A massage head assembly with adjustable hardness

Abstract

The present invention relates to a massage head assembly with adjustable hardness. If the hardness of the massage head needs to be softer, the electromagnet is not energized. In this way, the compression spring pushes the moving block to the bottom of the airbag cavity. When the massage head massages the human body, the top of the airbag cavity is easily compressed, collapsed and deformed, and becomes softer. When the massage head needs to be harder, the electromagnet is energized, and the permanent magnet in the moving block is subjected to repulsive force and drives the moving block to move toward the top of the airbag cavity and press against the top of the airbag cavity. In this way, when the massage head massages the human body, the top of the airbag cavity is supported by the moving block and is not easily deformed but becomes harder. Therefore, the massage head assembly with adjustable hardness of the present invention can conveniently adjust the hardness of the massage head, and the adjustment method using the electromagnetic principle is more convenient and reliable to implement, and the cost is lower.

Description

Technical Field

[0001] The invention relates to a massage head assembly with adjustable hardness, in particular to a massage head assembly with adjustable hardness used on a massage chair. Background Art

[0002] The massage mechanism is the core component of the massage chair, which is used to massage the human body. The massage head is the only part of the massage mechanism that contacts the human body. The massage mechanism massages the human body through the movement of the massage head. In the prior art, the massage head is generally made of rubber, and its hardness cannot be changed during use. In fact, when massaging different parts of the human body, using massage heads of different hardness can achieve better massage effects. For example, when massaging the back, a large and soft massage head can be used, while when doing acupressure on the waist, a small and hard massage head is required.

[0003] The Chinese invention patent application with application number 201721060202.0 discloses a massage head structure with adjustable hardness, the core component of which is an annular airbag mounted on a support member, and the annular airbag is limited by a limiter so that it can be stretched and retracted radially when inflated and deflated to adjust its hardness; the hardness is proportional to the air pressure in the airbag. The greater the air pressure, the greater the hardness of the massage head, and vice versa. The inflation and deflation of the annular airbag can change the hardness of the airbag, but because the airbag (massage head) is rotatable during use, it does not propose any solution to the key problem of "how to achieve inflation and deflation while the airbag is rotating". Moreover, to adjust the hardness of the massage head by inflation and deflation, an air source is required and high requirements are placed on sealing, which is relatively complicated and will lead to higher costs. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a massage head assembly with adjustable hardness, which can conveniently adjust the hardness of the massage head, has a simple structure, and is easy to use.

[0005] To achieve the above-mentioned purpose, the present invention provides a massage head assembly with adjustable hardness, which adopts the following technical scheme: a massage head assembly with adjustable hardness, comprising a connecting shaft fixed to a massage arm, on which a massage head is installed; the massage head comprises a base and an outer skin, the base is connected to the connecting shaft, the outer skin is arranged around the edge of the base to form an airbag cavity around the connecting shaft; the side of the airbag cavity close to the base is its bottom, and the side away from the base is its top, a moving block and a compression spring are arranged in the airbag cavity, the compression spring presses the moving block toward the bottom of the airbag cavity, a permanent magnet is arranged in the moving block, and an electromagnet is also connected to the massage arm, when the electromagnet is energized, the moving block is pressed tightly against the top of the airbag cavity by the repulsive force of the electromagnet.

[0006] Preferably, a connecting cylinder is provided at the center of the base, the connecting shaft is passed through the inner hole of the connecting cylinder, and the moving block and the compression spring are both sleeved on the outside of the connecting cylinder.

[0007] More preferably, a first retaining ring and a second retaining ring are provided at one end of the connecting tube close to the top of the airbag cavity, and an edge of the outer skin close to the top of the airbag cavity is provided between the first retaining ring and the second retaining ring; a screw is also screwed on the top of the connecting shaft, and a gasket is provided between the screw and the connecting tube.

[0008] Preferably, a countersunk hole is provided at one end of the moving block facing the top of the airbag cavity, and the compression spring abuts against the bottom of the countersunk hole.

[0009] Preferably, the surface of the moving block facing the top of the airbag cavity is matched with the inner surface of the top of the airbag cavity, and the side surface of the moving block is matched with the inner wall of the airbag cavity.

[0010] Preferably, a mounting groove is provided on one side of the moving block facing the bottom of the airbag cavity, and the permanent magnet is arranged in the mounting groove.

[0011] Preferably, the base is rotatably mounted on the connecting shaft.

[0012] Preferably, the electromagnet is fixedly connected to the connecting shaft and is arranged opposite to the moving block.

[0013] Preferably, the outer skin of the massage head is made of a soft and flexible material.

[0014] More preferably, the outer skin is made of rubber material.

[0015] As described above, the massage head assembly with adjustable hardness of the present invention has the following beneficial effects: in the massage head assembly with adjustable hardness of the present invention, if the hardness of the massage head needs to be made softer, the electromagnet is not energized, so that the compression spring pushes the moving block to the bottom of the airbag cavity, and when the massage head massages the human body, the top of the airbag cavity is easily compressed, collapsed and deformed and becomes softer; when the massage head needs to be made harder, the electromagnet is energized, and the permanent magnet in the moving block is subjected to repulsive force and drives the moving block to move toward the top of the airbag cavity and press against the top of the airbag cavity, so that when the massage head massages the human body, the top of the airbag cavity is supported by the moving block and is not easily deformed and becomes harder. Therefore, the massage head assembly with adjustable hardness of the present invention can conveniently adjust the hardness of the massage head, and the adjustment method using the electromagnetic principle is more convenient and reliable to implement, and the cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It shows a schematic diagram of the structure in which the massage head assembly is installed on the massage movement.

[0017] Figure 2 It is a schematic diagram of the structure of the massage head assembly, in which the moving block is pressed against the top of the airbag cavity.

[0018] Figure 3 It is a schematic diagram of the structure of the massage head assembly, in which the moving block is against the bottom of the airbag cavity.

[0019] Component number description

[0020] 1 Massage arm

[0021] 2 massage heads

[0022] 3 Connecting shaft

[0023] 4 Base

[0024] 5. Skin

[0025] 6 Airbag cavity

[0026] 7 Moving Blocks

[0027] 8 Compression spring

[0028] 9 permanent magnets

[0029] 10. Electromagnet

[0030] 11 Connecting tube

[0031] 12 First retaining ring

[0032] 13 Second retaining ring

[0033] 14 Screws

[0034] 15 Gasket

[0035] 16 Countersunk hole

[0036] 17 Mounting slot DETAILED DESCRIPTION

[0037] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0038] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0039] like Figure 1 As shown, the massage head 2 is generally installed on the massage core through the massage arm 1, and the massage head 2 massages the human body as the core moves. When the massage core massages different parts of the human body, using massage heads 2 with different hardness can achieve better massage effects. Therefore, the massage head 2 component is required to have the function of automatically changing hardness. The present invention provides a massage head 2 component with adjustable hardness, which can automatically change hardness.

[0040] Please refer to Figure 2 and Figure 3 A massage head assembly with adjustable hardness of the present invention comprises a connecting shaft 3 fixed on a massage arm 1, on which a massage head 2 is mounted; the massage head 2 comprises a base 4 and an outer skin 5, the base 4 is connected to the connecting shaft 3, the outer skin 5 is arranged around the edge of the base 4 to form an airbag cavity 6 arranged around the connecting shaft 3; the side of the airbag cavity 6 close to the base 4 is its bottom, and the side away from the base 4 is its top, a moving block 7 and a compression spring 8 are arranged in the airbag cavity 6, the compression spring 8 presses the moving block 7 toward the bottom of the airbag cavity 6, a permanent magnet 9 is arranged in the moving block 7, and an electromagnet 10 is also connected to the massage arm 1, when the electromagnet 10 is energized, the moving block 7 is repelled by the electromagnet 10 and is pressed tightly against the top of the airbag cavity 6.

[0041] In a massage head assembly with adjustable hardness of the present invention, if it is necessary to make the hardness of the massage head 2 softer, the electromagnet 10 is not energized, so that the compression spring 8 pushes the moving block 7 to the bottom of the airbag cavity 6, and when the massage head 2 massages the human body, the top of the airbag cavity 6 is easily compressed and deformed and softer; when the massage head 2 needs to be harder, the electromagnet 10 is energized, and the permanent magnet 9 in the moving block 7 is repelled and drives the moving block 7 to move toward the top of the airbag cavity 6 and press against the top of the airbag cavity 6, so that when the massage head 2 massages the human body, the top of the airbag cavity 6 is supported by the moving block 7 and is not easily deformed and is harder. A massage head assembly with adjustable hardness of the present invention can conveniently adjust the hardness of the massage head 2, change the hardness of the massage head 2 assembly by changing the supporting state of the flexible outer skin 5, and push the moving block 7 to move by the magnetic force of the electromagnet 10, and the structure is simple and compact. Moreover, the adjustment method using the electromagnetic principle is more convenient and reliable to implement, and the cost is low.

[0042] As a preferred embodiment, the base 4 is rotatably mounted on the connecting shaft 3. In this way, the massage head 2 can rotate freely when in contact with the human body, without giving a sluggish friction feeling, and the human body feels better.

[0043] To facilitate the connection between the base 4 and the connecting shaft 3, please refer to Figure 2 and Figure 3 A connecting tube 11 is provided at the center of the base 4, and the connecting shaft 3 is inserted into the inner hole of the connecting tube 11. The connecting tube 11 and the connecting shaft 3 are matched with each other in a micro-gap. The moving block 7 and the compression spring 8 are both sleeved on the outside of the connecting tube 11. The connecting tube 11 can rotate relative to the rotating shaft, and the moving block 7 is slidably connected to the connecting tube 11, so as to ensure that the moving block 7 moves smoothly and the direction is stable.

[0044] In order to facilitate the connection between the outer skin 5 and the base 4, as Figure 2 and Figure 3 As shown, the edge of the outer skin 5 close to the base 4 is connected to the groove on the edge of the base 4, the end of the connecting tube 11 close to the top of the airbag cavity 6 is provided with a first baffle ring 12 and a second baffle ring 13, and the edge of the outer skin 5 close to the top of the airbag cavity 6 is arranged between the first baffle ring 12 and the second baffle ring 13; a screw 14 is also screwed on the top of the connecting shaft 3, and a gasket 15 is provided between the screw 14 and the connecting tube 11. In this way, the massage head 2 will not fall off the connecting shaft 3.

[0045] like Figure 2 and Figure 3As shown, the end of the moving block 7 facing the top of the airbag cavity 6 is provided with a countersunk hole 16, and the compression spring 8 is against the bottom of the countersunk hole 16. In this way, when the electromagnet 10 is energized and the moving block 7 is pressed against the top of the airbag cavity 6, the compression spring 8 is compressed and deformed and accommodated in the countersunk hole 16 on the moving block 7, so that the moving block 7 can fully fit with the top of the airbag cavity 6. In order to make the moving block 7 fully fit with the top of the airbag cavity 6 when it is pressed against the top of the airbag cavity 6, the surface of the moving block 7 facing the top of the airbag cavity 6 is adapted to the inner surface of the top of the airbag cavity 6, and the side surface of the moving block 7 is adapted to the inner side wall of the airbag cavity 6.

[0046] In order to facilitate the installation of the permanent magnet 9 in the moving block 7, as shown in FIG. Figure 2 and Figure 3 As shown, a mounting groove 17 is provided on one side of the moving block 7 facing the bottom of the airbag cavity 6, and the permanent magnet 9 is disposed in the mounting groove 17, and the permanent magnet 9 can be fixed in the mounting groove 17 by screws.

[0047] In order to enable the electromagnet 10 to exert force on the permanent magnet 9 in the moving block 7, as shown in FIG. Figure 2 and Figure 3 As shown, the electromagnet 10 is coaxially opposite to the moving block 7 , and the electromagnet 10 is arranged in a disc shape, coaxially arranged with the connecting shaft 3 and opposite to the moving block 7 .

[0048] In order to allow the user to obtain a good massage sensation, the outer skin 5 of the massage head 2 is made of a soft and flexible material, for example, the outer skin 5 may be made of a rubber material.

[0049] Based on the technical solutions of the above embodiments, a massage head assembly with adjustable hardness of the present invention can conveniently adjust the hardness of the massage head 2, and the adjustment method using the electromagnetic principle is relatively convenient and reliable, and has low cost.

[0050] In summary, the present invention effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0051] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A massage head assembly with adjustable hardness, comprising a connecting shaft fixed to a massage arm, on which a massage head is mounted; the massage head comprises a base and an outer skin, wherein the base is connected to the connecting shaft, and the outer skin is arranged around the edge of the base to form an airbag cavity around the connecting shaft; the side of the airbag cavity close to the base is its bottom, and the side away from the base is its top, a moving block and a compression spring are arranged in the airbag cavity, the compression spring presses the moving block toward the bottom of the airbag cavity, a permanent magnet is arranged in the moving block, and an electromagnet is also connected to the massage arm, and when the electromagnet is energized, the moving block is pressed tightly against the top of the airbag cavity by the repulsive force of the electromagnet.

2. The massage head assembly with adjustable hardness according to claim 1, characterized in that: A connecting cylinder is arranged at the center of the base, the connecting shaft is passed through the inner hole of the connecting cylinder, and the moving block and the compression spring are both sleeved on the outside of the connecting cylinder.

3. The massage head assembly with adjustable hardness according to claim 2, characterized in that: A first retaining ring and a second retaining ring are provided at one end of the connecting tube close to the top of the airbag cavity, and the edge of the outer skin close to the top of the airbag cavity is arranged between the first retaining ring and the second retaining ring; a screw is also screwed on the top of the connecting shaft, and a gasket is provided between the screw and the connecting tube.

4. The massage head assembly with adjustable hardness according to claim 1, characterized in that: A countersunk hole is arranged at one end of the moving block facing the top of the airbag cavity, and the compression spring abuts against the bottom of the countersunk hole.

5. The massage head assembly with adjustable hardness according to claim 1, characterized in that: The surface of the moving block facing the top of the airbag cavity is matched with the inner surface of the top of the airbag cavity, and the side surface of the moving block is matched with the inner wall of the airbag cavity.

6. The massage head assembly with adjustable hardness according to claim 1, characterized in that: A mounting groove is provided on one side of the moving block facing the bottom of the airbag cavity, and the permanent magnet is arranged in the mounting groove.

7. The massage head assembly with adjustable hardness according to claim 1, characterized in that: The base is rotatably mounted on the connecting shaft.

8. The massage head assembly with adjustable hardness according to claim 1, characterized in that: The electromagnet is fixedly connected to the connecting shaft and is arranged opposite to the moving block.

9. The massage head assembly with adjustable hardness according to claim 1, characterized in that: The outer skin of the massage head is made of soft and flexible material.

10. The massage head assembly with adjustable hardness according to claim 9, characterized in that: The outer skin is made of rubber material.

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