Air bag control box and air bag mattress

Abstract

The utility model provides a kind of air bag control box and air bag mattress, it is related to air bag mattress technical field, comprising: shell, air pump installation shell, flexible shock-absorbing cover, air pump assembly, solenoid valve group and control circuit board.Outside shell has assembly cavity;Air pump installation shell is suspended in assembly cavity by first elastic damping member;Flexible shock-absorbing cover is suspended in air pump installation shell by second elastic damping member;Air pump assembly is installed in flexible shock-absorbing cover;Solenoid valve group is suspended in assembly cavity by third elastic damping member, and is communicated with air pump assembly by air pipe;Control circuit board is installed in assembly cavity, and respectively with air pump assembly and solenoid valve group electric connection, to control the working of air pump assembly and solenoid valve group.Such, make it can reduce air pump and solenoid valve working noise and reduce the advantage of vibration.

Description

Technical Field

[0001] This utility model relates to the field of airbag mattress technology, and in particular to an airbag control box and an airbag mattress. Background Technology

[0002] With the improvement of modern living standards, airbag mattresses have gained widespread attention because they can automatically adjust support and comfort according to the user's body shape and sleeping habits. Airbag mattresses use an airbag control box to control the inflation and deflation of internal airbags to adjust the mattress firmness, thereby improving sleep quality.

[0003] In existing technologies, airbag control boxes typically include core components such as air pumps, solenoid valves, and control circuit boards. These components are directly fixed inside the control box, and the air pumps and solenoid valves generate significant vibration and noise during operation, which can easily affect the user's sleep experience.

[0004] Therefore, an airbag control box and airbag mattress that can reduce the operating noise of the air pump and solenoid valve and reduce vibration need to be designed. Utility Model Content

[0005] The purpose of this utility model is to address the defects and deficiencies of the existing technology by providing an airbag control box and an airbag mattress, which solves at least one of the above-mentioned technical problems and has the advantages of reducing the operating noise of the air pump and solenoid valve and reducing vibration.

[0006] To achieve the above objectives, this utility model provides an airbag control box, comprising: The outer casing has an internal assembly cavity; The air pump mounting housing is suspended within the assembly cavity via a first elastic shock absorber. The flexible shock-absorbing sleeve is suspended inside the air pump mounting housing by a second elastic shock-absorbing component; The air pump assembly is installed inside the flexible shock-absorbing sleeve; The solenoid valve assembly is suspended in the assembly cavity by a third elastic damping element and is connected to the air pump assembly through an air pipe. A control circuit board is installed inside the assembly cavity and electrically connected to the air pump assembly and the solenoid valve group respectively to control the operation of the air pump assembly and the solenoid valve group.

[0007] Optionally, the four corner areas of the air pump mounting housing are provided with mounting seats, and the bottom plate of the housing is provided with a first snap-fit ​​protrusion corresponding to the mounting seat; the first elastic shock absorber is snapped into the mounting seat and the first snap-fit ​​protrusion at two different positions along its extension direction, so that the air pump mounting housing is suspended in the assembly cavity.

[0008] Optionally, the solenoid valve assembly includes a valve mounting base and a plurality of solenoid valves fixed on the valve mounting base; the valve mounting base is provided with first snap-fit ​​holes at its four corners, and the bottom plate of the outer casing is provided with second snap-fit ​​protrusions corresponding to the first snap-fit ​​holes; the second elastic damping member is snapped into the first snap-fit ​​hole and the second snap-fit ​​protrusion at two different positions along its extension direction, so that the solenoid valve assembly is suspended in the assembly cavity.

[0009] Optionally, the first elastic damping member and the third elastic damping member are first damping nails made of elastic material; The first shock-absorbing nail is connected from top to bottom to the following components: upper nail rod, first annular boss, first limiting rod, second annular boss, second limiting rod, third annular boss, and lower nail rod. The first annular protrusion is connected to one end of the upper nail rod in the shape of a frustum, and the third annular protrusion is connected to one end of the lower nail rod in the shape of an inverted frustum. The diameter of the second annular boss is larger than the diameters of the first annular boss and the third annular boss.

[0010] Optionally, the air pump mounting housing includes a pump base and a top cover that fits over the opening of the pump base; the second elastic damping member is a second damping pin integrally formed on the top of the flexible damping sleeve, and the top cover is provided with a second snap-fit ​​hole corresponding to the second damping pin, and the second damping pin is snapped into the second snap-fit ​​hole so that the flexible damping sleeve is suspended inside the air pump mounting housing.

[0011] Optionally, a shock-absorbing pad is provided between the pump base and the top cover, and the shock-absorbing pad has a through hole corresponding to the second snap-fit ​​hole so that the second shock-absorbing nail can be snapped in place.

[0012] Optionally, the plurality of solenoid valves include an air supply solenoid valve and an exhaust solenoid valve connected in series. The air supply solenoid valve is connected to the airbag of the airbag mattress through an air pipe, and the exhaust port of the exhaust solenoid valve is connected to a muffler.

[0013] Optionally, the solenoid valve assembly further includes a valve cover covering the solenoid valve, the valve cover being made of shock-absorbing silicone.

[0014] Optionally, the outer casing includes a bottom shell and a top cover that fits over the bottom shell; the bottom of the bottom shell is provided with shock-absorbing support feet, and the outer casing is mounted on the control box mounting position of the airbag mattress via the shock-absorbing support feet.

[0015] Another aspect of this utility model provides an airbag mattress, comprising: a support frame having a first accommodating area and a second accommodating area, a plurality of airbags disposed in the first accommodating area and an airbag control box disposed in the second accommodating area as described above, wherein the solenoid valve group of the airbag control box is connected to the airbags respectively through air tubes to independently control the inflation and deflation of each airbag.

[0016] Compared with the prior art, the advantages of this application are: Because the air pump mounting housing of the airbag control box is suspended within the assembly cavity of the outer shell via a first elastic damping element, and the flexible damping sleeve is suspended within the air pump mounting housing via a second elastic damping element, with the air pump assembly installed within the flexible damping sleeve, a multi-stage damping structure is formed. Simultaneously, the solenoid valve assembly is independently suspended within the assembly cavity via a third elastic damping element. This effectively isolates the vibrations of the air pump and solenoid valve, preventing vibration transmission to the outer shell, thereby significantly reducing the noise generated by the air pump operation and solenoid valve actuation, and improving the vibration damping and noise reduction performance of the airbag control box. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the airbag control box according to an embodiment of the present invention; Figure 2 This is a partially exploded structural diagram of the airbag control box according to an embodiment of the present invention; Figure 3 This is an exploded view of another part of the structure of the airbag control box in an embodiment of this utility model; Figure 4 This is a partial exploded view of the air pump mounting housing, flexible shock-absorbing sleeve, air pump assembly, and first shock-absorbing nail in an embodiment of the present utility model. Figure 5 A partial exploded view of the electromagnetic valve assembly and the first shock-absorbing nail in this embodiment of the present invention; Figure 6 This is a front view structural diagram of the first shock-absorbing nail in an embodiment of this utility model.

[0019] Explanation of reference numerals in the attached figures 100-Airbag Control Box; 1-Outer shell; a-Assembly cavity; 11-Outer bottom shell; 111-First snap-fit ​​boss; 112-Second snap-fit ​​boss; 12-Top cover; 13-Shock-absorbing support foot; 2-Air pump mounting housing; 21-Pump base; 22-Top cover; 23-Mounting base; 24-Shock damping pad; 3-Flexible shock-absorbing sleeve; 4-Air pump assembly; 41-Air pump; 5-Solenoid valve assembly; 51-Valve mounting base; o-First snap-fit ​​hole; 52-Solenoid valve; 521-Gas supply solenoid valve; 522-Exhaust solenoid valve; 53-Silencer; 54-Valve cover; 6-Control circuit board; 7-First shock absorber nail; 71-Upper nail rod; 72-First annular boss; 73-First limiting rod; 74-Second annular boss; 75-Second limiting rod; 76-Third annular boss; 77-Lower nail rod; 8. Second shock absorber nail. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "back," "side," and "circumferential" used in this utility model to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used to distinguish multiple parts or structures with the same or similar structures, and do not indicate any special limitation on the arrangement order or connection relationship.

[0022] Please refer to Figures 1 to 6 This utility model embodiment provides an airbag control box 100, which is assembled inside an airbag mattress (not shown in the figure) for inflating and deflating the airbags (not shown in the figure) inside the airbag mattress. It includes: an outer shell 1, an air pump mounting shell 2, a flexible shock-absorbing sleeve 3, an air pump assembly 4, a solenoid valve assembly 5, and a control circuit board 6.

[0023] The outer shell 1 has an assembly cavity a inside. Specifically, the outer shell 1 includes an outer bottom shell 11 and a top cover 12 that covers the outer bottom shell 11. The outer bottom shell 11 and the top cover 12 cover and enclose the interior to form the assembly cavity a.

[0024] The air pump mounting housing 2 is suspended within the assembly cavity a by a first elastic shock absorber, avoiding direct contact with the inner wall of the housing 1. The first elastic shock absorber can absorb the vibration and impact generated by the air pump mounting housing 2 during the operation of the air pump assembly 4, reduce noise, and prevent vibration from being transmitted to the airbag mattress through the housing 1, thereby reducing interference to the user.

[0025] The flexible damping sleeve 3 is suspended inside the air pump mounting housing 2 by a second elastic damping element, and the air pump assembly 4 is installed inside the flexible damping sleeve 3. The flexible damping sleeve 3 can directly buffer the vibration generated by the air pump assembly 4 during operation, while the second elastic damping element prevents the flexible damping sleeve 3 from making rigid contact with the air pump mounting housing 2 and further absorbs vibration and impact, achieving dual isolation of noise and vibration. Specifically, in this embodiment, the air pump assembly 4 includes three air pumps 41 arranged in parallel. Of course, in other embodiments, the air pumps 41 and their specifications can be set according to actual needs, and no specific limitations are made here.

[0026] The solenoid valve assembly 5 is suspended within the assembly cavity a via a third elastic damping element, preventing direct contact with the inner wall of the outer casing 1. The third elastic damping element absorbs the vibration and noise generated by the solenoid valve assembly 5 during inflation and deflation. The air inlet of the solenoid valve assembly 5 is connected to the air pump assembly 4 via an air pipe, and the air supply end is connected to the airbag inside the airbag mattress, enabling control of gas flow and interruption.

[0027] The control circuit board 6 is installed in the assembly cavity a and is electrically connected to the air pump assembly 4 and the solenoid valve group 5, respectively, for controlling the operation of the air pump assembly 4 and the solenoid valve group 5. This includes starting and stopping the air pump assembly 4, adjusting the flow rate, and switching the solenoid valve group 5, thereby achieving precise control of the inflation and deflation of the airbag. Specifically, the structure of the control circuit board 6 and the algorithm for controlling the air pump assembly 4 and the solenoid valve group 5 are existing technologies, and therefore will not be elaborated on here.

[0028] Optionally, the first, second, and third elastic damping components can be made of flexible elements such as springs, rubber, or silicone to achieve the effects of vibration reduction and noise reduction.

[0029] The airbag control box 100 technical solution forms a multi-stage shock absorption structure: the air pump assembly 4 is isolated by a flexible shock-absorbing sleeve 3 and a second elastic shock-absorbing component, and the flexible shock-absorbing sleeve 3 is suspended inside the outer shell 1 by a first elastic shock-absorbing component; the solenoid valve assembly 5 is also independently suspended by a third elastic shock-absorbing component. This multi-stage elastic suspension and flexible covering design can significantly isolate the mechanical vibration and noise generated by the air pump 41 and solenoid valve 52 during operation, effectively improving user comfort.

[0030] Alternatively, please refer to Figure 2 and Figure 4In this embodiment, mounting bases 23 are provided at the four corners of the air pump mounting housing 2. A first snap-fit ​​protrusion 111 is provided on the bottom plate of the housing 1 corresponding to the mounting base 23. A first elastic damping member is snapped into the mounting base 23 and the first snap-fit ​​protrusion 111 at two different positions along its extension direction, suspending the air pump mounting housing 2 within the assembly cavity a. That is, the first elastic damping member is snapped into the mounting base 23 and the first snap-fit ​​protrusion 111 at two spaced intervals, thereby suspending the air pump mounting housing 2 on the bottom plate of the housing 1, forming a stable and reliable damping connection; simultaneously, the snap-fit ​​connection method also makes installation and disassembly more convenient. It can be understood that both the mounting base 23 and the first snap-fit ​​protrusion 111 are provided with through holes through which the first elastic damping member passes and snaps in.

[0031] Alternatively, please refer to Figure 2 , Figure 3 and Figure 5 In this embodiment, the solenoid valve assembly 5 includes a valve fixing base 51 and multiple solenoid valves 52. The multiple solenoid valves 52 are fixed to the valve fixing base 51. The valve fixing base 51 has first snap-fit ​​holes o at its four corners, and the bottom plate of the outer casing 1 has second snap-fit ​​protrusions 112 corresponding to the first snap-fit ​​holes o. A second elastic damping member, along its extension direction, snaps into the first snap-fit ​​hole o and the second snap-fit ​​protrusion 112 at two different positions, suspending the solenoid valve assembly 5 within the assembly cavity a. That is, the second elastic damping member snaps into the valve fixing base 51 and the second snap-fit ​​protrusion 112 at two spaced intervals, thereby suspending the solenoid valve assembly 5 on the bottom plate of the outer casing 1, forming a stable and reliable damping connection; simultaneously, the snap-fit ​​connection method also makes installation and disassembly more convenient. It can be understood that each of the second snap-fit ​​protrusions 112 has a through hole through which the second elastic damping member passes and snaps.

[0032] Specifically, please refer to Figure 6 In this embodiment, the first and third elastic damping components are first damping nails 7 made of elastic material. The elastic material is preferably made of rubber, silicone, thermoplastic elastomers (TPE / TPR), polyurethane (PU), or other elastic materials to ensure good cushioning and damping performance. Of course, in other embodiments, the first and third elastic damping components may have different structures, and no specific limitations are made here.

[0033] The first damping pin 7 is connected from top to bottom to the following components: upper pin 71, first annular boss 72, first limiting rod 73, second annular boss 74, second limiting rod 75, third annular boss 76, and lower pin 77. The ends of the upper pin 71 and lower pin 77 are pointed structures with smaller diameters to facilitate insertion into the through holes or locking holes of the components being engaged. The end of the first annular boss 72 connected to the upper pin 71 is frustum-shaped, and the second annular boss 74 has a rounded transition structure with a centrally tapering outer periphery in its axial extension direction. That is, the outer diameter of its upper and lower surfaces is larger than the central outer diameter, and the central outer diameter gradually decreases from both ends to the center along the axial direction, forming a waist-shaped profile with a rounded outer periphery. The third annular boss 76 connects to one end of the lower nail rod 77 in the shape of an inverted frustum. The diameter of the second annular boss 74 is larger than the diameters of the first annular boss 72 and the third annular boss 76. It is used to axially limit and support the connected parts in the snap-fit ​​state.

[0034] During assembly, the upper end of the first damping pin 7 passes through the first snap-fit ​​hole o on the mounting base 23 of the air pump mounting housing 2 or the valve fixing base 51 of the solenoid valve assembly 5, and snaps the mounting base 23 or the valve fixing base 51 between the first annular boss 72 and the second annular boss 74 to achieve upper-end limiting fixation; the lower end of the first damping pin 7 passes through the first snap-fit ​​boss 111 or the second snap-fit ​​boss 112 on the bottom plate of the housing 1, and snaps the bottom plate of the housing 1 between the second annular boss 74 and the third annular boss 76 to achieve lower-end limiting fixation. In practical applications, after the two ends of the first damping pin 7 are snapped and fixed, to avoid interference, part of the upper pin rod 71 or the lower pin rod 77 can be removed.

[0035] In this way, the first shock-absorbing nail 7 can simultaneously complete the elastic snap-fit ​​connection between the upper component and the bottom plate of the outer shell 1, thereby allowing the air pump mounting shell 2 and the solenoid valve group 5 to be stably installed in the assembly cavity a in a suspended manner, thus achieving the advantages of shock absorption and noise reduction while also being easy and quick to install and disassemble.

[0036] Alternatively, please refer to Figure 3 and Figure 4 In this embodiment, the air pump mounting housing 2 includes a pump base housing 21 and a top cover 22. The top cover 22 closes to the opening of the pump base housing 21, and the interior of the pump base housing 21 and the top cover 22 together forms an accommodating space for accommodating the flexible shock-absorbing sleeve 3 and the air pump assembly 4. The second elastic shock absorber is a second shock-absorbing pin 8 integrally formed on the top of the flexible shock-absorbing sleeve 3. Optionally, the second elastic shock absorber and the flexible shock absorber are integrally injection molded from silicone material. The top cover 22 is provided with a second snap-fit ​​hole corresponding to the second shock-absorbing pin 8. During assembly, the second shock-absorbing pin 8 passes through and snaps into the second snap-fit ​​hole, so that the flexible shock-absorbing sleeve 3 is suspended inside the air pump mounting housing 2.

[0037] It should be noted that the overall structure of the second shock absorber nail 8 is basically the same as that of the first shock absorber nail 7, but the lower structure is simplified, that is, the second limiting rod 75, the third annular boss 76 and the lower nail rod 77 are omitted, and only the necessary parts for snapping the upper cover 22 are retained to meet the top suspension installation requirements of the flexible shock absorber sleeve 3.

[0038] To further isolate the vibration generated during the operation of the air pump assembly 4, optionally, please refer to Figure 3 In this embodiment, a shock-absorbing pad 24 is provided between the pump bottom shell 21 and the top cover 22, and a through hole is provided on the shock-absorbing pad 24 corresponding to the second snap-fit ​​hole so that the second shock-absorbing nail 8 can be snapped in; thus, the shock absorption effect can be further enhanced.

[0039] To reduce the noise generated by solenoid valve assembly 5 during exhaust, optionally, please refer to... Figure 5 In this embodiment, the multiple solenoid valves 52 include an air supply solenoid valve 521 and an air exhaust solenoid valve 522 connected in series. The air supply solenoid valve 521 is connected to the air bladder of the airbag mattress through an air tube and is used to inflate the air bladder. The exhaust port of the exhaust solenoid valve 522 is connected to a silencer 53 to reduce noise during exhaust, thereby improving the comfort of the airbag mattress.

[0040] Further, please refer to Figure 3 In this embodiment, the solenoid valve assembly 5 also includes a valve cover 54 covering the solenoid valve 52, the valve cover 54 being made of shock-absorbing silicone. The valve cover 54 covers the outer surface of the solenoid valve 52, absorbing and attenuating vibration energy when the solenoid valve assembly 5 is in operation, thereby reducing the vibration transmitted to the outer casing 1.

[0041] Further, please refer to Figure 1 In this embodiment, a shock-absorbing support foot 13 is embedded at the bottom of the outer shell 11, and the outer shell 1 is mounted to the control box mounting position of the airbag mattress via the shock-absorbing support foot 13. Optionally, the shock-absorbing support foot 13 is made of elastic material. In this way, the transmission of vibration can be further reduced, improving the quietness and comfort of the airbag mattress.

[0042] Another aspect of this utility model embodiment provides an airbag mattress (not shown in the figure), comprising: a support frame (not shown in the figure) having a first receiving area and a second receiving area, a plurality of airbags (not shown in the figure) disposed in the first receiving area, and an airbag control box 100 disposed in the second receiving area as described above. The solenoid valve group 5 of the airbag control box 100 is connected to the airbags respectively through air tubes to independently control the inflation and deflation of each airbag. Since this airbag mattress has all the structure and connection relationship of the airbag control box 100, it has all the advantages of the airbag control box 100, which will not be elaborated here.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the substance of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An airbag control box, characterized in that, include: The outer casing has an internal assembly cavity; The air pump mounting housing is suspended within the assembly cavity via a first elastic shock absorber. The flexible shock-absorbing sleeve is suspended inside the air pump mounting housing by a second elastic shock-absorbing component; The air pump assembly is installed inside the flexible shock-absorbing sleeve; The solenoid valve assembly is suspended in the assembly cavity by a third elastic damping element and is connected to the air pump assembly through an air pipe. A control circuit board is installed inside the assembly cavity and electrically connected to the air pump assembly and the solenoid valve group respectively to control the operation of the air pump assembly and the solenoid valve group.

2. The airbag control box as described in claim 1, characterized in that, The air pump mounting housing has mounting seats at its four corners, and the bottom plate of the housing has a first snap-fit ​​protrusion corresponding to the mounting seat. The first elastic shock absorber is snapped into the mounting seat and the first snap-fit ​​protrusion at two different positions along its extension direction, so that the air pump mounting housing is suspended in the assembly cavity.

3. The airbag control box as described in claim 2, characterized in that, The solenoid valve assembly includes a valve mounting base and a plurality of solenoid valves fixed on the valve mounting base; the valve mounting base is provided with first snap-fit ​​holes at its four corners, and the bottom plate of the outer shell is provided with second snap-fit ​​protrusions corresponding to the first snap-fit ​​holes; the second elastic damping member is snapped into the first snap-fit ​​hole and the second snap-fit ​​protrusion at two different positions along its extension direction, so that the solenoid valve assembly is suspended in the assembly cavity.

4. The airbag control box as described in claim 3, characterized in that, The first elastic damping member and the third elastic damping member are first damping nails made of elastic material; The first shock-absorbing nail is connected from top to bottom to the following components: upper nail rod, first annular boss, first limiting rod, second annular boss, second limiting rod, third annular boss, and lower nail rod. The first annular protrusion is connected to one end of the upper nail rod in the shape of a frustum, and the third annular protrusion is connected to one end of the lower nail rod in the shape of an inverted frustum. The diameter of the second annular boss is larger than the diameters of the first annular boss and the third annular boss.

5. The airbag control box as described in claim 1, characterized in that, The air pump mounting housing includes a pump base and a top cover that fits over the opening of the pump base; the second elastic damping member is a second damping nail integrally formed on the top of the flexible damping sleeve, and the top cover is provided with a second snap-fit ​​hole corresponding to the second damping nail, and the second damping nail snaps into the second snap-fit ​​hole so that the flexible damping sleeve is suspended inside the air pump mounting housing.

6. The airbag control box as described in claim 5, characterized in that, A shock-absorbing pad is provided between the pump bottom shell and the top cover, and the shock-absorbing pad has a through hole corresponding to the second snap-fit ​​hole so that the second shock-absorbing nail can be snapped in place.

7. The airbag control box as described in claim 3, characterized in that, The plurality of solenoid valves include an air supply solenoid valve and an exhaust solenoid valve connected in series. The air supply solenoid valve is connected to the airbag of the airbag mattress through an air pipe, and the exhaust port of the exhaust solenoid valve is connected to a muffler.

8. The airbag control box as described in claim 7, characterized in that, The solenoid valve assembly also includes a valve cover that covers the solenoid valve, the valve cover being made of shock-absorbing silicone.

9. The airbag control box as described in claim 1, characterized in that, The outer shell includes an outer bottom shell and a top cover that fits onto the outer bottom shell; the bottom of the outer bottom shell is provided with shock-absorbing support feet, and the outer shell is installed on the control box mounting position of the airbag mattress via the shock-absorbing support feet.

10. An airbag mattress, characterized in that, include: A support frame having a first accommodating area and a second accommodating area, a plurality of airbags disposed in the first accommodating area and an airbag control box disposed in the second accommodating area as described in any one of claims 1-9, wherein the solenoid valve group of the airbag control box is connected to the airbags respectively through air tubes to independently control the inflation and deflation of each airbag.

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