Copilot safety air bag capable of protecting knees and head simultaneously

Abstract

The co-driver safety air bag capable of protecting the knees and the head at the same time comprises a main body assembly, and the main body assembly comprises an upper-layer bag piece, a lower-layer bag piece, two side bag pieces, an air release opening, an upper inner pull belt, a lower inner pull belt, an inflation chamber and sealing rubber; the upper-layer bag piece, the lower-layer bag piece and the two side bag pieces are sewn together through sewing threads to form the inflation chamber. The air bag is folded and then placed in the plastic cover, the air bag is fixed to a metal framework below an automobile glove box through a stud on the air generator, and when an automobile is in head-on collision, air in the air generator rushes into an inflation chamber formed by the upper-layer bag piece, the lower-layer bag piece and the two side bag pieces through an air leakage opening; at the moment, the inflation chamber is inflated, the air bag is rapidly expanded to cover the knee and head areas of the co-driver, then the risk that the passenger leans forwards to impact the center console is reduced, collision energy of the upper trunk is buffered, and the passenger is better protected in cooperation with a safety belt.

Description

Technical Field

[0001] The invention relates to a safety airbag, in particular to a passenger safety airbag capable of protecting knees and head at the same time, belonging to the technical field of automobile safety airbags. Background Art

[0002] As a passive safety device, the main design purpose of automobile airbags is to quickly inflate and expand to form a protective air cushion when a vehicle crashes. This air cushion can act as a buffer between the driver or passengers and other hard parts in the car (such as the steering wheel, dashboard or window glass), effectively reducing the impact of the collision and thus reducing the risk of injury.

[0003] As people pay more and more attention to automobile travel safety, the safety of passengers in collision accidents is particularly important. As a star product in the field of automobile passive safety, the importance of airbags is self-evident. At present, there are only mature airbag products on the market that protect the head of the front passenger. Considering the pressure of vehicle manufacturing costs, the main engine manufacturers often do not equip an additional knee airbag. In the event of a serious collision, the body posture of the front passenger is moving forward and downward at the same time, and the invasion of the center console makes it very easy to injure the front passenger's knees. For this reason, a front passenger airbag that can protect both the knees and the head is proposed. Summary of the invention

[0004] In view of this, the present invention provides a passenger airbag that can protect both the knees and the head, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial option.

[0005] The technical solution of the embodiment of the present invention is implemented as follows: a passenger airbag capable of protecting both the knee and the head, comprising a main body assembly, wherein the main body assembly comprises an upper bag sheet, a lower bag sheet, two side bag sheets, an air vent, an upper inner drawstring, a lower inner drawstring, an inflation chamber and a sealing rubber;

[0006] The upper bag sheet, the lower bag sheet and the two side bag sheets are sewn together by sewing thread to form the inflation chamber, the upper inner drawstring is sewn to the inside of the upper bag sheet, the lower inner drawstring is sewn to the inside of the lower bag sheet, and the air vent is installed on the outer side wall of the upper bag sheet;

[0007] The inner parts of the upper inner drawstring and the lower inner drawstring are both provided with circular vent holes at equal intervals, and the sealing rubber is bonded to the inner side wall of the lower bag sheet.

[0008] Further preferably, an inflatable assembly is disposed outside the sealing rubber, and the inflatable assembly includes a gas generator, two fixing plates, two positioning columns and four connecting pins;

[0009] The two ends of the four connecting pins are symmetrically fixedly connected to the adjacent surfaces of the two fixing plates, the two positioning columns are symmetrically fixedly connected to the front surface of the fixing plate located in the front, and the lower surface of the connecting plate of the gas generator is attached to the front surface of the fixing plate located in the front.

[0010] Further preferably, the front surface of the fixing plate located at the rear is bonded to the rear surface of the sealing rubber and is located inside the inflation chamber, and the rear surface of the other fixing plate is bonded to the outer side wall of the lower bag sheet.

[0011] Further preferably, two positioning holes are symmetrically provided on the connecting plate of the gas generator, and the outer side walls of the two positioning columns are slidably connected to the inner side walls of the positioning holes.

[0012] Further preferably, an outer side wall of the gas generator is fixedly connected with a mounting plate, and a front surface of the mounting plate is symmetrically fixedly connected with four studs.

[0013] Further preferably, the inflation assembly further includes two limit seats, a pull plate, a spring, two limit rods and two clamping blocks;

[0014] The two limit seats are symmetrically fixedly connected to the two sides of the front surface of the fixing plate located in the front, one end of the two limit rods is symmetrically fixedly connected to one side of the block, the pull plate is fixedly connected to the other end of the two limit rods, and the spring is sleeved on the outer side wall of the limit rod.

[0015] Further preferably, the limiting rod is slidably connected to the inside of the limiting seat, and the clamping block is slidably connected to the inner side wall of the limiting seat.

[0016] Further preferably, two ends of the spring respectively support the clamping block and the limiting seat, and an avoidance groove is provided inside the clamping block.

[0017] Further preferably, the upper surface of the connecting plate of the gas generator is attached to the lower surfaces of the two clamping blocks.

[0018] Further preferably, the positioning column is located inside the avoidance groove and is slidably connected to the avoidance groove.

[0019] The embodiment of the present invention has the following advantages due to the adoption of the above technical solution:

[0020] 1. The present invention folds the airbag and places it in a plastic cover, and fixes the gas generator on the metal frame under the car glove box through studs. When the vehicle collides head-on, the gas inside the gas generator rushes into the inflation chamber composed of the upper bag sheet, the lower bag sheet and the two side bag sheets through the vent. At this time, the inflation chamber is inflated, and the airbag expands rapidly to cover the passenger's knee and head area, thereby reducing the risk of the occupant leaning forward and hitting the center console, buffering the collision energy of the upper torso, and cooperating with the seat belt to better protect the occupant.

[0021] 2. When installing the gas generator of the present invention, the positioning hole in the connecting plate of the gas generator is connected with the positioning column, and then the gas generator is pressed downward. The gas generator pushes the two blocks away from each other. At this time, the spring is compressed. When the connecting plate of the gas generator fits against the fixing plate, the two blocks are reset under the push of the spring. The vertical position of the gas generator can be limited by the two blocks, and the horizontal position of the gas generator can be limited by the positioning column. Then, the installation of the gas generator is completed. The snap-on structure can realize rapid installation of the gas generator.

[0022] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a structural diagram of a passenger airbag capable of protecting both the knees and the head of the present invention;

[0025] Figure 2 is a cross-sectional view of the present invention;

[0026] Figure 3 It is a structural diagram of the inflatable component of the present invention;

[0027] Figure 4 It is a schematic diagram of the exploded view of the inflatable assembly of the present invention;

[0028] Figure 5 It is a block structure diagram of the present invention.

[0029] : 101, main body assembly; 11, upper bag sheet; 12, lower bag sheet; 13, side bag sheet; 14, vent; 15, upper inner pull strap; 16, lower inner pull strap; 17, inflation chamber; 301, inflation assembly; 31, gas generator; 32, sealing rubber; 33, fixing plate; 34, positioning column; 35, connecting pin; 36, mounting plate; 37, stud; 38, limit seat; 39, pull plate; 40, spring; 41, limit rod; 42, avoidance groove; 43, block. DETAILED DESCRIPTION

[0030] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0031] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0032] In the existing technology, there are only mature airbag products on the market that protect the front passenger's head. Considering the pressure of vehicle manufacturing costs, OEMs often do not equip an additional knee airbag. In the event of a serious collision accident, the front passenger's body posture moves forward and downward at the same time, and the invasion of the center console makes it very easy to injure the front passenger's knees.

[0033] like Figure 1-Figure 5 As shown, an embodiment of the present invention provides a passenger airbag capable of protecting knees and head at the same time, comprising a main body assembly 101, wherein the main body assembly 101 comprises an upper bag sheet 11, a lower bag sheet 12, two side bag sheets 13, an air release port 14, an upper inner drawstring 15, a lower inner drawstring 16, an inflation chamber 17 and a sealing rubber 32;

[0034] The upper bag sheet 11, the lower bag sheet 12 and the two side bag sheets 13 are sewn together by sewing threads to form an inflation chamber 17, the upper inner drawstring 15 is sewn to the inside of the upper bag sheet 11, and the lower inner drawstring 16 is sewn to the inside of the lower bag sheet 12;

[0035] The air release port 14 is installed on the outer side wall of the upper bag sheet 11, and air can be released through the air release port 14 to reduce the pressure in the inflation chamber 17;

[0036] After the airbag is inflated, the upper bag sheet 11 corresponds to the position of the front passenger's head, while the lower bag sheet 12 corresponds to the position of the front passenger's legs;

[0037] The upper inner drawstring 15 and the lower inner drawstring 16 are evenly spaced with circular vents to achieve rapid inflation.

[0038] The sealing rubber 32 is bonded to the inner wall of the lower bag sheet 12, and the deployment posture of the airbag and the thickness of the airbag after inflation can be adjusted through the upper inner drawstring 15 and the lower inner drawstring 16;

[0039] In order to solve the problems existing in the prior art, an embodiment of the present invention provides a passenger airbag that can protect the knees and the head at the same time and solves the problems through the above technical solutions:

[0040] After being folded, the airbag is placed in a plastic cover, and the gas generator 31 is fixed to the metal frame under the car glove box by means of studs 37. When the vehicle collides head-on, the gas inside the gas generator 31 rushes into the inflation chamber 17 composed of the upper bag sheet 11, the lower bag sheet 12 and the two side bag sheets 13 through the vent 14. At this time, the inflation chamber 17 is inflated, and the airbag expands rapidly to cover the knee and head area of ​​the co-driver, thereby reducing the risk of the occupant leaning forward and hitting the center console, buffering the collision energy of the upper torso, and cooperating with the seat belt to better protect the occupant.

[0041] In one embodiment, an inflatable component 301 is disposed outside the sealing rubber 32, and the inflatable component 301 includes a gas generator 31, two fixing plates 33, two positioning columns 34 and four connecting pins 35;

[0042] The two ends of the four connecting pins 35 are symmetrically fixedly connected to the adjacent surfaces of the two fixing plates 33, the two positioning pillars 34 are symmetrically fixedly connected to the front surface of the fixing plate 33 located in the front, the lower surface of the connecting plate of the gas generator 31 is attached to the front surface of the fixing plate 33 located in the front, the gas nozzle of the gas generator 31 is connected to the inflation chamber 17, and the sealing rubber 32 is bonded to the reserved hole to seal and constrain the nozzle of the gas generator 31;

[0043] When the gas generator 31 is working, the gas flows into the inflation chamber 17 composed of the upper bag sheet 11, the lower bag sheet 12 and the two side bag sheets 13 through the venting port 14. At this time, the airbag expands rapidly to protect the front passenger's knee and head areas.

[0044] In one embodiment, the front surface of the fixing plate 33 located at the rear is bonded to the rear surface of the sealing rubber 32 and is located inside the inflation chamber 17, and the rear surface of another fixing plate 33 is bonded to the outer wall of the lower bag sheet 12, and the gas generator 3 can be installed and fixed through the fixing plate 33.

[0045] In one embodiment, two positioning holes are symmetrically opened on the connecting plate of the gas generator 31, and the outer walls of the two positioning columns 34 are slidably connected to the inner walls of the positioning holes. Through the cooperation between the positioning holes and the positioning columns 34, a positioning function can be played when installing the gas generator 31.

[0046] In one embodiment, the outer wall of the gas generator 31 is fixedly connected to a mounting plate 36, and the front surface of the mounting plate 36 is symmetrically fixedly connected to four studs 37. The mounting plate 36 can be fixed to the vehicle body frame through the studs 37, thereby fixing the gas generator 31 on the metal frame under the car glove box.

[0047] In one embodiment, the inflatable component 301 further includes two limit seats 38, a pull plate 39, a spring 40, two limit rods 41 and two clamping blocks 43;

[0048] The two limit seats 38 are symmetrically fixedly connected to the two sides of the front surface of the fixing plate 33 located in the front, one end of the two limit rods 41 is symmetrically fixedly connected to one side of the block 43, the pull plate 39 is fixedly connected to the other end of the two limit rods 41, and the spring 40 is sleeved on the outer wall of the limit rod 41. By pulling the pull plate 39, the pull plate 39 drives the limit rod 41, and the limit rod 41 drives the block 43, the gas generator 31 can be quickly disassembled.

[0049] In one embodiment, the limit rod 41 is slidably connected to the inside of the limit seat 38, and the block 43 is slidably connected to the inner wall of the limit seat 38. Through the cooperation between the limit rod 41 and the limit seat 38, the position of the block 43 can be limited to enhance the overall stability.

[0050] In one embodiment, the two ends of the spring 40 respectively support the block 43 and the limit seat 38, and the block 43 is provided with an avoidance groove 42. The upper surface of the connecting plate of the gas generator 31 is attached to the lower surfaces of the two blocks 43. The spring 40 pushes the block 43, and the two blocks 43 are close to each other. The block 43 limits the vertical position of the gas generator 31, so that the position of the gas generator 31 can be fixed.

[0051] When installing the gas generator 31, first align the positioning hole in the connecting plate of the gas generator 31 with the positioning column 34, and then press the gas generator 31 downward so that the gas generator 31 contacts the block 43. Since the contact surface of the block 43 is an inclined surface, the gas generator 31 can push the block 43 to move. At this time, the spring 40 is compressed by the force. When the gas generator 31 is attached to the fixing plate 33, the installation of the gas generator 31 is completed.

[0052] In one embodiment, the positioning column 34 is located inside the avoidance groove 42 and is slidably connected to the avoidance groove 42 . The positioning column 34 can limit the horizontal position of the gas generator 31 , thereby fixing the position of the gas generator 31 .

[0053] When the present invention is working: first install the gas generator 31, dock the positioning hole in the connecting plate of the gas generator 31 with the positioning column 34, then press the gas generator 31 downward, the gas generator 31 pushes the two blocks 43 away from each other, at this time the spring 40 is compressed, when the connecting plate of the gas generator 31 is attached to the fixing plate 33, under the push of the spring 40, the two blocks 43 are reset, the vertical position of the gas generator 31 can be limited by the two blocks 43, and the horizontal position of the gas generator 31 can be limited by the positioning column 34, and then the gas generator 31 is installed;

[0054] The mounting plate 36 is fixed to the vehicle body frame by means of studs 37, and the gas generator 31 is fixed to the metal frame under the glove box of the vehicle;

[0055] The airbag is folded and placed in a plastic cover, and fixed to the metal frame under the car glove box through the studs 37 on the gas generator 31. When the vehicle collides head-on, the gas inside the gas generator 31 rushes into the inflation chamber 17 composed of the upper bag sheet 11, the lower bag sheet 12 and the two side bag sheets 13 through the vent 14. At this time, the inflation chamber 17 is inflated, and the airbag expands rapidly to cover the knee and head area of ​​the passenger, thereby reducing the risk of the occupant leaning forward and hitting the center console, buffering the collision energy of the upper torso, and cooperating with the seat belt to better protect the occupant.

[0056] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A passenger airbag capable of protecting both the knees and the head, comprising a main body assembly (101), Features: The main body component (101) comprises an upper bag sheet (11), a lower bag sheet (12), two side bag sheets (13), an air vent (14), an upper inner drawstring (15), a lower inner drawstring (16), an inflation chamber (17) and a sealing rubber (32); The upper bag sheet (11), the lower bag sheet (12) and the two side bag sheets (13) are sewn together by sewing thread to form the inflation chamber (17); the upper inner drawstring (15) is sewn to the inside of the upper bag sheet (11); the lower inner drawstring (16) is sewn to the inside of the lower bag sheet (12); and the air vent (14) is installed on the outer side wall of the upper bag sheet (11); The upper inner drawstring (15) and the lower inner drawstring (16) are provided with circular ventilation holes at equal intervals, and the sealing rubber (32) is bonded to the inner side wall of the lower bag sheet (12).

2. A passenger airbag capable of protecting both the knee and the head according to claim 1, Features: An inflatable assembly (301) is arranged outside the sealing rubber (32), and the inflatable assembly (301) comprises a gas generator (31), two fixing plates (33), two positioning columns (34) and four connecting pins (35); The two ends of the four connecting pins (35) are symmetrically fixedly connected to the adjacent surfaces of the two fixing plates (33), the two positioning columns (34) are symmetrically fixedly connected to the front surface of the fixing plate (33) located in the front, and the lower surface of the connecting plate of the gas generator (31) is attached to the front surface of the fixing plate (33) located in the front.

3. A passenger airbag capable of protecting both the knee and the head according to claim 2, Features: The front surface of the fixing plate (33) located at the rear is bonded to the rear surface of the sealing rubber (32) and is located inside the inflation chamber (17), and the rear surface of the other fixing plate (33) is bonded to the outer side wall of the lower bag sheet (12).

4. A passenger airbag capable of protecting both the knee and the head according to claim 3, Features: Two positioning holes are symmetrically provided on the connection plate of the gas generator (31), and the outer side walls of the two positioning columns (34) are slidably connected to the inner side walls of the positioning holes.

5. A passenger airbag capable of protecting both the knee and the head according to claim 4, Features: The outer side wall of the gas generator (31) is fixedly connected to a mounting plate (36), and the front surface of the mounting plate (36) is symmetrically fixedly connected to four studs (37).

6. A passenger airbag capable of protecting both the knees and the head according to claim 5, Features: The inflation assembly (301) further comprises two limit seats (38), a pull plate (39), a spring (40), two limit rods (41) and two clamping blocks (43); The two limit seats (38) are symmetrically fixedly connected to the two sides of the front surface of the fixing plate (33) located in the front, one end of the two limit rods (41) is symmetrically fixedly connected to one side of the clamping block (43), the pull plate (39) is fixedly connected to the other end of the two limit rods (41), and the spring (40) is sleeved on the outer side wall of the limit rod (41).

7. A passenger airbag capable of protecting both the knees and the head according to claim 6, Features: The limiting rod (41) is slidably connected to the inside of the limiting seat (38), and the clamping block (43) is slidably connected to the inner side wall of the limiting seat (38).

8. A passenger airbag capable of protecting both the knees and the head according to claim 7, Features: The two ends of the spring (40) respectively support the clamping block (43) and the limiting seat (38), and an avoidance groove (42) is provided inside the clamping block (43).

9. A passenger airbag capable of protecting both the knees and the head according to claim 8, Features: The upper surface of the connecting plate of the gas generator (31) is attached to the lower surfaces of the two clamping blocks (43).

10. A passenger airbag capable of protecting both the knees and the head according to claim 9, Features: The positioning column (34) is located inside the avoidance groove (42) and is slidably connected to the avoidance groove (42).

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