Movement assembly and waist and back massager

Abstract

The utility model discloses a machine core assembly and a waist and back massager, and relates to the technical field of massagers, the machine core assembly is applied to the waist and back massager, the machine core assembly comprises a rack assembly and a moving assembly, the moving assembly comprises a driving piece, a first gear set, a second gear set and a massage head, and the first gear set is meshed with a driving shaft of the driving piece; the second gear set comprises a first gear, a second connecting shaft and a second gear, the first gear is connected to the first gear set in a meshed mode, one end of the second connecting shaft is connected to the first gear, the other end of the second connecting shaft is connected to the first gear in the same axis direction so as to drive the second gear to rotate, and the second connecting shaft is located on the outer side of the rack assembly. The second gear is meshed with the rack assembly; the massage head is connected to an output shaft of the first gear so as to rotate along with the first gear; the driving part can drive the moving assembly to move in the extension direction of the rack assembly. The weight of the waist and back massager can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of massagers, in particular to a core component and a waist and back massager. Background Art

[0002] The movement component of the waist and back massager drives the movement of the massage head, thereby simulating the massage and kneading techniques of human hands to relax the acupuncture points on the waist and relieve fatigue and soreness.

[0003] In the related art, the back massager includes a cushion body and a movement assembly, the movement assembly includes a rack assembly and a moving assembly, the rack assembly is installed on the cushion body, the moving assembly includes a driving motor, a first gear set, a second gear set, a third gear set and a massage head, the driving motor drives the first gear set to rotate, the second gear set rotates under the transmission of the first gear set, and the third gear set is connected to the second gear set. On this basis, the massage head is connected to the second gear set to rotate and knead the human body, and the third gear set and the rack assembly are meshed to realize the overall translation of the movement assembly.

[0004] However, since the second gear set and the third gear set are separately arranged, in order to realize the axially offset transmission output of the output gears of the two, other transmission gears are required as a transition, resulting in a large number of parts in the movement assembly, which is not conducive to realizing the miniaturization of the movement assembly and reducing the weight of the waist and back massager. Utility Model Content

[0005] The main purpose of the utility model is to provide a movement assembly, aiming to reduce the number of parts of the movement assembly, realize the miniaturization of the movement assembly, and reduce the weight of the waist and back massager, thereby improving the portability of the waist and back massager.

[0006] To achieve the above-mentioned purpose, the utility model provides a movement component, which is applied to a waist and back massager, and the movement component includes a rack component and a moving component, and the moving component includes a driving member, a first gear group, a second gear group and a massage head, the first gear group is meshed with the driving shaft of the driving member; the second gear group includes a first gear, a second connecting shaft and a second gear, the first gear is meshed and connected to the first gear group, one end of the second connecting shaft is connected to the first gear, and the other end is connected to the first gear along the same axial direction to drive the second gear to rotate, the second connecting shaft is located on the outside of the rack assembly, and the second gear is meshed with the rack assembly; the massage head is connected to the output shaft of the first gear to rotate with the first gear; wherein, the driving member can drive the moving component to move along the extension direction of the rack assembly.

[0007] In one embodiment, a relief portion is axially disposed around the second connecting shaft, and a driving shaft of the driving member passes through the relief portion and is drivingly connected to the first gear set.

[0008] In one embodiment, the first gear set includes a third gear, a first connecting shaft and a fourth gear, the third gear is transmission-connected to the driving shaft of the driving member, one end of the first connecting shaft is connected to the third gear, and the other end is connected to the fourth gear to drive the fourth gear to rotate, and the fourth gear is meshed with the first gear.

[0009] In one embodiment, the third gear is a helical gear, the driving shaft is a screw rod, and the screw rod extends in a direction perpendicular to the rack assembly and is meshedly connected with the helical gear.

[0010] In one embodiment, the rack assembly includes two racks, the two racks are arranged opposite to each other along two sides, the number of drive shafts of the driving member is two, the two drive shafts are arranged at intervals along the length direction perpendicular to the rack assembly, the number of the first gear group, the second gear group, and the massage head are respectively two, one drive shaft is meshedly connected to one first gear group, one first gear group is meshedly connected to one first gear, one output shaft of the first gear is connected to one massage head, and one second gear is meshedly connected to one rack.

[0011] In one embodiment, the driving member includes a driving motor, which is slidably connected to the rack assembly along the length direction of the rack assembly, and a driving shaft is respectively provided at two opposite ends of the driving motor perpendicular to the length direction of the rack assembly.

[0012] The utility model also provides a waist and back massager, which comprises a cushion body and the core assembly as described above, wherein the storage groove is used to accommodate the core assembly, and the rack assembly is fixedly connected to the cushion body.

[0013] In one embodiment, the waist and back massager further comprises a buffer, which is fixedly connected to the cushion body and is located on a side of the massage head away from the rack assembly, and the buffer is used to cover a portion of the storage groove, and the buffer and the cushion body enclose a first accommodating space;

[0014] In one embodiment, the waist and back massager further includes a first heating element, which is disposed in the storage groove and stacked with the buffer element.

[0015] In one embodiment, the waist and back massager further includes a second heating element, and the second heating element is connected to a side of the massage head facing the first gear.

[0016] In the technical solution of the utility model, the driving shaft of the driving member meshes and drives the first gear set, and the first gear set meshes and is connected to the first gear of the second gear set, and the first gear drives the second gear to rotate through the second connecting shaft. On this basis, the massage head is connected to the first gear for rotation and kneading, and the second gear and the rack assembly mesh for translation.

[0017] It is worth mentioning that the first gear and the second gear are connected as a whole on the same axis through the second connecting shaft, thereby realizing axially staggered transmission output, avoiding other transmission gears as transitions, reducing the number of parts of the movement assembly, and facilitating the miniaturization of the movement assembly and reducing the weight of the waist and back massager, thereby facilitating improving the portability of the waist and back massager. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 This is a structural schematic diagram of an embodiment of a waist and back massager provided by the utility model;

[0020] Figure 2 for Figure 1 A schematic structural diagram of the waist and back massager from another perspective;

[0021] Figure 3 for Figure 1 The cross-sectional structure diagram of the waist and back massager shown;

[0022] Figure 4 for Figure 1 Schematic diagram of the structure of the middle movement assembly;

[0023] Figure 5 for Figure 1 Schematic diagram of the exploded structure of the waist and back massager;

[0024] Figure 6 for Figure 5 An exploded structural diagram of the middle driving member, the first gear set and the second gear set;

[0025] Figure 7 for Figure 5 Schematic diagram of the structure of the storage unit.

[0026] Description of Figure Numbers:

[0027]

[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0032] The movement component of the waist and back massager drives the movement of the massage head, thereby simulating the massage and kneading techniques of human hands to relax the acupuncture points on the waist and relieve fatigue and soreness.

[0033] In the related art, the back massager includes a cushion body and a movement assembly, the movement assembly includes a rack assembly and a moving assembly, the rack assembly is installed on the cushion body, the moving assembly includes a driving motor, a first gear set, a second gear set, a third gear set and a massage head, the driving motor drives the first gear set to rotate, the second gear set rotates under the transmission of the first gear set, and the third gear set is connected to the second gear set. On this basis, the massage head is connected to the second gear set to rotate and knead the human body, and the third gear set and the rack assembly are meshed to realize the overall translation of the movement assembly.

[0034] However, since the second gear set and the third gear set are separately arranged, in order to realize the axially offset transmission output of the output gears of the two, other transmission gears are required as a transition, resulting in a large number of parts in the movement assembly, which is not conducive to realizing the miniaturization of the movement assembly and reducing the weight of the waist and back massager.

[0035] In order to solve the above problems, the present invention proposes a movement assembly 10, which aims to reduce the number of parts of the movement assembly 10, realize the miniaturization of the movement assembly 10, and reduce the weight of the waist and back massager 100, thereby improving the portability of the waist and back massager 100.

[0036] Reference Figures 1 to 7 In one embodiment of the utility model, the movement assembly 10 is applied to a waist and back massager 100, and the movement assembly 10 includes a rack assembly 6 and a moving assembly, and the moving assembly includes a driving member 1, a first gear group 3, a second gear group 4 and a massage head 7, and the first gear group 3 is meshed with the driving shaft 131 of the driving member 1; the second gear group 4 includes a first gear 41, a second connecting shaft 43 and a second gear 45, the first gear 41 is meshed and connected to the first gear group 3, one end of the second connecting shaft 43 is connected to the first gear 41, and the other end is connected to the first gear 41 along the same axial direction to drive the second gear 45 to rotate, the second connecting shaft 43 is located on the outside of the rack assembly 6, and the second gear 45 is meshed with the rack assembly 6; the massage head 7 is connected to the output shaft of the first gear 41 to rotate with the first gear 41; wherein, the driving member 1 can drive the moving assembly to move along the extension direction of the rack assembly 6.

[0037] The core assembly 10 is used to drive the massage head 7 to walk and rotate, and can be applied to the waist and back massager 100 to achieve walking and kneading of the back of the human body. In addition, all other massagers that utilize the core assembly 10 to achieve walking and kneading of the human body also fall within the protection scope of the present utility model.

[0038] In the technical solution of the utility model, the driving shaft 131 of the driving member 1 meshes and drives the first gear set 3, and the first gear set 3 is meshed and connected to the first gear 41 of the second gear set 4, and the first gear 41 drives the second gear 45 to rotate through the second connecting shaft 43. On this basis, the massage head 7 is connected to the first gear 41 for rotation and kneading, and the second gear 45 is meshed with the rack assembly 6 for translation.

[0039] It is worth mentioning that the first gear 41 and the second gear 45 are connected as a whole on the same axis through the second connecting shaft 43, thereby realizing axially dislocated transmission output, avoiding other transmission gears as transition, reducing the number of parts of the movement assembly 10, and being beneficial to realizing the miniaturization of the movement assembly 10, and reducing the weight of the waist and back massager 100, thereby being beneficial to improving the portability of the waist and back massager 100.

[0040] See also Figure 4 In one embodiment of the utility model, the second connecting shaft 43 is axially provided with an escape portion 431 , the driving shaft 131 of the driving member 1 is passed through the escape portion 431 , and is drivingly connected to the first gear set 3 .

[0041] In this embodiment, an avoidance portion 431 is provided on the axial ring of the second connecting shaft 43. The avoidance portion 431 is an axial recessed portion. The avoidance portion 431 provides a setting space for the driving shaft 131 of the driving member 1. The driving shaft 131 drives the first gear set 3 through the avoidance portion 431. The first gear set 3 drives the second gear set 4 to rotate, thereby realizing the rotation of the second gear 45 and the first gear 41 of the second gear set 4, which is conducive to further realizing the miniaturization of the movement assembly 10.

[0042] See also Figure 4 In one embodiment of the utility model, the first gear set 3 includes a third gear 31, a first connecting shaft 33 and a fourth gear 35, the third gear 31 is transmission-connected to the driving shaft 131 of the driving member 1, one end of the first connecting shaft 33 is connected to the third gear 31, and the other end is connected to the fourth gear 35 to drive the fourth gear 35 to rotate, and the fourth gear 35 is meshed with the first gear 41.

[0043] One end of the first connecting shaft 33 is connected to the third gear 31 or the fourth gear 35 through a shaft sleeve 37 to enhance the stability of transmission.

[0044] In this embodiment, the third gear 31 rotates under the drive of the driving shaft 131, and drives the fourth gear 35 to rotate through the first connecting shaft 33, and the fourth gear 35 directly drives the first gear 41 and the second gear 45 of the second gear set 4 to rotate. Therefore, the first gear set 3 of this solution realizes power transmission between the third gear 31 and the fourth gear 35 by direct transmission through the first connecting shaft 33, and the transmission structure is simple and the transmission efficiency is high.

[0045] See also Figure 4 In one embodiment of the utility model, the third gear 31 is a helical gear, the driving shaft 131 is a screw, and the screw extends in a direction perpendicular to the rack assembly 6 and is meshed with the helical gear.

[0046] In this embodiment, meshing transmission is performed by cooperating between the screw and the bevel gear, which is beneficial to increase the meshing area, and then helps to improve the driving stability of the movement assembly 10, thereby helping to improve the user experience.

[0047] See also Figure 4 In one embodiment of the utility model, the rack assembly 6 includes two racks 61, and the two racks 61 are arranged opposite to each other along two sides. The number of the driving shafts 131 of the driving member 1 is provided with two, and the two driving shafts 131 are arranged at intervals along the length direction perpendicular to the rack assembly 6. The number of the first gear group 3, the second gear group 4, and the massage head 7 are respectively provided with two, one driving shaft 131 is meshedly connected to one first gear group 3, one first gear group 3 is meshedly connected to one first gear 41, one output shaft of the first gear 41 is connected to one massage head 7, and one second gear 45 is meshedly connected to one rack 61.

[0048] The rack assembly 6 further includes a mounting plate 61 , the rack 61 is connected to the mounting plate 61 , and is disposed in a receiving groove 91 of the pad body 90 through the mounting plate 61 , and is fixedly connected to the pad body 90 .

[0049] In this embodiment, the two second gears 45 of the movement assembly 10 slide relative to the racks 61 on opposite sides, which is conducive to improving the sliding stability of the movement assembly 10. In addition, the two first gears 41 of the movement assembly 10 drive the two massage heads 7 to rotate, thereby achieving massage on both sides of the human body, thereby improving the user experience.

[0050] See also Figure 1 , Figure 2 and Figure 6In one embodiment of the utility model, the driving member 1 includes a driving motor 13, and the driving motor 13 is slidably connected to the rack assembly 6 along the length direction of the rack assembly 6. The driving motor 13 is perpendicular to the length direction of the rack assembly 6 and is provided with a driving shaft 131 at two opposite ends thereof.

[0051] The driving member 1 further includes a mounting member 11, which includes an upper cover 111 and a lower cover 113. The upper cover 111 and the lower cover 113 are connected by covering to form a mounting cavity, which is used to accommodate the driving motor 13 and provide support for the first gear set 3 and the second gear set 4. The second gear 45 of the second gear set 4 at least partially penetrates the mounting cavity, so as to mesh with the rack assembly 6, and the output shaft of the first gear 41 of the second gear set 4 passes through the mounting cavity to drive the first gear 41 to rotate.

[0052] In this embodiment, two driving shafts 131 are simultaneously provided on one driving motor 13, and the two driving shafts 131 are respectively used to drive the first gear sets 3 on both sides. Compared with respectively providing two driving motors with single driving shafts, this is conducive to further miniaturizing the size of the movement assembly 10.

[0053] In summary, the movement assembly 10 of the embodiment of the utility model has a driving shaft 131 at each of the left and right ends of the driving motor 13, the driving shaft 131 meshes with the third gear 31 of the first gear set 3, the first gear 41 above the first gear set 3 meshes with the first gear 41 of the second gear set 4, and the second gear 45 below the second gear set 4 meshes with the rack 61. Among them, the two gears of the second gear set 4 are connected by the second connecting shaft 43, and the second connecting shaft 43 is ringed with an escape portion 431, and the escape portion 431 can make room for the driving shaft 131 of the driving motor 13. Through this setting, the space can be effectively utilized, so that the size of the movement assembly 10 along the length direction of the rack assembly 6 is reduced, and the size in the thickness direction is also reduced to a certain extent, thereby miniaturizing the volume of the movement assembly 10, reducing the weight of the waist and back massager 100, and then improving the portability of the waist and back massager 100.

[0054] The utility model also provides a back massager 100 , which includes a cushion body 90 and the movement assembly 10 as described above, wherein the storage groove 91 is used to accommodate the movement assembly 10 , and the rack assembly 6 is fixedly connected to the cushion body 90 .

[0055] Among them, the specific structure of the movement assembly 10 refers to the above-mentioned embodiments. Since the waist and back massager 100 adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0056] See also Figure 5 In one embodiment of the utility model, the waist and back massager 100 further includes a buffer 85, the buffer 85 is fixedly connected to the cushion body 90, and is located on the side of the massage head 7 away from the rack assembly 6, the buffer 85 is used to cover part of the storage groove 91, and the buffer 85 and the cushion body 90 enclose a first accommodating space;

[0057] The waist and back massager 100 has at least a first working mode and a second working mode. In the first working mode, the moving component is located in the first accommodating space. In the second working mode, the driving member 1 drives the moving component to move along the extension direction of the rack component 6.

[0058] The buffer member 85 is a flexible member used to provide elastic support to the human body. For example, the buffer member 85 can be selected as a sponge, which can provide sufficient buffering support force and has certain water and moisture absorption properties.

[0059] In this embodiment, when the massage head 7 does not translate along the rack assembly 6 with the second gear 45, the massage head 7 is hidden behind the buffer 85. When the user leans against the cushion body 90 of the waist and back massager 100, the discomfort caused by the protrusion of the massage head 7 is avoided, so that the user can use the waist and back massager 100 as a cushion, which is conducive to meeting the user's further use needs. When the driving member 1 drives the moving assembly to move along the extension direction of the rack assembly 6, the massage head 7 can move up and down in the extension direction of the rack, thereby massaging the entire back of the user. Through the above-mentioned settings, the waist and back massager can have multiple uses and is widely applicable to a variety of scenarios, which can effectively improve the utilization rate of the waist and back massager.

[0060] See also Figure 5 In one embodiment of the present invention, the waist and back massager 100 further includes a first heating element 83 , which is disposed in the storage groove 91 and is stacked with the buffer element 85 .

[0061] In this embodiment, a first heating element 83 is further provided between the massage head 7 and the buffer element 85. Since the buffer element 85 corresponds to the waist area of ​​the human body, when the back of the user abuts against the lumbar massager 100, the buffer element 85 fits the waist area of ​​the user, so that the user's waist can experience the heat brought by the first heating element 83, which is conducive to further improving the user's usage experience.

[0062] Optionally, the first heating element 83 may be a heating sheet, and heat conduction is achieved by energizing the heating sheet.

[0063] See also Figure 5In one embodiment of the utility model, the waist and back massager 100 further includes a second heating element 81 , and the second heating element 81 is connected to a side of the massage head 7 facing the first gear 41 .

[0064] In this embodiment, when the second gear 45 translates along the rack assembly 6, the second heating element 81 can also be used to generate heat for the movement of the human body, so that the user can receive the heating therapy of the second heating element 81 while receiving the walking and kneading experience of the massage head 7, which is beneficial to further promote blood circulation and enhance the user's experience.

[0065] Optionally, the second heating element 81 includes a microphone bulb 813 and a light board 811. The light board 811 is arranged in the installation groove of the upper cover 111 of the driving member 1. A plurality of microphone bulbs 813 are protruded from the side of the light board 811 facing the massage head 7. Physical therapy of the human body is achieved by emitting light from the microphone bulbs 813.

[0066] In summary, in the back massager 100 of the present invention, the massage head 7 slides along the length direction of the two racks 61, thereby achieving a slide rail type dynamic massage. Further, by sliding up and down in a small range and reversing, a fixed point massage in a certain area can be achieved.

[0067] When in use, the large first heating element 81 corresponds to the waist area of ​​the human body, and the large first heating element 81 heats the waist area to warm the user quickly. In the initial state or when the massage head 7 is not working, the massage head 7 is hidden behind the sponge buffer 85, and the user can use the waist and back massager 100 as a waist support with heating function. When in use, due to the effect of the sponge buffer 85, the user can significantly reduce the foreign body sensation of the massage head 7.

[0068] When using the massage function, the massage head 7 can slide up and down along the entire rack 61 to massage the entire back area up and down. It can also slide up and down in a small range to achieve fixed-point massage in a certain area. When the massage head 7 is massaging the area where the sponge area is located, the human body can still feel the heating effect of the first heating element 81. When the massage head 7 leaves the sponge buffer 85 area and massages other areas, the human body can feel the heat of the massage head 7, which can promote blood circulation in the massage area and enhance the massage effect. It is worth noting that the first heating element 81 of the waist massager can work independently. When the user does not need the first heating element 81 to work, it can be turned off.

[0069] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A movement assembly, characterized in that: The movement assembly is applied to a waist and back massager, and the movement assembly includes a rack assembly and a moving assembly, and the moving assembly includes: Driving parts; a first gear set, the first gear set meshing with a driving shaft of the driving member; a second gear set, the second gear set comprising a first gear, a second connecting shaft and a second gear, the first gear being meshed and connected to the first gear set, one end of the second connecting shaft being connected to the first gear, and the other end being connected to the first gear along the same axis direction to drive the second gear to rotate, the second connecting shaft being located outside the rack assembly, and the second gear being meshed with the rack assembly; and a massage head, the massage head being connected to the output shaft of the first gear so as to rotate along with the first gear; Wherein, the driving member can drive the moving assembly to move along the extending direction of the rack assembly.

2. The movement assembly according to claim 1, characterized in that: The second connecting shaft is provided with an axial escape portion, the driving shaft of the driving member passes through the escape portion and is drivingly connected to the first gear set.

3. The movement assembly according to claim 1, characterized in that: The first gear set includes a third gear, a first connecting shaft and a fourth gear. The third gear is transmission-connected to the driving shaft of the driving member. One end of the first connecting shaft is connected to the third gear, and the other end is connected to the fourth gear to drive the fourth gear to rotate. The fourth gear is meshed with the first gear.

4. The movement assembly according to claim 3, characterized in that: The third gear is a helical gear, the driving shaft is a screw rod, and the screw rod extends in a direction perpendicular to the rack assembly and is meshed with the helical gear.

5. The movement assembly according to any one of claims 1 to 4, characterized in that: The rack assembly includes two racks, and the two racks are arranged opposite to each other on both sides. The number of driving shafts of the driving member is two, and the two driving shafts are arranged at intervals along the length direction perpendicular to the rack assembly. The number of the first gear group, the second gear group, and the massage head are respectively two, one driving shaft is meshed and connected to one first gear group, one first gear group is meshed and connected to one first gear, one output shaft of the first gear is connected to one massage head, and one second gear is meshed and connected to one rack.

6. A back massager, characterized in that: The waist and back massager comprises: A cushion body, wherein the cushion body is provided with a storage groove; and According to any one of claims 1 to 5, the storage groove is used to accommodate the movement assembly, and the rack assembly is fixedly connected to the pad body.

7. The back massager according to claim 6, characterized in that: The waist and back massager further comprises a buffer, which is fixedly connected to the cushion body and is located on a side of the massage head away from the rack assembly, the buffer is used to cover a portion of the storage slot, and the buffer and the cushion body enclose a first accommodation space; The waist and back massager has at least a first working mode and a second working mode. In the first working mode, the moving component is located in the first accommodating space. In the second working mode, the driving member drives the moving component to move along the extension direction of the rack component.

8. The back massager according to claim 7, characterized in that: The waist and back massager also includes a first heating element, which is arranged in the storage groove and stacked with the buffer element.

9. The back massager according to claim 7, characterized in that: The waist and back massager also includes a second heating element, which is connected to a side of the massage head facing the first gear.

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