JP2002073035A - Hollow chamber interrupting implement for hollow structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hollow chamber interrupting implement mountable on a hollow structure without providing a mounting hole in the hollow structure. SOLUTION: The hollow chamber interrupting implement for hollow structure is composed of a pair of foaming suppressing boards 2a and 2b and a foamable base material 3 interposed and held between them. The foaming suppressing board 2a is provided with holding clips 4a to 4d. The holding clips 4a to 4d are inserted into through holes 6a to 6d to join the foamable base material 3 with the foaming suppressing board 2a. Besides, the foamable base material 3 is interposed and held between the foaming suppressing boards 2a and 2b by engaging the holding clips 4a to 4d with the holding holes 5a to 5d. The foaming suppressing board 2a is provided with a storage groove for storing a spring 8 and slide pins 7a and 7b which composes a mounting means. The hollow chamber interrupting implement is attached in the hollow chamber of the hollow structure by projecting the slide pins 7a and 7b with the repulsive force of the spring.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hollow chamber shutoff device for shutting off a hollow chamber of a hollow structure by expanding a foamable base material by foaming and expanding it by external heating.

[0002]

2. Description of the Related Art As shown in FIG. 11, a conventional hollow chamber shutoff device 120 includes a pair of plate-like holder bodies 122 attached to a hollow chamber 106 of a hollow structure 101.
The foamable base material 121 is sandwiched between the holder bodies 122.
Are supported (see FIG. 11B). The holder body 122 is provided with the retaining clips 12 straddling the foamable base material 121.
4 are integrally formed, and the retaining clip 124 is passed through the mounting hole 104 of the hollow structure 101 and engages with the periphery thereof, whereby the holder body 122 is moved to the hollow chamber 10.
6 (see FIG. 11A).
The foamable substrate 121 is heated by a holder body 122 by external heating.
By expanding and foaming in the direction along
As shown in FIG. 11C, the hollow chamber 106 is closed. Thereby, vibration suppression, soundproofing, and the like in the hollow structure 101 are achieved.

[0003]

However, in the above-described hollow chamber blocking device 120, the mounting hole 104 is formed in the hollow structure 101.
Is not formed, the hollow chamber blocker 120 is moved to the hollow chamber 1
06 cannot be attached. For this reason, when the mounting hole 104 cannot be formed due to problems in appearance or strength of the hollow structure 101, the hollow chamber shut-off device 120 cannot be used. The present invention has been made in view of such conventional problems, and has a simple mounting mechanism.
It is an object of the present invention to provide a hollow chamber blocker that can be mounted even when a mounting hole or the like cannot be formed in a hollow structure.

[0004]

According to a first aspect of the present invention for solving the above-mentioned problems, there is provided a hollow-chamber obstruction for a hollow structure as described in claim 1. The hollow structure blocker for a hollow structure according to claim 1, wherein the holder is provided in the hollow chamber of the hollow structure, and is held by the holder and foamed by external heating to form a foam. And a means for attaching to the hollow chamber. In the hollow chamber blocking device according to claim 1,
The holder body is provided in a direction orthogonal to the longitudinal direction of the hollow chamber, and has a foam suppressing plate that supports at least one of both sides of the foam base material. Further, the mounting means includes a support member provided so as to be able to advance and retreat on at least one of the foam suppressing plate and the foamable base material, and an elastic body for projecting the support member toward the inner wall surface of the hollow structure. I have. In the hollow-chamber blocking device according to the first aspect, the support member protrudes from the inner wall surface of the hollow structure, so that the hollow structure can be held in the hollow chamber without providing a mounting hole or the like.

[0005] A second invention of the present application is a hollow-chamber shut-off device for a hollow structure as described in claim 2. In the hollow structure blocking device for a hollow structure according to the second aspect, the foam suppressing plate is provided with at least one storage groove. Further, in the storage groove, a support member and an elastic body for projecting the support member from the inner wall surface of the hollow structure are stored in a straight line. The support member projects from the inner wall surface of the hollow structure along the storage groove by the elastic force of the elastic body. Therefore, the hollow chamber blocking device according to the second aspect can be held in the hollow chamber by a simple mounting mechanism even when the mounting hole cannot be formed in the hollow structure.

According to a third aspect of the present invention, there is provided a hollow structural member having a hollow structure as defined in claim 3. In the hollow-chamber blocking device for a hollow structure according to claim 3, a pair of support members are stored in a straight line in the storage groove, and the pair of support members are interposed between the pair of support members. An elastic body projecting in the opposite direction is provided. The pair of support members project in opposite directions due to the elastic force of the elastic body. By using one elastic body, a pair (2
Since the supporting member can be simultaneously protruded from the inner wall surface of the hollow structure, the hollow chamber blocking device can be held in the hollow chamber by using a small amount of elastic body.

A fourth aspect of the present invention is a hollow-chamber blocking device for a hollow structure as described in claim 4. In the hollow-chamber shutoff device of the hollow structure according to the fourth aspect, the holder body has a pair of foam suppression plates that support both sides of the foamable base material.
A storage groove is provided in each of the pair of foam suppression plates, and the elastic body and the support member are respectively stored in the storage grooves in a straight line. Since the foamable base material is supported from both sides by a pair of foam suppression plates, when heated from the outside, the direction of foaming is restricted from both sides, and a small amount of foamable base material efficiently forms the hollow chamber. Can be shut off. A storage groove is provided in each of the pair of foam suppression plates, and the elastic body and the support member are stored in a straight line in the storage grooves. Therefore, in the hollow-chamber blocking device according to the fourth aspect, since the support member protrudes from the inner wall surface of the hollow structure in each of the pair of foam suppression plates, it can be held more firmly in the hollow chamber.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, based on FIGS.
The structure of the hollow-chamber blocking device of the hollow structure according to the first embodiment of the present invention will be described. The hollow chamber blocking device in the present embodiment includes a vehicle body pillar, a rocker panel,
This is a member for blocking the hollow chamber of a hollow structure such as a roof side panel with a foam to enhance the effects of the hollow structure such as vibration damping and soundproofing. Here, FIG. 1 is a perspective view showing a structure before assembling of the hollow chamber blocking device 1 in the first embodiment. FIG. 2 is a perspective view showing a completed state after assembling of the hollow chamber blocking device 1.

As shown in FIGS. 1 and 2, the hollow-chamber shut-off device 1 has a pair of substantially hexagonal foam suppressing plates 2a and 2b, and substantially the same shape as the foam suppressing plates 2a and 2b.
It is constituted by a foamable base material 3 molded to the same or slightly smaller size. In the present embodiment, the pair of foam suppressing plates 2a and 2b are injection-molded with a heat-resistant synthetic resin (thermoplastic synthetic resin), and one side of one foam suppressing plate 2a has an upper side and a lower side. A total of four holding clips 4a to 4d, one for each of the right and left required portions, are integrally formed. On the other foam suppression plate 2b,
Holding holes 5a to 5d are formed at positions corresponding to the holding clips 4a to 4d, respectively.
The insertion holes 6a to 6d are located at positions corresponding to the holding clips 4a to 4d.
6d are formed. For each of the holding clips 4a to 4d of the foam suppressing plate 2a, the foamable base material 3 is inserted into the insertion holes 6a to 6d.
6d. Further, the other foam suppressing plate 2b is inserted into each of the holding clips 4a to 4d of the foam suppressing plate 2a in the holding holes 5a to 5d.
Each of the holding clips 4a to 4d has a corresponding one of the holding holes 5a to 5d.
By elastically engaging with d, the other foam suppressing plate 2b is mounted on one side surface of the foam suppressing plate 2a with the foamable base material 3 interposed therebetween. As described above, the foamable base material 3 is positioned and held between the pair of foam suppression plates 2a and 2b, thereby forming the hollow chamber blocking device 1 (FIG. 2).

FIG. 3 is a perspective view showing the structure of the attachment means 9 provided on the foam suppression plate 2a before assembling. Mounting means 9
Is constructed by connecting and storing a pair of slide pins 7a and 7b and a spring 8 in a storage groove 15 provided in the foam suppression plate 2a. In the present embodiment, as shown in FIG. 3, the slide pins 7a and 7b are formed by injection molding of a heat-resistant synthetic resin (thermoplastic synthetic resin).
0, the pedestal 11 and the projection 12 are formed as a single-piece member. The support portion 10 is formed in the shape of a quadrangular prism extending in one direction, and a columnar member protrudes in a direction perpendicular to the cross section from a cross section of an end portion in the extension direction to form a protruding portion 12. ing. Similarly, at the end of the support portion 10 in the extending direction, a pedestal portion 11 is formed by projecting a plate-shaped member having the same cross-sectional shape and width by a required length in the vertical direction.

On one side of the foam suppressing plate 2a, a storage groove 15 for storing a pair of slide pins 7a and 7b and a spring 8 is provided. In the present embodiment,
The foaming suppressing plate 2a is formed by injection molding of a heat-resistant synthetic resin (thermoplastic synthetic resin), and the storage groove 15 is also formed. For example, the foaming suppressing plate 2a is formed as a plate-like member, and the plate is formed. The storage groove 15 may be formed by cutting a member having a shape like a circle. The storage groove 15 is
It is composed of slide pin storage sections 14a and 14b and a spring storage section 13. The slide pin storage portions 14a and 14b are formed by grooves having a substantially rectangular cross section having a depth capable of storing the support portions 10 of the slide pins 7a and 7b. It is configured to be shorter than the length. Further, the spring storage portion 13 is formed by a groove having a substantially square cross section having a depth capable of storing the spring 8. still,
The length of the groove forming the spring storage portion 13 is shorter than the total length of the thickness of the pedestal portion 11 of the slide pins 7a and 7b and the natural length of the spring 8 (the length in a non-expanded state). It is preferable that the length is configured to be longer than the total length of the thickness of the pedestal portion 11 of 7a, 7b and the length of the protruding portion 12 of the slide pins 7a, 7b. Further, the width of the groove of the slide pin storage portions 14a and 14b is configured to be smaller than the width of the groove of the spring storage portion 13.
The protrusions 12 of the slide pins 7a and 7b are inserted into the spring 8 from both ends of the spring 8 and connected to each other. The slide pins 7a, 7b and the spring 8 are integrally connected and fitted into the storage groove 15 while contracting the spring 8 to a length that can be stored by coupling the pedestal portion 11 and the spring 8 to the spring storage portion 13. .

In the mounting means 9, the slide pins 7a,
7b, along the slide pin storage sections 14a, 14b,
The support portion 10 can move forward and backward in the extending direction and can slide. Each of the slide pins 7a and 7b receives the action of the elastic force of the contracted spring 8, and moves from the end where the spring 8 is connected (inserted) via the protrusion 12 to the end on the opposite side. Extruded towards. The slide pins 7a and 7b pushed out by the resilience of the spring 8 are arranged such that the pedestal 11 has a groove width of the slide pin storages 14a and 14b.
By contacting the step 16 formed because it is smaller than the width of the groove, the positioning is performed on the contact surface. The length of the groove of the slide pin storage portions 14a, 14b is set shorter than the length of the slide pins 7a, 7b in the extending direction of the support portion 10, and a difference S between the lengths is set.
The tip portions of the support portion 10 corresponding to a and Sb protrude from the end portions of the slide pin storage portions 14a and 14b, respectively. The lengths of the protruding portions of the support portions 10 of the slide pins 7a, 7b are hereinafter referred to as protruding lengths Sa, Sb.

The manner in which the hollow chamber blocking device 1 is held in the hollow chamber of the hollow structure will be described with reference to FIGS. As shown in FIG. 4, the hollow structure 19 has an inter-panel 17a and an outer panel 17b having a substantially trapezoidal cross section.
The inner panel 17a and the outer panel 17b are spot-welded with each other at their flange portions, thereby forming a hollow chamber 18 having a substantially hexagonal cross section. The foam-blocking plate 1 is provided with
a and 2b and the shape of the foamable base material 3 are formed so as to approximate the cross-sectional shape orthogonal to the longitudinal direction of the hollow chamber 18 of the hollow structure 19, and the size of the hollow chamber 1 is
8 is set to a size that produces an appropriate gap (a gap that allows the paint to pass through) between the inner peripheral wall 8 and the inner peripheral wall. The hollow chamber blocking device 1 is inserted into the hollow chamber 18 so that its direction is disposed in a direction orthogonal to the longitudinal direction of the hollow chamber 18. Here, when inserting the hollow chamber blocker 1 into the hollow chamber 18, the protrusion lengths of the protrusions Sa, Sb and the width W of the foam suppressing plate 2 a are reduced by pushing the protrusions of the support portions 10 of the slide pins 7 a, 7 b. The spring 8 is compressed until the total length is equal to or less than the width H of the cavity 18. The hollow chamber blocking device 1 is inserted to a required position of the hollow structure 19, and the projected portions of the support portions 10 of both the pushed slide pins 7 a and 7 b are pressed by the elastic force of the spring 8 to form the hollow structure 1.
Since the inner wall 9 is pressed against the inner wall surface, the hollow chamber blocking device 1 can be held in the hollow chamber 18 by the frictional force generated by the pressing. FIG. 4 shows a state in which the hollow chamber blocking device 1 is held in the hollow chamber 18 in this manner, and FIG. 5 is a cross-sectional view taken along the line AA of FIG. Note that, in the above description, the hollow chamber blocking device 1 is provided with the inner panel 17a.
And the outer panel 17b are inserted into the hollow chamber 18 after being spot-welded to each other, but the hollow-chamber shut-off device 1 is attached to the inner panel 17a or the outer panel 17b before the spot welding, and thereafter, The hollow structure 19 may be completed by spot welding the flange portion.

FIG. 6 shows that the foamable base material 3 of the hollow chamber blocking device 1 in FIG.
FIG. 8 is a diagram showing a state in which 8 is shut off. The foamable base material 3 is foamed at the entire peripheral portion of the hollow chamber blocking device 1. In the present embodiment, the foamable base material 3 is made 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. Have been. For example, when the hollow structure 19 is a body pillar of a vehicle, baking painting is performed when the molding of the vehicle body is completed. Then, by the external heating at the time of the baking coating, the foamable base material 3 of the hollow chamber closing device 1 expands and foams as shown in FIG.
It becomes 0. The foamable base material 3 is a foam suppressing plate 2 as a holder body.
Since it is sandwiched from both sides by a and 2b, its foaming direction is restricted to a direction along the foam suppressing plates 2a and 2b. As a result, the foam 20 generated by the foaming of the foamable base material 3 securely and satisfactorily adheres to the inner peripheral wall surface of the hollow structure 19, and the hollow chamber 18 is effectively shut off by the hollow chamber shutoff device 1. .

As described above, according to the present embodiment, the hollow chamber blocking device 1 includes the slide pins 7a and 7b having the spring 8
Due to the resilience of the hollow structure 19, the hollow structure 19 is pressed against the inner wall surface. Therefore, even when a mounting hole or the like cannot be formed in the hollow structure 19, the hollow structure 19 can be easily mounted with a simple structure. In the present embodiment, the slide pins 7a and 7b correspond to the "support member" in the present invention,
The spring 8 corresponds to the "elastic body", and the combination of the pair of foam suppression plates 2a and 2b corresponds to the "holder body".

FIGS. 7 and 8 show a second embodiment of the present invention. In the second embodiment, the hollow substrate blocking member 21 is configured by connecting the foamable base material 23 to the foam suppressing plate 22. FIG. 7 is a diagram showing a structure before assembling the foamable base material 23 to the foam suppressing plate 22, and FIG. 8 is a diagram showing a completed state of the hollow chamber blocking device 21 after assembling. On one side surface of the foam suppressing plate 22, a total of four holding clips 25a to 25d are provided, one for each of required locations on the upper and lower sides. In the foamable base material 23, holding holes 26a to 26d are formed at locations corresponding to the holding clips 25a to 25d.
a to 25d are inserted into the holding holes 26a to 26d and elastically engaged. Thereby, the foamable base material 23 is held by being bonded to the foam suppression plate 22. The foam suppression plate 22 includes a first
In the same manner as in the embodiment, there is provided an attachment means constituted by a spring 40 and slide pins 24a and 24b, and the slide pins 24a and 24b
Is protruding. As in the second embodiment, the holder body may be constituted by a single foam suppressing plate 22. In this case, the foaming direction of the foamable base material 23 is It will be limited on one side in contact. In addition, in this embodiment, since only one foam suppressing plate is used, the hollow chamber blocking member 21 can be configured with a small amount of material. Therefore, manufacturing costs can be reduced. In the present embodiment, the foam suppressing plate 22 corresponds to the “holder body” in the present invention.

FIG. 9 is a diagram showing a third embodiment of the present invention. In the third embodiment, each of the pair of foam suppressing plates 27a and 27b sandwiching the foam base material 28 is provided with a mounting means 9 constituted by a spring and a slide pin.
a and 9b are provided. Further, the mounting means 9a and 9b are provided in a direction in which the other mounting means 9b is orthogonal to the one mounting means 9a. for that reason,
In the hollow chamber blocking device 29 according to the third embodiment, slide pins protrude up, down, left, and right in four directions in the hollow chamber and press against the inner wall surface. Therefore, one foam suppression plate 2a
Can be held more firmly in the hollow chamber as compared with the hollow chamber shut-off device 1 in the first embodiment in which only the mounting means 9 is provided. In addition, the foam suppression plate 27a,
The attachment means 9a, 9b provided on each of the 27b need not necessarily be orthogonal, and a plurality of attachment means may be provided on one foam suppression plate.

FIG. 10 shows a fourth embodiment of the present invention. In the fourth embodiment, the storage grooves provided in the foam suppression plate 34 are partitioned by the partition portions 32 to form two storage grooves, a storage groove 31a and a storage groove 31b. The storage grooves 31a and 31b respectively have slide pins 30a and 30b and springs 33a and 33b.
Are housed, and separately constitute the mounting means. As described above, the foaming base material 35 and the foaming suppression plate 36 sandwiching the foamable base material 35 are sandwiched between the foaming suppression plate 34 having the two attachment means.
Are combined with each other to form a hollow chamber blocking device.
As in the fourth embodiment, a pair of slide pins 30
Instead of connecting a and 30b with each other by one spring, one elastic body may be connected to one slide pin, so that separate mounting means may be configured.

In the first to fourth embodiments, the mounting means is provided on the foam suppressing plate, but may be provided on the foam base material. That is, a storage groove may be provided in the foamable base material, and a slide pin and a spring may be connected and stored in the storage groove to constitute the mounting means. In the hollow-room blocking device configured as described above, the slide pin protrudes from the foamable base material and is held in the hollow chamber.
In this way, even when the foam suppressing plate is made of a material such as a metal which is difficult to form the storage groove, the mounting means can be provided in the hollow chamber blocking device by providing the storage groove in the foamable base material.

In the first to fourth embodiments, the foam suppressing plate is formed of a heat-resistant synthetic resin. However, other materials such as a rigid cardboard, a wooden hard board, a metal plate, and the like are used. Can also be molded.
In this case, it is not necessary to form the holding clip integrally with the foam suppressing plate, and a holding clip separately formed of a synthetic resin material may be joined to a required position of the foam suppressing plate later.

In the first to fourth embodiments, the slide pin is pushed out by the elastic force of the spring, but an elastic body other than the spring may be used. For example, the slide pin may be pushed out and projected by the elastic force of an elastic body such as rubber or a leaf spring. Further, although the slide pin has been described as having a quadrangular prism shape, a member having another shape, for example, a triangular prism shape or a cylindrical shape may be used. Further, as the material of the slide pin, various materials other than the synthetic resin, for example, metal, wood, foamable base material and the like can be used. The end of the slide pin may be provided with anti-slip means to generate a stronger frictional force with the inner wall surface of the hollow structure. For example, a file with a high coefficient of friction was attached to the end of the slide pin, a sticky sheet was attached, or the end was processed into an uneven shape, and pressed against the inner wall surface of the hollow structure. The frictional force at the time can be increased. In this way, the hollow-chamber blocking device can be held more firmly in the hollow chamber.

Although the hollow chamber blocker is held in the hollow chamber by pressure contact between the protruding slide pin and the inner wall surface of the hollow structure, it can be held by other actions. For example, a concave portion is provided on the inner wall surface of the hollow structure,
The slide pin protruding from the hollow chamber blocking member may be held in the hollow chamber by fitting into the recess.

In the first to fourth embodiments, the foam suppressing plate and the foam base material are integrally connected by the holding clip, but other connecting means may be used. For example, a foam suppression board and a foamable base material are joined by an adhesive,
It may be bonded from the outside with an adhesive tape or joined using screws or the like. In addition, although an example in which a hollow chamber having a substantially hexagonal cross section is blocked by a substantially hexagonally-shaped hollow chamber blocking device similar thereto is shown, the cross-sectional shape of the hollow chamber and the shape of the hollow chamber blocking device are limited to a hexagonal shape. Not something. In the above embodiment, the case where the hollow structure is a vehicle body pillar, a rocker panel, a roof side panel, or the like is illustrated. However, the present invention is not limited to this.
For example, the present invention can be applied to a hollow structure constituting a building such as a building or a ship.

[0024]

According to the present invention, even when a mounting hole or the like cannot be formed in a hollow structure, the hollow chamber shut-off device can be properly mounted in the hollow chamber. In addition, it is easy to change the mounting position of the hollow chamber blocking device, and the use range of the hollow chamber blocking device is widened.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a structure of a hollow-chamber blocking device of a hollow structure according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a completed state of the hollow-chamber blocking device of the hollow structure according to the first embodiment of the present invention.

FIG. 3 is a perspective view showing a mounting means of the hollow chamber blocking device according to the first embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a holding state of the hollow-chamber blocking device in the hollow chamber according to the first embodiment of the present invention.

FIG. 5 is a sectional view taken along the line AA of FIG. 4;

FIG. 6 is an explanatory view showing a state in which the foamable base material of the hollow chamber blocking device is foamed to form a foam, and the hollow chamber is blocked.

FIG. 7 is a perspective view showing a structure of a hollow-chamber blocking device of a hollow structure according to a second embodiment of the present invention.

FIG. 8 is a perspective view showing a completed state of a hollow-chamber blocking device of a hollow structure according to a second embodiment of the present invention.

FIG. 9 is a perspective view showing the structure of a hollow-chamber blocking device of a hollow structure according to a third embodiment of the present invention.

FIG. 10 is a perspective view showing a structure of a hollow-chamber blocking device of a hollow structure according to a fourth embodiment of the present invention.

FIG. 11 is an explanatory view showing a state in which a conventional hollow-structure blocker having a hollow structure is mounted in a hollow chamber.

[Explanation of symbols]

1, 21, 29 ... Hollow chamber blockers 2a, 2b, 22, 27a, 27b, 34, 36 ...
Foaming suppression plate 3, 23, 28, 35 ... foamable base material 4a, 4b, 4c, 4d, 25a, 25b, 25c, 2
5d: holding clip 5a, 5b, 5c, 5d, 26a, 26b, 26c, 2
6d ... holding holes 6a, 6b, 6c, 6d ... insertion holes 7a, 7b, 24a, 24b, 30a, 30b ... slide pins 8, 33a, 33b, 40 ... springs 9, 9a, 9b ... mounting means 10 ... support section 11 … Pedestal part 12… projection part 13… spring storage part 14a, 14b… slide pin storage part 15, 31a, 31b… storage groove 16… stepped part 17a… inner panel 17b… outer panel 18… hollow chamber 19… hollow structure 20 … Foam 32… Partition part Sa, Sb… Projection length W… Width of foam suppression plate H… Width of hollow chamber

Claims (4)

[Claims] 1. A holder body disposed in a hollow chamber of a hollow structure, and a foamable base material held by the holder body and foaming by external heating to form a foam, thereby blocking the hollow chamber. And a means for attaching a hollow structure to the hollow chamber, the hollow body blocking tool having a hollow structure, wherein the holder body is disposed in a direction orthogonal to a longitudinal direction of the hollow chamber, and A foam-suppressing plate that supports at least one of both sides of the material, wherein the mounting means is provided at at least one of the foam-suppressing plate and the foamable base material so as to be able to advance and retreat,
An elastic body for projecting the support member toward the inner wall surface of the hollow structure. 2. The hollow-chamber obstruction device for a hollow structure according to claim 1, wherein the foam suppressing plate has at least one storage groove, and the storage groove has a support member and a support member. A hollow structure blocker for a hollow structure in which an elastic body for projecting a member toward an inner wall surface of the hollow structure is housed in a straight line. 3. The hollow-chamber obstruction device according to claim 2, wherein a pair of support members are accommodated in a straight line in the accommodation groove, and a pair of the support members is provided between the pair of support members. A hollow structure blocker of a hollow structure in which elastic members for projecting support members in opposite directions are provided. 4. The hollow chamber blocking device according to claim 1, wherein the holder body has a pair of foam suppressing plates supporting both sides of the foamable base material, and the pair of foams. Each of the suppression plates is provided with a storage groove,
A hollow chamber shutoff device of a hollow structure in which an elastic body and a support member are respectively housed in a straight line in the housing grooves.