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US 5,704,442 AGranted
Frame structure for a motorcycle
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsHiroshi Okazaki, Ryoji Nakajima
Life of this patent
Estimating the term…
Abstract
A frame structure for a motorcycle provided with a sub-frame extending forwardly from pivot plates fixed at the lower ends of a main frame. The sub-frame includes a U-shaped member having right and left opening ends thereof connected to the pivot plates at the lower ends of the main frame. The sub-frame extends approximately horizontally and forwardly from the connecting portions so that the front end portion of the sub-frame is not connected to the down frames.
Claims16
A frame structure for a motorcycle, comprising:
- a head pipe;
- a pair of right and left main frames extending obliquely, rearwardly and downwardly from said head pipe and having a front end portion and a rear end portion;
- a pair of right and left down frames extending approximately downwardly from said head pipe and having an upper end portion and a lower end portion;
- a sub-frame connected to said main frames, wherein said sub-frame having a U-shape, with a right rear end and a left rear end of said sub-frame being connected to the rear end portions of said right and left main frames by a pair of respective connecting portions, and a front end portion of said sub-frame extending approximately horizontally and forwardly from said connecting portions and being positioned lower than the lower end portions of said down frames;
- and
- wherein said main frames, said down frames and said sub-frame are adapted for mounting an engine thereto.
3 more elements
A frame structure for a motorcycle, comprising:
- a pair of right and left main frames extending obliquely, rearwardly and downwardly from a head pipe and having a front end portion and a rear end portion;
- a pair of right and left down frames extending approximately downwardly from said head pipe and having an upper end portion and a terminal lower end portion;
- a sub-frame connected to said rear end portions of said main frames, with said sub-frame including a pair of right and left members wherein each of said members has a terminal front end and a rear end, with the rear ends of said sub-frame members being connected to said rear end portions of said right and left main frames by a pair of connecting portions, and the terminal front ends of said sub-frame members extending approximately horizontally and forwardly from the connecting portions and positioned lower than the terminal lower end portions of said down frames;
- and wherein said main frames, said down frames and said sub-frame are adapted for mounting an engine thereto.
1 more element
A frame structure for a motorcycle having a pair of guard pipes mounted thereto, comprising:
- a head pipe;
- a pair of right and left main frames extending obliquely, rearwardly and downwardly from said head pipe and having a front end portion and a rear end portion;
- a pair of right and left down frames extending approximately downwardly from said head pipe and having an upper end portion and a lower end portion;
- a sub-frame connected to said main frames, wherein said sub-frame having a U-shape, with a right rear end and a left rear end of said sub-frame being connected to the rear end portions of said right and left main frames by a pair of respective connecting portions, and a front end portion of said sub-frame extending approximately horizontally and forwardly from said connecting portions and being positioned lower than the lower end portions of said down frames;
- wherein said main frames, said down frames and said sub-frame are adapted for mounting an engine thereto;
- and
- wherein the lower end portions of said down frames and the front end portion of said U-shape sub-frame are adapted for mounting the pair of guard pipes therebetween.
4 more elements
A frame structure for a motorcycle having a pair of guard pipes mounted thereto, comprising:
- a pair of right and left main frames extending obliquely, rearwardly and downwardly from a head pipe and having a front end portion and a rear end portion;
- a pair of right and left down frames extending approximately downwardly from said head pipe and having an upper end portion and a lower end portion;
- a sub-frame connected to said rear end portions of said main frames, with said sub-frame including a pair of right and left members wherein each of said members has a front end and a rear end, with the rear ends of said sub-frame members being connected to said rear end portions of said right and left main frames by a pair of connecting portions, and the front ends of said sub-frame members extending approximately horizontally and forwardly from the connecting portions and positioned lower than the lower end portions of said down frames;
- wherein said main frames, said down frames and said sub-frame are adapted for mounting an engine thereto;
- and
- wherein said main frames, said down frames and said sub-frame front ends of said sub-frame members are adapted for mounting the pair of guard pipes therebetween.
3 more elements
A frame structure for a motorcycle having a pair of guard pipes, a pair of steps and a stand mounted thereto, which comprises:
- a head pipe;
- a pair of right and left main frames extending obliquely, rearwardly and downwardly from said head pipe and having a front end portion and a rear end portion;
- a pair of right and left down frames extending approximately downwardly from said head pipe and having an upper end portion and a lower end portion;
- a sub-frame connected to said main frames, wherein said sub-frame having a U-shape, with a right rear end and a left rear end of said sub-frame being connected to the rear end portions of said right and left main frames by a pair of respective connecting portions, and a front end portion of said sub-frame extending approximately horizontally and forwardly from said connecting portions and being positioned lower than the lower end portions of said down frames;
- wherein said main frames, said down frames and said sub-frame are adapted for mounting an engine thereto;
- and
- wherein the lower end of portions of said down frames and the front end portion of said U-shape sub-frame are adapted for mounting the pair of guard pipes therebetween;
- and
- wherein said sub-frame is adapted for mounting thereto (i) the pair of steps and (ii) the stand.
6 more elements
A frame structure for a motorcycle having a pair of guard pipes, a pair of steps and a stand, which comprises:
- a pair of right and left main frames extending obliquely, rearwardly and downwardly from a head pipe and having a front end portion and a rear end portion;
- a pair of right and left down frames extending approximately downwardly from said head pipe and having an upper end portion and a lower end portion;
- a sub-frame connected to said rear end portions of said main frames, with said sub-frame including a pair of right and left members wherein each of said members has a front end and a rear end, with the rear ends of said sub-frame members being connected to said lower end portions of said right and left main frames by a pair of connecting portions, and the front ends of said sub-frame members extending approximately horizontally and forwardly from the connecting portions and positioned lower than the lower end portions of said down frames;
- and wherein said main frames, said down frames and said sub-frame are adapted for mounting an engine thereto;
- and
- wherein said sub-frame is adapted for mounting thereto (i) the pair of steps, and (ii) the stand.
3 more elements
A frame structure for a motorcycle, comprising:
- a head pipe;
- a pair of right and left main frames extending obliquely, rearwardly and downwardly from said head pipe and having a front end portion and a rear end portion;
- a gusset plate secured to said head pipe;
- a pair of right and left down frames extending approximately downwardly from said gusset plate and having an upper end portion and a lower end portion;
- a sub-frame connected to said main frames, said sub-frame having a U-shape, with a right rear end and a left rear end of said sub-frame being connected to the rear end portions of said right and left main frames by a pair of connecting portions, and a front end portion of said U-shaped sub-frame extending approximately horizontally and forwardly from said connecting portions and being positioned at a predetermined location being displaced beneath the lower end portions of said down frames;
- and
- wherein said main frames, said down frames and said sub-frame are adapted for mounting an engine thereto.
4 more elements
A frame structure for a motorcycle having engine mounting brackets mounted thereon, comprising:
- a head pipe;
- a pair of right and left main frames extending obliquely, rearwardly and downwardly from said head pipe and having a front end portion and a rear end portion;
- a pair of right and left down frames extending approximately downwardly from said head pipe and having an upper end portion and a terminal lower end portion;
- a sub-frame connected to said main frames, said sub-frame including a pair of right and left members having terminal front and rear end portions, with the rear end portions of said sub-frame members being connected to the rear end portions of said right and left main frames by a pair of connecting portions, and the terminal front end portions of said sub-frame members extending approximately horizontally and forwardly from said pair of connecting portions and positioned lower than the terminal lower end portions of said down frames;
- and
- wherein (i) said sub-frame is adapted for mounting the engine mounting brackets thereto, and (ii) said main frames, said down frames and said sub-frame are adapted for mounting an engine thereto.
3 more elements
A frame structure for a motorcycle having a pair of pipe guards mounted thereto, which comprises:
- a head pipe;
- a pair of right and left main frames extending obliquely, rearwardly and downwardly from said head pipe and having a front end portion and a rear end portion;
- a gusset plate secured to said head pipe;
- a pair of right and left down frames extending approximately downwardly from said gusset plate and having an upper end portion and a lower end portion;
- a sub-frame connected to said main frames, said sub-frame having a U-shape, with a right rear end and a left rear end of said sub-frame being connected to the rear end portions of said right and left main frames by a pair of connecting portions, and a front end portion of said U-shaped sub-frame extending approximately horizontally and forwardly from said connecting portions and being positioned at a predetermined location being displaced beneath the lower end portions of said down frames;
- wherein said main frames, said down frames and said sub-frame are adapted for mounting an engine thereto;
- and
- wherein the lower end portions of said down frames and the front end portion of said U-shape sub-frame are adapted for mounting the pair of guard pipes therebetween.
5 more elements
A frame structure for a motorcycle having engine mounting brackets and a pair of guard pipes mounted thereto, comprising:
- a head pipe;
- a pair of right and left main frames extending obliquely, rearwardly and downwardly from said head pipe and having a front end portion and a rear end portion;
- a pair of right and left down frames extending approximately downwardly from said head pipe and having an upper end portion and a lower end portion;
- a sub-frame connected to said main frames, said sub-frame including a pair of right and left members having front and rear end portions, with the rear end portions of said sub-frame members being connected to the rear end portions of said right and left main frames by a pair of connecting portions, and the front end portions of said sub-frame members extending approximately horizontally and forwardly from said pair of connecting portions and positioned lower than the lower end portions of said down frames:
- wherein (i) said sub-frame is adapted for mounting the engine mounting brackets thereto, and (ii) said main frames, said down frames and said sub-frame are adapted for mounting an engine thereto;
- and
- wherein the lower end portions of said down frames and the front end portions of said sub-frame members are adapted for mounting the pair of guard pipes therebetween.
4 more elements
A frame structure for motorcycle having a pair of guard pipes mounted thereto, which comprises:
- a head pipe;
- a pair of right and left main frames extending obliquely, rearwardly and downwardly from said head pipe and having a front end portion and a rear end portion;
- a gusset plate secured to said head pipe;
- a pair of right and left down frames extending approximately downwardly from said gusset plate and having an upper end portion and a lower end portion;
- a sub-frame connected to said main frames, said sub-frame having a U-shape, with a right rear end and a left rear end of said sub-frame being connected to the rear end portions of said right and left main frames by a pair of connecting portions, and a front end portion of said U-shaped sub-frame extending approximately horizontally and forwardly from said connecting portions and being positioned at a predetermined location being displaced beneath the lower end portions of said down frames;
- wherein said main frames, said down frames and said sub-frame are adapted for mounting an engine thereto;
- and
- wherein said U-shaped sub-frame is adapted for mounting thereto the pair of guard pipes.
5 more elements
A frame structure for a motorcycle having engine mounting brackets mounted thereon, comprising:
- a head pipe;
- a pair of right and left main frames extending obliquely, rearwardly and downwardly from said head pipe and having a front end portion and a rear end portion;
- a pair of right and left down frames extending approximately downwardly from said head pipe and having an upper end portion and a terminal lower end portion;
- a sub-frame connected to said main frames, said sub-frame including a pair of right and left members having terminal front and rear end portions, with the rear end portions of said sub-frame members being connected to the rear end portions of said right and left main frames by a pair of connecting portions, and the front end portions of said sub-frame members extending approximately horizontally and forwardly from said pair of connecting portions and positioned lower than the lower end portions of said down frames;
- and
- wherein (i) said sub-frame is adapted for mounting the engine mounting brackets thereto, and (ii) said main frames, said down frames and said sub-frame are adapted for mounting an engine thereto.
3 more elements
Dependencies are inferred from the claim text.