Title:
SPRING LOCK SCREW
Document Type and Number:
Japanese Patent JP2019183907
Kind Code:
A
Abstract:
To provide a spring lock screw hardly generating looseness due to vibration and the like when it is used as a temporary fixing means and further capable of facilitating its temporary fixing work.SOLUTION: A spring lock screw 1 comprises a handle 2, a ferrule 4 engaged with an open hole 3 of the handle 2, a bolt 6 engaged with a bolt hole 5 of the ferrule 4 and a spring member 8 placed between a head part 7 of the bolt 6 and the ferrule 4. The handle 2 is formed with a pair of operation levers 10 capable of being applied with a turning force by a human fingertip around the open hole 3. The spring member 8 always applies an elastic force in such a direction as one in which the head part 7 of the bolt 6 and the ferrule 4 are spaced apart to each other. The bolt 6 is formed with a flange part 15 at the head part 7 and the flange part 15 is fixed in a flange part engaging groove 14 of the open hole 3. The ferrule 4 is formed with an anti-releasing protrusion 17 along an outer peripheral side and the anti-releasing protrusion 17 is pushed against a small-diameter part 16 of the open hole 3 by a spring 8.SELECTED DRAWING: Figure 1
Inventors:
TAKANO KEIICHI
Application Number:
JP2018073058A
Publication Date:
October 24, 2019
Filing Date:
April 05, 2018
Export Citation:
Assignee:
CAPTIVE FASTENER CO LITD
International Classes:
F16B35/06; F16B35/00; F16B39/24; F16B43/00
Attorney, Agent or Firm:
Onuki Kotake International Patent Office