CN108791516B - Automobile instrument panel pipe beam assembly - Google Patents

Abstract

The invention discloses an automobile instrument panel pipe beam assembly, which includes a pipe beam middle tube arranged along the width direction of the vehicle body and facing the body front wall structure. Side mounting brackets are respectively provided at both ends of the pipe beam middle pipe. It is fixedly connected to the front wall structure of the vehicle body; the middle tube of the tube beam is also provided with an electrical installation bracket, a front wall mounting bracket, a steering column mounting bracket and a central control mounting bracket; it is characterized in that the central control mounting bracket includes a The left support rod and the right support rod are arranged at intervals in the direction of the tube axis in the tube beam, and the entire left support rod and the entire right support rod are inclined downward in the direction away from the vehicle body front wall structure, and the outer end of the left support rod A connection end for connecting with the front floor of the vehicle body is formed; and the left support rod has a circular tube structure. The invention has the advantages of being able to better meet the lightweight design requirements, having better rigidity, and being able to reduce costs.

Description

Automobile instrument panel pipe beam assembly

Technical field

The invention belongs to the field of automobile technology, and particularly relates to an automobile instrument panel pipe beam assembly.

Background technique

The instrument panel, also known as the instrument panel, is widely used in the cabs of all vehicles and construction machinery. It is mainly composed of instruments, steering wheels, instrument panel shells, instrument panel beams (instrument panel skeleton) and instrument panel wiring harnesses.

The instrument panel is located directly in front of the driver. The instrument panel will integrate the odometer, speedometer, engine speedometer, fuel gauge, etc. The driver can not only understand the basic driving status of the vehicle through the dashboard, but also control the air vents, audio, air conditioning, lights, etc., thereby ensuring safety while enjoying more driving fun. In recent years, with the continuous advancement of technology, more operating functions have been integrated into the dashboard.

The instrument panel tube beam provides support for the instrument panel and its accessories, such as the passenger side airbag, steering column and air conditioner. Moreover, the instrument panel tube beam is directly connected to the body through two positioning pins and multiple bolts, and bears the load of the instrument panel assembly, which has a great impact on the safety of the car. Of course, in order to ensure that the various instruments and parts supported can work normally under high-speed driving and vibration conditions, the instrument panel tube beam must have sufficient rigidity. In order to reduce the impact of external forces on the alignment and co-pilot in the event of an accident, it is also required that The instrument panel pipe beam has good energy absorption; at the same time, the instrument panel pipe beam must also meet the lightweight requirements.

Chinese patent (CN206568898U) discloses a new type of automobile dashboard pipe beam assembly, which is characterized in that it includes a pipe beam middle pipe and a pipe sleeve reinforcement wrapped around the pipe beam middle pipe. The ribs are installed with a left mounting bracket, a relay mounting bracket, a steering column reinforcement bracket, a lower mounting bracket, a central control bracket, an upper mounting bracket, an airbag mounting bracket and a right mounting bracket in sequence from left to right; the tube The tube in the beam is made of aluminum-magnesium alloy material; the pipe sleeve reinforcing rib, the left mounting bracket, the relay mounting bracket, the steering column reinforcing bracket, the lower mounting bracket, and the central control bracket , the upper side mounting bracket, the airbag mounting bracket and the right side mounting bracket are all made of nylon 66 material.

In the above-mentioned patent, lightweight materials are used to meet the lightweight requirements of the instrument panel tube beam design. When meeting the lightweight requirements, the tube in the tube beam is made of aluminum-magnesium alloy material, which is safe. The airbag mounting bracket and the right mounting bracket are both made of nylon 66 material, which is a technical solution that affects its cost and stiffness.

Therefore, how to provide an automotive instrument panel pipe beam assembly that can better meet the lightweight design requirements, have better rigidity, and reduce costs has become a technical problem to be solved by those skilled in the art.

Contents of the invention

In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide an automobile instrument panel pipe beam assembly that can better meet the lightweight design requirements, have better rigidity, and reduce costs.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

The automobile dashboard pipe beam assembly includes a pipe beam middle tube arranged along the width direction of the vehicle body and facing the body front wall structure. Side mounting brackets are respectively provided at both ends of the pipe beam middle tube for connecting to the body front wall. The structure is fixedly connected; the middle pipe of the pipe beam is also provided with an electrical installation bracket, a front wall mounting bracket, a steering column mounting bracket and a central control mounting bracket; it is characterized in that the central control mounting bracket includes a bracket along the middle pipe of the pipe beam. The left support rod and the right support rod are arranged at intervals in the axial direction, and the entire left support rod and the entire right support rod are inclined downward in the direction away from the front wall structure of the vehicle body, and the outer end of the left support rod is formed to connect with the front wall structure of the vehicle body. The connecting end connected to the front floor of the vehicle body; and the left support rod is a round tube structure.

In this technical solution, since the entire instrument panel is installed on the instrument panel pipe beam assembly, the instrument panel pipe beam assembly serves as a load-bearing component, that is, the instrument panel pipe beam assembly needs to be fixedly installed on the vehicle body to have better stability. Stability and stiffness, and at the same time also need to meet the lightweight requirements of automotive design. When the car is braking or accelerating, the left support rod connected to the front floor of the car body will be pushed and pulled along its length. Therefore, the left support rod connected to the front floor of the vehicle body in the instrument panel tube beam assembly is designed into a circular tube structure. This design makes the left support rod have better force-bearing effect, is not easily deformed after being stressed, and has better rigidity. The left support rod of round tube structure can better withstand the thrust and pull force transmitted from the car body to the instrument panel tube beam assembly, making the installation of the entire car dashboard more stable. At the same time, the left support rod of round tube structure can also meet the lightweight design of the car. Require.

As an optimization, several weight-reducing holes are provided on the left support rod at intervals along its own axis.

In this way, the mass of the left support rod can be made smaller, and while the overall stiffness of the left support rod can be improved, it can better meet the lightweight requirements of automobile design.

As an optimization, the left support rod includes an upper section of the support rod fixedly connected to the middle tube of the pipe beam, and a lower section of the support rod connected to the outer end of the upper section of the support rod, and the angle between the upper section of the support rod and the front floor of the vehicle body is smaller than the lower section of the support rod. The angle between it and the front floor of the car body.

In this way, when the entire left support rod is subjected to the tensile force and push force of the tube in the pipe beam, the bending connection between the upper section of the support rod and the lower section of the support rod on the left support rod can produce stress concentration, and can react to the tensile force and push force. The thrust forms a certain buffer, which can protect the left support rod.

As an optimization, an oblique support rod is provided between the outer surface of the outer end of the upper section of the support rod and the middle tube of the pipe beam. The two ends of the oblique support rod are respectively fixedly connected to the outer sides of the middle pipe of the pipe beam and the upper section of the support rod.

In this way, the connection between the horizontal section of the support rod and the middle tube of the pipe beam is more stable, so that the horizontal section of the support rod can be better maintained vertically relative to the middle pipe of the pipe beam. This results in a better force-bearing effect.

As an optimization, there are also first and second support rods arranged at intervals between the left support rod and the right support rod, and the two ends of the first and second support rods are respectively fixed to the left support rod. and on the right support rod.

In this way, the stability of the left support rod and the right support rod can be improved, and at the same time, it can also facilitate the installation and fixation of the central control.

As an optimization, a left lower decorative panel bracket extending toward the left side is also connected to the position between the first support pole and the second support pole on the left support pole.

In this way, the lower decorative panel can be easily installed and fixed.

As an optimization, the middle pipe of the pipe beam has a three-section design, including the left section of the middle pipe, the middle section of the middle pipe and the right section of the middle pipe that are connected in sequence; the diameters of the left section of the middle pipe and the right section of the middle pipe are equal and larger than the middle section of the middle pipe diameter of.

In this way, the normal pipe in the pipe beam is designed with two ends, divided into a large diameter section and a small diameter section. The large diameter section and the small diameter section correspond to the positions of the front cab and passenger cab respectively, which can ensure that the entire pipe beam The mass of the middle tube is smaller, and at the same time, the stiffness of the middle tube of the entire tube beam can meet the requirements. However, because the diameters of the two ends of the pipe in the pipe beam are different, the corresponding components installed on the side mounting brackets at the left and right ends of the pipe in the pipe beam and connected to the pipe in the pipe beam need to be designed with different sizes to match the pipe in the pipe beam. . By designing the middle pipe of the pipe beam in three sections, and setting the diameters of the left section of the middle pipe and the right section of the middle pipe to be equal in size, the components on the side mounting bracket connected to the middle pipe of the pipe beam can be eliminated during production. Selecting and matching can make the corresponding components installed on the side mounting brackets at the left and right ends of the pipe beam and connected to the pipe beam middle pipe universal, which can better reduce production costs and make production more convenient.

As an optimization, a plurality of weight-reducing holes are provided on the left section of the middle tube at intervals along its own axis.

In this way, the mass of the tubes in the entire tube beam can be made smaller, which can not only meet the overall stiffness of the tubes in the tube beam, but also better meet the lightweight requirements of automobile design.

As an optimization, the right section of the middle tube has at least one position for installing a side mounting bracket in the axial direction.

In this way, the length of the right section of the middle tube can be made smaller, and the mass of the entire tube beam can be made smaller. While satisfying the overall stiffness of the tube in the tube beam, it can better meet the lightweight requirements of automobile design.

As an optimization, the side mounting bracket includes a connection structure for connecting with the body front wall structure and a support structure for connecting with the instrument panel; the support structure includes a side support plate with a long strip design, and the side support One end of the plate is fixedly connected to the middle pipe of the pipe beam, and the other end of the side support plate is set outward vertically from the middle pipe of the pipe beam and is provided with a connection hole for connecting to the inside of the end of the instrument panel; and on the side support plate along its own Weight-reducing holes are provided at intervals along the length.

In this way, the support and installation of the instrument panel are facilitated, and the entire instrument panel pipe beam assembly can be more conveniently installed on the vehicle body front wall structure. At the same time, the weight reduction holes designed on the side support plates can better meet the vehicle's lightweight design requirements.

As an optimization, the connection structure includes a connecting plate designed in a long strip. One surface of the connecting plate is fixedly connected to the middle pipe of the pipe beam. The other surface of the connecting plate is provided vertically outward for plugging into the front of the vehicle body. The latches of the surrounding structure, and the two ends of the connecting plate along the diameter direction of the pipe in the pipe beam are each bent in the direction away from the latches to form support ends for connecting to the instrument panel, and the connecting plate is formed as a whole in the length direction. "U" shaped structure.

In this way, the fixing and installation of the instrument panel can be facilitated. And the support effect for the instrument panel is better.

As an optimization, the electrical installation bracket includes a first bracket plate, a second bracket plate, a third bracket plate, a fourth bracket plate and a fifth bracket plate that are designed in a long strip and one end is fixedly connected to the pipe in the pipe beam. ; And the outer ends of the first bracket plate and the second bracket plate are respectively arranged toward the vehicle body front wall structure, and the outer ends of the third bracket plate, the fourth bracket plate and the fifth bracket plate are each inclined in the direction away from the vehicle body front wall structure. and are provided with weight-reducing holes at intervals along the length direction of the first bracket plate, the second bracket plate, the third bracket plate, the fourth bracket plate and the fifth bracket plate.

In this way, the installation and fixing of electrical components can be facilitated, and the weight-reducing holes provided on the first, second, third, fourth and fifth bracket plates can better meet the requirements of the automobile. Lightweight design requirements.

As an optimization, a side bracket plate is also provided outside the third bracket plate, and a connection hole for electrical installation is formed on the outer end of the side bracket plate.

In this way, electrical components and wiring harnesses can be easily installed and fixed.

As an optimization, the steering column mounting bracket includes a seat plate fixedly arranged on the lower side of the circumference of the tube in the tube beam, and the front end of the seat plate extends forward and beyond the circumferential front side of the tube in the tube beam to form a connection with the steering column. The first connection position, the rear end of the seat plate extends rearward and is set to the rear side beyond the circumference of the tube in the pipe beam to form a second connection position for connecting to the steering column; and the upper surface of the rear end of the seat plate is connected to the pipe beam A stabilizing plate is fixed between the circumference and the rear side of the middle tube.

In this way, the first connection position and the second connection position on the seat plate are both used to be connected to the steering column. The front and rear ends of the seat plate bear the weight of the entire steering column. The car is traveling on uneven roads or at very high speeds. When the height is high, the seat plate is prone to deformation and vibration under the gravity of the steering column. Usually, the problem of seat plate deformation and vibration is solved by increasing the thickness of the seat plate. However, research has found that by increasing the thickness of the seat plate, the front and rear ends of the seat plate are the force-bearing ends used to connect to the steering column and bear gravity, and are still prone to deformation and vibration. Therefore, a stabilizing plate is fixed between the upper surface of the rear end of the seat plate and the rear side of the tube beam middle tube circumference. Compared with the method of thickening the seat plate, it can make the stiffness better and the overall mass smaller. , so that the rear end of the seat plate has a better force-bearing effect, making it able to improve the mode, and is less likely to deform and vibrate after being stressed.

As an optimization, the left and right sides and the rear end of the stabilizing plate are bent downward and abutted and fixed on the upper surface connecting the rear end of the seat plate, so that a box is formed between the seat plate, the middle tube of the pipe beam and the stabilizing plate. structure.

In this way, a box structure is formed between the seat plate, the middle tube of the tube beam and the stabilizing plate, which can improve the mode of the rear end of the seat plate, making the rear end of the seat plate less likely to vibrate under stress, and the formed box structure can make The rear end of the seat plate has better rigidity and is less prone to deformation.

As an optimization, the middle position of the rear end of the seat plate is arched upward to form a first connection part and a second connection part. The first connection part is close to and fixedly connected to the lower side of the pipe circumference in the pipe beam, and the The second connecting part is in contact with and fixedly connected to the lower surface of the stabilizing plate.

In this way, the welding connection between the seat plate and the middle tube of the pipe beam can be more convenient. At the same time, the area between the seat plate and the stabilizing plate is larger and the fixed connection area can better ensure the stiffness of the seat plate, making the seat more convenient. The board is not prone to deformation.

As an optimization, the first connecting portion and the second connecting portion at the rear end of the seat plate are respectively provided with polygonal relief holes that run through the thickness direction of the seat plate.

In this way, the welding between the seat plate and the tube in the pipe beam can be facilitated, and the welding points can be easily made; it can also facilitate the welding between the seat plate and the stabilizing plate, and the welding points can be made easily.

As an optimization, the left and right ends of the seat plate are bent upward to form the left side plate and the right side plate respectively, so that the cross section of the seat plate has a "U" shape structure, and the left side plate and the right side plate are in line with the pipe beam. Corresponding positions of the middle tube are bent outwards and correspondingly form third connecting portions and fourth connecting portions for abutting and fixedly connecting to the lower side of the middle tube of the tube beam.

In this way, the area where the seat plate and the middle pipe of the pipe beam are connected is larger, and the seat plate is more stable and reliable after being connected to the middle pipe of the pipe beam. Moreover, the box structure formed between the seat plate and the stabilizing plate is more stable, with better strength and rigidity.

As an optimization, a connecting lug is fixedly provided on the lower surface of the front end of the seat plate. The cross-section of the connecting lug is a "U"-shaped structure and the opening is set downward. A steering column connection hole is provided on the connecting lug to form the first connection position. .

This facilitates the connection between the steering column and the front end of the seat plate. And the connection is more reliable.

As an optimization, two projection weld nuts are provided on the upper surface of the rear end of the seat plate at intervals along the axial direction of the tube in the tube beam to form the second connection position.

In this way, the connection between the steering column and the rear end of the seat plate is convenient, and the connection method is simpler.

As an optimization, the cowl mounting bracket includes a cowl connecting plate fixedly connected to the front end of the seat panel and tilted upward, and the upper end of the cowl connecting plate is vertically bent upward and formed to fit into the vehicle body front wall structure. Connected connection blocks.

In this way, by arranging the cowl connecting plate obliquely upward at the front end of the seat panel, and bending the upper end of the cowl connecting plate vertically upward to form a connecting block for contacting and connecting with the vehicle body cowl structure, the tubes in the tube beam can be conveniently connected. Connected to the front wall structure of the body.

As an optimization, an inclined support plate is fixed between the upper end of the connection block and the middle tube of the pipe beam, and the support plate, connection block, cowl connection plate and front end of the seat plate together form a trapezoidal structure.

In this way, the position on the tube beam corresponding to the cowl connecting plate will bear the gravity of the steering column, and the car will also receive inertial force when braking or driving at high speed. Therefore, the cowl connecting plate needs to have good rigidity and load-bearing capacity. In the above scheme, an inclined support plate is fixed between the upper end of the connecting block and the middle tube of the pipe beam, and the supporting plate, connecting block, cowl connecting plate and the front end of the seat plate together form a trapezoidal structure. When the car When braking or driving at high speed, the connecting block receives force first. The connecting block can divide the force into two paths and transmit it to the cowl connecting plate and the support plate respectively. The force passing through the cowl connecting plate is transmitted to the pipe beam through the seat plate. In the middle tube, the force from the support plate is also transmitted to the middle tube of the tube beam. At this time, part of the two forces can be offset, which can buffer the inertial force generated by braking or high-speed driving, and can reduce the stress of the entire instrument panel. vibration. Moreover, the entire cowl mounting bracket connected to the body cowl structure has a trapezoidal structure, which makes its structure more stable and less likely to vibrate after being stressed. This makes the stress on the cowl connection plate more reasonable and can well ensure the front The surrounding connection plate maintains its original shape after being stressed and is not prone to deformation.

As an optimization, the left and right sides of the support plate are respectively bent toward the front wall connection plate and form a left support side plate and a right support side plate respectively, and the inner side of the left support side plate is fixedly connected to the left side of the front wall connection plate. surface, the inner side of the right supporting side panel is fixedly connected to the right side of the cowl connection panel; and the lower ends of the left supporting side panel and the right supporting side panel are each fixedly connected to the upper surface of the front end of the seat panel.

In this way, the mode of the cowl connecting plate can be improved, making it less likely to vibrate. More stable after being stressed.

As an optimization, weight reduction holes are provided on the front wall connecting plate, support plate, left support side plate and right support side plate.

In this way, the mass of the entire tube beam assembly can be reduced and better meet the lightweight design requirements of the entire vehicle.

Description of the drawings

Figure 1 is an axial schematic view of the present invention.

Figure 2 is an enlarged view of position B in Figure 1.

Figure 3 is a front view of Figure 1.

Figure 4 is a top view of Figure 1.

Figure 5 is a left view of Figure 1.

Figure 6 is a schematic structural diagram of the tube in the tube beam in Figure 1.

Figure 7 is a schematic structural diagram of the side mounting bracket in Figure 1.

Figure 8 is a schematic structural diagram of the cowl mounting bracket and the steering column mounting bracket in Figure 1.

Fig. 9 is a cross-sectional view along line A-A of Fig. 8 .

FIG. 10 is a top view of FIG. 8 .

FIG. 11 is a left view of FIG. 8 .

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Specific implementation: As shown in Figures 1 to 11, the automobile dashboard tube beam assembly includes a tube beam middle tube 1 arranged along the width direction of the vehicle body and facing the body front wall structure. There are side mounting brackets at both ends for fixed connection with the front wall structure of the vehicle body; there are also corresponding electrical installation brackets, front wall mounting brackets, steering column mounting brackets and central control mounting brackets on the middle tube of the tube beam; its characteristics The central control installation bracket includes a left support rod 2 and a right support rod 3 arranged at intervals along the axis of the middle tube of the pipe beam, and the entire left support rod and the entire right support rod are facing away from the front wall structure of the vehicle body. It is arranged obliquely downward, and the outer end of the left support rod forms a connection end for connecting with the front floor of the vehicle body; and the left support rod 2 has a circular tube structure.

In this technical solution, since the entire instrument panel is installed on the instrument panel pipe beam assembly, the instrument panel pipe beam assembly serves as a load-bearing component, that is, the instrument panel pipe beam assembly needs to be fixedly installed on the vehicle body to have better stability. Stability and stiffness, and at the same time also need to meet the lightweight requirements of automotive design. When the car is braking or accelerating, the left support rod connected to the front floor of the car body will be pushed and pulled along its length. Therefore, the left support rod connected to the front floor of the vehicle body in the instrument panel tube beam assembly is designed into a circular tube structure. This design makes the left support rod have better force-bearing effect, is not easily deformed after being stressed, and has better rigidity. The left support rod of round tube structure can better withstand the thrust and pull force transmitted from the car body to the instrument panel tube beam assembly, making the installation of the entire car dashboard more stable. At the same time, the left support rod of round tube structure can also meet the lightweight design of the car. Require.

In this specific embodiment, several weight-reducing holes are provided on the left support rod 2 at intervals along its own axis.

In this way, the mass of the left support rod can be made smaller, and while the overall stiffness of the left support rod can be improved, it can better meet the lightweight requirements of automobile design.

In this specific embodiment, the left support rod 2 includes an upper support rod section 4 fixedly connected to the middle tube of the pipe beam, and a lower support rod section 5 connected to the outer end of the upper support rod section 4, and between the upper support rod section and the front floor of the vehicle body The angle is smaller than the angle between the lower section of the support rod and the front floor of the car body.

In this way, when the entire left support rod is subjected to the tensile force and push force of the tube in the pipe beam, the bending connection between the upper section of the support rod and the lower section of the support rod on the left support rod can produce stress concentration, and can react to the tensile force and push force. The thrust forms a certain buffer, which can protect the left support rod.

In this specific embodiment, an oblique support rod 6 is provided between the outer surface of the outer end of the upper section of the support rod and the middle tube of the pipe beam. The two ends of the oblique support rod are respectively fixedly connected to the middle pipe of the pipe beam and the upper section of the support rod. outside.

In this way, the connection between the horizontal section of the support rod and the middle tube of the pipe beam is more stable, so that the horizontal section of the support rod can be better maintained vertically relative to the middle pipe of the pipe beam. This results in a better force-bearing effect.

In this specific embodiment, there are also first struts 7 and second struts 8 arranged at intervals between the left support bar and the right support bar, and the two ends of the first strut and the second strut are respectively Fixed on the left and right support rods.

In this way, the stability of the left support rod and the right support rod can be improved, and at the same time, it can also facilitate the installation and fixation of the central control.

In this specific embodiment, a left lower decorative panel bracket 9 extending toward the left is also connected to the position between the first support pole and the second support pole on the left support pole.

In this way, the lower decorative panel can be easily installed and fixed.

In this specific embodiment, the middle pipe 1 of the pipe beam has a three-section design, including a left section 10 of the middle pipe, a middle section 11 of the middle pipe and a right section 12 of the middle pipe that are connected in sequence; the left section of the middle pipe and the right section of the middle pipe are The diameter is equal to and larger than the diameter of the middle section of the midtube.

In this way, the normal pipe in the pipe beam is designed with two ends, divided into a large diameter section and a small diameter section. The large diameter section and the small diameter section correspond to the positions of the front cab and passenger cab respectively, which can ensure that the entire pipe beam The mass of the middle tube is smaller, and at the same time, the stiffness of the middle tube of the entire tube beam can meet the requirements. However, because the diameters of the two ends of the pipe in the pipe beam are different, the corresponding components installed on the side mounting brackets at the left and right ends of the pipe in the pipe beam and connected to the pipe in the pipe beam need to be designed with different sizes to match the pipe in the pipe beam. . By designing the middle pipe of the pipe beam in three sections, and setting the diameters of the left section of the middle pipe and the right section of the middle pipe to be equal in size, the components on the side mounting bracket connected to the middle pipe of the pipe beam can be eliminated during production. Selecting and matching can make the corresponding components installed on the side mounting brackets at the left and right ends of the pipe beam and connected to the pipe beam middle pipe universal, which can better reduce production costs and make production more convenient.

In this specific embodiment, the diameter of the left section of the middle tube and the right section of the middle tube is 50 to 60 mm, and the diameter of the middle section of the middle tube is 40 to 45 mm.

In this way, the design is more reasonable and can be more convenient for processing and manufacturing. Optimally, the diameter of the left section of the middle tube and the right section of the middle tube is 55mm, and the diameter of the middle section of the middle tube is 45mm.

In this specific embodiment, a plurality of weight-reducing holes are provided on the left section 10 of the middle tube at intervals along its own axis.

In this way, the mass of the tubes in the entire tube beam can be made smaller, which can not only meet the overall stiffness of the tubes in the tube beam, but also better meet the lightweight requirements of automobile design.

In this specific embodiment, the right section 12 of the middle tube has at least one position for installing a side mounting bracket in the axial direction.

In this way, the length of the right section of the middle tube can be made smaller, and the mass of the entire tube beam can be made smaller. While satisfying the overall stiffness of the tube in the tube beam, it can better meet the lightweight requirements of automobile design.

In this specific embodiment, the side mounting bracket includes a connection structure for connecting to the front wall structure of the vehicle body and a support structure for connecting to the instrument panel; the support structure includes a side support plate 13 designed in a long strip, One end of the side support plate is fixedly connected to the middle pipe of the pipe beam, and the other end of the side support plate is set outward perpendicular to the middle pipe of the pipe beam and is provided with a connection hole for connecting to the inside of the end of the instrument panel; and on the side support plate Weight-reducing holes are provided at intervals along its length.

In this way, the support and installation of the instrument panel are facilitated, and the entire instrument panel pipe beam assembly can be more conveniently installed on the vehicle body front wall structure. At the same time, the weight reduction holes designed on the side support plates can better meet the vehicle's lightweight design requirements.

In this specific embodiment, the connection structure includes a connecting plate 14 designed in a long strip. One surface of the connecting plate is fixedly connected to the pipe in the pipe beam. The other surface of the connecting plate is provided vertically outward with a plug for inserting. Connected to the latch 15 of the vehicle body cowl structure, and the two ends of the connecting plate along the diameter direction of the tube in the tube beam are each bent in the direction away from the latch to form a support end for connecting to the instrument panel, and the connecting plate is The overall length direction is a "U" shaped structure.

In this way, the fixing and installation of the instrument panel can be facilitated. And the support effect for the instrument panel is better.

In this specific embodiment, the electrical installation bracket includes a first bracket plate 16, a second bracket plate 17, a third bracket plate 18, and a fourth bracket that are designed in a long strip and one end is fixedly connected to the middle pipe of the pipe beam. plate 19 and the fifth bracket plate 20; and the outer ends of the first bracket plate and the second bracket plate are respectively arranged toward the vehicle body front wall structure, and the outer ends of the third bracket plate, the fourth bracket plate and the fifth bracket plate are respectively facing away from each other. The direction of the vehicle body front wall structure is inclined downward; and weight reduction plates arranged at intervals are respectively provided along the length direction of the first bracket plate, the second bracket plate, the third bracket plate, the fourth bracket plate and the fifth bracket plate. hole.

In this way, the installation and fixing of electrical components can be facilitated, and the weight-reducing holes provided on the first, second, third, fourth and fifth bracket plates can better meet the requirements of the automobile. Lightweight design requirements.

In this specific embodiment, a side bracket plate 21 is also provided on the outside of the third bracket plate, and an electrical installation connection hole is formed on the outer end of the side bracket plate.

In this way, electrical components and wiring harnesses can be easily installed and fixed.

In this specific embodiment, the steering column mounting bracket includes a seat plate 22 fixedly arranged on the lower side of the circumference of the tube in the tube beam, and the front end of the seat plate extends forward and beyond the circumferential front side of the tube in the tube beam to form a A first connection point connected to the steering column, the rear end of the seat plate extending rearward and beyond the circumferential rear side of the tube in the tube beam to form a second connection point for connection to the steering column; and on the rear end of the seat plate A stabilizing plate 23 is fixed between the surface and the rear side of the pipe circumference in the pipe beam.

In this way, the first connection position and the second connection position on the seat plate are both used to be connected to the steering column. The front and rear ends of the seat plate bear the weight of the entire steering column. The car is traveling on uneven roads or at very high speeds. When the height is high, the seat plate is prone to deformation and vibration under the gravity of the steering column. Usually, the problem of seat plate deformation and vibration is solved by increasing the thickness of the seat plate. However, research has found that by increasing the thickness of the seat plate, the front and rear ends of the seat plate are the force-bearing ends used to connect to the steering column and bear gravity, and are still prone to deformation and vibration. Therefore, a stabilizing plate is fixed between the upper surface of the rear end of the seat plate and the rear side of the tube beam middle tube circumference. Compared with the method of thickening the seat plate, it can make the stiffness better and the overall mass smaller. , so that the rear end of the seat plate has a better force-bearing effect, making it able to improve the mode, and is less likely to deform and vibrate after being stressed.

In this specific embodiment, the left and right sides and the rear end of the stabilizing plate 23 are bent downward and abutted and fixed on the upper surface connecting the rear end of the seat plate, so that the connection between the seat plate, the middle tube of the pipe beam and the stabilizing plate A box structure is formed between them.

In this way, a box structure is formed between the seat plate, the middle tube of the tube beam and the stabilizing plate, which can improve the mode of the rear end of the seat plate, making the rear end of the seat plate less likely to vibrate under stress, and the formed box structure can make The rear end of the seat plate has better rigidity and is less prone to deformation.

In this specific embodiment, the middle position of the rear end of the seat plate 22 is arched upward and forms a first connecting part and a second connecting part. The first connecting part is attached to and fixed to the lower side of the pipe circumference in the pipe beam. Connected, the second connecting portion is in contact with and fixedly connected to the lower surface of the stabilizing plate.

In this way, the welding connection between the seat plate and the middle tube of the pipe beam can be more convenient. At the same time, the area between the seat plate and the stabilizing plate is larger and the fixed connection area can better ensure the stiffness of the seat plate, making the seat more convenient. The board is not prone to deformation.

In this specific embodiment, the first connection part and the second connection part at the rear end of the seat plate are respectively provided with polygonal relief holes that run through the thickness direction of the seat plate.

In this way, the welding between the seat plate and the tube in the pipe beam can be facilitated, and the welding points can be easily made; it can also facilitate the welding between the seat plate and the stabilizing plate, and the welding points can be made easily.

In this specific embodiment, the left and right ends of the seat plate 22 are each bent upward to form a left side plate 24 and a right side plate 25, so that the cross section of the seat plate has a "U"-shaped structure, and the left side plate and the right side plate are Positions on the plate corresponding to the tubes in the tube beam are bent outwards and correspondingly form third connecting portions and fourth connecting portions for abutting and fixedly connecting to the lower side of the tubes in the tube beam.

In this way, the area where the seat plate and the middle pipe of the pipe beam are connected is larger, and the seat plate is more stable and reliable after being connected to the middle pipe of the pipe beam. Moreover, the box structure formed between the seat plate and the stabilizing plate is more stable, with better strength and rigidity.

In this specific embodiment, a connecting lug 26 is fixedly provided on the lower surface of the front end of the seat plate. The cross-section of the connecting lug is a "U"-shaped structure and the opening is set downward. A steering column connecting hole is provided on the connecting lug to form the above-mentioned The first connection bit.

This facilitates the connection between the steering column and the front end of the seat plate. And the connection is more reliable.

In this specific embodiment, two projection weld nuts are provided on the upper surface of the rear end of the seat plate at intervals along the axial direction of the tube in the tube beam to form the second connection position.

In this way, the connection between the steering column and the rear end of the seat plate is convenient, and the connection method is simpler.

In this specific embodiment, the cowl mounting bracket includes a cowl connecting plate 27 fixedly connected to the front end of the seat panel and disposed obliquely upward, and the upper end of the cowl connecting plate is bent vertically upward and formed to connect with the front wall of the vehicle body. The connecting blocks 28 are structurally attached and connected.

In this way, by arranging the cowl connecting plate obliquely upward at the front end of the seat panel, and bending the upper end of the cowl connecting plate vertically upward to form a connecting block for contacting and connecting with the vehicle body cowl structure, the tubes in the tube beam can be conveniently connected. Connected to the front wall structure of the body.

In this specific embodiment, an inclined support plate 29 is fixed between the upper end of the connection block and the middle tube of the pipe beam, and the support plate, the connection block, the cowl connection plate and the front end of the seat plate together form a trapezoidal structure.

In this way, the position on the tube beam corresponding to the cowl connecting plate will bear the gravity of the steering column, and the car will also receive inertial force when braking or driving at high speed. Therefore, the cowl connecting plate needs to have good rigidity and load-bearing capacity. In the above scheme, an inclined support plate is fixed between the upper end of the connecting block and the middle tube of the pipe beam, and the supporting plate, connecting block, cowl connecting plate and the front end of the seat plate together form a trapezoidal structure. When the car When braking or driving at high speed, the connecting block receives force first. The connecting block can divide the force into two paths and transmit it to the cowl connecting plate and the support plate respectively. The force passing through the cowl connecting plate is transmitted to the pipe beam through the seat plate. In the middle tube, the force from the support plate is also transmitted to the middle tube of the tube beam. At this time, part of the two forces can be offset, which can buffer the inertial force generated by braking or high-speed driving, and can reduce the stress of the entire instrument panel. vibration. Moreover, the entire cowl mounting bracket connected to the vehicle body cowl structure has a trapezoidal structure, which makes its structure more stable and less likely to vibrate after being stressed. This makes the stress on the cowl connecting plate more reasonable and can well ensure the front apron. The surrounding connection plate maintains its original shape after being stressed and is not prone to deformation.

In this specific embodiment, the left and right sides of the support plate are respectively bent toward the front wall connecting plate and form a left support side plate 30 and a right support side plate 31 respectively, and the inner side of the left support side plate is fixedly connected to the front wall. The left side of the connecting panel and the inner side of the right supporting side panel are fixedly connected to the right side of the cowl connecting panel; and the lower ends of the left supporting side panel and the right supporting side panel are each fixedly connected to the upper surface of the front end of the seat panel.

In this way, the mode of the cowl connecting plate can be improved, making it less likely to vibrate. More stable after being stressed.

In this specific embodiment, weight-reducing holes are provided on the cowl connection plate, the support plate, the left support side plate and the right support side plate.

In this way, the mass of the entire tube beam assembly can be reduced and better meet the lightweight design requirements of the entire vehicle.

Claims (9)

1. The automobile instrument board tube beam assembly comprises a tube beam middle tube (1) which is used for being arranged along the width direction of the automobile body and is opposite to the automobile body front wall structure, and two ends of the tube beam middle tube are respectively provided with a side mounting bracket for being fixedly connected with the automobile body front wall structure; an electric appliance mounting bracket, a front wall mounting bracket, a steering column mounting bracket and a central control mounting bracket are correspondingly arranged on the middle pipe of the pipe beam; the central control mounting bracket is characterized by comprising a left support rod (2) and a right support rod (3) which are arranged at intervals along the axial direction of a tube beam central tube, wherein the whole left support rod and the whole right support rod are arranged obliquely downwards in the direction opposite to the front wall structure of the automobile body, and the outer end of the left support rod forms a connecting end part for connecting with the front floor of the automobile body; the left support rod (2) is of a circular tube structure;

the side mounting bracket comprises a connecting structure used for being connected with the front wall structure of the vehicle body and a supporting structure used for being connected with the instrument panel; the supporting structure comprises a side supporting plate (13) which is of a strip-shaped design, one end of the side supporting plate is fixedly connected to the middle pipe of the pipe beam, and the other end of the side supporting plate is perpendicular to the middle pipe of the pipe beam, is outwards arranged and is provided with a connecting hole for connecting with the inner side of the end part of the instrument board; weight reducing holes are formed in the side support plates at intervals along the length direction of the side support plates;

the connecting structure comprises a connecting plate (14) which is in a strip shape, one surface of the connecting plate is fixedly connected with a tube in the tube beam, a bolt (15) which is used for being inserted into a front wall structure of the vehicle body is vertically and outwards arranged on the other surface of the connecting plate, two ends of the connecting plate along the diameter direction of the tube in the tube beam are respectively bent towards the direction deviating from the bolt to form a supporting end which is used for being connected with an instrument board, and the connecting plate is integrally in a U-shaped structure in the length direction;

the electric appliance mounting bracket comprises a first bracket plate (16), a second bracket plate (17), a third bracket plate (18), a fourth bracket plate (19) and a fifth bracket plate (20), which are designed in a strip shape and one end of which is fixedly connected to a pipe in the pipe beam; the outer ends of the first support plate and the second support plate are respectively arranged towards the front wall structure of the vehicle body, and the outer ends of the third support plate, the fourth support plate and the fifth support plate are respectively arranged obliquely downwards towards the direction away from the front wall structure of the vehicle body; weight reducing holes which are arranged at intervals are respectively arranged along the length directions of the first support plate, the second support plate, the third support plate, the fourth support plate and the fifth support plate;

a side support plate (21) is further arranged on the outer side of the third support plate, and a connecting hole for electric installation is formed at the outer end of the side support plate;

the middle tube (1) of the tube beam is of a three-section design and comprises a left middle tube section (10), a middle tube middle section (11) and a right middle tube section (12) which are connected in sequence; the diameters of the left section of the middle pipe and the right section of the middle pipe are equal and larger than the diameter of the middle section of the middle pipe.

2. The automobile instrument panel tubular beam assembly according to claim 1, wherein a plurality of lightening holes are provided on the left support rod (2) at intervals along the axis direction thereof.

3. The automobile instrument panel pipe beam assembly according to claim 1, wherein the left support rod (2) comprises a support rod upper section (4) fixedly connected with the pipe in the pipe beam and a support rod lower section (5) connected to the outer end of the support rod upper section (4), and an included angle between the support rod upper section and the automobile body front floor is smaller than an included angle between the support rod lower section and the automobile body front floor.

4. An automobile instrument panel pipe beam assembly according to claim 3, wherein an inclined support rod (6) is arranged between the outer side surface of the outer end of the upper section of the support rod and the middle pipe of the pipe beam, and two ends of the inclined support rod are respectively fixedly connected to the middle pipe of the pipe beam and the outer side of the upper section of the support rod.

5. The automobile instrument panel tubular beam assembly according to claim 1, wherein a first supporting rod (7) and a second supporting rod (8) are arranged between the left supporting rod and the right supporting rod at intervals, and two ends of each of the first supporting rod and the second supporting rod are respectively fixed on the left supporting rod and the right supporting rod.

6. The automobile instrument panel tubular beam assembly of claim 5, wherein a left lower decorative plate bracket (9) extending toward the left side is further connected at a position between the first strut and the second strut on the left support rod.

7. The header plate tubular beam assembly of claim 1, wherein a plurality of lightening holes are provided in the left section (10) of the center tube at intervals along the axial direction thereof.

8. The header plate tubular beam assembly of claim 7, wherein the right middle tube section (12) has at least one location in an axial direction for mounting a side mounting bracket.

9. The header board tubular beam assembly of claim 1, wherein,

the steering column mounting bracket comprises a seat plate (22) fixedly arranged on the lower side of the circumference of the tube in the tube beam, the front end of the seat plate extends forwards and exceeds the front side of the circumference of the tube in the tube beam to form a first connecting position for connecting with the steering column, and the rear end of the seat plate extends backwards and exceeds the rear side of the circumference of the tube in the tube beam to form a second connecting position for connecting with the steering column; a stabilizing plate (23) is fixedly arranged between the upper surface of the rear end of the seat plate and the circumferential rear side of the middle pipe of the pipe beam;

the left side, the right side and the rear end of the stabilizing plate (23) are bent downwards and are abutted and fixed on the upper surface of the rear end of the connecting seat plate, and a box structure is formed among the seat plate, the tube in the tube beam and the stabilizing plate;

the middle part of the rear end of the seat plate (22) is upwards arched to form a first connecting part and a second connecting part, the first connecting part is attached to and fixedly connected with the lower side of the circumference of the middle pipe of the pipe beam, and the second connecting part is attached to and fixedly connected with the lower surface of the stabilizing plate;

the first connecting part and the second connecting part at the rear end of the seat plate are respectively provided with a polygonal abdication hole penetrating through the thickness direction of the seat plate;

the left end and the right end of the seat plate (22) are respectively bent upwards to form a left side plate (24) and a right side plate (25), the section of the seat plate is of a U-shaped structure, and the positions, corresponding to the middle pipe of the pipe beam, on the left side plate and the right side plate are respectively bent outwards and correspondingly form a third connecting part and a fourth connecting part which are used for being attached to and fixedly connected with the lower side of the circumference of the middle pipe of the pipe beam;

a connecting lug (26) is fixedly arranged on the lower surface of the front end of the seat plate, the cross section of the connecting lug is of a U-shaped structure, an opening is downwards arranged, and a steering column connecting hole is formed in the connecting lug so as to form the first connecting position;

two projection welding nuts are arranged on the upper surface of the rear end of the seat plate at intervals along the axial direction of the tube in the tube beam so as to form the second connecting position;

the front wall mounting bracket comprises a front wall connecting plate (27) fixedly connected to the front end of the seat plate and arranged obliquely upwards, and the upper end of the front wall connecting plate is vertically bent upwards to form a connecting block (28) for being attached to and connected with a front wall structure of the vehicle body;

a supporting plate (29) which is obliquely arranged is fixedly arranged between the upper end of the connecting block and the middle pipe of the pipe beam, and the supporting plate, the connecting block, the front wall connecting plate and the front end of the seat board jointly form a trapezoid structure;

the left side and the right side of the supporting plate are respectively bent towards the front wall connecting plate and respectively form a left supporting side plate (30) and a right supporting side plate (31), the inner side surface of the left supporting side plate is fixedly connected with the left side surface of the front wall connecting plate, and the inner side surface of the right supporting side plate is fixedly connected with the right side surface of the front wall connecting plate; the lower ends of the left support side plate and the right support side plate are respectively and fixedly connected to the upper surface of the front end of the seat plate;

and weight reducing holes are formed in the front wall connecting plate, the supporting plate, the left supporting side plate and the right supporting side plate.