JP2017007384A - Structure for preventing falling of vehicle lower part closing plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure for preventing falling of vehicle lower part closing plates, which can prevent the vehicle lower part closing plates from falling from lower face opening receiving parts without requiring new operation when the vehicle lower part closing plates are inserted into the lower face opening receiving parts of a vehicle body and arranged at a predetermined position.SOLUTION: In a structure for preventing falling of vehicle lower part closing plates, roughly rectangular vehicle lower part closing plates 2 and 2 are inserted into lower face opening receiving parts 1 and 1 of a vehicle body 10 from a vehicle exterior side, brought into contact with end edges 11 and 16 of the lower face opening receiving parts from a vehicle interior side, and fixed to the end edges by fastening bolts 3 from the vehicle exterior side. The vehicle lower part closing plates 2 and 2 are plates divided in a longitudinal direction, and connected foldably upward or expandably/contractibly in the longitudinal direction on division boundaries 23 and 23. Ends 21 and 21 in the longitudinal direction in a state where the vehicle lower part closing plates are folded or contracted can be inserted into the lower face opening receiving parts 1 and 1, and stop parts 13 and 14 covering the ends in the longitudinal direction in a stretched state are formed at base end reinforcing ribs 12 and 15 of the end edges.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a structure for preventing a lower cover plate for a vehicle from falling off, for example, to close a lower surface of a vehicle body of a railway vehicle from the viewpoint of rectification when the vehicle is running.

In general, in a railway vehicle that travels at a high speed such as a Shinkansen, a vehicle lower cover plate is attached to an opening receiving portion on the lower surface of the vehicle body from the viewpoint of rectification to reduce air resistance during vehicle travel. Further, the vehicle lower cover plate is brought into contact with the edge of the opening receiving portion from the inside of the vehicle in order to perform maintenance and inspection of various electric devices and air conditioning devices housed between the floor and the lower surface of the vehicle body. The structure which fixes by fastening a bolt from the outside is adopted. Therefore, when the bolt fastening is insufficient due to artificially forgotten tightening or vibration during traveling, the vehicle lower cover plate may fall off from the opening receiving portion on the lower surface of the vehicle body.
In order to cope with this problem, for example, Patent Document 1 discloses a vehicle lower cover plate dropout prevention device having the following structure.

  The vehicle lower cover plate dropout prevention device described in Patent Document 1 is supported by a lower cover plate receiver with a substantially rectangular lower cover plate that is provided with cuts at opposite edges and covers the lower surface of the vehicle body. The lower cover plate holder is penetrated from the outside of the vehicle with an upward bolt, and a presser foot is screwed to the upward bolt and the side where the cut of the lower cover plate is provided is engaged, A device for preventing the lower cover plate for a vehicle from falling off by moving the bolt from the outside of the vehicle, the hole being provided in the lower cover plate holder, and the inside of the vehicle from the outside through the hole. An engaging body that is detachably provided and is engageable with a side where the lower cover plate is cut, and a pressing body that presses the engaging body in the direction of insertion into the interior of the vehicle are provided.

Japanese Patent No. 3029785

However, the apparatus for preventing the vehicle lower cover plate from falling off described in Patent Document 1 presses the engagement body in the direction of inserting the engagement body from the outside to the inside of the side where the cut of the vehicle lower cover plate is provided. Since the structure is engaged by the body, if the lower cover plate for the vehicle is not set at an appropriate position, the engaging body abuts on a portion other than the side where the cut is provided and engages the side where the cut is provided. There was a fear that I could not. Therefore, in order to make the above-described drop-off prevention device function reliably, a new operation is required in which the lower cover plate for the vehicle is set at an appropriate position and the engaging body is inserted into the interior from the outside of the vehicle by the pressing body. However, if the new operation is forgotten due to human error, there is a problem that the possibility that the lower cover plate for the vehicle will fall off from the opening receiving portion on the lower surface of the vehicle body is not solved.
Further, since the engaging body is provided so as to be able to be inserted into and removed from the outside of the vehicle through a hole provided in the lower blocking plate holder, the engaging body is surely provided on the side where the cut of the lower blocking plate for the vehicle is provided. The act of confirming engagement has not always been easy. For this reason, there has been a problem that an artificial mistake that causes the user to misunderstand that the engaging body is not engaged with the side where the notch of the lower cover plate for the vehicle is provided is surely engaged.

  The present invention has been made to solve such a problem, and requires a new operation when the lower cover plate for a vehicle is inserted into the lower surface opening receiving portion of the vehicle body and disposed at a predetermined position. It is another object of the present invention to provide a structure for preventing the vehicle lower cover plate from falling off from the lower surface opening receiving portion.

In order to achieve the above object, the vehicle lower cover plate drop-off preventing structure according to the present invention has the following configuration.
(1) A substantially rectangular lower cover plate for a vehicle is inserted into the lower surface opening receiving portion of the vehicle body from the outside of the vehicle, is brought into contact with the edge of the lower surface opening receiving portion from the inside of the vehicle, and is tightened with a bolt from the outside of the vehicle. A structure for preventing the vehicle bottom cover plate to be fixed to the edge portion,
The vehicle lower cover plate is divided in the longitudinal direction and connected so as to be foldable upward at the division boundary or extendable in the longitudinal direction.
The bottom opening receiving portion can be inserted with a longitudinal end portion in a bent state or a contracted state of the vehicle lower cover plate, and a stopper portion covering the longitudinal end portion in the extended state is a base end reinforcement of the end edge portion. It is formed in a rib.
Here, the “longitudinal direction” means a direction along the long side or a direction along the short side of the substantially rectangular lower cover plate for a vehicle.

In the present invention, the vehicle lower cover plate is divided in the longitudinal direction and connected to the division boundary so that it can be bent upward or contracted in the longitudinal direction. The distance can be shortened in a folded or contracted state and expanded in an extended state.
Further, the lower end opening receiving portion can be inserted with a longitudinal end portion in a bent state or a contracted state of the lower cover plate for a vehicle, and a stopper portion covering the longitudinal end portion in the extended state is used as a base end reinforcing rib on the end edge portion. Since it is formed, the longitudinal end is inserted into the space formed by the edge of the lower surface opening receiving portion, the base reinforcing rib and the stopper, with the vehicle bottom cover plate folded or contracted, and inserted. Later, the lower cover plate for the vehicle can be returned to the extended state, and the end in the longitudinal direction can be restrained by the stopper. Therefore, even if the subsequent bolt tightening becomes insufficient due to artificial forgetting tightening or vibration during traveling, the lower cover plate for the vehicle is restrained by the stopper at the longitudinal end, and the bottom opening receiving portion Can be prevented from falling off.
Therefore, when the lower cover plate for a vehicle is inserted into the lower surface opening receiving portion of the vehicle body and disposed at a predetermined position, the lower lower blocking plate for the vehicle is dropped from the lower surface opening receiving portion without requiring a new operation. Can be prevented.
In addition, the lower cover plate for a vehicle that can be bent at the dividing boundary can return to the extended state by its own weight from the bent state in which the dividing boundary is lifted upward, but a return spring (not shown) is provided at the dividing boundary, It can be returned to the extended state by the biasing force of the spring.
The vehicular lower cover plate that can be expanded and contracted at the dividing boundary can be provided with a return spring at the dividing boundary and returned to the extended state by the urging force of the spring.

(2) In the vehicle dropout prevention structure described in (1),
The dividing boundary of the lower cover plate for a vehicle is provided with a locking mechanism that automatically locks the latch when the vehicle returns to the extended state.

  In the present invention, a locking mechanism is provided at the dividing boundary of the lower cover plate for the vehicle so that the latch is automatically locked when the vehicle returns to the extended state. The lower cover plate for the vehicle does not return from the extended state to the bent state or the contracted state due to strong winds at the time. Therefore, the lower cover plate for a vehicle can further reduce the possibility that the end in the longitudinal direction is further restrained by the stopper and falls off from the lower surface opening receiving portion of the vehicle body.

(3) In the structure for preventing the vehicle bottom cover plate from falling off as described in (2),
The locking mechanism includes a latch operation portion that protrudes downward from the vehicle lower cover plate when the latch is locked.

In the present invention, the locking mechanism is provided with a latch operation portion that projects downward from the lower cover plate for the vehicle when the latch is locked, so whether or not the latch of the locking mechanism is locked, The latch operation part which protruded below the lower cover board for vehicles can be confirmed visually.
Therefore, it is possible to prevent an artificial mistake that makes a mistake when the latch of the locking mechanism is locked although it is not locked.

  According to the present invention, when the lower cover plate for a vehicle is inserted into the lower surface opening receiving portion of the vehicle body and disposed at a predetermined position, the lower cover for the vehicle is not moved from the lower surface opening receiving portion without requiring a new operation. It is possible to provide a structure for preventing the lower cover plate for a vehicle from falling off, which can prevent the plate from falling off.

It is the top view seen from the vehicle inside in the drop-off prevention structure of the lower cover board for vehicles of embodiment which concerns on this invention. It is BB sectional drawing shown in FIG. It is sectional drawing in the bending state of the lower cover board for vehicles shown in FIG. It is the A section detailed top view shown in FIG. It is the A section detailed side view shown in FIG. It is BB sectional drawing of the modification in the drop-off prevention structure of the lower cover board for vehicles shown in FIG.

  Next, the structure for preventing the vehicle lower cover plate from falling off will be described in detail with reference to FIGS. FIG. 1 is a plan view seen from the inside of a vehicle in a dropout prevention structure for a vehicle lower covering plate according to an embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line BB shown in FIG. FIG. 3 shows a cross-sectional view of the vehicle lower cover plate shown in FIG. 2 in a bent state. FIG. 4 is a detailed plan view of a part A shown in FIG. FIG. 5 shows a detailed side view of the part A shown in FIG.

As shown in FIGS. 1 to 3, the vehicle lower cover plate drop-off preventing structure of the present embodiment has a substantially rectangular vehicle lower cover plate 2, 2 attached to the lower surface opening receiving portion 1 of the vehicle body 10 from the outside of the vehicle. The structure is inserted and brought into contact with the edge portions 11 and 16 of the lower surface opening receiving portion 1 from the vehicle inner side, and the bolt 3 is fastened from the vehicle outer side and fixed to the edge portions 11 and 16.
The lower cover plates 2 and 2 for a vehicle are substantially rectangular plates having reinforcing ribs 22 formed on the upper surface, and are divided into two at the center in the longitudinal direction. A plurality of reinforcing ribs 22 are formed along the longitudinal direction, and the reinforcing ribs 22 are arranged at equal intervals. A plurality of long holes 25 for gripping are formed in the plate body between the reinforcing ribs 22.
In addition, a plurality of hinges 24 and 24 are attached to the dividing boundaries 23 and 23 of the vehicle lower cover plates 2 and 2 along the boundary line. The divided lower cover plates 2 and 2 for the vehicle are connected so as to be bent upward from the extended state with hinges 24 and 24 as axes. Note that the lower cover plates 2 and 2 for the vehicle cannot be bent downward from the extended state around the hinges 24 and 24 because the edges of the reinforcing ribs 22 and 22 are in contact with each other in the extended state.
Further, nuts 31 that are bolted to the edge portions 11 and 16 of the lower surface opening receiving portion 1 are fixed to the longitudinal direction end portions 21 and 21 of the vehicle lower cover plate 2 and 2. A plurality of nuts 31 (for example, three on one side) are arranged at opposite positions in the longitudinal direction.
In addition, in the lower surface opening receiving portions 1 and 1 of the vehicle body 10, vehicle lower cover plates 2 and 2 having the same structure are disposed adjacent to each other.

The lower surface opening receiving portions 1, 1 of the vehicle body 10 have end edges 11, 16 where the longitudinal ends 21, 21 of the lower cover plates 2, 2 abut from the inside of the vehicle and the bases of the end edges 11, 16. Proximal end reinforcing ribs 12 and 15 are provided standing upward from the end.
Longitudinal ends 21 and 21 in the bent state of the vehicle lower cover plates 2 and 2 can be inserted into the lower surface opening receiving portions 1 and 1, and the stoppers 13 and 14 covering the longitudinal ends 21 and 21 in the extended state. Is fixed to the base end reinforcing ribs 12 and 15. The stoppers 13 and 14 are metal bodies having a predetermined bending strength, but may be spring bodies having a predetermined urging force. In addition, a certain gap is formed between the lower ends of the stop portions 13 and 14 and the upper ends of the longitudinal end portions 21 and 21, but the tips of the stop portions 13 and 14 are formed on an upward inclined surface. Also good.
The upper and lower gaps formed by the edge portions 11 and 16 and the stopper portions 13 and 14 are various electric devices mounted on the floor surface of the vehicle body 10 when the vehicle lower cover plates 2 and 2 are bent upward and inserted. Set the size to avoid interference with equipment and air-conditioning equipment.

Therefore, in the space formed by the end edge portions 11 and 16, the base end reinforcing ribs 12 and 15, and the stopper portions 13 and 14, the lower end plate 2, 2 for the vehicle is folded and the longitudinal direction end portion 21, 21 can be inserted. Further, after the longitudinal end portions 21 and 21 are inserted into the same space, the vehicle lower cover plates 2 and 2 are returned to the extended state, and the longitudinal end portions 21 and 21 are restrained by the stopper portions 13 and 14. it can.
When the lower cover plates 2 and 2 for the vehicle return to the extended state, the lower surface opening receiving portions 1 and 1 and the longitudinal end portions 21 and 21 are bolted from the outside of the vehicle. A bolt 32 is attached to the bolt 3. Even if the bolt fastening is insufficient due to artificially forgotten tightening or vibration during traveling, the longitudinal end portions 21 and 21 are restrained by the stopper portions 13 and 14, and the lower cover plate 2 for the vehicle. 2 can be prevented from falling off the lower surface opening receiving portions 1 and 1.

As shown in FIGS. 4 and 5, the divided vehicle lower cover plates 2, 2 are automatically latched at the dividing boundaries 23, 23 of the vehicle lower cover plates 2, 2 when the vehicle is restored to the extended state. A locking mechanism 4 is provided for locking. The locking mechanism 4 includes a latch 41, an engaged body 42, a latch operation unit 43, and an apparatus main body 44. An apparatus main body 44 that houses the latch 41 and the latch operation portion 43 is mounted on one vehicle lower cover plate 2, and an engaged body 42 that engages with the front end side of the latch 41 is mounted on the other vehicle lower cover plate 2. ing.
The latch 41 is a substantially rectangular plate-like body, and the tip end upper end 412 is formed in a substantially horizontal plane, and the tip end lower end 411 is formed in an inclined surface tapered toward the tip. A rack 413 that advances and retreats horizontally is formed on the side wall of the base end portion of the latch 41. A push spring 416 is attached to the rear end of the latch 41.
The engaged body 42 is a plate-shaped body having a substantially hat-shaped cross section, and is formed so that the top end 412 on the front end side of the latch 41 can come into contact with the top.

The apparatus main body 44 is a substantially rectangular tube, and houses the proximal end portion of the latch 41 and the push spring 416, and supports a pinion 414 that meshes with the rack 413 and an arcuate rack 417 that meshes with the pinion 414. .
The latch operation portion 43 is a lever member connected to the arc-shaped rack 417 and protrudes obliquely downward from the lower end of the vehicle lower cover plate 2 when the latch 41 is engaged with the engaged body 42. . When the latch operation unit 43 is manually operated from the inclined state to the horizontal state, the latch 41 is retracted, and the distal end upper end 412 is detached from the engaged body 42. When the latch operating portion 43 is released from the hand, the latch 41 is pushed forward by the push spring 416 and the leading end 412 is engaged with the engaged body 42. Therefore, the latch 41 is always biased in the engaging direction.
When the vehicle lower cover plates 2 and 2 return from the bent state to the extended state, the latch 41 is pushed out to the forward end. The latch 41 pushed out to the forward end is pushed back by the lower end 411 formed on the inclined surface abutting against the top of the engaged body 42 and then moved forward again to be engaged with the engaged body 42. .

<Effect>
According to the vehicle lower cover plate drop-off preventing structure of the present embodiment, the vehicle lower cover plates 2 and 2 are divided in the longitudinal direction and connected to the dividing boundaries 23 and 23 so that they can be bent upward. The distance between the longitudinal end portions 21 of the lower cover plates 2 and 2 can be shortened in the bent state and expanded in the extended state.
Further, the lower end opening receiving portions 1, 1 can be inserted with the longitudinal end portions 21, 21 in the folded state of the vehicle lower cover plates 2, 2, and the stopper 13 covers the longitudinal end portions 21, 21 in the extended state. , 14 are formed on the base end reinforcing ribs 12 and 15 of the end edge portions 11 and 16, so that in the space formed by the end edge portions 11 and 16, the base end reinforcing ribs 12 and 15, and the stopper portions 13 and 14, The vehicle lower cover plates 2 and 2 are bent and the longitudinal end portions 21 and 21 are inserted. After the insertion, the vehicle lower cover plate 2 and 2 are returned to the extended state, and the longitudinal end portions 21 and 21 are moved. The stoppers 13 and 14 can be restrained. Therefore, even if the subsequent bolt fastening becomes insufficient due to artificial forgetting tightening or vibration during traveling, the lower cover plates 2 and 2 for the vehicle have the longitudinal end portions 21 and 21 as the stop portions 13 and 21. Therefore, it is possible to prevent the lower surface opening receiving portions 1 and 1 from falling off.
Therefore, at the stage where the lower cover plates 2 and 2 for the vehicle are inserted into the lower surface opening receiving portions 1 and 1 of the vehicle body 10 and disposed at predetermined positions, the lower surface opening receiving portion 1 and 1 can prevent the vehicle lower cover plates 2 and 2 from falling off.
The vehicle lower cover plates 2 and 2 that can be bent at the dividing boundaries 23 and 23 can return to the extended state by their own weight from the bent state in which the dividing boundaries 23 and 23 are lifted upward. It is also possible to provide a return spring (not shown) and return it to the extended state by the biasing force of the spring.

  Further, according to the present embodiment, the dividing boundary 23, 23 of the lower cover plate 2, 2 for the vehicle is provided with the locking mechanism 4 that automatically locks the latch 41 when the vehicle is restored to the extended state. Unexpected external force during vehicle travel (for example, strong wind when passing through a bridge, etc.) does not cause the vehicle lower cover plates 2 and 2 to return from the extended state to the bent state. Therefore, the lower cover plates 2 and 2 for the vehicle can further reduce the possibility that the longitudinal end portions 21 and 21 are further restrained by the stopper portions 13 and 14 and fall off from the lower surface opening receiving portions 1 and 1 of the vehicle body 10.

In addition, according to the present embodiment, the locking mechanism 4 includes the latch operation portion 43 that protrudes downward from the vehicle lower cover plates 2 and 2 when the latch 41 is locked. Whether or not the latch 41 is locked can be confirmed by visual observation or the like on the latch operation portion 43 protruding downward from the lower cover plates 2 and 2 for the vehicle.
Therefore, it is possible to prevent a human error that makes a mistake when the latch 41 is locked although the latch 41 of the locking mechanism 4 is not locked.

As mentioned above, although embodiment was described in detail about the fall prevention structure of the lower cover board for vehicles of this invention, this invention is not limited to this, A various change is possible in the range which does not deviate from the meaning.
For example, in the present embodiment, the vehicle lower cover plates 2 and 2 are divided in the longitudinal direction and connected so as to be bent upward at the dividing boundaries 23 and 23. However, as shown in FIG. The plates 2B and 2C can be divided in the longitudinal direction and connected so as to be stretchable in the longitudinal direction at the division boundaries 23B and 23C.
Specifically, sliding contact surfaces that slide in contact with each other in the longitudinal direction are formed on the divided boundaries 23B and 23C. Further, a locking pin 23C3 is projected from the reinforcing rib 22C of one vehicle lower cover plate 2C, and the locking pin 23C3 is fitted to the reinforcing rib 22B of the other vehicle lower cover plate 2B so as to have a predetermined length. A movable long hole 23B2 is formed. Further, a spring seat 23C1 is fixed to one vehicle lower cover plate 2C, and a return spring 23C2 for pushing back the other vehicle lower cover plate 2B is attached to the spring seat 23C1. A contact surface of the return spring 23C2 is formed at the tip 23B1 of the dividing boundary of the other lower cover plate 2B for a vehicle.
According to the vehicle lower cover plates 2B and 2C formed in the above-described structure, the lower edge opening receiving portions 1 and 1 are formed by the end edge portions 11 and 16, the base end reinforcing ribs 12 and 15, and the stopper portions 13 and 14. In the space, the lower cover plates 2B, 2C for the vehicle are contracted in the longitudinal direction to insert the longitudinal end portions 21B, 21C. After the insertion, the lower cover plates 2B, 2C for the vehicle are returned to the extended state, The portions 21B and 21C can be restrained by the stop portions 13 and 14. Therefore, even when the subsequent bolt fastening is insufficient due to artificial forgetting tightening or vibration during traveling, the lower cover plates 2B and 2C for the vehicle have the end portions 21B and 21C in the longitudinal directions 21B and 21C, Therefore, it is possible to prevent the lower surface opening receiving portions 1 and 1 from falling off.
Moreover, according to this modification, since a division | segmentation boundary is not protruded upwards, interference with the various electric equipment with which the floor surface of the vehicle body 10 was mounted | worn can be avoided easily.

DESCRIPTION OF SYMBOLS 1 Lower surface opening receiving part 2 Lower cover board for vehicles 3 Bolt 4 Locking mechanism 10 Car body 11 End edge part 12 Base end reinforcement rib 13 Stop part 14 Stop part 15 Base end reinforcement rib 16 End edge part 21 Longitudinal end part 22 Reinforcement Rib 23 Split boundary 24 Hinge 41 Latch 42 Engagement body 43 Latch operation part

Claims (3)

A substantially rectangular lower cover plate for a vehicle is inserted into the lower surface opening receiving portion of the vehicle body from the outside of the vehicle, is brought into contact with the edge of the lower surface opening receiving portion from the inside of the vehicle, and is tightened with a bolt from the outside of the vehicle. A structure for preventing the vehicle bottom cover plate from falling off, which is fixed to the edge,
The vehicle lower cover plate is divided in the longitudinal direction and connected so as to be foldable upward at the division boundary or extendable in the longitudinal direction.
The bottom opening receiving portion can be inserted with a longitudinal end portion in a bent state or a contracted state of the vehicle lower cover plate, and a stopper portion covering the longitudinal end portion in the extended state is a base end reinforcement of the end edge portion. A structure for preventing a vehicle bottom cover plate from falling off, which is formed on a rib. The structure for preventing the vehicle bottom cover plate from falling off according to claim 1,
A structure for preventing the lower cover plate from falling off, wherein a locking mechanism is provided at the dividing boundary of the lower cover plate for the vehicle so that the latch automatically locks when the vehicle returns to the extended state. In the structure for preventing the vehicle bottom cover plate from falling off according to claim 2,
The locking mechanism for the vehicle lower cover plate according to claim 1, wherein the locking mechanism includes a latch operation portion that protrudes downward from the vehicle lower cover plate when the latch is locked.

Images