RU2193000C1 - Protective cap - Google Patents

Abstract

FIELD: packing; sealing caps. SUBSTANCE: invention relates to sealing devices, mainly to caps of bottles preventing refilling of bottles. Proposed cap for bottle has bushing with means for fastening bushing on bottle neck, plug connected with upper part of bushing by easy-to-break connector. Body to pour liquid out of bottle is arranged in plug space being connected with plug by easy-to-detach connector. Pour-out body has outer and inner bushings and flexible member connected by ribs. Flexible member has base with through channel, projections over outer and inner contour of base forming space open from top. Flexible member tightly secured in bottle neck is sealed relative to pourout body. Inner bushing of pourout body is made with stopped upper and face and is located in open space of flexible member for enclosing by its lower part inner projection of flexible member forming clearance between base and walls of said ring space of flexible member. When pouring out liquid from bottle, liquid passes through channel of base, space of flexible member and further on between ribs of pourout body. If attempt is made to add liquid into bottle, liquid will fill open space of flexible member and owing to the fact that the latter is partitioned with clearance by lower end face of bushing with stopped end face, liquid in outer part of flexible member space will press on liquid in inner part of flexible member space. As space of bottle is closed by bushing with stopped end face, pressure is built in bottle preventing passage of liquid into bottle. EFFECT: increased reliability of device. 2 dwg

Description

 The invention relates to closure devices for containers for low-viscosity liquids, and in particular to designs of bottle caps that prevent re-filling of bottles with liquid during storage and transportation.

 A bottle closure is known, comprising a cylindrical body, at the lower end of which there is a saddle with a through hole, and a locking element resting on the saddle. A divider in the form of a ring with ribs adjacent to the inner surface of the housing adjoins, dividing the inner space of the housing into passage channels for fluid flow. The device is elastically and hermetically fixed inside the neck of the bottle using elastic annular protrusions that prevent leakage of liquid. Pouring liquid out of the bottle after unscrewing the cork and breaking the warranty whisk is done by tilting the bottle, at which the force of the liquid flow pushes the locking element lying on the saddle with a through hole, opening it and passing the liquid through the passage channels of the divider formed by the spaces between the ribs. When the bottle is returned to its initial vertical position, the locking element returns to its original position by gravity and closes the passage opening, after which refilling the bottle with liquid becomes impossible.

 EP, 0670271, B 65 D 49/00, 1995.

 However, the described device has a number of significant drawbacks affecting its functional operation. The locking element, made in the form of a ball, is unstable, which dictates the shape of the vertical guides for seating on the saddle, and these guides are so located that the ball is sandwiched between them, and therefore its mobility is limited. As a result of cooling the container, the pressure in the bottle decreases, which can lead to sticking of the locking element and failure to pour out the liquid, which requires a sharp shaking of the container.

 The closest in technical essence and the achieved effect to the present invention is a safety cap, which contains a cylindrical-shaped sleeve, the upper part of which is a screw stopper, the lower part of the sleeve has a movable elastic annular protrusion for fixing on the bottle, creating an integral connection. A cap with a warranty whisk is pressed onto the screw plug. A casing is installed inside the cork for pouring liquid into a bottle, made in the form of a ring with ribs dividing the internal space into passage channels for liquid flow. An elastic element is installed in the cavity of the housing for pouring liquid, having a base, in the center of which a saddle with a through hole is located. A locking element in the form of a valve is supported on the seat. The elastic element is hermetically fixed inside the neck of the bottle using elastic annular protrusions and is hermetically connected to the housing for pouring liquid, which prevents leakage of liquid. Pouring liquid from the bottle after preliminary rupture of the warranty whisk is carried out by tilting the bottle, at which the force of the liquid flow pushes the locking element lying on the saddle through the opening, opening it and passing the liquid through the passage channels of the housing for filling liquid formed by the spaces between the ribs. When the bottle is returned to its initial vertical position, the locking element returns to its original position by gravity and closes the passage opening, after which refilling the bottle with liquid becomes impossible.

 RU, 2150417, B 65 D 49/02, 2000.

 However, the device selected for the prototype has a number of significant drawbacks affecting its functional operation. Due to the presence of the movable valve, it can be skewed and jammed, as well as sticking when the temperature is lowered due to the reduced pressure in the tank, which leads to failure of the fluid leakage and the need to shake the tank to operate the valve.

 The invention is aimed at increasing the reliability by reducing the number of parts, as well as through the use of the principle of hydraulic shutter.

 The indicated result is achieved in a safety cap for a bottle, including a sleeve with a means of attachment to the neck of the bottle, a plug connected by an easily destructible connection to the upper part of the sleeve, located in the cavity of the plug and connected to it by an easily removable connection, a housing for draining liquid from the bottle, containing an outer and an inner sleeve, an elastic element having a base with a passage channel, a protrusion along the outer contour of the base, hermetically connected to the outer sleeve of the housing for draining liquid and means of tight fastening in the neck of the bottle, characterized in that the elastic element is made with a protrusion along the inner contour of the base, forming with the last and outer protrusion of the base closed along the contour of the last cavity open at the top, and the inner sleeve of the housing for draining the fluid is made with a damped upper end and is located in the latter with its lower part covering the inner protrusion of the elastic element with the formation of a gap between the base and the walls of the said annular cavity of the elastic element.

The invention is illustrated by drawings, where
figure 1 schematically shows the claimed safety cover;
figure 2 is the same assembly with the bottle.

 The safety cap for the bottle contains a sleeve 1 with means 2 for attaching to the outer surface of the bottle with a special shoulder.

 A plug 5 is connected to the upper part of the sleeve 1 by an easily destructible connection 4 (for example, a weakened wall section), also connected by an easy-to-connect connection, for example, by a thread 6, to a body for draining liquid from a bottle, containing the outer and inner sleeves 8 and 9 connected by ribs 7, respectively.

 Between the ribs 7 connecting the bushings 8 and 9, channels 10 are formed for the passage of fluid. In the lower part of the cavity of the outer sleeve 8, an elastic element 11 is installed hermetically relative to it, having a base with a passage channel 12 and with protrusions 13 and 14 along its inner and outer contours, respectively forming an annular cavity 15 open from above. The inner sleeve 9 has a muffled upper end 16, is installed with the possibility of arranging its lower part in the annular cavity 15 and forms a gap in this cavity between the base and the protrusions of the elastic element 11.

 Moreover, the lower end of the sleeve 9 is located below the upper ends of the protrusions 13 and 14 of the elastic element. Thus, the lower part of the sleeve 9 covers the inner protrusion 13 of the elastic element and divides the cavity 15 into two communicating with each other in the lower part of the cavity - the outer cavity and the inner one.

 On the stopper 5, a cap 17 is installed by pressing, having a safety whisk 18. For tight and tight fastening to the bottle 2, the elastic element 11 has a means made in the form of protrusions 19.

 The work is as follows.

 When screwing the stopper 5 with the cap 17, the sleeve 1 is torn off from the stopper 5 along the weakened cross-section of the joint 4 and at the same time the warranty rim 18 is torn off. When the container is tilted, the liquid flows through the passage channel 12 of the elastic element 15 into its cavity 15 and then merges through the passage channels 10 between the bushings 8 and 10 of the housing for draining the liquid from the bottle.

 When the bottle is returned to the vertical position, the liquid located in the channels 10 enters the cavity 15 of the elastic element, first to the outside and then to the inside, creating excessive pressure in the cavity of the bottle, which prevents further liquid flow. The pressure created inside the bottle prevents it from filling with liquid.

 This prevents the bottle from re-filling (or diluting the liquid present in the bottle) by forming a water seal between the elastic member 15 and the sleeve 9 with the top end plugged. 16 This design fits a wide range of bottle shapes. Warranty whisk and water seal provide a high level of protection for bottles from refilling. The side surface of the cap is smooth or under the shagreen. Its upper surface can be made even or with a convex pattern and inscriptions in the manufacturing process. The logo (drawings and inscriptions) is applied on the indicated surfaces with two-color printing or hot stamping. Capping is performed by pressing from top to bottom, by means of a capping machine.

 All parts of the declared safety cover are made of environmentally friendly materials: polyethylene and polystyrene, on high-performance injection molding machines on injection molds with a hot runner system.

 The prototype was made in the pilot mechanical production of IPUP JSC "Multipack" on turning and milling equipment. The body for pouring is made of polymethyl methacrylate (plexiglass). The elastic element is made of caprolon.

 The claimed invention will improve the reliability of the cover during a liquid spill due to the lack of mechanical parts, eliminating the unpleasant consequences associated with sticking and jamming of the valves.

Claims (1)

 A safety cap for a bottle, including a sleeve with a means of attachment to the neck of the bottle, a plug connected by an easily destructible connection to the upper part of the sleeve, a housing for draining liquid from the bottle, comprising an outer and an inner sleeve connected by ribs, connected with an easily removable connection, elastic an element having a base with a passage channel, a protrusion along the outer contour of the base, hermetically connected to the outer sleeve of the housing for draining the liquid, and means of tight crepe line in the neck of the bottle, characterized in that the elastic element is made with a protrusion along the inner contour of the base, forming with the last and outer protrusion of the base closed along the contour of the latter, a cavity open at the top, and the inner sleeve of the housing for draining the liquid is made with a damped upper end and is located in the last with coverage of its lower part of the inner protrusion of the elastic element with the formation of a gap between the base and the walls of the said annular cavity of the elastic element.

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