Massage machine core and waist massage instrument

Abstract

The massage machine core comprises a machine core shell, a massage mechanism and a driving mechanism, the machine core shell extends in the first direction, the machine core shell is provided with a skin near face and a skin far face which are opposite in the second direction, and the first direction and the second direction are arranged at an angle. The massage mechanism comprises at least two massage heads movably arranged on the machine core shell. The driving mechanism is arranged on the machine core shell and comprises a power assembly and at least two swing rods connected to the power assembly, each swing rod swings around the first end under the driving effect of the power assembly, and the projection of the swing track of each swing rod on the near-skin face is a straight line parallel to the first direction. The two massage heads can be close to or far away from each other in the first direction under the action of the power assembly and the swing rod. According to the massage machine core and the waist massage instrument, the consistency of the massage heads in the massage process is improved, and therefore the massage effect is improved.

Description

Technical Field

[0001] This application relates to the field of massage technology, and in particular to a massage mechanism and a waist massager. Background Technology

[0002] As people pay more and more attention to their health, more and more people are using lumbar massagers to massage their lower backs and relieve discomfort such as lower back fatigue and soreness caused by prolonged sitting.

[0003] In related technologies, waist massagers typically include a waist belt and a massage mechanism, which usually has two movable massage heads to conform to the body for massage. However, currently, the two massage heads usually oscillate back and forth in a plane parallel to the skin surface of the massage mechanism. In this way, it is not easy to pinch the flesh of the massage area, and the massage effect of the two massage heads is not consistent. Utility Model Content

[0004] This application discloses a massage mechanism and a waist massager, which can more easily pinch the flesh of the massage area and improve the consistency of the massage head during the massage process, thereby enhancing the massage effect.

[0005] To achieve the above objectives, in a first aspect, embodiments of this application disclose a massage mechanism, comprising:

[0006] A movement housing, the movement housing extending along a first direction and having a near-skin surface and a far-skin surface opposite each other in a second direction, the first direction and the second direction being angled together;

[0007] A massage mechanism comprising at least two massage heads movably disposed within the housing of the mechanism, the two massage heads being spaced apart along the first direction and located on the side near the skin surface; and,

[0008] A driving mechanism is disposed in the core housing. The driving mechanism includes a power component and at least two swing arms connected to the power component. Each swing arm has a first end and a second end that are arranged opposite to each other along its length. The first end of each swing arm is located inside the core housing and is movably connected to the core housing. The second end of each swing arm is located outside the core housing and is connected to the massage head. Each swing arm swings around the first end under the driving action of the power component, and the projection of the swing trajectory of the swing arm onto the skin surface is a straight line parallel to the first direction, so that the two massage heads can move closer or further apart from each other along the first direction under the action of the power component and the swing arm.

[0009] As an optional implementation, in an embodiment of the first aspect of this application, the second end is provided with a ball bearing portion, the inner surface of the movement housing is provided with a ball groove, and the ball bearing portion is rotatably disposed within the ball groove; or,

[0010] The second end is provided with a first shaft connection part, and the inner surface of the movement housing is provided with a second shaft connection part. The axes of the first shaft connection part and the second shaft connection part extend along a third direction, and the first shaft connection part is rotatably connected to the second shaft connection part.

[0011] The third direction is configured to be perpendicular to the first direction and the second direction.

[0012] As an optional implementation, in an embodiment of the first aspect of this application, when the second end is provided with a ball shaft portion, the power assembly includes a power component, at least two gears and at least two connecting arms. The power component is disposed on the movement housing, each gear is rotatably disposed on the movement housing, and each gear is connected to the power component. The gear rotates around the second direction under the drive of the power component. An eccentric shaft is provided on the end face of the gear, one end of the connecting arm is connected to the eccentric shaft, and the other end of the connecting arm is connected to the rocker arm.

[0013] As an optional implementation, in an embodiment of the first aspect of this application, at least two limiting grooves are provided on the skin surface that extend along the second direction, and a swing rod is movably inserted into one of the limiting grooves. Each limiting groove extends along the first direction, and the limiting groove is used to allow the swing rod to swing along the first direction and restrict the swing rod from swinging along the third direction.

[0014] As an optional implementation, in an embodiment of the first aspect of this application, the movement housing includes an upper shell, a lower shell, and a bracket disposed along the second direction. The bracket is connected between the upper shell and the lower shell. The inner surface of the lower shell is provided with a first groove, and the side of the bracket facing the inner surface is provided with a second groove. The first groove and the second groove together form the ball groove.

[0015] The gear is located between the bracket and the lower shell and is rotatably connected to the lower shell. The connecting arm is located on the side of the bracket facing the upper shell along the second direction.

[0016] As an alternative implementation, in an embodiment of the first aspect of this application, at least two of the swing arms are arranged in a straight line along the first direction.

[0017] As an alternative implementation, in an embodiment of the first aspect of this application, each of the massage heads extends along a third direction, and the massage head is connected to the swing arm at the middle of the third direction;

[0018] The third direction is configured to be perpendicular to the first direction and the second direction.

[0019] As an optional implementation, in an embodiment of the first aspect of this application, any two adjacent massage heads are respectively a first sub-massage head and a second sub-massage head, the first sub-massage head having a first side surface close to the second sub-massage head in the first direction, and the second massage head having a second side surface close to the first massage head in the first direction;

[0020] The first side is recessed inward at the middle of the third direction to form a first recessed portion, and the second side is recessed inward at the middle of the third direction to form a second recessed portion, with the second recessed portion and the first recessed portion being opposite to each other.

[0021] The third direction is configured to be perpendicular to the first direction and the second direction.

[0022] As an optional implementation, in an embodiment of the first aspect of this application, the massage mechanism includes two massage groups, which are respectively located on both sides of the power assembly in the first direction. Each massage group includes two massage heads spaced apart along the first direction. Under the action of the power assembly and the swing arm, the two massage heads move closer to or further away from each other along the first direction.

[0023] As an alternative implementation, in an embodiment of the first aspect of this application, each of the massage heads extends along a third direction, which is configured to be perpendicular to the first direction and the second direction.

[0024] As an optional implementation, in an embodiment of the first aspect of this application, the mechanism housing includes a first housing assembly and a second housing assembly connected side by side along the first direction, the two massage groups are respectively disposed on the first housing assembly and the second housing assembly, the drive mechanism is disposed on the first housing assembly and / or the second housing assembly, and a connecting cavity is formed between the first housing assembly and the second housing assembly;

[0025] The massage mechanism also includes a rotating shaft that is rotatably inserted through the connecting cavity to rotatably connect the first housing assembly and the second housing assembly.

[0026] As an optional implementation, in an embodiment of the first aspect of this application, the power assembly includes a motor and two transmission assemblies. The motor is disposed in the mounting cavity formed by the first housing assembly and the second housing assembly. The two transmission assemblies are respectively disposed in the first housing assembly and the second housing assembly. The motor is provided with a worm gear located in the connecting cavity and extending in a third direction. One end of each transmission assembly is connected to the worm gear, and the other end of each transmission assembly is connected to each swing arm. The two transmission assemblies drive the swing arm to swing in the first direction under the drive of the worm gear.

[0027] The worm gear has the shaft at its end, and the third direction is configured to be perpendicular to the first direction and the second direction.

[0028] Secondly, this application discloses a waist massager, including a waist belt and a massage mechanism as described in the first aspect above, wherein the massage mechanism is disposed on the waist belt.

[0029] As an alternative implementation, in an embodiment of the second aspect of this application, each of the massage heads extends along the width direction of the belt, and / or the swing arm of each of the massage heads is located at the middle of the width direction of the belt.

[0030] As an optional implementation, in an embodiment of the second aspect of this application, the belt includes a belt body and a pressure belt, the massage mechanism is disposed on the belt body, the pressure belt extends along the length of the belt, the pressure belt is at least partially disposed inside the belt body to abut against the distal skin surface of the mechanism housing, and the pressure belt is used to provide pressure to the massage head of the massage mechanism.

[0031] As an alternative implementation, in an embodiment of the second aspect of this application, the projection of each massage head on the proximal surface of the belt is within the projection range of the pressure band on the proximal surface of the belt along the length direction of the belt.

[0032] As an alternative implementation, in an embodiment of the second aspect of this application, the belt is provided with a clearance opening connecting its interior and exterior, the movement housing is provided with connecting portions having through holes at both ends along the length direction of the belt, and the two ends of the pressure belt pass through the through holes and the clearance opening respectively to be located outside the belt.

[0033] Compared with the prior art, the beneficial effects of this application are:

[0034] The massage mechanism and waist massager provided in this application have at least two massage heads spaced apart along a first direction. The two massage heads are connected to a power component via a swing arm. Driven by the power component, the swing arm swings relative to the mechanism housing, and the projection of the swing trajectory onto the skin-near surface of the mechanism housing is a straight line. Driven by the swing arm, the two massage heads move closer to each other or further away from each other along the first direction. That is, the two massage heads swing in an arc shape in a plane perpendicular to the skin-near surface. When the two massage heads move to their farthest distance and then move closer to each other, the arc-shaped swing makes it easier for the massage heads to pinch the flesh of the massage area, thereby achieving a more comfortable pinching effect. At the same time, the arc-shaped swing of the two massage heads in a plane perpendicular to the skin-near surface makes the projection of the swing trajectory of the massage heads onto the skin-near surface also a straight line. Therefore, the massage position of each massage head will not fluctuate in the direction perpendicular to the first and second directions, thus making the massage effect of the massage head consistent during the massage process, thereby improving the massage effect of the massage mechanism. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the massage mechanism disclosed in this application;

[0037] Figure 2 This is an exploded view of the massage mechanism disclosed in this application;

[0038] Figure 3 This is a top view of the massage mechanism disclosed in this application;

[0039] Figure 4 for Figure 3 Sectional view at point AA;

[0040] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0041] Figure 6 This is an exploded view of the movement housing and massage mechanism disclosed in this application;

[0042] Figure 7 This is a schematic diagram of the drive mechanism disclosed in this application;

[0043] Figure 8 This is a partially exploded view of the movement housing disclosed in this application;

[0044] Figure 9 This is a schematic diagram of the structure of the massage facility disclosed in this application;

[0045] Figure 10 This is a top view of the lumbar massager disclosed in this application;

[0046] Figure 11 This is a bottom-view schematic diagram of the lumbar massager disclosed in this application;

[0047] Figure 12 This is an exploded structural diagram of the waist massager disclosed in this application;

[0048] Figure 13 This is a partial structural diagram of the waist massager disclosed in this application.

[0049] Explanation of reference numerals in the attached figures:

[0050] 100. Massage mechanism; 10. Mechanism housing; 10a. Near-skin surface; 10b. Far-skin surface; 10c. Ball groove; 10d. Second shaft connection; 10e. Limiting groove; 10f. Connecting part; 10j. Through hole; 101. First housing assembly; 102. Second housing assembly; 103. Connecting cavity; 11. Upper shell; 12. Lower shell; 12a. First groove; 13. Support; 13a. Second groove; 20. Massage mechanism; 20a. Massage group; 21. Massage head; 211. First sub-massage head; 211a. First side; 211b. First recess; 212. Second sub-massage head; 212a. Two side views; 212b, second recess; 30, drive mechanism; 31, power assembly; 311, power component; 311a, motor; 311b, worm gear; 312, transmission assembly; 312a, gear; 312b, connecting arm; 312c, eccentric shaft; 312d, worm wheel; 32, swing arm; 32a, first end; 32b, second end; 321, ball joint; 322, first shaft connection; 40, rotating shaft; X, first direction; Y, second direction; Z, third direction; 200, waist massager; 201, waist belt; 201a, waist belt body; 201b, pressure belt; 201c, clearance opening. Detailed Implementation

[0051] 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, and 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.

[0052] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0053] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0054] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0055] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0056] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0057] See Figure 1 and Figure 2 This application discloses a massage mechanism 100, including a mechanism housing 10, a massage mechanism 20, and a drive mechanism 30. The mechanism housing 10 extends along a first direction X and has a proximal skin surface 10a and a distal skin surface 10b opposite each other in a second direction Y. The first direction X and the second direction Y are arranged at an angle. The massage mechanism 20 is disposed in the mechanism housing 10 and connected to the drive mechanism 30. Under the driving action of the drive mechanism 30, the massage mechanism 20 moves to achieve a massage effect.

[0058] It should be noted that the near-skin surface 10a of the massage mechanism housing 10 refers to the surface of the massage mechanism 100 facing the user's skin during use, while the far-skin surface 10b is the surface away from the user's skin.

[0059] Optionally, the movement housing 10 can be generally elongated, with the first direction X being the length direction of the movement housing 10 and the second direction Y being the thickness direction of the movement housing 10. The first direction X and the second direction Y can be perpendicular or approximately perpendicular, wherein the angle between the "approximately perpendicular" first direction X and second direction Y can be approximately 90°, such as 88°, 89°, 91°, or 92°.

[0060] In some possible implementations, the massage mechanism 20 includes at least two massage heads 21 movably disposed in the core housing 10. The two massage heads 21 are spaced apart along a first direction X and located on the side near the skin surface 10a so as to fit in contact with the user's massage area for massage.

[0061] In some possible embodiments, the drive mechanism 30 is disposed in the core housing 10. The drive mechanism 30 includes a power component 31 and at least two swing arms 32 connected to the power component 31. Each swing arm 32 has a first end 32a and a second end 32b disposed opposite to each other along its length. The first end 32a of each swing arm 32 is located inside the core housing 10 and is movably connected to the core housing 10. The second end 32b of each swing arm 32 is located outside the core housing 10 and is connected to the massage head 21. Each swing arm 32 swings around the first end 32a under the driving action of the power component 31.

[0062] It is understood that each massage head 21 is connected to a corresponding swing arm 32. Under the action of the power component 31, the two swing arms 32 move in opposite directions in the first direction X, so that the two massage heads 21 move closer or further apart along the first direction X. Furthermore, since the first end 32a of the swing arm 32 is movably connected to the housing 10 of the mechanism, and the second end 32b of the swing arm 32 is connected to the massage head 21, the swing arm 32 swings around the first end 32a under the drive of the power component 31. That is, the swing motion of the swing arm 32 under the action of the power component 31 is a swing motion with the first end 32a as the fulcrum. At this time, the massage head 21 can swing along the first direction X under the drive of the swing arm 32, or it can swing along both the first direction X and the second direction Y.

[0063] In some possible implementations, the projection of the swing trajectory of the pendulum 32 onto the skin surface 10a is a straight line parallel to the first direction X, so that the two massage heads 21 can move closer or further apart along the first direction X under the action of the power assembly 31 and the pendulum 32. It can be understood that, based on the swinging motion of the massage heads 21 driven by the pendulum 32, the projection of the swing trajectory of the pendulum 32 onto the skin surface 10a is further defined as a straight line parallel to the first direction X, so that the pendulum 32 swings in an arc along the first direction X with the first end 32a as the fulcrum, similar to the back-and-forth swinging motion of a pendulum clock's pendulum.

[0064] The massage mechanism 100 provided in this application has at least two massage heads 21 spaced apart along a first direction X. The two massage heads 21 are connected to a power component 31 via a swing arm 32. The swing arm 32 swings relative to the mechanism housing 10 under the drive of the power component 31, and the projection of the swing trajectory on the skin-near surface 10a of the mechanism housing 10 is a straight line. The two massage heads 21 move closer to each other or further away from each other along the first direction X under the drive of the swing arm 32, that is, the two massage heads 21 swing in an arc shape in a plane perpendicular to the skin-near surface 10a, moving closer to each other or further away from each other.

[0065] As the two massage heads 21 move to their furthest distance and then approach each other, the arc-shaped oscillation brings them closer together, making it easier to pinch and massage the skin of the area being massaged, thus achieving a more comfortable pinching effect. Simultaneously, the two massage heads 21 oscillate in an arc within a plane perpendicular to the skin surface 10a, ensuring that the projection of the oscillation trajectory of the massage heads 21 onto the skin surface 10a forms a straight line. This prevents the massage position of each massage head 21 from being in a direction perpendicular to the first direction X and the second direction Y (e.g., ...). Figure 1 and Figure 2 The massage head 21 moves up and down in the Z direction (in the middle) to keep the massage effect consistent during the massage process, thereby improving the massage effect of the massage mechanism 100.

[0066] Furthermore, because the two massage heads 21 move closer to or further away from each other, they can perform opening and closing massage, covering a wider area and concentrating the force on the massage area, resulting in a better massage effect.

[0067] In some possible implementations, the massage mechanism 20 includes two massage groups 20a, which are located on both sides of the power assembly 31 in the first direction X. Each massage group 20a includes two massage heads 21 spaced apart along the first direction X. Under the action of the power assembly 31 and the swing arm 32, the two massage heads 21 move closer to or further away from each other along the first direction X.

[0068] That is, the massage mechanism 20 may include four massage heads 21, which are divided into two groups. The two massage heads 21 of each massage group 20a swing towards or away from each other along the first direction X. The two massage groups 20a can simultaneously act on different areas of the human body (such as the left and right waist areas) to perform a larger range of massage. As the massage heads 21 move closer to each other, they can pinch a larger area of ​​muscles, further increasing the massage range and achieving a comprehensive massage effect.

[0069] Especially when used for waist massage, the two massage sets 20a can be located on the left and right sides of the erector spinae muscles of the waist, respectively, to pinch and massage the erector spinae muscles on the left and right sides of the waist, thereby achieving a comprehensive massage effect on the waist.

[0070] It should be noted that the two massage groups 20a are arranged symmetrically, wherein the shapes and sizes of the two massage heads included in each massage group 20a may be the same or different. Preferably, all massage heads 21 in the two massage groups 20a are generally elongated, which makes the overall massage sensation of the massage mechanism 20 consistent. However, the two massage heads 21 located on the outermost side (close to the two ends of the core housing 10 in the first direction X) are the same size, while the two massage heads 21 located in between are the same size, and the two massage heads 21 located on the outermost side are larger than the two massage heads 21 located in between.

[0071] See also Figures 2 to 5 In one possible embodiment, the second end 32b is provided with a ball shaft portion 321, and the inner surface of the movement housing 10 is provided with a ball groove 10c, and the ball shaft portion 321 is rotatably disposed in the ball groove 10c.

[0072] By providing a ball bearing portion 321 at the second end 32b of the swing arm 32 and a ball groove 10c on the inner surface of the mechanism housing 10, the second end 32b of the swing arm 32 is movably connected to the mechanism housing 10 through the cooperation of the ball bearing and the ball groove 10c. During the swinging process of the swing arm 32, the groove wall surface of the ball groove 10c serves as a bearing surface, providing support for the swing arm 32 and thus providing sufficient support force for the massage head 21 connected to the swing arm 32, making the movement of the massage head 21 more reliable. At the same time, by using the ball groove 10c on the inner surface of the mechanism housing 10 to accommodate the ball bearing portion 321 of the swing arm 32, a certain constraint can be provided on the swing fulcrum of the swing arm 32, making the swing arm 32 more stable during the swinging process around the fulcrum, further improving the reliability of the movement of the massage head 21.

[0073] Optionally, the ball shaft portion 321 can be a sphere or a hemisphere, and correspondingly, the ball groove 10c can be a sphere-shaped ball groove 10c or a hemisphere-shaped hemispherical groove 10c, as long as it can satisfy the contact between the spherical structure between the rocker arm 32 and the movement housing 10.

[0074] In other possible embodiments, the second end 32b is provided with a first shaft connection portion 322, and the inner surface of the movement housing 10 is provided with a second shaft connection portion 10d. The axes of the first shaft connection portion 322 and the second shaft connection portion 10d extend along the third direction Z, and the first shaft connection portion 322 is rotatably connected to the second shaft connection portion 10d.

[0075] The third direction Z is configured to be perpendicular to the first direction X and the second direction Y. The first direction X, the second direction Y, and the third direction Z can be perpendicular or approximately perpendicular to each other. As mentioned above, the first direction X can be the length direction of the movement housing 10, the second direction Y can be the thickness direction of the movement housing 10, and therefore, the third direction Z can be the width direction of the movement housing 10.

[0076] By providing a first shaft connection 322 at the second end 32b, which is rotatably connected to a second shaft connection 10d on the mechanism housing 10, and setting the axes of the first shaft connection 322 and the second shaft connection 10d along a third direction Z, the swing arm 32 can rotate around the third direction Z. Similarly, the swing arm 32 can swing back and forth in the first direction X, making the trajectory of the swing arm 32 a straight line along the first direction X. Because of the shaft connection, the swing arm 32 can only rotate around the axis along the third direction Z, reducing the possibility of the swing arm 32 swaying in other directions, making the movement of the swing arm 32 more reliable, thereby improving the reliability of the massage head 21's movement.

[0077] Optionally, the first shaft connection portion 322 can be a shaft body disposed at the second end 32b, and correspondingly, the second shaft connection portion 10d is a shaft hole disposed on the inner surface of the movement housing 10. Alternatively, the first shaft connection portion 322 can be a shaft hole disposed at the second end 32b, and correspondingly, the second shaft connection portion 10d is a shaft body disposed on the inner surface of the movement housing 10. As long as the rotational connection between the rocker arm 32 and the movement housing 10 can be satisfied, the specific structure is not limited in the embodiments of this application.

[0078] Combination Figures 4 to 7 In order to realize the swing of the swing arm 32, in some possible embodiments, when the second end 32b is provided with a ball shaft portion 321, the power assembly 31 includes a power component 311, at least two gears 312a and at least two connecting arms 312b. The power component 311 is provided on the movement housing 10. Each gear 312a is rotatably provided on the movement housing 10 and each gear 312a is connected to the power component 311. The gear 312a rotates around the second direction Y under the drive of the power component 311. An eccentric shaft 312c is provided on the end face of the gear 312a. One end of the connecting arm 312b is connected to the eccentric shaft 312c and the other end of the connecting arm 312b is connected to the swing arm 32.

[0079] The power assembly 31 is designed to include a power component 311, at least two gears 312a, and at least two connecting arms 312b. An eccentric shaft 312c on the gear 312a is connected to one end of the connecting arm 312b, and the other end of the connecting arm 312b is connected to the swing arm 32. When the power component 311 drives the gear 312a to rotate circumferentially, the eccentric shaft 312c rotates accordingly, thereby driving the connecting arm 312b to move. Driven by the connecting arm 312b, the swing arm 32 swings around the ball shaft 321 as a fulcrum, thereby driving the massage head 21 connected to the second end 32b of the swing arm 32 to move closer or further apart along the first direction X. The massage head 21 can reciprocate around the rotation axis 40 located in the middle of the massage head 21 at both ends in the third direction Z, thereby enriching the massage effect of the massage head 21 when it performs kneading massage during the process of approaching or moving away. Furthermore, by using gear 312a and eccentric shaft 312c mounted on it to connect with connecting arm 312b to drive the swing arm 32, the rotational motion can be converted into the swing of the swing arm 32, resulting in high transmission efficiency, compact structure, and more stable power output.

[0080] Combination Figure 6 In some possible embodiments, at least two limiting grooves 10e are provided on the skin surface 10a that extend along the second direction Y. A swing rod 32 is movably inserted into a limiting groove 10e. Each limiting groove 10e extends along the first direction X and is used to allow the swing rod 32 to swing along the first direction X and to restrict the swing rod 32 from swinging along the third direction Z.

[0081] By providing a limiting groove 10e near the skin surface 10a, the swing arm 32 can be movably inserted through the limiting groove 10e. The limiting groove 10e extends along the first direction X, restricting the swing arm 32's swing along the third direction Z within the limiting groove 10e. This ensures that the swing arm 32 swings only in the first direction X, thereby causing the massage head 21 to move only in the first direction X. This prevents the massage head 21 from shifting position in the third direction Z, ensuring that the two massage heads 21 move closer or further apart along the first direction X, achieving consistency in massage direction and effect, and improving massage accuracy. Furthermore, when the massage head 21 moves to any position, the mechanism housing 10 can provide stable support to the massage head 21 via the swing arm 32, maintaining the stability of the massage head 21's movement.

[0082] It should be noted that the aforementioned limiting groove 10e means that it extends through the second direction Y into the interior of the movement housing 10, so that the rocker arm 32 can extend from the interior of the movement housing 10 to the exterior of the movement housing 10 through the limiting groove 10e.

[0083] As described above, the drive mechanism 30 for driving the massage head 21 to swing includes a power component 311, a gear 312a, a connecting arm 312b, and a swing arm 32. The structure is complex and involves many components. To more rationally arrange these components inside the housing 10 and to provide sufficient support for the swing arm 32, in some possible embodiments, [the following is combined with...] Figure 5 The movement housing 10 includes an upper shell 11, a lower shell 12 and a bracket 13 arranged along the second direction Y. The bracket 13 is connected between the upper shell 11 and the lower shell 12. The inner surface of the lower shell 12 is provided with a first groove 12a, and the side of the bracket 13 facing the inner surface is provided with a second groove 13a. The first groove 12a and the second groove 13a together form a ball groove 10c.

[0084] Gear 312a is located between bracket 13 and lower shell 12 and is rotatably connected to lower shell 12. Connecting arm 312b is located on the side of bracket 13 facing upper shell 11 along the second direction Y.

[0085] The mechanism housing 10 is divided into an upper housing 11, a lower housing 12, and a support 13. The support 13 is connected between the upper housing 11 and the lower housing 12. A first groove 12a is provided on the inner surface of the lower housing 12, and a second groove 13a is provided on the side of the support 13 facing the inner surface. The first groove 12a and the second groove 13a together form a ball groove 10c. This not only supports the swing arm 32 through the lower housing 12 of the massage mechanism 100 to provide sufficient support for the massage head 21, but also allows the support 13 and the lower housing 12 to jointly accommodate the ball shaft part 321, which can effectively constrain the ball shaft part 321 and improve the reliability of the connection between the swing arm 32 and the mechanism housing 10.

[0086] Since the connecting arm 312b drives the swing arm 32 to rotate around the ball shaft 321, and the connecting arm 312b is connected between the first end 32a and the second end 32b of the swing arm 32, the connecting arm 312b is set up using the space between the upper shell 11 and the bracket 13. The bracket 13 can provide support for the connecting arm 312b and provide good support force for the connecting arm 312b. Furthermore, the gear 312a is set up using the space between the lower shell 12 and the bracket 13, making the layout of the gear 312a more reasonable, increasing the overall rigidity of the massage mechanism 100, and extending the service life of the massage mechanism 100.

[0087] In some possible implementations, at least two rocker arms 32 are arranged in a straight line along the first direction X. In other words, the ball bearing portions 321 of the two rocker arms 32 are collinear in the first direction X, that is, the centers of the balls of the ball bearing portions 321 of the two rocker arms 32 are located on the same straight line in the first direction X.

[0088] By setting the swing arm 32 of each massage head 21 on the same straight line along the first direction X, the supporting force of the core housing 10 on the multiple massage heads 21 can be consistent. When the massage core 100 is applied to the waist massager 200, the supporting force of the waist belt 201 on the multiple massage heads 21 can also be consistent, thereby providing the user with a better massage effect.

[0089] In some possible implementations, each massage head 21 extends in the third direction Z. That is, the massage head 21 extends along the width direction of the housing 10.

[0090] By extending the massage head 21 along a third direction Z, that is, by setting the extension direction of the massage head 21 perpendicular to the movement direction of the massage head 21, a larger massage range can be provided and the massage comfort can be improved, provided that at least two massage heads 21 swing along the first direction X to move closer or further apart to perform opening and closing kneading massage.

[0091] In some possible implementations, the massage head 21 is connected to the swing arm 32 at its center along the third direction Z. In other words, the position on the massage head 21 for connecting to the swing arm 32 is centrally located along the third direction Z.

[0092] Connecting the massage head 21 to the swing arm 32 along the middle of the third direction (Z) reduces the tilt of the massage head 21 during swing, resulting in more even force application and a better massage effect. It also allows the swing arm 32 to provide good support for the massage head 21. Furthermore, connecting the swing arm 32 to the middle of the massage head 21 along the third direction (Z) reduces wear or jamming caused by uneven force on one side, resulting in more balanced force on the massage head 21 and extending its service life.

[0093] See Figure 9 In some possible embodiments, the mechanism housing 10 includes a first housing assembly 101 and a second housing assembly 102 connected side by side along a first direction X, two massage groups 20a are respectively disposed on the first housing assembly 101 and the second housing assembly 102, a drive mechanism 30 is disposed on the first housing assembly 101 and / or the second housing assembly 102, and a connecting cavity 103 is formed between the first housing assembly 101 and the second housing assembly 102.

[0094] The massage mechanism 100 also includes a rotating shaft 40, which is rotatably disposed in the connecting cavity 103 to rotatably connect the first housing assembly 101 and the second housing assembly 102. It can be understood that the rotating shaft 40 extends along a third direction Z (the width direction of the mechanism housing 10).

[0095] By configuring the core housing 10 as two rotatably connected first housing assembly 101 and second housing assembly 102, when the massage core 100 is attached to the massage area, the first housing assembly and the second housing assembly can rotate relative to each other, so that the core housing can better fit the massage area. Especially when applied to the waist, when the waist belt 201 is tied around the waist, the first housing assembly 101 and the second housing assembly 102 rotate relative to the pivot 40 to adapt to the shape of the waist, so that the massage head 21 fits the waist better, resulting in a better massage effect.

[0096] Since the massage mechanism 20 may include two massage groups 20a and the two massage groups 20a are respectively disposed in the first housing assembly 101 and the second housing assembly 102, in order to make the layout of the drive mechanism 30 more reasonable, preferably, the drive mechanism 30 is disposed together in the first housing assembly 101 and the second housing assembly 102.

[0097] Combination Figure 7 and Figure 8 In some possible embodiments, the power assembly 31 includes a motor 311a and two transmission assemblies 312. The motor 311a is disposed in the mounting cavity formed by the first housing assembly 101 and the second housing assembly 102. The two transmission assemblies 312 are respectively disposed in the first housing assembly 101 and the second housing assembly 102. The motor 311a is provided with a worm gear 311b, which is located in the connecting cavity 103 and extends along a third direction Z. One end of each transmission assembly 312 is connected to the worm gear 311b, and the other end of each transmission assembly 312 is connected to each swing arm 32. The two transmission assemblies 312 drive the swing arm 32 to swing along a first direction X under the drive of the worm gear 311b. The end of the worm gear 311b is provided with a rotating shaft 40, and the third direction Z is configured to be perpendicular to the first direction X and the second direction Y.

[0098] It should be noted that, in order to not only affect the worm gear 311b drive transmission assembly 312, the aforementioned rotating shaft is located at the end of the worm gear 311b.

[0099] By using a worm gear 312d and a worm 311b to drive multiple massage heads 21 for pinching massage, the worm 311b is used to set a rotating shaft 40 to realize the rotational connection between the first housing assembly 101 and the second housing assembly 102. While realizing the rotation of the housing assembly relative to the rotating shaft 40, the existing structural components can be fully utilized without the need to set a separate rotating component, which helps to simplify the structural components and make the internal structural layout of the massage mechanism 100 more compact.

[0100] It is understood that in this embodiment, the motor 311a drives the transmission components 312 on both sides via the worm gear 311b. While meeting the motion requirements, this simplifies the overall structure of the power component 31, making the overall layout more compact and reducing the number of motors 311a, which helps to reduce costs and energy consumption. Furthermore, the high reduction ratio of the worm gear 311b ensures the synchronicity of the movement of the massage groups 20a on both sides, avoiding the feeling of misalignment caused by asynchronous movement.

[0101] Optionally, the power assembly 31 may include two sets, each set of which is connected to the motor 311a and the swing arm 32, transmitting the drive of the motor 311a to the swing arm 32, causing the swing arm 32 to swing and thus drive the massage head 21 to move. Each set of power assemblies 31 is respectively disposed on the first housing assembly 101 and the second housing assembly 102, while the motor 311a and the worm gear 311b used to jointly drive the two sets of power assemblies 31 are disposed in the connecting cavity 103.

[0102] Each power assembly 31 includes a worm gear 312d, two gears 312a, and two connecting arms 312b. The two gears 312a are meshed together, and each gear 312a is equipped with an eccentric shaft 312c. The axes of rotation of the eccentric shaft 312c and the gear 312a are eccentrically positioned, meaning there is a certain distance between them. One end of the connecting arm 312b is connected to the eccentric shaft 312c, and the other end is connected to the rocker arm 32. The worm gear 312d is connected to the worm 311b and to one of the gears 312a, so that the rotation of one gear 312a drives the rotation of the other gear 312a. Therefore, when the motor 311a is running, the worm gear 312d rotates under the transmission of the worm 311b, driving a gear 312a to rotate. This gear 312a drives the eccentric shaft 312c on it to rotate. Under the drive of the eccentric shaft 312c, the connecting arm 312b moves, which in turn drives the swing arm 32 to swing, thus causing the massage head 21 to swing. At the same time, since the two gears 312a are connected to each other, the other gear 312a rotates and drives the eccentric shaft 312c on it to rotate. Under the drive of the eccentric shaft 312c, the connecting arm 312b moves, which in turn drives the swing arm 32 to swing, thus causing the massage head 21 to swing. Since the two gears 312a rotate in opposite directions, the two massage heads 21 in the massage assembly 20a move closer to or further away from each other along the first direction X.

[0103] As described above, the housing assembly may include an upper shell 11, a lower shell 12, and a bracket 13 connecting the two. Therefore, both the first housing assembly 101 and the second housing assembly 102 include the aforementioned upper shell 11, lower shell 12, and bracket 13 connecting the two. Taking the first housing assembly 101 as an example, the worm gear 312d and the two gears 312a are rotatably mounted on the lower shell 12. The lower shell 12 provides effective support for the worm gear 312d and the two gears 312a, ensuring smooth operation of the transmission process.

[0104] The two gears 312a are arranged side by side along the first direction X, which enables the two gears to drive the swing arm 32 to swing in a consistent manner.

[0105] See Figure 9 In some possible embodiments, any two adjacent massage heads 21 are respectively a first sub-massage head 211 and a second sub-massage head 212. The first sub-massage head 211 has a first side surface 211a close to the second sub-massage head 212 in the first direction X, and the second sub-massage head 212 has a second side surface 212a close to the first sub-massage head 211 in the first direction X. The first side surface 211a is recessed inward at its center in the third direction Z to form a first recessed portion 211b, and the second side surface 212a is recessed inward at its center in the third direction Z to form a second recessed portion 212b. The second recessed portion and the first recessed portion 211b are opposite to each other.

[0106] When the first sub-massage head 211 and the second sub-massage head 212 are brought close together to pinch the waist, the concave part can bring the muscles together. Compared with the method where both opposite sides are convex or one side is convex and the other side is concave, the two opposite concave parts can bring the muscles together to a greater extent, achieving a wider range of pinching massage effect. At the same time, it can enhance the adaptability of the massage head 21 to the muscle curve, without producing a strong pinching sensation, and improve the comfort of the kneading massage.

[0107] It is worth noting that the inward indentation of the middle of the first side surface 211a in the third direction Z means that, along the first direction X, the indentation direction of the first recessed portion 211b is away from the second side surface 212a. Similarly, the inward indentation of the middle of the second side surface 212a in the third direction Z means that, along the first direction X, the indentation direction of the second recessed portion 212b is away from the first side surface 211a. This makes the massage head 21 roughly figure-eight shaped, and the first and second recessed portions 211b along the first direction X can form a larger accommodating space when two adjacent massage heads 21 are close together, thus maximizing the muscle-gathering effect.

[0108] It can be understood that the third direction Z represents the length direction of the first sub-massage head 211 and the second sub-massage head 212. The first recess 211b is centrally located along the length direction of the first sub-massage head 211; in other words, the distance from the first recess 211b to both ends of the first sub-massage head 211 is the same along the third direction Z. The second recess 212b is centrally located along the length direction of the second sub-massage head 212; in other words, the distance from the second recess 212b to both ends of the second sub-massage head 212 is the same along the third direction Z.

[0109] See Figure 10 This application discloses a waist massager 200, including a waist belt 201 and a massage mechanism 100 as described in the above embodiment, with the massage mechanism 100 disposed on the waist belt 201. It is understood that the waist massager 200 having the aforementioned massage mechanism 100 also possesses all the technical effects of the aforementioned massage mechanism 100. That is, it can more easily pinch the flesh of the massaged area, while improving the consistency of the massage head 21 during the massage process, thereby enhancing the massage effect.

[0110] Specifically, when the belt 201 is in a flattened state, the projection of the movement trajectory of each massage head 21 onto the skin surface 10a is a straight line, parallel to the length direction of the belt 201. This ensures that during the massage process, the position of each massage head 21 will not fluctuate in the width direction of the belt 201. When the massage head 21 moves to any position, the belt 201 can maintain a constant supporting force on the massage head 21 to counteract the massage reaction force, ensuring the consistency of the massage effect during the massage process.

[0111] Optionally, a portion of the massage mechanism 100 is located inside the waist belt 201, and another portion is located outside the waist belt 201. Specifically, the mechanism housing 10 is located inside and connected to the waist belt 201, while the massage mechanism 20 is located outside the waist belt 201 for direct contact with the waist for massage. Alternatively, the entire massage mechanism 100 may be located inside the waist belt 201, while the massage mechanism 20 may indirectly contact the waist for massage.

[0112] Furthermore, the massage mechanism 100 can be detachably connected to the waist belt 201. The detachable connection can take various forms, including but not limited to buckle connections, magnetic connections, and screw connections. By separating the waist belt 201 from the massage mechanism 100, the waist belt 201 can be separated after prolonged use of the waist massager 200, allowing for individual cleaning of the waist belt 201. This avoids the health risks associated with bacterial growth on the waist belt 201 during extended use, ensuring the waist belt 201 remains clean.

[0113] Optionally, the waist belt 201, as a component that allows the entire waist massager 200 to be worn on the waist, can be roughly in the shape of a long strip. After the waist massager 200 is worn on the waist, the strip shape of the waist belt 201 directly increases the contact area between the waist belt 201 and the waist. In this way, while the waist massager 200 can be firmly fixed on the waist, the squeezing force of the waist belt 201 per unit area on the waist can be reduced, avoiding the pain caused to the user.

[0114] The belt 201 can be made of materials including, but not limited to, fabric and leather. It is understood that the belt 201 can be a structure made of only one material, or it can be a structure made of multiple materials, for example, the side closer to the waist can be fabric, while the side further away from the body can be leather. Of course, in other embodiments, the belt 201 can also have a flexible layer filled with a padding layer. This padding layer can be an elastic material such as sponge or memory foam, which allows the belt 201 to have greater elasticity and better wearing comfort.

[0115] For ease of wear, the two ends of the belt 201 are equipped with matching connecting accessories such as Velcro, magnetic buckles, and clips to facilitate locking or unlocking during use.

[0116] Optionally, the belt 201 can be a belt 201 that is only worn, or a belt 201 with built-in wiring. The wiring can be a power line or a signal line. The wiring connects the massage mechanism 100 to the power supply, or connects the massage mechanism 100 to the control unit, etc.

[0117] In some possible implementations, each massage head 21 extends along the width direction of the waist belt 201, and / or, the swing arm 32 of each massage head 21 is located at the middle of the width direction of the waist belt 201. In other words, the length direction of the massage head 21 is consistent with the width direction of the waist belt 201, and the swing arm 32 is equidistant from both sides of the waist belt 201 in the width direction of the waist belt 201.

[0118] By extending the massage head 21 along the width of the waist belt 201 in the length direction, the massage head 21 can move along the length direction of the waist belt 201 to massage, making the massage head 21 fit the waist curve more closely. The massage head 21 can also massage a wider range in the width direction, thereby expanding the area of ​​waist massage as a whole.

[0119] Furthermore, by setting the swing arm 32 of each massage head 21 in the middle of the waist belt 201 in the width direction, that is, the swing arm 32 is centered in the width direction of the waist belt 201, the waist belt 201 can be subjected to more balanced force, so as to provide sufficient support for the massage head 21 when massaging, thereby ensuring the reliability of the movement of the massage head 21.

[0120] In some possible implementations, at least two massage heads 21 are spaced apart along the length of the belt 201. Since the belt 201 is a long strip worn around the waist, by arranging at least two massage heads 21 spaced apart along the length of the belt 201, the massage heads 21 can have a larger placement space, allowing the massage heads 21 to massage in the width direction of the waist and ensuring that the massage covers the main area of ​​the waist.

[0121] See Figures 11 to 13 In some possible embodiments, the belt 201 includes a belt body 201a and a pressure belt 201b. The massage mechanism 100 is disposed on the belt body 201a, and the pressure belt 201b extends along the length of the belt 201. The pressure belt 201b is at least partially disposed inside the belt body 201a to abut against the skin-distal surface 10b of the mechanism housing 10. The pressure belt 201b is used to provide pressure to the massage head 21 of the massage mechanism 100. The pressure belt 201b may be partially disposed on the back side (the side away from the skin) of the belt body 201a, located outside the belt body 201a, and another portion disposed inside the belt body 201a; or, the entire pressure belt 201b may be disposed inside the belt body 201a.

[0122] By providing pressure band 201b for contact with the distal skin surface 10b of the massage mechanism 100, better support can be provided for the massage mechanism 100, thus ensuring sufficient support for the massage head 21 during the massage process and guaranteeing its stable operation. Furthermore, this prevents the massage mechanism 100 from shifting during operation, ensuring that the massage force is precisely applied to the waist and avoiding ineffective massage.

[0123] It should be noted that the pressure band 201b can work in conjunction with the vibration or kneading motion generated when the massage core 100 is working. By applying mechanical pressure to the massage core 100, the pressure is concentrated and transmitted to the deep muscle and fascia areas, thereby increasing the penetration of the massage head 21 into the human body and enhancing the deep tissue massage effect.

[0124] In addition, the pressure band 201b has an elastic structure. Combined with the mechanical movement of the massage mechanism 20, the pressure change of the pressure band 201b can simulate the "press-release" cycle, forming a multi-layered stimulation of muscles and fascia.

[0125] Optionally, the pressure band 201b can be made of high-elasticity materials such as latex or silicone, possessing high resilience and extensibility. Furthermore, the pressure band 201b can be connected to the distal surface 10b of the movement housing 10 by means of screws.

[0126] In some possible implementations, along the length of the belt 201, the projection of each massage head 21 onto the skin surface 10a falls within the projection range of the pressure band 201b onto the skin surface 10a. That is, the length of the pressure band 201b is greater than the distance between the two outermost massage heads 21 in the first direction X.

[0127] By setting the massage head 21 within the length direction of the pressure belt 201b, it can be ensured that the force of the pressure belt 201b acts directly on the corresponding area of ​​the massage head 21, so that the pressure belt 201b can better drive the waist belt 201 body to support the massage head 21 when applying pressure.

[0128] Combination Figures 11 to 13 In some possible embodiments, the waist belt 201 is provided with a clearance opening 201c that connects its interior and exterior. The two ends of the movement housing 10 along the length direction of the waist belt 201 are provided with connecting portions 10f having through holes 10j. The two ends of the pressure belt 201b pass through the through holes 10j and the clearance opening 201c in sequence to be located outside the waist belt 201.

[0129] The pressure belt 201b is connected using the mechanism housing 10, which provides effective support and connection stability for the portion of the pressure belt 201b located inside the waist belt 201, thereby improving the connection stability of the pressure belt 201b. Furthermore, the clearance opening 201c and the connecting portion 10f with the through hole 10j simplify the installation of the pressure belt 201b, allowing users to adjust the tightness as needed.

[0130] Optionally, the connecting part 10f can be a round rod-shaped structure, with both ends connected to the movement housing 10 to form the aforementioned through hole 10j. Alternatively, the connecting part 10f can be a protrusion on both ends of the movement housing 10, with through holes 10j opened on the protrusions for the pressure belt 201b to pass through.

[0131] The massage mechanism and waist massager disclosed in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the massage mechanism and waist massager of this application and their core ideas. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A massage mechanism, characterized in that, include: A movement housing, the movement housing extending along a first direction and having a near-skin surface and a far-skin surface opposite each other in a second direction, the first direction and the second direction being angled together; A massage mechanism comprising at least two massage heads movably disposed within the housing of the mechanism, the two massage heads being spaced apart along the first direction and located on the side near the skin surface; and, A driving mechanism is disposed in the core housing. The driving mechanism includes a power component and at least two swing arms connected to the power component. Each swing arm has a first end and a second end that are arranged opposite to each other along its length. The first end of each swing arm is located inside the core housing and is movably connected to the core housing. The second end of each swing arm is located outside the core housing and is connected to the massage head. Each swing arm swings around the first end under the driving action of the power component, and the projection of the swing trajectory of the swing arm onto the skin surface is a straight line parallel to the first direction, so that the two massage heads can move closer or further apart from each other along the first direction under the action of the power component and the swing arm.

2. The massage mechanism according to claim 1, characterized in that, The second end is provided with a ball bearing portion, and the inner surface of the movement housing is provided with a ball groove, the ball bearing portion being rotatably disposed within the ball groove; or, The second end is provided with a first shaft connection part, and the inner surface of the movement housing is provided with a second shaft connection part. The axes of the first shaft connection part and the second shaft connection part extend along a third direction, and the first shaft connection part is rotatably connected to the second shaft connection part. The third direction is configured to be perpendicular to the first direction and the second direction.

3. The massage mechanism according to claim 2, characterized in that, When the second end is provided with a ball shaft portion, the power assembly includes a power component, at least two gears and at least two connecting arms. The power component is located on the movement housing. Each gear is rotatably mounted on the movement housing and is connected to the power component. The gear rotates around the second direction under the drive of the power component. An eccentric shaft is provided on the end face of the gear. One end of the connecting arm is connected to the eccentric shaft, and the other end of the connecting arm is connected to the rocker arm.

4. The massage mechanism according to claim 3, characterized in that, At least two limiting grooves are provided on the near-skin surface, which extend along the second direction. A swing rod is movably inserted into one of the limiting grooves. Each limiting groove extends along the first direction and is used to allow the swing rod to swing along the first direction and restrict the swing rod from swinging along the third direction.

5. The massage mechanism according to claim 3, characterized in that, The movement housing includes an upper shell, a lower shell, and a bracket arranged along the second direction. The bracket is connected between the upper shell and the lower shell. The inner surface of the lower shell is provided with a first groove, and the side of the bracket facing the inner surface is provided with a second groove. The first groove and the second groove together form the ball groove. The gear is located between the bracket and the lower shell and is rotatably connected to the lower shell. The connecting arm is located on the side of the bracket facing the upper shell along the second direction.

6. The massage mechanism according to claim 1, characterized in that, At least two of the said pendulum arms are arranged in a straight line along the first direction.

7. The massage mechanism according to claim 1, characterized in that, Each of the massage heads extends along a third direction, and the massage head is connected to the swing arm at the middle of the third direction; The third direction is configured to be perpendicular to the first direction and the second direction.

8. The massage mechanism according to claim 1, characterized in that, Any two adjacent massage heads are respectively a first sub-massage head and a second sub-massage head. The first sub-massage head has a first side surface close to the second sub-massage head in the first direction, and the second massage head has a second side surface close to the first massage head in the first direction. The first side is recessed inward at the middle of the third direction to form a first recessed portion, and the second side is recessed inward at the middle of the third direction to form a second recessed portion, with the second recessed portion and the first recessed portion being opposite to each other. The third direction is configured to be perpendicular to the first direction and the second direction.

9. The massage mechanism according to claim 1, characterized in that, The massage mechanism includes two massage groups, which are located on both sides of the power assembly in the first direction. Each massage group includes two massage heads spaced apart along the first direction. Under the action of the power assembly and the swing arm, the two massage heads move closer to or further away from each other along the first direction.

10. The massage mechanism according to claim 9, characterized in that, Each of the massage heads extends along a third direction, which is configured to be perpendicular to the first direction and the second direction.

11. The massage mechanism according to claim 9, characterized in that, The mechanism housing includes a first housing assembly and a second housing assembly connected side by side along the first direction, the two massage groups are respectively disposed on the first housing assembly and the second housing assembly, the drive mechanism is disposed on the first housing assembly and / or the second housing assembly, and a connecting cavity is formed between the first housing assembly and the second housing assembly; The massage mechanism also includes a rotating shaft that is rotatably inserted through the connecting cavity to rotatably connect the first housing assembly and the second housing assembly.

12. The massage mechanism according to claim 11, characterized in that, The power assembly includes a motor and two transmission assemblies. The motor is disposed in the mounting cavity formed by the first housing assembly and the second housing assembly. The two transmission assemblies are respectively disposed in the first housing assembly and the second housing assembly. The motor is provided with a worm gear located in the connecting cavity and extending in a third direction. One end of each transmission assembly is connected to the worm gear, and the other end of each transmission assembly is connected to each swing arm. The two transmission assemblies drive the swing arm to swing in the first direction under the drive of the worm gear. The worm gear has the shaft at its end, and the third direction is configured to be perpendicular to the first direction and the second direction.

13. A waist massager, characterized in that, It includes a waist belt and a massage mechanism as described in any one of claims 1-12, wherein the massage mechanism is disposed on the waist belt.

14. The lumbar massager according to claim 13, characterized in that, Each of the massage heads extends along the width of the belt, and / or the swing arm of each of the massage heads is located at the middle of the width of the belt.

15. The lumbar massager according to claim 13, characterized in that, The belt includes a belt body and a pressure belt. The massage mechanism is disposed in the belt body. The pressure belt extends along the length of the belt and is at least partially disposed inside the belt body to abut against the distal skin surface of the mechanism housing. The pressure belt is used to provide pressure to the massage head of the massage mechanism.

16. The lumbar massager according to claim 15, characterized in that, Along the length of the belt, the projection of each massage head on the skin surface is within the projection range of the pressure band on the skin surface.

17. The lumbar massager according to claim 15, characterized in that, The belt has a clearance opening connecting its interior and exterior. The movement housing has connecting portions with through holes at both ends along the length of the belt. The two ends of the pressure belt pass through the through holes and the clearance opening respectively to be located outside the belt.

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