Steel door collision anti-detachment structure, door and car with this structure

Abstract

This utility model relates to a door anti-detachment structure, specifically a steel-framed door collision anti-detachment structure; applied to automobile doors, it includes a hinge, the hinge comprising a door bracket and a body bracket, one end of the door bracket being connected to the door, and the body bracket being connected to the vehicle body, the door bracket and the body bracket being hinged together, and a limiting member is provided below the door bracket or the body bracket, the limiting member being fixedly mounted on the door. The steel-framed door collision anti-detachment structure using this solution ensures that, during a collision, the door will not shift upwards by a smaller distance, and the pin on the hinge door bracket cannot disengage from the hole in the body bracket, ensuring that the door does not detach upon impact.

Description

Technical Field

[0001] This utility model relates to a door anti-detachment structure, specifically a steel door collision anti-detachment structure, a door equipped with the anti-detachment structure, and a car equipped with the door. Background Technology

[0002] As the manufacturing cost of steel hinges decreases, most domestic OEMs need to use steel hinge structures. The biggest advantage of steel hinges is that the door bracket and body bracket of the steel hinge can be repeatedly disassembled and reassembled without loosening the hinge installation bolts.

[0003] The automobile production process requires three workshops: welding, painting, and final assembly. Welded sub-assemblies such as the body, doors, and hinges are assembled and adjusted in the welding workshop. The adjusted body-in-white then goes to the painting workshop for anti-corrosion primer and color paint. The painted body is then transported to the final assembly workshop for chassis, interior and exterior trim, and accessories installation. When installing interior and exterior trim and accessories on the doors, there are two methods for traditional integrated hinges: Option 1: Without disassembling the door, workers directly install the interior trim and accessories. Advantages: The door hinges are not disassembled, and the hinge mounting surface is... Option 1: Remove the door. The body and door can be installed separately for interior and exterior trim and accessories. Advantages: Without the door, workers can install interior and exterior trim and accessories more efficiently. Disadvantages: When assembling the body and door after the interior and exterior trim and accessories are installed, the hinges and door cannot fit perfectly. The misfit will not have anti-corrosion coating and paint, which will affect the anti-corrosion performance and appearance. Workers will need to reapply the anti-corrosion coating and touch up the paint. The hinge mounting bolts will also need to be replaced.

[0004] Detachable steel hinges have an inherent advantage in the final assembly workshop, but they also have an inherent disadvantage in vehicle collision safety. Because the hinges are easy to detach, they are also prone to falling off in severe collision environments, leading to the problem of the door falling off. Summary of the Invention

[0005] The present invention aims to provide a steel door collision anti-detachment structure to prevent the door from falling off after a vehicle collision.

[0006] The steel door collision anti-detachment structure in this solution is applied to the door of a car and includes a hinge. The hinge includes a door bracket and a body bracket. One end of the door bracket is connected to the door and the body bracket is connected to the body. The door bracket and the body bracket are hinged together. A limiting member is provided below the door bracket or the body bracket and is fixedly installed on the door.

[0007] Furthermore, the vehicle body bracket includes a vehicle body bracket seat, a vehicle body bracket arm, and a vehicle body bracket hinge hole seat. The two ends of the vehicle body bracket arm are the vehicle body bracket seat and the vehicle body bracket hinge hole seat, respectively. The vehicle body bracket seat is fixedly installed on the vehicle body. A limiting member is provided below the vehicle body bracket arm, and the limiting member is fixedly installed on the vehicle door.

[0008] Furthermore, one end of the limiting member is fixed to the vehicle door, and the other end is a free end. The free end of the limiting member extends to the lower part of the vehicle body support arm, and there is a gap between the limiting member and the lower end face of the vehicle body support arm.

[0009] Furthermore, the length of the gap is less than the length of the pin inside the hinge hole seat of the vehicle body bracket. In the event of a vehicle collision and hinge damage, the vehicle body bracket will fail to engage with the pin but will not completely detach. This design ensures that a portion of the pin remains inside the hinge hole seat of the vehicle body bracket, preventing the door from detaching but allowing it to still be opened by rotating the pin.

[0010] Furthermore, the length of the gap between the limiting member and the lower end face of the vehicle body support arm is 6cm-8cm. This gap length is suitable for most vehicle models.

[0011] Furthermore, the limiting member is a limiting post, and a stop ring is provided on the post body. The post body on one side of the stop ring is a limiting part, and the post body on the other side of the stop ring is a fixing part. The fixing part is threaded or riveted to the vehicle door.

[0012] Furthermore, the end face of the limiting part is provided with an internal hexagonal hole or an external hexagonal end.

[0013] To address the issue of steel hinge detachment during vehicle collisions, a CAE analysis of the entire vehicle was performed. The analysis revealed that the door support and body support deform in the Z-axis, causing the hinge shaft to detach from the door support. To resolve this issue, a limiting pin was added below the door support. This pin is installed after the door and body are assembled, ensuring that the door can open and close normally while preventing the door from moving upwards during a collision and thus preventing it from detaching.

[0014] This solution provides a car door suitable for automobiles, including at least one set of the aforementioned steel car door collision anti-detachment structures.

[0015] This solution provides a car, including a door with the aforementioned steel door collision anti-detachment structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the anti-detachment structure for steel car doors in the present invention. Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the limiting pin in this utility model; Figure 4 A schematic diagram illustrating the failure of a hinge in a collision involving a vehicle without a limiting mechanism; Figure 5 This is a schematic diagram of the hinge failure in this utility model. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: according to Figures 1 to 3 As shown, the steel door collision anti-detachment structure in this solution is applied to the door of a car and includes a hinge 100, specifically a steel hinge. The hinge 100 includes a door bracket 101 and a body bracket 102. One end of the door bracket 101 is connected to the door 200, and the body bracket 102 is connected to the body 300. The door bracket 101 and the body bracket 102 are hinged together by a pin 103.

[0018] See details Figure 2 The door bracket 101 includes an integrally formed door bracket seat 1-1 and a door bracket hinge hole seat 1-2. The door bracket 101 is fixed to the side of the door 200 by bolts. The door bracket hinge hole seat 1-2 is rotatably hinged to the body bracket hinge hole seat 2-3 (described later) by a pin 103.

[0019] The vehicle body bracket 102 includes a vehicle body bracket seat 2-1, a vehicle body bracket arm 2-2, and a vehicle body bracket hinge hole seat 2-3. The two ends of the vehicle body bracket arm 2-2 are the vehicle body bracket seat 2-1 and the vehicle body bracket hinge hole seat 2-3, respectively. The vehicle body bracket seat 2-1 is fixedly installed on the vehicle body 300 by bolts.

[0020] like Figure 4 As shown, in a door hinge structure without the limiting component described later, the hinge is damaged and fails after a collision, with the body bracket 102 detaching from the pin 103, causing the door to detach.

[0021] A limiting member 400 is provided below the door bracket 101 or the body bracket 102, and the limiting member 400 is fixedly installed on the door 200. In this embodiment, a limiting member 400 is provided below the body bracket arm 2-2, and the limiting member 400 is fixedly installed on the door 200.

[0022] In this embodiment, one end of the limiting member 400 is fixed to the door 200, and the other end is a free end. The free end of the limiting member 400 extends to the lower part of the body support arm 2-2. There is a gap between the limiting member 400 and the lower end face of the body support arm 2-2. The length of this gap is required to be less than the length of the inner pin 103 of the body support hinge hole seat 2-3. Specifically, the distance between the limiting member 400 and the lower end face of the body support arm 2-2 is 6cm-8cm. Figure 5 As shown, when a vehicle is involved in a collision and the hinge is damaged, the body bracket 102 fails to engage with the pin 103. At this time, the body bracket 102 is held in place by the limiting member 400 and does not fall off. This design ensures that there is still part of the pin 103 inside the hinge hole seat 2-3 of the body bracket. The door will not fall off, but it can still be opened by rotating the pin 103.

[0023] See details Figure 3 Specifically, the limiting component 400 is a limiting post, and the post body of the limiting post is provided with a stop ring 1. The post body on one side of the stop ring 1 is a limiting part 2, which extends to the lower part of the vehicle body support arm 2-2. The post body on the other side of the stop ring 1 is a fixing part 3, which is threaded or riveted to the door 200. In this embodiment, the fixing part 3 is provided with external threads, and is fixed to the threaded hole of the door 200 by threaded installation. An internal hexagonal hole 4 is provided on the end face of the post body of the limiting part 2. The limiting post can be installed and removed by using a hexagonal wrench, or the internal hexagonal hole 4 can be replaced with an external hexagonal end. This embodiment provides a vehicle door suitable for automobiles, including at least one set of the aforementioned steel door collision anti-detachment structures. In this embodiment, one vehicle door has two sets of steel door collision anti-detachment structures.

[0024] This embodiment provides a car, including a door with the above-mentioned steel door collision anti-detachment structure.

[0025] The above description is merely an embodiment of this utility model, and common knowledge such as specific structures and characteristics of the solution is not described in detail here. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model, and these should also be considered within the protection scope of this utility model. These modifications and improvements will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A steel-framed door collision anti-detachment structure, applied to automobile doors, characterized in that: Includes a hinge (100), the hinge (100) includes a door bracket (101) and a body bracket (102), one end of the door bracket (101) is connected to the door (200), the body bracket (102) is connected to the body (300), the door bracket (101) and the body bracket (102) are hinged, and a limiting member (400) is provided below the door bracket (101) or the body bracket (102), the limiting member (400) is fixedly provided on the door (200).

2. The anti-detachment structure for steel car doors in a collision as described in claim 1, characterized in that: The vehicle body bracket (102) includes a vehicle body bracket seat (2-1), a vehicle body bracket arm (2-2), and a vehicle body bracket hinge hole seat (2-3). The two ends of the vehicle body bracket arm (2-2) are the vehicle body bracket seat (2-1) and the vehicle body bracket hinge hole seat (2-3), respectively. The vehicle body bracket seat (2-1) is fixedly installed on the vehicle body (300). A limiting member (400) is provided below the vehicle body bracket arm (2-2), and the limiting member (400) is fixedly installed on the door (200).

3. The anti-detachment structure for steel car doors in a collision as described in claim 2, characterized in that: One end of the limiting member (400) is fixed on the door (200), and the other end is a free end. The free end of the limiting member (400) extends to the bottom of the body support arm (2-2), and there is a gap between the limiting member (400) and the lower end face of the body support arm (2-2).

4. The anti-detachment structure for steel vehicle doors in a collision as described in claim 3, characterized in that: The length of the gap is less than the length of the inner pin (103) of the hinge hole seat (2-3) of the vehicle body bracket.

5. The anti-detachment structure for steel car doors in a collision according to claim 3, characterized in that: The length of the gap between the lower end face of the limiting member (400) and the vehicle body support arm (2-2) is 6cm-8cm.

6. The steel door collision anti-detachment structure according to any one of claims 1 to 5, characterized in that: The limiting member (400) is a limiting post, and a stop ring (1) is provided on the post body of the limiting post. The post body on one side of the stop ring (1) is a limiting part (2), and the post body on the other side of the stop ring (1) is a fixing part (3). The fixing part (3) is threaded or riveted to the car door (200).

7. The anti-detachment structure for steel vehicle doors in a collision as described in claim 6, characterized in that: The limiting part (2) has an internal hexagonal hole (4) or an external hexagonal end on its cylindrical end face.

8. A car door, suitable for automobiles, characterized in that: It includes at least one set of steel door collision anti-detachment structures as described in any one of claims 1 to 7.

9. A car, characterized in that: Including the vehicle door as described in claim 8.

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