JP2001055167A - Support structure of hollow chamber intercepting fixture in hollow structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mount a hollow chamber intercepting fixture in a hollow structure in a stable condition without giving a flaw to a design surface or the like of the hollow structure. SOLUTION: This support structure of a hollow chamber intercepting fixture 10 in a hollow structure 1, foam expanding a foaming base material 11 by external heating in a hollow chamber 6 of the hollow structure 1 formed as a foaming unit, shields the hollow chamber 6 by this foaming unit. The hollow chamber intercepting fixture 10 is supported by a support member 4 fixed to an inner side of the hollow structure 1. In this way, the hollow chamber intercepting fixture 10 can be mounted in the hollow structure 1 in a stable condition without giving a flaw to a design surface D or the like of the hollow structure 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support structure for a hollow chamber shut-off device for shutting off a hollow chamber of a hollow structure by foaming and expanding a foamable base material by external heating to form a foam.
In particular, the present invention relates to a support structure of a hollow-chamber shutoff device in a hollow structure for enhancing the effect of damping and soundproofing hollow panels such as pillars, rocker panels, and roof side panels of a vehicle body.

[0002]

2. Description of the Related Art Generally, a hollow chamber shutoff device 120 is shown in FIG.
As shown in FIG. 2, a pair of plate-like holder bodies 122 are provided to be attached to the hollow chamber 106 of the hollow structure 101, and the foamable base material 1 is sandwiched between the holder bodies 122.
21 are supported (see FIG. 4B). The foamable base material 121 expands and expands in a direction along the holder body 122 by external heating to form a foam body 131, as shown in FIG.
As shown in the figure, the hollow chamber 106 is shut off. This improves the effects of the hollow structure 101 such as vibration suppression and soundproofing.

[0003] A foam base material 121 is provided on the holder body 122.
The locking clip 124 is formed integrally over the
The locking clip 124 is attached to the mounting hole 1 of the hollow structure 101.
The holder body 122 is attached to the hollow chamber 106 of the hollow structure 101 by passing the holder body 122 through the hole 04. here,
FIG. 4A shows an example in which the hollow chamber blocking member 120 is attached to the hollow chamber 106 of the hollow structure 101 with one locking clip 124, but the hollow chamber blocking member 120 is elongated and shaped like a strip. Is complicated, the hollow chamber blocking member 120 is attached to the hollow structure 101 in a well-balanced manner using a plurality of locking clips 124.

[0004]

As described above, the hollow chamber blocking member 120 is connected to the hollow structure 101 by the locking clip 124.
When mounted in the hollow chamber 106, the hollow structure 1
01 must be formed with a mounting hole 104 through which the locking clip 124 passes. However, the mounting hole 104 cannot be provided at an arbitrary position to impair the aesthetic appearance of the hollow structure 101. That is, the mounting hole 104 must be formed at a position avoiding the design surface or the like of the hollow structure 101. For this reason, the mounting hole 104 may not be arranged at an appropriate position in consideration of the support balance of the hollow chamber blocking member 120, and the hollow chamber blocking member 1 for the hollow structure 101 may not be provided.
The mounting stability of 20 decreases.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and uses a member other than the hollow structure to support the hollow chamber blocking member, thereby damaging the design surface or the like of the hollow structure. SUMMARY OF THE INVENTION It is an object of the present invention to make it possible to attach a hollow chamber blocking device to a hollow structure in a stable state.

[0006]

The above object is attained by a support structure for a hollow chamber shutoff in a hollow structure according to the present invention. According to the present invention, since the hollow chamber blocking device is supported by the support member fixed inside the hollow structure, the hollow chamber blocking device is stably mounted without damaging the design surface or the like of the hollow structure. Can be mounted on

[0007] The above-mentioned problem is solved by a supporting structure for a hollow chamber blocking device in a hollow structure according to the present invention. ADVANTAGE OF THE INVENTION According to this invention, since a hollow body blocker is connected to the support member by foam covering a main part of a support member, even if it is impossible to connect with a locking clip and a mounting hole, a hollow-blocker blocker Can be favorably supported.

[0008] The above-mentioned problem is solved by a support structure for a hollow chamber blocking device in a hollow structure according to the third aspect. According to the present invention, since the foamable base material efficiently expands and expands from the opening formed in the holder body toward the main part of the support member, the amount of the foamable base material can be minimized.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A support structure for a hollow-chamber shut-off device in a hollow structure according to one embodiment of the present invention will be described below with reference to FIGS. The hollow structure according to the present embodiment is a quarter pillar 1 constituting a vehicle body.
As shown in FIG. 1, it is composed of an inner panel 2, an outer panel 3, and a reinforcement 4 as a reinforcing member. The inner panel 2 and the outer panel 3 are formed in a hollow box-shaped closed section by spot welding the flange portions 2f, 3f of each other. The reinforcement 4 is formed in a substantially trapezoidal cross section, and its flange 4f is spot-welded to a predetermined position on the inner wall surface of the inner panel 2. Here, the D range of the inner panel 2 and the D range of the outer panel 3 constitute a design surface of the quarter pillar 1.

At a predetermined position away from the design surface D of the inner panel 2, a non-circular or elliptical or other non-circular mounting hole 2k into which a first locking clip 14 of a hollow chamber shut-off device 10 described later is fitted. Has been established. In addition, a non-circular mounting hole 4k into which the second locking clip 24 of the hollow chamber closing device 10 is fitted is formed through the upper surface 4u of the reinforcement 4. Further, a pair of plate-shaped support pieces 4s project from the flange portion 4f of the reinforcement 4 located on the design surface D side of the inner panel 2 toward the center of the space, and the hollow pieces are formed by the support pieces 4s. Circuit breaker 1
0 is sandwiched (see FIGS. 1B and 2).

The hollow chamber blocking device 10 is a quarter pillar 1
Is a member for shutting off the hollow chamber 6 defined by the inner panel 2, the outer panel 3, and the reinforcement 4, and comprises a foamable base material 11 and the foamable base material 11.
And a holder body 12 for restricting the foaming direction. The foamable base material 11 is formed of a synthetic resin-based foamable material (preferably a foamable material having metal adhesiveness) mixed with a foaming agent that expands and expands at a temperature of about 110 ° C to 190 ° C. The foamable base material 11 is a plate having a predetermined thickness, and is formed so that the shape thereof approximates the shape of a cross section orthogonal to the longitudinal direction of the hollow chamber 6. In addition, the size of the foamable base material 11 is set to a size at which an appropriate gap (a gap that allows the paint to pass) is formed between the foamable base material 11 and the inner peripheral wall surface of the hollow chamber 6.

The holder body 12 has a pair of holder plates 12p sandwiching the foamable base material 11 in the thickness direction, and first holder plates 12p connected to the inner panel 2 and the mounting holes 2k, 4k of the reinforcement 4. The locking clip 14 and the second locking clip 24 are provided. Each holder plate 12p is formed into a shape substantially equal to the foamable base material 11, and its size is set to be substantially the same as or slightly smaller than the foamable base material 11.

Each holder plate 12p has:
Two triangular openings 12k are formed side by side at a position between the pair of support pieces 4s of the reinforcement 4. The shape of the opening 12k is not limited to a triangle, but may be a square, a circle, or the like. The first locking clip 14 and the second locking clip 24 include pedestal portions 14d, 24d connecting the peripheral portions of both holder plates 12p, and the pedestal portions 14d.
d, 24d projecting from the lower surface and extending in the direction of the center of the mounting holes 2k, 4k, legs 14a, 24a;
Elastic locking pieces 14t, 24 extending in a folded shape from both sides of the tip of 24a and elastically engaging with mounting holes 2k, 4k.
t.

The holder plate 12p, the first locking clip 14 and the second locking clip 24 are made of heat-resistant synthetic resin (thermoplastic synthetic resin), and are integrally formed by injection molding. The foamable base material 11 is set on the holder body 12 manufactured in this manner, and
0 is completed. The holder plates 12p are connected by a connecting member (not shown) so that the distance between the holder plates 12p does not increase when the foamable base material 11 expands and expands.

Next, a procedure for supporting the hollow chamber blocking member 10 in the hollow structure (the quarter pillar 1) according to the present embodiment will be described. First, the flange portion 4f of the reinforcement 4 is placed at a predetermined position on the inner wall surface of the inner panel 2.
Are spot welded. Next, as shown in FIG.
The hollow chamber shut-off device 10 is arranged between the support pieces 4s of the reinforcement 4 and the first locking clip 14 of the hollow chamber shut-off device 10 is attached to the mounting hole 2k of the inner panel 2, and
The second locking clip 24 is fitted into the mounting hole 4k of the reinforcement 4. Thereby, the hollow chamber blocking device 1
Numeral 0 is attached to the inner panel 2 and the reinforcement 4 at a location away from the design surface D of the inner panel 2.

Next, the inner panel 2 and the outer panel 3 are spot-welded to each other at the flanges 2f and 3f to form a quarter pillar 1 having a hollow box-shaped closed cross section. When the vehicle body having the quarter pillar 1 is formed in this manner, the vehicle body is baked. And, by the external heating at the time of the baking coating, the foamable base material 11 of the hollow chamber closing device 10 is
As shown in FIGS. 3A and 3B, the foam 21 expands to form a foam 21.

Since the foamable base material 11 is sandwiched from both sides by the holder plate 12p of the holder body 12, foaming of the foamable base material 11 in the direction along the holder plate 12p is effectively promoted. For this reason, the foam 21 generated by the foaming of the foamable base material 11 adheres firmly and satisfactorily to the inner peripheral wall surface of the hollow chamber 6 of the quarter pillar 1, and the hollow chamber 6 becomes the foam 21 of the hollow chamber shutoff 10. Cut off by

The holder plate 12p has an opening 12 at a position between the support pieces 4s of the reinforcement 4.
Since k is formed, foaming of the foamable base material 11 is also promoted in a direction in which the foamable substrate 11 is extruded from the opening 12k. Thereby, the foam 21 formed by foaming the foamable base material 11 covers the support piece 4s of the reinforcement 4, and the foam 21
Thereby, the hollow chamber blocking device 10 is connected to the support piece 4s of the reinforcement 4. That is, the reinforcement 4 functions as a support member of the present invention, and the support piece 4s of the reinforcement 4 corresponds to a main part of the support member.

As described above, according to the present embodiment, the hollow chamber shut-off device 10 can be supported in the hollow chamber 6 of the quarter pillar 1 by the reinforcement 4 that reinforces the quarter pillar 1, so that the design of the quarter pillar 1 is improved. The hollow chamber shut-off device 10 can be mounted in the hollow chamber 6 in a stable state without damaging the surface D or the like. Also, since the foam 21 generated by the foaming of the foamable base material 11 covers the support piece 4 s of the reinforcement 4, the hollow chamber blocking device 10 is connected to the reinforcement 4. The hollow-chamber shut-off device 10 can be favorably supported even in a portion where connection by a hole is impossible.

Further, since the foamable base material 11 efficiently expands and expands from the opening 12k formed in the holder plate 12p toward the support piece 4s of the reinforcement 4, the amount of the foamable base material 11 can be minimized. Can be limited. Here, in the present embodiment, an example is shown in which an opening 12k is provided in the holder plate 12p of the holder body 12 and the foam 21 is guided to the support piece 4s of the reinforcement 4, but the holder plate 12p is notched or the like. To form a foam 21
Can be led to the support piece 4s.

Also, in the present embodiment, the hollow chamber blocking device 1
Although the example in which 0 is supported from both sides by the support pieces 4s of the reinforcement 4 has been described, a method in which 0 is supported from one side is also possible. Further, in the present embodiment, an example is shown in which the foamable base material 11 is sandwiched from both sides by the holder plate 12p to constitute the hollow chamber blocking device 10, but only one side of the foamable base material 11 is restrained by the holder plate 12p. This is also possible. At this time, one side of the foamable base material 11 not restrained by the holder plate 12p is
May be directly supported by the support piece 4s.

Further, in this embodiment, an example has been shown in which the holder body 12 is integrally formed by injection molding of a resin.
May be used. Further, in the present embodiment, the hollow chamber blocking device 1 is
Although the example in which the reinforcement 4 is supported has been described, it is also possible to weld a support panel or the like to the inside of the hollow structure at a portion where the reinforcement 4 does not exist, and to support the hollow chamber blocking device 10 with the support panel or the like. .

In this embodiment, an example in which the present invention is applied to a quarter pillar of a vehicle body has been described. However, the present invention can be applied to a hollow structure such as a rocker panel and a roof sand panel of a vehicle body. It is. In addition, the present invention can also be applied to a hollow structure other than a vehicle body, for example, a building such as a building or a ship.

[0024]

According to the present invention, it is possible to mount the hollow chamber shut-off device on the hollow structure in a stable state without damaging the design surface or the like of the hollow structure. The properties are improved.

[Brief description of the drawings]

FIG. 1 is a side view (FIG. 1A) showing a support structure of a hollow breaker in a hollow structure according to one embodiment of the present invention, and is a view taken in the direction of arrows BB in FIG.

FIG. 2 is a perspective view showing a support structure of a hollow blocking device in a hollow structure according to one embodiment of the present invention.

FIGS. 3A and 3B are a side view (A) showing a state after foaming of the foamable base material used in one embodiment of the present invention, and a view taken in the direction of arrows BB in FIG.

FIG. 4 is a side view (A) showing a support structure of a conventional hollow barrier.
FIG. 3 is a cross-sectional view taken along the line BB of FIG. A, and a cross-sectional view taken along the line BB of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Quarter pillar (hollow structure) 4 Reinforcement (support member) 4s Support piece (main part) 10 Hollow chamber blocker 11 Foamable base material 12 Holder body 12p Holder plate 12k Opening 14 First locking clip 21 Foam 24 Second locking clip

Claims (3)

[Claims] 1. A support structure for a hollow-room shut-off device, wherein a foamable base material is foamed and expanded by external heating in a hollow chamber of a hollow structure to form a foam, and the foam blocks the hollow chamber. A supporting member fixed to the inside of the hollow member, wherein the hollow chamber blocking device is supported by the supporting member. 2. The support structure for a hollow-chamber shutoff device in a hollow structure according to claim 1, wherein the foam covers a main part of the support member, so that the hollow-chamber shutoff device is connected to the support member. A support structure for a hollow-room blocking device in a hollow structure. 3. The support structure for a hollow-chamber blocking device in a hollow structure according to claim 2, wherein the hollow-chamber blocking device includes a holder body that restricts a foaming direction of a foamable base material. A support structure for a hollow chamber blocking device in a hollow structure, wherein the base material expands and expands from an opening formed in the holder body toward a main part of the support member.