JPS5819107Y2 - Anti-vibration handle for motorcycles - Google Patents

Description

[Detailed description of the invention] This invention aims to improve the maneuverability of two-wheeled vehicles such as motorcycles by reducing as much as possible the resonance of the handlebars (especially the grips at both ends of the handlebars) caused by the transmission of engine vibrations and running vibrations. With the goal.

As a vibration-proofing means for the above-mentioned handle, the present applicant had previously proposed a dynamic damper-type vibration-proofing handle (in 1983).
4-56851).

That is, as shown schematically in FIG. 6, damper weights (
Weight rod) 2 with damper rubber (vibration isolating rubber) 3 at both ends.
, 3, and is built in so that it is held floating (floating support), and the vibration of the handle 1 is reduced by the vibration absorbing effect of the floating weight 2.

The present invention aims to increase the vibration damping force by further combining this dynamic damper with an external weight, and also improves the ease of assembling by adding some ingenuity to the assembly of both weights.

That is, as shown in the example in Fig. 1, a 70-inch weight 2 is provided inside the end of the one-stroke bundle pipe 1, and an outer end weight 4 is provided at the end of the same pipe 1. The end of the weight 2 is held floating on the pipe 1 via a damper rubber 31, and the end of the pipe tip of the weight 2 is held floating in the damper rubber 32 fitted into the inner end face recess 42 of the outer end weight 4 to prevent it from coming out. The outer end weight 4 is essentially a vibration-proof handle for a two-wheeled vehicle, which is fixed and held at the end of a pipe.

Reference numeral 5 indicates an accelerator sleeve rotatably fitted onto the outer periphery of the end of the handle pipe 1, 6 a grip rubber fixed to the outer periphery of the sleeve, and 7 a control switch box for lights, etc.

In the illustrated example, the tamper weight 2 has an outer diameter smaller than the inner diameter of the pipe 1, has approximately the same length as the grip rubber 6, and has small diameter shaft portions 21 and 22 formed at the center of each end surface. A round bar made of heavy material such as iron was used.

Also, as the outer end weight 4, the outer diameter of the bottom surface 41 is made approximately the same as the outer diameter of the end of the grip rubber 6, and the circumferential surface is set outward by 1'P.
-'P is a block made of heavy material such as iron and has a substantially truncated conical shape, and has a recess 42 formed in the center of its bottom surface 41, and extends the opening of the recess 42 outward to form a handle pipe 1. A male screw tube 43 is formed to be screwed into the female screw 11 cut on the inner peripheral surface of the end opening, and the tip edge of the O-shaped tube 43 is slightly bent inward as a flange seat 44 to prevent the rubber 32 from slipping out. I used something.

The procedure for assembling the damper weight 2 and the outer end sear 4140 to the handle pipe 1 will be explained.

The damper rubber 32 is inserted into the bottom recess 42 of the outer end weight 4 by fully pushing it against elasticity until it is stopped by the collar seat 44.

The protruding shaft 22 at one end of the damper weight 2 is sufficiently inserted into the solid bearing hole of the fitted rubber 32 against the elasticity of the rubber 32 to be retained therein.

Before removing the shaft 22 from the rubber 32, for example, as shown in the illustration, a head 2 with a slightly larger diameter than the diameter of the shaft 22 is attached to the tip of the shaft 22.
3 should be formed.

Alternatively, first attach the damper lever 32 to the shaft 22 of the damper weight 2.
After fitting the rubber 32 into the recess 42 of the outer end weight 4, the damper weight 2 is inserted by pushing it sufficiently into the recess 42 of the outer end weight 4 against the elasticity of the rubber 32 until it is removed by the flange 44.
The outer end weights 4 and the outer end weights 4 and 32 are connected to each other by being pulled out from each other.

A damper rubber 31 having an outer diameter that is the same as or somewhat larger than the inner diameter of the handle pipe 1 is fitted onto the other protruding shaft 21 of the damper weight 2.

In this case as well, the head 24 is formed at the tip of the shaft 21, and the rubber 31 is pulled out and held back.

After connecting and assembling both the weights 2 and 4, connect the outer end of the damper weight 2 to the handle pipe 1. Align the damper weight 2 with the end opening of the pipe and push the damper weight 2 into the pipe 1 sufficiently until the male threaded cylinder 43 of the outer end weight 4 hits the pipe opening, then turn the outer end unit 1 4 and insert the male threaded cylinder 43 into the pipe. The assembly is completed by inserting the outer end weight 4 into the female thread 11 on the inner surface of the opening and attaching it to the end of the pipe.

2 and 3 and 4 and 5 show modified examples of the connecting portion between both weights 2.4. FIG. Then, as shown in FIG. 1, the tip edge of the male tube 43 is made of rubber and used as a flange seat 44 so that the entire length of the tube 43 has the same inner diameter as the recess 42 without bending inward. It is equipped with a nut-shaped flange 45 for removing the old rubber, which is screwed into the rubber 3.
The 2nd nuki is to make a torme, and its nut-shaped tsuba lI
45 is screwed onto the h-piece 11 on the side of the handle pipe 1, so that the outer end weight 4 can be removed from the pipe 1 and held.

In addition, in the example shown in FIGS. 4 and 5, a plurality of protrusions 46 are provided at approximately equal intervals on the tip edge of the male thread cylinder 43 instead of the flange 44 in FIG. 1 or the nut-shaped flange 45 in FIG. 2. Rubber 3
2 from the recess 42 is prevented from becoming obsolete.

As described above, the present invention combines the dynamic damper 2 with the outer end weight 4, thereby reducing the
・It is possible to effectively damp the steering wheel resonance and the increase in handle vibration caused by rapid high-speed rotation, and it is also possible to effectively suppress secondary vibrations, which had less damping force with the dynamic damper 2.

The assembly of the dynamic damper 2 and the outer end weight 4 to the handle pipe 1 is structured such that the back end of the damper weight 2 is held floating on the pipe 1 via the damper rubber 31, and the other end of the weight 2 is held floating on the pipe 1 via the damper rubber 31. On the side, the damper rubber 32, which is inserted into the inner concave part of the outer end weight 4, is held floating by the damper rubber 32.The outer end weight 4 is held at the end of the handle pipe, so the damper weight 2 is held. The weights 2.4 can be easily and accurately positioned in the pipe, and their positions can be maintained at all times, and both weights 2.4 can be easily assembled to the pipe 1.

Although it is known that attaching an outer end weight 4 to the end of the steering wheel pipe 1 to reduce steering wheel vibration, there is no example of it being used in combination with the dynamic damper 2, and the present proposal is based on the synergistic effect of the combination of the two. This effectively damps the vibrations of the handle.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of one embodiment of the present invention, Fig. 2 is a longitudinal cross-sectional view of the main part of a modified example, Fig. 3 is a slope view of the nut-shaped rubber holder and the tsuba, and Fig. 4 is the other side. FIG. 5 is a cross-sectional view taken along the line V-V in FIG. 4, and FIG. 6 is a diagram of the dynamic damper. 3.31.32 is a damper rubber, 5 is a rotating sleeve for the accelerator, 6 is a grip rubber, and 7 is a switch box.

Claims (1)

[Scope of utility model registration request] A floating damper weight 2 is provided inside the end of the handle pipe 1, and an outer end weight 4 is provided at the end of the handle pipe 1, and the end of the damper weight 2 on the back side of the pipe is connected to the pipe 1 via a damper rubber 31. The pipe tip side end of the weight 2 is held floating by the damper rubber 32 fitted into the inner recess 42 of the outer end weight 4 to prevent it from being removed, and the outer end weight 4 is held by the handle pipe. Anti-vibration handle for two-wheeled vehicles, with a non-removable handle at the end.