Spring plug airtight powder box

Abstract

The present invention relates to an airtight powder box with a spring inner plug. The invention aims to solve the technical problems of similar products with poor inner plug and lid ring structural design, resulting in poor sealing, easy detachment and falling off, and inconvenient production and assembly. The key points are that the airtight powder box has a spring inner plug with a corrugated elastic cylindrical raised elastic section at the middle of one end of the top, the barrel of which abuts against the inner ring of the outer cover and undergoes corrugated elastic deformation. The outer diameter of the raised plug at the other end of the spring inner plug is provided with a stepped edge. The spring inner plug is fixed to the opening of the inner ring of the outer cover by the stepped edge and a retaining ring. The plug of the spring inner plug extends out of the ring hole at one end of the retaining ring, and the inner diameter of the retaining ring is provided with a snap-fit ​​section at the other end. The snap-fit ​​section of the snap-fit ​​section snaps and is fixed to the outer ring groove at the outer diameter of the inner ring of the outer cover. The mesh edge of the mesh screen is clamped and fixed to the inner snap groove of the middle ring through the lower mesh clamping groove of the ring cover. At the same time, the outer ultrasonic ribs and inner ultrasonic ribs of the lid ring are respectively fixed to the middle ring by ultrasonic welding.

Description

Technical Field

[0001] The invention relates to a loose powder box, in particular to an airtight loose powder box with a spring inner plug. Background Art

[0002] Loose powder compacts and air cushion compacts share similar structures and are used for storing and accessing solid dry or wet pressed powders. These compacts are typically packaged with solid dry or wet pressed powders, which place high demands on sealing performance. While the compact body must possess the same sealing and accessibility characteristics as a bottle or hose, the airtightness and weight loss requirements for the inner powder compartment are higher. However, existing loose powder compacts typically utilize a screw-type outer cap that screws onto the bottle body, eliminating the need for an internal puff. This is due in part to the need for sealing within the inner powder compartment, and also due to the relatively small bottle volume (mostly only 10g-15g), which makes the screw-type design simpler and more cost-effective. Some existing loose powder boxes and similar products have an inner plug structure in the upper cover, such as the application number 202123039133.4 disclosed in the Chinese patent literature, with the authorization announcement date of November 25, 2022, and the utility model name "A Loose Powder Box." The loose powder box includes a box body, an upper cover, a material bowl, a mesh screen, and an inner plug. The upper cover is detachably mounted on the box body, the material bowl is mounted between the upper cover and the box body, and the mesh screen is mounted at the bottom of the material bowl. The bottom of the material bowl has a through hole, and the inner plug is mounted between the upper cover and the material bowl, sealing the through hole. However, the inner plug structure and clamping and fixing design of the above-mentioned products are poor, especially the inner plug is difficult to deform under force, and the clamping and fixing structure design of the mesh screen is poor. Summary of the Invention

[0003] To overcome the aforementioned shortcomings, the present invention aims to provide a spring-loaded, airtight powder compact with a spring-loaded inner plug and a sealing ring at the bottom of the inner lid. This solution addresses the technical issues of existing similar products, such as poorly designed inner plugs and lid rings, which result in poor sealing, easy detachment and falling off, and inconvenient production and assembly. This objective is achieved through the following technical solution.

[0004] A spring plug airtight powder box, the airtight powder box includes an outer cover, a spring plug, a buckle, a middle ring, a mesh screen, a cover ring and a bottle body, an outer thread is provided at the outer diameter of the bottle mouth of the bottle body, a lower buckle groove is provided above the outer thread of the bottle body at the outer diameter of the bottle mouth, an inner thread is provided at the inner diameter of the cover mouth of the outer cover, an upper buckle groove is provided below the outer diameter of the ring mouth of the middle ring, the upper buckle groove of the middle ring is buckled and fixed to the lower buckle groove of the bottle body, and the inner wall below the lower buckle groove of the middle ring is fixed to the bottle body The inner diameter of the bottle mouth is interference fit at the lower buckling groove, and the spring inner plug is fixed in the inner ring sleeve raised at the top of the outer cover by the buckle limiter; when the external thread of the bottle body is connected with the internal thread of the outer cover, the spring inner plug of the outer cover is against the center of the middle circle above the powder outlet hole, and a mesh screen is provided below the powder outlet hole of the middle circle and is clamped and fixed to the middle circle by the cover ring. The mesh body in the middle of the mesh screen is located at the powder outlet hole of the middle circle, and the inner wall between the upper buckling groove of the inner diameter of the middle circle and the powder outlet hole is bowl-shaped. The key points of its structural design are that a corrugated elastic cylindrical raised elastic section is provided in the middle of one end of the top of the spring inner plug. The mouth of the elastic section abuts against the inner ring sleeve of the outer cover and undergoes corrugated elastic deformation. A stepped edge is provided at the outer diameter of the raised plug at the other end of the spring inner plug. The spring inner plug is fixed to the sleeve opening of the inner ring sleeve of the outer cover through the stepped edge and a retaining ring. The plug of the spring inner plug extends out of the ring hole at one end of the retaining ring. The inner diameter of the other end of the retaining ring is provided with a snap-fit ​​section, which snaps and fixes to the outer ring groove at the outer diameter of the inner ring sleeve of the outer cover. Thus, the spring inner plug is fixed to the outer cover through the snap-fit ​​ring, improving the stability of the spring inner plug. The elastic section of the spring inner plug facilitates the sealing of one end of the plug, and the automated production and assembly of the spring inner plug and the entire structure.

[0005] The top of the ring opening of the cover ring is provided with a lower mesh clamping groove, and the tops of the ring openings inside and outside the lower mesh clamping groove are provided with raised external ultrasonic ribs, and the lower mesh clamping groove on the other side of the external ultrasonic ribs is provided with internal ultrasonic ribs, and the bottom of the powder outlet of the middle ring is provided with downwardly raised inner snap groove and outer snap groove; the mesh edge of the mesh screen is clamped and fixed to the inner snap groove of the middle ring through the lower mesh clamping groove of the cover ring. At the same time, the outer side of the ring opening of the lower mesh clamping groove of the cover ring is buckled and fixed to the outer snap groove of the middle ring, the external ultrasonic ribs of the cover ring are fixed to the outer snap groove of the middle ring by ultrasonic welding, and the internal ultrasonic ribs of the cover ring are fixed to the inner ring opening of the inner snap groove of the middle ring by ultrasonic welding, the inner notch of the inner snap groove of the middle ring is the powder outlet, and the inner notch of the lower mesh clamping groove of the cover ring is located on the inner side of the powder outlet of the middle ring. The middle ring of the above structure adopts a double snap structure composed of an inner snap groove and an outer snap groove, which improves the firmness of the mesh screen and prevents the mesh screen and the cover ring from falling. After the cover ring, mesh screen and middle ring are assembled, automated production and assembly are carried out.

[0006] The outer ultrasonic ribs of the cover ring are fixed to the outer snap grooves of the middle ring by ultrasonic welding, and the inner ultrasonic ribs of the cover ring are fixed to the inner ring opening of the inner snap grooves of the middle ring by ultrasonic welding. At the same time, the mesh of the mesh screen is fixed to the middle ring by ultrasonic welding through the inner ultrasonic ribs of the cover ring, or the mesh edge of the mesh screen is fixed to the middle ring by ultrasonic welding through the inner ultrasonic ribs of the cover ring. The above structure facilitates the ultrasonic welding of the inner ultrasonic ribs of the cover ring, while the mesh of the mesh screen is further fixed between the middle ring and the cover ring by the inner ultrasonic ribs of the cover ring. The inner snap groove of the middle ring is located on the outside of the groove wall of the outer snap groove, and the groove opening of the inner snap groove of the middle ring is lower than the outer groove opening of the outer snap groove. The above is an embodiment of the connected inner snap groove and outer snap groove structure.

[0007] A raised inner groove ring is provided at the bottom of one side of the lower mesh clamping groove of the cover ring below the notch of the inner snap groove of the middle ring. The inner ring opening of the lower mesh clamping groove of the cover ring is lower than or parallel to the outer ring opening of the lower mesh clamping groove. The above structure facilitates adjusting the height of the inner ring opening of the lower mesh clamping groove of the cover ring according to the actual installation requirements of the mesh screen. Since the mesh of the mesh screen has tension, the raised inner ring opening of the lower mesh clamping groove of the cover ring does not affect the installation of the mesh screen, but rather further tightens the mesh.

[0008] A vent hole is provided on one side of the opening of the elastic section of the spring inner plug.

[0009] The inner sidewall of the notch of the upper buckle groove of the middle ring is provided with equidistantly distributed and raised buckle blocks. The above structure further improves the fixed buckle between the middle ring and the bottle body and further facilitates automated production and assembly.

[0010] A powder puff is provided in the bowl-shaped chamber above the powder outlet of the middle ring, and the powder puff is fixed in the middle ring by a spring inner plug. The height of the powder puff can be adjusted according to actual needs, and can also be set in the powder puff cavity box on the top of the outer cover.

[0011] Alternatively, the bottle body omits external threads, the outer cover omits internal threads, one outer diameter side of the outer cover is hinged to one outer diameter side of the bottle body, and the other outer diameter side of the outer cover is symmetrically buckled to the other outer diameter side of the bottle body.

[0012] The invention has reasonable structural design, convenient production and assembly, low production cost, good sealing performance and good sealing ring stability; it is suitable for use as a spring plug airtight loose powder box, and is a structural improvement of similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic cross-sectional view of the present invention, in which parts A, B and C are framed and the dotted line represents the deformation of the spring inner plug.

[0014] Figure 2 yes Figure 1 Schematic diagram of the external structure.

[0015] Figure 3 yes Figure 1 A magnified view of the structure of part A.

[0016] Figure 4 yes Figure 1 Enlarged view of the structure of part B.

[0017] Figure 5 yes Figure 1 Enlarged view of the C part structure.

[0018] Figure 6 yes Figure 2 Schematic diagram of the explosion structure.

[0019] Figure 7 yes Figure 6 Schematic diagram of the half-section structure in the explosion state.

[0020] Figure 8 yes Figure 1 Schematic diagram of the improved structure, with a powder puff added.

[0021] Serial number and name of the accompanying drawings: 1. Outer cover, 101. Inner ring sleeve, 2. Spring inner plug, 201. Elastic section, 2011. Vent, 202. Step edge, 3. Buckle, 301. Buckling section, 302. Limiting edge, 4. Middle ring, 401. Upper buckling groove, 4011. Buckle block, 402. Inner buckle groove, 403. Outer buckle groove, 5. Mesh screen, 501. Mesh edge ring, 6. Cover ring, 601. Lower mesh clamping groove, 602. Outer ultrasonic rib, 603. Inner groove ring platform, 604. Inner ultrasonic rib, 7. Bottle body, 701. Lower buckling groove, 8. Powder puff. DETAILED DESCRIPTION

[0022] Now, the structure and use of the present invention will be further described in conjunction with the accompanying drawings. Figure 1-Figure 7As shown, the outer diameter of the bottle mouth of the airtight powder box is provided with an external thread on the bottle body 7, and a lower buckling groove 701 is provided on the outer diameter of the bottle mouth above the external thread of the bottle body. The inner diameter of the cover mouth of the outer cover 1 is provided with an internal thread, and an upper buckling groove 401 is provided below the outer diameter of the ring mouth of the middle ring 4. The upper buckling groove of the middle ring is buckled and fixed to the lower buckling groove of the bottle body. The inner wall below the lower buckling groove of the middle ring is interference fit with the inner diameter of the bottle mouth of the lower buckling groove of the bottle body. The inner side wall of the notch of the upper buckling groove is provided with equidistant points. The raised snap block 4011 is arranged and fixed, and the spring inner plug 2 is fixed in the inner ring sleeve 101 raised on the top inner side of the outer cover by the buckle 3; when the external thread of the bottle body is connected with the internal thread of the outer cover, the spring inner plug of the outer cover is against the center of the middle circle above the powder outlet hole, and a mesh screen is provided below the powder outlet hole of the middle circle and is clamped and fixed to the middle circle by the cover ring 6. The mesh body in the middle of the mesh screen 5 is located at the powder outlet hole of the middle circle, and the inner wall between the upper buckling groove of the inner diameter of the middle circle and the powder outlet hole is bowl-shaped. Its specific structure is as follows: a corrugated elastic cylindrical raised elastic section 201 is provided in the middle of one end of the top of the spring inner plug, the barrel mouth of the elastic section is against the inner ring sleeve of the outer cover, and undergoes corrugated elastic deformation, a vent 2011 is provided on one side of the barrel mouth of the elastic section, and a step edge 202 is provided on the outer diameter of the raised plug at the other end of the spring inner plug, the spring inner plug is fixed to the sleeve mouth of the inner ring sleeve of the outer cover by the step edge and the buckle, the plug of the spring inner plug extends out of the ring hole at one end of the buckle, and a buckling section 301 is provided on the inner diameter of the other end of the buckle, and the buckling section of the buckle is buckled and fixed to the outer ring groove at the outer diameter of the inner ring sleeve of the outer cover. A lower mesh clamping groove 601 is provided at the top of the ring opening of the cover ring, and raised external ultrasonic ribs 602 are provided at the top of the ring opening inside and outside the lower mesh clamping groove, and an internal ultrasonic rib 604 is provided in the lower mesh clamping groove on the other side of the external ultrasonic rib. A downwardly raised internal snap groove 402 and an external snap groove 403 are provided at the bottom of the powder outlet of the middle ring; the mesh edge ring 501 of the mesh screen is clamped and fixed to the internal snap groove of the middle ring by the lower mesh clamping groove of the cover ring. At the same time, the outer side of the ring opening of the lower mesh clamping groove of the cover ring is snapped and fixed to the external snap groove of the middle ring, the external ultrasonic rib of the cover ring is fixed to the external snap groove of the middle ring by ultrasonic welding, and the internal ultrasonic rib of the cover ring is fixed to the inner ring opening of the inner snap groove of the middle ring by ultrasonic welding. The mesh body of the mesh screen is fixed to the middle ring by the internal ultrasonic rib of the cover ring by ultrasonic welding, and the inner notch of the inner snap groove of the middle ring is the powder outlet. The inner notch of the lower mesh clamping groove of the cover ring is located on the inner side of the powder outlet of the middle ring.

[0023] The inner snap groove of the middle ring is located outside the groove wall of the outer snap groove, and the groove opening of the inner snap groove of the middle ring is lower than the outer groove opening of the outer snap groove. Below the groove opening of the inner snap groove of the middle ring, a raised inner groove ring 603 is provided on the bottom of one side of the lower net clamping groove of the cover ring. The inner ring opening of the lower net clamping groove of the cover ring is lower than or parallel to the outer ring opening of the lower net clamping groove.

[0024] When in use, open the outer cover and the powder in the bottle can be sprayed out through the mesh sieve for use.

[0025] According to the above structural characteristics, such as Figure 8 As shown, the mesh of the aforementioned screen is ultrasonically welded to the middle ring via internal ultrasonic ribs in the cover ring, or the mesh edge of the screen is ultrasonically welded to the middle ring via internal ultrasonic ribs in the cover ring. A powder puff 8 is provided within the bowl-shaped chamber above the powder outlet of the middle ring, and is compressed and secured within the middle ring by a spring plug. Alternatively, the bottle body may omit external threads, the outer cover may omit internal threads, one outer diameter side of the outer cover may be hinged to one outer diameter side of the bottle body, and the other outer diameter side of the outer cover may be symmetrically engaged with the other outer diameter side of the bottle body.

[0026] This airtight powder compact's design uses a spring plug in conjunction with a center ring for sealing. A snap-fit ​​design uses a snap ring and outer cover to press the spring plug in place. After the spring plug's stepped edge is positioned against the top center inner edge of the outer cover, the snap ring is pressed in. The snap ring's snap section and the outer ring groove of the inner ring sleeve of the outer cover create an interference fit, generating a pull-out force to secure the spring plug. The spring plug's stepped upper elastic section is bellows-shaped, and the snap ring's lower end interacts with the ring opening to create an upward and downward pressure. The spring plug's plug interferes with the center ring's powder outlet plane to create an airtight seal. The center ring is fixed to the bottle body with a snap fit, and a side airtight design is added. The center ring's upper snap groove snaps into the bottle body's lower snap groove for securement. The lower inner wall of the center ring's lower snap groove interferes with the inner diameter of the bottle mouth, creating a tight seal. The outer cap is threadedly secured to the bottle body; the inner threads of the outer cap engage with the threads on the bottle mouth, allowing the outer cap to be rotated and fixed. The center ring and the lid ring are ultrasonically welded together, while the mesh screen is also ultrasonically welded to the center ring. The outer and inner ultrasonic ribs of the lid ring are ultrasonically welded to the corresponding inner and outer snap grooves within the center ring. The mesh screen is placed in the inner snap groove of the center ring to prevent it from swinging side to side, and then the lid ring is placed on top and secured by ultrasonic welding.

Claims

1. A spring plug airtight powder box, comprising an outer cover (1), a spring plug (2), a buckle (3), a middle ring (4), a mesh (5), a cover ring (6) and a bottle body (7), wherein the bottle body is provided with an outer thread at the outer diameter of the bottle mouth, a lower buckle groove (701) is provided above the outer thread of the bottle body at the outer diameter of the bottle mouth, an inner thread is provided at the inner diameter of the cover mouth of the outer cover, an upper buckle groove (401) is provided below the outer diameter of the ring mouth of the middle ring, the upper buckle groove of the middle ring is buckled and fixed to the lower buckle groove of the bottle body, and the lower buckle groove of the middle ring is fixed to the lower buckle groove of the bottle body. The inner wall below the groove is interference-fitted with the inner diameter of the bottle mouth at the lower buckling groove of the bottle body, and the spring inner plug is fixed in the inner ring sleeve (101) raised at the top of the outer cover by a buckle (3); when the outer thread of the bottle body is connected to the inner thread of the outer cover, the spring inner plug of the outer cover is against the center of the middle ring above the powder outlet hole, and a mesh screen is provided below the powder outlet hole of the middle ring and is fixed to the middle ring by the cover ring. The mesh body in the middle of the mesh screen is located at the powder outlet hole of the middle ring, and the inner wall between the upper buckling groove of the inner diameter of the middle ring and the powder outlet hole is bowl-shaped; it is characterized in that: A corrugated elastic cylindrical raised elastic section (201) is provided in the middle of one end of the top of the spring inner plug (2), the mouth of the elastic section is against the inner ring sleeve (101) of the outer cover (1), and undergoes corrugated elastic deformation, a step edge (202) is provided on the outer diameter of the raised plug at the other end of the spring inner plug, the spring inner plug (2) is fixed to the sleeve opening of the inner ring sleeve of the outer cover by the step edge and the buckle (3), the plug of the spring inner plug extends out of the ring hole at one end of the buckle, and a buckle section (301) is provided on the inner diameter of the other end of the buckle, and the buckle section of the buckle is buckled and fixed to the outer ring groove at the outer diameter of the inner ring sleeve of the outer cover; The top of the ring opening of the cover ring (6) is provided with a lower mesh clamping groove (601), and the top of the ring opening inside and outside the lower mesh clamping groove is provided with a raised external ultrasonic rib (602), and the lower mesh clamping groove on the other side of the external ultrasonic rib is provided with an internal ultrasonic rib (604), and the bottom of the powder outlet of the middle ring (4) is provided with a downwardly raised internal buckle groove (402) and an external buckle groove (403); the mesh edge ring (501) of the mesh screen (5) is clamped and fixed to the internal buckle groove of the middle ring through the lower mesh clamping groove of the cover ring, and at the same time, the outer side of the ring opening of the lower mesh clamping groove of the cover ring is buckled and fixed to the outer buckle groove of the middle ring, the external ultrasonic rib of the cover ring is fixed to the outer buckle groove of the middle ring by ultrasonic welding, and the internal ultrasonic rib of the cover ring is fixed to the inner ring opening of the inner buckle groove of the middle ring by ultrasonic welding, the inner notch of the inner buckle groove of the middle ring is the powder outlet, and the inner notch of the lower mesh clamping groove of the cover ring is located inside the powder outlet of the middle ring; The inner snap groove (402) of the middle ring (4) is located outside the groove wall of the outer snap groove (403), and the groove opening of the inner snap groove of the middle ring is lower than the outer groove opening of the outer snap groove; a raised inner groove ring platform (603) is provided at the bottom of one side of the lower net clamping groove (601) of the cover ring (6) below the groove opening of the inner snap groove (402) of the middle ring (4), and the inner ring opening of the lower net clamping groove of the cover ring is lower than or parallel to the outer ring opening of the lower net clamping groove; a vent hole (2011) is provided on one side of the tube opening of the elastic section (201) of the spring inner plug (2).

2. The spring plug airtight loose powder box according to claim 1, characterized in that The outer ultrasonic ribs (602) of the cover ring (6) are fixed to the outer buckle groove (403) of the middle ring (4) by ultrasonic welding, and the inner ultrasonic ribs (604) of the cover ring are fixed to the inner ring opening of the inner buckle groove (402) of the middle ring by ultrasonic welding. At the same time, the mesh body of the mesh screen (5) is fixed to the middle ring by ultrasonic welding through the inner ultrasonic ribs of the cover ring, or the mesh edge ring (501) of the mesh screen is fixed to the middle ring by ultrasonic welding through the inner ultrasonic ribs of the cover ring.

3. The spring plug airtight loose powder box according to claim 1, characterized in that The inner side wall of the slot at the upper buckling slot (401) of the middle ring (4) is provided with equidistantly distributed and raised buckling blocks (4011).

4. The airtight loose powder box with spring plug according to claim 1, characterized in that A powder puff (8) is provided in the bowl-shaped chamber above the powder outlet of the middle ring (4), and the powder puff is pressed and fixed in the middle ring by a spring inner plug (2).

5. The spring plug airtight loose powder box according to claim 1, characterized in that Alternatively, the bottle body (7) omits the external thread, the outer cover (1) omits the internal thread, one side of the outer diameter of the outer cover is hinged to one side of the outer diameter of the bottle body, and the other side of the outer diameter of the outer cover is symmetrically engaged with the other side of the outer diameter of the bottle body.

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