Anti-collision structure for opening door of automobile

Abstract

The utility model provides a kind of anti-collision structure of car door opening, including door, further have: sub hinge, with the mounting piece one for installing in door, and with the fixed bushing of mounting piece one;Female hinge, with the mounting piece two of installing in car body B column, and with the fixed sleeve of mounting piece two, the bushing and sleeve plug-in cooperation can rotate, its rotation axis and the rotation axis of door coaxial;Angle limiting component, with the lower limit sleeve piece of being fixed in sleeve, and with the upper limit sleeve piece of plug-in axial movement of bushing, the upper limit sleeve piece is located in sleeve and lower limit sleeve piece cooperation forms movable limit;Unset component, with the torsion assembly of being rotatable and being installed on door, and the pull rope of being fixed in torsion assembly end portion, the pull rope is reeled by torsion assembly rotation.The utility model has active door anti-collision logic, realizes guiding user to observe the environment around door;And support phased opening, effectively reduce the collision probability when door opening.

Description

Technical Field

[0001] This utility model relates to the field of automotive door anti-collision technology, specifically an anti-collision structure for opening automotive doors. Background Technology

[0002] In current automotive designs, door opening often results in collisions due to drivers or passengers failing to observe the external environment (such as oncoming vehicles, pedestrians, bicycles, or obstacles), causing the door to open suddenly. These accidents are particularly common in urban roads and parking areas and are known as "door-opening kills." Traditional door structures typically rely solely on mechanical locks and hinges for opening and closing, lacking effective mechanisms to limit the opening angle and timing. While some newer vehicles are equipped with electronic warning systems (such as blind spot monitoring), these are costly, power-dependent, and unable to provide physical protection in the event of power failure or system malfunction. Therefore, it is difficult to provide effective physical collision protection for all types of vehicles (especially older models) without the need for electronic systems.

[0003] Furthermore, most commercially available mechanical limit devices are designed with a fixed maximum opening angle. They lack a mechanism to actively guide users to open and observe in stages, requiring users to rely entirely on their own safety awareness to perform the 'slight opening observation—confirm safety—fully open' operation. Especially in confined spaces or when visibility is obstructed, existing mechanical limit devices, due to their fixed angle design, are difficult to adapt to the observation needs of different scenarios, posing significant safety hazards.

[0004] Therefore, there is an urgent need for a car door anti-collision structure that is simple in structure, requires no external energy, has active anti-collision logic, supports phased opening, and has emergency protection functions, so as to effectively reduce the risk of traffic accidents caused by blindly opening doors.

[0005] Therefore, we provide a collision protection structure for car doors. Utility Model Content

[0006] The main purpose of this utility model is to provide an anti-collision structure for car doors, which can effectively solve the problem in the background art of collision between the car door and external objects caused by insufficient observation before opening the door.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A collision avoidance structure for a car door, including the door, and further comprising: A hinge component having a mounting component for mounting to a vehicle door and a sleeve for fixing to the mounting component; The female hinge has a second mounting part installed on the B-pillar of the vehicle body, and a sleeve fixed to the second mounting part. The sleeve is inserted into the sleeve and can rotate, and its rotation axis is coaxial with the rotation axis of the door. Angle limiting assembly has a lower limiting kit fixed inside the sleeve and an upper limiting kit that is inserted into the sleeve and moves axially. The upper limiting kit is located inside the sleeve and cooperates with the lower limiting kit to form a movement limit. The release assembly has a rotatable torsion assembly mounted on the door and a pull cord fixed to the end of the torsion assembly. The pull cord is wound up by the rotation of the torsion assembly, causing the pull cord to pull the upper and lower restraining kits away from each other and release the movement restriction.

[0008] Preferably, the upper limiting kit has a movable disk, a prism, and upper teeth. The movable disk is slidably disposed within the sleeve and its upper end is fixed to the prism inserted into the sleeve. A return spring is provided between the upper side of the movable disk and the sleeve. The upper teeth are fixed downward to the lower end of the prism, and multiple upper teeth are provided and distributed in a ring.

[0009] Preferably, the lower limiting kit has a column and a lower tooth, the column has a lower tooth fixed to its top, and the lower tooth has multiple teeth facing upwards that mesh with the upper tooth.

[0010] Preferably, the upper and lower teeth mesh, and the tooth profile of the upper and lower teeth has an inclined surface that allows rotational engagement in the closing direction of the door, and a vertical limiting surface that has a locking function in the opening direction. The upper and lower teeth can rotate unidirectionally in the closing direction of the door, thus limiting and locking in the opening direction of the door.

[0011] Preferably, when the door is fully closed to the vehicle body, the upper limiting kit and the lower limiting kit cooperate to form an active included angle α with relative rotation in the door opening direction, wherein 5°≤α≤15°.

[0012] Preferably, the column has a short column one, a torsion ring and a short column two arranged sequentially from bottom to top. Both the short column one and the short column two have grooves for installing the torsion ring on one side, and the torsion ring can be elastically twisted.

[0013] Preferably, a guide post is fixed to the top of the sub-hing, and a groove is machined on the upper end of the guide post. The pull rope can change the pulling direction through the guide post to pull the upper limiting kit upward.

[0014] Preferably, the torsion assembly has a spool and a handle. The spool is rotatably connected to the door, with one end of the spool located inside the door and fixed to a pull cord, and the other end fixed to a handle located inside the door.

[0015] Preferably, the short post one is fixed to the sleeve by a locking screw, the sleeve is machined with a mounting hole for the locking screw, and the short post one is machined with a matching threaded hole.

[0016] Preferably, the outer periphery of the insert is machined with an annular groove, and the sleeve is threaded with a limiting screw, one end of which extends to the annular groove to restrict the insert within the sleeve.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. Implement a phased door opening logic of "slight opening for observation - safety confirmation - full opening"; when the door is closed, the upper and lower limiting components in the angle limiting assembly engage, allowing the door to rotate only a preset small angle α (5°≤α≤15°) in the opening direction. This slightly open state is sufficient to provide a field of vision for observing the external environment, avoiding obstruction of the view by the vehicle body, effectively guiding users to actively check for pedestrians, vehicles, or other obstacles around them before fully opening the door, significantly reducing the risk of "door-opening kill" accidents.

[0018] 2. A one-way limiting structure ensures passive safety. The tooth profile of the upper and lower teeth is designed such that there is a mating inclined surface in the closing direction of the door, allowing free rotation; while a vertical limiting surface is provided in the opening direction, forming a rigid lock. Therefore, the door cannot be opened further after being slightly opened to angle α unless the restriction is actively released by the release component. This one-way limiting mechanism can prevent the door from being opened too wide due to accidental contact, wind force, or inertia, thus improving safety.

[0019] 3. The unlocking operation guides users to turn their heads to observe, reinforcing safe behavioral habits; the handle of the unlocking component is located on the inside of the door, close to the occupant's upper arm, requiring the use of the arm furthest from the door to turn the body to operate. This action prompts the occupant to turn their face towards the outside of the door, facilitating observation of rear dynamics, integrating safe observation behavior into the unlocking process, and forming a behavioral guide for proactive collision avoidance.

[0020] 4. It features elastic buffering and automatic reset capabilities, enhancing emergency tolerance; the lower limit assembly has a torsion ring in the middle of the pillar that can be elastically twisted. When the door is in a slightly open locked state and the user accidentally applies a large opening force, the torsion ring undergoes controllable elastic deformation to absorb impact energy and prevent structural rigidity damage; after the external force is removed, the torsion ring automatically resets and generates an auxiliary rebound force to help the door close quickly, protecting the integrity of the mechanism and providing support for emergency avoidance.

[0021] 5. Purely mechanical structure, requiring no external energy source, and widely applicable; relying on mechanical linkage to achieve collision avoidance function, without depending on electricity, sensors or electronic control systems, it has the advantages of simple structure, low cost, high reliability and convenient maintenance, and is especially suitable for the safety upgrade of ordinary vehicles and older models that are not equipped with electronic blind spot monitoring systems. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a structural diagram of the present invention in its installed state.

[0024] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0025] Figure 3 This is an exploded view of part of the structure of this utility model.

[0026] Figure 4 This utility model Figure 3 A schematic diagram of the structure explosion from another perspective.

[0027] Figure 5 This is a partial structural diagram of the present utility model.

[0028] Figures 1-5 middle: 100. Car door; 1. Sub-hinge; 11. Mounting component one; 12. Insert sleeve; 2. Female hinge; 21. Mounting component two; 22. Bundle sleeve; 3. Upper limiting kit; 31. Movable plate; 32. Prism; 33. Upper tooth; 34. Return spring; 4. Lower limiting kit; 41. Column; 411. Short column one; 412. Torsion ring; 413. Short column two; 42. Lower tooth; 5. Guide post; 6. Pull rope; 7. Torque assembly; 71. Reel; 72. Twist handle. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments. Example

[0030] like Figures 1-5As shown, an anti-collision structure for a car door includes a car door 100, and also has a sub-hing 1 and a female hinge 2. The sub-hing 1 has a mounting part 11 for mounting on the car door 100, and a sleeve 12 fixed to the mounting part 11. The female hinge 2 has a mounting part 21 for mounting on the B-pillar of the vehicle body, and a retaining sleeve 22 fixed to the mounting part 21. The sleeve 12 and the retaining sleeve 22 are inserted and rotated, and their rotation axis is coaxial with the rotation axis of the car door 100, and can rotate with the opening of the car door 100. The retaining sleeve 22 is provided with The limited angle assembly has a lower limiting kit 4 fixed in the sleeve 22 and an upper limiting kit 3 that is inserted into the sleeve 12 and moves axially. The upper limiting kit 3 is located in the sleeve 22 and cooperates with the lower limiting kit 4 to form an activity restriction. The door 100 is provided with a release assembly, which has a rotatable torsion assembly 7 installed on the door 100 and a pull rope 6 fixed to the end of the torsion assembly 7. The pull rope 6 is wound up by the rotation of the torsion assembly 7, so that the pull rope 6 pulls the upper limiting kit 3 and the lower limiting kit 4 away from each other and releases the activity restriction.

[0031] It should be noted that the reference Figure 1 and Figure 2 The door 100 is in a closed state with respect to the vehicle body. This design does not provide illustrations of the vehicle body and hinge structures. The sub-hinge 1 is fixed to the door 100 by bolts or rivets via its mounting part 11. The female hinge 2 is fixed to the vehicle body by bolts or rivets via its mounting part 21. Both mounting parts 11 and 21 have mounting holes for installation, fixing the sub-hinge 1 and female hinge 2 in their corresponding positions. Furthermore, the mounting parts 21 and 11 in this design are of appropriate size to accommodate the installation gap between the vehicle body and the door 100, avoiding any obstruction to the opening or closing of the door 100. The torsion assembly 7 is positioned near the upper arm, requiring body twisting for operation. Its location is designed according to actual needs, and a reminder label is placed on it to indicate operation.

[0032] In this embodiment, to prevent collisions with the car door 100 due to delayed observation, the specific operation method is as follows: When opening the car door 100, the user needs to manually rotate the torsion assembly 7 using the arm away from the car door 100 to twist the body position, creating a position that allows for easy observation of the dynamics of the side where the car door 100 is opened. After observation, the user can rotate the torsion assembly 7 to retract the pull rope 6 on the torsion assembly 7. The pull of the pull rope 6 will lift the upper restraint kit 3, and the pull rope 6 will pull the upper restraint kit 3 to release the movement restriction from the lower restraint kit 4. At this time, the car door 100 can be opened by unlocking the door lock, thus reducing the risk of collisions with the car door 100.

[0033] The upper limiting assembly 3 has a movable disk 31, a prism 32, and upper teeth 33. The movable disk 31 is slidably disposed within the sleeve 22 and its upper end is fixed to the prism 32 inserted into the sleeve 12. A return spring 34 is provided between the upper side of the movable disk 31 and the sleeve 12. The upper teeth 33 are fixed to the lower end of the prism 32, and there are multiple upper teeth 33 arranged in a ring. The lower limiting assembly 4 has a column 41 and lower teeth 42. The top of the column 41 is fixed with lower teeth 42, and there are multiple lower teeth 42 that mesh with the upper teeth 33.

[0034] It should be noted that the inside of the sleeve 22 is hexagonal, which corresponds to the hexagonal prism of the prism 32, thus creating axial movement. The movable disk 31 slides inside the sleeve 22 and is sleeved on the prism 32 by the return spring 34. The bottom of the return spring 34 abuts against the movable disk 31. After sliding upward, it is reset, forming a meshing and locking of the lower tooth 42 and the upper tooth 33.

[0035] To facilitate the pulling of the upper limiting kit 3 by the pull rope 6, a guide post 5 is fixed to the top of the sub-hing 1. The upper end of the guide post 5 is machined with a groove. The pull rope 6 can change the pulling direction through the guide post 5 to pull the upper limiting kit 3 upward. To facilitate smooth sliding between the pull rope 6 and the guide post 5, lubricant is applied to the guide post 5 and the pull rope 6 for lubrication.

[0036] Optionally, to facilitate the winding of the pull rope 6, the twisting assembly 7 has a spool 71 and a handle 72. The spool 71 is rotatably connected to the door 100. One end of the spool 71 is located inside the door 100 and fixed to the pull rope 6, while the other end is fixed to the handle 72 located inside the door 100.

[0037] It should be noted that both ends of the pull rope 6 have locking pins. A slot for inserting the locking pin is provided at the end of the reel 71, and a fixing screw is provided on the reel 71 to secure the locking pin of the pull rope 6. The top of the prism 32 has an insertion groove for inserting the locking pin, and the locking pin is fixed to the top of the prism 32 by a fixing plate and screws; this allows for easy replacement of the pull rope 6 later. The reel 71 is mounted to the door 100 using a bearing mounting method. The handle 72 is provided to facilitate the rotation of the reel 71 and its shape can be customized according to actual needs. Example

[0038] like Figure 5As shown, based on Embodiment 1, this embodiment further includes: upper teeth 33 and lower teeth 42 meshing, the tooth profiles of upper teeth 33 and lower teeth 42 having inclined surfaces that allow the door 100 to rotate in the closing direction, and vertical limiting surfaces that have a locking function in the opening direction. Upper teeth 33 and lower teeth 42 can rotate unidirectionally along the closing direction of the door 100, thus limiting and locking it along the opening direction of the door 100. When the door 100 is completely closed to the vehicle body, the upper limiting kit 3 and lower limiting kit 4 cooperate to form an active included angle α with relative rotation in the opening direction of the door 100, where 5°≤α≤15°.

[0039] It should be noted that in this embodiment, the number of upper teeth 33 and lower teeth 42 is equal, with twelve in each case, and they cooperate to form a unidirectional rotatable structure. In this embodiment, when the door 100 and the vehicle body are closed, the door 100 has an active angle α that restricts the outward opening of the upper teeth 33 and lower teeth 42. By setting the active angle α, this embodiment preferably sets the active angle α to 15°, which can create the condition for slightly opening the door 100, thereby obtaining a larger viewing angle and avoiding the vehicle body from obstructing the view. When the door 100 is opened to 15°, its unidirectional rotation restriction will prevent the door 100 from continuing to open, further reducing the possibility of collisions caused by insufficient observation, thus achieving the purpose of avoiding collisions. When the door is in a 15° slightly open locked state and is not unlocked, if the user accidentally applies a large outward opening force, this force will be transmitted to the column 41 of the lower limiting kit 4 through the angle limiting component. The torsion ring 412 in the middle of the pillar 41 is designed to be elastic, which can undergo controllable elastic torsional deformation, thereby absorbing part of the impact energy and avoiding structural rigidity damage; and automatically resets after the external force is removed, while its reset force can assist the door 100 to rebound and close. Example

[0040] like Figures 3-4 As shown, based on Embodiment 2, this embodiment further includes: the column member 41 has a short column 411, a torsion ring 412, and a short column 413 arranged sequentially from bottom to top. Both short column 411 and short column 413 have grooves machined on their nearest side for mounting the torsion ring 412. The torsion ring 412 is elastically torsionable and is made of spring steel and a notched elastic ring with a maximum torsion angle of 10°, using materials found in existing technology. For a specific shape, refer to [reference needed]. Figure 3 , Figure 4 Furthermore, it has an opening on one side, and its column is axially rotated during torsional deformation.

[0041] It should be noted that after the car door 100 is opened, due to the setting of the movable angle α, the car door 100 is in a slightly open state with the car body, which is conducive to observing the environment on the side of the car door 100. However, when the car door 100 is slightly opened to the maximum angle, the setting of the lower tooth 42 and the upper tooth 33 prevents the door from opening further. At this time, it is necessary to unlock and hold the lower tooth 42 and the upper tooth 33 by rotating the torsion component 7 in order to continue to open the car door 100, thereby enhancing the ability to observe the surrounding environment.

[0042] If a potential collision occurs suddenly in a short period of time and the door 100 is slightly open, without timely twisting of the torsion assembly 7, the door 100 can be closed by pulling it directly or by pushing it outwards. This causes the torsion ring 412 to be elastically twisted. The elastic restoring force prevents the door from opening further and colliding with external objects, instead using the force to close the door, thus enhancing its collision resistance and improving safety. Example

[0043] like Figures 3-4 As shown, based on Embodiment 3, this embodiment also includes: The short post 411 and the sleeve 22 are fixed together by locking screws. The sleeve 22 has mounting holes for the locking screws, and the short post 411 has matching threaded holes. This fixes the short post 411 and the sleeve 22 together, and also facilitates installation and disassembly.

[0044] The outer periphery of the insert 12 is machined with an annular groove, and a limit screw is threaded onto the retaining sleeve 22. One end of the limit screw extends to the annular groove, restricting the insert 12 within the retaining sleeve 22. This achieves a restriction on the movement of the insert 12 and the retaining sleeve 22, which is beneficial for the overall structural installation.

[0045] The preferred embodiments of the present invention disclosed above are merely illustrative of the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific implementations. The present invention is not limited to the above embodiments; the embodiments and descriptions in the specification are merely outlining the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A collision avoidance structure for a car door, comprising a door (100), characterized in that, It also has: The sub-hinge (1) has a mounting part (11) for mounting to the door (100) and a sleeve (12) fixed to the mounting part (11). The female hinge (2) has a mounting part two (21) installed on the B pillar of the vehicle body, and a sleeve (22) fixed to the mounting part two (21). The sleeve (12) is inserted into the sleeve (22) and can rotate. Its rotation axis is coaxial with the rotation axis of the door (100). Angle limiting assembly has a lower limiting kit (4) fixed inside a sleeve (22) and an upper limiting kit (3) that is axially movable and inserted into a sleeve (12). The upper limiting kit (3) is located inside the sleeve (22) and cooperates with the lower limiting kit (4) to form an active limit. The release assembly has a rotatable torsion assembly (7) mounted on the door (100) and a pull cord (6) fixed to the end of the torsion assembly (7). The pull cord (6) is wound up by the rotation of the torsion assembly (7), causing the pull cord (6) to pull the upper restraint kit (3) and the lower restraint kit (4) away from each other and release the movement restriction.

2. The anti-collision structure for automobile door opening according to claim 1, characterized in that, The upper limiting kit (3) has a movable disk (31), a prism (32) and an upper tooth (33). The movable disk (31) is slidably disposed in the sleeve (22) and its upper end is fixed to the prism (32) inserted in the sleeve (12). A return spring (34) is provided between the upper side of the movable disk (31) and the sleeve (12). The upper tooth (33) is fixed to the lower end of the prism (32) with its tooth surface facing downward. Multiple teeth are provided and distributed in a ring.

3. The anti-collision structure for opening car doors according to claim 2, characterized in that, The lower limiting kit (4) has a column (41) and a lower tooth (42). The column (41) has a lower tooth (42) fixed on its top. The lower tooth (42) has multiple teeth facing upward and meshing with the upper tooth (33).

4. The anti-collision structure for opening car doors according to claim 3, characterized in that, The upper tooth (33) meshes with the lower tooth (42). The tooth profile of the upper tooth (33) and the lower tooth (42) has an inclined surface that allows the door (100) to rotate in the closing direction and a vertical limiting surface that has a locking function in the opening direction. The upper tooth (33) and the lower tooth (42) can rotate unidirectionally in the closing direction of the door (100), which can limit and lock in the opening direction of the door (100).

5. The anti-collision structure for opening a car door according to claim 4, characterized in that, When the door (100) is completely closed to the vehicle body, the upper limiting kit (3) and the lower limiting kit (4) cooperate to form an active angle α with relative rotation of the opening direction of the door (100), wherein the active angle α is 5°≤α≤15°.

6. The anti-collision structure for opening a car door according to claim 3, characterized in that, The column (41) has a short column one (411), a torsion ring (412) and a short column two (413) arranged sequentially from bottom to top. The short column one (411) and the short column two (413) are both machined with a groove for installing the torsion ring (412) on one side. The torsion ring (412) can be elastically twisted.

7. The anti-collision structure for opening a car door according to claim 1, characterized in that, The top of the sub-hing (1) is fixed with a guide post (5), and the upper end of the guide post (5) is machined with a groove. The pull rope (6) can pull the upper limiting kit (3) upward by changing the pulling direction through the guide post (5).

8. The anti-collision structure for opening a car door according to claim 1, characterized in that, The torsion assembly (7) has a spool (71) and a handle (72). The spool (71) is rotatably connected to the door (100). One end of the spool (71) is located inside the door (100) and fixed to the pull rope (6). The other end is fixed to the handle (72) located inside the door (100).

9. The anti-collision structure for opening a car door according to claim 6, characterized in that, The short post (411) and the sleeve (22) are fixed together by locking screws. The sleeve (22) has mounting holes for locking screws, and the short post (411) has matching threaded holes.

10. The anti-collision structure for opening a car door according to claim 1, characterized in that, The outer periphery of the insert (12) is machined with an annular groove, and the sleeve (22) is threaded with a limiting screw. One end of the limiting screw extends to the annular groove to restrict the insert (12) in the sleeve (22).

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