JPS63247175A - Body structure of engine room - Google Patents

Abstract

PURPOSE:To increase the opening area of an engine room by forming a part which extends out of a tail gate covering the upper part of a maintenance lid, on said maintenance lid as a cover for covering said engine room which is provided in the rear of a body. CONSTITUTION:In a midship type automobile, and the like, a maintenance lid 3 as a cover for covering an engine room 2 is provided on the top in the rear of a body. And, one side 3a of the lid 3 is rotatably installed, thereby, forming an engine room 2 openably and closably. On the other hand, a tail gate 4 is rotatably installed on the roof 9 of a body 1 so as to cover the lid 3. In this structure, with respect to the plane of projection of the gate 4 to the lid 3 from the upper part, parts 3b, 3c which extend out the plane of projection are formed in the rear and on both sides of the lid 3. Thereby, the opening area of the engine room 2 can be increased irrespective of the design of the gate 4.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to the body structure of an automobile, and particularly to the body structure around the engine room.

(Prior Art) As shown in FIG. 7, an automobile in which an engine 2a is mounted at the rear of a vehicle body 1 is known, for example, as a so-called midship vehicle. In this type of vehicle, a maintenance lid 3 that can be opened and closed with respect to the vehicle body 1 is located above the rear engine compartment 2.
This is provided. Furthermore, as shown in the same figure, there is one in which the upper part of the maintenance lid 3 is covered with a tailgate 4 made of glass. In this case, as shown in FIG. 8, the maintenance lid 3 is shaped to fit within the tailgate 4. Such a structure is desirable in terms of design and aerodynamic properties.

(Problems to be Solved by the Invention) However, with this configuration, the opening area of the lid 3 cannot be sufficiently secured, making it inconvenient to work around the engine. In addition, hot air and engine noise leaking from the seal around the maintenance lid tend to get trapped inside the tailgate. For example, as shown in FIG. 9, a duct 13 is provided in this type of lid 3, and this duct 13 can be connected to an opening 11 provided on the vehicle body 1 side with a connecting vibrator 12, so that cooling is carried out inside the engine room 2. There is one that allows air to be pumped into it. In this case, the connecting pipe 12 and the like must be prepared, and cooling performance may deteriorate due to deterioration of the connecting portion.

Furthermore, the cooling system in the engine room was complicated.

Therefore, it is an object of the present invention to provide a vehicle body structure for an engine compartment that allows for a large opening in the engine compartment regardless of the design of the tailgate, and also allows for a simple cooling structure.

(Means and effects for solving the problem) In order to solve this problem, according to the present invention, the engine room 2
is arranged at the rear of the vehicle body, and a maintenance lid 3 and 1. which are provided on the rear upper surface of the vehicle body and can be opened and closed relative to the vehicle body 1 for maintenance of the engine. In a vehicle body structure including a tailgate 4 that covers the maintenance lid 3 and is attached so that at least a portion thereof can be opened and closed, the maintenance lid 3 is located outside the projection plane of the tailgate 4 from above with respect to the maintenance lid 3. It has extending portions 3b and 3c that project out.

According to such a configuration, the maintenance lid can be enlarged to increase the opening area of the engine compartment regardless of the design of the tailgate, and an air circulation port can be provided in the extended portion.

(Embodiments of the Invention) The present invention will be described in detail below with reference to the accompanying drawings. In addition, the same reference numerals in each drawing indicate the same objects.

FIG. 1 shows the rear of a vehicle according to an embodiment of the invention. According to the figure, a maintenance lid 3 serving as a cover for covering an engine room 2 is disposed on the rear upper surface of a vehicle body 1 and is made of the same material as the vehicle body or a similar material.

This maintenance lid 3 has a substantially rectangular shape, extends to the peripheral edge of the body 1, and has a necessary and sufficient opening for the engine room 2. Also, one side of the maintenance lid 3 having a substantially rectangular shape, for example, the front side portion 3g of the vehicle.
is rotatably fixed with a hinge (not shown), and the engine room 2 can be opened and closed.

The tailgate 4 covers this maintenance lid 3.
is rotatably fixed to the roof 9 of the vehicle body 1. Here, as can be seen from the drawing, when the tailgate 4 is closed, that is, when the tailgate 4 is lowered onto the lid 3, the lid 3 is stretched over the portion 3a included in the gate 4 and its surroundings. It has extending portions 3b and 3c. That is, the parting line of the lid 3 is outside the parting line of the gate 4, and the area of the lid 3 is made larger than the projected area of the tailgate 4 with respect to the lid 3, and the rearward extending portion 3b and both sides are so that an extended portion 3C is formed. FIG. 2 shows the maintenance lid 3 and tailgate 4 lifted and opened.

FIG. 3 shows another embodiment of the present invention, and shows the first embodiment.
Opening portions 5b and 5 that communicate with outside air are respectively connected to the extending portions 3b and 3c of the maintenance lid 3 in the illustrated embodiment.
It forms c. According to various experiments, the ram pressure is positive near the rear extension portion 5b of the tailgate 4, and the ram pressure is negative near the lateral extension portion 5C of the tailgate 4. It is known. For this reason, the opening portion 5b formed in the extending portion 3b is used as an inlet for cooling air, and a part of the frame material for constructing the lid 3 is connected to a duct 6 as shown in FIGS. 4 and 5. For example, the open end 6b of the duct 6 is positioned so that the cool air from the duct 6 hits the engine intake pipe, so that cooling air can be sent to the engine.

In addition, the opening portion 5c formed in the extension portion 3c is used as a hot air outlet, and a part of the frame material for constructing the lid 3 is also used as a hot air vent duct 6 that similarly utilizes running negative pressure. None.This duct 6 is arranged independently on the left and right sides to prevent the hot air removal efficiency from decreasing due to the imbalance of negative pressure on the left and right sides of the vehicle body, and the high temperature air in the engine room 2 is routed through this duct 6. It is to be released from an opening @6a provided near the exhaust pipe of the engine. In this case, as shown in FIG. 5(a), cooling air naturally flows into the engine room 2 from the opening 5b while the vehicle is running, but the amount of air flowing in decreases when the vehicle is running at low speed or when the vehicle is stopped. For this reason, it is desirable to provide a cooling fan 9 in the middle of the duct 6, as shown in FIG. 5(b).

In each of the above embodiments, a case has been described in which the extension portions 3C of the maintenance lid 3 are formed on both sides of the tailgate 4, but as shown in FIG. You can also use it as Furthermore, although the tailgate 4 has been described as being made of glass and can be opened and closed in its entirety, the present invention can also be applied to a structure that can be partially opened and closed, such as a louver. Therefore, in this specification, the tailgate has a broad concept of something that can cover a part of the maintenance lid.

(Effects of the Invention) According to the present invention, since the maintenance lid is provided so as to protrude outside the tailgate as described above, it is possible to obtain a vehicle body structure of the engine compartment that has the following effects.

(1) Regardless of the tailgate design, the opening area of the engine room can be increased.

(2) Since the seal portion around the maintenance lid can be exposed to the outside of the vehicle, it is possible to effectively reduce hot air and engine noise from being trapped inside the tailgate.

(3) By forming an opening in the extending portion of the maintenance lid, a cooling structure with high cooling efficiency can be achieved with a simple configuration without requiring a connecting pipe or the like.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the vehicle body structure of the engine room according to an embodiment of the present invention, FIG. 2 is a perspective view showing the state in which the tailgate 4 and maintenance lid 3 in FIG. 1 are opened, and FIG. FIG. 4 is a perspective view showing the vehicle body structure of the engine room according to another embodiment of the invention, FIG. 4 is a plan view showing the structure of the maintenance lid according to the embodiment of FIG. b) are lines A-A and B-B in FIG. 4, respectively, showing the operation of the maintenance lid according to the embodiment of FIG.
6 is a perspective view showing a vehicle body structure of an engine room according to a modified example of the embodiment of the present invention; FIG. 7 is an explanatory view showing a state of a vehicle having an engine at the rear of the vehicle body; FIG. FIG. 9 is an explanatory diagram showing the relationship between a conventional maintenance lid and a tailgate, and FIG. 9 is an explanatory diagram of a conventional cooling structure incorporated in the maintenance lid. In the drawings, 1 is a vehicle body, 2 is an engine room, 3 is a maintenance lid, 3b and 3c are extensions, 4 is a tailgate, 5 is an opening, and 6 is a ventilation passage.

Claims (2)

[Claims] (1) The engine room is located at the rear of the vehicle body, and there is a maintenance lid provided on the rear upper surface of the vehicle body that can be opened and closed relative to the vehicle body for maintenance of the engine, and a maintenance lid that covers the maintenance lid and at least a portion of which can be freely opened and closed. A vehicle body structure of an engine compartment, characterized in that the maintenance lid has an extending portion projecting out of a projection plane from above with respect to the maintenance lid of the tailgate. . (2) In the vehicle body structure according to claim 1,
The vehicle body structure of the engine room, wherein the maintenance lid includes an opening portion communicating with outside air in the extending portion, and a ventilation passage communicating the opening portion with the engine room.