Portable mini facial gun

Abstract

Provided is a portable mini facial gun. 【Solution means】It includes a housing 100 provided with a cavity inside, a motor mounted inside the housing with an eccentric wheel connected to the rotating shaft, a transmission mechanism slidably mounted inside the housing and arranged to be driven by the eccentric wheel to reciprocate together with the massage head 10, and a power source for supplying power. A corner is formed between the motor and the transmission mechanism, and the power source is attached to the corner inside the housing so that the housing is flat. High integration and extreme miniaturization of the facial gun product are realized, significantly improving portability, operability, and comfort during use.

Description

Technical Field

[0001] The present invention belongs to the technical field of fascia guns, and particularly relates to a portable mini fascia gun.

Background Art

[0002] As a muscle massage device, a fascia gun can effectively assist muscle relaxation after high-intensity exercise and is popular among fitness enthusiasts and outdoor sports enthusiasts.

[0003] A fascia gun mainly reciprocates a massage head by the cooperation of a motor and a transmission mechanism according to the crank-slide principle. Due to technical reasons and limitations of the operating principle, in the internal structure of a fascia gun, the motor needs to be arranged perpendicular to the transmission mechanism. On the one hand, a handle is required for easy gripping by the user. On the other hand, in order to improve the utilization rate of the internal space of the handle and extend the continuous usage time of the fascia gun, all fascia guns in the prior art have a corner structure.

[0004] With the development of fascia guns, fitness enthusiasts do not want to use shared fascia guns in the gym for hygienic reasons, and outdoor enthusiasts also hope to reduce the weight of the fascia gun for easy carrying. Portable mini fascia guns have begun to become popular in the market. Such fascia guns reduce the size of the fascia gun to less than one-third of that of a normal fascia gun by means such as reducing the size of the battery and the transmission mechanism.

[0005] However, the layout of conventional fascia guns has already formed technical maturity. Since a mini fascia gun has a small volume, in this case, the handle provided in the corner layout is much smaller than the size of the palm, and such a layout is not only difficult to grip but also causes waste of space.

Summary of the Invention

[0006] In view of the problems of the prior art, the object of the present invention is to provide a portable mini fascia gun that can solve the problems that the internal structure of the conventional fascia gun is complex, the space requirements of the housing are large, and as a result, the overall volume of the fascia gun is large and it is difficult to carry.

[0007] To achieve the above object, the present invention adopts the following technical solutions. A housing provided with a cavity inside, A motor mounted inside the housing, with an eccentric wheel connected to the rotating shaft, A transmission mechanism slidably mounted inside the housing and driven by the eccentric wheel to reciprocate together with the massage head, And a power supply for supplying power, A corner is formed between the motor and the transmission mechanism, and the power supply is mounted at the corner inside the housing so that the housing is flat. A portable mini fascia gun.

[0008] Also, a truncated eccentric cone is provided on the eccentric wheel, and the central axis of the truncated eccentric cone is offset from the output shaft of the motor. In the axial projection direction, the output shaft of the motor is located within the contour of the outer edge of the truncated eccentric cone, so that the output shaft of the motor can extend into the truncated eccentric cone.

[0009] Also, a round groove is provided at one end of the transmission rod, one end of the transmission rod is fitted outside the truncated eccentric cone through the round groove, and a bearing is provided between the truncated eccentric cone and the transmission rod.

[0010] Also, the motor is an outer rotor motor, and the motor is mounted inside the housing through a fixed plate. If the maximum radius of the outer wall of the round groove is r, the eccentricity of the truncated eccentric cone is d, and the radius of the fixed plate is R, then The sum of the maximum radius r of the outer wall of the round groove and the eccentricity d of the eccentric frustum is made smaller than the radius R of the fixed plate so that the outer diameter of the circumferential displacement locus of the transmission rod is smaller than the outer diameter of the fixed plate.

[0011] In addition, a first cushion pad is provided on the outer wall of the fixed plate, and the first cushion pad is located between the fixed plate and the housing.

[0012] In addition, the transmission mechanism includes a transmission rod and a sleeve. Both ends of the transmission rod are hinged to the sleeve and the eccentric wheel respectively, and the hinged joint of the transmission rod and the sleeve is located inside the sleeve.

[0013] In addition, a positioning hole is provided on the side wall of the sleeve, a through hole is provided on the transmission rod, and a latch is provided in the positioning hole and the through hole to realize the hinged connection between the transmission rod and the sleeve.

[0014] In addition, a bush is provided between the transmission rod and the sleeve, and the bush is in close contact with the inner wall of the sleeve. The bush extends into the through hole, and the bush is located between the inner wall of the through hole and the latch.

[0015] In addition, a slide sleeve is provided in the housing. The sleeve is located inside the slide sleeve, and a silicone sleeve is provided between the slide sleeve and the housing.

[0016] In addition, it further includes a control panel. The control panel is located above the transmission mechanism, and the control panel is provided with an operation button and a battery level display lamp.

[0017] According to the technical solution of the present invention, the power supply is horizontally placed at the corner of the motor and the transmission mechanism, effectively utilizing the originally complex and difficult-to-use gap, improving the overall utilization rate of the space inside the housing, and meeting the needs of miniaturization of portable devices. The horizontal layout breaks the technical maturity of the conventional corner-type structure, avoids the redundancy of the handle, makes the overall shape more compact, contributes to making a mini and lightweight fascia gun, and is suitable for outdoor use and carrying. The design of the conventional handle structure is abolished, solving the problem that the handle of the small fascia gun is too short to be gripped, improving the portability and operability of the entire device, and improving the user experience. Other features and advantages of the present invention will be described in detail in the following description. Also, some of them will be apparent from the specification or understood by implementing the present invention. The objectives and other advantages of the present invention are realized and obtained by the structure particularly pointed out in the description of the specification and the accompanying drawings.

Brief Description of the Drawings

[0018] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings so that the above advantages of the present invention become clearer.

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Embodiments for Carrying out the Invention

[0019] Hereinafter, embodiments of the present invention will be described in detail. The examples of the embodiments are shown in the accompanying drawings, and the same or similar reference numerals in the drawings always represent the same or similar parts or parts having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used for explaining the present invention and should not be understood as limiting the present invention.

[0020] In the description of the present invention, the directions or positional relationships indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the directions and positional relationships shown in the accompanying drawings, and are only for the convenience of description and simplification of the description of the present invention, and do not indicate or imply that the devices or parts mentioned must have a specific direction and be configured or operated in a specific direction, so it should not be understood as a limitation to the present invention.

[0021] Also, the terms "first" and "second" are only for the purpose of description and should not be understood as indicating or suggesting relative importance or implicitly indicating the quantity of the technical features indicated. Thus, the features limited as "first" and "second" can include one or more of the said features explicitly or implicitly. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

[0022] In the embodiments of the present invention, unless otherwise specified, terms such as "attach", "connect", "join", "fix", etc. should be understood in a broad sense. For example, they may be fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly joined, indirectly joined through an intermediate medium, or may be a communication inside two components or an interaction relationship between two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to specific situations.

[0023] As shown in FIGS. 1 to 3, a portable mini-facial gun includes a housing 100 provided with a cavity inside, a motor 200 mounted inside the housing 100 and having an eccentric wheel 300 connected to a rotating shaft, a transmission mechanism 400 slidably mounted inside the housing 100 and arranged to reciprocate together with a massage head 10 driven by the eccentric wheel 300, and a power supply 500 for supplying power, A corner is formed between the motor 200 and the transmission mechanism 400, and the power supply 500 is mounted at the corner inside the housing 100 so that the housing 100 is flat. Different from the prior art, the present invention optimizes the overall structural layout, designs the motor 200 and the transmission mechanism 400 into a corner structure with a certain angle therebetween, and installs the power supply 500, which is a module, at this corner. By this horizontal arrangement method, the design inertia of the vertical handle and the longitudinal battery in the conventional facial gun is broken. On the premise that the functions of the internal components are fully ensured, the space utilization rate inside the housing 100 is greatly increased, the length of the whole device is effectively shortened, and it contributes to the development of the overall shape of the device in the direction of being flat and having a shortened minor axis, making it more suitable for carrying. [[ID=********]]

[0024] [[ID=********]] As shown in FIGS. 2 to 6, in this embodiment, an eccentric frustum 310 is provided on the eccentric wheel 300, and the central axis of the eccentric frustum 310 is offset from the output shaft 210 of the motor 200. In the axial projection direction, the output shaft 210 of the motor 200 is located within the contour of the outer edge of the eccentric frustum 310, so that the output shaft 210 of the motor 200 can extend into the eccentric frustum 310. The conventional fascia gun adopts the eccentric wheel 300 structure, so it is necessary to provide the bearing 412 above the rotating shaft of the motor 200, occupying a relatively large vertical space. This structural design is intended to minimize the occupied space in the axial direction of the output shaft 210 of the motor 200 and the eccentric wheel 300 by vertically overlapping them structurally while ensuring the complete eccentric transmission function. A high degree of integration is achieved by the overlapping method by insertion. The overall dimensions of the fascia gun are further reduced, contributing to the realization of the ultra-small design of the product and meeting the trend of portability.

[0025] In this embodiment, a round groove 411 is provided at one end of the transmission rod 410, and one end of the transmission rod 410 is fitted outside the eccentric frustum 310 through the round groove 411, and a bearing 412 is provided between the eccentric frustum 310 and the transmission rod 410. According to this aspect, by attaching the eccentric frustum 310 to the output shaft 210 of the motor 200 and offsetting its central axis from the rotating shaft of the motor 200, sufficient space is provided in the horizontal direction, direct interference between the bearing 412 and the shaft of the motor 200 is avoided, and at the same time, the overall height dimension of the fascia gun is reduced.

[0026] In this aspect, a round groove 411 is provided at one end of the transmission rod 410. By fitting the round groove 411 outside the eccentric frustum 310 via the bearing 412, the position of the bearing 412 is optimized, and it is no longer necessary for it to be higher than the rotation shaft of the motor 200. The overall height is reduced, and the space utilization rate is maximized. In the axial projection direction, the output shaft 210 of the motor 200 is located within the contour of the eccentric frustum 310. That is, the shaft of the motor 200 can be partially fitted into the eccentric frustum 310, reducing the height occupied by the bearing 412 with respect to the shaft of the motor 200 and making the overall structure more compact.

[0027] In this embodiment, the motor 200 is an outer rotor motor, and the motor 200 is mounted in the housing 100 via the fixed disk 220. Let the maximum radius of the outer wall of the round groove 411 be r, the eccentricity of the eccentric frustum 310 be d, and the radius of the fixed disk 220 be R. The sum of the maximum radius r of the outer wall of the round groove 411 and the eccentricity d of the eccentric frustum 310 is made smaller than the radius R of the fixed disk 220 so that the outer diameter of the circumferential displacement locus of the transmission rod 410 is smaller than the outer diameter of the fixed disk 220.

[0028] Since the sum of the maximum radius of the outer wall of the circular groove 411 and the eccentricity distance is smaller than the radius of the fixed disk 220, it is ensured that the movement locus of the transmission rod 410 does not exceed the contour of the outer wall of the fixed disk 220, and the fascia gun is miniaturized. The eccentric frustum 310 is attached to the output shaft 210 of the motor 200, and its central axis is offset from the axis of the motor 200. Therefore, an eccentric movement occurs during rotation. The transmission rod 410 is fitted outside the eccentric frustum 310 through the circular groove 411, and the movement is transmitted through the bearing 412, causing the end of the transmission rod 410 to reciprocate in the horizontal direction, and finally driving the massage head 10 to perform impact massage. The parameter constraint r + d < R means that the maximum movement range of the transmission rod 410, that is, its outer diameter locus is always smaller than the radius of the fixed disk 220, ensuring proper movement within the structure and preventing it from exceeding the outer diameter of the fixed disk 220. This design makes the overall structure more compact, avoids excessive space occupation, and makes the entire device smaller and easier to carry.

[0029] In this embodiment, a first cushion pad 221 is provided on the outer wall of the fixed disk 220, and the first cushion pad 221 is located between the fixed disk 220 and the housing 100. The stator of the motor 200 is connected to the fixed disk 220, a positioning groove 110 is provided in the housing 100, and the fixed disk 220 is located in the positioning groove 110. Different from the general method in the prior art where the motor 200 is fixed to the housing 100 with metal brackets and screws, in this technical solution, without adopting the conventional screw mounting structure, by providing the positioning groove 110 in the housing 100, the fixed disk 220 can be directly inserted and positioned to achieve fastening or crimping. This method simplifies the assembly process, not only reducing the manufacturing and maintenance costs, but also effectively reducing the structural level and mounting thickness, contributing to the flat design of the entire device.

[0030] In addition, the structure of the positioning groove 110 can also avoid problems in long-term use caused by loosening of the screws while maintaining the mounting stability of the motor 200, thus improving the durability and structural reliability of the fascia gun, and further conforming to the design intentions of compactness, miniaturization, and ease of assembly of the present invention.

[0031] First, since the motor 200 generates a certain degree of vibration and noise during operation, by adding a cushion pad between the fixed plate 220 and the housing 100, the mechanical vibration caused by the high-speed rotation of the motor 200 can be effectively absorbed and alleviated, and the transmission and diffusion of the vibration to the housing 100 can be reduced, thereby achieving the purposes of vibration attenuation and noise reduction, and improving the comfort and user experience of the user during use.

[0032] Next, the cushion pad itself has a certain resilience and pressure resistance, forms a certain biasing force with the fixed plate 220 in the mounted state, improves the stability of the fixed plate 220 in the positioning groove 110, contributes to preventing loosening or displacement during long-term use, and further improves the mounting reliability and structural stability of the motor 200.

[0033] As shown in FIGS. 3 to 9, in this embodiment, the transmission mechanism 400 includes a transmission rod 410 and a sleeve 420. Both ends of the transmission rod 410 are respectively hinged to the sleeve 420 and the eccentric wheel 300. The hinge connection point between the transmission rod 410 and the sleeve 420 is located inside the sleeve 420. In a conventional fascia gun, the hinge connection between the transmission rod 410 and the sleeve 420 is mainly performed using a bearing 412 and a rotating shaft. However, in a portable fascia gun, this hinge connection method has two drawbacks. One is that in the hinge connection method using a rotating shaft, the width of the rotating shaft is large, which is disadvantageous for controlling the thickness of the portable fascia gun. The other is that due to the fixing method of the rotating shaft, the hinge connection point between the transmission rod 410 and the sleeve 420 is located at the rear end of the sleeve 420. This hinge connection structure makes the length of the sleeve 420 too long, which is disadvantageous for controlling the length of the portable fascia gun. By installing the hinge connection point between the transmission rod 410 and the sleeve 420 inside the sleeve 420, the length of the transmission path is significantly shortened, and the problem of structural redundancy caused by the conventional rotating shaft being arranged outside is avoided. The longitudinal dimension of the entire fascia gun is effectively reduced, which is suitable for the needs of a compact layout of portable products.

[0034] In this embodiment, the outer diameter of the transmission rod 410 is smaller than the inner diameter of the sleeve 420, that is, the transmission rod 410 does not cause radial interference inside the sleeve 420. Thereby, while realizing the hinge connection function, it does not inhibit the axial sliding movement of the sleeve 420. With this structure, during the swinging process in which the transmission rod 410 performs eccentric drive, the sleeve 420 can smoothly reciprocate inside the slide sleeve 450, ensuring the harmony and smoothness of the operation of the entire transmission mechanism 400.

[0035] In this embodiment, a positioning hole 421 is provided on the side wall of the sleeve 420, a through hole 413 is provided on the transmission rod 410, and a latch 430 is provided in the positioning hole 421 and the through hole 413, thereby realizing the hinge connection between the transmission rod 410 and the sleeve 420. Specifically, a positioning hole 421 for guiding the latch 430 in the radial direction is opened on the side wall of the sleeve 420. A through hole 413 is provided at a position of the transmission rod 410 corresponding to the sleeve 420, and this through hole 413 corresponds to the positioning hole 421 of the sleeve 420. In the assembly process, by simply inserting the latch 430 into the positioning hole 421 and the through hole 413 in sequence, a rotatable connection between the transmission rod 410 and the sleeve 420 can be realized.

[0036] Compared with the conventional hinge connection method using the structure of a rotating shaft or a bearing 412, the diameter of the latch 430 component can be designed to be smaller, the combination accuracy is high, the occupied space in the width direction of the hinge connection structure is effectively reduced, and it is very suitable for the structural requirements of a portable and miniaturized fascia gun. The occupied space in the width direction of the hinge connection structure is effectively reduced, and it is very suitable for the structural requirements of a portable and miniaturized fascia gun.

[0037] In this embodiment, a bush 440 is provided between the transmission rod 410 and the sleeve 420, and the bush 440 is in close contact with the inner wall of the sleeve 420. The bush 440 extends into the through hole 413, and the bush 440 is positioned between the inner wall of the through hole 413 and the latch 430. It improves the connection stability and smooth operation of the hinge joint. Specifically, the bush 440 is fitted on the outside of the transmission rod 410 and is installed inside the sleeve 420, and its outer wall is in close contact with the inner wall of the sleeve 420. This bush 440 is preferably made of a material with excellent wear resistance and a certain degree of elasticity. On the other hand, since the bush 440 is in close contact with the inner wall of the sleeve 420, it effectively fills the gap between the transmission rod 410 and the sleeve 420, improves the positioning accuracy of the connection point, and can prevent shaking and vibration caused by an overly large gap, contributing to improving the operation stability of the entire transmission system. On the other hand, as an intermediate buffer layer, the bush 440 can absorb some impact forces and vibrations during the operation of the transmission rod 410, so it can reduce the frictional noise between parts and extend the service life of the main parts, especially the sleeve 420 and the latch 430. At the same time, the bush 440 also has an excellent lubricating effect, can reduce the sliding resistance during high-frequency reciprocating motion, reduce wear, and further improve the smoothness and quietness of the operation of the entire device.

[0038] The bush 440 extends into the through hole 413, and the bush 440 is positioned between the inner wall of the through hole 413 and the latch 430. On the one hand, the bush 440 forms an interference fit type or close contact type buffer layer inside the through hole 413, and can effectively absorb the assembly backlash caused by the assembly tolerance between the latch 430 and the through hole 413, improving the positioning accuracy and structural stability of the latch 430. On the other hand, the material of the bush 440 itself is excellent in flexibility and wear resistance, is located around the latch 430 to play a role in relaxation, wear resistance and noise reduction, and avoids the occurrence of noise and damage when the latch 430 directly rubs against metal parts during high-frequency movement. At the same time, with this design, the axial and radial wear of the latch 430 during movement is reduced to a certain extent, the service life of the latch 430 is extended, and the reliability and service life of the entire transmission system are improved.

[0039] In this embodiment, a slide sleeve 450 is provided within the housing 100. The sleeve 420 is located within the slide sleeve 450, and a silicone sleeve 451 is provided between the slide sleeve 450 and the housing 100. In order to further optimize the stability and comfort during the operation of the transmission mechanism 400, a silicone sleeve 451 is provided between the slide sleeve 450 and the housing 100, that is, a flexible buffer material is continuously coated circumferentially on the outside of the slide sleeve 450, enabling flexible fitting with the inner wall of the housing 100. When the transmission mechanism 400 reciprocates at high speed, it can effectively absorb the fine vibrations and impact forces generated during mechanical movement, thus reducing the noise and vibration during the operation of the entire device and improving the user experience.

[0040] As shown in FIGS. 1 to 2, this embodiment further includes a control panel 600. The control panel 600 is located above the transmission mechanism 400, and the control panel 600 is provided with an operation button 610 and a battery level display lamp 620. In order to improve the convenience of operation, the control panel 600 is provided with an operation button 610 and a battery level display lamp 620. The operation button 610 is used for operation functions such as turning the device on and off, starting and stopping the motor 200, and switching modes. The battery level display lamp 620 is used to display the current battery level in real time, enabling the user to grasp the remaining power during use and charge in a timely manner.

[0041] In particular, the position of the control panel 600 is optimized ergonomically. When the user holds the fascia gun in the normal way, the thumb naturally lies in the area of the control panel 600, allowing for one-handed control operations. This layout method avoids the inconvenience of the "button pressing with the reverse hand" or "button pressing without visual confirmation" required by conventional fascia guns, improving the intuitiveness of product operation and the comfort of use.

[0042] When the motor starts, as the output shaft rotates, the eccentric wheel rotates. With the rotation of the eccentric wheel, the eccentric turntable of the eccentric wheel undergoes eccentric motion. Power is transmitted to the transmission rod through the bearing located on the outside of the eccentric turntable. One end of the transmission rod performs circular motion around the eccentric turntable. The other end is hinged to the sleeve and is restricted by the slide sleeve structure. Therefore, this circular motion is converted into the reciprocating linear motion of the sleeve along the axial direction of the fascia gun. As a result, the massage head at the front end is driven to generate periodic impacts, realizing the massage function of relaxing the muscles.

[0043] In this process, multiple structures are optimized to function in cooperation. Due to the overlap of the axial projection of the eccentric turntable and the output shaft and the embedded type design, the height of the drive mechanism is reduced. With the trajectory limitation design of r + d < R, it is ensured that the transmission rod always moves within the contour of the fixed plate, avoiding structural overflow. By combining multiple hinge connection structures (such as latch type, boss type, positioning ball type, etc.) with bushings, the assembly accuracy and transmission stability are improved. With the combined structure of the slide sleeve and the silicone sleeve, vibration attenuation and noise reduction during operation are realized. By placing the power supply horizontally at the corner formed between the motor and the transmission mechanism, the utilization rate of the internal space is maximized, and the overall length of the device is shortened. By providing the control panel in an area that is easy for the user to operate, the user can realize mode switching, power on / off, and battery level checking through the operation buttons.

[0044] Through the combination of the above structures and the design of the process path, the present invention realizes an efficient power conversion process of rotation - eccentricity - reciprocation. In ensuring the realization of the massage function, it achieves a high integration degree, dimension compression, and function optimization of the entire device, and is particularly suitable for the scenario of personal health massage devices with strict requirements for portability and miniaturization.

[0045] As described above, the present invention proposes a comprehensive solution for a miniaturized fascia gun suitable for portable application scenarios by optimizing the internal structure of the fascia gun in many aspects. Specifically, it is as follows. By installing the motor 200 and the transmission mechanism 400 in a corner layout and integrating the power supply 500, which is a module, into the corner, the utilization rate of the internal space of the housing 100 is effectively improved, and the flattening and miniaturization of the overall structure of the fascia gun are realized. By optimizing the spatial relationship between the eccentric wheel 300 and the output shaft 210 of the motor 200, the axial projection of the output shaft 210 is within the contour range of the eccentric wheel 300, and the occupied space in the vertical direction is reduced to the maximum extent. By providing a round groove 411 on the outside of the eccentric frustum 310, combining it with the bearing 412, and ensuring that the parameter design satisfies the constraint relationship of r + d < R, it is ensured that the movement trajectory of the transmission rod 410 does not exceed the outer diameter of the fixed plate 220. Furthermore, the dimensions of the entire device are reduced, and the space layout is optimized. By adopting a lightweight and compact hinge connection structure for the transmission rod 410 and the sleeve 420, such as the latch 430 type, boss type, positioning ball type, etc., the length and width of the transmission mechanism 400 are effectively shortened, and the compactness of the entire fascia gun is improved. By providing a flexible buffer structure for the slide sleeve 450 and the silicone sleeve 451, vibration and noise are reduced, and the comfort and durability of the miniaturized fascia gun in a high-frequency operation environment are improved. Due to the layout of the control panel 600 optimized based on ergonomics, it achieves both a portable size and the convenience of one-handed operation, improving the user experience.

[0046] Through the above multi-dimensional structural innovations, the present invention realizes the high integration and extreme miniaturization of the fascia gun product, significantly improving its portability, operability, and comfort during use, and having good application potential and market competitiveness.

[0047] Finally, the above description is only a preferred embodiment of the present invention and does not limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, it is still possible for those skilled in the art to modify the technical solutions described in each of the foregoing embodiments or equivalently replace some of the technical features therein. Any changes, equivalent replacements, improvements, etc. made within the spirit and principle scope of the present invention shall be included in the protection scope of the present invention.

Claims

1. A housing (100) provided with a cavity inside, a motor (200) mounted inside the housing (100) with an eccentric wheel (300) connected to a rotating shaft, a transmission mechanism (400) slidably mounted inside the housing (100), including a transmission rod (410) and a sleeve (420), and both ends of the transmission rod (410) are hingedly connected to the sleeve (420) and the eccentric wheel (300) respectively, and a power supply (500) for supplying power, a corner is formed between the motor (200) and the transmission mechanism (400), and the power supply (500) is mounted at the corner inside the housing (100) so that the housing (100) is flat A portable mini facial gun, characterized in that.

2. An eccentric frustum (310) is provided on the eccentric wheel (300), and the central axis of the eccentric frustum (310) is offset from the output shaft (210) of the motor (200), In the axial projection direction, the output shaft (210) of the motor (200) is located within the contour of the outer edge of the eccentric frustum (310), so that the output shaft (210) of the motor (200) can extend into the eccentric frustum (310) The portable mini facial gun according to claim 1, characterized in that.

3. A round groove (411) is provided at one end of the transmission rod (410), one end of the transmission rod (410) is fitted outside the eccentric frustum (310) through the round groove (411), and a bearing (412) is provided between the eccentric frustum (310) and the transmission rod (410) The portable mini facial gun according to claim 2, characterized in that.

4. The motor (200) is an outer rotor motor, and the motor (200) is mounted inside the housing (100) through a fixed disk (220), Let the maximum radius of the outer wall of the round groove (411) be r, the eccentric distance of the eccentric frustum (310) be d, and the radius of the fixed disk (220) be R, The sum of the maximum radius r of the outer wall of the round groove (411) and the eccentric distance d of the eccentric frustum (310) is made smaller than the radius R of the fixed disk (220) so that the outer diameter of the circumferential displacement locus of the transmission rod (410) is smaller than the outer diameter of the fixed disk (220) The portable mini facial gun according to claim 3, characterized in that.

5. A first cushion pad (221) is provided on the outer wall of the fixed plate (220), and the first cushion pad (221) is located between the fixed plate (220) and the housing (100). The portable mini facial gun according to claim 4, characterized in that.

6. The hinge connection point of the transmission rod (410) and the sleeve (420) is located inside the sleeve (420). The portable mini facial gun according to claim 1, characterized in that.

7. A positioning hole (421) is provided on the side wall of the sleeve (420), a through hole (413) is provided on the transmission rod (410), and a latch (430) is provided in the positioning hole (421) and the through hole (413), thereby realizing the hinge connection between the transmission rod (410) and the sleeve (420). The portable mini facial gun according to claim 6, characterized in that.

8. A bush (440) is provided between the transmission rod (410) and the sleeve (420), and the bush (440) is in close contact with the inner wall of the sleeve (420). The bush (440) extends into the through hole (413), and the bush (440) is located between the inner wall of the through hole (413) and the latch (430). The portable mini facial gun according to claim 7, characterized in that.

9. A slide sleeve (450) is provided in the housing (100), the sleeve (420) is located inside the slide sleeve (450), and a silicone sleeve (451) is provided between the slide sleeve (450) and the housing (100). The portable mini facial gun according to claim 6, characterized in that.

10. Further comprising a control panel (600), the control panel (600) is located above the transmission mechanism (400), and an operation button (610) and a battery level display lamp (620) are provided on the control panel (600). The portable mini facial gun according to claim 1, characterized in that.

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