Full-frame type front auxiliary frame
Through the design of the full-frame front subframe, the integrated molding and welding structure form is used to solve the problems of complex and high cost of welding processes of the existing subframe, and the weight reduction and stiffness enhancement of the frame are achieved.
Patent Information
- Application Number
- CN202421569720.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-07-04
AI Technical Summary
The existing subframe has many welding processes and complex processes, which have adverse effects on the weight and cost control of the entire component.
The design of a full-frame front subframe is adopted, including a first frame and a second frame that are arranged and welded in one direction. Each beam of the first frame is plate-shaped, and each beam of the second frame is stamped in a cap-shaped structure, and is thickened at the stress of the frame.
By reducing the welding process and additional structural sheet metal parts, the cost of the overall component is reduced. At the same time, through structural strengthening, the weight reduction and overall stiffness enhancement of the frame are achieved.
Smart Images
Figure CN222682530U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile auxiliary frames, in particular to a full-frame front auxiliary frame. Background Art
[0002] The front subframe is an important supporting structure that provides installation locations for components such as stabilizer bars, steering gears, motor mounts, and swing arms. It is a key load-bearing component in the frame, and its structural strength and rigidity must be ensured.
[0003] In conventional technology, a steel frame structure is usually used with a large number of structural sheet metal parts attached, and a large number of welding components for reinforcement need to be set in the structure during specific processing;
[0004] However, the above-mentioned structural form makes the welding process of the entire subframe more complicated and has an adverse effect on the weight and cost control of the overall component. Utility Model Content
[0005] The utility model provides a full-frame front sub-frame to solve the problem that the existing sub-frame has many welding procedures, complicated processes and adverse effects on the weight and cost control of the overall components.
[0006] The utility model discloses a full-frame front subframe, comprising a first frame and a second frame which are arranged opposite to each other and welded into one body, wherein the first frame and the second frame both have a first longitudinal beam, a second longitudinal beam, a first cross beam and a second cross beam, and the first longitudinal beam, the second longitudinal beam, the first cross beam and the second cross beam form a closed structure; each beam of the second frame is integrally stamped into a cap-shaped structure, and each beam of the first frame is plate-shaped, and the thickness of the plate is thickened at the stress-bearing position of the frame.
[0007] Furthermore, the second frame is provided with a flange at the connection with the first frame, and the flange of the second frame is parallel to the surface where the connection with the first frame is located.
[0008] Furthermore, the first longitudinal beam and the second longitudinal beam of the first frame each have a sleeve disposed perpendicularly to the first frame near both ends, and the top of the sleeve protrudes from the second frame.
[0009] Furthermore, the end surface of the sleeve is a mounting mating surface with the vehicle body, and the end surface of the sleeve is also provided with rolling gear.
[0010] Furthermore, the first frame also has a first reinforcement member which at least partially surrounds the sleeve.
[0011] Furthermore, the first reinforcement blocks the openings of the first frame and the second frame at both ends of the first longitudinal beam and the second longitudinal beam.
[0012] Furthermore, the first cross beam and the second cross beam are both connected between the first longitudinal beam and the second longitudinal beam, the first cross beam has a vertically arranged front suspension bracket, the suspension bracket is a C-shaped steel plate structure, and the suspension bracket has a connecting hole that is arranged along the length direction of the first cross beam.
[0013] Furthermore, the second cross beam is provided with a rear suspension bracket, and at least three front suspension brackets and rear suspension brackets are provided in total.
[0014] Furthermore, two ends of the second cross beam also have steering brackets arranged perpendicularly to the second frame, and mounting holes of the steering brackets are arranged perpendicularly to the length direction of the second cross beam.
[0015] Furthermore, the first longitudinal beam and the second longitudinal beam both have a lower swing arm bracket extending in a direction away from the second cross beam, and the hole position of the lower swing arm bracket is arranged along the thickness direction of the first frame and the second frame.
[0016] The full-frame front subframe provided by the utility model can achieve the following technical effects:
[0017] By adopting the structural form of integrally forming the first frame and the second frame and then welding them, the additional structural sheet metal parts in the prior art are omitted, thereby reducing a large number of welding components used for reinforcement in the prior art, thereby reducing the welding process and reducing the cost of the overall component; in addition, by setting each beam of the second frame as a hat-type structure and thickening the first frame at the stress-bearing position, the overall structure is strengthened, achieving the effect of reducing the weight of the frame and enhancing the overall rigidity.
[0018] The above general description and the following description are merely exemplary and explanatory and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] One or more embodiments are exemplarily described by corresponding drawings, and these exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are regarded as similar elements, and wherein:
[0020] Figure 1 It is a front structural schematic diagram of a full-frame front subframe in an embodiment of the utility model;
[0021] Figure 2 It is a structural schematic diagram of a first frame in a full-frame front subframe in an embodiment of the utility model;
[0022] Figure 3 yes Figure 2 A magnified image of point A;
[0023] Figure 4 It is a structural schematic diagram of a second frame in a full-frame front subframe in an embodiment of the utility model;
[0024] Figure 5 yes Figure 4 Enlarged view of point B.
[0025] Reference numerals:
[0026] 1. First frame; 2. Second frame; 31. First longitudinal beam; 311. Casing; 312. Hobbing; 313. First reinforcement; 32. Second longitudinal beam; 33. First cross beam; 34. Second cross beam; 35. Front suspension bracket; 36. Rear suspension bracket; 37. Steering bracket; 38. Lower control arm bracket. DETAILED DESCRIPTION
[0027] In order to be able to understand the features and technical contents of the embodiments of the utility model in more detail, the implementation of the embodiments of the utility model is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the utility model. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.
[0028] The terms "first", "second", etc. in the specification and claims of the embodiments of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the embodiments of the utility model described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.
[0029] In the embodiments of the present utility model, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present utility model and its embodiments, and are not intended to limit the indicated devices, elements or components to have specific directions, or to be constructed and operated in specific directions. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present utility model can be understood according to the specific circumstances.
[0030] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the utility model can be understood according to specific circumstances.
[0031] Unless otherwise specified, the term "plurality" means two or more and "plurality" means two or more.
[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present utility model can be combined with each other.
[0033] The front subframe is an important supporting structure that provides installation positions for components such as stabilizer bars, steering gears, motor suspensions, and swing arms. The subframe is a key load-bearing component with complex forces. In order to ensure sufficient strength and rigidity, a steel frame structure is usually used with a large number of structural sheet metal parts. For this reason, a large number of welding components for reinforcement need to be set in the structure, which makes the entire subframe welding process more complicated and has an adverse effect on the weight and cost control of the overall component. In the context of the general environment putting forward higher requirements for lightweight design and vehicle weight reduction, the importance of weight reduction design of the front subframe cannot be ignored. However, in the past, when designing domestic automobiles, in order to ensure strength and rigidity, the performance requirements were often achieved by adding additional reinforcement ribs to the front subframe, resulting in the weight of the front subframe increasing instead of decreasing, which runs counter to the weight reduction demand. For this reason, it is necessary to find a way to optimize the main structure, main parts and processing technology of the front subframe without changing the material of the front subframe, in addition to simply increasing the reinforcement structure and material consumption, to achieve the effect of weight reduction and cost reduction.
[0034] like Figures 1 to 5 As shown, the utility model discloses a full-frame front subframe, including a first frame 1 and a second frame 2 that are arranged oppositely and welded into one body, the first frame 1 and the second frame 2 both have a first longitudinal beam 31, a second longitudinal beam 32, a first cross beam 33 and a second cross beam 34, the first longitudinal beam 31, the second longitudinal beam 32, the first cross beam 33 and the second cross beam 34 form a closed structure; each beam of the second frame 2 is integrally stamped into a hat-shaped structure, and each beam of the first frame 1 is plate-shaped, and the plate thickness is thickened at the stress-bearing position of the frame. Figure 1As shown in , in the embodiment of the utility model, the first frame 1 is at the top and the second frame 2 is at the bottom. The hat-shaped of the second frame 2 refers to the structure that each beam is inverted U-shaped and flanged along the cross-section perpendicular to each beam. Through this structural setting, the hat-shaped structure not only strengthens its own structure, but also its flange is basically parallel to the first frame 1. The structure of the first frame 1 at the connection with the second frame 2 when connected by welding is greatly enhanced. In the embodiment of the real utility model, the frame stress point refers to the bending and torsion loads transmitted at the connection with the body, the suspension bracket, the steering bracket 37, and the lower swing arm bracket 38. In some embodiments of the utility model, the thickness of the first frame and the second frame is 2mm.
[0035] In the above embodiment, the first frame 1 and the second frame 2 are integrally formed and then welded, thereby omitting the additional structural sheet metal parts in the prior art, thereby reducing a large number of welding components used for reinforcement in the prior art, thereby reducing the welding process and reducing the cost of the overall component; in addition, by setting each beam of the second frame 2 as a hat-shaped structure and thickening the first frame 1 at the stress-bearing part, the overall structure is strengthened, achieving the effect of reducing the weight of the frame and enhancing the overall rigidity. In addition, in the embodiment of the utility model, a plurality of 4mm thick sheet metal parts are built inside the hat-shaped structure of the second frame 2.
[0036] Alternatively, if Figure 1 As shown in the figure, the second frame 2 is provided with a flange at the connection with the first frame 1, and the flange of the second frame 2 is parallel to the surface where the connection with the first frame 1 is located. In the embodiment of the utility model, the first frame 1 and the second frame 2 are both stamping parts, and are fixed by welding at the flange.
[0037] Alternatively, if Figure 2 and Figure 3As shown in , the first longitudinal beam 31 and the second longitudinal beam 32 of the first frame 1 have a sleeve 311 vertically arranged with the first frame 1 near both ends, and the top of the sleeve 311 protrudes from the second frame 2. It should be pointed out here that the sleeve 311 is a hollow steel column structure, which is connected to the first frame 1 by welding, and the front subframe is connected to the body by bolt fastening through the sleeve 311. The sleeve 311 bears the fastening load and plays a positioning role. The positioning here not only refers to the positioning with the body during connection, but also plays a positioning role when the first frame 1 and the second frame 2 are welded. Specifically, a hole corresponding to the sleeve 311 can be opened on the second frame 2. When the first frame 1 and the second frame 2 are docked, the sleeve 311 is inserted into the hole on the second frame 2, so that the positioning of the first frame 1 and the second frame 2 can be achieved. When welding and connecting, the gap between the sleeve 311 and the hole can be filled in the form of full welding. In the embodiment of the utility model, the thickness of the sleeve 311 is 6mm.
[0038] Alternatively, if Figure 3 As shown in , the end face of the sleeve 311 is the mounting mating face with the vehicle body, and the end face of the sleeve 311 is also provided with a hob 312. The provision of the hob 312 can improve the friction when the end face of the sleeve 311 is connected to the vehicle body, thereby improving the stability of the connection between the front subframe and the vehicle body.
[0039] Alternatively, if Figure 3 As shown in , the first frame 1 also has a first reinforcement member 313 that at least partially surrounds the sleeve 311. In the embodiment of the utility model, the first reinforcement member 313 can be set to an L-shaped structure, one end of which is welded to the first frame 1. The first reinforcement member 313 is provided with an arc surface that matches the outer wall of the sleeve 311 and fits the sleeve 311. At the same time, a welding window can be opened to achieve reliable welding and fixing with the sleeve 311. In this way, the connection reliability between the sleeve 311 and the first frame 1 is further improved by the provision of the first reinforcement member 313.
[0040] Optionally, in an embodiment of the present utility model, in order to further improve the strength of the connection structure between the first frame 1 and the second frame 2, as Figure 4 and Figure 5 As shown in the figure, the first reinforcement 313 blocks the openings of the first frame 1 and the second frame 2 at both ends of the first longitudinal beam 31 and the second longitudinal beam 32. The provision of the first reinforcement 313 not only improves the fixing reliability of the sleeve 311, but also improves the structural strength of the first frame 1 and the second frame 2 connected at the opening.
[0041] Alternatively, if Figure 1As shown in , the first cross beam 33 and the second cross beam 34 are both connected between the first longitudinal beam 31 and the second longitudinal beam 32. The first cross beam 33 has a vertically arranged front suspension bracket 35, which is a C-shaped steel plate structure, and has a connecting hole arranged along the length direction of the first cross beam 33. In the embodiment of the utility model, the front suspension bracket 35 has two left and right ones, which are connected to the first cross beam 33 by welding, and are connected by bolts to provide positioning for the front drive assembly and connected to the suspension assembly providing a buffer function.
[0042] Alternatively, if Figure 1 As shown in , the second cross beam 34 is provided with a rear suspension bracket 36, and at least three front suspension brackets 35 and rear suspension brackets 36 are provided. In the embodiment of the utility model, there is one rear suspension bracket 36, which is provided in the middle position of the second cross beam 34; when specifically provided, the front suspension bracket and the rear suspension bracket can both adopt a steel plate stamping structure of equal thickness and weld hexagonal nuts on the side to achieve connection with the front drive assembly and the suspension assembly.
[0043] Optionally, please continue to refer to Figure 1 The two ends of the second cross beam 34 also have steering brackets 37 arranged perpendicularly to the second frame 2, and the mounting holes of the steering brackets 37 are arranged perpendicularly to the length direction of the second cross beam 34. In the embodiment of the utility model, the steering brackets 37 are connected to the steering gear with tie rod assembly and the front subframe by bolt fastening.
[0044] Alternatively, if Figure 1 As shown in , the first longitudinal beam 31 and the second longitudinal beam 32 are both provided with a lower swing arm bracket 38 extending in a direction away from the second cross beam 34, and the hole position of the lower swing arm bracket 38 is arranged along the thickness direction of the first frame 1 and the second frame 2. In the embodiment of the utility model, the structure of the lower swing arm bracket 38 can also be stamped with equal-thickness steel plates and connected to the first frame 1 and the second frame 2 by welding; the lower swing arm bracket 38 and the hexagonal welding nut arranged on the longitudinal beam jointly assume the function of connecting the lower swing arm to the front subframe in the form of bolt fastening.
[0045] Application scenario of an exemplary embodiment:
[0046] like Figures 1 to 5As shown, during the specific installation, the first frame 1 and the second frame 2 are first stamped and formed, and then the sleeve 311 and the first reinforcement 313 are welded on the first frame 1, and a corresponding hole for the sleeve 311 to pass through is opened on the second frame 2, and then the first frame 1 and the second frame 2 are connected, so that the sleeve 311 on the first frame 1 passes through the hole on the second frame 2, and then the first frame 1 and the second frame 2 are welded; after the welding is completed, the front suspension bracket 35, the rear suspension bracket 36, the steering bracket 37 and the lower swing arm bracket 38 are welded and connected; in the embodiment of the utility model, the thickness of the front suspension bracket 35, the rear suspension bracket 36, the steering bracket 37 and the lower swing arm bracket 38 are all 3 mm.
[0047] The above description and the accompanying drawings fully illustrate the embodiments of the utility model so that those skilled in the art can practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. The embodiments of the utility model are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.
Claims
1. A full-frame front subframe, characterized in that: include: A first frame (1) and a second frame (2) are arranged opposite to each other and welded into one body, wherein the first frame (1) and the second frame (2) both have a first longitudinal beam (31), a second longitudinal beam (32), a first cross beam (33) and a second cross beam (34), and the first longitudinal beam (31), the second longitudinal beam (32), the first cross beam (33) and the second cross beam (34) form a closed structure; each beam of the second frame (2) is integrally stamped into a hat-shaped structure, and each beam of the first frame (1) is plate-shaped, and the plate thickness is thickened at a stress-bearing position of the frame.
2. The full-frame front subframe according to claim 1, characterized in that: The second frame (2) is provided with a flange at the connection with the first frame (1), and the flange of the second frame (2) is parallel to the surface where the connection with the first frame (1) is located.
3. The full-frame front subframe according to claim 2, characterized in that: The first longitudinal beam (31) and the second longitudinal beam (32) of the first frame (1) are provided with sleeves (311) arranged perpendicular to the first frame (1) near both ends, and the top of the sleeves (311) protrudes from the second frame (2).
4. The full-frame front subframe according to claim 3, characterized in that: The end surface of the sleeve (311) is a mounting matching surface with the vehicle body, and the end surface of the sleeve (311) is also provided with a rolling gear (312).
5. The full-frame front subframe according to claim 4, characterized in that: The first frame (1) also has a first reinforcement member (313) which at least partially surrounds the sleeve (311).
6. The full-frame front subframe according to claim 5, characterized in that: The first reinforcement member (313) blocks the openings of the first frame (1) and the second frame (2) at both ends of the first longitudinal beam (31) and the second longitudinal beam (32).
7. The full-frame front subframe according to claim 1, characterized in that: The first cross beam (33) and the second cross beam (34) are both connected between the first longitudinal beam (31) and the second longitudinal beam (32); the first cross beam (33) is provided with a vertically arranged front suspension bracket (35); the suspension bracket is a C-shaped steel plate structure; the suspension bracket is provided with a connection hole penetrating along the length direction of the first cross beam (33).
8. The full-frame front subframe according to claim 7, characterized in that: The second cross beam (34) is provided with a rear suspension bracket (36), and at least three front suspension brackets (35) and rear suspension brackets (36) are provided in total.
9. The full-frame front subframe according to claim 7, characterized in that: Both ends of the second cross beam (34) also have steering brackets (37) arranged perpendicularly to the second frame (2); the mounting holes of the steering brackets (37) are arranged perpendicularly to the length direction of the second cross beam (34).
10. The full-frame front subframe according to claim 9, characterized in that: The first longitudinal beam (31) and the second longitudinal beam (32) are both provided with a lower swing arm bracket (38) extending in a direction away from the second cross beam (34), and the hole position of the lower swing arm bracket (38) is arranged along the thickness direction of the first frame (1) and the second frame (2).