Packaging container for coating material body

Abstract

The utility model discloses a packaging container for coating a material and relates to the technical field of product packaging, the packaging container for coating the material comprises an inner cylinder, a base, an inner cover and a discharging assembly, the inner cylinder is rotatably connected with the base, the inner cover is connected with the inner cylinder in a clamped mode, the discharging assembly is contained in the inner cylinder, and the discharging assembly is connected with the base in a clamped mode. The discharging assembly comprises a screw rod and a piston, the base is fixedly connected with the screw rod, and the screw rod is in threaded connection with the piston; the discharging assembly and the inner cylinder are matched to form a cavity used for containing a coating material, the piston is used for bearing the coating material, the inner cover is provided with a discharging part, and the piston can move in one direction in the axial direction relative to the screw rod, so that the coating material moves in the direction close to the discharging part. In this way, the inner barrel is rotationally connected with the base, the inner cover is clamped with the inner barrel, the packaging container is simple and compact in overall structure, the discharging amount can be adjusted in a one-way mode by rotating the inner barrel, and discharging controllability and accuracy are improved.

Description

Technical Field

[0001] This application relates to the technical field of product packaging, and particularly to a packaging container for a coating material body. Background Art

[0002] In the product packaging industry, existing rotatable discharging packaging containers often drive a screw rod to move up and down through a rotating base to achieve discharging. However, when users use them, it is difficult for the packaging container to control the discharging amount of the material during the process of rotating the base up and down by the user. Moreover, when the remaining amount of the material is small, the user needs to rotate the base multiple times to achieve discharging, resulting in low discharging efficiency. Summary of the Invention

[0003] The purpose of this application is to provide a packaging container for a coating material body in view of at least one of the above existing technical problems. Through the cooperation of the inner cylinder with the inner cover and the base respectively, the effect of one-way discharging is achieved, and the discharging efficiency of the packaging container for the coating material body is improved.

[0004] This application provides a packaging container for a coating material body, and the packaging container includes an inner cylinder, a base, an inner cover, and a discharging assembly.

[0005] The inner cylinder is rotatably connected to the base, the inner cover is snap-connected to the inner cylinder, the discharging assembly is accommodated in the inner cylinder, the discharging assembly includes a screw rod and a piston, the base is fixedly connected to the screw rod, and the screw rod is threadedly connected to the piston.

[0006] The discharging assembly and the inner cylinder cooperate to form a cavity for accommodating the coating material body. The piston is used to support the coating material body. The inner cover is provided with a discharging part. The piston can move axially in one direction relative to the screw rod, so that the coating material body moves in the direction close to the discharging part.

[0007] In a possible implementation manner, the discharging part is a discharging channel, and the base rotates in one direction relative to the inner cylinder to drive the piston to move in the direction close to the discharging channel.

[0008] In a possible implementation manner, the discharging channel penetrates through the top wall of the inner cover, and the discharging channel is an expanding structure along the discharging direction.

[0009] In a possible implementation manner, the discharging part includes a coating device and at least one discharging through hole. The coating device is connected to the discharging through hole. The inner cover is extended with a supporting ring, and the supporting ring is used for detachably connecting with the coating device.

[0010] In a possible implementation, the smearing device includes a smearing part and a connecting part. The smearing part is snap-connected to the discharge through hole. The smearing part is connected to the inner wall of the connecting part, and the outer wall of the connecting part is screwed to the supporting ring.

[0011] In a possible implementation, the inner cover bulges upward along the axial direction to form a supporting part. The discharge through hole is located at the top of the supporting part, and the smearing part covers the outer wall of the supporting part.

[0012] In a possible implementation, the screw rod includes an extending part. The extending part is located inside the supporting part, and the extending part has a clearance fit with the inner wall of the supporting part.

[0013] In a possible implementation, a plurality of ratchet teeth are provided inside the base, and at least one elastic piece is provided on the inner cylinder. The at least one elastic piece is engaged with the plurality of ratchet teeth so that the base can rotate unidirectionally relative to the inner cylinder.

[0014] In a possible implementation, at least one guiding rib is provided inside the base, and at least one guiding groove is provided on one side of the screw rod close to the base. The guiding rib can be snap-connected to the guiding groove so that the screw rod is fixedly connected to the base in a circumferential direction.

[0015] In a possible implementation, at least one set of anti-rotation strips is provided on the outer wall of the inner cylinder, and a plurality of limiting grooves are provided on the inner wall of the inner cover. The anti-rotation strips are engaged with the limiting grooves so that the inner cover is snap-connected to the inner cylinder.

[0016] In a possible implementation, the piston includes a sealing ring, a positioning ring and a driving ring. The screw rod includes at least one convex rib.

[0017] The sealing ring, the positioning ring and the driving ring are connected in sequence. The sealing ring is in sealing fit with the inner wall of the inner cylinder. The positioning ring is snap-connected to the at least one convex rib, and the driving ring is in threaded fit with the screw rod.

[0018] A packaging container for a coating material body provided by the present application has the following beneficial effects:

[0019] A packaging container for a coating dressing body provided by the present application. The packaging container for the coating dressing body includes an inner cylinder, a base, an inner lid, and a discharging assembly. The inner cylinder is rotatably connected to the base. The inner lid is snap-connected to the inner cylinder. The discharging assembly is disposed inside the inner cylinder. The discharging assembly includes a screw rod and a piston. The base is fixedly connected to the screw rod. The screw rod is threadedly connected to the piston. The discharging assembly and the inner cylinder cooperate to form a cavity for accommodating the coating dressing body. The piston is used to support the coating dressing body. The inner lid is provided with a discharging portion. The piston can move axially in one direction relative to the screw rod, so that the coating dressing body moves in a direction close to the discharging portion. In this way, the inner cylinder is rotatably connected to the base and the inner lid is snap-connected to the inner cylinder. The overall structure of the packaging container is simple and compact. Rotating the inner cylinder can adjust the discharging amount unidirectionally, improving the controllability and accuracy of discharging. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 An exploded view of a packaging container for a coating dressing body provided by an embodiment of the present application;

[0022] Figure 2 A schematic structural diagram of an inner cylinder provided by an embodiment of the present application;

[0023] Figure 3 A schematic structural diagram of a base provided by an embodiment of the present application;

[0024] Figure 4(a) is a cross-sectional view of a packaging container for a coating dressing body provided by an embodiment of the present application;

[0025] Figure 4(b) is a cross-sectional view of a packaging container for a coating dressing body provided by an embodiment of the present application;

[0026] Figure 5(a) is a cross-sectional view of another packaging container for a coating dressing body provided by an embodiment of the present application;

[0027] Figure 5(b) is a cross-sectional view of another packaging container for a coating dressing body provided by an embodiment of the present application;

[0028] Figure 6(a) is a cross-sectional view of another packaging container for a coating dressing body provided by an embodiment of the present application;

[0029] Figure 6(b) is a cross-sectional view of another packaging container for a coating dressing body provided by an embodiment of the present application;

[0030] Figure 7(a) is a cross-sectional view of another packaging container for a coating dressing body provided by an embodiment of the present application;

[0031] Figure 7(b) is a cross-sectional view of another packaging container for a coating dressing body provided by an embodiment of the present application;

[0032] Figure 8(a) is a cross-sectional view of another packaging container for a coating dressing body provided by an embodiment of the present application;

[0033] Figure 8(b) is a cross-sectional view of another packaging container for a coating dressing body provided by an embodiment of the present application;

[0034] Figure 9(a) is a cross-sectional view of another packaging container for a coating dressing body provided by an embodiment of the present application;

[0035] Figure 9(b) is a cross-sectional view of another packaging container for a coating dressing body provided by an embodiment of the present application;

[0036] Figure 10 is a schematic structural diagram of a sealing plug provided by an embodiment of the present application;

[0037] Figure 11 is a schematic structural diagram of a screw provided by an embodiment of the present application.

[0038] The following is a supplementary description of the drawings:

[0039] 1. Inner cylinder; 11. Anti-rotation strip; 12. Elastic piece; 2. Base; 21. Ratchet teeth; 22. Guide rib; 3. Inner cover; 31. Discharge channel; 32. Coating device; 321. Coating part; 322. Connection part; 33. Discharge through hole; 34. Supporting ring; 35. Supporting part; 4. Discharge assembly; 41. Screw; 411. Guide groove; 412. Limiting rib; 413. Extension part; 414. Convex rib; 42. Piston; 421. Sealing ring; 422. Positioning ring; 423. Driving ring; 5. Outer cover; 51. Sealing column. Detailed implementation manners

[0040] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0041] As used herein, the term "one embodiment" or "embodiment" refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present application. In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. Moreover, the terms "first", "second", etc. are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0042] The following introduces a packaging container for a coating material body provided by an embodiment of the present application with reference to the accompanying drawings. The packaging container for the coating material body of the present application is particularly suitable for the scenario of discharging the coating material body.

[0043] Please refer to Figures 1 - 3 , an embodiment of the present application provides a packaging container for a coating material body. The packaging container includes an inner cylinder 1, a base 2, an inner lid 3, and a discharging assembly 4. The inner cylinder 1 is rotatably connected to the base 2, the inner lid 3 is snap-connected to the inner cylinder 1, the discharging assembly 4 is disposed inside the inner cylinder 1, the discharging assembly 4 includes a screw 41 and a piston 42, the base 2 is fixedly connected to the screw 41, and the screw 41 is threadedly connected to the piston 42; the discharging assembly 4 and the inner cylinder 1 cooperate to form a cavity for accommodating the coating material body, the piston 42 is used to support the coating material body, the inner lid 3 is provided with a discharging portion, and the piston 42 can move axially in one direction relative to the screw 41, so as to move the coating material body in the direction close to the discharging portion. Thus, the inner cylinder 1 is rotatably connected to the base 2 and the inner lid 3 is snap-connected to the inner cylinder 1, the overall structure of the packaging container is simple and compact, and the discharging amount can be adjusted unidirectionally by rotating the inner cylinder 1, improving the controllability and accuracy of discharging.

[0044] It can be understood that the packaging container for the coating material body is a component specifically designed to carry and use the coating material body, and has the functions of loading the coating material body, protecting the coating material body from contamination, providing structural support, and facilitating the use of the product. In the embodiment of the present application, the coating material body can be in the form of liquid, powder, paste, or cream, etc. On the other hand, the coating material body can be makeup or skin care products.

[0045] Specifically, the piston 42 is assembled from the top of the inner cylinder 1 into the interior of the inner cylinder 1, the screw rod 41 is assembled from the bottom of the inner cylinder 1 into the interior of the inner cylinder 1, the inner cover 3 is sleeved on the inner cylinder 1, the inner diameter of the inner cover 3 is larger than the outer diameter of the inner cylinder 1 that mates with the inner cover 3, the base 2 is fixedly connected to the screw rod 41 so that the base 2 is connected to the inner cylinder 1, and the user rotates the base 2, and then the inner cylinder 1 rotates relative to the base 2, and the piston 42 of the discharging assembly 4 pushes the coating material body to move in the direction close to the discharging part. During the discharging process, the discharging assembly 4 is accommodated in the inner cylinder 1, the user rotates the base 2 to drive the screw rod 41 to rotate, and the piston 42 moves axially in one direction relative to the screw rod 41 to extrude the coating material body to discharge from the discharging part. Among them, the base 2 is exposed within the user's field of vision.

[0046] Specifically, the thread on the outer wall of the screw rod 41 mates with the thread on the inner wall of the piston 42, one end of the screw rod 41 is connected to the base 2, wherein the length of the screw rod 41 is less than the length of the inner cylinder 1, the piston 42 is a cylindrical piston 42, and the outer diameter of the piston 42 closely fits with the inner diameter of the inner cylinder 1 to ensure that the piston 42 can drive the coating material body to move along the axial direction of the screw rod 41 when the screw rod 41 rotates.

[0047] Specifically, when the piston 42 is located at the bottom of the inner cylinder 1, the volume of the cavity formed by the piston 42 and the inner cover 3 is greater than or equal to the volume of the coating material body. In one embodiment, the volume of the coating material body is 11.5 ml - 12.5 ml.

[0048] In one embodiment, the packaging container of the coating material body further includes an outer cover 5. The outer cover 5 is used in cooperation with the inner cover 3 to form a sealing structure. The outer cover 5 is used to snap onto the base 2 to maintain the freshness and activity of the coating material body and extend the shelf life of the coating material body. In the state where the outer cover 5 and the inner cover 3 are snapped together, the inner cover 3 and the outer cover 5 are in clearance fit. In one possible implementation manner, the outer cover 5 is snap-connected to the base 2; in another possible implementation manner, the outer cover 5 is magnetically coupled with the base 2.

[0049] In one embodiment, as shown in FIGS. 4(a) and 4(b), the discharging part is a discharging channel 31, and the base 2 rotates unidirectionally relative to the inner cylinder 1 to drive the piston 42 to move in the direction close to the discharging channel 31. By the unidirectional rotation of the base 2, the movement of the piston 42 is controlled, and the coating material body is discharged through the discharging channel 31 in a controlled manner, avoiding the one-time discharge of the coating material body, and improving the safety and consistency of product use.

[0050] Specifically, the discharging part is selected as the discharging channel 31, and the coating material body is a liquid with a relatively high viscosity, such as lip gloss, cream, etc. The discharging channel 31 is provided at the top of the inner cover 3, and a sealing column 51 that mates with the discharging channel 31 is provided on the outer cover 5 that mates with the inner cover 3. The sealing column 51 is used for sealing cooperation with the discharging channel 31.

[0051] Specifically, when in use, the user rotates or pulls up the outer cover 5, and the sealing column 51 is pulled out from the discharge hole to use the coating material body. After the user finishes using, the outer cover 5 is covered again to insert the sealing column 51 into the discharge hole again to ensure the sealing effect.

[0052] Specifically, the discharge channel 31 penetrates through the top wall of the inner cover 3, and the discharge channel 31 is an expanding structure along the discharge direction. In this way, the expanding structure of the discharge channel 31 helps to prevent the coating material body from accumulating or blocking in the discharge channel 31, ensuring smooth discharge of the coating material body during the discharge process.

[0053] Specifically, when the piston 42 pushes the coating material body, the coating material body is under pressure and is thus pushed towards the discharge channel 31. In the initial stage, the coating material body discharges through the smaller discharge channel 31. As the cross-sectional area of the discharge channel 31 increases, the pressure of the coating material body is distributed on the discharge channel 31 with a larger cross-sectional area. According to Bernoulli's law, when the discharge channel 31 expands, the pressure on the coating material body decreases, and the flow rate of the coating material body becomes more stable.

[0054] In one possible implementation, the discharge channel 31 is a conical discharge channel 31; in one possible implementation, the discharge channel 31 is a funnel-shaped discharge channel 31.

[0055] Specifically, the difference between the inner diameter of the discharge channel 31 on the side close to the outer cover 5 and the inner diameter on the side far from the outer cover 5 is 0.01 mm - 5 mm.

[0056] In one embodiment, the inner diameter of the discharge channel 31 on the side close to the outer cover 5 is 5 mm, while the inner diameter on the side far from the outer cover 5 is 3 mm.

[0057] Further, as shown in FIGS. 5(a) and 5(b), the discharge part includes an application device 32 and at least one discharge through-hole 33. The application device 32 is connected to the discharge through-hole 33. The inner cover 3 is extended with a supporting ring 34, and the supporting ring 34 is used for detachably connecting with the application device 32. By connecting the application device 32 with the discharge through-hole 33, the coating material body can be evenly distributed on the application surface through the application device 32 after discharging from the discharge through-hole 33, reducing the unevenness of manual application and improving the use effect.

[0058] Specifically, the discharge part selects the discharge through-hole 33 and the application device 32. The coating material body is a liquid with a relatively low viscosity, such as liquid foundation or blush, etc. The coating material body is evenly applied on the target surface. The supporting ring 34 is integrally formed with the inner cover 3. In this embodiment, the inner cover 3 extends in a direction away from the inner cylinder 1 at its top to form a circumferential side wall to form the supporting ring 34 for fixing the application device 32. The inner diameter of the supporting ring 34 is greater than or equal to the outer diameter of the bottom of the application device 32.

[0059] Specifically, in the case where there are multiple discharge through-holes 33, the apertures of the discharge through-holes 33 are consistent.

[0060] Specifically, the coating device 32 includes a coating part 321 and a connecting part 322. The coating part 321 is snap-connected to the discharge through-hole 33. The coating part 321 is connected to the inner wall of the connecting part 322, and the outer wall of the connecting part 322 is screwed to the supporting ring 34. In this way, the coating part 321 in the coating device 32 is connected to the discharge through-hole 33 by a snap connection method to ensure that the coating part 321 will not fall off during use, ensuring the stability and safety of the packaging container structure. The outer wall of the connecting part 322 is screwed to the supporting ring 34 to form a reliable sealing structure, preventing the coating material from leaking at the connection and maintaining the sealing performance of the packaging container.

[0061] Specifically, the connecting part 322 is made of polypropylene (PP). The material of the connecting part 322 is the same as that of the supporting ring 34. The coating part 321 and the connecting part 322 are adhesively connected. The connecting part 322 and the supporting ring 34 are detachably connected.

[0062] Optionally, the coating part 321 can be a brush head, a ball, a sponge head, etc.

[0063] In one embodiment, as shown in FIGS. 5(a) and 5(b), the coating part 321 is a circular coating part 321; in another embodiment, as shown in FIGS. 6(a) and 6(b), the coating part 321 is an obliquely cut coating part 321; in another embodiment, as shown in FIGS. 7(a) and 7(b), the coating part 321 is a flat coating part 321; in another embodiment, as shown in FIGS. 8(a) and 8(b), the coating part 321 is a pointed coating part 321. The material of the coating part 321 is nitrile butadiene rubber (NBR), and the NBR material has excellent oil resistance and wear resistance; in another embodiment, as shown in FIGS. 9(a) and 9(b), the coating part 321 is an arc-shaped coating part 321. The material of the coating part 321 is polybutylene terephthalate (PBT). The PBT material has good flexibility and elasticity; the water absorption of the PBT material is very low, which can dry quickly and prevent bacteria from growing.

[0064] In one possible implementation, the material of the coating part 321 is polypropylene (PP); in one possible implementation, the material of the coating part 321 is polyethylene (PE).

[0065] In one embodiment, the inner lid 3 axially protrudes upward to form a supporting part 35. The discharge through-hole 33 is located at the top of the supporting part 35, and the coating part 321 covers the outer wall of the supporting part 35. In this way, the supporting part 35 increases the structural strength around the discharge through-hole 33. The discharge through-hole 33 is located at the top of the supporting part 35, so that the coating material is accurately extruded from a higher position, effectively avoiding the diffusion or flow of the coating material body, and improving the accuracy and controllability of coating.

[0066] In one embodiment, the support portion 35 is arranged as a cylindrical structure. In the case where the support portion 35 exists, the length of the screw rod 41 is greater than the height of the inner cylinder 1. The screw rod 41 is in clearance fit with the discharge through hole 33 to reduce the coating material body remaining in the gap between the piston 42 and the support portion 35.

[0067] Specifically, the screw rod 41 includes an extension portion 413. The extension portion 413 is located inside the support portion 35, and the extension portion 413 is in clearance fit with the inner wall of the support portion 35. In this way, during the discharging process, the screw rod 41 and the piston 42 move stably, and uneven discharging will not occur due to too large or too small a gap. The discharging process is controllable and the discharging amount is uniform.

[0068] Specifically, the outer diameter of the extension portion 413 is smaller than the inner diameter of the support portion 35, the length of the extension portion 413 is smaller than the length of the support portion 35, and the lengths of the extension portion 413 and the support portion 35 are both smaller than the length of the coating device 32.

[0069] In a possible implementation manner, the extension portion 413 and the screw rod 41 other than the extension portion 413 are integrally formed, and the extension portion 413 is also provided with threads; in another possible implementation manner, the extension portion 413 is not provided with threads, and the outer wall of the extension portion 413 is smooth.

[0070] Further, a plurality of ratchet teeth 21 are arranged inside the base 2, and at least one elastic piece 12 is arranged on the inner cylinder 1. The at least one elastic piece 12 is engaged with the plurality of ratchet teeth 21 so that the base 2 can rotate unidirectionally relative to the inner cylinder 1. In this way, the engagement of the ratchet teeth 21 and the elastic piece 12 enables the base 2 to rotate only in one direction, preventing the coating material body from retreating due to reverse operation and improving the discharging efficiency.

[0071] Specifically, at least one elastic piece 12 is arranged on the outer wall of the inner sleeve, and the ratchet teeth 21 are arranged inside the base 2. When the inner cylinder 1 is inserted into the base 2, the elastic piece 12 slides along the axial direction of the inner cylinder 1 to the inner wall of the base 2 and cooperates with the ratchet teeth 21. The elastic piece 12 will generate elastic deformation when contacting the ratchet teeth 21. After the elastic piece 12 slides over the apex of the ratchet teeth 21, the elastic piece 12 will return to its original state and be stuck in the groove of the ratchet teeth 21 to form an engagement. The engagement of the ratchet teeth 21 and the elastic piece 12 enables the elastic piece 12 to slide over the ratchet teeth 21 only in a preset direction. When the elastic piece 12 moves in the opposite direction of the preset direction, the elastic piece 12 will be blocked by the ratchet teeth 21 to form a one-way lock.

[0072] Specifically, a plurality of ratchets 21 are evenly arranged in the base 2. The ratchet 21 is a trapezoidal protrusion, a triangular protrusion or other shapes capable of engaging with the elastic piece 12. The ratchets 21 are evenly distributed on the inner wall of the base 2 and arranged along the axial direction of the inner cylinder 1. There is a preset distance between each ratchet 21 to ensure that the elastic piece 12 can engage with the ratchet 21 at different positions. The preset distance of the ratchet 21 is positively correlated with the discharge amount of the dressing body.

[0073] Specifically, the elastic piece 12 is made of an elastic material. In one possible implementation, the material of the elastic piece 12 is a metal material; in another possible implementation, the material of the elastic piece 12 is a plastic material.

[0074] In this embodiment, two elastic pieces 12 are arranged on the outer wall of the inner cylinder 1 close to the base 2 and cooperate with the evenly arranged ratchets 21.

[0075] Specifically, when the elastic piece 12 rotates relative to the ratchet 21, it will generate feedback to prompt the user. In one embodiment, the feedback generated when the elastic piece 12 rotates relative to the ratchet 21 is a clicking sound.

[0076] Further, at least one guiding rib 22 is arranged in the base 2, and at least one guiding groove 411 is arranged on the side of the screw 41 close to the base 2. The guiding rib 22 can be engaged with the guiding groove 411 to radially fixedly connect the screw 41 and the base 2. Through the engagement of the guiding rib 22 and the guiding groove 411, the screw 41 and the base 2 are fixedly connected, preventing the screw 41 from displacing during rotation or operation, avoiding radial shaking, and simplifying the assembly process, thereby maintaining the stability of the packaging container.

[0077] Specifically, the height and width of the guiding rib 22 match the guiding groove 411 on the screw 41, and the width of the guiding rib 22 is smaller than the width of the guiding groove 411.

[0078] In one embodiment, the guiding ribs 22 are evenly arranged in the base 2, thereby improving the stability of the base 2. The guiding grooves 411 should be evenly arranged on the screw 41 to ensure stable engagement between the screw 41 and the base 2. During the assembly process, when inserting the screw 41 into the base 2, align the guiding groove 411 on the screw 41 with the guiding rib 22 in the base 2 to ensure that the guiding rib 22 slides into the guiding groove 411, and the screw 41 remains in a state of engagement with the base 2 during rotation.

[0079] Specifically, as Figure 11 shown, a plurality of limiting ribs 412 are arranged on the screw 41, and adjacent limiting ribs 412 form the guiding groove 411. The limiting ribs 412 are evenly arranged on the screw 41.

[0080] Furthermore, at least one set of anti-rotation strips 11 is provided on the outer wall of the inner cylinder 1, and a plurality of limiting grooves are provided on the inner wall of the inner cover 3. The anti-rotation strips 11 cooperate with the limiting grooves to snap the inner cover 3 to the inner cylinder 1. Through the cooperation between the anti-rotation strips 11 on the outer wall of the inner cylinder 1 and the limiting grooves on the inner wall of the inner cover 3, relative rotation between the inner cover 3 and the inner cylinder 1 is prevented, ensuring that the inner cover 3 remains fixed during use, providing better stability, and thus precisely controlling the discharge amount.

[0081] Specifically, the anti-rotation strips 11 on the outer wall of the inner cylinder 1 are raised strip-shaped structures. The anti-rotation strips 11 extend along the axial direction of the outer wall of the inner cylinder 1. A plurality of limiting grooves are provided on the inner wall of the inner cover 3. The limiting grooves extend along the axial direction of the inner wall of the inner cover 3. The shape and size of the limiting grooves match the shape and size of the anti-rotation strips 11.

[0082] Specifically, during the assembly process, when the inner cylinder 1 and the inner cover 3 are in cooperation, the positions of the anti-rotation strips 11 and the limiting grooves match, and the anti-rotation strips 11 are aligned with the limiting grooves one by one. After the inner cylinder 1 is inserted into the inner cover 3, the anti-rotation strips 11 slide into the limiting grooves and are tightly snapped with the limiting grooves. After the inner cylinder 1 and the inner cover 3 are assembled, the anti-rotation strips 11 are embedded in the limiting grooves to form a mechanical lock. The inner cylinder 1 is relatively stationary with respect to the inner cover 3. When the inner cylinder 1 is subjected to a rotational force, the anti-rotation strips 11 will be blocked by the limiting grooves, thereby preventing the inner cylinder 1 from rotating.

[0083] Specifically, the number of limiting grooves is greater than or equal to the number of anti-rotation strips 11. One set of anti-rotation strips 11 includes at least two anti-rotation strips 11, and each set of anti-rotation strips 11 is evenly arranged on the inner cylinder 1.

[0084] In a possible implementation, the length of the anti-rotation strips 11 is greater than or equal to the length of the limiting grooves; the length of the anti-rotation strips 11 is less than the length of the limiting grooves.

[0085] Furthermore, as Figure 10 shown, the piston 42 includes a sealing ring 421, a positioning ring 422, and a driving ring 423. The screw 41 includes at least one convex rib 414. The sealing ring 421, the positioning ring 422, and the driving ring 423 are connected in sequence. The sealing ring 421 is in sealing cooperation with the inner wall of the inner cylinder 1. The positioning ring 422 is snapped with at least one convex rib 414. The driving ring 423 is in threaded cooperation with the screw 41. In this way, the sealing ring 421 of the piston 42 is in sealing cooperation with the inner wall of the inner cylinder 1 to ensure that there is no leakage when pushing the coating material body.

[0086] Specifically, the positioning ring 422 is arranged between the sealing ring 421 and the driving ring 423, the sealing ring 421 is arranged on the side close to the discharge direction, and the driving ring 423 is arranged on the side close to the base 2 direction, the driving ring 423 is clamped with the positioning ring 422, and the positioning ring 422 is provided with an upwardly protruding positioning portion, the sealing ring 421 includes a first through hole, and the positioning portion cooperates with the first through hole to enable the positioning ring 422 to be clamped and cooperated with the sealing ring 421. In this embodiment, the screw 41 is provided with two ridges 414, the positioning ring 422 includes a second through hole, the two ridges 414 are engaged with the second through hole, the driving ring 423 includes a third through hole, the inner wall of the third through hole is provided with a thread, and the screw 41 is threadedly engaged with the third through hole.

[0087] Specifically, the piston 42 is made of a highly elastic and wear-resistant material. In one embodiment, the piston 42 is made of NBR material.

[0088] The following describes the assembly process of the packaging container of the coating material body in combination with a specific application scenario, which exemplarily includes:

[0089] First, place the screw 41 and the piston 42 inside the inner tube 1, engage the guide ridge 22 of the screw 41 with the guide groove 411 of the base 2, and rotate the piston 42 to the preset position of the screw 41.

[0090] Then, the inner cover 3 is buckled with the inner cylinder 1, and the limiting groove of the inner cover 3 cooperates with the anti-rotation strip 11 of the inner cylinder 1 to make the inner cover 3 and the inner cylinder 1 snap together;

[0091] Afterwards, the base 2 is rotated, and the base 2 drives the screw 41 to rotate, and the piston 42 accommodated in the inner cylinder 1 moves radially in a single direction toward the top of the inner cover 3 to push the coating material to be discharged from the discharge portion;

[0092] Finally, after use, the outer cover 5 and the inner cover 3 are buckled together.

[0093] The packaging container of the coating material body in the embodiment of the present application can significantly improve the discharge effect of the coating material body.

[0094] The following describes specific embodiments of the present application based on the above technical solutions.

[0095] Example 1

[0096] See Figures 1 to 3, Embodiment 1 provides a packaging container for a coating body. The packaging container includes an inner cylinder 1, a base 2, an inner lid 3, and a discharging component 4. The inner cylinder 1 is rotatably connected to the base 2, the inner lid 3 is snap-fitted to the inner cylinder 1, and the discharging component 4 is disposed inside the inner cylinder 1. The discharging component 4 includes a screw 41 and a piston 42. The base 2 is fixedly connected to the screw 41, and the screw 41 is threadedly connected to the piston 42. The discharging component 4 and the inner cylinder 1 cooperate to form a cavity for accommodating the coating body. The piston 42 is used to support the coating body. The inner lid 3 is provided with a discharging portion, and the piston 42 can move axially in one direction relative to the screw 41, thereby moving the coating body in the direction close to the discharging portion.

[0097] The packaging container for the coating body further includes an outer lid 5. The outer lid 5 is used in cooperation with the inner lid 3 to form a sealing structure. The outer lid 5 is used to snap onto the base 2 to maintain the freshness and activity of the coating body and extend the shelf life of the coating body. In the state where the outer lid 5 is snapped onto the inner lid 3, the inner lid 3 and the outer lid 5 are in clearance fit.

[0098] The discharging portion is a discharging channel 31. The base 2 rotates in one direction relative to the inner cylinder 1 to drive the piston 42 to move in the direction close to the discharging channel 31. The discharging channel 31 penetrates through the top wall of the inner lid 3. The discharging channel 31 is an expanding structure along the discharging direction. The coating body is a liquid with a relatively high viscosity, such as lip gloss, and the volume of the lip gloss is 12 ml. The inner diameter of the discharging channel 31 on the side close to the outer lid 5 is 5 mm, while the inner diameter on the side far from the outer lid 5 is 3 mm.

[0099] A plurality of ratchet teeth 21 are provided inside the base 2. The inner cylinder 1 is provided with at least one elastic piece 12. At least one elastic piece 12 meshes with the plurality of ratchet teeth 21 so that the base 2 can rotate in one direction relative to the inner cylinder 1. The plurality of ratchet teeth 21 are evenly arranged inside the base 2. Two elastic pieces 12 are provided on the outer wall of the inner cylinder 1 close to the base 2 and cooperate with the evenly arranged ratchet teeth 21. When the elastic piece 12 rotates relative to the ratchet tooth 21, feedback will be generated to prompt the user. In one embodiment, the feedback generated when the elastic piece 12 rotates relative to the ratchet tooth 21 is a clicking sound.

[0100] At least one guiding rib 22 is provided inside the base 2, and at least one guiding groove 411 is provided on the side of the screw 41 close to the base 2. The guiding rib 22 can be clamped with the guiding groove 411 so that the screw 41 is fixedly connected to the base 2 in a circumferential direction. At least one set of anti-rotation strips 11 is provided on the outer wall of the inner cylinder 1, and a plurality of limiting grooves are provided on the inner wall of the inner cover 3. The anti-rotation strips 11 cooperate with the limiting grooves so that the inner cover 3 is clamped with the inner cylinder 1. During the assembly process, when the inner cylinder 1 and the inner cover 3 are matched, the positions of the anti-rotation strips 11 and the limiting grooves are matched, and the anti-rotation strips 11 are aligned with the limiting grooves one by one. After the inner cylinder 1 is inserted into the inner cover 3, the anti-rotation strips 11 slide into the limiting grooves and are tightly clamped with the limiting grooves. After the inner cylinder 1 and the inner cover 3 are assembled, the anti-rotation strips 11 are embedded in the limiting grooves to form a mechanical lock. The inner cylinder 1 is relatively stationary with respect to the inner cover 3. When the inner cylinder 1 is subjected to a rotational force, the anti-rotation strips 11 will be blocked by the limiting grooves, thereby preventing the inner cylinder 1 from rotating.

[0101] When the user uses it, the user rotates or pulls up the outer cover 5, and the sealing column 51 is pulled out of the discharge hole to use the coating material body. After the user finishes using it, the outer cover 5 is covered again to make the sealing column 51 inserted into the discharge hole again to ensure the sealing effect.

[0102] Embodiment 2

[0103] The difference between Embodiment 2 and Embodiment 1 is that it further includes a coating part 321. The common points between Embodiment 2 and Embodiment 1 will not be elaborated here, and only the differences between Embodiment 2 and Embodiment 1 will be described.

[0104] In Embodiment 2, the discharge part selects a discharge through hole 33 and a coating device 32. The coating material body is a liquid with a relatively low viscosity, such as liquid foundation or blush, etc. The coating material body is evenly coated on the target surface through the coating device 32.

[0105] The discharge part includes a coating device 32 and at least one discharge through hole 33. The coating device 32 is connected to the discharge through hole 33. The inner cover 3 is extended with a supporting ring 34, and the supporting ring 34 is used for detachably connecting with the coating device 32. The coating material body is a liquid with a relatively low viscosity, such as liquid foundation or blush, etc. The coating material body is evenly coated on the target surface. The supporting ring 34 is integrally formed with the inner cover 3. In this embodiment, the inner cover 3 extends along the direction away from the inner cylinder 1 at its top to form a side wall to form a supporting ring 34 for fixing the coating device 32. The inner diameter of the supporting ring 34 is greater than or equal to the outer diameter of the bottom of the coating device 32.

[0106] Referring to FIGS. 5(a) to 9(b), the coating device 32 includes a coating part 321 and a connecting part 322. The coating part 321 is snap-connected to the discharge through-hole 33. The coating part 321 is connected to the inner wall of the connecting part 322, and the outer wall of the connecting part 322 is screwed to the supporting ring 34. The connecting part 322 is made of polypropylene (PP), and the material of the connecting part 322 is the same as that of the supporting ring 34. The coating part 321 and the connecting part 322 are adhesively connected. The connecting part 322 is detachably connected to the supporting ring 34.

[0107] Example 3

[0108] The difference between Example 3 and Example 1 is that the inner cover 3 is provided with a supporting part 35. The common points between Example 3 and Example 1 will not be described here again. Only the differences between Example 3 and Example 1 will be described.

[0109] Referring to FIGS. 5(a) and 5(b), the inner cover 3 bulges upward along the axis to form a supporting part 35. The discharge through-hole 33 is located at the top of the supporting part 35, and the coating part 321 covers the outer wall of the supporting part 35. The supporting part 35 is set as a cylindrical structure. In the case of the existence of the supporting part 35, the length of the screw rod 41 is greater than the height of the inner cylinder 1. The screw rod 41 is in clearance fit with the discharge through-hole 33 to reduce the coating material body staying in the gap between the piston 42 and the supporting part 35. The screw rod 41 includes an extension part 413. The extension part 413 is located inside the supporting part 35, and the extension part 413 is in clearance fit with the inner wall of the supporting part 35.

[0110] Example 4

[0111] The difference between Example 4 and Example 1 is the piston 42. The common points between Example 4 and Example 1 will not be described here again. Only the differences between Example 4 and Example 1 will be described.

[0112] As Figure 10 shown, the piston 42 includes a sealing ring 421, a positioning ring 422 and a driving ring 423. The screw rod 41 includes at least one convex rib 414. The sealing ring 421, the positioning ring 422 and the driving ring 423 are connected in sequence. The sealing ring 421 is in sealing fit with the inner wall of the inner cylinder 1. The positioning ring 422 is snap-connected to at least one convex rib 414, and the driving ring 423 is in threaded fit with the screw rod 41.

[0113] The positioning ring 422 is arranged between the sealing ring 421 and the driving ring 423. The sealing ring 421 is arranged on the side close to the discharging part direction, and the driving ring 423 is arranged on the side close to the base 2. The driving ring 423 is clamped with the positioning ring 422. The positioning ring 422 is provided with an upward convex positioning part. The sealing ring 421 includes a first through hole. The positioning part is matched with the first through hole so that the positioning ring 422 is clamped and matched with the sealing ring 421. In this embodiment, the screw 41 is provided with two convex ribs 414. The positioning ring 422 includes a second through hole. The two convex ribs 414 are engaged with the second through hole. The driving ring 423 includes a third through hole. The inner wall of the third through hole is provided with threads. The screw 41 is in threaded cooperation with the third through hole

[0114] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application

Claims

1. A packaging container for a dressing body, characterized in that, The packaging container includes an inner cylinder (1), a base (2), an inner lid (3), and a discharging assembly (4). The inner cylinder (1) is rotatably connected to the base (2), the inner lid (3) is snap-connected to the inner cylinder (1), the discharging assembly (4) is disposed inside the inner cylinder (1), the discharging assembly (4) includes a screw rod (41) and a piston (42), the base (2) is fixedly connected to the screw rod (41), and the screw rod (41) is threadedly connected to the piston (42). The discharging assembly (4) and the inner cylinder (1) cooperate to form a cavity for accommodating the coating dressing body, the piston (42) is used to support the coating dressing body, the inner lid (3) is provided with a discharging portion, and the piston (42) can move axially in one direction relative to the screw rod (41), so that the coating dressing body moves in the direction close to the discharging portion. The discharging portion is a discharging channel (31), and the base (2) rotates in one direction relative to the inner cylinder (1) to drive the piston (42) to move in the direction close to the discharging channel (31). The discharging portion includes an applying device (32) and at least one discharging through hole (33), the applying device (32) is connected to the discharging through hole (33), and the inner lid (3) is extended with a supporting ring (34), and the supporting ring (34) is used for detachably connecting to the applying device (32).

2. The packaging container for the coating dressing body according to claim 1, characterized in that, The discharging channel (31) penetrates through the top wall of the inner lid (3), and the discharging channel (31) is of an expanding structure along the discharging direction.

3. The packaging container for the coating material body according to claim 2, characterized in that, The applying device (32) includes an applying portion (321) and a connecting portion (322), the applying portion (321) is snap-connected to the discharging through hole (33), the applying portion (321) is connected to the inner wall of the connecting portion (322), and the outer wall of the connecting portion (322) is threadedly connected to the supporting ring (34).

4. The packaging container for the coating body according to claim 3, characterized in that, The inner lid (3) protrudes upward axially to form a supporting portion (35), the discharging through hole (33) is located at the top end of the supporting portion (35), and the applying portion (321) covers the outer wall of the supporting portion (35).

5. The packaging container for the coating body according to claim 4, characterized in that, The screw rod (41) includes an extending portion (413), the extending portion (413) is located inside the supporting portion (35), and the extending portion (413) has a clearance fit with the inner wall of the supporting portion (35).

6. The packaging container for the coating body according to claim 1, characterized in that, A plurality of ratchet teeth (21) are disposed inside the base (2), at least one elastic piece (12) is disposed on the inner cylinder (1), and the at least one elastic piece (12) engages with the plurality of ratchet teeth (21) so that the base (2) can rotate in one direction relative to the inner cylinder (1).

7. The packaging container for the coating body according to claim 1, characterized in that, At least one guiding rib (22) is disposed inside the base (2), at least one guiding groove (411) is disposed on one side of the screw rod (41) close to the base (2), and the guiding rib (22) can be snap-connected to the guiding groove (411) so that the screw rod (41) is fixedly connected to the base (2) in a circumferential direction.

8. The packaging container for the coating body according to claim 1, characterized in that, At least one set of anti-rotation strips (11) is provided on the outer wall of the inner cylinder (1), and a plurality of limiting grooves are provided on the inner wall of the inner cover (3). The anti-rotation strips (11) cooperate with the limiting grooves to enable the inner cover (3) to be clamped with the inner cylinder (1).

9. The packaging container for the coating body according to claim 1, characterized in that, The piston (42) includes a sealing ring (421), a positioning ring (422) and a driving ring (423), and the screw rod includes at least one convex rib (414). The sealing ring (421), the positioning ring (422) and the driving ring (423) are connected in sequence. The sealing ring (421) is in sealing cooperation with the inner wall of the inner cylinder (1). The positioning ring (422) is clamped with the at least one convex rib (414), and the driving ring (423) is in threaded cooperation with the screw rod (41).

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