Lightweight threshold stiffening beam of automobile

Abstract

The utility model relates to the technical field of doorsills, in particular to an automobile light-weight doorsill stiffening beam which comprises a doorsill, a first reinforcing block and a second reinforcing block are arranged on the lower side in the doorsill, a first energy absorption block is arranged between the first reinforcing block and the second reinforcing block, and a buffering energy absorption assembly is arranged on the upper side in the doorsill. A plurality of reinforcing ribs are arranged on the two sides of the doorsill, and a dustproof strip is arranged between every two adjacent reinforcing ribs. The reinforcing ribs are arranged, the two sides of the upper portion of the doorsill are stressed by the upper portion, deformation of the doorsill is prevented through the reinforcing effect of the reinforcing ribs, and the service life of the automobile doorsill reinforcing beam is prolonged; meanwhile, the dustproof strips are arranged between every two adjacent reinforcing ribs, the dustproof strips are limited by the two reinforcing ribs and are not prone to falling off, it is guaranteed that the dustproof strips protect the paint surface for a long time, and the service life of the paint surface is prolonged. And the first energy absorption block and the third energy absorption block are arranged, so that the impact force is weakened, and the anti-collision performance is high.

Description

Technical Field

[0001] The utility model relates to the technical field of sills, in particular to a lightweight sill reinforcement beam for automobiles. Background Art

[0002] In the structural design of automobiles, the crossbeam under the door is an important safety component, which is usually called the sill beam or sill panel. This component is located under the door and connects the A-pillar and C-pillar of the vehicle, playing a role in supporting the vehicle body and enhancing the structural strength.

[0003] For example, the authorized announcement number "CN213974202U" is a kind of automobile sill beam structure. Although by setting a square tube, a support plate and a support rod, the support plate is fixedly connected to the outer wall of the square tube, and the top of the support rod is fixedly connected to the bottom of the support plate, the installed support plate is installed inside the cavity and fixedly connected to the inner wall of the cavity. The circuit is inserted from one end of the square tube, passed out from the other end and connected to the inside of the B-pillar, so that the circuit will not be exposed inside the cavity, preventing water from penetrating into the sill when the sill is cleaned and causing damage to the circuit, thus shortening the service life of the circuit. However, the upper sides of both sides of the sill are easily subjected to the pressure from above, resulting in the deformation of the sill and affecting the service life of the automobile sill; at the same time, the dustproof strip is easily detached, failing to protect the paint surface and reducing the service life of the paint surface. The sill reinforcement beam is not provided with a buffer anti-collision device, and the anti-collision performance is poor. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose a lightweight sill reinforcement beam for automobiles.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] Design a lightweight sill reinforcement beam for automobiles, including a sill. A first reinforcement block and a second reinforcement block are arranged on the lower side inside the sill. The first reinforcement block and the second reinforcement block are slidably connected. A first energy-absorbing block is arranged between the first reinforcement block and the second reinforcement block. A buffer energy-absorbing component is arranged on the upper side inside the sill. A first waterproof foam is arranged between the first reinforcement block and the buffer energy-absorbing component. A square tube is arranged inside the buffer energy-absorbing component. A plurality of reinforcing ribs are arranged on both sides of the sill. A dustproof strip is arranged between adjacent two reinforcing ribs. A groove is arranged on the upper surface of the sill. A protective strip is arranged on the lower inner wall of the groove.

[0007] Preferably, the buffer energy-absorbing component includes two third reinforcement blocks. A second energy-absorbing block is arranged between the two third reinforcement blocks. A third energy-absorbing block is arranged inside the two third reinforcement blocks and the second energy-absorbing block. The square tube is arranged inside the third energy-absorbing block.

[0008] Preferably, an extension block is annularly arranged inside the surface of one side of the first reinforcing block close to the second reinforcing block. The outer contour dimension of the extension block matches the inner wall contour dimension of the second reinforcing block. On both the upper and lower sides of the surface of one side of the first reinforcing block close to the second reinforcing block, a plurality of cross grooves are provided. On both the upper and lower sides of the surface of one side of the second reinforcing block close to the first reinforcing block, a plurality of cross blocks are provided. The plurality of cross blocks correspond to the plurality of cross grooves one by one. The cross blocks match the cross grooves, and one end of the cross block extends into the cross groove.

[0009] Preferably, a plurality of first positioning grooves are provided on both surfaces of the threshold. On the surface of one side of the plurality of dust-proof strips close to the threshold, a plurality of first positioning blocks are provided. The plurality of first positioning blocks correspond to the plurality of first positioning grooves one by one. The first positioning blocks match the first positioning grooves, and one end of the first positioning block extends into the first positioning groove.

[0010] Preferably, a second positioning groove is provided on the lower inner wall of the groove. A second positioning block is provided on the lower surface of the protective strip. One end of the second positioning block extends into the second positioning groove.

[0011] Preferably, a second waterproof foaming adhesive is provided between the lower inner wall of the threshold and the lower surface of the first reinforcing block.

[0012] The beneficial effects of the lightweight threshold reinforcing beam of the present utility model are as follows: The reinforcing ribs are provided. When the upper two sides of the threshold are subjected to pressure from above, through the reinforcing effect of the reinforcing ribs, the deformation of the threshold is prevented, and the service life of the automobile threshold reinforcing beam is increased. At the same time, a dust-proof strip is provided between two adjacent reinforcing ribs. The dust-proof strip is limited by the two reinforcing ribs and is not easily detached, ensuring that the dust-proof strip protects the paint surface for a long time and extending the service life of the paint surface. The first energy-absorbing block is provided. The first energy-absorbing block is fixed by the first reinforcing block and the second reinforcing block. When the threshold reinforcing beam is impacted, through the sliding connection between the first reinforcing block and the second reinforcing block, the first energy-absorbing block plays a buffering role. At the same time, the buffer energy-absorbing assembly is provided. The third energy-absorbing block is fixed by two third reinforcing blocks and the second energy-absorbing block. When the threshold reinforcing beam is impacted, the two third reinforcing blocks are in buffer connection with the second energy-absorbing block, so that the third energy-absorbing block plays a buffering role. In summary, the first energy-absorbing block and the third energy-absorbing block are provided, which can weaken the impact force and have strong anti-collision performance. Description of the Drawings

[0013] Figure 1 It is the front view cross-sectional view of the present utility model;

[0014] Figure 2 It is the structural schematic diagram of the installation relationship among the threshold, the reinforcing ribs, the dust-proof strip and the protective strip of the present utility model;

[0015] Figure 3Structural schematic diagram of the installation relationship between the first strengthening block and the second strengthening block of the present utility model;

[0016] Figure 4 Enlarged view of position A of the present utility model.

[0017] In the figure: threshold 1, first strengthening block 2, second strengthening block 3, first energy-absorbing block 4, first waterproof foaming glue 5, square tube 6, reinforcing rib 7, dust-proof strip 8, groove 9, protective strip 10, third strengthening block 11, second energy-absorbing block 12, third energy-absorbing block 13, extension block 14, cross slot 15, cross block 16, first positioning slot 17, first positioning block 18, second positioning slot 19, second positioning block 20, second waterproof foaming glue 21. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0019] Referring to Figures 1-4 , the lightweight threshold strengthening beam of an automobile includes a threshold 1. A first strengthening block 2 and a second strengthening block 3 are provided on the lower side inside the threshold 1. The first strengthening block 2 and the second strengthening block 3 are slidably connected. A first energy-absorbing block 4 is provided between the first strengthening block 2 and the second strengthening block 3. The first energy-absorbing block 4 is made of carbon fiber resin. A buffer energy-absorbing component is provided on the upper side inside the threshold 1. A first waterproof foaming glue 5 is provided between the first strengthening block 2 and the buffer energy-absorbing component. A square tube 6 is provided inside the buffer energy-absorbing component, and hidden wires are provided inside the square tube 6. A plurality of reinforcing ribs 7 are provided on both sides of the threshold 1. When the upper sides of both sides of the threshold 1 are subjected to upward pressure, through the reinforcement of the reinforcing ribs 7, the deformation of the threshold is prevented, and the service life of the automobile threshold strengthening beam is increased. A dust-proof strip 8 is provided between adjacent two reinforcing ribs 7. The dust-proof strip 8 is limited by the two reinforcing ribs 7 and is not easily detached, ensuring that the dust-proof strip 8 protects the paint surface for a long time and extends the service life of the paint surface. A groove 9 is provided on the upper surface of the threshold 1, and a protective strip 10 is provided on the lower inner wall of the groove 9. The protective strip 10 is convenient for replacement and plays a protective role.

[0020] The buffer energy-absorbing component includes two third strengthening blocks 11. A second energy-absorbing block 12 is provided between the two third strengthening blocks 11. The second energy-absorbing block 12 is made of foam aluminum strip. A third energy-absorbing block 13 is provided inside the two third strengthening blocks 11 and the second energy-absorbing block 12. The third energy-absorbing block 13 is made of carbon fiber resin. The square tube 6 is provided inside the third energy-absorbing block 13.

[0021] On the inner side of the surface of the first reinforcing block 2 close to the second reinforcing block 3, an extension block 14 is annularly provided. The outer contour dimensions of the extension block 14 match the inner wall contour dimensions of the second reinforcing block 3. On both the upper and lower sides of the surface of the first reinforcing block 2 close to the second reinforcing block 3, a plurality of cross grooves 15 are provided. On both the upper and lower sides of the surface of the second reinforcing block 3 close to the first reinforcing block 2, a plurality of cross blocks 16 are provided. The plurality of cross blocks 16 correspond to the plurality of cross grooves 15 one by one. The cross blocks 16 match the cross grooves 15, and one end of the cross block 16 extends into the cross groove 15. When the threshold 1 is impacted, the first energy absorption block 4 can play a buffering role by the sliding of the cross block 16 in the cross groove 15.

[0022] On both side surfaces of the threshold 1, a plurality of first positioning grooves 17 are provided. On the side surface of the plurality of dust-proof strips 8 close to the threshold 1, a plurality of first positioning blocks 18 are provided. The plurality of first positioning blocks 18 correspond to the plurality of first positioning grooves 17 one by one. The first positioning blocks 18 match the first positioning grooves 17, and one end of the first positioning block 18 extends into the first positioning groove 17. By providing the first positioning grooves 17 and the first positioning blocks 18, it is convenient to position and install the dust-proof strips 8 and also prevent the dust-proof strips 8 from falling off.

[0023] On the lower inner wall of the groove 9, a second positioning groove 19 is provided. On the lower surface of the protective strip 10, a second positioning block 20 is provided. One end of the second positioning block 20 extends into the second positioning groove 19. By providing the groove 9 and the second positioning block 20, it is convenient to position and install the protective strip 10 and also prevent the protective strip 10 from falling off.

[0024] Between the lower inner wall of the threshold 1 and the lower surface of the first reinforcing block 2, a second waterproof foaming adhesive 21 is provided. The second waterproof foaming adhesive 21 plays a waterproof role and prevents water from entering the first energy absorption block 4.

[0025] Working principle: The provided first energy absorption block 4 is fixed by the first reinforcing block 2 and the second reinforcing block 3. When the threshold reinforcing beam is impacted, through the sliding connection of the first reinforcing block 2 and the second reinforcing block 3, the first energy absorption block 4 plays a buffering role; at the same time, the provided buffer energy absorption assembly fixes the third energy absorption block 13 through the two third reinforcing blocks 11 and the second energy absorption block 12. When the threshold reinforcing beam is impacted, the two third reinforcing blocks 11 are buffer-connected with the second energy absorption block 12, so that the third energy absorption block 13 plays a buffering role; in summary, the provided first energy absorption block 4 and the third energy absorption block 13 play a role in weakening the impact force and have strong anti-collision performance.

[0026] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent replacements or changes, shall be covered by the protection scope of the present utility model.

Claims

1. An automotive lightweight sill reinforcement beam, including a sill (1), characterized in that, A first reinforcing block (2) and a second reinforcing block (3) are provided on the lower side inside the threshold (1). The first reinforcing block (2) and the second reinforcing block (3) are slidably connected. A first energy-absorbing block (4) is provided between the first reinforcing block (2) and the second reinforcing block (3). A buffer energy-absorbing assembly is provided on the upper side inside the threshold (1). A first waterproof foam (5) is provided between the first reinforcing block (2) and the buffer energy-absorbing assembly. A square tube (6) is provided inside the buffer energy-absorbing assembly. A plurality of reinforcing ribs (7) are provided on both sides of the threshold (1). A dust-proof strip (8) is provided between adjacent two reinforcing ribs (7). A groove (9) is provided on the upper surface of the threshold (1). A protective strip (10) is provided on the lower inner wall of the groove (9).

2. The lightweight threshold reinforcing beam for an automobile according to claim 1, wherein The buffer energy-absorbing assembly includes two third reinforcing blocks (11). A second energy-absorbing block (12) is provided between the two third reinforcing blocks (11). A third energy-absorbing block (13) is provided inside the two third reinforcing blocks (11) and the second energy-absorbing block (12). The square tube (6) is arranged inside the third energy-absorbing block (13).

3. The lightweight threshold reinforcing beam for an automobile according to claim 1, wherein An extension block (14) is annularly provided on the inner side of the surface of the first reinforcing block (2) close to the second reinforcing block (3). The outer contour dimension of the extension block (14) matches the inner wall contour dimension of the second reinforcing block (3). A plurality of cross grooves (15) are provided on both the upper and lower sides of the surface of the first reinforcing block (2) close to the second reinforcing block (3). A plurality of cross blocks (16) are provided on both the upper and lower sides of the surface of the second reinforcing block (3) close to the first reinforcing block (2). The plurality of cross blocks (16) correspond to the plurality of cross grooves (15) one by one. The cross block (16) matches the cross groove (15). One end of the cross block (16) extends into the cross groove (15).

4. The lightweight threshold reinforcing beam for an automobile according to claim 1, characterized in that, A plurality of first positioning grooves (17) are provided on both surfaces of the threshold (1). A plurality of first positioning blocks (18) are provided on the surface of the plurality of dust-proof strips (8) close to the threshold (1). The plurality of first positioning blocks (18) correspond to the plurality of first positioning grooves (17) one by one. The first positioning block (18) matches the first positioning groove (17). One end of the first positioning block (18) extends into the first positioning groove (17).

5. The lightweight threshold reinforcing beam for an automobile according to claim 1, wherein, A second positioning groove (19) is provided on the lower inner wall of the groove (9). A second positioning block (20) is provided on the lower surface of the protective strip (10). One end of the second positioning block (20) extends into the second positioning groove (19).

6. The lightweight threshold reinforcement beam for an automobile according to claim 1, characterized in that A second waterproof foam (21) is provided between the lower inner wall of the threshold (1) and the lower surface of the first reinforcing block (2).

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