JP2011122712A - Locking nut, and connection structure of eyeglasses parts using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a connection part for connecting eyeglasses parts from being loosened even at a rotating part. <P>SOLUTION: A locking nut has a nut base (12) and a nearly truncated-cone-shaped or nearly dome-shaped extending projection (18) arranged in a direction of a shaft hole (30) for a screw of the nut base. The extending projection is provided with at least one or more slits (40) in parallel with the direction of the shaft hole for a screw on a wall surface (14) of the extending projection. A valley part of a screw thread inside the shaft hole for a screw of the extending projection is formed to be shallower than a valley part of a screw thread of the nut base, in addition, is formed to gradually become shallower as it approaches an edge part. When a bolt is inserted, locking effect is provided by elastic return force after elastic deformation of the nearly truncated-cone-shaped or nearly dome-shaped edge part of the extending projection, which makes the nut used for the connection part between the eyeglasses parts. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a locking nut, and more particularly to a locking nut used for connecting spectacle parts and a connection structure thereof.

  In the connection of eyeglass parts, especially in the hinge part, rim lock part, lens fixing part of rimless eyeglasses, etc., the parts are small or thin and there are many parts that move rapidly. The current situation is that stress is applied, the screws are loosened immediately, and there are many breakage and failure of the spectacle parts, which has not changed even now. Therefore, conventionally, in order to eliminate the loosening prevention, for example, a spectacle component fastening nut as disclosed in JP-A-11-231266 (Patent Document 1) has been proposed.

JP-A-11-231266

  However, the nut shown in FIG. 9 as disclosed in Japanese Patent Application Laid-Open No. 11-231266 has a large number of parts, a complicated structure, a bulky appearance in the vertical direction of the screw, and a large amount of catching on hands and skin. I was sorry. In addition, it could not be used for hinge parts with intense movement.

  Therefore, in order to solve the above-mentioned problems in the present invention, first, a nut base, and a substantially truncated cone-shaped or substantially dome-shaped extending protrusion continuously provided in the screw shaft hole direction of the nut base; The extending protrusion is provided with at least one slit parallel to the screw shaft hole direction on the wall surface, and a thread trough inside the screw shaft hole of the extending protrusion. It is formed shallower than the valley of the thread of the nut base, and further shallower as it goes to the tip, and when the bolt is inserted, the extended projection has a substantially truncated cone shape or a substantially dome shape. Provided is a nut having an effect of preventing loosening by an elastic return force after elastic deformation of the tip portion of the nut.

Furthermore, the nut base of the locking nut is one of the female pieces of the hinge piece, and an extended projection having the same structure as that of the locking nut is provided outside the female piece, and the male piece is The female piece part was screwed with a bolt and fitted to the hinge part.

  Further, the nut base of the locking nut is either one of the rim locks for holding the lens, an extended projection having the same structure as the locking nut is provided on the outside, and both the rim locks are bolts. The rim lock part was connected with screws.

In the rimless eyeglasses, the lens fastening part, the lens, and the locking nut are screwed with bolts to form the lens fastening portion of the rimless eyeglasses.

  By adopting the nut of the present invention and the connecting structure using the nut, the number of parts can be reduced, the structure is simple, there is no bulkiness in the screw hole direction, and above all, there is an advantage that the locking effect is great. there were. In addition, even during the visual inspection of the bolt mounting / removal, there is no reduction or crushing of the screw thread at the tip of the bolt, and there is no abnormality, and the tightening use of the bolt to other conventional nuts can be performed thereafter. Can be used as before.

It is a perspective view of Example 1 of the present invention. It is a perspective view of the example of a change of Example 1 of this invention. The screw hole axial direction longitudinal cross-sectional view before the bolt insertion of Example 1 of this invention. The screw hole axial direction longitudinal cross-sectional view after the volt | bolt insertion of Example 1 of this invention. The front view which uses the nut of this invention for the hinge part of Example 2 of this invention. The front view which used the nut of this invention for the rim lock part of Example 3 of this invention. The top view which uses the nut of this invention for the lens fixing | fixed part of the rimless spectacles of Example 4 of this invention. FIG. 5 is an application example of the second embodiment of the present invention. Conventional diagram

  A nut base and a substantially frustoconical or substantially dome-shaped extending protrusion continuously provided in the direction of the screw shaft hole of the nut base; At least one slit is provided on the wall surface, and a thread trough inside the screw shaft hole of the extending protrusion is formed shallower than a thread trough of the nut base, and gradually. When the bolt is inserted, it has a loosening prevention effect due to the elastic return force after the elastic deformation of the substantially truncated cone shape or the substantially dome-shaped distal end portion of the extended protrusion when the bolt is inserted. A nut was used, and it was used as a connecting part for parts of glasses.

1, FIG. 2, FIG. 3 and FIG. 4 are a perspective view and a cross-sectional view passing through the axis and parallel to the axis of the first embodiment of the present invention. FIG. 1 shows a nut 10 of the present invention and a normal bolt 20, and includes a nut base 12, and an extended projection 18 of a substantially truncated cone shape 16 that is connected in the direction of the screw shaft hole 30 of the nut base 12. The extended protrusion 18 is provided with at least one slit 40 parallel to the screw axial hole direction on the wall surface. In this case, two slits 40 are preferable, but the slit 40 is not particularly concerned. Then, as shown in FIG. 3, the thread valley 52 in the screw shaft hole of the extension protrusion 18 is formed shallower than the thread valley 50 of the nut base and is formed as an incomplete thread. It gradually becomes shallower as it goes to the tip 19, and when the bolt is inserted, it is prevented from loosening by the elastic return force after the elastic deformation of the substantially truncated cone-shaped or substantially dome-shaped tip of the extending projection 18. Has an effect.

  FIG. 2 shows a case in which the extended protrusion 18 connected in the direction of the screw shaft hole of the nut base is substantially a dome shape 16a, and may have such a shape, or a similar shape such as a truncated pyramid shape. But it ’s okay.

  3 and 4 are cross-sectional views before and after the bolt 20 is inserted. The nut base 12 and a substantially truncated cone shape (or substantially dome shape) 16 connected in the direction of the screw shaft hole of the nut base. And at least one slit 40 parallel to the screw shaft hole direction is provided on the wall surface 14, and the screw shaft of the extension protrusion is provided in the extension protrusion 18. The threaded valley 52 in the hole is formed shallower than the threaded valley 50 of the nut base, and further shallower as it gradually goes to the tip. When the bolt 20 is inserted, it has a loosening prevention effect by the elastic restoring force B after the elastic deformation A of the substantially truncated cone shape or the substantially dome-shaped tip portion of the extending protrusion. The screw valley portion 52 of the extended projecting portion which has been shallowed is gradually made shallower as it goes to the upper end portion, and there is almost no valley portion at the upper end portion. The projecting portion 18 has an upper end 19 that is elastically deformed laterally A substantially at right angles to the shaft center by the height 24 of the threaded portion of the bolt 20, and a firm locking can be realized by the elastic return force B. .

  FIG. 5 shows a second embodiment, in which the nut base of the locking nut of the present invention is regarded as either the hinge part or the female part 60 of the hinge part of the hinge part, and the locking nut of the present invention The extended protrusion 62 portion was integrally provided outside the female piece 60, the male piece 64 was fitted, and the female piece portion including the extended protrusion 62 was screwed with the bolt 20a. By doing so, it was able to withstand the intense movement of the hinge part and almost no looseness. Further, as shown in FIG. 8, one of the two pieces may be regarded as a nut base of the locking nut of the present invention, and an extended protrusion of the locking nut of the present invention may be provided on the outside thereof. Such hinges or hinges are not only used for turning and folding temples, but can also be used for hinges for flip-up glasses, pad foot attachments, and the like.

  FIG. 6 shows a third embodiment of the present invention, in which the nut base of the locking nut of the present invention is one of the rim locks 70 and 71 for holding the lens, and the same structure is applied to the locking nut of the present invention. The extended protrusions of the lens were provided on the outside, and both rim locks were screwed so as to hold the lens with bolts 20c.

  FIG. 7 shows a fourth embodiment of the present invention, in which the locking nut of the present invention is used for rimless glasses, and the lens fastening part 90, the lens L, and the locking nut 10 of the present invention are screwed with bolts 20d. Stopped. Here, the lens fastening part represents an armor, a bridge, or the like. And even if the number of parts is small, it has a firm effect to prevent loosening and has a clean appearance.

  It can be used not only for eyeglasses but also for securing and loosening precision machine parts.

DESCRIPTION OF SYMBOLS 10 Locking nut 12 of this invention Locking nut base 16 Frustum shape 18 Extension protrusion part 19 Extension protrusion part upper end part (tip part)
20 Normal (Conventional) Bolt 40 Extended Projection Slit 50 Nut Base Thread Valley 52 Extended Projection Thread Valley 60 Hinge Female Portion 64 Hinge Male Portion 70 Rim Lock 90 Lens Fastening Parts L Lens

Claims (4)

  A nut base and a substantially frustoconical or substantially dome-shaped extending protrusion continuously provided in the direction of the screw shaft hole of the nut base; At least one slit is provided on the wall surface of the extending protrusion, and the thread valley in the screw shaft hole of the extending protrusion is shallower than the thread valley of the nut base. It is formed and gradually becomes shallower as it goes to the tip, and when the bolt is inserted, it is prevented from loosening by the elastic return force after the elastic deformation of the substantially truncated cone shape or the substantially dome-shaped tip portion of the extending projection. A locking nut characterized by having an effect.   The nut base of the locking nut according to claim 1 is regarded as one of the female pieces of the hinge piece, and an extended protrusion having the same structure as the locking nut is provided outside the female piece, A structure for connecting spectacle parts in a hinge part, wherein a male piece part is fitted to the female piece part and screwed with a bolt.   The nut base of the locking nut according to claim 1 is regarded as one of the rim locks for holding the lens, and an extended projection having the same structure as that of the locking nut is provided on the outside thereof. Connecting structure for eyeglass parts in a rim lock, characterized by being screwed by a screw.   In the rimless spectacles, a connecting structure for spectacle parts, wherein the lens fixing part, the lens, and the loosening prevention nut according to claim 1 are screwed together with bolts.

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