Handheld beauty instrument and liquid supply device

Abstract

The present invention relates to the technical field of water replenishment instruments, and discloses a liquid supply device, comprising a liquid storage mechanism and a liquid infusion mechanism, wherein the liquid storage mechanism is provided with a self-locking structure that can move up and down, and the self-locking structure covers the liquid outlet of the liquid storage mechanism; the liquid infusion mechanism comprises a solenoid valve, a temporary storage pipe, and a diversion pipe; the diversion pipe is fixedly arranged on the side wall of the temporary storage pipe and communicates with the temporary storage pipe; the solenoid valve comprises a push rod that can move up and down, the radius of the middle portion of the push rod being larger than the radius of the top portion, and in the working state, the middle portion of the push rod is tightly fitted with the inner wall of the temporary storage pipe, thereby sealing the liquid inlet of the diversion pipe. By turning the solenoid valve on and off, the push rod is controlled to move up or down, thereby opening or closing the self-locking structure, and at the same time, the liquid inlet of the diversion pipe is closed or opened, thereby controlling and limiting the overflow of liquid in the liquid storage mechanism to achieve quantitative supply.

Description

Technical Field

[0001] The present invention relates to the technical field of beauty instruments, and in particular to a handheld beauty instrument and a liquid supply device. Background Art

[0002] Handheld beauty devices process liquid through the device and spray it out in the form of atomized nano-water molecules. This allows the liquid, in this form, to quickly penetrate the pores and reach deep into the skin for absorption, achieving deep hydration and cleansing. The atomized liquid sprayed by the handheld beauty device is provided by a water tank located inside the device to store the liquid.

[0003] It is difficult to control the amount of liquid sprayed by existing handheld beauty devices, which can easily lead to over-spraying or under-spraying, reducing the user experience and resulting in a poor user experience. Summary of the Invention

[0004] The main purpose of the present invention is to provide a liquid supply device, which aims to solve the technical problem that the liquid supply device cannot achieve quantitative supply and accurate control of the liquid supply flow rate internally.

[0005] To achieve the above-mentioned object, the present invention provides a liquid supply device, which includes a liquid storage mechanism and a liquid infusion mechanism. The liquid storage mechanism is provided with a self-locking structure that can move up and down, and the self-locking structure covers the liquid outlet of the liquid storage mechanism.

[0006] The infusion mechanism includes a solenoid valve, a temporary storage pipe and a guide pipe;

[0007] The guide pipe is fixedly arranged on the side wall of the temporary storage pipe and is communicated with the temporary storage pipe;

[0008] The solenoid valve includes a push rod, which can move up and down. The radius of the middle part of the push rod is larger than the radius of the top part. When in working state, the middle part of the push rod is tightly fitted with the inner wall of the temporary storage pipe to close the liquid inlet of the guide pipe.

[0009] Optionally, the solenoid valve includes a reset elastic structure, the top of the push rod includes a top end, and the top end is configured as an I-shaped inverted hook.

[0010] Optionally, the solenoid valve includes a reset elastic structure, and the bottom radius of the push rod is larger than the middle radius of the push rod;

[0011] The push rod is movably arranged in the solenoid valve and passes through the reset elastic structure. The reset elastic structure is arranged above the bottom of the push rod and is pressed between the bottom of the push rod and the housing of the solenoid valve.

[0012] Optionally, the self-locking structure includes: a soft rubber plug, a guide rod, a guide rod fixing frame and an elastic structure;

[0013] The guide rod fixing frame is fixed in the liquid storage mechanism, and the guide rod fixing frame is provided with a through hole. The guide rod is movably arranged in the through hole and is connected to the soft rubber plug through the elastic structure. The elastic structure is pressed between the guide rod fixing frame and the soft rubber plug, and the soft rubber plug is pressed against the liquid outlet hole of the liquid storage mechanism.

[0014] Optionally, the top of the temporary storage pipe is connected to the liquid outlet of the liquid storage mechanism, the bottom of the temporary storage pipe is connected to the solenoid valve, and the push rod can move up and down in the temporary storage pipe.

[0015] Optionally, the bottom of the soft rubber plug is in the shape of a truncated cone, the radius of the upper bottom surface of the truncated cone is larger than the radius of the lower bottom surface, and the bottom of the soft rubber plug covers the liquid outlet of the liquid storage mechanism to close the liquid outlet.

[0016] Optionally, the liquid storage mechanism further includes a storage box and a cover, wherein the cover is covered on the top of the storage box, the guide rod fixing frame is fixed on the cover, and the liquid outlet is provided at the bottom of the storage box.

[0017] Optionally, a locking structure is provided at one end of the flow guide tube away from the solenoid valve.

[0018] Optionally, the infusion mechanism further comprises a mounting seat, the mounting seat is provided with a plurality of fixing holes, the bottom of the solenoid valve is provided with a plurality of fixing columns, the fixing columns are adapted to the through holes, and the fixing columns are inserted into the fixing holes;

[0019] The mounting seat is arranged at the bottom of the solenoid valve and is detachably connected to the solenoid valve.

[0020] A second object of the present invention is to provide a handheld beauty instrument comprising the liquid supply device described above.

[0021] In the technical solution provided by the present invention, the liquid supply device includes a liquid storage mechanism and a liquid infusion mechanism. The liquid storage mechanism is provided with a self-locking structure that can move up and down, and the self-locking structure covers the liquid outlet of the liquid storage mechanism; the liquid infusion mechanism includes a solenoid valve, a temporary storage pipe, and a guide pipe. The solenoid valve is used to control the liquid in the liquid storage mechanism to achieve quantitative supply; the temporary storage pipe is provided at the bottom of the self-locking structure, and the guide pipe is fixedly provided on the side wall of the temporary storage pipe and communicates with the temporary storage pipe; the solenoid valve includes a push rod that can move up and down, and the top of the push rod is provided with an I-shaped hook that is used to open the self-locking structure and guide the liquid to the liquid inlet of the guide pipe. The radius of the middle part of the push rod is larger than the radius of the top part. The temporary storage pipe serves as a temporary storage for the liquid flowing from the liquid storage mechanism to the guide pipe. When in operation, the middle part of the push rod is tightly fitted with the inner wall of the temporary storage pipe, sealing the liquid inlet of the guide pipe.

[0022] When the solenoid valve is energized, the push rod moves upward, and the top end of the push rod pushes the self-locking structure of the liquid storage mechanism, so that the self-locking structure is in an open state, thereby opening the liquid outlet of the liquid storage mechanism, and the liquid fills the liquid outlet. At the same time, the push rod closes the liquid inlet of the guide tube. At this time, the liquid flows from the liquid storage mechanism to the temporary storage pipe and is temporarily stored in the temporary storage pipe; when the solenoid valve is de-energized, the push rod moves downward, and the self-locking structure closes to seal the liquid outlet of the liquid storage mechanism and restrict the outflow of liquid. At the same time, the liquid inlet of the guide tube opens, and the liquid flows from the temporary storage pipe to the liquid inlet of the guide tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] One or more embodiments are exemplarily described by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0024] Figure 1 An exploded view of the liquid supply device of the present invention;

[0025] Figure 2 This is an exploded view of the liquid storage mechanism of the present invention;

[0026] Figure 3 Schematic diagram of the ejector rod of the solenoid valve of the present invention;

[0027] Figure 4 This is a cross-sectional view of the temporary storage pipe and the guide pipe being fixedly connected to each other according to the present invention;

[0028] Figure 5 It is a cross-sectional view of the handheld beauty instrument of the present invention.

[0029] Figure numerals: 1. liquid storage mechanism; 11. containing box; 111. liquid outlet; 12. soft rubber plug; 121. first soft rubber plug; 122. second soft rubber plug; 13. guide rod; 14. guide rod fixing frame; 15. cover; 16. elastic structure; 17. sealing ring; 2. solenoid valve; 21. push rod; 211. top; 212. middle of push rod; 213. bottom of push rod; 22. resetting elastic structure; 3. temporary storage pipeline; 4. guide tube; 41. positioning structure; 5. mounting base; 6. handheld beauty instrument. DETAILED DESCRIPTION

[0030] For ease of understanding of the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. All technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the technical field of the present invention. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0031] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] One aspect of the present invention provides a liquid supply device.

[0033] Please refer to Figure 1 、 Figure 3 and Figure 4 , Figure 1 Schematic diagram of the overall structure of the liquid supply device of the present invention; Figure 3 Schematic diagram of the ejector rod of the solenoid valve of the present invention; Figure 4 This is a cross-sectional view of the temporary storage pipe and the guide pipe fixedly connected in the present invention.

[0034] The liquid supply device includes a liquid storage mechanism 1 and an infusion mechanism. The liquid storage mechanism 1 is provided with a self-locking structure that can move up and down, and the self-locking structure covers the liquid outlet 111 of the liquid storage mechanism 1. The infusion mechanism includes a solenoid valve 2, a temporary storage pipe 3, and a guide pipe 4. The solenoid valve 2 is used to control the liquid in the liquid storage mechanism 1 to achieve quantitative supply. The temporary storage pipe 3 is arranged at the bottom of the self-locking structure. The solenoid valve 2 includes a push rod 21 that can move up and down. The top end 211 of the push rod is configured as an I-shaped hook, which is used to open the self-locking structure and guide the liquid to the liquid inlet of the guide pipe 4. In addition, the guide pipe 4 is fixedly provided on the side wall of the temporary storage pipe 3 and is connected to the temporary storage pipe 3. The radius of the middle portion 212 of the push rod is larger than the radius of the top portion. When in operation, the middle portion 212 of the push rod is tightly fitted with the inner wall of the temporary storage pipe 3, sealing the liquid inlet of the guide pipe 4.

[0035] Specifically, the liquid storage mechanism 1 is equipped with a self-locking structure that can move up and down. The self-locking structure covers the liquid outlet 111 of the liquid storage mechanism 1. The close fit between the self-locking structure and the liquid outlet 111 of the liquid storage mechanism 1 achieves self-locking. The infusion mechanism includes a solenoid valve 2, a temporary storage pipe 3, and a flow guide pipe 4. The solenoid valve 2 is turned on and off to control the liquid in the liquid storage mechanism 1 to achieve quantitative supply.

[0036] The flow guide tube 4 is fixedly mounted on the side wall of the temporary storage pipe 3 and communicates with the temporary storage pipe 3. The liquid outlet 111 of the liquid storage mechanism 1 is embedded in the upper end of the temporary storage pipe 3. The lower end of the temporary storage pipe 3 is fixedly connected to the solenoid valve 2. The push rod 21 can move up and down within the temporary storage pipe 3. When the solenoid valve 2 is in operation, the middle portion 212 of the push rod tightly contacts the inner wall of the temporary storage pipe 3, sealing the liquid inlet of the flow guide tube 4.

[0037] When the solenoid valve 2 is energized, the push rod 21 moves upward, and the I-shaped hook at the top end 211 of the push rod pushes the self-locking structure of the liquid storage mechanism 1 to move upward, so that the liquid outlet 111 of the liquid storage mechanism 1 is opened, and the liquid fills the liquid outlet 111. At the same time, the middle part 212 of the push rod fits tightly with the inside of the temporary storage pipe 3, closing the liquid inlet of the guide pipe 4. At this time, the liquid flows from the liquid storage mechanism 1 to the liquid outlet 111; when the solenoid valve 2 is de-energized, the push rod 21 moves downward, and the I-shaped hook at the top end 211 of the push rod is used to pull the liquid from the liquid storage mechanism 1 to the liquid inlet of the guide pipe 4. The self-locking structure closes to seal the liquid outlet 111 of the liquid storage mechanism 1 and restrict the outflow of liquid. At the same time, the liquid inlet of the guide pipe 4 is opened, and the liquid flows from the temporary storage pipe 3 to the liquid inlet of the guide pipe 4. The top of the push rod includes a top end 211, and the top end 211 is configured as an I-shaped inverted hook, that is, the top end 211 of the push rod is configured as an I-shaped inverted hook.

[0038] In this embodiment, please refer to Figure 2 , which is an exploded view of the liquid storage mechanism 1 of the present invention.

[0039] The liquid storage mechanism 1 includes: a storage box 11, a soft rubber plug 12, a guide rod 13, a guide rod fixing frame 14, a cover 15, and an elastic structure 16. The guide rod fixing frame 14 is used to fix the guide rod 13. The guide rod fixing frame 14 is provided with a through hole. The guide rod 13 is movably arranged in the through hole and passes through the elastic structure 16 to connect with the soft rubber plug 12. The elastic structure 16 is pressed between the guide rod fixing frame 14 and the soft rubber plug 12. The soft rubber plug 12 is pressed against the liquid outlet 111 of the liquid storage mechanism 1. The bottom of the storage box 11 is provided with a liquid outlet 111, and the position of the liquid outlet 111 corresponds to the position of the soft rubber plug 12. In the initial state, the soft rubber plug 12 covers the liquid outlet 111, sealing the liquid outlet 111. When the electromagnetic valve 2 is powered off, the elastic force of the elastic structure 16 tightly fits the bottom of the soft rubber plug 12 against the liquid outlet 111, so that the liquid storage mechanism 1 can be self-locked, thereby preventing leakage of the liquid stored in the container 11. The elastic structure 16 can be a spring.

[0040] The self-locking structure includes: a soft rubber plug 12 , a guide rod 13 , a guide rod fixing frame 14 and an elastic structure 16 ; the guide rod fixing frame 14 is fixed in the liquid storage mechanism 1 .

[0041] In addition, the soft rubber plug 12 includes a first soft rubber plug 121 and a second soft rubber plug 122. The first soft rubber plug 121 is completely embedded in the second soft rubber plug 122, wherein the upper portion of the first soft rubber plug 121 is circular, and the lower portion is truncated cone-shaped, and the radius of the upper bottom surface of the truncated cone is larger than the radius of the lower bottom surface; similarly, the upper portion of the second soft rubber plug 122 is circular, and the lower portion is truncated cone-shaped, and the radius of the upper bottom surface of the truncated cone is larger than the radius of the lower bottom surface. The first soft rubber plug 121 is tightly embedded in the second soft rubber plug 122. Since the bottom of the second soft rubber plug 122 is truncated cone-shaped, the second soft rubber plug 122 can be more tightly fitted with the liquid outlet 111, and the leak-proof effect is better, thereby making the self-locking structure of the liquid storage mechanism 1 more effective. Among them, the first soft rubber plug 121 is connected to the guide rod 13, and the bottom of the guide rod 13 is completely embedded in the bottom of the first soft rubber plug 121.

[0042] In addition, a limiting structure is provided at the bottom of the cover 15, and a locking structure 41 is provided at the guide rod fixing frame 14;

[0043] Alternatively, a locking structure 41 is provided at the bottom of the cover 15, and a limiting structure is provided at the guide rod fixing frame 14.

[0044] Among them, protrusion structures are respectively provided on both sides of the limiting structure, and groove structures adapted to the protrusion structures are respectively provided on both sides of the locking structure 41.

[0045] The implementation of providing a limiting structure at the bottom of the cover 15 and fixing the guide rod with a locking structure 41 is specifically described in this embodiment.

[0046] Specifically, the guide rod holder 14 is provided with a through-hole, and the guide rod 13 is movably disposed within the through-hole and connected to the soft rubber plug 12 through the elastic structure 16. The elastic structure 16 is compressed between the guide rod holder 14 and the soft rubber plug 12. That is, the radius of the through-hole is smaller than the radius of the top of the guide rod 13, but larger than the radius of the guide rod 13. The guide rod holder 14 is tightly engaged with the protrusion of the retaining structure via the groove structure on both sides of the locking structure 41, thereby allowing the top of the guide rod 13 to move up and down between the lid 15 and the guide rod holder 14. Furthermore, because the bottom of the guide rod 13 is embedded in the soft rubber plug 12, the guide rod 13 can move up and down between the bottom of the lid 15 and the soft rubber plug 12. In addition, the bottom surface of the storage box 11 is recessed toward the liquid outlet 111. The liquid storage mechanism 1 further includes a sealing ring 17 , which is disposed at the connection between the lid 15 and the storage box 11 . The sealing ring 17 allows the lid 15 to fit more closely with the storage box 11 , thereby further preventing leakage of liquid inside the storage box 11 .

[0047] When the solenoid valve 2 is energized, the push rod 21 moves upward, and the I-shaped hook at the top end 211 of the push rod pushes the self-locking structure of the liquid storage mechanism 1 upward. At this time, the soft rubber plug 12 moves upward, thereby causing the guide rod 13 to move upward, and the liquid stored in the storage box 11 flows out to the liquid outlet 111. The bottom surface of the storage box 11 is concavely arranged so that the liquid outlet 111 is conducive to the liquid flowing out of the box body to the liquid outlet 111 more smoothly and quickly, which can further improve the working efficiency of the liquid storage mechanism 1. When the solenoid valve 2 is powered off, the push rod 21 moves downward, and the I-shaped hook at the top 211 of the push rod is used to pull the liquid from the liquid storage mechanism 1 to the liquid inlet of the guide tube 4, which can further improve the working efficiency of the infusion device. At this time, the elastic force of the elastic structure 16 covers the soft rubber plug 12 on the liquid outlet hole 111, closing the liquid outlet hole 111, thereby sealing the liquid outlet hole 111 of the liquid storage mechanism 1 and restricting the outflow of liquid. At the same time, the liquid inlet of the guide tube 4 is opened, and the liquid flows from the liquid outlet hole 111 to the temporary storage pipe 3, and then flows to the liquid inlet of the guide tube 4.

[0048] Furthermore, in this embodiment, the solenoid valve 2 includes a resilient return structure 22. The ejector pin 21 is movably disposed within the solenoid valve 2 and passes through the resilient return structure 22. The radius of the bottom portion 213 of the ejector pin is greater than the radius of the middle portion 212 of the ejector pin. The resilient return structure 22 is disposed above the bottom portion 213 of the ejector pin and is compressed between the bottom portion 213 of the ejector pin and the housing of the solenoid valve 2.

[0049] Specifically, when the solenoid valve 2 is energized, the push rod 21 moves upward, and the I-shaped hook at the top 211 of the push rod pushes the bottom of the second soft rubber plug 122, pushing the guide rod 13 upward, thereby opening the self-locking structure of the liquid storage mechanism 1. At this time, the middle part 212 of the push rod completely blocks the liquid inlet of the guide tube 4, closing the liquid inlet of the guide tube 4, wherein the temporary storage pipe 3 serves as a temporary storage for the liquid flowing from the liquid outlet 111 of the liquid storage mechanism 1 to the guide tube 4. When the solenoid valve 2 is de-energized, the push rod 21 moves downward under the rebound force of the reset elastic structure 22 inside the solenoid valve 2, and the I-shaped hook at the top 211 of the push rod is used to pull the liquid from the liquid storage mechanism 1 to the liquid inlet of the guide tube 4. At this time, the soft rubber plug 12 moves downward under the rebound force of the elastic structure 16 to achieve a sealed closure of the liquid outlet 111, thereby limiting liquid overflow. At the same time, the push rod 21 moves downward under the action of the rebound force of the reset elastic structure 22 in the solenoid valve 2, and the middle part 212 of the push rod also moves downward. The liquid inlet of the guide tube 4 opens, and the liquid at the liquid outlet 111 enters the temporary storage pipe 3 and then enters the guide tube 4 through the temporary storage pipe 3. Therefore, by controlling the power on and off of the solenoid valve 2, a quantitative supply of liquid can be achieved.

[0050] In addition, the radius of the bottom portion 213 of the push rod is larger than the radius of the middle portion 212 of the push rod, and the reset elastic structure 22 is provided above the bottom portion 213 of the push rod and is compressed between the bottom portion 213 of the push rod and the housing of the solenoid valve 2. The reset elastic structure 22 can be a spring.

[0051] Furthermore, in this embodiment, the guide pipe 4 is arranged on the side wall of the temporary storage pipe 3 and is connected to the temporary storage pipe 3; the top of the temporary storage pipe 3 is connected to the liquid outlet 111 of the liquid storage mechanism 1, the liquid outlet 111 is embedded in the temporary storage pipe 3, and the bottom of the temporary storage pipe 3 is connected to the solenoid valve 2. When the solenoid valve 2 is working, the middle part 212 of the push rod is tightly fitted with the inner wall of the temporary storage pipe 3. At this time, the liquid inlet of the guide pipe 4 is closed.

[0052] Specifically, the guide tube 4 is arranged on the side wall of the temporary storage pipe 3 and is inclined downward. The liquid inlet of the guide tube 4 is connected to the temporary storage pipe 3, the top of the temporary storage pipe 3 is connected to the liquid outlet 111 of the liquid storage mechanism 1, and the bottom of the temporary storage pipe 3 is connected to the solenoid valve 2.

[0053] When the solenoid valve 2 is energized, the push rod 21 moves upward, and the I-shaped hook at the top end 211 of the push rod pushes the soft rubber plug 12 upward, thereby opening the self-locking structure of the liquid storage mechanism 1. At this time, the liquid flows from the liquid storage mechanism 1 to the liquid outlet 111, and the middle part 212 of the push rod fits tightly against the inner wall of the temporary storage pipe 3. At this time, the liquid inlet of the guide tube 4 is closed. The liquid in the liquid outlet 111 can only flow in but not out; when the solenoid valve 2 is powered off, the rebound force of the reset elastic structure 22 causes the push rod 21 to move downward, and the I-shaped hook at the top end 211 of the push rod pulls the liquid out of the liquid storage mechanism 1 to the liquid inlet of the guide tube 4. At this time, the rebound force of the elastic structure 16 causes the guide rod 13 to move downward, and then the soft rubber plug 12 to move downward, so that the soft rubber plug 12 covers the liquid outlet 111, closing the liquid outlet 111 for self-locking. At the same time, the push rod 21 moves downward, and the middle part 212 of the push rod no longer blocks the liquid inlet of the guide tube 4. The liquid flows from the liquid outlet 111 to the temporary storage pipe 3, and then flows into the guide pipe 4. The liquid in the temporary storage pipe 3 can only flow out but not enter.

[0054] Furthermore, in this embodiment, a chamfer is provided at the connection of the temporary storage pipe 3 near the bottom of the liquid outlet 111 , that is, a chamfer is provided at the liquid inlet of the temporary storage pipe 3 , and a locking structure 41 is provided at the end of the guide pipe 4 away from the solenoid valve 2 .

[0055] Specifically, the liquid inlet of the temporary storage pipe 3 is provided with a chamfer. When the solenoid valve 2 is powered off, the rebound force of the reset elastic structure 22 causes the push rod 21 to move downward, and the I-shaped hook at the top 211 of the push rod pulls the liquid from the liquid storage mechanism 1 to the liquid inlet of the guide tube 4. At this time, the rebound force of the elastic structure 16 of the liquid storage mechanism 1 causes the guide rod 13 to move downward, and then causes the soft rubber plug 12 to move downward, thereby closing the soft rubber cover on the liquid outlet hole 111, and self-locking the liquid outlet hole 111. The liquid in the liquid outlet hole 111 can only flow out but not in. The liquid flows from the liquid outlet hole 111 to the temporary storage pipe 3, and flows to the liquid inlet of the guide tube 4 through the temporary storage pipe 3. The liquid inlet of the temporary storage pipe 3 is provided with a chamfer, so that the liquid can flow from the liquid outlet hole 111 to the guide tube 4 more smoothly, thereby improving the efficiency of the infusion mechanism. Furthermore, a locking structure 41 is provided at one end of the flow guide tube 4 away from the solenoid valve 2. The locking structure 41 may be a protruding structure for fixing the flow guide tube 4 so that the flow guide tube 4 is tilted at a certain fixed angle, thereby being more conducive to the flow of liquid.

[0056] Furthermore, in this embodiment, the infusion mechanism also includes a mounting base 5, which is provided with multiple fixing holes, and a plurality of fixing columns are provided at the bottom of the solenoid valve 2. The fixing columns are adapted to the fixing holes, and the fixing columns are inserted into the fixing holes. The mounting base 5 is arranged at the bottom of the solenoid valve 2 and is detachably connected to the solenoid valve 2.

[0057] Specifically, a mounting base 5 is provided at the bottom of the solenoid valve 2. The mounting base 5 has multiple fixing holes for fixing the solenoid valve 2. The bottom of the solenoid valve 2 has multiple fixing posts. The fixing posts at the bottom of the solenoid valve 2 are inserted into the fixing holes on the mounting base 5 to fix the solenoid valve 2. The mounting base 5 is detachably connected to the solenoid valve 2.

[0058] Another aspect of the present invention provides a handheld beauty instrument 6, comprising at least one liquid supply device such as the one described above.

[0059] Please refer to Figure 5 , which is a cross-sectional view of the handheld beauty instrument 6 of the present invention.

[0060] The handheld beauty instrument 6 includes a liquid supply device. Specifically, the liquid supply device includes a liquid storage mechanism 1 and an infusion mechanism. The liquid storage mechanism 1 is provided with a self-locking structure that can move up and down. The self-locking structure includes a soft rubber plug 12, a guide rod 13, a guide rod fixing frame 14 and an elastic structure 16. The guide rod fixing frame 14 is used to fix the guide rod 13. The guide rod fixing frame 14 is provided with a through hole. The guide rod 13 is movably arranged in the through hole and passes through the elastic structure 16 to be connected to the soft rubber plug 12. The elastic structure 16 is pressed between the guide rod fixing frame 14 and the soft rubber plug 12. The infusion mechanism includes a solenoid valve 2, a temporary storage pipe 3 and a diversion pipe 4. The solenoid valve 2 includes a push rod 21. The top end 211 of the push rod is set as an I-shaped hook, which can move up and down and is used to open the self-locking structure. The solenoid valve 2 is used to control whether the liquid in the liquid storage mechanism 1 is quantitatively output, thereby realizing quantitative supply of the liquid in the handheld beauty instrument 6.

[0061] The liquid inlet of the temporary storage pipe 3 is connected to the liquid outlet 111 of the liquid storage mechanism 1 . The liquid outlet 111 of the liquid storage mechanism 1 is embedded in the temporary storage pipe 3 and fixedly connected to the upper end of the temporary storage pipe 3 .

[0062] In the initial state, that is, when the solenoid valve 2 is not energized, the soft rubber plug 12 covers the liquid outlet hole 111 and fits tightly with the liquid outlet hole 111, thereby achieving self-locking.

[0063] When the electromagnetic is energized, the push rod 21 moves upward, the soft rubber plug 12 moves upward, the liquid outlet 111 of the liquid storage mechanism 1 opens, and the liquid flows from the liquid storage mechanism 1 to the liquid outlet 111. At this time, the middle part 212 of the push rod fits tightly against the inner wall of the temporary storage pipe 3, closing the liquid inlet of the guide tube 4. That is, the liquid inlet of the guide tube 4 is completely sealed by the middle part 212 of the push rod, and the liquid in the liquid outlet 111 can only flow in but not out.

[0064] When the solenoid valve 2 is powered off, the push rod 21 moves downward, and the soft rubber plug 12 moves downward under the action of the rebound force of the elastic structure 16, so that it fits tightly with the liquid outlet 111 again, thereby making the liquid storage mechanism 1 self-locking, limiting the overflow of the liquid in the liquid storage mechanism 1, and the middle part 212 of the push rod no longer blocks the liquid inlet of the guide tube 4. At this time, the liquid in the liquid outlet 111 can only flow out but not enter. The liquid flows from the liquid outlet 111 to the temporary storage pipe 3, and flows into the guide tube 4 through the temporary storage pipe 3, thereby realizing the quantitative supply of the liquid, and then realizing the quantitative supply of the liquid from the liquid storage mechanism 1 to the handheld beauty instrument 6 for use.

[0065] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above. For the sake of simplicity, they are not provided in detail. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field should understand that it is still possible to modify the technical solutions described in the above embodiments, or to make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A liquid supply device, characterized in that: The liquid supply device includes a liquid storage mechanism and a liquid infusion mechanism. The liquid storage mechanism is provided with a self-locking structure that can move up and down, and the self-locking structure covers the liquid outlet of the liquid storage mechanism. The infusion mechanism includes a solenoid valve, a temporary storage pipe and a guide pipe; The guide pipe is fixedly arranged on the side wall of the temporary storage pipe and is communicated with the temporary storage pipe; The solenoid valve includes a push rod that can move up and down. The radius of the middle portion of the push rod is larger than the radius of the top portion. When in operation, the middle portion of the push rod is tightly fitted against the inner wall of the temporary storage pipe to seal the liquid inlet of the guide pipe. The top of the mandrel includes a top end, and the top end is configured as an I-shaped inverted hook; The solenoid valve includes a reset elastic structure, and the bottom radius of the push rod is larger than the middle radius of the push rod; The push rod is movably arranged in the solenoid valve and passes through the reset elastic structure. The reset elastic structure is arranged above the bottom of the push rod and is pressed between the bottom of the push rod and the housing of the solenoid valve. The self-locking structure includes: a soft rubber plug, a guide rod, a guide rod fixing frame and an elastic structure; The guide rod fixing frame is fixed in the liquid storage mechanism, and the guide rod fixing frame is provided with a through hole. The guide rod is movably arranged in the through hole and passes through the elastic structure to be connected with the soft rubber plug. The elastic structure is pressed between the guide rod fixing frame and the soft rubber plug, and the soft rubber plug is pressed against the liquid outlet hole of the liquid storage mechanism. The top of the temporary storage pipe is connected to the liquid outlet of the liquid storage mechanism, the bottom of the temporary storage pipe is connected to the solenoid valve, and the push rod can move up and down in the temporary storage pipe; The bottom of the soft rubber plug is in the shape of a truncated cone, the radius of the upper bottom surface of the truncated cone is larger than the radius of the lower bottom surface, and the bottom of the soft rubber plug covers the liquid outlet of the liquid storage mechanism to close the liquid outlet.

2. The liquid supply device according to claim 1, characterized in that The liquid storage mechanism further comprises a storage box and a cover, wherein the cover is covered on the top of the storage box, the guide rod fixing frame is fixed on the cover, and the liquid outlet is arranged at the bottom of the storage box.

3. The liquid supply device according to claim 1, wherein: A locking structure is provided at one end of the flow guide tube away from the solenoid valve.

4. The liquid supply device according to claim 1, wherein The infusion mechanism further includes a mounting base, the mounting base is provided with a plurality of fixing holes, the bottom of the solenoid valve is provided with a plurality of fixing columns, the fixing columns are adapted to the through holes, and the fixing columns are inserted into the fixing holes; The mounting seat is arranged at the bottom of the solenoid valve and is detachably connected to the solenoid valve.

5. A handheld beauty instrument, characterized in that: The invention comprises the liquid supply device according to any one of claims 1 to 4.

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