A structure that meets the requirements for preventing door slippage in a side impact

Abstract

This invention discloses a structure for preventing door slippage in a side impact, including an anti-slip post comprising a base, a handle, and anti-slip double balls. The base is bolted to the lower side corner of the rear door, the handle is positioned above the base, and the anti-slip double balls are positioned above the handle. An anti-slip groove is disposed on the side panel, opposite to the anti-slip post, and includes double-layer baffles and mounting holes. The anti-slip groove is fixedly connected to an extruded aluminum alloy door sill, and the double-layer baffles and anti-slip double balls form a multi-stage matching connection. Under normal conditions, the anti-slip groove and anti-slip post have a clearance fit, ensuring normal door opening and use. In a collision, when the rear door rolls over, the anti-slip double balls on the anti-slip post contact the anti-slip groove and apply force, preventing pull-out through multiple mutual interferences. This anti-slip structure ensures that when a car door moves and rolls over in a side impact, it is firmly fixed to the side panel, forming a complete closed structure for the passenger compartment, reducing the side impact intrusion of the barrier, and thus reducing occupant injury.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and in particular to a structure that prevents a vehicle door from slipping off during a side impact. Background Technology

[0002] As people's demands for car ride comfort continue to increase, vehicle wheelbases are also increasing, leading to wider rear doors. With a larger wheelbase, side impact barriers may not reach the C-pillar, leaving the rear door to directly bear the powerful impact. Since the rear door is only secured by a door lock mechanism, it is easily pulled off and flipped over, failing to meet collision requirements. Figure 1 (The arrow indicates a corner of the door that is prone to tipping over). To solve this problem, additional structures are needed to ensure that the rear door does not detach from the side panel during a side collision, thus resisting the impact force, better protecting occupants, and reducing injury.

[0003] Currently, rear doors are typically secured only by a rear door lock mechanism, without any other auxiliary connecting structures. Based on the wheelbase definition, there is a certain overlap between the side impact barrier and the C-pillar, making lateral pull-out during a collision less likely. Figure 2 With increasingly stringent side-impact regulations, the original structure is no longer suitable for the design needs of current long-wheelbase vehicles. Currently, due to... Figure 2 The structure does not adequately protect occupants, has limited effectiveness in restricting the displacement of the rear doors in the Y direction, and fails to maximize the protective function of the door impact bars. There was insufficient consideration of the vehicle system during development; an integrated design concept was not implemented, and innovative design is needed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a structure that satisfies the requirement of preventing door slippage in a side collision. The structure consists of anti-slip matching structures installed on the rear door and the side panel respectively. When a side collision occurs and the door deforms, the anti-slip post on the door can contact and lock with the anti-slip groove on the side panel, thereby achieving the purpose of multi-point connection except for the rear door locking mechanism, so as to prevent the door from slipping off in a collision and causing aggravated injury to the occupants.

[0005] The technical problem to be solved by the present invention is achieved through the following technical solution:

[0006] A structure that prevents a vehicle door from slipping off in a side impact, the structure comprising:

[0007] The anti-slip post includes a base, a handle, and anti-slip double balls. The base is fixed to the lower side corner of the rear door by bolts. The handle is located above the base, and the anti-slip double balls are located above the handle.

[0008] Anti-slip grooves are provided on the side wall, and the anti-slip grooves are positioned opposite to the anti-slip posts. The anti-slip grooves include double-layer baffles and mounting holes. The anti-slip grooves are fixedly connected to the extruded aluminum alloy door sill by FDS screws and mounting holes. The double-layer baffles and the anti-slip double balls form a multi-level matching connection.

[0009] Under normal conditions, the anti-slip groove (7) and the anti-slip post (6) are fitted together to ensure that the door can be opened and used normally;

[0010] In the event of a collision, when the rear door (1) rolls over, the anti-slip double balls on the anti-slip pillar (6) contact the anti-slip groove (7) and apply force, preventing pull-out through multiple mutual interferences.

[0011] Preferably, in the above technical solution, the side panel is further provided with a rear door upper hinge, a rear door lower hinge, and a rear door latch. The anti-slip post is distributed at multiple points with the rear door upper hinge, the rear door lower hinge, and the rear door lock body. The rear door latch cooperates with the rear door lock body to achieve the protective function.

[0012] Preferably, in the above technical solution, the base is an arc-shaped structure with two symmetrical mounting holes on the arc-shaped structure, the bolt is an M8 bolt, and the base is fixed to the lower side corner of the rear door by the M8 bolt.

[0013] Preferably, in the above technical solution, the handle is located at the center above the base, and the handle is a solid conical hexagonal prism structure to enhance the resistance to pull-out fracture.

[0014] Preferably, in the above technical solution, the anti-slip double balls include an upper ball and a lower ball, both balls having the same radius, and the anti-slip double balls are used for multi-level limiting.

[0015] Preferably, in the above technical solution, the double-layer baffle on the anti-slip groove is matched with the anti-slip double balls in multiple stages to form an anti-detachment relationship, so as to better ensure the connection.

[0016] Preferably, in the above technical solution, there is an anti-detachment hole between the double-layer baffles. The anti-detachment hole includes an inner anti-detachment hole and an outer anti-detachment hole. The inner and outer anti-detachment holes are used to interfere with the edges of the anti-slip double balls to prevent the rear door from slipping off.

[0017] Preferably, in the above technical solution, a sealing sleeve is provided between the anti-slip groove and the anti-slip post. When the rear door is closed, the anti-slip post and the sealing sleeve maintain a gap of more than 5mm to ensure normal opening. When the rear door moves, the movement trajectory of the anti-slip post and the sealing sleeve have a minimum safety gap of 3mm.

[0018] The above-described technical solution of the present invention has the following beneficial effects:

[0019] This invention enhances door stability during side collisions by incorporating an anti-slip structure between the rear door and the side panel, thereby improving occupant safety. Simultaneously, the design considers versatility and flexibility, helping to reduce development costs and time for automakers. Furthermore, the structure's design pays attention to details such as aesthetics, sealing, and multi-stage anti-slip mechanisms to adapt to complex collision scenarios and provide comprehensive safety assurance.

[0020] This invention patent allows the car door to shift and flip during a side collision. This anti-slip structure can firmly fix the door to the side panel, forming a complete closed structure for the passenger compartment, reducing the amount of side collision intrusion and thus reducing the occupant injury value. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0022] Figure 1 This is a schematic diagram illustrating the non-alignment of the side impact barrier and the C-pillar in existing technology.

[0023] Figure 2 This is a schematic diagram showing the overlap of the side impact barrier and the C-pillar in existing technology.

[0024] Figure 3 This is a schematic diagram showing the connection between the anti-slip post and the anti-slip groove.

[0025] Figure 4 This is a diagram showing the arrangement of anti-slip posts.

[0026] Figure 5A This is a schematic diagram of the anti-slip column structure.

[0027] Figure 5B for Figure 5A A sectional view along the AA direction.

[0028] Figure 6 This is a diagram showing the layout of the anti-slip grooves.

[0029] Figure 7A This is a schematic diagram of the anti-slip groove structure.

[0030] Figure 7B for Figure 7A A sectional view along the AA direction.

[0031] Figure 8A This is a diagram showing the rear door in its normal state.

[0032] Figure 8B for Figure 8A A sectional view along the AA direction.

[0033] Figure 8C for Figure 8A BB direction sectional view.

[0034] Figure 9A This is a schematic diagram of the side impact motion state of the rear door.

[0035] Figure 9B This is a schematic diagram of the side impact motion state of the rear door (AA first-level contact).

[0036] Figure 9C This is a schematic diagram of the side impact motion state of the rear door (BB second-level contact).

[0037] Figure 9D This is a schematic diagram of the side impact motion state of the rear door (CC third-level contact).

[0038] In the diagram: 1-Rear door, 2-Side impact barrier, 3-C-pillar, 4-Rear door lock mechanism, 5-Side panel, 6-Anti-slip pillar, 7-Anti-slip groove, 8-Anti-collision beam, 9-Upper rear door hinge, 10-Lower rear door hinge, 11-Rear door lock body, 12-Mounting hole, 13-Base, 14-Handle, 15-Upper ball, 16-Lower ball, 17-Rear door latch, 18-Extruded aluminum alloy door sill, 19-Anti-slip groove mounting hole, 20-Anti-detachment hole, 21-Inner anti-detachment hole, 22-Outer anti-detachment hole, 23-Sealing sleeve. Detailed Implementation

[0039] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0040] This invention relates to a system that designs a matching anti-slip structure on the rear door 1 and the side panel 5. In the event of a side collision, the rear door 1 and the side panel 5 are connected at multiple points, including the door lock and the anti-slip structure, preventing the door from being pulled off and overturned under impact. This achieves the goal of protecting occupant safety. Furthermore, this structure can be used across different vehicle models, and the fixed position of the rear door can be adjusted according to the needs of different models, offering relative flexibility and reducing development costs.

[0041] like Figure 3 , Figure 4 As shown, an anti-slip post 6 is arranged at the lower left corner of the rear door 1, integrated with the door anti-collision beam 8, to achieve better force transmission. Its arrangement, along with the upper rear door hinge 9, lower rear door hinge 10, and rear door lock body 11 (the part of the rear door lock body 11 fixed to the door), forms a multi-point distribution. This ensures that in the event of a side collision, the door remains firmly connected to the side panel, preventing the rear door from flipping and slipping off, reducing injury to the driver, and improving the overall quality of the vehicle.

[0042] like Figure 5A and Figure 5BAs shown, the anti-slip post 6 is installed onto the inner rear door panel via two M8 bolts through mounting holes 12. It is a one-piece casting, consisting of a base 13, a handle 14, and two anti-slip balls: an upper ball 15 and a lower ball 16. Both balls have the same radius R, and the distance between their centers is determined by matching the anti-slip groove and the anti-drag effect. The base 13 has a flat surface, and because it is visible, it adopts an arc-shaped design to match the basic shape of the door corner, improving aesthetics. The handle 14 uses a solid, tapered hexagonal prism structure to prevent pull-out and breakage. The two anti-slip balls are connected vertically, providing multi-level limiting to prevent insufficient action from a single level and adapting to complex collision situations.

[0043] like Figure 6 As shown, the anti-slip groove 7 is arranged on the side panel 5, corresponding to the anti-slip post 6. The axis of the anti-slip post 6 and the axis of the hole in the anti-slip groove 7 coincide when the door is closed, with a gap of 7mm to ensure compatibility. The rear door upper hinge 9, rear door lower hinge 10, rear door latch 17 (the part of the rear door lock body 11 fixed to the side panel), and anti-slip groove 7 are arranged on the side panel and matched for connection. The anti-slip groove 7 is fixed to the extruded aluminum alloy sill 18 and connected to the frame. In the event of a side collision, the door can be evenly fixed at multiple points to protect the occupants.

[0044] like Figure 7A and Figure 7B As shown, the anti-slip groove 7 is connected to the extruded aluminum alloy threshold 18 via five FDS screws and five anti-slip groove mounting holes 19, and is connected to the frame component, facilitating force transmission and ensuring a secure connection. The anti-slip groove 7 is designed with double-layer baffles, which are matched with the anti-slip double balls in multiple stages to prevent detachment and better guarantee the connection. The radius of the anti-detachment holes 20 (including the inner anti-detachment hole 21 and the outer anti-detachment hole 22) is designed to be R+7mm, and the spacing between the double-layer baffles is designed to be less than 2R≤h≤3R.

[0045] Matching instructions for this application:

[0046] (1) Normal state Figure 8A , Figure 8B , Figure 8C ):

[0047] When the car door is in normal use, the anti-slip groove 7 and the anti-slip post 6 are in clearance fit to ensure normal opening and closing of the door. To ensure aesthetics and sealing, a sealing sleeve 23 is added, with a thickness of 2mm. As shown in the schematic diagram of the rear door in normal state, when the rear door 1 is closed, it maintains a distance of more than 5mm from the sleeve 23, as shown in section AA, to ensure normal opening; when the rear door 1 moves, the movement trajectory of the anti-slip post 6 maintains a minimum safety clearance of 3mm between it and the sleeve 23.

[0048] (2) Collision state Figure 9A , Figure 9B , Figure 9C , Figure 9D ):

[0049] When rear door 1 opens, the axis of rear door 1 shifts, rotating and deforming around the axis formed by the contact point between the door and the side panel edge. The double ball joints will then contact and apply force to the anti-slip pillars. This process involves three mutual interferences to prevent pull-out. The first level of contact is as follows: Figure 9B As shown, when the rear door 1 moves along with the anti-slip post 6, the lower ball 16 on the anti-slip post 6 interferes with the edge of the inner anti-slip hole 21 of the anti-slip groove 7, preventing the rear door 1 from slipping off. If the first level of contact fails to hold the rear door 1 in place, the upper ball 15 of the anti-slip post 6 will make a second level of contact with the edge of the inner anti-slip hole 21 of the anti-slip groove 7. Figure 9C This prevents the rear door 1 from slipping. If the second level of contact also fails to function, the upper ball 15 of the rear anti-slip post 6 will make a third level of contact with the edge of the outer anti-slip hole 22 of the anti-slip groove. Figure 9D ( ), preventing pull-out. The multi-level force application can prevent the rear door 1 from slipping off, and also provides protection against the uncontrollability of actual side impact movements.

[0050] As can be seen from the above description of this invention, both components are designed as mounting structures, laying the groundwork for standardization. When designing vehicle models of similar size, input is prioritized to determine boundaries. This achieves the goal of reducing development costs and shortening the development cycle.

[0051] This application employs a multi-level motion interference method to ensure that the vehicle door does not detach from the side panel during a side collision, and the entire vehicle moves laterally with the barrier, reducing the amount of barrier intrusion and thus protecting the safety of the occupants.

[0052] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various different choices and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention is defined by the claims and their equivalents.

Claims

1. A structure that prevents a vehicle door from slipping off during a side impact, characterized in that, The structure includes: The anti-slip post (6) includes a base (13), a handle (14), and anti-slip double balls. The base (13) is fixed to the lower side corner of the rear door (1) by bolts. The handle (14) is located above the base (13). Anti-slip double balls are located above the handle (14). The anti-slip double balls are connected vertically. Anti-slip groove (7) is provided on the side wall (5). The anti-slip groove (7) is opposite to the anti-slip post (6). The anti-slip groove (7) includes a double-layer baffle and a mounting hole (19). The anti-slip groove (7) is fixedly connected to the extruded aluminum alloy threshold (18) by FDS screws and mounting holes (19). The double-layer baffle and the anti-slip double ball form a multi-level matching connection. Under normal conditions, the anti-slip groove (7) and the anti-slip column (6) are fitted together to ensure that the door can be opened and used normally. In the event of a collision, when the rear door (1) rolls over, the anti-slip double balls on the anti-slip column (6) contact the anti-slip groove (7) and apply force, preventing the door from being pulled off through multiple mutual interferences. The anti-slip double ball includes an upper ball (15) and a lower ball (16), both balls having the same radius, and the anti-slip double ball is used for multi-level limiting; The double-layer baffle has an anti-detachment hole (20) between them. The anti-detachment hole (20) includes an inner anti-detachment hole (21) and an outer anti-detachment hole (22). The inner anti-detachment hole (21) and the outer anti-detachment hole (22) are used to interfere with the edge of the anti-slip double ball to prevent the rear door (1) from slipping off. During a collision, the first level of contact occurs when the lower ball (16) on the anti-skid post (6) interferes with the edge of the inner anti-detachment hole (21) of the anti-skid groove (7). If the first level of contact fails to hold the rear door (1), the upper ball (15) on the anti-skid post (6) and the edge of the inner anti-detachment hole (21) of the anti-skid groove (7) make a second level of contact. If the second level of contact also fails, the upper ball (15) on the rear anti-skid post (6) and the edge of the outer anti-detachment hole (22) of the anti-skid groove make a third level of contact.

2. The structure for preventing door slippage in a side impact as described in claim 1, characterized in that, The side panel (5) is also provided with a rear door upper hinge (9), a rear door lower hinge (10), and a rear door latch (17). The anti-slip post (6) is distributed at multiple points with the rear door upper hinge (9), the rear door lower hinge (10), and the rear door lock body (11). The rear door latch (17) cooperates with the rear door lock body (11) to achieve the protective function.

3. The structure for preventing door slippage in a side impact as described in claim 1, characterized in that, The base (13) is an arc-shaped structure with two symmetrical mounting holes (12) on it. The bolt is an M8 bolt, and the base (13) is fixed to the lower side corner of the rear door (1) by the M8 bolt.

4. The structure for preventing door slippage in a side impact as described in claim 1, characterized in that, The handle (14) is located in the center above the base (13). The handle (14) is a solid hexagonal prism structure with a conical shape, which is used to enhance the resistance to pull-out fracture.

5. The structure for preventing door slippage in a side impact as described in claim 1, characterized in that, The double-layer baffle on the anti-slip groove (7) is matched with the anti-slip double ball in multiple stages to form an anti-detachment relationship, so as to better ensure the connection.

6. The structure for preventing door slippage in a side impact as described in claim 1, characterized in that, A sealing sleeve (23) is provided between the anti-slip groove (7) and the anti-slip column (6). When the rear door (1) is closed, the anti-slip column (6) and the sealing sleeve (23) maintain a gap of more than 5mm to ensure normal opening. When the rear door (1) moves, the movement trajectory of the anti-slip column (6) and the sealing sleeve (23) have a minimum safety gap of 3mm.

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