CN215840367U - Drive mechanism and manadesma rifle of manadesma rifle - Google Patents

Abstract

The utility model relates to the technical field of massage equipment, in particular to a driving mechanism of a fascia gun and the fascia gun. The transmission mechanism comprises a driving device, a cam assembly, a connecting rod assembly and a restraining member. The cam assembly is in transmission connection with a driving device, and the driving device is used for providing power for the cam assembly; one end of the connecting rod component is in transmission connection with the cam component, and the other end of the connecting rod is connected with the massage component; under the driving of the cam component and the restraint action of the restraint component, the connecting rod component only extends and retracts along the linear direction, so that the massage component and the connecting rod component synchronously extend and retract along the linear direction. Adopt this drive mechanism's manadesma rifle, the connecting rod subassembly only moves along linear direction, and whole vibrations are little, can not feel hand anesthesia when lasting handheld.

Description

Drive mechanism and manadesma rifle of manadesma rifle

Technical Field

The utility model relates to the technical field of massage equipment, in particular to a driving mechanism of a fascia gun and the fascia gun.

Background

In daily life, after a person exercises, the body reactions such as muscle tension, lactic acid accumulation, oxygen deficiency and the like can occur, and particularly after the person exercises excessively, the muscles are very stiff and difficult to recover by oneself. At present, the fascia gun is the most commonly used device for solving the problems of muscle tension and the like, and the recovery time and efficiency after exercise can be improved with the help of the fascia gun.

The connecting rod part in the transmission mechanism of the existing fascia gun can do reciprocating linear motion and also can do circumferential swing under the driving action of the driving device, so that the whole transmission mechanism of the fascia gun can vibrate greatly, particularly the handle part of the fascia gun vibrates strongly, and after a user holds the fascia gun for a long time, the problems of hand numbness and the like easily occur.

SUMMERY OF THE UTILITY MODEL

The application discloses drive mechanism and manadesma rifle of manadesma rifle, use this drive mechanism's manadesma rifle, whole vibrations are little, when using for a long time handheld, can not feel hand anesthesia.

In a first aspect, the present application discloses a driving mechanism of a fascia gun, the fascia gun is provided with a massage component, the driving mechanism is used for driving the massage component to move, and the driving mechanism includes:

a drive device;

the cam assembly is in transmission connection with the driving device, and the driving device is used for providing power for the cam assembly;

one end of the connecting rod component is in transmission connection with the cam component, and the other end of the connecting rod component is connected with the massage component;

and the constraint piece is driven by the cam assembly and constrained by the constraint piece, and the connecting rod assembly is only suitable for telescopic motion along a linear direction, so that the massage assembly and the connecting rod assembly synchronously telescopic motion along the linear direction.

Further, the cam assembly has first and second opposed faces, the drive means being mounted on the first face, the one end of the connecting rod assembly being connected to the second face.

Further, the cam assembly comprises:

the cam body, the cam body with drive arrangement transmission is connected, a side of cam body is equipped with the annular groove, the center of annular groove for the rotatory center of cam body is to first direction eccentric settings, the connecting rod subassembly one end stretch into in the annular groove, and when the cam body rotated, the connecting rod subassembly one end was in slide in the annular groove.

Further, the corners of the annular groove are rounded corners.

Further, the cam body is also provided with a counterweight part, and the counterweight part is used for enabling the rotation center of the cam body to coincide with the center of the cam body.

Further, the weight part is a boss eccentrically arranged in a first direction relative to the rotation center of the cam body; alternatively, the first and second electrodes may be,

the weight portion is a groove eccentrically arranged in a second direction opposite to the first direction relative to the rotation center of the cam body.

Further, the annular groove is in an oblong shape, the annular groove is provided with a long axis and a short axis which are perpendicular to each other, the long axis passes through the rotation center of the cam body, and the direction of the long axis is the direction of the longest line segment which can be obtained by connecting two points on the oblong shape.

Further, the cam assembly further comprises:

the connecting piece, the one end of connecting rod subassembly passes through the connecting piece is connected in the annular groove, just the connecting piece with the annular groove forms the roll fit.

Further, the cam assembly further comprises:

the connecting piece, the connecting rod subassembly the one end is passed through the connecting piece is connected in the annular groove, the connecting piece with still be equipped with the bolster between the annular groove.

Furthermore, a rotating shaft is arranged on the driving device, a first through hole in matched connection with the rotating shaft is formed in the center of the cam body, and the rotating shaft extends into the first through hole and forms non-rotation matching.

Further, the cam assembly further comprises a cam connecting screw and a gasket, the rotating shaft is provided with a threaded hole connected with the cam connecting screw in a matched mode, the gasket is locked on the cam assembly through the cam connecting screw, and the outer diameter of the gasket is larger than the inner diameter of the first through hole.

Further, the peripheral surface of the rotating shaft extends outwards in the radial direction to form a limiting part, the limiting part is spaced from the body of the driving device assembly, and the cam assembly abuts against the limiting part to be spaced from the body of the driving device; or

The rotating shaft comprises a first section and a second section, the first section is connected with the body of the driving device and extends out of the body of the driving device, the second section is connected with the first section, the second section is suitable for extending into the first through hole, and a step surface formed by the first section and the second section is abutted to the cam assembly so that the cam assembly is spaced from the body of the driving device.

Further, the connecting rod assembly includes:

the piston is connected with the massage head assembly;

a connecting rod connected to the piston and the cam assembly respectively,

the connecting rod and the piston form non-rotary connection, or the connecting rod and the piston are integrally formed;

the restraint is for restraining at least one of the piston and the connecting rod.

Furthermore, the restraint piece is a lining, the piston is suitable for extending into the lining to slide along a straight line in a telescopic mode, and the restraint piece is fixedly connected with the body of the fascial gun.

Furthermore, the restraint piece comprises two oppositely arranged baffles, the two baffles are connected to the body of the fascial gun and form a linear slideway, the connecting rod is clamped between the two baffles to be restrained, and the connecting rod can slide in the linear slideway.

Further, the connecting rod is rotatably connected with the cam assembly.

In a second aspect, the present application also discloses a fascia gun comprising the transmission mechanism of any of claims 1-16.

Compared with the prior art, the utility model has the following beneficial effects:

the connecting rod assembly in the transmission mechanism only performs telescopic motion along the linear direction, and the fascia gun has the advantages of small vibration and high transmission efficiency. Specifically, the cam assembly, the connecting rod assembly and the restraint member are arranged in the transmission mechanism and matched to realize that the connecting rod assembly only performs telescopic motion along the linear direction, so that the connecting rod assembly drives the massage assembly to perform synchronous telescopic motion along the linear direction. The cam component is in transmission connection with the driving device and moves under the action of the driving device, one end of the connecting rod component is in transmission connection with the cam component, and the other end of the connecting rod component is connected with the massage component. When the cam assembly moves, one end of the connecting rod assembly can move under the driving of the cam assembly, the other end of the connecting rod assembly can drive the massage assembly to move simultaneously, and the constraint assembly has a constraint effect on the connecting rod assembly, namely the constraint assembly can limit the moving direction of the connecting rod assembly, so that the connecting rod assembly can only perform telescopic motion along the linear direction under the matching of the cam assembly and the constraint assembly, and the massage assembly connected with the connecting rod assembly can also perform linear telescopic motion synchronously.

Therefore, the connecting rod component can only do telescopic motion along the linear direction, so the massage component driven by the connecting rod component only does telescopic motion along the linear direction, and the circumferential swing cannot happen. Therefore, the fascia gun can be guaranteed to have small overall vibration and high transmission efficiency, and particularly when the fascia gun is held for a long time, the fascia gun has small overall vibration, so that a user can not cause hand numbness due to vibration of a handle of the massage equipment when the fascia gun is continuously used.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the structure of a fascial gun in an embodiment of the present application;

FIG. 2 is an exploded view of the fascia gun of the present embodiment;

FIG. 3 is an exploded view of the drive mechanism in an embodiment of the present application;

FIG. 4 is an exploded view of the cam assembly of the embodiment of the present application (with the attachment elements omitted);

FIG. 5 is a schematic view of a first side of the cam body of FIG. 4;

FIG. 6 is a schematic view of the linkage assembly of the embodiment of the present application as it moves linearly away from the massage assembly;

FIG. 7 is a schematic view of the embodiment of the present application showing the link assembly positioned closest to the massage assembly during linear movement of the drive mechanism;

FIG. 8 is a schematic structural diagram of a driving device in an embodiment of the present application;

FIG. 9 is an enlarged view of a portion of the shaft of FIG. 8;

FIG. 10 is an exploded view of the connector rod assembly of the embodiment of the present application;

fig. 11 is an exploded view of the connection member and the bearing assembly of the embodiment of the present application.

Reference numerals: 1-transmission mechanism, 11-driving device, 111-rotating shaft, 1111-threaded hole, 1112-limiting part, 12-cam component, 121-cam body, 121 a-first surface, 121 b-second surface, 1211-annular groove, 1212-counterweight hole, 1213-first through hole, 122-connecting piece, 123-bearing, 124-cam connecting screw, 125-gasket, 13-connecting rod component, 131-piston, 1311-second through hole, 132-connecting rod, 1321-third through hole, 1322-fourth through hole, 133-connecting rod fixing bolt, 14-constraint component, 2-massage component, 3-massage head shell, 4-upper shell, 5-handle and 6-base.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the utility model and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The technical solution of the present application will be further described with reference to the following embodiments and accompanying drawings.

Referring to fig. 1 to 11, an embodiment of the present application provides a fascia gun and a driving mechanism installed in the fascia gun. Specifically, referring to fig. 1 and 2, an embodiment of the present application discloses a fascia gun, a transmission mechanism 1 is disposed inside the fascia gun, a massage assembly 2 is further disposed inside the fascia gun, and the transmission mechanism 1 is used for driving the massage assembly 2 to move. Wherein, this fascia rifle still includes: the massage device comprises a massage head shell 3, an upper shell 4 and a handle 5 which are oppositely arranged, wherein the upper shell 4 and the handle 5 are oppositely arranged and are matched and connected together to form a roughly cylindrical cavity, one end of the cylindrical cavity is provided with the massage component 2 and the massage head shell 3, and the other end of the cylindrical cavity is provided with a base 6. The transmission mechanism 1 is installed in the chamber, and the transmission mechanism 1 drives the massage assembly 2 to do telescopic motion by being directly or indirectly connected with the massage assembly 2 in the chamber, namely, the massage assembly 2 does telescopic motion along the left-right straight line direction in fig. 1.

The massage head housing 3, the upper housing 4, and the handle 5 of the fascia gun may be an integral structure or a separate structure. When the three are split structures, the assembly, the disassembly and the maintenance of each part of the fascia gun are convenient.

As shown in fig. 2 and 3, the transmission mechanism 1 includes:

a drive device 11;

the cam assembly 12, the cam assembly 12 is in transmission connection with the driving device 11, and the driving device 11 is used for providing power for the cam assembly 12;

a connecting rod assembly 13, one end (the end on the right side of the connecting rod assembly in fig. 3) of the connecting rod assembly 13 is in transmission connection with the cam assembly 12, and the other end (the end on the left side of the connecting rod assembly in fig. 3) of the connecting rod assembly 13 is connected with the massage assembly 2;

the restraining component 14, under the driving of the cam component 12 and the restraining action of the restraining component 14, the connecting rod component 13 is only suitable for telescopic movement along the linear direction, so that the massage component 2 and the connecting rod component 13 synchronously move in a telescopic manner along the linear direction.

In the embodiment of the present application, the driving device 11 is connected to the cam assembly 13 and provides power for the movement of the cam assembly 12, and when the driving device 11 is operated, the cam assembly 12 is moved by the driving device 11. Because the one end and the cam subassembly 12 transmission of connecting rod subassembly 13 are connected, the other end and the massage subassembly 2 of connecting rod subassembly 13 are connected, consequently cam subassembly 12 can drive the one end of connecting rod subassembly 13 and move, and drive the massage subassembly 2 of being connected with the other end of connecting rod subassembly 13 and also move, simultaneously because restraint piece among the drive mechanism 1 has the restraint effect to connecting rod subassembly 13, can restrict connecting rod subassembly 13 and only carry out concertina movement along the rectilinear direction, also connecting rod subassembly 13 carries out concertina movement along the rectilinear direction under the drive of cam subassembly 12 and restraint effect of restraint piece 14, at this moment, massage subassembly 2 can also carry out concertina movement along the rectilinear direction in step under connecting rod subassembly 13 drives.

Therefore, the connecting rod assembly 13 can only do telescopic motion along the linear direction in the fascia gun, the problem that the connecting rod assembly 13 swings in motion is avoided, the overall vibration is small, the power provided by the driving device 11 is only used for doing reciprocating linear telescopic motion, the transmission efficiency is high, and when a user holds the fascia gun for use, the user does not feel hand numbness due to small vibration when continuously using the fascia gun.

It should be noted that the massage unit 2 includes a massage part structure of a fascia gun, and the massage part structure refers to a part for directly contacting and massaging a human body.

It should be further noted that the constraint action of the constraint component 14 means that the connecting rod component 13 is limited to move only along the linear direction, the constraint component 14 may be a limit groove formed by extending along the telescopic movement direction of the massage component 2 and arranged outside the connecting rod component 13 in a matching manner, the connecting rod component 13 is limited by extending the connecting rod component 13 into the limit groove, or the limit blocks are arranged on two sides of the connecting rod component 13 and arranged oppositely, so as to limit the connecting rod component 13 in the telescopic movement direction of the massage component 2, and the embodiment of the present application is not limited herein.

Referring to fig. 4 and 5, the cam assembly 12 has a first surface 121a (a lower surface of the cam body in fig. 5) and a second surface 121b (an upper surface of the cam body in fig. 4) opposite to each other, the driving device 11 is installed on the first surface 121a, and one end of the connecting rod assembly 13 is connected to the second surface 121 b.

In order to facilitate the handheld use of the fascia gun, the volume of the fascia gun is as small as possible, in the embodiment of the application, the connecting rod assembly 13 and the driving device 11 are respectively arranged on two opposite surfaces of the cam assembly 12, so that the driving device 11 can drive the connecting rod assembly 13 to move through the cam assembly 12, the driving device 11, the cam assembly 12 and the connecting rod assembly 13 can be conveniently and reasonably arranged, and the inner space of the fascia gun is saved. In some embodiments, the driving device 11 is a motor, and the axial direction of the motor, the axial direction of the cam assembly 12, and the length direction of the connecting rod assembly 13 are in the same linear direction, so as to save space perpendicular to the linear direction; in other embodiments, as shown in fig. 2, the axial direction of the motor and the axial direction of the cam assembly 12 are in the same straight line direction and perpendicular to the length direction of the connecting rod assembly 13, i.e. the connecting rod assembly 13 and the motor and the cam assembly 12 form a shape similar to a pistol, which facilitates the positioning of the motor and the cam assembly 12 close to the handle 5, saves space between the upper housing 4 and the handle 5, and facilitates the operation of the fascial gun by a user holding the handle 13.

In addition, the outer edge of the second surface 121b of the cam body 121 is formed in a chamfered structure. Specifically, a chamfer structure is formed by inclining the upper part of the circumferential side wall of the cam body 121 to the outer edge of the second face 121b, wherein the chamfer structure can be a chamfer angle structure or a fillet structure, and the chamfer structure can be adopted to prevent the cam body 121 from rubbing with the connecting rod assembly 13 during rotation on one hand and facilitate assembly with the shell of the fascial gun on the other hand.

With continued reference to fig. 4, cam assembly 12 includes: the cam body 121, the cam body 121 is connected with the driving device 11 in a transmission manner, one side of the cam body 121 is provided with an annular groove 1211, the center of the annular groove 1211 is eccentrically arranged towards the first direction relative to the rotation center of the cam body 121, one end of the connecting rod assembly 13 extends into the annular groove 1211, and when the cam body 121 rotates, one end of the connecting rod assembly 13 slides in the annular groove 1211.

In the embodiment of the present application, since the second surface 121b of the cam body 121 is provided with the eccentrically disposed annular groove 1211, one end of the connecting rod assembly 13 (the right end of the connecting rod assembly 13 in fig. 3) extends into the annular groove 1211 and is in transmission connection with the annular groove 1211, so that when the cam body 121 rotates under the action of the driving device 11, the annular groove 1211 disposed on the cam body 121 also rotates. In addition, the center of the annular groove 1211 is not coincident with the rotation center of the cam body 121, so that the eccentric arrangement is performed, the rotation center position of the annular groove 1211 is different from the structural center of the annular groove 1211, when the structure connected with the annular groove 1211 is limited in a single direction, the effect of only having continuous linear motion and not making circular swing can be obtained, therefore, the connecting rod assembly 13 extending into the eccentrically arranged annular groove 1211 can generate displacement under the driving of the annular groove 1211, meanwhile, the other end (the left end of the connecting rod assembly 13 in fig. 3) of the connecting rod assembly 13 is fixedly connected with the massage assembly 2, and the restraining element 14 restrains the connecting rod assembly 13 from performing telescopic motion only along the linear direction, so that the connecting rod assembly 13 can generate displacement only along the linear direction, the massage assembly 2 can generate displacement only along the linear direction under the driving of the connecting rod assembly 13, thereby avoiding the connecting rod assembly 13 from doing circular swing motion, reducing the noise generated when the assembly moves and reducing the power waste.

Further, with reference to fig. 4 and 5, since the cam body 121 is provided with the annular groove 1211, and the center of the annular groove 1211 is eccentrically disposed in the first direction with respect to the rotation center of the cam body 121, in this case, the weight of one side of the cam body 121 facing the first direction (the portion of the cam body facing the right side in fig. 4) is smaller than the weight of one side facing the second direction (the portion of the cam body facing the left side in fig. 4), which may cause the rotation center of the cam body 121 to be misaligned with the center of the cam body 121, and the cam body 121 may be unbalanced in rotation, thereby affecting the transmission of the connecting rod assembly 13 by the cam body 121, and further causing the connecting rod assembly 13 to generate deflection in transmission. In order to make the telescopic motion of the connecting rod assembly 13 in the linear direction more stable, the cam body 121 is further provided with a weight part for making the rotation center of the cam body 121 coincide with the center of the cam body 121.

In some embodiments, the weight is a boss (not shown) that is eccentrically disposed in the first direction with respect to the rotational center of the cam body 121. Since the weight of the cam body 121 facing the first direction is smaller than the weight of the cam body 121 facing the second direction, the cam is eccentrically disposed in the first direction with respect to the rotational center of the cam body 121, and the weight of the cam body 121 facing the first direction is increased, so that the weight of the cam body 121 facing the first direction and the weight of the cam body 121 facing the second direction are close to or equal to each other, and the rotational center of the cam body 121 coincides with the center of the cam body 121, thereby stably driving the cam body 121. The boss may be a rectangular parallelepiped, a cube, a circle, and the like, which is not specifically limited in this application embodiment.

In other embodiments, the weight is a groove (not shown) that is eccentrically disposed in the second direction with respect to the rotational center of the cam body 121. Since the weight of the cam body 121 on the side facing the first direction is smaller than the weight of the cam body 121 on the side facing the second direction, the groove is eccentrically disposed in the second direction with respect to the rotational center of the cam body 121, and the weight of the cam body 121 on the side facing the second direction is reduced, so that the weight of the cam body 121 on the side facing the first direction and the weight of the cam body 121 on the side facing the second direction are close to or equal to each other, and the rotational center of the cam body 121 coincides with the center of the cam body 121, thereby stably driving the cam body 121. The shape of the groove may be circular, square, oval, etc., and the embodiments of the present application are not limited in this respect.

In still other embodiments, with continued reference to fig. 4, the weight portion is a weight port 1212 eccentrically disposed in a second direction with respect to the center of rotation of the cam body 121. The weight port 1212, which is eccentrically disposed in the second direction with respect to the rotation center of the cam body 121, reduces the weight of the cam body 121 toward the side of the second direction, so that the weight of the cam body 121 toward the side of the first direction and the weight of the cam body 121 toward the side of the second direction are close to or equal to each other, and the rotation center of the cam body 121 coincides with the center of the cam body 121, thereby stably driving the cam body 121. The shape of the weight port 1212 may be circular, square, oval, and the like, which is not limited in this embodiment.

Further, the shape of the annular groove 1211 may be elliptical, circular, or oblong.

When the annular groove 1211 is oval, round or oblong, because the annular groove 1211 is regularly closed, when the annular groove 1211 rotates along with the cam body 121, one end of the connecting rod assembly 13 extending into the annular groove 1211 can perform regular reciprocating linear motion in the annular groove 1211, so that the vibration of the transmission mechanism 1 is reduced, the massage assembly 2 can be regularly stretched, and the use comfort of a user is improved.

Referring to fig. 6 and 7, when the annular groove 1211 is shaped as an oblong circle, the annular groove 1211 has a major axis (i.e., an x-axis of the cam body 121 in fig. 6 and 7) and a minor axis (i.e., a y-axis of the cam body 121 in fig. 6 and 7) perpendicular to each other, the major axis passes through a rotation center of the cam body 121, and the direction of the major axis is a direction of a longest line segment connecting two points on the oblong circle.

In the embodiment of the present application, when the long axis of the annular groove 1211 passes through the center of the cam body 121, the connecting rod assembly 13 moves regularly along with the transmission member 122, and there is no circular swing motion, so as to further reduce the vibration degree of the fascial gun during operation. Wherein when the end of the connecting rod assembly 13 extending into the annular groove 1211 is on the long axis in the annular groove 1211 and is close to the end of the rotating shaft 111 (i.e., the position shown in fig. 6), the connecting rod assembly 13 is farthest away from the massage assembly 2, and when the cam body rotates 180 °, the end of the connecting rod assembly 13 extending into the annular groove 1211 is on the long axis in the annular groove 1211 and is far away from the end of the rotating shaft 111 (i.e., the position shown in fig. 7), the connecting rod assembly 13 is closest to the massage assembly 2. The connecting rod assembly 13 makes reciprocating linear motion in the closest and farthest distance ranges.

It should be noted that the connecting rod assembly 13 is limited by the restraining member 14 to move only in the x-axis direction, one end of the connecting rod assembly 13 extending into the annular groove 1211 is also limited, when the user starts the fascial gun, the driving device 11 drives the cam body 121 to rotate, one end of the connecting rod assembly 13 extending into the annular groove 1211 slides relative to the side wall of the annular groove 1211, and the connecting rod assembly 13 moves only in the x-axis direction along with the rotation of the annular groove 1211.

It should be noted that the oblong shape is a shape similar to a playground runway, that is: the oblong shape has two opposite arc-shaped sides and also has two opposite parallel line segments, wherein the two arc-shaped sides are connected by the line segments. In addition, although the present embodiment may use the annular groove 1211 having various shapes, when the long axis of the oblong shape, the long axis of the oval shape, and the diameter of the circle are the same, the circumference of the oblong shape is smaller, that is, when one end of the connecting rod assembly 13 extends into the annular groove 1211 and performs a relative motion, the time taken for the connecting rod assembly to perform a reciprocating motion is the shortest, that is, the transmission efficiency is the highest. Therefore, the oblong annular groove 1211 is preferably used in the embodiment of the present application.

In order to improve the transmission efficiency of cam assembly 12 to connecting rod assembly 13, cam assembly 12 further includes a connecting member 122, one end of connecting rod assembly 13 is connected in annular groove 1211 through connecting member 122, and connecting member 122 forms a rolling fit with annular groove 1211.

In some embodiments, the connecting member 122 is a cylindrical rod, and the connecting rod assembly 13 has a through hole at one end, and one end of the cylindrical rod is inserted into the through hole and the other end of the cylindrical rod extends into the annular groove 1211, so that when the annular groove 1211 rotates, the cylindrical rod can rotate along with the annular groove 1211 and can rotate, so that the cylindrical rod and the annular groove 1211 form a rolling fit, thereby improving the transmission efficiency of the cam assembly 12 to the connecting rod assembly 13.

In other embodiments, the connecting member 122 further includes a bearing 123, an inner ring of the bearing 123 is fixed at one end of the connecting member 122 extending into the annular groove 1211, the bearing 123 extends into the annular groove 1211, when the annular groove 1211 rotates, the bearing 123 moves along with the rotation of the annular groove 1211, and the bearing 123 rotates, so that the bearing 123 rolls in the annular groove 1211, thereby reducing the friction between the connecting rod assembly 13 and the cam assembly 12 and improving the transmission efficiency of the cam assembly 12 to the connecting rod assembly 13. It should be noted that the bearing 123 may be made of a soft material, such as rubber, babbitt metal, or other soft materials. Since the soft material has a certain resilience, that is, the soft material is contracted and restored when contacting with other objects, when the bearing 123 is made of the soft material, the outer contour of the bearing 123 can be elastically contacted with the inner contour of the annular groove 1211, so that noise and vibration can be reduced.

Further, a buffer (not shown) is disposed between the connecting member 122 and the annular groove 1211, for example, a lubricant or powder is coated on an end of the connecting member 122 extending into the annular groove 1211, or a lubricant or powder is coated in the annular sliding groove 1211, so as to further reduce friction, improve transmission efficiency, reduce heat generation and wear, and reduce noise.

Referring to fig. 8 and 9, the driving device 11 is provided with a rotating shaft 111, a first through hole 1213 is disposed at the center of the cam body 121 and is connected to the rotating shaft 111, and the rotating shaft 111 extends into the first through hole 1213 to form a non-rotation fit. In the embodiment of the present application, the rotating shaft 111 of the driving device 11 is inserted into and fixed to the first through hole 1213 at the center of the cam body 121, so that the driving device 11 and the cam body 121 can be driven more stably, wherein the driving device 11 is used as a power source of the transmission mechanism 1, when the driving device 11 starts to work, the rotating shaft 111 rotates and drives the cam body 121 to rotate accordingly, and further drives the eccentrically disposed annular groove 1211 to rotate.

It should be noted that the first through hole 1213 is non-rotatably engaged with the rotating shaft 111, that is, the rotating shaft 111 is fixed in the first through hole 1213, and the rotating shaft 111 and the first through hole 1213 do not move relatively.

Referring to fig. 4 and 9, the cam module 12 further includes a cam connection screw 124 and a washer 125, the shaft 111 has a threaded hole 1111 coupled to the cam connection screw 124, the washer 125 is locked to the cam module 12 by the cam connection screw 124, and an outer diameter of the washer 125 is larger than an inner diameter of the first through hole 1213.

In the embodiment of the present application, since the rotating shaft 111 is provided with the threaded hole 1111, the washer 125 is firmly locked on the cam module 12 by the cam connection screw 124, and since the outer diameter of the washer 125 is larger than the inner diameter of the first through hole 1213, the washer 124 will abut against the second surface 121b of the cam body 121, and the rotating shaft 111 is prevented from being disengaged from the first through hole 1213, so that the cam connection screw 124 and the washer 125 can firmly fix the rotating shaft 111 and the cam body 121 together, and the stable transmission between the driving device 11 and the cam body 121 is ensured without vibration. The gasket 125 may be an elastic gasket or a common gasket, and the application is not limited in this respect.

In the embodiment of the present invention, only the cam fastening screw 124 may be provided, and the washer 125 may not be provided, and the cam fastening screw 124 may be inserted into the screw hole 1111 to be fixed. The washer 124 prevents the cam body 121 from being loosened, so that the connection between the cam body and the driving unit 11 is firm and does not become loose during rotation. In addition, as another optional embodiment, in the embodiment of the present application, a limiting member may be disposed on the rotating shaft 111 and the cam body 121, the limiting member is disposed at one end of the rotating shaft 111 far away from the driving device 11, the limiting member passes through the rotating shaft 111 along an axial direction perpendicular to the rotating shaft 111, a limiting groove sinking toward the first surface 121a is disposed on the second surface 121b of the cam body 121, and the limiting member is mounted in the limiting groove. Thus, when the rotating shaft 111 extends into the second through hole 1111, the limiting member penetrates through the rotating shaft 111 and is embedded into the limiting groove formed on the second surface 121b, and the rotating shaft can be limited in the cam body 121, so that the rotating shaft and the cam body 121 are firmly connected.

In order to prevent the driving device 11 from interfering with the cam body 121, referring to fig. 9, in some embodiments, the circumferential surface of the rotating shaft 111 extends radially outward to form a limiting portion 1112, the limiting portion 1112 is spaced apart from the body of the driving device 11, and the first surface 121a of the cam module 12 abuts against the limiting portion 1112 to be spaced apart from the body of the driving device 11; in other embodiments, the shaft 111 includes a first section connected to and extending out of the body of the drive device 11 and a second section connected to the first section and extending into the first through hole 1213, the stepped surfaces formed by the first and second sections abutting against the first surface 121a to space the cam assembly 12 from the body of the drive device 11.

Further, referring to fig. 10, the connecting rod assembly 13 includes: a piston 131 and a connecting rod 132. Wherein, the piston 131 is connected with the massage assembly 2, the connecting rod 132 is respectively connected with the piston 131 and the cam assembly 12, the connecting rod 132 is non-rotatably connected with the piston 131, or the connecting rod 132 is integrally formed with the piston 131, and the constraining member 14 is used for constraining at least one of the piston 131 and the connecting rod 132.

In this embodiment, one end of the connecting rod assembly 13 is connected to the cam assembly 12, and the other end is connected to the massage assembly 2, specifically, one end of the connecting rod 132 is connected to the cam assembly 12, and the end moves under the driving of the cam assembly 12, and drives the connecting rod 132 to move integrally, while the other end of the connecting rod 132 is connected to the piston 131, and the piston 131 is connected to the massage assembly 2, and the piston 131 drives the massage assembly 2 to move under the driving of the connecting rod 132. In addition, since the connecting rod 132 is non-rotatably connected to the piston 131, that is, the connecting rod 132 is fixedly connected to the piston 131, when the connecting rod 132 performs telescopic motion in a linear direction, the piston 131 also performs telescopic motion in the same linear direction. It should be noted that the constraining member 14 is used for constraining at least one of the piston 131 and the connecting rod 132, and since the piston 131 is fixedly connected to the connecting rod 132, the constraining member 14 may constrain one of the piston 131 and the connecting rod 132, and of course, may constrain both the piston 131 and the connecting rod 132.

In addition, as shown in fig. 3, the constraining member 14 is a bushing, the piston 131 extends into the bushing and slides in a linear telescopic manner, the constraining member 14 is fixedly connected with the body of the fascial gun, and the cross section of the bushing is circular, so that the piston 131 can be constrained from the periphery, and therefore the bushing can be used to enable the piston 131 to stably move along the axial direction of the bushing, so as to drive the massage assembly 2 to stably move along the axial direction of the bushing; of course, the constraining member 14 may also be a linear slideway (not shown), specifically, the constraining member 14 includes two oppositely disposed baffles, the two baffles are connected to the body and form the linear slideway, the first connecting rod 132 is clamped between the two baffles to be constrained, and the first connecting rod 132 can slide in the linear slideway.

Referring to fig. 10, the connecting rod assembly 13 further includes a connecting rod fixing bolt 133, a second through hole 1311 is disposed at one end of the piston 131 close to the connecting rod 132, a third through hole 1321 is disposed at one end of the connecting rod 132 close to the piston 131, and the connecting rod fixing bolt 133 passes through the second through hole 1311 and the third through hole 1321 to fixedly connect the first connecting rod 132 and the piston 131.

In this embodiment, the piston 131 is provided with the second through hole 1311, the first connecting rod 132 is provided with the third through hole 1321, the first connecting rod 132 and the piston 131 can be fixedly connected by passing the connecting rod fixing bolt 133 through the second through hole 1311 and the third through hole 1321, and the first connecting rod 132 and the piston 131 are firmly connected due to the bolt fixing structure, so that the connecting rod assembly 13 and the massage assembly 2 are more firmly connected, and the transmission is more stable.

Wherein, the shape of the first connecting rod 132 can be a zigzag shape, a straight shape, etc., the embodiment of the present application is preferably a zigzag shape, the first connecting rod 132 is approximately a zigzag structure, since the transmission mechanism 1 occupies most of the middle position of the fascial gun, in order to position the massage assembly 2 between the upper shell 4 and the handle 5, i.e. the middle of the left side of the upper shell 4 and the handle 5 in fig. 2, the left side part of the first connecting rod 131 needs to be lower than the right side part, and such zigzag structure can make the massage assembly 2 better assembled with the upper shell 4 and the handle 5.

To further improve the transmission efficiency of the cam assembly 12 to the connecting rod 132, a fourth through hole 1322 is formed at an end of the connecting rod 132 close to the cam assembly 12, and an end of the connecting member 122 extends into the fourth through hole 1322 to rotatably connect the connecting member 122 and the connecting rod 132.

Wherein the connecting member 122 and the connecting rod 132 are rotatably connected, such as sliding connection, rolling connection, etc. When the connecting member 122 is slidably connected to the connecting rod 132, specifically, one end of the connecting member 122 may be assembled with the fourth through hole 1322 by clearance fit, and the connecting member 122 may slide relative to the fourth through hole 1322; referring to fig. 3 and 11, when the connecting member 122 is in rolling connection with the connecting rod 132, specifically, a bearing 123 is disposed at one end of the connecting member 122 close to the fourth through hole 1322, one end of the connecting member 122 close to the fourth through hole 1322 is fixedly connected to an inner ring of the bearing 123, and an outer ring of the bearing 123 is fixedly connected to an inner wall of the fourth through hole 1322. The present application does not limit the specific rotational connection manner between the connecting member 122 and the connecting rod 132, as long as the friction between the connecting rod 132 and the connecting member 122 can be reduced, the transmission efficiency can be improved, and the noise and vibration can be reduced.

In addition, a buffer may be disposed at the connection position between the connection member 122 and the fourth through hole 1322, for example, lubricating oil or lubricating powder is coated on the end of the connection member 122 connected to the fourth through hole 1322, or lubricating oil or lubricating powder is coated on the inner wall of the fourth through hole 1322, so as to further reduce the friction force between the connection rod 132 and the connection member 122.

In summary, when the user uses the fascial gun, the driving device 11 is first started to rotate the rotating shaft 111, so that the cam body 121 fixedly connected with the rotating shaft 111 rotates, the cam body 121 is provided with the eccentric annular groove 1211, one end of the connecting member 122 extends into the annular groove 1211, at this time, the connecting member 122 displaces along with the annular groove 1211, the connecting rod 132 connected with the connecting member 122 also displaces, and further the piston 131 is driven to also displace, and meanwhile, because the piston 131 is fixedly connected with the massage assembly 2 and the piston 131 is limited by the restraining member 14 to only perform the telescopic motion along the linear direction, the piston 131 drives the massage assembly 2 to also perform the linear motion, that is, the connecting rod assembly 13 only performs the reciprocating linear motion in the fascial gun, the overall vibration is small, and the user experience is good.

The driving mechanism of the fascia gun and the fascia gun disclosed by the embodiment of the utility model are described in detail, the principle and the embodiment of the utility model are explained by applying specific examples, and the description of the embodiment is only used for helping to understand the utility model and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (17)

1. A drive mechanism of fascia rifle, the fascia rifle is equipped with massage subassembly, drive mechanism is used for driving the massage subassembly motion, its characterized in that, drive mechanism includes:

a drive device;

the cam assembly is in transmission connection with the driving device, and the driving device is used for providing power for the cam assembly;

one end of the connecting rod component is in transmission connection with the cam component, and the other end of the connecting rod component is connected with the massage component;

and the constraint piece is driven by the cam assembly and constrained by the constraint piece, and the connecting rod assembly is only suitable for telescopic motion along a linear direction, so that the massage assembly and the connecting rod assembly synchronously telescopic motion along the linear direction.

2. The transmission mechanism as claimed in claim 1, wherein the cam assembly has first and second opposed faces, the drive means being mounted on the first face, the one end of the connecting rod assembly being connected to the second face.

3. The transmission mechanism as recited in claim 1, wherein the cam assembly comprises:

the cam body, the cam body with drive arrangement transmission is connected, a side of cam body is equipped with the annular groove, the center of annular groove for the rotatory center of cam body is to first direction eccentric settings, the connecting rod subassembly one end stretch into in the annular groove, and when the cam body rotated, the connecting rod subassembly one end was in slide in the annular groove.

4. The transmission mechanism as claimed in claim 3, wherein the corners of the annular groove are rounded corners.

5. The transmission mechanism as claimed in claim 3, wherein the cam body is further provided with a weight for making a center of rotation of the cam body coincide with a center of the cam body.

6. The transmission mechanism according to claim 5, wherein the weight portion is a boss eccentrically disposed in a first direction with respect to a rotational center of the cam body; alternatively, the first and second electrodes may be,

the weight portion is a groove eccentrically arranged in a second direction opposite to the first direction relative to the rotation center of the cam body.

7. The transmission mechanism according to claim 3, wherein the annular groove has an oblong shape, the annular groove has a major axis and a minor axis perpendicular to each other, the major axis passes through a rotation center of the cam body, and a direction of the major axis is a direction of a longest line segment obtainable by connecting two points on the oblong shape.

8. The transmission mechanism as recited in claim 3, wherein the cam assembly further comprises:

the connecting piece, the one end of connecting rod subassembly passes through the connecting piece is connected in the annular groove, just the connecting piece with the annular groove forms the roll fit.

9. The transmission mechanism as recited in claim 3, wherein the cam assembly further comprises:

the connecting piece, the connecting rod subassembly the one end is passed through the connecting piece is connected in the annular groove, the connecting piece with still be equipped with the bolster between the annular groove.

10. The transmission mechanism according to any one of claims 1 to 9, wherein a rotating shaft is provided on the driving device, a first through hole is provided at the center of the cam body, the first through hole is connected with the rotating shaft in a matching manner, and the rotating shaft extends into the first through hole and forms a non-rotation fit.

11. The transmission mechanism as claimed in claim 10, wherein the cam module further comprises a cam connection screw and a washer, the shaft is provided with a threaded hole for engaging with the cam connection screw, the washer is locked to the cam module by the cam connection screw, and the outer diameter of the washer is larger than the inner diameter of the first through hole.

12. The transmission mechanism as claimed in claim 10, wherein the peripheral surface of the shaft extends radially outwardly to form a limit portion, the limit portion being spaced from the body of the drive assembly, the cam assembly abutting against the limit portion to be spaced from the body of the drive assembly; or

The rotating shaft comprises a first section and a second section, the first section is connected with the body of the driving device and extends out of the body of the driving device, the second section is connected with the first section, the second section is suitable for extending into the first through hole, and a step surface formed by the first section and the second section is abutted to the cam assembly so that the cam assembly is spaced from the body of the driving device.

13. The transmission mechanism as claimed in any one of claims 1 to 9, wherein the connecting rod assembly comprises:

the piston is connected with the massage head assembly;

a connecting rod connected to the piston and the cam assembly respectively,

the connecting rod and the piston form non-rotary connection, or the connecting rod and the piston are integrally formed;

the restraint is for restraining at least one of the piston and the connecting rod.

14. The transmission mechanism according to claim 13, wherein the restraining member is a bushing, the piston is adapted to extend into the bushing and slide in a linear telescopic manner, and the restraining member is fixedly connected to the body of the fascial gun.

15. The transmission mechanism according to claim 13, wherein the constraining member comprises two opposing baffles, the two baffles are connected to the main body of the fascial gun and form a linear slideway, the connecting rod is clamped between the two baffles to be constrained, and the connecting rod can slide in the linear slideway.

16. The transmission mechanism as recited in claim 13, wherein the connecting rod is rotatably connected to the cam assembly.

17. Fascia gun, characterized in that it comprises a transmission mechanism according to any of claims 1 to 16.

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