JP2005246871A - Composite shaft holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To avoid the interference of a shaft with another when it is switched between a state of readiness for use and a state of retraction, in a composite shaft holder which is switchable between the state of readiness for use wherein the shaft selected from a plurality of shaft retracted in a retraction tube is advanced and the tip is projected from the tip of the retraction tube and the state of retraction wherein the tips of all of the shafts are retracted in the retraction tube. <P>SOLUTION: Guide parts 12a which separate the respective tips of the shafts 20 from each other and guide the shafts 20 forward and backward between the state of readiness for use and the state of retraction are provided in the holding tube 12. The guide parts 12a are provided straight and the tips are made openings 12b wherefrom the tips of the shafts 20 can be projected. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention provides a usable state in which a shaft selected from a plurality of shafts stored in a storage cylinder is advanced by a feeding operation, and the tip of the shaft is protruded from the tip of the storage cylinder And a composite shaft body holder that can be switched between a storage state in which the tips of all shaft bodies are stored in a storage cylinder.

  Conventionally, as this type of composite shaft holder, those described in Patent Documents 1, 2, 3, and 4 are known. What is described in these documents is that a shaft body selected from a plurality of shaft bodies housed in the front outer cylinder is obtained by rotating the rear outer cylinder with respect to the front outer cylinder. The shaft can be switched between a usable state in which the tip of the shaft body protrudes from the tip of the front outer cylinder and a storage state in which the tips of all the shaft bodies are housed in the front outer cylinder.

  Since the shaft bodies are alternately moved back and forth in the front outer cylinder, at the time of switching, the shaft bodies may come into contact with each other or may contact the inner peripheral surface of the front outer cylinder. There is a possibility that a part of the material included in the shaft body is transferred to the inner peripheral surface of the shaft body or the front outer cylinder, and the material is transferred to other shaft bodies to cause a color transfer or the like. Alternatively, the shaft itself may be damaged by the contact.

Japanese Patent Publication No. 6-30993 Japanese Utility Model Publication No. 4-113998 Japanese Utility Model Publication No. 4-128888 Utility Model Registration No. 2505437

  The present invention has been made in view of such a problem, and its purpose is to hold a composite shaft body that can avoid interference with other shaft bodies when the shaft body is switched between a usable state and a stored state. Is to provide the ingredients. Another object of the present invention is to provide a composite shaft holder that is less likely to damage the shaft itself.

In order to achieve the above-mentioned object, according to the first aspect of the present invention, the shaft body selected from the plurality of shaft bodies housed in the housing cylinder is advanced by a feeding operation, and the shaft body of the shaft body is advanced. In a composite shaft holder that can be switched between a usable state in which the tip protrudes from the tip of the storage tube and a storage state in which the tips of all shaft members are stored in the storage tube,
A guide portion for guiding the shaft body back and forth between the usable state and the housed state is provided in the storage cylinder.

According to the second aspect of the present invention, the shaft body selected from the plurality of shaft bodies accommodated in the storage cylinder is advanced by the feeding operation, and the tip end of the shaft body protrudes from the tip end of the storage cylinder. In a composite shaft body holder that can be switched between a usable state and a storage state in which the tips of all shaft bodies are stored in a storage cylinder,
A guide portion for guiding each shaft body in a straight line between the usable state and the stored state is provided in the storage cylinder.

  A third aspect of the invention is characterized in that the guide portion according to the first or second aspect is provided between a plurality of shaft bodies accommodated in a storage cylinder.

  The invention according to claim 4 is characterized in that an opening for projecting the tip of each shaft body is formed at the tip of the storage cylinder according to any one of claims 1 to 3.

  According to a fifth aspect of the present invention, the opening according to the fourth aspect is characterized in that the opening is arranged at a position eccentric from an axis of the storage cylinder.

  According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the outer contour shape of at least a part of the cross section provided with the guide portion of the storage cylinder is a non-circular shape. It is characterized by that.

  The invention according to claim 7 is the one according to any one of claims 1 to 6, wherein the guide portion includes an advance that prevents further advancement of the shaft body in a usable state of the shaft body. A blocking portion is provided.

  According to the first aspect of the present invention, the front end of each shaft body is guided back and forth between the usable state and the housed state by the guide portion, so that interference with other shaft bodies can be avoided.

  According to invention of Claim 2, since the front-end | tip of each shaft body is guide | induced to a straight line between the usable state and the accommodation state by the guide part, when a shaft body moves back and forth, The shaft body can be prevented from being damaged without being bent.

  According to the invention described in claim 3, since the guide portion is provided between the shaft bodies, when a certain shaft body moves back and forth, a shaft body other than the certain shaft body moves back and forth the shaft body. When another shaft body moves back and forth, a shaft body other than the other shaft body can guide the other shaft body back and forth.

  According to the fourth aspect of the present invention, since each of the shaft bodies is provided with a dedicated opening, it is possible to avoid interference with other shaft bodies and to prevent color transfer and the like.

  According to the fifth aspect of the invention, the opening is arranged at an eccentric position, so that the shaft body is not bent in the usable state, and the shaft body can be prevented from being damaged.

  According to invention of Claim 6, it is easy to hold | grip because the outer contour shape of at least one part of a storage cylinder is a non-circular shape, and the thickness of the part of a guide part becomes thick depending on the number of shaft bodies. Is prevented, and sink marks can be prevented.

  According to the seventh aspect of the present invention, in the usable state of the shaft body, the advancement position of the shaft body can be maintained by the advance prevention portion, and at that time, a force such as a bending moment is applied to the shaft body. It can be prevented from acting.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following embodiments do not limit the present invention.

  FIG. 1 is an overall view showing a composite shaft holder according to an embodiment of the present invention, FIGS. 2 and 3 are longitudinal sectional views thereof, and FIG. 4 is a plan view thereof.

  The composite shaft holder 10 includes a storage cylinder 12 and an operation cylinder 14. The storage cylinder 12 and the operation cylinder 14 are connected via a guide cylinder 18, and the operation cylinder 14 is connected to the storage cylinder 12 so as to be rotatable, knocked, and detachable.

  Specifically, as shown in FIG. 5, vertical ribs 18 d formed on the outer peripheral surface of the guide tube 18 are formed in the vertical grooves 12 e extending in the axial direction formed on the inner peripheral surface of the rear end of the storage tube 12. The storage cylinder 12 and the guide cylinder 18 are integrated in the rotation direction after the storage cylinder 12 is attached to the guide cylinder 18. However, it is possible to form vertical ribs in the storage cylinder 12 and vertical grooves in the guide cylinder 18.

  The guide cylinder 18 extends rearwardly in the rear interior of the operation cylinder 14, and includes a pair of engagement portions 18 a that are engaged with an annular step portion 14 a formed in the operation cylinder 14 at the rear end. . The guide tube 18 is connected to the operation tube 14 so as to be rotatable and relatively movable in the axial direction within a predetermined range by the locking portion 18a being locked to the annular step portion 14a. A plurality of guide grooves 18 b extending in the axial direction are formed in the guide cylinder 18 inserted into the operation cylinder 14.

  Further, a cam engaging projection 14c (shown by a dotted line in FIG. 2) is formed on the inner peripheral surface of the operation cylinder 14, and the cam engaging projection 14c extends in the axial direction.

  Further, a tail plug 26 is attached to the rear end of the operation tube 14, and the front end of the central shaft 26 a extending axially from the rear end inner surface of the tail plug 26 is a pair of locking portions 18 a of the guide tube 18. The locking portion 18a is inadvertently tilted inward by the central shaft 26a, thereby preventing the locking from the annular step portion 14a.

  A plurality of, in this example, two shaft bodies 20, 20 are stored in the storage cylinder 12. In this example, the shaft body 20 includes a core 30 that is a rod-like object and a feeding mechanism 32 that feeds the core 30. As shown in FIG. 6, the leading end of a thin rod 34 is inserted into the rear portion of the core 30 and connected to the thin rod 34, and the feeding mechanism 32 feeds the thin rod 34 by a predetermined amount. The core 30 is fed out. For this purpose, the feeding mechanism 32 includes a chuck 36 for fastening or loosening the thin rod 34, a chuck ring 38 on the outer peripheral side of the chuck 36 and capable of fastening the chuck 36, and a rearward movement of the chuck ring 38. A sleeve 40 for restricting the sleeve 36, a tip 41 for screwing the sleeve 36 and the chuck 36 and the chuck ring 38 therein, a joint 43 for press-fitting the rear end of the chuck 36, and a joint 43. A pipe 42 in which the rear end of the thin bar 34 is accommodated, a chuck spring 44 inserted between the sleeve 40 and the tip of the joint 43 and biasing the chuck 36 rearward, and screwed to the tip of the sleeve 40. The protection pipe 46 that protects the periphery of the core 30 and the packing 48 that holds the thin rod 34 in the tip 41 are provided. The protective pipe 46 has a small diameter at the front part and a large diameter at the rear part, and the boundary part is a step part 46a facing forward. The chuck 36 can be moved forward and backward relative to the sleeve 40. Note that any or all of the tip 41, the protective pipe 46, and the sleeve 40 can be integrated, and the joint 43 and the pipe 42 can also be integrated. Furthermore, the packing 48 can be omitted.

  The slider 22 is connected to the rear end of the pipe 42 of the shaft body 20. The sliders 22 are slidably fitted into the corresponding guide grooves 18b of the guide cylinder 18, respectively. A return spring 24 is inserted between the flange 18c formed at the center in the longitudinal direction of the guide cylinder 18 and the slider 22, and the return spring 24 constantly urges the slider 22 backward. Yes.

  The plurality of sliders 22 can move back and forth in the operation cylinder 14 while being in sliding contact with each other and being guided by the guide grooves 18b. A cam surface 22 a inclined with respect to the axial direction is formed on the outer peripheral surface of each slider 22 facing the inner peripheral surface of the operation cylinder 14. The cam surface 22a is in sliding contact with the tip of the cam engagement protrusion 14c of the operation cylinder 14. Further, a locking recess 22b (shown by a dotted line in FIG. 3) is formed at the rearmost end of the cam surface 22a, and the tip of the cam engagement protrusion 14c can be locked in the locking recess 22b. ing.

  As described above, a plurality of guide portions 12 a are formed in the front portion of the storage cylinder 12 in which the shaft body 20 is stored, in accordance with the number of the shaft bodies 20. As shown in FIGS. 7 to 9, the guide portion 12a is a long hole having a circular cross section, extends linearly in the axial direction, and is aligned with the guide groove 18a of the guide cylinder 18 in a straight line. In the illustrated example, the guide portion 12a has a shape coupled with the adjacent guide portion 12a from the rear of the storage cylinder 12 to the middle in the front-rear direction, but from the middle in the front-rear direction to the tip, the adjacent guide portion 12a. And are completely separated. It is also possible to provide a completely separated portion over almost the entire length of the storage cylinder 12. As in this example, a plurality of guide portions 12a may be completely separated from each other at least at the distal end portion of the storage cylinder 12.

  And the front-end | tip of the guide part 12a becomes the opening 12b from which the front-end | tip of the shaft body 20 can protrude. Therefore, the opening 12b is provided for each shaft body 20, and is positioned eccentrically from the shaft center (see FIG. 6). The guide portion 12a is formed with a step portion 12d facing rearward as a forward blocking portion (see FIG. 2).

  Further, as shown in FIGS. 4 to 9, the outer contour of the storage cylinder 12 is a non-circular flat portion with a part of its side cut so as to match the shape of the guide portion 12a. 12c. Thereby, it can prevent that the thickness in the guide part 12a of the storage cylinder 12 becomes thick too much, and can prevent the sink mark at the time of shaping | molding.

  The operation of the composite shaft holder 10 configured as described above will be described. When the shaft body 20 is not in use, as shown in FIG. 3, the tip of each shaft body 20 is in the guide portion 12 a and stored in the storage cylinder 12. Each shaft body 20 is in an eccentric position shifted from the axis in the storage cylinder 12. At this time, the tip of the cam engagement projection 14 c of the operation cylinder 14 is near the forefront position of the cam surface 22 a of each slider 22.

  On the other hand, when any of the shaft bodies 20 is used, a feeding operation for rotating the operation cylinder 14 in any direction with respect to the storage cylinder 12 is performed. As a result, relative rotation occurs between the guide cylinder 18 and the operation cylinder 14 that rotate integrally with the storage cylinder 12, and further, between the slider 22 and the operation cylinder 14 that cannot rotate relative to the guide cylinder 18. Since relative rotation occurs, the cam surface 22a of one of the sliders 22 slidably contacts the tip of the cam engagement projection 14c of the operating cylinder 14 and moves forward against the urging force of the return spring 24. Thus, the shaft body 20 connected to the slider 22 moves forward, and the tip of the shaft body 20 moves through the guide portion 12a of the storage cylinder 12 and protrudes from the opening 12b. When the locking recess 22b at the rearmost end of the cam surface 22a of the slider 22 is locked to the cam engagement protrusion 14c of the operation cylinder 14, the slider 22 is held in that position, and the tip of the shaft body 20 is the storage cylinder. Since the state which protruded from 12 opening 12b is maintained, it will be in the usable state which can use the front-end | tip of the core 30 of the shaft body 20, as shown in FIG.

  When the shaft body 20 moves between the storage state and the usable state, the shaft body 20 does not bend because the shaft body 20 moves on a straight line while maintaining the eccentric state in the storage cylinder 12. 20 damage can be prevented. In addition, since the tip of the shaft body 20 does not contact the other shaft body 20 or the inner peripheral surface of the storage cylinder 12 and the opening 12b is also individual, it is possible to avoid interference with other shaft bodies 20. It is possible to prevent color migration and mixing of materials.

  In the usable state of the shaft body 20, the stepped portion 46 a of the protection pipe 46 of the shaft body 20 abuts against the guide portion 12 a of the storage cylinder 12, so that further advancement is not possible. If the core 30 is consumed while the core 30 of the shaft body 20 is being used, the cam engagement protrusion 14c of the operation cylinder 14 knocks the slider 22 when the operation cylinder 14 is knocked against the storage cylinder 12. The slider 22 pushes the pipe 42 of the feeding mechanism 32 forward. At this time, since the stepped portion 46a of the protective pipe 46 is in contact with the stepped portion 12d of the guide portion 12a, the chuck 36 connected to the pipe 42 is relatively connected to the sleeve 40 integrated with the protective pipe 46. The chuck 36 can feed the thin bar 34 by a predetermined amount in order to move forward and loosen the thin bar 34. In this way, the lead 30 is sent forward. Since the protective pipe 46 and the sleeve 40 integrated therewith can contact the guide portion 12a substantially perpendicularly, it is possible to prevent a bending moment from being generated in the shaft body 20 during the knocking operation. it can.

  Since the shape of the storage cylinder 12 is flat, it is easy to hold, and even if the shaft body 20 in a usable state protrudes from an eccentric position, it is easy to use.

  In the example from FIG. 1 to FIG. 9, two shaft bodies are housed, but the present invention is not limited to this, and the present invention can be similarly applied when there are three or more shaft bodies. The shaft body is not limited to holding a rod-shaped core, but can also hold liquids such as writing and cosmetic inks.

  FIG. 10 is a partially cut perspective view showing another embodiment. In the above embodiment, the guide portion is formed on the inner peripheral surface of the storage cylinder 12, in other words, the guide portion is provided between the storage cylinder 12 and the shaft body 20, but in the example of FIG. The guide portion is provided between the shaft body 20 and the shaft body 20. That is, a flat sliding surface 20 a that slides on the adjacent shaft body 20 and extends in the axial direction is formed on the outer peripheral surface of the shaft body 20 other than the rod-like object 30. 20 a slides on the sliding surface 20 a of the adjacent shaft body 20. Thereby, when one shaft body 20 moves, the other shaft body 20 can guide the one shaft body 20 back and forth between the usable state and the housed state. When the shaft body 20 to be moved is changed to the other shaft body 20, the other shaft body 20 is guided back and forth between the one shaft body 20 in the usable state and the housed state.

  FIG. 11 is a modification of FIG. 10, in which the guide portion is provided between the shaft body and the shaft body, and is also provided between the storage cylinder and the shaft body. A sliding surface 20a formed on the body 20, an axial longitudinal groove 12a formed on the inner peripheral surface of the storage cylinder 12, and a longitudinal shaft formed on the shaft body 20 and slidably fitted into the longitudinal groove 12a. It is comprised from the rib 20b. Thereby, the shaft body 20 to be moved can be guided back and forth between the usable state and the stored state. It is also possible to form the vertical rib in the storage cylinder and the vertical groove in the shaft body.

  FIG. 12 is a further modified example of FIG. 10, in which three shaft bodies 20 are accommodated in the storage cylinder 12. A sliding surface 20a of a certain shaft body 20 slides on a sliding surface 20a of the adjacent shaft body 20. Thereby, one shaft body 20 to be moved can be guided back and forth between the remaining two shaft bodies 20 in the usable state and the housed state. When the shaft body 20 to be moved is replaced with another shaft body 20, the other shaft body 20 is guided back and forth between the remaining usable shaft body 20 and the housed state.

  In the above-described embodiment, the shaft body can be selectively extended by rotating the operation cylinder with respect to the storage cylinder. However, the present invention is not limited to this, and the operation unit is attached to the storage cylinder. The invention can also be applied to an apparatus that can be fed out by an arbitrary operation such as knocking.

  In the above embodiment, the core of the rod-shaped object 30 can be any rod-shaped object such as an eye liner, a lip liner, an eyebrow liner, a pencil core, an eraser core, etc. Tools can be configured. Particularly, since the shaft body is kept hygienic by the guide portion 12a, it is suitable for cosmetic use.

It is a general view showing the compound axis body holder concerning an embodiment of the present invention. It is a longitudinal cross-sectional view of the composite shaft body holder of FIG. 1 when one shaft body is in a usable state. It is the longitudinal cross-sectional view which cut and saw the opposite side to FIG. 2 when all the shaft bodies are in the accommodation state. It is a top view of FIG. It is a figure showing the state which removed the storage cylinder from the operation cylinder. It is a partial longitudinal cross-sectional view of a shaft body. It is a front view of the compound-shaft holder of FIG. It is the cross-sectional view seen along line 8-8 in FIG. It is a cut perspective view of a storage cylinder and a shaft. It is a partial cutaway perspective view showing other embodiments. FIG. 11 is a partially cut perspective view illustrating a modification of FIG. 10. FIG. 11 is a partially cut perspective view illustrating a further modification of FIG. 10.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Composite shaft body holder 12 Storage cylinder 12a Guide part 12b Opening 12d Advance prevention part 14 Operation cylinder 20 Shaft body 20a Guide part 30 Core 32 Feeding mechanism 34 Narrow bar 36 Chuck 40 Sleeve 44 Chuck spring

Claims (7)

By performing the feeding operation, the shaft body selected from the plurality of shaft bodies stored in the storage cylinder is advanced and the tip end of the shaft body protrudes from the tip of the storage cylinder. In the composite shaft body holder that can be switched to a storage state in which the tip of the shaft body is stored in the storage cylinder
A composite shaft body holder, wherein a guide portion for guiding the shaft body back and forth between a usable state and a housed state is provided in the housing cylinder. By performing the feeding operation, the shaft body selected from the plurality of shaft bodies stored in the storage cylinder is advanced and the tip end of the shaft body protrudes from the tip of the storage cylinder. In the composite shaft body holder that can be switched to a storage state in which the tip of the shaft body is stored in the storage cylinder
A composite shaft body holder, characterized in that a guide portion for guiding each shaft body in a straight line between the usable state and the housed state is provided in the housing cylinder.   The composite shaft body holder according to claim 1 or 2, wherein the guide portion is provided between a plurality of shaft bodies housed in a housing cylinder.   The composite shaft body holder according to any one of claims 1 to 3, wherein an opening for projecting the tip of each shaft body is formed at a tip of the storage cylinder.   5. The composite shaft holder according to claim 4, wherein the opening is disposed at a position eccentric from the axis of the storage cylinder.   The composite shaft body holder according to any one of claims 1 to 5, wherein an outer contour shape of at least a part of a cross section provided with the guide portion of the storage cylinder is a non-circular shape. .   The composite according to any one of claims 1 to 6, wherein the guide portion is provided with an advance prevention portion that prevents further advancement of the shaft body in a usable state of the shaft body. Shaft body holder.

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