Combined structure of the hanging rod

Abstract

To provide coupling structure of a hanger rod which can restrain a stationary portion of a hanger rod and a receiving member from breaking down.SOLUTION: Coupling structure 11 of a hanger rod is structure which is disposed inside a room of a vehicle and is configured such that a receiving member 14 on a vehicle side is fixed on a second hanger rod 13 and at the same time a buckle 26 which restricts displacement to a second direction of the second hanger rod 13 is fixed. A first hanger rod 12 is fixed to a joint member in such a condition as to insert through the joint member on a coupling portion of the first hanger rod 12 and the second hanger rod 13 by the coupling member. The second hanger rod 13 is inserted into the joint member in such a condition as to oppose the buckle 26 to a wall part 15a of the joint member and is configured as non-fixation to the joint member.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present disclosure relates to a coupling structure of a handrail.

Background Art

[0002] For example, in the passenger compartment of a vehicle such as a railway vehicle, a handrail bar is arranged with a plurality of handrails for passengers to grasp at regular intervals. In many cases, in the passenger compartment, a handrail bar extending in the longitudinal direction of the vehicle and a handrail bar extending in the width direction of the vehicle are arranged in combination. At the position where these handrail bars intersect, the handrail bars are coupled to each other using a joint member. For example, in the interior structure of a railway vehicle described in Patent Document 1, a handrail bar extending in the longitudinal direction of the vehicle and a handrail bar (interior bar) extending in the width direction of the vehicle are coupled using a cross joint. The cross joint is fixed to each handrail bar by a fixing member such as a screw.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the handrail bar as described above, a certain load may be applied downward when passengers directly grasp the handrail bar or grasp the handrail attached to the handrail bar. For example, when a downward load is applied to a handrail bar extending in the longitudinal direction of the vehicle, a moment around the axis may be generated in the handrail bar extending in the width direction of the vehicle via the joint member due to the load. In the second handrail bar extending in the width direction of the vehicle, the end opposite to the end coupled to the joint member may be fixed to a receiving member provided on the vehicle side, for example. In this case, if the shear force generated by the moment around the axis exceeds the allowable stress of the fixing member such as a screw, it is conceivable that the fixed portion between the handrail bar and the receiving member may be damaged.

[0005] The present disclosure has been made to solve the above problems, and an object thereof is to provide a coupling structure of a hanging bar that can prevent damage to a fixed portion between the hanging bar and a receiving member.

Means for Solving the Problems

[0006] The coupling structure of a hanging bar according to one aspect of the present disclosure is a coupling structure of a hanging bar disposed in the interior of a vehicle, and includes a first hanging bar extending in a first direction, a second hanging bar extending in a second direction intersecting the first direction, and a joint member that couples the first hanging bar and the second hanging bar. A receiving member on the vehicle side is fixed to the second hanging bar, and a fastener that restricts displacement of the second hanging bar in the second direction is fixed. At the coupling portion of the first hanging bar and the second hanging bar by the joint member, the first hanging bar is fixed to the joint member in a state of passing through the joint member, and the second hanging bar is inserted into the joint member in a state where the fastener faces the joint member and is not fixed to the joint member.

[0007] In this coupling structure of the hanging bar, the first hanging bar is fixed to the joint member. Further, the second hanging bar is not fixed to the joint member while its displacement in the second direction is restricted by the fastener. In this coupling structure of the hanging bar, displacement around the axis of the second hanging bar with respect to the joint member is allowed. Therefore, even when a downward load is applied to the first hanging bar, it is possible to suppress the shear force caused by the load from being applied to the fixed portion between the second hanging bar and the receiving member. Accordingly, damage to the fixed portion between the second hanging bar and the receiving member can be suppressed.

[0008] The fastener may be abutted against the joint member. In this case, the displacement of the second hanging bar in the second direction can be more reliably restricted by the fastener.

[0009] The fastener may have an arcuate cross-section and may be fixed to the upper side of the outer peripheral surface of the second hanging rod. In this case, since the fastener can be easily arranged on the outer peripheral surface of the second hanging rod, the assemblability of the connecting structure of the hanging rod can be improved. Further, by fixing the fastener to the upper side of the outer peripheral surface, the fastener becomes less conspicuous in the interior of the vehicle, and the aesthetics of the interior can be maintained.

[0010] The fastener may be fixed to the upper side of the outer peripheral surface of the second hanging rod with a phase angle range of 30° or more and less than 180°. By setting the phase angle range of the fastener to 30° or more, a sufficient area for providing a fixing member such as a screw can be formed on the fastener. Further, since the size of the fastener can be ensured, the fastener becomes easy to handle, and the assemblability of the connecting structure of the hanging rod can be improved. By setting the phase angle range of the fastener to less than 180°, it becomes possible to place and arrange the fastener on the outer peripheral surface of the second hanging rod. This also contributes to the improvement of the assemblability of the connecting structure of the hanging rod.

[0011] The fastener may have an annular cross-section with a hollow interior, and the second hanging rod may be fitted and fixed therein. In this case, by making the fastener have an annular cross-section with a hollow interior, a certain strength can be ensured, so the selectivity of the material constituting the fastener can be expanded. Further, since a sense of unity between the fastener and the joint member can be created, the aesthetics of the interior can be maintained.

[0012] The thickness of the fastener may be equal to the thickness of the wall portion of the joint member. In this case, since a sense of unity between the fastener and the joint member can be further enhanced, the aesthetics of the interior can be more reliably maintained.

[0013] The joint member is a cross joint, and the second hanging rod may be inserted into the cross joint such that the cross joint is clamped by the fastener. According to such a configuration, the displacement of the second hanging rod in the second direction can be more reliably restricted by clamping the cross joint using the fastener.

Advantages of the Invention

[0014] According to the present disclosure, breakage of the fixed portion between the hanging rod and the receiving member can be suppressed.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Embodiments for Carrying Out the Invention

[0016] Hereinafter, with reference to the drawings, a preferred embodiment of a coupling structure of a hanging handrail according to one aspect of the present disclosure will be described in detail. [Example of a vehicle to which the coupling structure of the hanging handrail is applied]

[0017] FIG. 1 is a schematic cross-sectional view showing an example of a vehicle to which a coupling structure of a hanging handrail according to an embodiment of the present disclosure is applied. Further, FIG. 2 is a schematic plan view of a part of the interior of the vehicle shown in FIG. 1 as viewed from above. As shown in the figure, the coupling structure 11 of the hanging handrail is disposed, for example, in the passenger compartment S of a stainless steel railway vehicle (vehicle) 1 with four doors on one side. The railway vehicle 1 is formed by joining a floor structure 2, left and right side structures 3, 3, a ceiling structure 4, and a sill structure (not shown) to each other, and has a box shape.

[0018] The floor structure 2 is arranged at the bottom of the railway vehicle 1 as a structure constituting the floor part of the vehicle. The left and right side structures 3, 3 and the crossbeam structure are erected so as to surround the left and right edges and the front and rear edges of the floor structure 2 as structures constituting the side parts of the vehicle. A plurality (here, four) of doors are provided at equal intervals on each of the left and right side structures 3, 3. Further, window parts are provided on each of the left and right side structures 3, 3 alternately with the doors. A through passage for passengers and crew to come and go between vehicles is provided in the crossbeam structure. The ceiling structure 4 is arranged above the railway vehicle 1 as a structure constituting the roof part of the vehicle. An air conditioner for adjusting the temperature inside the vehicle, a pantograph, etc. are installed in the ceiling structure 4.

[0019] In the passenger compartment S, seats 5, luggage racks 6, handrails 7, etc. are arranged. The seat 5 is a member provided for passengers to sit on. In the present embodiment, the seats 5 are arranged seven on each side along the respective left and right side walls in the space between the doors (see FIG. 2). Sleeve partitions 8 are provided at both ends of the seat 5 so that the passengers sitting on the seat 5 and the passengers getting on and off passing near the door are separated.

[0020] The luggage rack 6 is a member for placing luggage and the like. The luggage rack 6 is arranged, for example, above the left and right seats 5. The luggage rack 6 is formed of, for example, a metal such as aluminum or an aluminum alloy, or glass. The luggage rack 6 may be constituted by a framework such as a plurality of rod-shaped members, or may be constituted in a flat plate shape.

[0021] The hanging grip 7 is a member provided for standing passengers to hold. When installing the hanging grip 7, a hanging grip bar is provided in the passenger compartment S. In the example of FIG. 2, a first hanging grip bar 12 extending in the front-rear direction (the first direction) of the railway vehicle 1 and a second hanging grip bar 13 extending in the width direction (the second direction) of the railway vehicle 1 are provided. The first hanging grip bar 12 and the second hanging grip bar 13 are formed in a pipe shape with a circular cross-section by a metal such as stainless steel, for example. The first hanging grip bar 12 and the second hanging grip bar 13 are held at a position slightly above the luggage rack 6 by a receiving member 14 hanging from the ceiling structure 4, for example.

[0022] In the present embodiment, as shown in FIG. 2, the first hanging grip bar 12 and the second hanging grip bar 13 are arranged at a predetermined interval in the space between the left and right seats 5, 5 in a plan view of the passenger compartment S. In the example of FIG. 2, three first hanging grip bars 12 are arranged at the center in the width direction of the railway vehicle 1 and on both sides thereof. A plurality of second hanging grip bars 13 are arranged at a constant interval in the front-rear direction of the railway vehicle 1 so as to connect each of the three first hanging grip bars 12. There is no particular limitation on the arrangement interval of the second hanging grip bars 13, but here, the arrangement interval is smaller than the interval between the doors.

[0023] The hanging grip 7 is installed on the first hanging grip bar 12 among the first hanging grip bar 12 and the second hanging grip bar 13. In the example of FIG. 2, in each of the three first hanging grip bars 12, six hanging grips 7 are installed at a predetermined interval between the second hanging grip bars 13, 13. In the present embodiment, the coupling structure 11 of the hanging grip bar is applied to the coupling portion between the first hanging grip bar 12A arranged at the center in the width direction of the railway vehicle 1 and the second hanging grip bar 13 orthogonal to the first hanging grip bar 12A. Hereinafter, the configuration of the coupling structure 11 of the hanging grip bar will be described in detail. [First Embodiment of the Coupling Structure of the Hanging Grip Bar]

[0024] FIG. 3 is a plan view showing the coupling structure of the hanging bar according to the first embodiment. FIG. 4 is a side view of FIG. 3, and FIG. 5 is a cross-sectional view taken along line V-V in FIG. 4. As shown in FIGS. 3 to 5, the coupling structure 11A of the hanging bar according to the first embodiment is composed of the above-described first hanging bars 12A, 12A and the second hanging bar 13, and a cross joint (joint member) 15.

[0025] The cross joint 15 is formed of, for example, an aluminum casting. The cross joint 15 is provided with a through hole 21 extending in one direction and through holes 22 provided so as to face each other in a direction orthogonal to the one direction. The first hanging bars 12A, 12A are inserted into the through hole 21 from the direction in which they face each other, and are fixed to the cross joint 15 by screws 20. Inside the through hole 21, the tips of the first hanging bars 12A, 12A are separated from each other with a gap larger than the diameter of the through hole 22.

[0026] When fixing to the cross joint 15, as shown in FIG. 6, the above-described receiving member 14 is fixed to one end side of the second hanging bar 13. The lower end portion of the receiving member 14 is provided with a through hole 23 extending in one direction and a bottomed cylindrical insertion hole 24 provided in a direction orthogonal to the one direction. One of the first hanging bars 12B (see FIG. 2) located on both sides of the first hanging bar 12A is inserted through the through hole 23. The first hanging bar 12B is fixed to the receiving member 14 by a screw (not shown) in a state of passing through the through hole 23. One end side of the second hanging bar 13 is inserted into the insertion hole 24. One end side of the second hanging bar 13 is fixed to the receiving member 14 by a screw 25. In FIG. 6, one end side of the second hanging bar 13 is shown, but the other end side of the second hanging bar 13 has the same configuration.

[0027] As shown in FIGS. 3 to 5, two fasteners 26A are fixed to the middle portion of the second hanging rod 13. The fastener 26A is a member that restricts the displacement of the railway vehicle 1 in the width direction in the second hanging rod 13. In the present embodiment, the fastener 26A is formed in an arc shape in cross section, for example, by stainless steel. The inner peripheral shape of the fastener 26A is a curved shape corresponding to the shape of the outer peripheral surface 13a of the second hanging rod 13. The fastener 26A is placed on the upper side of the outer peripheral surface 13a of the middle portion of the second hanging rod 13 without a gap, and is fixed to the middle portion of the second hanging rod 13 by screws 27 (see FIGS. 3 and 5).

[0028] As shown in FIG. 5, when viewed from the axial direction of the second hanging rod 13, the fastener 26A is fixed to the upper side of the outer peripheral surface 13a of the second hanging rod 13 with a phase angle θ in the range of 30° or more and less than 180°. Here, the range of the phase angle θ is 90°, and the fastener 26A is fixed to the upper side of the outer peripheral surface 13a so as to cover 1 / 4 of the outer peripheral surface 13a on the other end side of the second hanging rod 13.

[0029] As shown in FIGS. 4 and 5, the thickness of the fastener 26A is smaller than the thickness of the wall portion (the wall portion constituting the through hole 22) 15a of the cross joint 15. On the other hand, the thickness of the fastener 26A is preferably such that, for example, the flat head of the screw 27 does not protrude from the outer surface of the fastener 26A. For example, when an M4 round head screw is used as the screw 27, by setting the thickness of the fastener 26A to 2.5 mm or more, the protrusion of the flat head can be reliably avoided. Further, by setting the thickness of the fastener 26A to 3 mm or more, the flat head can be more beautifully buried in the fastener 26A. Also, when an M4 round head screw is used as the screw 27, it is preferable to set the thickness of the second hanging rod 13 to 3 mm or more.

[0030] The middle part of the second hanging rod 13 is inserted into the through hole 22 with the fastener 26A facing the cross joint 15. The fastener 26A may be abutted against the cross joint 15. In the present embodiment, the joint member is the cross joint 15, and as shown in FIGS. 3 and 4, the middle part of the second hanging rod 13 is inserted into the through hole 22 so that the cross joint 15 is clamped by the fasteners 26A, 26A. Different from the first hanging rod 12, the middle part of the second hanging rod 13 is not fixed to the cross joint 15. Therefore, in the second hanging rod 13, the displacement in the width direction of the railway vehicle 1 is restricted by the fastener 26A, but the displacement around the axis of the second hanging rod 13 is allowed at the middle part of the second hanging rod 13.

[0031] In the coupling structure 11A of the hanging rod having the above configuration, since the displacement around the axis of the second hanging rod 13 with respect to the cross joint 15 is allowed, even when a downward load is applied to the first hanging rod 12A when passengers directly grasp the first hanging rod 12A or grasp the hanging handle 7 attached to the first hanging rod 12A, it is possible to suppress the shear force caused by the load from being applied to the fixed portion (screw 25: see FIG. 6) between one end side of the second hanging rod 13 and the receiving member 14. Therefore, breakage of the fixed portion between the second hanging rod 13 and the receiving member 14 can be suppressed.

[0032] In the present embodiment, the fastener 26A is abutted against the cross joint 15. Thereby, the displacement of the second hanging rod 13 in the width direction of the railway vehicle 1 can be more reliably restricted by the fastener 26A.

[0033] In the present embodiment, the fastener 26A has a circular arc-shaped cross section and is fixed to the upper side of the outer peripheral surface 13a of the second hanging rod 13. According to such a configuration, since the fastener 26A can be easily arranged with respect to the outer peripheral surface 13a of the second hanging rod 13, the assembly workability of the coupling structure 11A of the hanging rod can be improved. Further, by fixing the fastener 26A to the upper side of the outer peripheral surface 13a, the fastener 26A is less conspicuous in the passenger compartment S of the railway vehicle 1, and the aesthetics in the passenger compartment S can be maintained.

[0034] In this embodiment, the fastener 26A is fixed to the upper side of the outer peripheral surface 13a of the second hanging rod 13 with a phase angle θ in the range of 30° or more and less than 180°. By setting the range of the phase angle θ of the fastener 26A to 30° or more, a sufficient area for providing the screw 27 can be formed on the fastener 26A. Also, since the size of the fastener 26A can be ensured, the fastener 26A becomes easy to handle, and the assembly workability of the coupling structure 11A of the hanging rod can be improved. By setting the range of the phase angle θ of the fastener 26A to less than 180°, it becomes possible to place and arrange the fastener 26A on the outer peripheral surface 13a of the second hanging rod 13. This also contributes to the improvement of the assembly workability of the coupling structure 11A of the hanging rod.

[0035] In this embodiment, the joint member is the cross joint 15, and the second hanging rod 13 is inserted into the cross joint 15 such that the cross joint 15 is clamped by the fasteners 26A, 26A. According to such a configuration, by clamping the cross joint 15 using the fasteners 26A, 26A, the displacement of the second hanging rod 13 in the width direction of the railway vehicle 1 can be more reliably restricted. [Second Embodiment of the Coupling Structure of the Hanging Rod]

[0036] FIG. 7 is a plan view showing the coupling structure of the hanging rod according to the second embodiment. FIG. 8 is a side view of FIG. 7, and FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. 8. As shown in FIGS. 3 to 5, in the coupling structure 11B of the hanging rod according to the second embodiment, the configuration of the fastener 26B is different from that of the coupling structure 11A of the hanging rod according to the first embodiment. Regarding other configurations, they are the same as those in the first embodiment.

[0037] Specifically, in the coupling structure 11B of the hanging rod, the two fasteners 26B form an annular shape with a hollow cross-section, for example, by an aluminum casting. The inner diameter of the fastener 26B matches the outer diameter of the second hanging rod 13. The middle portion of the second hanging rod 13 is fitted into the fastener 26B and is fixed to the middle portion of the second hanging rod 13 by a screw 27 (see FIGS. 7 and 9).

[0038] Also, as shown in FIGS. 8 and 9, the thickness of the fastener 26B is equal to the thickness of the wall portion (the wall portion constituting the through hole 22) 15a of the cross joint 15. As shown in FIGS. 7 and 8, the other end side of the second hanging rod 13 is inserted into the through hole 22 of the cross joint 15 so that the cross joint 15 is clamped by the fasteners 26B, 26B. Therefore, the fasteners 26B, 26B are continuous with the wall portion 15a of the cross joint 15 without a step, and apparently form a member integral with the cross joint 15.

[0039] Also in the coupling structure 11B of the hanging rod as described above, since displacement around the axis of the second hanging rod 13 with respect to the cross joint 15 is allowed, even when a downward load is applied to the first hanging rod 12A by passengers directly grasping the first hanging rod 12A or grasping the hanging handle 7 attached to the first hanging rod 12A, it is possible to suppress the shear force caused by the load from being applied to the fixed portion (screw 27) between one end side of the second hanging rod 13 and the receiving member 14. Therefore, breakage of the fixed portion between the second hanging rod 13 and the receiving member 14 can be suppressed.

[0040] Also in this embodiment, the fastener 26B abuts against the cross joint 15. Thereby, displacement of the second hanging rod 13 in the width direction of the railway vehicle 1 can be more reliably restricted by the fastener 26B.

[0041] In this embodiment, the fastener 26B has an annular cross-section with a hollow interior, and the intermediate portion of the second hanging rod 13 is fitted and fixed therein. According to such a configuration, since a certain strength can be ensured by forming the fastener 26B into an annular shape with a hollow cross-section, the selectivity of the material constituting the fastener 26B can be expanded. For example, in this embodiment, the fastener 26B is formed of an aluminum casting like the cross joint 15, and the weight of the coupling structure 11B of the hanging rod is reduced. In addition, since a sense of unity between the fastener 26B and the cross joint 15 can be created, the aesthetics inside the passenger compartment S can be maintained. In this embodiment, the thickness of the fastener 26B is equal to the thickness of the wall portion 15a of the cross joint 15. Thereby, a sense of unity between the fastener 26B and the cross joint 15 can be further enhanced, and the aesthetics inside the passenger compartment S can be more reliably maintained. [Modification Example]

[0042] The present disclosure is not limited to the above embodiments. For example, in each of the above embodiments, the fasteners 26A and 26B are both abutted against the wall portion 15a of the cross joint 15, but a mode in which there is a slight gap between the fasteners 26A and 26B and the cross joint 15 may also be adopted. Further, in each of the above embodiments, the first hanging bars 12A and 12A are inserted into the through hole 21 of the cross joint 15 so as to face each other, and the middle portion of the second hanging bar 13 penetrates through the through hole 22 of the cross joint 15. On the contrary, the middle portion of the first hanging bar 12A may penetrate through the through hole 21 of the cross joint 15, and the second hanging bars 13 and 13 may be inserted into the through hole 22 of the cross joint 15 so as to face each other.

[0043] In the first embodiment, the fastener 26A is fixed to the upper side of the outer peripheral surface 13a on the other end side of the second hanging bar 13, but the fixing position of the fastener 26A on the outer peripheral surface 13a may be any position other than the upper side. The thickness of the fastener 26A may be equal to the thickness of the wall portion 15a of the cross joint 15. In the second embodiment, the thickness of the fastener 26B may be smaller than the thickness of the wall portion 15a of the cross joint 15. Further, in each of the above embodiments, the cross joint 15 is exemplified as the joint member, but the coupling structure of the hanging bar according to the present disclosure is also applicable when a T-shaped joint having an insertion hole into which the second hanging bar 13 is inserted provided only on one side with respect to the through hole 21 is used as the joint member.

Explanation of Reference Numerals

[0044] 1... Railway vehicle (vehicle), 11 (11A, 11B)... Coupling structure of hanging bar, 12 (12A, 12B)... First hanging bar, 13... Second hanging bar, 13a... Outer peripheral surface, 14... Receiving member, 15... Cross joint (joint member), 15a... Wall portion, 26A, 26B... Fastener.

Claims

1. A coupling structure of a grab bar disposed in the interior of a vehicle, comprising: a first grab bar extending in a first direction; a second grab bar extending in a second direction intersecting the first direction; a joint member coupling the first grab bar and the second grab bar, wherein a receiving member on the vehicle side is fixed to the second grab bar, and a fastener for restricting displacement of the second grab bar in the second direction is fixed thereto; at a coupling portion of the first grab bar and the second grab bar by the joint member, the first grab bar is fixed to the joint member with the joint member inserted therethrough; the second grab bar is inserted into the joint member with the fastener facing the joint member, and is not fixed to the joint member. A coupling structure of a grab bar.

2. The coupling structure of a grab bar according to claim 1, wherein the fastener abuts against the joint member.

3. The coupling structure of a grab bar according to claim 1 or 2, wherein the fastener has a cross-sectional arc shape and is fixed to the upper side of the outer peripheral surface of the second grab bar.

4. The coupling structure of a grab bar according to claim 3, wherein the fastener is fixed to the upper side of the outer peripheral surface of the second grab bar with a phase angle range of 30° or more and less than 180°.

5. The coupling structure of a grab bar according to claim 1 or 2, wherein the fastener has a hollow annular cross-section, and the second grab bar is fitted and fixed therein.

6. The coupling structure of a grab bar according to any one of claims 1 to 5, wherein the thickness of the fastener is equal to the thickness of the wall portion of the joint member.

7. The joint member is a cross joint, and the coupling structure of a grab bar according to any one of claims 1 to 6, wherein the second grab bar is inserted into the cross joint such that the cross joint is clamped by the fastener.

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