A fascia gun driving device and a fascia gun

Abstract

The utility model relates to a fascia gun drive arrangement and fascia gun, the fascia gun drive arrangement includes: power part, transmission part is connected with power part transmission, connecting portion, including first end and second end, first end with transmission part far away from one end of power part transmission connection, second end with first end fixed connection, be used for with massage head screw connection, have reduced the damage risk of massage head because of the violence plug -pull, and then prolong the service life advantage of fascia gun.

Description

Technical Field

[0001] This utility model relates to the technical field of massage devices, and in particular to a fascia gun driving device and a fascia gun. Background Technology

[0002] Existing fascia guns typically include a shell, a head cover, a drive unit, and a massage head. The shell and head cover can be assembled into a shell frame called a silent gun. The drive unit is mostly installed in the mounting cavity formed by the shell and head cover, and extends out of the head cover to connect with the massage head, thereby driving the massage head to reciprocate and achieve massage for the user.

[0003] The existing drive unit and massage head are usually connected by a snap-fit ​​mechanism. That is, the part of the drive unit that extends out of the head cover is equipped with an elastic snap, and the sleeve of the massage head is equipped with a corresponding groove. During installation, simply align the sleeve of the massage head with the drive unit and press it firmly to install the massage head.

[0004] However, the above method only uses elastic buckles and grooves to limit the massage head. When the massage head is subjected to a large external force (such as violent pulling by the user, improper use during use causing the massage head to get caught on other structures, etc.), it is easy to detach directly from the drive device, which will lead to wear or even breakage at the connection point. This can easily affect the stable transmission of the fascia gun, causing the fascia gun to shake and affecting its service life. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects in the prior art, thereby providing a fascia gun driving device and a fascia gun.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A fascia gun driving device is used to drive the massage head of a fascia gun to reciprocate, the fascia gun driving device comprising: Power Department; The transmission unit is connected to the power unit in a transmission manner; The connecting part includes a first end and a second end; the first end is drively connected to the end of the transmission part away from the power part, and the second end is fixedly connected to the first end and is used for threaded connection with the massage head.

[0007] In the above solution, the second end of the connecting part is threadedly connected to the massage head, so that the user can only disassemble or assemble the massage head when the fascia gun is stopped, thereby effectively reducing the risk of damage to the massage head due to forceful insertion and removal. At the same time, the second end is fixedly connected to the first end, and the first end is connected to the transmission part for transmission, which can increase the stability of the connecting part itself, thereby increasing the stability of the fascia gun transmission.

[0008] Preferably, the transmission part has a insertion groove, and the first end is inserted into the insertion groove; And / or, The fascia gun driving device further includes a limiting component, and the transmission part is connected to the first end through the limiting component to limit the axial and / or circumferential movement of the first end relative to the transmission part.

[0009] In the above scheme, the first end is inserted into the insertion slot of the transmission part, that is, a portion of the transmission part is sleeved on the outer periphery of the first end. This increases the contact area between the transmission part and the first end to a certain extent, preventing bending deformation of the first end and improving the stability of the transmission between them. Furthermore, the transmission part and the first end are connected by a limiting component, which effectively restricts axial movement of the first end relative to the transmission part, further increasing the stability of the fascia gun's axial transmission. Furthermore, the connection between the transmission part and the first end by the limiting component also effectively restricts circumferential movement of the first end relative to the transmission part. This arrangement, on the one hand, prevents the connecting part from shaking during transmission, further increasing the stability of the fascia gun's transmission; on the other hand, it prevents circumferential rotation of the connecting part during massage head installation, thus facilitating the connection between the massage head and the second end.

[0010] Preferably, the limiting component includes a first limiting hole, a second limiting hole, and a limiting pin; The first limiting hole and the second limiting hole are respectively disposed on the first end and the transmission part; When the first end is inserted into the insertion slot, the limiting pin can be inserted into the first limiting hole and the second limiting hole.

[0011] In the above solution, by inserting the limiting pin into the first limiting hole and the second limiting hole, the axial and circumferential movement of the first end relative to the transmission part can be effectively restricted, and the installation difficulty can also be reduced.

[0012] Preferably, the limiting component includes a limiting protrusion, a guide channel, and a limiting channel; The limiting protrusion protrudes from the outer surface of the first end; The guide channel connects the open end of the insertion slot and the limiting channel; The limiting channel extends circumferentially along the transmission part, and a limiting end is provided on the side away from the guide channel; When the first end is inserted into the insertion slot, the outer wall surface of the limiting protrusion abuts against the inner surface of the limiting end.

[0013] In the above solution, the mutual abutment of the limiting protrusion and the limiting channel further achieves axial positioning between the first end and the transmission part, that is, it achieves two-layer positioning between the first end and the transmission part, thereby further improving the stability of the connection between the two. Furthermore, when the first end is inserted into the insertion slot, the outer wall surface of the limiting protrusion abuts against the inner surface of the limiting end, which can achieve positioning of the first limiting hole and the second limiting hole, further facilitating the installation of the limiting pin.

[0014] Preferably, it further includes an elastic extrusion section; The two axial ends of the elastic compression part abut against the first end and the transmission part respectively, so that it is pressed between the first end and the transmission part; The circumferential side of the elastic compression part is partially in contact with or has a gap with the head cap assembly of the fascia gun.

[0015] In the above solution, the elastic compression part is pressed between the first end and the transmission part, which can realize vibration reduction between the first end and the transmission part, thereby improving the stability of the transmission between the two. Furthermore, the axial side of the elastic compression part is partially in contact with or gapped with the head cap assembly of the fascia gun, which can prevent the transmission part and the connecting part from excessively tilting away from the transmission direction without excessively increasing the frictional resistance experienced by the transmission part and the connecting part, thereby further improving the stability of the transmission between the two.

[0016] Preferably, the elastic compression part includes a first elastic ring, a second elastic ring, and a plurality of balls; the first elastic ring and the second elastic ring are both sleeved on the first end; the balls are located between the first elastic ring and the second elastic ring and are used to roll in cooperation with the head cap assembly of the fascia gun. And / or, The elastic compression part includes a first elastic ring, a second elastic ring, and a plurality of balls; the outer surface of the transmission part and the outer surface of the first end are respectively provided with a first abutting boss and a second abutting boss. Along the axial direction of the first end, the first abutting boss, the first elastic ring, the second elastic ring, and the second abutting boss abut against each other in sequence, and press the balls between the first elastic ring and the second elastic ring.

[0017] In the above scheme, both the first elastic ring and the second elastic ring are fitted onto the first end, which can prevent the first elastic ring and the second elastic ring from radially displacing or undergoing excessive radial deformation during the compression process, thereby ensuring the stability of the installation of the two and the ball located between them, and improving the stability of the transmission of the fascia gun drive device.

[0018] Furthermore, the rolling engagement between the ball bearings and the head cover assembly can prevent excessive tilting of the transmission and connection parts from deviating from their respective transmission directions, and can further reduce the frictional resistance experienced by the elastic compression part.

[0019] Furthermore, the provision of the first abutting boss and the second abutting boss can increase the axial abutting area of ​​the first elastic ring and the second elastic ring, thereby increasing the stability of the installation of the first elastic ring, the second elastic ring and the ball located between them, and improving the transmission stability of the fascia gun drive device.

[0020] Preferably, an auxiliary clamping part is provided between the first end and the second end; The auxiliary clamping part protrudes radially from the second end to form a limiting surface on the side facing the second end; It also includes an anti-loosening pad, which presses the anti-loosening pad against the limiting surface when the massage head is installed at the second end.

[0021] In the above solution, the auxiliary clamping part allows the massage head to be clamped with appropriate tools during installation or removal, facilitating the installation of the massage head and preventing the second end from breaking due to improper operation during installation. The anti-loosening washer applies axial force to the massage head after installation, preventing the threaded connection between it and the second end from failing.

[0022] Preferably, the power unit includes a motor housing, a motor, and an eccentric component; The motor and the eccentric component are both integrated and installed in the motor housing so that they are installed synchronously with the motor housing; One end of the eccentric component is connected to the motor drive, and the other end is connected to the end of the transmission part away from the connection part through a transmission connector.

[0023] In the above solution, the eccentric component of the power unit is directly integrated into the motor housing. During the assembly of the fascia gun, the user only needs to connect the transmission unit and the eccentric component of the power unit via the transmission connector. Compared to the existing method of first installing the motor, then assembling the transmission unit, bearings, and eccentric component, and finally connecting the eccentric component and motor with fasteners, the fascia gun assembly process requires fewer structures, avoiding the accumulation of installation errors between multiple structures and thus ensuring transmission stability. Furthermore, because fewer structures need to be assembled, it also avoids the possibility of oversights that can easily occur when manually assembling multiple parts.

[0024] It is worth noting that, since the eccentric component and motor of the power unit are integrated, the power unit can be used for different fascia guns, and only different types of transmission connectors need to be replaced.

[0025] A fascia gun includes a housing, a head cap assembly, a massage head, and a fascia gun drive device as described above. The head cover assembly is detachably connected to the outer shell; The fascia gun drive device is partially installed inside the housing and partially penetrates the head cover assembly to connect with the massage head.

[0026] Preferably, the head cover assembly includes an outer cover body and a metal bushing; The outer cover is threadedly connected to the outer shell to axially confine the metal bushing between the outer cover and the outer shell; The ball bearings of the elastic compression section of the fascia gun drive device abut against the inner wall surface of the metal bushing or there is a preset gap.

[0027] In the above solution, by setting the metal bushing, on the one hand, the friction force on the ball bearing can be reduced, which facilitates the stable operation of the massage head driven by the fascia gun drive device. On the other hand, it can prevent the power of the fascia gun drive device from acting directly on the injection-molded outer cover, thereby preventing the outer cover from breaking and also preventing the connection stability between the outer cover and the outer shell from being affected.

[0028] Compared with the prior art, the present invention has at least the following beneficial effects: 1. The second end of the connecting part is threadedly connected to the massage head, allowing the user to only assemble or disassemble the massage head when the fascia gun is stopped. This effectively reduces the risk of damage to the massage head due to forceful insertion or removal, extending the service life of the fascia gun. Simultaneously, the second end is fixedly connected to the first end, which in turn is connected to the transmission part, increasing the stability of the connecting part itself and consequently enhancing the stability of the fascia gun's transmission.

[0029] 2. The auxiliary clamping part allows for the use of appropriate tools to hold the auxiliary clamping part during the installation or removal of the massage head, facilitating the installation of the massage head and preventing breakage of the second end due to improper operation during installation. The anti-loosening washer applies axial force to the massage head after installation, preventing failure of the threaded connection between it and the second end.

[0030] 3. The eccentric component of the power unit is directly integrated into the motor housing. During assembling the fascia gun, the user only needs to connect the transmission unit and the eccentric component of the power unit via the transmission connector. Compared to the existing method of first installing the motor, then assembling the transmission unit, bearings, and eccentric component, and finally connecting the eccentric component and motor with fasteners, the fascia gun assembly process requires fewer components, avoiding the accumulation of installation errors between multiple structures and thus ensuring transmission stability. Furthermore, fewer components also prevent oversights that can occur when manually assembling multiple parts. In addition, because the eccentric component and motor of the power unit are integrated, this power unit is applicable to different fascia guns; only different types of transmission connectors need to be replaced. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention.

[0033] Figure 2 for Figure 1 Exploded view of the central transmission section and the connecting section.

[0034] Figure 3 for Figure 1 A cross-sectional diagram.

[0035] Figure 4 for Figure 3 An enlarged diagram of position D1.

[0036] Figure 5 for Figure 1 Exploded view of the transmission and power units.

[0037] Figure 6 This is a schematic diagram of the structure of Embodiment 2 provided by this utility model.

[0038] Figure 7 for Figure 6 A cross-sectional diagram.

[0039] Figure 8 for Figure 7 An enlarged view of position D2 in the middle.

[0040] Explanation of reference numerals in the attached figures: 100. Outer shell; 200. Head cover assembly; 201. Outer cover body; 202. Metal bushing; 1. Power unit; 11. Motor housing; 12. Motor; 13. Eccentric component; 2. Transmission unit; 21. Insertion groove; 22. First abutting boss; 3. Connecting part; 31. First end; 311. Insertion end; 312. Cylindrical boss; 313. Second abutting boss; 32. Second end; 33. Auxiliary clamping part; 331. Limiting surface; 4. Limiting component; 41. First limiting hole; 42. Second limiting hole; 43. Limiting pin; 44. Limiting protrusion; 45. Guide channel; 46. Limiting channel; 461. Limiting end; 5. Elastic compression part; 51. First elastic ring; 52. Second elastic ring; 53. Ball bearing; 6. Anti-loosening washer; 7. Transmission connecting component. Detailed Implementation

[0041] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0042] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] Example 1 See Figures 1 to 5 This utility model provides a fascia gun driving device for driving the massage head of the fascia gun to reciprocate.

[0045] Specifically, the fascia gun driving device includes a power unit 1, a transmission unit 2, and a connecting unit 3. The power unit 1 is the main power source. One end of the transmission unit 2 is connected to the power unit 1, and the other end is connected to the connecting unit 3. It is used to transmit the power of the power unit 1 to the connecting unit 3 and the massage head connected to the connecting unit 3, thereby driving the connecting unit 3 and the massage head to reciprocate synchronously.

[0046] Furthermore, the connecting part 3 includes a first end 31 and a second end 32; wherein the first end 31 is connected to the end of the transmission part 2 away from the power part 1, and the second end 32 is fixedly connected to the first end 31 and is used for threaded connection with the massage head.

[0047] It is easy to understand that the second end 32 of the connecting part 3 is threadedly connected to the massage head, so that the user can only remove or install the massage head when the fascia gun is stopped, thereby effectively reducing the risk of damage to the massage head due to forceful insertion and removal. At the same time, the second end 32 is fixedly connected to the first end 31, and the first end 31 is connected to the transmission part 2, which increases the stability of the connecting part 3 itself and thus increases the stability of the fascia gun transmission.

[0048] Furthermore, an auxiliary clamping part 33 is provided between the first end 31 and the second end 32; when installing or removing the threaded head, the auxiliary clamping part 33 can be clamped with the help of a corresponding tool to facilitate the installation of the massage head and avoid breaking the second end 32 due to improper operation during the installation of the massage head.

[0049] Specifically, the auxiliary clamping part 33 protrudes radially from the second end 32 to form a limiting surface 331 on the side facing the second end 32. Furthermore, the fascia gun drive device also includes an anti-loosening pad 6, which presses the anti-loosening pad 6 against the limiting surface 331 when the massage head is mounted on the second end 32.

[0050] It is easy to understand that the anti-loosening washer 6 can be set as an elastic rubber ring, metal spring, or spring, etc. After the massage head is installed, the anti-loosening washer 6 can apply an axial force to the massage head to prevent the threaded connection between the massage head and the second end 32 from failing.

[0051] See Figures 1 to 4 The transmission part 2 has a insertion groove 21, and the first end 31 is inserted into the insertion groove 21. That is, a part of the transmission part 2 is sleeved on the outer periphery of the first end 31, which can increase the contact area between the transmission part 2 and the first end 31 to a certain extent, avoid bending deformation of the first end 31, and improve the stability of the transmission between the two.

[0052] To further increase the stability of the fascia gun transmission, in this embodiment, the fascia gun driving device also includes a limiting component 4. The transmission part 2 and the first end 31 are connected through the limiting component 4 to restrict the movement of the first end 31 relative to the transmission part 2.

[0053] It is easy to understand that when the transmission part 2 is connected to the first end 31 via the limiting component 4, and the axial movement of the first end 31 relative to the transmission part 2 is restricted, the stability of the axial transmission of the fascia gun can be increased. When the transmission part 2 is connected to the first end 31 via the limiting component 4, and the circumferential movement of the first end 31 relative to the transmission part 2 is restricted, on the one hand, the connecting part 3 can be prevented from shaking during the transmission of the transmission part 2, further increasing the stability of the fascia gun transmission; on the other hand, the connecting part 3 can be prevented from rotating circumferentially during the installation of the massage head, which is beneficial to the connection between the massage head and the second end 32.

[0054] Specifically, the limiting component 4 includes a first limiting hole 41, a second limiting hole 42, and a limiting pin 43. The first limiting hole 41 and the second limiting hole 42 are respectively disposed on the first end 31 and the transmission part 2. When the first end 31 is inserted into the insertion groove 21, the limiting pin 43 can be inserted into the first limiting hole 41 and the second limiting hole 42, thereby effectively limiting the axial and circumferential movement of the first end 31 relative to the transmission part 2, and improving the stability of the connection and transmission. It is easy to understand that the connection method between the first end 31 and the transmission part 2, which uses the first limiting hole 41, the second limiting hole 42, and the limiting pin 43 in cooperation, also reduces the installation difficulty.

[0055] Furthermore, the first limiting hole 41 is configured as a through hole penetrating the first end 31, and the central axis of the first limiting hole 41 is perpendicular to and intersects the central axis of the first end 31. Two second limiting holes 42 are symmetrically arranged about the first end 31, and both second limiting holes 42 penetrate the transmission part 2 and communicate with the insertion groove 21.

[0056] It is easy to understand that when the first end 31 is inserted into the insertion slot 21 and the first limiting hole 41 and the second limiting hole 42 are roughly aligned, the limiting pin 43 can be inserted and fixed into the first limiting hole 41 and the second limiting hole 42.

[0057] Furthermore, the limiting pin 43 can be threadedly connected to either the first limiting hole 41 or the second limiting hole 42. For example, when the limiting pin 43 moves along... Figure 4 When inserted in the X direction as shown, the limiting pin 43 can be threaded into the second limiting hole 42 located at the lower end (i.e., the side away from the insertion end of the limiting pin 43), which facilitates installation while ensuring the stability of the connection. At this time, the outer wall surface of the middle section of the limiting pin 43 can also abut against the inner wall surface of the first limiting hole 41.

[0058] Of course, in other embodiments, the limiting pin 43 may also be interference-fitted with the first limiting hole 41 and the second limiting hole 42.

[0059] Furthermore, the limiting component 4 also includes a limiting protrusion 44, a guide channel 45, and a limiting channel 46; wherein, the limiting protrusion 44 protrudes from the outer surface of the first end 31; the guide channel 45 connects the opening end of the insertion groove 21 and the limiting channel 46; the limiting channel 46 extends circumferentially along the transmission part 2, and a limiting end 461 is provided on the side away from the guide channel 45; when the first end 31 is inserted into the insertion groove 21, the outer wall surface of the limiting protrusion 44 abuts against the inner surface of the limiting end 461 to further limit the axial movement of the first end 31 relative to the transmission part 2.

[0060] It is easy to understand that at this time, there are two layers of positioning between the first end 31 and the transmission part 2 (i.e., axial and circumferential positioning between the limiting pin 43 and the first limiting hole 41 and the second limiting hole 42, and axial positioning between the limiting protrusion 44 and the limiting channel 46), which can further improve the stability of the connection between the two. Moreover, when the first end 31 is inserted into the insertion groove 21, the outer wall surface of the limiting protrusion 44 abuts against the inner surface of the limiting end 461, which can realize the positioning of the first limiting hole 41 and the second limiting hole 42, further facilitating the insertion of the limiting pin 43 into the first limiting hole 41 and the second limiting hole 42.

[0061] See Figures 1 to 4 The fascia gun driving device also includes an elastic compression part 5; the two axial ends of the elastic compression part 5 abut against the first end 31 and the transmission part 2 respectively, so that it is pressed between the first end 31 and the transmission part 2, thereby realizing vibration reduction between the first end 31 and the transmission part 2, and further improving the stability of the transmission between the two.

[0062] Furthermore, the circumferential side of the elastic compression part 5 abuts against the head cap assembly 200 of the fascia gun, thereby preventing the transmission part 2 and the connecting part 3 from excessively tilting away from their transmission direction without excessively increasing the frictional resistance experienced by the transmission part 2 and the connecting part 3, thereby further improving the stability of the transmission between the two.

[0063] Of course, in other embodiments, a gap may also be provided between the circumferential side of the elastic compression part 5 and the head cap assembly 200 of the fascia gun, as long as the gap is not too large.

[0064] Furthermore, the elastic compression part 5 includes a first elastic ring 51, a second elastic ring 52, and a plurality of balls 53; the first elastic ring 51 and the second elastic ring 52 are both sleeved on the first end 31, and the balls 53 are located between the first elastic ring 51 and the second elastic ring 52; thereby, it can prevent the first elastic ring 51 and the second elastic ring 52 from undergoing radial displacement or excessive radial deformation during the compression process, thereby ensuring the stability of the installation of the two and the balls 53 located between them, and improving the stability of the transmission of the fascia gun drive device.

[0065] Furthermore, the first end 31 is configured as a stepped structure, which includes an insertion end 311 and a cylindrical boss 312. The diameter of the insertion end 311 is smaller than that of the cylindrical boss 312. The insertion end 311 is used to insert and cooperate with the insertion groove 21. The outer periphery of the cylindrical boss 312 is fitted with a first elastic ring 51 and a second elastic ring 52. The end face of the cylindrical boss 312 abuts against the end face of the transmission part 2.

[0066] Furthermore, the outer surface of the transmission part 2 and the outer surface of the first end 31 are respectively provided with a first abutting boss 22 and a second abutting boss 313. Along the axial direction of the first end 31, the first abutting boss 22, the first elastic ring 51, the second elastic ring 52, and the second abutting boss 313 abut against each other in sequence, pressing the ball 53 between the first elastic ring 51 and the second elastic ring 52. It is easy to understand that the provision of the first abutting boss 22 and the second abutting boss 313 can increase the axial abutting area of ​​the first elastic ring 51 and the second elastic ring 52, thereby increasing the stability of the installation of the first elastic ring 51, the second elastic ring 52 and the ball 53 located between them, and improving the stability of the transmission of the fascia gun drive device.

[0067] Furthermore, the ball bearing 53 is used for rolling engagement with the head cap assembly 200 of the fascia gun (see...). Figure 7 and Figure 8 (As shown in the fascia gun), this can prevent the transmission part 2 and the connecting part 3 from tilting excessively away from their transmission directions, and can further reduce the frictional resistance of the elastic compression part 5.

[0068] Furthermore, the ball bearing 53 can be configured as a metal sphere. A plurality of balls bearing 53 are provided, and the plurality of balls bearing 53 are arranged in a circular array about the central axis of the first end 31.

[0069] See Figure 1 , Figure 3 and Figure 5 The power unit 1 includes a motor housing 11, a motor 12, and an eccentric component 13; wherein the motor 12 and the eccentric component 13 are both integrated and installed in the motor housing 11 so as to be installed synchronously with the motor housing 11; one end of the eccentric component 13 is connected to the motor 12 for transmission, and the other end is connected to the end of the transmission unit 2 away from the connecting part 3 through the transmission connector 7.

[0070] It's easy to understand that the eccentric component 13 of the power unit 1 is directly integrated into the motor housing 11. During the assembly of the fascia gun, the user only needs to connect the transmission unit 2 and the eccentric component 13 of the power unit 1 via the transmission connector 7. Compared to the existing method of first installing the motor 12, then assembling the transmission unit 2, bearings, and eccentric component 13, and finally connecting the eccentric component 13 and the motor 12 with fasteners, the fascia gun assembly process requires fewer structures, avoiding the accumulation of installation errors between multiple structures and thus ensuring transmission stability. Furthermore, because fewer structures need to be assembled, it also avoids the possibility of oversights that can easily occur when manually assembling multiple parts.

[0071] It is worth noting that since the eccentric part 13 and the motor 12 of the power unit 1 are integrated and installed, the power unit 1 can be used for different fascia guns, and only different types of transmission connecting parts 7 need to be replaced.

[0072] Example 2 See Figures 6 to 8 Based on the above embodiment one, this embodiment also provides a fascia gun, including a housing 100, a head cover assembly 200, a massage head, and a fascia gun driving device as described above.

[0073] Specifically, the head cover assembly 200 is detachably connected to the outer shell 100, specifically by a threaded connection (of course, snap-fit ​​connections, fastener connections, etc., can also be used). The fascia gun drive device is partially installed inside the outer shell 100, and partially penetrates the head cover assembly 200 to connect with the massage head.

[0074] Furthermore, the headgear assembly 200 includes an outer cover 201 and a metal bushing 202; the outer cover 201 is threadedly connected to the outer shell 100 to axially limit the metal bushing 202 between the outer cover 201 and the outer shell 100; the ball 53 of the elastic compression part 5 of the fascia gun drive device abuts against the inner wall surface of the metal bushing 202 or there is a preset gap.

[0075] It is easy to understand that by setting the metal bushing 202, on the one hand, the friction force on the ball bearing 53 can be reduced, which makes it easier for the fascia gun drive device to drive the massage head to operate stably. On the other hand, it can prevent the power of the fascia gun drive device from acting directly on the injection-molded outer cover 201, thereby preventing the outer cover 201 from breaking and also preventing the connection stability between the outer cover 201 and the outer shell 100 from being affected.

[0076] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A fascia gun driving device for driving the massage head of a fascia gun to reciprocate, characterized in that, The fascia gun driving device includes: Power unit (1); The transmission unit (2) is connected to the power unit (1) in a transmission manner; The connecting part (3) includes a first end (31) and a second end (32); the first end (31) is connected to the end of the transmission part (2) away from the power part (1), and the second end (32) is fixedly connected to the first end (31) and is used for threaded connection with the massage head.

2. The fascia gun driving device according to claim 1, characterized in that, The transmission part (2) has a insertion slot (21), and the first end (31) is inserted into the insertion slot (21); And / or, The fascia gun drive device also includes a limiting component (4), and the transmission part (2) is connected to the first end (31) through the limiting component (4) to limit the axial movement and / or circumferential movement of the first end (31) relative to the transmission part (2).

3. The fascia gun driving device according to claim 2, characterized in that, The limiting component (4) includes a first limiting hole (41), a second limiting hole (42), and a limiting pin (43). The first limiting hole (41) and the second limiting hole (42) are respectively disposed on the first end (31) and the transmission part (2); When the first end (31) is inserted into the insertion slot (21), the limiting pin (43) can be inserted into the first limiting hole (41) and the second limiting hole (42).

4. A fascia gun driving device according to claim 2 or 3, characterized in that, The limiting component (4) includes a limiting protrusion (44), a guide channel (45), and a limiting channel (46). The limiting protrusion (44) protrudes from the outer surface of the first end (31); The guide channel (45) connects the opening end of the insertion slot (21) and the limiting channel (46). The limiting channel (46) extends circumferentially along the transmission part (2), and a limiting end (461) is provided on the side away from the guide channel (45). When the first end (31) is inserted into the insertion slot (21), the outer wall surface of the limiting protrusion (44) abuts against the inner surface of the limiting end (461).

5. A fascia gun driving device according to claim 1 or 2, characterized in that, It also includes an elastic extrusion section (5); The two axial ends of the elastic compression part (5) abut against the first end (31) and the transmission part (2) respectively, so that it is pressed between the first end (31) and the transmission part (2); The circumferential side of the elastic compression part (5) is partially in contact with or spaced from the head cap assembly (200) of the fascia gun.

6. A fascia gun driving device according to claim 5, characterized in that, The elastic compression part (5) includes a first elastic ring (51), a second elastic ring (52) and a plurality of balls (53); the first elastic ring (51) and the second elastic ring (52) are both sleeved on the first end (31); the balls (53) are located between the first elastic ring (51) and the second elastic ring (52) and are used to roll in cooperation with the head cap assembly (200) of the fascia gun; And / or, The elastic compression part (5) includes a first elastic ring (51), a second elastic ring (52) and a plurality of balls (53); the outer surface of the transmission part (2) and the outer surface of the first end (31) are respectively provided with a first abutting boss (22) and a second abutting boss (313). Along the axial direction of the first end (31), the first abutting boss (22), the first elastic ring (51), the second elastic ring (52) and the second abutting boss (313) abut against each other in sequence, and press the balls (53) between the first elastic ring (51) and the second elastic ring (52).

7. A fascia gun driving device according to claim 1, characterized in that, An auxiliary clamping part (33) is provided between the first end (31) and the second end (32). The auxiliary clamping part (33) protrudes radially from the second end (32) to form a limiting surface (331) on the side facing the second end (32). It also includes an anti-loosening pad (6), which presses the anti-loosening pad (6) onto the limiting surface (331) when the massage head is installed on the second end (32).

8. A fascia gun driving device according to claim 1, characterized in that, The power unit (1) includes a motor housing (11), a motor (12), and an eccentric component (13). The motor (12) and the eccentric component (13) are both integrated and installed in the motor housing (11) so as to be installed synchronously with the motor housing (11); One end of the eccentric component (13) is connected to the motor (12) via transmission, and the other end is connected to the end of the transmission part (2) away from the connecting part (3) via the transmission connector (7).

9. A fascia gun, characterized in that, It includes a housing (100), a head cover assembly (200), a massage head, and a fascia gun drive device as described in any one of claims 1-8 above; The head cover assembly (200) is detachably connected to the outer shell (100); The fascia gun drive device is partially installed inside the housing (100) and partially penetrates the head cover assembly (200) to be connected to the massage head.

10. A fascia gun according to claim 9, characterized in that, The head cover assembly (200) includes an outer cover body (201) and a metal bushing (202); The outer cover (201) is threadedly connected to the outer shell (100) to axially confine the metal bushing (202) between the outer cover (201) and the outer shell (100); The ball (53) of the elastic compression part (5) of the fascia gun drive device abuts against the inner wall surface of the metal bushing (202) or there is a preset gap.

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