Replaceable cosmetic container and collinear sealing structure

Abstract

The utility model relates to the field of cosmetic containers, in particular to a replaceable cosmetic container and a collinear sealing structure. A replaceable cosmetic container collinear sealing structure comprises an outer bottle, an emulsion conveying mechanism and a bottle cap, the outer bottle is provided with a containing cavity used for containing a replaceable inner bottle, the liquid inlet end of the emulsion conveying mechanism is connected with the outer bottle through a first locking mechanism, the bottle cap is arranged at the coating end of the emulsion conveying mechanism in a covering mode, and the emulsion conveying mechanism is connected with the bottle cap through a second locking mechanism. The bottle cap is connected with the emulsion conveying mechanism through a second locking mechanism, the unlocking force direction of the first locking mechanism is the same as that of the second locking mechanism, and second unlocking force needed by unlocking of the second locking mechanism is smaller than first unlocking force needed by unlocking of the first locking mechanism. According to the collinear sealing structure, the unlocking force required for unlocking the bottle cap is consciously set to be smaller than the unlocking force required for unlocking, taking out and replacing the inner bottle, so that the emulsion conveying mechanism does not rotate along with the bottle cap to cause liquid leakage when the bottle cap is opened in daily use, and the use experience feeling of consumers is improved.

Description

Technical Field

[0001] This utility model relates to the field of cosmetic containers, and in particular to a replaceable cosmetic container and a collinear sealing structure. Background Technology

[0002] Based on the EU's plastic ban, the various cosmetic containers currently used in the EU have gradually been replaced by a long-term metal outer bottle with a replaceable disposable inner bottle structure. The inner bottle is made of non-plastic products to reduce the cost of using the products for consumers.

[0003] To facilitate the removal of the inner bottle, most components of these replaceable lotion bottles are connected by threads, which also provide reliable pre-tightening force to seal the interface area. Some replaceable lotion bottles have a cap that presses down on the dispensing area to seal the outlet; therefore, the cap also uses a screw connection. This connection method is simple and does not affect the required clamping force for sealing due to repeated disassembly. For example, the ball bearing packaging bottle (patent PCT / CN2023 / 118942) requires the internal structure of the cap to press the ball bearing for sealing when not in use. This type of structure results in a larger thread tightening force. During normal use, opening the bottle can easily cause the threads between the outer bottle and the cap to rotate, leading to the need to disassemble the replaceable lotion bottle for non-disassembly replacement, causing inconvenience.

[0004] The existing Chinese patent CN220001091U, "Replaceable Cosmetic Container and Replaceable Inner Bottle," discloses a structure that restricts the rotation of the inner liner. To prevent rotation problems, a spiral guide groove and a limiting component are set to achieve relative fixation between the inner liner and the outer bottle. However, this restriction method is not entirely applicable to some replaceable lotion bottles. Therefore, a lotion bottle sealing structure with high reliability that can be applied to various lotion bottles is needed. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a replaceable cosmetic container collinear sealing structure. In this structure, when the sealing structure design of the cosmetic itself causes the unlocking force of the two locking positions to be in the same direction, the unlocking force required to unlock the cap is intentionally set to be less than the unlocking force required to unlock and remove the replacement inner bottle. This ensures that the lotion delivery mechanism will not leak when the cap is opened during daily use, thus improving the user experience.

[0006] This utility model is implemented as follows: a replaceable cosmetic container collinear sealing structure includes an outer bottle, an emulsion delivery mechanism, and a cap. The outer bottle is provided with a cavity for placing a replacement inner bottle. The inlet end of the emulsion delivery mechanism is connected to the outer bottle through a first locking mechanism. The cap is fitted onto the coating end of the emulsion delivery mechanism, and the cap is connected to the emulsion delivery mechanism through a second locking mechanism. The unlocking forces of the first and second locking mechanisms are in the same direction, and the second unlocking force required to unlock the second locking mechanism is less than the first unlocking force required to unlock the first locking mechanism.

[0007] The first locking mechanism and the second locking mechanism are threaded locking mechanisms; the first locking mechanism includes a first external threaded ring and a first internal threaded ring, the first external threaded ring is disposed on the outer bottle, and the first internal threaded ring is disposed on the side of the emulsion delivery mechanism near the liquid inlet end, the emulsion delivery mechanism is screwed onto the outer bottle; the second locking mechanism includes a second external threaded ring and a second internal threaded ring, the second external threaded ring is disposed on the side of the emulsion delivery mechanism near the coating end, the second internal threaded ring is disposed on the bottle cap, the bottle cap is screwed onto the emulsion delivery mechanism; the second unlocking rotational force F2 between the bottle cap and the second external threaded ring is less than the first unlocking rotational force F1 between the emulsion delivery mechanism and the first external threaded ring.

[0008] The thread of the second internal thread ring or the second external thread ring is composed of multiple thread segments, with a gap between each thread segment.

[0009] The second internal thread ring or the second external thread ring is a half thread.

[0010] A toothed ring is provided below the first internal threaded ring, and a locking element that cooperates with the toothed ring is provided at the opening of the outer bottle.

[0011] The locking element is a locking point.

[0012] The gear ring has a missing tooth opening, and the locking element is a stop protrusion that cooperates with the missing tooth opening.

[0013] The edge of the missing tooth opening has a downward-extending protrusion.

[0014] The first locking mechanism and the second locking mechanism are either pressure cap sealing locking mechanisms or magnetic sealing locking mechanisms; with the emulsion conveying path of the emulsion conveying mechanism as the axis, the unlocking force required by the second locking mechanism along the axis is less than the unlocking force required by the first locking mechanism along the axis.

[0015] The capping sealing and locking mechanism includes a retaining ring assembly composed of two cooperating clamping protrusions; the second unlocking pull force F4 required to unlock the second retaining ring assembly between the emulsion delivery mechanism and the cap is less than the first unlocking pull force F3 required to unlock the first retaining ring assembly between the outer bottle and the emulsion delivery mechanism.

[0016] A rotary locking mechanism is also provided between the outer bottle and the emulsion delivery mechanism. The rotary locking mechanism includes several vertical ribs, which are arranged in a circular array parallel to the X-axis on the outer ring of the outer bottle and the inner ring of the emulsion delivery mechanism. The gap between the vertical ribs matches the width of the root of the vertical rib.

[0017] The magnetic sealing and locking mechanism is a magnetic metal ring assembly. The openings of the bottle cap and the emulsion delivery mechanism are respectively provided with magnets and metal rings from the magnetic metal ring assembly; the magnetic attraction force of the first locking mechanism is greater than the magnetic attraction force of the second locking mechanism.

[0018] A replaceable cosmetic container includes a collinear sealing structure. The emulsion delivery mechanism includes a connector and a ball bearing. The connector has an emulsion delivery channel with a sealing port. Part of the ball bearing is located inside the emulsion delivery channel and engages with the sealing port, while the other part is exposed to form a coating end. When the cap is closed, the cap applies a pressing force directly or indirectly to the ball bearing to seal the sealing port.

[0019] The bottle cap includes an outer cap and an inner cap, the second locking mechanism is partially disposed on the inner cap, and the outer wall surface of the outer cap is on the same plane as the outer wall surface of the outer bottle.

[0020] This utility model features a replaceable cosmetic container with a collinear sealing structure. When the sealing structure of the cosmetic itself results in the unlocking force of the two locking positions being in the same direction, the unlocking force required to unlock the cap is intentionally set to be less than the unlocking force required to unlock and remove the replacement inner bottle. This ensures that the lotion delivery mechanism will not leak when the cap is opened during daily use, thus improving the user experience. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the collinear sealing structure of the replaceable cosmetic container of this utility model;

[0022] Figure 2 This is a schematic diagram of the replaceable cosmetic structure according to Embodiment 1 of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure when the first locking mechanism in Embodiment 2 is a retaining ring assembly;

[0024] Figure 4This is a schematic diagram of the structure when the second locking mechanism is a retaining ring assembly in Embodiment 2;

[0025] Figure 5 This is a schematic diagram of the structure when the second locking mechanism in Embodiment 2 is a magnetic sealing locking mechanism;

[0026] Figure 6 A schematic diagram of an embodiment of a sealing structure for reducing the second unlocking rotational force in a threaded locking mechanism;

[0027] Figure 7 A schematic diagram of an embodiment of a sealing structure that enhances the first unlocking rotational force in a threaded locking mechanism;

[0028] Figure 8 This is a structural diagram showing the installation of vertical ribs in Example 2;

[0029] In the diagram: 1 Outer bottle, 2 Replacement inner bottle, 3 Emulsion delivery mechanism, 4 Bottle cap, 5 First locking mechanism, 6 Second locking mechanism, 11 First external threaded ring, 12 Locking point, 13 Stop protrusion, 31 Second external threaded ring, 32 Sealing port, 33 First internal threaded ring, 34 Toothed ring, 35 Missing tooth opening, 36 Connector, 37 Ball bearing, 351 Protrusion, 41 Outer cap, 42 Inner cap, 43 Second internal threaded ring, 51 First retaining ring assembly, 52 Vertical rib, 61 Second retaining ring assembly, 62 Magnetic metal ring assembly, 63 Thread gap. Detailed Implementation

[0030] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the description of the present invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims. Example

[0031] like Figure 1 As shown, a replaceable cosmetic container collinear sealing structure includes an outer bottle 1, an emulsion delivery mechanism 3, and a cap 4. The outer bottle 1 is provided with a cavity for placing a replacement inner bottle 2. The liquid inlet end of the emulsion delivery mechanism 3 is connected to the outer bottle 1 through a first locking mechanism 5. The cap 4 is fitted onto the coating end of the emulsion delivery mechanism 3, and the cap 4 is connected to the emulsion delivery mechanism 3 through a second locking mechanism 6. The unlocking force directions of the first locking mechanism 5 and the second locking mechanism 6 are the same, and the second unlocking force required to unlock the second locking mechanism 6 is less than the first unlocking force required to unlock the first locking mechanism 5.

[0032] In this utility model, such as Figure 2As shown, a replaceable cosmetic container includes a collinear sealing structure; and the emulsion delivery mechanism 3 includes a connector 36 and a ball bearing 37. The connector 36 has an emulsion delivery channel with a sealing port 32. Part of the ball bearing 37 is located within the emulsion delivery channel and engages with the sealing port 32, while the other part is exposed to form a coating end. When the cap 4 is closed, the cap 4 applies pressure to the ball bearing 37 directly or indirectly to seal the sealing port 32. In use, the cap 4 is removed, and the replaceable cosmetic container is inverted. At this time, the ball bearing 37 is in a free state, and the sealing port 32 naturally opens. The emulsion stored in the replacement inner bottle 2 flows from the emulsion delivery mechanism 3 to the ball bearing 37. As the ball bearing 37 rotates, it naturally applies the emulsion to the user's skin using the coating end. When the cosmetic lotion in the replacement inner bottle 2 is used up, the lotion delivery mechanism 3 can be removed and the replacement inner bottle 2 can be replaced. Under normal circumstances, since the replacement inner bottle 2 needs to be replaced and discarded frequently, in order to meet environmental protection requirements, the replacement inner bottle 2 is made of biodegradable fluorine-free material.

[0033] In this utility model, preferably, the bottle cap 4 includes an outer cap 41 and an inner cap 42, the second locking mechanism is partially disposed on the inner cap 42, and the outer wall surface of the outer cap 41 is on the same plane as the outer wall surface of the outer bottle 1, making the overall shape of the product more aesthetically pleasing.

[0034] In addition, based on the elastic force of the emulsion delivery mechanism 3 itself, the cap 4 can directly squeeze the ball 37 or indirectly squeeze the ball 37 by squeezing the edge of the opening of the emulsion delivery mechanism 3, so that the ball 37 can press the sealing port 32, thereby sealing the sealing port 32 and preventing leakage when not in use. Example

[0035] like Figure 2As shown, in this embodiment, the first locking mechanism and the second locking mechanism are threaded locking mechanisms; the first locking mechanism includes a first external threaded ring 11 and a first internal threaded ring 33. The first external threaded ring 11 is disposed on the outer bottle 1, and the first internal threaded ring 33 is disposed on the side of the emulsion delivery mechanism 3 near the liquid inlet end. The emulsion delivery mechanism 3 is screwed onto the outer bottle 1; the second locking mechanism includes a second external threaded ring 31 and a second internal threaded ring 43. The second external threaded ring 31 is disposed on the side of the emulsion delivery mechanism 3 near the coating end, and the second internal threaded ring 43 is disposed on the bottle cap 4. The bottle cap 4 is screwed onto the emulsion delivery mechanism 3; the second unlocking rotational force F2 between the bottle cap 4 and the second external threaded ring 31 is less than the first unlocking rotational force between the emulsion delivery mechanism 3 and the first external threaded ring 11. In this case, when unscrewing the bottle cap 4, because F2 < F1 will not cause the emulsion delivery mechanism 3 to rotate, which can effectively prevent the emulsion delivery mechanism 3 from being accidentally opened, affecting the sealing of the replacement inner bottle 2 by the emulsion delivery mechanism 3, avoiding leakage, and ensuring the product's shelf life.

[0036] The technical requirement of F2 < F1 is achieved by reducing F2: In this embodiment, as follows: Figure 6 As shown, the thread of the second internal thread ring 43 or the second external thread ring 31 can be configured to be composed of multiple thread segments with a gap between each thread segment. This thread gap 63 reduces the contact area between the second external thread ring 31 and the second internal thread ring 43, thereby reducing the second unlocking rotation force F2. Similarly, the second internal thread ring 43 or the second external thread ring 31 can be configured as a half thread to achieve the same purpose.

[0037] The technical requirement of F2 < F1 is achieved by increasing F1: As another implementation method, in this embodiment, such as Figure 7 As shown, the emulsion conveying mechanism 3 is provided with a first internal thread ring 33 that mates with the first external thread ring 11. Below the first internal thread ring 33, a toothed ring 34 is provided. The opening of the outer bottle 1 is provided with a locking element that mates with the toothed ring 34. It should be noted that the toothed ring 34 is a toothed ring naturally required for demolding in conventional processing and does not require special processes or designs, so it has no impact on production costs. In this embodiment, the locking element is a locking point 12. When rotating to lock, the locking point 12 locks onto the toothed ring 34 to increase the rotational force required for unlocking.

[0038] In addition, in this embodiment, the locking member can also be a stop protrusion 13; the toothed ring 34 is provided with a toothed opening 35 that cooperates with the stop protrusion 13; when rotating to lock, the stop protrusion 13 is locked in the toothed opening 35 to increase the rotational force required for unlocking; as a priority, to further increase the unlocking rotational force required for the first threaded group, a downwardly extending protrusion 351 is provided at the edge of the toothed opening 35, and the protrusion 351 increases the locking force on the stop protrusion 13 to achieve the increase of the unlocking rotational force required for unlocking.

[0039] In this embodiment, the above-mentioned methods of increasing the first unlocking rotational force and decreasing the second unlocking rotational force can be used individually or in combination, and all belong to the technical solutions to be protected in this utility model. Example

[0040] like Figure 3 , 4 As shown in Figures 5 and 6, the first locking mechanism and the second locking mechanism are either pressure cap sealing locking mechanisms or magnetic sealing locking mechanisms; with the emulsion conveying path of the emulsion conveying mechanism 3 as the axis, the unlocking force required by the second locking mechanism along the axis is less than the unlocking force required by the first locking mechanism along the axis.

[0041] like Figure 3 , 4 As shown, in one implementation, the cap sealing and locking mechanism includes a retaining ring assembly composed of two cooperating retaining protrusions; the second unlocking pull force F4 required to unlock the second retaining ring assembly 61 between the emulsion delivery mechanism 3 and the bottle cap 4 is less than the first unlocking pull force F3 required to unlock the first retaining ring assembly 51 between the outer bottle 1 and the emulsion delivery mechanism 3; at this time, the emulsion delivery mechanism 3 will not be disassembled when the bottle cap 4 is pulled out, ensuring the reliability of use;

[0042] like Figure 8 As shown, when the first locking mechanism is a mechanism like the first retaining ring assembly 51 that is unlocked by force along the axis, it cannot provide sufficient rotational damping force during the unlocking and locking process, which may cause rotation between the outer bottle 1 and the emulsion delivery mechanism 3 during use, affecting the user experience.

[0043] Therefore, in this embodiment, a rotation locking mechanism is also provided between the outer bottle 1 and the emulsion delivery mechanism 3. Preferably, the rotation locking mechanism includes a plurality of vertical ribs 52, which are arranged in a circular array parallel to the X-axis on the outer ring of the outer bottle 1 and the inner ring of the emulsion delivery mechanism 3. The gap between the vertical ribs 52 matches the width of the root of the vertical rib 52. After the retaining ring assembly is tightened, each vertical rib 52 naturally meshes like gears, locking the degree of freedom of rotation of the outer bottle 1 and the emulsion delivery mechanism 3 around the X-axis. The specific locking method disclosed in this patent is only one embodiment and does not indicate that the specific locking structure is limited. Other embodiments that can limit the degree of freedom of rotation of the outer bottle 1 and the emulsion delivery mechanism 3 around the X-axis should also be protected by this patent as equivalent technical features.

[0044] like Figure 5 As shown, as another implementation, the magnetic sealing and locking mechanism is a magnet metal ring assembly 62, and the openings of the bottle cap 4 and the emulsion delivery mechanism 3 are respectively provided with magnets and metal rings in the magnet metal ring assembly 62; the magnetic attraction force of the first locking mechanism is greater than the magnetic attraction force of the second locking mechanism.

[0045] In this embodiment, the pressure cap sealing locking mechanism and the magnetic sealing locking mechanism can be freely combined and applied to the first locking mechanism and the second locking mechanism. The final four combination schemes all belong to the technical solutions to be protected in this utility model.

Claims

1. A replaceable cosmetic container with a collinear sealing structure, comprising an outer bottle (1), an emulsion delivery mechanism (3), and a cap (4), wherein the outer bottle (1) is provided with a cavity for placing a replacement inner bottle (2), the inlet end of the emulsion delivery mechanism (3) is connected to the outer bottle (1) via a first locking mechanism (5), the cap (4) is fitted onto the coating end of the emulsion delivery mechanism (3), and the cap (4) is connected to the emulsion delivery mechanism (3) via a second locking mechanism (6), characterized in that: The unlocking forces of the first locking mechanism (5) and the second locking mechanism (6) are in the same direction, and the second unlocking force required for the second locking mechanism (6) to unlock is less than the first unlocking force required for the first locking mechanism (5) to unlock.

2. The replaceable cosmetic container collinear sealing structure as described in claim 1, characterized in that: The first locking mechanism and the second locking mechanism are threaded locking mechanisms; the first locking mechanism includes a first external threaded ring (11) and a first internal threaded ring (33), the first external threaded ring (11) is disposed on the outer bottle (1), the first internal threaded ring (33) is disposed on the side of the emulsion conveying mechanism (3) near the liquid inlet end, and the emulsion conveying mechanism (3) is connected to the outer bottle (1) by threaded tightening; the second locking mechanism includes a second external threaded ring (31) and a second internal threaded ring (43), the second external threaded ring (31) is disposed on the side of the emulsion conveying mechanism (3) near the coating end, and the second internal threaded ring (43) is disposed on the bottle cap (4), and the bottle cap (4) is connected to the emulsion conveying mechanism (3) by threaded tightening; the second unlocking rotational force F2 between the bottle cap (4) and the second external threaded ring (31) is less than the first unlocking rotational force F1 between the emulsion conveying mechanism (3) and the first external threaded ring (11).

3. The replaceable cosmetic container collinear sealing structure as described in claim 2, characterized in that: The thread of the second internal thread ring (43) or the second external thread ring (31) is composed of multiple thread segments, with a gap between each thread segment.

4. The replaceable cosmetic container collinear sealing structure as described in claim 2, characterized in that: The second internal thread ring (43) or the second external thread ring (31) is a half thread.

5. The replaceable cosmetic container collinear sealing structure as described in claim 2, characterized in that: A toothed ring (34) is provided below the first internal threaded ring (33), and a locking element that cooperates with the toothed ring (34) is provided at the opening of the outer bottle (1).

6. The replaceable cosmetic container collinear sealing structure as described in claim 5, characterized in that: The locking element is a locking point (12).

7. The replaceable cosmetic container collinear sealing structure as described in claim 5, characterized in that: The toothed ring (34) is provided with a toothed opening (35), and the locking member is a stop protrusion (13) that cooperates with the toothed opening (35).

8. The replaceable cosmetic container collinear sealing structure as described in claim 7, characterized in that: The edge of the notched opening (35) is provided with a downwardly extending protrusion (351).

9. The replaceable cosmetic container collinear sealing structure as described in claim 1, characterized in that: The first locking mechanism and the second locking mechanism are pressure cap sealing locking mechanisms or magnetic sealing locking mechanisms; with the emulsion conveying path of the emulsion conveying mechanism (3) as the axis, the unlocking force required by the second locking mechanism along the axis is less than the unlocking force required by the first locking mechanism along the axis.

10. The replaceable cosmetic container collinear sealing structure as described in claim 9, characterized in that: The capping sealing and locking mechanism includes a retaining ring assembly consisting of two mutually cooperating pressing protrusions; the second unlocking pull force F4 required for the second retaining ring assembly (61) between the emulsion delivery mechanism (3) and the bottle cap (4) to unlock is less than the first unlocking pull force F3 required for the first retaining ring assembly (51) between the outer bottle (1) and the emulsion delivery mechanism (3) to unlock.

11. The replaceable cosmetic container collinear sealing structure as described in claim 10, characterized in that: A rotary locking mechanism is also provided between the outer bottle (1) and the emulsion delivery mechanism (3). The rotary locking mechanism includes a plurality of vertical ribs (52). The plurality of vertical ribs (52) are arranged in a circular array parallel to the X-axis on the outer ring of the outer bottle (1) and the inner ring of the emulsion delivery mechanism (3). The gap between the vertical ribs (52) matches the width of the root of the vertical ribs (52).

12. The replaceable cosmetic container collinear sealing structure as described in claim 9, characterized in that: The magnetic sealing and locking mechanism is a magnet metal ring assembly (62). The openings of the bottle cap (4) and the emulsion delivery mechanism (3) are respectively provided with magnets and metal rings in the magnet metal ring assembly (62); the magnetic attraction force of the first locking mechanism is greater than the magnetic attraction force of the second locking mechanism.

13. A replaceable cosmetic container, comprising the collinear sealing structure of a replaceable cosmetic container as described in any one of claims 1 to 12, characterized in that: The emulsion delivery mechanism (3) includes a connector (36) and a ball (37). The connector (36) has an emulsion delivery channel with a sealing port (32). Part of the ball (37) is located in the emulsion delivery channel and cooperates with the sealing port (32), while the other part is exposed to form a coating end. When the bottle cap (4) is closed, the bottle cap (4) applies a pressing force to the ball (37) directly or indirectly to seal the sealing port (32).

14. The replaceable cosmetic container as described in claim 13, characterized in that: The bottle cap (4) includes an outer cap (41) and an inner cap (42). The second locking mechanism is partially disposed on the inner cap (42). The outer wall surface of the outer cap (41) is on the same plane as the outer wall surface of the outer bottle (1).

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