JP2006335040A - Stick delivery container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stick delivery container capable of protruding and retracting a stick, suitable for delicately operating the stick and surely holding the stick. <P>SOLUTION: An inner cylinder 14 is slidably inserted into an outer cylinder 12, an elastic body which urges the inner cylinder 14 to back between the inner cylinder 14 and the outer cylinder 12, a chuck piece 18 which holds the stick 24 to the tip section of the inner cylinder 14 is formed, the chuck ring 20 is inserted between the chuck piece 18 and the outer cylinder 12. The stick 24 is protruded and retracted by sliding the inner cylinder 14 forward and reverse. The cross section of the stick 24 is shaped into a polygon including a triangle. The chuck pieces 18 are provided corresponding to at least two or more sides of a polygonal shape, and can press the corresponding sides. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a rod-shaped material feeding container capable of feeding and retracting a rod-shaped material such as a rod-shaped eraser, a pencil core, a crayon core, a pastel core, and an eyebrow core.

  Conventionally, what was described in patent document 1 or 2 is known as this kind of a rod-shaped thing delivery container. The rod-like object feeding container described in this document has an inner cylinder slidably inserted into an outer cylinder, and an elastic body that biases the inner cylinder backward is provided between the inner cylinder and the outer cylinder. A chuck piece for holding a rod-like object is provided at the tip of the inner cylinder, and a chuck ring is inserted between the chuck piece and the outer cylinder, and the inner cylinder is slid back and forth to feed out the rod-like object. Can withdraw.

  In such a conventional rod-shaped object feeding container, it is assumed that the cross-sectional shape of the rod-shaped object is circular, and the chuck piece has a circular peripheral surface so that it can hold a rod-shaped object having a curved peripheral surface. It comes in contact with the rod-shaped object at equal intervals in the direction.

Japanese Utility Model Publication No. 3-44552 Japanese Utility Model Publication No.5-1426

  However, in the conventional bar-shaped object feeding container, there is a problem that if the tip of the bar-shaped object, for example, the bar-shaped eraser, is worn and rounded, a delicate operation such as erasing a fine part becomes difficult. Another problem is that a large number of chuck pieces need to be provided in order to obtain a sufficient clamping force to hold a rod-like object having a curved peripheral surface with the chuck pieces.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a rod-shaped object feeding container that is suitable for causing a rod-shaped object to perform delicate operations and that can reliably hold the rod-shaped object.

  In order to achieve the above object, the invention according to claim 1 of the present invention is such that the inner cylinder is slidably fitted into the outer cylinder, and the inner cylinder is moved backward between the inner cylinder and the outer cylinder. A biasing elastic body is provided, a chuck piece that holds a rod-like object is provided at the tip of the inner cylinder, and a chuck ring is fitted between the chuck piece and the outer cylinder, and the inner cylinder slides back and forth. In the rod-like object feeding container that can draw out and retract the rod-like object, the cross-section of the rod-like object has a polygonal shape, and the chuck piece corresponds to at least two sides of the polygon. Provided so that the corresponding side can be pressed.

  According to a second aspect of the present invention, in the first aspect of the present invention, the chuck piece abuts on the rod-shaped object at a central portion of the corresponding side of the polygonal cross section of the rod-shaped object.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the chuck ring has a cross-sectional shape of the inner peripheral surface of the chuck ring that is the same polygon as the polygon of the cross-sectional surface of the rod-like object. Has a locking portion that is slidable with respect to the retaining portion formed on the inner peripheral surface of the outer cylinder and that is prevented from coming forward of the outer cylinder. It is formed corresponding to only a part of a plurality of sides of a square.

  According to a fourth aspect of the present invention, in the apparatus according to any one of the first to third aspects, the inner peripheral surface of the outer cylinder is in contact with a portion corresponding to the vertex of the polygonal cross section of the rod-like object. A portion is formed.

  According to a fifth aspect of the present invention, the elastic body according to any one of the first to fourth aspects is a coil spring, and the winding shape of the coil spring is the same polygon as the polygon of the cross section of the rod-shaped object. It is characterized by becoming.

  The invention described in claim 6 is the one described in claim 5, wherein the cross-sectional shape of the inner peripheral surface and the outer peripheral surface of the outer cylinder is the same polygon as the polygon of the cross-section of the rod-like object. It is characterized by.

  According to the present invention, the rod-like object has a polygonal shape including a triangle and a quadrilateral cross section, and thus the rod-like object has a plurality of ridge lines, so that the tip of the rod-like object is rounded due to wear. However, it becomes possible to perform delicate work using the ridgeline. In addition, the chuck pieces are provided corresponding to at least two sides of the polygon so that the corresponding sides can be pressed, and the chuck pieces abut on the flat portion of the rod-like object. It is possible to hold a rod-like material.

  According to the second aspect of the present invention, the chuck piece abuts against the rod-shaped object at the central portion of the corresponding side, whereby the rod-shaped object can be held in a well-balanced manner.

  According to the invention of claim 3, the locking portion is difficult to be molded because it is undercut, but the locking portion corresponds to only a part of the plurality of sides of the polygonal cross section. By providing, molding can be facilitated. That is, for the side where the locking portion is provided, a side that is convenient in terms of molding may be appropriately selected.For example, when the polygon is a triangle, only the two sides of the triangle are supported. A locking portion may be provided.

  According to the invention of claim 4, when the rod-shaped object is fed out, the fitting portion for applying a frictional force to the rod-shaped object is formed at a portion corresponding to the vertex of the polygonal cross section of the rod-shaped object. Since the joint portion is almost in line contact with the ridge line of the rod-like object, the frictional force of the fitting portion can be easily adjusted as compared with the case where surface contact is made.

  According to the fifth aspect of the present invention, the winding shape of the coil spring, which is an elastic body, is also polygonal, so that the rod-shaped object can be occupied without wasting space in the coil spring.

  According to the sixth aspect of the present invention, since the cross-sectional shape of the outer cylinder is also the same polygon as the rod-like object, the shape can be easily grasped by the user, and the space in the outer cylinder is wasted. The rod-like object can be occupied without any trouble.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an overall longitudinal sectional view showing an embodiment of a rod-like object feeding container according to the present invention, and FIG. 2 is an overall perspective view.

  In the figure, the rod-shaped object feeding container 10 includes an outer cylinder 12 and an inner cylinder 14 that is slidably inserted into the outer cylinder 12. The outer peripheral surface and the inner peripheral surface of each of the outer cylinder 12 and the inner cylinder 14 have a triangular cross-sectional shape in accordance with a cross-sectional shape of a rod-like object 24 described later, and include three sides constituting the main side. ing. However, the cross-sectional shape does not necessarily need to be a mathematically accurate triangle, each side may not be a straight line but may be a curve having one or more curvatures, and the vertex is not square but rounded. May be.

  A coil spring 16, which is an elastic body, is inserted between the outer cylinder 12 and the inner cylinder 14, and the spring 16 urges the inner cylinder 14 backward with respect to the outer cylinder 12. As shown in FIG. 6, the spring 16 also has a triangular winding shape in accordance with the triangular shape of the cross section of the rod-like object 24. The position of the spring 16 is not limited to the illustrated front portion in the outer cylinder 12, and can be disposed at the rear portion.

  As shown in FIGS. 3 and 10, on the inner peripheral surface of the distal end portion of the outer cylinder 12, a retaining rib (a retaining portion) 12a and a transverse sectional shape are formed at a portion corresponding to the side of the triangular shape of the transverse sectional shape. A rib for fitting a rod-like object (fitting portion) 12b is formed at a portion corresponding to the apex of the triangle, and each rib 12a, 12b protrudes in the axial center direction and extends in the axial direction.

  The rear end portion of the inner cylinder 14 protrudes from the rear end of the outer cylinder 12, and this protruding portion constitutes a knock portion 14a. A clip 14b is formed integrally with the knock portion 14a.

  As shown in FIGS. 4 and 5, three chuck pieces 18, 18, 18 are provided at the distal end portion of the inner cylinder 14, and a head 18 a of each chuck piece 18 projects from the distal end of the outer cylinder 12. ing. The chuck piece 18 is disposed corresponding to the central portion of the side of the triangular cross section of the rod-like object 24 (see FIG. 10). In addition, the plurality of chuck pieces 18 are originally set so as to expand in directions away from the axial center. Further, the gap between the adjacent chuck pieces 18 is set so that the gap between the head 18a and the rear part is narrower than the gap at the head 18a (see FIG. 5).

  A plastic chuck ring 20 is fitted between the chuck piece 18 and the outer cylinder 12. Each cross-sectional shape of the outer peripheral surface and the inner peripheral surface of the main body 20a of the chuck ring 20 is a triangle according to the cross-sectional shape of the rod-like object 24, and has three sides constituting main sides. However, here again, the cross-sectional shape does not necessarily have to be a mathematically accurate triangle, each side may be a curve with one or more curvatures instead of a straight line, and the vertex is not square but rounded. It may be.

  A part of the main body 20a is disposed on the front outer side of the outer cylinder 12, and the rear end portion of the main body 20a is slidable with respect to the outer cylinder 12 and prevents the outer cylinder 12 from coming off. Stop portions 20b, 20b extend into the outer cylinder 12. As shown in FIGS. 7 and 8, one locking portion 20b is composed of a pair of hook pieces 20c and 20c that form opposing hook-shaped heads.

  The hook pieces 20c, 20c of the locking portion 20b are slidably guided by the retaining rib 12a of the outer cylinder 12, and as shown in FIG. 11, on the enlarged head of the retaining rib 12a. When the hook pieces 20c, 20c are hooked, further advancement of the chuck ring 20 is prevented, and the outer cylinder 12 is prevented from coming off forward.

  In this case, the locking portion 20b is formed corresponding to only two sides without corresponding to each side of the triangle of the cross-sectional shape of the main body 20a in order to facilitate molding of the chuck ring 20. (See FIG. 7). That is, if it is attempted to form the locking portion 20b corresponding to each side, the hook pieces 20c and 20c are undercut, so that it is difficult to mold the mold. By providing the locking portions 20c corresponding to only selective sides (in this case, only two sides), the chuck ring 20 can be molded using a mold suitable for mass production.

  Further, projecting corners 20d, 20d, 20d projecting forward and in the axial center direction are formed at the tip of the main body 20a of the chuck ring 20, and in normal times, between the adjacent projecting corners 20d, The head portion 18a of the chuck piece 18 is fitted, and the head portion 18a of the chuck piece 18 biased rearward by the spring 16 is prevented from being displaced backward by the main body 20a and away from the axial center. It is prevented from spreading.

  In the outer cylinder 12 and the inner cylinder 14, a rod-shaped object 24, which is a triangular rod-shaped eraser having a triangular cross section, is housed. Therefore, a plurality of ridge lines are formed on the peripheral surface of the rod-like object 24. In the outer cylinder 12, the rod-like object 24 is in contact with the rod-like object fitting rib 12 b at a portion corresponding to the apex of the cross-sectional triangle (see FIG. 10).

  In the rod-shaped object feeding container 10 configured as described above, since the spread of the head 18a of the chuck piece 18 is normally prevented by the chuck ring 20, each chuck piece 18 has a cross section of the rod-shaped object 24. The rod-like object 24 is pressed against the central part of the triangular side. That is, since the chuck piece 18 is in contact with the flat surface portion of the rod-like object 24, the chuck-like object 24 can be reliably held, and the movement of the rod-like object 24 is thereby prevented. Therefore, it is possible to use the portion of the rod-like object 24 that is in front of the portion clamped by the chuck piece 18 by gripping the outer cylinder 12.

  The tip of the rod-like object 24 is worn and rounded with use, but since there is a ridge line corresponding to the apex of the triangle on the peripheral surface of the rod-like object 24, the ridge line is used to erase fine portions. Work can be done.

  When it is desired to further feed the rod-like object 24, the knock portion 14a is knocked. As a result, the chuck piece 18 and the rod-like object 24 move forward, and the chuck ring 20 also moves forward simultaneously by friction with the chuck piece 18. However, the chuck ring 20 can only move until the hook piece 20c abuts against the head of the retaining rib 12a, and cannot move forward further when it abuts against the head. Advance. At this time, the chuck piece 18 passes between the protruding corner portions 20d of the chuck ring 20. However, since the size of the gap between the adjacent chuck pieces 18 is reduced in the rear, the protruding corner portion 20d forces the chuck pieces 18 to spread away from the original axial center. As a result, the rod-like object 24 is released from the clamping of the chuck piece 18. When the knocking of the knocking portion 14a is released, the chuck piece 18 is retracted by the biasing force of the spring 16 and returns to the initial position. At this time, until the chuck piece 18 exerts a tightening force by the chuck ring 20, the rod-like object 24 is held at a position advanced by the frictional force by the rod-like object fitting rib 12b of the outer cylinder 12. By this series of operations, the rod-like object 24 is fed out by a length substantially corresponding to the length that the locking portion 20b of the chuck ring 20 slides with respect to the outer cylinder 10.

  Further, when the drawn rod-like object 24 is retracted, the knocking portion 14a is knocked so that the rod-like object 24 is released from the tightening of the chuck piece 18 and the rod-like object 24 is pushed backward. it can.

  Since the frictional force generated by the rod-like object fitting rib 12b changes depending on the height of the rod-like object fitting rib 12b, the height of the rod-like object fitting rib 12b is set to give an appropriate friction force to the rod-like object 24. Although it is necessary to set appropriately, since the rib 12b for rod-shaped object fitting is in contact with the ridgeline of the rod-shaped object 24 and is substantially line contact, adjustment of height is easy compared with the case of surface contact. Can be done.

  Moreover, since the winding shape of the spring 16 is a triangle combined with the triangle of the cross-sectional shape of the rod-like object 24, the space can be used effectively without wasting the space in the spring 16. . Furthermore, since the outer cylinder 12 and the inner cylinder 14 are also made into a triangle in combination with the triangle of the cross-sectional shape of the rod-like object 24, the space can be used effectively without wasting the space in the outer cylinder 12. Can do.

  Moreover, when the cross-sectional shape of the outer peripheral surface of the outer cylinder 12 is a triangle, the outer cylinder 12 can be made to correspond to the thumb, index finger, and middle finger that are often used when being held by hand, and the gripping ability of the user Can be improved.

  In the above description, the case where the rod-shaped object is an equilateral triangle has been described. The shape of at least one of the members may be a shape combined with the polygonal shape of the rod-like object. By increasing the number of ridgelines of the rod-like object 24, the number of corners increases, and it can be made suitable for more delicate work.

It is a whole longitudinal cross-sectional view showing embodiment of the stick-shaped object delivery container of this invention. FIG. 2 is an overall perspective view of the rod-shaped object feeding container of FIG. 1. It is a longitudinal cross-sectional view of an outer cylinder. It is the perspective view seen from the back of an inner cylinder. It is a longitudinal cross-sectional view of an inner cylinder. It is a perspective view of a spring (elastic body). (A) is the perspective view seen from the back of a chuck ring, (b) is the perspective view seen from the front of a chuck ring. It is a longitudinal cross-sectional view of a chuck ring. (A) is sectional drawing seen along the 9-9 line of FIG. 1, (b) is equivalent sectional drawing at the time of a knock. It is sectional drawing seen along the 10-10 line of FIG. It is a figure showing the relationship between the latching | locking part of a chuck ring and the rib for retaining of an outer cylinder.

Explanation of symbols

10 Bar-shaped object feeding container 12 Outer cylinder 12a Retaining rib (retaining part)
12b Rib for rod-like object fitting (fitting part)
14 Inner cylinder 16 Coil spring (elastic body)
18 Chuck piece 20 Chuck ring 20b Locking portion 24 Bar

Claims (6)

An inner cylinder is slidably inserted into the outer cylinder, and an elastic body is provided between the inner cylinder and the outer cylinder to urge the inner cylinder backward, and a rod-like object is held at the tip of the inner cylinder. In a rod-like object feeding container in which a chuck piece is provided, a chuck ring is fitted and inserted between the chuck piece and the outer cylinder, and the inner cylinder is slid back and forth to draw out and retract a rod-like object.
The cross-section of the rod-like object has a polygonal shape (including a triangle and a quadrangle, the same applies hereinafter), and the chuck pieces are provided corresponding to at least two sides of the polygon. A stick-shaped object feeding container characterized in that the side can be pressed.   The said chuck | zipper piece contact | abuts to a rod-shaped object in the center part of the said corresponding edge | side of the cross-sectional polygon of a rod-shaped object, The rod-shaped object delivery container of Claim 1 characterized by the above-mentioned.   The cross-sectional shape of the inner peripheral surface of the chuck ring is the same polygon as the polygon of the cross-section of the rod-like object, and the chuck ring is against the retaining portion formed on the inner peripheral surface of the outer cylinder. A locking portion that is slidable and prevents the outer cylinder from coming off forward is formed, and the locking portion is formed corresponding to only a part of the plurality of sides of the polygonal cross section. The stick-shaped object feeding container according to claim 1 or 2, wherein   The fitting part which contacts the part corresponding to the vertex of the cross-sectional polygon of a cross-section of a rod-shaped object is formed in the internal peripheral surface of an outer cylinder. Bar-shaped material feeding container.   The said elastic body is a coil spring, The winding shape of this coil spring is the same polygon as the polygon of the cross section of a rod-shaped object, The Claim 1 characterized by the above-mentioned. Bar-shaped material feeding container.   6. The bar-shaped object feeding container according to claim 5, wherein a cross-sectional shape of an inner peripheral surface and an outer peripheral surface of the outer cylinder is the same polygon as a polygon of a cross-section of the bar-shaped object.

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