JPS6238467Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a pillion step device for a motorcycle.

Two-seater motorcycles are equipped with pillion steps for rear seat passengers to rest their feet on, and the pillion steps are usually of the bar type, but in motorcycles with low floors such as scooters, they are fitted with pillion steps for a good appearance. A type of floor type is sometimes used.

The pillion steps mentioned above have a bending mechanism at the base of the step to store them when not needed and to escape when they hit an obstacle, but conventional ones simply bend upwards, so they cannot be easily moved from the front while driving. If it hits an obstacle, it cannot flip up and bend. Therefore, a structure has been proposed in which the bending hinge part of the step is inclined toward the rear of the vehicle so that it can be bent even by force from the front, but although this can be used for bar-type steps, it is not suitable for plate-shaped and floor-type steps. The step floor surface is slanted, which is inconvenient for foot placement. In order to deal with this, if the above-mentioned mechanism is adopted and the step floor surface is set to be horizontal during use, the front part of the step will protrude outward when folded and stored, which is undesirable.

The present invention was developed in view of the above, and its purpose is to project a pillion step with a plate-shaped floor surface so that the floor surface is horizontal, and to allow the pillion step to be folded vertically when stored. In a pillion step device for a pivotally mounted motorcycle, there is provided a pillion step on one of the base of the pillion step and the pillion step support portion of the vehicle body in the longitudinal direction of the vehicle body.
Two cylindrical protrusions are provided at a predetermined distance apart to form a recess between the cylindrical protrusions, the other is provided with a cylindrical protrusion that engages with the recess, and the cylindrical protrusion is provided at the base of the pillion step. and a cylindrical protrusion provided on the pillion step support part to connect the base of the pillion step to the pillion step support part of the vehicle body by rotatably inserting a pivot shaft into the cylindrical protrusion provided on the pillion step support part, and to connect the base of the pillion step to the pillion step support part of the vehicle body. Each of the opposing surfaces is formed in a spiral shape, and the pillion step protrudes so that the floor surface is horizontal, while being folded vertically when stored. To provide a pillion step device for a motorcycle, which can be bent and folded upward by the guiding action of a section.

Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic side view of a motorcycle 1, in which the embodiment shows a scooter type motorcycle, and FIG. 2 shows a frame thereof.

The frame 2 of the motorcycle 1 is a head tube 3
It consists of a single pipe extending downward and backward from the frame 2, and has a seat post section 4a with an approximately inverted L-shaped side surface at the rear end of the horizontal lower section 2a of the frame 2, and a seat post section 4a extending rearward from the upper end. The lower end center portion of the rear frame 4 consisting of the seat rail portion 4b is joined, and the left and right members of the rear frame 4 are connected at the lower portion.
The head tube 3 supports a front fork 5 that supports a front wheel 6 in a freely steerable manner, a handle 7 is provided on the upper part of a steering stem (not shown) of the front fork 5, and a front cover 8 that also serves as a leg shield is provided at the front of the frame. A low footrest type floor 9 is provided on the frame 2. The floor 9 is larger than the width of the rear frame 4, and has a width up to the outer end of the pillion step bracket 14 which protrudes from the lower left and right sides of the rear frame 4.

A seat 10 is provided on the upper part of the rear frame 4, and the seat 10 is long in the front and back for seating two people, and the area around the rear frame 4 below the seat 10 is covered with a rear cover 11. A power unit 12 that supports a rear wheel 13 is pivotably mounted to the rear lower part of the rear frame 4.

Pillion step brackets 14 are provided on the lower left and right sides of the rear frame 4 to protrude outward, and the bracket 14 has an intermediate portion or a base portion 14a formed of a press-formed steel plate material in the shape of a channel with a downward cross section in the embodiment. The flange portion 14b is bent in the front-rear direction and is welded to the left and right side surfaces of the lower part of the rear frame. The width of the floor 9 described above extends from the intermediate portion to the base portion 14a.

A cylindrical pivot part 1 is attached to the tip of the above bracket 14.
5, the pivot portion 15 is provided integrally with the front end of the bracket 14, and the pivot hole 1 in the front-rear direction
5a, and spiral engagement edges 15b and 15c facing in the same direction are provided at both axial ends of the pivot portion 15. As shown in FIG. 5, these engaging edges 15b and 15c are formed by punching out front and rear edges 14d and 14e of the front end 14c of the bracket 14 so as to be parallel to each other and slanting forward, and punching out these parts so that the center line N is the center of the engagement edges 15b and 15c. It is rolled up to form a cylindrical pivot, and as a result, the edge 1
When 4d and 14e become cylindrical, they become spiral engagement edges 15b and 15c.

16 is a pillion step base, base 16
is a flat plate having a certain area, and has a cylindrical pivot 17 at its base 16a, and the pivot 17 is provided integrally with the base 16 and has a pivot hole 17a extending in the front-rear direction. A recess 18 into which the pivot portion 15 of the bracket 14 is fitted and engaged is provided in the axially intermediate portion of the pivot portion 17, and the engaging edge is arranged in a cylindrical shape on opposite end surfaces in the axial direction of the recess 18. Spiral engagement edge 17 facing 15b, 15c
b, 17c are formed. Such an engaging edge 17b,
17c forms a concave part 16b that opens inwardly in the base 16a of the flat base 16 shown in FIG. A locking protrusion 16e is provided at the middle part in the width direction.
The outside is sloped so that it is parallel to the other side, and the center line is that part.
_N1 is rolled up to form the front and rear cylindrical pivot parts 17, and as a result, the edges 16c, 16d
When the spiral engagement edges 17b, 17 become cylindrical,
c is formed, and the locking protrusion 16e is formed on the engaging edge 1.
7b, 17c protrudes toward the proximal end, and when the base 16 is horizontal, the pivot portion 15 of the bracket 14
It functions as a stopper 19 that touches the front and supports the base 16 horizontally. Attachment holes 16f, 16f are bored in the above base 16, a plate-shaped step 20 is placed thereon, the bolt portion 20a of this is passed through the attachment hole 16f, and the step is fastened with a nut 21.

The bracket 14 is placed in the recess 18 of the base 16 above.
The pivot portion 15 at the tip is inserted into the opposing engaging edge 15.
b, 15c, 17b, 17c and hole 15
A and 17a are aligned and a support pin 22 is passed through the support pin 22, and a washer 23 and a clip 24 are engaged with the tip of the support pin 22 to regulate the axial direction.

Next, to explain its functions and effects in detail, FIGS. 1, 3, and 7 all show the state in which the step 20 is used, and the step 20 is held horizontally by the action of the locking protrusion 19. . The bracket 14 is fixed, and by lifting the step 20 upward, the step base 16 supporting it rotates upward about the pin 22, and at this time the spiral engagement edge 15
b, 17b, 15c, 17c guide action
As shown in the figure, it rotates and stands while moving a predetermined length W backward in the axial direction.

By the way, if you run with the step 20 extended horizontally and hit an obstacle, the step 20 will tend to move backward, but the spiral engagement edge 1
5b, 17b, 15c, and 17c, it rotates and rises while moving rearward, and automatically flips up and stands up, and enters the retracted state. If it hits an obstacle in front of it, it moves backwards and rotates upwards to soften the shock and is automatically set to the retracted state, which can be done while horizontally supporting the steps, and then to the standing position. If the steps become diagonal,
It does not protrude outward. When thrusting up from below, it also rises and rotates to stand up.

As is clear from the above, according to the present invention, the pillion step is of a floor type, so that the footrest surface is maintained horizontally and does not protrude outward when standing up and retracting.
In addition, when it comes to obstacles from the front, it moves backwards and raises and retracts automatically using the cam action of a spiral engagement. It is sufficient to form a spiral portion on the axially facing side of the branch, and the structure is simple, which has many advantages.

[Brief explanation of the drawing]

Fig. 1 is a side view of the motorcycle, Fig. 2 is an exploded perspective view of the frame, Fig. 3 is a plan view of the step bracket and step base, Fig. 4 is an exploded perspective view, and Fig. 5 is an exploded plan view of the same. , FIG. 6 is an exploded plan view of FIG. 3, and FIG. 7 is an explanatory side view of the step. In the drawing, 1 is a motorcycle, 20 is a step, 1
6 is a base, 14 is a vehicle body side support part, 15 is a protrusion, 1
7 is a recess, 15b, 15c, 17b, 17c are end faces, and 22 is a pivot.

Claims (1)

[Scope of Claim for Utility Model Registration] A pillion step device for a motorcycle in which a pillion step having a floor surface on a plate is projected so that the floor surface is horizontal, and is pivoted to the vehicle body so that it can be folded vertically when stored. , two cylindrical protrusions are provided at a predetermined distance in the longitudinal direction of the vehicle body on one of the base of the pillion step and the pillion step support portion of the vehicle body, and a recess is formed between the cylindrical protrusions; A pivot is rotatably inserted through the cylindrical protrusion provided at the base of the pillion step and the cylindrical protrusion provided on the pillion step support portion to engage with the base of the pillion step. A pillion step device for a motorcycle, wherein the pillion step device is coupled to the pillion step support portion of a vehicle body, and axially opposing surfaces of both the cylindrical protrusions are each formed in a spiral shape.