Connecting structure for cross beam and dash panel of main instrument panel

Abstract

The utility model discloses a connecting structure of a main instrument panel cross beam and a dash panel, the main instrument panel cross beam and the dash panel are connected with a mounting bracket, a brake pedal is arranged below the main instrument panel cross beam, and the brake pedal is connected with the mounting bracket. Resonance abnormal sound is reduced, and the riding comfort of passengers is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles. Specifically, the utility model relates to a connection structure between a main instrument panel crossbeam and a front panel. Background Art

[0002] With the continuous innovation of automobile technology, the ride comfort performance of vehicles has attracted more and more attention from passengers, which has greatly attracted the attention and investment of major automobile manufacturers in the ride comfort performance of vehicles. In particular, abnormal noise, as an index that is easily perceived by customers and causes complaints, should be taken more seriously.

[0003] At present, the main instrument panel crossbeam and the front panel are directly connected by brackets, and the structural design is unreasonable. The modal of the main instrument is low and the stiffness is weak. When the vehicle is driving under poor road conditions, the main frequency of the road excitation transmitted to the vehicle frame resonates, which easily causes abnormal noise of the main instrument body due to resonance, greatly affecting the ride comfort of customers.

[0004] The utility model patent with the publication number of CN212125309U disclosed a name of an instrument panel crossbeam assembly and a vehicle on December 11, 2020. The instrument panel crossbeam assembly includes a crossbeam main body, a left side panel connection unit, a right side panel connection unit, a sub-instrument panel connection unit, a middle channel connection unit, and a steering column connection unit; the crossbeam main body includes a left pipe beam and a right pipe beam connected by plugging; one end of the sub-instrument panel connection unit is fixedly connected to the middle of the crossbeam main body, and the other end extends downward and backward from the crossbeam main body, and a sub-instrument panel connection portion for connecting with the sub-instrument panel is constructed on the sub-instrument panel connection unit. This instrument panel crossbeam assembly also cannot solve the above technical problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a connection structure between a main instrument panel crossbeam and a front panel that reduces resonance abnormal noise and improves the ride comfort of passengers in view of the deficiencies of the prior art.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] For the connection structure between the main instrument panel crossbeam and the front panel, an installation bracket is connected between the main instrument panel crossbeam and the front panel. A brake pedal is provided below the main instrument panel crossbeam, and the brake pedal is connected to the installation bracket.

[0008] A connection bracket is provided on the main instrument panel crossbeam. One side of the installation bracket is fixedly connected with a side plate, and a first installation bolt is provided on the side plate; a connection surface is provided at the bottom end of the installation bracket, and second installation bolts are evenly distributed on the connection surface.

[0009] The top of the mounting bracket is provided with a connecting plate, the connecting plate is of a bent structure, one end of the connecting plate is fixedly connected to the mounting bracket, and the other end is bolted to the connecting bracket.

[0010] An extended flange is provided at the edge of the connecting surface.

[0011] A weight-reducing hole is provided in the middle of the connecting surface, and the second mounting bolt is located around the weight-reducing hole.

[0012] Fastening screws are provided at both ends of the main instrument panel crossbeam assembly.

[0013] The main instrument panel crossbeam assembly includes a crossbeam main body, and the crossbeam main body is of a round tube structure.

[0014] The technical effect of the present utility model is as follows: By adopting the connection structure of the main instrument panel crossbeam and the front bulkhead of the present utility model, through the setting of the mounting bracket, one connecting bracket from the main instrument to the front bulkhead is reduced, the connection from the main instrument to the front bulkhead is realized, the installation requirement of the brake pedal is also met, the constraint mode of the main instrument panel crossbeam is effectively improved, the problem of resonance abnormal noise of the main instrument caused by the low mode of the main instrument is solved, the riding comfort of customers is improved, the number of brackets is reduced, the assembly space is saved, and at the same time, the design concept of cost reduction and weight reduction is achieved. Description of the Drawings

[0015] This specification includes the following drawings, and the shown contents are respectively:

[0016] Figure 1 It is a top view of the connection structure of the main instrument panel crossbeam and the front bulkhead of the present utility model;

[0017] Figure 2 It is a side view of the connection structure of the main instrument panel crossbeam and the front bulkhead of the present utility model;

[0018] Figure 3 It is a side view of the connection between the brake pedal and the mounting bracket of the present utility model;

[0019] Figure 4 It is a front view of the connection between the brake pedal and the mounting bracket of the present utility model.

[0020] The markings in the figure are: 1, main instrument panel crossbeam; 2, front bulkhead; 3, mounting bracket; 4, brake pedal; 5, connecting bracket; 6, side plate; 7, connecting plate; 8, first mounting bolt; 9, second mounting bolt; 10, connecting surface; 11, weight-reducing hole; 12, fastening screw; 13, extended flange; 14, crossbeam main body. Detailed Description of the Invention

[0021] The following will further describe the specific implementation manners of the present utility model in detail with reference to the accompanying drawings through the description of the embodiments, aiming to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concept and technical solutions of the present invention, and contribute to its implementation.

[0022] As Figures 1 to 4 shown, for the connection structure between the main instrument panel crossbeam and the front bulkhead, an installation bracket 3 is connected between the main instrument panel crossbeam and the front bulkhead. A brake pedal 4 is provided below the main instrument panel crossbeam 1, and the brake pedal 4 is connected to the installation bracket 3.

[0023] The main instrument panel crossbeam 1 and the front bulkhead 2 are connected by adding an installation bracket 3, which not only meets the installation of the brake pedal 4, but also reduces a bracket connecting the main instrument panel crossbeam and the front bulkhead at the same time, improving the constrained mode of the main instrument panel crossbeam 1 and solving the problem of resonance abnormal noise caused by the low modal of the main instrument panel body. The top end of the brake pedal 4 is hinged inside the open end of the installation bracket 3, which does not affect the rotation of the brake pedal 4. By using the installation bracket 3, the brake pedal 4 and the installation bracket 3 can be pre-formed into an assembly structure for synchronous installation. In terms of assembly, the number of component assemblies is reduced, the assembly times are reduced to improve the assembly efficiency. Since the number of brackets is reduced, it is beneficial to reduce costs and the overall weight. Compared with the direct connection method of using brackets between the main instrument panel crossbeam 1 and the front bulkhead 2, the connection method using the installation bracket 3 reduces the resonance transmission path, and the abnormal noise is more easily absorbed during the transmission process, making the abnormal noise transmitted to the main instrument panel crossbeam 1 or the instrument panel lower. Calculated by borrowing CAE means, the constrained mode of the main instrument panel crossbeam 1 is increased by about 5 Hz.

[0024] As Figure 2 shown, a connection bracket 5 is provided on the main instrument panel crossbeam 1. One side of the installation bracket 3 is fixedly connected with a side plate 6, and a first installation bolt 8 is provided on the side plate 6; the bottom end of the installation bracket 3 is provided with a connection surface 10, and second installation bolts 9 are evenly distributed on the connection surface 10. The main instrument panel crossbeam 1 and the installation bracket 3 are connected by the first installation bolt 8, and the installation bracket 3 and the front bulkhead 2 are connected by the second installation bolt 9. According to this design, on the premise of ensuring that the constrained mode of the main instrument panel crossbeam 1 does not decrease, a connection bracket from the main instrument panel crossbeam 1 to the front bulkhead 2 can be saved. The main instrument panel crossbeam 1 and the side part of the installation bracket 3 can be connected by the first installation bolt 8, and the end part of the installation bracket 3 and the front bulkhead 2 can be connected by the second installation bolt 9, improving the stability of the installation bracket 3 and also making the main instrument panel crossbeam 1 and the front bulkhead 2 form a detachable connection form, facilitating the disassembly and maintenance of subsequent components and improving the assembly efficiency. The connection end of the first installation bolt 8 is located outside the installation bracket 3, and the second installation bolt 9 is located inside the open end of the installation bracket 3, and there is no space obstacle for the connection operation, and the assembly difficulty is low.

[0025] As Figure 3As shown in the figure, a connecting plate 7 is provided at the top of the mounting bracket 3. The connecting plate 7 is of a bent structure. One end of the connecting plate 7 is fixedly connected to the mounting bracket 3, and the other end is bolted to the connecting bracket 5. The connecting plate 7 connects the top of the mounting bracket 3 to the connecting bracket 5, thereby forming multi-point and different-direction connections with the main instrument panel crossbeam 1, improving the connection firmness. The bent treatment of the connecting plate 7 facilitates the planar connection with the connecting bracket 5.

[0026] As Figure 4 shown in the figure, an extended flange 13 is provided at the edge of the connecting surface 10. The extended flange 13 expands the contact area between the mounting bracket 3 and the front panel 2, further improving the stability of the mounting bracket 3 and reducing the extrusion deformation of the mounting bracket 3 on the front panel 2.

[0027] As Figure 4 shown in the figure, a weight-reducing hole 11 is provided in the middle of the connecting surface 10. The second mounting bolt 9 is located around the weight-reducing hole 11. The weight-reducing hole 11 further reduces the weight of the mounting bracket 3 and at the same time avoids the setting of the mounting bolts.

[0028] As Figure 1 shown in the figure, fastening screws 12 are provided at both ends of the main instrument panel crossbeam 1 assembly. There are multiple fastening screws 12, which stably fix the main instrument panel crossbeam 1 on the vehicle body, ensuring the stable connection between each bracket structure on the main instrument panel crossbeam 1 and the corresponding components.

[0029] As Figure 1 and Figure 2 shown in the figure, the main instrument panel crossbeam 1 assembly includes a crossbeam main body 14, and the crossbeam main body 14 is of a circular tube structure. The circular tube structure has reliable performance, which is beneficial to improving the stiffness of the main instrument panel crossbeam 1, can absorb and consume vibration energy faster, thereby reducing the resonance abnormal sound effect. The circular tube structure is simple and can also greatly reduce costs.

[0030] For the connection structure between the main instrument panel crossbeam and the front panel, through the setting of the mounting bracket 3, one connecting bracket from the main instrument to the front panel 2 is reduced, the connection between the main instrument and the front panel 2 is realized, and the installation requirement of the brake pedal 4 is also met. It effectively improves the constraint mode of the main instrument panel crossbeam 1, solves the problem of main instrument resonance abnormal sound caused by the low mode of the main instrument, improves the customer's riding comfort, reduces the number of brackets, saves the assembly space, and at the same time achieves the design concept of cost reduction and weight reduction.

[0031] The above has made an exemplary description of the present invention in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present invention; or without improvement, the above concept and technical solution of the present invention are directly applied to other occasions, they are all within the protection scope of the present invention.

Claims

1. A connection structure between a main instrument panel crossbeam and a front panel, characterized in that: The main instrument panel crossbeam (1) is connected to the front panel (2) by an installation bracket (3). A brake pedal (4) is provided below the main instrument panel crossbeam (1), and the brake pedal (4) is connected to the installation bracket (3).

2. The connection structure between the main instrument panel crossbeam and the front panel according to claim 1, characterized in that: A connection bracket (5) is provided on the main instrument panel crossbeam (1). One side of the installation bracket (3) is fixedly connected to a side plate (6), and a first installation bolt (8) is provided on the side plate (6); a connection surface (10) is provided at the bottom end of the installation bracket (3), and second installation bolts (9) are evenly distributed on the connection surface (10).

3. The connection structure between the main instrument panel crossbeam and the front panel according to claim 2, characterized in that: A connection plate (7) is provided at the top of the installation bracket (3). The connection plate (7) is of a bent structure. One end of the connection plate (7) is fixedly connected to the installation bracket (3), and the other end is bolted to the connection bracket (5).

4. The connection structure between the main instrument panel crossbeam and the front panel according to claim 3, characterized in that: An extended flange (13) is provided at the edge of the connection surface (10).

5. The connection structure between the main instrument panel crossbeam and the front panel according to claim 4, characterized in that: A weight-reducing hole (11) is provided in the middle of the connection surface (10), and the second installation bolts (9) are located around the weight-reducing hole (11).

6. The connection structure between the main instrument panel crossbeam and the front panel according to any one of claims 1-5, characterized in that: Fastening screws (12) are provided at both ends of the main instrument panel crossbeam (1) assembly.

7. The connection structure between the main instrument panel crossbeam and the front panel according to claim 6, characterized in that: The main instrument panel crossbeam (1) assembly includes a crossbeam main body (14), and the crossbeam main body (14) is of a circular tube structure.

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