WO2011007421A1

WO2011007421A1 - Rim lock structure of eyeglass frame and method for manufacturing the same

Info

Publication number: WO2011007421A1
Application number: PCT/JP2009/062751
Authority: WO
Inventors: 悟増永
Original assignee: 増永眼鏡株式会社
Priority date: 2009-07-14
Filing date: 2009-07-14
Publication date: 2011-01-20
Also published as: JPWO2011007421A1; JP4918159B2

Abstract

The rim lock structure of an eyeglass frame comprises, in eyeglasses provided with a thin-sheet frame, an upper projection piece and a lower projection piece formed to extend from the respective ends of an upper rim and a lower rim, an armor attaching portion formed continuously, through a U-bend, at a coupling piece which is formed to extend from the end of the upper rim in parallel with the upper projection piece, an engaging portion formed to extend from the end of a lower rim in parallel with the lower projection piece, and a member for coupling the upper projection piece with lower projection piece. A method for manufacturing the rim lock structure of an eyeglass frame comprises a step for cutting out a frame body and a rim lock structure continuous thereto from one thin plate, a step for bending the frame body, a step for bending the rim lock structure, a step for separating the upper portion from the lower portion of the rim lock structure, and a step for boring the rim lock structure at the predetermined point thereof.

Description

Rim lock structure for eyeglass frame and method for manufacturing the same

The present invention relates to a rim lock structure, and more particularly to a rim lock structure for a spectacle frame suitable for use in spectacles having a thin plate-like frame having a joint, and a method for manufacturing the same.

Recently, as a spectacle frame, a form of spectacles in which a front frame is made of a thin metal plate and a lens is held by engaging an edge of the plate in a groove formed on a side surface of the lens is increasing. The reason is that this type of spectacles is lightweight, has excellent durability and design, and as laser processing and NC processing have been developed as recent processing technologies, the spectacle frame is processed into various shapes. It is also because it became possible. However, although it is now possible to easily process the spectacle frame, it is common to use a rim lock structure as used in conventional spectacle frames in order to attach and tighten the lens to the spectacle frame. Is.

In such a conventional rim lock structure, an upper rim lock component and a lower rim lock component each having a screw hole are attached to the end portions of the upper rim and the lower rim where the eyeglass frame joint is formed by brazing. ing. Then, after the lens is mounted on the spectacle frame, the upper rim lock part and the lower rim lock part are fastened by screwing screws into the screw holes of the upper rim lock part and the lower rim lock part. . For example, see Patent Document 1.

JP-A-10-62726

However, in such a conventional rim lock structure, an upper rim lock component and a lower rim lock component prepared separately are respectively attached to the end portions of the upper rim and the lower rim where the eyeglass frame joint is formed by brazing or the like. It was necessary to adjust the alignment of both parts, including the alignment of the screw holes. In addition, there is a problem that it is not preferable in terms of cost and design to attach a rim lock component which is a separate component to a spectacle frame made of a thin plate.

In view of such circumstances, an object of the present invention is to create a rim lock structure for a spectacle frame that can be produced at a low cost by simple cutting and bending without requiring attachment work such as brazing, and its design. It is to provide a manufacturing method.

An eyeglass frame rim lock structure according to an embodiment of the present invention that achieves the above object has a pair of left and right upper rims and a lower rim, and a thin plate in which a joint is formed between the ends of the upper rim and the lower rim. In the spectacles provided with a frame-like frame, an upper projecting piece and a lower projecting piece formed by extending laterally from the end portions of the upper rim and the lower rim, respectively, are bent in a U shape and face each other. A first and second plate-like leg portion having a hole attachment hole formed therethrough and extending laterally from an end of the upper rim in parallel with the upper protrusion. A connecting piece part formed continuously through a U-shaped bent part, and extending laterally from the end of the lower rim in parallel with the lower protruding piece part The end is engaged with one plate-like leg of the Yoroi mounting part An engagement piece having a U-shaped bent portion, and a connecting member that is fitted in the butted state of the upper and lower protrusion pieces and at least partially surrounds and connects the two. It is characterized by that.

According to the above configuration, in the glasses including the thin plate-like frame in which the joint is formed between the ends of the pair of left and right upper rims and the lower rim, the upper projecting piece and the lower projecting piece are the upper rim and the lower rim. It is formed by extending from the end portion of the side rim to the side, and the connecting piece portion is formed by extending the side surface from the end portion of the upper rim in parallel with the upper protruding piece portion. The engagement piece portion is formed so as to extend laterally from the end portion of the lower rim in parallel with the lower protrusion piece portion. And since the connecting member is fitted in the butted state of the upper projecting piece part and the lower projecting piece part, and encloses and connects both at least partially, without requiring an attachment work such as brazing, A rim lock structure for a spectacle frame that can be produced at a low cost by simple cutting and bending and that is excellent in design can be obtained.

Here, the drop-off preventing means for preventing the connecting member from falling off is further provided, and the drop-out preventing means includes a first U-shaped curved portion and a second U-shaped curved portion connected to the first U-shaped curved portion from the elastic wire. One leg portion of the first U-shaped curved portion is inserted into the armor mounting hole, and both leg portions of the second U-shaped curved portion are brought into contact with the end portion of the connecting member. It may be composed of Yoroi.

It is preferable that the one leg portion of the first U-shaped curved portion is inserted into an elastic tube inserted into the armor mounting hole.

Further, the drop-off preventing means is provided on a protrusion formed in the vicinity of a leg end portion of a U-shaped bent portion formed continuously with the connecting member and one plate-shaped leg portion of the armor mounting portion. A part may be formed so that engagement is possible and it may be comprised by a recessed part.

Further, a manufacturing method of a rim lock structure for a spectacle frame according to another embodiment of the present invention that achieves the above object includes a cutting step of cutting a frame main body portion and a rim lock structure portion connected to the frame main body portion from one thin plate; Bending the frame body to bend to give a predetermined bent shape to the frame body, bending the rim lock to bend to give a predetermined bent shape to the rim lock structure, and the rim lock structure A manufacturing method comprising: a cutting step for cutting up and down; and a drilling step for drilling a hole at a predetermined location of the rim lock structure part,
The frame main body portion has a pair of left and right upper rims and a lower rim, and a joint is formed between the upper rim and the lower rim in the vertical direction at a predetermined distance, and the rim lock structure portion Are an upper projecting piece portion and a lower projecting piece portion formed to extend from the end portions of the upper rim and the lower rim, respectively, and an end of the upper rim in parallel with the upper projecting piece portion. A connecting piece portion extending laterally from the portion, a substantially rectangular end fitting mounting portion formed continuously with the connecting piece portion, and the lower side parallel to the lower projecting piece portion An engagement piece formed to extend laterally from an end of the rim and having an upper end at the tip continuous with a lower end of the rectangular armor attachment, and bending the rim lock structure The process includes a first U-shaped bent portion and the engaging piece between the connecting piece portion and the armor attaching portion. A second U-shaped bent portion is formed in the middle of the first portion, and a third U-shaped central portion is formed so as to have the first and second plate-shaped leg portions facing each other. Forming a bent portion, wherein the detaching step includes detaching a continuous portion between a lower end portion of the armor attachment portion and the engaging piece portion, and the punching step includes the first and second plates. It includes forming the armor attachment hole through the shaped leg portion.

According to the manufacturing method of the above embodiment, a spectacle frame rim lock structure can be obtained at a low cost by simple cutting, bending, and drilling without the need for attachment work such as brazing. In particular, at the time of the cutting process of cutting out the frame main body portion and the rim lock structure portion connected to the frame main body portion from a single thin plate, there is a joint that is separated by a predetermined distance between the upper and lower rim vertical ends. Since it is formed, the engagement of the armor attachment part and the engagement piece part after the separation step of the continuous part between the lower end part of the armor attachment part and the engagement piece part can be facilitated.

Here, it is preferable that a notch substantially equal to the vertical width of the engagement piece portion is formed in the inner side of the lower end of the rectangular armor attachment portion.

According to this form, when the above-described armor attachment part and the engagement piece part are engaged, a part of the engagement piece part is engaged in a form that fits into the notch. The engagement piece portion is firmly connected.

Further, it is preferable that the vertical width of the engagement piece portion is substantially equal to a predetermined distance apart from the joint.

According to this embodiment, the engaging piece portion fits into the notch, so that the design is excellent.

FIG. 1A is a front view of eyeglasses using a rim lock structure for eyeglass frames according to the present invention. FIG. 1B is a plan view of eyeglasses using a rim lock structure for eyeglass frames according to the present invention. FIG. 1C is a side view of eyeglasses using the rim lock structure of the eyeglass frame according to the present invention. FIG. 2 is a process diagram for explaining a manufacturing procedure of the rim lock structure of the spectacle frame according to the present invention, and (A1) and (A2) are a side view and a front view of the spectacle frame in the clipping process, respectively. ) And (B2)) are a side view and a front view of the spectacle frame in the bending process of the frame main body part, respectively, and (C1) and (C2)) are a side view and a front view of the spectacle frame in the bending process of the rim lock structure part, respectively. FIG. 4D is a developed side view of the rim lock structure portion in the separation step. FIG. 3 is a perspective view showing a state of the rim lock structure according to the embodiment of the present invention before the lens is mounted. FIG. 4 is a perspective view showing a state after the lens is mounted on the rim lock structure according to the embodiment of the present invention and before the connecting member is mounted. FIG. 5A is a perspective view of the rim lock structure portion according to an embodiment of the present invention after the connection member is mounted and before the end fitting is viewed from the front. FIG. 5B is a perspective view of the rim lock structure portion according to the embodiment of the present invention after the connecting member is mounted and before the end fitting is viewed from the rear. FIG. 6 is a perspective view illustrating a state after the rim lock structure portion according to the embodiment of the present invention is attached. FIG. 7A is a perspective view showing a state of the rim lock structure portion according to another embodiment of the present invention before the lens is mounted. FIG. 7B is a perspective view showing a state after the lens is mounted on the rim lock structure portion according to another embodiment of the present invention and before the connecting member is mounted. FIG. 7C is a perspective view showing a state after the connecting member is mounted in the rim lock structure according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the description of the present specification, expressions representing directions such as “front and rear”, “left and right”, and “up and down” represent directions when glasses are worn by a person in a normal state.

As shown in FIGS. 1A to 1C, a pair of left and right lenses 110 and a pair of left and right lenses 110 and a pair of left and right lenses, respectively, hold the surroundings of the pair of lenses. 120. The eyeglass frame 120 has a pair of left and right upper rims 120U and lower rims 120L, and a joint described later is formed between the upper and lower ends of the upper rim 120U and the lower rim 120L. Further, the right and left end portions of the spectacle frame 120 are provided with rim lock structure portions 130 formed to extend laterally from the end portions of the upper rim 120U and the lower rim 120L, as will be described later. In addition, 140 is a bridge, 150 is a nose pad, and is formed of the same member as the spectacle frame 120 in this embodiment. 160 is an armor attached to the rim lock structure 130 according to the present invention, and 170 is a temple connected to the armor 160 so as to be openable and closable.

Here, first, a manufacturing procedure of the rim lock structure of the spectacle frame according to the embodiment of the present invention will be described with reference to FIG.

In one embodiment of the present invention, as shown in FIG. 2 (A1), laser processing is performed from one flat metal thin plate X (for example, a β-type titanium alloy having a thickness of about 0.6 mm, stainless steel, etc.). As shown in FIG. 2 (A2), the frame main body part 120B having a predetermined shape and the rim lock structure part 130B connected to the frame main body part 120B are cut out by cutting. In the present embodiment, in this cutting process, both the bridge corresponding part 140B and the nose pad corresponding part 150B are continuously cut out from the frame main body part 120B. Therefore, hereinafter, when simply referred to as the frame main body 120B, it is intended to include the bridge corresponding portion 140B and the nose pad corresponding portion 150B.

Here, as shown in FIG. 2 (A2), the frame main body 120B has a pair of left and right upper rims 120U and lower rim 120L, and in the vertical direction at the left and right ends of the upper rim 120U and the lower rim 120L. An abutment 120S is formed between the end portions separated by a predetermined distance d. On the other hand, the rim lock structure portion 130B includes an upper protruding piece 131U and a lower protruding piece 131L formed to extend in parallel from the left and right ends of the upper rim 120U and the lower rim 120L, respectively. ing. In the present embodiment, concave portions are formed on the side surfaces of the upper protruding piece 131U and the lower protruding piece 131L that face each other. This is because, as will be described later, when the glasses are assembled, the distance between the abutment 120S is made zero, and the side surfaces of the upper protruding piece 131U and the lower protruding piece 131L face each other. This is to improve the engagement state.

The rim lock structure portion 130B includes a connecting piece 132 formed to extend from the end of the upper rim 120U to the side in parallel with a gap with respect to the upper protruding piece 131U, and a connecting piece. And a substantially rectangular yolo mounting portion 133 formed continuously with the portion 132. Further, the rim lock structure portion 130B is formed to extend laterally from the end of the lower rim 120L in parallel to the lower projecting piece portion 131L with a gap interposed therebetween. At the lower end portion, there is an engagement piece portion 134 in which the upper end portion at the tip is continuous. A notch 135 having a vertical width substantially equal to the vertical width of the engagement piece 134 is formed at the lower inner end of the rectangular armor attachment portion 133. These vertical widths are the same as those described above. The predetermined distance d of the joint 120S is substantially equal.

Next, as shown in (B1) of FIG. 2, the frame main body portion 120B connected to the rim lock structure portion 130B that has undergone the above-described cutting process is bent and lens curves corresponding to the bridge corresponding portion 140B and the nose pad corresponding portion 150B. Bending to give a predetermined bent shape to the frame main body portion 120B, including bending along the line.

Further, following the bending process of the frame main body 120B, as shown in FIGS. 2C1 and 2C2, there is a bending process of the rim lock structure 130B that gives the rim lock structure 130B a predetermined bent shape, which will be described later. Executed. In the bending process of the rim lock structure portion 130B, a first U-shaped bent portion 132A (see FIG. 3) is provided between the connecting piece portion 132 and the armor attaching portion 133, and a second U-shaped portion is provided in the middle of the engaging piece portion 134. The letter-shaped bent part 134A (see FIG. 3) is formed at the same time, and the first plate-like leg part 133A and the second plate-like leg part 133B facing the rectangular armor attaching part 133 are formed. , Forming a third U-shaped bent portion 133C (see FIG. 3) at the center thereof. In this way, by forming the first U-shaped bent portion 132A and the second U-shaped bent portion 134A at the same time, as shown in FIG. 2C2, the left and right ends of the rim lock structure portion 130B. Since the parts are aligned on a straight line, it is preferable in terms of aesthetics.

Then, after the bending process of the rim lock structure portion 130B is executed, as shown in FIG. 2D (actually accompanied by bending, but shown in a developed state for easy understanding), A separation process for separating the top and bottom of the rim lock structure portion 130B is performed. That is, the upper end of the tip of the engagement piece 134 that is continuous with the lower end of the armor attachment 133 is separated using a laser processing machine.

Although not shown in FIG. 2 after the above-described detaching step, the first rim-lock structure portion 130B of the rim-lock structure portion 130B is opposed to the end portion formed through the third U-shaped bent portion 133C at the center portion. A drilling step is performed in which the

Yoleloy mounting holes

136A and 136B (see FIG. 5B) are made in the first plate-like leg portion 133A and the second plate-like leg portion 133B.

As shown in FIG. 4, the rim lock structure of the eyeglass frame of the present embodiment manufactured as described above is further fitted to the upper projecting piece 131U and the lower projecting piece 131L in the butted state. Is provided with a connecting member 137 for enclosing and connecting at least partially. The connecting member 137 is formed by cutting out a flat metal sheet made of the same β-type titanium alloy as the above-described material into a cross shape having ears on both sides, and then bending the ears into a U shape. The engaging portion 137A is formed, and a curved portion 137B whose outer end is bent backward is provided.

Furthermore, the rim lock structure of the spectacle frame of the present embodiment includes an armor 160 as shown in FIGS. 5A and 6 that also functions as a means for preventing the connecting member 137 from falling off. The alloy 160 is made of an elastic wire such as nickel titanium alloy or β-type titanium alloy, and has a first U-shaped curved portion 160A and a second U-shaped curved portion 160B connected to the first U-shaped curved portion 160B. The first U-shaped curved portion 160A is continuous with the first leg portion 160A1 inserted through the

armor mounting holes

136A and 136B and the second leg portion 160A2 parallel thereto, and the second leg portion 160A2 is Furthermore, it continues to the first leg 160B1 of the second U-shaped curved portion 160B. That is, in the present embodiment, the second leg portion 160A2 of the first U-shaped curved portion 160A and the first leg portion 160B1 of the second U-shaped curved portion 160B are common. Further, the second U-shaped curved portion 160B is continuous with the above-described first leg portion 160B1 and the second leg portion 160B2 parallel thereto. The plane formed by the first U-shaped curved portion 160A, the first leg portion 160A1, and the second leg portion 160A2, the second U-shaped curved portion 160B, the first leg portion 160B1, and the second leg portion. The plane formed by 160B2 is formed so as to be orthogonal to each other. The second leg 160B2 of the second U-shaped curved portion 160B is further continuous with a hinge portion 165 in which a hinge screw hole 165A is formed.

In the above embodiment of the present invention, the glasses 100 are assembled and completed by the following procedure. First, as shown in FIG. 3, the lens 110 is inserted between the upper rim 120U and the lower rim 120L with the joint 120S of the spectacle frame main body 120B being opened, and the lower rim 120L is moved to an arrow. Moving in the direction of A, the joint 120S is closed as shown in FIG. Accordingly, the edges of the upper rim 120U and the lower rim 120L are engaged in the groove 110A formed on the side surface of the lens 110, and the lens 110 is held by the spectacle frame main body 120B. At the same time, the opposite side surfaces of the upper protruding piece 131U and the lower protruding piece 131L of the rim lock structure portion 130B are abutted with each other, and one end of the second U-shaped bent portion 134A of the engaging piece 134 is attached to the armature. The first plate-like leg portion 133 </ b> A of the portion 133 is engaged. At this time, as described above, in the case of the embodiment in which the notch 135 substantially equal to the vertical width of the engagement piece portion 134 is formed in the first plate-like leg portion 133A of the end fitting attachment portion 133. Is engaged in a form in which a part of one end of the engagement piece 134 is fitted into the notch 135 at the time of engagement between the above-described attachment attachment portion 133 and the engagement piece portion 134. The attachment part 133 and the engagement piece part 134 are firmly connected. In the embodiment in which the vertical widths of the engagement piece 134 and the notch 135 are substantially equal to the predetermined distance d apart from the joint 120S, the engagement piece 134 fits into the notch 135 exactly. Therefore, it is excellent in design.

Next, as shown in FIG. 4, after the joint 120S is closed, the connecting member 137 is fitted while sliding in the arrow B direction with respect to the upper protruding piece 131U and the lower protruding piece 131L of the rim lock structure portion 130B. Combined. Specifically, the engaging portion 137A of the connecting member 137 at least partially surrounds both the upper protruding piece portion 131U and the lower protruding piece portion 131L in the engaged state in which the opposite side surfaces are abutted, and The protruding piece 131U and the lower protruding piece 131L are connected. In the fitting state of the connecting member 137, as shown in FIGS. 5A and 5B, the end surface of the first plate-like leg portion 133A of the armor attaching portion 133 is formed by the curved portion 137B of the outer end of the connecting member 137. And since the clearance gap between 133 A of 1st plate-shaped leg parts and the 2nd plate-shaped leg part 133B which opposes is covered, it prevents that the beauty | look is impaired.

Therefore, as shown in FIG. 5A, the armor 160 having a function as a drop-off preventing means is attached with the connecting member 137 fitted. In the present embodiment, first of all, the resin-made

elastic holes

136A and 136B are formed through the first plate-like leg portion 133A and the second plate-like leg portion 133B that are opposed to each other. The tube 138 is inserted, and the first leg 160A1 continuous with the first U-shaped curved portion 160A of the armor 160 is inserted into the elastic tube 138. Thus, when the armor 160 is attached to the armor mounting part 133, the second U-shaped curved part 160B of the armor 160 is in contact with the curved part 137B at the outer end of the connecting member 137 as shown in FIG. The first leg 160B1 is in the first U-shaped bent part 133A formed between the connecting piece 132 and the armor attaching part 133, and the second leg 160B2 is in the middle of the engaging piece 134. It abuts against the formed second U-shaped bent portion 134A. Thereby, since the bending part 137B is pressed by the 2nd U-shaped bending part 160B of the armor 160 formed with the elastic wire, the connection member 137 is prevented from dropping off.

As described above, according to the present embodiment, the connecting member 137 is simply engaged with the upper protruding piece 131U and the lower protruding piece 131L in the engaged state with the joint 120S closed, and the rim is locked. Can be obtained. Then, by simply inserting the first leg 160A1 of the armor 160 into the

armor mounting holes

136A and 136B with the elastic tube 138 interposed, it is possible to prevent the armor 160 from being attached and the connecting member 137 from falling off. . Moreover, the end surface of the first plate-like leg portion 133A of the armor attachment portion 133, and the first plate-like leg portion 133A and the second plate-like leg portion 133B facing each other by the curved portion 137B at the outer end of the connecting member 137. Since the gap between the two cannot be seen from the outside, it is possible to obtain a rim lock structure for a spectacle frame having excellent fashionability.

On the other hand, when it is necessary to replace the lens 110 or the like, it may be performed in the reverse of the assembly procedure described above.

Note that it is possible to use an armor that does not have the above-described drop-off prevention function as the armor, and this case will be described as another embodiment of the present invention with reference to FIGS. 7A to 7C. This other embodiment is different from the previous embodiment only in that the connecting member 137 and the armor attachment part 133 are slightly modified. Therefore, the same or the same function parts are denoted by the same reference numerals as those of the previous embodiment. A description will be given below of the different points by avoiding redundant explanations.

That is, in this other embodiment, as shown in FIG. 7B, a U-shaped bent portion 137C is formed on the outer end side of the connecting member 137 having engaging portions 137A on both sides, and in the vicinity of the end portion. A rod-shaped protrusion 137D is formed. Further, as shown in FIGS. 7A and 7B, the end fitting attachment portion 133 is formed with a long hole or a recess 133D in which the protrusion 137D can be engaged with the first plate-like leg portion 133A.

Even in this other embodiment, the glasses 100 are assembled and completed by the same procedure as described above. That is, as shown in FIG. 7A, the lens 110 is inserted between the upper rim 120U and the lower rim 120L with the joint 120S of the spectacle frame main body 120B being opened, and the lower rim 120L is moved to the arrow A. The joint 120S is closed as shown in FIG. 7B. Then, in a state in which the joint 120S is closed, the connecting member 137 is fitted while sliding in the arrow B direction with respect to the upper protruding piece 131U and the lower protruding piece 131L of the rim lock structure portion 130B. Further, when the connecting member 137 is advanced to the position shown in FIG. 7C, a rod-like protrusion 137D formed in the vicinity of the end of the connecting member 137 is a long hole or recess 133D formed in the first plate-like leg portion 133A. The connecting member 137 is prevented from falling off. In addition, it cannot be overemphasized that other embodiment provided with this drop-off prevention means may be used with the alloy 160 used in the previous embodiment.

DESCRIPTION OF SYMBOLS 100 Eyeglasses 110 Lens 120 Eyeglass frame 120B Frame main-body part

120U Upper rim

120L Lower rim 130B Rim lock structure part 131U Upper protrusion part 131L Lower protrusion part 132 Connection piece part 132A 1st U-shaped bending part 133 Yoroi attachment part 133A First plate-like leg portion 133B Second plate-like leg portion 133C Third U-shaped bent portion 133D Recessed portion 134 Engagement piece portion 134A Second U-shaped bent portion 135

Notch

136A, 136B 137 connecting member 137A engaging portion 137B curved portion 137C U-shaped bent portion 137D protruding portion 138 elastic tube 160 armor 160A first U-shaped curved portion 160A1 first leg portion 160A2 second leg portion 160B second U-shape Curved part 160B1 1st leg 160B2 2nd leg 165 Hinge part 170 Temple

Claims

In glasses having a pair of left and right upper rims and a lower rim, and having a thin plate-like frame in which a joint is formed between the ends of the upper rim and the lower rim,
An upper projecting piece portion and a lower projecting piece portion formed to extend laterally from end portions of the upper rim and the lower rim, respectively;
An armor mounting part that is bent in a U-shape and is formed by penetrating armor mounting holes in the opposing first and second plate-like leg parts, and parallel to the upper projecting piece part, A Yoroi mounting part formed continuously through a U-shaped bent part on a connecting piece part formed extending from the end sideways;
A U-shaped fold formed in parallel with the lower projecting piece and extending laterally from the end of the lower rim, with the end engaged with one of the plate-like legs of the armor mounting portion. An engagement piece having a portion;
A connecting member that is fitted in the butted state of the upper projecting piece and the lower projecting piece, and at least partially surrounds and connects the two;
A rim lock structure for a spectacle frame, comprising:
The drop-off prevention means further prevents the connecting member from falling off, and the drop-out prevention means is formed of an elastic wire material including a first U-shaped curved portion and a second U-shaped curved portion connected to the first U-shaped curved portion. A leg portion of the first U-shaped curved portion is inserted into the armor mounting hole, and both leg portions of the second U-shaped curved portion are configured to be abutted against end portions of the connecting member. The rim lock structure for a spectacle frame according to claim 1, wherein
3. The rim lock structure for a spectacle frame according to claim 2, wherein the one leg portion of the first U-shaped curved portion is inserted into an elastic tube inserted into the armor mounting hole.
The connecting member further includes a drop-off preventing means for preventing the connecting member from falling off, and the drop-off preventing means includes a protrusion formed in the vicinity of a leg end portion of a U-shaped bent portion formed continuously with the connecting member, and The rim lock structure for a spectacle frame according to claim 1, wherein the projection is formed so as to be engageable with one of the plate-like leg portions of the armor attachment portion, and is constituted by a concave portion.
A cutting process of cutting out the frame main body part and the rim lock structure part connected to the frame main body part from a single thin plate,
Bending the frame body to bend to give the frame body a predetermined bending shape;
Bending the rim lock structure part to bend to give a predetermined bent shape to the rim lock structure part;
A separation step of separating the top and bottom of the rim lock structure,
A drilling step of drilling a hole at a predetermined location of the rim lock structure part,
The frame main body portion has a pair of left and right upper rims and a lower rim, and a joint is formed between the upper rim and the lower rim in the vertical direction at a predetermined distance, and the rim lock structure portion Are an upper projecting piece portion and a lower projecting piece portion formed to extend from the end portions of the upper rim and the lower rim, respectively, and an end of the upper rim in parallel with the upper projecting piece portion. A connecting piece portion extending laterally from the portion, a substantially rectangular end fitting mounting portion formed continuously with the connecting piece portion, and the lower side parallel to the lower projecting piece portion An engagement piece portion formed to extend laterally from an end portion of the rim, and having an upper end portion at the tip continuous with a lower end portion of the rectangular armor attachment portion,
In the bending step of the rim lock structure portion, a first U-shaped bent portion is formed between the connecting piece portion and the armor attaching portion, and a second U-shaped bent portion is formed in the middle of the engaging piece portion. And forming a third U-shaped bent portion at the center so that the rectangular armor mounting portion has first and second plate-like leg portions facing each other,
The disconnecting step includes disconnecting a continuous portion between the lower end portion of the armor attachment portion and the engagement piece portion,
The method of manufacturing a rim-lock structure part of a spectacle frame, wherein the perforating step includes forming a hole mounting hole in the first and second plate-like leg parts.
6. The rim lock structure for a spectacle frame according to claim 5, wherein a notch substantially equal to a vertical width of the engagement piece is formed in an inner side of a lower end of the rectangular end piece mounting portion. Part manufacturing method.
The method for manufacturing a rim lock structure part of an eyeglass frame according to claim 5 or 6, wherein the vertical width of the engagement piece part is substantially equal to a predetermined distance apart from the joint.