Airbag cover and method for producing an airbag cover

Abstract

The application provides an air bag protection shell and a manufacturing method thereof. The air bag protection shell comprises a side frame, a back plate and an air bag assembly. The side frame is arranged around the periphery of the back plate. The air bag assembly comprises a buffer part and a connecting part which are connected to each other. The buffer part comprises a closed air bag cavity. The connecting part is provided with a positioning hole. The air bag assembly is fixed to the side frame through the connecting part. Compared with the prior art, the air bag is clamped and fixed by a clamp, which easily causes the air bag to deform and produces unqualified protection shell products. In the air bag protection shell provided by the application, the positioning hole is arranged on the connecting part of the air bag assembly. The protruding part of the mold core is inserted into the positioning hole, so that the air bag assembly can be fixed on the mold core in the original shape for production. The side frame is injection molded and connected to the air bag assembly. The air bag assembly still does not deform, so that the qualified air bag protection shell can be successfully produced, and the air bag protection shell production failure rate is greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic product accessory, in particular to an air bag protective shell and a manufacturing method thereof. BACKGROUND

[0002] With the rapid development of science and technology, the prices of electronic devices such as mobile phones and tablet computers are becoming more and more expensive. In order to protect mobile phones and tablet computers from being damaged by falling, users generally use drop-proof protective shells for electronic devices. Since the display screen of an electronic device is prone to breakage and the side of the electronic device is prone to indentation, the drop-proof structure of the drop-proof protective shell can prevent the display screen of the electronic device from being broken by falling and the side of the electronic device from being indented by accidental knocking.

[0003] The existing drop-proof protective shell is generally composed of a back plate, a side frame and an air bag. The side frame and the air bag are fixedly connected by injection molding, so that the air bag is fixed on the side frame. The side frame surrounds the periphery of the back plate and is fixedly connected with the back plate. In order to mass-produce the drop-proof protective shell, machines are generally used in the production line during assembly. When the air bag and the side frame are fixedly connected, the air bag is clamped and fixed by a clamp, and then liquid material used to make the side frame is injected around the air bag, and the side frame with the fixed air bag is obtained.

[0004] Since the air bag can be deformed, the clamp is prone to deform the air bag when clamping and fixing the air bag. After the side frame is fixed to the deformed air bag by injection molding, the clamp is separated from the air bag. Since the deformed air bag is kept and fixed in the deformed state by the side frame, the air bag becomes ugly. The side frame with the deformed air bag makes the drop-proof protective shell an unqualified product, which increases the failure rate of producing the drop-proof protective shell. SUMMARY

[0005] Therefore, the present application provides an air bag protective shell and a manufacturing method thereof.

[0006] The air bag protective shell provided by the present application comprises a side frame, a back plate and an air bag assembly. The side frame surrounds the periphery of the back plate to form a containing cavity. The side frame is provided with a mounting position. The air bag assembly comprises a buffer part and a connecting part. The connecting part is connected to the periphery of the buffer part. The buffer part comprises a closed air bag cavity. The connecting part is provided with a positioning hole. The air bag assembly is arranged in the mounting position, and the connecting part is connected to the side frame.

[0007] In an embodiment, the positioning hole is two, and the two positioning holes are respectively arranged near the opposite ends of the buffer part.

[0008] In an embodiment, the mounting position is a mounting hole penetrating through opposite sides of the side frame, a mounting groove is recessed on a side wall of the mounting hole, and the connecting part is clamped in the mounting groove and fixedly connected with the side frame.

[0009] In an embodiment, a positioning part is protruded on a side of the buffer part close to the accommodating cavity, and a positioning groove is formed between the positioning part and the side wall of the mounting hole.

[0010] In an embodiment, the air bag assembly comprises a first air bag part and a second air bag part, the first air bag part comprises a first connecting part and a first buffer part, the first connecting part is connected to a peripheral edge of the first buffer part, the first buffer part is recessed with an air bag groove, the second air bag part comprises a second connecting part and a second buffer part, the second connecting part is connected to a peripheral edge of the second buffer part, the second buffer part covers a groove opening of the air bag groove, and the first connecting part and the second connecting part are sealingly connected to make the air bag groove form the closed air bag cavity.

[0011] In an embodiment, the first buffer part and the second buffer part form the buffer part, and the first connecting part and the second connecting part form the connecting part.

[0012] In an embodiment, the first air bag part is located on a side of the second air bag part away from the accommodating cavity, the second connecting part is provided with the positioning hole, or the first connecting part and the second connecting part are both provided with the positioning hole.

[0013] The application further provides a manufacturing method of the air bag protection shell, which is used for manufacturing the air bag protection shell and comprises the following steps:

[0014] The raw material is shaped to obtain the air bag assembly, and the positioning hole is opened on the connecting part of the air bag assembly;

[0015] The air bag assembly is fixed to the mold core through the positioning hole;

[0016] The mold core is placed in a mold, and the air bag protection shell is obtained through injection molding or assembly.

[0017] In an embodiment, the raw material is obtained through injection molding to obtain the air bag assembly, and the positioning hole is opened on the connecting part of the air bag assembly, comprising:

[0018] A first initial part comprising a plurality of first air bag parts is obtained through shaping;

[0019] A second initial part comprising a plurality of second air bag parts is obtained through shaping;

[0020] cutting the composite piece to obtain a single airbag assembly.

[0021] cutting the composite piece to obtain a single airbag assembly.

[0022] In one embodiment, the mold core is placed in a mold, and the airbag protective shell is obtained by injection molding or assembly, comprising:

[0023] the mold core with the airbag assembly fixed thereon is placed in a mold;

[0024] the side frame and the back plate are injection molded and connected to the airbag assembly to obtain the airbag protective shell.

[0025] In one embodiment, the mold core is placed in a mold, and the airbag protective shell is obtained by injection molding or assembly, comprising:

[0026] the mold core with the airbag assembly fixed thereon is placed in a mold;

[0027] the back plate obtained by injection molding is placed in a mold;

[0028] the side frame is injection molded and connected to the airbag assembly and the back plate to obtain the airbag protective shell.

[0029] In one embodiment, the mold core is placed in a mold, and the airbag protective shell is obtained by injection molding or assembly, comprising:

[0030] the mold core with the airbag assembly fixed thereon is placed in a mold;

[0031] the side frame is injection molded and connected to the airbag assembly;

[0032] the back plate obtained by injection molding is assembled with the side frame to obtain the airbag protective shell.

[0033] In one embodiment, the first initial piece is connected to one side of the second initial piece to obtain a composite piece comprising a plurality of airbag assemblies, comprising:

[0034] the second initial piece is sealed and connected to the first initial piece by high frequency or hot melt or adhesive.

[0035] In summary, the airbag protection shell and the manufacturing method of the airbag protection shell are provided, the airbag protection shell comprises a side frame, a back plate and an airbag assembly, the side frame is arranged around the periphery of the back plate to form a containing cavity, the side frame is provided with a mounting position, the airbag assembly comprises a buffer part and a connecting part, the connecting part is connected to the periphery of the buffer part, the buffer part comprises a closed airbag cavity, the connecting part is provided with a positioning hole, the airbag assembly is arranged in the mounting position, and the connecting part is connected with the side frame. Compared with the prior art, the airbag is clamped and fixed by the clamp, and the deformed shape of the airbag is easily fixed by the side frame, so that the unqualified protection shell product is produced, and in the airbag protection shell provided by the application, the positioning hole is arranged on the connecting part of the airbag assembly, the protruding part of the mold core is inserted into the positioning hole, so that the airbag assembly can be fixed on the mold core in the original shape for production, and the side frame is injection molded and connected to the airbag assembly. The airbag assembly still does not deform, so that the qualified airbag protection shell can be successfully produced, and the airbag protection shell production failure rate is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 The schematic diagram of the airbag protection shell provided by the application.

[0037] Figure 2 The exploded schematic diagram of the airbag protection shell in Figure 1

[0038] Figure 3 The exploded schematic diagram of the airbag assembly in Figure 1

[0039] Figure 4 The sectional view schematic diagram of the side frame in Figure 1

[0040] Figure 5 The sectional view schematic diagram of the airbag assembly in Figure 1

[0041] Figure 6 The schematic diagram of the composite part in the manufacturing method of the airbag protection shell provided by the application.

[0042] Figure 7 The exploded schematic diagram of the composite part in Figure 6

[0043] Figure 8 The flow chart of the manufacturing method of the first airbag protection shell provided by the application.

[0044] Figure 9 The flow chart of the manufacturing method of the second airbag protection shell provided by the application.

[0045] Figure 10 ​​​​​A third airbag protection shell manufacturing method flow chart provided by the present application.

[0046] Figure 11 A fourth airbag protection shell manufacturing method flow chart provided by the present application.

[0047] Figure 12 A fifth airbag protection shell manufacturing method flow chart provided by the present application.

[0048] Figure 13 A sixth airbag protection shell manufacturing method flow chart provided by the present application. DETAILED DESCRIPTION

[0049] Before the embodiments are described in detail, it should be understood that the present application is not limited to the detailed structure or arrangement of elements described hereinbelow or in the accompanying drawings. The present application can be implemented in other ways. Furthermore, it should be understood that the language and terminology used herein are used only for the purpose of description and should not be construed as limiting. As used herein, "include," "comprise," "have," and the like are intended to encompass the items listed thereafter, equivalents thereof, and additional items. In particular, when describing "one element," the present application does not limit the number of the element to one, but can include a plurality of the element.

[0050] As Figures 1 to 5 described above, the present application provides an airbag protection shell 10, which includes a side frame 12, a back plate 13, and an airbag assembly. The side frame 12 is arranged around the periphery of the back plate 13 to form a receiving cavity 11. The side frame 12 is provided with a mounting position 21. The airbag assembly includes a buffer portion 31 and a connecting portion 34 connected to each other. The connecting portion 34 is connected to the periphery of the buffer portion 31. The buffer portion 31 includes a closed airbag cavity 37. The connecting portion 34 is provided with a positioning hole 341. The airbag assembly is arranged in the mounting position 21, and the connecting portion 34 is connected to the side frame 12. Compared with the prior art, the airbag is clamped and fixed by a clamp, and the deformed shape of the airbag after deformation is easily fixed by the side frame 12, thus producing unqualified protection shell products. In the airbag protection shell 10 provided by the present application, the positioning hole 341 is arranged on the connecting portion 34 of the airbag assembly. The protruding portion of the mold core is inserted into the positioning hole 341, so that the airbag assembly can be fixed on the mold core in the original shape for production. The side frame 12 is injection molded and connected to the airbag assembly. The airbag assembly does not deform, so that the qualified airbag protection shell 10 can be successfully produced, and the yield of the airbag protection shell 10 is greatly reduced.

[0051] The air bag protection shell 10 is sleeved on the electronic device such as mobile phone and tablet computer. When the electronic device with the air bag protection shell 10 falls and collides with the ground by accident, the air bag assembly first contacts the ground, and the air bag protection shell 10 can buffer and protect the electronic device with the air bag protection shell 10 by means of the closed air bag cavity 37 on the air bag assembly, so as to avoid the fragile part of the electronic device from being broken and the part prone to indentation from being dented.

[0052] In the embodiment, the positioning hole 341 is two, and the two positioning holes 341 are arranged near the opposite ends of the buffer part 31. Specifically, the connecting part 34 is arranged around the outer periphery of the buffer part 31. By arranging the positioning hole 341 on the connecting part 34 at different positions of the connecting part 34, the air bag assembly can be stably fixed on the mold core of the machine for producing the air bag protection shell 10. Even when the side frame 12 is fixedly connected with the air bag assembly by injection molding, the air bag assembly will not be displaced and shaken, so that the shape of the air bag assembly will not change and the original shape is maintained to combine with the side frame 12.

[0053] In the embodiment, the mounting site 21 is a mounting port penetrating through the opposite sides of the side frame 12. The mounting slot 211 is concavely arranged on the side wall of the mounting port. The air bag assembly is clamped in the mounting slot 211 by the connecting part 34 and fixedly connected with the side frame 12, so that the air bag assembly can be firmly fixed on the side frame 12, and the electronic device is accommodated in the accommodating cavity 11. When the air bag protection shell 10 collides with the ground, the air bag assembly first contacts the ground and buffers and protects the electronic device at the first time. Because the air bag assembly is clamped in the mounting slot 211 by the connecting part 34 and fixedly connected with the side frame 12, the air bag assembly can be prevented from being separated from the side frame 12 when colliding with the ground.

[0054] Further, the buffer part 31 is provided with a positioning part 311 on one side of the accommodating cavity 11. The positioning slot 312 is formed between the positioning part 311 and the side wall of the mounting port. Specifically, the air bag assembly is fixed on the mold core, the side frame 12 is injection-molded and connected with the air bag assembly, and the positioning slot 312 is formed between the positioning part 311 and the side frame 12. Part of the mold core is clamped in the positioning slot 312 to prevent the side frame 12 from shaking relative to the mold core when injection-molded and connected with the back plate 13.

[0055] Further, the mounting opening comprises oppositely arranged first and second side walls 41 and 42, the first side wall 41 is arranged closer to the back plate 13 than the second side wall 42, the positioning portion 311 and the first side wall 41 form a positioning groove 312, the positioning portion 311 and the second side wall 42 form a positioning groove 312, and the part of the mold core is clamped in the positioning grooves 312 on the opposite sides of the positioning portion 311, which can further improve the stability of the side frame 12 fixed to the mold core. In the embodiment of the application, the positioning groove 312 is annular, and in other embodiments, the shape of the positioning groove 312 is not limited, as long as the part of the mold core is clamped in the positioning groove 312 to prevent the side frame 12 from shaking relative to the mold core.

[0056] In the embodiment, the air bag assembly comprises a first air bag piece 14 and a second air bag piece 15, the first air bag piece 14 comprises a first connecting portion 35 and a first buffer portion 32, the first connecting portion 35 is connected to the periphery of the first buffer portion 32, and the first buffer portion 32 is recessed with an air bag groove 321, the second air bag piece 15 comprises a second connecting portion 36 and a second buffer portion 33, the second connecting portion 36 is connected to the periphery of the second buffer portion 33, and the second buffer portion 33 covers the slot of the air bag groove 321, the first connecting portion 35 and the second connecting portion 36 are sealingly connected to form a closed air bag cavity 37 in the air bag groove 321, wherein the first buffer portion 32 and the second buffer portion 33 form a buffer portion 31, and the first connecting portion 35 and the second connecting portion 36 form a connecting portion 34. Because the first connecting portion 35 and the second connecting portion 36 are sealingly connected and form a closed air bag cavity 37 in the air bag groove 321, when the air bag assembly is crushed by the ground collision, the air pressure in the closed air bag cavity 37 cannot be vented to the outside, so that the air pressure in the closed air bag cavity 37 gradually increases, and gradually enhances the force provided by the buffer portion 31 to resist the deformation of the buffer portion 31, thereby making the buffer portion 31 have the effect of buffering and protecting the electronic device.

[0057] In the embodiment, the first air bag piece 14 is located on the side away from the accommodating cavity 11 of the second air bag piece 15, the second connecting portion 36 is provided with a positioning hole 341, or the first connecting portion 35 and the second connecting portion 36 are both provided with a positioning hole 341, and the protruding portion protruding from the mold core is inserted into the positioning hole 341, so that the air bag protection shell 10 can be fixed to the mold, and after processing, the air bag protection shell 10 with the mold core fixed therein is obtained, and then the mold core is separated from the air bag protection shell 10, and correspondingly, the protruding portion is separated from the positioning hole 341, so that a qualified air bag protection shell 10 product can be obtained for being sleeved on the electronic device.

[0058] As shown in Figure 8 The application further provides a manufacturing method of the air bag protection shell 10, which is used for manufacturing the air bag protection shell 10 described above, and comprises the following steps:

[0059] S100: The raw material is shaped into an airbag assembly, and a positioning hole 341 is opened on the connecting portion 34 of the airbag assembly. The shaping includes injection molding, blow molding, extrusion molding, vacuum molding, hot pressing molding, ultrasonic welding, etc.

[0060] S200: Fix the airbag assembly to the mold core through the positioning hole 341. Specifically, the mold core can be detachably installed on the machine for producing the airbag protective shell 10, and the protruding portion protruding from the mold core is inserted into the positioning hole 341 to fix the airbag assembly to the mold core.

[0061] S300: placing the mold core in the mold, and obtaining the airbag protective shell 10 by injection molding or assembly.

[0062] like Figure 9 As shown, in an embodiment, S100 includes:

[0063] S101: A first initial component 51 including a plurality of first airbag components 14 is obtained by shaping. Specifically, the raw material is injection molded into a mold for forming the first initial component 51 to obtain a semi-finished first initial component 51 connected to the mold. The semi-finished first initial component 51 is then removed from the mold to obtain the first initial component 51, which has a plurality of airbag grooves 321. Shaping includes injection molding, blow molding, extrusion molding, vacuum forming, thermoforming, ultrasonic welding, and the like.

[0064] S102: A second initial component 52 including a plurality of second airbag components 15 is obtained by shaping. Specifically, the raw material is injection molded into a mold for forming the second initial component 52 to obtain a semi-finished second initial component 52 connected to the mold. The semi-finished second initial component 52 is then removed from the mold to obtain the second initial component 52. Shaping includes injection molding, blow molding, extrusion molding, vacuum forming, thermoforming, ultrasonic welding, etc.

[0065] S103: Connect the first initial component 51 to one side of the second initial component 52 to obtain a composite component 50 including multiple airbag components. Specifically, the second initial component 52 is covered on the side of the first initial component 51 having the airbag groove 321 and is sealed to the first airbag component 14 to obtain a composite component 50 having multiple closed airbag cavities 37 (refer to Figure 6 and Figure 7 ).

[0066] S104: Cut the composite part 50 to obtain individual airbag components. Specifically, cut around the periphery of the individual airbag cavity to obtain individual airbag components with closed airbag cavities 37 . Each individual airbag component has a connecting portion 34 and a buffer portion 31 .

[0067] like Figure 10 As shown, in an embodiment, S300 includes:

[0068] S301: Place the mold core with the airbag assembly fixed thereon on the mold. Specifically, the mold is installed on the airbag protection shell 10 production machine, and the mold core fixes the airbag assembly on the mold to indirectly fix the airbag assembly on the airbag protection shell production machine.

[0069] S302: Connect the side frame 12 and the back plate 13 to the airbag assembly by injection molding to obtain the airbag protection shell 10. Specifically, the raw material is injection molded with the airbag assembly on the mold, so that the molded side frame 12 is fixedly connected to the airbag assembly, the back plate 13 is integrally formed with the side frame 12, and the airbag protection shell 10 is obtained.

[0070] As shown in the embodiment, S300 includes: Figure 11

[0071] S303: Place the mold core with the airbag assembly fixed thereon on the mold. Specifically, the mold is installed on the airbag protection shell 10 production machine, and the mold core fixes the airbag assembly on the mold to indirectly fix the airbag assembly on the airbag protection shell production machine.

[0072] S304: Place the back plate 13 obtained by injection molding on the mold. Specifically, the back plate 13 is obtained by injection molding of the raw material, and the back plate 13 is placed on the mold.

[0073] S305: Connect the side frame 12 to the airbag assembly and the back plate 13 by injection molding to obtain the airbag protection shell 10. Specifically, the raw material is injection molded with the airbag assembly and the back plate 13 on the mold, so that the molded side frame 12 is fixedly connected to the airbag assembly and the back plate 13, respectively, and the airbag protection shell 10 is obtained.

[0074] As shown in the embodiment, S300 includes: Figure 12

[0075] S306: Place the mold core with the airbag assembly fixed thereon on the mold. Specifically, the mold is installed on the airbag protection shell 10 production machine, and the mold core fixes the airbag assembly on the mold to indirectly fix the airbag assembly on the airbag protection shell production machine.

[0076] S307: Connect the side frame 12 to the airbag assembly by injection molding. Specifically, the raw material is injection molded with the injection molded airbag assembly on the mold, so that the molded side frame 12 is fixedly connected to the airbag assembly.

[0077] S308: Obtain the airbag protection shell 10 by assembling the back plate 13 obtained by injection molding with the side frame 12. Specifically, the back plate 13 is obtained by injection molding of the raw material, and then the back plate 13 is fixedly connected to the side frame 12 connected with the airbag assembly by assembling, and finally the airbag protection shell 10 is obtained.

[0078] As shown in the embodiment, S300 includes: Figure 13 ​​As shown, in the embodiment, S103 comprises:

[0079] S113: the second initial piece 52 is connected to the first initial piece 51 by high frequency sealing, or the second initial piece 52 is connected to the first initial piece 51 by hot melting sealing, or the second initial piece 52 is connected to the first initial piece 51 by adhesive sealing.

[0080] In summary, the airbag protection shell and the manufacturing method thereof provided by the present application, the airbag protection shell comprises a side frame, a back plate and an airbag assembly, the side frame is arranged around the periphery of the back plate to form a containing cavity, the side frame is provided with a mounting position, the airbag assembly comprises a buffer part and a connecting part, the connecting part is connected to the periphery of the buffer part, the buffer part comprises a closed airbag cavity, the connecting part is provided with a positioning hole, the airbag assembly is arranged in the mounting position, and the connecting part is connected to the side frame. Compared with the prior art, the airbag is clamped and fixed by a clamp, and the deformed shape of the airbag is easily fixed by the side frame, so that unqualified protection shell products are produced. In the airbag protection shell provided by the present application, the positioning hole is arranged on the connecting part of the airbag assembly, the protruding part of the mold core is inserted into the positioning hole, so that the airbag assembly can be fixed on the mold core in the original shape for production, and the side frame is injection-molded and connected to the airbag assembly. The airbag assembly still does not deform, so that qualified airbag protection shells can be successfully produced, and the airbag protection shell production failure rate is greatly reduced.

[0081] The concepts described herein can be embodied in other forms without departing from the spirit and nature of the disclosure. The disclosed specific embodiments are to be considered as illustrative and not restrictive. Therefore, the scope of the present application is determined by the appended claims, not by the foregoing description. Any changes within the literal meaning and equivalent scope of the claims should be considered within the scope of the claims.

Claims

1. An airbag protection shell, characterized in that The airbag protection shell comprises a side frame, a back plate and an airbag assembly, the side frame is arranged around the periphery of the back plate to form a containing cavity, the side frame is provided with a mounting position, the airbag assembly comprises a buffer part and a connecting part, the connecting part is connected to the periphery of the buffer part, the buffer part comprises a closed airbag cavity, the connecting part is provided with a positioning hole, the positioning hole is two, and the two positioning holes are respectively arranged near the opposite ends of the buffer part; the airbag assembly is arranged in the mounting position, the mounting position is a mounting port penetrating through the opposite sides of the side frame, and the connecting part is connected with the side frame, the buffer part is provided with a positioning part near one side of the containing cavity, and a positioning groove is formed between the positioning part and the side wall of the mounting port, wherein the positioning hole is used for fixing the airbag assembly on a mold core, and the mold core is placed in a mold, so that the airbag protection shell can be obtained by injection molding or assembly.

2. The airbag cover of claim 1, wherein, A mounting groove is concavely arranged on the side wall of the mounting port, and the connecting part is clamped in the mounting groove and fixedly connected with the side frame.

3. The airbag cover of claim 1, wherein, The airbag assembly comprises a first airbag part and a second airbag part, the first airbag part comprises a first connecting part and a first buffer part, the first connecting part is connected to the periphery of the first buffer part, the first buffer part is concavely provided with an airbag groove, the second airbag part comprises a second connecting part and a second buffer part, the second connecting part is connected to the periphery of the second buffer part, the second buffer part covers the groove opening of the airbag groove, and the first connecting part and the second connecting part are sealingly connected to form the closed airbag cavity.

4. The airbag cover of claim 3, wherein, The first buffer part and the second buffer part form the buffer part, and the first connecting part and the second connecting part form the connecting part.

5. The airbag cover of claim 3, wherein, The first airbag part is located on the side of the second airbag part away from the containing cavity, the second connecting part is provided with the positioning hole, or the first connecting part and the second connecting part are both provided with the positioning hole.

6. A method of manufacturing an airbag protection case, for manufacturing the airbag protection case according to any one of claims 1 to 5, characterized by, The method comprises the following steps: The raw material is shaped to obtain the airbag assembly, and the positioning hole is opened on the connecting part of the airbag assembly; The airbag assembly is fixed on the mold core through the positioning hole; The mold core is placed in a mold, and the airbag protection shell is obtained by injection molding or assembly.

7. The method of manufacturing an airbag cover case according to claim 6, wherein The raw material is injection molded to obtain the airbag assembly, and the positioning hole is opened on the connecting part of the airbag assembly, comprising: A first initial part comprising a plurality of first airbag parts is obtained by shaping; A second initial part comprising a plurality of second airbag parts is obtained by shaping; A composite part comprising a plurality of airbag assemblies is obtained by connecting the first initial part to one side of the second initial part; The composite part is cut to obtain a single airbag assembly.

8. The method of manufacturing an airbag cover case according to claim 6, wherein The mold core is placed in a mold, and the airbag protection shell is obtained by injection molding or assembly, comprising: The mold core fixed with the airbag assembly is placed on the mold; The side frame and the back plate are injection molded and connected to the airbag assembly to obtain the airbag protection shell.

9. The method of manufacturing an airbag cover case according to claim 6, wherein The mold core is placed in a mold, and the airbag protection shell is obtained by injection molding or assembly, comprising: The mold core fixed with the airbag assembly is placed on the mold; placing the back plate obtained by injection molding on a mold; injecting the side frame to the air bag assembly and the back plate to obtain the air bag protection shell.

10. The method of manufacturing an airbag cover case according to claim 6, wherein placing the mold core in a mold, and obtaining the air bag protection shell by injection molding or assembly, comprising: placing the mold core with the air bag assembly fixed thereon on a mold; injecting the side frame to the air bag assembly; obtaining the air bag protection shell by assembling the back plate obtained by injection molding with the side frame.

11. The method of manufacturing an airbag cover case according to claim 7, wherein connecting the first initial piece to one side of the second initial piece to obtain a composite piece comprising a plurality of air bag assemblies, comprising: the second initial piece is sealedly connected to the first initial piece by high frequency or hot melt or adhesive. the second initial piece is sealedly connected to the first initial piece by high frequency or hot melt or adhesive.

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