JPS6319180Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a writing instrument in which a core body is stored in each of a plurality of core chambers arranged radially within the outer shaft, and the core bodies are appropriately selected and used. For example, in the case of a pencil lead, lead powder is generated due to the rubbing of the lead during the selection operation, and the lead powder is mixed and mixed, and the color of each lead becomes unclear. In addition, in the case of ballpoint pens and sharp pencils, ink and core powder from the writing part at the tip of the core adhere to the inside of the writing instrument, causing color mixing and causing the individual writing colors of the core to change. The purpose is to prevent the problem of blurring as much as possible. Moreover, the above-mentioned problem appears in the external appearance when the outer shaft is made of a transparent body.

The present invention has been made with the aim of solving the above-mentioned problems, and will be described in more detail below based on an embodiment shown in the accompanying drawings.

In FIG. 1, reference numeral 1 indicates an outer shaft, and within the outer shaft 1, a plurality of core chambers 3..., which are partitioned in the longitudinal direction by walls indicated by reference numerals 2..., are arranged radially. Each of the core chambers 3... has a lid body indicated by reference numeral 4... disposed facing each other,
Further, core bodies 5 for pencil leads, ballpoint pen refills, sharp pencils, etc. are housed inside, respectively.

(See FIG. 2) The lid body 4 is integrally connected at its base by a connecting portion indicated by reference numeral 6. (See FIG. 3)
. . . is fixed to the outer shaft 1 by press-fitting or contacting, and a protrusion 7 protruding outward is formed in the vicinity of the connecting portion 6. Inside the outer shaft 1, a center shaft indicated by reference numeral 8 is disposed so as to be movable forward and backward, and also rotatable.In the front part of the center shaft 8 (on the left side in FIG. 1), the core body 5 is disposed. A core gripping means 9 for gripping and releasing the outer shaft 1 in cooperation with the front end of the outer shaft 1 is provided in series, and a core guide hole 10 is communicated with the core gripping means 9 from an approximately intermediate portion to a rear portion. has been formed. The core guide hole 10 is configured to face and communicate with one of the core chambers 3 through a longitudinal opening 11, and also allows the lid 4 to be inserted therein. The rear part of the center shaft 8 (the first
On the right side in the figure, a pressing piece indicated by reference numeral 12 is formed integrally or by fixing a separate member to correspond to the opening 11, and the pressing piece 1
2, as the center shaft 8 moves forward, the core chamber 3...
, and is adapted to press the protrusion 7 of the lid 4 toward the axis. Reference number 1
The member indicated by 3 is an elastic member, which is interposed between the stepped portion 14 provided inside the outer shaft 1 and the stepped portion 15 provided outside the central shaft 8, so that the inner shaft 8 is always positioned rearward with respect to the outer shaft 1. It is designed to repel bullets.

Next, the operation of the present invention will be explained.

In order to select a desired core among the cores 5 stored in each of the plurality of core chambers 3, hold the rear end of the center shaft 8 with your fingers in the state shown in FIG. and rotate it about the center shaft 1. With this rotation, the opening 11 and the pressing piece 12 are also rotated at the same time.
Both can be made to face the core chamber 3 in which the desired core body 5 is housed. After the opening 11 of the core guide hole 10 and the pressing piece 12 are opposed to the core chamber 3 in which the desired core 5 is housed by the above operation, the rear end of the center shaft 8 is pressed. By moving the inner shaft 8 forward with respect to the outer shaft 1 against the elastic force of the elastic member 13, preparations for projecting the desired core body 5 to the outside of the outer shaft 1 are completed. That is, since the pressing piece 12 is also moved forward as the center shaft 8 moves forward as described above,
The pressing piece 12 is inserted into the core chamber 3, presses the protrusion 7 of the lid 4, and is pushed down in the axial direction, so that the core chamber 3, the core guide hole 10, and the core gripping means 9 are in communication with each other. This is because a guide hole for the core body 3 to the core body gripping means 9 is formed. (See FIG. 4) Furthermore, as the inner shaft 8 moves forward, the core gripping means 9 is released from cooperation with the tip of the outer shaft 1 and is expanded, so that the tip of the outer shaft 1 is held downward. If you point it towards the core body 5
is projected from the core chamber 3 to the outside of the outer shaft 1 through the core guiding hole 10 and the core gripping means 9 due to its own weight. After adjusting the protruding length by supporting the tip of the protruding core body 3 with a finger or the like, the above-mentioned pressing force on the center shaft 8 is released, and the center shaft 8 is moved to the resilient member 13.
Due to the elastic force of the outer shaft 1, the outer shaft 1 is retreated to the rear, and as the center shaft 8 retreats, the core gripping means 9 again cooperates with the tip of the outer shaft 1 to grip the core 5 and make it ready for writing. . To store the protruding core body 5 into the core chamber 3,
After the above-described operation, the tip of the outer shaft 1 may be directed upward. Through this operation, each component is positioned in the state shown in FIG. 4, and by directing the tip of the outer shaft 1 upward, the core body 5 is guided by the lid body 4 tilted by its own weight, and the core body 5 is guided by the lid body 4 tilted by its own weight. Fall into room 3. After this, when the pressing force on the center shaft 8 is released, the center shaft 8 is retracted with respect to the outer shaft 1, and as a result of this retraction, the diameter of the core gripping means 9 is reduced by cooperation with the tip of the outer shaft 1. Furthermore, when the pressure on the protrusion 7 by the pressing piece 12 is released, the lid body 4 is positioned outside the core guide hole 10, and the core chamber 3 can be closed and the storage state shown in FIG. 1 can be achieved. .

According to the present invention as described above, a lid body is arranged corresponding to each of the plurality of core chambers, and the lid body blocks the center shaft and the core chamber which rotate relatively. Therefore, the core is made up of friction caused by rotation during the selection operation, and, for example, when the core is a pencil lead, the generation of core powder is prevented as much as possible, and
Even when the core protrudes and falls into the core guide hole, it is guided by a dedicated lid, so all the contact parts of the core are limited to the vicinity of the core gripping means, and the core powder is Even if the mixture is mixed, it can be easily discharged to the outside. Therefore, it is possible to prevent as much as possible the adhesion of lead powder from other lead bodies to the lead chamber or the lead body, and it is possible to prevent the writing color from becoming unclear or from staining the inside of the writing instrument, which has a great practical effect. be.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing one embodiment of the present invention;
The drawings are a sectional view taken along the line A-A in FIG. 1, FIG. 3 is a perspective view showing the lid, and FIG. 4 is an explanatory diagram of the operation. 1... Outer shaft, 3... Core chamber, 4... Lid body, 5...
Core, 7... Protrusion, 8... Center shaft, 9... Core gripping means, 10... Core guide hole, 11... Opening.
12... Pressing piece.

Claims (1)

[Scope of utility model registration request] an outer shaft, a plurality of core chambers arranged radially within the outer shaft, and a plurality of core bodies that can be stored in the core chambers;
A core guide hole having an opening that can face one of the plurality of core chambers is formed, and a core gripping means for gripping and releasing the core is connected to the front part thereof, and the core body is moved forward and backward with respect to the outer shaft. an elastic lid body positioned between the center shaft and the core chambers and facing each other and formed with an outward protrusion at a desired location; A multi-core storage type brush instrument, characterized in that it has a pressing piece formed on the center shaft so that one of the protrusions can be pressed in the axial direction when the center shaft advances, and corresponds to the opening.