JP2005161979A - Front structure of automobile body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a front structure of an automobile body capable of reducing blow-back of hot air through a clearance and preventing interference noise at the same time by reducing the clearance between a pipe on a heat exchanger side and a through hole in a radiator core support. <P>SOLUTION: In the front structure of the automobile body, a heat exchanger is mounted on a radiator core support 1, an end of a pipe (a radiator pipe 9) of the heat exchanger is connected to a connection pipe (a radiator hose 7) while being penetrated through and protruded from a through hole 8 in the radiator support 1. The end of at least the connection pipe (the radiator hose 7) is formed of an elastic material, and the end of the connection pipe (the radiator hose 7) is housed to the end of the pipe (the radiator pipe 9) of the heat exchanger so as to be interposed in a clearance between the through hole 8 and the pipe (the radiator pipe 9) of the heat exchanger. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vehicle body front structure, and more particularly, to a vehicle body front structure in which a pipe of a heat exchanger is connected to a connection pipe in a state of passing through a through hole of a radiator core support.

Conventionally, the radiator support in the front body structure of an automobile has been reviewed in the engine room in order to increase the size of the vehicle interior. As an example, a heat exchanger can be mounted on the front side of the radiator core support. In such an engine room, there is a merit that the engine and auxiliary equipment can be mounted just below the radiator core support, but in this case, the heat exchanger piping is connected to the radiator core support due to layout restrictions etc. There is a case where it is necessary to dispose the through hole in a state of passing through (see Patent Document 1).
JP 2000-18874 A

  However, in the conventional vehicle body front structure, as shown in FIG. 6, when the pipe of the heat exchanger is a radiator pipe, the radiator pipe 01 penetrates through the through hole 03 of the radiator core support 02 and protrudes. In this state, the rubber hose 04 is externally fitted to the rubber hose 04, and both of them are fastened by the clamp 05 to connect them. There is a problem that hot air on the rear side blows back to the radiator side through the gap 06, or interference noise is generated between the radiator pipe 01 and the through hole 03 due to the collision between the two.

  On the other hand, the through hole 03 must be formed with a diameter larger than that of the radiator pipe 01 so as to allow an error in product accuracy and mounting accuracy of the radiator pipe 01. It is practically impossible to completely eliminate the gap 03 by matching them.

  The present invention has been made to solve the above-described problems, and the object of the present invention is to reduce the gap between the pipe on the heat exchanger side and the through hole of the radiator core support, resulting from the gap. An object of the present invention is to provide a vehicle body front structure that can simultaneously reduce hot air blowback and prevent interference noise.

  In the invention according to claim 1 of the present invention, the end of the pipe of the heat exchanger mounted on the radiator core support is connected to the connection pipe in a state of protruding through the through hole of the radiator core support. In the vehicle body front structure, at least the end of the connection pipe is formed of an elastic material, and the end of the connection pipe is disposed at the end of the pipe of the heat exchanger so as to be interposed in the gap between the through hole and the pipe of the heat exchanger It is characterized in that both of them are connected by external fitting.

  2. The vehicle body front structure according to claim 1, wherein at least an end portion of the connection pipe is formed of an elastic material, and the end of the connection pipe is interposed in a gap between the through hole and the pipe of the heat exchanger. Since these parts are connected to the end of the heat exchanger piping, the gap between the radiator core support through-hole and the heat exchanger piping can be reduced, greatly reducing hot air blowback. And interference noise can be prevented at the same time.

  Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1 of the present invention will be described below.
1 is an exploded perspective view of a front body structure of an automobile according to an embodiment of the present invention, FIG. 2 is a rear perspective view of the front body structure of the automobile according to the present embodiment, and FIG. 3 illustrates a connection between a radiator pipe and a radiator hose. FIG.

As shown in FIGS. 1 and 2, the vehicle body front structure of the first embodiment of the present invention has a radiator core support 1 and a heat exchanger 2 as main components.
The radiator core support 1 is a carrier for mounting a heat exchanger 2 and the like, which will be described later, and the whole is integrally formed of resin.
A motor fan shroud 4 for mounting the fan 3 is provided at the center of the radiator core support 1.

The heat exchanger 2 includes a radiator 5 and a condenser 6, both of which are mounted on the front side of the radiator core support 1 in a state of being arranged in the front-rear direction.
Specifically, the capacitor 6 is provided with a bracket B1 provided on the left and right upper side on a bracket B2 provided on the left and right upper side of the radiator 5, and a bracket K1 provided on the lower left and right side on a left and right lower side (not shown) of the radiator 5. Each bracket is fixed.
On the other hand, the radiator 5 has upper and lower mounting portions (not shown) provided on the rear surfaces of the left and right tanks 5a and 5b fixed to the radiator core side 1c at four locations via fastening members such as bolts T.

  Further, in the radiator 5 of the present embodiment, the core 5c in which the tank 5a is the inlet side of the cooling medium, the outlet tank 5b is the outlet side of the cooling medium, and a plurality of fins and tubes are arranged between the tanks 5a and 5b. As shown in FIG. 1, the radiator pipe 7 (heat exchanger pipe) on the outlet side penetrates through the radiator core side 1 c due to layout restrictions when the vehicle is mounted on the radiator core support 1. The hole 8 is provided so as to protrude rearward.

That is, the radiator pipe 7 is disposed in the tank 5 b so as to penetrate the through hole 8 when the radiator 5 is mounted on the radiator core support 1.
On the other hand, the through hole 8 is formed to have a diameter larger than the diameter of the radiator pipe 7 so as to allow an error in mounting accuracy and product accuracy when the heat exchanger 2 is mounted on the radiator core support 1. The inner diameter of the through hole 8 in the example is formed to be somewhat larger than the outer diameter of a radiator hose 9 described later.

  When the radiator core support 1 is mounted on the vehicle, as shown in FIG. 3, the end of the radiator hose 9 (connection pipe) formed of an elastic member such as rubber disposed on the rear side is connected to the end. After being fitted on the end of the radiator pipe 7 so as to be interposed between the through hole 8 and the radiator pipe 7, both of them are fastened by a fastening member such as a clamp C.

  At this time, since the radiator hose 9 is interposed between the through hole 8 and the radiator pipe 7, the gap is smaller than that of the conventional invention, thereby reducing hot air blowback from the rear side (engine side). Further, it is possible to prevent an interference sound due to a collision between the through hole 8 and the radiator pipe 7 (corresponding to claim 1).

Embodiment 2 of the present invention will be described below.
In the vehicle body front structure of this embodiment, a protruding portion that protrudes rearward from the through hole described in the first embodiment is formed, and the protruding portion is overlapped with the end portion of the radiator hose. The other components are the same as those in the first embodiment, and the same components are denoted by the same reference numerals and the description thereof is omitted.
FIG. 4 is a side end view for explaining the connection between the radiator pipe and the radiator hose according to the second embodiment of the present invention.

As shown in FIG. 4, in the vehicle body front structure of the embodiment of the present embodiment, a cylindrical protruding portion 10 that protrudes rearward continuously from the through hole 8 formed in the radiator core support 1 is formed. In addition, the projecting portion 10 is provided so as to overlap the end portion of the radiator hose 9 (corresponding to claim 2).
Therefore, when the radiator pipe 7 or the radiator hose 9 is arranged, even if a slight error occurs in the front-rear direction, the gap between the through hole 9 and the radiator pipe 7 can be reliably reduced, and the hot air is blown back. Can be reduced and collision noise can be prevented.

Embodiment 3 of the present invention will be described below.
In the vehicle body front part structure of the automobile according to the present embodiment, a projecting portion projecting rearward is formed continuously to the through hole described in the second embodiment, and the projecting portion projects radially from the end of the radiator core hose. Since it is the same as in the first embodiment except that the stopper is formed and the protrusion is overlapped with the end of the radiator core hose with the stopper being in contact with the end of the protrusion, The same constituent members are denoted by the same reference numerals, and the description thereof is omitted.
FIG. 5 is a side end view for explaining the connection between the radiator pipe and the radiator hose according to the third embodiment of the present invention.

As shown in FIG. 5, in the vehicle body front structure of the automobile according to the present embodiment, a cylindrical protruding portion 10 that protrudes rearward continuously from the through hole 8 formed in the radiator core support 1 is formed. ing.
Furthermore, the stopper part 12 which protruded in the radial direction from the edge part of the radiator hose 9 is provided over the perimeter.

The radiator hose 9 and the radiator pipe 7 are connected in a state in which the stopper portion 12 is in contact with the end portion of the protruding portion 10 and the protruding portion 10 is overlapped with the end portion of the radiator core hose 9. ing.
In addition, it is preferable that the stopper portion 12 of the radiator hose 9 is in a state of elastically contacting the end portion of the protruding portion 10.
That is, when connecting the radiator hose 9 to the radiator pipe 7, if the radiator hose 9 is externally fitted to the end of the radiator pipe 7 until the stopper portion 11 of the radiator hose 9 comes into contact with the protruding portion 10. The positioning of the radiator hose 9 with respect to the radiator pipe 7 can be facilitated.
Moreover, since the sealing performance of the through hole 8 is improved, hot air blow-back can be further reduced, and at the same time, interference noise between the through hole 8 and the radiator pipe 7 can be prevented (corresponding to claim 3).
Furthermore, since the stopper portion 11 is formed over the entire circumference, the through hole 8 of the protruding portion 10 can be closed with the stopper portion 11, and the sealing performance of the through hole 8 can be further enhanced.

Although the present embodiment has been described above, the present invention is not limited to the above-described embodiment, and design changes and the like within a scope not departing from the gist of the present invention are included in the present invention.
For example, in the present embodiment, the case where the heat exchanger pipe is applied to the radiator pipe 7 has been described, but the present invention can also be applied to a condenser pipe.
Moreover, it can set suitably about the kind of clamp, and its fastening method.

It is a disassembled perspective view of the vehicle body front part structure of the automobile of Example 1 of the present invention. 1 is a rear perspective view of a vehicle body front structure of an automobile according to Embodiment 1. FIG. It is a side end view explaining the connection of the radiator pipe of Example 1 and a radiator core hose. It is a side end view explaining the connection of the radiator pipe of Example 2 and a radiator core hose. It is a side end view explaining the connection of the radiator pipe of Example 3, and a radiator core hose. It is a side end view after connecting a conventional radiator pipe and a radiator core hose.

Explanation of symbols

A, B Car body front structure B1, B2, K1 Bracket C Clamp S Stopper T Bolt 1 Radiator core support 1a Radiator core upper 1b Radiator core lower 1c Radiator core side 2 Heat exchanger 3 Fan 4 Motor fan shroud 5 Radiator 5a, 5b Tank 5c Core portion 6 Capacitor 7 Radiator pipe 8 Through hole 9 Radiator hose 10 Protruding portion 12 Stopper portion

Claims (3)

In the vehicle body front structure of the automobile connected to the connection pipe in a state where the end of the pipe of the heat exchanger mounted on the radiator core support protrudes through the through hole of the radiator core support,
At least the end of the connecting pipe is formed of an elastic material;
A vehicle body front portion of an automobile characterized in that an end portion of a connection pipe is externally fitted to an end portion of the pipe of the heat exchanger so as to be interposed in a gap between the through hole and the pipe of the heat exchanger. Construction. In the vehicle body front structure according to claim 1,
Forming a projecting portion projecting in the vehicle longitudinal direction continuously to the through hole;
A vehicle body front structure of an automobile, wherein the protruding portion is overlapped with an end of a connection pipe. In the vehicle body front part structure according to claim 2,
Forming a stopper portion projecting in the radial direction at an end of the connection pipe;
A vehicle body front structure for an automobile, wherein the protruding portion is overlapped with an end portion of a connection pipe in a state where the stopper portion is in contact with the end portion of the protruding portion.

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