JP2011179540A - Air breather of reduction gear - Google Patents

Air breather of reduction gear Download PDF

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JP2011179540A
JP2011179540A JP2010042216A JP2010042216A JP2011179540A JP 2011179540 A JP2011179540 A JP 2011179540A JP 2010042216 A JP2010042216 A JP 2010042216A JP 2010042216 A JP2010042216 A JP 2010042216A JP 2011179540 A JP2011179540 A JP 2011179540A
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breather
air breather
screw
air
housing
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Junichi Tsubota
潤一 坪田
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Tsubaki Emerson Co
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Tsubaki Emerson Co
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    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/027—Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers

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  • General Details Of Gearings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air breather of a reduction gear, which eliminates disassembling, machining and re-assembling of a peripheral member even if there occurs leakage of liquid from the air breather in the reduction gear in operation. <P>SOLUTION: The air breather 1 is constituted of a breather cap 12 and a breather tube 14, and the breather tube 14 is formed with a tapered screw 14a to be screwed to a screw hole 62 and an opening 14b. Since the opening 14b is formed at a side face of the tip of the breather tube 14, the liquid in a housing 60 is not splashed to the opening 14b even if the liquid is scattered in the direction of the air breather 1, and thus the leakage of the liquid from the air breather 1 can be prevented. Furthermore, since an outer diameter of an entire lower part 14c of the screw is made smaller than a valley diameter of the smallest portion of the screw 14a, the air breather 1 can be attached from outside the housing 60. Then, even if the liquid in the reduction gear leaked in operation, the machining of the housing 60 or the like is eliminated, while replacing the air breather 1. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、減速機の内部の圧力が運転中に高くなるのを防止する、減速機のエアブリーザに関する。   The present invention relates to an air breather for a speed reducer that prevents the internal pressure of the speed reducer from increasing during operation.

ハウジング内に所定量の潤滑油等の液体が封入される減速機には、通常、エアブリーザが取付けられている。エアブリーザは、ハウジングの内部と外気を連通させて、その内部の圧力が運転中に高くなるのを防止することによって、オイルシールの早期劣化や損傷、液体漏れが生じないようにするためのものである。   An air breather is usually attached to a speed reducer in which a predetermined amount of liquid such as lubricating oil is sealed in a housing. The air breather communicates the inside of the housing with the outside air and prevents the internal pressure from becoming high during operation to prevent premature deterioration, damage, or liquid leakage of the oil seal. is there.

しかし、図６（ａ）及び（ｂ）に示すように、従来はエアブリーザのブリーザ管先端部５０の底面に孔５２が設けられていたため、減速機内部のギア等の回転により、内部の液体が矢印方向に跳ね飛ばされ、その飛沫が孔５２にかかり続けた結果、液体がエアブリーザから漏れ出す恐れがあった。
このような液体の漏れ出しを防止する構造として、特許文献１から４のものがある。 However, as shown in FIGS. 6 (a) and 6 (b), since the hole 52 is conventionally provided in the bottom surface of the breather tube tip 50 of the air breather, the liquid inside is reduced by the rotation of the gear or the like inside the speed reducer. As a result of being splashed in the direction of the arrow and the droplets being continuously applied to the holes 52, there was a risk that the liquid leaked from the air breather.
Patent Documents 1 to 4 disclose structures for preventing such liquid leakage.

実開昭６２−１００３７０号公報Japanese Utility Model Publication No. 62-100300 特開平１０−１６９７６０号公報JP-A-10-169760 特開２０００−２６６１６７号公報JP 2000-266167 A 特開平１０−６８４６０号公報Japanese Patent Laid-Open No. 10-68460

特許文献１と特許文献２の発明は、ハウジングに凹部を設け、エアブリーザの開口部を凹部に収納することにより、液体が漏れるのを防止する。
特許文献３の発明は、シートパッキンに遮蔽部を設け、ハウジングの空気抜き孔から油が噴出さないようにしている。
特許文献４の発明は、アダプタ付エアブリーザを開示しており、アダプタ底部の環状の溝から外周側に貫通する連通路が形成され、エアブリーザの端部通路を、窄まるように段々小さく形成することにより、液体が外部に流出するのを阻止している。 The inventions of Patent Literature 1 and Patent Literature 2 prevent a liquid from leaking by providing a recess in the housing and storing the opening of the air breather in the recess.
In the invention of Patent Document 3, a shielding portion is provided in the sheet packing so that oil does not blow out from the air vent hole of the housing.
The invention of Patent Document 4 discloses an air breather with an adapter, in which a communication passage that penetrates from an annular groove at the bottom of the adapter to the outer peripheral side is formed, and an end portion passage of the air breather is formed to be narrowed gradually. Therefore, the liquid is prevented from flowing out.

しかし、特許文献１〜４の発明は、いずれも、液体が外部に流出するのを予測して、組立段階で液体の噴出しを防止する措置を施したものである。従って、措置を施していない減速機でこのような問題が発生した場合は、改めて、ハウジングの加工や遮蔽部の取付、エアブリーザの交換を行う必要があり、減速機の分解及び再度の組立を要する。その結果、長期にわたり代替品を使用しなければならなくなる上、人件費等のコストや工数も多くかかる、という問題が生じる。
特許文献１〜４以外でも、図５（ａ）に示すように、配管継手４０や、減速機内部に配管する部品４２を用いたり、図５（ｂ）のように、エアブリーザのブリーザ管先端部の孔４４を覆う遮蔽板４６を設ける対応がされているが、特許文献１〜４と同様の問題を抱えるものである。 However, the inventions of Patent Documents 1 to 4 all take measures to prevent the liquid from being ejected at the assembly stage in anticipation of the liquid flowing out. Therefore, when such a problem occurs in a reduction gear that has not been provided with measures, it is necessary to process the housing, attach a shielding part, and replace the air breather again, which requires disassembly and reassembly of the reduction gear. . As a result, there arises a problem that a substitute product must be used over a long period of time, and labor costs and other costs and man-hours are increased.
Other than Patent Documents 1 to 4, as shown in FIG. 5A, a pipe joint 40 or a part 42 to be piped inside the speed reducer is used, or as shown in FIG. 5B, a breather pipe tip portion of an air breather. However, there is a problem similar to that of Patent Documents 1 to 4.

そこで、本発明は、従来技術の上記問題点に鑑み、稼働中の減速機で液体漏れが発生した場合でも、減速機の分解及び再度の組立を行わずに、エアブリーザの交換だけで対処可能な、減速機のエアブリーザの提供をその目的とする。   Therefore, in view of the above-described problems of the prior art, the present invention can be dealt with only by replacing the air breather without disassembling and reassembling the speed reducer even when a liquid leak occurs in the operating speed reducer. The purpose is to provide an air breather for a reduction gear.

本発明は、第１に、ブリーザキャップとブリーザ管からなりハウジングに取付けられる減速機のエアブリーザであって、
前記ブリーザ管が、前記ハウジングのテーパ又は平行雌ねじが形成されたねじ孔に螺合されるねじ部と先端部側面に設けられた開口部を有し、
前記ねじ部にはテーパ雄ねじが形成され、前記ねじ部の下部の外径がその全長において前記ねじ部の最小部分の谷径よりも小さいことを特徴とする減速機のエアブリーザにより、
第２に、ブリーザキャップとブリーザ管からなりハウジングに取付けられる減速機のエアブリーザであって、
ほぼＬ字型の形状である前記ブリーザ管が、前記ハウジングのテーパ又は平行雌ねじが形成されたねじ孔に螺合されるねじ部と、先端部において下向きに設けられた開口部を有し、
前記ねじ部にはテーパ雄ねじが形成され、前記ねじ部の下部の外径がその全長において前記ねじ部の最小部分の谷径よりも小さいことを特徴とする減速機のエアブリーザにより前記課題を解決した。
なお、請求項２のように、ねじ部の上部に開口部の向きを示した印を設ければ、エアブリーザをねじ込んだ後でも、印の位置により、開口部の向きが分る。
また、請求項４のように、開口部の大きさは、ブリーザ管の径方向断面の大きさの約４分の１とするのが好適である。 A first aspect of the present invention is an air breather for a speed reducer comprising a breather cap and a breather pipe and attached to a housing.
The breather tube has a screw portion that is screwed into a screw hole in which a taper or a parallel female screw of the housing is formed, and an opening portion provided on a side surface of the tip portion,
A taper male screw is formed in the screw portion, and the outer diameter of the lower portion of the screw portion is smaller than the valley diameter of the minimum portion of the screw portion in its entire length, by the air breather of the speed reducer,
Secondly, an air breather of a reduction gear which is composed of a breather cap and a breather pipe and is attached to a housing,
The breather tube having a substantially L-shape has a threaded portion that is screwed into a screw hole in which a taper or a parallel female thread of the housing is formed, and an opening portion that is provided downward at the tip portion,
The screw part is formed with a taper male screw, and the outer diameter of the lower part of the screw part is smaller than the root diameter of the minimum part of the screw part in its entire length, and the problem is solved by an air breather of a speed reducer. .
In addition, if the mark which showed the direction of the opening part is provided in the upper part of a screw part like Claim 2, the direction of an opening part will be known by the position of a mark even after screwing in an air breather.
According to a fourth aspect of the present invention, it is preferable that the size of the opening is about a quarter of the radial cross section of the breather tube.

本発明によると、エアブリーザのブリーザ管先端部側面に開口部を設けているため、減速機内部の液体が攪拌により飛散しても、液体が開口部にかかることがなく、液体がエアブリーザから漏れ出すことがない。また、ブリーザ管のねじ部の下部の外径をその全長においてねじ部の最小部分の谷径よりも小さくしているため、ハウジングの外側から本発明のエアブリーザを取付けることができ、稼働中の減速機でエアブリーザから液体漏れが発生した場合でも、本発明のエアブリーザに交換するだけでよい。従って、エアブリーザの周辺部材の分解、加工及び再度の組立の必要がないため、それらに要していた人件費等のコストや工数を削減でき、代替品も不要である。   According to the present invention, since the opening is provided at the side of the breather tube tip of the air breather, even if the liquid inside the speed reducer scatters due to stirring, the liquid does not enter the opening and the liquid leaks from the air breather. There is nothing. In addition, since the outer diameter of the lower part of the threaded portion of the breather tube is smaller than the valley diameter of the smallest part of the threaded portion in its entire length, the air breather of the present invention can be attached from the outside of the housing, and the deceleration during operation Even when liquid leaks from the air breather in the machine, it is only necessary to replace the air breather of the present invention. Accordingly, since there is no need to disassemble, process and reassemble the peripheral members of the air breather, it is possible to reduce costs and man-hours such as labor costs, and no substitutes are required.

（ａ）は、本発明の第１実施形態の減速機のエアブリーザの縦断面図、（ｂ）は、本発明の第１実施形態のエアブリーザを具えた減速機の縦断面図、（ｃ）は、ｃ−ｃ線での断面図。(A) is a longitudinal sectional view of the air breather of the speed reducer according to the first embodiment of the present invention, (b) is a longitudinal sectional view of the speed reducer provided with the air breather of the first embodiment of the present invention, and (c) is Sectional drawing in the cc line. （ａ）は、本発明の第２実施形態の減速機のエアブリーザの縦断面図、（ａ’）は、ａ’−ａ’線での断面図、（ｂ）〜（ｄ）は、（ａ）をそれぞれ内回りに９０度、１８０度、２７０度回転させた図。(A) is a longitudinal cross-sectional view of the air breather of the reduction gear of the second embodiment of the present invention, (a ′) is a cross-sectional view taken along the line a′-a ′, and (b) to (d) are (a) ) Are rotated inward by 90 degrees, 180 degrees, and 270 degrees, respectively. （ａ）は、本発明の第３実施形態の減速機のエアブリーザの縦断面図、（ｂ）は、本発明の第３実施形態のエアブリーザを具えた減速機の縦断面図。(A) is a longitudinal cross-sectional view of the air breather of the speed reducer of 3rd Embodiment of this invention, (b) is a longitudinal cross-sectional view of the speed reducer provided with the air breather of 3rd Embodiment of this invention. （ａ）及び（ｂ）は、本発明の減速機のエアブリーザのブリーザキャップの詳細縦断面図。(A) And (b) is a detailed longitudinal cross-sectional view of the breather cap of the air breather of the reduction gear of this invention. （ａ）及び（ｂ）は、従来の液体漏れを防止する対策を施した減速機の縦断面図。(A) And (b) is a longitudinal cross-sectional view of the speed reducer which took the countermeasure which prevents the conventional liquid leak. （ａ）及び（ｂ）は、液体漏れの防止策がなされていない、減速機の縦断面図。(A) And (b) is a longitudinal cross-sectional view of the reduction gear in which the measure for preventing liquid leakage is not taken.

以下、添付図面１〜４を参照して、本発明の実施形態を説明する。但し、本発明はこれらの実施形態に限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings 1 to 4. However, the present invention is not limited to these embodiments.

まず、図１と図４を参照して、本発明の第１実施形態の減速機のエアブリーザについて説明する。
本発明のエアブリーザ１は、ブリーザキャップ１２とブリーザ管１４から構成される。 First, with reference to FIG. 1 and FIG. 4, the air breather of the reduction gear of 1st Embodiment of this invention is demonstrated.
The air breather 1 of the present invention includes a breather cap 12 and a breather pipe 14.

図４は、ブリーザキャップ１２の詳細縦断面図で、（ａ）は屋内用のブリーザキャップ、（ｂ）は屋外用のブリーザキャップである。両方とも、内部に連通孔１２０、側面に空気孔１２２、上部に蓋部分１２４、Ｏリング１２６を有し、Ｏリング１２６により、蓋部分１２４の接続部がシールされている。ハウジング内部の空気は、連通孔１２０を通って空気孔１２２から抜ける（矢印参照）。なお、図示はしないが、内部にフィルタを設ければ、粉塵の多い環境下でも、外部から減速機に異物が流入するのを防ぎつつ、空気を抜くことができる。   4A and 4B are detailed longitudinal sectional views of the breather cap 12. FIG. 4A is an indoor breather cap, and FIG. 4B is an outdoor breather cap. Both have a communication hole 120 inside, an air hole 122 on the side, a lid portion 124 on the top, and an O-ring 126, and the connecting portion of the lid portion 124 is sealed by the O-ring 126. Air inside the housing escapes from the air hole 122 through the communication hole 120 (see arrow). Although not shown, if a filter is provided inside, air can be extracted while preventing foreign matter from flowing into the reduction gear from the outside even in a dusty environment.

ブリーザ管１４には、ハウジング６０のねじ孔６２に螺合されるテーパ状のねじ部１４ａ及び開口部１４ｂが設けられている。
開口部１４ｂは、ブリーザ管１４の先端部側面に設けられているため、図１（ｂ）に示すように、軸Ａが回転することにより、ハウジング６０内部の液体がエアブリーザ１の方向に飛散してもブリーザ管１４の底面に跳ね返される（矢印参照）。従って、液体が開口部１４ｂにかからず、エアブリーザ１からの液体漏れを防止できる。
開口部１４ｂの大きさは、ブリーザ管１４の径方向断面の大きさの約４分の１とするのが好適である（図１（ｃ）斜線部参照）。 The breather tube 14 is provided with a tapered screw portion 14 a and an opening portion 14 b that are screwed into the screw hole 62 of the housing 60.
Since the opening portion 14b is provided on the side surface of the distal end portion of the breather tube 14, as shown in FIG. However, it is bounced back to the bottom of the breather tube 14 (see arrow). Therefore, the liquid does not reach the opening 14b, and liquid leakage from the air breather 1 can be prevented.
The size of the opening 14b is preferably about a quarter of the radial cross section of the breather tube 14 (see the hatched portion in FIG. 1 (c)).

ねじ部１４ａには、テーパ雄ねじが使用され、ねじ孔６２には、テーパ雌ねじ又は平行雌ねじが使用される。ねじ部１４ａをテーパ雄ねじとすることで、くさび作用によりねじ部１４ａとねじ孔６２の締結強度が増すため、減速機の作動中にエアブリーザ１が緩まず、エアブリーザ１とねじ孔６２の間から油漏れ等が発生するのを防止できる。
なお、図示はしないが、密閉性をより高めるため、シールテープをねじ部１４ａに巻付けて使用したり、或いは、シールボンドのような、緩み止め機能を有するシール剤を塗布してもよい。 A tapered male screw is used for the screw portion 14a, and a tapered female screw or a parallel female screw is used for the screw hole 62. By making the threaded portion 14a a tapered male screw, the fastening strength between the threaded portion 14a and the screw hole 62 is increased due to the wedge action, so that the air breather 1 does not loosen during the operation of the speed reducer, and the oil between the air breather 1 and the screw hole 62 It is possible to prevent leakage and the like from occurring.
Although not shown, in order to further improve the sealing performance, a sealing tape may be used by wrapping around the screw portion 14a, or a sealing agent having a loosening prevention function such as a seal bond may be applied.

また、ねじ部の下部１４ｃの外径Ｄを、その全長において、ねじ部１４ａの最小部分の谷径よりも小さくしているため、ハウジング６０の外側からエアブリーザ１を取付けることができる。従って、図６の減速機で液体漏れが発生した場合でも、エアブリーザ１に交換するだけでよく、ハウジング６０や周辺部材の分解、加工及び再度の組立が不要である。   Further, since the outer diameter D of the lower portion 14c of the screw portion is smaller than the valley diameter of the minimum portion of the screw portion 14a in the entire length, the air breather 1 can be attached from the outside of the housing 60. Therefore, even when a liquid leak occurs in the speed reducer of FIG. 6, it is only necessary to replace the air breather 1, and the housing 60 and peripheral members need not be disassembled, processed, and reassembled.

さらに、ハウジング６０にエアブリーザ１をねじ込む際、その締め方を調整することで、開口部１４ｂの向きを変えることができる。
例えば、図１（ｃ）左図の状態から開口部１４ｂを図１（ｃ）中央図の向きにしたい場合は、中央図の矢印方向にエアブリーザ１を締める。図１（ｃ）右図の向きにしたい場合は、右図の矢印方向にエアブリーザ１を緩めればよい。 Furthermore, when the air breather 1 is screwed into the housing 60, the direction of the opening 14b can be changed by adjusting the tightening method.
For example, when the opening 14b is desired to be oriented in the central view of FIG. 1C from the state shown in the left view of FIG. 1C, the air breather 1 is tightened in the direction of the arrow in the central view. If it is desired to make the orientation shown in the right diagram of FIG.

次に、図２を参照して、本発明の第２実施形態について、第１実施形態と異なる部分を説明する。
第１実施形態のエアブリーザは、ハウジングにエアブリーザをねじ込んだ後は、開口部の向きが分らなくなる。
そこで、本実施形態においては、ねじ部の上部に開口部の向きを示す印を設けることで、エアブリーザをねじ込んだ後でも、開口部の向きが分るようにした。 Next, with reference to FIG. 2, a different part from 1st Embodiment is demonstrated about 2nd Embodiment of this invention.
In the air breather of the first embodiment, the direction of the opening cannot be understood after the air breather is screwed into the housing.
Therefore, in this embodiment, the direction of the opening can be recognized even after the air breather is screwed in by providing a mark indicating the direction of the opening on the upper part of the screw.

図２（ａ）下図に示すように、開口部２４ｂの位置に対応するねじ部の上部２４ｄの側面に印２６を設ける。エアブリーザ２のねじ込み具合により、開口部２４ｂの位置が変わっても（図２（ｂ）〜（ｄ）参照）、印２６の位置により、開口部２４ｂの向きが分かる。
印２６をつけるには、刻印などが好適である。 2A, a mark 26 is provided on the side surface of the upper portion 24d of the screw portion corresponding to the position of the opening 24b. Even if the position of the opening 24b changes due to the screwed condition of the air breather 2 (see FIGS. 2B to 2D), the direction of the opening 24b can be determined by the position of the mark 26.
In order to make the mark 26, a stamp or the like is suitable.

最後に、図３を参照して、本発明の第３実施形態について、第１実施形態と異なる部分を説明する。   Finally, with reference to FIG. 3, a different part from 1st Embodiment is demonstrated about 3rd Embodiment of this invention.

図３（ａ）に示すように、本実施形態のエアブリーザ３においては、ブリーザ管３４の形状をほぼＬ字型とし、開口部３４ｂは、ブリーザ管３４の先端部において下向きになるように形成されている。このようにすることで、図３（ｂ）のように、エアブリーザ３を水平方向に取付けた場合に、ハウジング６０内部の液体が矢印で示した方向に飛散しても、ブリーザ管３４によって液体が跳ね返されるため、開口部３４ｂに液体がかからない。このように、ブリーザ管３４の形状を変更しても、他の実施形態と同様に、エアブリーザ３からの液体漏れを防止できる。   As shown in FIG. 3A, in the air breather 3 of the present embodiment, the shape of the breather tube 34 is substantially L-shaped, and the opening 34b is formed so as to face downward at the tip of the breather tube 34. ing. In this way, as shown in FIG. 3B, when the air breather 3 is mounted in the horizontal direction, even if the liquid inside the housing 60 scatters in the direction indicated by the arrow, the liquid is caused by the breather pipe 34. Since it is rebounded, no liquid is applied to the opening 34b. As described above, even if the shape of the breather tube 34 is changed, liquid leakage from the air breather 3 can be prevented as in the other embodiments.

以上説明したように、本発明の減速機のエアブリーザによれば、ブリーザ管の開口部を先端部側面又は先端部において下向きに設けることにより、ハウジング内部で飛び跳ねた液体が直接開口部にかかることがないため、エアブリーザからの液体漏れを防止できる。
また、ねじ部の下部の外径が、その全長において、ねじ部の最小部分の谷径よりも小さいため、ハウジングの外側からエアブリーザ用のねじ孔にねじ込んで取付けることができる。従って、本発明のエアブリーザを使用していない減速機で液体漏れが発生した場合でも、本発明のエアブリーザに交換するだけでよく、ハウジング等減速機自体の加工をしなくてよいため、コストや工数の削減につながる。 As described above, according to the air breather of the speed reducer of the present invention, by providing the opening portion of the breather tube downward on the side surface or the tip portion of the tip portion, the liquid splashed inside the housing may be directly applied to the opening portion. Therefore, liquid leakage from the air breather can be prevented.
Further, since the outer diameter of the lower portion of the screw portion is smaller than the valley diameter of the minimum portion of the screw portion in the entire length, the screw portion can be screwed into the screw hole for the air breather from the outside of the housing. Therefore, even if a liquid leak occurs in the speed reducer that does not use the air breather of the present invention, it is only necessary to replace the air breather of the present invention, and it is not necessary to process the speed reducer itself such as a housing. Leads to reduction.

１、２、３ エアブリーザ
１２、２２、３２ ブリーザキャップ
１４、２４、３４ ブリーザ管
１４ａ、２４ａ、３４ａ ねじ部
１４ｂ、２４ｂ、３４ｂ 開口部
１４ｃ、２４ｃ、３４ｃ ねじ部の下部
２４ｄ ねじ部の上部
２６ 印
６０ ハウジング
６２ ねじ孔 1, 2, 3 Air breather 12, 22, 32 Breather cap 14, 24, 34 Breather pipe 14a, 24a, 34a Screw part 14b, 24b, 34b Opening part 14c, 24c, 34c Screw part lower part 24d Screw part upper part 26 Mark 60 Housing 62 Screw hole

Claims (4)

ブリーザキャップとブリーザ管からなりハウジングに取付けられる減速機のエアブリーザであって、
前記ブリーザ管が、前記ハウジングのテーパ又は平行雌ねじが形成されたねじ孔に螺合されるねじ部と先端部側面に設けられた開口部を有し、
前記ねじ部にはテーパ雄ねじが形成され、前記ねじ部の下部の外径がその全長において前記ねじ部の最小部分の谷径よりも小さいことを特徴とする、
減速機のエアブリーザ。 An air breather for a speed reducer that consists of a breather cap and a breather pipe and is attached to the housing.
The breather tube has a screw portion that is screwed into a screw hole in which a taper or a parallel female screw of the housing is formed, and an opening portion provided on a side surface of the tip portion,
The threaded portion is formed with a taper male screw, and the outer diameter of the lower portion of the threaded portion is smaller than the valley diameter of the minimum portion of the threaded portion in its entire length,
Reducer air breather. 前記ねじ部の上部に前記開口部の向きを示す印が設けられた、請求項１の減速機のエアブリーザ。   The air breather of the speed reducer according to claim 1, wherein a mark indicating an orientation of the opening is provided on an upper portion of the screw portion. ブリーザキャップとブリーザ管からなりハウジングに取付けられる減速機のエアブリーザであって、
ほぼＬ字型の形状である前記ブリーザ管が、前記ハウジングのテーパ又は平行雌ねじが形成されたねじ孔に螺合されるねじ部と、先端部において下向きに設けられた開口部を有し、
前記ねじ部にはテーパ雄ねじが形成され、前記ねじ部の下部の外径がその全長において前記ねじ部の最小部分の谷径よりも小さいことを特徴とする、
減速機のエアブリーザ。 An air breather for a speed reducer that consists of a breather cap and a breather pipe and is attached to the housing.
The breather tube having a substantially L-shape has a threaded portion that is screwed into a screw hole in which a taper or a parallel female thread of the housing is formed, and an opening portion that is provided downward at the tip portion,
The threaded portion is formed with a taper male screw, and the outer diameter of the lower portion of the threaded portion is smaller than the valley diameter of the minimum portion of the threaded portion in its entire length,
Reducer air breather. 前記開口部の大きさが前記ブリーザ管の径方向断面の大きさの約４分の１である、請求項１から３のいずれかの減速機のエアブリーザ。   The air breather of a reduction gear according to any one of claims 1 to 3, wherein a size of the opening is about one-fourth of a size of a radial cross section of the breather tube.
JP2010042216A 2010-02-26 2010-02-26 Air breather of reduction gear Pending JP2011179540A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103075496A (en) * 2013-02-03 2013-05-01 徐州科源液压股份有限公司 Air breather with one-way function for truck-mounted crane winch planet gear speed reducer
CN110425407A (en) * 2019-08-23 2019-11-08 哈尔滨电气动力装备有限公司 The multi-functional oiling respirator that motor bearings uses

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54158173U (en) * 1978-04-25 1979-11-05
JPS59186570U (en) * 1983-05-31 1984-12-11 日産ディーゼル工業株式会社 air breather
JPS62100370U (en) * 1985-12-13 1987-06-26
JPH0254953U (en) * 1988-10-17 1990-04-20
GB2260503A (en) * 1991-10-09 1993-04-21 Rover Group A breather
JPH0729373U (en) * 1993-11-04 1995-06-02 日野自動車工業株式会社 Breather
JP2002061787A (en) * 2000-08-16 2002-02-28 Osaka Gas Co Ltd In-pipe inserting device for in-pipe working device
JP2006283790A (en) * 2005-03-31 2006-10-19 Makishinkoo:Kk Oil filler plug of gear casing
JP2007064425A (en) * 2005-09-01 2007-03-15 Toyota Motor Corp Breather plug

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54158173U (en) * 1978-04-25 1979-11-05
JPS59186570U (en) * 1983-05-31 1984-12-11 日産ディーゼル工業株式会社 air breather
JPS62100370U (en) * 1985-12-13 1987-06-26
JPH0254953U (en) * 1988-10-17 1990-04-20
GB2260503A (en) * 1991-10-09 1993-04-21 Rover Group A breather
JPH0729373U (en) * 1993-11-04 1995-06-02 日野自動車工業株式会社 Breather
JP2002061787A (en) * 2000-08-16 2002-02-28 Osaka Gas Co Ltd In-pipe inserting device for in-pipe working device
JP2006283790A (en) * 2005-03-31 2006-10-19 Makishinkoo:Kk Oil filler plug of gear casing
JP2007064425A (en) * 2005-09-01 2007-03-15 Toyota Motor Corp Breather plug

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103075496A (en) * 2013-02-03 2013-05-01 徐州科源液压股份有限公司 Air breather with one-way function for truck-mounted crane winch planet gear speed reducer
CN110425407A (en) * 2019-08-23 2019-11-08 哈尔滨电气动力装备有限公司 The multi-functional oiling respirator that motor bearings uses
CN110425407B (en) * 2019-08-23 2024-05-24 哈尔滨电气动力装备有限公司 Multifunctional oiling respirator for motor bearing

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