JPH06227327A - Insulator structure of vehicle - Google Patents

Abstract

PURPOSE:To provide an insulator structure of a vehicle that is excellent in the noise insulating capacity of an insulator, in the case where an instrument module is adopted. CONSTITUTION:A part corresponding to an air-conditioning unit U of an insulator I is formed as a noise insulating cover body T in form covering a cab side of this air-conditioning unit U, and this noise insulating cover body T is installed in an instrument module M after being preinserted into space between the air-conditioning unit U and a steering member S.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle insulator structure, and more particularly to a vehicle insulator structure including an instrument module in which internal components are preassembled.

[0002]

2. Description of the Related Art As a conventional vehicle insulator structure, for example, a structure shown in FIG. 7 is known (see Japanese Patent Laid-Open No. 60-234073).

D is a dash panel, and engine room E
Is a partition wall that separates the vehicle from the vehicle compartment R. This dash panel D
The lower part of the is an inclined portion D _11, and the floor panel F extends rearward through the inclined portion D ₁₁ . A tunnel portion (not shown) is formed at the center of the floor panel F. A cowl panel C is provided above the dash panel D. Further, an insulator I for sound insulation is provided on the cowl panel C, the dash panel D, and the floor panel F on the vehicle compartment R side. Further, a carpet K is further laid on the insulator I at a portion corresponding to the inclined portion D ₁₁ of the dash panel D and the floor panel F. P is an instrument panel body, and an air conditioning unit U is attached to a dash panel D inside the instrument panel body. The pipes H ₃ and H ₄ of the air conditioning unit U are through holes a ₃ formed in the insulator I and the dash panel D,
It extends into the engine compartment E through a ₄ , b ₁ and b ₂ . In the air conditioning unit U, a plurality of devices are arranged in parallel along the vehicle width direction, and it is necessary to pass many pipes other than the pipes H ₃ and H ₄ to the engine room E side. A large number of a ₃ , a ₄ etc. are also formed.

[0004]

However, in such a conventional technique, since it is necessary to form many through holes a ₃ and a ₄ in the insulator I, the sound insulation performance of the insulator I deteriorates. May occur.

[0005] and the through-hole a _3, a ₄ ─ part, in such a shape changing portion D ₁₂ on the border of the inclined portion D ₁₁ of the dash panel D is easily raised float is insulator I, the insulator I float There is a possibility that the rising portion may flutter due to the traveling vibration or may interfere with the movable portion (for example, the movable link portion or the rotating shaft) of the air conditioning unit U, thereby degrading the performance of the air conditioning unit U.

Recently, an "instrument module" has been prepared in which internal components such as an air conditioning unit U and a steering member (not shown) have been assembled in advance on the instrument panel body P. A vehicle body structure in which a "module" is attached to the dash panel D has also been proposed. When such an "instrument module" is used, the air conditioning unit U
At the same time as mounting the instrument panel body P, it is necessary to pass a large number of pipes H ₃ and H ₄ provided at the same time through a plurality of through holes a ₃ and a ₄ formed in the insulator I at a time. If the through holes a ₃ and a _{4 of I} and the through holes b ₁ and b _{2 of the} dash panel D are not completely aligned, it is difficult to insert the pipes H ₃ and H _{4 as} described above. Therefore, when the "instrument module" is adopted, the air conditioning unit U
It is desired to improve the structure of the insulator I in the portion corresponding to.

The present invention has been made by paying attention to such a conventional technique, and when an "instrument module" is adopted, an insulator structure of a vehicle which has a good sound insulation performance of the insulator and a small rise is generated. It is provided.

[0008]

In order to achieve the above-mentioned object, a vehicle insulator structure according to the present invention has a structure in which a portion of the insulator corresponding to the air conditioning unit has a shape of sound insulation that covers the cabin side of the air conditioning unit. It has a structure in which it is formed as a cover body, and the soundproof cover body is attached by being sandwiched in advance between the air conditioning unit and the steering member in the instrument module.

[0009]

Since the insulator of the portion corresponding to the air conditioning unit is provided as a sound insulating cover on the passenger compartment side of the air conditioning unit, it is not necessary to provide a through hole for passing the pipe in the sound insulating cover. Therefore, since there is no through hole for inserting the pipe, the sound insulation performance is improved, and since there is no through hole, the insulator does not rise from this portion unlike the conventional case.

Further, since the sound insulation cover body is mounted by being sandwiched in advance between the air conditioning unit and the steering member in the instrument module, the sound insulation cover body is lifted up even after being mounted on the dash panel, There is no risk of interfering with the moving parts of the air conditioning unit.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to FIGS.
It will be described based on. The same parts as those in the prior art are designated by the same reference numerals, and a duplicate description will be omitted.

The dash panel D includes a dash lower panel D ₁ and a dash upper panel D ₂ . A cowl panel C is joined to the dash upper panel D ₂ to form a cowl box C ₁ having a closed cross-section structure. The joint C ₂ to the dash upper panel D ₂ and cowl panel C lower end of the front window panel W is supported. Further, as shown in FIG. 4, the joint C ₂ is provided with downward mounting brackets 1 at four locations along the vehicle width direction, and locate holes 2 are formed in each of the mounting brackets 1. An insulator I is provided from the dash upper panel D ₂ to the floor panel F. The insulator I is composed of a felt I ₁ and a skin I ₂ , and a portion corresponding to an air conditioning unit U described later is a cutout portion 3 as shown in FIG. The dash lower panel D ₁ exposed from the cutout portion 3 is formed with a plurality of through holes b _{1 to} b ₅ through which the pipes H ₃ and H _{4 of} the air conditioning unit U are inserted.

Next, the instrument module M will be described. This instrument module M has a structure in which an air conditioning unit U, a sound insulation cover body T, a steering member S, a harness (not shown), an air bag, an electronic unit and the like are integrally assembled inside the instrument panel body P. Has become.

The air conditioning unit U comprises a blower unit U ₁ ,
It consists of a cooler unit U ₂ and a heater unit U _3, and a plurality of pipes ─H ₃ and H
₄ ─ etc. are formed to project. An air inlet U ₁₁ for introducing air from an opening (not shown) formed in the bottom surface of the cowl box C ₁ is provided on the upper portion of the blower unit U ₁ . On the upper portion of the cooler unit U _{2 on} the vehicle compartment R side, a bayonet-shaped pad portion U ₂₁ for sandwiching a part of the sound insulation cover body T with the steering member S is formed. An air outlet U ₃₁ is formed on the rear surface of the heater unit U ₃ . Further, mounting pieces 4 corresponding to the plurality of mounting brackets S ₁ of the steering member S are provided at various places of the air conditioning unit U.

The sound insulation cover body T has a shape and size capable of covering the passenger compartment R side of the air conditioning unit U, and a flange T ₁ that spreads outward is formed at the opening edge portion on the air conditioning unit U side. . The sound insulating cover member T, as well as insulator I provided to the dash lower panel D ₁ felt I ₁
And a skin I ₂ and in particular, only the skin I ₂ extends upward from the upper flange T ₁ portion. still,
Also on the lower side of the sound insulation cover body T, there is a portion in which only the skin I ₂ extends downward (see FIG. 5). Also, the upper flange T ₁
A notch T ₁₁ is formed in a portion corresponding to the contact portion U ₂₁ . Further, an opening T ₂ having a shape corresponding to the air outlet U ₃₁ of the heater unit U ₃ is formed on the surface of the sound insulation cover body T on the vehicle compartment R side.

Brackets S ₂ and S ₃ attached to a front pillar (not shown) are provided at both ends of the steering member S, and a pair of stays S ₄ is provided at the central portion. On the right side portion of the steering member S, the column bracket S ₅ for supporting a steering column (not shown) is provided.

The instrument panel body P is formed with openings P _{1 on the} left and right for taking out both ends of the steering member S. Further, four locate pins P ₂ are provided on the upper edge portion, and a flange P ₂₁ is formed at an intermediate portion of the locate pin P ₂ . The instrument panel body P is attached to the steering member S by fastening means (not shown).

As shown in FIG. 2, the instrument module M of this embodiment is formed by first integrating the air conditioning unit U, the soundproof cover body T, and the steering member S and attaching them to the instrument panel body P. . Particularly, in terms of sound insulation, a portion corresponding to the air conditioning unit U is a sound insulation cover body T, which is a separate component separated from the normal insulator I, and is sandwiched between the air conditioning unit U and the steering member S in the instrument module M. It is characterized in that it goes out. Then, the instrument module M thus formed is attached to the dash panel D of the vehicle body.

Next, the sound insulation cover body T with the instrument module M attached to the dash panel D
The processing state of each terminal will be described. In the contact portion U ₂₁ of the cooler unit U ₂ (see FIG. 3), the sound insulation cover body T is just provided between the contact portion U ₂₁ and the steering member S.
Since a uniform gap d corresponding to the thickness of
The sound insulation cover body T is sandwiched in this portion. Therefore, the sound insulation cover body T does not rise up.
Further, a lock piece 5 is provided on the lower surface of the cooler unit U ₂ , and the lock piece 5 is passed through the lower portion of the sound insulation cover body T and then bent to fix this portion. The skin I ₂ extended to the upper side of the sound insulation cover body T is sandwiched between the mounting bracket S ₁ on the steering member S side and the mounting piece 4 on the cooler unit U ₂ side, and the bolt / nut means 6 is provided.
It has been concluded in.

Further, the upper portion of the sound insulation cover body T other than the contact portion U ₂₁ is sandwiched between the mounting bracket 1 whose outer skin I ₂ is joined to the dash upper panel D ₂ and the flange P ₂₁ of the locate pin P ₂ . It is in a state (see FIG. 4). At locating pin P ₂ of the flange P _21, the positional relationship in the front-rear direction of the upper edge of the instrument panel body P with respect to the mounting bracket 1 is always kept constant.

In the portion where the mounting bracket 1 is not provided,
Epidermal I ₂ of the upper sound insulation cover T is in a state along the joint C ₂ to the dash upper panel D ₂ and cowl panel C (see FIG. 5). Further, the skin I ₂ extending to the lower side of the sound insulation cover body T is located just in the vicinity of the shape change portion D ₁₂ of the dash lower panel D ₁ , and the outer skin I ₂ below the sound insulation cover body T is originally formed. The upper surface of the carpet K is further overlapped on the outer skin I ₂ of the insulator I. Then, the three superposed parts, by bending through the engaging piece 7 formed in the dash lower panel D _1, securing the terminal in the state of being in close contact with the dash lower panel D _1. Therefore, the insulator I near the shape change portion D ₁₂
The sound-insulating cover body T is reliably prevented from rising.

In addition, as shown in FIG. 6, the heater unit U ₃
Since the rear duct 8 is inserted and attached to the air outlet U ₃₁ formed in, the end of the opening T ₂ of the sound insulation cover body T is pressed by the rear duct 8,
Rising is prevented. The side end of the sound insulation cover body T corresponds to the corresponding side end of the original insulator I.

According to this embodiment, since the sound insulation cover body T is located on the passenger compartment side of the air conditioning unit U, the sound insulation cover body T itself passes through the pipes H ₃ and H ₄ of the air conditioning unit U. There is no need to provide a through hole for the purpose. Only the opening T ₂ for the air outlet U ₃₁ is formed in the sound insulation cover body T, but the sound insulation performance is surely improved as compared with the conventional case where a large number of through holes are provided.

[0024]

The insulator structure of the vehicle according to the present invention has the contents as described above, and the insulator of the portion corresponding to the air conditioning unit is provided as the sound insulation cover on the passenger compartment side of the air conditioning unit. Therefore, it is not necessary to provide a through hole for passing the pipe in the sound insulating cover body. Therefore, since there is no through hole for inserting the pipe, the sound insulation performance is improved, and since there is no through hole, the insulator does not rise from this portion unlike the conventional case.

Further, since the sound insulation cover body is attached by being sandwiched in advance between the air conditioning unit and the steering member in the instrument module, the sound insulation cover body is lifted up even after being attached to the dash panel, There is no risk of interfering with the moving parts of the air conditioning unit.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an insulator structure of a vehicle according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an assembled state of the instrument module.

3 is a cross-sectional view taken along the line SA-SA shown in FIG.

FIG. 4 is a cross-sectional view taken along the line SB-SB shown in FIG.

5 is a cross-sectional view taken along the line SC-SC shown in FIG.

FIG. 6 is a cross-sectional view taken along the line SD-SD shown in FIG.

FIG. 7 is a cross-sectional view showing a conventional vehicle insulator structure.

[Explanation of symbols]

U Air-conditioning unit S Steering member P Instrument panel body M Instrument module E Engine room R Cabin D Dash panel I Insulator T Sound insulation cover U ₂₁ Abutment part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuyoshi Naruto Nissan Motor Co., Ltd. 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Prefecture (72) Kenichiro Maemura 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. In-company (72) Inventor Shuichi Koide 2 Takara-cho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan Motor Co., Ltd.

Claims (2)

[Claims] 1. An instrument module, in which at least an air conditioning unit and a steering member are assembled to an instrument panel body, is attached to a dash panel that separates an engine room and a vehicle compartment, and an insulator is provided on the vehicle compartment side of the dash panel. In the insulator structure of the vehicle, the portion of the insulator corresponding to the air conditioning unit is:
An insulator for a vehicle, characterized by being formed as a sound insulation cover body having a shape that covers the passenger compartment side of the air conditioning unit, and the sound insulation cover body being attached by being sandwiched in advance between the air conditioning unit and the steering member in the instrument module. Construction. 2. The insulator structure for a vehicle according to claim 1, wherein the air conditioning unit is provided with a pad portion having a concave cross section for sandwiching the sound insulation cover body with the steering member.