CN-122014081-A - Active pedestrian protection hood hinge with quick replacement energy-absorbing plate

CN122014081ACN 122014081 ACN122014081 ACN 122014081ACN-122014081-A

Abstract

The invention relates to the technical field of automobile safety devices, in particular to an active pedestrian protection hood hinge with a quick-replacement energy absorbing plate, which comprises a rotating page, an energy absorbing plate, a sliding shaft, a first hinge arm and two second hinge arms, wherein the energy absorbing plate and the rotating page are in a detachable connection mode, when the energy absorbing plate is damaged due to pedestrian protection triggering, only the plate is required to be replaced without integrally replacing a hinge assembly, so that the maintenance cost and the period are greatly reduced, and because the sliding shaft adopts a double-step structure, the sliding fit of a first step and the side wall of a sliding groove is realized, the interference fit of a plurality of protruding features of the inner wall of the guiding groove is formed by the second step, and three functions of normal opening buffering, closing locking and collision energy absorption of a hood are simultaneously realized through a single fit relation, so that the hinge structure is simplified, the rear space of the hood is effectively saved, and the problem of complex structure and large occupied space due to function module dispersion is solved.

Inventors

SHEN SONG
MENG HUI
WAN HUAN
ZHU LIANG
CHEN MINGLIANG

Assignees

重庆宏锐汽车零部件有限公司

Dates

Publication Date: 20260512
Application Date: 20260409

Claims (8)

1. An active pedestrian protection hood hinge with a quick-change energy absorbing plate is characterized in that, The automobile body panel beating device comprises a rotating page, an energy absorbing plate, a sliding shaft, a first hinge arm and two second hinge arms, wherein one end of the first hinge arm is rotatably provided with the rotating page, the other end of the first hinge arm is rotatably provided with the two second hinge arms, and one ends of the two second hinge arms, far away from the first hinge arm, are connected with the automobile body panel beating; the energy absorbing plate is detachably connected with the rotating page and is positioned at one side of the rotating page far away from the first hinge arm, a chute is further formed in the rotating page, a guide groove is formed in the energy absorbing plate and coincides with the chute, and the sliding shaft is arranged at the first hinge arm and penetrates through the chute and the guide groove; the inner wall of guide way is provided with a plurality of protruding characteristics along the slip direction, the sliding shaft is two step structures, and it includes coaxial first step and the second step that sets up, first step with the lateral wall sliding fit of spout, the second step with protruding characteristic in the guide way forms interference fit.
2. An active pedestrian protection hood hinge with quick change energy absorber plate as set forth in claim 1, The one side of rotatory page or leaf keeping away from first hinge arm is provided with the location arch, be provided with the locating hole on the energy-absorbing board, the location arch with the locating hole looks adaptation.
3. An active pedestrian protection hood hinge with quick change energy absorber plate as set forth in claim 2, wherein, The energy absorbing plate is detachably fixed with the rotating page through a locking bolt, and the locking bolt, the positioning protrusion and the positioning hole are distributed in space.
4. An active pedestrian protection hood hinge with quick change energy absorber plate as set forth in claim 1, The protruding feature is a semicircular protruding point or a rib position extending longitudinally along the guide groove.
5. An active pedestrian protection hood hinge with quick change energy absorber plate as set forth in claim 3, When the protruding feature is a rib position, the cross section of the rib position is semicircular, triangular or trapezoidal.
6. An active pedestrian protection hood hinge with quick change energy absorber plate as set forth in claim 1, The plurality of protruding features are uniformly spaced along the sliding direction of the guide groove.
7. An active pedestrian protection hood hinge with quick change energy absorber plate as set forth in claim 1, The energy absorbing plate is made of plastic, nylon composite material or aluminum alloy material.
8. An active pedestrian protection hood hinge with quick change energy absorber plate as set forth in claim 1, The diameter of the first step is smaller than the diameter of the second step.

Description

Active pedestrian protection hood hinge with quick replacement energy-absorbing plate Technical Field The invention relates to the technical field of automobile safety devices, in particular to an active pedestrian protection hood hinge with an energy absorbing plate capable of being replaced quickly. Background With the development of automobile safety technology, pedestrian protection has become an important consideration for vehicle design. The active pedestrian protection system provides a larger buffer space for the head of a pedestrian by actively bouncing the rear part of the engine cover before collision occurs, thereby effectively reducing injury. As a key performance component of the system, the performance of the active hood hinge is critical. However, after the existing hinge is triggered by the pedestrian protection device, the energy absorption structure (such as a crushing type bracket, a broken bolt and the like) of the existing hinge is usually permanently deformed or damaged, so that the hinge assembly needs to be integrally replaced during maintenance, the maintenance cost is high, the maintenance period is long, and a plurality of independent functional components are required to be arranged in the prior art for realizing the functions of normally opening, buffering, collision energy absorption, resetting, locking and the like. The scattered structure not only increases the complexity of the hinge assembly, but also occupies the rear space of the engine cover, and is not beneficial to the arrangement of the whole automobile. In summary, the existing active hood hinge has the problems of high maintenance cost caused by the irreplaceable energy absorption structure and large occupied space caused by the scattered function modules. Disclosure of Invention The invention aims to provide an active pedestrian protection hood hinge with an energy absorption plate capable of being replaced quickly, and solves the problems that an existing active hood hinge is high in maintenance cost due to the fact that an energy absorption structure is not replaceable, and large in occupied space due to the fact that functional modules are scattered. In order to achieve the above purpose, the invention provides an active pedestrian protection hood hinge with a quick-change energy-absorbing plate, which comprises a rotating leaf, an energy-absorbing plate, a sliding shaft, a first hinge arm and two second hinge arms, wherein one end of the first hinge arm is rotatably provided with the rotating leaf, the other end of the first hinge arm is rotatably provided with the two second hinge arms, and one ends of the two second hinge arms far away from the first hinge arm are connected with a metal plate of a vehicle body; the energy absorbing plate is detachably connected with the rotating page and is positioned at one side of the rotating page far away from the first hinge arm, a chute is further formed in the rotating page, a guide groove is formed in the energy absorbing plate and coincides with the chute, and the sliding shaft is arranged at the first hinge arm and penetrates through the chute and the guide groove; the inner wall of guide way is provided with a plurality of protruding characteristics along the slip direction, the sliding shaft is two step structures, and it includes coaxial first step and the second step that sets up, first step with the lateral wall sliding fit of spout, the second step with protruding characteristic in the guide way forms interference fit. The rotary hinge comprises a first hinge arm, a second hinge arm, a rotary hinge and an energy absorbing plate, wherein a positioning protrusion is arranged on one surface of the rotary hinge away from the first hinge arm, a positioning hole is formed in the energy absorbing plate, and the positioning protrusion is matched with the positioning hole. The energy absorbing plate is detachably fixed with the rotating page through a locking bolt, and the locking bolt, the positioning protrusions and the positioning holes are distributed in space. Wherein the protruding feature is a semicircular protruding point or a rib position extending longitudinally along the guide groove. When the protruding feature is a rib position, the cross section of the rib position is semicircular, triangular or trapezoidal. Wherein, a plurality of protruding features are evenly spaced along the sliding direction of the guide slot. Wherein the energy absorbing plate is made of plastic, nylon composite material or aluminum alloy material. Wherein the diameter of the first step is smaller than the diameter of the second step. The invention discloses an active pedestrian protection hood hinge with a quick-replacement energy-absorbing plate, which comprises a rotating page, an energy-absorbing plate, a sliding shaft, a first hinge arm and two second hinge arms, wherein the energy-absorbing plate and the rotating page are in a detachable connection mode, an irreversible energ