Airbag module and child seat having same

Abstract

An airbag module, comprising an airbag (1), and further comprising straps (5). The airbag is connected to the straps, the straps are used for preventing the airbag from moving outward and guiding the airbag to deploy toward the front of a backrest (2) of a child seat, and after being deployed to the front of the backrest, the airbag is prevented by the straps from further moving forward. Also provided is a child seat having the airbag module. The airbag is deployed from the side surface of the backrest toward the front of the child seat, so that the airbag does not impact a passenger in the child seat during deployment, thereby preventing injury to the passenger. The deployed airbag can effectively prevent excessive forward movement of the head of a human body, thereby better protecting the human body.

Description

Airbags and child seats with airbags Technical Field

[0001] This invention relates to the technical field of airbags, and more particularly to an airbag and a child seat with an airbag. Background Technology

[0002] Traditional child car seats do not have an airbag module. All protective performance relies on the child seat's energy absorption and seat belts. During crash tests, excessive X-axis head movement of the dummy may affect the rule score.

[0003] Some child seats include an airbag module, which is located at the front of the seat. When the airbag deploys, it extends directly towards the child. This type of airbag has a very high impact on the body and can easily cause suffocation.

[0004] Therefore, it is necessary to design an airbag and a child seat equipped with an airbag that can effectively protect the human head and prevent secondary injuries. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a safety airbag and a child seat with a safety airbag that can effectively protect the human head and prevent secondary injuries.

[0006] The present invention provides a safety airbag, including an airbag and a strap. The airbag is connected to the strap, and the strap is used to inhibit the airbag from moving outward and guide the airbag to unfold toward the front of the back of a child seat. After the airbag unfolds to the front of the back, it is inhibited from moving forward by the strap.

[0007] Furthermore, the air bag includes a main air chamber and a secondary air chamber. After the air bag is deployed, the main air chamber is located on the side of the human body, and the secondary air chamber is deployed to the front of the human body.

[0008] Furthermore, the auxiliary gas chamber is a V-shaped gas chamber.

[0009] Furthermore, the interior of the V-shaped air chamber is provided with a pull strap.

[0010] The technical solution of the present invention also provides a child seat with an airbag, including an airbag, a backrest, a seat cushion and a seat belt, and also includes a strap, wherein the airbag is connected to the strap and the strap is installed in the backrest;

[0011] Before the airbag deploys, both the airbag and the straps are concealed within the backrest.

[0012] After the airbag is deployed, it unfolds from the side of the backrest and moves toward the front of the backrest. The strap is used to inhibit the airbag from moving outward and guide the airbag to unfold toward the front of the backrest. After the airbag unfolds to the front of the backrest, it is inhibited by the strap from continuing to move forward.

[0013] When fully deployed, the airbag envelops the seatbelt and the person sitting in the child seat.

[0014] Furthermore, there are two air bags, which are respectively installed on the left and right sides of the backrest. When the air bags are deployed, the two air bags overlap in front of the human body.

[0015] Furthermore, it also includes a mounting bracket and an inflator, the mounting bracket being installed inside the backrest, the inflator being mounted on the mounting bracket, and the inflator being connected to the air bag.

[0016] Furthermore, a strap is connected to the upper and lower ends of the air bag, with one end of the strap fixedly connected to the air bag and the other end fixedly connected to the backrest.

[0017] Furthermore, the strap is an elastic strap.

[0018] Furthermore, a weakening line is provided on the side of the backrest, and when the air bag is deployed, it emerges from the weakening line of the backrest.

[0019] The above technical solution has the following beneficial effects:

[0020] In this invention, the airbag deploys from the side of the seat back towards the front of the child seat. During deployment, the airbag will not impact the passenger in the child seat, preventing injury. Furthermore, the airbag is connected to the seatbelt straps. As the airbag deploys from the side of the seat back, the straps prevent the airbag from moving outwards, thus altering its trajectory and allowing it to deploy towards the front of the child seat. Once the airbag has deployed to the front of the child seat, the straps prevent it from moving further forward. The fully deployed airbag encloses the seatbelt and the passenger, effectively preventing excessive forward head movement and providing better protection. Attached Figure Description

[0021] The disclosure of this invention will become more readily understood by referring to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings:

[0022] Figure 1 is a diagram showing the state of a child seat with an airbag before the airbag is deployed in an embodiment of the present invention.

[0023] Figure 2 is a diagram showing the state of a child seat with an airbag after the airbag has been deployed in one embodiment of the present invention.

[0024] Figure 3 is a side cross-sectional view of a child seat with an airbag in one embodiment of the present invention before the airbag is deployed;

[0025] Figure 4 is a diagram of the state of the child seat with airbag before the airbag is deployed in another embodiment of the present invention.

[0026] Figure 5 is a diagram showing the state of the child seat with airbag after the airbag has been deployed in another embodiment of the present invention.

[0027] Figure 6 is a schematic diagram of the internal structure of the air bag in another embodiment of the present invention.

[0028] Reference table for attached diagrams: Airbag 1: Main air chamber 11, Auxiliary air chamber 12, Strap 13; Backrest 2: Weakening line 21; Seat cushion 3, Safety belt 4, Strap 5, Mounting bracket 6, Inflator 7. Detailed Implementation

[0029] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0030] It is readily understood that, based on the technical solution of this invention, various structural and implementation methods can be interchanged by those skilled in the art without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of the invention.

[0031] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0032] In some embodiments of the present invention, as shown in Figures 1-2, the airbag includes an airbag 1 and a strap 5. The airbag 1 is connected to the strap 5. The strap 5 is used to inhibit the airbag 1 from moving outward and guide the airbag 1 to unfold in front of the backrest 2 of the child seat. After the airbag unfolds in front of the backrest 2, it is inhibited by the strap 5 from continuing to move forward.

[0033] In this embodiment, the airbag 1 deploys from the side of the backrest 2 towards the front of the child seat, preventing it from impacting the passenger and thus avoiding injury. Furthermore, the airbag 1 is connected to the strap 5; as it deploys from the side of the backrest 2, the strap 5 inhibits outward movement, altering its trajectory and ensuring it deploys towards the front of the child seat. Once deployed to the front of the child seat, the strap 5 prevents further forward movement. The deployed airbag 1 effectively inhibits excessive forward head movement, providing better protection.

[0034] Furthermore, as shown in Figure 2, the air bag 1 includes a main air chamber 11 and a secondary air chamber 12. After the air bag 1 is deployed, the main air chamber 11 is located on the side of the human body, and the secondary air chamber 12 is deployed to the front of the human body.

[0035] Specifically, the main air chamber 11 is directly connected to the strap 5, and the main air chamber 11 is connected to the auxiliary air chamber 12. During inflation, gas first enters the main air chamber 11, which quickly expands. The expanded main air chamber 11 is close to and in contact with the side of the backrest 2, providing stable support. Subsequently, gas enters the auxiliary air chamber 12, which expands towards the front of the child seat. Due to the stable support of the main air chamber 11, the auxiliary air chamber 12 can expand more accurately in front of the child, effectively shielding the head.

[0036] In some embodiments of the present invention, as shown in Figures 1-2, a child seat with an airbag includes an airbag 1, a backrest 2, a seat cushion 3, and a seat belt 4, and also includes a harness 5. The airbag 1 is connected to the harness 5, and the harness 5 is installed in the backrest 2.

[0037] Before the airbag 1 is deployed, both the airbag 1 and the strap 5 are hidden in the backrest 2.

[0038] After the airbag 1 is deployed, the airbag 1 is deployed from the side of the backrest 2 and moves towards the front of the backrest 2. The strap 5 is used to inhibit the airbag 1 from moving outward and guide the airbag 1 to be deployed towards the front of the backrest. After the airbag 1 is deployed to the front of the backrest 2, it is inhibited by the strap 5 from continuing to move forward.

[0039] When fully deployed, the airbag 1 encloses the seatbelt 4 and the person sitting in the child seat.

[0040] Specifically, as shown in Figure 1, the child seat includes a backrest 2 and a seat cushion 3, with a safety belt 4 installed between the backrest 2 and the seat cushion 3. When a person is sitting in the child seat, the safety belt 4 is located in front of the person to prevent the person from flying forward during a collision. However, during a collision, because the safety belt 4 mainly restrains the torso, the head is not restrained by the safety belt 4, and therefore will swing forward excessively, causing injury to the person.

[0041] As shown in Figure 3, under normal circumstances, the airbag 1 is folded inside the backrest 2. The airbag 1 is connected to the strap 5 and is hidden in the backrest 2 together with the strap 5.

[0042] As shown in Figure 2, when a collision occurs, airbag 1 inflates and deploys, initially from the side of the backrest 2. Because airbag 1 is connected to the harness 5, the harness 5 restricts airbag 1 from deploying too far outwards towards the backrest 2 and alters its trajectory, causing airbag 1 to gradually deploy towards the front of the child seat. After deploying forward, airbag 1 continues to be restrained by the harness 5, which prevents it from moving too far forward and failing to protect the occupant. Once fully deployed, airbag 1 encloses the seatbelt 4 and the occupant in the child seat, effectively preventing excessive forward movement of the head and providing better protection.

[0043] The child seat with airbags in this embodiment not only effectively protects the head from excessive forward movement, but also prevents the airbag 1 from directly impacting the face due to its side-to-forward deployment trajectory, thus avoiding secondary injuries such as suffocation. This is especially beneficial when the child seat is a child safety seat, as children's heads are more vulnerable, providing even better protection.

[0044] Furthermore, as shown in Figures 1-2, there are two air bags 1, which are installed on the left and right sides of the backrest 2 respectively. After the air bags 1 are unfolded, the two air bags 1 overlap in front of the human body.

[0045] Specifically, as shown in Figure 1, an air bag 1 is installed on both the left and right sides of the backrest 2, and both are hidden inside the backrest 2 along with the straps 5.

[0046] As shown in Figure 2, when a collision occurs, both airbags 1 deploy simultaneously, and the auxiliary air chambers 12 both deploy towards the front of the child seat. The two auxiliary air chambers 12 overlap at least partially, and the auxiliary air chamber 12 located further forward supports the auxiliary air chamber 12 located further back. Therefore, the overlapping auxiliary air chambers 12 can better inhibit the forward movement of the human head.

[0047] Furthermore, as shown in Figure 3, the child seat also includes a mounting bracket 6 and an inflator 7. The mounting bracket 6 is installed inside the backrest 2, and the inflator 7 is installed on the mounting bracket 6 and connected to the air bag 1.

[0048] The mounting bracket 6 and the inflator 7 are always fixedly installed inside the backrest 2. When the vehicle collides, the inflator 7 is detonated, inflating the airbag 1, which then deploys from the backrest 2.

[0049] Furthermore, as shown in Figure 1, a strap 5 is connected to the upper and lower ends of the airbag 1. One end of the strap 5 is fixedly connected to the airbag 1, and the other end is fixedly connected to the backrest 2. When the airbag 1 unfolds towards the outside of the backrest 2, the two straps 5 restrain the airbag 1, preventing it from unfolding excessively to the sides. The straps 5 also apply a reverse pulling force to the airbag 1, causing it to unfold towards the front of the child seat.

[0050] Preferably, the strap 5 is an elastic strap.

[0051] Furthermore, as shown in Figure 1, seat belt 4 is an X-shaped seat belt. X-shaped seat belts can better protect children.

[0052] Furthermore, as shown in Figure 3, a weakening line 21 is provided on the side of the backrest 2. When the air bag 1 is deployed, it will emerge from the weakening line 21 through the backrest 2.

[0053] Specifically, the weakening line 21 is a weakening structure set on the surface of the backrest 2. When the airbag 1 is inflated, it begins to expand, tearing the weakening line 21 and then emerging from the inside of the backrest 2. The weakening line 21 allows the airbag 1 to quickly emerge from the backrest 2 and also guides the direction of the airbag 1's expansion.

[0054] As shown in Figures 4-6, in another embodiment of the present invention, there is only one air bag 1, which is located on the left or right side of the backrest 2.

[0055] Furthermore, as shown in Figure 5, the auxiliary air chamber 12 is a V-shaped air chamber. After the auxiliary air chamber 12 is deployed, it forms a V-shape. The V-shaped air chamber has better stability and can effectively inhibit the forward movement of the human head.

[0056] Furthermore, as shown in Figure 6, a tension band 13 is provided inside the V-shaped chamber. The tension band 13 causes the upper part of the auxiliary chamber 12 to be recessed, thereby forming a V-shape, and the tension band 13 can also increase the stability of the auxiliary chamber 12.

[0057] In this invention, the airbag deploys from the side of the backrest towards the front of the child seat. During deployment, the airbag will not impact the passenger in the child seat, preventing injury. Furthermore, the airbag is connected to a strap; as the airbag deploys from the side of the backrest, the strap prevents it from moving outwards, thus altering its trajectory and allowing it to deploy towards the front of the child seat. Once the airbag has deployed to the front of the child seat, it continues to be restrained by the strap, preventing further forward deployment and excessive forward movement. The deployed airbag effectively inhibits excessive forward head movement, providing better protection for the passenger.

[0058] The above description is merely the principle and preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several other modifications can be made based on the principle of the present invention, and these modifications should also be considered within the scope of protection of the present invention.

Claims

1. An airbag, comprising an air bag, characterized in that, It also includes a strap, to which the airbag is connected. The strap is used to prevent the airbag from moving outward and to guide the airbag to unfold toward the front of the child seat back. After the airbag unfolds to the front of the backrest, it is prevented from moving further forward by the strap.

2. The airbag according to claim 1, characterized in that, The air bag includes a main air chamber and a secondary air chamber. When the air bag is deployed, the main air chamber is located on the side of the human body, and the secondary air chamber is deployed to the front of the human body.

3. The airbag according to claim 2, characterized in that, The auxiliary gas chamber is a V-shaped gas chamber.

4. The airbag according to claim 3, characterized in that, The V-shaped air chamber is equipped with a pull strap inside.

5. A child seat with an airbag, comprising a backrest, a seat cushion, and a seat belt, characterized in that, It also includes the airbag according to any one of claims 1-4, wherein the strap is installed in the backrest; Before the airbag deploys, both the airbag and the straps are concealed within the backrest. After the airbag is deployed, it unfolds from the side of the backrest and moves toward the front of the backrest. The strap is used to inhibit the airbag from moving outward and guide the airbag to unfold toward the front of the backrest. After the airbag unfolds to the front of the backrest, it is inhibited by the strap from continuing to move forward. When fully deployed, the airbag envelops the seatbelt and the person sitting in the child seat.

6. The child seat with an airbag according to claim 5, characterized in that, There are two air bags, which are installed on the left and right sides of the backrest respectively. When the air bags are deployed, the two air bags overlap in front of the human body.

7. The child seat with an airbag according to claim 5, characterized in that, It also includes a mounting bracket and an inflator, the mounting bracket being installed inside the backrest, the inflator being mounted on the mounting bracket, and the inflator being connected to the air bag.

8. The child seat with an airbag according to claim 5, characterized in that, The upper and lower ends of the air bag are each connected to a strap, one end of which is fixedly connected to the air bag and the other end is fixedly connected to the backrest.

9. The child seat with an airbag according to claim 5, characterized in that, The strap is an elastic band.

10. The child seat with an airbag according to claim 5, characterized in that, The backrest has a weakening line on its side, and when the air bag is deployed, it emerges from the weakening line of the backrest.

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