JP3053251U - Glasses nut - Google Patents

Abstract

(57) [Summary] [Problem] To provide a nut for spectacles that is not loosened after tightening in a nut screwed into a small screw used for spectacles. SOLUTION: This nut has a cap 2 and a straight hole 3 having no thread on an inner peripheral surface 9 of a hole into which a screw is inserted.
When screwed, the screw tip 11 is brought into contact with the hole bottom 10.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a nut used for eyeglasses, which does not loosen, or at least hardly loosens.

[0002]

[Prior art]

 Nuts are often used to fasten parts with glasses, but this nut loosens and loosens the tightened parts. Especially in the case of glasses, screws and nuts that are as small as possible are sometimes used in consideration of their weight and design, which makes them easy to loosen. For example, in the case of frameless glasses that do not use a rim to fit the lens, the lens is directly screwed by a connecting member, and a yoroi is screwed to the outside of the lens.

FIG. 5 shows general frameless glasses. As shown in the figure, the frameless glasses have the two lenses (a) and (b) connected by a connecting member (b), and a lens (c) is attached to the outside of the lens. The vine (d) is connected to the yoroi (c) via a hinge (e) so that it can be folded. By the way, the lenses (a) and (b) are screwed to the connecting member (b) and also screwed to the yoke (c) to form glasses.

FIG. 6 is an enlarged cross-sectional view showing a connection structure between the yoke (c) and the lens (a). A fastening piece (f) extends from the yolo (c) to the lens side, and this fastening piece is The tip and lens (a) are screwed. The lens (a) is provided with a lens hole (g), a resin washer (h) fits into the lens hole (g), and another resin washer (r) is attached to the back of the lens, and the lens is stopped. The nut (ル) is screwed into the screw (ヌ) protruding to the back through the lens hole (ト) from the attachment piece (裏) and tightened.

[0005] By the way, the above-mentioned nuts are designed so that they are not easily loosened. However, if the nuts are slightly loosened, the lenses are loose and the glasses are hard to wear, and also cause the lens to break. In the past, various measures have been taken to prevent screws from loosening.For example, there are known methods of forming a groove on the outer periphery of a screw and applying resin to the screw thread. Since the screws and nuts used are small, the effect of preventing loosening is not sufficient.

[0006]

[Problems to be solved by the present invention]

 As described above, the nuts used in the conventional glasses have the above-mentioned problems. The problem to be solved by the present invention is this problem. The present invention provides an eyeglass nut that does not loosen once tightened and is at least less loose than conventional ones.

[0007]

[Means for Solving the Problems]

 The nut of the present invention has a cup-like shape, and has a shape in which the screwed bolt does not penetrate. The nut is formed with a hole into which the screw is screwed, but this hole is not a screw hole but a straight hole having no screw thread. Therefore, by screwing into the screw, it functions to screw into the hole while being formed by the screw thread provided in the screw, and to tighten.

In this case, the screw to be screwed in while forming the screw is inserted until the tip of the screw comes into contact with the bottom of the hole, and the screw formed on the inner peripheral surface of the nut hole is tightly contacted or crimped without any gap with the screw thread. It becomes a fixed state. The threads of the nut are formed by the thread of the screw, so they are in close contact with each other.However, with the tip of the screw abutting against the bottom of the hole, the screw is further tightened slightly to secure the screw. The thread and the thread of the molded nut are in pressure contact with each other, and they are fixed. Therefore, the nut does not loosen by rotating in the reverse direction, and has a great effect at least in preventing loosening.

[0009] By the way, the nut is basically in a straight prepared state in which a screw is not formed. However, in order to facilitate the screw to be screwed into the prepared hole of the nut, not a straight prepared hole but a screw is used. A screw hole with a lower thread can be formed in advance, and in this case, the screw is screwed together to form a complete regular screw thread. Also, 1/2 or 1/3 screws may be machined from near the entrance of the pilot hole. By screwing the screw into the pilot hole, a screw thread is formed in the remaining 1/2, 2/3 pilot hole. You. Of course, also in this case, it is better to slightly retighten the tip of the screw in a state of contact with the bottom of the prepared hole so that the formed screw thread is pressed or fixed to the screw thread. Of course, retightening should not cause the formed thread to break. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0010]

【Example】

 FIG. 1 is an embodiment showing the nut of the present invention, and shows a hexagon nut with a cap. That is, the nut body 1 and the cap 2 are integrally formed, and the nut body 1 has a straight hole 3. Here, the material is not particularly limited, but a relatively soft material is used, for example, nickel silver or the like is suitable. Of course, it depends on the material of the screw with which the nut is screwed, but stainless steel is suitable for the eyeglass screw.

FIG. 2 shows an example of the use of the nut of the present invention, which is the same as the lens mounting structure in the frameless glasses shown in FIG. The nut A is screwed into the tip of the screw 4 to fasten the lens 5, and the lens 5 is provided with a yoro 6. The lens 5 is provided with washers 7 and 8 on both sides and fastened with screws. The tip of the screw 4 is covered with a cap 2 formed on a nut A.

Meanwhile, as shown in FIG. 1, the nut A of the present invention has a straight hole, and is screwed into the straight hole 3 while forming a screw 4. Since the screw 4 is made of stainless steel and the nut A is made of nickel silver, the screw 4 having high hardness is formed as a kind of tool, and the screw is machined on the inner peripheral surface 9 of the straight hole 3. . Of course, it is formed instead of cutting, and screwed until the screw tip 11 comes into contact with the hole bottom 10 of the straight hole 3. Generally, by slightly tightening and tightening the nut A at the point where the screw is engaged, the nut A is crimped or fixed to the screw thread. Of course, whether or not to retighten is a matter of use, and it is not necessary if the accuracy of the straight hole exactly matches the screw diameter.

A screw thread is formed on the inner peripheral surface 9 of the straight hole 3 by screwing of the screw 4 and meshes with the screw thread of the screw 4, but the screw tip 11 is in contact with the hole bottom 10. If the screw 4 is turned in step 2, that is, if the nut is retightened, the nut A rotates in a fixed position, so that the screw of the screw 4 and the screw of the formed nut A are crimped or fixed. become.

FIG. 3 shows another embodiment of the nut according to the present invention. On the inner peripheral surface of this nut, half-threads 12, 12,... Is formed. As shown in the figure, the half screw thread 12 is not a complete screw thread but a screw thread having a height of about half. Therefore, when the screw 4 is screwed into the hole of the nut formed with such half screw threads 12, 12,..., The inner peripheral surface 9 is further formed by the screw thread of the screw 4 as described above. , Resulting in full regular threads. The screw 4 is screwed until the tip 11 of the screw 4 comes into contact with the hole bottom 10.

FIG. 4 shows still another embodiment. This nut forms a screw only near the entrance of the hole, and the other inner peripheral surface 9 is a straight hole. By having a screw at the entrance of the hole, the nut A can be easily screwed into the screw 4, and after properly screwed, the nut is further rotated to obtain the inner peripheral surface of the straight hole 3 with the screw thread. 9 is molded and the thread is completed. In the case of FIG. 3 as well, the screws 4 are easily screwed together by forming the half screw threads 12, 12,... On the inner peripheral surface 9.

Incidentally, the nut A is generally integrally formed by forging. Of course, the nut A of the present invention is not necessarily limited to forging, and the cap 2 can be brazed to the nut body 1. Although the use of the nut A is intended for eyeglasses, it is not limited to the frameless glasses shown in the embodiment. As described above, the nut of the present invention is a nut with a cap, which has a straight hole or a half-thread on the inner peripheral surface of the hole, and has the following effects. .

[0017]

[Effect of the invention]

 The nut of the present invention is a nut with a cap, and since the hole has a straight hole that does not have a thread, the thread is machined on the inner peripheral surface of the hole by screwing it to the screw and molded. The thread is crimped or fixed to the thread of the screw. The screw is screwed until the screw tip touches the bottom of the hole. If the screw is tightened further, the nut will not loosen due to the screw thread. Especially when retightening the nut, even if the hole diameter accuracy of the nut does not match the screw, the formed screw thread is fixed and does not loosen. At least it has a great effect on preventing loosening. On the other hand, the hole of the nut is not limited to a straight hole, and is the same in the case of a half screw thread. The screw can be formed only near the inlet so that the screw can be easily screwed.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the nut of the present invention.

FIG. 2 shows a case where a nut is used for frameless glasses.

FIG. 3 shows another embodiment of the present invention.

FIG. 4 shows another embodiment of the present invention.

FIG. 5 shows general frameless glasses.

FIG. 6 is a diagram illustrating a connection structure between a lens and an eyepiece in frameless glasses.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Nut body 2 Cap 3 Straight hole 4 Screw 5 Lens 6 Yoro 7 Washer 8 Washer 9 Inner peripheral surface 10 Hole bottom 11 Tip 12 Half screw thread

Claims (4)

[Utility model registration claims] 1. A nut for eyeglasses, wherein the nut is a nut with a cap, and the inner peripheral surface of the hole is a straight hole having no thread. 2. A spectacles nut for use in spectacles, wherein the nut is a nut with a cap, and a half thread having a height of about half is formed on an inner peripheral surface of the hole. 3. A nut used for eyeglasses, wherein the nut is a nut with a cap, a thread is formed only on the inner peripheral surface of the hole near its entrance, and the other region is a straight hole. Glasses nut to do. 4. The spectacles nut according to claim 1, wherein the material is molded from a relatively soft material such as nickel silver.