Auxiliary frame structure and vehicle

Abstract

The utility model provides an auxiliary frame structure and a vehicle, the auxiliary frame structure comprises connecting supports arranged at the left end and the right end of an auxiliary frame rear cross beam and a reinforcing piece arranged between the connecting supports at the two ends, and the reinforcing piece extends in the length direction of the auxiliary frame rear cross beam. The connecting support is connected with a rear cross beam of the auxiliary frame, an installation cavity with an opening facing the outer side of the automobile is defined by the connecting support, a connecting part connected with the rear cross arm is arranged on the connecting support, and one end of the rear cross arm is inserted into the installation cavity through the opening and connected with the connecting support through the connecting part. According to the auxiliary frame structure, the connecting supports used for being connected with the rear cross arm are arranged, the reinforcing piece is arranged between the connecting supports at the two ends, the arrangement firmness of the connecting supports can be improved, the auxiliary frame structure has good installation strength and rigidity, meanwhile, the lateral bearing performance of the connecting supports can be improved, and the service life of the auxiliary frame structure is prolonged. The connecting support can be effectively prevented from being damaged due to large lateral force borne by the connecting support, and therefore the four-wheel positioning effect and the driving comfort can be well guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a sub-frame structure. Meanwhile, the utility model also relates to a vehicle provided with the sub-frame structure. Background Art

[0002] The subframe is a connecting structure between the wheel side and the vehicle body side. The road load is transmitted from the wheel side to the subframe and the vehicle body. Therefore, the strength and stiffness of the subframe affect the durability of the vehicle. Among them, the mounting brackets of each control arm of the subframe are the main load-bearing and transmission units. Ensuring the strength and stiffness of the brackets at each mounting point of the subframe is the key to ensuring the durability of the vehicle. Among them, the mounting structure of the rear cross arm is an important component of the vehicle. Its strength, stiffness and lateral load-bearing performance have an important impact on the deflection angle of the wheel, four-wheel alignment and the driving comfort of the frame. However, the mounting structure of the rear cross arm in the prior art usually has the disadvantage of low lateral load-bearing performance, resulting in poor four-wheel alignment effect and driving comfort of the vehicle. Utility Model Content

[0003] In view of this, the utility model aims to provide a subframe structure to improve the installation firmness and lateral load-bearing performance of the connecting bracket.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A sub-frame structure, comprising connecting brackets arranged at left and right ends of a rear cross beam of the sub-frame, and reinforcing members arranged between the connecting brackets at both ends;

[0006] The connecting bracket is connected to the rear cross beam of the subframe and is constructed to form a mounting cavity with an opening facing the outside of the vehicle. The connecting bracket is provided with a connecting portion connected to the rear cross arm. One end of the rear cross arm is inserted into the mounting cavity through the opening and is connected to the connecting bracket through the connecting portion.

[0007] Furthermore, a line connecting the connecting parts on the connecting brackets at both ends is in the same plane as a center plane in the height direction of the reinforcement.

[0008] Furthermore, the connecting bracket includes a bracket body, and a blocking plate provided at one end of the bracket body;

[0009] The bracket body includes a bottom plate and side plates arranged on two opposite sides of the bottom plate, the side plates on both sides are connected to the rear cross beam of the sub-frame, and the blocking plate is connected to the side plates on both sides and the bottom plate;

[0010] The connecting portion is arranged on the side plate.

[0011] Furthermore, one end of each of the side plates away from the blocking plate is bent toward the outside of the installation cavity.

[0012] Furthermore, the connecting portion includes a connecting hole provided on the side plate, and the connecting hole is a long hole extending in the left-right direction of the vehicle, and the rear cross arm is connected to the connecting bracket through an external connecting piece passing through the connecting hole;

[0013] The long axis of the connecting hole and the center plane of the reinforcement in the height direction are in the same plane.

[0014] Further, the external connecting member includes an eccentric bolt;

[0015] Each of the side plates is provided with a limiting plate, on which a through hole corresponding to the connecting hole is provided, and the limiting plate can abut against the eccentric bolt to limit the rotation of the eccentric bolt.

[0016] Furthermore, the reinforcement member includes a reinforcement plate having a "J"-shaped cross section;

[0017] The reinforcing plate extends along the left-right direction of the vehicle, and the left and right ends of the reinforcing plate are respectively connected to the connecting brackets at the corresponding ends.

[0018] Further, the reinforcement member includes a sealing plate provided at the bottom of the reinforcement plate;

[0019] The sealing plate extends along the length direction of the reinforcing plate and forms a cavity between the sealing plate and the reinforcing plate.

[0020] Furthermore, the left and right ends of the reinforcing plate are respectively provided with extension parts, and the extension parts extend along the width direction of the reinforcing plate and are connected to the connecting bracket.

[0021] Compared with the prior art, the utility model has the following advantages:

[0022] The subframe structure described in the utility model, by arranging a connecting bracket for connecting with the rear cross arm and arranging a reinforcement piece between the connecting brackets at both ends, can not only improve the installation firmness of each connecting bracket, so that it has good installation strength and rigidity, but also can improve the lateral bearing capacity of each connecting bracket, and can effectively avoid the connecting bracket from being damaged due to bearing a large lateral force, thereby can better ensure the four-wheel alignment effect and driving comfort.

[0023] In addition, the connecting line between the connecting parts on the two end connecting brackets is in the same plane as the center plane of the reinforcement in the height direction, which can further improve the lateral bearing capacity of the connecting bracket. The bracket body includes a bottom plate and side plates arranged on two opposite sides of the bottom plate, which can be in the shape of a "J", so that the connecting bracket has better structural strength and rigidity, as well as better load-bearing performance. Bending the end of each side plate away from the blocking plate outward from the installation cavity can not only further improve the strength and rigidity of the connecting bracket, but also avoid the rear cross arm, so that one end of the rear cross arm can enter the installation cavity.

[0024] Secondly, the connecting hole is a long hole, which is convenient for four-wheel alignment adjustment, and the long axis of the connecting hole and the center plane of the height direction of the reinforcement are placed in the same plane, which can further improve the lateral load-bearing performance of the connecting bracket. By setting a limit plate on each side plate, the eccentric bolt can be prevented from rotating, thereby improving the connection firmness between the rear cross arm and the connecting bracket.

[0025] In addition, the reinforcement includes a reinforcement plate with a "J"-shaped cross section. The reinforcement plate can have good strength and bending stiffness, and can provide better lateral support for the connecting bracket, thereby further improving the lateral load-bearing performance of the connecting bracket; at the same time, it can also improve the torsional stiffness and load-bearing performance of the subframe structure as a whole, which is beneficial to improving the driving comfort and safety of the vehicle. By arranging a sealing plate at the bottom of the reinforcement plate, the lateral load-bearing performance of the connecting bracket can be further improved. The left and right ends of the reinforcement plate are respectively provided with extension parts, and the extension parts are connected to the connecting bracket, which can increase the connection length between the reinforcement plate and the connecting bracket, thereby ensuring the connection strength.

[0026] Another object of the present invention is to provide a vehicle, on which the subframe structure as described above is provided.

[0027] The vehicle described in the utility model and the above-mentioned subframe structure have the same beneficial effects as those of the prior art, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0029] Figure 1 It is a schematic diagram of the subframe structure according to an embodiment of the utility model;

[0030] Figure 2 It is a schematic diagram of the subframe structure according to an embodiment of the utility model at another viewing angle;

[0031] Figure 3It is a schematic diagram of the subframe structure according to an embodiment of the utility model at another viewing angle;

[0032] Figure 4 It is a partial structural schematic diagram of the sub-frame structure according to an embodiment of the utility model;

[0033] Figure 5 It is a schematic diagram of the structure between the mounting bracket, the reinforcing plate and the sealing plate according to an embodiment of the utility model;

[0034] Figure 6 for Figure 5 A schematic diagram of the structure shown in another viewing angle;

[0035] Figure 7 for Figure 5 A schematic diagram of the structure shown in another viewing angle;

[0036] Figure 8 This is a schematic diagram of the structure of the mounting bracket according to an embodiment of the utility model;

[0037] Fig. 9 It is a structural schematic diagram of the reinforcement plate described in an embodiment of the utility model.

[0038] Description of reference numerals:

[0039] 1. Sub-frame rear cross beam; 2. Sub-frame front cross beam; 3. Sub-frame longitudinal beam; 4. Reinforcement plate; 5. Rear cross arm; 6. Connecting bracket; 7. Closing plate; 8. Limiting plate; M, center plane;

[0040] 101. rear crossbeam body; 102. mounting bracket;

[0041] 401. Extension;

[0042] 601, bracket body; 6011, side plate; 6012, bottom plate; 602, blocking plate. DETAILED DESCRIPTION

[0043] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0044] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present utility model, it should be noted that the directional words such as "up, down, left, right, front, and back" used in the present embodiment are defined based on the up-down direction, left-right direction, and front-back direction of the automobile. Among them, the up-down direction of the automobile is also the height direction of the automobile (Z direction), the front-back direction of the automobile is also the length direction of the automobile (X direction), and the left-right direction of the automobile is also the width direction of the automobile (Y direction). In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0046] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0047] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0048] This embodiment relates to a sub-frame structure, including connecting brackets 6 arranged at the left and right ends of the rear cross beam 1 of the sub-frame, and reinforcing members arranged between the connecting brackets 6 at both ends, and the reinforcing members extend along the length direction of the rear cross beam 1 of the sub-frame. The connecting bracket 6 is connected to the rear cross beam 1 of the sub-frame, and is surrounded to form a mounting cavity with an opening facing the side outside the vehicle. The connecting bracket 6 is provided with a connecting portion connected to the rear cross arm 5, and one end of the rear cross arm 5 is inserted into the mounting cavity through the opening and is connected to the connecting bracket 6 through the connecting portion.

[0049] The subframe structure of this embodiment, by providing a connecting bracket 6 for connecting to the rear cross arm 5 and providing a reinforcement member between the connecting brackets 6 at both ends, can not only improve the installation firmness of each connecting bracket 6, so that it has better installation strength and rigidity, but also can improve the lateral bearing capacity of each connecting bracket 6, and can effectively avoid the connecting bracket 6 from being damaged due to bearing a large lateral force, thereby better ensuring the four-wheel alignment effect and driving comfort.

[0050] Based on the above overall structure, an exemplary structure of the subframe structure of this embodiment is referred to as Figures 1 to 3 As shown in the figure, it includes a sub-vehicle front cross beam 2 extending in the left-right direction of the whole vehicle, a sub-frame rear cross beam 1, and a sub-frame longitudinal beam 3 connected between the left and right ends of the sub-frame front cross beam and the sub-frame rear cross beam 1. The connecting bracket 6 of this embodiment is arranged on the sub-frame rear cross beam 1, and here, the structure of the sub-frame rear cross beam 1 is mainly introduced, and the structures of the sub-frame front cross beam and the sub-frame longitudinal beam 3 can refer to the prior art.

[0051] Combination Figure 1 and Figure 2 As shown in the figure, the rear cross beam 1 of the subframe of the present embodiment includes a rear cross beam body 101, and mounting brackets 102 arranged at the left and right ends of the rear cross beam body 101, and the mounting bracket 102 is used to set an air spring between the rear cross arm 5. At the same time, a mounting hole is arranged on the mounting bracket 102, and the mounting bracket 102 is connected to the connecting frame connected to the vehicle body through the mounting hole. The mounting bracket 102 is generally triangular in shape as a whole, so that it has good structural strength and is also convenient for setting the air spring.

[0052] In addition, in order to facilitate connection with the rear cross beam body 101, the mounting bracket 102 includes an upper plate and a lower plate that are buckled and connected, and a cavity with one end open is formed between the upper plate and the lower plate. The rear cross beam body 101 is connected to the open end of the mounting bracket 102, thereby the interior of the rear cross beam body 101 and the cavity of the mounting bracket 102 can be connected to each other, which can improve the structural strength and rigidity of the rear cross beam 1 of the subframe.

[0053] Since the rear cross arm 5 is a two-force rod structure, the lateral force it receives is much greater than the longitudinal force, that is, the force received along the left-right direction of the vehicle is much greater than the force received along the up-down direction of the vehicle. Therefore, in this embodiment, in order to further improve the lateral bearing performance of the connecting bracket 6, as a further implementation method, the connecting line between the connecting parts on the connecting brackets 6 at both ends is in the same plane as the center plane M in the height direction of the reinforcement. Such an arrangement can further improve the lateral bearing capacity of the connecting bracket 6.

[0054] Combination Figures 4 to 7 As shown in FIG. 1 , as a preferred embodiment, the connecting bracket 6 of this embodiment includes a bracket body 601 and a blocking plate 602 disposed at one end of the bracket body 601. Figure 8 As shown in the figure, the bracket body 601 includes a bottom plate 6012 and side plates 6011 arranged on two opposite sides of the bottom plate 6012. The side plates 6011 on both sides are connected to the rear cross beam 1 of the sub-frame. The blocking plate 602 is connected to the side plates 6011 and the bottom plate 6012 on both sides, and is specifically connected by welding. The bracket body 601 adopts this structure, which can make it in the shape of a "J", so that the connecting bracket 6 has better structural strength and rigidity, as well as better load-bearing performance.

[0055] Moreover, the top of the side panels 6011 and the top of the blocking plate 602 are welded to the mounting bracket 102, and the connecting portion is specifically provided on the side panels 6011. In addition, in order to facilitate the connection of the blocking plate 602 with the mounting bracket 102 of the side panels 6011, as shown in FIG. Figure 6 As shown in , the top of the blocking plate 602 is provided with a flange folded toward the side of the side plate 6011, and the bottom of the blocking plate 602 is convexly arranged relative to the side plate 6011.

[0056] Combine 5 and Figure 8 As shown in , in order to obtain a better use effect, as a further implementation method, one end of each side plate 6011 away from the blocking plate 602 is bent outward from the installation cavity. This design can not only further improve the strength and rigidity of the connecting bracket 6, but also avoid the rear cross arm 5, so that one end of the rear cross arm 5 can enter the installation cavity. Figure 8 As shown in , as a preferred embodiment, the connection portion includes a connection hole provided on the side plate 6011, and the connection hole is a long hole extending in the left-right direction of the vehicle, and the rear cross arm 5 is connected to the connection bracket 6 through an external connection member passing through the connection hole. Among them, the long axis of the connection hole and the center plane M in the height direction of the reinforcement are in the same plane, thereby further improving the lateral load-bearing performance of the connection bracket 6.

[0057] The external connecting member of this embodiment includes an eccentric bolt. To this end, as a further embodiment, each side plate 6011 is provided with a limit plate 8, and a through hole corresponding to the connection hole is provided on the limit plate 8, and the limit plate 8 can abut against the eccentric bolt to limit the rotation of the eccentric bolt. By providing the limit plate 8 on each side plate 6011, the eccentric bolt can be prevented from rotating, thereby improving the connection firmness between the rear cross arm 5 and the connection bracket 6. Of course, in addition to the eccentric bolt, the external connecting member of this embodiment can further include other connecting members.

[0058] Combination Figure 6 and Fig. 9 As shown in , as a preferred embodiment, the reinforcement member includes a reinforcement plate 4 with a "J"-shaped cross section, and the left and right ends of the reinforcement plate 4 are respectively connected to the connecting bracket 6 at the corresponding ends. The reinforcement plate 4 adopts this structure, which can have better strength and bending rigidity, and can improve the lateral support effect of the connecting bracket 6, thereby further improving the lateral load-bearing performance of the connecting bracket 6. At the same time, it can also improve the torsional rigidity and load-bearing performance of the subframe structure as a whole, which is conducive to improving the driving comfort and safety of the vehicle.

[0059] As a further embodiment, Figure 7 As shown in FIG. 1 , a sealing plate 7 is provided at the bottom of the reinforcing plate 4. The sealing plate 7 extends along the length direction of the reinforcing plate 4 and is welded to the reinforcing plate 4, and a cavity is formed between the two. In this embodiment, by providing the sealing plate 7 at the bottom of the reinforcing plate 4, the lateral bearing performance of the connecting bracket 6 can be further improved. In addition, in order to facilitate the lightweight design of the entire vehicle, as shown in FIG. Figure 7 In the embodiment, a plurality of weight-reducing holes are provided on the sealing plate 7 and spaced apart along the length direction thereof.

[0060] In this embodiment, as a further implementation method, Figure 6As shown in the figure, the left and right ends of the reinforcing plate 4 are respectively provided with extension parts 401, which extend along the width direction of the reinforcing plate 4 and are connected to the connecting bracket 6. By connecting the extension part 401 to the connecting bracket 6, the connection length between the reinforcing plate 4 and the connecting bracket 6 can be increased, thereby ensuring the connection strength. In addition, in a specific implementation, the reinforcing plate 4 and the connecting bracket 6 can be connected by welding, and the length of the extension part 401, and also the welding length between the extension part 401 and the connecting bracket 6, is not less than 15 mm to ensure good welding quality.

[0061] The subframe structure of the present embodiment, by adopting the above structure, can effectively improve the lateral load-bearing performance and stiffness performance of the connecting bracket 6, avoid the problem of weld opening and cracking of the connecting bracket 6 due to the poor lateral load-bearing capacity of the connecting bracket 6, and at the same time, can further improve the torsional stiffness of the subframe as a whole, and improve the driving comfort and safety of the whole vehicle to a certain extent.

[0062] In addition, the present embodiment also relates to a vehicle, on which the above subframe structure is provided.

[0063] The vehicle of this embodiment has the same beneficial effects as the above-mentioned subframe structure relative to the prior art, which will not be described in detail here.

[0064] 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, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A subframe structure, characterized in that: It comprises connecting brackets (6) arranged at the left and right ends of the rear cross beam (1) of the sub-frame, and reinforcing members arranged between the connecting brackets (6) at the two ends, wherein the reinforcing members extend along the length direction of the rear cross beam (1) of the sub-frame; The connecting bracket (6) is connected to the rear cross beam (1) of the subframe and is constructed to form a mounting cavity with an opening facing the outside of the vehicle. The connecting bracket (6) is provided with a connecting portion connected to the rear cross arm (5). One end of the rear cross arm (5) is inserted into the mounting cavity through the opening and is connected to the connecting bracket (6) via the connecting portion.

2. The subframe structure according to claim 1, characterized in that: The connecting line between the connecting parts on the connecting brackets (6) at both ends is in the same plane as the center plane (M) in the height direction of the reinforcement.

3. The subframe structure according to claim 1, characterized in that: The connecting bracket (6) comprises a bracket body (601) and a blocking plate (602) arranged at one end of the bracket body (601); The support body (601) comprises a bottom plate (6012) and side plates (6011) arranged on two opposite sides of the bottom plate (6012), the side plates (6011) on both sides are connected to the rear cross beam (1) of the sub-frame, and the blocking plate (602) is connected to the side plates (6011) on both sides and the bottom plate (6012); The connecting portion is arranged on the side plate (6011).

4. The subframe structure according to claim 3, characterized in that: One end of each of the side plates (6011) away from the blocking plate (602) is bent toward the outside of the installation cavity.

5. The subframe structure according to claim 3, characterized in that: The connecting portion comprises a connecting hole provided on the side plate (6011), and the connecting hole is a long hole extending in the left-right direction of the vehicle, and the rear cross arm (5) is connected to the connecting bracket (6) via an external connecting piece passing through the connecting hole; The long axis of the connecting hole and the center plane (M) of the reinforcement in the height direction are in the same plane.

6. The subframe structure according to claim 5, characterized in that: The external connecting member comprises an eccentric bolt; A limiting plate (8) is provided on each of the side plates (6011), and a through hole corresponding to the connecting hole is provided on the limiting plate (8), and the limiting plate (8) can abut against the eccentric bolt to limit the rotation of the eccentric bolt.

7. The subframe structure according to any one of claims 1 to 6, characterized in that: The reinforcing member comprises a reinforcing plate (4) having a "J"-shaped cross section, and the left and right ends of the reinforcing plate (4) are respectively connected to the connecting brackets (6) at the corresponding ends.

8. The subframe structure according to claim 7, characterized in that: A sealing plate (7) is provided at the bottom of the reinforcing plate (4); The sealing plate (7) extends along the length direction of the reinforcing plate (4), and a cavity is formed between the sealing plate (7) and the reinforcing plate (4).

9. The subframe structure according to claim 7, characterized in that: The left and right ends of the reinforcing plate (4) are respectively provided with extension parts (401), and the extension parts (401) extend along the width direction of the reinforcing plate (4) and are connected to the connecting bracket (6).

10. A vehicle, characterized in that: The vehicle is provided with the subframe structure according to any one of claims 1 to 9.

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