JPH0513790U - Anti-shake device for writing tip - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] Even if there is a gap between the tip inner diameter of the shaft cylinder and the writing tip because the cylinder with multiple grooves locks the writing tip during writing. I tried not to rattle. A cylinder 1 having an inner diameter slightly smaller than an outer diameter of a tip of a writing tip 6 and having a plurality of kerfs 2 at a tip and a step 3 at a rear end is formed in a step of the cylinder 1. The portion 3 is fixed so as to be locked to the locking step portion 4 provided at the tip of the shaft cylinder 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to prevention of rattling of a writing tip during writing.

[0002]

[Prior Art]

 Conventionally, in a writing instrument having a retractable mechanism such as a ballpoint pen or a ball-point pen having a pencil-type writing tip end fixed, the writing tip is projected or retracted through a tip hole slightly larger than the tip outer diameter of the writing tip. It was protruding.

[0003]

[Problems to be solved by the device]

 However, the above-mentioned conventional type causes rattling because the inner diameter of the tip hole of the barrel is slightly larger than the outer diameter of the writing tip when writing, and there is rattling noise especially when the tip is metal, which causes discomfort. There were drawbacks such as giving. In addition, in order to eliminate this rattling, the outer diameter of the writing tip and the inner diameter of the tip hole of the barrel need to be highly accurate.

[0004]

[Means for Solving the Problems]

 The wobbling prevention device for the writing tip according to the present invention solves these drawbacks.It has a plurality of kerfs and an inner diameter slightly smaller than the outer diameter of the writing tip. It is locked to.

[0005]

[Action]

 With the above structure, the writing tip is locked in the cylinder, so that there is no rattling during writing.

[0006]

【Example】

 An embodiment of a device for preventing shake of the writing tip according to the present invention will be described with reference to the drawings. A tubular body 1 having a slightly smaller inner diameter is fixed so that a step portion 3 of the tubular body 1 is locked to a locking step portion 4 provided in a tip end of a shaft cylinder 5. Incidentally, 7 is a locking piece formed by carving the cut groove 2. Therefore, when using a writing instrument, a knocking rod (not shown) is pressed so that the writing tip 6 spreads the elastic locking piece 7 of the cylinder 1 through the tip hole 8 of the barrel 5. The writing tip is in a protruding state, and the writing tip portion 6 does not shake due to the action of the elastic locking piece 7, and no rattling sound is generated.

Further, as shown in FIG. 3, by making the inner diameter of the cylindrical body 1 smaller toward the tip, the effect of preventing the wobbling of the writing tip becomes more complete.

[0008]

[Effect of the device]

 As described above, the wobbling prevention device of the writing tip according to the present invention eliminates the rattling sound caused when the writing tip and the tip hole of the barrel contact each other when writing, and the writing tip is engaged by the locking piece of the cylinder. Since it is stopped, the inner diameter of the tip hole of the barrel and the outer diameter of the writing tip can be slightly varied.

[Brief description of drawings]

FIG. 1 is a perspective view of a cylindrical body in a shake preventing device for a writing tip according to the present invention.

FIG. 2 is a vertical cross-sectional view of the device for preventing shake of a writing tip according to the present invention with a part thereof omitted.

FIG. 3 is a vertical cross-sectional view of another embodiment of the cylindrical body of the device for preventing shake of the writing tip according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylindrical body 2 Cutting groove 3 Step part 4 Locking step part 5 Shaft cylinder 6 Writing tip part 7 Locking piece 8 Tip hole

Claims (2)

[Scope of utility model registration request] 1. A cylindrical body having an inner diameter slightly smaller than the outer diameter of the writing tip, having a plurality of kerfs at the tip and a step at the rear end. A wobbling prevention device for a writing tip, which is fixed so as to be locked by a locking step provided in the tip. 2. The wobbling prevention device for the writing tip portion according to claim 1, wherein the inner diameter of the cylindrical body becomes smaller as it goes to the tip.