Title:
ILLUMINATING TYPE PUSH-BUTTON SWITCH APPARATUS
Document Type and Number:
Japanese Patent JP3103833
Kind Code:
B2
Abstract:
PURPOSE: To provide rigid finger feeling and improve click feeling without wearing letters by putting a seen through-type elastic sheet, a lower sheet, and a light guiding plate under a seen through-type resin key top with 40 degrees or higher Shore hardness.
CONSTITUTION: A seen through type elastic sheet 1 having a colored layer, a seen through-type elastic colored layer 3, and a translucent elastic colored layer 4 having letter and sign parts are successively formed under a seen through-type resin key top part 2 formed in projected state and having 40 degrees or higher Shore hardness. A lower sheet member B composed of a seen through type elastic sheet 5 and a translucent click plate pushing element 6 formed in projected state is put under the upper sheet member A composed in the above mentioned way. A light guiding plate 7, a click plate 8, a circuit substrate 9, a light source 10, etc., are arranged under the member B. Due to rigid finger feeling, input operation can be carried out smoothly and the letters, etc., are covered with the sheet part 1 and the key top part 2, so that the letters, etc., are never worn and good clicking can be felt due to the plate 8 at the time of pushing.
Inventors:
Sadao Nakano
Mikio Kiyosawa
Noboru Nakafuji
Toshihiro Motoki
Mikio Kiyosawa
Noboru Nakafuji
Toshihiro Motoki
Application Number:
JP18810694A
Publication Date:
October 30, 2000
Filing Date:
August 10, 1994
Export Citation:
Assignee:
Shin-Etsu Polymer Co., Ltd.
International Classes:
H01H13/02; C09K11/02; H01H13/14; H01H13/702; H01H13/785; H05B33/00; H05B33/10; H05B33/12; H05B33/20; H05B33/22; H05B33/26; H05B33/28; H01H13/703; (IPC1-7): H01H13/02; H01H13/14
Domestic Patent References:
| JP61140009A | ||||
| JP62197220U |
Attorney, Agent or Firm:
Ryoichi Yamamoto (1 person outside)