CN111472629A

CN111472629A - Hood lock structure beneficial to pedestrian protection

Info

Publication number: CN111472629A
Application number: CN202010353501.3A
Authority: CN
Inventors: 赵莹; 董钰舒; 李晓晨; 孙保卫; 尉士田; 杨春; 蔺甲; 冯灿东
Original assignee: Hanteng Automobile Co Ltd
Current assignee: Hanteng Automobile Co Ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-07-31

Abstract

The invention discloses a hood lock structure beneficial to pedestrian protection, which comprises a first lock catch main body and a second lock catch main body, wherein a slot is formed in the first lock catch main body; the first lock catch main body is provided with a weakening line and a tearing opening, the bent part at the upper part of the first lock catch main body is connected with the inner plate of the hood, and the energy absorption is buffered by tearing the metal plate after the positioning pin is cut off; the second lock catch main body is arranged in a T shape, so that the second lock catch main body can be conveniently connected with the first lock catch main body to prevent the second lock catch main body from falling off, the cylinder part of the second lock catch main body is matched with the lock tongue to lock the hood, and the tearable metal plate slides in the slot after the positioning pin is sheared off; this use is novel to have solved aircraft bonnet lock non-deformable, the little problem in buffering (hole) space, can directly open the aircraft bonnet so that the maintenance after the striking (shell), and this locomotive aircraft bonnet hasp inner structure design can play the effect of buffering absorbed energy.

Description

Hood lock structure beneficial to pedestrian protection

Technical Field

The invention relates to the technical field of hood lock equipment, in particular to a hood lock structure beneficial to pedestrian protection.

Background

The protection safety performance of the automobile for pedestrians becomes an important concern, and hard points which are not easy to deform under an engine hood can bring great harm to the heads of the pedestrians. And the energy-absorbing crushing space of the engine hood lock area is small and is not easy to deform.

Most car aircraft bonnet hasp at present sets up singlely, and rigidity is great, non-deformable. There are also some structural designs capable of crushing the hood lock catch, for example, patent document No. 201820793917.5, although there is a design for buffering crushing, when the structure is deformed by a large impact force, the deformed structure may block the movement of the latch tongue in the hood lock, so that the hood is difficult to open, increasing the difficulty of maintenance, and therefore, it is necessary to provide a hood lock structure which is beneficial to protecting pedestrians.

Disclosure of Invention

The invention aims to provide a hood lock structure beneficial to pedestrian protection, and the hood lock structure can effectively reduce the damage of a vehicle body to the head of a pedestrian by increasing a downward buffer space in the collision process and absorbing more energy through tearing a metal plate in the buffer process so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a be favorable to aircraft bonnet lock structure of pedestrian protection, includes first hasp main part and second hasp main part, the slot has been seted up in the first hasp main part, the grafting of second hasp main part is installed the slot bottom of first hasp main part, first hasp main part rear side is provided with tearing portion, two lines of weakness have all been seted up to the front and back portion of tearing portion, the slot bottom fixed mounting of first hasp main part has the locating pin, tearing notch has been seted up to the back bottom of tearing portion of first hasp main part.

The second hasp main part includes picture peg and cylinder, the picture peg grafting of second hasp main part is installed in the slot, the through-hole has been seted up on the picture peg of second hasp main part, the internal thread hole has been seted up to the tip of picture peg is connected to the cylinder of second hasp main part, be provided with fixing bolt in internal thread hole and the through-hole, fixing bolt cooperation internal thread hole is with second hasp main part fixed mounting in first hasp main part.

Preferably, the second lock catch main body is an integrally formed T-shaped lock catch main body consisting of the inserting plate and the cylinder.

Preferably, the two ends of the positioning pin are fixedly arranged on the side walls of the slot, and the positioning pin is arranged above the inserting plate of the second lock catch main body.

Preferably, the through hole on the inserting plate is aligned with the internal thread hole of the column body, and the fixing bolt penetrates through the through hole.

Preferably, the positioning pin is made of 40Cr material with the impact force threshold value of 1200N-1800N.

Preferably, a clearance fit is arranged between the inserting plate of the second lock catch main body and the inserting groove of the first lock catch main body.

Compared with the prior art, the invention has the beneficial effects that:

the first lock catch main body is provided with a weakening line and a tearing opening, the bent part at the upper part of the first lock catch main body is connected with the inner plate of the hood, and the energy absorption is buffered by tearing the metal plate after the positioning pin is cut off; the second lock catch main body is arranged in a T shape, so that the second lock catch main body can be conveniently connected with the first lock catch main body to prevent the second lock catch main body from falling off, the cylinder part of the second lock catch main body is matched with the lock tongue to lock the hood, and the tearable metal plate slides in the slot after the positioning pin is sheared off; this use is novel to have solved aircraft bonnet lock non-deformable, the little problem in buffering (hole) space, can directly open the aircraft bonnet so that the maintenance after the striking (shell), and this locomotive aircraft bonnet hasp inner structure design can play the effect of buffering absorbed energy.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a rear view of the present invention;

fig. 3 is a schematic structural view of the second locking body of the present invention.

In the figure: 1. a first latch body; 2. a second latch body; 3. inserting plates; 4. a cylinder; 5. positioning pins; 6. a slot; 7. a line of weakness; 8. a tearing portion; 9. a tear opening; 10. fixing the bolt; 11. an internally threaded bore; 12. and a through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a be favorable to aircraft bonnet lock structure of pedestrian protection, including first hasp main part 1 and second hasp main part 2, slot 6 has been seted up on the first hasp main part 1, the 6 bottoms of slot at first hasp main part 1 are installed in the grafting of second hasp

main part

2, 1 rear side of first hasp main part is provided with tearing portion 8, two lines of weakness 7 have all been seted up to the front and back portion of tearing

portion

8, 6 bottom fixed mounting in slot of first hasp main part 1 has locating pin 5, tear notch 9 has been seted up to the back bottom of 8 tearing portions of first hasp main part 1.

The second lock catch main body 2 comprises a plug board 3 and a cylinder 4, the plug board 3 of the second lock catch main body 2 is inserted into the slot 6, a through hole 12 is formed in the plug board 3 of the second lock catch main body 2, an internal thread hole 11 is formed in the end portion, connected with the plug board 3, of the cylinder 4 of the second lock catch main body 2, a fixing bolt 10 is arranged in the internal thread hole 11 and the through hole 12, and the fixing bolt 10 is matched with the internal thread hole 11 to fixedly install the second lock catch main body 2 on the first lock catch main body 1.

The second lock catch main body 2 is arranged to be an integrally formed T-shaped lock catch main body consisting of an inserting plate 3 and a cylinder 4, two ends of a positioning pin 5 are fixedly installed on the side wall of a slot 6, the positioning pin 5 is arranged above the inserting plate 3 of the second lock catch main body 2, a through hole 12 in the inserting plate 3 is aligned with an inner threaded hole 11 in the cylinder 4, a fixing bolt 10 penetrates through the through hole 12, the positioning pin 5 is arranged to be a positioning pin 5 made of 40Cr materials with an impact force threshold value of 1200N-1800N (the impact force threshold value of the positioning pin 5 is adjusted according to different vehicle types), and a gap is formed between the inserting plate 3 of the second lock catch main body 2 and the slot 6.

The working principle is as follows: the lock catch structure of the engine hood is characterized in that a first lock catch main body 1 is provided with a weakening line 7 and a tearing opening 9, a bent part at the upper part of the first lock catch main body 1 is connected with an engine hood inner plate, and energy absorption is buffered by tearing a metal plate after a positioning pin 5 is cut off; the second lock catch main body 2 is arranged in a T shape, so that the second lock catch main body can be conveniently connected with the first lock catch main body to prevent the second lock catch main body from falling off, the cylinder 4 part of the second lock catch main body 2 is matched with the lock tongue to lock the hood, and the tearable metal plate slides in the slot 6 after the positioning pin 5 is sheared off; the novel engine hood lock solves the problems that an engine hood lock is not easy to deform and the space of a buffer hole is small, the engine hood can be directly opened after being impacted (a shell) so as to be convenient to maintain, and the internal structural design of the engine hood lock catch can play a role in buffering and absorbing energy;

during specific use, pedestrian's head and car collision in-process, locating pin 5 can be transmitted to the impact force, and the impact force that produces surpasss the atress design value of locating pin 5, and locating pin 5 will be cut off, and second hasp main part 2 slides in slot 6 through the panel beating of tearing first hasp main part 1, and the aircraft bonnet then can continue downstream deformation to increase buffer space, absorb more energy in order to reduce the injury to pedestrian's head.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a be favorable to aircraft bonnet lock structure of pedestrian protection, includes first hasp main part (1) and second hasp main part (2), its characterized in that: a slot (6) is formed in the first lock catch main body (1), the second lock catch main body (2) is installed at the bottom of the slot (6) of the first lock catch main body (1) in an inserted mode, a tearing part (8) is arranged on the rear side of the first lock catch main body (1), two weakening lines (7) are formed in the front and rear parts of the tearing part (8), a positioning pin (5) is fixedly installed at the bottom of the slot (6) of the first lock catch main body (1), and a tearing opening (9) is formed in the bottom of the back part of the tearing part (8) of the first lock catch main body (1);

second hasp main part (2) are including picture peg (3) and cylinder (4), picture peg (3) of second hasp main part (2) are pegged graft and are installed in slot (6), through-hole (12) have been seted up on picture peg (3) of second hasp main part (2), internal thread hole (11) have been seted up to the tip that picture peg (3) are connected in cylinder (4) of second hasp main part (2), be provided with fixing bolt (10) in internal thread hole (11) and through-hole (12), fixing bolt (10) cooperation internal thread hole (11) are with second hasp main part (2) fixed mounting on first hasp main part (1).

2. A hood lock structure for pedestrian protection in accordance with claim 1, wherein: the second lock catch main body (2) is an integrally formed T-shaped lock catch main body consisting of the inserting plate (3) and the column body (4).

3. A hood lock structure for pedestrian protection in accordance with claim 1, wherein: the two ends of the positioning pin (5) are fixedly arranged on the side walls of the slots (6), and the positioning pin (5) is arranged above the inserting plate (3) of the second lock catch main body (2).

4. A hood lock structure for pedestrian protection in accordance with claim 1, wherein: through-hole (12) on picture peg (3) are with cylinder (4) internal thread hole (11) and align the setting, fixing bolt (10) run through-hole (12).

5. A hood lock structure for pedestrian protection in accordance with claim 1, wherein: the positioning pin (5) is made of 40Cr material with the impact force threshold value of 1200N-1800N.

6. A hood lock structure for pedestrian protection in accordance with claim 1, wherein: and a plug board (3) of the second lock catch main body (2) is in clearance fit with a slot (6) of the first lock catch main body (1).