KR100787304B1 - Air breather for rearaxle - Google Patents

Air breather for rearaxle Download PDF

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Publication number
KR100787304B1
KR100787304B1 KR1020060135061A KR20060135061A KR100787304B1 KR 100787304 B1 KR100787304 B1 KR 100787304B1 KR 1020060135061 A KR1020060135061 A KR 1020060135061A KR 20060135061 A KR20060135061 A KR 20060135061A KR 100787304 B1 KR100787304 B1 KR 100787304B1
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KR
South Korea
Prior art keywords
air breather
rear axle
pin rod
plug
housing
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KR1020060135061A
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Korean (ko)
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정현동
김종태
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쌍용자동차 주식회사
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00Arrangement or mounting of transmissions in vehicles
    • B60K17/22Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/02Gearboxes; Mounting gearing therein
    • F16H57/027Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Details Of Gearings (AREA)

Abstract

An air breather used for a power transmission system is provided to relieve the pressure built in a rear axle housing by opening a valve with the pressure and closing the valve with a spring, and to block entering of foreign material and moisture with a dust cap. An air breather has a plug(1) assembled to a side of a rear axle housing, a pin rod(2) capable of sliding up and down at the center of the plug, a spring(4) placed between the plug and a support(3) fastened at the lower end of the pin rod to provide recovery force, an o-ring(5) placed between the plug and the pin rod for sealing, and a dust cap(6) assembled to the plug to open and close for preventing entering of foreign material and moisture.

Description

리어액슬용 에어브리더{AIR BREATHER FOR REARAXLE}Air breather for rear axle {AIR BREATHER FOR REARAXLE}

도 1은 본 발명의 리어액슬용 에어브리더를 도시한 분해 사시도.1 is an exploded perspective view showing an air breather for a rear axle of the present invention.

도 2는 본 발명의 종단면도.2 is a longitudinal sectional view of the present invention;

도 3은 본 발명의 작동 상태 단면도.Figure 3 is a cross-sectional view of the operating state of the present invention.

*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings

1-고정 플러그 2-유동 핀로드1-Fix Plug 2-Fluid Pin Rod

3-서포트 4-스프링3-support 4-spring

5-밀봉부재 6-더스트캡5-sealing member 6-dust cap

본 발명은 동력전달장치에 적용되는 에어브리더에 관한 것으로서, 특히 하우징 내부의 압력 상승에 의해 개방되고 탄성 복원력에 의해 폐쇄됨에 의하여, 상승압력을 외부로 배출하고 동시에 외부 수분의 유입을 차단할 수 있도록 한 리어액슬용 에어브리더에 관한 것이다.The present invention relates to an air breather applied to a power transmission device, and in particular, is opened by a pressure increase inside a housing and closed by an elastic restoring force, so that the rising pressure can be discharged to the outside and at the same time to block the inflow of external moisture. An air breather for a rear axle.

일반적으로 차량 주행 시, 액슬의 종감속기어가 회전하게 되므로, 기어오일의 비산과 동시에 하우징 내부에 압력이 상승하게 되며, 하우징 내부의 상승압력을 하우징 외부로 배출시키기 위하여 에어브리더(air breather)를 구비하고 있다. In general, since the deceleration gear of the axle rotates while driving the vehicle, pressure increases in the housing at the same time as the gear oil is scattered, and an air breather is provided to discharge the upward pressure inside the housing to the outside of the housing. Doing.

종래 공지된 에어브리더의 일 예가 국내 실용신안공고 제 97-01997호에 개시되어 있다. 이는 중심공이 형성되고 하단부에 변속기 하우징에 나사결합되는 나사체결부가 형성되며, 그 외주면에 중심공과 연통되게 원주방향 및 수직방향으로 홈이 형성된 에어브리더몸체와, 상기 홈의 일부가 노출되도록 브리더몸체의 상단부에 결합되는 캡으로 이루어진다. An example of a conventionally known air breather is disclosed in Korean Utility Model Publication No. 97-01997. It has a center hole is formed and a screw fastening portion is screwed to the transmission housing at the lower end is formed, the air breather body formed with grooves in the circumferential and vertical direction in communication with the center hole on the outer peripheral surface of the breather body so that a portion of the groove is exposed It consists of a cap coupled to the upper end.

이러한 에어브리더는 변속기내의 상승압력이 중심공을 경유하여 홈을 통해 외부로 배출되도록 된 구조를 가진다.This air breather has a structure in which the upward pressure in the transmission is discharged to the outside through the groove via the center hole.

종래 공지된 에어브리더에 있어서는 오픈 타입 등의 형태로 리어 서브프레임이나 차체의 언더바디 등의 구동계에서 높은 부위에 장착함으로써, 외부로부터 유입되는 수반을 차단하고자 했다.In the conventionally known air breather, an open type or the like is mounted on a high portion of a drive system such as a rear subframe or an underbody of a vehicle body to block accompanying water from the outside.

또한 종래의 에어브리더에 있어서는 캡이 손상될 경우 외부에서 수분 및 이물질이 유입되는 문제점이 있었으며, 이를 고려하여 첵밸브 타입의 에어브리더가 개시되어 있으나, 이는 수분 유입을 차단하기 위한 스프링의 노후 및 변형에 대한 보정이 고려되지 못하고 있는 실정이다.In addition, in the conventional air breather, there is a problem in that water and foreign matter flows in from the outside when the cap is damaged, but in consideration of this, a valve-type air breather has been disclosed, but this is the deterioration and deformation of the spring to block water The correction for is not considered.

본 발명은 상술한 종래 기술의 문제점을 해결하기 위한 것으로서, 하우징 내부의 팽창 압력을 이용하여 밸브 구조를 개방하고, 탄성 복원력에 의해 폐쇄 작동시키며, 더스트캡을 부가하여 먼지 등의 이물질 및 수분을 효과적으로 차단할 수 있도록 한 리어액슬용 에어브리더를 제공함에 그 목적을 두고 있다.The present invention is to solve the above-described problems of the prior art, by using the expansion pressure inside the housing to open the valve structure, close operation by the elastic restoring force, by adding a dust cap to effectively remove foreign substances such as dust and moisture Its purpose is to provide an air breather for the rear axle that can be blocked.

상기 목적에 따라, 본 발명에서는 리어액슬 하우징 내부의 상승압력을 배출시키고 수분 유입을 차단할 수 있도록 구성함에 있어서, 상기 하우징에 결합되는 고정 플러그와, 상기 고정플러그의 중심에 위치되는 유동 핀로드와, 상기 핀로드의 하단부에 체결되는 서포트와, 상기 서포트와 고정 플러그의 사이에 탄설되어 핀로드에 복원력을 부여하는 스프링을 포함하여 구성하고, 아울러 고정 플러그와 핀로드의 사이에 O-링을 개재하여 밀봉하며, 상기 고정 플러그에는 개폐 가능한 더스트캡을 결합하여 구성된 리어액슬용 에어브리더를 제안한다.According to the above object, in the present invention configured to discharge the rising pressure inside the rear axle housing and to block the inflow of water, a fixed plug coupled to the housing, a floating pin rod located in the center of the fixed plug, And a support fastened to the lower end of the pin rod, and a spring which is installed between the support and the fixing plug to impart a restoring force to the pin rod, and is interposed between the fixing plug and the pin rod. It proposes an air breather for a rear axle which seals and is configured by combining a dust cap which can be opened and closed to the fixing plug.

이하 첨부 도면에 의거하여 본 발명의 바람직한 일 실시예를 더욱 상세히 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 리어액슬용 에어브리더 전체 조립 구성을 보여주고 있으며, 도 2 및 도 3은 내부 구조와 작동 상태를 보여주고 있다.Figure 1 shows the entire assembly configuration of the air axle for the rear axle of the present invention, Figures 2 and 3 shows the internal structure and the operating state.

도면을 통하여 알 수 있는 바와 같이, 본 발명의 리어액슬용 에어브리더는 리어액슬 하우징의 소정 위치에 직립되게 설치되어서, 하우징 내부의 압력 상승을 외부로 배출시키기 위하여 구성된다.As can be seen from the figure, the rear axle air breather of the present invention is installed upright at a predetermined position of the rear axle housing, is configured to discharge the pressure rise inside the housing to the outside.

구체적으로, 본 발명의 에어브리더는 하우징을 관통하여 나사 결합 방식으로 체결되고 하우징 내부와 연통될 수 되는 중공이 형성된 고정 플러그(1)와, 이 고정 플러그(1)의 중심에 위치되어 승강되면서 밸브 구조를 개폐하는 유동 핀로드(2)의 주요 구성으로 이루어진다.Specifically, the air breather of the present invention is a fixed plug (1) having a hollow that can be connected to the inside of the housing and fastened in a screwed manner through the housing, and is positioned in the center of the fixed plug (1) to lift the valve It consists of the main configuration of the floating pin rod (2) for opening and closing the structure.

유동 핀로드(2)는 하단부에 서포트(3)를 체결하고, 상기 서포트(3)를 이용하 여 고정 플러그(1)의 내부 상면과의 사이에 스프링(4)을 탄설하여 구성함으로써, 상기 고정 플러그(1)에 탄성적으로 개폐가능하게 결합되는 것이다. 스프링(4)은 압력 배출시 상승된 유동 핀로드(2)가 다시 하강 폐쇄될 수 있도록 복원력을 부여하기 위한 것이다.The floating pin rod 2 fastens the support 3 to the lower end, and uses the support 3 to install a spring 4 between the upper surface of the fixing plug 1 to form the fixed plug. It is coupled to the elastically openable (1). The spring 4 is for imparting restoring force so that the raised flow pin rod 2 can be closed down again upon pressure release.

고정 플러그(1)와 유동 핀로드(2)의 접촉면에는 밀폐성을 향상시켜 외부로 부터 수분 및 먼지 등의 이물질이 유입되는 것을 차단하기 위하여, O-링과 같은 밀봉부재(5)을 개재하여 구성한다.The contact surface between the fixed plug 1 and the floating pin rod 2 is formed through a sealing member 5 such as an O-ring to improve the sealing property and to prevent foreign substances such as moisture and dust from flowing from the outside. do.

또한, 상기 고정 플러그(1)의 상단 테두리에는 개폐 가능하도록 더스트캡(6)을 결합하여 이물질 및 수분의 유입을 차단한다. 더스트캡(6)은 합성수지 또는 금속 재질로 형성할 수 있으며, 통상 플라스틱 캡을 주로 사용한다.In addition, the upper edge of the fixing plug 1 is coupled to the dust cap 6 to be opened and closed to block the inflow of foreign matter and moisture. The dust cap 6 may be formed of a synthetic resin or a metal, and usually uses a plastic cap.

이와 같이 구성된 본 발명의 리어액슬용 에어브리더의 개폐 작동 상태를 설명하면 다음과 같다.Referring to the opening and closing operation state of the rear axle air breather of the present invention configured as described above are as follows.

본 발명의 에어브리더는 폐회로 시에는 도 2와 같이 구성된다.Air breather of the present invention is configured as shown in FIG.

이후 하우징 내부에서 가열된 공기가 팽창을 하게 되면, 도 3과 같이 개회로 상태로 된다. 이때 팽창 공기는 유동 핀로드(2)의 하부 면을 밀어올려 밀폐된 공간을 개방하게 되는 것이다.Thereafter, when the heated air expands in the housing, the open circuit is shown in FIG. 3. At this time, the expansion air is to open the closed space by pushing the lower surface of the flow pin rod (2).

밸브 구조가 개방될 때 수직 변위량이 너무 크게 되거나 정위치로의 복원 속도가 느릴 경우, 수분이 유입될 수 있기 때문에, 이를 방지하기 위하여 스프링(4)의 탄성력을 이용하여 복원한다. 또한, 더스트캡(6)에 의하여 수분 및 이물질의 유입을 1차적으로 차단할 수 있는 것이다.If the amount of vertical displacement becomes too large when the valve structure is opened or the recovery speed to the home position is slow, water may flow in, so that it is restored by using the elastic force of the spring 4 to prevent this. In addition, the dust cap (6) will be able to primarily block the inflow of water and foreign matter.

한편, 유동 핀로드(2)의 하단에 결합되는 서포트(3)는 원형으로 형성할 경우, 고정 플러그(1)의 중공을 막아 공기 배출량이 적어진다. 이러한 구조적인 단점을 해결하기 위하여, 본 발명에서는 폭이 좁고 긴 플레이트 형상으로 구성한다.On the other hand, when the support 3 coupled to the lower end of the flow pin rod (2) is formed in a circular shape, the air emissions are reduced by blocking the hollow of the fixing plug (1). In order to solve this structural disadvantage, the present invention is configured in a narrow and long plate shape.

이상에서 설명한 바와 같이, 본 발명의 리어액슬용 에어브리더는 하우징 내부의 압력 상승에 따라 밸브 구조를 개방하고, 스프링의 탄성 복원력에 의해 폐쇄 작동시키며, 더스트캡을 부가하여 구성함으로써, 먼지 등의 이물질 및 수분을 효과적으로 차단할 수 있는 것이다.As described above, the rear axle air breather of the present invention opens the valve structure according to the pressure rise inside the housing, and is closed by the elastic restoring force of the spring. And can effectively block moisture.

Claims (3)

리어액슬 하우징 내부의 상승압력을 배출시키고, 수분 유입을 차단하기 위한 리어액슬용 에어브리더에 있어서, In a rear axle air breather for discharging the rising pressure inside the rear axle housing and blocking water inflow, 상기 하우징에 결합되는 고정 플러그와; 상기 고정플러그의 중심에 위치되는 유동 핀로드와; 상기 핀로드의 하단부에 체결되는 서포트와; 상기 서포트와 고정 플러그의 사이에 탄설되어 핀로드에 복원력을 부여하는 스프링을 포함하여 구성된 것을 특징으로 하는 리어액슬용 에어브리더.A fixed plug coupled to the housing; A floating pin rod positioned at the center of the fixing plug; A support fastened to a lower end of the pin rod; A rear axle air breather, characterized in that it comprises a spring that is installed between the support and the fixed plug to impart a restoring force to the pin rod. 제 1 항에 있어서, 고정 플러그와 핀로드의 사이에 개재되는 밀봉부재와, 상기 고정 플러그에 개폐 가능하게 결합되는 더스트캡을 더 포함하는 리어액슬용 에어브리더.The air breather for a rear axle of claim 1, further comprising a sealing member interposed between the fixed plug and the pin rod, and a dust cap coupled to the fixed plug so as to be openable and closed. 제 1 항에 있어서, 서포트는 폭이 좁고 긴 플레이트 형상으로 구성한 것임을 특징으로 하는 리어액슬용 에어브리더.The rear axle air breather according to claim 1, wherein the support has a narrow width and a long plate shape.
KR1020060135061A 2006-12-27 2006-12-27 Air breather for rearaxle KR100787304B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101000133B1 (en) * 2008-07-09 2010-12-10 현대자동차주식회사 Air bleeder for rear axle
KR101144484B1 (en) 2010-04-09 2012-05-11 현대위아 주식회사 Air-Breather of transmission
CN113459720A (en) * 2021-08-02 2021-10-01 康迈(南京)机械有限公司 Take lubricated commercial car wheel hub of oil of ventilative waterproof function to ventilate stopper and wheel hub

Citations (5)

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Publication number Priority date Publication date Assignee Title
US4554844A (en) * 1982-03-31 1985-11-26 Toyota Jidosha Kabushiki Kaisha Air breather for power transmission unit
KR970001997Y1 (en) * 1994-06-20 1997-03-17 대우자동차 주식회사 Air breather
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KR19990020788U (en) 1997-11-28 1999-06-25 정몽규 Air Breather for Pressure Control of Manual Transmission
KR100279972B1 (en) * 1997-10-15 2001-03-02 정몽규 Air Breather for Pressure Adjustment of Manual Transmission

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Publication number Priority date Publication date Assignee Title
KR101000133B1 (en) * 2008-07-09 2010-12-10 현대자동차주식회사 Air bleeder for rear axle
KR101144484B1 (en) 2010-04-09 2012-05-11 현대위아 주식회사 Air-Breather of transmission
CN113459720A (en) * 2021-08-02 2021-10-01 康迈(南京)机械有限公司 Take lubricated commercial car wheel hub of oil of ventilative waterproof function to ventilate stopper and wheel hub

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