To solve the problems that it is difficult to arrange the mechanism elements of other functions since elements for elevating/lowering drive occupy a wide area in the state of lowering an elevating/lowering frame in a conventional X link type elevating/lowering mechanism, and the elevating/lowering frame falls down to cause risk when a direct acting actuator is broken in the configuration of elevating the elevating/lowering frame in the operation in the pulling direction of the direct acting actuator, etc.
In the elevating/lowering mechanism having a first link 3 and a second link 4 configuring an X link mechanism between a base frame 1 and the elevating/lowering frame 2, the X link type elevating/lowering mechanism is configured such that a drive member 11 turnably provided on the other end side of the second link is provided with a push-up arm 12 and a drive arm 13, a guide member 15 for guiding a moving member 14 provided on the end part of the push-up arm is provided in the length direction on the other end side of the first link, and the direct acting actuator 16 is provided between the other end side of the first link and the drive arm.
TAKADA TORU
TOMIKAWA ATSUSHI
KAGEYAMA OTOKO
SASAKI YURI
NOMURA KATSUYOSHI
| JP2006340964A | 2006-12-21 | |||
| JPH08217392A | 1996-08-27 | |||
| JP2005348983A | 2005-12-22 | |||
| JP2002320651A | 2002-11-05 |
Next Patent: BED HAVING X-LINK TYPE ELEVATING MECHANISM