Collision energy absorbing device of railcar

Patent metadata

Field	Value
Publication number	US-2018222417-A1
Application number	US-201615580411-A
Country	US
Kind code	A1
Filing date	Jun 7, 2016
Priority date	Aug 4, 2015
Publication date	Aug 9, 2018
Grant date	—

Abstract

A collision energy absorbing device of a railcar includes: an outside plate constituting an outer tube including 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 outside plate, the at least one partition plate fixed to the outside plate and dividing the internal space. An outer shape of the outer tube is a shape that is symmetrical with respect to a virtual horizontal surface including the axis, and the at least one partition plate includes a missing portion in the internal space.

First claim

1 . A collision energy absorbing device of a railcar,
the collision energy absorbing device comprising: an 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 outside plate, the at least one partition plate fixed to the outside plate and dividing the internal space, an outer shape of the outer tube being a shape that is symmetrical with respect to a virtual horizontal surface including the axis, and the at least one partition plate including a missing portion in the internal space.

2 . The collision energy absorbing device according to claim 1 , wherein the missing portion has such a shape that an area of a cross section of the partition plate which section is perpendicular to the axis increases or decreases as a cutting position of the cross section of the partition plate goes from a front side to a rear side.

3 . The collision energy absorbing device according to claim 1 , wherein the missing portion has a shape that is symmetrical with respect to a virtual horizontal surface including the axis or a virtual vertical surface including the axis.

4 . The collision energy absorbing device according to claim 1 , further comprising:
a front plate facing a front end of the outer tube; and a rear plate facing a rear end of the outer tube, wherein the front plate closes an opening of the front end of the outer tube, and the rear plate closes an opening of the rear end of the outer tube.

5 . The collision energy absorbing device according to claim 1 , further comprising a front plate facing a front end of the outer tube, wherein
the front plate has such a shape that a car width direction middle portion thereof projects forward beyond both car width direction end portions thereof.

6 . The collision energy absorbing device according to claim 1 , wherein:
the at least one partition plate comprises a vertical partition plate and a horizontal partition plate intersecting with the vertical partition plate; the missing portion of at least one of the vertical partition plate and the horizontal partition plate is formed at a car longitudinal direction end portion of the at least one partition plate; the car longitudinal direction end portion includes a concave portion depressed in the car longitudinal direction and a convex portion projecting in the car longitudinal direction; and the convex portion is arranged at a position where the vertical partition plate and the horizontal partition plate intersect with each other.

7 . The collision energy absorbing device according to claim 1 , wherein a vertical length of a rear end of the outer tube is longer than a horizontal length of the rear end of the outer tube, and a vertical length of a front end of the outer tube is shorter than a horizontal length of the front end of the outer tube.

8 . The collision energy absorbing device according to claim 2 , wherein the missing portion has a shape that is symmetrical with respect to a virtual horizontal surface including the axis or a virtual vertical surface including the axis.

9 . The collision energy absorbing device according to claim 2 , further comprising:
a front plate facing a front end of the outer tube; and a rear plate facing a rear end of the outer tube, wherein the front plate closes an opening of the front end of the outer tube, and the rear plate closes an opening of the rear end of the outer tube.

10 . The collision energy absorbing device according to claim 3 , further comprising:
a front plate facing a front end of the outer tube; and a rear plate facing a rear end of the outer tube, wherein the front plate closes an opening of the front end of the outer tube, and the rear plate closes an opening of the rear end of the outer tube.

11 . The collision energy absorbing device according to claim 2 , further comprising a front plate facing a front end of the outer tube, wherein
the front plate has such a shape that a car width direction middle portion thereof projects forward beyond both car width direction end portions thereof.

12 . The collision energy absorbing device according to claim 3 , further comprising a front plate facing a front end of the outer tube, wherein
the front plate has such a shape that a car width direction middle portion thereof projects forward beyond both car width direction end portions thereof.

13 . The collision energy absorbing device according to claim 2 , wherein:
the at least one partition plate comprises a vertical partition plate and a horizontal partition plate intersecting with the vertical partition plate; the missing portion of at least one of the vertical partition plate and the horizontal partition plate is formed at a car longitudinal direction end portion of the at least one partition plate; the car longitudinal direction end portion includes a concave portion depressed in the car longitudinal direction and a convex portion projecting in the car longitudinal direction; and the convex portion is arranged at a position where the vertical partition plate and the horizontal partition plate intersect with each other.

14 . The collision energy absorbing device according to claim 3 , wherein:
the at least one partition plate comprises a vertical partition plate and a horizontal partition plate intersecting with the vertical partition plate; the missing portion of at least one of the vertical partition plate and the horizontal partition plate is formed at a car longitudinal direction end portion of the at least one partition plate; the car longitudinal direction end portion includes a concave portion depressed in the car longitudinal direction and a convex portion projecting in the car longitudinal direction; and the convex portion is arranged at a position where the vertical partition plate and the horizontal partition plate intersect with each other.

15 . The collision energy absorbing device according to claim 4 , wherein:
the at least one partition plate comprises a vertical partition plate and a horizontal partition plate intersecting with the vertical partition plate; the missing portion of at least one of the vertical partition plate and the horizontal partition plate is formed at a car longitudinal direction end portion of the at least one partition plate; the car longitudinal direction end portion includes a concave portion depressed in the car longitudinal direction and a convex portion projecting in the car longitudinal direction; and the convex portion is arranged at a position where the vertical partition plate and the horizontal partition plate intersect with each other.

16 . The collision energy absorbing device according to claim 2 , wherein a vertical length of a rear end of the outer tube is longer than a horizontal length of the rear end of the outer tube, and a vertical length of a front end of the outer tube is shorter than a horizontal length of the front end of the outer tube.

17 . The collision energy absorbing device according to claim 3 , wherein a vertical length of a rear end of the outer tube is longer than a horizontal length of the rear end of the outer tube, and a vertical length of a front end of the outer tube is shorter than a horizontal length of the front end of the outer tube.

18 . The collision energy absorbing device according to claim 4 , wherein a vertical length of a rear end of the outer tube is longer than a horizontal length of the rear end of the outer tube, and a

Assignees

• Kawasaki Heavy Ind Ltd

Inventors

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

Classifications

• F16F7/128

  characterised by the members, e.g. a flat strap, yielding through stretching, pulling apart · CPC title

• B60R19/34 Primary

  destroyed upon impact, e.g. one-shot type · 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

• B61D15/06 Primary

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