AU652352B2 - Cap closing member for container opening - Google Patents

Description

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AUSTRALIA

PATENTS ACT 1952 Form COMPLETE SPECIFICATION

(ORIGINAL)

FOR OFFICE USE Short Title: Int. Cl: Application Number: Lodged: Complete Specification-Lodged: Accepted: Lapsed: Published: 06 6

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0@ S S Priority: Related Art: TO BE COMPLETED BY APPLICANT Name of Applicant: YOSHINO KOGYOSHO CO., LTD.

oo0 0* 0 6 0 Address of Applicant: 2-6, OSHIMA 3-CHOME

KOTO-KU

TOKYO

JAPAN

Actual Inventor: Address for Service: GRIFFITH HACK CO., 601 St. Kilda Road, Melbourne, Victoria 3004, Australia.

Complete Specification for the invention entitled: CAP CLOSING MEMBER FOR CONTAINER OPENING.

The following statement is a full description of this invention including the best method of performing it known to me:- Nz i

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CAP CLOSING MEMBER FOR CONTAINER OPENING Background of the Invention This invention relates to a cap closing member for a container opening and more particularly a cap closing member provided with a resilient repelling lid.

Many({types of containers with a resilient repelling lid are well known in the art and their typical lid is a so-called three-point hinged cap in the prior art.

The cap described above is constructed such that a rear upper end of a main body of the cap and a rear lower end of the lid 6 mounted on the upper surface of the cap to close a pouring

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port formed in the upper surface of the cap are connected by S* a pair of first right and left hinges properly spaced apart.

iiv/ere4 A lower end of an -~ein t U-shaped resilient plate arranged between the first hinges is connected to a rear part of the main body of the cap lower than the first hinge through a second hinge.

In addition, the other end of the resilient plate is connected to the upper surface of the more forward lid than the first hinge throu h the-third hinge.

In addition to the foregoing prior art, there is Japanese Utility Model Application Sho 63-71518 filed in Japan by the present applicant.

This utility model is made such that a circular container and a similar circular lid for closing the upper surface of the container in such a way as it may be opened or closed are connected to each other by the first resilient connector plate through a 4 .i A^.

r 15 THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS: '4 thin-walled hinge.

i At both right and left sides of the first resilient plate, their lower ends are connected to an outer surface of the container surftce of and their upper ends are connected to an outer -surefee.. the lid through a thin-walled hinge, respectively, with the second and third wider resilient connector plates longer than the first resilient plate.

When the lid is closed, the second and third resilient connector plates as viewed from above are resiliently repelled S* +ruvcote 4 V-shape from a 44 ha- in cross section and in turn when the lid is released to open, the resilient connector plates are resiliently rUctoe V-she e.n w\ vered 4-rusced V-A"pe repelled from their -hapoin cross section to a -hapas viewed from a rear side thereof.

In case of the prior art cap provided with a lid of a threepoint hinge mechanism, its outer appearance is deteriorated due to the fact that its (verted L-shaped resilient plate is exposed at an outer surface of a rear half part of a top wall of the lid.

In addition, in case of this prior art, the right and left outer ends of the first hinge are projected in outward edge form, resulting in that their projections may deteriorate a user's feeling in touching operation.

Further, it sometimes occurs that some dusts enter slits and further enters into the cap. The lid ha slits which are formed n the cap so as to make the aforesaid inverted L-shaped resilient plate.

In addition, since the L-shaped resilient plate or the first hinge is projected, the projection may hinder a closing operation S-2- ^l I I of the cap with an automatic cap device and so it shows a problem that the cap may not be grasped.

The present invention has as its own issue of resolving the aforesaid problem and it is an object of the present invention to provide a lid closing member for a container opening having such a structure as one in which the hinge part is projected rearwardly.

Summary of the Invention The invention provides a lid member for a container opening comprising: a main body of circular cross-section having an opening at its upper surface and having a rear surface; a lid having a rear surface and the same crosssectional shape as that of said main body for closing said 15 opening and mounted on the upper surface of said main body, the lid assuming an open position and a closed position; and at least two resilient belt plates connecting the rear surfaces of said main body and the lid to each other, wherein S each of the resilient belt plates forming a trapezoid 0 having a bottom side and a top side parallel to each other and a pair of slant sides each connecting an end of the bottom side and an end of the top side, the top sides of the resilient belt plates being oppositely faced to each other, one slant side of each of the resilient belt plates being a lower side and connected to the rear surface of said main body through a thin-walled hinge and the other slant side of each of the resilient belt plates being an upper side and connected to the rear surface of the lid through another thin-walled hinge, each of the resilient plates being connected to the rear surface of the main body and the rear surface of the lid having a circular cross-section to cause a cross-section crossing at a right angle with the resilient belt plates to draw an inverted truncated V-shape in the closed position of 4the lid, and each of the resilient belt plates primarily rotating as the lid pivots around the upper thin-walled hinge when the lid is open or closed and secondarily reversed when each of the resilient belt plates is pivoted around the lower thin-walled hinge to cause the crosssectional shape of the resilient belt plates to adopt a truncated V-shape in the open position of the lid.

With such an arrangement of the present invention as described above, the resilient belt plates are provided at the rear side surfaces of the main body and the lid, resulting in that they may not deteriorate an outer appearance caused by an exposure of the resilient belt plates on the upper surface of the lid as found in the container having the lid formed by the prior art threepoint hinge mechanism.

Brief Description of the Drawings :Figs. 1 to 5 illustrate the first preferred embodiment.

Fig. 1 is a top plan view for showing a lid closing member of the first preferred embodiment.

s Fig.2 is a side elevational view of Fig.l.

Fig.3 is a rear view for showing a lid closed state.

Fig.4 shows a shape of right crossed section of a resilient belt plate.

is an illustrative view for showing an opening or closing of a lid caused by a resilient reversing of the resilent belt plate.

Figs.6 to 9 illustrate the second preferred embodiment.

Fig.6 is a side elevational view of the second preferred embodiment.

Fig.7 is a top plan view of Fig.6.

Fig.8 is a rear view for showing a lid closed state.

Fig.9 is an illustrative view for showing an opening or closiing of a lid under a resilient reversing of each of the resilient belt plates is a rear view for showing the third preferred embodiment.

Figs.11 to 13 show the fourth preferred embodiment.

Fig.11 is a top plan view of the fourth preferred embodiment.

e. Fig.12 is a side elevational view of Fig.11.

Fig.13 iU a rear view with the resilient belt plates being broken away.

**e Description of the Preferred Embodiments Referring now to the drawings, some preferred embodiments of the present invention will be described.

(First Preferred Embodiment) In Figs.1 to 4, reference numeral 1 denotes a main body having a circular cross-section with an opening 2 at its upper surface.

I ~r I I I r aLII r The main body 1 may be formed of a cap with its lower end surface being released to open or of a container with its lower end surface being closed.

Reference numeral 3 denotes a lid mounted on the upper surface of the main body 1 to close the opening 2. The lid has the same cross-sectional shape as that of the main body 1. In this example, the main body 1 and the lid 3 are circular shape as viewed from their top surfaces.

The lid 3 shown in the figure is vertically provided with a plug 4 to be fitted into the opening 2 from a central lower o* surface thereof and has a peripheral wall 6 vertically suspended from a top plate 5 thereof.

There are provided at least a pair of resilient belt plates 7 and 7 for use in connecting the rear side surfaces of the main body 1 and the lid 3 to each other. The main body 1 and the lid 3 are provided with, at their rear right and left side surfaces grooves 8 and 9 communicating to each other in a longitudinal direction~over the main body 1 and the lid 3 when the lid 3 is closed in correspondence with a pair of resilient belt plates 7 S* and 7.

Each of the lower ends of the resilient belt plates 7 and 7 is connected to the lower ends of-the grooves 8 and 9 through the thin-walled hinges 10 and 10, and each of the upper ends of the resilient belt plates 7 and 7 is connected to the uppe ends of the grooves 8 and 9 through the thin-walled hinges 11 and 11.

When the lid is closed over the cap, a-pair of resilient 6- *'j 0 belt plates 7 are stored within each of the grooves 8 and 9.

In this case, each of the resilient belt plates 7 may form as shown in Fig.3 a trapezoid having the bottom side 7a and the top side 7b which are parallel to each other and further having a pair of slant sides 7c and 7d connecting each of both ends of the bottom side 7a and both ends of the top side 7b. Each of the resilient belt plates 7 and 7 is connected such that their top sides 7b and 7b are oppositely faced to each other and connected to the rear side surface of the lid 3. At this time, one slant side 7d of each of the resilient belt plates 7 is low and connected to the rear surface of the main body 1 tlrough the thin-walled hinge e* the other slant side 7c of each of the resilient belt plates 7 is high and connected to the rear surface of the lid 3 15 through the thin-walled hinge 11.

As shown in Fig.3, each of the resilient belt plates 7 is connected to the rear side surface of the main body 1 (having a circular cross-section) and the rear side surface of the lid 3 (having a circular cross-section), thereby the 20 cross-sectional shape of the plates crossing at a right angle with the resilient belt plates 7 forms an inverted truncated sees V-shape as shown in Fig.4.

In addition, as viewed from the rear side surfaces of the main body 1 and the lid 3, both ends of the thin-walled hinges 10 at the lower side of each of the resilient belt plates 7 are placed on a curved line 31 drawn to extend upwardly around a center of curvature of any point on a center line 30 between the two resilient belt plates 7. Both ends of the upper thin-walled hinges 11 are placed on a curved line 32 drawn to extend downwardly with a center of curvature of any point on a center line 30 between the two, resilient belt plates 7.

A curvature of each of the curved lines 31 and 32 is the same as that of a circle as viewed from above the main 7 J s

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n I! ii: _I tj O body 1 and the lid 3.

When the lid 3 is opened, the bottom sides 7a of the resilient belt plates 7 are expanded upwardly to form arcular shapes.

An example of operation of this preferred embodiment will be described referring to At first, under the closed condition of the lid, the cross-sectional shape of the plates crossing at a right angle with the resilient belt plates 7 draws an inverted truncated V-shape. Due to this fact, as viewed from the side of each ee.. of the resilient belt plates 7, the thin-walled hinge 11 is *1 seemed to cross with a horizontal line A 1 B at an angle P *O4 as shown in From this state, at first when the lid 3 is pivoted on 15 a crossing point 01 between the top side 7b and the upper 094:. thin-walled hinge (the upper slant side) 7c a crossing point AI between the bottom side 7a of the resilient belt plate 7 and the upper slant sides 7c is moved on an arcular

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f t 0 path S, with its radius being a distance R 1 m x sin 8 x cos P (where, m is a length as viewed from the upper surface of the hinge) between 0 1 A, as viewed from a side around a point 01.

To the contrary, when the lid 3 is pivoted on a crossing point 03 between the bottom side 7a and the lower :6'2"i5 thin walled hinge (the lower slant side) 7d, the crossing point AI between the bottom side 7a and the upper slant side 7c of the resilient belt plate 7 is moved on an arc S 2 with a radius having a length R 2 of the bottom side 7a.

Due to this fact, the resilient belt plate 7, in particular, its bottom side 7a is resiliently extended from the point A, up to an intermediate point P 1 applying the maximum spacing distance C between each of the arcs S i and S 2 oand when it exceeds this intermediate point P 1 it may St r' resiliently be recovered. With such an arrangement, the primary reversing is completed.

Then when the lid 3 is pivoted on a crossing point 02 between the top side 7b and the lower thin-walled hinge (a lower slant side) 7d the crossing point Al between the bottom side 7a and the upper slant side 7c of the resilient belt plate 7 is moved on an arc S 3 having a center of 02 and a radius of a distance R 3 m x sin 6 x cos a between Q 2 and A 1 as viewed from the side thereof with 02 being applied as a 10 center.

ee** To the contrary, when the lid 3 is pivoted on the *0 crossing point 03 between the bottom side 7a and the lower thin-walled hinge (the lower slant side) 7d the crossing point A. between the bottom side 7a and the upper slant side 15 7c of the resilient belt plate 7 is moved on an arc S2 with a radius having a length R 2 of the bottom side 7a.

a s Due to this fact, the resilient belt plate 7, in particular its bottomsides 7a are resiliently expanded from the point Al to the intermediate point P 2 applying the maximum 20 spacing distance D between each of the arcs S 3 and S 2 and as it exceeds the intermediate po;lnt P 2 subsequently it is resiliently recovered to form an upward arc S connepting the points 03 and A 3 and then the secondary reversing is completed. As a result, the cross-sectional shape crossing 25 at a right angle with the reoilient belt plates 7 becomes a truncated V-Ohape.

A pri zqy reg;pi 'saI ind a centre of 0O and a secpodat reversing around a center 02 are normally performed Scontinuously with an integral operation. Provided that it is also possible to keep the lid in its half-opened state under a state of the primary reversing operation.

In the preferred embodiment, the bottom side 7a of the resilient belt plate 7 is formed arcularly to expand upwardly then the lid 3 is opened, so that an allowance of a resilient 9 i 4 O extension of the bottom side 7a is increased. Therefore even if an excessive tension force is applied to the thin-walled hinges 10 and 11 at both ends of the resilient belt plates, these thin-walled hinges 10 and 11 are never torn off.

The bottom side 7a of the resilient belt plate 7 is formed to be expanded upwardly when the lid 3 is opened, and a crossing point A 4 at the forward side of the arcs S3 and S 4 is positioned more forwardly than a base end point 03 of the bottom sides 7a of the resilient belt plates 7 as shown viewed from the side, it may fulfil a relation of <A 4 03, 02 Se.* <02, 03, A 3 >45 0 With such an arrangement, the upper end Al of the bottom side 7a of the resilient belt plate is further apt to move up to a position of the point A 4 with a resilient retaining strength returning to an arc form under a 15 state of the closed lid, so that a certain force may act in such a direction as one to close the lid 3 and the closed state of the lid can be positively maintained.

(Second Preferred Embodiment) As shown in Figs.6 and 7, this second preferred 0 embodiment is constructed such that the resilient belt plates 7 may keep their flat plate states when the lid 3 is opened.

As shown in Fig.8, an extension line El of the lower thin-walled hinge 10 of one reitlient belt plate 7 is crossed with an another extension line E 2 of the lower thin-walled hinge 10 of th4 other resilient belt plate 7 over a center line 30 between each of the resilient belt plates 7 and over an interface line 35 between the main body 1 and the lid 3 and at the same time at this crossing point, an extension line E 3 of the upper thin-walled hinge 11 of one resilient belt plate 7 is crossed with an other extension line E 4 -f the upper thin-walled hinge 11 of the other resilient belt plate 7.

A lid opening operation in this preferred embodiment will be described in reference to Fig.9, wherein at first A-1

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67-Irw ~o 7 (cP. Representative Director This form may be completed and filed after the filing of a :atent a plication but the form must not *be signed until ifter it has been completely filled in as indicated by the marginal rotes. The place and date of signing must be filled in. Corpany stamps or seals should not be used.

No legalisation is necessary.

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SO when the lid 3 is pivoted on a crossing point 01 between the top side 7b and the upper thin-walled hinge (an upper slant side) 7c, a crossing point A 1 between the bottom sides 7a of the resilient belt plate 7 and the upper slant sides 7c is moved on an arc S 1 with a radius of a distance R, between 01 and S1 as viewed from a side while the point 01 being a center when the lid 3 is pivoted.

To the contrary, when the lid 3 is pivoted on a crossing point 03 between the bottom side 7a and the lower thin-walled hinge (a lower slant side) 7d, the crossing point A, between the bottom side 7a and the upper slant side 7c of the resilient belt plate 7 is moved on an arc S 2 with a radius having a length R 2 of the bottom side 7a.

Due to this fact, the resilient belt plate 7, in particular, its bottom side 7a resiliently extends from the point A, up to the intermediate point P I applying the maximum spacing distance C between each of the arcs S 1 and S2 and as it exceeds this intermediate point it is apt to resiliently recover up to the point A 2 With such an 0 arrangement, the primary reversing operation is completed.

Then, when the lid 3 is pivoted on a crossing point 02 between the top side 7b and the lower thin-walled hinge (a lower slant side) 7d the crossing point A 1 between the bottom side 7a and the upper slant side 7c of the resilient belt plate 7 is moved over an arc S 3 with a radius of a distance

R

3 between 02 and Al.

To the contrary, when the lid 3 is pivoted on the crossing point 03 between the bottom sidi.le 7a and the lower thin-walled hinge (a lowerslant side) 7d, the crossing point A. between the bottom side 7a and the upper slant side 7c of the r~tilient belt plate 7 is movid on the krc S2 with a Due to this fact, the resilient belt plate 7, irt particular, its bottom side 7a is resiliently extended from upper ae an connciQU P co r-e through another thin-wall.ed hinge, 0 the point A 1 up to the intermediate point P 2 applying the maximum spacing distance D between each of the arcs S 3 and S 2 and when it exceeds this intermediate point P 2 it is resiliently recovered after it and then the secondary reversing operation is completed. As a result, a crosssectional shape crossing at a right angle with the resilient belt plate 7 becomes a truncated V-shape.

(Third P.aferred Embodiment) As shown in Fig.10, this preferred embodiment is made such that an extension line El of the lower thin-walled hinge 10 of one of the resilient belt plates 7 is crossed with another extension line E 2 of the lower thin-walled hinge of the other resilient belt plate 7 over a center line between each of the resilient belt plates 7 and at the same 0 15 time this crossing point is positioned lower than an interfac line 35 between the main body 1 and the lid 3, and an extension line E 3 of the upper thin-walled hinge 11 of one of the resilient belt plates 7 is crossed with another extension line E4 of the upper thin-walled hinge 11 of the *20 other resilient belt plate 7 over the center line 30 between each of the resilient belt plates 7 and at the same tme this crossing point is positioned upper than the interface line between the main body 1 and the lid 3.

Each of the crossing points C. and C 2 is placed at an equal distance from the interface line 35 between the main Sbody 1 and the lid 3, and the resilient belt plates 7 gtre symmetrically arranged around the interface line 35 between the main body 1 and the lid 3.

A plane 36 including thin-walled hinge~ 10 and 11 for connecting each of the resilient belt plates 7 to the main body 1 and the lid 3 is formed at the rear surfaces of the main body 1 and the lid 3.

In this preferred embodiment, when the lid 3 io opened as-shown 12 i ae /1 i% in Fig.6, a distance between the lid 3 and the main body 1 is made large, so that a machining of a molding die is facilitated.

Since the thin-walled hinges 10 and 11 are included in the plane 36, it becomes easy to design the die in view of this fact.

(Fourth Preferred Embodiment) Figs.11 to 13 illustrate a cap in which the main body 1 is threadably engaged with an opening neck ia of a container at its inner surface.

There are provided at least a pair of resilient belt plates 7 and for connecting the rear side surface of the main body *0 1 and the lid 3 to each other in the same manner as that of the first preferred embodiment and they are stored in the grooves 8 S and 9 in the same manner as that of the first preferred embodiment.

Each of the lower ends of the resilient belt plates 7 a-d 7 is connected to the lower ends of the grooves 8 and 9 through the thin-walled hinges 10 -ed and each of the hpper ends of the 00 9 resilient belt plates 7 and 7 is coiinected to the thin-walled hinges 11 and 1- at the upper ends of the grooves 8 and 9.

The third resilient plate 37 is arranged betwee, one resilient belt plate 7 and the other resilient belt plate 7 so as to connect the rear surfaces of the main body 1 and the lid 3.

The third resilient plate 37 has basically a rectangular form and the rear surfaces of the main body 1 and the lid 3 are connected through the thin-walled hinges 10 and 11. However, since an intermediate part of the hinge is cut, this becomes an H-shape as shown In Fig.ll. L The resilient belt plates 7 and 4 are curved upwardly while 13 i i i- ii: :I i u-- 4 r i.-I .x i I the \lid i s bcing opened., ,The grooves 8 and 9 corresponding to the third resilient belt platte 37 may be eliminated.

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Claims (1)

15. trapezoid having a bottom side and a top side parallel to each other and a pair of slant sides each connecting an end of the bottom side and an end of the top side, the top sides of the resilient belt plates being oppositely faced to each other, one slant side of each of the resilient belt a plates being a lower side and connected to the rear surface of said main body through a thin-walled hinge and the other i i• slant side of each of the resilient belt plates being an upper side and connected to the rear surface of the lid through another thin-walled hinge, each of the resilient plates being connected to the rear surface of the main, body and the rear surface of the *lid having a circular cross-section to cause a cross- section crossing at a right angle with the resilient belt plates to draw an inverted truncated V-shape in the closed position of the lid, and each of the resilient belt plates primarily rotating as the lid pivots around the upper thin-walled hinge when the lid is opened or closed and secondarily reversed when each of the resilient belt plates is pivoted around the lower thin-walled hinge to cause the cross- sectional shape of the resilient belt plates to adopt a truncated V-shape in the open position of the lid, ig I' Q 7 i F -16 2. The lid member for a container opening according to Claim 1 in which both ends of the lower thin-walled hinges of each of the resilient belt plates are placed on a curved line the curvature of which is directed in one direction with a center of curvature on the center line between the two resilient belt plates as viewed from the rear surfaces of said main body and the lid, and both ends of the upper thin-walled hinges are formed to be placed on a curved line the curvature of which is directed in an opposite direction and also with a center of curvature on a center line between the two resilient belt plates. 3. The lid member for a container opening according to Claim 2 in which said main body and the lid are of a ~circular shape as viewed from their upper sides and a S 15 curvature of each of said curved lines is the same as that of the circular shape. 4. The lid member for a container opening according to Claim 1 in which said main body is a cap main body to be fixed to an opening neck of the container. 20 5. The lid member for a container opening according to Claim 1 in which said main body is a container and said opening is an opening of said container. 6. The lid member for a container opening according to Claim 1 in which the bottom sides of said resilient belt plates are formed to move upwardly when said lid is opening. 7. The lid member for a container opening according to w ulalm I in which the resilient Llt plates are formed to keep a flat plate state when said lid is opening. 8. The lid member for a container opening according to Claim 1 in which an extension line of the lower thin-walled hinge of said one resilient belt plate is crossed with an extension line of lower thin-walled hinge of the other tle. resilient belt plate over center line between each of the resilient belt plates and at the same time an extension line *^e ofA-a. upper thin-walled hinge of said one resilient belt plate is crossed with,-a, extension line of an upper thin- walled hinge of the other resilient belt plate over the center line between each of the resilient belt plates. 00 9. The lid member for a container opening according to S. Claim 1 in which an extension line of the lower thin-walled hinge of said one resilient belt plates is crossed with an extension line of the lower thin-walled hinge of the other resilient belt plates over- center line between each of the resilient belt plates and over an interface line between the main body and the lid, and an extension line of the upper thin-walled hinge of said one resilient belt plate and an extension line of the lower thin-walled hinge of the other resilient belt plate are crossed to each other at this S crossing point. 0 The lid member for a container opening according to Claim 1 ti which an extension line of the lower thin-walled "hinge of said one resilient belt plate is crossed at a first crossing point with an extension line of the lower thin- walled hinge of the other resilient belt plate over the center line between each of the resilient belt plates, the first crossing point being placed lower than the interface line between the main body and the lid, and in which CJT FLI(17 0 U sm 'r 1 0 an extension line of the upper thin-walled hinge of said one resilient belt plate is crossed at a second crossing point with an extension line of the upper thin-walled hinge of the other resilient belt plate over the center line between each of the resilient belt plates, and the second crossing point is placed higher than the interface line between the main body and the lid. 11. The lid member for a container opening according to Claim 1 in which an extension line of the lower thin-walled hinge of said one resilient belt plate is crossed at a first crossing point with an extension line of the lower thin- walled hinge of the other resilient belt plate over the center line between each of the resilient belt plates, and the first crossing point is placed lower than the interface line between the main body and the lid, an extension line of the upper thin-walled hinge of said one resilient belt plate is crossed at a second crossing point with an extension line of the upper thin-walled hinge j* of the other resilient belt plate over the center line between each of the resilient belt plates, and each of the first and second crossing points is equally spaced apart from the interface line between the main body and the lid. S 12. The lid member for a container opening according to 0 Claim 1, further comprising a third resilient plate placed between said one resilient belt plate and the other resilient belt plate, wherein the third resilient plate is of rectangular shape, and the rear surfaces of said main body and lid are connected to each other through the thin-walled hinges. 13. The lid member for a container opening according to Claim 1 in which a plane including the thin thin-walled 18 Q I 02 .1 'I I <I f- hinges connecting each of said resilient belt plates to the main body and the lid is formed at the rear surfaces of said main body and the lid. Dated this 10th day of June 1992. YOSHINO KOGYOSHO CO., LTD. By Its Patent Attorneys: GRIFFITH HACK CO. Fellows Institute of Patent Attorney',S of Australia. 0S S0*9 *Go*S 1,66. .00 n