JPH10250663A - Rearview mirror mounting device for two-wheeled vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rearview mirror mounting device whose mirror stay is hindered from being removed without particular tool only through provision of a simple turn stopper, which is precluded from being stolen, and can be embodied at a low manufacturing cost. SOLUTION: A groove stretching in the axial direction or a nicked circlar part 5 is provided in the threaded part 3 of the base of a mirror stay 2, and the bore of a turn stopper washer 6 is fitted on the threaded part 3, and a projection or a nicked circular part 7 furnished at the bore of the washer 6 is fitted in/on the axially directed groove or nicked circular part 7 in the threaded part 3 so that turn stopping is established, and the threaded part 3 is fitted in a threaded hole 10 in a holder 9 and a projection 8 on the periphery of the washer 6 is fitted in a notch 11 at the periphery of the end face of the threaded hole 10, and a lock nut 4 engaged previously on the threaded part 3 is fitted on the end face of the threaded hole 10 with the turn stopper washer 6 interposed in between.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rearview mirror mounting device for a motorcycle or the like, such as a motorcycle or a scooter, in which a base of a rod-shaped mirror stay is screwed into a screw hole of a holder on a body side and mounted.

[0002]

2. Description of the Related Art In a motorcycle such as a motorcycle, as shown in FIG. 9, a rod-shaped mirror stay C having a rear-view mirror (also referred to as a rear-view mirror) attached to a screw hole B of a holder A attached to a bar handle is provided. Adjust the mirror stay C in a direction that is convenient for viewing the rearview mirror by screwing the screw portion at the end, and lock the nut N previously screwed into the screw portion of the mirror stay C with the holder A. Screw hole B
And the mirror stay C is fixed.

Further, as shown in FIG.
Is screwed into the taper fitting F, the taper fitting F is fitted to the taper shaft G, and a predetermined frictional force is applied between the taper fitting F and the taper shaft G by the spring H to form a taper. In some cases, a rotation mechanism is provided so that the fitting F can be held at a position convenient for viewing the rearview mirror. In this device, a taper shaft G is screwed into a screw hole K of a holder J, and a lock nut L previously screwed to the taper shaft G is fastened to an end face of the screw hole K of the holder J. The mirror stay E is attached.

[0004]

In FIG. 9, the mirror stay C is fastened with a lock nut D. However, since the mirror stay C is bent in a U-shape, the rear-view mirror of the mirror stay C cannot be used. When a force is applied to turn the mirror stay C while holding it, the mirror stay C may be leveraged to easily turn the mirror stay C. Therefore, the mirror stay C can be removed from the screw hole B of the holder A, and the rearview mirror may be stolen.

On the other hand, when the mirror stay E is turned, the lock nut L is loosened using a tool only when the mirror stay E is turned by slipping between the taper fitting F and the taper shaft G, as shown in FIG. If not, the mirror stay E side cannot be removed. Thus, in the case of FIG. 10, a tool for loosening the lock nut L is required, and the rearview mirror can be prevented from being stolen.

However, the one shown in FIG. 10 requires a taper fitting F, a tapered shaft G, a spring H, etc., as compared with the one shown in FIG. 9, requiring a large number of parts, complicated processing, and high manufacturing costs. .

In view of the foregoing, the present invention provides a simple anti-rotation device that prevents the mirror stay from being removed without a tool to prevent the mirror stay from being fitted, and reduces the manufacturing cost of the back of a motorcycle or the like. It is intended to obtain a mirror mounting device.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, a rearview mirror mounting device for a motorcycle or the like according to the present invention is provided with an axial groove or a partially circular portion in a threaded portion of a mirror stay base, and a detent washer. Insert the circumference into the screw part, fit the protrusion or the missing circular part provided on the inner periphery of the detent washer into the axial groove or the missing circular part of the screw part and stop it from turning, and insert the screw part into the screw hole of the holder. The outer projection of the detent washer was screwed and fitted to the notch on the outer periphery of the screw hole end face, and the lock nut previously screwed to the screw part was fastened to the end face of the screw hole with the detent washer interposed. It is in.

According to the present invention, the rotation-stop washer is fitted with the inner periphery in the axial groove or the missing circular portion of the mirror stay and is prevented from rotating, and the outer periphery projection is fitted in the notch of the holder to rotate. Once stopped, the mirror stay and holder can be prevented from rotating through the lock nut. For this reason, the mirror stay cannot be rotated even if the mirror stay is gripped and the mirror stay is leveraged to rotate. When removing the mirror stay from the holder, it cannot be removed unless the lock nut is loosened using a tool. In this way, the mirror stay cannot be removed without tools.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The mirror stay 2 to which the rear-view mirror 1 is attached at the tip is a bar shape bent in a letter shape, a screw portion 3 is carved on a base portion, and a lock nut 4 is screwed. The screw portion 3 is provided with a notched portion 5 in which an axial groove or a cross section is notched. On the other hand, as shown in FIG. 3, when the axial groove 5 is provided in the screw portion 3, the protrusion 7 is provided on the inner periphery of the detent washer 6. In addition, as shown in FIG. 4, when the screw portion 3 is formed into the cut-out circular portion 5, a cut-out circular portion 7 is provided on the inner periphery of the rotation stop washer 6, and the rotation stop washer 6 is inserted into the screw portion 3. Then, the rotation preventing washer 6 is prevented from rotating by the axial groove or the missing circular portion 5 and the projection or the missing circular portion 7.

Further, on the outer periphery of the detent washer 6, a downwardly directed outer peripheral projection 8 is provided. A number of notches 11 are provided on the outer periphery of the end surface of the screw hole 10 of the holder 9, and the outer projection 8 of the rotation preventing washer 6 can be selectively fitted into the number of notches 11. The holder 9 is attached to the bar handle 12 by tightening with a bolt, and a hand lever 13 may be attached to the holder 9 or may be integrated with the brake oil tank 14.

The mirror stay 2 has a screw portion 3 and a holder 9.
Screwed into the screw hole 10 so that the bending direction of the mirror stay 2 is adjusted to a position convenient for viewing the rearview mirror 1,
The outer peripheral projection 8 of the rotation preventing washer 6 is fitted into the notch 11 of the holder 9. Then, the lock nut 4 previously screwed to the screw portion 3 of the mirror stay 2 is tightened using a tool, and the lock washer 6 is interposed between the lock nut 4 and the end face of the screw hole 10 of the holder 9.

The non-rotating washer 6 has a projection or a partially circular portion 7 on the inner circumference fitted in an axial groove or a partially circular portion 5 provided in the screw portion 3 of the mirror stay 2, so that the mirror stay 2 and the non-rotating washer are fitted. 6 is stopped. Further, the rotation preventing washer 6 has the outer peripheral projection 8 fitted into the notch 11 of the holder 9, and the rotation preventing washer 6 and the holder 9 are also prevented from rotating. Thus, the mirror stay 2 is provided with the non-turn washer 6.
Can be prevented from rotating to the holder 9 via the. For this reason, the mirror stay 2 cannot be turned even if the mirror stay 2 is used as a lever. When removing the mirror stay 2, the lock nut 4 is loosened using a tool such as a spanner to remove the outer peripheral projection 8 of the detent washer 6 from the notch 11 of the holder 9, and the mirror stay 2 is turned to turn the screw hole 1
Remove from 0.

[0014]

As described above, since the present invention is constructed as described above, the mirror stay and the holder can be prevented from rotating through the rotation-stop washer. Even so, it cannot be removed and theft mirror can be prevented from being stolen. When removing the mirror stay, the lock nut cannot be removed unless the lock nut is loosened using a tool. The protrusion or the missing circular portion of the rotation-stop washer can be formed when the rotation-stop washer is made by punching, and the outer periphery protrusion may be cut and raised. The holder is usually die-cast, and the notch can be formed by casting, and the axial groove or the cut circular portion of the mirror stay may be cut and formed. In this way, the number of parts is smaller than that using a taper fitting and a taper shaft, processing is simple, and it can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is an exploded longitudinal sectional view showing an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of an assembled state showing the embodiment of the present invention.

FIG. 3 is a diagram illustrating a combination of a cross section of a screw portion and a top surface of a rotation preventing washer when an axial groove is provided in a screw portion of a mirror stay according to the embodiment of the present invention.

FIG. 4 is an explanatory view showing a combination of a cross section of a screw portion and a top surface of a rotation preventing washer when a cutout portion is provided in a screw portion of a mirror stay according to the embodiment of the present invention.

FIG. 5 is a screw hole end view of a holder showing the embodiment of the present invention.

FIG. 6 is a perspective view showing a state of being attached to a handle according to the embodiment of the present invention.

FIG. 7 is a plan view of the embodiment of the present invention in a state where it is attached to a handle.

FIG. 8 is a rear view of the embodiment of the present invention in a state where it is attached to a handle.

FIG. 9 is a longitudinal sectional view showing a conventional example.

FIG. 10 is a longitudinal sectional view showing another conventional example.

[Explanation of symbols]

 2 Mirror stay 3 Screw part 4 Lock nut 5 Axial groove or missing circular part 6 Non-rotating washer 7 Projection or missing circular part 8 Outer peripheral projection 9 Holder 10 Screw hole 11 Notch

Claims (1)

[Claims] An axial groove or a missing circular portion is provided in a threaded portion of a mirror stay base, and an inner periphery of a detent washer is inserted into the threaded portion, and a projection or a lacked circular portion provided on an inner periphery of the detent washer is provided. The screw is screwed into the screw hole of the holder, and the outer protrusion of the detent washer is fitted into the notch on the outer periphery of the screw hole end face. A rear-view mirror mounting device for a motorcycle or the like, wherein a lock nut screwed first is fastened to an end surface of a screw hole with a detent washer therebetween.