Fascia gun

Abstract

The utility model discloses a fascia gun, relates to massage equipment technical field, the fascia gun includes shell, core subassembly and two massage head, core subassembly includes first mount, drive motor and second mount that distributes in proper order in the shell, drive motor is fixed on the second mount, the massage head is fixed on the first mount, and the drive motor is fixed on the second mount. A first eccentric wheel is arranged on an output shaft, facing the first fixing frame, of the driving motor, and the end, away from the driving motor, of the first eccentric wheel is rotationally connected with the first fixing frame. The first eccentric wheel and the second eccentric wheel are respectively in driving connection with two massage heads arranged outside the shell through a connecting rod mechanism so as to drive the two massage heads to move. The end, away from the driving motor, of the first eccentric wheel is rotationally connected with the first fixing frame, so that stress of two output shafts of the driving motor is balanced as much as possible, damage to parts is prevented, and the service life of the fascia gun is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of massage equipment technology, and in particular to a fascia gun. Background Technology

[0002] Fascia guns, as a common tool for muscle relaxation and rehabilitation, have been widely used by athletes, fitness enthusiasts, and in the physiotherapy field. Their core working principle is to stimulate muscles and fascia through high-frequency vibration, promoting blood circulation and relieving muscle tension. However, the motor, the core component of a fascia gun, determines its performance and durability. With increasing market demand, the design and functionality of fascia guns have continuously evolved, with some products adopting a dual-motor design to provide stronger power and better vibration effects.

[0003] However, the dual-axis motor needs to drive two massage heads simultaneously, which makes the motor prone to uneven load during long-term use or high-intensity mode, leading to damage to internal components and affecting the service life of the fascia gun. Utility Model Content

[0004] The main purpose of this invention is to propose a fascia gun that aims to solve the problem of uneven motor load in existing double-headed fascia guns.

[0005] To achieve the above objectives, the fascia gun proposed in this utility model includes:

[0006] case;

[0007] The movement assembly includes a first fixed frame, a drive motor, and a second fixed frame. The first fixed frame, the drive motor, and the second fixed frame are arranged sequentially along the length direction inside the housing. The drive motor is fixedly connected to the second fixed frame. A first eccentric wheel is provided on the output shaft of the drive motor facing the first fixed frame. The end of the first eccentric wheel away from the drive motor is rotatably connected to the first fixed frame. A second eccentric wheel is provided on the output shaft of the drive motor facing the second fixed frame.

[0008] Two massage heads are provided, at least partially outside the housing, and are respectively driven and connected to the first eccentric wheel and the second eccentric wheel via a linkage mechanism.

[0009] In one embodiment, the first fixing frame is arranged in an annular cylindrical shape and its outer surface abuts against the inner wall of the housing. The first fixing frame is detachably disposed in the housing. The first eccentric wheel is disposed in the first fixing frame. The side wall of the first fixing frame is provided with a first mounting hole for the linkage mechanism to pass through.

[0010] And / or, the second fixing frame is arranged in an annular cylindrical shape and its outer surface abuts against the inner wall of the housing. The second fixing frame is detachably disposed in the housing. The second eccentric wheel is disposed in the second fixing frame. The side wall of the second fixing frame is provided with a second mounting hole for the linkage mechanism to pass through.

[0011] In one embodiment, a limiting shaft is provided on the side of the first eccentric wheel away from the drive motor, and the limiting shaft is arranged to coincide with the axis of the output shaft of the drive motor toward the first fixed frame.

[0012] In one embodiment, the movement assembly further includes a mounting plate and a first bearing, the mounting plate being disposed on the first fixing frame, the first bearing being disposed on the mounting plate, and the limiting shaft being disposed within the shaft hole of the first bearing.

[0013] In one embodiment, the mechanism assembly further includes a first connecting rod, a first piston, a second connecting rod, and a second piston. The first connecting rod is rotatably connected to the first eccentric wheel and the first piston, respectively. The second connecting rod is rotatably connected to the second eccentric wheel and the second piston, respectively. The two massage heads are respectively disposed on the first piston and the second piston.

[0014] In one embodiment, the housing is further provided with a first through hole and a second through hole, and a first sleeve assembly and a second sleeve assembly are provided at a distance from the outside of the housing. The first sleeve assembly is located at the first through hole and connected to the first fixing frame, and the second sleeve assembly is located at the second through hole and connected to the second fixing frame. The first piston is movably located inside the first sleeve assembly, and the second piston is movably located inside the second sleeve assembly.

[0015] In one embodiment, the fascia gun further includes a plurality of screws, and the first sleeve assembly is connected to the first fixing frame and clamps the housing via the screws;

[0016] And / or, the second sleeve assembly is connected to the second fixing bracket by the screw and clamps the housing.

[0017] In one embodiment, a first limiting hole is also provided on the periphery of the first through hole on the housing, and the screw connecting the first sleeve assembly and the first fixing bracket passes through the first limiting hole;

[0018] And / or, the housing is further provided with a second limiting hole on the periphery of the second through hole, and the screw connecting the second sleeve assembly and the second fixing bracket passes through the second limiting hole.

[0019] In one embodiment, the first connecting rod includes a first connecting segment and a second connecting segment. The first connecting segment is rotatably connected to the first eccentric wheel, and the second connecting segment is rotatably connected to the second piston. The first connecting segment and the second connecting segment are detachably connected.

[0020] In one embodiment, the two output shafts of the drive motor are either aligned or spaced apart.

[0021] The technical solution of this utility model avoids damage to the motor due to uneven load by installing two fixed frames inside the housing of the fascia gun. Specifically, the fascia gun includes a housing, a core assembly, and two massage heads. The core assembly includes a first fixed frame, a drive motor, and a second fixed frame arranged sequentially inside the housing. The drive motor is fixedly mounted on the second fixed frame. A first eccentric wheel is mounted on the output shaft of the drive motor facing the first fixed frame, and the end of the first eccentric wheel away from the drive motor is rotatably connected to the first fixed frame. A second eccentric wheel is mounted on the output shaft of the drive motor facing the second fixed frame. The first and second eccentric wheels are respectively connected to the two massage heads located outside the housing through a linkage mechanism to drive the movement of the two massage heads. It is understood that because the drive motor is fixed on the second fixed frame, the distance between the first eccentric wheel and the second fixed frame is relatively large. Therefore, the lever arm of the first eccentric wheel is long when subjected to force, which can easily lead to damage to the drive motor. By rotatably connecting the end of the first eccentric wheel away from the drive motor to the first fixed frame, the force on the two output shafts of the drive motor is made as balanced as possible, preventing damage to components and extending the service life of the fascia gun. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 A schematic diagram of a structure of an embodiment of the fascia gun provided by this utility model;

[0024] Figure 2 An exploded view of an embodiment of the fascia gun provided by this utility model;

[0025] Figure 3 A schematic diagram of the disassembled structure of the core assembly in one embodiment of the fascia gun provided by this utility model;

[0026] Figure 4 This is a cross-sectional view of an embodiment of the fascia gun provided by this utility model.

[0027] Explanation of icon numbers:

[0028] 100. Fascia gun; 110. Housing; 110a. First through hole; 110b. Second through hole; 110c. First limiting hole; 110d. Second limiting hole; 120. Mechanism assembly; 111. First sleeve assembly; 112. Second sleeve assembly; 121. First fixing bracket; 121a. First mounting hole; 1211. Mounting plate; 1212. First bearing; 122. Drive motor; 123. Second fixing bracket; 123a. Second mounting hole; 124. First eccentric wheel; 1241. Limiting shaft; 125. Second eccentric wheel; 126. First connecting rod; 1261. First connecting section; 1262. Second connecting section; 127. First piston; 128. Second connecting rod; 129. Second piston; 130. Massage head; 140. Battery; 150. Circuit board assembly.

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] This utility model proposes a fascia gun.

[0034] Please see Figure 1 and Figure 2 In one embodiment of this utility model, the fascia gun 100 includes a housing 110, a core assembly 120, and two massage heads 130. The housing 110 is a long cylindrical shape and hollow inside. The core assembly 120 includes a first fixing frame 121, a drive motor 122, and a second fixing frame 123 arranged sequentially along the length of the housing 110. The bottom of the drive motor 122 is fixedly mounted on the second fixing frame 123 by screws. A first eccentric wheel 124 is provided on the output shaft of the drive motor 122 extending towards the first fixing frame 121. The end of the first eccentric wheel 124 away from the drive motor 122 is rotatably connected to the first fixing frame 121. A second eccentric wheel 125 is provided on the output shaft of the drive motor 122 extending towards the second fixing frame 123. The first eccentric wheel 124 and the second eccentric wheel 125 are respectively driven by a linkage mechanism to drive the two massage heads 130 arranged outside the housing 110 to move.

[0035] Understandably, since the bottom of the drive motor 122 is fixed to the second fixed frame 123 by screws, and the first eccentric wheel 124 is far from the second fixed frame 123, the lever arm of the first eccentric wheel 124 is long when subjected to force, making the output shaft of the drive motor 122 prone to tilting and damage. This solution transfers part of the force to the first fixed frame 121 by rotatably connecting the end of the first eccentric wheel 124 away from the drive motor 122 to the first fixed frame 121, so that the force on the two output shafts of the drive motor 122 is as balanced as possible, which can prevent damage to components and extend the service life of the fascia gun 100. It should be noted that since the second eccentric wheel 125 is set close to the connection point between the drive motor 122 and the second fixed frame 123, its lever arm is short when subjected to force, and no additional structure is needed for balancing the force.

[0036] In one embodiment, the first fixing frame 121 is arranged in an annular cylindrical shape and its outer surface abuts against the inner wall of the housing 110. The first fixing frame 121 is detachably disposed in the housing 110. The first eccentric wheel 124 is disposed in the first fixing frame 121. The side wall of the first fixing frame 121 is provided with a first mounting hole 121a for the linkage mechanism to pass through.

[0037] And / or, the second fixing frame 123 is arranged in an annular cylindrical shape and its outer surface abuts against the inner wall of the housing 110. The second fixing frame 123 is detachably disposed in the housing 110. The second eccentric wheel 125 is disposed in the second fixing frame 123. The side wall of the second fixing frame 123 is provided with a second mounting hole 123a for the linkage mechanism to pass through.

[0038] like Figures 3 to 4 As shown, in one embodiment of this utility model, the first fixing frame 121 and the second fixing frame 123 are both configured as circular hollow cylindrical structures, and the outer walls of the first fixing frame 121 and the second fixing frame 123 are attached to the inner wall of the housing 110. The second fixing frame 123 is provided with a plane for fixing the drive motor 122, and multiple screws are used to pass upward from the second fixing frame 123 to connect the drive motor 122. The first fixing frame 121 and the second fixing frame 123 are detachably arranged inside the housing 110 to facilitate product assembly.

[0039] Furthermore, a first mounting hole 121a is provided on the side wall of the first fixing frame 121, and a first eccentric wheel 124 is disposed inside the first fixing frame 121. One end of the linkage mechanism passes through the first mounting hole 121a and is connected to the first eccentric wheel 124, while the other end extends out of the housing 110 and is connected to the massage head 130. Similarly, a second mounting hole 123a is provided on the side wall of the second fixing frame 123 for another linkage mechanism to pass through. The drive motor 122 drives the two eccentric wheels to rotate, thereby driving the two massage heads 130 to perform high-frequency reciprocating motion. The two cylindrical fixing frames can maintain the stability of the two output shafts of the motor and make the force balanced, and improve the space utilization inside the housing 110, making the internal structure of the fascia gun 100 more compact.

[0040] In one embodiment, a limiting shaft 1241 is provided on the side of the first eccentric wheel 124 away from the drive motor 122, and the limiting shaft 1241 is arranged to coincide with the axis of the output shaft of the drive motor 122 toward the first fixed frame 121.

[0041] like Figure 3 and Figure 4 As shown, in one embodiment of this utility model, a shaft hole is provided at the bottom of the first eccentric wheel 124, and the output shaft of the upper end of the drive motor 122 is inserted into the shaft hole. A linkage mechanism is sleeved on the first eccentric wheel 124. A limiting shaft 1241 extends upward from the side of the first eccentric wheel 124 away from the drive motor 122. The limiting shaft 1241 is rotatably connected to the first fixed frame 121. When subjected to force, it transmits a portion of the force to the first fixed frame 121. The axis of the limiting shaft 1241 coincides with the axis of the output shaft of the drive motor 122, which simplifies the structure of the motor output shaft and the limiting shaft 1241, and makes the force transmission path straight, which helps to reduce mechanical friction and complex stress. The limiting shaft 1241 does not generate additional eccentric force, which can avoid unnecessary vibration, torque fluctuation or energy consumption, and helps to maintain the stable operation of the movement assembly 120 and extend its service life. In addition, this structure can also reduce noise, simplify the structure, make the design more compact, and facilitate installation and debugging.

[0042] In one embodiment, the movement assembly 120 further includes a mounting plate 1211 and a first bearing 1212. The mounting plate 1211 is disposed on the first fixing frame 121, the first bearing 1212 is disposed on the mounting plate 1211, and the limiting shaft 1241 is disposed in the shaft hole of the first bearing 1212.

[0043] like Figure 3As shown, to further reduce wear, in one embodiment of this utility model, a mounting plate 1211 is provided on the side of the first fixing frame 121 away from the drive motor 122. A first bearing 1212 is provided on the mounting plate 1211, and the limiting shaft 1241 of the first eccentric wheel 124 is inserted into the shaft hole of the first bearing 1212. The first bearing 1212 helps the eccentric wheel rotate and reduces friction and noise. Of course, in some other embodiments of this utility model, in addition to bearings, components such as bushings can also be used to limit the limiting shaft 1241 of the eccentric wheel; no specific limitation is made here.

[0044] In one embodiment, the mechanism assembly 120 further includes a first connecting rod 126, a first piston 127, a second connecting rod 128, and a second piston 129. The first connecting rod 126 is rotatably connected to the first eccentric wheel 124 and the first piston 127, respectively. The second connecting rod 128 is rotatably connected to the second eccentric wheel 125 and the second piston 129, respectively. Two massage heads 130 are respectively disposed on the first piston 127 and the second piston 129.

[0045] like Figure 2 and Figure 3 As shown, in one embodiment of this utility model, the mechanism assembly 120 further includes two linkage mechanisms. One linkage mechanism includes a first link 126 and a first piston 127. Bearings are embedded at both ends of the first link 126. One end of the first link 126 is rotatably sleeved on a first eccentric wheel 124, and the other end is rotatably connected to the first piston 127. The drive motor 122 drives the first eccentric wheel 124 to rotate, and the first piston 127 and the massage head 130 reciprocate through the bearing-bearing first link 126. Similarly, the other linkage mechanism includes a second link 128 and a second piston 129. Two bearings are also provided at both ends of the second link 128 and are respectively sleeved on the second eccentric wheel 125 and the second piston 129. It can be understood that using a dual-axis motor in conjunction with two linkage mechanisms for driving makes the internal components of the fascia gun 100 compact, which is beneficial to reducing the overall size of the fascia gun 100.

[0046] In one embodiment, the housing 110 is further provided with a first through hole 110a and a second through hole 110b. A first sleeve assembly 111 and a second sleeve assembly 112 are provided at intervals outside the housing 110. The first sleeve assembly 111 is located at the first through hole 110a and is connected to the first fixing bracket 121. The second sleeve assembly 112 is located at the second through hole 110b and is connected to the second fixing bracket 123. The first piston 127 is movably located inside the first sleeve assembly 111, and the second piston 129 is movably located inside the second sleeve assembly 112.

[0047] like Figure 2As shown, in one embodiment of the present invention, the housing 110 is provided with a first through hole 110a and a second through hole 110b at intervals along the length direction. Specifically, the first through hole 110a is connected to the first mounting hole 121a of the first fixing bracket 121, which facilitates the passage of the first connecting rod 126; the second through hole 110b is connected to the second mounting hole 123a of the second fixing bracket 123, which facilitates the passage of the second connecting rod 128. The housing 110 is also provided with a first sleeve assembly 111 and a second sleeve assembly 112. The first sleeve assembly 111 is located at the first through hole 110a outside the housing 110, and the first piston 127 is movably located inside the first sleeve assembly 111. The second sleeve assembly 112 is located at the second through hole 110b outside the housing 110 and is spaced apart from the first sleeve assembly 111. The second piston 129 is movably located inside the second sleeve assembly 112. The two sleeve assemblies are designed to be detachable from the housing 110, which is beneficial for the assembly of the components. The two sleeve assemblies are used to provide support for the two massage heads 130 respectively, which can improve the structural strength of the fascia gun 100.

[0048] In one embodiment, the fascia gun 100 further includes a plurality of screws, and the first sleeve assembly 111 is connected to the first fixing frame 121 by the screws and clamps the housing 110;

[0049] And / or, the second sleeve assembly 112 is connected to the second fixing bracket 123 by screws and clamps the housing 110.

[0050] like Figure 2 and Figure 4 As shown, in one embodiment of the present invention, the first sleeve assembly 111 is connected to the first fixing frame 121 by a plurality of screws passing through the first through hole 110a, and the second sleeve assembly 112 is connected to the second fixing frame 123 by a plurality of screws passing through the second through hole 110b. At least part of the ends of the first sleeve assembly 111 and the second sleeve assembly 112 away from the massage head 130 are in contact with the outer side wall of the housing 110, that is, the ends of the first sleeve assembly 111 and the second sleeve assembly 112 that are in contact with the housing 110 have curved surfaces.

[0051] Using screws to connect with the fixing frame, the first sleeve assembly 111 and the first fixing frame 121 are connected and clamp the housing 110 and achieve positioning. Similarly, the second sleeve assembly 112 and the second fixing frame 123 are connected and clamp the housing 110 and achieve positioning. The first fixing frame 121 and the second fixing frame 123 do not need to be provided with additional connection structures to connect with the housing 110, making the structure simpler and easier to assemble and produce.

[0052] In one embodiment, a first limiting hole 110c is also provided on the periphery of the first through hole 110a on the housing 110, and the screw connecting the first sleeve assembly 111 and the first fixing bracket 121 passes through the first limiting hole 110c.

[0053] And / or, a second limiting hole 110d is also provided on the periphery of the second through hole 110b on the housing 110, and the screws connecting the second sleeve assembly 112 and the second fixing bracket 123 are inserted into the second limiting hole 110d.

[0054] like Figure 2 As shown, in one embodiment of this utility model, in addition to the direct connection between the fixing bracket and the sleeve assembly using screws, the periphery of the first through hole 110a is also provided with multiple first limiting holes 110c. The curved surface of the first sleeve assembly 111 that fits against the housing 110 is also provided with through holes aligned with the first limiting holes 110c. Screws pass through the through holes and first limiting holes 110c inside the first sleeve assembly 111 and are screwed into the threaded hole of the first fixing bracket 121, thus limiting the connection between the first sleeve assembly 111 and the first fixing bracket 121, preventing them from sliding relative to the housing 110, and improving the connection stability of the components. Similarly, the periphery of the second through hole 110b is also provided with multiple second limiting holes 110d, and screws are used to connect the second fixing bracket 123 and the second sleeve assembly 112 through the second limiting holes 110d.

[0055] In one embodiment, the first connecting rod 126 includes a first connecting section 1261 and a second connecting section 1262. The first connecting section 1261 is rotatably connected to the first eccentric wheel 124, and the second connecting section 1262 is rotatably connected to the second piston 129. The first connecting section 1261 and the second connecting section 1262 are detachably connected.

[0056] like Figure 3 and Figure 4 As shown, in one embodiment of this utility model, in order to facilitate product assembly, the first connecting rod 126 includes a first connecting section 1261 and a second connecting section 1262. Specifically, after the drive motor 122 is connected to the first fixing bracket 121 and the second fixing bracket 123, it can be installed into the housing 110 from the end opening of the housing 110, so that the second mounting hole 123a of the second fixing bracket 123 is aligned with the second through hole 110b. The second connecting rod 128 can be installed by using the second through hole 110b.

[0057] Since the second eccentric wheel 125 needs to be inserted into the first bearing 1212 on the first fixed frame 121, the first connecting rod 126 cannot be directly installed using the first through hole 110a. Therefore, the first connecting rod 126 is divided into a first connecting section 1261 and a second connecting section 1262. During assembly, the first connecting section 1261 is first fitted onto the first eccentric wheel 124, and then the mounting plate 1211 and the first bearing 1212 are fixed onto the first fixed frame 121. The first connecting section 1261 is relatively short and can be installed into the housing 110 along with the first fixed frame 121. After the first mounting hole 121a and the first through hole 110a are aligned, the second connecting section 1262 is then fixedly connected to the first connecting section 1261.

[0058] Furthermore, to enhance connection strength, a slot is provided on the first connecting segment 1261, and a protrusion is provided on the second connecting end. The protrusion is inserted into the slot, and then screws, bolts, or other components are used to connect the first connecting segment 1261 and the second connecting segment 1262. This structure allows the drive motor 122, the first fixing bracket 121, and the second fixing bracket 123 to be assembled into a single structure and then installed in the housing 110, greatly reducing assembly difficulty and making the most of the internal space of the housing.

[0059] In one embodiment, the two output shafts of the drive motor 122 are either aligned or spaced apart.

[0060] like Figure 4 As shown, in one embodiment of this utility model, the rotation axes of the upper and lower output shafts of the drive motor 122 coincide and extend along the length of the housing 110. The coincident axes make the drive motor 122 compact, saving internal space in the housing 110, effectively reducing the size of the device, and eliminating the need for a complex transmission system, which helps reduce the number of mechanical connecting parts. In some other embodiments of this utility model, in dual-axis motors with non-coincident axes, each axis can bear different loads, resulting in higher load-bearing capacity and greater stability. The independent driving of the two axes allows the fascia gun 100 to have different working modes, that is, the movement frequencies of the two massage heads 130 can be different to meet different scenario requirements. The choice of which mode to use is not specifically limited here and can be selected according to the needs.

[0061] In addition, in this embodiment, the fascia gun 100 also includes a battery 140 and a circuit board assembly 150. The battery 140 is disposed inside the housing 110 and is arranged along the length of the housing 110. The circuit board assembly 150 is disposed on the end cap of the housing 110 and is electrically connected to the battery 140 and the drive motor 122. The end cap is provided with physical buttons, which allow the user to operate the fascia gun 100. The housing 110 is cylindrical in shape for easy hand gripping, and its internal structure is reasonable to make the structure compact and small in size, and also makes disassembly and assembly simpler.

[0062] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A fascia gun, characterized in that, include: case; The movement assembly includes a first fixed frame, a drive motor, and a second fixed frame. The first fixed frame, the drive motor, and the second fixed frame are arranged sequentially along the length direction inside the housing. The drive motor is fixedly connected to the second fixed frame. A first eccentric wheel is provided on the output shaft of the drive motor facing the first fixed frame. The end of the first eccentric wheel away from the drive motor is rotatably connected to the first fixed frame. A second eccentric wheel is provided on the output shaft of the drive motor facing the second fixed frame. Two massage heads are provided, at least partially outside the housing, and are respectively driven and connected to the first eccentric wheel and the second eccentric wheel via a linkage mechanism.

2. The fascia gun as described in claim 1, characterized in that, The first fixing frame is arranged in an annular cylindrical shape and its outer surface abuts against the inner wall of the housing. The first fixing frame is detachably disposed in the housing. The first eccentric wheel is disposed in the first fixing frame. The side wall of the first fixing frame is provided with a first mounting hole for the linkage mechanism to pass through. And / or, the second fixing frame is arranged in an annular cylindrical shape and its outer surface abuts against the inner wall of the housing. The second fixing frame is detachably disposed in the housing. The second eccentric wheel is disposed in the second fixing frame. The side wall of the second fixing frame is provided with a second mounting hole for the linkage mechanism to pass through.

3. The fascia gun as described in claim 2, characterized in that, The first eccentric wheel has a limiting shaft on the side away from the drive motor, and the limiting shaft is arranged to coincide with the axis of the output shaft of the drive motor toward the first fixed frame.

4. The fascia gun as described in claim 3, characterized in that, The movement assembly also includes a mounting plate and a first bearing. The mounting plate is disposed on the first fixing frame, the first bearing is disposed on the mounting plate, and the limiting shaft is disposed in the shaft hole of the first bearing.

5. The fascia gun as described in any one of claims 1 to 3, characterized in that, The mechanism assembly further includes a first connecting rod, a first piston, a second connecting rod, and a second piston. The first connecting rod is rotatably connected to the first eccentric wheel and the first piston, respectively. The second connecting rod is rotatably connected to the second eccentric wheel and the second piston, respectively. The two massage heads are respectively disposed on the first piston and the second piston.

6. The fascia gun as described in claim 5, characterized in that, The housing is also provided with a first through hole and a second through hole. A first sleeve assembly and a second sleeve assembly are provided at intervals outside the housing. The first sleeve assembly is located at the first through hole and connected to the first fixing frame. The second sleeve assembly is located at the second through hole and connected to the second fixing frame. The first piston is movably located inside the first sleeve assembly, and the second piston is movably located inside the second sleeve assembly.

7. The fascia gun as described in claim 6, characterized in that, The fascia gun also includes a plurality of screws, and the first sleeve assembly is connected to the first fixing frame and clamps the housing via the screws; And / or, the second sleeve assembly is connected to the second fixing bracket by the screw and clamps the housing.

8. The fascia gun as described in claim 7, characterized in that, The housing is also provided with a first limiting hole on the periphery of the first through hole, and the screw connecting the first sleeve assembly and the first fixing bracket passes through the first limiting hole. And / or, the housing is further provided with a second limiting hole on the periphery of the second through hole, and the screw connecting the second sleeve assembly and the second fixing bracket passes through the second limiting hole.

9. The fascia gun as described in claim 5, characterized in that, The first connecting rod includes a first connecting section and a second connecting section. The first connecting section is rotatably connected to the first eccentric wheel, and the second connecting section is rotatably connected to the second piston. The first connecting section and the second connecting section are detachably connected.

10. The fascia gun as described in claim 1, characterized in that, The two output shafts of the drive motor are either aligned or spaced apart.

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