A clog-resistant liquid applicator and beauty device

Abstract

This utility model relates to the technical field of beauty instruments, and in particular to an anti-clogging liquid application head and a beauty instrument. The key points of its technical solution are: it is used for liquid application under negative pressure conditions, including a base, the base having a front end face and a liquid outlet channel; the front end face has a stepped portion and a recessed portion, the stepped portion surrounding the recessed portion; the base has a first liquid outlet hole located in the stepped portion and / or the recessed portion; the stepped portion has a first venting groove connected to the first liquid outlet hole; the first venting groove has a through opening on the outer side wall of the base; the recessed portion has a microneedle that avoids the first liquid outlet hole. This application's technical solution has an anti-clogging function, thereby solving the problem of unstable essence output.

Description

Technical Field

[0001] This utility model relates to the technical field of beauty instruments, and in particular to an anti-clogging liquid application head and a beauty instrument. Background Technology

[0002] Microneedling devices are intelligent beauty tools that integrate cutting-edge technology with professional skincare concepts. They are designed specifically for modern people who seek efficient and convenient skincare experiences. Utilizing nanoscale microneedle technology, they create channels in the stratum corneum of the skin, precisely opening the skin's absorption channels and promoting the absorption of nutrients. This, in turn, promotes the regeneration of collagen and elastin fibers, achieving a skin-renewing effect. Microneedling devices still have good prospects for promotion and application in the future.

[0003] Currently, microneedling devices primarily apply serums via an applicator. With technological advancements, the functions of these devices are constantly being enriched. Some devices also incorporate negative pressure suction. Specifically, these devices first draw the serum from the skin using negative pressure suction, and then apply it to the skin through the applicator. During this process, the application motion is less prone to shifting, allowing for precise delivery of the serum to deeper layers of the skin for a superior skincare experience.

[0004] However, the current application head still has many shortcomings. For example, during the application process, the application head is easily blocked by the skin due to negative pressure, resulting in unstable liquid output, which reduces the user experience. Therefore, the existing technology needs to be improved.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0006] This invention provides an anti-clogging applicator and a beauty device to solve the problem of unstable serum output in the prior art.

[0007] To achieve the above objectives, firstly, this utility model provides an anti-clogging liquid application head with the following technical solution:

[0008] A clog-resistant liquid applicator for applying liquid under negative pressure includes a base with a front end face and a liquid outlet channel. The front end face has a stepped portion and a recessed portion. The stepped portion surrounds the recessed portion. A first liquid outlet hole is provided on the base, located in the stepped portion and / or the recessed portion. A first venting groove is provided on the stepped portion, communicating with the first liquid outlet hole. The first venting groove has a through opening on the outer side wall of the base. A microneedle is provided in the recessed portion, avoiding the first liquid outlet hole.

[0009] Preferably, the first liquid outlet includes a first stepped section and a second stepped section that are interconnected. The first stepped section is close to the front end face, and the second stepped section is connected to the liquid outlet channel. The diameter of the first stepped section is larger than that of the second stepped section.

[0010] Preferably, the depth of the first ventilation groove is less than or equal to the height of the step portion.

[0011] Preferably, the first ventilation groove is located in the edge and / or corner area of ​​the base.

[0012] Preferably, when the first liquid outlet is located in the stepped portion, the stepped portion is further provided with a second venting groove, which is connected to the first liquid outlet and the recessed portion respectively.

[0013] Preferably, it also includes an adsorption sleeve, which is sleeved on the outside of the base, and a negative pressure cavity is formed between the adsorption sleeve and the base.

[0014] Preferably, the first liquid outlet and the first vent groove are configured as multiple sets, and the multiple sets of the first liquid outlet and the first vent groove are arranged at intervals along the outer periphery of the base.

[0015] Preferably, the base is further provided with a second liquid outlet, which is located in the recessed portion, and the microneedle avoids the second liquid outlet.

[0016] Preferably, the base includes a microneedle wafer, and the microneedles are microneedles on the microneedle wafer.

[0017] Secondly, this utility model provides a beauty device with the following technical solution:

[0018] A beauty device includes the aforementioned anti-clogging liquid application head, and also includes a beauty device body, wherein the anti-clogging liquid application head is disposed on the beauty device body.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The anti-clogging application head and beauty device provided by this utility model allow the essence to flow out through the first outlet hole. When the user's skin blocks the first outlet hole, under negative pressure, the essence can also flow out through the first ventilation groove to the outer wall of the base, so that the essence can be continuously applied to the skin, ensuring that the application head can have a stable liquid output, realizing the anti-clogging function, and optimizing and improving the user experience.

[0021] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the anti-clogging liquid application head provided in an embodiment of the present invention;

[0024] Figure 2 This is a structural schematic diagram of the anti-clogging liquid application head provided in another embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the first anti-clogging liquid application head provided in this embodiment of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the second type of anti-clogging liquid application head provided in this embodiment of the utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the third type of anti-clogging liquid application head provided in this embodiment of the utility model;

[0028] Figure 6 This is a cross-sectional view of the first ventilation groove provided in this embodiment of the present invention when the depth is equal to the height of the step.

[0029] Figure 7 This is a cross-sectional view of the adsorption sleeve when the depth of the first ventilation groove is less than the height of the step portion, as provided in this embodiment of the utility model.

[0030] Figure 8 This is a schematic diagram of the structure of the beauty device provided in this embodiment of the utility model;

[0031] Figure 9 This is a cross-sectional view of the beauty device provided in this embodiment of the utility model.

[0032] Figure label:

[0033] 1001. Beauty device body; 1002. Negative pressure mechanism; 1003. Liquid storage chamber; 1004. Vibration mechanism; 1005. Liquid outlet channel;

[0034] 1. Base; 101. Stepped section; 102. Recessed section;

[0035] 2. First liquid outlet; 21. First stepped section; 22. Second stepped section;

[0036] 3. First venting groove; 4. Second venting groove; 5. Adsorption sleeve; 6. Negative pressure chamber; 7. Second liquid outlet; 8. Microneedle wafer; 9. Sealing ring. Detailed Implementation

[0037] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0038] In the description of this utility model, it should be understood that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component that is centrally positioned therein. When a component is considered to be "set" on another component, it can be directly set on the other component or there may be a component that is centrally positioned therein.

[0039] Furthermore, terms such as "long," "short," "inner," and "outer" indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not indicate or imply that the device or component referred to must have this specific orientation or operate in a specific orientational configuration. Therefore, they should not be construed as limitations of this utility model.

[0040] The following is in conjunction with the appendix Figure 1-9 The technical solution of this utility model will be further illustrated through specific implementation methods.

[0041] Please refer to Figure 1 This utility model embodiment provides an anti-clogging application head for applying liquid under negative pressure conditions. It is understood that the anti-clogging application head is usually located at one end of a beauty device. Some beauty devices have a negative pressure adsorption function to adsorb and position the skin, thereby improving the accuracy of serum application. Correspondingly, one end of such beauty devices has a negative pressure cavity 6 (not shown in the figure). A negative pressure area is formed through the negative pressure cavity 6, thereby adsorbing the skin. At this time, at least the end of the application head that contacts the skin is located in the negative pressure cavity 6, thereby enabling the serum application function to be realized under negative pressure conditions.

[0042] Specifically, the anti-clogging application head mainly includes a base 1. In this embodiment, the base 1 is roughly cylindrical in shape and is mounted on the beauty device. One end of the base 1 extends to the outside of the beauty device for contact with the skin and to apply the essence at the same time. Here, the end of the base 1 used for applying the essence is defined as the front end face.

[0043] At the same time, refer to Figure 1 and Figure 2 In order to achieve the application of the essence, the base 1 also has a liquid outlet channel 1005 (not shown in the figure), and the base 1 also has a first liquid outlet hole 2. The liquid outlet channel 1005 is located inside the base 1, while the first liquid outlet hole 2 is located on the front end face of the base 1. One end of the liquid outlet channel 1005 is connected to the first liquid outlet hole 2. The liquid outlet channel 1005 can guide the essence from the beauty device to the first liquid outlet hole 2, and the essence is dispensed through the first liquid outlet hole 2.

[0044] During the above-mentioned liquid dispensing process, some users have soft skin, which may block the first liquid outlet 2 when the skin is adsorbed and contacts the front end of the base 1, thus causing some obstacles to the liquid dispensing action and resulting in uneven liquid dispensing.

[0045] Therefore, to overcome the problem of uneven liquid output, the front end face has a stepped portion 101 and a recessed portion 102, with the stepped portion 101 surrounding the recessed portion 102. At this time, the stepped portion 101 and the recessed portion 102 form a staggered stepped profile at the front end face. On the one hand, the stepped portion 101 can provide some support, preventing the skin from completely adhering to the entire front end face and reducing the possibility of skin clogging the first liquid outlet 2; on the other hand, the recessed portion 102 can also retain the essence, preventing the essence from being completely unable to be applied to the skin due to the first liquid outlet 2 being blocked.

[0046] In the embodiments provided in this application, the stepped portion 101 is located at the edge of the recessed portion 102 and extends in a closed loop along the periphery of the front end face, so that a recessed portion 102 with closed sides can be formed in the middle area of ​​the front end face, thereby optimizing and improving the retention effect of the essence.

[0047] Meanwhile, the first liquid outlet 2 is located in the stepped portion 101 and / or the recessed portion 102.

[0048] The specific configuration of the first liquid outlet 2 includes at least the following three scenarios:

[0049] Reference Figure 3In the first setting, the first liquid outlet 2 is disposed through the covered position of the step portion 101 and is surrounded by the step portion 101. At this time, the essence can achieve the edge liquid outlet effect at the step portion 101. Under the edge liquid outlet condition, the liquid outlet range of the essence can be effectively increased, and the possibility of being blocked by the skin can be reduced.

[0050] Reference Figure 4 In the second configuration, the first liquid outlet 2 is disposed through the recess 102 and surrounded by the recess 102. In this case, the essence can be dispensed at the recess 102, which helps to retain the essence in the recess 102.

[0051] Reference Figure 5 In the third configuration, the first liquid outlet 2 is disposed at the junction of the stepped portion 101 and the recessed portion 102, and is surrounded by the stepped portion 101 and the recessed portion 102 respectively. At this time, the essence can be dispensed at the junction of the recessed portion 102 and the stepped portion 101. The essence can be dispensed close to the edge of the base 1, increasing the dispensing range, and some essence can also be retained in the recessed portion 102.

[0052] It is understood that regardless of where the first liquid outlet 2 is located, as long as liquid can be discharged at the front end face, it should be included in the scope of this application. In this embodiment, referring to... Figure 2 The first liquid outlet 2 is provided on the stepped portion 101 as an example.

[0053] At the same time, refer to Figure 2 and Figure 3 The stepped portion 101 is also provided with a first ventilation groove 3. In this embodiment, the first ventilation groove 3 is recessed from the outside to the inside of the stepped portion 101, and the first ventilation groove 3 has a long straight groove outline. On this basis, one end of the first ventilation groove 3 is connected to the first liquid outlet 2, and the other end of the first ventilation groove 3 has a through opening on the outer side wall of the base 1. In other embodiments, the first ventilation groove 3 can also be a through groove that penetrates the inner and outer side walls of the stepped portion 101. That is, the first ventilation groove 3 only breaks the inner and outer side walls of the stepped portion 101 to connect the recessed portion 102 and the outside of the base 1, without damaging the surface of the stepped portion 101 that contacts the skin.

[0054] By adopting the above-mentioned setup, when the first liquid outlet 2 is blocked, since the liquid application head is located in the negative pressure cavity 6, the end of the first ventilation groove 3 near the outer wall of the base 1 will be in the negative pressure area. It can still connect the external negative pressure environment and the liquid outlet channel 1005 through the first ventilation groove 3. Under the suction effect of negative pressure, the essence can be continuously pumped to the first liquid outlet 2 of the base 1, thereby achieving continuous liquid output and improving the user experience.

[0055] Furthermore, the recessed portion 102 is further provided with microneedles that avoid the first liquid outlet 2. The microneedles can stimulate the stratum corneum of the skin to form microchannels. Under the condition that the essence can be stably dispensed, the skin care effect is optimized and improved.

[0056] The anti-clogging applicator provided in this embodiment has two advantages. First, the recessed portion 102 can retain some essence, while the stepped portion 101 can provide raised support for the skin to prevent the skin from completely covering the front end and reduce the possibility of the first outlet hole 2 being completely blocked. Second, the first venting groove 3, which is connected to the first outlet hole 2, can draw the essence from the outlet channel 1005 to the first outlet hole 2 under negative pressure to prevent the first outlet hole 2 from being unable to dispense liquid when it is completely blocked. Thus, the overall liquid dispensing volume of the anti-clogging applicator is more stable.

[0057] Furthermore, referring to Figure 6 The first liquid outlet 2 includes a first stepped section 21 and a second stepped section 22 that are connected to each other. The first stepped section 21 is close to the front end face, and the second stepped section 22 is connected to the liquid outlet channel 1005. The diameter of the first stepped section 21 is larger than that of the second stepped section 22.

[0058] Based on the above configuration, the essence first flows from the liquid outlet channel 1005 into the second step 22, then flows further into the first step 21, and finally is applied to the user's skin through the first step 21. During this process, since the first step 21 has a larger capacity, it can expand the liquid outlet area of ​​the first liquid outlet 2 and reduce the possibility of the first liquid outlet 2 being completely blocked. On the other hand, it can also allow some essence to remain in the first step 21, further increasing the overall liquid output of the structure.

[0059] Optionally, the specific opening contours of the first step segment 21 and the second step segment 22 can be circular, polygonal, or other irregular contours. In this embodiment, a circular opening contour is used as an example. The specific opening shapes of the first step segment 21 and the second step segment 22 can be adjusted according to actual needs, and no specific restrictions are imposed here.

[0060] Furthermore, the depth of the first venting groove 3 is less than or equal to the height of the step portion 101. It should be explained that a reference axis perpendicular to the front end face is selected here and defined as O. The depth direction of the first venting groove 3 can be understood as being consistent with the direction of this reference axis O.

[0061] Based on the above settings, such as Figure 6When the depth of the first ventilation groove 3 is equal to the height of the step portion 101, the first ventilation groove 3 has a large cross-sectional area, so that when the first liquid outlet hole 2 is completely blocked, there is enough suction to smoothly draw the essence out from the liquid outlet channel 1005.

[0062] like Figure 7 When the depth of the first venting groove 3 is less than the height of the step portion 101, a stepped structure with varying heights is formed between the first venting groove 3 and the first liquid outlet 2 along the reference axis. This structure can retain some of the essence. Therefore, while the essence flows out of the first venting groove 3, a portion of the essence can still remain in the first step section 21, and the first liquid outlet 2 can maintain a certain output volume. In addition, when the first liquid outlet 2 is completely blocked, the possibility of the essence flowing out of the base 1 from the first venting groove 3 and being sucked into the gas channel (not shown) can be reduced.

[0063] It should be explained that the specific depth of the first ventilation groove 3 can be adjusted according to actual needs. In another embodiment, the depth of the first ventilation groove 3 can also be greater than the overall height of the step portion 101. However, this setting may cause most of the essence to flow out from the first ventilation groove 3, resulting in a reduction in the amount of liquid output from the front end. Therefore, when the depth of the first ventilation groove 3 is less than or equal to the height of the step portion 101, the liquid output effect is better.

[0064] Furthermore, the first venting groove 3 is located in the edge and / or corner area of ​​the base 1. It can be understood that the edge here refers to the area with a flat side on the front face, while the corner is the boundary area between two edges. The above-mentioned arrangement includes the following three specific configuration forms:

[0065] In the first configuration, the first ventilation groove 3 is located only at the edge of the front end face of the base 1. At this time, the essence in the liquid outlet channel 1005 can be drawn from the edge to the first liquid outlet hole 2.

[0066] In the second configuration, the first ventilation groove 3 is located only at the corner of the front end of the base 1, allowing the essence to be drawn from the corner of the base 1.

[0067] In the third configuration, multiple first ventilation slots 3 can be configured, and different first ventilation slots 3 are respectively configured on the edges and corners of the front face. At this time, the essence can be drawn from the edges and corners at the same time, which can further increase and even out the suction force of the essence, and make the liquid output more uniform and stable.

[0068] Here, all three solutions can achieve the effect of essence flowing out. In practical applications, the specific position of the first ventilation groove 3 can be adjusted according to actual needs. No specific restrictions are made here. As long as the technical means of opening the first ventilation groove 3 is adopted in any position on the edge of the base 1, it should be included in the scope of interpretation of this application. Furthermore, the first ventilation groove 3 in this embodiment is set in the corner area of ​​the base 1 as an example.

[0069] Furthermore, referring to Figure 5 The first liquid outlet 2 and the first venting groove 3 are configured in multiple sets. It can be understood that the first liquid outlet 2 and the first venting groove 3 are interconnected to form a pair. Based on this, the multiple sets of first liquid outlet 2 and first venting groove 3 are arranged at intervals along the outer periphery of the base 1. In an optional embodiment, the multiple sets of first liquid outlet 2 and first venting groove 3 can be arranged around the base 1 respectively.

[0070] By setting multiple sets of first liquid outlet holes 2 and first ventilation grooves 3, on the one hand, the liquid outlet area of ​​the essence can be widened, on the other hand, the uniformity of the essence outlet can be optimized, and the overall liquid output can be increased.

[0071] For example, the specific number of the first liquid outlet hole 2 and the first venting groove 3 can be two, three, four, five, six, seven or eight, etc. The specific number of the first liquid outlet hole 2 and the first venting groove 3 can be adjusted according to actual needs, and no specific limitation is made here. In this embodiment, four sets are used as an example, and the four sets of first liquid outlet holes 2 and first venting grooves 3 are distributed on the four corners of the front end face.

[0072] Furthermore, referring to Figure 2 and Figure 3 In the embodiment provided in this example, when the first liquid outlet 2 is located on the step portion 101, the step portion 101 is also provided with a second venting groove 4. The second venting groove 4 is located between the first liquid outlet 2 and the recessed portion 102, and the second venting groove 4 is connected to the first liquid outlet 2 and the recessed portion 102 respectively.

[0073] Based on the above configuration, the second venting groove 4 can connect the first liquid outlet 2 and the recessed portion 102, allowing the essence to flow freely in the first liquid outlet 2 and the recessed portion 102. This facilitates the even distribution of the essence in the recessed portion 102 and the first liquid outlet 2. Furthermore, the external negative pressure can further act on the recessed portion 102, thereby extracting the essence accumulated in the recessed portion 102 and increasing the liquid output of the anti-clogging applicator when it is blocked.

[0074] Furthermore, referring to Figure 1It also includes an adsorption sleeve 5. In this embodiment, the adsorption sleeve 5 has a ring structure, and an opening is provided through the middle of the adsorption sleeve 5. The size of the opening of the adsorption sleeve 5 is larger than the size of the base 1.

[0075] In the specific setup, the adsorption sleeve 5 is fitted onto the outside of the base 1, and the adsorption sleeve 5 is connected to the base 1 through a sealing ring 9. At this time, a negative pressure cavity 6 is formed between the adsorption sleeve 5 and the base 1. The base 1 is surrounded by the negative pressure cavity 6. When a vacuum is drawn at the negative pressure cavity 6, the entire base 1 can be placed in the negative pressure area, so that the multiple first ventilation slots 3 set on the base 1 can simultaneously receive negative pressure from the external negative pressure cavity 6. The essence can flow out simultaneously from multiple peripheral positions of the base 1, and the application effect is guaranteed.

[0076] Furthermore, referring to Figure 5 The base 1 is also provided with a second liquid outlet 7, which is connected to the liquid outlet channel 1005, and the second liquid outlet 7 is located in the recessed part 102, and the micro needle avoids the second liquid outlet 7.

[0077] In this embodiment, the second liquid outlet 7 is located in the middle region of the recess 102. The second liquid outlet 7 and the first liquid outlet 2 near the edge of the base 1 form a liquid outlet scheme in which liquid is discharged from the middle and the edge at the same time. Under this setting, the uniformity of liquid discharge can be effectively improved, and the overall liquid discharge volume can be further increased.

[0078] Continue to refer to Figure 5 In this embodiment, in order to improve the nursing effect, multiple microneedles are usually provided. To facilitate the installation of multiple microneedles, the base 1 also includes a microneedle chip 8. The microneedle chip 8 is fixed at the front end and located in the recess 102. At this time, the microneedles are the microneedles on the microneedle chip 8.

[0079] Based on the above structure, by directly using microneedle wafer 8, the difficulty of setting up multiple microneedles is greatly reduced, and production and assembly are more efficient.

[0080] It is understandable that when the microneedle chip 8 is located in the recessed portion 102, in order to avoid blocking the first liquid outlet hole 2 and the second liquid outlet hole 7, a clearance hole can be opened on the microneedle chip 8. The clearance hole can be connected to the first liquid outlet hole 2 and the second liquid outlet hole 7 respectively to realize the liquid outlet function of both. Correspondingly, with the clearance hole set, the microneedle can also avoid the first liquid outlet hole 2 and the second liquid outlet hole 7, which meets the actual use requirements.

[0081] Reference Figure 8 and Figure 9 In some embodiments, this embodiment further provides a beauty device, which includes the aforementioned anti-clogging liquid application head and a beauty device body 1001, with the anti-clogging liquid application head disposed on the beauty device body 1001.

[0082] It is understood that beauty devices typically have negative pressure adsorption, vibration and liquid supply functions. The beauty device shown in this embodiment also includes: a negative pressure mechanism 1002, a liquid storage chamber 1003, and a vibration mechanism 1004.

[0083] The liquid storage chamber 1003 is disposed on the beauty device body 1001. The liquid storage chamber 1003 can store the essence, and the liquid storage chamber 1003 is connected to the base 1 through the liquid outlet channel 1005. The essence can flow out from the liquid storage chamber 1003, pass through the liquid outlet channel 1005, and finally flow out at the first liquid outlet hole 2 and the second liquid outlet hole 7.

[0084] In addition, the negative pressure mechanism 1002 is also set on the beauty device body 1001, and the negative pressure mechanism 1002 is connected to the negative pressure cavity 6. The negative pressure mechanism 1002 can draw air from the negative pressure cavity 6 to form a negative pressure area, thereby generating negative pressure. This negative pressure can draw the essence out from the first liquid outlet 2 and the second liquid outlet 7, providing power for the liquid dispensing action.

[0085] Furthermore, the anti-clogging applicator head mentioned above is mounted on the vibration mechanism 1004, which is also located within the beauty device body 1001. Based on this, the vibration mechanism 1004 can drive the anti-clogging applicator head to vibrate at a high frequency. On the one hand, the anti-clogging applicator head can tap the skin to facilitate the absorption of the essence; on the other hand, it can also drive the microneedles to pierce the stratum corneum of the skin to form absorption channels and promote the absorption of the essence.

[0086] Based on the above settings, a beauty device was obtained that is not easily blocked, has uniform liquid output, stable liquid output, and excellent penetration enhancement effect.

[0087] Therefore, the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A clog-resistant liquid applicator for applying liquid under negative pressure conditions, characterized in that, The device includes a base (1), which has a front end face and a liquid outlet channel (1005); the front end face has a stepped portion (101) and a recessed portion (102), the stepped portion (101) is arranged around the recessed portion (102), the base (1) has a first liquid outlet hole (2), the first liquid outlet hole (2) is located in the stepped portion (101) and / or the recessed portion (102), the stepped portion (101) has a first venting groove (3), the first venting groove (3) is connected to the first liquid outlet hole (2), the first venting groove (3) has a through opening on the outer side wall of the base (1), and the recessed portion (102) has a micro needle, the micro needle avoiding the first liquid outlet hole (2).

2. The anti-clogging liquid application head according to claim 1, characterized in that, The first liquid outlet (2) includes a first stepped section (21) and a second stepped section (22) that are interconnected. The first stepped section (21) is close to the front end face, and the second stepped section (22) is connected to the liquid outlet channel (1005). The diameter of the first stepped section (21) is larger than that of the second stepped section (22).

3. The anti-clogging liquid application head according to claim 1, characterized in that, The depth of the first ventilation groove (3) is less than or equal to the height of the step portion (101).

4. The anti-clogging liquid application head according to claim 1, characterized in that, The first ventilation groove (3) is located in the edge and / or corner area of ​​the base (1).

5. The anti-clogging liquid application head according to claim 1, characterized in that, When the first liquid outlet (2) is located in the stepped portion (101), the stepped portion (101) is also provided with a second venting groove (4), which is connected to the first liquid outlet (2) and the recessed portion (102) respectively.

6. The anti-clogging liquid application head according to claim 1, characterized in that, It also includes an adsorption sleeve (5), which is sleeved on the outside of the base (1), and a negative pressure cavity (6) is formed between the adsorption sleeve (5) and the base (1).

7. The anti-clogging liquid application head according to claim 1, characterized in that, The first liquid outlet (2) and the first venting groove (3) are configured in multiple groups, and the multiple groups of the first liquid outlet (2) and the first venting groove (3) are arranged at intervals along the outer periphery of the base (1).

8. The anti-clogging liquid application head according to claim 1, characterized in that, The base (1) is also provided with a second liquid outlet (7), which is located in the recess (102), and the microneedle avoids the second liquid outlet (7).

9. The anti-clogging liquid application head according to claim 1, characterized in that, The base (1) includes a microneedle wafer (8), and the microneedles are microneedles on the microneedle wafer (8).

10. A beauty device, characterized in that, The device includes the anti-clogging applicator head as described in any one of claims 1-9, and also includes the beauty device body (1001), wherein the anti-clogging applicator head is disposed on the beauty device body (1001).

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