JP2013213891A - Lens attaching/detaching structure of spectacle frame using twinned pad - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lens attaching/detaching structure of a spectacle frame using a twinned pad in which a screw for closing a rim is less susceptible to loosening by an impact and vibration received when wearing or carrying spectacles, or a screw hole is less susceptible to damage when attaching a lens or firmly fastening the screw.SOLUTION: The lens attaching/detaching structure comprises: a front frame 1 in which a substantially intermediate part of the upper/lower of a bridge 12 is laterally cut to allow separation/connection between an upper part 12a and a lower part 12b; a twinned pad 2 in which left/right nose pads 21 and 21 are integrally configured and that has screw insertion holes 23 and 23 at a central connecting part 22; and screw members 3 that pass through the screw insertion holes 23 and 23 of the twinned pad 2 to fix the upper part 12a and the lower part 12b to the bridge 12 of the front frame 1 in the connected state. The twinned pad 2 constitutes the connecting part 22 by covering a core material C with rigidity by a rubber covering material E, and the screw insertion holes 23 and 23 are formed by boring the core material C of the connecting part 22.

Description

  The present invention is an improvement of the lens attachment / detachment structure of the spectacle frame, and more specifically, it is difficult for the rim to loosen due to shocks or micro-vibration when the spectacles are worn or carried, and even when the screw is strongly tightened when the lens is attached, The present invention relates to a lens attaching / detaching structure of a spectacle frame using a twin pad that is not easily damaged.

  In general, when a full rim type resin frame is purchased at a retail store of eyeglasses or the like, the lens is attached by softening the resin frame with a dedicated heater after purchase. This method utilizes the property that an acetate resin used as a material for a resin frame softens at a relatively low temperature (60 ° C.).

  Recently, resin frames using polyamide resins with high softening temperature (softening temperature 90 ° C) and polyetherimide resins (softening temperature 170 ° C) are also increasing, but these are softened with a heater in the same way as acetate resin. If this is the case, the coating on the surface of the frame tends to peel off due to the difference in the coefficient of thermal expansion because it must be heated to a considerably high temperature.

  On the other hand, in the prior art, there are also known lenses that can be attached and detached by cutting the bridge of the front frame in the lateral direction and opening the bridge up and down (see, for example, Patent Document 1). Since the screw member is inserted vertically into the bridge, it is necessary to perform female screw processing on the narrow upper and lower surfaces of the bridge.

  Similarly, a wooden frame employs a structure in which a bridge is opened up and down and a lens is detached (see, for example, Patent Document 2). However, since a structure in which a screw member is inserted up and down is the mainstream, a front frame is also used. It was necessary to perform drilling work and embedding female screw parts, which are difficult to machine.

  On the other hand, in the prior art, as a means for closing the bridge cut in the lateral direction, a structure in which a connecting plate is applied to the rear surface of the bridge and screwed is proposed (see Patent Document 3). Since the screw is inserted and fixed, the subject of the female thread processing is the bridge rear surface having a relatively large area.

  However, since the conventional technique according to the above-mentioned document 3 is a structure in which a metal connecting plate is simply applied, even when the screw is firmly tightened, the shock and vibration received when wearing glasses or carrying (for example, a car or airplane) The screws loosened due to the slight vibrations when riding, etc., and the lens was easily rattling.

  Furthermore, in resin frames and wooden frames, female screw parts for fastening screws are embedded in the rear surface of the bridge and bonded, or screw holes are directly drilled. Then, the female screw part and the screw thread are pulled strongly, and the adhesive breakage or the base material breakage occurs, and there is a concern that the female screw part falls off and the screw hole is damaged.

Japanese Utility Model Publication No. 10-11816 JP 2009-217255 A Japanese Utility Model Publication No. 61-60223

  Accordingly, the present invention has been made in view of the above-described problems, and the object of the present invention is that it is easy to process during manufacture, and the rim is removed by impact and vibration received when wearing glasses or carrying. An object of the present invention is to provide an eyeglass frame lens attaching / detaching structure using a twin pad in which a screw that is closed is unlikely to loosen and the screw hole is not easily damaged even when the screw is strongly tightened when the lens is attached.

  Means employed by the present inventor to solve the above problems are as follows.

That is, according to the present invention, the upper and lower lenses L and L can be separated and joined by cutting the upper and lower intermediate portions of the bridge 12 connecting the left and right rims 11 and 11 in the lateral direction. Front frame 1 configured so that L can be attached to and detached from rims 11 and 11; Twin pad with left and right nose pads 21 and 21 integrally formed and provided with screw insertion holes 23 and 23 in the central connecting portion 22 2; and a screw member 3 that can be fixed with the upper 12a and the lower 12b joined to the bridge 12 of the front frame 1 through the screw insertion holes 23, 23 of the twin pad 2.
Further, for the twin pad 2, a rigid core material C is covered with a rubber-like coating material E to form a connecting portion 22, and screw insertion holes 23 and 23 are formed in the core material C of the connecting portion 22. By configuring
When the screw member 3 is fastened to the bridge 12 of the front frame 1, the screw member 3 can be prevented from loosening by the elastic action of the covering material E of the twin pad 2 sandwiched therebetween.

  Further, with respect to the bridge 12 of the front frame 1, a convex plate portion P protruding to the other side is provided on one of the upper portion 12a and the lower portion 12b, and the upper portion 12a and the lower portion of the bridge 12 are provided on the rear surface portion on the other side. A through hole H into which a convex groove P having the same width as the convex plate portion P is formed and the screw member 3 is inserted into the convex plate portion P is inserted into the convex plate portion P when the convex plate portion P is inserted. It is also possible to provide a screw hole N for fixing the screw member 3 in the concave groove Q.

  As a result, if the screw member 3 is inserted and fixed in a state where the convex plate portion P provided on one of the upper portion 12a and the lower portion 12b is inserted into the concave groove Q on the other side, the upper portion 12a of the bridge 12 The lower portion 12b can be fixed in the joined state, and the lateral displacement of the bridge upper and lower portions in the state where the convex plate portion P is inserted into the concave groove Q can be prevented.

On the other hand, the lens attaching / detaching structure of the present invention can also be applied to a double frame having a front frame 1 and an inner frame 4.
In that case, the front frame 1 to which the left and right temples T and T are connected; and the bridge 42 that is disposed on the rear side of the front frame 1 and connects the left and right rims 41 and 41 is located at the middle of the upper and lower sides. And the inner frame 4 in which the upper part 42a and the lower part 42b of the bridge 42 are provided with insertion holes 42c and 42c, respectively. A twin pad 2 in which the nose pad portions 21 and 21 are integrally formed and the central connecting portion 22 has screw insertion holes 23 and 23; the screw insertion holes 23 and 23 of the twin pad 2 and the inner frame 4 The screw member 3 that can be fastened with the upper portion 12a and the lower portion 12b joined to the bridge 12 of the front frame 1 through the insertion holes 42c and 42c.

  In the present invention, as a means for closing the bridge cut in the lateral direction for lens attachment and removal, by adopting a structure in which the twin pad with the core material covered with a rubber-like coating material is applied to the rear surface of the bridge and screwed, Since the twin pad covering material can be sandwiched between the screw head and the bridge, this demonstrates the same effect as a rubber washer, preventing shocks and vibrations when wearing glasses or carrying, and preventing loosening of the screw. be able to.

  Moreover, when the front frame is a resin frame or a wooden frame, even if the screw is tightened strongly when the lens is attached, the coating material of the twin pad acts as a cushion to reduce the load applied to the female screw part and female screw thread. Therefore, there is no worry that the embedded female screw parts will fall off or the screw holes will be damaged.

  Furthermore, since the present invention employs a structure in which screws are inserted back and forth with respect to the bridge, a hole drilling operation for embedding female screw components and an embedding operation of female screw components are facilitated. The same applies to the case where a metal frame is adopted for the front frame and the female screw is cut directly on the bridge.

  Therefore, according to the present invention, not only the conventional manufacturing problems can be solved, but also the glasses with excellent functionality that can eliminate the damage of the frame when the lens is mounted and the wobbling of the lens when using the glasses. Since the lens attachment / detachment structure for the frame can be provided, the practical utility value of the present invention is very high.

It is a disassembled front view showing the lens attachment / detachment structure of the spectacles frame in Example 1 of this invention. It is a state explanatory view for explaining a lens attachment and detachment method in Example 1 of the present invention. It is a bottom view showing the screw fixation structure of the bridge | bridging and twin pad in Example 1 of this invention. It is X-X 'end elevation showing the screwing structure of a bridge and a twin pad in Example 1 of the present invention. It is the front view, side view, and back view showing the structure of the twin pad in Example 1 of this invention. It is an end elevation showing the lens attachment / detachment structure of the spectacle frame in Example 2 of the present invention. It is a disassembled perspective view showing the lens attachment / detachment structure of the spectacles frame in Example 3 of this invention. It is an end elevation showing the lens attachment / detachment structure of the spectacle frame in Example 3 of the present invention.

“Example 1”
A first embodiment of the present invention will be described with reference to FIGS. In the figure, the reference numeral 1 indicates a full rim type front frame to which the left and right temples TT are connected, and the reference numeral 2 indicates a twin pad. What is indicated by reference numeral 3 is a screw member.

  First, in the first embodiment, in the resin front frame 1 having the rims 11 and 11 that surround and hold the left and right lenses L and L, and the bridge 12 that connects the left and right rims 11 and 11, the bridge 12 The upper portion 12a and the lower portion 12b of the bridge 12 are configured to be separable and connectable by cutting the upper and lower intermediate portions (slightly lower in this embodiment) in the horizontal direction (see FIG. 1). .

  Accordingly, if the upper part 12a and the lower part 12b of the bridge 12 are separated as shown in FIG. 2A (if the rim 11 is opened), the lens L can be attached (or removed) to the rim 11, and If the upper part 12a and the lower part 12b of the bridge 12 are joined as shown in FIG. 2 (b) (the rim 11 is closed), the lenses L and L can be fixed inside the rims 11 and 11 without rattling. it can.

  On the other hand, the nose pad attached to the front frame 1 uses a twin pad 2 in which left and right nose pads 21 and 21 are integrated, and two screw insertion holes 23 are formed in the central connecting portion 22 of the twin pad 2.・ 23 is provided. Then, the twin pad 2 is attached by fixing the screw member 3 to the bridge 12 through the screw insertion hole 23 (see FIGS. 3 and 4).

  Further, the screw member 3 for attaching the twin pad 2 is fixed to the bridge 12 of the front frame 1 in a state where the upper portion 12a and the lower portion 12b are joined so that they are not separated from each other. Fixing can be performed at the same time. A plurality of screw members 3 are preferably fastened so that the twin pads 2 do not rotate.

  Further, in this embodiment, a convex plate portion P protruding upward is provided on the lower portion 12b of the bridge 12 of the front frame 1, while the convex plate portion is formed on the rear surface portion of the bridge lower portion 12b when the upper and lower portions of the bridge are joined. A concave groove Q into which P is inserted is formed, a through hole H is provided in the convex plate portion P, a screw hole N is provided in the concave groove Q, and the screw member 3 is inserted into the screw hole N of the concave groove Q. The bridge upper and lower parts are prevented from separating by being fastened through.

  Furthermore, in the first embodiment, the concave groove Q formed in the upper portion 12a of the bridge 12 has the same width as the convex plate portion P, and the bridge 12 is inserted into the concave groove Q with the convex plate portion P inserted. The upper and lower parts do not cause lateral displacement. The convex plate portion P and the concave groove Q can be provided opposite to the upper portion 12a and the lower portion 12b of the bridge 12.

  The twin pad 2 fixed to the front frame 1 is configured by covering the rigid core material C with a rubber-like coating material E and screw insertion holes 23 and 23 in the core material C of the connecting portion 22. (See FIG. 5). In this embodiment, a stainless steel plate is used for the core material C, and silicon rubber is used for the covering material E.

  And since the twin pad 2 was comprised from the core material C and the coating | covering material E as mentioned above, when the screw member 3 was fixed to the bridge 12 of the front frame 1, it was pinched | interposed between the screw head and the bridge 12. Since the covering material E of the twin pad 2 exhibits the same elastic action as that of the rubber washer, the effect of suppressing loosening of the screw member 3 is obtained.

“Example 2”
Next, Example 2 of the present invention will be described below with reference to FIG. In the second embodiment, screw holes N and N for fixing the screw members 3 are provided in the upper portion 12a and the lower portion 12b of the bridge 12 of the front frame 1, and screws are also inserted into the connecting portion 22 in the center of the twin pad 2. Two holes 23 and 23 were arranged vertically.

  Thus, with the upper part 12a and the lower part 12b of the bridge 12 of the front frame 1 joined, the screw members 3 and 3 are passed through the screw insertion holes 23 and 23 of the twin pad 2 to the upper part 12a and the lower part 12b of the bridge 12, respectively. Can be fixed in a state in which the left and right rims 11 and 11 to which the lenses L and L are attached are closed.

“Example 3”
Next, a third embodiment of the present invention will be described below with reference to FIGS. In the third embodiment, the left and right rims 41 and 41 of the inner frame 4 are connected in a double frame comprising the front frame 1 to which the left and right temples T and T are connected and the inner frame 4 disposed on the rear side. The bridge 42 was cut in the horizontal direction at the upper and lower intermediate portions so that the upper part 42a and the lower part 42b of the bridge 42 could be separated and joined (see FIG. 7).

  Further, the upper portion 42a and the lower portion 42b of the bridge 42 of the inner frame 4 are provided with insertion holes 42c and 42c, respectively, and screw insertion holes 23 and 23 provided in the central connecting portion 22 of the twin pad 2; The screw member 3 can be fixed to the screw hole N of the bridge 12 of the front frame 1 through the insertion holes 42c and 42c of the bridge 42 of the frame 4 (see FIG. 8).

  Thus, when the screw member 3 is fastened with the upper portion 12a and the lower portion 12b of the bridge 42 of the inner frame 4 joined, the rims 41 and 41 of the inner frame 4 to which the lenses L and L are attached are closed. It can be fixed with. In addition, loosening of the screw can be prevented by the covering material E of the twin pad 2 sandwiched between the screw head and the bridge 42 of the inner frame 4.

  The present invention is generally configured as described above. However, the present invention is not limited to the described embodiments, and various modifications can be made within the description of “Claims”. In 1, not only a resin frame using acetate resin or polyamide resin, but also a wooden frame such as bamboo or a metal frame such as titanium alloy can be used. The same applies to the material of the inner rim 4.

  As for the material of the twin pad 2, a plate material made of engineering plastic with high rigidity other than a metal plate can be used for the core material C, and a thermosetting elastomer such as silicon rubber or synthetic rubber is used for the coating material E. Alternatively, an olefin-based thermoplastic elastomer can also be used.

  Furthermore, as for the twin pad 2, if the covering material E is sandwiched between the bridge of the screw head and the front frame 1 (or the inner frame 4), the screw insertion side of the core material C of the connecting portion 22 is partially. May be exposed. Further, the screw hole N provided in the bridge may be formed by embedding female screw parts, both of which belong to the technical scope of the present invention.

  In recent years, with the increasing demand for fashionable eyeglass frames, resin frames with abundant frame design variations and wooden frames with unique textures are becoming increasingly popular. In addition, the resin frame is also used for protective glasses for hay fever countermeasures, so the age group of consumers is wide.

  Under such circumstances, the lens attachment / detachment structure of the eyeglass frame using the twin pad of the present invention securely attaches the lens to the eyeglass frame made of a resin frame or a wooden frame so as not to rattle during use. In addition, since it is a useful technique that anyone can easily perform installation work, its industrial utility value is very high.

1 Front frame
11 rims
12 bridge
12a top
12b Lower 2 Twin pad
21 Nose pad
22 Connecting part
23 Screw insertion hole 3 Screw member 4 Inner frame
41 rims
42 bridge
42a top
42b bottom
42c Insertion hole T Temple L Lens P Convex plate part Q Concave groove H Through hole N Screw hole C Core material E Cover material

Claims (3)

By cutting the upper and lower middle parts of the bridge (12) connecting the left and right rims (11) and (11) in the horizontal direction, the upper part (12a) and the lower part (12b) can be separated and joined. The front frame (1) configured to allow the lenses (L) and (L) to be attached to and detached from the rim (11) and (11); the left and right nose pads (21) and (21) are integrally configured, and the central connection A twin pad (2) having screw insertion holes (23) and (23) in the portion (22); and through the screw insertion holes (23) and (23) of the twin pad (2), the bridge of the front frame (1) ( 12) includes a screw member (3) that can be fixed with the upper part (12a) and the lower part (12b) joined together,
Further, the twin pad (2) is formed by connecting a rigid core material (C) with a rubber-like coating material (E) to form a connecting portion (22), and the core material of the connecting portion (22) ( C) is formed by drilling screw insertion holes (23) and (23).
When the screw member (3) is fixed to the bridge (12) of the front frame (1), the screw member (3) is loosened by the elastic action of the covering material (E) of the twin pad (2) sandwiched between them. The lens detaching structure of the spectacle frame using the twin pad, characterized in that the suppression is suppressed. In the bridge (12) of the front frame (1), a convex plate part (P) protruding to the other side is provided on one of the upper part (12a) and the lower part (12b), and the bridge on the rear surface part on the other side When the upper part (12a) and the lower part (12b) of (12) are joined, the concave plate (Q) having the same width as the convex plate part (P) is formed. Furthermore, the through hole (H) for inserting the screw member (3) into the convex plate portion (P) and the screw hole (N) for fixing the screw member (3) in the concave groove are provided. ,
The screw member (3) is inserted and fastened with the convex plate portion (P) inserted into the concave groove (Q), and the upper portion (12a) and the lower portion (12b) of the bridge (12) are joined. The lens mounting / demounting structure for a spectacle frame using the twin pad according to claim 1, wherein the lens mounting / demounting structure is capable of being fixed by a lens. The front frame (1) to which the left and right temples (T) (T) are connected; and the bridge (42) arranged on the rear side of the front frame (1) and connecting the left and right rims (41) (41) The upper part (42a) and the lower part (42b) can be separated and joined together at the middle part of the bridge (42), and the upper part (42a) and the lower part (42b) of this bridge (42) can be separated. The inner frame (4) provided with insertion holes (42c) and (42c), respectively; the right and left nose pads (21) and (21) are integrally formed, and the screw insertion hole is formed in the central connection part (22). (23) Through the twin pad (2) provided with (23); through the screw insertion hole (23) (23) of the twin pad (2) and the insertion hole (42c) (42c) of the inner frame (4), A screw member (3) that can be fastened with the upper part (12a) and the lower part (12b) joined to the bridge (12) of the front frame (1),
Further, the twin pad (2) is formed by connecting a rigid core material (C) with a rubber-like coating material (E) to form a connecting portion (22), and the core material of the connecting portion (22) ( C) is formed by drilling screw insertion holes (23) and (23).
When the screw member (3) is fixed to the bridge (12) of the front frame (1), the screw member (3) is loosened by the elastic action of the covering material (E) of the twin pad (2) sandwiched between them. The lens detaching structure of the spectacle frame using the twin pad, characterized in that the suppression is suppressed.