Title:
COMPRESSION HEAD PART OF HYDRAULIC TOOL
Document Type and Number:
Japanese Patent JP3177828
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To needlessly make a screw hole of a guide pin, to raise the strength of a central supporting part and to dissolve the accident of breaking of a head part by bridging with a return spring between a spring inserting hole formed on a moving die and a notch formed on the base end part of a central supporting part.
SOLUTION: Spring inserting holes 20a, 21a are projected and installed on the central part of moving dies 20, 21 to move on side supporting parts 12, 13, and one end sides of return springs 22, 23 are inserted respectively. The other end sides of the return springs 22, 23 are inserted and fitted in notches 11b, 11c formed on a base end part 11a of a central supporting part 11 of a guide plate 10. The moving dies 20, 21 are always energized to the outside with the return springs 22, 23. When an electric wire 47 is crushed, its balance is made defectively, even an excess load is applied on the central supporting part 11, because the notches 11b, 11c are formed shallow, the strength of the base end part 11a is not almost influenced and breaking, etc., is not generated.
Inventors:
Masafumi Yamamoto
Lorient Breaker
Lorient Breaker
Application Number:
JP5260597A
Publication Date:
June 18, 2001
Filing Date:
March 07, 1997
Export Citation:
Assignee:
Izumi Seiki Co., Ltd.
International Classes:
B21D39/00; B21D41/04; B25B27/14; H01R43/042; H01R43/048; H01R43/058; (IPC1-7): B21D41/04; B21D39/00; H01R43/048
Domestic Patent References:
| JP7284863A | ||||
| JP5671327U | ||||
| JP6163786U | ||||
| JP639225U |
Attorney, Agent or Firm:
Michizo Isono
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