JP6825833B2 - Railroad vehicle luggage rack - Google Patents

Description

The present invention relates to a railroad vehicle luggage rack, and more particularly to a railroad vehicle luggage rack capable of reducing muffled noise in a passenger compartment.

Conventionally, there has been known a railroad vehicle having luggage racks protruding from a side structure toward the inside of a cabin and having a loading platform on the upper surface on both the left and right sides of the upper part of the cabin. Patent Document 1 describes the entire upper surface of the luggage rack. And a technique for reducing noise in a cabin by attaching a sound absorbing panel to the entire lower surface is disclosed.

Japanese Unexamined Patent Publication No. 2014-101078 (paragraphs 0022 to 0024, FIG. 1 and the like)

Here, the applicant of the present application states that, in a railroad vehicle having a relatively high speed, different sound fields are formed in the space above the luggage rack and the space below the luggage rack due to the input of disturbance to the vehicle due to traveling. It has been found that if the sound fields of the space above the luggage rack and the space below the luggage rack can be integrated, the muffled sound in the cabin can be reduced (not known at the time of filing the application). It was also found that even if the sound absorbing panels are attached to the entire upper surface and the entire lower surface of the luggage rack as in the conventional technique described above, the sound fields of the luggage rack upper space and the luggage rack lower space cannot be integrated.

Against the background of the above circumstances, an object of the present invention is to provide a luggage rack for a railway vehicle capable of reducing muffled noise in a passenger compartment.

In order to achieve this object, the railroad vehicle luggage rack according to claim 1 is projected from the side structure of the railroad vehicle toward the inside of the passenger compartment and is arranged on both the left and right sides of the upper part of the passenger compartment, and the upper surface is the loading platform surface. A bracket whose base end side is attached to the side structure and a plurality of brackets are arranged at intervals in the longitudinal direction of the vehicle, and a top plate member which is erected between the plurality of brackets to form the upper surface. , A lower plate member erected between the plurality of brackets to form a lower surface opposite to the upper surface, and a first interposition formed of an elastic material and interposed between the bracket and the lower plate member. A member is provided, a space is formed between the upper plate member and the lower plate member, and a plurality of openings are formed in each of the upper plate member and the lower plate member to form the upper plate member. the lower surface of the vehicle longitudinal side of the outer edge is supported directly on the upper surface of the bracket, the lower plate member by the first interposition member is elastically supported relative to the bracket.

The railroad vehicle luggage rack according to claim 2 is provided so as to project from the side structure of the railroad vehicle toward the inside of the passenger compartment and is arranged on both the left and right sides of the upper part of the passenger compartment, and the upper surface serves as the loading platform surface. Between the brackets that are attached to the side structure and are arranged at intervals in the longitudinal direction of the vehicle, the upper plate member that is erected between the plurality of brackets and forms the upper surface, and the plurality of brackets. A lower plate member that is erected and forms a lower surface opposite to the upper surface is provided, a space is formed between the upper plate member and the lower plate member, and the upper plate member and the lower plate member A plurality of openings are formed in each of the above plates, the upper plate member is formed in a flat plate shape, and the lower plate member is formed in a corrugated plate shape.

The railroad vehicle luggage rack according to claim 3 is provided so as to project from the side structure of the railroad vehicle toward the inside of the passenger compartment and is arranged on both the left and right sides of the upper part of the passenger compartment, and the upper surface serves as the loading platform surface. Between the brackets attached to the side structure and arranged at intervals in the longitudinal direction of the vehicle, the upper plate member erected between the plurality of brackets to form the upper surface, and the plurality of brackets. The upper plate member includes a lower plate member that is erected and forms a lower surface opposite to the upper surface, and a second intermediate member that is formed of an elastic material and is interposed between the side structure and the bracket. A space is formed between the upper plate member and the lower plate member, and a plurality of openings are formed in each of the upper plate member and the lower plate member, and the bracket is attached to the side structure by the second interposition member. Elastically supported against.

The railroad vehicle luggage rack according to claim 4 is provided so as to project from the side structure of the railroad vehicle toward the inside of the passenger compartment and is arranged on both the left and right sides of the upper part of the passenger compartment, and the upper surface serves as the loading platform surface. A bracket that is attached to the side structure and is arranged at intervals in the longitudinal direction of the vehicle, and a top plate member that is erected between the plurality of brackets to form the upper surface and a plurality of openings. A lower plate that is erected between the plurality of brackets to form a lower surface opposite to the upper surface and a plurality of openings are formed to form a space between the upper plate member and the lower plate. The member is disposed between the upper plate member and the lower plate member in a posture in which the upper surface of the concave portion faces the opening of the upper plate member while having a concave portion with an open upper surface, and liquid is applied to the concave portion. A holding means formed so as to be held is provided.

According to the railroad vehicle luggage rack according to claim 1, a bracket whose base end side is attached to the side structure and a plurality of brackets are arranged at intervals in the longitudinal direction of the vehicle, and a luggage rack erected between the plurality of brackets. It is provided with an upper plate member forming the upper surface of the above plate and a lower plate member erected between a plurality of brackets to form the lower surface of the luggage rack, and a space is formed between the upper plate member and the lower plate member. Since a plurality of openings are formed in each of the upper plate member and the lower plate member, the openings of the upper plate member, the space between the upper plate member and the lower plate member, and the openings of the lower plate member are used. Therefore, sound can be transmitted between the space above the luggage rack and the space below the luggage rack. As a result, the sound fields of the luggage rack upper space and the luggage rack lower space can be integrated to reduce the muffled sound in the cabin.

Further, according to claim 1, the passenger equipment can be arranged by utilizing the space between the upper plate member and the lower plate member. Examples of passenger equipment include light irradiation means for irradiating light and voice generation means for generating sound. When the light irradiation means is arranged, the light is irradiated to the vehicle interior through the plurality of openings of the upper plate member and the lower plate member, so that flicker can be suppressed.

Further, a first intermediate member formed of an elastic material and interposed between the bracket and the lower plate member is provided, and the lower plate member is elastically supported by the first intermediate member with respect to the bracket. It is possible to suppress the vibration of the lower plate member due to the transmission of sound between the space above the shelf and the space below the luggage rack. As a result, it is possible to suppress the vibration of the lower plate member and the generation of radiated sound.

Further, since the lower plate member is elastically supported by the first interposition member with respect to the bracket, the first interposition member is elastically deformed (buffered) when, for example, the passenger collides the head with the lower plate member. Action) can be used to mitigate the impact in the event of a collision. Therefore, passenger injuries can be suppressed.

According to the railroad vehicle luggage rack according to claim 2, since the lower plate member is formed in a corrugated plate shape, when sound is transmitted between the luggage rack upper space and the luggage rack lower space, it is relatively relatively. High-frequency sound can be diffusely reflected to make the sound field in the cabin more uniform. As a result, the muffled sound in the guest room can be reduced.

According to the railroad vehicle luggage rack according to claim 3, a second intermediate member formed of an elastic material and interposed between the side structure and the bracket is provided, and the bracket is sided by the second intermediate member. Since it is elastically supported by the structure, even if the side structure vibrates due to the input of disturbance to the vehicle due to traveling, it is possible to suppress the vibration from being transmitted to the luggage rack. That is, it is possible to prevent the luggage rack from becoming an oscillation source of noise.

According to the cargo rack for railroad vehicles according to claim 4, the upper surface is provided with an open recess and the upper surface of the recess is arranged between the upper plate member and the lower plate member in a posture facing the opening of the upper plate member. Therefore, since the holding means formed so as to be able to hold the liquid in the recess is provided, when the liquid spills on the luggage rack, the liquid can be held in the recess of the holding means so that it is difficult to drop the liquid under the luggage rack.

(A) is a cross-sectional view of a railroad vehicle according to an embodiment of the present invention, and (b) is a partially enlarged top view of a luggage rack in the direction of arrow Ib of FIG. 1 (a). Is a partially enlarged bottom view of the luggage rack in the direction of arrow Ic in FIG. 1 (a). It is sectional drawing of the cargo bed in line II-II of FIG. 1 (b). FIG. 3 is a partially enlarged cross-sectional view of the luggage rack in Part III of FIG. FIG. 3 is a partially enlarged cross-sectional view of a luggage rack in Part IV of FIG. It is sectional drawing of the cargo bed 60 in the VV line of FIG. 1 (b). FIG. 5 is a partially enlarged cross-sectional view of a luggage rack in the partial VI of FIG. FIG. 5 is a partially enlarged cross-sectional view of a luggage rack in Part VII of FIG. FIG. 7 is a partially enlarged cross-sectional view of a luggage rack in line VIII-VIII of FIG. It is a partially enlarged sectional view of the cargo bed in 2nd Embodiment. It is a partially enlarged sectional view of the luggage rack in 3rd Embodiment.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. First, the passenger compartment R of the railway vehicle 100 will be described with reference to FIG. 1A. FIG. 1A is a cross-sectional view of the railcar 100 according to the embodiment of the present invention, and corresponds to a cross section cut in a plane orthogonal to the longitudinal direction of the vehicle. In addition, in FIG. 1A, the railroad vehicle 100 is schematically shown in order to simplify the drawing and facilitate understanding.

As shown in FIG. 1A, the railroad vehicle 100 has an underframe 10 supported by a bogie (not shown).
A pair of side structures 20 erected from the end of the underframe 10 in the vehicle width direction (left-right direction in FIG. 1A) and the upper side of the pair of side structures 20 (upper side in FIG. 1A). A roof structure 30 for connecting the ends of the vehicle and a wife structure 40 for covering the front and rear of the vehicle (the front side and the back side of the paper in FIG. 1A) are provided, and the internal space surrounded by them is referred to as the guest room R.

In the passenger compartment R, seats 50 are arranged on the left and right sides of the underframe 10, and above each of the seats 50 (on the left and right sides of the upper part of the passenger compartment R), a multifunctional luggage rack for railway vehicles (hereinafter referred to as "loading rack 60"). (Referred to as) is arranged. The luggage rack 60 is a portion whose upper surface serves as a loading platform surface, and is projected from the side structure 20 toward the inside of the cabin R.

The side structure 20 is covered with an interior panel P1 in an area below the vehicle shelf 60 and a side ceiling panel P2 in an area above the vehicle shelf 60, and is mounted on the roof structure 30. The ceiling panel P3 is laid over.

1 (b) is a partially enlarged top view of the luggage rack 60 in the direction of arrow Ib of FIG. 1 (a), and FIG. 1 (c) is a view of the luggage rack 60 in the direction of arrow Ic of FIG. 1 (a). It is a partially enlarged bottom view of. In addition, in FIG. 1B and FIG. 1C, the number of arrangements of the openings 62a and 63a is omitted in order to simplify the drawing and facilitate understanding.

As shown in FIGS. 1B and 1C, the luggage rack 60 has an upper plate member 62 forming an upper surface (loading platform surface) and a lower plate member 63 forming a lower surface (bottom surface), respectively. A plurality of openings 62a and 63a are formed, and a space S (see FIG. 5) is formed between the upper plate member 62 and the lower plate member 63 (between facing each other), so that the space above the luggage rack (loading rack 60) is formed. The space above the vehicle (space above the roof structure 30) and the space below the luggage rack (space below the vehicle (seat 50 side) from the luggage rack 60) are communicated with each other through the openings 62a and 63a. As a result, it is possible to reduce the muffled sound in the cabin R caused by the formation of different sound fields in the luggage rack upper space and the luggage rack lower space. Details will be described later.

The openings 62a of the upper plate member 62 are formed as circular holes in the front view and are arranged in a grid pattern, while the openings 63a of the lower plate member 63 are formed as holes in the shape of a long hole in the front view in the major axis direction. Are arranged in a staggered manner in a posture along the longitudinal direction of the vehicle (vertical direction in FIG. 1C).

In the present embodiment, the diameter of the opening 62a is set to about 15 mm, the width of the elongated hole of the opening 63a (the diameter of both semicircles) is set to approximately 10 mm, and the total length of the elongated hole is set to approximately 40 mm. Further, the opening ratio of the upper plate member 62 is set to about 15%, and the opening ratio of the lower plate member 63 is set to about 50%.

Here, the aperture ratio means the ratio of the area of the opening 62a or the opening 63a to the area of the upper plate member 62 or the lower plate member 63. In this case, the area of the upper plate member 62 and the lower plate member 63 is a region formed by the opening 62a or the opening 63a (a region defined by a straight line circumscribing the outer edges of the openings 62a and 63a arranged in a grid pattern or a staggered pattern). ) Means the front projection area (vertical projection area). The same applies to the areas of the opening 62a and the opening 63a.

FIG. 2 is a cross-sectional view of the luggage rack 60 in line II-II of FIG. 1 (b), and FIGS. 3 and 4 are partially enlarged cross-sectional views of the luggage rack 60 in parts III and IV of FIG. .. 5 is a cross-sectional view of the luggage rack 60 in line VV of FIG. 1B, and FIGS. 6 and 7 are partially enlarged cross-sectional views of the luggage rack 60 in the partial VI and the partial VII of FIG. .. Further, FIG. 8 is a partially enlarged cross-sectional view of the luggage rack 60 on the line VIII-VIII of FIG. In addition, in FIGS. 2 to 8, in order to simplify the drawing and facilitate understanding, the number of arrangements of the openings 62a and 63a is omitted.

As shown in FIGS. 2 to 8, the luggage rack 60 is provided between a bracket 61 in which a plurality of luggage racks 60 are arranged at intervals in the vehicle longitudinal direction (vertical direction on the paper surface of FIGS. 2 and 3) and the plurality of brackets 61. The upper plate member 62 which is erected on the luggage rack 60 to form the upper surface (loading platform surface), the lower plate member 63 which is erected between the plurality of brackets 61 and forms the lower surface (bottom surface) of the luggage rack 60, and the bracket 61. It is held by the cover member 64 arranged on the tip side (right side of FIGS. 2 and 3), the holding member 65 arranged on the bracket 61 on the side structure 20 side of the cover member 64, and the holding member 65. The light irradiation means 66 is mainly provided.

As shown in FIG. 3, the bracket 61 is formed of an aluminum alloy into a long shape having a substantially rectangular cross section, and the base end side (left side in FIGS. 2 and 3) in the longitudinal direction is fastened to the fastened member 21 of the side structure 20. It is fixed. The bracket 61 is formed with a plurality of lightening holes penetrating along the vehicle longitudinal direction (direction perpendicular to the paper surface in FIG. 3).

The member to be fastened 21 includes a substrate portion 21a fixed to the inner wall of the side structure 20 and a pair of facing plate portions 21b erected from the substrate portion 21a. The facing plate portions 21b are formed in a plate shape and are arranged so as to face each other at a predetermined interval, and the base end side of the bracket 61 is inserted between the facing plates. An insertion hole through which the shaft of the bolt B1 is inserted is bored in the facing plate portion 21b and the bracket 61, respectively, and the nut N1 is screwed into the tip of the bolt B1 inserted into the insertion hole to form the bracket 61. It is fastened and fixed to the member to be fastened 21 (opposing plate portion 21b).

The fastened member 21 holds the bracket 61 in a posture in which the tip side of the bracket 61 is located above the vehicle (a posture of ascending and tilting toward a direction away from the side structure 20). Therefore, the loading platform surface (upper surface of the upper plate member 62) of the loading rack 60 is also inclined upward in the direction away from the side structure 20.

In this case, the facing distance between the facing plate portions 21b is set to be larger than the height dimension (dimension between the upper surface and the lower surface) of the bracket 61, and is set between the facing plate portion 21b and the upper surface of the bracket 61, and An elastic sheet 71 formed in a sheet shape from an elastic material is sandwiched between the facing plate portion 21b and the lower surface of the bracket 61.

Further, an elastic sleeve 72 formed in a tubular shape from an elastic material is internally fitted in an insertion hole (a hole through which the shaft of the bolt B1 is inserted) formed in the bracket 61, and is provided on the inner peripheral side of the elastic sleeve 72. The shaft of the bolt B1 is arranged.

As described above, in the present embodiment, the elastic sheet 71 and the elastic sleeve 72 are interposed between the member to be fastened 21 and the bracket 61, and the bracket 61 is elastically supported by the member to be fastened 21 (side structure 20). To. That is, the bracket 61 is not in contact with the fastened member 21 and the bolt B1, and a part of the vibration transmission path from the side structure 20 to the bracket 61 is formed only from the elastic material.

As a result, even if the side structure 20 vibrates due to the input of disturbance to the vehicle due to traveling, it is possible to suppress the vibration from being transmitted to the luggage rack 60. That is, it is possible to prevent the luggage rack 60 from becoming a noise oscillation source in the cabin R.

As shown in FIGS. 7 and 8, the upper plate member 62 is formed of a stainless steel flat plate having a rectangular front view, and is fastened and fixed to the holding member 65 (upper plate holding portion 65b) by bolts B2 (FIG. 1 (FIG. 1). b) and FIG. 6). On the other hand, the lower plate member 63 is formed of a corrugated plate made of stainless steel having a rectangular front view, and is held by the cover member 64 and the holding member 65 at positions separated from the upper plate member 62 by a predetermined distance (FIG. FIG. 6 and FIG. 7). As a result, a space S is formed between the upper plate member 62 and the lower plate member 63 facing each other.

The lower plate member 63 is arranged in a posture in which the extending direction (horizontal direction in FIG. 7 and vertical direction on the paper surface in FIG. 8) of the mountaintop (valley bottom) of the corrugated plate is along the vehicle width direction. Further, the lower plate member 63 is formed in a shape in which the peak (valley bottom) of the corrugated plate is curved in an arc shape that is convex toward the upper plate member 62 in the longitudinal direction of the vehicle (see FIG. 5). Further, as described above, the openings 63a of the lower plate member 63 are arranged in a staggered manner in a posture in which the major axis direction is along the vehicle longitudinal direction (see FIG. 1C). As a result, as will be described later, when sound is transmitted between the luggage rack upper space and the luggage rack lower space, relatively high frequency sound is diffusely reflected, and the sound field in the cabin R can be easily made uniform. As a result, the muffled sound in the guest room R can be reduced.

As shown in FIGS. 4 and 7, the cover member 64 is a member for forming a decorative surface at the tip of the luggage rack 60 and holding an outer edge on one end side (right side of FIG. 4) of the lower plate member 63. It is fastened and fixed to an overhanging portion (not shown) at the tip of the bracket 61 in the vehicle longitudinal direction (vertical direction on the paper in FIG. 4).

The upper surface of the cover member 64 is formed as a flat surface that is smoothly connected (that is, flush with each other) to the upper surface of the upper plate member 62, and is prevented from being caught when loading and unloading the load. A holding portion (opposing plate portions 64a and 64b and an erection wall portion 64c) having a U-shaped cross section is formed on the edge portion (left side of FIG. 4) of the portion forming the lower surface of the cover member 64, and the facing plate portion 64a is formed. The outer edge of the lower plate member 63 on one end side is inserted between the faces of 64b. As a result, the outer edge of the lower plate member 63 cannot be seen by passengers, and the appearance can be improved.

In this case, the internal space of the holding portions (opposing plate portions 64a, 64b and the standing wall portion 64c) is set to a size larger than the outer edge of the lower plate member 63, and is formed of an elastic material between the two. An elastic member 73 is interposed. As a result, the outer edge of the lower plate member 63 on one end side is elastically supported by the cover member 64 (bracket 61).

As shown in FIG. 6, the holding member 65 includes a base portion 65a attached to the bracket 61 (rivet-fixed), an upper plate holding portion 65b connected to the base portion 65a (integrated by welding or riveting), and a panel. A holding portion 65c, a lighting holding portion 65d, and a lower plate holding portion 65e formed so as to be detachably (separable) from each of the portions 65a to 65d are provided, and are erected between adjacent brackets 61 facing each other.

The upper plate holding portion 65b is formed so as to project from the base portion 65a toward the tip of the luggage rack 60 so that the upper surface of the projecting portion is substantially flush with the upper surface of the bracket 61. The outer edge of the upper plate member 62 is placed on the upper surface of the upper plate holding portion 65b, and is fastened and fixed by bolts B2.

The panel holding portion 65c is projected from the base portion 65a toward the side structure 20 in a downwardly inclined posture, and the upper end side of the interior panel P1 is disposed at the projecting portion. As a result, the upper end side of the interior panel P1 is elastically supported by the fastened member 21 (side structure 20) via the holding member 65 and the bracket 61. That is, a part of the vibration transmission path from the side structure 20 to the upper end side of the interior panel P1 is formed only from the elastic material (elastic sheet 71 and elastic sleeve 72). As a result, even if the side structure 20 vibrates due to the input of disturbance to the vehicle due to traveling, it is possible to suppress the vibration from being transmitted to the upper end side of the interior panel P1, and the upper end side of the interior panel P1 makes noise in the cabin R. It can be suppressed to become an oscillation source of.

The illumination holding portion 65d includes a horizontal portion extending substantially horizontally from the base portion 65a toward the space S and a folded portion that is folded back from the horizontal portion toward the upper part of the vehicle, and the light irradiating means 66 is arranged in the folded portion. Will be done. As a result, the light irradiation means 66 can be arranged in the space S between the upper plate member 62 and the lower plate member 63. Therefore, since light is irradiated into the vehicle interior R through the openings 62a and 63a of the upper plate member 62 and the lower plate member 63, flicker can be suppressed.

The lower plate holding portion 65e includes an abutting portion 65e1 that comes into contact with the lighting holding portion 65d, an erected wall portion 65e2 that is erected from the abutting portion 65e1 toward the lower side of the vehicle, and the erected wall portion 65e2. An internal space (illumination holding portion 65d) formed by the illumination holding portion 65d and the lower plate holding portion 65e, provided with a horizontal portion of the illumination holding portion 65d and a facing plate portion 65e3 which are arranged to face each other at a predetermined interval. The outer edge of the other end side (left side of FIG. 6) of the lower plate member 63 is inserted into the horizontal portion of the lower plate holding portion 65e and the space surrounded by the standing wall portion 65e2 and the facing plate portion 65e3. As a result, the outer edge of the lower plate member 63 cannot be seen by passengers, and the appearance can be improved.

In this case, the internal space formed by the illumination holding portion 65d and the lower plate holding portion 65e is set to a size larger than the outer edge of the lower plate member 63, and is formed of an elastic material between the two. An elastic member 74 is interposed. As a result, the outer edge of the lower plate member 63 on the other end side is elastically supported by the holding member 65 (bracket 61).

In the present embodiment, the lower plate holding portion 65e is used by using the quick fastener C composed of the clip C1 fixed to the bracket 61 and the stud C2 rotatably held by the contact portion 65e1 of the lower plate holding portion 65e. Is detachably arranged with respect to each portion 65a to 65d of the holding member 65. Therefore, by rotating the stud C2 a predetermined rotation (for example, approximately 1/4 rotation), the coupling with the clip C1 can be released, and the lower plate holding portion 65e can be easily removed, while the lower plate holding portion 65e is attached. In the state, the elastic recovery force of the clip C1 can suppress loosening due to vibration while the vehicle is running.

Further, by removing the lower plate holding portion 65e, it is possible to pull out one end side (right side of FIGS. 4 and 7) of the lower plate member 63 from the holding portion of the cover member 64 (between the facing plates 64a and 64b). Therefore, the lower plate member 63 that covers the lower part of the light irradiation means 66 can be removed. As a result, the light irradiation means 66 can be exposed, so that workability when maintaining the light irradiation means 66 can be improved.

As described above, according to the luggage rack 60 in the present embodiment, a space S is formed between the upper plate member 62 and the lower plate member 63, and a plurality of spaces S are formed in each of the upper plate member 62 and the lower plate member 63. Since the openings 62a and 63a of the above plate member 62 are formed, the opening 62a of the upper plate member 62, the space S and the opening 63a of the lower plate member 63 are used to generate a sound between the upper space of the luggage rack and the lower space of the luggage rack. It can be made transparent. As a result, the sound fields of the luggage rack upper space and the luggage rack lower space can be integrated to reduce the muffled sound in the cabin.

That is, the cabin R is divided into the luggage rack upper space and the luggage rack lower space by the luggage rack 60, so that the luggage rack upper space and the luggage rack can be input by inputting disturbance to the vehicle (side structure 20) due to traveling. When different sound fields are formed in the lower space, sound is transmitted between the upper space of the luggage rack and the lower space of the luggage rack, and the sound fields of the upper space of the luggage rack and the lower space of the luggage rack are integrated. Can be done. As a result, the muffled sound in the guest room R can be reduced.

In this embodiment, the upper plate member 62 and the lower plate member 63 are formed with openings 62a and 63a having the above-mentioned aperture ratios, respectively, and the upper plate member 62 and the lower plate member 63 are provided with openings 62a and 63a. As a result of simulating a comparative example that does not form (that is, the aperture ratio is set to 0%), it was confirmed that in the present embodiment, the muffled sound at about 160 Hz can be reduced by about 3 dB.

In this case, in the luggage rack 60, since the lower plate member 63 is elastically supported by the elastic members 73 and 74 with respect to the bracket 61, sound is transmitted between the luggage rack upper space and the luggage rack lower space. The accompanying vibration of the lower plate member 63 can be suppressed. As a result, it is possible to suppress the vibration of the lower plate member 63 and the generation of radiated sound. Since the lower plate member 63 is located above the passenger's head, it is effective for the passenger's comfort to be able to suppress the vibration (generation of radiated sound) of the lower plate member 63.

Further, in the present embodiment, since the lower plate member 63 is formed of a corrugated plate, when sound is transmitted between the luggage rack upper space and the luggage rack lower space, relatively high frequency sound is diffusely reflected. , The sound field in the guest room can be made uniform and easy. As a result, the muffled sound in the guest room can be reduced. Further, since the lower plate member 63 is elastically supported by the elastic members 73 and 74 with respect to the bracket 61, for example, the lower plate holds the head when the passenger stands up or the hand when the passenger stretches his / her back. When colliding with the member 63, the elastic deformation (buffering action) of the elastic members 73 and 74 can be used to alleviate the impact at the time of collision. Therefore, injuries to the passenger's head and hands can be suppressed.

Further, in the present embodiment, as a structure for transmitting sound between the space above the luggage rack and the space below the luggage rack, the upper plate member 62 having an opening 62a formed in the flat plate is adopted, so that sound can be transmitted. On the other hand, the loading platform surface can be a flat surface (smooth surface). Therefore, according to the present embodiment, for example, a relatively small load can be stably placed as compared with a conventional product in which a plurality of stainless steel pipes are arranged side by side to form a load shelf surface.

Further, in the present embodiment, since the lower plate member 63 is arranged below the upper plate member 62 forming the loading platform surface, when the liquid spills on the upper surface of the upper plate member 62, the liquid is used as the lower plate member. It can be held on the upper surface of the 63 to prevent it from dropping down the luggage rack 60.

Next, the luggage rack 260 according to the second embodiment will be described with reference to FIG. FIG. 9 is a partially enlarged cross-sectional view of the luggage rack 260 according to the second embodiment, and corresponds to FIG. The same parts as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 9, in the luggage rack 260 in the second embodiment, a concave groove 262b is recessed on the upper surface of the upper plate member 262, and a raised wall 262c and a side wall 262d stand from the outer edge of the upper plate member 262. Will be set up.

The concave groove 262b is continuously extended along the outer edges of the four sides of the upper plate member 262. That is, a concave groove 262b that is continuous over the entire circumference is recessed on the upper surface of the upper plate member 262. Therefore, when a liquid spills on the upper surface of the upper plate member 262, the liquid can be accommodated (held) in the concave groove 262b, and the liquid can be prevented from dropping from the outer edge of the upper plate member 262 to the lower side of the luggage rack 260.

The raised wall 262c is erected from the outer edge of the upper plate member 262 on the side structure 20 side (left side in FIG. 9) (that is, the outer edge on the lower end side in the downward inclination of the upper plate member 262), and the side wall 262d is the upper plate member 262. It is erected from the outer edges of the two sides along the vehicle width direction (horizontal direction in FIG. 9) and is connected to the raised wall 262c. As a result, the space surrounded by the raised wall 262c and the side wall 262d can be used as a liquid storage (holding) space. Therefore, the amount of liquid that can be accommodated can be increased by that amount, and the liquid that overflows from the concave groove 262b on the side structure 20 side can be suppressed from dripping downward from the luggage rack 260.

The height dimension of the side wall 262d (the height of the upper plate member 262 standing from the upper surface) is reduced as the distance from the raised wall 262c increases. As a result, it is possible to prevent the side wall 262d from hindering the loading of the load on the loading platform surface while securing the area of the side wall 262d that contributes to the storage (holding) of the liquid.

Further, in the luggage rack 260 in the second embodiment, a plurality of receiving members 280 are arranged in the space S. The receiving member 280 is formed in an elongated shape having a substantially V-shaped cross section, and has a V-shaped open side (recessed side) facing the opening 62a of the upper plate member 262 between adjacent brackets 61. It will be erected.

The receiving member 280 is formed with side walls 280a at both ends in the longitudinal direction, and the open portions at both ends are closed. That is, the receiving member 280 is formed to have a recess in which the upper surface (upper surface in FIG. 9) is open. Therefore, when the liquid spills on the upper surface of the upper plate member 262, the liquid dripping from the opening 62a can be stored (held) in the recess of the member 280 to prevent the liquid from dripping downward from the luggage rack 260.

Next, the luggage rack 360 according to the third embodiment will be described with reference to FIG. FIG. 10 is a partially enlarged cross-sectional view of the luggage rack 360 according to the third embodiment, and corresponds to FIG. 7. The same parts as those of the above-described embodiments are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 10, on the luggage rack 360 in the third embodiment, a surrounding wall 362e is erected from the upper surface of the upper plate member 362. The surrounding wall 362e is a wall portion erected from the periphery of the opening 62a, and is formed in a cylindrical shape (annular cross section) in the present embodiment.

The upper plate member 362 is formed with a concave groove 262b, a raised wall 262c, and a side wall 262d, respectively. Since each of these parts has the same configuration as that of the second embodiment, the description thereof will be omitted.

According to the luggage rack 360 of the third embodiment, the surrounding wall 362e is erected from the upper surface of the upper plate member 362, and the opening 62a is surrounded by the surrounding wall 362e, so that the liquid is liquid on the upper surface of the upper plate member 362. In the case of spillage, the liquid can be suppressed from flowing into the opening 62a, and the liquid can be guided to the raised wall 262c side along the downward inclination of the upper surface of the upper plate member 362. As a result, it is possible to prevent the liquid from dripping downward from the luggage rack 360.

Although the present invention has been described above based on the embodiments, the present invention is not limited to the above-described embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. It can be easily inferred.

The numerical values given in each of the above embodiments are examples, and it is naturally possible to adopt other numerical values. For example, the number of arrangements of the openings 62a and 63a is arbitrary.

However, it is preferable that the opening ratio of the upper plate member 62 is set in the range of about 1% to about 30%, and the opening ratio of the lower plate member 63 is set in the range of about 35% to about 65%. This is because it is effective in reducing the muffled sound in the cabin R caused by the formation of different sound fields in the space above the luggage rack and the space below the luggage rack. In particular, it is preferable that the opening ratio of the lower plate member 63 is set to a value larger than the opening ratio of the upper plate member 62. This is because sound can be transmitted between the luggage rack upper space and the luggage rack lower space, and the sound field between the luggage rack upper space and the luggage rack lower space can be easily integrated.

In each of the above embodiments, the case where the opening 62a is formed as a circular hole in the front view and the opening 63a is formed as a hole in the shape of a long hole in the front view has been described, but the present invention is not limited to this, and each of them is not limited to this. The shape may be adopted. Examples of other shapes include an elliptical shape, a polygonal shape, a bent or curved slit (V-shaped or S-shaped), and the like.

When the opening 62a or the opening 63a is formed as a circular hole when viewed from the front, it is preferable to set the diameter within the range of about 2 mm to about 30 mm while maintaining the above-mentioned aperture ratio. While ensuring the effect of integrating the sound fields of the upper space of the luggage rack and the lower space of the luggage rack, prevention of falling of small items from the loading platform surface into the opening 62a and passenger equipment (light emitted from the light irradiation means 66 or This is because it is possible to reliably transmit the sound (sound generated from the sound generating means described later) to the space under the luggage rack. For the same reason, when the opening 62a or the opening 63a is formed as a hole having an elongated hole shape in front view, the width of the elongated hole is approximately 2 mm to approximately 30 mm and the total length of the elongated hole is omitted while maintaining the above-mentioned aperture ratio. It is preferable to set it within the range of 4 mm to approximately 50 mm.

In each of the above embodiments, the case where the openings 62a are arranged in a grid pattern and the openings 63a are arranged in a staggered pattern has been described, but the present invention is not limited to this, and other arrangements may be adopted. Similarly, the case where the openings 62a and 63a are evenly spaced has been described, but they may be arranged at unequal intervals.

In each of the above embodiments, the case where the lower plate member 63 is formed as a corrugated plate has been described, but the present invention is not limited to this, and the lower plate member 63 may be formed as a flat plate like the upper plate member 62, or other Material may be adopted. Examples of other materials include wire mesh formed by knitting metal wires and cloth-like bodies formed by knitting carbon fibers.

When the lower plate member 63 is formed of a flat plate, a wire net, or a cloth-like body in this way, the rigidity of the lower plate member 63 can be weakened so that the lower plate member 63 itself can be easily deformed. As described above, when a passenger collides with the head or hand against the lower plate member 63, the collision occurs by utilizing the deformation of the lower plate member 63 itself in addition to the elastic deformation (buffering action) of the elastic members 73 and 74. The impact can be mitigated. Therefore, it is possible to more easily suppress injuries to the passenger's head and hands.

In each of the above embodiments, the case where the upper plate members 62, 262, 362 and the lower plate member 63 are arranged to face each other at a predetermined interval and a space S is formed between the facing surfaces has been described. The space S may be made non-formed between the 262 and 362 and the lower plate member 63 in contact with each other. Further, although the case where the luggage racks 60, 260 and 360 include the upper plate members 62, 262 and 362 and the lower plate member 63 has been described, either one may be omitted. Even in these cases, sound can be transmitted between the upper space of the luggage rack and the lower space of the luggage rack, so that the sound fields of the upper space of the luggage rack and the lower space of the luggage rack are integrated, and the room R is filled with sound. Sound can be reduced.

In each of the above embodiments, it has been described that the elastic sheet 71, the elastic sleeve 72, and the elastic members 73, 74 are formed of the elastic material. Examples of the elastic material include a rubber-like elastic body, urethane, and a metal spring (for example, a leaf spring or a coil spring). However, it is preferable to use a viscoelastic material typified by a rubber-like elastic body or urethane. This is because the vibration insulation effect and the vibration damping effect can be more exerted.

In each of the above embodiments, the case where the light irradiation means 66 is arranged in the space S of the luggage racks 60, 260, 360 has been described, but the present invention is not necessarily limited to this, and instead of or in addition to this. Other passenger facilities may be provided. Examples of other passenger facilities include voice generating means (speakers).

In the second embodiment, the case where the receiving member 280 is formed in a substantially V-shaped cross section has been described, but the present invention is not limited to this, and other shapes may be adopted. Examples of other shapes include a C-shaped cross section and a U-shaped cross section. That is, any shape can be adopted as long as it has a concave portion that becomes concave downward and can hold the liquid in the concave portion.

In the second embodiment, the case where the lower surface of the upper plate member 262 is formed as a flat surface has been described, but the present invention is not necessarily limited to this, and for example, from the lower surface of the upper plate member 262 toward the receiving member 280. A surrounding wall (a tubular wall portion erected from around the opening 62a) may be erected. For example, in the second embodiment, when the liquid spilled on the upper surface of the upper plate member 262 flows into the opening 62a, the liquid propagates on the lower surface of the upper plate member 262 and drops from the region where the receiving member 280 is not faced. By standing the surrounding wall toward the member 280, the liquid flowing into the opening 62a can be easily dropped onto the member 280.

100 Railroad vehicle 20 side structure 60, 260, 360 luggage rack (railroad vehicle luggage rack)
61 Bracket 62,262,362 Upper plate member 62a Opening 63 Lower plate member 63a Opening 71 Elastic sheet (second interposition member)
72 Elastic sleeve (second interposition member)
73,74 Elastic member (first interposition member)
280 receiving member (holding means)
R guest room S space

Claims (4)

In a railroad vehicle luggage rack that protrudes from the side structure of the railroad vehicle toward the inside of the passenger compartment and is arranged on both the left and right sides of the upper part of the passenger compartment and whose upper surface is the loading platform surface.
A bracket whose base end side is attached to the side structure and a plurality of brackets are arranged at intervals in the longitudinal direction of the vehicle.
An upper plate member erected between the plurality of brackets to form the upper surface, and
A lower plate member erected between the plurality of brackets and forming a lower surface opposite to the upper surface,
A first interposition member formed of an elastic material and interposed between the bracket and the lower plate member is provided.
A space is formed between the upper plate member and the lower plate member, and a plurality of openings are formed in each of the upper plate member and the lower plate member.
The lower surface of the outer edge of the upper plate member on the vehicle longitudinal direction side is directly supported by the upper surface of the bracket.
Nitana for railway vehicles, characterized in that the said lower plate member by the first interposition member is elastically supported relative to the bracket. In a railroad vehicle luggage rack that protrudes from the side structure of the railroad vehicle toward the inside of the passenger compartment and is arranged on both the left and right sides of the upper part of the passenger compartment and whose upper surface is the loading platform
A bracket whose base end side is attached to the side structure and a plurality of brackets are arranged at intervals in the longitudinal direction of the vehicle.
An upper plate member erected between the plurality of brackets to form the upper surface, and
It is provided with a lower plate member erected between the plurality of brackets and forming a lower surface opposite to the upper surface.
A space is formed between the upper plate member and the lower plate member, and a plurality of openings are formed in each of the upper plate member and the lower plate member.
The upper plate member is formed in a flat plate shape.
The lower plate member is a luggage rack for railroad vehicles, characterized in that it is formed in a corrugated shape. In a railroad vehicle luggage rack that protrudes from the side structure of the railroad vehicle toward the inside of the passenger compartment and is arranged on both the left and right sides of the upper part of the passenger compartment and whose upper surface is the loading platform surface.
A bracket whose base end side is attached to the side structure and a plurality of brackets are arranged at intervals in the longitudinal direction of the vehicle.
An upper plate member erected between the plurality of brackets to form the upper surface, and
A lower plate member erected between the plurality of brackets and forming a lower surface opposite to the upper surface,
A second interposition member formed of an elastic material and interposed between the side structure and the bracket is provided.
A space is formed between the upper plate member and the lower plate member, and a plurality of openings are formed in each of the upper plate member and the lower plate member.
A railroad vehicle luggage rack characterized in that the bracket is elastically supported by the second interposition member with respect to the side structure. In a railroad vehicle luggage rack that protrudes from the side structure of the railroad vehicle toward the inside of the passenger compartment and is arranged on both the left and right sides of the upper part of the passenger compartment and whose upper surface is the loading platform
A bracket whose base end side is attached to the side structure and a plurality of brackets are arranged at intervals in the longitudinal direction of the vehicle.
An upper plate member erected between the plurality of brackets to form the upper surface and a plurality of openings to be formed.
With a lower plate member erected between the plurality of brackets to form a lower surface opposite to the upper surface and a plurality of openings are formed to form a space between the upper plate member and the lower plate member. ,
It has a recess with an open upper surface and is disposed between the upper plate member and the lower plate member in a posture in which the upper surface of the recess faces the opening of the upper plate member, so that liquid can be held in the recess. A luggage rack for railroad vehicles, characterized in that it comprises a holding means formed.

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