JPH063689Y2 - Car body structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a vehicle body structure in which a skeleton member of a vehicle body can be used as a pipe for a circulation system of a fluid having heat such as engine cooling water or engine oil.

(Prior Art) In the conventional vehicle body structure, the internal space of the vehicle body frame member is
Those used as an exhaust pipe and those used as a fuel tank are known (for example, Japanese Utility Model Laid-Open No. 62-1200).
24, Japanese Utility Model Publication No. 62-166136).

(Problems to be solved by the present invention) However, in the former one of the conventional structures, in order to use the exhaust passage of the skeletal member as a circulation passage for a fluid such as oil or cooling water, a completely closed closed section is provided. In the case of the above-mentioned method, the joining of the member and the vehicle body floor constituting the skeleton member must be completed, and the work is troublesome and difficult.

In the latter case, the skeleton member is simply used for storing fuel and cannot be used as a fluid passage in the circulation system, and has a means for dissipating internal heat. Therefore, even if the fluid is used as a fluid passage for the circulation system, the fluid cannot be cooled.

An object of the present invention is to provide a vehicle body structure capable of utilizing a frame member of a vehicle body as a flow path of a circulation system and cooling a fluid flowing through the flow path.

(Means for Solving the Problem) In order to achieve the above-mentioned object, in the vehicle body structure of the present invention, the skeleton member constituting the skeleton of the vehicle body is formed by extrusion molding using an aluminum alloy as a hollow portion. And a fluid introduction hole for introducing the fluid from the heat generating portion of the vehicle into the closed space portion, the closed space portion being formed by closing the hollow portion at two places to form a closed space portion. An outer surface of the skeleton member at a position corresponding to the sealed space portion by forming a fluid outflow hole for discharging the fluid in the sealed space portion to the heat generating portion, and forming the sealed space portion as a part of a fluid circulation path. The heat radiation fins are formed on the.

An example of the heat generating portion of the vehicle is an engine. In this case, the fluid circulated in the heat generating portion is cooling water, engine oil, or the like.

Further, the heat radiation fin can also be used as a mounting member for a vehicle part mounted on the frame member.

(Operation) In the present invention, the fluid in the closed space of the skeletal member is delivered to the heat generating portion such as the engine through the fluid delivery hole, passes through the heat generating portion and is heated, and then is introduced again into the closed space portion through the fluid introducing hole. The fluid is circulated in such a manner that it flows through the closed space portion and is delivered from the fluid delivery hole to the heat generating portion.

Since the skeleton member is formed of an aluminum alloy having a high thermal conductivity, the skeleton member is cooled by heat radiation from the outer surface of the skeleton member, especially from the radiation fins, while the fluid flows through the sealed space. That is, the cooled fluid is always delivered from the liquid delivery hole to the heat generating portion.

(Embodiment) Hereinafter, a detailed description will be given based on an embodiment of the present invention shown in the drawings.

FIG. 1 is a perspective view showing a vehicle body structure according to a first embodiment of the present invention. An engine room ER is provided in the front part of a vehicle body 1 to which the structure of this embodiment is applied. An engine 2 and a radiator 3 are installed in.

The radiator 3 is supported by a radial core support upper 4 and a radial core support lower 5 as skeletal members. This radio core support lower 5 is formed by extrusion molding using an aluminum alloy as a material, and as shown in the drawing,
In addition to being formed in a closed cross-sectional shape having a hollow portion 51, a plurality of heat radiation fins 52 are formed at the front surface position on the outer peripheral portion, and a flange 53 which also functions as a heat radiation fin and a mounting flange is formed at the rear upper portion. ing. The lower portion of the radiator 3 is attached to the flange 53.

And, the hollow portion 51 of the radio core support lower 5 is
A closed space portion 56 is formed by being closed by the closing members 55, 55 at the vehicle width direction end position on the side where the radiator 3 is provided and at the position of the bent portion 54 on the opposite side.

The closed space portion 56 is used as a circulation path for the cooling water of the engine 2 (corresponding to the fluid in the claims). That is, at both end positions of the closed space portion 56, cooling water introduction holes 57 for introducing cooling water from the engine 2 as a heat generating portion into the closed space portion 56 via the radiator 3,
A cooling water delivery hole 58 for delivering cooling water from the closed space 56 to the engine 2 is opened. The engine 2 and the upper portion of the radiator 3 are connected by the first hose H1, and the radiator 3 and the cooling water introduction hole 57 are secondly connected.
The hose H2 is connected, and the cooling water delivery hole 58 and the engine 2 are connected by a third hose H3.

That is, a circulation path of the cooling water that returns from the engine 2 to the engine 2 through the closed space 56 of the radiator core support 5 through the radiator 3 is formed.

Therefore, the cooling water heated by cooling the engine 2 is first sent to the upper portion of the radiator 3, where it is radiated and cooled, and then the radiator core 3 is sealed from the lower portion of the radiator 3. After being introduced into the space 56 and further cooled by radiating heat there through the radiation fins 52 and the flanges 53, it is circulated to the engine 2.

As described above, in this embodiment, since the radial core support lower 5 is used as a part of the circulation path of the cooling water, the piping for it can be omitted, the number of parts and the gravity can be reduced, and moreover, Since the radiator core 52 is provided with the radiator fins 52 and the flange 53 in addition to the radiator support lower 5 made of an aluminum alloy having a high thermal conductivity, a high cooling effect can be obtained and the radiator 3 can be miniaturized.

Next, the vehicle body structure of the second embodiment shown in FIG. 2 will be described. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in this figure, the vehicle body 1 includes side member fronts 6L and 6R and side sills 7 on the left and right as frame members.
L and 7R are provided, and a cross member 8 is provided in the vehicle width direction. These frame members 6L, 6R, 7
Similarly to the first embodiment, L and 7R are formed by extrusion molding of aluminum alloy to have a closed cross-sectional shape having a hollow portion. Among them, the side member fronts 6L and 6R and the side sills 7L and 7R are Both ends are closed by the closing members 61 and 71 to form sealed spaces 62 and 72.

Further, the vehicle body 1 is provided with a radiator 3 at a front end portion thereof, while being provided with an engine 2 at a rear portion thereof.

Side member fronts 6L, 6R and side sills 7L, 7 provided between the engine 2 and the radiator 3
Similar to the first embodiment, the R closed space portions 62 and 72 are used as a part of the circulation path of the cooling water, and the engine 2 is provided on the inside surface of the rear end portion of the side sill 7R on the right side of the vehicle body. A cooling water introduction hole 73 for the cooling water delivered from is formed and is connected to the engine 2 by a first hose H1.

On the other hand, the closing member 71 at the front end portion of the side sill 7R is formed with a cooling water delivery hole 74, and the cooling water delivery hole 74 is formed on the vehicle outer surface at the rear end portion of the side member front 6R on the right side of the vehicle body. The cooling water introducing hole 63 is connected by a second hose H2.

On the other hand, a cooling water delivery hole 64 is formed in the vehicle inner side surface of the front end portion of the side member front 6R, and the cooling water delivery hole 64 is connected to the upper portion of the radiator 3 by a third hose H3. .

Then, the radiator 3 is provided with a fourth hose H4 for delivering the cooling water cooled here, and the fourth hose H4 is provided.
4 is connected to a cooling water introduction hole 65 formed in the vehicle inner surface at the front end of the side member front 6L on the left side of the vehicle body.

A cooling water delivery hole 66 is formed in the vehicle outer surface at the rear end of the side member front 6L, and a cooling water introduction hole 75 is formed in the closing member 71 at the front end of the side sill 7L on the left side of the vehicle body by the fifth hose H5. Connected with.

Then, the cooling water delivery hole 76 formed on the vehicle inner surface at the rear end portion of the side sill 7L and the engine form the sixth hose H6.
Connected through.

That is, the cooling water that has cooled the engine 2 is sent to the radiator 3 through the side sills 7R on the right side of the vehicle body and the closed spaces 72 and 62 of the side member front 6R, and after being cooled there, the side member front on the left side of the vehicle body. It is circulated to the engine 2 through 6L and the side sill 7L.

By the way, the side member fronts 6L, 6R and the side sills 7L, 7R are provided with a flange 6 that also serves as a mounting flange for mounting a radiator fin and a vehicle body component (not shown).
7, 77 are formed on the upper and lower sides, and the cooling water is cooled by the heat radiation by the flanges 67, 77.

FIG. 3 shows another example of the side sill as the third embodiment.

In the side sill 9, the inner hollow portion is divided into three, that is, a first hollow portion 91 on the outer side of the vehicle, a second hollow portion 92 on the upper side of the center of the vehicle body, and a third hollow portion 93 on the lower side thereof. An upper flange 94 and a lower flange 95 are formed on the upper and lower sides, and the harness 10 is provided at a substantially central position on the center side surface of the vehicle body.
A first hook 96 for fixing 1 is formed, and in addition, a second hook 97 for fixing the brake piping 102 is formed at a lower position thereof.

A floor panel F of the vehicle body is joined to the second hook 97.

Then, both ends of the second hollow portion 92 are closed by closing members (not shown), and are used as an oil circulation path between the oil cooler (not shown) and the engine. The third hollow portion 93 also has both ends (not shown). Blocked by a blocking member, as a circulation path for engine cooling water,
It's being used. Therefore, the upper and lower flanges 9
The reference numerals 4, 95 and the first and second hooks 96, 97 also serve as radiating fins and radiate heat from there.

(Effect of the Invention) As described above, in the vehicle body structure of the present invention, since the fluid circulation path is formed in the closed space portion of the skeletal member, piping members such as hoses and pipes are omitted or simplified. As a result, the vehicle layout can be rationalized, and the number of parts can be reduced to reduce the weight and cost.

Further, the skeleton member is formed of an aluminum alloy having a high thermal conductivity, and since the radiating fins are provided, the cooling effect of the fluid circulating in the hollow portion can be obtained. Furthermore, this effect can downsize or omit a cooling device such as a radiator, which can also reduce the number of parts, the weight, and the cost.

[Brief description of drawings]

FIG. 1 is a perspective view showing a vehicle body structure of a first embodiment of the present invention as seen from the front of the vehicle body, FIG. 2 is a perspective view showing the structure of the second embodiment as seen from the rear side of the vehicle body, and FIG. 3 is a third embodiment. It is sectional drawing which shows the side sill of a structure. DESCRIPTION OF SYMBOLS 1 ... Car body 2 ... Engine (heating part) 5 ... Radia core support lower (frame member) 51 ... Hollow part 52 ... Radiating fin 53 ... Flange (radiating fin) 55 ... Closing member 56 ... Sealed space part 57 ... Cooling water introduction hole 58 ... Cooling water delivery hole 6L, 6R ... Side member front (frame member) 7L, 7R ... Side sill (frame member) 61, 71 ... Closing member 62, 72 ... Sealed space 63, 65, 73, 75 ... Cooling water introduction Holes 64, 66, 74, 76 ... Cooling water delivery holes 67, 77 ... Flange (radiation fin) 9 ... Side sill (frame member) 92 ... Second hollow portion 93 ... Third hollow portion 94 ... Upper flange (radiation fin) 95 ... Lower flange (radiation fin) 96 ... First hook (radiation fin) 97 ... Second hook (radiation fin)

Claims (1)

[Scope of utility model registration request] 1. A skeleton member constituting a skeleton of a vehicle body is formed into a closed cross-section having a hollow portion by extrusion molding using an aluminum alloy as a material, and the hollow portion is closed at two places to form a closed space portion. The skeleton member is formed with a fluid introduction hole for introducing the fluid from the heat generating portion of the vehicle into the closed space portion, and a fluid outflow hole for flowing out the fluid in the closed space portion to the heat generation portion, A vehicle body structure characterized in that the closed space portion serves as a fluid circulation path, and a radiating fin is formed on an outer surface of the skeleton member at a position corresponding to the closed space portion.