Title:
FALL PREVENTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/163354
Kind Code:
A1
Abstract:
Provided is a fall prevention device that: comprises a lock mechanism made more simply and cheaply, having excellent durability, and not requiring power; and has a structure whereby the amount of protrusion of a fall prevention plate can be altered. A first link mechanism 40 converts linear motion of a drive slider 24 into swinging motion of a swinging end roller 46 and swings same in conjunction with a second link mechanism 60. An output end roller 67 of the second link mechanism 60 engages using a guide groove 66 in a follow slider 62 fixed to the fall prevention plate 16 and linearly moves the fall prevention plate 16. When the fall prevention plate 16 is in a protrusion-completed state or a storage-completed state, the direction of acting force from a roller contact surface 64 pressing on the swinging end roller 46 is above a straight line connecting the swinging end roller 46 and a swing shaft 44 of a first link lever 43 and acts as a lock. The guide groove 66 is orthogonal or substantially orthogonal to the movement direction of the fall prevention plate 16.
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Inventors:
SAKURAI IKUO (JP)
Application Number:
PCT/JP2016/059336
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 | |||
| JP2005014805A | 2005-01-20 |
Other References:
See also references of EP 3434548A4
Attorney, Agent or Firm:
KURODA, Yasushi et al. (JP)
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