Seat airbag mounting structure

Abstract

The application discloses a seat airbag mounting structure which is mounted on a seat framework, the seat framework is provided with a mounting hole, the seat airbag mounting structure comprises a cover unit and a bracket unit, the cover unit comprises a first cover plate and a second cover plate, the first cover plate and the second cover plate are oppositely arranged and form a cavity space, the first cover plate is provided with a through hole, the outer surface of the first cover plate is provided with a protruding part, and the protruding part is located at the side of the through hole; the bracket unit is at least partially located inside the cover unit, and one end of the bracket unit is provided with a hook element, after the bracket unit is assembled on the cover unit and the hook element passes through the through hole, the protruding part is located on the sliding path of the hook element; wherein, the hook element and the outer surface of the first cover plate have a gap in the assembly structure. The application solves the problem that multiple interference fits in different directions need to be arranged in the prior art, which leads to difficult installation and increased production cost, and reduces the assembly difficulty of the bracket unit and the cover unit.

Description

Technical Field

[0001] This invention relates to the field of airbag technology, and more specifically to a seat airbag mounting structure. Background Technology

[0002] Seat airbags are safety airbags installed on the sides of a seat, such as airbags installed on both sides of the seat. Seat airbags are generally directly fixed to the seat frame via an airbag mounting structure. The airbag mounting structure typically includes an airbag bracket and an airbag cover. After the airbag and gas generator are installed together, the airbag, gas generator, and airbag bracket are assembled to form a semi-assembly structure. Then, the operator installs the semi-assembly structure onto the airbag cover and uses the airbag bracket to fix the airbag mounting structure to the seat frame. At this point, a hook at one end of the airbag bracket passes through the airbag cover and hooks onto the seat frame, while the other end is bolted to the seat frame, thus securing the airbag mounting structure to the seat frame.

[0003] The folded shape of the seat airbag has a certain degree of elasticity. Therefore, after the hook of the airbag support passes through the airbag cover, it is difficult to precisely design the gap between the hook of the airbag support and the outer surface of the airbag cover. If the length of the hook after passing through the airbag cover is too short, the hook will be difficult to install onto the airbag cover, and if... Figure 1 As shown, if the hook fits against the outer surface of the airbag cover after passing through it, it will be difficult to install the hook onto the seat frame. If the hook is too long after passing through the airbag cover, although it is convenient to install the hook onto the airbag cover and the seat frame, the folded airbag has a certain elasticity or is prone to denting under pressure. During vehicle operation, vibrations will cause the hook to collide with the seat frame, producing abnormal noise.

[0004] In the prior art, in order to limit the hooks of the pouch support and facilitate installation, multiple interference fits in different directions are usually set to force the support to fit with the cover plate and ensure that the hooks are exposed. This undoubtedly requires workers to spend a lot of time and effort to complete the installation of the support and the cover plate, and at the same time increases the production cost of the product.

[0005] Currently, no effective solution has been proposed to address the problem of installation difficulties and increased production costs caused by the need for multiple interference fits in different directions in existing technologies. Summary of the Invention

[0006] In view of this, embodiments of the present invention provide a seat airbag mounting structure to at least solve the problem in the prior art that requires multiple interference fits in different directions, which leads to installation difficulties and increased production costs.

[0007] The embodiments of the present invention provide the following technical solutions:

[0008] This invention provides a seat airbag mounting structure, which is mounted on a seat frame. The seat frame has mounting holes. The seat airbag mounting structure includes a cover unit and a bracket unit.

[0009] The cover unit includes a first cover plate and a second cover plate, which are arranged opposite to each other to form a cavity space. The first cover plate has a through hole, and the outer surface of the first cover plate has a protrusion, which is located on the side of the through hole.

[0010] The support unit is at least partially located inside the cover unit, and one end of the support unit is provided with a hook element. After the support unit is assembled onto the cover unit and the hook element passes through the perforation, the protrusion is located on the sliding path of the hook element, and the hook element slides over the protrusion so that the support unit and the cover unit form an assembly structure.

[0011] In the assembly structure, there is a gap between the hook element and the outer surface of the first cover plate. The gap is used to facilitate the insertion of the seat frame sidewall forming the mounting hole between the hook element and the protrusion, so that an interference fit is formed between the hook element, the seat frame sidewall and the protrusion.

[0012] Furthermore, the width of the first end of the perforation is greater than the width of the hook shank of the hook element, and the width of the second end of the perforation is greater than or equal to the width of the hook shank of the hook element. The first end and the second end of the perforation are provided with a beveled transition or an arc-shaped transition. The hook shank of the hook element is the part that is inserted into the perforation after the hook element is inserted into the perforation.

[0013] Furthermore, the first end of the protrusion along the sliding direction of the hook element is configured as a sloped or arc-shaped structure to facilitate the hook element sliding over the protrusion; and / or

[0014] The second end of the protrusion along the sliding direction of the hook element is configured as a bevel or arc surface structure so that the seat frame sidewall forming the mounting hole can be inserted between the hook element and the protrusion.

[0015] Furthermore, at least a portion of the tail of the hook element is configured as a beveled or arcuate structure, and at least a portion of the beveled or arcuate structure of the hook element abuts against the protrusion, so that the seat frame sidewall forming the mounting hole can be inserted between the hook element and the protrusion.

[0016] Furthermore, one side of the first cover plate protrudes outward to form a recess on the first cover plate, the recess matching the shape of the support unit so that the support unit is embedded in the recess.

[0017] Furthermore, a groove is provided on one side of the hook element facing the support unit;

[0018] As the hook element slides past the protrusion, the protrusion can enter the groove to limit the hook element.

[0019] Furthermore, at least one end of the hook element on the side away from the support unit is configured with an arc transition or a bevel structure to facilitate the insertion of the hook element into the perforation.

[0020] Furthermore, the cover unit also includes:

[0021] Ear protectors are disposed on the first cover plate and located on the side of the perforation. After the hook element is inserted into the perforation, the ear protectors are located on the side of the bent portion of the hook element.

[0022] The ear protector is used to separate the sidewall of the mounting hole from the hook element when the hook element is inserted into the mounting hole.

[0023] Furthermore, the cover unit also includes:

[0024] A limiting groove is provided on the inner surface of the first cover plate.

[0025] Furthermore, the support unit also includes:

[0026] A limiting member is disposed on the side of the support unit, and the limiting member is used to insert into the limiting groove when the support unit is assembled onto the cover unit.

[0027] Furthermore, the cover unit also includes:

[0028] A stop block is disposed on the inner wall of the limiting groove, and the thickness of the stop block gradually increases along the insertion direction of the limiting member.

[0029] Furthermore, the support unit also includes:

[0030] A stop hole is provided on the limiting member. When the limiting member is inserted into the limiting groove, the stop block enters the stop hole to prevent the support unit and the cover unit from moving relative to each other.

[0031] Compared with the prior art, the beneficial effects that can be achieved by at least one of the above-mentioned technical solutions adopted in the embodiments of the present invention include at least:

[0032] The present invention provides a seat airbag mounting structure. By providing a protrusion on the outer surface of the first cover plate, the length of the hook element can be appropriately increased. After the hook element is inserted into the through hole and slides past the protrusion, an interference fit is formed between the hook element and the protrusion under the action of the protrusion, so as to securely install the hook element onto the first cover plate. There will be no loosening or relative displacement between the hook element and the first cover plate. This solves the problem in the prior art that it is difficult to install and increases production costs due to the need to set multiple interference fits in different directions.

[0033] Furthermore, the protrusion creates a gap between the tail of the hook element and the outer surface of the first cover plate, allowing the sidewall of the mounting hole on the seat frame to be inserted between the hook element and the first cover plate through the gap. This facilitates the insertion and locking of the hook element into the mounting hole. After the hook element is inserted into the mounting hole, an interference fit is formed between the hook element, the sidewall of the seat frame, and the protrusion, preventing any abnormal noise between the hook element and the seat frame. This makes it easier to install the bracket unit into the cover unit. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 A cross-sectional side view of a hook passing through a perforation in a cover unit in the prior art;

[0036] Figure 2 This is a schematic diagram of the structure of the cover unit installed on the seat frame according to an embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of a seat airbag installation structure according to an embodiment of the present invention;

[0038] Figure 4 This is a cross-sectional side view of the hook element installed in the perforation according to an embodiment of the present invention;

[0039] Figure 5 This is a side view of the cover unit according to an embodiment of the present invention;

[0040] Figure 6 This is a schematic diagram of the support unit according to an embodiment of the present invention;

[0041] Figure 7 This is a schematic diagram of the assembly of protrusions of different shapes and hook elements in a seat airbag mounting structure according to an embodiment of the present invention;

[0042] Figure 8 This is a schematic diagram of different shaped protrusions in a seat airbag installation structure according to an embodiment of the present invention;

[0043] Figure 9 This is a schematic diagram of the internal structure of the cover unit in a seat airbag mounting structure according to an embodiment of the present invention;

[0044] Figure 10 This is a schematic diagram of a seat airbag installation structure with ear protectors according to an embodiment of the present invention;

[0045] Figure 11 This is a schematic diagram of a seat airbag mounting structure with a stop block according to an embodiment of the present invention;

[0046] Figure 12 This is a schematic diagram of the assembly of the stop block and stop hole in a seat airbag mounting structure according to an embodiment of the present invention.

[0047] 10' Hook;

[0048] 10. Seat frame; 11. Mounting holes;

[0049] 20. Cover unit; 21. First cover plate; 211. Perforation; 212. Protrusion; 213. Recess; 22. Second cover plate; 23. Ear protector; 24. Limiting groove; 25. Stop block;

[0050] 30. Support unit; 31. Hook element; 311. Groove; 32. Limiting element; 33. Stop hole;

[0051] 40. Gap. Detailed Implementation

[0052] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0053] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0054] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0055] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0056] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0057] The airbags installed on both sides of the seat are usually composed of a bag bracket and a cover plate. After the bag bracket and the cover plate are assembled, they form an assembly structure. Then, one end of the assembly structure is connected to the seat frame 10 by bolts, and the other end is hooked into the mounting hole 11 on the seat frame 10 by the hook 10' of the bag bracket.

[0058] Specifically, when installing the airbag, the airbag is first folded and assembled with the airbag bracket to form a semi-assembly structure. Then, the semi-assembly structure is assembled into the cover plate to form the assembly structure. At this time, the hook 10' of the airbag bracket in the semi-assembly structure extends through the perforation 211 on the cover plate to the outside of the cover plate so as to be subsequently inserted into the mounting hole 11 on the seat frame 10.

[0059] When assembling the semi-assembly structure into the cover plate, since the airbag is a soft material with a certain degree of elasticity, the bag shape formed after the airbag is folded also has a certain degree of elasticity or will dent when compressed. Therefore, when designing the hook 10' of the airbag support, the length of the hook 10' needs to be precisely set. If the hook 10' is too short, it will be difficult to insert the hook 10' into the perforation 211 on the cover plate. If the gap 40 between the hook 10' and the outer surface of the cover plate is zero, it will be difficult to assemble the hook 10' into the perforation 211. If the hook 10' is too long, it will cause the hook 10' to collide with the side wall of the mounting hole 11 after being inserted into the mounting hole 11 on the seat frame 10, resulting in abnormal noise.

[0060] Therefore, in the existing technology, multiple interference fits in different directions are usually designed near the hook 10' of the pouch support to force the pouch support to fit with the cover plate and ensure that the hook 10' is exposed. This requires workers to spend a lot of time and effort to complete the installation of the support and the cover plate, which undoubtedly increases the product cost and the workload of the workers.

[0061] like Figure 1 As shown, after the airbag bracket and cover are assembled and the hook 10' is exposed, the hook 10' needs to be inserted into the mounting hole 11 on the side wall of the seat frame 10, and the hook 10' needs to hook the side wall of the mounting hole 11. That is, the side wall of the seat frame 10 forming the mounting hole 11 needs to be inserted between the hook 10' and the outer surface of the cover. However, because the airbag is elastic after folding, the hook 10' tends to move into the inside of the cover, which will cause the hook 10' to fit against the outer surface of the cover. At this time, it is obviously difficult for the side wall of the seat frame 10 forming the mounting hole 11 to be inserted between the hook 10' and the outer surface of the cover.

[0062] Based on this, the embodiments of this specification propose a processing solution: such as Figures 2-4As shown, a seat airbag mounting structure of the present invention, by providing a protrusion 212 on the outer surface of the first cover plate 21, facilitates the installation of the hook element 31 into the through hole 211 after appropriately increasing the length of the hook element 31 in the support unit 30. Furthermore, the protrusion 212 can support the hook element 31, preventing loosening or relative movement between the support unit 30 and the cover unit 20. The support unit 30 can be installed and positioned within the cover unit 20 without the need for other interference fit structures. Additionally, in the support unit 30 and... After the cover unit 20 is assembled, the hook element 31 is held in place by the protrusion 212, and a gap 40 is formed between the hook element 31 and the outer surface of the first cover plate 21. This facilitates the insertion of the side wall of the seat frame 10 with the mounting hole 11 between the hook element 31 and the protrusion 212. This solves the problem in the prior art where the hook element 31 is inserted into the through hole 211 on the first cover plate 21, and the hook element 31 adheres to the outer surface of the first cover plate 21, making it difficult to insert the side wall of the seat frame 10 with the mounting hole 11 between the hook element 31 and the protrusion 212.

[0063] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0064] Example 1

[0065] like Figures 2-6 As shown, this embodiment of the invention provides a seat airbag mounting structure, which is mounted on a seat frame 10. The seat frame 10 has mounting holes 11. The seat airbag mounting structure includes a cover unit 20 and a bracket unit 30.

[0066] The seat frame 10 is either a front seat frame or a rear seat frame. Preferably, it is a front seat frame 10, so that the seat airbag can protect the driver and front passenger.

[0067] The bracket unit 30 is installed inside the cover unit 20, and the bracket unit 30 is used to install the rolled-up airbag.

[0068] Specifically, after the airbag is connected to the gas generator, the airbag is rolled into a bag shape and installed on the bracket unit 30 through a clamp, and then fixed inside the cover unit 20 through the bracket unit 30.

[0069] The cover unit 20 includes a first cover plate 21 and a second cover plate 22. The first cover plate 21 and the second cover plate 22 are arranged opposite to each other to form a cavity space. The first cover plate 21 has a through hole 211 and a protrusion 212 on the outer surface of the first cover plate 21. The protrusion 212 is located on the side of the through hole 211.

[0070] The first cover plate 21 and the second cover plate 22 are connected by a weakened connection. After the first cover plate 21 and the second cover plate 22 are connected, if the airbag is deployed, the first cover plate 21 and the second cover plate 22 can be separated by the impact of the airbag, so that the airbag is deployed outward.

[0071] For example, the first cover plate 21 and the second cover plate 22 are integrally injection molded or connected by snap-fit.

[0072] Preferably, both the first cover plate 21 and the second cover plate 22 are made of plastic.

[0073] Furthermore, the cavity space formed by the first cover plate 21 and the second cover plate 22 being arranged opposite each other has an opening, so that one end of the support unit 30 extends out and is bolted to the side wall of the seat frame 10.

[0074] Furthermore, a plurality of perforations 211 may be provided on the first cover plate 21 to match the number of hook elements 31 on the support unit 30.

[0075] The perforation 211 has a certain length, which allows the hook element 31 bracket to be inserted.

[0076] When the perforation 211 is arranged along the length direction of the cover unit 20, the protrusion 212 can be located in the length direction of the perforation 211 or in the width direction of the perforation 211.

[0077] Preferably, the protrusion 212 is located in the length direction of the perforation 211, that is, the protrusion 212 is in a straight line in the length direction of the cover unit 20.

[0078] In some of these embodiments, when the protrusion 212 is located in the width direction of the perforation 211, the tail of the hook element 31 is also located in the width direction of the protrusion 212.

[0079] The bracket unit 30 is located at least partially inside the cover unit 20, and one end of the bracket unit 30 is provided with a hook element 31. After the bracket unit 30 is assembled on the cover unit 20 and the hook element 31 passes through the through hole 211, the protrusion 212 is located on the sliding path of the hook element 31. The hook element 31 slides over the protrusion 212 so that the bracket unit 30 and the cover unit 20 form an assembly structure.

[0080] The hook element 31 includes a hook shank, a bent portion, and a tail.

[0081] Specifically, one end of the bracket unit 30 is installed inside the cover unit 20, and after the hook element 31 is inserted into the through hole 211, one end of the bracket unit 30 can be fixed inside the cover unit 20; the other end of the bracket unit 30 is provided with a bolt hole, and extends out of the cover unit 20 through the opening of the cavity space, and is bolted to the seat frame 10.

[0082] The longitudinal section of the support unit 30 located in the cover unit 20 is an arc-shaped structure to match the shape of the gas generator or the rolled-up airbag, so as to facilitate the fixed installation of the gas generator and the rolled-up airbag.

[0083] Specifically, after the hook element 31 of the support unit 30 passes through the through hole 211, the support unit 30 is slid so that the hook element 31 slides along the length direction of the through hole 211. Since the protrusion 212 is located in the length direction of the through hole 211, the hook element 31 will abut against the protrusion 212 and pass over the protrusion 212 until the hook element 31 slides to the bottom of the through hole 211 in the length direction, so as to realize the assembly of the support unit 30 and the cover unit 20 and form an assembly structure.

[0084] The assembly structure is the complete structure in which the support unit 30 and the cover unit 20 are assembled together.

[0085] Among them, such as Figure 4 As shown, in the length direction of the perforation 211, the length of the hook element 31 is greater than the length of the protrusion 212, so that there is a gap 40 between the hook element 31 and the outer surface of the first cover plate 21 in the assembly structure. The gap 40 is used to facilitate the insertion of the side wall of the seat frame 10 forming the mounting hole 11 between the hook element 31 and the protrusion 212, so that an interference structure is formed between the hook element 31, the side wall of the seat frame 10 and the protrusion 212.

[0086] Specifically, after the bracket unit 30 and the cover unit 20 are assembled to form an assembly structure, the assembly structure needs to be fixed to the side wall of the seat frame 10. At this time, the hook element 31 of the bracket unit 30 is inserted into the mounting hole 11 on the side wall of the seat frame 10. Since the hook element 31 slides over the other hook element 31 and part of the hook element 31 abuts against the protrusion 212, there is a gap 40 between the tail of the hook element 31 and the outer surface of the first cover plate 21. The side wall of the seat frame 10 forming the mounting hole 11 is first inserted into the gap 40, and then inserted between the hook element 31 and the protrusion 212 through the gap 40, so that an interference fit is formed between the hook element 31, the side wall of the seat frame 10 and the protrusion 212. The other end of the bracket unit 30 is connected to the side wall of the seat frame 10 by bolts, thereby realizing the assembly structure being assembled onto the seat frame 10.

[0087] In a seat airbag installation structure of the present invention, since the first cover plate 21 has a protrusion 212 on its outside, the length of the hook element 31 can be appropriately increased to facilitate the insertion of the hook element 31 into the through hole 211 and to facilitate the sliding of the hook element 31 along the through hole 211. Furthermore, the support of the protrusion 212 also allows the hook element 31 to form an interference fit with the protrusion 212, so as to avoid the bracket unit 30 and the cover unit 20 being not firmly assembled. In addition, after the hook element 31 passes the protrusion 212, there is a gap 40 between the tail of the hook element 31 and the outer surface of the first cover plate 21, which facilitates the insertion of the side wall of the seat frame 10 forming the mounting hole 11 between the protrusion 212 and the hook element 31. This solves the problem in the prior art where the length of the hook element 31 is too long or too short, and different interference fit structures are required to limit the hook element 31. This simplifies the operation steps and reduces the difficulty of installing the hook element 31 into the mounting hole 11.

[0088] Furthermore, the width of the first end of the perforation 211 is greater than the width of the hook shank of the hook element 31, and the width of the second end of the perforation 211 is greater than or equal to the width of the hook shank of the hook element 31. The first end and the second end of the perforation 211 are provided with a beveled transition or an arc-shaped transition. The hook shank of the hook element 31 is the part of the hook element 31 that is inserted into the perforation 211 and then snaps into the perforation 211.

[0089] Specifically, when the hook element 31 is inserted into the perforation 211, it is first inserted into the first end of the perforation 211, and then after being inserted to a sufficient length, the hook element 31 is slid towards the second end of the perforation 211 until the hook shank of the hook element 31 slides to the end of the second end of the perforation 211.

[0090] Specifically, by setting the width of the first end of the perforation 211 to be greater than the width of the hook handle and tail of the hook element 31, the hook element 31 is facilitated to be inserted. After the hook element 31 is inserted into the perforation 211, the hook element 31 is slid to the second end of the perforation 211, and the width of the second end of the perforation 211 is slightly greater than or equal to the width of the hook handle of the hook element 31, thereby achieving the initial positioning of the hook element 31.

[0091] Preferably, the first end of the perforation 211 is set as a rectangular structure, and its width is greater than the width of the hook shank of the hook element 31. The second end of the perforation 211 is set as a long strip structure, and its width is equal to the width of the hook shank of the hook element 31.

[0092] Furthermore, such as Figures 7-8 As shown, the first end of the protrusion 212 along the sliding direction of the hook element 31 is configured as a slope or arc surface structure so that the hook element 31 can slide over the protrusion 212.

[0093] Specifically, when the protrusion 212 is located in the length direction of the perforation 211, the side of the protrusion 212 near the perforation 211 is set as a bevel or arc surface structure.

[0094] Furthermore, the second end of the protrusion 212 along the sliding direction of the hook element 31 is configured as a bevel or arc surface structure so that the side wall of the seat frame 10 forming the mounting hole 11 can be inserted between the hook element 31 and the protrusion 212.

[0095] Specifically, when the protrusion 212 is located in the length direction of the perforation 211, the side of the protrusion 212 away from the perforation 211 is configured as a shoe upper or curved surface structure.

[0096] Preferably, the two edges of the side surface of the protrusion 212 away from the first cover plate 21 are both set as bevels or arcs, so that the hook element 31 can slide over the protrusion 212, and the side wall of the seat frame 10 forming the mounting hole 11 can be inserted between the hook element 31 and the protrusion 212.

[0097] like Figure 8 As shown, the longitudinal section of the protrusion 212 can be set as a rectangle, trapezoid, triangle, semicircle, a combination of rectangle and semicircle, a combination of rectangle and trapezoid, a combination of rectangle and triangle, etc.

[0098] Furthermore, at least a portion of the tail of the hook element 31 is configured as a beveled or arcuate structure, and at least a portion of the beveled or arcuate structure of the hook element 31 abuts against the protrusion 212 so that the side wall of the seat frame 10 forming the mounting hole 11 can be inserted between the hook element 31 and the protrusion 212.

[0099] In this design, by setting at least a portion of the tail of the hook element 31 as a sloped or arc-shaped structure, the hook element 31 can slide over the protrusion 212, thereby reducing the difficulty for the hook element 31 to pass over the protrusion 212.

[0100] When at least a portion of the inclined or curved structure of the hook element 31 abuts against the protrusion 212, a gap is formed between the portion of the tail of the hook element 31 near the inclined or curved structure and the protrusion 212. Thus, when the side wall of the seat frame 10 forming the mounting hole 11 is ready to be inserted between the hook element 31 and the protrusion 212, it can first enter the gap 40 between the tail of the hook element 31 and the first cover plate 21, then enter the gap, and finally the side wall of the seat frame 10 is squeezed open through the gap and enters between the hook element 31 and the protrusion 212.

[0101] Furthermore, one side of the first cover plate 21 protrudes outward to form a recess 213 on the first cover plate 21. The recess 213 matches the shape of the support unit 30 so that the support unit 30 is embedded in the recess 213. This avoids the situation where the shape of the support unit 30 does not match the cover unit 20 after the support unit 30 is installed in the cover unit 20, resulting in a lot of useless space inside the cover unit 20.

[0102] For example, when the longitudinal section of the support unit 30 is arc-shaped, the longitudinal section of the concave portion 213 is also arc-shaped, so that the support does not occupy the main cavity space of the cover unit 20, so that when the airbag is folded into a larger bag shape, the bag shape can be smoothly placed into the cover space.

[0103] By placing the support unit 30 into the recess 213, the present invention saves the cavity space of the cover unit 20, increases the internal space of the cover unit 20 for accommodating the airbag, and reduces the size requirements for the foldable airbag.

[0104] In some embodiments, the tail of the hook element 31 is provided with a groove 311 on one side facing the support unit 30, and when the hook element 31 slides past the protrusion 212, the protrusion 212 can enter the groove 311 to limit the hook element 31.

[0105] Preferably, the shape of the groove 311 matches the shape of the protrusion 212.

[0106] After the protrusion 212 enters the groove 311, it can limit the hook element 31, thereby preventing the hook element 31 from displacing along the length direction of the through hole 211, and further increasing the stability of the assembly of the hook element 31 and the cover unit 20.

[0107] In some embodiments, at least one end of the hook element 31 on the side away from the support unit 30 is provided with an arc transition or bevel structure to facilitate the insertion of the hook element 31 into the through hole 211.

[0108] The side of the hook element 31 away from the support unit 30 includes a partially bent portion and a tail portion of the hook element 31. By setting at least one end of the hook element 31 away from the support unit 30 as an arc transition or a bevel structure, the width of the side of the hook element 31 away from the support unit 30 is reduced, so that the hook element 31 can be inserted into the through hole 211.

[0109] In this embodiment of the invention, a protrusion 212 is added to the outside of the first cover plate 21 to support the hook element 31, thereby ensuring the gap 40 between the hook element 31 and the first cover plate 21. During the installation of the airbag into the seat frame 10, the protrusion 212 can be squeezed by the hook element 31 to cause the first cover plate 21 to be recessed, so that there is an interference fit between the hook element 31 and the protrusion 212.

[0110] Example 2

[0111] like Figure 9 As shown, this embodiment is a modified embodiment of embodiment 1. The difference between this embodiment and embodiment 1 is that the cover unit 20 further includes a protective ear 23. The protective ear 23 is disposed on the first cover plate 21 and located on the side of the through hole 211. After the hook element 31 is inserted into the through hole 211, the protective ear 23 is located on the side of the bent part of the hook element 31. The protective ear 23 is used to separate the side wall of the mounting hole 11 and the hook element 31 when the hook element 31 is inserted into the mounting hole 11.

[0112] Among them, the ear protectors 23 are made of non-metallic materials, such as plastic.

[0113] The width of the mounting hole 11 is usually greater than the width of the hook element 31 so that the hook element 31 can be inserted into the mounting hole 11. Since the hook element 31 is made of metal and the side wall of the seat frame 10 is also made of metal, if the hook element 31 moves in the width direction of the mounting hole 11, the hook element 31 will expand with the side wall of the mounting hole 11, thereby generating noise. In this embodiment, by using the ear protector 23 to separate the hook element 31 from the side wall of the mounting hole 11, it is possible to avoid the hook element 31 from colliding with the side wall of the mounting hole 11. Since the ear protector 23 is made of plastic, even if the ear protector 23 collides with the side wall of the mounting hole 11, the sound generated is small and will not affect the occupants.

[0114] Preferably, the width of the ear protector 23 is equal to the width of the mounting hole 11, or at least a portion of the width of the ear protector 23 is equal to the width of the mounting hole 11, so that during installation, the portion of the ear protector 23 with the width of the mounting hole 11 is inserted into the mounting hole 11 to avoid collision between the ear protector 23 and the side wall of the mounting hole 11.

[0115] Since the ear protector 23 is made of non-metallic material, even if the width of the ear protector 23 is equal to the width of the mounting hole 11, the ear protector 23 can still be installed into the mounting hole 11 to achieve interference fit between the ear protector 23 and the mounting hole 11.

[0116] The inner width of the ear protector 23 is close to the width of the hook element 31, such that the inner width of the ear protector 23 is greater than, equal to or less than the width of the hook element 31.

[0117] When the internal width of the ear protector 23 is less than the width of the hook element 31, the hook element 31 is inserted into the ear protector 23 and can open the ear protector 23.

[0118] Preferably, the internal width of the ear protector 23 is equal to the width of the hook element 31.

[0119] In some embodiments, the ear protector 23 may be configured as an inverted U-shaped structure or an inverted triangular structure and mounted on the second end of the perforation 211. When the hook element 31 is inserted and slides to the second end of the perforation 211, it is located at both ends of the bent portion of the hook element 31 to separate the side wall of the mounting hole 11 and the hook element 31, so as to prevent the hook element 31 from shaking and making noise in the mounting hole 11.

[0120] In some embodiments, the ear protector 23 includes two sub-ear protectors 23, which are respectively disposed on both sides of the second end of the perforation 211.

[0121] In this embodiment of the invention, the ear protectors 23 are made of non-metallic material and are placed on both sides of the bent portion of the hook element 31, thereby separating the hook element 31 from the side wall of the mounting hole 11 and preventing collisions between the hook element 31 and the side wall of the mounting hole 11 that could cause abnormal noises.

[0122] Example 3

[0123] This embodiment is a modified embodiment of embodiment 1 or embodiment 2. The difference between this embodiment and embodiment 1 or embodiment 2 is that the structures of the cover unit 20 and the support unit 30 are different.

[0124] The cover unit 20 also includes a limiting groove 24, which is disposed on the inner surface of the first cover plate 21;

[0125] The bracket unit 30 also includes a limiting member 32, which is disposed on the side of the bracket unit 30 and is used to insert into the limiting groove 24 when the bracket unit 30 is assembled onto the cover unit 20.

[0126] When the hook element 31 is inserted into the second end of the through hole 211, the limiting member 32 is also inserted into the limiting groove 24 at the same time, and there is an interference fit between the limiting member 32 and the limiting groove 24.

[0127] Specifically, the limiting groove 24 protrudes from the inner surface of the first cover plate 21 to facilitate the insertion of the limiting member 32 into the limiting groove 24.

[0128] The limiting member 32 and the limiting groove 24 are used to further limit the bracket unit 30 into the cover unit 20.

[0129] The limiting groove 24 can be a rectangular groove structure, and the limiting member 32 can also be a rectangular plate structure.

[0130] The limiting groove 24 can also be a vertical groove, and the limiting component 32 can also be a vertical plate structure.

[0131] Furthermore, such as Figures 11-12 As shown, the cover unit 20 also includes a stop block 25, which is disposed on the inner wall of the limiting groove 24, and the thickness of the stop block 25 gradually increases along the insertion direction of the limiting member 32; the support unit 30 also includes a stop hole 33, which is opened on the limiting member 32. When the limiting member 32 is inserted into the limiting groove 24, the stop block 25 enters the stop hole 33 to prevent the support unit 30 and the cover unit 20 from moving relative to each other.

[0132] Specifically, the stop block 25 can be configured as a right-angled triangular prism.

[0133] The embodiments of the present invention can limit the support unit 30 within the cover unit 20 by using the limiting member 32, the limiting groove 24, the stop block 25 and the stop hole 33, thereby preventing relative displacement between the support unit 30 and the cover unit 20.

[0134] In this specification, the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, for the product embodiments described later, since they correspond to the methods, the descriptions are relatively simple, and the relevant parts can be referred to the descriptions in the system embodiments.

[0135] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A seat airbag mounting structure, mounted on a seat frame, wherein the seat frame has mounting holes, the seat airbag mounting structure comprising a cover unit and a bracket unit, characterized in that, The cover unit includes a first cover plate and a second cover plate, which are arranged opposite to each other to form a cavity space. The first cover plate has a through hole, and the outer surface of the first cover plate has a protrusion, which is located on the side of the through hole. The support unit is at least partially located inside the cover unit, and one end of the support unit is provided with a hook element. After the support unit is assembled onto the cover unit and the hook element passes through the perforation, the protrusion is located on the sliding path of the hook element, and the hook element slides over the protrusion so that the support unit and the cover unit form an assembly structure. When the bracket unit and the cover unit are assembled, the hook element is held in place by the protrusion. In the assembly structure, there is a gap between the hook element and the outer surface of the first cover plate. The gap is used to facilitate the insertion of the seat frame sidewall that forms the mounting hole between the hook element and the protrusion. The protrusion can be squeezed into the first cover plate by the action of the hook element, so that an interference fit is formed between the hook element, the seat frame sidewall and the protrusion.

2. The seat airbag mounting structure according to claim 1, characterized in that, The width of the first end of the perforation is greater than the width of the hook shank of the hook element, and the width of the second end of the perforation is greater than or equal to the width of the hook shank of the hook element. The first end and the second end of the perforation are provided with a beveled transition or an arc transition. The hook shank of the hook element is the part that is inserted into the perforation after the hook element is inserted into the perforation.

3. The seat airbag mounting structure according to claim 2, characterized in that, The first end of the protrusion along the sliding direction of the hook element is configured as a sloped or arc-shaped structure to facilitate the hook element sliding over the protrusion; and / or The second end of the protrusion along the sliding direction of the hook element is configured as a bevel or arc surface structure so that the seat frame sidewall forming the mounting hole can be inserted between the hook element and the protrusion.

4. The seat airbag mounting structure according to claim 3, characterized in that, At least a portion of the tail of the hook element is configured as a beveled or arcuate structure, and the beveled or arcuate structure of the hook element at least partially abuts against the protrusion so that the seat frame sidewall forming the mounting hole can be inserted between the hook element and the protrusion.

5. The seat airbag mounting structure according to claim 1, characterized in that, One side of the first cover plate protrudes outward to form a recess on the first cover plate, the recess matching the shape of the support unit so that the support unit is embedded in the recess.

6. The seat airbag mounting structure according to claim 1, characterized in that, The tail of the hook element is provided with a groove on one side facing the support unit; As the hook element slides past the protrusion, the protrusion can enter the groove to limit the hook element.

7. The seat airbag mounting structure according to claim 6, characterized in that, At least one end of the hook element on the side away from the support unit is configured with an arc transition or a bevel structure to facilitate insertion of the hook element into the perforation.

8. The seat airbag mounting structure according to any one of claims 1 to 7, characterized in that, The cover unit also includes: Ear protectors are provided on the first cover plate and located on the side of the perforation. After the hook element is inserted into the perforation, the ear protectors are located on both sides of the bent portion of the hook element. The ear protector is used to separate the sidewall of the mounting hole from the hook element when the hook element is inserted into the mounting hole.

9. The seat airbag mounting structure according to claim 8, characterized in that, The cover unit also includes: A limiting groove is provided on the inner surface of the first cover plate; The support unit also includes: A limiting member is disposed on the side of the support unit, and the limiting member is used to insert into the limiting groove when the support unit is assembled onto the cover unit.

10. The seat airbag mounting structure according to claim 9, characterized in that, The cover unit also includes: A stop block is disposed on the inner wall of the limiting groove, and the thickness of the stop block gradually increases along the insertion direction of the limiting member. The support unit also includes: A stop hole is provided on the limiting member. When the limiting member is inserted into the limiting groove, the stop block enters the stop hole to prevent the support unit and the cover unit from moving relative to each other.

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