CN211214951U - Skin micro-needle assembly and micro-needle beauty pen - Google Patents

Abstract

The utility model discloses a skin micro-needle component and a micro-needle beauty pen, wherein, the skin micro-needle component comprises a micro-needle unit; the outer tube is provided with a first accommodating cavity for accommodating the micro-needle head unit, a first opening and a second opening which are used for communicating the first accommodating cavity with the outside are respectively arranged at two ends of the outer tube, and a first through hole which is used for communicating the first accommodating cavity with the outside is arranged on the side wall of the outer tube; and the first push rod is connected to the micro-needle unit, the free end of the first push rod extends out of the outer tube from the second opening, and the first push rod is arranged to reciprocate along the axis direction of the first push rod so as to drive the micro-needle unit to extend out of the first opening or move back to the first accommodating cavity. When the micro-needle unit retracts into the outer tube, the gas in the first accommodating cavity of the outer tube is extruded by the micro-needle unit and then can be discharged to the outside of the outer tube from the first through hole, so that the gas pressure in the first accommodating cavity is prevented from increasing, and the resistance of the micro-needle unit retracting into the first accommodating cavity is formed.

Description

Skin micro-needle assembly and micro-needle beauty pen

Technical Field

The utility model relates to a micropin beauty apparatus, concretely relates to skin micropin subassembly and micropin beauty pen.

Background

Some of the microneedle cosmetic pens are used, the microneedle unit acts on the user intermittently, and for convenience of operation, the microneedle unit of the microneedle cosmetic pen is generally arranged in a housing, and when the microneedle cosmetic pen is used, the housing is abutted against the user, and then the microneedle unit extends out of the housing and acts on the user and retracts into the housing alternately under the action of external force.

When the micro-needle unit retracts into the shell, the air in the cavity of the shell for accommodating the micro-needle unit is compressed, the air pressure of the cavity rises, resistance in the cavity of the micro-needle unit retracting into the shell is formed, and therefore acting force for driving the micro-needle unit to retract into the shell is larger than acting force for driving the micro-needle unit to extend out of the shell.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the microneedle unit is hard when retracting into the shell, according to the utility model discloses an aspect provides a skin microneedle subassembly.

The skin microneedle assembly comprises a microneedle unit; the outer tube is provided with a first accommodating cavity for accommodating the micro-needle head unit, a first opening and a second opening which are used for communicating the first accommodating cavity with the outside are respectively arranged at two ends of the outer tube, and a first through hole which is used for communicating the first accommodating cavity with the outside is arranged on the side wall of the outer tube; and the first push rod is connected to the micro-needle unit, the free end of the first push rod extends out of the outer tube from the second opening, and the first push rod is arranged to reciprocate along the axis direction of the first push rod so as to drive the micro-needle unit to extend out of the first opening or move back to the first accommodating cavity. Because be provided with on the lateral wall of outer tube and hold the first through-hole of chamber and outside intercommunication, when the little needle unit withdrawal outer tube, the first gas that holds in the chamber of outer tube is followed the outside that the little needle unit extruded, can be followed first through-hole and discharged to the outer tube to avoid the first atmospheric pressure that holds in the chamber to rise, form the first resistance that holds in the chamber of little needle unit withdrawal.

In some embodiments, the first push rod includes a first connection portion in which one end is connected to the micro needle unit and a fitting portion connected to the other end of the first connection portion; the cross section of the matching part is set to be non-circular; the second opening is configured to fit with the mating portion. From this, carry out the push-and-pull to little syringe needle unit through first push rod, when making little syringe needle unit and first push rod move relative outer tube together, the push rod can not rotate relative outer tube, and at this moment, little syringe needle unit also can not rotate relative outer tube to guarantee that little syringe needle unit beats the stability of the effect of user's body surface repeatedly.

In some embodiments, the first push rod is removably and non-rotatably connected to the microneedle unit. Therefore, when the micro-needle unit is damaged or needs to be replaced by other types of micro-needle units, the micro-needle unit and the first push rod can be detached, and a new or other types of micro-needle units can be replaced; simultaneously, because first push rod and little needle unit are nonrotatably connected, in the use, little needle unit can not rotate first push rod relatively to guarantee the stability of the effect that little needle unit strikeed user's body surface repeatedly.

In some embodiments, the first connecting portion is provided with a first buckle, the micro-needle unit is provided with a first snap ring adapted to the first buckle, and the first push rod is connected with the first snap ring of the micro-needle unit in a snap fit manner through the first buckle arranged on the first connecting portion. Therefore, the first push rod and the micro-needle unit can be detachably connected and can not rotate relatively.

In some embodiments, the microneedle unit comprises a first seat body and a second seat body which are detachably connected with each other, and a microneedle, wherein the first seat body is connected with the first push rod, the first seat body is provided with a second accommodating cavity for accommodating the second seat body, and the side wall of the first seat body is provided with a second through hole for communicating the second accommodating cavity with the first accommodating cavity; the micro-needle is arranged on the second seat body. The second accommodating cavity is formed in the first seat body, so that the weight of the micro-needle head unit is reduced, and the operation intensity of an operator for moving the micro-needle head unit is reduced; moreover, because the side wall of the second accommodating cavity is provided with the second through hole for communicating the second accommodating cavity with the first accommodating cavity, when the micro-needle unit extends out of the outer tube, compressed gas in the second accommodating cavity can be discharged through the second through hole, so that the resistance of the micro-needle extending out of the outer tube is reduced. The micro-needle is repeatedly pushed and pulled by the first push rod, so that the micro-needle repeatedly knocks the body surface of a user, the skin of the user can more easily absorb nutrient substances in the skin care product, and the beautifying effect is achieved.

In some embodiments, the skin microneedle assembly further comprises a first resilient component; the outer tube is also provided with a third accommodating cavity for accommodating the first elastic component and a third opening for communicating the third accommodating cavity with the outside, and the third accommodating cavity is communicated with the first accommodating cavity through the second opening; a supporting part is arranged at one end of the matching part far away from the first connecting part, and the diameter of the supporting part is larger than that of the matching part and smaller than that of the third opening; the first elastic component is arranged on one side of the supporting part facing the first connecting part, one end of the first elastic component abuts against the supporting part, and the other end of the first elastic component abuts against the outer tube; the first elastic member has an extended state in which the microneedle unit protrudes from the first opening and a compressed state in which the microneedle unit is retracted into the first accommodation chamber. Therefore, the first push rod can drive the micro-needle unit to extend out of the outer tube by applying pressure to the first push rod, and the support part of the first push rod presses the first elastic part on the outer tube while the first push rod moves so as to enable the first elastic part to be in a compressed state; when the pressure applied to the first push rod is removed, the first elastic component returns to the extension state from the compression state, and in the process that the first elastic component returns to the extension state, the micro-needle unit is driven to automatically retract into the first accommodating cavity. Therefore, an operator only needs to apply pressure to the first push rod, and does not need to apply pulling force to the first push rod, and the operation is convenient.

In some embodiments, the outer tube is further provided with a friction structure on its outer diameter for increasing the friction on its outer surface. Therefore, when the skin microneedle assembly is used by an operator, the operator can hold the skin microneedle assembly on the surface of the outer tube provided with the friction structure by one hand and push the first push rod by the other hand to move the first push rod relative to the outer tube. Because the outer surface of the outer tube is provided with the friction structure, the outer tube can be prevented from sliding out of the hand of an operator in the using process, and the using stability of the skin micro-needle assembly is ensured.

In order to solve the problem that the microneedle unit is hard to retract into the shell, according to the utility model discloses an aspect provides a microneedle cosmetic pen.

The microneedle cosmetic pen comprises the skin microneedle assembly; the device also comprises a shell, a moving mechanism and a driving device, wherein the moving mechanism and the driving device are arranged on the shell; the outer pipe is connected with the shell; the moving mechanism is arranged to drive the first push rod to move in a reciprocating manner under the driving of the driving device. Therefore, the driving device can drive the moving mechanism to drive the first push rod and the micro-needle unit connected to the push rod to alternately extend out of the outer tube or retract into the outer tube.

In some embodiments, the movement mechanism is coupled to the first push rod. Therefore, the moving mechanism can drive the micro-needle unit connected to the first push rod to retract into the first accommodating cavity, and the situation that the first push rod cannot normally retract into the first accommodating cavity due to the fact that the first elastic component is blocked in the process of recovering the extending state and cannot recover the extending state is avoided.

In some embodiments, the first push rod further comprises a first connecting rod and a limiting part; the spacing portion is connected to one of the supporting portion of keeping away from first connecting portion through the head rod, and the diameter of spacing portion is greater than the diameter of third open-ended. The microneedle extension position is limited by the limiting part, and the situation that the microneedle extension distance is too large, the spring is compressed excessively, and the service life is shortened is avoided.

Drawings

Fig. 1 is a schematic structural view of a skin microneedle assembly according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of the first elastic member of the skin microneedle assembly of fig. 1 in an extended state;

fig. 3 is a schematic cross-sectional view of the first elastic member of the skin microneedle assembly of fig. 1 in a compressed state;

fig. 4 is a schematic structural view of the skin microneedle assembly shown in fig. 1 in a disassembled state;

FIG. 5 is a structural diagram illustrating a disassembled state of the micro-needle unit shown in FIG. 4;

FIG. 6 is a schematic structural view of the first shaft of FIG. 4 from another perspective;

FIG. 7 is a schematic view of the outer tube of FIG. 4 from another perspective;

fig. 8 is a schematic structural view of a microneedle cosmetic pen according to an embodiment of the present invention;

fig. 9 is a schematic cross-sectional view illustrating a first elastic member of the microneedle cosmetic pen of fig. 8 in an extended state;

fig. 10 is a schematic cross-sectional view illustrating a first elastic member of the microneedle cosmetic pen of fig. 8 in a compressed state;

fig. 11 is a schematic structural view of the microneedle cosmetic pen shown in fig. 8 in a disassembled state;

fig. 12 is a structural diagram of another view angle of the disassembled microneedle cosmetic pen shown in fig. 8.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 to 7 schematically show a micro-needle unit 12 according to an embodiment of the present invention.

As shown in fig. 2 and 3, the micro-needle unit 12 includes a micro-needle unit 12 that can promote the absorption of nutrients of skin care products to the user to achieve a cosmetic effect by acting on the user; the outer tube 11 is integrally formed or machined with a first accommodating cavity 111 for accommodating the micro-needle unit 12, the micro-needle unit 12 is sleeved in the first accommodating cavity 111 of the outer tube 11, two ends of the outer tube 11 are respectively integrally formed or machined with a first opening 112 and a second opening 113 for communicating the first accommodating cavity 111 with the outside, and a first through hole 114 for communicating the first accommodating cavity 111 with the outside is further machined on the side wall of the outer tube 11; a first push rod 13 with one end connected to the microneedle unit 12, the other end of the first push rod 13 (i.e. the free end of the first push rod 13) extending out of the outer tube 11 from the second opening 113, the first push rod 13 being configured to move back and forth along the axial direction thereof, so as to drive the microneedle unit 12 to extend out of the first opening 112 or move back into the first accommodating cavity 111.

When the micro needle unit 12 is used, firstly, the end of the outer tube 11 provided with the first opening 112 is abutted against the body of the user, then the first push rod 13 extending out of the outer tube 11 from the second opening 113 is pushed and pulled alternately, the micro needle unit 12 connected to the first push rod 13 is driven to extend out of and retract into the first accommodating cavity 111 from the first opening 112 of the outer tube 11 alternately, so that the micro needle unit 12 can strike the user repeatedly, the skin of the user can absorb the nutrient substances in the skin care product more easily, and the beautifying effect is achieved. Because the side wall of the outer tube 11 is provided with the first through hole 114 for communicating the first accommodating cavity 111 with the outside, when the micro-needle unit 12 retracts into the outer tube 11 (as shown in fig. 2), after the gas in the first accommodating cavity 111 of the outer tube 11 is squeezed by the micro-needle unit 12, the gas can be discharged to the outside of the outer tube 11 from the first through hole 114, so as to avoid the increase of the gas pressure in the first accommodating cavity 111, form the resistance for retracting the micro-needle unit 12 into the first accommodating cavity 111, and reduce the working strength of the operator using the micro-needle unit 12.

Specifically, as shown in fig. 1 to 4, the outer tube 11 is provided in a hollow tubular structure with both ends open.

Preferably, as shown in fig. 2 and 3, the outer tube 11 is provided in a thin shell structure to reduce the weight of the outer tube 11.

Preferably, as shown in fig. 1 to 4, a first through hole 114 is provided on an outer diameter of the outer tube 11 near the first opening 112, so that the gas in the first receiving chamber 111 is discharged from the first through hole 114 when the micro-needle unit 12 moves.

As shown in fig. 2 to 4, the first push rod 13 includes a first connecting portion 131, one end of which is connected to the microneedle unit 12, and a matching portion 132 connected to the other end of the first connecting portion 131; the cross section of the fitting portion 132 is provided in a non-circular shape; the second opening 113 is configured to fit with the mating portion 132 (shown in fig. 6 and 7). Therefore, when the micro-needle unit 12 is pushed and pulled by the first push rod 13, and the micro-needle unit 12 and the first push rod 13 move relative to the outer tube 11, the push rod cannot rotate relative to the outer tube 11, and at the moment, the micro-needle unit 12 cannot rotate relative to the outer tube 11, so that the stability of the effect of repeatedly knocking the body surface of the user by the micro-needle unit 12 is ensured. Preferably, as shown in fig. 4, the first groove 1311 is integrally formed or machined on the outer diameter of the fitting part 132, so that the weight of the fitting part 132 can be reduced and the strength of the fitting part 132 can be ensured.

Preferably, the first push rod 13 is detachably and non-rotatably connected with the micro needle unit 12. Thus, when the microneedle unit 12 is damaged or another type of microneedle unit 12 needs to be replaced, the microneedle unit 12 can be detached from the first pushing rod 13 and replaced with a new or another type of microneedle unit 12; meanwhile, because the first push rod 13 is non-rotatably connected with the micro-needle unit 12, the micro-needle unit 12 cannot rotate relative to the first push rod 13 in the using process, so that the stability of the effect of repeatedly knocking the body surface of the user by the micro-needle unit 12 is ensured.

Fig. 2 to 4 show a specific implementation manner of the detachable and non-rotatable connection between the first push rod 13 and the micro needle unit 12, at least one first buckle 133 is connected or processed on an outer surface of the first connection portion 131, a first snap ring 121 adapted to the first buckle 133 is processed at a position on the micro needle unit 12 corresponding to the first buckle 133, and the first push rod 13 is connected with the first snap ring 121 of the micro needle unit 12 through the first buckle 133 arranged on the first connection portion 131 in a snap-fit manner. Specifically, the microneedle unit 12 is provided with a fourth accommodating cavity 127 adapted to the first connecting portion 131 and a fourth opening 128 for communicating the fourth accommodating cavity 127 with the outside, and the first snap ring 121 is disposed on the side wall of the microneedle unit 12 and communicates the fourth accommodating cavity 127 with the outside. When the first connecting portion 131 is connected to the micro-needle unit 12, the first connecting portion 131 is firstly extended into the fourth accommodating cavity 127 from the fourth opening 128 until the first buckle 133 on the first connecting portion 131 is clamped in the first snap ring 121, so that the first push rod 13 and the micro-needle unit 12 are detachably connected, and the two can not rotate relatively.

Preferably, the first catch 133 is provided discontinuously on the outer surface of the first connection portion 131. Specifically, as shown in fig. 4, the first connection portion 131 is shaped as a flat-long strip structure, and the first fasteners 133 are disposed on one set of opposite side surfaces of the first connection portion 131.

In order to reduce the weight of the micro needle unit 12 and reduce the operation strength of an operator moving the micro needle unit 12, as shown in fig. 2 to 5, the micro needle unit 12 includes a first seat 122 and a second seat 123 detachably connected to each other, and a micro needle 124, wherein the first seat 122 is detachably connected to the first push rod 13, a second accommodating cavity 125 for accommodating the second seat 123 is integrally formed or machined on the first seat 122, and a second through hole 126 for communicating the second accommodating cavity 125 with the first accommodating cavity 111 is machined on a side wall of the first seat 122; the microneedles 124 are mounted on the second housing 123. Since the second accommodating cavity 125 is formed in the first seat 122, the weight of the microneedle unit 12 is reduced, and the operation strength of an operator for moving the microneedle unit 12 is reduced; moreover, since the sidewall of the second accommodating cavity 125 is provided with the second through hole 126 for communicating the second accommodating cavity 125 with the first accommodating cavity 111, when the microneedle unit 12 extends out of the outer tube 11, the compressed gas in the second accommodating cavity 125 can be discharged through the second through hole 126, so as to reduce the resistance of the microneedle 124 extending out of the outer tube 11. Therefore, the micro-needle can be repeatedly pushed and pulled by the first push rod 13, so that the micro-needle repeatedly knocks the body surface of a user, the skin of the user can more easily absorb nutrient substances in the skin care product, and the beautifying effect is achieved.

Specifically, as shown in fig. 5, the fourth accommodating cavity 127, the fourth opening 128 and the first snap ring 121 are disposed on the first seat 122.

Specifically, the first seat 122 and the second seat 123 are connected by a snap fit, so that an external tool is not needed in the process of connecting or detaching the first seat and the second seat, and the operation is convenient and fast.

Preferably, as shown in fig. 2 to 4, the micro-needle unit 12 further includes a first elastic member 14; the outer tube 11 is further integrally formed or machined with a third accommodating cavity 115 for accommodating the first elastic component 14 and a third opening 116 for communicating the third accommodating cavity 115 with the outside, and the third accommodating cavity 115 is communicated with the first accommodating cavity 111 through the second opening 113; one end of the fitting part 132 away from the first connecting part 131 is provided with a supporting part 134, and the diameter of the supporting part 134 is larger than that of the fitting part 132 and smaller than that of the third opening 116 and the cross section of the third accommodating cavity 115, so that the supporting part 134 can move into the third accommodating cavity 115 from the third opening 116; the first elastic member 14 is disposed on a side of the supporting portion 134 facing the first connecting portion 131, a diameter of the first elastic member 14 is larger than a diameter of the second opening 113, one end of the first elastic member 14 abuts against the supporting portion 134, and the other end abuts against the bottom 218 of the third accommodating chamber 115 (i.e., abuts against the outer tube 11); the first elastic member 14 has an extended state when not subjected to an external pressure, in which the micro-needle unit 12 is protruded from the first opening 112, and a compressed state corresponding to when subjected to a pressure of the support portion 134, in which the micro-needle unit 12 is retracted into the first accommodation chamber 111. Therefore, the first push rod 13 can drive the microneedle unit 12 to extend out of the outer tube 11 by applying pressure to the first push rod 13, and the supporting part 134 of the first push rod 13 presses the first elastic component 14 on the outer tube 11 while the first push rod 13 moves, so that the first elastic component 14 is in a compressed state; when the pressure applied to the first push rod 13 is removed, the first elastic component 14 returns to the extended state from the compressed state, and in the process that the first elastic component 14 returns to the extended state, the microneedle unit 12 is driven to automatically retract into the first accommodating cavity 111. Therefore, an operator only needs to apply pressure to the first push rod 13, and does not need to apply pulling force to the first push rod 13, and the operation is convenient.

Specifically, the first elastic member 14 is a compression spring, which is sleeved on the outer side of the matching portion 132.

Preferably, as shown in fig. 1 to 4, the outer diameter of the outer tube 11 is further processed with a friction structure 117 for increasing a friction force on an outer surface thereof. Thus, when the operator uses the microneedle unit 12, the operator can hold the microneedle unit with one hand on the surface of the outer tube 11 on which the friction structure 117 is provided, and push the first push rod 13 with the other hand to move it relative to the outer tube 11. Due to the friction structure 117 arranged on the outer surface of the outer tube 11, the outer tube 11 can be prevented from sliding out of the hand of the operator during use, and the stability of the micro-needle unit 12 in use is ensured.

Specifically, the friction structure 117 may be a protrusion 322 or a groove.

In other embodiments, the microneedles 124 may also employ a massage head (not shown).

Fig. 8 to 12 schematically show a microneedle cosmetic pen according to an embodiment of the present invention.

As shown in fig. 9 and 10, the microneedle cosmetic pen includes the aforementioned microneedle unit 12; the device also comprises a shell 20, a moving mechanism 30 and a driving device 40 which are arranged on the shell 20; the outer tube 11 is connected with a housing 20, and the housing 20 is convenient for a user to hold or is used for fixing on other external components; the moving mechanism 30 is configured to move the first push rod 13 back and forth under the driving of the driving device 40. Thus, the driving device 40 can drive the moving mechanism 30 to alternately extend the first pushing rod 13 and the micro-needle unit 12 connected to the pushing rod out of the outer tube 11 (as shown in fig. 10) or retract the micro-needle unit into the outer tube 11 (as shown in fig. 9).

As shown in fig. 9 to 12, the outer shell 20 and the outer tube 11 are connected to each other by a second snap 210, the outer diameter of the end portion of the outer shell 20 facing the outer tube 11 is connected to or formed with a receiving cavity for receiving the end portion of the outer shell 20 and a shaped hole 119 for communicating the receiving cavity with the outside, the shaped hole 119 is adapted to the outer shell 20 provided with the second snap 210, a second snap ring 118 adapted to the second snap 210 is further formed at a position of the outer shell 20 corresponding to the second snap 210, and the second snap ring 118 is communicated with the shaped hole 119. When the housing 20 is connected to the outer tube 11, the end of the housing 20 provided with the second clip 210 is firstly extended into the accommodating cavity from the irregular hole 119, until the second clip 210 moves to the position of the second clip ring 118, and the housing 20 is connected to the second clip ring 118 of the outer tube 11 by the second clip 210 in a snap-fit manner.

Preferably, as shown in fig. 11 and 12, the shape of the shaped hole 119 corresponding to the second snap 210 is offset from the second snap ring 118, that is, the shape of the shaped hole 119 corresponding to the second snap 210 is not arranged on the same axis as the second snap ring 118. Therefore, when the second catch 210 moves to the depth of the second snap ring 118, the housing 20 needs to rotate relative to the outer tube 11 until the second catch 210 is aligned with the second snap ring 118, and the second catch 210 is engaged with the second snap ring 118, so that the outer tube 11 and the housing 20 need to move relative to each other and rotate relative to each other, thereby preventing the housing 20 and the outer tube 11 from being detached due to inadvertent movement or rotation, and ensuring the stability of connection between the two.

Specifically, as shown in fig. 9 to 12, the first push rod 13 further includes a first connecting rod 135 and a limiting portion 136; the position-limiting portion 136 is connected to one end of the supporting portion 134 far from the first connecting portion 131 through a first connecting rod 135, and the diameter of the position-limiting portion 136 is larger than that of the third opening 116. Thereby, it is possible to avoid that the first push rod 13 moves into the third accommodating chamber 115 under the urging of the moving mechanism 30, resulting in that the moving mechanism 30 is not liable to urge the first push rod 13.

Preferably, as shown in fig. 9 and 10, the moving mechanism 30 is connected to the first push rod 13. Therefore, the micro-needle unit 12 connected to the first pushing rod 13 can be driven to retract into the first accommodating cavity 111 by the moving mechanism 30, and the first pushing rod 13 cannot retract into the first accommodating cavity 111 normally because the first elastic part 14 cannot recover the extended state due to being blocked in the process of recovering the extended state is avoided.

Preferably, as shown in fig. 9 to 12, the microneedle cosmetic pen further includes a mounting part 33, and the first push rod 13 is mounted on the moving mechanism 30 through the mounting part 33. The mounting portion 33 may be provided with a connection structure (e.g., a screw thread, a slot, etc.) for detachable connection with the first push rod 13, or the first push rod 13 may be non-detachably mounted on the mounting portion 33. Specifically, the mounting portion 33 is provided with a first engaging groove 35 for engaging with the first push rod 13, an end portion of the limiting portion 136 of the first push rod 13, which is away from the first connecting portion 131, is connected to a second connecting portion 138 through a second connecting rod 137, a position of the second connecting portion 138, which corresponds to the first engaging groove 35, is provided with a third engaging portion 138, the third engaging portion is adapted to the first engaging groove 35, and the second connecting portion 138 is engaged with the first engaging groove 35 of the mounting portion 33 through the third engaging portion.

The moving mechanism 30 is specifically realized as shown in fig. 9 to 12, and the moving mechanism 30 includes a moving member 31, a connecting mechanism, a first rotating member 32, and a slide rail 211 and a slide block 312 which are adapted to each other; the sliding rail 211 can be formed, machined or connected to the housing 20 in an integrated manner, the sliding rail 211 can be formed in a groove manner or a rib manner, and is arranged along the moving direction of the first push rod 13, a sliding block 312 is adapted in the sliding rail 211, the moving part 31 is arranged on the sliding block 312, the mounting part 33 is arranged on the moving part 31, and the moving part 31 can drive the mounting part 33 to reciprocate relative to the housing 20; the connecting mechanism is rotatable, the first rotating member 32 is arranged on the moving member 31 through the connecting mechanism, so that the first rotating member 32 can rotate relative to the moving member 31, and when the first rotating member 32 rotates, pushing force and pulling force can be alternately applied to the moving member 31 along the moving direction of the moving member 31; the drive device 40 is an electric motor, the rotating shaft 41 of which is coaxially connected to the first rotating member 32, for example, by a coupling. The motor drives the first rotating member 32 to rotate, because the moving member 31 is arranged on the housing 20 through the sliding block 312, the first rotating member 32 does not drive the moving member 31 to rotate, but rotates relative to the moving member 31, when the first rotating member 32 rotates relative to the moving member 31, the first rotating member 32 can apply a pushing force and a pulling force along the extending direction of the sliding rail 211 to the moving member 31 alternately, so as to drive the moving member 31 to drive the mounting portion 33, the first push rod 13 and the micro-needle unit 12 to move back and forth, so that the micro-needle unit 12 alternately extends out of the outer tube 11 and retracts into the outer tube 11, and the moving frequency of the moving member 31 can be adjusted by adjusting the rotating.

Preferably, with continued reference to fig. 9 to 12, the rotating direction of the first rotating member 32 is perpendicular to the moving direction of the moving member 31, so as to reduce the components of the pushing force and the pulling force of the first rotating member 32 on the moving member 31.

Embodiment of the connecting mechanism as shown in fig. 9, 10 and 12, the connecting mechanism includes a first flange 321 with an oblique cylindrical shape and a second groove 310 integrally formed or machined on the moving member 31 to match the first flange 321; the first flange 321 is fixedly connected to one end of the first rotating member 32 facing the mounting portion 33, and may also be formed by integral molding, welding or machining, and the axis of the first flange 321 is coaxial with the rotating shaft 41 of the first rotating member 32; the moving member 31 is disposed on one side of the first flange 321, and the second groove 310 is also engaged with one side of the first flange 321. Since the moving member 31 is fitted on the first flange 321 through the second groove 310 and is located at one side of the first flange 321. When the position of the end surface of the first flange 321 farthest from the mounting portion 33 abuts against the side wall of the second groove 310, and the moving mechanism 30 is in the first state (as shown in fig. 9), when the first rotating member 32 continues to rotate, the end surface of the first flange 321 facing the mounting portion 33 abuts against the side wall of the second groove 310 close to the mounting portion 33, so as to drive the moving member 31 to move away from the first rotating member 32; when the position of the end surface of the first flange 321 closest to the mounting portion 33 abuts against the side wall of the second groove 310, the moving mechanism 30 is in the second state (as shown in fig. 10), and when the first rotating member 32 continues to rotate, the end surface of the first flange 321 away from the mounting portion 33 abuts against the side wall of the second groove 310 away from the mounting portion 33, so as to drive the moving member 31 to move towards the direction of the first rotating member 32. Thereby driving the moving member 31 and the mounting portion 33 to reciprocate.

Specifically, as shown in fig. 9 to fig. 12, the moving member 31 is provided with a second rotating member 311, the second rotating member 311 is rotatably disposed on the moving member 31, wherein the second rotating member 311 is rotatably disposed on the moving member 31 in a manner commonly used in the prior art, for example, a connecting shaft is connected to the moving member 31, and the second rotating member 311 is sleeved on the connecting shaft, so as to rotatably connect the second rotating member 311; the second rotating members 311 are two, the rotating shafts of the second rotating members 311 are perpendicular to the rotating shaft of the first rotating member 32, and the two second rotating members 311 and the moving member 31 enclose a second groove 310. Due to the second rotating member 311, when the first rotating member 32 rotates, the first flange 321 abuts against the outer periphery of the second rotating member 311, and the first flange 321 rotates to drive the second rotating member 311 to rotate, so that sliding friction is converted into rolling friction, and the wear of the first flange 321 and the side wall of the second groove 310 (i.e., the outer periphery of the second rotating member 311) is reduced.

Preferably, the first rotating member 32 and the second rotating member 311 are made of a material having good wear resistance. More preferably, in order to reduce the weight of the moving mechanism 30, the first rotating member 32 and the second rotating member 311 are made of plastic having good wear resistance, such as POM (polyester) or nylon.

Preferably, as shown in fig. 9 to 12, the second rotating member 311 is disposed on the moving member 31 through a sliding block 312, and the sliding block 312 may be integrally formed or connected to the moving member 31. Therefore, the sliding block 312 can drive the second rotating member 311 and the moving member 31 to reciprocate along the extending direction of the sliding rail 211.

Further, as shown in fig. 9, 11 and 12, a columnar protrusion 322 is coaxially connected to a side of the first flange 321 facing the mounting portion 33, wherein the protrusion 322 may be integrally formed, machined or connected to the first flange 321; the outer circumference of the protrusion 322 is in clearance fit with the moving member 31, and in particular, the outer circumference of the protrusion 322 may be in clearance fit with the moving member 31, the second rotating member 311, or a connecting shaft for mounting the second rotating member 311. Because the outer periphery of the protrusion 322 is in clearance fit with the moving member 31, when the first rotating member 32 deflects, the protrusion 322 will abut against the moving member 31, that is, the moving member 31 will limit the offset and deflection of the protrusion 322, thereby preventing the first rotating member 32 from deflecting during the rotating process. Preferably, as shown with continued reference to fig. 9, 11 and 12, in order to reduce the weight of the first flange 321, a fourth groove 323 is integrally formed or machined on the first flange 321.

Preferably, as shown in fig. 2 and 3, a fifth accommodating chamber for accommodating the mounting portion 33, a fifth opening 216 for communicating the mounting portion 33 with the moving member 31, and a sixth opening 23 for communicating the mounting portion 33 with the outside are integrally formed or machined on the housing 20, the fifth accommodating chamber has a non-circular cross section, and the fifth opening 216 is disposed opposite to the sixth opening 23; the mounting portion 33 is fitted with the fifth accommodating chamber. When moving member 31 drives installation department 33 reciprocating motion, because the cross section that the fifth held the chamber is non-circular, and installation department 33 holds the chamber adaptation with the fifth, installation department 33 can not hold the chamber rotation relatively the fifth in the in-process that holds the chamber removal relatively the fifth to guarantee installation department 33 steady movement. Specifically, the specific implementation manner that the cross section of the fifth accommodating cavity is non-circular is that a non-circular arc surface (not shown in the figure) is arranged on the cavity wall of the fifth accommodating cavity.

In other embodiments, the difference from the previous embodiments is that the connection mechanism is a threaded connection, such as a common ball screw nut structure, in which case the first rotating member 32 is a ball screw, and the moving member 31 is a nut, and in which case, the second groove 310, the second rotating member 311, the first flange 321, the protrusion 322, and the third groove 316 are not required to be provided; the nut is adapted to the ball screw and is disposed on the base body through the slider 312, and the mounting portion 33 is disposed on the nut in the same manner as described above, which is not described herein again. By rotating the ball screw, the nut and the mounting portion 33 are driven to reciprocate along the extending direction of the ball screw, and the change of the moving direction can be realized by changing the turning direction of the ball screw (not shown in the figure).

Other modes in prior art can also be adopted to rotatable connection structure realize as long as moving member 31 and first rotating member 32 are connected through rotatable coupling mechanism, and coupling mechanism can be when first rotating member 32 rotates, can all be in along the moving direction of moving member 31 exerting thrust and tensile rotatable connection structure in turn to moving member 31 the utility model discloses a protection scope.

Further, as shown in fig. 9 to 12, the microneedle cosmetic pen further includes a second elastic component 50, the moving member 31 includes a second push rod 314 and a second flange 315 disposed on the second push rod 314, wherein the second flange 315 is integrally formed, machined or connected to one end of the second push rod 314 and is disposed at an end of the second push rod 314 away from the mounting portion 33, the mounting portion 33 is integrally formed, detachably connected or fixedly connected to the second push rod 314, the second flange 315 is disposed on the slider 312, or the second flange 315 and the slider 312 are integrally formed; a sixth accommodating cavity 217 for accommodating the moving member 31, the sliding rail 211 and the sliding block 312 is integrally formed or machined on the housing 20, the sixth accommodating cavity 217 is a counter bore, and the sixth accommodating cavity 217 is communicated with the fifth accommodating cavity through a fifth opening 216; one end of the second elastic member 50 abuts on the bottom 218 of the sixth accommodation chamber 217, and the opposite end abuts on the side of the second flange 315 facing the mounting portion 33. Therefore, on one hand, when the moving member 31 drives the mounting portion 33 to move in a direction away from the first rotating member 32, the second elastic member 50 can provide a buffering and damping effect for the movement of the moving member 31; on the other hand, when the moving member 31 moves toward the first rotating member 32, the second elastic member 50 may also serve as a further power source for moving the moving member 31.

Preferably, with continued reference to fig. 9-12, the mounting portion 33 is removably and fixedly coupled to an outer side of the second push rod 314; the fifth accommodating cavity comprises a push rod cavity 212 matched with the second push rod 314 and a mounting cavity 213 matched with the mounting part 33, which are communicated with each other, the push rod cavity 212 is communicated with the sixth accommodating cavity 217 through the first opening 112, the mounting cavity 213 is communicated with the outside through the sixth opening 23, and the push rod cavity 212 and the mounting cavity 213 are integrally formed or machined on the shell 20. Preferably, the diameter of the pushrod cavity 212 is larger than the diameter of the mounting cavity 213 to form a first step 214 at the junction of the two to limit the extreme position of movement of the second pushrod 314 toward the first rotating member 32. Therefore, when the second push rod 314 drives the mounting portion 33 to move in the direction of the first rotating member 32, the mounting portion 33 is prevented from compressing the second elastic member 50. Specifically, the second elastic member 50 is a member having elasticity, such as a compression spring, which is commonly used in the art.

When the mounting portion 33 is fixedly connected to the outside of the second push rod 314, preferably, the mounting portion 33 is detachably connected to the second push rod 314, for example, it may be in a threaded connection or a snap connection, where a specific implementation manner of the snap connection is as shown in fig. 9 to 12, a snap portion 317 is integrally formed, processed or connected to a free end of the second push rod 314, and a second snap groove 34 for snap connection with the snap portion 317 is integrally formed or processed on the mounting portion 33. Preferably, a third groove 316 is integrally formed or machined on the outer diameter of the second push rod 314 in order to reduce the weight of the second push rod 314.

In order to facilitate the installation of the motor, the moving member 31, the first rotating member 32, the moving mechanism 30, and the like, as shown in fig. 9 to 12, the first casing 21 and the second casing 22 detachably connected to each other by the housing 20 are provided, wherein the first casing 21 is integrally formed with or formed with a seventh opening 219 for taking out the motor, the moving member 31, the first rotating member 32, and the like from the sixth accommodation chamber 217. Thus, the first rotating member 32 can be driven by the motor to rotate, so as to drive the mounting portion 33 to reciprocate; moreover, since the motor can realize high-speed operation, the reciprocating frequency of the mounting part 33 can be greatly improved, and an SZ series miniature servo motor can be selected as required, so that the volume of the microneedle cosmetic pen cannot be increased, and the cost of the microneedle cosmetic pen cannot be greatly increased.

In the utility model, the connection can adopt the detachable connection or the non-detachable connection in the prior art, wherein, the detachable connection can adopt the common clamping connection, the threaded connection and the like in the prior art; the non-detachable connection can for example adopt welding, gluing and the like commonly used in the prior art, the utility model discloses do not limit to the concrete implementation of connection.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims (12)

1. A skin microneedle assembly, comprising:

a microneedle unit (12);

the micro-needle unit comprises an outer tube (11) provided with a first accommodating cavity (111) for accommodating the micro-needle unit (12), wherein a first opening (112) and a second opening (113) for communicating the first accommodating cavity (111) with the outside are respectively arranged at two ends of the outer tube (11), and a first through hole (114) for communicating the first accommodating cavity (111) with the outside is arranged on the side wall of the outer tube;

the first push rod (13) is connected to the micro-needle unit (12), the free end of the first push rod (13) extends out of the outer tube (11) from the second opening (113) and is arranged to move back and forth along the axial direction of the first push rod so as to drive the micro-needle unit (12) to extend out of the first opening (112) or move back into the first accommodating cavity (111).

2. The skin microneedle assembly of claim 1, wherein the first push rod (13) comprises a first connection portion (131) having one end connected to the microneedle unit (12) and a fitting portion (132) connected to the other end of the first connection portion (131);

the cross section of the fitting part (132) is provided in a non-circular shape;

the second opening (113) is provided to fit with the fitting portion (132).

3. Skin microneedle assembly according to claim 2, characterized in that the first push rod (13) is detachably and non-rotatably connected with the microneedle unit (12).

4. The skin microneedle assembly of claim 3, wherein the first connecting portion (131) is provided with a first buckle (133), the microneedle unit (12) is provided with a first snap ring (121) adapted to the first buckle (133), and the first push rod (13) is connected with the first snap ring (121) of the microneedle unit (12) in a snap-fit manner through the first buckle (133) arranged on the first connecting portion (131).

5. Skin microneedle assembly according to any of claims 2 to 4, characterized in that the microneedle unit (12) comprises a first holder (122) and a second holder (123) detachably connected to each other, and microneedles (124), wherein,

the first seat body (122) is connected with the first push rod (13), the first seat body (122) is provided with a second accommodating cavity (125) for accommodating the second seat body (123), and the side wall of the first seat body is provided with a second through hole (126) for communicating the second accommodating cavity (125) with the first accommodating cavity (111);

the micro-needle (124) is arranged on the second seat body (123).

6. The skin microneedle assembly of claim 5, further comprising a first resilient member (14);

the outer tube (11) is also provided with a third accommodating cavity (115) for accommodating the first elastic component (14) and a third opening (116) for communicating the third accommodating cavity (115) with the outside, and the third accommodating cavity (115) is communicated with the first accommodating cavity (111) through the second opening (113);

a supporting part (134) is arranged at one end, far away from the first connecting part (131), of the matching part (132), and the diameter of the supporting part (134) is larger than that of the matching part (132) and smaller than that of the third opening (116);

the first elastic component (14) is arranged on one side of the supporting part (134) facing the first connecting part (131), one end of the first elastic component (14) abuts against the supporting part (134), and the other end of the first elastic component (14) abuts against the outer pipe (11);

the first elastic member (14) has an extended state in which the microneedle unit (12) protrudes from the first opening (112) and a compressed state in which the microneedle unit (12) is retracted into the first accommodation chamber (111).

7. Skin microneedle assembly according to claim 6, characterized in that the outer diameter of the outer tube (11) is further provided with friction structures (117) for increasing the friction force on its outer surface.

8. A microneedle cosmetic pencil comprising the skin microneedle assembly of any one of claims 1 to 5;

the device also comprises a shell (20), a moving mechanism (30) and a driving device (40), wherein the moving mechanism (30) and the driving device are arranged on the shell (20);

the outer tube (11) is connected with the shell (20);

the moving mechanism (30) is arranged to drive the first push rod (13) to move in a reciprocating manner under the driving of the driving device (40).

9. The microneedle cosmetic pen according to claim 8, wherein the moving mechanism (30) is connected with the first push rod (13).

10. A microneedle cosmetic pencil comprising the skin microneedle assembly of any one of claims 6 to 7;

the device also comprises a shell (20), a moving mechanism (30) and a driving device (40), wherein the moving mechanism (30) and the driving device are arranged on the shell (20);

the outer tube (11) is connected with the shell (20);

the moving mechanism (30) is arranged to drive the first push rod (13) to move in a reciprocating manner under the driving of the driving device (40).

11. The microneedle cosmetic pen according to claim 10, wherein the moving mechanism (30) is connected with the first push rod (13).

12. The microneedle cosmetic pencil of claim 11, wherein the first push rod (13) further comprises a first connecting rod (135) and a stopper (136); the limiting part (136) is connected to one end, far away from the first connecting part (131), of the supporting part (134) through the first connecting rod (135), and the diameter of the limiting part (136) is larger than that of the third opening (116).

Images