Prestressed automobile front bumper

Abstract

The utility model relates to the technical field of automobile bumpers, in particular to a prestress automobile front bumper which comprises a bumper body, a support is arranged on one side of the bumper body, a plurality of mounting holes are formed in the support, four inserting columns arranged in a rectangular array are fixed to the support, and the ends, away from the support, of the four inserting columns are all sleeved with clamping sleeves. The four inserting columns are all sleeved with prestressed springs, check blocks are fixed to the two sides of the four clamping sleeves, an air spring is fixed to the side wall, away from the bumper body, of each check block, four dampers arranged in a rectangular array mode are fixed to the support, and connecting blocks are fixed to the ends, away from the support, of the four clamping sleeves and the dampers. Eight clamping blocks are integrally formed on the inner side of the bumper body, and clamping grooves matched with the connecting blocks are formed in the side walls, close to the connecting blocks, of the eight clamping blocks; damping is conducted through the prestressed springs, damping is conducted again through the air springs, the dampers can prevent springback after elastic damping, and the protection effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile bumpers, in particular to a prestressed automobile front bumper. Background Art

[0002] Automobile bumpers are safety devices that absorb and mitigate external impacts, protecting the front and rear of the vehicle. They are typically made of plastic, often referred to as plastic bumpers. A typical plastic bumper consists of three components: an outer panel, a cushioning material, and a crossbeam. The outer panel and cushioning material are made of plastic, while the crossbeam is stamped from cold-rolled sheet metal into a U-shaped groove. The outer panel and cushioning material are attached to the crossbeam. However, cushioning materials offer limited protection for vehicles, as they cannot utilize prestressing forces and buffering space to offset and dissipate the force of a vehicle impact. Therefore, a prestressed front bumper has been proposed to improve protection. Utility Model Content

[0003] In view of the problems in the prior art, the utility model provides a prestressed automobile front bumper.

[0004] The technical solution adopted by the utility model to solve its technical problems is a prestressed automobile front bumper, including a bumper body, a support is provided on one side of the bumper body, a plurality of mounting holes are opened on the support, four plug posts arranged in a rectangular array are fixed on the support, the four ends of the plug posts away from the support are all covered with clamping sleeves, the four plug posts are all covered with prestressed springs, blocks are fixed on both sides of the four clamping sleeves, each of the side walls of the block away from the bumper body is fixed with an air spring, and the side walls of the multiple air springs away from the block are connected to the support, four dampers arranged in a rectangular array are fixed on the support, the ends of the four clamping sleeves and the dampers away from the support are fixed with connecting blocks, eight blocks are integrally formed on the inner side of the bumper body, the side walls of the eight blocks close to the connecting blocks are all provided with card grooves adapted to the connecting blocks, and each of the connecting blocks is provided with limit members on both sides.

[0005] By adopting the above technical solution, after the bumper body is impacted, the bumper body pushes the blocking block to move toward the support, the blocking block pushes the connecting block to move toward the support, the connecting block squeezes the sleeve, and the sleeve moves toward the support, and shock absorption is performed by the prestressed spring. When the block moves with the sleeve, it squeezes the air spring, and shock absorption is performed again by the air spring. The damper can prevent rebound after elastic shock absorption, thereby improving the protection effect.

[0006] Specifically, the limiting member includes a limiting block, a guide rod and an insert block. The limiting block is connected to the connecting block. A through hole adapted to the guide rod is provided on the limiting block. A T-shaped insert block is fixed to one end of the guide rod close to the card block. A reset spring is provided on the guide rod. Each of the card blocks has two slots for inserting the ends of the insert block.

[0007] By adopting the above technical solution, when the bumper body needs to be replaced, the guide rod is pulled, and the guide rod drives the insert block to move away from the card block, and the end of the insert block is disengaged from the slot on the side wall of the card block. The bumper body is slid toward the ground, and the bumper body together with the card block can be removed and replaced. There is no need to replace the limit parts, connecting blocks and other components other than the bumper body and the card block, which saves replacement costs.

[0008] Specifically, a pull ring is fixed on one end of the guide rod away from the insert block.

[0009] By adopting the above technical solution, the setting of the pull ring is conducive to pulling the guide rod.

[0010] Specifically, two first buffer pads are fixed on the inner side of the bumper body, and two second buffer pads are fixed on the side of the support close to the bumper body.

[0011] By adopting the above technical solution, the provision of the first buffer pad and the second buffer pad can protect the side of the bumper body close to the support.

[0012] Specifically, a plurality of reinforcing ribs are integrally formed on the inner side of the bumper body.

[0013] By adopting the above technical solution and setting the reinforcing ribs, the strength of the bumper body can be improved.

[0014] Beneficial effects of the utility model:

[0015] (1) The utility model describes a prestressed automobile front bumper. After the bumper body is impacted, the bumper body pushes the clamping block to move toward the support. The clamping block pushes the connecting block to move toward the support. The connecting block squeezes the clamping sleeve, and the clamping sleeve moves toward the support. Shock absorption is performed by the prestressed spring. When the block moves with the clamping sleeve, it squeezes the air spring, and shock absorption is performed again by the air spring. The damper can prevent the occurrence of rebound after elastic shock absorption, thereby improving the protection effect.

[0016] (2) The utility model discloses a prestressed automobile front bumper. When the bumper body needs to be replaced, the guide rod is pulled, and the guide rod drives the insert block to move away from the clamping block. The end of the insert block is disengaged from the slot on the side wall of the clamping block. The bumper body is slid toward the ground, and the bumper body together with the clamping block can be removed and replaced. There is no need to replace the limiter, connecting block and other parts other than the bumper body and the clamping block, thereby saving replacement costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 It is a top view of the utility model;

[0019] Figure 2 This is a cross-sectional view of the combination of the plug post and the ferrule of the utility model;

[0020] Figure 3 For the utility model Figure 1 A magnified view of the structure in the middle.

[0021] In the figure: 1. Bumper body; 2. Stop block; 3. Support; 4. Insert column; 5. Damper; 6. Air spring; 7. Prestressed spring; 8. Limiting piece; 9. Clamping sleeve; 10. Connecting block; 11. Block; 12. Reinforcing rib; 13. First buffer pad; 14. Second buffer pad; 15. Limiting block; 16. Guide rod; 17. Return spring; 18. Insert block; 19. Pull ring. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] In order to improve the protection effect, as an embodiment of the present invention, Figure 1 、 Figure 2 As shown, the utility model of a prestressed automobile front bumper comprises a bumper body 1, a support 3 is provided on one side of the bumper body 1, a plurality of mounting holes are opened on the support 3, four rectangular array-arranged plug posts 4 are fixed on the support 3 by bolts, the ends of the four plug posts 4 away from the support 3 are all sleeved with a clamping sleeve 9, the four plug posts 4 are all sleeved with a prestressed spring 7, and both sides of the four clamping sleeves 9 are welded and fixed with a block 2, and each of the block 2 is fixed to the side wall away from the bumper body 1 by a bolt. An air spring 6 is fixed, and the side walls of the multiple air springs 6 away from the block 2 are connected to the support 3 by bolts. Four dampers 5 arranged in a rectangular array are fixed on the support 3 by bolts. The four sleeves 9 and the ends of the dampers 5 away from the support 3 are welded and fixed with a connecting block 10. Eight blocks 11 are integrally formed on the inner side of the bumper body 1. The side walls of the eight blocks 11 close to the connecting block 10 are provided with slots adapted to the connecting block 10, and each of the connecting blocks 10 is provided with a limiter 8 on both sides.

[0024] During use, the support 3 is fixed to the car with bolts. After the bumper body 1 is impacted, the bumper body 1 pushes the clamping block 11 to move toward the support 3, and the clamping block 11 pushes the connecting block 10 to move toward the support 3. The connecting block 10 squeezes the clamping sleeve 9, and the clamping sleeve 9 moves toward the support 3, and the prestressed spring 7 is used for shock absorption. When the block 2 moves with the clamping sleeve 9, it squeezes the air spring 6, and the air spring 6 is used for shock absorption again. The damper 5 can prevent rebound after elastic shock absorption, thereby improving the protection effect.

[0025] In order to facilitate the disassembly and replacement of the bumper body 1 and save the replacement cost, for example, Figure 1 、 Figure 3 As shown, the limit member 8 includes a limit block 15, a guide rod 16 and an insert block 18. The limit block 15 is welded to the connecting block 10. A through hole adapted to the guide rod 16 is provided on the limit block 15. A T-shaped insert block 18 is welded and fixed to one end of the guide rod 16 close to the clamping block 11. A return spring 17 is sleeved on the guide rod 16. Each of the clamping blocks 11 is provided with two slots for inserting the ends of the insert block 18.

[0026] When the bumper body 1 needs to be replaced, pull the guide rod 16, and the guide rod 16 drives the insert block 18 to move away from the block 11. The end of the insert block 18 is disengaged from the slot on the side wall of the block 11. Slide the bumper body 1 toward the ground and the bumper body 1 together with the block 11 can be removed and replaced. There is no need to replace the limit piece 8, connecting block 10 and other components other than the bumper body 1 and the block 11, saving replacement costs.

[0027] In order to facilitate pulling the guide rod 16, for example, Figure 3 As shown, a pull ring 19 is welded and fixed to one end of the guide rod 16 away from the insert block 18 .

[0028] In order to protect the side of the bumper body 1 close to the support 3, for example, Figure 1 As shown, two first buffer pads 13 are fixed to the inner side of the bumper body 1 by adhesive, and two second buffer pads 14 are fixed to the side of the support 3 close to the bumper body 1 by adhesive.

[0029] In order to improve the strength of the bumper body 1, for example, Figure 1 As shown, a plurality of reinforcing ribs 12 are integrally formed on the inner side of the bumper body 1 .

[0030] When the utility model is in use, the support 3 is fixed to the car by bolts. After the bumper body 1 is impacted, the bumper body 1 pushes the clamping block 11 to move toward the support 3, and the clamping block 11 pushes the connecting block 10 to move toward the support 3. The connecting block 10 squeezes the clamping sleeve 9, and the clamping sleeve 9 moves toward the support 3. Shock absorption is performed by the prestressed spring 7. When the block 2 moves with the clamping sleeve 9, the air spring 6 is squeezed, and shock absorption is performed again by the air spring 6. The damper 5 can prevent the occurrence of rebound after elastic shock absorption, thereby improving the protection effect.

[0031] When the bumper body 1 needs to be replaced, pull the pull ring 19, and the guide rod 16 drives the insert block 18 to move away from the block 11. The end of the insert block 18 is disengaged from the slot on the side wall of the block 11. Slide the bumper body 1 toward the ground and the bumper body 1 together with the block 11 can be removed and replaced. There is no need to replace the limit piece 8, connecting block 10 and other components other than the bumper body 1 and the block 11, saving replacement costs.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions in the specification are only for the purpose of illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and improvements, and such changes and improvements fall within the scope of protection claimed by the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents. Any matters not described in detail in the present invention belong to the prior art known to those skilled in the art.

Claims

1. A prestressed automobile front bumper, characterized in that: The invention comprises a bumper body (1), a support (3) is provided on one side of the bumper body (1), a plurality of mounting holes are provided on the support (3), four plug-in columns (4) arranged in a rectangular array are fixed on the support (3), the ends of the four plug-in columns (4) away from the support (3) are sleeved with a clamping sleeve (9), the four plug-in columns (4) are sleeved with a prestressed spring (7), both sides of the four clamping sleeves (9) are fixed with a stopper (2), and the side wall of each stopper (2) away from the bumper body (1) is fixed with an air spring (6), and multiple The side walls of the air spring (6) away from the block (2) are connected to the support (3), four dampers (5) arranged in a rectangular array are fixed on the support (3), and the four clamping sleeves (9) and the ends of the dampers (5) away from the support (3) are fixed with a connecting block (10). Eight clamping blocks (11) are integrally formed on the inner side of the bumper body (1), and the side walls of the eight clamping blocks (11) close to the connecting block (10) are provided with a clamping groove adapted to the connecting block (10), and each of the connecting blocks (10) is provided with a limiting piece (8) on both sides.

2. A prestressed automobile front bumper according to claim 1, characterized in that: The limiting member (8) comprises a limiting block (15), a guide rod (16) and an inserting block (18); the limiting block (15) is connected to the connecting block (10); a through hole adapted to the guide rod (16) is provided on the limiting block (15); a T-shaped inserting block (18) is fixed to one end of the guide rod (16) close to the clamping block (11); a return spring (17) is sleeved on the guide rod (16); and each of the clamping blocks (11) is provided with two slots for inserting the ends of the inserting block (18).

3. A prestressed automobile front bumper according to claim 2, characterized in that: A pull ring (19) is fixed to one end of the guide rod (16) away from the inserting block (18).

4. The prestressed automobile front bumper according to claim 1, characterized in that: Two first buffer pads (13) are fixed on the inner side of the bumper body (1), and two second buffer pads (14) are fixed on the side of the support (3) close to the bumper body (1).

5. The prestressed automobile front bumper according to claim 1, characterized in that: A plurality of reinforcing ribs (12) are integrally formed on the inner side of the bumper body (1).

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