JP3006859U - Nose pad attachment parts for glasses - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a nose pad attachment component having a structure that does not reduce the strength even when a material having a problem of welding such as titanium material is used. [Structure] A pad washer is provided with a washer having a through hole such as a screw, and a pad core is provided with a receiving portion formed of two fixing members having a through hole for the washer and a fitting hole for accommodating a screw or the like. Prepare The washer has a flat plate shape that is slightly thinner than the width of the receiving portion provided on the pad core, and the portion in contact with the bottom of the receiving portion has a chamfered angular shape. By fitting a screw, etc. with a body that is thinner than the through hole of the washer and the fitting hole of the fixing member and has a fall prevention structure, into the washer sandwiched in the receiving part,
The pad can be slightly rotated and is fixed so as not to fall off.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a nose pad attachment part for an eyeglass frame. Specifically, it relates to a mounting part that connects the nose pad and the pad foot instead of the pad box.

[0002]

[Prior art]

 Since eyeglasses are required to have a comfortable wearing feeling, strength, weather resistance, safety, etc., various frame materials have been applied and various parts have been devised.

The wearing sensation of spectacles depends on the load of the spectacles on the ears and nose, and the feel of the part that directly touches the skin. In particular, the nose pad and pad foot are parts that greatly affect the feeling of wearing. Although it depends on the frame type, many of them use metal for the pad leg to the pad box and synthetic resin for the nose pad, and are used not only for metal frames but also for other frame types.

Such a nose pad and a pad foot are formed by brazing a pad box to the tip of the pad foot made of a metal wire, embedding the pad box in the nose pad, or integrally formed with the nose pad. The core is fitted into the accommodating part of the pad box and fixed with screws. The pad box and pad core mounting structure has a small amount of play that allows the pad to move, and can be angled according to the shape of the wearer's nose.

Cushioned spectacles are constructed by using a flexible material for a portion of the nose pad, modern, etc. that comes into direct contact with the skin, or using an elastic material around it, and devising a structure. There is.

Further, in order to improve the wearing feeling, it is always an important subject to evenly distribute the load of the spectacles and reduce the weight of the spectacles. For weight reduction, development is underway from both sides of lightweight frame materials, downsized components and lightweight components due to their structure. On the other hand, weight reduction due to size and structure poses a problem of maintaining strength. Maintenance and improvement of strength are generally addressed by the shapes and structures of frame materials and parts.

Regarding safety, measures against external damage such as improvement of strength to prevent damage accidents or absorption of shock received during wearing by using elastic material or flexible material have been taken. There is. Recently, safety against allergies has become a problem, and materials that are chemically stable and harmless to the human body have come to be preferred for parts that come into contact with the skin. In some countries, the use of metallic nickel and nickel alloys in products that touch the human body is prohibited by law because metallic nickel is carcinogenic.

[0008] Thus, with the problems of improving strength and wearing feeling and ensuring safety, the use of titanium materials is increasing. Titanium is a safe metal that is lightweight, has excellent strength and corrosion resistance, and has minimal impact on the skin, and is widely used in eyeglass frames such as metal frames and composite frames, and products that come into direct contact with the skin.

[0009]

[Problems to be solved by the device]

 As a recent trend of materials used for eyeglass frames, titanium materials are increasing. Titanium is a metal that is lightweight and has excellent strength, corrosion resistance, and safety, but when it is used as a spectacle frame component, there is a problem with the jointability of the component. The metal parts of the spectacle frame are often connected by brazing, but there is a problem that the welded part of the parts made of titanium material may cause weld peeling or breakage due to repeated stress loads.

In fields other than eyeglass frames, titanium material parts are often manufactured by a casting method by the lost wax method, avoiding welding even if the shape is complicated. However, it is difficult to form thin, small, and complicated eyeglass parts by the casting method. For this reason, welding is unavoidably used in the eyeglass frame, but the welded portion is easily corroded by the acid contained in sweat and sebum, and the titanium material, which has poorer jointability than other metals, may cause damage. Has become.

The nose pad and the pad foot are fixed to the pad core and the pad box respectively attached as connecting parts by screws or the like. Since it supports the eyeglasses, the load is heavier than other places.

Particularly, the pad box has a complicated shape having a cavity for accommodating the pad core and a screw hole in a small box shape. For this reason, it is difficult to fabricate the pad legs together as an integrated component by the casting method, and in the conventional eyeglass frame, each component is connected by welding such as brazing.

When a titanium material is used for the nose pad attachment component, there is a risk of damage due to insufficient strength of the welded portion for the reasons described above. When wearing spectacles, the area around the pad is close to the skin, and it is preferable to use a safe titanium material.On the other hand, since it is a place where sweat, sebum, etc. can easily get dirty, it easily corrodes and has a complicated shape. Therefore, it is not well maintained.

It is an object of the present invention to obtain a nose pad attachment component having a structure that does not reduce the strength even when a material having a problem of welding such as titanium material is used.

[0015]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention provides a pad foot having a washer provided with a through hole for a fixed core material such as a screw, and two insertion holes provided with a through hole for the washer and a fixed core material. It is a nose pad attachment part that is composed of a fixed member and is combined with a pad core that has a receiving part that sandwiches a washer.

The washer at the tip of the pad leg is a flat plate that is slightly thinner than the width of the receiving portion provided on the pad core, and the portion in contact with the bottom of the receiving portion has a chamfered square shape, The portion is fixed in a state in which it can be slightly rotated about the fixed core material.

The fixed core member for fixing the pad core fixing member and the pad foot washer is rotatable in a state fitted in the through hole of the washer and the fitting hole of the fixing member, so as to prevent the falling. Use the one with structure. The washer having a square shape, which is thinner than the width of the receiving portion, and the fixed core material like this allow the pad to have an appropriate space to move, so that the feel when wearing spectacles becomes soft. As the fixed core material, a screw, a screw, a pin, or the like that can be appropriately moved to the pad and has a stable connection state can be used.

[0018]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an enlarged perspective view showing an embodiment of the nose pad attachment part of the present invention.

In the embodiment of the nose pad attachment component of the present invention, the pad foot having the washer 1 having the screw hole and the pad core having the receiving portion constituted by the fixing members 2 and 3 are fixed with the screw 4. It is a structure to determine. The fixing members 2 and 3 are juxtaposed, and the bottom of the receiving portion is flat. On the other hand, the washer 1 of the pad foot has a chamfered rectangular shape in which the portion contacting the bottom of the receiving portion of the fixing members 2 and 3 is chamfered.

The screw 4 used in this embodiment is provided with a stopper 5 in which the diameter of the tip portion inserted into the screw hole is slightly larger than that of the screw hole. The body portion of the screw 4 has a diameter slightly smaller than that of the screw hole, and provides the turning property when the washer of the pad foot and the fixing member are connected. Due to the angular shape of the washer 1 of the pad foot described above, the rotatability is limited, so that the pad has a structure capable of moving appropriately.

A kerf 6 is formed on the screw 4 from the tip portion provided with the stopper 5 to a length of about 1/4 along the axis. When the screw 4 is inserted into the screw hole, the cut groove 6 is narrowed due to the spring property of the material, and the screw 4 easily penetrates the screw hole. When the stopper penetrates the screw hole, the shape of the groove 6 of the screw is restored and the diameter of the stopper becomes larger than that of the screw hole, so the screw does not fall off.

[0022]

[Effect of device]

 As described above, the nose pad mounting component of the present invention is composed of a combination of a pad leg having a washer provided with screw holes and a pad core having a receiving portion for sandwiching the washer instead of the pad box. . Since the pad foot having the washer has a simple shape, it can be easily manufactured as an integrated part by die-cutting, and welding such as brazing is unnecessary. The strength anxiety of the brazed part is eliminated, and it is possible to bear the load of eyeglasses.

Further, although this portion is a portion where dirt such as perspiration is likely to adhere, since there is no brazing portion where corrosion is likely to occur, it is less likely to be damaged, and has a simple shape, which makes maintenance easy. Even if a titanium material, which has problems in corrosion resistance and strength at the brazed part, is used, corrosion and damage are unlikely to occur, and durable eyeglasses that can withstand long-term use can be obtained.

The nose pad attachment part having the shape of the present invention can be manufactured easily by using an integrally molded product such as punching, and the number of steps is reduced, so that the manufacturing cost of eyeglasses can be reduced. effective.

[Brief description of drawings]

FIG. 1 is an enlarged perspective view showing an embodiment of a nose pad attachment part of the present invention.

[Explanation of symbols]

 1 Washer 2 Fixing member 3 Fixing member 4 Screw 5 Stopper 6 Cut groove

Claims (1)

[Scope of utility model registration request] 1. A mounting structure for a pad foot of an eyeglass and a nose pad, comprising a combination of a washer provided at a tip of the pad foot and a receiving portion sandwiching the washer with two fixing members provided at a pad core, wherein the washer is Has a through hole for the fixed core,
The pad core has a flat plate shape slightly thinner than the width of the receiving portion, and the portion in contact with the bottom of the receiving portion has a chamfered square shape, and the two fixing members have an insertion hole for the fixed core material. Then
The washer sandwiched in the receiving portion is fixed in a slightly rotatable state by a fixed core member having a body portion smaller than the through hole of the washer and the fitting holes of the two fixing members. A nose pad attachment part for eyeglasses characterized by the above.