IES20130197A2

IES20130197A2 - Spectacles assembly including a leaf spring

Info

Publication number: IES20130197A2
Authority: IE
Inventors: Li Guanlin
Original assignee: Sio Ltd
Priority date: 2012-06-19
Filing date: 2013-06-19
Publication date: 2014-01-01
Also published as: GB2503354B; HK1178375A2; GB2503354A; IES86347B2; JP3185562U; CN202649622U; GB201310858D0

Abstract

A spectacles assembly with a leaf spring including a spectacle frame body and arms pivotally connected to a corresponding flap connecting base on both sides of the spectacle frame body, a catch piece is provided on each flap connecting base, which is clipped on the flap connecting base, the front end of the arm is pivotally connected to pivot holes on the sides of the catch piece through pivot rods, and within the catch piece, an R-shaped leaf spring is provided between the flap connecting base and the arm, the outer side of the front end of the arm is in contact with the R-shaped leaf spring when the arm is unfolded; the front end of the arm abuts the R-shaped leaf spring when folded.

Description

FIELD OF THE PRESENT INVENTION This invention refates to a kind of spectacles or spectacle frame, in particular, io spectacles assembled using a leaf spring without welding or screws.

BACKGROUND ART At present, typical spectacles generally have a frame body and a pair of arms is connected thereto by screws. Such simple construction facilitates production, but upon prolonged use it is found that due to repeated folding and unfolding of the arms, the threads in the screws connecting the arms and the spectacle frame may come off resulting in the spectacles requiring repair. In cases where it is beyond repair, the spectacles can no longer be used and is to be replaced. This shortens the life of the spectacles and inevitably costs more to the customers.

SUMMARY OF THE INVENTION An object of the present invention is to provide a kind of spectacles assembled with a biasing means, which is a leaf spring. The technical problem to be solved is to extend the life of the spectacles.

According to the present invention there is provided a spectacles assembly with a leaf spring, comprising a spectacles frame body and arms pivotally connected to a connecting base at either side of the spectacles frame body, wherein a catch piece is provided on each said connecting base, and which is respectively clipped on to each connecting base, the front end of each arm being pivotally connected to a pivot hole on a side of the catch piece through a pivot rod, within the catch piece; wherein an R-shaped leaf spring is provided between the connecting base and the arm, wherein the outer side of the front end of the arm is in contact with the R-shaped leaf spring when the arm is unfolded; and wherein a front end of the arm presses against the R-shaped leaf spring when folded.

The catch piece of the present invention comprises a rectangular surface and first flaps, each flap respectively connecting the upper and lower sides of the rectangular surface, wherein the cross-section of the catch piece is C-shaped, wherein the JE 130197 rectangular surface is perpendicular to the first flaps, the outer edge of the first flap is oblique, wherein a portion along the outer edge of each first flap is folded 180° inwardly to provide a second flap, the second flap is arranged to lean towards the first flap, a first extension surface is provided at the rear end of the rectangular surface, a third flap is provided at the rear end of the first extension surface extending and bending at 90° in the w same direction as the first flaps, pivot holes are provided on the second flaps, the inner end surface of the catch piece is in contact with and parallel to the outer end surface of the flap connecting base of the frame body, wherein the third flap abuts the rear end surface of the flap connecting base, and wherein the first flap on the two sides are respectively arranged at the upper and lower ends of the flap connecting base.

The R-shaped leaf spring may comprise a first leaf spring pin, a second leaf spring pin and a U-shaped bend connecting the rear end of the first leaf spring pin and the rear end of the second leaf spring pin, wherein second extension surfaces extending longitudinally from the upper and lower sides of the second leaf spring pin are provided, wherein a tab bending outwardly Is provided on the outer end surface of the second leaf spring pin, wherein the front end of the second leaf spring pin of the R-shaped leaf spring abuts the third flap, and wherein the front end of the first leaf spring pin presses against the outer side of the front end of the arm limiting movement of the arm, so that the arm may rotate about pivot rods within the pivot holes acting as pivots.

A first aperture may be provided on the flap connecting base to correspond with the tab, the tab being fitted within the first aperture.

A ball joint may be provided on each nose pad mount of the spectacles frame body, wherein a nose pad portion of the spectacles frame body is fitted over the ball joint, so that said nose pad portion can rotate 360°about the ball joint.

A first protrusion may be provided on the front end of each arm, a pivot rod being provided at both the upper and lower sides of the first protrusion.

At each outer side of the lens hole portions of the spectacles frame body there may be a first elongate slot opening along the lens hole portion of the spectacles frame body up to the middle part of the corresponding flap connecting base.

IE 130 1 97 The rear end of the first elongated slot may be connected to the second elongated slot orthogonally, the second elongate slot being provided on the corresponding fiap connecting base.

A fourth flap bending inwardly may be provided at the front end of the arm, a fifth io flap bending outwardly and parallel to the arm is provided at the front end of the fourth flap, a first protrusion being provided at the front end of the fifth fiap.

A gap may be provided at the lower side of the rear end of each flap connecting base.

Compared with the prior art, this invention may adopt a catch piece with a Cshaped cross section arranged on the flap connecting base at both sides of the spectacle frame body so that the arm is pivotally connected to the pivot holes inside the catch piece through the pivot rods, a leaf spring being arranged between the catch piece and the arm enabling the leaf spring to act on the arm during folding and unfolding, so that the pivotal connection between the arm and the catch piece is secured without welding, avoiding screw threads coming off in cases where screws are deployed, and the life of the spectacles can thereby be extended.

BRIEF DESCRIPTION OF THE DRAWINGS The invention is further described by means of example but not in any limitative sense with reference to the accompanying drawings of which: Figure 1 is a schematic structural view of a frame body of the present invention in an unfolded state; Figure 2 is a schematic structural view of the frame body ; Figure 3 is a schematic structural view of a nose pad; Figure 4 is a schematic structural view of the connection between the nose pad and the frame body; Figure 5 is a schematic structural view of an R-shaped leaf spring of the present invention in an unfolded state; IE 1 3 Ο 1 9 7 Figure 6 is a front view ofthe R-shaped leaf spring ; Figure 7 is a top view of the R-shaped leaf spring io Figure 8 is a schematic perspective view of the structure of a catch piece of the present invention.

Figure 9 is a schematic structural view ofthe catch piece in an unfolded state; is Figure 10 is a schematic structural view of the catch piece; Figure 11 is a front view of an arm of the present invention; Figure 12 is a top view of the arm; Figure 13 is a first schematic structural view of the connection of the spectacles assembled with the leaf spring; Figure 14 is a second schematic structural view of the connection of the spectacles assembled with the leaf spring; DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in Figure 1, a spectacles frame body (1) is manufactured by a wire30 cutting process. A flap connecting base (3) is provided on both sides of the spectacles frame body (1). A first elongate siot (21) is opened along each lens hole portion (27) of the spectacles frame body (1) up to the middle part of the corresponding flap connecting base (3) on catch piece (5). The first elongate slot (21) is provided in the middle ofthe flap connecting base (3) on catch piece (5), A second elongated siot (25) that opens upwardly is provided at the tip of the rear end of the first eiongate slot (21) perpendicular to the first elongate slot (21). On the end of the rear portion of the first elongate slot (21) teeth (28) are provided for engaging, when catch piece (5) is clipped on the flap connecting base and the first elongated slot is clamped tightly. The lens is are secured within Sens hole portion (27). Teeth (28) function to limit displacement. A first aperture (16) is provided near the rear end ofthe flap connecting base (3). The first aperture (16) is square shaped. Gap (24) is provided at the lower side of the rear end of the flap connecting base (3).

IE 13 0 19 7 Nose pad mount (18) is provided adjacent the lens hole portion or between two lens hole portions of the frame body (1).

As shown in Figures 2 and 4, each flap connecting base (3) extends rearwardly or bends backward at the outer side of the spectacles or connecting part between the flap io connecting base (3), frame body forming an angle with the spectacles frame body (1) of approximately 90°. Bal! joint (19) is mounted on the nose pad mount (18). Nose pad portion (29) of the spectacles frame body (1) is fitted over the ball joint (19) enabling the nose pad portion (29) to rotate 360° about the ball joint (19). is As shown in Figure 3, a protuberance (30) is provided on the surface of the rear end of the nose pad portion (29), a spherical recess (31) that envelops ball joint (19) is provided at the centre of the protuberance (30). A connecting groove (32) communicating the spherical recess (31) is provided on the protuberance (30), when the nose pad portion (29) is mounted on the. nose pad mount (18). The ball joint (9) is fitted in the spherical recess (31). The nose pad mount (18) connecting the ball joint (19) is arranged within the connecting groove 32 on one side.

As shown in Figure 5, said R-shaped leaf spring (4) is a strip-shaped structure when unfolded. A second extension surface (14) extending longitudinally along the R25 shaped leaf spring (4) is provided on each of the upper and lower ends on the right side of the R-shaped leaf spring (4) making the R-shaped leaf spring (4) T-shaped. A tab (15) protruding outwardly is provided on the right side of the R-shaped leaf spring (4) adjacent the edge of the right side. The tab (15) is dimensioned to match the first aperture (16), As shown in Figures 6 and 7, the unfolded leaf spring (4) is bent along the midline to form a flexible R-shaped leaf spring (4) with an R-shaped cross section. The R-shaped leaf spring (4) has a first leaf spring pin (11) and a second leaf spring pin (12). The rear end of the first leaf spring pin (11) is connected to the rear end of the second leaf spring pin (12) at a U-shaped bend (13). The second extension surfaces (14) are located on the second leaf spring pin (12). The second leaf spring pin (12) may be the same end having the second extension surfaces (14).

From the schematic view of the unfolded state of said catch piece (5) as shown in Figures 8, 9 and 10, catch piece (5) is composed of a rectangular surface (26) and a first flap (7) provided at the upper and lower sides of the rectangular surface (26). The edge of the outer side of each first flap (7) is oblique. The rear side of each first flap (7) aiso IE 130 197 has an oblique edge. A second flap (8) is provided at the outer side of each first flap (7) and is oblique. Each second flap (8) is provided with a pivot hole (6) near the rear side and a positioning hoie (33) near the front side. After bending the first flap (7) at the two sides 90 degrees rearwardly upwardly, the catch piece (5) becomes C-shaped. The catch piece (5) is a polygon with an oblique edge at the upper end as viewed from Figure 10. io The second flap (8) is bent 180 degrees inwardly. The surface of the inner side of the second flap (8) is superimposed on the surface of the inner side of the first flap (7). A first extension surface (9) is provided at the rear end of the rectangular surface (26). A third flap (10) bending in the same direction as the first flaps (7) is provided at the rear end of the first extension surface (9). The third flap (10) is perpendicular to the rectangular is surface.

As shown in Figures 11 and 12, the front end of said arm (2) is provided a first protrusion (20). The centre of the front end surface of the first protrusion (20) is provided with a concave curvature. A pivot rod (17) is provided at the upper and lower ends of the first protrusion (20). A fourth flap (22) bending almost 90 degrees inwardly is provided at the front end portion of the arm (2). A fifth flap (23) parallel to the arm (2) is provided at the front end of the fourth flap (22). A first protrusion (20) is provided on the fifth flap (23).

As shown in Figures 13 and 14, by clipping catch piece (5) onto the outer side of the flap connecting base (3), first flaps (7) will ciamp the upper and lower sides of the flap connecting base (3) tightly. After clamping tight the flap connecting base (3), the third flap (10) abuts against the rear end surface of the flap connecting base (3) while the lens of the spectacles can be secured within the iens hole portion (27) ofthe frame body (1). The R-shaped leaf spring (3) opening up to the rear end is fitted through the tabs (15) of the second leaf spring pin (12) into the first aperture (16). The front end of the second leaf spring pin (12) abuts the inner side ofthe third flap (10). The first leaf spring pin (11) is on the same level as the outer side of the first flaps (7). The U-shaped bend (13) forms a contact with the inner side of the flap connecting base (3). The arm (2) is slotted into the pivot holes (6) through the use of pivot rods (17). The surface of the outer side ofthe first leaf spring pin (11) presses the arm (2) into the pivot holes (6) thus enabling the arm (2) to rotate about the pivot rods in the pivot holes. When the arm (2) is unfolded, the first protrusion (20) is parallel and forms a contact with the first leaf spring pin (11) of the Rshaped leaf spring (4). When folded, the first protrusion (20) at the front end of the arm (2) presses against the R-shaped leaf spring (4), so that the first protrusion (20) abuts the first leaf spring pin (11) of the R-shaped leaf spring (4). The arm (2) and the flap connecting base (3) are arranged in that the angle therebetween is close to 90 degrees.

IE 130 197 The nose pad portion (29) is mounted on the ball joint (19) on the nose pad mount (18). The nose pad portion (29) rotates 360 degrees about the ball joint (19).

When mounting the lens, a round needle with thickness greater than the flap connecting base (3) is inserted into the gap (24), making the second ieaf spring pin (12) of io the R-shaped leaf spring (4) to spring up. At this time, the tab (15) is iocated above the first aperture (16) so that the frame body can be released smoothly so that the lens can be replaced.

The spectacles frame assembled with leaf spring of the present invention may be is entirety produced by laser co-linear cutting process using sheet material. Thus no welding is needed. This reduces production costs. Lens installation is made very simple since the spectacles frame has no screws. There is no risk of loosening of screws, and thus the life of the spectacles can be extended. As the nose pad portions and the ball joints on the nose pad mounts are both concentric in structure, the nose pad portions can 2o rotate 360° so that they are in close contact with the user's nose whether the user is moving or still, providing a safe and comfortable wearing experience. Since this design contains leaf springs, the springy effects during the inward folding and outward unfolding of the spectacle frame will bring comfort to the user.

Claims

5 Claims

1. A spectacles assembly with a leaf spring, comprising a spectacles frame body (1) and arms (2) pivotally connected to a connecting base (3) at either side of the spectacles frame body (1), wherein a catch piece (5) is provided on each said connecting base (3), io and which is respectively clipped on to each connecting base (3), the front end of each arm (2) being pivotally connected to a pivot hole (6) on a side of the catch piece (5) through a pivot rod (17), within the catch piece (5); wherein an R-shaped leaf spring (4) is provided between the connecting base (3) and the arm (2), wherein the outer side of the front end of the arm (2) is in contact with the R-shaped leaf spring (4) when the arm (2) is is unfolded; and wherein a front end of the arm (2) presses against the R-shaped leaf spring (4) when folded,

2. A spectacles assembly according to Claim 1, wherein said catch piece (5) comprises a rectangular surface (26) and a first flap (7) connected at upper and lower 20 sides of the rectangular surface (26), the cross-section of the catch piece (5) is C-shaped, the rectangular surface (26) and the first flaps (7) are arranged orthogonally, the outer edge of each first flap (7) is oblique, a second flap (8) bending 180° inwardly is provided on the outer edge of the first flaps (7), each second flap (8) is obliquely arranged on the corresponding first flap (7), a first extension surface (9) is provided at a rear end of the 25 rectangular surface (26), a third flap (10) bending 90° in the same direction as the first flaps (7) is provided on the rear end of the first extension surface (9), said pivot hole (6) is arranged on each second flap (8), the inner end surface of the catch piece (5) being in contact and parallel to the outer end face of the connecting base (3), the third flap (10) abuts a rear end surface of the connecting base (3), and wherein the first flap (7) is 3o arranged at both upper and lower ends of the connecting base (3).

3. A spectacles assembly according to Claim 2, wherein said R-shaped leaf spring (4) comprises a first leaf spring pin (11), a second leaf spring pin (12) and a U-shaped bend (13) connecting the rear end of the first leaf spring pin (11) with the rear end of the 35 second leaf spring pin (12), a second extension surface (14) extending longitudinally from the upper and lower sides ofthe second leaf spring pin (12), a tab (15) bending outwardly is provided on the outer end surface of the second leaf spring pin (12), a front end of the second leaf spring pin (12) of the R-shaped leaf spring (4) contacts the third flap (10), and wherein a front end of the first leaf spring pin (11) presses against the outer side of the 40 front end of the arm (2), so that the arm (2) rotates about the pivot rods (17) within the pivot holes (6) acting as pivots. IE 13 0 19 7

4. A spectacles assembly according to Claim 3, wherein a first aperture (16) provided on said connecting base (3) is located to correspond with the tab (15), and wherein the tab (15) is fitted within the first aperture (16). io

5. A spectacles assembiy according to any preceding claim, wherein a first protrusion (20) is provided on a front end of each arm (2), the pivot rod (17) is arranged at the upper and lower sides of the first protrusion (20).