KR20120045165A - Structure of subframe for vehicle - Google Patents

Structure of subframe for vehicle Download PDF

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KR20120045165A
KR20120045165A KR1020100106532A KR20100106532A KR20120045165A KR 20120045165 A KR20120045165 A KR 20120045165A KR 1020100106532 A KR1020100106532 A KR 1020100106532A KR 20100106532 A KR20100106532 A KR 20100106532A KR 20120045165 A KR20120045165 A KR 20120045165A
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South Korea
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panel
upper panel
hole
subframe
lower panel
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KR101624235B1 (en
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이후광
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현대자동차주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/001—Suspension arms, e.g. constructional features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

본 발명은 차량용 서브프레임에 관한 것으로, 상측패널과 하측패널이 결합되어 형성되되, 상측패널과 하측패널 사이에서 로워암이 결합되는 차량용 서브프레임의 구조에 있어서, 상기 로워암을 관통하여 일측 끝단은 상측패널에 고정되고 타측 끝단은 하측패널에 고정되는 보강볼트를 포함하여 구성된 것을 특징으로 한다.
상기 보강볼트는, 바(bar) 형상으로 상단에는 외주면에 수나사산이 형성된 고정부가 돌출형성되고 하단에는 내주면에 암나사산이 형성된 나사홀이 형성되되, 상기 하측패널에 타공된 제2관통홀로 삽입되어 로워암의 장착홀을 관통하고 상측패널에 타공된 제1관통홀 위로 고정부가 돌출되도록 삽입되면, 상기 고정부에는 고정너트가 나사결합되고 나사홀에 고정볼트가 나사결합된다.The present invention relates to a vehicle subframe, wherein the upper panel and the lower panel are coupled to each other, and in the structure of the vehicle subframe in which the lower arm is coupled between the upper panel and the lower panel, one end penetrates through the lower arm. It is fixed to the upper panel and the other end is characterized in that it comprises a reinforcing bolt fixed to the lower panel.
The reinforcing bolt is a bar (bar) in the top of the male thread formed on the outer circumferential surface protruding and the screw hole is formed on the inner circumferential surface formed on the inner circumferential surface is inserted into the second through-hole perforated in the lower panel When the fixing part is inserted to protrude through the mounting hole of the arm and the first through hole perforated in the upper panel, the fixing nut is screwed to the fixing part and the fixing bolt is screwed to the screw hole.

Description

차량용 서브프레임의 구조{Structure of subframe for vehicle}Structure of subframe for vehicle

본 발명은 차량용 서브프레임의 구조에 관한 것으로 더욱 상세하게는 보강볼트를 부설하여 강성을 증대시킨 차량용 서브프레임의 보강 구조에 관한 것이다.
The present invention relates to a structure of a vehicle subframe, and more particularly, to a structure of a vehicle subframe in which rigidity is increased by laying a reinforcing bolt.

승용차량들은 프레임바디를 대신하여 중량이 가볍고 생산성이 뛰어난 모노코크바디가 주로 사용된다. 모노코크바디는 별도의 프레임이 삭제된 구조로서 차체에 엔진을 포함한 파워트레인이 직접 장착된다. Passenger cars use monocoque bodies that are light in weight and highly productive instead of frame bodies. The monocoque body is a structure in which a separate frame is removed, and a power train including an engine is directly mounted on the body.

따라서, 상기 모노코크바디는 차체 자체가 프레임 기능을 하여 서스펜션 및 섀시 부품들이 각각 장착되나, (엔진과 트랜스미션 및 디퍼렌셜기어가 통합적으로 결합되어 구성된) 파워트레인의 진동이 직접적으로 차체에 전달되는 것을 방지하며 차량 충돌시 충격을 분산하기 위하여 차량의 하부에 서브프레임(subframe)이 장착된다.Therefore, the monocoque body functions as a frame itself, and the suspension and chassis components are mounted, respectively, but the vibration of the power train (integrated with the engine, the transmission and the differential gear) is prevented from being transmitted directly to the vehicle body. Subframes are mounted on the lower part of the vehicle to disperse the impact when the vehicle crashes.

상기 서브프레임은 서스팬션 스트럿(strut) 및 너클 등과 같은 조향장치 및 현가장치 등이 연결될 수 있도록 차체 하부에 장착된다. 그리고, 상기 서브프레임은 일반적으로 "#"자 형과 "I" 자 형으로 제조된다. The subframe is mounted under the vehicle body so that steering devices such as suspension struts and knuckles and suspension devices can be connected. In addition, the subframe is generally manufactured in a "#" shape and a "I" shape.

"#" 자 형 서브프레임은 일반적으로 토크가 큰 엔진이 장착될 때 적용되며 4 곳(4점식 마운트 방식)에서 마운팅부재들(두 개의 롤로드와 하나의 엔진마운트 및 하나의 트랜스미션마운트)과 함께 파워트레인을 지지하고, "I" 자 형 서브프레임은 일반적으로 토크가 작은 엔진이 장착될 때 적용되며 3 곳(3점식 마운트 방식)에서 마운팅부재들(하나의 롤로드와 하나의 엔진마운트 및 하나의 트랜스미션마운트)과 함께 파워트레인을 지지한다. "#" Shaped subframes are generally applied when high torque engines are fitted and with four mounting elements (two roll rods, one engine mount and one transmission mount) in four locations (four point mount). Supporting the powertrain, the "I" shaped subframe is generally applied when a low torque engine is mounted and the mounting elements (one roll rod and one engine mount and one in three places) Support the powertrain with the transmission mount.

이 중, ("H" 자 형이라고도 불리는) "I" 자형 서브프레임은 도 1a 에 도시된 바와 같은 형상을 갖는다. 상기 서브프레임은 두 개의 (또는 그 이상의) 패널들이 테두리를 따라 접합되어 결합된 구조로서 양측이 차체의 엔진룸 하부에서 차량의 사이드멤버에 고정되도록, 로워암이 결합된다. 즉, 상기 로워암은 상측패널과 하측패널 사이에 공간을 형성함으로서 마련된 마운트장착부에 부분적으로 삽입되고 볼팅(또는 리벳팅)으로 결합되는 구조이다. Among these, the "I" shaped subframe (also called "H" shaped) has a shape as shown in Fig. 1A. The subframe is a structure in which two (or more) panels are joined and joined along an edge thereof, and a lower arm is coupled so that both sides are fixed to a side member of the vehicle under the engine compartment of the vehicle body. That is, the lower arm is partially inserted into the mount mounting portion formed by forming a space between the upper panel and the lower panel, and is coupled to the bolting (or riveting).

상기 로워암은 서브프레임에 가해지는 진동이 차체에 직접적으로 전달되지 않도록 볼팅되는 부분에 고무재질의 마운트부시1과 마운트부시2가 각각 장착되어 결합된다.
The lower arm is mounted with a rubber mount bush 1 and a mount bush 2 respectively coupled to the bolted portion so that the vibration applied to the subframe is not directly transmitted to the vehicle body.

한편, 도 1b 에 도시된 바와 같이, 로워암의 장착을 위해 상측패널과 하측패널은 사이에는 소정의 공간(마운트장착부)이 형성된다.On the other hand, as shown in Figure 1b, a predetermined space (mount mounting portion) is formed between the upper panel and the lower panel for mounting the lower arm.

즉, 마운트부시1이 장착되는 부분은 상측패널과 하측패널 사이가 간격을 두고 개구된 구조를 가짐으로, 본 발명은 이러한 개구된 부분의 내구강도 증대 및 강성을 더욱 보강할 수 있는 차량용 서브프레임의 구조를 제공하는 것에 주목적이 있다.
That is, since the portion on which the mount bush 1 is mounted has an open structure at intervals between the upper panel and the lower panel, the present invention provides a vehicle subframe that can further enhance the oral resistance and rigidity of the opened portion. The primary purpose is to provide a structure.

상기와 같은 목적을 달성하기 위한 본 발명은, 상측패널과 하측패널이 결합되어 형성되되, 상측패널과 하측패널 사이에서 로워암이 결합되는 차량용 서브프레임의 구조에 있어서, 상기 로워암을 관통하여 일측 끝단은 상측패널에 고정되고 타측 끝단은 하측패널에 고정되는 보강볼트를 포함하여 구성된 것을 특징으로 한다.The present invention for achieving the above object, the upper panel and the lower panel is formed by coupling, in the structure of the vehicle subframe that the lower arm is coupled between the upper panel and the lower panel, one side through the lower arm The end is fixed to the upper panel and the other end is characterized in that it comprises a reinforcing bolt fixed to the lower panel.

상기 보강볼트는, 바(bar) 형상으로 상단에는 외주면에 수나사산이 형성된 고정부가 돌출형성되고 하단에는 내주면에 암나사산이 형성된 나사홀이 형성되되, 상기 하측패널에 타공된 제2관통홀로 삽입되어 로워암의 장착홀을 관통하고 상측패널에 타공된 제1관통홀 위로 고정부가 돌출되도록 삽입되면, 상기 고정부에는 고정너트가 나사결합되고 나사홀에 고정볼트가 나사결합된다.The reinforcing bolt is a bar (bar) in the top of the male thread formed on the outer circumferential surface protruding and the screw hole is formed on the inner circumferential surface formed on the inner circumferential surface is inserted into the second through-hole perforated in the lower panel When the fixing part is inserted to protrude through the mounting hole of the arm and the first through hole perforated in the upper panel, the fixing nut is screwed to the fixing part and the fixing bolt is screwed to the screw hole.

그리고, 외경이 제2관통홀 보다 더 크게 형성되고 상기 보강볼트와 하측패널 사이에 끼워지는 와셔를 더 포함하여 구성된다.And, the outer diameter is formed to be larger than the second through hole is configured to further include a washer fitted between the reinforcing bolt and the lower panel.

상기 고정너트는 조립시 편의성을 높이기 위해 상측패널에 용접으로 접합된 것이 바람직하다.The fixing nut is preferably welded to the upper panel in order to increase convenience during assembly.

또한 상기 보강볼트는 상측패널이 안착될 수 있도록 제1관통홀의 내경보다 외경이 더 크게 형성된다.
In addition, the reinforcing bolt has an outer diameter larger than the inner diameter of the first through hole so that the upper panel can be seated.

상기와 같은 구성의 본 발명은, 상측패널과 하측패널 사이에 보강볼트를 부설하여 서브프레임의 강성 취약 부분의 내구강도를 향상시킬 수 있는 효과가 있다.The present invention of the above configuration, there is an effect that can improve the oral cavity of the rigid fragile portion of the sub-frame by laying a reinforcing bolt between the upper panel and the lower panel.

그리고, 고정너트는 상측패널에 용접(weld)되어 보강볼트의 장착시 편의성을 높이는 효과가 있으며, 상측패널이 보강볼트에 거치되는 구조로서 서브프레임의 전체적인 강성을 향상시키는 효과가 있다.
In addition, the fixing nut is welded to the upper panel to increase the convenience of mounting the reinforcing bolt, and the upper panel is mounted on the reinforcing bolt to improve the overall rigidity of the subframe.

도 1a 는 종래의 서브프레임에 로워함이 결합되기 전의 모습과 결합된 후의 모습을 도시한 사시도,
도 1b 는 종래의 서브프레임의 구조 중 내구강도가 취약한 부분을 도시한 평면도 및 저면도,
도 2 는 본 발명의 바람직한 실시예에 따라 보강볼트가 장착된 서브프레임의 모습을 도시한 사시도,
도 3 은 본 발명의 바람직한 실시예에 따라 보강볼트가 장착된 서브프레임의 하부 모습을 도시한 사시도,
도 4 는 본 발명의 바람직한 실시예에 따라 보강볼트가 장착되는 모습을 도시한 단면도.Figure 1a is a perspective view showing a state after being combined with the state before the lower is coupled to a conventional subframe,
1B is a plan view and a bottom view showing a portion of the conventional sub-frame weakness of the oral cavity,
Figure 2 is a perspective view showing the appearance of the sub-frame is mounted reinforcement bolts in accordance with a preferred embodiment of the present invention,
Figure 3 is a perspective view showing a lower view of the sub-frame is mounted reinforcement bolts in accordance with a preferred embodiment of the present invention,
Figure 4 is a cross-sectional view showing a state in which the reinforcing bolt is mounted in accordance with a preferred embodiment of the present invention.

이하, 도면을 참조하여 본 발명의 바람직한 실시예에 따른 차량용 서브프레임의 구조를 더욱 상세히 설명한다.Hereinafter, a structure of a vehicle subframe according to a preferred embodiment of the present invention will be described in detail with reference to the drawings.

전술한 바와 같이, 본 발명의 서브프레임은 상측패널(110)과 하측패널(120)이 테두리가 접합되어 형성되되, 양측은 부분적으로 개구되어 로워암(130)의 일측이 삽입되어 장착된다. 상기 로워암(130)은 마운트부시들이 장착되어 상측패널(110)과 하측패널(120) 사이에 삽입되면 볼팅(또는 리벳팅)으로 장착된다. 도 2 와 도 3 에 도시된 바와 같이, 본 발명에 따른 서브프레임 구조는 상기 로워암(130)을 관통하여 일측 끝단은 상측패널(110)에 고정되고 타측 끝단은 하측패널(120)에 고정되는 보강볼트(10)가 추가적으로 장착되는 구조이다.As described above, in the subframe of the present invention, the upper panel 110 and the lower panel 120 are formed by joining edges, and both sides thereof are partially opened so that one side of the lower arm 130 is inserted into the subframe. The lower arm 130 is mounted by bolting (or riveting) when the mount bushes are mounted and inserted between the upper panel 110 and the lower panel 120. As shown in Figure 2 and 3, the subframe structure according to the present invention penetrates through the lower arm 130, one end is fixed to the upper panel 110 and the other end is fixed to the lower panel 120 The reinforcement bolt 10 is additionally mounted.

상기 보강볼트(10)는 로워암(130)에 미리 타공된 장착홀(131)을 관통하여 양끝단은 각각 상측패널(110)과 하측패널(120)에 고정된다. 상기 장착홀(131)은, 마운트부시들의 탄성변형시 보강볼트(10)와 (충돌 또는 긁힘 등과 같은)간섭을 발생시키지 않도록 보강볼트(10)의 직경보다 내경이 더 크게 형성된다. The reinforcing bolt 10 penetrates the mounting hole 131 pre-drilled in the lower arm 130, and both ends thereof are fixed to the upper panel 110 and the lower panel 120, respectively. The mounting hole 131 has a larger inner diameter than the diameter of the reinforcing bolt 10 so as not to cause interference (such as collision or scratching) with the reinforcing bolt 10 during elastic deformation of the mount bushings.

상기 보강볼트(10)의 모습과 장착되는 모습은 도 4 에 도시되었다. 상기 보강볼트(10)는 상측패널(110)에 가해지는 하중이 하측패널(120)로 분산될 수 있도록 상측패널(110)이 안착도록 장착된다. 즉, 상기 보강볼트(10)는 소정의 직경을 갖는 바(bar) 형상(바람직하게는 원통형 형상)이되, 상단에는 외주면에 수나사산이 형성된 고정부(11)가 돌출형성되고 하단에는 내주면에 암나사산이 형성된 나사홀(12)이 형성된다.(도 4 에서 경사선으로 표시된 부분은 단면을 나타냄) 그리고, 상기 고정부(11)가 상측패널(110)의 제1관통홀 상단에 용접된 고정너트(20)에 나사결합됐을 때, 상측패널(110)과 하측패널(120) 내부에 위치할 수 있을 정도의 길이를 갖는다.The appearance and mounting state of the reinforcing bolt 10 is shown in FIG. The reinforcing bolt 10 is mounted so that the upper panel 110 is seated so that the load applied to the upper panel 110 can be distributed to the lower panel 120. That is, the reinforcing bolt 10 is a bar shape (preferably cylindrical shape) having a predetermined diameter, the upper end of the fixing portion 11 is formed with a male thread formed on the outer peripheral surface protruding and the lower end of the internal thread A screw hole 12 having a peak is formed. (The portion indicated by the inclined line in FIG. 4 shows a cross section) And the fixing nut 11 is welded to the upper end of the first through hole of the upper panel 110. When screwed to (20), it has a length enough to be located inside the upper panel 110 and the lower panel 120.

상기 상측패널(110)에는 고정부(11)가 삽입될 수 있도록 제1관통홀이 형성되고 하측패널에는 보강볼트(10)가 진입될 수 있도록 제2관통홀에 형성된다. 따라서, 상기 제2관통홀은 보강볼트(10)의 외경 보다 더 큰 내경을 가지며, 제1관통홀은 고정부(11)만 삽입될 수 있을 정도의 내경을 갖는다. A first through hole is formed in the upper panel 110 so that the fixing part 11 can be inserted, and a second through hole is formed in the lower panel so that the reinforcing bolt 10 can enter. Therefore, the second through hole has an inner diameter larger than the outer diameter of the reinforcing bolt 10, and the first through hole has an inner diameter such that only the fixing portion 11 can be inserted therein.

한편, 상측패널(110)과 하측패널(120) 사이로 로워암(130)이 미리 장착되고 제1관통홀과 장착홀(131) 및 제2관통홀이 정렬된 상태에서 보강볼트(10)는 제2관통홀을 통해 삽입된다. Meanwhile, the reinforcing bolt 10 is formed between the upper panel 110 and the lower panel 120 in a state in which the lower arm 130 is mounted in advance and the first through hole, the mounting hole 131, and the second through hole are aligned. 2 It is inserted through the through hole.

삽입된 보강볼트(10)는 고정너트(20)에 나사결합하여 고정되고, 보강볼트(10) 아래로는 고정볼트(40)가 나사홀(12)에 나사결합된다. 이때, (제2관통홀에서 이탈하지 않고 하부패널에 고정되도록) 상기 고정볼트(40)의 헤드부는 제2관통홀의 내경보다 직경이 크게 형성되며, 하부패널(120)과 보강볼트(10) 사이에는 와셔(30)가 삽입된 상태로 나사결합된다. 마찬가지로, 상기 와셔(30)는 외경이 제2관통홀 보다 더 크게 형성되되 보강볼트(10)의 길이에 따라 그 두께가 달라진다.Inserted reinforcement bolt 10 is fixed by screwing to the fixing nut 20, the fixing bolt 40 is screwed into the screw hole (12) below the reinforcing bolt (10). At this time, the head portion of the fixing bolt 40 is formed to have a larger diameter than the inner diameter of the second through hole (to be fixed to the lower panel without leaving the second through hole), between the lower panel 120 and the reinforcing bolt 10 The washer 30 is screwed in the inserted state. Similarly, the washer 30 has an outer diameter larger than that of the second through hole, but its thickness varies depending on the length of the reinforcing bolt 10.

상기와 같은 보강볼트는 한 지점이 아니라 서브프레임의 크기 및 형상에 따라 여러 지점에 장착되어, 내구강도가 취약한 지점을 보강할 수 있다. The reinforcing bolt as described above may be mounted at various points according to the size and shape of the subframe instead of one point, thereby reinforcing a weak point of oral resistance.

이상과 같이 본 명세서와 도면에 개시된 실시예들은 본 발명의 이해를 돕기 위해 특정 예를 제시한 것에 지나지 않으며, 본 발명의 범위를 제한하고자 하는 것은 아니다. 여기에 개시된 실시예들 이외에도 본 발명의 기술적 사상에 바탕을 둔 다른 변형예들이 실시 가능하다는 것은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 자명한 것이다.
As described above, the embodiments disclosed in the specification and the drawings are only presented as specific examples to aid the understanding of the present invention, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

10 : 보강볼트
20 : 고정너트
30 : 와셔
40 : 고정볼트
110 : 상측패널
120 : 하측패널
130 : 로워암10: reinforcement bolt
20: fixing nut
30: washer
40: fixing bolt
110: upper panel
120: lower panel
130: lower arm

Claims (4)

상측패널과 하측패널이 결합되어 형성되되, 상측패널과 하측패널 사이에서 로워암이 결합되는 차량용 서브프레임의 구조에 있어서,
상기 로워암을 관통하여 일측 끝단은 상측패널에 고정되고 타측 끝단은 하측패널에 고정되는 보강볼트를 포함하여 구성된 것을 특징으로 하는 차량용 서브프레임의 구조.
In the structure of the subframe for the vehicle is formed by combining the upper panel and the lower panel, the lower arm is coupled between the upper panel and the lower panel,
A structure of a vehicle subframe, comprising a reinforcing bolt penetrating through the lower arm and having one end fixed to the upper panel and the other end fixed to the lower panel.
제 1 항에 있어서, 상기 보강볼트는, 바(bar) 형상으로 상단에는 외주면에 수나사산이 형성된 고정부가 돌출형성되고 하단에는 내주면에 암나사산이 형성된 나사홀이 형성되되, 상기 하측패널에 타공된 제2관통홀로 삽입되어 로워암의 장착홀을 관통하고 상측패널에 타공된 제1관통홀 위로 고정부가 돌출되도록 삽입되면, 상기 고정부에는 고정너트가 나사결합되고 나사홀에 고정볼트가 나사결합되는 것을 특징으로 하는 차량용 서브프레임의 구조.
The method of claim 1, wherein the reinforcing bolt is a bar (bar) in the top of the male thread formed on the outer circumferential surface protruding and the screw hole is formed on the inner circumferential surface formed on the inner peripheral surface is formed in the lower panel 2 is inserted into the through hole to penetrate the mounting hole of the lower arm and the fixing part is protruded over the first through hole perforated in the upper panel, the fixing nut is screwed into the fixing part and the fixing bolt is screwed into the screw hole. The structure of the vehicle subframe characterized in that.
제 2 항에 있어서, 외경이 제2관통홀 보다 더 크게 형성되고 상기 보강볼트와 하측패널 사이에 끼워지는 와셔를 더 포함하여 구성되는 것을 특징으로 하는 차량용 서브프레임의 구조.
3. The structure of a vehicle subframe according to claim 2, further comprising a washer having an outer diameter larger than the second through hole and fitted between the reinforcing bolt and the lower panel.
제 2 항 또는 제 3 항에 있어서, 상기 고정너트는 상측패널에 접합된 것을 특징으로 하는 차량용 서브프레임의 구조.
4. The structure of a vehicle subframe according to claim 2 or 3, wherein the fixing nut is bonded to the upper panel.
KR1020100106532A 2010-10-29 2010-10-29 Structure of subframe for vehicle Expired - Fee Related KR101624235B1 (en)

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