Auxiliary frame structure and vehicle
Through the integrated installation bracket and suspended installation bracket made of aluminum alloy, combined with slot-wrapped fit and structural optimization, the problem of difficulty in taking into account the cost and performance of the existing subframe is solved, and the high strength and mass production feasibility of the subframe are achieved.
Patent Information
- Application Number
- CN202420916597.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-04-28
AI Technical Summary
The existing aluminum alloy subframe is difficult to take into account both cost and performance when designing, resulting in the limitation of the feasibility of mass production of subframes.
The front-end mounting bracket and front-suspended mounting bracket made of aluminum alloy form a wrap-fit through slots to increase the contact area, improve welding strength and connection rigidity, and at the same time optimize the structure to improve overall strength.
It effectively improves the overall strength and welding strength of the subframe, improves the handling performance, and ensures that the designed subframe is feasible for mass production while ensuring that the cost does not increase.
Smart Images
Figure CN222728078U_ABST
Abstract
Description
Technical Field
[0001] The utility model is used in the field of automobiles, and particularly relates to a subframe structure and a vehicle. Background Art
[0002] The subframe is an important part of the chassis, used to support the front and rear axles and suspension of the car, and connect the suspension system and body system components. The shape of the subframe affects the performance of the subframe, and then affects the handling performance of the whole vehicle. However, while improving the performance, the cost must also be taken into account. At present, aluminum alloy is more and more commonly used in subframes, but how to give full play to the high rigidity advantages of aluminum alloy subframes while ensuring the optimal cost is particularly important;
[0003] There are many types of aluminum alloy subframes available on the market, including casting, extrusion, and even a combination of casting and extrusion. However, it is difficult to balance cost and performance when designing these products, resulting in a loss of one while focusing on the other, reducing the feasibility of mass production of the subframes. Utility Model Content
[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a subframe structure and a vehicle.
[0005] The technical solution adopted by the utility model to solve its technical problems is:
[0006] In a first aspect, a subframe structure comprises a front end first mounting bracket, a front end second mounting bracket and a front cross beam, the front end first mounting bracket comprises a front end first body mounting bracket and a front suspension first mounting bracket, the front end first body mounting bracket and the front suspension first mounting bracket are made of aluminum alloy in one piece, the front end second mounting bracket comprises a front end second body mounting bracket and a front suspension second mounting bracket, the front end second body mounting bracket and the front suspension second mounting bracket are made of aluminum alloy in one piece, the front end first mounting bracket is provided with a first slot extending along the length direction of the front cross beam, the front end second mounting bracket is provided with a second slot extending along the length direction of the front cross beam, the first end of the front cross beam is embedded in the first slot and welded to the front end first mounting bracket, and the second end of the front cross beam is embedded in the second slot and welded to the front end second mounting bracket.
[0007] In combination with the first aspect, in certain implementations of the first aspect, the front end first body mounting bracket is located on a side of the front suspension first mounting bracket away from the front end second mounting bracket, the front end first body mounting bracket extends obliquely upward of the front end first mounting bracket, the front suspension first mounting bracket extends upward of the front end first mounting bracket, and a connecting rib is provided between the front end first body mounting bracket and the front suspension first mounting bracket.
[0008] In combination with the first aspect and the above-mentioned implementations, in certain implementations of the first aspect, the front end second body mounting bracket is located on a side of the front suspension second mounting bracket away from the front end first mounting bracket, the front end second body mounting bracket extends obliquely upward of the front end second mounting bracket, the front suspension second mounting bracket extends upward of the front end second mounting bracket, and a connecting rib is provided between the front end second body mounting bracket and the front suspension second mounting bracket.
[0009] In combination with the first aspect and the above-mentioned implementation methods, in some implementation methods of the first aspect, the front suspension first mounting bracket and the front suspension second mounting bracket both include a first support plate and a second support plate, a U-shaped groove space is formed between the first support plate and the second support plate, and transverse reinforcement ribs are provided inside the U-shaped groove space.
[0010] In combination with the first aspect and the above-mentioned implementations, in certain implementations of the first aspect, the front end first mounting bracket and the front end second mounting bracket both include a front cross beam connecting portion, the front cross beam connecting portion having a top wall plate, a side wall plate and a bottom wall plate, and the top wall plate, the side wall plate and the bottom wall plate define a first slot and a second slot extending along the length direction of the front cross beam and being U-shaped.
[0011] In combination with the first aspect and the above-mentioned implementation methods, in some implementation methods of the first aspect, it also includes a front end first longitudinal beam and a front end second longitudinal beam, the front end bottom of the front end of the first longitudinal beam and the front end of the second longitudinal beam is provided with a supporting portion extending forward, the front ends of the first longitudinal beam and the front end of the second longitudinal beam are defined by the supporting portion to form an L-shaped assembly groove, the front end first mounting bracket is assembled in the assembly groove of the front end first longitudinal beam and welded to the front end first longitudinal beam, and the front end second mounting bracket is assembled in the assembly groove of the front end second longitudinal beam and welded to the front end second longitudinal beam.
[0012] In combination with the first aspect and the above-mentioned implementation methods, in some implementation methods of the first aspect, the rear end of the front end first longitudinal beam is installed on the middle first vehicle body support bracket, and the rear end of the front end second longitudinal beam is installed on the middle second vehicle body support bracket, and the rear ends of the front end first longitudinal beam and the front end second longitudinal beam are sunken compared to the front end, and the rear ends and front ends of the front end first longitudinal beam and the front end second longitudinal beam are connected by an inclined extension section, and collapse holes are opened on the surfaces of both ends of the inclined extension section.
[0013] In combination with the first aspect and the above-mentioned implementation methods, in some implementation methods of the first aspect, the intermediate first body support bracket is provided with a first intermediate body mounting bracket extending upward, and the intermediate second body support bracket is provided with a second intermediate body mounting bracket extending upward, and the intermediate first body support bracket, the intermediate second body support bracket, the first intermediate body mounting bracket, and the second intermediate body mounting bracket are all made of aluminum alloy and are provided with reinforcing ribs inside.
[0014] In combination with the first aspect and the above-mentioned implementations, in some implementations of the first aspect, the intermediate first body support bracket and the intermediate second body support bracket are connected through a rear cross beam support bracket, the first end of the rear cross beam support bracket is provided with a rear first body support bracket, and the second end of the rear cross beam support bracket is provided with a rear second body support bracket.
[0015] In a second aspect, a vehicle comprises the subframe structure described in any embodiment of the first aspect.
[0016] One of the above technical solutions has at least one of the following advantages or beneficial effects: In the technical solution of the utility model, the first end of the front crossbeam is embedded in the first slot of the front first mounting bracket and welded thereto, and the second end of the front crossbeam is embedded in the second slot of the front second mounting bracket and welded thereto, and a wrap-around fit is formed through the slot, thereby increasing the contact area, improving the welding strength and the connection rigidity. At the same time, the front first body mounting bracket and the front suspension first mounting bracket adopt an integrated design, and the front second body mounting bracket and the front suspension second mounting bracket adopt an integrated design, which effectively improves the overall strength of the structures of the front first mounting bracket and the front second mounting bracket. The utility model optimizes the structure of the weak position of the subframe performance, which can not only improve the performance, but also ensure that the cost does not increase, and effectively ensure that the designed subframe has the feasibility of mass production. The subframe of this structure undergoes rigidity simulation analysis, and the analysis results are significantly higher than the benchmark target, and through actual vehicle verification, the handling stability performance evaluation exceeds similar competing products.
[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0019] Figure 1 It is a schematic structural diagram of an embodiment of the auxiliary frame structure of the utility model;
[0020] Figure 2 yes Figure 1A front view of the structure of an embodiment shown;
[0021] Figure 3 yes Figure 1 A side view of the structure of an embodiment shown;
[0022] Figure 4 yes Figure 1 A top view of the structure of an embodiment shown;
[0023] Figure 5 yes Figure 1 A bottom view of the structure of an embodiment is shown. DETAILED DESCRIPTION
[0024] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.
[0025] In the present invention, if directions (up, down, left, right, front and back) are described, it is only for the convenience of describing the technical solution of the present invention, and does not indicate or imply that the technical features referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.
[0026] In the present utility model, "several" means one or more, "multiple" means more than two, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself. In the description of the present utility model, if there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0027] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected or electrically connected or able to communicate with each other; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.
[0028] in, Figure 1 , Figure 3 and Figure 5The reference direction coordinate system of the embodiment of the utility model is given below. Figure 1 , Figure 3 and Figure 5 The embodiment of the utility model is described with reference to the direction shown.
[0029] See also Figure 1 , Figure 2 The embodiment of the utility model provides a sub-frame structure, including a front first mounting bracket 100, a front second mounting bracket 200 and a front cross beam 300, the front first mounting bracket 100 and the front second mounting bracket 200 are arranged at both ends of the front cross beam 300, the front first mounting bracket 100 includes a front first body mounting bracket 101 and a front suspension first mounting bracket 102, the front first body mounting bracket 101 is used to connect the front part of the sub-frame with the body, and the front suspension first mounting bracket 102 can be used for the installation of the motor assembly on the sub-frame, the front first body mounting bracket 101 and the front suspension first mounting bracket 102 are made of aluminum alloy in one piece, the front second mounting bracket 200 is arranged in a mirror image with the front first mounting bracket 100, and the front second mounting bracket 200 includes The front second body mounting bracket 201 and the front suspension second mounting bracket 202 are included. The front second body mounting bracket 201 is used to connect the front part of the subframe with the body, and the front suspension second mounting bracket 202 can be used for installing the motor assembly on the subframe. The front second body mounting bracket 201 and the front suspension second mounting bracket 202 are made of aluminum alloy in one piece. The front first mounting bracket 100 is provided with a first slot 103 extending along the length direction of the front cross beam 300, and the front second mounting bracket 200 is provided with a second slot 203 extending along the length direction of the front cross beam 300. The first end of the front cross beam 300 is embedded in the first slot 103 and welded to the front first mounting bracket 100, and the second end of the front cross beam 300 is embedded in the second slot 203 and welded to the front second mounting bracket 200.
[0030] Combination Figure 1 , Figure 2In the technical solution of the utility model, the first end of the front cross beam 300 is embedded in the first slot 103 of the front first mounting bracket 100 and welded thereto, and the second end of the front cross beam 300 is embedded in the second slot 203 of the front second mounting bracket 200 and welded thereto, and a wrap-around fit is formed through the slot, which increases the contact area, improves the welding strength and connection rigidity. At the same time, the front first body mounting bracket 101 and the front suspension first mounting bracket 102 adopt an integrated design, and the front second body mounting bracket 201 and the front suspension second mounting bracket 202 adopt an integrated design, which effectively improves the overall strength of the front first mounting bracket 100 and the front second mounting bracket 200. The utility model optimizes the structure of the weak position of the subframe performance, which can not only improve the performance, but also ensure that the cost does not increase, and effectively ensure that the designed subframe has mass production feasibility. The subframe of this structure undergoes rigidity simulation analysis, and the analysis results are significantly higher than the benchmark target, and through actual vehicle verification, the handling stability performance evaluation exceeds similar competing products.
[0031] In some embodiments, see Figure 1 , Figure 2 The front end first vehicle body mounting bracket 101 is located on the side of the front suspension first mounting bracket 102 away from the front end second mounting bracket 200, the front end first vehicle body mounting bracket 101 extends obliquely upward of the front end first mounting bracket 100, and the front suspension first mounting bracket 102 extends upward of the front end first mounting bracket 100. A connecting rib 104 is provided between the front end first vehicle body mounting bracket 101 and the front suspension first mounting bracket 102, which further effectively improves the lateral rigidity of the mounting position.
[0032] In some embodiments, see Figure 1 , Figure 2 The front second body mounting bracket 201 is located on the side of the front suspension second mounting bracket 202 away from the front first mounting bracket 100, the front second body mounting bracket 201 extends obliquely upward of the front second mounting bracket 200, and the front suspension second mounting bracket 202 extends upward of the front second mounting bracket 200. A connecting rib 204 is provided between the front second body mounting bracket 201 and the front suspension second mounting bracket 202, which further effectively improves the lateral rigidity of the mounting position.
[0033] Further, in some embodiments, see Figure 1 , Figure 2 The front suspension first mounting bracket 102 and the front suspension second mounting bracket 202 both include a first support plate and a second support plate, a U-shaped groove space is formed between the first support plate and the second support plate, and transverse reinforcing ribs 105 and 205 are arranged inside the U-shaped groove space, which further effectively improves the transverse rigidity of the installation position.
[0034] In some embodiments, see Figure 1 , Figure 2 The front first mounting bracket 100 and the front second mounting bracket 200 both include a front cross beam connection portion, which includes a top wall plate, a side wall plate, and a bottom wall plate, which define a first slot 103 and a second slot 203 extending along the length direction of the front cross beam 300 and forming a U shape. The first slot 103 and the second slot 203 in the U shape effectively wrap the first end and the second end of the front cross beam 300, increase the contact area, and improve the welding strength and connection rigidity.
[0035] In some embodiments, see Figure 1 , Figure 2 , Figure 5 The subframe structure further includes a front first longitudinal beam 401 and a front second longitudinal beam 402. The front ends of the front first longitudinal beam 401 and the front second longitudinal beam 402 are provided with a supporting portion 403 extending forward. The front ends of the front first longitudinal beam 401 and the front second longitudinal beam 402 define an L-shaped assembly groove through the supporting portion 403. The front first mounting bracket 100 is mounted in the assembly groove of the front first longitudinal beam 401 and welded to the front first longitudinal beam 401. The front second mounting bracket 200 is mounted in the assembly groove of the front second longitudinal beam 402 and welded to the front second longitudinal beam 402. The front ends of the front first longitudinal beam 401 and the front second longitudinal beam 402 are surrounded by an L-shaped structure and connected by welding. The L-shaped assembly groove can increase the contact area, improve the welding strength between the front body mounting bracket and the front longitudinal beam, and thus improve the connection rigidity.
[0036] For further information, see Figure 3 The rear end of the front first longitudinal beam 401 is installed on the middle first vehicle body support bracket 501, and the rear end of the front second longitudinal beam 402 is installed on the middle second vehicle body support bracket 502. The rear ends of the front first longitudinal beam 401 and the front second longitudinal beam 402 are sunken compared to the front end. The rear ends and front ends of the front first longitudinal beam 401 and the front second longitudinal beam 402 are connected by an inclined extension section, and the surfaces of the two ends of the inclined extension section are provided with collapse holes. The rear ends of the front first longitudinal beam 401 and the front second longitudinal beam 402 are sunken compared to the front end and are approximately S-shaped. This shape refers to the bending trajectory of the longitudinal beam to improve the collision bending effect, and the surface is provided with collapse holes, the purpose is to facilitate bending at the collapse hole position, the installation center of gravity of the motor assembly is just at the rear end of the front longitudinal beam, and the bending of the front longitudinal beam can drive the motor assembly to fall, ensuring the safety of the vehicle cab.
[0037] In some embodiments, see Figure 1 , Figure 2 , Figure 4The first intermediate body support bracket 501 is provided with a first intermediate body mounting bracket 503 extending upward, the second intermediate body support bracket 502 is provided with a second intermediate body mounting bracket 504 extending upward, the first intermediate body mounting bracket 503 and the first intermediate body mounting bracket 503 are used to connect with the vehicle body, the first intermediate body support bracket 501, the second intermediate body support bracket 502, the first intermediate body mounting bracket 503, and the second intermediate body mounting bracket 504 are all made of aluminum alloy and have reinforcing ribs inside. Other places are hollowed out, and relying on the reasonable layout of the reinforcing ribs, the connection rigidity of the bracket can be improved, and the weight can also be significantly reduced.
[0038] For further information, see Figure 1 , Figure 4 , Figure 5 The first intermediate body support bracket 501 and the second intermediate body support bracket 502 are connected via the rear cross beam support bracket 600. The length of the welding position between the first intermediate body support bracket 501, the second intermediate body support bracket 502 and the rear cross beam support bracket 600 is relatively long, in order to increase the contact area, improve the welding strength and the connection rigidity. The first end of the rear cross beam support bracket 600 is provided with the rear first body support bracket 601, and the second end of the rear cross beam support bracket 600 is provided with the rear second body support bracket 602. The rear first body support bracket 601 and the rear second body support bracket 602 are used to be connected to the vehicle body.
[0039] In addition, the rear cross beam support bracket 600 is provided with a steering gear mounting bracket 603, a rear suspension mounting bracket 604, etc. The steering gear mounting bracket 603 and the rear suspension mounting bracket are provided with multiple reinforcing ribs to improve the rigidity of the bracket itself, and at the same time, the redundant parts are hollowed out to significantly reduce the weight; the height of the parts on the upper surface of the bracket is relatively low, which can also avoid interference with surrounding installation parts, simplify the structure and reduce costs.
[0040] An embodiment of the utility model further provides a vehicle, comprising the subframe structure in any one of the above embodiments.
[0041] In the description of this specification, the description with reference to the terms "example", "embodiment" or "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0042] Of course, the invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.
Claims
1. A subframe structure, characterized in that: It includes a front-end first mounting bracket, a front-end second mounting bracket and a front cross beam, the front-end first mounting bracket includes a front-end first body mounting bracket and a front suspension first mounting bracket, the front-end first body mounting bracket and the front suspension first mounting bracket are made of aluminum alloy in one piece, the front-end second mounting bracket includes a front-end second body mounting bracket and a front suspension second mounting bracket, the front-end second body mounting bracket and the front suspension second mounting bracket are made of aluminum alloy in one piece, the front-end first mounting bracket is provided with a first slot extending along the length direction of the front cross beam, the front-end second mounting bracket is provided with a second slot extending along the length direction of the front cross beam, the first end of the front cross beam is embedded in the first slot and welded to the front-end first mounting bracket, and the second end of the front cross beam is embedded in the second slot and welded to the front-end second mounting bracket.
2. The subframe structure according to claim 1, characterized in that: The front end first vehicle body mounting bracket is located on a side of the front suspension first mounting bracket away from the front end second mounting bracket, the front end first vehicle body mounting bracket extends obliquely upward of the front end first mounting bracket, the front suspension first mounting bracket extends upward of the front end first mounting bracket, and a connecting rib is provided between the front end first vehicle body mounting bracket and the front suspension first mounting bracket.
3. The subframe structure according to claim 1, characterized in that: The front second vehicle body mounting bracket is located on a side of the front suspension second mounting bracket away from the front first mounting bracket, the front second vehicle body mounting bracket extends obliquely upward of the front second mounting bracket, the front suspension second mounting bracket extends upward of the front second mounting bracket, and a connecting rib is provided between the front second vehicle body mounting bracket and the front suspension second mounting bracket.
4. The subframe structure according to claim 1, characterized in that: The front suspension first mounting bracket and the front suspension second mounting bracket both include a first support plate and a second support plate, a U-shaped groove space is formed between the first support plate and the second support plate, and a transverse reinforcing rib is provided inside the U-shaped groove space.
5. The subframe structure according to claim 1, characterized in that: The front end first mounting bracket and the front end second mounting bracket both include a front cross beam connecting portion, and the front cross beam connecting portion has a top wall plate, a side wall plate and a bottom wall plate, and the top wall plate, the side wall plate and the bottom wall plate define a first slot and a second slot extending along the length direction of the front cross beam and being U-shaped.
6. The subframe structure according to claim 1, characterized in that: It also includes a front end first longitudinal beam and a front end second longitudinal beam, the front end bottom of the first longitudinal beam and the front end second longitudinal beam is provided with a supporting portion extending forward, the front ends of the first longitudinal beam and the front end second longitudinal beam define an L-shaped assembly groove through the supporting portion, the front end first mounting bracket is assembled in the assembly groove of the front end first longitudinal beam and welded to the front end first longitudinal beam, and the front end second mounting bracket is assembled in the assembly groove of the front end second longitudinal beam and welded to the front end second longitudinal beam.
7. The subframe structure according to claim 6, characterized in that: The rear end of the front first longitudinal beam is installed on the middle first vehicle body support bracket, and the rear end of the front second longitudinal beam is installed on the middle second vehicle body support bracket. The rear ends of the front first longitudinal beam and the front second longitudinal beam are sunken compared with the front ends. The rear ends and front ends of the front first longitudinal beam and the front second longitudinal beam are connected by an inclined extension section, and collapse holes are opened on the surfaces of both ends of the inclined extension section.
8. The subframe structure according to claim 7, characterized in that: The first intermediate body support bracket is provided with a first intermediate body mounting bracket extending upward, and the second intermediate body support bracket is provided with a second intermediate body mounting bracket extending upward. The first intermediate body support bracket, the second intermediate body support bracket, the first intermediate body mounting bracket, and the second intermediate body mounting bracket are all made of aluminum alloy and are provided with reinforcing ribs inside.
9. The subframe structure according to claim 7, characterized in that: The middle first vehicle body support bracket and the middle second vehicle body support bracket are connected via a rear cross beam support bracket, a rear first vehicle body support bracket is provided at a first end of the rear cross beam support bracket, and a rear second vehicle body support bracket is provided at a second end of the rear cross beam support bracket.
10. A vehicle, characterized in that: The invention comprises the subframe structure according to any one of claims 1 to 9.