A vehicle door anti-collision limiting device
By designing a triangular support structure anti-collision limiting device on the car door, the collision force transmission path is optimized, solving the problem of the door jamming due to large deformation during medium- and high-speed side collisions, and enabling the door to open normally after a collision.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHUNENG AUTOMOBILE CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-06-26
AI Technical Summary
Existing car doors are prone to large deformation during medium-to-high-speed side collisions, which can lead to the doors becoming stuck and unable to be opened.
A door anti-collision limiting device is designed, which forms a triangular support structure through two sets of anti-collision limiting components to optimize the collision force transmission path and limit the door. It includes a first anti-collision limiting component and a second anti-collision limiting component, which respectively pass through the slot of the door and the slot of the vehicle frame to form a stable triangular support structure.
It effectively reduces the deformation of the car door during a collision, reduces the probability of the door jamming, and ensures that the door can be opened normally after a side collision.
Smart Images

Figure CN224408915U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle door anti-collision technology, specifically a vehicle door anti-collision limiting device. Background Technology
[0002] The safety design of car door structure plays an important role in protecting the safety of the occupants. Currently, the anti-collision safety structure design of car doors in China is insufficient, resulting in large deformation of car doors when domestic cars are subjected to medium- and high-speed side collisions, and sometimes the doors get stuck and cannot be opened.
[0003] Therefore, how to optimize the force transmission path of car doors during a collision through reasonable design, so as to reduce the probability of car doors getting stuck and unable to open when a car suffers a side collision, has become an urgent technical problem to be solved. Utility Model Content
[0004] The purpose of this utility model is to provide a door anti-collision limiting device. Through two sets of first anti-collision limiting components and second anti-collision limiting components, the three form a stable triangular support anti-collision structure, which optimizes the force transmission path of the door when it is hit by a collision to a certain extent, and at the same time plays a certain limiting role for the door, thereby effectively reducing the probability of the door getting stuck and unable to be opened due to excessive deformation.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a vehicle door anti-collision limiting device, comprising: a vehicle frame, and a vehicle door assembled with the vehicle frame, wherein a plurality of contact grooves are formed on the inner sides of the upper and lower edges of the vehicle door; a plurality of slots are formed on the upper and lower edges of the vehicle frame corresponding to the contact groove positions, wherein a first anti-collision limiting component passes through the two sets of slots located on the lower edge, and a second anti-collision limiting component passes through the slots located on the upper edge; the first anti-collision limiting component and the second anti-collision limiting component are triangularly distributed to jointly optimize the force transmission path of the vehicle door when it is subjected to a collision, and at the same time play a limiting and anti-collision role for the vehicle door.
[0006] Preferably, the first anti-collision limiting component includes an insert portion and an anti-collision spring portion. The insert portion is used to pass through the slot and act with the contact groove where the door is located. The insert portion includes a horizontal support piece and an insertion piece that is vertically connected to the horizontal support piece. The insertion piece has a vertical support piece connected obliquely upward at the end away from the slot.
[0007] Preferably, the anti-collision spring section includes an insert body, the insert body having support legs extending to both sides and obliquely downward for welding to the vehicle frame; the insert body acts on a transverse support plate and has an anti-collision spring body extending obliquely upward at its end, the vertical support plate being placed behind the anti-collision spring body for its support.
[0008] Preferably, the insert body has a first mounting hole, and the transverse support plate has a third mounting hole that corresponds one-to-one with the first mounting hole.
[0009] Preferably, the anti-collision shrapnel body has a second mounting hole, and the vertical support plate has a fourth mounting hole that corresponds one-to-one with the second mounting hole.
[0010] Preferably, the second anti-collision limiting component includes a support member and a cover kit, the cover kit extending to both sides and having side welded portions, and the support member being welded perpendicularly to the center of the cover kit.
[0011] Preferably, the support member has a U-shaped structure, with one end welded to the inside of the vehicle frame and the other end passing through the slot and interacting with the contact groove.
[0012] Preferably, the side weld portion on the cover kit can be welded to the vehicle frame.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] 1. This utility model uses two sets of first anti-collision limiting components and a second anti-collision limiting component to form a stable triangular support anti-collision structure, which optimizes the force transmission path of the car door when it is hit by a collision to a certain extent, and at the same time plays a certain limiting role for the car door, thereby effectively reducing the situation where the car door is stuck and cannot be opened due to excessive deformation.
[0015] 2. By providing an insert part and a crash protection spring part, the insert part can be locked to the vehicle frame body through the slot, and the support structure formed by the transverse support piece and the third mounting hole can be used to assemble the crash protection spring part. The support leg can support and weld to the vehicle frame body, and the insert body and crash protection spring body on it act on the transverse support piece and the vertical support piece respectively, simplifying the structural design and forming a stable crash protection support structure. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the working state of the vehicle door and the vehicle frame of this utility model;
[0017] Figure 2 This is a partial disassembly diagram of the first anti-collision limiting component of this utility model;
[0018] Figure 3 for Figure 1 A magnified schematic diagram of the partial first anti-collision limiting component;
[0019] Figure 4 This is an enlarged cross-sectional view of the present invention.
[0020] Figure 5This is an enlarged structural diagram of point A in this utility model;
[0021] Figure 6 for Figure 1 A partially enlarged structural diagram;
[0022] Figure 7 This is a disassembled structural diagram of the second anti-collision limiting component of this utility model;
[0023] Figure 8 This is a schematic diagram of the disassembled structure of the car door and the car frame of this utility model.
[0024] In the diagram: 111, vehicle frame; 112, slot; 113, card slot; 211, second anti-collision limiting component; 2112, support component; 2113, cover kit; 311, first anti-collision limiting component; 3111, insert body; 3112, support leg; 3113, first mounting hole; 3114, anti-collision spring body; 3115, second mounting hole; 3211, transverse support piece; 3212, third mounting hole; 3213, insert piece; 3214, vertical support piece; 3215, fourth mounting hole; 611, vehicle door; 612, contact groove. Detailed Implementation
[0025] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The various embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0026] Please see Figures 1 to 8 The present invention preferably provides the following technical solution: a door anti-collision limiting device, comprising: a vehicle frame 111, and a door 611 assembled with the vehicle frame. The upper and lower edges of the door 611 are provided with a plurality of contact grooves 612. The upper and lower edges of the vehicle frame 111 are respectively provided with a plurality of slots 112 at the positions corresponding to the contact grooves 612. Among them, the two sets of slots 112 located at the lower edge are provided with a first anti-collision limiting component 311, and the slots 112 located at the upper edge are provided with a second anti-collision limiting component 211. The first anti-collision limiting component 311 and the second anti-collision limiting component 211 are triangularly distributed to optimize the force transmission path of the door 611 when it is hit by a collision, and at the same time play a limiting and anti-collision role for the door 611.
[0027] This application addresses the issue of large door deformation and door jamming during medium-to-high-speed side collisions by adding an anti-collision structure to the door sill side, such as... Figure 1 , 8 As shown, when the door 611 impacts the frame 111, the two sets of first anti-collision limiting components 311 located at the lower edge of the frame 111 and the second anti-collision limiting component 211 located at the upper edge form a stable triangular support anti-collision structure. This optimizes the force transmission path of the door 611 when it is impacted and also limits the door 611, thereby effectively reducing the situation where the door is jammed and cannot be opened due to excessive deformation.
[0028] As another embodiment of the present invention, the first anti-collision limiting component 311 includes an insert portion and an anti-collision spring portion. The insert portion is used to pass through the slot 112 and act with the contact groove 612 where the door 611 is located. The insert portion includes a transverse support piece 3211 and an insertion piece 3213 that is vertically connected to the transverse support piece 3211. The insertion piece 3213 has a vertical support piece 3214 that is obliquely connected to the end away from the slot 112.
[0029] Furthermore, the anti-collision spring section includes an insert body 3111, the insert body 3111 extends to both sides and obliquely downwards with support legs 3112, which can be used to weld with the frame body 111. The insert body 3111 acts on the transverse support plate 3211 and extends obliquely upwards at its end with an anti-collision spring body 3114. The vertical support plate 3214 is placed on the rear side of the anti-collision spring body 3114 and is used for its support.
[0030] In this embodiment, an insert portion and an anti-collision spring portion are provided, such as Figure 2 , 3 As shown in Figure 5, the insert portion includes a transverse support piece 3211, an insert piece 3213, and a vertical support piece 3214. The insert piece 3213 can be locked to the frame body 111 through the slot 112. The support structure formed by the transverse support piece 3211 and the third mounting hole 3212 can be used to assemble the anti-collision spring piece. The support leg 3112 can support and be welded to the frame body 111, and the insert piece 3111 and the anti-collision spring piece 3114 on it act on the transverse support piece 3211 and the vertical support piece 3214 respectively, thereby forming a stable anti-collision structure.
[0031] Furthermore, the insert body 3111 is provided with a first mounting hole 3113, the transverse support plate 3211 is provided with a third mounting hole 3212 corresponding to the first mounting hole 3113, the anti-collision bullet plate body 3114 is provided with a second mounting hole 3115, and the vertical support plate 3214 is provided with a fourth mounting hole 3215 corresponding to the second mounting hole 3115.
[0032] like Figure 2 As shown, by setting the first mounting hole 3113 and the third mounting hole 3212, and the second mounting hole 3115 and the fourth mounting hole 3215 accordingly, a stable connection can be formed when using bolts for assembly.
[0033] In another embodiment of this utility model, the second anti-collision limiting component 211 includes a support member 2112 and a cover assembly 2113. The cover assembly 2113 extends to both sides and is provided with side welded portions. The support member 2112 is welded perpendicularly to the middle of the cover assembly 2113. The support member 2112 has a U-shaped structure. One end of the support member 2112 is welded to the inner side of the vehicle frame 111, and the other end passes through the slot 112 and interacts with the contact groove 612. The side welded portions on the cover assembly 2113 can be welded to the vehicle frame 111.
[0034] like Figure 6 , 7 As shown, the second anti-collision limiting component 211 is small in size and consists of a support member 2112 and a cover assembly 2113. When a force is applied, it is transmitted by the support member 2112 and acts on the cover assembly 2113 to form a vertically distributed cross support structure, which further achieves the anti-collision effect of the top edge.
[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part. Among these, there are various ways to install detachably, such as by using a combination of plug-in and snap-fit, or by using bolts for connection, etc.
[0036] In addition, all the connections / connections mentioned in the article do not refer to direct connection of components, but rather to the formation of a better connection structure by adding or removing connecting accessories according to the specific implementation situation.
[0037] The above description of the specific embodiments of this utility model is only used to further illustrate this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-essential improvements and adjustments made to this utility model by technical engineers based on the above description of the utility model shall fall within the scope of protection of this utility model.
Claims
1. A door anti-collision limiting device, characterized in that, include: The vehicle frame (111) and the door (611) assembled with the vehicle frame, wherein the upper and lower edges of the door (611) are provided with a plurality of contact grooves (612). The upper and lower edges of the vehicle frame (111) are provided with a number of slots (112) respectively corresponding to the contact groove (612). Among them, the two sets of slots (112) located on the lower edge are provided with a first anti-collision limiting component (311), and the slots (112) located on the upper edge are provided with a second anti-collision limiting component (211). The first anti-collision limiting component (311) and the second anti-collision limiting component (211) are triangularly distributed to optimize the force transmission path of the door (611) when it is hit by a collision, and at the same time play a limiting and anti-collision role for the door (611).
2. The door anti-collision limiting device according to claim 1, characterized in that: The first anti-collision limiting component (311) includes an insert portion and an anti-collision spring portion. The insert portion is used to pass through the slot (112) and interact with the contact groove (612) where the door (611) is located. The insert portion includes a transverse support piece (3211) and an insertion piece (3213) that is vertically connected to the transverse support piece (3211). The insertion piece (3213) has a vertical support piece (3214) that is obliquely connected to the end away from the slot (112).
3. The door anti-collision limiting device according to claim 2, characterized in that: The anti-collision spring section includes an insert body (3111), and the insert body (3111) extends to both sides and downwards with supporting legs (3112) for welding to the vehicle frame body (111); The insert body (3111) acts on the transverse support piece (3211) and extends obliquely upward at its end to form an anti-collision spring piece (3114). The vertical support piece (3214) is placed on the rear side of the anti-collision spring piece (3114) and is used for its support.
4. The door anti-collision limiting device according to claim 3, characterized in that: The insert body (3111) has a first mounting hole (3113), and the transverse support plate (3211) has a third mounting hole (3212) that corresponds one-to-one with the first mounting hole (3113).
5. A door anti-collision limiting device according to claim 4, characterized in that: The anti-collision spring body (3114) is provided with a second mounting hole (3115), and the vertical support plate (3214) is provided with a fourth mounting hole (3215) that corresponds one-to-one with the second mounting hole (3115).
6. The door anti-collision limiting device according to claim 1, characterized in that: The second anti-collision limiting component (211) includes a support member (2112) and a cover kit (2113). The cover kit (2113) extends to both sides and is provided with side welds. The support member (2112) is welded perpendicularly to the middle of the cover kit (2113).
7. A door anti-collision limiting device according to claim 6, characterized in that: The support member (2112) has a U-shaped structure. One end of the support member (2112) is welded to the inside of the frame body (111), and the other end passes through the slot (112) and interacts with the contact groove (612).
8. A door anti-collision limiting device according to claim 6, characterized in that: The side weld on the cover kit (2113) can be welded to the frame body (111).