Assembly of primary and auxiliary eyeglasses which are interconnected by a retainer clip

An eyeglass assembly includes a pair of first eyeglasses having two first lenses and a first bridge that interconnects the first lenses, and a pair of second eyeglasses having two second lenses and a second bridge that interconnects the second lenses. A retaining clip is disposed fixedly on the second bridge, and is formed with a restricting groove unit, within which a portion of the first bridge is received fittingly, so as to clamp the portion of the first bridge within the clip, thereby fixing the second eyeglasses relative to the first eyeglasses.

BACKGROUND OF THE INVENTION
 1. Field of the Invention
 This invention relates to eyeglasses, more particularly to an assembly of
 primary and auxiliary eyeglasses.
 2. Description of the Related Art
 An eyeglass assembly includes a pair of primary eyeglasses and a pair of
 auxiliary eyeglasses, which is mounted normally on the primary eyeglasses
 by the engagement between a bolt and a threaded hole, between an insert
 pin and a pin-receiving hole, or between mutually attracted magnetic
 members. In a case where either of the bolt or the insert pin is provided
 for interconnecting the primary and auxiliary eyeglasses, it is difficult
 to mount the auxiliary eyeglasses on the primary eyeglasses. In a case
 where the magnetic members are provided on the primary and auxiliary
 eyeglasses, a complicated structure is incurred.
 SUMMARY OF THE INVENTION
 The object of this invention is to provide a relatively simple assembly of
 primary and auxiliary eyeglasses, in which the auxiliary eyeglasses can be
 mounted easily on the primary eyeglasses.
 Accordingly, an eyeglass assembly of this invention includes a pair of
 first eyeglasses having two first lenses and a first bridge that
 interconnects the first lenses, and a pair of second eyeglasses having two
 second lenses and a second bridge that interconnects the second lenses. A
 retaining clip is disposed fixedly on the second bridge, and is formed
 with a restricting groove unit, within which a portion of the first bridge
 is received fittingly, so as to clamp the portion of the first bridge
 within the clip, thereby fixing the second eyeglasses relative to the
 first eyeglasses.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
 Referring to FIGS. 1 and 2, a first preferred embodiment of an eyeglass
 assembly of this invention is shown to include a pair of first glasses 1,
 a pair of second glasses 2, a pair of temples 3, and a retaining clip 4.
 The pair of the first glasses 1 has two first frames 11, two first lenses
 12 secured within the first frames 11, respectively, and a first bridge 13
 that interconnects the first frames 11. The pair of the second glasses 2
 has two second frames 21, two second lenses 22 secured within the second
 frames 21, and a second bridge 23 that interconnects the second frames 21.
 The temples 3 are mounted respectively on two sides of the first glasses
 1. As such, the pair of the first glasses 1 serves as a pair of primary
 eyeglasses. The second eyeglasses 2 are auxiliary eyeglasses, which are
 mounted in front of the first eyeglasses 1 by means of the clip 4. The
 clip 4 is disposed fixedly on the second bridge 23. In this embodiment,
 the clip 4 is mounted removably on the second bridge 23.
 The first bridge 13 consists of a uniform-width bridging portion, which
 interconnects the first frames 11. The second bridge 23 consists of a
 uniform-width bridging portion, which interconnects the second frames 21.
 The clip 4 is unitary, and has a vertical connecting plate 41, a
 horizontal upper clamping plate 42, and a horizontal lower clamping plate
 43. The upper and lower clamping plates 42, 43 extend respectively,
 horizontally and rearwardly from upper and lower ends of a rear side
 surface of the connecting plate 41. Each of the upper and lower clamping
 plates 42, 43 has an inner surface, which is formed with a positioning rib
 420, 430 on a middle portion thereof. A space 44 is formed in the clip 4,
 and is divided into a narrowed middle space 45 that is located between the
 ribs 420, 430, a confining space 46 that is located between the connecting
 plate 41 and the ribs 420, 430 and between the upper and lower clamping
 plates 42, 43, and a restricting groove unit 47. Each of the upper and
 lower clamping plates 42, 43 further has a restricting rib 48, 49 that
 extends from a rear side of an inner surface thereof, thereby defining a
 narrowed end 40 of the restricting groove unit 47 between the restricting
 ribs 48, 49. The restricting groove unit 47 is located between the
 positioning ribs 420, 430 and the restricting ribs 48, 49 and between the
 upper and lower clamping plates 42, 43. The confining space 46 and the
 unit 47 are located on two sides of the positioning ribs 420, 430. The
 bridging portion of the first bridge 13 is received fittingly within an
 accommodating portion 470 of the restricting groove unit 47, which is
 wider than the narrowed end 40 and which has a width that is approximate
 to that of the bridging portion of the first bridge 13. The bridging
 portion of the second bridge 23 is received fittingly within the confining
 space 46. As such, the first and second bridges 13, 23 are clamped firmly
 within the clip 4, thereby fixing the second eyeglasses 2 relative to the
 first eyeglasses 1.
 Referring to FIG. 3, a second preferred embodiment of an eyeglass assembly
 of this invention is shown to include a pair of first frameless eyeglasses
 19, a pair of second frameless eyeglasses 29, and a retaining clip 4'. The
 second frameless eyeglasses 29 are mounted on the first frameless
 eyeglasses 19 by means of the clip 4' in the same manner as the first
 embodiment.
 Referring to FIG. 4, a third preferred embodiment of an eyeglass assembly
 of this invention is shown to include a pair of first eyeglasses 10 having
 two lenses 101 and two frames 102, a unitary pair of second eyeglasses 20,
 and a retaining clip 4". The second eyeglasses 20 are also mounted on the
 first eyeglasses 10 by means of the retaining clip 4" in the same manner
 as the first embodiment.
 Referring to FIGS. 5, 6 and 7, a fourth preferred embodiment of an eyeglass
 assembly 5 of this invention is shown to include a pair of second
 eyeglasses 50, which has a second bridge 51 and which is mounted on a pair
 of first eyeglasses 50' by means of a retaining clip 50". The clip 50" has
 a vertical connecting plate 52, a horizontal upper clamping plate 53 and a
 horizontal lower clamping plate 54. A first bridge 55 of the first
 eyeglasses 50' is received fittingly within a restricting groove unit 56
 in the clip 50". Each of the upper and lower clamping plates 53, 54 has an
 inner surface that is formed with a horizontally extending rib 57, thereby
 defining a narrowed end 500 of the restricting groove unit 56 between the
 ribs 57. The first bridge 55 has top and bottom surfaces, each of which is
 formed with a slot 58 that engages a corresponding one of the ribs 57 of
 the clip 50"0, thereby positioning the first bridge 55 within the clip
 50". The assembly of the first bridge 55, second bridge 51 and clip 55"
 can be modified into any one of four connecting devices 6, 7, 8, 9 (see
 FIGS. 8, 9, 10 and 11).
 Referring to FIG. 8, the connecting device 6 is shown to include a second
 bridge 60 and a retaining clip 60'. The clip 60' is generally U-shaped,
 and has a vertical connecting plate 61 that is formed with a clamping
 plate 62 that extends integrally and rearwardly from an upper end of the
 connecting plate 61, and a lower clamping plate 63 that extends integrally
 and rearwardly from a lower end of the formed within the clip 60' for
 receiving a first bridge 65 fittingly therewithin. The upper clamping
 plate 62 has an integral rib 66 that engages a slot 67 in a top surface of
 the first bridge 65, thereby positioning the first bridge 65 within the
 clip 60'. The rib 66 and the lower clamping plate 63 define cooperatively
 a narrowed end 600 of the restricting groove unit 64 therebetween.
 Referring to FIG. 9, the connecting device 7 is shown to include a
 retaining clip 70 and a second bridge 71. The retaining clip 70 is
 generally inverted U-shaped, and has a horizontal connecting plate 72, a
 vertical front clamping plate 73 and a vertical rear clamping plate 74.
 The front clamping plate 73 is formed integrally on the second bridge 71.
 The connecting plate 72 has two opposite sides that are formed
 respectively and integrally with the upper ends of the front and rear
 clamping plates 73, 74. As such, a restricting groove unit 75 is formed
 between the front and rear clamping plates 73, 74 and immediately under
 the connecting plate 72 for receiving a first bridge 76 fittingly
 therewithin. The front and rear clamping plates 73, 74 have opposed
 integral ribs 77, which extend inwardly therefrom to define a narrowed end
 700 of the restricting groove unit 75 therebetween for preventing removal
 of the first bridge 76 from the restricting groove unit 75.
 Referring to FIG. 10, the connecting device 8 is shown to include a
 retaining clip 80 and a second bridge 81. The clip 80 is generally
 L-shaped, and has a horizontal clamping plate 82 and a vertical connecting
 plate 83 that is formed integrally on the second bridge 81 and with a
 front end of the clamping plate 82. The clamping plate 82 has a bottom
 surface, which is formed with an integral rib 84 that has a generally
 oval-shaped cross-section so as to define a retaining groove 87 between
 the clamping plate 82 and the rib 84, thereby defining a restricting
 groove unit 85 between the connecting plate 83 and the rib 84 and
 immediately under the clamping plate 82. A first bridge 86 has a front
 side surface that abuts against the connecting plate 83, a top surface
 that abuts against the bottom surface of the clamping plate 82, and a rear
 side surface with a sharp edge 88 that extends rearwardly and integrally
 from an upper end thereof into the retaining groove 87 between the
 clamping plate 82 and the rib 84.
 Referring to FIG. 11, the connecting device 9 is shown to include a
 retaining clip 920, a second bridge 921 and a first bridge 923. The clip
 920 is formed integrally on the second bridge 921, and has a horizontal
 upper clamping plate 924 and a horizontal lower clamping plate 925, which
 clamp the first bridge 922 therebetween. The first bridge 922 has a top
 surface, which is formed with a positioning recess 923 that engages the
 upper clamping plate 924 of the clip 920 for positioning the clip 920 on
 the first bridge 922.
 Referring to FIG. 12, another preferred embodiment of an eyeglass assembly
 9' of this invention is shown to include a pair of first eyeglasses with a
 first bridge 911, a pair of second eyeglasses with a second bridge 912,
 and a retaining clip 913. Each of the first and second bridges 911, 912 is
 formed with a positioning recess 914, 915. The clip 913 has a horizontal
 upper clamping plate 916 and a horizontal lower clamping plate 917. The
 upper clamping plate 916 engages the positioning recesses 914, 915 in the
 first and second bridges 911, 912 for positioning the clip 913 on the
 first and second bridges 911, 912.
 FIG. 13 illustrates a connecting device for primary and auxiliary
 eyeglasses, which includes a second bridge 94 with a top surface that is
 formed with a restricting groove unit 95 so as to constitute a retaining
 clip in the second bridge 94. The second bridge 94 is provided on the
 primary eyeglasses. In this embodiment, a first bridge 96 is disposed on
 the auxiliary eyeglasses in front of the second bridge 94, and is formed
 integrally with a horizontal plate 97, which has a bottom surface with an
 insert block 98 that is received fittingly within the restricting groove
 unit 95. The insert block 98 has two opposed and open-ended horizontal
 slots 981 on two opposite side surfaces thereof. The second bridge 94 has
 two opposed horizontal ribs 951 that engage respectively the slots 981 in
 the insert block 98 and that define a narrowed end of the restricting
 groove unit 95 therebetween for preventing removal of the horizontal plate
 97 from the restricting groove unit 95 in the second bridge 94.
 With this invention thus explained, it is apparent that numerous
 modifications and variations can be made without departing from the scope
 and spirit of this invention. It is therefore intended that this invention
 be limited only as indicated by the appended claims.