Device for dispensing liquid products

The device addresses the need for improved formulation delivery and massaging functionality by using a sliding cap mechanism with audible feedback and a massage applicator, ensuring efficient and user-friendly liquid product application.

JP2025540460APending Publication Date: 2025-12-11LOREAL SA
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Patent Information

Application Number
JP2025536353
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2022-12-20
Publication Date
2025-12-11

AI Technical Summary

Technical Problem

Existing devices for dispensing liquid products, particularly in professional settings, lack adequate formulation delivery and well-established massaging functionality.

Method used

A device with an externally threaded cap and inner cap system that includes a sliding mechanism and audible click for precise control, combined with a massage applicator featuring elastomeric material and multiple nozzles for uniform distribution and gentle massaging sensation.

Benefits of technology

Provides effective formulation delivery with enhanced massaging functionality, promoting blood circulation and ensuring easy operation with tactile feedback and one-handed use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to a device for dispensing a liquid product, comprising: a container (2) including an opening through which the liquid product is dispensed; an externally threaded cap (3) configured to be mounted on the container (2); an internal cap (4) engageable with the externally threaded cap (3) and movable on the externally threaded cap from an open position in which the liquid product is dispensed from the container (2) to a closed position in which the liquid product is prevented from flowing out; and an applicator (4) connected to the internal cap (4) and configured to dispense the liquid product therefrom. 5), characterized in that a channel (321) is formed on a portion of the outer threaded cap (3) for engaging with the inner cap (4), and a slider (413) is formed on the inner cap (4), the slider (413) sliding along the channel (321) during rotation of the inner cap (4) relative to the outer threaded cap (3) between an open position and a closed position, and during rotation towards the open position, the inner cap (4) moves axially away from the outer threaded cap (3).
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Description

[Technical Field]

[0001] FIELD OF THE INVENTION The present invention relates generally to devices for dispensing liquid products. [Background technology]

[0002] Various scalp treatments and applications of liquid products (such as lotions), especially those utilized in professional settings, are well known in the prior art. As will be appreciated, hairdressers and the like apply liquid products (such as lotions) to the scalp using devices for dispensing the liquid products.

[0003] An applicator for a fluid product, such as a cosmetic product, is known from US Pat. No. 5,699,499, which discloses an applicator for a fluid product, such as a cosmetic product, of the type comprising a container having an outlet, a control ring attached to the container so that the control ring can move between a closed position sealing the outlet and an open position opening the outlet, and an application member attached to the control ring so as to be in communication with the outlet when the ring is in the open position, abutment means being provided to stop movement of the ring towards its closed position, the control ring being rotatably attached to the container without any movement.

[0004] No. 5,629,999 provides an applicator that allows a predetermined alignment of the control ring relative to the container to be maintained in the closed position while achieving perfect clamping during its entire service life.

[0005] It can be seen that there continues to be a need for new and improved devices for dispensing liquid products as described herein that provide adequate formulation delivery along with well-established massaging functionality, and in this regard the present invention substantially meets this need. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] European Patent Application Publication No. 1978841 Summary of the Invention [Problem to be solved by the invention]

[0007] It is therefore one object of the present invention to provide a device for dispensing liquid products that provides adequate formulation delivery along with well-established massaging functionality. [Means for solving the problem]

[0008] According to one advantageous embodiment, the invention relates to a device for dispensing a liquid product, comprising: - a container including an opening for dispensing said liquid product; - an externally threaded cap configured to be mounted onto said container; - an inner cap engageable with the outer threaded cap and movable on the outer threaded cap from an open position in which the liquid product is dispensed from the container to a closed position in which the liquid product is prevented from flowing; an applicator coupled to the inner cap and configured to dispense a liquid product therefrom; Including, a channel formed on a portion of the outer threaded cap for engaging the inner cap, and a slider formed on the inner cap, the slider sliding along the channel between an open position and a closed position during rotation of the inner cap relative to the outer threaded cap, the inner cap moving axially away from the outer threaded cap during rotation toward the open position; Device, relating to.

[0009] According to another aspect of the present application, an externally threaded cap includes a cap body having a skirt portion for fixing onto an opening of a container and a sealing formed on a top of the skirt portion, the externally threaded cap includes a collar extending axially from the sealing, and a channel formed on an outer peripheral surface of the collar and inclined axially. The internal cap includes an outer peripheral skirt portion and a base portion formed on an upper end of the outer peripheral skirt portion, and a slider portion extending radially inward from an inner peripheral surface of the outer peripheral skirt portion, the slider portion sliding within the channel during rotation of the internal cap relative to the externally threaded cap.

[0010] In another aspect of the present application, a stop extends axially from the sealing of the externally threaded cap, an inner peripheral skirt extends axially from the base and is coaxial with the outer peripheral skirt on the inner cap, and a corresponding stop extends axially from the base and radially from the outer periphery of the inner peripheral skirt, and when the inner cap is rotated to the closed position, the corresponding stop abuts against the stop with an audible click or sound.

[0011] In another aspect of the present application, the collar includes at least one axial slot at each end of the channel, and when the inner cap is rotated to an open or closed position, the slider slides into a respective one of the axial slots.

[0012] According to another aspect of the present application, the collar includes two or four axial slots spaced about its circumference, two channels formed diagonally on the outer circumferential surface of the collar, and two or four slides formed diagonally on the inner cap, such that the inner cap rotates from a closed position to an open position through 90 to 180 degrees.

[0013] In another aspect of the present application, the inner cap and the outer threaded cap each include a recess and a complementary recess, the recess being coaxial with the outer peripheral skirt of the inner cap and the complementary recess being coaxial with the collar on the outer threaded cap. A post extends axially from the sealing and is centrally disposed in the complementary recess, the post abutting an inner peripheral surface of the recess to prevent the liquid product from flowing when the inner cap is in the closed position, and the liquid product passing between the post and the recess when the inner cap is in the open position.

[0014] In another aspect of the present application, the support post is formed with an upstanding dome at its free end, the upstanding dome abutting the inner periphery of the recess when the inner cap is in the closed position.

[0015] In another aspect of the present application, a hole is formed in the sealing and is located between the outer peripheral surface of the support post and the inner peripheral surface of the complementary recess, and an aperture is formed in the base and in the recess, the hole and aperture forming part of a passageway for the liquid product.

[0016] In another aspect of the present application, when the inner cap is in the closed position, the upstanding dome cooperatively engages the recess to close the aperture.

[0017] In another aspect of the present application, the collar has a rim on its outer circumferential surface and the outer circumferential skirt has a corresponding rim on its inner circumferential surface for engaging the rim to prevent axial movement of the inner cap away from the outer threaded cap.

[0018] In another aspect of the present application, the collar has one or more reinforcing ribs extending axially on the inner circumferential surface of the collar at locations corresponding to the channels.

[0019] In another aspect of the present application, the externally threaded cap includes a curved axial groove formed on the sealing, the curved axial groove being coaxial with the collar and having a depth that varies axially, and the inner cap includes an overhang extending axially from the inner peripheral skirt, the overhang sliding within the curved axial groove during rotation of the inner cap relative to the externally threaded cap.

[0020] In another aspect of the present application, the applicator includes a massage head portion made of a material selected from the group consisting of TPE, elastomeric plastic, PU (polyurethane), and silicone rubber, and preferably having a Shore A hardness of between 20 and 90.

[0021] In another aspect of the present application, the applicator includes a plurality of nozzles, and the massage head is mounted on the applicator.

[0022] In another aspect of the present application, the massage head includes a plurality of massaging protrusions corresponding to the plurality of nozzles, the massaging protrusions having a ball or oval shape.

[0023] Further areas of applicability will become apparent from the description provided herein. It should be understood that the description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.

[0024] The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. [Brief explanation of the drawings]

[0025] [Figure 1] 1 is a perspective view of a device for dispensing a liquid product according to an exemplary embodiment of the present application; [Figure 2]An exploded view of a device for dispensing a liquid product according to an exemplary embodiment of the present application, with the container of the device omitted and showing an outer screw cap, an inner cap, an applicator, and optionally a massage head portion that fits onto the applicator. [Figure 3] FIG. 1 is a perspective view of an inner cap and applicator of a device for dispensing a liquid product according to an exemplary embodiment of the present application. [Figure 4] FIG. 1 is a perspective view of an external screw cap of a device for dispensing liquid products according to an exemplary embodiment of the present application. [Figure 4A] FIG. 10 is another perspective view of the external screw cap of the device for dispensing liquid products from another angle, showing the channels on the collar of the external screw cap in more detail. [Figure 5] FIG. 2 is a perspective view of an inner cap of a device for dispensing liquid products, according to an exemplary embodiment of the present application, the inner cap being shown in a view seen from below. [Figure 6] FIG. 2 is a cross-sectional view of an inner cap and an outer screw cap of a device for dispensing liquid products according to an exemplary embodiment of the present application, the inner cap being in a closed position relative to the outer screw cap. [Figure 7] FIG. 2 is a cross-sectional view of an inner cap and an outer screw cap of a device for dispensing liquid products according to an exemplary embodiment of the present application, the inner cap being in an open position relative to the outer screw cap. DETAILED DESCRIPTION OF THE INVENTION

[0026] The following description is merely exemplary in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0027] Referring now to the drawings, a new and improved device for dispensing liquid products will be described which embodies the principles and concepts of the present invention and which is generally designated by the reference numeral 1.

[0028] Referring to FIG. 1 , a device 1 for dispensing a liquid product according to an exemplary embodiment of the present application is shown. The device 1 is held by a user to allow the user to massage the scalp and apply a liquid product to the scalp using at least one massage element. The massage element is, for example, a ball or sphere that is placed on the user's body surface. In one example, the massage element is a nozzle 51 of an applicator 5. In another example shown in FIGS. 1 and 2 , the massage element is a massage head 6 stacked on the applicator 5. In one example, the massage head 6 includes multiple massage protrusions 61 corresponding to the number of nozzles 51. The massage protrusions 61 are made of an elastomeric material and have a ball or oval shape. In one example, the massage protrusions 61 and / or the massage head are made of a TPE material, which preferably has a Shore A hardness. In another example, the massage protrusions 61 may be made of a material selected from the group consisting of TPE, elastomeric plastic, PU (polyurethane), and silicone rubber. In one example, the Shore hardness of the massaging protrusions 61 is between 20 and 90. In one example, the applicator and / or nozzle is made of PP and TPE by a bi-injection molding process. In such circumstances, the device for dispensing liquid products 1 provides the customer with a pleasant, gentle massaging sensation.

[0029] In one exemplary embodiment of the present application, when in the open position, the container 2 can be squeezed to promote the flow of the liquid product. Additionally, multiple nozzles 51 have the advantage over a single nozzle in that the reduced volume of each nozzle results in a more uniform distribution of the fluid product.

[0030] In this application, the device for dispensing a liquid product includes a scalp massage applicator, which has three to five nozzles. The soft material (TPE / elastomer / PU material) used in the scalp massage applicator using bi-injection technology is believed to enable the device for dispensing a liquid product to achieve adequate formulation delivery along with a massaging function. Furthermore, the applicator is easy to move on the scalp because it has four nozzles for formulation delivery and a soft elastomer for massaging function on the scalp. The soft feel of the massage applicator is believed to help improve blood circulation in the scalp.

[0031] The device 1 for dispensing a liquid product includes an externally threaded cap 3 configured to be mounted onto a container 2. In particular, in one example, as shown in Figures 4, 4A, and 6-7, the externally threaded cap 3 includes a cap body 31 having a skirt portion 312 for fixing onto the opening of the container and a sealing 311 formed on the top of the skirt portion 312. Moreover, the externally threaded cap 3 includes a collar 32 extending axially from the sealing 311 in the opposite direction from the skirt portion 312, the collar 32 forming a part of the externally threaded cap 3 for engaging with the inner cap 4. As shown in Figures 6-7, the skirt portion 312 has an internal thread on its inner circumferential surface, and the skirt portion 312 is fixed onto the opening of the container by the internal thread.

[0032] 5, and with continued reference to FIGS. 2 and 6-7, the device 1 for dispensing a liquid product also includes an inner cap 4 engageable with the outer screw cap 3 and movable thereon from an open position, in which the liquid product is dispensed from the container 2, to a closed position, in which the liquid product is prevented from spilling. In an exemplary embodiment of the present application, as shown in FIGS. 4-5 and particularly shown in FIG. 4A, a channel 321 is formed on the outer circumferential surface of the collar 32 of the outer screw cap 3, preferably midway along the outer circumferential surface of the collar 32, and a slider 413 is formed on the inner cap 4, such that during rotation of the inner cap 4 relative to the outer screw cap 3 between the open and closed positions, the slider 413 slides along the channel 321, and during rotation toward the open position, the inner cap 4 moves axially away from the outer screw cap 3. In one example, the inner cap 4 and / or the outer screw cap 3 are made of a PP material by injection molding.

[0033] 5, the inner cap 4 includes an outer skirt 41 and a base 40 formed like a ceiling or upper plate at the upper end of the outer skirt 41. A sliding portion 413 extends radially inward from the inner peripheral surface of the outer skirt 41, and slides within the channel 321 of the outer cap 3 during rotation of the inner cap 4 relative to the outer cap 3.

[0034] Thus, the present application uses a simple inner / outer sliding system to open and close the device 1 for dispensing a liquid product. The inner / outer sliding system, which can also be called an on / off system, is considered to have a simple rotating gesture and to achieve multiple functions (e.g., closing / opening / formulation delivery). Furthermore, this on / off system also includes a formulation delivery function, which is considered to provide formulation delivery until it is brought close to the scalp for blood circulation. The soft massage applicator allows consumers to press the applicator during massage and formulation delivery to provide pressure, which is considered to further promote blood circulation to the scalp while the formulation is being applied to the scalp. Furthermore, the soft, ball-shaped or oval-shaped massaging protrusions 61 made of an elastomeric material provide a comfortable sensation to the consumer, thereby allowing the consumer to enjoy the functional benefits of the liquid scalp / hair composition for scalp health.

[0035] Additionally, the device 1 for dispensing a liquid product includes an applicator 5. In an exemplary embodiment shown in FIG. 3, the applicator 5 includes an outer skirt 52 and a plurality of nozzles 51. In an exemplary embodiment, the outer skirt 52 includes a pair of axially extending ribs 521 formed on an inner circumferential surface thereof. In an exemplary embodiment, the outer skirt 52 also includes a circumferential lip 522 on its inner circumferential surface, the circumferential lip 522 being interrupted at a location where the pair of axially extending ribs 521 are located. In an exemplary embodiment shown in FIG. 3, the outer skirt 41 of the inner cap 4 includes a pair of axially extending ridges 411 at locations corresponding to the pair of axially extending ribs 521 of the applicator 5. The pair of axially extending ridges 411 abut against the pair of axially extending ribs 521 during operation to prevent the applicator 5 from rotating relative to the inner cap 4. In one exemplary embodiment, the inner cap 4 includes a circumferential rim 412 on its outer periphery, and when the applicator 5 is coupled to the inner cap 4, the circumferential lip 522 of the applicator 5 slides over the circumferential rim 412 of the inner cap 4 to prevent the applicator 5 from moving axially away from the inner cap 4. In this manner, the applicator 5 is restricted from rotating or moving axially relative to the inner cap 4. In other words, the applicator 5 is coupled to the inner cap 4 without any movement by corresponding axially extending ribs, ridges, and circumferential rims and lips on the applicator 5 and the inner cap 4, respectively. In this manner, the applicator 5 and the inner cap 4 are formed as if they were one piece, and as a result, the device 1 for dispensing liquid products is more convenient to use.

[0036] In one exemplary embodiment shown in Figures 4-5, the stop 35 in the externally threaded cap 3 extends axially from the sealing 311 of the externally threaded cap 3, the inner peripheral skirt 42 extends axially from the base 40 of the inner cap 4 and is coaxial with the outer peripheral skirt 41 on the inner cap 4, and the corresponding stop 44 in the inner cap 4 extends axially from the base 40 and radially from the outer periphery of the inner peripheral skirt 42, and when the inner cap 4 is rotated to the closed position, the corresponding stop 44 abuts against the stop 35 with a distinct or audible click.

[0037] Thus, the present application uses a simple inward / outward sliding system in combination with a corresponding stop that produces a click or audible sound to remind the user that the device is already in the closed position, and that in this closed position no fluid product will now flow out.

[0038] In one exemplary embodiment, with continued reference to Figures 4-5, the externally threaded cap 3 includes a curved axial groove 310 formed on the sealing 311, the curved axial groove 310 being coaxial with the collar 32 and having a depth that varies in the axial direction A, and the inner cap 4 includes an overhang 421 extending axially from the inner peripheral skirt portion 42, the overhang 421 sliding within the curved axial groove 310 in conjunction with the sliding portion 413 sliding within the channel 321 during rotation of the inner cap 4 relative to the externally threaded cap 3.

[0039] 6-7, and with continued reference to Figures 4-5, in one exemplary embodiment, the collar 32 includes at least one, and preferably two, axial slots 322 at either end of the channel 321, and when the inner cap 4 is rotated to the open or closed position, the slider 413 slides into one of the two axial slots 322 accordingly. Thus, when the device for dispensing a liquid product is in the open or closed position, the user gets tactile feedback as the slider slides into the axial slot 322, which is deeper than the channel 321.

[0040] In one exemplary embodiment, the collar 32 includes two or four axial slots 322 spaced about its circumference, two channels 321 are formed diagonally on the outer periphery of the collar 32, and two slides 413 are formed diagonally on the inner cap 4, so that the inner cap 4 can rotate approximately 90 to 180 degrees from the closed position to the open position. Such 90 to 180 degree rotation helps make the device easier to operate and even allows a user to operate the device one-handed.

[0041] Furthermore, the diagonally symmetrical arrangement of the sliders and channels allows for more precise translation or rotation during operation of the device, facilitating complete guidance to the open position. In one example, the four axial slots 322 are equally spaced around the circumference of the collar 32, and the inner cap 4 preferably rotates approximately 90 degrees from the closed position to the open position.

[0042] 4-7, in one exemplary embodiment, the inner cap 4 and the outer threaded cap 3 each include a recess 43 and a complementary recess 33, with the recess 43 extending axially from the base 40 and coaxial with the outer peripheral skirt 41 of the inner cap 4, and the complementary recess 33 extending axially from the sealing 311 and coaxial with the collar 32 on the outer threaded cap 3. In one example, a post 34 extends axially from the sealing 311 and is centered within the complementary recess 33. In one example, as shown in FIG. 6, when the inner cap 4 is in the closed position, the post 34 abuts against the inner circumferential surface of the recess 43 to prevent the liquid product from spilling, and when the inner cap 4 is in the open position, the liquid product passes between the post 34 and the recess 43 and spills, as shown in FIG. 7.

[0043] In one exemplary embodiment, as shown in Figures 4 and 6, the support post 34 is formed with an upstanding dome 341 at its free end, which abuts against the inner circumferential surface of the recess 43 to seal the passage for the liquid product when the inner cap 4 is in the closed position, as shown in Figure 6.

[0044] 4 and 5, a hole 340 is formed in the ceiling 311 and is disposed between the outer periphery of the post 34 and the inner periphery of the complementary recess 33, and an aperture 430 is formed in the base 40 and within the recess 43. In an exemplary embodiment, as shown in FIG. 6, when the inner cap 4 is in the closed position, the upstanding dome 341 cooperatively engages with the recess 43 to close the aperture 430.

[0045] In one exemplary embodiment, as shown in FIG. 7 , the collar 32 has a peripheral edge 324 on its outer circumferential surface, and the outer circumferential skirt 41 has a corresponding peripheral edge 414 on its inner circumferential surface for engaging with the peripheral edge 324 to prevent axial movement of the inner cap 4 away from the outer threaded cap 3.

[0046] 4, the collar 32 has one or more reinforcing ribs 323 extending axially on the inner peripheral surface of the collar 32 at positions corresponding to the channel 321. In this manner, the reinforcing ribs 323 add rigidity or strength to the channel 321 or collar 32 of the externally threaded cap 3, thereby preventing the channel 321 or collar 32 from being damaged after multiple openings and closings of the device.

[0047] In one exemplary embodiment, as shown in FIG. 6, when the inner cap 4 is in the closed position, the axial distance between the bottom end of the outer skirt 41 of the inner cap 4 and the sealing 311 of the outer cap 3 is shortest, and this axial distance is indicated by "d1" in FIG. 6. In contrast, as shown in FIG. 7, when the inner cap 4 is in the open position, the axial distance between the bottom end of the outer skirt 41 of the inner cap 4 and the sealing 311 of the outer cap 3 is longest, and this axial distance is indicated by "d2" in FIG. 7. As an example, d1 may range from 0.2 to 3 mm, and this short distance is believed to help provide a good alignment between the inner cap 4 and the outer cap 3. Furthermore, d2 may range from 2.2 to 5 mm, and this short distance is believed to help avoid any twisting when pressed horizontally. As another example, "d2 - d1" may range from 0.2 mm to 5 mm. In one example, d2 - d1 = 2 mm. In other words, when the inner cap 4 is rotated from the closed position of Figure 6 to the open position of Figure 7, the inner cap 4 lifts approximately 2 mm during rotation, such axial lift helping to create sufficient space or passage for the liquid product to flow out and be dispensed (at a greater flow rate).

[0048] Aspects of the present disclosure have been described in detail with reference to illustrated embodiments. However, those skilled in the art will recognize that many modifications may be made thereto without departing from the scope of the present disclosure. The present disclosure is not limited to the exact structures and compositions disclosed herein; any and all modifications, changes, and variations apparent from the above description are within the scope of the disclosure as defined by the appended claims. Moreover, the present concept expressly includes any and all combinations and subcombinations of the elements and functions described above. [Explanation of symbols]

[0049] 1. Devices for dispensing liquid products 2 containers 3 Externally threaded cap 4 Inner cap 5 Applicator 6 Massage head 31 Cap body 32 colors 33 Complementary recess 34 Post 35 Stopper inside external screw cap 40 Base 41 Outer skirt 42 Inner skirt 43 Depression 44 Matching stop in inner cap 51 nozzles 52 Outer skirt 61 Massage protrusion 310 Curved axial groove 311 Ceiling 312 Skirt Club 321 channels 322 axial slot 323 Reinforced Rib 324 Periphery 340 Hole 341 Upright Dome 411 Axially extending ridge 412 Circumferential Rim 413 Sliding part 414 corresponding periphery 421 Overhang 430 aperture 521 Axially extending rib 522 Circumferential Lip A axis direction d1 (shortest axial distance from the bottom edge of the outer skirt to the sealing) d2 (longest axial distance from the bottom edge of the outer skirt to the sealing)

Claims

1. 1. A device for dispensing a liquid product, comprising: a container (2) comprising an opening for dispensing said liquid product; an externally threaded cap (3) adapted to be mounted on said container (2); an inner cap (4) engageable with said outer threaded cap (3) and movable thereon from an open position in which said liquid product is dispensed from said container (2) to a closed position in which said liquid product is prevented from spilling; an applicator (5) connected to said inner cap (4) and adapted to dispense said liquid product therefrom; In a device comprising: a channel (321) formed on a portion of the outer threaded cap (3) for engaging with the inner cap (4), a slider (413) formed on the inner cap (4), the slider (413) sliding along the channel (321) during rotation of the inner cap (4) relative to the outer threaded cap (3) between the open position and the closed position, and the inner cap (4) moving axially away from the outer threaded cap (3) during the rotation towards the open position.

2. The externally threaded cap (3) includes a cap body (31) having a skirt portion (312) for fixing onto the opening of the container and a sealing (311) formed on the top of the skirt portion (312), the externally threaded cap (3) includes a collar (32) extending axially from the sealing (311), the channel (321) being formed on the outer circumferential surface of the collar (32) and inclined in the axial direction (A); 2. The device of claim 1, wherein the inner cap (4) includes an outer peripheral skirt portion (41) and a base portion (40) formed at the upper end of the outer peripheral skirt portion (41), and the sliding portion (413) extends radially inward from the inner peripheral surface of the outer peripheral skirt portion (41), and the sliding portion (413) slides within the channel (321) during rotation of the inner cap (4) relative to the outer threaded cap (3).

3. 3. The device of claim 2, wherein a stop (35) extends axially from the sealing (311) of the externally threaded cap (3), an inner peripheral skirt (42) extends axially from the base (40) and is coaxial with the outer peripheral skirt (41) on the inner cap (4), and a corresponding stop (44) extends axially from the base (40) and radially from the outer periphery of the inner peripheral skirt (42), and when the inner cap (4) is rotated to the closed position, the corresponding stop (44) abuts against the stop (35) with an audible or click sound.

4. 3. The device of claim 2, wherein the collar (32) includes at least one axial slot (322) at each end of the channel (321), and the slider (413) slides into a respective one of the axial slots (322) when the inner cap (4) is rotated to the open position or the closed position.

5. 5. The device of claim 4, wherein the collar (32) includes two or four axial slots (322) spaced apart around its circumference, two channels (321) are formed diagonally on the outer circumferential surface of the collar (32), and two or four slides (413) are formed diagonally on the inner cap (4), so that the inner cap (4) can rotate from the closed position to the open position by 90 to 180 degrees.

6. the inner cap (4) and the externally threaded cap (3) each include a recess (43) and a complementary recess (33), the recess (43) being coaxial with the outer peripheral skirt (41) of the inner cap (4) and the complementary recess (33) being coaxial with the collar (32) on the externally threaded cap (3); a post (34) extending axially from said ceiling (311) and centrally disposed in said complementary recess (33); 3. The device of claim 2, wherein when the inner cap (4) is in the closed position, the support (34) abuts against the inner circumferential surface of the recess (43) to prevent the liquid product from flowing, and when the inner cap (4) is in the open position, the liquid product passes between the support (34) and the recess (43).

7. 7. The device according to claim 6, wherein the support (34) is formed with an upright dome (341) at its free end, the upright dome (341) abutting the inner circumferential surface of the recess (43) when the inner cap (4) is in the closed position.

8. 8. The device of claim 7, wherein a hole (340) is formed in the ceiling (311) and is arranged between the outer peripheral surface of the support (34) and the inner peripheral surface of the complementary recess (33), and an aperture (430) is formed in the base (40) and in the recess (43), the hole (340) and the aperture (430) forming part of a passage for the liquid product.

9. 9. The device of claim 8, wherein when the inner cap (4) is in the closed position, the upstanding dome (341) cooperatively engages with the recess (43) to close the aperture (430).

10. 3. The device of claim 2, wherein the collar (32) has a peripheral edge (324) on the outer peripheral surface of the collar (32), and the outer peripheral skirt (41) has a corresponding peripheral edge (414) on the inner peripheral surface thereof for engaging with the peripheral edge (324) to prevent the inner cap (4) from moving axially away from the outer threaded cap (3).

11. 3. The device of claim 2, wherein the collar (32) has one or more reinforcing ribs (323) extending axially on the inner peripheral surface of the collar (32) at positions corresponding to the channels (321).

12. The externally threaded cap (3) includes a curved axial groove (310) formed on the sealing (311), the curved axial groove (310) being coaxial with the collar (32), and the depth of the groove varying in the axial direction (A); 4. The device of claim 3, wherein the inner cap (4) includes an overhang (421) extending axially from the inner peripheral skirt portion (42), the overhang (421) sliding within the curved axial groove portion (310) during rotation of the inner cap (4) relative to the outer threaded cap (3).

13. 13. A device according to any one of claims 1 to 12, wherein the applicator (5) comprises a massage head made of a material selected from the group consisting of TPE, elastomeric plastic, PU (polyurethane) and silicone rubber, preferably having a Shore A hardness between 20 and 90.

14. 14. The device according to any one of claims 1 to 13, wherein the applicator (5) comprises a plurality of nozzles (51), and the massage head (6) is fitted onto the applicator (5).

15. 15. The device according to claim 14, wherein the massage head portion (6) includes a plurality of massage protrusions (61) corresponding to the plurality of nozzles (51), and the massage protrusions (61) have a ball or oval shape.

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