High-reliability PET pin shaft and cosmetic box

Abstract

The high-reliability PET pin shaft comprises a PET pin shaft body, a center hole penetrating through the whole center is formed in the middle of the PET pin shaft body, a side hole penetrating through the whole side portion is formed in one side of the PET pin shaft body, one side of the side hole is communicated with the atmosphere, and the other side of the side hole is communicated with the center hole. According to the PET pin shaft main body, the center hole and the side hole are formed, so that the PET pin shaft main body is further lightened, the PET pin shaft main body can be allowed to deform to a certain degree towards the position of the side hole, and within a certain degree, the deformation can depend on the self-recovery of the PET pin shaft main body, even if the PET pin shaft main body has certain elasticity, the PET pin shaft main body can not deform to a certain degree. Therefore, deformation and even breakage of the PET pin shaft main body caused by external force in the assembling process are effectively reduced, and the working reliability of the PET pin shaft main body is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the inside part design field of cosmetic box especially is related to a high reliability PET pin shaft. BACKGROUND

[0002] Many cosmetics, such as powder cakes, need to be stored in a cosmetic box, and a lid will be provided on the cosmetic box. The lid is usually hinged to the box body of the cosmetic box by a pin shaft, so that the lid can rotate on the box body to facilitate the opening and closing of the cosmetic box.

[0003] The above-mentioned pin shaft is now mostly made of metal. However, metal pins are heavy on one hand, and on the other hand, many cosmetic boxes are made of PET (polyethylene terephthalate) material. When recycling after subsequent disposal, the difference in materials increases the difficulty and cost of recycling.

[0004] To solve the above problems, PET pin shafts are now used instead of metal pin shafts to effectively reduce weight and better match the PET material of the cosmetic box. However, in actual use, it is found that the strength of the PET pin shaft is inferior to that of the metal pin shaft, and the fully solid PET pin shaft is rigid and difficult to recover after deformation, which causes the PET pin shaft to deform or even break during assembly due to external force, and the reliability is weak. SUMMARY

[0005] The utility model aims at providing a high-reliability PET pin shaft that can solve one or more of the above problems.

[0006] According to one aspect of the utility model, a high-reliability PET pin shaft is provided, which comprises a PET pin shaft body,

[0007] The middle part of the PET pin shaft body is provided with a center hole that penetrates the entire center, and one side of the PET pin shaft body is provided with a side hole that penetrates the entire side,

[0008] One side of the side hole is in communication with the atmosphere, and the other side is in communication with the center hole.

[0009] The beneficial effects of the high-reliability PET pin shaft are as follows: In the PET pin shaft body, the center hole and the side hole are provided to further lighten the PET pin shaft body and allow the PET pin shaft body to deform towards the side hole position. Within a certain range, the deformation can be restored by the PET pin shaft body itself, i.e., the PET pin shaft body can have a certain "elasticity", which effectively reduces the deformation or even breakage of the PET pin shaft body due to external force during assembly and improves the working reliability of the PET pin shaft body.

[0010] In some embodiments, the ratio of the maximum diameter of the cross section of the PET pin shaft body perpendicular to the axis thereof to the maximum diameter of the cross section of the central hole perpendicular to the axis thereof is 18-20:6.5-7.5. It has been tested that under the above parameters, the PET pin shaft body can still have high strength after the central hole is arranged.

[0011] In some embodiments, the ratio of the maximum diameter of the cross section of the central hole perpendicular to the axis thereof to the width of the side hole is 6.5-7.5:4.5-5.5. It has been tested that under the above parameters, the PET pin shaft body can still have high strength while being deformed to a certain extent after the central hole and the side hole are arranged.

[0012] In some embodiments, the other side of the PET pin shaft body is provided with a flat surface. The flat surface can reduce the contact area between the cosmetic box cover and the PET pin shaft body during use,

[0013] In some embodiments, the ratio of the maximum diameter of the cross section of the PET pin shaft body perpendicular to the axis thereof to the width of the flat surface is 18-20:8-9. It has been tested that under the above parameters, the PET pin shaft body can still have high strength.

[0014] In some embodiments, the two ends of the PET pin shaft body are respectively provided with chamfers. The chamfers can avoid the edges of the two ends of the PET pin shaft body being too sharp to damage other objects during use.

[0015] According to one aspect of the present application, a cosmetic box is provided, comprising a PET box body, a PET box cover and a high-reliability PET pin shaft, wherein the PET box cover is hinged to the PET box body by the high-reliability PET pin shaft.

[0016] The cosmetic box has the advantages that: in the cosmetic box, the PET box body, the PET box cover and the high-reliability PET pin shaft are made of the same material, which can effectively reduce the difficulty of recycling after being discarded and reduce the recycling cost, and the use of the high-reliability PET pin shaft can reduce the weight of the cosmetic box and effectively reduce the probability of deformation and damage of the PET pin shaft during assembly. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 2 is a structural schematic view of the high-reliability PET pin shaft according to an embodiment of the present application.

[0018] Figure 2 FIG. 2 is a structural schematic view of the high-reliability PET pin shaft according to an embodiment of the present application.

[0019] Figure 3The left view of the structure diagram of the high-reliability PET pin shaft is shown in the drawing.

[0020] Figure 4 The right view of the structure diagram of the high-reliability PET pin shaft is shown in the drawing.

[0021] In the drawing: 1. PET pin shaft body, 11. Center hole, 12. Side hole, 13. Plane, 14. Chamfer. DETAILED DESCRIPTION

[0022] The utility model will be described in further detail below with reference to the drawings.

[0023] Embodiment 1

[0024] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The high-reliability PET pin shaft of the embodiment comprises a PET pin shaft body 1.

[0025] The PET pin shaft body 1 can be made of PET (polyethylene terephthalate) material, and the center hole 11 is arranged in the middle part of the PET pin shaft body 1 and penetrates the PET pin shaft body 1, so that the central axis of the center hole 11 coincides with the central axis of the PET pin shaft body 1.

[0026] The ratio of the maximum diameter of the cross section of the PET pin shaft body 1 perpendicular to the central axis thereof to the maximum diameter of the cross section of the center hole 11 perpendicular to the central axis thereof should be 18-20:6.5-7.5. In the embodiment, the ratio of the maximum diameter of the cross section of the PET pin shaft body 1 perpendicular to the central axis thereof to the maximum diameter of the cross section of the center hole 11 perpendicular to the central axis thereof is 19:7, preferably, the maximum diameter B of the cross section of the PET pin shaft body 1 perpendicular to the central axis thereof is 19 mm, and the maximum diameter C of the cross section of the center hole 11 perpendicular to the central axis thereof is 7 mm.

[0027] In addition, the length of the PET pin shaft body 1 can be 88.4-92.4 mm, and in the embodiment, the length A of the PET pin shaft body 1 can be preferably 90.4 mm.

[0028] The PET pin shaft body 1 is further provided with a side hole 12 on one side thereof, the side hole 12 penetrates the entire side of the side, the central axis of the side hole 12 is parallel to the central axis of the PET pin shaft body 1, one side of the side hole 12 is connected with the atmosphere, and the other side of the side hole 12 is connected with the center hole 11 and communicates with the center hole 11.

[0029] The ratio of the maximum diameter of the cross section of the central hole 11 perpendicular to the axis thereof to the cross sectional width of the side hole 12 should be 6.5-7.5:4.5-5.5. In the present embodiment, the ratio of the maximum diameter of the cross section of the central hole 11 perpendicular to the axis thereof to the cross sectional width of the side hole 12 is 7:5, and when the maximum diameter C of the cross section of the central hole 11 perpendicular to the axis thereof is preferably 7 mm, the cross sectional width D of the side hole 12 is preferably 5 mm.

[0030] The other side of the PET pin shaft body 1 is provided with a flat surface 13.

[0031] The ratio of the maximum diameter of the cross section of the PET pin shaft body 1 perpendicular to the axis thereof to the width of the flat surface 13 should be 18-20:8-9, and in the present embodiment, the ratio of the maximum diameter of the cross section of the PET pin shaft body 1 perpendicular to the axis thereof to the width of the flat surface 13 is preferably 19:8.5, and when the maximum diameter B of the cross section of the PET pin shaft body 1 perpendicular to the axis thereof is preferably 19 mm, the width E of the flat surface 13 is preferably 8.5 mm.

[0032] The two ends of the PET pin shaft body 1 are respectively provided with chamfers 14, and the size of the chamfer can be preferably 1.5 mm*7 mm.

[0033] In the present PET pin shaft body 1, the central hole 11 and the side hole 12 are provided, so that the PET pin shaft body 1 is further lightened, and the PET pin shaft body 1 can allow a certain deformation towards the position of the side hole 12, and within a certain extent, the deformation can be restored by the PET pin shaft body 1 itself, i.e. the PET pin shaft body 1 can have a certain "elasticity", so as to effectively reduce the deformation or even breakage of the PET pin shaft body 1 due to external force during assembly, and improve the working reliability of the PET pin shaft body 1.

[0034] Embodiment 2

[0035] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 , the present embodiment is a cosmetic box, which comprises a PET box body, a PET box cover and the high-reliability PET pin shaft described in Embodiment 1. The PET box body and the PET box cover can be made of PET (polyethylene terephthalate) material, and the PET box body, the PET box cover and the high-reliability PET pin shaft are all made of the same material, so that when the cosmetic box is recycled, it is not necessary to specially separate the components, which can effectively reduce the difficulty of recycling after waste and reduce the recycling cost.

[0036] The PET box cover is hinged to the PET box body through the high-reliability PET pin shaft, preferably, a recess is arranged on one side of the PET box body, the high-reliability PET pin shaft is arranged in the recess, and a protrusion is arranged on the one side of the PET box body and rotatably sleeved on the high-reliability PET pin shaft.

[0037] Therefore, the PET box cover can rotate around the high-reliability PET pin shaft, so that the PET box body can be effectively opened and closed.

[0038] The above only describes some embodiments of the present application. For those skilled in the art, without departing from the inventive concept, a number of modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

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