KR20030026021A - Propeller shaft for automotive vehicle - Google Patents

Propeller shaft for automotive vehicle Download PDF

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Publication number
KR20030026021A
KR20030026021A KR1020010058997A KR20010058997A KR20030026021A KR 20030026021 A KR20030026021 A KR 20030026021A KR 1020010058997 A KR1020010058997 A KR 1020010058997A KR 20010058997 A KR20010058997 A KR 20010058997A KR 20030026021 A KR20030026021 A KR 20030026021A
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KR
South Korea
Prior art keywords
yoke
tube
propulsion shaft
shaft
tube portion
Prior art date
Application number
KR1020010058997A
Other languages
Korean (ko)
Inventor
고영진
Original Assignee
현대자동차주식회사
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Application filed by 현대자동차주식회사 filed Critical 현대자동차주식회사
Priority to KR1020010058997A priority Critical patent/KR20030026021A/en
Publication of KR20030026021A publication Critical patent/KR20030026021A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/02—Shafts; Axles
    • F16C3/023—Shafts; Axles made of several parts, e.g. by welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/10—Aluminium or alloys thereof
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/30—Material joints
    • F16C2226/40—Material joints with adhesive

Abstract

PURPOSE: A propeller shaft for an automotive vehicle is provided to achieve improved strength of the welded part between the tube part and the yoke part, while shortening the process time. CONSTITUTION: A tube part(20) made of a lightweight aluminum member, and a yoke part(22) coupled to front/rear ends of the tube part are coupled with each other through the welding process using a metal bonding agent(M). The tube part has a perforation hole(20a) for injection of the metal bonding agent, and the yoke part has an incision groove(22a) formed along the circumference of the yoke part so as to form a bonding layer(L).

Description

자동차의 추진축{propeller shaft for automotive vehicle}Propeller shaft for automotive vehicle

본 발명은 자동차의 추진축에 관한 것으로, 보다 상세하게는 추진축을 이루는 부재의 재질을 알루미늄재의 경량부재로 함과 더불어 요크부와 튜브부 사이의 접합을 금속접착제를 이용함으로써, 용접부위에 대한 접합강도를 향상시킬 수 있도록 하는 자동차의 추진축에 관한 것이다.The present invention relates to a propulsion shaft of a motor vehicle. More specifically, the material of the propulsion shaft is made of a lightweight member made of aluminum, and the joint strength between the yoke portion and the tube portion is made of metal by using a metal adhesive. It is about the propulsion shaft of a car that can be improved.

일반적으로 자동차의 추진축(Propeller Shaft)은 엔진에서 발생되어 변속기를 거친 동력을 휠허브로 전달하는 역할을 하도록 된 것인 바, 이 추진축은 전륜측 변속기의 아웃풋 샤프트와 후륜측 디퍼런셜기어와의 사이에 각기 두 개의 등속조인트를 매개로 연결되어 있는 데, 이러한 추진축은 대개 끊임없이 변동되는 엔진의 토오크를 받으면서 고속으로 회전되므로 비틀림진동을 일으키기 쉽고, 또 축이 구부러지거나 기하학적인 중심과 질량의 중심이 일치하지 않을 때에는 휠링이라는 굽힘진동을 일으킬 수도 있다.In general, the propeller shaft of a car is generated from an engine to transfer power through a transmission to a wheel hub, which is formed between the output shaft of the front gearbox and the differential wheel of the rear wheel. They are connected by two constant velocity joints, and these propulsion shafts are rotated at high speed, usually under constant fluctuations of the engine, so they are easy to cause torsional vibrations, and the shafts are not bent If not, it may cause bending vibration called wheeling.

즉, 상기 추진축은 엔진이 차체의 앞부분인 엔진룸내에 장착되면서 구동은 뒷쪽의 후륜에서 이루어지는 소위 앞기관 뒷바퀴 구동의 후륜구동차(FR;Front engine Rear wheel drive car)에서 구비되는 것으로, 상기 추진축은 스틸재로 튜브부가 두 개의 부재로 이루어진 투피스(two piece) 타입과, 알루미늄재의 경량부재로서 하나의 부재로 이루어진 원피스(one piece) 타입으로 구분된다.That is, the propulsion shaft is provided in a so-called front engine rear wheel drive car (FR), which is driven in the rear rear wheel while the engine is mounted in the engine compartment that is the front of the vehicle body, the propulsion shaft is made of steel The tube part is divided into a two piece type consisting of two members and a one piece type consisting of one member as a lightweight member made of aluminum.

먼저, 상기 투피스 타입의 추진축은 도 1에 도시된 바와 같이, 스틸재의 전방측 축부재(10)와 후방측 축부재(12)가 각각 축이음부재(C)를 매개로 연결되고, 이 연결부위에 차체에 고정되는 센터베어링(14)이 설치되어 동력전달중 발생되는비틀림진동이나 굽힘진동을 감쇠시키도록 되어 있다.First, as shown in Figure 1, the two-piece type propulsion shaft is connected to the front shaft member 10 and the rear shaft member 12 of the steel material via the shaft joint member (C), respectively, this connecting portion A center bearing 14 fixed to the vehicle body is provided to attenuate torsional vibration and bending vibration generated during power transmission.

또한, 상기 전방측 축부재(10)와 후방측 축부재(12)는 각각 축이음부재(C)를 매개로 변속기의 출력축 내지 디퍼런셜기어의 입력축과 연결되어 있다.In addition, the front shaft member 10 and the rear shaft member 12 is connected to the output shaft of the transmission to the input shaft of the differential gear via the shaft joint member (C), respectively.

그런데, 상기와 같은 스틸재의 투피스 타입 추진축은 중량이 무거우므로 차량의 하중증대에 큰 영향을 미치게 되므로 연비면에서 불리한 단점이 있다.However, the two-piece type propulsion shaft of the steel as described above has a disadvantage in terms of fuel efficiency because the weight is heavy and thus greatly affects the load increase of the vehicle.

따라서, 상기와 같은 스틸재의 투피스 타입 추진축을 대신하여 경량부재의 원피스 타입이 제안되었는 바, 이 원피스 타입의 추진축은 도 2에 도시된 바와 같다.Therefore, a one-piece type of lightweight member has been proposed in place of the two-piece type propulsion shaft made of steel as described above, and the one-piece type propulsion shaft is shown in FIG. 2.

즉, 상기 원피스 타입의 추진축은 알루미늄재의 경량부재로 이루어진 튜브부(20)와, 이 튜브부(20)의 전/후방측 선단에 각각 결합되어 축이음부재(C)와의 연결을 위한 요크부(22)로 이루어진다.That is, the one-piece type propulsion shaft is coupled to the tube portion 20 made of a lightweight member made of aluminum and the front and rear ends of the tube portion 20, respectively, and the yoke portion for connection with the shaft joint member C ( 22).

또한, 상기 축이음부재(C)는 대향되는 부재로부터 연장된 요크부(22')와 조립되어져, 동력의 전달을 수행하도록 되어 있다.Further, the shaft joint member C is assembled with the yoke portion 22 'extending from the opposing member so as to transmit power.

여기서, 상기 튜브부(20)와 요크부(22) 사이의 결합구조는 도 3에 도시된 바와 같이 튜브부(20)의 내부로 요크부(22)가 삽입되고, 이 튜브부(20)의 선단과 맞닿은 요크부(22)부위에 용접(MIG 또는 TIG용접)이 이루어져 양측의 부재를 서로 접합시키도록 되어 있다.Here, in the coupling structure between the tube portion 20 and the yoke portion 22, the yoke portion 22 is inserted into the tube portion 20, as shown in FIG. Welding (MIG or TIG welding) is performed on the yoke portion 22 in contact with the tip to join the members on both sides.

그런데, 상기와 같은 원피스 타입의 추진축에서 상기 튜브부(20)와요크부(22) 사이의 결합부위는 용접에 의해 발생되는 고열로 인하여 용접열영향부(HAZ;Heat Affected Zone)에 조직적인 변화를 일으키게 되어, 토셔널 내지 벤딩 하중이 작용하는 경우에 저하된 기계적 물성으로 파손현상이 수반되므로 내구성이 떨어지는 단점이 있다.However, in the one-piece type propulsion shaft, the coupling portion between the tube portion 20 and the yoke portion 22 has a systematic change in the heat affected zone (HAZ) due to the high heat generated by the welding. When the torsional to bending load is applied, the mechanical properties are damaged and the durability is lowered.

따라서, 상기와 같은 용접부위에서의 기계적 물성 저하를 방지하기 위해서 마찰용접을 실시하여 열영향부위를 최소화하고자 하는 노력이 시행되었는 데, 이 마찰용접공정은 두 부재 사이의 위상차를 맞추기 위해 고가의 장비가 요구되므로 원가부담을 초래하게 된다.Therefore, in order to prevent mechanical property deterioration at the welded area, an effort has been made to minimize the heat affected area by performing friction welding, and this friction welding process requires expensive equipment to match the phase difference between the two members. This would result in a cost burden.

이에 본 발명은 상기와 같은 점을 감안하여 안출된 것으로, 알루미늄재의 경량부재로 이루어지는 원피스 타입의 추진축에서 튜브부와 요크부 사이의 접합을 금속접착제을 이용함으로써, 용접부위에서의 접합강도를 향상시킬 수 있을 뿐만 아니라, 그에 따른 부재의 내구성능도 보장할 수 있도록 하는 자동차의 추진축을 제공하는 데 그 목적이 있다.Accordingly, the present invention has been made in view of the above, and by using a metal adhesive for joining the tube portion and the yoke portion in a one-piece type propulsion shaft made of a lightweight member made of aluminum, it is possible to improve the bonding strength at the welded portion. In addition, it is an object of the present invention to provide a propulsion shaft of a vehicle that can ensure the durability of the member accordingly.

상기와 같은 목적을 달성하기 위한 본 발명은, 알루미늄재의 경량부재로 이루어진 튜브부와, 이 튜브부의 전/후방측 선단에 각각 결합되는 요크부의 접합부위가 금속접착제를 매개로 한 접합공정을 통해 결합되되, 상기 튜브부에는 금속접착제의 주입을 위한 관통구멍이 형성되고, 상기 요크부에는 접착층의 형성을 위해 전둘레를 따라 오목하게 형성된 절개홈이 형성된 것을 특징으로 한다.The present invention for achieving the above object, the tube portion made of a lightweight member of the aluminum material, and the joint portion of the yoke portion coupled to the front and rear ends of the tube portion, respectively, through the bonding process via a metal adhesive agent Wherein, the tube portion is formed with a through hole for the injection of the metal adhesive, characterized in that the yoke portion is formed with a recess formed along the entire circumference to form the adhesive layer.

도 1은 종래 자동차의 투피스 타입 추진축을 도시한 상태도.1 is a state diagram showing a two-piece type propulsion shaft of a conventional vehicle.

도 2는 종래 자동차의 원피스 타입 추진축을 도시한 상태도.Figure 2 is a state diagram showing a one-piece type propulsion shaft of a conventional vehicle.

도 3은 도 2의 요크부와 튜브부 사이의 결합부위를 부분적으로 도시한 단면도.3 is a cross-sectional view partially showing a coupling portion between the yoke portion and the tube portion of FIG.

도 4는 본 발명에 따른 추진축에서 요크부와 튜브부 사이의 결합부위를 도시한 단면도.4 is a cross-sectional view showing a coupling portion between the yoke portion and the tube portion in the propulsion shaft according to the present invention.

도 5는 도 4에 도시된 "가"부위인 요크부와 튜브부 사이의 결합과정을 도시한 단면도.FIG. 5 is a cross-sectional view illustrating a coupling process between the yoke portion and the tube portion, which are the “ga” portions shown in FIG. 4.

< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>

20-튜브부20a-관통구멍20-tube section 20a- through hole

22-요크부22a-절개홈22-yoke section 22a-incision groove

G-주입용 기구L-접착층G-injection mechanism L-adhesive layer

M-금속접착제M-metal adhesive

이하 본 발명의 실시예를 첨부된 예시도면을 참조로 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 4는 본 발명에 따른 추진축에서 요크부와 튜브부 사이의 결합부위를 도시한 단면도이고, 도 5는 도 4에 도시된 "가"부위인 요크부와 튜브부 사이의 결합과정을 도시한 단면도인 바, 종래 원피스 타입의 추진축을 도시한 도 2 내지 도 3에서와 동일한 참조부위에는 동일한 참조부호를 병기하기로 한다.Figure 4 is a cross-sectional view showing a coupling portion between the yoke portion and the tube portion in the propulsion shaft according to the present invention, Figure 5 is a cross-sectional view showing a coupling process between the yoke portion and the tube portion is a "ga" portion shown in FIG. In other words, the same reference numerals are denoted together with the same reference numerals as in FIGS. 2 to 3 showing the conventional one-piece type propulsion shaft.

본 발명에 따른 원피스 타입의 추진축은 도면에 도시된 바와 같이, 알루미늄재의 경량부재로 이루어진 튜브부(20)와, 이 튜브부(20)의 전/후방측 선단에 각각 결합되어 축이음부재와의 연결을 위한 요크부(22)로 이루어진다.As shown in the drawing, the propulsion shaft of the one-piece type according to the present invention is coupled to the tube portion 20 made of a lightweight member made of aluminum, and to the front / rear end of the tube portion 20, It is made of a yoke portion 22 for the connection.

여기서, 상기 튜브부(20)와 요크부(22) 사이의 접합은 금속접착제(M)를 이용하여 이루어지는 바, 이 금속접착제(M)는 도 5에 도시된 바와 같이 주입용 기구(G)를 매개로 상기 튜브부(20)와 요크부(22) 사이의 결합부위로 주입되어진다.Here, the joint between the tube portion 20 and the yoke portion 22 is made by using a metal adhesive (M), the metal adhesive (M) as shown in Figure 5 the injection mechanism (G) It is injected into the coupling portion between the tube portion 20 and the yoke portion 22 as a medium.

이를 위해, 상기 튜브부(20)의 선단에는 금속접착제(M)의 주입을 위한 관통구멍(20a)이 형성되고, 이 관통구멍(20a)에 대응되는 부위로 상기 요크부(22)의 전둘레에는 오목하게 파인 절개홈(22a)이 각각 형성되어 있다.To this end, a through hole 20a for injecting the metal adhesive M is formed at the tip of the tube part 20, and the front circumference of the yoke part 22 is a portion corresponding to the through hole 20a. Recessed cutouts 22a are formed in the recesses, respectively.

따라서, 상기 원피스 타입의 추진축에서 상기 튜브부(20)와 요크부(22)는 튜브부(20)의 내부로 요크부(22)가 삽입된 다음, 상기 튜브부(20)에 형성된 관통구멍(20a)으로 주입용 기구(G)를 이용한 금속접착제(M)가 주입되면, 주입되는 금속접착제(M)는 상기 관통구멍(20a)을 통해 요크부(22)의 외주면에 형성된 절개홈(22a)내로 주입되어진다.Therefore, the yoke portion 22 is inserted into the tube portion 20 and the yoke portion 22 in the one-piece type propulsion shaft, and then the through hole formed in the tube portion 20 ( When the metal adhesive (M) using the injection mechanism (G) is injected into 20a, the metal adhesive (M) to be injected is formed in the cutout (22a) formed on the outer circumferential surface of the yoke portion (22) through the through hole (20a). Is injected into.

이때, 상기 요크부(22)의 절개홈(22a)을 가득 채운 잉여의 금속접착제(M)는상기 튜브부(20)의 내주면과 상기 요크부(22)의 외주면 사이의 틈새로 스며들어 접착층(L)을 형성하게 된다.At this time, the excess metal adhesive (M) filling the cutting groove (22a) of the yoke portion 22 penetrates into a gap between the inner circumferential surface of the tube portion 20 and the outer circumferential surface of the yoke portion 22, the adhesive layer ( L) is formed.

이와 같이, 원피스 타입의 추진축에서 상기 튜브부(20)와 요크부(22)가 금속접착제(M)를 매개로 접합되는 경우에 있어, 상기 추진축의 접합부위에 대한 접합강도는 상기 튜브부(20)와 요크부(22) 사이로 도포되는 금속접착제(M)의 접착 표면적에 비례하게 되므로, 상기 튜브부(20)내로 삽입되는 요크부(22)의 길이를 연장하게 되면, 상기 튜브부(20)와 요크부(22) 사이의 접합강도는 보다 더 강화될 수 있게 된다.As such, when the tube part 20 and the yoke part 22 are joined to each other via the metal adhesive M in the one-piece type propulsion shaft, the bonding strength of the propulsion shaft to the joint portion is the tube part 20. Since it is proportional to the adhesive surface area of the metal adhesive (M) applied between the and the yoke portion 22, if the length of the yoke portion 22 is inserted into the tube portion 20, the tube portion 20 and Bonding strength between the yoke portions 22 can be further enhanced.

또한, 상기와 같이 금속접착제(M)를 매개로 한 추진축의 제조는 종래와 같이 상기 튜브부(20)와 요크부(22)에 대한 용접을 통해 제조하는 추진축에 비해 용접열영향부에 의한 축강성의 저하와 같은 용접부위에서의 기계적 물성의 저하를 방지할 수 있게 된다.In addition, the manufacture of the propulsion shaft through the metal adhesive (M) as described above is the shaft by the welding heat affected zone compared to the propulsion shaft manufactured by welding the tube portion 20 and the yoke portion 22 as in the prior art. It is possible to prevent the deterioration of mechanical properties at the welded portion, such as the deterioration of rigidity.

이상 설명한 바와 같이 본 발명에 따른 자동차의 추진축에 의하면, 알루미늄재의 경량부재로 이루어지는 추진축에서 튜브부(20)와 요크부(22) 사이의 접합부위를 금속접착제(M)를 매개로 하여 접합시킴에 따라 용접에 따른 접합부위의 물성저하와 같은 폐단점을 배제할 수 있음은 물론, 공정시간의 단축을 통해 생산성을 향상시킬 수 있게 된다.As described above, according to the propulsion shaft of the automobile according to the present invention, the joint between the tube portion 20 and the yoke portion 22 in the propulsion shaft made of a lightweight member made of aluminum is joined to each other via the metal adhesive M. Accordingly, it is possible to exclude closed points such as deterioration of the physical properties of the joints due to welding, as well as to improve productivity through shortening of the process time.

Claims (2)

알루미늄재의 경량부재로 이루어진 튜브부(20)와, 이 튜브부(20)의 전/후방측 선단에 각각 결합되는 요크부(22)의 접합부위가 금속접착제(M)를 매개로 한 접합공정을 통해 결합되는 것을 특징으로 하는 자동차의 추진축.The joining process of the tube part 20 which consists of a lightweight member of aluminum material, and the yoke part 22 which respectively couples to the front / rear side front end of this tube part 20 through the metal adhesive M is carried out. Propulsion shaft of the vehicle, characterized in that coupled through. 제 1 항에 있어서,The method of claim 1, 상기 튜브부(20)에는 금속접착제(M)의 주입을 위한 관통구멍(20a)이 형성되고, 상기 요크부(22)에는 접착층(L)의 형성을 위해 전둘레를 따라 오목하게 형성된 절개홈(22a)이 형성된 것을 특징으로 하는 자동차의 추진축.The tube portion 20 is formed with a through hole 20a for injecting the metal adhesive M, and the yoke portion 22 is formed with a recess formed along the entire circumference to form the adhesive layer L. 22a) is the propulsion shaft of the vehicle, characterized in that formed.
KR1020010058997A 2001-09-24 2001-09-24 Propeller shaft for automotive vehicle KR20030026021A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0449220U (en) * 1990-08-31 1992-04-27
JPH0530533U (en) * 1991-07-26 1993-04-23 株式会社アツギユニシア Propeller yaft
JPH06109015A (en) * 1992-09-28 1994-04-19 Toyota Motor Corp Drive shaft made of composite-material
KR950033138A (en) * 1994-05-31 1995-12-22 수우 에이 그리핀 Drive side assembly and its manufacturing method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0449220U (en) * 1990-08-31 1992-04-27
JPH0530533U (en) * 1991-07-26 1993-04-23 株式会社アツギユニシア Propeller yaft
JPH06109015A (en) * 1992-09-28 1994-04-19 Toyota Motor Corp Drive shaft made of composite-material
KR950033138A (en) * 1994-05-31 1995-12-22 수우 에이 그리핀 Drive side assembly and its manufacturing method

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