JP2002331960A - Hollow part blocking tool for hollow structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the cost of a hollow part blocking tool by simplifying the structure of the tool comprising a foamable base material for blocking the hollow part of a hollow structure by foaming and expanding by external heating to form a foamed body. SOLUTION: This hollow part blocking tool comprises the formable base material 2 arranged in the hollow part 42 to block the hollow part 42 of the hollow structure 4 by foaming by external heating to form the foamed body and a holder 3 for holding the foamable base material 2. The holder 3 comprises a pair of locking parts 32 and 33 engagingly locked with the hollow structure 4 by mutual cooperation, and a support plate 30 for supporting one or both side surfaces of the formable base material 2 in the direction crossing the hollow part 4. The locking parts 32 and 33 are integrally formed on the support plate 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hollow part blocking device provided with a foamable base material which expands and expands by external heating to form a foam, thereby blocking a hollow part of a hollow structure.

[0002]

2. Description of the Related Art Hollow blockers are used to block a hollow portion of a hollow structure. By blocking the hollow portion of the hollow structure, the soundproofing, vibration damping, and strength of the hollow structure are reduced. It is a member to be improved. For example, a hollow part blocking device is used to block a hollow part such as a hollow structure (pillar) forming a vehicle body. Conventionally, this hollow-portion blocking device has a foamable base material that foams when heated to form a foam, and the foamable base material foams to block the hollow portion of the hollow structure. . Some of the hollow blockers have a structure for mounting on the wall surface of a hollow structure. Therefore, the hollow blocker was mounted at a desired position of the hollow structure by this mounting structure, and the foamable base material was foamed in that state. As this mounting structure, a clip or the like mounted on a hole provided in a wall surface of a hollow structure has been conventionally known. However, this clip needs a structure that can be inserted into the hole and a structure that has a claw or the like provided in a folded shape to prevent the clip from falling out of the inserted state, and has a complicated structure. For this reason, the manufacturing cost of the hollow part blocking device has been high.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an inexpensive hollow-section blocking device having an easy structure.

[0004]

In order to solve the above-mentioned problems, the present invention is characterized in that the present invention is a hollow-portion blocking device having the structure as described in the above claims. According to the first aspect of the present invention, the holder for holding the foamable base material has a pair of locking portions that lock with the hollow structure by cooperating with each other, and foams in a plane direction crossing the hollow portion. It has a support plate that supports one side or both sides of the conductive base material.
The locking portion is formed integrally with the support plate. That is, the pair of locking portions are configured to lock to the hollow structure in cooperation with each other. For example, one locking portion locks to the inner wall surface of the hollow structure, and the other locking portion This is a form in which it is locked on the inner wall surface facing the inner wall surface, and the two locking portions are locked on the inner wall surface of the hollow structure by sticking to each other.

Therefore, the locking portion is formed by an easy structure. That is, conventionally, it was necessary to have a structure to be inserted into a hole provided in the wall surface of the hollow structure and a structure for preventing the hollow structure from coming off in a direction opposite to the insertion direction. However, the locking portion of the present invention has, for example, a structure in the insertion direction, but the movement in the direction opposite to the insertion direction is restricted by the other locking portion, and the locking portion in the reverse direction is prevented. The structure does not require a structure. Therefore, the locking portion is formed by an easy structure.

The locking portion is formed integrally with the support plate. This support plate supports one side or both sides of the foamable base material. For example, the support plate supports one side surface of the foamable base material by one piece, or a member supporting one side and another side. And a member that supports one of the foamable substrates, and the other supports one side of the foamable substrate and the other side supports the other side of the foamable substrate.

The holder has a pair of locking portions. Therefore, as a form in which the locking portion is integrally formed on the support plate, for example, a form in which a pair of locking portions is provided on a single-piece support plate, or the support plate supports one side of the foamable base material A supporting plate having a member to be supported and a member for supporting the other side surface, wherein one locking portion is provided on one member side and another locking portion is provided on the other member side, or a two-piece support plate Is provided with one locking portion on one side and another locking portion on the other side.

When the locking portion is provided integrally with the support plate, the number of members is reduced. As a result, the holder has a simple configuration, and the manufacturing cost of the hollow blockage device is reduced. Note that the locking portion is preferably formed by forming a support plate and a locking portion from a single plate material and performing bending or the like from the viewpoint of an easy configuration. Further, the foamable base material becomes a foam, and the foam blocks the hollow portion of the hollow structure. Therefore, the foam improves the effects of vibration suppression, soundproofing, reinforcement, and the like of the hollow structure by blocking the hollow portion. From this point of view, the foam has a structure in which air and the like hardly flow through the hollow portion of the hollow structure in the longitudinal direction by filling the inside of the hollow portion. Therefore, for example, the configuration may be such that air or the like does not completely flow in the hollow portion due to the foam, or the configuration may be such that air or the like does not easily flow.

According to the second aspect of the present invention, the engaging portion of the holder engages with an engaging portion provided on the inner wall surface of the hollow structure to position the holder with respect to the hollow structure. It is. That is, the hollow structure has an engaging portion on the inner wall surface. The engaging portion of the hollow blocker is configured to engage with the engaging portion. Therefore, the holder is locked to the hollow structure by the locking portion engaging the engaging portion. Therefore, the locking portion of the holder has a simple structure. For example, when the engaging portion of the hollow structure is formed in a convex shape, the locking portion can be formed by an easy structure such as a concave shape that engages with the engaging portion. Further, when the engaging portion is formed in a concave shape, the locking portion can have a simple structure of a convex shape engaging with the engaging portion. Therefore,
The locking portion has an easy structure, and the hollow structure is inexpensive.
Further, the holder is positioned with respect to the hollow structure by the engagement of the engaging portion with the engaging portion. Therefore, the holder can be easily locked at a predetermined position of the hollow structure, and the hollow blocker can be easily locked to the hollow structure.
In addition, from the viewpoint of stably locking the holder to the hollow structure, it is preferable that the structure provided in the locking portion and the engaging portion have shapes opposite to each other, so that play in the engaged state is reduced. And the holder is securely locked to the hollow structure.

[0010]

(Embodiment 1) Embodiment 1 of the present invention will be described with reference to FIGS. The hollow blocker 1 according to the present embodiment is a member that blocks a hollow portion of a hollow panel 4 such as a center pillar, a front pillar, a quarter pillar, a roof side panel, or a rocker panel, which is a member of a vehicle body. By blocking the hollow portion 42 of the hollow panel 4, effects such as vibration suppression, soundproofing, and reinforcement of the hollow panel 4 are enhanced.

As shown in FIG. 1, the hollow blocker 1 foams when heat is applied from the outside to form a foam 20 (FIG. 2).
(Refer to (b), 3 (b)) A foamable base material 2 and a holder 3 for holding the foamable base material 2 are provided. The foamable base material 2 is formed mainly of a thermosetting resin, for example, epoxy, urethane, ester, phenol, and the like, and blocks the hollow portion 42 of the hollow portion blocking device 1 by foaming by heat.

As shown in FIGS. 1 to 3, the holder 3 mainly includes a first support plate 30 for supporting one side surface of the foamable base material 2 and a second support plate 31 for supporting the other side surface. The foamable base material 2 is sandwiched between a first support plate 30 and a second support plate 31, which have a sandwich structure. As shown in FIG. 1, the foamable base material 2 is disposed in the hollow portion 42 of the hollow panel 4 on the side surface of the foamable base material 2 supported by the first support plate 30 and the second support plate 31. In this case, the surface constitutes a surface crossing the hollow portion 42. The holder 3 is formed using an elastic material as a base material, for example, a resin or metal base material. When the holder 3 is formed using a resin as a base material, the holder 3 is formed integrally. When the holder 3 is formed using metal as a base material, one metal plate is cut and bent as shown in FIG. 4 to form the holder 3 as shown in FIG. That is,
The holder 3 is integrally formed from one metal plate,
Even when molded using resin as a raw material, it is molded integrally.

As shown in FIGS. 1 to 4, the holder 3 has a connecting portion 34 for connecting between the lower ends of the first support plate 30 and the second support plate 31. The connecting portion 34 is a plate piece formed integrally with the lower end side of the first support plate 30 and the lower end side of the second support plate 31 and connecting these substantially central portions. The holder 3 is provided with a hook 3 for hooking the upper ends of the first support plate 30 and the second support plate 31.
5 The hook portion 35 is a plate piece extending from the substantially central portion of the upper end side of the second support plate 31 to the first support plate 30 side, and has a hook-like shape whose tip is bent at a right angle. It is the shape of. Therefore, by hooking the hook-shaped portion on the surface of the first support plate 30, the upper end of the first support plate 30 is hooked, and the first support plate 30 and the second support plate 3
The relative distance at the upper end of 1 is maintained. Then, the foamable base material 2 is held between the first support plate 30 and the second support plate 31.

As described above, the first support plate 30 and the second support plate 31 are arranged in parallel with a predetermined interval by the connecting portion 34 and the engaging portion 35. And foamable base material 2
By being arranged between the first support plate 30 and the second support plate 31, it is held between them. In addition, the foamable base material 2
It is preferable that the distance between the first support plate 30 and the second support plate 31 be substantially the same as that of the foamable base material 2 from the viewpoint of firmly holding the substrate.

The first support plate 30 has a first locking portion 32 and a second locking portion for locking to the inner wall surface of the hollow panel 4 at both left and right ends (both ends). Is hollow panel 4
The hollow blocker 1 is arranged at a desired position of the hollow panel 4 by engaging with the inner wall surface of the hollow panel 4. The first locking portion 32 is provided on the right end of the first support plate 30, and the second locking portion 33 is on the opposite side of the right end on which the first locking portion 32 is provided. At the left end. The first support plate 30
Corresponds to the support plate of the present invention, and the first and second locking portions 3
Reference numerals 2 and 33 correspond to the locking portions of the present invention.

The first locking portion 32 and the second locking portion 33 include extending portions 32a and 33a extending from the first support plate 30 to the inner wall surface side of the hollow panel 4, and these extending portions 32a and 33a. Part 32
Locking surfaces 32b and 33b which are bent substantially at right angles from the tips of a and 33a, extend to the side opposite to the first support plate 30, and are formed along the inner wall surface of the hollow panel 4. The locking surfaces 32b and 33b include positioning portions 32c and 33c that engage with the inner wall surface of the hollow panel 4. The positioning portions 32c, 33c are provided with locking surfaces 32b,
33b is formed in a substantially hemispherical shape with the inner wall surface side protruding from the substantially central portion. Note that the positioning portions 23c, 33
When molded using a resin as a base material, c is integrally molded with other portions. In the case of molding using a metal plate as a base material, as shown in FIG. 1, another portion may be formed by bending or the like, and then formed by a punch or the like, or as shown in FIG. A form in which a metal plate before bending is formed in advance by a press or the like, and then bent may be applied.

On the other hand, the hollow panel 4 is mainly composed of an upper panel 40 and a lower panel 41 formed of a steel plate or an aluminum plate as shown in FIG. That is, the hollow panel 4 is mainly composed of a plurality of (two) panels. The upper panel 40 and the lower panel 41 are each provided with a flange, and the hollow panel 4 is formed by spot welding these flanges in a state of being overlapped. The hollow panel 4 has a hollow portion 42 formed between the upper panel 40 and the lower panel 41 as shown in FIGS. 1 to 3, and the cross section of the hollow panel 4 is configured as a hollow box-shaped closed shape. . The hollow panel 4 corresponds to a hollow structure of the present invention.

As shown in FIGS. 1 and 2, the lower panel 41 has an engaging portion 41 with which the positioning portions 23c and 33c are engaged.
a and 41b, one engaging portion 41a is provided on one side surface, and the other engaging portion 41b is provided on an opposing surface facing this. In addition, the engaging portions 41a and 41b are
3c and 33c are formed in a shape opposite to each other, and the inner wall surface side is formed in a substantially hemispherical concave shape. Therefore, the engaging portions 41a,
Positioning portions 32c and 33c are provided at 41b, whereby the hollow blocker 1 is stably held at a predetermined position of the hollow panel 4.

A method and an attachment state of the hollow blocker 1 configured as described above to the hollow panel 4 will be described below. First, the hollow blocker 1, the upper panel 40, and the lower panel 41 are prepared. Next, the hollow blocker 1 is inserted inside the lower panel 41. At this time, the first and second locking portions 32, 33 of the hollow blocker 1 are elastically deformed by being pressed against the inner wall surface of the hollow panel 4, and the positioning portions 32c, 33c of the hollow blocker 1 are moved. , Engaging portion 41 of lower panel 41
a, 41b makes it elastically return. Thus, the positioning portions 32c and 33c are
a, 41b. Therefore, the positioning part 32c,
33c is stably engaged with the engaging portions 41a and 41b by utilizing the elastic return of the elastic deformation. The first and second locking portions 32, 33 (positioning portions 32c, 33c)
As shown in FIG. 2A, the lines connecting them have a positional relationship substantially perpendicular to the inner wall surface of the hollow panel 4.
Therefore, the first and second locking portions 32 and 33 are stably held with respect to the hollow panel 4.

The first and second locking portions 32, 33 are
It is engaged with the inner wall surface of the opposing hollow panel 4. Therefore, when the first locking portion 32 attempts to move to the second locking portion 33 side, the second locking portion 33 abuts on the inner wall surface of the hollow panel 4, thereby causing the first locking portion to move. The movement of the stop 32 is restricted (see FIG. 2A). Therefore, the first locking portion 3
2 does not easily come off from the engaging portion 41a of the hollow panel 4, and the state of being engaged with the engaging portion 41a is maintained. Similarly, the movement of the second locking portion 33 is also restricted by the first locking portion 32, and the state of being engaged with the engaging portion 41b is maintained.
As a result, the hollow blocker 1 is locked to the hollow panel 4. That is, the first and second locking portions 32 and 33 are locked to the inner wall surface of the hollow panel 4 in cooperation with each other. Then, a predetermined number (one or a plurality of) of the hollow blockers 1 are engaged with the hollow panel 4 along the longitudinal direction, and in this state, the upper panel 40 is connected to the lower panel 41.
And the upper panel 40 and the lower panel 41 are joined by spot welding.

As described above, the hollow panel 4 in which the hollow blocker 1 is locked is formed. Then, heat is applied to the hollow panel 4. This heat is applied, for example, by baking the vehicle body, and a temperature of, for example, about 110 ° C. to 190 ° C. is applied from the outside of the hollow panel 4. This heat causes the foamable base material 2 to be thermoset and foamed to form a foam 20 as shown in FIGS. 2B and 3B. The foam 20 blocks the hollow portion 42 of the hollow panel 4 in the cross-sectional direction, and blocks the hollow portion 42. When the foamable base material 2 foams, the first support plate 30 and the second support plate 31 suppress the foaming direction, and the foam 2
0 controls the direction in which the hollow portion 42 is blocked. Thus, the hollow portion 42 is blocked or filled with a small amount of the foam 20 (foamable base material 2).

The hollow blocker 1 is configured as described above. That is, since the first and second locking portions 32 and 33 are formed integrally with the first support plate 30, the hollow portion blocking device 1 has an easy structure and is manufactured at low cost. In addition, the hollow blocker 1 has a simple structure because the second support plate 31, the connecting portion 34, and the hooking portion 35 are also provided integrally. When the hollow blocker 1 is formed from a metal plate, these are formed from a single metal plate.
The hollow part blocking device 1 can be manufactured at a low cost with a simpler structure.

The first and second locking portions 32, 33 are
It has positioning portions 32c and 33c as a structure for engaging with the inner wall surface of the hollow panel 4.
c and 33c have an easy structure only to be processed into a convex shape, and the hollow blocker 1 is manufactured at low cost. This structure is an easy structure because the first and second locking portions 32 and 33 cooperate with each other to lock the hollow panel 4.

The first and second locking portions 32, 33 are
The hollow panel 4 is engaged with the inner wall surface of the hollow panel 4 so as to protrude therefrom, and has two engagement points. Therefore, it is locked more stably than the conventional one-point mounting configuration. And
The two-point locking makes it difficult for the hollow blocker 1 to rotate with respect to the hollow panel 4. Moreover, because the distance between the two points is wide,
The moment supported between the two points is large, and the locked state is stably maintained even with a force from the outside or the like.

The hollow blocker 1 is easily mounted on the hollow panel 4. That is, when the hollow blocker 1 is inserted in the insertion direction with respect to the lower panel 41 as shown in FIG. 1, the first and second locking portions 32 and 33 are elastically deformed, and the positioning portion is formed. 32c and 33c are engaging portions 41a and 41b.
Engages. Therefore, the hollow blocker 1 can be locked to the hollow panel 4 only by the movement in the insertion direction. Moreover, the locking position of the hollow blocker 1 to the hollow panel 4 is determined by the positioning portion 32.
c, 33c and the engagement portions 41a, 41b. As a result, the hollow blocker 1 is easily locked at a desired position of the hollow panel 4. As a result, the hollow part blocking device 1 is easy to wear and has good workability.

The first and second locking portions 32, 33 are
Since both are provided on the first support plate 30, their relative positions and relative distances can be easily designed. Further, since the engaging portions 41a and 41b of the hollow panel 4 are both provided on the lower panel 41, the engaging portions 41a and 41b are provided.
b, it is easy to determine the relative position,
a and 41b can be provided at predetermined positions of the lower panel 41.

(Embodiment 2) Embodiment 2 of the present invention will be described with reference to FIGS. The hollow part blocking device 5 of the second embodiment is a member for blocking the hollow part 42 of the hollow panel 4 as in the first embodiment, and foams when heat is applied from the outside as shown in FIG. And a holder 51 for holding the foamable base material 50 as a foam 57 (see FIG. 6).

As shown in FIGS. 5 and 6, the holder 51 is provided with a support plate 52 for supporting one side of the foamable base material 50. Mounting pieces 55 and 56 for mounting the. The mounting pieces 55 and 56 are attached to the end of the support plate 52 from the foamable base material 50.
It is formed so as to extend to the side, and has claws 55a and 56a provided in a folded shape at its tip. Therefore, when the attachment pieces 55 and 56 are inserted into the through holes 50a and 50b provided in the
a and 56a are engaged with the back surface of the foamable base material 50 as shown in FIG. This makes it difficult for the foamable base material 50 to come off from the holder 51, and the foamable base material 50 is attached to the holder 51.

The holder 51 has first and second locking portions 53 and 54 at both left and right ends of a support plate 52, respectively.
The first and second locking portions 53 and 54 and the mounting piece 5
Reference numerals 5 and 56 are formed integrally with the support plate 52, and are formed using an elastic material as a raw material. For example, it is formed of a resin or a metal plate. If the holder 51 is molded using a resin as a material, these are integrally molded. If the holder 51 is molded using a metal plate as a base material, these are cut from a single metal plate and bent. It is integrally formed by processing and the like. The first and second locking portions 5
3 and 54 have the same shape and the same action as the first and second locking portions 32 and 33 in the first embodiment described above, and therefore the description thereof is omitted here.

The hollow blocker 5 is formed as described above. The hollow blocker 5 is locked to the lower panel 41 via the first and second locking portions 53 and 54 similarly to the hollow blocker 1 of the first embodiment. The upper panel 40 is attached to the upper side. Then, heat is applied from the outside of the hollow panel 4, and the foamable base material 50 is foamed by this heat to become a foam 57. And this foam 57
Blocks (fills) the hollow portion 42 of the hollow panel 4. Further, the support plate 52 suppresses the foaming direction of the foamable base material 50 as shown in FIG. 6, thereby determining the shape of the foam 57. Therefore, the hollow portion 42 has a small amount of the foam 57.
(Foamable substrate 50) to block or fill.

As described above, since the hollow blocker 5 has a simple structure, it can be manufactured at low cost. That is, the hollow blocker 5 includes the support plate 52, the first and second locking portions 5.
3, 54 and the mounting pieces 55, 56 are formed integrally, so that the structure is easy. Hollow blocker 5
Are mounted by hooking the foamable base material 50 with the mounting pieces 55 and 56. Therefore, the hollow blocker 5
Has an easy structure and is manufactured at low cost. Since the first and second locking portions 53 and 54 have the same structure as the first and second locking portions 32 and 33 in the first embodiment, the first and second locking portions are provided. The parts 53 and 54 are
It has the same operation and effect as the first and second locking portions 32 and 33.

(Embodiment 3) Embodiment 3 of the present invention will be described with reference to FIGS. The hollow part blocking device 6 of the third embodiment is a member for blocking the hollow part 42 of the hollow panel 4 as in the first embodiment, and applies heat from the outside as shown in FIG. And a foamable base material 60 that forms a foam by foaming, and a holder 61 that holds the foamable base material 60.

As shown in FIG. 5, the holder 61 includes a first support plate 62 for supporting one side surface of the foamable base material 60 and a second support plate 63 for supporting the other side surface. 60
Are sandwiched between a first support plate 62 and a second support plate 63, which have a sandwich structure. The holder 61 includes a first locking portion 65 and a second locking portion 64 which are locked to the inner wall surface of the hollow panel 4. The first locking portion 65 is provided at the left end of the first support plate 62, and the second locking portion 64 is provided at the right end of the second support plate 63.

The first engaging portion 65 includes an extending portion 65a extending from the first support plate 62 to the inner wall surface of the hollow panel 4,
A locking surface 65b is provided which is bent substantially at a right angle from the tip of the extension 65a, extends toward the second support plate 63, and is formed along the inner wall surface of the hollow panel 4. Further, the second locking portion 64 is connected to the second support plate 63 by the hollow panel 4.
An extension 64a extending toward the inner wall surface of the hollow panel 4 is formed so as to be bent substantially at a right angle from the tip of the extension 64a to extend to the first support plate 62 side and along the inner wall surface of the hollow panel 4. The locking surface 64b is provided.

The locking surfaces 65b, 64b have positioning portions 65c, 64c provided in a hemispherical convex shape toward the inner wall surface. As shown in FIG. 7A, the holder 61 includes a connecting portion 66 that connects between lower end sides of the first support plate 62 and the second support plate 63, and the first support plate 62 and the second support plate 63 are connected to each other. There is a hook 67 for hooking the upper end of the support plate 63. Therefore, the first support plate 62 and the second support plate 63
The holding member 67 holds the foamable base material 60 between the first support plate 62 and the second support plate 63 at a predetermined interval. The holder 61 is formed using an elastic material as a base material, and is formed using, for example, a resin or a metal as a base material. When the holder 61 is molded using resin as a material, it is integrally molded. When the holder 61 is formed using a metal as a base material, one metal plate is cut and bent as shown in FIG. 8 to form the shape shown in FIG. That is, the holder 61 is formed integrally.

The hollow blocker 6 is formed as described above. Then, the hollow blocker 6 is inserted into the lower panel 41. As a result, the first locking portion 65 and the second locking portion 64 are pushed by the inner wall surface of the hollow panel 4 to be elastically deformed, and the positioning portions 65c, 64c become the engaging portions 41a, 41b.
Engages. As a result, the hollow blocker 6 is locked to the lower panel 41 (see FIG. 7B). Then, heat is applied from the outside of the hollow panel 4, and the foamable base material 60 is foamed by this heat to become a foam 67. The foam 67 blocks (fills) the hollow portion 42 of the hollow panel 4.

The first and second locking portions 65 and 64 (positioning portions 65c and 64c) are formed such that the line connecting them is substantially perpendicular to the inner wall surface of the hollow panel 4 as shown in FIG. It has a positional relationship. Therefore, the first and second locking portions 65 and 64 are stably held with respect to the hollow panel 4. Further, the support plates 62 and 63 suppress the foaming direction of the foamable base material 60 as shown in FIG. 7B, and thereby determine the shape of the foam 67. Therefore, the hollow portion 42
Is blocked or filled with a small amount of foam 67 (foamable substrate 60).

The first and second locking portions 65 and 64 are
One is stably locked to the hollow panel 4 to suppress the movement of the other. That is, the first and second locking portions 6
5 and 64 are the first support plate 62 and the connecting portion 66, respectively.
And a second support plate 63, so that one movement is transmitted to the other. Therefore, when the first locking portion 65 attempts to move to the second locking portion 64 side, the second locking portion 64 abuts on the inner wall surface of the hollow panel 4, thereby causing the first locking portion 64 to move. The movement of the stop 65 is restricted (see FIG. 7B). Therefore, the first locking portion 65 is difficult to be disengaged from the engaging portion 41b of the hollow panel 4, and the state of being engaged with the engaging portion 41b is maintained. Similarly, the movement of the second locking portion 64 is also restricted by the first locking portion 65, and the state of being engaged with the engaging portion 41a is maintained. As a result, the hollow blocker 6 is locked to the hollow panel 4.

As described above, the hollow blocker 6 has a simple structure and can be manufactured at low cost. That is, the hollow blocker 6 includes the first and second support plates 62 and 63, the first and second locking portions 65 and 64, the connecting portion 66, and the locking portion 6.
Since 7 is formed integrally, it has a simple structure and can be manufactured at low cost. In addition, the first and second locking portions 6
Since the first and second locking portions 65 and 64 have a structure similar to the first and second locking portions 32 and 33 in the first embodiment, the first and second locking portions 65 and 64 have the first and second locking portions. Second locking part 3
In addition to having the same effects as those of Nos. 2 and 33, it also has the following effects.

That is, the installation space can be reduced. The first and second locking portions 65 and 64 are shown in FIG.
As shown in (b), the first and second support plates 62, 63
Is provided within the thickness of the hollow blocker 6.
The space required for installation in the hollow panel 4 is reduced.
In addition, the first and second locking portions 65 and 64 are located on the center side in the thickness direction of the hollow portion blocking device 6. Therefore, the hollow part blocking device 6 can also be used for the first and second locking portions 6 even for its own weight or the like.
5, 64 stably locks the inner wall of the hollow panel 4. Since the holder 61 is made of an elastically deformable material, the connecting portion 66 can also be elastically deformed. Therefore, the connecting portion 66 is provided between the first and second locking portions 65 and 64.
This provides a flexible approach / separation structure. As a result, the positioning portions 65c, 64c are moved to the engagement portions 41a, 41.
b is stably engaged.

(Embodiment 4) Embodiment 4 of the present invention will be described with reference to FIG. Hollow blocker 7 of the fourth embodiment
Has a foamable base material 70 and a holder 71 as shown in FIG. 9, and the holder 71 has a first support plate 72 and a second support plate 73. A first locking portion 75 is provided at the left end of the first support plate 72, and a second locking portion 74 is provided at the right end of the second support plate 73. As shown in FIG. 9, the first locking portion 75 extends from the first support plate 72 to the side opposite to the second support plate 73, and has a locking surface 75b along the inner wall surface of the hollow panel 4. The second locking portion 74 extends from the second support plate 73 to the opposite side of the first support plate 72 and has a locking surface 74b along the inner wall surface of the hollow panel 4. The locking surfaces 75b and 74b have positioning portions 75c and 74c protruding toward the inner wall surface of the hollow panel 4, respectively.
On the inner wall surface of the hollow panel 4, positioning portions 75c,
Engaging part 4 with concave inner wall surface at position corresponding to 74c
1c and 41d are provided.

The structure for locking the hollow panel 4 and the structure for blocking the hollow portion 42 of the hollow blocker 7 are almost the same as those of the hollow blocker 1 of the first embodiment. is there. Therefore, the description of these methods and the description of the operation are omitted here. Also, the first and second locking portions 7
Since the first and second locking portions 75 and 74 have a structure similar to the first and second locking portions 32 and 33 in the first embodiment described above, the first and second locking portions 75 and 74 include the first and second locking portions 75 and 74. Second locking part 3
In addition to having the same effects as those of Nos. 2 and 33, it also has the following effects. That is, the locking state of the hollow blocker 7 to the hollow panel 4 is particularly strong against the force in the predetermined direction. More specifically, the structure in which the hollow blocker 7 is strongly locked to the hollow panel 4 by the first and second locking portions 75 and 74 against an external force around the clockwise rotation in FIG. It is.

(Embodiment 5) FIG.
0 will be described. Hollow blocker 8 of Embodiment 5
Has a foamable base material 80 and a holder 81 as shown in FIG. 10, and the holder 81 has a first support plate 82 and a second support plate 83. First and second locking portions 84 and 85 are provided at left and right ends of the first support plate 82, and first and second locking portions 84 are also provided at left and right ends of the second support plate 73. 8
6,87 are provided. As shown in FIG. 10, the first and second locking portions 84 and 85 extend from the first support plate 82 to the side opposite to the second support plate 83, and engage with the inner wall surface of the hollow panel 4. It has stop surfaces 84b and 85b, respectively. On the other hand, the first and second locking portions 86 and 87 are connected to the second support plate 8.
3 extend to the opposite side of the first support plate 82, and have locking surfaces 86b, 87b along the inner wall surface of the hollow panel 4, respectively. And the locking surfaces 84b, 85b, 86b, 87b
Positioning portions 84c protruding toward the inner wall surface of the hollow panel 4,
85c, 86c, and 87c, respectively. Positioning portions 84c, 85c, 86 are provided on the inner wall surface of the hollow panel 4.
At the positions corresponding to c and 87c, an engagement portion having a concave inner wall surface is provided.

The structure for locking the hollow part 4 and the structure for blocking the hollow part 42 of the hollow part blocking member 8 are almost the same as the hollow part blocking member 1 of the first embodiment. is there. Therefore, the description of these methods and the description of the operation are omitted here. Also, the first and second locking portions 8
4, 85, 86, 87 have a structure similar to the first and second locking portions 32, 33 in the first embodiment, and therefore, the first and second locking portions 84, 85, 86. , 87
It has the same effects as the first and second locking portions 32 and 33, and also has the following effects. That is, the hollow part blocking member 7 has a structure that is difficult to rotate with respect to the hollow panel 4 and is stably locked to the hollow panel 4. Specifically, the first locking portion 84 and the second locking portion 87 formed diagonally or the first locking portion 86 and the second locking portion 85 cooperate with each other. Therefore, it is difficult to rotate with respect to the hollow panel 4.

The hollow blocker and the hollow panel are not limited to the above embodiment, but may be the following. That is, the engaging portion of the hollow panel may be a through hole penetrating the wall surface of the hollow panel. Even in the case of the through hole, the positioning portion is engaged with the through hole, and the hollow blocker is locked to the hollow panel. Further, the positioning portion may have a configuration in which the inner wall surface side of the hollow panel is concave, and the engagement portion may have a configuration projecting from the inner wall surface of the hollow panel. Even in this mode, the positioning portion engages with the engagement portion, and the hollow blocker is locked to the hollow panel. After the hollow panel is formed as shown in FIG. 1, the engaging portions according to the above two forms can be easily provided from outside of the hollow panel by a punch or the like, and can be manufactured at low cost.

[0046]

As described above, according to the present invention, the hollow blocker is locked at a predetermined position of the hollow panel by an easy structure, and the hollow blocker can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is a front perspective view of a hollow blocker, an upper panel of the hollow panel, and a lower panel of the hollow panel.

FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1 in a state where the hollow blocker is locked to the hollow panel (a). It is a sectional view in the state where the foam base material of the hollow part blocking device was foamed, and was made into a foam.

FIG. 3 is a cross-sectional view taken along the line BB of FIG. 1 in a state where the hollow blocker is locked to the hollow panel (a). It is a sectional view in the state where the foam base material of the hollow part blocking device was foamed, and was made into a foam.

FIG. 4 is a front view or a view corresponding to a development view before bending a holder of the hollow block member.

FIG. 5 is a front perspective view of a foamable base material and a holder of a hollow part blocking device according to a second embodiment.

FIG. 6 is a cross-sectional view taken along line CC of FIG. 5 in a state where the hollow block member of the second embodiment is locked to the hollow panel.

FIG. 7 is a front perspective view of a hollow-section blocking device according to a third embodiment (a). FIG. 8B is a cross-sectional view taken along the line DD in FIG. 7A in a state where the hollow blocker is locked to the hollow panel.

FIG. 8 is a view corresponding to a front view or a development view before bending a holder of the hollow-section blocking device according to the third embodiment.

FIG. 9 is a cross-sectional view in a state where the hollow blocker of the fourth embodiment is locked to a hollow panel, and is a cross-sectional view corresponding to FIG. 7 (b).

FIG. 10 is a cross-sectional view in a state where the hollow blocker of the fifth embodiment is locked to a hollow panel, and is a cross-sectional view corresponding to FIG. 2 (a).

[Explanation of symbols]

1, 5 to 8: Hollow blocker 2, 50, 60, 70, 80: Foamable base 3, 51, 61, 71, 81 Holder 4: Hollow panel (hollow structure) 20, 57, 67 Foam 30, 62, 72, 82 ... first support plate (support plate) 31, 63, 73, 83 ... second support plate (support plate) 32, 53, 65, 75, 84, 86 ... first Locking portions (locking portions) 32c, 33c, 64c, 65c, 74c, 75c, 84c, 85c, 86c, 87c ... positioning portions 33, 54, 64, 74, 85, 87 ... second locking portions ( Locking part) 34, 66 ... Connecting part 35, 67 ... Hanging part 40 ... Upper panel 41 ... Lower panel 41a, 41b, 41c, 41d ... Engaging part 42 ... Hollow part 56 ... Support plate

Claims (2)

[Claims] 1. A foamable base material which is provided in a hollow portion of a hollow structure and is foamed by external heating to form a foam to block the hollow portion, and a holder for holding the foamable base material. It is a hollow part blocking tool having, The said holder has a pair of locking parts which lock to the said hollow structure by cooperating with each other, and the said foaming base material in the surface direction which traverses the said hollow part. A supporting plate for supporting one side surface or both side surfaces of the hollow member, wherein the locking portion is formed integrally with the supporting plate. 2. The hollow part blocking device according to claim 1, wherein the locking part of the holder engages with an engaging part provided on an inner wall surface of the hollow structure, thereby holding the holder. A hollow part blocking device characterized in that it is configured to be positioned with respect to a hollow structure.