Packaging tube

Abstract

The present invention provides a packaging tube, comprising an end cap and a middle bundle core having a rotation axis, wherein the middle bundle core has a first end and a second end in the direction of the rotation axis, and comprises a paste holding element for holding contents, a driving element for rotationally driving the paste holding element to move along the rotation axis, a guiding element for limiting the paste holding element to rotate around the rotation axis, and a decorative element, wherein the decorative element is a tubular structure with two ends open; the end cap has a first use state and a second use state, wherein in the first use state, the end cap is combined with the first end of the middle bundle core to close the end opening of the decorative element; in the second use state, the end cap is engaged with the second end of the middle bundle core and combined with the driving element or the guiding element, and can be rotated relative to the decorative element to operate the paste holding element, and can be used as a cover body to protect the internal contents. Compared with the prior art, the present invention reduces structural elements and manufacturing costs.

Description

Technical Field

[0001] The invention relates to the technical field of cosmetic packaging, in particular to a packaging tube for cosmetics. Background Art

[0002] Lip beauty products can make lips rosy and shiny, moisturize and protect lips, enhance facial beauty and correct lip contours, and therefore gradually become an indispensable cosmetic in people's daily lives. A lipstick tube usually includes a top cover, a middle bundle core and a base, wherein the middle bundle core includes beads, a fork, a spiral and a middle bundle for holding the cosmetic paste. When using the cosmetic paste, it is often necessary to first pull off or unscrew the top cover, and then rotate the base to drive the fork and the spiral to rotate relative to each other, so that the rotor moves along the axial direction of the fork, thereby delivering the cosmetic paste. When the paste is used up, the entire lipstick tube is often abandoned, which is wasteful. Summary of the invention

[0003] In view of the problems of the prior art, the present invention provides a cosmetic packaging tube with a replaceable middle bundle core, and its end covers can cooperate with both ends of the middle bundle core to serve as a top cover and a base, which is conducive to reducing manufacturing costs.

[0004] In the present invention, the packaging tube comprises:

[0005] A middle bundle core having a rotation axis, the middle bundle core having a first end and a second end along the direction of the rotation axis, and comprising a paste holding element for holding contents, a driving element for rotationally driving the paste holding element to move along the rotation axis, a guide element for limiting the rotation of the paste holding element around the rotation axis, and a decorative element, the decorative element being a tubular structure with two ends open;

[0006] The end cover has a first use state and a second use state. In the first use state, the end cover is combined with the first end of the middle bundle core to close the end opening of the decorative element; in the second use state, the end cover is engaged with the second end of the middle bundle core and combined with the driving element or the guide element, and can be rotated relative to the decorative element to operate the paste holding element.

[0007] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution, but are merely further supplements or preferences. Under the premise that there are no technical or logical contradictions, each optional method can be combined with the above-mentioned overall solution separately, and multiple optional methods can also be combined.

[0008] Optionally, a first coupling portion is disposed inside the end cover, and the corresponding driving element or guiding element has a second coupling portion adjacent to the second end portion.

[0009] Optionally, the end cover includes a cylinder wall and an end wall, and the first coupling portion is arranged to protrude from the end wall.

[0010] Optionally, a circumferential limiting structure for limiting the relative rotation between the first coupling portion and the second coupling portion and an axial limiting structure for limiting the axial separation between the first coupling portion and the second coupling portion are provided between the first coupling portion and the second coupling portion.

[0011] Optionally, the first combining portion and the second combining portion are mutually nested annular structures, and the circumferential limiting structure includes a cutout extending axially on one of the combining portions and a baffle provided on the other combining portion and extending into the cutout; the axial limiting structure includes a protrusion provided on one of the combining portions and a groove provided on the other combining portion and cooperating with the protrusion.

[0012] Optionally, the first combining portion is located inside the second combining portion.

[0013] Optionally, the first combining portion is provided with a plurality of cutouts, adjacent cutouts form spring sheets, and the second combining portion is provided with a plurality of blocking sheets extending in the radial direction.

[0014] Optionally, in the first use state, the first combining portion extends into the inner cavity of the middle bundle core to serve as an inner plug closing the first end opening.

[0015] Optionally, the decorative element is fixedly connected to the driving element, and the guide element includes a guide element body and a second coupling portion, and the second coupling portion is detachably connected to the guide element.

[0016] Optionally, the guide element and the driving element are tubular structures, wherein the inner wall of the driving element has a spiral driving groove, the side wall of the guide element is provided with an axially arranged guide groove, the paste holding element comprises a paste holding cylinder located inside the guide element and a convex column provided outside the paste holding cylinder, the convex column passes through the guide groove and extends into the driving groove, and the decorative element completely or substantially receives the paste holding element, the driving element and the guide element in its inner cavity.

[0017] Compared with the prior art, the end cover of the present invention can cooperate with the bottom or top of the middle bundle core respectively to put the middle bundle core into or out of use, ensuring that the middle bundle core is replaceable, and the end cover can be used to close the opening of the middle bundle core to protect the internal cosmetics, reduce accessories and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the packaging tube in the first use state;

[0019] Figure 2 is a schematic diagram of the structure of the packaging tube in the second use state;

[0020] Figure 3for Figure 2 Exploded diagram of the structure;

[0021] Figure 4 is a schematic diagram of the structural cross-section of the packaging tube in the first use state;

[0022] Figure 5 is a schematic diagram of the structural cross-section of the packaging tube in the second use state;

[0023] Figure 6 for Figure 5 Enlarged schematic diagram of part A in the middle.

[0024] The reference numerals in the figures are described as follows:

[0025] 10. middle beam core; 11. rotation axis; 12. first end; 13. second end; 14. decorative element; 15. driving element; 151. driving groove; 16. paste holding element; 161. paste holding cylinder; 162. boss; 17. guide element; 171. guide element body; 1711. guide groove; 18. second joint;

[0026] 20. end cover; 21. first joint; 22. cylinder wall; 23. end wall;

[0027] 30. circumferential limiting structure; 31. incision; 32. baffle;

[0028] 40. Axial limiting structure; 41. Protrusion; 42. Groove. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be a central component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be a central component at the same time.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] Traditional packaging tubes are mainly composed of a top cover, a middle bundle core and a base. The middle bundle core generally includes beads, forks, spirals and middle bundles. When using cosmetic paste, the top cover must be pulled off or unscrewed first, the middle bundle is fixed at one end, and the base is rotated at the other end to drive the fork and spiral to rotate relative to each other, so that the beads move along the axial direction of the fork, thereby delivering the cosmetic paste. When the paste is used up, the entire packaging tube will become invalid and be discarded, resulting in a waste of resources.

[0033] In order to solve the above technical problems, a packaging tube provided by an embodiment of the present invention includes a middle bundle core 10 having a rotation axis 11 and an end cap 20, wherein the middle bundle core 10 has a first end 12 and a second end 13 along the direction of the rotation axis 11, see Figures 1-2 ; and it includes a paste holding element 16, a driving element 15, a guide element 17 and a decorative element 14.

[0034] See also Figures 3 to 5 The cream holding element 16 has a tubular structure, is located in the innermost layer of the middle bundle core, and can be used to hold contents, i.e., cosmetics, such as lipstick, etc. The driving element 15, the guiding element 14 and the decorative element are tubular structures, which are sleeved on the outside of the cream holding element 16. The driving element 15 can rotatably drive the cream holding element 16 to move along the rotation axis 11, and the guiding element 17 can limit the cream holding element 16 to rotate around the rotation axis 11 with the driving element 15.

[0035] The decorative element 14 is a tubular structure with openings at both ends, and completely or substantially accommodates the paste containing element 16, the driving element 15 and the guiding element 17 in its inner cavity, so that the middle bundle core 10 cannot be used alone. This feature is beneficial to protecting the internal paste and preventing the paste from being accidentally screwed out due to misoperation.

[0036] In order to meet the requirements of daily use, the present invention is equipped with an end cover 20 that can cooperate with the middle beam core 10. The end cover 20 has a first use state and a second use state. In the first use state, the end cover 20 is combined with the first end 12 of the middle beam core 10 to close the end opening of the decorative element 14. Figure 1 In the second use state, the end cap 20 is combined with the second end portion 13 of the middle beam core 10 and is combined with the driving element 15 or the guide element 17, and can be rotated relative to the decorative element 14 to operate the paste holding element 16, see Figure 2 .

[0037] In the first usage state, the function of the end cap 20 is the same as or similar to that of the top cap, and is used to protect the paste; while in the second usage state, the function of the end cap 20 is the same as or similar to that of the base, that is, holding the decorative element 14, rotating the end cap 20 to rotate the driving element 15 or the guide element 17, thereby driving the paste holding element 16 to move along the rotation axis 11 to deliver the paste.

[0038] In different use states, the end caps 20 need to cooperate with the two ends of the middle beam core 10 respectively, so that the middle beam core 10 can enter or release the working state. Therefore, the end caps 20 and the two ends of the middle beam core 10 are required to have mutually cooperating parts or structures.

[0039] In one embodiment, the end cap 20 is provided with a first coupling portion 21 inside, and the corresponding guide element 17 has a second coupling portion 18 adjacent to the second end 13. In the first use state, the first coupling portion 21 can be engaged with the first end 12, thereby closing the end opening of the decorative element 14; in the second use state, the first coupling portion 21 of the end cap 20 is matched with the second coupling portion 18 to achieve the connection between the end cap 20 and the middle bundle core 10, and the end cap 20 can rotate relative to the decorative element 14 to drive the paste holding element 16 to move in the axial direction, see Figures 4-5 .

[0040] For packaging tubes of some structures, the decorative element and the guide element are fixedly connected, the paste containing element has a transmission rod extending into the interior of the driving element, the guide element can limit the rotation of the transmission rod, and the driving element is provided with a second coupling portion.

[0041] There are many ways to combine the first joint portion 21 with the first end portion 12, such as threaded or buckled fit. Different fits produce different user experiences. You can choose a suitable fit based on the desired user experience. In one embodiment, the end cap 20 includes a barrel wall 22 and an end wall 23. The first joint portion 21 is protruding from the end wall 23. Figures 3-4 The first coupling portion 21 can be buckled with the end opening of the decorative element 14, and the assembly is simple. Generally, the assembly and positioning of the end cover 20 can be completed by simply inserting it.

[0042] See also Figure 4 In one embodiment, in the first use state, the first coupling portion 21 extends into the inner cavity of the middle bundle core to serve as an inner plug to close the first end opening. The structure is simple, the two have good coaxiality, and the coupling is strong, which effectively seals the end opening and protects the paste inside.

[0043] In the second use state, in order to ensure that the first coupling portion 21 can be closely matched with the second coupling portion 18, in one embodiment, a circumferential limiting structure 30 for limiting the relative movement of the first coupling portion 21 and the second coupling portion 18 and an axial limiting structure 40 for limiting the axial separation of the first coupling portion 21 and the second coupling portion 18 are provided between them, see Figures 5-6 .

[0044] Specifically, in one embodiment, the first joint portion 21 and the second joint portion 18 are mutually nested annular structures, the circumferential limiting structure 30 includes a notch 31 provided in one of the joint portions and extending along the axial direction, and a baffle 32 provided in the other joint portion and extending into the notch 31; the axial limiting structure 40 includes a protrusion 41 provided in one of the joint portions and a groove 42 provided in the other joint portion and cooperating with the protrusion 41, see Figure 6 The cooperation between the cutout 31 and the baffle 32 in the circumferential limiting structure 30 enables accurate positioning of the end cover 20 during assembly, while the snap fit between the protrusion 41 and the groove 42 in the axial limiting structure 40 facilitates flexible installation and removal of the end cover 20 .

[0045] In one embodiment, the first joint portion 21 is located inside the second joint portion 18. Accordingly, in the circumferential limiting structure 30, the cutout 31 is provided on the first joint portion 21, and the stopper 32 is provided on the second joint portion 18; in the axial limiting structure 40, the protrusion 41 is provided on the first joint portion 21, and the groove 42 is provided on the second joint portion 18. When the first joint portion extends into the inner cavity of the middle beam core, the protrusion 41 is interference fit with the inner cavity of the middle beam core.

[0046] Furthermore, in one embodiment, the first coupling portion 21 is provided with a plurality of cutouts 31 , and adjacent cutouts 31 form spring plates, and the second coupling portion 18 is provided with a plurality of radially extending blocking plates 32 , so as to strengthen the circumferential fixation between the two.

[0047] In order to realize the replaceability of the middle bundle core, in one embodiment, the decorative element 14 is fixedly connected to the driving element 15 to play a protective and decorative role; the guide element 17 includes a guide element body 171 and a second connecting portion 18, and the second connecting portion 18 is detachably connected to the guide element body 171 (see Figure 3 ), the detachable connection can be achieved by using a keyway structure and / or a magnetic structure, both of which are prior arts and will not be described in detail in this embodiment.

[0048] like Figure 6 As shown, one end of the second coupling portion 18 is provided with a connector that is engaged with the guide element 17 , and the connector is inserted into the bottom of the guide element body 171 , and the connection is achieved through a keyway structure and a clamping ring structure.

[0049] Of course, the guide element body 171 and the second coupling portion 18 may also be integrally formed and arranged to be detachably connected, so that the guide element body 171 can use the existing structure without the need to design and develop a new mold.

[0050] In one embodiment, the guide element 17 and the driving element 15 are tubular structures, wherein the inner wall of the driving element 15 has a spiral driving groove 151, and the side wall of the guide element 17 is provided with a guide groove 1711 arranged along the axial direction. The paste holding element 16 includes a paste holding cylinder 161 located inside the guide element 17 and a convex column 162 provided outside the paste holding cylinder 161, and the convex column 162 can pass through the guide groove 1711 and extend into the driving groove 151, see Figure 3 In the second use state, holding the decorative element 14 and rotating the end cover 20 can drive the guide element 17 and the second joint 18 to rotate. Due to the restriction of the guide groove 1711, the guide element 17 drives the protrusion 162 to move along the driving groove 151, so that the paste containing element 16 moves linearly in the axial direction to deliver the paste.

[0051] The packaging tube provided by the present invention realizes the change of the use state through the flexible cooperation between the end cap and the two ends of the middle bundle core, the operation method is simple, and the structural elements are saved, thereby reducing the manufacturing cost.

[0052] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. When the technical features in different embodiments are embodied in the same figure, it can be regarded that the figure also discloses the combination examples of the various embodiments involved.

[0053] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A packaging tube, characterized in that: include: A middle bundle core having a rotation axis, the middle bundle core having a first end and a second end along the direction of the rotation axis, and comprising a paste holding element for holding contents, a driving element for rotationally driving the paste holding element to move along the rotation axis, a guide element for limiting the rotation of the paste holding element around the rotation axis, and a decorative element, the decorative element being a tubular structure with two ends open; The end cap has a first use state and a second use state. In the first use state, the end cap is combined with the first end of the middle bundle core to close the end opening of the decorative element. In the second use state, the end cap is engaged with the second end of the middle bundle core and combined with the driving element or the guiding element, and can be rotated relative to the decorative element to operate the paste holding element. The end cover is provided with a first coupling portion inside, and the corresponding driving element or guiding element has a second coupling portion adjacent to the second end; A circumferential limiting structure for limiting the relative rotation of the first and second combining parts and an axial limiting structure for limiting the axial separation of the first and second combining parts are provided between the first and second combining parts; The guide element and the driving element are tubular structures, wherein the inner wall of the driving element has a spiral driving groove, the side wall of the guide element is provided with an axially arranged guide groove, and the paste containing element includes a paste containing cylinder located inside the guide element and a convex column arranged outside the paste containing cylinder, and the convex column passes through the guide groove and extends into the driving groove.

2. The packaging tube according to claim 1, characterized in that: The end cover comprises a cylinder wall and an end wall, and the first combining portion is arranged to protrude from the end wall.

3. The packaging tube according to claim 1, characterized in that: The first and second combining parts are mutually nested annular structures, and the circumferential limiting structure includes a cutout extending axially on one of the combining parts and a baffle extending into the cutout on the other combining part; the axial limiting structure includes a protrusion on one of the combining parts and a groove on the other combining part cooperating with the protrusion.

4. The packaging tube according to claim 3, characterized in that: The first combining portion is located inside the second combining portion.

5. The packaging tube according to claim 3, characterized in that: The first combining portion is provided with a plurality of cutouts, and adjacent cutouts form spring sheets. The second combining portion is provided with a plurality of blocking sheets extending in the radial direction.

6. The packaging tube according to any one of claims 2 to 5, characterized in that: In the first use state, the first coupling portion extends into the inner cavity of the middle bundle core to serve as an inner plug closing the opening of the first end.

7. The packaging tube according to claim 1, characterized in that: The decorative element is fixedly connected to the driving element, and the guide element includes a guide element body and a second coupling portion, and the second coupling portion is detachably connected to the guide element body.

8. The packaging tube according to claim 1, characterized in that: The decorative element completely or substantially accommodates the paste holding element, the driving element and the guiding element in its inner cavity.

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