WO2025076984A1 - Link mounting bracket and subframe assembly - Google Patents

Abstract

A link mounting bracket and a subframe assembly. The link mounting bracket is used for mounting a five-link mechanism on a subframe, and comprises a first bracket, which is configured to be mounted at a front end of a longitudinal beam of the subframe, wherein the first bracket comprises a bracket body and a reinforcing plate, the reinforcing plate having two included-angle edges, the bracket body being connected to one included-angle edge of the reinforcing plate, and the other included-angle edge of the reinforcing plate being configured to connect to the longitudinal beam of the subframe.

Description

Connecting rod mounting bracket and subframe assembly

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese patent application No. 2023226785544 filed on October 8, 2023, the entire contents of which are incorporated herein by reference.

Technical Field

The present invention belongs to the technical field of automobile suspension, and in particular relates to a connecting rod mounting bracket and a subframe assembly.

Background Art

As a key component in the suspension system, the subframe is used to connect the wheel side components through the control arm, transmit force and motion to the vehicle body, isolate vibration and noise, improve ride comfort, and increase the local stiffness of the vehicle body. Common subframes generally adopt a frame structure, which is made of a front crossbeam, a rear crossbeam, and left and right longitudinal tube beams overlapped and welded; the five-link mechanism is installed on the subframe through a mounting bracket. During the use of the vehicle, the subframe is subjected to a large load, resulting in a large working stress on the crossbeam and longitudinal beam. The strength of the mounting bracket and the collision performance of the subframe need to be optimized.

Summary of the invention

In order to solve the technical problem that the strength of the current mounting bracket and the collision performance of the subframe need to be optimized, the present disclosure provides a connecting rod mounting bracket and a subframe assembly.

A first aspect of the present disclosure provides a connecting rod mounting bracket for mounting a five-bar linkage on a subframe, the connecting rod mounting bracket comprising a first bracket for mounting on a front end of a longitudinal beam of the subframe; the first bracket comprising a bracket body and a reinforcing plate, the reinforcing plate having two angled edges, the bracket body being connected to one of the angled edges of the reinforcing plate, and the other angled edge of the reinforcing plate being used to connect to the longitudinal beam of the subframe.

A second aspect of the present disclosure provides a subframe assembly, comprising: a subframe and the above-mentioned connecting rod mounting bracket mounted on the subframe.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a schematic structural diagram of a subframe assembly and a connecting rod mounting bracket according to one or more embodiments of the present disclosure.

FIG. 2 shows a schematic structural diagram of the subframe assembly of FIG. 1 .

FIG. 3 shows a schematic structural diagram of the subframe assembly of FIG. 1 at a certain viewing angle.

FIG. 4 shows a schematic structural diagram of the subframe assembly of FIG. 1 from another viewing angle.

Description of reference numerals:
100. Connecting rod mounting bracket; 101. First bracket; 1011. Bracket body; 1012. Reinforcement plate; 102. Second bracket; 103. Third bracket; 104. Fourth bracket; 105. Fifth bracket; 110. Subframe assembly; 111. Left longitudinal beam; 112. Right longitudinal beam; 113. Front cross beam; 114. Rear cross beam; 1141. First connecting plate; 1142. Second connecting plate; 115. Avoidance depression; 116. Process hole; 117. Avoidance groove.

DETAILED DESCRIPTION

In order to make the technical personnel in the technical field to which the present disclosure belongs more clearly understand the present disclosure, the technical scheme in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present disclosure.

FIG. 1 shows a structural diagram of a subframe assembly and a connecting rod mounting bracket according to one or more embodiments of the present disclosure. Intention, FIG. 2 shows a schematic structural diagram of the sub-frame assembly of FIG. 1 , FIG. 3 shows a schematic structural diagram of the sub-frame assembly of FIG. 1 at a certain viewing angle, and FIG. 4 shows a schematic structural diagram of the sub-frame assembly of FIG. 1 at another viewing angle. As shown in FIGS. 1 to 4 , according to the first aspect of the present disclosure, a connecting rod mounting bracket is provided. The connecting rod mounting bracket 100 is used to mount a five-link mechanism on a sub-frame. The connecting rod mounting bracket 100 includes a first bracket 101 for mounting on the front end of the longitudinal beam of the sub-frame; the first bracket 101 includes a bracket body 1011 and a reinforcing plate 1012. The reinforcing plate 1012 has two angled edges. The bracket body 1011 is connected to one of the angled edges of the reinforcing plate 1012, and the other angled edge of the reinforcing plate 1012 is used to connect the longitudinal beam of the sub-frame. The structural rigidity of the first connecting rod mounting bracket 100 is improved. The design of the arc-shaped extension surface in the reinforcing plate 1012 can enhance the ability of the longitudinal beam of the sub-frame to resist collision deformation, thereby improving the safety performance of the whole vehicle.

As shown in Figures 1 and 2, in some embodiments, the first bracket 101 is located on one side of the longitudinal beam of the subframe, and is used to be connected to one of the links of the five-bar linkage. The subframe has two longitudinal beams, and both longitudinal beams are provided with link mounting brackets, that is, two sets of link mounting brackets are used to respectively install the corresponding two sets of five-bar linkages on the two longitudinal beams of the subframe.

As shown in FIG. 1 and FIG. 2 , in order to reduce the weight of parts while satisfying the ability of the longitudinal beam to resist collision deformation, in some embodiments, the reinforcing plate 1012 may be fan-shaped, with an arcuate edge, the arcuate edge of the reinforcing plate 1012 is connected to the ends of the two angled edges, and the arcuate edge of the reinforcing plate 1012 extends from the front end of the longitudinal beam of the subframe toward the first bracket 101. One of the two angled edges is connected to the longitudinal beam, and the arcuate edge of the reinforcing plate 1012 extends from the front end of the longitudinal beam of the subframe toward the first bracket 101. During a collision, the force may extend along the extension direction of the arcuate edge of the reinforcing plate 1012, thereby saving materials while satisfying the ability of the longitudinal beam to resist collision deformation.

As shown in Figures 1 and 2, in some embodiments, the fan-shaped reinforcement plate 1012 is a structure that is wide in the front and narrow in the back, and the wide front part is the arc-shaped edge of the fan-shaped reinforcement plate 1012. The arc-shaped edge of the fan-shaped reinforcement plate 1012 has one end connected to the longitudinal beam, and the other end of the arc-shaped edge extends to connect with the bracket body 1011, which can improve the utilization rate of materials and reduce the weight of parts while meeting the connection with the longitudinal beam and the bracket body 1011, thereby reducing costs to a certain extent.

As shown in Fig. 1 and Fig. 2, in order to further improve the safety performance of the whole vehicle, in some embodiments, the reinforcing plate 1012 can be parallel to the plane where the subframe is located. In this case, an angled side of the fan-shaped reinforcing plate 1012 is 180° to the plane where the subframe is located; in other embodiments, an angled side of the fan-shaped reinforcing plate 1012 can also be 170°-190° to the plane where the subframe is located, specifically 170°, 172°, 75°, 177° or 180°, within this range, the reinforcing plate 1012 is parallel to the plane where the subframe is located.

As shown in FIG. 1 and FIG. 2 , in some embodiments, the first bracket 101 may be U-shaped, and one of the side walls of the first bracket 101 is connected to an angled edge of the reinforcing plate 1012. The U-shaped structure of the first bracket 101 includes two vertical plates and a horizontal plate connected to both vertical plates, wherein one of the vertical plates is connected to an angled edge of the fan-shaped reinforcing plate 1012, and the horizontal plate is located on a side away from the reinforcing plate 1012.

As shown in FIG. 1 and FIG. 2 , in some embodiments, the U-shaped reinforcing plate 1012 may be an integral structure formed by stamping.

As shown in Figures 1 and 2, in order to further enhance the ability of the subframe longitudinal beam to resist collision deformation and further improve the safety performance of the entire vehicle, in some embodiments, the extension length of the arc-shaped edge of the reinforcing plate 1012 can be 1 to 2 times the width of the first bracket 101. When the extension length of the arc-shaped edge of the reinforcing plate 1012 is 1 to 2 times the width of the first bracket 101, in the state of collision deformation, the arc-shaped edge of the fan-shaped reinforcing plate 1012 can buffer a part of the force. Since the left longitudinal beam 111 and the right longitudinal beam 112 are both provided with fan-shaped reinforcing plates 1012, an angled edge of the fan-shaped reinforcing plate 1012 is connected to the longitudinal beam, so that the ability of the longitudinal beam to resist collision deformation can be enhanced, thereby improving the safety performance of the entire vehicle.

As shown in FIG. 1 and FIG. 2 , in some embodiments, the extension length of the arc-shaped edge of the reinforcing plate 1012 may be 1.5 times the width of the first bracket 101 .

As shown in FIG. 1 and FIG. 2 , in order to further improve the strength of the first bracket 101, in some embodiments, the reinforcing plate 1012 is welded and fixed to the first bracket 101. That is, one angle side of the fan-shaped reinforcing plate 1012 is welded and fixed to the first bracket 101. When the first bracket 101 is a U-shaped structure, that is, the first bracket 101 includes two vertical plates and a horizontal plate connected to both vertical plates, at this time, one angle side of the fan-shaped reinforcing plate 1012 is connected to the vertical plate close to the reinforcing plate 1012. Specifically, welding can be used. When one angle side of the fan-shaped reinforcing plate 1012 is welded to a vertical plate of the first bracket 101, the other angle side of the fan-shaped reinforcing plate 1012 is welded to the longitudinal beam to form a whole. By welding the reinforcing plate 1012 to the first bracket 101 and the longitudinal beam to form a whole, the structural rigidity and strength performance of the first bracket 101 are improved.

As shown in Figures 1 and 2, in some embodiments, the connecting rod mounting bracket 100 may also include a second bracket 102, a third bracket 103, a fourth bracket 104 and a fifth bracket 105, wherein the five-link mechanism is respectively connected to the corresponding first bracket 101, the second bracket 102, the third bracket 103, the fourth bracket 104 and the fifth bracket 105, the first bracket 101 is installed at the front part of the longitudinal beam of the sub-frame, the second bracket 102 is installed at the middle part of the longitudinal beam of the sub-frame; the third bracket 103 is installed at the rear end of the longitudinal beam of the sub-frame; the fourth bracket 104 is installed at the rear cross beam 114 of the sub-frame; the fifth bracket 105 is installed at the rear cross beam 114 of the sub-frame.

As shown in FIG. 1 and FIG. 2 , in some embodiments, the first bracket 101 , the second bracket 102 and the third bracket 103 may be connected to the longitudinal beam by welding, and the fourth bracket 104 and the fifth bracket 105 may be connected to the rear cross beam 114 by welding.

As shown in FIG. 1 and FIG. 2 , in some embodiments, the fourth bracket 104 may be located at an axial end of a rear cross beam 114 of the sub-frame; and the fifth bracket 105 may be located on a side of the cross beam of the sub-frame.

As shown in Figures 1 and 2, in some embodiments, the rear cross beam 114 can be spliced by a first connecting plate 1141 and a second connecting plate 1142, both of which are bent plates, and the bent parts of the first connecting plate 1141 and the second connecting plate 1142 are relatively arranged. After the first connecting plate 1141 and the second connecting plate 1142 are spliced, they enclose a chamber, which can be welded to the first connecting plate 1141 and the second connecting bent part in some embodiments.

As shown in Figures 1 and 2, in some embodiments, the end of the first connecting plate 1141 and the end of the second connecting plate 1142 are spaced apart from the longitudinal beam, and the portion where the end of the first connecting plate 1141 and the end of the second connecting plate 1142 are spaced apart form a fourth bracket 104.

As shown in Fig. 1 and Fig. 2, in some embodiments, a portion of the fifth bracket 105 is connected to the second connecting plate 1142 of the rear cross beam 114, and another portion is connected to the longitudinal beam. The fifth bracket 105 may include three mounting plates, which are connected in pairs to form a chamber, wherein two mounting plates are connected to the second connecting plate 1142 of the rear cross beam 114, and another mounting plate is connected to the longitudinal beam, and in some embodiments, the connection may be made by welding.

As shown in FIG3 and FIG4, according to the second aspect of the present disclosure, a subframe assembly 110 is provided, comprising: a subframe and the above-mentioned connecting rod mounting bracket 100 mounted on the subframe. In some embodiments, the connecting rod mounting bracket 100 may include a first bracket 101, a second bracket 102, a third bracket 103, a fourth bracket 104 and a fifth bracket 105, wherein the five-link mechanism is respectively connected to the corresponding first bracket 101, the second bracket 102, the third bracket 103, the fourth bracket 104 and the fifth bracket 105, the first bracket 101 is mounted on the front part of the longitudinal beam of the subframe, the second bracket 102 is mounted on the middle part of the longitudinal beam of the subframe; the third bracket 103 is mounted on the rear end of the longitudinal beam of the subframe; the fourth bracket 104 is mounted on the rear cross beam 114 of the subframe; the fifth bracket 105 is mounted on the rear cross beam 114 of the subframe.

As shown in FIG. 3 and FIG. 4 , in some embodiments, the subframe may include a left longitudinal beam 111, a right longitudinal beam 112, a front cross beam 113 and a rear cross beam 114, and the left longitudinal beam 111, the right longitudinal beam 112, the front cross beam 113 and the rear cross beam 114 form a frame structure; and the frame structure is integrally processed and formed.

As shown in FIGS. 3 and 4 , in some embodiments, the subframe may include a left longitudinal beam 111, a right longitudinal beam 112, a front cross beam 113 and a rear cross beam 114, and the left longitudinal beam 111, the right longitudinal beam 112, the front cross beam 113 and the rear cross beam 114 form a frame structure; the left longitudinal beam 111 and the right longitudinal beam 112 are symmetrically arranged at intervals, and the left longitudinal beam 111 and the right longitudinal beam 112 have the same structure, and the frame structure is integrally processed and formed;

As shown in FIG. 3 and FIG. 4 , in some embodiments, the left longitudinal beam 111, the right longitudinal beam 112 and the front cross beam 113 may be pipe fittings, and the rear cross beam 114 may be formed by splicing a first connecting plate 1141 and a second connecting plate 1142, and in some embodiments, the first connecting plate 1141 and the second connecting plate 1142 may be welded. The rear cross beam 114 may be formed by splicing a first connecting plate 1141 and a second connecting plate 1142, and the first connecting plate 1141 and the second connecting plate 1142 are both bent plates, and the bent parts of the first connecting plate 1141 and the second connecting plate 1142 are arranged opposite to each other, and the first connecting plate 1141 and the second connecting plate 1142 are spliced to enclose a chamber.

As shown in FIG3 and FIG4, in some embodiments, the subframe needs to withstand forces and moments in various directions from the road surface and the powertrain during use, and the forces and moments in various directions are transmitted to the subframe through the control arm, and the control arm can be connected to the first bracket 101, the second bracket 102, the third bracket 103, the fourth bracket 104 and the fifth bracket 105 of the subframe by bolts, and the first bracket 101, the second bracket 102, the third bracket 103, the fourth bracket 104 and the fifth bracket 105 can be connected by The first bracket 101, the second bracket 102 and the third bracket 103 are connected to the left longitudinal beam 111 and the right longitudinal beam 112 by welding, and the fourth bracket 104 and the fifth bracket 105 are connected to the rear cross beam 114 by welding.

Therefore, the first bracket 101, the second bracket 102, the third bracket 103, the fourth bracket 104 and the fifth bracket 105 all bear corresponding loads to ensure that the sub-frame is subjected to balanced forces.

As shown in Figures 3 and 4, in some embodiments, the first bracket 101, the second bracket 102 and the third bracket 103 are respectively located at the front, middle and rear end of the longitudinal beam; in some embodiments, the first bracket 101, the second bracket 102 and the third bracket 103 are provided on the left longitudinal beam 111 and the right longitudinal beam 112.

As shown in FIG. 3 and FIG. 4 , in some embodiments, the middle of the left longitudinal beam 111 and the right longitudinal beam 112 are provided with an avoidance recess 115. The second bracket 102 is installed at the middle of the left longitudinal beam 111 and the right longitudinal beam 112, and the avoidance recess 115 can be provided below the connection position of the left longitudinal beam 111 and the right longitudinal beam 112 with the corresponding second bracket 102. In this way, the five-bar linkage can be better connected to the corresponding connecting rod mounting bracket 100, the clearance between the five-bar linkage and the connecting rod mounting bracket 100 can be ensured, and the arrangement of related parts can be better realized.

As shown in FIG. 3 and FIG. 4 , in some embodiments, a process hole 116 and an avoidance groove 117 may be provided on the rear cross beam 114 , and the avoidance groove 117 may be used for avoiding the exhaust pipe.

According to one or more embodiments of the present disclosure, a connecting rod mounting bracket and a subframe assembly are provided, which are used to install one of the connecting rods in a five-link mechanism on the subframe, and the connecting rod mounting bracket is used to be installed at the front end of the longitudinal beam of the subframe; the connecting rod mounting bracket includes a bracket body and a reinforcement plate, the reinforcement plate has two angled edges, the bracket body is connected to one of the angled edges of the reinforcement plate, and the other angled edge of the reinforcement plate is used to connect the longitudinal beam of the subframe, thereby improving the structural rigidity of the first connecting rod mounting bracket, and the design of the arc-shaped extension surface in the reinforcement plate can enhance the ability of the longitudinal beam of the subframe to resist collision deformation, thereby improving the safety performance of the entire vehicle.

In the present disclosure, unless otherwise expressly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

In the present disclosure, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

In addition, in the present disclosure, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

Although embodiments of the present disclosure have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the claims and their equivalents.

Claims (10)

A connecting rod mounting bracket, used for mounting a five-bar linkage on a sub-frame, comprises a first bracket for mounting on a front end of a longitudinal beam of the sub-frame; The first bracket includes a bracket body and a reinforcement plate, the reinforcement plate has two angled edges, the bracket body is connected to one of the angled edges of the reinforcement plate, and the other angled edge of the reinforcement plate is used to connect to the longitudinal beam of the subframe. The connecting rod mounting bracket according to claim 1, wherein the reinforcing plate is fan-shaped, the fan-shaped plate has an arc-shaped edge, the arc-shaped edge of the reinforcing plate is connected to the ends of the two angled edges, and the arc-shaped edge of the reinforcing plate extends from the front end of the longitudinal beam of the subframe toward the first bracket; The reinforcing plate is parallel to the plane where the subframe is located. The connecting rod mounting bracket according to claim 1, wherein the first bracket is U-shaped, and one of the side walls of the first bracket is connected to an angled edge of the reinforcing plate. The connecting rod mounting bracket according to any one of claims 1 to 3, wherein the extension length of the arcuate edge of the reinforcing plate is 1 to 2 times the width of the first bracket. The connecting rod mounting bracket according to claim 4, wherein the extension length of the arcuate side of the reinforcing plate is 1.5 times the width of the first bracket. The connecting rod mounting bracket according to any one of claims 1 to 3, wherein the reinforcing plate is fixed to the first bracket by welding. The connecting rod mounting bracket according to any one of claims 1 to 3, further comprising: A second bracket is mounted on the middle part of the longitudinal beam of the subframe; A third bracket is mounted on the rear end of the longitudinal beam of the subframe; a fourth bracket mounted on the rear cross beam of the subframe; and The fifth bracket is mounted on the rear cross beam of the subframe. The connecting rod mounting bracket according to claim 7, wherein the fourth bracket is located at an axial end of the rear cross beam of the sub-frame; and the fifth bracket is located on a side of the sub-frame cross beam. A subframe assembly comprises: a subframe and a connecting rod mounting bracket as claimed in any one of claims 1 to 8 mounted on the subframe. The subframe assembly according to claim 9, wherein the subframe comprises a left longitudinal beam, a right longitudinal beam, a front cross beam and a rear cross beam, and the left longitudinal beam, the right longitudinal beam, the front cross beam and the rear cross beam form a frame structure; and the frame structure is integrally formed; The middle parts of the left longitudinal beam and the right longitudinal beam are both provided with avoidance recesses.