Reinforcing structure for tail section of new energy automobile frame

Abstract

The utility model discloses a new energy automobile frame tail section reinforcing structure which comprises an installation structure used for installing a motor and a first connecting structure connected with a new energy automobile frame body, the installation structure comprises two installation frames which are symmetrically arranged at intervals, the installation frames are fixedly connected with the first connecting structure, and the first connecting structure is fixedly connected with the motor. A first reinforcing structure is arranged on each mounting frame, and a second reinforcing structure is arranged between each mounting frame and the first connecting structure. The structural lightness of the mounting rack is improved by arranging the first reinforcing structure, and the connecting strength of the mounting rack and the first connecting structure is improved by arranging the second reinforcing structure, so that the resonance risk when the tail section of the frame is subjected to external excitation is reduced.

Description

Technical Field

[0001] The utility model relates to the field of automobile manufacturing, in particular to a reinforcement structure of a rear section of a new energy automobile frame. Background Art

[0002] The low-frequency mode of a car refers to the vibration characteristics of its structure in the low-frequency range (such as a few hertz to tens of hertz) when the car is subjected to external excitation.

[0003] In the electric drive system of new energy vehicles, the electric drive system frame structure is usually used to support and fix the motor, battery pack, electronic control unit, etc. When the vehicle is subjected to external excitation (such as uneven road surface, acceleration, deceleration, etc.), if the frequency of the excitation is close to or overlaps with the low-frequency modal frequency of the electric drive system frame structure, it may cause resonance, which will not only cause large vibrations and noise in the vehicle, but may also cause damage to the electric drive system frame structure, thereby damaging the electric drive system. Utility Model Content

[0004] The utility model aims to provide a reinforcement structure for the rear section of a new energy vehicle frame to solve the problems existing in the prior art.

[0005] The utility model is realized through the following technical solutions.

[0006] A reinforcement structure for the rear section of a new energy vehicle frame comprises a mounting structure for mounting a motor and a first connection structure connected to a main body of the new energy vehicle frame, wherein the mounting structure comprises two mounting frames symmetrically arranged at intervals, the mounting frames are fixedly connected to the first connection structure, a first reinforcement structure is arranged on the mounting frames, and a second reinforcement structure is arranged between each of the mounting frames and the first connection structure.

[0007] As a further improvement of the utility model, a mounting plate is provided on the mounting frame, and a fixing hole group for mounting the motor is provided on the mounting plate.

[0008] As a further improvement of the present invention, the mounting frame includes a first connecting beam and a second connecting beam, the first connecting beam and the second connecting beam are connected to a side of the mounting plate away from the motor, and the first connecting beam and the second connecting beam are respectively connected to the top and bottom of the mounting plate.

[0009] As a further improvement of the present invention, the first reinforcement structure includes at least one first reinforcement beam obliquely arranged between the first connecting beam and the second connecting beam.

[0010] As a further improvement of the present invention, the second reinforcement structure includes a plurality of second reinforcement beams, wherein one end of one of the second reinforcement beams is connected to the first connection structure, and the other end is connected to the second connection beam or the first connection beam.

[0011] As a further improvement of the present invention, the first connection structure includes a first part and a second part respectively connected to the two mounting frames, and the first part and the second part are spaced apart to form an escape space.

[0012] As a further improvement of the present invention, a connecting piece is detachably connected between the bottom of the first part and the bottom of the second part.

[0013] As a further improvement of the present invention, one end of the two mounting frames is fixedly connected to the first connecting structure, and the other ends thereof are fixedly connected to a second connecting structure.

[0014] As a further improvement of the present invention, a wire fixing assembly is provided between the mounting frame and the first connecting structure, and a plurality of wire fixing stations are provided on the wire fixing assembly.

[0015] Beneficial effects of the utility model:

[0016] The utility model provides a reinforcement structure for the rear section of a new energy vehicle frame. On the one hand, a first reinforcement structure is arranged on a mounting frame to improve the structural strength of the mounting frame. On the other hand, a second reinforcement structure is arranged between the mounting frame and the first connection structure to improve the connection strength between the mounting frame and the first connection structure, thereby reducing the resonance risk of the rear section of the frame when subjected to external excitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following is a detailed description of the preferred implementation examples of the present invention with reference to the accompanying drawings to help understand the purpose and advantages of the present invention, wherein:

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] In the figure:

[0020] 1. Mounting frame; 11. First connecting beam; 12. Second connecting beam; 13. Mounting plate; 131. Fixing hole group; 2. First connecting structure; 21. First part; 22. Second part; 23. Connector; 3. First reinforcing beam; 4. Second reinforcing beam; 5. Second connecting structure; 6. Wire fixing assembly. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below based on the accompanying drawings and implementation cases.

[0022] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0023] This embodiment provides a reinforcement structure of the rear section of a new energy vehicle frame, referring to Figure 1 , including a mounting structure for mounting a motor and a first connecting structure 2 connected to a vehicle frame body, the mounting structure including two mounting frames 1 spaced apart in parallel and symmetrically arranged, the motor being mounted between the two mounting frames 1, each mounting frame 1 being fixedly connected to the first connecting structure 2, and each mounting frame 1 being provided with a first reinforcing structure, and each mounting frame 1 being provided with a second reinforcing structure between the first connecting structure 2.

[0024] In this reinforcement structure, on the one hand, a first reinforcement structure is provided on the mounting frame 1 to improve the structural strength of the mounting frame 1 itself, increase the rigidity and stability of the mounting frame 1, and thus reduce the damage to the structure of the mounting frame 1 caused by vibration; on the other hand, a second reinforcement structure is provided between the mounting frame 1 and the first connecting structure 2 to improve the connection strength between the mounting frame 1 and the first connecting structure 2, reduce the deformation and looseness of the entire structure during vibration, and reduce the vibration response of the entire structure. In summary, this reinforcement structure helps to reduce the risk of resonance of the rear section of the frame when it is subjected to external excitation.

[0025] Furthermore, the mounting frame 1 includes a mounting plate 13, and two mounting plates 13 are symmetrically arranged. A fixing hole group 131 for fixing the motor is opened on the mounting plate 13. The fixing hole group 131 includes a plurality of mounting holes. When the motor is installed, the plurality of mounting holes can disperse the force, which helps to improve the structural stability, thereby reducing the impact of the mounting frame 1 on the motor when it vibrates.

[0026] Furthermore, the mounting frame 1 is fixedly connected to the side of the mounting plate 13 away from the motor, and the mounting frame 1 includes a first connecting beam 11 and a second connecting beam 12, and the first connecting beam 11 and the second connecting beam 12 are respectively fixedly connected to the top and the bottom of the mounting plate 13, that is, the structural stability of the mounting frame 1 and the mounting plate 13 is improved. At the same time, at least one obliquely arranged first reinforcing beam 3 is provided between the first connecting beam 11 and the second connecting beam 12 to improve the rigidity and structural stability of the mounting frame 1.

[0027] In this embodiment, the first connecting structure 2 includes a first part 21 and a second part 22, which are fixedly connected to two mounting frames 1 respectively. It should be noted that the motor of the new energy vehicle is connected to a transmission shaft to ensure that the power of the motor can be smoothly transmitted, that is, the frame needs to provide an avoidance space for the transmission shaft to ensure the smooth installation of the transmission shaft, that is, the first part 21 and the second part 22 are spaced apart to form an avoidance space for the transmission shaft to pass through.

[0028] Furthermore, in order to improve the structural strength of the first connecting structure 2, a connecting member 23 is detachably connected between the bottom end of the first part 21 and the bottom end of the second part 22. On the one hand, the connecting member 23 can improve the stability of the first connecting structure 2 without interfering with the installation of the drive shaft of the new energy vehicle. On the other hand, the connecting member 23 can be disassembled, which is convenient for maintenance of the drive shaft when the drive shaft fails.

[0029] In this embodiment, the first connecting beam 11 and the second connecting beam 12 are both fixedly connected to the first connecting structure 2. A second reinforcing beam 4 is provided on the second connecting beam 12. One end of the second reinforcing beam 4 is fixedly connected to the second connecting beam 12, and the other end is connected to the first connecting structure 2. The second reinforcing beam 4 can disperse the stress borne by the second reinforcing beam 12 and the first connecting structure 2, thereby improving the connection stability between the two.

[0030] At the same time, a wire fixing component 6 is also provided on the mounting frame. The wire fixing component 6 is provided on the first connecting beam 11 and is fixedly connected to the first connecting structure. A plurality of wire fixing stations are provided on the wire fixing component 6 to meet the requirements of fixing the wire harness of the rear section of the frame and reduce the influence of the frame vibration on the wire harness. Preferably, the wire fixing station is provided as a wire fixing hole, and the wire harness can be fixed on the wire fixing component 6 through the wire fixing hole to achieve the fixing of the wire harness.

[0031] In this embodiment, one end of the two mounting frames is fixedly connected to the first connection structure, and the other ends are fixedly connected to the second connection structure 5, which helps to improve the structural strength of the mounting structure.

[0032] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the above implementation cases, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above implementation cases, or replace some of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the implementation cases of the utility model.

Claims

1. A reinforcement structure for the rear section of a new energy vehicle frame. It is characterized in that The invention comprises a mounting structure for mounting a motor and a first connecting structure (2) connected to a vehicle frame body, the mounting structure comprising two mounting frames (1) arranged symmetrically at intervals, the mounting frames (1) being fixedly connected to the first connecting structure (2), the mounting frames (1) being provided with a first reinforcing structure, and a second reinforcing structure being provided between each of the mounting frames (1) and the first connecting structure (2).

2. A reinforcement structure for the rear section of a new energy vehicle frame according to claim 1, It is characterized in that The mounting frame (1) comprises a mounting plate (13), and a fixing hole group (131) for fixing the motor is provided on the mounting plate (13).

3. A reinforcement structure for the rear section of a new energy vehicle frame according to claim 2, It is characterized in that The mounting frame (1) comprises a first connecting beam (11) and a second connecting beam (12), wherein the first connecting beam (11) and the second connecting beam (12) are connected to a side of the mounting plate (13) away from the motor, and the first connecting beam (11) and the second connecting beam (12) are respectively connected to the top and the bottom of the mounting plate (13).

4. A reinforcement structure for the rear section of a new energy vehicle frame according to claim 3, It is characterized in that The first reinforcement structure comprises at least one first reinforcement beam (3) arranged obliquely between the first connection beam (11) and the second connection beam (12).

5. The reinforcement structure of the rear section of a new energy vehicle frame according to claim 3, It is characterized in that The second reinforcement structure comprises a plurality of second reinforcement beams (4), wherein one end of one of the second reinforcement beams (4) is connected to the first connection structure (2), and the other end is connected to the second connection beam (12) or the first connection beam (11).

6. The reinforcement structure of the rear section of a new energy vehicle frame according to claim 1, It is characterized in that The first connection structure (2) comprises a first part (21) and a second part (22) respectively connected to the two mounting frames (1); the first part (21) and the second part (22) are arranged at an interval to form an escape space.

7. A reinforcement structure for the rear section of a new energy vehicle frame according to claim 6, It is characterized in that A connecting piece (23) is detachably connected between the bottom end of the first part (21) and the bottom end of the second part (22).

8. The reinforcement structure of the rear section of a new energy vehicle frame according to claim 1, It is characterized in that One end of the two mounting frames (1) is fixedly connected to the first connection structure (2), and the other ends thereof are fixedly connected to a second connection structure (5).

9. The reinforcement structure of the rear section of a new energy vehicle frame according to claim 1, It is characterized in that A wire fixing component (6) is provided between the mounting frame (1) and the first connecting structure (2), and a plurality of wire fixing stations are provided on the wire fixing component (6).

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