Three pieces in environment-friendly lipstick package based on O-shaped ring buffer structure

Abstract

Three pieces in an environment-friendly lipstick package based on an O-shaped ring buffer structure relate to the technical field of cosmetic packages, and comprise a fork, a bead used for installing paste and a spiral arranged outside the fork in a sleeving mode, a notch is formed in the wall face of the fork in the axial direction of the fork, a spiral guide groove is formed in the inner circumferential face of the spiral, and the bead is arranged in the fork. Bulges which penetrate through the notches and extend into the guide grooves are arranged on the peripheral surfaces of the beads; at least one annular groove is formed in the periphery of the lower portion of the fork, an O-shaped ring made of elastic materials is clamped in the annular groove, a limiting protrusion protruding towards the inner side is annularly arranged at the bottom of the spiral inner wall, and the limiting protrusion extends into the annular groove and abuts against the peripheral face of the O-shaped ring. Rotation damping is provided through elastic deformation of the O-shaped ring, and axial displacement of the spiral and the fork is limited. According to the utility model, oil-free and glue-free characteristics are realized through simpler and more reliable characteristics, and the problems of stability, assembly complexity and abrasion caused by an elastic sheet structure are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cosmetic packing technical field especially points to a kind of environmental protection lipstick packing inner three pieces based on O-ring buffer structure. BACKGROUND

[0002] The core components of traditional lipstick packaging tube usually include a "inner three-piece" structure composed of a spiral, a fork and a bead. To achieve a smooth feel when rotating the lipstick out / in, the traditional solution requires applying lubricating oil (such as silicone oil) to the contact surface between the spiral and the fork. However, the lubricating oil can contaminate the lipstick and the user's lips, and the oil may dry out after long-term use, causing rotation jamming. In addition, the base of the traditional packaging tube is usually made of aluminum-plastic composite structure, which needs to be bonded by glue, and there is a risk of glue contamination. Moreover, the production process is complex and the cost is relatively high.

[0003] To solve the above problems, some improvement schemes have been proposed in the prior art. For example, the utility model patent with the authorization announcement number CN209031379 U (hereinafter referred to as the "original patent") discloses an oil-free and glue-free environmental protection lipstick packaging inner three-piece, which sets multiple spring sheets (first spring sheets and second spring sheets) on the outer wall of the fork to abut against the inner wall of the spiral, uses the friction between the spring sheets and the spiral to provide rotational damping, and replaces the role of lubricating oil. At the same time, a full-plastic structure is adopted to avoid glue bonding.

[0004] However, in the original patent, the first spring sheets and the second spring sheets need to be formed by injection molding, which requires high requirements for the thickness, elastic modulus and uniformity of the spring sheets. Long-term repeated rotation may cause fatigue deformation of the spring sheets, gradually weaken the friction, and affect the consistency of the feel. The distribution of multiple spring sheets (such as four first spring sheets and four second spring sheets on the upper and lower parts) needs to be accurately positioned, which increases the difficulty of mold design and production, and may cause rotation jamming due to misalignment of the spring sheets during assembly. Furthermore, the hard friction between the spring sheets and the inner wall of the spiral may produce abnormal noise, and long-term wear may cause scratches on the inner wall of the spiral, affecting the appearance and performance. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide an environmental protection lipstick packaging inner three-piece based on O-ring buffer structure, which realizes oil-free and glue-free with simpler and more reliable characteristics, and solves the stability, assembly complexity and wear problems caused by the spring sheet structure.

[0006] To solve the above technical problems, the utility model discloses the following technical scheme: A kind of environmental protection lipstick packaging inner three pieces based on O-ring buffer structure, including fork, be used to install cream pearl and the spiral of being set to the outside of fork, the wall surface of fork is opened with notched along its axial direction, spiral inner periphery is equipped with helical guide slot, pearl is arranged in fork, the outer periphery of pearl is equipped with protrusion passing through notched and extending into guide slot, when the relative rotation of fork and spiral occurs, protrusion moves along notched and guide slot to drive pearl axial lifting and lowering;The lower outer periphery of fork is equipped with at least one annular groove, O-ring of elastic material is clamped in the annular groove, the bottom of spiral inner wall is annularly equipped with limit protrusion that protrudes to inboard, limit protrusion extends into the annular groove and is pressed to the outer periphery of O-ring, and rotation damping is provided by the elastic deformation of O-ring and the axial displacement of spiral and fork is limited.

[0007] Preferably, the number of annular grooves is two, and each annular groove is spaced apart upward and downward along the outer periphery of the lower part of the fork. One O-ring is clamped in each annular groove. The bottom of the inner wall of the spiral is provided with two limit protrusions for pressing against the two O-rings, respectively.

[0008] More preferably, the fork, the pearl and the spiral are all made of polypropylene or biobased plastic.

[0009] Compared with the prior art, the utility model provides uniform friction by the elastic deformation of the O-ring, completely replaces the traditional lubricating oil, avoids the pollution of the oil to the cream and the lip, eliminates the need for glue bonding, and realizes a truly oil-free and glue-free environmental protection structure. The elastic abutment of the O-ring and the inner wall of the spiral forms continuous and stable rotation damping. Compared with the discrete spring friction of the original patent, the friction distribution is more uniform, the rotation process is smooth without jerk, and there is no damping attenuation problem caused by spring fatigue after long-term use. Furthermore, compared with the rigid friction of the spring and the inner wall of the spiral, the elastic contact mode of the O-ring not only has a simpler structure, but also can greatly reduce the wear rate and improve the reliability. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a cross-sectional view of the overall structure in the embodiment.

[0011] Figure 2 It is Figure 1 An enlarged view of the structure at A in the middle.

[0012] Figure 3 It is a schematic view of the overall structure in the embodiment.

[0013] Figure 4 It is a schematic view of the structure of the fork in the embodiment.

[0014] Figure 5This is a cross-sectional view of the overall structure on the other side of the embodiment.

[0015] In the picture:

[0016] 1 - Fork 2 - Bead 3 - Spiral

[0017] 4 - Groove 5 - Guide Groove 6 - Protrusion

[0018] 7 - Annular groove; 8 - O-ring; 9 - Limiting protrusion. Detailed Implementation

[0019] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0020] It should be noted in advance that, in this utility model, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, in this utility model, unless otherwise explicitly specified and limited, "on" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features not in direct contact but through another feature between them.

[0021] like Figures 1 to 5 As shown, the three components of an environmentally friendly lipstick packaging based on an O-ring buffer structure include a fork 1, a bead 2 for holding the lipstick, and a spiral 3 fitted around the fork 1. The wall of the fork 1 has a groove 4 along its axial direction. The inner circumferential surface of the spiral 3 has a spiral guide groove 5. The bead 2 is placed in the fork 1. The outer circumferential surface of the bead 2 has a protrusion 6 that passes through the groove 4 and extends into the guide groove 5. When the fork 1 and the spiral 3 rotate relative to each other, the protrusion 6 moves along the groove 4 and the guide groove 5 to drive the bead 2 to rise and fall axially. The lower outer circumference of the fork 1 has at least one annular groove 7. An O-ring 8 made of elastic material is fitted in the annular groove. The bottom of the inner wall of the spiral 3 has an inwardly protruding limiting protrusion 9. The limiting protrusion 9 extends into the annular groove and presses against the outer circumferential surface of the O-ring 8. The elastic deformation of the O-ring 8 provides rotational damping and limits the axial displacement of the spiral 3 and the fork 1.

[0022] In the above structure, the number of annular grooves 7 is two, which are arranged in an upper and lower interval along the outer periphery of the lower part of the fork 1, and each annular groove 7 is respectively provided with an O-ring 8, and the bottom of the inner wall of the spiral 3 is provided with two limiting protrusions 9 for respectively pressing the two O-rings 4. The two O-rings 8 are arranged in an upper and lower interval, and are compressed by the limiting protrusions 9 at the same time when the spiral 3 rotates, forming double elastic damping. Compared with the single O-ring structure, the double O-rings share the pressure, avoid local overload, and the friction force is uniformly distributed along the axial direction of the spiral, which can significantly improve the smoothness and consistency of the rotation feeling.

[0023] As preferred, the fork 1, the bead 2 and the spiral 3 in the embodiment are all made of polypropylene or biobased plastic. Among them, polypropylene is a non-toxic and recyclable plastic, which can avoid the risk of metal ion pollution of the content paste in the traditional lipstick tube caused by aluminum plastic composite material; biobased plastic uses plant sources (such as corn starch and sugarcane) or microorganism synthesized degradable materials to reduce the use of petroleum-based plastic from the raw material end, and the product can be degraded through composting after being discarded.

[0024] The core of the utility model lies in that the elastic O-ring 8 embedded in the annular groove 7 of the lower part of the fork 1 and the elastic abutment of the limiting protrusion 9 at the bottom of the spiral 3 replace the traditional spring and thread structure: when rotating, the limiting protrusion 9 compresses the O-ring 8 to generate uniform friction damping, realizing oil-free smooth feeling; at the same time, the limiting protrusion 9 is clamped into the annular groove 7 to form hard limiting to prevent axial disengagement. The protrusion 6 of the bead 2 is linked along the fork slot 4 and the spiral guide groove 5 to drive the paste to rise and fall, and the overall structure relies on the synergistic effect of elastic deformation and mechanical linkage, and gives up the dependence on grease and glue. Through the full plasticization, oil-free and glue-free design, the environmental protection breakthrough is realized, the elastic damping of the O-ring replaces the traditional grease, and the pollution risk is eliminated; the double O-ring and the limiting protrusion cooperate to improve the axial stability, the uniformity of the rotation feeling is greatly improved compared with the spring scheme, and there is no wear and abnormal sound in long-term use, which is more in line with the green upgrading trend of cosmetic packaging.

[0025] In order to make the ordinary skilled in the art more conveniently understand the improvement of the utility model relative to the prior art, some drawings and descriptions of the utility model have been simplified, and the above embodiment is the preferred implementation scheme of the utility model, in addition to this, the utility model can also be realized in other ways, and any obvious replacement does not deviate from the technical scheme concept.

Claims

1. An environmentally friendly lipstick packaging inner three-piece set based on an O-ring buffer structure, comprising a fork (1), a bead (2) for holding the lipstick, and a spiral (3) fitted around the fork (1). The fork (1) has a groove (4) along its axial direction on its wall surface. The spiral (3) has a spiral guide groove (5) on its inner circumferential surface. The bead (2) is placed in the fork (1). The outer circumferential surface of the bead (2) has a protrusion (6) that passes through the groove (4) and extends into the guide groove (5). When the fork (1) and the spiral (3) rotate relative to each other, the protrusion (6) moves along the groove (4) and the guide groove (5) to drive the bead (2) to rise and fall axially. The characteristic feature is that: The lower outer periphery of the fork (1) is provided with at least one annular groove (7), and an O-ring (8) of elastic material is inserted in the annular groove. The bottom of the inner wall of the spiral (3) is provided with an inwardly protruding limiting protrusion (9). The limiting protrusion (9) extends into the annular groove (7) and presses against the outer peripheral surface of the O-ring (8). The elastic deformation of the O-ring (8) provides rotational damping and limits the axial displacement of the spiral (3) and the fork (1).

2. The three-piece inner packaging of an environmentally friendly lipstick based on an O-ring buffer structure according to claim 1, characterized in that: There are two annular grooves (7), which are spaced apart along the outer periphery of the lower part of the fork (1). Each annular groove (7) is fitted with an O-ring (8). The bottom of the inner wall of the spiral (3) is provided with two limiting protrusions (9) to press against the two O-rings (8) respectively.

3. The three-piece inner packaging of an environmentally friendly lipstick based on an O-ring buffer structure according to claim 1, characterized in that: The fork (1), bead (2) and spiral (3) are all made of polypropylene or bio-based plastic.

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