JP2016203473A - Tip-stored type writing utensil incorporated with acceleration sensor - Google Patents

Abstract

The structure of the tip of a writing instrument such as a mechanical pencil or a ballpoint pen is fine and delicate and needs to be protected, and various measures have been tried so far. At present, the structure that houses and protects the tip portion within the shaft with one touch is the mainstream. However, this structure does not have a decisive effect of protecting the tip portions of these writing instruments, and if the tip portion is dropped with the tip portion exposed, the tip portion may contact the floor surface and be damaged. Among writing instruments such as mechanical pencils and ballpoint pens, an accelerometer is built in the shaft of a writing instrument having a structure in which the tip is housed in the shaft with a single touch, and power is supplied by a solar cell attached to a part off the shaft. In this way, when the free fall is detected and the tip portion is exposed outside the shaft, the tip portion is automatically stored immediately, thereby protecting the tip portion. As a result, the tip portions of these writing instruments are less likely to be damaged by free fall, and are more difficult to break and last longer. [Selection figure] None

Description

The present invention has a built-in accelerometer in the shaft of a writing instrument such as a mechanical pencil, ballpoint pen, fountain pen, sign pen, etc. that houses the tip in a single touch, and a solar cell attached to the shaft. The present invention relates to these writing tools which can minimize breakage of the pen tip as soon as possible by automatically storing the pen tip when the acceleration sensor detects a free fall of the writing tool.

The structure of the tip of writing instruments such as mechanical pencils, ballpoint pens, fountain pens and sign pens is fine and delicate and needs to be protected, and various countermeasures have been tried so far. At present, it can be said that the structure that houses and protects the tip part in the shaft with one touch is the mainstream. However, this structure does not have a decisive effect to protect the tip of these writing instruments, and if the tip is dropped with the tip exposed, there is a risk that the tip will touch the floor and break due to impact. It is in.
On the other hand, the acceleration sensor has been downsized due to the application of MEMS technology, and its application has expanded because it has become possible to detect multi-axis acceleration. From input devices of games and portable devices to machinery / transportation, environment, medical care, etc. Widely used. The functions are roughly classified into acceleration detection, tilt detection, vibration detection, motion detection, impact detection, drop detection and the like. In the fall detection, a weightless state is detected. Gravity acceleration is detected when the acceleration sensor is in a stationary or constant velocity motion state. If it is a free fall state, it will be in a so-called gravity-free state, and since the detected acceleration differs, it can detect a fall.

JP 2011-240503 PR

Japan Patent Office General Affairs Department Planning Research Section Technology Trend Group, FY2009 Patent Application Technology Trend Research Report Accelerometer (summary), [online], April 2010, Japan Patent Office, [Search April 21, 2015 ], Internet <URL: https://www.jpo.go.jp/shiryou/pdf/gidou.../21acceleration_sensor.pdf>

The structure of the tip of writing instruments such as mechanical pencils, ballpoint pens, fountain pens and sign pens is fine and delicate and needs to be protected, and various countermeasures have been tried so far. At present, it can be said that the structure that houses and protects the tip part in the shaft with one touch is the mainstream. However, this structure does not have a decisive effect for protecting the tip portion of these writing instruments, and if the tip portion is dropped with the tip portion exposed, the tip portion may contact the floor surface and be damaged due to an impact. There is enough.

The present invention is a solar cell with a built-in accelerometer in the shaft of a writing instrument structured to house the tip part in the shaft with a single touch among writing tools such as mechanical pencils, ballpoint pens, fountain pens, sign pens, etc. By supplying power to this, it can be operated by detecting free fall, and when the tip is exposed outside the shaft, the tip is automatically stored immediately, thereby protecting the tip more robustly. It is possible to do. As a result, among writing instruments such as mechanical pencils, ballpoint pens, fountain pens, sign pens, etc., the tip part of the writing instrument with a structure in which the tip part is housed in the shaft with a single touch will not be damaged by free fall, so it will be harder to break and will last longer. It becomes like this.

Claims (1)

Among writing instruments such as mechanical pencils, ballpoint pens, fountain pens, sign pens, etc., an accelerometer is built into the shaft of the writing instrument that is structured to house the tip in the shaft with a single touch, and this is powered by a solar cell attached to a part of the shaft. If the free fall is detected and the tip part is exposed outside the shaft, the tip part is automatically stored immediately, thereby protecting the tip part more robustly. A tip-retractable writing instrument with an acceleration sensor built-in.