Device for dispensing a liquid product

Abstract

The invention relates to a device for dispensing a liquid product, comprising: a container (2) comprising an opening for dispensing the liquid product; an externally threaded cap (3) configured to be mounted on the container (2); an inner cap (4) engageable with the externally threaded 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 flowing out; and an applicator (5) coupled to the inner cap (3) and configured to dispense a liquid product from the applicator; wherein a channel (321) is formed on a portion of the male threaded cap (3) for engagement with the inner cap (4), and a slider (413) is formed on the inner cap (4), and the slider (413) slides along the channel (321) during rotation of the inner cap (4) relative to the male threaded cap (3) between an open position and a closed position, and slides along the channel (321) during rotation toward the open position. The inner cap (4) will be moved axially away from the externally threaded cap (3).

Description

Technical Field

[0001] The present invention generally relates to a device for dispensing a liquid product. Background Art

[0002] The application of various scalp treatments and liquid products (e.g., lotions), particularly those used in professional form, is well known in the art. As a matter of course, a barber or the like applies a liquid product (e.g., lotion) to the scalp with the aid of a device for dispensing the liquid product.

[0003] An applicator for fluid products such as cosmetics is known from document EP 1 978 841 A2. This document discloses an applicator of the type for fluid products such as cosmetics, comprising: a container having an outlet; a control ring mounted to the container so that it can move between a closed position closing the outlet and an open position opening the outlet; and an application member mounted to the control ring so as to communicate with the outlet when the ring is in the open position, provided with abutment means so as to stop the movement of the ring towards its closed position, the control ring being rotatably mounted to the container in a manner that does not involve any translation.

[0004] EP 1 978 841 A2 provides an applicator which, in the closed position, allows the control ring to maintain a predetermined alignment relative to the container during its entire service life, while providing complete tightness.

[0005] It will be appreciated that there remains a need for a new and improved device for dispensing liquid products as described herein which provides proper formulation delivery as well as a well established massaging function, and in this regard, the present invention substantially satisfies this need. Summary of the invention

[0006] It is therefore an object of the present invention to provide a device for dispensing liquid products which provides a correct formulation delivery as well as a well-established massaging function.

[0007] According to an advantageous embodiment, the invention relates to a device for dispensing a liquid product, comprising:

[0008] - a container comprising an opening for dispensing the liquid product;

[0009] - an externally threaded cap configured to be mounted on the container;

[0010] - An inner cap that can engage with the external threaded cap and can move on the external threaded cap from an open position, where the liquid product is dispensed from the container, to a closed position, where the outflow of the liquid product is blocked; and

[0011] - An applicator that is coupled to the inner cap and configured to dispense the liquid product from the applicator;

[0012] wherein a channel is formed in a part of the external threaded cap for engaging with the inner cap, and a slider is formed on the inner cap, and during the rotation of the inner cap relative to the external threaded cap between the open position and the closed position, the slider slides along the channel, and during the rotation towards the open position, the inner cap will move axially away from the external threaded cap.

[0013] In another aspect of the present application, the external threaded cap includes a cap body having a skirt portion for fastening to the container opening and a top plate formed at the top of the skirt portion, and the external threaded cap includes a neck ring axially extending from the top plate, and a channel is formed on the outer peripheral surface of the neck ring and is inclined in the axial direction A. The inner cap includes an outer peripheral skirt portion and a base formed at the top end of the outer peripheral skirt portion, and a slider radially extends inwards from the inner peripheral surface of the outer peripheral skirt portion, and during the rotation of the inner cap relative to the external threaded cap, the slider will slide within the channel.

[0014] In another aspect of the present application, a stopper axially extends from the top plate of the external threaded cap, and an inner peripheral skirt portion axially extends from the base and is coaxial with the outer peripheral skirt portion on the inner cap, and a corresponding stopper axially extends from the base and radially extends from the outer periphery of the inner peripheral skirt portion, and when the inner cap rotates to the closed position, the corresponding stopper will abut against the stopper with a click or an audible sound.

[0015] In another aspect of the present application, the neck ring includes at least one axial slot located at either end of the channel, and when the inner cap rotates to the open position or the closed position, the slider will slide into the corresponding one of the axial slots.

[0016] In another aspect of the present application, the neck ring includes two or four axial slots spaced apart at its circumference, and two channels are diagonally formed on the outer peripheral surface of the neck ring, and two or four sliders are diagonally formed on the inner cap, such that the inner cap rotates 90 degrees to 180 degrees from the closed position to the open position.

[0017] In another aspect of the present application, the inner cap and the external threaded cap respectively include a recess and a complementary recess. The recess is coaxial with the outer peripheral skirt of the inner cap, and the complementary recess is coaxial with the neck ring on the external threaded cap. A post axially extends from the top plate and is located at the center of the complementary recess; wherein, when the inner cap is in the closed position, the post abuts against the inner peripheral surface of the recess so as to prevent the liquid product from flowing out; when the inner cap is in the open position, the liquid product will pass between the post and the recess.

[0018] In another aspect of the present application, the post is formed with an upright dome at the free end, and when the inner cap is in the closed position, the upright dome abuts against the inner peripheral surface of the recess.

[0019] In another aspect of the present application, holes are formed in the top plate and are located between the outer peripheral surface of the post and the inner peripheral surface of the complementary recess, and openings are formed in the base and are located within the recess, and these holes and openings form part of the passage for the liquid product.

[0020] In another aspect of the present application, when the inner cap is in the closed position, the upright dome cooperatively engages with the recess to block the opening.

[0021] In another aspect of the present application, the neck ring has a circumferential edge on its outer peripheral surface, and the outer peripheral skirt has a corresponding circumferential edge on its inner peripheral surface for engaging with the circumferential edge to prevent the inner cap from axially moving away from the external threaded cap.

[0022] In another aspect of the present application, the neck ring has one or more reinforcing ribs that axially extend on the inner peripheral surface of the neck ring at positions corresponding to the channels.

[0023] In another aspect of the present application, the external threaded cap includes a curved axial groove formed on the top plate. The curved axial groove is coaxial with the neck ring, and the depth of the groove varies in the axial direction A. The inner cap includes a cantilever extending axially from the inner peripheral skirt, and during the rotation of the inner cap relative to the external threaded cap, the cantilever will slide within the curved axial groove.

[0024] In another aspect of the present application, the applicator includes a massage head, and the massage head is made of a material selected from the group including TPE, elastomeric plastics, PU polyurethane resin, and silicone rubber, and has a Shore hardness of grade A, and the Shore hardness is preferably between 20 and 90.

[0025] In another aspect of the present application, the applicator includes a plurality of nozzles, and the massage head will be assembled onto the applicator.

[0026] In another aspect of the present application, the massage head includes a plurality of massage protrusions corresponding to the plurality of nozzles, and the massage protrusions have a spherical or elliptical shape.

[0027] Further application areas will become apparent from the description provided herein. It should be understood that the description and specific examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure in any way.

[0029] Figure 1 is a perspective view of a device for dispensing a liquid product according to an exemplary embodiment of the present application;

[0030] Figure 2 is an exploded view of a device for dispensing a liquid product according to an exemplary embodiment of the present application, wherein the container of the device is omitted, and Figure 2 shows an externally threaded cap, an inner cap, an applicator, and optionally a massage head to be assembled onto the applicator;

[0031] Figure 3 is a perspective view of the inner cap and the applicator of a device for dispensing a liquid product according to an exemplary embodiment of the present application;

[0032] Figure 4 is a perspective view of the externally threaded cap of a device for dispensing a liquid product according to an exemplary embodiment of the present application;

[0033] Figure 4A is another perspective view of the externally threaded cap of a device for dispensing a liquid product viewed from another angle, wherein the channels on the neck ring of the externally threaded cap are shown in more detail;

[0034] Figure 5 is a perspective view of the inner cap of a device for dispensing a liquid product according to an exemplary embodiment of the present application, wherein the inner cap is shown in a view from the bottom;

[0035] Figure 6 is a cross-sectional view of the inner cap and the externally threaded cap of a device for dispensing a liquid product according to an exemplary embodiment of the present application, wherein the inner cap is in a closed position relative to the externally threaded cap; and

[0036] Figure 7 is a cross-sectional view of the inner cap and the externally threaded cap of a device for dispensing a liquid product according to an exemplary embodiment of the present application, wherein the inner cap is in an open position relative to the externally threaded cap. DETAILED DESCRIPTION

[0037] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or use.

[0038] Referring now to the drawings, there will be described a new and improved apparatus for dispensing a liquid product embodying the principles and concepts of the present invention and generally designated by the reference numeral 1.

[0039] Referring Figure 1 , there is shown an apparatus 1 for dispensing a liquid product according to an exemplary embodiment of the present application. The apparatus 1 is grasped by a user to allow the user to perform a massage of the scalp and apply a liquid product to be treated to the scalp using at least one massage element. The massage element is, for example, a ball or sphere applied to the body surface of the user. In one example, the massage element is the nozzle 51 of the applicator 5. In Figure 1-2 Another example shown, the massage element is a massage head 6 nested on the applicator 5. In one example, the massage head 6 includes a plurality of massage protrusions 61 corresponding to the number of the plurality of nozzles 51, and the massage protrusions 61 are made of an elastomeric material and have a spherical or elliptical shape. In one example, the massage protrusions 61 and / or the massage head are made of a TPE material, and preferably, the TPE material has a Shore hardness with an A scale. In another example, the massage protrusions 61 may be made of a material selected from the group consisting of TPE, elastomeric plastics, PU (polyurethane), and silicone rubber. In one example, the Shore hardness of the massage protrusions 61 is between 20 and 90. In one example, the applicator and / or the nozzle are made of PP and TPE by a double injection molding process. In this case, the apparatus 1 for dispensing a liquid product will provide a comfortable soft massage feeling for the consumer.

[0040] In an exemplary embodiment of the present application, the container 2 can be squeezed to facilitate the outflow of the liquid product when in the open position. Further, a plurality of nozzles 51 are preferred over only one nozzle because for each nozzle, the fluid product is dispensed more uniformly in a reduced volume.

[0041] In the present application, the apparatus for dispensing a liquid product includes a scalp massage applicator, and the applicator has 3 to 5 nozzles. Since the scalp massage applicator employs a soft material (TPE / elastomer / PU material) having a double injection technique, the apparatus for dispensing a liquid product will provide correct formulation delivery as well as a massage function. Further, the applicator will be easy to move on the scalp because it has 4 nozzles for formulation delivery and a soft elastomer for the massage function on the scalp. Due to the soft touch of the massage applicator, the applicator will help improve blood circulation in the scalp.

[0042] The apparatus 1 for dispensing a liquid product includes an external threaded cap 3 which is designed to be mounted onto the container 2. In particular, in one example, as Figure 4 ,4A As shown in FIGS. 6 and 7, the external threaded cap 3 includes a cap body 31 having a skirt portion 312 for fixing to the opening of the container and a top plate 311 formed at the top of the skirt portion 312. In addition, the external threaded cap 3 includes a neck ring 32 axially extending from the top plate 311 in a direction opposite to the skirt portion 312, and the neck ring 32 forms the portion of the external threaded cap 3 for engaging with the inner cap 4. As Figure 6-7 shown, the skirt portion 312 has an internal thread on its inner circumferential surface, and the skirt portion 312 is fastened to the opening of the container by this internal thread.

[0043] Reference Figure 5 and continuing to refer to Figure 2 and 6 -7, the device 1 for dispensing a liquid product further includes an inner cap 4 which can engage with the said external threaded cap 3 and can be moved thereon from an open position to a closed position. In the open position, the liquid product is dispensed from the container 2, and in the closed position, the liquid product is prevented from flowing out. In an exemplary embodiment of the present application, as Figure 4-5 shown and particularly as Figure 4A shown, a channel 321 is formed on the outer circumferential surface of the neck ring 32 of the external threaded cap 3 and preferably in the middle of the outer circumferential surface of the neck ring 32, and a slider 413 is formed on the inner cap 4, and during the rotation of the inner cap 4 relative to the external threaded cap 3 between the open position and the closed position, the slider 413 slides along the channel 321, and during the rotation towards the open position, the inner cap 4 will move axially away from the said external threaded cap 3. In one example, the inner cap 4 and / or the external threaded cap 3 are made of PP material by an injection molding process.

[0044] In an exemplary embodiment as Figure 5 shown, the inner cap 4 includes an outer peripheral skirt portion 41 and a base portion 40, and the base portion is formed at the top end of the outer peripheral skirt portion 41 to be similar to a top plate or a top board. The slider 413 extends radially inwards from the inner circumferential surface of the outer peripheral skirt portion 41, and during the rotation of the inner cap 4 relative to the external threaded cap 3, the slider 413 will slide within the channel 321 of the external threaded cap 3.

[0045] Thus, the present application uses a simple inner / outer sliding system to achieve the opening and closing of the device 1 for dispensing a liquid product. The inner / outer sliding system may also be referred to as an on / off system, and it will have a simple rotational gesture and will achieve multiple functions (e.g., closing / opening / formula delivery). In addition, the on / off system also includes a formula delivery function, and it will provide formula delivery until it is close to the scalp for blood circulation. Due to the soft massage applicator, the reason for the consumer to press the applicator during massage and formula delivery is to apply a pressing force. Providing scalp blood circulation will be more helpful during the application of the formula to the scalp. In addition, the soft massage protrusions 61 in the shape of a sphere or an ellipse made of an elastomeric material will provide a comfortable feeling for the consumer, so the consumer will enjoy the functional beneficial effects of the liquid scalp / hair composition on scalp health.

[0046] In addition, the device 1 for dispensing a liquid product includes an applicator 5. In Figure 3 one exemplary embodiment as shown, the applicator 5 includes an outer skirt 52 and a plurality of nozzles 51. In one exemplary embodiment, the outer skirt 52 includes a pair of axially extending ribs 521 formed on the inner peripheral surface of the outer skirt 52. In one exemplary embodiment, the outer skirt 52 further includes a circumferential lip 522 on its inner peripheral surface, and the circumferential lip 522 is interrupted at the position where the pair of axially extending ribs 521 are located. In Figure 3 one exemplary embodiment as shown, the outer peripheral skirt 41 of the inner cap 4 includes a pair of axially extending ridges 411, whose positions correspond to the pair of axially extending ribs 521 of the applicator 5. The pair of axially extending ridges 411 will 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 edge 412 on its outer peripheral surface, and when the applicator 5 is coupled to the inner cap 4, the circumferential lip 522 of the applicator 5 will slide on the circumferential edge 412 of the inner cap 4 to prevent the applicator 5 from moving axially away from the inner cap 4. Thus, the rotation or axial movement of the applicator 5 relative to the inner cap 4 is restricted. In other words, by means of the respective axially extending ribs, ridges, and circumferential edges and lips on the applicator 5 and the inner cap 4, the applicator 5 is coupled to the inner cap 4 without any movement. Thus, the applicator 5 and the inner cap 4 are formed as if they are integral parts, making the device 1 for dispensing a liquid product more convenient to use.

[0047] In Figure 4-5In an exemplary embodiment shown, a stop member 35 in the external thread cover 3 axially extends from the top plate 311 of the external thread cover 3, and an inner peripheral skirt 42 axially extends from the base 40 of the inner cover 4 and is coaxial with the outer peripheral skirt 41 on the inner cover 4, and a corresponding stop member 44 in the inner cover 4 axially extends from the base 40 and radially extends from the outer periphery of the inner peripheral skirt 42, and when the inner cover 4 rotates to the closed position, the corresponding stop member 44 will abut against the stop member 35 with a distinct click or audible sound.

[0048] Thus, the present application combines a simple inner / outer sliding system with corresponding stop members that produce a click or audible sound, which can remind the user that the device has reached the closed position and that there is no fluid product flowing out at this closed position.

[0049] In an exemplary embodiment, continuing to refer to Figure 4-5 , the external thread cover 3 includes a curved axial groove 310 formed on the top plate 311, and the curved axial groove 310 is coaxial with the neck ring 32, and the depth of the groove varies in the axial direction A. The inner cover 4 includes a cantilever 421 axially extending from the inner peripheral skirt 42. During the rotation of the inner cover 4 relative to the external thread cover 3, the cantilever 421 will slide within the curved axial groove 310, accompanied by the sliding member 413 sliding within the channel 321.

[0050] Referring to Figure 6-7 and continuing to refer to Figure 4-5 , in an exemplary embodiment, the neck ring 32 includes at least one and preferably two axial slots 322 at each end of the channel 321, and when the inner cover 4 rotates to the open position or the closed position, the sliding member 413 will correspondingly slide into one of the two axial slots 322. Thus, when the device for dispensing a liquid product is in the open position or the closed position, the user will receive a tactile feedback because the sliding member slides into the axial slot 322 that is deeper than the channel 321.

[0051] In an exemplary embodiment, the neck ring 32 includes two or four axial slots 322 spaced apart on its circumference, and two channels 321 are formed diagonally on the outer peripheral surface of the neck ring 32, and two sliding members 413 are formed diagonally on the inner cover 4, such that the inner cover 4 rotates approximately 90 degrees to 180 degrees from the closed position to the open position. This 90 - 180 degree rotation will facilitate easier operation of the device, and even the user can operate the device with one hand.

[0052] In addition, the diagonally symmetric arrangement of the slider and the channel provides more precise movement or rotation during the operation of the device, which promotes perfect guidance to the open position. In one example, four axial slots 322 are equidistantly spaced apart at the circumference of the neck ring 32, and the inner cap 4 preferably rotates approximately 90 degrees from the closed position to the open position.

[0053] In one exemplary embodiment, with continued reference to Figure 4-7 , the inner cap 4 and the externally threaded cap 3 respectively include a recess 43 and a complementary recess 33. The recess 43 extends axially from the base 40 and is coaxial with the outer peripheral skirt 41 of the inner cap 4. The complementary recess 33 extends axially from the top plate 311 and is coaxial with the neck ring 32 on the externally threaded cap 3. In one example, a post 34 extends axially from the top plate 311 and is located at the center of the complementary recess 33. In one example, when the inner cap 4 is in the closed position as shown in Figure 6 , the post 34 abuts against the inner peripheral surface of the recess 43 to prevent the liquid product from flowing out; when the inner cap 4 is in the open position as shown in Figure 7 , the liquid product will pass between the post 34 and the recess 43 and flow out, as shown in Figure 7 .

[0054] In one exemplary embodiment, as shown in Figure 4 and 6 , the post 34 is formed with an upright dome 341 at its free end, and when the inner cap 4 is in the closed position as shown in Figure 6 , the upright dome 341 abuts against the inner peripheral surface of the recess 43 to seal the passage for the fluid product.

[0055] In one exemplary embodiment, as shown in Figure 4 and 5 , a hole 340 is formed in the top plate 311 and is located between the outer peripheral surface of the post 34 and the inner peripheral surface of the complementary recess 33, while an opening 430 is formed in the base 40 and is located within the recess 43. In one exemplary embodiment, the upright dome 341 engages cooperatively with the recess 43 to block the opening 430 when the inner cap 4 is in the closed position as shown in Figure 6 .

[0056] In one exemplary embodiment, as shown in Figure 7 , the neck ring 32 has a circumferential edge 324 on its outer peripheral surface, and the outer peripheral skirt 41 has a corresponding circumferential edge 414 on its inner peripheral surface for engaging with the circumferential edge 324 to prevent the inner cap 4 from moving axially away from the externally threaded cap 3.

[0057] In one exemplary embodiment, as shown in Figure 4As shown, the neck ring 32 has one or more reinforcing ribs 323 that axially extend on the inner peripheral surface of the neck ring 32 at positions corresponding to the channels 321. In this way, damage to the channels 321 or the neck ring 32 after multiple opening and closing of the device is avoided because the reinforcing ribs 323 increase the stiffness or strength of the channels 321 or the neck ring 32 of the externally threaded cap 3.

[0058] In one exemplary embodiment, as Figure 6 shown, when the inner cap 4 is in the closed position, the axial distance between the lowermost end of the outer peripheral skirt 41 of the inner cap 4 and the top plate 311 of the externally threaded cap 3 is minimized, and this axial distance is shown as "d1" in Figure 6 . In comparison, as Figure 7 shown, when the inner cap 4 is in the open position, the axial distance between the lowermost end of the outer peripheral skirt 41 of the inner cap 4 and the top plate 311 of the externally threaded cap 3 is maximized, and this axial distance is shown as "d2" in Figure 7 . As an example, the range of d1 can be between 0.2 and 3 mm, and this small distance will help provide a good position between the inner cap 4 and the externally threaded cap 3. In addition, the range of d2 can be between 2.2 and 5 mm, and this small distance will help avoid any distortion when pressed in the horizontal direction. As another example, the range of "d2 - d1" can be 0.2 mm to 5 mm. In one example, d2 - d1 = 2 mm. In other words, when the inner cap 4 rotates from the Figure 6 closed position in Figure 7 to the open position in

[0059] , the inner cap 4 will lift approximately 2 mm during rotation. This axial lift will help create sufficient space or passage for the liquid product to flow out (even in bulk) for dispensing.

[0060] List of Reference Numerals

[0061] 1 Device for dispensing a liquid product

[0062] 2 Container

[0063] 3 Externally threaded cap

[0064] 4 Inner cap

[0065] 5 Applicator

[0066] 6 massage heads

[0067] 31 cover

[0068] 32 neck ring

[0069] 33 complementary recess

[0070] 34 column

[0071] 35 stopper in external threaded cap

[0072] 40 base

[0073] 41 outer peripheral skirt

[0074] 42 inner peripheral skirt

[0075] 43 recess

[0076] 44 corresponding stopper in inner cap

[0077] 51 nozzle

[0078] 52 outer skirt

[0079] 61 massage protrusion

[0080] 310 curved axial groove

[0081] 311 top plate

[0082] 312 skirt edge

[0083] 321 channel

[0084] 322 axial slot

[0085] 323 reinforcing rib

[0086] 324 circular edge

[0087] 340 hole

[0088] 341 upright dome

[0089] 411 axially extending ridge

[0090] 412 circular edge

[0091] 413 slider

[0092] 414 corresponding circular edge

[0093] 421 overhanging part

[0094] 430 opening

[0095] 521 axially extending rib

[0096] 522 Circumferential lip

[0097] A Axial direction

Claims

1. A device for dispensing a liquid product, comprising: - a container (2) including an opening for dispensing the liquid product; - an externally threaded cap (3) configured to be mounted onto the container (2); - an inner cap (4) capable of engaging with the externally threaded cap (3) and movable on the externally threaded cap from an open position to a closed position, in which open position the liquid product is dispensed from the container (2) and in which closed position the outflow of the liquid product is blocked; and - an applicator (5) coupled to the inner cap (3) and configured to dispense the liquid product from the applicator; characterized in that a channel (321) is formed in a part of the externally threaded cap (3) for engaging with the inner cap (4), and a slider (413) is formed on the inner cap (4), and during rotation of the inner cap (4) relative to the externally threaded cap (3) between the open position and the closed position, the slider (413) slides along the channel (321), and during rotation towards the open position, the inner cap (4) will move axially away from the externally threaded cap (3).

2. The device according to claim 1, wherein: the externally threaded cap (3) includes a cap body (31) having a skirt portion (312) for fastening to the container opening and a top plate (311) formed at the top of the skirt portion (312), and the externally threaded cap (3) includes a neck ring (32) axially extending from the top plate (311), and the channel (321) is formed on the outer peripheral surface of the neck ring (32) and is inclined in the axial direction (A); and the inner cap (4) includes an outer peripheral skirt portion (41) and a base portion (40) formed at the top end of the outer peripheral skirt portion (41), and the slider (413) extends radially inwards from the inner peripheral surface of the outer peripheral skirt portion (41), and during rotation of the inner cap (4) relative to the externally threaded cap (3), the slider (413) will slide within the channel (321).

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

4. The device according to claim 2, wherein, The neck ring (32) includes at least one axial slot (322) located at either end of the channel (321), and when the inner cap (4) rotates to the open position or the closed position, the slider (413) will slide into a corresponding one of the axial slots (322).

5. The device according to claim 4, wherein, The neck ring (32) includes two or four axial slots (322) spaced apart at its circumference, and two channels (321) are formed diagonally on the outer peripheral surface of the neck ring (32), and two or four sliding members (413) are formed diagonally on the inner lid (4), such that the inner lid (4) rotates 90 degrees to 180 degrees from the closed position to the open position.

6. The device according to claim 2, wherein: The inner lid (4) and the external threaded cap (3) respectively include a recess (43) and a complementary recess (33), the recess (43) is coaxial with the outer peripheral skirt (41) of the inner lid (4), and the complementary recess (33) is coaxial with the neck ring (32) on the external threaded cap (3); and A post (34) axially extends from the top plate (311) and is located at the center of the complementary recess (33); Wherein, when the inner lid (4) is in the closed position, the post (34) abuts against the inner peripheral surface of the recess (43) so as to prevent the liquid product from flowing out; when the inner lid (4) is in the open position, the liquid product will pass between the post (34) and the recess (43).

7. The device according to claim 6, wherein: The post (34) is formed with an upright dome (341) at its free end, and when the inner lid (4) is in the closed position, the upright dome (341) abuts against the inner peripheral surface of the recess (43).

8. The device according to claim 7, wherein: A hole (340) is formed in the top plate (311) and is located between the outer peripheral surface of the post (34) and the inner peripheral surface of the complementary recess (33), and an opening (430) is formed in the base (40) and is located within the recess (43), and these holes (340) and the opening (430) form a part of the passage for the liquid product.

9. The device according to claim 8, wherein, When the inner lid (4) is in the closed position, the upright dome (341) cooperatively engages with the recess (43) to block the opening (430).

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

11. The device according to claim 2, wherein: The neck ring (32) has one or more reinforcing ribs (323) that axially extend on the inner peripheral surface of the neck ring (32) at positions corresponding to the channels (321).

12. The device according to claim 3, wherein: The external threaded cap (3) includes a curved axial slot (310) formed on the top plate (311), the curved axial slot (310) is coaxial with the neck ring (32), and the depth of the slot varies in the axial direction (A); and The inner lid (4) includes a protruding portion (421) axially extending from an inner peripheral skirt portion (42), and during rotation of the inner lid (4) relative to the external threaded cap (3), the protruding portion (421) will slide within the curved axial groove (310).

13. The device according to any one of the preceding claims, wherein, The applicator (5) includes a massage head, and the massage head is made of a material selected from the group including TPE, elastomeric plastics, PU (polyurethane resin), and silicone rubber, and has a Shore hardness of grade A, and the Shore hardness is preferably between 20 and 90.

14. The device according to any one of the preceding claims, wherein, The applicator (5) includes a plurality of nozzles (51), and the massage head (6) will be assembled onto the applicator (5).

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

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