Head gasbag fixing tool for facilitating adjustment of environmental simulation test

Abstract

This invention provides a head airbag fixing fixture for easy adjustment in environmental simulation tests, including a base assembly. The base assembly includes a fixed base plate, support plates, reinforcing ribs, connecting blocks, a fixture plate, and clearance grooves. Support plates are symmetrically fixed to the upper surface of the fixed base plate, with two support plates respectively positioned at the left and right ends of the fixed base plate. This invention adopts a modular architecture. The base assembly minimizes space occupation through a narrow base plate. Combined with the optimized layout of support plates, reinforcing ribs, and other components, it reduces weight while increasing structural rigidity, enabling it to withstand static loads and dynamic impacts during testing and ensuring overall stability. The base assembly has multi-dimensional adjustment capabilities, with the extension and retraction of the flange base and XYZ three-axis adjustment functions, accommodating the installation requirements of various head airbag specifications. The generator mounting bracket adopts a modular and detachable design, adaptable to different specifications of gas generators.

Description

Technical Field

[0001] This utility model relates to the field of head airbag detection technology, and in particular to a head airbag fixing fixture that is easy to adjust for environmental simulation tests. Background Technology

[0002] In the research and development and testing of automotive head airbags, environmental simulation testing is a crucial step in verifying the reliability of the airbags under extreme conditions. Existing testing fixtures typically use simple brackets or universal clamps to hold the airbags in place, which has the following technical drawbacks: 1. Distortion of fixed state: The fixing hole positions and installation angles of the existing tooling deviate from the actual vehicle body structure, making it impossible to accurately reproduce the pretension force and constraint state of the air curtain on the vehicle body, resulting in differences between the test data and the actual vehicle working conditions; 2. Insufficient compatibility: Customized tooling is required for airbags of different car models, the hole adjustment is cumbersome, and the testing cost is high and the efficiency is low; 3. Poor adaptability to extreme environments: Traditional tooling materials are prone to deformation and corrosion in high and low temperature cycles or high humidity environments, which affects the fixation accuracy and the reliability of test results.

[0003] To address this, a head airbag fixation fixture that is easy to adjust for environmental simulation tests is proposed. Utility Model Content

[0004] In view of this, the present invention provides a head airbag fixing fixture that is easy to adjust for environmental simulation tests, so as to solve or alleviate one of the technical problems existing in the prior art, and at least provide a beneficial option.

[0005] The technical solution of this utility model embodiment is implemented as follows: a head airbag fixing fixture that is easy to adjust for environmental simulation tests includes a base assembly, the base assembly including a fixed base plate, a support plate, a reinforcing rib, a connecting block, a fixture plate and a clearance groove; Support plates are symmetrically fixedly connected to the upper surface of the fixed base plate. Two support plates are respectively set at the left and right ends of the fixed base plate. Two jig plates are symmetrically fixedly connected between the two support plates. Reinforcing ribs are evenly fixedly connected to one side of the two jig plates. The reinforcing ribs are fixedly connected to the fixed base plate. Connecting blocks are fixedly connected between the jig plates. The fixture plate is equipped with a fixing component.

[0006] A further preferred embodiment includes a generator mounting bracket, a locating pin hole, and a generator fastener mounting hole; A generator mounting bracket is fixedly connected to one side of the fixture plate, and a positioning pin hole and a generator fastener mounting hole are provided on one side of the generator mounting bracket.

[0007] A further preferred embodiment includes a flange base and an airbag metal buckle clamping hole; A plurality of flange bases are fixedly connected to one side of the fixture plate, and one end of the flange base is provided with an airbag metal buckle clamping hole.

[0008] A further preferred embodiment: the flange base is equipped with a guide rail slider mechanism and a screw lifting mechanism.

[0009] A further preferred embodiment: an airbag buckle is installed at one end of the flange base.

[0010] A further preferred embodiment: the airbag buckle is internally engaged with a head airbag.

[0011] A further preferred embodiment: the inner walls of the generator fastener mounting holes and the airbag metal buckle clamping holes are fixedly connected with wear-resistant bushings.

[0012] A further preferred embodiment: the surfaces of the fixed base plate, support plate, reinforcing rib, connecting block and fixture plate are provided with an electroplated protective layer.

[0013] The present invention has the following advantages due to the adoption of the above technical solution: I. This utility model adopts a modular architecture. The base component minimizes space occupation through a narrow base plate. At the same time, the optimized layout of components such as support plates and reinforcing ribs reduces weight while improving structural rigidity. It can withstand static loads and dynamic impacts during the test process, ensuring overall stability. II. The base assembly of this utility model has multi-dimensional adjustment capabilities. Through the extension and retraction of the flange base and the XYZ three-axis adjustment function, it is compatible with the installation requirements of various sizes of head airbags. The generator mounting bracket adopts a modular and detachable design, and with the standardized hole system of positioning holes and fastening holes, it can be adapted to different sizes of gas generators, expanding the range of test objects. Third, the hole position system of this utility model is equipped with replaceable wear-resistant bushings, which can maintain hole position accuracy through quick replacement, meet the requirements of high-frequency cycle testing, and greatly extend the service life of tooling. The quick-release design of modular components improves the reusability and maintenance efficiency of the equipment.

[0014] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0016] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a rear structural diagram of the head-fixing airbag of this utility model; Figure 3 This is a structural diagram of the generator mounting bracket of this utility model; Figure 4 This is an enlarged structural view of point A of this utility model.

[0017] Reference numerals: 10. Base assembly; 11. Fixed base plate; 12. Support plate; 13. Reinforcing rib; 14. Connecting block; 15. Fixture plate; 16. Relief groove; 20. Fixing assembly; 21. Generator mounting bracket; 22. Positioning pin hole; 23. Generator fastener mounting hole; 24. Flange base; 25. Airbag metal buckle clamping hole; 30. Airbag buckle; 31. Head airbag. Detailed Implementation

[0018] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0019] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0020] like Figures 1-4 As shown, this utility model embodiment provides a head airbag fixing fixture that is easy to adjust for environmental simulation tests, including a base assembly 10. The base assembly 10 includes a fixed base plate 11, a support plate 12, a reinforcing rib 13, a connecting block 14, a fixture plate 15, and a clearance groove 16. Support plates 12 are symmetrically fixedly connected to the upper surface of the fixed base plate 11. The two support plates 12 are respectively set at the left and right ends of the fixed base plate 11. Two jig plates 15 are symmetrically fixedly connected between the two support plates 12. Reinforcing ribs 13 are evenly fixedly connected to one side of the two jig plates 15. The reinforcing ribs 13 are fixedly connected to the fixed base plate 11. Connecting blocks 14 are fixedly connected between the jig plates 15. A clearance groove 16 is opened on one side of the reinforcing rib 13. The clearance groove 16 is used to make way for the installation of the airbag. The base assembly 10 is the load-bearing component of the head airbag environmental simulation test fixture. It adopts an integrated casting process and achieves modular assembly of the fixture system through a T-slot array and a positioning pin hole system. It is rigidly connected to the test bench through pre-embedded high-strength bolt sleeves to ensure that the axial displacement of the base during loading meets the standard. The reinforcing rib 13 prevents resonance with the vibration excitation in the environmental simulation test.

[0021] Fixture plate 15 is provided with fixing component 20. Fixing component 20 is the core load-bearing structure of airbag environment simulation test fixture, and undertakes the functions of positioning and stabilizing airbag.

[0022] In this embodiment, specifically: the fixing component 20 includes a generator mounting bracket 21, a positioning pin hole 22, and a generator fastener mounting hole 23; A generator mounting bracket 21 is fixedly connected to one side of the fixture plate 15. The generator mounting bracket 21 has a positioning pin hole 22 and a generator fastener mounting hole 23 on one side. The generator mounting bracket 21 adopts a modular and detachable design, and can be quickly adapted to generators of different specifications through standardized connection interfaces, which greatly improves the tooling's compatibility with multiple test objects.

[0023] In this embodiment, specifically: the fixing component 20 also includes a flange base 24 and an airbag metal buckle clamping hole 25; A number of flange bases 24 are fixedly connected to one side of the fixture plate 15, and one end of the flange base 24 is provided with an airbag metal buckle clamping hole 25.

[0024] In this embodiment, specifically: a guide rail slider mechanism and a screw lifting mechanism are installed on the flange base 24. The flange base has XYZ three-axis adjustment function. The horizontal direction (X / Y axis) translation adjustment is realized through the precision guide rail slider mechanism, and the vertical direction (Z axis) height adjustment is completed in conjunction with the screw lifting mechanism. At the same time, an axial telescopic adjustment component is integrated, which can realize the adaptive adjustment of the length of the base along the axial direction according to the test requirements, thereby meeting the installation and positioning adaptability of multi-specification head airbags 31 and greatly improving the compatibility range of the tooling with airbag test pieces of different sizes.

[0025] In this embodiment, specifically: an airbag buckle 30 is installed at one end of the flange base 24, and the airbag buckle 30 is used to fix the head safety airbag 31.

[0026] In this embodiment, specifically: the airbag buckle 30 is internally engaged with a head airbag 31, which is installed on the tooling for testing.

[0027] In this embodiment, specifically: wear-resistant bushings are fixedly connected to the inner walls of the generator fastener mounting hole 23 and the airbag metal buckle clamping hole 25.

[0028] In this embodiment, specifically: the surfaces of the fixed base plate 11, support plate 12, reinforcing rib 13, connecting block 14, and fixture plate 15 are provided with an electroplated protective layer. The fixed base plate 11, support plate 12, reinforcing rib 13, connecting block 14, and fixture plate 15 are preferably made of high-strength alloy material with a yield strength ≥355MPa, tensile strength ≥510MPa, excellent resistance to plastic deformation and overall rigidity. When subjected to static loads and dynamic impacts during the test, it can effectively resist bending, shearing, and torsional deformation, ensuring structural stability. The material surface is electroplated for protection, with a neutral salt spray resistance of ≥500 hours, and can withstand the erosion of corrosive media (such as simulated atmospheric pollutants and humid condensate) in the test environment. At the same time, the material itself has good thermal stability, meeting the durability requirements of long-term high-frequency environmental simulation tests.

[0029] When this utility model is in operation, check the connection and tightness of each component of the base assembly 10, including the fixing base plate 11, support plate 12, reinforcing rib 13, connecting block 14 and fixture plate 15, to ensure that there is no loosening or deformation.

[0030] Verify the integrity and functional effectiveness of the fixed component 20 flange base 24, generator mounting bracket 21, generator positioning hole 22, generator fastener mounting hole 23, and airbag metal buckle clamping hole 25. Focus on confirming whether the detachable replacement structure of the generator mounting bracket 21 is normal and whether the replaceable wear-resistant bushing of the hole system is intact.

[0031] Based on the specifications of the head airbag 31 to be tested, the base assembly 10 is adjusted to a suitable installation position using the telescopic function of the flange base 24 and the XYZ three-axis adjustment mechanism. This adjustment is achieved horizontally via a precision guide rail slider mechanism, and vertically via a screw lifting mechanism, ensuring compatibility with the airbag's installation dimensions. The corresponding generator mounting bracket 21 is selected based on the specifications of the gas generator used in the test, and it is installed and fixed using a quick-release connector. The generator is precisely positioned and secured using the positioning pin holes 22 and the fastening screw holes 23 of the generator fastener mounting system.

[0032] The airbag metal clip clamping hole 25, replicated using digital modeling technology, was used to precisely install the metal clip airbag clip 30 of the head airbag 31 into place, ensuring that the installation state is consistent with the assembly state of the actual vehicle body-in-white. The tightness of each connection point was checked again to confirm that the test piece was securely installed and there was no risk of displacement.

[0033] The environmental simulation test equipment is started. During the test, the tooling is subjected to static loads and dynamic impacts. Its optimized structural design, such as the narrow base plate fixing base plate 11, the topology-optimized support plate 12, and the reinforcing ribs 13, ensures the overall stability, maintains the correct position and posture of the specimen, and ensures that the test is carried out under the preset conditions.

[0034] For high-frequency cyclic tests, replace the replaceable wear-resistant bushings of the hole system involving the positioning pin hole 22, generator fastener mounting hole 23, and airbag metal buckle clamping hole 25 in a timely manner at each test interval or when the hole position accuracy deviates, in order to maintain the hole position accuracy and ensure the continuity and accuracy of the test.

[0035] If it is necessary to replace the head airbag 31 or gas generator with different specifications, repeat the above tooling debugging and test piece installation steps. Utilize the modular design and multi-dimensional adjustment and adaptation functions of the tooling to achieve rapid replacement and adjustment.

[0036] After the test is completed, the head airbag 31 and gas generator are removed in sequence. All parts of the tooling are cleaned and inspected. Any worn parts are maintained or replaced in a timely manner to ensure that the tooling is in good standby condition and ready for the next test.

[0037] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A headrest airbag mounting tool for facilitating adjustment of environmental simulation tests, comprising a base assembly (10), characterised in that: The base assembly (10) includes a fixed base plate (11), a support plate (12), a reinforcing rib (13), a connecting block (14), a jig plate (15), and a clearance groove (16). Support plates (12) are symmetrically fixedly connected to the upper surface of the fixed base plate (11). The two support plates (12) are respectively set at the left and right ends of the fixed base plate (11). Two jig plates (15) are symmetrically fixedly connected between the two support plates (12). Reinforcing ribs (13) are uniformly fixedly connected to one side of the two jig plates (15). The reinforcing ribs (13) are fixedly connected to the fixed base plate (11). Connecting blocks (14) are fixedly connected between the jig plates (15). A relief groove (16) is opened on one side of the reinforcing ribs (13). A fixing component (20) is provided on the fixture plate (15).

2. The head airbag mounting tool for facilitating adjustment of environmental simulation tests of claim 1, wherein: The fixing component (20) includes a generator mounting bracket (21), a positioning pin hole (22), and a generator fastener mounting hole (23). A generator mounting bracket (21) is fixedly connected to one side of the fixture plate (15), and a positioning pin hole (22) and a generator fastener mounting hole (23) are provided on one side of the generator mounting bracket (21).

3. The head airbag mounting tool for facilitating adjustment of environmental simulation tests of claim 2, wherein: The fixing component (20) also includes a flange base (24) and an airbag metal buckle clamping hole (25); A plurality of flange bases (24) are fixedly connected to one side of the fixture plate (15), and one end of the flange base (24) is provided with an airbag metal buckle clamping hole (25).

4. The head airbag mounting tool for facilitating adjustment of environmental simulation tests of claim 3, wherein: The flange base (24) is equipped with a guide rail slider mechanism and a screw lifting mechanism.

5. The head airbag mounting tool for facilitating adjustment of environmental simulation tests of claim 3, wherein: An airbag buckle (30) is installed at one end of the flange base (24).

6. The head bladder fixture for facilitating adjustment of environmental simulation testing of claim 5, wherein: The head airbag (31) is internally engaged with the airbag buckle (30).

7. The head airbag mounting tool for facilitating adjustment of environmental simulation tests of claim 3, wherein: Wear-resistant bushings are fixedly connected to the inner walls of the generator fastener mounting hole (23) and the airbag metal buckle clamping hole (25).

8. The head airbag mounting tool for facilitating adjustment of environmental simulation tests of claim 1, wherein: The surfaces of the fixed base plate (11), support plate (12), reinforcing rib (13), connecting block (14) and fixture plate (15) are provided with an electroplated protective layer.

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