Waist massager

Abstract

The invention relates to a waist massager which comprises a shell, a circuit board, a rechargeable battery, a driving assembly, a connecting rod assembly and a massage assembly, the driving assembly drives the connecting rod assembly, and the connecting rod assembly drives the massage assembly; the driving assembly comprises a motor, two duplicate gears, two output gears and two output shafts, the motor is provided with a motor output shaft, the two duplicate gears are matched with worms arranged at the two ends of the motor output shaft respectively, and each duplicate gear is meshed with the corresponding output gear and drives the output gear. Each output gear is fixedly connected with a corresponding output shaft; a fixed eccentric part and a first movable eccentric part are fixedly arranged at the two ends of one output shaft, and the two ends of the other output shaft are also fixedly connected with the fixed eccentric part and movably connected with a second movable eccentric part; the driving assembly drives the connecting rod assembly to move; the connecting rod assembly drives the massage assembly to move.

Description

Technical Field

[0001] The present invention belongs to the technical field of massagers, and particularly relates to a miniaturized lumbar massager. Background Art

[0002] A massager is a new generation of health care equipment. It not only has eight simulation functions, allowing you to truly experience the wonderful feelings of eight functions including acupuncture, tuina (Chinese massage), massage, hammering, cupping, scraping, slimming, and immune regulation, but also has a unique effect in treating hypertension. With several independent soft massage heads, it can relax muscles, soothe nerves, promote blood circulation, strengthen cell metabolism, enhance skin elasticity, relieve fatigue, significantly reduce various chronic pains, acute pains, and muscle soreness, relax the body, relieve stress, and reduce skin wrinkles.

[0003] A portable lumbar massager is one of the commonly used massagers, usually a pneumatic or pulsed massager. However, the pneumatic massager has the problem of small massage force, and the force of the pulsed massager is uncontrollable. Most of the mechanical lumbar massagers on the market are of the type with rotating massage heads, with a single massage technique, a heavy and thick volume, poor experience, and low acceptance by users.

[0004] Therefore, it is very necessary to develop a miniaturized lumbar massager with diverse massage methods and better experience to solve the above problems. Summary of the Invention

[0005] In view of the above problems, the present invention provides a miniaturized lumbar massager to solve the problems of single massage method and poor experience of the existing lumbar massagers.

[0006] To achieve the above object, the present invention provides the following technical solution: Provide a lumbar massager, including a housing, a circuit board disposed in the housing, a rechargeable battery for powering the circuit board, and further including a drive assembly, a link assembly, and a massage assembly. The drive assembly drives the link assembly, and the link assembly drives the massage assembly to perform kneading massage on the waist.

[0007] The drive assembly includes a motor, two symmetrically arranged double gears, two symmetrically arranged output gears, and two symmetrically arranged output shafts. There is a motor output shaft on the motor. The two double gears are respectively engaged with the worms disposed at both ends of the motor output shaft. Each double gear meshes with a corresponding output gear and drives the output gear. Each output gear is fixedly connected to a corresponding output shaft. One end of one output shaft is fixedly connected to a fixed eccentric member and movably connected to a first movable eccentric member, and both ends of the other output shaft are also fixedly connected to another fixed eccentric member and a second movable eccentric member.

[0008] The two fixed eccentric members, the first movable eccentric member and the second movable eccentric member are all connected with a connecting rod assembly and drive the connecting rod assembly to move; each connecting rod assembly is connected with a corresponding massage assembly and drives the massage assembly to perform kneading motion.

[0009] As a further improvement of the present invention, it further includes a heating button for turning on the heating function of the massage assembly. The massage assembly includes a palm part and finger parts. A heating element is arranged inside the palm part. Pressing the heating button energizes the heating element to generate heat.

[0010] As a further improvement of the present invention, the fixed eccentric member is provided with an assembly hole, an eccentric shaft and a pin hole. The fixed eccentric member is assembled with the corresponding output shaft through the assembly hole, and a first pin passes through the pin hole and is fixedly connected with the output shaft, so as to fix the fixed eccentric member on the output shaft.

[0011] As a further improvement of the present invention, the first movable eccentric member and the second movable eccentric member are respectively provided with an assembly hole, an eccentric shaft and a limiting groove. The first movable eccentric member and the second movable eccentric member are respectively movably assembled with the output shaft through the assembly hole. A second pin respectively passes through the limiting grooves of the first movable eccentric member and the second movable eccentric member and is fixedly connected with the output shaft. The limiting groove restricts the second pin from rotating in the limiting groove; when the motor rotates forward, when the second pin rotates to one end of the limiting groove, the massage assemblies arranged on the same output shaft perform kneading motion synchronously; when the motor rotates reversely, when the second pin rotates to the other end of the limiting groove, the massage assemblies arranged on the same output shaft perform kneading motion alternately. [[ID=I1]]

[0012] As a further improvement of the present invention, each connecting rod assembly includes a first connecting rod, a second connecting rod, a third connecting rod and a connecting rod fixed seat. On one side of the driving assembly, one end of the first connecting rod is respectively movably connected with the eccentric shaft of the fixed eccentric member. On the other side of the driving assembly, one end of the first connecting rod is respectively movably connected with the eccentric shafts of the first movable eccentric member and the second movable eccentric member; the other end of the first connecting rod is movably connected with the upper part of the second connecting rod; the middle part of the second connecting rod is movably connected with the connecting rod fixed seat, and the lower part of the second connecting rod is movably connected with a support seat arranged on the massage assembly; one end of the third connecting rod is movably connected with the connecting rod fixed seat, and the other end is movably connected with the support seat of the massage assembly.

[0013] As a further improvement of the present invention, the connecting rod assembly further includes a soft protective sleeve, and the soft protective sleeve covers the support seat, the second connecting rod and the third connecting rod.

[0014] As a further improvement of the present invention, the finger part is an elastic finger, with a support member inside the finger part and a soft material wrapped outside.

[0015] As a further improvement of the present invention, a charging interface electrically connected to the circuit board is further provided on the housing, and an external power source charges the rechargeable battery through the charging interface.

[0016] To achieve the above object, the present invention provides another technical solution as follows: There is provided a waist massager, including a housing, a circuit board disposed inside the housing, a rechargeable battery for supplying power to the circuit board, and further including a driving assembly, a connecting rod assembly, and a massage assembly. The driving assembly drives the connecting rod assembly, and the connecting rod assembly drives the massage assembly to knead and massage the waist; the driving assembly includes a motor, two symmetrically arranged double-gear wheels, two symmetrically arranged output gears, and two symmetrically arranged output shafts. The motor is provided with a motor output shaft. The two double-gear wheels are respectively engaged with worms disposed at both ends of the motor output shaft. Each double-gear wheel meshes with a corresponding output gear and drives the output gear. Each output gear is fixedly connected to a corresponding output shaft; both ends of one output shaft are fixedly connected with a fixed eccentric member and movably connected with a first movable eccentric member, and both ends of the other output shaft are also fixedly connected with another fixed eccentric member and movably connected with a second movable eccentric member;

[0017] The two fixed eccentric members, the first movable eccentric member, and the second movable eccentric member are all connected with a connecting rod assembly and drive the connecting rod assembly to move; each connecting rod assembly is connected to a corresponding massage assembly and drives the massage assembly to perform a kneading motion;

[0018] The first movable eccentric member and the second movable eccentric member are both provided with limit slots. A pin respectively passes through the limit slots of the first movable eccentric member and the second movable eccentric member and is fixedly connected to the output shaft. The limit slots limit the rotation of the pin in the limit slots; when the motor rotates forward, when the pin rotates to one end of the limit slot, the two massage assemblies disposed on the same output shaft perform a kneading motion synchronously; when the motor rotates backward, when the pin rotates to the other end of the limit slot, the two massage assemblies disposed on the same output shaft perform a kneading motion alternately.

[0019] As a further improvement of the present invention, each link assembly includes a first link, a second link, a third link and a link fixing seat. On one side of the driving assembly, one end of the first link is respectively movably connected to the eccentric shaft of the fixed eccentric member. On the other side of the driving assembly, one end of the first link is respectively movably connected to the eccentric shafts of the first movable eccentric member and the second movable eccentric member; the other end of the first link is movably connected to the upper part of the second link; the middle part of the second link is movably connected to the link fixing seat, and the lower part of the second link is movably connected to the support seat provided on the massage assembly; one end of the third link is movably connected to the link fixing seat, and the other end is movably connected to the support seat of the massage assembly.

[0020] Technical effects and advantages of the lumbar massager of the present invention:

[0021] 1. An eccentric member is installed at the output shaft end, and the eccentric member drives the second link to swing back and forth through the first link; the rotating shafts of the second link and the third link are rotatably movably connected to the link fixing seat; the massage assembly is movably connected to the second link and the third link, and the massage assembly moves back and forth under the drive of the second link, combining to form a kneading action, and the movement mode is stable and reliable.

[0022] 2. The massage assembly is provided with a soft protective cover to prevent harm to the human body.

[0023] 3. Arc-shaped protective surfaces are respectively provided on the outer sides of the second link and the third link, and the axis of the arc-shaped surface is coaxial with the rotation axis of the link. During the entire operation cycle, the inside of the machine body can be isolated from the outside to prevent mechanical movement from causing harm to the human body and prevent foreign objects from entering the machine body and causing damage.

[0024] 4. The lumbar massager of the present invention has one less motor than the prior art, with a reduced weight, meeting the requirement that the waist cannot bear too much weight; compared with the two motors and two sets of cumbersome drive systems of the prior art, the lumbar massager of the present invention has a reduced volume and a reduced cost.

[0025] 5. The present invention realizes the switching between the synchronous operation and the staggered operation of the massage assembly by changing the forward and reverse rotation of the motor. The massage method is relaxed and tense, and consumers feel very comfortable. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 Shows a perspective view of an embodiment of the lumbar massager of the present invention.

[0028] Figure 2 Shows another perspective view of an embodiment of the lumbar massager of the present invention.

[0029] Figure 3 Shows a schematic diagram of a partially disassembled structure of an embodiment of the lumbar massager of the present invention.

[0030] Figure 4 Shows another schematic diagram of a partially disassembled structure of an embodiment of the lumbar massager of the present invention.

[0031] Figure 5 Shows a cross-sectional view of an embodiment of the lumbar massager of the present invention.

[0032] Figure 6 Shows another cross-sectional view of an embodiment of the lumbar massager of the present invention.

[0033] Figure 7 Shows a cross-sectional view of the drive assembly of an embodiment of the lumbar massager of the present invention.

[0034] Figure 8 Shows another cross-sectional view of the drive assembly of an embodiment of the lumbar massager of the present invention.

[0035] Figure 9 Shows a perspective view of the first movable eccentric member of the drive assembly of an embodiment of the lumbar massager of the present invention.

[0036] Figure 10 Shows a perspective view of the second movable eccentric member of the drive assembly of an embodiment of the lumbar massager of the present invention.

[0037] Figure 11 Shows a perspective view of the fixed eccentric member of the drive assembly of an embodiment of the lumbar massager of the present invention.

[0038] Figure 12 Shows a perspective view of the drive assembly of an embodiment of the lumbar massager of the present invention, at this time the motor is rotating forward.

[0039] Figure 13 Shows an assembly drawing of the drive assembly, the link assembly and the massage assembly of an embodiment of the lumbar massager of the present invention, at this time the motor is rotating forward.

[0040] Figure 14 Shows a perspective view of the drive assembly of an embodiment of the lumbar massager of the present invention, at this time the motor is rotating in reverse.

[0041] Figure 15 Shows an assembly drawing of the drive assembly, the link assembly and the massage assembly of an embodiment of the lumbar massager of the present invention, at this time the motor is rotating in reverse.

[0042] Figure 16 Shows another assembly diagram of the drive assembly, link assembly and massage assembly of the lumbar massager embodiment of the present invention.

[0043] Figure 17 Shows a cross-sectional view of the link assembly and massage assembly of the lumbar massager embodiment of the present invention.

[0044] Figure 18 Shows a three-dimensional view of the drive assembly and link assembly of the lumbar massager embodiment of the present invention after assembly. Detailed implementation manners

[0045] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0046] As Figures 1 to 4 and Figure 6 shown, the present invention provides a lumbar massager 100, which includes a housing 10, a circuit board 20 disposed inside the housing 10, a rechargeable battery 30 for supplying power to the circuit board 20, a drive assembly 40, four sets of link assemblies 50, and four sets of massage assemblies 60.

[0047] Both ends of the housing 10 are provided with long strip-shaped positioning holes 11 for the straps to pass through, and the straps position the lumbar massager 100 on the user's waist to massage the waist.

[0048] A power button 12 and a heating button 14 are provided on the housing 10, and the circuit board 20 and the rechargeable battery 30 electrically connected to the circuit board 20 are both disposed inside the housing 10. A charging interface 13 (generally type-c, or other types) disposed between the power button 12 and the heating button 13 is connected to the circuit board 20 and charges the rechargeable battery 30. The rechargeable battery 30 is generally a lithium-ion battery, or can be other types of rechargeable batteries.

[0049] The drive assembly 40 is a gearbox with a motor. A motor 41 is provided inside the gearbox housing, and the rechargeable battery 30 powers the motor 41. A motor output shaft 412 is provided on the motor 41. In this embodiment, the worm screw directions at both ends of the motor output shaft 412 are opposite, that is, one end is left-handed and the other end is right-handed. It can be understood that the worm screw directions at both ends of the motor output shaft 412 can also be the same. A double gear 42 that mates with the worm is symmetrically provided at each end of the motor output shaft 412. Each double gear 42 meshes with an output gear 43 and drives the output gear 43, and each output gear 43 is arranged inside the gearbox housing. Each output gear 43 is fixedly connected to an output shaft 45 (or called the gearbox output shaft) through a gear fixing pin 44. Fixed eccentric members 46 are fixedly connected to both ends of one output shaft 45, and a first movable eccentric member 47a is movably connected. Fixed eccentric members 46 are also fixedly connected to both ends of the other output shaft 45, and a second movable eccentric member 47b is movably connected. The two fixed eccentric members 46 are respectively fixed to the output shaft 45 through first pins 464; the first and second movable eccentric members 47a, 47b are respectively connected to the output shaft 45 through second pins 48. The gears inside the gearbox are arranged symmetrically left and right, the helix directions of the corresponding gears on both sides are opposite, and the helix directions of the left and right output shafts are opposite. Please refer to Figures 6 to 8 .

[0050] As Figures 9 to 12 shown, the fixed eccentric member 46 is provided with an assembly hole 461, an eccentric shaft 462, and a pin hole 463. The fixed eccentric member 46 is assembled with the corresponding output shaft 45 through the assembly hole 461, and the first pin 464 passes through the pin hole 463 and is fixedly connected to the output shaft 45, thereby fixing the fixed eccentric member 46 on the output shaft 45.

[0051] The first movable eccentric member 47a and the second movable eccentric member 47b are respectively provided with assembly holes 471a, 471b, eccentric shafts 472a, 472b and limit grooves 473a, 473b. The first movable eccentric member 47a and the second movable eccentric member 47b are respectively movably assembled with the output shaft 45 through the assembly holes 471a, 471b thereon. The structures of the first movable eccentric member 47a and the second movable eccentric member 47b are basically the same, and the sizes, included angles and lengths of their limit grooves 473a, 473b are the same. The difference is that the grooving positions of their limit grooves 473a, 473b on the same circumference are different (the angles of the limit grooves are the same and can be set as required). A second pin 48 respectively passes through the limit grooves 473a, 473b of the first movable eccentric member 47a and the second movable eccentric member 47b and is connected to the output shaft 45. The second pin 48 can only rotate within the two ends of the limit grooves 473a, 473b so as to limit the first movable eccentric member 47a and the second movable eccentric member 47b on the output shaft 45. The difference between the first movable eccentric member 47a and the second movable eccentric member 47b lies in that: assuming that a plane is generated by simultaneously passing through the axis of the eccentric shaft and the axis of the output shaft, the limit grooves on the first movable eccentric member and the second movable eccentric member are symmetric with respect to this plane.

[0052] Such as Figure 5 , Figures 13 to 18As shown, the connecting rod assembly 50 has four groups and each group has the same structure. Each group of the connecting rod assemblies 50 is respectively movably connected to the driving assembly 40 and the massage assembly 60. Each connecting rod assembly 50 includes a first connecting rod 51, a second connecting rod 52, and a third connecting rod 53. On one side of the driving assembly 40, one end of the first connecting rod 51 is respectively movably connected to the eccentric shaft 462 of the fixed eccentric member 46. On the other side of the driving assembly 40, one end of the first connecting rod 51 is respectively movably connected to the eccentric shafts 472a and 472b of the first movable eccentric member 47a and the second movable eccentric member 47b; the other end of the first connecting rod 51 is movably connected to the upper part of the second connecting rod 52 through a rotating shaft; one end of the middle part of the second connecting rod 52 is movably connected to the connecting rod fixed seat 55 through a rotating shaft, and one end of the lower part of the second connecting rod 52 is movably connected to the support seat 65 of the massage assembly 60 through a rotating shaft; one end of the upper part of the third connecting rod 53 is movably connected to the connecting rod fixed seat 55 through a rotating shaft, and one end of the lower part of the third connecting rod 53 is also movably connected to the support seat 65 of the massage assembly 60 through a rotating shaft; the second connecting rod 52 drives the support seat 65 to move, and the support seat 65 drives the third connecting rod 53 to move. The function of the third connecting rod 53 is to stabilize the movement of the support seat 65, so that the massage assembly 60 can perform the kneading action more stably. In addition, arc-shaped protective surfaces are respectively provided on the outer sides of the second connecting rod 52 and the third connecting rod 53. The axis of the arc-shaped protective surface is coaxial with the rotation axes of the second connecting rod 52 and the third connecting rod 53. During the entire operation cycle, the inside and outside of the machine body can be isolated to prevent mechanical movement from causing harm to the human body and prevent foreign objects from entering the machine body and causing damage. Please refer to Figure 5 。

[0053] Please continue to refer to Figure 5 , the massage assembly 60 includes a palm part 61, finger parts 62, a soft protective sleeve 63, and a support seat 65 for supporting the palm part 61 and the finger parts 62. The palm part 61 is arranged on the support seat 65. A heating element (heating wire) is arranged inside the palm part 61. After being powered on, the heating element makes the palm part 61 generate heat. The finger parts 62 are elastic fingers, with a flat support member inside and a soft material wrapped outside to prevent damage to the waist. The soft protective sleeve 63 covers the support seat 65, the second connecting rod 52, and the third connecting rod 53 to prevent pinching the user and avoid injury to the user. The palm part 61 and the finger parts 62 imitate a person's palm and fingers to massage the waist when massaging the waist. The soft protective sleeve 63 is generally made of cloth or leather, and other materials can also be used.

[0054] When the operator needs to massage the waist, first tie the waist massager 100 to the waist with a strap, and then press the power button 12, as Figure 1 、 Figure 7 、 Figure 12 andFigure 13 As shown, after power is supplied to the motor 41, it rotates forward, driving the motor output shaft 412 to rotate forward. The worms at both ends of the motor output shaft 412 rotate in opposite directions, causing the duplex gears 42 at both ends to rotate in opposite directions (one duplex gear rotates counterclockwise, the other rotates clockwise). Each duplex gear 42 in turn drives the corresponding output gear 43 to rotate. Each output gear 43 in turn drives the output shaft 45 fixed to the center of the output gear 43 to rotate. The fixed eccentric member fixed to one end of each output shaft 45 also rotates synchronously, as does the first movable eccentric member 47a connected to the other end of one output shaft 45 and the second movable eccentric member 47b connected to the other end of the other output shaft 45. At this time, the second latch 48 abuts against one end of the limiting slots 473a and 473b, respectively. At the same time, the first link 51 connected to the eccentric shaft 462 of the fixed eccentric member 46 is driven by the eccentric shaft 462 to rotate, and the first link 51 drives the second link 52 pivotally connected to the first link 51 to rotate, and the second link 52 in turn drives the massage assembly 60 and the third link 53 to move, and the massage assembly 60 is driven to achieve the palm portion 61 and the finger portion 62 to massage the user's waist; and the first link 51 movably connected to the eccentric shafts 472a and 472b of the first movable eccentric member 47a and the second movable eccentric member 47b is driven by the eccentric shaft 472a and 472b thereon. 72a and 472b are driven to rotate, and the first connecting rod 51 drives the second connecting rod 52 connected to the first connecting rod 51 to rotate. The second connecting rod 52 in turn drives the massage assembly 60 and the third connecting rod 53 to move. The massage assembly 60 is driven to realize the kneading massage of the user's waist by the finger portion 62 and the palm portion 61. In this way, the opening and closing movements of the massage assembly 60 set on the same output shaft 45 are synchronized, that is, at any position during operation, the opening and closing angles of the two groups of massage assemblies 60 are the same. Moreover, the four groups of massage assemblies 60 are combined to form a kneading action on different positions of the waist. At this time, the eccentric shaft 462 on one of the fixed eccentric members 46 and the eccentric shaft 472a on the corresponding first movable eccentric member 47a are on the same axis E1; the eccentric shaft 462 on the other fixed eccentric member 46 and the eccentric shaft 472b on the corresponding second movable eccentric member 47b are on the same axis E2. Figure 12 shown.

[0055] If the user feels that the palm 61 is relatively cold, the user can press the heating button 14, and the heating wire inside the palm 61 will be energized and heated, so that the user's waist can be heated while massaging, and the user feels very comfortable.

[0056] In this embodiment, press the power button 12 again. Figure 1 、 Figure 14and Figure 15 As shown, the motor 41 rotates in the reverse direction, driving the motor output shaft 412 to rotate in the reverse direction; the fixed eccentric members 46 fixed to one end of each output shaft 412 also rotate in the reverse direction synchronously. However, when the second pins 48 in the limiting grooves 473a and 473b of the first movable eccentric member 47a and the second movable eccentric member 47b respectively rotate synchronously to the other ends of the corresponding limiting grooves 473a and 473b, the first movable eccentric member 47a connected to the other end of one output shaft 45 only rotates in the reverse direction synchronously, and the second movable eccentric member 47b connected to the other end of the other output shaft 45 also rotates in the reverse direction synchronously. At this time, the movement of the fixed eccentric member 46 is asynchronous and staggered with the movement of the first movable eccentric member 47a and the second movable eccentric member 47b. In this way, the connecting rod assembly 50 and the massage assembly 60 on the eccentric shaft 462 connected to the fixed eccentric member 46 move synchronously, and the connecting rod assembly 50 and the massage assembly 60 on the eccentric shafts 472a and 472b connected to the first movable eccentric member 47a and the second movable eccentric member 47b also move synchronously; the connecting rod assembly 50 and the massage assembly 60 on the eccentric shaft 462 connected to the fixed eccentric member 46 and the connecting rod assembly 50 and the massage assembly 60 on the eccentric shafts 472a and 472b connected to the first movable eccentric member 47a and the second movable eccentric member 47b move in a staggered manner, so as to realize the staggered massage of the user's waist, and the massage method is relaxed and tense, making the consumer feel very comfortable. At this time, the eccentric shaft 462 on one fixed eccentric member 46 and the eccentric shaft 472a on its corresponding first movable eccentric member 47a are not on the same axis, that is, they are not coaxial; the eccentric shaft 462 on the other fixed eccentric member 46 and the eccentric shaft 472b on its corresponding second movable eccentric member 47b are also not on the same axis, that is, they are not coaxial.

[0057] Since the massage assembly 60 will generate resistance during actual use, when the output shaft 45 switches between forward and reverse rotations, the abutment of the second pin 48 in the limiting grooves 473a and 473b will respectively turn from one end of the limiting grooves 473a and 473b to the other end, so that the first and second movable eccentric members 47a and 47b rotate a certain angle relative to the output shaft 45, and this angle is the movable angle of the limiting grooves 473a and 473b.

[0058] When the user does not use the lumbar massager 100 and presses the power button 12 for a long time, the lumbar massager 100 shuts down and the motor 41 stops moving.

[0059] It can be understood that the forward and reverse rotation modes of the motor 41 of the lumbar massager 100 can also be set, for example, the time is set on the controller of the circuit board 20, for example, it appears once every five minutes or eight minutes or ten minutes, etc. It is not limited to pressing the power button 12 once.

[0060] It can be understood that the first movable eccentric member 47a and the second movable eccentric member 47b can also be replaced with the fixed eccentric member 46, that is, the four groups of drive assemblies 40 move synchronously whether rotating forward or backward to form a kneading action without interleaved movement, which is also a feasible way.

[0061] Compared with the existing massagers, the waist massager of the present invention has obvious beneficial technical effects: 1. An eccentric member is installed at the output shaft end, and the eccentric member drives the second connecting rod to swing back and forth through the first connecting rod; the rotating shafts on the second connecting rod and the third connecting rod are rotatably and movably connected to the connecting rod fixing seat; the massage assembly is movably connected to the second connecting rod and the third connecting rod through rotating shafts, and the massage assembly moves back and forth under the drive of the second connecting rod, combining to form a kneading action, and the movement mode is stable and reliable. 2. The massage assembly is provided with a soft protective cover to prevent harm to the human body. 3. Arc-shaped protective surfaces are respectively provided on the outer sides of the second connecting rod and the third connecting rod, and the axis of the arc-shaped surface is coaxial with the rotation axis of the connecting rod, and the inside of the machine body can be isolated from the outside during the entire operation cycle to prevent mechanical movement from causing harm to the human body and prevent foreign objects from entering the machine body and causing damage. 4. The waist massager of the present invention has one less motor than the prior art, the weight is reduced, meeting the requirement that the waist cannot bear too much weight; compared with the two motors and two sets of cumbersome drive systems of the prior art, the waist massager of the present invention has a reduced volume and a reduced cost. 5. The present invention realizes the switching between the synchronous operation and the interleaved operation of the massage assembly by changing the forward and reverse rotation of the motor, and the massage method is relaxed and tense, making consumers feel very comfortable.

[0062] Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A waist massager comprising a housing, a circuit board disposed within the housing, and a rechargeable battery for powering the circuit board, characterized in that: It further includes a driving component, a connecting rod component, and a massage component. The driving component drives the connecting rod component, and the connecting rod component drives the massage component to knead and massage the waist. The driving component includes a motor, two symmetrically arranged double gears, two symmetrically arranged output gears, and two symmetrically arranged output shafts. There is a motor output shaft on the motor. The two double gears are respectively engaged with the worms arranged at both ends of the motor output shaft. Each double gear meshes with a corresponding output gear and drives the output gear. Each output gear is fixedly connected to a corresponding output shaft. One end of one output shaft is fixedly connected with a fixed eccentric part and movably connected with a first movable eccentric part, and both ends of the other output shaft are also fixedly connected with another fixed eccentric part and a second movable eccentric part. The two fixed eccentric parts, the first movable eccentric part, and the second movable eccentric part are all connected with a connecting rod component and drive the connecting rod component to move. Each connecting rod component is connected with a corresponding massage component and drives the massage component to perform a kneading motion.

2. The lumbar massager according to claim 1, characterized in that: It further includes a heating button for turning on the heating function of the massage component. The massage component includes a palm part and a finger part. A heating element is arranged inside the palm part. Pressing the heating button energizes the heating element to generate heat.

3. The lumbar massager according to claim 1, wherein: The fixed eccentric part is provided with an assembly hole, an eccentric shaft, and a pin hole. The fixed eccentric part is assembled with the corresponding output shaft through the assembly hole, and a first pin passes through the pin hole and is fixedly connected with the output shaft, so as to fix the fixed eccentric part on the output shaft.

4. The lumbar massager according to claim 1, wherein: The first movable eccentric part and the second movable eccentric part are respectively provided with an assembly hole, an eccentric shaft, and a limiting groove. The first movable eccentric part and the second movable eccentric part are respectively movably assembled with the output shaft through the assembly hole. A second pin respectively passes through the limiting grooves of the first movable eccentric part and the second movable eccentric part and is fixedly connected with the output shaft. The limiting groove restricts the second pin from rotating in the limiting groove. When the motor rotates forward, when the second pin rotates to one end of the limiting groove, the massage components arranged on the same output shaft perform a kneading motion synchronously. When the motor rotates backward, when the second pin rotates to the other end of the limiting groove, the massage components arranged on the same output shaft perform a kneading motion alternately.

5. The lumbar massager according to claim 1, wherein: Each link assembly includes a first link, a second link, a third link and a link fixing seat. On one side of the driving assembly, one end of the first link is respectively movably connected to the eccentric shaft of the fixed eccentric member. On the other side of the driving assembly, one end of the first link is respectively movably connected to the eccentric shafts of the first movable eccentric member and the second movable eccentric member; the other end of the first link is movably connected to the upper part of the second link; the middle part of the second link is movably connected to the link fixing seat, and the lower part of the second link is movably connected to the support seat provided on the massage assembly; one end of the third link is movably connected to the link fixing seat, and the other end is movably connected to the support seat of the massage assembly.

6. The lumbar massager according to claim 5, wherein: The link assembly further includes a soft protective sleeve that covers the support seat, the second link and the third link.

7. The waist massager according to claim 2, characterized in that: The finger part is an elastic finger, with a support member inside and a soft material wrapped outside.

8. The lumbar massager according to claim 1, wherein: The housing is further provided with a charging interface electrically connected to the circuit board, and an external power supply charges the rechargeable battery through the charging interface.

9. A lumbar massager, comprising a housing, a circuit board disposed within the housing, and a rechargeable battery for powering the circuit board, characterized in that: It also includes a driving assembly, a link assembly, and a massage assembly. The driving assembly drives the link assembly, and the link assembly drives the massage assembly to knead and massage the waist. The driving assembly includes a motor, two symmetrically arranged double gears, two symmetrically arranged output gears and two symmetrically arranged output shafts. The motor is provided with a motor output shaft. The two double gears are respectively engaged with the worms arranged at both ends of the motor output shaft. Each double gear meshes with a corresponding output gear and drives the output gear. Each output gear is fixedly connected to a corresponding output shaft; one end of each of the two output shafts is fixedly connected with a fixed eccentric member and movably connected with a first movable eccentric member, and the two ends of the other output shaft are also fixedly connected with another fixed eccentric member and movably connected with a second movable eccentric member. The two fixed eccentric members, the first movable eccentric member and the second movable eccentric member are all connected to a link assembly and drive the link assembly to move; each link assembly is connected to a corresponding massage assembly and drives the massage assembly to perform a kneading motion. The first movable eccentric member and the second movable eccentric member are both provided with limiting grooves. A pin respectively passes through the limiting grooves of the first movable eccentric member and the second movable eccentric member and is fixedly connected to the output shaft. The limiting grooves limit the rotation of the pin in the limiting grooves; when the motor rotates forward, when the pin rotates to one end of the limiting groove, the two massage assemblies arranged on the same output shaft perform a kneading motion synchronously; when the motor rotates backward, when the pin rotates to the other end of the limiting groove, the two massage assemblies arranged on the same output shaft perform a kneading motion alternately.

10. The lumbar massager according to claim 9, wherein: Each link assembly includes a first link, a second link, a third link and a link fixing seat. On one side of the drive assembly, one end of the first link is respectively movably connected to the eccentric shaft of the fixed eccentric member. On the other side of the drive assembly, one end of the first link is respectively movably connected to the eccentric shafts of the first movable eccentric member and the second movable eccentric member; the other end of the first link is movably connected to the upper part of the second link; the middle part of the second link is movably connected to the link fixing seat, and the lower part of the second link is movably connected to the support seat provided on the massage assembly; one end of the third link is movably connected to the link fixing seat, and the other end is movably connected to the support seat of the massage assembly.

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