Bottom rotating type double-bin container
The bottom-rotating dual-compartment container displays the mixing state of the ingredients through a transparent bottle and is completely light-proof after use, solving the problem that existing containers cannot achieve visual judgment and light protection, thus extending the storage and usage time of cosmetics.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-03-10
AI Technical Summary
Existing cosmetic containers cannot meet the dual requirements of visual judgment before mixing and light protection after mixing, especially in cases of large volume or long-term use.
It adopts a bottom-rotating dual-compartment container design, which allows for the visualization of the material through the exposed area of the transparent bottle, and achieves a light-blocking effect through the full coverage of the bottom and outer caps. The piston and base interlocking structure realizes the mixing and covering of the sealed compartments.
It enables visual display of the material before mixing, making it easy for users to determine whether it has been mixed. At the same time, the fully light-proof design extends the storage and effective use time after use.
Smart Images

Figure CN223982885U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cosmetic packaging technology, and in particular to a bottom-rotating double-compartment container. Background Technology
[0002] Against the backdrop of explosive growth in the functional cosmetics market, containers are often designed with compartments to ensure formula stability and activation sequence. This means that easily oxidized ingredients in cosmetics are stored separately in small compartments and then mixed before use by the consumer. This method of storing ingredients separately and then mixing them can prolong the activity of the ingredients compared to traditional methods. A common example is the dual-compartment vacuum bottle, where consumers can mix the two compartments by pressing the pump head. However, since active ingredients usually need to be protected from light after mixing, the outer bottle of this type of packaging is usually an opaque solid color design, making it impossible to visually determine whether the ingredients have been mixed.
[0003] Another common type is the dual-compartment press-mix extrusion bottle. This type of packaging usually involves pressing the mixing device at the bottom of the bottle to mix the two materials, and then squeezing the bottle to dispense the product. It is only suitable for small-volume cosmetics that can be used up in a short period of time, and its light protection requirements are relatively low. For some larger-volume cosmetics or cosmetics that require a longer usage time, it cannot achieve the dual effect of visually judging whether the materials have been mixed and extending the storage and effective usage time after mixing. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a bottom-rotating double-compartment container. Before the materials are mixed, the transparent bottle body allows for a visual display of the materials, making it easy for users to determine whether the materials have been mixed. After the materials are used, the container achieves a good light-blocking effect through the full coverage of the bottom and outer lids, extending the storage and effective use time of the materials.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a bottom-rotating double-compartment container, including an outer cover, a bottle body, a piston, a base, and a bottom cover. The bottle body is a transparent bottle with an inclined guide groove on its outer side. The piston is an axially penetrating hollow structure. The piston and the base are engaged to form a sealed compartment. The base is engaged with the bottom of the bottle body and places the piston inside the bottle body. The bottom cover is fitted onto the lower part of the bottle body. When the bottom cover rotates upward along the inclined guide groove, it synchronously drives the piston upward, causing the piston to separate from the base until the bottom cover and the outer cover abut against each other and completely cover the outer surface of the bottle body.
[0006] Furthermore, the piston has a conical sleeve inside, and a retaining ring is provided at the lower end of the conical sleeve. The base has an annular cover with a retaining groove. The conical sleeve is inserted into the annular cover and engages with the retaining groove through the retaining ring, so that the piston is engaged with the base.
[0007] Furthermore, the piston has at least three support blocks distributed circumferentially at its bottom end, and the base has the same number of clearance holes as the support blocks. When the piston is engaged with the base, the support blocks are inserted into the clearance holes.
[0008] Furthermore, the bottom cover is provided with a support column inside. When the bottom cover rotates upward along the inclined guide groove, the support column will push the support block upward, causing the conical sleeve to separate from the annular cover.
[0009] Furthermore, the inclined guide groove is divided into a first limiting section, a sliding section, and a second limiting section. A limiting rib is provided at the connection between the first limiting section and the sliding section to restrict the sliding of the bottom cover before rotation. A one-way limiting buckle is provided at the connection between the sliding section and the second limiting section to restrict the sliding of the bottom cover back after it is tightened.
[0010] Furthermore, the outer side of the bottle body is provided with a vertical guide groove, and the inner side of the bottom cover is provided with a boss. The bottom cover slides into the vertical guide groove through the boss for fixed installation. When the bottom cover rotates upward along the inclined guide groove, the bottom cover slides into the inclined guide groove through the inclined platform set between the vertical guide groove and the inclined guide groove and continues to rotate upward until the bottom cover and the outer cover abut together and completely cover the outer surface of the bottle.
[0011] Furthermore, the piston is provided with a first annular contact wall and a second annular contact wall on its outer side. The first annular contact wall and the second annular contact wall abut against the inner surface of the bottle and are distributed in a mirror symmetrical manner.
[0012] Furthermore, the base is provided with a third annular contact wall. When the piston is engaged with the base, the third annular contact wall abuts against the inner side of the piston, so that the piston and the base form a sealed chamber.
[0013] Furthermore, the base has a snap-fit protrusion on its outer side, and the bottle body has a snap-fit groove that snaps into the snap-fit protrusion.
[0014] Furthermore, the bottom-rotating dual-compartment container also includes a dropper assembly, which consists of a cap, shoulder sleeve, rubber head, inner cap, stopper, and glass tube.
[0015] The present invention provides a bottom-rotating dual-compartment container, which has the following advantages compared with the prior art: First, it adopts a dual-compartment structure design, constructing an independent sealed compartment by setting a piston and a base at the bottom of the bottle. When the user uses it, the bottom cover is rotated to rotate upward along the inclined guide groove of the bottle, causing the piston and the base to separate, thus achieving controllable mixing of the contents in the sealed compartment and the contents in the bottle. Second, as the bottom cover rotates upward in coordination, its displacement trajectory and the outer cover form a dynamic visual effect transformation. That is, before the contents are mixed, the contents are visualized through the transparent area of the bottle, making it easy for the user to determine whether the contents have been mixed. After the user uses the container, the full coverage of the bottom cover and the outer cover achieves a good light-blocking effect, extending the storage and effective use time of the contents.
[0016] Other features and advantages of this invention will become apparent from the following detailed description, or may be learned in part by practice of the invention.
[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the present invention. Attached Figure Description
[0018] Figure 1 This is an exploded view of an embodiment of the present invention;
[0019] Figure 2 This is a cross-sectional view of the container before use according to an embodiment of the present invention;
[0020] Figure 3 This is a schematic diagram of the lower half of the cross-sectional structure of an embodiment of the present utility model;
[0021] Figure 4 This is a top view of the bottle body according to an embodiment of the present invention;
[0022] Figure 5 This is a partial cross-sectional perspective view of the piston in an embodiment of the present invention.
[0023] Figure 6 This is a partial cross-sectional perspective view of the base of an embodiment of the present utility model;
[0024] Figure 7 This is a partial cross-sectional perspective view of the bottom cover of an embodiment of the present utility model.
[0025] Figure 8 This is a schematic diagram of the bottom cover rotating upwards in an embodiment of the present invention;
[0026] Figure 9 This is a cross-sectional view of the container after use according to an embodiment of the present invention;
[0027] The numbers and names in the attached diagram are as follows: 1. Outer cap; 2. Dropper assembly; 201. Press cap; 202. Shoulder sleeve; 203. Rubber tip; 204. Inner cap; 205. Stopper; 206. Glass tube; 3. Bottle body; 301. Inclined guide groove; 3011. First limiting section; 3012. Sliding section; 3013. Second limiting section; 3014. Limiting rib; 3015. One-way limiting buckle; 302. Snapping groove 303, Vertical guide groove; 304, Inclined platform; 4, Piston; 401, Conical sleeve; 4011, Snap ring; 402, First annular contact wall; 403, Second annular contact wall; 404, Support block; 5, Base; 501, Annular cover; 5011, Snap groove; 502, Third annular contact wall; 503, Clearance hole; 504, Snap-fit protrusion; 6, Bottom cover; 601, Boss; 602, Support column. Detailed Implementation
[0028] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.
[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to fixed connections (such as snap-fit, threaded connections, riveting, welding), detachable connections, or integral connections; of course, they can also be mechanical connections or electrical connections; furthermore, they can be direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example
[0031] like Figures 1-9 As shown, a bottom-rotating double-compartment container includes an outer cover 1, a bottle body 3, a piston 4, a base 5, and a bottom cover 6. The bottle body 3 is a transparent bottle with an inclined guide groove 301 on its outer side. The piston 4 is an axially penetrating hollow structure with a conical sleeve 401 that is larger at the top and smaller at the bottom inside. The piston 4 and the base 5 engage to form a sealed compartment, which can store material separately. The base 5 engages with the bottom of the bottle body 3 and places the piston 4 inside the bottle body 3. The bottom cover 6 is fitted onto the lower part of the bottle body 3 and can rotate upward along the inclined guide groove 301 on the outer side of the bottle body 3. As the bottom cover 6 moves upward, it will drive the piston 4 upward as well, thereby separating the conical sleeve 401 from the base 5, until the bottom cover and the outer cover abut against each other and completely cover the outer surface of the bottle body, at which point the movement stops.
[0032] Furthermore, the piston 4 is provided with a first annular contact wall 402 and a second annular contact wall 403 on its outer side. The first annular contact wall 402 and the second annular contact wall 403 are in direct contact with the bottle body 3, and the first annular contact wall 402 and the second annular contact wall 403 are distributed in a mirror symmetrical manner.
[0033] Furthermore, the lower end of the conical sleeve 401 of the piston 4 is provided with a retaining ring 4011, and the base 5 is provided with an annular cover 501. The conical sleeve 401 is inserted into the annular cover 501, and the retaining ring 4011 engages with the retaining groove 5011 provided in the annular cover 501, so that the piston 4 and the base 5 are fastened together.
[0034] Furthermore, the base 5 is provided with a third annular contact wall 502. When the piston 4 is engaged with the base 5, the third annular contact wall 502 is in sealed contact with the inner side of the piston 4, so that the piston 4 and the base 5 form a sealed chamber.
[0035] Furthermore, the piston 4 is provided with a plurality of (at least 3) support blocks 404 distributed circumferentially, and the base 5 is provided with the same number (at least 3) of clearance holes 503 as the support blocks 404. When the piston 4 is engaged with the base 5, the support blocks 404 are placed in the clearance holes 503.
[0036] Furthermore, the base 5 has a snap-fit protrusion 504 on its outer side, and the bottle body 3 has a corresponding fastening groove 302.
[0037] Furthermore, the outer side of the bottle body 3 is provided with a vertical guide groove 303 and an inclined guide groove 301, and the inner side of the bottom cover 6 is provided with a boss 601. When the bottom cover 6 is installed, the boss 601 is slid into the vertical guide groove 303, and then slides into the inclined guide groove 301 through the inclined platform 304 provided between the vertical guide groove 303 and the inclined guide groove 301, so that the bottom cover 6 is fitted onto the bottom of the bottle body 3.
[0038] Furthermore, the inclined guide groove 301 of the bottle body 3 is divided into a first limiting section 3011, a sliding section 3012, and a second limiting section 3013. A limiting rib 3014 is provided between the first limiting section 3011 and the sliding section 3012, and a one-way limiting buckle 3015 is provided between the sliding section 3012 and the second limiting section 3013. The limiting rib 3014 restricts the sliding of the bottom cap 6 relative to the bottle body 3 when the user does not rotate the bottom cap 6 forcefully. The one-way limiting buckle 3015 restricts the bottom cap 6 from sliding back after it is screwed upwards.
[0039] Furthermore, the bottom cover 6 is provided with a support column 602 inside. When the bottom cover 6 rotates upward, the support column 602 will push the support block 404 of the piston 4 upward, thereby causing the conical sleeve 401 of the piston 4 to separate from the annular cover 501 of the base 5, and thus allowing the separately stored material to mix with the material in the bottle.
[0040] Furthermore, an outer cover 1 is provided on the top of the bottle body 3, and the outer cover 1 is fitted onto the bottle body 3 to cover and block light.
[0041] Furthermore, the bottom-rotating dual-compartment container also includes a dropper assembly 2. The bottle body 3 can be used with the dropper assembly 2. The dropper assembly 2 includes a cap 201, a shoulder sleeve 202, a rubber head 203, an inner cap 204, a stopper 205, and a glass tube 206.
[0042] like Figures 1-9 As shown, firstly, the container adopts a dual-compartment structure design. An independent, sealed compartment is constructed by setting the piston 4 at the bottom of the bottle body 3 and the base 5. When in use, the user rotates the bottom cover 6, causing it to rotate upwards along the inclined guide groove 301 of the bottle body 3. The support column 602 inside the bottom cover 6 pushes the support block 404 of the piston 4 upwards, separating the piston 4 from the base 5, thus achieving controllable mixing of the material in the sealed compartment and the material in the bottle. Secondly, as... Figure 8As shown, during the upward rotational movement of the bottom cover 6, its displacement trajectory forms a dynamic visual effect transformation with the outer cover 1. That is, before the material is mixed, the material is visualized through the area exposed by the transparent bottle 3, making it easy for users to determine whether the material has been mixed. After the user activates and uses the product, the bottom cover 6 and the outer cover 1 fully cover the product to achieve a light-proof effect, extending the storage and effective use time of the material.
[0043] It should be emphasized that the above embodiments are merely preferred embodiments of the present invention used to illustrate the technical solutions of the present invention, and are not intended to limit the invention, nor are they intended to limit the patent scope of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention. That is to say, any changes or refinements made to the main design concept and spirit of the present invention that are not of substantial significance, but whose technical problems are still consistent with the present invention, should be included within the protection scope of the present invention. In addition, the direct or indirect application of the technical solutions of the present invention to other related technical fields are similarly included within the patent protection scope of the present invention.
Claims
1. A bottom rotating dual cartridge container comprising an outer cap, a bottle body, a piston, a base, a bottom cap, characterized in that: The bottle body is a transparent bottle and is provided with an inclined guide groove on the outside, the piston is a hollow structure penetrating in the axial direction, the piston is clamped with the base to form a sealed chamber, the base is clamped with the bottom of the bottle body and the piston is placed in the bottle body, the bottom cover is sleeved on the lower part of the bottle body, when the bottom cover rotates upward along the inclined guide groove, the piston is synchronously driven to move upward, the piston is separated from the base, until the bottom cover and the outer cover abut and completely cover the outer surface of the bottle body.
2. The base-rotating dual-bin container of claim 1, wherein: The piston is internally provided with a conical sleeve, the lower end of the conical sleeve is provided with a clamping ring, the base is provided with an annular cover, the annular cover is provided with a clamping groove, the conical sleeve is inserted into the annular cover and is clamped with the clamping groove through the clamping ring, so that the piston is clamped with the base.
3. The bottom-rotating dual-bin container of claim 2, wherein: The bottom end of the piston is provided with at least three support blocks distributed in the circumferential direction, the base is provided with the same number of avoiding holes as the support blocks, when the piston is clamped with the base, the support blocks are inserted into the avoiding holes.
4. The bottom-rotating dual-bin container of claim 3, wherein: The inside of the bottom cover is provided with a support column, when the bottom cover rotates upward along the inclined guide groove, the support column will push the support block upward, so that the conical sleeve is separated from the annular cover.
5. The bottom-rotating dual-bin container of claim 4, wherein: The inclined guide groove is divided into a first limiting section, a sliding section and a second limiting section, a limiting convex rib for limiting the forward sliding of the bottom cover is arranged at the connection between the first limiting section and the sliding section, and a one-way limiting buckle for limiting the backward sliding of the bottom cover after being screwed is arranged at the connection between the sliding section and the second limiting section.
6. The bottom-rotating dual-bin container of claim 5, wherein: The outside of the bottle body is provided with a vertical guide groove, the inside of the bottom cover is provided with a boss, the bottom cover is fixedly installed by being slid into the vertical guide groove through the boss; when the bottom cover rotates upward along the inclined guide groove, the bottom cover is slid into the inclined guide groove through the inclined table arranged between the vertical guide groove and the inclined guide groove and continues to rotate upward, until the bottom cover and the outer cover abut and completely cover the outer surface of the bottle body.
7. The bottom-rotating dual-bin container of claim 6, wherein: The outside of the piston is provided with a first annular contact wall and a second annular contact wall, the first annular contact wall and the second annular contact wall abut the inner surface of the bottle body and are mirror-symmetrically distributed.
8. The bottom-rotating dual-bin container of claim 7, wherein: The base is provided with a third annular contact wall, when the piston is clamped with the base, the third annular contact wall abuts the inside of the piston, so that the piston and the base form a sealed chamber.
9. The base-rotating dual-bin container according to any one of claims 1 to 8, characterized in that: The outside of the base is provided with a clamping protrusion, the bottle body is provided with a buckling groove clamped with the clamping protrusion.
10. The base-rotating dual-bin container according to any one of claims 1 to 8, characterized in that: The bottom rotating double-chamber container further comprises a dropper assembly composed of a press cap, a shoulder sleeve, a rubber head, an inner cover, a plug and a glass tube.