JP2001106134A - Auxiliary stand for bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate storing and carrying with an auxiliary stand. SOLUTION: An auxiliary stand comprises a pair of right and left main frames 21, 22, a lower cross pipes 24, 25, and a shaft 23 and the like. The main frames 21, 22 are generally triangular in the side view and provided with a first boss portion 32 at an upper end portion thereof and second boss portions 34, 35 at a grounding portion 37. The lower cross pipes 24, 25 are disposed between the second boss portions 34, 35 and fastened by bolts 28, 29 to assemble an auxiliary stand 20 integrated with the right and left main frames 21, 22. A rear wheel is arranged between the right and left main frames 21, 22, and both ends of the shaft 23 passing through an axle shaft of the rear wheel are supported by the first boss portion 32 to park. During unused condition, the auxiliary stand 20 is compactly stored by disassembling the lower cross pipes 24, 25 to divide into right and left pieces.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary stand for a motorcycle which supports a rear wheel or the like when parking a motorcycle or the like.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. Hei 5-16850 discloses a pair of left and right main frames sandwiching a rear wheel of a motorcycle from both right and left sides, each of which is formed in a substantially V shape in side view. A motorcycle in which the frames are continuously and integrally connected, and the rear wheels are supported by inserting both ends of a shaft having a rear wheel axle through a boss provided at the upper end of each main frame. Auxiliary stand is shown.

Japanese Patent Application Laid-Open No. 2-147483 discloses a similar motorcycle auxiliary stand in which the left and right main frames are substantially L-shaped in a side view. At each upper end of the main frame, the rear swing arm of the motorcycle is supported, and a roller is provided at the bent portion, and the auxiliary stand is attached and detached while rotating the main frame with this roller as a fulcrum. I have.

[0004]

In each of the above-mentioned prior art examples, the left and right main frames are integrally formed as a whole continuous with one end of the grounding portion. For this reason, the storage space when not in use requires a relatively large volume, and it has to be hard to secure a storage space. Moreover, it is not easy to carry such a relatively large auxiliary stand with the vehicle. Then, this invention aims at solving these problems.

[0005]

In order to solve the above-mentioned problems, an auxiliary stand for a two-wheeled vehicle according to the present invention has a pair of left and right main frames arranged on both left and right sides of the vehicle, and supports provided at upper ends thereof. In the auxiliary stand for a two-wheeled vehicle adapted to support a vehicle, the left and right main frames are formed separately from each other, and a grounding portion and a column extending from one end of the grounding portion and extending toward the support portion. The main body is provided, and the left and right main frames are detachably connected to each other by detachably connecting the grounding portions of the left and right main frames with a lower cross member.

[0006]

The left and right main frames are formed separately, and the respective grounding portions are connected by a lower cross member, so that they can be assembled and used as an integral auxiliary stand. On the other hand, when not in use, since the left and right main frames are separate bodies and the lower cross member is detachable, the left and right main frames can be separated by removing them.
Therefore, since it can be disassembled and compactly stored, it is easy to secure a storage space and to carry it with a vehicle.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described below with reference to the drawings. 1 to 6 relate to the first embodiment, FIG. 1 is an exploded perspective view of an auxiliary stand, FIG. 2 is a side view of a motorcycle in a used state, and FIG. 3 is a plan view of the auxiliary stand in an assembled state. FIG. 4 is a partial cross-sectional view of the lower cross member. FIG. 5 is a cross-sectional view taken along line 5-5 of FIG.
FIG.

First, in FIG. 2, the motorcycle includes a backbone-type main pipe 1 disposed in the front-rear direction along the center of the vehicle body, and a rear end thereof is connected to a pivot frame 2. A front end of a rear swing arm 3 is swingably connected to the pivot frame 2 by a pivot 4, and a rear wheel 5 is rotatably supported at a rear end of the rear swing arm 3.

A driven sprocket 6 is provided on a side surface of the rear wheel 5 and is connected to a driving sprocket 8 provided in an air-cooled four-cycle engine 7 via a chain 9 to drive the rear wheel 5. ing. Reference numeral 10 denotes a rear cushion unit, which is mounted between a vicinity of a connection portion between a seat rail 11 extending rearward from the main pipe 1 and a rear pipe 12 extending obliquely upward behind the engine 7 and a rear swing arm.

Further, reference numeral 13 is a seat, 14 is a fuel tank, 15 is a handle, 16 is a head pipe, 17 is a front fork, 18 is a front wheel, and 19 is from the front of the engine 7 to the rear pipe 12 passing therebelow. It is a lower pipe. Reference numeral 20 denotes an auxiliary stand, by which the vehicle can be parked in an upright state.

Next, the auxiliary stand 20 will be described. As shown in FIG. 1 and FIG.
Is a pair of left and right main frames 2 having a substantially triangular shape in side view.
A shaft 23 supported between the upper ends of the main frames 21 and 22, and a pair of front and rear lower cross pipes 24 and 25 connecting between the lower portions of the main frames 21 and 22.
Is provided. The shaft 23 is an example of a vehicle support member in the present invention, and the lower cross pipes 24 and 25 are examples of a lower cross member.

One main frame 21 has a curved pipe 30 substantially V-shaped in side view and a curved pipe 3 which is thinner and curved.
0 is formed in a substantially triangular shape in a side view by a linear auxiliary pipe 31 connecting between the ends of both arms that expand. The auxiliary pipe 31 corresponds to a rear hypotenuse portion which is a rear side in use of the two hypotenuses of this triangle, and a front hypotenuse portion which is a front side in use of the other is a column which is a part of the curved pipe 30. The main body 38 corresponds to the main body.

The other arm constituting the curved pipe 30 together with the support body 38 serves as a grounding part 37 which is grounded during use. The ground portion 37 corresponds to the base of the triangle formed by the main frame 21. The connecting portion between the grounding portion 37 of the curved pipe 30 and the column main body portion 38 forms a bent portion 36 which is bent.
And the column body 38 are connected integrally in a continuous curve.

A cylindrical first boss portion 32 is provided at a portion corresponding to a vertex of the triangle formed by the main frame 21. The first boss portion 32 is composed of the auxiliary pipe 31 and the support body 3.
8 are connected to each other by a patch plate 33 welded near the first boss 32 between the auxiliary pipe 31 and each of the upper ends of the column main body 38 and reinforced.

The ground height of the first boss 32 is set to such an extent that the rear wheel 5 can be slightly lifted off the ground and supported. First
The boss part 32 is located above the middle part in the longitudinal direction of the ground part 37, and the ground part 37 is the first part in the triangle of the main frame 21.
Cylindrical second bosses 34 and 35 are welded to form opposite sides of the boss 32 and are spaced apart in the front-rear direction.

On the other hand, another main frame 22
The first and second boss portions 32 and the second boss portions 34 and 35 are arranged on the same axis during assembly. Since the components of the main frame 22 are the same as those of the main frame 21, the reference numerals of the main frame 21 are used in common.

Lower cross pipes 24 and 25 are detachably connected between the left and right second boss portions 34 and 35, respectively. Nuts 26 and 27 are provided at the left and right ends of the lower cross pipes 24 and 25, respectively.
It is configured to be fastened by bolts 28 and 29 inserted into the holes 4 and 35.

The length of the lower cross pipes 24, 25 is
The width of the rear portion of the vehicle body including the rear wheel 5 and the left and right rear swing arms 3 is set to be about the width of the rear portion of the vehicle so that the rear portion of the vehicle body can be disposed between the left and right main frames 21 and 22. When the rear width of the vehicle body changes due to different models, the lower cross pipes 24 and 25 having the optimal dimensions for each model are used.

The shaft 23 has a main body 40. The main body 40 can be inserted into the holes of the left and right first bosses 32, 32, and has a thickness and length penetrating a hollow rear wheel axle 61 (FIG. 3). Having One end of the main body 40 penetrates a collar 42 with a flange 41 to form a protruding end 43, where the collar 42
Welded to The outer diameter of the collar 42 is the first boss 32
Is larger than the hole diameter of the collar 42 when the main body 40 is inserted.
Is in contact with one end of one of the first boss portions 32 (in this embodiment, the first boss portion 32 on the main frame 22 side) to form a stopper.

The other end of the main body 40 is connected to the other first boss 3
2 (first boss 32 on main frame 21 side in this embodiment)
And a pin hole 45 is formed in the protruding end 44 thereof in the direction perpendicular to the axis. The split pin 46 is attached to the pin hole 45 to prevent the pin hole 45 from coming off. From getting out of carelessly.

As shown in FIG. 4 and FIG.
Is welded to both longitudinal ends of the main body pipe 50 of the lower cross pipe 24, and a screw portion 51 is provided at the axial center thereof so that it can be connected to the bolt 28. Also, the nut 26
Is formed on the outer peripheral surface thereof so as to be partially flattened. When the bolt 28 is fastened, the lower cross pipe 24 is prevented from rotating by clamping the bolt 28 with a tool. Has become. The lower cross pipe 25 has the same structure as that of the lower cross pipe 24.

Next, the operation of this embodiment will be described. First,
As shown in FIG. 1, lower cross pipes 24 and 25 are arranged between left and right second boss portions 34 and 35, and each second boss portion 3
If the nuts 26 and 27 are fastened to the nuts 26 and 27 from outside through bolts 28 and 29, the left and right main frames 21 and 22
The auxiliary stand 20 in which is firmly connected and integrated is assembled.

Then, the auxiliary stand 20 is tilted so that the ground portion 37 separates from the ground and the bent portion 36 faces downward as shown by a virtual line in FIG. The frames 21 and 22 sandwich the left and right side surfaces of the rear wheel 5, and the first boss portion 32 is aligned with a rear wheel axle 61 (FIG. 3) penetrating the hub 60 (FIG. 6) of the rear wheel 5. The body portion 40 of the shaft 23 inserted into the first boss portion 32 of the frame 22 is passed through the hollow portion of the rear wheel axle 61, and the protruding end portion 44 is protruded from the first boss portion 32 of the main frame 21 so that the pin hole 45 is formed. Insert the split pin 46 to prevent it from falling off.

In this state, the grounding portion 37 of the auxiliary stand 20
When the auxiliary stand 20 is pressed toward the ground, the auxiliary stand 20 rotates about the bent portion 36 as a fulcrum, and as shown by a solid line in FIG.
When the ground touches the ground, the first left and right
The rear wheel 5 supported between the bosses 32 is slightly lifted off the ground, and can be parked in this state (see FIG. 2).

When the auxiliary stand 20 is not used,
If the lower cross pipes 24 and 25 are separated by removing them from the vehicle body in the reverse order and then removing the bolts 28 and 29, the left and right main frames 21 and 22 are separated, and the whole can be compactly packed and housed in an appropriate container or the like. become.

Therefore, the left and right main frames 21, 22
Are constructed separately and the lower cross pipes 24 and 25 are detachably attached to them, so that the auxiliary stand 20 can be integrally assembled when used, and can be constructed compactly by disassembling when not in use. Because it can be stored, it is easy to secure storage space,
Also, it is easy to carry the vehicle. In addition, since different models can be handled simply by changing the length of the lower cross pipes 24 and 25, the versatility is relatively high.

Furthermore, since the rear wheel 5 is supported between the first left and right boss portions 32 by a single shaft 23 using the hollow rear wheel axle 61, the number of parts can be reduced and the body is painted. Work is easy because it can be supported without contact with the surface.
In addition, since the work can be performed with the bent portion 36 as a fulcrum when the auxiliary stand 20 is attached or detached, lifting of the vehicle body or the like becomes easy, and attachment and detachment of the auxiliary stand 20 becomes easy. Nut part 2
Since the detent portions 52 are provided on the bolts 6 and 27,
The attachment / detachment of the attachment / detachment 29 becomes reliable and easy, and the workability is also improved in this respect.

FIG. 7 relates to a second embodiment. This embodiment is different from the previous embodiment only in that an attachment 70 which is another example of the vehicle support member of the present invention is provided in place of the shaft 23 in the previous embodiment. In this figure, the lower cross pipe 2
4 and 25 and the main frame 21 are not shown. As shown in this drawing, the attachment 70 has a substantially L-shape, and a contact portion 71 which contacts the lower surface of the rear end portion of the rear swing arm 3 is bent substantially horizontally toward the inside of the vehicle body and extends below the attachment 70. I have.

The vertical wall portion 72 disposed in the vertical direction is provided with a bolt through hole (not shown in the drawing), and a nut 7
3 are welded. The attachment 70 is integrally attached to the first boss 32 by stacking the vertical wall 72 on the inside of the first boss 32, aligning a nut 73 with the hole, and fastening the bolt 73 from the outside. The attachment 70 is similarly attached to the main frame 21 toward the inside of the vehicle body.

The auxiliary stand 20 constructed as described above
The vehicle can be parked by contacting the contact portion 71 of the left and right attachments 70 with the lower surfaces of the rear ends of the left and right rear swing arms 3 to ground the contact portion 37. Therefore, parking is possible even for a model that does not use a hollow rear wheel axle. Moreover, in this case, since the rear wheels 5 are not supported by using the rear wheel axle, the rear wheels 5 can be attached and detached during parking, and tire replacement or the like becomes possible.

The present invention is not limited to the above-described embodiment, but can be variously modified. For example, the lower cross member is not a pipe like the lower cross pipes 24 and 25 but a plate-like cross plate. be able to. Further, the number of lower cross members and the number of second boss portions can be one or more. Furthermore, the first boss portion 32 as a support portion for the vehicle and the second boss portions 34 and 35 as attachment portions for the lower cross member are not necessarily provided, and an appropriate support structure or attachment structure in place of them is provided. Can be adopted. Besides, this auxiliary stand 2
0 is applicable not only to motorcycles but also to bicycles.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an auxiliary stand according to a first embodiment.

FIG. 2 is a side view of the motorcycle in a state of use.

FIG. 3 is a plan view of an auxiliary stand in an assembled state.

FIG. 4 is a view showing a lower cross member in a partial cross section.

FIG. 5 is a sectional view taken along line 5-5 of FIG. 4;

FIG. 6 is an explanatory diagram of use.

FIG. 7 is a perspective view of a main part according to a second embodiment.

[Explanation of symbols]

3: Rear swing arm, 5: Rear wheel, 20: Auxiliary stand, 21: Main frame, 22: Main frame, 23: Shaft, 24: Lower cross pipe, 25: Lower cross pipe, 26: Nut, 27: Nut Part 32: First
Boss part, 34: second boss part, 35: second boss part, 37:
Grounding part, 38: pillar main body part, 52: detent part, 70:
attachment

Claims (2)

[Claims] 1. An auxiliary stand for a two-wheeled vehicle in which main frames are arranged in a pair on the left and right sides on both sides of a vehicle, and a support portion provided at each upper end thereof supports the vehicle. A grounding portion and a column main body that is bent from one end of the grounding portion and extends toward the support portion, and the grounding portions of the left and right main frames are detachably attached with a lower cross member. An auxiliary stand for a two-wheeled vehicle, wherein the left and right main frames are detachably connected to each other to be integrally assembled by being connected. 2. The vehicle system according to claim 1, wherein the left and right main frames each have a substantially triangular shape in a side view, and each of the main frames has a first boss portion serving as the support portion at a portion corresponding to one vertex of the triangle. The member is supported, and a portion corresponding to one of the hypotenuses is defined as the column main body, and a bottom corresponding portion, which is a portion opposed to the support, is defined as the grounding portion. 2. The two-wheel auxiliary vehicle according to claim 1, wherein second boss portions are provided so as to be on the same axis during assembly, and the lower cross member is fastened to these left and right second boss portions with bolts. 3. stand.