Safety airbag connection mechanism with enhanced joint sealing

Abstract

The present invention relates to the technical field related to automobile accessories, and specifically to an airbag connecting mechanism with enhanced joint sealing, the airbag connecting mechanism with enhanced joint sealing comprising a steering wheel inner seat, an airbag outer shell, a sealing ring and a fastener, an upper side surface of the steering wheel inner seat is provided with an airbag mounting groove, and a mounting hole is provided on the bottom surface of the airbag mounting groove; by configuring the airbag outer shell to be composed of a panel, an outer ring layer, an inner ring layer and a sealing layer, and arranging an auxiliary sealing airbag mounting seat on the inner side surface of the panel, the airbag outer shell can form an extrusion effect on the auxiliary sealing airbag inside the auxiliary sealing airbag mounting seat during actual installation, so that the inner cavity of the sealing ring is inflated, thereby driving the sealing ring to expand, thereby effectively ensuring the sealing effect between the airbag outer shell and the airbag mounting groove, thereby preventing water from entering the interior of the airbag outer shell and causing airbag failure, thereby improving the application reliability of the airbag.

Description

Technical Field

[0001] The invention relates to the technical field related to automobile accessories, in particular to a safety airbag connection mechanism with enhanced joint sealing. Background Art

[0002] The airbag system is a passive safety protection system. It is used in conjunction with seat belts to provide effective anti-collision protection for passengers. It is mainly composed of airbag sensors, anti-collision airbags and electronic control devices. When a car collides, the car airbag can reduce the rate of head injuries by 25% and the rate of facial injuries by about 80%.

[0003] However, the airbag on the traditional steering wheel for protecting the driver's face is usually embedded and installed in the center of the steering wheel, and there is no special sealing structure between the traditional airbag cover and the steering wheel panel. Therefore, when the driver drinks water or other operations cause water to spill, it may cause water to penetrate along the gap between the airbag cover and the steering wheel panel to the position where the airbag and the steering wheel line are connected, thereby causing a short circuit in the line, thereby causing the airbag to fail, leaving certain safety hazards. To this end, the present invention proposes an airbag connection mechanism with enhanced joint sealing to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide an airbag connection mechanism with enhanced joint sealing to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: an airbag connection mechanism with enhanced joint sealing, the airbag connection mechanism with enhanced joint sealing comprising:

[0006] An inner seat of a steering wheel, wherein an airbag mounting groove is provided on an upper side surface of the inner seat of the steering wheel, and a mounting hole is provided on a bottom surface of the airbag mounting groove;

[0007] An airbag housing, wherein the airbag housing is embedded in the airbag installation groove, and an airbag body of the airbag is arranged in an inner cavity of the airbag housing;

[0008] A sealing ring, which is arranged on the airbag housing and is used to seal the gap between the airbag housing and the airbag mounting groove;

[0009] A fastener is used for positioning and connecting the airbag housing to the inner seat of the steering wheel.

[0010] Preferably, the airbag housing is composed of a panel, an outer ring layer, an inner ring layer and a sealing layer. The panel, outer ring layer and inner ring layer are integrally formed, and the panel is an annular plate. The sealing layer is made of leather material and is fixedly glued to the outside of the panel.

[0011] Preferably, a sealing groove is provided on the outer wall of the outer ring layer, the sealing ring is embedded and installed in the sealing groove, an auxiliary sealing airbag mounting seat is provided at a position on the inner side surface of the panel between the outer ring layer and the inner ring layer, the auxiliary sealing airbag mounting seats are arranged in groups, and two groups of auxiliary sealing airbag mounting seats are symmetrically arranged, an air avoidance groove is provided on the side wall of the outer ring layer, and primary openings are provided on both sides of the bottom surface of the air avoidance groove, the auxiliary sealing airbag mounting seat is a circular tube structure, and a secondary opening and a tertiary opening are provided on the side wall of the auxiliary sealing airbag mounting seat, the secondary opening is arranged corresponding to the primary opening, and the tertiary openings on the same group of auxiliary sealing airbag mounting seats are arranged correspondingly.

[0012] Preferably, the sealing ring is a flexible rubber tube structure, and the cross-section of the sealing ring is semicircular when not under stress. The sealing ring is connected to an auxiliary sealing airbag through a connecting tube, and the auxiliary sealing airbag is embedded in the inner cavity of the auxiliary sealing airbag mounting seat. A force-bearing plate is movably arranged in the inner cavity of the auxiliary sealing airbag mounting seat, and the force-bearing plates in the same group are connected by a force-bearing rod, and the force-bearing rod is movably arranged in the third-level opening.

[0013] Preferably, a threaded seat is integrally formed on the outer wall of the inner ring layer, and a threaded hole is opened on the threaded seat. When the fastener is actually installed, the fastener passes through the mounting hole on the inner seat of the steering wheel and is screwed and positioned in the threaded hole on the threaded seat.

[0014] Preferably, a support spring is fixedly glued on the force-bearing plate, a support plate is integrally formed on the side wall of the threaded seat, the end of the support spring is arranged to abut against the support plate, the spacing value between the threaded seat and the auxiliary sealing airbag mounting seat is greater than the thickness value of the force-bearing plate and the force-bearing rod, and the support spring is in a reset state. When the support spring and the support plate are in contact with each other, the force plate is located at the inner cavity port of the auxiliary sealing airbag mounting seat.

[0015] Preferably, a limiting cap groove is provided at the bottom of the hexagonal wrench groove on the fastener, a push rod hole is provided at the bottom of the limiting cap groove, a push rod is inserted and installed in the push rod hole, and a limiting cap is integrally formed at the outer end of the push rod. When the limiting cap is embedded in the limiting cap groove, the push rod forms an extrusion force on the force-bearing rod, and at this time, the auxiliary sealing airbag is pressurized, causing the gas in the auxiliary sealing airbag to be squeezed into the inner cavity of the sealing ring.

[0016] Preferably, an elastic rod is integrally formed on the inner end face of the fastener, and the elastic rod is arranged in a circle around the circumference of the fastener, and a clamping block is integrally formed on the outer side face of the end of the elastic rod, and a force block is integrally formed on the inner side face of the end of the elastic rod, and when the push rod is inserted into the push rod hole, the force block and the side wall of the push rod are subjected to force, thereby causing the elastic rod to bend outward, and at this time, the clamping block is engaged with the lower end face of the threaded seat.

[0017] Preferably, when the elastic rod is in a reset state, the clamping block is completely retracted into the area covered by the end surface of the fastener.

[0018] Preferably, a locking groove is provided on the side wall of the limiting cap groove, and the locking groove is arranged in a hook shape. A locking block is integrally formed on the outer side wall of the limiting cap. When the locking block moves to the end of the locking groove, the limiting cap is embedded in the limiting cap groove, and a hexagonal notch is provided on the outer end surface of the limiting cap.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. By providing an airbag connection mechanism with a reinforced joint seal composed of a steering wheel inner seat, an airbag housing, a sealing ring and a fastener, and by providing the airbag housing with a panel, an outer ring layer, an inner ring layer and a sealing layer, and providing an auxiliary sealing airbag mounting seat on the inner side of the panel, the airbag housing can squeeze the auxiliary sealing airbag inside the auxiliary sealing airbag mounting seat during actual installation, so that the inner cavity of the sealing ring is inflated, thereby driving the sealing ring to expand, thereby effectively ensuring the sealing effect between the airbag housing and the airbag mounting groove, thereby preventing water from entering the airbag housing and causing airbag failure, thereby improving the application reliability of the airbag;

[0021] 2. By arranging an elastic rod on the inner end face of the fastener, arranging a clamping block on the outer side face of the end of the elastic rod, and arranging a force-bearing block on the inner side face of the end of the elastic rod, when the ejector rod is inserted into the ejector rod hole, a force is exerted on the force-bearing block, so that the clamping block and the lower end face of the threaded seat are engaged with each other, so that the fastener is self-locking, thereby preventing the fastener from loosening;

[0022] 3. A hook-shaped engaging groove is opened on the side wall of the limiting cap groove, and a clamping block is arranged on the outer side wall of the limiting cap, so that a force is applied to the force plate through the auxiliary sealing airbag, and a force is applied to the ejector rod through the force rod, so that the clamping block is engaged at the end of the engaging groove, thereby ensuring the installation stability of the ejector rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 A half-section view of the present invention;

[0025] Figure 3 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0026] Figure 4 for Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0027] Figure 5 for Figure 4 A magnified schematic diagram of the structure at C in the middle;

[0028] Figure 6 This is a schematic diagram of the structure of the airbag housing of the present invention;

[0029] Figure 7 for Figure 6 A magnified schematic diagram of the structure at D in the middle;

[0030] Figure 8 A half-section view of the auxiliary sealing airbag mounting seat of the present invention at the position of the third-level opening;

[0031] Fig. 9 for Figure 8 The enlarged schematic diagram of the structure at E in the middle;

[0032] Fig.10 This is a schematic diagram of the sealing ring structure of the present invention;

[0033] Fig.11 It is a schematic diagram of the connection between the stress-bearing plate and the stress-bearing rod of the present invention;

[0034] Fig.12 A half-section view of the fastener of the present invention;

[0035] Fig.13 for Fig.12 A magnified schematic diagram of the structure at F in the middle;

[0036] Fig.14 It is a schematic diagram of the top rod structure of the present invention.

[0037] In the figure: steering wheel inner seat 1, airbag housing 2, sealing ring 3, fastener 4, panel 5, outer ring layer 6, inner ring layer 7, sealing layer 8, sealing groove 9, air avoidance groove 10, primary opening 11, auxiliary sealing airbag mounting seat 12, secondary opening 13, tertiary opening 14, threaded seat 15, support plate 16, threaded hole 17, auxiliary sealing airbag 18, connecting pipe 19, force plate 21, force rod 22, support spring 23, hexagonal wrench slot 24, limiting cap slot 25, push rod hole 26, push rod 27, engaging slot 28, limiting cap 29, block 30, hexagonal notch 31, elastic rod 32, block 33, force block 34. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1-14 The present invention provides the following three preferred embodiments:

[0040] Embodiment 1

[0041] See also Figure 1-3 and Figure 6-12 , an airbag connecting mechanism with enhanced joint sealing, the airbag connecting mechanism with enhanced joint sealing comprises a steering wheel inner seat 1, an airbag shell 2, a sealing ring 3 and a fastener 4, the upper side of the steering wheel inner seat 1 is provided with an airbag mounting groove, the bottom surface of the airbag mounting groove is provided with a mounting hole, the airbag shell 2 is embedded and installed in the airbag mounting groove, and the airbag body of the airbag is arranged in the inner cavity of the airbag shell 2, the sealing ring 3 is arranged on the airbag shell 2, and the sealing ring 3 is used to seal the gap between the airbag shell 2 and the airbag mounting groove, the fastener 4 is used to position and connect the airbag shell 2 to the steering wheel inner seat 1, the airbag shell 2 is composed of a panel 5, an outer ring layer 6, an inner ring layer 7 and a sealing layer 8, the panel 5, the outer ring layer 6 and the inner ring layer 7 are integrally formed, and the panel 5 is an annular plate, the sealing layer 8 is made of leather material, and the sealing layer 8 is fixedly glued to the outer side of the panel 5.

[0042] A sealing groove 9 is provided on the outer wall of the outer ring layer 6, and the sealing ring 3 is embedded and installed in the sealing groove 9. An auxiliary sealing airbag mounting seat 12 is provided at a position between the outer ring layer 6 and the inner ring layer 7 on the inner side surface of the panel 5. The auxiliary sealing airbag mounting seats 12 are arranged in groups, and two groups of auxiliary sealing airbag mounting seats 12 are symmetrically arranged. An air avoidance groove 10 is provided on the side wall of the outer ring layer 6, and primary openings 11 are provided on both sides of the bottom surface of the air avoidance groove 10. The auxiliary sealing airbag mounting seat 12 is a circular tube structure, and a secondary opening 13 and a tertiary opening 14 are provided on the side wall of the auxiliary sealing airbag mounting seat 12. The secondary opening 13 is arranged corresponding to the primary opening 11, and the tertiary openings 14 on the same group of auxiliary sealing airbag mounting seats 12 are opposite. Correspondingly, the sealing ring 3 is a flexible rubber tube structure, and the cross-section of the sealing ring 3 when not under force is semicircular. The sealing ring 3 is connected to an auxiliary sealing airbag 18 through a connecting tube 19. The auxiliary sealing airbag 18 is embedded in the inner cavity of the auxiliary sealing airbag mounting seat 12. A force-bearing plate 21 is movably arranged in the inner cavity of the auxiliary sealing airbag mounting seat 12, and the force-bearing plates 21 in the same group are connected by a force-bearing rod 22. The force-bearing rod 22 is movably arranged in the third-level opening 14. A threaded seat 15 is integrally formed on the outer side wall of the inner ring layer 7, and a threaded hole 17 is opened on the threaded seat 15. When the fastener 4 is actually installed, the fastener 4 passes through the mounting hole on the steering wheel inner seat 1 and is screwed and positioned in the threaded hole 17 on the threaded seat 15.

[0043] A support spring 23 is fixedly glued on the force-bearing plate 21, and a support plate 16 is integrally formed on the side wall of the threaded seat 15. The end of the support spring 23 is set against the support plate 16. The spacing value between the threaded seat 15 and the auxiliary sealing airbag mounting seat 12 is greater than the thickness value of the force-bearing plate 21 and the force-bearing rod 22. When the support spring 23 is in a reset state and the support spring 23 is in contact with the support plate 16, the force-bearing plate 21 is located at the inner cavity port of the auxiliary sealing airbag mounting seat 12, which can facilitate the disassembly and assembly of the force-bearing plate 21, and the force-bearing plate 21 can be pre-positioned by the supporting action of the support spring 23 to prevent the force-bearing plate 21 from detaching from the auxiliary sealing airbag mounting seat 12.

[0044] A limiting cap groove 25 is provided at the bottom of the hexagonal wrench groove 24 on the fastener 4, and a push rod hole 26 is provided at the bottom of the limiting cap groove 25. A push rod 27 is inserted and installed in the push rod hole 26. A limiting cap 29 is integrally formed at the outer end of the push rod 27. When the limiting cap 29 is embedded in the limiting cap groove 25, the push rod 27 forms an extrusion force on the force-bearing rod 22, and at this time, the auxiliary sealing airbag 18 is pressurized, causing the gas in the auxiliary sealing airbag 18 to be squeezed into the inner cavity of the sealing ring 3. The airbag connection with a reinforced joint seal composed of the steering wheel inner seat 1, the airbag housing 2, the sealing ring 3 and the fastener 4 is provided. The invention discloses a structure in which the airbag housing 2 is composed of a panel 5, an outer ring layer 6, an inner ring layer 7 and a sealing layer 8, and an auxiliary sealing airbag mounting seat 12 is arranged on the inner side of the panel 5, so that the airbag housing 2 can squeeze the auxiliary sealing airbag 18 inside the auxiliary sealing airbag mounting seat 12 during actual installation, so that the inner cavity of the sealing ring 3 is inflated, thereby driving the sealing ring 3 to expand, thereby effectively ensuring the sealing effect between the airbag housing 2 and the airbag mounting groove, thereby preventing water from entering the interior of the airbag housing 2 and causing airbag failure, thereby improving the application reliability of the airbag.

[0045] Embodiment 2

[0046] See also Figure 4-5 and Fig.12 On the basis of the first embodiment, the inner end surface of the fastener 4 is integrally formed with an elastic rod 32, and the elastic rod 32 is arranged in a circle around the circumference of the fastener 4, and the outer side surface of the end of the elastic rod 32 is integrally formed with a clamping block 33, and the inner side surface of the end of the elastic rod 32 is integrally formed with a force block 34. When the push rod 27 is inserted into the push rod hole 26, the force block 34 and the side wall of the push rod 27 are stressed, thereby causing the elastic rod 32 to bend outward, and at this time, the clamping block 33 is engaged with the lower end surface of the threaded seat 15, and when the elastic rod 32 is in the reset state, the clamping block 33 is completely The entire fastener 4 is fully received within the area covered by the end face of the fastener 4. By arranging an elastic rod 32 on the inner end face of the fastener 4, and arranging a clamping block 33 on the outer side face of the end of the elastic rod 32, and arranging a force block 34 on the inner side face of the end of the elastic rod 32, when the push rod 27 is inserted into the push rod hole 26 to form an extrusion effect on the auxiliary sealing airbag 18, a force can also be generated on the force block 34, so that the clamping block 33 and the lower end face of the threaded seat 15 form a clamping effect, so that the fastener 4 forms a self-locking effect, thereby preventing the fastener 4 from loosening.

[0047] Embodiment 3

[0048] See also Figure 12-14On the basis of the second embodiment, a snap-fit ​​groove 28 is provided on the side wall of the limiting cap groove 25, and the snap-fit ​​groove 28 is arranged in a hook shape. A clamping block 30 is integrally formed on the outer wall of the limiting cap 29. When the clamping block 30 moves to the end of the snap-fit ​​groove 28, the limiting cap 29 is embedded in the limiting cap groove 25, and a hexagonal notch 31 is provided on the outer end surface of the limiting cap 29. By providing a hook-shaped snap-fit ​​groove 28 on the side wall of the limiting cap groove 25 and arranging the clamping block 30 on the outer wall of the limiting cap 29, a force is applied to the force plate 21 through the auxiliary sealing airbag 18, and a force is applied to the push rod 27 through the force rod 22, so that the clamping block 30 is engaged at the end of the snap-fit ​​groove 28, thereby ensuring the installation stability of the push rod 27.

[0049] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. An airbag connection mechanism with enhanced joint sealing, characterized in that: The airbag connection mechanism for enhancing the sealing of the joint comprises: A steering wheel inner seat (1), wherein an airbag mounting groove is provided on an upper side surface of the steering wheel inner seat (1), and a mounting hole is provided on a bottom surface of the airbag mounting groove; An airbag housing (2), wherein the airbag housing (2) is embedded and installed in the airbag installation groove, and an airbag body of the airbag is arranged in the inner cavity of the airbag housing (2); A sealing ring (3), wherein the sealing ring (3) is arranged on the airbag housing (2), and the sealing ring (3) is used to seal the gap between the airbag housing (2) and the airbag installation groove; A fastener (4), the fastener (4) being used to position and connect the airbag housing (2) to the steering wheel inner seat (1); The airbag housing (2) is composed of a panel (5), an outer ring layer (6), an inner ring layer (7) and a sealing layer (8); the panel (5), the outer ring layer (6) and the inner ring layer (7) are integrally formed, the panel (5) is an annular plate, the sealing layer (8) is made of a leather material, and the sealing layer (8) is fixedly glued to the outer side of the panel (5); A sealing groove (9) is provided on the outer wall of the outer ring layer (6), and the sealing ring (3) is embedded and installed in the sealing groove (9). An auxiliary sealing airbag mounting seat (12) is provided on the inner side surface of the panel (5) at a position between the outer ring layer (6) and the inner ring layer (7). The auxiliary sealing airbag mounting seats (12) are arranged in groups, and two groups of auxiliary sealing airbag mounting seats (12) are symmetrically arranged. An air avoidance groove (10) is provided on the side wall of the outer ring layer (6), and both sides of the bottom surface of the air avoidance groove (10) are provided with a primary opening (11). The auxiliary sealing airbag mounting seat (12) is in a circular tube structure, and a secondary opening (13) and a tertiary opening (14) are provided on the side wall of the auxiliary sealing airbag mounting seat (12). The secondary opening (13) is arranged corresponding to the primary opening (11), and the tertiary openings (14) on the same group of auxiliary sealing airbag mounting seats (12) are arranged correspondingly. The sealing ring (3) is a flexible rubber tube structure, and the cross section of the sealing ring (3) is semicircular when not under stress. The sealing ring (3) is connected to an auxiliary sealing airbag (18) through a connecting tube (19), and the auxiliary sealing airbag (18) is embedded in the inner cavity of the auxiliary sealing airbag mounting seat (12). A force-bearing plate (21) is movably arranged in the inner cavity of the auxiliary sealing airbag mounting seat (12), and the force-bearing plates (21) in the same group are connected by a force-bearing rod (22), and the force-bearing rod (22) is movably arranged in the third-level opening (14); A threaded seat (15) is integrally formed on the outer wall of the inner ring layer (7), and a threaded hole (17) is formed on the threaded seat (15). When the fastener (4) is actually installed, the fastener (4) passes through the installation hole on the steering wheel inner seat (1) and is screwed and positioned in the threaded hole (17) on the threaded seat (15); A support spring (23) is fixedly glued on the force-bearing plate (21), a support plate (16) is integrally formed on the side wall of the threaded seat (15), an end of the support spring (23) is arranged to abut against the support plate (16), a spacing value between the threaded seat (15) and the auxiliary sealing airbag mounting seat (12) is greater than the thickness value of the force-bearing plate (21) and the force-bearing rod (22), and when the support spring (23) is in a reset state and the support spring (23) is in contact with the support plate (16), the force-bearing plate (21) is located at the inner cavity port of the auxiliary sealing airbag mounting seat (12); A limiting cap groove (25) is provided at the bottom of the hexagonal wrench groove (24) on the fastener (4), a push rod hole (26) is provided at the bottom of the limiting cap groove (25), a push rod (27) is inserted and installed in the push rod hole (26), and a limiting cap (29) is integrally formed at the outer end of the push rod (27). When the limiting cap (29) is embedded in the limiting cap groove (25), the push rod (27) forms an extrusion force on the force-bearing rod (22), and at this time, the auxiliary sealing airbag (18) is pressurized, causing the gas in the auxiliary sealing airbag (18) to be squeezed into the inner cavity of the sealing ring (3).

2. The airbag connection mechanism with enhanced joint sealing according to claim 1, characterized in that: An elastic rod (32) is integrally formed on the inner end surface of the fastener (4), and the elastic rod (32) is arranged in a circle around the circumference of the fastener (4). A clamping block (33) is integrally formed on the outer side surface of the end of the elastic rod (32), and a force-bearing block (34) is integrally formed on the inner side surface of the end of the elastic rod (32). When the push rod (27) is inserted into the push rod hole (26), the force-bearing block (34) and the side wall of the push rod (27) are subjected to force, thereby causing the elastic rod (32) to bend outwards, and at this time, the clamping block (33) is clamped on the lower end surface of the threaded seat (15).

3. The airbag connection mechanism with enhanced joint sealing according to claim 2, characterized in that: When the elastic rod (32) is in a reset state, the clamping block (33) is completely retracted into the area covered by the end surface of the fastener (4).

4. The airbag connection mechanism with enhanced joint sealing according to claim 3, characterized in that: A snap-fit ​​groove (28) is provided on the side wall of the limiting cap groove (25), and the snap-fit ​​groove (28) is arranged in a hook shape. A snap block (30) is integrally formed on the outer side wall of the limiting cap (29). When the snap block (30) moves to the end of the snap-fit ​​groove (28), the limiting cap (29) is embedded in the limiting cap groove (25), and an inner hexagonal notch (31) is provided on the outer end surface of the limiting cap (29).

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