JP2017007386A - 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 a vehicle lower part closing plate, 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 are brought into contact with lower face opening receiving parts 1 and 1 disposed at a position where the vehicle lower part closing plates face each other with a lower face opening part 9 of a vehicle body 10 disposed between them from a vehicle interior side, and the vehicle lower part closing plates 2 are detachably fixed to the lower face opening receiving parts 1 and 1 by fastening bolts 3 from a vehicle exterior side. On the lower face opening receiving parts, at least a pair of flange engaging pins 51 and 52 are provided so as to project toward the vehicle interior side, and a plunger pin 4 having a lock nail 41 projecting on the vehicle interior side and energized on the vehicle interior side by an elastic body 46 is provided.SELECTED DRAWING: Figure 1

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 a lower surface opening receiving portion of a vehicle body from the viewpoint of rectification that reduces air resistance during vehicle travel. In addition, the lower cover plate for a vehicle is brought into contact with the lower surface opening receiving portion from the inside of the vehicle and a bolt is attached from the outside of the vehicle in order to perform maintenance and inspection of various electric devices and air conditioners housed between the floor and the lower surface of the vehicle body. A structure that is fixed by fastening is adopted. Therefore, when the bolt fastening is insufficient due to artificially forgotten tightening or vibration during running, the lower cover plate for the vehicle may drop off from the lower surface opening receiving portion 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 lower surface opening receiving portion 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 when the lower cover plate for a vehicle is disposed at a predetermined position of the lower surface opening receiving portion of the vehicle body, the lower surface opening is not required. It is an object of the present invention to provide a structure for preventing a vehicle lower cover plate from falling off from a 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 brought into contact with a lower surface opening receiving portion provided at a position facing the lower surface opening of the vehicle body from the vehicle inner side, and a bolt is fastened from the vehicle outer side to tighten the bolt. A vehicle lower cover plate for preventing the lower cover plate from being detachably fixed to the lower surface opening receiving portion.
The lower surface opening receiving portion is provided with at least a pair of hooked locking pins protruding toward the inside of the vehicle, and provided with a plunger pin having a locking claw protruding toward the inside of the vehicle and being urged toward the vehicle by the elastic body. Was it,
The vehicle lower cover plate is formed with an engaged portion to be engaged with each hooked locking pin and a locking hole into which a locking claw of the plunger pin is inserted.

In the present invention, the lower surface opening receiving portion is provided with at least a pair of hooked locking pins protruding toward the vehicle inner side, and has a locking claw protruding toward the vehicle inner side and is urged toward the vehicle inner side by the elastic body. Since the plunger pin is provided, and the lower cover plate for the vehicle is formed with an engaged portion to be engaged with each hooked locking pin and a locking hole into which the locking pin of the plunger pin is inserted, By simply bringing the lower cover plate for a vehicle into contact with the lower surface opening receiving portion of the vehicle body from the inside of the vehicle and engaging each hooked locking pin with the engaged portion, the locking pin of the plunger pin is engaged with the lower lower plate for the vehicle. Is automatically inserted into the locking hole, and the displacement of the lower cover plate for the vehicle relative to the lower surface opening receiving portion can be suppressed.
Therefore, even if the bolt fastening of the lower cover plate for the vehicle to the lower opening receiving portion after that becomes insufficient due to artificial forgetting to tighten or vibration during running, etc., the lower cover plate for the vehicle is locked with a hook. Restrained by the pin and the plunger pin, it is possible to prevent the lower cover plate for the vehicle from dropping from the lower surface opening receiving portion of the vehicle body.
Therefore, when the lower cover plate for a vehicle is disposed at a predetermined position in the lower surface opening receiving portion of the vehicle body, the lower lower blocking plate for the vehicle is prevented from dropping from the lower surface opening receiving portion without requiring a new operation. it can.

(2) In the vehicle dropout prevention structure described in (1),
The plunger pin is characterized in that a knob portion protruding outward from the lower surface opening receiving portion is formed.

  In the present invention, since the plunger pin is formed with a knob portion that protrudes outward from the lower surface opening receiving portion, when the vehicle lower cover plate is removed from the lower surface opening receiving portion, the knob portion is simply pulled outward. Thus, the locked state of the plunger pin can be easily released. In addition, when the latching claw of the plunger pin is not inserted into the locking hole of the lower cover plate for the vehicle, the knob part protrudes more outward than the normal position, so it is easy to lock the plunger pin. Can be found.

(3) A substantially rectangular lower cover plate for a vehicle is brought into contact with a lower surface opening receiving portion provided at a position facing the lower surface opening portion of the vehicle body from the vehicle inner side, and a bolt is fastened from the vehicle outer side to tighten the bolt. A vehicle lower cover plate for preventing the lower cover plate from being detachably fixed to the lower surface opening receiving portion.
The lower surface opening receiving portion is provided with at least a pair of hooked locking pins protruding toward the vehicle interior, and formed with a locking hole,
The vehicle lower cover plate has an engaging portion that engages with each hooked locking pin, and has an engaging claw that is inserted into the engaging hole of the lower surface opening receiving portion. A plunger pin that is urged to the outside of the vehicle by the pressing force of is provided.

In the present invention, at least a pair of hooked locking pins are provided on the lower surface opening receiving portion so as to protrude to the vehicle interior side, and a locking hole is formed. Provided with a plunger pin that forms an engaged portion to be engaged with the stop pin and that has a locking claw inserted into the locking hole of the lower surface opening receiving portion and is urged to the outside of the vehicle by the pressing force of the elastic body Therefore, the locking claw of the plunger pin can be opened on the lower surface by simply bringing the lower cover plate for the vehicle into contact with the lower surface opening receiving portion of the vehicle body from the inside of the vehicle and engaging the hooked locking pins with the engaged portions. By being automatically inserted into the locking hole of the receiving portion, the displacement of the lower cover plate for the vehicle relative to the lower surface opening receiving portion can be suppressed.
Therefore, even if the bolt fastening of the lower cover plate for the vehicle to the lower opening receiving portion after that becomes insufficient due to artificial forgetting to tighten or vibration during running, etc., the lower cover plate for the vehicle is locked with a hook. Restrained by the pin and the plunger pin, it is possible to prevent the lower cover plate for the vehicle from dropping from the lower surface opening receiving portion of the vehicle body.
Therefore, when the lower cover plate for a vehicle is disposed at a predetermined position in the lower surface opening receiving portion of the vehicle body, the lower lower blocking plate for the vehicle is prevented from dropping from the lower surface opening receiving portion without requiring a new operation. it can.

(4) In the structure for preventing the vehicle bottom cover plate from falling off as described in (3),
A peep hole is formed in the lower face opening receiving portion adjacent to the locking hole, and the plow hole is formed in the lower cover plate for the vehicle when the lower cover plate for the vehicle is fixed to the lower face opening receiving portion. It is characterized in that an indicator pin that can be visually observed is provided.

In the present invention, a peephole is formed in the lower surface opening receiving portion adjacent to the locking hole, and the lower cover plate for the vehicle is formed from the peephole when the lower cover plate for the vehicle is fixed to the lower surface opening receiving portion. Since a visible indicator pin is provided, if the bolt fastening of the lower cover plate for the vehicle to the underside opening receiving part becomes insufficient due to forgetful tightening or vibration during driving, etc., the indicator pin The bolt fastening abnormality can be detected.
Accordingly, it is possible to avoid an artificial mistake that makes a mistake in thinking that the bolt is fastened even though the bolt fastening of the lower cover plate for the vehicle to the lower surface opening receiving portion is insufficient.

(5) In the structure for preventing the vehicle bottom cover plate from falling off according to any one of (1) to (4),
The engaged portion includes a notch portion and a hole portion, and the notch portion includes a guide portion having a distal end widened in a substantially V shape, and the hole portion includes the hooked engagement member. A widened portion through which the collar portion of the stop pin can pass is provided.

  In the present invention, the engaged part is a notch part and a hole part, and the notch part is provided with a guide part whose tip is expanded in a substantially V shape, and the hole part is provided with a hook. Since the widened part through which the hook part of the locking pin can pass is provided, the hooked locking pin, the notch part and the hole part can be smoothly engaged via the guide part and the widened part. That is, when the lower cover plate for a vehicle is brought into contact with the lower surface opening receiving portion from the inside of the vehicle, the hook portion of one hooked locking pin is inserted into the hole portion from the widened portion, and then the other hooked locking pin By moving the leg portion along the guide portion, each hooked locking pin, the notch portion and the hole portion can be easily and reliably engaged. Therefore, it is possible to easily perform the engagement operation between the hooked locking pins and the engaged portions that are difficult to see from the outside of the vehicle, and to reduce human errors.

  According to the present invention, when the lower cover plate for a vehicle is disposed at a predetermined position of the lower surface opening receiving portion of the vehicle body, the lower lower blocking plate for the vehicle is dropped from the lower surface opening receiving portion without requiring a new operation. Therefore, it is possible to provide a structure for preventing the vehicle bottom cover 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 1st Embodiment which concerns on this invention. It is AA sectional drawing shown in FIG. It is BB sectional drawing shown in FIG. It is CC sectional drawing shown in FIG. It is CC sectional drawing at the time of the attachment at the time of attachment of the lower cover board for vehicles shown in FIG. 1, and removal. It is the top view seen from the vehicle inside in the drop-off prevention structure of the lower cover board for vehicles of 2nd Embodiment which concerns on this invention. It is DD sectional drawing shown in FIG. It is EE sectional drawing shown in FIG. It is FF sectional drawing shown in FIG. 6, Comprising: (a) is a bolt fastening of the lower cover board for vehicles to a lower surface opening receiving part, (b) is the said bolt fastening loosened, (c) is a plunger. This is when the pin is disengaged. FIG. 7 is a cross-sectional view taken along line GG shown in FIG. 6, where (a) is when the vehicle lower cover plate is bolted to the lower surface opening receiving portion, and (b) is when the bolt fastening is loosened.

(First embodiment)
Next, the structure for preventing the vehicle bottom cover plate from falling off according to the first embodiment of the present invention 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 cover plate according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line AA shown in FIG. FIG. 3 is a cross-sectional view taken along line BB shown in FIG. FIG. 4 is a cross-sectional view taken along the line CC shown in FIG. FIG. 5 is a cross-sectional view taken along the line C-C when the lower cover plate for a vehicle shown in FIG. 1 is attached and removed.

  As shown in FIGS. 1 and 2, the vehicle lower cover plate drop-off preventing structure according to the present embodiment is configured by inserting a substantially rectangular vehicle lower cover plate 2 from the lower surface opening 9 of the vehicle body 10 into the vehicle interior. The vehicle lower cover plate 2 is brought into contact with the lower surface opening receiving portions 1 and 1 provided at positions opposed to each other with the lower surface opening 9 from the vehicle inner side, and the bolt 3 is fastened from the vehicle outer side to fasten the vehicle lower cover plate. 2 is detachably fixed to the lower surface opening receiving portions 1 and 1.

  The lower surface opening receiving portions 1 and 1 of the vehicle body 10 are formed at positions facing each other with a lower surface opening 9 formed substantially constant in the vehicle longitudinal direction. The lower surface opening receiving portions 1, 1 have end edges 11, 16 with flat surfaces on which the vehicle lower cover plate 2 abuts from the vehicle inner side, and the vehicle interior from the base end portions of the edge edges 11, 16. And proximal reinforcing ribs 12 and 13 projecting from the base.

  At least one pair of hooked locking pins 51 and 52 are erected on the edge portions 11 and 16 of the lower surface opening receiving portions 1 and 1 toward the vehicle inner side at positions facing each other in the vehicle front-rear direction. Each hooked locking pin 51, 52 has a circular hook part 511, 521 at the head. The flange portions 511 and 521 are formed concentrically with the leg portions 512 and 522, and the outer diameters of the flange portions 511 and 521 are formed larger than the outer diameters of the leg portions 512 and 522. The upper and lower gaps between the flange portions 511 and 521 and the end edge portions 11 and 16 are formed to be about 2 to 3 times the plate thickness of the vehicle lower cover plate 2. The base end reinforcing ribs 12 and 13 are used for sliding the vehicle lower cover plate 2 in the directions of the arrows Q1 and Q2 to engage and disengage the engaged portions 61 and 62 with the hooked locking pins 51 and 52. It is formed at a position where it does not interfere with the end of the vehicle lower cover plate 2. Note that the flange portions 511 and 521 may have a hook shape, and may be integral with or separate from the leg portions 512 and 522.

The lower cover plate 2 for a vehicle is a substantially rectangular plate-like body in which reinforcing ribs 22 are formed on the upper surface of the lid 21. The lid body 21 is formed on a flat surface and abuts against the edge portions 11 and 16 of the lower surface opening receiving portions 1 and 1. A plurality of reinforcing ribs 22 are formed along the vehicle front-rear direction, and the reinforcing ribs 22 are arranged at substantially equal intervals.
In addition, the lid body 21 is formed with a notch (engaged portion) 61 that engages with one hooked locking pin 51 erected on the end edge portion 11 in front of the vehicle in the lower surface opening receiving portion 1. A hole portion (engaged portion) 62 that engages with the other hooked locking pin 52 erected on the edge 16 at the rear of the vehicle is formed.

  On the vehicle front side of the notch 61, there is provided a guide portion 611 whose tip is expanded in a substantially V shape. A substantially U-shaped engagement groove 612 is formed at the base end of the guide portion 611. On the vehicle front side of the hole portion 62, an arcuate widened portion 621 through which the flange portion 521 of the hooked locking pin 52 can pass is provided. A longitudinally long engagement groove 622 communicates with the rear of the widened portion 621. The vertically long engagement groove 622 is formed long in the left-right direction of the vehicle. By providing the guide portion 611 and the widened portion 621, the engagement work between the leg portions 512 and 522 of the hooked locking pins 51 and 52 and the engagement grooves 612 and 622 that are difficult for the operator to visually recognize from the outside of the vehicle (so-called Blind operation) can be performed smoothly, and human error can be reduced.

Further, the engaging groove 612 formed in the notch 61 is engaged with one hooked locking pin 51 erected on the end edge 11, and the engaging groove 622 formed in the hole 62 is the end edge. By being engaged with the other hooked locking pin 52 erected on the portion 16, the vehicle lower cover plate 2 is restrained from being displaced in the vehicle left-right direction and the vehicle up-down direction.
Since the lower cover plate 2 for a vehicle has a small amount protruding upward from the lower surface opening receiving portion 1, there is an advantage that it is possible to easily avoid interference with various electric devices, air conditioners and the like mounted on the floor surface of the vehicle body 10. is there.

A nut 31 that is bolted to the edge portions 11 and 16 of the lower surface opening receiving portion 1 is fixed to the upper surface of the lid 21. A plurality of nuts 31 are arranged at opposing positions in the vehicle longitudinal direction.
A laterally long hole 32 through which the bolt 3 is inserted is formed in the end edge portion 11 in front of the vehicle corresponding to the position where the nut 31 is disposed. The horizontally long hole 32 is formed long in the vehicle front-rear direction. A longitudinally long hole 33 through which the bolt 3 is inserted is formed in the edge 16 at the rear of the vehicle. The vertically long hole 33 is formed long in the vehicle left-right direction.

  The horizontally elongated hole 32 is formed in the same direction as the engagement groove 612 engaged with the hooked locking pin 51, and the vertical hole 33 is formed with the engagement groove 622 engaged with the hooked locking pin 52. It is formed with the same orientation. By forming them in the same direction, it is possible to absorb the positional deviations of the front and rear, left and right of the lower cover plate 2 for the vehicle, to perform the bolt fastening reliably, and to reduce human errors.

  As shown in FIGS. 1 and 3 to 5, the end edge portion 11 of the lower surface opening receiving portion 1 has a locking claw 41 protruding toward the inside of the vehicle, and a plunger that is biased toward the inside of the vehicle by an elastic body 46. A pin 4 is provided. In addition, a locked member 23 having a substantially hat-shaped cross section with a central portion 231 protruding inward of the vehicle is fixed to the lid 21 of the lower cover plate 2 for a vehicle. A locking hole 232 into which the locking claw 41 of the plunger pin 4 is inserted is formed in the central portion 231 of the locked member 23. Both end portions 233 of the locked member 23 are fixed to the lid body 21 of the vehicle lower cover plate 2 with bolts 24 between the reinforcing ribs 22.

  The locking claw 41 of the plunger pin 4 is formed by forming an inclined surface 411 on one side surface of a quadrangular column that protrudes toward the inside of the vehicle. The inclined surface 411 is formed so as to be inclined from the upper end portion toward the lower rear side of the vehicle. At the base end portion of the locking claw 41, a stop portion 42 is formed that contacts the central portion 231 of the locked member 23 from the outside of the vehicle. An elastic body 46 is joined to the lower end of the stopper 42. The elastic body 46 is formed by bending a predetermined strip-shaped leaf spring into a substantially rectangular shape and overlapping it at both ends, and fixing the overlapping portion 461 to the edge portion 11 with a bolt 47. Below the stopper 42, shaft portions 43 and 44 having different shaft diameters are extended vertically. The upper shaft portion 43 is formed to have a larger shaft diameter than the lower shaft portion 44. The upper shaft portion 43 is in sliding contact with the cylindrical guide portion 14 erected on the end edge portion 11. The lower shaft portion 44 passes through a through hole 15 formed in the end edge portion 11 and is connected to a knob portion 45 that protrudes to the outside of the vehicle.

When the knob 45 is pulled outward (in the direction of the arrow P), the elastic body 46 is bent and the upper shaft 43 is brought into contact with the end edge 11. At that time, the locking claw 41 of the plunger pin 4 is disengaged from the locking hole 232 formed in the central portion 231 of the locked member 23. In this state, the vehicle lower cover plate 2 can slide in the vehicle front-rear direction (directions of arrows Q1 and Q2), and can be attached to and detached from the lower surface opening receiving portion 1.
That is, when the vehicle lower cover plate 2 is slid forward of the vehicle (in the direction of the arrow Q1), the hooked locking pins 51 and 52 are engaged with the notch 61 and the hole 62, and the plunger pin 4 is engaged. The locking claw 41 is automatically inserted into the locking hole 232, and the vehicle lower cover plate 2 can be attached to a predetermined position of the lower surface opening receiving portion 1.
Further, when the knob 45 is pulled outward (in the direction of arrow P) and the lower cover plate 2 for the vehicle is slid rearward (in the direction of arrow Q2), the locking claw 41 of the plunger pin 4 is engaged with the locking hole 232. And the engagement state between the hooked locking pins 51 and 52 and the notch 61 and the hole 62 is released, and the lower cover plate 2 for the vehicle can be removed from the lower surface opening receiving portion 1.

  When the lower cover plate 2 for the vehicle is slid in the direction of the arrow Q1, the end of the lid 21 comes into contact with the inclined surface 411 of the locking claw 41, and the plunger pin 4 is moved to the outside of the vehicle (the direction of the arrow P). There is no need to pull the knob 45. Further, when the knob portion 45 protrudes more outward than the normal position, the locking claw 41 is not inserted into the locking hole 232, and the locking abnormality of the plunger pin 4 is easily found. be able to.

<Effect>
As described above, according to the structure for preventing the vehicle lower cover plate 2 from falling off according to the present embodiment, the vehicle lower cover plate 2 is brought into contact with the lower surface opening receiving portions 1 and 1 of the vehicle body 10 from the inside of the vehicle. The engaging claw 41 of the plunger pin 4 is automatically inserted into the engaging hole 232 of the lower cover plate 2 for the vehicle simply by engaging the engaging pins 51 and 52 with the hooks with the notches 61 and the holes 62. Thus, the displacement of the lower cover plate 2 for the vehicle with respect to the lower surface opening receiving portions 1 and 1 can be suppressed.
In this state, the vehicle lower cover plate 2 and the lower surface opening receiving portions 1 and 1 are bolted from the outside of the vehicle. However, the bolt fastening is insufficient due to artificial forgetting to tighten or vibration during traveling. Even in this case, the lower cover plate 2 for the vehicle is restrained by the hooked locking pins 51, 52 and the plunger pin 4, so that the lower cover plate 2 for the vehicle falls off the lower surface opening receiving portions 1, 1 of the vehicle body 10. Can be prevented.

(Second Embodiment)
Next, a dropout prevention structure for the vehicle lower cover plate 2B according to the second embodiment of the present invention will be described in detail with reference to FIGS. FIG. 6 is a plan view seen from the vehicle inner side in the dropout prevention structure for the lower cover plate for a vehicle according to the second embodiment of the present invention. FIG. 7 is a cross-sectional view taken along the line DD shown in FIG. FIG. 8 is a cross-sectional view taken along line EE shown in FIG. FIG. 9 is a cross-sectional view taken along line FF shown in FIG. 6, where (a) is bolted to a lower opening plate for a vehicle and (b) is loosened. c) shows when the plunger pin is disengaged. 10A and 10B are cross-sectional views taken along line GG shown in FIG. 6, where FIG. 10A shows a case where the lower cover plate for a vehicle is bolted to the lower surface opening receiving portion, and FIG. 10B shows a case where the bolt fastening is loosened. .

  As shown in FIGS. 6 to 8, the vehicle lower cover plate 2 </ b> B according to the present embodiment has a structure that prevents the vehicle lower cover plate 2 </ b> B from being inserted into the vehicle interior from the lower surface opening 9 of the vehicle body 10. Thus, the lower cover plate 2B for the vehicle is brought into contact with the lower surface opening receiving portions 1 and 1 provided at positions opposed to each other with the lower surface opening 9, and the bolt 3 is fastened from the outside of the vehicle to fasten the lower portion of the vehicle. In this structure, the plate 2B is detachably fixed to the lower surface opening receiving portions 1 and 1.

  The lower surface opening receiving portions 1 and 1 of the vehicle body 10 are formed at positions facing each other with a lower surface opening 9 formed substantially constant in the vehicle longitudinal direction. The lower surface opening receiving portions 1, 1 have end edges 11, 16 with flat surfaces on which the vehicle lower cover plate 2 </ b> B abuts from the vehicle interior side, and vehicle interior sides from the base end portions of the edge edges 11, 16. And proximal reinforcing ribs 12 and 13 projecting from the base.

  At least one pair of hooked locking pins 52 and 53 are erected on the edge portions 11 and 16 of the lower surface opening receiving portions 1 and 1 toward the vehicle inner side at positions facing each other in the vehicle front-rear direction. Each hooked locking pin 52, 53 has a circular flange 521, 531 at the head. The flange portions 521 and 531 are formed concentrically with the leg portions 522 and 532, and the outer diameters of the flange portions 521 and 531 are larger than the outer diameters of the leg portions 522 and 532. The vertical gap between the flange portion 521 and the end edge portion 16 is formed to be about 2 to 3 times the plate thickness of the vehicle lower cover plate 2B. The vertical gap between the flange portion 531 and the edge portion 11 is formed to be about 5 to 6 times the vertical gap between the flange portion 521 and the edge portion 16. The base end reinforcing ribs 12 and 13 slide the vehicle lower cover plate 2B in the directions of arrows S1 and S2 to engage and disengage the hooked locking pins 52 and 53. It is formed at a position where it does not interfere with the end. Note that the flanges 521 and 531 may be hook-shaped, and may be integral with or separate from the legs 522 and 532.

The lower cover plate 2B for a vehicle is a substantially rectangular plate-like body in which the first lid body 21B and the second lid body 25 are partially overlapped and connected. The first lid 21B is formed on a flat surface, and reinforcing ribs 22B are formed on the upper surface thereof. A plurality of reinforcing ribs 22B are formed along the longitudinal direction of the vehicle, and the reinforcing ribs 22B are arranged at substantially equal intervals. Further, the first lid body 21 </ b> B is formed with a notch portion (engaged portion) 63 that engages with the hooked locking pin 52 erected on the end edge portion 16 of the lower surface opening receiving portion 1.
The second lid 25 has a connecting portion 252 connected to the first lid 21 </ b> B, and a fixing portion 251 that is detachably fixed to the end edge portion 11 of the lower surface opening receiving portion 1. Yes. The fixing portion 251 is higher than the connecting portion 252, and the height thereof is approximately the same as the height of the reinforcing rib 22B provided upright on the first lid 21B. The fixing portion 251 is formed with a hole (engaged portion) 64 that engages with the hooked locking pin 53 erected on the end edge portion 11.

On the vehicle rear side of the notch 63, there is provided a guide 631 whose tip is expanded in a substantially V shape. A substantially U-shaped engagement groove 632 is formed at the base end of the guide portion 631.
On the vehicle rear side of the hole portion 64, a long arc-shaped widened portion 641 through which the flange portion 531 of the hooked locking pin 53 can pass is provided. A substantially U-shaped engagement groove 642 is communicated with the front of the widened portion 641. By providing the guide portion 631 and the widened portion 641, the engagement operation between the leg portions 522, 532 of the hooked locking pins 52, 53 and the engagement grooves 632, 642 can be performed smoothly. And human error can be reduced.

The engaging groove 632 formed in the notch 63 is engaged with the hooked locking pin 52 erected on the end edge 16, and the engaging groove 642 formed in the hole 64 is the end edge 11. By engaging with the hooked locking pin 53 erected on the vehicle, displacement of the vehicle lower cover plate 2B in the vehicle left-right direction and vehicle vertical direction is suppressed.
Since the lower cover plate 2B for the vehicle has a small amount protruding upward from the lower surface opening receiving portion 1, there is an advantage that it is possible to easily avoid interference with various electric devices, air conditioners and the like mounted on the floor surface of the vehicle body 10. is there.

Nuts 31 that are bolted to the edge portions 11 and 16 of the lower surface opening receiving portion 1 are fixed to the first lid 21B and the fixing portion 251 of the second lid 25 of the lower cover plate 2B for the vehicle. A plurality of nuts 31 are arranged on the upper surfaces of the first lid 21B and the fixing portion 251 at positions facing each other in the vehicle front-rear direction. A base 253 through which the bolt 3 is inserted is fixed to the lower surface of the fixing portion 251.
Further, a laterally long hole 32 through which the bolt 3 is inserted is formed in the end edge portion 11 of the lower surface opening receiving portion 1. The horizontally long hole 32 is formed long in the vehicle front-rear direction. A longitudinally long hole 33 through which the bolt 3 is inserted is formed in the edge 16 of the lower surface opening receiving portion 1. The vertically long hole 33 is formed long in the vehicle left-right direction.

  The horizontally elongated hole 32 is formed in the same direction as the engagement groove 642 engaged with the hooked locking pin 53, and the vertical hole 33 is formed with the engagement groove 632 engaged with the hooked locking pin 52. It is formed with the same orientation. By forming them in the same direction, it is possible to absorb the positional deviations of the front and rear, left and right of the lower cover plate 2B for the vehicle, and to perform the bolt fastening reliably, thereby reducing human error.

  As shown in FIG. 9, the fixed portion 251 of the second lid body 25 is provided with a plunger pin 7 that has a locking claw 76 protruding outward from the vehicle and is urged outward by the elastic body 78. . In addition, a laterally long locking hole 17 into which the locking claw 76 of the plunger pin 7 is inserted is formed in the end edge portion 11 of the lower surface opening receiving portion 1.

  The locking claw 76 of the plunger pin 7 has a cylindrical shape, the outer diameter thereof is the same as the short diameter of the locking hole 17, and the height thereof is the same as the thickness of the end edge portion 11. At the base end portion of the locking claw 76, a stop portion 75 that abuts against the end edge portion 11 of the lower surface opening receiving portion 1 from the vehicle inner side is formed. A shaft portion 74 extends through the fixed portion 251 at the upper end of the stop portion 75, and a collar member 77 that houses the elastic body 78 is joined to the shaft portion 74. The elastic body 78 is a compression coil spring having a predetermined length. The collar member 77 is in sliding contact with a cylindrical guide portion 254 provided upright on the lower surface of the fixed portion 251. A drop stopper 73 for the plunger pin 7 is fastened to the upper end of the shaft portion 74.

  As shown in FIG. 9A, when the lower cover plate 2B for a vehicle is bolted to the lower surface opening receiving portion 1, the locking claw 76 of the plunger pin 7 is inserted into the locking hole 17 (engaged state). ), The elastic body 78 is compressed. As shown in FIG. 9 (b), when the bolt fastening is loosened, the vehicle lower cover plate 2B is pressed by the elastic body 78 and rises in the direction of the arrow R, but the engagement state of the plunger pin 7 is as follows. Retained. From this state, as shown in FIG. 9C, when the plunger pin 7 is pushed in the direction of arrow S by inserting a screwdriver or the like from the locking hole 17, the locking claw 76 escapes from the locking hole 17. . When the lower cover plate 2B for the vehicle is slid in the direction of the arrow S2, the engagement state between the hooked locking pins 52, 53 and the notch 63 and the hole 64 is released, and the lower cover plate 2B for the vehicle is released. Can be removed from the lower surface opening receiving portion 1.

  On the other hand, when the lower cover plate 2B for a vehicle is brought into contact with the lower surface opening receiving portion 1 from the inside of the vehicle and the hooked locking pins 52 and 53 are engaged with the notch 63 and the hole 64, FIG. As shown in b), the plunger pin 7 is pressed by the elastic body 78 and the locking claw 76 is automatically inserted into the locking hole 17, and the vehicle lower cover plate 2 can be attached to the lower surface opening receiving portion 1. it can.

As shown in FIG. 10 (a), the indicator pin 8 to be inserted into the viewing hole 18 formed in the end edge portion 11 of the lower surface opening receiving portion 1 is fixed to the fixing portion 251 of the second lid body 25. ing. The viewing hole 18 is formed adjacent to the locking hole 17. The indicator pin 8 includes a hemispherical head 81 and a columnar leg portion 82, the head portion 81 is fixed to the fixing portion 251, and the leg portion 82 is completely inserted into the peeping hole 18. When the vehicle lower cover plate 2 </ b> B is bolted to the lower surface opening receiving portion 1, the lower end of the leg portion 82 coincides with the lower end of the end edge portion 11. At this time, the indicator pin 8 can be clearly confirmed from the outside of the vehicle.
On the other hand, as shown in FIG. 10B, when the bolt fastening is loosened, the indicator pin 8 rises and becomes difficult to see from the peep hole 18. Therefore, when the bolt fastening of the lower cover plate 2B for the vehicle to the lower surface opening receiving portion 1 becomes insufficient due to artificial forgetting to tighten or vibration during running, etc., the bolt pin abnormality is detected by the indicator pin 8 it can.

<Effect>
As described above, according to the structure for preventing the vehicle lower cover plate 2B from falling off according to the present embodiment, the vehicle lower cover plate 2B is brought into contact with the lower surface opening receiving portions 1 and 1 of the vehicle body 10 from the inside of the vehicle. The engaging claw 76 of the plunger pin 7 is automatically inserted into the engaging hole 17 of the lower surface opening receiving portion 1 simply by engaging the hooked locking pins 52 and 53 with the notch 63 and the hole 64. Thus, the displacement of the lower cover plate 2B for the vehicle with respect to the lower surface opening receiving portion 1 can be suppressed.
Therefore, even if the subsequent bolt fastening of the lower cover plate 2B for the vehicle with respect to the lower surface opening receiving portions 1 and 1 becomes insufficient due to artificial forgetting to tighten or vibration during travel, the lower cover plate 2B for the vehicle The lower locking plate 2B for the vehicle can be prevented from falling off the lower surface opening receiving portions 1 and 1 of the vehicle body 10 by being restrained by the hooked locking pins 52 and 53 and the plunger pin 7.

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 first embodiment, the notch 61 is formed on the vehicle front side of the vehicle lower cover plate 2 and the hole 62 is formed on the vehicle rear side of the vehicle lower cover plate 2. The hole 62 may be formed on the vehicle front side of the vehicle lower cover plate 2, and the hole 62 may be formed on the vehicle front side of the vehicle lower cover plate 2. Moreover, in 2nd Embodiment, although the notch part 63 was formed in the vehicle rear side of the lower cover board 2B for vehicles, and the hole part 64 was formed in the vehicle front side of the lower cover board 2B for vehicles, the notch part 63 is formed. The hole 64 may be formed on the vehicle front side of the vehicle lower cover plate 2B, and the hole 64 may be formed on the vehicle rear side of the vehicle lower cover plate 2B.

DESCRIPTION OF SYMBOLS 1 Lower surface opening receiving part 2, 2B Lower cover board 3 for vehicles Bolts 4, 7 Plunger pin 8 Indicator pin 9 Lower surface opening part 10 Car body 11, 16 End edge part 12, 13 Base end reinforcement rib 17 Locking hole 18 Peeping hole 21 Lid 21B 1st lid 22, 22B Reinforcement rib 25 2nd lid 41, 76 Locking claw 45 Knob part 46, 78 Elastic body 51, 52, 53 Locking pin 61, 63 with flange Notch (covered) Engagement part)
62, 64 hole (engaged part)
232 Locking holes 511, 521, 531 Gutter part 512, 522, 532 Leg part 611, 631 Guide part 621, 641 Widened part

Claims (5)

A substantially rectangular lower cover plate for a vehicle is brought into contact with a lower surface opening receiving portion provided at a position facing the lower surface opening portion of the vehicle body from the inside of the vehicle, and a bolt is tightened from the outside of the vehicle to fasten the lower lower plate for the vehicle. Is a structure for preventing the lower cover plate for the vehicle from falling off and detachably fixed to the lower surface opening receiving portion,
The lower surface opening receiving portion is provided with at least a pair of hooked locking pins protruding toward the inside of the vehicle, and provided with a plunger pin having a locking claw protruding toward the inside of the vehicle and being urged toward the vehicle by the elastic body. Was it,
The vehicle lower cover plate is formed with an engaged portion to be engaged with each hooked locking pin and a locking hole into which a locking claw of the plunger pin is inserted. Prevents the bottom cover plate from falling off. The structure for preventing the vehicle bottom cover plate from falling off according to claim 1,
The plunger pin is provided with a knob portion protruding from the lower surface opening receiving portion toward the outside of the vehicle. A substantially rectangular lower cover plate for a vehicle is brought into contact with a lower surface opening receiving portion provided at a position facing the lower surface opening portion of the vehicle body from the inside of the vehicle, and a bolt is tightened from the outside of the vehicle to fasten the lower lower plate for the vehicle. Is a structure for preventing the lower cover plate for the vehicle from falling off and detachably fixed to the lower surface opening receiving portion,
The lower surface opening receiving portion is provided with at least a pair of hooked locking pins protruding toward the vehicle interior, and formed with a locking hole,
The vehicle lower cover plate has an engaging portion that engages with each hooked locking pin, and has an engaging claw that is inserted into the engaging hole of the lower surface opening receiving portion. A structure for preventing a vehicle bottom cover plate from falling off, which is provided with a plunger pin that is urged to the outside of the vehicle by the pressing force of the vehicle. In the structure for preventing the vehicle lower cover plate from falling off according to claim 3,
A peep hole is formed in the lower face opening receiving portion adjacent to the locking hole, and the plow hole is formed in the lower cover plate for the vehicle when the lower cover plate for the vehicle is fixed to the lower face opening receiving portion. A structure for preventing the bottom cover plate for a vehicle from falling off, characterized in that an indicator pin visible from the side is provided. In the dropout prevention structure of the lower cover board for vehicles described in any one of Claims 1 thru | or 4,
The engaged portion includes a notch portion and a hole portion, and the notch portion includes a guide portion having a distal end widened in a substantially V shape, and the hole portion includes the hooked engagement member. A structure for preventing a vehicle bottom cover plate from falling off, comprising a widened portion through which a collar portion of the stop pin can pass.

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