JP2020046459A - Spectacle frame, spectacle, and spectacle magnifying glass - Google Patents

Abstract

To provide a spectacle frame which can easily maintain the state in which a lateral frame is opened, a spectacle having the spectacle frame, and a spectacle magnifying glass.SOLUTION: A spectacle frame 1 includes: a front frame 10 holding a lens; a lateral frame 20 rotatably connected to both ends in the lateral direction of the front frame 10 by a hinge part 30. The hinge part 30 has a resistance unit in which the resistance force on the rotation in the position rotated from the state in which the lateral frame 20 is closed by a predetermined angle is set to be higher than the resistance force on the rotation when a rotation of an angle different from the predetermined angle is made.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an eyeglass frame, eyeglasses, and an eyeglass-type magnifier.

  BACKGROUND ART Eyeglasses and eyeglass-type magnifiers (hereinafter also referred to as eyeglasses or the like) include a front frame that holds a lens to be disposed in front of the left and right eyes of a user, and a horizontal frame that extends from both left and right ends of the front frame. The horizontal frame is rotatably connected to the front frame by, for example, a joint such as a hinge (for example, see Patent Document 1).

JP-T-2017-533470

  When the horizontal frame is rotatably connected to the front frame, the user can wear the spectacles and the like by opening the horizontal frame when the spectacles and the like are used. Further, when the spectacles or the like are not used, the spectacles or the like can be stored compactly by folding the horizontal frame.

  In some cases, the spectacles or the like are placed on a desk with the horizontal frame opened so that the spectacles or the like can be easily worn. However, since the horizontal frame is rotatably connected to the front frame, the horizontal frame may be closed against the intention of the user when putting glasses or the like on the desk.

  Therefore, one aspect of the disclosed technology is to provide an eyeglass frame that can easily maintain a horizontal frame in an open state.

  One aspect of the disclosed technology is exemplified by the following eyeglass frame. The present spectacle frame is a spectacle frame including a front frame for holding a lens and a horizontal frame rotatably connected to left and right ends of the front frame via hinge portions. The hinge portion is configured such that a resistance force against rotation at a position rotated by a predetermined angle from a state in which the horizontal frame is closed is higher than a resistance force against rotation when rotated by an angle different from the predetermined angle. Including a resistance part.

  In the frame for spectacles, at the hinge portion that rotatably connects the front frame and the horizontal frame, when the resistance force related to the rotation of the horizontal frame is rotated by a predetermined angle from the closed state, another angle rotation is performed. A resistance portion set higher than the set position is provided. Therefore, when the horizontal frame is opened more than a predetermined angle, the horizontal frame is prevented from rotating in the closing direction due to the resistance of the resistance portion. Therefore, according to the spectacle frame, the state in which the horizontal frame is open can be easily maintained.

The disclosed technology may include the following features. The resistance portion includes a pair of projections provided on each of the front frame and the horizontal frame in the hinge portion, and the pair of projections rotate the predetermined angle from the closed state of the horizontal frame to form the pair of projections. One of the projections is provided at a position over the other of the pair of projections. With such a feature, when the horizontal frame is opened at a predetermined angle, the protrusion provided on one of the front frame and the horizontal frame gets over the protrusion provided on the other of the front frame and the horizontal frame. Interference between the projections provided on the horizontal frame and the projections provided on the front frame suppresses the horizontal frame from rotating in the closing direction.

  The disclosed technology may include the following features. The protrusion further includes a minute protrusion having a height determined according to a machining accuracy at a tip thereof. By having such a feature, even if there is a difference due to machining accuracy in the gap between the front frame and each of the left and right horizontal frames in the hinge portion, the minute projection can fill the gap. Therefore, in each of the left and right horizontal frames, a difference in smoothness when rotating the horizontal frame is suppressed.

  The technology of the disclosure may be spectacles and spectacle-type magnifiers provided with the spectacle frame described above.

  According to the technology of the present disclosure, it is possible to easily maintain a state in which the horizontal frame of the glasses frame is open.

FIG. 1 is a diagram illustrating an example of an eyeglass-type magnifier according to the embodiment. FIG. 2 is an example of a partially enlarged view of a portion included in the area A of FIG. 1 in the previous frame. FIG. 3 is an example of a partially enlarged view of a portion included in the area A of FIG. 1 in the horizontal frame. FIG. 4 is a first diagram illustrating a state of the hinge portion when the horizontal frame is opened. FIG. 5 is a second diagram illustrating the state of the hinge when the horizontal frame is opened. FIG. 6 is a diagram illustrating an example of a state in which the horizontal frame is closed against the intention of the user. FIG. 7 is a first diagram illustrating an example of the angle of the horizontal frame that gives the user a click feeling. FIG. 8 is a second diagram exemplifying the angle of the horizontal frame that gives the user a click feeling. FIG. 9 is an example of a partially enlarged view of a portion included in the region A of FIG. 1 in the horizontal frame according to the first modification.

  Hereinafter, embodiments will be described with reference to the drawings. The configuration of the embodiment described below is an exemplification, and the disclosed technology is not limited to the configuration of the embodiment.

<Embodiment>
FIG. 1 is a diagram illustrating an example of an eyeglass-type magnifier according to the embodiment. The eyeglass-type magnifier 100 illustrated in FIG. 1 includes a frame 1, a magnifier 40, and a nose pad 50. The frame 1 includes a front frame 10 and horizontal frames 20, 20 rotatably connected to the front frame 10. FIG. 1 is an example of a top view of the spectacle-type magnifying glass 100, and illustrates a state in which the horizontal frames 20, 20 of the frame 1 are opened. In this specification, the head side of the user wearing the spectacle type magnifying glass 100 is up, the foot side is down, the right eye side is right, the left eye side is left, the magnifying glass 40 side is the front, the horizontal frame The 20 side is the back. In the frame 1, the vertical direction is also referred to as a height direction, and the direction orthogonal to the vertical direction and orthogonal to the side surface of the frame 1 is also referred to as a thickness direction. Among the side surfaces of the frame 1, the side surface on the user side is referred to as an inner surface, the side surface opposite to the inner surface is referred to as an outer surface, the upper side surface as an upper surface, and the lower side surface as a lower surface. The frame 1 is an example of an “eyeglass frame”.

  The magnifying mirror 40 is a lens that magnifies an image of an object. The frame 1 is a member that holds the magnifying glass 40 and allows the eyeglass-type magnifying glass 100 to be worn by a user. The frame 1 is formed of an elastic member having elasticity, for example, an elastic resin such as polyamide or polycarbonate. The frame 1 is more preferably formed of polyamide in consideration of strength and elasticity. The frame 1 includes a front frame 10 and horizontal frames 20 and 20.

  The front frame 10 is a member that holds the magnifying glass 40. The horizontal frames 20, 20 are members that hold the spectacle-type magnifying glass 100 by being put on the ears of the user. The horizontal frames 20, 20 are rotatably connected to the front frame 10 by hinge portions 30, 30 at left and right ends of the front frame 10. The front frame 10 is enlarged so that the magnifying glass 40 is positioned in front of the left and right eyes of the user when the spectacle-type magnifying glass 100 is mounted so that the user puts the horizontal frames 20, 20 on the left and right ears. Hold the mirror 40. By viewing the object through the magnifying glass 40, the user can enlarge and view the object.

  FIG. 2 is an example of a partially enlarged view of a portion belonging to a region A in FIG. 1 in a front frame of the glasses-type magnifying glass according to the embodiment. That is, FIG. 2 illustrates an enlarged view of a portion belonging to the front frame 10 in the hinge portion 30. In FIG. 2, the upper side is not shown in order to explain the internal structure of a portion belonging to the front frame 10 in the hinge portion 30.

  A receiving portion 11 for receiving the horizontal frame 20 is formed in a portion of the hinge portion 30 belonging to the front frame 10. The receiving portions 11 are concave portions formed at both ends of the front frame 10 in the thickness direction from the inner surface to the outer surface. Bearings 12 are provided on an upper surface and a lower surface of the receiving portion 11 for receiving a shaft serving as a rotation shaft of the horizontal frame 20. In addition, a flat portion 14, a convex portion 15, and a concave portion 16 are provided in this order on an opposing surface 13 of the receiving portion 11, which faces the horizontal frame 20 and is orthogonal to the upper surface and the lower surface, from the end side of the front frame 10. . The end of the flat part 14 is a protruding end 17.

  FIG. 3 is an example of a partially enlarged view of a portion belonging to a region A in FIG. 1 in a horizontal frame of the glasses-type magnifying glass according to the embodiment. That is, FIG. 3 illustrates an enlarged view of a portion belonging to the horizontal frame 20 in the hinge portion 30.

  A portion of the hinge portion 30 that belongs to the horizontal frame 20 is provided with a tapered portion 21 that is formed to be smaller in height and thickness than other portions of the horizontal frame 20. The tapered portion 21 is formed so as to be cut from the outer surface of the horizontal frame 20 toward the inner surface, and a step is formed on the outer surface between the tapered portion 21 and a portion other than the tapered portion 21 in the horizontal frame 20. The step forms a step wall 25 which is a plane perpendicular to the upper and lower surfaces of the horizontal frame 20. The tapered portion 21 is provided with a shaft hole 22 which is a vertical hole into which the rotation shaft of the horizontal frame 20 is inserted. The tip of the tapered portion 21 is provided with a curved surface portion 23 that is a curved surface perpendicular to the upper and lower surfaces of the horizontal frame 20. When the horizontal frame 20 is received by the receiving portion 11 of the front frame 10, a projection 24 protruding toward the facing surface 13 of the receiving portion 11 is provided on a part of the curved surface portion 23.

FIG. 4 and FIG. 5 are diagrams illustrating the state of the hinge portion when the horizontal frame is opened. 4 and 5 are examples of a partially enlarged view of a part belonging to the region A in FIG. 1 in the frame 1 of the glasses-type magnifying glass 100 according to the embodiment. 4 and 5, illustration of the upper side surface of the frame 1 is omitted to explain the internal structure of the hinge portion 30. When the horizontal frame 20 is opened (turned) to some extent from the closed state, the protrusion 24
Abuts on the protrusion 15 of the front frame 10.

  FIG. 4 is a diagram illustrating an example of a state in which the protrusion 24 of the horizontal frame 20 is in contact with the protrusion 15 of the front frame 10 when the horizontal frame 20 is opened from the closed state. The height of the protrusion 24 of the horizontal frame 20 and the height of the protrusion 15 of the front frame 10 are set to an appropriate level by the protrusion 24 and the protrusion 15 contacting the user who opens the horizontal frame 20 as illustrated in FIG. A feeling (hereinafter also referred to as a click feeling) is given, and the height of the projection 24 is adjusted to reach the concave portion 16 beyond the convex portion 15 by the elastic force of the frame 1. When the protrusion 24 gets over the convex portion 15 and is housed in the concave portion 16, the state illustrated in FIG. 5 is obtained.

  FIG. 5 is a diagram illustrating an example of a state in which the protrusion 24 of the opened horizontal frame 20 is housed in the recess 16 of the front frame 10. The height of the protrusion 24 of the horizontal frame 20 and the depth of the concave portion 16 of the front frame are, as illustrated in FIG. It is adjusted so that it can be accommodated. When the projection 24 is received in the recess 16, as illustrated in FIG. 5, the step wall 25 of the horizontal frame 20 abuts against the protruding end 17 of the front frame 10, and the horizontal frame 20 is prevented from further opening. Is done.

  When the step wall surface 25 of the horizontal frame 20 abuts on the protruding end 17 of the front frame 10, the horizontal frame 20 is opened to the extent that the spectacle-type magnifying glass 100 can be suitably used. When the projection 24 of the horizontal frame 20 is accommodated in the recess 16 of the front frame 10, the projection 24 and the projection 15 of the front frame 10 interfere with each other, so that a resistance is generated in the direction in which the horizontal frame 20 closes. Therefore, the horizontal frame 20 is prevented from rotating in the closing direction against the intention of the user. Therefore, it is possible to prevent the horizontal frame 20 from being closed as illustrated in FIG. The protrusion 24 and the protrusion 15 are an example of a “resistor”. The projection 24 and the projection 15 are an example of a “pair of projections”.

  By the way, the position at which the rotating horizontal frame 20 gives the user a click feeling when the protrusion 24 of the horizontal frame 20 and the projection 15 of the front frame 10 abut (the degree of opening of the horizontal frame 20) is appropriately determined. I just need. The position at which the click feeling is given to the user can be determined by the relative positional relationship between the projection 24 and the projection 15. 7 and 8, when the horizontal frame 20 is opened (rotated) by about 60 degrees from a closed state (illustrated by a dotted line B in FIGS. 7 and 8), the projection 24 and the projection 15 come into contact with each other. The relative position between the projection 24 and the projection 15 is determined at the position. Although 60 degrees is merely an example, by setting the position at which the click feeling is given to about 60 degrees, it is possible for the user to recognize by the click feeling that the horizontal frame 20 will open completely soon. Also, 60 degrees is an example of a “predetermined angle”.

<Effects of Embodiment>
In the embodiment, when the horizontal frame 20 is opened, the protrusion 24 of the horizontal frame 20 rides over the convex portion 15 of the front frame 10 and is housed in the concave portion 16 of the front frame 10. When the protrusion 24 is accommodated in the recess 16, the protrusion 24 and the protrusion 15 interfere with each other, thereby suppressing the horizontal frame 20 from rotating in the closing direction. For this reason, according to the embodiment, the horizontal frame 20 is suppressed from closing against the user's intention.

  In the embodiment, when the horizontal frame 20 is opened to a fully open position (for example, 60 degrees) soon, the protrusion 24 of the horizontal frame 20 and the protrusion 15 of the front frame 10 come into contact with each other, and the protrusion 24 The click is conveyed to the user when getting over. Therefore, according to the embodiment, it is possible to inform the user that the horizontal frame 20 will be completely opened soon by a click feeling.

<First Modification>
FIG. 9 is an example of a partially enlarged view of a portion included in the region A of FIG. 1 in the horizontal frame according to the first modification. In the first modified example, a minute projection 24a projecting from the projection 24 of the horizontal frame 20 is provided. The minute projection 24a is formed in a substantially pyramid shape exemplified by a triangular pyramid and a quadrangular pyramid, for example. When the horizontal frame 20 is opened (rotated) by about 60 degrees from a closed state (illustrated by a dotted line B in FIGS. 7 and 8), the tip 24a1 of the microprojection 24a (the vertex of the cone forming the microprojection 24a) and The relative position between the minute protrusion 24a and the protrusion 15 is determined at a position where the protrusion 15 contacts. The minute projections 24a may be formed of an elastic resin such as polyamide or polycarbonate, for example, similarly to the frame 1.

  The front frame 10 and the horizontal frame 20 of the frame 1 are manufactured by, for example, injection molding using a mold. When the frame 1 is mass-produced, a plurality of dies for the front frame 10, a plurality of dies for the right side frame 20, and a plurality of dies for the left side frame 20 are prepared. For this reason, the dimensions of the front frame 10 and the horizontal frame 20 may vary depending on the mold used for manufacturing. To color the frame 1, a pigment is added to the material of the frame 1 such as a resin. The difference in the components of the pigment to be added may cause a difference in the fluidity of the material of the frame 1 in the mold, resulting in a difference in the molding conditions of the frame 1 and the shrinkage after the molding. Due to the influence of the working accuracy and the like as exemplified above, there is a difference between the interval between the horizontal frame 20 and the front frame 10 in the left hinge portion 30 and the interval between the horizontal frame 20 and the front frame 10 in the right hinge portion 30. It is possible. By providing the minute projections 24a, the minute projections 24a are crushed according to the distance between the horizontal frame 20 and the front frame 10. For example, when the distance between the horizontal frame 20 and the front frame 10 in the hinge part 30 is small, the fine protrusions 24a are more crushed, and when the distance between the horizontal frame 20 and the front frame 10 in the hinge part 30 is wide, the fine protrusions 24a are small. 24a collapses less. By the action of the minute projections 24a, the distance between the horizontal frame 20 and the front frame 10 is adjusted. Therefore, by providing such minute projections 24a, it is possible to suppress a difference in smoothness when rotating the horizontal frame 20 in each of the left and right horizontal frames 20.

  Further, when the horizontal frame 20 is repeatedly opened and closed, the friction between the tip 24a1 of the minute projection 24a and the projection 15 forms the tip 24a1 of the minute projection 24a formed of a resin such as polyamide into a round shape. Therefore, the opening and closing of the horizontal frame 20 becomes smoother, and the click feeling when the minute projection 24a gets over the convex portion 15 becomes more preferable. The size of the minute projection 24a (the height at which the minute projection 24a protrudes from the projection 24) may be appropriately determined according to the machining accuracy. In the first modified example, the minute projections 24 a are provided on the projections 24 of the horizontal frame 20, but the minute projections 24 a may be provided on the protrusions 15 of the front frame 10. Further, the minute protrusion 24a may be provided on both the protrusion 24 and the protrusion 15.

  The recess 16 of the front frame 10 may be omitted. Even when the concave portion 16 is omitted, when the horizontal frame 20 is open, the protrusion 24 of the horizontal frame 20 and the convex portion 15 of the front frame 10 interfere with each other, so that the horizontal frame 20 can be easily maintained in the open state. However, the provision of the recess 16 allows the protrusion 24 to be accommodated in the recess 16 when the horizontal frame 20 is opened, so that the open state of the horizontal frame 20 is more stably maintained.

  In the embodiment, the spectacles-type magnifier 100 including the magnifier 40 has been described. However, instead of the magnifier 40, spectacles including a lens for spectacles for correcting myopia or hyperopia may be used. Further, instead of the magnifying glass 40, a polarizing lens, a lens for reducing blue light, or the like may be employed.

  The embodiments and modifications described above can be combined with each other.

DESCRIPTION OF SYMBOLS 100 ... Eyeglass type magnifier 1 ... Frame 10 ... Front frame 11 ... Receiving part 12 ... Bearing 13 ... Opposing surface 14 ... Flat part 15 ... Convex part 16. ..Recess 17: Protrusion 20: Horizontal frame 21: Tapered portion 22: Shaft hole 23: Curved surface 24: Projection 24a: Microprojection 24a1: Tip 25 ... Stepped wall surface 30 ... Hinge part 40 ... Magnifier 50 ... Nose pad

Claims (5)

An eyeglass frame comprising: a front frame holding a lens; and a horizontal frame rotatably connected to left and right ends of the front frame via hinge portions,
The hinge portion has a resistance against rotation at a position rotated by a predetermined angle from the closed state of the horizontal frame is set higher than a resistance against rotation when rotated by an angle different from the predetermined angle. Including a resistance part
Eyeglass frames. The resistance portion includes a pair of projections provided on each of the front frame and the horizontal frame in the hinge portion, and the pair of projections rotate the predetermined angle from the closed state of the horizontal frame to form the pair of projections. One of the projections is provided at a position over the other of the pair of projections,
An eyeglass frame according to claim 1. At least one of the pair of projections further includes a micro projection having a height determined according to the machining accuracy at the tip thereof.
An eyeglass frame according to claim 2. An eyeglass frame according to any one of claims 1 to 3,
And the lens held by the front frame,
glasses. An eyeglass frame according to any one of claims 1 to 3,
And the lens held by the front frame,
The lens is a magnifying glass;
Glasses type magnifier.

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