JPH04101010U - Screws and eyeglass frame screws - Google Patents

Abstract

(57) [Summary] [Purpose] This invention not only prevents external forces from concentrating on the lenses, but also eliminates the need to design and manufacture special eyeglass frames, and moreover, provides eyeglass frames that maintain their shape retention. Provides frame screws. [Structure] A notch 15 is provided in the neck 11 of a screw 8 for fixing a lens 4 and a screw 2 connected to the lens 4.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is used to fix fixed members to each other or to fix lenses and eyeglass frames. Regarding screws.

0002

[Conventional technology]

FIG. 4 shows a conventional screw of this type. In the figure, 100 is glasses; 101 is an eyeglass frame (member to be fixed), and 102 is a lens. this lens 102 and 101 are screws 10 with necks 105 inserted into their shaft holes 103 and 104. 6 and a nut 107. In addition, 108 is a washer It is.

0003 However, the diameter of the neck portion 105 of the screw 106 is constant, and It is strong. For this reason, after use, the glasses 100 can be left in the pocket of clothes without being exposed to objects. When the lens 101 collides with the lens 101 or is attached to or removed from the face, an external force that exceeds its elastic limit may be applied to the lens 101. If the force is applied, the lens 101 will be damaged from the vicinity of the shaft hole 104.

0004 In order to solve this problem, (a) the glasses frame should be made as thin as possible. They are designed to be more brittle than the lenses, and are constructed so that the eyeglass frames break before the lenses break. , (a) Eyeglass frames such as bridges and temples, as in Utility Model Application Publication No. 60-84918. The lenses are made of flexible resin, and the glasses frame absorbs external forces to prevent the lenses from breaking. It was proposed that

[0005]

[Problem that the idea aims to solve]

However, in (a) above, eyeglass frames are designed and manufactured separately from general eyeglass frames. This results in high costs, and the need to replace the frames with new ones every time the frames are damaged. However, the economic burden on the user would be too great. In addition, in (a), the shape of the eyeglass frame This results in a decrease in the ability to maintain the condition. As a result, the glasses frame can be held in an appropriate position on the face. This resulted in a situation in which the vision correction function of the lens was impaired. .

[0006] This idea was developed to solve the above problem, and was designed to prevent external forces from concentrating on the fixed member. Of course, it is possible to prevent Another object of the present invention is to provide a screw that can maintain the shape retention force of a member to be fixed. The purpose is

[0007] In addition, this invention not only prevents external forces from concentrating on the lens, but also There is no need to design and manufacture eyeglass frames, and the shape retention of the eyeglass frames can be ensured. The purpose is to provide screws for eyeglass frames.

[0008]

[Means to solve the problem]

In order to achieve the above purpose, this invention is designed to fix fixed members to each other. In a screw having a neck that is inserted into the shaft hole of a fixed member, the neck is inserted into the shaft hole of the fixed member. The feature is that a weak part is formed by locally weakening the position corresponding to the contact part between the two. do.

[0009] In addition, in order to fix the lens and the eyeglass frame connected to the lens, the lens and the eyeglass frame are fixed. In a screw having a neck that is inserted into the shaft hole of the lens frame, the neck is the part that connects the lens and the glasses. The feature is that a weak part is formed by locally weakening the position corresponding to the contact part with the frame. do.

0010

[Effect]

The function of this device based on the above configuration is that the external force applied to the fixed member is The transmission is transmitted to the weak part of the screw neck through the shaft hole forming surface of the material, and the screw breaks from the weak part. do.

[0011] In addition, the external force applied to the eyeglass frame is transmitted to the weak part of the screw neck via the shaft hole forming surface. The threaded portion breaks from the weakened portion.

0012

【Example】

FIG. 3 shows eyeglasses 1 to which the present invention is applied. In the figure, 2 and 3 are eyeglass frames (fixed After that, the lens is held by the bridge, 4, 2, and the bridge 3. be. 5 A temple connected to the bead 2 via a hinge (Fig. 1) 17 so that it can be opened and closed. It is. The lens 4 is attached to the screw stop 6 of the bridge 3 and the screw stop 7 of the bridge 3. It is tightened and fixed via a screw 8. Figure 1 shows the connection between the bee 2 and the lens 4. There is. 2. The lens 4 is provided with shaft holes 9 and 10, and screws 8 are inserted into the shaft holes 9 and 10. The neck portion 11 of is inserted. A threaded portion 12 is formed at the tip of the neck portion 11. 13 is screwed on. The neck 11 has a thickness greater than the sum of the thickness of the screw 7 and the lens 4. It has a length. Note that 14 is a washer.

[0013] The neck portion 11 of the screw 8 at a position corresponding to the contact portion between the lens 4 and the screw stopper 6. A cutout portion (weak portion) 15 is provided along the circumferential direction to reduce the diameter. Localized brittleness. Specifically, the fragile portion 15 is more fragile than the lens 4.

[0014] FIG. 2 shows the connection between the bridge 3 and the lens 4. The screw 6 has a shaft hole 16 The lens 4 is provided with an axial hole 10 in the same manner as described above. And the shaft hole The neck portion 11 of the screw 8 configured in the same manner as described above is inserted into the holes 16 and 10.

[0015] Next, the operation of the glasses 1 will be explained using FIG. 1 as an example. Close temple 5 after use If you put the glasses 1 in your clothes pocket and it collides with an object, or if you don't put them on or take them off your face. If an external force is applied in the A direction to 2 repeatedly, the shape of the shaft hole 9 of the screw 7 will change. The notch 15 of the neck 11 is sheared by the forming surface and the forming surface of the shaft hole 10 of the lens 4. When the load is applied, the cutout portion 15 breaks before the lens 4 breaks. broken screw 8 will be replaced with a new one.

[0016] In this way, the present invention not only prevents the lens 4 from cracking, but also prevents the eyeglass frame from breaking. In other words, it is possible to use general products without specially designing and manufacturing 2. There will be no increase in costs. In addition, since 2 is used in general, the ability to retain the shape is reduced. Glasses 1 are always held at an appropriate position on the face and perform their vision correction function without having to do so. . Furthermore, since you only need to replace the screw 8, which is cheaper than the lens 4, it is easier to use. The financial burden on users is also light.

[0017] Note that similar actions and effects can be obtained when an external force is applied to the bridge 3 side in Figure 2. Needless to say, it can be done.

[0018] In addition, although the illustrated example describes a borderless frame, other screws may also be used. It can also be applied to any eyeglass frame that holds lenses. Furthermore, the material of the eyeglass frame is plastic. Either plastic or metal is acceptable. Furthermore, the screw in the present invention is suitable for eyeglasses. Items other than frames, that is, fixed members that are easily damaged by external force and are expensive Can be used in any place where you want to tighten and fix. In this case as well, the fixed There is no need to specially design and manufacture fixed parts, so manufacturing costs do not increase. Not only that, but the shape retention ability is maintained as is, and the economic burden is light. You can get

[0019]

[Effect of the idea]

Since this invention is constructed as described above, the member to be fixed is specially designed and There is no need to manufacture it, so not only does the manufacturing cost not increase, but it also maintains its shape. The power is maintained as it is, and the economic burden is light.

[0020] Additionally, by using the screw of this invention in eyeglasses, it is possible to prevent lenses from breaking due to external force. Of course, it is possible to use ordinary eyeglass frames without having to specially design or manufacture them. Therefore, manufacturing costs do not increase. In addition, since it uses regular eyeglass frames, it retains its shape. There is no loss of strength, and the glasses are always held in the appropriate position on the face to provide vision correction function. demonstrate. Furthermore, you only need to replace the screws, which are cheaper than the lenses. The financial burden on the user is also light.

[Brief explanation of drawings]

FIG. 1 is a partially sectional plan view when the screw of the present invention is used to fix the lens to the rear lens.

FIG. 2 is a partially sectional plan view when the screw of the present invention is used to fix a bridge and a lens.

FIG. 3 is a perspective view of glasses using the present invention.

FIG. 4 is a partially sectional plan view of a case where a conventional screw is used to fix the lens to the rear.

[Explanation of symbols]

1 Glasses 2 (eyeglass frame, fixed member) 3 Bridge (eyeglass frame, fixed member) 4 Lens (fixed member) 8 screw 9,10,16 Shaft hole 11 Neck 15 Notch part (weak part)

Claims (2)

[Scope of utility model registration request] Claim 1: A screw having a neck portion inserted into a shaft hole of a member to be fixed in order to fix the members to each other,
A screw characterized in that a neck portion corresponding to a contact portion between fixed members is locally weakened to form a weakened portion. 2. A screw having a neck that is inserted into the shaft hole of the lens and the eyeglass frame in order to fix the lens and the eyeglass frame connected to the lens, the neck being in contact with the lens and the eyeglass frame. A screw for an eyeglass frame, characterized in that a weakened portion is formed by locally weakening a position corresponding to the screw.