JP2003034247A - Coupling structure of interior trim panel for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coupling structure of interior trim panels for a vehicle which creates no discordant noise at a coupling part of the panels when coupling a plurality of interior trim panels for a vehicle formed of extrusion-molded materials. SOLUTION: In the coupling structure 30 of the interior trim panels for the vehicle, a plurality of panels 12 and 13 formed of extrusion-molded materials of aluminum alloys abut on each other, and a sound-insulating sheet 34 is sandwiched between coupling parts including a recessed part 21 and a tip piece 27 both located at the end part in the direction orthogonal to the longitudinal direction of the panels 12 and 13. Further, the coupling parts of the abutting panels 12 and 13 are fixed with each other with a rivet 36 (a fastening tool) passing through the sound-insulating sheet 34, and a porous sound absorbing material 32 is interposed along the longitudinal direction between the coupling parts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a connecting structure of panels that form an interior such as a ceiling or a wall in a vehicle such as a bus or a passenger ship.

[0002]

2. Description of the Related Art A metal panel is sometimes used as an interior material for forming the interior of a passenger compartment of a railway vehicle or a bus. When such a panel is made of an extruded profile made of an aluminum alloy, the width dimension of the extruded profile is limited for manufacturing reasons. There is. For example, it has been proposed to construct an interior material (ceiling structure) for a ceiling in a railway vehicle by connecting a plurality of extruded shape members to each other (Japanese Patent Laid-Open No. 2001-13).
8909 publication).

By the way, when a plurality of extruded shape members are connected, they are often fixed by rivets or screw fasteners between the ends in the cross-sectional direction. When fixed with such a rivet, its physical characteristics are different from the extruded profile, so if it is used for a long time as a railway vehicle, the holes through which fasteners such as rivets have penetrated may expand. May come. As a result, adjacent extruded shape members rub against each other in the cross-sectional direction and in other directions, which causes annoying noise in the passenger cabin and impairs the atmosphere in the room. In particular, when the thickness of the extruded profile material that constitutes the interior material is reduced in response to the recent demand for weight reduction of the vehicle body, the rigidity of the profile material itself also decreases, so that the above-mentioned noise is easily induced. That was also a problem.

[0004]

DISCLOSURE OF THE INVENTION The present invention solves the problems in the prior art described above, and when connecting a plurality of vehicle interior panels using extruded profile members, a connecting portion between the panels is used. It is an object of the present invention to provide a connecting structure for an interior panel of a vehicle that prevents noise from being generated.

[0005]

In order to solve the above-mentioned problems, the present invention has been conceived in view of sandwiching and connecting a sound-insulating sheet between the connecting portions of panels made of extruded shape members. It is a thing. That is, the connection structure of the vehicle interior panel of the present invention (Claim 1) is such that the interior such as the ceiling or the interior wall of a vehicle is composed of a plurality of panels made of extruded aluminum alloy. Panel is adjacent to each other, the sound insulation sheet is sandwiched between the connecting portions located at the end of the direction orthogonal to the longitudinal direction of each panel, and the adjacent panels by the fasteners penetrating the sound insulation sheet. The connection parts are fixed to each other. The longitudinal direction is the extruding direction of the extruded profile forming the panel.

According to this, in a plurality of panels made of extruded aluminum alloy, the sound insulating sheet is sandwiched between the connecting portions of a pair of adjacent panels,
The connecting portions are connected to each other such that fasteners such as rivets and screws penetrate the sheet. For this reason,
Since the panels do not come into direct contact with each other, it is possible to firmly connect the adjacent panels while preventing the generation of annoying noise due to the metal touch. Further, even if a hole through which a fastener such as a rivet penetrates is expanded due to aging, and even if a sound is generated between the fastener and any panel, the sheet is immediately shielded. Therefore, it is possible to reliably prevent annoying noise from being transmitted to the room. As the sound insulation sheet, for example, a sheet of polyolefin resin, silicon resin, vinyl chloride or the like is used, and it is desirable that it also has a cushioning effect. Further, fasteners such as rivets are driven in from the outside of adjacent panels. Further, the vehicles to which the present invention is applied include ships such as railway cars, buses, passenger ships including ferry and freight ships, various passenger airplanes, hovercraft, and the like.

Further, according to the present invention, a porous sound absorbing material is arranged along the longitudinal direction of the connecting portions located at the ends of the adjacent panels, and the sound absorbing material fixes the connecting portions to each other. Connection structure of an interior panel for a vehicle, which is interposed between the connection parts so as to come into contact with the fastener (claim 2)
Is also included. According to this, a porous sound absorbing material is arranged (intervened) between the connecting portions of adjacent panels, and the sound absorbing material is brought into contact with the portion near the tip of the fastener penetrating the sound insulating sheet, and Even if a sound is generated between the connecting portions of the panels, the sound absorbing material immediately absorbs or attenuates the sound.
Further, even if the connecting portions of the adjacent panels are loosened or the fasteners are loosened due to an unexpected external force or aging, the adjacent panels are prevented from sliding on each other. As a result, it is possible to prevent noise from being generated indoors. The porous sound absorbing material may be a strip of foam such as soft vinyl chloride resin, soft urethane resin, polyolefin resin, or thermoplastic elastomer.

Further, according to the present invention, among the pair of adjacent panels, a recess is provided along the longitudinal direction, which is open toward the other panel adjacent to the end of one panel.
The tip piece provided along the longitudinal direction at the end of the other panel is inserted into the recess of the one panel, and the recess of the one panel and the tip piece of the other panel are inserted from the outside of the recess. Also included is a vehicle interior panel connection structure (claim 3) in which the sound absorbing material is arranged so as to be fixed by the entering fastener and contact the fastener in the recess of the one panel.

According to this, the sound absorbing material can be easily inserted and arranged in the concave portion provided at the end portion of one panel, and the tip piece extending from the other adjacent panel with the sound absorbing material sandwiched therebetween is used to absorb the sound. The sound absorbing material can be reliably interposed between the connecting portions of the pair of adjacent panels, because the sound absorbing material is disposed by being inserted into the recess while being in contact with the material. Moreover, the concave portion
Since the (covering piece) and the tip piece are fixed by a fastener such as a rivet that penetrates the sound insulation sheet sandwiched between the two, the adjacent panels are connected to each other and the portion near the tip of the fastener is fixed. Easy to fit in sound absorbing material. Therefore, since the connection structure in which the sound absorbing material is interposed and the fastener is inserted thereinto, it is possible to prevent generation of noise and transmission to the room for a long period of time.

Further, according to the present invention, a vehicle interior panel connecting structure in which the sound insulating sheet is sandwiched between a cover piece forming a recess in the one panel and a tip piece of the other panel. (Claim 4) is also included. According to this, in a state in which the coating piece and the tip piece forming the recess made of aluminum alloy are not in direct contact and are adjacent to each other,
Since the fasteners are laid across a pair of panels, it is possible to firmly connect adjacent panels while preventing noise generation due to metal touch.

Further, according to the present invention, at least one of the tip of the concave portion of the one panel and the tip piece of the other panel is provided with a rib for reducing the width of the opening of the concave portion. A structure for connecting interior panels (claim 5) is also included. According to this, since the width of the opening in the recess of one panel is narrowed by any rib, the opening
It is possible to effectively attenuate and absorb the noise from the inside of the room through the (opening groove) while allowing the noise to pass therethrough.
Therefore, the sound generated from the room can be absorbed together with the sound generated from the above-mentioned connecting portion, so that the quietness of the room can be easily maintained. The pair of ribs may be provided so as to project vertically symmetrically from adjacent panels. This facilitates formation of a narrow opening groove in the vicinity of the center of the opening of the recess and enhances the sound collecting effect from the room side.

Further, in the present invention, a sound guiding piece is provided near the base end of the tip piece at the end portion of the other panel, and facing the opening of the recess of the one panel substantially obliquely. A vehicle interior panel connection structure (claim 6) is also included. According to this, the sound-inducing piece can easily guide the sound generated from the room through the narrow opening to the sound-absorbing material in the recess, and prevent inadvertent reflection to the room.
The sound-guiding piece is not limited to a linear inclined piece, but may be a curved piece having a gently curved cross section.

Further, a structure for connecting an interior panel for a vehicle, in which sound diffusion concave grooves that open to the inside of the room are provided along the longitudinal direction at positions excluding the connecting portions at both ends of the plurality of panels. 7) is also included. According to this, since the sound generated from the room is diffused by the groove, it is possible to reduce the noise itself on the room side. In addition, since the rigidity of the extruded shape member forming each panel can be increased, it becomes easy to prevent the work of connecting a plurality of panels and the inadvertent deformation after mounting as an interior panel.

In addition, at the ends of the plurality of panels in the longitudinal direction, a blocking member is arranged across the end faces of the adjacent panels, and the blocking member holds a cushioning member that abuts on the end faces of the respective panels. Also included is a vehicle interior panel connection structure (Claim 8) in which at least one of a cushioning material and a sound insulating sheet is interposed between a pair of opposing surfaces sandwiching the end face at the end of each panel. . According to this, it is possible to form an interior panel unit in which a plurality of panels are connected, and to sandwich the end portion of each panel between the plurality of panels and the expansion material with a cushioning material or a sound insulating sheet interposed. As a result, it is possible to reliably prevent generation of noise due to contact between metals. In addition, by individually disposing the cushioning material between the respective closing materials of the panel units adjacent to each other in the longitudinal direction and abutting them, the noise is prevented by the cushioning material and the panel and the interior panel unit are It is possible to easily absorb the error in the accommodation in the longitudinal direction.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1A is a schematic diagram showing a vertical cross section of a vehicle body 2 of a passenger railroad vehicle (vehicle) 1. As shown in FIG. 1 (A), the vehicle body 2 has an exterior composed of a floor structure 3, left and right side structures 4a and 4b, and a roof structure 5, a symmetrical net rack 9, an indoor upper corner panel 8, and And an interior including a ceiling interior panel unit 10 sandwiched between brackets 7 fixed to the lower side of the roof structure 5. The ceiling interior panel unit 10 is shown in FIG.
As shown in (B), the whole body forming the exterior of the vehicle body 2 formed by connecting the extruded shape members 5a to 5e made of an aluminum alloy, which has a large number of hollow portions 6 each having a truss beam cross section and a substantially right triangle, is formed. It is attached to a substantially arch-shaped roof structure 5 via a pair of left and right brackets 7, 7.

As shown in FIG. 1 (B), the ceiling interior panel unit 10 is made of an aluminum alloy (for example, JIS: A6063-
T5) a plurality of panels 11 to 15 made of extruded profile,
It is connected by the connecting structure 30 of the present invention. The cross section of the panels 11 to 15 is a horizontal piece 20 that gently curves.
And a sound diffusion groove 1 that is located in the center and opens to the indoor side
And 8 together. Left and right end panels 11, 15
A substantially horizontal flange 17 for fixing the bracket 7 to the bracket 7 is formed at the outer end. In addition, the relatively wide central panel 13 located at the center has two sound diffusion grooves 18 and symmetrically formed connecting portions of the same shape at both ends. The central panel 13 and the end panels 11 and 15
Intermediate panels 12 and 14 are disposed between and, and the panel unit 10 is formed by connecting the intermediate panels 12 and 14 to the panels 11, 13 and 15. Two or more intermediate panels may be arranged between the central panel 13 and the end panels 11 and 15.

FIG. 2A shows the above panel before connection.
The cross section of (extruded profile) 12, 13 is shown.
15 illustrates cross sections of extruded profiles of .about.15. Intermediate panel 12
2A is about 16 mm in length × about 127 mm in width and the thickness of the main part is 1.5 mm. The central panel 14 has a size of about 16 mm in length × about 173 mm in width and the thickness of the main part is 1.5 mm. Related panel 1
Numerals 2 and 13 are horizontal pieces 20 that are gently curved as an interior ceiling surface of the vehicle body 2, and one or two sound diffusion concave grooves 1 that are located substantially in the middle of the horizontal piece 20 and have a substantially semicircular cross section that opens toward the interior.
8 and.

As shown in FIG. 2A, on the right end side of the horizontal piece 20 in the intermediate panel 12, a vertical piece 22, a covering piece 24 extending horizontally from the tip of the vertical piece 22, and a horizontal piece 20. A recess 2 surrounded by a rib 23 standing from the tip of the end piece 20a and opening toward the adjacent central panel 13 side.
1 and 1 are integrally formed along the longitudinal direction (extrusion direction: the front-back direction of FIG. 2A). The end piece 20 of the horizontal piece 20
a, the recess 21, the vertical piece 22, the covering piece 24, and the rib 2
3 constitutes one of the connection parts of the present invention.

Further, as shown in FIG. 2A, the left end of the horizontal piece 20 in the intermediate panel 12 is opposed to the concave portion 21 of the end panel 11 which is inclined obliquely upward from the horizontal piece 20 and is adjacent thereto. A sound guide piece 26, a tip piece 27 that extends horizontally from the tip of the sound guide piece 26, and a rib 28 that hangs from the middle of the tip piece 27 and that faces the rib 23 of the adjacent panel 13 are along the longitudinal direction. Are integrally formed. The sound guide piece 26, the tip piece 27, and the rib 28
Constitutes the other of the connecting portions in the present invention. Figure 2 (A)
As shown in FIG. 5, the sound guides 26 are provided on the left end side and the right end side of the horizontal piece 20 of the central panel 13 and are inclined obliquely upward from the horizontal piece 20 and face the concave portions 21 of the adjacent panels 12 and 14,
A tip piece 27 that extends horizontally from the tip of the sound guide piece 26, and a rib 28 that hangs from the middle of the tip piece 27 and that opposes the rib 23 of the adjacent panels 12 and 14 are symmetrical in the longitudinal direction. It is formed along.

The left end and right end of the intermediate panel 14, which is symmetrically connected to the intermediate panel 12 with the central panel 13 interposed therebetween, also has an end piece 20a of the horizontal piece 20, a recess 21, a vertical piece 22, and a covering piece. 24 and the rib 23, and the sound-inducing piece 26, the tip piece 27, and the rib 2.
The other connecting portion made of 8 is integrally formed with the intermediate panel 12 in the left-right direction. Further, as will be described below, the end panels 11 and 15 are provided with only one of the above-mentioned one or the other connecting portion which is connected to the adjacent intermediate panels 12 and 14 at the inner end of the horizontal piece 20. There is. Further, either the rib 23 or the rib 28 between adjacent connecting portions may be omitted.

As shown in FIG. 2B, the pair of adjacent panels 12 and 13 are connected by a connecting structure 30. The connecting structure 30 is formed by the method shown in FIGS. First, as shown in FIG. 3A, on the bottom surface of the tip piece 27 of the right panel 13, a porous sound absorbing material 32 is arranged along the longitudinal direction by a double-sided tape or an adhesive. The sound absorbing material 32 is a strip made of a foamed material such as soft vinyl chloride resin and having a cross section of length × width 8 mm, which is long in the front-rear direction in the drawing. In addition, the sound insulating sheet 34 having a thickness of about 0.3 mm extends over the top surface and the tip surface of the tip piece 27.
Are bonded in the same manner as above. The sound insulation sheet 34 is made of a polyolefin resin sheet, and is bonded to each of the necessary portions of the front end piece 27 of the panel 13 along the longitudinal direction.

Further, as shown in FIG. 3 (A), through-holes 29, 35 communicating with each other and reaching the sound absorbing material 32 are formed in the front end piece 27 of the right central panel 13 and the sound insulating sheet 34. The holes are individually drilled at a plurality of positions along the front-back direction. Further, a plurality of through holes 25 are bored in the covering piece 24 forming the recess 21 of the left intermediate panel 12 along the front-rear direction of FIG. 3 (A). Next, as shown in FIG.
The tip piece 27 of the right side panel 13 and the sound absorbing material 32 adhered thereto are inserted into the recess 21 of the left side panel 12. At this time, the portion of the sound absorbing material 32 near the bottom surface is temporarily compressed and inserted into the recess 21. As a result, the sound insulating sheet 34 is sandwiched between the covering piece 24 and the tip piece 27, and a through hole 33 is formed through which the through holes 25, 29 and 35 communicate. At the same time, panels 12, 13
Ribs 23 and 28 of the panel are vertically opposed to each other and the width of the opening of the recess 21 in the panel 12 is narrowed.
(Opening portion) 31 is formed. The sound guiding piece 26 of the panel 13 is diagonally positioned so as to face the opening groove 31.

Next, the covering piece 24, the sound insulating sheet 34,
A blind bed (fastener) 36 is inserted into the through hole 33 penetrating the tip piece 27 from above in FIG. 3B, and the spherical portion 39 located at the tip of the rivet 36 is attached to the sound absorbing material 3.
Move into 2. Then, by pulling the base end portion side (not shown) of the rivet 36 upward, the spherical portion 3
9 rises and immediately expands the adjacent ring piece 38 along the radial direction. As a result, FIG. 3 (C) and FIG. 2 (B)
As shown in FIG. 1, the panels 12 and 13 are fixed by the blind rivet 36 with the covering piece 24 and the tip piece 27 sandwiching the sound insulating sheet 35, and the intermediate panel 1
The sound absorbing material 32 inserted in the recess 21 is interposed between the end piece 20 a of the second horizontal piece 20 and the tip piece 27 of the central panel 13. Thereby, the connection structure 30 of the panels 12 and 13 is formed.

In this connection structure 30, as shown in FIGS.
As shown in (B), the panels 12 and 13 are connected to each other through the sound absorbing material 32 at their connecting portions, and the blind rivet 3 is connected.
Since they are fixed by 6, the metal parts of the extruded profiles forming the panels 12, 13 are separated from each other. Further, since the covering piece 24 and the tip piece 27 of the panels 12 and 13 are fixed by the rivets 36 with the sound insulating sheet 34 having a cushioning property interposed therebetween, even if various vibrations are generated as the vehicle travels. Do not rub each other. Therefore, it is possible to prevent the generation of unpleasant and offensive sounds due to the contact between metals.

Further, due to secular change, the rivet 36
Even if the diameter of the through hole 33 is increased and the rivet 36 is loosened, the generated sound is absorbed and attenuated by the adjacent sound absorbing material 32, and is not transmitted to the indoor side. Moreover, the sound generated from the room is generated by the horizontal pieces 2 of the panels 12 and 13.
In addition to being reflected at 0, it is diffused and attenuated by each sound diffusion groove 18. In addition, the sound generated in the room that has reached between the panels 12 and 13 is guided along the sound guide piece 26, enters the recess 21 from the opening groove 31, and is absorbed by the sound absorbing material 32. As a result, the sound generated from the connecting portion between the panels 12 and 13 and the room can be reliably absorbed and attenuated, so that the quietness of the room can be easily maintained.

As shown in FIG. 2C, the panels 12 and 13 are
The panels 11, 14, 15, which are adjacent to
To form a ceiling interior panel unit 10 having a generally loose arch-shaped cross section. It should be noted that the end panels 11 and 15 located at both ends in FIG. 2C have only one of the above-mentioned connecting portions at the inner end near the adjacent panels 12 and 14 and are along the other outer end. And a substantially horizontal flange 1 for fixing to the bracket 7
7 and L-shaped piece 19. As shown in the plan view of FIG. 4 (A), the ceiling interior panel unit 10 extends over the end faces of the panels 11 to 15 at both ends in the longitudinal direction (extrusion direction) of the connected panels 11 to 15. Sealing material 40
a and 40b are arranged. Incidentally, reference numeral 5 shown in FIG.
Reference numeral 9 is a reinforcing member which is fixed over the panels 11 to 15 of each panel unit 10 via the sound-insulating sheet 34 and which has a channel-shaped cross section and is gently curved.

The closing members 40a and 40b are the panel 11
As shown in FIG. 4 (B), it is an extruded profile of an aluminum alloy similar to Nos. 15 to 15, and has a long horizontal piece 41 located at the middle of the height direction, a short horizontal piece 42 at the lower end, and a wide bottom groove 45. A lower vertical piece 44 having and a recess 43 surrounded by these
And an upper vertical piece 46 which is located on the upper side and has an outward bottom wide groove 47 integrally formed along the front-rear direction in the drawing. The recess 43 has a central panel 13
The end portions of the panels 11 to 15 in the longitudinal direction are inserted, and the cushioning member 54 made of a soft resin in which the base portion 55 having a trapezoidal cross section is forcibly inserted into the bottom wide concave groove 45 contacts the end surface of the panel 13. Contact. Further, a sound insulating sheet 48 similar to the above is sandwiched between the long horizontal piece 41 and the panel 13, and
The panel 13 itself is supported on the edge piece 58 of the cushioning material 56 made of a soft resin, which is forcibly wound around the short horizontal piece 42 from the lower side.

As shown in FIG. 4 (B), a soft resin cushioning material 50 into which a base 51 having a rectangular cross section is forcibly inserted is inserted into the bottom wide concave groove 47 opening to the outside, and protrudes to the outside. The convex portion 52 having an elliptical cross-section has an adjacent panel unit 1
It is in surface contact with the convex portion 52 of the cushioning member 50 that is symmetrically attached to the zero blocking member 40b. The panel units 1 adjacent to each other in the longitudinal direction due to the contact between the protrusions 52 of the cushioning material 50.
The gap between 0 and 10 is closed, the interior of the vehicle body 2 is secured in the longitudinal direction, and the sound generated from the roof structure 5 side of the exterior is blocked. In addition, the blocking material 40
The a and 40b have a gentle curve in the longitudinal direction thereof, following the arch-shaped cross section of the panels 11 to 15 connected to each other.

A ceiling interior panel unit 10 including the panels 11 to 15 and the closing members 40a and 40b as described above.
As shown in FIG. 1B, the horizontal pieces 17, 17 extending from the end panels 11, 15 at both ends are fixed to the brackets 7, 7 fixed to the roof structure 5 with screws or the like, and They are sequentially arranged in the longitudinal direction of the vehicle body 2. As a result, the ceiling surface in the interior of the railway vehicle 1 can be formed, the sound is not generated in the vicinity of the ceiling, the sound generated from the room is also attenuated, and the quietness in the room can be stably maintained. In addition, the panels 11 to 15 and the blocking members 40a and 40b as described above.
The ceiling interior panel unit 10 consisting of can be applied to interiors such as buses. It is also possible to form the side wall in the interior of the railcar 1, the bus, etc. by providing an opening of the window frame and fitting the sash therein to kill it.

The present invention is not limited to the embodiments described above. For example, as shown in FIG. 5 (A), the sound diffusion concave groove 1 having a cross-sectional shape is formed in the middle of the horizontal piece 20.
8a, or a panel 11a (12a to 15a) or 11b (12b to 15b) made of an extruded profile in which a sound diffusion concave groove 18b having a square cross section and a ceiling shape is integrally provided
May be connected to each other by the connecting structure 30 to form the panel unit 10. In this case, any of the panels 11 to 15 and the panels 11a to 15a, 11
Any of b to 15b can be used in combination as appropriate.

Further, as shown in FIG. 5B, in the panels 12 and 13 to be connected, a rib 23a is provided upright from the end piece 20a of the recess 21 in the left intermediate panel 12,
Rib 2 hanging from the tip piece 27 of the right central panel 13
8a and 8a may be formed in a substantially V-shaped cross section and vertically symmetrical to each other. Accordingly, the opening groove 31a that becomes narrower toward the recess 21 can be formed, and the connection structure 30a that can reliably guide the sound generated from the room guided through the sound guide piece 26 to the sound absorbing material 32 in the recess 21 is obtained. To be Incidentally, FIG. 5 (B)
As shown in FIG.
You may fix between the connection parts of 2 and 13 using the screw (fastener) 59. Further, the rib 28a of the central panel 13 may be omitted, and the rib 23a of the intermediate panel 12 may be made higher in the vertical direction. Further, as shown by a broken line in FIG. 5B, the sound guiding piece 26a having a slightly upwardly curved cross section may be provided in the connecting portion such as the central panel 13 or the intermediate panel 12.

Further, as shown in FIG. 5 (C), a blocking member 60 made of an extruded shape may be arranged at both longitudinal ends of the panels 11 to 15 by the connecting structures 30 and 30a. The blocking member 60 includes a vertical piece 61, a long horizontal piece 62 extending laterally from the middle thereof, upper and lower wide concave grooves 63 and 67 opening to the outer surface of the vertical piece 61, and an inner surface of the vertical piece 61. A wide bottom concave groove 66, a horizontal piece 65 at the lower end, and a recess 64 sandwiched between the horizontal pieces 62, 65,
It has integrally along the front-back direction of illustration. As shown in FIG. 5C, the end portion of the panel 13 illustrated is inserted into the recess 64 of the closing member 60, and a long horizontal piece 62 is provided on the upper surface thereof.
The sound-insulating sheet 68 similar to the above with the U-shaped portion 69 wrapped around the tip of the sheet contacts. Further, a cushioning material 70 made of a soft resin is wound around the horizontal piece 65 of the closing material 60 so as to extend over the wide bottom concave grooves 66 and 67.

As shown in FIG. 5 (C), the cushioning material 70 has either one of the bases 73 and 77 having a trapezoidal cross section first and the wide bottom concave groove 6 is formed.
6 and 67, the L-shaped portion 74, the U-shaped portion 75, and the horizontal portion (decorative surface) 76 are wound around the horizontal piece 65 of the closing member 60, and the remaining base portions 73 and 77 are wide-bottomed grooves. 66,67
Is fitted to. As a result, the end surface of the panel 13 has a cushioning material 7
The end of the panel 13 is supported by the L-shaped portion 74 of the cushioning material 70. Further, as shown in FIG. 5 (C), the base portion 80 of the cushioning material 78 made of a soft resin and containing the hollow portion 79 is forcibly inserted into the wide bottom concave groove 63 of the closing material 60, so that the longitudinal direction is increased. It makes surface contact with the cushioning material 78 symmetrically attached to the adjacent blocking material 60. By using the blocking material 60, the sound insulating sheet 68, and the cushioning materials 70 and 78 as described above, the same function and effect as those of the blocking materials 40a and 40b can be obtained, and the number of cushioning materials can be reduced. Assembly work of the unit panel 10 also becomes easy.

Incidentally, the central panel 13 is omitted, and the pair of end panels 11 or end panels 15 and a plurality of intermediate panels 12, 14 are connected by a connecting structure 30 of the present invention or the like to form the unit panel. You may get 10. In this case, all the connecting portions in each connecting structure 30 are the ceiling interior unit panel 10 oriented in the same direction. It should be noted that, on the surface of the horizontal piece 20 such as the panels 11 to 15 on the indoor side, fine concavo-convex strips may be continuously attached at the same time during extrusion, and the surface of the horizontal piece 20 on the indoor side. Attach a number of uneven groups by sandblasting,
Alternatively, a large number of short resin fibers may be planted by an electric flocking method via an adhesive layer. Related uneven strips, uneven groups,
Alternatively, the flocked resin fiber group can attenuate the sound generated from the room and give passengers a calm indoor feeling.

[0035]

According to the above-described vehicle interior panel connection structure (claim 1) of the present invention, a plurality of extruded profile panels do not come into direct contact with each other due to the sound insulating sheet, and such a sheet is provided. Are connected by fasteners penetrating through. Therefore, no sound is generated by the metal touch, and even if the connecting portion between adjacent panels is loosened due to an unexpected external force or aging, it is possible to prevent the panels from sliding on each other. Therefore, it is possible to prevent a situation where noise is generated in the passenger cabin. Further, according to the connecting structure of claim 2, since the sound absorbing material is arranged in the connecting portion so as to come into contact with a fastener such as a rivet or a screw that fixes and connects the connecting portions of the adjacent panels, Even if the diameter of the through hole of the fastener increases due to secular change, the sound generated between the fastener and any panel is immediately absorbed by the sound absorbing material. Therefore, it is possible to reliably prevent annoying noise from being transmitted to the room.

Further, according to the connecting structure of the third aspect, the tip piece extending from the other adjacent panel sandwiching the sound absorbing material inserted into the recess provided in one panel is inserted into the recess while contacting the sound absorbing material. Therefore, the sound absorbing material can be surely interposed between the connecting portions of the pair of adjacent panels. Moreover, since the recess and the tip piece are fixed by the fastener via the sound-insulating sheet, it is possible to connect the adjacent panels to each other and easily store the portion near the tip of the fastener in the sound absorbing material. Therefore, it is possible to form a connecting structure in which the sound absorbing material is interposed and in which the fastener enters, so that generation of noise and transmission to the room can be prevented for a long period of time. Further, according to the connecting structure of claim 4, the fastener is driven on the pair of panels without directly contacting the covering piece of the recess made of an aluminum alloy and the tip piece and adjoining each other. It is possible to firmly connect adjacent panels while preventing noises caused by metal touch.

Further, according to the connecting structures of claims 5 and 6,
Sound generated from the room can be easily guided to the sound absorbing material through the opening groove and inadvertent reflection to the room is prevented, or the width of the opening in the recess of the panel is narrowed by the rib, so that the room The noise from the inside can be concentratedly passed and absorbed by the sound absorbing material while being effectively attenuated. Also,
According to the connection structure of claim 7, since the sound diffusion concave groove diffuses and attenuates the sound generated from the room, the noise itself in the room can be reduced and the rigidity of the extruded profile itself forming each panel can be reduced. It is enhanced, and it becomes easy to prevent the work that connects a plurality of panels and the inadvertent deformation after mounting as an interior panel. In addition, according to the connection structure of claim 8,
It is possible to form an interior panel unit that connects multiple panels, and also ensure that noise is generated due to metal-to-metal contact by interposing cushioning materials and sandwiching each panel with sound insulation sheets between multiple panels and expansion materials Can be prevented.

[Brief description of drawings]

FIG. 1A is a schematic view showing a vertical cross section of a vehicle body of a railway vehicle, and FIG. 1B is an enlarged view of a one-dot chain line portion B in FIG.

2A is a schematic view showing a cross section of a main panel used in the present invention, FIG. 2B is a schematic view showing a connection structure of the present invention, and FIG. 2C is a schematic view showing a state in which a plurality of panels are connected. Fig.

3 (A) to 3 (C) are schematic views showing a procedure for obtaining the connection structure shown in FIG. 2 (B).

FIG. 4A is a partial plan view showing a ceiling interior panel unit obtained by the present invention, and FIG. 4B is a sectional view taken along the line BB in FIG.

FIG. 5 (A) is a cross-sectional view showing a panel of a different form, (B)
4C is a schematic view showing a connecting structure having a different form, and FIG. 4C is a cross-sectional view similar to FIG. 4B using a blocking member having a different form.

[Explanation of symbols]

1 …………………… Railway vehicle (vehicle) 10 ……………… Ceiling interior panel unit 11-15 ……… Panel 18 ……………… Sound diffusion groove 21 ……………… Concave 23, 28 ... Ribs 24 ……………… Coated piece 26, 26a ... Sound-inducing piece 27 ……………… Tip piece 30, 30a ... Connection structure 31 ……………… Opening groove (opening) 32 ……………… Sound absorbing material 34, 48, 68 ... Sound insulation sheet 36 ……………… Rivets (fasteners) 40a, 40b ... Blocking material 50,54,56 ... Cushioning material 59 ……………… Screws (fasteners) 60 ……………… Blocking material 70,78 ......... Cushioning material

Claims (8)

[Claims] 1. An interior of a vehicle or the like such as a ceiling or an interior wall is constituted by a plurality of panels made of extruded aluminum alloy, wherein the plurality of panels are adjacent to each other and the longitudinal direction of each panel is the same. A sound-insulating sheet is sandwiched between connecting portions located at ends in the orthogonal direction, and the connecting portions of adjacent panels are fixed to each other by a fastener penetrating the sound-insulating sheet. Connecting structure for interior panels for vehicles. 2. A porous sound absorbing material is arranged along a longitudinal direction of a connecting portion located at an end portion of the adjacent panel, and the sound absorbing material contacts the fastener for fixing the connecting portions to each other. It intervenes between the said connection parts so that it may be connected, The connection structure of the interior panel for vehicles of Claim 1 characterized by the above-mentioned. 3. A recess formed along the longitudinal direction of the pair of adjacent panels, the recess being open toward the other panel adjacent to the end of one panel, and the recess of the other panel being provided on the other side. While inserting the tip piece provided along the longitudinal direction at the end of the panel, the concave portion of the one panel and the tip piece of the other panel,
3. The sound absorbing material is arranged so as to be fixed by the fastener that enters from the outside of the recess and contact the fastener in the recess of the one panel. Connection structure of the vehicle interior panel described. 4. The vehicle according to claim 3, wherein the sound insulation sheet is sandwiched between a cover piece forming a recess in the one panel and a tip piece of the other panel. Internal panel connection structure. 5. A rib for reducing the width of the opening of the recess is provided on at least one of the tip of the recess of the one panel and the tip piece of the other panel. 3. The vehicle interior panel connection structure according to 3 or 4. 6. A sound guiding piece is provided at an end portion of the other panel near the base end of the tip piece, the sound guiding piece facing the opening of the recessed portion of the one panel substantially obliquely. The vehicle interior panel connection structure according to any one of claims 3 to 5. 7. A sound-diffusing groove that opens to the inside of the room is provided along the longitudinal direction at a position excluding the connecting portions at both ends of the plurality of panels. The connecting structure for an interior panel for a vehicle according to any one of 1. 8. A blocking member is arranged at an end portion in the longitudinal direction of the plurality of panels so as to straddle end faces of adjacent panels, and the blocking member holds a cushioning member that abuts on the end face of each panel, and At least one of a cushioning material and a sound insulating sheet is interposed between a pair of opposing surfaces sandwiching the end surface at an end portion of the panel, and the panel according to any one of claims 1 to 7, wherein Connection structure of the vehicle interior panel described.