Rear subframe structure, chassis assembly and vehicle

Abstract

This utility model relates to a rear subframe structure, a frame assembly, and a vehicle, comprising: a rear subframe body, wherein the rear subframe body is provided with a rear mounting plate for connecting to the beam of the rear body of the vehicle; and a guide structure connected to the rear mounting plate, the guide structure including a guide ramp intersecting the length direction of the beam and being disposed opposite to a mounting area on the surface of the beam along the length direction of the rear subframe body, for guiding components within the mounting area to the outside of the vehicle. The rear subframe structure, frame assembly, and vehicle of this solution can reduce the risk of severe crushing of rear occupants in the event of a rear-end collision.

Description

Technical Field

[0001] This application belongs to the field of vehicle safety technology, specifically relating to a rear subframe structure, a frame assembly, and a vehicle. Background Technology

[0002] As consumers' demands for car use increase, and as car manufacturers strive to enhance their appeal to consumers, vehicles are being equipped with features such as air spring suspension, active hydraulic suspension, and oxygen concentrators (which include oxygen pumps). Correspondingly, air spring suspensions have air spring inflation pumps or air spring storage tanks, oxygen concentrators have corresponding oxygen pumps, and active hydraulic suspensions have corresponding hydraulic pumps. These components are generally located under the trunk floor, which results in limited space under the trunk floor.

[0003] When these functional structural components are concentrated under the luggage compartment floor and installed on the rear longitudinal beam due to strength requirements, the rear longitudinal beam may deform severely during a rear-end collision due to the large impact energy. In this situation, if a hard object (such as an air spring inflator, oxygen pump, or air spring reservoir) directly compresses the rear subframe, the subframe itself or its mounting points may break, increasing intrusion into the rear of the vehicle and consequently posing a risk of severe crushing to rear passengers. Summary of the Invention

[0004] The purpose of this utility model is to provide a rear subframe structure, a frame assembly, and a vehicle that can reduce the risk of severe crushing of rear passengers in the event of a rear-end collision.

[0005] The first aspect of this utility model discloses a rear subframe structure, comprising: a rear subframe body, the rear subframe body having a rear mounting plate for connecting to a beam of the rear body of a vehicle; and a guide structure connected to the rear mounting plate, the guide structure including a guide ramp intersecting the length direction of the beam and being disposed opposite to a mounting area on the surface of the beam along the length direction of the rear subframe body, for guiding components within the mounting area to the outside of the vehicle.

[0006] In one exemplary embodiment, the rear mounting plate includes a left rear mounting plate and a right rear mounting plate spaced apart along the width direction of the rear subframe body, the left rear mounting plate and the right rear mounting plate being connected one-to-one with the left rear longitudinal beam and the right rear longitudinal beam of the beam body; the guide structure is connected to the left rear mounting plate.

[0007] In one exemplary embodiment, the rear mounting plate includes a left rear mounting plate and a right rear mounting plate spaced apart along the width direction of the rear subframe body, the left rear mounting plate and the right rear mounting plate being connected one-to-one with the left rear longitudinal beam and the right rear longitudinal beam of the beam body; the guide structure is connected to the right rear mounting plate.

[0008] In one exemplary embodiment, the rear mounting plate includes a left rear mounting plate and a right rear mounting plate spaced apart along the width direction of the rear subframe body. The left rear mounting plate and the right rear mounting plate are respectively applied to connect with the left rear longitudinal beam and the right rear longitudinal beam of the beam body. The rear subframe structure includes two guide structures, which are respectively connected to the right rear mounting plate and the left rear mounting plate.

[0009] In one exemplary embodiment, the guide structure includes a flange, a base plate, and a reinforcing rib. The flange includes an inner side and an outer side. The base plate and the reinforcing rib are both located within the flange, and the base plate is connected to the inner side. The reinforcing rib protrudes from the base plate and is connected to both the base plate and the flange. The guide ramp is located on the outer side.

[0010] In one exemplary embodiment, the rear mounting plate is provided with a shock-absorbing bushing, and the rear subframe structure further includes fasteners that pass through the guide structure and the shock-absorbing bushing, and are used to fasten the guide structure and the rear mounting plate to the beam.

[0011] The second aspect of this utility model discloses a vehicle frame assembly, including a rear body and the aforementioned rear subframe structure. The rear body includes a beam, and the guide structure and the rear mounting plate are installed on the beam by fasteners.

[0012] In one exemplary embodiment, the guide ramp forms an angle α with the length direction of the beam; wherein, α ≥ 145°.

[0013] In one exemplary embodiment, along the width direction of the frame assembly: the minimum vertical distance between the boundary of the guide ramp and the central axis of the frame assembly is less than the minimum vertical distance between the boundary of the beam and the central axis of the frame assembly.

[0014] The third aspect of this utility model discloses a vehicle, including a rigid component and the aforementioned frame assembly, wherein the rigid component is connected to the beam and located in the mounting area on the surface of the beam.

[0015] The present invention has the following beneficial effects:

[0016] In this invention, when the rear subframe structure is installed on the vehicle's beam, and the installation area is located on the beam surface, and the installation area is located on the side of the guide ramp near the rear of the vehicle along the length direction of the rear subframe body, if a rear-end collision occurs and a rigid component in the installation area intrudes into the vehicle along the length direction of the beam, the guide ramp intersects with the length direction of the beam and is positioned opposite to the installation area on the beam surface along the length direction of the rear subframe body to guide the component in the installation area to the outside of the vehicle. Therefore, the guide ramp of the guide structure can most likely guide the rigid component to the outside of the vehicle, thereby reducing the risk of severe crushing of rear passengers.

[0017] It should be understood that the above general description and the following detailed description are merely exemplary and illustrative, and do not limit the application. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. The drawings herein are for illustrating the inventive concept of this application and are not entirely equivalent to the structure of the actual product protected by this application.

[0019] Figure 1 A left-side view of the rear subframe structure in an embodiment of this utility model is shown.

[0020] Figure 2 A bottom view of the rear subframe structure in an embodiment of this utility model is shown.

[0021] Figure 3 This diagram illustrates a rear mounting plate without a guide structure in an embodiment of the present invention.

[0022] Figure 4 A schematic diagram of the installation position of the guide structure in an embodiment of this utility model is shown.

[0023] Figure 5 A schematic diagram showing the position of the guide structure in an embodiment of this utility model is provided.

[0024] Figure 6 A schematic diagram showing the relative positional relationship between the guide structure and the rigid component in an embodiment of this utility model is shown.

[0025] Explanation of reference numerals in the attached figures:

[0026] 11. Beam body; 11a. Left rear longitudinal beam; 11b. Right rear longitudinal beam; 101. Mounting area; 12. Rear subframe structure; 121. Rear subframe body; 122. Guide structure; 122a. Guide ramp; 1221. Flanged part; 1222. Base plate part; 1223. Reinforcing rib; 123. Rear mounting plate; 1231. Left rear mounting plate; 1232. Right rear mounting plate; 124. Shock absorber bushing; 125. Bolt; 1261. Left front mounting plate; 1262. Right front mounting plate; 13. Rigid components; 20. Rear body; 201. Trunk area; a1. Boundary of guide ramp; a2. Boundary of rigid components. Detailed Implementation

[0027] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0028] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0029] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present application, and should not be construed as limiting the present application.

[0030] Combination Figure 1 and Figure 6 As shown, this embodiment provides a rear subframe structure 12, a frame assembly, and a vehicle. The specific relationship and working principle of the rear subframe structure 12, the frame assembly, and the vehicle are described below:

[0031] Combination Figure 1 As shown, the vehicle in this embodiment includes a rigid component 13 and the aforementioned frame assembly. The frame assembly includes a rear body, which includes a beam 11. The rigid component 13 is connected to the beam 11 and is located in the mounting area 101 on the surface (lower surface, i.e., bottom surface) of the beam 11.

[0032] Combination Figure 1 and Figure 2 As shown, the beam 11 includes a left rear longitudinal beam 11a and a right rear longitudinal beam 11b. Along the wheelbase direction of the vehicle, the left rear longitudinal beam 11a and the right rear longitudinal beam 11b each include an area for mounting the rear subframe structure 12 and an area 201 for arranging the trunk, respectively. The area for mounting the rear subframe structure 12 is closer to the driver's seat than the area 201 for arranging the trunk. Both the left rear longitudinal beam 11a and / or the right rear longitudinal beam 11b may have a mounting area 101 for mounting rigid components 13, and the mounting area 101 is located below the area 201 corresponding to the trunk.

[0033] For example, the rigid component 13 may be a spring-loaded air pump, a spring-loaded air tank, an oxygen pump, and / or a hydraulic pump.

[0034] Furthermore, combined Figure 1 and Figure 2 As shown, the rigid component 13 is connected below the left rear longitudinal beam 11a and / or the right rear longitudinal beam 11b (i.e., the rigid component 13 is further away from the interior of the luggage compartment than the left rear longitudinal beam 11a and / or the right rear longitudinal beam 11b), and is located within the corresponding mounting area 101.

[0035] Combination Figure 2 As shown, the chassis assembly also includes a rear subframe structure 12, which is fixedly connected to the left rear longitudinal beam 11a and the right rear longitudinal beam 11b.

[0036] Combination Figure 3 As shown, the rear subframe structure 12 includes a rear subframe body 121, and the rear subframe body 121 is provided with a rear mounting plate 123, which is used to connect with the beam 11 of the rear body 20 of the vehicle. The shape and specific structure of the rear subframe body 121 can be changed according to the size, appearance and structure of different vehicles, and are not limited here.

[0037] Combination Figures 1 to 4 As shown, the rear subframe body 121 includes a rear mounting plate 123 and a front mounting plate. The rear mounting plate 123 includes a left rear mounting plate 1231 and a right rear mounting plate 1232, and the front mounting plate includes a left front mounting plate 1261 and a right front mounting plate 1262. Each of the left rear mounting plate 1231, right rear mounting plate 1232, left front mounting plate 1261, and right front mounting plate 1262 is equipped with a shock-absorbing bushing 124. The rear subframe body 121 is fixed to the rear vehicle body 20 by multiple bolts 125 passing through the shock-absorbing bushings 124 in the left rear mounting plate 1231, right rear mounting plate 1232, left front mounting plate 1261, and right front mounting plate 1262, respectively.

[0038] Furthermore, the left rear mounting plate 1231 and the right rear mounting plate 1232 are spaced apart along the width direction of the rear subframe body 121 (i.e., the wheelbase direction of the vehicle), and the left front mounting plate 1261 and the right front mounting plate 1262 are spaced apart along the width direction of the rear subframe body 121 (i.e., the wheelbase direction of the vehicle).

[0039] For example, after multiple bolts 125 are inserted one-to-one through the shock-absorbing bushings 124 of the left rear mounting plate 1231 and the shock-absorbing bushings 124 of the left front mounting plate 1261, they are connected to the rear vehicle body 20. Similarly, after multiple bolts 125 are inserted one-to-one through the shock-absorbing bushings 124 of the right rear mounting plate 1232 and the shock-absorbing bushings 124 of the right front mounting plate 1262, they are connected to the rear vehicle body 20, thereby enabling the connection between the rear subframe body 121 and the rear vehicle body 20.

[0040] Combination Figures 1 to 4 As shown, the rear subframe structure 12 also includes a guide structure 122, which is connected to the rear mounting plate 123. The guide structure 122 includes a guide ramp 122a, which intersects with the length direction of the beam 11 and is disposed opposite to the mounting area 101 on the surface of the beam 11 along the length direction of the rear subframe body 121, so as to guide the components in the mounting area 101 to the outside of the vehicle.

[0041] For example, when the rigid component 13 is connected to the left rear longitudinal beam 11a, the guide structure 122 is connected to the left rear mounting plate 1231. When the rigid component 13 is connected to the right rear longitudinal beam 11b, the guide structure 122 is connected to the right rear mounting plate 1232. When there are multiple rigid components 13, and they are respectively connected to the right rear longitudinal beam 11b and the left rear longitudinal beam 11a, the rear subframe structure 12 includes two guide structures 122, and the two guide structures 122 are connected one-to-one to the right rear mounting plate 1232 and the left rear mounting plate 1231.

[0042] It should be understood that the position of the guide structure 122 can be selected based on the specific position of the rigid component 13, located on the left rear mounting plate 1231 and / or the right rear mounting plate 1232.

[0043] In this invention, when the rear subframe structure 12 is installed on the beam 11 of the vehicle, and the installation area 101 is located on the surface of the beam 11, and the installation area 101 is located on the side of the guide slope 122a near the rear of the vehicle along the length direction of the rear subframe body 121, if a rear-end collision occurs and the rigid component 13 in the installation area 101 intrudes into the vehicle along the length direction of the beam 11, since the guide slope 122a intersects with the length direction of the beam 11 and is positioned opposite to the installation area 101 on the surface of the beam 11 along the length direction of the rear subframe body 121 (i.e., the length direction of the beam 11 or the wheelbase direction of the vehicle), it is used to guide the component in the installation area 101 to the outside of the vehicle. Therefore, the guide slope 122a of the guide structure 122 can most likely guide the rigid component 13 to the outside of the vehicle, thereby reducing the risk of severe crushing of rear passengers.

[0044] Furthermore, combined Figure 6 As shown, the guide slope 122a forms an angle α with the length direction of the beam 11; where α ≥ 145°, thus playing a better guiding role.

[0045] For example, when the guide structure 122 is connected to the right rear mounting plate 1232, the guide ramp 122a forms an angle α with the length direction of the right rear longitudinal beam 11b; where α ≥ 145°. When the guide structure 122 is connected to the left rear mounting plate 1231, the guide ramp 122a forms an angle α with the length direction of the left rear longitudinal beam 11a; where α ≥ 145°.

[0046] Furthermore, combined Figure 6 As shown, along the width direction of the frame assembly (i.e. Figure 6 (In the direction shown from inside the vehicle to outside the vehicle): The minimum vertical distance between the boundary of the guide ramp 122a and the central axis of the frame assembly is less than the minimum vertical distance between the boundary of the beam 11 and the central axis of the frame assembly. This ensures that when a collision occurs, the rigid component 13 mounted on the beam 11 is likely to come into direct contact with the guide ramp 122a, increasing the probability of guiding the rigid component 13 out of the vehicle.

[0047] In this embodiment, along the width direction of the frame assembly (i.e. Figure 6 (Inward direction shown): The minimum vertical distance between the boundary of the guide ramp 122a and the central axis of the frame assembly is less than the minimum vertical distance between the boundary of the rigid component 13 and the central axis of the frame assembly.

[0048] In this embodiment, along the height direction of the frame assembly: the guide structure 122 is lower than the height of the beam 11, that is, both the guide structure 122 and the rigid component 13 are located on the bottom surface of the beam 11. Along the length direction of the beam 11: the guide structure 122 is positioned corresponding to the middle section of the rigid component 13 to ensure that the rigid component 13 can contact the guide structure 122 when a collision occurs and it moves towards the vehicle's interior cabin.

[0049] Of course, in other embodiments, the guide structure 122 may also be provided for other areas of the rigid component 13, for example, along the length direction of the beam 11: the guide structure 122 is provided for the upper middle or lower middle section of the rigid component 13, as long as the orthographic projection of the rigid component 13 along the length direction of the beam 11 coincides with the orthographic projection of the guide structure 122 along the length direction of the beam 11.

[0050] It should be understood that, after the minimum vertical distance between the boundary of the guide ramp 122a and the central axis of the frame assembly is less than the minimum vertical distance between the boundary of the beam 11 and the central axis of the frame assembly, when looking from the rear of the vehicle toward the front, the boundary of the guide ramp 122a is closer to the central axis of the frame assembly than the boundary of the beam 11, so as to ensure that in the event of a collision, the rigid component 13 mounted on the beam 11 is likely to come into direct contact with the guide ramp 122a.

[0051] Furthermore, combined Figure 5 As shown, the guide structure 122 includes a flange 1221, a base plate 1222, and a reinforcing rib 1223. The base plate 1222 and the reinforcing rib 1223 are both located inside the flange 1221. The base plate 1222 is connected to the flange 1221. The reinforcing rib 1223 protrudes from the base plate 1222 and is connected to both the base plate 1222 and the flange 1221 to enhance the strength of the guide structure 122.

[0052] For example, the thickness of the base plate 1222 ranges from 2 to 3 mm to ensure the strength of the guide structure 122. The entire guide structure 122 can be a cast aluminum structure or a sheet metal welded structure.

[0053] For example, the flange 1221 is arranged circumferentially around the base plate 1222 and wraps around the base plate 1222. The flange 1221 is connected to the base plate 1222 and together they form a mounting groove. The reinforcing rib 1223 is located in the mounting groove and is connected to the flange 1221 and the base plate 1222. The reinforcing rib 1223 is arranged in a grid pattern in the mounting groove.

[0054] Furthermore, the flange portion 1221 includes an inner side and an outer side; the bottom plate portion 1222 is connected to the inner side; the guide ramp 122a is located on the outer side to guide the rigid component 13 to the outside of the vehicle after contact with the rigid component 13.

[0055] Combination Figure 3 As shown, the rear mounting plate 123 is provided with a shock-absorbing bushing 124, and the rear subframe structure 12 also includes fasteners. The fasteners pass through the guide structure 122 and the shock-absorbing bushing 124 and are used to fasten the guide structure 122 and the rear mounting plate 123 to the beam 11.

[0056] For example, the damping bushing 124 may be a bushing with a soft metal, rubber, nylon or non-metallic polymer structure.

[0057] For example, fasteners can be bolts 125 or screws, etc.

[0058] It should be understood that by fasteners passing through the guide structure 122 and the shock-absorbing bushing 124, and used to fasten the guide structure 122 and the rear mounting plate 123 to the beam 11, the shock-absorbing bushing 124 can absorb energy and reduce shock after the guide structure 122 comes into contact with the rigid component 13 in the event of a vehicle collision.

[0059] In summary, when the rigid components 13 on the left rear longitudinal beam 11a and / or right rear longitudinal beam 11b of this application are impacted and squeezed inwards, they can be guided by the guide structure 122 to move outwards, avoiding the rear subframe body 121. This reduces the pressure on the rear subframe body 121 and also prevents the rear body 20 from being subjected to strong forces, thus reducing the occupant survival space. Ultimately, this can meet consumers' increasing demands for vehicle use (such as the need for more functional components like air spring suspension and oxygen concentrators to be arranged on the beams 11 of the rear body 20), reducing the positional requirements for component placement and improving the flexibility of vehicle design. In addition, this rear subframe structure can meet higher US standard rear impact speeds, reaching over 90 kph, without requiring structural reinforcement of the rear subframe body 121 itself or the rear body 20, thus reducing the overall component cost and vehicle weight.

[0060] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified. The terms "some embodiments," "exemplarily," 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 this application.

[0062] The illustrative expressions of the terms used above do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of those different embodiments or examples, without contradiction.

[0063] Although embodiments of this application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of the patent coverage of this application.

Claims

1. A rear subframe structure, characterized in that, include: The rear subframe body is provided with a rear mounting plate, which is used to connect with the beam of the rear body of the vehicle. A guide structure is connected to the rear mounting plate. The guide structure includes a guide ramp that intersects the length direction of the beam and is positioned opposite to the mounting area on the surface of the beam along the length direction of the rear subframe body, for guiding components within the mounting area to the outside of the vehicle.

2. The rear subframe structure according to claim 1, characterized in that, The rear mounting plate includes a left rear mounting plate and a right rear mounting plate spaced apart along the width direction of the rear subframe body. The left rear mounting plate and the right rear mounting plate are used one-to-one to connect with the left rear longitudinal beam and the right rear longitudinal beam of the beam body. The guide structure is connected to the left rear mounting plate.

3. The rear subframe structure according to claim 1, characterized in that, The rear mounting plate includes a left rear mounting plate and a right rear mounting plate spaced apart along the width direction of the rear subframe body. The left rear mounting plate and the right rear mounting plate are used one-to-one to connect with the left rear longitudinal beam and the right rear longitudinal beam of the beam body. The guide structure is connected to the right rear mounting plate.

4. The rear subframe structure according to claim 1, characterized in that, The rear mounting plate includes a left rear mounting plate and a right rear mounting plate spaced apart along the width direction of the rear subframe body. The left rear mounting plate and the right rear mounting plate are used one-to-one to connect with the left rear longitudinal beam and the right rear longitudinal beam of the beam body. The rear subframe structure includes two guide structures, which are connected one-to-one to the right rear mounting plate and the left rear mounting plate.

5. The rear subframe structure according to claim 1, characterized in that, The guide structure includes a flange, a base plate, and a reinforcing rib. The flange includes an inner side and an outer side. The base plate and the reinforcing rib are both located inside the flange, and the base plate is connected to the inner side. The reinforcing rib protrudes from the base plate and is connected to both the base plate and the flange. The guide ramp is located on the outer side.

6. The rear subframe structure according to claim 1, characterized in that, The rear mounting plate is provided with a shock-absorbing bushing, and the rear subframe structure also includes fasteners, which are inserted into the guide structure and the shock-absorbing bushing, and are used to fasten the guide structure and the rear mounting plate to the beam.

7. A vehicle frame assembly, characterized in that, The vehicle includes a rear body and a rear subframe structure as described in any one of claims 1-6, wherein the rear body includes a beam, and the guide structure and the rear mounting plate are mounted on the beam by fasteners.

8. The frame assembly according to claim 7, characterized in that, The guide ramp forms an angle α with the length direction of the beam; where α ≥ 145°.

9. The frame assembly according to claim 7, characterized in that, Along the width direction of the frame assembly: the minimum vertical distance between the boundary of the guide ramp and the central axis of the frame assembly is less than the minimum vertical distance between the boundary of the beam and the central axis of the frame assembly.

10. A vehicle, characterized in that, Includes rigid components and the frame assembly as described in any one of claims 7-9, wherein the rigid components are connected to the beam and located in the mounting area on the surface of the beam.

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