Automobile front end structure

Abstract

The invention relates to the technical field of automobile structures, and discloses an automobile front end structure which comprises a front end structure body, the upper surface of the front end structure body is fixedly connected with a left headlamp beam frame assembly, and the upper surface of the front end structure body is fixedly connected with a right headlamp beam frame assembly. A front upper anti-collision beam assembly is fixedly connected to the front surface of the front end structure body, and a front lower anti-collision beam assembly is fixedly connected to the front surface of the front end structure body. Supports are added in a threaded connection mode, the rigidity of installation points is improved, and meanwhile installation of auxiliary frames of other vehicle types on the same platform is not affected; the upper end and the side end of the front end structure are connected through a new support, the side face rigidity is reinforced by adding a side face triangular support, the overall mean value of the dynamic rigidity of a radiator installation point is improved by 60%, and the overall service life of the radiator installation point is prolonged. And the vibration isolation rate of the position is greatly improved, so that the NVH performance is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile structures, in particular to an automobile front end structure. Background Art

[0002] The front end of a car is used in a car to improve safety. In addition, in the event of an accident at low speed, the damage to the car body structure can be kept to a low level by using the front end of the car. For this purpose, the front end of the car is designed as a deformable body and is installed on the car in such a way that when the car hits an obstacle, it can absorb the impact energy generated at least partially through its deformation. The front end of the car thus reduces the impact energy transmitted to the body structure and reduces or prevents its damage. New energy vehicles are booming, and the proportion of production and sales continues to increase; in 2023, my country's automobile production and sales will reach 30.161 million and 30.094 million respectively, an increase of 11.6% and 12% year-on-year, and the production and sales volume have ranked first in the world for 15 consecutive years. Among them, the production and sales of new energy vehicles will reach 9.587 million and 9.495 million respectively, an increase of 35.8% and 37.9% year-on-year, and the market share will reach 31.6%. With the rapid popularization of new energy vehicles, their NVH comfort issues such as noise and vibration are becoming increasingly prominent. Electric vehicles have no engine vibration noise, low background noise, and the NVH vibration phenomenon is particularly prominent, affecting the driving experience and comfort.

[0003] In the car cooling system, the cooling fan is one of the most important parts. Its main function is to reduce the temperature of the engine coolant so that the powertrain can always work within the appropriate temperature range. The car starts at idle speed, the air conditioner is turned on, and the cooling fan is working. The driver often hears a "buzzing" sound that is sometimes loud and sometimes soft, and can also feel a rhythmic vibration on the steering wheel. This phenomenon is called "beat vibration" in professional terms. The beat vibration phenomenon in the idle AC ON condition of the whole vehicle seriously affects the driver's subjective feelings during the use of the vehicle. In addition, the driver will feel physically uncomfortable if he is in this low-frequency beat sound environment for a long time, especially in the hot season in the south. The driver will also experience symptoms such as dizziness, which affects driving safety. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a front-end structure of an automobile. The sheet metal bracket is easy to form, has a simple structure, and is of low cost, so as to achieve low cost and high performance. The bracket is added by screw connection to improve the stiffness of the mounting point while not affecting the subframe installation of other models on the same platform. Only mounting holes for fastening mounting bolts need to be reserved at corresponding positions, so as to greatly reduce the test verification cost and the cost of modifying each model of the platform. The front-end structure connects the upper end with the side end through a new bracket, and the side stiffness is reinforced by adding a side triangular support. The overall average of the radiator installation point stiffness is increased by 60%, which greatly improves the vibration isolation rate of the position. The overall stiffness of the front-end structure is strengthened by adding a connecting bracket and a triangular support on the side, which greatly improves the front-end structural modality while improving the radiator installation point stiffness, effectively reducing the risk of the cooling fan vibration being transmitted to the vehicle body, thereby improving the NVH performance. The overall stiffness of the front-end structure is strengthened by adding a connecting bracket and a triangular support on the side, which greatly improves the front-end structural modality while improving the radiator installation point stiffness, effectively reducing the risk of the cooling fan vibration being transmitted to the vehicle body, and the like.

[0005] (II) Technical solution In order to solve the above technical problems, the present invention provides the following technical solutions: comprising a front end structural body, wherein the upper surface of the front end structural body is fixedly connected with a left headlight cross beam frame assembly, the upper surface of the front end structural body is fixedly connected with a right headlight cross beam frame assembly, the front surface of the front end structural body is fixedly connected with a front upper anti-collision beam assembly, and the front surface of the front end structural body is fixedly connected with a front lower anti-collision beam assembly.

[0006] Through the above technical solution, the front end structure body is assembled with the left headlight cross beam frame assembly and the right headlight cross beam frame assembly, and the left headlight cross beam frame assembly and the right headlight cross beam frame assembly are installed by the first fastening and mounting bolts. Secondly, the front end structure body is assembled with the front upper anti-collision beam and the front longitudinal beam of the vehicle body, and the front upper anti-collision beam can be threadedly connected and installed by the second fastening and mounting bolts. The front end structure body is assembled with the front lower anti-collision beam, and the front lower anti-collision beam is threadedly fixed and connected by the third fastening and mounting bolts. The sheet metal bracket is easy to form, has a simple structure, and is of low cost, achieving low cost and high performance. The bracket is increased by screwing to improve the rigidity of the installation point. , does not affect the subframe installation of other models on the same platform; only the fastening mounting bolt mounting holes need to be reserved at the corresponding positions, which greatly reduces the test verification cost and the cost of modifying each model of the platform. The front-end structure connects the upper end to the side end through a new bracket, and the side stiffness is strengthened by adding side triangular supports. The overall average of the radiator installation point stiffness is increased by 60%, which greatly improves the vibration isolation rate of this position. The overall stiffness of the front-end structure is strengthened by adding connecting brackets and adding triangular supports on the sides, which greatly improves the front-end structural mode while improving the radiator installation point stiffness, effectively reducing the risk of the cooling fan vibration being transmitted to the vehicle body, thereby improving the NVH performance.

[0007] Preferably, the front end of the right headlight cross beam assembly is threadedly connected with a first fastening mounting bolt.

[0008] Through the above technical scheme, the left headlight cross beam frame assembly and the right headlight cross beam frame assembly can be installed by using the first fastening bolt, so that the left headlight cross beam frame assembly and the right headlight cross beam frame assembly are convenient for the later installation and use of the left headlight and the right headlight. The bracket is added by screwing to improve the rigidity of the installation point without affecting the installation of the subframe of other models on the same platform. Only the fastening bolt installation holes need to be reserved at the corresponding positions, which greatly reduces the test verification cost and the cost of modifying each model of the platform.

[0009] Preferably, a second fastening mounting bolt is threadedly connected to the rear surface of the front upper anti-collision beam assembly.

[0010] Through the above technical solution, the front upper anti-collision beam can be threadedly connected and installed on the front end structural body by using the second fastening and mounting bolts, so that the strength of the front end body structure can be increased.

[0011] Preferably, both sides of the front lower anti-collision beam assembly are threadedly connected with third fastening mounting bolts.

[0012] Through the above technical solution, the front lower anti-collision beam can be threadedly fixed in front of the front end structural body by using the third fastening mounting bolt. The front lower anti-collision beam cooperates with the front upper anti-collision beam to improve the overall strength of the front end structural body, thereby increasing the service life of the front end structural body and preventing deformation.

[0013] Preferably, the inner wall of the front end structural body is provided with a left upper bushing for mounting a radiator.

[0014] Through the above technical solution, since the middle of the front end structural body is hollow, the radiator can be installed on the inner wall of the front end body structure, and the upper left corner of the radiator can be snap-fitted and connected using the radiator mounting upper left bushing.

[0015] Preferably, the inner wall of the front end structural body is provided with a left lower bushing for mounting a radiator.

[0016] Through the above technical solution, the lower left corner of the radiator can be snap-fitted and connected by installing the lower left bushing on the radiator, and the left upper bushing on the radiator can be connected to the left side of the radiator.

[0017] Preferably, the inner wall of the front end structural body is provided with a radiator mounting right upper bushing.

[0018] Through the above technical solution, the upper right bushing of the radiator can be used to make a snap connection to the upper right corner of the radiator. Since the installation positions of the upper right bushing of the radiator and the upper left bushing of the radiator are consistent, the stability of the radiator during installation can be ensured.

[0019] Preferably, the inner wall of the front end structural body is provided with a right lower bushing for mounting a radiator.

[0020] Through the above technical solution, the lower right corner of the radiator is embedded into the inside of the lower right bushing of the radiator installation to clamp and fix the lower right corner of the radiator, and the installation of the radiator can be completed by using the lower right bushing of the radiator installation, the upper right bushing of the radiator installation, the lower left bushing of the radiator installation and the upper left bushing of the radiator installation. The overall stiffness of the front-end structure is strengthened by adding connecting brackets and triangular supports on the sides, which greatly improves the front-end structural modal while improving the radiator installation point stiffness, effectively reducing the risk of the cooling fan vibration being transmitted to the vehicle body.

[0021] Preferably, there is a certain distance between the front upper anti-collision beam assembly, the front lower anti-collision beam assembly and the front end structural body.

[0022] Through the above technical scheme, by utilizing the distance between the front upper anti-collision beam assembly, the front lower anti-collision beam assembly and the front end structure body, when the front upper anti-collision beam assembly and the front lower anti-collision beam assembly are hit, it is not easy for the impact force to be directly transmitted to the front end structure body, thereby preventing the front end structure body from being deformed when hit.

[0023] Preferably, the front end structural body connects the upper end with the side end through a new bracket, and the side rigidity is reinforced by adding side triangular supports.

[0024] Through the above technical solution, the overall stiffness of the front-end structure is strengthened by adding connecting brackets and triangular supports on the sides, which greatly improves the front-end structural modal while improving the radiator installation point stiffness, effectively reducing the risk of the cooling fan vibration being transmitted to the vehicle body.

[0025] Compared with the prior art, the present invention provides a front-end structure of an automobile, which has the following beneficial effects: 1. The sheet metal bracket of the present invention is easy to form, has a simple structure, and is of low cost, thus achieving low cost and high performance. By adding the bracket by screw connection, the rigidity of the mounting point is improved, and the subframe installation of other models on the same platform is not affected. Only mounting holes for fastening mounting bolts need to be reserved at corresponding positions, thereby greatly reducing the test verification cost and the cost of modifying each model of the platform.

[0026] 2. The front-end structure of the present invention connects the upper end and the side end through a new bracket, and the side stiffness is reinforced by adding side triangular supports. The overall average of the radiator installation point stiffness is increased by 60%, which greatly improves the vibration isolation rate of this position. The overall stiffness of the front-end structure is strengthened by adding connecting brackets and adding triangular supports on the sides, which greatly improves the front-end structural modal while improving the radiator installation point stiffness, effectively reducing the risk of the cooling fan vibration being transmitted to the vehicle body, thereby improving NVH performance. The overall stiffness of the front-end structure is strengthened by adding connecting brackets and adding triangular supports on the sides, which greatly improves the front-end structural modal while improving the radiator installation point stiffness, effectively reducing the risk of the cooling fan vibration being transmitted to the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The figure is a schematic diagram of the overall structure of an automobile front end structure in an embodiment of the present invention.

[0028] Figure 2 It is a schematic diagram of the partial structure of the front end structure body of the present invention.

[0029] Among them: 1. front end structural body; 101. radiator installation upper left bushing; 102. radiator installation lower left bushing; 103. radiator installation upper right bushing; 104. radiator installation lower right bushing; 2. left headlight crossbeam assembly; 3. right headlight crossbeam assembly; 301. first fastening mounting bolt; 4. front upper anti-collision beam assembly; 401. second fastening mounting bolt; 5. front lower anti-collision beam assembly; 501. third fastening mounting bolt. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-2 The present invention provides a front-end structure of an automobile, comprising a front-end structure body 1, a front-end structure body 1, a left headlight cross beam frame assembly 2 fixedly connected to the upper surface of the front-end structure body 1, a right headlight cross beam frame assembly 3 fixedly connected to the upper surface of the front-end structure body 1, a first fastening and mounting bolt 301 is used to enable the left headlight cross beam frame assembly 2 and the right headlight cross beam frame assembly 3 to be installed, so that the left headlight cross beam frame assembly 2 and the right headlight cross beam frame assembly 3 are convenient for the later installation and use of the left headlight and the right headlight, a front upper anti-collision beam assembly 4 is fixedly connected to the front surface of the front-end structure body 1, and the front upper anti-collision beam assembly 4 can be fixedly connected to the upper surface of the front-end structure body 1 by the second fastening and mounting bolt 401 It is threadedly installed on the front end structure body 1, so that it can increase the strength of the front end body structure. The front surface of the front end structure body 1 is fixedly connected with a front lower anti-collision beam assembly 5. The front lower anti-collision beam can be threadedly fixedly connected to the front of the front end structure body 1 by using the third fastening mounting bolt 501. The front lower anti-collision beam cooperates with the front upper anti-collision beam to improve the overall strength of the front end structure body 1, thereby improving the service life of the front end structure body 1 and is not prone to deformation. The sheet metal bracket is easy to form, has a simple structure, and is low in cost, thereby achieving low cost and high performance. The overall rigidity of the front end structure is strengthened by adding a connecting bracket and adding a triangular support on the side.

[0032] The front end of the right headlight crossbeam assembly 3 is threadedly connected with a first fastening mounting bolt 301, the rear surface of the front upper anti-collision beam assembly 4 is threadedly connected with a second fastening mounting bolt 401, and both sides of the front lower anti-collision beam assembly 5 are threadedly connected with a third fastening mounting bolt 501. By adding a bracket by screwing, the rigidity of the mounting point is improved without affecting the installation of the subframe of other models on the same platform. It is only necessary to reserve fastening mounting bolt mounting holes at the corresponding positions, which greatly reduces the test verification cost and the cost of modifying each model of the platform. First, the front end structure body 1 is assembled with the left headlight crossbeam assembly 2 and the right headlight crossbeam assembly 3, and the left headlight crossbeam assembly 2 and the right headlight crossbeam assembly 3 are installed by the first fastening mounting bolt 301. Secondly, the front The front end structure body 1 is assembled with the front upper anti-collision beam assembly 4 and the front longitudinal beam of the vehicle body. The front upper anti-collision beam assembly 4 can be threadedly connected and installed by the second fastening and mounting bolts 401. The front end structure body 1 is assembled with the front lower anti-collision beam assembly 5. The front lower anti-collision beam assembly 5 is threadedly fixedly connected by the third fastening and mounting bolts 501. The inner wall of the front end structure body 1 is provided with a radiator installation upper left bushing 101. Since the middle of the front end structure body 1 is hollow, the radiator can be installed on the inner wall of the front end body structure. The radiator installation upper left bushing 101 can be used to snap-fit ​​and connect the upper left corner of the radiator. The inner wall of the front end structure body 1 is provided with a radiator installation lower left bushing 102. The radiator installation lower left bushing 102 can be used to The lower left corner of the radiator is snap-fitted and connected, and the upper left bushing 101 for radiator installation is matched to make it possible to connect the left side of the radiator. The inner wall of the front end structure body 1 is provided with an upper right bushing 103 for radiator installation. The upper right bushing 103 for radiator installation is used to make it possible to snap-fit ​​and connect the upper right corner of the radiator. Since the installation positions of the upper right bushing 103 for radiator installation are consistent with those of the upper left bushing 101 for radiator installation, the stability of the radiator installation can be ensured. The inner wall of the front end structure body 1 is provided with a lower right bushing 104 for radiator installation. The lower right corner of the radiator is snap-fitted and fixed by inserting it into the lower right bushing 104 for radiator installation. The lower right bushing 104 and the upper right bushing 1 for radiator installation are used to install the radiator. 03. The radiator is installed with the lower left bushing 102 and the upper left bushing 101, so that the installation of the radiator can be completed. The overall stiffness of the front-end structure is strengthened by adding a connecting bracket and a triangular support on the side, which greatly improves the front-end structural mode and the radiator installation dynamic stiffness, effectively reducing the risk of the cooling fan vibration being transmitted to the vehicle body. There is a certain distance between the front upper anti-collision beam assembly 4 and the front lower anti-collision beam assembly 5 and the front-end structure body 1. The front-end structure body 1 connects the upper end to the side end through a new bracket, and the front-end structure connects the upper end to the side end through a new bracket. The side stiffness is strengthened by adding a side triangular support, and the overall average of the radiator installation dynamic stiffness is increased by 60%, which greatly improves the vibration isolation rate at this position, thereby improving the NVH performance.By adding side triangle supports to strengthen the side rigidity, the overall rigidity of the front-end structure is strengthened by adding connecting brackets and side triangle supports, which greatly improves the front-end structural modality while improving the radiator installation dynamic rigidity, effectively reducing the risk of the cooling fan vibration being transmitted to the vehicle body.

[0033] When in use, the first fastening and mounting bolt 301 is used to install the left headlight crossbeam frame assembly 2 and the right headlight crossbeam frame assembly 3, so that the left headlight crossbeam frame assembly 2 and the right headlight crossbeam frame assembly 3 are convenient for the later installation and use of the left headlight and the right headlight. The second fastening and mounting bolt 401 can be used to thread the upper front anti-collision beam and install it on the front end structure body 1, so that it can increase the strength of the front end body structure. The third fastening and mounting bolt 501 can be used to thread and fix the lower front anti-collision beam in front of the front end structure body 1. The lower front anti-collision beam cooperates with the upper front anti-collision beam to improve the integrity of the front end structure body 1. The strength of the body can be improved, thereby improving the service life of the front end structure body 1. Since the middle of the front end structure body 1 is hollow, the radiator can be installed on the inner wall of the front end body structure. The upper left bushing 101 of the radiator installation can be used to perform a card-joined connection with the upper left corner of the radiator. The lower left bushing 102 of the radiator installation can be used to perform a card-joined connection with the lower left corner of the radiator. The upper left bushing 101 of the radiator installation can be used to connect the left side of the radiator. The upper right bushing 103 of the radiator installation can be used to perform a card-joined connection with the upper right corner of the radiator. Since the upper right bushing 103 of the radiator installation is connected to the radiator The installation positions of the upper left bushing 101 of the radiator installation are consistent, so that the stability of the radiator installation can be ensured. The lower right corner of the radiator is inserted into the lower right bushing 104 of the radiator installation to fix the lower right corner of the radiator. The installation of the radiator can be completed by using the lower right bushing 104, the upper right bushing 103, the lower left bushing 102 and the upper left bushing 101 of the radiator installation. The overall rigidity of the front-end structure is strengthened by adding a connecting bracket and a triangular support on the side, which greatly improves the front-end structural modality and improves the radiator installation inching rigidity, effectively reducing The risk of the cooling fan vibration being transmitted to the vehicle body is reduced. At the same time, the sheet metal bracket is easy to form, has a simple structure, and is of low cost, achieving low cost and high performance. By adding brackets by screw connection, the stiffness of the mounting point is improved without affecting the subframe installation of other models on the same platform. Only the mounting holes for fastening mounting bolts need to be reserved at the corresponding positions, which greatly reduces the test verification cost and the cost of modifying each model of the platform. The overall stiffness of the front-end structure is strengthened by adding connecting brackets and triangular supports on the sides, which greatly improves the front-end structural modal while improving the dynamic stiffness of the radiator mounting point, effectively reducing the risk of the cooling fan vibration being transmitted to the vehicle body.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A front end structure of an automobile, comprising a front end structure body (1), characterized in that: The front end structure body (1) has a left headlight cross beam frame assembly (2) fixedly connected to its upper surface, a right headlight cross beam frame assembly (3) fixedly connected to its upper surface, a front upper anti-collision beam assembly (4) fixedly connected to its front surface, and a front lower anti-collision beam assembly (5) fixedly connected to its front surface.

2. The automobile front end structure according to claim 1, characterized in that: The front end of the right headlight crossbeam frame assembly (3) is threadedly connected with a first fastening mounting bolt (301).

3. The automobile front end structure according to claim 1, characterized in that: A second fastening mounting bolt (401) is threadedly connected to the rear surface of the front upper anti-collision beam assembly (4).

4. The automobile front end structure according to claim 1, characterized in that: Third fastening and mounting bolts (501) are threadedly connected on both sides of the front lower anti-collision beam assembly (5).

5. The automobile front end structure according to claim 1, characterized in that: The inner wall of the front end structural body (1) is provided with a left upper bushing (101) for installing a radiator.

6. The automobile front end structure according to claim 1, characterized in that: The inner wall of the front end structural body (1) is provided with a left lower bushing (102) for mounting a radiator.

7. The automobile front end structure according to claim 1, characterized in that: The inner wall of the front end structural body (1) is provided with a radiator mounting right upper bushing (103).

8. The automobile front end structure according to claim 1, characterized in that: The inner wall of the front end structural body (1) is provided with a lower right bushing (104) for mounting a radiator.

9. The automobile front end structure according to claim 1, characterized in that: There is a certain distance between the front upper anti-collision beam assembly (4), the front lower anti-collision beam assembly (5) and the front end structure body (1).

10. The automobile front end structure according to claim 1, characterized in that: The front end structure body (1) connects the upper end with the side end via a new bracket, and the side rigidity is reinforced by adding side triangular supports.

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