JPH0751430Y2 - Front mudguard mounting structure for motorcycles - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a front mudguard mounting structure for a motorcycle.

[Conventional technology]

As shown in FIG. 4, the front hawk of the motorcycle has a pair of left and right inner tubes B at the bottom of the left and right outer tubes A.
There is one in which an axle E rotatably supporting a front wheel D is attached to an axle bracket C provided at the lower ends of the inner tubes B on the left and right so as to be able to slide and expand and contract. As described above, the front fork having the inner tube B slidably attached to the lower side is called an inverted type, and has an advantage that the unsprung weight is light and the cushioning performance is improved. In this case, the caliper G of the disc brake F of the front wheel D is attached to the axle bracket C, and the stay J of the front mudguard H is attached to the axle bracket C.

[Problems to be solved by the device]

If the front wheel D should be repaired by causing a flat tire, pull out the axle E from the axle bracket C and remove the front wheel D.
To the bottom. At this time, since the caliper G hits and cannot be removed as it is, it is necessary to rotate the inner tube B to move the caliper G to the outside. In order to rotate the inner tube B, it is necessary to remove the stay J of the front mudguard H from the axle bracket C, and it is inconvenient to attach and detach the front wheel D. If the front mudguard H is attached to the outer tube A, the front wheel D can be attached and detached without removing the front mudguard H, but the front wheel D is attached so as not to hit the front mudguard H when the inner tube B is at the highest pressure cushion. Therefore, the mounting position of the front mudguard H becomes high and the front wheel D
The gap between and becomes large, and the mudguarding effect is reduced.

In consideration of this point, the present invention attaches the front mudguard to the axle bracket of the inner tube, and with the front mudguard attached, the inner tube can be rotated, the caliper can be moved outside, and the front wheel can be attached and detached. It is an object of the present invention to obtain a front mudguard mounting structure for a motorcycle that can be easily attached and detached.

This invention is to achieve the above-mentioned object,
It looks like this: That is, the present invention is directed to a brake disc at the lower end of the inner tube of the inverted front hawk, which includes left and right outer tubes and left and right inner tubes slidably and rotatably fitted to the lower ends of the outer tubes. It is a front mud attachment structure that is attached to the front wheel of a motorcycle that is detachably supported via an axle bracket to which a caliper that brakes is attached. And a ring-shaped metal fitting having an annular portion formed by bending both ends of the annular portion in a radial direction of the annular shape, the ring fitting is directly attached to the circumferential groove provided on the axle bracket. It is fitted and rotatably attached, and the plate-shaped stay extending downward from the mudguard is sandwiched by the plate-shaped collar portion, and the plate-shaped collar portion and the stay are joined together. Bolt fastened from the vehicle perpendicular direction at the rear position of the cement fork lies before mudguard mounting structure for a motorcycle comprising.

[Action]

When removing the front wheel, remove the axle from the axle bracket, rotate the inner tube slightly, move the caliper out, and remove the front wheel downward. Since the ring fitting inserted in the circumferential groove of the inner tube is freely rotatable, the front wheel can be removed while the front mudguard is attached, and the attachment / detachment is simplified.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

The front hawk F is mounted so that the upper parts of the left and right outer tubes 1 can be pivoted to the front ends of the frame 3 by the upper and lower brackets 2 so as to be steered, and the left and right inner tubes 4 can be attached to the lower parts of the left and right outer tubes 1. It is an inverted front fork that is inserted by sliding so that it can be expanded and contracted. Axle brackets 5 are connected to the lower ends of the left and right inner tubes 4 to connect the axle brackets 5,
Mount the axle 7 that rotatably supports the front wheel 6. Front wheel 6
The disc brake 8 is mounted on one side of the disc brake 8, and the caliper 9 of the disc brake 8 is attached to the stay 10 of the axle bracket 5. Thus, the present invention forms the circumferential groove 11 in the upper portion of the left and right axle brackets 5. The circumferential groove 11 has an annular portion 12a formed by annularly forming both ends of the strip material and plate-like flange portions 12b and 12b formed by bending both ends of the annular portion 12a in the annular radial direction. The ring metal fitting 12 that is provided is inserted, and the ring metal fitting 12 is directly fitted so as to be rotatable in the circumferential groove 11. And ring fittings
The plate-shaped stays 12b and 12b are provided to extend the mudguard downward to support the front mudguard 13 on the vehicle body.
The tip end of 14 is gripped so as to be grasped, and then the stay 14 and the plate-like brim portions 12b and 12b are fastened from the direction perpendicular to the vehicle with bolts 15a and nuts 15b. Since the ring fitting 12 is a ring body whose shape is partly split, it becomes elastic when the diameter thereof is expanded. Therefore, if the diameters of the ring fitting 12 and the circumferential groove 11 are set in advance so that the ring fitting 12 has elasticity when the ring fitting 12 is fitted into the circumferential groove 11, the ring fitting 12 is fitted into the circumferential groove 11. Only by this elasticity, the ring fitting 12 cannot be removed from the axle bracket 5. Therefore, it is possible to temporarily attach the bolts 15a and nuts 15b before tightening them, so
It will be easier to actually attach the to the axle bracket 5 with the bolt 15a and the nut 15b. Conversely, loosen the bolt 15a and nut 15b of the ring fitting 12 that
Since the state in which the bolt 15a is attached to the axle bracket 5 can be maintained, the inner tube 4 can be rotated with respect to the ring fitting 12 with the bolt 15a and the like attached to the ring fitting 12. Therefore, the caliper 9 which is integrated with the inner tube 4 via the axle bracket 5 can also rotate together with the inner tube 4. Therefore, since the caliper 9 can be rotated without removing the front mudguard 13, when removing the front wheel 6, the stay 14 of the front mudguard 13 is attached to the axle bracket 5 as in the prior art.
There is no need to remove it from.

In addition, since the ring fitting 12 is directly fitted into the circumferential groove 11 and no intermediate material such as an O-ring is interposed, the inner tube 4 is rotated with respect to the ring fitting 12 when the inner tube 4 is rotated.
An intermediate material such as a ring does not act as a resistance and the rotation of the inner tube 4 is not hindered. Therefore, by simply loosening the bolts 15a and nuts 15b of the ring fitting 12, the inner tube 4 can be rotated more easily with respect to the ring fitting 12, and the work efficiency can be improved.

Furthermore, since the plate-like collar portions 12b and 12b and the stay 14 are bolted at a position rearward of the front fork F from the direction perpendicular to the vehicle, it is possible to reduce the adhesion of scattered mud from the front wheels and to assemble them. Work is easy.

Then, the plate-shaped collar portions 12b and 12b of the ring fitting 12 are used to prevent the front mud 13
Since the tip of a plate-like stay 14 that extends downward from the above and supports the mudguard 13 to the vehicle body is sandwiched, the plate-like collar portions 12b, 12b
Since the plate stay 14 and the plate stay 14 are aligned in the plate thickness direction, the dimension in the vehicle width direction can be suppressed. Further, the annular portion 12a can be rotated with respect to the circumferential groove 11 even if the above three members are tightly tightened.

[Effect of device]

As described above, since the present invention is configured as described above, the inner groove of the axle shaft of the inner tube,
The front metal can be attached and detached without removing the front mudguard by rotating the space between the ring fittings with the front mudguard stays attached, making it easy to attach and detach the front wheels. Further, the front mudguard can be arranged close to the outer periphery of the front wheel, and the mudguard effect is great.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention, FIG. 1 is an enlarged side view of a main part, FIG. 2 is an exploded perspective view of the same, FIG. 3 is a side view, and FIG. 4 is a conventional example. FIG. 1 ... Outer tube, 4 ... Inner tube, 5
…… Axle bracket, 6 …… Front wheel, 7 …… Axle, 9
...... Caliper, 11 ...... circumferential groove, 12 ...... ring fitting, 12a
…… Annular part, 12b …… Plate-shaped collar part, 13 …… Front mud guard, 14…
... plate stays, 15a ... bolts, 15b ... nuts.

Claims (1)

[Scope of utility model registration request] 1. A brake disc is provided at a lower end portion of the inner tube of an inverted front hawk including left and right outer tubes and left and right inner tubes slidably and rotatably fitted to lower end portions of the outer tubes. It is a mounting structure for a front mudguard attached to the front wheel of a motorcycle that is detachably supported via an axle bracket to which a caliper to be braked is attached, and a band plate material is formed into an annular shape without joining both ends thereof. By directly fitting the annular portion of the ring metal fitting having the annular portion and the plate-shaped brim portion formed by bending both ends of the annular portion in the radial direction of the annular portion into the circumferential groove provided in the axle bracket. The plate-like stay extending downward from the mudguard is sandwiched between the plate-like flanges, and the plate-like flange and the stay are joined together in a front fork. Before mudguard mounting structure for a motorcycle which is formed by a bolt fastened from the vehicle perpendicular direction at the rear position.