当たり、カラー(8)の端面(15)の外周に沿ってOリング嵌合溝(21)を設け、このOリング嵌合溝(21)にOリング(22)を嵌合させ、このOリング(22)を内部伝動輪(4)の端面(13)のキー溝開口(14)よりも径方向外側で内部伝動輪(4)とカラー(8)の端面(15)との間に挟み付けている。
The fourth embodiment shown in FIG. 4 uses an O-ring (22) instead of the gasket (12) of the first embodiment, and differs from the first embodiment in the following points.
As shown in FIGS. 4 (A) to (D), the internal transmission wheel (4) is prevented from rotating around the rotary transmission shaft (2) by the key (10) and the key groove (11), and the external transmission wheel (7) When the collar (8) is sandwiched between the inner transmission wheel (4), an O-ring fitting groove (21) is provided along the outer periphery of the end face (15) of the collar (8). An O-ring (22) is fitted to (21), and this O-ring (22) is connected to the inner transmission wheel (4) radially outward from the keyway opening (14) of the end face (13) of the inner transmission wheel (4). ) And the end face (15) of the collar (8).

このため、封止面積が小さいキー溝開口(14)よりも径方向外側の部分をOリング(22)で強力に封止することができ、伝動ケース(1)内のエンジンオイルが回転伝動軸(2)とカラー(8)との隙間に進入しにくく、カラー(8)からのオイル漏れを防止することができる。
他の構成や機能は第1実施形態と同じであり、図4中、第1実施形態と同一の要素には図1と同一の符号を付しておく。
For this reason, it is possible to strongly seal the outer portion in the radial direction with respect to the key groove opening (14) having a small sealing area by the O-ring (22), and the engine oil in the transmission case (1) is rotated by the rotation transmission shaft. It is difficult to enter the gap between (2) and the collar (8), and oil leakage from the collar (8) can be prevented.
Other configurations and functions are the same as those of the first embodiment. In FIG. 4, the same elements as those of the first embodiment are denoted by the same reference numerals as those of FIG.

図5に示す第5実施形態は、第1実施形態のガスケット(12)に代えて、Oリング(24)を用いており、次の点が第1実施形態と異なる。
図5(A)〜(D)に示すように、回転伝動軸(2)に内部伝動輪(4)をキー(10)とキー溝(11)で廻り止めし、外部伝動輪(7)と内部伝動輪(4)との間にカラー(8)を挟み付けるに当たり、カラー(8)の端面(15)に周方向に沿ってOリング嵌合溝(23)を設け、このOリング嵌合溝(23)にOリング(24)を嵌合させ、このOリング(24)を内部伝動輪(4)の端面(13)のキー溝開口(14)よりも径方向外側で内部伝動輪(4)の端面(13)とカラー(8)との間に挟み付けている。
The fifth embodiment shown in FIG. 5 uses an O-ring (24) instead of the gasket (12) of the first embodiment, and differs from the first embodiment in the following points.
As shown in FIGS. 5 (A) to 5 (D), the internal transmission wheel (4) is prevented from rotating around the rotary transmission shaft (2) by the key (10) and the key groove (11), and the external transmission wheel (7) When the collar (8) is sandwiched between the inner transmission wheel (4) and the end face (15) of the collar (8), an O-ring fitting groove (23) is provided along the circumferential direction. An O-ring (24) is fitted into the groove (23), and the O-ring (24) is disposed radially outside the key groove opening (14) of the end surface (13) of the internal transmission wheel (4) ( 4) between the end face (13) and the collar (8).

このため、封止面積が小さいキー溝開口(14)よりも径方向外側の部分をOリング(24)で封止することができ、伝動ケース(1)内のエンジンオイルが回転伝動軸(2)とカラー(8)との隙間に進入しにくく、カラー(8)からのオイル漏れを防止することができる。
他の構成や機能は第1実施形態と同じであり、図5中、第1実施形態と同一の要素には図1と同一の符号を付しておく。
For this reason, a portion radially outside the key groove opening (14) having a small sealing area can be sealed by the O-ring (24), and the engine oil in the transmission case (1) is transferred to the rotary transmission shaft (2 ) And the collar (8) are difficult to enter, and oil leakage from the collar (8) can be prevented.
Other configurations and functions are the same as those in the first embodiment. In FIG. 5, the same elements as those in the first embodiment are denoted by the same reference numerals as those in FIG.

図6に示す第6実施形態は、第1実施形態のガスケット(12)に代えて、Oリング(42)を用いており、次の点が第1実施形態と異なる。
図6(A)〜(C)に示すように、カラー(8)の内周面(8b)に周方向に沿うOリング嵌合溝(41)を設け、このOリング嵌合溝(41)にOリング(42)を嵌合させ、このOリング(42)を回転伝動軸(2)のカラー嵌合部分(18)の外周面(18a)に圧接させている。
The sixth embodiment shown in FIG. 6 uses an O-ring (42) instead of the gasket (12) of the first embodiment, and differs from the first embodiment in the following points.
As shown in FIGS. 6A to 6C, an O-ring fitting groove (41) is provided on the inner peripheral surface (8b) of the collar (8) along the circumferential direction, and this O-ring fitting groove (41). The O-ring (42) is fitted to the outer peripheral surface (18a) of the collar fitting portion (18) of the rotary transmission shaft (2).

このため、伝動ケース(1)内のエンジンオイルが回転伝動軸(2)とカラー(8)との隙間に進入しても、Oリング(42)で伝動ケース(1)の外側への流出を止めることができ、カラー(8)からのオイル漏れを防止することができる。
他の構成や機能は第1実施形態と同じであり、図6中、第1実施形態と同一の要素には図1と同一の符号を付しておく。
For this reason, even if the engine oil in the transmission case (1) enters the gap between the rotary transmission shaft (2) and the collar (8), the O-ring (42) flows out of the transmission case (1). It can be stopped and oil leakage from the collar (8) can be prevented.
Other configurations and functions are the same as those of the first embodiment. In FIG. 6, the same elements as those of the first embodiment are denoted by the same reference numerals as those of FIG.

(1) 伝動ケース
(2) 回転伝動軸
(3) ケース壁
(4) 内部伝動輪
(5) 伝動軸挿通孔
(6) 突出部
(7) 外部伝動輪
(8) カラー
(8a) 外周面
(8b) 内周面
(9) オイルシール
(10) キー
(11) キー溝
(12) ガスケット
(13) 内部伝動輪の端面
(14) キー溝開口
(15) カラーの端面
(16) Oリング嵌合部
(17) Oリング
(18) 回転伝動軸のカラー嵌合部分
(18a) 外周面
(19) Oリング嵌合溝
(20) Oリング
(21) Oリング嵌合溝
(22) Oリング
(23) Oリング嵌合溝
(24) Oリング
(41) Oリング嵌合溝
(42) Oリング
(1) Transmission case
(2) Rotating transmission shaft
(3) Case wall
(4) Internal transmission wheel
(5) Transmission shaft insertion hole
(6) Protruding part
(7) External transmission wheel
(8) Color
(8a) Outer surface
(8b) Inner peripheral surface
(9) Oil seal
(10) key
(11) Keyway
(12) Gasket
(13) End face of internal transmission wheel
(14) Keyway opening
(15) Color end face
(16) O-ring fitting part
(17) O-ring
(18) Collar fitting part of rotation transmission shaft
(18a) Outer surface
(19) O-ring fitting groove
(20) O-ring
(21) O-ring fitting groove
(22) O-ring
(23) O-ring fitting groove
(24) O-ring
(41) O-ring fitting groove
(42) O-ring

Claims (9)

伝動ケース(1)内に回転伝動軸(2)を挿通し、伝動ケース(1)内で回転伝動軸(2)の外周に内部伝動輪(4)を嵌め、伝動ケース(1)のケース壁(3)に伝動軸挿通孔(5)をあけ、伝動軸挿通孔(5)を介して伝動ケース(1)外に回転伝動軸(2)に突出させ、伝動ケース(1)外で回転伝動軸(2)の突出部(6)の外周に外部伝動輪(7)を嵌め、伝動軸挿通孔(5)内で回転伝動軸(2)の外周にカラー(8)を嵌め、伝動軸挿通孔(5)の内周にオイルシール(9)を嵌め、オイルシール(9)をカラー(8)の外周面(8a)に接当させた、エンジンの伝動ケースの密封装置において、
カラー(8)の外周面(8a)に窒化処理層を形成した、ことを特徴とするエンジンの伝動ケースの密封装置。
Insert the rotation transmission shaft (2) into the transmission case (1), fit the inner transmission wheel (4) to the outer periphery of the rotation transmission shaft (2) in the transmission case (1), and the case wall of the transmission case (1). The transmission shaft insertion hole (5) is opened in (3), and the transmission shaft (2) is projected outside the transmission case (1) through the transmission shaft insertion hole (5), and the rotation transmission is performed outside the transmission case (1). The outer transmission wheel (7) is fitted on the outer periphery of the projection (6) of the shaft (2), the collar (8) is fitted on the outer periphery of the rotary transmission shaft (2) in the transmission shaft insertion hole (5), and the transmission shaft is inserted. In the sealing device for the transmission case of the engine, the oil seal (9) is fitted on the inner periphery of the hole (5), and the oil seal (9) is brought into contact with the outer peripheral surface (8a) of the collar (8).
A sealing device for an engine transmission case, wherein a nitrided layer is formed on the outer peripheral surface (8a) of the collar (8).
請求項1に記載したエンジンの伝動ケースの密封装置において、
窒化処理層の最表面に浸硫処理層を設けた、ことを特徴とするエンジンの伝動ケースの密封装置。
The sealing device for the transmission case of the engine according to claim 1,
A sealing device for a transmission case of an engine, wherein a sulfuration treatment layer is provided on the outermost surface of the nitridation treatment layer.
請求項1または請求項2に記載したエンジンの伝動ケースの密封装置において、
回転伝動軸(2)の軸長方向を前後方向として、カラー(8)を前後対称形状とした、ことを特徴とするエンジンの伝動ケースの密封装置。
In the sealing device for the transmission case of the engine according to claim 1 or 2,
A sealing device for an engine transmission case, characterized in that the axial direction of the rotary transmission shaft (2) is the longitudinal direction and the collar (8) is a longitudinally symmetrical shape.
請求項1から請求項3のいずれかに記載したエンジンの伝動ケースの密封装置において、
回転伝動軸(2)に内部伝動輪(4)をキー(10)とキー溝(11)で廻り止めし、外部伝動輪(7)と内部伝動輪(4)との間にカラー(8)を挟み付けるに当たり、
カラー(8)と内部伝動輪(4)との間にガスケット(12)を挟み、このガスケット(12)を内部伝動輪(4)の端面(13)のキー溝開口(14)よりも径方向外側で内部伝動輪(4)の端面(13)とカラー(8)の端面(15)との間に挟み付けた、ことを特徴とするエンジンの伝動ケースの密封装置。
The engine transmission case sealing device according to any one of claims 1 to 3,
The internal transmission wheel (4) is locked to the rotary transmission shaft (2) with the key (10) and key groove (11), and the collar (8) is provided between the external transmission wheel (7) and the internal transmission wheel (4). When sandwiching
A gasket (12) is sandwiched between the collar (8) and the internal transmission wheel (4), and this gasket (12) is positioned in a radial direction from the key groove opening (14) of the end surface (13) of the internal transmission wheel (4). An engine transmission case sealing device characterized in that it is sandwiched between an end surface (13) of an internal transmission wheel (4) and an end surface (15) of a collar (8) on the outside.
請求項1から請求項3のいずれかに記載したエンジンの伝動ケースの密封装置において、
回転伝動軸(2)に内部伝動輪(4)をキー(10)とキー溝(11)で廻り止めし、外部伝動輪(7)と内部伝動輪(4)との間にカラー(8)を挟み付けるに当たり、
カラー(8)の端面(15)の外周に沿ってOリング嵌合部(16)を設け、このOリング嵌合部(16)にOリング(17)を嵌合させ、このOリング(17)を内部伝動輪(4)の端面(13)のキー溝開口(14)よりも径方向外側で内部伝動輪(4)の端面(13)とカラー(8)との間に挟み付けた、ことを特徴とするエンジンの伝動ケースの密封装置。
The engine transmission case sealing device according to any one of claims 1 to 3,
The internal transmission wheel (4) is locked to the rotary transmission shaft (2) with the key (10) and key groove (11), and the collar (8) is provided between the external transmission wheel (7) and the internal transmission wheel (4). When sandwiching
An O-ring fitting part (16) is provided along the outer periphery of the end face (15) of the collar (8), and an O-ring (17) is fitted into the O-ring fitting part (16). ) Between the end face (13) of the internal transmission wheel (4) and the collar (8) on the radially outer side than the keyway opening (14) of the end face (13) of the internal transmission wheel (4). A sealing device for an engine transmission case.
請求項1から請求項3のいずれかに記載したエンジンの伝動ケースの密封装置において、
回転伝動軸(2)のカラー嵌合部分(18)の外周面(18a)に周方向に沿うOリング嵌合溝(19)を設け、このOリング嵌合溝(19)にOリング(20)を嵌合させ、このOリング(20)をカラー(8)の内周面(8b)に圧接させた、ことを特徴とするエンジンの伝動ケースの密封装置。
The engine transmission case sealing device according to any one of claims 1 to 3,
An O-ring fitting groove (19) along the circumferential direction is provided on the outer peripheral surface (18a) of the collar fitting portion (18) of the rotary transmission shaft (2), and an O-ring (20 ) And the O-ring (20) is brought into pressure contact with the inner peripheral surface (8b) of the collar (8).
請求項1から請求項3のいずれかに記載したエンジンの伝動ケースの密封装置において、
回転伝動軸(2)に内部伝動輪(4)をキー(10)とキー溝(11)で廻り止めし、外部伝動輪(7)と内部伝動輪(4)との間にカラー(8)を挟み付けるに当たり、
内部伝動輪(4)の端面(13)に周方向に沿ってOリング嵌合溝(21)を設け、このOリング嵌合溝(21)にOリング(22)を嵌合させ、このOリング(22)を内部伝動輪(4)の端面(13)のキー溝開口(14)よりも径方向外側で内部伝動輪(4)とカラー(8)の端面(15)との間に挟み付けた、ことを特徴とするエンジンの伝動ケースの密封装置。
The engine transmission case sealing device according to any one of claims 1 to 3,
The internal transmission wheel (4) is locked to the rotary transmission shaft (2) with the key (10) and key groove (11), and the collar (8) is provided between the external transmission wheel (7) and the internal transmission wheel (4). When sandwiching
An O-ring fitting groove (21) is provided in the end surface (13) of the internal transmission wheel (4) along the circumferential direction, and the O-ring (22) is fitted into the O-ring fitting groove (21). The ring (22) is sandwiched between the internal transmission wheel (4) and the end surface (15) of the collar (8) outside the keyway opening (14) of the end surface (13) of the internal transmission wheel (4) in the radial direction. A sealing device for an engine transmission case.
請求項1から請求項3のいずれかに記載したエンジンの伝動ケースの密封装置において、
回転伝動軸(2)に内部伝動輪(4)をキー(10)とキー溝(11)で廻り止めし、外部伝動輪(7)と内部伝動輪(4)との間にカラー(8)を挟み付けるに当たり、
カラー(8)の端面(15)に周方向に沿ってOリング嵌合溝(23)を設け、このOリング嵌合溝(23)にOリング(24)を嵌合させ、このOリング(24)を内部伝動輪(4)の端面(13)のキー溝開口(14)よりも径方向外側で内部伝動輪(4)の端面(13)とカラー(8)との間に挟み付けた、ことを特徴とするエンジンの伝動ケースの密封装置。
The engine transmission case sealing device according to any one of claims 1 to 3,
The internal transmission wheel (4) is locked to the rotary transmission shaft (2) with the key (10) and key groove (11), and the collar (8) is provided between the external transmission wheel (7) and the internal transmission wheel (4). When sandwiching
An O-ring fitting groove (23) is provided on the end face (15) of the collar (8) along the circumferential direction, and the O-ring (24) is fitted into the O-ring fitting groove (23). 24) is sandwiched between the end face (13) of the internal transmission wheel (4) and the collar (8) outside the keyway opening (14) of the end face (13) of the internal transmission wheel (4). An engine transmission case sealing device characterized by that.
請求項1から請求項3のいずれかに記載したエンジンの伝動ケースの密封装置において、
カラー(8)の内周面(8b)に周方向に沿うOリング嵌合溝(41)を設け、このOリング嵌合溝(41)にOリング(42)を嵌合させ、このOリング(42)を回転伝動軸(2)のカラー嵌合部分(18)の外周面(18a)に圧接させた、ことを特徴とするエンジンの伝動ケースの密封装置。
The engine transmission case sealing device according to any one of claims 1 to 3,
An O-ring fitting groove (41) along the circumferential direction is provided on the inner peripheral surface (8b) of the collar (8), and the O-ring (42) is fitted into the O-ring fitting groove (41). An engine transmission case sealing device characterized in that (42) is brought into pressure contact with the outer peripheral surface (18a) of the collar fitting portion (18) of the rotary transmission shaft (2).
JP2010214815A 2010-09-27 2010-09-27 Engine transmission case sealing device Expired - Fee Related JP5496039B2 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01158212A (en) * 1987-12-16 1989-06-21 Toyota Motor Corp Shaft subjected to oil leak preventing measure
JPH0622552U (en) * 1992-08-28 1994-03-25 株式会社クボタ Rotating shaft oil seal device for engine power transmission mechanism
JP2008202479A (en) * 2007-02-19 2008-09-04 Yamaha Motor Co Ltd Saddle ride type vehicle
JP2009257340A (en) * 2009-08-06 2009-11-05 Hitachi Ltd Scroll compressor
JP2009273573A (en) * 2008-05-13 2009-11-26 Pegasus Sewing Mach Mfg Co Ltd Oil feeder for sewing machine
JP2010121671A (en) * 2008-11-18 2010-06-03 Riken Corp Method of manufacturing steel 2-piece combined oil ring body and steel 2-piece combined oil ring using the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01158212A (en) * 1987-12-16 1989-06-21 Toyota Motor Corp Shaft subjected to oil leak preventing measure
JPH0622552U (en) * 1992-08-28 1994-03-25 株式会社クボタ Rotating shaft oil seal device for engine power transmission mechanism
JP2008202479A (en) * 2007-02-19 2008-09-04 Yamaha Motor Co Ltd Saddle ride type vehicle
JP2009273573A (en) * 2008-05-13 2009-11-26 Pegasus Sewing Mach Mfg Co Ltd Oil feeder for sewing machine
JP2010121671A (en) * 2008-11-18 2010-06-03 Riken Corp Method of manufacturing steel 2-piece combined oil ring body and steel 2-piece combined oil ring using the same
JP2009257340A (en) * 2009-08-06 2009-11-05 Hitachi Ltd Scroll compressor

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