IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0159443
(2002-05-31)
|
발명자
/ 주소 |
- Dennert, Robert L.
- Dennert, R. Bruce
- Lohr, Paul
- Hamann, Michael W.
|
출원인 / 주소 |
- Harley-Davidson Motor Company Group, Inc.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
21 인용 특허 :
11 |
초록
▼
A motorcycle frame including a base portion and a removable portion that both bear operating loads of the motorcycle. The removable portion and base portion are fastened together at a joint comprising a first end cap having a protrusion, a second end cap having a recess, and a fastener having a fast
A motorcycle frame including a base portion and a removable portion that both bear operating loads of the motorcycle. The removable portion and base portion are fastened together at a joint comprising a first end cap having a protrusion, a second end cap having a recess, and a fastener having a fastener axis and extending through the first and second end caps. The protrusion and the recess are characterized by angled walls oriented at an acute angle with respect to the fastener axis. The angled wall engagement of the end caps ensures that substantially all shear loads in the joint are born by the end caps and not by the fastener. The motorcycle footpeg position can be changed by replacing the removable portion with a second removable portion having footpeg mounting structure at a different location than the removable portion.
대표청구항
▼
1. A method for relocating the position of a footpeg on a motorcycle frame having a base portion and a first removable portion removably mounted to the base portion at a joint, the base and first removable portions supporting and bearing loads created during motorcycle and engine operation, the foot
1. A method for relocating the position of a footpeg on a motorcycle frame having a base portion and a first removable portion removably mounted to the base portion at a joint, the base and first removable portions supporting and bearing loads created during motorcycle and engine operation, the footpeg being mounted to footpeg mounting structure on the first removable portion and being positioned in a first footpeg position, the method comprising:removing the first removable portion from the base portion; providing a second removable portion that is removably mountable to the base portion at the joint and includes footpeg mounting structure at a second footpeg position different from the first footpeg position; mounting the second removable portion to the base portion in place of the first removable portion; and interconnecting a footpeg to the footpeg mounting structure on the second removable portion. 2. The method of claim 1, wherein the joint is defined by a free end of the base portion and a mating end of the second removable portion, wherein one of the free end and the mating end includes a male profile and the other of the free end and the mating end includes a female profile, and wherein the act of mounting the second removable portion to the base portion includes mating the male and female profiles.3. The method of claim 2, wherein the male profile snugly fits within the female profile, and wherein the act of mounting the second removable portion to the base portion includes extending a fastener through the joint.4. The method of claim 3, further comprising applying loads to the joint during operation of the motorcycle and using he snug fit between the male and female profiles to reduce shear stress on the fastener caused by such loads on the joint.5. The method of claim 1, wherein the act of removing includes decoupling the removable portion from the engine.6. The method of claim 1, wherein the frame resiliently supports an engine and drive train assembly and the motorcycle includes a tie-rod interconnecting the engine and drive train assembly and the first removable portion, wherein the act of removing includes disconnecting the tie-rod from the first removable portion, and wherein the act of mounting includes connecting the tie-rod to the second removable portion.7. A motorcycle frame for supporting a motorcycle engine, the frame comprising:a base portion having a free end including first angled walls; a removable portion having a mating end including second angled walls, said first and second angled walls mating with each other to define a joint when said removable portion is mounted to said base portion; a fastener extending through said joint; a resilient mount that resiliently interconnects the motorcycle engine and the frame; and a tie-rod interconnecting the motorcycle engine and the removable portion, wherein the tie-rod transmits loads from the engine to the removable portion, wherein both of said base and removable portions include engine mounting structure for mounting an engine thereto, said base and removable portions being adapted to bear loads caused by operation of the motorcycle, and wherein said mating angled walls bear substantially all shear stresses transmitted through said joint such that said fastener is exposed to substantially no shear stress. 8. A motorcycle frame for supporting a motorcycle engine, the frame comprising:a base portion having a free end including first angled walls; a removable portion having a mating end including second angled walls, said first and second angled walls mating with each other to define a joint when said removable portion is mounted to said base portion; and a fastener extending through said joint; wherein both of said base and removable portions include engine mounting structure for mounting an engine thereto, said base and removable portions being adapted to bear loads caused by operation of the motorcycle, and wherein said mating angled walls bear substantially all shear stresses transmitted through said joint such that said fastener is exposed to substantially no shear stress, wherein said removable portion includes a central axis, and wherein said first and second angled walls extend in a direction that is substantially parallel to said central axis. 9. The motorcycle frame of claim 8, wherein said fastener extends through said joint along a fastener axis, and wherein said first and second angled walls are at an acute angle with respect to said fastener axis, said angled walls snugly fitting together and in intimate contact with each other.10. The motorcycle frame of claim 9, wherein said acute angle is about 45°.11. The motorcycle frame of claim 8, wherein said free end of said base portion and said mating end of said removable portion each include a hollow tubular end and an end cap welded to said hollow tubular end, and wherein said first and second angled walls are defined by said end caps.12. The motorcycle frame of claim 11, wherein said end caps include reduced diameter ends received within said hollow tubular ends.13. The motorcycle frame of claim 8, wherein said removable portion includes footpeg mounting structure at a first fixed position on said removable portion, said motorcycle further comprising a footpeg mounted to said footpeg mounting structure.14. The motorcycle frame of claim 13, further comprising a second removable portion including footpeg mounting structure at a second fixed position different from said first fixed position to enable the footpeg to be moved to said second position by replacing said removable portion with said second removable portion and mounting said footpeg to said mounting structure on said second removable portion.15. The motorcycle frame of claim 8, further comprising a resilient mount that resiliently interconnects the motorcycle engine and the frame, and a tie-rod interconnecting the motorcycle engine and the removable portion, wherein the tie-rod transmits loads from the engine to the removable portion.16. The motorcycle frame of claim 15, wherein the tie-rod is pivotally coupled to the engine and the removable portion.17. A removable portion of a motorcycle frame comprisingat least one mating end having one of a male and female surface having at least two angled walls with different angles, the at least two angled walls adapted to intimately contact at least two angled walls having different angles of the other of a male and female surface of the rest of the frame; and engine mounting structure adapted to carry loads transmitted by a motorcycle engine, wherein said at least one mating end includes a central axis, and wherein said two angled walls extend in a direction that is substantially parallel to said central axis. 18. The removable portion of claim 17, wherein said end includes a hollow tubular member and an end cap having a portion at least partially received within and welded to said hollow tubular member, and wherein said surface is defined by said end cap.19. The removable portion of claim 18, wherein said portion of said end cap that is received within said hollow tubular member includes a chamfered diameter surface.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.