Massage drive mechanism and fascia gun

Abstract

The present invention belongs to the field of massage equipment, and specifically discloses a massage drive mechanism capable of changing amplitude, and a fascia gun including the above-mentioned massage drive mechanism. The eccentric wheel assembly of the massage drive mechanism is mainly composed of a lower eccentric wheel, an upper eccentric wheel, a gear and a movable shaft seat, and the movable shaft seat with an eccentric shaft is meshed with the gear through a rack at its lower part, and can move between a first limit portion and a second limit portion along the tooth profile direction of the rack. Since the eccentric distance e1≠e2 of the eccentric shaft when the movable shaft seat is in a forward and reverse locking state, the amplitude A1≠A2 generated by the piston rod when the motor is forward and reversed can meet the needs of customers for different massage depths when massaging different positions, ensure the massage effect, and improve the user experience.

Description

Technical Field

[0001] The invention belongs to the field of massage equipment, and in particular relates to a massage driving mechanism and a fascia gun. Background Art

[0002] The fascia gun, also known as the deep myofascial impactor, is a soft tissue massage tool that relaxes the body's soft tissues through high-frequency impacts. The existing fascia gun drives the massage head to make reciprocating linear reciprocating motions through the massage drive mechanism. The massage head contacts the human body and generates high-frequency vibrations that act on the deep muscle layer, which reduces local tissue tension, relieves pain, and promotes blood circulation.

[0003] The existing massage drive mechanism is mainly composed of a motor, an eccentric wheel arranged on the output end of the motor, a transmission arm hinged to the eccentric shaft of the eccentric wheel at one end, and a piston rod hinged to the other end of the transmission arm at the tail. During the operation of the fascia gun, the motor drives the eccentric wheel, the transmission arm, the piston rod and the massage head to form a striking massage mode, and its amplitude, that is, the striking distance, is determined by the eccentricity of the eccentric shaft on the eccentric wheel.

[0004] However, the existing massage drive mechanism is a fixed eccentric shaft, and the eccentricity cannot be adjusted. For example, the massage drive mechanism with a striking distance of 8mm has the same striking distance in both forward and reverse rotations. When the striking distance is large, hitting the area with less muscle will cause pain, and when the striking distance is small, hitting the area with more muscle will not have much massage effect. Therefore, it is far from meeting the customer's demand for different amplitudes of the fascia gun when massaging different positions. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a massage driving mechanism capable of changing the amplitude.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a massage driving mechanism includes a motor, an eccentric wheel assembly, a transmission arm and a piston rod, the two ends of the transmission arm are respectively hinged with the eccentric shaft of the eccentric wheel assembly and the tail of the piston rod; the eccentric wheel assembly includes a lower eccentric wheel, an upper eccentric wheel, a gear and a movable shaft seat, and the movable shaft seat includes a shaft seat body, an eccentric shaft arranged on the upper part of the shaft seat body, and a rack arranged on the lower part of the shaft seat body;

[0007] The upper eccentric wheel is arranged on the upper side of the lower eccentric wheel, and an adjustment cavity is formed between the upper eccentric wheel and the lower eccentric wheel;

[0008] The output end of the motor extends into the adjustment cavity through the lower eccentric wheel, and the gear is arranged in the adjustment cavity and mounted on the output end of the motor;

[0009] The movable shaft seat is installed on the lower eccentric wheel and / or the upper eccentric wheel, and can move along the tooth profile of the rack; the lower part of the movable shaft seat is in the adjustment cavity, and its rack is meshed with the gear;

[0010] The adjusting chamber is provided with a first limiting portion and a second limiting portion respectively located at the front and rear ends of the rack. When the movable shaft seat moves to the front end of the rack and abuts against the first limiting portion, the eccentric distance between the rotation center of the eccentric shaft and the eccentric wheel assembly is e1; when the movable shaft seat moves to the rear end of the rack and abuts against the second limiting portion, the eccentric distance between the rotation center of the eccentric shaft and the eccentric wheel assembly is e2, and e2≠e1.

[0011] Furthermore, the cross section of the output end of the motor is in a "D" shape, a D-shaped hole is provided at the center of the gear and the gear is mounted together with the output end of the motor through the D-shaped hole.

[0012] Furthermore, a mounting groove is provided on the upper portion of the lower eccentric wheel, and the front and rear groove walls of the mounting groove are respectively the first limiting portion and the second limiting portion, and the gear and the rack are both located in the mounting groove.

[0013] Furthermore, the left and right side groove walls of the installation groove extend upward to form a left connecting platform and a right connecting platform respectively, and the upper eccentric wheel is arranged on the lower eccentric wheel and is connected to the left connecting platform and the right connecting platform respectively through connecting pieces.

[0014] Furthermore, a U-shaped opening is provided on the upper eccentric wheel, which is located directly above the mounting groove, and the width of the U-shaped opening is smaller than the width of the mounting groove. The left connecting platform, the right connecting platform and the upper eccentric wheel together form an installation space with a "convex" shape in longitudinal section, and the shaft seat body of the movable shaft seat is arranged in the installation space and is clearance-matched therewith.

[0015] Furthermore, the upper eccentric wheel is provided with a positioning structure matching the lower eccentric wheel.

[0016] Furthermore, the positioning structure is a protrusion provided at the rear end of the bottom surface of the upper eccentric wheel, and the protrusion is embedded and fitted between the rear ends of the left connecting platform and the right connecting platform.

[0017] Furthermore, the eccentric wheel assembly also includes a bearing; a bearing hole is provided at the bottom of the lower eccentric wheel, and the bearing is installed in the bearing hole; the output shaft of the motor is installed together with the inner hole of the bearing, and the output end of the motor is the upper end of the output shaft.

[0018] Furthermore, the difference between e1 and e2 is 3 to 4 mm.

[0019] The present invention also provides a fascia gun, including a shell, which also includes the above-mentioned massage drive mechanism, the massage drive mechanism is arranged in the shell, the motor is fixedly connected to the shell through a motor fixing bracket, and the piston rod is movably connected to the shell through a sliding sleeve.

[0020] Furthermore, the fascia gun also includes a main control board; a motor forward and reverse control switch is provided on the shell, and the motor and the motor forward and reverse control switch are electrically connected to the main control board respectively.

[0021] The beneficial effects of the present invention are as follows: the massage driving mechanism is provided with an eccentric wheel assembly mainly composed of a lower eccentric wheel, an upper eccentric wheel, a gear and a movable shaft seat, and the movable shaft seat with an eccentric shaft is meshed with the gear through the rack at its lower part, and can move between the first limit part and the second limit part along the tooth profile direction of the rack. When the motor drives the gear to rotate forward, the gear can drive the rack to drive the movable shaft seat to move until the front end of the rack abuts against the first limit part, thereby making the movable shaft seat in a forward rotation locking state, thereby being able to drive the entire eccentric wheel assembly to rotate, and drive the transmission arm and the piston rod to move in conjunction, at this time the amplitude generated by the piston rod is A1; similarly, when the motor drives the gear to reverse, the amplitude generated by the piston rod is A2; because when the movable shaft seat is in the forward and reverse locking state, the eccentric distance e1≠e2 of the eccentric shaft, and therefore the amplitude A1≠A2 generated by the piston rod, so it can meet the customer's needs for different massage depths when massaging different positions, thereby ensuring the massage effect and improving the user experience.

[0022] Secondly, the movable shaft seat changes the eccentricity of the eccentric shaft through the transmission of gears and racks, which not only has high transmission accuracy and is convenient for precise control of the eccentricity, but also the direct force point during use is the meshing point of the gear and rack, with large bearing capacity, which is conducive to ensuring service life.

[0023] In addition, when the movable shaft seat switches between the forward and reverse locking states, the overall center of gravity of the eccentric assembly will change. Therefore, different eccentric distances require different eccentric weights. The gear and rack transmission is conducive to making the change of the center of gravity linearly related to the change of the eccentric distance, so as to better adjust the eccentric assembly and reduce the noise and vibration caused by the change of its center of gravity. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic cross-sectional structural diagram of the massage drive mechanism of the present invention;

[0025] Figure 2 is a three-dimensional exploded view of the massage drive mechanism of the present invention;

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure of the lower eccentric wheel in the present invention;

[0027] Figure 4It is a schematic diagram of the three-dimensional structure of the upper eccentric wheel and the movable shaft seat in the present invention after being assembled and inverted;

[0028] Marked in the figure are: motor 100, output shaft 110, motor fixing bracket 120, lower eccentric wheel 210, first limiting part 211, second limiting part 212, left connecting platform 213, right connecting platform 214, upper eccentric wheel 220, connecting piece 221, U-shaped opening 222, protrusion 223, gear 230, D-shaped hole 231, movable shaft seat 240, eccentric shaft 241, rack 242, bearing 250, transmission arm 300, piston rod 400, sleeve 410. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "front", "rear", "left", "right", "upper", "lower", "inner", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description, and do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] Combination Figure 1 and Figure 2 As shown, the massage driving mechanism includes a motor 100, an eccentric wheel assembly, a transmission arm 300 and a piston rod 400, and the two ends of the transmission arm 300 are respectively hinged to the eccentric shaft 241 of the eccentric wheel assembly and the tail of the piston rod 400; the eccentric wheel assembly includes a lower eccentric wheel 210, an upper eccentric wheel 220, a gear 230 and a movable shaft seat 240, and the movable shaft seat 240 includes a shaft seat body, an eccentric shaft 241 arranged on the upper part of the shaft seat body, and a rack 242 arranged on the lower part of the shaft seat body;

[0032] The upper eccentric wheel 220 is disposed on the upper side of the lower eccentric wheel 210, and an adjustment cavity is formed between the upper eccentric wheel 220 and the lower eccentric wheel 210;

[0033] The output end of the motor 100 extends into the adjustment cavity through the lower eccentric wheel 210, and the gear 230 is arranged in the adjustment cavity and mounted on the output end of the motor 100;

[0034] The movable shaft seat 240 is installed on the lower eccentric wheel 210 and / or the upper eccentric wheel 220, and can move along the tooth profile direction of the rack 242; the lower part of the movable shaft seat 240 is in the adjustment cavity, and its rack 242 is meshed with the gear 230;

[0035] The adjusting chamber is provided with a first limiting portion 211 and a second limiting portion 212 respectively located at the front and rear ends of the rack 242. When the movable shaft seat 240 moves to the point where the front end of the rack 242 abuts against the first limiting portion 211, the eccentricity between the eccentric shaft 241 and the rotation center of the eccentric wheel assembly is e1; when the movable shaft seat 240 moves to the point where the rear end of the rack 242 abuts against the second limiting portion 212, the eccentricity between the eccentric shaft 241 and the rotation center of the eccentric wheel assembly is e2, and e2≠e1.

[0036] The massage drive mechanism changes the locked state of the movable shaft seat 240 by the forward and reverse rotation of the motor 100 to adjust the eccentric distance of the eccentric shaft to e1 or e2, so that the piston rod 400 can produce a massage distance with an amplitude of A1 or A2; its specific working principle is: when the motor 100 drives the gear 230 to rotate forward, the gear 230 can drive the rack 242 to drive the movable shaft seat 240 to move until the front end of the rack 242 abuts against the first limit portion 211, thereby making the movable shaft seat 240 in a forward locking state, so that the motor 100 can drive the entire eccentric wheel assembly to rotate, and drive the transmission arm 300 and the piston rod 400 to move in conjunction, and a massage head is installed on the head of the piston rod 400 to form an amplitude It is a striking massage mode of A1; when the motor 100 drives the gear to reverse, the gear 230 can drive the rack 242 to drive the movable shaft seat 240 to move until the rear end of the rack 242 abuts against the second limit portion 212, thereby making the movable shaft seat 242 in a reverse locked state, so that the motor 100 can drive the entire eccentric wheel assembly to rotate, and drive the transmission arm 300 and the piston rod 400 to move in conjunction, and a massage head is installed on the head of the piston rod 400 to form a striking massage mode with an amplitude of A2; since the eccentric distance e1≠e2 of the eccentric shaft, the amplitude A1≠A2 generated by the piston rod, so that the massage drive mechanism can be used as a drive mechanism of the massage equipment to meet customer needs for different massage depths.

[0037] The motor 100 is a driving device of the massage driving mechanism, which can be of various types, preferably a brushless motor. The motor 100 is generally mounted and fixed by a motor fixing bracket 120, and its output shaft 110 and the lower eccentric wheel 210 are rotatably mounted, for example: by shaft hole matching, by bushing matching, by bearing 250 matching, etc. The output end of the motor 100 is the upper end of the output shaft 110. In order to facilitate the installation of the fixed gear 230, such as Figure 2 and Figure 3 As shown, the output end of the motor 100 is configured to have a D-shaped cross-section, and a D-shaped hole 231 is opened at the center of the gear 230 and the gear 230 is installed together with the output end of the motor 100 through the D-shaped hole 231 .

[0038] The eccentric wheel assembly is mainly composed of parts such as a lower eccentric wheel 210, an upper eccentric wheel 220, a gear 230 and a movable shaft seat 240; the lower eccentric wheel 210 is a carrier component of the eccentric wheel assembly, and is mainly used for the installation and setting of parts such as the upper eccentric wheel 220, the gear 230 and the movable shaft seat 240; the upper eccentric wheel 220 is a part of the upper and lower limit movable shaft seat 240, which is generally installed and fixed on the upper side of the lower eccentric wheel 210 through a connecting piece 221 or a connecting structure, and can also be a structure integrated with the lower eccentric wheel 210; the adjustment cavity formed between the upper eccentric wheel 220 and the lower eccentric wheel 210 is mainly used for installing transmission parts such as gears 230 and racks 242, and arranging limiting components such as the first limiting portion 211 and the second limiting portion 212; the movable shaft seat 240 is a movable carrier of the eccentric shaft 241, which can drive the eccentric shaft 241 to move to change the eccentric distance of the eccentric shaft 241.

[0039] The gear 230 and the rack 242 are transmission components that drive the movable shaft seat 240 to move. The gear 230 and the rack 242 are used for transmission. Not only is the transmission accuracy high, which is convenient for accurately controlling the eccentricity of the eccentric shaft 241, but also the direct force point during use is the meshing point of the gear 230 and the rack 242, which is beneficial to ensuring its service life; and because when the movable shaft seat 240 switches between the forward and reverse locking states, it will cause the overall center of gravity of the eccentric wheel assembly to change, so the eccentric wheel counterweights required for different eccentricities are different. The transmission through the gear 230 and the rack 242 is beneficial to make the change of the center of gravity linearly related to the change of the eccentricity, so as to better adjust the eccentric wheel assembly and reduce the noise and jitter caused by the change of its center of gravity.

[0040] The first limiting portion 211 and the second limiting portion 212 are respectively used to limit the extreme positions of the forward and backward movement of the movable shaft seat 240. The first limiting portion 211 and the second limiting portion 212 can be of various types, such as: a limiting lever, a limiting surface, a limiting screw, a limiting protrusion, etc.

[0041] In order to facilitate installation and protect the transmission components, and to limit the rack 242, the Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a mounting groove is provided at the upper portion of the lower eccentric wheel 210, and the front and rear groove walls of the mounting groove are respectively a first limiting portion 211 and a second limiting portion 212, and the gear 230 and the rack 242 are both located in the mounting groove.

[0042] In order to facilitate the installation and fixation of the upper eccentric wheel 220, as Figure 2 and Figure 3As shown, the left and right side groove walls of the installation groove extend upward to form a left connecting platform 213 and a right connecting platform 214, respectively. The upper eccentric wheel 220 is arranged on the lower eccentric wheel 210 and connected to the left connecting platform 213 and the right connecting platform 214 respectively through the connecting member 221. The formed left connecting platform 213 and the right connecting platform 214 facilitate the installation and fixing of the lower eccentric wheel 210 and the upper eccentric wheel 220 together, and can lift the upper eccentric wheel 220 to form a space that can accommodate the lower part of the movable shaft seat 240. The connecting member 221 is used to connect and fix parts, and it can be of various types, such as screws, bolts, pins, etc.

[0043] On the basis of the above, in order to facilitate assembly and form an eccentric wheel assembly with better integrity, Figure 2 , Figure 3 and Figure 4 As shown, the upper eccentric wheel 220 is provided with a U-shaped opening 222 located just above the mounting groove, the width of the U-shaped opening 222 is smaller than the width of the mounting groove, the left connecting platform 213, the right connecting platform 214 and the upper eccentric wheel 220 together enclose an installation space with a "convex" shape in the longitudinal section, and the shaft seat body of the movable shaft seat 240 is arranged in the installation space and is gap-matched therewith. The upper eccentric wheel 220 and the movable shaft seat 240 of this structure are matched and installed on the lower eccentric wheel 210, which not only makes the eccentric wheel assembly structure more stable, but also makes the various components of the eccentric wheel assembly closely matched during high-speed rotation, ensuring the stability of the overall structure of the movable shaft seat 240 in the forward and reverse locking state, and the noise generated during the working process is small.

[0044] In order to facilitate the installation of the upper eccentric wheel 220 and the lower eccentric wheel 210 and further improve the integrity of the eccentric wheel assembly, the upper eccentric wheel 220 is provided with a positioning structure that matches the lower eccentric wheel 210. The positioning structure can be of various types, such as positioning columns, positioning protrusions and grooves, etc. Preferably, combined with Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the positioning structure is a protrusion 223 provided at the rear end of the bottom surface of the upper eccentric wheel 220, and the protrusion 223 is embedded and matched between the rear ends of the left connecting platform 213 and the rear ends of the right connecting platform 214. The protrusion 223 has a simple structure and a good matching effect, which is conducive to processing and manufacturing and effectively improves the integrity of the eccentric wheel assembly.

[0045] In order to ensure the matching effect of the output shaft 110 of the motor 100 and the rotatable matching part of the lower eccentric wheel 210 and reduce friction when the output end of the motor 100 penetrates into the adjustment cavity, Figure 1 and Figure 2As shown, the eccentric wheel assembly also includes a bearing 250; a bearing hole is provided at the bottom of the lower eccentric wheel 210, and the bearing 250 is installed in the bearing hole; the output shaft 110 of the motor 100 is installed together with the inner hole of the bearing 250, and the output end of the motor 100 is the upper end of the output shaft 110.

[0046] The eccentric distance between the eccentric shaft 241 and the rotation center of the eccentric wheel assembly is generally determined according to the striking distance of the massage head. For example, when the motor 100 rotates forward, the striking distance of the massage head is 6 mm, and when the motor 100 rotates reversely, the striking distance of the massage head is 9 mm, it can be determined that the difference between e1 and e2 is 3 mm; for another example, when the motor 100 rotates forward, the striking distance of the massage head is 10 mm, and when the motor 100 rotates reversely, the striking distance of the massage head is 6 mm, it can be determined that the difference between e1 and e2 is 4 mm; in order to ensure the massage effect of customers massaging different positions, it is preferred to make the difference between e1 and e2 3 to 4 mm.

[0047] The present invention also provides a fascia gun capable of changing the amplitude to adjust the striking distance of the massage head, which comprises a housing and the above-mentioned massage drive mechanism, wherein the massage drive mechanism is arranged in the housing, the motor 100 is fixedly connected to the housing via a motor fixing bracket 120, and the piston rod 400 is movably connected to the housing via a sliding sleeve 410. The motor fixing bracket 120 is generally fixed to the motor 100 by screws, and the frame rod of the motor fixing bracket 120 is generally fixed to the stud in the housing by screws and vibration-damping washers.

[0048] In order to facilitate regulation, the fascia gun further includes a main control panel; the housing is provided with a motor forward and reverse control switch, and the motor 100 and the motor forward and reverse control switch are electrically connected to the main control panel respectively. When in use, the forward or reverse working mode of the motor 100 is adjusted by the motor forward and reverse control switch, so as to use a long striking distance massage in areas with more muscles and a short striking distance massage in areas with less muscles.

Claims

1. A massage drive mechanism, comprising a motor (100), an eccentric wheel assembly, a transmission arm (300) and a piston rod (400), wherein two ends of the transmission arm (300) are respectively hinged to an eccentric shaft (241) of the eccentric wheel assembly and a tail of the piston rod (400); characterized in that: The eccentric wheel assembly comprises a lower eccentric wheel (210), an upper eccentric wheel (220), a gear (230) and a movable shaft seat (240); the movable shaft seat (240) comprises a shaft seat body, an eccentric shaft (241) arranged on the upper part of the shaft seat body, and a rack (242) arranged on the lower part of the shaft seat body; The upper eccentric wheel (220) is arranged on the upper side of the lower eccentric wheel (210), and an adjustment cavity is formed between the upper eccentric wheel (220) and the lower eccentric wheel (210); a mounting groove is provided on the upper part of the lower eccentric wheel (210), and the front and rear groove walls of the mounting groove are respectively a first limiting portion (211) and a second limiting portion (212), and the gear (230) and the rack (242) are both located in the mounting groove; The output end of the motor (100) passes through the lower eccentric wheel (210) and extends into the adjustment cavity; the gear (230) is arranged in the adjustment cavity and mounted on the output end of the motor (100); the cross section of the output end of the motor (100) is in a "D" shape; a D-shaped hole (231) is provided at the center of the gear (230) and the gear (230) is mounted together with the output end of the motor (100) through the D-shaped hole (231); The movable shaft seat (240) is installed on the lower eccentric wheel (210) and / or the upper eccentric wheel (220), and is capable of moving along the tooth profile direction of the rack (242); the lower part of the movable shaft seat (240) is located in the adjustment cavity, and the rack (242) thereof is meshed with the gear (230); The regulating chamber is provided with a first limiting portion (211) and a second limiting portion (212) respectively located at the front and rear ends of the rack (242); when the movable shaft seat (240) moves to the point where the front end of the rack (242) abuts against the first limiting portion (211), the eccentric distance between the eccentric shaft (241) and the rotation center of the eccentric wheel assembly is e1; when the movable shaft seat (240) moves to the point where the rear end of the rack (242) abuts against the second limiting portion (212), the eccentric distance between the eccentric shaft (241) and the rotation center of the eccentric wheel assembly is e2, and e2≠e1.

2. The massage drive mechanism according to claim 1, characterized in that: The left and right side groove walls of the installation groove respectively extend upward to form a left connecting platform (213) and a right connecting platform (214); the upper eccentric wheel (220) is arranged on the lower eccentric wheel (210) and is respectively connected to the left connecting platform (213) and the right connecting platform (214) through a connecting piece (221).

3. The massage drive mechanism according to claim 2, characterized in that: The upper eccentric wheel (220) is provided with a U-shaped opening (222) located directly above the installation groove, the width of the U-shaped opening (222) is smaller than the width of the installation groove, the left connecting platform (213), the right connecting platform (214) and the upper eccentric wheel (220) together form an installation space with a "convex" shape in longitudinal section, and the shaft seat body of the movable shaft seat (240) is arranged in the installation space and is clearance-matched therewith.

4. The massage drive mechanism according to claim 2, characterized in that: The upper eccentric wheel (220) is provided with a positioning structure that matches the lower eccentric wheel (210).

5. The massage drive mechanism according to claim 4, characterized in that: The positioning structure is a protrusion (223) arranged at the rear end of the bottom surface of the upper eccentric wheel (220), and the protrusion (223) is embedded and matched between the rear ends of the left connecting platform (213) and the rear ends of the right connecting platform (214).

6. The massage drive mechanism according to any one of claims 1 to 5, characterized in that: The eccentric wheel assembly also includes a bearing (250); a bearing hole is provided at the bottom of the lower eccentric wheel (210), and the bearing (250) is installed in the bearing hole; the output shaft (110) of the motor (100) is mounted together with the inner hole of the bearing (250), and the output end of the motor (100) is the upper end of the output shaft (110).

7. The massage drive mechanism according to claim 6, characterized in that: The difference between e1 and e2 is 3 to 4 mm.

8. A fascia gun, comprising a housing, characterized in that: It also includes the massage drive mechanism according to any one of claims 1 to 7, wherein the massage drive mechanism is arranged in a shell, the motor (100) is fixedly connected to the shell via a motor fixing bracket (120), and the piston rod (400) is movably connected to the shell via a sliding sleeve (410).

9. The fascia gun according to claim 8, characterized in that: The housing also includes a main control board; a motor forward and reverse rotation control switch is arranged on the housing; the motor (100) and the motor forward and reverse rotation control switch are electrically connected to the main control board respectively.

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