Cosmetic composition spraying device with piston-spring structure
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- LOREAL SA
- Filing Date
- 2022-10-20
- Publication Date
- 2026-07-31
Smart Images
Figure 0007898617000001 
Figure 0007898617000002 
Figure 0007898617000003
Abstract
Description
Technical Field
[0001]
Summary of the Invention
[0002] This summary is provided to introduce some concepts in a simplified form that will be further described in the "Detailed Description of the Invention" below. This summary is not intended to identify the main features of the subject matter recited in the claims, nor is it intended to be used as an aid in interpreting the technical scope of the claims.
[0003] Cosmetic compositions such as liquid lotions containing hyaluronic acid are typically applied to specific parts of the user's body (e.g., face, hands, arms). This is done through shallow transdermal delivery (i.e., skin delivery at a shallow depth). For more effective transdermal delivery of such cosmetics, it is desirable to spray the cosmetics into fine droplets on the order of micrometers. And it is also desirable to inject or spray it at high speed onto the desired part of the user's body. However, when the cosmetics are sprayed, vibrations or shock waves can be transmitted to the user as a result. This can cause discomfort to the user.
[0004] In one aspect, the present disclosure describes a system for spraying and ejecting cosmetics for transdermal delivery. The system includes a tank configured to hold the cosmetics. It also includes a nozzle fluidly connected to the tank. The nozzle comprises a tip and a venturi tube. The venturi tube has a longitudinal central axis and an internal passage extending along the longitudinal central axis. The internal passage is fluidly connected to the tank via an orifice defined in the venturi tube. The internal passage comprises a converging section, a diverging section, and a throat section located between the converging and diverging sections. The system also includes a cylinder. The cylinder has a longitudinal central axis, an end wall perpendicular to the longitudinal central axis, a circumferential wall extending from the end wall along the longitudinal central axis, and an outlet hole formed in the end wall. The outlet hole is fluidly connected to the inlet of the converging section of the venturi tube. The system also includes a piston. The piston is positioned within the cylinder and is displaceable within the cylinder along its longitudinal central axis. The piston, in cooperation with the cylinder, defines an air intake space within the cylinder. This air intake space is fluidly connected to the inlet of the converging section of the venturi tube via the outlet hole of the cylinder. The system also includes a drive unit, configured to displace the piston in a direction that increases the volume of the air intake space within the cylinder. The system also includes an elastic member, configured to deform in response to the piston's displacement and store elastic energy while the piston is displaced in a direction that increases the volume of the air intake space. The drive unit includes an elastic energy release mechanism for releasing the elastic energy stored in the elastic member. This causes the piston to lunge in a direction that decreases the volume of the air intake space. This lunge causes vibration from the piston to the venturi tube. The system also includes a damper, located on the nozzle and positioned between the venturi tube and its tip. The damper described above is configured to reduce the vibrations described above.
[0005] In another aspect, an apparatus for transdermal delivery of sprayed cosmetics will be described. The apparatus includes the system and a housing. The housing will at least partially house the disclosed system.
[0006] In yet another aspect, a kit for transdermal delivery of sprayed cosmetics is disclosed. The kit includes the apparatus and a plurality of nozzles, where the nozzle included in the apparatus is the first of the plurality of nozzles, and the plurality of nozzles are configured to be connectable to the apparatus.
[0007] In another aspect, the present disclosure describes a method for spraying and ejecting cosmetics for transdermal delivery. The method includes the step of filling a tank with cosmetics. The tank is fluidly connected to a nozzle having a tip and a venturi tube. The connection is made to an internal passage of the venturi tube via an orifice defined in the venturi tube. The internal passage comprises a converging section, a diverging section, and a throat section located between the converging and diverging sections. The method also includes the step of displacing a piston in the cylinder in a direction that increases the volume of an air intake space within the cylinder. The air intake space is defined between the piston and the end wall of the cylinder. An outlet hole formed in the end wall of the cylinder is fluidly connected to the inlet of the converging section of the venturi tube. The method also includes the step of deforming an elastic member. The elastic member is arranged to deform in response to the displacement of the piston and to store elastic energy internally. This deformation occurs while the piston is displaced in a direction that increases the volume of the air intake space. The above method also includes a step of releasing the elastic energy stored in the elastic member. This causes the piston to lunge in a direction that reduces the volume of the air intake space. This further causes vibration from the piston to the venturi tube. The above method also includes a step of spraying and ejecting cosmetics to the outside. The cosmetics are supplied from the tank to the internal passage of the venturi tube. This spraying and ejection is performed by air pushed out of the cylinder by the lunge of the piston. The air is pushed out through the outlet hole in the end wall of the cylinder. The above method also includes a step of reducing the vibration. This reduction is performed using a damper placed between the venturi tube and the tip of the nozzle. [Brief explanation of the drawing]
[0008] The above aspects of the present invention and its many associated advantages will be better understood and therefore more readily apparent by referring to the following detailed description in conjunction with the accompanying drawings.
[0009] [Figure 1]This is a schematic block diagram of an exemplary apparatus for transdermal delivery of sprayed liquid using this technology.
[0010] [Figure 2] This is a schematic diagram of an exemplary system for spraying and ejecting cosmetics for transdermal delivery using this technology.
[0011] [Figure 3] This is an enlarged cross-sectional view of the Venturi tube in the exemplary system shown in Figure 2, which utilizes this technology.
[0012] [Figure 4] This is a perspective view of the various gears forming the drive force transmission mechanism in the drive unit of the exemplary system shown in Figure 2, based on this technology.
[0013] [Figure 5] This is an example of a device using this technology.
[0014] [Figure 6] This is an enlarged nozzle of an exemplary apparatus using this technology, as shown in Figure 5.
[0015] [Figure 7A] This diagram shows the operating state of the example apparatus described above, as shown in Figure 5, in this technology. [Figure 7B] This diagram shows the operating state of the example apparatus described above, as shown in Figure 5, in this technology. [Figure 7C] This diagram shows the operating state of the example apparatus described above, as shown in Figure 5, in this technology. [Figure 7D] This diagram shows the operating state of the example apparatus described above, as shown in Figure 5, in this technology.
[0016] [Figure 8] This is an example kit using this technology.
[0017] [Figure 9]A diagram showing a load cell for measuring the vibration of a device according to the present technology.
[0018] [Figure 10A] A graph showing the vibration of the above device without the above damper according to the present technology.
[0019] [Figure 10B] A graph showing the reduced vibration of the above device when the above damper is used according to the present technology.
[0020] [Figure 11] An exemplary method for spraying and injecting cosmetics for transdermal delivery according to the present technology.
Embodiments for Carrying Out the Invention
[0021] Exemplary embodiments are illustrated and described. However, it will be understood that various changes can be made without departing from the spirit and scope of the present invention.
[0022] This specification describes a novel system. This system is for spraying and injecting a liquid (especially a high molecular weight liquid) for transdermal delivery. Also described is a novel device for transdermal delivery of a liquid. This device includes the above system.
[0023] In particular, this technology provides novel systems and devices for spraying and ejecting liquids for transdermal delivery. These do not require replaceable, i.e., single-use / disposable power sources such as high-pressure gas cartridges. Therefore, the liquid can be sprayed and ejected as many times as the user desires. Furthermore, the objective of this technology is to provide novel systems and devices for spraying and ejecting liquids for transdermal delivery. These do not require external power sources such as air compressors or air pumps. Therefore, they are compact and easy to move, transport, and handle. Finally, this technology features shock absorption / cushioning properties. This is to administer cosmetics in a comfortable manner for the user.
[0024] Furthermore, the systems, apparatus, and methods described herein do not require a replaceable power source. This refers to a single-use / disposable power source, such as a high-pressure gas cartridge, for spraying and ejecting the liquid for transdermal delivery. Thus, the systems, apparatus, and methods described herein can repeatedly spray and eject the liquid. In addition, the systems, apparatus, and methods described herein do not require any external power source, such as an air compressor or air pump. That is, a high-speed air jet for spraying and discharging the liquid can be generated internally. Thus, the systems and apparatus as a whole can be compact enough to be portable and easy to move, transport, and handle.
[0025] In some embodiments, the technology includes a system for spraying and ejecting cosmetics for transdermal delivery. The system includes a tank configured to hold the cosmetics. It also includes a nozzle fluidly connected to the tank. The nozzle comprises a tip and a venturi tube. The venturi tube has a longitudinal central axis and an internal passage extending along the longitudinal central axis. The internal passage is fluidly connected to the tank via an orifice defined in the venturi tube. The internal passage comprises a converging section, a diverging section, and a throat section located between the converging and diverging sections. The system also includes a cylinder. The cylinder has a longitudinal central axis, an end wall perpendicular to the longitudinal central axis, a circumferential wall extending from the end wall along the longitudinal central axis, and an outlet hole formed in the end wall. The outlet hole is fluidly connected to the inlet of the converging section of the venturi tube. In some embodiments, the system further includes a piston. The piston is positioned within the cylinder and is displaceable within the cylinder along its longitudinal central axis. The piston, in cooperation with the cylinder, defines an air intake space within the cylinder. This air intake space is fluidly connected to the inlet of the converging section of the venturi tube via the outlet hole of the cylinder. The system also includes a drive unit, configured to displace the piston in a direction that increases the volume of the air intake space within the cylinder. The system also includes an elastic member, configured to deform in response to the displacement of the piston and store elastic energy while the piston is displaced in a direction that increases the volume of the air intake space. The drive unit includes an elastic energy release mechanism for releasing the elastic energy stored in the elastic member. This causes the piston to lunge in a direction that decreases the volume of the air intake space. This lunge causes vibration from the piston to the venturi tube. The system also includes a damper, located on the nozzle and positioned between the venturi tube and its tip. The damper described above is configured to reduce the vibrations described above.
[0026] In some embodiments, the damper is selected from the group consisting of elastic springs, sponges, air cushions, rubber cushions, bellows, air cylinder dampers, and combinations thereof. In some embodiments, the damper includes an elastomer. The elastomer is selected from the group consisting of rubber, nitrile rubber, fluororubber, silicone, thermoplastic elastomer (TPE), polyurethane, and combinations thereof. In some embodiments, the elastomer has a hardness of about 20 to 70 Shore A. In some embodiments, the elastomer has a hardness of about 30 to 60 Shore A.
[0027] In some embodiments, the system further includes a silencer, which is positioned between the damper and the tip. The silencer is configured to further reduce the vibration. In some embodiments, the vibration is reduced to a force of approximately 0 to 20 gf (grams-force).
[0028] In some embodiments, the piston includes a longitudinal central axis, an end wall opposite the end wall of the cylinder, and a circumferential wall extending from the end wall along the longitudinal central axis. Here, a rack extending along the longitudinal central axis is formed on the outer surface of the circumferential wall of the piston. The drive unit includes a sector gear, which has teeth only in a specific angular range and meshes with the rack of the piston to drive it linearly. The combination of the sector gear and the rack forms the elastic energy release mechanism.
[0029] In some embodiments, the drive unit further includes a power supply and an electric motor. The electric motor is electrically connected to the power supply. The electric motor is configured to directly or indirectly rotate the sector gear.
[0030] In some embodiments, the elastic member is a coil spring. The coil spring is at least partially housed inside the piston. In some embodiments, the tank is fluidly connected to the throat portion of the venturi tube. In some embodiments, the cosmetic is a cosmetic or aesthetic cosmetic. In some embodiments, the cosmetic may be a drug, makeup, or skin cream.
[0031] In another aspect, this disclosure describes an apparatus for the transdermal delivery of sprayed cosmetics. The apparatus includes the system described herein and a housing. The housing at least partially houses the system.
[0032] In yet another aspect, this disclosure describes a kit, which is for the transdermal delivery of sprayed cosmetics. The kit includes the apparatus described herein and a plurality of nozzles, where the nozzle included in the apparatus is the first of the plurality of nozzles, and the plurality of nozzles are configured to be connectable to the apparatus. In some embodiments, each of the plurality of nozzles has an outlet hole of a different size from the other nozzles of the plurality of nozzles. In some embodiments, each of the plurality of nozzles is configured to dispense different cosmetics. In some embodiments, the plurality of nozzles are disposable.
[0033] In another aspect, the present disclosure describes a method for spraying and ejecting cosmetics for transdermal delivery. The method includes filling a tank with cosmetics. The tank is fluidly connected to a nozzle having a tip and a venturi tube. The connection is made to an internal passage of the venturi tube via an orifice defined in the venturi tube. The internal passage comprises a converging section, a diverging section, and a throat section located between the converging and diverging sections. The method also includes displacing a piston in the cylinder in a direction that increases the volume of an air intake space within the cylinder. The air intake space is defined between the piston and the end wall of the cylinder. An outlet hole formed in the end wall of the cylinder is fluidly connected to the inlet of the converging section of the venturi tube. The method also includes deforming an elastic member. The elastic member is arranged to deform in response to the displacement of the piston and to store elastic energy internally. This deformation occurs while the piston is displaced in a direction that increases the volume of the air intake space. The above method also includes a step of releasing the elastic energy stored in the elastic member. This causes the piston to lunge in a direction that reduces the volume of the air intake space. This further causes vibration from the piston to the venturi tube. The above method also includes a step of spraying and ejecting cosmetics to the outside. The cosmetics are supplied from the tank to the internal passage of the venturi tube. This spraying and ejection is performed by air pushed out of the cylinder by the lunge of the piston. The air is pushed out through the outlet hole in the end wall of the cylinder. The above method also includes a step of reducing the vibration. This reduction is performed using a damper placed between the venturi tube and the tip of the nozzle.
[0034] In some embodiments, the method further includes a step of further reducing the vibration. This reduction is performed using a silencer positioned between the damper and the tip of the nozzle. In some embodiments, the vibration is reduced to a force of approximately 0 to 20 gf (grams-force).
[0035] Several exemplary embodiments of this technology are shown in Figures 1 to 8. In each figure, the scale ratios of the width, length, height, diameter, etc., of each element are not constant and may differ from the actual parameters. It should be noted that in certain figures, certain elements or features may be depicted larger or smaller than they actually are for emphasis.
[0036] Where used herein, terms relating to direction such as “upper,” “lower,” “up,” “down,” “upward,” “downward,” “up,” “down,” “right,” and “left” should be understood in relation to the orientation of the system and apparatus in the drawings. The orientation may or may not coincide with the orientation in actual use. Furthermore, as will be obvious to those skilled in the art, wherein this specification, the terms “distal” or “distally” mean the direction away from the venturi tube from which the sprayed liquid is ejected or discharged. On the other hand, the above terms "proximal" or "proximally" refer to the direction closer to the Venturi tube.
[0037] Figure 1 is a schematic block diagram of an exemplary apparatus for transdermal delivery of sprayed cosmetics according to the present technology. Apparatus 1 may include a system 10, which is for spraying and ejecting liquids for transdermal delivery and is described in detail herein. Apparatus 1 also includes a housing 20 that houses the system 10. In the illustrated embodiment, the housing 20 substantially encloses the entire system 10, except for the outlet of the venturi tube for discharging the sprayed liquid (shown in Figure 2). However, the housing 20 may also house only a portion of the system 10. The cosmetic composition that apparatus 1 is intended to spray and eject is, in particular, a cosmetic such as a liquid lotion containing hyaluronic acid for transdermal delivery. However, apparatus 1 and therefore system 10 may be used for spraying and ejecting water, oils, various lotions, etc.
[0038] Furthermore, as shown in Figure 2, the system 10 further comprises a tank 100. The tank 100 is for holding a certain amount of cosmetic (F), for example, a few milliliters to several hundred milliliters of cosmetic (F). The tank 100 is preferably made of, for example, transparent plastic or glass, so that the contents and / or amount of the cosmetic can be seen from the outside. In some embodiments, translucent or opaque materials are used to make the tank 100. The system 10 also comprises a venturi tube 200, a cylinder 300 positioned adjacent to the venturi tube 200, and a piston 400 slidably positioned within the cylinder 300. The venturi tube 200 may be formed from a plastic material having sufficient rigidity, such as acrylonitrile butadiene styrene (ABS), polypropylene (PP), or polycarbonate (PC). The cylinder 300 and the piston 400 may also be formed from the same material. In some embodiments, both the cylinder 300 and the piston 400 are formed from a suitable metal (or metal alloy) material.
[0039] The system 10 may additionally include a drive unit 500. The drive unit 500 is operably (i.e., mechanically) associated with the piston 400. The system 10 also includes an elastic member 600 (for example, such as a coil spring). The elastic member 600 is also mechanically associated with the piston 400. The system 10 also includes an elongated guide rod 700. The guide rod 700 is arranged to be surrounded by the coil spring 600.
[0040] In particular, as shown in Figure 1, the drive unit 500 may mainly comprise a gear group 500a and a power supply assembly 500b, which will be described in detail herein. In this embodiment, the power supply assembly 500b includes a battery (or power supply) 520, a motor 530 (or electric motor), and a switch 580 interposed between them. It should be noted that, for convenience, the battery 520 and the switch 580 are not shown in drawings other than Figure 1.
[0041] Figure 2 is a schematic diagram of an exemplary system for spraying and ejecting cosmetics for transdermal delivery according to the present technology. In some embodiments, the system (e.g., System 1) includes a cylinder 300 and a piston 400.
[0042] In some embodiments, the cylinder 300 includes a longitudinal central axis X2, an end (proximal end) wall 310 facing the venturi tube 200 and perpendicular to the longitudinal central axis X2, and a circumferential wall 320 extending from the end wall 310 along the longitudinal central axis X2. That is, the cylinder 300 is a hollow body with one end open. In some embodiments, the cylinder 300 is fixedly supported by the frame of the system 10 (for example, a sub-housing of the device 1 (not shown)). The cylinder 300 further includes an outlet hole 330 formed in its end wall 310. The outlet hole 330 is fluidly connected to the inlet 232 of the convergence portion 230 of the venturi tube 200. In this embodiment, the venturi tube 200 is directly connected to the cylinder 300. As a result, the inlet 232 of the converging section 230 of the venturi tube 200 and the outlet hole 330 of the cylinder 300 are aligned with each other. However, it is also possible to adopt a configuration in which the inlet 232 of the converging section 230 and the outlet hole 330 of the cylinder 300 are connected via a pipeline or conduit line.
[0043] Within the cylinder 300, the piston 400 is positioned to be smoothly displaceable along the longitudinal central axis X2 of the cylinder 300. The piston 400 comprises a longitudinal central axis X3, an end (proximal end) wall 410 facing the end wall 310 of the cylinder 300, and a circumferential wall 420 extending from the end wall 410 along the longitudinal central axis X3. Furthermore, the piston 400 may include a rack 430 extending along the longitudinal central axis X3. In some embodiments, the rack 430 is integrally formed on the outer surface of the circumferential wall 420 of the piston 400. In particular, it is formed in about half of the distal end area of the circumferential wall 420. Although not shown in Figure 2, in some embodiments, the piston 400, in cooperation with the cylinder 300, defines an air intake space V within the cylinder 300 (shown in Figures 7A to 7D). In some embodiments, the air intake space V is in fluid communication with the inlet 232 of the converging portion 230 of the venturi tube 200 via the outlet hole 330 of the cylinder 300.
[0044] The piston 400 may further include an O-ring (packing) 440. The O-ring 440 is made of, for example, an elastomer material. The O-ring 440 is fitted into a circular groove 450 formed in the end wall 410 of the piston 400. The O-ring 440 helps maintain airtightness between the piston 400 and the inner surface of the cylinder 300. In this embodiment, the cross-section of the piston 400 is circular in the end wall portion where the O-ring 440 is located. However, in some embodiments, the cross-section of the piston 400 in the circumferential wall portion is a partial circle. This is a shape in which a portion of the circle is cut off along a straight line parallel to its diameter. This is to ensure a flat surface on the outer surface of the piston in order to position the rack 430 as described above. In other embodiments, other shapes may be used for the cross-section of the circumferential wall portion of the piston 400. Although not shown, in this embodiment, the system 10 further includes a mechanism or feature for preventing the piston 400 from rotating relative to the cylinder 300.
[0045] In the state shown in Figure 2, that is, when the end wall 310 of the cylinder 300 and the end wall 410 of the piston 400 are in contact with each other, the distal end of the piston 400 may protrude somewhat from the distal end of the cylinder 300. In other words, the length of the piston 400 along its longitudinal central axis X3 may be somewhat greater than the length of the circumferential wall 320 of the cylinder 300 along its longitudinal central axis X2. Therefore, in the state shown in Figure 2, a portion of the rack 430 integrally formed on the outer circumferential surface of the piston 400 protrudes from the distal end of the cylinder 300. In this embodiment, a linear notch 340 is formed in the circumferential wall 320 of the cylinder 300. This is to expose at least a portion of the rack 430 of the piston 400. As will be described in detail herein, in some embodiments, the sector gear 510 of the drive unit 500 engages with the rack 430 through this notch 340 in the peripheral wall 320 of the cylinder 300.
[0046] The system 10 described above includes the drive unit 500 and the elastic member 600, which are mechanically linked to each other. The drive unit 500 may be configured to displace the piston 400 distally, that is, in a direction that increases the volume of the air intake space V within the cylinder 300. On the other hand, the elastic member 600 may be arranged to deform in response to the displacement of the piston 400, and accumulates elastic energy (mechanical potential energy) inside while the piston 400 is displaced distally (i.e., in a direction that increases the volume of the air intake space V). Therefore, the system 10 in this embodiment can be called a "spring load system". In this embodiment, the elastic member 600 is a coil spring. The coil spring is at least partially (for example, about half) housed inside the hollow piston 400.
[0047] The drive unit 500 may additionally include an elastic energy release mechanism M. In this embodiment, the elastic energy release mechanism M is configured to release the elastic energy stored in the elastic member 600 at regular intervals. This causes the piston 400 to rush (or dash) in the proximal direction (i.e., in the direction in which the volume of the air intake space V decreases). More specifically, the drive unit 500 includes a sector gear 510. The sector gear 510 has teeth only in a specific angular range, such as 90° to 300°. The sector gear 510 meshes with the rack 430 of the piston 400 and is arranged to drive it linearly in one direction (i.e., to the left in the figure). In this embodiment, the combination of the sector gear 510 and the rack 430 forms the elastic energy release mechanism M, which is for releasing the stored elastic energy at regular intervals. That is, the restraint on the piston 400 is released at the moment the last tooth of the sector gear 510 disengages from the last tooth of the rack 430. This also instantaneously releases the elastic energy stored in the elastic member 600. However, a different type of elastic energy release mechanism may be employed, and it may be configured to release the elastic energy stored in the elastic member 600 only when desired. In some embodiments, as described in detail in Figures 7A to 7D, the thrust of the piston 400 generates vibrations (or shock waves) from the piston 400 to the venturi tube (200).
[0048] In some embodiments, the drive unit 500 comprises the power supply 520 and the electric motor 530. For example, the power supply 520 is a rechargeable battery such as a lithium-ion battery. In some embodiments, the electric motor 530 is electrically connected to the power supply 520 and indirectly (i.e., via a gear train for power transmission) rotates the sector gear 510. The power supply 520, the electric motor 530, and the switch 580 interposed between them constitute the power supply assembly 500b of the drive unit 500, as described herein. In this embodiment, the sector gear 510 is rotated by the electric motor 530 via the gear group 500a in only one direction, i.e., counterclockwise in Figure 2. In another embodiment, the sector gear 510 may be driven directly by the electric motor 530. However, in this case, a motor with high torque and therefore large size is required. Therefore, it is desirable to drive the sector gear 510 via a suitable reduction mechanism consisting of a gear train, as illustrated herein.
[0049] The drive unit 500 may further include a latch 570 that engages with the spur gear 560. In some embodiments, the latch 570 is positioned to restrict the direction of rotation of the spur gear 560. As a result, the spur gear 560 rotates in only one direction (i.e., clockwise in Figure 2). In another embodiment, the latch 570 engages with any other gear besides the spur gear 560. In some embodiments, the drive unit 500 does not include the latch 570.
[0050] In some embodiments, the system 10 additionally includes an elongated spring guide rod 700. The spring guide rod 700 is positioned to be surrounded by the coil spring 600. In this embodiment, the base end 710 of the guide rod 700 is supported by the frame of the system 10 (not shown, i.e., the sub-housing of the device 1). In another embodiment, the spring guide rod 700 may be supported by the housing 20 of the device 1 itself. The spring guide rod 700 is positioned to at least partially enter the piston 400 when the piston 400 is displaced distally (i.e., in the direction in which the volume of the air intake space V increases).
[0051] Figure 3 is an enlarged cross-sectional view of the Venturi tube in the exemplary system shown in Figure 2, according to the present technology. In some embodiments, the system 10 includes the tank 100 for holding the cosmetic (or liquid) L. In this embodiment, the tank 100 is detachably connected to the Venturi tube 200 in a liquid-tight manner. The connection is by screw (see Figure 3).
[0052] In some embodiments, the tank 100 has a flange 110 on its opening side. The venturi tube 200 may also have a flange 260 corresponding to the flange 110 of the tank 100. In some embodiments, the tank 100 is positioned above the venturi tube 200, with its flange 110 in contact with the flange 260 of the venturi tube 200. This arrangement is particularly preferred because, during the operation of the system 10, the action of gravity facilitates the supply of cosmetic L into the venturi tube 200. However, the orientation of the tank 100 relative to the venturi tube 200 is not limited to this and can be changed as appropriate as needed.
[0053] In some embodiments, the Venturi tube 200 includes a longitudinal central axis X1 and an internal passage 210 extending continuously along the longitudinal central axis X1. In some embodiments, the internal passage 210 is fluidly connected to the tank 100 via an orifice 220 defined in the Venturi tube 200. As shown in Figure 3, the internal passage 210 may include a converging section 230, a diverging section 240, and a throat section 250. These are continuously connected along the longitudinal central axis X1. The throat section 250 may be located between the converging section 230 and the diverging section 240. In some embodiments, the tank 100 is fluidly connected to the throat section 250 of the Venturi tube 200 via the orifice 220, as described above. The inner diameter of the orifice 220 may be configured such that, when the pressure inside the venturi tube 200 is equal to atmospheric pressure, the cosmetic L does not fall out naturally inside the venturi tube 200 due to the viscosity of the cosmetic L.
[0054] In some embodiments, the converging section 230 has an inlet 232 and an outlet 234 located at both ends. The throat section 250 also has an inlet 252 and an outlet 254 located at both ends. Furthermore, the diverging section 240 has an inlet 242 and an outlet 244 located at both ends. The outlet 234 of the converging section 230 and the inlet 252 of the throat section 250 are smoothly and continuously connected to each other. Similarly, the outlet 254 of the throat section 250 and the inlet 242 of the diverging section 240 are smoothly and continuously connected to each other. In some embodiments, the inner diameter D3 of the throat section 250 is constant. In some embodiments, the inner diameter (minimum inner diameter) D4 of the outlet 234 of the converging section 230 is the same as the inner diameter D3 of the throat section 250. Furthermore, the inner diameter (minimum inner diameter) D5 of the inlet 242 of the diverging section 240 is the same as the inner diameter D3 of the throat section 250. In some embodiments, the inner diameter of the converging section 230 decreases monotonically (linearly) toward the throat section 250. On the other hand, the inner diameter of the diverging section 240 increases monotonically (linearly) toward the direction away from the throat section 250. However, the inner diameters of the converging section and the diverging sections 230 and 240 may decrease and increase curvilinearly, respectively.
[0055] In some embodiments, the ratio of the maximum inner diameter D1 of the converging section 230 (i.e., the inner diameter of the inlet 232), the inner diameter D3 of the throat section 250, and the maximum inner diameter D2 of the diverging section 240 (i.e., the inner diameter of the outlet 244), i.e., D1:D3:D2, is 1:0.1 to 0.7:1 to 1.5. This is based on the maximum inner diameter D1 of the converging section 230. However, this ratio is merely an example, and various other ratios may be adopted as needed.
[0056] Figure 4 is a perspective view of various gears forming the drive force transmission mechanism in the drive unit 500 of the exemplary system shown in Figure 2, according to the present technology. In some embodiments, the drive unit 500 includes a gear group 500a. In some embodiments, a gear train including a reduction mechanism for the drive unit 500, i.e., the gear group 500a of the drive unit 500, is disclosed herein. The gear group 500a of the drive unit 500 may include a pinion 540. The pinion 540 (such as a bevel gear type, worm gear type, or spur gear type) is fixedly connected to the output shaft 532 of the electric motor 530. Furthermore, the gear group 500a of the drive unit 500 may further include two types of gears 550 and 560. These transmit the rotational motion of the pinion 540 to the sector gear 510, thereby driving it to rotation. In such embodiments, the gears 550, 560, and the sector gear 510 are rotatably supported by the frame of the system 10 (not shown, i.e., the sub-housing of the device 1). In such embodiments, the electric motor 530 is fixedly supported by the frame of the system 10 (not shown). Therefore, the pinion 540 is also rotatably supported by the frame of the system 10 (not shown). In another embodiment, the gears 510, 550, and 560 may be rotatably supported by the housing 20 of the device 1 itself. In some embodiments, the gear 550 that meshes with the pinion 540 is a bevel gear. In other embodiments, the gear 560 that meshes with both the bevel gear 550 and the sector gear 510 is a spur gear.
[0057] In other embodiments, the spur gear 560 functions as an intermediate gear. In such embodiments, both the sector gear 510 and the bevel gear 550 have a structure in which two types of gear portions are stacked along the direction of the axis of rotation. The sector gear 510 may include a first portion 512. The first portion 512 has teeth only in a specific angular range along its root circle. Furthermore, the sector gear 510 may include a second portion 514 integrally connected to the first portion 512. In some embodiments, the second portion 514 of the sector gear 510, i.e., the spur gear portion, has teeth along the entire circumference of its root circle. In some embodiments, the tip circle diameter of the second portion 514 is smaller than that of the first portion 512.
[0058] In some embodiments, the bevel gear 550 also includes a first portion 552 and a second portion 554. The first portion 552 includes a tooth row arranged circumferentially on a conical surface. The second portion 554 is integrally connected to the first portion 552 and consists of a spur gear having a diameter smaller than the minimum diameter of the first portion 552. In some embodiments, the pinion 540, fixedly mounted on the output shaft 532 of the electric motor 530, meshes with the first portion 552 of the bevel gear 550. The second portion 554 of the bevel gear 550, which rotates integrally with the pinion 540, meshes with the spur gear 560. Furthermore, in some embodiments, the spur gear 560 meshes with the second portion 514 of the sector gear 510.
[0059] As a result, during operation, the high-speed rotation of the pinion 540 causes the sector gear 510 to rotate at a predetermined lower speed, for example, a few revolutions per second. The piston 400 is displaced distally at regular intervals by the rotation of the sector gear 510 thus produced. In this embodiment, the number of teeth on the rack 430 of the piston 400 is approximately equal to the number of teeth on the first portion 512 of the sector gear 510. However, the technology is not limited thereto.
[0060] Figure 5 shows an exemplary apparatus 10 according to the present technology. In some embodiments, the apparatus 10 includes a housing 20, a piston 400, a venturi tube 200, a damper 800, a silencer 900, and a tip 270. It should be understood that the venturi tube 200 and the tip 270 may be collectively referred to as a nozzle 910. In some embodiments, the nozzle 910 also includes the damper 800 and the silencer 900. Although Figure 5 shows the apparatus 10 including the housing 20, it should be understood that the apparatus does not necessarily include the housing 20.
[0061] In some embodiments, the apparatus 10 includes a damper 800. The damper 800 is configured to reduce vibrations generated by the piston 400, as shown in Figures 7A to 7D. In some embodiments, the damper 800 is bellows-shaped, as shown in Figure 5. However, it should be understood that the damper can take any number of forms. These include, but are not limited to, elastic springs, sponges, air cushions, rubber cushions, air cylinder dampers, and combinations thereof. In some embodiments, the damper 800 is made of an elastomer. In some embodiments, the damper is made of rubber, nitrile rubber, fluororubber, silicone, thermoplastic elastomer (TPE), polyurethane, and combinations thereof. In some embodiments, the damper is located between the venturi tube 200 and the tip 270 of the nozzle 910. In some embodiments, the damper may be located elsewhere on the apparatus 10. These include, but are not limited to, the tip 270 and the space between the venturi tube 200 and the housing 20. In some embodiments, the elastomer has a hardness of approximately 20 to 70 Shore A. In some embodiments, the elastomer has a hardness of approximately 30 to 60 Shore A. During operation, the damper absorbs vibrations generated by the piston as the piston lunges forward. This is further illustrated in Figures 7A to 7D.
[0062] Figure 6 shows an expanding nozzle 910 of the exemplary apparatus 10 shown in Figure 5, according to the present technology. In some embodiments, the apparatus 10 includes a housing 20, a piston 400, a nozzle 910 (including a venturi tube 200 and a tip 270), an elastomer 800, and a silencer 900. The arrows in Figure 6 indicate how vibrations (shock waves) are transmitted throughout the apparatus when the piston thrusts forward. The thrust of the piston occurs in a direction that reduces the volume of the air intake space within the cylinder. This is shown in more detail in Figures 7A to 7D.
[0063] Figures 7A to 7D show the operating state of the exemplary apparatus 10 shown in Figure 5, according to the present technology. In some embodiments, the apparatus includes a housing 20, a drive unit 500, a piston 400, a nozzle 910, and an elongated guide rod 700. The drive unit 500 may include any number of gears, as shown in Figure 4. The nozzle 910 includes a venturi tube 200 and a damper 800. Elastic members (such as elastic member 600) may also be included in the apparatus 10, however, they should be understood to be omitted here for clarity.
[0064] In each of Figures 7A to 7D, it should be understood that a tank (such as tank 100 in Figures 2 and 3) may be attached to the Venturi tube 200 as shown in Figures 2 and 3. During operation, the tank is filled with the cosmetic. In some embodiments, the tank is fluidly connected to the nozzle 910. The nozzle 910 includes the Venturi tube 200. In some embodiments, the tank is connected to the nozzle 910. This connection is made through an orifice defined in the Venturi tube 200 and through an internal passage of the Venturi tube 200 (see Figure 3).
[0065] In Figure 7A, the piston 400 is displaced in a direction that increases the volume of the air intake space within the cylinder. This is indicated by the arrow in Figure 7A. In some embodiments, the air intake space is defined between the piston 400 and the end wall of the cylinder. An outlet hole formed in the end wall of the cylinder is fluidly connected to the inlet of the converging section of the venturi tube 200.
[0066] As shown in Figure 7B, while the piston is displaced in a direction that increases the volume of the air intake space, the elastic member (such as the elastic member 600 in Figure 2) deforms in accordance with the displacement of the piston and stores elastic energy inside. In some embodiments, the elastic member is a spring.
[0067] In Figure 7C, the elastic energy stored in the elastic member is released. This causes the piston 400 to lunge forward in a direction that reduces the volume of the air intake space. This further causes vibration from the piston to the venturi tube. The arrow indicates the direction of the vibration. The burst shape, on the other hand, indicates the impact of the piston 400. It should be understood that as the piston 400 lunges forward, the cosmetic is sprayed and ejected to the outside. The cosmetic is supplied from the tank to the internal passage of the venturi tube. This spraying and ejection is carried out by air pushed out of the cylinder through the outlet hole in the end wall of the cylinder as the piston 400 lunges forward. The vibration is reduced by the damper 800 positioned between the venturi tube 200 and the tip of the nozzle 910.
[0068] In Figure 7D, the piston 400 returns to its initial position, and the process restarts. In some embodiments, a user can determine the timing of when the device 10 sprays and dispenses the cosmetic. This is done via an actuator on the device or via an application communicably connected to the device 10. In some embodiments, the user can manually determine the timing of when the device 10 sprays and dispenses the cosmetic. This is done, for example, via a trigger or slide wheel on the device. In some embodiments, by activating the actuator once, the device 10 continues to transition through the states shown in Figures 7A to 7D. This continues until the actuator is activated a second time.
[0069] Figure 8 shows an exemplary kit 2000 according to the present technology. In some embodiments, the apparatus 10 is part of a larger kit 2000.
[0070] In some embodiments, nozzle 910A is the first nozzle. In some embodiments, the kit 2000 includes a plurality of nozzles 910A, 910B, and 910C. In some embodiments, each nozzle 910 includes a venturi tube, a tip, a damper, and a silencer. In some embodiments, some nozzles 910 may include the damper and silencer, but others may not. In some embodiments, the nozzles 910A, 910B, and 910C have different sizes from each other. In such embodiments, each nozzle of the plurality of nozzles 910A, 910B, and 910C is configured to dispense different cosmetics. In some embodiments, each nozzle of the plurality of nozzles 910A, 910B, and 910C are interchangeable. In these embodiments, each nozzle 910 is the same size. In some embodiments, the outlets of each nozzle of the plurality of nozzles 910A, 910B, and 910C have different sizes. This is to better dispense cosmetics of different consistencys or viscosities.
[0071] In some embodiments, each of the nozzles 910A, 910B, and 910C is disposable. However, in other embodiments, each of the nozzles 910A, 910B, and 910C is reusable. [Examples]
[0072] The above-mentioned device (shown in Figure 5), which has both the damper 800 and the silencer 900, was tested. This was to determine whether and to what extent the vibration (or shock wave) was reduced.
[0073] Figure 9 shows a load cell used to measure the vibration of a device according to this technology.
[0074] To test this, a test apparatus was prepared. The test apparatus includes a holder 1010, a bracket 1020, and a base plate 1045. The test apparatus also includes a load cell plate 1025, a first load cell stopper 1030, and a second stopper 1040. A load cell 1035 is placed below the load cell plate and on top of the base plate 1045. The apparatus 1000 described herein is placed on the test apparatus as shown in Figure 9. The impact energy (or vibration) of the apparatus 1000 was measured by the test apparatus. The measurement was performed during continuous piston movement. Measurements were taken both without the damper 800 and silencer 900 (Figure 10A) and with the damper 800 and silencer 900 (Figure 10B).
[0075] Figure 10A is a graph showing the vibration of the above device without the damper, as demonstrated by this technology. The horizontal axis represents the number of readings of the load cell / sensor. 100 means 100 readings, which corresponds to approximately 15 pulse readings per second. The vertical axis represents the force in grams-force (gf). Each spike represents the forward thrust of the piston, as explained in Figures 7A to 7D. The dashed vertical line labeled "57" indicates where 57gf is located relative to the thrust of each piston.
[0076] As shown in Figure 10A, the average force was 57 gf in the absence of the damper. Furthermore, the device 1000 was applying force to the load cell even when the piston was not actively thrusting forward.
[0077] Figure 10B is a graph showing the reduced vibration of the above device when using the damper described above, based on this technology. The horizontal axis represents the number of readings of the load cell / sensor. 100 means 100 readings, which corresponds to approximately 15 pulse readings per second. The vertical axis represents the force in grams-force (gf). Each spike represents the forward thrust of the piston, as explained in Figures 7A to 7D. The dashed vertical line labeled "15" indicates where 15gf is located relative to the thrust of each piston.
[0078] As shown in Figure 10B, when the damper was installed in the device, the force (or vibration) of the device was significantly reduced. The average force of the device with the damper was only 15 gf. In addition, when the piston was not moving forward, the overall vibration or force of the device was also reduced.
[0079] Figure 11 shows an exemplary method of spraying and ejecting cosmetics for transdermal delivery using this technology.
[0080] In block 1100, the tank is filled with cosmetic. In some embodiments, the cosmetic is a liquid. In some embodiments, the cosmetic is a cosmetic composition. In some embodiments, the cosmetic is a liquid lotion.
[0081] In block 1110, the piston is displaced inside the cylinder. The direction of this displacement is in the direction that increases the volume of the air intake space inside the cylinder.
[0082] In block 1120, the elastic member is deformed in response to the displacement of the piston. In some embodiments, the elastic member stores elastic energy when it is deformed. In some embodiments, the elastic member is a spring. In such embodiments, the spring is compressed in response to the displacement of the piston.
[0083] In block 1130, the elastic energy stored in the elastic member is released. In some embodiments, the piston lunges in response to this elastic energy. The direction of the lunge is in the direction that reduces the volume of the air intake space. When the piston lunges forward, in some embodiments, vibrations (or shock waves) are induced from the piston to the venturi tube.
[0084] In block 1140, the cosmetic is sprayed from the tank into the internal passage of the venturi tube and ejected through the outlet hole. In some embodiments, the sprayed cosmetic is applied to the user's skin or hair.
[0085] In block 1150, the vibration from the piston to the venturi tube (or nozzle) is reduced by the damper on the nozzle. This is done as described herein. As the venturi tube moves in response to the forward thrust of the piston, the damper absorbs at least a portion of the vibration. In some embodiments, this improves the user experience by minimizing discomfort when the nozzle comes into contact with the user's skin, face, or hair. In some embodiments, the vibration is reduced to a force of approximately 0 to 20 gf.
[0086] Optionally, in block 1160, the vibrations are further reduced by the silencer described herein. In some embodiments, the silencer further enhances the user experience by minimizing user discomfort.
[0087] The order of some or all of the blocks in the above method should not be considered limiting. Rather, a person skilled in the art who benefits from this disclosure will understand that some of the blocks may be performed in various orders not shown, or even in parallel.
[0088] The detailed description above, in relation to the accompanying drawings, is intended to describe various embodiments of the present disclosure. In the drawings, similar figures refer to similar elements. The above description is not intended to represent only one embodiment. Each embodiment described in the present disclosure is provided merely as an example or illustration and should not be construed as being preferable or advantageous to other embodiments. The exemplary examples provided herein are not intended to be exhaustive or to limit the disclosure to the exact forms disclosed above. Similarly, any process described herein may be interchangeable with other processes or combinations of processes in order to achieve the same or substantially similar results. In general, the embodiments disclosed herein are not limiting, and the inventors intend other embodiments within the scope of the present disclosure. These other embodiments may include structures and functionalities from several specific embodiments shown in the drawings and described in the specification.
[0089] Certain details are described in the above description. This is to provide a complete understanding of the exemplary embodiments of this disclosure. However, it will be obvious to those skilled in the art that the embodiments disclosed herein may be carried out without embodying all of the above specific details. In some cases, well-known process steps are not described in detail. This is to avoid unnecessarily obscuring various aspects of this disclosure. Furthermore, it will be understood that embodiments of this disclosure may employ any combination of the features described herein.
[0090] This application may include references to directions, such as “vertical,” “horizontal,” “front,” “back,” “left,” “right,” “up,” and “down.” The foregoing references, and other similar references in this application, are intended to help describe and understand a particular embodiment (for example, when the above embodiment is arranged for use). This disclosure is not intended to limit the present disclosure to these directions or positions.
[0091] The Application may also refer to quantities and numbers. Unless specifically stated, such quantities and numbers should not be considered limiting. Rather, they are examples of possible quantities or numbers relating to the Application. In this regard as well, the Application may use the term “plurality” to refer to quantities or numbers. In this regard, the above term “plurality” is intended to mean any number greater than 1, e.g., 2, 3, 4, 5, etc. The above terms such as “about” and “approximately” mean plus or minus 5% of the stated value. The above term “based upon” means “based at least partially upon”.
[0092] The principles, representative embodiments, and modes of operation of this disclosure have been described in the above description. However, the aspects of this disclosure that are intended to be protected should not be construed as being limited to the specific embodiments disclosed. Furthermore, the embodiments described herein should be considered illustrative rather than restrictive. It will be understood that variations and modifications may be made by others, and equivalents may be adopted. These will be done without departing from the spirit of this disclosure. Accordingly, all such variations, modifications, and equivalents are expressly intended to fall within the spirit and scope of the claimed disclosure.
Claims
1. A system for spraying and ejecting cosmetics for transdermal delivery, A tank configured to hold the aforementioned cosmetics, A nozzle fluidly connected to the tank, comprising a tip and a venturi tube, wherein the venturi tube comprises a longitudinal central axis and an internal passage extending along the longitudinal central axis, the internal passage fluidly connected to the tank via an orifice defined in the venturi tube, and the internal passage comprises a converging section, a diverging section, and a throat section located between the converging section and the diverging section, A cylinder comprising a longitudinal central axis, an end wall perpendicular to the longitudinal central axis, a peripheral wall extending from the end wall along the longitudinal central axis, and an outlet hole formed in the end wall, wherein the outlet hole is fluidly connected to the inlet of the converging portion of the venturi tube, A piston is disposed within the cylinder and configured to be displaceable within the cylinder along its longitudinal central axis, wherein the piston defines an air intake space within the cylinder, A drive unit configured to displace the piston in a direction that increases the volume of the air intake space within the cylinder, An elastic member configured to deform in accordance with the displacement of the piston and to store elastic energy inside while the piston is displaced in a direction that increases the volume of the air intake space, wherein the drive unit includes an elastic energy release mechanism that releases the elastic energy stored in the elastic member, thereby causing the piston to propel in a direction that decreases the volume of the air intake space, and causing vibration from the piston to the venturi tube, A damper positioned on the nozzle between the venturi tube and the tip, wherein the damper is configured to reduce the vibration, A silencer positioned between the damper and the tip, configured to further reduce the vibration, A system equipped with these features.
2. The system according to claim 1, The damper is selected from the group consisting of an elastic spring, sponge, air cushion, rubber cushion, bellows, air cylinder damper, and combinations thereof. system.
3. The system according to claim 1, The damper comprises an elastomer selected from the group consisting of rubber, nitrile rubber, fluororubber, silicone, thermoplastic elastomer (TPE), polyurethane, and combinations thereof. system.
4. The system according to claim 3, The elastomer has a hardness of approximately 20 to 70 Shore A. system.
5. The system according to claim 3, The elastomer has a hardness of approximately 30 to 60 Shore A. system.
6. The system according to claim 1, The aforementioned vibration is reduced to a force of approximately 0 to 20 gf. system.
7. The system according to claim 1, The piston comprises a longitudinal central axis, an end wall facing the end wall of the cylinder, and a circumferential wall extending from the end wall along the longitudinal central axis. A rack extending along the longitudinal central axis is formed on the outer surface of the peripheral wall of the piston. The drive unit includes a sector gear having teeth only within a specific angular range, which meshes with the rack of the piston to linearly drive the piston. The combination of the sector gear and the rack forms the elastic energy release mechanism. system.
8. The system according to claim 7, The drive unit further comprises a power supply and an electric motor electrically connected to the power supply and configured to directly or indirectly rotate the sector gear. system.
9. The system according to claim 1, The elastic member is a coil spring that is at least partially housed inside the piston. system.
10. The system according to claim 1, The tank is fluidly connected to the throat portion of the venturi tube. system.
11. The system according to claim 1, The aforementioned cosmetic is a cosmetic for aesthetic purposes. system.
12. A device for transdermal delivery of sprayed cosmetics, A system according to claim 1, and a housing that at least partially houses the system, Device.
13. A kit for transdermal delivery of sprayed cosmetics, The apparatus according to claim 12, and comprising a plurality of nozzles, The nozzle is the first nozzle among the plurality of nozzles, The plurality of nozzles are configured to be connectable to the device. kit.
14. The kit according to claim 13, Each of the plurality of nozzles has an outlet hole of a different size from that of the other nozzles in the plurality of nozzles. kit.
15. The kit according to claim 13, Each of the aforementioned nozzles is configured to dispense a different cosmetic product. kit.
16. The kit according to claim 13, The aforementioned multiple nozzles are disposable. kit.
17. A method of spraying and ejecting cosmetics for transdermal delivery, A step of filling a tank with the cosmetic, wherein the tank is fluidly connected to a nozzle having a tip and a venturi tube, the connection being made to an internal passage of the venturi tube via an orifice defined in the venturi tube, and the internal passage comprising a converging section, a diverging section, and a throat section located between the converging section and the diverging section, A step of displacing a piston in a cylinder in a direction that increases the volume of the air intake space within the cylinder, wherein the air intake space is defined between the piston and the end wall of the cylinder, and an outlet hole formed in the end wall of the cylinder is fluidly connected to the inlet of the converging portion of the venturi tube. The process of deforming an elastic member, which is arranged to deform in accordance with the displacement of the piston and store elastic energy inside, while the piston is displaced in a direction that increases the volume of the air intake space, The process involves releasing the elastic energy stored in the elastic member, thereby causing the piston to propel itself in a direction that reduces the volume of the air intake space, and further inducing vibration from the piston to the venturi tube. The process involves spraying the cosmetic product supplied from the tank into the internal passage of the venturi tube and ejecting it to the outside by air pushed out from the cylinder through the outlet hole in the end wall of the cylinder as the piston moves forward, A step of reducing the vibration using a damper positioned between the venturi tube and the tip of the nozzle, The steps include further reducing the vibration by using a silencer positioned between the damper and the tip of the nozzle, A method that includes this.
18. The method according to claim 17, The aforementioned vibration is reduced to a force of approximately 0 to 20 gf. method.