CN209467201U - Front side member and car - Google Patents

Abstract

The utility model belongs to the technical field of front longitudinal beams of automobiles, and relates to a front longitudinal beam and an automobile. The front longitudinal beams include a front longitudinal beam body with a cross-section in the shape of a "mesh", and the front longitudinal beam body includes a rectangular frame, a first A reinforcing plate and a second reinforcing plate, the rectangular frame includes an upper transverse plate, an inner longitudinal plate, a lower transverse plate and an outer longitudinal plate connected in sequence, the upper transverse plate is located above the lower transverse plate, and the inner longitudinal plate connected between the inner side of the upper horizontal plate and the inner side of the lower horizontal plate, the outer longitudinal plate is connected between the outer side of the upper horizontal plate and the outer side of the lower horizontal plate, and the first reinforcing plate and the second reinforcing plate are arranged on In the internal space of the rectangular frame, the first reinforcing plate is located above the second reinforcing plate, and the first reinforcing plate and the second reinforcing plate are connected between the inner longitudinal plate and the outer longitudinal plate, so that the inside of the rectangular frame The space is divided into three sub-cavities stacked one above the other. Under the premise of absorbing the same collision energy, the front longitudinal beam can provide a smaller cross-sectional size and a more stable crushing form.

Description

Front side member and car

technical field

The utility model belongs to the technical field of front longitudinal beams of automobiles, in particular to a front longitudinal beam and an automobile.

Background technique

Existing automobile body generally adopts larger-sized simple "mouth" type or "day" type cross-section aluminum alloy profile structure, or adopts two open-type punched aluminum plate parts or steel plate parts to connect to form the front longitudinal beam.

As shown in Figure 1, the front longitudinal beam assembly structure 1a of a new energy vehicle model, the main longitudinal beam structure 11a is a "mouth" aluminum alloy profile, and the important installation point of Sandian is installed with a threaded pipe 12a directly welded on the longitudinal beam Inside the through hole 111a of the main structure 11a. The structure of the front longitudinal beam assembly is relatively simple. On the premise of meeting the collision requirements, the cross-sectional size of the longitudinal beam is large, the weight is heavy, and it is not conducive to the layout of the whole vehicle.

As shown in Figure 2, the front longitudinal beam assembly structure 2a of a traditional vehicle model is shown. The main longitudinal beam structure 21a is formed by connecting a C-shaped stamped aluminum plate part 211a and an I-shaped stamped aluminum plate part 212a. Nuts are installed at important installation points of the powertrain. It is connected to the main structure of the longitudinal beam through the reinforcement structure. The structure of the front longitudinal beam assembly is relatively complicated, the number of parts is large, and the number of stamping parts is mostly, the cost of mold tooling is high, and the cost of production management is high.

Utility model content

The technical problem to be solved by the utility model is: aiming at the technical problem that the front longitudinal beam assembly structure of the prior art meets the collision requirement and the longitudinal beam section size is relatively large, to provide a front longitudinal beam and an automobile.

In order to solve the above-mentioned technical problems, on the one hand, an embodiment of the utility model provides a front side beam, which includes a front side beam body with a "mesh"-shaped cross section, and the front side beam body includes a rectangular frame, a first reinforcement plate and The second reinforcement board, the rectangular frame includes an upper horizontal board, an inner longitudinal board, a lower horizontal board and an outer longitudinal board connected in sequence, the upper horizontal board is located above the lower horizontal board, and the inner longitudinal board is connected to the Between the inner side of the upper horizontal plate and the inner side of the lower horizontal plate, the outer longitudinal plate is connected between the outer side of the upper horizontal plate and the outer side of the lower horizontal plate, the first reinforcement plate and the The second reinforcement board is arranged in the inner space of the rectangular frame, the first reinforcement board is located above the second reinforcement board, and the first reinforcement board and the second reinforcement board are connected to the inner longitudinal board and the outer longitudinal plate, so as to divide the inner space of the rectangular frame into three sub-chambers stacked up and down.

According to the front side beam of the embodiment of the utility model, the cross section of the front side beam body is in the shape of "mesh", compared with the conventional "mouth" or "day" section, there is enough space to design the structure of the important installation point of the side beam. On the premise of absorbing the same collision energy, the front longitudinal beam of the embodiment of the present invention can provide a smaller cross-sectional size and a more stable crushing form. In addition, the front longitudinal beam of the embodiment of the utility model can simplify the structure of the vehicle body, reduce the structure size, reduce the weight of the vehicle body, improve the economy and power of the vehicle, and at the same time greatly reduce the number of body parts, reduce the cost of development manpower and management costs and production management costs.

Optionally, the inner longitudinal plate is parallel to the outer longitudinal plate, the upper transverse plate, the first reinforcing plate and the second reinforcing plate are parallel to the lower transverse plate, and the lower transverse plate is parallel to the lower transverse plate The outer longitudinal board is vertical.

Optionally, the aspect ratio of the rectangular frame is 0.5-0.75.

Optionally, the ratio of the distance between the upper surface of the upper horizontal plate and the upper surface of the first reinforcing plate to the height of the rectangular frame is 0.3-0.4, and the upper surface of the first reinforcing plate and the The ratio of the distance between the upper surface of the second reinforcement board to the height of the rectangular frame is 0.3 to 0.4, and the distance between the upper surface of the second reinforcement board and the lower surface of the lower horizontal board is equal to The height ratio of the rectangular frame is 0.3-0.4.

Optionally, the ratio of the thickness of the inner longitudinal plate to the thickness of the upper transverse plate is 0.6-1, and the ratio of the thickness of the outer longitudinal plate to the thickness of the upper transverse plate is 0.8-1.2.

Optionally, the thickness of the first reinforcement plate is 1-4.5mm, and the thickness of the second reinforcement plate is 1-4.5mm.

Optionally, the thickness of the upper transverse plate is the same as that of the lower transverse plate.

Optionally, the front longitudinal beam further includes a front longitudinal beam internal reinforcement, and the front longitudinal beam internal reinforcement is fixedly connected in the lowermost sub-cavity, and the front longitudinal beam internal reinforcement is provided with an edge A threaded pipe extending in the height direction of the rectangular frame, and a first through hole communicating with the inner hole of the threaded pipe is provided at a position corresponding to the threaded pipe on the lower horizontal plate.

Optionally, a positioning hole is also provided on the inner reinforcement of the front longitudinal beam, and a second through hole communicating with the positioning hole is provided at a position corresponding to the positioning hole on the lower transverse plate.

Optionally, the outer longitudinal plate is provided with a first welding hole for welding the inner reinforcement of the front longitudinal beam to the outer longitudinal plate, and the inner longitudinal plate is provided with a first welding hole for the inner reinforcement of the front longitudinal beam. The second welding hole for welding the piece to the inner longitudinal plate.

On the other hand, an embodiment of the present utility model provides an automobile, which includes the above-mentioned front side member.

Description of drawings

Fig. 1 is a schematic diagram of the front longitudinal beam assembly structure of an existing new energy vehicle;

Fig. 2 is a schematic diagram of the front longitudinal beam assembly structure of a conventional vehicle;

Fig. 3 is a schematic diagram of the front longitudinal beam provided by an embodiment of the utility model;

Fig. 4 is a cross-sectional view of the front longitudinal beam body provided by an embodiment of the present invention;

Fig. 5 is a cross-sectional view of the front longitudinal beam provided by an embodiment of the present invention.

The reference signs in the instructions are as follows:

1. Front longitudinal beam body; 11. Rectangular frame; 111. Upper transverse plate; 112. Inner longitudinal plate; 1121. Second welding hole; 113. Lower transverse plate; 1131. First through hole; 1132. Second through hole ; 114, the outer longitudinal plate; 1141, the first welding hole; 12, the first reinforcement plate; 13, the second reinforcement plate; 14, the sub-cavity;

2. Internal reinforcement of the front longitudinal beam; 21. Threaded pipe; 22. Positioning hole.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects solved by the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

In the embodiment of the utility model, the height direction of the rectangular frame is the height direction of the car, the width direction of the rectangular frame is the width direction of the car, and the length direction of the rectangular frame is the length direction of the car.

As shown in Figures 3 to 5, the front side beam provided by the embodiment of the present invention includes a front side beam body 1 with a "mesh"-shaped cross section, and the front side beam body 1 includes a rectangular frame 11, a first reinforcement plate 12 and a second reinforcing plate 13, the rectangular frame 11 includes an upper horizontal plate 111, an inner longitudinal plate 112, a lower horizontal plate 113 and an outer longitudinal plate 114 connected in sequence, and the upper horizontal plate 111 is located on the lower horizontal plate 113 above, the inner longitudinal plate 112 is connected between the inner side of the upper transverse plate 111 and the inner side of the lower transverse plate 113, and the outer longitudinal plate 114 is connected between the outer side of the upper transverse plate 111 and the inner side of the lower transverse plate 113. Between the outer sides of the lower cross plate 113, the first reinforcing plate 12 and the second reinforcing plate 13 are arranged in the inner space of the rectangular frame 11, and the first reinforcing plate 12 is located on the second reinforcing plate 13, the first reinforcing plate 12 and the second reinforcing plate 13 are connected between the inner longitudinal plate 112 and the outer longitudinal plate 114 to divide the inner space of the rectangular frame 11 into three upper and lower Laminated subcavities 14 .

According to the front longitudinal beam of the embodiment of the utility model, the cross section of the front longitudinal beam body 1 is in the shape of "mesh", compared with the conventional "mouth" or "day" cross section, there is enough space to design the structure of the important installation point of the longitudinal beam . On the premise of absorbing the same collision energy, the front longitudinal beam of the embodiment of the present invention can provide a smaller cross-sectional size and a more stable crushing form. In addition, the front longitudinal beam of the embodiment of the utility model can simplify the structure of the vehicle body, reduce the structure size, reduce the weight of the vehicle body, improve the economy and power of the vehicle, and at the same time greatly reduce the number of body parts, reduce the cost of development manpower and management costs and production management costs.

In one embodiment, as shown in FIG. 4 , the inner longitudinal board 112 is parallel to the outer longitudinal board 114 , and the upper horizontal board 111 , the first reinforcing board 12 and the second reinforcing board 13 are parallel to the The lower transverse plates 113 are parallel, and the lower transverse plates 113 are perpendicular to the outer longitudinal plates 114 to form the front longitudinal beam body 1 .

In one embodiment, as shown in FIG. 4 , the aspect ratio of the rectangular frame 11 is a:b=0.5-0.75, where a is the width of the rectangular frame 11, and b is the width of the rectangular frame 11. high.

In one embodiment, as shown in FIG. 4 , the ratio of the distance c between the upper surface of the upper horizontal plate 111 and the upper surface of the first reinforcing plate 12 to the height b of the rectangular frame 11 is 0.3 ~0.4, the ratio of the distance d between the upper surface of the first reinforcing board 12 and the upper surface of the second reinforcing board 13 to the height b of the rectangular frame 11 is 0.3~0.4, the second reinforcing The ratio of the distance e between the upper surface of the plate 13 and the lower surface of the lower transverse plate 113 to the height b of the rectangular frame 11 is 0.3-0.4, so as to form the front side beam body 1 .

By setting the section height ratio of the "mesh" type, the maximum section force can be realized on the structure of the front longitudinal beam, and the normal layout data can be satisfied.

In one embodiment, as shown in FIG. 4 , the ratio of the thickness of the inner longitudinal plate 112 to the thickness of the upper transverse plate 111 is 0.6-1, and the thickness of the outer longitudinal plate 114 to the thickness of the upper transverse plate The thickness ratio of 111 is 0.8-1.2, the thickness of the first reinforcement board 12 is 1-4.5 mm, and the thickness of the second reinforcement board 13 is 1-4.5 mm.

By setting the wall thickness of the "mesh" section to meet the collision requirements, in actual use, the specific wall thickness value can be optimized according to the actual collision analysis.

In other embodiments not shown in the figure, under the condition that the overall cross-sectional size of the longitudinal beam remains unchanged, the length, wall thickness and number of internal reinforcing plates of the front longitudinal beam can be adjusted to suit different vehicle models, which facilitates platform-based development , shorten the development cycle.

In an embodiment, as shown in FIG. 4 , the thickness of the upper transverse plate 111 is the same as that of the lower transverse plate 113 , so as to meet the collision requirement.

In one embodiment, as shown in FIG. 4 , the front longitudinal beam further includes a front longitudinal beam internal reinforcement 2, and the front longitudinal beam internal reinforcement 2 is fixedly connected in the lowermost sub-cavity 14, so that A threaded pipe 21 extending along the height direction of the rectangular frame 11 is provided on the front longitudinal beam internal reinforcement 2, and a threaded pipe 21 is provided at a position corresponding to the threaded pipe 21 on the lower cross plate 113. The first through hole 1131 with the inner holes communicating with each other.

Through the threaded pipe 21 and the first through hole 1131 , the installation points of the three-electric assembly are provided for the applicable vehicle models, meeting the requirements of high rigidity and high strength.

In one embodiment, as shown in FIG. 4 , positioning holes 22 are also provided on the front longitudinal beam inner reinforcement 2 , and positioning holes 22 corresponding to the positioning holes 22 are provided on the lower cross plate 113 . The second through hole 1132 communicates with the hole 22 .

When installing and connecting the three-electric assembly with the front longitudinal beam, the three-electric assembly can be positioned through the positioning hole 22, so as to connect the three-electric assembly with the threaded pipe 21 of the front longitudinal beam inner reinforcement 2 .

In one embodiment, as shown in FIG. 4 , the outer longitudinal plate 114 is provided with a first welding hole 1141 for welding the front longitudinal member inner reinforcement 2 to the outer longitudinal plate 114 , and the inner longitudinal The plate 112 is provided with a second welding hole 1121 for welding the inner reinforcement member 2 of the front longitudinal beam to the inner longitudinal plate 112 .

The first welding hole 1141 and the second welding hole 1121 can provide a welding space for the inner reinforcement 2 of the front side beam, so as to weld the inner reinforcement 2 of the front side beam in the lowermost sub-cavity 14 .

In one embodiment, the front longitudinal beam and the front anti-collision beam connecting plate provided by the embodiment of the utility model are connected to form a front wall subassembly, and the front wall subassembly and the front longitudinal beam joint internal and external parts, tower base and upper longitudinal beam It is connected to the front longitudinal beam assembly, and finally connected with the dash panel assembly and the front anti-collision beam assembly to form the front cabin assembly. Even the important girder structure of the lower body can absorb collision energy, reduce acceleration, and protect the safety of the passenger compartment.

The automobile provided by the embodiment of the present invention includes the above-mentioned front longitudinal member.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (11)

1. A front longitudinal beam, characterized in that it comprises a front longitudinal beam body in the shape of a "mesh" in section, the front longitudinal beam body includes a rectangular frame, a first reinforcing plate and a second reinforcing plate, and the rectangular frame It includes an upper horizontal plate, an inner longitudinal plate, a lower horizontal plate and an outer longitudinal plate connected in sequence, the upper horizontal plate is located above the lower horizontal plate, and the inner longitudinal plate is connected to the inner side of the upper horizontal plate and the Between the inner sides of the lower transverse plates, the outer longitudinal plates are connected between the outer sides of the upper transverse plates and the outer sides of the lower transverse plates, and the first reinforcing plate and the second reinforcing plate are arranged on the In the inner space of the rectangular frame, the first reinforcing plate is located above the second reinforcing plate, and the first reinforcing plate and the second reinforcing plate are connected between the inner longitudinal plate and the outer longitudinal plate, In order to divide the inner space of the rectangular frame into three sub-chambers stacked one above the other. 2. The front longitudinal member according to claim 1, wherein the inner longitudinal board is parallel to the outer longitudinal board, and the upper transverse board, the first reinforcement board and the second reinforcement board are parallel to the The lower transverse plates are parallel, and the lower transverse plates are perpendicular to the outer longitudinal plates. 3. The front side member according to claim 2, characterized in that, the aspect ratio of the rectangular frame is 0.5-0.75. 4. The front side member according to claim 2 or 3, characterized in that the ratio of the distance between the upper surface of the upper cross plate and the upper surface of the first reinforcement plate to the height of the rectangular frame is 0.3 to 0.4, the ratio of the distance between the upper surface of the first reinforcement plate and the upper surface of the second reinforcement plate to the height of the rectangular frame is 0.3 to 0.4, and the upper surface of the second reinforcement plate The ratio of the distance between the surface and the lower surface of the lower transverse plate to the height of the rectangular frame is 0.3-0.4. 5. The front longitudinal member according to claim 2 or 3, characterized in that, the ratio of the thickness of the inner longitudinal plate to the thickness of the upper transverse plate is 0.6-1, and the thickness of the outer longitudinal plate to the thickness of the upper transverse plate The thickness ratio of the above horizontal plate is 0.8-1.2. 6. The front side member according to claim 2 or 3, characterized in that, the thickness of the first reinforcing plate is 1-4.5 mm, and the thickness of the second reinforcing plate is 1-4.5 mm. 7. The front side member according to claim 5, wherein the thickness of the upper cross plate is the same as that of the lower cross plate. 8. The front longitudinal beam according to claim 2, characterized in that, the front longitudinal beam further comprises a front longitudinal beam inner reinforcement, and the front longitudinal beam inner reinforcement is fixedly connected in the lowermost sub-cavity , the internal reinforcement of the front longitudinal beam is provided with a threaded pipe extending along the height direction of the rectangular frame, and the position corresponding to the threaded pipe on the lower horizontal plate is provided with a threaded pipe communicating with the inner hole of the threaded pipe first via. 9. The front side beam according to claim 8, characterized in that, positioning holes are also provided on the inner reinforcement of the front side beam, and positions corresponding to the positioning holes on the lower transverse plate are provided with The positioning hole communicates with the second through hole. 10. The front longitudinal beam according to claim 8, characterized in that, the outer longitudinal plate is provided with a first welding hole for welding the inner reinforcement of the front longitudinal beam to the outer longitudinal plate, and the inner The longitudinal plate is provided with a second welding hole for welding the inner reinforcement of the front longitudinal beam to the inner longitudinal plate. 11. An automobile, characterized by comprising the front side member according to any one of claims 1-10.