A vehicle door hat-shaped hot formed bumper beam structure

Abstract

The utility model relates to the field of automobile manufacturing, concretely relates to a car door hat shape hot forming crash beam structure. It includes the car door outer panel, hot forming crash beam combination spare, car door inner panel and vibration isolation glue, the hot forming crash beam combination spare includes hot forming crash beam and wire harness support, and hot forming crash beam is provided with 2 wire harness fixed holes, and the wire harness fixed hole sets up in the both sides of hot forming crash beam, the cross section of hot forming crash beam sets up as the hat shape structure, and the middle part is protruding and is provided with the deep pressure rib of concave formation in the protruding middle position. The utility model has good overall strength, and the safety performance is promoted, and passenger safety can be protected more; the weight of hot forming crash beam combination spare is reduced by 10%, is favorable to the lightweight of car body and reduces fuel consumption; the support surface of car door outer panel is bigger, can improve the concave resistance of outer panel (about 30%); because hot forming crash beam matches the car door modeling design, the range of arrangement is bigger, and more car models are suitable, and the safety requirement is more easily satisfied.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing, specifically to a door cap-shaped thermoformed anti-collision beam structure. Background Technology

[0002] With the updating of occupant protection regulations in various countries, many countries have added side pole impact tests, gradually increasing the requirements for vehicle body passive safety. To provide sufficient occupant safety space in the event of a side impact, anti-collision beam structures are designed within the door cavities. Currently, most automotive door anti-collision beam structures adopt the form of anti-collision tubular beams. Anti-collision tubular beams have the following disadvantages: they are greatly affected by the door shape, cannot provide sufficient support points for the outer door panel, and the outer door panel has poor dent resistance; in some older models, due to styling limitations, they cannot be installed in safe and feasible locations; and the weight of the anti-collision tubular beam structure increases, leading to increased vehicle fuel consumption.

[0003] Anti-collision beams in existing technologies, such as Figure 1-2 As shown, the assembly includes an outer door panel 1', a crash beam assembly 2', and an inner door panel 3'. The crash beam assembly is first spot-welded to the inner door panel, and then 3-4 vibration-damping adhesives are sprayed between it and the outer door panel. Finally, it is assembled with the outer door panel using an edge-wrapping process. The beam supports the outer panel through the vibration-damping adhesive, improving its dent resistance.

[0004] The existing anti-collision tube beam structure is relatively inconvenient to arrange because the gap between the tube beam and the outer panel needs to be between 3-5mm at the location where the vibration damping adhesive is sprayed, which is limited by the shape of the car door (see...). Figure 1 (On the left side), the area where the anti-collision beam can be placed is relatively small. For some models, safety requires the rear end of the anti-collision beam to be lowered to overlap with the B-pillar as much as possible to improve collision protection performance. However, the anti-collision beam cannot be placed in areas with abrupt changes in shape (the beam is a straight tube), making it difficult to meet safety requirements. The anti-collision beam assembly generally consists of front and rear connecting brackets, the beam, and wiring harness fixing brackets, and is relatively heavy. Utility Model Content

[0005] To address the aforementioned problems, this utility model proposes a door-hat-shaped thermoformed anti-collision beam structure. The cross-section of the anti-collision beam is designed in a hat shape to enhance the lateral compressive strength of the vehicle body, and it matches the outer panel profile of the door, thus increasing the available installation range. The specific technical solution is as follows: A door-shaped thermoformed anti-collision beam structure includes an outer door panel, a thermoformed anti-collision beam assembly, an inner door panel, and vibration damping rubber. The thermoformed anti-collision beam assembly includes a thermoformed anti-collision beam and a wiring harness bracket. The thermoformed anti-collision beam is provided with two wiring harness fixing holes, which are located on both sides of the thermoformed anti-collision beam. The cross-section of the thermoformed anti-collision beam is designed as a hat-shaped structure, with a central protrusion and a deep rib formed by an indentation in the middle of the protrusion.

[0006] Furthermore, the thermoformed anti-collision beam assembly is spot-welded to the inner door panel, and vibration damping adhesive is applied between it and the outer door panel for edge binding.

[0007] Furthermore, the thermoformed anti-collision beam is 1.8mm thick, 1132mm long, and 155mm wide. The adhesive surface of the thermoformed anti-collision beam has 7 adhesive grooves with a depth of 1mm. The thermoformed anti-collision beam is provided with 2 wire harness fixing holes and 1 wire harness fixing bracket is welded on the thermoformed anti-collision beam.

[0008] Furthermore, the width of the central protrusion of the thermoformed anti-collision beam is 28mm, and the width of the concave deep rib is 5mm.

[0009] Furthermore, the two ends of the thermoformed anti-collision beam assembly are spot-welded to the inner door panel, and the outer door panel is supported by vibration damping adhesive.

[0010] Furthermore, the vibration damping adhesive is a thermosetting solvent-free metal-to-metal reactive adhesive based on synthetic rubber, which can achieve greater strength after being coated and baked.

[0011] Compared with existing anti-collision beam structures, this utility model has better overall strength, improved safety performance, and better protection for occupants; the weight of the thermoformed anti-collision beam assembly is reduced by 10%, which is conducive to vehicle body lightweighting and fuel consumption reduction; the support surface for the outer door panel is larger, which can improve the dent resistance of the outer panel (by about 30%); because the thermoformed anti-collision beam is matched with the door shape design, it can be deployed in a wider range, is applicable to more vehicle models, and is more likely to meet safety requirements. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of an existing anti-collision beam and door structure; Figure 2 for Figure 1 The diagram shown is an enlarged view of the section cut along the AA direction; Figure 3 This is a schematic diagram of the anti-collision beam structure of this utility model; Figure 4 for Figure 3 The diagram shown is an enlarged view of the section cut along the AA direction; Figure 5 This is a schematic diagram of the thermoformed anti-collision beam assembly of this utility model.

[0013] Figure label: 1'- Outer door panel; 2'- Anti-collision beam; 3'- Inner door panel; 1- Outer door panel; 2- Thermoformed anti-collision beam assembly; 3- Inner door panel; 4- Vibration damping adhesive; 31- Thermoformed anti-collision beam; 32- Wiring harness fixing bracket; 33- Wiring harness fixing hole. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] like Figure 3-5 As shown, a door-shaped thermoformed anti-collision beam structure includes an outer door panel 1, a thermoformed anti-collision beam assembly 2, an inner door panel 3, and vibration damping adhesive 4. The thermoformed anti-collision beam assembly 2 includes a thermoformed anti-collision beam 31 and a wiring harness bracket 32. The thermoformed anti-collision beam 31 has two wiring harness fixing holes 33 on its body, which are located on both sides of the thermoformed anti-collision beam 31. The cross-section of the thermoformed anti-collision beam 31 is a hat-shaped structure with a central protrusion and a deep rib formed by an indentation in the middle of the protrusion.

[0016] The thermoformed anti-collision beam assembly 2 is connected to the inner door panel by spot welding, and vibration damping adhesive 4 is applied between it and the outer door panel 1 to wrap the edges of the outer door panel 1.

[0017] The thermoformed anti-collision beam 31 is 1.8mm thick, 1132mm long, and 155mm wide. The adhesive surface of the thermoformed anti-collision beam has 7 adhesive grooves with a depth of 1mm. The thermoformed anti-collision beam body has 2 wire harness fixing holes 33, and a wire harness fixing bracket 32 ​​is welded on the thermoformed anti-collision beam.

[0018] The width of the protrusion in the middle of the thermoformed anti-collision beam 31 is 28mm, and the width of the concave deep rib is 5mm.

[0019] The hot-formed anti-collision beam assembly 2 is spot-welded to the inner door panel 3 at both ends, and the outer door panel 1 is supported by vibration damping adhesive 4.

[0020] The vibration damping adhesive 4 is a thermosetting solvent-free metal-to-metal reactive adhesive based on synthetic rubber. After being coated and baked to cure, it can achieve greater strength.

[0021] The hat-shaped anti-collision beam has an increased Y-direction cross-sectional dimension, and the added deep ribs at the top of the hat further enhance the compressive strength of the vehicle side, which can significantly improve the safety of occupants.

[0022] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A door-hat-shaped thermoformed anti-collision beam structure, characterized by: It includes an outer door panel, a thermoformed anti-collision beam assembly, an inner door panel, and vibration damping material. The thermoformed anti-collision beam assembly includes a thermoformed anti-collision beam and a wiring harness bracket. The thermoformed anti-collision beam is provided with two wiring harness fixing holes, which are located on both sides of the thermoformed anti-collision beam. The cross-section of the thermoformed anti-collision beam is designed as a hat-shaped structure, with a protrusion in the middle and a concave deep rib in the middle of the protrusion.

2. The door cap-shaped thermoformed anti-collision beam structure according to claim 1, characterized in that: The thermoformed anti-collision beam assembly is connected to the inner door panel by spot welding, and vibration damping adhesive is applied between it and the outer door panel for edge binding.

3. The door cap-shaped thermoformed anti-collision beam structure according to claim 1, characterized in that: The thermoformed anti-collision beam is 1.8mm thick, 1132mm long, and 155mm wide. The adhesive surface of the thermoformed anti-collision beam has 7 adhesive grooves with a depth of 1mm. The thermoformed anti-collision beam is provided with 2 wire harness fixing holes and 1 wire harness fixing bracket is welded on the thermoformed anti-collision beam.

4. The door cap-shaped thermoformed anti-collision beam structure according to claim 1, characterized in that: The width of the raised section in the middle of the thermoformed anti-collision beam is 28mm, and the width of the recessed deep rib is 5mm.

5. The door cap-shaped thermoformed anti-collision beam structure according to claim 1, characterized in that: The hot-formed anti-collision beam assembly is spot-welded to the inner door panel at both ends, and the outer door panel is supported by vibration damping adhesive.

6. The door cap-shaped thermoformed anti-collision beam structure according to claim 1, characterized in that: The vibration damping adhesive is a thermosetting solvent-free metal-to-metal reactive adhesive based on synthetic rubber.

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