Plate spring lifting lug support mounting structure, lower vehicle body and vehicle

Abstract

The invention discloses a plate spring lifting lug support mounting structure, a lower vehicle body and a vehicle, belongs to the technical field of commercial vehicles, and can improve the volume of a vehicle container. The plate spring lifting lug support mounting structure is applied to the vehicle and comprises a bearing beam and a plate spring lifting lug support, and the bearing beam comprises a first wall plate and a second wall plate which are oppositely arranged in the width direction of the vehicle; the second wallboard is close to the central axis of the vehicle in the length direction relative to the first wallboard; the plate spring lifting lug support comprises a first plate body and a second plate body which are oppositely arranged in the width direction of the vehicle. The first plate body is located on the side, away from the second wall plate, of the first wall plate and is separated from the first wall plate. The second plate body comprises a first plate section and a second plate section which are connected; the second plate section is located on the side, away from the first wall plate, of the second wall plate and fixedly connected with the second wall plate. In the width direction of the vehicle, the first plate section is located between the second plate section and the first wall plate and located below the bearing beam, and the first plate section and the first plate body are used for installing a plate spring lifting lug.

Description

Technical Field

[0001] This application relates to the field of commercial vehicle technology, specifically to a leaf spring hanger bracket mounting structure, a lower body, and a vehicle. Background Technology

[0002] Currently, with the acceleration of e-commerce, urbanization, and the continuous growth of urban logistics and distribution demands, the market is placing higher requirements on the cargo-carrying capacity of commercial vehicles. Cargo box volume, as one of the important design parameters for commercial vehicles, directly affects cargo transportation efficiency and operating costs. However, the space utilization rate of commercial vehicles in related technologies is still insufficient, limiting the cargo box volume. Summary of the Invention

[0003] This application provides a leaf spring lifting lug bracket mounting structure, a lower body, and a vehicle, which can increase the cargo box volume of the vehicle.

[0004] To achieve the above objectives, the embodiments of this application disclose the following technical solutions: In a first aspect, embodiments of this application provide a leaf spring hanger bracket mounting structure for use in a vehicle. The leaf spring hanger bracket mounting structure includes a load-bearing beam and a leaf spring hanger bracket. The load-bearing beam includes a first wall plate and a second wall plate disposed opposite to each other in the width direction of the vehicle. The second wall plate is disposed relative to the first wall plate near the central axis in the length direction of the vehicle. The leaf spring shackle bracket includes a first plate and a second plate disposed opposite to each other in the vehicle width direction; the first plate is located on the side of the first wall panel away from the second wall panel and is spaced apart from the first wall panel; the second plate includes a first plate segment and a second plate segment connected together; the second plate segment is located on the side of the second wall panel away from the first wall panel and is fixedly connected to the second wall panel; along the vehicle width direction, the first plate segment is located between the second plate segment and the first wall panel and is below the load-bearing beam; wherein, the first plate segment and the first plate are used to install the leaf spring shackle.

[0005] This configuration, by fixing the second segment of the second plate of the leaf spring hanger bracket to the second wall panel of the load-bearing beam, and positioning the first segment of the second plate below the load-bearing beam and between the second segment and the first wall panel, while simultaneously spacing the first plate from the first wall panel, allows the overall installation position of the leaf spring hanger bracket to be offset outwards from the vehicle. This allows the space required for the deformation of the leaf spring mounted on the leaf spring hanger bracket via the leaf spring hangers to be simultaneously offset outwards from the vehicle. Consequently, the space required for the leaf spring's deformation is misaligned with the load-bearing beam in the vehicle's width direction, which helps to reduce the rear floor's height and, consequently, increases the vehicle's cargo box volume without increasing the overall vehicle height.

[0006] In some possible embodiments of the first aspect, the second plate includes a bent section that connects the first plate segment and the second plate segment.

[0007] In some possible embodiments of the first aspect, the leaf spring lug bracket mounting structure includes a connector fixedly connected to the load-bearing beam. The connector includes a first connecting plate, which is filled between the first wall panel and the first plate body. The first connecting plate is connected to the first wall panel and / or the first plate body.

[0008] In some possible embodiments of the first aspect, the load-bearing beam further includes a third wall panel connected between the lower end of the first wall panel and the lower end of the second wall panel; The connector also includes a second connecting plate that is fixedly connected to the first connecting plate, and the second connecting plate is stacked and fixed to the third wall panel.

[0009] In some possible embodiments of the first aspect, the first connecting plate has a first flange extending in a direction away from the first wall plate; and / or, The second connecting plate has a second flange at the end away from the first connecting plate. The second flange is located on the side of the second wall panel away from the first wall panel and is fixedly connected to the second wall panel; and / or, The leaf spring lifting lug bracket mounting structure also includes reinforcing members, which include a first reinforcing plate, a second reinforcing plate and a third reinforcing plate. The third reinforcing plate is connected between the first reinforcing plate and the second reinforcing plate. The first reinforcing plate is stacked and fixed to the first plate body, the second reinforcing plate is stacked and fixed to the second plate body, and the third reinforcing plate is stacked and fixed to the second connecting plate.

[0010] In some possible embodiments of the first aspect, the leaf spring lug bracket further includes a third plate body connected between the ends of the first plate body and the second plate body located on the same side along the length of the vehicle.

[0011] In some possible embodiments of the first aspect, the second plate segment is welded to the second wall plate.

[0012] In some possible embodiments of the first aspect, the leaf spring lug bracket mounting structure further includes a reinforcing component, which includes a reinforcing plate, a reinforcing nut, and a reinforcing bolt. The reinforcing plate is welded to the surface of the second wall panel facing the first wall panel. The second wall panel has a second fixing hole, the reinforcing plate has a first fixing hole, the second plate segment has a third fixing hole, and the reinforcing bolt passes through the first fixing hole, the second fixing hole, and the third fixing hole. The reinforcing nut is threadedly connected to the reinforcing bolt.

[0013] In some possible implementations of the first aspect, the reinforcing nut is located on the side of the reinforcing plate away from the second wall panel and is welded to the reinforcing plate.

[0014] Secondly, embodiments of this application provide a vehicle body, including: Longitudinal beams extending along the length of the vehicle; and In any embodiment of the first aspect, the leaf spring lug bracket mounting structure is wherein the load-bearing beam is part of the longitudinal beam of the undercarriage.

[0015] In some possible embodiments of the second aspect, the longitudinal beam includes a rear longitudinal beam, and the load-bearing beam is a rear longitudinal beam; The rear longitudinal beam includes a first beam segment, a second beam segment, and a third beam segment arranged sequentially in the direction from the front to the rear of the vehicle; in the direction from the front to the rear of the vehicle, the second beam segment extends toward the central axis close to the length of the vehicle, and the leaf spring hanger bracket is installed on the first beam segment.

[0016] Since the undercarriage provided in this embodiment includes the leaf spring hanger bracket mounting structure described in any of the embodiments of the first aspect above, both can solve the same technical problem and achieve the same beneficial effect. Therefore, the beneficial effects of the undercarriage provided in this application embodiment can be referred to the beneficial effects of the leaf spring hanger bracket mounting structure, and will not be repeated here.

[0017] In some possible embodiments of the second aspect, the longitudinal beam includes a front extension beam, a front longitudinal beam, a middle longitudinal beam, and a rear longitudinal beam connected sequentially from the front to the rear of the vehicle, and the front extension beam has an energy-absorbing crumple zone. The lower body also includes a first reinforcing plate, which is located in the internal cavity of the front extension beam and is stacked and fixed to the inner surface of the front extension beam. The first reinforcing plate is located at one end of the energy-absorbing and collapsing zone near the front longitudinal beam.

[0018] In some possible embodiments of the second aspect, the inner surface of the overhang beam includes a first surface and a second surface disposed opposite to each other in the width direction of the vehicle; there are multiple first reinforcing plates, a portion of which are at least fixedly connected to the first surface, and another portion of which are at least fixedly connected to the second surface.

[0019] In some possible embodiments of the second aspect, the longitudinal beam includes a front extension beam, a front longitudinal beam, a middle longitudinal beam, and a rear longitudinal beam connected sequentially from the front to the rear of the vehicle. The front longitudinal beam includes a first sub-front longitudinal beam and a second sub-front longitudinal beam. The first sub-front longitudinal beam is fixedly connected to the front extension beam and has a top-open accommodating space. The end of the second sub-front longitudinal beam near the front extension beam is located within the accommodating space and is fixedly connected to the first sub-front longitudinal beam. At least a portion of the end of the second sub-front longitudinal beam away from the front extension beam is located outside the accommodating space.

[0020] In some possible embodiments of the second aspect, the lower body further includes a second reinforcing plate, which is laminated and fixed to the inner surface of the accommodating space; and / or, The second front longitudinal beam has an open-top accommodating space, and the lower body also includes a third reinforcing plate, which is stacked and fixed to the inner surface of the accommodating space; and / or, The yield strength of the first sub-front longitudinal beam is greater than 950 MPa, the tensile strength of the first sub-front longitudinal beam is greater than 1300 MPa, the yield strength of the second sub-front longitudinal beam is greater than or equal to 420 MPa and less than or equal to 550 MPa, and the tensile strength of the second sub-front longitudinal beam is greater than 780 MPa.

[0021] Thirdly, embodiments of this application provide a vehicle, including: leaf springs and In any embodiment of the second aspect, a leaf spring is mounted on the lower body.

[0022] Since the vehicle provided in this embodiment includes the lower body as described in any of the embodiments of the first aspect above, both can solve the same technical problem and achieve the same beneficial effects. Therefore, the beneficial effects of the vehicle provided in this application embodiment can be referred to the beneficial effects of the lower body, and will not be repeated here. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a leaf spring lifting lug bracket mounting structure provided for some embodiments of this application.

[0024] Figure 2 for Figure 1 The diagram shows the structural schematic of the leaf spring lifting lug bracket installation structure from another perspective.

[0025] Figure 3 for Figure 1 The diagram shows the structural schematic of the leaf spring lifting lug bracket installation structure from another perspective.

[0026] Figure 4 for Figure 3 The diagram shown is a structural schematic from another perspective.

[0027] Figure 5 for Figure 4 The diagram shows the structure of the leaf spring lifting lug bracket.

[0028] Figure 6 for Figure 2 The enlarged view of the portion circled at point A in the shown leaf spring lifting lug bracket installation structure.

[0029] Figure 7 This is a schematic diagram of the assembly of a lower body and a leaf spring provided for some embodiments of this application.

[0030] Figure 8 for Figure 7 The diagram shows the structure of the rear longitudinal beam.

[0031] Figure 9 for Figure 7The diagram shows the assembly of the front longitudinal beam and the front extension beam in the structure shown.

[0032] Figure 10 for Figure 9 A schematic diagram of the cross-sectional structure along line AA in the structure shown.

[0033] Figure 11 for Figure 9 A schematic diagram of a partial structure of the structure shown.

[0034] Figure 12 The diagram shows the structural features of a vehicle provided in some embodiments of this application.

[0035] Explanation of reference numerals in the attached figures: In the diagram: 100. Vehicle. 1. Leaf spring hanger bracket installation structure. 11. Load-bearing beam. 111. First wall panel. 112. Second wall panel. 113. Third wall panel. 12. Leaf spring hanger bracket. 121. First plate body. 122. Second plate body. 1221. First plate segment. 1222. Second plate segment. 1223. Bending segment. 123. Third plate body. 124. Hanger mounting hole. 13. Connector. 131. First connecting plate. 1311. First flange. 132. Second connecting plate. 1321. Second flange. 14. Reinforcing component. 141. First reinforcing plate. 142. Second reinforcing plate. 143. Third reinforcing plate. 15. Reinforcing assembly. 151. Reinforcing plate. 152. Reinforcing nut. 153. Reinforcing bolt. 2. Lower Body. 21. Longitudinal Beam. 211. Front Extension Beam. 2111. Energy-absorbing Crushing Zone. 2112. Groove. 2113. Internal Cavity. 2114. First Surface. 2115. Second Surface. 212. Front Longitudinal Beam. 2121. First Sub-Front Longitudinal Beam. 2121a. Accommodation Space. 2122. Second Sub-Front Longitudinal Beam. 2122a. Accommodation Space. 213. Middle Longitudinal Beam. 214. Rear Longitudinal Beam. 2141. First Beam Segment. 2142. Second Beam Segment. 2143. Third Beam Segment. 22. First Reinforcing Plate. 23. Second Reinforcing Plate. 24. Third Reinforcing Plate. 3. Leaf Spring. A1. Length Direction. A2. Width Direction. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] In the embodiments of this application, the terms "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0038] In the description of the embodiments of this application, the term "multiple" means two or more.

[0039] In the description of the embodiments of this application, the term "and / or" refers to and covers any and all possible combinations of one or more of the associated listed items. The term "and / or" describes an association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "or" relationship.

[0040] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, "linking" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0041] In the description of embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0042] As used herein, “parallel,” “perpendicular,” and “equal” include the described situation and situations that are similar to the described situation, within an acceptable deviation range, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, “parallel” includes absolute parallelism and approximate parallelism, where the acceptable deviation range for approximate parallelism can be, for example, within ±10°; “perpendicular” includes absolute perpendicularity and approximate perpendicularity, where the acceptable deviation range for approximate perpendicularity can also be, for example, within ±10°; “equal” includes absolute equality and approximate equality, where the acceptable deviation range for approximate equality can be, for example, a difference between the two equals less than or equal to 5% of either one.

[0043] Currently, with the acceleration of e-commerce, urbanization, and the continuous growth of urban logistics and distribution demands, the market is placing higher requirements on the cargo-carrying capacity of commercial vehicles (such as new energy commercial vehicles). Cargo box volume, as one of the important design parameters for commercial vehicles, directly affects cargo transportation efficiency and operating costs.

[0044] However, the space utilization of commercial vehicles using related technologies is still insufficient, limiting the cargo box volume. Specifically, in commercial vehicles using leaf springs as shock absorbers, the leaf spring hanger brackets are installed directly below the longitudinal beams of the vehicle body. Therefore, to accommodate the deformation of the leaf springs, the ground clearance of the cargo box floor must be set relatively high. While this design ensures the normal operation of the suspension system, it also limits the internal space of the cargo box.

[0045] To address the aforementioned technical problems, this application provides a leaf spring hanger bracket mounting structure 1, applied to a vehicle 100. Please refer to... Figure 1 and combined Figure 2 ,in, Figure 1 This is a schematic diagram of a leaf spring lifting lug bracket mounting structure 1 provided for some embodiments of this application. Figure 2 for Figure 1 The diagram shows a schematic of the leaf spring hanger bracket mounting structure 1 from another perspective. This leaf spring hanger bracket mounting structure 1 includes a load-bearing beam 11 and a leaf spring hanger bracket 12. The load-bearing beam 11 includes a first wall plate 111 and a second wall plate 112 disposed opposite each other in the vehicle width direction A2. The second wall plate 112 is disposed relative to the first wall plate 111 near the central axis in the vehicle length direction A1. Here, the so-called central axis in the vehicle length direction A1 refers to the central axis C1 extending along the length direction of the vehicle 100 (see...). Figure 7 ).

[0046] The leaf spring hanger bracket 12 includes a first plate 121 and a second plate 122 disposed opposite to each other in the vehicle width direction A2. The first plate 121 is located on the side of the first wall panel 111 away from the second wall panel 112 and is spaced apart from the first wall panel 111.

[0047] The second plate 122 includes a first plate segment 1221 and a second plate segment 1222 connected together. The second plate segment 1222 is located on the side of the second wall panel 112 away from the first wall panel 111 and is fixedly connected to the second wall panel 112. Along the width direction A2 of the vehicle 100, the first plate segment 1221 is located between the second plate segment 1222 and the first wall panel 111, and is below the load-bearing beam 11. The first plate segment 1221 and the first plate 121 are used to install leaf spring lugs. For example, in... Figure 1 In the embodiment shown, the first plate segment 1221 and the first plate body 121 have lifting lug mounting holes 124, and the first plate segment 1221 and the first plate body 121 are equipped with leaf spring lifting lugs through the lifting lug mounting holes 124.

[0048] This configuration, by fixing the second plate segment 1222 of the second plate body 122 of the leaf spring hanger bracket 12 to the second wall panel 112 of the supporting beam 11, and positioning the first plate segment 1221 of the second plate body 122 below the supporting beam 11 and between the second plate segment 1222 and the first wall panel 111, while simultaneously arranging the first plate body 121 and the first wall panel 111 at intervals, allows the overall installation position of the leaf spring hanger bracket 12 to be offset outward from the vehicle 100. This allows the deformation space required for the leaf spring 3, installed on the leaf spring hanger bracket 12 via the leaf spring hanger, to be simultaneously offset outward from the vehicle 100. Consequently, the deformation space required for the leaf spring 3 is misaligned with the supporting beam 11 in the vehicle width direction A2, which helps to reduce the arrangement height of the rear floor of the vehicle 100, thereby increasing the cargo box volume of the vehicle 100 without increasing the overall height of the vehicle 100.

[0049] Please see Figure 2 In some embodiments, the second plate 122 includes a bent section 1223 connected between the first plate segment 1221 and the second plate segment 1222. Exemplarily, the first plate segment 1221, the bent section 1223, and the second plate segment 1222 may, but are not limited to, be integrally formed parts.

[0050] With this configuration, the bending segment 1223 can provide a lateral offset to the first plate segment 1221 relative to the second plate segment 1222, thereby facilitating the placement of the first plate segment 1221 at the target position between the second plate segment 1222 and the first wall panel 111 during assembly.

[0051] Furthermore, it is necessary to explain that in embodiments without the bending segment 1223, the first plate segment 1221 can be configured to extend away from the central axis of the vehicle length direction A1 in the direction from the top of the vehicle 100 to the bottom of the vehicle 100, so that the first plate segment 1221 is located between the second plate segment 1222 and the first wall panel 111, and is below the load-bearing beam 11.

[0052] Please see Figure 3 , Figure 3 for Figure 1 The diagram shows a structural schematic of the leaf spring lug bracket mounting structure 1 from another perspective. In some embodiments, the leaf spring lug bracket mounting structure 1 includes a connector 13, which is fixedly connected to the load-bearing beam 11.

[0053] The connector 13 includes a first connecting plate 131. The first connecting plate 131 is filled between the first wall panel 111 and the first plate body 121. The first connecting plate 131 is connected to the first wall panel 111 and / or the first plate body 121.

[0054] With this configuration, the first connecting plate 131 of the connector 13 fills the gap between the first wall panel 111 and the first plate body 121 and connects to the first wall panel 111 and / or the first plate body 121, so that the load-bearing beam 11 is directly connected to the first plate body 121. In this way, the force borne by the leaf spring lug bracket 12 through the first plate body 121 can be transmitted more directly to the load-bearing beam 11 through the first connecting plate 131, thereby enhancing the overall stability and structural reliability of the leaf spring lug bracket installation structure 1 when bearing loads.

[0055] Furthermore, it is necessary to note that in embodiments without connector 13, the first plate 121 may be directly connected to the load-bearing beam 11 via an extended screw.

[0056] Please see Figure 3 In some embodiments, the supporting beam 11 further includes a third wall plate 113 connected between the lower end of the first wall plate 111 and the lower end of the second wall plate 112. Exemplarily, the first wall plate 111, the second wall plate 112, and the third wall plate 113 can be integrally formed or can be a separate structure. When the first wall plate 111, the second wall plate 112, and the third wall plate 113 are a separate structure, they can be fixedly connected by means of snap-fit, screw connection, or welding.

[0057] The connector 13 also includes a second connecting plate 132 that is fixedly connected to the first connecting plate 131. The second connecting plate 132 and the third wall panel 113 are stacked and fixed together. The second connecting plate 132 and the third wall panel 113 can be fixedly connected by bolts, welding or other methods.

[0058] This configuration allows for the second connecting plate 132 and the third wall plate 113 to be stacked and fixed together, increasing the contact area between the connector 13 and the load-bearing beam 11. In this way, the force borne by the leaf spring lug bracket 12 can be more effectively distributed to the load-bearing beam 11 through the second connecting plate 132. This further improves the overall stability and structural reliability of the leaf spring lug bracket installation structure 1 under load.

[0059] Please see Figure 3 In some embodiments, the first connecting plate 131 has a first flange 1311 extending in a direction away from the first wall panel 111. This configuration, by having the first flange 1311 extending in a direction away from the first wall panel 111, improves the bending stiffness of the first connecting plate 131. Consequently, when subjected to loads from the first plate body 121, the first connecting plate 131 can more effectively suppress its own bending deformation. This further enhances the overall stability and structural reliability of the leaf spring lug bracket mounting structure 1 under load.

[0060] Please see Figure 4 , Figure 4 for Figure 3 The diagram shows a structural schematic from another perspective. In some embodiments, the second connecting plate 132 has a second flange 1321 at the end away from the first connecting plate 131. The second flange 1321 is located on the side of the second wall panel 112 away from the first wall panel 111 (not shown in the figure) and is fixedly connected to the second wall panel 112. The second flange 1321 and the second wall panel 112 can be fixedly connected by bolts, welding, or other methods.

[0061] In this way, the connector 13 can be fixed to both the third wall panel 113 and the second wall panel 112 simultaneously, thereby enhancing the bonding strength between the connector 13 and the load-bearing beam 11 and forming a more stable support structure. This reduces stress concentration and further improves the overall stability and structural reliability of the leaf spring lug bracket installation structure 1 under load.

[0062] Please see Figure 4 In some embodiments, the leaf spring lug bracket mounting structure 1 further includes a reinforcing member 14, which includes a first reinforcing plate 141, a second reinforcing plate 142, and a third reinforcing plate 143, with the third reinforcing plate 143 connected between the first reinforcing plate 141 and the second reinforcing plate 142. Exemplarily, the first reinforcing plate 141, the second reinforcing plate 142, and the third reinforcing plate 143 are integrally formed parts.

[0063] The first reinforcing plate 141 is stacked and fixed to the first plate 121, the second reinforcing plate 142 is stacked and fixed to the second plate 122, and the third reinforcing plate 143 is stacked and fixed to the second connecting plate 132. The connection methods between the first reinforcing plate 141 and the first plate 121, between the second reinforcing plate 142 and the second plate 122, and between the third reinforcing plate 143 and the second connecting plate 132 can be designed with reference to the connection method between the second flange 1321 and the second wall panel 112, and will not be described in detail here.

[0064] In this way, the connection area between the leaf spring lug bracket 12 and the connector 13 can be increased by the reinforcing member 14, so that the load borne by the leaf spring lug bracket 12 can be transferred to the connector 13 more smoothly and evenly through the reinforcing member 14. As a result, the overall strength and fatigue resistance of the leaf spring lug bracket mounting structure 1 can be further improved.

[0065] Please see Figure 5 , Figure 5 for Figure 4 The diagram shows a schematic of the leaf spring hanger bracket 12. In some embodiments, the leaf spring hanger bracket 12 further includes a third plate 123, which is connected between the ends of the first plate 121 and the second plate 122 on the same side along the length direction A1 of the vehicle 100. Exemplarily, the third plate 123, the first plate 121, and the second plate 122 are integrally formed parts.

[0066] In this way, the ends of the first plate 121 and the second plate 122 located on the same side in the length direction A1 can be connected to each other, thereby enhancing the overall structural rigidity of the leaf spring lug bracket 12 and improving its structural stability when subjected to the force of the leaf spring 3. This effectively ensures that the relative position of the lug mounting holes 124 on the first plate 121 and the second plate 122 remains stable during the movement of the leaf spring 3, thus improving the durability and reliability of the leaf spring lug bracket mounting structure 1.

[0067] In some embodiments, the second plate segment 1222 is welded to the second wall panel 112. This makes the second plate segment 1222 and the second wall panel 112 more securely fixed, thereby enhancing the overall rigidity and load-bearing stability of the leaf spring lug bracket mounting structure 1. Of course, this application is not limited to this. In other embodiments, the second plate segment 1222 can also be riveted and fixed to the second wall panel 112 using multiple solid rivets or blind rivets.

[0068] Please see Figure 6 , Figure 6 for Figure 2The diagram shows an enlarged view of the portion circled at point A in the spring leaf lug bracket mounting structure 1. In some embodiments, the spring leaf lug bracket mounting structure 1 further includes a reinforcing component 15, which includes a reinforcing plate 151, a reinforcing nut 152, and a reinforcing bolt 153. The reinforcing plate 151 is welded to the surface of the second wall plate 112 facing the first wall plate 111. The second wall plate 112 has a second fixing hole, the reinforcing plate 151 has a first fixing hole, and the second plate segment 1222 has a third fixing hole. The reinforcing bolt 153 passes through the first fixing hole, the second fixing hole, and the third fixing hole, and the reinforcing nut 152 is threadedly connected to the reinforcing bolt 153.

[0069] This configuration, by welding the reinforcing plate 151 to the second wall plate 112 and utilizing the preload generated by the reinforcing bolts 153 and reinforcing nuts 152 passing through the first, second, and third fixing holes, tightly presses the second plate segment 1222 and the second wall plate 112 together. This adds a frictional constraint provided by the bolt preload between the second wall plate 112 and the second plate segment 1222, further enhancing the connection strength between the leaf spring lug bracket 12 and the load-bearing beam 11, building upon the existing connection method. This improves the durability and reliability of the leaf spring lug bracket installation structure 1.

[0070] In addition, it is necessary to explain that when the second plate segment 1222 is welded to the second wall plate 112, the enhanced connection strength between the spring lug bracket and the load-bearing beam 11 can also resist the concentrated load generated by the bending segment 1223 at the welded joint, thereby reducing the risk of failure at the welded joint due to excessive force and ensuring the long-term reliability of the spring lug bracket installation structure 1.

[0071] Please see Figure 6 In some embodiments, the reinforcing nut 152 is located on the side of the reinforcing plate 151 away from the second wall plate 112 and is welded to the reinforcing plate 151. This allows the reinforcing nut 152 to be fixedly connected to the reinforcing plate 151 as a whole, effectively preventing the reinforcing nut 152 from rotating and ensuring the stable application and long-term maintenance of the preload. This, in turn, enhances the durability and reliability of the leaf spring lug bracket mounting structure 1.

[0072] Please see Figure 7 , Figure 7 This is a schematic diagram of the assembly of a lower body 2 and a leaf spring 3 according to some embodiments of this application. Embodiments of this application also provide a lower body 2, including a longitudinal beam 21 extending along the length direction A1 of the vehicle 100; and a leaf spring hanger bracket mounting structure 1 as described in any of the above embodiments, wherein the load-bearing beam 11 is a part of the longitudinal beam 21 of the lower body 2.

[0073] Since the undercarriage 2 provided in this embodiment includes the leaf spring hanger bracket mounting structure 1 as described in any of the above embodiments, both can solve the same technical problem and achieve the same beneficial effect. Therefore, the beneficial effects of the undercarriage 2 provided in this application embodiment can be referred to the beneficial effects of the leaf spring hanger bracket mounting structure 1, and will not be repeated here.

[0074] For example, in Figure 7 In the illustrated embodiment, the longitudinal beam 21 includes a front extension beam 211, a front longitudinal beam 212, a middle longitudinal beam 213, and the aforementioned rear longitudinal beam 214, which are sequentially connected together from the front to the rear of the vehicle 100. Exemplarily, the front extension beam 211, the front longitudinal beam 212, the middle longitudinal beam 213, and the rear longitudinal beam 214 can be fixed together by welding.

[0075] Please see Figure 8 , Figure 8 for Figure 7 The diagram shows the structure of the rear longitudinal beam 214. In some embodiments, the load-bearing beam 11 is the rear longitudinal beam 214. The rear longitudinal beam 214 includes a first beam segment 2141, a second beam segment 2142, and a third beam segment 2143 arranged sequentially in the direction from the front to the rear of the vehicle 100; wherein, the second beam segment 2142 extends in the direction from the front to the rear of the vehicle 100 toward the central axis close to the vehicle's length direction A1. A leaf spring hanger bracket 12 is mounted on the first beam segment 2141.

[0076] This configuration, by extending the second segment 2142 of the rear longitudinal beam 214 towards the central axis closer to the vehicle's length direction A1, and installing the leaf spring hanger bracket 12 on the first segment 2141 of the rear longitudinal beam 214, ensures that the space required for the deformation movement of the leaf spring 3 after installation through the hanger mounting hole 124 is completely offset from the load-bearing beam 11 in the vehicle width direction A2. As a result, the rear floor does not need to reserve height to accommodate the movement of the leaf spring 3, thereby reducing the ground clearance of the cargo box floor and increasing the internal volume of the cargo box.

[0077] For example, in some embodiments, the connection of the second beam segment 2142 allows the dimension between the central axes of the third beam segments 2143 of the two rear longitudinal beams 214 that are disposed opposite each other in the vehicle width direction A2 to be shortened from 1070 mm between the central axes of the first beam segments 2141 of the two rear longitudinal beams 214 that are disposed opposite each other in the vehicle width direction A2 to 840 mm.

[0078] Please see Figure 9 , Figure 9 for Figure 7The diagram shows the assembly of the front longitudinal beam 212 and the front extension beam 211 in the structure shown. In some embodiments, the front extension beam 211 has an energy-absorbing crumple zone 2111. Exemplarily, the energy-absorbing crumple zone 2111 of the front extension beam 211 can be formed, but is not limited to, by the following manner: multiple grooves 2112 are provided on two opposite outer surfaces of the front extension beam 211 in the width direction A2 of the vehicle 100; multiple grooves 2112 on the same outer surface of the front extension beam 211 are arranged at intervals along the length direction A1 of the vehicle 100.

[0079] The lower body 2 also includes a first reinforcing plate 22, which is located in the internal cavity 2113 of the front extension beam 211 and is stacked and fixed to the inner surface of the front extension beam 211. The first reinforcing plate 22 is located at one end of the energy-absorbing crumple zone 2111 near the front longitudinal beam 212. For example, the first reinforcing plate 22 and the front extension beam 211 can be fixedly connected by welding, bolting, riveting, or other methods.

[0080] This configuration, by placing the first reinforcing plate 22 within the internal cavity 2113 of the front extension beam 211 and stacking it on the inner surface of the front extension beam 211, and positioning the first reinforcing plate 22 at the end of the energy-absorbing crumple zone 2111 near the front longitudinal beam 212, effectively enhances the deformation resistance of the end of the front extension beam 211 near the front longitudinal beam 212, thereby more effectively reducing the impact load transmitted to the front longitudinal beam 212. In this way, the front overhang can be designed to be shorter while maintaining the same structural strength and overall stiffness. Thus, when the overall length of the vehicle 100 remains unchanged, shortening the front overhang allows for more space to be reserved in the cargo box, thereby increasing the cargo box volume.

[0081] In addition, when the vehicle 100 is equipped with a front-mounted drive motor, the weakened rearward-transmitted impact force reduces the impact load on the drive motor that would cause it to move rearward. This helps to prevent the drive motor from shifting significantly rearward during a collision, thus avoiding a collision between the drive motor and the front bulkhead located behind it. As a result, the structural integrity of the front area of ​​the passenger compartment is better maintained, effectively protecting the driver and front passenger.

[0082] Please see Figure 10 , Figure 10 for Figure 9 The diagram shows a cross-sectional view of the structure along line AA (only the front extension beam 211 is shown in section). In some embodiments, the inner surface of the front extension beam 211 includes a first surface 2114 and a second surface 2115 disposed opposite each other in the width direction A2 of the vehicle 100. The number of first reinforcing plates 22 is multiple. For example, the number of first reinforcing plates 22 can be two, three, or more.

[0083] A portion of the first reinforcing plate 22 is at least fixedly connected to the first surface 2114. Another portion of the first reinforcing plate 22 is at least fixedly connected to the second surface 2115. For example, in... Figure 10 In the illustrated embodiment, the first surface 2114 is located on the side of the second surface 2115 near the central axis of the vehicle's length direction A1. The first reinforcing plate 22, which is fixedly connected to the first surface 2114, is also fixedly connected to the inner top and inner bottom surfaces of the extension beam 211. The first reinforcing plate 22, which is fixedly connected to the second surface 2115, is also fixedly connected to the inner bottom surface of the extension beam 211.

[0084] In this way, at least the internal cavity 2113 of the front extension beam 211 can be structurally reinforced by the first reinforcing plate 22 on its two opposite sidewalls in the width direction A2. This allows for a more balanced improvement in the overall structural rigidity of the energy-absorbing crumple zone 2111 near the front longitudinal beam 212, thus enabling more efficient energy absorption at the end of the crumple zone near the front longitudinal beam 212. Consequently, the impact force transmitted to the front longitudinal beam 212 can be further weakened. Therefore, on the one hand, the cargo box volume can be further increased; on the other hand, the driver and front passenger can be protected more effectively. The mechanism of action is similar to that described above and will not be repeated here.

[0085] Please return to the reference. Figure 9 In some embodiments, the front longitudinal beam 212 includes a first sub-front longitudinal beam 2121 and a second sub-front longitudinal beam 2122. The first sub-front longitudinal beam 2121 is fixedly connected to the front extension beam 211 and has a top-open receiving space 2121a. One end of the second sub-front longitudinal beam 2122 near the front extension beam 211 is located within the receiving space 2121a and is fixedly connected to the first sub-front longitudinal beam 2121. At least a portion of the end of the second sub-front longitudinal beam 2122 away from the front extension beam 211 is located outside the receiving space 2121a.

[0086] This increases the structural strength and overall rigidity of the front longitudinal beam 212. On the one hand, it enhances the load-bearing capacity of the driver and passenger seat mounting points at the front longitudinal beam 212; on the other hand, it more effectively resists deformation during a collision, reducing the rearward intrusion displacement of the front subframe. This, in turn, ensures the clearance between the front subframe and the power battery after a collision, preventing the power battery from being impacted.

[0087] In addition, because the structural strength and overall rigidity of the front longitudinal beam 212 are enhanced, it is possible to design the front longitudinal beam 212 to be shorter while maintaining the same structural strength and overall rigidity. When the total length of the vehicle 100 remains unchanged, shortening the length of the front longitudinal beam 212 can reserve more space for the cargo box, thereby further increasing the cargo box volume.

[0088] Please see Figure 11 In some embodiments, the second front longitudinal beam 2122 has a top-open receiving space 2122a, and the lower body 2 also includes a third reinforcing plate 24, which is stacked and fixed to the inner surface of the receiving space 2122a. Exemplarily, the third reinforcing plate 24 can be fixedly connected to the inner surface of the receiving space 2122a by welding, bolting, riveting, or other means.

[0089] This enhances the structural strength and overall stiffness of the second front longitudinal beam 2122, thereby further strengthening the structural strength and overall stiffness of the front longitudinal beam 212. Consequently, on the one hand, the cargo box volume can be further increased; on the other hand, the load-bearing capacity at the driver and passenger seat mounting points on the front longitudinal beam 212 can be enhanced; and furthermore, it can more reliably ensure the clearance between the front subframe and the power battery after a collision, preventing the power battery from being impacted. Its mechanism is similar to that described above and will not be repeated here.

[0090] Please see Figure 11 , Figure 11 for Figure 9 The diagram shows a partial structural schematic. In some embodiments, the lower body 2 further includes a second reinforcing plate 23, which is stacked and fixed to the inner surface of the accommodating space 2121a. The second reinforcing plate 23 can be fixedly connected to the inner surface of the accommodating space 2121a by welding, bolting, riveting, or other methods.

[0091] This enhances the structural strength and overall stiffness of the first front longitudinal beam 2121, which in turn further strengthens the structural strength and overall stiffness of the front longitudinal beam 212. Consequently, on the one hand, the cargo box volume can be further increased; on the other hand, the load-bearing capacity at the driver and passenger seat mounting points on the front longitudinal beam 212 can be enhanced; and furthermore, the clearance between the front subframe and the power battery after a collision can be more reliably guaranteed, preventing the power battery from being impacted. The mechanism of action is similar to that described above and will not be repeated here.

[0092] In some embodiments, the yield strength of the first sub-front longitudinal beam 2121 is greater than 950 MPa. For example, the yield strength of the first sub-front longitudinal beam 2121 can be 955 MPa, 960 MPa, 965 MPa, 970 MPa, 975 MPa, 980 MPa, or 985 MPa. The tensile strength of the first sub-front longitudinal beam 2121 is greater than 1300 MPa. For example, the tensile strength of the first sub-front longitudinal beam 2121 can be 1350 MPa, 1400 MPa, 1450 MPa, 1500 MPa, 1550 MPa, or 1600 MPa.

[0093] The yield strength of the second front longitudinal beam 2122 is greater than or equal to 420 MPa and less than or equal to 550 MPa. For example, the yield strength of the second front longitudinal beam 2122 can be 430 MPa, 450 MPa, 470 MPa, 490 MPa, 510 MPa, or 530 MPa. The tensile strength of the second front longitudinal beam 2122 is greater than 780 MPa. For example, the tensile strength of the second front longitudinal beam 2122 can be 800 MPa, 820 MPa, 840 MPa, 860 MPa, 880 MPa, or 900 MPa.

[0094] This further enhances the structural strength and overall rigidity of the front longitudinal beam 212. Consequently, on the one hand, it increases the cargo box volume; on the other hand, it strengthens the load-bearing capacity of the driver and passenger seat mounting points at the front longitudinal beam 212; and thirdly, it more reliably ensures the clearance between the front subframe and the power battery after a collision, preventing the power battery from being impacted. Its mechanism is similar to that described earlier and will not be repeated here.

[0095] In some embodiments, the leaf spring lug bracket 12 is a sheet metal structure. This is superior to cast brackets in terms of both cost and weight.

[0096] Please see Figure 12 , Figure 12 This is a structural schematic diagram of a vehicle 100 provided in some embodiments of this application. Embodiments of this application provide a vehicle 100, including a leaf spring 3 and a lower body 2 as described in any of the above embodiments, with the leaf spring 3 mounted on the lower body 2. Exemplarily, in... Figure 12 In the illustrated embodiment, vehicle 100 is a CDV model with a MacPherson independent front suspension. However, this application is not limited to this. In other embodiments, vehicle 100 can also be a light truck, mini-truck, or other commercial vehicle.

[0097] Since the vehicle 100 provided in this embodiment includes the lower body 2 as described in any of the above embodiments, both can solve the same technical problem and achieve the same beneficial effects. Therefore, the beneficial effects of the vehicle 100 provided in this application embodiment can be referred to the beneficial effects of the lower body 2, and will not be repeated here.

[0098] Finally, it is necessary to note that a vehicle with a length of 5000mm, a height of 1980mm, and a track width of 1585mm can be equipped with... Figure 7 In the embodiment shown, the lower vehicle body 2 has a front overhang length L1 of 623mm, a cab length L2 of 1312mm, a front compartment floor height of 576mm, a cargo box length L3 of 2865mm, a cargo box floor ground clearance that can be reduced from 540mm to 510mm, and a cargo box volume that can be increased to 7m³.

[0099] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications or equivalent substitutions made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A leaf spring lifting lug bracket mounting structure, characterized in that, The leaf spring hanger mounting structure is applied to a vehicle and comprises: a load bearing beam comprising a first wall plate and a second wall plate oppositely arranged in a vehicle width direction; the second wall plate is arranged close to a center axis of the vehicle in a vehicle length direction relative to the first wall plate; a leaf spring hanger bracket comprising a first plate body and a second plate body oppositely arranged in the vehicle width direction; the first plate body is located on a side of the first wall plate away from the second wall plate and is spaced apart from the first wall plate; the second plate body comprises a first plate segment and a second plate segment connected together; the second plate segment is located on a side of the second wall plate away from the first wall plate and is fixedly connected to the second wall plate; in the vehicle width direction, the first plate segment is located between the second plate segment and the first wall plate and is below the load bearing beam; the first plate segment and the first plate body are used for mounting a leaf spring hanger.

2. The plate spring hanger bracket mounting structure according to claim 1, characterized by a connecting piece fixedly connected to the load bearing beam, the connecting piece comprising a first connecting plate, the first connecting plate being filled between the first wall plate and the first plate body, and the first connecting plate being connected to the first wall plate and / or the first plate body.

3. The plate spring hanger bracket mounting structure according to claim 2, characterized by the load bearing beam further comprises a third wall plate connected between a lower end of the first wall plate and a lower end of the second wall plate; the connecting piece further comprises a second connecting plate fixedly connected to the first connecting plate, and the second connecting plate is fixedly laminated to the third wall plate.

4. The plate spring hanger bracket mounting structure according to claim 3, characterized by the first connecting plate has a first flange extending away from the first wall plate; and / or an end of the second connecting plate away from the first connecting plate is provided with a second flange, the second flange is located on a side of the second wall plate away from the first wall plate and is fixedly connected to the second wall plate; and / or the leaf spring hanger mounting structure further comprises a reinforcing piece, the reinforcing piece comprising a first reinforcing plate, a second reinforcing plate and a third reinforcing plate, the third reinforcing plate being connected between the first reinforcing plate and the second reinforcing plate, the first reinforcing plate being fixedly laminated to the first plate body, the second reinforcing plate being fixedly laminated to the second plate body, and the third reinforcing plate being fixedly laminated to the second connecting plate.

5. The plate spring ear bracket mounting structure according to claim 1, characterized by the leaf spring hanger bracket further comprises a third plate body connected between one end of the first plate body and one end of the second plate body on the same side in the vehicle length direction.

6. The plate spring hanger bracket mounting structure according to claim 1, characterized by a reinforcing assembly is further included, the reinforcing assembly comprising a reinforcing plate, a reinforcing nut and a reinforcing bolt, the reinforcing plate being welded to a surface of the second wall plate facing the first wall plate, the second wall plate having a second fixing hole, the reinforcing plate having a first fixing hole, the second plate segment having a third fixing hole, the reinforcing bolt being arranged through the first fixing hole, the second fixing hole and the third fixing hole, and the reinforcing nut being threadedly connected to the reinforcing bolt.

7. The plate spring hanger bracket mounting structure according to claim 6, characterized by the reinforcing nut is located on a side of the reinforcing plate away from the second wall plate and is welded to the reinforcing plate.

8. A lower car body characterized by, comprises: a longitudinal beam extending in the vehicle length direction; and ​ The leaf spring hanger bracket mounting structure according to any one of claims 1-7, wherein the load bearing beam is a portion of a longitudinal beam of the lower vehicle body.

9. The lower car body according to claim 8, characterized in that The longitudinal beam comprises a rear longitudinal beam, and the load bearing beam is the rear longitudinal beam. The rear longitudinal beam comprises a first beam segment, a second beam segment and a third beam segment arranged in sequence from a head of the vehicle to a tail of the vehicle; in a direction from the head of the vehicle to the tail of the vehicle, the second beam segment extends towards a direction close to a central axis in a length direction of the vehicle, and the leaf spring hanger bracket is mounted to the first beam segment.

10. The lower car body according to claim 9, characterized in that The longitudinal beam comprises a front stretch beam, a front longitudinal beam, a middle longitudinal beam and the rear longitudinal beam connected together in sequence from a head of the vehicle to a tail of the vehicle, and the front stretch beam has an energy-absorbing collapse zone. The lower vehicle body further comprises a first reinforcing plate, the first reinforcing plate is located in an internal cavity of the front stretch beam and is fixedly laminated with an inner surface of the front stretch beam, and the first reinforcing plate is located at one end of the energy-absorbing collapse zone close to the front longitudinal beam.

11. The lower car body according to claim 10, characterized in that The inner surface of the front stretch beam comprises a first surface and a second surface arranged opposite in a width direction of the vehicle; the number of the first reinforcing plates is plural, and at least a part of the first reinforcing plates are fixedly connected to the first surface, and at least a part of the first reinforcing plates are fixedly connected to the second surface.

12. The lower car body according to claim 9, characterized in that The longitudinal beam comprises a front stretch beam, a front longitudinal beam, a middle longitudinal beam and the rear longitudinal beam connected together in sequence from a head of the vehicle to a tail of the vehicle, and the front longitudinal beam comprises a first sub-front longitudinal beam and a second sub-front longitudinal beam, the first sub-front longitudinal beam is fixedly connected with the front stretch beam, and the first sub-front longitudinal beam has a top-open accommodating space; one end of the second sub-front longitudinal beam close to the front stretch beam is located in the accommodating space and is fixedly connected with the first sub-front longitudinal beam, and at least a part of an end of the second sub-front longitudinal beam away from the front stretch beam is located outside the accommodating space.

13. The lower car body according to claim 12, characterized in that Further comprising a second reinforcing plate fixedly laminated with an inner surface of the accommodating space; and / or, The second sub-front longitudinal beam has a top-open accommodating space, and the lower vehicle body further comprises a third reinforcing plate fixedly laminated with an inner surface of the accommodating space; and / or, The yield strength of the first sub-front longitudinal beam is greater than 950 MPa, the tensile strength of the first sub-front longitudinal beam is greater than 1300 MPa, the yield strength of the second sub-front longitudinal beam is greater than or equal to 420 MPa and less than or equal to 550 MPa, and the tensile strength of the second sub-front longitudinal beam is greater than 780 MPa.

14. A vehicle characterized by comprising: Comprise: A leaf spring; And The lower vehicle body according to any one of claims 8-13, wherein the leaf spring is mounted to the lower vehicle body.

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