KR20190002117U - Simple Air Cushion Powder Case - Google Patents

Abstract

The present invention relates to a simple air cushion powder case, which includes an outer case assembly (1) and an inner plate assembly (2) made of hard plastic, and the inner plate assembly (2) includes an insert (20) and an inner plate ( 21, the insert 20 can be sealingly connected on the opening side of the inner plate 21, and the insert 20 can be installed in the outer case assembly 1 together with the inner plate 21. The insert 20 is composed of a first insert 201 and a second insert 202, the first hermetic ring 2013, the second hermetic edge on the first insert 201, the second insert 202 The ring 2023 is disposed to face each other, and the flexible plastic is disposed on at least one of a plurality of engaging connection surfaces formed between the first hermetic side ring 2013, the second hermetic side ring 2023, and the upper side of the first body 2020. The sealing layer 22 manufactured by using the first coating 201 and the second insert 202 may be sealed to improve the sealing effect, and the plurality of second inserts 202 may be formed on the inner wall of the main body 2020. Two airtight bands 23 are provided to improve the sealing closing effect between the second body 2020 and the inner plate 21. The double hermetic design can optimize the hermetic sealing effect of the inner plate assembly 2 to ensure the cosmetic quality in the inner plate 21 for a long time.

Description

Simple Air Cushion Powder Case

The present invention relates to the technical field of the cosmetic case, and more particularly to a simple air cushion powder case.

Cosmetics are typically contained in a portable cosmetic case. Conventional powder case includes a case main body and a case cover, the case body is provided with a receiving cavity for accommodating cosmetics, the case cover is a structure that can be opened on the case body to open and close the receiving cavity, Only need to open the case cover when using cosmetics.

The conventional powder case is simple in structure and easy to operate, but has a defect in sealing property, and all cosmetics contain volatile solvents, but when the sealing property of the powder case is poor, volatile solvents in the cosmetics are brought into the atmosphere. It can be volatilized little by little, and furthermore, the cosmetics are cured and deteriorated, leading to cosmetic waste.

In order to overcome the above deficiencies, the present invention provides a simple air cushion powder case. The air cushion powder case is simple in structure, new and excellent in airtightness, which can ensure cosmetic quality for a long time.

Technical solutions adopted by the present invention to solve the above technical problems are as follows. That is, the simple air cushion powder case of the present invention includes an outer case assembly and an inner plate assembly made of hard plastic, and the inner plate assembly includes an insert and an inner plate having an opening and used to mount cosmetics, The insert can be hermetically connected on the opening side of the inner plate, and the insert can be installed in the outer case assembly coaxially with the inner plate. The insert is composed of a first insert and a second insert, and on the basis of a state in which the insert is sealingly connected on the inner plate opening side, the first insert is formed from a first disc-shaped main body, around the first body. A first extension edge extending from the inner plate and a connection edge extending outward from an outer wall of the extension edge, wherein the second insert includes a hollow cylindrical second body having both upper and lower sides opened; A bending edge extending outwardly from the periphery of the second body upper opening and bent downward, and a resistance edge extending inwardly from an inner wall of the second body, wherein the second body includes the inner plate. Sealed connection on the opening side, one side of the connection side is hinged to one side of the bending surface and integrally injection molded, the first body is the The upper opening of the second body can be opened and closed.

In addition, a first hermetic side ring extending toward the at least one resistance side is integrally formed on the outer side wall of the extension side, the at least one first hermetic side ring is coaxial with the first body at the same time, On the one side of the resistance side toward the extension side of the at least one extension edge extending toward the at least one extension side is further integrally formed, the at least one second hermetic edge ring is coaxial with the second body at the same time And the first body is closed to the upper opening of the second body, the at least one first hermetic edge ring is engaged with at least one of the second hermetic edge ring and the second body upper side, respectively. A plurality of locking connection surfaces are formed, and a sealing layer made of soft plastic is further covered on at least one of the plurality of locking connection surfaces.

Preferably, the sealing layer is molded integrally with the engaging surface.

Preferably, the first hermetic ring is two, and the second hermetic ring is one.

The first hermetic edge ring is joined to enclose a first groove into which the second hermetic edge ring is inserted, and the second hermetic edge ring is joined to the upper side of the second body and is located outside the first hermetic edge ring. A circumferential wall of the two first hermetic edge rings, a circumferential wall of the second hermetic edge rings, an inner circumferential wall of the first grooves, and an inner circumferential wall of the second grooves. The sealing layer is closely covered on at least one point.

Preferably, the first hermetic ring and the second hermetic ring are each one.

The second hermetic edge ring and the upper side of the second main body are joined to surround a second groove for inserting the first hermetic edge ring, and one on the inner circumferential wall of the second groove and the circumferential wall of the first hermetic edge ring. Is selected to closely cover the sealing layer.

Preferably, the outer case assembly includes an outer case body and an outer case cover, wherein an accommodating cavity is formed on the outer case body, and the accommodating cavity is opened on upper and lower surfaces of the outer case body, respectively. An upper opening and a lower opening of the accommodation cavity may be formed, and the outer case cover may be hinged on the outer case body to open and close the upper opening of the accommodation cavity.

The insert is installed in the receiving cavity coaxially with the inner plate, the insert is further engaged with the upper opening of the receiving cavity, the inner plate further extending or contracting relative to the lower opening of the receiving cavity. Can be.

Preferably, the outer case body includes a hollow cylindrical base having both upper and lower sides opened, and a protruding edge integrally formed around the lower opening of the base and extending radially inward, wherein the base and the protruding edge are Surround the receiving cavity together.

One side of the outer case cover is hinged on an outer wall of one side of the base part via a hinge, and further installs a first hook on the other side of the outer case cover, and the first hook on the outer wall of the other side of the base part The second hook may be further formed integrally with the first hook, and the first hook may be caught or detached from the second hook.

Preferably, a concave pit is formed on the base inner wall at a position adjacent to the upper opening, and the bending edge extends radially out along the base on the outer wall facing the base and two projections. A band is formed, and the two protruding bands are disposed up and down, and the radial width of the downwardly protruding band is smaller than the radial width of another upwardly protruding band, and the downwardly protruding band is freely inserted into the pit. Other protruding bands located upwardly may be freely mounted on the upper opening circumference of the base.

Preferably, the L-shaped rear fitting band is further fixed by being positioned at a position adjacent to one side on the outer case cover, and the L-shaped rear fitting band is elastic and can be elastically contacted on the outer wall of the base portion. .

In addition, based on a state in which the outer case cover closes the upper opening of the accommodation cavity, the outer case cover is further installed by fixing a mirror on an inner side facing the accommodation cavity.

Preferably, the inner plate has an inner plate body, the inner plate body has a hollow cylindrical structure with an upper side open, a male screw section is formed on the outer wall of the hollow cylindrical structure, and on the inner wall of the second body The female screw section is further formed to match the male screw section.

In addition, a plurality of hermetic bands are further inserted and installed at positions interposed between the resistance side and the female screw section on the inner wall of the second body.

Preferably, the receiving groove for mounting the power source on the bottom outer wall of the inner plate body is recessed.

In addition, a friction ring band extending along the inner plate body circumferential direction is further formed on the outer wall of the inner plate body, the friction ring band is located below the male screw section.

The beneficial effects of the present invention are as follows. ① According to one aspect of the present application, the first hermetic side ring and the second hermetic side ring are installed facing each other on the first insert and the second insert, in particular the first hermetic side ring, the second hermetic side ring and the second body The sealing layer made of soft plastic is closely covered on at least one of the plurality of engaging connecting surfaces formed between the upper sides to improve the sealing closing effect between the first insert and the second insert. According to another aspect of the present application, a plurality of airtight bands are provided on the inner wall of the second body to improve the sealing closure effect between the second body and the inner plate. Accordingly, the present application can greatly optimize the hermetic sealing effect of the inner plate assembly through the double hermetic design, thereby ensuring long-term cosmetic quality in the inner plate. ② Unlike the conventional powder case usage method, the air cushion powder case according to the present application allows the inner plate to rotate directly from the receiving cavity, or pushes the inner plate up from the receiving cavity with the insert, and then again the inner plate. As the insert is rotated and separated, the usage is very simple and new.

1 is a structural diagram of a simple air cushion powder case in the present invention;
Figure 2 is a cross-sectional structural view of the closed state of the simple air cushion powder case in the present invention;
Figure 3 is a cross-sectional structural view of the outer case cover of the simplified air cushion powder case is open and the first body in the closed state in the present invention;
Figure 4 is a schematic view of the first use of the simplified air cushion powder case in the present invention;
5 is a schematic view of a second mode of use of the simplified air cushion powder case in the present invention;
6 is a cross-sectional structural view of the inner plate assembly shown in FIG. 5;
7 is an enlarged structural diagram of part A shown in FIG. 6;
8a, 8b, 8c, 8d, 8e, 8f, 8g, 8h, 8i, 8j, 8k, 8l, and 8m are 13 schematic diagrams for implementing a sealing method between the first insert and the second insert.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Example

The simple air cushion powder case includes an outer case assembly (1) and an inner plate assembly (2) made of hard plastic, the inner plate assembly (2) having an insert (20), an opening and a cosmetic An inner plate 21, which is used for sealing, the insert 20 can be sealingly connected on the opening side of the inner plate 21, and the insert 20 is coaxial with the inner plate 21. It can be installed in the outer case assembly 1 by a line. The insert 20 is composed of a first insert 201 and a second insert 202, the first insert on the basis of the state in which the insert 20 is connected on the inner plate 21 opening side 201 includes a disc-shaped first body 2010, a first extension side 2011 formed to extend (ie, extend upward) from the periphery of the first body 2010 to the back of the inner plate 21, and And a connecting edge 2012 extending outward from an outer side wall of the extension side 2011, wherein the second insert 202 has a hollow cylindrical second body 2020 having both upper and lower sides opened, and 2 main body 2020 includes a bending edge 2021 extending outwardly from the periphery of the upper opening and bent downward, and a resistance edge 2022 extending inwardly from an inner side wall of the second body 2020. The second main body 2020 is hermetically connected to the inner plate 21 opening side, and the connection side 20 One side of 12 may be hinged to one side of the bending surface 2021 and integrally injection molded, and the first body 2010 may open and close an upper opening of the second body 2020.

In addition, a first hermetic edge ring 2013 is further integrally formed on the outer sidewall of the extension side 2011 to at least one resistance side 2022 (ie, downward), and at least one of the first The first hermetic edge ring 2013 is coaxial with the first body 2010 at the same time and is directed toward at least one of the extension sides on one side of the resistance side 2022 toward the extension side 2011 (ie And a second hermetic side ring 2023 extending further) is integrally formed, and at least one of the second hermetic side rings 2023 is coaxial with the second body 2020 at the same time, and the first body When (2010) is closed to the upper opening of the second body (2020), at least one of the first hermetic edge ring (2013) is at least one of the second hermetic side ring (2023) and the second body 2020 is connected to the upper side to form a plurality of engaging connection surface, at least one of the plurality of engaging connection surface The sealing layer 22 made of soft plastic is further covered on, and a first hermetic ring and a second hermetic ring are disposed on the first insert and the second insert, and the first hermetic ring, By tightly covering a sealing layer made of soft plastic on at least one of the plurality of engaging connecting surfaces formed between the second hermetic edge ring and the upper side of the second body, thereby improving the sealing closing effect between the first insert and the second insert. Effectively ensure the quality of cosmetics in the inner plate.

In the present embodiment, the sealing layer 22 is molded integrally with the engaging connection surface. That is, the first insert 201, the second insert 202, and the sealing layer 22 have an integrated structure.

In the present embodiment, the first hermetic edge ring 2013 is designed as two, and the second hermetic edge ring 2023 is designed as one. Two first hermetic side rings 2013 are joined to enclose a first groove into which the second hermetic side rings 2023 are inserted, and the second hermetic side rings 2023 are on the upper side of the second body 2020. A circumferential wall of the two first hermetic rings 2013 and the second hermetic rings 2023 of the second hermetic ring 2013. The sealing layer 22 is closely covered on at least one point of a circumferential wall, an inner circumferential wall of the first groove, and an inner circumferential wall of the second groove (specifically, FIGS. 7, 8c, 8d, 8e, and 8f). , 8g, 8h, 8i, 8j, 8k, 8l and 8m).

Alternatively, in the present embodiment, the first hermetic edge ring 2013 and the second hermetic side ring 2023 are each designed as one, and the upper side of the second hermetic side ring 2023 and the second body 2020 It encloses the second groove which is combined to insert the first hermetic edge ring 2013, and selects one on the inner circumferential wall of the second groove and the circumferential wall of the first hermetic edge ring 2013 to seal the sealing layer 22. ) Is tightly covered (see specifically FIGS. 8A and 8B).

In the present embodiment, as shown in FIGS. 2 and 3, the outer case assembly 1 includes an outer case body 10 and an outer case cover 11, and on the outer case body 10. An accommodating cavity is formed, and the accommodating cavity is respectively opened on the upper and lower surfaces of the outer case body 10 to form an upper opening and a lower opening of the accommodating cavity, and the outer case lid 11 is the outer Hinge coupling on the case body 10 may open and close the upper opening of the accommodation cavity.

The insert 20 is installed in the accommodating cavity coaxially with the inner plate 21, the insert 20 is further engaged with the upper opening of the accommodating cavity, and the inner plate 21 is connected to the It may further extend or contract relative to the lower opening of the receiving cavity.

Preferably, the outer case body 10 has a hollow cylindrical base portion 100 having both upper and lower sides opened, and a protruding edge 101 integrally formed around the lower opening of the base portion 100 and extending radially inward. ), And the base 100 and the protruding edge 101 together surround the receiving cavity.

One side of the outer case cover 11 is hinged on the outer wall of one side of the base portion 100 through a hinge, and further installs a first hook on the other side of the outer case cover 11, the base ( 100) A second hook that is matched to the first hook is further formed integrally on the outer wall of the other side, and the first hook may be caught or detached from the second hook. In addition, the L-type rear fitting band 12 is further fixed by being positioned at a position adjacent to one side on the outer case cover 11, and the L-type rear fitting band 12 is elastic to move the outer case cover. Underneath it can be elastically contacted on the outer wall of the base 100, that is, the L-shaped rear fitting band can elastically open the outer case cover.

In addition, based on a state in which the outer case cover 11 closes the upper opening of the accommodation cavity, the outer case cover 11 is further installed by fixing a mirror 13 on an inner side facing the accommodation cavity. .

Preferably, the insert 20 is connected to the upper opening of the receiving cavity by the locking structure as follows. That is, a pit concave to the inner wall of the base portion 100 is formed at a position adjacent to the upper opening on the inner wall of the base portion 100, and the bending edge 2021 is formed on the outer wall facing the base portion 100. Radially outward along the two protruding bands 2024 are formed, the two protruding bands 2024 are disposed up and down, and the radial width of the protruding band located below is the radial width of the other protruding band located above Smaller (radial width is a width extending radially along the base of the protruding band), a lower protruding band can be freely inserted into the pit, and another protruding band located above the base 100 It can be mounted freely on the upper perimeter of the opening.

In the present embodiment, the structure of sealingly connecting the second body 2020 on the opening side of the inner plate 21 is as follows. That is, the inner plate 21 is provided with an inner plate body 210, the inner plate body 210 is a hollow cylindrical structure with an open upper side, the cavity of the inner plate is used to receive cosmetics, A male screw section is formed on the outer wall of the hollow cylindrical structure, and a female screw section is formed on the inner wall of the second body 2020 to match the male screw section, and the second body 2020 and the inner plate 21 are formed. The opening side is sealed and screwed, not only to maintain cosmetic quality in the inner plate on one side for a long time, but also convenient and new to use on the other side. Naturally, in addition to the threaded connection, a clamping connection type assembly may be adopted between the inner plate and the insert, which is well known in the art, and thus will not be described in detail herein.

In addition, preferably, a plurality of airtight bands 23 are further inserted in the position interposed between the resistance side 2022 and the female screw section on the inner wall of the second body 2020, thereby providing a plurality of airtight bands. The sealing closure effect between the second body and the inner plate can be optimized.

Preferably, the receiving groove 211 for mounting the power source on the bottom outer wall of the inner plate main body 210 is concave, the user receives the inner plate body by placing a finger or a coin in the receiving groove. It can be rotated in or out relative to the cavity. In addition, a radially inwardly extending contact protrusion 212 is formed around the upper opening of the inner plate body, and the insert 20 is sealed on the opening side of the inner plate body 210 based on the state. The contact protruding side 212 and the resistance side 2022 contact each other.

In addition, a friction ring band 213 extending along the inner plate body circumferential direction is further formed on an outer wall of the inner plate body 210, and the friction ring band 213 is located below the male screw section. .

Through the installation, there are mainly two methods of using the simple air cushion powder case of the present invention. One is to rotate the inner plate 21 directly out of the receiving cavity and use it (see FIG. 4), and the other is to first open the outer case cover 11 and to receive the inner plate 21 together with the insert 20. After pushing upward from the cavity, the inner plate 21 and the insert 20 are rotated and separated (see FIG. 5).

In summary, compared to the prior art, the simplified air cushion powder case of the present application has the following advantages. ① According to one aspect of the present application, the first hermetic side ring and the second hermetic side ring are installed facing each other on the first insert and the second insert, in particular the first hermetic side ring, the second hermetic side ring and the second body The sealing layer made of soft plastic is closely covered on at least one of the plurality of engaging connecting surfaces formed between the upper sides to improve the sealing closing effect between the first insert and the second insert. According to another aspect of the present application, a plurality of airtight bands are provided on the inner wall of the second body to improve the sealing closure effect between the second body and the inner plate. Thus, the present application can greatly optimize the hermetic sealing effect of the inner plate assembly through the double hermetic design, thereby maintaining cosmetic quality in the inner plate for a long time. ② Unlike the conventional powder case usage method, the air cushion powder case according to the present application allows the inner plate to rotate directly from the receiving cavity, or pushes the inner plate up from the receiving cavity with the insert, and then again the inner plate. As the insert is rotated and separated, the usage is very simple and new.

The above embodiment is not limited to the present invention as an example for explaining the effect of the present invention. Those skilled in the art to which the present invention pertains may make slight improvements and modifications without departing from the principles of the present invention, all of which are within the protection scope of the present invention.

1: outer case assembly
11: outer case cover
13: mirror
101: protrusion side
20: Insert
22: sealing layer
201: first insert
2010: first body
2012: connecting side
2020: second body
2022: resistance valve
2024: protruding band
211: accommodation home
213: friction ring band
10: outer case body
12: L-shaped rear fitting band
100: base
2: inner plate assembly
21: inner plate
23: confidential band
202: second insert
2011: Extension
2013: first airtight ring
2021: bending surface
2023: second hermetic ring
210: inner plate body
212: contact protrusion

Claims (10)

In the simple air cushion powder case,
An outer case assembly (1) and an inner plate assembly (2) made of hard plastic, the inner plate assembly (2) having an insert (20) and an inner plate (21) having an opening and used for holding cosmetics The insert 20 can be sealingly connected on the opening side of the inner plate 21, the insert 20 coaxially with the inner plate 21 and the outer case assembly 1. Can be installed further); The insert 20 is composed of a first insert 201 and a second insert 202, the first insert on the basis of the state in which the insert 20 is connected on the inner plate 21 opening side 201 is a disc-shaped first body 2010, a first extension side 2011 extending from the circumference of the first body 2010 to the inner plate 21, and the extension side 2011. And a connecting edge 2012 extending outward from an outer wall of the second insert 202, wherein the second insert 202 has a hollow cylindrical second body 2020 having both upper and lower sides opened, and an upper side of the second body 2020. A bending edge 2021 extending outwardly from the periphery of the opening and bent downward, and a resistance edge 2022 extending inwardly from an inner wall of the second body 2020, wherein the second edge 2022 is formed. The main body 2020 is sealingly connected on the inner plate 21 opening side, and one side of the connection side 2012 is Group is coupled with a side hinge of the bending face 2021 and the injection-molded integrally, the first body (2010) is able to open and close the top opening of the second main body 2020;
In addition, a first hermetic side ring 2013 extending toward at least one resistance side 2022 is integrally formed on the outer sidewall of the extension side 2011, and at least one first hermetic side ring ( 2013 is coaxial with the first body 2010 at the same time; On the one side of the resistance side 2022 toward the extension side 2011, a second hermetic side ring 2023 extending toward at least one of the extension side is further formed integrally, at least one of the second Hermetic ring 2023 is coaxial with the second body 2020 at the same time; When the first body 2010 is closed to the upper opening of the second body 2020, at least one of the first hermetic rings 2013 is at least one of the second hermetic rings 2023 and It is connected to the upper side of the second main body 2020 to form a plurality of engaging connection surface; A simple air cushion powder case, characterized in that the sealing layer 22 made of soft plastic is further covered on at least one of the plurality of engaging surfaces. The method of claim 1,
The sealing layer (22) is a simple air cushion powder case, characterized in that molded integrally with the engaging surface. The method of claim 1,
The first hermetic ring 2013 is two, and the second hermetic ring 2023 is one;
Two first hermetic side rings 2013 are joined to enclose a first groove into which the second hermetic side rings 2023 are inserted, and the second hermetic side rings 2023 are on the upper side of the second body 2020. A circumferential wall of the two first hermetic rings 2013 and the second hermetic rings 2023 of the second hermetic ring 2013. The simple air cushion powder case of claim 1, wherein the sealing layer (22) is closely covered on at least one of a peripheral wall, an inner peripheral wall of the first groove, and an inner peripheral wall of the second groove. The method of claim 1,
The first hermetic ring 2013 and the second hermetic ring 2023 are each one;
The second hermetic side ring 2023 and the upper side of the second body 2020 are joined to surround a second groove into which the first hermetic side ring 2013 is inserted and installed, and an inner circumferential wall of the second groove and the first groove. 1 is a simple air cushion powder case characterized in that the sealing layer 22 is tightly selected by selecting one on the circumferential wall of the hermetic side ring 2013. The method of claim 1,
The outer case assembly 1 includes an outer case body 10 and an outer case cover 11, and an accommodating cavity is formed on the outer case body 10, and the accommodating cavities are each of the outer case body ( Openings on the upper and lower surfaces of 10) to form upper and lower openings of the receiving cavity; The outer case cover (11) can be hinged on the outer case body (10) to open and close the upper opening of the receiving cavity;
The insert 20 is installed in the accommodating cavity coaxially with the inner plate 21, the insert 20 is further engaged with the upper opening of the accommodating cavity, and the inner plate 21 is the Simple air cushion powder case, characterized in that it can be further extended or contracted relative to the lower opening of the receiving cavity. The method of claim 5,
The outer case body 10 includes a hollow cylindrical base portion 100 having both upper and lower sides opened, and a protruding edge 101 integrally formed around the lower opening of the base portion 100 and extending radially inward. The base 100 and the protruding edge 101 together surround the receiving cavity;
One side of the outer case cover 11 is hinged on the outer wall of one side of the base portion 100 through a hinge, and further installs a first hook on the other side of the outer case cover 11, the base ( 100) The second hook matching the first hook is further formed integrally on the outer wall of the other side, the first hook is a simple air cushion powder, characterized in that the second hook can be caught or detached case. The method of claim 6,
A concave pit is formed in the inner wall of the base portion 100 at a position adjacent to the upper opening on the inner wall of the base portion 100; The bending side 2021 extends radially outward along the base on the outer wall facing the base 100 and two protruding bands 2024 are formed, and the two protruding bands 2024 are disposed up and down. The radial width of the lower protruding band is smaller than the radial width of the upper protruding band, and the lower protruding band can be freely inserted into the pit, and the upper protruding band located above the base 100. Simple air cushion powder case, characterized in that can be mounted freely on the upper opening circumference of the. The method of claim 6,
The L-shaped rear fitting band 12 is further fixed by being positioned at a position adjacent to one side on the outer case cover 11, and the L-shaped rear fitting band 12 is elastic to the outer wall of the base part 100. Can be in elastic contact with the phase;
In addition, based on a state in which the outer case cover 11 closes the upper opening of the accommodation cavity, the mirror 13 is positioned and fixed on the inner side of the outer case cover 11 facing the accommodation cavity. Simple air cushion powder case, characterized in that. The method of claim 1,
The inner plate 21 includes an inner plate body 210, and the inner plate body 210 has a hollow cylindrical structure with an upper side opened, and a male screw section is formed on an outer wall of the hollow cylindrical structure, and the second A female thread section matching the male screw section is further formed on an inner wall of the main body 2020;
In addition, a simple air cushion powder case, characterized in that a plurality of airtight bands 23 are further inserted in a position interposed between the resistance side 2022 and the female screw section on the inner wall of the second body (2020). The method of claim 9,
A receiving groove 211 for mounting a power source on the bottom outer wall of the inner plate body 210 is recessed;
In addition, a friction ring band 213 is further formed on the outer wall of the inner plate body 210 along the inner plate body circumferential direction, and the friction ring band 213 is located below the male screw section. Simple air cushion powder case, characterized in that.

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