JPH10338170A - Honeycomb plate assembling method for body floor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform honeycomb plate assembling work including a sealing process at low cost taking few manhours. SOLUTION: After laying a fixing thermoplastic sheet 15 on the bottom face of a recessed part 9 formed at a floor panel 2 of a body floor, a honeycomb plate 7 is fitted from above, and a base 12 integrally provided at the upper face of the honeycomb plate 7 is fixed by a locking part 5a and a locking member 13. A sealing thermoplastic sheet 16 is overlapped so as to cover a peripheral edge joint part 12a of the base 12, and heated in a furnace. Then the fixing thermoplastic sheet 15 melts, and the lower face of the honeycomb plate 7 is adhesively fixed to the bottom face of the recessed part 9. At the same time, the sealing thermoplastic sheet 16 melts, and the joint part 13a of the base 12 is fixed in a sealing state to a peripheral edge part 10 of the recessed part 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for assembling a honeycomb plate for a vehicle body floor, in which a honeycomb plate for increasing the rigidity of the vehicle body floor is installed in a recess formed in the vehicle body floor.

[0002]

2. Description of the Related Art Such a method for assembling a honeycomb plate on a vehicle body floor is known from Japanese Utility Model Laid-Open No. 4-19379. In this method, a honeycomb plate is fitted into a concave portion formed on a vehicle body floor via a melt sheet, and then the melt sheet is heated and melted to fix the honeycomb plate in the concave portion. By fixing the honeycomb plate using the mel sheet in this way, it is possible to obtain the rigidity improving effect of the honeycomb plate and the vibration damping effect of the mel sheet. At this time, the gap at the joint between the peripheral edge of the honeycomb plate and the vehicle body floor is sealed by the sealant.

[0003]

However, when a sealant is used, a step of applying the sealant, a step of extending the sealant, and a step of drying the sealant are required, and only the man-hour and cost are increased. In addition, there is a problem that the production line of the vehicle is correspondingly long.

[0004] The present invention has been made in view of the above-mentioned circumstances, and has as its object to reduce the number of man-hours and costs for assembling a honeycomb plate including a sealing process.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, a honeycomb plate is set via a fixing mel sheet in a concave portion formed in a vehicle body floor, and a honeycomb plate is further provided. In a method of assembling a honeycomb plate on a vehicle body floor for sealing and fixing a joint between a peripheral edge and a vehicle body floor, the peripheral edge of the honeycomb plate is covered with a sealing mel sheet, and the sealing mel sheet is heated and melted to seal and fix the joint. It is characterized by doing.

According to the above construction, the joint between the peripheral edge of the honeycomb plate and the vehicle body floor is sealed and fixed with the sealing mel sheet, so that the step of applying the sealant and the step of extending the sealant are not required, and the number of man-hours is reduced. Costs are reduced.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the central portion of the predetermined shape of the melt sheet material is cut into an annular shape, and the inner portion thereof is used as the fixing melt sheet. The outer portion is used as the sealing mel sheet.

According to the above configuration, it is possible to easily manufacture the fixing and sealing melsheets while minimizing the loss of the melsheet material.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on embodiments of the present invention shown in the accompanying drawings.

1 to 6 show an embodiment of the present invention. FIG. 1 is a perspective view of a vehicle body floor on which a honeycomb plate is mounted, FIG. 2 is an enlarged view of FIG. 1 in two directions, and FIG. 2 of FIG.
FIGS. 4 and 5 are sectional views taken along line -3, and FIGS.
FIG. 3 is a view showing a melt sheet material.

As shown in FIG. 1, a vehicle body floor F formed by press-forming a steel plate has a center tunnel 1 extending in the front-rear direction at a center portion thereof, and left and right floor panels connected to left and right sides of the center tunnel 1. 2 and 2, right and left side sills 3 connected to left and right side portions of the floor panels 2 and 2, and a rear panel 4 which rises rearward and upward from the rear ends of the floor panels 2 and 2, respectively. A pair of left and right front cross members 5 and 5 and a pair of right and left rear cross members 6 and 6 for connecting the center tunnel 1 and the left and right side sills 3 and 3 are provided on the upper surfaces of the left and right floor panels 2 and 2. . Left and right front honeycomb plates 7, 7 are provided on the upper surfaces of the floor panels 2, 2 in front of the front cross members 5, 5, and left and right are provided on the upper surfaces of the floor panels 2, 2 behind the rear cross members 6, 6. Rear honeycomb plates 8, 8 are provided.

Since the structures and assembling methods of the left and right front honeycomb plates 7, 7 and the left and right rear honeycomb plates 8, 8 are substantially the same, the left front honeycomb plate 7 will be described as a representative thereof.

As shown in FIG. 2 to FIG. 5, a recess 9 into which the front honeycomb plate 7 is fitted is formed in the floor panel 2 of the vehicle body floor F. The front edge and the left and right side edges of the peripheral edge portion 10 of the concave portion 9 are formed on the floor panel 2, and the rear edge is formed on the front cross member 5. The front honeycomb plate 7 fitted into the concave portion 9 includes a honeycomb core 11 made of aluminum or paper, and a substrate 12 integrally joined to the upper surface of the honeycomb core 11. Substrate 12
Is formed on the periphery of the honeycomb core 11 so as to protrude in a flange shape from the outer periphery of the honeycomb core 11. When the front honeycomb plate 7 is fitted into the concave portion 9, the joint 12a is formed.
Are fixed so as to overlap with the peripheral edge 10 of the recess 9.

A pair of left and right locking portions 5a, 5a are provided on the upper surface of the front cross member 5 constituting the rear edge of the peripheral portion 10.
Are formed by cutting and raising. One end of a plate-shaped locking member 13 is fixed to the upper surface of the floor panel 2 constituting the front edge of the peripheral edge portion 10 by welding. The left and right rear ends of the substrate 12 of the front honeycomb plate 7 are the locking portions 5a,
5a, and the front end of the substrate 12 is fixed by bending the other end of the locking member 13.

FIG. 6 shows a melt sheet material 14 cut into a shape slightly larger than the substrate 12 of the front honeycomb plate 7. This melt sheet material 14 is cut along a cutting line 14a, and the inner portion thereof is fixed to a fixing melt sheet. 15 and the outer part thereof is used as a sealing melt sheet 16. Thereby, the loss of the material can be minimized as compared with the case where the fixing mel sheet 15 and the sealing mel sheet 16 are separately cut,
Moreover, the number of steps required for cutting can be reduced.

Next, a process of assembling the front honeycomb plate 7 to the vehicle body floor F will be described.

The assembling of the front honeycomb plate 7 is performed at the stage when the automobile body has finished the electrodeposition coating.
As shown in FIGS. 4 and 5, a fixing mel sheet 15 is set on the bottom surface of the concave portion 9 of the vehicle body floor F, and the front honeycomb plate 7 is fitted from above. At this time, the right and left rear ends of the substrate 12 of the front honeycomb plate 7 are engaged with the locking portions 5a, 5a of the front cross member 5, and are fixed by the locking members 13 whose front ends are bent. And the substrate 12 of the front honeycomb plate 7
The sealing mel sheet 16 is set so as to cover the boundary between the peripheral edge portion 10 of the concave portion 9 and the state shown in FIG.

In this state, when the automobile body is put into a furnace and heated, the fixing melt sheet 15 is melted and the lower surface of the front honeycomb plate 7 is bonded and fixed to the bottom surface of the concave portion 9, and at the same time, the sealing melt sheet 16 is melted. Thus, the peripheral edge of the substrate 12 of the front honeycomb plate 7 is sealed and fixed (see FIG. 2). Thus, the fixing sheet 1
Since the heat-melting of 5 and the heat-melting of the sealing melsheet 16 are completed at the same time, it is possible to contribute to the reduction of man-hours and work time. In addition, since the seal sheet 16 that can be easily set is used for the seal around the periphery of the substrate 12, the number of steps and operation time can be greatly reduced as compared with the conventional sealing method in which a sealant is applied and extended. No skill is required.

Although the embodiments of the present invention have been described in detail, various design changes can be made in the present invention without departing from the gist thereof.

For example, in the embodiment, the sealing melt sheet 1 is cut by cutting the melt sheet material 14 at a cutting line 14a.
Although 6 is formed, the sealing mel sheet 16 can be formed separately from the fixing mel sheet 15. FIG.
By combining a pair of sealing mel sheets 16 cut into an L-shape as shown in (A), the material can be saved as compared with the case where they are integrally formed. FIG.
As shown in (B), if the sealing mel sheet 16 is formed wide, the sealing effect and the vibration damping effect can be enhanced. Further, as shown in FIG. 7 (C), if the band-shaped sealing mel sheet 16 cut to a predetermined length is bent along the periphery of the substrate 12 and used, the manufacturing cost of the sealing mel sheet 16 can be reduced. it can.

[0021]

As described above, according to the first aspect of the present invention, the peripheral edge of the honeycomb plate fitted into the recess of the vehicle body floor is covered with the sealing mel sheet, and the sealing mel sheet is heated and melted to form the honeycomb. Since the joint between the peripheral edge of the plate and the vehicle body floor is sealed and fixed, the step of applying the sealant and the step of extending the sealant are not required, and the man-hour and cost are reduced.

According to the second aspect of the present invention,
The central part of the melted sheet material of a given shape is cut into a ring, and the inner part is used as a fixing sheet, and the outer part is used as a sealing sheet. Mel sheets and sealing melt sheets can be easily manufactured.

[Brief description of the drawings]

FIG. 1 is a perspective view of a vehicle body floor on which a honeycomb plate is mounted.

FIG. 2 is an enlarged view taken in two directions in FIG. 1;

FIG. 3 is a sectional view taken along line 3-3 in FIG. 2;

FIG. 4 is a view showing an assembly process.

FIG. 5 is a view showing an assembly process.

FIG. 6 is a diagram showing a melt sheet material.

FIG. 7 is a view showing another embodiment of the sealing mel sheet.

[Explanation of symbols]

F Body floor 7 Front honeycomb plate (honeycomb plate) 9 Recess 14 Mel sheet material 15 Fixing melt sheet 16 Seal melt sheet

Claims (2)

[Claims] 1. A recess (9) formed in a vehicle body floor (F).
A honeycomb plate (7) is set via a fixing mel sheet (15), and a honeycomb plate assembling method for a vehicle body floor for sealing and fixing a joint between the peripheral edge of the honeycomb plate (7) and the vehicle body floor (F). 2. The honeycomb plate assembly for a vehicle body floor according to claim 1, wherein a peripheral edge of the honeycomb plate (7) is covered with a sealing mel sheet (16), and the sealing mel sheet (16) is heated and melted to seal and fix the joint. How to attach. 2. A central part of a predetermined shape of a melt sheet material (14) is cut into an annular shape, and its inner part is used as the fixing mel sheet (15), and its outer part is used as the sealing mel sheet (16). The method for assembling a honeycomb plate for a vehicle body floor according to claim 1, wherein the honeycomb plate is used.