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JP-2026075832-A - Vehicles with pop-up hoods

JP2026075832AJP 2026075832 AJP2026075832 AJP 2026075832AJP-2026075832-A

Abstract

[Challenge] To improve pedestrian protection for vehicles. [Solution] A vehicle having a pop-up hood has a skeletal structural member of the vehicle body that extends along the left edge, front edge, and right edge of the hood beneath it, and left and right pop-up mechanisms that push up the left and right rear edges of the hood in a rear-up direction when a pedestrian collides with the vehicle body. The skeletal structural member has a connecting member in the front skeletal portion that is releasably connected to the front edge of the hood. The connecting member detaches from the rest of the skeletal structural member when the hood is popped up in a rear-up direction by the left and right pop-up mechanisms. [Selection Diagram] Figure 9

Inventors

  • 長澤 勇

Assignees

  • 株式会社SUBARU

Dates

Publication Date
20260511
Application Date
20241023

Claims (5)

  1. A hood is provided at the front of the vehicle body, A skeletal structural member of the vehicle body having a left skeletal portion, a front skeletal portion, and a right skeletal portion that extend along the left edge, front edge, and right edge of the hood below the hood, When a pedestrian collides with the vehicle, the left and right sides of the rear of the hood are popped up upward and backward from the vehicle body by left and right pop-up mechanisms, It has, The aforementioned skeletal structural member is The front frame portion has a connecting member that is releasably connected to the front edge of the hood, The aforementioned connecting member is When the hood is popped up in the rear-upward direction of the vehicle body by the left and right pop-up mechanisms, it detaches from the rest of the skeletal structural member. A vehicle with a pop-up hood.
  2. In the aforementioned skeletal structural member, The aforementioned left skeletal portion is a left upper side member that extends along the longitudinal direction of the vehicle body on the left side of the vehicle body, The aforementioned right skeletal portion is a right upper side member that extends along the longitudinal direction of the vehicle body on the right side of the vehicle body, The aforementioned front frame portion is a substantially frame-shaped radiator frame joined between the front end of the left upper side member and the front end of the right upper side member. The connecting member is a radiator upper frame that constitutes the upper frame portion of the radiator frame, which has a substantially frame shape. The aforementioned radiator upper frame is, When the hood is popped up, it detaches from the rest of the radiator frame. A vehicle having a pop-up hood as described in claim 1.
  3. The aforementioned radiator upper frame is, The hood is mounted so as to be detachable from the rest of the radiator frame by sliding toward the rear of the vehicle, and the left and right rear ends of the hood detach from the rest of the radiator frame as they are pushed upward and backward by the left and right pop-up mechanisms. A vehicle having a pop-up hood as described in claim 2.
  4. The aforementioned radiator upper frame is, The frame body extends in the width direction of the vehicle body, The frame body has left and right protruding fitting portions that protrude from both the left and right ends, The left radiator frame of the remaining portion of the radiator frame has a left fitting receiving portion in which a left fitting hole is formed that fits with the left protruding fitting portion, The right radiator frame in the remaining portion of the radiator frame has a right fitting receiving portion in which a right fitting hole is formed that fits with the right protruding fitting portion. The left and right fitting holes form openings on the rear surfaces of the left and right engaging receiving portions, through which the left and right protruding fitting portions can pass. A vehicle having a pop-up hood as described in claim 3.
  5. A sensor that predicts or detects a collision between the vehicle and a pedestrian, The control unit to which the aforementioned sensor is connected, It has, The control unit, When the sensor predicts or detects a collision between a pedestrian and the vehicle body, the pop-up mechanism is activated to push up the left and right rear portions of the hood. A vehicle having a pop-up hood according to any one of claims 1 to 4.

Description

This application primarily discloses a vehicle having a pop-up hood. Some vehicles have a pop-up hood that can be raised at the rear. When the hood pops up, a space is created beneath it. As a result, the hood can flex under the weight of a pedestrian falling onto it. This flexing deformation allows the hood to absorb the impact on the pedestrian. Japanese Patent Publication No. 2010-006238Japanese Patent Publication No. 2020-032800 This is an explanatory diagram of the first type of collision between a vehicle and a pedestrian.This is an explanatory diagram of the second collision scenario between a vehicle and a pedestrian shown in Figure 1.This is a schematic top view illustrating the vehicle body structure of an embodiment of the present invention.Figure 3 is a schematic front view illustrating the body structure of the vehicle.Figure 3 is a schematic side view of the left front of the vehicle, illustrating the front body structure.This is a schematic left side view of a vehicle hood pop-up mechanism according to an embodiment of the present invention.Figure 6 is a schematic front view of the vehicle's hood pop-up mechanism.Figure 6 is a schematic front view of the release structure for the connecting member in the pop-up mechanism of the vehicle's hood.Figure 6 is a schematic left side view of the vehicle with the hood popped up by the hood pop-up mechanism.Figure 9 is a schematic top view showing a pedestrian falling onto the popped-up hood.Figure 9 is a schematic top view showing a scenario where a pedestrian collides with the left front of the vehicle while the hood's pop-up mechanism is activated.Figures 6 to 9 show the main configuration diagrams of the vehicle's pedestrian protection device that controls the operation of the pop-up mechanism.Figure 12 is a flowchart of the control system that the control unit performs to protect pedestrians. Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, after providing an overview, we will sequentially describe the types of collisions between vehicles and pedestrians, examples of structural members of the vehicle body's frame, examples of hood pop-up structures, examples of the hood in a popped-up state, examples of collisions in this embodiment, examples of pedestrian protection devices for vehicles, their effects, and modifications. The following description of embodiments and drawings are examples of the invention disclosed in this application and do not limit the invention disclosed in this application. (Overview) In one embodiment of the present invention, when the hood is popped up, the connecting member, which is releasably connected to the front edge of the hood, is detached from the rest of the vehicle body's structural members. Here, the vehicle body's structural members have a left structural portion, a front structural portion, and a right structural portion that extend along the left edge, front edge, and right edge of the hood below it. Furthermore, when the left and right pop-up mechanisms push up the left and right rear parts of the hood, they do not simply push the hood upwards towards the vehicle body, but rather push it upwards towards the rear of the vehicle body. Here, the structural members refer to the structural members of the vehicle body at the front of the vehicle body below the hood. The rest of the structural members refer to the parts of the structural members other than the connecting member. This allows the hood to pop up in an upward-sloping position with its leading edge free. The hood can flex in a roughly U-shape overall when the weight of a pedestrian falling onto it acts upon it. As a result, in one embodiment of the present invention, a pedestrian protection function is obtained. In one embodiment of the present invention, for example, the impact when a pedestrian falls onto the hood can be reduced, and moreover, it can be prevented from the pedestrian falling off the hood onto the road surface. Furthermore, in one embodiment of the present invention, an example is described in which the connecting member that is detached from the remaining structural members of the vehicle body is the radiator upper frame, which constitutes the front structural portion of the structural members. By detaching the radiator upper frame, the rigidity of the remaining structural members is reduced, and an improvement in the shock absorption capacity of the remaining structural members can be expected. As a result, in one embodiment of the present invention, the impact acting on a pedestrian when they collide with the front of the vehicle can be further reduced. (Explanation of types of collisions between vehicles and pedestrians) First, let's explain the types of collisions between vehicle 1 and pedestrians. Figures 1 and 2 illustrate two collision scenarios between vehicle 1 and a pedestrian. Figure 1 is an explanatory diagram of the first collision scenario between vehicle 1 an