JP7586101B2 - Vehicle floor panel - Google Patents

Description

The present invention relates to a vehicle floor panel, and in particular to a vehicle floor panel that is constructed by joining together multiple unit panels.

One type of vehicle floor panel is made by joining together multiple unit panels. Such floor panels are made by arranging and integrating multiple unit panels, each of which is rectangular when viewed from above the vehicle, in sequence along their short sides. The unit panels are hollow panel members manufactured by extruding an aluminum alloy material, for example. The hollow panel members have a constant cross-sectional shape along their length. Patent Document 1 discloses a structure for the fitting portions (engagement portions) between hollow panel members, which is intended to reduce the amount of material used in the fitting portions.

JP 2014-20428 A

When a vehicle is traveling, water may adhere to the underside of the floor panel. In a vehicle floor panel that is constructed by joining multiple unit panels, the seams between the unit panels are visible on the underside of the floor panel where the unit panels engage with each other. If water adheres to the underside of the floor panel, there is a risk that the water will seep into the engagement area through the seams between the unit panels, causing corrosion at the engagement areas between the unit panels.

Therefore, it is desirable to reduce the risk of corrosion at the joints between unit panels.

The vehicle floor panel according to the present invention is a vehicle floor panel that is constructed by sequentially arranging and integrating a plurality of rectangular unit panels in the short side direction when viewed from above the vehicle, and the unit panels have a constant cross-sectional shape in the longitudinal direction, and the floor panel includes an engaging panel and an engaged panel as two adjacent unit panels, the engaging panel having a contact portion with the engaged panel at the lower end on one side in the short side direction, and the engaged panel having a contact portion with the engaging panel at the lower end on the other side in the short side direction, and the contact portion of the engaging panel has, in order from the end in the short side direction of the panel toward the inside, a hook having a hooking portion protruding downward, a pressing portion protruding downward, and a recessed portion, and the engaged panel has a contact portion with the engaging panel at the lower end on the other side in the short side direction. The contact portion of the panel includes a hook receiver that protrudes upward and fits between the hook and the clamping portion of the engaging panel, and a protruding portion that protrudes upward and fits into the recessed portion of the engaging panel, the tip of the hook receiver of the engaged panel engages with the hanging portion of the engaging panel, and the hook receiver of the engaged panel is sandwiched between the hook and the clamping portion of the engaging panel to form an engagement portion between the engaging panel and the engaged panel, and the contact boundary between the inner surface of the recess of the engaging panel on the inside in the short direction of the panel and the end surface of the protruding portion of the engaged panel on the outside in the short direction of the panel forms a seam that appears on the underside of the engaging panel and the engaged panel.

In the vehicle floor panel according to the present invention, the engaging panel has a second contact portion with the engaged panel at the upper end of one side in the short side direction, and the engaged panel has a second contact portion with the engaging panel at the upper end of the other side in the short side direction, and the second contact portion of the engaged panel has, in order from the end of the panel in the short side direction toward the inside, a hook protruding upward and having a hook portion, a pressing portion protruding upward, and a recessed portion, and the second contact portion of the engaging panel has a hook receiver protruding downward and inserted between the hook and the pressing portion of the engaged panel, and a hook receiver protruding downward and having a hook portion. and a protrusion that fits into the recess of the engaged panel, the tip of the hook receiver of the engaging panel engages with the hook of the engaged panel, and the hook receiver of the engaging panel is clamped between the hook and the pressing portion of the engaged panel to form an engagement portion between the engaging panel and the engaged panel, and the contact boundary between the inner surface of the recess of the engaged panel on the inside in the short direction of the panel and the outer end surface of the protrusion of the engaging panel on the outside in the short direction of the panel forms a seam that appears on the top surfaces of the engaging panel and the engaged panel.

In the vehicle floor panel of the present invention, the pressing portion of the engaged panel may form the inner surface of the recess of the engaged panel on the outer side of the short side of the panel, and a groove may be formed in the bottom of the recess of the engaged panel adjacent to the inner surface on the outer side of the short side of the panel.

According to the present invention, the seam that appears on the underside of the engaging panel and the engaged panel is offset from the engagement portion of those panels, so that when water adheres to the underside of the floor panel, the risk of water entering the engagement portion can be reduced. This reduces the risk of corrosion at the engagement portion of the two panels.

FIG. 2 is a perspective view showing the configuration around the entrance/exit of the vehicle 1, with a ramp for wheelchairs and the like stored. FIG. 2 is a perspective view showing the configuration around the entrance/exit of the vehicle 1 with the ramp deployed. 2 is an exploded perspective view showing a mounting structure of the floor panel 10 to the vehicle. FIG. FIG. 2 is a perspective view showing a schematic configuration of a unit panel 12. 1 is a schematic cross-sectional view of the floor panel 10 (a cross-section taken along line AA in FIG. 3). FIG. 2 is a cross-sectional view showing the joint between two unit panels. 13 is a diagram showing water seeping into the joint between the undersides of two unit panels. FIG. FIG. 11 is a cross-sectional view showing a joint between two unit panels according to another embodiment.

Embodiments of the present invention will be described below with reference to the drawings. Note that the present invention is not limited to the embodiments described herein. In the following description, unless otherwise specified, terms indicating directions and orientations such as front, back, left, right, up, down, etc., indicate directions and orientations related to the vehicle. In each figure, the arrow FR points forward, the arrow UP points upward, and the arrow LH points leftward.

Figures 1 and 2 are perspective views showing the configuration around the entrance and exit of vehicle 1, with Figure 1 showing the ramp in a stowed state and Figure 2 showing the ramp in an unfolded state. Vehicle body 4 has a sliding door 2 on one side, the left side. An electric ramp device 6 is provided below the sliding door 2 of vehicle body 4. Electric ramp device 6 has a slope to make it easier for wheelchairs and the like to get on and off.

The sliding door 2 has two doors 2a and 2b (door 2a on the front side and door 2b on the rear side), which slide in opposite directions in the front-to-rear direction by a door opening/closing mechanism (not shown) to open and close the boarding/exiting door (entrance/exit) 8.

In addition, the electric ramp device 6 is normally stored under the floor as shown in Figure 1, and when passengers board or disembark, the ramp is deployed so that it protrudes outward (diagonally toward the front left in the figure) as shown in Figure 2.

A floor panel 10 is disposed above the portion where the electric ramp device 6 is located. The floor panel 10 is provided as a separate member from the floor panels of other portions of the vehicle 1 and can be removed independently. This allows, for example, the floor panel 10 to be removed while the electric ramp device 6 below is being inspected, repaired, or removed.

Figure 3 is a diagram showing the mounting structure of the floor panel 10 to the vehicle. A steel floor member 20 is provided on the floor of the vehicle, and an opening 22 is provided at a position corresponding to the entrance and exit on the side of the vehicle. Two support parts 24 and one support part 26 that support the floor panel 10 are formed on the peripheral part (three sides) of the opening 22. The support parts 24 and 26 are part of the floor member 20. The two support parts 24 extend in the left-right direction with a gap in the front-rear direction, and the support part 26 extends in the front-rear direction so as to connect the two support parts 24 at their right ends. The electric slope device 6 is disposed inside the support parts 24 and 26, and the floor panel 10 is disposed so as to cover the electric slope device 6. The peripheral parts of the three sides of the floor panel 10 are placed on the support parts 24 and 26 and fixed by bolt tightening (not shown) or the like.

The floor panel 10 covers the opening 22, and the side edge corresponding to the boarding/alighting entrance is a free edge 11 with no supporting member below. In addition, interior materials such as cover materials may be installed on the upper side of the floor member 20 and the floor panel 10 as appropriate.

The floor panel 10 is formed by arranging and integrating multiple rectangular unit panels 12 in the short side direction when viewed from above the vehicle. Figure 4 is a perspective view showing the schematic configuration of a unit panel 12. The unit panels 12 are formed by aluminum extrusion molding in the extrusion direction shown by the arrow in Figure 3. Aluminum extrusion molding is performed by pressing aluminum material against a mold and extruding it from the mold. The unit panels 12 have a constant cross-sectional shape in their longitudinal direction (Y direction). Hereinafter, the short side direction of the unit panels 12 will be referred to as the X direction, and the longitudinal direction will be referred to as the Y direction, where appropriate.

Figure 5 is a diagram showing a schematic cross section of the floor panel 10 taken along line A-A in Figure 3. The unit panel 12 is a hollow plate, with both ends in the longitudinal direction open. The unit panel 12 has a plurality of ribs 14 (only the ribs of one unit panel 12 are marked in Figure 5) that extend longitudinally inside the hollow cross section and connect the upper and lower walls of the hollow cross section. Both ends of the unit panel 12 in the short direction (X direction) form joints 30 with other unit panels 12.

Figure 6 is a diagram showing a cross section of the joint 30 of two adjacent unit panels 12 (12A, 12B). The joint 30 includes lower contact portions 40A, 40B between the panels, and upper contact portions 100A, 100B between the panels. In this embodiment, the lower contact portions 40A, 40B are distinctive, while the upper contact portions 100A, 100B are conventional. Hereinafter, the unit panel 12A will be referred to as the engaging panel 12A, and the unit panel 12B will be referred to as the engaged panel 12B.

First, the lower contact portions 40A and 40B will be described. The engaging panel 12A has a contact portion 40A with the engaged panel 12B at the lower end on one side in the X direction, and the engaged panel 12B has a contact portion 40B with the engaging panel 12A at the lower end on the other side in the X direction. The contact portion 40A of the engaging panel 12A has, in order from the end of the panel 12A in the X direction toward the inside, a hook 41A that protrudes downward and has a hook portion 42A, a pressing portion 43A that protrudes downward, and a recessed portion 45A. The contact portion 40B of the engaged panel 12B has a hook receiver 50B that protrudes upward and fits between the hook 41A and the pressing portion 43A of the engaging panel 12A, and a protruding portion 52B that protrudes upward and fits into the recessed portion 45A of the engaging panel 12A.

The tip 51B of the hook receiver 50B of the engaged panel 12B engages with the hook portion 42A of the hook 41A of the engaging panel 12A. The hook receiver 50B of the engaged panel 12B is also clamped between the hook 41A and the retaining portion 43A of the engaging panel 12A. This forms the engagement portion 32L (fitting portion) of the two panels 12A and 12B.

The contact boundary between the inner surface 46A on the other side in the X direction (the inner side in the short direction of the panel 12A) of the recessed portion 45A of the engaging panel 12A and the end surface 53B on the other side in the X direction (the outer side in the short direction of the panel 12B) of the protruding portion 52B of the engaged panel 12B forms a seam 90L that appears on the undersides of the two panels 12A, 12B.

Next, the upper contact portions 100A and 100B will be described. The engaging panel 12A has a contact portion 100A with the engaged panel 12B at the upper end on one side in the X direction, and the engaged panel 12B has a contact portion 100B with the engaging panel 12A at the upper end on the other side in the X direction. The contact portion 100B of the engaged panel 12B has, in order from the end of the panel 12B in the X direction toward the inside, a hook 101B that protrudes upward and has a hook portion 102B, and a hook facing portion 103B that extends upward. The contact portion 100A of the engaging panel 12A has a hook receiver 110A that protrudes downward and fits between the hook 101B and the hook facing portion 103B of the engaged panel 12B.

The tip 111A of the hook receiver 110A of the engaging panel 12A engages with the hook portion 102B of the hook 101B of the engaged panel 12B. This forms the engagement portion 32U (fitting portion) of the two panels 12A and 12B. In addition, the contact boundary between the hook receiver 110A of the engaging panel 12A and the hook facing portion 103B of the engaged panel 12B forms a seam 91U that appears on the top surfaces of the two panels 12A and 12B.

Next, the effect of the floor panel 10 of this embodiment will be described. FIG. 7 is a diagram of the two panels 12A and 12B in FIG. 6 without hatching. As the vehicle travels, water 200 may adhere to the joint 90L of the lower surface of the two panels 12A and 12B as shown in FIG. 7. When the water 200 adheres to the joint 90L, the water 200 is sucked up to the upper part of the joint 90L by capillary action. However, according to the embodiment described above, the engagement parts 32L of the two panels 12A and 12B are offset in the X direction from the position of the joint 90L, so that the water 200 can be prevented or suppressed from penetrating the engagement parts 32L. Therefore, the risk that the water 200 will come into contact with the engagement parts 32L and corrode it can be reduced. Even if the joint 90L is corroded by the water 200, the function of the engagement parts 32L can be maintained, and the occurrence of rattle and a decrease in rigidity in the joint 30 can be prevented.

Next, the joint portion of the unit panels of another embodiment will be described. Figure 8 is a diagram showing a cross section of the joint portion 30-1 of the unit panels 12A-1, 12B-1 of another embodiment. In this embodiment, the structure of the lower contact portions 40A, 40B of the two unit panels 12A, 12B described above is also used for the upper contact portions 60A, 60B. Since the structure of the lower contact portions 40A, 40B is the same as in the embodiment described above, only the structure of the upper contact portions 60A, 60B will be described.

The engaging panel 12A-1 has a contact portion 60A (also called the second contact portion 60A) with the engaged panel 12B-1 at the upper end on one side in the X direction, and the engaged panel 12B-1 has a contact portion 60B (the second contact portion 60B) with the engaging panel 12A at the upper end on the other side in the X direction. The contact portion 60B of the engaged panel 12B-1 has, in order from the end of the panel 12B-1 in the X direction toward the inside, a hook 41B that protrudes upward and has a hook portion 42B, a pressing portion 43B that protrudes upward, and a recessed portion 45B. The contact portion 60A of the engaging panel 12A-1 has a hook receiver 50A that protrudes downward and fits between the hook 41B and the pressing portion 43B of the engaged panel 12B-1, and a protruding portion 52A that protrudes downward and fits into the recessed portion 45B of the engaged panel 12B-1.

The tip 51A of the hook receiver 50A of the engaging panel 12A-1 engages with the hook portion 42B of the hook 41B of the engaged panel 12B-1. In addition, the hook receiver 50A of the engaging panel 12A-1 is clamped between the hook 41B and the retaining portion 43B of the engaged panel 12B-1. This forms the engagement portion 32U (fitting portion) of the two panels 12A and 12B.

The contact boundary between the inner surface 46B on one side in the X direction (the inner side in the short direction of the panel 12B-1) of the recessed portion 45B of the engaged panel 12B-1 and the end surface 53A on one side in the X direction (the outer side in the short direction of the panel 12A-1) of the protruding portion 52A of the engaging panel 12A-1 forms a seam 90U that appears on the top surfaces of the two panels 12A-1, 12B-1.

According to the other embodiment described above, the engagement portion 32U of the two panels 12A-1, 12B-1 is offset in the X direction from the position of the seam 90U, so that even if water adheres to the seam 90U on the upper surfaces of the two panels 12A-1, 12B-1, it is possible to prevent or suppress the water from entering the engagement portion 32U. This reduces the risk of water coming into contact with the engagement portion 32U and corroding it.

As shown in FIG. 8, the pressing portion 43B of the engaged panel 12B-1 forms the inner surface 47B on the other side in the X direction of the recessed portion 45B of the engaged panel 12B-1 (the outer side in the short direction of the panel 12B-1). A groove 80 is formed at the bottom of the recessed portion 45B of the engaged panel 12B-1 adjacent to the inner surface 47B on the other side in the X direction. Therefore, even if water seeps into the recessed portion 45B from the seam 90U on the top surfaces of the panels 12A-1 and 12B-1, the water will accumulate in the groove 80, preventing the water from climbing over the pressing portion 43B and entering the engaging portion 32U.

The number, material, shape, etc. of the unit panels 12 that make up the floor panel 10 can be changed as appropriate depending on the vehicle specifications. For example, the unit panels 12 may be made of aluminum die-cast.

1 vehicle, 2 sliding door, 2a, 2b door, 4 vehicle body, 6 electric ramp device, 8 boarding/alighting door (entrance/exit), 10 floor panel, 11 free edge, 12 unit panel, 12A, 12A-1 engaging panel (unit panel, panel), 12B, 12B-1 engaged panel (unit panel, panel), 14 rib, 20 floor member, 22 opening, 24, 26 support portion, 30, 30-1 joint portion, 32L, 32U, 33U engaging portion, 40A, 40B contact portion, 41A, 41B hook, 42A, 42B hooking portion, 43A, 43B holding portion, 45A, 45B recessed portion, 46A, 46B, 47B inner surface, 50A, 50B hook receiver, 51A, 51B tip, 52A, 52B Protrusion, 53A, 53B end face, 60A, 60B second contact part (contact part), 80B groove, 90L, 90U, 91U joint, 100A, 100B contact part, 101B hook, 102B hook part, 103B hook facing part, 110A hook receiver, 111A tip, 200 water.

Claims (3)

A floor panel for a vehicle that is configured by sequentially arranging and integrating a plurality of unit panels that are rectangular in a top view of the vehicle in a short side direction,
The unit panel has a constant cross-sectional shape in its longitudinal direction,
The floor panel includes an engaging panel and an engaged panel as two adjacent unit panels,
The engaging panel has a contact portion with the engaged panel at a lower end portion on one side in the short side direction, and the engaged panel has a contact portion with the engaging panel at a lower end portion on the other side in the short side direction,
The contact portion of the engagement panel includes, in order from an end portion in a short side direction of the panel toward an inside thereof, a hook having a hooking portion protruding downward, a pressing portion protruding downward, and a recessed portion,
the contact portion of the engaged panel includes a hook receiver that protrudes upward and fits between the hook and the pressing portion of the engaging panel, and a protruding portion that protrudes upward and fits into the recessed portion of the engaging panel,
a tip end of the hook receiver of the engaged panel engages with the hook portion of the engaging panel, and the hook receiver of the engaged panel is sandwiched between the hook of the engaging panel and the pressing portion, thereby forming an engagement portion between the engaging panel and the engaged panel;
a contact boundary between an inner surface of the recessed portion of the engaging panel on the inner side in the short direction of the panel and an end surface of the protruding portion of the engaged panel on the outer side in the short direction of the panel forms a seam that appears on the underside of the engaging panel and the engaged panel;
A vehicle floor panel comprising: 2. A vehicle floor panel according to claim 1,
The engaging panel has a second contact portion with the engaged panel at an upper end portion on one side in the short side direction, and the engaged panel has a second contact portion with the engaging panel at an upper end portion on the other side in the short side direction,
The second contact portion of the engaged panel includes, in order from an end portion in a short side direction of the panel toward an inside thereof, a hook having a hooking portion protruding upward, a pressing portion protruding upward, and a recessed portion,
the second contact portion of the engaging panel includes a hook receiver that protrudes downward and fits between the hook and the pressing portion of the engaged panel, and a protruding portion that protrudes downward and fits into the recessed portion of the engaged panel,
a tip end of the hook receiver of the engaging panel engages with the hook portion of the engaged panel, and the hook receiver of the engaging panel is sandwiched between the hook of the engaged panel and the pressing portion, thereby forming an engagement portion between the engaging panel and the engaged panel;
a contact boundary between an inner surface of the recessed portion of the engaged panel on the inner side in the short direction of the panel and an end surface of the protruding portion of the engaging panel on the outer side in the short direction of the panel forms a seam that appears on the upper surfaces of the engaging panel and the engaged panel;
A vehicle floor panel comprising: 3. A vehicle floor panel according to claim 2,
The pressing portion of the engaged panel forms an inner surface of the recessed portion of the engaged panel on an outer side in a short side direction of the panel,
In the recessed portion of the engaged panel, a groove is formed at a bottom adjacent to an inner surface on the outer side in the short side direction of the panel.
A vehicle floor panel comprising:

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