Multi-cavity air bag and vehicle seat

Abstract

The utility model provides a multi-cavity air bag (100) and a vehicle seat, the multi-cavity air bag (100) comprises a plurality of air bags (101) and a spacer (140), the air bags (101) are stacked, the multi-cavity air bags (100) can be inflated to expand or deflated to flatten in the stacking direction of the air bags (101), every two adjacent air bags (101) are communicated through an air channel (111), and the spacer (140) is arranged between the air bags (101) and the spacer (140). At least one air bag is provided with an air vent; the air bag (101) is provided with a containing cavity (112), the partition piece (140) is located in the containing cavity of the air bag and detachably connected to the air channel (111) in a clamped mode, one part of the partition piece (140) extends into the containing cavity (112) of one air bag (101), and the other part of the partition piece (140) extends into the containing cavity (112) of the other adjacent air bag (101).

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile seats, in particular to a multi-cavity air bag and a vehicle seat. BACKGROUND

[0002] In the research and design of automobile seats, in order to meet the diversified requirements of passengers and realize the intelligent function of vehicle seats, a gas containing device is usually provided to introduce gas to assist in the detection of the body pressure of passengers or the massage of passengers.

[0003] When the gas containing device is made of soft material, the inner walls of the gas containing device made of soft material are in contact or extrusion with each other in the deflated state of the gas containing device, or even under the condition of bearing a certain load, which is easy to cause adhesion, affecting the realization of various functions of the automobile seat. CONTENT OF THE UTILITY MODEL

[0004] In view of the above defects or deficiencies in the prior art, the present application aims to provide a multi-cavity air bag and a vehicle seat to solve the above problems.

[0005] The first aspect of the present application provides a multi-cavity air bag, which comprises:

[0006] A plurality of air bags are arranged in layers, and the multi-cavity air bag can be inflated or deflated along the stacking direction of the plurality of air bags, two adjacent air bags are connected by an air passage, and at least one air bag is provided with a gas inlet.

[0007] A partition is located in the containing cavity of the air bag and is detachably connected to the air passage, wherein one part of the partition extends into the containing cavity of one air bag, and the other part extends into the containing cavity of the adjacent air bag.

[0008] The multi-cavity air bag provided by the present application can transport gas into the containing cavity of the air bag through the air passage when the containing cavity of the air bag is in a deflated state, and the gas will enter the containing cavity of the air bag along the partition, so that the air bag will gradually fill with gas.

[0009] Even if the air bag bears a certain load and the inner walls of the air bag are in contact, due to the blocking of the partition, the inner walls of each air bag or the adjacent two air bags are not easy to cause adhesion phenomenon, so as to ensure that the multi-cavity air bag can be freely inflated or deflated, assist the vehicle seat to realize various intelligent functions, and meet the diversified needs of passengers.

[0010] In one embodiment of the multi-chamber air bag of this utility model, the partition is elongated, and the length of the partition is greater than the maximum distance between the edge of the air passage and the inner edge of the air bag.

[0011] In one embodiment of the multi-chamber air bag of this utility model, the partition includes a first snap-fit ​​strip, a second snap-fit ​​strip, and a connecting structure. The first snap-fit ​​strip and the second snap-fit ​​strip are connected through the connecting structure. The connecting structure passes through the air passage, and the maximum outer diameter of the connecting structure is smaller than the minimum inner diameter of the air passage. The lengths of the first snap-fit ​​strip and the second snap-fit ​​strip are both greater than the maximum opening size of the air passage.

[0012] The first snap-fit ​​strip and the second snap-fit ​​strip are snapped into the airway, with the first snap-fit ​​strip located in the receiving cavity of one air bag and the second snap-fit ​​strip located in the receiving cavity of the adjacent other air bag.

[0013] In one embodiment of the multi-cavity air bag of this utility model, the partition is provided with at least one protruding end, the protruding end is connected to the first snap-fit ​​strip or the second snap-fit ​​strip, and extends into the receiving cavity of the air bag.

[0014] In one embodiment of the multi-cavity air bag of this utility model, the partition is provided with at least two protruding ends, one of which is connected to the first snap-fit ​​strip and extends into the receiving cavity of the air bag, and the other of which is connected to the second snap-fit ​​strip and extends into the receiving cavity of the other air bag.

[0015] In one embodiment of the multi-chamber air bag of this utility model, two adjacent air bags are provided with a welding protrusion at the connection position. The welding protrusion is located in the receiving cavity of the air bag and close to the air passage.

[0016] In one embodiment of the multi-chamber air bag of this utility model, the multi-chamber air bag includes a plurality of welded protrusions, which are spaced apart around the air passage.

[0017] In one embodiment of the multi-cavity air bag of this utility model, the multi-cavity air bag further includes a venting pipe, one end of which is welded to the air bag and communicates with the receiving cavity of the air bag, wherein the partition is disposed in the receiving cavity of the air bag away from the venting pipe.

[0018] In one embodiment of the multi-cavity air bag of this utility model, the partition is provided in the outermost part of the multi-cavity air bag.

[0019] In one embodiment of the multi-cavity air bag of this utility model, the multi-cavity air bag is configured as a kneading massage air bag, and the kneading massage air bag is made of a flexible material.

[0020] A second aspect of this utility model provides a vehicle seat, the vehicle seat including a multi-chamber airbag as described in any of the preceding claims, the vehicle seat having a seating area and a backrest area, the seating area and / or the backrest area having at least one of the multi-chamber airbags. Attached Figure Description

[0021] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of a multi-cavity air bag according to the present invention, wherein the multi-cavity air bag includes three air bags;

[0023] Figure 2 for Figure 1 Sectional view along axis AA;

[0024] Figure 3 This is a schematic diagram of the first structure of the partition of the multi-cavity air bag of this utility model;

[0025] Figure 4 This is a schematic diagram of the second structure of the partition of the multi-cavity air bag of this utility model;

[0026] Figure 5 This is a schematic diagram of the third structure of the partition of the multi-cavity air bag of this utility model;

[0027] Figure 6 This is a schematic diagram of the fourth structure of the partition of the multi-cavity air bag of this utility model;

[0028] Figure 7 This is a schematic diagram of the fifth structure of the partition of the multi-cavity air bag of this utility model;

[0029] Figure 8 This is a schematic diagram of the sixth structure of the partition of the multi-cavity air bag of this utility model;

[0030] Figure 9 This is a schematic diagram of the seventh structure of the partition of the multi-cavity air bag of this utility model;

[0031] Figure 10 This is a schematic diagram of a multi-chamber air bag according to the present invention. Gas is being pumped into the multi-chamber air bag.

[0032] Figure 11 for Figure 10 A BB-direction cross-sectional view, in which the upper part of the multi-chamber air bag bears a certain load;

[0033] Figure 12This is a schematic diagram of a multi-chamber air bag according to the present invention, wherein gas is gradually injected into three air bags;

[0034] Figure 13 for Figure 12 CC-direction sectional view;

[0035] Figure 14 This is a schematic diagram of a multi-chamber air bag according to the present invention, wherein three air bags are filled with gas;

[0036] Figure 15 for Figure 14 DD section view;

[0037] Figure 16 A schematic diagram of the structure of the multi-cavity air bag of this utility model, in which four air bags are stacked together;

[0038] Figure 17 An exploded view of the structure of the multi-cavity air bag of this utility model;

[0039] Figure 18 Another exploded view of the multi-cavity air bag of this utility model;

[0040] Figure 19 Another exploded axonometric view of the multi-chamber air bag of this utility model;

[0041] Figure 20 Another structural schematic diagram of the multi-cavity air bag of this utility model;

[0042] Figure 21 for Figure 20 EE-directed sectional view.

[0043] Icon labels:

[0044] 100. Multi-chamber air bag; 101. Air bag; 102. Ventilation port; 103. Airway; 104. Receiving cavity;

[0045] 110. First air bag; 111. First membrane; 112. Second membrane; 120. Second air bag; 121. Third membrane; 122. Fourth membrane; 130. Third air bag; 131. Fifth membrane; 132. Sixth membrane;

[0046] 140. Spacer; 141. First snap-fit ​​strip; 142. Second snap-fit ​​strip; 143. Connecting structure; 144. Extended end;

[0047] 150. Welding protrusion; 160. Vent pipe; 170. Fourth air bag. Detailed Implementation

[0048] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The descriptions in this section are merely illustrative and explanatory, and should not be construed as limiting the scope of protection of this application. Specifically, the described embodiments are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort should fall within the scope of protection of this invention.

[0049] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0050] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0051] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0052] Figure 1 This is a schematic diagram of a multi-chamber air bag according to the present invention, wherein the multi-chamber air bag 100 includes three air bags 101. Figure 2 for Figure 1 A sectional view along line AA, such as Figure 1 and Figure 2 As shown, the first aspect of this utility model provides a multi-chamber air bag 100, which includes a first air bag 110, a second air bag 120 and a third air bag 130. The first air bag 110, the second air bag 120 and the third air bag 130 are stacked together, and the multi-chamber air bag 100 can be extended or shortened along the stacking direction. Two adjacent air bags 101 are connected by an air passage 111.

[0053] Ventilation ports 102 are provided in the first air bag 110, the second air bag 120, or the third air bag 130.

[0054] When gas is injected into the multi-chamber airbag 100, the gas enters the receiving cavity 104 of the first airbag 110, the second airbag 120, and the third airbag 130 through the air passage 111. During the gradual inflation of the first airbag 110, the second airbag 120, and the third airbag 130, the entire multi-chamber airbag 100 gradually elongates along the stacking direction. During the gradual deflation of the first airbag 110, the second airbag 120, and the third airbag 130, the multi-chamber airbag 100 gradually shortens along the stacking direction. When the multi-chamber airbag 100 is installed in the vehicle seat, it can assist the vehicle seat in realizing intelligent functions, such as detecting the body pressure of the occupant, massaging the occupant, applying force to the occupant's waist to provide lumbar support, and supporting the occupant's legs to provide leg support.

[0055] The multi-chamber air bag 100 of this utility model also includes a partition 140, which is connected to the air bag 101 at the air passage 111. A portion of the partition 140 extends into the receiving cavity 104 of one of the air bags 101, and another portion extends into the receiving cavity 104 of the adjacent air bag 101.

[0056] The multi-chamber air bag 100 provided by this utility model, when the receiving cavity 104 of the air bag 101 is in a deflated state, when gas is delivered into the receiving cavity 104 of the air bag 101 through the air passage 111, the gas will at least enter the receiving cavity 104 of the air bag 101 along the partition 140, so that the air bag 101 will gradually fill with gas.

[0057] Even when the airbag 101 is in a deflated state, and the airbag 101 bears a certain load, causing the inner walls of the airbag 101 to come into contact, the partition 140 prevents adhesion between the inner walls of each airbag 101 or between two adjacent airbags 101. This ensures that the multi-chamber airbag 100 can be freely inflated or deflated, assisting the vehicle seat in realizing various intelligent functions and meeting the diverse needs of the occupants.

[0058] It should be noted that when adjacent air bags in a multi-cavity airbag stick together, a bursting sound can easily occur in the stuck air bags when gas at a predetermined pressure is delivered into the multi-cavity airbag, affecting the occupants and the surrounding environment. In the multi-cavity airbag of this invention, a partition is provided in the receiving cavity of the airbag. Gas enters the airbag along the partition, and the airbag inflates. The entire inflation process is noiseless. Therefore, the multi-cavity airbag provided by this invention has the advantage of reducing noise.

[0059] In other embodiments of this utility model, the multi-chamber airbag 100 may also be provided with multiple airbags 101, such as adding a fourth airbag 101 and a fifth airbag 101. The number of airbags 101 and the area they occupy on the seat can be arranged according to the actual needs of the seat. For example, when detecting the body pressure of the occupant, the area of ​​the airbags 101 can be appropriately increased. When massaging the occupant, multiple multi-chamber airbags 100 can be set at intervals and distributed in different positions of the vehicle seat, so as to massage different parts of the occupant's body.

[0060] Figure 16 A schematic diagram of the structure of the multi-cavity air bag of this utility model, in which four air bags are stacked, is shown below. Figure 16 As shown, the fourth airbag 170, located on the outermost side of the multi-chamber airbag, is equipped with a partition. In practical applications, the outermost airbag of the multi-chamber airbag is prone to sticking together due to the pressure from the occupants. The partition inside the outermost airbag can reduce noise.

[0061] Figure 3 This is a schematic diagram of the first structural design of the diaphragm of the multi-cavity air bag of this utility model, as shown below. Figure 3 As shown, in one embodiment of this utility model, the partition 140 includes a first snap-fit ​​strip 141, a second snap-fit ​​strip 142, and a connecting structure 143. The first snap-fit ​​strip 141 and the second snap-fit ​​strip 142 are connected by the connecting structure 143. The connecting structure 143 passes through the air passage 111, and the maximum outer diameter of the connecting structure 143 is smaller than the minimum inner diameter of the air passage 111. When the connecting structure 143 is located inside the air passage 111, the gas can still enter the receiving cavity 104 of the air bag 101 through the air passage 111. The connecting structure 143 will not block the entire air passage 111 and affect the gas flow.

[0062] The lengths of the first snap-fit ​​strip 141 and the second snap-fit ​​strip 142 are both greater than the maximum opening size of the air passage 111. The first snap-fit ​​strip 141 and the second snap-fit ​​strip 142 are located on both sides of the air passage 111, and the air passage 111 can prevent the first snap-fit ​​strip 141 or the second snap-fit ​​strip 142 from moving to the other side, thereby ensuring that a part of the partition 140 extends into the receiving cavity 104 of one of the air bags 101, and the other part extends into the receiving cavity 104 of the adjacent air bag 101.

[0063] The first snap-fit ​​strip 141 and the second snap-fit ​​strip 142 are snapped into the air passage 111, with the first snap-fit ​​strip 141 located in the receiving cavity 104 of one air bag 101 and the second snap-fit ​​strip 142 located in the receiving cavity 104 of the adjacent other air bag 101. Thus, the spacer 140 is located in the receiving cavities 104 of the two adjacent air bags 101, preventing the inner walls of each air bag 101 from contacting or pressing against each other and sticking together.

[0064] like Figure 3 As shown, in one embodiment of the present invention, the partition 140 is provided with at least one protruding end 144, the protruding end 144 is connected to the first snap-fit ​​strip 141 or the second snap-fit ​​strip 142, and extends into the receiving cavity 104 of the air bag 101. Gas can gradually enter the receiving cavity 104 of the air bag 101 along the protruding end 144, thereby preventing the receiving cavity 104 of the air bag 101 from suddenly increasing and producing a bursting sound.

[0065] exist Figure 3 In the given schematic diagram of the partition 140 of the multi-cavity air bag 100, protruding ends 144 are respectively provided on both sides of the partition 140, so that they can extend into the receiving cavity 104 of the adjacent air bag 101 respectively.

[0066] Figure 4 This is a schematic diagram of the second structure of the diaphragm of the multi-cavity air bag of this utility model, as shown below. Figure 4 As shown, the first snap-fit ​​strip 141 and the second snap-fit ​​strip 142 of the partition 140 bend toward the connecting structure 143. The first snap-fit ​​strip 141 and the second snap-fit ​​strip 142 can be elastically connected to the connection position between adjacent air bags 101. The elastic support force can stably fix the relative position between the partition 140 and the air bag 101, reducing the movement of the partition 140 between the receiving cavities 104 of the two adjacent air bags 101.

[0067] Figure 5 This is a schematic diagram of the third structure of the partition of the multi-cavity air bag of this utility model, as shown. Figure 5 As shown, the first snap-fit ​​strip 141 and the second snap-fit ​​strip 142 of the partition 140 are bent in the direction away from the connecting structure 143. The arc-shaped surface can be elastically connected at the position of the airway 111, and can also increase the contact area between the first snap-fit ​​strip 141 and the second snap-fit ​​strip 142 and the air bag 101, making the connection more stable.

[0068] Figure 6 This is a schematic diagram of the fourth structure of the partition of the multi-cavity air bag of this utility model, as shown below. Figure 6As shown, the two protruding ends 144 of the partition 140 are strip-shaped. One protruding end 144 is connected to the first snap-fit ​​strip 141, and the other protruding end 144 is connected to the second snap-fit ​​strip 142. The two strip-shaped protruding ends 144 extend in different directions. The protruding ends 144, the first snap-fit ​​strip 141, and the second snap-fit ​​strip 142 can be set as an integral structure to improve the connection strength of the partition 140.

[0069] Figure 7 This is a schematic diagram of the fifth structure of the partition of the multi-cavity air bag of this utility model, as shown below. Figure 7 As shown, the two protruding ends 144 of the partition 140 are strip-shaped and parallel to each other, and the gas can easily enter the receiving cavity 104 of the two adjacent air bags 101 along the protruding ends 144 of the strip-shaped structure.

[0070] according to Figure 6 and Figure 7 The structure and extension direction of the protruding end 144 of the partition 140 are given. Designers can also set the protruding end 144 to other structures, such as prism structure or elastic bending structure, and can also set the protruding end 144 to extend in different directions.

[0071] Therefore, the partition 140 of the multi-cavity air bag 100 of this utility model prevents the inner walls of the air bags 101 from sticking together by providing at least two protruding ends 144, one of which is connected to the first snap-fit ​​strip 141 and extends into the receiving cavity 104 of one air bag 101, and the other of which is connected to the second snap-fit ​​strip 142 and extends into the receiving cavity 104 of the other air bag 101.

[0072] Figure 8 This is a schematic diagram of the sixth structural design of the diaphragm of the multi-cavity air bag of this utility model, as shown below. Figure 8 As shown, the partition 140 includes a first snap-fit ​​strip 141, a second snap-fit ​​strip 142, and a connecting structure 143. The first snap-fit ​​strip 141 and the second snap-fit ​​strip 142 are connected by the connecting structure 143. In this embodiment, no protruding end is provided. The first snap-fit ​​strip 141 and the second snap-fit ​​strip 142 are respectively snapped onto both sides of the airway, thereby reducing the adhesion of the inner wall inside the air bag.

[0073] The lengths of the first snap-fit ​​strip 141 and the second snap-fit ​​strip 142 are both greater than the maximum opening size of the air passage 111. The first snap-fit ​​strip 141 and the second snap-fit ​​strip 142 are located on both sides of the air passage 111, and the air passage 111 can prevent the first snap-fit ​​strip 141 or the second snap-fit ​​strip 142 from moving to the other side, thereby ensuring that a part of the partition 140 extends into the receiving cavity 104 of one of the air bags 101, and the other part extends into the receiving cavity 104 of the adjacent air bag 101.

[0074] Figure 9 This is a schematic diagram of the seventh structure of the diaphragm of the multi-cavity air bag of this utility model, as shown below. Figure 9 As shown, the partition is elongated and its length is greater than the maximum distance between the edge of the airway and the inner edge of the air bag. The partition is snapped into the airway to reduce adhesion to the inner wall of the air bag.

[0075] When the air bag is circular and located in the middle, the minimum length of the partition should be greater than or equal to the sum of the radius of the air bag and the radius of the air passage. Even if the partition slides inside the air bag's receiving cavity, one end will slide to the inner edge of the air bag, while the other end will still extend into the receiving cavity of the adjacent air bag, and will not slide into the receiving cavity of the same air bag. This ensures that the air bag can still be locked in the air passage position after multiple inflations and deflations.

[0076] The length of the partition can also be set to the maximum distance between the inner edges of the air bags. One end of the partition extends to the inner edge of an air bag, and the other end passes through the air passage to the inner edge of the adjacent air bag. This can reduce the adhesion of the inner wall of the air bag and reduce the bursting sound of the multi-chamber air bag during inflation.

[0077] Figure 10 This is a schematic diagram of a multi-chamber air bag according to the present invention. Gas is being pumped into the multi-chamber air bag 100. Figure 11 for Figure 10 The BB-direction sectional view shows that the upper part of the multi-chamber air bag 100 bears a certain load, such as... Figure 10 and Figure 11 As shown, in one embodiment of the present invention, the multi-cavity air bag 100 further includes a venting pipe 160. One end of the venting pipe 160 is welded to the air bag 101 and communicates with the receiving cavity 104 of the air bag 101. Gas can be delivered into the multi-cavity air bag 100 through the venting pipe 160 to make the multi-cavity air bag 100 in an inflated state. Gas can also be discharged from the multi-cavity air bag 100 through the venting pipe 160 to make the multi-cavity air bag 100 in a flattened state.

[0078] The partition 140 is located in the receiving cavity 104 of the air bag 101 away from the vent pipe 160. The partition 140 is located in the air bag 101 without the vent pipe 160 because the gas in the air bag 101 without the vent pipe 160 enters through the air passage 111 between two adjacent air bags 101, and the inner walls of the air bags 101 are more likely to stick together.

[0079] In one embodiment of the present invention, the spacer 140 is provided in the outermost air bag 101 of the multi-cavity air bag 100. The outermost air bag 101 bears the greatest pressure and is most prone to adhesion. By setting the spacer 140, the air passage 111 can be effectively prevented from sticking.

[0080] like Figure 10 and Figure 11 As shown, the multi-chamber air bag 100 provided by this utility model is inflated through the vent pipe 160. The upper part of the multi-chamber air bag 100 is subjected to human body pressure, but the middle sheet of the multi-chamber air bag 100 has irregular contact between the partition plate 140 and the overflow adhesive protrusion, which prevents the overflow adhesive around the weld of the middle sheet from fully adhering to the top sheet, thus failing to form a sealed space. The airflow can flow along the gap between the overflow adhesive protrusion and the partition plate 140, such as... Figure 11 As shown by the arrow in the image.

[0081] In this embodiment, each air bag 101 in the multi-cavity air bag 100 is welded from two sheets. Figure 11 The three air bags 101 shown are made of six layers of sheet material welded together.

[0082] Figure 17 An exploded view of the structure of the multi-cavity air bag of this utility model; Figure 18 Another exploded view of the multi-cavity air bag of this utility model; Figure 19 Another exploded axonometric view of the multi-chamber air bag of this utility model, as shown. Figure 17 , Figure 18 and Figure 19 As shown, the first air bag 110 is welded together from the first film 111 and the second film 112; the second air bag 120 is welded together from the third film 121 and the fourth film 122; and the third air bag 130 is welded together from the fifth film 131 and the sixth film 132.

[0083] Figure 12 This is a schematic diagram of a multi-chamber air bag according to the present invention, wherein gas is gradually injected into the three air bags 101. Figure 13 for Figure 10 CC-direction sectional view, such as Figure 12 and Figure 13 As shown, the multi-chamber air bag 100 provided by this utility model, through the air pipe 160, in the initial inflation stage, the upper part of the multi-chamber air bag 100 is subjected to human body pressure, but the middle sheet of the multi-chamber air bag 100 has partitions 140 and overflow protrusions, allowing airflow to flow freely in the gap between the overflow protrusions and the partitions 140, without affecting the normal inflation of all air bags 101. Figure 13 As shown by the arrow in the image.

[0084] Figure 14This is a schematic diagram of a multi-chamber air bag according to the present invention, wherein three air bags 101 are filled with gas. Figure 15 for Figure 12 DD-direction sectional view, such as Figure 14 and Figure 15 As shown, the multi-chamber air bag 100 provided by this utility model is fully inflated after being inflated through the air pipe 160, and the inflation is completed.

[0085] In one embodiment of the present invention, two adjacent air bags 101 are provided with a welding protrusion 150 at the connection position. The welding protrusion 150 can also be referred to as an overflow protrusion. The welding protrusion 150 is located in the receiving cavity 104 of the air bag 101 and close to the air passage 111.

[0086] In one embodiment of the present invention, the multi-chamber air bag 100 includes a plurality of welded protrusions 150, which are spaced apart around the air passage 111.

[0087] Multiple welding protrusions 150 are provided near the air passage 111 at the connection position of two adjacent air bags 101. Multiple welding protrusions 150 are provided at intervals on one side of the connection position and multiple welding protrusions 150 are provided at intervals on the other side. The welding protrusions 150 on both sides of the connection position are staggered to prevent the inner walls of the air bags 101 from being squeezed and stuck together.

[0088] In one embodiment of the present invention, the multi-cavity air bag 100 is configured as a kneading massage air bag 101, and the kneading massage air bag 101 is made of a flexible material.

[0089] The kneading massage airbag 101 is made of TPU film, which is a soft material with a thickness of 0.35mm. The embossing in the middle of the kneading massage airbag 101 all uses Φ5 holes. The kneading massage airbag 101 is in a deflated state in its normal or free state. A spacer 140 is inserted into the middle embossed hole between the fourth and fifth layers of each airbag 101 to increase the gap between the top layer film and the middle layer film. This prevents the excess adhesive around the weld bead of the middle layer film from fully adhering to the top layer film. Therefore, even though the TPU film material of the kneading massage airbag 101 is soft and in a deflated state, the risk of adhesion can still be reduced or minimized.

[0090] A TPU film, rubber, PC, or other materials can be pasted onto the edge of the weld line between the third and fifth layers to isolate the two adjacent layers. This prevents the top layer airbag 101 from being compressed and stuck together, causing it to suddenly pop up when inflated. It also prevents passengers from experiencing an instantaneous over-expansion during massage, which could lead to discomfort and affect the passenger's experience.

[0091] Among them, the partition 140 can be rounded at the corners to facilitate processing and production assembly operations. It can be made of various materials such as TPU film, rubber, and PC, making it easy to select the right material.

[0092] When using the multi-chamber air bag 100 provided by this utility model for massage, the addition of a partition 140 inside the kneading massage air bag 101 can effectively prevent adhesion, thereby effectively improving the comfort, functionality and durability of the car seat.

[0093] Figure 20 Another structural schematic diagram of the multi-cavity air bag of this utility model. Figure 21 for Figure 10 EE-directed sectional view, such as Figure 20 and Figure 21 As shown, the multi-chamber air bag is roughly square in shape, and each side is curved. In the multi-chamber airway with its irregular structure, due to the presence of septa, even when the outermost side of the multi-chamber air bag is subjected to a certain load, the adhesion between the inner walls of the air bag can still be reduced, thus reducing the occurrence of bursting sounds.

[0094] A second aspect of this invention provides a vehicle seat, the vehicle seat including a multi-chamber airbag 100 as described in any of the above embodiments.

[0095] In one embodiment, the vehicle seat has a seating area and a backrest area, and the seating area and / or the backrest area has at least one of the multi-chamber airbags 100.

[0096] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are merely preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A multi-chamber air bag (100), characterized in that, The multi-chamber air bag (100) includes: Multiple air bags (101) are stacked together, and the multi-chamber air bag (100) can be inflated or deflated along the stacking direction of the multiple air bags (101). Two adjacent air bags (101) are connected by air channels (111), and at least one air bag is provided with an air vent. A septum (140) is located within the receiving cavity of the air bag and is detachably snapped into the air passage (111), wherein a portion of the septum (140) extends into the receiving cavity (112) of one of the air bags (101) and another portion extends into the receiving cavity (112) of the adjacent other air bag (101).

2. The multi-chamber air bag (100) according to claim 1, characterized in that, The partition is elongated, and its length is greater than the maximum distance between the edge of the airway and the inner edge of the air bag.

3. The multi-chamber air bag (100) according to claim 1, characterized in that, The partition (140) includes a first snap-fit ​​strip (141) and a second snap-fit ​​strip (142) and a connecting structure (143). The first snap-fit ​​strip (141) and the second snap-fit ​​strip (142) are connected by the connecting structure (143). The connecting structure (143) passes through the air passage (111), and the maximum outer diameter of the connecting structure (143) is smaller than the minimum inner diameter of the air passage (111). The length of the first snap-fit ​​strip (141) and the length of the second snap-fit ​​strip (142) are both greater than the maximum opening size of the air passage (111). Both the first snap-fit ​​strip (141) and the second snap-fit ​​strip (142) are snapped into the air passage (111), with the first snap-fit ​​strip (141) located in the receiving cavity (112) of one air bag (101) and the second snap-fit ​​strip (142) located in the receiving cavity (112) of the adjacent other air bag (101).

4. The multi-chamber air bag (100) according to claim 3, characterized in that, The partition (140) has at least one protruding end (144), which is connected to the first snap-fit ​​strip (141) or the second snap-fit ​​strip (142) and extends into the receiving cavity (112) of the air bag (101).

5. The multi-chamber air bag (100) according to any one of claims 1-4, characterized in that, The two adjacent air bags (101) are provided with a welding protrusion (150) at the connection position. The welding protrusion (150) is located in the receiving cavity (112) of the air bag (101) and close to the air passage (111).

6. The multi-chamber air bag (100) according to claim 5, characterized in that, The multi-chamber air bag (100) includes a plurality of welded protrusions (150) which are spaced apart around the air passage (111).

7. The multi-chamber air bag (100) according to any one of claims 1-4, characterized in that, The multi-chamber air bag (100) also includes a ventilation tube (160), one end of which is welded to the air bag (101) and connected to the receiving cavity (112) of the air bag (101). The partition (140) is located in the receiving cavity (112) of the air bag (101) away from the ventilation tube (160).

8. The multi-chamber air bag (100) according to claim 7, characterized in that, The partition (140) is provided in the outermost air bag (101) of the multi-chamber air bag (100).

9. The multi-chamber air bag (100) according to claim 8, characterized in that, The multi-chamber air bag (100) is configured as a kneading massage air bag, and the kneading massage air bag is made of a flexible material.

10. A vehicle seat, characterized in that, The vehicle seat includes a multi-chamber airbag (100) as described in any one of claims 1-9, the vehicle seat having a seating area and a backrest area, the seating area and / or the backrest area having at least one of the multi-chamber airbags (100).

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