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JPS6447521A - Formation of knob - Google Patents

Formation of knob

Info

Publication number
JPS6447521A
JPS6447521A JP20536687A JP20536687A JPS6447521A JP S6447521 A JPS6447521 A JP S6447521A JP 20536687 A JP20536687 A JP 20536687A JP 20536687 A JP20536687 A JP 20536687A JP S6447521 A JPS6447521 A JP S6447521A
Authority
JP
Japan
Prior art keywords
knob
display part
integrally
mold
molding
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.)
Pending
Application number
JP20536687A
Other languages
Japanese (ja)
Inventor
Jun Natsui
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.)
Alpine Electronics Inc
Original Assignee
Alpine Electronics Inc
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 Alpine Electronics Inc filed Critical Alpine Electronics Inc
Priority to JP20536687A priority Critical patent/JPS6447521A/en
Publication of JPS6447521A publication Critical patent/JPS6447521A/en
Pending legal-status Critical Current

Links

Landscapes

  • Details Of Measuring And Other Instruments (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To obtain a knob easily preparable and well processable, by heat- molding integrally the first display part illuminating a knob operating part and the second display part where numerals and characters are printed and moreover insert-molding integrally the first and the second display parts with a knob main body part forming the external form of the knob. CONSTITUTION:Numerals and characters are set on the surface of the first display part 3 illuminating the knob main body 1 and displaying No. of channel selection of radio and the like and when a knob is pushed, they are illuminated by LED (luminous diode) from the second display part 4. To prepare the knob, the first display part 3 is formed by molding polycarbonate material into a rough rectangular shape by using a mold in the first process, and an acrylic resin is integrally heat-molded on the first display part 3 through a mold in the second process. Moreover, in the third process, the first display part 3 and the second display part 4 having been integrated are integrally insert-molded with ABS resin by using a mold to form a knob.
JP20536687A 1987-08-19 1987-08-19 Formation of knob Pending JPS6447521A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20536687A JPS6447521A (en) 1987-08-19 1987-08-19 Formation of knob

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20536687A JPS6447521A (en) 1987-08-19 1987-08-19 Formation of knob

Publications (1)

Publication Number Publication Date
JPS6447521A true JPS6447521A (en) 1989-02-22

Family

ID=16505660

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20536687A Pending JPS6447521A (en) 1987-08-19 1987-08-19 Formation of knob

Country Status (1)

Country Link
JP (1) JPS6447521A (en)

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