Fascia gun

Abstract

The fascia gun comprises a connecting rod, a piston rod and a crank structure, the piston rod and the crank structure are hinged to the two ends of the connecting rod, the crank structure comprises an eccentric wheel, an adjusting wheel and an adjusting assembly, the eccentric wheel is connected with a rotating motor of the fascia gun, and the adjusting wheel is arranged on the eccentric wheel and can rotate along with the eccentric wheel; the end, away from the piston rod, of the connecting rod is connected with the adjusting wheel, and an eccentric distance exists between the hinged rotating center of the connecting rod and the center of the rotating shaft of the adjusting wheel. The eccentric distance of the crank structure and the stroke of the piston rod in the first direction are further adjusted, and the stroke of a massage head on the fascia gun is further adjusted. The stroke adjusting structure of the fascia gun is simple, much space in the fascia gun does not need to be occupied, and the size and cost of the fascia gun can be reduced.

Description

Technical Field

[0001] This application relates to the field of fascia gun technology, specifically to a fascia gun. Background Technology

[0002] A fascia gun, also known as a deep myofascial release device, is a soft tissue massage tool that relaxes the body's soft tissues through high-frequency impacts. Existing fascia guns use a piston to drive the massage head in a linear reciprocating motion. The massage head contacts the body, generating high-frequency vibrations that penetrate deep into the muscles, reducing local tissue tension, relieving pain, and promoting blood circulation.

[0003] In related technologies, the stroke adjustment structure of fascia guns is relatively complex and requires a lot of space inside the fascia gun housing, resulting in higher costs and larger size of fascia guns. Utility Model Content

[0004] The purpose of this application is to provide a fascia gun to solve the technical problems in the related art, where the stroke adjustment structure of the fascia gun is relatively complex and requires a lot of space inside the fascia gun housing, resulting in high cost and large size of the fascia gun.

[0005] In a first aspect, this application provides a fascia gun, the fascia gun comprising:

[0006] A connecting rod and a piston rod, one end of the connecting rod being rotatably connected to the piston rod, the piston rod reciprocating along a first direction;

[0007] Crank structure, including:

[0008] Eccentric wheel;

[0009] An adjusting wheel is provided on the eccentric wheel and can rotate with the eccentric wheel. The center of the rotating shaft of the adjusting wheel and the center of the rotating shaft of the eccentric wheel are spaced apart. The end of the connecting rod away from the piston rod is connected to the adjusting wheel, and there is an eccentric distance between the hinge rotation center of the connecting rod and the adjusting wheel and the center of the rotating shaft of the adjusting wheel.

[0010] An adjustment assembly is connected to the adjustment wheel. The adjustment assembly is used to drive the adjustment wheel to rotate relative to the eccentric wheel, and to drive the end of the connecting rod away from the piston rod to rotate relative to the eccentric wheel, so as to adjust the distance between the end of the connecting rod away from the piston rod and the center of the rotation axis of the eccentric wheel, thereby adjusting the stroke of the piston rod along the first direction.

[0011] The eccentric wheel has a receiving groove on the side facing the connecting rod, and the adjusting wheel is located in the receiving groove of the eccentric wheel.

[0012] The crank structure further includes a first bearing, which is disposed within the receiving groove and surrounds the adjusting wheel so that the adjusting wheel can rotate relative to the eccentric wheel.

[0013] The adjusting assembly includes an adjusting rod, which includes a connecting part that passes through and rotatably connects to the connecting rod. The connecting part is connected to the adjusting wheel and is offset from the center of the adjusting wheel's axis of rotation. The connecting part is used to drive the connecting rod to rotate with the adjusting wheel.

[0014] The adjusting rod further includes a main body connected to the connecting part. The connecting part is offset from the rotation axis center of the main body, and the rotation axis center of the main body and the rotation axis center of the adjusting wheel are located on the same straight line.

[0015] The adjusting assembly further includes an adjusting screw and an adjusting nut. The adjusting screw is fixedly connected to the adjusting rod and is used to drive the adjusting rod to rotate. The adjusting nut is sleeved on the adjusting screw and is used to move along a second direction and its opposite direction so that the adjusting screw rotates relative to the adjusting nut. The second direction is perpendicular to the first direction.

[0016] The center of rotation of the adjusting screw, the center of rotation of the main body of the adjusting rod, and the center of rotation of the adjusting wheel are all located on the same straight line.

[0017] The fascia gun also includes a second bearing, which surrounds the adjusting nut. The center of rotation of the adjusting nut and the center of rotation of the eccentric wheel are on the same straight line, and the adjusting nut can rotate around the center of rotation of the eccentric wheel.

[0018] The lead range of the adjusting screw is 15mm-20mm.

[0019] Wherein, the distance between the center of the rotating shaft of the adjusting wheel and the center of the rotating shaft of the eccentric wheel is E1, the distance between the center of the rotating shaft of the adjusting wheel and the connecting part is E2, and the distance between the connecting part and the center of the rotating shaft of the eccentric wheel is α, wherein α satisfies: E1-E2≤α≤E1+E2.

[0020] Wherein, in the first direction, the line connecting the center of the adjusting wheel's shaft and the connecting part forms an angle θ with the first direction away from the eccentric wheel, and the angle α satisfies:

[0021] .

[0022] The fascia gun also includes a drive structure connected to the adjusting nut, which drives the adjusting nut to move along the second direction and in the opposite direction.

[0023] The drive structure includes a linear drive motor, which is a cylinder. The linear drive motor is connected to the second bearing on the outer periphery of the adjusting nut and is used to drive the second bearing and the adjusting nut to move along the second direction and in the opposite direction.

[0024] The fascia gun also includes a housing. The drive structure includes a fixed nut, a movable screw, and a knob. The fixed nut is fixed to the housing. The movable screw is located inside the fixed nut, and its outer peripheral sidewall is threadedly connected to the inner peripheral sidewall of the fixed nut. The inner peripheral sidewall of the movable screw is connected to the adjusting nut and is used to drive the adjusting nut to move along the second direction and its opposite direction. The movable screw is slidably connected to the knob. When the knob rotates, it drives the movable screw to rotate relative to the fixed nut. The movable screw moves relative to the knob along the second direction or the opposite direction of the second direction, thereby driving the adjusting nut to move along the second direction or the opposite direction of the second direction.

[0025] The lead range of the fixed nut and the movable screw is 2mm-8mm.

[0026] The inner circumferential sidewall of the movable screw is provided with a bearing step for placing the second bearing on the outer circumference of the adjusting nut.

[0027] The fascia gun also includes multiple buffer components, at least one of which is located between the fixing nut and the outer shell.

[0028] In the fascia gun provided in this application, one end of the connecting rod is hinged to a piston rod, and the other end is hinged to a crank structure. The crank structure includes an eccentric wheel, an adjusting wheel, and an adjusting assembly. The eccentric wheel is connected to the rotating motor of the fascia gun. The adjusting wheel is located on the eccentric wheel and can rotate with the eccentric wheel. The center of the rotating shaft of the adjusting wheel and the center of the rotating shaft of the eccentric wheel are spaced apart. The end of the connecting rod away from the piston rod is connected to the adjusting wheel. There is an eccentricity between the hinge rotation center of the connecting rod and the adjusting wheel and the center of the rotating shaft of the adjusting wheel. The adjusting assembly is used to drive the adjusting wheel to rotate relative to the eccentric wheel, so as to adjust the distance between the connection position of the end of the connecting rod away from the piston rod and the adjusting wheel and the center of the rotating shaft of the eccentric wheel, thereby adjusting the eccentricity of the crank structure and the stroke of the piston rod in the first direction, thereby changing the stroke of the massage head on the fascia gun, so as to realize the adjustment of the stroke of the massage head on the fascia gun. The fascia gun of this application has an adjusting wheel that can rotate relative to the eccentric wheel. The adjusting wheel is connected to the end of the connecting rod away from the piston rod. The adjusting component drives the adjusting wheel to rotate, thereby adjusting the stroke of the piston rod and thus the stroke of the massage head on the fascia gun. The fascia gun of this application can steplessly adjust the stroke, which is beneficial to enriching the application scenarios of the fascia gun and improving its functionality. In addition, the stroke adjustment structure of the fascia gun of this application is relatively simple and does not require much space inside the fascia gun, which helps to reduce the size and cost of the fascia gun. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of a fascia gun provided in an embodiment of this application;

[0031] Figure 2 This is a schematic diagram of the cross-sectional structure of a fascia gun provided in an embodiment of this application;

[0032] Figure 3 This is a cross-sectional structural diagram of a connecting rod, piston rod, and crank structure provided in an embodiment of this application;

[0033] Figure 4 This is a partial cross-sectional structural diagram of an eccentric wheel and an adjusting wheel provided in an embodiment of this application;

[0034] Figure 5 This is a partial cross-sectional structural diagram of a crank structure provided in an embodiment of this application;

[0035] Figure 6This is a top view of a connecting part, adjusting wheel, and eccentric wheel provided in an embodiment of this application. Figure 1 ;

[0036] Figure 7 This is a top view of a connecting part, adjusting wheel, and eccentric wheel provided in an embodiment of this application. Figure 2 ;

[0037] Figure 8 This is a top view of a connecting part, adjusting wheel, and eccentric wheel provided in an embodiment of this application. Figure 3 ;

[0038] Figure 9 This is a schematic diagram showing the connection between the connecting part, the center of the rotating shaft of the adjusting wheel, and the center of the rotating shaft of the eccentric wheel, according to an embodiment of this application.

[0039] Figure 10 This application provides a schematic diagram of a fascia gun including a drive structure;

[0040] Figure 11 An exploded view of a fascia gun including a drive structure is provided in the embodiments of this application.

[0041] Label Explanation:

[0042] Fascia gun 100, connecting rod 11, first end 111, second end 112, piston rod 12, crank structure 20, eccentric wheel 21, first sub-wheel 211, second sub-wheel 212, receiving groove 213, adjusting wheel 22, adjusting assembly 23, adjusting rod 231, connecting part 2311, main body part 2312, adjusting screw 232, adjusting nut 233, first bearing 31, second bearing 32, drive structure 40, fixing nut 41, movable screw 42, insertion hole 421, knob 43, insertion part 431, outer shell 50, buffer 60, limit bearing 70, mounting part 80, massage head 91, rotating motor 92. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0044] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0045] In this specification, for convenience, terms such as "middle," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are used to indicate orientation or positional relationships in conjunction with the accompanying drawings. This is solely for the purpose of facilitating the description and simplification, and does not imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this disclosure. The positional relationships of the constituent elements may be appropriately varied depending on the orientation of the constituent elements being described. Therefore, the use of terms not limited to those described in the specification may be appropriately replaced as needed.

[0046] In this specification, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they may refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection via an intermediate component, or a connection within two components. Those skilled in the art will understand the meaning of these terms in this disclosure as appropriate.

[0047] A fascia gun, also known as a deep myofascial release device, is a soft tissue massage tool that relaxes the body's soft tissues through high-frequency impacts. Existing fascia guns use a piston to drive the massage head in a linear reciprocating motion. The massage head contacts the body, generating high-frequency vibrations that penetrate deep into the muscles, reducing local tissue tension, relieving pain, and promoting blood circulation.

[0048] In related technologies, the stroke adjustment structure of fascia guns is relatively complex and requires a lot of space inside the fascia gun housing, resulting in higher costs and larger size of fascia guns.

[0049] Please refer to Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of a fascia gun provided in an embodiment of this application. Figure 2 This is a schematic diagram of the cross-sectional structure of a fascia gun provided in an embodiment of this application. Figure 3 This is a cross-sectional structural diagram of a connecting rod, piston rod, and crank structure provided in an embodiment of this application.

[0050] This application provides a fascia gun 100 to solve the technical problems in the related art, where the stroke adjustment structure of the fascia gun is relatively complex and requires a lot of space in the fascia gun housing, resulting in high cost and large size of the fascia gun.

[0051] The fascia gun 100 includes a connecting rod 11, a piston rod 12, and a crank structure 20. One end of the connecting rod 11 is rotatably connected to the piston rod 12, and the piston rod 12 reciprocates along a first direction. The crank structure 20 includes an eccentric wheel 21, an adjusting wheel 22, and an adjusting assembly 23. The adjusting wheel 22 is mounted on the eccentric wheel 21 and can rotate with the eccentric wheel 21. The center of rotation of the adjusting wheel 22 and the center of rotation of the eccentric wheel 21 are spaced apart. The end of the connecting rod 11 away from the piston rod 12 is connected to the adjusting wheel 22, and there is an eccentricity between the hinge rotation center of the connecting rod 11 and the adjusting wheel 22 and the center of rotation of the adjusting wheel 22. The adjusting component 23 is connected to the adjusting wheel 22. The adjusting component 23 is used to drive the adjusting wheel 22 to rotate relative to the eccentric wheel 21, and drive the end of the connecting rod 11 away from the piston rod 12 to rotate relative to the eccentric wheel 21, so as to adjust the distance between the end of the connecting rod 11 away from the piston rod 12 and the center of the rotation axis of the eccentric wheel 21, thereby adjusting the stroke of the piston rod 12 along the first direction.

[0052] The fascia gun 100 provided in this application includes the connecting rod 11, the piston rod 12, and the crank structure 20. In this embodiment, the fascia gun 100 also includes a housing 50 and a rotary motor 92. The connecting rod 11, piston rod 12, crank structure 20, and rotary motor 92 are all disposed within the housing 50. The housing 50 can restrict the reciprocating motion of the piston rod 12. It should be noted that this application does not limit the specific structure within the housing 50 that restricts the reciprocating motion of the piston rod 12, which will be described in detail later and should not be construed as a limitation of this application. Furthermore, the end of the piston rod 12 away from the connecting rod 11 is connected to the massage head 91 of the fascia gun 100, so as to drive the massage head 91 to reciprocate along the first direction, so that the fascia gun 100 can realize the massage function.

[0053] Furthermore, the output shaft of the rotary motor 92 is connected to the crank structure 20, and the rotary motor 92 is used to drive the crank structure 20 to rotate.

[0054] Further, one end of the connecting rod 11 is rotatably connected to the piston rod 12, and the other end is rotatably connected to the crank structure 20. Specifically, in this embodiment, the connecting rod 11 includes a first end 111 and a second end 112 disposed opposite to each other. The first end 111 is connected to the crank structure 20, and the second end 112 is rotatably connected to the piston rod 12. The first end 111 of the connecting rod 11 is connected to the crank structure 20 and is used to follow the rotational motion of the crank structure 20. The second end 112 of the connecting rod 11 is connected to the piston rod 12 and is used to drive the piston rod 12 to reciprocate. In other words, in this embodiment, the connecting rod 11 is used to convert the rotational motion of the crank structure 20 into the reciprocating motion of the piston rod 12.

[0055] Furthermore, the crank structure 20 includes the eccentric wheel 21, the adjusting wheel 22, and the adjusting assembly 23. The eccentric wheel 21 is connected to the rotary motor 92, and the rotary motor 92 drives the eccentric wheel 21 to rotate. The output shaft of the rotary motor 92 and the rotation axis of the eccentric wheel 21 are coaxially aligned; in other words, the output shaft of the rotary motor 92 and the rotation axis of the eccentric wheel 21 are located on the same straight line to ensure that the rotation center of the output shaft of the rotary motor 92 and the rotation center of the eccentric wheel 21 completely coincide.

[0056] The adjusting wheel 22 is mounted on the eccentric wheel 21 and can rotate with the eccentric wheel 21. In other words, the eccentric wheel 21 can drive the adjusting wheel 22 to rotate around the axis of rotation of the eccentric wheel 21. Furthermore, in this embodiment, the adjusting wheel 22 can also rotate relative to the eccentric wheel 21. It should be noted that in this embodiment, the axis of rotation of the adjusting wheel 22 and the axis of rotation of the eccentric wheel 21 are spaced apart; the axis of rotation of the adjusting wheel 22 and the axis of rotation of the eccentric wheel 21 are also spaced apart. In other words, when the adjusting wheel 22 rotates relative to the eccentric wheel 21, its own axis of rotation does not coincide with the axis of rotation of the eccentric wheel 21. That is, when the adjusting wheel 22 rotates relative to the eccentric wheel 21, the distance between the other parts of the adjusting wheel 22 (excluding the axis of rotation centerline) and the axis of rotation center of the eccentric wheel 21 will change.

[0057] Furthermore, the end of the connecting rod 11 away from the piston rod 12 is connected to the adjusting wheel 22, and there is an eccentricity between the hinge rotation center of the connecting rod 11 and the adjusting wheel 22 and the rotation axis center of the adjusting wheel 22. In other words, the first end 111 of the connecting rod 11 is connected to the adjusting wheel 22, and the hinge rotation center of the first end 111 and the adjusting wheel 22 is offset from the rotation axis center of the adjusting wheel 22. As described above, when the adjusting wheel 22 rotates relative to the eccentric wheel 21, the distance between the other parts of the adjusting wheel 22 (excluding the center line of the rotating shaft) and the center of the rotating shaft of the eccentric wheel 21 will change. The first end 111 of the connecting rod 11 is connected to the adjusting wheel 22, and there is an eccentricity between the hinge rotation center of the first end 111 and the adjusting wheel 22 and the center of the rotating shaft of the adjusting wheel 22. If the adjusting wheel 22 rotates relative to the eccentric wheel 21, the distance between the connection point of the first end 111 and the adjusting wheel 22 and the center of the rotating shaft of the eccentric wheel 21 will change. For ease of description, the axis of the connection point of the first end 111 and the adjusting wheel 22 is named the connecting rod hinge axis, which should not be construed as a limitation of this application.

[0058] It should be noted that, in this embodiment, the first end 111 of the connecting rod 11 is connected to the adjusting wheel 22, and the eccentric wheel 21 can be used to drive the adjusting wheel 22 to rotate around the center of the eccentric wheel 21's axis. Similarly, the eccentric wheel 21 will synchronously drive the first end 111 of the connecting rod 11 to rotate around the center of the eccentric wheel 21's axis. When the eccentric wheel 21 drives the adjusting wheel 22 and the first end 111 of the connecting rod 11 to rotate around the center of the eccentric wheel 21's axis, the distance between the center of the eccentric wheel 21's axis and the first end 111 is the eccentricity of the crank structure 20. In other words, the distance between the center of the eccentric wheel 21's axis and the connecting rod hinge axis is the eccentricity of the crank structure 20.

[0059] It should be further explained that when the adjusting wheel 22 rotates relative to the eccentric wheel 21, the distance between the connection point of the first end 111 and the adjusting wheel 22 and the center of the rotation axis of the eccentric wheel 21 changes. That is, the distance between the connecting rod hinge axis and the center of the rotation axis of the eccentric wheel 21 changes, and the eccentricity of the crank structure 20 changes. The first end 111 of the connecting rod 11 is connected to the crank structure 20. The change in the eccentricity of the crank structure 20 will cause the rotation radius of the first end 111 driven by the crank structure 20 to change, thereby changing the stroke of the reciprocating sliding of the second end 112 of the connecting rod 11, and further changing the stroke of the massage head 91 on the fascia gun 100, so as to adjust the stroke of the massage head 91 on the fascia gun 100. In the fascia gun 100 provided in this application, the stroke of the massage head 91 is adjustable, allowing users to select the appropriate stroke for massage therapy according to their own situation. For example, users can choose a deeper massage with a larger stroke or a shallower massage with a smaller stroke, which helps the fascia gun 100 meet more user scenarios and thus improves the functionality and practicality of the fascia gun 100.

[0060] Specifically, the stroke of the second end 112 of the connecting rod 11 reciprocating changes, that is, the amplitude of the reciprocating sliding of the second end 112 of the connecting rod 11 changes, and the travel distance of the reciprocating sliding of the second end 112 of the connecting rod 11 changes; similarly, the stroke of the massage head 91 on the fascia gun 100 is adjusted, that is, the amplitude of the reciprocating movement of the massage head 91 on the fascia gun 100 changes, and the travel distance of the reciprocating movement of the massage head 91 on the fascia gun 100 changes.

[0061] When the adjusting wheel 22 rotates relative to the eccentric wheel 21, the distance between the connection point of the first end 111 and the adjusting wheel 22 and the center of the eccentric wheel 21's axis of rotation will change. For example, the distance between the connection point of the first end 111 and the adjusting wheel 22 and the center of the eccentric wheel 21's axis of rotation will increase or decrease. Specifically, when the adjusting wheel 22 rotates relative to the eccentric wheel 21, if the distance between the connection point of the first end 111 and the adjusting wheel 22 and the center of the eccentric wheel 21's axis of rotation increases, that is, the distance between the connecting rod hinge shaft and the center of the eccentric wheel 21's axis of rotation will increase, that is, the eccentricity of the crank structure 20 will increase, which will cause the crank structure 20 to drive the first end 111 to rotate to a larger radius, thereby increasing the stroke of the second end 112 of the connecting rod 11 reciprocating, and consequently increasing the stroke of the massage head 91 on the fascia gun 100. Similarly, when the adjusting wheel 22 rotates relative to the eccentric wheel 21, if the distance between the connection point of the first end 111 and the adjusting wheel 22 and the center of the rotation axis of the eccentric wheel 21 becomes smaller, that is, the distance between the connecting rod hinge axis and the center of the rotation axis of the eccentric wheel 21 will become smaller, that is, the eccentricity of the crank structure 20 will become smaller, which will cause the crank structure 20 to drive the first end 111 to rotate to a smaller radius, thereby making the stroke of the second end 112 of the connecting rod 11 reciprocating to a smaller stroke, and thus making the stroke of the massage head 91 on the fascia gun 100 smaller.

[0062] Furthermore, when the adjusting wheel 22 rotates at a certain angle relative to the eccentric wheel 21, the distance between the connection point of the first end 111 and the adjusting wheel 22 and the center of the eccentric wheel 21 will change continuously. That is, the distance between the connection point of the first end 111 and the adjusting wheel 22 and the center of the eccentric wheel 21 will increase or decrease continuously. In other words, the eccentricity of the crank structure 20 will increase or decrease continuously, thereby causing the stroke of the second end 112 of the connecting rod 11 to reciprocate to increase or decrease continuously, which can realize the stepless adjustment of the stroke of the massage head 91 on the fascia gun 100.

[0063] The fascia gun 100 also includes the adjustment component 23, which is connected to the adjustment wheel 22. The adjustment component 23 is used to drive the adjustment wheel 22 to rotate relative to the eccentric wheel 21. The first end 111 of the connecting rod 11 is connected to the adjustment wheel 22. While the adjustment component 23 drives the adjustment wheel 22 to rotate relative to the eccentric wheel 21, the first end 111 of the connecting rod 11 also rotates relative to the eccentric wheel 21, thereby adjusting the distance between the connection point of the first end 111 and the adjustment wheel 22 and the center of the rotation axis of the eccentric wheel 21, that is, adjusting the eccentricity of the crank structure 20, and thus adjusting the reciprocating sliding stroke distance of the second end 112 of the connecting rod 11, that is, adjusting the stroke of the massage head 91 on the fascia gun 100.

[0064] Furthermore, in this embodiment, the adjusting component 23 is also synchronously connected to the first end 111 of the connecting rod 11, that is, the adjusting component 23 can connect the connecting rod 11 to obtain the first end 111 and the adjusting wheel 22 respectively. It should be noted that in this embodiment, the first end 111 of the connecting rod 11 is connected to the adjusting wheel 22 through the adjusting component 23. Optionally, in other embodiments, the first end 111 of the connecting rod 11 can also be connected to the adjusting wheel 22 through other structural components other than the adjusting component 23, which should not be construed as a limitation of this application.

[0065] Furthermore, in this embodiment, the adjusting component 23 is also synchronously connected to the first end 111 of the connecting rod 11. That is, in this embodiment, the adjusting component 23 needs to rotate around the axis of the eccentric wheel 21 following the first end 111. In other words, the adjusting component 23 in this embodiment can rotate relative to the outer casing 50. It should be noted that in other embodiments, if the first end 111 of the connecting rod 11 is also connected to the adjusting wheel 22 through other structural components besides the adjusting component 23, the adjusting component 23 is only connected to the adjusting wheel 22. The adjusting component 23 does not need to be connected to the first end 111 of the connecting rod 11, and the adjusting component 23 may not need to rotate around the axis of the eccentric wheel 21 following the first end 111. This application uses the adjusting component 23 to illustrate the adjusting wheel 22 and the first end 111 of the connecting rod 11, respectively, and should not be construed as a limitation of this application.

[0066] Furthermore, it should be noted that the fascia gun 100 of this application can adjust the stroke of the massage head 91 in both a non-working and working state. For example, when the fascia gun 100 is in a non-working state, the rotating motor 92 and the eccentric wheel 21 stop rotating, and the adjusting component 23 can drive the adjusting wheel 22 to rotate relative to the eccentric wheel 21 to adjust the distance between the connection point of the first end 111 and the adjusting wheel 22 and the center of the rotation axis of the eccentric wheel 21, thereby adjusting the reciprocating sliding stroke distance of the second end 112 to achieve adjustment of the stroke of the massage head 91 in the fascia gun 100. When the fascia gun 100 is in operation, the rotating motor 92 drives the eccentric wheel 21, the adjusting wheel 22, the first end 111 of the connecting rod 11, and the adjusting component 23 to rotate. The adjusting component 23 can also drive the adjusting wheel 22 to rotate relative to the eccentric wheel 21, thereby adjusting the distance between the connection between the first end 111 and the adjusting wheel 22 and the center of the rotating shaft of the eccentric wheel 21, and thus adjusting the reciprocating sliding stroke distance of the second end 112, so as to adjust the stroke of the massage head 91 in the fascia gun 100.

[0067] In the fascia gun 100 provided in this application, one end of the connecting rod 11 is hinged to the piston rod 12, and the other end is hinged to the crank structure 20. The crank structure 20 includes the eccentric wheel 21, the adjusting wheel 22, and the adjusting assembly 23. The eccentric wheel 21 is connected to the rotating motor 92 of the fascia gun 100. The adjusting wheel 22 is disposed on the eccentric wheel 21 and can rotate with the eccentric wheel 21. The rotation axis center of the adjusting wheel 22 and the rotation axis center of the eccentric wheel 21 are spaced apart. The end of the connecting rod 11 away from the piston rod 12 is connected to the adjusting wheel 22. The connecting rod 11 and There is an eccentricity between the hinge rotation center of the adjusting wheel 22 and the rotation axis center of the adjusting wheel 22. The adjusting component 23 is used to drive the adjusting wheel 22 to rotate relative to the eccentric wheel 21, so as to adjust the distance between the connection position of the connecting rod 11 away from the piston rod 12 and the adjusting wheel 22 and the rotation axis center of the eccentric wheel 21, thereby adjusting the eccentricity of the crank structure 20 and the stroke of the piston rod 12 along the first direction, thereby changing the stroke of the massage head 91 on the fascia gun 100, so as to realize the adjustment of the stroke of the massage head 91 on the fascia gun 100. The fascia gun 100 of this application has an adjusting wheel 22 that can rotate relative to the eccentric wheel 21 on the eccentric wheel 21. The adjusting wheel 22 is connected to the end of the connecting rod 11 away from the piston rod 12. The adjusting component 23 drives the adjusting wheel 22 to rotate, thereby adjusting the stroke of the piston rod 12 and thus the stroke of the massage head 91 on the fascia gun 100. The fascia gun 100 in this application can steplessly adjust the stroke, which is beneficial to enriching the usage scenarios of the fascia gun 100 and improving the functionality of the fascia gun 100. In addition, the stroke adjustment structure of the fascia gun 100 in this application is relatively simple and does not require a lot of space inside the fascia gun 100, which is beneficial to reducing the size and cost of the fascia gun 100.

[0068] Please refer to Figures 2 to 4 , Figure 4 This is a partial cross-sectional structural diagram of an eccentric wheel and an adjusting wheel provided in an embodiment of this application. In one embodiment, the eccentric wheel 21 has a receiving groove 213 on the side facing the connecting rod 11, and the adjusting wheel 22 is disposed in the receiving groove 213 of the eccentric wheel 21.

[0069] The adjusting wheel 22 is disposed within the receiving groove 213 of the eccentric wheel 21. In other words, by embedding the adjusting wheel 22 within the eccentric wheel 21, the connection stability between the adjusting wheel 22 and the eccentric wheel 21 can be improved, preventing the adjusting wheel 22 from detaching from the eccentric wheel 21. On the other hand, by placing the adjusting wheel 22 within the eccentric wheel 21, the height dimension of the crank structure 20 can be reduced, thereby saving internal installation space of the fascia gun 100 and reducing the overall volume of the fascia gun 100.

[0070] In one embodiment, the crank structure 20 further includes a first bearing 31 disposed within the receiving groove 213, and the first bearing 31 surrounds the adjusting wheel 22 so that the adjusting wheel 22 can rotate relative to the eccentric wheel 21.

[0071] Further, in this embodiment, the eccentric wheel 21 includes a first sub-wheel 211 and a second sub-wheel 212 connected together. The first sub-wheel 211 and the second sub-wheel 212 are stacked along a second direction, wherein the second direction is... Figure 4 The height direction is defined in the middle, and the second direction is perpendicular to the first direction.

[0072] The first sub-wheel 211 is connected to the rotating motor 92, and the second sub-wheel 212 has a receiving through hole. The inner wall of the receiving through hole in the second sub-wheel 212 and the surface of the first sub-wheel 211 form the receiving groove 213.

[0073] Furthermore, the first sub-wheel 211 has an annular protrusion on the side facing the second sub-wheel 212, the annular protrusion protruding along the second direction, and the inner wall of the receiving through hole has an annular limiting part on the side away from the first sub-wheel 211, the annular limiting part extending along the radial direction of the receiving through hole, the annular limiting part and the annular protrusion being correspondingly arranged, and the annular limiting part and the annular protrusion forming an installation space for the first bearing 31, so as to limit the first bearing 31 within the receiving groove 213, the first bearing 31 surrounding and limiting the adjusting wheel 22, thereby limiting the adjusting wheel 22 within the receiving groove 213.

[0074] Please refer to Figures 2 to 5 , Figure 5This is a partial cross-sectional schematic diagram of a crank structure provided in an embodiment of this application. In one embodiment, the adjusting assembly 23 includes an adjusting rod 231, the adjusting rod 231 includes a connecting portion 2311, the connecting portion 2311 passes through and rotatably connects to the connecting rod 11, the connecting portion 2311 connects to the adjusting wheel 22 and is offset from the rotation axis center of the adjusting wheel 22, and the connecting portion 2311 is used to drive the connecting rod 11 to rotate with the adjusting wheel 22.

[0075] Specifically, the connecting part 2311 passes through the first end 111 of the connecting rod 11, and connects to the adjusting wheel 22, so that the first segment can rotate around the axis of the eccentric wheel 21 following the adjusting wheel 22. Furthermore, the connecting part 2311 connects to the adjusting wheel 22, so that the connecting part 2311 can drive the adjusting wheel 22 to rotate around the axis of the adjusting wheel 22. This allows the connecting part 2311 to achieve both fixing the first end 111 and driving the adjusting wheel 22 to rotate, which simplifies the internal structure of the fascia gun 100.

[0076] Furthermore, in one embodiment, the adjusting rod 231 further includes a main body 2312 connected to the connecting portion 2311, wherein the connecting portion 2311 is offset from the rotation axis center of the main body 2312, and the rotation axis center of the main body 2312 and the rotation axis center of the adjusting wheel 22 are located on the same straight line.

[0077] The rotation axis center of the main body 2312 and the rotation axis center of the adjusting wheel 22 in the adjusting rod 231 are located on the same straight line, so that when the adjusting rod 231 rotates along the rotation axis center of the main body 2312, it can drive the adjusting wheel 22 to rotate along the rotation axis center of the main body 2312. The rotation axis center of the adjusting wheel 22 and the rotation axis center of the main body 2312 are on the same straight line, that is, the adjusting wheel 22 can rotate along its own rotation axis center, so that the adjusting rod 231 of the adjusting assembly 23 can drive the adjusting wheel 22 to rotate along the rotation axis center of the adjusting wheel 22. In other words, the adjusting rod 231 can drive the adjusting wheel 22 to rotate at the same time as it rotates.

[0078] In one embodiment, the adjusting assembly 23 further includes an adjusting screw 232 and an adjusting nut 233. The adjusting screw 232 is fixedly connected to the adjusting rod 231 and is used to drive the adjusting rod 231 to rotate. The adjusting nut 233 is sleeved on the adjusting screw 232 and is used to move along a second direction and its opposite direction so that the adjusting screw 232 rotates relative to the adjusting nut 233.

[0079] Specifically, the adjusting screw 232 passes through the adjusting nut 233, and the external thread of the adjusting screw 232 is threadedly connected to the internal thread of the adjusting nut 233, so that when the adjusting nut 233 moves up and down in the second direction, it can drive the adjusting screw 232 to rotate relative to the adjusting nut 233, thereby driving the adjusting rod 231 and the adjusting wheel 22 to rotate.

[0080] Furthermore, in this embodiment, the rotation center of the adjusting screw 232, the rotation center of the main body 2312 of the adjusting rod 231, and the rotation center of the adjusting wheel 22 are located on the same straight line. When the adjusting nut 233 moves up and down in the second direction to drive the adjusting screw 232 to rotate relative to the rotation center of the adjusting screw 232, the adjusting wheel 22 can also rotate along the rotation center of the adjusting screw 232, that is, the adjusting wheel 22 can also rotate along its own rotation center.

[0081] Furthermore, in this embodiment, the fascia gun 100 also includes a second bearing 32, which surrounds the adjusting nut 233. The rotation axis center of the adjusting nut 233 and the rotation axis center of the eccentric wheel 21 are located on the same straight line, and the adjusting nut 233 can rotate around the rotation axis center of the eccentric wheel 21.

[0082] It should be noted that, in this embodiment, the fascia gun 100 further includes a drive structure 40, which is connected to the adjusting nut 233 and is used to drive the adjusting nut 233 to move along the second direction and in the opposite direction. Specific details of the drive structure 40 will be described in detail later and should not be construed as limiting this application. Specifically, the second bearing 32 connects the drive structure 40 and the adjusting nut 233 respectively, so that the adjusting nut 233 can rotate relative to the drive structure 40.

[0083] Furthermore, the center of rotation of the adjusting nut 233 and the center of rotation of the eccentric wheel 21 are on the same straight line, so that the adjusting nut 233 can rotate around the center of rotation of the eccentric wheel 21. In other words, so that the adjusting assembly 23 can rotate around the center of rotation of the eccentric wheel 21, thereby enabling the entire crank structure 20 to effectively rotate with the output shaft of the rotating motor 92.

[0084] Furthermore, in one embodiment, the lead range of the adjusting screw 232 is 15mm-20mm.

[0085] For example, if the lead of the adjusting screw 232 is less than 15mm, the external thread of the adjusting screw 232 and the internal thread of the adjusting nut 233 are prone to self-locking. If the lead of the adjusting screw 232 is less than 15mm, when the fascia gun 100 is working, the torque generated by the impact force transmitted to the adjusting screw 232 will be transmitted to the adjusting nut 233, increasing the axial force on the adjusting nut 233. This requires a higher load-bearing capacity from the second bearing 32, increasing the manufacturing cost of the fascia gun 100. Therefore, the lead of the adjusting screw 232 is usually set to a larger lead to avoid self-locking and to prevent the second bearing 32 from bearing a large axial force during the operation of the fascia gun 100, thus reducing the manufacturing cost of the fascia gun 100.

[0086] Optionally, in this embodiment, the lead of the adjusting screw 232 can be 15mm, or 15.3mm, or 15.7mm, or 16mm, or 16.5mm, or 16.8mm, or 17mm, or 17.1mm, or 17.9mm, or 18mm, or 18.4mm, or 18.6mm, or 19mm, or 19.2mm, or 19.9mm, or 20mm, or other values ​​within the range of 15mm-20mm. This application does not impose any restrictions on this.

[0087] Please refer to Figures 2 to 8 , Figure 6 This is a top view of a connecting part, adjusting wheel, and eccentric wheel provided in an embodiment of this application. Figure 1 , Figure 7 This is a top view of a connecting part, adjusting wheel, and eccentric wheel provided in an embodiment of this application. Figure 2 , Figure 8 This is a top view of a connecting part, adjusting wheel, and eccentric wheel provided in an embodiment of this application. Figure 3 .

[0088] In one embodiment, the distance between the center of the rotating shaft of the adjusting wheel 22 and the center of the rotating shaft of the eccentric wheel 21 is E1, the distance between the center of the rotating shaft of the adjusting wheel 22 and the connecting part 2311 is E2, and the distance between the connecting part 2311 and the center of the rotating shaft of the eccentric wheel 21 is α, wherein α satisfies: (E1-E2)≤α≤(E1+E2).

[0089] The distance between the center of the rotating shaft of the adjusting wheel 22 and the connecting part 2311 is E2. In other words, the distance between the center of the rotating shaft of the adjusting wheel 22 and the connection point between the first end 111 of the connecting rod 11 and the adjusting wheel 22 is E2, and the distance between the center of the rotating shaft of the adjusting wheel 22 and the hinge axis of the connecting rod is E2. The distance between the center of the rotating shaft of the connecting part 2311 and the eccentric wheel 21 is α. In other words, the distance between the connection point between the first end 111 and the adjusting wheel 22 and the center of the rotating shaft of the eccentric wheel 21 is α, and the eccentricity of the crank structure 20 is α.

[0090] Specifically, if the eccentricity α of the crank structure 20 is equal to E1-E2, then... Figure 7 As shown, when the connecting part 2311 is located along the first direction at one end of the shaft center of the adjusting wheel 22 near the shaft center of the eccentric wheel 21, the distance α between the connecting part 2311 and the shaft center of the eccentric wheel 21 is the minimum value E1-E2; if the eccentricity α of the crank structure 20 is equal to E1+E2, as... Figure 8 As shown, when the connecting part 2311 is located at the end of the axis of the adjusting wheel 22 away from the axis of the eccentric wheel 21 along the first direction, the distance α between the connecting part 2311 and the axis of the eccentric wheel 21 is the maximum value E1+E2; when the connecting part 2311 rotates around the axis of the adjusting wheel 22 and is in the middle position of the above two, the distance α between the connecting part 2311 and the axis of the eccentric wheel 21 satisfies: (E1-E2)≤α≤(E1+E2).

[0091] It should be noted that the distance α between the connecting part 2311 and the center of the eccentric wheel 21 satisfies: (E1-E2)≤α≤(E1+E2), and the stroke adjustment range β of the piston rod 12 and the massage head 91 in the fascia gun 100 satisfies: 2*(E1-E2)≤β≤2*(E1+E2).

[0092] Further, optionally, in one embodiment, the distance E1 between the center of rotation of the adjusting wheel 22 and the center of rotation of the eccentric wheel 21 is 4mm, and the distance E2 between the center of rotation of the adjusting wheel 22 and the connecting part 2311 is 4mm, as an example, and should not be construed as a limitation of this application. When E1=4mm and E2=4mm, the distance α between the connecting part 2311 and the center of rotation of the eccentric wheel 21 satisfies: 0mm≤α≤8mm, and the corresponding stroke adjustment range β of the piston rod 12 and the massage head 91 within the fascia gun 100 satisfies: 0mm≤β≤16mm. It should be noted that in this embodiment, E2 is equal to E1; in other embodiments, E2 may be greater than or less than E1, such as... Figure 7 and Figure 8 As shown, when E2 is greater than E1, that is, the distance α between the center of the shaft of the connecting part 2311 and the eccentric wheel 21 is always greater than 0, so that the eccentricity of the crank structure 20 is always greater than 0, so that the fascia gun 100 can work effectively.

[0093] The fascia gun 100 provided in this application can control the distance α between the rotating shaft centers of the connecting part 2311 and the eccentric wheel 21 and the stroke adjustment range β of the massage head 91 by adjusting the distance E1 between the rotating shaft centers of the connecting part 2311 and the adjusting wheel 22 and the eccentric wheel 21. This is beneficial to increasing the stroke adjustment range of the fascia gun 100, further enriching the application scenarios of the fascia gun 100 and improving its practical performance.

[0094] Please refer to Figures 6 to 9 , Figure 9 This is a schematic diagram showing the connection between the connecting part, the center of the rotating shaft of the adjusting wheel, and the center of the rotating shaft of the eccentric wheel, according to an embodiment of this application.

[0095] In one embodiment, in the first direction, the line connecting the center of the pivot of the adjusting wheel 22 and the connecting part 2311 forms an angle θ with the first direction away from the eccentric wheel 21, and the connecting rod hinge axis is the center of the pivot of the connecting part 2311. In other words, the line connecting the connecting rod hinge axis and the center of the pivot of the adjusting wheel 22 forms an angle θ with the first direction away from the center of the pivot of the eccentric wheel 21. The distance α between the center of the pivot of the connecting part 2311 and the eccentric wheel 21 satisfies:

[0096] .

[0097] As can be seen from the above formula, the distance between the connecting rod hinge shaft and the center of the eccentric wheel 21 will continuously increase or continuously decrease. In other words, the eccentricity of the crank structure 20 will continuously increase or continuously decrease, thereby causing the stroke of the second end 112 of the connecting rod 11 to continuously increase or continuously decrease, which can realize the stepless adjustment of the stroke of the massage head 91 on the fascia gun 100.

[0098] Please refer to Figures 2 to 5 In one embodiment, the drive structure 40 includes a linear drive motor, which is a cylinder. The linear drive motor is connected to the second bearing 32 on the outer periphery of the adjusting nut 233 and is used to drive the second bearing 32 and the adjusting nut 233 to move along the second direction and in the opposite direction.

[0099] The drive structure 40 includes the linear drive motor, which enables the adjusting nut 233 to move in the second direction or the opposite direction, thereby driving the adjusting screw 232, the adjusting rod 231 and the adjusting wheel 22 to rotate, thereby adjusting the stroke of the massage head 91 on the fascia gun 100 without requiring manual adjustment by the user, which can improve the intelligence and practicality of the fascia gun 100.

[0100] Furthermore, in one embodiment, the fascia gun 100 also includes a display screen and a controller. The display screen is disposed on the outer periphery of the housing 50 and electrically connected to the controller. The controller is electrically connected to the linear drive motor. The controller can be used to calculate the massage stroke of the fascia gun 100 at this time based on the rotation degree of the linear drive motor, and then output the massage stroke of the fascia gun 100 to the display screen for display, so as to prompt the user about the specific massage stroke of the fascia gun 100 at this time, thereby further improving the practicality and functionality of the fascia gun 100.

[0101] Please refer to Figures 2 to 5 , Figures 10 to 11 , Figure 10 This application provides a schematic diagram of a fascia gun including a driving structure. Figure 11 An exploded view of a fascia gun including a drive structure is provided in the embodiments of this application.

[0102] In one embodiment, the drive structure 40 includes a fixed nut 41, a movable screw 42, and a knob 43. The fixed nut 41 is fixed to the outer casing 50. The movable screw 42 is disposed inside the fixed nut 41, and the outer peripheral sidewall of the movable screw 42 is threadedly connected to the inner peripheral sidewall of the fixed nut 41. The inner peripheral sidewall of the movable screw 42 is connected to the adjusting nut 233 and is used to drive the adjusting nut 233 to move along the second direction and in the opposite direction. The movable screw 42 is slidably connected to the knob 43. When the knob 43 rotates, it drives the movable screw 42 to rotate relative to the fixed nut 41. The movable screw 42 moves relative to the knob 43 along the second direction or in the opposite direction, thereby driving the adjusting nut 233 to move along the second direction or in the opposite direction.

[0103] The fixing nut 41 is fixed to the housing 50. Furthermore, the fixing nut 41 has a first axially penetrating receiving space for accommodating the movable screw 42, so that the movable screw 42 is disposed within the fixing nut 41. Additionally, the outer peripheral sidewall of the movable screw 42 is threadedly connected to the inner peripheral sidewall of the fixing nut 41, allowing the movable screw 42 to rotate relative to the fixing nut 41 and move along the second direction or the opposite direction.

[0104] Furthermore, the movable screw 42 has a second axially extending receiving space for accommodating the second bearing 32 and the nut. The movable screw 42 is fixedly connected to the second bearing 32, that is, the movable screw 42 is fixedly connected to the adjusting nut 233 through the second bearing 32, so that when the movable screw 42 rotates relative to the fixed nut 41 and moves in the second direction or the opposite direction, it can drive the adjusting nut 233 to move synchronously in the second direction or the opposite direction.

[0105] Specifically, the inner circumferential sidewall of the movable screw 42 is provided with a bearing step for placing the second bearing 32 on the outer periphery of the adjusting nut 233. Furthermore, the second bearing 32 is locked into the movable screw 42 with screws, so that the movable screw 42, the second bearing 32, and the adjusting nut 233 can be effectively fixed. This allows the movable screw 42 to effectively drive the adjusting nut 233 to move in the second direction or the opposite direction, thereby improving the installation stability of the adjusting nut 233 and the second bearing 32.

[0106] The movable screw 42 is slidably connected to the knob 43. Specifically, the knob 43 is provided with a plurality of insertion portions 431 along the circumference. The insertion portions 431 extend in the opposite direction to the second direction. The movable screw 42 is provided with a plurality of insertion holes 421 along the circumference. One insertion portion 431 corresponds to one insertion hole 421, and the plurality of insertion portions 431 are disposed in the plurality of insertion holes 421, so that the knob 43 can drive the movable screw 42 to rotate relative to the fixed nut 41.

[0107] Furthermore, the insertion part 431 and the insertion hole 421 are slidably connected along the second direction, so that while the knob 43 drives the movable screw 42 to rotate relative to the fixed nut 41, the movable screw 42 can move relative to the knob 43 and the fixed nut 41 in the second direction or the opposite direction of the second direction.

[0108] The fascia gun 100 provided in this application allows the user to rotate the knob 43, causing the adjusting screw to rotate and move along the second direction or the opposite direction, thereby causing the adjusting nut 233 to move along the second direction or the opposite direction, and in turn causing the adjusting screw 232, the adjusting rod 231, and the adjusting wheel 22 to rotate, thereby adjusting the stroke of the massage head 91 on the fascia gun 100. In other words, the user can manually adjust the stroke of the fascia gun 100, which helps to improve the convenience and practicality of the fascia gun 100.

[0109] Furthermore, in one embodiment, the lead range of the fixed nut 41 and the movable screw 42 is 2mm-8mm.

[0110] For example, if the lead of the fixed nut 41 and the movable screw 42 is greater than 8mm, it is not easy for the fixed nut 41 and the movable screw 42 to self-lock, and a large torque is required when the fixed nut 41 and the movable screw 42 rotate. That is, the user needs to use a large force when turning the knob 43, which will reduce the user experience of the fascia gun 100. Therefore, the lead of the fixed nut 41 and the movable screw 42 is usually set to a small lead so that the knob 43 can easily self-lock and the force required for the user to turn the knob 43 can be reduced, making it easier for the user to interact with the fascia gun 100.

[0111] Optionally, in this embodiment, the lead of the fixed nut 41 and the movable screw 42 can be 2mm, or 2.2mm, or 2.5mm, or 2.7mm, or 3mm, or 3.1mm, or 3.5mm, or 4mm, or 4.3mm, or 4.7mm, or 5mm, or 5.4mm, or 5.8mm, or 6mm, or 6.7mm, or 6.9mm, or 7mm, or 7.5mm, or 8mm, or other values ​​within the range of 2mm-8mm. This application does not impose any restrictions on these values.

[0112] Further, in this embodiment, the fixed nut 41, the movable screw 42, and the knob 43 cooperate to convert the rotational motion of the knob 43 into the linear motion of the movable screw 42 and the movable nut. The movable nut and the adjusting screw cooperate to convert the linear motion of the movable nut into the rotational motion of the adjusting screw, the adjusting rod 231, and the adjusting wheel 22, thereby adjusting the stroke of the fascia gun 100. The rotation angle of the knob 43 is C1, the rotation angle of the adjusting wheel 22 is C2, the lead of the knob 43 (the lead of the fixed nut 41 and the movable screw 42) is D1, and the lead of the adjusting screw is D2. C1, C2, D1, and D2 satisfy the formula:

[0113] .

[0114] Furthermore, the lead of the adjusting screw is relatively large, while the lead of the knob 43 (and the leads of the fixed nut 41 and the movable screw 42) is relatively small. This may result in the user needing to rotate the knob 43 multiple times to adjust the stroke of the fascia gun 100 when manually adjusting it, which is inconvenient for user interaction. In other embodiments, the fascia gun 100 also includes a transmission mechanism, which is connected to the knob 43 and the movable nut respectively. The transmission mechanism can be used to change the transmission of the knob 43 and the movable nut, so that the user can adjust the stroke of the fascia gun 100 by rotating the knob 43 fewer times when manually adjusting it, thereby improving the convenience of interaction between the fascia gun 100 and the user.

[0115] Please refer to Figures 2 to 5 In one embodiment, the fascia gun 100 further includes a plurality of buffers 60, at least one of the buffers 60 being disposed between the fixing nut 41 and the housing 50, which helps to reduce the noise generated when the fascia gun 100 is working.

[0116] Furthermore, in one embodiment, the fascia gun 100 further includes a limiting bearing 70, which is fixed within the housing 50 and disposed between the piston rod 12 and the housing 50. The limiting bearing 70 is slidably connected to the piston rod 12 to restrict the piston rod 12 from sliding along the first direction and its opposite direction. At least one buffer 60 is disposed between the limiting bearing 70 and the housing 50, which helps to reduce the noise generated when the fascia gun 100 is in operation.

[0117] Furthermore, in one embodiment, the fascia gun 100 further includes a mounting member 80, which is fixed within the housing 50 and is used to mount the rotary motor 92. At least one buffer member 60 is disposed between the mounting member 80 and the housing 50, which helps to reduce the noise generated when the fascia gun 100 is in operation.

[0118] In this application, the terms "embodiment" and "implementation" mean that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of these phrases in various locations throughout the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art will understand, explicitly and implicitly, that the embodiments described in this application can be combined with other embodiments. Furthermore, it should be understood that the features, structures, or characteristics described in the various embodiments of this application can be arbitrarily combined to form another embodiment that does not depart from the spirit and scope of the technical solution of this application, provided there is no contradiction between them.

[0119] The above description represents some embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

Claims

1. A fascia gun, characterized in that, include: A connecting rod and a piston rod, one end of the connecting rod being rotatably connected to the piston rod, the piston rod being reciprocated along a first direction; Crank structure, including: Eccentric wheel; An adjusting wheel is provided on the eccentric wheel and can rotate with the eccentric wheel. The center of the rotating shaft of the adjusting wheel and the center of the rotating shaft of the eccentric wheel are spaced apart. The end of the connecting rod away from the piston rod is connected to the adjusting wheel, and there is an eccentric distance between the hinge rotation center of the connecting rod and the adjusting wheel and the center of the rotating shaft of the adjusting wheel. An adjustment assembly is connected to the adjustment wheel. The adjustment assembly is used to drive the adjustment wheel to rotate relative to the eccentric wheel, and to drive the end of the connecting rod away from the piston rod to rotate relative to the eccentric wheel, so as to adjust the distance between the end of the connecting rod away from the piston rod and the center of the rotation axis of the eccentric wheel, thereby adjusting the stroke of the piston rod along the first direction.

2. The fascia gun of claim 1, wherein, The eccentric wheel has a receiving groove on the side facing the connecting rod, and the adjusting wheel is located in the receiving groove of the eccentric wheel.

3. The fascia gun of claim 2, wherein, The crank structure also includes a first bearing, which is disposed within the receiving groove and surrounds the adjusting wheel so that the adjusting wheel can rotate relative to the eccentric wheel.

4. The fascia gun of claim 1, wherein, The adjustment assembly includes an adjustment rod, the adjustment rod includes a connecting part, the connecting part passes through and rotatably connects to the connecting rod, the connecting part connects to the adjustment wheel and is offset from the rotation axis center of the adjustment wheel, and the connecting part is used to drive the connecting rod to rotate with the adjustment wheel.

5. The fascia gun of claim 4, wherein, The adjusting rod also includes a main body connected to the connecting part. The connecting part is offset from the rotation axis center of the main body, and the rotation axis center of the main body and the rotation axis center of the adjusting wheel are located on the same straight line.

6. The fascia gun of claim 5, wherein, The adjusting assembly further includes an adjusting screw and an adjusting nut. The adjusting screw is fixedly connected to the adjusting rod and is used to drive the adjusting rod to rotate. The adjusting nut is sleeved on the adjusting screw and is used to move along a second direction and its opposite direction so that the adjusting screw rotates relative to the adjusting nut. The second direction is perpendicular to the first direction.

7. The fascia gun of claim 6, wherein, The center of rotation of the adjusting screw, the center of rotation of the main body of the adjusting rod, and the center of rotation of the adjusting wheel are all located on the same straight line.

8. The fascia gun of claim 6, wherein, The fascia gun also includes a second bearing, which surrounds the adjusting nut. The center of rotation of the adjusting nut and the center of rotation of the eccentric wheel are located on the same straight line, and the adjusting nut can rotate around the center of rotation of the eccentric wheel.

9. The fascia gun of claim 6, wherein, The lead range of the adjusting screw is 15mm-20mm.

10. The fascia gun of claim 6, wherein, The distance between the center of the adjusting wheel's shaft and the center of the eccentric wheel's shaft is E1, the distance between the center of the adjusting wheel's shaft and the connecting part is E2, and the distance between the connecting part and the center of the eccentric wheel's shaft is α, where α satisfies: (E1-E2)≤α≤(E1+E2).

11. The fascia gun of claim 10, wherein, In the first direction, the line connecting the center of the adjusting wheel's shaft and the connecting part forms an angle θ with the first direction away from the eccentric wheel, wherein α satisfies: 。 12. The fascia gun of claim 8, wherein, The fascia gun also includes a drive structure connected to the adjusting nut, which drives the adjusting nut to move along the second direction and in the opposite direction.

13. The fascia gun of claim 12, wherein, The drive structure includes a linear drive motor, which is a cylinder. The linear drive motor is connected to the second bearing on the outer periphery of the adjusting nut and is used to drive the second bearing and the adjusting nut to move along the second direction and in the opposite direction.

14. The fascia gun of claim 12, wherein, The fascia gun also includes a housing. The drive structure includes a fixed nut, a movable screw, and a knob. The fixed nut is fixed to the housing. The movable screw is located inside the fixed nut, and its outer peripheral sidewall is threadedly connected to the inner peripheral sidewall of the fixed nut. The inner peripheral sidewall of the movable screw is connected to the adjusting nut and is used to drive the adjusting nut to move along the second direction and its opposite direction. The movable screw is slidably connected to the knob. When the knob rotates, it drives the movable screw to rotate relative to the fixed nut. The movable screw moves relative to the knob along the second direction or the opposite direction of the second direction, thereby driving the adjusting nut to move along the second direction or the opposite direction of the second direction.

15. The fascia gun of claim 14, wherein, The lead range of the fixed nut and the movable screw is 2mm-8mm.

16. The fascia gun of claim 14, wherein, The inner circumferential sidewall of the movable screw is provided with a bearing step for placing the second bearing on the outer circumference of the adjusting nut.

17. The fascia gun of claim 14, wherein, The fascia gun also includes multiple buffers, at least one of which is disposed between the fixing nut and the housing.

Images