Intake valve and buffer airbag device with intake valve

Abstract

An air intake valve (10) is installed on a buffer airbag device (200). The air intake valve (10) sequentially forms an air intake hole (134), a vent hole (133), and an air outlet hole (112). One side of the air intake hole (134) is connected to the vent hole (133) in communication, and the other side is connected to the outside. The air outlet hole (112) is connected to the buffer airbag device (200), the air intake hole (134), and the vent hole (133). The air intake valve (10) includes a ball (12), which is movably housed in the vent hole (133). When the buffer airbag device (200) When the airbag device (200) is pressed and in a compressed state, under the action of air pressure, the ball (12) moves from the vent (133) toward the air inlet (134) and blocks the air inlet (134), so that the air inlet (134) is in a closed state; when the airbag device (200) is released and changes from a compressed state to a released state, under the action of the pressure difference between the outside and the inside of the airbag device (200), the ball (12) moves from the vent (133) toward the air outlet (112) and opens the air inlet (134), so that the air inlet (134) changes from a closed state to a ventilated state. An airbag device (200) is also provided.

Description

[0001] This application claims priority to Chinese Patent Application No. 202111331587.0, filed on November 11, 2021, entitled "A Cushioning Airbag" (invention) and Application No. 202122753793.2, entitled "A Cushioning Airbag" (utility model), the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention belongs to the field of household appliances, and specifically relates to an inflatable cushioning airbag device. Background Technology

[0003] In daily life, we often use shoulder bags, waist bags, armbands, and other types of bags for home, automotive, medical, and sports purposes. Traditional bags often focus only on their functionality, with design and purchase often prioritizing the number of pockets, capacity, or aesthetics, while neglecting user comfort. During backpack use, weight is typically concentrated on the shoulders, waist, neck, or arms. However, during movement, slight vibrations occur, and the backpack straps create impact and friction on the contact points. Especially during strenuous exercise, this impact and friction can have significant negative effects. When carrying a large amount of items or using the backpack for extended periods, prolonged pressure can impede blood circulation, causing pain. Furthermore, the lack of ventilation in these areas leads to sweat buildup and poor heat dissipation, causing considerable discomfort, affecting skin health, and potentially leading to health problems. Therefore, cushioned air linings are highly sought after. This airbag cushion has multiple interconnected airbags and air inlets, through which external gas enters the airbags.

[0004] However, the aforementioned airbag cushion has a defect: after the gas is introduced into the airbag, some of the gas slowly leaks out through the air inlet. As a result, the entire airbag cushion exhibits a slow leakage phenomenon, causing the user to experience insufficient gas in the airbag after using the cushion for a period of time, requiring re-inflation, which makes it inconvenient to use. Summary of the Invention

[0005] To address the above problems, the present invention provides a buffer airbag device to prevent air leakage.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows:

[0007] An air intake valve is installed on a cushioning airbag device. The air intake valve sequentially forms an air intake hole, a vent hole, and an air outlet hole. One side of the air intake hole is connected to the vent hole in communication, and the other side is connected to the outside. The air outlet hole is connected to the cushioning airbag device, the air intake hole, and the vent hole. The air intake valve includes a ball bearing movably housed within the vent hole. When the cushioning airbag device is pressed and in a compressed state, under the action of air pressure, the ball bearing moves from the vent hole toward the air intake hole. The air inlet is blocked, thus preventing gas leakage from the air inlet of the airbag device. When the airbag device is released and changes from a compressed state to a released state, under the pressure difference between the outside and the inside of the airbag device, the ball moves from the vent hole toward the air outlet hole and opens the air inlet hole, so that the air inlet hole changes from a closed state to a ventilated state, thereby allowing external gas to enter the airbag device through the air inlet hole, the vent hole, and the air outlet hole.

[0008] Furthermore, the diameter of the vent hole, which is farther from the air inlet, is larger than the diameter of the ball bearing, while the diameter of the air inlet is smaller than the diameter of the ball bearing, so that the ball bearing can block the air inlet, thereby preventing gas from leaking out of the buffer airbag device through the air inlet.

[0009] Furthermore, the length of the vent hole is greater than the diameter of the ball bearing, thereby preventing the ball bearing from blocking the vent hole, and the width of the vent hole is less than the diameter of the ball bearing, thereby preventing the ball bearing from falling out of the vent hole.

[0010] A cushioning airbag device includes an intake airbag and multiple airbags. One side of the intake airbag is connected to the multiple airbags, and the other side of the intake airbag has an air inlet. The cushioning airbag device also includes an intake valve installed at the air inlet. The intake valve sequentially forms an intake hole, a vent hole, and an outlet hole. One side of the intake hole is connected to the vent hole in communication, and the other side is connected to the outside. The outlet hole is located near the intake airbag and is connected to the intake airbag, the intake hole, and the vent hole. The intake valve includes a ball bearing that is movably housed within the airbag. Inside the vent, when the air intake bladder is compressed, under the action of air pressure, the ball bearing moves from the vent toward the air intake bladder and blocks the air intake bladder, thus keeping the air intake bladder closed and preventing gas from leaking out of the air intake bladder. When the air intake bladder is released and changes from a compressed state to a released state, under the action of pressure difference, the ball bearing moves from the vent toward the air outlet bladder and opens the air intake bladder, thus changing the air intake bladder from a closed state to a ventilated state, allowing external gas to enter the air intake bladder through the air intake bladder, the vent, and the air outlet.

[0011] Furthermore, the diameter of the vent hole, which is farther from the air inlet, is larger than the diameter of the ball bearing, while the diameter of the air inlet is smaller than the diameter of the ball bearing. This allows the ball bearing to block the air inlet, thereby preventing gas from leaking out of the air intake bag through the air inlet.

[0012] Furthermore, the length of the vent hole is greater than the diameter of the ball bearing, thereby preventing the ball bearing from blocking the vent hole, and the width of the vent hole is less than the diameter of the ball bearing, thereby preventing the ball bearing from falling out of the vent hole.

[0013] Furthermore, the air intake valve also includes an air outlet and an air intake. The air outlet is fixedly installed at the air inlet, and the air outlet hole is opened on the air outlet. The air intake is snapped into the air outlet, and the air intake hole and the vent hole are sequentially formed on the air intake. The ball is movably installed between the air outlet and the air intake.

[0014] Furthermore, the air intake component includes an installation part and an air intake part. The installation part is inserted into the air outlet component, and the air intake hole is opened through the installation part. The air intake part protrudes from one side of the installation part and is opened through the air vent.

[0015] Furthermore, the mounting hole has a guide slope, and the side wall of the mounting part is formed with a slope, which slides into the air outlet along the guide slope.

[0016] Furthermore, the air outlet component has a cavity communicating with the mounting hole and the air outlet. The cavity has an inwardly protruding inner edge at the connection between the mounting hole and the air inlet. At the connection between the air inlet and the mounting part, the mounting part has a locking protrusion. In the cavity, the locking protrusion engages with the inner edge, thereby preventing the mounting part of the air inlet component from detaching from the cavity of the air outlet component through the mounting hole.

[0017] Compared with the prior art, the buffer airbag assembly designed in this invention prevents slow gas leakage by using a simple one-way air intake component, thereby effectively preventing air leakage of the buffer airbag device and eliminating the need for frequent inflation, making it convenient to use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the cushioning airbag device according to the first embodiment of the present invention.

[0019] Figure 2 This is a perspective view of the cushioning airbag device according to the first embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the one-way air intake component of the buffer airbag device according to the first embodiment of the present invention.

[0021] Figure 4 This is an exploded view of the air intake valve of the buffer airbag device according to the first embodiment of the present invention.

[0022] Figure 5 This is an exploded cross-sectional view of the air intake valve of the buffer airbag device according to the first embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the air outlet surface of the air inlet valve of the airbag device according to the first embodiment of the present invention.

[0024] Figure 7 This is a schematic cross-sectional view of the air intake valve of the buffer airbag device according to the second embodiment of the present invention. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0026] Figure 1 , Figure 2 The first embodiment of the present invention is a buffer airbag device 200, which includes a body 201 and a buffer airbag assembly 100 disposed on the body 201.

[0027] The main body 201 includes multiple airbags 205 connected by multiple air passages 203, and one of the multiple airbags 205 is connected to the cushioning airbag assembly 100 through an air passage 203.

[0028] The airbag assembly 100 includes an air intake component 10, which is connected in communication with multiple airbags 205 via multiple air passages 203. The air intake component 10 has a first airbag 2 (intake airbag), a second airbag 4, a first air passage 3, a third airbag 8, and an elastomer 21.

[0029] The first airbag 2 has an air intake function and has an air inlet 1 on one side. The other side of the first airbag 2 is connected to the second airbag 4 through the first air passage 3, so that gas enters the second airbag 4 from the first airbag 2 through the first air passage 3.

[0030] The second airbag 4 is connected to multiple airbags 205 via multiple air passages 203. The first airbag 2 and the second airbag 4 are connected in series, so that the gas flows in one direction to achieve a cushioning effect.

[0031] The third airbag 8 is connected to an airbag 205 of the main body 201 via an air passage 203, and the third airbag 8 has an air outlet 5 for expelling gas from the seat cushion 200. In this embodiment, the third airbag 8 is the terminal airbag and is adjacent to and connected to the first airbag 2, so that the multiple airbag structures of the overall seat cushion 200 are compactly arranged to achieve a cushioning effect. It can be understood that the position of the third airbag 8 can be set according to actual needs.

[0032] An elastomer 21 is disposed within the first airbag 2, capable of supporting the first airbag 2 to pop up, allowing gas to fill the first airbag 2, thus enabling the first airbag 2 to be inflated and deflated. It can be understood that the elastomer can be any type of sponge, plastic, spring, rubber, or silicone, as long as it is an elastic component.

[0033] Normally, the elastomer 21 is only placed in the first airbag 2, but the second airbag 4 can also be equipped with the elastomer 41 according to actual needs.

[0034] No tools are required for use; simply squeeze or press the first airbag 2. When the first airbag 2 is squeezed or pressed, the elastic body 21 inside the first airbag 2 is compressed. After releasing the squeeze or press, the first airbag 2 is released, and under the elastic restoring action of the elastic body 21, the first airbag 2 is supported and reset. At this time, under the action of pressure difference, gas is drawn into the first airbag 2 through the air inlet 1 and enters the second airbag 4 and multiple airbags 205 through the first air passage 3, thereby filling the entire buffer airbag device 200 with gas. Thus, when encountering pressure, the buffer airbag device 200 can be compressed, thereby achieving a buffering effect.

[0035] Further reference Figure 3 The airbag assembly 100 may further include a one-way air intake 6, which is disposed within the first airbag 2, the second airbag 4, and the first air passage 3, allowing gas from the first airbag 2 to enter the second airbag 4 in one direction. The one-way air intake 6 includes an upper piece 61 and a lower piece 62. The side edges 611 of the upper piece 61 and 621 of the lower piece 62 are bonded together by a high-frequency voltage, resulting in a structure where the upper piece 61 and lower piece 62 are open at both ends and closed on both sides, with both ends connected to the middle portion. One end of the one-way air intake 6, the first end, is bonded to the inner wall of the first airbag 2 and the first air passage 3 by a high-frequency voltage, ensuring that the first end of the one-way air intake 6 is always open. The other end of the one-way air intake 6, the second end, and the middle portion of the one-way air intake 6 are located within the second airbag 4. In this first embodiment, since both the upper piece 61 and the lower piece 62 are plastic sheets and are flat overall, the upper piece 61 and the lower piece 62 at the middle part and the second end of the one-way air intake 6 can have an adsorption effect when they come into contact with each other, thus playing a role in sealing the air passage.

[0036] When the seat cushion airbag device 200 is used, squeezing or pressing the first airbag 2 will compress the elastic body 21 inside the first airbag 2. The gas inside the first airbag 2 enters the middle part of the one-way air intake 6 through the first end of the one-way air intake 6 in the open state. At this time, the upper piece 61 and the lower piece 62 of the middle part of the one-way air intake 6, which are in contact with each other, are opened by the pressure of the gas to open the channel. At the same time, the second end of the one-way air intake 6 is also opened by the pressure of the gas, so that the gas enters the second airbag 4 from the channel and the second end of the one-way air intake 6, and then enters the multiple airbags 205 through multiple air passages 203, thereby filling the entire seat cushion 200 with gas. When the squeezing or pressing is released, the first airbag 2 is released. Under the elastic reset action of the elastic body 21, the first airbag 2 bounces back to its original position. At this time, the middle part and the second end of the one-way air intake 6 are in contact with each other, that is, the air passage is closed. The second end of the one-way air intake 6 is also in a closed state, thereby preventing the gas from the second airbag 4 from flowing back into the first airbag 2, thus realizing one-way air intake and effectively preventing air leakage.

[0037] Further reference Figures 4-6 The airbag assembly 100 may further include an air intake valve 10, which is installed at the air intake port 1. In this embodiment, the air intake valve 10 is a one-way air intake valve, which allows gas to enter through the air intake port 1 but not exit through it.

[0038] The intake valve 10 includes an outlet component 11, a ball bearing 12, and an intake component 13. The outlet component 11 is installed at the intake port 1 and communicates with the first airbag 2. The intake component 13 is inserted into the outlet component 11 and communicates with the outlet component 11. The ball bearing 12 is movably installed between the outlet component 11 and the intake component 13, and unidirectional air intake is achieved by the movement of the ball bearing 12.

[0039] The air outlet component 11 includes an air inlet surface 117 and an air outlet surface 119 disposed opposite to each other, and a side surface 118 located on the air inlet surface 117 and the air outlet surface 119.

[0040] An installation hole 114 is provided from the air inlet surface 117 toward the air outlet surface 119. An air outlet 112 is provided from the air outlet surface 119 toward the air inlet surface 117. The air outlet component 11 has a cavity 111 inside, and the installation hole 114, the cavity 111, and the air outlet 112 are sequentially provided, and the installation hole 114, the cavity 111, and the air outlet 112 are connected and arranged in a continuous manner.

[0041] The mounting hole 114 is conical, and its diameter decreases as it approaches the cavity 111. Specifically, the diameter of the mounting hole 114 near the air inlet surface 117 is larger than the diameter near the cavity 111. Specifically, it is recessed from the air inlet surface 117 towards the air outlet surface 119. The mounting hole 114 has a guide slope 1141, which slopes from the air inlet surface 117 towards the air outlet surface 119 to guide a portion of the air inlet component 13 into the cavity 111 of the air outlet component 11. Inside the cavity 111, because the diameter of the mounting hole 114 near the air outlet 112 is smaller than the diameter of the cavity 111, an inwardly protruding inner edge 113 is present at the connection between the cavity 111 and the mounting hole 114. This inner edge 113 is used to engage the air inlet component 13.

[0042] The vent 112 has an elongated opening. The length of the vent 112 is greater than the diameter of the ball bearing 12, while the width of the vent 112 is less than the diameter of the ball bearing 12. Therefore, the ball bearing 12 will not fall out of the vent 112, nor will it completely block the vent 112, thus the ball bearing 12 does not obstruct the vent 112's air release function. In this embodiment, the vent 112 is a straight hole. It can be understood that the shape of the vent 112 can also be elliptical, rectangular, etc., as long as the ball bearing 12 does not completely block the vent 112.

[0043] The air intake component 13 includes a mounting portion 131 and an air intake portion 132. The mounting portion 131 is conical and snaps into the cavity 111. The mounting portion 131 has a funnel-shaped vent hole 133. The vent hole 133 is recessed from the side of the mounting portion 131 away from the air intake portion 132 and is used to receive the ball bearing 12. The shape of the mounting portion 131 matches the shape of the mounting hole 114. The sidewall of the mounting portion 131 is formed with a slope 1311, which gradually slopes from the side of the mounting portion 131 away from the air intake portion 132 toward the air intake portion 132, and the diameter of the mounting portion 131 becomes larger as it gets closer to the air intake portion 132. The slope 1311 slides into the cavity 111 along the guide slope 1141, thereby facilitating the installation of the mounting portion 131 of the air intake component 13 into the cavity 111. When the mounting part 131 is housed in the cavity 111, the ball bearing 12 is located between the vent hole 133 of the mounting part 131 and the vent surface 119 of the vent member 11, allowing the ball bearing 12 to roll movably within the vent hole 133 without detaching from it. The ball bearing 12 is spherical. It can be understood that the shape of the ball bearing 12 can be designed according to actual needs.

[0044] The diameter of the conical vent 133 gradually decreases from the side of the vent 133 away from the air intake 132 toward the air intake 132. The diameter of the vent 133 on the side away from the air intake 132 is larger than the diameter of the ball bearing 12, while the diameter of the vent 133 closer to the air intake 132 is smaller than the diameter of the ball bearing 12. When the ball bearing 12 rolls to the middle position of the vent 133, the inner wall of the vent 133 contacts and cannot move forward. At this time, the ball bearing 12 completely blocks the air intake 132 to prevent the gas in the first airbag 2 from flowing out of the air intake valve 10.

[0045] The air intake 132 is cylindrical and protrudes from one side of the mounting portion 131. An air intake hole 134 is provided through the air intake 132, and an air vent 133 is sequentially arranged and connected to it for air intake. The air intake hole 134 is circular. The diameter of the air intake 132 is smaller than the diameter of the mounting portion 131; therefore, at the connection between the air intake 132 and the mounting portion 131, a locking protrusion 1313 protrudes from the mounting portion 131. When the mounting portion 131 is installed inside the cavity 111, the locking protrusion 1313 engages with the inner edge 113, preventing the mounting portion 131 of the air intake member 13 from detaching from the cavity 111 of the air outlet member 11. The diameter of the air inlet 134 is smaller than the diameter of the ball bearing 12, so that the ball bearing 12 can block the air inlet 134 to prevent the gas in the first airbag 2 from flowing back to the outside.

[0046] When the first airbag 2 of the buffer airbag device 200 is pressed and is in a compressed state, under the action of air pressure, the ball bearing 12 moves along the inclined inner wall of the vent 133 toward the air inlet 134, and the ball bearing 12 contacts the inner wall at the middle of the vent 133, thereby blocking and sealing the air inlet 134, so that the air inlet 134 is in a closed state, thereby preventing the gas in the first airbag 2 of the buffer airbag device 200 from leaking out of the air inlet 134, and achieving the effect of one-way air intake.

[0047] When the first airbag 2 of the buffer airbag device 200 is released and changes from a compressed state to a released state, under the action of the pressure difference between the outside and the inside of the first airbag 2 of the buffer airbag device 200, the ball 12 slides along the inclined inner wall of the vent 133 toward the vent 112 of the air outlet 11, so that the air inlet 134 changes from a closed state to a ventilated state, and gas enters the first airbag 2 through the vent 133 and the vent 112, so that the first airbag 2 is filled with gas.

[0048] It is understood that the structure of the intake valve 10 is not limited to a structure including the exhaust element 11 and the intake element 13, as shown in the reference. Figure 7The second embodiment of the present invention provides an intake valve 10. The intake valve 10 of the second embodiment has a structure largely the same as that of the intake valve 10 of the first embodiment, except that the intake valve 10 of the second embodiment includes a housing 14 and a cover 16 sealed and fixed to one side of the housing 14. An intake hole 134 and a vent hole 133 are sequentially formed inside the housing 14, and an outlet hole 112 is provided through the cover 16. Therefore, compared to the intake valve 10 of the first embodiment, the intake valve 10 of the second embodiment can omit the cavity 111.

[0049] Compared with the prior art, the buffer airbag assembly designed in this invention prevents slow gas leakage by using a compact air inlet valve, thereby effectively preventing air leakage of the buffer airbag device and eliminating the need for frequent inflation, making it convenient to use.

[0050] Cushioning airbags can be manufactured using flat lamination. The materials used for single-sided and double-sided convex airbags are primarily TPU, elastic fabric, TPR adhesive, hot melt adhesive, or PVC. For example, TPU can be coated with TPR adhesive and bonded to elastic fabric as the upper padding material. Another method involves coating TPU with TPR adhesive, bonding it to elastic fabric, applying another layer of TPR adhesive, and then bonding a final layer of TPU.

[0051] For the underlayment, if airbags are not needed, use TPU or TPU with TPR adhesive to bond non-elastic materials or fabrics.

[0052] The advantage of using TPU and fabric is their elasticity. A massage cushion, inflated to saturation by an air pump, won't continuously increase in size or height; the fabric will hold it in place. If it only uses TPU without fabric, the air cushion will expand excessively, eventually becoming fatigued or even bursting.

[0053] In summary, this invention can be used on all types of cushioning airbag pads, such as shoulder strap pads, home cushions, lumbar pads, mattresses, medical mattresses, car seat belts, shoe insoles, motorcycle mats, bicycle mats, mouse pads, hemorrhoid pads, knee pads, helmet pads, bulletproof vest pads, etc.

[0054] In summary, this invention provides cushioning for stressed parts by using an air intake on one side and an air outlet on the other, which conforms to the principle of stress. It can generate a cushioning effect through other flows, thus reducing people's stress and providing a new cushioning method.

[0055] Furthermore, combined with the design of a one-way intake valve, it can effectively control the airflow direction, facilitating the achievement of a buffering effect.

[0056] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An intake valve, installed on a buffer airbag device, characterized in that: The intake valve housing has an intake port, a vent port, and an outlet port formed sequentially. One side of the intake port is connected to the vent port in communication, and the other side is connected to the outside. The air outlet is connected to the buffer airbag device, the air inlet, and the vent. The intake valve includes a ball bearing that is movably housed within the vent hole. When the airbag device is pressed and is in a compressed state, under the action of air pressure, the ball moves from the vent toward the air inlet and blocks the air inlet, so that the air inlet is in a closed state, thereby preventing the gas in the airbag device from leaking out of the air inlet. When the airbag device is released and changes from a compressed state to a released state, under the pressure difference between the outside and the inside of the airbag device, the ball moves from the vent hole toward the outlet hole and opens the inlet hole, causing the inlet hole to change from a closed state to a ventilated state. This allows external gas to enter the airbag device through the inlet hole, the vent hole, and the outlet hole. The housing of the intake valve also includes an outlet component and an intake component. The air intake component includes a mounting section and an air intake section. The mounting part is inserted into the air outlet, and the vent hole is formed through the mounting part. The air intake protrudes from one side of the mounting portion and has a through-hole. The air outlet component has a cavity that communicates with the air outlet hole. The ball bearing is housed in the mounting portion of the air inlet component, which itself is housed within the cavity of the air outlet component. The ball bearing is able to roll movably within the vent hole but cannot detach from the vent hole. At the connection between the air intake and the mounting portion, the mounting portion has an outwardly protruding engaging protrusion. The inner wall of the air outlet protrudes inward on the side facing the cavity to form an inner edge for engaging with the air inlet. The mounting part is locked into the cavity of the air outlet component by engaging with the inner edge of the engagement protrusion, and cannot be detached.

2. The intake valve as described in claim 1, characterized in that: The diameter of the vent hole on the side furthest from the air inlet is larger than the diameter of the ball bearing, while the diameter of the air inlet is smaller than the diameter of the ball bearing, so that the ball bearing can block the air inlet, thereby preventing gas from leaking out of the airbag device through the air inlet.

3. The intake valve as described in claim 1, characterized in that: The length of the vent hole is greater than the diameter of the ball bearing, thereby preventing the ball bearing from blocking the vent hole. The width of the vent hole is smaller than the diameter of the ball, thereby preventing the ball from falling out of the vent hole.

4. A buffer airbag device, comprising an air intake airbag and a plurality of airbags, wherein one side of the air intake airbag is connected to the plurality of airbags, and the other side of the air intake airbag has an air inlet, characterized in that: The airbag device further includes an air intake valve, which is installed at the air intake. The housing of the intake valve is sequentially formed with an intake port, a vent port, and an outlet port. One side of the intake port is connected to the vent port in communication, and the other side is connected to the outside. The air outlet is located near the air intake bladder and is connected to the air intake bladder, the air intake port, and the vent. The intake valve includes a ball bearing that is movably housed within the vent hole. When the air intake bladder is pressed and is in a compressed state, under the action of air pressure, the ball moves from the vent hole toward the air intake hole and blocks the air intake hole, so that the air intake hole is in a closed state, thereby preventing the gas in the air intake bladder from leaking out of the air intake hole. When the air intake bladder is released and changes from a compressed state to a released state, under the action of the pressure difference, the ball bearings move from the vent hole toward the outlet hole and open the air intake hole, causing the air intake hole to change from a closed state to a ventilated state. This allows external gas to enter the air intake bladder through the air intake hole, the vent hole, and the outlet hole. The housing of the intake valve also includes an outlet component and an intake component. The outlet component is fixedly installed at the intake port, and the outlet hole is formed in the outlet component. The air intake component is inserted into the air outlet component, and the air inlet and the vent are formed in the air intake component. The air intake component includes a mounting section and an air intake section. The mounting part is inserted into the air outlet, and the vent hole is formed through the mounting part. The air intake protrudes from one side of the mounting portion and has a through-hole. The air outlet component has a cavity that communicates with the air outlet hole. The ball bearing is housed in the mounting portion of the air inlet component, which itself is housed within the cavity of the air outlet component. The ball bearing is able to roll movably within the vent hole but cannot detach from the vent hole. At the connection between the air intake and the mounting portion, the mounting portion has an outwardly protruding engaging protrusion. The inner wall of the air outlet protrudes inward on the side facing the cavity to form an inner edge for engaging with the air inlet. The mounting part is locked into the cavity of the air outlet component by engaging with the inner edge of the engagement protrusion, and cannot be detached.

5. The airbag device as described in claim 4, characterized in that: The diameter of the vent hole, which is away from the air inlet, is larger than the diameter of the ball bearing, while the diameter of the air inlet is smaller than the diameter of the ball bearing. This allows the ball bearing to block the air inlet, thereby preventing air leakage from the air intake bladder through the air inlet.

6. The airbag device as described in claim 4, characterized in that: The length of the vent hole is greater than the diameter of the ball bearing, thereby preventing the ball bearing from blocking the vent hole. The width of the vent hole is smaller than the diameter of the ball, thereby preventing the ball from falling out of the vent hole.

7. The airbag device as described in claim 4, characterized in that: The air outlet component is provided with a mounting hole and an air outlet in sequence. The mounting hole has a guide slope, and the side wall of the mounting part is formed with a slope, which slides into the air outlet along the guide slope.

8. The airbag device as described in claim 7, characterized in that: The mounting hole and the vent hole of the air outlet are connected via the cavity. The inner edge is located at the connection between the cavity and the mounting hole.

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