Mitsubishi Electric Corporation

Caterpillar Sarl

Hiroya Ito

Takashi Ikeda

Takuya Teramoto

Shingo Hamada

Yuki Ugajin

Yusuke Adachi

Takahide Tadokoro

Katsuyuki Yamamoto

Takafumi Abe

Kota Tatsumi

Naoki Miyata

Kazufumi Nishimoto

Toru Amaya

Hirokazu Koga

Tetsuya Koshima

In a construction machine where an arm, a working attachment, and a distal end portion of an extensible cylinder are coupled via a power link and an idler link, to achieve protection of a grease feeding piping when the grease feeding piping is arranged in the idler link, and to ensure that the structure of the idler link is not complicated. In an idler link, there is formed a protruding part which protrudes in a direction opposite to a bucket from a link body part of the idler link; there is provided a grease feeding piping arrangement space which extends in a link length direction, toward right and left inside of right and left outer side faces of the protruding part, with at least either one side of the side opposite to the bucket or right and left inward sides open; and a grease feeding piping is arranged in the grease feeding piping arrangement space, in a state of not protruding in a direction opposite to the bucket beyond a protruding distal end portion face of the protruding part and not protruding toward right and left inside beyond right and left inner side link faces of the link body part.

Grease feeding piping arrangement structure in construction machine

A clearance adjusting member that easily attaches and detaches without risk of falling off a pin is disclosed. A first member and a second member are coupled freely to be rotated in relation to each other by a cylindrical pin. For adjusting an axial clearance between the two members, the clearance adjusting member comprises a shim in a U or C-shape attached to the pin in the axial clearance, and a restricting means for restricting the shim while being freely releasable. A restricted piece protruding radially outward is formed on an outer circumferential edge of the shim. The restricting means includes a pair of restricting pieces spacedly arranged circumferentially on the radially outer side of the pin. When the shim is inserted towards the axial clearance, the restricted piece becomes positioned between the pair of restricting pieces and the shim is attached to the pin.

Clearance adjusting member

A propeller fan includes a shaft portion disposed on a rotation axis, and a blade disposed on an outer peripheral side of the shaft portion and including a leading edge and a trailing edge. The blade includes a negative pressure surface in which a plurality of recesses are formed, and the plurality of recesses include a first recess and a second recess disposed on the trailing edge side than the first recess in a circumferential direction about the rotation axis as a center. The first recess has a depth larger than a depth of the second recess.

Propeller fan, air-sending device, and refrigeration cycle device

A propeller fan includes a cylindrical shaft portion provided on a rotation axis of the propeller fan; a plurality of blades provided on an outer peripheral side of the shaft portion; a connection portion provided adjacent to the shaft portion and connecting two of the plurality of blades that are adjacent to each other in a circumferential direction of the propeller fan; a first rib provided on at least one of a pressure surface of each of the plurality of blades and a surface of part of the connection portion that is located on a downstream side in the flow of air, and a second rib provided on at least one of a negative-pressure surface of each of the plurality of blades and a surface of part of the connection portion that is located on an upstream side in the flow of air.

Propeller fan, air-sending device, and refrigeration cycle apparatus

A propeller fan according to an embodiment of the present invention includes a shaft provided a rotation axis of the propeller fan, and a blade provided on an outer peripheral side of the shaft. The blade has a trailing edge on a rear side of the blade in a rotation direction of the propeller fan. The trailing edge includes a first trailing edge located on an innermost side of the trailing edge, and a second trailing edge adjacent to and outward of the first trailing edge. Where an innermost point of the first trailing edge is a first connection point, a connection point between the first trailing edge and the second trailing edge is a second connection point, and a straight line that extends through the rotation axis and the first connection point is a reference line, the second connection point is located forward of the reference line in the rotation direction, or located on the reference line, and the second trailing edge is located rearward of the second connection point in the rotation direction.

Propeller fan

Powerlink

Growing community of inventors

Tokyo, Japan

Hiroya Ito