Collision energy absorption assembly and vehicle

Abstract

The present application relates to a crash energy absorption assembly and a vehicle. The crash energy absorption assembly includes a support frame, an energy absorption and buffer member, a driving member, and a transmission assembly. The support frame is used for connecting to the body of the vehicle. The energy absorption and buffer member is movably mounted on the support frame and can move relative to the support frame to be in a deployed state or a retracted state; the transmission assembly includes a moving member and a guide rail, the guide rail is fixedly arranged on the support frame, the moving member is drivingly connected between the driving member and the energy absorption and buffer member, and is movably engaged with the guide rail. The driving member is connected to the energy absorption and buffer member, and the transmission assembly is connected between the driving member and the support frame. The driving member is used for driving the moving member to move along the guide rail so as to drive the energy absorption and buffer member to move relative to the support frame, and enable the energy absorption and buffer member to be deployed or retracted relative to the support frame. The energy absorption and buffer member of the above crash energy absorption assembly can be retracted when not in use, reducing the space occupied by the vehicle in the height direction and making the height dimension of the vehicle relatively small.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and in particular to a collision energy absorbing assembly and a vehicle. Background Art

[0002] In the design and manufacture of aircraft, in order to provide effective cushioning and energy absorption during emergency landing, reduce crash impact, and protect the safety of occupants, helicopters, fixed-wing aircraft and other aircraft generally install collision energy absorption structures on the lower part of the fuselage.

[0003] However, installing a collision energy-absorbing structure in the lower part of the fuselage cannot reconcile the contradictions between the internal height space, center of mass height, and ground clearance of the vehicle body. If the vehicle body height and ground clearance are limited, there will be less height space for passengers in the vehicle, which will cause inconvenience in getting in and out and discomfort in riding. If the internal height space and ground clearance of the vehicle body are limited, the height of the vehicle body will increase, which will lead to an increase in the windward area, increase wind resistance, affect the cruising range, and increase the center of mass of the vehicle, increasing the risk of rollover. If the vehicle body height and the internal height space of the vehicle body are limited, the ground clearance will be reduced, which will easily lead to reduced vehicle passability and limited usage scenarios. Summary of the invention

[0004] An embodiment of the present application provides a collision energy absorbing assembly, and an embodiment of the present application also provides a vehicle having the above-mentioned collision energy absorbing assembly.

[0005] In a first aspect, an embodiment of the present application provides a collision energy absorbing assembly, including a support frame, an energy absorbing buffer, a driving member, and a transmission assembly. The support frame is used to be connected to the body of a vehicle. The energy absorbing buffer can be movably mounted on the support frame, and can move relative to the support frame to be in an expanded state or a folded state; the transmission assembly includes a moving member and a guide rail, the guide rail is fixedly arranged on the support frame, and the moving member is transmission-connected between the driving member and the energy absorbing buffer, and can movably cooperate with the guide rail. The driving member is connected to the energy absorbing buffer, and the transmission assembly is connected between the driving member and the support frame. The driving member is used to drive the moving member to move along the guide rail to drive the energy absorbing buffer to move relative to the support frame, so that the energy absorbing buffer is expanded or folded relative to the support frame; the installation angle of the energy absorbing buffer relative to the support frame in the expanded state is different from the installation angle relative to the support frame in the folded state.

[0006] In a second aspect, an embodiment of the present application further provides a vehicle, comprising a body, a fixing frame and any one of the above-mentioned collision energy absorbing assemblies, wherein the fixing frame is connected to a side of the body close to its parking platform when the body is parked, and a support frame of the collision energy absorbing assembly is installed on the fixing frame.

[0007] Compared with the prior art, the impact energy absorption assembly provided by the embodiments of the present application is applied to a vehicle. Taking a flying car as an example of the vehicle, when the vehicle is in the ground travel mode, the driving member drives the moving member to drive the energy absorption and buffer member to move relative to the support frame, so that the energy absorption and buffer member is retracted relative to the support frame, minimizing the occupation of the space of the vehicle body in the height direction, enabling the height dimension of the vehicle to be relatively small, and at the same time ensuring that the chassis of the vehicle body has a sufficient ground clearance. When the vehicle is flying, the driving member drives the moving member to drive the energy absorption and buffer member to move relative to the support frame, so that the energy absorption and buffer member is deployed relative to the support frame, ensuring that the energy absorption and buffer member can work properly during an emergency landing, buffering the impact of the crash, and providing safety protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions of the present application, the drawings required for the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0009] Figure 1 FIG. is a schematic structural diagram of a vehicle provided by an embodiment of the present application.

[0010] Figure 2 is Figure 1 a schematic structural diagram of the impact energy absorption assembly and the fixing frame of the vehicle shown in FIG.

[0011] Figure 3 FIG. is a schematic structural diagram of the impact energy absorption assembly provided by an embodiment of the present application.

[0012] Figure 4 is used to illustrate Figure 3 a schematic structural diagram of the first mounting surface in the impact energy absorption assembly shown in FIG.

[0013] Figure 5 is used to illustrate Figure 3 a schematic structural diagram of the second mounting surface in the impact energy absorption assembly shown in FIG.

[0014] Figure 6 is Figure 3 a schematic structural diagram of another embodiment of the energy absorption and buffer member in the impact energy absorption assembly shown in FIG.

[0015] Figure 7 is Figure 3Schematic structural diagram of the energy-absorbing and buffering member of the shown collision energy-absorbing assembly in the deployed state. Explanation of reference numerals: 100, collision energy-absorbing assembly; 10, support frame; 12, mounting plate; 121, first end; 123, second end; 125, relief groove; 14, connecting member; 141, first connecting plate; 143, second connecting plate; 145, bayonet; 16, first mounting surface; 161, first limiting member; 18, second mounting surface; 181, second limiting member; 30, energy-absorbing and buffering member; 32, limiting end; 34, crush end; 36, crush cavity; 37, outer cylinder; 38, inner cylinder; 39, elastic member; 40, retracting and deploying mechanism; 41, mounting bracket; 412, fixing portion; 414, connecting portion; 43, transmission shaft; 50, driving member; 70, transmission assembly; 72, moving member; 721, gear; 74, guide rail; 741, first limiting section; 743, rotating section; 745, second limiting section; 747, rack; 76, auxiliary moving member; 761, roller; 78, auxiliary track; 781, first section; 783, second section; 785, chute; 200, vehicle; 201, body; 203, fixing bracket; 2032, storage space. Detailed implementation manners

[0016] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

[0017] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0018] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0019] Please refer toFigure 1 , an embodiment of the present application provides a collision energy absorption assembly 100, which is used to be installed in a vehicle 200 and is used to provide effective buffering and energy absorption during an emergency landing of the vehicle 200, protect against crash impact, and protect the safety of occupants.

[0020] This specification does not limit the specific type of the vehicle 200. For example, the vehicle 200 can be a drone, a helicopter or a fixed-wing aircraft, or can be a flying car, an ordinary car, etc. In this embodiment, the vehicle 200 is a flying car, which includes a fuselage 201, a fixing frame 203 and a collision energy absorption assembly 100. The fuselage 201 is provided with a passenger cabin, which is used to provide a seating space. The fixing frame 203 is connected to the bottom of the fuselage 201. Herein, the "bottom of the fuselage 201" is usually the side of the vehicle 200 close to its parking platform when the vehicle 200 is parked. For example, when the fuselage 201 is a vehicle body, it is usually provided with a chassis, and the fixing frame 203 is fixedly arranged on the chassis. The fixing frame 203 is provided with a storage space 2032. The fixing frame 203 is generally in the shape of a rectangular frame, and the storage space 2032 can be understood as the space enclosed by the fixing frame 203. The storage space 2032 penetrates the fixing frame 203 along the height direction of the fuselage 201. Herein, the height direction of the fuselage 201 is the height direction when the fuselage 201 is parked.

[0021] Please refer to Figure 1 and Figure 2 , the collision energy absorption assembly 100 is installed on the fixing frame 203 and is connected to the fuselage 201 through the fixing frame 203. The collision energy absorption assembly 100 includes an energy absorption buffer member 30 and a retracting and extending mechanism 40. The energy absorption buffer member 30 is movably connected to the fixing frame 203 through the retracting and extending mechanism 40. The retracting and extending mechanism 40 is used to drive the energy absorption buffer member 30 to move relative to the fixing frame 203, so that the energy absorption buffer member 30 is in an unfolded state or a retracted state relative to the fixing frame 203. In the retracted state, the energy absorption buffer member 30 is located in the storage space 2032, reducing the height of the fuselage 201 of the vehicle 200, reducing wind resistance, and improving the stability of the vehicle 200.

[0022] When the vehicle 200 is in the land travel mode, the energy absorption buffer member 30 is stored in the storage space 2032, trying to avoid occupying the space of the fuselage 201 in the height direction, enabling the height dimension of the fuselage 201 to be relatively small, and at the same time ensuring that the chassis of the fuselage 201 has sufficient ground clearance. When the vehicle 200 is flying, the energy absorption buffer member 30 can be unfolded relative to the fixing frame 203, ensuring that the energy absorption buffer member 30 can work normally during an emergency landing, buffering the crash impact, and providing safety protection.

[0023] In this embodiment, a plurality of collision energy absorption assemblies 100 are provided. Considering the space occupied by the energy absorption and buffer member 30 moving relative to the fixed frame 203, the plurality of collision energy absorption assemblies 100 are arranged at intervals along the length direction of the fixed frame 203; and the plurality of collision energy absorption assemblies 100 are arranged staggered along the length direction of the fixed frame 203 to improve the installation stability of the collision energy absorption assemblies 100 and ensure the uniformity of energy absorption and buffering when the collision energy absorption assemblies 100 are used during the emergency landing of the vehicle 200. In some embodiments, a plurality of fixed frames 203 can also be provided, and the plurality of fixed frames 203 can be arranged along the length direction of the fuselage 201. Correspondingly, each fixed frame 203 is provided with a plurality of collision energy absorption assemblies 100, further reducing the crash impact and improving the safety performance of the vehicle 200.

[0024] Please also refer to Figure 2 and Figure 3 , in this embodiment, the collision energy absorption assembly 100 further includes a support frame 10. The support frame 10 is connected to the fixed frame 203 and is used for installing the energy absorption and buffer member 30. The support frame 10 includes a mounting plate 12 and a connecting member 14 connected to one side of the mounting plate 12. The connecting member 14 includes a first connecting plate 141 and a second connecting plate 143. The extending direction of the first connecting plate 141 and the extending direction of the second connecting plate 143 are substantially the same. The first connecting plate 141 is connected to the mounting plate 12, and the second connecting plate 143 is connected to the mounting plate 12. The plane where the first connecting plate 141 is located and the plane where the second connecting plate 143 is located intersect (for example, are perpendicular). The opposite side surfaces of the first connecting plate 141 and the second connecting plate 143 together form a bayonet 145, and the support frame 10 is clamped and fixed to one side (i.e., the frame of the fixed frame 203) of the fixed frame 203 through the bayonet 145.

[0025] Please also refer to Figure 4 and Figure 5 , further, a first mounting surface 16 is provided on the side of the first connecting plate 141 facing away from the second connecting plate 143. The first mounting surface 16 is used for arranging a structure for limiting the energy absorption and buffer member 30. The side of the second connecting plate 143 facing away from the first connecting plate 141 is a second mounting surface 18. The second mounting surface 18 is used for arranging a structure for limiting the energy absorption and buffer member 30. Since the plane where the first connecting plate 141 is located and the plane where the second connecting plate 143 is located intersect, the orientations of the first mounting surface 16 and the second mounting surface 18 are also different. Taking the orientation of the first mounting surface 16 and the normal line of the second mounting surface 18 as a reference, the orientation of the first mounting surface 16 and the normal line of the second mounting surface 18 can intersect (for example, be perpendicular). Among them, the second mounting surface 18 faces the side of the fixed frame 203 (as shown in Figure 2 ) facing away from the bayonet 145. When the fuselage 201 is parked, the first mounting surface 16 faces the parking platform where the fuselage 201 is parked.

[0026] In this embodiment, there are two mounting plates 12, which are respectively connected to the two ends of the connecting member 14, and the mounting plates 12 are substantially perpendicular to the first connecting plate 141 and / or the second connecting plate 143, so that the side wall of the mounting plate 12 is fixedly connected to the ends of the first connecting plate 141 and the second connecting plate 143 on the same side. The bayonet 145 penetrates the two mounting plates 12 along the length direction of the first connecting plate 141, so that the fixing frame 203 is clamped on the bayonet 145.

[0027] In this embodiment, the energy absorbing buffer 30 can be movably mounted on the support frame 10, and can be moved relative to the support frame 10 to be in an expanded state or a retracted state under the drive of the retracting mechanism 40. As an example, the energy absorbing buffer 30 is configured as a hollow cylinder, and the hollow cylinder structure is conducive to the energy absorbing buffer 30 to collapse and absorb energy. The energy absorbing buffer 30 is provided with a limit end 32 and a collapse end 34 opposite to each other, and the energy absorbing buffer 30 is also provided with a collapse cavity 36, and the collapse cavity 36 penetrates the energy absorbing buffer 30 in the direction from the limit end 32 to the collapse end 34. The limit end 32 is arranged between the two mounting plates 12, and is located on the side of the connecting member 14 away from the bayonet 145.

[0028] When the vehicle 200 is in the land mode, the energy absorbing buffer 30 is in a folded state, the limit end 32 is opposite to the second mounting surface 18, and the collapsed end 34 is opposite to the inner wall of the storage space 2032. At this time, the second mounting surface 18 is usually facing the front, rear, left or right of the moving direction of the vehicle 200, and the limit end 32 is opposite to the second mounting surface 18, so that the energy absorbing buffer 30 is generally extended in the horizontal direction to avoid occupying the storage space in the vertical direction. Furthermore, the structure in which the limit end 32 is opposite to the second mounting surface 18 can use the second mounting surface 18 itself or the limit structure on the second mounting surface 18 to limit the moving position of the limit end 32, so that the installation structure of the collision energy absorbing assembly 100 is more stable and reliable.

[0029] When the vehicle 200 is in flight mode, the energy absorbing buffer 30 can be in an expanded state, the extension direction of the collapse cavity 36 is the height direction of the body 201, the limit end 32 of the energy absorbing buffer 30 is opposite to the first mounting surface 16, and the collapse end 34 is roughly opposite to the parking platform of the body 201. At this time, the first mounting surface 16 is usually facing the ground, for example, the first mounting surface 16 is extended and arranged roughly parallel to the horizontal plane, and the limit end 32 is opposite to the first mounting surface 16, so that the energy absorbing buffer 30 can extend roughly along the vertical direction to buffer the impact from the ground.

[0030] Furthermore, the structure in which the limiting end 32 is disposed opposite to the first mounting surface 16 can utilize the first mounting surface 16 itself or the limiting structure on the first mounting surface 16 to limit the moving position of the limiting end 32. When the energy-absorbing buffer member 30 deforms or collapses, the first mounting surface 16 provides a certain supporting force for the energy-absorbing buffer member 30, making the overall buffering effect of the collision energy-absorbing assembly 100 more reliable. In some embodiments, the first connecting plate 141 can be made of a material with a certain buffering ability (such as elastic deformation ability) but also relatively high rigidity. While supporting the deformation or collapse of the energy-absorbing buffer member 30, it can undergo a certain amount of deformation buffering, thereby improving the overall buffering effect of the collision energy-absorbing assembly 100. For example, the first connecting plate 141 can be made of industrial plastic with a relatively large thickness, or the first connecting plate 141 itself is provided with an elastic buffering structure, which can be a spring arm or the like, and is connected between the fixing frame 203 and the energy-absorbing buffer member 30.

[0031] Due to the above structural limitations of the first mounting surface 16 and the second mounting surface 18, the mounting angle of the energy-absorbing buffer member 30 relative to the support frame 10 in the deployed state is different from the mounting angle relative to the support frame 10 in the retracted state.

[0032] When the vehicle 200 crashes, the energy-absorbing buffer member 30 will collapse under the impact force due to the presence of the collapsing cavity 36, achieving the effect of buffering and absorbing energy and reducing the injury to the occupants in the vehicle 200. In some embodiments, the energy-absorbing buffer member 30 can also be configured as a compression elastic rod or other structures to enhance the buffering and energy-absorbing ability. Please refer to Figure 6 , for example, the energy-absorbing buffer member 30 can include an outer cylinder 37, an inner cylinder 38, and an elastic member 39. The inner cylinder 38 is telescopically received in the outer cylinder 37, and the elastic member 39 is disposed between the inner cylinder 38 and the outer cylinder 37. The specific type of the elastic member 39 is not limited in this specification. For example, the elastic member 39 can be air, or can be a structure with elastic potential energy such as a spring or rubber.

[0033] To improve the stability of the energy-absorbing buffer member 30 in the deployed state, the support frame 10 can further include a first limiting member 161. The first limiting member 161 is mounted on the first mounting surface 16. In the deployed state, the limiting end 32 is engaged with the first limiting member 161 to limit the mounting position of the energy-absorbing buffer member 30. The specific structure of the first limiting member 161 is not limited in this specification. In this embodiment, the first limiting member 161 is a limiting block, which is fixed to the first mounting surface 16 and protrudes relative to the first mounting surface 16. In the deployed state, the first limiting member 161 is embedded in the collapsing cavity 36 at the limiting end 32 and is engaged with the limiting end 32, improving the stability of the installation of the energy-absorbing buffer member 30 in the deployed state.

[0034] In order to improve the stability of the energy absorbing buffer 30 in the retracted state, the support frame 10 may further include a second limit member 181. The second limit member 181 is installed on the second mounting surface 18. In the retracted state, the limit end 32 is clamped and matched with the second limit member 181 to limit the installation position of the energy absorbing buffer 30. This specification does not limit the specific structure of the second limit member 181. In this embodiment, the second limit member 181 is a limit block. The second limit member 181 is fixed to the second mounting surface 18 and protrudes relative to the second mounting surface 18. In the retracted state, the second limit member 181 is embedded in the collapse cavity 36 at the limit end 32 and is clamped and matched with the limit end 32, thereby improving the stability of the energy absorbing buffer 30 when installed in the retracted state.

[0035] Please also see Figure 2 and Figure 5 In this embodiment, the retractable mechanism 40 is disposed between the energy absorbing buffer 30 and the support frame 10. The retractable mechanism 40 includes a driving member 50 and a transmission assembly 70, wherein the driving member 50 is connected to the energy absorbing buffer 30, and the transmission assembly 70 is connected between the driving member 50 and the support frame 10.

[0036] The driving member 50 can drive the transmission assembly 70 to drive the energy absorbing buffer 30 to move relative to the support frame 10, so that the energy absorbing buffer 30 is expanded or retracted relative to the support frame 10. This specification does not limit the specific type of the driving member 50. For example, the driving member 50 can be a driving source such as a rotary motor, a rotary steering gear, a rotary cylinder, etc. In this embodiment, the driving member 50 is a rotary motor.

[0037] The transmission assembly 70 includes a moving member 72 and a guide rail 74. The guide rail 74 is disposed on the mounting plate 12. The moving member 72 is transmission-connected between the driving member 50 and the energy-absorbing buffer member 30, and can be movably matched with the guide rail 74. The limiting end 32 of the energy-absorbing buffer member 30 is matched with the guide rail 74 through the moving member 72. The driving member 50 is used to drive the moving member 72 to move along the guide rail 74, so as to drive the energy-absorbing buffer member 30 to move relative to the support frame 10.

[0038] For the convenience of describing the orientation of the guiding rail 74, in this embodiment, one end of the mounting plate 12 close to the first limiting member 161 is defined as the first end 121, and one end close to the second limiting member 181 is defined as the second end 123. The guiding rail 74 extends from the first end 121 to the second end 123 on the mounting plate 12. The guiding rail 74 includes a first limiting section 741, a rotating section 743, and a second limiting section 745. The first limiting section 741 is located at the first end 121 and extends along the first direction X, and the first direction X is substantially perpendicular to the first mounting surface 16. When the energy absorption and buffer member 30 expands relative to the support frame 10, moving along the first limiting section 741 can make it close to the first limiting member 161 and engage with the first limiting member 161. The second limiting section 745 is located at the second end 123 and extends along the second direction Y. The second direction Y intersects (for example, is perpendicular to) the first direction X, and the second direction Y is substantially perpendicular to the second mounting surface 18. When the energy absorption and buffer member 30 retracts relative to the support frame 10, moving along the second limiting section 745 can make it close to the second limiting member 181 and engage with the second limiting member 181.

[0039] The rotating section 743 is connected between the first limiting section 741 and the second limiting section 745. When the energy absorption and buffer member 30 changes from the retracted state to the expanded state or from the expanded state to the retracted state relative to the support frame 10, it moves along the rotating section 743. The present specification does not limit the specific shape of the rotating section 743. For example, the rotating section 743 can be an arc section, or a combined section of a straight section and an arc section, and the rotating section 743 extends from the first limiting section 741 to the second limiting section 745.

[0040] In this embodiment, the retracting and deploying mechanism 40 further includes a mounting frame 41. The mounting frame 41 is connected to the energy absorption and buffer member 30 and is used for mounting the driving member 50 and the moving member 72. The mounting frame 41 is connected to a part of the energy absorption and buffer member 30 close to the limiting end 32. The mounting frame 41 includes a fixing part 412 and a connecting part 414. The fixing part 412 is fixed to the energy absorption and buffer member 30 and is located between the two mounting plates 12, and the driving member 50 is mounted on the fixing part 412. The connecting part 414 is fixedly connected to the side of the energy absorption and buffer member 30 facing the mounting plate 12. The moving member 72 is connected to one end of the connecting part 414 close to the fixing part 412 and is connected to the energy absorption and buffer member 30 through the connecting part 414.

[0041] When the vehicle 200 is in the land travel mode, the energy absorption and buffer member 30 is in the retracted state (as Figure 2As shown in the figure, the moving member 72 is located at the second limiting section 745. When the vehicle 200 enters the flying state, the driving member 50 controls the rotation of the moving member 72. Due to the cooperation relationship between the moving member 72 and the guiding rail 74, the moving member 72 can move along the second limiting section 745 on the guiding rail 74. The moving member 72 drives the energy-absorbing buffer member 30 to move away from the second limiting member 181 until the second limiting member 181 exits the limiting end 32. Then, the moving member 72 continues to move along the rotating section 743 to the first limiting section 741. The energy-absorbing buffer member 30 rotates as the moving member 72 moves. Then, the moving member 72 moves along the first limiting section 741 close to the first limiting member 161 until the first limiting member 161 is embedded in the limiting end 32 of the energy-absorbing buffer member 30, reaching the deployed state of the energy-absorbing buffer member 30 (as Figure 7 shown).

[0042] This specification does not limit the specific types of the moving member 72 and the guiding rail 74. For example, the moving member 72 can be a slider, the guiding rail 74 is a chute, and the moving member 72 is drivingly connected to the output end of the driving member 50. The driving member 50 can be a translational driving member, which can be arranged on the mounting plate 12 and drive the slider to slide along the extending direction of the chute. The driving member 50 drives the slider to slide in the chute, thereby driving the energy-absorbing buffer member 30 to move through the connecting portion 414. In this embodiment, the moving member 72 is a gear 721, the gear 721 is drivingly connected to the driving member 50, and is rotatably connected to the connecting portion 414. The guiding rail 74 is a rack 747, the rack 747 is fixed to the side wall of the mounting plate 12, and the gear 721 meshes with the rack 747. The driving member 50 drives the gear 721 to rotate. Since the rack 747 is fixed to the mounting plate 12, the gear 721 will move along the rack 747 when rotating, thereby driving the energy-absorbing buffer member 30 to move along the rack 747 through the connecting portion 414, realizing the deployment or retraction of the energy-absorbing buffer member 30 relative to the support frame 10.

[0043] As an example, the rack 747 can be fixed to the side of the mounting plate 12 facing the energy-absorbing buffer member 30. At this time, the gear 721 is located on the side of the mounting plate 12 facing the energy-absorbing buffer member 30. As another example, the rack 747 can also be fixed to the side of the mounting plate 12 facing away from the energy-absorbing buffer member 30. At this time, the mounting plate 12 is provided with a relief groove 125 for connecting the gear 721 and the driving member 50. The shape and extending direction of the relief groove 125 are substantially the same as those of the rack 747. The gear 721 is located on the side of the mounting plate 12 facing away from the energy-absorbing buffer member 30. The output end of the driving member 50 passes through the relief groove 125, or there is a transmission member between the driving member 50 and the gear 721, and the transmission member passes through the relief groove 125.

[0044] In order to improve the stability of the energy-absorbing buffer member 30 moving relative to the support frame 10, in this embodiment, the transmission assembly 70 further includes an auxiliary moving member 76 and an auxiliary track 78. The auxiliary moving member 76 is connected to one end of the connecting portion 414 facing away from the moving member 72. The auxiliary moving member 76 and the moving member 72 are respectively located on opposite sides of the energy-absorbing buffer member 30. The auxiliary track 78 is disposed on the mounting plate 12, and the auxiliary moving member 76 is movably disposed on the auxiliary track 78. When the driving member 50 drives the moving member 72 to move within the guide rail 74, the auxiliary moving member 76 moves along the auxiliary track 78. By jointly supporting the movement of the energy-absorbing buffer member 30 by the moving member 72 and the auxiliary moving member 76, the stability of the energy-absorbing buffer member 30 moving relative to the support frame 10 can be improved.

[0045] Specifically, the auxiliary track 78 is disposed at the first end 121 of the mounting plate 12 and is located on the side of the mounting plate 12 close to the first connecting plate 141. The auxiliary track 78 includes a first section 781 and a second section 783 that are connected in sequence. Among them, the first section 781 is located on one side of the first limiting section 741 and extends along the first direction X. When the limiting end 32 is engaged with the first limiting member 161, the auxiliary moving member 76 is located on the first section 781. The second section 783 extends along the second direction Y. When the limiting end 32 is engaged with the second limiting member 181, the auxiliary moving member 76 is located on the second section 783.

[0046] This specification does not limit the specific structures of the auxiliary moving member 76 and the auxiliary track 78. For example, the auxiliary moving member 76 can be a slider and the auxiliary track 78 can be a chute. Or, the auxiliary moving member 76 can also be a gear and the auxiliary track 78 can be a rack. In this embodiment, the auxiliary moving member 76 is a roller 761 and the auxiliary track 78 is a chute 785, and the roller 761 is located in the chute 785. When the driving member 50 drives the moving member 72 to move, the roller 761 rolls within the chute 785 and moves along the chute 785, improving the stability of the movement of the energy-absorbing buffer member 30.

[0047] In this embodiment, the number of the transmission assemblies 70 is set to two, and the two transmission assemblies 70 are respectively disposed on both sides of the energy-absorbing buffer member 30. Therefore, the number of the guide rails 74 can also be set to two, and the two guide rails 74 are respectively disposed on the opposite sides of the two mounting plates 12; the number of the moving members 72 is set to two, which are correspondingly disposed one by one with the two guide rails 74. Correspondingly, the number of the connecting portions 414 is also set to two, and the two connecting portions 414 are respectively connected to the opposite sides of the energy-absorbing buffer member 30 and are correspondingly disposed one by one with the two moving members 72. The two moving members 72 are connected to the corresponding connecting portions 414 and cooperate with the corresponding guide rails 74. The number of the auxiliary moving members 76 and the auxiliary tracks 78 are also both set to two, which will not be elaborated here.

[0048] The two transmission components 70 can be driven by two driving members 50, or only one driving member 50 can be used for driving. In this embodiment, the retracting and deploying mechanism 40 can further include a transmission shaft 43. The transmission shaft 43 is connected between the two transmission components 70, and both ends of the transmission shaft 43 are rotatably connected to the connecting portion 414. Specifically, both ends of the transmission shaft 43 respectively pass through the gears 721 of the two transmission components 70 and are rotationally locked to the gears 721. The output end of the driving member 50 is in transmission connection with the transmission shaft 43. The driving member 50 drives one of the transmission components 70 to move, and drives the other transmission component 70 to move through the transmission shaft 43. Only one driving member 50 is needed to drive the two transmission components 70 to move, reducing the number of components and saving costs and energy to a certain extent.

[0049] In the collision energy absorption assembly 100 provided by the embodiment of the present application, when the vehicle 200 is in the land travel mode, the energy absorption and buffer member 30 is in the retracted state and is located in the storage space 2032. When the vehicle 200 enters the flight state, the driving member 50 controls the moving member 72 to move along the second limiting section 745. The moving member 72 drives the energy absorption and buffer member 30 to move away from the second limiting member 181 until the second limiting member 181 withdraws from the limiting end 32. Then the moving member 72 moves along the rotating section 743 to the first limiting section 741, and the energy absorption and buffer member 30 rotates as the moving member 72 moves. Then the moving member 72 moves along the first limiting section 741 close to the first limiting member 161 until the first limiting member 161 is inserted into the limiting end 32 of the energy absorption and buffer member 30, reaching the deployed state of the energy absorption and buffer member 30 relative to the support frame 10. When the vehicle 200 crashes, the energy absorption and buffer member 30 has a crush cavity 36 and will crush under the impact force, achieving the effect of buffering and absorbing energy and reducing the injury to the occupants in the vehicle 200.

[0050] The energy absorption and buffer member 30 of the collision energy absorption assembly 100 provided by the present application can be stored under the fuselage 201 when the vehicle 200 is in the land travel mode, minimizing the occupation of the space of the fuselage 201 in the height direction, enabling the height dimension of the fuselage 201 to be relatively small, and at the same time ensuring that the chassis of the fuselage 201 has a sufficient ground clearance. During flight, the energy absorption and buffer member 30 can be deployed and limited and locked to ensure that the energy absorption and buffer member 30 can work properly during an emergency landing, buffer the crash impact, and provide safety protection.

[0051] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0052] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. And these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this application.

Claims

1. A collision energy absorption assembly, applied to a vehicle, characterized in that Comprising: A support frame for connecting to the body of the vehicle. The support frame includes a mounting plate and a connecting member. The connecting member is connected to one side of the mounting plate. The mounting plate has a first end and a second end; An energy-absorbing buffer member movably mounted on the support frame and capable of moving relative to the support frame to be in a deployed state or a retracted state; A driving member connected to the energy-absorbing buffer member; And A transmission assembly connected between the driving member and the support frame. The transmission assembly includes a moving member and a guide rail. The guide rail is fixedly provided on the mounting plate and extends from the first end to the second end. The guide rail includes a first limiting section, a rotating section, and a second limiting section. The first limiting section is located at the first end and extends in a first direction. The second limiting section is located at the second end and extends in a second direction. The second direction intersects with the first direction. The rotating section is connected between the first limiting section and the second limiting section; The moving member is drivingly connected between the driving member and the energy-absorbing buffer member and is movably engaged with the guide rail; The driving member is used to drive the moving member to move along the guide rail to drive the energy-absorbing buffer member to move relative to the support frame, so that the energy-absorbing buffer member is deployed or retracted relative to the support frame; The mounting angle of the energy-absorbing buffer member relative to the support frame in the deployed state is different from the mounting angle relative to the support frame in the retracted state.

2. The impact energy absorption assembly according to claim 1, characterized in that, The support frame includes a first mounting surface and a second mounting surface. The orientations of the first mounting surface and the second mounting surface are different; The energy-absorbing buffer member has a limiting end, and the limiting end is engaged with the guide rail through the moving member; When the energy-absorbing buffer member is in the deployed state, the limiting end faces the first mounting surface. When the energy-absorbing buffer member is in the retracted state, the limiting end faces the second mounting surface.

3. The crash energy absorbing assembly according to claim 2, characterized in that, The support frame further includes a first limiting member mounted on the first mounting surface. In the deployed state, the limiting end is engaged with the first limiting member to limit the mounting position of the energy-absorbing buffer member.

4. The crash energy absorption assembly according to claim 3, wherein, The support frame further includes a second limiting member mounted on the second mounting surface. In the retracted state, the limiting end is engaged with the second limiting member to limit the mounting position of the energy-absorbing buffer member.

5. The impact energy absorption assembly according to claim 4, characterized in that, Both the first mounting surface and the second mounting surface are provided on the connecting member. The first limiting member is close to the first end, and the second limiting member is close to the second end; When the energy-absorbing buffer member is deployed relative to the support frame, it can move close to the first limiting member and engage with the first limiting member along the first limiting section; When the energy-absorbing buffer member is retracted relative to the support frame, it can move close to the second limiting member and engage with the second limiting member along the second limiting section.

6. The crash energy absorbing assembly according to claim 5, wherein, The transmission assembly further comprises an auxiliary moving member connected to the energy absorbing buffer member, the mounting plate is provided with an auxiliary track, the auxiliary moving member and the moving member are respectively located at opposite sides of the energy absorbing buffer member, and the auxiliary moving member is movably arranged on the auxiliary track; When the driving member drives the moving member to move, the auxiliary moving member moves along the auxiliary track.

7. The impact energy absorption assembly according to claim 6, characterized in that, The auxiliary track is arranged at the first end, the auxiliary track comprises a first section and a second section connected to each other, the first section extends along the first direction, and when the limiting end is engaged with the first limiting member, the auxiliary moving member is located in the first section; The second section extends along the second direction, and when the limiting end is locked with the second limiting member, the auxiliary moving member is located in the second section.

8. The crash energy absorbing assembly according to any one of claims 1 to 7, characterized in that, The moving member is a gear, which is transmission-connected to the driving member, and the guide rail is provided with a rack, and the gear is meshed with the rack.

9. The crash energy absorption assembly according to any one of claims 1 to 7, characterized in that The energy absorbing buffer is provided with a collapse cavity. When the energy absorbing buffer is in the expanded state, the collapse cavity penetrates the energy absorbing buffer along the height direction of the machine body.

10. The crash energy absorption assembly according to any one of claims 1 to 7, characterized in that, The energy absorbing buffer comprises an outer tube, an inner tube and an elastic member. The inner tube can be telescopically accommodated in the outer tube, and the elastic member is arranged between the outer tube and the inner tube.

11. A vehicle, characterized in that, include: Body; A fixing frame connected to a side of the machine body close to its parking platform when the machine body is parked; And the collision energy absorbing assembly as described in any one of claims 1 to 10, wherein the support frame of the collision energy absorbing assembly is installed on the fixing frame.

12. The vehicle according to claim 11, characterized in that, The fixing frame is provided with a storage space, and the storage space penetrates the fixing frame along the height direction of the machine body. In the folded state, the energy absorbing buffer of the collision energy absorbing assembly is located in the storage space.

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