CN208101909U - A kind of pedestrian shank protective cradle - Google Patents

Abstract

The utility model discloses a car pedestrian's calf protection bracket, which comprises a horizontal connection part and two left and right vertical connection parts. A wind deflector is installed in the C-shaped opening, the front end of the wind deflector is in sealing connection with the horizontal connection part, the left and right ends are in sealing connection with the left and right vertical connection parts, and the rear end is connected with the rear ends of the left and right vertical connection parts. line flush. The beneficial effect of the utility model is that the hot air at the rear end of the radiator can be prevented from returning to the front end of the radiator again.

Description

Protective bracket for lower legs of automobile pedestrians

technical field

The utility model belongs to the field of automobile design and manufacture, in particular to a protective bracket for the lower legs of automobile pedestrians.

Background technique

With the development of automobile technology and the improvement of people's safety awareness, the protection of automobiles is no longer limited to the passengers in the car, but extended to pedestrians who may collide with the car. When a car collides with a pedestrian, usually the lower end of the vehicle body collides with the pedestrian's calf, causing injury to the pedestrian's calf. Pedestrian calf anti-collision beams are installed on many automobiles at present to reduce the damage caused by automobiles to pedestrians' calf during collisions. Chinese patent document CN106740647A disclosed the "automobile pedestrian protection structure" on May 31, 2017, including: a beam, a calf support, an energy-absorbing box and a supporting structure, the beam is fixedly connected to the calf support, and the energy-absorbing box It is fixed at the fixed connection between the beam and the lower leg support, one end of the support structure is fixedly connected to the lower leg support, and the other end is fixedly connected to the energy-absorbing box. The applicant claims that the automobile pedestrian protection structure provided by the embodiment of the invention can form a favorable support for the calf support by adding a support structure between the calf support and the energy-absorbing box in the existing pedestrian protection structure, so that the calf support can be supported under stress. It is not easy to be deformed, thereby improving the impact resistance of the entire pedestrian protection structure, and finally providing better protection for pedestrians. Due to the simple structure and good effect of this structure, it can be widely used in the application field of automobile pedestrian protection structures. However, as in the traditional solution represented by this application, the shank anti-collision beam generally adopts a slender tubular sheet metal structure, which is assembled and fixed with the bumper. There is a free space behind the shank anti-collision beam and in front of the radiator, and the airflow can be freely In and out, this causes hot air from the rear end of the radiator to flow back to the rear of the calf beam and the front of the radiator, where it is used again to cool the radiator. Since this part of the air has already passed through the radiator once at this time, it has absorbed a lot of heat, and its temperature is relatively high. When it exchanges heat with the radiator for the second time, its exchange efficiency will drop significantly, resulting in low heat dissipation efficiency of the radiator, and the cooling fan will be damaged. High-frequency starting is not conducive to the safe operation of the engine, but also increases power consumption, which puts more stringent requirements on the vehicle battery.

Contents of the invention

Based on the above problems, the utility model provides a car pedestrian calf protection bracket, which can prevent the hot air at the rear end of the radiator from returning to the front end of the radiator again.

For ease of description, unless otherwise specified, the concepts of orientations such as front, rear, left, right, up, and down in the following are based on the reference position of being inside the car and facing the direction of travel.

In order to achieve the purpose of the invention, the utility model adopts the following technical scheme: a car pedestrian calf protection bracket, including a horizontal connection part, and also includes two left and right vertical connection parts, the front ends of the vertical connection part are respectively connected with the left and right ends of the horizontal connection part , forming a C-shape with the opening facing backward; a wind deflector is installed in the C-shaped opening, the front end of the wind deflector is in sealing connection with the horizontal connection part, the left and right ends are in sealing connection with the left and right vertical connection parts, and the rear end is in sealing connection with the left and right two The connecting lines at the rear ends of the vertical connecting parts are flush.

The car pedestrian calf protection bracket designed in this scheme is connected with the two longitudinal joints through the left and right ends of the horizontal joint to form a C-shaped structure with the opening facing backward. The structure itself is used to protect the pedestrian's calf. An air deflector is installed in the inner seal, so that the hot air from the rear end of the radiator is blocked by the air deflector and cannot reach the front end of the radiator, thereby achieving the purpose of the invention.

Preferably, the horizontal connection part is flat and protrudes forward, and the vertical connection part is flat and protrudes outward. The horizontal connection part and the vertical connection part are designed to be flat and protrude forward and outward, so that the horizontal connection part and the vertical connection part form the forward and outward extension of the air deflector in shape, preventing the rear end of the radiator from reaching The effect is more pronounced at the front of the radiator.

Preferably, the front end of the transverse connection part is provided with several tooth-shaped protrusions, and the direction of the protrusions is forward. The tooth-shaped protrusions can reduce the amount of material used on the premise of ensuring the outer contour of the structure, which is beneficial to the manufacturing cost and the lightweight of the vehicle body.

Preferably, an extension part is provided outside the position where the horizontal connection part is connected to the vertical connection part, and the outer end of the extension part is inclined backward. An extension is designed on the outer side of the transverse connection to provide protection for pedestrians over a wider distance. The slope to the rear is to adapt to the contour direction of the front enclosure of the car body.

Preferably, a positioning pin and a mounting through hole are provided on the rear end face of the longitudinal connection portion, and the axial directions of the positioning pin and the mounting through hole are both front and rear directions. The front-end module of the vehicle body is correspondingly designed with a pin hole and an installation through hole. Insert the positioning pin into the pin hole to achieve precise positioning, and then use the bolt pair to pass through the bracket and the installation through-hole at the corresponding position on the front-end module of the vehicle body. The bracket can be precisely fixed on the vehicle body.

Preferably, a screw hole connected with the front bumper is provided above the longitudinal connection portion. This design can also realize the precise positioning and fixing of the upper and lower positions of the bracket.

Preferably, the horizontal connection part, the vertical connection part and the air deflector are all made of plastic. The use of plastic materials can not only reduce the damage caused by metal materials to pedestrians when they accidentally collide with pedestrians, but also help to reduce the weight of vehicles. At the same time, the use of plastic materials allows the horizontal connection part, the vertical connection part and the wind deflector to be injection molded as a whole, which improves the manufacturing efficiency and simplifies the assembly work.

Preferably, the horizontal connecting portion and the vertical connecting portion are flat shells with open lower ends, and several reinforcing ribs are arranged inside the shell. Since the horizontal connecting part and the vertical connecting part are made of plastic material, it is necessary to design it as a flat shell with an open lower end, and design a number of ribs inside the shell to enhance its strength.

To sum up, the beneficial effect of the utility model is: it can prevent the hot air at the rear end of the radiator from returning to the front end of the radiator again.

Description of drawings

Fig. 1 is a three-dimensional schematic view of the utility model from an upper side perspective.

Fig. 2 is a three-dimensional schematic diagram of another side of the utility model from an upper perspective.

Fig. 3 is a three-dimensional schematic view of the utility model from a side-down perspective.

Among them: 1 horizontal connection part, 2 vertical connection part, 3 wind deflector, 4 reinforcement rib, 11 tooth-shaped protrusion, 12 extension part, 21 positioning pin, 22 installation through hole.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

The embodiment shown in Fig. 1 and Fig. 2 is a protection bracket for lower legs of automobile pedestrians. The bracket includes a horizontal connection part 1 at the front end and two vertical connection parts 2 on the left and right sides. A wind deflector 3 is installed in the opening of the wind deflector, the front end of the wind deflector is in sealing connection with the horizontal connection part, the left and right ends are in sealing connection with the left and right vertical connection parts, and the rear end is in line with the rear ends of the left and right vertical connection parts flat. The horizontal connection part is flat and protrudes forward, and the vertical connection part is flat and protrudes outward. The front end of the horizontal connection part is provided with several tooth-shaped protrusions 11, and the direction of the protrusions is forward. An extension part 12 is provided outside the position where the horizontal connection part is connected with the vertical connection part, and the outer end of the extension part is inclined to the rear. A positioning pin 21 and a mounting through hole 22 are arranged on the rear end face of the longitudinal connection part. The axial directions of the positioning pin and the mounting through hole are both front and rear directions, and are used to accurately position and fix the vertical connection part and the front-end module of the vehicle body. A screw hole connected with the front bumper is provided above the longitudinal connecting portion, which is used for positioning and fixing the bracket in the up and down direction. In order to reduce the number of parts, reduce the installation action, and realize the lightweight of the vehicle, the horizontal connection part, the vertical connection part and the air deflector are all made of plastic, and the horizontal connection part, the vertical connection part and the air deflector can be integrally injection molded. As shown in FIG. 3 , the horizontal connection part and the vertical connection part are flat shells with open lower ends, and several reinforcing ribs 4 are arranged inside the shell.

The car pedestrian calf protection bracket in this example is designed with a wind deflector at the rear of the traditional bracket and in front of the radiator, which can block the hot air from the rear end of the radiator at the front end of the radiator.

Claims (8)

1. a kind of pedestrian shank protective cradle, including horizontal interconnecting piece（1）, characterized in that it further include the vertical connection in left and right two Portion（2）, the front end of vertical interconnecting piece connect with the left and right ends of horizontal interconnecting piece respectively, constitutes the C font being open backward；C font Wind deflector is installed in opening（3）, connection is indulged in the front end of wind deflector and the sealed connection of horizontal interconnecting piece, left and right ends and left and right two Portion is tightly connected, and rear end is flushed with the backhaul connection of the two vertical interconnecting pieces in left and right.

2. a kind of pedestrian shank protective cradle according to claim 1, characterized in that horizontal interconnecting piece is to forward extend out It is flat, vertical interconnecting piece be stretch out outward it is flat.

3. a kind of pedestrian shank protective cradle according to claim 1 or 2, characterized in that the front end of horizontal interconnecting piece Equipped with several detent projections（11）, protrusion direction is forward.

4. a kind of pedestrian shank protective cradle according to claim 1 or 2, characterized in that horizontal interconnecting piece with it is vertical What is also extended on the outside of the position of interconnecting piece connection is equipped with extension（12）, the outboard end tilted rearward of extension.

5. a kind of pedestrian shank protective cradle according to claim 1 or 2, characterized in that the rear end of vertical interconnecting piece End face is equipped with positioning pin（21）And installation through-hole（22）, the axial direction of positioning pin and installation through-hole is front-rear direction.

6. a kind of pedestrian shank protective cradle according to claim 1 or 2, characterized in that the top of vertical interconnecting piece Equipped with the screw hole being connect with front bumper.

7. a kind of pedestrian shank protective cradle according to claim 1 or 2, characterized in that horizontal interconnecting piece, vertical connection Portion and wind deflector are plastic material.

8. a kind of pedestrian shank protective cradle according to claim 7, characterized in that horizontal interconnecting piece, vertical interconnecting piece For the open flat shell in lower end, shell is interior to be equipped with several reinforcing ribs（4）.