JPH038541Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to automobiles, particularly to a hood that opens and closes an engine compartment.

[Prior Art] A hood consists of an outer panel and an inner panel, and one end is rotatably attached to the opening of the engine room.

The outer panel is a flat plate with a smooth curved surface that covers the engine compartment, and the inner panel is joined to the back side of the outer panel. The inner panel is punched into a rib shape to reduce weight, and is mainly composed of a frame part joined to the lower surface of the outer periphery of the outer panel, and a main rib connecting the frame parts. One end of the hood is rotatably connected to the engine room to open and close the engine room, and a striker that engages with the locking device in the engine room is attached to the center of the open end. There is.

FIG. 4 shows a typical example of a striker mounting structure, in which the base end of the striker 3 is welded to a hood lock reinforcement 4, and the reinforcement 4 is welded to the upper surface of the frame 21 of the inner panel. I'm here. Further, a hood panel reinforcement 5 is welded to the upper side of the reinforcement 4, and both reinforcements 4 and 5 form a closed cross section.

The above-mentioned main bones are placed in a suitable position to ensure the rigidity of the entire hood, and conventionally, the main bones were generally connected front and back between the center of the open side and the center of the mounting side, and the main bones that connected the center of the open side and the center of the mounting side. It is made up of three main bones, one connecting the left and right corners of each side.

By the way, it is desirable that the hood be low to improve the driver's visibility. On the other hand, the engine is generally mounted in the center of the engine room, and recently various devices have been installed around the top of the engine.

Therefore, there is a problem in that the main bone, which passes back and forth through the center of the back surface of the hood to lower the position of the hood, interferes with the engine and the above-mentioned equipment, and this hand bone imposes restrictions on the position of the hood.

[Problems to be solved by the present invention] The present invention has been made in view of the above-mentioned circumstances, and eliminates the main bone that passes through the center of the back of the hood from front to back to eliminate the restriction on the hood position due to the main bone. It is an object of the present invention to solve the above-mentioned conventional problems by providing a hood structure that can sufficiently ensure the rigidity of the entire hood.

[Means for solving the problem] As shown in FIGS. 1 to 3, on the open end side, a hood lock reinforcement 4 to which a striker 3 is fixed is welded to the upper surface of the frame portion 21 of the inner panel. A hood panel reinforcement 5 is welded to the upper side of the reinforcement 4, and these reinforcements 4 and 5 form a first closed section 7a, and the hood panel reinforcement 5 is welded to the rear side of the reinforcement 4. and welding this to the frame portion 21 of the inner panel, forming a second closed cross section 7b that connects with the first closed cross section between the reinforcement 5 and the frame portion 21, Reinforce the center of the frame.

On the other hand, on the installation side to the engine room, the frame part 2
A hood rear reinforcement 6 is welded to the upper surface of the frame 21 to form a third closed section 7C, thereby reinforcing the central portion of the frame 21.

The main frame of the inner panel is the frame 21 on the open side.
Two main ribs 22A and 22B are arranged to connect both left and right ends of the central portion reinforced with a double closed cross-section structure and both left and right corner corners of the frame portion 21 on the mounting side.

[Function] On the open end side of the hood, first and second closed sections 7 are integrated with each other by the inner panel frame 21, the hood lock reinforcement 4, and the hood panel reinforcement 5 in the center thereof.
a, 7b, the rigidity is significantly strengthened.

Further, since the central portion on the side of the attachment end to the engine room also forms a third closed section 7C with the inner panel frame portion 21 and the hood rear reinforcement 6, the rigidity is strengthened.

Therefore, without arranging a main rib that connects the central portions of the open end side and the mounting end side and extends back and forth through the center of the hood, the left and right ends of the reinforcing portion on the open end side and the corner portions of both left and right ends of the mounting end side are connected. The rigidity of the entire hood is maintained sufficiently by simply arranging two main bones that connect the hood.

By eliminating the main bone in the center of the hood, the degree of freedom in designing the upper part of the engine and its surroundings increases, and the hood can be lowered.

[Example] Embodiments of the present invention are shown in FIGS. 1 to 3.

The outer panel 1 is a flat plate with a smooth curved surface that covers the engine room, and the inner panel 2 is on the back side.
is provided. The inner panel 2 is a press-processed integral molded body, and includes a frame portion 21 along the outer periphery of the back surface of the outer panel 1, and two main ribs 2 that connect the front and back of the frame portion 21.
2A, 22B, and a plurality of small bones 23 connecting both main bones 22A, 22B and connecting both main bones 22A, 22B and frame portion 21. The outer periphery of the frame portion 21 is connected to the outer panel 1 by a hemming formed on the periphery of the outer panel 1. Brace portions are integrally formed at the four corners of the frame portion 21. The rear end of the hood H is rotatably connected to the engine compartment opening, and a striker 3 is attached to the center of the open end.

First, the structure of the open end side provided with the striker 3 will be explained. The frame portion 21 of the inner panel has a flat portion 21a and a standing wall 21b rising from its rear end, and the front end of the flat portion 21a is connected to the outer panel 1 by a hemming 11. The hood lock reinforcement 4 that holds the striker 3 has a length that is approximately half the width of the hood, and consists of a flat part 4a and an upstanding wall 4b at the rear end, and the base end of the striker 3 is welded to the flat part 4a. There is. The plane part 4a of the reinforcement 4 is welded to the upper surface of the plane part 21a of the inner panel frame part 21, and the striker 3 projects downward from a groove 211 formed in the plane part 21a. A planar trapezoidal hood panel reinforcement 5 is provided above the hood lock reinforcement 4, and its front end is connected to the front end of the hood lock reinforcement 4, and its intermediate portion is connected to the upper end of the standing wall 4a of the reinforcement 4. As a result, a first closed section 7a is formed between the reinforcements 4 and 5.

The hood panel reinforcement 5 extends further rearward, and its rear end is welded to the upper end of the standing wall 21b of the inner panel frame 21, thereby creating the first closed space between the reinforcement 5 and the inner panel 2. A second closed cross section 7b is arranged alongside and integral with the cross section 7a.

On the other hand, on the side where the hood H is attached to the engine compartment, the rear end flange of the frame portion 21 with a U-shaped cross section is connected to the hemming 11 on the rear edge of the outer panel 1, and the upper center of the frame portion 21 is connected to the hemming 11 on the rear edge of the outer panel 1. The hood rear reinforcement 6 is welded to form a third closed section 7c.
Configure.

The main ribs 22A, 22B have a substantially U-shaped cross section that protrudes downward, and extend rearward and diagonally outward from positions corresponding to both the left and right ends of the hood panel reinforcement 5 in the frame portion 21 on the open end side, and are located at the mounting end side. It reaches the left and right corners of the frame portion 21.

The small bone 23 has a U-shaped cross section that is shallower than the main bones 22A and 22B, and connects both the main bones 22A and 22B and the outer frame portion 21 thereof.

In the hood H configured as described above, the central part of the inner panel frame portion 21 on the open end side constitutes two closed cross sections that are integrated with each other over approximately half the length of the hood width, so that the rigidity is extremely high. Furthermore, since the center of the frame portion 21 on the side where it is attached to the engine room has a closed cross section, the rigidity is greatly improved.

Therefore, by simply extending the main bones 22A, 22B over both left and right sides of the hood H, the rigidity of the entire hood H can be made comparable to the conventional structure.

By doing away with the conventional main frame that passes through the center of the hood's width, the space above the engine becomes wider than before, giving greater freedom in designing the equipment around the engine. This allows it to be set at a lower position.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the present invention, and Figure 1 is a plan view of the hood viewed from the back side;
Figure 2 is a sectional view taken along the - line in Figure 1, and Figure 3 is a cross-sectional view of Figure 1.
FIG. 4 is a cross-sectional view of a portion of the conventional structure corresponding to FIG. 2 above. H...Hood, 1...Outer panel, 2...Inner panel, 21...Frame, 22A, 22B...Main frame, 23
... Small bone, 3... Striker, 4... Hood lock reinforcement, 5... Hood panel reinforcement, 6... Rear panel reinforcement, 7
a, 7b, 7c...Closed cross section.

Claims (1)

[Scope of utility model registration request] An automobile hood consisting of an outer panel, an inner panel having a frame along the outer periphery of the outer panel, and a main frame connecting the frames, one end of which is rotatably attached to the engine compartment opening, and a striker provided on the open end. A hood lock reinforcement is welded to the upper surface of the inner panel to which a striker is fixed at the center of the open end side and whose rear part forms an upright wall, and a panel-shaped hood panel is attached above the hood lock reinforcement. The reinforcement is welded to form a first closed section between both reinforcements, the hood panel reinforcement is extended rearward, and its rear end is welded to the rear upright wall of the inner panel to create a hood panel. A second section is installed between the reinforcement and inner panel.
On the other hand, a panel-shaped hood rear reinforcement is welded to the upper side of the frame of the inner panel at approximately the center of the side where it is attached to the engine room, and a third closed section is formed between the two. A hood for an automobile, characterized in that the inner panel is provided with a main frame that spans between a frame portion corresponding to both ends of the hood panel reinforcement and both rear corner angles of the frame portion.