Locking device for containers

Patent metadata

Field	Value
Publication number	US-11047154-B2
Application number	US-201615736903-A
Country	US
Kind code	B2
Filing date	Oct 13, 2016
Priority date	Dec 3, 2015
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

The present disclosure suggests a locking device for containers. A locking device for containers according to an exemplary embodiment of the present disclosure includes: a housing including a base part, a protrusion protruded upwards from an upper surface of the base part, and a through hole formed by penetrating the base part and the protrusion in a vertical direction; a connection part rotatably inserted into the through hole of the housing; an upper cone positioned on the connection part and inserted into a lower corner fitting of a first container positioned on an upper end; and a lower cone positioned under the connection part and inserted into an upper corner fitting of a second container positioned on a lower end.

First claim

We claim:

1. A locking device for containers, comprising:
a housing including a base part, a protrusion protruded upwards from an upper surface of the base part, and a through hole formed by penetrating the base part and the protrusion in a vertical direction;
a connection part rotatably inserted into the through hole of the housing;
an upper cone positioned on the connection part and inserted into a lower corner fitting of a first container positioned on an upper end;
a lower cone positioned under the connection part and inserted into an upper corner fitting of a second container positioned on a lower end; and
a fastening fixing unit which is inserted into the lower corner fitting or upper corner fitting to suppress rotation of the upper cone or lower cone,
wherein the fastening fixing unit includes a front plate having a rectangular shape, a first inclined plate and a second inclined plate respectively extended from both ends of the front plate and bent outwards, a first rear plate extended from the first inclined plate and bent inwards in parallel with the front plate, a second rear plate extended from the second inclined plate and bent inwards in parallel with the front plate, a bending fixing part positioned on an outer surface of each of the first rear plate and the second rear plate and bent outwards, and a cone insertion part which is connected to the front plate and formed into a U-shape and into which the upper cone or lower cone is inserted,
wherein the fastening fixing unit is formed to be gradually decreased in width from the rear plates toward the front plate,
wherein the bending fixing part is configured for insertion into a hole of the upper or lower corner fitting when the fastening fixing unit is fixed to the upper or lower corner fitting,
wherein, when the upper cone or the lower cone is rotatably positioned in a locked state within the upper or lower corner fitting, the fastening fixing unit is inserted into a hole of the respective upper or lower corner fitting, such that the cone insertion part receives the upper or lower cone therein and engages opposing faces of the cone to prevent rotation of the upper or lower cone, and such that each of the bending fixing parts lockably engages an opposing edge of the hole.

2. The locking device for containers of claim 1 ,
wherein an upper portion of the base part is inserted into the lower corner fitting of the first container, and a lower portion of the base part is inserted into the upper corner fitting of the second container.

3. The locking device for containers of claim 1 ,
wherein the base part is chamfered along an upper edge and a lower edge.

4. The locking device for containers of claim 1 ,
wherein the upper cone includes:
an upper protrusion protruded upwards on its end, and
the lower cone includes:
a lower protrusion protruded downwards on its end.

5. The locking device for containers of claim 1 , further comprising:
a rotation locked part positioned on a circumferential surface of the connection part; and
a rotation locking groove to which the rotation locked part is inserted and which is formed on a circumferential surface of the protrusion.

6. The locking device for containers of claim 1 ,
wherein the first rear plate and the second rear plate each include a grip part.

7. The locking device for containers of claim 1 ,
wherein the fastening fixing unit satisfies the following Equation 1:
B<L≤A

L: Distance from the front plate to the rear plates
A: Distance from the upper cone or lower cone rotated to a locking position to an inner surface of the upper corner fitting or lower corner fitting
B: Distance from the upper cone or lower cone rotated to a release position to the inner surface of the upper corner fitting or lower corner fitting.

8. The locking device for containers of claim 1 ,
wherein the fastening fixing unit satisfies the following Equation 2:
C≤M <( C+D )

M: Distance from one end of the bending fixing part to a bent portion of the bending fixing part
C: Thickness of a front hole of the upper corner fitting or lower corner fitting
D: Difference in distance from the upper cone or lower cone rotated to a locking position and the upper cone or lower cone rotated to a release position to an inner surface of a front portion of the upper corner fitting or lower corner fitting.

9. The locking device for containers of claim 1 ,
wherein the fastening fixing unit is painted in a different color from a container.

Assignees

• Korea Railroad Res Institute

Inventors

• Kim Hag Seoung
• Kwon Yong Jang
• Kim Young Joo
• Kang Sung Wook
• Rhee Young Ho

Classifications

• E04B1/3483 Primary

  the supporting structure consisting of metal · CPC title

• B65D90/22

  Safety features · CPC title

• Y10T403/7005

  Lugged member, rotary engagement · CPC title

• E05B83/02 Primary

  Locks for railway freight-cars, freight containers or the like; Locks for the cargo compartments of commercial lorries, trucks or vans · CPC title

• B65D90/0013 Primary

  Twist lock · CPC title