JPS5924564Y2 - sign nut - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a marker nut, for example, a marker nut used for attaching general mechanical equipment, automobile wheels, etc.

A light-reflecting object is attached to the end of the nut body opposite to the bolt threading part, and the light reflected from the light-reflecting object informs oncoming and following cars of the distance between the left and right cars at night, for example. A marker nut for fixing an automobile tire wheel is known from Utility Model Application No. 51-136228.

However, as shown in Fig. 1, this conventional nut is provided with a thin cylindrical part at the end opposite to the screw opening of the hexagonal nut body a, and a hemispherical hollow body is provided inside the thin cylindrical part. A light reflector C is fixed so that its top part protrudes from the thin cylindrical part, while an aluminum foil d is placed inside the light reflector C, and a hexagonal nut body a is connected to the light reflector C. Since it was constructed by inserting a butyl rubber packing f and a metal plate g between it and the base part e, the head of the light reflector C that protrudes from the thin cylindrical part is easily worn out.

b. Nuts cannot be recognized in a dark place without a light source because they can only function as a marker by reflecting light.

C When fixing the light reflector C by tightening the thin cylindrical part,
The nut's plating, coating, etc. are likely to be damaged, reducing the durability of the nut.

d It is difficult to arrange aluminum foil with a thickness of about 0.1 mm without causing plastic deformation.

There were other problems.

This invention advantageously solves these problems.

This invention will be explained below based on illustrated examples.

Figures 2a and l) are a cross-sectional view and an end view showing an embodiment of this invention, respectively. In the figures, 1 is a generally hexahedral nut body, and 2 is a female threaded part of the nut body, that is, a bolt threaded part. 3 indicates a recessed portion extending in the axial direction of the nut body on the reflective side of the bolt threaded portion.

In this invention, a hard reflecting plate 4, such as a stainless steel plate or a chrome-plated steel plate, which has good reflectivity and has an appropriate thickness (0.1 mm or more) is arranged on the bottom of the recessed part 3. The light reflector 5 is fitted into the recess 3 on the outside.

The light reflector 5 has a hollow region 5a in its center, and has a height such that its head 5b does not protrude from the concave portion 3.

The head 5b has a smaller diameter than the inner diameter of the recess 3, and the annular leg 5C of the light reflector 5 located at the bottom of the recess 3 has the same diameter as the recess 3.

Further, while the light reflector 5 has a smooth outer surface, at least the inner surface of the head portion has concentric step-like or knurling-like uneven portions 5d.

Here, the uneven portion 5d functions to condense and reflect the incident light beam from the smooth outer surface.

Incidentally, it goes without saying that the uneven portion 5d can be provided over the entire inner surface of the head, but it goes without saying that the uneven portion 5d can also be formed into a symbol or other desired shape.

Further, the light reflector 5 is preferably formed of a plastic material that has excellent transparency and weather resistance and is hard to break, and is preferably colored red, blue, yellow, etc. depending on the intended use of the nut.

Further, the light reflector 5 fitted into the concave portion 3 is firmly fixed to the nut body 1 by the fluorescent substance 6 embedded and fixed between the light reflector 5 and the outer peripheral surface thereof.

As this fluorescent substance 6, for example, an annular member having a wedge-shaped cross section can be used, but if the reduction in man-hours and the sealing property between the light reflector 5 and the recessed part 3 are considered, a curable adhesive may be used. It is preferable to use a fluorescent paint mixed with the above in advance.

Note that, in order to more firmly fix the light reflector 5 to the recess 3, the outer circumferential surface of the annular leg 5C may be bonded to the inner circumferential surface of the recess 3.

Additionally, if the nut is used only in a static state,
It is also possible to attach the light reflector 5 to the recess 3 in a tight fit.

Figures 3a and 3l) are a sectional view and an end view showing a modification of this invention, in which this invention is applied to a through nut.

With this nut, the bolt passes through it, so the reflector 4
Bolt through holes 4a and 5e are provided in the head 5b of the light reflector 5, respectively.

As described above, according to the marker nut according to this invention: a. Since the head 5b of the light reflector 5 does not protrude from the concave portion 3, the abrasion resistance of the light reflector is improved.

b By using the fluorescent substance 6, the presence of nuts can be extremely easily confirmed even in a dark place where there is no incident light.

By adhesively fixing the C-light reflector 5 to the concave portion 3, caulking work becomes unnecessary and the nut surface is not damaged, thereby improving the durability of the nut.

d By using a hard metal plate as the reflection plate 4, work efficiency is improved and an appropriate reflected light beam can always be obtained.

For this reason, when this nut is used in general mechanical equipment, it can be easily recognized even in a dark place. Therefore, by changing the color of the light reflector, symbols, etc. Safety can be easily confirmed without creating warning holes or applying different paints.

In addition, when this nut is used as a mounting nut for a car wheel, the installation of the nut can be confirmed even in the dark, which prevents car accidents from occurring.
Other cars can easily confirm the presence of a car and the distance between them.
This also prevents accidents from occurring.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing a conventional example, Fig. 2 a, l) is a sectional view and end view showing an embodiment of this invention, and Fig. 3 a, l) is a sectional view showing a modified example of this invention. and an end view. DESCRIPTION OF SYMBOLS 1...Nut body, 2...Bolt threaded portion, 3...Recessed portion, 4...Reflector plate, 4
a, 5e... Bolt through hole, 5... Light reflector, 5a... Hollow area, 5b... Head, 5C... - Annular leg portion, 5d... uneven portion, 6... fluorescent material.

Claims (1)

[Scope of Claim for Utility Model Registration] ■ A concave portion extending in the axial direction of the nut body at the end opposite to the bolt threaded portion, and a concave portion that is fitted into the concave portion so as not to protrude from there. between a light reflector having a combined translucent property, a reflector plate positioned closer to the bolt threading part than the light reflector within the recess, and an outer circumferential surface of the light reflector and an inner circumferential surface of the recess. A labeled nut comprising a fluorescent substance embedded and fixed in the nut. 2. The marker nut according to claim 1, wherein an uneven portion is provided on the inner surface of the head of the light reflector. 3. The marker nut according to claim 1, wherein the light reflector and the reflector plate are provided with bolt through holes.