Auxiliary frame mounting bracket structure and vehicle
By installing brackets on the left and right sides of the subframe and installing extension plates to increase the welding area, the problem of insufficient bearing capacity of the traditional subframe structure is solved, the safety performance and quality of the vehicle are improved, and the durability of the weld is extended.
Patent Information
- Application Number
- CN202421293244.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-06-06
AI Technical Summary
The subframe structure of traditional vehicles has shortcomings in bearing capacity and safety performance, resulting in limited driving safety and vehicle quality.
A subframe mounting bracket structure is designed, by installing a symmetrical mounting bracket body on both left and right sides of the subframe, and providing a first extension plate extending to the front side and a second extension plate extending to the rear at its lower end, Large welding area with the subframe improves the stress at the end of the weld, reduces sudden change in stiffness, and improves bearing capacity.
By optimizing the installation bracket structure, the bearing capacity and durability of the subframe are improved, thereby improving the safety performance and quality of the vehicle, reducing stress concentration at the end of the weld, and extending the service life of the weld.
Smart Images
Figure CN222291822U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vehicles, and more specifically, relates to a sub-frame mounting bracket structure and a vehicle. Background Art
[0002] The subframe can be regarded as the skeleton of the front and rear axles, and is a component of the front and rear axles. The subframe is not a complete frame, but a bracket that supports the front and rear axles and suspension, so that the axles and suspension are connected to the "main frame" through it, and it is customarily called the "subframe". The function of the subframe is to block vibration and noise and reduce their direct entry into the car compartment, so it mostly appears on luxury cars and off-road vehicles, and some cars also install subframes for the engine. The traditional load-bearing body without a subframe has its suspension directly connected to the body steel plate. Therefore, the suspension rocker arm mechanism of the front and rear axles are all loose parts, not assemblies. After the birth of the subframe, the front and rear suspensions can be assembled on the subframe first to form an axle assembly, and then this assembly can be installed on the body together.
[0003] The subframe is a very important safety and load-bearing component in the chassis of a passenger car. It supports the load mass of the front and rear axles, isolates the vibration of the drive unit, and transmits road excitation to the subframe through the suspension structure. Therefore, whether the strength of the subframe meets the requirements is directly related to driving safety.
[0004] The transmission path of road excitation is: tire, steering knuckle, control arm, subframe, and body. The control arm is connected to the subframe through a mounting bracket. By optimizing the structure of the mounting bracket, the bearing capacity of the subframe is improved, thereby improving the safety performance and quality of the vehicle. Utility Model Content
[0005] The purpose of the utility model is to provide a sub-frame mounting bracket structure, which improves the bearing capacity of the sub-frame by optimizing the structure of the mounting bracket, thereby improving the safety performance and quality of the vehicle.
[0006] To achieve the above object, the technical solution adopted by the utility model is: to provide a sub-frame mounting bracket structure, including two mounting bracket bodies symmetrically mounted on the left and right sides of the sub-frame, the two mounting bracket bodies are respectively used to connect the control arms on the corresponding sides;
[0007] A first extension plate extending forward and a second extension plate extending backward are disposed at the lower end of the mounting bracket body, and the first extension plate and the second extension plate are respectively fixed to the sub-frame along the length direction.
[0008] In a possible implementation manner, a front end of the first extension plate is fixed to a connection structure between the frame and the sub-frame.
[0009] In a possible implementation, the mounting bracket body includes a first mounting plate body and a second mounting plate body, the first mounting plate body and the second mounting plate body are fixed on the sub-frame at intervals along the front-to-back direction, a connecting plate body is provided between the first mounting plate body and the second mounting plate body, the connecting plate body is connected to the upper ends of the first mounting plate body and the second mounting plate body and is fixed to the sub-frame, the first extension plate is connected to the lower end of the first mounting plate body, and the second extension plate is connected to the lower end of the second mounting plate body.
[0010] In a possible implementation manner, the first mounting plate body and the connecting plate body are integrally formed, and the second mounting plate body and the connecting plate body are fixed by welding.
[0011] In a possible implementation manner, an open groove is formed on the connecting plate body, and an opening direction of the open groove faces outward.
[0012] In a possible implementation, the width of the opening groove increases from inside to outside.
[0013] In a possible implementation, a first flange bent forward is provided on the outer side of the first mounting plate body, and a second flange bent backward is provided on the outer side of the second mounting plate body.
[0014] In a possible implementation, a first connecting plate is connected between the first mounting plate and the first extension plate, an outer side of the first connecting plate is connected to the first flange, and a front end of the first connecting plate is welded to a connecting structure between the frame and the sub-frame.
[0015] In a possible implementation manner, a second connecting plate is connected between the second mounting plate and the second extension plate, and an outer side of the second connecting plate is connected to the second flange.
[0016] The beneficial effect of a sub-frame mounting bracket structure provided by the utility model is that: compared with the prior art, the mounting bracket body is respectively connected to the sub-frame and the control arm, the two mounting bracket bodies are respectively installed on the left and right sides of the sub-frame, the mounting bracket body is provided with a first extension plate and a second extension plate, the first extension plate extends to the front side and is welded to the sub-frame, and the second extension plate extends to the rear side and is welded to the sub-frame, by arranging the first extension plate and the second extension plate, the welding area of the mounting bracket body and the sub-frame in the length direction is increased, and the connection area of the mounting bracket body and the sub-frame is changed, thereby reducing the sudden change in stiffness, improving the force at the end of the weld, thereby improving the durability of the position, improving the bearing capacity of the sub-frame, and thus improving the safety performance and quality of the vehicle.
[0017] The utility model also provides a vehicle, comprising the auxiliary frame mounting bracket structure.
[0018] The beneficial effect of a vehicle provided by the utility model is that: compared with the prior art, the vehicle uses the above-mentioned subframe mounting bracket structure, and therefore has the same beneficial effect as the subframe mounting bracket structure, and improves the bearing capacity of the mounting bracket body. By optimizing the structure of the mounting bracket body, the stress concentration caused by the sudden change in the structure at the end of the weld is reduced, and the durability of the weld is improved while reducing the weight. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 A schematic diagram of the structure of a sub-frame mounting bracket structure provided by the utility model;
[0021] Figure 2 for Figure 1 A partial enlarged view of the middle A;
[0022] Figure 3 This is a structural schematic diagram of the mounting bracket body provided by the utility model.
[0023] Description of reference numerals:
[0024] 100, subframe; 110, front crossbeam; 120, longitudinal beam; 130, connection structure; 200, mounting bracket body; 210, first mounting plate body; 211, first flange; 220, second mounting plate body; 221, second flange; 230, connecting plate body; 231, opening groove; 240, first extension plate; 250, second extension plate; 260, first connecting plate; 270, second connecting plate. DETAILED DESCRIPTION
[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0026] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.
[0027] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", "high", "low", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the utility model.
[0028] See also Figure 1 , Figure 2 as well as Figure 3 Now, a sub-frame mounting bracket structure provided by the utility model is described. A sub-frame mounting bracket structure includes two mounting bracket bodies 200 symmetrically mounted on the left and right sides of the sub-frame 100, and the two mounting bracket bodies 200 are respectively used to connect the control arms on the corresponding sides; the lower end of the mounting bracket body 200 is provided with a first extension plate 240 extending forward and a second extension plate 250 extending backward, and the first extension plate 240 and the second extension plate 250 are respectively welded to the sub-frame 100 along the length direction.
[0029] The utility model provides a sub-frame mounting bracket structure. Compared with the prior art, the mounting bracket body 200 is respectively connected to the sub-frame 100 and the control arm, and the two mounting bracket bodies 200 are respectively installed on the left and right sides of the sub-frame 100. The mounting bracket body 200 has a first extension plate 240 and a second extension plate 250. The first extension plate 240 extends to the front side and is welded to the sub-frame 100, and the second extension plate 250 extends to the rear side and is welded to the sub-frame 100. By arranging the first extension plate 240 and the second extension plate 250, the welding area of the mounting bracket body 200 and the sub-frame 100 in the length direction is increased, and the connection area between the mounting bracket body 200 and the sub-frame 100 is changed, thereby reducing the stiffness mutation, improving the force at the end of the weld, thereby improving the durability of the position, improving the bearing capacity of the sub-frame 100, and thus improving the safety performance and quality of the vehicle.
[0030] It is worth noting that the subframe 100 can be regarded as the skeleton of the front and rear axles, and is a component of the front and rear axles. The subframe 100 is not a complete frame, but a bracket that supports the front and rear axles and suspension, so that the axles and suspension are connected to the "main frame" through it, and is customarily called the "subframe". The function of the subframe is to block vibration and noise and reduce their direct entry into the car compartment, so it mostly appears on luxury cars and off-road vehicles, and some cars also install subframes for the engine. The suspension of the traditional load-bearing body without the subframe 100 is directly connected to the body steel plate. Therefore, the suspension rocker arm mechanism of the front and rear axles is a separate part, not an assembly. After the birth of the subframe 100, the front and rear suspensions can be assembled on the subframe 100 to form an axle assembly, and then the assembly can be installed on the body together.
[0031] The sub-frame 100 includes longitudinal beams 120 on both sides and a front cross beam 110 on the front side, and the front cross beam 110 is welded to the front ends of the two longitudinal beams 120, thereby forming the main structure of the sub-frame 100. A connecting structure 130 is installed at the outer front end of the longitudinal beam 120, and the connecting structure 130 is used to connect the frame and the sub-frame 100, thereby forming a transmission path from the sub-frame 100 to the frame.
[0032] The connection structure 130 includes a square tube vertically welded to the outer front end of the longitudinal beam 120, a shaft sleeve is arranged inside the square tube, and connection holes are respectively opened at the upper and lower ends of the square tube. The connection shaft is penetrated through the shaft sleeve and the connection hole to realize the connection between the frame and the subframe 100.
[0033] In some embodiments, see Figures 2 to 3 , the front end of the first extension plate 240 is welded to the connection structure 130 between the vehicle frame and the sub-frame 100. That is, the front end of the first extension plate 240 is welded to the rear side wall of the square tube, which can increase the welding area of the first extension plate 240, so that the first extension plate 240 has both the welding area in the front-to-back direction and the welding area in the left-to-right direction, thereby improving the structural strength of the mounting bracket body 200 and improving the weakness of the poor bearing capacity brought by the mounting bracket body 200.
[0034] In some embodiments, see Figures 2 to 3 The mounting bracket body 200 includes a first mounting plate body 210 and a second mounting plate body 220. The first mounting plate body 210 and the second mounting plate are both longitudinally arranged and parallel to each other. The first mounting plate body 210 and the second mounting plate are welded to the sub-frame 100 at intervals along the front-to-back direction. The first mounting plate body 210 and the second mounting plate are welded to the longitudinal beam 120 of the sub-frame 100 in a conformal manner, which can increase the welding area of the first mounting plate body 210 and the second mounting plate and the longitudinal beam 120 of the sub-frame 100 and improve the structural strength.
[0035] A connecting plate 230 is provided between the first mounting plate 210 and the second mounting plate 220. The connecting plate 230 is connected to the upper ends of the first mounting plate 210 and the second mounting plate 220 and is welded and fixed to the sub-frame 100. The connecting plate 230 is also conformally welded to the longitudinal beam 120 of the sub-frame 100, thereby increasing the welding area between the connecting plate 230 and the longitudinal beam 120 of the sub-frame 100 and improving the structural strength.
[0036] The first extension plate 240 is connected to the lower end of the first mounting plate body 210, and the first extension plate 240 and the first mounting plate body 210 form an L-shaped structure. The second extension plate 250 is connected to the lower end of the second mounting plate body 220, and the second extension plate 250 and the second mounting plate body 220 also form an L-shaped structure. The first extension plate 240 and the second extension plate 250 can extend the length of the weld with the longitudinal beam 120 of the subframe 100, thereby improving the stiffness mutation at the end of the weld and improving the durability of the weld.
[0037] Specifically, the first mounting plate body 210 and the connecting plate body 230 are integrally formed, and the first mounting plate body 210 and the connecting plate body 230 are formed by pressing, and a transition fillet is reserved in the bending area to reduce internal stress. The second mounting plate body 220 and the connecting plate body 230 are welded and fixed. One end of the rear side of the connecting plate body 230 is welded to the front end surface of the second mounting plate body 220, and the weld is arranged along the left and right width direction of the connecting plate body 230, which can ensure the connection strength between the second mounting plate body 220 and the connecting plate body 230.
[0038] In addition, the first mounting plate 210 and the second mounting plate 220 are provided with control arm mounting holes, and the two control arm mounting holes are used to cooperate with each other to mount the control arms on the corresponding sides. Similarly, weight reduction holes and corresponding wiring harness holes can be provided on the first mounting plate 210 and the second mounting plate 220 to improve the functionality of the first mounting plate 210 and the second mounting plate 220.
[0039] Also, see Figure 2 and Figure 3 The connecting plate body 230 is provided with an opening groove 231, and the opening direction of the opening groove 231 faces outward. The opening groove 231 can reduce the deadweight of the mounting bracket body 200, which meets the requirements of the front quantization of the vehicle. At the same time, the setting of the opening groove 231 can also improve the deformation ability of the connecting plate body 230, reduce the rigidity of the end of the weld between the connecting plate body 230 and the second mounting plate body 220, and improve the durability of the weld.
[0040] Preferably, the width of the opening groove 231 increases from the inside to the outside, which can greatly improve the deformation capacity of the outer side of the connecting plate body 230, further reduce the stiffness of the end of the weld between the connecting plate body 230 and the second mounting plate body 220, and improve the durability of the weld.
[0041] Transition fillets are provided on the inner and outer sides of the opening groove 231 to avoid stress concentration.
[0042] See also Figure 2 and Figure 3 The first mounting plate body 210 is provided with a first flange 211 bent forward on the outside, the first flange 211 is integrally formed with the first mounting plate, and a transition fillet is provided between the first flange 211 and the first mounting plate to reduce the internal stress in the bending area. The second mounting plate body 220 is provided with a second flange 221 bent backward on the outside, the second flange 221 is integrally formed with the second mounting plate, and a transition fillet is provided between the second flange 221 and the second mounting plate to reduce the internal stress in the bending area.
[0043] In some embodiments, see Figure 2 and Figure 3 A first connecting plate 260 is connected between the first mounting plate and the first extension plate 240. The outer side of the first connecting plate 260 is connected to the first flange 211. The first mounting plate, the first extension plate 240 and the first flange 211 are integrally formed to form a stable integral structure, which can improve the overall structural strength. The front end of the first connecting plate 260 is welded to the connecting structure 130 between the frame and the sub-frame 100, that is, the front end of the first connecting plate 260 is welded to the rear side wall of the square tube, which can increase the welding area of the first extension plate 240, so that the first extension plate 240 has both the welding area in the front-to-back direction and the welding area in the left-to-right direction, thereby improving the structural strength of the mounting bracket body 200 and improving the weakness of the poor bearing capacity brought by the mounting bracket body 200. In addition, the outer side of the first connecting plate 260 forms an arc edge to avoid the structural mutation area, avoid excessive internal stress, and ensure its own structural strength.
[0044] In some embodiments, see Figure 2 and Figure 3 A second connecting plate 270 is connected between the second mounting plate and the second extension plate 250, and the outer side of the second connecting plate 270 is connected to the second flange 221. The second mounting plate, the second extension plate 250 and the second flange 221 are integrally formed to form a stable integral structure, which can improve the overall structural strength.
[0045] Based on the same inventive concept, the utility model also provides a vehicle, which uses the above-mentioned subframe mounting bracket structure, and thus has the same beneficial effects as the subframe mounting bracket structure, improves the bearing capacity of the mounting bracket body 200, and reduces the stress concentration caused by the structural mutation at the end of the weld by optimizing the structure of the mounting bracket body 200, thereby improving the durability of the weld while reducing the weight.
[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A sub-frame mounting bracket structure, characterized in that: It comprises two mounting bracket bodies (200) symmetrically mounted on the left and right sides of the auxiliary frame (100), and the two mounting bracket bodies (200) are respectively used to connect the control arms on the corresponding sides; The lower end of the mounting bracket body (200) is provided with a first extension plate (240) extending forward and a second extension plate (250) extending backward, and the first extension plate (240) and the second extension plate (250) are respectively fixed to the sub-frame (100) along the length direction.
2. A sub-frame mounting bracket structure as claimed in claim 1, characterized in that: The front end of the first extension plate (240) is fixed to the connection structure (130) between the vehicle frame and the sub-frame (100).
3. A sub-frame mounting bracket structure as claimed in claim 1 or 2, characterized in that: The mounting bracket body (200) comprises a first mounting plate body (210) and a second mounting plate body (220); the first mounting plate body (210) and the second mounting plate body (220) are fixed on the sub-frame (100) at intervals along the front-rear direction; a connecting plate body (230) is provided between the first mounting plate body (210) and the second mounting plate body (220); the connecting plate body (230) is connected to the upper ends of the first mounting plate body (210) and the second mounting plate body (220) and is fixed to the sub-frame (100); the first extension plate (240) is connected to the lower end of the first mounting plate body (210); and the second extension plate (250) is connected to the lower end of the second mounting plate body (220).
4. A sub-frame mounting bracket structure as claimed in claim 3, characterized in that: The first mounting plate body (210) and the connecting plate body (230) are integrally formed, and the second mounting plate body (220) and the connecting plate body (230) are fixed by welding.
5. A sub-frame mounting bracket structure as claimed in claim 3, characterized in that: An opening groove (231) is provided on the connecting plate body (230), and the opening direction of the opening groove (231) faces outward.
6. A sub-frame mounting bracket structure as claimed in claim 5, characterized in that: The width of the opening groove (231) increases from the inside to the outside.
7. A sub-frame mounting bracket structure as claimed in claim 3, characterized in that: The outer side of the first installation plate body (210) is provided with a first flange (211) bent forward, and the outer side of the second installation plate body (220) is provided with a second flange (221) bent backward.
8. A sub-frame mounting bracket structure as claimed in claim 7, characterized in that: A first connecting plate (260) is connected between the first mounting plate and the first extension plate (240), the outer side of the first connecting plate (260) is connected to the first flange (211), and the front end of the first connecting plate (260) is welded to the connecting structure (130) between the vehicle frame and the sub-frame (100).
9. A sub-frame mounting bracket structure as claimed in claim 7, characterized in that: A second connecting plate (270) is connected between the second mounting plate and the second extension plate (250), and the outer side of the second connecting plate (270) is connected to the second flange (221).
10. A vehicle, characterized in that: It comprises a sub-frame mounting bracket structure as described in any one of claims 1-9.