Automobile bumper

Abstract

The utility model discloses an automobile bumper which comprises a three-stage buffering mechanism, the three-stage buffering mechanism comprises a honeycomb buffering layer, a lower connecting plate is fixedly connected below the honeycomb buffering layer through bolts, a spring shock absorber is fixedly connected below the lower connecting plate, an energy absorption box is fixedly connected to the tail end of the spring shock absorber, and the energy absorption box is fixedly connected to the tail end of the energy absorption box. A plurality of composite steel and a plurality of soft steel are alternately stacked in the energy absorption box, and the energy absorption box has the advantages of being high in practicability and capable of absorbing impact energy in a multi-level mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile parts, specifically is a kind of automobile bumper. BACKGROUND

[0002] As an important automobile safety device, automobile bumper has the effect of absorbing and reducing external impact force, protecting the front and rear of vehicle body safety, at present, automobile bumper on market is usually combined by shell, safety beam and damping device.

[0003] In prior art, traditional automobile bumper often uses single energy-absorbing structure, impact energy cannot be hierarchical, leading to energy-absorbing structure saturation too early, which cannot effectively protect vehicle body structure.

[0004] Therefore, it is necessary to design a kind of automobile bumper which has strong practicability and can absorb impact energy in multiple levels. INVENTION CONTENTS

[0005] The utility model discloses a kind of automobile bumpers to solve the problems raised in the above background.

[0006] To solve the above technical problems, the utility model provides the following technical scheme: a kind of automobile bumper, including shell, upper locking mechanism, lower locking mechanism, three-stage buffer mechanism, characterized by: the three-stage buffer mechanism includes honeycomb buffer layer, the lower bolt fixedly connected with the lower connecting plate of honeycomb buffer layer, the lower connecting plate is fixedly connected spring shock absorber, the end of spring shock absorber is fixedly connected energy-absorbing box, the inside of energy-absorbing box is alternately stacked with several composite steels and several soft steels, realize multiple levels absorption impact energy, can effectively improve the collision safety of vehicle.

[0007] According to the above technical scheme, the inside of shell is provided with ladder groove, U-shaped reinforcing beam is fixedly installed in the inside of ladder groove.

[0008] According to the above technical scheme, the upper locking mechanism includes support body, the support body is fixedly installed below U-shaped reinforcing beam, positioning groove is set up in the left and right sides of support body, spring is coaxially placed in the positioning groove, lock catch is coaxially placed in the positioning groove, and each group of spring sleeve is arranged on the outside of lock catch.

[0009] According to the above technical scheme, the lower locking mechanism is coaxially arranged on the inner side of support body, and the lower locking mechanism includes upper cone, the bottom is fixedly installed on the lower side of upper cone, and the upper connecting plate is fixedly installed on the lower side of bottom.

[0010] According to the above technical scheme, the lock catch is provided with guide inclined surface inclined to the central axis of support body.

[0011] According to the above technical scheme, the structural edges of the upper and lower surfaces of the honeycomb buffer layer are pre-buried with nuts. The energy absorption box is fixedly installed on the vehicle body.

[0012] Compared with the prior art, the utility model has the advantages that: the utility model, through the three-stage buffer mechanism, can absorb impact energy in multiple stages in vehicle collision, and can effectively improve the collision safety of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0013] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute a limitation on the utility model. In the drawings:

[0014] Figure 1 It is the overall structure schematic view of the utility model;

[0015] Figure 2 It is the upper locking mechanism and lower locking mechanism structure schematic view of the utility model;

[0016] Figure 3 It is the energy absorption box sectional view of the utility model;

[0017] Figure 4 It is the lower locking mechanism installation schematic view of the utility model;

[0018] Figure 5 It is the upper locking mechanism installation schematic view of the utility model;

[0019] Figure 6 It is the axial limit structure schematic view of the utility model;

[0020] In the drawing: 1, shell; 2, U-shaped reinforcing beam; 3, upper connecting plate; 4, honeycomb buffer layer; 5, lower connecting plate; 6, spring shock absorber; 7, energy absorption box; 8, composite steel; 9, soft steel; 10, support body; 11, spring; 12, lock catch; 13, upper cone; 14, base. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1-6The utility model provides technical scheme: a car bumper, including shell 1, the inside of shell 1 is set up with the ladder groove, the inside fixed mounting of ladder groove has U type reinforcing beam 2, the lower portion of U type reinforcing beam 2 is along the axial interval fixed mounting and has a number of upper locking mechanism.

[0023] Each group upper locking mechanism includes support body 10, support body 10 fixed mounting is in the lower portion of U type reinforcing beam 2, and the left and right two side surfaces of support body 10 are set up with the locating groove, and the locating groove is coaxially placed with spring 11, and the locating groove is coaxially placed with lock catch 12, and each group spring 11 is set in the outside of lock catch 12, and the inside of support body 10 is coaxially provided with lower locking mechanism.

[0024] Lower locking mechanism includes upper cone body 13, and the lower portion of upper cone body 13 is fixedly installed with base 14, and the lower portion of base 14 is fixedly installed with upper connecting plate 3.

[0025] The lower portion of upper connecting plate 3 is boltedly connected with three-stage buffer mechanism, and three-stage buffer mechanism includes honeycomb buffer layer 4, and the lower portion of honeycomb buffer layer 4 is boltedly connected with lower connecting plate 5, and the lower portion of lower connecting plate 5 is fixedly connected with spring shock absorber 6, and the end of spring shock absorber 6 is fixedly connected with energy absorption box 7, and the inside of energy absorption box 7 is alternately laminated with a plurality of composite steel 8 and a plurality of mild steel 9.

[0026] Lock catch 12 is set up with the guide inclined plane that inclines to the central axis direction of support body 10.

[0027] The structural edges of both sides of honeycomb buffer layer 4 are pre-buried with nuts.

[0028] Energy absorption box 7 is fixedly installed on the car body.

[0029] Working principle:

[0030] When shell 1 collides, shell 1 absorbs part of impact force through the elastic deformation of itself, and the remaining impact force is transmitted to U type reinforcing beam 2 through the ladder groove inside shell 1, and U type reinforcing beam 2 disperses the impact force to the two sides of the car body by using the transverse rigidity, thereby reducing stress concentration.

[0031] U type reinforcing beam 2 transmits the impact force to support body 10, and the impact force pushes U type reinforcing beam 2 to move transversely to the direction of the car body, and U type reinforcing beam 2 drives support body 10 to move transversely to the direction of the car body, and support body 10 drives lock catch 12 to move transversely, and the inner end inclined surface of lock catch 12 contacts the outer surface of upper cone body 13 to generate radial force, and the radial force drives lock catch 12 to move outward along the radial direction against the elastic force of spring 11, and when lock catch 12 passes the maximum radial protruding part of upper cone body 13, spring 11 releases the elastic potential energy, drives lock catch 12 to reset radially, and after lock catch 12 resets, the upper end surface of lock catch 12 and the lower end surface of upper cone body 13 form axial limiting structure (such as Figure 6The mechanical interlocking is realized, and it is ensured that the impact force is transmitted in a directional manner to the three-stage buffering mechanism.

[0032] The impact force is transmitted to the base 14 through the upper cone 13, the base 14 transmits the impact force to the honeycomb buffering layer 4, the honeycomb buffering layer 4 uniformly disperses the impact force to each unit wall through elastic deformation, local overload is avoided, the upper and lower ends of the honeycomb buffering layer 4 are connected with the upper connecting plate 3 and the lower connecting plate 5 through bolts, the stability of the overall structure is maintained, and the remaining impact force is transmitted to the spring shock absorber 6 through the lower connecting plate 5.

[0033] It should be noted that the spring shock absorber is prior art, and will not be described in detail.

[0034] The spring shock absorber 6 transmits the remaining impact force to the energy absorption box 7, a plurality of composite steels 8 and a plurality of soft steels 9 are alternately stacked in the energy absorption box 7, the composite steel 8 provides high-strength support to prevent the energy absorption box 7 from being damaged prematurely as a whole, and the soft steel 9 absorbs the impact force through plastic deformation, energy is absorbed through multiple levels, and the collision safety performance of the vehicle is significantly improved.

[0035] It should be noted that, in this document, the terms such as first and second are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0036] Finally, it should be noted that: the above only describes preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, and for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A car bumper, comprising a housing (1), an upper locking mechanism, a lower locking mechanism, and a three-stage buffer mechanism, characterized in that: The three-stage buffer mechanism includes a honeycomb buffer layer (4), a lower connecting plate (5) is bolted to the bottom of the honeycomb buffer layer (4), a spring shock absorber (6) is fixedly connected to the bottom of the lower connecting plate (5), and an energy-absorbing box (7) is fixedly connected to the end of the spring shock absorber (6). The energy-absorbing box (7) has several composite steels (8) and several soft steels (9) alternately stacked inside.

2. The car bumper according to claim 1, characterized in that: The shell (1) has a stepped groove inside, and a U-shaped reinforcing beam (2) is fixedly installed inside the stepped groove.

3. A car bumper according to claim 1, characterized in that: The upper locking mechanism includes a support body (10), which is fixedly installed below the U-shaped reinforcing beam (2). The support body (10) has positioning grooves on its left and right sides. Springs (11) are placed coaxially in the positioning grooves, and buckles (12) are placed coaxially in the positioning grooves. Each set of springs (11) is set on the outside of the buckles (12).

4. A car bumper according to claim 3, characterized in that: The lower locking mechanism is coaxially disposed on the inner side of the support body (10). The lower locking mechanism includes an upper cone (13), a base (14) is fixedly installed below the upper cone (13), and an upper connecting plate (3) is fixedly installed below the base (14).

5. A car bumper according to claim 3, characterized in that: The latch (12) has a guide slope that is inclined toward the central axis of the support (10).

6. A car bumper according to claim 1, characterized in that: Nuts are pre-embedded on the structural edges of both the upper and lower sides of the honeycomb buffer layer (4), and the energy-absorbing box (7) is fixedly installed on the vehicle body.

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