JPH0728073Y2 - Motorcycle handle structure - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Field of Industrial Application) The present invention relates to a handlebar structure for a motorcycle.

(Prior Art) A so-called front fork direct-coupling type handle is used for a motorcycle (motorcycle), particularly a motorcycle such as a sports model which is a replica of a racer. A conventional example of this type is shown in FIG. A handlebar boss 2 is attached to a pipe-shaped front fork 1. This handlebar boss 2 has a front fork 1
An insertion opening 3 for inserting and inserting a pipe-shaped handlebar 4 is provided. A female screw is formed on the inner wall of the opening 5, and the handle bar 4
A male screw is formed on the outer circumference at the base end of the. The handle bar 4 is fixed to the handle bar boss 2 by screwing a male screw into these female screws. A lever holder 6 for a clutch lever is attached to the outside of the handlebar 4, and a clutch lever 8 is attached to a lever holder boss 7 of the lever holder 6. Thus, the clutch lever 8 is attached to the lever holder 6, and the clutch wire (not shown) is attached to the clutch lever 8. A switch case 9 provided with switches such as a winker and a horn is further attached to the outside of the handlebar 4. A handle grip rubber 10 is attached to the handle bar 4.

A weight 11 is inserted inside the pipe-shaped handlebar 4 to reduce vibration. The weight 11 is composed of a plurality of ring-shaped lead weights.
Is sandwiched between the weight cap 12 and the nut 14, and is fixed by the weight screw 13 screwed to the weight cap 12 and the nut 14.

[Problems to be solved by the device]

However, the above-mentioned conventional technique has a problem that the number of parts is large and therefore assembly is troublesome. Further, in general, the handlebar is made of a forged aluminum product and the weight is made of lead, and the handlebar boss is a light alloy forged product or a die cast product. For this reason, the material cost, the forging die cost, and the processing cost for processing a large number of parts are high, which causes an increase in the cost as a whole.

The present invention is made in consideration of such points,
It is an object of the present invention to provide a motorcycle handlebar structure that can reduce the number of parts and facilitate assembly, and at the same time obtain an inexpensive handlebar.

[Constitution of device]

(Means for Solving the Problems) The present invention is a handlebar boss that is inserted into a front fork and has an opening that is substantially orthogonal to the front fork,
An iron-based handlebar inserted into the opening,
A handlebar structure of a motorcycle characterized in that the handlebar is fixed to the handlebar boss by a fastening nut provided at a base end, and at least a distal end side is made thick to form a handle weight portion.

(Operation) By causing the handlebar itself to function as a weight, the conventional weight provided separately is not required, and the number of parts can be reduced, thus facilitating the assembling. At the same time, the cost can be reduced because it is enough to process one iron-based handlebar.

(Embodiment) An embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a plan sectional view of a motorcycle handlebar structure according to the present invention, and FIG. 2 is a perspective view thereof. The same parts as those in the prior art are designated by the same reference numerals and detailed description thereof will be omitted.

In FIGS. 1 and 2, a handlebar boss 2 made of A1 material is attached to a pipe-shaped front fork 1 at an insertion opening 3 for the front fork 1. The handlebar boss 2 is substantially U-shaped with the insertion port 3 as a center, and has handlebar openings 5 substantially orthogonal to the front fork 1 at both U-shaped tip portions. A female screw is formed on the inner wall of the opening 5. A male screw formed on the outer periphery of the base end of the handle bar 4 is screwed into the female screw.

At the same time, the fastening nut 4a is screwed onto the proximal end of the handlebar 4 protruding from the opening 4 through the washer 4b, whereby the handlebar 4 is securely fastened to the handlebar boss 2. As shown in FIG. 1, the handlebar 4 has a gradually increasing diameter in the order of a base end portion, a central portion, and a terminal portion, and becomes thick. As a result, the rotational moment of the handlebar 4 about the front fork 1 is increased, vibration can be prevented, and at the same time operability can be improved.

A lever holder 6, a switch case 9, and a handle grip rubber 10 are attached to the handle bar 4 thus fastened as in the conventional case. In this embodiment, the handle bar 4 is solid and the outer surface of the end portion is curved. Therefore, it is not necessary to attach the weight cap 12 to the end unlike the conventional case.

In this embodiment, the handle bar 4 is shown as a solid one, but in other embodiments, it may be hollow as in the conventional case. Even in this case, the handle weight portion can be formed by increasing the thickness on the distal end side. When the handlebar 4 is hollow, a cap is required to prevent the handlebar 4 from opening on the terminal side.

[Effect of device]

As described above, according to the present invention, by forming the handle weight portion by making the distal end side of the handlebar thick, it is not necessary to provide a separate weight as in the conventional case, and the number of parts can be reduced. Therefore, the assembly becomes easy. Also, by processing one handle bar, you can waste parts and save time and effort,
The overall cost can be reduced.

[Brief description of drawings]

1 is a vertical cross-sectional plan view showing an embodiment of a motorcycle handlebar structure according to the present invention, FIG. 2 is a perspective view of the handlebar structure shown in FIG. 1, and FIG. 3 is an exploded perspective view showing a conventional motorcycle handlebar structure. It is a figure. 1 ... Front fork, 2 ... Handlebar boss, 4
…… Handle bar, 6 …… Lever holder, 8 …… Clutch lever, 9 …… Switch case, 10 …… Handle grip rubber, 11 …… Weight, 13 …… Weight screw.

Claims (1)

[Scope of utility model registration request] 1. A handlebar boss which is inserted into a front fork and has an opening which is substantially orthogonal to the front fork, and an iron-based handlebar which is inserted into the opening, the handlebar being provided at a base end thereof. A handlebar structure for a motorcycle, characterized in that the handlebar boss is fixed to the handlebar boss by a provided fastening nut, and at least a distal end side is thickened to form a handleweight portion.