Automatic adjusting valve, head safety air bag and seat

Abstract

The invention discloses an automatic adjusting valve which comprises an upper adjusting layer and a lower adjusting layer, the upper adjusting layer and the lower adjusting layer are arranged in an up-down overlapping mode, elastic pieces are arranged on the upper adjusting layer and / or the lower adjusting layer, the upper adjusting layer and the lower adjusting layer are each divided into a plurality of subareas, and the adjacent subareas are connected through tearing lines. Before the tearing line is torn, an air leakage hole is reserved in the automatic regulating valve, and the opening of the air leakage hole is the smallest; after the tearing lines are torn, all the subareas of the upper adjusting layer and the lower adjusting layer are disconnected, and the elastic pieces are used for adjusting the opening size of the air leakage holes. The invention further discloses a head safety air bag and a seat. The size of the deflation hole can be adjusted through the automatic adjusting valve, when the first air bag is impacted, an opening of the deflation hole is enlarged, more air in the first air bag enters the second air bag, and protection on the head of the human body is increased; when the pressure of the first air bag is reduced, the opening of the air leakage hole is reduced, the pressure of the first air bag is maintained, the size of the first air bag is maintained, and the head of a passenger can be better protected.

Description

Technical Field

[0001] The present invention relates to the technical field of airbags, and particularly to an automatic regulating valve, a head airbag, and a seat. Background Art

[0002] When a series of rear-end collisions occur to a vehicle, vehicle A is rear-ended by vehicle B. At this time, the members of both vehicle A and vehicle B are toppled forward. Then vehicle C rear-ends the tail of vehicle B. Due to the impact force of vehicle C, the passengers in vehicle A and vehicle B immediately fall backward, especially the head falls very fast. Without a buffer, the head is easily injured.

[0003] In future driving modes, when the design of the airbag can be applied to zero gravity or an autonomous driving seat where the seat rotates backward along with the driving direction, the human head is prone to injury during the backward falling process.

[0004] Therefore, it is necessary to design an automatic regulating valve, a head airbag, and a seat that can better protect the heads of occupants. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an automatic regulating valve, a head airbag, and a seat that can better protect the heads of occupants.

[0006] The technical solution of the present invention provides an automatic regulating valve, including an upper regulating layer and a lower regulating layer. The upper regulating layer and the lower regulating layer are arranged overlapping up and down. Elastic members are provided on the upper regulating layer and / or the lower regulating layer. Both the upper regulating layer and the lower regulating layer are divided into multiple partitions, and adjacent partitions are connected by tearing lines;

[0007] Before the tearing line is torn, an air release hole is left on the automatic regulating valve, and the opening of the air release hole is the smallest;

[0008] After the tearing line is torn, the partitions between the upper regulating layer and the lower regulating layer are disconnected, and the elastic members are used to adjust the opening size of the air release hole.

[0009] Further, the upper regulating layer is a circular cloth piece, and the lower regulating layer is also a circular cloth piece. The air release hole is provided at the center of the upper regulating layer and the lower regulating layer.

[0010] Further, the elastic member is a circular elastic band, arranged in a circle on the upper regulating layer and / or the lower regulating layer.

[0011] Further, the upper regulating layer and the lower regulating layer are divided into multiple fan-shaped areas around the air release hole.

[0012] The present invention also provides a head airbag, which includes a first air chamber, a second air chamber, a gas generator, and the automatic regulating valve described in any one of the above. The gas generator is directly connected to the first air chamber, and the first air chamber is communicated with the second air chamber through the automatic regulating valve;

[0013] Before the tear line is torn, when the gas generator inflates the first air chamber, gas enters the second air chamber from the first air chamber through the smallest vent hole;

[0014] When the first air chamber is impacted, the tear line is torn, the vent hole is enlarged, and more gas enters the second air chamber from the first air chamber.

[0015] Further, the first air chamber is located below the second air chamber.

[0016] Further, the middle parts of the sides of the first air chamber and the second air chamber facing the human body are recessed inward after unfolding.

[0017] Further, a sewing line is provided at the top of the second air chamber.

[0018] Further, the head airbag includes a main fabric, two side fabrics, and an intermediate fabric. The upper and lower edges of the main fabric are butted and sewn, the side fabrics are sewn on the left and right sides of the main fabric, the intermediate fabric is sewn inside the main fabric and divides the first air chamber and the second air chamber, and the active regulating valve is arranged on the intermediate fabric.

[0019] The present invention also provides a seat, which includes a seat cushion, a backrest, and a headrest, and also includes the head airbag described in any one of the above. The head airbag is folded in the backrest and unfolds towards the front side of the headrest when the head airbag is inflated.

[0020] After adopting the above technical solutions, the following beneficial effects are achieved:

[0021] The present invention can adjust the size of the vent hole through the automatic regulating valve. When the first airbag is impacted, the opening of the vent hole is enlarged, and more gas in the first airbag enters the second airbag, increasing the protection for the human head; when the pressure of the first airbag becomes small, the opening of the vent hole becomes small, maintaining the pressure of the first airbag and keeping the volume of the first airbag. The present invention can better protect the head of the occupant. Description of the Drawings

[0022] Referring to the drawings, the disclosure of the present invention will become more understandable. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the protection scope of the present invention. In the drawings:

[0023] Figure 1 It is a schematic diagram before the tear line of the automatic regulating valve in an embodiment of the present invention is torn;

[0024] Figure 2 It is a cross-sectional view before the automatic regulating valve in an embodiment of the present invention is torn;

[0025] Figure 3 It is a schematic diagram after the tear line of the automatic regulating valve in an embodiment of the present invention is torn;

[0026] Figure 4 It is a schematic diagram after the head airbag in an embodiment of the present invention is deployed;

[0027] Figure 5 It is an exploded view of the head-mounted airbag in an embodiment of the present invention;

[0028] Figure 6 It is a schematic diagram before the head airbag in the seat is inflated in an embodiment of the present invention;

[0029] Figure 7 It is a schematic diagram after the head airbag in the seat is inflated in an embodiment of the present invention;

[0030] Figure 8 It is a schematic diagram before the head hits the head airbag and the head airbag is inflated in an embodiment of the present invention;

[0031] Figure 9 It is a schematic diagram before the head sinks into the head airbag and the head airbag is inflated in an embodiment of the present invention.

[0032] Corresponding table of reference numerals:

[0033] Head airbag 100: Main fabric 101, side fabric 102, intermediate fabric 103;

[0034] First air chamber 10, second air chamber 20, contraction line 201, automatic regulating valve 30;

[0035] Upper regulating layer 1, lower regulating layer 2, elastic member 3, tear line 4, air vent hole 5;

[0036] Seat cushion 200, backrest 300, headrest 400. Detailed implementation manners

[0037] The following further illustrates the detailed implementation manners of the present invention with reference to the accompanying drawings.

[0038] It is easy to understand that according to the technical solution of the present invention, under the premise of not changing the essence of the present invention, there are various structural ways and implementation ways that can be mutually replaced by those of ordinary skill in the art. Therefore, the following specific embodiments and the accompanying drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the whole of the present invention or as a limitation or restriction on the technical solution of the invention.

[0039] The orientation terms such as up, down, left, right, front, back, front side, back side, top, bottom, etc. mentioned or possibly mentioned in this specification are defined relative to the structures shown in the respective drawings. They are relative concepts, and therefore may change accordingly depending on their different positions and different usage states. Therefore, these or other orientation terms should not be interpreted as restrictive terms.

[0040] Embodiment 1:

[0041] In an embodiment of the present invention, as Figures 1-3 shown, the automatic regulating valve 30 includes an upper regulating layer 1 and a lower regulating layer 2. The upper regulating layer 1 and the lower regulating layer 2 are arranged overlapping up and down. An elastic member 3 is provided on the upper regulating layer 1 and / or the lower regulating layer 2. Both the upper regulating layer 1 and the lower regulating layer 2 are divided into a plurality of partitions, and adjacent partitions are connected by tearing lines 4;

[0042] Before the tearing line 4 is torn, an air leakage hole 5 is left on the automatic regulating valve 30, and the opening of the air leakage hole 5 is the smallest;

[0043] After the tearing line 4 is torn, the partitions between the upper regulating layer 1 and the lower regulating layer 2 are disconnected, and the elastic member 3 is used to adjust the opening size of the air leakage hole 5.

[0044] Specifically, as Figures 1-2 shown, at this time the tearing line 4 has not been torn. After the upper regulating layer 1 and the lower regulating layer 2 are overlapped up and down, a plurality of tearing lines 4 are arranged at intervals and sew the upper regulating layer 1 and the lower regulating layer 2 together. At this time, the positions of the upper regulating layer 1 and the lower regulating layer 2 are fixed by the tearing line 4, and the opening of the air leakage hole 5 is the smallest.

[0045] The elastic member 3 is sewn between the upper regulating layer 1 and the lower regulating layer 2 and arranged in a whole circle. The elastic member 3 can control the unfolding size of the upper regulating layer 1 and the lower regulating layer 2.

[0046] As Figure 3As shown, after the tear line 4 is torn, the upper adjustment layer 1 and the lower adjustment layer 2 are disconnected between their respective partitions, but the upper adjustment layer 1 and the lower adjustment layer 2 are not completely separated. When gas passes through the vent hole 5, it can blow open the upper adjustment layer 1 and the lower adjustment layer 2, and make the opening of the vent hole 5 larger. How large the opening of the vent hole 5 can increase depends on the magnitude of the gas pressure. The greater the gas pressure, the larger the opening of the vent hole 5; the smaller the gas pressure, the smaller the opening of the vent hole 5.

[0047] During the unfolding process of the upper adjustment layer 1 and the lower adjustment layer 2, the elastic member 3 is stretched; when the gas pressure decreases, the elastic member 3 pulls the upper adjustment layer 1 and the lower adjustment layer 2 back again, making the opening of the vent hole 5 shrink.

[0048] Therefore, after the tear line 4 is torn, the automatic regulating valve 30 can automatically adjust the opening size of the pressure relief hole 5 according to the magnitude of the gas pressure, thereby playing a role in automatically adjusting the pressure relief flow rate.

[0049] Furthermore, as Figures 1-3 shown, the upper adjustment layer 1 is a circular cloth piece, and the lower adjustment layer 2 is also a circular cloth piece. The vent hole 5 is provided at the center of the upper adjustment layer 1 and the lower adjustment layer 2.

[0050] Optionally, the vent hole 5 does not necessarily need to be provided at the exact center of the upper adjustment layer 1 and the lower adjustment layer 2, and can also be eccentrically arranged.

[0051] The upper adjustment layer 1 and the lower adjustment layer 2 do not necessarily need to be circular, and can also be square, hexagonal, etc. The vent hole 5 is provided at the center, and the tear line 4 extends from the vent hole 5 in a radial shape towards the edges of the upper adjustment layer 1 and the lower adjustment layer 2.

[0052] Furthermore, as Figures 1-3 shown, the elastic member 3 is a circular elastic band, arranged in a circle on the upper adjustment layer 1 and the lower adjustment layer 2.

[0053] Before the tear line 4 is torn, the elastic member 3 is in a natural state. After the tear line 4 is torn, the upper adjustment layer 1 and the lower adjustment layer 2 unfold, and the elastic member 3 is in a stretched state. The greater the gas pressure passing through the pressure relief hole 5, the longer the elastic member 3 is stretched, the larger the upper adjustment layer 1 and the lower adjustment layer 2 unfold, and the larger the opening of the pressure relief hole 5.

[0054] When the gas pressure decreases, the elastic member 3 drives the upper adjustment layer 1 and the lower adjustment layer 2 to retract, making the opening of the pressure relief hole 5 shrink.

[0055] Optionally, the elastic member 3 may be provided only on the upper adjustment layer 1 or the lower adjustment layer 2; the elastic member 3 may also be provided with multiple turns on the upper adjustment layer 1 and / or the lower adjustment layer 2; the elastic member 3 may also be provided with multiple sections spaced apart on the upper adjustment layer 1 and / or the lower adjustment layer 2, and the multiple sections of the elastic member 3 form a circle.

[0056] Furthermore, as Figures 1-3 shown, the upper adjustment layer 1 and the lower adjustment layer 2 are divided into multiple fan-shaped areas around the pressure relief hole 5, and the size of each fan-shaped area is the same, which is beneficial for the multiple tearing lines 4 to tear simultaneously.

[0057] Optionally, the sizes of the fan-shaped areas may also be different to meet different adjustment requirements.

[0058] In this embodiment, the size adjustment of the pressure relief hole 5 can be adjusted by tearing the tearing line 4. Moreover, the elastic member 3 can automatically adjust the size of the pressure relief hole 5, so that the size of the pressure relief hole 5 is proportional to the gas pressure.

[0059] In this embodiment, the upper adjustment layer 1 and the lower adjustment layer 2 are made of woven fabric, and the elastic member 3 can be made of rubber band, and the elastic member 3 is sewn on the woven fabric. When no gas passes through the pressure relief hole 5, the elastic member 3 keeps the upper adjustment layer 1 and the lower adjustment layer 2 in a wrinkled or folded state, and the upper adjustment layer 1 and the lower adjustment layer 2 are fixed by sewing multiple tearing lines 4 radially, maintaining the minimum opening of the pressure relief hole 5.

[0060] When a larger amount of gas passes through the pressure relief hole 5, the tearing line 4 is torn, the gas flushes open the upper adjustment layer 1 and the lower adjustment layer 2, and the upper adjustment layer 1 and the lower adjustment layer 2 are unfolded, so that the opening of the pressure relief hole 5 increases, and ultimately more gas can pass through the pressure relief hole 5. At this time, the elastic member 3 is stretched.

[0061] When the gas pressure decreases, the elastic member 3 causes the upper adjustment layer 1 and the lower adjustment layer 2 to retract, and reduces the opening of the pressure relief hole 5 to reduce the gas passing through the pressure relief hole 5.

[0062] Therefore, in this embodiment, the opening size of the pressure relief hole 5 can be automatically adjusted according to the size of the gas pressure. The greater the gas pressure, the more gas passes through, and the smaller the gas pressure, the less gas passes through.

[0063] Embodiment Two:

[0064] In an embodiment of the present invention, as Figure 4 shown, the head airbag 100 includes a first air chamber 10, a second air chamber 20, a gas generator (not shown in the figure), and the automatic regulating valve 30 in any of the above embodiments. The gas generator is directly connected to the first air chamber 10, and the first air chamber 10 is communicated with the second air chamber 20 through the automatic regulating valve 30;

[0065] Before the tear line 4 is torn, when the gas generator inflates the first air chamber 10, gas enters the second air chamber 20 from the first air chamber 10 through the smallest vent hole 5;

[0066] When the first air chamber 10 is impacted, the tear line 4 is torn, the vent hole 5 increases, and more gas enters the second air chamber 20 from the first air chamber 10.

[0067] Specifically, when a vehicle collision occurs, the gas generator is detonated, and the gas generator inflates towards the first air chamber 10. At this time, the opening of the vent hole 5 is the smallest, and a small amount of gas enters the second air chamber 20 from the first air chamber 10 through the vent hole 5, but the second air chamber 20 is not filled.

[0068] When a person impacts the head airbag 100, the first air chamber 10 is subjected to a relatively large pressure. At this time, the gas will tear the tear line 4, the vent hole 5 increases, and more gas enters the second air chamber 20 from the first air chamber 10, causing the second air chamber 20 to expand rapidly. The position of the second air chamber 20 corresponds to the head of the human body, and can better protect the head of the human body.

[0069] The head airbag 100 in this embodiment can produce different buffering effects according to different extrusion speeds or extrusion forces, so as to protect the upper body of the members in the accident, especially the safety of the head and neck. For members of different weights, due to their different inertial masses, the automatic regulating valve 30 can automatically adjust the opening size of the pressure relief hole 5 during the airbag detonation and impact process, and adjust according to the pressure in the air chamber to achieve different degrees of buffering effects.

[0070] Further, as Figure 4 shown, the first air chamber 10 is located below the second air chamber 20. After the first air chamber 10 is deployed, it corresponds to the shoulders of the human body, and after the second air chamber 20 is deployed, it corresponds to the head or neck of the human body.

[0071] Further, as Figure 4 shown, the middle part of the side of the first air chamber 10 and the second air chamber 20 facing the human body is recessed inward after deployment, so that the middle position of the entire airbag is lower than both sides, better protecting the upper body and head of the person.

[0072] Further, as Figure 4 shown, a contraction line 201 is provided at the top of the second air chamber 20, which can reduce the deployment height of the airbag and make the middle concave, so that the entire front of the airbag better conforms to human anatomy. After the second air chamber 20 is impacted by a person, it better reduces or even eliminates the impact on the back of the head.

[0073] Further, as Figure 5As shown in the figure, the head airbag 100 includes a main fabric 101, two side fabrics 102, and an intermediate fabric 103. The upper and lower edges of the main fabric 101 are butted and sewn. The side fabrics 102 are sewn on the left and right sides of the main fabric 101. The intermediate fabric 103 is sewn inside the main fabric 101 and divides to form a first air chamber 10 and a second air chamber 20. The automatic regulating valve 30 is arranged on the intermediate fabric 103.

[0074] Two mounting holes are formed on the intermediate fabric 103, and an automatic regulating valve 30 is mounted on each mounting hole. One edge of the intermediate fabric 103 is sewn on the upper and lower butted edges of the main fabric 101, which can reduce the number of sewing times.

[0075] Embodiment Three:

[0076] In an embodiment of the present invention, as Figures 6-9 shown, the seat includes a seat cushion 200, a backrest 300, and a headrest 400, and further includes the head airbag 100 in any of the above embodiments. The head airbag 100 is folded and stored in the backrest 300. When the head airbag 100 is inflated, it expands towards the front side of the headrest 400.

[0077] Specifically, as Figure 6 shown, the head airbag 100 is folded and stored on the side of the backrest 300 facing the occupant and is located at a position close to the headrest 400.

[0078] As Figure 7 shown, when the head airbag 100 expands, the head airbag 100 expands towards the shoulder and neck of the occupant. Among them, the first air chamber 10 expands first, and the second air chamber 20 expands later, and the second air chamber 20 is not fully filled.

[0079] As Figure 8 shown, when the human body hits backward, the shoulder of the human body presses the first air chamber 10, so that the pressure relief hole 5 increases, and the gas enters from the first air chamber 10 into the second air chamber 20.

[0080] As Figure 9 shown, the head of the human body sinks into the second air chamber 20, and the second air chamber 20 plays a role in buffering and protecting the head of the human body.

[0081] The present invention can adjust the size of the air release hole through the automatic regulating valve. When the first airbag is impacted, the opening of the air release hole increases, and more gas in the first airbag enters the second airbag, increasing the protection for the human head; when the pressure of the first airbag becomes small, the opening of the air release hole becomes small, keeping the pressure of the first airbag and maintaining the volume of the first airbag. The present invention can better protect the head of the occupant.

[0082] The above are only the principles and preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, based on the principles of the present invention, several other variations can also be made, which should also be regarded as the protection scope of the present invention.

Claims

1. An automatic regulating valve, characterized in that, It includes an upper adjustment layer and a lower adjustment layer. The upper adjustment layer and the lower adjustment layer are arranged overlapping up and down. Elastic members are provided on the upper adjustment layer and / or the lower adjustment layer. The upper adjustment layer and the lower adjustment layer are both divided into multiple partitions, and adjacent partitions are connected by tear lines; Before the tear lines are torn, there are air release holes left on the automatic regulating valve, and the openings of the air release holes are the smallest; After the tear lines are torn, the partitions of the upper adjustment layer and the lower adjustment layer are disconnected, and the elastic members are used to adjust the opening sizes of the air release holes.

2. The automatic regulating valve according to claim 1, characterized in that, The upper adjustment layer is a circular cloth piece, and the lower adjustment layer is also a circular cloth piece. The air release holes are arranged at the centers of the upper adjustment layer and the lower adjustment layer.

3. The automatic regulating valve according to claim 2, characterized in that, The elastic members are circular elastic bands arranged in a circle on the upper adjustment layer and / or the lower adjustment layer.

4. The automatic regulating valve according to claim 2, characterized in that, The upper adjustment layer and the lower adjustment layer are divided into multiple fan-shaped areas around the air release holes.

5. A head airbag, characterized in that, It includes a first air chamber, a second air chamber, a gas generator, and the automatic regulating valve according to any one of claims 1-4. The gas generator is directly connected to the first air chamber, and the first air chamber and the second air chamber are communicated through the automatic regulating valve; Before the tear lines are torn, when the gas generator inflates the first air chamber, the gas enters the second air chamber from the first air chamber through the smallest air release holes; When the first air chamber is impacted, the tear lines are torn, the air release holes are enlarged, and more gas enters the second air chamber from the first air chamber.

6. The head airbag according to claim 5, characterized in that, The first air chamber is located below the second air chamber.

7. The head airbag according to claim 5, characterized in that, The middle parts of the sides of the first air chamber and the second air chamber facing the human body are recessed inward after being unfolded.

8. The head airbag according to claim 5, characterized in that, There is a sewing line provided at the top of the second air chamber.

9. The head airbag according to claim 5, wherein, The head airbag includes a main fabric, two side fabrics, and an intermediate fabric. The upper and lower edges of the main fabric are butted and sewn. The side fabrics are sewn on the left and right sides of the main fabric. The intermediate fabric is sewn inside the main fabric and divides the first air chamber and the second air chamber. The automatic regulating valve is provided on the intermediate fabric.

10. A seat, comprising a seat cushion, a backrest and a headrest, characterized in that, It further includes the head airbag according to any one of claims 5-9. The head airbag is folded and stored in the backrest and unfolds towards the front side of the headrest when the head airbag is inflated.

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