Mounting bracket for improving the dynamic stiffness of the subframe suspension attachment of hydrogen vehicles

Abstract

The present invention provides a mounting bracket for improving the dynamic stiffness of the suspension attachment point of a hydrogen-powered automobile subframe, and relates to the technical field of hydrogen-powered automobile accessories; the mounting bracket for improving the dynamic stiffness of the suspension attachment point of the hydrogen-powered automobile subframe comprises a crossbeam and two suspension connection brackets; the crossbeam is used to be installed on the upper surface of a subframe assembly provided with an open-matching suspension bracket; one end of the two suspension connection brackets is respectively installed on the upper surface of the crossbeam, and the other end is respectively connected to the upper end of the open-matching suspension bracket; the crossbeam cooperates with the two suspension connection brackets to fix the upper end of the open-matching suspension bracket, thereby improving the dynamic stiffness of the suspension attachment point of the hydrogen-powered automobile subframe, thereby ensuring the whole vehicle handling performance and suspension vibration isolation performance of the hydrogen-powered automobile.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen energy automobile accessories, and in particular to a mounting bracket for improving the dynamic stiffness of a hydrogen energy automobile subframe suspension attachment point. Background Art

[0002] In fuel cell hydrogen vehicles, the powertrain needs to be installed on the subframe through a suspension system. Since the center of mass layout principle has the characteristics of compact structure, good load-bearing capacity, and simple assembly process; during the installation of the powertrain of fuel cell hydrogen vehicles, this layout is often used to arrange and install the electric powertrain. After adopting this layout, the powertrain and the subframe are connected through a suspension mechanism, which supports, isolates, and limits the powertrain.

[0003] The subframe suspension attachment point refers to the center point of the bushing of the suspension support or bracket on the subframe. The dynamic stiffness value of the subframe suspension attachment point has an important impact on the vehicle's handling, suspension vibration isolation and other performances; therefore, in the development of subframe products, the dynamic stiffness of the subframe suspension attachment point must meet certain design requirements.

[0004] The existing suspension mechanism based on the centroidal arrangement principle usually only uses a suspension bracket to suspend the powertrain of a fuel cell hydrogen-powered vehicle. Since the suspension bracket is mostly an open-fitting suspension bracket, the subframe suspension attachment point is a cantilever structure. This structure causes the dynamic stiffness of the subframe suspension attachment point of the hydrogen-powered vehicle to be poor, which directly affects the vehicle's handling and suspension vibration isolation performance. Summary of the invention

[0005] The invention aims to solve the technical problem that the sub-frame suspension attachment point of the existing fuel cell hydrogen energy vehicle has poor dynamic stiffness.

[0006] An embodiment of the present invention provides a mounting bracket for improving the dynamic stiffness of the suspension attachment point of a hydrogen-powered automobile subframe, comprising a crossbeam and two suspension connection brackets;

[0007] The crossbeam is used to be mounted on the upper surface of a subframe assembly provided with an open-fitting suspension bracket;

[0008] One end of the two suspension connection brackets is respectively installed on the upper surface of the crossbeam, and the other end is respectively connected to the upper end of the open matching suspension bracket;

[0009] The crossbeam cooperates with the two suspension connection brackets to fix the upper end of the open-matching suspension bracket.

[0010] In some preferred embodiments, the mounting bracket for improving the dynamic stiffness of the hydrogen-powered vehicle subframe suspension attachment point also includes a vertical beam; one end of the vertical beam is connected to the lower surface of the cross beam, and the other end is used to be mounted on the side of the subframe assembly.

[0011] In some more preferred embodiments, the upper ends of the vertical beams are welded to the horizontal beams.

[0012] In some preferred embodiments, the suspension connecting bracket is "L"-shaped; the suspension connecting bracket includes a first connecting portion and a second connecting portion; the first connecting portion and the second connecting portion are integrally formed; the first connecting portion is installed on the upper surface of the beam; the second connecting portion is used to connect to the upper end of the open-fitting suspension bracket.

[0013] In some more preferred embodiments, the first connecting portion is detachably mounted on the upper surface of the beam by bolts.

[0014] In some preferred embodiments, the mounting bracket for improving the dynamic stiffness of the subframe suspension attachment of the hydrogen-powered automobile further comprises a mass block; the mass block is mounted on a side of the crossbeam away from the open-fit bracket.

[0015] In some more preferred embodiments, the mass block is detachably mounted on the side of the beam by bolts.

[0016] In some more preferred embodiments, the number of the mass blocks is one or more than two.

[0017] In some preferred embodiments, the vertical beam is also provided with wiring harness mounting bolts.

[0018] In some more preferred embodiments, the harness mounting bolts are riveted to the vertical beams.

[0019] The technical solution provided by the embodiment of the present invention has the following beneficial effects: a mounting bracket for improving the dynamic stiffness of the suspension attachment point of a hydrogen-powered automobile subframe comprises a crossbeam and two suspension connection brackets; the crossbeam is used to be installed on the upper surface of a subframe assembly provided with an open-fitting suspension bracket; one end of the two suspension connection brackets are respectively installed on the upper surface of the crossbeam, and the other end is respectively connected to the upper end of the open-fitting suspension bracket; the crossbeam cooperates with the two suspension connection brackets to fix the upper end of the open-fitting suspension bracket, thereby improving the dynamic stiffness of the suspension attachment point of the hydrogen-powered automobile subframe, thereby ensuring the vehicle handling performance and suspension vibration isolation performance of the hydrogen-powered automobile. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a schematic diagram of the structure of a mounting bracket for improving the dynamic stiffness of the subframe suspension attachment point of a hydrogen-powered vehicle in a certain embodiment of the present invention.

[0021] Figure 2 yes Figure 1 A schematic diagram of the structure of a suspension connection bracket 5 in a mounting bracket for improving the suspension attachment point stiffness of a subframe of a hydrogen-powered vehicle.

[0022] Figure 3 yes Figure 1 Schematic diagram of the structure of the mass block 4 in the mounting bracket for improving the point dynamic stiffness of the subframe suspension attachment of the hydrogen-powered vehicle.

[0023] Figure 4 yes Figure 1 Reference diagram of the use status of the mounting bracket used to improve the dynamic stiffness of the subframe suspension attachment point of a hydrogen vehicle.

[0024] Figure 5 yes Figure 1 Another reference diagram of the use state of the mounting bracket used to improve the dynamic stiffness of the subframe suspension attachment point of the hydrogen-powered vehicle.

[0025] Among them, 1. subframe assembly; 2. open-fit suspension bracket; 3. vertical beam; 301. wiring harness mounting bolt; 302. first mounting hole; 4. mass block; 401. second mounting hole; 5. suspension connecting bracket; 501. second connecting part; 502. third mounting hole; 503. first connecting part; 504. fourth mounting hole; 6. cross beam; 601. fifth mounting hole; 602. sixth mounting hole; 7. suspension support. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0027] Please refer to Figure 1 , 4 5 , an embodiment of the present invention provides a mounting bracket for improving the dynamic stiffness of the suspension attachment point of a hydrogen-powered automobile subframe, comprising a crossbeam 6 , a vertical beam 3 and two suspension connection brackets 5 .

[0028] The crossbeam 6 is used to be installed on the upper surface of the subframe assembly 1 provided with an open-fit suspension bracket 2; the fifth mounting hole 601 and the sixth mounting hole 602 are respectively provided at both ends of the crossbeam 6; the crossbeam 6 is fixed to the subframe assembly 1 through the fifth mounting hole 601, the sixth mounting hole 602 and bolts; the crossbeam 6 is installed on the upper surface of the subframe assembly 1 close to the side of the open-fit suspension bracket 2; the lower end of the open-fit suspension bracket 2 is fixed to the main body of the subframe assembly 1; the open-fit suspension bracket 2 is used to install the suspension support 7; the suspension support 7 is used to install the powertrain of the hydrogen energy vehicle.

[0029] The upper end of the vertical beam 3 is welded to the lower surface of the cross beam 6, and the lower end of the vertical beam 3 is used to be installed on the side of the sub-frame assembly 1; the lower end of the vertical beam 3 is provided with a first mounting hole 302; the lower end of the vertical beam 3 is installed on the side of the sub-frame assembly 1 through the first mounting hole 302 and bolts.

[0030] One end of the two suspension connection brackets 5 is respectively installed on the upper surface of the cross beam 6 , and the other end is respectively connected to the upper end of the open-fitting suspension bracket 2 .

[0031] By cooperating with the crossbeam 6 and the two suspension connecting brackets 5, the upper end of the open-fitting suspension bracket 2 is fixed, thereby achieving the fixation of the upper and lower ends of the open-fitting suspension bracket 2, thereby improving the dynamic stiffness of the suspension attachment point of the hydrogen-powered vehicle subframe, thereby ensuring the vehicle handling performance and suspension vibration isolation performance of the hydrogen-powered vehicle.

[0032] Specifically, refer to Figure 2 The suspension connecting bracket 5 is in an "L" shape; the suspension connecting bracket 5 includes a first connecting portion 503 and a second connecting portion 501; the first connecting portion 503 and the second connecting portion 501 are integrally formed; the first connecting portion 503 is installed on the upper surface of the beam 6; the second connecting portion 501 is used to connect with the upper end of the open-fitting suspension bracket 2; a fourth mounting hole 504 is provided on the first connecting portion 503; a third mounting hole 502 is provided on the second connecting portion 501; the first connecting portion 503 is detachably mounted on the upper surface of the beam 6 through the fourth mounting hole 504 and bolts; the second connecting portion 501 is mounted on the upper end of the open-fitting suspension bracket 2 through the third mounting hole 502 and bolts.

[0033] Further, refer to Figure 1 and 3 In order to further improve the dynamic stiffness of the hydrogen-powered automobile subframe suspension attachment point, a mass block 4 is also installed on the crossbeam 6; the mass block 4 is installed on the side of the crossbeam 6 away from the open-fitting suspension bracket 2; a second mounting hole 401 is provided on the mass block 4; the mass block 4 is detachably mounted on the side of the crossbeam 6 through the second mounting hole 401 and bolts.

[0034] In this embodiment, the number of the mass block 4 is one.

[0035] As a variation of this embodiment, the number of mass blocks 4 may be more than two; illustratively, the number of mass blocks 4 may be two, three, four or five.

[0036] Further, refer to Figure 1 In order to facilitate the installation of the wiring harness, a wiring harness installation bolt 301 is also provided on the vertical beam 3; the wiring harness installation bolt 301 is riveted to the vertical beam 3.

[0037] refer to Figure 4 and 5 The method of using the mounting bracket for improving the dynamic stiffness of the subframe suspension attachment point of the hydrogen-powered vehicle in this embodiment is as follows:

[0038] The cross beam 6 is installed on the upper surface of the sub-frame assembly 1 close to the side of the open-fitting suspension bracket 2 through the fifth mounting hole 601 and the sixth mounting hole 602 and bolts; the vertical beam 3 is fixed to the side of the sub-frame assembly 1 through the first mounting hole 302 and bolts; finally, the two suspension connecting brackets 5 are fixed to the upper end of the open-fitting suspension bracket 2 through the second connecting part 501 respectively, so as to fix the upper end of the open-fitting suspension bracket 2.

[0039] In this document, the directional words such as front, back, top, and bottom are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application.

[0040] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

[0041] 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 principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A mounting bracket for improving the dynamic stiffness of the subframe suspension attachment of a hydrogen-powered vehicle, characterized in that: It includes a crossbeam and two suspension connection brackets; The crossbeam is used to be mounted on the upper surface of a subframe assembly provided with an open-fitting suspension bracket; One end of the two suspension connection brackets is respectively installed on the upper surface of the crossbeam, and the other end is respectively connected to the upper end of the open matching suspension bracket; The crossbeam cooperates with the two suspension connection brackets to fix the upper end of the open-matching suspension bracket; It also includes a vertical beam; one end of the vertical beam is connected to the lower surface of the cross beam, and the other end is used to be installed on the side of the subframe assembly; The upper end of the vertical beam is welded to the horizontal beam; The suspension connection bracket is in an "L" shape; the suspension connection bracket includes a first connection portion and a second connection portion; the first connection portion and the second connection portion are integrally formed; the first connection portion is mounted on the upper surface of the crossbeam; the second connection portion is used to connect to the upper end of the open-fitting suspension bracket; The first connecting portion is detachably mounted on the upper surface of the beam by bolts; It also includes a mass block; the mass block is installed on a side of the beam away from the open-fitting suspension bracket.

2. The mounting bracket for improving the dynamic stiffness of the subframe suspension attachment of a hydrogen-powered vehicle according to claim 1, characterized in that: The mass block is detachably mounted on the side of the crossbeam by bolts.

3. The mounting bracket for improving the dynamic stiffness of the subframe suspension attachment of a hydrogen-powered vehicle as claimed in claim 1, characterized in that: The number of the mass block is at least one.

4. The mounting bracket for improving the dynamic stiffness of the subframe suspension attachment of a hydrogen-powered vehicle as claimed in claim 1, characterized in that: The vertical beam is also provided with a wiring harness mounting bolt.

5. The mounting bracket for improving the dynamic stiffness of the subframe suspension attachment of a hydrogen-powered vehicle as claimed in claim 4, characterized in that: The wiring harness mounting bolts are riveted to the vertical beams.

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