Beauty microneedle with rotary adjusting gear

Abstract

The invention provides a beauty microneedle with a rotary adjusting gear. The beauty microneedle comprises a holding handle, a shell, a needle seat, a microneedle body and the like. An annular track is arranged on the inner side of the rear cover cap, gear grooves with different depths are formed in the track and matched with a gear shaft at the rear end of the driving rod, and the extending and retracting length of the microneedle can be accurately controlled. The spring in the channel provides retraction force for the driving rod, skin injury is avoided, and gear adjustment is stabilized. The rear cap and the holding handle are axially fixed and rotate circumferentially, so that structural stability and convenience in operation are guaranteed. The track is connected with the rear cap through a connecting strip, so that secondary use of the microneedle is prevented. And due to the arc guide surfaces between the adjacent gear grooves, the gear switching is smoother, and the operation smoothness and the structural stability are improved. And the gear mark outside the rear cover cap corresponds to the indication mark on the holding handle, so that a user can know the current gear conveniently. The beauty microneedle provides an efficient, accurate, safe and convenient skin beauty tool for a user.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a cosmetic microneedle with a rotation adjustment gear. Background Art

[0002] As people's demand for beauty continues to increase, various beauty technologies and products emerge in an endless stream. Among the many beauty methods, beauty microneedle therapy has gradually attracted attention. Beauty microneedle is a technology that uses tiny needles to form tiny channels on the surface of the skin. Through these channels, drug penetration can be promoted and the bioavailability of drugs can be increased, thereby achieving the purpose of improving skin conditions.

[0003] In the process of using cosmetic microneedles, adjusting their extension length is a key link. Different skin conditions and treatment needs require different microneedle extension lengths. For example, for thinner skin or first-time users, a shorter microneedle extension length may be required to avoid excessive irritation; while for thicker skin or situations that require deeper treatment, a longer microneedle extension length may be required.

[0004] At present, there are some problems with the extension length adjustment of cosmetic microneedle products on the market. The adjustment methods of some products are not precise enough to meet the personalized needs of different users. Some products also have complex adjustment structures and inconvenient operation, which increases the difficulty of use for users. In addition, the stability and reliability of some adjustment structures need to be improved, and they may become loose or malfunction during use, affecting the treatment effect.

[0005] In summary, how to design an accurate, convenient, stable and reliable cosmetic microneedle extension length adjustment structure has become an urgent problem to be solved in the current cosmetic microneedle technology field. Summary of the invention

[0006] In view of the problems pointed out in the background technology, the present invention proposes a cosmetic microneedle with a rotation adjustment gear to solve the above technical problems.

[0007] The technical solution of the present invention is achieved in this way: A cosmetic microneedle with a rotation adjustment gear comprises a gripping handle, wherein the front end of the gripping handle is provided with a shell opening toward the front, a needle seat is provided in the shell, a microneedle is provided on the needle seat, a front cover is provided on the front side of the shell, a needle hole corresponding to the microneedle is provided on the front cover, a channel running through both ends of the gripping handle is provided in the gripping handle, the channel is communicated with the interior of the shell, a driving rod that can move forward and backward is connected in the channel, and the front end of the driving rod is fixedly connected to the needle seat, The rear end of the gripping handle is connected to a rotatable rear cover cap, the inner side of the rear cover cap is provided with a circular track, and the track is coaxially arranged with the driving rod; The front side of the track is provided with a gear groove penetrating the inner and outer sides thereof, and the gear groove is provided with a plurality of gear grooves, which are arranged in the circumferential direction of the track, and the depth of the gear groove gradually decreases in the circumferential direction of the track; The rear end of the driving rod is provided with a gear shaft along its radial direction, and the gear shaft is connected to the gear groove; A spring for applying a backward elastic force to the driving rod is arranged in the channel.

[0008] The present invention is further configured such that the spring is sleeved on the driving rod, the front end of the spring abuts against the gripping handle, the rear end of the spring abuts against the driving rod, an annular fixing ring is provided on the driving rod, and the rear end of the spring abuts against the fixing ring.

[0009] The present invention is further configured such that the rear cover cap is opened forward, an annular positioning groove is provided on the inner side wall of the front end of the rear cover cap, and an annular positioning ring is provided on the outer side wall of the rear end of the gripping handle.

[0010] The present invention is further configured such that the rear end of the track is connected to the inner side wall of the rear cover cap via a connecting strip, and a plurality of connecting strips are provided, and the plurality of connecting strips are arranged at intervals in the circumferential direction of the track.

[0011] The present invention is further configured such that 2 to 4 connecting strips are provided.

[0012] The present invention is further configured such that the gear position grooves are provided with 6.

[0013] The present invention is further configured such that an arc guiding surface is formed between the adjacent gear grooves.

[0014] The present invention is further configured such that the gripping handle is provided with stripes for increasing friction.

[0015] The present invention is further configured such that the outer surface of the rear cover cap is provided with a gear position mark corresponding to the gear position groove.

[0016] The present invention is further configured such that the rear cover cap is fixedly connected to the gripping handle in the axial direction of the gripping handle.

[0017] By adopting the above technical solution, the beneficial effects of the present invention are as follows: First, by rotating the rear cover cap to drive the track to rotate, and by using the gear grooves of different depths in conjunction with the gear shaft, the extension and retraction length of the microneedle can be precisely controlled to meet the personalized requirements of different skin conditions and treatment needs.

[0018] Secondly, the spring is set to provide retraction force for the driving rod, ensuring that the microneedles can retract quickly when they are not needed to be extended, avoiding unnecessary damage to the skin, and at the same time playing a stabilizing role in the gear adjustment process.

[0019] Furthermore, the axial fixed connection and circumferential rotation connection design between the rear cap and the handle ensures structural stability and facilitates user operation. The track and the rear cap are connected by multiple connecting strips, which can prevent the beauty microneedles from being reused while maintaining sufficient connection force, ensuring safety and hygiene.

[0020] In addition, the arc guide surface between adjacent gear grooves makes the gear shaft smoother when switching gears, improving the smoothness of operation and the stability of the structure. The gear mark on the outer surface of the rear cap corresponds to the indicator mark on the grip handle, which makes it easy for users to intuitively understand the current gear and further improves the convenience of use. In summary, the beauty microneedle provides users with an efficient, precise, safe and convenient skin beauty tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a schematic diagram of the structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the decomposition of the present invention.

[0024] Figure 3 It is a schematic diagram of the internal structure of the present invention.

[0025] Figure 4 The internal structure of the back end of the present invention is shown in FIG. Figure 1 .

[0026] Figure 5 The internal structure of the back end of the present invention is shown in FIG. Figure 2 .

[0027] Figure 6 The internal structure of the back end of the present invention is shown in FIG. Figure 3 .

[0028] Figure 7 It is a schematic diagram of the structure of the track and the gear groove of the present invention.

[0029] Figure 8 It is a schematic diagram of the structure of the connecting strip on the track of the present invention. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] For reference Figure 1-Figure 8 The present invention is described: Embodiment: A cosmetic microneedle with a rotation adjustment gear comprises a gripping handle 1, which is cylindrical and provides a comfortable gripping feeling for the user when using the cosmetic microneedle 4. The front end of the gripping handle 1 is provided with a housing 2 which is opened forward, and the gripping handle 1 is provided with a channel 6 which runs through both ends of the length direction thereof, and the channel 6 is coaxially arranged with the gripping handle 1, and the channel 6 is connected with the interior of the housing 2. Such a design enables the driving rod 7 to move smoothly forward and backward in the channel 6, thereby driving the microneedle 4 on the needle seat 3 to move accordingly.

[0032] A needle seat 3 is arranged in the housing 2, and a microneedle 4 is arranged on the needle seat 3. A front cover is arranged on the front side of the housing 2, and a needle hole 5 corresponding to the microneedle 4 is arranged on the front cover. When in use, the microneedle 4 extends from the needle hole 5.

[0033] Position and function of housing 2: A housing 2 opened forward is provided at the front end of the gripping handle 1. The housing 2 provides a protective and supporting space for the needle seat 3, microneedle 4 and other components inside.

[0034] Connection between the housing 2 and other components: A front cover is provided on the front side of the housing 2, and a pinhole 5 corresponding to the microneedle 4 is provided on the front cover. When in use, the microneedle 4 extends from the pinhole 5 and contacts the skin to achieve the purpose of cosmetic treatment.

[0035] Needle seat 3: a needle seat 3 is provided inside the housing 2, and a microneedle 4 is provided on the needle seat 3. The needle seat 3 plays a role in fixing the microneedle 4 to ensure the stability of the microneedle 4 during use.

[0036] Microneedle 4: Microneedle 4 is the core component of the cosmetic microneedle 4. It promotes drug penetration and improves the bioavailability of drugs by forming tiny channels 6 on the skin surface. The material of the microneedle 4 is usually medical stainless steel, etc., which has good biocompatibility and durability.

[0037] Front cover structural features: The front cover is located at the front side of the housing 2, and is provided with pinholes 5 corresponding to the microneedles 4. The size and shape of the pinholes 5 are carefully designed to ensure that the microneedles 4 can be smoothly extended and to prevent foreign matter from entering the housing 2.

[0038] Function of the front cover: The front cover not only protects the microneedles 4, but also controls the length and direction of the microneedles 4, thereby improving the accuracy and effect of the cosmetic treatment.

[0039] A driving rod 7 that can move forward and backward is connected in the channel 6 , and the front end of the driving rod 7 is fixedly connected to the needle seat 3 . The driving rod 7 moves forward and backward, driving the microneedle 4 on the needle seat 3 to move forward and backward.

[0040] Position and connection of driving rod 7: A driving rod 7 that can move forward and backward is connected in channel 6, and the front end of driving rod 7 is fixedly connected to needle seat 3. The movement of driving rod 7 in channel 6 can directly drive microneedle 4 on needle seat 3 to move forward and backward.

[0041] Action mechanism of the driving rod 7: By controlling the forward and backward movement of the driving rod 7, the extended length of the microneedle 4 can be precisely adjusted. This design allows the user to flexibly adjust the extended length of the microneedle 4 according to different skin conditions and treatment needs to achieve the best cosmetic effect.

[0042] The rear end of the gripping handle 1 is connected with a rotatable rear cover cap 8 , and an annular track 9 is arranged inside the rear cover cap 8 . The track 9 is coaxially arranged with the driving rod 7 .

[0043] A gear groove 10 is provided on the front side surface of the track 9 and runs through the inner and outer sides thereof. There are multiple gear grooves 10 , which are evenly spaced in the circumferential direction of the track 9 . The depth of the gear grooves 10 gradually decreases in the circumferential direction of the track 9 .

[0044] A gear shaft 11 is provided at the rear end of the driving rod 7 along its radial direction, and the gear shaft 11 is connected to the gear groove 10 .

[0045] The rear cover cap 8 rotates, driving the track 9 to rotate. As the track 9 rotates, the gear shaft 11 enters the gear groove 10 in sequence. As the depth of the gear groove 10 changes, the driving rod 7 moves back and forth, thereby controlling the extension and retraction of the microneedle 4.

[0046] A spring 12 is arranged in the channel 6 to apply a backward elastic force to the driving rod 7 .

[0047] The front side of the track 9 is provided with a gear groove 10 that runs through the inner and outer sides thereof, and there are a plurality of gear grooves 10. These gear grooves 10 are arranged at equal intervals in the circumferential direction of the track 9, showing a uniform distribution state. In the circumferential direction of the track 9, the depth of the gear groove 10 gradually decreases, and this design provides different adjustment gears for the extension and retraction of the microneedle 4.

[0048] The rear end of the driving rod 7 is provided with a gear shaft 11 along its radial direction, and the gear shaft 11 is connected in the gear groove 10. The gear shaft 11 cooperates with the gear groove 10 on the track 9 to achieve accurate adjustment of the extension length of the microneedle 4.

[0049] When the rear cover 8 rotates, the track 9 is driven to rotate. As the track 9 rotates, the gear shaft 11 sequentially enters different gear grooves 10. Since the depth of the gear groove 10 gradually changes in the circumferential direction, the driving rod 7 can move forward and backward according to the depth change of the gear groove 10, thereby controlling the extension and retraction of the microneedle 4.

[0050] For example, when the gear shaft 11 enters the shallow gear groove 10 from the deeper gear groove 10, the driving rod 7 will move forward. In this process, the front end of the driving rod 7 is fixedly connected to the needle seat 3, thereby driving the microneedle 4 on the needle seat 3 to extend.

[0051] A spring 12 is provided in the channel 6 to exert a backward elastic force on the driving rod 7. When the gear shaft 11 enters the deeper gear groove 10 from the shallower gear groove 10, the driving rod 7 moves backward under the action of the spring 12. At this time, the microneedle 4 is controlled to retract due to the fixed connection between the driving rod 7 and the needle seat 3.

[0052] The presence of the spring 12 ensures the stability and reliability of the microneedle 4 during the adjustment process. It can provide the driving rod 7 with a corresponding force in time when the gear shaft 11 enters the gear groove 10 of different depths, making the extension and retraction of the microneedle 4 smoother and more accurate.

[0053] In summary, through the coordinated action of the rear cover cap 8, the track 9, the gear shaft 11 and the spring 12, the beauty microneedle 4 with a rotation adjustment gear can achieve precise control of the extension length of the microneedle 4, meet the personalized needs of different users, and provide users with a more efficient and convenient beauty experience.

[0054] The spring 12 is sleeved on the driving rod 7, the front end of the spring 12 abuts against the gripping handle 1, the rear end of the spring 12 abuts against the driving rod 7, and an annular fixing ring 13 is provided on the driving rod 7, the rear end of the spring 12 abuts against the fixing ring 13. The spring 12 provides a retraction force for the driving rod 7 to move backward. This installation method enables the spring 12 to function stably. The spring 12 is in a compressed state, and always provides a retraction force for the driving rod 7 to move backward. When the gear shaft 11 enters the deeper gear groove 10 from the shallower gear groove 10, the driving rod 7 will move backward rapidly under the retraction force of the spring 12.

[0055] The fixing ring 13 plays an important role in this structure. It provides a stable support point for the spring 12, ensures that the rear end of the spring 12 can always keep in contact with the driving rod 7, and effectively transmits the retraction force to the driving rod 7. The annular design of the fixing ring 13 matches the shape of the driving rod 7, and can be tightly fixed on the driving rod 7 without loosening or displacement during use.

[0056] The retraction force provided by the spring 12 for moving backward is crucial for the normal use of the cosmetic microneedle 4. On the one hand, it allows the microneedle 4 to retract quickly when it is not needed to be extended, avoiding unnecessary damage to the skin. On the other hand, the existence of the retraction force also makes the extension length adjustment of the microneedle 4 more precise and stable. When the user turns the rear cap 8 to adjust the gear position, the retraction force of the spring 12 can cooperate with the depth change of the gear groove 10 to ensure that the driving rod 7 can accurately move to the corresponding position, thereby controlling the extension length of the microneedle 4.

[0057] The rear cover cap 8 is opened forward, and an annular positioning groove 14 is provided on the inner wall of the front end of the rear cover cap 8, and an annular positioning ring 15 is provided on the outer wall of the rear end of the gripping handle 1. The positioning ring 15 is connected in the positioning groove 14, so that the rear cover cap 8 and the gripping handle 1 form an axial fixed connection and a circumferential rotation connection.

[0058] Axial fixed connection: The cooperation between the positioning ring 15 and the positioning groove 14 enables the rear cap 8 to be fixedly connected to the gripping handle 1 in the axial direction. This means that during normal use, the rear cap 8 will not move along the axial direction of the gripping handle 1, thereby ensuring the stability of the entire structure of the cosmetic microneedle 4. For example, when the user turns the rear cap 8 to adjust the extension length of the microneedle 4, the rear cap 8 will not be separated from the gripping handle 1 due to unexpected axial force, thereby ensuring the safety and reliability of the operation.

[0059] Circumferential rotation connection: Although the rear cover cap 8 and the gripping handle 1 are fixed in the axial direction, they can rotate relative to each other in the circumferential direction. This circumferential rotation connection is the key to realizing the function of rotating and adjusting the gear position of the cosmetic microneedle 4. When the user rotates the rear cover cap 8, the rear cover cap 8 can drive the inner track 9 to rotate together. Since the track 9 is provided with gear grooves 10 of different depths, and the gear shaft 11 is connected to the gear groove 10, the rotation of the track 9 will cause the gear shaft 11 to switch between different gear grooves 10, thereby controlling the extension and retraction of the microneedle 4 through the driving rod 7.

[0060] The rear end of the track 9 is connected to the inner side wall of the rear cap 8 through a connecting strip 16, and a plurality of connecting strips 16 are provided, and the plurality of connecting strips 16 are arranged at equal intervals in the circumferential direction of the track 9. This connection method ensures a stable connection between the track 9 and the rear cap 8, so that the rotation of the rear cap 8 can be effectively transmitted to the track 9, thereby realizing the control of the gear groove 10 and the gear shaft 11, and then adjusting the extension and retraction of the microneedle 4.

[0061] In the clockwise direction of the track 9, the depth of the gear groove 10 gradually decreases. This means that when the gear shaft 11 is connected to the deepest gear groove 10, the rear cover cap 8 rotates counterclockwise, and the gear shaft 11 can gradually enter the next shallower gear groove 10. As the rear cover cap 8 rotates counterclockwise, the gear shaft 11 will pass through the gear grooves 10 of different depths in sequence, thereby controlling the driving rod 7 to move forward, so that the microneedle 4 extends. When the gear shaft 11 moves to the shallowest gear groove 10, the rear cover cap 8 continues to rotate counterclockwise, and the gear shaft 11 can enter the shallowest gear groove 10.

[0062] When the gear shaft 11 is connected to the deepest gear groove 10, the rear cover 8 cannot rotate clockwise. This design is to prevent the microneedle 4 from accidentally extending due to misoperation under certain circumstances. If the rear cover 8 is forcibly rotated clockwise, the connecting strip 16 will break, and the connection between the track 9 and the rear cover 8 will be separated. In this way, the rotation of the rear cover 8 cannot drive the track 9 to rotate, and the driving rod 7 can no longer be controlled to move forward. At this time, the microneedle 4 is in a state of retracting into the housing 2, and the cosmetic microneedle 4 cannot be used.

[0063] This design effectively solves the problem that the cosmetic microneedle 4 may be reused for a second time. In some cases, in order to ensure the hygiene and safety of the cosmetic microneedle 4 and avoid risks such as cross infection, it is necessary to prevent it from being used a second time. Through this special structural design, once the rear cover cap 8 is forcibly rotated clockwise under certain circumstances, causing the connecting strip 16 to break, the cosmetic microneedle 4 loses the function of adjusting the extension of the microneedle 4 and cannot be used again, ensuring the safety and hygiene of the user.

[0064] In summary, this design of the beauty microneedle 4 with a special connection structure and rotation restriction not only realizes the precise adjustment function of the extension length of the microneedle 4, but also effectively prevents the beauty microneedle 4 from being reused for a second time, providing users with a safer and more reliable beauty tool.

[0065] There are 2-4 connecting strips 16, preferably 2 or 3. The connecting strips 16 play a key role in connecting the track 9 and the rear cover cap 8. They maintain sufficient connection force to ensure that during normal use, the rotation of the rear cover cap 8 can be smoothly transmitted to the track 9, thereby realizing the cooperation between the gear groove 10 and the gear shaft 11 to control the extension and retraction of the microneedle 4. The size of this connection force needs to be precisely designed and tested to ensure that it will not loosen or break during normal operation, and can break in time under specific circumstances to prevent the beauty microneedle 4 from being used twice.

[0066] When the rear cover 8 rotates clockwise, due to the large height difference between the deepest gear groove 10 and the shallowest gear groove 10, a resistance is generated to prevent the rear cover 8 from rotating clockwise. At this time, if the rear cover 8 is forcibly rotated, the connecting strip 16 will be subjected to a huge external force. The connecting strip 16 should be designed to maintain sufficient connection force to ensure stability during normal use, and to be able to break under such forced rotation.

[0067] The purpose of this design is to prevent the cosmetic microneedle 4 from being reused for a second time. Once the connecting strip 16 is broken, the connection between the track 9 and the rear cover 8 is separated, and the rotation of the rear cover 8 cannot drive the track 9 to rotate, thereby failing to control the driving rod 7 to move forward, causing the microneedle 4 to be retracted into the housing 2, and the cosmetic microneedle 4 cannot be used any more.

[0068] In summary, the number selection, function and breaking mechanism of the connecting strips 16 under certain circumstances are all aimed at achieving safe and reliable use of the cosmetic microneedles 4 while preventing the risks of secondary use.

[0069] When the gear shaft 11 is in the deepest gear groove 10, the rear cover cap 8 can only rotate counterclockwise and cannot rotate clockwise. When the gear shaft 11 is in other gear grooves 10, the rear cover cap 8 can rotate counterclockwise and clockwise.

[0070] There are 6 gear grooves 10, corresponding to 6 adjustment gears. These gears are set to meet the personalized needs of different users for the extension length of the microneedles 4. Different skin conditions and treatment purposes may require different extension lengths of the microneedles 4. Through these 6 gears, users can accurately adjust the extension degree of the microneedles 4 to achieve the best cosmetic effect. For example, for users with more sensitive skin, a shallower gear can be selected to shorten the extension length of the microneedles 4 and reduce irritation to the skin; for users who need deeper treatment, a deeper gear can be selected to increase the extension length of the microneedles 4 to promote drug penetration and absorption.

[0071] An arc guide surface 19 is formed between adjacent gear grooves 10. The setting of the arc guide surface 19 helps the gear shaft 11 to move between two adjacent gear grooves 10. The setting of this arc guide surface 19 plays an important role. It helps the gear shaft 11 to move between two adjacent gear grooves 10. When the user turns the rear cover cap 8 to adjust the gear, the gear shaft 11 needs to move from one gear groove 10 to another gear groove 10. The existence of the arc guide surface 19 makes this movement process smoother and more natural. It provides a smooth transition path for the gear shaft 11, reducing the jamming or obstruction that the gear shaft 11 may encounter during the movement.

[0072] Advantages of the arc guide surface 19: Improve the smoothness of operation: The design of the arc guide surface 19 enables the gear shaft 11 to easily switch between different gear grooves 10, and the user can experience a smoother operation experience when adjusting the extension length of the microneedle 4. Whether moving from a deeper gear groove 10 to a shallower gear groove 10, or vice versa, the arc guide surface 19 can ensure that the gear shaft 11 moves smoothly.

[0073] Enhanced structural stability: The presence of the arc guide surface 19 also helps to enhance the structural stability of the entire cosmetic microneedle 4. During the movement of the gear shaft 11, the arc guide surface 19 can disperse a portion of the external force and reduce the impact on the gear groove 10 and the gear shaft 11. This can extend the service life of the cosmetic microneedle 4 and reduce structural damage caused by frequent gear adjustments.

[0074] Accurate gear adjustment: The shape and size of the arc guide surface 19 are carefully designed to help users more accurately control the moving distance of the gear shaft 11. This makes the extension length of the microneedle 4 more accurately adjusted, meeting the personalized needs of different users for beauty effects.

[0075] The gripping handle 1 is provided with stripes 17 for increasing friction. The presence of these stripes 17 can improve the user's grip stability when using the cosmetic microneedle 4. During operation, the user needs to hold the gripping handle 1 to control the position and direction of the microneedle 4. If the surface of the gripping handle 1 is smooth, it may cause the hand to slip, affecting the accuracy and safety of the operation. The design of the stripes 17 can increase the friction between the gripping handle 1 and the hand, so that the user can hold the gripping handle 1 more firmly, and maintain a good grip even when the hand is sweating or wet. In addition, the stripes 17 can also increase the aesthetics of the gripping handle 1, making it look more professional and fashionable.

[0076] The outer surface of the rear cover cap 8 is provided with six gear position marks 18 corresponding to the six gear position grooves 10 respectively, and an indicator mark 22 is provided on the outer surface of the rear end of the grip 1, and the indicator mark 22 corresponds to the gear position mark 18 to indicate the current gear position. Functions of the gear position mark and the indicator mark: Clear gear position: The setting of gear mark enables the user to intuitively understand the gear position of the current beauty microneedle 4. Each gear mark corresponds to a specific gear groove 10, representing a different extension length of the microneedle 4. The user can quickly and accurately determine the extension degree of the current microneedle 4 by observing the gear mark, so as to adjust it according to their needs.

[0077] Convenient gear adjustment: When adjusting the gear, the user can turn the rear cover cap 8 in a targeted manner according to the indication of the gear mark. The clear identification of the gear mark enables the user to find the desired gear more easily, thereby improving the convenience of operation.

[0078] Indicating the current gear position: The indicator mark on the outer side of the rear end of the grip 1 corresponds to the gear position mark and is used to indicate the current gear position. When the user rotates the rear cap 8, the indicator mark will move with the rotation of the rear cap 8 and always point to the current gear position mark. In this way, the user can clearly understand the current gear state of the beauty microneedle 4 at any time, which is convenient for precise adjustment and control.

[0079] The setting of gear mark and indicator mark greatly enhances the user experience when using the Beauty Micro Needle 4. They provide users with intuitive and accurate gear information, allowing users to adjust and control the gear more conveniently. At the same time, the presence of these marks also increases the professionalism and reliability of the Beauty Micro Needle 4, allowing users to use it with more confidence.

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cosmetic microneedle with a rotation adjustment gear, comprising a gripping handle (1), wherein the front end of the gripping handle (1) is provided with a shell (2) opened forward, a needle seat (3) is provided in the shell (2), a microneedle (4) is provided on the needle seat (3), a front cover is provided on the front side of the shell (2), a needle hole (5) corresponding to the microneedle (4) is provided on the front cover, a channel (6) passing through both ends of the gripping handle (1), the channel (6) is connected to the interior of the shell (2), a driving rod (7) movable forward and backward is connected in the channel (6), and the front end of the driving rod (7) is fixedly connected to the needle seat (3), characterized in that: The rear end of the gripping handle (1) is connected to a rotatable rear cover cap (8), the inner side of the rear cover cap (8) is provided with an annular track (9), and the track (9) is coaxially arranged with the driving rod (7); A gear groove (10) is provided on the front side surface of the track (9) and runs through the inner and outer sides thereof. A plurality of gear grooves (10) are provided. The plurality of gear grooves (10) are arranged in a circumferential direction of the track (9). The depth of the gear grooves (10) gradually decreases in the circumferential direction of the track (9); A gear shaft (11) is provided at the rear end of the driving rod (7) along its radial direction, and the gear shaft (11) is connected to the gear groove (10); A spring (12) is arranged in the channel (6) for applying a backward elastic force to the driving rod (7).

2. A cosmetic microneedle with a rotation adjustment gear according to claim 1, characterized in that: The spring (12) is sleeved on the driving rod (7), the front end of the spring (12) abuts against the holding handle (1), and the rear end of the spring (12) abuts against the driving rod (7). An annular fixing ring (13) is provided on the driving rod (7), and the rear end of the spring (12) abuts against the fixing ring (13).

3. The cosmetic microneedle with a rotation adjustment gear according to claim 1, characterized in that: The rear cover cap (8) is opened forward, an annular positioning groove (14) is provided on the inner side wall at the front end of the rear cover cap (8), and an annular positioning ring (15) is provided on the outer side wall at the rear end of the gripping handle (1).

4. The cosmetic microneedle with a rotation adjustment gear according to claim 1, characterized in that: The rear end of the track (9) is connected to the inner side wall of the rear cover cap (8) via a connecting strip (16), and a plurality of connecting strips (16) are provided, and the plurality of connecting strips (16) are arranged at intervals in the circumferential direction of the track (9).

5. The cosmetic microneedle with a rotation adjustment gear according to claim 4, characterized in that: The number of the connecting strips (16) is 2 to 4.

6. The cosmetic microneedle with a rotation adjustment gear according to claim 1, characterized in that: The gear position grooves (10) are provided in six numbers.

7. The cosmetic microneedle with a rotation adjustment gear according to claim 6, characterized in that: An arc guide surface (19) is formed between the adjacent gear grooves (10).

8. The cosmetic microneedle with a rotation adjustment gear according to claim 1, characterized in that: The gripping handle (1) is provided with stripes (17) for increasing friction.

9. The cosmetic microneedle with rotation adjustment gear according to claim 1, characterized in that: The outer surface of the rear cover cap (8) is provided with a gear position mark (18) corresponding to the gear position groove (10).

10. The cosmetic microneedle with rotation adjustment gear according to claim 1, characterized in that: The rear cover cap (8) is fixedly connected to the gripping handle (1) in the axial direction of the gripping handle (1).

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