Connection device for a subframe and vehicle

Abstract

The utility model discloses a connecting device of auxiliary frame and vehicle, the utility model relates to vehicle field, the connecting device of auxiliary frame, connecting device is used for fixedly connected between auxiliary frame and the longitudinal beam of vehicle, and connecting device includes: device body, device body includes first body and second body, first body and second body arrange along first direction, and first body and second body fixed connection, and first body and second body jointly define the collapse space. Therefore, first body and second body can optimize the energy absorption path when connecting device collision, is favorable to the energy absorption effect of reinforcing connecting device, also is favorable to the energy transmission path of optimizing connecting device, is favorable to reducing the risk that driver's cabin is invaded, and first body and second body jointly define the collapse space, are favorable to device body deforming energy absorption to the collapse space, are favorable to further reinforcing the energy absorption effect of connecting device.

Description

Technical Field

[0001] This utility model relates to the field of vehicles, and in particular to a subframe connection device and a vehicle having the connection device. Background Technology

[0002] In related technologies, existing subframes are connected to the vehicle's longitudinal beams via connecting devices. The device itself uses a single-layer solid structure, resulting in a single energy absorption path during a collision. This limits the energy absorption effect of the connecting device and leads to an unreasonable energy transfer path, making the cab susceptible to subframe intrusion. The existing connecting devices are rigidly connected to the vehicle's longitudinal beams, making it difficult for them to effectively absorb energy during a collision, further limiting their energy absorption effect. The rigid connection method can also deform or break due to insufficient strength, resulting in insufficient structural stability of the connecting device. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a subframe connection device that enhances the energy absorption effect of the connection device, optimizes the energy transfer path of the connection device, and reduces the risk of the subframe intruding into the cab.

[0004] This utility model further proposes a vehicle.

[0005] According to a first aspect of the present invention, a subframe connection device is provided. The connection device is used to fix the subframe and the longitudinal beam of the vehicle. The connection device includes a device body, which includes a first body and a second body. The first body and the second body are arranged along a first direction and are fixedly connected. The first body and the second body together define a collapsible space.

[0006] According to the subframe connection device of the first aspect of the utility model, the connection between the first body and the second body can optimize the energy absorption path of the connection device during a collision, which is beneficial to enhancing the energy absorption effect of the connection device, and also beneficial to optimizing the energy transfer path of the connection device, which is beneficial to reducing the risk of the cab being intruded by the vehicle's structural components. The first body and the second body together define the crumple zone, which can further enhance the energy absorption effect of the connection device.

[0007] In some examples of this utility model, the first body has a first wall portion, the first wall portion and the second body are spaced apart along a first direction, a collapse space is located between the first wall portion and the second body, a first collapse groove is formed on the side of the first wall portion away from the second body, the first collapse groove extends along a second direction to the edge of the first wall portion, and the first direction and the second direction are perpendicular.

[0008] In some examples of this utility model, along the third direction, the first collapsing groove is located at the middle position of the first wall portion, and the first direction, the second direction and the third direction are perpendicular to each other.

[0009] In some examples of this utility model, the first body also has a second wall portion, which is disposed around the first wall portion along the circumferential edge of the first wall portion. The second wall portion is connected between the first wall portion and the second body, and the first wall portion, the second wall portion, and the second body together define a collapsible space.

[0010] In some examples of this utility model, a second collapse groove is formed on the side of the second wall portion away from the collapse space, and the second collapse groove extends along the first direction to the edge of the second wall portion.

[0011] In some examples of this invention, along a third direction, the second collapsing groove and the first collapsing groove are located at the same position on the connecting device.

[0012] In some examples of this utility model, the first wall portion includes a first sub-wall portion and a second sub-wall portion, the first sub-wall portion and the second sub-wall portion are adjacent to each other along a third direction, the first sub-wall portion and the second sub-wall portion are bent and connected to form a first collapse groove on the side of the first wall portion away from the second body, and the first direction, the second direction and the third direction are perpendicular to each other.

[0013] In some examples of this utility model, the first direction is the height direction of the connecting device.

[0014] In some examples of this utility model, the connecting device further includes: a connecting structure, which is installed on the device body and is used to connect with the longitudinal beam. The connecting structure is configured to break when the force reaches a preset value.

[0015] In some examples of this utility model, the connecting structure penetrates the device body along a first direction.

[0016] In some examples of this utility model, the first wall portion has a third sub-wall portion, the third sub-wall portion and the second body are spaced apart along the first direction, the third sub-wall portion is perpendicular to the first direction, and the connecting structure passes through the third sub-wall portion.

[0017] The vehicle according to a second aspect of the present invention includes the above-described subframe connecting device.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 A schematic diagram of the anti-collision device and subframe of a vehicle according to an embodiment of the present utility model; Figure 2 according to Figure 1 Enlarged view of point B.

[0020] Figure label: Connecting device 110; Device body 120; first body 121; second body 122; first wall portion 123; first collapse groove 124; second wall portion 125; first sub-wall portion 126; second sub-wall portion 127; third sub-wall portion 128; first through hole 129; Collapse space 130; Connection structure 140; Subframe 200. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] The following is for reference. Figures 1-2 The following describes a subframe connection device 110 according to an embodiment of the present invention. The connection device 110 can be used to connect the subframe 200 and the longitudinal beams of the vehicle.

[0023] like Figure 2 As shown, according to the first aspect embodiment of the present invention, the connecting device 110 of the subframe 200 is used to fixably connect between the subframe 200 and the longitudinal beam of the vehicle. The connecting device 110 includes: a device body 120, the device body 120 including a first body 121 and a second body 122, the first body 121 and the second body 122 are arranged along a first direction and the first body 121 and the second body 122 are fixedly connected, and the first body 121 and the second body 122 together define a collapsible space 130.

[0024] The first body 121 can be fixedly connected to the subframe 200 by bolts, snap-fit, or other means. The first body 121 can be formed by casting or stamping, and can be made of high-strength low-alloy steel, hot-formed steel, or other materials. This application does not provide specific details, and appropriate materials can be selected according to actual conditions. The second body 122 can be fixedly connected to the subframe 200 by bolts, snap-fit, or other means. The second body 122 can be formed by casting or stamping, and can be made of high-strength low-alloy steel, hot-formed steel, or other materials. This application does not provide specific details, and appropriate materials can be selected according to actual conditions.

[0025] As one embodiment, the device body 120 can be fixedly connected to the longitudinal beam of the vehicle by bolts. As another embodiment, the device body 120 can be fixedly connected to the longitudinal beam of the vehicle by snap-fit. This application will specifically describe the example of the device body 120 being fixedly connected to the longitudinal beam of the vehicle by bolts.

[0026] The second body 122 can be formed by mold casting or stamping, and can be made of high-strength low-alloy steel, hot-formed steel, or other materials. As one embodiment, the first body 121 and the second body 122 can be fixedly connected by welding. As another embodiment, the first body 121 and the second body 122 can be fixedly connected by bolts. Exemplarily, a groove can be provided on the first body 121, and a protrusion matching the size of the groove can be provided on the second body 122. The protrusion is embedded in the groove, serving a positioning function, which helps to fix the relative position of the first body 121 and the second body 122, reducing the risk of misalignment.

[0027] The first direction can be the height direction of the vehicle, or it can be the width direction of the vehicle (i.e., Figure 1 The Y direction in the equation), the first direction can also be the length direction of the vehicle (i.e., the Y direction). Figure 1(X direction in the text), this application uses the vehicle's height direction as an example for explanation. The arrangement of the first body 121 and the second body 122 along the first direction provides a path for the collapse deformation of the device body 120, allowing the collision force to be transferred to the first body 121 and the second body 122, thus dispersing the collision force and reducing the risk of stress concentration in the device body 120. The fixed connection of the first body 121 and the second body 122 is beneficial to the structural integrity of the connecting device 110. The connection of the first body 121 and the second body 122 can optimize the energy absorption path of the connecting device 110 during a collision, which is beneficial to enhancing the energy absorption effect of the connecting device 110 and optimizing the energy transfer path of the connecting device 110, reducing the risk of vehicle structural components intruding into the passenger compartment. The collapse space 130 can provide space for the deformation of the connecting device 110 during a collision. The first body 121 and the second body 122 can absorb collision energy through their own compression or deformation, which is beneficial to further enhance the energy absorption effect of the connecting device 110. By setting the collapse space 130 in the connecting device 110, the weight of the connecting device 110 can also be reduced, which is beneficial to achieving lightweighting of the connecting device 110.

[0028] According to some embodiments of this utility model, such as Figure 2 As shown, the first body 121 has a first wall portion 123, the first wall portion 123 and the second body 122 are spaced apart along a first direction, and the collapse space 130 is located between the first wall portion 123 and the second body 122. A first collapse groove 124 is formed on the side of the first wall portion 123 away from the second body 122. The first collapse groove 124 extends along a second direction to the edge of the first wall portion 123. The first direction and the second direction are perpendicular.

[0029] The first wall portion 123 can be manufactured through processes such as stamping and cutting. The first wall portion 123 can have a through hole communicating with the collapse space 130, which helps reduce the weight of the connecting device 110, achieving the goal of lightweighting the connecting device 110, and also enhances the collapse capacity and energy absorption effect of the connecting device 110. The first collapse groove 124 can be a V-shaped or U-shaped groove structure. The collapse space 130 is located between the first wall portion 123 and the second body 122, which facilitates the deformation and energy absorption of the first body 121 and the second body 122. This helps the connecting device 110 disperse the stress perpendicular to the first direction, reducing the risk of stress concentration. The first collapse groove 124 can be manufactured through processes such as laser cutting or molding. The second direction is... Figure 1 In the Y direction, when the subframe 200 is impacted, the first crumple groove 124 extends along the second direction to the edge of the first wall portion 123, which is conducive to the deformation and energy absorption of the first body 121, thereby further enhancing the energy absorption capacity of the connecting device 110, and thus enabling the connecting device 110 to absorb more impact energy.

[0030] According to some embodiments of the present invention, along a third direction, the first collapsible groove 124 is located at the middle of the first wall portion 123, and the first direction, the second direction and the third direction are perpendicular to each other.

[0031] In this application, a third party is provided as... Figure 1 Taking the X-direction as an example, the middle position refers to the position between the two ends of the first wall portion 123 along the third direction. This application uses the example of the first collapsible groove 124 being located at the center of the first wall portion 123. The first collapsible groove 124 being located at the center of the first wall portion 123 makes the first wall portion 123 symmetrically distributed on both sides of the first collapsible groove 124 along the third direction. This is beneficial for the first wall portion 123 to absorb energy through symmetrical deformation when the connecting device 110 is subjected to force. It can also make the impact force on the device body 120 evenly distributed along the first wall portion 123 on both sides of the first collapsible groove 124, which helps to reduce the risk of stress concentration.

[0032] According to some embodiments of this utility model, such as Figure 2 As shown, the first body 121 also has a second wall portion 125, which is disposed around the first wall portion 123 along the circumferential edge of the first wall portion 123. The second wall portion 125 connects the first wall portion 123 and the second body 122. The first wall portion 123, the second wall portion 125 and the second body 122 together define a collapsible space 130.

[0033] The second wall portion 125 can be manufactured using processes such as stamping or welding. The second wall portion 125 is disposed around the entire circumferential edge of the first wall portion 123. The end of the second wall portion 125 facing the second body 122 is connected to the second body 122. The first wall portion 123 and the second wall portion 125 can be fixedly connected by welding. Alternatively, the first wall portion 123 and the second wall portion 125 can be integrally formed, and the second wall portion 125 can be welded to the second body 122. By providing the second wall portion 125, the first wall portion 123 and the second body 122 can be fixedly connected, fixing their relative positions and effectively defining the collapsible space 130 together with the first body 121 and the second body 122.

[0034] According to some embodiments of this utility model, such as Figure 2 As shown, a second collapse groove is formed on the side of the second wall portion 125 opposite to the collapse space 130, and the second collapse groove extends along the first direction to the edge of the second wall portion 125.

[0035] The second crumple groove can be a recessed structure on the outer peripheral wall of the second wall portion 125. The second crumple groove can be formed by processes such as stamping or cutting. There can be one, two, or three second crumple grooves. In one embodiment, one end of the second crumple groove can be adjacent to one end of the first crumple groove 124. In another embodiment, one end of the second crumple groove can be offset from one end of the first crumple groove 124. When the subframe 200 is impacted, the second crumple groove extends along the first direction to the edge of the second wall portion 125, which is more conducive to the deformation and energy absorption of the first body 121, thereby further enhancing the energy absorption capacity of the connecting device 110, and thus enabling the connecting device 110 to absorb more impact energy.

[0036] According to some embodiments of this utility model, such as Figure 2 As shown, along a third direction, the second crumple groove and the first crumple groove 124 are located at the same position on the connecting device 110. This can concentrate the crumple area of ​​the first body 121, forming a crumple channel, which facilitates the deformation and energy absorption of the connecting device 110, enhances the energy absorption effect of the connecting device 110, and improves the controllability of the crumple process. It can also make the collision energy uniformly absorbed along the crumple channel, which is beneficial to optimizing the energy absorption path and thus reducing the risk of intrusion into the cab.

[0037] According to some embodiments of this utility model, such as Figure 2 As shown, the first wall portion 123 includes a first sub-wall portion 126 and a second sub-wall portion 127. The first sub-wall portion 126 and the second sub-wall portion 127 are adjacent to each other along a third direction. The first sub-wall portion 126 and the second sub-wall portion 127 are bent and connected to form a first collapsible groove 124 on the side of the first wall portion 123 away from the second body 122. The first direction, the second direction and the third direction are perpendicular to each other.

[0038] The first sub-wall portion 126 and the second sub-wall portion 127 can be formed using processes such as stamping and mold casting. The first and second sub-wall portions 126 and 127 can be integrally formed, or they can be fixedly connected by welding. At least one of the first and second sub-wall portions 126 and 127 can be provided with a through hole communicating with the collapse space 130. This helps reduce the weight of the connecting device 110, achieves the goal of lightweighting the connecting device 110, enhances the collapse capacity of the connecting device 110, and improves its energy absorption effect. The first and second sub-wall portions 126 and 127 are connected by bending to form a first collapse groove 124, achieving the desired arrangement of the first collapse groove 124. The formation of a first collapsible groove 124 on the first body 121 induces deformation of the first body 121 under stress, which enhances the energy absorption effect of the connecting device 110. It also allows for the uniform distribution of stress in the first sub-wall portion 126 and the second sub-wall portion 127, which helps optimize the energy transfer path of the connecting device 110, reduces cab intrusion, and avoids the risk of stress concentration, thereby enhancing the structural stability of the connecting device 110. According to some embodiments of the present invention, the first direction is the height direction of the connecting device 110.

[0039] The first direction is defined as the height direction, which can constrain the collapse deformation of the device body 120 in the height direction. The connecting device 110 absorbs energy through the collapse deformation in the height direction, thereby optimizing the energy transfer path of the connecting device 110 and reducing intrusion into the cab. The direction of deformation of the collapse space 130 is consistent with the inertial direction during vehicle collision, which helps to improve the controllability of the collapse deformation. The first direction, the second direction, and the third direction are perpendicular to each other. The collapse deformation of the device body 120 is constrained in the height direction, which helps to reduce the risk of structural deformation of the connecting device 110 along the second direction and the third direction, and helps to improve the structural stability of the connecting device 110.

[0040] According to some embodiments of this utility model, such as Figure 2 As shown, the connecting device 110 further includes a connecting structure 140, which is installed on the device body 120 and is used to connect with the longitudinal beam. The connecting structure 140 is configured to break when the force reaches a preset value.

[0041] The connecting structure 140 can be constructed using bolts, pins, or other similar methods. This application uses bolts as an example for illustration. The connecting structure 140 can be formed through processes such as stamping or mold casting. Exemplarily, the connecting structure 140 can be screwed to a longitudinal beam, welded to a longitudinal beam, or mate with a nut to achieve connection with the longitudinal beam. There can be one, two, or three connecting structures 140. This application uses two connecting structures 140 per connecting device 110 as an example for detailed explanation. Each subframe 200 can be connected to multiple connecting devices 110. This application uses two connecting devices 110 per subframe 200 as an example for illustration. The arrangement of two connecting devices 110 not only improves the reliability and stability of the connecting devices 110 but also facilitates lightweight vehicle design.

[0042] The connecting structure 140 is configured to break when the force reaches a preset value. The connecting structure 140 can absorb energy through breakage. When the connecting device 110 is subjected to force, the device body 120 deforms first to absorb energy. The connecting structure 140 breaks when the force reaches the preset value, thereby achieving a further energy absorption effect. This enables the connecting device 110 to achieve a two-stage energy absorption effect, which is beneficial to further enhance the energy absorption effect of the connecting device 110 and to prevent intrusion into the cab. The two-stage energy absorption also helps to optimize the energy transmission path of the connecting device 110, which helps to reduce the risk of cab intrusion. Furthermore, after the connecting structure 140 breaks, the connecting structure 140 is disconnected from the longitudinal beam, reducing the transmission of the collision force towards the cab, which is even more beneficial to reducing the risk of cab intrusion.

[0043] For example, when the subframe 200 is impacted, the device body 120 impacts the connecting structure 140, causing the connecting structure 140 to be subjected to force. When the force on the connecting structure 140 reaches a preset force value, the connecting structure 140 is broken by the device body 120, thereby achieving the effect of the connecting structure 140 breaking when the force reaches the preset force value.

[0044] According to some embodiments of the present invention, the connecting structure 140 penetrates the device body 120 along a first direction.

[0045] In one embodiment, the first wall portion 123 has a first through hole 129, and the second body 122 has a second through hole. The first through hole 129 and the second through hole are arranged opposite to each other along a first direction. The connecting structure 140 passes through the opposite first through hole 129 and the second through hole along the first direction, so as to achieve the effect of the connecting structure 140 penetrating the device body 120 along the first direction.

[0046] For example, since the connecting structure 140 passes through the first wall portion 123 and the second body 122 along the first direction, when the subframe 200 is impacted, the connecting structure 140 is cut off by at least one of the first wall portion 123 and the second body 122, thereby achieving the effect of the connecting structure 140 breaking when the force reaches a preset value.

[0047] For example, at least one of the inner sidewalls of the first through hole 129 and the second through hole is provided with a cutting blade. When the subframe 200 is impacted, the cutting blade can cut the connecting structure 140, thereby achieving the effect of the connecting structure 140 breaking when the force reaches a preset value.

[0048] According to some embodiments of this utility model, such as Figure 2 As shown, the first wall portion 123 has a third sub-wall portion 128, the third sub-wall portion 128 and the second body 122 are spaced apart along a first direction, the third sub-wall portion 128 is perpendicular to the first direction, and the connecting structure 140 passes through the third sub-wall portion 128.

[0049] The second sub-wall portion 127 connects the first sub-wall portion 126 and the third sub-wall portion 128. The third sub-wall portion 128 can be formed using processes such as stamping and mold casting. The third sub-wall portion 128 can be a flat plate structure with rounded edges to avoid stress concentration. The third sub-wall portion 128 can have a first through hole 129 communicating with the collapse space 130, thus allowing the connecting structure 140 to pass through it. Because the third sub-wall portion 128 is perpendicular to the first direction, it facilitates the first wall portion 123 to cut the connecting structure 140 in the event of an impact to the subframe 200.

[0050] Exemplarily, the surface of the third sub-wall portion 128 may be provided with reinforcing ribs. As one embodiment, the reinforcing ribs may be distributed along the second direction. As another embodiment, the reinforcing ribs may be distributed in a third direction; as yet another embodiment, the reinforcing ribs may be distributed intersectingly along the second and third directions.

[0051] As one embodiment, the diameter of the first through hole 129 is larger than the cross-sectional area of ​​the connecting structure 140, allowing the connecting structure 140 to pass through the first through hole 129 with a certain gap. This enhances the deformation capacity of the connecting device 110 under stress, thereby improving the energy absorption effect of the connecting device 110. As another embodiment, the diameter of the first through hole 129 is approximately the same as the cross-sectional area of ​​the connecting structure 140, allowing the connecting structure 140 to pass through the first through hole 129 precisely and fit against the inner wall of the first through hole 129. This facilitates the connection structure 140 being cut off by the third sub-wall portion 128 when the stress reaches a preset value, thus reducing the risk of intrusion into the cab.

[0052] The vehicle according to a second aspect embodiment of the present invention includes the connecting device 110 described in the above embodiment. By providing the connecting device 110 in the vehicle, the structural stability of the vehicle can be improved, the energy absorption effect of the vehicle can be enhanced, the energy transfer path of the vehicle can be optimized, and the risk of intrusion into the driver's cab can be reduced.

[0053] The connecting device 110 of the subframe 200 according to the present invention, as well as other components and operations of the vehicle, are known to those skilled in the art and will not be described in detail here.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A subframe connection device, characterized in that, The connecting device is used to fix the subframe and the longitudinal beam of the vehicle together, and the connecting device includes: The device body includes a first body and a second body, the first body and the second body are arranged along a first direction, and the first body and the second body are fixedly connected, the first body and the second body together define a collapse space.

2. The subframe connecting device according to claim 1, characterized in that, The first body has a first wall portion, the first wall portion and the second body are spaced apart along the first direction, the collapse space is located between the first wall portion and the second body, a first collapse groove is formed on the side of the first wall portion away from the second body, the first collapse groove extends to the edge of the first wall portion along the second direction, the first direction and the second direction are perpendicular.

3. The subframe connecting device according to claim 2, characterized in that, Along a third direction, the first collapse groove is located at the middle of the first wall portion, and the first direction, the second direction, and the third direction are perpendicular to each other.

4. The subframe connecting device according to claim 2, characterized in that, The first body also has a second wall portion, which is disposed around the first wall portion along the circumferential edge of the first wall portion. The second wall portion is connected between the first wall portion and the second body, and the first wall portion, the second wall portion, and the second body together define the collapse space.

5. The subframe connecting device according to claim 4, characterized in that, A second collapse groove is formed on the side of the second wall portion opposite to the collapse space, and the second collapse groove extends along the first direction to the edge of the second wall portion.

6. The subframe connecting device according to claim 5, characterized in that, Along a third direction, the second crumple groove and the first crumple groove are located at the same position of the connecting device.

7. The subframe connecting device according to claim 2, characterized in that, The first wall portion includes a first sub-wall portion and a second sub-wall portion, which are adjacent to each other along a third direction. The first sub-wall portion and the second sub-wall portion are bent and connected to form the first collapse groove on the side of the first wall portion away from the second body. The first direction, the second direction and the third direction are perpendicular to each other.

8. The subframe connecting device according to claim 1, characterized in that, The first direction is the height direction of the connecting device.

9. The subframe connecting device according to any one of claims 2-7, characterized in that, The connecting device further includes a connecting structure, which is installed on the device body and is used to connect with the longitudinal beam. The connecting structure is configured to break when subjected to a preset force value.

10. The subframe connecting device according to claim 9, characterized in that, The connecting structure extends through the device body along the first direction.

11. The subframe connection device according to claim 10, characterized in that, The first wall portion has a third sub-wall portion, the third sub-wall portion and the second body are spaced apart along the first direction, the third sub-wall portion is perpendicular to the first direction, and the connecting structure passes through the third sub-wall portion.

12. A vehicle, characterized in that, Includes a subframe connection device according to any one of claims 1-11.

Images