JP3242085B2 - Motorcycle footrest device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a footrest device for a motorcycle, and more particularly to a footrest device for a motorcycle capable of adjusting a position of the footrest device.

[0002]

2. Description of the Related Art Generally, in a motorcycle in which a rider straddles a seat, a rod-shaped footrest protruding to the side of a vehicle body is widely used. By the way, this type of footrest is extremely important for stabilizing the waist and upper body by putting a foot on the footrest, and conventionally, the footrest is generally fixedly mounted at a position under the seat where it is most easily used.

However, in the above-mentioned general footrest mounting structure, the position on which the foot rests is fixed at a fixed position despite the fact that the occupants have different physiques.
Depending on the size of the physique, there is a drawback that it is not always possible to ride in a comfortable posture, which is one of the factors that cause fatigue during long-time driving. In particular, in recent years, the number of women driving motorcycles has been increasing, and the above-mentioned problems are particularly conspicuous because of the large differences in body shape and physique from men.

[0004] For this reason, for example, the mounting position of the footrest can be appropriately adjusted. However, the mounting position of the footrest can be adjusted with a simple structure and one-touch operation. Requested.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to meet the above-mentioned demands, and to mount a step of a motorcycle so that the mounting position of a footrest can be adjusted with a simple structure and with a simple operation. It is an object to devise a mechanism.

[0006]

Means for solving the above-mentioned problems The present invention, which has been made to solve the above-mentioned problems, relates to a footrest device for a motorcycle, which comprises a frame having a plurality of recesses and a linear guide groove communicating the respective recesses. A shaft portion of the footrest is slidably movable along the guide groove, and is provided so as to be movable in an axial direction of the shaft portion, and a flat guide portion is provided on the shaft portion of the footrest. The guide portion fits into the guide groove to restrict the rotation of the shaft portion of the footrest, and further, the shaft portion of the footrest fits into the concave portion of the frame by an axial tightening force.
The rotation is restricted and held by the guide grooves .

[0007]

The shaft portion of the footrest is fitted into the recess of the frame by the tightening force in the axial direction , and the rotation is regulated by the guide groove.
When the tightening force is released, the shaft of the footrest slides and moves along the guide groove of the frame, and is positioned in a predetermined recess of the frame. Can be changed. Further, since a guide portion having a flat surface is provided on the shaft portion of the footrest, and the guide portion is fitted in the guide groove, the flat surface of the guide portion abuts the guide surface of the guide groove, and the tightening force is reduced. and it not strong is restricted reliably even shank rotation, also, the shaft portion of the footrest is so held by the recess of the frame with the axial direction of the clamping force, as described above, the mounting structure is simple Further, even if the tightening force is not strong, the shaft portion of the footrest is firmly held at a predetermined position of the guide groove by the concave portion.

[0008]

Next, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. This patent application is a divisional application whose parent application is 1991 Patent Application No. 12858 (division of the invention according to claim 2 of the parent application). There are many points that overlap with the embodiments of the invention of the parent application. Therefore, based on the description of the embodiment of the invention of the parent application (application for the invention according to claim 1), it is preferable to explain the embodiment of the invention of the present application,
Since it is preferable from the viewpoint of clarity, first, an embodiment of the invention of the parent application will be described with reference to FIGS. 1 to 5, and subsequently, with reference to FIGS. An embodiment will be described.

[Embodiment of the Invention of the Parent Application for Reference] In the invention of the parent application, roughly speaking, the position adjusting mechanism of the footrest is a so-called rotary type, and this rotation is locked by a lock device to lock the footrest. The position is fixed, the lock is released, the footrest is rotated along a predetermined rotation circle to change the position, and the footrest is locked by the lock device again at the adjusted position, and further fixed. The rotation about the axis of the step portion is locked by another locking device, this lock is released, and the rotation of the step portion is rotated about the axis so that the direction of the step surface can be adjusted. is there.

A frame 1 of the motorcycle includes a pair of left and right main frames 3 extending rearward from a head pipe 2, a rear arm bracket 4 (made of a light alloy casting such as aluminum) connected to the rear of each main frame 3, and a head. A pair of left and right down tubes 5 extending downward from the pipe 2 and connected to the rear arm bracket 4, a seat rail 6 extending rearward from each main frame 3, and a back stay 7 connecting the seat rail 6 and the rear arm bracket 4. It is configured.

A front fork 8 is attached to the head pipe 2, and a front wheel 9 is supported below the front fork 8. The main frame 3 has a fuel tank 10
The seat 11 located behind the fuel tank 10 is supported by the seat rail 6. An engine 12 is mounted in a space formed by the head pipe 2, the main frame 3, the rear arm bracket 4 and the down tube 5, and a rear arm 13 is supported by the rear arm bracket 4, and a rear end of the rear arm 13 The rear wheel 14 is supported.

A pair of left and right rear arm brackets 4 have circular recesses 4a formed on the sides thereof.
The lock ring 15 is engaged with the annular recess 4b and the screw 1
The lock ring 15 has lock engagement teeth 15a formed all around. A rotating bracket 17 is provided on the support shaft 1 in the recess 4a of the rear arm bracket 4.
8 is provided so as to be rotatable about the fulcrum, and the rotating bracket 17 is provided with lock meshing teeth 17a at three equally divided portions on a surface of the lock ring 15 opposed to the lock meshing teeth 15a. The rotation of the rotating bracket 17 is restricted by the concave and convex engagement of the teeth 15a and 17a.

A flat portion 18a is formed at the center of the support shaft 18, and the flat portion 18a is inserted into the rear arm bracket 4 to restrict rotation. The head 18 b of the support shaft 18 is fitted into the circular recess 17 b of the rotating bracket 17, and the circlip 19 prevents the head from falling off. Further, a screw portion 18 formed at the tip of the support shaft 18
Both ends of an iron lock lever 20 disposed between a pair of left and right rear arm brackets 4 are screwed to c with reverse screws.

When the lock lever 20 is rotated by holding the operating portion 20a, the position of the lock lever 20 is restricted between the pair of left and right rear arm brackets 4; Move each. The movement of the support shaft 18 causes the head 18b to move.
Then, the pair of left and right rotating brackets 17 secured by the circlip 19 move simultaneously.

Therefore, when the lock lever 20 is rotated in the unlocking direction, the support shaft 18 moves outward, and the rotating bracket 17 moves in a direction away from the rear arm bracket 4, and the lock meshing teeth 17 a and the lock ring 15
The concave and convex engagement with the lock meshing teeth 15a is released, and the rotating bracket 17 becomes rotatable. On the other hand, when the lock lever 20 is rotated in the locking direction, the pair of left and right support shafts 18 are rotated.
Move inward, the rotating bracket 17 moves in a direction approaching the rear arm bracket 4, and its lock meshing teeth 17 a and the lock meshing teeth 15 of the lock ring 15.
a is unevenly engaged, and the rotation of the pair of left and right rotating brackets 17 is regulated respectively.

A washer 21 is provided inside the rear arm bracket 4 at a contact portion with the end of the lock lever 20 to prevent wear of the contact portion due to rotation of the lock lever 20. The rear arm bracket 4 and the rotating bracket 17 are provided with cutouts 4c and 17c, respectively.
Each has been reduced in weight.

A concave portion 17d is formed in the rotating bracket 17, and a lock member 24 fixed to the shaft portion 23 of the footrest 22 is positioned in the concave portion 17d.
The lock engagement teeth 24a formed on the entire periphery of the cover 4 engage with the lock engagement teeth 25a formed on the lid 25 in an uneven manner. The lid 25 is applied to the step 17 e of the concave portion 17 d of the rotating bracket 17, and is tightened and fixed with a bolt 26 so that the concave 17
d is closed.

The shaft portion 23 of the footrest 22 is rotatably provided on the rotating bracket 17 and the cover 25 so as to be movable in the axial direction. Further, the lock member 24 is provided between the recess 17d and the lock member 24 in the cover direction. Spring 27 biasing
The spring 27 prevents the footrest 22 from rattling. Shaft 23 of footrest 22
A mounting portion 28a of the change pedal 28 is rotatably inserted into the shaft portion 23. Further, a step portion 29 is provided at a tip end of the shaft portion 23, and a plate provided on the mounting portion 28a of the change pedal 28 and the shaft portion 23 is provided. The rattle of the change pedal 28 is regulated by interposing a disc spring 31 between the change pedal 30.

The change pedal 28 and the change operation shaft 32 of the shift device of the engine 12 are connected to each other by an extendable connection mechanism 3.
3, and the shift operation is performed by rotating the change operation shaft 32 by operating the change pedal 28. A connecting member 34 constituting the connecting mechanism 33 is rotatably attached to the change pedal 28 via a support pin 35, while the connecting member 36 is rotatably attached to a change arm 38 via a support pin 37, The change arm 38 is fastened and fixed to the change operation shaft 32 of the shift device with a bolt 39. These two connecting members 34, 3
The screw portions 34a and 36a are formed as reverse screws, and the adjustment lot 40 is screwed to the screw portions 34a and 36a. The adjustment lot 40 is rotated in accordance with a change in the mounting position of the footrest 22. Thus, the connection mechanism 33 can be adjusted by expanding and contracting.

Accordingly, when the lock lever 20 is rotated in the unlocking direction, the support shaft 18 moves outward, and the rotating bracket 17 moves in a direction away from the rear arm bracket 4, and the lock engagement teeth 17 a and the lock ring 15
The concave and convex engagement with the lock meshing teeth 15a is released, and the rotating bracket 17 becomes rotatable. In this state, the mounting position of the footrest 22 is changed by rotating the rotating bracket 17, and at the same time, the connecting mechanism 33 is adjusted by expanding and contracting. When the shaft 23 of the footrest 22 is pushed in at this position, the spring 27 is opposed. By moving in the axial direction, the concave / convex engagement between the lock member 24 and the lid 25 is released. With this, the shaft portion 23 of the footrest 22 becomes rotatable, the direction of the step portion 29 is adjusted according to the mounting position of the footrest 22, and the pushing of the shaft portion 23 of the footrest 22 is released at a predetermined rotation position. The lock engagement teeth 24a, 25a of the lock member 24 and the lid 25 are unevenly engaged by the spring 27, and are held at a predetermined position.

When the lock lever 20 is rotated in the locking direction, the support shaft 18 moves inward, and the rotating bracket 17 moves in a direction approaching the rear arm bracket 4, and the lock meshing teeth 17a and the lock ring 15 And the lock meshing teeth 15a of the rotating bracket 1
7 is restricted. As a result, the tip of the shaft 23 of the footrest 22 comes into contact with the lock ring 15 and the shaft 2
3 is restricted from moving in the axial direction.

The above is an embodiment of the invention of the parent application. Next, an embodiment of the invention of the present application will be described. The footrest position adjusting mechanism of the invention of the parent application is a rotary type, while the footrest position adjusting mechanism of the present invention is a linear slide type.

[0023]

6 to 9 show a footrest device for a motorcycle according to the present invention, FIG. 6 is a side view of the footrest device of the present invention, FIG. 7 is a sectional view taken along the line VII--VII of FIG. 6, and FIG. FIG. 9 is a cross-sectional view taken along the line IX-IX in FIG.

The rear arm bracket 42 fixed to the main frame 41 constituting the frame 1 of the motorcycle is formed with three continuous circular concave portions 43 to 45, and
Each of the concave portions 43 to 45 is a straight line in which the line L connecting the axes of the concave portions is inclined obliquely forward, and is positioned so that the positions in the front-rear direction and the height direction are different by a predetermined amount. Further, a guide groove 46 is formed along a straight line L connecting the axes of the concave portions 43 to 45.

The shaft portion 48 of the footrest 47 is
9 and a guide shaft 49a inserted through the small-diameter portion 49c.
, From which a lock nut 51 is screwed via a lock spacer 50. Lock spacer 5
Numeral 0 is movable inside the rear arm bracket 42 by sliding a step 52 formed along the guide groove 46.

The guide shaft 49a has a screw portion 49d and a guide portion 49b formed at a large pitch, and the guide portion 49b is slidable along the guide groove 46 so as to be movable and restricted in rotation. An attachment portion 53a of the lock handle 53 is screwed to the screw portion 49d of the guide shaft 49a, and when the lock handle 53 is rotated, the guide shaft 49a
Of the lock handle 53 is restricted.
a is movable in the axial direction. Footrest 47
A mounting portion 54a of the change pedal 54 is rotatably provided on the main shaft 49 of the shaft portion 48, and a step portion 55 is provided on a tip portion 49e of the main shaft 49 of the shaft portion 48.

Therefore, when the lock handle 53 is rotated in the locking direction, the mounting portion 53a is attached to the footrest 4.
Guide shaft 49 inserted through main shaft 49 of shaft portion 48
a of the lock handle 53 is engaged with one of the recesses 43 to 45 of the rear arm bracket 42 to move the lock spacer 5.
At 0, it is clamped and held by the rear arm bracket 42.

When the lock handle 53 is rotated in the unlocking direction, the mounting portion 53a is connected to the screw portion 4 of the guide shaft 49a.
9d is moved away from the rear arm bracket 42 in a direction away from the rear arm bracket 42, the tightening force generated between the lock spacer 50 and the footrest 47 is released, and the footrest 47 is guided to the guide groove 46 via the guide portion 49b of the guide shaft 49a. Recesses 43-4
5, the position of the footrest 47 is changed.

In this case, since the footrest 47 moves in parallel along the straight line L, the direction of the step portion 55 does not change. Therefore, it is not necessary to adjust the direction of the step 55. Then, when the lock handle 53 is rotated in the lock direction, the mounting portion 53a of the lock handle 53 is moved over the screw portion 49d of the guide shaft 49a by the rear arm bracket 4.
2 and is pressed to a predetermined position in the concave portions 43 to 45, and is thereby fixed to the rear arm bracket 42 between the lock spacer 50 and the lock spacer 50.

[Other Embodiments of the Invention] FIGS. 10 to 13 show another embodiment of the present invention.
0 is a side view thereof, FIG. 11 is a sectional view taken along line XI-XI of FIG.
2 is a sectional view taken along the line XII-XII in FIG. 10, and FIG.
FIG. 13 is a sectional view taken along the line XIII.

A rear arm bracket constituting a frame of the motorcycle is provided with a footrest mounting body 63 composed of an intermediate case 60, an outer case 61 and an inner case 62. The outer case 61 has six concave portions 61a outside the outer case 61.
Are formed, and a guide groove 61b connecting the respective concave portions 61a is formed. A guide groove 62a is formed inside the inner case 62 at a position facing the guide groove 61b of the outer case 61, and a shaft hole 62b is formed coaxially with the axis of the recess 61a.

A guide portion 65d is provided on the shaft portion 65 of the footrest 64, and a tip portion 65a of the shaft portion 65 is inserted into a shaft hole 62b, and a lock bolt 67 is screwed into the shaft hole 62b. By screwing the lock bolt 67, the head 65b of the shaft 65 of the footrest 64 is
The shaft portion 65 is pressed and fixed to the recess 1a by the clamping force in the axial direction.

The shaft portion 65 of the footrest 64 has a cylindrical portion 6
When the footrest 64 is moved against the spring 70, the cylindrical portion 65e slides along the guide groove 61b of the outer case 61 and is movable. In this case, if the footrest 64 is moved to a predetermined position and set, the upper and lower flat portions 65f of the guide portion 65d fit into the guide grooves 61b, so that the rotation of the shaft portion 65 of the footrest 64 is restricted.

A pair of support rings 68 and 69 are inserted through the shaft 65 of the footrest 64, and a spring 70 is provided between the support rings 68 and 69.
The shaft portion 65 is supported by the spring 70 via the support ring 69.
Of the footrest 64 when the lock bolt 67 is loosened is constantly pressed against the concave portion 61a of the outer case 61.

Further, the mounting portion 71a of the change pedal 71 is attached to the shaft 65 of the footrest 64 in the same manner as in the above embodiment.
Is provided so as to be rotatable, and further, a distal end portion 65c of the shaft portion 65 is provided.
Is provided with a step unit 72. A position adjusting groove 73 having stopper portions 73a is formed at three positions on the change pedal 71, and a support pin 74 is provided in the position adjusting groove 73. The support pin 74 is provided with a coupling mechanism 75 for connecting to the engine. A connecting member 76 is attached.

The support pin 74 is formed with a stopper shaft portion 74a and a slide shaft portion 74b. A spring 77 inserted through the slide shaft portion 74b is screwed to the change pedal 71 and the tip of the support pin 74. Cap 78
And the flange portion 74c of the support pin 74 is constantly pressed against the change pedal 71 so that the stopper shaft portion 74a of the support pin 74 moves from the stopper portion 73a of the position adjustment groove 73. I am trying not to come off.

Therefore, when the mounting position of the footrest 64 is changed, when the lock bolt 67 of the shaft 65 of the footrest 64 is rotated in the unlocking direction, the shaft 65 is rotated.
The tightening force generated between the head 65b and the head 65b is released.
For this reason, the footrest 64 is moved by the dimension of H against the spring 70, and the front end 65a of the shaft 65 is disengaged from the shaft hole 62b. Thus, the tip portion 65a of the shaft portion 65 moves along the guide groove 62a of the inner case 62, and the cylindrical portion 65e of the shaft portion 65 moves along the guide groove 61b of the outer case 61. The footrest 64 is moved to the position of the predetermined recess 61a, and the mounting position of the footrest 64 is changed.

At the same time, the change pedal 71
The support pin 74 is pulled against the spring 77 to release the engagement between the stopper shaft 74a of the support pin 74 and the stopper 73a of the position adjusting groove 73 to adjust the position of the slide shaft 74b of the support pin 74. The connection mechanism 75 is adjusted by moving along the groove 73.

When the footrest 64 is released after the mounting position of the footrest 64 is changed, the tip 65a of the shaft 65 enters the shaft hole 62b by the spring 70, and the head 65b of the shaft 65 is held in the recess 61a. Is done.
Since the upper and lower flat portions 65f of the guide portion 65d fit into the guide grooves 61b, the rotation of the footrest 64 is restricted. When the lock bolt 67 is rotated in the locking direction in this state, the shaft portion 65 of the footrest 64 is pressed by the concave portion 61a, and is thereby fastened and fixed to the lock bolt 67. The guide groove 61b of this embodiment is composed of a vertical groove and horizontal grooves at both upper and lower ends thereof. The height is adjusted in three stages of an upper stage, a middle stage, and a lower stage. One position can be selected. In this embodiment, since the vertical grooves are vertical, it is possible to select positions before and after each step at the same height. Incidentally, if this vertical groove is inclined obliquely forward as in the embodiment shown in FIG. 6, the height of the front and rear positions of each step will be slightly different, and the inclination angle of the vertical groove will be changed. If different, the adjustable height and the front and rear position will be different.

[0040]

As described above, according to the present invention, the frame is provided with a plurality of recesses and linear guide grooves communicating the respective recesses, and the shaft of the footrest slides along the guide grooves. It is made movable, and the guide portion provided on the shaft portion of the footrest fits into the guide groove to restrict the rotation of the shaft portion of the footrest. Further, the shaft portion of the footrest is recessed in the frame by the tightening force in the axial direction. And the above
Since the rotation is regulated and held by the guide groove , when the tightening force is released, the shaft of the footrest slides and moves along the guide groove of the frame, and is positioned in a predetermined concave portion of the frame to move the footrest. The mounting position can be changed, and when the mounting position is changed, the footrest only moves in a straight line, so that the direction of the step does not change. It is not necessary to rotate the to adjust the direction of the step portion again. In addition, since the guide groove is a straight groove, the guide mechanism of the footrest is simple,
The operation of adjusting the position is simple and easy. Further, a guide portion having a flat surface is provided on the shaft portion of the footrest, and the guide portion is fitted in the guide groove. Therefore, the flat surface of the guide portion contacts the guide surface of the guide groove, and the tightening force is reduced. and it not strong is restricted reliably even shank rotation, also, the shaft portion of the footrest is so held by the recess of the frame with the axial direction of the clamping force, as described above, the mounting structure is simple Further, even if the tightening force is not strong, the shaft portion of the footrest is firmly held at a predetermined position of the guide groove.

[Brief description of the drawings]

FIG. 1 is a side view of a motorcycle including a footrest device.

FIG. 2 is a side view of the footrest device.

FIG. 3 is a sectional view taken along the line III-III of FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is a side view of a mechanism for connecting a change pedal and an engine provided in the footrest device.

FIG. 6 is a side view of the footrest device.

FIG. 7 is a sectional view taken along the line VII-VII of FIG. 6;

FIG. 8 is a view as seen from an arrow A in FIG. 7;

FIG. 9 is a sectional view taken along line IX-IX of FIG. 7;

FIG. 10 is a side view of the footrest device.

11 is a sectional view taken along the line XI-XI in FIG.

12 is a sectional view taken along the line XII-XII of FIG.

FIG. 13 is a sectional view taken along line XIII-XIII of FIG. 10;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Frame 29 ... Step part 42 ... Rear arm bracket 43, 44, 45 ... Depression 46 ... Guide groove 47 ... Footrest 48 ... Shaft part 49 ... Main shaft 49a ... guide shaft 49b ... guide part 49d ... screw part 50 ... lock spacer 51 ... lock nut 52 ... step part 53 ... lock handle 60 ... intermediate case 61 ... Outer case 61a recess 61b guide groove 62 inner case 62a guide groove 62b shaft hole 63 footrest mounting body 64 footrest 65 shaft 65d: Guide part 67: Lock bolt 70: Spring

──────────────────────────────────────────────────続 き Continued on the front page (56) References JP-A-2-41892 (JP, U) JP-A-2-124780 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) B62J 25/00

Claims (1)

(57) [Claims] A frame is provided with a plurality of recesses and a linear guide groove communicating with each of the recesses, and a shaft portion of a footrest is slidably movable along the guide grooves. The footrest is provided movably in the axial direction, and a flat guide portion is provided on the shaft portion of the footrest, and the guide portion is fitted in the guide groove to restrict the rotation of the shaft portion of the footrest. The shaft portion of the footrest is fitted into the recess of the frame by the tightening force in the axial direction.
A footrest device for a motorcycle, wherein the rotation is regulated and held by the guide groove .