Vibration transfer device and massager

Abstract

The invention relates to the technical field of power transmission structures, in particular to a vibration rotating device and a massager. The vibration turning device comprises an operation part, a direction changing part and a rotation driving part; the rotation driving part is connected with the operation part through a direction changing part, and the operation part can swing in a reciprocating mode at a set angle. One-way rotation is output through the rotation driving part, and reciprocating swing at a set angle is output through cooperation of the direction changing part, so that reciprocating swing of the operation part according to the set angle is achieved, the use requirement of a user for a specific scene is met, and the robot is simple in structure, good in movement stability and high in adaptability.

Description

Technical Field

[0001] This invention relates to the field of power transmission structure technology, and more specifically, to a vibration device and a massager. Background Technology

[0002] In civilian and personal use scenarios such as personal care, daily function adjustment, and localized auxiliary effects, many devices need to achieve core functions through the reciprocating oscillation of actuators, such as localized relief, precise application, and function adjustment. Currently, products that implement reciprocating oscillation functions in these scenarios still have many technical limitations, making it difficult to meet users' needs for device structural simplicity, motion stability, and adaptability.

[0003] Existing related products use relatively simple transmission methods, mostly only capable of linear reciprocating transmission or 360° rotational transmission in the same direction. They cannot achieve efficient high-frequency left-right reciprocating oscillation through a single power output structure. Some products employ complex multi-motor drive combinations or precision servo motors combined with complex electronic control systems to achieve reciprocating oscillation. This not only increases product size and manufacturing costs but also results in significant power loss and high maintenance difficulty, making them unsuitable for the design requirements of handheld and portable products. Summary of the Invention

[0004] The purpose of this invention is to provide a vibration device and a massager that can solve the above-mentioned technical problems.

[0005] In a first aspect, the present invention provides a vibration rotating device, comprising a working part, a direction changing part, and a rotation driving part; The rotation drive unit is connected to the working unit via the direction-changing unit, enabling the working unit to reciprocate at a set angle.

[0006] In an optional embodiment, the reversing part and the working part are connected by a flexible connector; Alternatively, the reversing part and the working part are connected by a rigid connecting rod.

[0007] In an optional embodiment, the flexible connector has connector heads at both ends.

[0008] The reversing unit includes a housing, an input shaft, an output shaft, and a transmission mechanism; The transmission mechanism is disposed within the outer casing; One end of the input shaft is connected to the rotation drive unit, and the other end of the input shaft is connected to the input end of the transmission mechanism; One end of the output shaft is connected to the working part, and the other end of the output shaft is connected to the output end of the transmission mechanism; The transmission mechanism can convert the unidirectional rotating input shaft into the output shaft that reciprocates at a set angle.

[0009] In an optional embodiment, the transmission mechanism is a crank-rocker mechanism or a swing cam mechanism.

[0010] In an optional embodiment, the transmission mechanism includes a driving wheel, a transmission rod, a driven member, and a transmission gear; The inner cavity of the outer shell has a main sliding groove, and the driven member is slidably disposed in the main sliding groove; One end of the driven member has a transmission rack, and the other end of the driven member has a connecting groove, the length direction of the connecting groove being perpendicular to the length direction of the main sliding groove; One end of the output shaft is coaxially connected to the transmission gear, and the transmission gear meshes with the transmission rack; One end of the input shaft is connected to the drive wheel, which can drive the drive wheel to rotate; One end of the transmission rod is fixedly mounted on the drive wheel and can rotate around the axis of the drive wheel. The other end of the transmission rod is inserted into the connecting groove and can drive the driven member to reciprocate within the main sliding groove.

[0011] In an optional embodiment, the vibration rotating device further includes a vibration driving unit; The vibration drive unit is connected to the working unit and can cause the working unit to vibrate.

[0012] In an optional embodiment, the vibration drive unit includes a vibration power device and an eccentric block; The vibration power device is fixedly connected to the working part, and the eccentric block is disposed at the rotation output end of the vibration drive part.

[0013] In an optional embodiment, the reversing unit is an electronic controller, which controls the forward and reverse rotation of the rotation drive unit to realize the oscillation of the working unit.

[0014] In a second aspect, the present invention provides a massager, comprising a main housing, a massage head, and a vibration device as described in any of the foregoing embodiments; The direction-changing part and the rotation drive part of the vibration-spinning device are both disposed inside the main housing; The working part and the vibration driving part are disposed inside the massage head, or the working part is the massage head.

[0015] The beneficial effects of this invention are: The rotating drive outputs unidirectional rotation, which, with the cooperation of the direction-changing unit, outputs a reciprocating oscillation at a set angle, thereby enabling the working unit to reciprocate at a set angle, meeting the user's needs for specific scenarios. It has a simple structure, good motion stability, and strong adaptability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the vibration-damping device provided in an embodiment of the present invention; Figure 2 A two-way sectional view of the transmission mechanism of the vibration-damping device provided in an embodiment of the present invention; Figure 3 A three-dimensional structural diagram of the drive wheel of the transmission mechanism of the vibration-damping device provided in an embodiment of the present invention; Figure 4 A three-dimensional structural diagram of the driven component of the vibration-damping device provided in an embodiment of the present invention; Figure 5 A three-dimensional structural schematic diagram of the driven component of the vibration-damping device provided in an embodiment of the present invention from another perspective; Figure 6 A bottom view of the driven component of the vibration-damping device provided in an embodiment of the present invention; Figure 7 This is a top view of the driven component of the vibration-damping device provided in an embodiment of the present invention.

[0018] Icons: 1- Rotation drive unit; 2- Directional change unit; 3- Flexible connector; 4- Connector; 5- Vibration power unit; 6- Eccentric block; 7- Working unit; 8- Bearing; 9- Battery; 10- Control circuit; 11- Charging connector; 12- Housing; 13- Drive wheel; 14- Transmission rod; 15- Driven component; 16- Output shaft; 17- Transmission rack; 18- Transmission groove. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] The following is combined Figures 1-7 The following describes some embodiments of the present invention in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0026] In a first aspect, the present invention provides a oscillating device, including a working part 7, a reversing part 2 and a rotation drive part 1; the rotation drive part 1 is connected to the working part 7 through the reversing part 2, and can enable the working part 7 to perform reciprocating oscillation at a set angle.

[0027] In this embodiment, after the rotation drive unit 1 is connected to the working unit 7 through the direction change unit 2, it can drive the working unit 7 to perform reciprocating swing at a specific angle.

[0028] In this embodiment, by precisely controlling the duration or number of rotations of forward and reverse rotations, the angle and frequency of the swing can be precisely set.

[0029] In an optional embodiment, the reversing part 2 and the working part 7 are connected by a flexible connector 3; or, the reversing part 2 and the working part 7 are connected by a rigid connecting rod.

[0030] In this embodiment, one end of the flexible connector 3 is mechanically connected to the motion output end of the deflector 2, and the other end is mechanically connected to the working part 7. The flexible connector 3 itself has great bending flexibility, allowing it to withstand and adapt to a certain degree of bending deformation without being damaged or failing. At the same time, it needs to have sufficient stiffness and toughness in the torsional direction to effectively transmit the rotational or oscillating torque output by the deflector 2.

[0031] Specifically, in this embodiment, the flexible connector 3 enables torque transmission and motion connection along non-linear paths. In the slewing device, there may be spatial misalignment or curved paths between the reversing section 2 and the working section 7. A conventional rigid shaft cannot be installed in this situation or would introduce excessive stress. The flexible connector 3 adapts to this spatial constraint through its own bending deformation, thereby reliably transmitting the oscillating motion output from the reversing section 2 to the working section 7, driving its operation. Another potential function is to buffer and absorb some of the impact and vibration during the transmission process, making the motion transmission smoother.

[0032] Specifically, in this embodiment, the flexible connector 3 can be a steel-cored aluminum stranded wire, steel wire rope, aluminum wire rope, PA6 material shaft, PA66 material shaft, silicone material shaft, rubber material shaft, or hardware spring shaft, etc. In this way, when the deflection unit 2 drives one end of the connecting rod to swing, the torque is transmitted along the axial direction of the connecting rod. Even if there is a bend in the middle section of the rod, the angular displacement of its two ends remains synchronous or in a fixed proportion, thereby transmitting the swing motion "around" the obstacle to the working unit 7.

[0033] In this embodiment, the reversing part 2 and the working part 7 can also be connected by a rigid connecting rod, thereby increasing the transmission length.

[0034] In an optional embodiment, the flexible connector 3 has connector heads 4 at both ends.

[0035] In this embodiment, the connector 4 is a rigid component fixed to both ends of the flexible connector 3. The structure of the connector 4 differs from that of the flexible rod body. It is typically made of metal or high-strength engineering plastic, and its shape is designed to facilitate reliable and quick connection with external components, such as a cuboid, cube, or shape with a driving plane, which matches the shape of the corresponding connecting hole on the working part or the deflecting part, thereby realizing the rotational transmission of force.

[0036] In this embodiment, the connector 4 acts as a rigid transition member, transmitting the torque and motion from the flexible connector body to the mating parts with little or no loss through its mechanical structural features.

[0037] In this embodiment, the two connectors 4 at both ends of the flexible connector 3 may have different shapes. The connector 4 connecting to the working part 7 is a cuboid or cube, which can be embedded in the working part 7 to facilitate the flexible connector 3 driving the working part 7 to reciprocate; the connector 4 connecting to the deflection part 2 can be cylindrical to reduce the space it occupies during rotation.

[0038] Specifically, in this embodiment, the end of the connector 4 has a transmission hole and the side has a locking hole. After the side wall of one end of the flexible connector 3 is flattened, it is inserted into the transmission hole, and then a plug is screwed into the locking hole. The inside of the plug abuts against the flat surface of the flexible connector 3, thereby realizing the fixed connection between the connector 4 and the flexible connector 3.

[0039] In an optional embodiment, a control circuit 10 is also included; the control circuit 10 has a vibration button and a rotation button; the vibration button is connected to the vibration drive unit, and the rotation button is connected to the rotation drive unit 1.

[0040] In this embodiment, the control circuit 10 is an electronic functional module, typically a printed circuit board. The board integrates a power management unit, a signal processing unit, and a drive execution unit. The vibration button and the rotation button are human-machine input devices located on the device housing and electrically connected to the control circuit 10 board; they can be physical buttons, touch-sensitive keys, or capacitive sliders. Internally, the signal output terminals of these two buttons are respectively connected to the power switch or control logic input terminals of the control circuit 10 responsible for driving the vibration drive unit and the rotation drive unit 1.

[0041] The control circuit 10 can receive user commands, distribute power, and drive the actuators. The vibration button is specifically designed to trigger and control the vibration mode. Pressing, holding down, or toggling this button sends an electrical signal to the control circuit 10 to turn the vibration intensity mode on, off, or switch between modes. The rotary button is specifically designed to trigger and control the oscillation mode. The two buttons function independently, allowing the user to perform four basic operations: oscillation only, vibration only, oscillation and vibration simultaneously, and both off. The control circuit 10 also manages the charging and discharging of the lithium battery 9, providing a stable voltage for the entire system.

[0042] When the user presses the rotation button, the two contacts of the button close or the sensor state changes, generating a low-level or high-level trigger signal. This signal is sent to the microcontroller or dedicated logic chip of the control circuit 10. After the processor recognizes the signal, it outputs a control signal from the corresponding output pin. This signal is amplified by the motor driver chip and drives the motor of the rotation drive unit 1 to start working according to preset parameters. Releasing the button or pressing it again may trigger a stop or mode switch. The control process for the vibration button is similar. The control circuit 10 may include a PWM pulse width modulation function, which steplessly adjusts the motor speed by changing the duty cycle of the drive signal, thereby controlling the oscillation frequency or vibration intensity. The two control channels are independent in circuitry, but can be interlocked or linked in program logic.

[0043] In an optional embodiment, the reversing unit 2 includes a housing 12, an input shaft, an output shaft 16, and a transmission mechanism; the transmission mechanism is disposed inside the housing 12; one end of the input shaft is connected to the rotation drive unit 1, and the other end of the input shaft is connected to the input end of the transmission mechanism; one end of the output shaft 16 is connected to the working unit 7, and the other end of the output shaft 16 is connected to the output end of the transmission mechanism; the transmission mechanism can convert the unidirectional rotating input shaft into an output shaft 16 that reciprocates at a set angle.

[0044] In this embodiment, the outer casing 12 serves as a closed or semi-closed cavity, providing support, positioning, and protection for the internal mechanisms. The input shaft and output shaft 16, acting as the power input and output rotating shafts respectively, are mounted on the outer casing 12 via bearings and other supporting components to ensure smooth rotation. The transmission mechanism is a core functional component encapsulated within the outer casing 12; its input end is linked to the input shaft, and its output end is linked to the output shaft 16, forming a complete power transmission and conversion chain.

[0045] Specifically, in this embodiment, the reversing unit 2 is used to implement the mechanism and modularization of motion form conversion. The input shaft can receive unidirectional, continuous rotational power from the rotation drive unit 1. The transmission mechanism is a motion converter, which contains specific geometric constraints or kinematic pairs, forcing the movement of the output shaft 16 to be restricted to reciprocating rotation within a specific angular range around its axis, such as... Figure 2The direction of rotation is indicated by the middle arrow, not continuous rotation. The outer casing 12 integrates and protects all internal parts, ensures the accuracy of the relative positions of each component, and connects the reversing unit 2 as a whole module to other components.

[0046] In this embodiment, when the rotation drive unit 1 drives the input shaft to rotate continuously, the input shaft drives the driving member of the transmission mechanism to move. The movement of this driving member is forcibly converted into a non-circular periodic movement of the driven member 15 through specific geometric relationships and kinematic pairs designed within the transmission mechanism. For example, the driving member performs circular motion, but the driven member 15 can only oscillate back and forth within a certain sector area. This oscillating driven member 15 directly drives the output shaft 16, thereby converting the unidirectional rotation of the input shaft into a reciprocating rotation of the output shaft 16 at a set angle. The magnitude of the set angle is determined by key dimensions within the transmission mechanism, such as crank length, slider stroke, or cam profile.

[0047] In an optional implementation, the transmission mechanism is a crank-rocker mechanism or a swing cam mechanism.

[0048] In this embodiment, when the transmission mechanism is a crank-rocker mechanism, it typically consists of three moving components—a crank, a connecting rod, and a rocker—and a frame. The crank is fixedly connected to the input shaft and rotates a full revolution as the driving element. The connecting rod is hinged at both ends to the crank and the rocker, respectively. The rocker, acting as the driven element 15, has one end hinged to the connecting rod and the other end fixedly connected to the output shaft 16. The output shaft 16 is rotatably connected to the housing 12, thus restricting the rocker's movement to an angle less than 360°. The function of the crank-rocker mechanism is to convert the continuous rotational motion of the driving element, the crank, into the reciprocating oscillation of the driven element 15, the rocker, through the transmission of the connecting rod and geometric constraints.

[0049] In this embodiment, when the transmission mechanism is a swing cam mechanism, it includes a cam fixedly connected to the input shaft and a swing follower 15. The cam profile is designed according to the required motion law. One end of the swing follower 15 is kept in contact with the cam profile by a roller, and the other end is fixedly connected to the output shaft 16 and kept in contact with the cam under the action of a spring or gravity.

[0050] The function of the oscillating cam mechanism is to use the specific profile shape of the cam to directly convert the rotational motion of the input shaft into the motion of the oscillating follower 15 according to a predetermined law. The profile curve determines the oscillation angle, speed and acceleration changes.

[0051] The principle of the oscillating cam mechanism is based on the forced motion of the higher pair contact. When the cam rotates, its profile pushes the roller of the follower 15, forcing the follower 15 to oscillate around its fulcrum. The part of the cam profile with the largest radial change corresponds to the maximum oscillation angle of the follower 15. By carefully designing the profile curve, various oscillation laws such as constant velocity oscillation and simple harmonic motion can be achieved.

[0052] In an optional embodiment, the transmission mechanism includes a driving wheel 13, a transmission rod 14, a driven member 15, and a transmission gear; the inner cavity of the outer casing 12 has a main sliding groove, and the driven member 15 is slidably disposed in the main sliding groove; one end of the driven member 15 has a transmission rack 17, and the other end of the driven member 15 has a connecting groove, the length direction of the connecting groove being perpendicular to the length direction of the main sliding groove; one end of the output shaft is coaxially connected to the transmission gear, and the transmission gear meshes with the transmission rack 17; one end of the input shaft is connected to the driving wheel 13, and can drive the driving wheel 13 to rotate; one end of the transmission rod 14 is fixedly disposed on the driving wheel 13, and can rotate around the axis of the driving wheel 13, and the other end of the transmission rod 14 is inserted into the connecting groove, and can drive the driven member 15 to reciprocate within the main sliding groove.

[0053] In this embodiment, the drive wheel 13 is rotatably disposed inside the outer casing 12. The drive wheel 13 has a strip-shaped hole at its axial center position, which cooperates with the corresponding flat rod at the end of the input shaft, which is equivalent to a key connection, so as to transmit the rotation of the input shaft to the drive wheel 13, enabling the drive wheel 13 to rotate around the axis of the input shaft.

[0054] In this embodiment, the input shaft and the transmission rod 14 are respectively displaced on opposite sides of the driving wheel 13. One end of the transmission rod 14 is fixed to the driving wheel 13, and the other end of the transmission rod 14 is inserted into the connecting groove of the driven member 15, and can slide in the connecting groove.

[0055] In this embodiment, with Figure 6 and Figure 7 The planar rectangular coordinate system is set up as shown, with the length direction of the connecting groove along the x-direction and the sliding direction of the follower 15 along the y-direction, that is, the length direction of the transmission rack 17 on the follower 15 is along the y-direction.

[0056] Specifically, in this embodiment, the driven member 15 cannot rotate due to the action of the outer casing 12. Under the force of the transmission rod 14, the driven member 15 can be reciprocated in the y-direction, while the transmission rod 14 moves in the x-direction within the connecting groove. When the driven member 15 reciprocates in the y-direction, the transmission rack 17 on its other side drives the transmission gear meshing with it to reciprocate. The reciprocating motion of the transmission gear is transmitted to the output shaft for output.

[0057] In a second aspect, the present invention provides a massager, comprising a main housing, a massage head, and a vibration device according to any of the foregoing embodiments; The direction-changing part 2 and the rotation drive part 1 of the vibration device are both located inside the main housing; the working part 7 and the vibration drive part are located inside the massage head, or the working part 7 is the massage head.

[0058] In this embodiment, the massager is divided into two main physical parts: the main housing and the massage head. The two may be connected as a single piece or connected through the neck or a bend.

[0059] The main housing serves as the handle and main unit compartment, and its internal space accommodates the larger, heavier, or integrated parts of the vibration device, namely the direction-changing unit 2 and the rotation drive unit 1. The massage head, as the working end that acts on the human body, encapsulates the working unit 7 and the vibration drive unit. The working unit 7 is here specifically embodied as a movable part of the massage head, such as a swingable massage contact point or module, or the working unit 7 can be the massage head itself.

[0060] In this embodiment, the flexible connector 3 and the main housing can be connected by a bearing 8, which reduces the friction between the flexible connector 3 and the main housing while ensuring the transmission effect of the flexible connector 3.

[0061] In this embodiment, a battery 9 is also integrated inside the main housing. The battery 9 can be a lithium battery 9, and a charging connector 11 is provided to charge the battery 9.

[0062] In an optional embodiment, the vibration device further includes a vibration drive unit; the vibration drive unit is connected to the working unit and can cause the working unit to vibrate.

[0063] In this embodiment, the vibration drive unit and the rotation drive unit 1 are set separately, and both sets of structures act on the working unit 7, so that each set of structures can be used alone, or the two structures can be used at the same time, thereby achieving the purpose of single function and compound function.

[0064] Specifically, in this embodiment, when the vibration drive unit is activated alone, the working unit outputs vibration; when the rotation drive unit is activated alone, the working unit outputs reciprocating oscillation; when both the vibration drive unit and the rotation drive unit are driven simultaneously, the working unit simultaneously performs vibration and reciprocating oscillation, i.e., outputs a composite action of vibration and oscillation. Through different control modes, three different control functions can be achieved.

[0065] When the working part 7 is a massage head and the overall structure is used as a massager, it can vibrate and rub the human body surface, bringing different massage experiences to the human body; when the working part 7 is a toothbrush head and the overall structure is used as an electric toothbrush, it can vibrate and swing at the same time, improving the efficiency of brushing teeth.

[0066] In this embodiment, the rotation drive unit 1 is a rotation motor that transmits rotation to the input end of the direction change unit 2 and outputs a set angle of oscillation from the direction change unit 2, thereby causing the working unit 7 to perform reciprocating oscillation at a set angle.

[0067] Specifically, in this embodiment, the vibration drive unit is disposed on the working unit 7. While the working unit 7 is reciprocating, the vibration drive unit reciprocates synchronously with the working unit 7. When the vibration drive unit is turned on, the working unit 7 can simultaneously vibrate and reciprocate.

[0068] In an optional embodiment, the vibration drive unit includes a vibration power device 5 and an eccentric block 6; the vibration power device 5 is fixedly connected to the working unit 7, and the eccentric block 6 is disposed at the rotation output end of the vibration drive unit.

[0069] In this embodiment, the vibration power device 5 of the vibration drive unit is typically a miniature DC motor, whose stator is securely mounted on the housing or internal frame of the working unit 7 by means of brackets, screws, or adhesive. The eccentric block 6 is a metal block with uneven mass, which is rigidly mounted on the rotor of the motor. This means that the output shaft 16 of the motor is the mounting shaft of the eccentric block 6, and the center of mass of the eccentric block 6 is not located on the rotation axis of this shaft.

[0070] The function of the vibration power unit 5 is to provide rotational mechanical energy, and the function of the eccentric block 6 is to convert uniform rotational motion into periodic centrifugal excitation force. Because the center of mass of the eccentric block 6 is offset from the center of rotation, when it rotates at high speed, it generates a centrifugal force vector with a constant magnitude but constantly changing direction. This centrifugal force is transmitted to the working part 7 through the motor bearing 8 and the motor housing, forcing the working part 7 to vibrate under forced conditions. Directly fixing the vibration power unit 5 to the working part 7 ensures that the excitation force acts on the target area most directly and effectively, reducing energy loss along the transmission path.

[0071] Its working principle is based on the centrifugal force effect generated by the imbalance of rotating mass. According to Newton's second law and the formula for circular motion, the centrifugal force generated by eccentric block 6 is proportional to the eccentric mass, the eccentricity, and the square of the rotational angular velocity. This centrifugal force rotates 360 degrees in a plane perpendicular to the axis of rotation. When this vibration drive unit is rigidly connected to an elastic system, the system will generate forced vibration under the action of this periodic excitation force. The vibration frequency is equal to the rotational frequency of the motor, and the vibration amplitude is related to the magnitude of the excitation force, the mass, stiffness, and damping characteristics of the working part 7 and its connecting structure. By changing the voltage of the motor, its rotational speed can be adjusted, thereby linearly changing the vibration frequency and indirectly affecting the vibration intensity.

[0072] Understandably, there are multiple alternatives to implementing the vibration drive unit. The form of the eccentric block 6 can be changed, such as using a semi-circular block, a screw counterweight, or an adjustable slider to adjust the vibration intensity. The vibration power unit 5 is not limited to a brushed motor; a brushless motor can be used to achieve longer life and more precise speed control.

[0073] Linear resonant actuators can also be used, which drive a mass block to reciprocate linearly in a magnetic circuit using alternating current, generating a directional vibration sensation; or piezoelectric ceramic actuators can be used, which utilize the inverse piezoelectric effect to generate micro-amplitude high-frequency vibrations, offering fast response and precise control. Alternatively, the eccentric block 6 can be replaced with an impact mechanism containing a pendulum to produce a pulsed hammering sensation instead of continuous vibration.

[0074] In other words, it is sufficient to achieve the function of causing the working part 7 to vibrate.

[0075] In an optional embodiment, the reversing unit is an electronic controller, which controls the forward and reverse rotation of the rotation drive unit 1 to realize the oscillation of the working unit 7.

[0076] In this embodiment, the reversing unit is specifically an electronic controller, typically a printed circuit board integrating a microprocessor, a motor driver chip, power devices, and related passive components. The rotation drive unit 1 is a motor capable of forward and reverse rotation, such as a brushed DC motor, a stepper motor, or a brushless motor that can be reversed via frequency conversion. The signal output terminal of the electronic controller is electrically connected to the control input terminal of the rotation drive unit 1.

[0077] Specifically, in this embodiment, the electronic controller, acting as a directional control unit, is capable of generating a specific control timing sequence based on execution logic. It receives the user's start command and, according to a preset program, periodically sends forward and reverse rotation drive signals to the rotation drive unit 1. Its function is no longer to mechanically change the form of motion, but rather to achieve the same output effect by directly commanding the power source to perform reciprocating motion.

[0078] When the device is started, the program in the electronic controller begins to run. First, it outputs a signal to drive the motor to rotate in one direction. This rotation is transmitted directly or indirectly to the working unit 7 via the drive shaft, causing it to swing in one direction. After a preset time or after the motor has rotated a specific angle, the controller changes the polarity or phase sequence of the output signal, commanding the motor to stop rotating in the forward direction and start rotating in the reverse direction, thereby driving the working unit 7 to swing in the opposite direction. This cycle repeats, and the working unit 7 achieves the swinging motion.

[0079] The beneficial effects of this invention are: The rotating drive outputs unidirectional rotation, which, with the cooperation of the direction-changing unit, outputs a reciprocating oscillation at a set angle, thereby enabling the working unit to reciprocate at a set angle, meeting the user's needs for specific scenarios. It has a simple structure, good motion stability, and strong adaptability.

[0080] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A vibration-damping device, characterized in that, It includes the working section, the reversing section, and the rotation drive section; The rotation drive unit is connected to the working unit via the direction-changing unit, enabling the working unit to reciprocate at a set angle.

2. The vibration-damping device according to claim 1, characterized in that, The reversing part and the working part are connected by a flexible connector; Alternatively, the reversing part and the working part are connected by a rigid connecting rod.

3. The vibration-damping device according to claim 2, characterized in that, The flexible connector has connector heads at both ends.

4. The vibration-damping device according to claim 1, characterized in that, The reversing unit includes a housing, an input shaft, an output shaft, and a transmission mechanism; The transmission mechanism is disposed within the outer casing; One end of the input shaft is connected to the rotation drive unit, and the other end of the input shaft is connected to the input end of the transmission mechanism; One end of the output shaft is connected to the working part, and the other end of the output shaft is connected to the output end of the transmission mechanism; The transmission mechanism can convert the unidirectional rotating input shaft into the output shaft that reciprocates at a set angle.

5. The vibration-damping device according to claim 4, characterized in that, The transmission mechanism is a crank-rocker mechanism or a swing cam mechanism.

6. The vibration-damping device according to claim 4, characterized in that, The transmission mechanism includes a driving wheel, a transmission rod, a driven component, and a transmission gear; The inner cavity of the outer shell has a main sliding groove, and the driven member is slidably disposed in the main sliding groove; One end of the driven member has a transmission rack, and the other end of the driven member has a connecting groove, the length direction of the connecting groove being perpendicular to the length direction of the main sliding groove; One end of the output shaft is coaxially connected to the transmission gear, and the transmission gear meshes with the transmission rack; One end of the input shaft is connected to the drive wheel, which can drive the drive wheel to rotate; One end of the transmission rod is fixedly mounted on the drive wheel and can rotate around the axis of the drive wheel. The other end of the transmission rod is inserted into the connecting groove and can drive the driven member to reciprocate within the main sliding groove.

7. The vibration-damping device according to claim 1, characterized in that, It also includes a vibration drive unit; The vibration drive unit is connected to the working unit and can cause the working unit to vibrate.

8. The vibration-damping device according to claim 7, characterized in that, The vibration drive unit includes a vibration power device and an eccentric block; The vibration power device is fixedly connected to the working part, and the eccentric block is disposed at the rotation output end of the vibration drive part.

9. The vibration-damping device according to claim 1, characterized in that, The reversing unit is an electronic controller, which is used to control the forward and reverse rotation of the rotation drive unit to realize the oscillation of the working unit.

10. A massager, characterized in that, Includes a main housing, a massage head, and a vibration device as described in any one of claims 1-9; The direction-changing part and the rotation drive part of the vibration-spinning device are both disposed inside the main housing; The working part is disposed inside the massage head, or the working part is the massage head.

Images