JP2539012Y2 - Out-of-the-box writing instrument - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is a retractable writing instrument in which the writing portion at the tip of the refill is projected and immersed from the tip of the barrel, and moves back and forth with respect to the barrel. And a clip protruding from a through hole in a side wall of the barrel so as to enable the writing portion to be released from the through hole.

(Prior Art) A writing implement of the kind described above is disclosed, for example, in Japanese Utility Model Application Laid-Open No. 61-107590. As the locking portion, a ball tube, that is, a protrusion on the shaft tube side of a clip front portion that forms a clamping force between the shaft tube and the shaft tube so as not to fall when carrying the device in a pocket or the like is used. This is because the shaft cylinder is provided with not only a through hole for moving the clip back and forth, but also a portion for locking the ball portion of the clip when the clip advances.

(Problem to be Solved by the Invention) Since the ball portion sandwiches clothing and the like between the barrel and the ball portion, it must be easily detached when desired, in addition to preventing falling off, and must not damage the cloth or the like. There are various demands for the shape, such as having to be done. However, satisfying the function of the ball portion as the locking portion imposes formal restrictions. For example, in order to satisfy the certainty of locking, the rear wall surface of the ball portion is made to be steep, and this may cause damage to the cloth and the like. In addition, the clip having the projection locking mechanism portion of the writing portion becomes a relatively bulky member,
The installation of this member has placed a heavy burden on the assembly work.

(Means for Solving the Problems) The present invention is a retractable writing instrument in which a writing portion at the tip of a refill is projected and immersed from the tip of a barrel, and is capable of moving back and forth with respect to the barrel. A clip protruding from a through hole in a side wall of a barrel is provided with a releasable locking portion for the barrel to ensure that a writing portion is in a projected state. A shaft and a rear shaft mainly housing a refill projection locking mechanism, and having a rear shaft having a bottomed cylindrical shape. The through hole is formed in the rear shaft, and the writing state of the writing portion is secured. The clip is provided at a rear portion of a connection portion of an inner shaft portion located in a shaft cylinder connected via a connection portion to a protruding portion of the clip from a through hole of a rear shaft. By displacing a shaft portion in a direction protruding from the barrel, the barrel An in-and-out type writing implement that is to be locked against the subject is a gist.

(Example) An example is shown in FIG. Reference numeral 1 indicates the front axis,
A refill 3 urged rearward by an elastic member 2 such as a coil spring is accommodated therein. Reference numeral 4 denotes a writing portion at the tip of the refill 3, which can protrude and retract from the tip of the front shaft 1. Although the illustrated writing section 4 is drawn with a ball-point pen using water-based or oil-based ink in mind, it may be an appropriate writing section such as a fiber pen or a synthetic resin pen. A rear shaft 5, which forms a shaft cylinder together with the front shaft 1 in this example, is mounted behind the front shaft 1 by press-fitting, screwing, or the like. This attachment is often detachable from the front shaft 1 in the general case of not being disposable. A through hole 6 is formed in the rear shaft 5, and a clip 7 protrudes from the through hole 6. Reference numeral 8 indicates a ball portion. The clip 7 has a leaf spring 11 made up of a leaf spring 9 and a tubular body 10, and the tip of the leaf spring 11 contacts the rear end of the refill 3. The elasticity of the leaf spring 11 raises the rear part of the clip 7 upward in the drawing. The clip 7 receives the rear urging force of the resilient member 2 via the refill 3 while receiving the force of the leaf spring 11 and
At the rear end of the through hole 6. In the state shown in the drawing, this locking is performed by the rear end of the connecting portion 14 between the projection 12 from the rear shaft 5 of the clip 7 and the inner shaft 13 located in the rear shaft 5. ing. Here, the inner shaft portion 13 in the present example includes the leaf spring 11 and a fixing portion 15 at the rear of the leaf spring 9 extending rearward from the connecting portion 14. Reference numeral 16 indicates the front shaft 1.
And 17, a non-slip portion when the clip 7 is advanced.

As described above, FIG. 1 shows the writing section 4 at the tip of the refill 3.
The state at the time of immersion is shown. FIG. 2 shows the state at the time of the protrusion. To reach the state shown in FIG. 2 from the state shown in FIG. Good. When the ball 8 falls into the hole 16, there is a pleasant impact and the locking position is confirmed. Of course, hole 16
May not be for causing the user to feel this impact. Moreover, since it is not a portion where the locking is actively performed unlike the conventional one, the shape of the ball portion 8 may be a desired one. Engagement is ensured by lifting the rear portion of the clip 7 upward in the drawing by the force of the leaf spring portion 11. That is, a part of the rear end portion of the fixing portion 15 is locked to the rear end of the through hole 6. Reference numeral 18 is a locking portion in this example.
In order to return from the state of FIG. 2 to the state of FIG. 1, for example, the rear end portion of the protruding portion 12 of the clip 7 may be pressed toward the inside of the rear shaft 5.

FIG. 3 is an enlarged view of this locking state in FIG. 2, in which the rear end of the through hole 6 and the locking portion 18 are inclined,
The locking is made more secure. The locking can be appropriately performed as shown in an example in FIG. 4th
As shown in the figure, the fixing portion 15 is formed in a stepped shape to stabilize the amount of lifting from the rear shaft 5, and in order to easily give the inclination as shown in FIG.
As shown in FIG. 5, the rear shaft 5 is not formed by the outer member 19 and the inner member 20 and is not locked in the through hole 6.
As shown in the figure, it is possible to make a recess 21 formed by the inner member 20.

Next, another example is shown in FIG. In this embodiment, the rear lifting force of the clip 7 by the leaf spring 9 is not applied. The leaf spring 9 is used for absorbing the shock when the writing part 4 is immersed, but the force for lifting the rear part of the clip 7 is secured by the elastic body 22 fixed to the rear shaft 5.

Various other methods can be used. For example, although an example is shown in FIG. 6, the locking portion 18 may not be formed at the rear end portion of the fixing portion 15. In addition, the members can be appropriately integrated and formed into multiple members. For example, instead of using the front shaft 1 and the rear shaft 5 as shaft cylinders, it is possible to use a front shaft having a separable front shaft. It is also possible to form the writing portion protruding state using the principle of leverage, for example, without using the leaf spring 9 or the resilient body 22 for positive biasing. Can also. In addition, the inner shaft portion 13 can be formed as a single component instead of the leaf spring 9. Therefore, if necessary, a clip having the same biasing force as the leaf spring 9 or the elastic body 22 can be provided. You can also. Further, what is called a double knock type is appropriate, and therefore, a mechanical pencil or the like can be used.

(Effects of the Invention) The retractable writing instrument of the present invention is a retractable writing instrument in which the writing portion at the tip of the refill is protruded and immersed from the tip of the barrel. A clip protruding from a through hole in a side wall of a barrel is provided with a releasable locking portion for the barrel to ensure that a writing portion is in a projected state. A shaft and a rear shaft mainly housing a refill projection locking mechanism, and having a rear shaft having a bottomed cylindrical shape. The through hole is formed in the rear shaft, and the writing state of the writing portion is secured. The clip is provided at a rear portion of a connection portion of an inner shaft portion located in a shaft cylinder connected via a connection portion to a protruding portion of the clip from a through hole of a rear shaft. By displacing a shaft portion in a direction protruding from the barrel, the barrel It is not necessary to satisfy the function of the ball portion as a locking portion, so that it is possible to prevent the ball portion from damaging the cloth and the like, and also to protrude and sink the writing portion. The writing tool can be made simple, and the assembling / writing type writing instrument can be easily assembled and manufactured.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an example of the present invention, and FIG.
FIG. 3 is a cross-sectional view of a main part in a state where the writing portion is protruded, and FIG.
FIG. 4 is an enlarged view of a portion A, FIG. 4 to FIG. 6 are diagrams corresponding to FIG. 3 showing an example of a modification, and FIG. 1 ... front shaft, 2 ... resilient member, 3 ... refill, 4 ...
... writing part, 5 ... rear shaft, 6 ... through-hole, 7 ... clip,
Reference numeral 8: ball portion, 9: leaf spring, 10: tubular body, 11: leaf spring portion, 12: projecting portion, 13: inner shaft portion, 14: connecting portion, 15 ...
... Fixing part, 16 ... Hole, 17 ... Non-slip part, 18 ... Locking part, 19 ... Outer member, 20 ... Inner member, 21 ... Recess, 22 ...
Elastic body.

Claims (1)

(57) [Scope of request for utility model registration] 1. A retractable writing instrument in which a writing portion at the tip of a refill projects and retracts from the tip of a barrel, and protrudes from a through hole in a sidewall of the barrel so as to be able to move back and forth with respect to the barrel. The clip provided is provided with a releasable engaging portion with respect to the barrel to ensure that the writing portion protrudes, wherein the barrel is mainly configured to accommodate a refill and a refill is mainly protruded. The locking mechanism is housed, and a rear shaft having a bottomed cylindrical body shape is formed. The through hole is formed in the rear shaft, and the locking portion for ensuring the writing portion protruding state is formed by the clip. Of the rear shaft is provided at a portion behind the connecting portion of the inner shaft portion located in the shaft tube connected to the projecting portion from the through hole through the connecting portion, and the inner shaft portion projects from the shaft tube. To be locked to the barrel by displacing Retractable writing instrument made.