Lens exchange structure of spectacles

Abstract

A lens exchange structure of spectacles is disclosed. The lens exchange structure comprises a lens frame, a lens, a pressing part, and an elastic part. A channel is disposed on the bottom of the lens frame. An intercalation hole is disposed on the inner side of the central nose bridge. The pressing part is inserted into the intercalation hole. The pressing part has hook parts and an accommodating groove for receiving the elastic part. One terminal of the elastic part is against the wall of the lens frame, and the lens has positioning holes for receiving the hook parts. Therefore, a pressing action may be used to compress or release the elastic part to let the hook parts correspondingly hook in or release from the positioning holes. The effect of easy lens assembling and exchanging as well as stable positioning can be accomplished.

Claims

1. A lens exchange structure of spectacles, comprising: a lens frame comprising a channel disposed on a bottom of the lens frame, an intercalation hole disposed on an inner side of a central nose bridge, and a through hole disposed on one side of the channel to correspond to the intercalation hole; a pressing part correspondingly inserted into the intercalation hole and having a pressing portion, wherein the pressing part comprises a connection rod disposed on the center of the pressing portion, a movable positioning slot disposed below the connection rod to correspond to the through hole of the lens frame, an accommodating groove disposed on a terminal center of the connection rod, and two hook parts disposed on the two terminals of the connection rod; an elastic part correspondingly assembled in the accommodating groove of the pressing part, and another terminal of the elastic part being against an inner wall of the intercalation hole of the lens frame; a locating pin correspondingly inserted into the through hole of the lens frame and the movable positioning slot of the pressing part to press and position the pressing part in the intercalation hole; and a lens correspondingly inserted in the channel of the lens frame, wherein the lens comprises a groove disposed at the connection rod of the pressing part to correspond to a top periphery of the lens, and two positioning holes located on two sides of the groove to correspond to the hook parts.

2. The lens exchange structure of claim 1, wherein the lens is a one-piece lens.

3. The lens exchange structure of claim 2, further comprising a protrusion disposed on the inner wall of the intercalation hole of the lens frame to limit and position the elastic part.

4. The lens exchange structure of claim 1, further comprising a protrusion disposed on the inner wall of the intercalation hole of the lens frame to limit and position the elastic part.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a perspective diagram showing a disassembled structure of this invention.

(2) FIG. 2 is a perspective diagram showing an assembled structure of this invention.

(3) FIG. 3 is a longitudinal cross-sectional diagram showing the lens assembled in this invention.

(4) FIG. 4 is a horizontal cross-sectional diagram showing the lens assembled in this invention.

(5) FIG. 5 is a horizontal cross-sectional diagram showing the state of being pressed to release from the limiting position according to this invention.

DETAILED DESCRIPTION

(6) To more completely and clearly illustrate the technical means and effects of this invention, the detailed descriptions are set forth below. Please refer to the disclosed figures and the reference numbers.

(7) Please refer to FIGS. 1-2, which are the diagrams showing the lens exchange structure of spectacles according to this invention. The lens exchange structure comprises a lens frame 1, a pressing part 2, an elastic part 3, a locating pin 4, and a lens 5.

(8) In the lens frame 1, a channel 11 is disposed on a bottom of the lens frame 1. An intercalation hole 12 is disposed on the inner side of the central nose bridge. A through hole 13 is disposed on one side of the channel 11 to correspond to the intercalation hole 12.

(9) The pressing part 2 is correspondingly inserted into the intercalation hole 12. The pressing part 2 mainly has a pressing portion 21. A connection rod 22 is disposed on the center of the pressing portion 21. A movable positioning slot 23 is disposed below the connection rod 22 to correspond to the through hole 13 of the lens frame 1. An accommodating groove 221 is disposed on the terminal center of the connection rod 22. Moreover, two hook parts 24 are disposed on the two terminals of the connection rod 22.

(10) The elastic part 3 is correspondingly assembled in the accommodating groove 221 of the pressing part 2. The other terminal of the elastic part 3 is against an inner wall of the intercalation hole 12 of the lens frame 1.

(11) The locating pin 4 is correspondingly inserted into the through hole 13 of the lens frame 1 and the movable positioning slot 23 of the pressing part 2 to press and position the pressing part 2 in the intercalation hole 12.

(12) The lens 5 is correspondingly inserted in the channel 11 of the lens frame 1. A groove 51 is disposed at the connection rod 22 of the pressing part 2 to correspond to the top periphery of the lens 5. Two positioning holes 52 are located on two sides of the groove 51 to correspond to the hook parts 24.

(13) Please refer to FIGS. 1-5. When the lens exchange structure is assembled, a one-piece lens may be used as the lens 5. A protrusion 121 is disposed on the inner wall of the lens frame 1 for being against the elastic part 3. After the accommodating groove 221 of the pressing part 2 is inserted by the elastic part 3, the pressing part 2 is inserted into the intercalation hole 12. At this time, the protrusion 121 may position the elastic part 3. The locating pin 4 is correspondingly inserted into the through hole 13 of the lens frame 1 and the movable positioning slot 23 of the pressing part 2 to fix the pressing part 2 in the intercalation hole 12.

(14) Next, when the lens 5 is assembled or changed, the pressing portion 21 of the pressing part 2 is pressed down to compress the elastic part 3. The hook parts 24 of the pressing part 2 move inward and position in the channel 11. At this time, the lens 5 is inserted into the lens frame 1 from the channel 11, and the groove 51 of the lens 5 intercalates the connection rod 22. Afterwards, the pressing part 2 is released to return the pressing part 2, and the hook parts 24 hook the positioning holes 52 to stably assemble the lens 5, as shown in FIGS. 3-4.

(15) When the lens 5 is changed, only the pressing portion 21 of the pressing part 2 is pressed down to release the hook parts 24 from the positioning holes 52 of the lens 5, as shown in FIG. 5.

(16) In light of the foregoing embodiments of this invention disclosing the structures and use, this invention has the following advantages, comparing with the conventional structures:

(17) 1. In the lens exchange structure of this invention, the pressing techniques uses the pressing part to fix and release the hook parts to accomplish the effects of assembling and disassembling the lens exchange structure.

(18) 2. In the lens exchange structure of this invention, the lens may be easily assembled and changed to have the effect of easy operation.

(19) 3. In the lens exchange structure of this invention, the fix and combination of the positioning holes and the hook parts can steadily position the lens to accomplish the effect of the effective catch.