CN202656981U - Telescopic automobile bumper - Google Patents

Abstract

The utility model relates to a telescopic automobile bumper especially applied to passenger cars, microbuses and flat-head trucks. The bumper assembly is composed of a collision prevention beam (1), two carlings (2) and a telescopic mechanism (3), wherein each carling (2) is composed of four sections which are a front fixed section (4) fixedly connected to the collision prevention beam (1), a front folded section (5), a back folded section (6) and a back fixed section (7) fixed on an automobile body and are connected through hinges, the telescopic mechanism (3) is composed of a left folded arm (8), a right folded arm (9), an upper tappet (10), an upper cylinder (11), a lower cylinder (12) and a lower tappet (13), one ends of the left folded arm (8) and the right folded arm (9) are jointly hinged on the upper tapped (10) connected with the upper cylinder (11), the other ends of the left folded arm (8) and the right folded arm (9) are respectively hinged between the front folded section (5) and the back folded section (6), and the lower cylinder (12) is connected with the collision prevention beam (1) through the lower tappet (13). The telescopic automobile bumper can effectively protect safety of drivers.

Description

Telescopic car bumper

technical field

The utility model relates to an automobile bumper, in particular to a front anti-collision bumper suitable for passenger cars, minivans and flat trucks.

Background technique

With the rapid development of my country's social economy and science and technology, cars have become a part of our lives. The number of cars has been increasing year after year, but what follows is a series of problems on the environment, traffic, safety and other aspects. A large number of car accident cases show that the front bumper of a car plays an important protective role in ensuring the safety of drivers and passengers. However, the current vehicle structures such as passenger cars, minivans, and trucks do not have an engine compartment at the front, and the space for arranging energy-absorbing devices is small, which is easy to cause injury to the driver when the vehicle collides.

Contents of the invention

The purpose of the utility model is to propose a telescopic automobile bumper that does not increase the vehicle's external space size and can improve the safety protection of the driver when the vehicle is running at high speed.

In conjunction with the accompanying drawings, the description is as follows:

A telescopic automobile bumper, the bumper assembly is composed of an anti-collision beam 1, two longitudinal beams 2 and a telescopic mechanism 3, wherein the longitudinal beam 2 is composed of four sections, including a front The fixed section 4, the front folding section 5, the rear folding section 6 and the rear fixed section 7 fixed on the vehicle body are connected by hinges; 10. The upper cylinder 11, the lower cylinder 12 and the lower tappet 13 are composed. One end of the left folding arm (8) and the right folding arm 9 are jointly hinged on the upper tappet 10 connected to the upper cylinder 11, and the other ends are respectively hinged on the front Between the folding section 5 and the rear folding section 6 , the lower cylinder 12 is connected with the anti-collision beam 1 through the lower tappet 13 .

The front folding section 5 and the rear folding section 6 are designed to crush an energy-absorbing area 16 ; an energy-absorbing block 14 and an energy-absorbing box 15 are arranged in the front fixing section 4 .

The upper cylinder 11 and the lower cylinder 12 are two-cylinder non-dead-angle telescopic bumper drive mechanisms with asynchronous motion.

Beneficial effects: the telescopic bumper of the utility model is installed on a vehicle with a small front energy-absorbing space such as a passenger car or a flat-headed truck, and the bumper can be stretched front and rear under the drive of the telescopic mechanism driving cylinder and the anti-collision beam driving cylinder. That is, when the driving speed of the vehicle is higher than a certain value, the front bumper will automatically extend a certain distance to increase the length of the energy-absorbing device. In the event of a collision, the safety of the driver can be more effectively protected. When the vehicle speed drops to a certain value, the protruding part of the bumper can be retracted, which can not only strengthen the protection of the driver in an accident when the vehicle is running at high speed, but also solve the problem of taking up too much space when the vehicle is running at a low speed and parked. .

Description of drawings

Fig. 1 is the structural representation of telescopic bumper of the present utility model;

Fig. 2 is a side view of Fig. 1;

Fig. 3 is a longitudinal beam structure diagram;

Fig. 4 is a schematic diagram of the telescoping mechanism;

Fig. 5 is a side view of Fig. 4;,

Fig. 6 is a telescopic control schematic diagram of the utility model telescopic bumper;

Fig. 7 is a schematic diagram of the longitudinal beam energy-absorbing structure;

Fig. 8 is a schematic diagram of the telescopic bumper of the present invention in a telescopic state.

Among them: 1. Anti-collision beam 2. Longitudinal beam 3. Telescopic mechanism 4. Front fixed section 5. Front folding section 6. Rear folding section 7. Rear fixed section 8. Left folding arm 9. Right folding arm 10. Upper tappet 11. Upper cylinder 12. Lower cylinder 13. Lower tappet 14. Energy absorbing block 15. Energy absorbing box 16. Crushing energy absorbing area

Detailed ways

Below in conjunction with the example that accompanying drawing provides, the utility model is described in further detail.

Referring to Figures 1 to 6, a telescopic automobile bumper, the bumper assembly is composed of an anti-collision beam 1, two longitudinal beams 2 and a telescopic mechanism 3, wherein the longitudinal beam 2 is composed of four sections, including The front fixed section 4 on the collision beam 1, the front folded section 5, the rear folded section 6 and the rear fixed section 7 fixed on the vehicle body are connected by hinges; , an upper tappet 10, an upper cylinder 11, a lower cylinder 12 and a lower tappet 13, one end of the left folding arm 8 and the right folding arm 9 are jointly hinged on the upper tappet 10 connected to the upper cylinder 11, and the other ends are respectively hinged Between the front folding section 5 and the rear folding section 6 , the lower cylinder 12 is connected with the anti-collision beam 1 through the lower tappet 13 .

The front folding section 5 and the rear folding section 6 are designed to crush an energy-absorbing area 16 ; an energy-absorbing block 14 and an energy-absorbing box 15 are arranged in the front fixed section 4 .

The upper cylinder 11 and the lower cylinder 12 are two-cylinder non-dead-angle telescopic bumper drive mechanisms with asynchronous motion.

The vehicle speed signal measured by the speed sensor is processed by the electronic control unit to control the expansion and contraction of the cylinder, thereby achieving the purpose of controlling the expansion and contraction of the bumper.

Referring to Fig. 7, in order to make the bumper still have a certain low-speed collision energy-absorbing effect in the unextended state, the front fixing section can play an energy-absorbing effect. The front fixed section 4 is arranged with an energy-absorbing block 14 and an energy-absorbing box 15 structure.

At the same time, considering the influence of bumper protruding on the shape of the vehicle when driving at high speed, the exterior trim can be reasonably designed so that the surroundings of the protruding section of the bumper assembly are covered by the trim, and the trim is fixed on the anti-collision beam 1 to avoid It has a great influence on the appearance of the vehicle.

Telescoping bumpers are installed on the front of vehicles such as passenger cars and pickup trucks. Use the vehicle's built-in vehicle speed sensor to measure vehicle speed. The vehicle speed signal measured by the vehicle speed sensor is processed by the electronic control unit to control the expansion and contraction of the cylinder, thereby achieving the purpose of controlling the expansion and contraction of the bumper.

Referring to Figure 8, during the running of the vehicle, the speed sensor continuously collects the vehicle speed signal and transmits it to the control unit. When the vehicle speed is higher than the set speed value (such as 40 km/h), the controller first triggers the control valve A to make the lower cylinder 12 The rear air chamber takes in air, and the anti-collision beam 1 moves forward through the lower tappet 13, driving the front fixed section 4, so that a certain angle is formed between the front folding section 5 and the rear folding section 6. During this process, the upper cylinder 11 is in a follow-up state, that is, both air chambers of the upper cylinder 11 are in communication with the atmosphere. After a certain time delay, the electronic control unit triggers the control valve B to make the air chamber at the rear of the upper cylinder 11 intake air and push the upper tappet 10, so that the front folding section 5 and the rear folding section 6 are gradually straightened to 180 degrees, and the lower Together the tappets 13 extend the bumper assembly forward. In the same way, when the vehicle speed is lower than the set speed value (such as 30 km/h), the vehicle speed signal measured by the speed sensor is processed by the electronic control unit, and the control valve B is first triggered, and the air chamber at the front of the upper cylinder 11 is fed into the air, through The upper tappet 10 makes the front folding section 5 and the rear folding section 6 produce a certain angle, and retracts a certain distance. During this process, the lower cylinder 12 is in a follow-up state, that is, both air chambers of the lower cylinder 12 are communicated with the atmosphere. After a certain period of time, the electronic control unit triggers the control valve A, so that the air chamber at the front of the lower cylinder 12 takes in air, and the lower tappet 13 is pulled to retract, and the upper tappet 10 and the lower tappet 13 together retract the bumper assembly.

The determination of the material and structure of the energy-absorbing device, the amount of air intake of the cylinder, the delay control of the electronic control unit, and the structural size of each rod are determined by the specific model.

Claims (3)

1. A telescopic automobile bumper, characterized in that: the bumper assembly is made up of an anti-collision beam (1), two longitudinal beams (2) and a telescopic mechanism (3), wherein the longitudinal beam (2) consists of four section, including the front fixed section (4) fixedly connected to the anti-collision beam (1), the front folding section (5), the rear folding section (6) and the rear fixed section (7) fixed on the vehicle body. The telescopic mechanism (3) consists of a left folding arm (8), a right folding arm (9), an upper tappet (10), an upper cylinder (11), a lower cylinder (12) and a lower tappet (13) One end of the left folding arm (8) and the right folding arm (9) are jointly hinged on the upper tappet (10) connected to the upper cylinder (11), and the other ends are respectively hinged on the front folding section (5) and the rear folding Between the sections (6), the lower cylinder (12) is connected to the anti-collision beam (1) through the lower tappet (13). 2. The retractable automobile bumper according to claim 1, characterized in that: the front folding section (5) and the rear folding section (6) are designed to crush the energy-absorbing area (16); the front fixed section ( 4) An energy-absorbing block (14) and an energy-absorbing box (15) are arranged in it. 3. The telescopic automobile bumper according to claim 1, characterized in that: the upper cylinder (11) and the lower cylinder (12) are a two-cylinder non-dead angle telescopic bumper driving mechanism with asynchronous movement.

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