JP2002029449A - Reinforcing implement and reinforcing structure for hollow structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcing implement and reinforcing structure that can efficiently reinforce a hollow structure. SOLUTION: A plurality of hollow cylindrical bodies 11 are connected along a side face to constitute a reinforcing member 10. The reinforcing member 10 is disposed in a hollow space of the hollow structure so that the axial direction of the hollow cylindrical body 11 is parallel to the acting direction of external force. Foam base materials 30, 40 are disposed at the end part and side face of the reinforcing member 10. The foam base materials 30, 40 are foamed by external heating to become foam bodies, to integrally connect the internal wall surface of the hollow structure to the reinforcing member 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing member and a reinforcing structure for a hollow structure, and more particularly to a hollow panel (e.g., a center pillar or a front pillar of a vehicle body) formed of a plurality of panels in a hollow box shape. , Quarter pillars, roof side panels, rocker panels, etc.).

[0002]

2. Description of the Related Art Conventionally, a hollow panel reinforcing member of a vehicle body generally reinforces a hollow panel by internally installing a metal reinforcement panel between an inner panel and an outer panel constituting the hollow panel. Met. However, if the hollow panel is reinforced by a metal reinforcement panel, the weight of the hollow panel is greatly increased, which has a bad influence on fuel efficiency and the like. Therefore, in order to suppress the weight increase of the hollow panel and reinforce the hollow panel, FIG.
It is known that a reinforcing member 111 made of synthetic resin is provided in a hollow chamber of a hollow panel to reinforce the hollow panel as shown in FIG. That is, the reinforcing member 111 made of synthetic resin is
A plurality of reinforcing plates 112, each orthogonal to the longitudinal direction of the hollow chamber, are provided, and a connecting piece 113 is arranged to integrally connect the plurality of reinforcing plates 112 at predetermined intervals. Further, the reinforcing plate 112 of the reinforcing member 111 is formed in such a size and shape that an appropriate gap is formed between the reinforcing plate 112 and the inner peripheral wall surface of the hollow chamber. Also,
Of the many reinforcing plates 112 of the reinforcing member 111,
A foamable base material 130 is inserted and held between the reinforcing plates 112 at the upper and lower ends and the reinforcing plates 112 respectively adjacent to the reinforcing plates 112. When the foamable base material 130 is foamed by the external heating to form a foam, the peripheral portion of the foam adheres to the inner peripheral surface of the hollow panel. A reinforcing tool for a hollow structure having such a structure is disclosed in, for example, JP-A-10-53156.

[0003]

In the above-mentioned conventional hollow structural reinforcing device, a plurality of reinforcing plates 112 which are respectively orthogonal to the longitudinal direction of the hollow chamber, and the plurality of reinforcing plates 112 are arranged at predetermined intervals. The reinforcing member 111 constituted by the connection piece 113 that is connected while being held,
The structure is liable to buckle and the like against external force acting from the outside of the hollow panel, and the reinforcing effect is not sufficient. The present invention has been made in order to solve such a problem, and an object of the present invention is to provide a hollow structure reinforcing tool and a reinforcing structure capable of efficiently reinforcing a hollow structure.

[0004]

Means for Solving the Problems To achieve the above object, a first invention of the present application is a reinforcing device for a hollow structure as described in claim 1. The reinforcing member for a hollow structure according to the first aspect has a reinforcing member in which a plurality of hollow pillars are integrally connected. The reinforcing member is disposed in the hollow chamber such that a direction of the hollow column is parallel to an external force acting on a wall surface of the hollow structure. For this reason, unlike a conventional reinforcing member in which a large number of reinforcing plates are connected by a connecting piece, the reinforcing plate has a feature that it is difficult to be deformed by an external force acting in parallel to the axial direction of the hollow column. It can be reinforced efficiently.

[0005] A second invention of the present application is a reinforcing device for a hollow structure as described in claim 2. The reinforcing member for a hollow structure according to claim 2 is configured such that at least one of the plurality of hollow pillars has a circular or polygonal cross section orthogonal to the axial direction. Therefore, the hollow column has a structure that is less likely to be deformed by an external force acting in parallel with the axial direction, so that the hollow structure can be reinforced efficiently.

A third invention of the present application is a hollow structure reinforcing tool as described in claim 3. The cross-sectional shape orthogonal to the axial direction of at least one of the plurality of hollow pillars is orthogonal to the axial direction of the other hollow pillars. And the size is different. Therefore, by combining hollow pillars having different cross-sectional shapes, the reinforcing member has a structure that is less likely to be deformed by an external force acting in the axial direction of the hollow pillar, and the hollow structure can be reinforced efficiently.

According to a fourth aspect of the present invention, there is provided a reinforcing member for a hollow structure as described in claim 4. The reinforcing tool for a hollow structure according to claim 4 is provided with a foamable base material that integrally forms an inner wall surface of the hollow structure and a reinforcing member by being foamed by external heating to form a foam. I have. Therefore, since the foamable base material is foamed, the inner wall surface of the hollow structure and the reinforcing member are integrally joined,
In the gap between the inner wall surface of the hollow structure and the reinforcing member, the reinforcing member can be fixed without vibrating. Further, since the inner wall surface of the hollow structure and the reinforcing member are integrally connected via a foam, the external force acting on the wall surface of the hollow structure is dispersed and absorbed, and the hollow structure is further strengthened. Can be reinforced.

According to a fifth aspect of the present invention, there is provided a hollow structural member as defined in claim 5. A reinforcing member for a hollow structure according to a fifth aspect includes a reinforcing member in which a plurality of hollow cylinders in the same direction are integrally connected. Further, a foamable base material is provided which foams by external heating to form a foam, thereby integrally connecting the inner wall surface of the hollow structure and the reinforcing member. Therefore, the hollow columnar body of the reinforcing member has a characteristic that it is difficult to be deformed by an external force acting in parallel with the axial direction, so that the hollow structure can be reinforced efficiently. Further, the foamable base material is provided on at least one of a side surface and an end portion of the hollow columnar body, and foamed to integrally connect an inner wall surface of the hollow structure and a reinforcing member. I do. For this reason, the reinforcing member is fixed without vibrating in the gap between the inner wall surface of the hollow structure and the reinforcing member. In addition, since the external force acting on the wall surface of the hollow structure is dispersed and absorbed by the presence of the foam, the hollow structure can be reinforced more strongly.

A sixth invention of the present application is a reinforcing structure for a hollow structure as described in claim 6. In the reinforcing structure for a hollow structure according to the sixth aspect, a reinforcing member in which a plurality of hollow columns are integrally connected is disposed so as to be parallel to a direction of an external force acting on a wall surface of the hollow structure. . In addition, a foam is interposed between the reinforcing member and the inner wall surface of the hollow structure, and the inner wall surface of the hollow structure and the reinforcing member are integrally connected by the foam. Therefore, the hollow columnar body of the reinforcing member has a characteristic that it is difficult to be deformed by an external force acting in parallel with the axial direction, so that the hollow structure can be reinforced efficiently. Further, the foam allows the inner wall surface of the hollow structure and the reinforcing member to be joined without vibrating the reinforcing member in the gap, and furthermore, an external force acting on the wall surface of the hollow structure due to the interposition of the foam. Since it is dispersed and absorbed, it is possible to realize a reinforcing structure for reinforcing the hollow structure more firmly.

[0010]

Embodiments of the present invention will be described in detail below. 1 to 5, a hollow panel (for example, a center pillar) 1 is formed in a hollow box shape by spot welding an inner panel 2 and an outer panel 3 to each other by flanges 4 and 5 thereof. I have. Brackets 6a and 6b are attached to the inner panel 2 at predetermined positions at upper and lower portions by spot welding.
The hollow panel 1 is reinforced by mounting a reinforcing member 9 in a hollow chamber 8 thereof.

As shown in FIG. 1 to FIG.
Are disposed in the longitudinal direction of the hollow chamber 8 of the hollow panel 1, the reinforcing member 10 mounted by the brackets 6 a and 6 b, and the foamable base material 30 disposed at a predetermined position of the reinforcing member 10. 40.

The reinforcing member 10 is formed by joining a plurality of hollow cylindrical bodies 11 together with an adhesive 12.
For joining the plurality of hollow cylinders 11, various joining means such as welding and joining metal fittings can be used in addition to the adhesive. The support plate 41 is joined to the plurality of hollow cylinders 11 along the side surfaces thereof with an adhesive. For joining the support plate 41, other joining means such as welding and joining fittings can be used.

The brackets 6a and 6b are connected to the inner panel 2
At a predetermined position in the upper and lower portions, the reinforcing member 10 is attached by spot welding so as to maintain a predetermined interval at which the reinforcing member 10 can be fitted. The reinforcing member 10 can be fixed at a predetermined position on the inner panel 2 by being fitted between upper and lower brackets 6a and 6b attached to the inner panel 2.

The reinforcing member 10 is disposed in the hollow chamber 8 so that the axial direction of the hollow cylindrical body 11 is parallel to the direction of the external force 50 acting on the hollow panel. In the present embodiment, the external force 50 acts on the top surface 3a of the outer panel 3 in the vertical direction. That is, the reinforcing member 10 is formed such that the axial direction of the hollow cylindrical body 11 is the top surface 3 a of the outer panel 3.
Are arranged in the hollow chamber 8 so as to face in the vertical direction. Here, the hollow cylindrical body 11 has a feature that it is less likely to be deformed by an external force acting in the axial direction as compared with, for example, a plate made of the same amount of the same material. For this reason, the reinforcing member 10 has a higher reinforcing effect than a conventional reinforcing member in which a plurality of reinforcing plates are connected by connecting pieces in the longitudinal direction of the hollow panel. The reinforcing member 10 includes a support plate 41.
Are arranged along the side surfaces of the plurality of hollow cylinders 11 and sandwich the foamable base material 40. The reinforcing member 10
The support plate 41 is formed by injection molding of a hard synthetic resin material having heat resistance.

As shown in FIG. 1, an end of a plurality of hollow cylindrical bodies 11 arranged in the longitudinal direction of the hollow chamber 8 is formed by extending the ends of a thickness X of the expandable base 30. It is notched and fitted into the reinforcing member 10. Foamable substrate 40
Are arranged along the side surfaces of the plurality of hollow cylinders 11 arranged in the longitudinal direction of the hollow chamber 8.

The reinforcing member 10 and the foamable base material 30,
The reinforcing member 9 integrally provided with the reinforcing member 40 is mounted in the hollow chamber 8 of the hollow panel 1 as described below to reinforce the hollow panel 1. That is, as shown in FIGS. 2 to 5, when the reinforcement 9 is attached to the hollow chamber 8 of the hollow panel 1,
First, before the inner panel 2 and the outer panel 3 constituting the hollow panel 1 are spot-welded at their mutual flanges 4, 5, brackets 6a attached to the upper and lower portions of the inner panel 2 at predetermined intervals are provided. The reinforcing tool 9 is fitted and mounted in 6b. Thereafter, the inner panel 2 and the outer panel 3 are spot-welded at their mutual flanges 4 and 5 to form the hollow panel 1 having a hollow box shape. Here, the foaming base provided on the ends and side surfaces of the plurality of hollow cylinders 11 of the reinforcing member 10 by external heating, for example, external heating at the time of baking coating of the vehicle body having the hollow panel 1. Lumber 30, 4
0 foams to form foams 35 and 45 (FIGS. 2 and 3). Then, the foams 35 and 45 formed by the foaming of the foamable base materials 30 and 40 adhere to the inner wall surfaces of the hollow chamber 8, that is, the inner surfaces of the inner panel 2 and the outer panel 3. Thereby, the inner wall surface of the hollow panel 1 and the reinforcing member 1
0 are integrally joined, and the hollow panel 1 is reinforced.

In the present embodiment, the foamable substrates 30, 40
Is formed of a synthetic resin foamable material mixed with a foaming agent that foams by external heating. The foamable base materials 30 and 40 are mainly composed of a synthetic resin having an adhesive property to a metal surface or a synthetic resin surface, to which a foaming agent, a fibrous substance such as glass fiber, or the like is mixed, and a vehicle body is formed. It is desirable to be formed of a foamable material which foams by heat at the time of baking coating (for example, a temperature of about 110 ° C. to 190 ° C.) and becomes a highly rigid foam. Examples of the foamable material having such adhesive properties and forming a highly rigid foam include, for example, JP-A-8-208871, JP-A-8-208871,
It is disclosed in, for example, JP-A-1-158313.

The foamable base material 30 is made of the hollow cylindrical body 11.
At the end of the. Therefore, the reinforcing member 10
The interposition of the foam 35 disperses the external force 50 acting on the hollow panel 1 and effectively absorbs it. Further, the foamable base material 40 foams on the side surface of the hollow cylindrical body 11. Therefore, since the plurality of hollow cylinders 11 receive a force from the outside on the side surface by the foam 45 and are densely packed together, the reinforcing member 10 is provided with an external force 50 acting on the hollow panel 1.
This makes the structure more difficult to deform (buckle). In addition, the reinforcement 9 is a foamable substrate 30, 40 or a foam 35,
The hollow panel 1 may be reinforced with only the reinforcing member 10 without mounting the 45.

As shown in FIG. 6, the reinforcing member 20 may be formed by connecting a plurality of hollow hexagonal prisms 21 on the side surfaces. In this case, unlike the case where a plurality of hollow cylinders are joined, the contact area when the side surfaces of the plurality of hollow hexagonal pillars 21 are bonded to each other becomes large, so that the plurality of hollow hexagonal pillars 21 are more firmly joined to each other. I do. In addition, in order to constitute a reinforcing member, not only the shape of a cylinder or a hexagonal pillar,
Hollow pillars having various cross-sectional shapes such as a triangular pillar and a square pillar can be used. In this case, in order to manufacture a reinforcing member for a hollow structure, in addition to a pipe having a circular cross section, square members having various cross sections can be used. For this reason, for example, by using waste materials such as pipes and square materials of various shapes that are no longer needed, the reinforcing tool can be manufactured at a low cost, which can contribute to resource saving.

As shown in FIG. 7, the reinforcing member 22 can be formed by connecting a plurality of hollow cylindrical bodies 23 and 24 having different cross-sectional shapes. In this case, the gap between the plurality of hollow cylinders 23 and 24 is reduced, and the hollow cylinders 23 and 24 are more densely coupled to each other, unlike the case where the hollow cylinders 23 and 24 have the same size in cross section. . For this reason, the reinforcing member 22 has a structure that is more difficult to be deformed by an external force acting in parallel with the axial direction of the hollow cylindrical body. In addition, the reinforcing member can be similarly configured using a plurality of square pillars, pentagonal pillars, hexagonal pillars, and the like having different cross-sectional shapes. Further, the reinforcing member may be configured using a plurality of hollow pillars having different cross-sectional shapes such as a cylinder and a square pillar, and a pentagonal pillar and a hexagonal pillar.

As shown in FIG. 8, a plurality of pillar-shaped cavities 26 are punched out of an integral material to form a reinforcing member 25.
Can also be configured. This is because, for example, when it is difficult to form the reinforcing member by injection molding of a hard synthetic resin material or the like, a hollow column is formed by punching a hole in an integral resin material, and the reinforcing member is manufactured. Available.

The present invention is not limited to the above embodiment. For example, in the embodiment, the brackets 6a and 6b are used as attachment means for attaching the reinforcing member 10 to the hollow panel 1, but the brackets 6a and 6b are used.
Various attachment means such as attachment clips and attachment hooks can be used instead of 6b. Further, the case where the hollow structure is the hollow panel 1 such as a pillar, a rocker panel, and a roof panel of the vehicle body is illustrated, but the hollow structure constitutes a structure other than the vehicle body, for example, a building, a ship, or the like. It may be a hollow structure.

[0023]

As described above, according to the present invention, it is possible to provide a reinforcing member and a reinforcing structure for a hollow structure which are hardly deformed by an external force acting on the wall surface of the hollow structure and are excellent in strength. Can be.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a reinforcing member for a hollow structure using a hollow cylindrical body according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state in which a reinforcing member is mounted in a hollow chamber of a hollow panel.

FIG. 3 is a cross-sectional view showing a state in which a foamable base material of the reinforcing device has foamed into a foam.

FIG. 4 is a longitudinal sectional view showing a state in which a reinforcing member is mounted in a hollow chamber of the hollow panel.

FIG. 5 is an explanatory diagram showing a state in which a reinforcing member is provided inside a hollow panel forming a center pillar of a vehicle body.

FIG. 6 is an explanatory diagram showing a modified example of the cross-sectional shape of the hollow column of the reinforcing member.

FIG. 7 is an explanatory view showing an example of changing the size of the cross-sectional shape of the hollow column of the reinforcing member.

FIG. 8 is an explanatory view showing a modified example of a reinforcing member.

FIG. 9 is a perspective view showing a conventional reinforcing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Hollow panel (hollow structure) 2 ... Inner panel 3 ... Outer panel 4, 5 ... Flange 6a, 6b ... Bracket 8 ... Hollow chamber 9 ... Reinforcement tool 10, 20, 22, 25 ... Reinforcement member 11, 23, 24 ... Hollow cylindrical body 21… Hollow hexagonal pillar body 30, 40… Foamable base material 35, 45… Foam 50… External force

Claims (6)

[Claims] 1. A reinforcing tool disposed in a hollow chamber of a hollow structure to reinforce the hollow structure, wherein a plurality of hollow columns parallel to a direction of an external force acting on a wall surface of the hollow structure are provided. A reinforcing tool for a hollow structure comprising a reinforcing member integrally joined. 2. The reinforcing member for a hollow structure according to claim 1, wherein the reinforcing member has a circular cross section orthogonal to the axial direction of at least one of the plurality of hollow pillars. Or a reinforcing member for a hollow structure configured to have a polygonal shape. 3. The reinforcing member for a hollow structure according to claim 2, wherein the reinforcing member has a cross-sectional shape orthogonal to an axial direction of at least one hollow column of the plurality of hollow columns, other than the hollow column. The hollow structural member is configured to have a cross-sectional shape and a size different from each other in a direction perpendicular to the axial direction of the hollow column. 4. The reinforcing tool for a hollow structure according to claim 1, wherein the reinforcing member is formed by foaming by external heating to form a foam, thereby forming an inner wall surface of the hollow structure and the reinforcing member. Of a hollow structure provided with a foamable base material that integrally binds to each other. 5. A reinforcing member disposed in a hollow chamber of a hollow structure to reinforce the hollow structure, wherein the reinforcing member is formed by integrally heating a plurality of hollow cylinders, and is foamed by external heating. A foamable base material that integrally joins the inner wall surface of the hollow structure and the reinforcing member by being a body, wherein the foamable base material is at least one of a side surface and an end of the hollow cylindrical body. The reinforcing member is disposed at an end portion, and the reinforcing member is configured such that a cross-sectional shape orthogonal to the axial direction of the plurality of hollow columnar bodies is a circle of the same size, respectively, and in the hollow chamber, A reinforcing tool for a hollow structure, which is disposed so that the direction of the hollow cylindrical body is parallel to the direction of an external force acting on the wall surface of the hollow structure. 6. A reinforcing structure for a hollow structure, wherein a reinforcing member in which a plurality of hollow pillars are integrally connected is parallel to a direction of an external force acting on a wall surface of the hollow structure in the hollow chamber. A hollow body is provided between the inner wall surface of the hollow structure and the reinforcing member, and the inner wall surface of the hollow structure and the reinforcing member are integrally connected by the foam. Structure reinforcement structure.