JP5243329B2 - Dustproof equipment for glasses - Google Patents

Description

  The present invention relates to a spectacle dustproof device that is detachably locked to spectacles, and in particular, inexpensive spectacles that effectively perform a dustproof function such as protecting eyes from pollen while wearing spectacles. It relates to a dustproof device.

  Conventionally, various dustproof glasses have been proposed in order to protect eyes from dust, flying, wind pressure, etc. in addition to pollen (see, for example, Patent Documents 1 and 2).

  As shown in FIG. 10, for example, conventionally proposed dustproof eyeglasses 101 can be worn as eyeglasses and can be fixed to the face part so that the earpiece part is curved to be engaged with the ear. It is the structure provided with the temple 102 which has. Here, for a wearer of spectacles (particularly problematic in the case of prescription spectacles), in order to wear the dustproof spectacles 101 so as to protect the eyes from pollen or the like, the spectacle spectacles to be worn are further applied from above the prescription spectacles. It is necessary to wear the dustproof glasses 101 or to wear the dustproof glasses 101 after removing the worn glasses.

  However, when the dust-proof glasses 101 are further worn on the prescription glasses, the temples of the prescription glasses and the temples 102 of the dust-proof glasses 101 overlap, so that not only a sense of incongruity is generated, but also the temple 102 of the dust-proof glasses 101 There is a problem in that the dust-proof function is impaired because it is not in close contact with the ear and is likely to come off or be displaced. In addition, since the prescription glasses and the dustproof glasses 101 are separate bodies and are not linked to each other, it is difficult to adjust the mounting position of each other, and thus a wide gap is easily generated between the dustproof glasses 101 and the face. As a result, there is also a problem that the dustproof function is impaired. In order to suppress such a decrease in dust-proof function as much as possible, if the front frame 103 of the dust-proof glasses 101 is excessively pressed to the face side, the prescription glasses are also excessively pressed to the face side, resulting in increased feeling of pressure and wearing There is also the problem of giving discomfort to the person.

  On the other hand, when the dust-proof glasses 101 are worn after removing the worn glasses, the above problem does not occur, but it is not practical because of the problem of reduced visual acuity. Although a configuration in which the dustproof glasses 101 themselves are prescription glasses can be considered, there is a problem that costs are increased.

  Therefore, it is desired to propose a dustproof tool for spectacles that can be detachably locked to spectacles (glasses with degree).

  Here, as what has the structure which can be detachably latched with respect to spectacles, what is called front spectacles is proposed conventionally (for example, refer to patent documents 3).

  However, these front spectacles have been proposed for the purpose of obtaining the state of wearing sunglasses or for the purpose of correcting the visual acuity of prescription spectacles, and can be detachably locked to the spectacles. However, it does not provide any dustproof function for the glasses.

JP-A-10-328230 JP 2001-343618 A Utility Model Registration No. 3057852

  The present invention has been made to solve the problems of the prior art, and effectively exhibits a dustproof function such as protecting eyes from pollen in a state in which spectacles (particularly spectacles) are worn. It is an object to provide an inexpensive dustproof tool for spectacles.

The present invention is a spectacle dustproof tool that is detachably locked to spectacles including a pair of left and right lenses and a pair of left and right rims that hold the pair of left and right lenses. In this state, the pair of left and right cylindrical members positioned behind the pair of left and right lenses and the upper and lower portions of each cylindrical member project to the front position of the front peripheral edge of each cylindrical member. And a locking portion for locking each cylindrical member to the outer peripheral portion of each lens or the outer peripheral portion of each rim, and each cylindrical member has flexibility. A cut portion cut from the front peripheral portion to the rear peripheral portion is provided on the left or right side of the side wall portion of each cylindrical member , and each locking portion is an outer peripheral portion of the lens. Or a slider that can be locked to the outer periphery of the rim; A guide that is attached to the cylindrical member and that guides the slider so as to be movable in the front-rear direction so that the amount of protrusion of the slider forward relative to the front peripheral edge of the cylindrical member can be adjusted; Provided is a spectacle dustproof device comprising an inhibition portion that inhibits movement .

The present invention provides a dustproof tool for eyeglasses that can also be applied to rimless eyeglasses. Specifically, the present invention is a spectacle dust protector that is detachably locked to a rimless eyeglass that includes a pair of left and right lenses, and in the state that it is locked to the rimless eyeglass, A pair of left and right cylindrical members respectively positioned behind the pair of lenses, and attached to the upper and lower portions of each cylindrical member so as to protrude to the front position of the front peripheral edge of each cylindrical member, A locking portion for locking each cylindrical member on an outer peripheral portion of each lens, and each cylindrical member has flexibility, and is either left or right of the side wall portion of each cylindrical member. The one side part is provided with a cutting part cut from the front peripheral part to the rear peripheral part , and each locking part is provided with a slider that can be locked to the outer peripheral part of the lens, and the cylindrical member. Attached and front to the front peripheral edge of the tubular member Adjustably projection amount of the slider into the guide for movably guiding the slider in the longitudinal direction, dustproof device for eyeglasses comprising: a link between inhibition unit which inhibits the movement of the front and rear direction of the slider I will provide a.

  In the above-described spectacle dust protectors according to the present invention, the pair of left and right cylindrical members are the outer peripheral portions of the pair of left and right lenses of the spectacles provided with the rim by the locking portions attached to the respective cylindrical members. Or it is latched by the outer peripheral part of each pair of left and right rims of spectacles including a rim, or the outer peripheral part of each pair of left and right lenses of rimless spectacles. Each latching part protrudes to the front position of the front peripheral part of each cylindrical member. For this reason, when each cylindrical member is locked to the outer peripheral part of each lens or the outer peripheral part of each rim, the cylindrical member is positioned behind each lens or each rim. When each cylindrical member is positioned behind each lens or each rim, the front of the space inside each cylindrical member is closed by each lens or each rim. In addition, since each cylindrical member is located behind each lens or each rim, when each cylindrical member is attached to the outer peripheral part of each lens or the outer peripheral part of each rim, The rear peripheral edge abuts around the left and right eyes of the wearer, and the rear of the space inside each cylindrical member is closed by the wearer's face. Therefore, in the state where each cylindrical member wears spectacles locked to the outer peripheral portion of each lens or the outer peripheral portion of each rim, the left and right eyes of the wearer are connected to each cylindrical member and each lens or each Covered by a rim, the dustproof tool for glasses according to the present invention exhibits a dustproof function.

  In addition, if each cylindrical member is locked to the outer peripheral part of each degree lens or the outer part of each rim of the degree eyeglass and the degree eyeglass is attached, a dustproof function is achieved and Correction of visual acuity with a prescription lens is possible. For this reason, even if the dustproof tool for spectacles according to the present invention does not include a lens with a degree, it is possible to correct vision. Therefore, the dustproof tool for spectacles according to the present invention does not need to be provided with a lens with a degree, and can be manufactured at low cost.

  Moreover, each cylindrical member of the spectacle dust-proof device according to the present invention has flexibility, and a cut portion cut from the front peripheral portion to the rear peripheral portion at the left or right side portion of the side wall portion. Is provided. For this reason, the distance between the upper and lower engaging portions attached to the upper and lower portions of each cylindrical member can be increased by separating the upper and lower portions sandwiching the cut portion of each cylindrical member. . Therefore, for example, each cylindrical member can be locked to the outer peripheral portion of each lens or the outer peripheral portion of each rim as follows. Separate the upper and lower sides of the cut part of each cylindrical member so that the distance between the upper and lower locking parts is larger than the vertical dimension of each lens or rim, and between the upper and lower locking parts. Each lens or each rim is positioned on the lens, the distance between the upper and lower locking portions is reduced, and the upper and lower locking portions are locked to the outer peripheral portion of each lens or the outer peripheral portion of each rim. The shaped member can be locked to the outer peripheral portion of each lens or the outer peripheral portion of each rim. When the distance between the upper and lower engaging portions is larger than the vertical dimension of each lens or each rim, each lens or each rim can be easily positioned between the upper and lower engaging portions, and the outer circumference of each lens. Each cylindrical member can be easily locked to the outer peripheral portion of each part or each rim. Therefore, the dustproof tool for glasses according to the present invention can be easily locked to the glasses.

  In addition, by adjusting the distance between the upper and lower locking portions according to the vertical dimension of the outer peripheral part of each lens or the outer peripheral part of each rim, the outer peripheral part of each of a plurality of types of lenses having different vertical dimensions Or each cylindrical member can be latched to the outer peripheral part of each rim. Therefore, the dustproof tool for spectacles according to the present invention can be applied to a plurality of types of spectacles having different dimensions in the vertical direction of the lens or rim.

Further, the slider provided in each locking part of the spectacle dustproof device according to the present invention can be locked to the outer peripheral part of each lens or the outer peripheral part of each rim , and forward to the front peripheral edge part of each cylindrical member. It is guided to be movable in the front-rear direction so that the amount of protrusion can be adjusted. If the amount of protrusion of the slider is adjusted according to the dimension in the thickness direction of the outer periphery of each lens or the outer periphery of each rim, each cylindrical member has a different dimension in the thickness direction of the outer periphery. Can be locked. Therefore, the dustproof tool for spectacles according to the present invention can be applied to a plurality of types of spectacles having different dimensions in the thickness direction of the outer peripheral portion of the lens or the outer peripheral portion of the rim. Furthermore, each latching part of the dustproof tool for spectacles concerning this invention is provided with the obstruction part which inhibits the movement of the front-back direction of a slider. For this reason, in the dustproof tool for spectacles according to the present invention , the slider moves unexpectedly forward, and the amount of forward protrusion of the slider increases, so that the slider and the outer periphery of the lens or the slider and the outer periphery of the rim Therefore, the eyeglass dust-proof device according to the present invention can be attached to the eyeglasses in a stable state.

  Preferably, the left and right side portions of the side wall portion sandwiching the cutting portion are connected by elastic bodies.

  Since the upper and lower side portions sandwiching the cut portion are connected by the elastic body, when the upper and lower side portions are separated by a predetermined distance or more, the elastic body expands and contraction force is generated in the elastic body. For this reason, in such a preferable configuration, it is difficult for the portions on the upper and lower sides to be excessively separated from each other, and the tubular members are prevented from being damaged by excessively separating the portions on the upper and lower sides. In addition, the outer periphery of each lens and the outer periphery of each rim are larger in the vertical direction than the distance between the upper and lower engaging parts when an external force that separates the upper and lower parts is not applied to each cylindrical member. To lock each cylindrical member to the part, separate the upper and lower side parts, and make the distance between the upper and lower locking parts equal to the vertical dimension of each lens and each rim to be locked There is a need to. When the upper and lower parts are separated from each other, the restoring force for returning the distance between the upper and lower parts to the original length, and the contraction force generated in the elastic body by separating the upper and lower parts, As described above, the parts on the upper and lower sides are prevented from separating. For this reason, according to such a preferable configuration, the portions on both the upper and lower sides are larger than when the cylindrical members are locked to the outer peripheral portion of each lens or the outer peripheral portion of each rim having a large vertical dimension as described above. The engagement between the outer peripheral portion of each lens or the outer peripheral portion of each rim and each engaging portion is more reliably prevented from being separated. Therefore, according to such a preferable configuration, the dustproof tool for spectacles according to the present invention can be locked to the spectacles having the lens or rim having a large vertical dimension as described above in a more stable state.

  Preferably, it is set as the structure by which the water retention member is attached to the inner surface of the said side wall part of each said cylindrical member.

  According to such a preferable configuration, when moisture is absorbed by the water retaining member, the humidity in the space inside each cylindrical member that covers the wearer's eyes can be appropriately maintained, and the onset of dry eye can be prevented.

  INDUSTRIAL APPLICABILITY The present invention can provide an inexpensive eyeglass dustproof device that effectively exhibits a dustproof function such as protecting eyes from pollen while wearing eyeglasses.

FIG. 1 is an external view of spectacles in which a spectacle dust protector according to this embodiment is locked. FIG. 1A shows a front view. FIG.1 (b) shows a top view. FIG.1 (c) shows AA sectional drawing of Fig.1 (a). FIG. 2 is an external view of a spectacle dust protector. FIG. 2A shows a front view. FIG. 2B shows a plan view. FIG. 3 is a diagram showing a state in which the upper and lower portions on both sides of the cutting portion are separated. Fig.3 (a) shows the front view of the dustproof tool for spectacles. FIG. 3B is a diagram for explaining that the rim is moved between the upper and lower locking portions. FIG. 4 is a front view of a half-rim type eyeglass with the eyeglass dust guard locked. FIG. 5 is a front view of the rimless eyeglasses with the eyeglass dust guards locked thereto. FIG. 6 is a side view of the spectacle dustproof device. FIG. 7 is a diagram showing one specific configuration of the locking portion. FIG. 7A shows a perspective view of one of a pair of left and right cylindrical members of the dustproof tool for spectacles and a locking portion attached to the cylindrical member. FIG.7 (b) shows BB sectional drawing of Fig.7 (a). FIG. 8 is a front view of one of the pair of left and right cylindrical members and a locking portion attached to the cylindrical member. FIG. 8A shows a state in which the upper and lower portions on both sides of the cut portion are in contact with each other. FIG. 8B and FIG. 8C show a state in which the upper and lower portions sandwiching the cutting portion are separated from each other. FIG. 9 is a front view of one of a pair of left and right cylindrical members and a locking portion attached to the cylindrical member. Fig.9 (a) shows the state which the site | part of the up-and-down both sides which pinched | interposed the cutting part is contacting. FIG. 9B shows an enlarged view of the vicinity of the cut portion viewed from the arrow X direction shown in FIG. FIG. 10 is a schematic configuration diagram of conventional dustproof glasses.

  FIG. 1 is an external view of spectacles 5 in which a spectacle dust protector 1 according to this embodiment is locked, FIG. 1 (a) shows a front view, FIG. 1 (b) shows a plan view, and FIG. (C) shows AA sectional drawing of Drawing 1 (a). FIG. 2 is an external view of the spectacle dust protector 1, FIG. 2 (a) shows a front view, and FIG. 2 (b) shows a plan view. As shown in FIG. 1, the glasses 5 include a pair of left and right lenses 51, a pair of left and right rims 52 that hold the lenses 51 and are disposed over the entire outer periphery of each lens 51, and each rim 52. A pair of left and right nose pads 53 attached and a pair of left and right temples 54 connected to each rim 52 via a pair of left and right armor 55 and the like are provided. The material of each rim 52 is not particularly limited, and may be metal, celluloid, or the like.

  On the other hand, as shown in FIGS. 1 and 2, the spectacle dustproof device 1 includes a pair of left and right cylindrical members 2 and a locking portion 3 that locks each cylindrical member 2 to the outer peripheral portion of each rim 52. I have. In addition, the material of each cylindrical member 2 and each latching | locking part 3 can be made into a polyamide-type resin.

  As shown in FIG. 1A to FIG. 1C, each cylindrical member 2 is positioned behind each lens 51 (the wearer wears the glasses 5 in a state where it is locked to the outer peripheral portion of each rim 52. When mounted, each lens 51 is positioned on the face side of the wearer's face), and the peripheral portions 21 and 22 of each cylindrical member 2 are oriented in the front-rear direction. A peripheral portion 21 (hereinafter referred to as “front peripheral portion 21”) located on the front side is in contact with the rear surface of each lens 51 or the rear surface of each rim 52.

  As shown in FIG.1 (c) and FIG.2 (a), each cylindrical member 2 has flexibility, and in the site | part on either the right or left side of the side wall part 23 of each cylindrical member 2, A cutting portion 24 cut from the front peripheral portion 21 to another peripheral portion 22 (hereinafter referred to as “rear peripheral portion 22”) is provided. The left or right side portion of the side wall portion 23 refers to the side wall portion of each cylindrical member 2 when the wearer wears the glasses 5 in which each cylindrical member 2 is locked to the outer peripheral portion of each rim 52. 23 is an end on either the left or right side of 23 and a portion located in the vicinity of the end. In the present embodiment, as shown in FIG. 2A, the left or right side portion of the side wall portion 23 of the left tubular member 2 is in the vicinity of the right end portion of the side wall portion 23, and the right end portion. A cutting portion 24 is provided in the vicinity. In the present embodiment, the right or left side portion of the side wall portion 23 of the right tubular member 2 is in the vicinity of the left end portion of the side wall portion 23, and the cutting portion 24 is provided in the vicinity of the left end portion. ing.

  FIG. 3 is a diagram illustrating a state in which the upper and lower portions 24 a and 24 b sandwiching the cutting portion 24 are separated from each other. FIG. 3A shows a front view of the spectacle dust protector 1, and FIG. 3B shows that the rim 52 is moved between the locking portions 3 attached to the upper and lower portions of the cylindrical member 2. The figure for demonstrating is shown. As shown in FIG. 3A, each tubular member 2 has flexibility as described above, and is provided with a cutting portion 24. Therefore, each tubular member 2 is cut. The wearer wears the glasses 5 in which the tubular members 2 are locked to the upper portion of each tubular member 2 (the outer peripheral portion of each rim 52 is spaced apart from the upper and lower portions 24 a and 24 b across the portion 24. When the wearer wears the glasses 5 with the tubular members 2 locked to the outer peripheral portion of each rim 52 and the lower portion (the portion positioned above the cutting portion 24) when worn. The distance between the cutting portion 24 and a portion located below the cutting portion 24 can be increased. Moreover, as shown in FIG.1 (c), the side wall part 23 of each cylindrical member 2 is shortened in the front-back direction in a part of the circumferential direction so that it may not interfere with the nose pad 53.

  As shown in FIG. 1C, the locking portion 3 is attached to the upper and lower portions of each cylindrical member 2. As described above, in each cylindrical member 2, the distance between the upper part and the lower part is increased by separating the upper and lower parts 24a and 24b sandwiching the cutting portion 24 of each cylindrical member 2. can do. For this reason, the distance between the locking portions 3 attached to the upper and lower portions of each cylindrical member 2 can be reduced by separating the upper and lower portions 24a and 24b across the cut portion of each cylindrical member 2. Can be bigger. Each locking portion 3 protrudes to the front position of the front peripheral edge portion 21 of each cylindrical member 2. Each locking portion 3 is attached to the outer surface 23 b of the side wall portion 23 of the cylindrical member 2, and protrudes to the front position of the front peripheral edge portion 21 of the cylindrical member 2. A tip end portion 32 provided at the front end and bent so as to face the radially inward direction of each tubular member 2. Further, the locking portion 3 attached to each cylindrical member 2 may be formed integrally with each cylindrical member 2. In FIG. 2 (a), two locking portions 3 are attached to the upper part of each cylindrical member 2 and two locking parts 3 are attached to the lower part. The number of the locking portions 3 attached is not particularly limited as long as it is 1 or more.

  Next, locking the spectacle dustproof tool 1 described above to the spectacles 5 will be described. First, as shown in FIG. 3 (a), the upper and lower portions 24a and 24b sandwiching the cut portion 24 of each cylindrical member 2 are separated, and the distance between the upper and lower engaging portions 3 is set to each rim. It is larger than the vertical dimension of 52. Next, as shown in FIG. 3B, each cylindrical member 2 is moved forward from the rear of each rim 52, and each lens 51 and each rim 52 are positioned between the upper and lower locking portions 3. Next, as shown in FIG. 1 (c), the upper and lower portions sandwiching the cut portions 24 of the respective cylindrical members 2 until the base end portions 31 of the upper and lower engaging portions 3 are in contact with the outer peripheral portion of the rim 52. 24a and 24b are brought close to each other. Thereby, the front-end | tip part 31 of the up-and-down latching | locking part 3 turns around ahead of the outer peripheral part of each rim | limb 52, each cylindrical member 2 is latched by the outer peripheral part of each rim | limb 52, and the dustproof tool 1 for glasses is the spectacles 5 It is locked to.

  On the other hand, in a state where the spectacle dust protector 1 is locked to the spectacles 5, the upper and lower portions 24 a and 24 b sandwiching the cut portions 24 of the respective cylindrical members 2 are separated, and the space between the upper and lower lock portions 3 is separated. The spectacle dust protector 1 can be removed from the spectacles 5 by making the distance larger than the vertical dimension of each rim 52 and moving each tubular member 2 rearward with respect to each rim 52.

  As described above, each cylindrical member 2 is locked to the outer peripheral portion of each rim 52 by the locking portion 3 attached to each cylindrical member 2. Each locking portion 3 protrudes to the front position of the front peripheral edge 21 of each cylindrical member 2. For this reason, as shown in FIG. 1, each cylindrical member 2 is positioned behind each rim 52 in a state where it is locked to the outer peripheral portion of each rim 52. When each tubular member 2 is positioned behind each rim 52, the front of the space inside each tubular member 2 is blocked by each lens 51 and each rim 52. Further, since each cylindrical member 2 is located behind each rim 52, when each of the cylindrical members 2 is fitted with glasses 5 locked to the outer peripheral portion of each rim 52, the rear peripheral portion of each cylindrical member 2 is attached. 22 abuts around the left and right eyes of the wearer, and the rear of the space inside each cylindrical member 2 is blocked by the wearer's face. Therefore, in the state where each cylindrical member 2 wears the glasses 5 locked to the outer peripheral portion of each rim 52, the left and right eyes of the wearer are connected to each cylindrical member 2 and each lens 51 or each rim. The eyeglass dustproof tool 1 has a dustproof function.

  In addition, since the dustproof function is exhibited with the glasses 5 attached as described above, when each lens 51 of the glasses 5 is a prescription lens, the visual acuity of the prescription lens can be reduced with the dustproof function. Correction is possible. For this reason, even if the spectacle dust protector 1 does not include a prescription lens, it is possible to correct the visual acuity. Therefore, the dustproof tool 1 for glasses does not need to be provided with a lens with a degree, and can be manufactured at low cost.

  Further, as described above, when each cylindrical member 2 is locked to the outer peripheral portion of the rim 52, if the distance between the upper and lower locking portions 3 is increased, each rim is interposed between the upper and lower locking portions 3. 52 can be easily positioned, and the locking of each tubular member 2 to the outer peripheral portion of each rim 52 is facilitated. Therefore, the spectacle dustproof tool 1 can be easily locked to the spectacles 5.

  In addition, by adjusting the distance between the upper and lower locking portions 3 according to the vertical dimension of the outer peripheral portion of each rim 52, each cylindrical member has a plurality of types of rims 52 having different vertical dimensions. 2 can be locked. Therefore, the dustproof tool 1 for glasses can be applied to a plurality of types of glasses having different vertical dimensions of the rim 52.

  The spectacle dust protector 1 can also be applied to half-rim type spectacles in which a pair of left and right rims are disposed only in the upper half or the lower half of the outer peripheral portion of each pair of left and right lenses. FIG. 4 is a front view of the half rim type eyeglasses 6 in which the eyeglass dustproof device 1 is locked. As shown in FIG. 4, in the half rim type glasses 6 in which the rims 62 are provided only in the upper half of the outer periphery of each lens 61, the rim 62 is provided in the lower half of the outer periphery of each lens 61. Not. For this reason, the latching | locking part 3 attached to the site | part of each cylindrical member 2 latches each cylindrical member 2 to the outer peripheral part of each lens 61. FIG. Although not shown, in the half rim type glasses in which each rim is disposed only in the lower half of the outer peripheral portion of each lens, the rim is not disposed in the upper half of the outer peripheral portion of each lens. For this reason, the latching | locking part 3 attached to the site | part of the upper side of each cylindrical member 2 latches each cylindrical member 2 to the outer peripheral part of each lens.

  FIG. 5 is a front view of the rimless spectacles 7 in which the spectacle dust protector 1 is locked. As shown in FIG. 5, the spectacle dustproof device 1 can be applied to the rimless spectacles 7 in which no rim is provided on the outer peripheral portion of each lens 71. Since the rimless spectacles 7 are not provided with rims on the outer peripheral portions of the respective lenses 71, the locking portions 3 attached to the upper and lower portions of the respective cylindrical members 2 are respectively connected to the outer peripheral portions of the respective lenses 61. 2 is locked.

  In addition, as shown in FIGS. 2A and 2B, the water retaining member 4 may be attached to the inner surface 23 a of the side wall portion 23 of each cylindrical member 2. If the water retaining member 4 is allowed to absorb moisture, the humidity in the space inside each tubular member 2 covering the left and right eyes of the wearer can be kept moderate, and the onset of dry eyes can be prevented. The water retaining member 4 may be one that absorbs moisture and naturally evaporates. For example, felt, paper, sponge, sponge or the like can be used as the water retaining member 4.

  In the present embodiment, as shown in FIGS. 1C and 3B, the base end portion 31 of the locking portion 3 is attached to the outer surface 23 b of the side wall portion 23 of each tubular member 2. And the attachment position of the base end part 31 in each cylindrical member 2 is not limited. FIG. 6 is a side view of the spectacle dustproof device 1. As shown in FIG. 6, the base end portion 31 may be attached to the outer peripheral portion 21 a of the front peripheral portion 21 of each cylindrical member 2. As described above, even when the base end portion 31 is attached to the outer peripheral portion 21a of the front peripheral portion 21, in the state where each cylindrical member 2 is locked to each lens or each rim, the front peripheral portion 21 The inner peripheral portion 21b contacts the rear surface of each lens or the rear surface of each rim, and the front of the space inside each cylindrical member 2 is closed by each lens or each rim. Therefore, even if the base end portion 31 is attached to the outer peripheral portion 21 a of the front peripheral portion 21, the base end portion 31 of the locking portion 3 is attached to the outer surface 23 b of the side wall portion 23 of each cylindrical member 2. As in the case where it is provided, a dustproof function is achieved. Further, when the base end portion 31 is attached to the outer peripheral portion 21 a of the front peripheral portion 21, the locking portion 3 does not protrude in the radially outward direction of each tubular member 2 from the outer surface 23 b of the side wall portion 23, and the dustproof tool for glasses The design of 1 is good, and it becomes difficult for other things to be caught on the locking portion 3.

  FIG. 7 is a diagram showing one specific configuration of the locking portion 3. FIG. 7A shows a perspective view of one of the pair of left and right cylindrical members 2 of the dustproof tool 1 for glasses and the locking portion 3 attached to the cylindrical member 2. FIG.7 (b) shows BB sectional drawing of Fig.7 (a). As shown in FIG. 7, the locking portion 3 is attached to the cylindrical member 2 and the slider 31 that can be locked to the outer peripheral portion of the lens or the outer peripheral portion of the rim, and is forward of the front peripheral portion 21 of the cylindrical member 2. A guide 32 that guides the slider 31 so as to be movable in the front-rear direction and an inhibition portion 33 that inhibits the movement of the slider 31 in the front-rear direction can be configured so that the amount of protrusion of the slider 31 to the front can be adjusted. In FIG. 7, one locking portion 3 having a specific configuration is attached to the upper part of the tubular member 2 and two to the lower part. The number of the locking portions 3 attached is not particularly limited as long as it is 1 or more.

  The slider 31 extends in the front-rear direction and is bent so that the front end portion faces the radially inward direction of the tubular member 2.

  The guide 32 is formed with a guide groove 321 extending in the front-rear direction for guiding the slider 31 so as to be movable in the front-rear direction. A slider 31 is inserted into the guide groove 321 so as to be movable in the front-rear direction.

  The inhibition part 33 has a concavo-convex structure 331 formed on the surface of the slider 31 and a protrusion 332 that protrudes from the guide 32 toward the concavo-convex structure 331. The concavo-convex structure 331 is a structure in which convex portions and concave portions are alternately arranged in the front-rear direction, and is formed in a portion of the surface of the slider 31 facing the guide 32. When the uneven structure 331 is formed on the surface of the slider 31 that faces each cylindrical member 2, the protruding portion 332 is configured to protrude from each cylindrical member 2. As shown in FIG. 7B, the protrusion 332 fits into the concave portion of the concavo-convex structure 331, and the movement of the slider 31 in the front-rear direction is inhibited by the convex portion and the protrusion 332 of the concavo-convex structure 331. The slider 31 is pulled back and forth by pulling the slider 31 in the front-rear direction with such a force that the protrusions or protrusions 332 of the uneven structure 331 are elastically deformed by pressing the protrusions and protrusions 332 of the uneven structure 331 against each other. Can be moved to.

  As described above, in such a specific configuration, since the slider 31 can move in the front-rear direction, the protrusion amount Q of the slider 31 forward relative to the front peripheral edge 21 of the tubular member 2 can be adjusted. For this reason, the slider 31 can be locked to the outer peripheral portion of the plurality of types of lenses 81 or the outer peripheral portion of the rim 82 having different dimensions in the thickness direction. Therefore, according to such a specific configuration, the spectacle dustproof device 1 can be applied to a plurality of types of spectacles having different dimensions in the thickness direction of the outer peripheral portion of the lens 81 or the outer peripheral portion of the rim 82.

  In addition, in the specific configuration, since the inhibition portion 33 is provided, for example, in the state where the glasses are worn, the slider 31 unexpectedly moves forward due to the weight of the slider 31 or the movement of the wearer's face, The protrusion amount Q of the slider 31 is difficult to increase. For this reason, in such a specific configuration, the protrusion amount Q of the slider 31 increases unexpectedly, so that the locked state between the slider 31 and the outer periphery of the lens 81 or between the slider 31 and the outer periphery of the rim 82 is difficult to be released. The dustproof tool 1 for glasses can be attached to the glasses in a stable state.

  Moreover, the inhibition part 33 can also be comprised with the elastic body engage | inserted by the guide groove 321 so that a through-hole may face the front-back direction. A slider 31 is inserted into the through hole. In this case, by designing the diameter of the through hole so that the slider 31 is fastened to the elastic body, the movement of the slider 31 in the front-rear direction can be inhibited by the frictional force between the slider 31 and the elastic body.

  FIG. 8 is a front view of one of the pair of left and right cylindrical members 2 of the eyeglass dust protector 1 and the locking portion 3 attached to the cylindrical member 2. FIG. 8A shows a state in which the upper and lower portions 24 a and 24 b sandwiching the cutting portion 24 are in contact with each other. FIG. 8B and FIG. 8C show a state where the parts 24 a and 24 b on both the upper and lower sides sandwiching the cutting part 24 are separated. As shown in FIG. 8A, the cutting part 24 is sandwiched in the part on the side where the cutting part 24 is provided among the left and right parts of the side wall part 23 of each of the left and right tubular members 2. The upper and lower portions 24 a and 24 b may be connected by the elastic body 9. As the elastic body 9, for example, silicon can be used.

  As shown in FIG. 8 (b), the upper and lower portions 24a and 24b sandwiching the cutting portion 24 are connected by the elastic body 9, thereby separating the upper and lower portions 24a and 24b by a predetermined distance or more. Then, the elastic body 9 expands and contraction force is generated in the elastic body 9. For this reason, when the upper and lower parts 24a and 24b are connected by the elastic body 9, the upper and lower parts 24a and 24b are not easily separated from each other, and the upper and lower parts 24a and 24b are excessively separated. Each cylindrical member 2 is prevented from being damaged.

  In addition, the vertical dimension is larger than the distance between the upper and lower locking portions 3 in the state where an external force that separates the upper and lower portions 24 a and 24 b across the cutting portion 24 is not applied to each cylindrical member 2. In order to lock each cylindrical member 2 to the outer periphery of each large lens or the outer periphery of each rim, the distance between the upper and lower locking portions 3 is locked by separating the upper and lower portions 24a and 24b. It is necessary to make it the same as the vertical dimension of each target lens and each rim. When the upper and lower parts are separated from each other, the elastic body 9 has a restoring force for returning the distance between the upper and lower parts 24a and 24b to the original length and the upper and lower parts 24a and 24b are separated. The contraction force generated prevents the portions 24a and 24b on both the upper and lower sides from separating further. For this reason, the parts 24a and 24b on both the upper and lower sides are unexpectedly separated from each other more than when the cylindrical members 2 are locked to the outer peripheral part of each lens or the outer peripheral part of each rim having a large vertical dimension as described above. Thus, the locking state between the outer peripheral portion of each lens or the outer peripheral portion of each rim and each locking portion 3 is more reliably prevented. Therefore, when the upper and lower parts 24a and 24b are connected by the elastic body 9, the spectacle dust protector 1 is more stably engaged with the glasses having the lens or rim having a large vertical dimension as described above. You can stop.

  Examples of the form in which the upper and lower portions 24 a and 24 b sandwiching the cutting portion 24 are connected by the elastic body 9 include the following. As one form, as shown in FIG. 8B, one end portion of the elastic body 9 is formed on the outer surface 23b of the side wall portion 23 of the one side portion 24a of the cutting portion 24, and the side wall portion 23 of the other side portion 24b. The form by which the other end part of the elastic body 9 is attached to the outer surface 23b is mentioned. As another form, as shown in FIG. 8C, one end of the elastic body 9 is located on the surface 24c facing the other side 24b in the one side 24a of the cutting portion 24, and the other side. The form by which the other end part of the elastic body 9 is attached to the surface 24d facing the one side site | part 24a in 24b is mentioned.

  FIG. 9 is a front view of one of the pair of left and right cylindrical members 2 of the eyeglass dust protector 1 and the locking portion 3 attached to the cylindrical member 2. FIG. 9A shows a state where the upper and lower portions 24 a and 24 b sandwiching the cutting portion 24 are in contact with each other. FIG. 9B shows an enlarged view of the vicinity of the cutting portion 24 viewed from the direction of the arrow X shown in FIG. As another example of connecting the upper and lower portions 24a and 24b sandwiching the cutting portion 24 with the elastic body 9, as shown in FIG. 9, through holes formed in the upper and lower portions 24a and 24b, respectively. The form which inserts the ring-shaped elastic body 9 in 25a, 25b is mentioned. In addition, as shown in FIG.9 (b), in the side wall part 23 of the cylindrical member 2, you may provide the notch 26 which connects the edge part of the side wall part 23, and the through-holes 25a and 25b. By providing such a cut 26, the ring-shaped elastic body 9 can be inserted into and removed from the through holes 25a, 25b via the cut 26, and when the ring-shaped elastic body 9 is cut, the elastic body 9 can be easily replaced.

DESCRIPTION OF SYMBOLS 1 ... Dustproof device for spectacles, 2 ... Cylindrical member, 21 ... Front peripheral part, 22 ... Back peripheral part, 23 ... Side wall part, 24 ... Cutting part, 3 ... Locking part, 4 ... Water retention member, 5 ... Glasses, 51 ... Lens, 52 ... Rim, 53 ... Nose pad, 6 ... Half rim type glasses, 7 ... Rimless glasses, 9 ... Elastic body

Claims (4)

A pair of left and right lenses and a pair of left and right rims that hold the pair of left and right lenses.
A pair of left and right cylindrical members respectively positioned behind the pair of left and right lenses in a state of being locked to the glasses;
It is attached to the upper and lower parts of each cylindrical member so as to protrude to the front position of the front peripheral edge of each cylindrical member, and each cylinder is attached to the outer peripheral part of each lens or the outer peripheral part of each rim. A locking portion for locking the shaped member,
Each said cylindrical member has flexibility, and the cutting | disconnection part cut | disconnected from the said front peripheral part to the back peripheral part is provided in the site | part on either the right or left side of the side wall part of each said cylindrical member. ,
Each of the locking portions is
A slider that can be locked to the outer periphery of the lens or the outer periphery of the rim;
A guide that is attached to the cylindrical member and guides the slider to be movable in the front-rear direction so that the amount of protrusion of the slider forward relative to the front peripheral edge of the cylindrical member can be adjusted;
A dustproof tool for spectacles, comprising: an inhibition portion that inhibits movement of the slider in the front-rear direction . 2. The spectacle dustproof device according to claim 1, wherein upper and lower side portions sandwiching the cut portion at either one of the left and right sides of the side wall portion are connected by an elastic body. A dustproof tool for eyeglasses that is detachably locked to a rimless eyeglass comprising a pair of left and right lenses,
A pair of left and right cylindrical members respectively positioned behind the pair of left and right lenses in a state of being locked to the rimless glasses;
Attached to the upper and lower portions of each cylindrical member so as to protrude to the front position of the front peripheral edge of each cylindrical member, and for locking each cylindrical member to the outer peripheral portion of each lens And a locking part,
Each said cylindrical member has flexibility, and the cutting | disconnection part cut | disconnected from the said front peripheral part to the back peripheral part is provided in the site | part on either the right or left side of the side wall part of each said cylindrical member. ,
Each of the locking portions is
A slider that can be locked to the outer periphery of the lens;
A guide that is attached to the cylindrical member and guides the slider to be movable in the front-rear direction so that the amount of protrusion of the slider forward relative to the front peripheral edge of the cylindrical member can be adjusted;
A dustproof tool for spectacles, comprising: an inhibition portion that inhibits movement of the slider in the front-rear direction . 4. The dustproof tool for spectacles according to claim 3 , wherein portions on both the upper and lower sides sandwiching the cutting portion on either the left or right side of the side wall portion are connected by an elastic body.

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