Title:
FALL PREVENTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/163355
Kind Code:
A1
Abstract:
Provided is a fall prevention device having a lock mechanism that, although having a simple mechanical structure, can adjust the amount of protrusion of a fall prevention plate. A swinging body 40 engages with a motive end roller 27 in a drive slider 25 having linear motion, in the motive end thereof; and engages with a guide groove 66 in a follow slider 62 coupled to the fall prevention plate 16 by using a follow end roller 46 capable of having the installation position thereof changed in a displaceable installation direction in the follow end thereof. The fall prevention device has a reverse-action prevention structure whereby, when the fall prevention plate is in a protrusion-completed state or a storage-completed state, only motion transmission in the forward direction from the drive slider 25 to the swinging body 40 is enabled. The guide groove 66 is configured in a direction orthogonal or substantially orthogonal to the direction of progress for the fall prevention plate 16 and the displaceable installation direction and the direction of the guide groove 66 are parallel in the storage-completed state.
Inventors:
SAKURAI IKUO (JP)
Application Number:
PCT/JP2016/059337
Publication Date:
September 28, 2017
Filing Date:
March 24, 2016
Export Citation:
Assignee:
KYOSAN ELECTRIC MFG (JP)
International Classes:
B61B1/02
Foreign References:
| JP2015143052A | 2015-08-06 | |||
| JP2014125060A | 2014-07-07 | |||
| JP2011105193A | 2011-06-02 |
Other References:
See also references of EP 3434549A4
Attorney, Agent or Firm:
KURODA, Yasushi et al. (JP)
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