CN111938385A

CN111938385A - Sleep-aiding pillow

Info

Publication number: CN111938385A
Application number: CN202010915733.3A
Authority: CN
Inventors: 武贵斌; 王梓慕; 王人禾; 刘晴晴; 赵晴
Original assignee: Ansheng Health Technology Tianjin Co ltd
Current assignee: Ansheng Health Technology Tianjin Co ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2020-11-17

Abstract

The invention provides a sleep-aiding pillow which comprises a bone conduction earphone, a pillow body, an electricity storage device and a charging assembly, wherein the electricity storage device and the charging assembly are both arranged on the pillow body; the charging assembly comprises a track pad, the track pad is installed on the pillow body, a guide groove corresponding to the bone conduction earphone is formed in the track pad, a charging electrode is arranged on the guide groove and connected with the electricity storage device, a power receiving electrode corresponding to the charging electrode is arranged on the bone conduction earphone, and the power receiving electrode is connected with an energy storage module inside the bone conduction earphone. The sleep-aiding pillow provided by the invention solves the problem that the sound listening effect is poor when the loudspeaker is fixed in the pillow.

Description

Sleep-aiding pillow

Technical Field

The invention belongs to the field of sleep-aiding health-care equipment, and particularly relates to a sleep-aiding pillow.

Background

The insomnia is difficult to fall asleep, easy to wake up and early wake up in the middle of sleep, low sleep quality, obviously reduced sleep time, and the serious patients still do not sleep all night. Long-term insomnia is easy to cause upset, fatigue and weakness, even headache, dreaminess, hyperhidrosis and hypomnesis, and can also cause a series of clinical symptoms and induce some psychosomatic diseases.

In recent years, new sleep-aid techniques have appeared, and one of them is sleep-aid using specific audio. In daily environments, sound is mainly transmitted through air or other related media, and the traditional in-ear type or out-hanging type sound is transmitted through air vibration (the sound is transmitted to an eardrum through air and then to auditory nerves through the eardrum); and bone conduction directly conducts sound to our auditory nerve in a sound wave mode by means of our head temporal bone, so that the effect of listening to sound is achieved. This revolutionary design completely frees the ears from fear of damaging the eardrum and hearing loss, and allows the sound to be heard without affecting others at all. At present, a speaker and an audio generator are generally arranged in a bone conduction sleep-aiding pillow, and due to the fact that the position of the speaker is fixed, when a user lies on the pillow, the head resting position changes, and the change of the position relation between the head and the speaker can influence the listening effect.

Disclosure of Invention

In view of this, the invention provides a sleep-aiding pillow to solve the problem that the listening effect is poor when the speaker is fixed inside the pillow.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a sleep-aiding pillow comprises a bone conduction earphone, a pillow body, an electricity storage device and a charging assembly, wherein the electricity storage device and the charging assembly are both arranged on the pillow body, the charging assembly is electrically connected with the electricity storage device, and the bone conduction earphone is arranged on the charging assembly;

the bone conduction earphone is characterized in that the charging assembly comprises a track pad and a charging electrode, the track pad is installed on the pillow body, a guide groove corresponding to the bone conduction earphone is formed in the track pad, the charging electrode is installed on the guide groove and connected with a power storage device, a power receiving electrode corresponding to the charging electrode is arranged on the bone conduction earphone, and the power receiving electrode is connected with an energy storage module inside the bone conduction earphone.

Further, the shell of bone conduction earphone is ring shape with the guide way matched with, receives the electrode and sets up along bone conduction earphone's shell circumference, and it is protruding that the positive pole of receiving the electrode is semicircle annular, and the positive pole outside of receiving the electrode is the negative pole of receiving the electrode, and the negative pole of receiving the electrode is sunken to form the recess to the direction of the shell of bone conduction earphone, and charging electrode installs on the guide way along guide way length direction, and charging electrode's positive pole and negative pole correspond the setting with the positive pole and the negative pole of receiving the electrode.

Furthermore, the guide grooves are multiple and are arranged on the track pads in parallel.

Furthermore, magnetic pastes are fixed on the inner wall of the guide groove along the length direction, and the magnetic pastes corresponding to the inner wall of the guide groove are fixed on the upper part and the lower part of the shell of the bone conduction earphone;

furthermore, a filler strip is also arranged on the guide groove.

Furthermore, a coil is circumferentially arranged on the outer side of the shell of the bone conduction earphone, the coil rotates rightwards and is wound with a plurality of circles, and the coil is connected with a power amplifier module of the bone conduction earphone.

Furthermore, the pillow body and the track pad are sleeved with a dustproof pad, and the dustproof pad is provided with a strip-shaped opening corresponding to the guide groove.

Furthermore, an eyeshade for shading light is fixed on the shell of the bone conduction earphone.

Further, a conduction assembly is further installed on the inner side of the shell of the bone conduction earphone;

furthermore, the conduction assembly comprises a first air bag, a second air bag and a third air bag which are sequentially fixed on the inner side of the shell along the length direction of the shell of the bone conduction earphone.

Further, first gasbag encircles the setting of first contact, and the third gasbag encircles the setting of second contact, and first contact and second contact are all not higher than the arch of other positions of gasbag under the recovery state, and supporting component is installed with the position that first contact corresponds to the shell inboard of first gasbag department, and supporting component is installed with the position that second contact corresponds to the shell inboard of third gasbag department.

Furthermore, the support component comprises a first annular air bag and a second annular air bag, the first annular air bag is fixed on the inner side of the shell of the first air bag, the second annular air bag is fixed on the inner side of the shell of the third air bag, the first annular air bag is arranged corresponding to the first contact, the second annular air bag is arranged corresponding to the second contact, a first elastic part is arranged at the central position of the first annular air bag, one end of the first elastic part is fixedly connected with the shell of the bone conduction earphone, the other end of the first elastic part is fixedly connected with the first contact, a second elastic part is arranged at the central position of the second annular air bag, one end of the second elastic part is fixedly connected with the shell of the bone conduction earphone, the other end of the second elastic part is fixedly connected with the second contact, the first air bag is communicated with the second annular air bag through a pipeline, the third air bag is communicated with the first annular air bag through a pipeline, the second annular air bag is communicated.

Compared with the prior art, the invention has the following advantages:

(1) the invention provides a sleep-aiding pillow, wherein a rail pad is matched with a bone conduction earphone, so that a user can freely change the lying posture, the listening effect of audio can be kept unchanged, and meanwhile, the bone conduction earphone can be used for supplying power through the matching of a charging electrode and a power receiving electrode.

(2) The conduction subassembly and supporting component can make bone conduction earphone and head laminate more, make it reach good audio frequency listening state, the head does not produce uncomfortable sense under any posture moreover, simultaneously, combines the pillow body to have solved the user and has had the problem of foreign matter sense when wearing the earphone to lie, makes it get into the sleep state under more comfortable, more healthy circumstances.

(3) The bone conduction earphones can be adjusted in position according to requirements in each guide groove at the top of the track pad.

(4) The head band coil can generate a pulse magnetic field under specific frequency audio frequency to induce sleep, so that the sleep quality is improved, and the body health is kept.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:

fig. 1 is a schematic view of a sleep-aid pillow according to the embodiment of the present invention;

fig. 2 is an exploded schematic view of a sleep-aid pillow according to the embodiment of the present invention;

FIG. 3 is a schematic view of a charging electrode and a gasket according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a power receiving electrode according to an embodiment of the invention;

fig. 5 is a schematic diagram of a bone conduction headset and a conduction assembly according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a bone conduction headset and a conduction assembly according to an embodiment of the present invention;

FIG. 7 is a schematic view of a support assembly according to an embodiment of the present invention;

fig. 8 is a cross-sectional view of a support assembly according to an embodiment of the present invention.

Description of reference numerals:

1-bone conduction headphones; 2-dust-proof pad; 21-a strip-shaped opening; 3-a filler strip; 4-a track pad; 41-a guide groove; 5-pillow body; 6-an electricity storage device; 7-a coil; 8-a first balloon; 9-a second balloon; 10-a third balloon; 11-a first contact; 12-a second contact; 13-eye mask; 14-a charging electrode; 15-a power receiving electrode; 16-a first elastic member; 17-first annular bladder.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.

As shown in fig. 1 and 2, a sleep-aiding pillow comprises a bone conduction earphone 1, a pillow body 5, an electricity storage device 6 and a charging assembly, wherein the electricity storage device 6 and the charging assembly are both mounted on the pillow body 5, the charging assembly is electrically connected with the electricity storage device 6, and the bone conduction earphone 1 is arranged on the charging assembly;

the subassembly that charges includes track pad 4, and track pad 4 is installed on pillow body 5, pillow body 5 is conventional pillow shape, and its intermediate position is equipped with the recess and is used for fixed connection track pad 4, and both sides all are equipped with the magic subsides around it, paste through the magic and fill up 4 fixed connection with the track, be equipped with the guide way 41 that corresponds with bone conduction earphone 1 on the track pad 4, be equipped with charging electrode 14 on the guide way 41, charging electrode 14 links to each other with power storage device 6, be equipped with on the bone conduction earphone 1 and receive electrode 15 with charging electrode 14 correspondence, receive electrode 15 and the inside energy storage module of bone conduction earphone link to each other. The energy storage module inside the bone conduction earphone 1 can form a compensation function with the electricity storage device 6 on the left side of the pillow body 5, and when the bone conduction earphone 1 is separated from the charging electrode 14 for a long time, the bone conduction earphone can still work normally and stably.

As shown in fig. 3 and 4, the housing of the bone conduction earphone 1 is a circular ring shape matching with the guide groove 41, the power receiving electrode 15 is arranged along the circumferential direction of the housing of the bone conduction earphone 1, the positive electrode of the power receiving electrode 15 is a semicircular projection, the negative electrode of the power receiving electrode 15 is arranged outside the positive electrode of the power receiving electrode 15, the negative electrode of the power receiving electrode 15 is recessed towards the housing of the bone conduction earphone 1 to form a groove, the charging electrode 14 is mounted on the guide groove 41 along the length direction of the guide groove 41, and the positive electrode and the negative electrode of the charging electrode 14 are arranged corresponding to the positive electrode and the negative electrode of the power receiving electrode 15.

As shown in fig. 1 and 2, the guide grooves 41 are provided in plural, and the plural guide grooves 41 are provided in parallel on the rail pad 4.

As shown in fig. 1 and 2, magnetic patches are fixed on the inner wall of the guide groove 41 along the length direction, and the magnetic patches corresponding to the inner wall of the guide groove 41 are fixed on both the upper part and the lower part of the housing of the bone conduction earphone 1;

still install filler strip 3 on the guide way 41, filler strip 3 imbeds according to the shape of guide way 41 and electrode, fills the guide way 41 and levels, improves the use comfort level of sleeping aid pillow, plays insulating protection simultaneously and does.

The receiving electrode that bone conduction headset 1 corresponds and the charging electrode that guide way 41 corresponds carry on spacingly through the magnetic paste of relevant position, and bone conduction headset 1 can be placed in each guide way 41 at track pad 4 top moreover, can adjust the position as required.

As shown in fig. 5 and 6, a coil 7 is circumferentially installed on the outer side of the casing of the bone conduction earphone 1, the coil 7 is wound with a plurality of turns in a rightward rotating manner, and the coil 7 is connected with a power amplifier module of the bone conduction earphone 1. The head hoop coil 7 surrounds the head to form a short tube shape, the coil 7 is wound by adopting a plurality of strands of enameled wires in a right-handed mode, and the pulse magnetic field generated after current flows through the coil 7 is ensured to be emitted from the head top to the deep direction of the brain according to the right-handed rule.

As shown in figure 2, the outside of the pillow body 5 and the track pad 4 is also sleeved with a dustproof pad 2, and the dustproof pad 2 is provided with a strip-shaped opening 21 corresponding to the guide groove 41.

As shown in fig. 5 and 6, an eye cover 13 for shielding light is fixed to the housing of the bone conduction headset 1.

As shown in fig. 5 and 6, a conductive component is further mounted on the inner side of the housing of the bone conduction headset 1;

the conduction assembly comprises a first air bag 8, a second air bag 9 and a third air bag 10, and the first air bag 8, the second air bag 9 and the third air bag 10 are sequentially fixed on the inner side of the shell along the length direction of the shell of the bone conduction earphone 1.

As shown in fig. 5 and 6, the first airbag 8 is disposed around the first contact 11, the third airbag 10 is disposed around the second contact 12, the first contact 11 and the second contact 12 are not higher than the protrusions of other positions of the airbags in the recovery state, a support assembly is installed at a position corresponding to the first contact 11 on the inner side of the housing of the first airbag 8, and a support assembly is installed at a position corresponding to the second contact 12 on the inner side of the housing of the third airbag 10.

As shown in fig. 5 and 6, the support assembly includes a first annular air bag 17 and a second annular air bag, the first annular air bag 17 is fixed inside the housing of the first air bag 8, the second annular air bag is fixed inside the housing of the third air bag 10, the first annular air bag 17 is disposed corresponding to the first contact 11, the second annular air bag is disposed corresponding to the second contact 12, a first elastic member 16 is installed at the center of the first annular air bag 17, one end of the first elastic member 16 is fixedly connected to the housing of the bone conduction earphone 1, the other end is fixedly connected to the first contact 11, a second elastic member is installed at the center of the second annular air bag, one end of the second elastic member is fixedly connected to the housing of the bone conduction earphone 1, the other end is fixedly connected to the second contact 12, the first air bag 8 is communicated with the second annular air bag through a pipeline, the third air bag 10 is communicated with the first annular air bag 17 through a pipeline, the second air bag 9 is respectively communicated with the first annular air bag 17 and the second annular air bag through pipelines. The conduction subassembly makes bone conduction earphone 1 and head laminate more, makes it reach good audio frequency listening state, and the head does not produce uncomfortable sense under any posture moreover, simultaneously, combines pillow body 5 to have solved the user and has had the problem of foreign matter sense when wearing the earphone to lie, makes it more comfortable, gets into the sleep state under more healthy circumstances.

In the first embodiment, the bone conduction earphone 1 is magnetically attracted to the track pad 4 through the peripheral magnetic paste and the fine slit of the dustproof pad 2, and the magnetic paste is arranged at the corresponding position of the track pad 4 and mutually and magnetically attracted and fixed with the peripheral magnetic paste of the bone conduction earphone 1; the track pad 4 is provided with a plurality of guide grooves 41, which are suitable for adjusting the position of the bone conduction earphone 1 and adapting to different users; the cushion strip 3 covers the unused guide groove 41, so that the comfort of a user is improved; the track pad 4 is fixedly connected on the pillow body 5, and the side surface of the pillow body 5 is provided with an electricity storage device 6. The user opens the invention through the switch on the side of the electricity storage device 6, wears the bone conduction earphone 1 at the same time, and opens the switch on the bone conduction earphone 1, lies flat or lies on the side on the pillow, when lying flat, the head presses the second air bag 9 to make the bottom annular air bag of the first contact 11 and the bottom annular air bag of the second contact 12 communicated with the second air bag expand to drive the bone conduction playing module inside the bone conduction earphone 1 to contact with the head, at the moment, the earphone plays the sleep-aid audio for the user to listen through the bone conduction module, when the frequency of the played audio is in the range of 1Hz to 3Hz, the head hoop coil 7 can simultaneously transmit the pulse magnetic field with the corresponding frequency to the brain, thereby entering the sleep state under the action of the comfortable body position, the sleep-aid audio and the pulse magnetic field. The timing function on the bone conduction earphone 1 can be used for closing the sound playing at regular time, so that the influence of the user on the sleep after the user enters the sleep is prevented, and a good sleep-helping effect is achieved.

In the second embodiment, the bone conduction earphone 1 is magnetically attracted to the track pad 4 through the peripheral magnetic paste and the fine slit of the dustproof pad 2, and the magnetic paste arranged at the corresponding position of the track pad 4 and the peripheral magnetic paste of the bone conduction earphone 1 are mutually magnetically attracted and fixed; the track pad 4 is provided with a plurality of guide grooves 41, which are suitable for adjusting the position of the bone conduction earphone 1 and adapting to different users; the cushion strip 3 covers the unused guide groove 41, so that the comfort of a user is improved; the track pad 4 is fixedly connected on the pillow body 5, and the side surface of the pillow body 5 is provided with an electricity storage device 6. The user turns on the invention through the switch on the side of the electricity storage device 6, wears the bone conduction earphone 1 at the same time, turns on the switch on the bone conduction earphone 1, lies flat or lies on the side on the pillow, when lying on side, the head presses the first air bag 8 (or the third air bag 10) to make the annular air bag at the bottom of the second contact 12 (or the first contact 11) communicated with the first air bag expand to drive the bone conduction playing module to contact with the head, meanwhile, the corresponding first contact 11 (second contact 12) presses the annular air bag under the action of the bottom recovery spring to enable the annular air bag to be in an initial flattening state, therefore, the head does not feel the foreign body sensation, the bone conduction playing module contacted with the head plays the sleep-aiding audio to the user for listening, when the frequency of playing audio is in the range of 1Hz to 3Hz, the head band coil 7 will simultaneously emit the pulse magnetic field with the corresponding frequency to the brain, thereby entering a sleep state under the action of a comfortable body position, sleep-assisting audio and a pulse magnetic field. The timing function on the bone conduction earphone 1 can be used for closing the sound playing at regular time, so that the influence of the user on the sleep after the user enters the sleep is prevented, and a good sleep-helping effect is achieved.

In the third embodiment, the head coil 7 generates the pulsed magnetic field with a specific frequency and the bone conduction playing module can work simultaneously or separately, and can be combined or used separately according to the preference of the user.

The sleep-aiding pillow provided by the invention can not only assist sleep under the shading effect in the form of the eye-mask type earphone, but also play sleep-aiding audio to a user in the form of the bone conduction earphone, so that the effect of assisting sleep by the audio can be achieved without affecting other people. The bone conduction earphone 1 directly conducts sound to our auditory nerve in a sound wave mode by means of our head temporal bone, so that the effect of our listening to sound is achieved, ears are completely liberated, and the eardrum is not worried to be hurt to damage the hearing. Meanwhile, the pillow solves the problem that a user feels foreign bodies when the user lies with the earphones, so that the user can enter a sleep state under the conditions of more comfort and more health. The invention considers that a part of the head is always in a stress state in the lying posture, and the pressure control bone conduction playing module is applied to be more attached to the head, so that the head can achieve a good audio listening state, and the head does not feel uncomfortable in any posture. Meanwhile, the pulse magnetic field generated by the head band coil 7 can induce sleep under specific frequency audio frequency, so that the sleep quality is improved, and the body health is kept.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.

Claims

1. A sleep-aiding pillow is characterized in that: the bone conduction earphone comprises a bone conduction earphone (1), a pillow body (5), an electricity storage device (6) and a charging assembly, wherein the electricity storage device (6) and the charging assembly are both installed on the pillow body (5), the charging assembly is electrically connected with the electricity storage device (6), and the bone conduction earphone (1) is arranged on the charging assembly;

the utility model discloses a bone conduction earphone, including pillow body (5), the subassembly that charges includes track pad (4), charging electrode (14), track pad (4) are installed on pillow body (5), be equipped with guide way (41) that correspond with bone conduction earphone (1) on track pad (4), charging electrode (14) are installed on guide way (41), charging electrode (14) link to each other with power storage device (6), be equipped with on bone conduction earphone (1) and receive electrode (15) that correspond with charging electrode (14), it links to each other with the inside energy storage module of bone conduction earphone (1) to receive electrode (15).

2. A sleep aid pillow as defined in claim 1, wherein: the shell of bone conduction earphone (1) is for the ring shape with guide way (41) matched with, receive electrode (15) along the shell circumference setting of bone conduction earphone (1), the anodal semicircle ring of receiving electrode (15) is protruding, the anodal outside of receiving electrode (15) is the negative pole of receiving electrode (15), the negative pole of receiving electrode (15) is sunken to form the recess to the direction of the shell of bone conduction earphone (1), install on guide way (41) along guide way (41) length direction charging electrode (14), the positive pole and the negative pole of charging electrode (14) and the positive pole and the negative pole of receiving electrode (15) correspond the setting.

3. A sleep aid pillow as defined in claim 2, wherein: the guide grooves (41) are multiple, and the guide grooves (41) are arranged on the track pad (4) in parallel.

4. A sleep aid pillow as defined in claim 1, wherein: magnetic pastes are fixed on the inner wall of the guide groove (41) along the length direction, and the magnetic pastes corresponding to the inner wall of the guide groove (41) are fixed on the upper part and the lower part of the shell of the bone conduction earphone (1);

the guide groove (41) is also provided with a filler strip (3).

5. A sleep aid pillow as defined in claim 1, wherein: coil (7) are installed to the shell outside circumference of bone conduction earphone (1), coil (7) rotate right and around there being many circles, and coil (7) link to each other with the power amplifier module of bone conduction earphone (1).

6. A sleep aid pillow as defined in claim 1, wherein: the pillow body (5) and the track pad (4) are also sleeved with a dustproof pad (2), and the dustproof pad (2) is provided with a strip-shaped opening (21) corresponding to the guide groove (41).

7. A sleep aid pillow as defined in claim 1, wherein: an eye cover (13) for shading light is also fixed on the shell of the bone conduction earphone (1).

8. A sleep aid pillow as defined in claim 1, wherein: the inner side of the shell of the bone conduction earphone (1) is also provided with a conduction component;

the conduction assembly comprises a first air bag (8), a second air bag (9) and a third air bag (10), and the first air bag (8), the second air bag (9) and the third air bag (10) are sequentially fixed on the inner side of the shell along the length direction of the shell of the bone conduction earphone (1).

9. A sleep aid pillow as defined in claim 8, wherein: first gasbag (8) encircle first contact (11) and set up, third gasbag (10) encircle second contact (12) and set up, first contact (11) and second contact (12) are all not higher than the arch of gasbag other positions under the recovery state, supporting component is installed with the position that first contact (11) correspond to the shell inboard of first gasbag (8) department, supporting component is installed with the position that second contact (12) correspond to the shell inboard of third gasbag (10) department.

10. A sleep aid pillow as defined in claim 9, wherein: the support assembly comprises a first annular air bag (17) and a second annular air bag, the first annular air bag (17) is fixed on the inner side of a shell at the position of the first air bag (8), the second annular air bag is fixed on the inner side of a shell at the position of the third air bag (10), the first annular air bag (17) is arranged corresponding to a first contact (11), the second annular air bag is arranged corresponding to a second contact (12), a first elastic part (16) is arranged at the central position of the first annular air bag (17), one end of the first elastic part (16) is fixedly connected with the shell of the bone conduction earphone (1), the other end of the first elastic part is fixedly connected with the first contact (11), a second elastic part is arranged at the central position of the second annular air bag (17), one end of the second elastic part is fixedly connected with the shell of the bone conduction earphone (1), the other end of the second elastic part is fixedly connected with the second contact (12), and the first air bag (8) is, the third air bag (10) is communicated with the first annular air bag (17) through a pipeline, and the second air bag (9) is respectively communicated with the first annular air bag (17) and the second annular air bag through pipelines.