JP2002053067A - Frame structure for vehicle body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a frame structure for a vehicle body, capable of optimizing strength balance, reducing the number of part items, reducing the total weight, and reducing man-hours. SOLUTION: This frame structure for a vehicle body is provided with a vehicle body reinforcing frame member 4 having at least longitudinal extending parts and an upper or lower lateral extending part out of the longitudinal extending parts b1, b4, the lower lateral extending part b2 extending laterally from the longitudinal extending part, and an upper lateral extending part b3 extending laterally from the longitudinal extending part; hollow members G1, G2 formed by forming longitudinal closed spaces d1, d4 and an upper or lower lateral closed spaces d2 or d3 by joining a pair of panels 2, 3 to each other, arranging the longitudinal extending parts b1, b4 in the longitudinal closed spaces d1, d4, and arranging the upper or lower lateral extending parts b2 or b3 in the lateral closed spaces d3, d4; and foam blocks 6, 7 and 17 supported on plural parts of the reinforcing frame members 4, 13 and for blocking up the facing position by being allowed to abut on the inner surfaces of a pair of panels 2, 3 by being heated and foamed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a skeletal structure of a vehicle body,
In particular, a skeleton of a vehicle body in which a reinforcing frame member is disposed in a closed space of a hollow member of a vehicle body, a foam block is disposed in the closed space, and the foam block is formed into a highly rigid foam block by heating, thereby reinforcing the body. Regarding the structure.

[0002]

2. Description of the Related Art The main parts of a vehicle body frame structure are a reinforcement structure for securing body rigidity and for coping with frontal collisions, offset collisions, and side collisions. Although generally performed, the structure tends to be complicated due to an increase in weight, an increase in the number of parts, and an increase in the number of welding steps. Therefore, as a vehicle body frame structure,
In the case of a vehicle body skeleton structure in which a pair of panels are stacked on each other to form a closed space, it is known that partial reinforcement is performed using a foam reinforcing body that fills the closed space. For example, in the case of the vehicle side sill 100 shown in FIG. 7, a pair of panels 110, 120 and a reinforcing plate (reinforcement) 130 form a closed space 140, and a high-rigidity foam material 150 (before foaming is displayed) is formed in the closed space. ) Is arranged and then heated and foamed, and the closed space 140 is filled and partially reinforced.
The aim is to improve the collision performance.

Further, Japanese Patent Application Laid-Open No. 7-117728 discloses a reinforcing element comprising a cylindrical support member and a foam seal provided at a plurality of longitudinal positions thereof in a closed space of a side sill forming a part of a vehicle body frame member. Disclosed is a method in which a foamed seal is heated and foamed to form a foamed reinforcing body covering a closed space, and the foamed reinforcing body partially reinforces a side sill. Further, Japanese Utility Model Laid-Open No. 58-87668 discloses that a hollow pipe is provided in a closed space of a side sill, a foam liquid is injected around the hollow pipe with a gun, and the foam liquid is heated and foamed to form a foam reinforcing body. Is disclosed.

[0004]

By the way, in the case of using a high-rigid foam material to reinforce a frame of a vehicle body having a structure in which a pair of panels are overlapped with each other to form a closed space, a plate thickness reinforcement or a reinforcement plate ( Reinforcement),
As shown in FIG. 7 and the above-described conventional structures, a high-rigidity foam material is provided at a bent or buckled portion at the time of a collision to realize local reinforcement. For this reason, in the conventional reinforcement structure of the body frame portion using a high-rigid foam material, the thickness reinforcement and the reinforcement portion with the reinforcing plate remain as they are, and in addition to this, a reinforcement structure portion using a high-rigid foam material is used. In addition, the number of parts increases, which does not lead to a total weight reduction, increases the number of working steps, and makes the strength balance inappropriate.

[0005] The present invention is based on the above-mentioned problems, and when reinforcing the frame structure of a vehicle body using a reinforcing frame member and a high-rigid foam material, the number of parts is reduced, the total weight is reduced, and the number of work steps is reduced. It is an object of the present invention to provide a skeletal structure of a vehicle body that can achieve the above.

[0006]

In order to achieve the above-mentioned object, the invention according to claim 1 comprises a vertically extending portion extending in a height direction and a laterally extending portion extending from a lower end of the vertically extending portion. At least the vertical extension and one of the upper and lower horizontal extensions of the lower horizontal extension that extends and the upper horizontal extension that extends laterally from the upper end of the vertical extension. A reinforcing frame member of a vehicle body having a vertical closed space and an upper or lower horizontal closed space are formed by overlapping and joining a pair of panels, and the vertical extending space extends in the vertical closed space. The protruding portion is supported and heated by a plurality of portions of a hollow member of the vehicle body in which one of the upper and lower laterally extending portions is disposed in the one of the upper and lower laterally closed spaces, and a reinforcing frame member of the vehicle body. By foaming, it comes into contact with the inner surfaces of It has and a foam block for closing a closed space location.

As described above, prior to joining a pair of panels, a number of foam blocks before foaming are mounted in a vertically closed space or one of upper and lower horizontally closed spaces continuously provided between the two panels. A reinforcing frame member having the vertically extending portion and the one of the upper and lower horizontal extending portions continuously arranged is provided, and both panels are joined thereon, and then all the portions on the reinforcing frame member are subjected to heat treatment. Foam block. As a result, the foamed blocks exhibiting high rigidity after foaming are pressed against the inner wall surfaces of the pair of panels to close the closed spaces at the opposing positions, and the pair of panels are overlapped and integrally joined. For this reason, it is possible to easily reinforce a portion where each foam block of the hollow member forming the skeleton member of the vehicle body formed by overlapping and joining a pair of panels to each other, and to arrange a plurality of foam blocks at a desired portion to perform a foaming process. Work can be easily performed with good workability. In particular, even when the foamed block is a vertically extending portion that is likely to be displaced downward during installation, the foamed block can be easily reinforced without displacement because it is supported by the reinforcing frame member. Preferably, the reinforcing frame member is a steel pipe. In this case, after foaming, the post-foaming block exhibiting high rigidity can be pressed against the inner wall surfaces of the pair of panels while being supported by the steel pipe, so that the rigidity enhancement over the entire area of the frame member of the vehicle body is further improved. Can be done.

According to a second aspect of the present invention, in the skeleton structure of the vehicle body according to the first aspect, the reinforcing frame member of the vehicle body is positioned in the vertical closed space or the horizontal closed space. A positioning bracket is attached. By attaching the positioning bracket to the reinforcing frame member in this manner, the operation of positioning the reinforcing frame member in the vertical closed space or the horizontal closed space is further facilitated, and workability is improved.

According to a third aspect of the present invention, in the skeletal structure of the vehicle body according to the first aspect, the foam block is formed as a pair of divided halves that sandwich the outer peripheral surface of the reinforcing frame member of the vehicle body before foaming. It is characterized by: By forming the foam block as a pair of divided halves, it can be attached so as to sandwich the outer peripheral surface of the reinforcing frame member,
The workability of mounting the foam block is improved. Preferably,
It is preferable that the pair of split halves be connected to each other by fitting a concave portion provided on one of the pair of split halves with a convex portion provided on the other. In this case, the pair of split halves can be attached so that the outer peripheral surface of the reinforcing frame member is sandwiched by one-touch fitting of the concave portion provided on one of the pair of split halves with the convex portion provided on the other. Block mounting workability is further improved.

[0010]

1 to 4 show a skeleton structure of a vehicle body according to an embodiment of the present invention. Here, the frame structure of the vehicle body includes a side wall frame structure G1 continuously forming the front and rear door facing portion and the trunk facing portion of the passenger car 1 shown in FIG. 4, and a side member G2 facing the engine room (not shown) and extending in the front and rear direction X. Respectively. The side wall skeleton structure G1 is housed in a closed space formed by overlapping the side outer panel 2 and the side inner panel 3 formed by pressing a steel plate from the outside and the inside in the vehicle width direction Y. A hollow member is formed with the reinforcing frame member 4 to be formed.

[0011] As shown in FIG.
A front pillar portion a1 (front vertical extension portion) extending in the height direction Z, and a side sill portion a2 (lower horizontal extension portion) extending laterally in the front-rear direction X, also extend laterally. A roof rail section a3 (upper horizontal extension section), a center pillar section a4 (rear vertical extension section) and rear pillar section a5 extending in the height direction Z, and a rear fender panel section a6 extending rearward. Are formed integrally. As shown in FIG. 1, the side outer panel 2 includes a front pillar outer ao1, a side sill outer ao2, a roof rail outer ao3, a center pillar outer ao4,
Rear Pila Outer ao5 and Rear Fender Panel ao6
And a plurality of flanges fo extending from appropriate locations on the periphery thereof. Side inner panel 3
Is the front liner ai1 and the side sill inner ai
2, a roof rail inner ai3, a center pillar liner ai4, a rear pillar liner ai5, and a plurality of flanges fi extending from appropriate locations on their peripheral edges. The flanges fo and fi of the side outer panel 2 and the side inner panel 3 are overlapped, so that the front pillar a1 has a front vertical closed space d1 (see FIG. 4).
However, the side sill part a2 has a lower horizontal closed space d2 (FIG. 3).
(C), see FIG. 4), the roof rail part a3 has an upper horizontal closed space d3 (see FIGS. 3A and 4), and the center pillar part a4 has a rear vertical closed space d4 (FIG. 3B). , FIG.
) Is formed.

The reinforcing frame member 4 is a rigidity reinforcing member obtained by assembling and welding a plurality of steel pipes into a frame shape. As shown in FIGS. 1 and 2, the reinforcing frame member 4 extends horizontally in the front-rear direction X and has a lower horizontal closed space d2. A lower horizontal extension b2 accommodated in the front end, a front vertical extension b1 extending in the height direction from the front end thereof and accommodated in the front vertical closed space d1, and a rear end of the upper end thereof. The upper and lower ends are welded at the center of the upper lateral extension b3, which extends in a certain horizontal direction and is accommodated in the upper lateral closed space d3, and the upper and lower lateral extensions b3 and b2, and extend in the height direction. And a rear vertical extension b4 housed in the rear vertical closed space d4, a plurality of positioning pieces 5 welded to each of these extensions, and a plurality of foam blocks 6 attached to each of the extensions. Have been.

The central portions of the plate-shaped positioning pieces 5a and 5b are welded to the front and rear ends of the lower laterally extending portion b2, and the positioning pieces 5a and 5b are made of sheet metal and have vertically bent flanges fb. The upper and lower bent flanges fb are shown in FIG.
As shown by a two-dot chain line, the side sill outer ao2 and the side sill inner ai2 come into contact at appropriate places on the inner wall surface, and the contact point w is spot-welded to perform positioning processing. The centering portion of the positioning piece 5c is welded to the middle bent portion of the front vertical extension portion b1 in a state where the center portion of the positioning piece 5c penetrates. The front and rear bent flanges fb abut against the inner wall surfaces (not shown) of the front pillar outer ao1 and the front pillar liner ai1, and spots are welded at appropriate places (not shown) to perform positioning processing. A positioning piece 6a in the shape of a long bent piece is welded to the outer peripheral surface of the rear end of the upper laterally extending portion b3. The upper and lower bent flanges fb of the positioning piece 6a abut at appropriate places on the inner wall surface of the roof rail outer ao3 and the roof rail inner ai3 as shown by a two-dot chain line in FIG. Is done.

Bent long positioning pieces 6b and 6c are welded to the upper and lower outer peripheral surfaces of the rear vertical extension b4. The bent flanges fb before and after the positioning pieces 6b and 6c abut at appropriate places on the inner wall surfaces of the center pillar outer ao4 and the center pillar liner ai4, as shown by a two-dot chain line in FIG. And a positioning process is performed. In addition, the welding work of each contact point w may be performed by welding from a work hole (not shown) on each inner panel side. In some cases, the flanges fo and fi of the side outer panel 2 and the side inner panel 3 are overlapped. At the time, both flanges f
o, each positioning piece 5a-5c and 6a-6c between fi
May be sandwiched, and the whole may be integrally joined by spot welding.

The reinforcement frame member 4 has three rectangular foam blocks 6 attached to the lower horizontal extension b2 accommodated in the lower horizontal closed space d2, and the front vertical orientation accommodated in the front vertical closed space d1. One rectangular foam block 6 and two ring-shaped foam blocks 6 are attached to the extension b1, and two polygonal foam blocks are provided to the upper lateral extension b3 housed in the upper lateral closed space d3. 6 are attached, and two rectangular foam blocks 6 are attached to the rear vertical extension b4 accommodated in the rear vertical closed space d4. In addition, the abutting portions of the lower horizontal extending portion b2, the front vertical extending portion b1, and the rear vertical extending portion b4, and the butting portion of the upper horizontal extending portion b3 and the rear vertical extending portion b4, A substantially triangular foam block 7 is mounted. The foam blocks 6 and 7 are made of, for example, an epoxy resin or the like as a main component, and a high-rigid foam material capable of achieving an average foaming ratio of 3 to 4 times at the time of heating and foaming is employed. Each foam block 6 is formed in substantially the same manner as the mounting structure described later, and only the entire shape before heating and foaming is adjusted in size according to the shape of each closed space.

For example, the rectangular foam block 6 shown in FIG. 3 (c) is accommodated in a relatively large lower lateral closed space d2 in a loose fit state before foaming, and the outer peripheral surface of the lower lateral extension b2 is placed inside the vehicle ( (Left side in the figure) and a pair of divided half portions 6a and 6b sandwiched from the outside of the vehicle. Here, two concave portions m provided in one divided half 6a are connected to the other divided half 6b.
Are fitted to each other, the pair of divided halves are connected to each other. In addition, positioning projections q are provided at the centers of the divided halves 6a and 6b so as to face each other, and are fitted into respective positioning holes r formed on the outer peripheral surface of the lower laterally extending portion b2. . For this reason, the pair of divided half portions 6a and 6b are accurately positioned by fitting the positioning holes r and the positioning protrusions q, and can be connected to each other without a shift by one touch, so that the workability of mounting the foam block 6 is further improved. .

Similarly, the polygonal foam block 6 shown in FIG. 3A is loosely fitted in the upper horizontal closed space d3 before foaming, and the outer peripheral surface of the upper horizontal extension b3 is placed inside the vehicle (in the figure). Left side) and a pair of divided halves 6 sandwiched from the outside of the vehicle
a, 6b. Also here, two concave portions m and one positioning convex portion q are formed in one divided half portion 6a, and two convex portions n and one positioning convex portion q are formed in the other divided half portion 6b. A pair of split halves 6a and 6b are provided with positioning protrusions q in respective positioning holes r of the upper laterally extending portion b3.
Are fitted and positioned, and two protrusions n are fitted into two recesses m with a single touch, and can be connected to each other without displacement, and can be attached with good workability.

Similarly, the rectangular foam block 6 shown in FIG. 3 (b) is loosely fitted in the rear vertical closed space d4 before foaming, and the outer peripheral surface of the rear vertical extension b4 is placed inside the vehicle (see FIG. 3B). A pair of split halves 6 sandwiched from the outside of the vehicle
a, 6b. Also in this case, two convex portions n and one positioning convex portion q are formed in one divided half portion 6a, and two concave portions m and one positioning convex portion q are formed in the other divided half portion 6b. A pair of split halves 6a and 6b are provided with positioning protrusions q in respective positioning holes r of the rear vertical extension b4.
Are fitted without fail, regardless of the vertical outer peripheral surface, and the two convex portions n can be fitted into the two concave portions m by one-touch and connected to each other, and can be attached with good workability.

Here, three foam blocks 6 before foaming in FIGS. 3 (a) to 3 (c) have been described, but the foam blocks 6 in the other portions are similarly attached without displacement and one-touch operation with good workability. Yes, duplicate description is omitted here. Each of the substantially triangular foam blocks 7 shown in three places in FIG. 2 is formed as a pair of divided halves 7a and 7b on the inside and outside of the vehicle (on the front side of the paper) before foaming. It is attached so as to sandwich the front butting portion of the vertical extension b1 and the upper and lower butting portions of the upper and lower horizontal extensions b2 and b3 and the rear vertical extension b4. In this case, each of the divided halves 7a and 7b has three protruding portions q1 protruding therefrom, and these protruding portions q1 and
2, two positioning holes r on the b3 side and a rear vertical extension b
4 are formed so as to fit into each one positioning hole r at the upper and lower ends.

Next, the left and right side members G2 (only one is shown) shown in FIGS. 4 to 6 are provided with a side member outer 11 and a side member inner 12 formed by pressing a steel plate, and a bent closed member formed by these members. And a reinforcing frame member 13 housed in the space d5. As shown in FIG. 6, the side member inner 12 is formed in a U-shaped cross section, the side member outer 11 is formed in a substantially long plate shape, and these panels are formed by extending flanges f2 and f3 from the peripheral edge. I have. Here, the flanges f2 and f3 of the side member outer 11 and the side member inner 12 are overlapped to form a bent closed space d5 having a step in the front-rear direction X and having an inclined portion descending from the front to the rear. Is done. The reinforcing frame member 13 has a shape bent downward from the front part at the upper position toward the rear part, that is, a bent steel pipe 14 extending in the height direction,
It is formed of front and rear positioning pieces 15 and 16 welded near the front and rear ends of the bent steel pipe 14 and a plurality of foam blocks 17 attached to the bent steel pipe 14.

The front and rear positioning pieces 15 and 16 are made of sheet metal and formed with vertically bent flanges fb, which abut at appropriate positions on the inner wall surface of the side member inner 12 as shown by a two-dot chain line in FIG. The contact w is spot-welded and subjected to positioning processing. The rectangular foam block 17 shown in FIG. 6 is formed similarly to the rectangular foam block 6 shown in FIG. 3C, that is, is accommodated in the bent closed space d5 in a loose fit state before foaming, and The outer peripheral surface is formed by a pair of split halves 17a and 17b sandwiching the outer peripheral surface from the vehicle inside (right side in the drawing) and the vehicle outside. Also in this case, two concave portions m and one positioning convex portion q are formed in one divided half portion 17a, and two convex portions n and one positioning convex portion q are formed in the other divided half portion 6b. The pair of split halves 17a and 17b are bent steel pipe 1
The positioning protrusion q is fitted into each of the positioning holes r of No. 4, and the two protrusions n are fitted into the two recesses m.
They can be connected to each other without displacement, and can be attached with one touch with good workability. In particular, the foaming block 17 facing the inclined portion of the bent closed space d5 also has a positioning protrusion q in each positioning hole r.
Is fitted, so that it is possible to reliably prevent slipping and falling, and secure positioning accuracy.

A process of assembling a vehicle having the side wall frame structure G1 and the side member G2 to which the frame structure of the vehicle body is applied will be described. A side outer panel 2, a side inner panel 3, and a reinforcing frame member 4 as shown in FIG. 1 are supplied to a side wall skeleton assembling process section performed on an assembly line of a vehicle, and the side outer panel positioned here is provided. The reinforcing frame member 4 is incorporated in the recessed portion 2 and then the side inner panels 3 are superimposed, and the flanges fo and fi of the two superimposed on each other are welded at a plurality of locations. A welding gun is inserted through an opening on the outer peripheral side of the joined assembly of the side inner panel 3 and a working hole provided in the side inner panel 3, and a plurality of positioning piece pieces 5a to 5c and 6a to
6c, each bent flange fb is spot-welded W to the inner wall surfaces of the side outer panel 2 and the side inner panel 3 to form a vertically closed space d1, d4 provided continuously between the panels 2, 3.
The reinforcing frame member 4 to which a large number of foam blocks before foaming are attached can be attached with high positional accuracy to the horizontal closed spaces d2 and d3.

Similarly, in the side member assembling process section,
The side member inner 12 in which the reinforcing frame member 13 to which the foam block 17 has been attached is positioned and accommodated in advance is supplied, this is overlapped with the side member inner 12, and the flanges f2 and f3 of both are welded to each other to form the side member G2. The side member G2 is assembled and conveyed to an assembly process section at the front of the vehicle body on the vehicle assembly line, where the side member G2 is welded to the assembly body at the front of the vehicle body.

After that, when the assembly of the other parts of the skeleton structure of the vehicle body is completed, the completed skeleton structure of the vehicle body is transported to a coating line, and the entire body structure is electrodeposited in an electrodeposition liquid tank. , And transferred to the paint baking oven in the coating line. Here, the paint is baked at an appropriate baking time at a baking temperature suitable for baking the electrodeposition paint, and at this time, each of the foam blocks 6, 7, 17 in the side wall skeleton structure G1 and the side members G2 is 3 Heat and foam at an average foaming ratio of ~ 4 times. Thereby, the vertically closed space d continuously provided between the side outer panel 2 and the side inner panel 3 is provided.
The foamed blocks 6 and 17 completely close the closed spaces facing the foamed blocks 1 and d4 and the upper and lower laterally closed spaces d2 and d3, and the two panels are integrally joined to form a side wall frame structure G.
1 can be strengthened. Similarly, completely close the closed space of each of the foam block opposing portions of the bent closed space d5 between the side member outer 11 and the side member inner 12 and integrally join both panels to enhance the rigidity of the side member G2. Can be. After foaming, the substantially triangular foam block 7 has a front butting portion between the lower horizontal extension b2 and the front vertical extension b1 and a vertical extension b2, b3 and a rear vertical extension. Foaming is performed so as to cover the upper and lower butted portions of the portion b4, and is pressed against the inner wall facing each butted portion to reinforce each butted portion.

It is assumed that a vehicle to which such a vehicle body skeleton structure having the side wall skeleton structure G1 and the side members G2 collides during traveling and receives a large load in the front-rear direction X. In this case, the side member G2 is formed by the expanded foam block 17.
Since the bending rigidity in the bending closed space d5 is reinforced by the bending steel pipe 14 having a plurality of bending portions, bending deformation of a portion where deformation is desired to be suppressed because the room is close to the cabin is suppressed. As a result, buckling deformation of the steel pipe 14, the side member outer 11, and the side member inner 12 can be generated in the front portion of the vehicle away from the cabin, and the shock absorbing function can be exhibited. Similarly, the side sill portion a2 on the side wall skeleton structure G1 side also suppresses bending deformation by reinforcing the bending rigidity by the laterally extending portion b2 having a plurality of foamed blocks 6, 7 already foamed in the laterally closed space d2 at that portion. Can be

Further, the side wall frame structure G1 joins the side outer panel 2 and the side inner panel 3 to each other, and continuously connects the vertical closed spaces d1, d4 and the upper and lower horizontal closed spaces d2, d3 in the assembly. Is filled in the closed space with a reinforcing frame member 4 having a plurality of foamed blocks 6 and 7 which have been foamed, whereby a front pillar portion a1, a side sill portion a2, a roof rail portion a3, and a center pillar portion a4 are formed.
And the bending rigidity of the rear pillar portion a5 and the like is enhanced. For this reason, even if these parts receive an impact load at the time of a side collision, the deformation of the cabin side can be reduced, and moreover, a large number of foam blocks 6 and 7 can operate the impact absorbing function, and the safety of the occupant can be reduced. Can be improved. Furthermore, since the upper and lower laterally extending portions b3 and b2, the front and rear vertically extending portions b1 and b4, and the bent steel pipe 14, which are the core material of the reinforcing frame member, are made of steel pipe, they are used together with the foam block supported thereon. It is possible to further enhance the rigidity of the entire hollow member of the vehicle body.

As described above, the side wall skeleton structure G1 and the side member G2 to which the skeleton structure of the vehicle body shown in FIG. 1 is applied have a structure in which a pair of side outer panels 2 and side inner panels 3 are overlapped and joined to each other. Reinforcement frame members 4 and 13 capable of deploying a plurality of foam blocks at desired portions of a hollow member
Can be easily reinforced at multiple locations by foaming,
In particular, the work of arranging a plurality of foam blocks at desired portions and performing a foaming process can be performed with good workability. Furthermore, since the foam blocks 6, 7, 17 are supported by the reinforcing frame members 4, 14 when a plurality of foam blocks are installed, even the vertically extending portions d1, d4 which are easily shifted downward are provided without displacement. Thus, after foaming, the same portion can be easily reinforced.

In the above description, the reinforcing frame member 13 is provided with the downwardly inclined portion, but the inclined portion may be completely bent, and in this case, the same as in the apparatus using the reinforcing frame member 13 of FIG. The operation and effect of the invention can be obtained. Further, the reinforcing frame member 4 is formed by integrally combining upper and lower horizontal extension portions b3 and b2 and front and rear vertical extension portions b1 and b4. One member of one of the projecting portions b3 and b2 and one of the front and rear vertically extending portions b1 and b4 may be integrally combined. In this case, the same operation and effect as those of the apparatus of FIG. 1 are obtained. Can be

In the above, the foam block 6,
In 17, positioning is performed by pressing the positioning projections q into the positioning holes r of the extending portions d1 to d4 to perform positioning, but for simplification of the configuration, these positioning projections q and positioning holes are formed. r may be omitted. In this case, the divided halves 6a and 6b and the divided halves 17 forming the foam blocks 6 and 17 are formed.
When the concave and convex portions a and 17b are connected to each other, the vertically extending portions d1 and d4 may be sandwiched to generate a frictional force that serves as a displacement resistance, thereby preventing the displacement. The same operation and effect as those of the first device can be obtained. In this embodiment, a high-rigidity foam material having an average foaming ratio of 3 to 4 times is used for each of the foam blocks 6, 7, 17; A foam material that foams at a higher magnification may be used.

In this embodiment, the extending direction of the lower laterally extending portion is set to the front-rear direction. However, the cross member has a substantially U-shaped cross section and extends in the vehicle width direction. The member is fixed to the floor panel member from at least one of the upper surface and the lower surface side of the floor panel member constituting the floor of the vehicle body, and the cross member and the floor panel member cooperate with each other. A structure may be provided in which a closed space extending in the width direction Y is formed, and a reinforcing frame member and a foam block are disposed inside the closed space.

Further, although the extension direction of the upper lateral extension portion is set to the front-rear direction X, a roof reinforcement member having a substantially U-shaped cross section and extending in the vehicle width direction Y is provided. The roof panel member forming the roof portion of the vehicle body is fixed to the roof panel member from the vehicle interior side, and the roof reinforcement member and the roof panel member cooperate to form a closed space extending in the vehicle width direction Y. And a reinforcing frame member and a foam block may be disposed inside the closed space.

[0032]

As described above, according to the first aspect of the present invention, it is possible to easily reinforce a portion of a hollow member of a vehicle body, in which a pair of panels are overlapped and joined to each other, at which foam blocks oppose each other. Can be easily performed with good workability by arranging them at desired locations and performing a foaming treatment. In particular,
Even if the foamed block is a vertically extending portion in which the foam block tends to be displaced downward during installation, the foam block can be easily reinforced without displacement since it is supported by the reinforcing frame member.

According to the second aspect of the present invention, since the positioning bracket is attached to the reinforcing frame member, the operation of positioning the reinforcing frame member in the vertical closed space or the horizontal closed space is further facilitated, and the workability is improved. .

According to the third aspect of the present invention, by forming the foam block as a pair of divided halves, it can be mounted so as to sandwich the outer peripheral surface of the reinforcing frame member, and the workability of mounting the foam block is improved. I do.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a side wall frame structure of a vehicle to which a vehicle body frame structure according to an embodiment of the present invention is applied.

FIG. 2 is an enlarged perspective view of a reinforcing frame member used in the side wall frame structure of the vehicle shown in FIG.

FIG. 3 is a cross-sectional view of a main part of the side wall skeleton structure of the vehicle in FIG. 1;
1A is a cross-sectional view taken along the line AA of FIG. 1, and FIG.
FIG. 2C is a sectional view taken along line CC of FIG. 1.

FIG. 4 is a schematic side view of a vehicle to which the side wall frame structure of the vehicle of FIG. 1 is applied.

FIG. 5 is an enlarged perspective view of a reinforcing frame member used for a side member used in the side wall frame structure of the vehicle shown in FIG.

FIG. 6 is an enlarged sectional view of a main part of a side member used in the side wall frame structure of the vehicle in FIG. 1;

FIG. 7 is an enlarged cross-sectional view of a side sill portion of a vehicle to which a conventional vehicle body skeleton structure is applied.

[Explanation of symbols]

 2 Side outer panel (panel) 3 Side inner panel (panel) 4, 13 Reinforcement frame member 6, 17 Foam block 7 Triangular foam block b1, b4 Vertical extension b2 Lower horizontal extension b3 Upper horizontal extension Protruding parts d1, d4 Reinforced frame part vertically closed space d2, d3 Laterally closed space G1 Side wall frame structure G2 Side member X Front and rear direction

Claims (3)

[Claims] 1. A vertical extension extending in a height direction, a lower horizontal extension extending laterally from a lower end of the vertical extension, and a horizontal extension from an upper end of the vertical extension. By extending and joining a pair of panels to each other, a reinforcing frame member of a vehicle body including at least the vertical extension portion and one of the upper and lower horizontal extension portions of the upper horizontal extension portion that extends. At least a vertical closed space and one of the upper and lower horizontal closed spaces are formed, and the vertical extending portion is provided in the vertical closed space, and the upper and lower one of the upper and lower horizontal closed spaces is provided. The hollow member of the vehicle body, which is provided with the laterally extending portion, and the closed space at the opposing position in contact with the inner surfaces of the pair of panels by being heated and foamed at a plurality of locations of the reinforcing frame member of the vehicle body. A skeleton of a vehicle body, comprising: Elephants. 2. The vehicle body according to claim 1, wherein a positioning bracket for positioning the reinforcing frame member of the vehicle body in the vertically closed space or the horizontally closed space is attached to the reinforcing frame member of the vehicle body. Skeletal structure. 3. The skeletal structure of a vehicle body according to claim 1, wherein said foam block is formed as a pair of divided halves for sandwiching an outer peripheral surface of a reinforcing frame member of said vehicle body before foaming.