JP2006011208A - Fitting mechanism for auxiliary optical member for spectacles - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fitting mechanism capable of detachably attaching even an auxiliary optical member which is heavy like a magnifier for medical use to spectacles in a stable state. <P>SOLUTION: A clip 1 as the fitting mechanism is for detachably fitting a holder 18 holding magnifiers 36 and 37 to spectacles in front of the lenses of the spectacles 20, and has a fitting part 7 for fitting the holder 18, pairs of left and right clamp parts 2a and 2b, and 3a and 3b elastically clamping the pair of left and right spectacle lenses from front and rear directions respectively, and abutting rods 6a and 6b which have at their tips abutting parts abutting against the front sides of the spectacle lenses outside the clamp parts 2a and 2b, and 3a and 3b respectively. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention provides an attachment mechanism for detachably attaching auxiliary optical members such as various loupes having a magnifying lens system, a reading lens, a light-shielding lens, etc., having a magnifying lens system in a cylinder such as a medical loupe used by a surgeon during surgery. About.

Conventionally, this type of mounting mechanism includes a pair of left and right clamping members that are elastically biased in the approaching direction, holding a pair of left and right eyeglass lenses from the front and rear directions, and a horizontally extending regulating member as the upper edge of the eyeglass frame. There is known a clip that is attached to spectacles by abutting and positioning from above.
Japanese Patent Laid-Open No. 11-30768

  According to the above conventional example, the left and right eyeglass lenses are each pinched by a pinching member, so if the auxiliary optical member is light like a reading glasses lens or a light-shielding lens, there is a problem. However, in the case of a heavy object such as a medical loupe, there is a disadvantage that the mounting state is unstable.

  An object of the present invention is to provide an auxiliary optical member mounting mechanism for spectacles that eliminates the above-described disadvantages and can detachably attach an auxiliary optical member to spectacles in a stable state.

  That is, the auxiliary optical member mounting mechanism for spectacles according to the present invention includes a holding body that directly or indirectly holds the auxiliary optical member so that the auxiliary optical member is positioned on the front side of the spectacle lens. An attachment mechanism for detachably attaching, an attachment part for attaching the holding body, a pair of left and right holding parts for holding the pair of left and right eyeglass lenses from the front-rear direction, a front side of the eyeglasses, and And / or an abutting portion that abuts on the rear surface side.

  And it is suitable if a contact part is comprised so that it may contact | abut each front surface of a pair of right-and-left eyeglass lenses in the position outside each clamping part, respectively.

  According to the eyeglass auxiliary optical member mounting mechanism of the present invention, in addition to the pair of sandwiching portions for projecting and sandwiching the pair of left and right eyeglass lenses from the front-rear direction, the front side and / or the rear side with respect to the eyeglasses. Since the abutting portion to abut is provided, even a heavy auxiliary optical member can be attached to the glasses in a stable state.

  In addition, when the contact portions are provided on the front surfaces of the pair of left and right eyeglass lenses, the mounting state becomes more stable if the contact portions are configured to contact each other at a position outside the respective holding portions.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. Here, FIG. 1 is a perspective view of a state in which a holding body holding a loupe as an optical auxiliary member for glasses is attached to a clip as an attachment mechanism, and FIG. 2 is a cross-sectional view of the holding body holding a loupe attached to a clip at a central portion. FIG. 3 is a front view showing a state in which the loupe is attached to the glasses with a clip, and FIG. 4 is a longitudinal sectional view of a fixing mechanism for fixing the loupe to the support.

  As shown in FIGS. 1 to 3, the clip 1 as an attachment mechanism includes a pair of left and right clamping members 2 a, 3 a, 2 b, 3 b that are a pair of left and right clamping parts that are elastically biased by springs 4 in the approaching direction. In order to displace these clamping members 2a, 3a, 2b, and 3b in the direction of separation against the elastic urging force of the spring 4, there are an operation portion 5 that can be displaced in the direction of the attachment portion 7 and a bent portion at the tip. It consists of a pair of contact rods 6a and 6b that become contact portions. The attachment portion 7 is for attaching a holding body to be described later.

  As shown in FIG. 2, the attachment portion 7 is provided with an attachment hole 8 through which the support shaft 21 of the holding body 18 is inserted, and a restriction portion 9 extending rearward. The mounting portion 7, each one of the clamping members 2a and 2b, and the contact rods 6a and 6b are integrally formed of synthetic resin. Each of the other holding members 3a and 3b and the operation portion 5 are integrally formed of metal.

  Thus, as described above, the operation portion 5 is operated to displace the pair of left and right clamping members 2a, 3a, 2b, 3b in the direction of separation against the elastic urging force of the spring 4, and then the spring 4 The pair of left and right holding members 2a, 3a, 2b, and 3b can be displaced in the contact direction by the elastic urging force, so that the lens portion in the vicinity of the bridge of the spectacles 20 can be held in the front-rear direction. At this time, normally, the lower surface of the restricting portion 9 comes into contact with the upper edge of the glasses 20 for positioning. In this state, as shown in FIG. 3, the abutment portions at the tips of the abutment rods 6a and 6b abut on the lens front surface side of the spectacles 20 and thereby abut against the lens at each of the left and right locations. 36 and 37 can be attached to the glasses 20 in a stable state.

  The clip 1 can be attached with its position adjusted in the vertical direction within a range in which each contact portion contacts the spectacle lens. For this reason, in the normal attachment position where the vertical width is narrow and the restricting portion 9 is in contact with the upper edge of the glasses, the tip clamping portions of the clamping members 2a, 3a, 2b, 3b are positioned below the lower edge of the glasses. Even with the glasses, the position of the clip 1 can be adjusted upward, and the lens can be brought into contact with the lens at two left and right positions, so that the loupes 36 and 37 can be securely attached.

  Next, the holder 18 and the support 31 for attaching the loupes 36 and 37 to the holder 18 will be described. As shown in FIGS. 1 to 3, the loupe mounting support 31 is formed by integrally connecting a pair of left and right support frames 32 and 33 with a connecting plate 34 (see FIG. 2). The pair of support frames 32 and 33 are horizontally arranged so that an eyepiece tube 38 (see FIG. 4) of loupes 36 and 37 (to be described later) can move horizontally along the inside of the support frames 32 and 33. A guide edge 32a that guides a spacer 13, which will be described later, is formed on the upper and lower edges on the front side (the surface that does not face the user when the user wears the surface shown in FIG. 3). , 32b, 33a, 33b. Further, a fixing screw hole 35 is provided at the center of the connecting plate 34 (see FIG. 2).

  It should be noted that the pair of support frames 32 and 33 are at least in front so that the optical axes of both the loupes 36 and 37 intersect at their focal points in a state where the loupes 36 and 37 are fixed by a fixing mechanism 41 described later. It is preferable that the side is formed in a curved surface that follows a curved surface including an arc centered on the focal point and having a focal length as a radius.

  Subsequently, the loupes 36 and 37 and the fixing mechanism 41 will be described. Since the loupes 36 and 37 have the same configuration on the left and right, only the loupe 36 and its mounting mechanism 41 will be described below. As shown in FIG. 4, the loupe 36 includes an eyepiece lens barrel 38 and an objective lens barrel 39, and includes a magnifying lens system having a predetermined focal length. The eyepiece lens barrel 38 and the objective lens barrel. A step portion 40 is formed at a boundary portion with 39.

  As shown in FIG. 4, the fixing mechanism 41 includes an outer spacer 13, an inner spacer 14, and a fixing ring 17. The outer spacer 13 is located on the objective lens tube 39 side of the eyepiece lens tube 38, is guided by the guide edges 32a and 32b, and can move in the horizontal direction. One surface is in contact with the step portion 40, and the other surface is supported. A fitting hole for contacting the eyepiece tube 38 of the loupe 36 is provided in a plate-like flexible material that abuts the front side of the frame 32 and shields the through-hole portion of the support frame 32.

  The inner spacer 14 is located on the end side of the eyepiece lens barrel 38, one surface abuts on the back surface of the support frame 32, and the other surface abuts on the fixing ring 17. A fitting hole for fitting the eyepiece tube 38 of the loupe 36 is provided in the plate-like flexible material to be shielded. The fixing ring 17 is provided with a female helix 16 threadedly engaged with a male helix 15 provided on an outer periphery of an end portion of the eyepiece lens barrel 38 on the inner circumference, and is rotated and tightened in a direction to deepen the screwing, thereby the outer spacer 13. One surface is fixed to the front surface of the support frame 32 and one surface of the inner spacer 14 is fixed to the back surface of the support frame 32 so as to be pressed. Further, the fixing ring 17 of the fixing mechanism 41 is rotated in the unscrewing direction to release the fixing state via the spacers 13 and 14, and the eyepiece cylinders 38 are horizontally moved in the support frames 32 and 33. By moving the loupes 36 and 37, the positions of the loupes 36 and 37 can be adjusted so as to match the eye width of the user.

  Next, the holding body 18 will be described. As shown in FIGS. 1 to 3, the holding body 18 includes a support portion 22 attached to the clip 1, and a loupe attachment support body 31 connected to the support portion 22 via a pair of left and right connecting arms 23 and 24. And a holding unit 25 for holding the. The support portion 22 and the holding portion 25 are rotatably supported by the connection arms 23 and 24 by support shafts 26 and 27, respectively. Therefore, the support portion 22 and the holding portion 25 can be rotated in the vertical direction about the support shafts 26 and 27, respectively. With the rotation, the support body 31 and the loupes 36 and 37 are connected to the glasses 20. Can be displaced in the direction of contact and separation.

  As shown in FIG. 2, the holding portion 25 has a through hole 30 in the lower center of the back side. In addition, in the portion of the holding portion 25 where the through hole 30 is provided, a recessed groove 28 is provided so as to form a gap, and although not clearly shown in the figure, the opposing interval of the recessed groove 28 is narrow at both ends. The connecting plate 34 of the loupe mounting support 31 is inserted into the recessed groove 28 so that the screw hole 35 thereof corresponds to the through-hole 30, The loupe mounting support 31 is fixed to the holding body 25 at its connecting plate 34 by inserting a screw 29 from the through hole 30 and tightening it through the screw hole 35.

  Further, the support portion 22 of the holding body 25 is integrally provided with a pair of projecting plates 22a and 22b on both sides of the upper end. The support shaft 21 is fixed to the projecting plates 22a and 22b, and the clip 1 is attached to the support shaft 21.

  As shown in FIG. 4, each support frame 32 (support frame 33 is not shown) has an optical axis L of each loupe 36 (loupe 37 is not shown) to be fixed, which is an optical axis of an eyeglass lens (not shown). If the angle is adjusted so as to face 20 degrees below N, it is suitable for the user to see the hand at which he works. This angle adjustment is performed by rotating the support portion 22 and the holding portion 25.

  The present invention is not limited to the embodiment described above. For example, the contact portion of the clip 1 may be in contact with the bridge portion on the rear surface side of the glasses 20, or on the front side of the glasses 20. In addition to what abuts, what abuts on the rear side of the glasses may be provided. Further, the outer spacer 13 may be movably fitted to the eyepiece lens barrel 38 and may be configured integrally with the eyepiece lens barrel 38 so that only the inner spacer 14 is separable from the eyepiece lens barrel 38. it can. Furthermore, the downward angle of the optical axis L with respect to the optical axis N is not limited to 20 degrees, and any angle within the range of approximately 15 degrees to 30 degrees is suitable.

  Further, the fixed loupes 36 and 37 can be visually recognized by adjusting the focus by the function of the eyes of the user even if the optical axis L and the focal length of the magnifying lens system do not completely coincide with the viewing target portion. The support frames 32 and 33 may be formed in a planar shape. Furthermore, instead of the spacers 13 and 14 made of a flexible material, they are made of a hard material such as metal and have outer spacers having surfaces that are in front of the support frames 32 and 33, and rear surfaces of the support frames 32 and 33. An inner spacer having a surface can also be used.

The perspective view of the state which attached the holding body holding the loupe to the clip. The longitudinal cross-sectional view which fractured | ruptured the holding body holding the loupe attached to the clip in the center part. The front view which shows the state which attached the loupe to the spectacles with the clip. The longitudinal cross-sectional view of the fixing mechanism which fixes a loupe to a support body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Clip 2a, 2b, 3a, 3b Holding member 4 Spring 5 Operation part 6a, 6b Contact rod 7 Attachment part 18 Holding body 20 Glasses 22 Support part 25 Holding part 31 Support body 36, 37 Loupe 41 Fixing mechanism

Claims (2)

An attachment mechanism for detachably attaching a holding body for holding an auxiliary optical member to spectacles so that the auxiliary optical member is positioned on the front side of the spectacle lens, and an attachment portion for attaching the holding body and a pair of right and left A pair of left and right sandwiching parts for resiliently clamping the eyeglass lenses from the front and rear directions, and an abutment part that abuts against the glasses on the front surface side and / or the rear surface side thereof. Mounting mechanism. 2. The auxiliary optical member mounting mechanism for spectacles according to claim 1, wherein the contact portions are configured to contact the front surfaces of the pair of left and right eyeglass lenses at positions outside the respective holding portions.

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