Opening device and cap

Abstract

The utility model provides a cap which comprises a cap body and an antifouling block, and the cap body is connected with a base of an opening device; a long-strip-shaped protruding part is arranged on the side, facing the flange of the base, of the anti-fouling block, the anti-fouling block further comprises a plurality of connecting arms, and the connecting arms are used for connecting the anti-fouling block to the cap body. According to the technical scheme, during assembly, the cap body is directly pressed on the base, the protruding part on one side of the antifouling block is pressed on the flange of the base, ultrasonic welding operation can be carried out without additional positioning steps, assembly is easy, the assembly efficiency is high, and the assembly time is saved.

Description

TECHNICAL FIELD

[0001] Embodiments of the present disclosure relate to an opening device and a cap, and in particular to an opening device and a cap for a package that can be reclosed. BACKGROUND

[0002] Some opening devices of packages, such as beverage packaging boxes, are connected to the packages by a dirt-proof ring or a dirt-proof block to determine whether the packages have been opened. In some cases, the dirt-proof ring or the dirt-proof block is disposable, and if the package has been opened, the dirt-proof ring will be damaged. SUMMARY

[0003] According to a first aspect of the present disclosure, a cap is provided, characterized by comprising: a cap body connected with a base of an opening device; and a dirt-proof block provided with an elongated protrusion on a side of a flange of the base, the dirt-proof block further comprising a plurality of connecting arms for connecting the dirt-proof block to the cap body.

[0004] According to the first aspect of the present disclosure, characterized in that: the dirt-proof block is not provided with mounting protrusions at both ends of the side of the flange of the base, the mounting protrusions comprising one of a cylinder, a circular truncated cone, or a cone.

[0005] According to the first aspect of the present disclosure, characterized in that: the cap is used for the opening device, the opening device comprising the base, the base having a neck portion and a flange provided at one axial end of the neck portion and having a surface without holes or grooves, the neck portion defining an opening having an axis, the neck portion extending away from an upper surface of the flange along the axis, the flange extending outwardly around the neck portion and away from the axis, the flange being configured to connect the base to a package, wherein the cap body is threadedly connected with the neck portion and is rotatable about the axis to be tightened or loosened on the base; and wherein the protrusion is configured to be fixed with the flange by ultrasonic welding.

[0006] According to the first aspect of the present disclosure, characterized in that: the plurality of connecting arms are at least two connecting arms, and the protrusion is provided at a middle position of the dirt-proof block.

[0007] According to a second aspect of the present disclosure, there is provided an opening device for a package, characterized in comprising: a base and a cap, the base having a neck and a flange provided at one axial end of the neck and being surface-free of holes, the neck defining an opening having an axis, the neck extending along the axis away from an upper surface of the flange, the flange extending outwardly away from the axis around the neck, the flange being used to connect the base on the package; and the cap comprising: a cap body and an anti-fouling block, the cap body being threadedly connected with the neck of the base and being rotatable around the axis to be screwed on or unscrewed from the base; the anti-fouling block being connected with the cap body, the anti-fouling block being provided with a strip-shaped protrusion at a side thereof facing the flange, the protrusion being configured to be fixed with the flange by ultrasonic welding.

[0008] According to the second aspect of the present disclosure, the anti-fouling block has a plurality of connecting arms for connecting the anti-fouling block on the cap body.

[0009] According to the second aspect of the present disclosure, the anti-fouling block is not provided with mounting protrusions at both ends of a side thereof facing the flange of the base, the mounting protrusions comprising one of a cylinder, a circular truncated cone or a cone.

[0010] According to the second aspect of the present disclosure, the protrusion is provided at a middle position of the anti-fouling block; wherein the protrusion extends along a strip-shaped direction perpendicular to a direction of protrusion of the protrusion relative to the anti-fouling block; and wherein a cross section of the protrusion perpendicular to the strip-shaped direction is in the shape of an inverted triangle.

[0011] According to the second aspect of the present disclosure, in the case that the anti-fouling block is fixed with the flange, when the cap body is unscrewed from the base, the plurality of connecting arms can be broken so that the cap body can be rotated relative to the base.

[0012] According to the second aspect of the present disclosure, the opening device is made of plastic. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a schematic view of an opening device according to an embodiment of the present application applied on a package;

[0014] Figure 2 is Figure 1 an exploded view of the opening device in

[0015] Figure 3A is Figure 2 a perspective view of the cap of the opening device shown in

[0016] Figure 3B yes Figure 2 A side view of the cap of the opening device shown;

[0017] Figure 3C yes Figure 3A Enlarged view A in the image;

[0018] Figure 3D yes Figure 3B Enlarged view B in the image;

[0019] Figure 4A yes Figure 2 A perspective view of the opening device in its assembled closed state;

[0020] Figure 4B This is a diagram illustrating how to loosen the cap from the base during use;

[0021] Figure 4C This is a diagram showing how to open the top cover after the cap has been completely loosened. Detailed Implementation

[0022] Various specific embodiments of the present disclosure will now be described with reference to the accompanying drawings, which form part of this specification. It should be understood that although terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "top," and "bottom," are used herein to describe various exemplary structural parts and elements, their use is merely for illustrative purposes and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed herein can be arranged in different orientations, these terms indicating direction are illustrative only and should not be considered limiting.

[0023] Figure 1 This is a schematic diagram of an opening device 100 applied to a package 10 according to an embodiment of the present disclosure.

[0024] like Figure 1 As shown, the opening device 100 is disposed on the top of the package 10 (e.g., a beverage packaging box), surrounding and covering the outlet of the package 10 (not shown in the figure), for opening or closing the outlet of the package 10. Those skilled in the art will understand that in some other embodiments, if the outlet of the package 10 is located at other parts of the package 10, the opening device 100 can also be adaptively configured according to the outlet location.

[0025] Figure 2 yes Figure 1 Exploded view of the opening device.

[0026] like Figure 2As shown, the opening device 100 comprises a cap and a base 104, which are made of plastic and can be integrally formed by injection molding, respectively. The base 104 is arranged around the outlet of the packaging 10. The base 104 has a neck 220 defining an opening 202, which can be arranged in fluid communication with the outlet of the packaging 10, and a flange 230 arranged axially at the lower end of the neck 220. The opening 202 has a central axis X, the neck 220 extends along the central axis X away from the upper surface of the flange 230, and the flange 230 extends around the neck 220 and away from the central axis X for connecting the base 104 to the packaging 10. The cap comprises a cap body 102, which is threadedly connected to the neck 220 of the base 104 and can be rotated around the central axis X by the threaded connection to be loosened or tightened again from the neck 220 of the base 104, so as to expose or close again the outlet of the packaging 10.

[0027] The cap further comprises a dirt-repelling block 204 having a plurality of connecting arms 206 for connecting the dirt-repelling block 204 to the cap body 102. In the embodiment of the present application, the dirt-repelling block 204 and the plurality of connecting arms 206 are integrally formed with the cap body 102 by injection molding, and in some other embodiments, the dirt-repelling block 204 and the cap body 102 can be manufactured separately and then fixedly connected together by, for example, hot melting. In the embodiment of the present application, the number of the connecting arms 206 is four, and those skilled in the art can understand that in some other embodiments, the number of the connecting arms 206 can also be other numbers, for example, three or at least two.

[0028] The dirt-repelling block 204 can be fixedly connected to the flange 230 of the base 104 by ultrasonic welding. In the case that the dirt-repelling block 204 and the flange 230 are fixed to each other, when the cap body 102 is loosened from the base 104, the connecting arms 206 can be broken under the action of an external force, so as to allow the cap body 102 to continue to rotate relative to the base 104.

[0029] Figures 3A-3D The specific structure of the cap is shown, wherein, Figure 3A is Figure 2 the perspective view of the cap of the opening device from the bottom view, Figure 3B is Figure 2 the side view of the cap of the opening device, Figure 3C is Figure 3A the enlarged view A in Figure 3D is Figure 3B the enlarged view B in

[0030] As Figures 3A-3DAs shown, the cap body 102 shares a central axis X with the opening 202 of the base 104, and has an inner cavity 312. The annular inner wall 314 of the inner cavity 312 is provided with internal threads 316 for screwing with the neck 220 of the base 104. The lower surface 322 of the anti-fouling block 204 connected with the cap body 102 has an elongated strip-shaped protrusion 302, which is arranged at the middle position of the lower surface 322 of the anti-fouling block 204. The protrusion 302 is formed by protruding from the lower surface 322 of the anti-fouling block 204, and the direction of the elongated strip-shaped protrusion 302 is perpendicular to the direction of the protrusion 302 relative to the anti-fouling block 204. By Figures 3C-3D As can be seen, the protrusion 302 is in the shape of an inverted triangle in the cross section perpendicular to the elongated strip-shaped direction, which is beneficial for focusing the energy on the triangular tip of the protrusion 302 during ultrasonic welding, thereby obtaining a better welding effect.

[0031] Specifically, when the protrusion 302 of the anti-fouling block 204 is in contact and pressed against the flange 230 of the base 104, ultrasonic energy (i.e. mechanical vibration energy) can be applied to the other side of the anti-fouling block 204 (the upper side 321 of the anti-fouling block 204) relative to the protrusion 302 by an ultrasonic generator, so that the ultrasonic energy is concentrated on the triangular tip of the protrusion 302, thereby melting the material at the tip of the protrusion 302 and welding it to the surface of the flange 230.

[0032] Figures 4A-4C A schematic view of the opening device 100 opening the outlet of the packaging 10, Figure 4A is Figure 2 a perspective view of the opening device in an assembled closed state, Figure 4B is a schematic view of unscrewing the cap from the base during use, Figure 4C is a schematic view of turning up the cap after the cap is completely unscrewed.

[0033] As Figure 4A shown, since the cap and the base 104 of the opening device 100 are made of plastic and have a certain elasticity, when the cap and the base 104 of the opening device 100 are in the Figure 2 separated state shown, the cap can be forcibly pressed on the base 104 by pressing, and the cap and the base 104 are threadedly connected. After the cap body 102 and the base 104 are assembled together by the above-mentioned pressing method, the protrusion 302 of the anti-fouling block 204 is kept in contact and pressed against the flange 230 of the base 104, and ultrasonic energy is applied to the upper side 321 of the anti-fouling block 204 by an ultrasonic generator, thereby melting the material at the tip of the protrusion 302 of the anti-fouling block 204 and welding it to the upper surface 412 of the flange 230.

[0034] AsFigures 4B-4C As shown, in one embodiment of the present application, the cap body 102 is composed of two parts, an upper cover 422 and a cap base 424, which are connected together through a cap connecting part 426. The internal thread 316 of the cap body 102 is arranged at the inner annular surface of the upper cover 422, and a plurality of connecting arms 206 are arranged at the outer side of the cap base 424 for connecting the anti-fouling block 204 to the cap base 424. Those skilled in the art can understand that, in some other embodiments, the cap body 102 can also be formed in an integral structure, and the connecting arms 206 are arranged at the outside of the cap body 102 and connect the anti-fouling block 204 to the cap body 102.

[0035] When it is needed to open the outlet of the packaging 10, a rotation force in the opening direction is applied to the cap body 102, and the connecting arms 206 can be broken under the action of the rotation force, so that the cap body 102 can be rotated relative to the base 104 in the unscrewing direction. When the cap body 102 is rotated to the position where the internal thread 316 arranged at the upper cover 422 is disengaged from the external thread arranged on the neck 220 of the base 104, the upper cover 422 can be flipped open in the manner as shown, so as to expose the outlet of the packaging 10, and the opening of the packaging 10 is completed. If the cap is in an integral structure, the opening of the packaging 10 can be realized by directly unscrewing and removing the cap after the connecting arms 206 are broken. Figure 4C

[0036] In the prior art opening device, the following scheme is used to fix the connecting cap and the base: a protruding pin part is arranged on the anti-fouling block of the cap, a pin hole is arranged at the corresponding position of the flange of the base, the pin part is inserted into the pin hole, and the pin part and the pin hole are fixed together by using hot melting welding, so as to realize the fixation of the cap and the base in the assembled state. However, this fixation method needs to pre-position the cap and the base accurately, and then the pin part is inserted into the pin hole for fixation, which is low in assembly efficiency, long in time consumption, and not conducive to the batch manufacturing of products.

[0037] In the technical scheme of the present application, no groove or pin hole is arranged on the flange 230 of the base 104, and no mounting or connecting protrusion of a cylindrical body, a circular conical body or a conical body is arranged at the two ends of the lower surface 322 of the anti-fouling block 204, only an elongated protrusion 302 is arranged at the middle position of the side of the anti-fouling block 204 facing the flange 230. In assembly, the cap body 102 is directly pressed on the base 104, and the protrusion 302 at one side of the anti-fouling block 204 is pressed tightly on the flange 230 of the base 104, and no additional positioning step is needed for the ultrasonic welding operation, which is easy to assemble, high in assembly efficiency, and saves a large amount of assembly time.

[0038] ​While the present disclosure has been described in connection with the examples of the embodiments outlined above, it will be evident to those skilled in the art that alternatives, modifications, variations, improvements, and / or substantial equivalents of certain features, functions, aspects, and / or embodiments can be apparent. Additionally, the technological effects and / or problems described in the specification are exemplary and not limiting; therefore, the disclosure made herein can be used to solve other technological problems and have other technological effects and / or can solve other technological problems. Accordingly, the examples of the embodiments of the present disclosure, as set forth above, are intended to be illustrative not limiting. Various changes can be made without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is intended to include all such alternatives, modifications, variations, improvements, and / or substantial equivalents.

Claims

1. A cap characterized in that Comprising: a cap body (102) connected with a base (104) of an opening device (100); and a dirt-proof block (204) provided with a long strip-shaped protrusion (302) on one side of a flange (230) of the base (104), the dirt-proof block (204) further comprising a plurality of connecting arms (206) for connecting the dirt-proof block (204) on the cap body (102).

2. The cap according to claim 1, characterized in that: two ends of the dirt-proof block (204) on the one side of the flange (230) of the base (104) are not provided with mounting protrusions, the mounting protrusions comprising one of a cylinder, a circular truncated cone or a cone.

3. The cap according to claim 1, characterized in that: the cap is used for the opening device (100) comprising the base (104) having a neck (220) defining an opening (202) having an axis (X), the neck (220) extending away from an upper surface of a flange (230) of the base (104) along the axis (X), the flange (230) surrounding the neck (220) and extending outwardly away from the axis (X), the flange (230) being used for connecting the base (104) on a package (10), wherein the cap body (102) is threadedly connected with the neck (220) and rotatable about the axis (X) to be screwed on or unscrewed from the base (104); and wherein the protrusion (302) is configured to be fixed with the flange (230) by ultrasonic welding.

4. The cap according to claim 3, characterized in that: the plurality of connecting arms (206) are at least two connecting arms (206), and the protrusion (302) is arranged at a middle position of the dirt-proof block (204). Comprising:

5. An opening device (100) for a package (10), characterized in that a base (104) having a neck (220) defining an opening (202) having an axis (X), the neck (220) extending away from an upper surface of a flange (230) of the base (104) along the axis (X), the flange (230) surrounding the neck (220) and extending outwardly away from the axis (X), the flange (230) being used for connecting the base (104) on a package (10); and a cap comprising: a cap body (102) threadedly connected with the neck (220) of the base (104) and rotatable about the axis (X) to be screwed on or unscrewed from the base (104); and ​ ​ A dirt-proof block (204) is connected with the cap body (102), and a long-strip-shaped protrusion (302) is arranged on one side of the dirt-proof block (204) facing the flange (230), and the protrusion (302) is configured to be fixed with the flange (230) by ultrasonic welding.

6. The opening device according to claim 5, wherein: The dirt-proof block (204) has a plurality of connecting arms (206) for connecting the dirt-proof block (204) to the cap body (102).

7. The opening device according to claim 5, wherein: The dirt-proof block (204) is not provided with mounting protrusions at both ends of the side of the flange (230) facing the base (104), and the mounting protrusions include one of a cylinder, a circular truncated cone or a cone.

8. The opening device of claim 5, wherein: The protrusion (302) is arranged at a middle position of the dirt-proof block (204); The protrusion (302) is perpendicular to the protrusion (302) relative to the protrusion direction of the dirt-proof block (204) in the direction of long-strip-shaped extension; and The protrusion (302) is in the shape of an inverted triangle in the direction perpendicular to the direction of long-strip-shaped extension.

9. The opening device according to claim 6, wherein: When the cap body (102) is loosened from the base (104) in the case that the dirt-proof block (204) is fixed with the flange (230), the connecting arms (206) can be broken to allow the cap body (102) to rotate relative to the base (104).

10. The opening device of claim 5, wherein: The opening device (100) is made of plastic.

Images