Title:
MULTICORE WRITING INSTRUMENT
Document Type and Number:
Japanese Patent JP2018167410
Kind Code:
A
Abstract:
To provide a multicore writing instrument which does not give the user uncomfortable feeling when exchanging a writing body.SOLUTION: An operating body having an operating portion is provided on the rear end side of each writing body, and a plurality of window holes extending in the front-rear direction are provided so as to penetrate through the side wall of the barrel in a radial direction, and the operating portion of each operating body projects radially outward from the corresponding window hole. An interior of the barrel is provided with a locking portion capable of locking a part of the operating body corresponding to the operating portion when a certain operating portion is slid forward. A plurality of coil springs for urging rearwardly the plurality of writing bodies are provided inside the barrel, and the front end sides of the plurality of coil springs are supported by a spring support fixed to the barrel. The spring support is provided with a plurality of inner holes through which a plurality of writing bodies can be inserted respectively, and a chamfered region is provided in at least a part of the front end of each inner hole on the side of the central axis of the barrel.SELECTED DRAWING: Figure 6
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Inventors:
HAYAKAWA NAOTOSHI
Application Number:
JP2017064589A
Publication Date:
November 01, 2018
Filing Date:
March 29, 2017
Export Citation:
Assignee:
PILOT CORP
International Classes:
B43K24/18; B43K27/08
Domestic Patent References:
| JP2011011375A | 2011-01-20 | |||
| JPH0426782U | 1992-03-03 | |||
| JP2015112775A | 2015-06-22 |
Foreign References:
| US5599122A | 1997-02-04 |