Hardness-adjustable flexible massage wheel and double-wheel massage mechanism thereof

Abstract

The invention relates to the technical field of ergonomic mechanical massage equipment, in particular to a hardness-adjustable flexible massage wheel and a double-wheel type massage mechanism thereof.The hardness-adjustable flexible massage wheel comprises an air bag wheel set and further comprises a connecting piece, a pressure sensor and an air pipe, and one end of the connecting piece penetrates into the air bag wheel set and is rotationally connected with the air bag wheel set; a first air channel is arranged in the connecting piece and communicated with the air bag wheel set and the air pipe, the pressure sensor is located in the connecting piece or the air bag wheel set, one end of the pressure sensor extends outwards and is used for being electrically connected with an air pump, and the pressure sensor is used for detecting the pressure in the first air channel or the air bag wheel set. According to the massage wheel, the hardness of the massage wheel can be adjusted at low cost, and the massage rigidity is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of ergonomic mechanical massage equipment, and more specifically, to a flexible massage wheel with adjustable hardness and a double-wheel massage mechanism thereof. Background Art

[0002] The massage chair uses mechanical rolling force and mechanical force extrusion to perform massage. The core components of the massage chair mainly include movement, guide rails, motors, materials, etc. The quality of a massage chair mainly depends on the quality of the movement. The movements on the market are mainly 2D and 3D movements. The 2D movement is the earliest generation of movement. The massage head of the massage chair equipped with this movement can only move up and down, left and right, which is a 2-dimensional plane movement. Since this movement can only move in a plane, it cannot fit the back curve of the human body well, and the massage will be stiff. The 3D movement is the mainstream configuration of the massage chair. The massage head can move up and down, left and right, and forward and backward. The forward and backward movement is achieved by a telescopic motor. Such a movement moves in three dimensions, so it can fit the back curve of the human body. At present, the massage wheel on the massage movement in the product market is almost made of rubber and silicone. The roller is driven to roll by the control of the massage movement, thereby achieving the effect of pressing or other massages on the human body. Limited by the material properties and structure of the massage wheel, it still has problems such as lack of humanization of the massage method and stiff massage force.

[0003] The prior art discloses a massage wheel with force sensing, which includes a wheel axle, a flexible wheel outer ring, and a force sensing component. The force sensing component includes a flexible tube, liquid metal, a conductive member, and a circuit board. The liquid metal is stored in the flexible tube, one end of the conductive member is sealed and extends into the flexible tube to form electrical conduction with the liquid metal, and the other end is electrically connected to the circuit board; the flexible tube is arranged in the wheel outer ring and extends along the circumference of the wheel outer ring, so that when the wheel outer ring is subjected to an external load, the flexible tube and the liquid metal therein are deformed; when the liquid metal is deformed, the resistance value changes, and the circuit board collects the resistance value of the liquid metal, processes the resistance value, and outputs an electrical signal that matches the resistance value and can feedback the external load size. The prior art improves the problem of stiff massage by deforming the liquid metal, but the cost of liquid metal is extremely high in practical applications, and once the liquid metal leaks, it will also harm the human body.

[0004] The prior art discloses a new type of massage movement, in which the massage wheel is a flexible wheel with a sealed cavity, in which a fluid and a fluid pressure detection device are provided, and the fluid pressure detection device is electrically connected to a control component, and the massage force applied to the human body by the massage wheel is monitored in real time through the built-in fluid pressure detection device, and the massage force is controlled and adjusted through the control component. The prior art directly adjusts the massage force by controlling the relevant mechanical structure through the control component, and the massage force is inevitably stiff and unnatural during the massage process. Summary of the invention

[0005] The purpose of the present invention is to overcome the problem that the massage wheel in the prior art cannot achieve adjustable hardness of the wheel at low cost, resulting in stiff massage, and to provide a flexible massage wheel with adjustable hardness to solve the problem that the hardness of the massage wheel cannot be adjusted during massage and reduce the stiffness.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] Provided is a flexible massage wheel with adjustable hardness, comprising an airbag wheel assembly, a connecting piece, a pressure sensor and an air pipe, wherein one end of the connecting piece penetrates into the interior of the airbag wheel assembly and is rotationally connected to the airbag wheel assembly, and the other end is fixedly connected to the air pipe, a first airway is arranged in the connecting piece, the first airway connects the airbag wheel assembly and the air pipe, the pressure sensor is located in the connecting piece or the airbag wheel assembly and one end extends outward and is used to be electrically connected to an air pump, and the pressure sensor is used to detect the pressure in the first airway or the airbag wheel assembly.

[0008] During the operation of the above scheme, the massage wheel is installed at the massage wheel installation position of the massage chair, and the circuit of the air pressure sensor and the air path of the trachea are connected to the pressurizing device of the massage chair, and a portion of gas is filled in advance to make the air bag wheel group have a higher air pressure first. When the massage wheel contacts the human body part, the air bag wheel group is subjected to increased external pressure, and the internal air pressure increases. After the air pressure sensor detects the increase in air pressure, the feedback signal reduces the air pressure at the connection at the end of the trachea, so that the gas flows back to the outside of the trachea through the first airway of the connector and is further released, so that the air pressure of the air bag wheel group is reduced, and the hardness of the air bag wheel is reduced accordingly. The contact area between the cortical outer skin of the air bag wheel and the human body part is increased, and it further fits the human body part. When the massage wheel is relatively far away from the human body part, the external pressure on the air bag wheel group is reduced, the internal volume increases, and the air pressure is reduced. When the air pressure sensor detects that the air pressure decreases, the feedback signal increases the air pressure at the connection of the trachea end, causing the gas to enter the airbag wheel group through the first airway of the connector, thereby increasing the air pressure of the airbag wheel group. The air pressure squeezes the airbag to expand and further fit the human body; the airbag wheel group can rotate relative to the connector, and when the outer surface of the airbag wheel group contacts the human body part, the massage movement will cause a relative movement between the human body part and the massage wheel and generate friction between them. When the human body part and the airbag wheel group rub against each other, the friction force will drive the airbag wheel group to rotate, reducing the stiffness and discomfort of the massage caused by this friction to the human body; at the same time, the air pressure sensor controls the air pressure inside the airbag wheel group through the feedback signal to realize the adjustable hardness of the massage wheel. The two work together to realize the adjustable hardness of the wheel and reduce the stiffness of the massage.

[0009] Furthermore, the airbag wheel assembly includes an inner hub and an outer airbag, the inner hub is sealingly connected to the outer airbag, a second air channel is radially arranged in the inner hub, an axial hole is arranged at the center of the inner hub, the connecting piece is inserted through the axial hole, and the two ends of the second air channel are respectively connected to the outer airbag and the first air channel; the connecting piece and the inner hub are rotatably connected, and bearings should be installed at both ends of the connecting piece.

[0010] Furthermore, the second air duct includes a cavity located in the inner hub and a plurality of air duct holes connected to the outer surface of the inner hub, and the air duct holes connect the outer airbag and the cavity; the air duct openings on the outer surface of the inner hub are evenly distributed on the outer surface of the inner hub, so as to facilitate the uniform entry of gas into the outer airbag. Since the airbag wheel assembly can rotate relative to the connecting piece, the second air duct is set as a cavity structure inside the inner hub. No matter how much the inner hub rotates, the gas in the first air duct can enter the outer airbag through the second air duct.

[0011] Furthermore, a plurality of first sealing rings are mounted on the connecting member, and the first sealing rings are located at both ends of the connection between the first air duct and the second air duct; the first sealing ring is first installed on the connecting member, and a shallow sealing member installation groove should be opened at the installation position of the connecting member, and a shallow installation groove is also opened at the corresponding position of the corresponding inner wheel hub, so as to facilitate the installation of the connecting member. At the same time, since the airbag wheel assembly is rotatable relative to the connecting member, the first sealing member has a sealing effect under rotational motion.

[0012] Furthermore, an air nozzle is provided on the outer wall of the connecting member away from one end of the airbag wheel assembly, one end of the air nozzle is connected to the first air channel, and the other end is fixedly connected to the air pipe; the provision of the air nozzle can facilitate the installation of the air pipe.

[0013] Furthermore, a second sealing ring is provided between the air nozzle and the air pipe for sealing; the provision of the second sealing ring can prevent gas leakage between the air nozzle and the air pipe during inflation and deflation.

[0014] A double-wheel massage mechanism comprises a shell and a driving device installed in the shell, and also comprises two groups of the above-mentioned flexible massage wheels with adjustable hardness, and an air pump, wherein the driving device is respectively connected to the two groups of connecting pieces connecting the airbag wheel groups and drives the two groups of the airbag wheel groups to move closer to or farther away from each other, the air pump is electrically connected to the pressure sensor, and the air pipes are all connected to the air pump; the airbag wheel groups move closer to or farther away from each other refers to the simultaneous up and down swinging action of the two airbag wheel groups, the driving device drives the airbag wheel groups to swing upward or downward at the same time, when the two airbag wheel groups swing upward at the same time, the outer airbags of the airbag wheel groups contact with the human body parts to achieve a "pinching" massage effect, and when the two airbag wheel groups swing downward at the same time, the outer airbags of the airbag wheel groups contact with the human body parts to achieve a "supporting" massage effect.

[0015] Furthermore, the driving device includes a driving component and a worm connected to the output end of the driving component, a worm wheel is provided at the end of the connecting member away from the airbag wheel group, the worm is installed at the center of the shell, and both ends are rotatably connected to the shell, the two side surfaces of the shell are openings, the worm wheel enters the shell through the openings of the shell and meshes with the worm; the worm wheels are symmetrically arranged on both sides of the worm, the worm wheel is meshingly connected with the worm, the worm is the active component, and the worm wheel is the driven component, the forward or reverse rotation of the worm drives the worm wheel to rotate clockwise or counterclockwise, further rotating the entire connecting member, and at the same time, the forward and reverse rotation of the worm drives the worm wheel to rotate clockwise or counterclockwise alternately, thereby realizing the up and down swing of the entire connecting member.

[0016] Furthermore, the worm wheel is integrally connected to the connecting piece; the specific form of the connecting piece is a cross bar integrally connected to the worm wheel. During manufacturing, the worm wheel can be processed first and then the cross bar can be welded to the worm wheel, or an integrally formed connecting piece can be directly processed on the blank. The first air duct is arranged in the cross bar of the connecting piece. The cross bar and the worm wheel are integrally connected in a manner that the tooth surface of the worm wheel is a tooth-missing structure, so that the worm wheel becomes a gear structure similar to an incomplete gear, wherein the position of the tooth-missing position is fixedly connected to the cross bar, so that the entire cross bar is integrally connected to the worm wheel.

[0017] Furthermore, the driving assembly includes a coupling and a motor. The coupling is installed at the bottom end of the shell and one end is fixedly connected to the bottom end of the worm. The motor is installed at the bottom end outside the shell. The output shaft of the motor passes through the bottom of the shell and is fixedly connected to the other end of the coupling. The forward and reverse rotation of the worm requires a power source. A forward and reverse motor is installed at the bottom of the shell to drive the worm, making the spatial structure more compact.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. One end of the connector penetrates into the airbag wheel assembly and is rotatably connected to the airbag wheel assembly, and the other end is fixedly connected to the trachea. A first airway is provided in the connector, and the first airway connects the airbag wheel assembly and the trachea. The pressure sensor is located in the connector or the airbag wheel assembly. When the human body parts and the airbag wheel assembly rub against each other, the friction force will drive the airbag wheel assembly to rotate, thereby reducing the stiffness and discomfort of the massage caused by such friction to the human body. At the same time, the air pressure sensor controls the air pressure inside the airbag wheel assembly through the feedback signal to realize the adjustable hardness of the massage wheel, and the hardness of the wheel can be adjusted during the massage process, thereby reducing the stiffness of the massage.

[0020] 2. Two sets of flexible massage wheels with adjustable hardness are symmetrically arranged about the worm. The worm wheels are meshed with the worm at both ends of the worm. When the worm rotates forward or reversely, the two worm wheels can drive the cross bars on both sides to move up or down respectively, thereby achieving the massage effects of "pinching" and "supporting", improving the comfort of massage and reducing the stiffness. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional diagram of a flexible massage wheel with adjustable hardness;

[0022] Figure 2 It is a cross-sectional view of a flexible massage wheel with adjustable hardness;

[0023] Figure 3 A three-dimensional diagram of the inner hub of a flexible massage wheel with adjustable hardness;

[0024] Figure 4 It is a cross-sectional view of the inner hub of a flexible massage wheel with adjustable hardness;

[0025] Figure 5 A three-dimensional diagram of a double-wheel massage mechanism;

[0026] Figure 6 It is a cross-sectional view of a double-wheel massage mechanism.

[0027] In the accompanying drawings: 1. airbag wheel assembly; 2. connecting part; 3. pressure sensor; 4. air pipe; 201. first air duct; 101. inner hub; 102. outer airbag; 1011. second air duct; 103. shaft hole; 1012. cavity; 1013. air duct hole; 5. first sealing ring; 203. air nozzle; 6. second sealing ring; 7. housing; 8. driving device; 801. driving assembly; 802. worm; 202. worm wheel; 8011. coupling; 8012. motor. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with specific implementation methods. The accompanying drawings are only used for exemplary descriptions and are only schematic diagrams, not actual drawings, and cannot be understood as limiting this patent; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0029] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] Example 1

[0031] This embodiment is the first embodiment of a flexible massage wheel with adjustable hardness. Figures 1 to 5 As shown, it includes an airbag wheel assembly 1, a connecting member 2, a pressure sensor 3 and an air pipe 4. One end of the connecting member 2 penetrates into the interior of the airbag wheel assembly 1 and is rotatably connected to the airbag wheel assembly 1, and the other end is fixedly connected to the air pipe 4. A first air passage 201 is arranged in the connecting member 2. The first air passage 201 connects the airbag wheel assembly 1 and the air pipe 4. The pressure sensor 3 is located in the connecting member 2 or the airbag wheel assembly 1 and one end extends outward and is used to be electrically connected to the air pump. The pressure sensor 3 is used to detect the pressure in the first air passage 201 or the airbag wheel assembly 1.

[0032] Specifically, the airbag wheel assembly 1 includes an inner hub 101 and an outer airbag 102, the inner hub 101 and the outer airbag 102 are sealed and connected, a second air channel 1011 is radially arranged in the inner hub 101, an axial hole 103 is arranged at the center of the inner hub 101, the connecting member 2 is inserted through the axial hole 103, and the two ends of the second air channel 1011 are respectively connected to the outer airbag 102 and the first air channel 201; the connecting member 2 and the inner hub 101 are rotatably connected, and bearings should be installed at both ends of the connecting member 2.

[0033] Specifically, the second air channel 1011 includes a cavity 1012 located in the inner hub 101 and a plurality of air channel holes 1013 connected to the outer surface of the inner hub 101, and the air channel holes 1013 connect the outer airbag 102 with the cavity 1012; the air channel openings on the outer surface of the inner hub 101 are evenly distributed on the outer surface of the inner hub 101, so as to facilitate the uniform entry of gas into the outer airbag 102. Since the airbag wheel assembly 1 can rotate relative to the connecting member 2, the second air channel 1011 is set as a cavity 1012 structure inside the inner hub 101. No matter how much the inner hub 101 rotates, the gas in the first air channel 201 can enter the outer airbag 102 through the second air channel 1011.

[0034] Specifically, a plurality of first sealing rings 5 ​​are mounted on the connecting member 2, and the first sealing rings 5 ​​are located at both ends of the junction of the first air passage 201 and the second air passage 1011; the first sealing rings 5 ​​are first installed on the connecting member 2, and a shallow sealing member installation groove should be opened at the installation position of the connecting member 2, and a shallow installation groove is also opened at the corresponding position of the corresponding inner hub 101, so as to facilitate the installation of the connecting member 2. At the same time, since the airbag wheel assembly 1 is rotatable relative to the connecting member 2, the first sealing member has a sealing effect under rotational motion.

[0035] Specifically, an air nozzle 203 is provided on the outer wall of the connecting member 2 away from the airbag wheel assembly 1. One end of the air nozzle 203 is connected to the first air channel 201, and the other end is fixedly connected to the air pipe 4. The setting of the air nozzle 203 can facilitate the installation of the air pipe 4.

[0036] Specifically, a second sealing ring 6 is provided between the air nozzle 203 and the air pipe 4 for sealing; the provision of the second sealing ring 6 can prevent gas leakage between the air nozzle 203 and the air pipe 4 during inflation and deflation.

[0037] The working principle of the flexible massage wheel with adjustable hardness in this embodiment is as follows:

[0038] When the massage wheel contacts the human body part, when the external pressure of the airbag wheel set 1 increases, the internal air pressure increases. After the air pressure sensor detects the increase in air pressure, the feedback signal reduces the air pressure at the connection at the end of the trachea 4, causing the gas to flow back to the air nozzle 203 through the first airway 201 of the connector 2 and further released through the trachea 4, so that the air pressure of the airbag wheel set 1 is reduced, and the hardness of the airbag wheel is reduced accordingly. The contact area between the leather skin of the airbag wheel and the human body part increases, and it further fits the human body part. When the massage wheel is relatively far away from the human body part, the external pressure of the airbag wheel set 1 is reduced, and the internal volume increases and the air pressure Decreases, and after the air pressure sensor detects that the air pressure decreases, the feedback signal increases the air pressure at the connection at the end of the trachea 4, causing the gas to enter the airbag wheel assembly 1 through the first airway 201 of the connector 2, thereby increasing the air pressure of the airbag wheel assembly 1, and the air pressure squeezes the airbag to expand, further fitting the human body; wherein the airbag wheel assembly 1 can rotate relative to the connector 2, and when the outer surface of the airbag wheel assembly 1 contacts a part of the human body, the massage movement will cause a relative movement between the part of the human body and the massage wheel and generate friction between them, and when the part of the human body and the airbag wheel assembly 1 rub against each other, the friction force will drive the airbag wheel assembly 1 to rotate.

[0039] The beneficial effects of this embodiment: the air pressure sensor of the airbag wheel group 1 controls the air pressure inside the airbag wheel group 1 through the feedback signal to achieve adjustable hardness of the massage wheel. The airbag wheel group 1 is rotatably connected to the connecting part 2, and the airbag wheel group 1 can passively rotate on the human body part. The two work together to achieve adjustable hardness of the wheel and reduce the stiffness of the massage.

[0040] Example 2

[0041] This embodiment is a first embodiment of a double-wheel massage mechanism. Figures 5 to 6 As shown, it includes a shell 7 and a driving device 8 installed in the shell 7, and also includes two groups of the above-mentioned flexible massage wheels with adjustable hardness, and an air pump. The driving device 8 is respectively connected to the two groups of connecting pieces 2 connecting the airbag wheel groups 1 and drives the two groups of airbag wheel groups 1 to move closer to or farther away from each other. The air pump is electrically connected to the pressure sensor 3, and the air pipe 4 is connected to the air pump; the airbag wheel groups 1 move closer to or farther away from each other refers to the simultaneous up and down swinging action of the two airbag wheel groups 1. The driving device 8 drives the airbag wheel groups 1 to swing upward or downward at the same time. When the two airbag wheel groups 1 swing upward at the same time, the outer airbags 102 of the airbag wheel groups 1 contact with the human body parts to achieve a "pinching" massage effect. When the two airbag wheel groups 1 swing downward at the same time, the outer airbags 102 of the airbag wheel groups 1 contact with the human body parts to achieve a "supporting" massage effect.

[0042] Specifically, the driving device 8 includes a driving component 801 and a worm 802 connected to the output end of the driving component 801. A worm wheel 202 is provided at the end of the connecting member 2 away from the airbag wheel group 1. The worm 802 is installed at the center of the shell 7, and both ends are rotatably connected to the shell 7. The two side surfaces of the shell 7 are openings. The worm wheel 202 enters the shell 7 through the openings of the shell 7 and meshes with the worm 802; the worm wheel 202 is symmetrically arranged on both sides of the worm 802, and the worm wheel 202 is meshed with the worm 802. The worm 802 is an active component, and the worm wheel 202 is a driven component. The forward or reverse rotation of the worm 802 drives the worm wheel 202 to rotate clockwise or counterclockwise, thereby further rotating the entire connecting member 2. At the same time, the forward and reverse rotation of the worm 802 alternately drives the worm wheel 202 to rotate clockwise or counterclockwise, thereby realizing the up and down swing of the entire connecting member 2.

[0043] Specifically, the worm gear 202 is integrally connected to the connecting member 2; the specific form of the connecting member 2 is a cross bar integrally connected to the worm gear 202. During manufacturing, the worm gear 202 can be processed first, and then the cross bar can be welded to the worm gear 202, or an integrally formed connecting member 2 can be directly processed on the blank. The first air duct 201 is arranged in the cross bar of the connecting member 2. The cross bar and the worm gear 202 are integrally connected in a manner that the tooth surface of the worm wheel 202 is a tooth-missing structure, so that the worm wheel 202 becomes a gear structure similar to an incomplete gear, wherein the position of the tooth-missing position is fixedly connected to the cross bar, so that the entire cross bar is integrally connected to the worm wheel 202.

[0044] The working principle of a double-wheel massage mechanism in this embodiment is as follows:

[0045] The two ends of the worm 802 are symmetrically meshed with the worm wheel 202. When the worm 802 rotates forward or reversely, the gear teeth of the two worm wheels 202 close to the worm 802 have the same movement direction, i.e., the same upward or the same downward. At this time, the cross bar fixed to the end of the worm wheel 202 away from the worm 802 also has the same swinging direction, i.e., the same downward or the same upward accordingly. When the cross bars on both sides are at the same upward, the top ends of the airbag wheel groups 1 on both sides are close to each other and contact with the human body parts at the same time to achieve the technical effect of "pinching". When the cross bars on both sides are at the same downward, the top ends of the airbag wheel groups 1 on both sides are away from each other and contact with the human body parts at the same time to achieve the technical effect of "supporting".

[0046] Beneficial effects of this embodiment: the driving component 801 drives the worm gear 202 to rotate forward and reversely to drive the top ends of the airbag wheel group 1 to move closer to or away from each other, thereby achieving the massage effects of "pinching" and "supporting", improving the comfort of massage and reducing the stiffness.

[0047] Example 3

[0048] This embodiment is a second embodiment of a double-wheel massage mechanism. Figures 5 to 6 As shown, the difference from Example 2 is that:

[0049] Specifically, the driving assembly 801 includes a coupling 8011 and a motor 8012. The coupling 8011 is installed at the bottom end of the shell 7 and one end is fixedly connected to the bottom end of the worm 802. The motor 8012 is installed at the bottom end of the shell 7. The output shaft of the motor 8012 passes through the bottom of the shell 7 and is fixedly connected to the other end of the coupling 8011. The forward and reverse rotation of the worm 802 requires a power source. The forward and reverse motor 8012 is installed at the bottom of the shell 7 to drive the worm 802, making the spatial structure more compact.

[0050] The working principle of a double-wheel massage mechanism in this embodiment is as follows:

[0051] The motor 8012 is started, driving the coupling 8011 to rotate, and then driving the worm 802 to rotate. The forward and reverse rotation of the motor 8012 is controlled by the PLC program or other means to drive the airbag wheel group 1 to swing up and down, thereby achieving the massage effect of "pinching" and "supporting".

[0052] Beneficial effects of this embodiment: by selecting the motor 8012 as the driving component 801, the forward and reverse control of the motor 8012 is simpler, and the selection cost of the motor 8012 is also low, which can effectively reduce the manufacturing cost.

[0053] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A flexible massage wheel with adjustable hardness, comprising an airbag wheel assembly (1), characterized in that: It also includes a connecting member (2), a pressure sensor (3) and an air pipe (4); one end of the connecting member (2) penetrates into the interior of the airbag wheel assembly (1) and is rotatably connected to the airbag wheel assembly (1), and the other end is fixedly connected to the air pipe (4); a first air passage (201) is provided in the connecting member (2); the first air passage (201) connects the airbag wheel assembly (1) and the air pipe (4); the pressure sensor (3) is located in the connecting member (2) or the airbag wheel assembly (1) and one end extends outward and is used to be electrically connected to the air pump; the pressure sensor (3) is used to detect the pressure in the first air passage (201) or the airbag wheel assembly (1).

2. The flexible massage wheel with adjustable hardness according to claim 1, characterized in that: The airbag wheel assembly (1) comprises an inner wheel hub (101) and an outer airbag (102), wherein the inner wheel hub (101) and the outer airbag (102) are sealedly connected, a second air passage (1011) is radially arranged inside the inner wheel hub (101), an axial hole (103) is arranged at the center of the inner wheel hub (101), the connecting member (2) is inserted through the axial hole (103), and two ends of the second air passage (1011) are respectively connected to the outer airbag (102) and the first air passage (201).

3. The flexible massage wheel with adjustable hardness according to claim 2, characterized in that: The second air channel (1011) comprises a cavity (1012) located inside the inner hub (101) and a plurality of air channel holes (1013) connected to the outer surface of the inner hub (101), wherein the air channel holes (1013) connect the outer air bag (102) and the cavity (1012).

4. The flexible massage wheel with adjustable hardness according to claim 2, characterized in that: A plurality of first sealing rings (5) are sleeved on the connecting member (2), and the first sealing rings (5) are located at both ends of the connection between the first air channel (201) and the second air channel (1011).

5. The double-wheeled flexible massage wheel with adjustable hardness according to claim 1, characterized in that: An air nozzle (203) is provided on the outer wall of the connecting member (2) at one end away from the airbag wheel assembly (1); one end of the air nozzle (203) is connected to the first air channel (201), and the other end is fixedly connected to the air pipe (4).

6. The flexible massage wheel with adjustable hardness according to claim 5, characterized in that: A second sealing ring (6) is provided between the air nozzle (203) and the air pipe (4) for sealing.

7. A double-wheel massage mechanism, comprising a housing (7) and a driving device (8) installed in the housing (7), characterized in that: It also includes two groups of flexible massage wheels with adjustable hardness as described in any one of claims 1 to 6, and an air pump, the driving device (8) is respectively connected to the two groups of connecting parts (2) connected to the air bag wheel groups (1) and drives the two groups of air bag wheel groups (1) to move closer to or away from each other, the air pump is electrically connected to the pressure sensor (3), and the air pipe (4) is connected to the air pump.

8. A double-wheel massage mechanism according to claim 7, characterized in that: The driving device (8) comprises a driving component (801) and a worm (802) connected to the output end of the driving component (801); the connecting member (2) is provided with a worm wheel (202) at the end away from the airbag wheel assembly (1); the worm wheel (802) is installed at the center of the housing (7) and both ends are rotatably connected to the housing (7); the two side surfaces of the housing (7) are openings; the worm wheel (202) enters the housing (7) through the opening of the housing (7) and meshes with the worm wheel (802).

9. A double-wheel massage mechanism according to claim 7, characterized in that: The turbine is integrally connected to the connecting member (2).

10. A double-wheel massage mechanism according to claim 8, characterized in that: The driving assembly (801) comprises a coupling (8011) and a motor (8012); the coupling (8011) is mounted at the bottom end inside the housing (7) and one end of the coupling is fixedly connected to the bottom end of the worm (802); the motor (8012) is mounted at the bottom end outside the housing (7); the output shaft of the motor (8012) passes through the bottom of the housing (7) and is fixedly connected to the other end of the coupling (8011).

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