CN219635147U - Telescopic front bumper beam assembly and automobile - Google Patents

Abstract

The utility model provides a telescopic front bumper beam assembly and an automobile, comprising: the front bumper beam comprises a connecting part positioned at the middle part, and a first fixing part and a second fixing part which extend outwards along the two ends of the connecting part; the lower ends of the first fixing part and the second fixing part are respectively provided with a buffer device with the same structure, and the buffer devices comprise hydraulic buffers and elastic parts sleeved on the upper parts of the hydraulic buffers; the top of two hydraulic damper passes through the mounting respectively and connects first fixed part and second fixed part, every hydraulic damper's bottom all is connected in automobile body panel beating through the connecting plate, elastomeric element's lower extreme and hydraulic damper butt, elastomeric element's upper end and mounting butt. The utility model absorbs energy through the elastic contraction of the buffer device, ensures that the automobile is reset through the elastic force of the elastic part during collision without replacement, and combines the collision buffer sleeve and the reinforcing beam to strengthen the buffer energy absorption, thereby better protecting the safety of personnel in the automobile.

Description

Telescopic front bumper beam assembly and automobile

Technical Field

The utility model relates to an automobile safety device, in particular to a telescopic front bumper beam assembly and an automobile.

Background

Along with the rapid development of the automobile industry, the safety performance of the automobile is more and more paid attention to by consumers, in the automobile industry, in order to enhance the safety performance of the automobile, a front bumper beam and an energy absorber are generally designed at the front part of the automobile body, so that the energy generated by collision is effectively absorbed when the automobile collides at a front low speed, the front main functional parts of the automobile are ensured to be used, the maintenance cost is reduced, the energy absorber can deform and absorb the energy when the automobile collides at a front high speed, the impact force on the longitudinal beam of the automobile body is reduced, and the safety of passengers is protected.

As the device that the first time of collision born the impact of vehicle front collision, current front bumper beam assembly usually comprises a front bumper beam, control two energy-absorbing boxes and two mounting panels that are connected with the longeron, the mounting panel passes through the bolt and is fixed with the automobile body longeron, front bumper beam and energy-absorbing box mainly pass through bolted connection or welding, energy-absorbing box and mounting panel welding, there is certain drawback in current strong bumper assembly when using, especially under the lower circumstances of the slower impact dynamics of speed, the bumper assembly is suffered and slightly bumps the harm and just needs to be changed whole assembly totally, and the front bumper beam assembly of aluminium system is adopted to the more middle-high-end car type in current market, whole replacement very big increases cost of maintenance, the waste of resources has been caused.

Disclosure of Invention

The utility model aims to provide a telescopic front bumper beam assembly, which is characterized in that a front bumper beam synchronously contracts along with contraction of a buffer device, the buffer device is used for absorbing energy, when a force disappears, the front bumper beam is reset through a spring component, and the bumper beam assembly does not need to be replaced, and the telescopic front bumper beam assembly comprises the following specific scheme:

the retractable front bumper beam assembly of the present utility model comprises:

the front bumper beam comprises a connecting part positioned at the middle part, and a first fixing part and a second fixing part which extend outwards along the two ends of the connecting part;

the lower ends of the first fixing part and the second fixing part are respectively provided with a buffer device with the same structure, and each buffer device comprises a hydraulic buffer and an elastic part sleeved on the upper part of the hydraulic buffer; the top of two hydraulic damper passes through the mounting respectively and connects first fixed part and second fixed part, every hydraulic damper's bottom all is connected in automobile body panel beating through the connecting plate, elastomeric element's lower extreme and hydraulic damper butt, elastomeric element's upper end and mounting butt.

Further, both ends below about the front bumper crossbeam all be provided with the collision buffer cover that the structure is the same between mounting and the connecting plate, every collision buffer cover is located buffer's outside, and it includes upper portion collision buffer cover and lower part collision buffer cover, upper portion collision buffer cover top fixed connection mounting, the upper end of lower part collision buffer cover is connected to the lower extreme of upper portion collision buffer cover to can do the reciprocating relative lower part collision buffer cover.

Further, each upper collision buffer sleeve is inserted into the lower collision buffer sleeve, the upper collision buffer sleeve and the lower collision buffer sleeve are identical in structure, and the cross section of each upper collision buffer sleeve is circular or polygonal.

Further, the upper collision buffer sleeve and the lower collision buffer sleeve are in clearance fit, and the clearance distance is 0.1-0.3mm.

Further, a reinforcing beam is connected between the lower collision buffer sleeves positioned at the lower ends of the first fixing part and the second fixing part.

Further, the fixing piece is a square plate, a polygonal plate or a circular plate.

Further, the hydraulic buffer comprises a hydraulic cylinder and a telescopic rod which is arranged above the hydraulic cylinder and can do telescopic displacement relative to the hydraulic cylinder, the elastic component is sleeved outside the telescopic rod, the bottom of the hydraulic cylinder is fixedly connected with the connecting plate, and the top of the telescopic rod is fixedly connected with the fixing piece.

Further, the elastic component is a spring.

An automobile comprises an automobile body metal plate, wherein the automobile body metal plate is fixedly provided with the telescopic front bumper beam assembly.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, by designing the telescopic buffer device, the front bumper beam is contracted along with the buffer device when the automobile collides at a low speed, energy is absorbed through the elastic component contracted by the device and the hydraulic buffer, when acting force disappears, the automobile is reset through the elastic force of the elastic component without replacement, and meanwhile, the buffer sleeve and the reinforcing beam are combined, so that the buffer energy absorption is enhanced, and the safety of personnel in the automobile is better protected.

Drawings

FIG. 1 is a schematic view of the overall structure of a retractable front bumper beam assembly;

FIG. 2 is a schematic elevational view of a retractable front bumper beam assembly;

FIG. 3 is a cross-sectional view of A-A of FIG. 2;

FIG. 4 is a schematic structural view of a crash cushion;

in the figure:

1. a front bumper beam;

101. a connection part;

102. a first fixing portion;

103. a second fixing portion;

104. a reinforcing plate;

2. a buffer device;

21. a hydraulic buffer;

211. a hydraulic cylinder;

212. a telescopic rod;

22. an elastic member;

221. a spring;

3. a fixing member;

4. a connecting plate;

5. a collision buffer sleeve;

51. an upper collision buffer sleeve;

52. a lower collision buffer sleeve;

6. and (5) reinforcing the beam.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in further detail below with reference to fig. 1 to 4, and it should be apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present utility model, these descriptions should not be limited to these terms. These terms are only used to distinguish one from another. For example, a first may also be referred to as a second, and similarly, a second may also be referred to as a first, without departing from the scope of embodiments of the utility model.

A retractable front bumper beam assembly, comprising:

the front bumper beam 1 is in an omega-shaped hollow structure, a reinforcing plate 104 is arranged at the inner center along the length direction, and the front bumper beam 1 comprises a connecting part 101 positioned at the middle part, and a first fixing part 102 and a second fixing part 103 which extend outwards along the left end and the right end of the connecting part 101;

the lower ends of the first fixing part 102 and the second fixing part 103 are respectively provided with a buffer device 2 with the same structure, and the buffer devices 2 comprise a hydraulic buffer 21 and an elastic part 22 sleeved on the upper part of the hydraulic buffer 21; the top of every hydraulic buffer 21 all passes through mounting 3 and connects first fixed part 102 and second fixed part 103, and every hydraulic buffer 21's bottom all is connected in the automobile body panel beating through connecting plate 4, the lower extreme and the middle part shoulder surface butt of hydraulic buffer 21 of elastomeric element 22, the upper end and the mounting 3 butt of elastomeric element 22.

The telescopic buffer device 2 ensures that the front bumper beam 1 contracts along with the buffer device 2 when the automobile collides at a low speed, and absorbs energy through the elastic component 22 and the hydraulic buffer 21, and when acting force disappears, the automobile is reset through the elastic force of the elastic component 22, so that replacement is not needed.

Further, the hydraulic buffer 21 includes a hydraulic cylinder 211 and a telescopic rod 212 located above the hydraulic cylinder 211 and capable of performing telescopic displacement relative to the hydraulic cylinder 211, the bottom of the hydraulic cylinder 211 is fixedly connected with the connecting plate 4, the top of the telescopic rod 212 is fixedly connected with the fixing piece 3, the elastic component 22 is sleeved outside the telescopic rod 212, the elastic component 22 is a spring 221, the lower end of the spring 221 is abutted to the hydraulic cylinder 211, and the upper end of the spring 221 is abutted to the fixing piece 3.

Further, the bumper beam is located below the left end and the right end of the front bumper beam 1, collision buffer sleeves 5 with the same structure are further arranged between the fixing pieces 3 and the connecting plates 4, each collision buffer sleeve 5 is sleeved outside the corresponding buffer device 2 and comprises an upper collision buffer sleeve 51 and a lower collision buffer sleeve 52, the top end of the upper collision buffer sleeve 51 is fixedly connected with the fixing pieces 3, and the lower end of the upper collision buffer sleeve is connected with the upper end of the lower collision buffer sleeve 52 and can move up and down relative to the lower collision buffer sleeve 52.

The design has the advantages that the energy transmitted by the front bumper beam 1 is absorbed through the collision buffer sleeve 5, and when the collision buffer sleeve 5 deforms and contracts under the stress, the buffer energy absorption effect is further improved.

Further, the upper crash cushion 51 is inserted into the lower crash cushion 52, and has the same structure, and its cross-section is circular or polygonal, and other shapes that can facilitate the relative movement of the two, in this embodiment, the cross-section is rectangular.

Further, the upper collision buffer sleeve 51 and the lower collision buffer sleeve 52 are in clearance fit, and the clearance distance is 0.1-0.3mm.

Further, a reinforcing beam 6 is connected between the lower crash cushion 52 at the lower ends of the first fixing portion 102 and the second fixing portion 103.

Through the design of stiffening beam 6, can play the effect that increases assembly strength, also can provide the installing support welding position for other automobile body parts as a stable structure.

Compared with the conventional common front bumper beam assembly, the utility model mainly reduces the maintenance cost after low-speed collision and improves the buffering and energy absorbing capacity during high-speed collision.

According to the utility model, by designing the telescopic buffer device 2, the front bumper beam 1 and the collision buffer sleeve 5 shrink along with the buffer device 2 during low-speed collision, energy is absorbed through the shrinkage of the spring 221 and the hydraulic buffer 21 of the buffer device 2, and when the acting force disappears, the front bumper beam is reset through the elasticity of the spring 221, so that replacement is not needed; when high-speed collision occurs, part of collision energy can be absorbed by shrinkage of the buffer device 2, and then the deformation of the front bumper beam 1, the upper collision buffer sleeve 51, the lower collision buffer sleeve 52 and the stiffening beam 6 is used for absorbing energy, so that the buffer energy absorption can be enhanced, the safety of personnel in a vehicle can be better protected, and meanwhile, the stiffening beam 6 can play a role in increasing the integral strength of the assembly, and can also serve as a stable structure to provide a mounting bracket welding position for other vehicle body parts.

The utility model also provides an automobile using the embodiment, which comprises an automobile body metal plate, wherein the telescopic front bumper beam assembly is fixedly arranged on the automobile body metal plate.

Exemplary embodiments according to the present utility model will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art, that in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and that identical reference numerals are used to designate identical devices, and thus descriptions thereof will be omitted.

Claims (9)

1. A retractable front bumper beam assembly, comprising:

the front bumper beam (1) comprises a connecting part (101) positioned at the middle part, and a first fixing part (102) and a second fixing part (103) which extend outwards along the two ends of the connecting part (101);

the lower ends of the first fixing part (102) and the second fixing part (103) are respectively provided with a buffer device (2) with the same structure, and the buffer devices (2) comprise a hydraulic buffer (21) and an elastic part (22) sleeved on the upper part of the hydraulic buffer (21); the top of two hydraulic buffer (21) is connected first fixed part (102) and second fixed part (103) through mounting (3) respectively, and the bottom of two hydraulic buffer (21) is connected in automobile body panel beating through connecting plate (4) respectively, the lower extreme and the hydraulic buffer (21) butt of elastomeric element (22), the upper end and the mounting (3) butt of elastomeric element (22).

2. The telescopic front bumper beam assembly according to claim 1, wherein the lower parts of the left end and the right end of the front bumper beam (1) are respectively provided with a collision buffer sleeve (5) with the same structure between the fixing piece (3) and the connecting plate (4), each collision buffer sleeve (5) is sleeved outside the buffer device (2), the telescopic front bumper beam assembly comprises an upper collision buffer sleeve (51) and a lower collision buffer sleeve (52), the top end of the upper collision buffer sleeve (51) is fixedly connected with the fixing piece (3), and the lower end of the upper collision buffer sleeve (51) is connected with the upper end of the lower collision buffer sleeve (52) and can move up and down relative to the lower collision buffer sleeve (52).

3. The retractable front bumper beam assembly of claim 2, wherein each of said upper crash cushion sleeves (51) is inserted into said lower crash cushion sleeve (52) and is identical in construction and has a circular or polygonal cross-sectional shape.

4. A retractable front bumper beam assembly according to claim 3, wherein the upper crash cushion (51) is in clearance fit with the lower crash cushion (52) by a clearance distance of 0.1-0.3mm.

5. A telescopic front bumper beam assembly according to claim 3, characterized in that a reinforcement beam (6) is connected between the lower crash cushion (52) at the lower end of the first (102) and second (103) fixing portions.

6. The retractable front bumper beam assembly of claim 1, wherein the securing member (3) is a square plate, polygonal plate or circular plate.

7. The telescopic front bumper beam assembly according to claim 1, wherein the hydraulic buffer (21) comprises a hydraulic cylinder (211) and a telescopic rod (212) which is positioned above the hydraulic cylinder (211) and can perform telescopic displacement relative to the hydraulic cylinder (211), the elastic component (22) is sleeved outside the telescopic rod (212), the bottom of the hydraulic cylinder (211) is fixedly connected with the connecting plate (4), and the top of the telescopic rod (212) is fixedly connected with the fixing piece (3).

8. The retractable front bumper beam assembly of claim 1, wherein the resilient member (22) is a spring (221).

9. An automobile comprising a sheet metal body having fixedly mounted thereon a retractable front bumper beam assembly according to any one of claims 1-8.