Hitachi H100C, Technical Notes

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2-1-2 F eat u res of Link St r u ct u r e
Wh en usin g t h e lin k st r uct ur e for a lar ge-ca pacit y model,
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t h e sh ock t o t he m ou nt in g boa rd given by t he oper a t ion of t h e cont a ct or becom es sm a ll;
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com pact ness a n d ligh t weight ca n be r ea lized;
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cont a ct bou n ce pr odu ced wh en closin g ca n be decr eased.
(1) Wh at is t h e link st r uct ur e?
Th e link st r uct u re is shown in F ig. 5 , a nd is descr ibed below.
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A link con n ect ion is ma de so t h at t he cont a ct pa r t is a ble t o oper at e h or izont a lly by keepin g t h e wor k in g dir ect ion
of elect r om a gn et in pa r a llel wit h th e m ou n t in g boar d sur fa ce. (Th ereby, r educin g t h e sh ock t o t h e m ou nt in g boa r d).
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Compa ct n es s a nd r educt ion in weight is a chieved by placin g t h e elect rom a gnet ju st u nder th e con t a ct .
As a r esu lt of a dopt in g such a str u ct u r e, con t act bou n ce pr odu ced when closin g is decrea sed, t h us m a rkedly im -
pr ovin g t h e perfor m a n ce of la r ge-ca pa cit y m odels.
F ig. 5 Link st r u ct u re
(2) Sh ock of link st r u ct u r e pr odu cts t o m ou n t in g boa r d
S h ock s in t h e ca se of h or izon t a l p lu n ger t ype (t h e con t a ct a n d t h e m ovin g cor e m ove h or izon t a lly in t h e sa m e
dir ect ion ) of sm a ll- a n d m ediu m-ca pa cit y m odels a n d in t h e ca se of lin k st r u ct u r e of la r ge-ca pacit y m odels ar e as
sh own in F ig. 7. It can be seen fr om t h e gr aph t h at t h e sh ock even in t h e case of la r ge-ca pa cit y m odels is less t h an
6 t im es t h at of H 20.
F ig. 7 Ra t io of sh ock
F ig. 6 Measu r em ent of shock (assum in g t h at t h e sh ock of H 20 is 1)
a pplied t o boa r d by oper a t ion of con t act or