Vibrating device and massager

Abstract

The application discloses a vibrating device and a massager. The vibrating device comprises a motor, a first mounting seat, an eccentric shaft, an eccentric block and a constraint assembly. The motor has a driving shaft. The first mounting seat is arranged on the motor and is fixedly connected with the motor. The first mounting seat is fixedly connected with a second mounting seat. One side of the eccentric shaft is fixedly connected with the driving shaft, and the other side of the eccentric shaft is provided with an eccentric end. The eccentric block comprises a first eccentric block, the first eccentric block is fixedly connected with the eccentric end, and the first eccentric block is provided with a first containing cavity and a first avoiding cavity. The constraint assembly comprises a first constraint part and a second constraint part. The first constraint part is sleeved on the second constraint part, and the first constraint part is in sliding fit with the second constraint part. The first constraint part is movably arranged in the first containing cavity. One end of the second constraint part is fixedly connected with the second mounting seat, and the other end of the second constraint part extends to the first avoiding cavity. Compared with the prior art, the reliability of the massager is improved.

Description

Technical Field

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

[0002] Currently, massagers are becoming increasingly popular as household items, and their variety is also expanding. They not only help people relax their bodies but also aid in rehabilitation and physical therapy. Vibration massagers use mechanical vibrations to simulate human hand massage, applying pressure to the skin, muscles, fascia, and ligaments of the massaged area to relieve fatigue and promote blood circulation.

[0003] Vibration massagers work by installing a vibration motor inside the flexible massage section. The motor drives an eccentric block to rotate, and the centrifugal force generated by the rotation of the eccentric block reacts back onto the motor, which then transmits the force to the flexible massage section, thus achieving the vibration massage function. Typically, during the design process, the motion envelope generated by the eccentric block's circular motion is designed based on the inner radius of the flexible massage section. This ensures that the motion envelope generated by the eccentric block's circular motion does not interfere with the inner wall of the flexible massage section. However, since the eccentric block is usually fixed to the motor's drive shaft with screws, under long-term vibration, the screws may loosen, leading to instability during the eccentric block's circular motion (i.e., the eccentric block may experience slight radial displacement). This causes the motion envelope generated by the eccentric block's circular motion to deviate from the initially designed motion envelope, resulting in the eccentric block colliding with the inner wall of the flexible massage section during its circular motion. This increases the probability of damage to the flexible massage section, thus reducing the reliability of the massager. Summary of the Invention

[0004] This application provides a vibration device and a massager, which can reduce the probability of the first eccentric block colliding with the inner wall of the massager's housing during movement, thereby improving the reliability of the massager's use.

[0005] In a first aspect, this application provides a vibration device, including a motor, a first mounting base, an eccentric shaft, an eccentric block, and a constraint assembly. The motor has a drive shaft. The first mounting base is disposed on the motor and fixedly connected to the motor, and a second mounting base is fixedly connected to the first mounting base. One side of the eccentric shaft is fixedly connected to the drive shaft, and the other side of the eccentric shaft is provided with an eccentric end. The eccentric block includes a first eccentric block, which is fixedly connected to the eccentric end, and the first eccentric block is provided with a first receiving cavity and a first clearance cavity. The constraint assembly includes a first constraint member and a second constraint member, the first constraint member is sleeved on the second constraint member, the first constraint member and the second constraint member are slidably engaged, the first constraint member is movably disposed in the first receiving cavity, one end of the second constraint member is fixedly connected to the second mounting base, and the other end of the second constraint member extends into the first clearance cavity.

[0006] In the above technical solution, by setting the drive shaft of the motor to be fixedly connected to one side of the eccentric shaft, and the eccentric end of the eccentric shaft to be fixedly connected to the first eccentric block, when the drive shaft of the motor drives the eccentric shaft to rotate, the eccentric end of the eccentric shaft will make a circular motion around the axis of the drive shaft. At the same time, a first constraint member is set on the second constraint member, the first constraint member and the second constraint member are slidably engaged, and one end of the second constraint member is fixedly connected to the second mounting base. This allows the first constraint member to be slidably fitted on the second constraint member. When the drive shaft of the motor drives the eccentric shaft and drives the first constraint member to move through the first eccentric block, the first constraint member will slide linearly along the axis of the second constraint member due to the constraint of the second constraint member. Thus, under the motion coupling effect of the circular motion of the eccentric end and the linear sliding motion of the first constraint member, the first eccentric block makes a planar composite motion (i.e., oscillation). At the same time, since the first constraint member is movably set in the first receiving cavity and the other end of the second constraint member is located in the first clearance cavity, the first eccentric block will not interfere with the first constraint member and the second constraint member when it makes a planar composite motion (i.e., oscillation). Firstly, the motion envelope area generated by the first eccentric block performing planar composite motion (i.e., oscillation) is smaller than the motion envelope area generated by the first eccentric block being driven by the eccentric end to perform circular motion around the drive shaft axis. This increases the safety clearance between the moving parts and the inner wall of the massager housing under the condition that the internal space of the massager housing is fixed. Secondly, due to the constraint effect of the first and second constraint members, the displacement degree of freedom in the direction perpendicular to the axis of the second constraint member is eliminated, effectively suppressing undesigned shaking caused by bearing clearance or vibration excitation, and reducing the probability of the motion trajectory of the first eccentric block deviating from the planar composite motion (i.e., oscillation). Therefore, through the reduction of the motion envelope area and the synergistic effect of the first and second constraint members, the probability of the first eccentric block colliding with the inner wall of the massager housing during movement is reduced, thereby improving the reliability of the massager.

[0007] Secondly, embodiments of this application provide a massager, including a housing and a vibration device provided in any of the embodiments of the first aspect. The housing has a massage portion that contacts the area to be massaged, and the massage portion has a second receiving cavity. The vibration device is disposed within the second receiving cavity.

[0008] Thirdly, embodiments of this application provide a massager, including a housing and a vibration device provided in any of the embodiments of the first aspect. The housing has a massage part that contacts the area to be massaged and a handheld part for the user to hold. The massage part is rotatably connected to the handheld part, and the massage part has a second receiving cavity. The vibration device is disposed within the second receiving cavity. Attached Figure Description

[0009] To more clearly illustrate the technical solutions of the embodiments of this application, 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 this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of the structure of the vibration device provided in some embodiments of this application; Figure 2 This is a schematic diagram of the structure of a vibration device provided in some other embodiments of this application; Figure 3 This is a schematic diagram of the structure of a vibration device provided in some embodiments of this application; Figure 4 A schematic diagram of the structure of a vibration device provided in some embodiments of this application (showing a second eccentric block); Figure 5 A schematic diagram of the structure of a vibration device provided in some embodiments of this application (showing a third eccentric block); Figure 6 A schematic diagram of the structure of a vibration device provided in some embodiments of this application (showing the fourth eccentric block); Figure 7 A schematic diagram of the structure of a vibration device provided in some embodiments of this application (showing a reduction gearbox); Figure 8 This is a schematic diagram of the structure of a massager provided in some embodiments of this application; Figure 9 This is a schematic diagram of the structure of a massager provided in other embodiments of this application; Figure 10 A schematic diagram of the structure of a massager provided in some embodiments of this application (showing a first reinforcing rib); Figure 11A schematic diagram of the structure of a massager provided in some embodiments of this application (showing a first massage structure); Figure 12 A schematic diagram of the structure of a massager provided for other embodiments of this application (showing a first massage structure); Figure 13 A schematic diagram of the structure of a massager provided in some embodiments of this application (showing a second massage structure); Figure 14 A schematic diagram of the structure of a massager provided for other embodiments of this application (showing a second massage structure); Figure 15 This is a schematic diagram of the structure of a massager provided in some embodiments of this application.

[0011] icon: 1000-Massager; 10-Vibration device, 11-Motor, 111-Drive shaft, 12-First mounting base, 13-Second mounting base, 14-Eccentric shaft, 141-Eccentric end, 142-First shaft, 143-First surface, 144-Second surface, 15-Eccentric block, 151-First eccentric block, 1511-First receiving cavity, 1512-First clearance cavity, 152-Second eccentric block, 153-Third eccentric block, 154-Fourth eccentric block, 1541-Smooth bolt, 16-Constraint assembly, 161-First constraint member, 1611-Ball, 162-Second constraint member, 1621-Guide post, 17-Reduction gearbox; 20-Shell, 21-Massage section, 211-First massage structure, 2111-First protrusion, 212-Second massage structure, 2121-Second protrusion, 22-Second receiving cavity, 23-First reinforcing rib, 24-Handheld part, 25-Connector; L - Drive shaft axis, X - Motor axial direction, Y - Motor radial direction. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0013] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0014] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0015] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" 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 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 application according to the specific circumstances.

[0016] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0017] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0018] Currently, massagers are becoming increasingly popular as household items, and their variety is also expanding. They not only help people relax their bodies but also aid in rehabilitation and physical therapy. Vibration massagers use mechanical vibrations to simulate human hand massage, applying pressure to the skin, muscles, fascia, and ligaments of the massaged area to relieve fatigue and promote blood circulation.

[0019] Vibration massagers work by installing a vibration motor inside the flexible massage section. The motor drives an eccentric block to rotate, and the centrifugal force generated by the rotation of the eccentric block reacts back onto the motor, which then transmits the force to the flexible massage section, thus achieving the vibration massage function. Typically, during the design process, the motion envelope generated by the eccentric block's circular motion is designed based on the inner radius of the flexible massage section. This ensures that the motion envelope generated by the eccentric block's circular motion does not interfere with the inner wall of the flexible massage section. However, since the eccentric block is usually fixed to the motor's drive shaft with screws, under long-term vibration, the screws may loosen, leading to instability during the eccentric block's circular motion (i.e., the eccentric block may experience slight radial displacement). This causes the motion envelope generated by the eccentric block's circular motion to deviate from the initially designed motion envelope, resulting in the eccentric block colliding with the inner wall of the flexible massage section during its circular motion. This increases the probability of damage to the flexible massage section, thus reducing the reliability of the massager.

[0020] Based on the above considerations, in order to solve the technical problem that the screws may loosen under long-term vibration of the vibrating motor, causing the motion envelope of the eccentric block to deviate from the initially designed motion envelope, resulting in the eccentric block colliding with the inner wall of the flexible massage part and reducing the reliability of the massager, this application provides a vibration device, including a motor, a first mounting base, an eccentric shaft, an eccentric block, and a constraint assembly. The motor has a drive shaft. The first mounting base is disposed on the motor and fixedly connected to the motor, and a second mounting base is fixedly connected to the first mounting base. One side of the eccentric shaft is fixedly connected to the drive shaft, and an eccentric end is provided on the other side of the eccentric shaft. The eccentric block includes a first eccentric block, which is fixedly connected to the eccentric end, and the first eccentric block has a first receiving cavity and a first clearance cavity. The constraint assembly includes a first constraint member and a second constraint member. The first constraint member is sleeved on the second constraint member and the first constraint member and the second constraint member are slidably engaged. The first constraint member is movably disposed in the first receiving cavity. One end of the second constraint member is fixedly connected to the second mounting base, and the other end of the second constraint member extends into the first clearance cavity.

[0021] In this vibration device, the drive shaft of the motor is fixedly connected to one side of the eccentric shaft, and the eccentric end of the eccentric shaft is fixedly connected to the first eccentric block. When the drive shaft of the motor drives the eccentric shaft to rotate, the eccentric end of the eccentric shaft will make a circular motion around the axis of the drive shaft. At the same time, a first constraint member is set on the second constraint member, and the first constraint member and the second constraint member are slidably engaged. One end of the second constraint member is fixedly connected to the second mounting base, so that the first constraint member can be slidably fitted on the second constraint member. When the drive shaft of the motor drives the eccentric shaft and drives the first constraint member to move through the first eccentric block, the first constraint member will slide linearly along the axis of the second constraint member due to the constraint of the second constraint member. Under the motion coupling effect of the circular motion of the eccentric end and the linear sliding motion of the first constraint member, the first eccentric block makes a planar composite motion (i.e., oscillation). At the same time, since the first constraint member is movably set in the first receiving cavity and the other end of the second constraint member is located in the first clearance cavity, the first eccentric block will not interfere with the first and second constraint members when it makes a planar composite motion (i.e., oscillation). Firstly, the motion envelope area generated by the first eccentric block performing planar composite motion (i.e., oscillation) is smaller than the motion envelope area generated by the first eccentric block being driven by the eccentric end to perform circular motion around the drive shaft axis. This increases the safety clearance between the moving parts and the inner wall of the massager housing under the condition that the internal space of the massager housing is fixed. Secondly, due to the constraint effect of the first and second constraint members, the displacement degree of freedom in the direction perpendicular to the axis of the second constraint member is eliminated, effectively suppressing undesigned shaking caused by bearing clearance or vibration excitation, and reducing the probability of the motion trajectory of the first eccentric block deviating from the planar composite motion (i.e., oscillation). Therefore, through the reduction of the motion envelope area and the synergistic effect of the first and second constraint members, the probability of the first eccentric block colliding with the inner wall of the massager housing during movement is reduced, thereby improving the reliability of the massager.

[0022] Please refer to Figure 1-3 , Figure 1 This is a schematic diagram of the structure of the vibration device provided in some embodiments of this application. Figure 2 This is a schematic diagram of the structure of a vibration device provided in some other embodiments of this application. Figure 3This is a schematic diagram of the structure of a vibration device provided in some embodiments of this application. An embodiment of this application provides a vibration device 10, including a motor 11, a first mounting base 12, an eccentric shaft 14, an eccentric block 15, and a constraint assembly 16. The motor 11 has a drive shaft 111. The first mounting base 12 is disposed on the motor 11 and is fixedly connected to the motor 11. A second mounting base 13 is fixedly connected to the first mounting base 12. One side of the eccentric shaft 14 is fixedly connected to the drive shaft 111, and the other side of the eccentric shaft 14 is provided with an eccentric end 141. The eccentric block 15 includes a first eccentric block 151, which is fixedly connected to the eccentric end 141. The first eccentric block 151 has a first receiving cavity 1511 and a first clearance cavity 1512. The constraint assembly 16 includes a first constraint member 161 and a second constraint member 162. The first constraint member 161 is sleeved on the second constraint member 162, and the first constraint member 161 and the second constraint member 162 are slidably engaged. The first constraint member 161 is movably disposed in the first receiving cavity 1511. One end of the second constraint member 162 is fixedly connected to the second mounting base 13, and the other end of the second constraint member 162 extends into the first clearance cavity 1512.

[0023] The motor 11 can be a brushed DC motor 11, a brushless DC motor 11, a stepper motor 11, or an AC motor 11, etc.

[0024] The first mounting base 12 and the motor 11 can be fixedly connected in a detachable manner, such as by threaded connection, key connection, pin connection or snap-fit ​​connection.

[0025] The fixed connection between the first mounting base 12 and the second mounting base 13 can be a non-removable fixed connection, such as welding, riveting, or injection molding.

[0026] One side of the eccentric shaft 14 is fixedly connected to the drive shaft 111. This can be achieved by the eccentric shaft 14 having a first surface 143 facing the motor 11, on which a first shaft 142 is provided. The first shaft 142 is non-detachably fixed to the drive shaft 111, for example, by welding, riveting, or injection molding, and the first shaft 142 is coaxial with the drive shaft 111. The other side of the eccentric shaft 14 has an eccentric end 141. Alternatively, the eccentric shaft 14 can have a second surface 144 away from the motor 11, on which the eccentric end 141 is provided. This eccentric end 141 is not coaxial with the drive shaft 111. For example, the eccentric end 141 may be located at the edge of the second surface 144 and away from the drive shaft axis L.

[0027] The fixed connection between the first eccentric block 151 and the eccentric end 141 can be a non-detachable fixed connection, such as welding, riveting, or injection molding.

[0028] In this embodiment, the drive shaft 111 of the motor 11 is fixedly connected to one side of the eccentric shaft 14, and the eccentric end 141 of the eccentric shaft 14 is fixedly connected to the first eccentric block 151. Thus, when the drive shaft 111 of the motor 11 drives the eccentric shaft 14 to rotate, the eccentric end 141 of the eccentric shaft 14 will perform circular motion around the axis L of the drive shaft. Simultaneously, a first constraint member 161 is sleeved on a second constraint member 162, with the first constraint member 161 and the second constraint member 162 slidingly engaged. One end of the second constraint member 162 is fixedly connected to the second mounting base 13. This allows the first constraint member 161 to be slidably sleeved on the second constraint member 162. When the drive shaft 111 of the motor 11 drives the eccentric shaft 151... 4. When the first constraint member 161 is driven to move by the first eccentric block 151, the first constraint member 161 will slide linearly along the axis of the second constraint member 162 due to the constraint of the second constraint member 162. In this way, under the motion coupling of the circular motion of the eccentric end 141 and the linear sliding motion of the first constraint member 161, the first eccentric block 151 will perform a planar composite motion (i.e., swinging). At the same time, since the first constraint member 161 is movably set in the first receiving cavity 1511 and the other end of the second constraint member 162 is located in the first clearance cavity 1512, the first eccentric block 151 will not interfere with the first constraint member 161 and the second constraint member 162 when it performs a planar composite motion (i.e., swinging). This is because the motion envelope area generated by the first eccentric block 151 performing planar composite motion (i.e., oscillation) is smaller than the motion envelope area generated by the first eccentric block 151 being driven by the eccentric end 141 to perform circular motion around the drive shaft axis L. (When the first eccentric block 151 performs circular motion, the trajectory of any point on the first eccentric block 151 is a circle; while when the first eccentric block 151 performs planar composite motion (i.e., oscillation), its trajectory is a narrow region with a smaller area.)In calculation, the motion envelope area generated by the first eccentric block 151 being driven by the eccentric end 141 to perform circular motion around the drive shaft axis L is approximately 4πer (e is the eccentricity of the first eccentric block 151, and r is the radius of the first eccentric block 151), while the motion envelope area generated by the swing is approximately the sliding stroke of the first constraint member 161 multiplied by the width caused by the swing (2sin(∆φ / 2)), and ∆φ is usually less than 180°, so the motion envelope area generated by the swing is even smaller. Thus, under the condition that the internal space of the massager 1000 housing 20 is fixed, the safety of the moving parts and the inner wall of the massager 1000 housing 20 is increased. The full clearance; secondly, due to the constraint effect of the first constraint member 161 and the second constraint member 162, the displacement degree of freedom in the direction perpendicular to the axis of the second constraint member 162 is eliminated, effectively suppressing the undesigned shaking caused by bearing clearance or vibration excitation, reducing the probability of the first eccentric block 151 deviating from the motion trajectory of planar composite motion (i.e., oscillation). Therefore, through the reduction of the motion envelope area and the synergistic effect of the constraints of the first constraint member 161 and the second constraint member 162, the probability of the first eccentric block 151 colliding with the inner wall of the housing 20 of the massager 1000 during movement is reduced, thereby improving the reliability of the massager 1000.

[0029] In some embodiments, please refer to Figure 3 The first constraint member 161 includes a ball bearing 1611, and the second constraint member 162 includes a guide post 1621. The ball bearing 1611 is sleeved on the guide post 1621, and the ball bearing 1611 and the guide post 1621 are slidably engaged. The ball bearing 1611 is movably disposed in the first receiving cavity 1511. One end of the guide post 1621 is fixedly connected to the second mounting base 13, and the other end of the guide post 1621 extends into the first clearance cavity 1512.

[0030] In embodiments where both the orthographic projection shape of the first mounting base 12 and the orthographic projection shape of the first eccentric block 151 are circular, this can be achieved by setting... R≥S / 2+d+r+Δ (R is the radius of the first mounting base 12, S is the sliding stroke of the ball 1611 on the guide post 1621, d is the distance between the center of the first eccentric block 151 and the connection point between the first eccentric block 151 and the eccentric end 141, r is the radius of the first eccentric block 151, and Δ is the safety margin (Δ≥0.5mm (including manufacturing tolerance, thermal expansion, and dynamic shaking))).

[0031] In this embodiment, firstly, by setting the first constraint member 161 to include a ball bearing 1611 and the second constraint member 162 to include a guide post 1621, the ball bearing 1611 is fitted onto the guide post 1621 to form a sliding pair, thus strictly constraining the movement of the first eccentric block 151 to the axial direction of the guide post 1621, eliminating the displacement degree of freedom perpendicular to the axial direction of the guide post 1621. The spherical structure of the ball bearing 1611 has self-centering characteristics, which can compensate for minor assembly errors and effectively suppress undesigned shaking caused by bearing clearance or vibration excitation, reducing the risk of deviation of the swing trajectory of the first eccentric block 151. Secondly, the ball bearing 1611 and the guide post 1621 are in point contact, and the coefficient of friction is significantly lower than that of a surface contact sliding pair. During vibration, the frictional resistance is small, reducing the dissipation of vibration energy on the constraint component 16, allowing more inertial excitation force to be efficiently transmitted to the motor 11 housing 20, thereby improving the vibration output intensity.

[0032] In some embodiments, please refer to Figure 4 , Figure 4 A schematic diagram of the structure of a vibration device provided in some embodiments of this application (showing a second eccentric block). The eccentric block 15 further includes a second eccentric block 152, which includes at least one, and at least one second eccentric block 152 is fixedly connected to the first eccentric block 151.

[0033] In order to increase the mass of the eccentric block 15 without shifting the center of mass of the eccentric block 15 as a whole, in an embodiment where the orthographic projection of the first eccentric block 151 is circular, the orthographic projection shape and size of the second eccentric block 152 can be set to be the same as the orthographic projection shape and size of the first eccentric block 151. The position of the second eccentric block 152 can be set so that the orthographic projection of the second eccentric block 152 coincides with the orthographic projection of the first eccentric block 151.

[0034] The first eccentric block 151 undergoes a planar composite motion (i.e., oscillation) under the motion coupling of the circular motion of the eccentric end 141 and the linear sliding motion of the first constraint member 161. The center of mass of the eccentric block 15 generates a periodic acceleration synchronized with the rotational speed of the motor 11. The inertial force of the center of mass generated by this is transmitted to the housing 20 of the motor 11 through the eccentric shaft 14 and the drive shaft 111, and then transmitted to the housing 20 of the massager 1000 through the housing 20 of the motor 11, thereby forming a vibration output. Since F=m×a (F is the inertial force of the center of mass, a is the acceleration of the center of mass, and m is the mass of the eccentric block 15). Therefore, in this embodiment, by setting the eccentric block 15, a second eccentric block 152 is also included. The second eccentric block 152 is fixedly connected to the first eccentric block 151, thereby increasing the mass of the eccentric block 15. Under the condition that the speed of the motor 11 remains constant, the inertial force of the center of mass generated by its center of mass is linearly positively correlated with the mass of the eccentric block 15. The acceleration of the center of mass is determined by the geometric parameters of the mechanism and the speed, and is independent of the mass. Therefore, increasing the mass of the eccentric block 15 can improve the intensity of the vibration output.

[0035] In some embodiments, please refer to Figure 5 , Figure 5 A schematic diagram of the structure of a vibration device provided in some embodiments of this application (showing a third eccentric block). The eccentric block 15 further includes a third eccentric block 153, the third eccentric block 153 including at least one, the at least one third eccentric block 153 being fixedly connected to the first eccentric block 151 and located at the edge of the first eccentric block 151.

[0036] The first eccentric block 151 undergoes a planar composite motion (i.e., oscillation) under the coupled motion of the circular motion of the eccentric end 141 and the linear sliding motion of the first constraint member 161. The center of mass of the eccentric block 15 generates a periodic acceleration synchronized with the rotational speed of the motor 11. The inertial force of the center of mass generated by this is transmitted to the housing 20 of the motor 11 through the eccentric shaft 14 and the drive shaft 111, and then transmitted to the housing 20 of the massager 1000 through the housing 20 of the motor 11, thereby forming a vibration output. Since F=m×a (F is the inertial force of the center of mass, a is the acceleration of the center of mass, and m is the mass of the eccentric block 15). Therefore, in this embodiment, the eccentric block 15 also includes a third eccentric block 153. The third eccentric block 153 is fixedly connected to the first eccentric block 151 and is located at the edge of the first eccentric block 151. This makes the center of mass (center of mass) of the eccentric block 15 distributed towards the edge of the first eccentric block 151, thereby increasing the distance d between the center of mass of the eccentric block 15 and the connection point (the connection point between the eccentric block 15 and the eccentric end 141). Since the distance d is proportional to the acceleration a of the center of mass, increasing the distance d can increase the acceleration a of the center of mass. At the same time, by setting the third eccentric block 153, the mass of the eccentric block 15 can be increased. Therefore, by increasing the combined effect of m and a, the inertial force of the center of mass can be increased, thereby improving the intensity of the vibration output.

[0037] In some embodiments, please refer to Figure 6 , Figure 6 A schematic diagram of the structure of a vibration device provided in some embodiments of this application (showing a fourth eccentric block). The eccentric block 15 further includes a fourth eccentric block 154, which includes at least one, and at least one of the fourth eccentric blocks 154 is rotatably connected to the first eccentric block 151.

[0038] The fourth eccentric block 154 and the first eccentric block 151 can be connected by a smooth bolt 1541 and a nut. Figure 6 (Not shown in the image) A rotatable connection is achieved. When the smooth bolt 1541 and the nut are unlocked, the fourth eccentric block 154 can rotate relative to the first eccentric block 151. When the smooth bolt 1541 and the nut are locked, the fourth eccentric block 154 cannot rotate relative to the first eccentric block 151.

[0039] The first eccentric block 151 undergoes a planar composite motion (i.e., oscillation) under the motion coupling of the circular motion of the eccentric end 141 and the linear sliding motion of the first constraint member 161. The center of mass of the eccentric block 15 generates a periodic acceleration synchronized with the rotational speed of the motor 11. The inertial force (F) generated by this is transmitted to the housing 20 of the motor 11 via the eccentric shaft 14 and the drive shaft 111, and then to the housing 20 of the massager 1000, thereby forming a vibration output. Since F = m × a (F is the inertial force of the center of mass, a is the acceleration of the center of mass, and m is the mass of the eccentric block 15), the vibration output is generated. Therefore, in this embodiment, the eccentric block 15 also includes a fourth eccentric block 154. The fourth eccentric block 154 is rotatably connected to the first eccentric block 151. So, by rotating the fourth eccentric block 154, the position of the fourth eccentric block 154 on the first eccentric block 151 can be adjusted, thereby adjusting the position of the center of mass of the eccentric block 15 as a whole. This allows the distance d between the center of mass of the eccentric block 15 and the connection point (the connection point between the eccentric block 15 and the eccentric end 141) to be changed. Since the distance d is directly proportional to the acceleration a of the center of mass, changing the distance d can change the acceleration a of the center of mass, thereby changing the inertial force of the center of mass and thus changing the intensity of the vibration output.

[0040] In some embodiments, please refer to Figure 7 , Figure 7 This is a schematic diagram of the structure of a vibration device provided in some embodiments of this application (showing a reduction gearbox). It also includes a reduction gearbox 17, which is disposed between the motor 11 and the first mounting base 12. The input shaft of the reduction gearbox 17 is fixedly connected to the drive shaft 111, and the output shaft of the reduction gearbox 17 is fixedly connected to the eccentric shaft 14.

[0041] In this embodiment, in scenarios requiring low-frequency, high-amplitude massage, a reduction gearbox 17 is provided to enable the motor 11 to operate in a high-efficiency speed range, while providing sufficient torque to drive the large-mass eccentric block 15.

[0042] Please refer to Figure 8-9 , Figure 8 This is a schematic diagram of the structure of a massager provided in some embodiments of this application. Figure 9 This is a schematic diagram of the structure of a massager provided in some other embodiments of this application. An embodiment of this application provides a massager 1000, including a housing 20 and a vibration device 10 provided in any of the above embodiments. The housing 20 has a massage portion 21 that contacts a part 21 to be massaged, and the massage portion 21 has a second receiving cavity 22. The vibration device 10 is disposed within the second receiving cavity 22.

[0043] The housing 20 is used to house the various components that make up the massager 1000, such as the vibration device 10, and the housing 20 can protect the various components in the massager 1000.

[0044] The housing 20 can be ergonomically designed so that it can be comfortably held in the user's hand without sharp or pointed edges. The housing 20 can be made of plastic materials, such as PC (polycarbonate) or ABS (acrylonitrile butadiene styrene), or it can be made of flexible materials, such as silicone or liquid silicone.

[0045] The housing 20 can be designed to be waterproof or splash-proof, for example, with a protection rating of IP24.

[0046] Part or all of the housing 20 may be covered with silicone resin that has tactile properties.

[0047] The housing 20 may also be provided with a circuit control board that is electrically connected to the motor 11 and used to control the motor 11. The circuit control board is provided with buttons that are electrically connected to the circuit control board, and the buttons protrude out of the housing 20 in the direction of the outside of the housing 20.

[0048] The first eccentric block 151 performs a planar composite motion (i.e., oscillation) under the motion coupling of the circular motion of the eccentric end 141 and the linear sliding motion of the first constraint member 161. The center of mass of the eccentric block 15 generates a periodic acceleration synchronized with the rotational speed of the motor 11. The inertial force of the center of mass generated by this is transmitted to the housing 20 of the motor 11 through the eccentric shaft 14 and the drive shaft 111, and then transmitted to the housing 20 of the massager 1000 through the housing 20 of the motor 11, causing the massage part 21 to vibrate and thus massage the massage part 21.

[0049] In this embodiment, since the vibration device 10 can reduce the probability of the first eccentric block 151 colliding with the inner wall of the housing 20 of the massager 1000 when it moves, setting it in the second receiving cavity 22 can improve the reliability of the massager 1000.

[0050] In some embodiments, please refer to Figure 10 , Figure 10 This is a schematic diagram of the structure of a massager provided in some embodiments of this application (showing a first reinforcing rib). It also includes a first reinforcing rib 23, which is sleeved on the motor 11 and fixedly connected to both the motor 11 and the inner wall of the second receiving cavity 22.

[0051] There may be one or more first reinforcing ribs 23. In embodiments where there are multiple first reinforcing ribs 23, the multiple first reinforcing ribs 23 may be evenly sleeved on the motor 11 along the axial direction X of the motor.

[0052] The first reinforcing rib 23 is fixedly connected to the inner wall of the motor 11 and the second receiving cavity 22, respectively. The connection can be non-removable, such as by welding, riveting or injection molding.

[0053] In this embodiment, by sleeved the first reinforcing rib 23 on the motor 11 and fixedly connected to the inner wall of the motor 11 and the second receiving cavity 22 respectively, the strength of the shell wall of the housing 20 located in the second receiving cavity 22 is increased by the strengthening effect of the first reinforcing rib 23, thereby reducing the probability of vibration transmission failure of the motor 11.

[0054] In some embodiments, please refer to Figure 11-14 , Figure 11 A schematic diagram of the structure of a massager provided in some embodiments of this application (showing a first massage structure). Figure 12 A schematic diagram of the structure of a massager provided for other embodiments of this application (showing a first massage structure). Figure 13 A schematic diagram of the structure of a massager provided in some embodiments of this application (showing a second massage structure). Figure 14 The following is a schematic diagram of the structure of a massager provided in some other embodiments of this application (showing a second massage structure). The massage part 21 is provided with a plurality of first massage structures 211 and / or the massage part 21 is provided with a plurality of second massage structures 212.

[0055] The surface of the massage part 21 may be provided with a number of first massage structures 211, and the surface of the massage part 21 may also be provided with a number of second massage structures 212; the surface of the massage part 21 may also be provided with a number of first massage structures 211 and a number of second massage structures 212.

[0056] In this embodiment, by providing a first massage structure 211 and a second massage structure 212 on the massage part 21, when the massage part 21 vibrates, the first massage structure 211 and the second massage structure 212 can better massage and stimulate the skin surface of the massage part 21.

[0057] Please continue to refer to this. Figure 12 and 14 Along the radial direction Y of the motor, the thickness of the first massage structure 211 is T1, satisfying 5mm≤T1≤20mm; or along the radial direction Y of the motor, the thickness of the second massage structure 212 is T2, satisfying 10mm≤T2≤30mm.

[0058] T1 and T2 can be the same or different.

[0059] T1 can be 5mm, 10mm, 15mm, 20mm, etc., or within a range consisting of any two of the above values.

[0060] T2 can be 10mm, 15mm, 20mm, 25mm, 30mm, etc., or within a range consisting of any two of the above values.

[0061] In this embodiment, when the thickness of the first massage structure 211 and the second massage structure 212 protruding from the massage part 21 is large, the massage stimulation intensity applied to the massage part 21 by the first massage structure 211 and the second massage structure 212 during massage will be too large, resulting in discomfort during the massage process. Therefore, by setting 5mm≤T1≤20mm and 10mm≤T2≤30mm, the first massage structure 211 and the second massage structure 212 have appropriate dimensions, thereby improving the comfort of the massage process.

[0062] Both the first massage structure 211 and the second massage structure 212 are made of flexible material with a hardness range of Shore A 00A-60A.

[0063] The Shore hardness of the flexible material can be 00A, 10A, 20A, 30A, 40A, 50A, 60A, or within the range of any two of the above values. The flexible material can be one or more of TPE (thermoplastic elastomer), POE (polyolefin elastomer), PVC (polyvinyl fluoride), silicone, and liquid silicone.

[0064] The Shore hardness of the flexible material constituting the first massage structure 211 can be the same as or different from the Shore hardness of the flexible material constituting the second massage structure 212.

[0065] In this embodiment, by setting the hardness range of the flexible material to Shore A 00A-60A, both the first massage structure 211 and the second massage structure 212 have a low Shore A hardness, which in turn results in a low elastic modulus of the first massage structure 211 and the second massage structure 212. Therefore, the softer the first massage structure 211 and the second massage structure 212 are, the easier they are to deform. As a result, during use, the first massage structure 211 and the second massage structure 212 are more likely to deform according to the shape of the part to be massaged 21, so that the first massage structure 211 and the second massage structure 212 can better fit the skin of the part to be massaged 21, further improving the massage effect.

[0066] Please continue to refer to this. Figure 12 Along the axial direction X of the motor, several groups of first massage structures 211 are spaced apart. Each first massage structure 211 includes several first protrusions 2111 spaced apart in the circumferential direction along the drive shaft axis L.

[0067] Several groups of first massage structures 211 can be set at equal intervals along the motor axial direction X, or they can be set at unequal intervals along the motor axial direction X.

[0068] In an embodiment where several groups of first massage structures 211 are equally spaced along the axial direction X of the motor, the distance between two adjacent groups of first massage structures 211 is D1, satisfying 2mm≤D1≤5mm. D1 can be 2mm, 3mm, 4mm, 5mm, etc., or within the range of any two of the above values.

[0069] By setting the first massage structures 211 at equal intervals along the axial direction X of the motor, and setting 2mm≤D1≤5mm, the spacing between the first massage structures 211 is reasonably set, so that more first massage structures 211 can be evenly distributed on the limited area of ​​the massage part 21, thereby further improving the massage effect.

[0070] The plurality of first protrusions 2111 can be equally spaced along the circumferential direction of the drive shaft axis L, or they can be unequally spaced along the circumferential direction of the drive shaft axis L.

[0071] In an embodiment where a plurality of first protrusions 2111 are equally spaced along the circumferential direction of the drive shaft axis L, the distance between two adjacent first protrusions 2111 is D2, satisfying 1mm≤D2≤4mm. D2 can be 1mm, 2mm, 3mm, 4mm, etc., or within a range consisting of any two of the above values.

[0072] In this embodiment, by arranging the first massage structures 211 at intervals along the axial direction X of the motor, the first massage structures 211 are more rationally distributed on the massage part 21, so that the first massage structures 211 can provide a comprehensive massage to the massage part 21. At the same time, by arranging the first massage structure 211 into a number of spaced first protrusions 2111, different contact effects can be generated during the massage process through the first protrusions 2111. Therefore, by arranging the first massage structure 211 composed of first protrusions 2111, the massage effect can be improved.

[0073] In some embodiments, in a projection plane perpendicular to the motor axial direction X, the orthographic projection shape of the first protrusion 2111 can be one or more of a rectangle, a square, a triangle, and a circle.

[0074] In this embodiment, by setting the orthographic projection shape of the first protrusion 2111 to include a variety of shapes, the outer contour of the first protrusion 2111 is defined by the variety of shapes, so that the first protrusion 2111 can produce different contact effects on the skin surface of the massage area 21 during the massage process, thereby further improving the massage effect.

[0075] Please continue to refer to this. Figure 14 Along the axial direction X of the motor, several groups of the second massage structure 212 are spaced apart. The second massage structure 212 includes a second protrusion 2121 that extends uninterruptedly in the circumferential direction along the drive shaft axis L.

[0076] Several sets of second massage structures 212 can be arranged at equal intervals along the motor axial direction X, or they can be arranged at unequal intervals along the motor axial direction X.

[0077] In an embodiment where several groups of second massage structures 212 are equally spaced along the axial direction X of the motor, the distance between two adjacent groups of second massage structures 212 is D3, satisfying 2mm≤D3≤5mm. D3 can be 2mm, 3mm, 4mm, 5mm, or within the range of any two of the above values.

[0078] By setting the second massage structures 212 at equal intervals along the motor axial direction X, and setting the spacing between them to 2mm≤D3≤5mm, the spacing between the second massage structures 212 is reasonably set, so that more second massage structures 212 can be distributed on the limited area of ​​the massage part 21, thereby further improving the massage effect.

[0079] In this embodiment, by arranging the second massage structures 212 at intervals along the axial direction of the motor 11, the second massage structures 212 are more rationally distributed on the massage part 21, so that the second massage structures 212 can provide a comprehensive massage to the massage part 21. At the same time, by setting the second massage structure 212 to include a second protrusion 2121 that extends continuously in the circumferential direction along the drive shaft axis L, the second protrusion 2121 is a continuous and uninterrupted structure, so that the second protrusion 2121 can be spirally arranged along the axial direction of the massage part 21, thereby allowing the second protrusion 2121 to better contact the massage part 21 in the circumferential direction. The second protrusion 2121 can also produce different contact effects during the massage process. Therefore, by setting the second massage structure 212 composed of the second protrusion 2121, the massage effect can be improved.

[0080] In some embodiments, the shape of the orthographic projection of the second protrusion 2121 in a projection plane perpendicular to the axial direction X of the motor can be elongated or wavy.

[0081] The orthographic projection of the second protrusion 2121 is elongated, or the second protrusion 2121 can be a straight line segment.

[0082] The orthographic projection of the second protrusion 2121 is wavy. The second protrusion 2121 can be composed of several curved segments connected in sequence, or it can be composed of several arc-shaped segments connected in sequence.

[0083] In this embodiment, by setting the orthographic projection shape of the second protrusion 2121 to include a variety of shapes, the outer contour of the second protrusion 2121 is defined by the variety of shapes, so that the second protrusion 2121 can produce different contact effects on the skin surface of the massage part 21 during the massage process, thereby further improving the massage effect.

[0084] Please refer to Figure 15 , Figure 15 This is a schematic diagram of the structure of a massager provided in some embodiments of this application. An embodiment of this application provides a massager 1000, including a housing 20 and a vibration device 10 provided in any of the above embodiments. The housing 20 has a massage part 21 that contacts a part 21 to be massaged and a handheld part 24 for the user to hold. The massage part 21 is rotatably connected to the handheld part, and the massage part 21 has a second receiving cavity 22. The vibration device 10 is disposed within the second receiving cavity 22.

[0085] By providing a handheld part 24 for the user to hold, the user can better grip the massager 1000 when using it. At the same time, by rotatably connecting the handheld part 24 to the massage part 21, the massage part 21 can rotate relative to the handheld part 24. This allows the angle of the massage part 21 to be adjusted by rotating it, so that the position of the massage part 21 can better contact the part to be massaged, further improving the massage effect for the user.

[0086] The handheld part 24 can be rotatably connected to the massage part 21 via the connector 25. The connector 25 can be a malleable plastic part.

[0087] The handheld part 24 and the massage part 21 are rotatably connected by using a malleable plastic component. Since the malleable plastic component can maintain its bent state after being bent, the massage part 21 can maintain its position after the angle is adjusted, making it convenient for the user to use.

[0088] In this embodiment, since the vibration device 10 can reduce the probability of the first eccentric block 151 colliding with the inner wall of the housing 20 of the massager 1000 during movement, placing it in the second receiving cavity 22 can improve the reliability of the massager 1000. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0089] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A vibration device, characterized in that, include: An electric motor having a drive shaft; A first mounting base is disposed on the motor and fixedly connected to the motor. A second mounting base is fixedly connected to the first mounting base. An eccentric shaft, one side of which is fixedly connected to the drive shaft, and an eccentric end is provided on the other side of the eccentric shaft; An eccentric block, the eccentric block including a first eccentric block, the first eccentric block being fixedly connected to the eccentric end, the first eccentric block being provided with a first receiving cavity and a first clearance cavity; The constraint assembly includes a first constraint member and a second constraint member. The first constraint member is sleeved on the second constraint member and the first constraint member and the second constraint member are slidably engaged. The first constraint member is movably disposed in the first receiving cavity. One end of the second constraint member is fixedly connected to the second mounting base, and the other end of the second constraint member extends into the first clearance cavity.

2. The vibration device according to claim 1, characterized in that, The first constraint member includes a ball bearing, and the second constraint member includes a guide post. The ball bearing is sleeved on the guide post and slides with the guide post. The ball bearing is movably disposed in the first receiving cavity. One end of the guide post is fixedly connected to the second mounting base, and the other end of the guide post extends into the first clearance cavity.

3. The vibration device according to claim 1, characterized in that, The eccentric block further includes a second eccentric block, which includes at least one second eccentric block, and at least one second eccentric block is fixedly connected to the first eccentric block.

4. The vibration device according to claim 1, characterized in that, The eccentric block further includes a third eccentric block, which includes at least one third eccentric block. The at least one third eccentric block is fixedly connected to the first eccentric block and is located at the edge of the first eccentric block.

5. The vibration device according to claim 1, characterized in that, The eccentric block further includes a fourth eccentric block, which includes at least one fourth eccentric block, and at least one of the fourth eccentric blocks is rotatably connected to the first eccentric block.

6. The vibration device according to claim 1, characterized in that, It also includes a gearbox, which is disposed between the motor and the first mounting base. The input shaft of the gearbox is fixedly connected to the drive shaft, and the output shaft of the gearbox is fixedly connected to the eccentric shaft.

7. A massager, characterized in that, include: A housing having a massage portion that contacts the area to be massaged, the massage portion having a second receiving cavity; The vibration device as described in any one of claims 1-6, wherein the vibration device is disposed within the second receiving cavity.

8. The massager according to claim 1, characterized in that, It also includes a first reinforcing rib, which is sleeved on the motor and fixedly connected to the motor and the inner wall of the second receiving cavity, respectively.

9. The massager according to claim 1, characterized in that, The massage part is provided with several sets of first massage structures and / or the massage part is provided with several sets of second massage structures.

10. A massager, characterized in that, include: A housing having a massage part that contacts the area to be massaged and a handheld part held by the user, the massage part being rotatably connected to the handheld part, and the massage part having a second receiving cavity; The vibration device as described in any one of claims 1-6, wherein the vibration device is disposed within the second receiving cavity.

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