Screw-out type anti-dislocation all-plastic bottle cap

Abstract

The utility model provides a screw-out type anti-dislocation all-plastic bottle cap which comprises an upper cap, an inner cap, an outer lower cylinder, a combined cylinder and an inner plug, the inner cap and the combined cylinder are connected through threads and installed from the lower end of the outer lower cylinder, the upper cap is arranged on the inner cap, a plurality of vertical shuttles b are arranged on the inner wall of the upper cap, hooks a are arranged on the vertical shuttles b, and the hooks a are connected with the inner plug. A hook a on the upper cover is buckled with a groove c on the inner cover, an inner plug is arranged in the combined barrel, the combined barrel is in interference fit with the inner plug, a circle of protrusion e is arranged at the upper end of the outer lower barrel, and the protrusion e of the outer lower barrel is embedded in a lower inner opening of the upper cover. The plurality of vertical edges are added in the upper cover to replace wall thickness, so that a part of materials are saved, the purpose of increasing the wall thickness is achieved, the appearance quality can be ensured during injection molding, and sink marks are prevented; in order to prevent the upper cover and the outer lower barrel from being easily dislocated during assembly, a circle of protrusions are additionally arranged on the lower barrel to play a role in positioning, the protrusions of the outer lower barrel are embedded in the upper cover, and the upper cover and the outer lower barrel are limited in the radial direction and cannot move freely to prevent dislocation.

Description

Technical Field

[0001] The utility model belongs to the technical field of anti-counterfeiting bottle cap packaging, in particular to a screw-out anti-dislocation all-plastic bottle cap. Background Art

[0002] Currently, some anti-counterfeit all-plastic bottle caps have relatively thick upper caps due to structural reasons, making injection molding difficult. This not only wastes materials but also easily produces sink marks during injection molding, resulting in substandard product quality. Furthermore, during assembly, the upper cap and the outer lower barrel are the exterior components. When assembled together, the upper cap and the outer lower barrel are easily misaligned at the joint, resulting in an unsightly appearance. The key issue addressed by this utility model is how to save material during injection molding of the upper cap while simultaneously meeting structural and quality requirements, and ensuring that the upper cap and the outer lower barrel are well combined and assembled, maintaining concentricity and preventing misalignment. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a screw-out anti-dislocation all-plastic bottle cap.

[0004] The technical solution of the present utility model is achieved as follows: a screw-out anti-misalignment all-plastic bottle cap, comprising an upper cover, an inner cover, an outer lower tube, a combined tube and an inner plug, the inner cover and the combined tube being connected by threads and installed from the lower end of the outer lower tube, the upper cover being arranged on the inner cover, a plurality of vertical shuttles b being provided on the inner wall of the upper cover, the vertical shuttles b being provided with hooks a, the hooks a on the upper cover being interlocked with the grooves c on the inner cover, an inner plug being arranged in the combined tube, the combined tube and the inner plug being interference fit, a circle of protrusions e being provided on the upper end of the outer lower tube, the protrusions e of the outer lower tube being embedded in the lower inner opening of the upper cover.

[0005] The beneficial effects of this utility model are as follows: the conventional upper cover wall is thinned by adding multiple vertical ridges inside to replace the thick wall, thus saving some material while increasing the wall thickness. This also ensures the appearance quality and prevents sink marks during injection molding. To prevent the upper cover and the outer lower barrel from being misaligned during assembly, a circle of protrusions is added to the lower barrel to serve as a positioning function. The protrusions on the outer lower barrel are embedded in the upper cover, restricting the upper cover and the outer lower barrel in the radial direction, preventing them from moving freely and preventing misalignment. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0007] Figure 2 This is a schematic diagram of the explosion of the bottle cap of the utility model;

[0008] Figure 3 This is a schematic diagram of the upper cover and the outer lower cylinder of the utility model being assembled together.

[0009] Parts Description: 1. Upper cover, 2. Inner cover, 3. Outer lower tube, 4. Combination tube, 5. Inner plug, a. Hook, b. Vertical ridge, c. Groove, d. Lower edge, e. Protrusion. DETAILED DESCRIPTION

[0010] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0011] Refer to the attached Figure 1-3 :like Figure 1 A twist-off, anti-dislocation, all-plastic bottle cap comprises five components: an upper cap 1, an inner cap 2, an outer lower barrel 3, a combined barrel 4, and an inner plug 5. The inner cap 2 and combined barrel 4 are threadedly connected and inserted from the lower end of the outer lower barrel 3. The upper cap 1 is then press-fitted onto the inner cap 2. The two are locked together by a hook a on the upper cap 1 and a groove c on the inner cap 2 to prevent them from falling out. The inner plug 5 is inserted from the lower end of the outer lower barrel 3, creating an interference fit to prevent it from falling out and sealing the bottle to prevent liquid spillage. When opened, the lower edge d of the inner cap 2 escapes from the outer lower barrel 3. Because the lower edge d of the inner cap 2 is too large to return to the outer lower barrel 3, this achieves an anti-counterfeiting effect.

[0012] The traditional upper cover 1 has a thick wall. The utility model reduces the wall thickness and provides multiple vertical edges b on it. Hooks a are processed on the vertical edges b. This not only solves the problems of the upper cover 1 being too thick, the injection molding easily causing shrinkage marks, and the appearance quality not meeting the standards, but also saves some materials and reduces costs. The hooks a processed on the vertical edges b can be stuck in the groove c of the inner cover 2 to prevent the outer cover 1 and the inner cover 2 from falling off, thereby achieving the purpose of structural function.

[0013] When the upper cover 1 is assembled with the outer lower tube 3, the inner cover 2, and the combined tube 4, there is a gap between the combined tube 4 and the outer lower tube 3 and the inner cover 2. Therefore, after assembly, the upper cover 1 and the outer lower tube 3 are always misaligned at the joint, affecting the appearance. A circle of protrusions e is added to the upper end of the outer lower tube 3, the size of which is exactly the same as the inner opening of the upper cover 1. When the two are assembled, the protrusions e of the outer lower tube 3 are embedded in the lower inner opening of the upper cover 1. The upper cover 1 and the outer lower tube 3 are restricted in the radial direction and cannot move freely in the radial direction, preventing misalignment. This overall solves the technical problems of the upper cover having a thick wall diameter, which is prone to sink marks in injection molding, and the problem of easy misalignment when assembling the upper cover and the lower tube.

[0014] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0015] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0016] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A screw-out anti-dislocation all-plastic bottle cap, comprising an upper cover (1), an inner cover (2), an outer lower barrel (3), a combined barrel (4) and an inner plug (5), wherein the inner cover (2) and the combined barrel (4) are connected by threads and inserted from the lower end of the outer lower barrel (3), and the upper cover (1) is arranged on the inner cover (2), characterized in that A plurality of vertical shuttles b are provided on the inner wall of the upper cover (1), and a hook a is provided on the vertical shuttle b. The hook a on the upper cover (1) is interlocked with the groove c on the inner cover (2). An inner plug (5) is provided in the combined cylinder (4), and the combined cylinder (4) and the inner plug (5) are interference fit. A circle of protrusions e is provided on the upper end of the outer lower cylinder (3), and the protrusions e of the outer lower cylinder (3) are embedded in the lower inner opening of the upper cover (1).

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