Handheld massager

Abstract

The application provides a handheld massage instrument, belonging to the field of personal care, which comprises a main body having a handheld part and a supporting part connected with each other; a massage roller rotatably installed on the supporting part, the massage roller having a hollow cavity inside; an eccentric block arranged in the hollow cavity, the center of mass of the eccentric block being offset from the rotation axis of the eccentric block; and a driving device arranged in the main body, the driving device having an output shaft, the output shaft being in transmission connection with the eccentric block, the driving device being capable of driving the eccentric block to rotate around the output shaft, and the eccentric block being capable of generating an impact force when rotating and transmitting the impact force to the massage roller. The handheld massage instrument of the application is helpful to improve the vibration massage efficiency and improve the massage effect.

Description

Technical Field

[0001] This application belongs to the field of massage therapy technology, and more specifically, relates to a handheld massager. Background Technology

[0002] With the fast pace of life and increasing work pressure, muscle fatigue and stiffness are becoming increasingly common. Rolling massagers, due to their ease of operation and wide massage range, have become a commonly used health care device in homes and offices.

[0003] However, most existing massagers achieve muscle vibration massage by adding vibration function to the main body. They usually set up an independent vibration source in the main body, and the vibration is transmitted to the muscles in sequence through the main body and the massage components. The vibration transmission efficiency is low and the massage effect is not good, which needs to be further improved. Summary of the Invention

[0004] This application provides a handheld massager that helps improve the efficiency of vibration massage and enhance the massage effect.

[0005] The technical solution adopted in this application embodiment is: to provide a handheld massager, including:

[0006] The main body has a hand-held part and a support part that are connected to each other;

[0007] A massage roller is rotatably mounted on the support, and the massage roller has a hollow inner cavity.

[0008] An eccentric block is disposed within the hollow inner cavity, and the center of mass of the eccentric block is offset from the rotation axis of the eccentric block; and

[0009] A driving device is disposed within the main body. The driving device has an output shaft, which is connected to the eccentric block in a transmission manner. The driving device can drive the eccentric block to rotate around the output shaft. When the eccentric block rotates, it can generate an impact force and transmit it to the massage roller.

[0010] Furthermore, the eccentric block includes a shaft connection portion and a counterweight portion disposed on the outer periphery of the shaft connection portion. The shaft connection portion is connected to the output shaft of the drive device, and the mass of the counterweight portion is non-uniformly distributed in the circumferential direction of the shaft connection portion.

[0011] Furthermore, the cross-section of the counterweight portion perpendicular to the axis of the shaft connection portion is fan-shaped.

[0012] Furthermore, the drive device is also connected to the massage roller in a transmission connection to drive the massage roller to rotate actively relative to the main body.

[0013] Furthermore, the driving device also includes a driving body, the output shaft passes through the driving body and is rotatable relative to the driving body, the output shaft has a first output end and a second output end exposed outside the driving body, the first output end is fixedly connected to the eccentric block, and the massage roller is sleeved on the outer periphery of the support portion and fixedly connected to the second output end;

[0014] The support portion has a receiving cavity for accommodating and fixing the driving body. The outer peripheral surface of the driving body has a fitting surface that fits in the circumferential direction with the inner wall surface of the receiving cavity, so as to transmit the impact force generated by the rotation of the eccentric block to the support portion through the fitting surface.

[0015] Furthermore, the main body includes a shell and a mounting frame;

[0016] The housing includes the handle portion and a hollow branch extending from the handle portion;

[0017] The fixing frame includes a first part and a second part that are connected to each other. The first part is fixed inside the hand-held part, and the second part extends outward from the hollow branch to form the support part. The support part has a receiving cavity, and the driving device is installed inside the receiving cavity.

[0018] Furthermore, the fixing frame includes a main frame body and a fixing cover;

[0019] One end of the main frame is fixed inside the hand-held part, and the other end extends outward after passing through the hollow branch to form a protruding end;

[0020] The fixed cover is located outside the hollow branch and is detachably connected to the protruding end. The protruding end and the fixed cover together constitute the support part, and the protruding end and the fixed cover together form the receiving cavity.

[0021] Furthermore, the driving device includes a motor, the output shaft of which has a first output end and a second output end disposed opposite to each other;

[0022] The first output end extends out of the support portion in a direction away from the hand-held portion, and the first output end is fixedly connected to the massage roller;

[0023] The second output terminal is located inside the hollow cavity and connected to the eccentric block.

[0024] Furthermore, a first speed-changing mechanism is provided between the first output end and the massage roller, and / or a second speed-changing mechanism is provided between the second output end and the eccentric block.

[0025] Furthermore, the handheld massager also includes a phototherapy component, wherein the handheld portion has a light-transmitting area at one end near the support portion, and the phototherapy component is disposed within the main body and has a light-emitting element corresponding to the light-transmitting area; and / or

[0026] The handheld massager also includes a liquid supply component. The handheld part has a liquid spray nozzle at one end near the support part. The liquid supply component is located inside the main body and includes a pump body that communicates with the liquid spray nozzle.

[0027] The beneficial effects of the handheld massager provided in this application embodiment are as follows: In the handheld massager of this application embodiment, an eccentric block is set in the hollow inner cavity of the massage roller, and the center of mass of the eccentric block is offset from its rotation axis. The output shaft of the drive device extends directly into the inside of the roller and is connected to the eccentric block for transmission, thereby driving the eccentric block to rotate inside the roller and generate impact force. This impact force is directly transmitted to the massage roller through the output shaft, without needing to be transmitted over a long distance through the main body, resulting in an extremely short vibration path and minimal loss. In addition, the massage roller is directly impacted by the internal eccentric block while rolling, forming a dual massage of rolling and vibration on the skin, significantly improving the vibration transmission efficiency and improving the problem of vibration source being far from the massage area and transmission loss being large in the prior art, thus helping to improve the massage effect. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A three-dimensional structural diagram of a handheld massager provided in an embodiment of this application;

[0030] Figure 2 A side view of a handheld massager provided in an embodiment of this application;

[0031] Figure 3 for Figure 2 Sectional view along the middle AA;

[0032] Figure 4 A schematic diagram showing the drive device provided in the embodiments of this application mounted on a mounting bracket;

[0033] Figure 5 A three-dimensional structural diagram of the eccentric block provided in an embodiment of this application;

[0034] Figure 6 This is a front view of a handheld massager provided in an embodiment of this application;

[0035] Figure 7 for Figure 6 A sectional view along the middle edge BB;

[0036] Figure 8 An exploded view of a handheld massager provided in an embodiment of this application.

[0037] The following are the labeling elements in the figure:

[0038] 1. Main body; 11. Shell; 111. Handheld part; 112. Hollow branch; 12. Fixing frame; 121. First part; 122. Second part; 123. Main frame body; 1231. Extended end; 124. Fixing cover; 13. Support part; 14. Receiving cavity;

[0039] 2. Massage roller; 21. Hollow inner cavity;

[0040] 3. Eccentric block; 31. Shaft joint; 32. Counterweight;

[0041] 4. Drive unit; 41. Output shaft; 411. First output end; 412. Second output end; 42. Drive body; 421. Contact surface; 43. Second speed change mechanism;

[0042] 5. Phototherapy components; 51. Translucent area; 52. Light-emitting element;

[0043] 6. Liquid supply assembly; 61. Spray nozzle; 62. Pump body; 63. Container; 64. Connecting pipeline; 65. Spray head;

[0044] 7. Control components. Detailed Implementation

[0045] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0046] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0047] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0049] Please see Figure 1 , Figure 2 and Figure 8 The handheld massager provided in the embodiments of this application will now be described. The handheld massager provided in the embodiments of this application includes a main body 1, a massage roller 2, an eccentric block 3, and a driving device 4.

[0050] Reference Figure 1 and, Figure 3 and Figure 4 The main body 1 has a handheld part 111 and a support part 13 that are connected to each other. The interior of the main body 1 forms an installation space, and the external contour conforms to the curve of a human hand. The handheld part 111 is elongated for easy one-handed grip, and the support part 13 extends from the handheld part 111 for mounting the massage roller 2. The main body 1 can be a split structure, i.e., the handheld part 111 and the support part 13 are connected by screws, clips, or threads; or it can be a one-piece structure, i.e., the handheld part 111 and the support part 13 are formed in the same injection molding or die casting. The interior of the handheld part 111 can be hollow to accommodate components such as batteries, circuit boards, and pump bodies 62. The support part 13 can be two branches that fork into a Y shape, a U-shaped integral bent frame, or a T-shaped cross frame. The end of the support part 13 is provided with a bearing seat or shaft hole for mounting the rotating shaft of the massage roller 2. The support part 13 can be hollow, accommodating components such as the fixing frame 12 and motor; or it can be solid, only providing structural support.

[0051] Reference Figure 1 and Figure 3The massage roller 2 is rotatably mounted on the support 13, and the massage roller 2 has a hollow inner cavity 21 inside. The massage roller 2 is the component that directly contacts the skin and performs massage actions. Its outer surface may be provided with a smooth silicone layer, raised texture, magnet inlay, or heating coating. The massage roller 2 is rotatably mounted on the support 13 via bearings or bushings, and can rotate freely about its own axis. The hollow inner cavity 21 is the cavity inside the massage roller 2, and its shape may be cylindrical, with a diameter slightly larger than the outer contour of the eccentric block 3, to leave the clearance required for the rotation of the eccentric block 3.

[0052] Reference Figure 3 and Figure 4 An eccentric block 3 is disposed within the hollow inner cavity 21, and the center of mass of the eccentric block 3 is offset from the rotation axis 33 of the eccentric block 3. The eccentric block 3 is a component whose center of gravity is offset from its geometric center, and can be made of metal or high-density material. The eccentric block 3 is installed in the hollow inner cavity 21 of the massage roller 2, and can be fixedly connected to the output shaft 41 of the drive device 4, and can rotate together with the output shaft 41.

[0053] Reference Figure 3 A drive device 4 is disposed within the main body 1. The drive device 4 has an output shaft 41, which is connected to the eccentric block 3. The drive device 4 can drive the eccentric block 3 to rotate around the output shaft 41. The output shaft 41 is also connected to the massage roller 2. When the eccentric block 3 rotates, it generates an impact force, which is transmitted to the massage roller 2. The drive device 4 can be an electric motor, a pneumatic motor, a hydraulic motor, etc. The impact force is a periodic inertial force generated when the eccentric block 3 rotates due to its center of mass deviating from the axis. The impact force can be transmitted through the drive device 4 and acts on the massage roller 2 and the entire main body 1.

[0054] In use, the user holds the handheld part 111 and places the massage roller 2 against the skin area to be massaged. The drive unit 4 starts operating, and the output shaft 41 drives the eccentric block 3 to rotate within the hollow inner cavity 21. Because the center of mass of the eccentric block 3 is off-axis of rotation, it generates periodic impact force during rotation. This impact force is directly transmitted to the massage roller 2 through the output shaft 41, causing the massage roller 2 to vibrate. At the same time, the connection between the output shaft 41 and the massage roller 2 ensures that the impact force can be stably transmitted, avoiding energy loss. Since the eccentric block 3 is directly set inside the massage roller 2, the impact force does not need to be transmitted from a distance, the transmission path is extremely short, vibration loss is minimal, and the massage effect is significantly enhanced.

[0055] Furthermore, referring to Figure 3 , Figure 4 and Figure 5The eccentric block 3 includes a shaft connection part 31 and a counterweight part 32 disposed on the outer periphery of the shaft connection part 31. The shaft connection part 31 is connected to the output shaft 41 of the drive device 4. The mass of the counterweight part 32 is non-uniformly distributed in the circumferential direction of the shaft connection part 31.

[0056] The shaft connection 31 can be cylindrical or cylindrical, with a shaft hole or bushing at the center. The counterweight 32 is the part on the eccentric block 3 that provides eccentric mass. The shape of the counterweight 32 can be fan-shaped, cylindrical, square, wedge-shaped, or irregularly shaped. The shaft connection 31 can be integrally formed with the counterweight 32, or it can be processed separately and then fixed by welding, screwing, or riveting. The distribution of the counterweight 32 in the circumferential direction of the shaft connection 31 is non-uniform, that is, the mass is concentrated within a certain angle range, while the mass is missing or thinner in the opposite angle range, thus forming a deviation of the center of mass. It can be a single-sided concentrated type, that is, all the counterweights are concentrated on one side of the shaft connection 31; or it can be a double-sided asymmetrical type, that is, there are counterweights on both sides but with different masses. The degree of non-uniform distribution determines the size of the eccentricity of the eccentric block 3, which in turn affects the magnitude of the impact force and the vibration intensity.

[0057] During operation, the output shaft 41 of the drive device 4 is connected to the shaft connection 31, driving the entire eccentric block 3 to rotate. Because the counterweights 32 are non-uniformly distributed around the shaft connection 31, the center of mass of the eccentric block 3 inevitably deviates from the geometric center of the shaft connection 31. As the eccentric block 3 rotates, its center of mass moves in a circular motion around the axis, generating periodic centrifugal force, i.e., impact force. The more significant the non-uniform distribution of the counterweights 32, the farther the center of mass deviates, the greater the impact force, and the stronger the vibration effect of the massage roller 2.

[0058] Furthermore, referring to Figure 5 The counterweight 32 has a fan-shaped cross-section perpendicular to the axis of the shaft connection 31. The central angle of the fan can be an acute angle, such as 30 degrees or 45 degrees; a right angle, such as 90 degrees; or an obtuse angle, such as 120 degrees or 180 degrees. During operation, the fan-shaped cross-section of the counterweight 32 concentrates its mass mainly on one side of the shaft connection 31, while the other side is relatively empty. This distribution maximizes the eccentricity within a limited radial space, that is, maximizes the distance of the center of mass from the axis. When the eccentric block 3 rotates, the arc side of the fan generates the greatest outward swinging inertia, while the radius side sweeps past quickly, forming obvious periodic impact force fluctuations. The larger the central angle of the fan, the greater the mass of the counterweight 32, and the stronger the impact force.

[0059] Furthermore, referring to Figure 3 and Figure 4The drive device 4 is also connected to the massage roller 2 via a transmission connection to drive the massage roller 2 to rotate actively relative to the main body 1. During operation, the drive device 4 operates, driving the massage roller 2 to rotate actively relative to the main body 1 via the transmission connection. The massage roller 2 continuously rolls on the skin surface, producing a kneading massage effect.

[0060] Because the massage roller 2 rotates actively, rather than passively rolling due to the user's pushing and pulling, it maintains a stable speed and torque even with high friction between the skin and the roller, preventing slippage or jamming. Unlike traditional manual massagers, users don't need to push and pull forcefully; simply holding the handle to keep the massager in contact with the skin allows the massage roller 2 to roll automatically under the drive of the drive unit 4. This significantly reduces arm strain, making prolonged massages easier. Combined with the control unit 7, the rotation direction of the massage roller 2 can be switched at any time, alternating between forward and reverse rotation to simulate the back-and-forth massage motion of a human hand, providing more comprehensive muscle relaxation.

[0061] Furthermore, referring to Figure 3 and Figure 4 The driving device 4 includes a driving body 42 and an output shaft 41 that passes through the driving body 42 and is rotatable relative to the driving body 42. The output shaft 41 has a first output end 411 and a second output end 412 that protrude from the driving body 42. The first output end 411 is fixedly connected to the eccentric block 3. The massage roller 2 is sleeved on the outer periphery of the support part 13 and fixedly connected to the second output end 412. The support part 13 is provided with a receiving cavity 14 for accommodating and fixing the driving body 42. The outer peripheral surface of the driving body 42 has a fitting surface 421 that fits in the circumferential direction with the inner wall surface of the receiving cavity 14, so as to transmit the impact force generated by the rotation of the eccentric block 3 to the support part through the fitting surface 421.

[0062] The drive body 42 is a component of the drive device 4 that remains stationary relative to the rotating parts, and may include a motor housing, stator core, bearing housing, or end cover. The outer contour of the drive body 42 may be cylindrical to fit against the inner wall of the receiving cavity 14; however, it may also be square, polygonal, or other shapes, as long as it is compatible with the receiving cavity 14. The output shaft 41 is a component of the drive device 4 that can rotate relative to the drive body 42.

[0063] The receiving cavity 14 can be a cylindrical cavity that matches the cylindrical outer contour of the motor housing; it can also be a square cavity that matches the square motor housing; or it can be an irregularly shaped cavity customized according to the special shape of the drive device 4. The mating surface 421 is an annular contact area on the outer peripheral surface of the drive body 42 that contacts the inner wall surface of the receiving cavity 14.

[0064] During operation, the drive body 42 of the drive unit 4 is embedded in the receiving cavity 14 of the support part 13, and the contact surface 421 on the outer peripheral surface of the drive body 42 is tightly fitted with the inner wall surface of the receiving cavity 14 in the circumferential direction. The output shaft 41 passes through the drive body 42, with one end connected to the massage roller 2 and the other end connected to the eccentric block 3. When the eccentric block 3 rotates and generates an impact force, this impact force is not only directly transmitted to the massage roller 2 through the output shaft 41, but also returned to the drive body 42 in the form of a reaction force through the bearing. Since the drive body 42 is tightly fitted with the inner wall of the receiving cavity 14, this reaction force is quickly transmitted to the entire support part 13 through the contact surface 421, thereby driving the body 1 to vibrate as a whole, further enhancing the vibration effect of the massage roller 2.

[0065] Furthermore, referring to Figure 1 , Figure 3 and Figure 4 The main body 1 includes a housing 11 and a fixing frame 12; the housing 11 includes a handheld part 111 and a hollow branch 112 extending from the handheld part 111; the fixing frame 12 includes a first part 121 and a second part 122 connected to each other, the first part 121 is fixed in the handheld part 111, and the second part 122 extends outward from the hollow branch 112 to form a support part 13, the support part 13 has a receiving cavity 14, and the driving device 4 is installed in the receiving cavity 14.

[0066] The housing 11 is the outer covering structure of the main body 1. It can be a two-part structure molded by injection molding and joined by ultrasonic welding or screws; or it can be a one-piece structure molded by die casting. The housing 11 includes two functional areas: a handhold 111 and a hollow branch 112. The handhold 111 is used for gripping, and the hollow branch 112 is used to accommodate the second part 122 of the fixing frame 12.

[0067] The mounting bracket 12 is used to mount the drive unit 4 and connect it to the housing 11 to form a rigid whole. The first part 121 of the mounting bracket 12 may be located inside the handle portion 111 and fixedly connected to the handle portion 111 area of ​​the housing 11; the second part 122 of the mounting bracket 12 extends outward from the hollow branch 112 to form a support portion 13. The mounting bracket 12 may be integral, that is, the first part 121 and the second part 122 are continuously formed on the same piece; or it may be separate, that is, the first part 121 and the second part 122 are connected by screws, clips or welding.

[0068] The hollow branch 112 is a tubular or arm-shaped structure extending from the handle 111 on the housing 11, and is hollow inside to accommodate the second part 122 of the fixing frame 12. There can be two hollow branches 112, forming a Y-shape or a U-shape; or there can be three or more, forming a multi-forked shape. The ends of the hollow branches 112 may be provided with openings for the second part 122 of the fixing frame 12 to extend out.

[0069] During operation, the first part 121 of the mounting bracket 12 is fixed inside the housing 11 of the handheld part 111, providing a foundation for the entire mounting bracket 12. The second part 122 extends outward from the hollow branch 112, passing through the opening at the end of the hollow branch 112 to form a cantilevered support part 13. The drive device 4 is installed in the receiving cavity 14 of the support part 13. When the drive device 4 operates, the mounting bracket 12 transmits the reaction force of the drive device 4 back to the handheld part 111, making the entire body 1 a rigid system that vibrates as a whole. The hollow branch 112 of the housing 11 provides lateral protection and support for the mounting bracket 12, preventing the mounting bracket 12 from undergoing excessive deformation or breakage under vibration and impact. This separate structure of the housing 11 and the mounting bracket 12 allows for the selection of different materials to optimize performance; for example, the housing 11 can be made of soft rubber to ensure a comfortable grip, while the mounting bracket 12 can be made of metal to ensure structural strength.

[0070] Furthermore, referring to Figure 3 and Figure 4 The fixing frame 12 includes a main frame body 123 and a fixing cover 124; one end of the main frame body 123 is fixed inside the hand-held part 111, and the other end extends outward through the hollow branch 112 to form an extension end 1231; the fixing cover 124 is outside the hollow branch 112 and detachably connected to the extension end 1231, the extension end 1231 and the fixing cover 124 together constitute the support part 13, and the extension end 1231 and the fixing cover 124 together form the receiving cavity 14.

[0071] The main frame 123 may be elongated or cantilevered, with one end being a fixed end, fixed inside the housing 11 of the handheld part 111, and the other end being an extended end 1231, extending outward from the hollow branch 112. The fixed end of the main frame 123 may have a flange, mounting hole, or slot for fixing to the housing 111 of the handheld part 111. The extended end 1231 of the main frame 123 may have a bearing seat, threaded hole, or snap fastener for mounting the fixing cover 124 and the drive device 4. The fixing cover 124 is a detachable component that mates with the extended end 1231 of the main frame 123 to form a closed receiving cavity 14. The connection between the fixing cover 124 and the extended end 1231 can be a threaded connection, a snap fastener connection, a screw connection, etc. The fixing cover 124 may have a central hole for the output shaft 41 of the drive device 4 to pass through.

[0072] The protruding end 1231 of the main frame 123 cooperates with the fixed cover 124 to form a closed or semi-closed space. This space is the receiving cavity 14. The enclosure can be one end open and one end closed, that is, the protruding end 1231 is a U-shaped groove and the fixed cover 124 is a cover plate, and the two are fastened together; or it can be two ends open and the middle closed, that is, the protruding end 1231 is tubular and the fixed cover 124 is the end cap at both ends. The shape of the receiving cavity 14 formed by the enclosure is adapted to the shape of the driving device 4, and can be cylindrical, square or irregular.

[0073] Understandably, the aforementioned mating surface 421 is formed between the inner wall of the receiving cavity 14 and the outer peripheral surface of the driving body 42 of the driving device 4. In other words, the receiving cavity 14 formed by the main frame 123 and the fixed cover 124 described in this paragraph is a specific implementation of the aforementioned mating surface 421.

[0074] Based on the above structure, when maintenance or replacement of the drive unit 4 is required, the drive unit 4 can be removed from the receiving cavity 14 simply by removing the fixing cover 124, without disassembling the entire fixing frame 12 or housing 11. The enclosure structure of the protruding end 1231 and the fixing cover 124 ensures the sealing of the receiving cavity 14, preventing dust and liquid intrusion, while also providing a convenient assembly and maintenance passage. The fixing cover 124 can be detachably connected by quick-release clips for easy user replacement, or by screw fastening, suitable for scenarios where it will not be disassembled after factory assembly.

[0075] Furthermore, referring to Figure 3 and Figure 4 The driving device 4 includes a motor, and the output shaft 41 of the motor has a first output end 411 and a second output end 412 arranged opposite to each other; the first output end 411 extends out of the support part 13 in a direction away from the hand-held part 111, and the first output end 411 is fixedly connected to the massage roller 2; the second output end 412 is located in the hollow inner cavity 21 and is connected to the eccentric block 3.

[0076] An electric motor is a rotary drive device that converts electrical energy into mechanical energy. An electric motor includes components such as a stator, rotor, bearings, and housing. The output shaft 41 is a rotating component in the motor that transmits torque; it is a metal shaft.

[0077] The first output end 411 is the end of the output shaft 41 extending away from the handheld part 111, and can be located at the outer end of the support part 13. The first output end 411 is fixedly connected to the massage roller 2, and can be directly inserted into the center hole of the massage roller 2, and fixed by a key, flat joint, or thread; it can also be connected to the massage roller 2 by a coupling, flange, or end cover. The end of the first output end 411 may have a threaded hole, a positioning boss, or a bearing seat to install and position the massage roller 2. The second output end 412 is the end of the output shaft 41 located on the other side of the motor, and can extend toward the interior of the hollow inner cavity 21 of the massage roller 2. The second output end 412 is fixedly connected to the eccentric block 3, and the connection method can be threaded connection, key connection, or set screw fixation. This arrangement places the motor between the massage roller 2 and the eccentric block 3, forming a compact coaxial layout.

[0078] During operation, the motor's rotor rotates after being powered on, driving the output shaft 41 to rotate as a whole. The first output end 411 drives the massage roller 2 to rotate actively relative to the main body 1, achieving rolling massage. At the same time, the second output end 412 drives the eccentric block 3 to rotate synchronously within the hollow inner cavity 21 of the massage roller 2. Because the center of mass of the eccentric block 3 is off-axis, it generates an impact force during rotation. This impact force is transmitted directly in the reverse direction to the massage roller 2 through the output shaft 41, causing it to vibrate; on the other hand, it is transmitted through the motor housing to the support part 13 and the main body 1, driving the entire massager to vibrate. The first output end 411 and the second output end 412 are driven by the same output shaft 41, ensuring strict synchronization of rolling and vibration, avoiding the phase difference or speed difference problems that may occur with dual-motor schemes. The motor is located between the two loads, resulting in a compact structure, balanced force, and the shortest vibration transmission path.

[0079] A first speed-changing mechanism is provided between the first output end 411 and the massage roller 2, and / or a second speed-changing mechanism 43 is provided between the second output end 412 and the eccentric block 3.

[0080] A speed change mechanism is a mechanical transmission component used to change speed and torque, and can be a gear reducer, belt drive mechanism, or chain drive mechanism, etc.

[0081] The first speed-changing mechanism is a speed-changing mechanism located between the first output end 411 and the massage roller 2, used to adjust the rotational speed of the massage roller 2. The first speed-changing mechanism can be a speed-reducing mechanism, that is, reducing the rotational speed and increasing the torque, so that the massage roller 2 rolls smoothly at a lower speed, or it can be a speed-increasing mechanism, that is, increasing the rotational speed, for special high-speed massage needs.

[0082] The second speed-changing mechanism 43 is a speed-changing mechanism located between the second output end 412 and the eccentric block 3, used to adjust the rotational speed of the eccentric block 3. The second speed-changing mechanism 43 can be a speed-increasing mechanism, that is, increasing the rotational speed of the eccentric block 3 to generate a higher frequency impact force and enhance the vibration effect; or it can be a speed-reducing mechanism, that is, reducing the rotational speed of the eccentric block 3 for gentle vibration massage.

[0083] In some embodiments, the handheld massager only has a first speed-changing mechanism, and the second output end 412 is directly connected to the eccentric block 3. The motor speed is typically high, for example, several thousand to tens of thousands of revolutions per minute. However, when the massage roller 2 rolls back and forth on the skin surface, the speed should not be too fast, otherwise it will cause the massager to slide uncontrollably on the skin, or cause a pulling discomfort. In these embodiments, the first speed-changing mechanism is a reduction mechanism, which can reduce the high speed of the motor to a low speed suitable for the rolling of the massage roller 2, while increasing the output torque, so that the roller can roll stably and actively, and is not easily stopped even when encountering greater skin resistance. The eccentric block 3 is directly connected to the second output end 412, rotating at the original high speed of the motor to generate high-frequency impact force, achieving a delicate vibration massage effect. This configuration is suitable for massage scenarios where vibration is the primary element and rolling is secondary, with a high vibration frequency and a moderate rolling speed.

[0084] In some embodiments, refer to Figure 3 and Figure 4 The handheld massager only has a second speed-changing mechanism 43, and the first output end 411 is directly connected to the massage roller 2. The motor speed itself is adapted to the rolling requirements of the massage roller 2, that is, the motor operates at a lower speed, and the massage roller 2 rolls smoothly at this low speed without deceleration. In these embodiments, the second speed-changing mechanism 43 is a speed-increasing mechanism, such as a pair of speed-increasing gears, which increases the motor speed and transmits it to the eccentric block 3, causing the eccentric block 3 to rotate at a speed higher than the motor speed, generating a higher frequency impact force. This configuration is suitable for massage scenarios that require a strong vibration and tapping sensation, such as deep muscle relaxation. The high-speed rotation of the eccentric block 3 generates a strong periodic impact, which is transmitted through the output shaft 41 and the main body 1, so that the massage roller 2 forms a powerful tapping effect, while the rolling speed remains moderate and does not cause excessive friction to the skin.

[0085] In some embodiments, the handheld massager is equipped with a first speed-changing mechanism and a second speed-changing mechanism 43, which allow for independent adjustment of the rotation speed at both ends. The first speed-changing mechanism is a reduction mechanism that reduces the motor speed before transmitting it to the massage roller 2, allowing the roller to roll smoothly at a suitable low speed. The second speed-changing mechanism 43 is a speed-increasing mechanism that increases the motor speed before transmitting it to the eccentric block 3, causing the eccentric block 3 to rotate at high speed and generate a high-frequency impact force. This configuration optimizes both rolling and vibration functions: the rolling speed is slow enough to ensure that the massager can move controllably on the skin without slipping or going out of control; the vibration frequency is high enough to produce a noticeable tapping sensation, effectively relaxing deep muscles.

[0086] Furthermore, referring to Figure 2 , Figure 6 and Figure 7 The handheld massager further includes a phototherapy component 5. The handheld part 111 has a light-transmitting area 51 at one end near the support part 13. The phototherapy component 5 is disposed in the main body 1 and has a light-emitting element 52 corresponding to the light-transmitting area 51. And / or the handheld massager further includes a liquid supply component 6. The handheld part 111 has a liquid spray nozzle 61 at one end near the support part 13. The liquid supply component 6 is disposed in the main body 1 and includes a pump body 62 communicating with the liquid spray nozzle 61.

[0087] The phototherapy component 5 is a device that uses light of a specific wavelength to irradiate the skin to achieve a therapeutic effect. The phototherapy component 5 can be a red light therapy component, emitting red light with a wavelength of approximately 630 to 700 nanometers; it can also be a blue light therapy component, emitting blue light with a wavelength of approximately 400 to 470 nanometers; or it can be a near-infrared therapy component, emitting near-infrared light with a wavelength of approximately 700 to 1400 nanometers. The phototherapy component 5 may include components such as a light-emitting element 52, a driving circuit, a heat sink, and an optical lens.

[0088] The light-emitting element 52 can be an LED bead, a laser diode, an OLED light-emitting sheet, or a Mini LED array. The light-emitting surface of the light-emitting element 52 is positioned facing the light-transmitting area 51 to ensure effective light emission.

[0089] The light-transmitting area 51 can be a window made of transparent material, such as transparent PC, acrylic, or glass, or it can be a through hole or a semi-transparent thin-walled area opened on the housing 11. The light-transmitting area 51 can be located at one end of the handheld part 111 near the support part 13, that is, the area between the two massage rollers 2, so that light can shine on the massage area.

[0090] The liquid supply assembly 6 may include components such as a container 63, a pump body 62, a connecting pipe 64, and a nozzle 65. The inlet end of the pump body 62 is connected to the container 63, and the outlet end is connected to the spray nozzle 61 through the connecting pipe 64. The spray nozzle 61 can be a simple round hole or a nozzle with an atomizing structure. The spray nozzle 61 can be located at one end of the handheld part 111 near the support part 13, that is, in the area between the two massage rollers 2, so that the liquid can be directly sprayed onto the skin of the massage area.

[0091] In some embodiments, the handheld massager is equipped with only the phototherapy component 5 and not the liquid supply component 6. The phototherapy component 5 does not occupy the space of the support part 13 and does not affect the vibration and rolling function of the massage roller 2, so that the massager adds a physiotherapy effect on the basis of the original massage function, which is suitable for scenarios that need to improve skin condition or relieve deep muscle fatigue.

[0092] In some embodiments, the handheld massager is equipped with only the liquid supply component 6 and not the phototherapy component 5. The liquid supply component 6 works in conjunction with the massage function to make the massage process more comfortable and achieve skin care or therapeutic effects.

[0093] In some embodiments, refer to Figure 2 , Figure 6 and Figure 7 The handheld massager is equipped with a phototherapy component 5 and a liquid supply component 6, enabling it to simultaneously perform four functions: rolling massage, vibration massage, phototherapy, and liquid supply, achieving a multi-functional care effect.

[0094] In some embodiments, refer to Figure 1 and Figure 7 The handheld massager also includes a control component 7, which is disposed on the handheld part 111 and electrically connected to the drive device 4. When the control component 7 is operated, it switches the rotation direction of the drive device 4.

[0095] The control component 7 can be a mechanical button, a capacitive sensor, or a pressure sensor. The control component 7 is located on the handheld part 111, in an area naturally accessible to the thumb, such as the front, side, or top of the handheld part 111, facilitating blind operation while holding the hand. When the control component 7 is operated, it generates an electrical signal, which is processed by the circuit and received by the drive device 4, which then switches the rotation direction accordingly.

[0096] During operation, the user holds the handle 111 with one hand and places the massage roller 2 against the skin area to be massaged. The drive unit 4 is powered on, causing the massage roller 2 to rotate actively. Simultaneously, the rotation of the eccentric block 3 generates an impact force that vibrates the massage roller 2, creating a combined massage effect of rolling and vibration. When the user wishes to change the rolling direction of the massage roller 2, they touch the control component 7 and operate it. Upon operation, the control component 7 immediately generates an electrical signal. Upon receiving this signal, the drive unit 4 switches the rotation direction of the output shaft 41, causing the massage roller 2 to rotate in the opposite direction.

[0097] Because the massage roller 2 rotates actively rather than rolls passively, the direction switching is responded to instantly by the drive device 4, so the user does not need to push or pull forcefully to produce reciprocating motion like with traditional manual massagers. This greatly reduces the burden on the arms, and it is not easy to get tired even after long-term use.

[0098] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A handheld massager, characterized in that, include: The main body has a hand-held part and a support part that are connected to each other; A massage roller is rotatably mounted on the support, and the massage roller has a hollow inner cavity. An eccentric block is disposed within the hollow inner cavity, and the center of mass of the eccentric block is offset from the rotation axis of the eccentric block; as well as A driving device is disposed within the main body. The driving device has an output shaft, which is connected to the eccentric block in a transmission manner. The driving device can drive the eccentric block to rotate around the output shaft. When the eccentric block rotates, it can generate an impact force and transmit it to the massage roller.

2. The handheld massager according to claim 1, characterized in that, The eccentric block includes a shaft connection portion and a counterweight portion disposed on the outer periphery of the shaft connection portion. The shaft connection portion is connected to the output shaft of the drive device. The mass of the counterweight portion is non-uniformly distributed in the circumferential direction of the shaft connection portion.

3. The handheld massager according to claim 2, characterized in that, The cross-section of the counterweight part perpendicular to the axis of the shaft connection part is fan-shaped.

4. The handheld massager according to any one of claims 1 to 3, characterized in that, The drive device is also connected to the massage roller to drive the massage roller to rotate actively relative to the main body.

5. The handheld massager according to claim 4, characterized in that, The driving device further includes a driving body, the output shaft passes through the driving body and can rotate relative to the driving body, the output shaft has a first output end and a second output end that are exposed outside the driving body, the first output end is fixedly connected to the eccentric block, and the massage roller is sleeved on the outer periphery of the support and fixedly connected to the second output end. The support portion has a receiving cavity for accommodating and fixing the driving body. The outer peripheral surface of the driving body has a fitting surface that fits in the circumferential direction with the inner wall surface of the receiving cavity, so as to transmit the impact force generated by the rotation of the eccentric block to the support portion through the fitting surface.

6. The handheld massager according to claim 1, characterized in that, The main body includes a shell and a mounting frame; The housing includes the handle portion and a hollow branch extending from the handle portion; The fixing frame includes a first part and a second part that are connected to each other. The first part is fixed inside the hand-held part, and the second part extends outward from the hollow branch to form the support part. The support part has a receiving cavity, and the driving device is installed inside the receiving cavity.

7. The handheld massager according to claim 6, characterized in that, The fixing frame includes a main frame body and a fixing cover; One end of the main frame is fixed inside the hand-held part, and the other end extends outward after passing through the hollow branch to form a protruding end; The fixed cover is located outside the hollow branch and is detachably connected to the protruding end. The protruding end and the fixed cover together constitute the support part, and the protruding end and the fixed cover together form the receiving cavity.

8. The rolling and vibrating massager according to claim 7, characterized in that, The drive device includes a motor, and the output shaft of the motor has a first output end and a second output end that are disposed opposite to each other. The first output end extends out of the support portion in a direction away from the hand-held portion, and the first output end is fixedly connected to the massage roller; The second output terminal is located inside the hollow cavity and connected to the eccentric block.

9. The handheld massager according to claim 8, characterized in that, A first speed-changing mechanism is provided between the first output end and the massage roller, and / or a second speed-changing mechanism is provided between the second output end and the eccentric block.

10. The handheld massager according to claim 1, characterized in that, The handheld massager further includes a phototherapy component. The handheld part has a light-transmitting area at one end near the support part. The phototherapy component is disposed within the main body and has a light-emitting element corresponding to the light-transmitting area; and / or The handheld massager also includes a liquid supply component. The handheld part has a liquid spray nozzle at one end near the support part. The liquid supply component is located inside the main body and includes a pump body that communicates with the liquid spray nozzle.

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