Cab for construction machine and construction machine

Patent metadata

Field	Value
Publication number	US-9273498-B2
Application number	US-201314346051-A
Country	US
Kind code	B2
Filing date	Oct 8, 2013
Priority date	Sep 2, 2013
Publication date	Mar 1, 2016
Grant date	Mar 1, 2016

Abstract

A fixture is attached to a hollow tube and has a pair of shafts protruding in a width direction. A handle has a base portion and a grip portion located at an end on the outside of the base portion. The base portion has a pair of side portions sandwiching both side surfaces of the fixture. The pair of side portions each have a hole receiving corresponding one of the pair of shafts. A restriction portion of a displacement preventing plate restricts a movement of the side portions in the width direction in a portion of each of the side portions located between an end on the grip portion side of the fixture and an end on the hollow space side of the base portion.

First claim

The invention claimed is:

1. A cab for a construction machine, said cab comprising a door and a door opening and closing mechanism for opening and closing said door,
said door opening and closing mechanism including
a hollow tube having a hollow space therein and having a hole connecting said hollow space to outside of the tube,
a shaft support portion attached to said hollow tube, the shaft support portion having a pair of shafts protruding from respective side surfaces facing each other in a width direction,
a handle having a base portion including a pair of side portions that sandwich both of said side surfaces and each have a recess receiving a corresponding one of said pair of shafts, and a grip portion at an end of said base portion on the outside of the tube, said handle being movable in a direction in which said handle is pushed into said hollow space, and
a restriction member disposed on outward sides of the pair of side portions of the base portion restricting a movement of said base portion in said width direction, the restriction member disposed in a region extending between an end of said shaft support portion on the grip portion side inward to an end of said base portion on a hollow space side of the base portion.

2. The cab for a construction machine according to claim 1 , wherein
said base portion has an extension portion extending in a direction opposite to said grip portion with respect to said shafts, and
said restriction member restricts the movement of said base portion in said width direction in said extension portion.

3. The cab for a construction machine according to claim 1 , wherein said restriction member restricts the movement of said base portion in said width direction at least in said recess.

4. The cab for a construction machine according to claim 1 , wherein said restriction member has a portion that is decreased in width with an increase in distance from said shafts in a longitudinal direction of said hollow tube.

5. The cab for a construction machine according to claim 1 , wherein
said handle has a rib disposed between said pair of side portions, and
said restriction member has a restriction portion restricting the movement of said base portion in said width direction and a support portion connected to said restriction portion and supported by said rib of said handle.

6. The cab for a construction machine according to claim 5 , wherein
said support portion has a notch portion formed to sandwich said rib, and
said notch portion has a tapered shape or a round shape so as to have an opening that is decreased in width with an increase in distance from an open end of said notch portion.

7. The cab for a construction machine according to claim 5 , wherein said support portion is in contact with at least one of said pair of side portions of said base portion.

8. A construction machine comprising said cab for a construction machine according to claim 1 .

Assignees

• Komatsu Mfg Co Ltd

Inventors

• Kato Yasunari

Classifications

• E05B83/42

  for large commercial vehicles, e.g. trucks, construction vehicles or vehicles for mass transport · CPC title

• B60J5/0487

  simplified doors related to cabins of, e.g. golf carts, tractors, jeeps, cranes, forklifts, etc. · CPC title

• Y10T292/57

  Operators with knobs or handles · CPC title

• E02F9/163

  Structures to protect drivers, e.g. cabins, doors for cabins; Falling object protection structure [FOPS]; Roll over protection structure [ROPS] (for handrails mounted on cabins E02F9/0833 takes precedence; for vehicles in general B60R21/11, B60R21/13, for fork-lift trucks B66F9/07545) · CPC title

• E05B79/20 Primary

  using flexible connections, e.g. Bowden cables · CPC title