JPS5586777A - Solenoid type plunger hammer - Google Patents

Solenoid type plunger hammer

Info

Publication number
JPS5586777A
JPS5586777A JP15862878A JP15862878A JPS5586777A JP S5586777 A JPS5586777 A JP S5586777A JP 15862878 A JP15862878 A JP 15862878A JP 15862878 A JP15862878 A JP 15862878A JP S5586777 A JPS5586777 A JP S5586777A
Authority
JP
Japan
Prior art keywords
plunger
hammer
hammer shaft
discharging part
moved
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP15862878A
Other languages
Japanese (ja)
Other versions
JPS5813356B2 (en
Inventor
Seiji Ishii
Tetsuo Sugano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP53158628A priority Critical patent/JPS5813356B2/en
Publication of JPS5586777A publication Critical patent/JPS5586777A/en
Publication of JPS5813356B2 publication Critical patent/JPS5813356B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Impact Printers (AREA)
  • Electromagnets (AREA)

Abstract

PURPOSE: To improve a thrust force of a plunger, its operational response and life by arranging a discharging part for worn powder at a circumferential wall of a bearing for a hammer shaft.
CONSTITUTION: When a pulse current is fed to the energizing coil 2, the yoke 3 is magnetized, and the plunger 5 is moved straight in a forward direction by a magnetic retraction force against a biasing force of the coil spring 8. As the plunger 5 is moved, the hammer shafts 6A and 6B are moved forwardly with being supported by the bearings 7A and 7B to strike a character 18 carried in a printing wheel 17 at a leading end 15 of the hammer shaft 6A. In this case, the worn powder generated by a sliding contact between the hammer shaft 6A and the front bearing 7A is pushed gradually toward the discharging part 13 by a reciprocating movement of the hammer shaft 6A, fallen from the discharging part 13 by a gravity of the worn powder and thereby discharged. Thus, a thrust force of the plunger is always kept at its high value.
COPYRIGHT: (C)1980,JPO&Japio
JP53158628A 1978-12-25 1978-12-25 Solenoid type plunger hammer Expired JPS5813356B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53158628A JPS5813356B2 (en) 1978-12-25 1978-12-25 Solenoid type plunger hammer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53158628A JPS5813356B2 (en) 1978-12-25 1978-12-25 Solenoid type plunger hammer

Publications (2)

Publication Number Publication Date
JPS5586777A true JPS5586777A (en) 1980-06-30
JPS5813356B2 JPS5813356B2 (en) 1983-03-12

Family

ID=15675853

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53158628A Expired JPS5813356B2 (en) 1978-12-25 1978-12-25 Solenoid type plunger hammer

Country Status (1)

Country Link
JP (1) JPS5813356B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5967248U (en) * 1982-10-28 1984-05-07 株式会社リコー Printing hammer mechanism
JPS6213637U (en) * 1985-07-11 1987-01-27
US4721400A (en) * 1986-01-16 1988-01-26 Fuji System Machines Co., Ltd. Hammer unit for printers

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5362410U (en) * 1976-10-26 1978-05-26

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5362410U (en) * 1976-10-26 1978-05-26

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5967248U (en) * 1982-10-28 1984-05-07 株式会社リコー Printing hammer mechanism
JPS6213637U (en) * 1985-07-11 1987-01-27
US4721400A (en) * 1986-01-16 1988-01-26 Fuji System Machines Co., Ltd. Hammer unit for printers

Also Published As

Publication number Publication date
JPS5813356B2 (en) 1983-03-12

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