Spectacle set with detachable shelter frame

A spectacle set includes a primary spectacle frame and a detachable shelter frame constructed for mounting behind the primary spectacle frame. The primary spectacle frame includes a frame body for mounting a pair of lenses in position, wherein the frame body includes a primary bridge connected between the two lenses, and two side extensions provided at two outer sides of the lenses respectively for coupling with a pair of temples respectively. The detachable shelter frame includes a shelter frame for supporting two auxiliary lenses and an attaching arrangement provided on a front side of the shelter frame to detachably mount the shelter frame behind the frame body, so as to securely mount the detachable shelter frame behind the primary spectacle.

BACKGROUND OF THE PRESENT INVENTION

1. Field of Invention

The present invention relates to a spectacle set, and more particularly to a spectacle set with a detachable shelter frame which is arranged to detachably mount behind a primary frame so as to prevent any accidentally dropping off of the shelter frame from the primary frame and to enhance the aesthetic appearance of the primary frame.

2. Description of Related Arts

Auxiliary shelter frame is commonly used nowadays. Especially, an auxiliary shelter frame with magnetic attachment is even more commonly used in recent market. A conventional spectacle set comprises a primary eyeglasses and an auxiliary frame detachably mounted in front of the primary eyeglasses in such a manner that the wearer is able to wear the primary eyeglasses as general and put the auxiliary frame on the primary eyeglasses as a sunglasses. However, the conventional spectacle set has several drawbacks.

Since the auxiliary frame is arranged to mount in front of the primary eyeglasses, the auxiliary frame may not be precisely aligned and engaged with the primary eyeglasses in a correct position. Therefore, the auxiliary frame may fall off from the primary eyeglasses easily especially during sporting or doing exercise. In other words, the configuration of the spectacle set fails to securely mount the auxiliary frame on the primary eyeglasses.

Moreover, when the auxiliary frame is mounted in front of the primary eyeglasses, the center of mass of the spectacle set will be substantially moved forward from the primary eyeglasses. Therefore, when the wearer wears the spectacle set, the primary eyeglasses and the auxiliary frame may cause uncomfortability to the wearer because the center of mass of the spectacle set may locate in front of the wearer's face.

Due to the construction of the primary bridge of the primary eyeglasses, if the gap formed between the auxiliary frame and the primary eyeglasses is too big, a double vision may be created when the light is refracted from the lenses of the auxiliary frame to the lenses of the primary eyeglasses through the gap. Therefore, most of the manufacturers try to minimize the distance between the primary eyeglasses and the auxiliary frame so as to reduce the phenomenon of double vision.

In addition, the primary eyeglasses must be employed with an attachment device to hold the auxiliary frame in front of the primary eyeglasses. The attachment device generally comprises a pair of magnetic members affixed at the front surfaces of two sides of the primary eyeglasses and a pair of corresponding magnets provided at the rear surfaces of two sides of the auxiliary frame for magnetically attaching with the magnetic members respectively so as to mount the auxiliary frame in front of the primary eyeglasses.

When the auxiliary frame is detached from the primary eyeglasses, the magnet members on the primary eyeglasses adversely affect the ornamental appearance of the primary eyeglasses. If a pair of smaller magnet members is used to keep the ornamental appearance of the primary eyeglasses, not only the wearer will suffer in the difficulty of aligning the auxiliary frame with the primary eyeglasses, but also the auxiliary frame will easily drop off due to even a slightly head shake. Furthermore, since the size of the primary eyeglasses is getting smaller and smaller, smaller size of magnet members must be used for incorporating with the primary eyeglasses, which may further weaken the magnetic attachment between the primary eyeglasses and the auxiliary frame.

Generally, the size of the auxiliary frame must be larger than the size of the primary eyeglasses such that when the auxiliary frame is mounted in front of the primary eyeglasses, the auxiliary frame can entirely cover the primary eyeglasses. However, the ornamental appearance of the primary eyeglasses will be blocked by the auxiliary frame.

In order to further secure the attachment of the auxiliary frame with the primary eyeglasses, a bridge clip is generally provided on the auxiliary frame to ride on the primary bridge of the primary eyeglasses. However, the bridge clip not only substantially increases the overall weight of the auxiliary frame but also complicates the mounting procedures of the auxiliary frame on the primary eyeglasses.

SUMMARY OF THE PRESENT INVENTION

A main object of the present invention is to provide a spectacle set which comprises a primary spectacle frame and a detachable shelter frame arranged to mount behind the primary spectacle frame so as to prevent the detachable shelter frame from dropping off from the primary frame and to enhance the aesthetic appearance of the primary spectacle frame.

Another object of the present invention is to provide a spectacle set, wherein the detachable shelter frame can be precisely and easily attached behind the primary spectacle frame by means of an attaching arrangement provided on the detachable shelter frame.

Another object of the present invention is to provide a spectacle set, wherein the detachable shelter frame is held behind the primary spectacle frame and supported by the wearer's nose, so as to prevent the detachable shelter frame from dropping down with respect to the primary spectacle frame. In addition, the ornamental appearance of the primary spectacle frame won't be blocked by the detachable shelter frame.

Another object of the present invention is to provide a spectacle set, wherein the attaching arrangement can be constructed as any kinds of existing attaching device such as magnetic engagement, clipping engagement or resilient engagement.

Another object of the present invention is to provide a spectacle set, wherein since the detachable shelter frame is mounted behind the primary spectacle frame, the distance between detachable shelter frame and the primary spectacle frame is minimized to better prevent the phenomenon of the double vision.

Another object of the present invention is to provide a spectacle set, wherein the rear-attaching configuration of the spectacle set c an prevent up and down or sideward movement of the detachable shelter frame with respect to the primary spectacle frame.

Another object of the present invention is to provide a spectacle set, which provides a simple but secure attachment between the primary spectacle frame and the detachable shelter frame so as to minimize the manufacturing cost of the detachable shelter frame.

Another object of the present invention is to provide a spectacle set, wherein the wearer may merely use one hand to attach or detach the detachable shelter frame during exercising or driving.

Accordingly, in order to accomplish the above objects, the present invention provides a spectacle set comprising a primary spectacle frame and a detachable shelter frame. The primary spectacle frame comprises a frame body which comprises a primary bridge connected between two lenses, and two side extensions provided at two outer sides of the lenses respectively for coupling with two temples respectively.

The detachable shelter frame comprises a shelter frame supporting two auxiliary lenses and an attaching arrangement provided on the shelter frame to detachably mount the shelter frame of the detachably shelter frame behind the frame body of the primary spectacle frame securely.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring toFIG. 1of the drawings, a spectacle set according to a first preferred embodiment of the present invention is illustrated, wherein the spectacle set comprises a primary spectacle frame10and a detachable shelter frame20.

The primary spectacle frame10, such as a conventional spectacle frame, comprises a frame body11for mounting a pair of lenses121,122in position. The frame body11comprises a primary bridge111connected between the two lenses121,122, and two side extensions131,132provided at two outer sides of the lenses121,122respectively for coupling with two temples141,142respectively.

The frame body11of the primary spectacle frame10can be constructed as the conventional spectacle frame to have a pair of lens rims, as shown inFIG. 1or the rimless frame, as shown inFIG. 5A, that the primary bridge111and the two side extensions131,132are directly fastened to the edges of the two lenses121,122. In other words, the primary spectacle frame10does not require modifying its original structure for mounting the detachable shelter frame20thereon.

The detachable shelter frame20comprises a shelter frame21for supporting two auxiliary lenses201,202and an attaching arrangement22provided on a front side surface of the shelter frame20to detachably attach the shelter frame20to the frame body11, so as to securely mount the detachable shelter frame20behind the primary spectacle frame10.

As shown inFIG. 1, the primary spectacle frame10further comprises two magnetic holders15, each of which has a magnetic attraction ability, provided at rear surfaces of two outer sides of the lenses121,122of the frame body11respectively, wherein each of the magnetic holders15is made of a kind of metal having magnetic attraction ability such as mild steel, low carbon steel and high grade steel, which is attractive to magnetic material such as permanent magnet. According to the first preferred embodiment, the two magnetic holders15are respectively provided at two rim lockers of the frame body11, which are connected to two outer sides of the lenses121,122of the primary spectacle frame10, as shown in FIG.1. Alternatively, two magnets can be mounted to the rear surfaces of the two side extensions131,132to function as the two magnetic holders15respectively.

The attaching arrangement22comprises two supporting arms221extended from two outer sides of the auxiliary lenses201,202respectively with respect to the magnetic holders15of the primary spectacle frame10and two magnetic seats222which are connected to the supporting arms221respectively and arranged to magnetically attach to the magnetic holders15respectively so as to hold the shelter frame21of the detachable shelter frame20behind the frame body21of the primary spectacle frame10in position, as shown in FIG.2.

Each of the magnetic seats222comprises a magnetic housing2221frontwardly extended from the respective supporting arm221, wherein each magnetic seat222is made of non-magnetic material or soft-magnetic metal having magnetic attraction ability such as mild steel, low carbon steel and high grade steel and a magnet2222mounted in the magnetic housing2221, which is arranged to face toward and align with the respective magnetic holder15of the frame body11when the detachable shelter frame20is mounted behind the primary spectacle frame10.

As shown inFIG. 3, the two magnetic holders15function as two engaging members protruded from the frame body11. Each of the magnets2222has a thickness smaller than a depth of the respective magnetic housing2221so as to define an engaging groove2223when the magnet2222is embedded in the magnetic housing2221for fittedly engaging with the respective magnetic holder15. In other words, the magnetic holders15are received in the two engaging grooves2223respectively, so as to further guide the attaching arrangement22of the detachable shelter frame20to magnetically attach to the magnetic holders15of the primary spectacle frame10.

Alternatively, the engaging grooves2223can be formed on the magnetic holders15respectively, wherein each of the magnets2222has a thickness larger than a depth of the respective magnetic housing2221so as to form an engaging member for fittedly engaging with the respective engaging groove2223of the magnetic holder15.

According to the preferred embodiment, the detachable shelter frame20may further comprises a clip bridge23extended between the two auxiliary lenses201,202for securely engaging with the primary bridge111of the primary spectacle frame10so as to further secure the attachment of the detachable shelter frame20behind the primary spectacle frame10.

The clip bridge23of the detachable shelter frame20is in U-shaped and comprises two rearwardly extending side wires231adapted for supporting on two ends of the primary bridge111of the frame body11and a downwardly curved clipping wire232extending in front of the primary bridge111, so that the clip bridge23is securely clipped on the primary bridge111when the detachable shelter frame20is mounted behind the primary spectacle frame10, as shown inFIGS. 1 and 2.

It is worth to mention that the attaching arrangement20can be embodied as the clip bridge23to mount the detachable shelter frame20behind the primary spectacle frame10. It is because the detachable shelter frame20is held by the primary spectacle frame10though the clip bridge23and supported by the wearer's nose, that prevents the detachable shelter frame20from dropping off the primary spectacle frame10. Even though there is no magnetic attachment involved in the spectacle set, merely by incorporating the clip bridge23with the detachable shelter frame20can substantially mount the detachable shelter frame20behind the primary spectacle frame10, so that the manufacturing cost of the spectacle set of the present invention can be minimized according to the present invention.

In order to mount the shelter frame21behind the primary spectacle frame10, the wearer may simply use one hand to put the shelter frame21behind the frame body11and drop it down. Due to the magnetic attraction, the two magnetic seats222of the shelter frame21are magnetically attracted to the magnetic holders15of the frame body11respectively, so as to guide the shelter frame21to automatically align with the primary spectacle frame10. So, the present invention provides not only the magnetic attraction but also the interlocking engaging for securely mounting the shelter frame21of the detachable shelter frame20behind the frame body11of the primary spectacle frame10. It there is the clip bridge23, it will securely clip on the primary bridge111of the primary spectacle frame10, so as to securely interlock the shelter frame21with the frame body11.

The wearer can also detach the shelter frame21from the frame body11of the primary spectacle frame10easily by slightly pulling the shelter frame away from the primary spectacle frame10until the two magnetic seats222move apart from the two magnetic holders15respectively, so as to release the magnetic engagement between the shelter frame21and the frame body11. Then, at the same time, the wearer may detach the shelter frame21by simply lifting it up from the primary spectacle frame10with one hand. In other words, the wearer may simply use one hand to operate the detachable shelter frame20to attach to or detach from the primary spectacle frame10. Especially, when the wearer is exercising or driving, it is dangerous for him or her to use both hands to wear the detachable shelter frame20.

Since the detachable shelter frame20is held behind the primary spectacle frame and supported by either the wearer's nose or the nose supports16of the primary spectacle frame10, the detachable shelter frame20will not accidentally drop off from the primary spectacle frame10. Practically, no strong magnetic attraction is required to use to mount the detachable shelter frame20behind the primary spectacle frame10, so that the size of the magnet2222can be minimized to reduce the overall weight of the detachable shelter frame20.

Thus, since the detachable shelter frame20is mounted behind the primary spectacle frame10, the auxiliary lenses201,202of the detachable shelter frame20can be positioned as close to the lenses121,122of the primary spectacle frame10as possible, so as to minimize a distance therebetween. When the detachable shelter frame is mounted behind the primary spectacle frame10, the center of mass of the spectacle set is moved rearwardly that is closer to the wearer's face so as to enhance the comfortability of the spectacle set. In addition, the ornamental appearance of the primary spectacle frame10won't be blocked by the detachable shelter frame20.

In addition, it is obvious that the magnets2222can be provided at the magnetic holders15respectively while the magnetic seats222are made of non-magnetic material or soft-magnetic metal having magnetic attraction ability so as to enhance the magnetic engagement between the detachable shelter frame20and the primary spectacle frame10.

FIG. 4illustrates a first alternative mode of the detachable shelter frame20A wherein the magnetic attachment between the primary spectacle frame10A and the detachable shelter frame20A can be located at different positions thereof. The two magnetic holders15A are provided at the rear surfaces of two lower sides of the lenses121A,122A respectively, wherein each of the magnetic holders15A is made of a kind of metal having magnetic attraction ability that is attractive to magnetic material, or that two magnets can be mounted on the rear surfaces of the two lower sides of the lenses121A,122A to function as the two magnetic holders15respectively.

The two supporting arms221A are frontwardly extended from two lower sides of the auxiliary lenses201A,202A respectively towards the magnetic holders15A of the primary spectacle frame10A, wherein the two magnetic seats222A are connected to the supporting arms221A respectively and arranged to magnetically attach to the magnetic holders15A respectively, so as to hold the shelter frame21A of the detachable shelter frame20A behind the frame body21A of the primary spectacle frame10A in position. It is worth to mention that each of the magnetic seats222A is constructed as same as the magnetic seat222of the first preferred embodiment in order to magnetically attract the magnetic seats222A with the magnetic holders15A respectively.

It is apparent that the two supporting arms221A can also be frontwardly extended from two upper sides of the auxiliary lenses201A,202A respectively towards the magnetic holders15A while the two magnetic holders15A are provided at two upper sides of the lenses121A,122A of the frame body11A of the primary spectacle frame10A.

FIG. 5Aillustrates a second alternative mode of the detachable shelter frame20B according to the first preferred embodiment of the present invention, wherein the two magnetic holders15B is provided at the two side extensions131B,132B of the frame body11B respectively. Accordingly, each of the side extensions131B,132B is embodied as the respective magnetic holder15B and is made of a kind of metal having magnetic attraction ability that is attractive to magnetic material or permanent magnet.

The two supporting arms221B are frontwardly extended from two outer sides of the auxiliary lenses201B,202B respectively towards the side extensions131B,132B of the primary spectacle frame10B wherein the two magnetic seats222B which are connected to the supporting arms221B respectively and arranged to magnetically attach to the magnetic holders15B of the side extensions131B,132B respectively so as to hold the shelter frame21B of the detachable shelter frame20B behind the frame body21B of the primary spectacle frame10B in position.

Accordingly, each of the magnetic holders15B comprises an engaging member151B protruded from the respective side extension131B,132B. Each of the magnets2222B has a thickness smaller than a depth of the respective magnetic housing2221B so as to define an engaging groove2223B when the magnet2222B is embedded in the magnetic housing2221B for fittedly engaging with the respective engaging member151B of the magnetic holder15B, so as to further guide the attaching arrangement22B of the detachable shelter frame20B to magnetically attach to the magnetic holders15B of the primary spectacle frame10B.

Also, the clip bridge23A,23B can be incorporated with the detachable shelter frame20A,20B according to the first and second alternative modes of the first embodiment to further secure the attachment of the detachable shelter frame20A,20B behind the primary spectacle frame10A,10B.

In addition, the two magnetic holders15B can be provided on top of the two side extensions1311B,132B of the frame body11B respectively, wherein two supporting arms221B are frontwardly extended from two outer sides of the auxiliary lenses201B,202B respectively to ride over the two side extensions131B,132B of the primary spectacle frame10B, wherein the two magnetic seats222B which are connected to the supporting arms221B respectively and arranged to magnetically attach to the side extensions1311B,132B respectively so as to hold the shelter frame211B of the detachable shelter frame20B behind the frame body21B of the primary spectacle frame10B in position.

It is worth to mention that the supporting arms221B are affixed to rear sides of the auxiliary lenses201B,202B and extended frontwardly towards the magnetic holders15B respectively, such that when the magnetic seats222B are magnetically attach to the magnetic holders15B so as to mount the detachable shelter frame20B behind the primary spectacle frame10B, a distance between the lenses121B,122B of the frame body211B and the auxiliary lenses2011B,202B can be substantially reduced. In other words, the gap between the primary spectacle frame110B and the detachable shelter frame20B can be minimized according to the structural configuration of the detachable shelter frame20B.

FIG. 5Billustrates a third alternative mode of the detachable shelter frame20K, wherein the primary spectacle frame10K is embodied as a rimless spectacle frame, wherein the two side extensions131K,132K are directly fastened to two outer sides of the lenses121K,122K respectively. The two magnetic holders15B are respectively constructed as the rim lockers which are made of permanent magnet or a kind of metal having magnetic attraction ability that is attractive to magnetic material.

The attaching arrangement22K has two receiving cavities221K which are two through holes provided at two outer sides of the auxiliary lenses201K,202K and comprises two magnetic seat222K which are securely mounted at the receiving cavities221K of the auxiliary lenses201K,202K respectively and arranged to magnetically attach to the magnetic holders15K respectively, so as to mount the shelter frame21K of the detachable shelter frame20K behind the frame body21K of the primary spectacle frame10K.

As shown inFIG. 5B, each of the magnetic seats222K comprises a tubular magnetic housing2221K inserted in the receiving cavities221K of the respective auxiliary lens201K,202K and a magnet2222K mounted in the magnetic housing2221K, wherein the magnets2222K are arranged to face toward and align with the magnetic holders15K of the frame body11K when the detachable shelter frame21K is mounted behind the primary spectacle frame10K.

Accordingly, each of the magnetic housing2221K has a receiving groove2223K coaxially formed around an outer circumferential surface wherein a width of the receiving groove2223K should be at least equal to a width of the respective auxiliary lens201K,202K such that when the magnetic housing2221K is mounted in the receiving cavities221K of the respective auxiliary lens201K,202K, an outer circumferential edge of the receiving cavity221K is substantially received in the receiving groove2223K, as shown in FIG.5C. In other words, two outer portions of the magnetic housing2221K are extended to the front and rear side surfaces of the auxiliary lens201K,202K respectively so as to retain the magnet2222K on the auxiliary lens201K,202K in position.

In accordance with the third alternative mode, no supporting arm is required extending from the auxiliary lenses201K,202K towards the magnetic holders15K, wherein the auxiliary lenses201K,202K are directly mounted behind the lenses121K,122K by magnetically attaching the magnetic seats222K to the magnetic holders15K respectively. It minimizes the distance between the auxiliary lenses201K,202K and the lenses121K,122K. In addition, the detachable shelter frame20K can be securely mounted behind the primary spectacle frame10K even though there is no clip bridge is incorporated with the detachable shelter frame20K since the detachable shelter frame20K is close enough to the primary spectacle frame10K and substantially supported by either the wearer's nose or the nose supports16K.

It is apparent that the two magnetic holders15K can be provided at two inner sides of the lenses121K,122K as two rim lockers of the primary bridge111B between the lenses121K,122K wherein the two magnetic seats222K are provided at two inner sides of the auxiliary lenses201K,202K to magnetically attach to the magnetic holders15K respectively.

FIG. 6Aillustrates a fourth alternative mode of the detachable shelter frame20C of the first preferred embodiment, wherein the two magnetic holders15C are mounted at two inner sides of the lenses121C,122C of the primary spectacle frame10C.

The two supporting arms221C are frontwardly extended from two inner sides of the auxiliary lenses201C,202C respectively towards magnetic holders15C of the primary spectacle frame10C wherein the two magnetic seats222C which are connected to the supporting arms221C respectively and arranged to magnetically attach to the magnetic holders15C respectively so as to hold the shelter frame21C of the detachable shelter frame20C behind the frame body21C of the primary spectacle frame10C in position.

Accordingly, each of the magnetic holders15C comprises an engaging member151C protruded from the rear surface of the primary bridge111C. Each of the magnets2222C has a thickness smaller than a depth of the respective magnetic housing2221C so as to define an engaging groove2223C when the magnet2222C is embedded in the magnetic housing2221C for fittedly engaging with the respective engaging member151C of the magnetic holder15C, so as to further guide the attaching arrangement22C of the detachable shelter frame20C to magnetically attach to the magnetic holders15C of the primary spectacle frame10C.

FIG. 6Billustrates a fifth alternative mode of the detachable shelter frame20M, wherein the magnetic holders15M are embodied as two rim lockers of the frame body11M and provided at rear surfaces of two outer sides of the lenses121M,122M of primary spectacle frame10M.

The two supporting arms221M are embodied as two rim lockers of the detachable shelter frame20M and extended from two outer sides of the auxiliary lenses201M,202M respectively towards the magnetic holders15M of the primary spectacle frame10M.

The two magnetic seats222M are provided front sides of the supporting arms221M respectively and arranged to magnetically attach to the magnetic holders15M respectively so as to mount the shelter frame21M of the detachable shelter frame20M behind the frame body21M of the primary spectacle frame10M in position.

Each of the magnetic seats222M comprises a magnetic housing2221M frontwardly extended from the respective supporting arm221M and a magnet2222M which is mounted in the magnetic housing2221M and arranged to face toward and align with the respective magnetic holder15M of the frame body11M when the detachable shelter frame20M is mounted behind the primary spectacle frame10M.

According to the attaching configuration of the spectacle set, the detachable shelter frame20M is substantially mounted behind and close to the primary spectacle frame10M by magnetically attaching the magnetic seats222M to the magnetic holders15M respectively. It minimizes the distance between the auxiliary lenses201M,202M. Moreover, while either the wearer's nose or the nose supports16M, can well support the primary spectacle frame10M as well as the detachable shelter frame20therebehind, no clip bridge is required to incorporate with the detachable shelter frame20M in order to secure the attachment between the detachable shelter frame20M and the primary spectacle frame10M to prevent the detachable shelter frame20M accidentally dropping off from the primary spectacle frame10M.

As shown inFIG. 7, a spectacle set of a second embodiment illustrates an alternative mode of the first embodiment of the present invention, wherein the primary spectacle frame10D comprises two magnetic holders15D, each of which has a magnetic attraction ability, provided at front surfaces of two outer sides of the frame body11D, wherein each of the magnetic holders15D is made of a kind of metal having magnetic attraction ability such as mild steel, low carbon and high grade steel, which is attractive to magnetic material such as permanent magnet.

The attaching arrangement22D comprises two supporting arms221D frontwardly extending from two outer sides of the auxiliary lenses201D,202D of the shelter frame21D for riding on or over two outer sides of the lenses121D,122D of the frame body11D respectively so as to securely mount the shelter frame21D behind the frame body11D. the attaching arrangement22D further comprises two magnetic seats222D which are connected to the supporting arms221D respectively and arranged to magnetically attach to the magnetic holders15D of the primary spectacle frame10D respectively, so as to hold the shelter frame21D of the detachable shelter frame20D behind the frame body11D of the primary spectacle frame10D in position.

As shown inFIG. 8, each of the supporting arms221D, having a L-shaped, comprises a riding body2211D, which is frontwardly extended from the outer side of the respective auxiliary lens201D,202D to ride on the outer side of the respective lens121D,122D of the frame body11D, and a mounting body2212D, which is downwardly and integrally extended from a rear end of the respective riding body2211D towards the magnetic holder15D of the primary spectacle frame10D. In other words, when the shelter frame21D is mounted behind the primary spectacle frame10D, the riding bodies2211D of the supporting arms221D ride over the frame body11D while the mounting bodies2212D downwardly extend in front of the frame body11D and toward the magnetic holders15D respectively, so as to mount the detachable shelter frame20D behind the primary spectacle frame10D in position.

The magnetic seats222D are connected to the mounting bodies2212D of the supporting arms221D respectively to magnetically attach to the magnetic holders15D of the primary spectacle frame10D. Accordingly, the two supporting arms222D ride over and engage with the frame body11D, so as to securely interlock the shelter frame21D behind the primary spectacle frame10D by preventing any upward, downward, and sideward movement of the shelter frame21D.

Each of the magnetic seats222D comprises a magnetic housing2221D downwardly and suspendedly affixed to a distal end of the respective supporting arm221D, wherein each magnetic seat222D is made of non-magnetic material or soft-magnetic metal having magnetic attraction ability such as mild steel, low carbon steel and high grade steel, and a magnet2222D mounted in the magnetic housing2221D, which is arranged to face toward and align with the respective magnetic holder15D of the frame body11D when the shelter frame21D of the detachable shelter frame20D is mounted behind the primary spectacle frame10D.

Furthermore, the magnetic holders15D function as two engaging members frontwardly protruded from the outer sides of the lenses121D,122D of the frame body11D respectively. Each of the magnets2222D has a thickness smaller than a depth of the respective magnetic housing2221D so as to define an engaging groove2223D, so that the magnet2222D is embedded in the magnetic housing2221D for fittedly engaging with the respective engaging member of the magnetic holder15D. In other words, the magnetic holders15D are received in the two engaging grooves2223D respectively to further guide the attaching arrangement22D to magnetically attach to the magnetic holders15D of the primary spectacle frame10D.

As shown inFIG. 7, the detachable shelter frame20D may comprises a clip bridge23D extended between the two auxiliary lenses201D,202D for securely engaging with the primary bridge11ID of the primary spectacle frame10D so as to further secure the attachment of the detachable shelter frame20D behind the primary spectacle frame10D.

FIG. 9illustrates an alternative mode of the detachable shelter frame20E according to the second embodiment of the present invention, wherein the primary spectacle frame10E has the same structure except the two magnetic holders15E are positioned at two inner sides of the lenses121E,122E of the frame body11E.

The attaching arrangement22E comprises two supporting arms221E frontwardly extended from two inner sides of the auxiliary lenses201E,202E of the shelter frame21E for riding on the primary bridge111E of the frame body11E so as to securely mount the shelter frame21E behind the primary spectacle frame10E and two magnetic seats222E which are connected to the supporting arms221E and arranged to magnetically attached to the magnetic holders15E of the primary spectacle frame10E respectively so as to hold the shelter frame21E of the detachable shelter frame20E behind the frame body11E of the primary spectacle frame10E in position.

It is worth to mention that the supporting arms221E have the same structure of the supporting arms221D of the third embodiment to interlock the shelter frame21E with the frame body11E. Accordingly, the supporting arms221E also function as the bridge clip to ride on top of the primary bridge111E of the frame body11E for engaging with the primary bridge11E so as to securely interlock the shelter frame21E behind the primary spectacle frame10E to prevent any upward, downward, and sideward movement of the shelter frame21E with respect to the frame body11E.

Referring toFIG. 10, a spectacle set according to a third embodiment illustrates an alternative mode of the first embodiment of the present invention, wherein the two magnetic holders15F is provided at the outer sides of the lenses121F,122F of the frame body11F respectively.

The primary spectacle frame10F further comprises a pair of rim covers17F rearwardly extended from the lenses121F,122F respectively for encircling the two auxiliary lenses201F,202F of the shelter frame21F respectively when the detachable shelter frame20F is mounted behind the primary spectacle frame10F.

The two supporting arms221F are outwardly extended from two outer sides of the auxiliary lenses201F,202F respectively towards magnetic holders15F of the primary spectacle frame10F wherein the two magnetic seats222F which are connected to the supporting arms221F respectively and arranged to magnetically attach to the magnetic holders15F respectively so as to hold the shelter frame21F of the detachable shelter frame20F behind the frame body21F of the primary spectacle frame10F in position.

Each of the magnetic seats222F comprises a magnetic housing2221F provided on the respective supporting arm221F wherein each magnetic seat222F is made of non-magnetic material or soft-magnetic metal having magnetic attraction ability such as mild steel, low carbon steel and high grade steel, and a magnet2222F mounted in the magnetic housing2221F, which is arranged to face toward and align with the respective magnetic holder15F of the frame body11F when the shelter frame21F of the detachable shelter frame20F is mounted behind the primary spectacle frame10F.

As shown inFIG. 11, each of the magnetic holders15F has an engaging slot151F formed at the outer side of the respective lenses121F,122F to guide the two magnetic seats222F to automatically align and attract with the two magnetic holders15F respectively.

Accordingly, the rim covers17F, each of which has a width at least wider than a gap formed between the lens121F,122F and the auxiliary lens201F,202F, encirclingly cover the gap between the auxiliary lenses201F,202F and the lenses121F,122F and periphery edges of the two auxiliary lenses201F,202F of the detachable shelter frame20F respectively, so that the shelter frame21F is hidden behind the frame body11F to keep the ornamental appearance of the primary spectacle frame10F, as shown in FIG.11.

FIG. 12illustrates an alternative mode of the detachable shelter frame20G according to the above third embodiment of the present invention, wherein the two magnetic holders15G is provided at the inner sides of the lenses121G,122G of the frame body11G respectively. Accordingly, the magnetic holders15G are provided on the primary bridge111G of the primary spectacle frame10G, as shown in FIG.12.

The two supporting arms are outwardly extended from two inner sides of the auxiliary lenses201G,202G respectively to form a bridge221G between the auxiliary lenses201G,202G of the primary spectacle frame10G wherein the two magnetic seats222G which are provided on front surface of the bridge221G and arranged to magnetically attach to the magnetic holders15G respectively so as to hold the shelter frame21G of the detachable shelter frame20G behind the frame body21G of the primary spectacle frame10G in position.

Each of the magnetic seats222G comprises a magnetic housing2221G provided on the bridge221G wherein each magnetic seat222G is made of non-magnetic material or soft-magnetic metal having magnetic attraction ability such as mild steel, low carbon steel and high grade steel, and a magnet2222G mounted in the magnetic housing2221G, which is arranged to face toward and align with the respective magnetic holder15G of the frame body11G when the shelter frame21G of the detachable shelter frame20G is mounted behind the primary spectacle frame10G.

Each of the magnetic holders15G has an engaging groove151G indented on a rear surface of the primary bridge111G of the primary spectacle frame10G, wherein each of the magnets2222G has a thickness larger than a depth of the respective magnetic housing2221G so as to form an engaging member for fittedly engaging with the respective engaging groove151G of the magnetic holder15G. Therefore, when the detachable shelter frame20G is mounted behind the primary spectacle frame10G, the shelter frame21G is hidden behind the frame body11G since the two auxiliary lenses201G,202G of the shelter frame21G are encirclingly covered by the rim covers17G of the primary spectacle frame10G respectively.

Since the detachable shelter frame according to the above preferred embodiments and their alternatives is mounted behind the primary spectacle frame, the detachable shelter frame is held by the primary spectacle frame and supported by either the wearer's nose or the nose supports, so that the detachable shelter frame will never drop off from the primary spectacle frame accidentally. Thus, the ornamental appearance of the primary spectacle frame won't be blocked by the detachable shelter frame. Due to the rear-attaching configuration of the detachable shelter frame, the distance between the lenses of the primary spectacle frame and the auxiliary lenses of the detachable shelter frame can be minimized without altering the original structural design of the primary spectacle frame.

While the foregoing description and diagram describe the preferred embodiments and their alternatives, it should be appreciated that certain obvious modifications, variations, and substitutions may be made without departing from the spirit and scope of the present invention by mounting the detachable shelter frame behind the primary spectacle frame with other attachment methods such as clipping. For example, the attachment between the primary spectacle frame and the detachable shelter frame can be any existing attaching device, such as magnetic engagement, clipping engagement, or resilient engagement.

It will thus be seen that the objects of the present invention have been fully and effectively accomplished. It embodiments have been shown and described for the purposes of illustrating the functional and structural principles of the present invention and is subject to change without departure form such principles. Therefore, this invention includes all modifications encompassed within the spirit and scope of the following claims.