Collision energy absorbing device of railcar

Patent metadata

Field	Value
Publication number	US-2018162422-A1
Application number	US-201615580505-A
Country	US
Kind code	A1
Filing date	Jun 7, 2016
Priority date	Aug 4, 2015
Publication date	Jun 14, 2018
Grant date	—

Abstract

A collision energy absorbing device of a railcar includes: at least one outside plate constituting an outer tube having an axis extending in a car longitudinal direction; and at least one partition plate extending in the car longitudinal direction in an internal space surrounded by the at least one outside plate, the at least one partition plate fixed to the at least one outside plate and dividing the internal space. An end portion of the partition plate which portion is located at an end in a direction perpendicular to the axis is sandwiched by the at least one outside plate and constitutes a part of the outer tube.

First claim

1 . A collision energy absorbing device of a railcar,
the collision energy absorbing device comprising: at least one outside plate constituting an outer tube having an axis extending in a car longitudinal direction; and at least one partition plate extending in the car longitudinal direction in an internal space surrounded by the at least one outside plate, the at least one partition plate fixed to the outside plate and dividing the internal space, an end portion of the partition plate which portion is located at an end in a direction perpendicular to the axis being sandwiched by the outside plate, the end portion constituting a part of the outer tube.

2 . The collision energy absorbing device according to claim 1 , wherein:
the at least one outside plate comprises a plurality of outside plates; and the end portion of the partition plate is sandwiched by opposing end edges of the plurality of outside plates.

3 . The collision energy absorbing device according to claim 1 , wherein:
the end portion of the partition plate projects outward beyond an outer surface of the outside plate; and the end portion of the partition plate and the outer surface of the outside plate are joined to each other by welding.

4 . The collision energy absorbing device according to claim 3 , further comprising a front plate facing a front end of the outer tube, wherein:
a front end of the end portion of the partition plate contacts the front plate from behind; a projection amount of a front end region of the end portion of the partition plate from the outer surface of the outside plate decreases as the front end region extends forward; and a front end portion of the outer tube and the front plate are joined to each other by welding from outside.

5 . The collision energy absorbing device according to claim 1 , wherein:
the at least one partition plate includes a vertical partition plate and a horizontal partition plate intersecting with the vertical partition plate; the vertical partition plate and the horizontal partition plate include respective opposing slits fitted to each other; and the vertical partition plate and the horizontal partition plate are joined to each other by welding with the opposing slits fitted to each other.

6 . The collision energy absorbing device according to claim 1 , wherein:
a slot is formed at a position of the outside plate, the position being separated from one of car longitudinal direction end edges of the outside plate; and the end portion of the partition plate is inserted into the slot.

Assignees

• Kawasaki Heavy Ind Ltd

Inventors

• Sano Atsushi
• Kawakami Naoaki
• Yoshida Naohiro
• Hata Shinichiro
• Yagi Seiichiro
• Tomizawa Masayuki

Classifications

• B61F19/04 Primary

  Bumpers or like collision guards · CPC title

• B61D15/06

  Buffer cars; Arrangements or construction of railway vehicles for protecting them in case of collisions (buffers B61G11/00) · CPC title

• B60R19/26

  comprising yieldable mounting means ({B60R19/38 takes precedence;} springs, shock absorbers, or means for damping vibrations per se F16F) · CPC title

• B61G11/16

  absorbing shocks by permanent deformation of buffer element · CPC title

• F16F7/12

  using plastic deformation of members {(F16F9/30 takes precedence; yieldable means for mounting bumpers on vehicles B60R19/26; yieldable or collapsible steering columns B62D1/192)} · CPC title