JPH09304742A - Front hanging type spectacles - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make front hanging spectacles easily attachable and detachable and to surely prevent the dislodgment of the front hanging spectacles in the wearing state of the spectacles. SOLUTION: Both ends of right and left lens parts 5 are provided with holding parts 7. These holding parts 7 are provided with fitting cavities 10 capable of attachably and detachably fitting projecting pieces 12 for engagement projectingly disposed at both ends of the front hanging spectacles 2. The distance between the holding parts 7 is diminished by opening both temples 9 in the wearing state of the spectacles. The front ends of the projecting pieces 12 for engagement engage with recesses 25 for engagement successively disposed at the fitting cavities 10 according to thereto.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to apron glasses which can be detachably attached to eyeglasses and which can be surely prevented from falling off when the eyeglasses are worn. is there.

[0002]

2. Description of the Related Art Various types of apron-type eyeglasses are put to practical use for the purpose of obtaining a state of wearing the sunglasses by attaching the apron glasses to the eyeglasses, or for the purpose of correcting the visual acuity of the wearable eyeglasses. There is. One example thereof is apron-type glasses disclosed in Utility Model Registration No. 3011174.

In this apron-type eyeglass, the configuration in which the apron-type eyeglass is detachably attached to the eyeglass is as shown in FIG.
On the outside of the front spectacles, a locking hole b is vertically formed through a connecting piece a protruding from the outer side of the lens frame, and a locking groove c is continuously provided on the outer side of the locking hole b. The bent leg member d is fixed to the part. The leg member d is formed by bending a vertical piece f that can be fitted into the locking groove c downward at the tip of a horizontal piece e that abuts on the upper surface of the connecting piece a, and at the lower end of the vertical piece f. , A structure in which a spherical body g is formed which is smaller than the locking hole b and larger than the groove width of the locking groove c. However, in order to mount the front spectacles on the spectacles, the horizontal piece e is elastically inwardly directed as shown by the alternate long and short dash line in the figure so that the vertical piece f can be inserted through the locking hole b. Then, as shown in FIG. 24, the leg piece d is elastically restored to fit the vertical piece f into the locking groove c, and the spherical g is prevented from coming off to prevent the front eyeglasses from falling off. I was there.

As another means for removably attaching the front spectacles to the spectacles, magnets are fixed to the front sides of the outer side portions of the left and right lens portions of the spectacles, while the magnets are provided on both sides of the front spectacles. There has also been a configuration in which a magnetic piece capable of being attracted is provided and the front spectacles are fixed to the spectacles by the attracting action of the magnet and the magnetic piece.

[0005]

However, in the case of the former front-mounted spectacles utilizing the spring action of the leg members, the outward protrusion amount of the leg members d is at most 5 mm due to the structural limitation of the spectacles. Vertical piece f
It is a great question whether it can be configured so that it can be easily elastically bent inward. Even if it could be constructed in this way, it is questionable whether or not the bent vertical piece can be elastically restored to its original state. Even if such elastic bending is possible at the beginning, the leg members gradually harden due to work hardening as the bending that takes place every time the front eyeglasses are attached and detached is repeated, and an effective spring action is no longer expected. It is very likely that it will not be possible, and in extreme cases, it may lead to breakage of the leg members. In addition, when removing the front eyeglasses, it is necessary to bend the thin horizontal piece e inward, but it is difficult to perform the bending operation only by operating the fingertip. A further problem is that the wearing state of the front spectacles becomes unstable when the spectacles are worn. That is, since the locking hole b is provided in the connecting piece a projecting to the side of the lens rim, the portion h on the outer side of the lens rim elastically moves forward as shown in FIG. As it bends and deforms, the locking groove c
The distance between them becomes large, and as a result, the vertical piece f in the locking groove c is positioned in the locking hole b, and the engagement state of the spherical body g is released, which may cause the apron glasses to fall off. was there.

On the other hand, in the latter spectacles which utilize the attracting action of the magnets, there is an advantage that the front spectacles can be easily attached and detached, but the front spectacles are easily detached when a lateral impact is applied. There was a flaw. Further, there is also a problem that the iron powder adsorbed on the magnet adheres to a cloth piece or the like when the dirt of the lens is wiped off, which damages the lens.

[0007] The present invention has a technical problem to solve the above-mentioned conventional problems, and the front eyeglasses can be easily attached to and detached from the eyeglasses. The purpose of the invention is to provide apron-type glasses that do not wear.

[0008]

The present invention employs the following means to solve the above-mentioned problems. That is, the front-mounted eyeglasses according to the present invention are the eyeglasses in which the inner portions of the left and right lens portions are connected to each other by the connecting portion and the temples are attached to the outer portions of both lens portions so as to extend rearward. A holding portion protruding forward is provided on the outer side portion of the lens portion,
Fittings capable of being removably fitted to the left and right ends of the front eyeglasses having auxiliary lens parts capable of covering the left and right lens parts from the front side thereof can be detachably fitted to the respective holding parts. A fitting space is provided, and a portion of the engaging projection piece on the outer side of the auxiliary lens part is fitted into a surface part of the inner surface of the fitting space on the outer side of the lens part. To obtain an engaging recess. In the state before wearing the glasses, both engaging projections are fitted into the respective engaging recesses so that the front spectacles are held by the both holding portions, and both temples are worn when wearing the glasses. As it expands, the outer side portions of both lens parts elastically bend and deform toward the front side so as to reduce the distance between the facing engagement recesses. Is.

Another aspect of the apron-type spectacles according to the present invention is
In spectacles in which inner parts of the left and right lens parts are connected to each other by a connecting part and temples are attached to outer parts of both lens parts so as to extend rearward, the front parts project to the outer parts of the left and right lens parts. A holding portion is provided, and in each of the holding portions, engaging projections protruding from the left and right ends of front spectacles having an auxiliary lens portion capable of covering the left and right lens portions from the front side thereof are dropped. A bottomed fitting space that can be removably fitted is provided, and an auxiliary lens part of the engaging projection piece is provided on a surface part of the inner surface of the fitting space that faces the outside of the lens part. Is provided with an engaging recess into which the portion on the side facing outward is fitted. Then, as the temples expand when the eyeglasses are worn, the outer portions of both lens portions elastically bend and deform toward the front side so as to reduce the distance between the facing engagement recesses. By doing so, both engaging protrusions are fitted into the engaging recesses, and the upper eyeglasses are prevented from falling off.

In another aspect of the front-wearing type eyeglasses according to the present invention, the inner parts of the left and right lens parts are connected by a connecting part, and temples are attached to the outer parts of both lens parts so as to extend rearward. In the spectacles, a holding portion protruding forward is provided at an outer portion of the left and right lens portions, and each of the both holding portions includes an auxiliary lens portion capable of covering the left and right lens portions from the front side thereof. Fitting cavities into which engaging projection pieces protruding from the left and right ends of the eyeglasses can be detachably fitted from the front side to the rear side, and the outside of the lens portion within the inner surface of the fitting cavity is provided. On the surface portion on the side facing the direction, of the engaging protrusion,
An engaging recess is provided in which a portion of the auxiliary lens portion on the outward side can be fitted. Then, as both temples expand when wearing glasses, the outer side parts of both lens parts are
By elastically bending and deforming toward the front side so as to reduce the distance between the facing engaging recesses, both engaging projecting pieces are fitted into the engaging recesses, and the front of the front eyeglasses. It is characterized in that it is designed to be prevented from falling toward.

In each of the aforesaid eyeglasses, it is preferable that a portion of the engaging projection piece on the side toward the outside of the auxiliary lens portion is formed in a spherical shape. Further, it is preferable that a portion of the engaging projection piece on the side toward the outside of the auxiliary lens portion is formed in a hemispherical shape of the projection toward the outside of the auxiliary lens portion.

In each of the aforesaid eyeglasses, the engaging protrusion is provided with an engaging portion, while the holding portion is engaged with the engaging portion to prevent the aforesaid eyeglasses from rotating in a vertical plane. It is preferable to provide an engaging portion.

In each of the aforesaid eyeglasses, it is preferable that the engaging recess is formed as a through hole penetrating the holding portion toward the outside of the lens portion or as a depression.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. [First Embodiment] In FIGS. 1 to 4, the apron-type eyeglasses 1 according to the present invention are configured such that the apron-type eyeglasses 3 can be attached to and detached from the eyeglasses 2 and the apron-type eyeglasses 3 are surely removed when the eyeglasses 2 are worn. It is configured to prevent.

In the spectacles 2, the inner parts of the left and right lens parts 5, 5 are connected to each other by a connecting part 6, and the outer parts of the both lens parts 5, 5 are projected forward, for example, holding parts 7 of a rectangular parallelepiped shape. 7, a temple 9 is connected to the outer surface of the base end portion of the holding portion 7, and a fitting space 10 is provided in the holding portion 7.

The front spectacles 3 have auxiliary lens parts 11, 1 which can cover the left and right lens parts 5, 5 from the front side thereof.
1 and the engaging projections 12 that can be fitted in the fitting spaces 10 of the holding portion 7 are provided at the left and right ends of both auxiliary lens portions 11, 11.

As shown in the enlarged view of FIG. 2, the engaging projection 12 has a cylindrical neck portion 15 projecting from the center of the tip of a prismatic pedestal 13 having a square cross section. At the tip, a spherical portion 16 having a diameter larger than that diameter is projected.

As shown in an enlarged view in FIG. 2, the fitting space 10 is recessed in the upper surface of the holding portion, and has a bottomed recess for allowing the spherical portion 16 to be fitted in a state in which it is dropped. And the lower half 17 is spherical and the upper half 19 is circumferential. Also, in this fitting space 10, a pedestal split groove 20 and a neck portion, which are opened inward on the inner surface side of the holding portion 7 and which allow the pedestal 13 and the neck portion 15 to be fitted in a state of being dropped in with a slight margin. A stepped split groove 22 consisting of a split groove 21 is continuously provided. Also, the fitting space 10
Of the inner surface of the lens portion 5 on the side facing the outer side, the bottom surface of the fitting space 10 is flush with the bottom surface of the fitting space 10 and is a circular through hole having a diameter substantially equal to the diameter of the spherical portion 16. A mating recess 25 is provided.

In the free state where the spectacles 2 are not worn, the pedestal 13 and the neck portion 15 are fitted into the corresponding split grooves 20 and 21, respectively, as enlarged and shown in solid lines in FIG. At the same time, the spherical portion 16 is fitted into the fitting space 10 in a dropped state. This drop is performed while elastically deforming the lens portions 5 and 5 to widen the space between the fitting cavities 10 and 10. Then, due to the elastic restoration of both lens portions 5 and 5, a portion outside the spherical portion 16 (in this embodiment, approximately half the spherical portion).
An engaged state in which 16a is fitted in the engaging recess (through hole) 25 is obtained. The strength of the engagement in this engagement state is that the spherical portion 16 and the engagement recess 25 due to the elastic deformation of both lens portions 5 and 5 when a certain force is applied upward to the front eyeglasses 3. To the extent that the engagement with can be released. Therefore, in this engaged state, the front eyeglasses 3 are temporarily fixed to the eyeglasses 2.

Then, when the spectacles 2 are worn, both temples 9 and 9 are removed while elastically deforming each part of the spectacles.
As shown by the alternate long and short dash line, the temples 9 and 9 are spread outward, and the temples 9 and 9 are fitted to the temporal region. Due to this expansion, the outer side portions 5a, 5a of both lens portions are elastically bent and deformed toward the front side. As a result, the holding parts 7 and 7 facing each other firmly hold the front eyeglasses 3,
The distance between the holding portions is fixed while wearing the eyeglasses, and there is no fear that the distance will increase. Therefore, the above-mentioned engagement state between the spherical portion 16 and the engagement space 10 shown in FIGS. 5 to 6 is not released, and the accidental detachment of the front spectacles 3 can be prevented.

In this embodiment, since the prismatic pedestal 13 is fitted in the pedestal dividing groove 20, the pedestal 13 and the vertical surfaces 26, 26 facing each other in the front-rear direction as shown in FIG. By the engagement with the inner surfaces 27, 27 of the groove facing each other in the front-rear direction, that is, by the engagement between the engagement portion provided on the engagement projection 12 and the engagement portion provided on the holding portion 7, the vertical direction of the front spectacles 3 Rotation in the plane can be prevented.

When removing the front spectacles, a certain force is applied upward to the front spectacles with the spectacles removed,
A spherical portion 16 while elastically deforming both lens portions 5 and 5
And the engaging recess 25 are disengaged.

Second Embodiment FIGS. 7 to 11 show other embodiments of the front spectacles 1 according to the present invention. The basic configuration is the same as in the first embodiment, and the apron glasses 3 can be attached to and detached from the eyeglasses 2 so that the detachment of the apron glasses 3 can be reliably prevented when the eyeglasses 2 are worn. Has been done.

In the spectacles 2, joint pieces (blowing tips) 30 and 30 projectingly provided on the outer side portions of the left and right lens portions 5 and 5 connected to each other by a connecting portion 6, respectively,
For example, the rear surface of the front piece 31 of an L-shaped member 33 in which a side piece 32 that is bent rearward at a substantially right angle is connected to the outer end of the rectangular parallelepiped front piece 31 having a square cross section, The joint piece 30 is brazed so as to cover it from the front side.
The temple 9 is connected to the rear end of the side piece 32 via a hinge 35. The front piece portion 31 constitutes the holding portion 7 of the present invention which projects forward and holds the front eyeglasses 2 detachably. As shown in an enlarged view in FIG. 8, the holding portion 7 is provided with a bottomed fitting space 10 having a square cross section and opening inwardly and upwardly. An engaging recess 25 having a hemispherical tip is provided in the inner part of the wall surface.

Further, the front spectacles 3 have auxiliary lens portions 11, 1 which can cover the left and right lens portions 5, 5 from the front side thereof.
1, the two auxiliary lens portions 11 and 11 are provided at the left and right ends thereof with protruding projections 12 which can be detachably fitted into the fitting spaces 10 of the holding portion in a substantially close contact state. The engaging projection 12
Has a columnar projection 37 which has a hemispherical tip and can be fitted into the engagement recess 25 at the center of the tip surface of a prismatic section 36 having a square cross section.

Then, in a free state in which the eyeglasses 2 are not worn, as shown in FIGS. 12 to 13, the engaging projection 12 is fitted into the fitting space 10 in a dropped state. This drop is performed while elastically deforming the lens portions 5 and 5 to widen the space between the fitting cavities 10 and 10. Then, due to the elastic restoration of both lens portions 5 and 5, the engagement state in which the protrusion 37 is fitted into the engagement recess 25 is obtained. The strength of the engagement in this engaged state is as follows when a certain force is applied upward to the front eyeglasses 3.
The engagement between the projection 37 and the engagement recess 25 can be released by elastically deforming the two lens portions 5, 5. Therefore, in this engaged state, the front eyeglasses 3 are temporarily fixed to the eyeglasses 2.

Then, when the spectacles 2 are worn, both temples 9 and 9 expand outward as shown by the alternate long and short dash line in FIG. 11 while elastically deforming the respective parts of the spectacles, and the temples 9 and 9 on the side of the head. Will be in a fitted state. With this expansion,
Outer side portions 5a, 5a of both lens portions are elastically bent and deformed toward the front side. As a result, the holding portions 7 and 7 facing each other firmly hold the front spectacles 3 therebetween, and the distance between the holding portions is fixed while wearing the spectacles, and there is no fear of increase. Therefore, the engagement state between the projection 37 and the engagement recess 25 shown in FIGS. 12 to 13 is not released, and the accidental detachment of the front spectacles 3 can be prevented.

In this embodiment, since the prismatic portion 36 of the engaging projection 12 is fitted in the fitting cavity 10 having a square cross section, the vertical surfaces 39, 39 of the prismatic portion facing each other in the front-rear direction.
By the engagement between the front and rear inner surfaces 40, 40 of the fitting space 10, that is, by the engagement between the engaging projection 12 and the retaining section 7. It is possible to prevent the hanging glasses 3 from rotating in a vertical plane.

When removing the front eyeglasses, a certain force is applied upward to the front eyeglasses with the eyeglasses removed,
This is performed by releasing the engagement between the projection 37 and the engagement recess 25 while elastically deforming the two lens portions 5 and 5.

[Other Embodiments] In the first embodiment in which the engaging projection 12 includes the spherical portion 16, the configuration in which the front spectacles 3 can be attached to and detached from the spectacles 2 is shown in FIGS. It can also be modified as shown in 16-17.

14 to 15 show engaging projections 12 projecting from the left and right ends of the front spectacles 3 in a fitting space 10 of a holding section 7 projecting from the outside of the lens 5 of the spectacles. It shows a case in which the front side and the rear side are detachably fitted. Similar to the above, the engaging protrusion 12 has a columnar pedestal 13 having a square cross section, and a cylindrical neck portion 15 protruding from the center of the distal end of the pedestal 13. The tip of the neck portion has a diameter larger than the diameter thereof. The spherical portion 16 having the is projected. On the other hand, the fitting space 10 is recessed in the front surface of the holding portion 7 and has a bottom with which the spherical portion 16 can be fitted with a margin, and the rear half 41 is a spherical surface and the front half 42 is a circle. Present a perimeter. In this fitting space 10, a pedestal opening 43 and a neck opening 45 are formed which are opened inward on the inner surface side of the holding portion 7 and into which the pedestal 13 and the neck portion 15 can be fitted with a margin.
And a stepped opening 46 consisting of In addition, a bottom surface of the inner surface of the fitting space 10 facing the outward direction of the lens portion 5 has a bottom surface that is flush with the bottom surface of the fitting space 10 and has a diameter substantially equal to the diameter of the spherical portion. The engaging recess 25 is provided as a through hole.

In the free state where the spectacles 2 are not worn, as shown by the solid line in FIG.
3 and the neck portion 15 are fitted into the corresponding openings 43 and 45, respectively, and the spherical portion 16 is fitted into the fitting space 10.
This fitting is performed in the same manner as described above while elastically deforming the lens portions 5 and 5 to expand the space between the fitting cavities 10 and 10. Then, due to the elastic restoration of both lens portions 5 and 5, an engaged state in which an outer portion (for example, approximately half of the spherical portion) 16a of the spherical portion 16 is fitted into the engaging recess (through hole) 25 is obtained. The strength of the engagement in this engagement state is that the spherical portion 16 is generated by elastic deformation of both lens portions 5 and 5 when a constant force is applied to the front eyeglasses 3 toward the front.
It is only to the extent that the engagement between and the engaging recess 25 can be released. Therefore, in this engaged state, the front eyeglasses 3 are temporarily fixed to the eyeglasses 2.

Then, when the spectacles 2 are worn, both temples 9 and 9 spread outward while elastically deforming the respective parts of the spectacles, and the temples 9 and 9 are fitted to the side of the head. Due to this expansion, the parts 5 on the outer side of both lens parts
a and 5a elastically bend and deform toward the front side.
As a result, the holding portions 7 and 7 facing each other firmly hold the front spectacles, and the distance between the holding portions is fixed during wearing of the spectacles, and there is no fear that the distance will increase. Therefore, the engagement state between the spherical portion 16 and the engagement recess 25 shown in FIG. 15 is not released, and the accidental detachment of the front spectacles 3 can be prevented.

In the present embodiment, since the prismatic pedestal 13 is fitted into the pedestal opening 43, the relationship between the horizontal planes 47, 47 that vertically oppose the pedestal and the inner surfaces 49, 49 that oppose the aperture. According to the combination, that is, by the engagement between the engaging portion provided on the engaging projection 12 and the engaging portion provided on the holding portion 7, the rotation of the front spectacles 3 in the vertical plane can be prevented.

When removing the front eyeglasses 3, a certain force is applied to the front eyeglasses in a forward direction with the eyeglasses removed to elastically deform both the lens portions 5 and 5 and the spherical portion 16 is removed. And the engaging recess 25 are disengaged.

16 to 17, engaging projection pieces 12 projecting from the left and right ends of the front spectacles 3 are fitted in a fitting space 10 of a holding portion 7 projecting from the outer side of the lens portion 5 of the spectacles. It shows a case where it is configured to be detachably fitted from the lower side to the upper side. The engaging projection 12 has the same structure as described above. The fitting space 10 has an upside down structure as compared with the case of the first embodiment. The fitting of the pedestal 13 and the neck portion 15 and the corresponding split groove and the fitting of the spherical portion 16 and the fitting space 10 in the free state in which the glasses 2 are not worn are in the direction of the fitting. However, the fitting procedure is the same as that described above, and the front spectacles 3 are temporarily fixed to the spectacles 2 when the spherical portion 16 is fitted into the engagement recess 25. Then, in the subsequent wearing state of the eyeglasses, the effect of preventing inadvertent detachment of the front eyeglasses 3 and the engagement between the engaging portion of the engaging projection 12 and the engaging portion of the holding portion 7 enable the acupuncture eyeglasses to be worn. The effect of preventing the rotation of 3 in the vertical plane is the same as described above. Further, the action of removing the front spectacles is similar to the above.

As described above, when the holding space is provided with the fitting space that opens downward, the fitting space can be prevented from appearing on the visible surface. As shown in FIG. 5, the upper portion of the split groove can be closed 48, which contributes to improving the aesthetics of the front-mounted glasses.

Also in the second embodiment in which the engaging projection 12 is formed in a prismatic shape, the fitting space may be opened forward. In that case, the engaging protrusion 12 is detachably fitted into the fitting space 10 from the front side to the rear side. Further, in the second embodiment, since the projection 37 at the tip of the engaging projection piece is fitted into the engaging recess 25, the fitting space may be opened downward. Good. In this case, the front eyeglasses 3 are temporarily fixed to the eyeglasses 2 by fitting the protrusions 37 into the engagement recesses 25.

The above-mentioned second in which the engaging protrusion is formed in a prismatic shape.
In the above embodiment, the front piece portion 31 that constitutes the holding portion 7 may be directly fixed to the lens rim.

In each of the above-described embodiments, since the end portion of the engaging projection piece is configured to be fitted into the engaging recess before wearing the eyeglasses, the engaging projection piece 12 is fitted. The possible mating cavity may be formed as a bottomless cavity. FIG. 18 shows the engagement protrusion 12 and the fitting space 10 in that case.
It shows an example of a fitted state with. In addition, when the fitting space is formed to have a bottom, there is an advantage that the engagement projection can be stably fitted into the engagement space while being supported by the bottom.

In each of the above-described embodiments, the case where the engagement protrusion is fitted into the engagement recess in the state before wearing the spectacles has been described. However, as shown in FIG. In this state, the engagement protrusion 12 may be configured not to engage with the engagement recess 25. In this case, the attachment / detachment operation of the spectacles front frame with respect to the spectacles before wearing becomes very easy. And in the state where the glasses 2 are worn, both temples are
With the elastic deformation of each part of the spectacles, the spectacles are spread outward and fitted to the temporal region. By this expansion, the outer end portions of both lens portions 5 and 5 are elastically bent and deformed toward the front side.

As a result, the spherical portion 1 of the engaging projection 12 is formed.
As shown in FIG. 20, the tip-side portion 16a of 6 fits into the engagement recess (through hole) 25, and as a result, the front eyeglasses 3
Even if the upper eyeglasses disengage upward, the front end side portion 16a of the spherical portion engages with the inner peripheral edge 50 of the engaging recess, and the front spectacles 3 are prevented from falling off. With the glasses removed,
Since each part of the eyeglasses elastically restores to the initial state, the engagement state between the spherical portion 16 and the engagement recess 25 is released, and the state shown in FIG.
Since the state returns to the state shown in (1), the eyeglasses 2 can be separated by lifting the front eyeglasses.

The configuration in which the engagement protrusion does not fit into the engagement recess before wearing the spectacles can be similarly adopted when the fitting cavity is opened toward the front of the spectacles.

The apron-type eyeglasses according to the present invention are shown in FIG.
It can also be applied for wearing flip-up apron glasses as shown in FIG. The flip-up type front spectacles 3 include a mounting rod 51 extending along the upper edges of the left and right lens portions 5 and 5 of the spectacles 2.
In addition, hinges 53, 53 in which a front hanging frame 52 having auxiliary lens portions 11, 11 capable of covering the left and right lens portions 5, 5 of the spectacles 2 from the front side thereof are arranged on the left and right of the middle portion of the mounting rod 51.
It is pivotally attached so that it can be flipped up through. Further, the engaging projection piece 12 projectingly provided on the outer side portion of the attachment rod 51 of the front eyeglasses 3 is configured in the same manner as in the first and second embodiments, and the engaging projection piece 12 is formed. Is fitted into an engaging recess 25 provided in the holding portion 7.

In the first embodiment, the engaging recess 25 is formed as a through hole, but as shown in FIG. 22, the engaging recess 25 engages with the distal end side portion 16a of the spherical portion 16 when the temple is expanded. It may be formed as a dimple. Further, in the second embodiment, the engaging recess may be formed as a through hole.

Since the front spectacles 3 are mounted in close proximity to the lens portion 5 of the spectacles, the rotation stopping means for engaging the pedestal 13 and the pedestal fitting portion as described above can be omitted. . In order to prevent this rotation, in the pedestal shown in FIG. 1, the upper and lower surfaces thereof may be formed as arc surfaces or the like instead of horizontal surfaces. Further, in the pedestal shown in FIG. 14, the front and rear surfaces thereof may be formed as arcuate surfaces or the like instead of horizontal surfaces.

[0047]

The present invention has the following excellent effects. According to the present invention, the front spectacles can be attached to and detached from the spectacles, and in the state where the spectacles are once worn, the strong engagement between the engagement protrusion and the engagement recess is maintained, so that the front The drop of the eyeglasses will be surely prevented. The structure for preventing the front spectacles from coming off does not utilize the elastic deformation of the leg members as in the above-mentioned conventional spectacles, and both temples elastically expand when the spectacles are fitted to the head. This is a simple structure that effectively utilizes the elastic deformation of the eyeglasses. Therefore, the apron-type eyeglasses of the present invention can be easily configured, and even if the apron-type eyeglasses are repeatedly attached and detached, there is no possibility of causing damage to the mounting structure portion.

In particular, when the engaging projection is configured to be fitted in the engaging space before wearing the glasses, the apron glasses are temporarily fixed to the glasses even before wearing the glasses. Since this can be done, there is an advantage that the handling of the front-mounted glasses can be improved.

When the engaging protrusion is provided with the engaging portion and the holding portion is provided with the engaging portion that engages with the engaging portion, the rotation of the front spectacles in the vertical plane can be prevented, Stabilize the wearing body of the front spectacles.

When the engaging recess is formed as a through hole, the engaging recess can be easily processed.

[Brief description of drawings]

FIG. 1 is a perspective view of front-wear type glasses in which the glasses and the front-wear glasses are disassembled and shown.

FIG. 2 is a perspective view illustrating a mounting structure of apron eyeglasses with respect to eyeglasses.

FIG. 3 is a perspective view showing a state in which front spectacles are attached to the spectacles.

FIG. 4 is a plan view thereof.

FIG. 5 is a plan view showing, in an enlarged manner, a mounting state of the apron eyeglasses on the eyeglasses.

FIG. 6 is a sectional view thereof.

FIG. 7 is a perspective view showing another aspect of the apron-type spectacles in which the spectacles and the apron-glasses are disassembled.

FIG. 8 is a perspective view for explaining a mounting structure of the front spectacles for the spectacles.

FIG. 9 is a perspective view illustrating an engaging protrusion of front spectacles.

FIG. 10 is a perspective view showing a state in which front spectacles are attached to the spectacles.

FIG. 11 is a plan view thereof.

FIG. 12 is an enlarged perspective view showing an attached state of the front eyeglasses with respect to the eyeglasses.

FIG. 13 is a sectional view thereof.

FIG. 14 is a perspective view illustrating another attachment structure of the front spectacles for the spectacles.

15 is a cross-sectional view showing a state in which apron glasses are attached to the glasses of FIG.

FIG. 16 is a perspective view for explaining another mode of attaching the front spectacles to the spectacles.

FIG. 17 is a cross-sectional view showing a state in which front spectacles are attached to the spectacles according to FIG.

FIG. 18 is a cross-sectional view illustrating another manner of attaching the apron glasses to the glasses.

FIG. 19 is a cross-sectional view illustrating another mode of attaching the front spectacles to the spectacles.

20 is a cross-sectional view showing an engagement state between the engagement protrusion and the engagement recess shown in FIG.

FIG. 21 is a side view illustrating a configuration in which flip-up front glasses are attached to the glasses.

FIG. 22 is a cross-sectional view illustrating another configuration of attaching front spectacles to spectacles.

FIG. 23 is a perspective view illustrating a conventional configuration for attaching front spectacles to spectacles.

FIG. 24 is a perspective view illustrating a conventional configuration in which front spectacles are attached to spectacles.

FIG. 25 is a plan view illustrating a problem of conventional apron-type glasses.

[Explanation of symbols]

 1 apron type eyeglasses 2 eyeglasses 3 apron glasses 5 lens section 6 connecting section 7 holding section 9 temple 10 fitting space 11 auxiliary lens section 12 engaging projection 16 spherical section 25 engaging recess

Claims (8)

[Claims] 1. In spectacles in which inner parts of the left and right lens parts are connected to each other by a connecting part and temples are attached to outer parts of both lens parts so as to extend rearward, the outer parts of the left and right lens parts are provided. , A holding portion projecting forward, each of the holding portions having an auxiliary lens portion capable of covering the left and right lens portions from the front surface side thereof A fitting space is provided in which the piece can be removably fitted, and an inner surface of the fitting space, on the side of the lens portion facing the outward direction, of the auxiliary projection of the engaging projection piece. In the state before wearing the spectacles, both engaging projections are fitted into the respective engaging recesses so that the front spectacles are fitted to each other. It is designed to be held by a holding part, and when both temples expand when wearing glasses. , Apron eyeglasses which outer side portions of both the lens unit, characterized in that deformation bend elastically toward the front side so as to reduce the distance between the engaging recesses of the facing. 2. A pair of spectacles in which inner parts of the left and right lens parts are connected to each other by a connecting part, and temples are attached to outer parts of both lens parts so as to extend rearward. , A holding portion projecting forward, each of the holding portions having an auxiliary lens portion capable of covering the left and right lens portions from the front surface side thereof A bottomed fitting cavity is provided that allows the piece to be removably fitted in the state of being dropped, and on the inner surface of the fitting cavity, the surface portion of the lens portion facing outward.
The engaging projection is provided with an engaging recess into which a portion of the engaging lens toward the outside of the auxiliary lens portion can be fitted. The side portion is elastically bent and deformed toward the front side so as to reduce the distance between the facing engagement recesses, so that both engagement projections are fitted into the engagement recesses,
Front-wear type eyeglasses, characterized in that the front-wear type eyeglasses are prevented from falling off. 3. In the spectacles in which the inner parts of the left and right lens parts are connected by a connecting part, and temples are attached to the outer parts of both lens parts so as to extend rearward, the outer parts of the left and right lens parts are provided. , A holding portion projecting forward, each of the holding portions having an auxiliary lens portion capable of covering the left and right lens portions from the front surface side thereof A piece is provided with a fitting space that can be detachably fitted from the front side to the rear side, and in the inner surface of the fitting space, the surface portion on the side toward the outside of the lens portion,
The engaging projection is provided with an engaging recess into which a portion of the engaging lens toward the outside of the auxiliary lens portion can be fitted. The side portion is elastically bent and deformed toward the front side so as to reduce the distance between the facing engagement recesses, so that both engagement projections are fitted into the engagement recesses,
The front-wear type eyeglasses are characterized in that the front-wear glasses are prevented from falling off toward the front. 4. The apron-type eyeglasses according to claim 1, wherein a portion of the engaging projection piece on a side of the auxiliary lens portion facing outward is formed into a spherical shape. 5. A portion of the engagement projection piece on the side facing the outer direction of the auxiliary lens portion is formed in a hemispherical shape of a protrusion toward the outer direction of the auxiliary lens portion. The eye-worn glasses according to any one of 3 to 3. 6. The engaging protrusion is provided with an engaging portion,
The apron according to any one of claims 1 to 3, wherein the retaining part is provided with an engaging part that engages with the engaging part and prevents rotation of the apron glasses in a vertical plane. Ceremony glasses. 7. The front-mounted eyeglasses according to claim 1, wherein the engagement recess is formed as a through hole that penetrates the holding portion toward the outside of the lens portion. . 8. The front-mounted eyeglasses according to claim 1, wherein the engagement recess is formed as a recess.