JPH06211177A - Front stand device for motorcycle - Google Patents

Abstract

PURPOSE:To provide a front stand device for a motorcycle, which is not recognized at the time of out of use in such a way not to be affected in appearance, and also can freely change its whole length even while its front wheel is being maintained. CONSTITUTION:This is a front stand device 1 for a motorcycle, which is provided for the down tube 14 composed of a hollow cylinder, that is, a part of a body frame 4 where the device is installed in the hollow section S of the down tube 14 in such a way as to be freely pulled in and out. And the device is made up of a stand tube 16 which is to be fixed at the lower end section 14a of the down tube 14 when it is pulled in and out, an adjust bolt 18 which is provided for the stand tube 16 in such a way as to be freely pulled in and out via a threadedly engaging means 30, and of a grounding plate 22 which is fitted onto the shaft section 34b of the adjust bolt 18 while being rotatable in relation to the adjust bolt 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front stand device for a motorcycle. Specifically, the present invention relates to a front stand of a motorcycle which is convenient for carrying out maintenance on the front wheels and around the front wheels.

[0002]

2. Description of the Related Art Speaking of a parking stand for a two-wheeled vehicle, usually, a vehicle body is upright at two points, a side stand that supports the vehicle body diagonally at three points, a front wheel and a rear wheel, and either one of the front and rear wheels. I can think of it as a center stand (main stand) to support. By the way, in the side stand, since both the front and rear wheels are in contact with the ground, maintenance of the front and rear wheels was troublesome. On the other hand, in the center stand, one of the front and rear wheels is in contact with the ground, so maintenance of the wheel on the side of contact is troublesome. Therefore, the applicant of the present invention provides a front stand a of a motorcycle disclosed in Japanese Utility Model Laid-Open No. 59-177571, thereby
All the rear wheels are easy to maintain.

A front stand a of a motorcycle is provided with movable legs b which can be extended and contracted. When the movable leg b is used for maintenance of the front wheel c or the like, the entire length can be extended to float the front wheel c, and when not used, the overall length can be shortened to be compact.

By the way, the body frame e is a basic skeleton of a motorcycle and is not only an important part for supporting the weight of the vehicle, but also has a great influence on determining the outer shape of the motorcycle. However, the front stand a of the motorcycle has the outer surface g of the down tube f which is a part of the vehicle body frame e located between the front wheel c and the engine d.
Since it is integrally attached to the down tube f via the attachment means h, the outer shape of the vehicle body frame e is affected. Therefore, even if the front stand a is attached to the vehicle body frame e, it must be designed so that the outer shape of the motorcycle does not deteriorate, which is troublesome. Also, in the front stand a,
Since the length of the movable leg b is fixed by the positioning screw i, it is troublesome to freely change the length of the movable leg b during maintenance of the front wheel c.

[0005]

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned conventional problems, and the problem to be solved is to avoid the adverse effect on the outer shape of the motorcycle when it is not used. It is an object of the present invention to provide a two-wheeled vehicle stand device whose existence is unknown and whose length can be freely changed even during maintenance of the front wheels.

[0006]

The front stand device for a two-wheeled vehicle according to the present invention solves the above problems and is as follows. That is, the front stand device for a two-wheeled vehicle according to the present invention is a front stand device for a two-wheeled vehicle that is provided in a hollow cylindrical down tube that is a part of a vehicle body frame, and is attached to the hollow part of the down tube so that it can be freely taken in and out. , A pedestal part that is fixed at a predetermined position of the down tube when it is taken in and out, a length adjustment part that is provided in the pedestal part via screwing means so that it can be freely taken in and out, and is attached to the lower end part of this length adjustment part. It consists of a foot that can rotate with respect to the length adjustment part.

[0007]

Therefore, according to the front stand device for a two-wheeled vehicle of the present invention, the pedestal portion is housed in the down tube and taken out of the down tube as required, and is fixed at a predetermined position of the down tube. Further, the length adjusting portion expands and contracts with respect to the pedestal portion via the screwing means.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A front stand device 1 for a two-wheeled motor vehicle according to the present invention will be described in detail below with reference to the accompanying drawings. In this embodiment, a case where the front stand device 1 for a motorcycle is applied to a motorcycle will be described. Figure 1
Is an overall side view showing a state in which the front stand device for a motorcycle according to the present invention is used, FIG. 2 is an enlarged perspective view of the front stand device for a motorcycle, FIG. 3 is a sectional view taken along line AA of FIG. Figure 4
FIG. 4 is an exploded perspective view of FIG. 3.

The motorcycle 2 has a body frame 4 extending forward and backward as a skeleton. The vehicle body frame 4 includes a main frame 10 that encloses the engine 8 and the like inside, and a seat rail frame 12 that extends rearward of the main frame 10.

The main frame 10 includes in its front part a hollow cylindrical down tube 14 extending rearward and downward from the rear side of the head pipe 12 as a part thereof. The down tube 14 is provided with a front stand device 1. The front stand device 1 is detachably attached to the hollow portion S of the down tube 14, and is a stand tube 16 as a pedestal portion that is fixed to a lower end portion 14a that is a predetermined position of the down tube when the tube is placed in and out; 16, an adjusting bolt 18 as a length adjusting portion that is provided so as to be freely taken in and out via a screwing means to be described later, and a foot that is attached to a lower end portion 20 of the adjusting bolt 18 and is rotatable with respect to the adjusting bolt 18. And a ground plate 22.

The stand tube 16 is attached to the attachment holes 24, 24 formed in the lower end portion 14a of the down tube 14 via a fixing means 15 including a bolt 15a and a nut 15b. The stand tube 16 is a hollow body having a substantially cylindrical shape, and is formed such that the outer diameter thereof is slightly smaller than the inner diameter of the down tube 14. Bifurcated support arms 16a and 16a and a thick-walled bottom plate portion 16b are formed at the upper end and the lower end, respectively.

Support holes 26, 26 for fixing the stand tube 16 to the down tube 14 via the fixing means 15 when the stand tube 16 is taken out from the down tube 14 are provided at the tip ends of the support arms 16a, 16a. There is. A screw hole 28 is formed in the bottom plate portion 16b.
The stand tube 16 and the adjusting bolt 18 are attached by screwing means 30 including a bolt portion 8 and a bolt portion of the adjusting bolt 18 described later.

The adjusting bolt 18 comprises a base 32 and a bolt portion 34 which is the bolt portion for constituting the screwing means 30. The base 32 has a bolt portion 34.
A shaft portion 34b described later is fixed through the shaft hole described later. The base 32 has a cylindrical shape, and an insertion hole 36 and a handle hole 38 are formed in the peripheral surface and upper and lower end surfaces thereof so as to intersect with each other. The insertion hole 36 is sized to accommodate, for example, a blade of a driver or a handle of a hex wrench (hexagonal wrench). The base 32 is formed to be slightly smaller than the stand tube 16. In addition, the blade of the driver,
In addition to the insertion hole 36, the bolt portion 34 can be inserted into a through hole described later.

The bolt portion 34 is composed of a male screw portion 34a and a shaft portion 34b whose tip is divided into two forks 39, 39. The through hole 3 is coaxial with the insertion hole 36 of the base 32 when the shaft portion 34b is inserted into the base 32.
5 is drilled.

The installation plate 22 has a shape like a so-called full cup. That is,
A through hole 40 having a diameter slightly larger than that of the shaft portion 34b is formed in the top plate 22a, and has a cross-sectional shape that widens toward the end. And the lower end opening edge 22b is
It has a flange shape slightly larger than the outer diameter of the down tube 14. The shaft portion 34b of the bolt portion 34 is inserted into the through hole 40, and then the forks 39 and 39 are caulked to connect the installation plate 22 and the adjustment bolt 18.

The engine mount plate 42 is for attaching the engine 8 to the down tube 14, and is attached to the screw hole 44 of the attachment boss 14b of the down tube 14 via a bolt 46. Note that reference numeral 48
Indicates a center stand. Further, reference numeral 14b is a notch formed at the lower end of the down tube 14, into which the front stand device 1 is attached by inserting a finger or the like.
It is for making it easy to pull out from 4.

The front stand device 1 for a motorcycle constructed as described above is assembled as follows.
First, after inserting the shaft portion 34a of the bolt portion 34 into the through hole 40 of the installation plate 22 from below or above,
9 and 39 are caulked to the side of the top plate 22a. After that, the shaft portion 34a of the bolt portion 34 is inserted into the handle hole 38 of the base 32, and then the base portion 32 is fixed by an appropriate fixing means such as welding.
Fix with a. As a result, the installation plate 12 is positioned between the forks 39, 39 and the base 32 via the shaft portion 34. At this time, since the through hole 40 of the top plate 22a is larger than the shaft portion 34, the installation plate 12 can rotate with respect to the shaft portion 34.

Next, the male screw portion 34a of the bolt portion 34 is engaged with the screw hole 28 of the bottom plate portion 16b of the stand tube 16 to assemble the adjusting bolt 18 having the installation plate 22 with the stand tube 16. As a result, the front stand device 1 of the motorcycle is formed.

In the front stand device 1 of the motorcycle as described above, the support holes 26, 26 of the support arms 16a, 16a or the insertion holes 36 of the base 32, which are formed in the upper and lower parts of the front stand device 1, respectively. Through hole 3 of shaft portion 34b
5, the down tube 14 is assembled by a fixing means including a bolt 15a and a nut 15b.

That is, when the front stand device 1 is assembled to the down tube 14 at its upper portion, the upper support arms 16a, 16a of the front stand device 1 are inserted into the down tube 14 and the lower end of the down tube 14 is inserted. Part 14
The support arms 16a, 16 are attached to the mounting holes 24, 24 formed in
The support holes 26, 26 of a are aligned. In this state, the bolt 15a is inserted through these holes 24, 24 and 26, 26 and fixed by screwing it with the nut 15b. At this time, the angle of the front stand device 1 with respect to the down tube 14 is appropriately determined so that the lower end opening edge 22b of the ground plate 22 is parallel to the ground. As a result, the front stand device 1 of the motorcycle is attached to the lower end of the down tube 14 in a substantially vertical state.

Next, when the front stand apparatus 1 is assembled to the down tube 14 at its lower portion, the front stand apparatus 1 is inserted into the down tube 14. At this time,
Since the outer diameters of the stand tube 16 and the base 32 are smaller than that of the down tube 14, and the installation plate 22 has a divergent shape in cross section, and the lower end opening edge 22b thereof is larger than the down tube 14,
The stand tube 16 is freely slid with respect to the down tube 14, but is not completely inserted into the down tube 14 by the opening edge 22a. Then, the lower end opening edge 22 of the stand tube 16
After inserting parts other than b into the down tube 14, attach the bolt 15a to the mounting holes 24, 24 of the down tube 14,
By inserting the insertion hole 36 of the base 32 and the through hole 35 of the bolt portion 34 coaxial with the insertion hole 36 and then screwing it with the nut 15b, the front stand device 1 is installed in the hollow portion S of the down tube 14. Stored and fixed.

Then, as described above, the down tube 1
The operation and effect of the front stand device 1 according to the present invention assembled in No. 4 will be described. Motorcycle front stand device 1
Is attached to the hollow portion S of the down tube 14 so that it can be freely taken in and out, and when it is taken in and out, it is fixed at the lower end portion 14a of the down tube.
It is housed in the down tube 14 and discharged out of the down tube 14 as needed. Therefore, since the front stand device 1 can be housed in the down tube 14 so that its presence cannot be known when not in use, the presence of the front stand device 1 does not adversely affect the outer shape of the motorcycle. it can.

The front stand device 1 is fixed to the down tube 14 via the stand tube 16, and the adjusting bolt 18 is a hole of each of the base 32 and the bolt 34 which is coaxial with each other, that is, is inserted. Hole 3
6 and the through hole 35 are inserted and rotated by inserting a blade of a driver (not shown) into and out of the stand tube 16 through the screwing means 30, and the ground plate 22 is rotated with respect to the stand tube 16. Since it is free, in order to maintain the front wheel and the front wheel periphery, if the front stand device 1 is taken out from the down tube 14 and the ground plate 22 is grounded, the adjusting bolt 18 is rotated by the blade of the driver or the like. Since the stand tube 16 moves up and down according to the rotation, the height of the front stand device 1 can be freely adjusted even during maintenance of the front wheels.

In this embodiment, the cutout 14b is provided at the lower end of the down tube 14, but the cutout 14b may be omitted. In this case,
Flange-shaped bottom opening edge 22 of ground plate 22
Since b and the lower end of the down tube 14 come into contact with each other, there is an effect that it becomes difficult for dust and rainwater to enter the down tube 14.

[0025]

According to the front stand device for a two-wheeled motor vehicle of the present invention, the pedestal portion is housed in the down tube as necessary, taken out of the down tube, and fixed at a predetermined position of the down tube. The part stand device can be made to be obscured when not in use. Therefore, it is possible to prevent the outer shape of the motorcycle from being adversely affected. Further, since the length adjusting portion expands and contracts with respect to the pedestal portion via the screwing means, the front stand device can freely change its entire length through the length adjusting portion even during maintenance of the front wheels.

[Brief description of drawings]

FIG. 1 is an overall side view of a front stand device for a motorcycle according to the present invention.

FIG. 2 is an enlarged perspective view of the same.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is an enlarged exploded perspective view of a front stand device for a motorcycle according to the present invention.

[Explanation of symbols]

 1 Front Stand Device 2 Motorcycle 4 Body Frame 14 Down Tube 14a Lower End of Down Tube 16 Pedestal 18 Length Adjusting Part 22 Pedestal 30 Screwing Means 34b Shaft S Hollow Part of Down Tube

Claims (1)

[Claims] 1. A front stand device for a motorcycle, which is provided in a hollow cylindrical down tube which is a part of a vehicle body frame, and which is mounted in a hollow portion of the down tube so as to be freely inserted into and taken out of the down tube. A pedestal part that is fixed in place, a length adjustment part that can be freely inserted into and removed from this pedestal part by screwing means, and is attached to the lower end part of this length adjustment part and is rotatable with respect to the length adjustment part A front stand device for a two-wheeled vehicle that consists of the pedestal of the vehicle.