CN221904657U - Back massage instrument - Google Patents

Abstract

The utility model discloses a back massage device, comprising: a housing; the massage plate is arranged above the shell, and a guide groove is formed in the massage plate; the upper end of the first eccentric component is movably connected with one end of the massage plate; the upper end of the second eccentric component passes through the guide groove and is connected with the other end of the massage plate in a sliding way; the driving part is arranged on the shell and positioned below the massage plate, and comprises a driving motor and a transmission assembly which are in driving connection, wherein the transmission assembly is respectively in transmission connection with the first eccentric assembly and the second eccentric assembly; the driving motor drives the transmission assembly to move, and the transmission assembly drives the first eccentric assembly and the second eccentric assembly to move so as to massage the human body. When driving motor corotation or reversal, first eccentric subassembly and second eccentric subassembly drive the motion form difference of massage plate, and massage technique has multiple, is favorable to promoting user experience.

Description

Back Massager

Technical Field

The utility model belongs to the technical field of massage devices, and in particular relates to a back massager.

Background Art

As the pace of life accelerates, people spend more and more time working at their desks, which makes it very easy for them to suffer from neck and back fatigue. If the back muscles cannot be relaxed for a long time, it will seriously affect physical health. There are many meridians passing through the back of the human body. Massaging the back can relax the muscles and meridians, promote blood circulation and remove blood stasis, and relieve back pain caused by fatigue or exercise. Therefore, massage equipment came into being.

The existing Chinese patent with announcement number CN216725165U discloses a massager for massaging the back, comprising: a connecting casing, an upper end of which is equipped with a mounting movable block, and a fixed eccentric shaft is fixedly installed on the upper side of the left end of the mounting movable block, an open-back massage block is connected to the outer side of the upper end of the fixed eccentric shaft, and a connecting connecting groove is opened at the right end of the open-back massage block, and a massage head mounting plate is installed on the right side of the upper end of the open-back massage block; a massage head body, which is fixedly installed on the middle side of the upper end of the open-back massage block, and a massage mechanism is installed on the left end of the open-back massage block; a connecting track, which is opened on the right surface of the open-back massage block, and a mounting limit shaft is fixedly installed in the middle of the connecting track, and a connecting fixing plate is fixedly installed at the lower end of the mounting limit shaft.

The above-mentioned massager can perform back massage, but the massage action is relatively simple and boring, resulting in poor user experience. In view of this, how to design a back massager with multiple massage modes is a technical problem to be solved by the utility model.

Utility Model Content

The utility model provides a back massager which realizes a back massager with multiple massage modes.

In order to achieve the above technical objectives, the utility model adopts the following technical solutions:

In one aspect, the utility model provides a back massager, comprising:

case;

A massage plate, which is arranged above the shell, and a guide groove is provided on the massage plate;

A first eccentric component, the upper end of which is movably connected to one end of the massage plate;

A second eccentric assembly, the upper end of which passes through the guide groove and is slidably connected to the other end of the massage plate; and

A driving unit, which is arranged on the housing and located below the massage plate, the driving unit comprises a driving motor and a transmission assembly which are drivingly connected to each other, and the transmission assembly is drivingly connected to the first eccentric assembly and the second eccentric assembly respectively;

The driving motor drives the transmission assembly to move, and the transmission assembly drives the first eccentric assembly and the second eccentric assembly to move to massage the human body.

In some embodiments of the present application, the first eccentric component includes:

a first eccentric wheel, wherein the bottom end of the first eccentric wheel is drivingly connected to the driving unit; and,

A first eccentric shaft is vertically arranged at the upper end of the first eccentric wheel and is rotatably connected to the massage plate.

In some embodiments of the present application, the second eccentric component includes:

A second eccentric wheel, the bottom of which is provided with a receiving cavity;

a second eccentric shaft, which is disposed at the upper end of the second eccentric wheel, the upper end of the second eccentric shaft passes through the guide groove and is slidably connected to the massage plate; and,

A rotating member is disposed in the accommodating cavity and is drivingly connected to the driving portion. The rotating member is configured to drive the second eccentric wheel to rotate and can rotate at a certain angle relative to the second eccentric wheel.

In some embodiments of the present application, the accommodating cavity is cylindrical, and two groups of fan-shaped bosses are provided on the inner circumferential surface of the accommodating cavity, and the two groups of bosses are symmetrical about the axis of the second eccentric wheel.

In some embodiments of the present application, the rotating member is cylindrical, and two groups of fan-shaped driving ears are provided on the outer circumference of the rotating member. The two groups of driving ears are symmetrical about the axis of the rotating member, and the driving ears are located between the two groups of bosses.

In some embodiments of the present application, the central angles corresponding to the boss and the driving ear are both 45°.

In some embodiments of the present application, the massage panel comprises:

The first massage plate has a plurality of first massage protrusions arranged thereon at intervals, and the plurality of first massage protrusions correspond to the back of the human body, and the guide groove is arranged on the first massage plate.

In some embodiments of the present application, the massage panel further includes:

The second massage plate is arranged above the first massage plate and is movably connected to the first massage plate. The second massage plate corresponds to the waist of the human body and is provided with a plurality of second massage protrusions.

In some embodiments of the present application, the drive motor is disposed on the housing and is located between two groups of the first eccentric assemblies and two groups of the second eccentric assemblies, and output shafts are respectively provided at both ends of the drive motor; the transmission assembly includes:

A worm is coaxially and fixedly connected with the output shaft.

In some embodiments of the present application, the transmission assembly further includes:

A transmission gear, a transmission shaft is provided at the center thereof, the transmission shaft is rotatably connected to the housing in a vertical direction, and the transmission shaft is drivingly connected to the first eccentric assembly and the second eccentric assembly respectively; and,

A worm gear assembly, which is meshed with the worm and the transmission gear respectively;

When the motor is working, the output shaft drives the worm to rotate, and the worm drives the transmission gear to rotate through the worm gear assembly, thereby driving the transmission shaft to rotate.

Compared with the prior art, the advantages and positive effects of the utility model are as follows: by setting a shell, a massage plate, a first eccentric component, a second eccentric component and a driving part, the massage plate is arranged above the shell; the upper end of the first eccentric component is movably connected to one end of the massage plate; the upper end of the second eccentric component passes through the guide groove and is slidably connected to the other end of the massage plate; the driving part assembly includes a driving motor and a transmission assembly, the driving motor is drivingly connected to the transmission assembly, the transmission assembly is respectively transmission-connected to the first eccentric assembly and the second eccentric assembly, the driving motor drives the transmission assembly to rotate, and the transmission assembly drives the first eccentric assembly and the second eccentric assembly to move, when the driving motor rotates forward or reversely, the first eccentric assembly and the second eccentric assembly drive the massage plate to move in different forms, there are a variety of massage techniques, while ensuring the cost, the massage action is enriched, which is beneficial to improving the user experience.

BRIEF DESCRIPTION OF THE DRAWINGS

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 some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

FIG1 is a schematic structural diagram of an embodiment of a back massager provided by the utility model;

FIG2 is a schematic structural diagram of another embodiment of the back massager provided by the utility model;

FIG3 is an exploded view of another embodiment of the back massager provided by the present invention;

FIG4 is a schematic diagram of the structure of a portion of a back massager provided by the present invention;

FIG5 is a schematic structural diagram of an embodiment of a rotating member provided by the utility model;

FIG6 is a schematic structural diagram of an embodiment of a second eccentric assembly provided by the utility model;

FIG7 is a schematic structural diagram of an embodiment of the second eccentric assembly provided by the present invention connected to the rotating member;

FIG8 is a schematic structural diagram of another embodiment of the second eccentric assembly connected to the rotating member provided by the present invention;

FIG9 is a schematic structural diagram of the back massager provided by the present invention during open back massage;

FIG. 10 is a schematic structural diagram of the back massager provided by the present invention during kneading massage.

Description of reference numerals:

1. Shell;

2. First main massage plate; 21. First massage plate; 211. Guide groove; 212. First massage protrusion; 22. Second massage plate; 221. Second massage protrusion;

3. Second main massage panel;

4. first eccentric assembly; 41. first eccentric wheel; 42. first eccentric shaft;

5. second eccentric assembly; 51. second eccentric wheel; 511. accommodating chamber; 512. boss; 52. second eccentric shaft; 53. rotating member; 531. driving ear;

6. Driving unit; 61. Driving motor; 62. Transmission assembly; 621. Transmission gear; 6211. Transmission shaft; 622. Worm.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment 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.

It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and/or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and/or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and/or the use of other materials.

In one aspect, in combination with FIGS. 1 to 10 , an embodiment of the present disclosure provides a back massager, which includes a shell 1 , two groups of massage panels, two groups of first eccentric assemblies 4 , two groups of second eccentric assemblies 5 and a driving unit 6 .

As shown in FIG. 2 , two groups of massage panels are symmetrically arranged above the housing 1 in the direction of the longitudinal axis of the housing 1 , and a guide groove 211 is provided at a position corresponding to the waist of the human body on each group of massage panels;

The two groups of the first eccentric components 4 are symmetrically arranged with respect to the longitudinal axis direction of the housing 1, the first eccentric components 4 correspond to the back of the human body, and the upper end of the first eccentric component 4 is movably connected to one end of the massage plate;

The two groups of the second eccentric components 5 are symmetrically arranged about the longitudinal axis direction of the housing 1, the second eccentric components 5 correspond to the waist of the human body, the upper end of the second eccentric component 5 passes through the guide groove 211 and is slidably connected with the other end of the massage plate, and the second eccentric component 5 can be delayed relative to the first eccentric component 4. The set angle is a certain range or a certain interval, and of course it can also be a certain angle value;

Exemplarily, the second eccentric assembly 5 can be rotated with a delay of 90° relative to the first eccentric assembly 4 .

As shown in FIG. 3 and FIG. 4 , the driving unit 6 is disposed on the housing 1 and is located below the massage plate. The driving unit 6 includes a driving motor 61 and a transmission assembly 62. The driving motor 61 is drivingly connected to the transmission assembly 62. The transmission assembly 62 is drivingly connected to the first eccentric assembly 4 and the second eccentric assembly 5 respectively.

The driving motor 61 drives the transmission assembly 62 to rotate, and the transmission assembly 62 drives the first eccentric assembly 4 and the second eccentric assembly 5 to rotate so as to drive the massage plate to perform back-opening massage or kneading massage on the back and waist of the human body.

Specifically, by setting a shell 1, two groups of massage plates, two groups of first eccentric components 4, two groups of second eccentric components 5 and a driving unit 6, the two groups of massage plates correspond to the waist and back of the human body; the two groups of first eccentric components 4 and the two groups of second eccentric components 5 are symmetrical about the longitudinal axis of the shell 1, the first eccentric component 4 corresponds to the back of the human body, and the upper end of the first eccentric component 4 is movably connected to the massage plate; the upper end of the second eccentric component 5 passes through the guide groove 211 and is slidably connected to the massage plate, and the second eccentric component 5 can be delayed and rotated 90° relative to the first eccentric component 4; the driving unit 6 assembly includes a driving motor 61 and a transmission assembly 62, the driving motor 61 is connected to the transmission component 62, and the transmission component 62 is connected to the first eccentric component 4 and the second eccentric component 5 respectively. The driving motor 61 drives the transmission component 62 to rotate, and the transmission component 62 drives the first eccentric component 4 and the second eccentric component 5 to rotate. The second eccentric component 5 can be delayed by 90° relative to the first eccentric component 4. When the driving motor 61 rotates forward or reverse, the first eccentric component 4 and the second eccentric component 5 drive the massage plate to perform back-opening massage or kneading massage on the back and waist of the human body, which enriches the massage actions while ensuring the cost, and is conducive to improving the user experience.

Specifically, when the driving motor 61 rotates forward, the first eccentric assembly 4 and the second eccentric assembly 5 rotate at the same speed, and the two groups of massage panels always maintain a nearly parallel back-opening massage movement; when the driving motor 61 rotates reversely, due to the delayed rotation of the second eccentric assembly 5 by 90° relative to the first eccentric assembly 4, the two groups of massage panels are no longer parallel when moving, forming a kneading massage method.

As shown in FIG. 4 , in some embodiments of the present application, the first eccentric assembly 4 includes a first eccentric wheel 41 and a first eccentric shaft 42 .

The bottom end of the first eccentric wheel 41 is drivingly connected to the driving unit 6;

The first eccentric shaft 42 is vertically arranged at the upper end of the first eccentric wheel 41 , the lower end of the first eccentric shaft 42 is connected to the upper surface of the first eccentric wheel 41 , and the upper end of the first eccentric shaft 42 is rotatably connected to the massage plate.

Specifically, the massage plate includes a first main massage plate 2 and a second main massage plate 3, wherein the first main massage plate 2 and the second main massage plate 3 are symmetrically arranged, the first main massage plate 2 is located on the right side, and the second main massage plate 3 is located on the left side. When the user leans on the back massager, the first main massage plate 2 and the second main massage plate 3 can automatically fit the curve of the human body. Since the first main massage plate 2 and the second main massage plate 3 are symmetrically arranged about the longitudinal axis of the housing 1, the movement forms of the first main massage plate 2 and the second main massage plate 3 are also symmetrically arranged about the longitudinal axis of the housing 1. The first main massage plate 2 is taken as an example for explanation below.

The end of the first main massage plate 2 corresponding to the back of the human body is the front end, and the end of the first main massage plate 2 corresponding to the waist of the human body is the rear end. A through hole is provided at the front end of the first main massage plate 2 corresponding to the first eccentric shaft 42. The top end of the first eccentric shaft 42 passes through the through hole and is rotatably connected to the first main massage plate 2. In order to prevent the first main massage plate 2 from being separated from the first eccentric shaft 42, a first fixing member is provided at the top end of the first eccentric shaft 42. The size of the first fixing member is larger than the size of the through hole. When the first eccentric wheel 41 rotates, driven by the first eccentric shaft 42, the first main massage plate 2 swings relative to the rotation axis of the first eccentric wheel 41.

As shown in FIG. 4 , FIG. 5 and FIG. 6 , in some embodiments of the present application, the second eccentric assembly 5 includes a second eccentric wheel 51 , a second eccentric shaft 52 and a rotating member 53 .

The bottom of the second eccentric wheel 51 is provided with a receiving cavity 511;

The second eccentric shaft 52 is disposed at the upper end of the second eccentric wheel 51 along the vertical direction, and the upper end of the second eccentric shaft 52 passes through the guide groove 211 and is slidably connected to the massage plate;

The rotating member 53 is disposed in the accommodating cavity 511 . The rotating member 53 is drivingly connected to the driving portion 6 . The rotating member 53 is configured to drive the second eccentric wheel 51 to rotate, and can rotate 90° relative to the second eccentric wheel 51 .

It should be noted that in order to ensure that the two first massage plates 21 on the first main massage plate 2 and the second main massage plate 3 move symmetrically in the back-opening mode; and at the same time ensure effective switching between the back-opening mode and the kneading mode, the rotating parts 53 in the accommodating cavities 511 of the two second eccentric wheels 51 are symmetrically arranged.

Specifically, the second eccentric assembly 5 includes a second eccentric wheel 51, a second eccentric shaft 52 and a rotating member 53, wherein the bottom end of the second eccentric shaft 52 is fixedly connected to the upper surface of the second eccentric wheel 51, and the top end of the second eccentric shaft 52 passes through the guide groove 211 and is slidably connected to the first main massage plate 2. In order to prevent the first main massage plate 2 from being separated from the second eccentric shaft 52, a second fixing member is provided at the top end of the second eccentric shaft 52, and the size of the second fixing member is larger than the width of the guide groove 211. When the second eccentric wheel 51 rotates, the second eccentric shaft 52 can slide back and forth in the guide groove 211.

A accommodating cavity 511 is provided at the bottom of the second eccentric wheel 51, and a rotating member 53 is arranged in the accommodating cavity 511. The rotating member 53 is connected to the driving part 6. At the same time, the rotating member 53 drives the second eccentric wheel 51 to rotate, and can rotate 90° relative to the second eccentric wheel 51. In this way, when the driving motor 61 changes from forward to reverse rotation, or from reverse to forward rotation, due to the rotating member 53, the second eccentric wheel 51 always rotates 90° later than the first eccentric wheel 41. When the first main massage plate 2 and the second main massage plate 3 move in parallel, a back-opening massage mode is formed. When the movements of the first main massage plate 2 and the second main massage plate 3 are no longer parallel, a kneading massage mode is formed.

In some embodiments of the present application, the accommodating cavity 511 is cylindrical, and two groups of sector-shaped bosses 512 are provided on the inner circumference of the accommodating cavity 511 . The two groups of bosses 512 are symmetrical about the axis of the second eccentric wheel 51 .

Specifically, by setting the accommodating cavity 511 to a cylindrical shape, two groups of fan-shaped bosses 512 are provided on the inner circumferential surface of the accommodating cavity 511, and the two groups of bosses 512 are symmetrical about the axis of the second eccentric wheel 51, so that the two side surfaces of each group of fan-shaped bosses 512 can form a blocking effect on the rotation of the rotating member 53.

In some embodiments of the present application, the rotating member 53 is cylindrical, and two groups of fan-shaped driving ears 531 are provided on the outer circumference of the rotating member 53. The two groups of driving ears 531 are symmetrical about the axis of the rotating member 53, and the driving ears 531 are located between the two groups of bosses 512.

Specifically, two groups of fan-shaped driving ears 531 are provided on the outer circumference of the rotating member 53 , the two groups of driving ears 531 are symmetrical about the axis of the rotating member 53 , and the driving ears 531 are located between the two groups of bosses 512 , so that the driving ears 531 can rotate between the two groups of bosses 512 .

In some embodiments of the present application, the central angles corresponding to the boss 512 and the driving ear 531 are both 45°.

Specifically, by setting the central angles of the boss 512 and the driving ear 531 to 45°, the rotating member 53 can rotate 90° relative to the second eccentric wheel 51 .

As shown in combination with FIG. 2 , in some embodiments of the present application, the first main massage plate 2 and the second main massage plate 3 include a first massage plate 21 .

A plurality of first massage protrusions 212 are disposed at intervals on the first massage plate 21 , and the plurality of first massage protrusions 212 correspond to the back of a human body. The guide grooves 211 are disposed on the first massage plate 21 .

Specifically, by arranging the first massage protrusions 212 at intervals on the first massage plate 21, the first massage protrusions 212 correspond to the back of the human body, and when the first massage plate 21 moves, the first massage protrusions 212 can massage the back of the human body.

In some embodiments of the present application, the first main massage panel 2 and the second main massage panel 3 both further include a second massage panel 22 .

The second massage plate 22 is disposed above the first massage plate 21 and is movably connected to the first massage plate 21 . The second massage plate 22 corresponds to the waist of the human body. A plurality of second massage protrusions 221 are disposed on the second massage plate 22 .

Specifically, by setting a second massage plate 22, the second massage plate 22 is set above the first massage plate 21, the second massage plate 22 corresponds to the human waist, and a plurality of second massage protrusions 221 are provided on the second massage plate 22. When the second massage plate 22 moves with the first massage plate 21, the second massage protrusions 221 can massage the back of the human body.

Specifically, the second massage plate 22 is rotatably connected to the first massage plate 21 .

In some embodiments of the present application, the driving motor 61 is arranged on the longitudinal axis of the housing 1 and is located between the two groups of the first eccentric assemblies 4 and the two groups of the second eccentric assemblies 5. The two ends of the driving motor 61 are respectively provided with output shafts along the longitudinal direction; the transmission assembly 62 includes:

The worm 622 is coaxially and fixedly connected to the output shaft.

Specifically, output shafts are respectively provided at both ends of the driving motor 61 along the longitudinal direction, and the worm 622 is coaxially fixedly connected to the output shaft, so that when the driving motor 61 rotates, the worm 622 at both ends can be driven to rotate.

In some embodiments of the present application, the transmission assembly 62 further includes a transmission gear 621 and a worm 622 assembly.

A transmission shaft 6211 is disposed at the center of the transmission gear 621. The transmission shaft 6211 is rotatably connected to the housing 1 in a vertical direction. The transmission shaft 6211 is drivingly connected to the first eccentric assembly 4 and the second eccentric assembly 5 respectively.

The worm gear assembly is meshed with the worm 622 and the transmission gear 621 respectively;

When the motor is working, the output shaft drives the worm 622 to rotate, and the worm 622 drives the transmission gear 621 to rotate through the worm gear assembly, thereby driving the transmission shaft 6211 to rotate.

Specifically, by setting a transmission gear 621 and a worm 622 assembly, a transmission shaft 6211 is provided at the center of the transmission gear 621. The transmission shaft 6211 is rotatably connected to the shell 1 in the vertical direction. The transmission shaft 6211 is respectively driven and connected to the first eccentric assembly 4 and the second eccentric assembly 5. The worm gear assembly is respectively meshed with the worm 622 and the transmission gear 621. When the motor is working, the motor output shaft drives the worm 622 to rotate, and the worm 622 drives the transmission gear 621 to rotate through the worm gear assembly, thereby driving the transmission shaft 6211 to rotate. The transmission shaft 6211 directly drives the first eccentric wheel 41 to rotate, and the transmission shaft 6211 drives the second eccentric wheel 51 to rotate through the rotating member 53.

As shown in FIG. 3 , in certain embodiments of the present application, a first planar step is provided on the axial surface of the transmission shaft 6211 of the transmission gear 621 , and a second planar step matching the first planar step is provided on the first eccentric wheel and the rotating member.

The back-opening mode and the kneading mode are described in detail below with reference to FIG. 9 and FIG. 10 .

As shown in Figure 9, in the initial position, the first eccentric shaft 42 and the second eccentric shaft 52 are respectively located on both sides of the first eccentric wheel 41 and the second eccentric wheel 51. At this time, the distance between the first eccentric shaft 42 and the second eccentric shaft 52 is the farthest. When the driving motor 61 rotates forward, the worm 622 and the worm wheel assembly will drive the four transmission gears 621 to rotate synchronously, and the fan-shaped driving ear 531 of the rotating member 53 is in contact with the fan-shaped boss 512 of the second eccentric wheel 51. The first eccentric wheel 41 on the right and the second eccentric wheel 51 on the right drive the first main massage plate 2; the first eccentric wheel 41 on the left and the second eccentric wheel 51 on the left drive the second main massage plate 3 to move; the first main massage plate 2 and the second main massage plate 3 always maintain a nearly parallel back-opening massage movement.

As shown in FIG10 , when the driving motor 61 changes from forward to reverse rotation, the worm 622 and the worm gear assembly drive the four transmission gears 621 to rotate synchronously in the opposite direction; at this time, the first eccentric wheel 41 rotates; because the rotating member 53 is driven by the transmission gear 621 shaft, as shown in FIG7 , the fan-shaped driving ear 531 of the rotating member 53 and the contacting side of the fan-shaped boss 512 of the second eccentric wheel 51 are first separated, and when the rotating member 53 rotates 90° along with the transmission gear 621 shaft, as shown in FIG8 , the fan-shaped driving ear 531 of the rotating member 53 contacts the other side of the fan-shaped boss 512 of the second eccentric wheel 51, and at this time, the second eccentric wheel 51 starts to rotate in the opposite direction. In this way, the movements of the first main massage plate 2 and the second main massage plate 3 are no longer parallel, forming a kneading massage method.

When the driving motor 61 changes from the reverse rotation position shown in FIG. 10 to the forward rotation position shown in FIG. 9 , the first eccentric wheel 41 and the second eccentric wheel 51 can reach the forward rotation position shown in FIG. 9 after rotating 360°.

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims (10)

1. A back massage device, comprising:

A housing;

The massage plate is arranged above the shell, and a guide groove is formed in the massage plate;

the upper end of the first eccentric component is movably connected with one end of the massage plate;

The upper end of the second eccentric component passes through the guide groove and is connected with the other end of the massage plate in a sliding way; and, a step of, in the first embodiment,

The driving part is arranged on the shell and positioned below the massage plate, and comprises a driving motor and a transmission assembly which are in driving connection, and the transmission assembly is respectively in transmission connection with the first eccentric assembly and the second eccentric assembly;

The driving motor drives the transmission assembly to move, and the transmission assembly drives the first eccentric assembly and the second eccentric assembly to move so as to massage the human body.

2. The back massager of claim 1, wherein the first eccentric assembly comprises:

The bottom end of the first eccentric wheel is in driving connection with the driving part; and, a step of, in the first embodiment,

The first eccentric shaft is arranged at the upper end of the first eccentric wheel along the vertical direction and is rotationally connected with the massage plate.

3. The back massager of claim 1, wherein the second eccentric assembly comprises:

the bottom of the second eccentric wheel is provided with a containing cavity;

The second eccentric shaft is arranged at the upper end of the second eccentric wheel, and the upper end of the second eccentric shaft penetrates through the guide groove and is in sliding connection with the massage plate; and, a step of, in the first embodiment,

The rotating piece is arranged in the accommodating cavity, is in driving connection with the driving part, is configured to drive the second eccentric wheel to rotate, and can rotate for a plurality of angles relative to the second eccentric wheel.

4. A back massage apparatus according to claim 3, wherein the accommodating chamber is cylindrical, and two sets of fan-shaped bosses are provided on an inner peripheral surface of the accommodating chamber, and the two sets of bosses are symmetrical about an axis of the second eccentric wheel.

5. The back massage apparatus according to claim 4, wherein the rotating member has a cylindrical shape, two sets of fan-shaped driving lugs are provided on an outer peripheral surface of the rotating member, the two sets of driving lugs are symmetrical about an axis of the rotating member, and the driving lugs are located between the two sets of bosses.

6. The back massage apparatus of claim 5, wherein the central angles of the boss and the driving lugs are 45 °.

7. The back massager of claim 1, wherein the massage plate comprises:

the massage device comprises a first massage plate, a plurality of first massage protrusions are arranged on the first massage plate at intervals, the first massage protrusions correspond to the back of a human body, and the guide grooves are formed in the first massage plate.

8. The back massager of claim 7, wherein the massage plate further comprises:

The second massage plate is arranged above the first massage plate and is movably connected with the first massage plate, the second massage plate corresponds to the waist of the human body, and a plurality of second massage bulges are arranged on the second massage plate.

9. The back massager according to any one of claims 1 to 8, wherein the driving motor is disposed on the housing and between the two sets of the first eccentric assemblies and the two sets of the second eccentric assemblies, and output shafts are respectively disposed at both ends of the driving motor; the transmission assembly includes:

and the worm is fixedly connected with the output shaft coaxially.

10. The back massager of claim 9, wherein the transmission assembly further comprises:

The center of the transmission gear is provided with a transmission shaft, the transmission shaft is rotationally connected with the shell along the vertical direction, and the transmission shaft is respectively in driving connection with the first eccentric assembly and the second eccentric assembly; and, a step of, in the first embodiment,

The worm wheel assembly is respectively meshed with the worm and the transmission gear;

When the motor works, the output shaft drives the worm to rotate, and the worm drives the transmission gear to rotate through the worm gear assembly, so that the transmission shaft is driven to rotate.