JPS6316552Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention provides a plurality of core chambers in the outer shaft, and each core chamber has a core body with a different writing color and writing width, or a core body of different types or the same type (e.g. , colored pencil leads, ballpoint pen refills, sharp pencils, etc.) are stored in a suitable combination and selectively supplied to a single gripping means, thereby making it possible to use a desired lead. , relates to a multi-lead chamber type writing instrument that ensures mutual division of the core chambers and selective supply operation.

The present invention will be described in detail below based on an embodiment shown in the accompanying drawings.

FIG. 1 is a sectional view of one embodiment of the present invention.
Reference numeral 1 indicates an outer shaft, and within the outer shaft 1, a plurality of core chambers 3 partitioned by walls indicated by reference numerals 2 are arranged radially. (Details shown in Figure 2)
The member indicated by reference numeral 4 indicates a center shaft, and a core gripping means including a collection chuck or the like indicated by reference numeral 5 is connected to the front part of the center shaft 4 (on the left side in FIG. 1), and from approximately the center part A core guide hole 7 having an opening 6 that can face one of the core chambers 3 is provided in the rear portion (right side in FIG. 1) and communicates with the core gripping means 5. Further, the center shaft 4 is arranged so as to be movable forward and backward relative to the outer shaft 1, and to be rotatable. The bases 9, 9 of a pair of lids 8, 8 having elasticity that open and close the opening 6 are attached to the center shaft 4.
The lids 8, 8 are fixedly attached to the holes 10, 10 by press fitting or the like, and protrusions indicated by reference numerals 11, 11 are provided near the bases 9, 9 of the lids 8, 8. (3rd
(Details shown in the figure) A member indicated by reference numeral 12 is a rotating member, which is rotatably arranged at the rear part of the outer shaft 1, and an engaging piece indicated by reference numeral 13 is provided inside the rotating member 12. The protruding portions 11, 11 are disposed in a protruding manner so as to be positioned between the protruding portions 11, 11 as the inner shaft 4 moves forward with respect to the outer shaft 1, so that the protruding portions 11, 11 are separated from each other. (Details shown in FIG. 4) Also, the rotating member 12
and the center shaft 4 have a longitudinal groove 14 provided therein.
A protrusion 15 slidably fitted into the groove 14 allows for mutual rotation and longitudinal movement. Reference numeral 16 is an inclined surface provided in the core guide hole 7, and the core guide hole 7 becomes larger in diameter toward the front of the center shaft 4. A member designated by reference numeral 17 is a resilient member such as a coil spring, and is interposed between the outer shaft 1 and the center shaft 4 so as to always resiliently repel the center shaft 4 rearward with respect to the outer shaft 1. Reference numerals L are core bodies as described above, which are housed in the core chambers 3, and are gripped by the core gripping means 5 as required.

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

FIG. 1 shows a state in which the core body L is housed in the core chamber 3, and the center shaft 4 is positioned in the retracted position with respect to the outer shaft 1 by the elastic force of the resilient member 17. The diameter of the core gripping means 5 is reduced in cooperation with the tip of the outer shaft 1, and the protrusions 11, 11 are separated from the engagement piece 13 and are positioned close to each other so that the lid body 8 , 8 are adapted to close the opening 6. In this embodiment, since the lids 8, 8 are formed of rod-shaped bodies, the above-mentioned closing situation does not completely close the opening 6, and the core guide hole 7 of the core L
It closes to the extent that it prevents it from falling inside.

In this state, in order to select a desired core among the plurality of cores L, the rotary member 12 may be rotated with respect to the outer shaft 1. As the inner shaft 4 rotates in the same manner as the rotating member 12, the lids 8, 8 and the opening 6 are connected to the outer shaft 1.
Therefore, the lid bodies 8, 8 can be rotated relative to each other.
and the opening 6 can be made to face the core chamber 3 in which the desired core L is housed. The selection of the core L is completed by the above-described operation.

Next, in order to guide the selected desired lead L from the lead chamber 3 to the lead gripping means 5, make it protrude from the lead gripping means 5, and then grip it to make it ready for writing, the rear part of the center shaft 4 must be First, the portion exposed from the outer shaft 1 is pressed with a fingertip or the like to move the center shaft 4 forward with respect to the outer shaft 1 against the elastic force of the resilient member 17. As the inner shaft 4 moves forward with respect to the outer shaft 1, the lids 8, 8 and the core gripping means 5 are also moved forward, so that the lids 8, 8
The protrusions 11, 11 engage with the engagement piece 13 and are moved away from each other, and the lids 8, 8 are also moved away from each other to open the opening 6 (see Fig. 4). ) Also, the core gripping means 5 is released from cooperation with the tip end of the outer shaft 1 and expanded. Thereby, the core chamber 3, the core guide hole 7, and the core gripping means 5 are brought into communication. Next, when the tip of the outer shaft 1 is turned downward, the core L falls from the core chamber 3 through the core guiding hole 7 to the core gripping means 5 due to its own weight, and is directed outward from the core gripping means 5. stand out. The tip of the core L protruded outward in this manner is held by the other fingertip to adjust the protrusion length. After completing the adjustment, the above-mentioned center shaft 4
When the pressing force on the inner shaft 4 is released, the inner shaft 4 is resiliently repelled rearward with respect to the outer shaft 1 by the resilient force of the resilient member 17, and is moved to the rear position. As the inner shaft 4 moves rearward, the core gripping means 5 is also moved backward, and the diameter of the core gripping means 5 is reduced by cooperation with the tip of the outer shaft 1 again, thereby holding the core L. Grip it and make it ready for writing.

In order to store the core L held by the core gripping means 5 into the core chamber 3, the center shaft 4 is advanced relative to the outer shaft 1 in the same manner as described above with the tip of the outer shaft 1 facing upward. Just do it. By this operation, the core gripping means 5 is expanded, and at the same time, the lids 8, 8 are also separated and the opening 6 is opened, so that the core L is guided by its own weight from the core gripping means 5 through the core guiding hole 7. , falls into the core chamber 3. From this, when the pressing force on the center shaft 4 is released, the diameter of the core gripping means 5 is reduced again, and the lids 8, 8 are brought closer to each other as the engagement between the protrusions 11, 11 and the engagement piece 13 is released. The opening 6 is closed and the housing is in a stored state.

By sequentially repeating the above operations, a desired core L can be appropriately selected and used.

According to the present invention as described above, since a pair of lids having elasticity are provided on the rotatably arranged central shaft to close an opening that can face one of the core chambers, the lid body can be used when selecting a core body. It is possible to prevent the core from falling unnecessarily into the core gripping means or the core guide hole when the core is dropped, and when the core falls as desired, the lid is simply pressed by the center shaft. This can be done when the closure is lifted, and it has a great practical effect.

In the above embodiments, an example was described in which one engaging piece 13 was provided on the rotating member 12, but the rotating member 12 was omitted and the engaging piece 13 was installed inside the outer shaft 1 in the core chamber 3. They may be provided at respective rear positions. However, in this case, it is necessary to rotate the center shaft 4 by directly rotating the rear end of the center shaft with the fingertip. Alternatively, the plurality of engaging pieces may be arranged at the front positions of the core chambers 3 within the outer shaft 1, and the protrusions 11, 11 of the lids 8, 8 may be provided at the front portions of the lids 8, 8. It's good. Furthermore, the lids 8, 8 may be replaced with rod-shaped bodies by plate bodies, and the engaging portion that engages with the engagement piece may be replaced by the protruding portion 11 by concavely bending the lids 8, 8 to form a recessed portion 11'. (See Figure 5).

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1, FIG. 3 is a sectional perspective view of main parts, and FIG. FIG. 5 is a vertical sectional view of a main part showing another embodiment. 1... Outer shaft, 3... Core chamber, 4... Center shaft, 5...
Core gripping means, 6... Opening, 7... Core guide hole, 8... Lid, 11, 11'... Engaging portion, 13
...Engagement piece.

Claims (1)

[Claims for Utility Model Registration] 1. A core having an outer shaft, a plurality of core chambers arranged radially within the outer shaft, and an opening extending from a substantially central portion to a rear portion and capable of facing one of the core chambers. A core body gripping means for grasping and releasing the core body is provided in the front part with a body guiding hole, and a center shaft is arranged to be movable forward and backward and rotatable within the outer shaft; A pair of lids having elasticity, a pair of engaging portions provided at arbitrary locations on the lid, and an engaging piece that is positioned between the engaging portions and capable of separating the engaging portions by advancing a central axis. A multi-core chamber type writing instrument characterized by the following characteristics: 2. The multi-core chamber type writing instrument according to claim 1 of the utility model registration, characterized in that the engaging piece is disposed inside the rotating member disposed at the rear of the outer shaft. 3. The multi-core chamber type writing instrument according to claim 1, which is characterized in that a plurality of engaging pieces are arranged at positions corresponding to the respective core chambers within the outer shaft. 4. The multi-core chamber type writing instrument according to claim 3 of the utility model registration, characterized in that the engaging pieces are arranged at rear positions of the core chambers within the outer shaft. 5. The multi-core chamber type writing instrument according to claim 3 of the utility model registration, characterized in that the engaging pieces are arranged at positions in front of the core chambers within the outer shaft. 6. The multi-core chamber type writing instrument according to claim 1 of the utility model registration, characterized in that the engaging portion is provided at a rear position of the lid body. 7. The multi-core chamber type writing instrument according to claim 1 of the utility model registration, characterized in that the engaging portion is provided at the front position of the lid body. 8. The multi-core chamber type writing instrument according to claim 1 of the utility model registration, characterized in that the engaging portion is a protruding portion that protrudes outward. 9. The multi-core chamber type writing instrument according to claim 1, wherein the engaging portion is formed by concavely bending the lid.