A massage movement

Abstract

The present invention provides a massage movement, comprising: a housing, a drive device, a first connecting arm, a second connecting arm, a third connecting arm, and a fourth connecting arm; the drive device comprises a motor and a first eccentric shaft and a second eccentric shaft that can each perform cam motion, the first eccentric shaft and the second eccentric shaft each comprising an upper eccentric shaft segment and a lower eccentric shaft segment, the first connecting arm rotatably connected to the lower eccentric shaft segment of the first eccentric shaft; the second connecting arm rotatably connected to the lower eccentric shaft segment of the second eccentric shaft, the second connecting arm and the first connecting arm being rotatably connected to each other; the third connecting arm rotatably connected to the upper eccentric shaft segment of the first eccentric shaft; the fourth connecting arm rotatably connected to the upper eccentric shaft segment of the second eccentric shaft, the fourth connecting arm and the third connecting arm being rotatably connected to each other. As a result, the massage movement can freely change the shape and position of the massage head according to the designer's ideas and for specific body parts, allowing for flexible design of massage movements with multiple different functions.

Description

Technical Field

[0001] The present invention relates to the technical field of massagers, and in particular to a massage core. Background Art

[0002] With the development of massager industry technology, a variety of massage devices for relieving human fatigue have emerged on the market, such as massage shawls for massaging shoulders, necks, waists and backs, massage lumbar cushions and other massage products.

[0003] In the related art, for example, Chinese invention patent application CN 107397663 A discloses a shoulder massage mechanism. When the mechanism is in operation, the eccentric shaft of the kneading gear drives the second massage head to rotate, and the first massage head performs a compound motion of left and right swinging and forward and backward movement under the action of the eccentric shaft and the limit pin as a fulcrum. When the first massage head, the limit pin, and the second massage head are in a straight line, the distance between the first massage head and the second massage head is at its maximum or minimum distance, and a kneading effect is achieved between the two massage heads, so that the massage head group can simultaneously massage and knead the shoulders. The distance between the two groups of reciprocating first massage heads will also change to achieve a kneading effect; thereby, the massage and kneading of the shoulders are satisfied, and the kneading stroke is increased, thereby enhancing the kneading effect. Another example is a massage movement disclosed in Chinese invention patent CN 208974526 U. By setting a kneading massage component and a massaging massage component, the kneading massage component performs kneading massage, while the massaging massage component performs massage on the cervical vertebrae, spine and other parts. It can not only realize traditional massage methods, but also massage the cervical vertebrae and other parts, allowing users to experience different massage effects.

[0004] However, the above-mentioned massage mechanism converts rotary motion into linear motion by providing an eccentric on the rotating shaft and installing a guide component on the crank on the rotating shaft to make the movement linearly in a specific direction. This design makes the massage mechanism structure more complicated, inconvenient to assemble, and high in manufacturing cost. Summary of the Invention

[0005] The present invention aims to at least partially address one of the technical problems encountered in the aforementioned technologies. To this end, one objective of the present invention is to provide a massage movement with a simple structure, ease of assembly, reduced costs, and maximum weight reduction. Furthermore, the shape and position of the massage heads can be freely changed to suit specific body parts, allowing for flexible design of various massage movements with different functions.

[0006] To achieve the above objectives, an embodiment of the present invention provides a massage mechanism, which includes:

[0007] case;

[0008] a drive device, the drive device comprising a motor and a first eccentric shaft and a second eccentric shaft driven by the motor, the motor being disposed in the housing, the first eccentric shaft and the second eccentric shaft being both disposed on the housing and capable of performing cam motion, the first eccentric shaft and the second eccentric shaft each comprising an upper eccentric shaft segment and a lower eccentric shaft segment, the upper eccentric shaft segment being disposed on the lower eccentric shaft segment;

[0009] a first connecting arm, the first connecting arm being rotatably connected to the lower eccentric shaft segment of the first eccentric shaft, and the first connecting arm being provided with a first massage part;

[0010] a second connecting arm, the second connecting arm being rotatably connected to the lower eccentric shaft section of the second eccentric shaft, the second connecting arm being provided with a second massage portion, the second connecting arm being swingably connected to the first connecting arm to form a swing constraint for both;

[0011] a third connecting arm, the third connecting arm being rotatably connected to the upper eccentric shaft segment of the first eccentric shaft, and the third connecting arm being provided with a third massage part;

[0012] a fourth connecting arm, the fourth connecting arm being rotatably connected to the upper eccentric shaft segment of the second eccentric shaft, the fourth connecting arm being provided with a fourth massage portion, the fourth connecting arm being swingably connected to the third connecting arm to form a swing constraint on the fourth connecting arm;

[0013] When the motor drives the first eccentric shaft and the second eccentric shaft to rotate, the first connecting arm and the second connecting arm restrain each other at the connected position, so that the first connecting arm drives the massage head of the first massage part to perform a compound motion of left-right swinging and back-and-forth movement, and the second connecting arm drives the massage head of the second massage part to perform a compound motion of left-right swinging and back-and-forth movement. The third connecting arm and the fourth connecting arm restrain each other at the connected position, so that the third connecting arm drives the massage head of the third massage part to perform a compound motion of left-right swinging and back-and-forth movement, and the fourth connecting arm drives the massage head of the fourth massage part to perform a compound motion of left-right swinging and back-and-forth movement.

[0014] According to a massage movement of an embodiment of the present invention, when the massage movement is working, the motor drives the first eccentric shaft and the second eccentric shaft to rotate synchronously. When the first eccentric shaft rotates, the massage head of the first connecting arm and the massage head of the third connecting arm are driven to rotate, and when the second eccentric shaft rotates, the massage head of the second connecting arm and the fourth massage head are driven to rotate. In this process, since the second connecting arm and the first connecting arm are connected to each other in a swingable manner, the connection point of the first connecting arm and the second connecting arm will restrict the rotational motion of the two, and the rotational motion will be converted into a linear motion, so that the massage heads of the first connecting arm and the second connecting arm perform a compound motion of left and right swinging and forward and backward motion; similarly, since the third connecting arm and the fourth connecting arm are connected to each other in a swingable manner, the connection point of the third connecting arm and the fourth connecting arm will restrict the rotational motion of the two, and the rotational motion will be converted into a linear motion, so that The massage heads of the third connecting arm and the fourth connecting arm perform a compound motion of left and right swinging and forward and backward movement; in this way, the guide components can be removed, and the first connecting arm and the second connecting arm are connected, and the third connecting arm and the fourth connecting arm are connected to each other to constrain each other so that the massage heads are maintained in a specific direction. In the prior art, guide components, such as guide grooves, are used to convert the rotational motion of the two connecting arms into linear motion. Therefore, the structure of the above-mentioned massage movement is simplified, which is convenient for assembly, reduces costs, and can maximize the reduction of product weight; in addition, a massage part can be set on each connecting arm, and different massage forms can be designed for specific parts of the human body and the position of the massage head can be changed to design a variety of massage movements. In other words, according to the designer's ideas, the shape and position of the massage head can be freely changed for specific parts of the body, and the movement can be flexibly used to design massage movements with a variety of different functions.

[0015] In addition, the massage movement according to the above embodiment of the present invention may also have the following additional technical features:

[0016] Optionally, the first connecting arm is rotatably sleeved on the lower eccentric shaft section of the first eccentric shaft; the second connecting arm is rotatably sleeved on the lower eccentric shaft section of the second eccentric shaft.

[0017] Furthermore, the middle position of the first connecting arm can be rotatably sleeved on the lower eccentric shaft segment of the first eccentric shaft, one end of the first connecting arm is provided with the first massage part, and the other end is connected to the second connecting arm so as to be swingable with each other; the middle position of the second connecting arm can be rotatably sleeved on the lower eccentric shaft segment of the second eccentric shaft, one end of the second connecting arm is provided with the second massage part, and the other end is connected to the first connecting arm so as to be swingable with each other.

[0018] Optionally, one end of the third connecting arm is provided with the third massage part, and the other end is connected to the fourth connecting arm so as to be swingable; one end of the fourth connecting arm is provided with the fourth massage part, and the other end is connected to the third connecting arm so as to be swingable.

[0019] Optionally, the first connecting arm and the second connecting arm are connected by a first bearing so that the second connecting arm and the first connecting arm can swing relative to each other around their connection position; the third connecting arm and the fourth connecting arm are connected by a second bearing so that the third connecting arm and the fourth connecting arm can swing relative to each other around their connection position.

[0020] Optionally, the driving device includes two sets of transmission gears, a worm is provided at both ends of the motor, the two sets of transmission gears are connected to the two worms in a one-to-one manner, and the first eccentric shaft and the second eccentric shaft are arranged on the two sets of transmission gears in a one-to-one manner.

[0021] Furthermore, the transmission gear includes a first gear, a second gear and a third gear, the second gear and the third gear are jointly constructed as a worm gear, the second gear is engaged with the worm for transmission, the third gear is engaged with the first gear for transmission, and the first eccentric shaft or the second eccentric shaft is provided on the rotating shaft of the first gear.

[0022] Furthermore, the rotating shaft of the first gear is inserted into the eccentric hole of the lower eccentric shaft section of the first eccentric shaft or the second eccentric shaft and extends into the eccentric hole of the upper eccentric shaft section.

[0023] Optionally, the top edges of the upper eccentric shaft section of the first eccentric shaft and the upper eccentric shaft section of the second eccentric shaft are each provided with a mounting protrusion, the third connecting arm is rotatably sleeved on the mounting protrusion of the first eccentric shaft, and the fourth connecting arm is rotatably sleeved on the mounting protrusion of the second eccentric shaft.

[0024] Furthermore, the mounting protrusion is arranged adjacent to the eccentric hole of the upper eccentric shaft segment.

[0025] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a structural schematic diagram of a massage mechanism according to an embodiment of the present invention;

[0027] Figure 2 is an exploded schematic diagram of a massage mechanism according to an embodiment of the present invention;

[0028] Figure 3 is a schematic diagram of the interior of a housing according to an embodiment of the present invention;

[0029] Figure 4 is a schematic diagram of a third connecting arm and a fourth connecting arm of a massage mechanism according to another embodiment of the present invention;

[0030] Figure 5 is a schematic diagram of a third connecting arm and a fourth connecting arm of a massage mechanism according to another embodiment of the present invention;

[0031] Figure 6 2 is a schematic diagram of a third connecting arm and a fourth connecting arm of a massage mechanism according to another embodiment of the present invention;

[0032] Description of reference numerals:

[0033] Shell 1;

[0034] Driving device 2, motor 21, worm 211, first eccentric shaft 22, upper eccentric shaft section (221, 231), lower eccentric shaft section (222, 232), mounting protrusion 223, second eccentric shaft 23, transmission gear 24, first gear 241, second gear 242, third gear 243;

[0035] First connecting arm 3, first massage part 31;

[0036] Second connecting arm 4, second massage part 41;

[0037] A third connecting arm 5 and a third massage part 51;

[0038] The fourth connecting arm 6 and the fourth massage part 61 . DETAILED DESCRIPTION

[0039] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0040] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0041] The following is combined with Figures 1-6 A massage movement provided by the present invention is described in detail. The massage movement includes: a housing 1, a driving device 2, a first connecting arm 3, a second connecting arm 4, a third connecting arm 5 and a sixth connecting arm 6.

[0042] Specifically, the driving device 2 includes a motor 21 and a first eccentric shaft 22 and a second eccentric shaft 23 driven by the motor 21. The motor 21 is arranged in the housing 1. The first eccentric shaft 21 and the second eccentric shaft 22 are both arranged on the housing 1 and can each perform cam motion; the first eccentric shaft 22 and the second eccentric shaft 23 both include an upper eccentric shaft segment (221, 231) and a lower eccentric shaft segment (222, 232), and the upper eccentric shaft segment (221, 231) is arranged on the lower eccentric shaft segment (222, 232).

[0043] The first connecting arm 3 is rotatably connected to the lower eccentric shaft segment 222 of the first eccentric shaft 22, and the first connecting arm 3 is provided with a first massage part 31; the second connecting arm 4 is rotatably connected to the lower eccentric shaft segment 232 of the second eccentric shaft 23, and the second connecting arm 4 is provided with a second massage part 41, and the second connecting arm 4 and the first connecting arm 3 are swingably connected to each other to form a swing constraint on the two; the third connecting arm 5 is rotatably connected to the upper eccentric shaft segment 221 of the first eccentric shaft 22, and the third connecting arm 5 is provided with a third massage part 51; the fourth connecting arm 6 is rotatably connected to the upper eccentric shaft segment 231 of the second eccentric shaft 23, and the fourth connecting arm 6 is provided with a fourth massage part 61, and the fourth connecting arm 6 and the third connecting arm 5 are swingably connected to each other to form a swing constraint on the two.

[0044] When the motor 21 drives the first eccentric shaft 22 and the second eccentric shaft 23 to rotate, the first connecting arm 3 and the second connecting arm 4 restrain each other at the connected position, so that the first connecting arm 3 drives the massage head of the first massage part 31 to perform a compound motion of left and right swinging and back and forth movement, and the second connecting arm 4 drives the massage head of the second massage part 41 to perform a compound motion of left and right swinging and back and forth movement, and the third connecting arm 5 and the fourth connecting arm 6 restrain each other at the connected position, so that the third connecting arm 5 drives the massage head of the third massage part 51 to perform a compound motion of left and right swinging and back and forth movement, and the fourth connecting arm 6 drives the massage head of the fourth massage part 61 to perform a compound motion of left and right swinging and back and forth movement.

[0045] That is to say, when the motor 21 drives the first eccentric shaft 22 and the second eccentric shaft 23 to perform cam motion respectively, for the first connecting arm 3 and the second connecting arm 4, the first connecting arm 3 can drive the massage head of the first massage part 31 to rotate, and the second connecting arm 4 can drive the massage head of the second massage part 41 to rotate. Since the second connecting arm 4 and the first connecting arm 3 are connected to each other in a swingable manner, the connection point between the second connecting arm 4 and the first connecting arm 3 restricts the two to each other, and the connection point can move back and forth in a straight line, so that the massage heads of the first massage part 31 and the second massage heads of the second massage part 41 perform a compound motion of left and right swinging and forward and backward movement, so that the first massage part 31 and the second massage part 41 can knead and massage the massage positions respectively. As for the third connecting arm 5 and the fourth connecting arm 6, the third connecting arm 5 can drive the massage head of the third massage part 51 to rotate, and the fourth connecting arm 6 can drive the massage head of the fourth massage part 61 to rotate; because the fourth connecting arm 6 and the third connecting arm 5 are connected to each other in a swingable manner, the connection point of the fourth connecting arm 6 and the third connecting arm 5 restricts the two to each other, and the connection point can move back and forth in a straight line, so that the massage heads of the third massage part 51 and the massage heads of the fourth massage part 61 can perform a compound motion of left and right swinging and forward and backward movement, so that the massage heads of the third massage part 51 and the fourth massage part 61 can jointly realize kneading and pushing massage actions.

[0046] In other words, the first eccentric shaft 22 and the second eccentric shaft 23 both rotate, but because of the connection point between the first connecting arm 3 and the second connecting arm 4, their rotational motion is mutually constrained, resulting in an up-down, left-right swing, similar to the lever structure of scissors, where the connection point is the fulcrum and the two rotation axes are the points of force. Similarly, because of the connection point between the third connecting arm 5 and the fourth connecting arm 6, their rotational motion is mutually constrained, resulting in an up-down, left-right swing. In the prior art, the massage head converts rotational motion into linear motion through the cooperation of guide components. The first connecting arm 3 and the second connecting arm 4 and the third connecting arm 5 and the sixth connecting arm 6 can be two sets stacked one on top of the other.

[0047] Therefore, according to the massage movement of the embodiment of the present invention, when the massage movement is working, the motor 21 drives the first eccentric shaft 22 and the second eccentric shaft 23 to rotate synchronously, and the first eccentric shaft 22 drives the massage head of the first connecting arm 3 to rotate when rotating, and the second eccentric shaft 23 drives the massage head of the second connecting arm 4 to rotate when rotating, and the rotation directions of the first eccentric shaft 22 and the second eccentric shaft 23 are opposite, which can realize the kneading massage action of the massage heads rotating on both sides (i.e., the first connecting arm 3 and the second connecting arm 4). In this process, because the second connecting arm 4 and the first connecting arm 3 can be connected to each other in a swinging manner, the connection point of the first connecting arm 3 and the second connecting arm 4 will mutually restrict the rotational motion of the two, and convert the rotational motion into linear motion, so that the massage of the first connecting arm 3 and the second connecting arm 4 can be realized. The head performs a compound motion of left and right swinging and forward and backward movement, and the massage heads on both sides work simultaneously, which can satisfy the needs of massaging two positions of the shoulder and neck separately at the same time; similarly, because the third connecting arm 5 and the fourth connecting arm 6 are connected to each other so as to be swingable, the connection point of the third connecting arm 5 and the fourth connecting arm 6 will mutually restrict the rotational motion of the two, and convert the rotational motion into linear motion, so that the massage heads of the third connecting arm 5 and the fourth connecting arm 6 perform a compound motion of left and right swinging and forward and backward movement; in this way, the guide component can be removed, and the first connecting arm 3 is connected to the second connecting arm 4, and the third connecting arm 5 is connected to the fourth connecting arm 6 to restrict each other so that the massage head is maintained in a specific direction, thereby simplifying the structure of the massage movement, facilitating assembly, reducing costs, and maximizing product weight reduction.

[0048] In addition, each connecting arm can be provided with a massage part, and different massage forms can be designed for specific parts of the human body and a variety of massage movements can be designed by changing the position of the massage head. Figure 1 The massage mechanism in the massager can massage three positions simultaneously. For example, the third massage part 51 and the fourth massage part 61 massage the neck together, and the first massage part 31 and the second massage part 41 massage the shoulders on both sides of the neck respectively. Figure 4 The third connecting arm 5 and the fourth connecting arm 6 can change the position of the massage head and perform different massage forms according to different positions of the human body. Figure 5 The length and shape of the third connecting arm 5 and the fourth connecting arm 6 are changed, and the position of the massage head is changed and different massage forms are performed according to different positions of the human body. Figure 6The third and fourth connecting arms 5 and 6 are equipped with multiple sets of massage heads, enabling simultaneous massage of the head, neck, and shoulders. This means that by improving the design of the third and fourth connecting arms 5 and 6, this massage mechanism can be extended to include different massage patterns and adjustable massage head positions for specific body parts. Similarly, this can be achieved through the design of the first and second connecting arms 3 and 4. This allows designers to freely adjust the shape and position of the massage heads to target specific body parts, allowing for the flexible design of a variety of massage mechanisms with diverse functions.

[0049] More specifically, the housing 1 includes an upper shell (not shown) and a lower shell that are detachably connected. The upper shell and the lower shell are combined and locked to jointly define an internal accommodating space.

[0050] Combine Figure 3 The drive device 2 further includes two sets of transmission gears 24. A worm 211 is provided at each end of the motor 21. The two sets of transmission gears 24 are in one-to-one transmission connection with the two worms 211. The first eccentric shaft 22 and the second eccentric shaft 23 are provided on the two sets of transmission gears 24 in one-to-one correspondence. Thus, the first eccentric shaft 22 and the second eccentric shaft 23 can be driven by a single motor 21 to rotate in opposite directions to perform cam motion.

[0051] Furthermore, the transmission gear 24 includes a first gear 241, a second gear 242, and a third gear 243. The second gear 242 and the third gear 243 are collectively configured as a worm gear. The second gear 242 meshes with the worm 211 for transmission, and the third gear 243 meshes with the first gear 241 for transmission. The first eccentric shaft 22 or the second eccentric shaft 23 is provided on the rotating shaft of the first gear 241. It can be understood that when the motor 21 is operating, it drives the two worms 211 to rotate at high speed. The two worms 211 drive the second gear 242 and the third gear 243 in the two sets of transmission gears 24 to rotate circumferentially around their axes. The two third gears 243 drive the two first gears 241 to rotate in a one-to-one correspondence. The two first gears 241 drive the first eccentric shaft 22 and the second eccentric shaft 23 to rotate in a one-to-one correspondence.

[0052] The motor 21 is disposed within the internal accommodating space, which includes a central cylinder for housing the motor 21. The worm 211 is located within the internal accommodating space, and the transmission gear 24 is also disposed within the internal accommodating space. The rotating shaft of the first gear 241 extends out of the upper housing 11 and is connected to the first eccentric shaft 22 or the second eccentric shaft 23. The second gear 242 may be a helical gear, and the third gear 243 may be a spur gear. The second gear 242 and the third gear 243 may be integrally formed or assembled.

[0053] Furthermore, the rotating shaft of the first gear 241 is inserted into the eccentric hole of the lower eccentric shaft section (222, 232) of the first eccentric shaft 22 or the second eccentric shaft 23 and extends into the eccentric hole of the upper eccentric shaft section (221, 231). Thus, the rotating shaft of the first gear 241 can synchronously drive the upper eccentric shaft section (221, 231) and the lower eccentric shaft section (222, 232) to rotate.

[0054] like Figure 1 As shown, for the installation structure of the first connecting arm 3 and the second connecting arm 4, the first connecting arm 3 can be rotatably sleeved on the lower eccentric shaft section 222 of the first eccentric shaft 22; the second connecting arm 4 can be rotatably sleeved on the lower eccentric shaft section 232 of the second eccentric shaft 23.

[0055] Specifically, the middle portion of the first connecting arm 3 rotatably engages the lower eccentric shaft segment 222 of the first eccentric shaft 22. One end of the first connecting arm 3 is provided with a first massage portion 31, and the other end is swingably connected to the second connecting arm 4. The middle portion of the second connecting arm 4 rotatably engages the lower eccentric shaft segment 232 of the second eccentric shaft 23. One end of the second connecting arm 4 is provided with a second massage portion 41, and the other end is swingably connected to the first connecting arm 3. In other words, the first and second massage portions 31, 41 extend outward, allowing massage to be performed at two locations separately. The structural design of the connecting arms allows the massage heads of the first and second massage portions 31, 41 to be positioned higher than the third and fourth massage portions 51, 61.

[0056] Regarding the third connecting arm 5 and the fourth connecting arm 6, one end of the third connecting arm 5 is provided with a third massage portion 51, and the other end is swingably connected to the fourth connecting arm 6. The fourth connecting arm 6 has one end with a fourth massage portion 61, and the other end is swingably connected to the third connecting arm 5. The third massage portion 51 may be a plurality of massage heads disposed on the third connecting arm 5, and the fourth massage portion 61 may be a plurality of massage heads disposed on the fourth connecting arm 6. The third connecting arm 5 and the fourth connecting arm 6 are symmetrically disposed, allowing the third massage portion 51 and the fourth massage portion 61 to cooperate in massage.

[0057] It can be understood that the third connecting arm 5 and the fourth connecting arm 6 are connected to each other in a swingable manner, so that the third connecting arm 5 and the fourth connecting arm can swing with the connection point as a fulcrum, thereby making the first massage part 51 and the second massage part 61 swing with the connection point of the third connecting arm 5 and the fourth connecting arm 6 to achieve a massage action.

[0058] As can be understood, when the motor 21 drives the first eccentric shaft 22 and the second eccentric shaft 23 to rotate, the first connecting arm 3 and the second connecting arm 4 each drive their respective massage heads to perform a combined motion of left-right swinging and back-and-forth movement, i.e., the massage heads move up and down while drawing a circular motion. Similarly, the third connecting arm 5 and the fourth connecting arm 6 each drive their respective massage heads to perform a combined motion of left-right swinging and back-and-forth movement, i.e., the massage heads move up and down while drawing a circular motion. In the third connecting arm 5 and the fourth connecting arm 6, the two groups of massage heads work together to massage a specific location.

[0059] Furthermore, the first connecting arm 3 and the second connecting arm 4 are connected by a first bearing so that the second connecting arm 4 and the first connecting arm 3 can swing relative to each other around their connection position; for example, a bearing hole is provided on the back of the second connecting arm 4, and a rotating shaft is provided on the front of the first connecting arm 3, the rotating shaft can be pivotally connected to the first bearing, and the first bearing is provided in the bearing hole. The third connecting arm 5 and the fourth connecting arm 6 are connected by a second bearing so that the third connecting arm 5 and the fourth connecting arm 6 can swing relative to each other around their connection position. For example, a bearing hole is provided on the back of the third connecting arm 5, and a rotating shaft is provided on the front of the fourth connecting arm 6, the rotating shaft can be pivotally connected to the second bearing, and the second bearing is provided in the bearing hole.

[0060] Among them, combined Figure 2 , the first eccentric shaft 22 and the second eccentric shaft 23 have the same structure and principle. The following will be explained by taking the first eccentric shaft 22 as an example. The first eccentric shaft 22 has an upper eccentric shaft segment 221 and a lower eccentric shaft segment 222. The eccentric hole of the lower eccentric shaft segment 222 is sleeved on the rotating shaft of the first gear 241. The rotating shaft continues to extend upward so that the eccentric hole of the upper eccentric shaft segment 221 is also sleeved on the rotating shaft of the first gear 241. Therefore, it can be seen that the eccentric holes of the upper eccentric shaft segment 221 and the lower eccentric shaft segment 222 are in the same position. When the motor 21 is used to drive the first gear 241 to rotate, the upper eccentric shaft segment 221 and the lower eccentric shaft segment 222 perform cam motion synchronously.

[0061] Furthermore, a mounting protrusion 223 is provided on the top edge of the upper eccentric shaft section 221, and the third connecting arm 5 is rotatably sleeved on the mounting protrusion 223 of the first eccentric shaft 22. Specifically, the third connecting arm 5 can be sleeved on the mounting protrusion 223 of the first eccentric shaft 22 through a bearing.

[0062] In addition, the mounting protrusion 223 is arranged near the eccentric hole of the upper eccentric shaft section 221; that is, the mounting protrusion 223 is further eccentrically arranged, so that the third connecting arm 5 and the fourth connecting arm 6 can better cooperate with each other for massage, and the movement trajectory of the third connecting arm 5 and the fourth connecting arm 6 will not interfere with the first connecting arm 3 and the second connecting arm 4.

[0063] During operation, when the motor 21 drives the first gear 241 to drive the lower eccentric shaft section (222, 232) of the first eccentric shaft 22 or the second eccentric shaft 23, the massage heads of the first connecting arm 3 and the second connecting arm 4 each perform a circular motion, and at the same time, the circular motion drives the connection point of the first connecting arm 3 and the second connecting arm 4 to perform a reciprocating linear motion. The two motions are combined together, so that the massage heads of the first connecting arm 3 and the second connecting arm 4 each perform a compound motion of left-right swinging and back-and-forth motion, and each massages a position. At the same time, when the motor 21 drives the first gear 241 to drive the upper eccentric shaft section (221, 231) of the first eccentric shaft 22 or the second eccentric shaft 23, the massage heads of the third connecting arm 5 and the fourth connecting arm 6 each perform a circular motion, and at the same time, the circular motion drives the connection point of the third connecting arm 3 and the fourth connecting arm 6 to perform a reciprocating linear motion. The two motions are combined together, so that the massage heads of the third connecting arm 5 and the fourth connecting arm 6 each perform a compound motion of left-right swinging and back-and-forth motion, and together massage a position.

[0064] In summary, according to the massage movement of the embodiment of the present invention, the second connecting arm 4 and the first connecting arm 3 are connected to each other in a swingable manner, so that the two connecting arms restrain each other, and the third connecting arm 5 and the fourth connecting arm 6 are connected to each other in a swingable manner, so that the two connecting arms restrain each other. The guide component can be removed, and the massage head can be maintained in a specific direction, thereby simplifying the structure of the massage movement, facilitating assembly, reducing costs, and maximizing product weight reduction. Different massage forms can be designed for specific parts of the human body and a variety of massage movements can be designed by changing the position of the massage head.

[0065] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0066] 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 the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0067] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0068] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0069] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0070] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A massage movement, characterized in that: include: case; a drive device, the drive device comprising a motor and a first eccentric shaft and a second eccentric shaft driven by the motor, the motor being disposed in the housing, the first eccentric shaft and the second eccentric shaft being both disposed on the housing and capable of performing cam motion, the first eccentric shaft and the second eccentric shaft each comprising an upper eccentric shaft segment and a lower eccentric shaft segment, the upper eccentric shaft segment being disposed on the lower eccentric shaft segment; a first connecting arm, the first connecting arm being rotatably connected to the lower eccentric shaft segment of the first eccentric shaft, and the first connecting arm being provided with a first massage part; a second connecting arm, the second connecting arm being rotatably connected to the lower eccentric shaft section of the second eccentric shaft, the second connecting arm being provided with a second massage portion, the second connecting arm being swingably connected to the first connecting arm to form a swing constraint for both; a third connecting arm, the third connecting arm being rotatably connected to the upper eccentric shaft segment of the first eccentric shaft, and the third connecting arm being provided with a third massage part; a fourth connecting arm, the fourth connecting arm being rotatably connected to the upper eccentric shaft segment of the second eccentric shaft, the fourth connecting arm being provided with a fourth massage portion, the fourth connecting arm being swingably connected to the third connecting arm to form a swing constraint on the fourth connecting arm; When the motor drives the first eccentric shaft and the second eccentric shaft to rotate, the first connecting arm and the second connecting arm restrain each other at the connected position, so that the first connecting arm drives the massage head of the first massage part to perform a compound motion of left-right swinging and back-and-forth movement, and the second connecting arm drives the massage head of the second massage part to perform a compound motion of left-right swinging and back-and-forth movement. The third connecting arm and the fourth connecting arm restrain each other at the connected position, so that the third connecting arm drives the massage head of the third massage part to perform a compound motion of left-right swinging and back-and-forth movement, and the fourth connecting arm drives the massage head of the fourth massage part to perform a compound motion of left-right swinging and back-and-forth movement.

2. The massage movement according to claim 1, characterized in that: The first connecting arm is rotatably sleeved on the lower eccentric shaft section of the first eccentric shaft; the second connecting arm is rotatably sleeved on the lower eccentric shaft section of the second eccentric shaft.

3. The massage movement according to claim 2, characterized in that: The middle position of the first connecting arm can be rotatably sleeved on the lower eccentric shaft segment of the first eccentric shaft, one end of the first connecting arm is provided with the first massage part, and the other end is connected to the second connecting arm so as to be swingable with each other; the middle position of the second connecting arm can be rotatably sleeved on the lower eccentric shaft segment of the second eccentric shaft, one end of the second connecting arm is provided with the second massage part, and the other end is connected to the first connecting arm so as to be swingable with each other.

4. The massage movement according to claim 1, characterized in that: One end of the third connecting arm is provided with the third massage part, and the other end is connected to the fourth connecting arm so as to be swingable; one end of the fourth connecting arm is provided with the fourth massage part, and the other end is connected to the third connecting arm so as to be swingable.

5. The massage movement according to claim 1, characterized in that: The first connecting arm and the second connecting arm are connected by a first bearing so that the second connecting arm and the first connecting arm can swing relative to each other around their connecting position; the third connecting arm and the fourth connecting arm are connected by a second bearing so that the third connecting arm and the fourth connecting arm can swing relative to each other around their connecting position.

6. The massage movement according to claim 1, characterized in that: The driving device includes two sets of transmission gears. A worm is provided at both ends of the motor. The two sets of transmission gears are connected to the two worms in a one-to-one manner. The first eccentric shaft and the second eccentric shaft are arranged on the two sets of transmission gears in a one-to-one manner.

7. The massage movement according to claim 6, characterized in that: The transmission gear includes a first gear, a second gear and a third gear. The second gear and the third gear are jointly constructed as a worm gear. The second gear is engaged with the worm for transmission. The third gear is engaged with the first gear for transmission. The first eccentric shaft or the second eccentric shaft is provided on the rotating shaft of the first gear.

8. The massage movement according to claim 7, characterized in that: The rotating shaft of the first gear is inserted into the eccentric hole of the lower eccentric shaft section of the first eccentric shaft or the second eccentric shaft and extends into the eccentric hole of the upper eccentric shaft section.

9. The massage movement according to claim 1, characterized in that: The top edges of the upper eccentric shaft section of the first eccentric shaft and the upper eccentric shaft section of the second eccentric shaft are each provided with a mounting protrusion, the third connecting arm is rotatably sleeved on the mounting protrusion of the first eccentric shaft, and the fourth connecting arm is rotatably sleeved on the mounting protrusion of the second eccentric shaft.

10. The massage movement according to claim 9, characterized in that: The mounting protrusion is arranged adjacent to the eccentric hole of the upper eccentric shaft segment.

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