Head protection safety air bag and automobile seat comprising same

Abstract

The utility model discloses a head protection safety air bag which is installed in a seat backrest and comprises an air bag body and an air generator, and the air generator is used for inflating air into the air bag body so that the air bag body can be rapidly unfolded and protect the head of a passenger. The air bag comprises an arc-shaped air guide bag body and a round cap-shaped head protection bag body communicated with the arc-shaped air guide bag body, and the arc-shaped air guide bag body is unfolded towards the upper portion of the rear side of a seat backrest in the posture of being tightly attached to the rear side face of the seat backrest and crosses over a seat headrest after the air generator is inflated with air. The arc-shaped air guide bag body guides air into the round-cap-shaped head protection bag body, so that the round-cap-shaped head protection bag body is unfolded and wraps the periphery of the head of a passenger. The utility model further discloses an automobile seat comprising the head protection safety air bag. The head protection device not only can protect the head of a passenger during front collision in a wide-angle lying posture, but also can be used for multi-directional protection after the seat is rotated.

Description

Technical Field

[0001] This utility model relates to the field of automotive airbag technology, and in particular to a head protection airbag and an automotive seat including the airbag. Background Technology

[0002] As the penetration rate of passenger vehicles increases, people's awareness of automotive safety is also gradually improving. Currently, most vehicles are equipped with airbags to enhance their safety restraint and protection capabilities. With the increasing popularity of smart cockpits, to meet people's pursuit of comfort, vehicles are equipped with seats that recline at large angles or rotate. Existing restraint systems cannot provide adequate protection in this situation, especially in a reclining position. In a frontal collision, if the occupant is facing forward, or in a rear-end collision, if the occupant is facing backward, even with a seatbelt worn, the head will rotate significantly in the opposite direction of the impact due to inertia, easily causing injury. Therefore, to reduce head injuries in such situations, head protection airbags are installed in the seats to restrain head movement and reduce the range of head motion.

[0003] Therefore, through beneficial exploration and research, the applicant has found a solution to the above problems, and the technical solution to be introduced below is the result of this research. Utility Model Content

[0004] One of the technical problems to be solved by this utility model is to provide a head protection airbag that can restrain the movement of the occupant's head during a car collision without causing additional injury.

[0005] The second technical problem to be solved by this utility model is to provide a car seat that includes the above-mentioned head protection airbag.

[0006] As a first aspect of this utility model, a head protection airbag is installed inside the seat back and includes an air bag and a gas generator. The gas generator is used to inflate the air bag with gas, so that the air bag can quickly deploy and protect the occupant's head.

[0007] The airbag includes an arc-shaped air guide bag body and a round-hat-shaped head protection bag body connected to the arc-shaped air guide bag body. After the gas generator fills the arc-shaped air guide bag body with gas, it unfolds upward and backward on the rear side of the seat back and extends beyond the seat headrest in a posture that is close to the rear side of the seat back. The arc-shaped air guide bag body introduces gas into the round-hat-shaped head protection bag body, so that the round-hat-shaped head protection bag body unfolds and wraps around the occupant's head.

[0008] In a preferred embodiment of this utility model, the arc-shaped air-guiding bag body includes an inner piece and an outer piece. The lower middle part of the inner piece is rectangular and the upper part is Y-shaped. The lower middle part of the outer piece is rectangular and the upper part is Y-shaped. A plurality of shuttle-shaped holes are spaced apart on the rectangular area of ​​the inner piece along the air-guiding direction. During sewing, the edges of each shuttle-shaped hole of the inner piece are sewn together, so that the inner piece bends inward. The periphery of the inner piece and the outer piece, except for their upper side edges, are sewn together.

[0009] In a preferred embodiment of this utility model, the shape of the inner piece is similar to that of the outer piece, and the size of the outer piece is slightly larger than that of the inner piece, so that the arc-shaped air-guiding bag body after the inner and outer pieces are sewn together bends inward after being inflated and unfolded.

[0010] In a preferred embodiment of the present invention, the arc-shaped air-guiding bag further includes at least one arc-shaped pull strap. Each arc-shaped pull strap has several ventilation holes spaced apart along its length. Each arc-shaped pull strap is located between the inner and outer cut pieces and is arranged perpendicular to the air-guiding direction, dividing the air-guiding cavity inside the arc-shaped air-guiding bag into multiple air-guiding channels. The inner edge of each arc-shaped pull strap is sewn onto the inner surface of the inner cut piece, and its outer edge is sewn onto the inner surface of the outer cut piece.

[0011] In a preferred embodiment of this utility model, the round hat-shaped head protection bag includes a lower cover piece and an upper cover piece;

[0012] The lower cover panel is made of several petal-shaped panels arranged side by side in a circumferential direction and sewn together. Two adjacent petal-shaped panels are sewn together along one side edge to form a hemispherical lower cover. The upper ends of all the petal-shaped panels are sewn together to form the apex of the hemispherical lower cover. The lower side edges of all the petal-shaped panels are sewn together to form the circular bottom periphery of the hemispherical lower cover.

[0013] The upper cover panel is made of several petal-shaped panels arranged side by side in a circumferential direction and sewn together. Two adjacent petal-shaped panels are sewn together along one side edge to form a hemispherical upper cover. The upper ends of all the petal-shaped panels are sewn together to form the apex of the hemispherical upper cover. The lower edges of all the petal-shaped panels are sewn together to form the circular bottom perimeter of the hemispherical upper cover.

[0014] The size of the hemispherical upper cover is larger than the size of the hemispherical lower cover. The hemispherical upper cover covers the hemispherical lower cover, and a dome-shaped cavity is formed between the two. The front half of the circular bottom periphery of the hemispherical upper cover is sewn to the front half of the circular bottom periphery of the hemispherical lower cover. The rear half of the circular bottom periphery of the hemispherical upper cover is sewn to the upper side edge of the outer fabric piece. The rear half of the circular bottom periphery of the hemispherical lower cover is sewn to the upper side edge of the inner fabric piece.

[0015] In a preferred embodiment of this utility model, a plurality of intermediate pull straps are provided between each lower petal-shaped piece and its corresponding upper petal-shaped piece for adjusting the distance between the hemispherical lower cover and the hemispherical upper cover.

[0016] In a preferred embodiment of the present invention, it further includes symmetrically arranged left and right limiting straps, one end of which is connected to the lower edge of the round hat-shaped head protection bag, and the other end is fixed to the left and right sides of the seat back.

[0017] In a preferred embodiment of the present invention, a lateral limiting strap is further included. The middle position of the lateral limiting strap is fixed to the outer surface of the arc-shaped air guide bag, and its left and right ends are fixed to the upper ends of the left and right sides of the seat back.

[0018] As a second aspect of this utility model, a car seat includes a seat back, and the aforementioned head protection airbag is provided inside the seat back.

[0019] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: This utility model adds a head protection airbag to the existing car seat, which can realize the protection of the occupant under new requirements. It can not only protect the occupant's head in a frontal collision when in a reclining position at a large angle, but also provide multi-directional protection after the seat is rotated. After it is deployed, it will not affect the occupant's comfort, nor will it cause additional injury to the occupant. Attached Figure Description

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a structural diagram of a car seat equipped with a head protection airbag according to the present invention (the airbag is in an undeployed state).

[0022] Figure 2 This is a structural diagram of a car seat equipped with a head protection airbag (the airbag is deployed and the car seat is in a reclining position at a large angle).

[0023] Figure 3 This is a schematic diagram of the airbag cut piece of the arc-shaped air guide bag body of the head protection airbag of this utility model.

[0024] Figure 4 This is a schematic diagram of the structure of the airbag cut piece of the round cap-shaped head protection bag body of the head protection airbag of this utility model.

[0025] Figure 5 This is a schematic diagram of the left and right limiting pull straps of this utility model.

[0026] Figure 6 This is a schematic diagram of the transverse limiting pull strap of this utility model.

[0027] Figure 7 This is a schematic diagram of the folding of the airbag in the head protection airbag of this utility model. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0029] See Figure 1 and Figure 2 The image shows a car seat, including a seat back 10, and a head protection airbag 20 is installed inside the seat back 10.

[0030] The head protection airbag 20 includes an airbag 200 and a gas generator (not shown in the figure). The gas generator is installed in the seat back 10 via a connecting bracket (not shown in the figure) and is used to inflate the airbag 200 with gas, so that the airbag 200 deploys quickly and protects the occupant's head.

[0031] The airbag 200 includes an arc-shaped air guide bag body 210 and a round-hat-shaped head protection bag body 220. One end of the arc-shaped air guide bag body 210 is the air inlet, which is connected to the air outlet of the gas generator, and the other end is connected to the round-hat-shaped head protection bag body 220. The function of the arc-shaped air guide bag body 210 is to provide an air guide channel, and its special shape can keep the airbag close to the seat back 10 and beyond the seat headrest 110 during deployment, ensuring that the deployment direction is controllable and stable. The function of the round-hat-shaped head protection bag body 220 is to wrap around the occupant's head on all sides and top, similar to a round hat, to provide energy absorption protection for the occupant's head.

[0032] Upon collision, the gas generator detonates, filling the arc-shaped air duct 210 with gas. This causes the arc-shaped air duct 210 to unfold upwards and backwards from the rear side of the seat back 10, extending beyond the headrest 11. Simultaneously, the arc-shaped air duct 210 introduces gas into the dome-shaped head protection bag 220, causing the dome-shaped head protection bag 220 to unfold and wrap around the occupant's head. Specifically, after unfolding, the dome-shaped head protection bag 220 completely covers the occupant's head 30, including the top, left, right, and rear sides, with its front extending to the chin area. Figure 2 As shown.

[0033] See Figure 3 and combined Figure 2 The arc-shaped air-guiding bag body 210 includes an inner panel 211, an outer panel 212, and two arc-shaped pull straps 213. The lower middle part of the inner panel 211 is rectangular, and its upper part is Y-shaped. The lower middle part of the outer panel 212 is rectangular, and its upper part is Y-shaped. Four shuttle-shaped holes 2111 are spaced apart along the air-guiding direction on the rectangular area of ​​the inner panel 211. Of course, the number of shuttle-shaped holes 2111 is not limited to that in this embodiment, and should be set according to design requirements. During sewing, the edges 2111a of each shuttle-shaped hole 2111 of the inner fabric piece 211 are sewn together, causing the inner fabric piece 211 to curve inward. The inner fabric piece 211 is then sewn to the periphery of the outer fabric piece 212, except for its upper side edge. Specifically, the edges 2112, 2113, 2114, 2116, and 2117 of the inner fabric piece 211 are sewn together with the edges 2121, 2122, 2123, 2125, and 2126 of the outer fabric piece 212, respectively. Edges 2115 and 2124 are not sewn together. The shape of the inner fabric piece 211 is similar to that of the outer fabric piece 212, but the outer fabric piece 212 is slightly larger than the inner fabric piece 211. This causes the arc-shaped air-conducting bag body 210, after being sewn together with the outer fabric piece 212, to curve inward after inflation.

[0034] The inner fabric piece 211 and the outer fabric piece 212 are fixed together by two arc-shaped straps 213 to maintain the shape and thickness after inflation. Each arc-shaped strap 213 has several ventilation holes 2131 spaced apart along its length to allow air to pass between the two sides after sewing, which helps maintain balance and stability after inflation. Each arc-shaped strap 213 is located between the inner fabric piece 211 and the outer fabric piece 212 and is arranged perpendicular to the air guiding direction, dividing the air guiding cavity inside the arc-shaped air guiding bag 210 into multiple air guiding channels.

[0035] The inner edge of each arc-shaped pull strap 213 is sewn to the inner surface of the inner panel 211, and its outer edge is sewn to the inner surface of the outer panel 212. That is, the inner edge 2132 of each arc-shaped pull strap 213 is sewn to the corresponding position 2118 of the inner panel 211, and its outer edge 2133 is sewn to the corresponding position 2127 of the outer panel 212. Of course, the number of arc-shaped pull straps 213 is not limited to that in this embodiment; it should be set according to design requirements, and it can be one or more. Due to the function of the arc-shaped pull straps 213, the arc-shaped air duct body 210 becomes arc-shaped after inflation, which can fit snugly against the seat back 20.

[0036] After the inner cut piece 211, the outer cut piece 212 and the arc-shaped pull strap 213 are sewn together, an arc-shaped chamber is formed. Position 211a (212a) in the arc-shaped chamber is the air inlet, position 211b (212b) is the air inlet channel, and position 211c (212c) is connected to the round hat-shaped head protection bag 220.

[0037] See Figure 4 and combined Figure 2 The round hat-shaped head protection bag body 220 includes a lower cover piece 221, an upper cover piece 222, and several intermediate pull straps 223.

[0038] The lower cover panel 221 is sewn together from eight circumferentially arranged petal-shaped panels 2211, 2212, 2213, 2214, 2215, 2216, 2217, and 2218. Of course, the number of petal-shaped panels is not limited to that in this embodiment; it should be determined according to design requirements. Adjacent petal-shaped panels are sewn together along one edge to form a hemispherical lower cover. The upper ends of all the petal-shaped panels are sewn together to form the apex of the hemispherical lower cover, and the lower edges of all the petal-shaped panels are sewn together to form the circular bottom perimeter of the hemispherical lower cover.

[0039] Specifically, the lower cover piece 221 is sewn as follows: the right edge 2211a of the lower petal-shaped piece 2211 is sewn to the left edge 2212a of the adjacent lower petal-shaped piece 2212, and the left edge 2211b of the lower petal-shaped piece 2211 is sewn to the right edge 2218a of the adjacent lower petal-shaped piece 2218. After all the lower petal-shaped pieces are sewn side by side, a hemisphere is formed. The upper apexes of the lower petal-shaped pieces 2211, 2212, 2213, 2214, 2215, 2216, 2217, and 2218 are sewn together. Among them, the lower petal-shaped pieces 2211, 2212, and 2213 are located in the front, and the lower petal-shaped pieces 2214, 2215, 2216, 2217, and 2218 are located in the back. The lower edges of the front petal-shaped pieces 2211, 2212, and 2213 form a semicircle, and the lower edges of the rear petal-shaped pieces 2214, 2215, 2216, 2217, and 2218 form a semicircle.

[0040] The upper cover panel 222 is sewn together from eight circumferentially arranged petal-shaped panels 2221. Of course, the number of petal-shaped panels is not limited to that in this embodiment; it should be determined according to design requirements. Adjacent petal-shaped panels 2221 are sewn together along one edge to form a hemispherical upper cover. The upper ends of all the petal-shaped panels 2221 are sewn together to form the apex of the hemispherical upper cover, and the lower edges of all the petal-shaped panels 2221 are sewn together to form the circular bottom perimeter of the hemispherical upper cover.

[0041] Specifically, the upper cover piece 222 is sewn as follows: the right edge 2221a of the upper petal-shaped piece 2221 is sewn to the left edge 2222a of the adjacent upper petal-shaped piece 2222, and the left edge 2221b of the upper petal-shaped piece 2221 is sewn to the right edge 2228a of the adjacent upper petal-shaped piece 2228. After all the upper petal-shaped pieces are sewn side by side, a hemisphere is formed. The upper apexes of the upper petal-shaped pieces 2221, 2222, 2223, 2224, 2225, 2226, 2227, and 2228 are sewn together. Among them, the upper petal-shaped pieces 2221, 2222, and 2223 are located in the front, and the upper petal-shaped pieces 2224, 2225, 2226, 2227, and 2228 are located in the back. The lower edges of the upper petal-shaped pieces 2221, 2222, and 2223 located at the front form a semicircle, and the lower edges of the upper petal-shaped pieces 2224, 2225, 2226, 2227, and 2228 located at the back form a semicircle.

[0042] The size of the hemispherical upper cover is larger than that of the hemispherical lower cover. The hemispherical upper cover covers the hemispherical lower cover and forms a round cap-shaped cavity between them. The front half of the circular bottom periphery of the hemispherical upper cover is sewn to the front half of the circular bottom periphery of the hemispherical lower cover. The rear half of the circular bottom periphery of the hemispherical upper cover is sewn to the upper side edge of the outer fabric piece 212. The rear half of the circular bottom periphery of the hemispherical lower cover is sewn to the upper side edge of the inner fabric piece 211.

[0043] Specifically, the semicircles formed by the lower edges of the upper petal-shaped pieces 2221, 2222, and 2223 of the hemispherical upper cover are sewn together with the semicircles formed by the lower edges of the lower petal-shaped pieces 2211, 2212, and 2213 of the hemispherical lower cover to achieve a sealing effect. The semicircles formed by the lower edges of the upper petal-shaped pieces 2224, 2225, 2226, 2227, and 2228 of the hemispherical upper cover are sewn together with the upper side edge 2124 of the outer piece 212, and the semicircles formed by the lower edges of the lower petal-shaped pieces 2214, 2215, 2216, 2217, and 2218 of the hemispherical lower cover are sewn together with the upper side edge 2125 of the inner piece 211, thereby achieving internal communication between the arc-shaped air-guiding bag 210 and the round-hat-shaped head protection bag 220.

[0044] A central drawstring 223 is positioned between the lower petal-shaped piece and its corresponding upper petal-shaped piece, used to adjust the distance between the hemispherical lower cover and the hemispherical upper cover. The central drawstring 223 is sewn as follows: the apex of the hemispherical upper cover and the apex of the hemispherical lower cover formed after sewing are respectively sewn to the two ends 2231 and 2232 of the central drawstring 223 to adjust the distance between them. The middle position 2221c of the upper petal-shaped piece 2221 and the middle position 2211c of the lower petal-shaped piece 2211 are respectively sewn to the two ends 2231 and 2232 of another central drawstring 223. The left edge 2221b of the upper petal-shaped piece 2221 and the left edge 2211b of the lower petal-shaped piece 2211 are respectively sewn to the two ends 2231 and 2232 of another central drawstring 223. The right edges 2221a of the upper petal-shaped piece 2221 and the right edges 2211a of the lower petal-shaped piece 2211 are sewn together with the two ends 2231 and 2232 of another middle pull strap 223, respectively. By connecting the pull straps at these three positions, the distance between the upper and lower covers can be better adjusted. Similarly, the sewing method for the pull straps between the remaining upper and lower petal-shaped pieces is similar.

[0045] To further improve the deployment stability of the airbag, see [link / reference]. Figure 5 and combined Figure 2The airbag 200 is equipped with symmetrically arranged left and right limiting straps 230a and 230b. One end of the left and right limiting straps 230a and 230b is connected to the lower edge of the round hat-shaped head protection bag body 220, and the other end is fixed to the left and right sides of the seat back 10.

[0046] Further, see Figure 6 and combined Figure 2 The air bag 200 is equipped with a lateral limiting strap 240. The middle position 241 of the lateral limiting strap 240 is fixed to the outer side of the arc-shaped air bag body 210, that is, the outer side of the outer panel 212. Its left and right ends are fixed to the upper ends of the left and right sides of the seat back 10, so that the lateral limiting strap 240 surrounds the air bag and plays a role in fixing and guiding the air channel.

[0047] See Figure 7 After the airbag 200 is folded, it, along with the gas generator 300 and other mechanisms, is placed inside the seat back 10. (Folding diagram shown below.) Figure 7 As shown, the airbag 200 has four Z-folds at the bottom and several inward folds at the top. The purpose of the Z-folds is to facilitate the rapid deployment of the airbag from the seat back, and the purpose of the inward folds is to allow it to unfold inward, thereby achieving the purpose of covering the occupant's head after the airbag is deployed.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A head protection airbag, installed within a seat back, comprising an airbag and a gas generator, the gas generator being used to inflate the airbag with gas, causing the airbag to rapidly deploy and protect the occupant's head; characterized in that, The airbag includes an arc-shaped air guide bag body and a round-hat-shaped head protection bag body connected to the arc-shaped air guide bag body. After the gas generator fills the arc-shaped air guide bag body with gas, it unfolds upward and backward on the rear side of the seat back and extends beyond the seat headrest in a posture that is close to the rear side of the seat back. The arc-shaped air guide bag body introduces gas into the round-hat-shaped head protection bag body, so that the round-hat-shaped head protection bag body unfolds and wraps around the occupant's head.

2. The head protection airbag as described in claim 1, characterized in that, The arc-shaped air-guiding bag body includes an inner panel and an outer panel. The lower middle part of the inner panel is rectangular, and its upper part is Y-shaped. The lower middle part of the outer panel is rectangular, and its upper part is Y-shaped. Several shuttle-shaped holes are spaced apart on the rectangular area of ​​the inner panel along the air-guiding direction. During sewing, the edges of each shuttle-shaped hole of the inner panel are sewn together, so that the inner panel bends inward. The periphery of the inner panel and the outer panel, except for their upper side edges, are sewn together.

3. The head protection airbag as described in claim 2, characterized in that, The inner panel has a similar shape to the outer panel, and the outer panel is slightly larger than the inner panel, so that the arc-shaped air-conducting bag body after the inner and outer panels are sewn together bends inward after inflation.

4. The head protection airbag as described in claim 2, characterized in that, The arc-shaped air-guiding bag body also includes at least one arc-shaped pull strap. Each arc-shaped pull strap has several air holes spaced apart along its length. Each arc-shaped pull strap is located between the inner and outer cut pieces and is arranged perpendicular to the air-guiding direction, dividing the air-guiding cavity inside the arc-shaped air-guiding bag body into multiple air-guiding channels. The inner edge of each arc-shaped pull strap is sewn onto the inner surface of the inner cut piece, and its outer edge is sewn onto the inner surface of the outer cut piece.

5. The head protection airbag as described in claim 2, characterized in that, The round-hat-shaped head protection bag includes a lower cover panel and an upper cover panel; The lower cover panel is made of several petal-shaped panels arranged side by side in a circumferential direction and sewn together. Two adjacent petal-shaped panels are sewn together along one side edge to form a hemispherical lower cover. The upper ends of all the petal-shaped panels are sewn together to form the apex of the hemispherical lower cover. The lower side edges of all the petal-shaped panels are sewn together to form the circular bottom periphery of the hemispherical lower cover. The upper cover panel is made of several petal-shaped panels arranged side by side in a circumferential direction and sewn together. Two adjacent petal-shaped panels are sewn together along one side edge to form a hemispherical upper cover. The upper ends of all the petal-shaped panels are sewn together to form the apex of the hemispherical upper cover. The lower edges of all the petal-shaped panels are sewn together to form the circular bottom perimeter of the hemispherical upper cover. The size of the hemispherical upper cover is larger than the size of the hemispherical lower cover. The hemispherical upper cover covers the hemispherical lower cover, and a dome-shaped cavity is formed between the two. The front half of the circular bottom periphery of the hemispherical upper cover is sewn to the front half of the circular bottom periphery of the hemispherical lower cover. The rear half of the circular bottom periphery of the hemispherical upper cover is sewn to the upper side edge of the outer fabric piece. The rear half of the circular bottom periphery of the hemispherical lower cover is sewn to the upper side edge of the inner fabric piece.

6. The head protection airbag as described in claim 5, characterized in that, Several intermediate straps are provided between each lower petal-shaped piece and its corresponding upper petal-shaped piece to adjust the distance between the hemispherical lower cover and the hemispherical upper cover.

7. The head protection airbag as described in any one of claims 1 to 6, characterized in that, It also includes symmetrically arranged left and right limiting straps, one end of which is connected to the lower edge of the round hat-shaped head protection bag, and the other end is fixed to the left and right sides of the seat back.

8. The head protection airbag as described in any one of claims 1 to 6, characterized in that, It also includes a lateral limiting strap, the middle position of which is fixed to the outer surface of the arc-shaped air guide bag, and its left and right ends are fixed to the upper ends of the left and right sides of the seat back.

9. A car seat, including a seat back, wherein a head protection airbag as described in any one of claims 1 to 8 is disposed within the seat back.

Images