JPH0211485A - Vibration isolating mounting structure for handle for vehicle - Google Patents

Abstract

PURPOSE:To perform reliable vibration isolating mounting by a method wherein a cylinder part in which a tube mounted to the base end of a separate handle is inserted is nipped through a resilient member between a protrusion part formed on the tube of a front fork and a handle crown in which the tube is inserted. CONSTITUTION:In the handle of a vehicle, for example, a motor bicycle, a handle crown 4 is secured to the upper end of a handle shaft 3 by means of a bolt 5. An inner tube 6 with which a front fork is formed is inserted from below in an insertion hole 7 of the handle crown 4 and is fastened by means of a bolt 8. In this case, a cylinder part 19 having an insertion hole 18 of the inner tube 6 is mounted to a bracket 13 of a separate handle 11 disposed below the handle crown 4. Meanwhile, an annular protrusion part 21 is formed on the inner tube 6 and in a position below the cylinder part 19. Resilient members 22-24 are respectively located between the protrusion part 21, the cylinder part 19, and the handle crown 4 and between the cylinder part 19 and the inner tube 6.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vibration-proof mounting structure for a vehicle handle used in a motorcycle or the like.

[Conventional technology]

In vehicles such as motorcycles and tricycles, it is required to reduce the vibration of the steering wheel as much as possible.
In response to this, for example, Utility Model Application No. 59-2798
There is one disclosed in Publication No. 6. This is a pair of left and right separate handles with a cylindrical part with slots at the base end, and by fastening both sides of the slits with bolts, the cylindrical part is connected to the front through a cylindrical elastic member. It is tightened to the outer circumferential surface of the fork tube.

[Problem to be solved by the invention]

However, while this structure has the advantage of suppressing vibrations from being transmitted to the separate handles by the cylindrical elastic member, it is difficult to assemble because each separate handle must be attached using a bolt. There was a problem with it getting worse. Furthermore, since the separate handle is supported by the elastic force of the elastic member, it is difficult to ensure the mounting strength of the separate handle. This means that the elastic member has a large elasticity t in the shear direction.
This is because it is difficult to obtain Ω force. The present invention has been made in view of the above circumstances, and provides vibration isolation for a vehicle handle that can improve the ease of assembling a separate handle and also suppress vertical movement of the tip of the separate handle. It provides a mounting structure.

[Means to solve the problem]

The anti-vibration mounting structure for a vehicle steering wheel according to the present invention includes a cylindrical portion through which a tube is inserted at the base ends of the left and right separate handles, a protruding portion below the handle crown of the tube, and A cylindrical portion is sandwiched between the cylindrical portion and the handle crown via an elastic member, and an elastic member is interposed between the cylindrical portion and the tube.

[Effect]

In the present invention, the cylindrical portion of the separate handle is attached using the front fork and the handle crown. Further, since the elastic member is used so as to be elastically deformed mainly in the compression direction, it buffers vibrations from being transmitted to the cylindrical portion, and the cylindrical portion is firmly held.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings. FIG. 1 is I of FIG. 2 showing a part of a motorcycle handle in which the anti-vibration mounting structure for a vehicle handle according to the present invention is implemented.
2 is a plan view showing a part of a handle for a motorcycle. In FIG. 2, the reference numeral 1 indicates a head vibrator provided at the front end of a body frame 2 of the motorcycle. Reference numeral 3 denotes a handle shaft rotatably supported by the head pipe 1. A handle crown 4 is fixed to the upper end of the handle shaft 3 with a fixing bolt 5, and a front fork bracket (not shown) is fixed to the lower end. . Reference numeral 6 denotes left and right inner tubes that constitute the front fork. The inner tubes 6 pass through the front fork bracket in the vertical direction, and are connected to each other by having their upper ends inserted into insertion holes 7 provided on both left and right sides of the handle crown 4 from below. Note that the insertion hole 7 is provided with a slot, and the gap between these slots facing each other is tightened by the port 8 (by doing so, the upper end of the inner tube 6 is fixed to the handle crown 4).

Reference numeral 11 denotes a separate handle disposed below the handle crown 4, which includes a handle par 12 made of a steel tube with a solid base end, and a handle par 12 made of aluminum alloy provided at the base end of the handle par 12. The handlebar 12 is generally composed of a bracket 13, a rubber grip 14 mounted on the outer end of the handlebar 12, and the like. handle par 1
24i A mounting hole 15 whose base end is provided in the bracket 13
It is inserted into the bracket throat 13 and fixed to the bracket throat 13 with a hexagon socket fixing bolt 16 and a press-fit pin 17. The bracket 13 has an insertion hole 18 through which the inner tube 6 is inserted.
A cylindrical portion 19 is provided. The inner diameter of the insertion hole 18 is set to be slightly larger than the outer diameter of the inner tube 6, and a minute gap is provided between the inner tube 6 and the cylindrical portion 19.

Reference numeral 21 denotes an annular protrusion provided on the lower side of the cylindrical portion 19 of the inner tube 6, and holds the cylindrical portion 19 between the handle crown 4 and the inner tube 6. 22. 22 is an annular rubber plate 23 as an elastic member interposed between the protruding portion 21 and the cylindrical portion 19 and between the cylindrical portion 19 and the handle crown 4;
is a washer interposed between the lower rubber plate 22 and the protrusion 21. 24.24 is an O-ring as an elastic member interposed between the cylindrical portion 19 and the inner tube 6, and is fitted into two annular grooves recessed in the inner peripheral surface of the insertion hole 18. There is. The O-ring 24 is provided with a crushing ring.

26 is a positioning arm for determining the attachment position of the separate handle 11. The positioning arm 26 is integrally provided inwardly protruding from the cylindrical portion 19, and has a threaded hole 27 and a fitting hole 28 having a larger diameter than the threaded hole 27 coaxially bored in the distal end thereof. Reference numeral 31 denotes a positioning collar made of steel, which passes through the positioning hole 32 of the handle crown 4 from above and fits into the fitting hole 28, and is fixed to the positioning arm 26 with a positioning bolt 33 screwed into the screw hole 27. has been done. Here, the inner diameter of the positioning hole 32 is set to a size such that a gap is formed between the positioning hole 32 and the positioning collar 31. In addition, the positioning arm 26 is disposed below the handle crown 4, and there is no risk of it being visible from the outside and causing unsightly appearance. Therefore, the positioning collar 31 should be moved as far away from the inner tube 6 as possible to the side. It is formed relatively long. Note that the head of the positioning bolt 33 faces a concave portion 34 that is continuously provided in the positioning hole 32. A minute gap is provided between the inner peripheral surface and bottom surface of this recessed portion 34 and the head of the positioning bolt 33, respectively. For this reason, handle crown 4 and bracket 1
3 is connected only by line contact between the positioning hole 32 and the positioning collar 31, and transmission of vibrations is suppressed as much as possible. Reference numeral 35 denotes a bracket provided on the front side of the handle crown 4, to which a main switch is attached.

In the vibration-proof mounting structure for a vehicle handle constructed in this way, the washer 23, the lower rubber plate 22, the cylindrical portion 19 of the separate handle 11, and the upper rubber are attached to the inner tube 6 attached to the front fork bracket. After fitting the plates 22 in a stacked manner and placing the handle crown 4 thereon, the separate handle 11 is assembled by tightening the positioning bolt 33, the fixing port 5, and the bolt 8 while pressing the rubber plate 22. can be assembled. Therefore, the separate handle 11 can be attached using the inner tube 6 and the handle crown 4.

Furthermore, the rubber plate 22 and O-ring 24 assembled in an elastically deformed state prevent the handle crown 4 and inner tube 6 from coming into direct contact with the separate handle 11, thereby preventing vibrations from being transmitted to the separate handle 11. It can be suppressed. Here, since these elastic members can be used so as to be elastically deformed mainly in the compression direction, they not only buffer the vibrations as described above, but also firmly hold the cylindrical part 19 so that the tip of the bundle bar 12 Movement in the vertical direction can be suppressed.

In this embodiment, a gap is provided between the positioning collar 31 and the positioning hole 32, and the vibration system is separated, so that transmission of vibration from the handle crown 4 to the separate handle 11 is minimized. can be suppressed to Furthermore, even if a gap is provided between the positioning collar 31 and the positioning hole 32 by making the positioning arm 26 long (by making the positioning arm 26 long), the handleper 12 will not be able to reach the inner tube 6 due to the gap.
Since the angle of rotation about the center can be made extremely small, there is no possibility that the separate handle 11 will wobble.

FIG. 3 is a plan view showing another embodiment, and FIG. 4 is the I of FIG.
These are cross-sectional views taken along the line V-IV. In these figures, members that are the same or equivalent to those shown in FIGS. 1 and 2 are designated by the same reference numerals, and their explanations will be omitted.

In this embodiment, a protruding portion is formed by a retaining ring 41 and a washer 23 fitted to the inner tube 6, and the retaining ring 41 and washer 23 together with the handle crown 4
The cylindrical portion 19 is sandwiched between the upper and lower cylindrical rubber members 42 and 43 via a pair of upper and lower cylindrical rubber members 42 and 43, respectively. The cylindrical rubber 42 , 43 is formed in a cylindrical shape and is interposed between the cylindrical part 19 and the inner tube 6 , and has an end formed between the cylindrical part 19 and the handle crown 4 or between the cylindrical part 19 and the washer 23 . A flange portion interposed therebetween is integrally formed. Reference numeral 44 denotes a positioning rubber that is press-fitted into the positioning hole 32, which is formed to have a larger diameter than the head of the positioning bolt 33. As shown in FIG. 5, this positioning rubber 44 consists of an inner collar 44b and an outer collar 44C fixed to the inner and outer peripheral surfaces of a cylindrical rubber 44a. Reference numeral 45 indicates an engagement hole provided in the bracket 13, and reference numeral 46 indicates a retaining protrusion that projects from the lower surface of the handle crown 4 and faces into the engagement hole 45.
1 engage with each other to transmit rotational force to the handle crown 4 when operated. The positioning rubber 44 urges the handle crown 4 and the positioning bolt 33 so that when the separate handle 11 is not operated, the handle crown 4 and the positioning bolt 33 are in a neutral state in which the engagement hole 45 and the engagement protrusion 46 do not engage.

Therefore, the washer 23 and the cylindrical rubber 4 are attached to the inner tube 6.
3. After fitting the cylindrical part 19 of the separate handle 11 and the cylindrical rubber 42 in a laminated manner and placing the handle crown 4 on it, press the cylindrical rubber 42 and 43 and then tighten the positioning bolt 33 and the fixing bolt. 5. Tightening: By tightening the bolt 8, the separate handle 11 can be assembled. Furthermore, the cylindrical rubber 42 and 43 suppress vibrations of the vehicle body from being transmitted to the separate handle 11, and the cylindrical portion 19 can be firmly held.

〔Effect of the invention〕

As explained above, according to the present invention, a cylindrical portion through which a tube is inserted is provided at the base end of the left and right separate handles, a protrusion is provided below the handle crown of the tube, and the protrusion and the handle Since the cylindrical part is held between the crown and the elastic member, and the elastic member is interposed between the cylindrical part and the tube, the cylindrical part of the separate handle can be used as a normal handle by using the front fork and the handle crown. It can be assembled by installing the crown.

Moreover, the elastic member can be used so as to be elastically deformed mainly in the compression direction, so that the cylindrical portion of the separate handle can be firmly held.

Therefore, compared to the conventional structure in which the handle crown and the separate handle are assembled separately, the ease of assembling the separate handle can be improved, and the installation strength can also be ensured.

[Brief explanation of the drawing]

FIG. 1 is a sectional view taken along the line I-I in FIG. 2 showing a part of a motorcycle handle in which the vibration-proof mounting structure for a vehicle handle according to the present invention is implemented; Fig. 3 is a plan view showing another embodiment; Fig. 4 is a plan view showing another embodiment;
The figure is a sectional view taken along the line IV--IV in FIG. 3, and FIG. 5 is a sectional view showing the positioning rubber. 4...Handle crown, 5...Fixing bolt,
61. ...Inner tube, 11...Separate handle, 19...Cylinder part, 21...Protrusion part, 22...
...Rubber plate, 24...0 ring, 42.43...
・Cylindrical rubber. Patent applicant Yamaha Motor Co., Ltd.

Claims (1)

[Claims] In a vehicle in which the left and right tubes of the front fork are connected by being inserted into the handle crown, a cylindrical part through which the tube is inserted is provided at the base end of the left and right separate handles, and a protruding part is provided below the handle crown of the tube. Also, a vibration-proof mounting structure for a vehicle handle, in which the cylindrical portion is sandwiched between the protruding portion and the handle crown via an elastic member, and an elastic member is interposed between the cylindrical portion and the tube.