JPH0611847Y2 - Railway vehicle electric wire duct structure - Google Patents

Description

[Detailed Description of the Invention] [Industrial application] The present invention relates to an electric wire duct structure for a railway vehicle, and more particularly to an electric wire duct structure for a railway vehicle that is suitable to be installed under the floor under the underframe. .

[Conventional technology]

Conventionally, the electric wire duct structure provided under the floor of the railway vehicle is
For example, as shown in Japanese Patent Publication No. 47-2642, it has a structure in which a box-shaped electric wire duct formed in advance by welding and screw fastening work is fixed to an underframe cross beam with bolts.

[Problems to be solved by the invention]

In the above conventional technology, when attaching the electric wire duct to the underframe,
It must be fixed with bolts, there are many operations such as drilling, screw cutting, screw tightening, and a lot of man-hours are required.
Further, since the electric wire duct is formed by welding, screw fastening, etc., there is a problem that it takes a lot of man-hours because the workability during its production is not sufficiently considered.

An object of the present invention is to provide an electric wire duct structure for a railway vehicle which has a simple structure and can be easily mounted.

[Means for solving problems]

The present invention provides an electric wire duct structure for a railway vehicle, comprising: a duct receiver formed on a lower surface of an underframe; and a duct main body which is engaged with the duct receiver and is drawn through in a longitudinal direction of the underframe. The receivers are arranged parallel to each other with an interval matched with the width dimension of the duct body, the longitudinal direction thereof being arranged along the longitudinal direction of the underframe, and the tip of each duct receiver is formed in a hook shape. In addition, each hook-shaped tip is arranged so as to be directed outward in the width direction of the underframe, and further, the slope at which the interval between the hook-shaped tip portion of the duct receiver and the underside of the underframe becomes narrower toward the outside in the width direction of the underframe. The duct main body comprises a pair of duct side plates forming a duct side surface and a duct bottom plate forming a duct lower surface, and the pair of duct side plates each have a hooking portion that engages with the duct receiver. Formed A hooking surface along the inclined surface of the duct receiver is formed on the hooking portion, and a hooking inclined surface that is substantially parallel to the tilted surface of the duct receiver and has a gap between the lower surface of the underframe is formed on the back surface of the hook receiving surface. , A duct presser for fixing the engaging part of each of the duct side plates to the hook-shaped tip part of the duct receiver, and one end of the duct presser that is in contact with the engaging inclined face of the engaging part of the duct side plate and It is characterized in that a sliding surface which comes into contact with the lower surface of the underframe is formed, and a fixing means for moving in the underframe width direction with respect to the duct side plate is provided at the other end of the duct retainer.

[Action]

In a state in which the duct side plate is engaged with the duct receiver, the duct retainer is moved to both sides in the width direction of the underframe by the fixing means so that the inclined surface of the duct retainer presses the engaging portion of the duct side plate against the duct retainer. The side plate can be fixed to the duct receiver. Therefore, the duct body can be fixed to the underframe simply by operating the fixing member in a state where the duct side plate is engaged with the duct receiver, and the work can be easily performed. Further, each constituent member itself can be configured by one having a relatively simple structure.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. In the figure, the electric wire duct is composed of a duct side plate 3, a duct bottom plate 4 and a cleat 9, and a duct side plate 3 and a duct receiver 2 provided on the lower surface of the underframe 1 are engaged to form a snap-in structure. That is, the duct receiver 2
Is formed in a hook shape, and each hook-shaped tip portion of the pair of the duct receivers 2 is installed facing outward in the width direction of the underframe. The duct receiver 2 is a light alloy extruded mold member and is integrally formed with the underframe. Further, an inclined surface 2a is formed at the hook-shaped tip of the duct receiver 2 so that the distance between the lower surface of the underframe and the underside of the underframe becomes narrower toward the outside in the width direction of the underframe. On the upper end of the duct side plate 3, a hooking portion 3a that hooks on the hook-shaped tip of the duct receiver 2 is formed. The engaging portion 3a has an engaging surface 3b extending along the inclined surface 2a of the duct receiver 2 and a rear surface of the engaging surface 3b having a gap substantially parallel to the inclined surface 2a of the duct receiver 2 and a lower surface of the underframe. The engaging slanted surface 3c is formed.

The duct receiver 2 and the duct side plate 3 are fixed by the duct retainer 5
Done by. The duct retainer 5 has an L-shaped cross section, and has an inclined surface 5a that contacts the engaging inclined surface 3c of the duct side plate 3 at one end that is the top of the L-shape and that contacts the lower surface of the underframe. It constitutes the sliding surface 5b. Further, a screw hole is provided at the other end of the duct retainer 5 which is an L-shaped lower side portion, and a retainer bolt 7 having a lock nut on the outside is provided as a fixing means.

With such a configuration, the duct main body including the pair of duct side plates 3 and the duct bottom plate 4 can be supported in a state where the engaging portion 3a of the duct side plate 3 is engaged with the hook-shaped tip of the duct receiver 2. Therefore, when fixing the duct side plate 3 to the duct receiver 2, as described above, the engaging portion 3a is used.
The inclined surface 5a of the duct retainer 5 pushes the engaging inclined surface 3c of the engaging portion 3a only by turning the retaining bolt 7 in a state in which the engaging portion is engaged with the hook-shaped tip, and the engaging portion 3a of the duct receiver 2 is pushed. It can be pressed and fixed to the hook-shaped tip. As described above, the fixing work only needs to be performed by turning the pressing bolt 7, and the work can be easily performed.

A contact plate 8 is provided between the duct side plate 3 and the duct retainer 5 so as to receive the retainer bolt 7. The contact plate 8 is provided with a non-penetrating hole at a portion for receiving the holding bolt 7 in order to prevent the contact plate 8 from falling off. Then, by tightening the presser bolt, the duct side plate 3 is pressed through the contact plate 8 and the inclined portion of the duct side plate 3 and the inclined surface of the duct presser 5 are pressed against each other, and the upper surface of the duct presser 5 is the lower surface of the underframe 1. The duct side plate 3 is fixed to the duct receiver 2, and at the same time, it is prevented from loosening because it cannot escape. If the width of the duct retainer 5 is small, a force is locally applied to the inclined portion of the duct side plate 3, so that the duct retainer 5 has an appropriate length. Then, two pressing bolts 7 are provided for one duct pressing 5 to prevent the contact plate 8 from being displaced by rotation. Although the duct retainer 5 alone is sufficient to prevent it from coming off, a through bolt 6 is inserted between both duct side plates 3 for backup. The backup through bolt 6 can also be used for work. The through-bolt 6 has one inner portion fixed, and the other inner portion,
Stop with a nut outside. As a result, one duct side plate 3
The other side of the through bolt 6
By pulling the tip of the duct, the space between the duct side plates 3 is temporarily expanded, and the work of engaging the duct receiver 2 and the duct side plate 3 is facilitated. In addition, the engaging work is performed through the through bolt 6
Needless to say, the operation is performed with the nuts at both ends of the. Further, the duct retainer 5 and the backup through bolt 6 are attached at an appropriate pitch with respect to the entire length of the duct. The duct retainer 5 is attached from the end, or a notch for insertion is provided in the middle of the duct side plate 3 and fed to a predetermined position along the inclined portion. Also, since the lower portion of the duct side plate 3 and the upper portion of the duct bottom plate 4 have a snap-in structure, the engaging portion between the duct side plate 3 and the duct bottom plate 4 can be easily fixed by the same procedure as described above.

According to such a configuration, the duct side plate 3 is engaged with the duct receiver 2, the duct retainer 5 is also inserted, and the retainer bolt 7 is tightened to complete the attachment of the duct to the underframe. Therefore, it is not necessary to perform complicated alignment and the like, and it is not necessary to work upward, and workability can be greatly improved. Furthermore, the configuration of each member is simple, and especially the duct itself also adopts the snap-in structure to facilitate manufacture.

[Effect of device]

As described above, according to the present invention, the structure can be simplified and the mounting work to the vehicle body, that is, the underframe can be easily performed.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the electric wire duct structure according to the present invention, FIG. 2 is a side view of the electric wire duct of FIG. 1, and FIG. 3 is an enlarged sectional view of a mounting portion in FIG. The figure is the third
It is an AA part view of a figure. 1 ... Underframe, 2 ... Duct holder, 3 ... Duct side plate, 4 ...
… Duct bottom plate, 5 …… Duct retainer, 6 …… Through bolt,
7 ... Presser bolt, 8 ... Contact plate, 9 ... Cleat

Claims (3)

[Scope of utility model registration request] 1. A duct receiver is formed on the lower surface of the underframe,
In an electric wire duct structure of a railway vehicle, which comprises a duct main body that is engaged with the duct receiver and is drawn through in the longitudinal direction of the underframe, the duct receiver is provided with a space that matches the width dimension of the duct main body. The duct receivers are arranged in parallel so that their longitudinal directions are along the longitudinal direction of the underframe, and the tips of the respective duct receivers are formed in a hook shape, and the respective hook-shaped tips are arranged respectively toward the outside of the underframe width direction. Further, an inclined surface is formed at the hook-shaped tip portion of the duct receiver so that the distance between the lower surface of the frame and the lower surface of the frame becomes narrower toward the outer side in the frame width direction. Of the duct side plate and a duct bottom plate that forms the lower surface of the duct, and the pair of duct side plates respectively have engaging portions that engage with the duct receiver, and the engaging portions extend along the inclined surface of the duct receiver. Hooking surface, On the back side of the engaging surface, an engaging inclined surface is formed which is substantially parallel to the inclined surface of the duct receiver and has a gap between the lower surface of the underframe and the engaging portion of each duct side plate, and the hook-shaped tip of the duct receiver. A duct presser that is fixed to a portion of the duct presser, and one end of the duct presser that forms an inclined surface that contacts the engaging inclined surface of the engaging part of the duct side plate and a sliding surface that contacts the underside of the underframe. An electric wire duct structure for a railway vehicle, characterized in that fixing means for moving the duct side plate in the width direction of the underframe is provided at the end. 2. The electric wire duct structure for a railway vehicle according to claim 1 of the utility model registration, wherein a through bolt for installing an end portion through the duct side plate and maintaining a space between the duct side plates is provided. An electric wire duct structure for railway vehicles characterized by being provided. 3. The electric wire duct structure for a railway vehicle according to claim 1 of the utility model registration, wherein a width dimension corresponding to the length of the duct retainer in the longitudinal direction of the underframe is provided at the upper end of each duct side plate. An electric wire duct structure for railway vehicles, which is provided with a notch.