Driver airbag housing

Abstract

The present invention discloses a driver airbag housing, which comprises a cover plate and a bottom shell. The cover plate is arranged above the bottom shell. The cover plate includes a cover body and a first connecting member extending downward from the bottom surface of the cover body. The bottom shell includes a side wall and a bottom plate. The side wall extends upward from the edge of the bottom plate. A second connecting member is arranged on the outer side of the side wall. The first connecting member is in close fit with the second connecting member for connecting the cover plate and the bottom shell. In the driver airbag housing of the present invention, the side wall of the cover plate is omitted, and the first connecting member directly extends downward from the bottom surface of the cover body and is in close fit with the second connecting member of the bottom shell. Since the side wall of the cover plate is reduced, materials are saved and the cost is reduced; and due to the simplification of the cover plate structure, the injection molding quality of the cover plate can be improved; in addition, the first connecting member is in close fit with the second connecting member, reducing the generation of vibration and noise.

Description

Technical Field

[0001] The present invention relates to the technical field of airbags, and particularly to a driver airbag housing. Background Art

[0002] A driver airbag housing generally includes a cover plate 1' and a bottom shell 2'. The cover plate 1' includes a first wall surface 11', and the bottom shell 2' includes a second wall surface 21'. The first wall surface 11' covers the outside of the second wall surface 21'. A clamping hole 111' is formed on the first wall surface 11', and a clamping buckle 211' is provided on the second wall surface 21'. The clamping buckle 211' is inserted into the clamping hole 111' to realize the installation of the cover plate 1' and the bottom shell 2'.

[0003] The existing driver airbag housing has the following deficiencies:

[0004] 1. Since there is an overlap between the first wall surface 11' and the second wall surface 21', a large amount of material is wasted, resulting in an increase in cost;

[0005] 2. It is difficult for the cover plate 1' to ensure the injection molding quality of both the cover body and the first wall surface 11 at the same time;

[0006] 3. Since there is a gap between the clamping buckle 211' and the clamping hole 111', vibration and noise are likely to occur;

[0007] 4. Since the upper edge of the second wall surface 21' does not completely fit with the cover plate 1', vibration and noise are likely to occur.

[0008] Therefore, it is necessary to design a driver airbag housing that reduces material usage, improves injection molding quality, and reduces vibration and noise. Summary of the Invention

[0009] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a driver airbag housing that reduces material usage, improves injection molding quality, and reduces vibration and noise.

[0010] The technical solution of the present invention provides a driver airbag housing, including a cover plate and a bottom shell. The cover plate is arranged above the bottom shell. The cover plate includes a cover body and a first connecting member extending downward from the bottom surface of the cover body. The bottom shell includes a side wall and a bottom plate. The side wall extends upward from the edge of the bottom plate. A second connecting member is provided on the outer side of the side wall. The first connecting member and the second connecting member are closely matched to connect the cover plate and the bottom shell.

[0011] Further, the first connecting member includes a plugging portion and a welding portion, and the second connecting member includes a jack. After the plugging portion is plugged into the jack, the welding portion is welded to the second connecting member.

[0012] Further, the first connecting member further includes an extension portion that extends from the bottom surface of the cover body toward the bottom case, the insertion portion is disposed on the outer side surface of the extension portion, and the welding portion is disposed at the lower end of the extension portion.

[0013] Further, the insertion portion protrudes outward in a direction perpendicular to the extending direction of the extension portion.

[0014] Further, the insertion portion includes a first inclined guiding surface that inclines from the inside to the outside toward the direction of the cover plate.

[0015] Further, the edge of the welded portion after welding extends beyond the edge of the extension portion, forming a welded rear portion in the shape of a mushroom head.

[0016] Further, the welded portion is a front welded portion before welding, and the cross section of the front welded portion is the same as the cross section of the extension portion.

[0017] Further, the second connecting member is a socket, and an access hole and the insertion hole are formed in the socket. The insertion portion enters the socket through the access hole and then is inserted into the insertion hole.

[0018] Further, the socket further includes an exit hole and a welding edge. After the welding portion enters the socket from the access hole, it exits from the exit hole and is welded to the welding edge.

[0019] Further, the access hole is formed in the top surface of the socket, and the top surface is inclined downward from the inside to the outside.

[0020] After adopting the above technical solution, the following beneficial effects are achieved:

[0021] In the driver airbag housing of the present invention, the side wall of the cover plate is omitted, the first connecting member directly extends downward from the bottom surface of the cover body, and is closely matched with the second connecting member of the bottom case. Since the side wall of the cover plate is reduced, materials are saved and the cost is reduced; and since the structure of the cover plate is simplified, the injection molding quality of the cover plate can be improved; in addition, the first connecting member and the second connecting member are closely matched, reducing the generation of vibration and noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Referring to the drawings, the disclosure of the present invention will become more readily understood. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings:

[0023] Figure 1 is a perspective view of an existing driver airbag housing;

[0024] Figure 2is a partial cross-sectional view of an existing driver airbag housing;

[0025] Figure 3 is Figure 2 a partial enlarged view of location A in

[0026] Figure 4 is a perspective view of a driver airbag housing in an embodiment of the present invention;

[0027] Figure 5 is a schematic top view of a cover plate of a driver airbag housing in an embodiment of the present invention;

[0028] Figure 6 is a schematic bottom view of a cover plate of a driver airbag housing in an embodiment of the present invention;

[0029] Figure 7 is a partial enlarged view of the structure of a first connecting member after welding in an embodiment of the present invention;

[0030] Figure 8 is a schematic view of a bottom shell of a driver airbag housing in an embodiment of the present invention;

[0031] Figure 9 is a partial enlarged view of a second connecting member in an embodiment of the present invention;

[0032] Figure 10 is a partial enlarged view of the cooperation of a first connecting member and a second connecting member in an embodiment of the present invention.

[0033] Figure 11 is a partial enlarged view of the structure of a first connecting member before welding in an embodiment of the present invention.

[0034] Correspondence table of reference numerals:

[0035] Cover plate 1': First wall surface 11', Card hole 111';

[0036] Bottom shell 2': Second wall surface 21', Snap 211';

[0037] Cover plate 1: Cover body 11, First connecting member 12, Welding front part 120, Insertion part 121, Welding part 122, Extension part 123, First inclined guiding surface 1211;

[0038] Bottom shell 2: Side wall 21, Bottom plate 22, Second connecting member 23, Insertion hole 231, Entrance hole 232, Through hole 233, Welding edge 234, Top surface 235. Detailed implementation manners

[0039] The following further illustrates the detailed implementation manners of the present invention in conjunction with the accompanying drawings.

[0040] It is easy to understand that according to the technical solution of the present invention, without changing the essence of the present invention, those of ordinary skill in the art can mutually replace various structural forms and implementation manners. Therefore, the following specific embodiments and the accompanying drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as all of the present invention or as a limitation or restriction on the technical solution of the invention.

[0041] The orientation terms such as up, down, left, right, front, back, front side, back side, top, bottom, etc. mentioned or possibly mentioned in this specification are defined relative to the structures shown in the respective drawings. They are relative concepts, and thus may change correspondingly according to their different positions and different usage states. Therefore, these or other orientation terms should not be interpreted as restrictive terms.

[0042] In an embodiment of the present invention, as Figure 4 and Figure 10 shown, the driver airbag housing includes a cover plate 1 and a bottom case 2. The cover plate 1 is disposed above the bottom case 2. The cover plate 1 includes a cover body 11 and a first connecting member 12 extending downward from the bottom surface of the cover body 11. The bottom case 2 includes a side wall 21 and a bottom plate 22. The side wall 21 extends upward from the edge of the bottom plate 22. A second connecting member 23 is provided on the outer side of the side wall 21. The first connecting member 12 and the second connecting member 23 are closely fitted to connect the cover plate 1 and the bottom case 2.

[0043] Specifically, as Figure 6 shown, the cover body 11 is in a dome shape, the cover body 11 bulges upward and covers the upper part of the bottom case 2. One end of the first connecting member 12 is directly connected to the bottom surface of the cover body 11, and the other end extends downward toward the bottom case 2.

[0044] As Figure 8 described, the bottom case 2 includes a side wall 21 and a bottom plate 22. The side wall 21 is a closed cylindrical structure surrounding the bottom plate 22. The bottom plate 22 is used to install the gas generator of the airbag. The cover body 11 is disposed on the upper edge of the side wall 21. The cavity formed by the cover body 11, the side wall 21 and the bottom plate 22 is used to install the airbag of the airbag. When the airbag is inflated, the airbag will push open the cover body 11 and deploy from the bottom case 2.

[0045] The second connecting member 23 is disposed on the outer side surface of the side wall 21. A plurality of second connecting members 23 are spaced apart in a circle on the outer side surface of the side wall 21, and correspondingly, a plurality of first connecting members 12 are also spaced apart. The first connecting member 12 and the second connecting member 23 are closely fitted to connect the cover plate 1 and the bottom case 2, and enclose the airbag in the cavity. When the airbag is deployed, the tear line on the cover body 11 is opened, the airbag is inflated and ejected, and the first connecting member 12 and the second connecting member 23 always remain connected to prevent the cover body 11 from detaching from the bottom case 2 and causing harm to the passengers.

[0046] In this embodiment, since the cover plate 1 omits the first side wall 11' compared with the existing cover plate 1' in Figure 2 , some materials are saved, which is beneficial to cost reduction.

[0047] Moreover, since the cover plate 1 has no side wall structure, the quality after injection molding is easy to improve.

[0048] In addition, due to the tight fit between the first connecting member 12 and the second connecting member 23, there is no gap between them, reducing the vibration and noise between the cover plate 1 and the bottom case 2.

[0049] Furthermore, as Figures 6 - 9 shown, the first connecting member 12 includes a plugging portion 121 and a welding portion 122, and the second connecting member 23 includes a jack 231. After the plugging portion 121 is plugged into the jack 231, the welding portion 122 is welded to the second connecting member 23.

[0050] Specifically, the first connecting member 12 is a flat plate member structure. Two rows of plugging portions 121 are provided on the wider surface facing the outside of the housing, and two plugging portions 121 are also provided on the two narrower side surfaces.

[0051] As Figure 9 shown, the jacks 231 of the corresponding second connecting member 23 are also provided in three groups, with two rows in each group.

[0052] The plugging portion 121 is inserted into the jack 231 to achieve the positioning connection between the first connecting member 12 and the second connecting member 23.

[0053] The first connecting member 12 further includes a welding portion 122. After the first connecting member 12 and the second connecting member 23 are positioned and connected, the welding portion 122 is welded to the second connecting member 23 to achieve the fixed connection between the first connecting member 12 and the second connecting member 23.

[0054] Optionally, the plugging portion 121 can also be one row, or more than two rows. The plugging portion 121 can also be arranged on the wider surface facing the inside of the housing, or on any one of the four side surfaces, or a combination of any surfaces.

[0055] Furthermore, as Figure 7 shown, the first connecting member 12 further includes an extension portion 123. The extension portion 123 extends from the bottom surface of the cover body 11 towards the bottom case 2. The plugging portion 121 is arranged on the outer side surface of the extension portion 123, and the welding portion 122 is arranged at the lower end of the extension portion 123.

[0056] Specifically, the extension portion 123 is a flat rectangular plate. The plugging portion 121 is arranged on the wider surface facing the outside of the housing and the two narrower side surfaces of the extension portion 123, and the welding portion 122 is arranged at the lower end of the extension portion 123. Among them, Figure 7It is an inverted schematic diagram of the first connecting member 12. Figure 7 Above in is the lower end of the extension portion 123.

[0057] Furthermore, as Figure 7 shown, the insertion portion 121 protrudes outward along a direction perpendicular to the extension direction of the extension portion 123.

[0058] Specifically, Figure 7 in , the extension portion 123 extends in the up and down direction, and the insertion portion 121 protrudes outward along the horizontal direction perpendicular to the up and down direction. During the insertion process of the first connecting member 12 and the second connecting member 23, the insertion portion 121 is first squeezed into the second connecting member 23, and the first connecting member 12 undergoes elastic deformation. When the insertion portion 121 is inserted into the insertion hole 231, the first connecting member 12 returns to the state before deformation.

[0059] Furthermore, as Figure 7 shown, the insertion portion 121 includes a first inclined guiding surface 1211, and the first inclined guiding surface 1211 inclines from the inside to the outside towards the direction of the cover plate 1.

[0060] The first inclined guiding surface 1211 is used to play a guiding role during the process of inserting into the insertion hole 231, so as to facilitate the insertion portion 121 to smoothly insert into the insertion hole 231.

[0061] Furthermore, as Figure 7 shown, the edge of the welded portion 122 after welding exceeds the edge of the extension portion 123, forming a welded rear portion in the shape of a mushroom head. The edge of the upper end surface of the welded portion 122 exceeds the lower edge of the extension portion 123, and the exceeded part is the welding surface of the welded portion 122 and the second connecting member 23.

[0062] As Figure 11 shown, Figure 7 in , the welded portion 122 is the welded front portion 120 before welding, and the cross-section of the welded front portion 120 is the same as that of the extension portion 123. The height of the welded front portion 120 is greater than the height of the welded rear portion, and the cross-sectional area of the welded front portion 120 is smaller than the cross-sectional area of the welded rear portion.

[0063] Specifically, as Figure 9 shown, the second connecting member 23 is provided with a passing hole 233 and a welding edge 234. After the welded portion 122 enters the second connecting member 23 from the entering hole 232, it then passes through the passing hole 233 and is welded to the welding edge 234.

[0064] Before welding, as Figure 11 shown, the welded front portion 120 is slightly smaller in size and area than the passing hole 233, and it is easy to penetrate into and out of the passing hole 233. After passing through the passing hole 233, the welded front portion 120 exceeds the welding edge 234 by a certain amount of height, and welding is carried out.

[0065] After welding, as Figure 10 shown, due to the increase in the cross-sectional area of the welding part 122 and the decrease in height, a mushroom head shape of the welded rear part ( Figure 7 the welding part 122 in

[0066] is formed). Figures 9 - 11 Further, as

[0067] shown, the second connecting member 23 is a socket, and an access hole 232 and a jack 231 are provided on the socket. The plugging part 121 enters the socket through the access hole 232 and then is plugged into the jack 231.

[0068] Specifically, the second connecting member 23 is a hollow six-sided sleeve structure, and one relatively wide inner side surface thereof is attached to the side wall 21. Two long strip-shaped jacks 231 are provided on another relatively wide outer side surface, and two smaller jacks 231 are also provided on each of the other two side surfaces. An access hole 232 is provided on the top surface 235 of the second connecting member 23, and the top surface 235 is inclined downward from the inside to the outside. A through hole 233 is provided on the bottom surface opposite to the top surface 235, and the outer edge of the through hole 233 is a welding edge 234.

[0069] In the driver airbag housing of the present invention, the side wall of the cover plate is omitted, the first connecting member directly extends downward from the bottom surface of the cover body, and is closely matched with the second connecting member of the bottom case. Since the side wall of the cover plate is reduced, materials are saved and the cost is reduced; and due to the simplification of the cover plate structure, the injection molding quality of the cover plate can be improved; in addition, the first connecting member and the second connecting member are closely matched, reducing the generation of vibration and noise.

[0070] The above are only the principles and preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, based on the principles of the present invention, several other variations can also be made, which should also be regarded as the protection scope of the present invention.

Claims

1. A driver airbag housing, comprising a cover plate and a bottom shell, the cover plate being disposed above the bottom shell, characterized in that, The cover plate includes a cover body and a first connecting member extending downward from the bottom surface of the cover body. The bottom case includes a side wall and a bottom plate. The side wall extends upward from the edge of the bottom plate. A second connecting member is provided on the outer side of the side wall. The first connecting member and the second connecting member are closely fitted to connect the cover plate and the bottom case. The first connecting member includes a plugging portion and a welding portion. The second connecting member includes a socket hole. After the plugging portion is plugged into the socket hole, the welding portion is welded to the second connecting member. The first connecting member is a flat plate member structure. The first connecting member further includes an extension portion which is a flat rectangular plate. The plugging portion is arranged on the wider surface and two narrower side surfaces of the extension portion facing the outside of the housing. The extension portion extends from the bottom surface of the cover body toward the bottom case. The welding portion is arranged at the lower end of the extension portion. The second connecting member is a hollow six-sided socket. An access hole, the socket hole, an exit hole and a welding edge are formed on the socket. A wider inner side surface of the socket is attached to the side wall. The long strip-shaped socket hole is formed on another wider outer side surface. Smaller socket holes are formed on the other two narrower side surfaces respectively. The access hole is formed on the top surface of the socket. The top surface is inclined downward from the inside to the outside. The exit hole is formed on the bottom surface of the socket. The welding edge is located at the edge of the exit hole. The plugging portion enters the socket through the access hole and then is plugged into the socket hole. After the welding portion enters the socket through the access hole, it passes through the exit hole and is welded to the welding edge.

2. The driver airbag housing according to claim 1, characterized in that, The plugging portion protrudes outward in a direction perpendicular to the extending direction of the extension portion.

3. The driver airbag housing according to claim 2, characterized in that, The plugging portion includes a first inclined guiding surface which is inclined from the inside to the outside toward the direction of the cover plate.

4. The driver airbag housing according to claim 1, characterized in that, The edge of the welded welding portion extends beyond the edge of the extension portion, forming a welded rear portion in the shape of a mushroom head.

5. The driver airbag housing according to claim 1, characterized in that, Before welding, the welding portion is a welding front portion. The cross section of the welding front portion is the same as that of the extension portion.

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