Double-head fascia gun

Abstract

The utility model relates to a double-head fascia gun. The double-head fascia gun comprises a main shell, a massage driving assembly and massage heads, two groups of massage driving assemblies are mounted in the main shell, each group of massage driving assembly comprises a driving motor and a transmission mechanism, and an output shaft of the driving motor is connected with the transmission mechanism; and each group of massage driving components is connected with one massage head in a control manner through the transmission mechanism. According to the improved double-head fascia gun, two sets of independent driving motors are adopted, a transmission mechanism controls two massage heads to move, two sets of driving systems can achieve independent control of the double massage heads, and differential requirements are met; the two massage driving assemblies run in a load-sharing mode, and the service life of the motor is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of massage products. Background Technology

[0002] As a massage tool, the fascia gun achieves deep muscle relaxation through high-frequency vibration. Current dual-head fascia guns mostly employ a single-motor drive structure, where a single drive motor, in conjunction with a complex linkage mechanism, synchronously drives two massage heads in reciprocating motion. While this integrated transmission structure enables simultaneous operation of both heads, it has significant limitations in practical use: First, the dual massage heads are constrained by a single power source, making it impossible to independently adjust differentiated vibration parameters (such as amplitude and frequency), thus failing to meet the personalized needs of different muscle groups for impact intensity and vibration patterns. Second, the transmission system must balance the movement of both heads, leading to a more complex mechanical structure, increased energy loss, and a higher risk of failure. Third, a single motor is easily damaged during prolonged high-load operation, affecting the equipment's lifespan.

[0003] Therefore, there is room for improvement in existing dual-head fascia guns. Utility Model Content

[0004] The technical problem solved by this disclosure is to provide a dual-head fascia gun with an improved drive structure.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a double-headed fascia gun, the fascia gun including a main shell, a massage drive assembly and a massage head; two sets of the massage drive assemblies are installed in the main shell, each set of the massage drive assembly includes a drive motor and a transmission mechanism, the output shaft of the drive motor is connected to the transmission mechanism; each set of the massage drive assembly is controlled and connected to a massage head through its transmission mechanism.

[0006] As described above, the two massage heads of the dual-head fascia gun are mounted parallel to each other on one side of the main housing, and the two massage heads are spaced a predetermined distance apart from each other on the main housing.

[0007] As described above, the dual-head fascia gun has a transverse portion, and two opposing ends of the transverse portion are respectively connected to downwardly extending longitudinal portions. The interiors of the transverse portion and each of the longitudinal portions are hollow and interconnected. Two sets of massage drive components are respectively installed at both ends of the main housing, and the transmission mechanism of each set of massage drive components passes through the adjacent longitudinal portions to connect with the corresponding massage head.

[0008] As described above, each of the drive motors of the double-headed fascia gun has a mounting bracket with a through hole; the main shell includes a first half shell and a second half shell, which are spliced ​​and fixed together; the first half shell is provided with a sleeve post, and the second half shell is provided with a socket hole; the sleeve post passes through the through hole and is inserted into the socket hole to fix the mounting bracket.

[0009] As described above, the dual-headed fascia gun includes a control component, which is mounted in the middle section of the transverse portion and is signal-connected to the two sets of massage drive components; the control component is configured with one or more of the following functional units:

[0010] An independent start / stop unit is provided to independently control a group of the massage drive components;

[0011] A linkage start / stop unit is used to synchronously control the two sets of massage drive components;

[0012] An independent power regulation unit is provided to independently control the power of a group of the massage drive components;

[0013] A linkage power adjustment unit is used to synchronously control the power of the two sets of massage drive components.

[0014] As described above, the dual-head fascia gun also includes two sets of horizontally distributed power supply components, which are installed in the middle section of the horizontal part. Each set of power supply components is electrically connected to one set of massage drive components nearby. Each set of power supply components uses a rechargeable battery, and the side end face of the horizontal part is provided with charging ports for the two sets of power supply components.

[0015] As described above, in a dual-head fascia gun, at least one of the massage heads is equipped with a heating element, which is electrically connected to the corresponding power supply component.

[0016] As described above, the transmission mechanism of the dual-head fascia gun includes an eccentric wheel, a swing arm, and a piston. The eccentric wheel is connected to the output shaft of the drive motor. An eccentric shaft is provided on the eccentric wheel, which is offset from the output shaft. One end of the swing arm is rotatably mounted on the eccentric shaft, and the end of the swing arm opposite to the eccentric shaft is rotatably connected to the piston. The massage head is mounted on the end of the piston opposite to the swing arm. The rotational motion output by the output shaft of the drive motor is converted by the transmission mechanism to drive the massage head to reciprocate linearly through the piston.

[0017] As described above, in the dual-head fascia gun, each of the longitudinal sections is fixedly fitted with a guide cylinder, and the piston is vertically and retractably fitted into the guide cylinder, with the outer wall of the piston fitting against the inner wall of the guide cylinder.

[0018] As described above, the dual-head fascia gun is equipped with multiple massage heads with different functions; the transmission mechanism adopts a detachable structure and is connected to the massage heads so as to switch between different massage heads.

[0019] The beneficial effects of this disclosure are as follows: The improved dual-head fascia gun uses two independent drive motors and transmission mechanisms to control the movement of the two massage heads. Compared with the traditional single-motor drive scheme, the two drive systems can achieve independent control of the two massage heads to meet differentiated needs; the dual-motor split-load operation can avoid problems such as structural damage caused by long-term high-load operation of a single machine, which is conducive to extending the service life of the motor; when one set of motor transmission mechanisms fails, the other set can still work, avoiding the overall paralysis caused by a single point of failure in the traditional scheme. Attached Figure Description

[0020] Some specific embodiments of the present invention will now be described in detail by way of example and not limitation, with reference to the accompanying drawings, in which the same reference numerals designate the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0021] In the attached image:

[0022] Figure 1 This is a schematic diagram of one embodiment of the fascia gun of this utility model;

[0023] Figure 2 This is an exploded view of Embodiment 1 of the fascia gun of this utility model;

[0024] Figure 3 This is a schematic diagram of the massage drive component in Embodiment 1 of the fascia gun of this utility model;

[0025] Figure 4 This is a cross-sectional schematic diagram of the massage drive component in Embodiment 1 of the fascia gun of this utility model;

[0026] Figure 5 This is an exploded view of the massage drive component in Embodiment 1 of the fascia gun of this utility model;

[0027] Figure 6 This is a schematic diagram of Embodiment 2 of the fascia gun of this utility model;

[0028] Figure 7 This is a schematic diagram of the explosion of the second massage head of the fascia gun of this utility model;

[0029] The markings in the image are explained as follows:

[0030] 1. Fascia gun; 101. Horizontal part; 102. Longitudinal part; 103. First half-shell; 104. Second half-shell; 105. Insertion post; 106. Socket hole; 107. Soft pad; 2. Massage head; 201. First massage head; 202. Second massage head; 2021. Base; 2022. Heating element; 2023. Cover; 2024. Circular silicone sleeve; 3. Massage drive assembly; 30. Drive motor; 301. Output shaft; 302. Through hole; 31. Transmission mechanism; 311. Eccentric wheel; 312. Eccentric shaft; 313. Swing rod; 3130. Bearing; 314. Piston; 315. Guide cylinder; 4. Power supply assembly; 5. Control assembly. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0032] Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model. Unless otherwise defined, the technical or scientific terms used in this disclosure should be understood in their ordinary sense by those skilled in the art to which this utility model pertains.

[0033] The terms “first,” “second,” and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “a,” “one,” or “the” do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “including” or “contains” mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects. The terms “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0034] See appendix Figure 1-5The image shows a dual-headed fascia gun. The fascia gun 1 includes a main shell, a massage drive assembly 3, and a massage head 2. Two sets of massage drive assemblies 3 are installed in the main shell. Each set of massage drive assemblies 3 includes a drive motor 30 and a transmission mechanism 31. The output shaft 301 of the drive motor 30 is connected to the transmission mechanism 31. Each set of massage drive assemblies 3 is controlled to connect to a massage head 2 via its transmission mechanism 31.

[0035] The main shell of the fascia gun 1 can be made of plastic, metal or other materials. An installation space is formed inside the main shell to accommodate the massage drive component 3, etc. The main shell is equipped with two massage heads, each massage head 2 has a drive motor 30 and a transmission mechanism 31, which facilitates independent adjustment of the two massage heads 2 and provides a wider range of massage modes.

[0036] Two massage heads 2 are mounted on the same side of the main shell, parallel to each other, and spaced a predetermined distance apart on the main shell. When using the fascia gun 1, the two parallel massage heads 2 can simultaneously contact different massage areas and perform massage. For areas with abundant muscle tissue, such as the legs, that are large or long, the spaced massage heads can simultaneously massage a larger area, improving massage efficiency and accelerating muscle relaxation. The distance between the two massage heads 2 also needs to consider the space required for the user's hand. For example, if the distance is 10cm or more, the portion of the main shell with this gap can be used as a handle, allowing the user to hold the fascia gun 1 and operate the two massage heads 2 to massage the body.

[0037] In some embodiments, the two massage heads can be parallel and facing the same direction; in other embodiments, the two massage heads can also be located at opposite ends of the main housing and facing opposite directions, which can be used to perform fascia relaxation for two different users, solving the problem that existing fascia guns can only be used by one person, expanding the diversity of product use, and making the product more functional.

[0038] In some embodiments, the main shell has a transverse portion 101, and two opposing ends of the transverse portion 101 are respectively connected to downwardly extending longitudinal portions 102. The interiors of the transverse portion 101 and each of the longitudinal portions 102 are hollow and interconnected. Two sets of massage drive components 3 are respectively installed at both ends of the main shell, and the transmission mechanism 31 of each set of massage drive components 3 passes through the adjacent longitudinal portions 102 to connect with the corresponding massage head 2.

[0039] The horizontal portion 101 extends along a horizontal straight line, and two vertical portions 102 are connected to the bottom side of the horizontal portion 101. Both the horizontal portion 101 and the vertical portions 102 are rod-shaped and have a hollow and interconnected interior to accommodate the installation of the massage drive assembly 3.

[0040] Preferably, each drive motor 30 is horizontally arranged at both ends of the transverse portion 101, with the output shaft 301 of the drive motor 30 facing the middle section of the transverse portion 101. The connection position of the longitudinal portion 102 corresponds to the output shaft 301 of the adjacent drive motor 30, so that one end of the transmission mechanism 31 is connected to the corresponding output shaft 301, and the other end extends downward to the longitudinal portion 102 and is connected to the external massage head 2.

[0041] Thus, the layout of the various structures within the main shell is balanced and reasonable, so that the horizontal part 101 and the vertical part 102 have appropriate dimensions. The middle section of the horizontal part 101, located between the two massage heads 2, is easy to hold as a handle, while the vertical part 102 has a corresponding length while accommodating the transmission mechanism 31. It has a certain height difference with the horizontal part 101 so as to perform massage operations on the human body with complex curved surface structures.

[0042] Preferably, a soft pad 107 is provided on the top surface of the transverse portion 101, that is, on the side opposite to the massage head 2, to improve the tactile feel when held by the user.

[0043] In some embodiments, the transmission mechanism 31 includes an eccentric wheel 311, a rocker arm 313, and a piston 314; the eccentric wheel 311 is connected to the output shaft 301 of the drive motor 30, the eccentric wheel 311 is provided with an eccentric shaft 312, the eccentric shaft 312 is offset from the output shaft 301, one end of the rocker arm 313 is rotatably mounted on the eccentric shaft 312, and the end of the rocker arm 313 opposite to the eccentric shaft 312 is rotatably connected to the piston 314, and the massage head 2 is mounted on the end of the piston 314 opposite to the rocker arm 313; the rotational motion output by the output shaft 301 of the drive motor 30 is converted by the transmission mechanism 31 so as to drive the massage head 2 to reciprocate linearly through the piston 314.

[0044] The output shaft 301 of the drive motor 30 outputs a rotation action, which drives the eccentric wheel 311 to rotate around the output shaft 301. The eccentric shaft 312 deviates from the output shaft 301. Therefore, under the drive of the eccentric wheel 311, the eccentric shaft 312 forms a circular motion with the output shaft 301 as the center. The upper end of the rocker arm 313 is mounted on the eccentric shaft 312 and is driven by the eccentric shaft 312. Since the rocker arm 313 can rotate relative to the eccentric shaft 312, it can prevent the rocker arm 313 and the piston 314 as a whole from undergoing circular motion around the output shaft 301 under the drive of the eccentric shaft 312. At the same time, the lower end of the rocker arm 313 is rotatably connected to the piston 314. By rotating the rocker arm 313 relative to the piston 314, the lateral force generated when the rocker arm 313 moves with the eccentric shaft 312 is eliminated, so that the piston 314 presents a longitudinal linear reciprocating motion in the longitudinal part 102, driving the corresponding massage head 2 to form a tapping massage action.

[0045] Bearings can be installed at the connection between the rocker arm 313 and the eccentric shaft 312 and piston 314 to enhance the smoothness and stability of the rocker arm 313's movement. For example, a hole can be formed at the upper end of the rocker arm 313, and a bearing 3130 can be installed in the hole. The output shaft 301 is connected to the inner ring of the bearing 3130 and locked with screws, while the outer ring of the bearing 3130 is fixed to the hole.

[0046] Furthermore, a guide cylinder 315 is fixedly installed in each of the longitudinal portions 102. The piston 314 is vertically and movably fitted into the guide cylinder 315. The outer wall of the piston 314 is in contact with the inner wall of the guide cylinder 315. The lower end of the piston 314 passes through the guide cylinder 315 and is connected to the massage head 2. The guide cylinder 315 extends longitudinally and is fixedly installed in the longitudinal portion 102. The inner wall of the guide cylinder 315 is in contact with and abuts against the outer wall of the piston 314, thereby guiding the piston 314 to perform a stable linear reciprocating motion.

[0047] In some embodiments, each of the drive motors 30 has a mounting bracket with a through hole 302; the main housing includes a first half-shell 103 and a second half-shell 104, which are spliced ​​and fixed together. The first half-shell 103 is provided with a sleeve post 105, and the second half-shell 104 is provided with a socket hole 106; the sleeve post 105 passes through the through hole 302 and is inserted into the socket hole 106 to fix the mounting bracket.

[0048] The main shell is assembled from the first half shell 103 and the second half shell 104. The massage drive component 3 can be installed on one half shell and then the other half shell can be closed and assembled with it, which helps to improve the assembly convenience of the fascia gun 1. The two half shells can be locked together by buckles, screws, etc.

[0049] To facilitate the assembly of the drive motor 30, a mounting bracket is provided for the drive motor 30 in this embodiment. The mounting bracket is fixedly mounted to the stator of the drive motor 30. A through hole 302 is formed on the mounting bracket. The sleeve post 105 on the first half-shell 103 passes tightly through the through hole 302 and reaches the socket hole 106 of the second half-shell 104. Thus, the mounting bracket is fixed by assembling the main shell.

[0050] The outer contour of the insert post 105 matches the inner contour of the through hole 302. Both can be shaped with side cuts. In this case, the mounting bracket engages with a single insert post 105 on the main housing through a single through hole 302, thus providing a certain degree of stability. If the insert post 105 is cylindrical and the through hole 302 is circular, to prevent circumferential rotation of the insert post 105 relative to the through hole 302, it is preferable to provide two or more through holes 302 on a single mounting bracket. Correspondingly, the number of insert posts 105 and socket holes 106 corresponds to the number of through holes 302, allowing for one-to-one matching and connection. Thus, a single mounting bracket has two or more fixing points with the main housing, which helps ensure the stability of the mounting bracket.

[0051] Preferably, reinforcing ribs are provided between each through hole 302 on the mounting bracket, between each sleeve post 105 at the corresponding end of the main shell, and between each sleeve hole 106, to further enhance the strength and stability of the connection between the main shell and the mounting bracket.

[0052] In some embodiments, the fascia gun 1 includes a control component 5, which is mounted in the middle section of the transverse portion 101 and is signal-connected to the two sets of massage drive components 3. The control component 5 generally includes a circuit board, circuit function units mounted on the circuit board, and buttons exposed on the main housing. Mounting these structures in the middle section of the transverse portion 101 facilitates operation by the user when holding the fascia gun 1.

[0053] The functional units of control component 5 can typically be triggered by buttons or by a mobile app via wireless communication, and include one or more of the following:

[0054] An independent start / stop unit is provided to independently control one set of massage drive components 3; for example, a double-headed fascia gun 1 is equipped with two sets of independent start / stop units, whose operation is presented to the user in the form of two buttons. The user presses one button to issue a command to start one set of massage drive components 3, and the corresponding massage head 2 is in working state, while the other massage drive component 3 is controlled to start and stop by the other button. Thus, the user can choose to start one of the massage heads 2 at will.

[0055] A linkage start-stop unit is provided to synchronously control the two sets of massage drive components 3. For example, a linkage start-stop unit is provided on the double-headed fascia gun 1. Its command operation is presented to the user in the form of a single button. The user operates the button to synchronously control the two sets of massage drive components 3, and the two massage heads 2 start or stop at the same time.

[0056] An independent power adjustment unit is provided to independently control the power of a group of massage drive components 3; for example, two independent power adjustment units are provided on the dual-head fascia gun 1, and their operation is presented to the user in the form of two buttons. The user operates one of the buttons to control the power of the corresponding drive massage component, so as to adjust the speed and force of the massage head 2.

[0057] A linkage power adjustment unit is provided to synchronously control the power of the two sets of massage drive components 3. For example, a linkage power adjustment unit is provided on the dual-head fascia gun 1, and its command operation is presented to the user in the form of a single button. When the user presses the button, the power of the two sets of massage drive components 3 is synchronously controlled, and the speed and force of the two massage heads 2 are adjusted at the same time.

[0058] In some embodiments, the fascia gun 1 further includes two sets of horizontally distributed power supply components 4, which are installed in the middle section of the horizontal part 101. Each set of power supply components 4 is electrically connected to a set of massage drive components 3 nearby. Each set of power supply components 4 uses a rechargeable battery, and the side end face of the horizontal part 101 is provided with charging ports for the two sets of power supply components 4.

[0059] Two sets of power supply components 4 are horizontally arranged in the main shell and connected to the adjacent massage drive components 3, which simplifies the internal structure of the fascia gun 1. The fascia gun 1 is powered by a rechargeable battery, eliminating the need for a cord and making it more convenient to use. The power supply of the massage drive components 3 is independent of each other. When one set of power is depleted, the other set of power supply components 4 continues to supply power to ensure the operation of the corresponding massage head 2, which helps to extend the usage time of the fascia gun 1 and reduce the charging frequency of the fascia gun 1.

[0060] The charging port is located on the side end face of the horizontal part 101. It is usually a single port that can simultaneously replenish the power of two sets of power supply components 4. The charging management circuit can detect the power consumption of the two sets of power supply components 4 and prioritize charging the power supply component 4 that consumes more power.

[0061] As attached Figure 6-7 As shown, a single fascia gun 1 can be configured with multiple massage heads 2 with different functions, and the connection between the transmission mechanism 31 and the massage head 2 is detachable, such as threaded connection, snap-fit ​​connection or interference fit, so that users can switch to install different massage heads 2 for use.

[0062] The functions of the massage heads 2 can be distinguished based on whether they are heated. The first massage head 201 is a regular massage head 2 without heating function. The first massage head 201 is connected to the piston 314 of the transmission mechanism 31 through a threaded structure, and its end is covered with a conical silicone sleeve. The second massage head 202 is a heated massage head 2 with heating function. The second massage head 202 includes a base 2021, which is connected to the piston 314 of the transmission mechanism 31 by threads. A heating element 2022 connected to the power supply component 4 is installed inside the base 2021. The front end of the base 2021 is sealed by a cap 2023 and then covered with a circular silicone sleeve 2024.

[0063] Specifically, a single fascia gun 1 can be configured with two first massage heads 201 and at least one second massage head 202. Users can install two first massage heads 201 at the same time for use, or switch one or both of them to the second massage head 202 for use.

[0064] The function of the massage head 2 can be distinguished according to its shape. For example, the end of the massage head 2 may have multiple columnar massage structures, multiple spherical massage structures, or a planar massage structure. The function of the massage head 2 can also be distinguished according to its firmness, and so on.

[0065] In summary, the improved dual-head fascia gun features independent massage drive components for each massage head, allowing for independent control of each head, such as start / stop and power adjustment, enriching massage modes and enhancing the user experience. The separate operation of the two massage drive components helps extend the motor's lifespan. The improved dual-head fascia gun achieves breakthrough improvements in performance, reliability, and user experience, providing a new technological path for the further specialization and intelligentization of fascia guns.

[0066] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, this utility model can have various modifications, combinations, and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A double-head fascia gun, characterized in that: the fascia gun comprises a main shell, massage driving assemblies, and massage heads; two groups of the massage driving assemblies are installed in the main shell, each group of the massage driving assemblies comprises a driving motor and a transmission mechanism, and an output shaft of the driving motor is connected with the transmission mechanism; each group of the massage driving assemblies is connected with one massage head via the transmission mechanism. 2.The double-head fascia gun of claim 1, characterized in that: the two massage heads are installed on one side of the main shell in parallel with each other, and the two massage heads are spaced apart by a preset distance on the main shell. 3.The double-head fascia gun of claim 2, characterized in that: the main shell has a transverse portion, two longitudinal portions extending downward are respectively connected to two opposite ends of the transverse portion, and the transverse portion and each longitudinal portion are hollow and communicate with each other; two groups of the massage driving assemblies are respectively installed at two ends of the main shell, and the transmission mechanisms of each group of the massage driving assemblies pass through the proximal longitudinal portion to be connected with the corresponding massage head. 4.The double-head fascia gun of claim 3, characterized in that: each driving motor has a mounting bracket, and the mounting bracket has a through hole; the main shell comprises a first half shell and a second half shell, the first half shell and the second half shell are fixedly connected, the first half shell is provided with a sleeve insertion column, the second half shell is provided with a sleeve insertion hole, the sleeve insertion column passes through the through hole and is inserted into the sleeve insertion hole to fix the mounting bracket. 5.The double-head fascia gun of claim 3, characterized in that: the fascia gun comprises a control assembly, the control assembly is installed on the middle section of the transverse portion and is signal connected with two groups of the massage driving assemblies; the control assembly is configured with one or more of the following functional units: an independent start-stop unit for independently controlling one group of the massage driving assemblies; a linkage start-stop unit for synchronously controlling two groups of the massage driving assemblies; an independent power adjustment unit for independently controlling the power of one group of the massage driving assemblies; a linkage power adjustment unit for synchronously controlling the power of two groups of the massage driving assemblies. 6.The double-head fascia gun of claim 5, characterized in that: the fascia gun further comprises two groups of transversely distributed power supply assemblies, and the two groups of power supply assemblies are installed on the middle section of the transverse portion; each group of the power supply assemblies is electrically connected with one group of the massage driving assemblies, each group of the power supply assemblies uses a battery, and the side end surface of the transverse portion is provided with a charging port for the two groups of power supply assemblies. 7.The double-head fascia gun of claim 6, characterized in that: at least one massage head is provided with a heating element, and the heating element is electrically connected with the corresponding power supply assembly. 8.The double-head fascia gun of claim 3, characterized in that: the transmission mechanism comprises an eccentric wheel, a swing rod, and a piston. The eccentric wheel is connected with the output shaft of the driving motor, an eccentric shaft is arranged on the eccentric wheel, the eccentric shaft is offset from the output shaft, one end of the swing rod is rotatably installed on the eccentric shaft, and the end of the swing rod away from the eccentric shaft is rotatably connected with the piston, and the massage head is installed on the end of the piston away from the swing rod. The rotating action output by the output shaft of the driving motor is converted through the transmission mechanism, so that the massage head is driven by the piston to move linearly and reciprocally.

9. The double-head fascia gun of claim 8, wherein: A guide cylinder is fixedly arranged in each of the longitudinal portions, the piston is telescopically arranged in the guide cylinder, and the outer wall of the piston is attached to the inner wall of the guide cylinder.

10. The double-head fascia gun of claim 1, wherein: The fascia gun is provided with a plurality of massage heads with different functions; The transmission mechanism is connected with the massage head in a detachable structure, so that different massage heads can be installed and switched.

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