CN109350853B - Adjustable magnetic cushion - Google Patents

Abstract

The utility model provides an adjustable magnetic pad, relates to the health supplies field at home, fills up and the adjustment including upper pad, the adjustment is filled up and is connected the lower surface of upper pad, the adjustment is filled up including the switching portion that is used for adjusting the magnetic field direction, the switching portion is including the spout, separate smooth straight board, separate smooth arc board and circular telegram post, is lieing in separate the inboard space of smooth arc board still have the hand driving lever on the circular telegram post, the hand driving lever is for certainly the straight-bar of the vertical downwardly extending of lower surface of circular telegram post still includes the backing plate, the backing plate is certainly the sheet metal of lower surface downwardly extending of switching portion, there is the spout of returning on the backing plate, the spout of returning be with separate the circular ring that the smooth arc board diameter is unanimous and lead to the groove, the hand driving lever can move in the spout of returning.

Description

Adjustable magnetic cushion

Technical Field

The invention relates to the field of household health supplies, in particular to an adjustable magnetic pad.

Background

In recent years, people pay more attention to the improvement of life quality, and the health care is gradually developed in all aspects of eating, wearing, living and going, and especially more and more people pay more attention to and pay more attention to health care, for example, in cold winter, many people relax tight bodies through passing a magnet sweat steam house and receive magnet magnetic field rehabilitation to improve energy, magnetic poles and feet gradually appear in home life, the blood circulation is promoted by adding a magnetic field while massaging feet, the magnetic field is generally considered to regulate an internal biological magnetic field, generate induction micro-current, change the permeability of cell membranes, change the activity of certain enzymes, expand blood vessels and accelerate blood flow, not only can achieve the auxiliary treatment effects such as pain relieving and swelling diminishing, but also can effectively improve the rest quality by utilizing the magnetic field, for example, a constant rotation strong magnetic comb is published in a Chinese patent application No. CN201610559385.4, including "comb frame and broach piece, the broach piece can dismantle and connect in the comb frame, the back of comb frame be equipped with rotatory strong magnetic means … … rotatory strong magnetic means include direct current motor and magnet, the magnet pass through the pivot in direct current motor and connect in direct current motor's one end", this technical scheme promotes the blood circulation of head through increasing magnetic field to the comb, but "the comb frame edge be equipped with pilot lamp and switch … … and still be equipped with the comb handle, the comb handle on be equipped with built-in battery and the interface that charges", switch over the logical of magnetic field through mechanical switch and close and strong and weak regulation, structural damage appears very easily, can not realize long-term use well.

Disclosure of Invention

The invention aims to provide an adjustable magnetic cushion, which improves the magnetic therapy effect by arranging a magnetic field with a variable direction in the magnetic cushion, completes the change of the direction of the magnetic field by a simple structure and reduces the degree of structural damage.

The technical purpose of the invention is realized by the following technical scheme: an adjustable magnetic pad, wherein, includes upper pad and adjustment pad, the adjustment pad is connected the lower surface of upper pad, the adjustment pad is including the switching part that is used for adjusting the magnetic field direction, switching part is including passing spout, smooth straight board, smooth arc board and the post that leads to of separating, pass the spout for from the vertical annular groove who upwards caves in of lower surface of adjustment pad, smooth straight board for connecting pass the plane board of the inside and outside wall of spout, smooth arc board for separating be from the vertical arc panel that extends downwards of the upper surface of spout and is unanimous with the crooked radian of spout, two the post that leads to pass through conductor wire and absolute wire and connect respectively, two the post that leads to lie in respectively the both sides of smooth straight board that separates to lie in respectively the different sides of smooth arc board that separates, the post that leads to be cylindrical conductor pole, still has the hand driving lever on the post that leads to lie in the inboard space of smooth arc board, the hand driving lever is a straight rod vertically extending downwards from the lower surface of the power-on column, and further comprises a bottom plate, the bottom plate is a thin plate extending downwards from the lower surface of the switching portion, a return chute is formed in the bottom plate, the return chute is a circular through groove with the diameter identical to that of the sliding-arc isolating plate, and the hand driving lever can move in the return chute.

The adjusting pad is electrified through the electrified columns and connected conducting wires to generate a magnetic field, for example, in an initial state, the electrified columns are connected with an insulated wire (or an insulated wire) through the conducting wires, the conducting wires at this time are arranged along the outer sides of the sliding arc isolating plates in an extending mode, the insulated wire extends from the inner sides of the sliding arc isolating plates to connect two electrified columns, the conducting wires can use copper wires, the insulated wire can use rubber, the electrified columns are connected with a power supply through conducting wires, one is connected with a positive pole of the power supply, the other is connected with a negative pole of the power supply, the power supply can be a battery, a neutral position or a small box for placing the power supply can be embedded into the lower surface of the adjusting pad, when the power supply is switched on, a closed loop is formed between the electrified columns and the conducting wires, and current flows from the electrified column at one end to the electrified column at the other end, the conductive wire is annular, so a magnetic field can be generated, at this time, if the direction of the magnetic field needs to be changed, the hand poking rod on the power-on post positioned in the space inside the sliding isolating arc plate can be operated, the hand poking rod is prevented from sliding along the inner side of the sliding isolating arc plate, the insulated wire connected between the power-on posts extrudes the power-on post on the other side, so that the power-on posts on two sides respectively perform rotary movement in different directions, for example, the power-on post positioned inside the sliding isolating arc plate performs clockwise rotation along the inner surface of the sliding isolating arc plate, the power-on post positioned outside the sliding isolating arc plate performs counterclockwise rotation along the outer surface of the sliding isolating arc plate, when the hand poking rod cannot move along the sliding back groove, the power-on posts stop moving, and the position between the two power-on posts is adjusted relative to the initial position, the current flow direction is changed from clockwise to anticlockwise, the direction of the magnetic field is opposite to the initial direction, so that the purpose of changing the direction of the magnetic field is achieved, the mode of changing the magnetic field by operating the hand lever by hand is straightforward, the operation can be clearly carried out, and the phenomenon of circuit instability caused by circuit switching can be avoided.

Preferably, the upper cushion comprises an elastic supporting layer, the elastic supporting layer comprises a supporting piece and a placing cavity, the placing cavity is a vertically extending cylindrical cavity, and the supporting piece is a spring attached to the side wall surface of the placing cavity.

Support piece can be the spring, places place the intracavity, the size of spring slightly is less than place the bore in chamber to make the outer wall of spring can support better in place on the wall in chamber, the elastic support layer can prevent better the deformation that upper cushion produced owing to receive inhomogeneous pressure takes place, because place the chamber and can set up a plurality ofly to carry out and arrange in turn, set up a plurality ofly or the spring elastic coefficient of laying is great in the more region of atress, thereby bears bigger pressure.

As preferred, still include the gas portion of filling, the gas portion of filling including the gas fill the strip, put a chamber and be used for right the gas fills the inflatable inflation inlet of strip, it includes puts a horizontal chamber and puts a perpendicular chamber of strip to put a chamber, it is certainly to put a horizontal chamber the inflation inlet to place the horizontal cavity that extends that the chamber direction is close to, it is certainly to put a perpendicular chamber of strip the terminal vertical upwards extension of putting a horizontal chamber is connected place the cavity in chamber, the gas fill the strip be certainly the inflation inlet along the air storage strip that the extending direction in putting a chamber was arranged.

The strip placing cavity is communicated with the placing cavity, the inflatable strip extends into the strip placing cavity from the inflating port, the inflatable strip is inflated through the inflating port, the saturation degree of the inflatable strip can be adjusted, and the hardness of the upper cushion is adjusted, when more gas is filled into the inflatable strip, the upper cushion becomes harder, conversely, when less gas is filled into the inflatable strip, the upper cushion becomes softer, the inflation amount in the inflatable strip is changed, the comfort level of the magnetic cushion can be adjusted, the support of the upper cushion can be improved by matching with the support, particularly, when the support or the spring is excessively extruded, an extrusion force is generated downwards, the lower end of the spring presses the inflatable strip, so that the gas in the inflatable strip placing cavity is locked, namely, the spring presses the inflatable strips to prevent the gas from escaping, and when the placing cavity is excessively pressed, the part of the inflatable strips is pressed to increase the pressure, so that the stress of the upper cushion is supported.

Preferably, the inflation inlet comprises an inner inflation portion and an outer inflation portion, the inner inflation portion is a hollow cylindrical barrel with one open end, the open end of the inner inflation portion is connected with the inflatable strip, the other end of the inner inflation portion is a solid seal, the outer inflation portion is a hollow cylindrical barrel with one open end and sleeved outside the inner inflation portion, the inner inflation portion comprises an inner inflation sliding groove, the outer inflation portion comprises an outer inflation sliding strip, the inner inflation sliding groove comprises an axial groove and a radial groove, the radial groove is an annular groove which is inwards recessed around the outer surface of the inner inflation portion, the axial groove is a straight strip groove which is perpendicular to the radial groove and extends towards one side far away from the inflatable strip, the outer inflation sliding strip is an annular protruding strip which extends towards the radial groove and perpendicular to the open end of the outer inflation portion, the inner inflation portion is provided with an inner through hole, and the inner through hole is a through hole which connects the outer surface of the inner inflation portion and the inner surface of the inner inflation portion, the outer filling part is provided with an outer through hole which is a through hole penetrating through the wall surface of the outer filling part.

The inflation port of the inflatable strip can be opened or closed by rotating the external inflation part, when the external inflation part needs to be inflated or deflated, the external inflation part is rotated, so that the external charging sliding strip rotates and slides in the radial groove until the external charging sliding strip can enter the axial groove, at the moment, the external charging part is pulled outwards by applying force, so that the outer inflating slide bar slides in the axial groove until the inner through hole and the outer through hole are overlapped, and at the moment, the overlapped outer through hole and the inner through hole can be inflated or the gas in the inflating bar can be freely discharged, when the gas in the gas filling strip reaches a desired value, the external filling part is pushed into the bottom of the axial groove to rotate the external filling part, so that the external charging sliding strip turns to the radial groove and can not slide to the axial groove any more, so that the inner through hole and the outer through hole cannot be overlapped to perform filling and releasing of the gas in the gas filling strip.

Preferably, the outer plug part is used for plugging the inner through hole, and the outer plug part is an arc-surface protruding particle which is protruded from the inner surface of the outer filling part to the inner through hole and is close to the protrusion.

Outer stifled portion can be in outer the draw runner that fills is located imbed during the radial inslot in the interior through-hole, avoid gas leaks gas in the gas strip, guarantees that atmospheric pressure in the gas strip is stable.

In summary, the present invention has the following advantages.

1. The magnetic therapy effect is improved by arranging the magnetic field with the changeable direction in the magnetic pad, the change of the direction of the magnetic field is completed through a simple structure, and the degree of structural damage is reduced.

2. The softness and hardness of the upper cushion can be adjusted by adjusting the saturation degree of the inflatable strips.

3. The gas charging part realizes the change of gas in the gas charging strip through rotation and movement.

Drawings

Fig. 1 is a general schematic view of an adjustable magnetic pad.

Fig. 2 is a bottom view of the adjustable magnetic pad.

Fig. 3 is a view of fig. 2 with the backing plate removed.

Fig. 4 is a schematic view of a resilient support layer.

Fig. 5 is a schematic view of the structure of the inflation port.

Fig. 6 is a schematic diagram of the multi-stage switch.

In the figure: 11. the device comprises an upper layer pad, 12, an adjusting pad, 21, a sliding groove, 22, a sliding isolating straight plate, 23, a sliding isolating arc plate, 25, a power-on column, 26, a sliding groove, 31, a support piece, 32, a placing cavity, 41, an air charging strip, 51, an inner charging part, 52, an outer charging part, 61, a strong energy key, 62 and a weak energy key.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Embodiment 1, fig. 1 is a schematic view of an adjustable magnetic pad. An adjustable magnetic pad, as shown in fig. 1, 2 and 3, comprises an upper pad 11 and an adjusting pad 12, wherein the adjusting pad 12 is connected to the lower surface of the upper pad 11, the adjusting pad 12 comprises a switching portion for adjusting the direction of a magnetic field, the switching portion comprises a sliding groove 21, a sliding isolating straight plate 22, a sliding isolating arc plate 23 and a current-carrying post 25, the sliding groove 21 is a circular groove vertically recessed upwards from the lower surface of the adjusting pad 12, the sliding isolating straight plate 22 is a flat plate connected to the inner and outer wall surfaces of the sliding groove 21, the sliding isolating arc plate 23 is an arc-shaped panel vertically extending downwards from the upper surface of the sliding groove 21 and consistent with the curvature of the sliding groove 21, the two current-carrying posts 25 are respectively connected through a conductive wire and an insulating wire, the two current-carrying posts 25 are respectively located at two sides of the sliding isolating straight plate 22 and respectively located at different sides of the sliding isolating arc plate 23, the current-carrying posts 25 are cylindrical conductive rods, still have the hand driving lever on being located the circular telegram post 25 that separates the inboard space of slide-arc plate 23, the hand driving lever is the straight-bar of the vertical downwardly extending of lower surface from circular telegram post 25, still includes the backing plate, and the backing plate is the sheet metal of the lower surface downwardly extending from switching part, has the spout 26 of returning on the backing plate, and the spout 26 of returning is for leading to the groove with separating the ring that slide-arc plate 23 diameter is unanimous, and the hand driving lever can remove in the spout 26 of returning. The adjusting pad 12 is powered on by the power-on post 25 and the connected conductive wire to generate a magnetic field, for example, in an initial state, the power-on post 25 is connected with the insulated wire (or the insulated wire) through the conductive wire and the insulated wire, wherein the conductive wire is extended along the outer side of the sliding arc isolating plate 23 at this time, the insulated wire is extended from the inner side of the sliding arc isolating plate 23 to connect two power-on posts 25, the conductive wire can use a copper wire, the insulated wire can use rubber, the power-on posts 25 are connected with a power supply through a conductive wire, one power-on post is connected with a positive electrode of the power supply, the other power-on post is connected with a negative electrode of the power supply, the power supply can be a battery, a neutral position or a small box for placing the power supply can be embedded in the lower surface of the adjusting pad 12, when the power supply is powered on, a closed loop is formed between the power-on post 25 and the conductive wire, current flows from the power-on post 25 at one end to the power-on post 25 at the other end, and the conductive wire is in a ring shape, so that the magnetic field can be generated, at this time, if the direction of the magnetic field needs to be changed, the hand lever on the current-carrying post 25 located in the space inside the sliding arc isolating plate 23 can be operated to prevent the hand lever from sliding along the inside of the sliding arc isolating plate 23, the dead wire connected between the current-carrying posts 25 presses the current-carrying post 25 on the other side, so that the current-carrying posts 25 on both sides respectively rotate in different directions, for example, the current-carrying post 25 located inside the sliding arc isolating plate 23 rotates clockwise along the inner surface of the sliding arc isolating plate 23, the current-carrying post 25 located outside the sliding arc isolating plate 23 rotates counterclockwise along the outer surface of the sliding arc isolating plate 23, when the hand lever cannot move along the sliding chute 26, the current-carrying posts 25 stop moving, at this time, the position between the two current-carrying posts 25 is adjusted relative to the initial position, the current flow direction is also changed from clockwise to counterclockwise, and the direction of the magnetic field is opposite to the initial direction, thereby achieving the purpose of changing the direction of the magnetic field counterclockwise, the method of changing the magnetic field by operating the hand lever by hand is straightforward, can be operated clearly, and can avoid the phenomenon of circuit instability caused by circuit switching. As shown in fig. 4, the upper cushion 11 includes a resilient supporting layer including a supporting member 31 and a placing chamber 32, the placing chamber 32 is a vertically extending cylindrical cavity, and the supporting member 31 is a spring attached to a sidewall surface of the placing chamber 32. Support piece 31 can be the spring, place and place in placing chamber 32, the size of spring slightly is lighter than the bore of placing chamber 32, thereby make the outer wall of spring can support better on placing the wall of chamber 32, the elastic support layer can prevent upper cushion 11 better because receive the deformation that inhomogeneous pressure produced and take place, because place chamber 32 and can set up a plurality ofly, and carry out a plurality of range, it is great to set up a plurality ofly or the spring elastic coefficient who lays in the more region of atress, thereby bear bigger pressure. As shown in fig. 4 and 5, the inflatable device further comprises an inflatable portion, the inflatable portion comprises an inflatable strip 41, a strip placing cavity and an inflation port for inflating the inflatable strip 41, the strip placing cavity comprises a strip placing transverse cavity and a strip placing vertical cavity, the strip placing transverse cavity is a horizontally extending cavity which is close to the direction of the strip placing cavity 32 from the inflation port, the strip placing vertical cavity is a cavity which is vertically and upwardly extended from the tail end of the strip placing transverse cavity and connected with the strip placing cavity 32, and the inflatable strip 41 is an inflatable strip which is arranged along the extending direction of the strip placing cavity from the inflation port. The strip placing cavity is communicated with the placing cavity 32, the gas charging strip 41 extends into the strip placing cavity from the gas charging port to the placing cavity 32, the gas charging strip 41 is charged through the gas charging port, the saturation degree of the gas charging strip 41 can be adjusted, so that the hardness of the upper cushion 11 is adjusted, when more gas is filled into the gas charging strip 41, the upper cushion 11 becomes harder, conversely, when less gas is filled into the gas charging strip 41, the upper cushion 11 becomes softer, the charging amount in the gas charging strip 41 is changed to adjust the comfort degree of the magnetic cushion, the support property of the upper cushion 11 can be improved by matching with the support 31, particularly, when the support 31 or the spring is excessively pressed, an extrusion force is generated downwards, the lower end of the spring presses the gas charging strip 41, so that the gas in the part of the gas charging strip 41 in the placing cavity 32 is locked, namely, the spring presses the gas charging strip 41 to prevent the gas from escaping, when the placing chamber 32 is excessively pressed, the portion of the pneumatic strip 41 is pressed to increase the pressure, thereby supporting the force of the upper cushion 11. As shown in fig. 5, the inflation inlet comprises an inner inflation portion 51 and an outer inflation portion 52, the inner inflation portion 51 is a cylindrical tube with one open end and a hollow interior, the open end of the inner inflation portion 51 is connected with the inflation strip 41, the other end is a solid seal, the outer inflation portion 52 is sleeved on the outer side of the inner inflation portion 51, the open inside hollow cylinder of one end, interior portion 51 of filling is including filling the spout in, outer portion 52 of filling is including filling the draw runner outward, it includes axial slot and radial groove to fill the spout in, radial groove is for encircleing the inside sunken ring channel of the surface of portion 51 of filling in, the axial slot is perpendicular radial groove to keeping away from the straight strip recess that fills strip 41 one side extension of filling, outer draw runner is the annular sand grip that the open end internal surface of portion 52 of filling outward extends to radial groove, interior portion 51 is last to have interior through-hole, interior through-hole is for connecting the perforation of the surface of portion 51 of filling in and the internal surface of portion 51 of filling, outer portion 52 of filling has outer through-hole, outer through-hole is for the perforation of the wall that runs through outer portion 52 of filling. The inflation inlet of the inflatable strip 41 can be opened or closed by rotating the external inflation portion 52, when the inflatable strip 41 needs to be inflated or deflated, the external inflation portion 52 is rotated, so that the external inflation sliding strip can rotationally slide in the radial groove to enter the axial groove, at the moment, the external inflation portion 52 is pulled outwards by force application, so that the external inflation sliding strip slides in the axial groove until the inner through hole and the outer through hole are overlapped, at the moment, the overlapped outer through hole and the inner through hole can be inflated or the gas in the inflatable strip 41 can be freely discharged, when the gas in the inflatable strip 41 reaches a desired value, the external inflation portion 52 is pushed into the bottom of the axial groove, the external inflation portion 52 is rotated, so that the external inflation sliding strip turns to the radial groove, the external inflation sliding strip cannot continuously slide towards the axial groove, and the inner through hole and the outer through hole cannot be overlapped to fill and release the gas in the inflatable strip 41. And the outer plugging part is an arc-surface protruding particle which is close to the inner through hole and protrudes from the inner surface of the outer charging part 52 to the inner through hole. The outer blocking part can be embedded into the inner through hole when the outer inflating sliding strip is positioned in the radial groove, so that gas leakage in the gas inflating strip 41 is avoided, and the stability of the gas pressure in the gas inflating strip 41 is ensured.

As shown in fig. 6, a multi-step switch can be further disposed on the side of the adjusting pad 12, the multi-step switch is connected to the electric pole 25 through an electric wire to change the magnitude of the magnetic force or the magnetic field, wherein the multi-step switch can be a multi-step switching circuit in the prior art, such as a vertical electric fan or a wall-hanging electric fan commonly used in household appliances, such electric fans are generally provided with a plurality of speed steps on the housing for selection, which are sequentially strong, medium, and weak wind forces, so that the multi-step switch on the side of the adjusting pad 12 also has a plurality of strength buttons, wherein the multi-step switch includes a strong key 61 and a weak key 62, the top view shape of the strong key 61 and the weak key 62 is a quarter circle with one side opposite to the other, the strong identification groove is further provided on the strong key 61, the strong identification groove is a vertical groove recessed from the outer surface of the strong key 61, and the weak identification groove is further provided on the weak key 62, the weak recognition groove is from the inside sunken vertical strip groove of weak energy key 62's surface, the quantity in strong recognition groove can be more than the weak recognition groove, like this, when the people touches strong energy key 61 and weak energy key 62, can judge strong and weak button through the quantity in strip groove, meanwhile, because the side surface of strong energy key 61 and weak energy key 62 is the cambered surface, the atress can be realized to vertical strip groove, prevent that the finger from skidding when the button, and is last, can set up the well shelves key between strong energy key 61 and weak energy key 62, the overlooking shape of well shelves key can be the rectangle, when switching to well shelves, the magnetic field size is located between strong energy key 61 and the weak energy key 62.

Claims (5)

1. The adjustable magnetic pad is characterized by comprising an upper pad (11) and an adjusting pad (12), wherein the adjusting pad (12) is connected to the lower surface of the upper pad (11), the adjusting pad (12) comprises a switching part for adjusting the direction of a magnetic field, the switching part comprises a sliding groove (21), a sliding straight plate (22), a sliding arc plate (23) and a power-on post (25), the sliding groove (21) is a circular groove which is vertically and upwards sunken from the lower surface of the adjusting pad (12), the sliding straight plate (22) is a plane plate which is connected to the inner wall surface and the outer wall surface of the sliding groove (21), the sliding arc plate (23) is an arc-shaped panel which vertically and downwards extends from the upper surface of the sliding groove (21) and is consistent with the bending radian of the sliding groove (21), and the power-on posts (25) are respectively connected through a conducting wire and an absolute wire, two circular telegram post (25) are located respectively separate the both sides of smooth straight board (22), and are located respectively separate the different sides of smooth arc board (23), and circular telegram post (25) pass through the wire and connect the power, and a connection power positive pole, a connection power negative pole, circular telegram post (25) are cylindrical conducting rod, are located separate smooth arc board (23) inboard space still have the hand driving lever on circular telegram post (25), the hand driving lever is certainly the straight-bar of the vertical downwardly extending of lower surface of circular telegram post (25), still includes the backing plate, the backing plate is for certainly the sheet metal of lower surface downwardly extending of switching part, there is spout (26) on the backing plate, return spout (26) for with separate smooth arc board (23) diameter unanimous ring through groove, the hand driving lever can move in the spout (26).

2. An adjustable magnetic cushion according to claim 1, wherein the upper cushion (11) comprises a resilient supporting layer, the resilient supporting layer comprises a support (31) and a placing cavity (32), the placing cavity (32) is a vertically extending cylindrical cavity, and the support (31) is a spring attached to a side wall surface of the placing cavity (32).

3. The adjustable magnetic cushion according to claim 2, further comprising an air inflation portion, wherein the air inflation portion comprises an air inflation strip (41), a strip placing cavity and an inflation inlet for inflating the air inflation strip (41), the strip placing cavity comprises a strip placing transverse cavity and a strip placing vertical cavity, the strip placing transverse cavity is a horizontally extending cavity which is close to the direction of the strip placing cavity (32) from the inflation inlet, the strip placing vertical cavity is a cavity which is vertically and upwardly extended from the tail end of the strip placing transverse cavity and connected with the strip placing cavity (32), and the air inflation strip (41) is an air storage strip which is arranged along the extending direction of the strip placing cavity from the inflation inlet.

4. An adjustable magnetic cushion according to claim 3, wherein the inflation inlet comprises an inner inflation portion (51) and an outer inflation portion (52), the inner inflation portion (51) is a cylindrical cylinder with an open end, the open end of the inner inflation portion (51) is connected to the inflatable strip (41), the other end is a solid seal, the outer inflation portion (52) is a cylindrical cylinder with an open end and sleeved outside the inner inflation portion (51), the inner inflation portion (51) comprises an inner inflation sliding groove, the outer inflation portion (52) comprises an outer inflation sliding strip, the inner inflation sliding groove comprises an axial groove and a radial groove, the radial groove is an annular groove recessed inwards around the outer surface of the inner inflation portion (51), the axial groove is a straight strip groove extending towards the side far away from the inflatable strip (41) and perpendicular to the radial groove, and the outer inflation sliding strip is an annular convex strip extending towards the radial groove and perpendicular to the inner surface of the open end of the outer inflation portion (52), the inner filling part (51) is provided with an inner through hole which is a through hole for connecting the outer surface of the inner filling part (51) and the inner surface of the inner filling part (51), the outer filling part (52) is provided with an outer through hole which is a through hole penetrating through the wall surface of the outer filling part (52).

5. The adjustable magnetic cushion according to claim 4, further comprising an outer blocking portion for blocking the inner through hole, wherein the outer blocking portion is a protruding bump formed from an inner surface of the outer filling portion (52) to a convex surface near the inner through hole.

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