JP7141186B2 - Ceiling panel mounting structure for railway vehicle and railway vehicle - Google Patents

Description

The present invention relates to railcar ceiling panel mounting for attaching a ceiling panel to a roof structure by inserting and fastening fastening members supported by the roof structure of the railcar into a plurality of mounting holes provided in the ceiling panel. It relates to structures and rail vehicles.

Conventionally, there are ceiling panel mounting structures for railway vehicles that use fastening members to mount a ceiling panel to a roof structure of a railway vehicle, such as those described in Patent Document 1 and Patent Document 2, for example. In Patent Documents 1 and 2, a plurality of round holes are formed in the ceiling panel, and mounting screws held in hanging grooves of the roof structure are inserted into the respective round holes and fastened to the nuts, whereby the ceiling panel is mounted. to the roof structure.

JP 2015-093562 A JP-A-2000-108899

However, the conventional railcar ceiling panel mounting structure has the following problems. That is, in the conventional railcar ceiling panel mounting structure, when mounting the ceiling panel to the roof structure, the mounting screws must be inserted into the round holes of the ceiling panel while being aligned with each other, which makes the panel mounting work troublesome. was hanging. In addition, for example, since the position of the mounting screw is uniquely determined with respect to the round hole, for example, if there is a missing part in the position corresponding to the round hole of the hanging groove, the mounting screw can be aligned with the round hole. There were things I couldn't do. On the other hand, it is conceivable to prepare a plurality of types of panels with different positions of the round holes, but the more types of panels, the higher the cost.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and provides a railroad vehicle ceiling panel mounting structure and a railroad vehicle that can improve panel mountability while suppressing an increase in the types of panels. intended to

One aspect of the present invention has the following configuration.
(1) A railway vehicle ceiling panel that attaches the ceiling panel to the roof structure by inserting fastening members that are supported by the roof structure of the railway vehicle into a plurality of mounting holes provided in the ceiling panel and fastening them. In the mounting structure, each of the plurality of mounting holes has an insertion groove that opens to an end of the ceiling panel, and a long groove that is formed in a direction perpendicular to the insertion groove and communicates with the insertion groove, characterized by

In the railway vehicle ceiling panel mounting structure having the above configuration, the ceiling panel is lifted, the fastening members are inserted into the respective insertion grooves, and the ceiling panel is slid along the long grooves to insert the fastening members into the respective mounting holes of the ceiling panel. can be inserted. After that, each fastening member is fastened and the ceiling panel is attached to the roof structure. At this time, for example, if there is a missing part in the position of the fastening member, the fastening member is fastened after shifting the position of the fastening member within the range of the long groove so as to avoid the missing part. Therefore, according to the railway vehicle ceiling panel structure having the above configuration, it is easy to fasten by inserting the fastening members into the plurality of mounting holes, respectively, and the fastening positions of the fastening members can be freely adjusted within the range of the long groove. Panel mountability can be improved while suppressing an increase in the number of types.

(2) In the railway vehicle ceiling panel mounting structure described in (1), the mounting hole has a notch formed at both ends of the long groove so as to be recessed toward the roof structure. .

In the railway vehicle ceiling panel mounting structure having the above configuration, after the fastening member inserted into the long groove is engaged with one of the notches, the ceiling panel can be moved and positioned integrally with the fastening member. can be easily attached to the roof structure.

(3) In the railway vehicle ceiling panel mounting structure described in (1) or (2), the ceiling panel has a plurality of panel parts arranged side by side in the railway vehicle front-rear direction, and movably holding the fastening member, the plurality of panel portions are provided with the mounting holes, and the long groove is provided along the longitudinal direction of the railroad vehicle. characterized by

In the railway vehicle ceiling panel mounting structure having the above configuration, the fastening members are inserted into the long grooves of the mounting holes while each panel portion is slid in the longitudinal direction of the railway vehicle, and each panel portion is moved along the suspension groove. are arranged side by side in the longitudinal direction of the railroad vehicle. Therefore, according to the railway vehicle ceiling panel mounting structure having the above configuration, since the direction in which the fastening member is engaged with the mounting hole of each panel portion is the same as the installation direction of the plurality of panel portions, each panel portion can be positioned and fixed. It is easy to install, and panel mountability can be improved.

(4) A railway vehicle comprising the railway vehicle ceiling panel mounting structure according to any one of (1) to (3).

ADVANTAGE OF THE INVENTION According to this invention, the railroad vehicle ceiling panel attachment structure and railroad vehicle which can improve the mountability of a panel can be implement|achieved, suppressing the type of panel increasing.

1 is a cross-sectional view of a railway vehicle according to an embodiment of the present invention; FIG. FIG. 2 is an enlarged view of part A in FIG. 1; FIG. 3 is an enlarged view of a portion B in FIG. 2 and an enlarged view of a shielding member and an attachment portion of a lighting fixture; 4 is an enlarged view of an attachment portion of the shielding member; FIG. FIG. 4 is a plan view of the ceiling panel; FIG. 6 is an enlarged view of a C portion in FIG. 5; Fig. 2 is a plan view of the central ceiling panel section; It is an enlarged view of a mounting hole.

A railroad vehicle ceiling panel mounting structure and a railroad vehicle according to the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a railway vehicle 1 according to an embodiment of the invention. FIG. 2 is an enlarged view of part A in FIG. FIG. 3 is an enlarged view of the B portion in FIG. FIG. 4 is an enlarged view of the mounting portion of the second shielding member 5. As shown in FIG. FIG. 5 is a plan view of the ceiling panel 3. FIG. FIG. 6 is an enlarged view of part C in FIG. 7 is a plan view of the central ceiling panel section 31. FIG. FIG. 8 is an enlarged view of the mounting hole 312. As shown in FIG. 2, 3, and 4 omit hatching to make the drawings easier to see.

As shown in FIG. 1 , a railway vehicle 1 has a structure 2 to which a ceiling panel 3 is attached. The structure 2 includes a roof structure 21 , a pair of side structures 22 and 23 and a floor structure 24 . The roof structure 21, the pair of side structures 22 and 23, and the floor structure 24 have a double-skin structure and are formed by hollow extrusion molding.

As shown in FIGS. 1 and 2, the roof structure 21 and the pair of side structures 22 and 23 are provided with structure-side suspension grooves 211, 212, 221 and 231 for attaching fittings during hollow extrusion. They are integrally formed along the front-rear direction X (the front-rear direction in the figure, hereinafter also referred to as the "front-rear direction X").

As shown in FIG. 1, the ceiling panel 3 is divided in the vehicle width direction Y (horizontal direction in the figure). That is, the ceiling panel 3 includes a central ceiling panel portion 31 arranged in the center in the vehicle width direction Y, and one end side of the central ceiling panel portion 31 in the vehicle width direction Y (the left side in the figure, the side structure 22 side). and a second side ceiling panel portion 33 arranged on the other end side of the center ceiling panel portion 31 in the vehicle width direction Y (on the right side in the figure, on the side of the side structure 23).

As shown in FIGS. 1 and 2, the central ceiling panel portion 31 has a cross-sectional shape when cut in the vehicle width direction Y, in which the central portion gently protrudes toward the floor side, and at both ends in the vehicle width direction Y The located ends are attached to the roof structure 21 via the first shielding member 4 and the second shielding member 5, respectively. The first side ceiling panel part 32 has an L-shape, one end (the right end in the figure) is attached to the roof structure 21 via the first shielding member 4, and the other end (the left end in the figure). is attached to the structure-side hanging groove 221 of the side structure 22 . The second side ceiling panel portion 33 is L-shaped, one end (the left end in the drawing) is attached to the roof structure 21 via the second shielding member 5, and the other end (the right end in the drawing) is attached to the roof structure 21 . is attached to the structure-side hanging groove 231 of the side structure 23 . The first lighting fixture 6 and the second lighting fixture 7 are arranged directly below the first shielding member 4 and the second shielding member 5, respectively.

As shown in FIG. 5, the ceiling panel 3 includes central ceiling panel portions 31A to 31J, first side ceiling panel portions 32A to 32H, and second side ceiling panel portions 33A to 33H, which are arranged in the front-rear direction X. It is configured by arranging. The central ceiling panel sections 31A-31J are examples of a plurality of panel sections. The first shielding members 4A to 4J shield between the central ceiling panel portions 31A to 31J and the first side ceiling panel portions 32A to 32H. Second shielding members 5A to 5J shield between the central ceiling panel portions 31A to 31J and the second side ceiling panel portions 33A to 33H. The first lighting fixtures 6A to 6J and the second lighting fixtures 7A to 7J are arranged on the guest room side (floor side) of the first shielding members 4A to 4J and the second shielding members 5A to 5J.

In FIG. 5, alphabetic suffixes are attached to the reference numerals to distinguish members having the same shape, but suffixes are appropriately omitted when there is no particular need to distinguish them in other descriptions and drawings. In addition, the first side ceiling panel portions 32A to 32H, the first shielding members 4A to 4J, and the first lighting fixtures 6A to 6J are the second side ceiling panel portions 33A to 33H, the second shielding members 5A to 5J, and the second lighting. Since they are configured in the same manner as the fixtures 7A to 7J, the second side ceiling panel sections 33A to 33H, the second shielding members 5A to 5J, and the second lighting fixtures 7A to 7J will be mainly described below.

The central ceiling panel portion 31, the second side ceiling panel portion 33, and the second shielding member 5 have different lengths L1, L2, and L3 in the front-rear direction X. As shown in FIG. The central ceiling panel part 31 is set to have a length L1 so that it can be arranged with good appearance. On the other hand, the length L2 of the second side ceiling panel portion 33 is set according to the position of the window, and the length L2 is longer than the length L1. The length L3 of the second shielding member 5 is set according to the mounting position of the second lighting device 7, and the length L3 is longer than the length L1. The central ceiling panel portion 31, the second side ceiling panel portion 33, and the second shielding member 5 are each provided with four mounting positions. Pitch is different. The length L4 of the second lighting fixture 7 in the front-rear direction X is the same as the length L3 of the second shielding member 5 .

The second shielding member 5 shown in FIGS. 3 and 4 is formed by extruding metal, and has an elongated plate shape with both ends in the vehicle width direction Y bent toward the floor (lower side in the drawings). The second shield member 5 is attached to the roof structure 21 near the center in the vehicle width direction Y, and has a central ceiling panel portion 31 and a second side ceiling panel portion 33 attached to both ends in the vehicle width direction Y, respectively.

The width of the second shielding member 5 in the vehicle width direction Y is between the central ceiling panel portion 31 and the second side ceiling panel portion 33 so that the gap S1 formed between the central ceiling panel portion 31 and the second side ceiling panel portion 33 can be shielded. It is made larger than the installation interval with the side ceiling panel portion 33 .

As shown in FIG. 3 , the second shielding member 5 has a through hole 53 formed near the center in the vehicle width direction Y, and a first mounting screw 55 held in the structure-side suspension groove 212 is inserted through the through hole 53 . The second lighting fixture 7 is attached to the roof structure 21 by fastening it to the first nut 65 on the second lighting fixture 7 side.

As shown in FIG. 4, the second shielding member 5 has a mounting hole 54 smaller than the through hole 53 near the center in the vehicle width direction Y, and a fourth mounting screw 58 held in the suspension groove 212 on the structure side. is inserted into the mounting hole 54 and fastened to the fourth nut 68 to be mounted on the roof structure 21 . The fourth mounting screw 58 is shorter than the first mounting screw 55 because it only mounts the second shielding member 5 .

As shown in FIG. 6, the second shielding member 5 has through holes 53 formed at three locations in the front-rear direction X at a uniform pitch P4, and mounting holes 54 at four locations in the front-rear direction X at a pitch P3x different from the pitch P4. , P3y.

The second shielding member 5 is provided with a first panel hanging groove 51 at one end in the vehicle width direction Y (on the side of the central ceiling panel portion 31, left side in the figure). The first panel hanging groove 51 is an example of a hanging groove. Further, the second shielding member 5 is provided with a second panel suspension groove 52 at the other end in the vehicle width direction Y (on the side of the second side ceiling panel portion 33, on the right side in the figure). The first panel suspension groove 51 and the second panel suspension groove 52 are provided along the front-rear direction X and parallel to the structure-side suspension groove 212 of the roof structure 21 . The head of the second mounting screw 56 is inserted into the first panel hanging groove 51 and is movably held in the first panel hanging groove 51 . The head of the third mounting screw 57 is inserted into the second panel hanging groove 52 and is movably held in the second panel hanging groove 52 .

As shown in FIG. 7 , the central ceiling panel section 31 includes a substantially rectangular panel body 311 . The panel main body 311 is provided with a pair of standing portions 313 by bending both ends in the vehicle width direction Y (horizontal direction in the drawing) toward the roof structure 21 . The panel main body 311 has a plurality of frame members 317 arranged parallel to the vehicle width direction Y on the back side (the side located on the roof structure 21 side), and a reinforcing member 316 is fixed to the back side of the standing portion 313 with screws or the like. It is reinforced by

The central ceiling panel portion 31 has four mounting holes 312 formed at each end portion in the vehicle width direction Y. As shown in FIG. The mounting holes 312 are provided in a strong reinforcing member 316 . The mounting holes 312 are formed at substantially uniform pitches P1x and P1y in the front-rear direction X (vertical direction in the figure). The central ceiling panel portion 31 is attached to the second shielding member 5 by inserting the second attachment screws 56 through the attachment holes 312 and tightening the second nuts 66 . The second mounting screw 56 and the second nut 66 are examples of fastening members.

Here, as shown in FIG. 8, each of the mounting holes 312 is provided with an insertion groove 3121 and a long groove 3122 in a T shape. The insertion groove 3121 is formed in the height direction Z (vertical direction in the drawing) from the edge 314 located on the roof structure 21 side (upper side in the drawing) of the central ceiling panel portion 31, and is open on the roof structure 21 side. . The long groove 3122 is formed along the front-rear direction X (horizontal direction in the drawing), and the insertion groove 3121 communicates with the central position in the front-rear direction X. As shown in FIG. Therefore, after the second mounting screw 56 is inserted into the mounting hole 312 , the central ceiling panel section 31 can be moved in the front-rear direction X with respect to the second mounting screw 56 . Notch portions 3123 and 3124 are formed at both ends of the long groove 3122 so as to be recessed toward the roof structure 21 side, so that the second mounting screw 56 can be positioned with respect to the central ceiling panel portion 31. .

On the other hand, as shown in FIGS. 3 and 4, the second side ceiling panel portion 33 has a mounting metal 336 fixed to the end portion of the panel body 331 located on the roof structure 21 side with screws or the like. The mounting bracket 336 is a metal plate having an L-shaped cross section and having a length approximately equal to the length L2 of the second side ceiling panel portion 33 . Four mounting holes 332 are formed in the mounting bracket 336 in the front-rear direction X. As shown in FIG. The second side ceiling panel portion 33 is attached to the second shielding member 5 by inserting the third mounting screws 57 held in the second panel hanging grooves 52 into the mounting holes 332 and tightening the third nuts 67 . installed.

As shown in FIG. 3 , the second lighting fixture 7 is obtained by attaching a panel-shaped lighting cover 71 having a length L4 that is the same as the length L3 of the second shielding member 5 to a lighting fixture 72 . The second lighting fixture 7 is provided with fixing portions 73 at the same pitch as the through holes 53 of the second shielding member 5 . The second lighting fixture 7 is attached to the roof structure 21 by inserting the first attachment screws 55 inserted through the through holes 53 into the fixing portions 73 and fastening them to the first nuts 65 .

The second lighting fixture 7 has a gap S2 formed between the lighting cover 71 and the central ceiling panel portion 31 along the railroad vehicle front-rear direction X. As shown in FIG. Further, the second lighting fixture 7 has a gap S3 formed between the lighting cover 71 and the second side ceiling panel portion 33 . The second lighting fixture 7 irradiates the center ceiling panel portion 31 and the second side ceiling panel portion 33 with the light of the lamp 72 through the gaps S2 and S3, and illuminates the passenger compartment with the reflected light.

Next, a procedure for mounting the ceiling panel 3 will be described.

First, the worker lifts the second shielding member 5 and attaches the second shielding member 5 to the roof structure 21 . That is, the operator inserts the first mounting screw 55 and the fourth mounting screw 58 held in the structure-side suspension groove 212 of the roof structure 21 through the through hole 53 and the mounting hole 54 of the second shielding member 5, respectively. Then, by fastening the fourth mounting screw 58 to the fourth nut 68 , the second shielding member 5 is mounted to the roof structure 21 . The first shielding member 4 is also attached to the roof structure 21 in the same manner. The second shielding member 5 may be attached after the first shielding member 4 is attached.

Here, the first mounting screw 55 and the fourth mounting screw 58 are movably held in the suspension groove 212 on the structure side. Therefore, for example, the first mounting screw 55 and the fourth mounting screw 58 are respectively inserted into the through hole 53 and the mounting hole 54 of the second shielding member 5A, and the fourth mounting screw 58 is loosely tightened to the fourth nut 68. The second shielding members 5A and 5B can be easily arranged side by side in the front-rear direction X and positioned. After completing the temporary attachment of the second shielding members 5A to 5J as described above, the fourth attachment screws 58 are fully tightened to the fourth nuts 68, respectively. Thereby, the second shielding members 5A can be attached to the roof structure 21 in a state of being arranged in the front-rear direction X. As shown in FIG.

Then, the worker lifts the central ceiling panel portion 31 and attaches the central ceiling panel portion 31 to the roof structure 21 via the first shielding member 4 and the second shielding member 5 . That is, the operator inserts the second mounting screws 56 held in the first panel hanging grooves 51 of the second shielding member 5 into the mounting holes 312 of the central ceiling panel portion 31 and fastens them to the second nuts 66 . By doing so, one end of the central ceiling panel portion 31 is attached to the roof structure 21 via the second shielding member 5 . The other end of the central ceiling panel portion 31 is also attached to the roof structure 21 via the first shielding member 4 in the same manner.

Here, the mounting holes 312 of the central ceiling panel portion 31 are each T-shaped. For this reason, the operator must insert the second mounting screw 56 held in the first panel hanging groove 51 provided in the first shielding member 4 and the second shielding member 5 into the mounting hole provided in the central ceiling panel portion 31 . 312, and slide the central ceiling panel portion 31 in the longitudinal direction X of the railway vehicle, the central ceiling panel portion 31 is inserted into the roof structure 21 via the first shielding member 4 and the second shielding member 5. can be temporarily attached to In other words, the central ceiling panel portion 31 can be temporarily attached to the roof structure 21 without inserting the attachment screws into the round holes one by one. Similarly, the next center ceiling panel portion 31 is temporarily attached to the roof structure 21 .

At this time, the central ceiling panel portion 31 is connected to the first shielding member 4 and the second shielding member via the second mounting screw 56 by engaging the second mounting screw 56 with either of the notches 3123 and 3124 . 5 is slidably attached temporarily. Therefore, for example, when temporarily attaching the central ceiling panel portion 31B after temporarily attaching the central ceiling panel portion 31A, the central ceiling panel portion 31B is attached to the first panel hanging groove 51 together with the second mounting screw 56. The central ceiling panel portions 31A and 31B can be easily arranged side by side by sliding them toward the central ceiling panel portion 31A. Since the cutouts 3123 and 3124 are recessed toward the roof structure 21 side, they are easily engaged with the second mounting screw 56 .

After temporary attachment of the central ceiling panel portions 31A to 31J is completed, the worker lifts the second side ceiling panel portion 33 and attaches the second side ceiling panel portion 33 to the roof structure 21 and the side structures 23. That is, the operator inserts the third mounting screws 57 held in the second panel hanging grooves 52 of the second shielding member 5 into the mounting holes 332 of the second side ceiling panel portion 33 , respectively, and attaches the third nuts 67 . One end of the second side ceiling panel portion 33 is temporarily attached to the roof structure 21 via the second shielding member 5 by loosely fastening the second side ceiling panel portion 33 to the roof structure 21 . Also, the worker temporarily attaches the other end of the second side ceiling panel portion 33 to the structure-side suspension groove 231 of the side structure 23 . Similarly, the worker temporarily attaches the first side ceiling panel portion 32 to the roof structure 21 and the side structure 22 . The first side ceiling panel portions 32A to 32H and the second side ceiling panel portions 33A to 33H are arranged side by side in the front-rear direction X, respectively.

Note that the mounting order of the central ceiling panel portion 31, the first side ceiling panel portion 32, and the second side ceiling panel portion 33 may be different.

Here, as shown in FIGS. 5 to 7, the length L1 of the central ceiling panel portion 31 in the railway vehicle front-rear direction X is equal to the length L1 of the first side ceiling panel portion 32 and the second side ceiling panel portion 33 in the railway vehicle front-rear direction. Unlike the length L2 of X, the lengths L3 and L4 of the first shielding member 4, the second shielding member 5, the first lighting fixture 6, and the second lighting fixture 7 in the railroad vehicle longitudinal direction X are also different. Furthermore, the mounting position pitches P1x, P1y, P3x, P3y, and P4 are different. Therefore, if these are arranged in order in the front-rear direction X and temporarily attached, the attachment position will be shifted.

However, in the second shielding member 5, the fourth mounting screws 58 movably held in the structure-side suspension grooves 212 of the roof structure 21 are inserted into the mounting holes 54, respectively, and the fourth mounting screws 58 are inserted into the fourth nuts 68. It is attached to the roof structure 21 by being fastened to. The central ceiling panel portion 31 and the second side ceiling panel portion 33 are movably held in the first panel hanging groove 51 and the second panel hanging groove 52 of the second shielding member 5 by second mounting screws 56 . and the third mounting screw 57 are inserted into the mounting holes 312, respectively, and the second mounting screw 56 and the third mounting screw 57 are respectively fastened to the second nut 66 and the third nut 67, so that the second shielding member 5 It is attached. Therefore, even if the lengths L1, L2, and L3 and the pitches P1x, P1y, P3x, and P3y of the mounting positions are different between the central ceiling panel portion 31, the second side ceiling panel portion 33, and the second shielding member 5, the second mounting portion is The positions of the screw 56 , the third mounting screw 57 and the fourth mounting screw 58 can be arbitrarily adjusted along each of the hanging grooves 51 , 52 , 212 . Therefore, the worker, in a state in which the entire panel (central ceiling panel portions 31A to 31J, first side ceiling panel portions 32A to 32H, second side ceiling panel portions 33A to 33H) is temporarily attached, each panel (central ceiling The panel sections 31A to 31J, the first side ceiling panel sections 32A to 32H, and the second side ceiling panel sections 33A to 33H) can be moved in the front-rear direction X (adjustment direction) to adjust the gap between the panels. As a result, it is possible to deal with variations in cabin length, which have relatively large manufacturing errors. After the position adjustment of each panel is completed, the second mounting screw 56 and the third mounting screw 57 are fully tightened to the second nut 66 and the third nut 67, respectively.

If the first panel hanging groove 51 has a missing portion and the second mounting screw 56 is disposed in the missing portion, the position of the second mounting screw 56 is positioned within the range of the long groove 3122. Then, the second mounting screw 56 is fully tightened to the second nut 66. Therefore, the center ceiling panel portions 31A to 31J can fasten the second mounting screws 56 to the second nuts 66 without being restricted by the pitches P1x and P1y of the mounting holes 312. FIG.

After that, the worker lifts the second lighting fixture 7 and attaches the second lighting fixture 7 to the roof structure 21 . That is, the first mounting screw 55 is inserted into the through hole 53 of the previously mounted second shielding member 5 and protrudes downward. Accordingly, the operator attaches the second lighting fixture 7 to the roof structure 21 by inserting the first mounting screws 55 through the fixing portions 73 of the second lighting fixture 7 and fastening them to the first nuts 65 . The first lighting fixture 6 is also attached to the roof structure 21 in the same manner.

As described above, the present embodiment is a railway vehicle ceiling panel mounting structure for mounting the ceiling panel 3 on the roof structure 21 of the railway vehicle. 3 is divided into a central ceiling panel portion 31 and a second side ceiling panel portion 33, the central ceiling panel portion 31 has mounting holes 312 formed at a predetermined pitch, and the second side ceiling panel portion 33 has mounting holes 332 formed at a predetermined pitch, a fourth mounting screw 58 movably held in the structure-side suspension groove 212, and a plate-shaped mounting plate mounted to the roof structure 21 by the fourth mounting screw 58. The second shielding member 5 in which the first panel suspension groove 51 and the second panel suspension groove 52 are provided in the same direction as the structure side suspension groove 212, and the first panel suspension a second mounting screw 56 that is movably held in the groove 51, inserted through the mounting hole 312 and fastened to the second nut 66 to mount the central ceiling panel portion 31 to the second shielding member 5; a third mounting screw 57 which is movably held in the hanging groove 52, is inserted through the mounting hole 332, and is fastened to the third nut 67 to mount the second side ceiling panel section 33 to the second shielding member 5; and a gap S1 between the central ceiling panel portion 31 and the second side ceiling panel portion 33 is shielded by the second shielding member 5 .

In such a railway vehicle ceiling panel attachment structure, the central ceiling panel portion 31 and the second side ceiling panel portion 33 are attached to the roof structure 21 via the second shielding member 5 . Since the second shielding member 5 is attached to the structure-side suspension groove 212 of the roof structure 21 via the fourth mounting screw 58, the mounting position with respect to the roof structure 21 can be freely adjusted. Moreover, the central ceiling panel portion 31 is attached to the first panel hanging groove 51 of the second shielding member 5 via the second mounting screw 56, and the second side ceiling panel portion 33 is mounted via the third mounting screw 57. Since the mounting positions of the central ceiling panel portion 31 and the second side ceiling panel portion 33 can be freely adjusted with respect to the second shielding member 5 . In this way, even if the central ceiling panel portion 31 and the second side ceiling panel portion 33 are attached to the roof structure 21 via the second shielding member 5, the attachment positions with respect to the roof structure 21 can be freely adjusted. , the mountability can be improved. Further, since the plate-shaped second shielding member 5 shields the gap S1 formed between the central ceiling panel portion 31 and the second side ceiling panel portion 33, external noise does not leak into the passenger compartment. Therefore, according to the railway vehicle ceiling panel mounting structure of this embodiment, even when the divided ceiling panel 3 is mounted on the roof structure 21, the panel mountability and sound insulation can be improved.

In addition, in this embodiment, the structure-side suspension groove 212, the first panel suspension groove 51, and the second panel suspension groove 52 are provided along the railroad vehicle front-rear direction X, and the central ceiling panel portion 31 is It is characterized in that they are arranged side by side in the railroad vehicle front-rear direction X, and that the second side ceiling panel portions 33 are arranged side by side in the railroad vehicle front-rear direction X.

According to such a railroad vehicle ceiling panel mounting structure, the central ceiling panel portion 31 and the second side ceiling panel portion 33 are arranged side by side in the longitudinal direction X of the railroad vehicle. In the second shield member 5 , the first panel hanging groove 51 and the second panel hanging groove 52 are formed along the front-rear direction X in the same manner as the structure-side hanging groove 212 of the roof structure 21 . Therefore, when the central ceiling panel portion 31 and the second side ceiling panel portion 33 are arranged close together in the front-rear direction X, the second mounting screws are attached along the first panel hanging groove 51 and the second panel hanging groove 52 . 56 and the third mounting screw 57 can be freely moved to match the positions of the mounting holes 312 and 332, and the second mounting screw 56 and the third mounting screw 57 can be fastened to the second nut 66 and the third nut 67, respectively. can. Therefore, according to the railway vehicle ceiling panel mounting structure of the present embodiment, even when the central ceiling panel portion 31 and the second side ceiling panel portion 33 are arranged side by side in the front-rear direction X, the mounting positions can be freely adjusted. and panel mountability can be improved.

In addition, this embodiment has the first mounting screw 55 movably held in the structure-side hanging groove 212, and the second lighting fixture arranged between the central ceiling panel portion 31 and the second-side ceiling panel portion 33. 7, and the first mounting screw 55 is inserted through the second shielding member 5 and fastened to the first nut 65 on the second lighting fixture 7 side.

In such a railway vehicle ceiling panel mounting structure, the first mounting screw 55 is inserted through the second shielding member 5 and fastened to the first nut 65 on the side of the second lighting fixture 7, whereby the second shielding member 5 is mounted. Since the second lighting fixture 7 is attached to the roof structure 21 directly below, the second lighting fixture 7 can be installed on the ceiling panel 3 without impairing sound insulation.

Since the railway vehicle 1 having the above railway vehicle ceiling panel mounting structure has a high sound insulation property, passengers can comfortably spend time in the cabin. Moreover, since the mountability of the ceiling panel 3 is improved, the time required for the assembly work of the railway vehicle 1 can be shortened.

Further, in this embodiment, the second mounting screws 56 supported by the roof structure 21 of the railway vehicle 1 are respectively inserted into the plurality of mounting holes 312 provided in the ceiling panel 3 and fastened to the second nuts 66. , in the railway vehicle ceiling panel mounting structure for mounting the ceiling panel 3 to the roof structure 21, the plurality of mounting holes 312 are respectively provided with insertion grooves 3121 opening at the ends of the ceiling panel 3 (central ceiling panel portion 31) and insertion It is characterized by having a long groove 3122 formed in a direction perpendicular to the groove 3121 and communicating with the insertion groove 3121 .

In this railway vehicle ceiling panel mounting structure, the central ceiling panel portion 31 is lifted, the second mounting screws 56 are inserted into the insertion grooves 3121, and the central ceiling panel portion 31 is slid along the long grooves 3122. , the second mounting screw 56 can be inserted into each mounting hole 312 of the central ceiling panel portion 31 . After that, each second mounting screw 56 is tightened to the second nut 66 to mount the central ceiling panel section 31 to the roof structure 21 . At this time, for example, if there is a missing portion at the position of the second mounting screw 56, the position of the second mounting screw 56 is shifted within the range of the long groove 3122 so as to avoid the missing portion, and then the second mounting screw is mounted. Screw 56 is tightened to second nut 66 . Therefore, according to the railway vehicle ceiling panel structure of this embodiment, the second mounting screws 56 are easily inserted into the plurality of mounting holes 312 and fastened to the second nuts 66 . Since the fastening position to be fastened to the nut 66 can be freely adjusted within the range of the long groove 3122, it is possible to improve panel mountability while suppressing an increase in the types of panels.

In addition, this embodiment is characterized in that the mounting hole 312 has notches 3123 and 3124 that are recessed toward the roof structure 21 at both ends of the long groove 3122 .

In such a railway vehicle ceiling panel mounting structure, after the second mounting screw 56 inserted into the long groove 3122 is engaged with one of the notches 3123 and 3124, the central ceiling panel portion 31 is engaged with the second mounting screw 56. Since it can be moved integrally and positioned, the central ceiling panel part 31 can be easily attached to the roof structure 21.例文帳に追加

Further, in this embodiment, the ceiling panel 3 has a plurality of central ceiling panel portions 31 arranged side by side in the front-rear direction X, the first panel suspension groove 51 is provided along the front-rear direction X, and the second mounting screw 56 is movably held, mounting holes 312 are provided in a plurality of central ceiling panel portions 31 respectively, and long grooves 3122 are provided along the front-rear direction X.

In such a railway vehicle ceiling panel mounting structure, the second mounting screws 56 are inserted into the long grooves 3122 of the mounting holes 312 while sliding the central ceiling panel portions 31 in the front-rear direction X, and further, each central ceiling panel The parts 31 are arranged side by side in the front-rear direction X by moving the parts 31 along the hanging grooves 51 for the first panel. Therefore, according to the railway vehicle ceiling panel mounting structure of this embodiment, the direction in which the second mounting screw 56 can be moved along the mounting hole 312 of each central ceiling panel portion 31 and the direction in which the plurality of central ceiling panel portions 31 Since the adjustment direction is the same (the front-rear direction X), each central ceiling panel portion 31 can be easily positioned and fixed, and the panel mountability can be improved.

The railway vehicle 1 having the railway vehicle ceiling panel mounting structure described above can reduce the types of panels and improve the panel mountability, so that the time required for the assembly work of the railway vehicle 1 can be shortened.

It should be noted that the present invention is not limited to the above embodiments, and can be applied in various ways.

For example, in the above embodiment, the ceiling panel 3 is divided into three parts in the vehicle width direction Y, but the ceiling panel 3 may be divided in the vehicle width direction Y into two parts or four parts or more.

For example, the central ceiling panel portion 31, the first side ceiling panel portion 32, and the second side ceiling panel portion 33 may be arranged side by side in the front-rear direction X with the same length in the front-rear direction X. In this case, the pitch of the mounting holes 312, 332 of the panel portions 31, 32, 33 may be different.

For example, the first lighting fixture 6 and the second lighting fixture 7 may not form a gap between the lighting cover 71 and the panel portions 31 , 32 , 33 .

For example, the illumination cover 71 and the second shielding member 5 may have different lengths in the front-rear direction X. As shown in FIG. However, by making the lighting cover 71 and the second shielding member 5 have the same length, it becomes easier to manage the mounting positions of the second lighting fixture 7 and the second shielding member 5 .

For example, the space between the first mounting screw 55 and the through hole 53, the space between the fourth mounting screw 58 and the mounting hole 54, and the space between the second mounting screw 56 and the mounting hole 312 Also, the gap between the third mounting screw 57 and the mounting hole 332, which communicates between the space on the roof structure 21 side of the ceiling panel 3 and the space on the passenger compartment side, is closed with a soundproof material to improve sound insulation. good too.

For example, in the above embodiment, the mounting hole 312 of the central ceiling panel section 31 is T-shaped with the insertion groove 3121 and the long groove 3122, but the mounting hole 332 of the second side ceiling panel section 33 may be T-shaped. . Further, the second side ceiling panel portion 33 may have a T-shaped mounting hole through which the fastening member held in the structure side hanging groove 231 is inserted.

For example, in the above embodiment, the ceiling panel 3 (the central ceiling panel portion 31, the first side ceiling panel portion 32, and the second side ceiling panel portion 33) is attached to the roof structure 21 via the first and second shielding members 4 and 5. Although attached, the ceiling panel 3 (the central ceiling panel portion 31, the first side ceiling panel portion 32, and the second side ceiling panel portion 33) may be attached to the hanging grooves provided in the roof structure 21 via attachment screws.

For example, in the above embodiment, the insertion groove 3121 is connected to the center of the long groove 3122 so that the central ceiling panel portion 31 can be attached even if the central ceiling panel portion 31 is turned upside down. 3121 may be connected to long groove 3122 .

For example, the mounting hole 312 may be configured with only the insertion groove 3121 and the long groove 3122 without the notches 3123 and 3124 .

The length L3 of the second shielding member 5 may be the same as the length L1 of the central ceiling panel portion 31 or shorter than the length L1.

1 Railway vehicle 3 Ceiling panel 31 Central ceiling panel portion 51 First panel suspension groove 56 Second mounting screw 312 Mounting hole 3121 Insertion groove 3122 Long groove 3123 Notch 3124 Notch X Railway vehicle longitudinal direction

Claims (4)

A railway vehicle ceiling panel mounting structure for mounting the ceiling panel to the roof structure by inserting and fastening fastening members supported by the roof structure of the railway vehicle into a plurality of mounting holes provided in the ceiling panel. ,
Having a hanging groove that movably holds the fastening member;
each of the plurality of mounting holes has an insertion groove that opens to an end of the ceiling panel and a long groove that is formed in a direction orthogonal to the insertion groove and communicates with the insertion groove;
The long groove is formed in the same direction as the hanging groove,
A railroad vehicle ceiling panel mounting structure characterized by: A railway vehicle ceiling panel mounting structure for mounting the ceiling panel to the roof structure by inserting and fastening fastening members supported by the roof structure of the railway vehicle into a plurality of mounting holes provided in the ceiling panel. ,
each of the plurality of mounting holes has an insertion groove that opens to an end of the ceiling panel and a long groove that is formed in a direction orthogonal to the insertion groove and communicates with the insertion groove;
The mounting hole has cutouts formed at both ends of the long groove so as to be recessed toward the roof structure;
A railroad vehicle ceiling panel mounting structure characterized by: In the railway vehicle ceiling panel mounting structure according to claim 1 or claim 2,
The ceiling panel has a plurality of panel parts arranged side by side in the front-rear direction of the railway vehicle;
a hanging groove is provided along the longitudinal direction of the railway vehicle to movably hold the fastening member;
The mounting holes are provided in the plurality of panel portions, respectively;
The long groove is provided along the longitudinal direction of the railway vehicle,
A railroad vehicle ceiling panel mounting structure characterized by: A railway vehicle comprising the railway vehicle ceiling panel mounting structure according to any one of claims 1 to 3.

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