Transmission structure of fascia gun motor

Abstract

The utility model relates to a transmission structure of a fascia gun motor, which belongs to the field of fascia gun accessories and comprises a driving motor, a transmission rod and a piston head, the driving motor and the transmission rod are arranged in a fascia gun casing, the piston head is arranged on the transmission rod, a cam used for driving the transmission rod to translate is arranged on an output shaft of the driving motor, and a limit component is sleeved on the outer side of the transmission rod. The limiting assembly is fixedly connected to the fascia gun shell and comprises a front positioning sleeve arranged on the outer side of the piston head in a sleeving mode, a rear positioning sleeve arranged on the outer side of the transmission rod in a sleeving mode and a guiding piece penetrating through the transmission rod, and the front positioning sleeve and the rear positioning sleeve are of a conical annular structure. According to the transmission structure of the fascia gun motor provided by the utility model, through the cooperation of the limiting assembly, the transmission rod and the piston head, the protection that the rear end buffer is matched with the front end thrust is provided for the transmission structure, and the influence of the counter-acting force generated when the fascia gun is used for massaging muscles on the transmission structure is effectively reduced; and the stability and durability of the transmission structure are improved.

Description

Technical Field

[0001] This utility model belongs to the field of fascia gun accessories, specifically relating to the transmission structure of a fascia gun motor. Background Technology

[0002] A fascia gun is a device that massages muscles by repeatedly thrusting its nozzle. Its core components are the motor and its transmission structure, which serve as the driving source. In existing fascia guns, the transmission structure that works with the motor mainly consists of an eccentric wheel, a connecting rod, and a piston. During transmission, the motor first drives the eccentric wheel to rotate, which in turn drives the piston to move through the connecting rod.

[0003] When using a fascia gun to massage muscles, the entire assembly formed by the gun head and the transmission structure is also subject to a reaction force. This causes the connecting rod and eccentric wheel to bear periodic impact loads. Within the transmission mechanism composed of the eccentric wheel and the connecting rod, the position of the connection point between the connecting rod and the eccentric wheel is constantly changing. The driven connecting rod oscillates along a fixed path. Therefore, the force angle and magnitude of the force on the connecting rod and the eccentric wheel are unstable, making the transmission structure more prone to wear during operation. The massage reaction force has a greater impact on the transmission stability and may even cause the transmission structure to jam. To address this, this utility model proposes a transmission structure for a fascia gun motor. Utility Model Content

[0004] The purpose of this invention is to provide a transmission structure for a fascia gun motor in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] This utility model provides a transmission structure for a fascia gun motor. The transmission structure of the fascia gun motor includes a drive motor and a transmission rod disposed inside the fascia gun housing, and a piston head disposed on the transmission rod. It also includes a cam and a limiting component that cooperates with the transmission rod. The cam is mounted on the output shaft of the drive motor, and the limiting component is fixedly connected to the fascia gun housing.

[0007] The limiting assembly includes a front positioning sleeve fitted on the outside of the piston head, a rear positioning sleeve fitted on the outside of the transmission rod, and a guide member that passes through the transmission rod. The front positioning sleeve and the rear positioning sleeve have a conical annular structure, and the piston head has a frustum-shaped structure that matches the front positioning sleeve. The guide member is fixed to the inside of the rear positioning sleeve and is elastically slidably connected to the transmission rod by a spring.

[0008] As a further optimization of this utility model, the rear end of the transmission rod is provided with a rotating roller that fits against the cam.

[0009] As a further optimization of this utility model, the inner diameter of the front positioning sleeve is larger than the outer diameter of the rear positioning sleeve, and the inner diameters of both the front and rear positioning sleeves are larger than the outer diameter of the transmission rod.

[0010] As a further optimization of this utility model, the front positioning sleeve and the rear positioning sleeve are coaxially distributed and connected by a connecting rod.

[0011] As a further optimization of this utility model, the guide includes a bracket, and the outer side of the bracket is provided with a number of rollers arranged in a circular array.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. The transmission structure provided by this utility model, through the cooperation of transmission rod, cam, rear positioning sleeve, guide and spring, can use the rotation of cam to drive transmission rod to move back and forth in a straight line, and the piston head that moves synchronously with transmission rod can drive the fascia gun head installed at its front end to reciprocate and extend, thereby achieving the effect of massaging muscles.

[0014] 2. Through the cooperation of the transmission rod, guide component, and spring, not only can the problem of the transmission rod shifting under the influence of massage reaction force be avoided, but the spring can also play a buffering role, preventing the reaction force from impacting the cam. Through the cooperation of the piston head and the front positioning sleeve, the effect of the thrust piston head and the transmission rod being connected as a whole is achieved, which can prevent the problem of the transmission rod excessively squeezing the cam due to massage reaction force. The rear buffer and the front thrust function together reduce the impact of massage reaction force on the transmission structure, which is conducive to improving the stability and durability of the transmission structure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the transmission structure when the piston head is out of contact with the piston.

[0016] Figure 2 This is a schematic diagram of the transmission structure in the piston head retracted state;

[0017] Figure 3 It is a schematic diagram showing the assembly of the piston head, transmission rod, guide components, and rotating rollers;

[0018] Figure 4 This is a cross-sectional view of the guide component and the transmission rod in operation.

[0019] In the diagram: 1. Drive motor; 2. Cam; 3. Transmission rod; 4. Rotary roller; 5. Piston head; 6. Front positioning sleeve; 7. Rear positioning sleeve; 8. Guide component; 801. Bracket; 802. Roller; 9. Spring; 10. Mounting bracket. Detailed Implementation

[0020] The present application will now be described in further detail. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0021] Example 1

[0022] like Figure 1-4 As shown, the transmission structure of the fascia gun motor in this embodiment includes a drive motor 1 and a transmission rod 3 disposed in the fascia gun housing, and a piston head 5 disposed on the transmission rod 3. The fascia gun and its mounting base are both installed at the front end of the piston head 5. It also includes a cam 2 and a limiting component that cooperates with the transmission rod 3. The cam 2 is mounted on the output shaft of the drive motor 1, and the limiting component is fixed to the fascia gun housing.

[0023] The limiting assembly includes a front positioning sleeve 6 sleeved on the outside of the piston head 5, a rear positioning sleeve 7 sleeved on the outside of the transmission rod 3, and a guide member 8 penetrating the transmission rod 3. The front positioning sleeve 6 and the rear positioning sleeve 7 have a conical annular structure, and the piston head 5 has a frustum-shaped structure that cooperates with the front positioning sleeve 6. The guide member 8 is fixed to the inner side of the rear positioning sleeve 7 and is elastically slidably connected to the transmission rod 3 through springs 9. There are two springs 9, which are arranged on both sides of the guide member 8.

[0024] Under the action of spring 9, the rear end of transmission rod 3 always fits against the outer wall of cam 2. When the transmission structure is running, the drive motor 1 drives cam 2 to rotate, which in turn drives the transmission rod 3 and piston head 5 to reciprocate and translate. When the convex top of cam 2 is aligned with transmission rod 3, the fascia gun head installed at the front end of piston head 5 is pushed out to the maximum distance. When the convex bottom of cam 2 is aligned with transmission rod 3, the fascia gun head retracts to the initial position, thereby driving the fascia gun head to reciprocate and extend to massage muscles.

[0025] During the reciprocating translation of the transmission rod 3, the guide 8 always slides within the transmission rod 3, thus restricting the transmission rod 3 from moving in a straight line. During the return stroke of the transmission mechanism, the spring 9 causes the transmission rod 3 to translate, thereby causing the piston head 5 to gradually approach the front positioning sleeve 6. When the piston head 5 and the front positioning sleeve 6 are fully engaged, the cam 2 aligns with the transmission rod 3. During this process, the spring 9 acts as a buffer, and the front positioning sleeve 6 acts as a thrust stop, effectively preventing the reaction force generated during muscle massage from acting on the cam 2 through the transmission rod 3, which could lead to damage to the overall stability and durability of the transmission structure.

[0026] Preferably, the rear end of the transmission rod 3 is provided with a rotating roller 4 that fits against the cam 2. Compared with the end of the transmission rod 3 directly contacting the cam 2, when the rotating roller 4 moves in contact with the outer contour of the cam 2, the sliding friction can be converted into rolling friction, resulting in less resistance and smoother transmission.

[0027] Preferably, the inner diameter of the front positioning sleeve 6 is larger than the outer diameter of the rear positioning sleeve 7, and the inner diameters of both the front positioning sleeve 6 and the rear positioning sleeve 7 are larger than the outer diameter of the transmission rod 3.

[0028] The front positioning sleeve 6 and the rear positioning sleeve 7 are coaxially distributed and connected by a connecting rod.

[0029] By connecting and dimensionally matching the front positioning sleeve 6 and the rear positioning sleeve 7, the installation convenience of the transmission structure can be effectively improved. When injection molding the fascia gun housing, two mounting brackets 10 corresponding to the front positioning sleeve 6 and the rear positioning sleeve 7 are pre-set. When installing the transmission structure, first apply adhesive to the outside of the front positioning sleeve 6 and the rear positioning sleeve 7, and then push the entire transmission structure horizontally into the fascia gun housing so that the front positioning sleeve 6 and the rear positioning sleeve 7 are bonded and fixed to the corresponding mounting brackets 10. Then, fix the entire assembly consisting of the drive motor 1 and the cam 2 connected to the fascia gun housing from the other side to complete the installation of the transmission structure.

[0030] Preferably, the guide member 8 includes a bracket 801, and a plurality of rollers 802 arranged in a circular array are provided on the outer side of the bracket 801. The rollers 802 are embedded in the grooves on the transmission rod 3, which can achieve a stable guiding effect. The transmission rod 3 experiences little moving resistance, so that the transmission rod 3 can take into account both transmission stability and smoothness.

[0031] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A transmission structure for a fascia gun motor, comprising a drive motor (1) and a transmission rod (3) disposed within the fascia gun housing, and a piston head (5) disposed on the transmission rod (3), characterized in that, It also includes a cam (2) and a limiting component that cooperates with the transmission rod (3), the cam (2) being mounted on the output shaft of the drive motor (1), and the limiting component being fixed to the fascia gun housing; The limiting assembly includes a front positioning sleeve (6) sleeved on the outside of the piston head (5), a rear positioning sleeve (7) sleeved on the outside of the transmission rod (3), and a guide (8) penetrating the transmission rod (3). The front positioning sleeve (6) and the rear positioning sleeve (7) have a conical ring structure, and the piston head (5) has a frustum-shaped structure that cooperates with the front positioning sleeve (6). The guide (8) is fixed to the inside of the rear positioning sleeve (7) and is elastically slidably connected to the transmission rod (3) through a spring (9).

2. The transmission structure of the fascia gun motor according to claim 1, characterized in that, The rear end of the transmission rod (3) is provided with a rotating roller (4) that fits against the cam (2).

3. The transmission structure of the fascia gun motor according to claim 1, characterized in that, The inner diameter of the front positioning sleeve (6) is larger than the outer diameter of the rear positioning sleeve (7), and the inner diameters of both the front positioning sleeve (6) and the rear positioning sleeve (7) are larger than the outer diameter of the transmission rod (3).

4. The transmission structure of the fascia gun motor according to claim 1, wherein, The front positioning sleeve (6) and the rear positioning sleeve (7) are coaxially distributed and connected by a connecting rod.

5. The transmission structure of the fascia gun motor according to claim 1, characterized in that, The guide (8) includes a bracket (801), and the outer side of the bracket (801) is provided with a plurality of rollers (802) arranged in a circular array.

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