CA2037417C - Cap closing member for container opening - Google Patents
Cap closing member for container opening Download PDFInfo
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- CA2037417C CA2037417C CA 2037417 CA2037417A CA2037417C CA 2037417 C CA2037417 C CA 2037417C CA 2037417 CA2037417 CA 2037417 CA 2037417 A CA2037417 A CA 2037417A CA 2037417 C CA2037417 C CA 2037417C
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- resilient belt
- lid
- main body
- resilient
- belt plates
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Abstract
Disclosed is a lid closing member for a container opening. The lid closing member is made such that rear surf aces of a main body (1) and a lid (3) having the same cross-sectional shape as the main body are connected to each other by two resilient belt plates (7, 7), i.e. hinge parts.
Each of the resilient belt plates (7, 7) forms a trapezoid, its top sides (7b, 7b) being oppositely faced to each other and connected to the rear surface of lid (3). Each of the resilient belt plates (7, 7) is connected to the rear surface of the main body (1) having a circular cross-section and a rear side surface of the lid (3) having a circular cross-section, thereby the sectional shape crossing at a right angle with the resilient belt plates (7, 7) may form an inverted truncated V-shape. In this way, it is possible to prevent the hinge parts from projecting rearwardly.
Each of the resilient belt plates (7, 7) forms a trapezoid, its top sides (7b, 7b) being oppositely faced to each other and connected to the rear surface of lid (3). Each of the resilient belt plates (7, 7) is connected to the rear surface of the main body (1) having a circular cross-section and a rear side surface of the lid (3) having a circular cross-section, thereby the sectional shape crossing at a right angle with the resilient belt plates (7, 7) may form an inverted truncated V-shape. In this way, it is possible to prevent the hinge parts from projecting rearwardly.
Description
i 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.
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 mounted on the upper surface of the cap to close a pouring port formed in the upper surface of the cap are connected by a pair of first right and left hinges properly spaced apart.
A lower end of an inverted 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 through the third hinge.
In addition to the foregoing prior art, there is Japanese Utility Model Publication No. Sho Ol-176055 filed in Japan by the present applicant.
This utility model publication describes that a circular container and a similar circular lid for closing the upper surface of the container in such a way as it may i. ., be opened or closed are connected to each other by the first resilient connector plate through a thin-walled hinge.
At both right and left sides of the first resilient plate, their lower ends are connected to an outer surface of the container and their upper ends are connected to an outer surface of 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 from a truncated V-shape in cross-section and in turn when the lid is released to open, the resilient connector plates are resiliently repelled from their truncated V-shape in cross-section to an inverted truncated V-shape as viewed from a rear side thereof.
In case of the prior art cap provided with a lid of a three-point hinge mechanism, its outer appearance is deteriorated due to the fact that its inverted 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 into the cap. The lid has slits which are formed in 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 i ' CA 02037417 2002-05-27 closing operation 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 a 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 lid closing member for the container opening of the present invention is comprised of a main body (1) having a circular cross-section with a pouring port (2) at its upper surface, a lid (3) for closing the pouring port (2) and having the same cross-sectional shape as that of the main body (1) mounted on the upper surface of the main body (1), and at least two resilient belt plates (7, 7) for use in connecting rear side surfaces of the main body (1) and the lid member (3) to each other.
In this case, each of the resilient belt plates (7, 7) forms a trapezoid having a bottom side (7a) and a top side (7b) which are parallel to each other, and a pair of slant sides (7c, 7d) connecting both ends of the bottom side (7a) with both ends of the top side (7b), respectively.
Each of the resilient belt plates (7, 7) is connected to a rear side surface of the lid member (3) while its top sides (7b, 7b) being oppositely faced to each other.
In this case, one slant side (7d) of each of the resilient belt plates (7, 7) is low and connected to a rear surface of the main body (1) through a thin thickness flange (10), and the other slant side (7c) of each of the resilient belt i i plates (7, 7) is high and connected to the rear side surface of the lid (3) through a thin-walled hinge (11).
Each of the resilient belt plates (7, 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, resulting in producing a relation in which a cross-sectional shape crossing at a right angle with the resilient belt plates (7, 7) may show an inverted truncated V-shape.
In case of opening or closing the lid (3), each of the resilient belt plates (7, 7) may be primarily reversed as the lid (3) is pivoted around a center of the upper thin-walled hinge (11) and secondarily reversed as each of the resilient belt plates (7, 7) is pivoted around a center of the lower thin-walled hinge (10), resulting in that a sectional shape crossing at a right angle with the resilient belt plates (7, 7) shows an inverted truncated V-shape.
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 three-point hinge mechanism.
Brief Description of the Drawings Figs. 1 to 5 illustrate a first preferred embodiment.
Fig. 1 is a top plan view for showing a lid closing member of the first preferred embodiment.
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.
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 mounted on the upper surface of the cap to close a pouring port formed in the upper surface of the cap are connected by a pair of first right and left hinges properly spaced apart.
A lower end of an inverted 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 through the third hinge.
In addition to the foregoing prior art, there is Japanese Utility Model Publication No. Sho Ol-176055 filed in Japan by the present applicant.
This utility model publication describes that a circular container and a similar circular lid for closing the upper surface of the container in such a way as it may i. ., be opened or closed are connected to each other by the first resilient connector plate through a thin-walled hinge.
At both right and left sides of the first resilient plate, their lower ends are connected to an outer surface of the container and their upper ends are connected to an outer surface of 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 from a truncated V-shape in cross-section and in turn when the lid is released to open, the resilient connector plates are resiliently repelled from their truncated V-shape in cross-section to an inverted truncated V-shape as viewed from a rear side thereof.
In case of the prior art cap provided with a lid of a three-point hinge mechanism, its outer appearance is deteriorated due to the fact that its inverted 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 into the cap. The lid has slits which are formed in 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 i ' CA 02037417 2002-05-27 closing operation 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 a 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 lid closing member for the container opening of the present invention is comprised of a main body (1) having a circular cross-section with a pouring port (2) at its upper surface, a lid (3) for closing the pouring port (2) and having the same cross-sectional shape as that of the main body (1) mounted on the upper surface of the main body (1), and at least two resilient belt plates (7, 7) for use in connecting rear side surfaces of the main body (1) and the lid member (3) to each other.
In this case, each of the resilient belt plates (7, 7) forms a trapezoid having a bottom side (7a) and a top side (7b) which are parallel to each other, and a pair of slant sides (7c, 7d) connecting both ends of the bottom side (7a) with both ends of the top side (7b), respectively.
Each of the resilient belt plates (7, 7) is connected to a rear side surface of the lid member (3) while its top sides (7b, 7b) being oppositely faced to each other.
In this case, one slant side (7d) of each of the resilient belt plates (7, 7) is low and connected to a rear surface of the main body (1) through a thin thickness flange (10), and the other slant side (7c) of each of the resilient belt i i plates (7, 7) is high and connected to the rear side surface of the lid (3) through a thin-walled hinge (11).
Each of the resilient belt plates (7, 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, resulting in producing a relation in which a cross-sectional shape crossing at a right angle with the resilient belt plates (7, 7) may show an inverted truncated V-shape.
In case of opening or closing the lid (3), each of the resilient belt plates (7, 7) may be primarily reversed as the lid (3) is pivoted around a center of the upper thin-walled hinge (11) and secondarily reversed as each of the resilient belt plates (7, 7) is pivoted around a center of the lower thin-walled hinge (10), resulting in that a sectional shape crossing at a right angle with the resilient belt plates (7, 7) shows an inverted truncated V-shape.
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 three-point hinge mechanism.
Brief Description of the Drawings Figs. 1 to 5 illustrate a first preferred embodiment.
Fig. 1 is a top plan view for showing a lid closing member of the first preferred embodiment.
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' i: ,./ ~T ~ ~~ /~ r ~. .. . '~. ~.. a Fig.2 is a side elevational view of Fig. 1.
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.
Fig.5 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 closing of a lid under a resilient reversing of each of the resilient belt plates.
Fig.lO is a rear view for showing the third preferred embodiment.
Figs.ll to 13 show the fourth preferred embodiment.
Fig.ll is a top plan view of the fourth preferred embodiment.
Fig. l2 is a side elevational view of Fig.ll.
Fig. l3 is a rear view with the resilient belt plates being broken away.
Description of the Preferred Embodiments Referring now to the drawings, same 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: ,./ ~T ~ ~~ /~ r ~. .. . '~. ~.. a Fig.2 is a side elevational view of Fig. 1.
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.
Fig.5 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 closing of a lid under a resilient reversing of each of the resilient belt plates.
Fig.lO is a rear view for showing the third preferred embodiment.
Figs.ll to 13 show the fourth preferred embodiment.
Fig.ll is a top plan view of the fourth preferred embodiment.
Fig. l2 is a side elevational view of Fig.ll.
Fig. l3 is a rear view with the resilient belt plates being broken away.
Description of the Preferred Embodiments Referring now to the drawings, same 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.
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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 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 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 upper 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 i belt plates 7 and 7 are stored within each of the grooves 8 and 9.
In this case, each of the resilient belt plates 7 and 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, each connecting an end of the bottom side 7a and an end of the top side 7b.
The resilient belt plates 7 and 7 are 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. In this case, one slant side 7d of each of the resilient belt plates 7 and 7 is low and connected to the rear surface of the main body 1 through the thin-walled hinge 10, the other slant side 7c of each of the resilient belt plates 7 and 7 is high and connected to the rear surface of the lid 3 through the thin-walled hinge 11.
Each of the resilient belt plates 7 and 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 cross-sectional shape of it crossing at a right angle with the resilient belt plates 7 and 7 forms an inverted truncated V-shape.
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 and 10 at the lower side of each of the resilient belt plates 7 and 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 and 7. Both ends of the upper thin-walled hinges i 11, 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 and 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 body 1 and the lid 3.
When the lid 3 is opened, the bottom sides 7a of the resilient belt plates 7 and 7 are expanded upwardly to form arcular shapes.
An example of operation of this preferred embodiment will be described.
At first, under the closed condition of the lid, its cross-sectional shape crossing at a right angle with the resilient belt plates 7 and 7 draws an inverted truncated V-shape. Due to this fact, as viewed from the side of each of the resilient belt plates 7 and 7, the thin-walled hinges 10 and 10 are seemed to cross with the top side 7b at an angle as shown in Fig. 5.
From this state, at first if it is assumed that a crossing point O1 between the top side 7b and the upper thin-walled hinge (the upper slant side) 7c, as the lid 3 is pivoted, the crossing point A1 between the bottom sides 7a of the resilient belt plates 7 and 7 and the upper slant sides 7c is moved on an arcular path S1 with its radius being a distance R1 = m x sin 8 x cos R (where, m is a length as viewed from the upper surface of the hinge) between OlAl as viewed from a side around a point O1.
_g_ ,. "~ :-'~ i~ r;. .
Due to this fact, the resilient belt plate 7, in particular, its bottom side 7a is resiliently extended from the point A1 up to an intermediate point P1 applying the maximum spacing distance C between each of the arcs S1 and S2 and when it exceeds this intermediate point Pl, it may resiliently be recovered. With such an arrangement, the primary reversing is completed.
- Then if it is assumed -that a crossing point 02 between the top side 7b and the lower thin-walled hinge (a lower slant side) 7d is a center, a crossing point A1 between the bottom side 7a and the upper slant side 7c of the resilient belt plate 7is moved on an arc S3 having a center of 02 and a radius of a distance radius R3 = m x sin B x cos a between Q2 and A1 as viewed from the side thereof with 02 being applied as a center.
To the contrary, if it is assumed that a crossing point 03 between the bottom side 7a and the lower thin-walled hinge the lower slant side) 7d is applied as a center, a crossing point A1 between the bottom side 7a and the upper slant side 7c of the resilient belt plate 7 is moved on an arc SZ with a length R2 of the bottom side 7a being a radius.
Due to this fact, the resilient belt plate 7, in particular its bottom sides 7a are resiliently expanded from the point A1 to the intermediate point P2 applying the maximum spacing distance D between each of the arcs S3 and S2 and as it exceeds the intermediate point P~, subsequently it is resiliently recovered to form an upward arc S connecting the points 03 and A3 and then the secondary reversing is completed. As a result, the _g_ -; ~. '' cross-sectional shape crossing at a right angle with the resilient belt plates 7 and 7 becomes an inverted ~~-shape.
A primary reversing around a center of O1 and a secondary reversing around a center 02 are normally performed continuously 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 when the lid 3 is opened, so that an allowance of a resilient extension of the bottom side 7a is increased, an excessive tension force is applied to the thin-walled hinges 10 and 11 at both ends of the resilient belt plates so as to enable these thin-walled hinges and 11 from being torned 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 A4 at the forward side of the arcs S3 and S4 is positioned more forwardly than a base end point 03 of the bottom sides 7a of the resilient belt plates 7 and 7 (i.e. as viewed from the side, it may fulfill a relation of L A4,03, 02 -With such an arrangement, the upper end A1 of the bottom side 7a of the resilient belt plate is further apt to move up to a position of the point A4 with a resilient retaining strength returning to an arc form under a 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) ;_ , '_ ,_' ,.-, , , ~a ..
As shown in Figs.6 and 7, this second preferred embodiment is constructed such that the resilient belt plates 7 and 7 may keep their flat plate states when the lid 3 is opened.
As shown in Fig.8, an extension line of the lower thin-walled hinge 10 of one resilient belt plate 7 is crossed with an another extension line of the lower thin-walled hinge 10 of the other resilient belt plate 7 over a center line 30 between each of the resilient belt plates 7 and 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 of the thin-walled hinge 11 over one resilient belt plate 7 is crossed with another lower extension line 10 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 if it is assumed that a crossing point O1 between the top side 7b and the upper thin-walled hinge (an upper slant side) 7c is applied as a center, a crossing point A1 between the bottom sides 7a of the resilient belt plates 7 and 7 and the upper slant sides 7c is moved on an arc A1 with a radius of a distance R1 between O1 and A1 as viewed from a side while the point O1 being a center when the lid 3 is pivoted.
To the contrary, if it is assumed that a crossing point 03 between the bottom side 7a and the lower thin-walled hinge (a lower slant side) 7d is applied as a center, the crossing point A1 between the bottom side 7a and the upper slant side 7c of the resilient belt plate 7 is moved on an arc S2 with a length R3 of the bottom side 7a being a radius.
Due to this fact, the resilient belt plate 7, in particular, its bottom side 7a resiliently extends from the point A1 up to the intermediate point P1 applying the maximum spacing distance C between each of the arcs S1 and S2 and as it exceeds this intermediate point P1, it is apt to resiliently recover up to the point A2. With such an arrangement, the primary reversing operation is completed.
Then, if it is assumed that a crossing point 02 between the top side 7b and the lower thin-walled hinge (a lower slant side) 7d is applied as a center, a crossing point A1 between the bottom side 7a and the upper slant side 7c of the resilient belt plate 7 is moved over an arc S3 with a distance radius R3 between 02 and A1 as viewed from the side around the point 02 being a radius when the lid 3 is pivoted.
To the contrary, if it is assumed that the crossing point 03 between the bottom side 7a and the lower thin-walled hinge (a lower slant side) 7d is applied as a center, the cross9_ng point A1 between the bottom side ?a and the upper slant side 7c of the resilient belt plate 7 is moved on the arc S2 with a length R2 of the bottom side 7a being a radius.
Due to this fact, the resilient belt plate 7, in particular, its bottom side 7a is resiliently extended from the point A1 up to the intermediate point P2 applying the maximum spacing distance D between each of the arcs S3 and S2 and if it exceeds this intermediate point P2, it is resiliently recovered after it and then the secondary reversing operation is completed. As a result, a cross-sectional shape crossing at a right angle with the resilient belt plates 7 and 7 becomes an inverted/1-shape.
(Third Preferred Embodiment) As shown in Fig.lO, this preferred embodiment is made such that an extension line of the lower thin-walled hinge 10 of one of the resilient belt plates 7 and 7 is crossed with another extension line of the lower thin-walled hinge 10 of the other resilient belt plates 7 and 7 over a center line 30 between each of the resilient belt plates 7 and 7 and at the same time this crossing point is positioned lower than an interface line 35 between the main body 1 and the lid 3, and an extension line of the upper thin-walled hinge 11 of one of the resilient belt plates 7 and 7 is crossed with another extension line of the upper thin-walled hinge 11 of the other resilient belt plates 7 and 7 over the center line 30 between each of the resilient belt plates 7 and 7 and at the same time this crossing point is p7.aced over the interface line 35 between the main body 1 and the lid 3.
Each of the crossing points is placed at an equal distance from the interface line 35 between the main body 1 and the lid 3, and the resilient belt plates 7 and 7 are symmetrically arranged around the interface line 35 between the main body 1 and the lid 3.
A plane 36 including thin-walled hinges 10 and 11 for connecting each of the resilient belt plates 7 and 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 is opened as shown f. .
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.ll to 13 illustrate a cap in which the main body 1 is threadably engaged with an opening neck la of a container at its inner surface.
There are provided at least a pair of resilient belt plates 7 and 7 for connecting the rear side surface of the main body 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 and 9 in the same manner as that of the first preferred embodiment.
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 thin-walled hinges 11 and 11 at the upper ends of the grooves 8 and 9.
The third resilient plate 37 is arranged between 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.
The resilient belt plates 7 and 7 are curved upwardly while ..i ~I i~ r;~~.~. ~.,', ~ I
the lid is being opened.
The grooves 8 and 9 corresponding to the third resilient belt plate 37 may be eliminated.
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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 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 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 upper 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 i belt plates 7 and 7 are stored within each of the grooves 8 and 9.
In this case, each of the resilient belt plates 7 and 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, each connecting an end of the bottom side 7a and an end of the top side 7b.
The resilient belt plates 7 and 7 are 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. In this case, one slant side 7d of each of the resilient belt plates 7 and 7 is low and connected to the rear surface of the main body 1 through the thin-walled hinge 10, the other slant side 7c of each of the resilient belt plates 7 and 7 is high and connected to the rear surface of the lid 3 through the thin-walled hinge 11.
Each of the resilient belt plates 7 and 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 cross-sectional shape of it crossing at a right angle with the resilient belt plates 7 and 7 forms an inverted truncated V-shape.
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 and 10 at the lower side of each of the resilient belt plates 7 and 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 and 7. Both ends of the upper thin-walled hinges i 11, 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 and 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 body 1 and the lid 3.
When the lid 3 is opened, the bottom sides 7a of the resilient belt plates 7 and 7 are expanded upwardly to form arcular shapes.
An example of operation of this preferred embodiment will be described.
At first, under the closed condition of the lid, its cross-sectional shape crossing at a right angle with the resilient belt plates 7 and 7 draws an inverted truncated V-shape. Due to this fact, as viewed from the side of each of the resilient belt plates 7 and 7, the thin-walled hinges 10 and 10 are seemed to cross with the top side 7b at an angle as shown in Fig. 5.
From this state, at first if it is assumed that a crossing point O1 between the top side 7b and the upper thin-walled hinge (the upper slant side) 7c, as the lid 3 is pivoted, the crossing point A1 between the bottom sides 7a of the resilient belt plates 7 and 7 and the upper slant sides 7c is moved on an arcular path S1 with its radius being a distance R1 = m x sin 8 x cos R (where, m is a length as viewed from the upper surface of the hinge) between OlAl as viewed from a side around a point O1.
_g_ ,. "~ :-'~ i~ r;. .
Due to this fact, the resilient belt plate 7, in particular, its bottom side 7a is resiliently extended from the point A1 up to an intermediate point P1 applying the maximum spacing distance C between each of the arcs S1 and S2 and when it exceeds this intermediate point Pl, it may resiliently be recovered. With such an arrangement, the primary reversing is completed.
- Then if it is assumed -that a crossing point 02 between the top side 7b and the lower thin-walled hinge (a lower slant side) 7d is a center, a crossing point A1 between the bottom side 7a and the upper slant side 7c of the resilient belt plate 7is moved on an arc S3 having a center of 02 and a radius of a distance radius R3 = m x sin B x cos a between Q2 and A1 as viewed from the side thereof with 02 being applied as a center.
To the contrary, if it is assumed that a crossing point 03 between the bottom side 7a and the lower thin-walled hinge the lower slant side) 7d is applied as a center, a crossing point A1 between the bottom side 7a and the upper slant side 7c of the resilient belt plate 7 is moved on an arc SZ with a length R2 of the bottom side 7a being a radius.
Due to this fact, the resilient belt plate 7, in particular its bottom sides 7a are resiliently expanded from the point A1 to the intermediate point P2 applying the maximum spacing distance D between each of the arcs S3 and S2 and as it exceeds the intermediate point P~, subsequently it is resiliently recovered to form an upward arc S connecting the points 03 and A3 and then the secondary reversing is completed. As a result, the _g_ -; ~. '' cross-sectional shape crossing at a right angle with the resilient belt plates 7 and 7 becomes an inverted ~~-shape.
A primary reversing around a center of O1 and a secondary reversing around a center 02 are normally performed continuously 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 when the lid 3 is opened, so that an allowance of a resilient extension of the bottom side 7a is increased, an excessive tension force is applied to the thin-walled hinges 10 and 11 at both ends of the resilient belt plates so as to enable these thin-walled hinges and 11 from being torned 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 A4 at the forward side of the arcs S3 and S4 is positioned more forwardly than a base end point 03 of the bottom sides 7a of the resilient belt plates 7 and 7 (i.e. as viewed from the side, it may fulfill a relation of L A4,03, 02 -With such an arrangement, the upper end A1 of the bottom side 7a of the resilient belt plate is further apt to move up to a position of the point A4 with a resilient retaining strength returning to an arc form under a 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) ;_ , '_ ,_' ,.-, , , ~a ..
As shown in Figs.6 and 7, this second preferred embodiment is constructed such that the resilient belt plates 7 and 7 may keep their flat plate states when the lid 3 is opened.
As shown in Fig.8, an extension line of the lower thin-walled hinge 10 of one resilient belt plate 7 is crossed with an another extension line of the lower thin-walled hinge 10 of the other resilient belt plate 7 over a center line 30 between each of the resilient belt plates 7 and 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 of the thin-walled hinge 11 over one resilient belt plate 7 is crossed with another lower extension line 10 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 if it is assumed that a crossing point O1 between the top side 7b and the upper thin-walled hinge (an upper slant side) 7c is applied as a center, a crossing point A1 between the bottom sides 7a of the resilient belt plates 7 and 7 and the upper slant sides 7c is moved on an arc A1 with a radius of a distance R1 between O1 and A1 as viewed from a side while the point O1 being a center when the lid 3 is pivoted.
To the contrary, if it is assumed that a crossing point 03 between the bottom side 7a and the lower thin-walled hinge (a lower slant side) 7d is applied as a center, the crossing point A1 between the bottom side 7a and the upper slant side 7c of the resilient belt plate 7 is moved on an arc S2 with a length R3 of the bottom side 7a being a radius.
Due to this fact, the resilient belt plate 7, in particular, its bottom side 7a resiliently extends from the point A1 up to the intermediate point P1 applying the maximum spacing distance C between each of the arcs S1 and S2 and as it exceeds this intermediate point P1, it is apt to resiliently recover up to the point A2. With such an arrangement, the primary reversing operation is completed.
Then, if it is assumed that a crossing point 02 between the top side 7b and the lower thin-walled hinge (a lower slant side) 7d is applied as a center, a crossing point A1 between the bottom side 7a and the upper slant side 7c of the resilient belt plate 7 is moved over an arc S3 with a distance radius R3 between 02 and A1 as viewed from the side around the point 02 being a radius when the lid 3 is pivoted.
To the contrary, if it is assumed that the crossing point 03 between the bottom side 7a and the lower thin-walled hinge (a lower slant side) 7d is applied as a center, the cross9_ng point A1 between the bottom side ?a and the upper slant side 7c of the resilient belt plate 7 is moved on the arc S2 with a length R2 of the bottom side 7a being a radius.
Due to this fact, the resilient belt plate 7, in particular, its bottom side 7a is resiliently extended from the point A1 up to the intermediate point P2 applying the maximum spacing distance D between each of the arcs S3 and S2 and if it exceeds this intermediate point P2, it is resiliently recovered after it and then the secondary reversing operation is completed. As a result, a cross-sectional shape crossing at a right angle with the resilient belt plates 7 and 7 becomes an inverted/1-shape.
(Third Preferred Embodiment) As shown in Fig.lO, this preferred embodiment is made such that an extension line of the lower thin-walled hinge 10 of one of the resilient belt plates 7 and 7 is crossed with another extension line of the lower thin-walled hinge 10 of the other resilient belt plates 7 and 7 over a center line 30 between each of the resilient belt plates 7 and 7 and at the same time this crossing point is positioned lower than an interface line 35 between the main body 1 and the lid 3, and an extension line of the upper thin-walled hinge 11 of one of the resilient belt plates 7 and 7 is crossed with another extension line of the upper thin-walled hinge 11 of the other resilient belt plates 7 and 7 over the center line 30 between each of the resilient belt plates 7 and 7 and at the same time this crossing point is p7.aced over the interface line 35 between the main body 1 and the lid 3.
Each of the crossing points is placed at an equal distance from the interface line 35 between the main body 1 and the lid 3, and the resilient belt plates 7 and 7 are symmetrically arranged around the interface line 35 between the main body 1 and the lid 3.
A plane 36 including thin-walled hinges 10 and 11 for connecting each of the resilient belt plates 7 and 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 is opened as shown f. .
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.ll to 13 illustrate a cap in which the main body 1 is threadably engaged with an opening neck la of a container at its inner surface.
There are provided at least a pair of resilient belt plates 7 and 7 for connecting the rear side surface of the main body 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 and 9 in the same manner as that of the first preferred embodiment.
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 thin-walled hinges 11 and 11 at the upper ends of the grooves 8 and 9.
The third resilient plate 37 is arranged between 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.
The resilient belt plates 7 and 7 are curved upwardly while ..i ~I i~ r;~~.~. ~.,', ~ I
the lid is being opened.
The grooves 8 and 9 corresponding to the third resilient belt plate 37 may be eliminated.
Claims (13)
1. A lid member for a container opening comprising:
a main body of circular cross-section having an opening at its upper surface;
a lid having the same cross-sectional shape as that of the main body for closing the opening and mounted on the upper surface of the main body; and at least two resilient belt plates connecting rear surfaces of the main body and the lid to each other, wherein:
each of the resilient belt plates has a trapezoid shape 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 are oppositely faced to each other, one of the slant sides of each of the resilient belt plates is a lower side and connected to the rear surface of the main body through a lower thin-walled hinge and the other slant side of each of the resilient belt plates is an upper side and connected to the rear surface of the lid through an upper thin-walled hinge;
each of the resilient plates is connected to the rear surface of the main body having a circular cross-section 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 form an inverted truncated V-shape, and each of the resilient belt plates primarily rotates as a pivoting of the lid around the upper thin-walled hinge when the lid is opened or closed and secondarily reverses when each of the resilient belt plates is pivoted around the lower thin-walled hinge to cause a cross-sectional shape crossing at a right angle with the resilient belt plates becoming a truncated V-shape.
a main body of circular cross-section having an opening at its upper surface;
a lid having the same cross-sectional shape as that of the main body for closing the opening and mounted on the upper surface of the main body; and at least two resilient belt plates connecting rear surfaces of the main body and the lid to each other, wherein:
each of the resilient belt plates has a trapezoid shape 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 are oppositely faced to each other, one of the slant sides of each of the resilient belt plates is a lower side and connected to the rear surface of the main body through a lower thin-walled hinge and the other slant side of each of the resilient belt plates is an upper side and connected to the rear surface of the lid through an upper thin-walled hinge;
each of the resilient plates is connected to the rear surface of the main body having a circular cross-section 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 form an inverted truncated V-shape, and each of the resilient belt plates primarily rotates as a pivoting of the lid around the upper thin-walled hinge when the lid is opened or closed and secondarily reverses when each of the resilient belt plates is pivoted around the lower thin-walled hinge to cause a cross-sectional shape crossing at a right angle with the resilient belt plates becoming a truncated V-shape.
2. The lid member according to claim 1, in which both ends of the lower thin-walled hinge of each of the resilient belt plates are placed on a curved line drawn to expand upwardly with a center of curvature on a center line between the two resilient belt plates as viewed from rear surfaces of the main body and the lid, and both ends of the upper thin-walled hinges are formed to be placed on a line of a curved line drawn to expand downwardly with a center of curvature on a center line between the two resilient belt plates.
3. The lid member according to claim 2, in which the main body and the lid are of a circular shape as viewed from their upper sides and a curvature of each of the curved lines is the same as that of this circle.
4. The lid member according to claim 1, 2 or 3, in which the main body is a cap main body to be fixed to an opening neck of the container.
5. The lid member according to claim 1, 2 or 3, in which the main body is a container and the opening is an opening of the container.
6. The lid member according to any one of claims 1 to 5, in which the bottom sides of the resilient belt plates are formed to expand upwardly when the lid is opened.
7. The lid member according to any one of claims 1 to 6 in which the resilient belt plates are formed to keep a flat plate state when the lid is opened.
8. The lid member according to any one of claims 1 to 5, in which an extension line of the lower thin-walled hinge of one of the resilient belt plates crosses with an extension line of the lower thin-walled hinge of the other resilient belt plate over a center line between the resilient belt plates and at the same time, an extension line of the upper thin-walled hinge of the said one resilient belt plate crosses with an extension line of the upper thin-walled hinge of the other resilient belt plate over the center line between the resilient belt plates.
9. The lid member according to any one of claims 1 to 5, in which an extension line of the lower thin-walled hinge of one of the resilient belt plates crosses at a crossing point with an extension line of the lower thin-walled hinge of the other resilient belt plates over a center line between 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 the said one resilient belt plate and an extension line of the lower thin-walled hinge of the other resilient belt plate cross with each other at this crossing point.
10. The lid member according to any one of claims 1 to 5, in which:
an extension line of the lower thin-walled hinge of one of the resilient belt plates crosses at a crossing point with an extension line of the lower thin-walled hinge of the other resilient belt plate over a center line between the resilient belt plates, this crossing point is placed lower than an interface line between the main body and the lid, and an extension line of the upper thin-walled hinge of one of the resilient belt plates crosses at a crossing point with an extension line of the upper thin-walked hinge of the other resilient belt plate over a center line between the resilient belt plates, and this crossing point is placed higher than the interface line between the main body and the lid.
an extension line of the lower thin-walled hinge of one of the resilient belt plates crosses at a crossing point with an extension line of the lower thin-walled hinge of the other resilient belt plate over a center line between the resilient belt plates, this crossing point is placed lower than an interface line between the main body and the lid, and an extension line of the upper thin-walled hinge of one of the resilient belt plates crosses at a crossing point with an extension line of the upper thin-walked hinge of the other resilient belt plate over a center line between the resilient belt plates, and this crossing point is placed higher than the interface line between the main body and the lid.
11. The lid member according to any one of claims 1 to 5, in which:
an extension line of the lower thin-walled hinge of one of the resilient belt plates crosses at a crossing point with an extension line of the lower thin-walled hinge of the other resilient belt plate over a center line between the resilient belt plates, and this crossing point is placed lower than an interface line between the main body and the lid;
an extension line of the upper thin-walled hinge of the said one resilient belt plate crosses at a crossing point with an extension line of the upper thin-walled hinge of the other resilient belt plate over a center line between the resilient belt plates; and each of the crossing points is equally spaced apart from the interface line between the main body and the lid.
an extension line of the lower thin-walled hinge of one of the resilient belt plates crosses at a crossing point with an extension line of the lower thin-walled hinge of the other resilient belt plate over a center line between the resilient belt plates, and this crossing point is placed lower than an interface line between the main body and the lid;
an extension line of the upper thin-walled hinge of the said one resilient belt plate crosses at a crossing point with an extension line of the upper thin-walled hinge of the other resilient belt plate over a center line between the resilient belt plates; and each of the crossing points is equally spaced apart from the interface line between the main body and the lid.
12. The lid member according to any one of claims 1 to 11, in which a third resilient plate is placed between one of the resilient belt plates and the other resilient belt plate, this third resilient plate is of a rectangular shape, and the rear surfaces of the main body and lid are connected to each other through the thin-walled hinges.
13. The lid member according to any one of claims 1 to 12, in which a plane including the thin-walled hinges connecting the resilient belt plates to the main body and the lid is formed at the rear surfaces of the main body and the lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2037417 CA2037417C (en) | 1991-03-01 | 1991-03-01 | Cap closing member for container opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2037417 CA2037417C (en) | 1991-03-01 | 1991-03-01 | Cap closing member for container opening |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2037417A1 CA2037417A1 (en) | 1992-09-02 |
| CA2037417C true CA2037417C (en) | 2003-02-25 |
Family
ID=4147105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2037417 Expired - Lifetime CA2037417C (en) | 1991-03-01 | 1991-03-01 | Cap closing member for container opening |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2037417C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6988642B2 (en) | 2002-10-29 | 2006-01-24 | Johnson & Johnson Consumer Companies | Tamper-evident dispenser bottle |
-
1991
- 1991-03-01 CA CA 2037417 patent/CA2037417C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2037417A1 (en) | 1992-09-02 |
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| Date | Code | Title | Description |
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| EEER | Examination request | ||
| MKEX | Expiry |