JPS6321431Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a clip attachment device for a double-headed compound writing instrument having a writing body at both ends.

In conventional writing instrument clip attachment devices, the clip is fixed at a predetermined position on the barrel, and the clip is always attached in the same direction. Therefore, there is no problem with writing instruments in which the writing body only protrudes from one end of the barrel, but with double-headed compound writing instruments in which the writing body protrudes from both ends of the barrel, the clip hits the finger and becomes a hindrance, making it difficult to write. It had the disadvantage that it was difficult to use.

This idea eliminates all of the above-mentioned conventional drawbacks by attaching the clip to the shaft barrel so that it can slide back and forth and be reversible.In addition, the double-headed clip allows the user to change the direction of the clip according to the user's frequency of use. The object of the present invention is to provide a clip attachment device for a composite writing instrument.

The structure of this invention will be explained based on the drawings. As shown in Fig. 1, the mechanical part of the knock-type sharp pencil body, which consists of a chuck, a tightening ring, a connecting device, a chuck spring, and a lead tank, is attached to a barrel 1. Further, a cap 2 having a core holder is in close contact with the shaft cylinder 1 via a connector. On the other hand, shaft cylinder 1
The lead tank of the lock type sharp pencil body is extended inside the rear part of the barrel 1, and is cut off at an arbitrary distance from the rear end of the barrel 1. Then, the ballpoint pen body 3 is press-fitted inside the rear end of the lead tank,
The tip of the ballpoint pen body 3 is configured to protrude from the rear end of the barrel 1. A knob cover 4 is fitted to the ballpoint pen body 3 so as to cover the tip thereof, and the knob cover 4 is constructed so as to be able to be fitted to the mouthpiece 2 of a knob-type sharp pencil body. Two locking protrusions 1C are provided on each of the front part 1A and rear part 1B of this shaft cylinder 1, and a fixing ring 5 that is slidable back and forth in the axial direction is engaged between the locking protrusions 1C on the rear part 1B. ing. As shown in FIG. 2, a protrusion 6A provided at the rear of the clip 6 is rotatably inserted into the locking hole 5A of the fixing ring 5. With this configuration, when the ballpoint pen body 3 is used, the fixing ring 5 is moved to engage between the two locking protrusions 1C on the front part 1A of the barrel 1, and the clip 6 is moved.
By inverting the handle and further fitting the knob cover 4 into the mouthpiece 2 of the knob-type sharp pencil body to the state shown in FIG. 3, writing can be performed without the clip 6 getting in the way.

Although all of the above-mentioned embodiments have been described using a combination of a mechanical pencil body and a ballpoint pen body, the cursive body may be of any other type, such as a fountain pen, a felt-tip pen, or a marker.

This invention as explained above is constructed by providing a fixing ring on the shaft cylinder so that it can slide back and forth in the axial direction, and reversibly attaching a protrusion provided at the rear of the clip to a locking hole in the fixing ring. It is characterized by this. Therefore, the clip does not get in the way when writing no matter which of the cursive fonts protruding from both ends of the barrel is used, and the direction of the clip can be changed according to the frequency of use of the cursive fonts provided at both ends. It is something that plays.

Furthermore, this design has two locking ridges on the front and rear of the shaft cylinder, and a fixing ring can be locked between the two locking ridges. Therefore, by locking between the locking ridges on the side of the cursive body that does not use a fixing ring when writing, the two locking ridges on the side of the cursive body that is used when holding the barrel prevent the hand from slipping. This also has the effect of making it extremely easy to write.

[Brief explanation of drawings]

Figure 1 is a plan view showing the clip attachment device of the double-headed composite writing instrument of this invention, and Figure 2 is A-A in Figure 1.
FIG. 3 is a cross-sectional view showing lines, and FIG. 3 is a plan view showing the state in which the ballpoint pen of FIG. 1 is used. 1... shaft cylinder, 1A... front part of shaft cylinder 1, 1B...
Rear part of shaft cylinder 1, 1C...Locking protrusion of shaft cylinder 1, 2...
...Base, 3...Ballpoint pen body, 4...Knob cover, 5...Fixing ring, 5A...Latching hole of fixing ring 5, 6...Clip, 6A...Protrusion of clip 6.

Claims (1)

[Scope of utility model registration request] In a double-headed composite writing instrument with a writing body protruding from both ends of the barrel, two locking protrusions 1C are provided on the front part 1A and rear part 1B of the barrel 1, and the barrel 1 can be slid back and forth in the axial direction. A fixing ring 5 is provided on the clip 6, and a protrusion 6A provided at the rear of the clip 6 is reversibly inserted into a locking hole 5A of the fixing ring 5 that is locked between the two locking protrusions 1C. Features a clip attachment device for double-headed composite writing instruments.