KR20030071734A - barrel for Mechanical Pencil Lead - Google Patents

Abstract

PURPOSE: A sharp pencil lead case is provided to reduce a production cost and improve a production efficiency by manufacturing the case simply and to use a lead economically by discharging only necessary amount. CONSTITUTION: The upper end of a main body is opened. The main body includes a sharp pencil lead guide(115) vertically formed toward one inner surface thereof, a guide groove(116) along the outer circumferential side, and an engaging projection(118) at the upper end outer circumferential side of the guide groove(116). A clip(122) is protruded toward the lower end of one side and contacted with the guide groove(116). A sharp pencil lead discharging hole(124) is formed at the upper end. A cover(120) the lower end thereof is opened is detached to the opened upper end outer circumferential side of the main body. If the sharp pencil lead discharging hole(124) is vertically connected to the sharp pencil lead guide(115) according as the clip(122) is contacted with the guide groove(116) and the cover(120) is rotated, a sharp pencil lead is discharged.

Description

Sharp heartache {barrel for Mechanical Pencil Lead}

The present invention relates to a sharp core cylinder, and more particularly, to a sharp core cylinder that can be discharged to the outside only one or two sharp cores to replenish the sharp core to the mechanical pencil.

According to the configuration of the conventional sharp core cylinder, if the cover is installed slideably or detachably installed on the main body of the sharp core cylinder in which many sharp cores are stored, and to remove the sharp core stored in the core cylinder, the cover is pushed or opened to one side and the required amount As sharp as it was a way to get out.

In case of using such a conventional sharp core cylinder, there is an inconvenience of opening and closing the cover for discharging the sharp core, and in Korean Unexamined Utility Model Publication No. 1997-8474, a tangy part supporting the cover by being inserted into a core cylinder in which the sharp core is stored; Disclosed is a sharp core that can be discharged to the outside as the guide port is formed by opening and closing the outlet formed in the center of the top cover by moving the cover.

However, the sharp core cylinder disclosed in the Utility Model Publication has a problem in that its structure is complicated, resulting in high production cost and low productivity. In particular, when the discharge port formed on the top of the cover is opened according to the operation of the carbon part and the guide protrusion, a plurality of sharp shims are poured out at once, and some sharp shims may be broken or broken in this process.

The present invention has been proposed to solve the above problems, and an object of the present invention is to provide a sharp core that can reduce the production cost and increase the production efficiency by taking a simple configuration.

Another object of the present invention is to provide a sharp shim barrel that can economically use the sharp shim by discharging only the necessary amount to the outside, when the sharp shim is to be used.

1 is a front view briefly showing the sharp core pain of the present invention;

Figure 2 is an exploded perspective view briefly showing the coupling relationship between the main body and the cover of the sharp core cylinder of the present invention;

3a to 3b is a partial perspective view briefly showing a state in which the sharp core is closed or discharged as the cover of the present invention rotates the outer periphery of the main body;

4 is a perspective view briefly showing a sharp core according to another embodiment of the present invention.

<Description of Symbols for Major Parts of Drawings>

100: sharp core 110: main body

111: upper body 112: lower body

113: base 114: protrusion

115: sharp sim guide 116: guide groove

117: insertion hole 118: locking jaw

119: top opening 120: cover

122: clip 124: outlet

126: recessed groove 128: hollow lower portion

129: jamming

For the above purpose, the present invention is the upper end is opened, the sharp shim guide is formed in one inner surface, and the guide groove is provided along the outer periphery of the upper end, the locking step is formed in the upper end of the guide groove end A main body charged; As a sharp core cylinder protruding toward the bottom of one side and including a clip in contact with the guide groove of the main body, a sharp shim outlet at the upper end, and a cover of the lower end is opened to be detachable to the outer peripheral edge of the open top of the main body; When the clip is in contact with the guide groove and the cover rotates, the sharp shim can be discharged when the sharp shim outlet of the cover and the sharp shim guide of the main body communicate vertically.

The sharp shim discharge port of the cover is formed in a position substantially symmetrical to the position where the clip is provided, the upper center portion of the cover is characterized in that it takes a concave shape by a predetermined depth downward.

In addition, the main body and the cover rotating along the outer periphery of the main body may take any one of the shape of a cylinder, a square cylinder or a semi-cylinder.

In particular, the guide groove of the main body may be formed with one or more insertion holes into which the clip end of the cover can be inserted, the insertion hole is preferably formed in a plurality of symmetrical positions, in this case the sharp shim guide It is more preferably formed on the outer periphery of the guide groove passing through and the outer periphery of the guide groove symmetrical with the sharp shim guide.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is a front view of the sharp core cylinder of the present invention, Figure 2 is an exploded perspective view showing a coupling relationship between the upper cover and the main body constituting the sharp core cylinder of the present invention, it will be described at the same time.

As shown, the sharp core cylinder 100 according to the present invention is composed of a main body 110 in which a plurality of sharp cores are stored and a cover 120 detachable to the upper end thereof. The main body 110 may also be divided into a main body upper part 111 and a main body lower part 112, and the cover (the outer periphery of the main body 110 between the main body upper part 111 and the main body lower part 112) is formed. The guide groove 116 is provided so that the clip 122 protruding to one side lower portion of the 110 may slide in contact, and the lower end of the lower end 112 of the main body 112 may be lower than the lower end 112 for aesthetic consideration. A base 113 having a small diameter may be installed.

In particular, the guide groove 116 is inserted into the insertion hole 117, as will be described later by inserting the clip, the cover 120 can be fixed at a specific position around the main body 110.

The upper end of the guide groove 116 is opened 119, so that the sharp core penetrates the main body 110 together with the hollow lower end portion 128a of the cover 120 so as to be discharged to the outside when necessary. desirable. In addition, a protrusion 114 may be provided at an upper portion of the upper end 111 of the main body, and the outer diameter of the protruding portion 114 may be smaller than that of the lower end 112 of the main body, so that the protruding portion 114 may be formed. It is preferably configured to be inserted into the hollow lower end 128a and the inner side 128 of the lid 120. To this end, the height from the hollow lower end portion 128a of the cover 120 to the bottom surface 126a of the central concave groove 126 to be described later, that is, the length of the inner surface 128 with nothing interposed therein The heights of the protrusions 114 are to substantially match.

In particular, when the outer diameter of the protrusion 114 is smaller than the outer diameter of the upper body 111 and the lower body 112 of the main body, the lower end of the protrusion, that is, the upper end of the upper body 111 of the protrusion naturally ( 118 is formed. Corresponding to the locking step 118 formed in this way, by having a locking end 129 on the outer periphery of the lower end of the cover 120, the protrusion 120 through the lower end 128a in which the cover 120 is hollow In the process of detaching to the outer periphery of 114), the cover is inserted deeper than the proper position, thereby preventing the sharp core stored in the sharp core cylinder from being damaged.

A groove-shaped sharp shim guide 115 is vertically formed on one inner surface of the main body 110, and a plurality of sharp shims among the plurality of sharp shims stored on the inner surface of the main body 110 may be seated. That is, as specified for one purpose of the present invention, even if sharp shim is required, the width of the sharp shim guide 115 is approximately Sharp shim 1 to 3 so that a plurality of sharp shims may be discharged to the outside instead of at the same time. The degree to which the dog can be placed is desirable. The sharp shim guide 115 may be configured to vertically penetrate along one inner surface of the main body, and as illustrated in FIG. 2, the sharp shim guide 115 may be connected to the guide hole 115a near the protrusion 114. can do.

On the other hand, an outlet 124 is formed at one edge of the top of the cover 120 so that the cover 120 rotates along the outer periphery of the main body, so that the outlet 124 and the sharp shim guide 115 are rotated. When in communication, the sharp shim may exit to the outside through the outlet 124. The upper end of the cover 120 has a closed shape except for the outlet 124. As shown, the upper center of the cover 120 may include a recessed groove 126 recessed downward. In particular, the concave groove 126 is not a shape that completely covers the inner surface of the cover 120, and is formed at a constant height in a vertical direction from the upper end of the concave groove 126, so that only the central portion of the inner surface of the cover 120 It is configured to be covered. In this case, the bottom surface 126a of the concave groove 126 is configured to be formed at a height substantially equal to the height of the protrusion 114 formed at the upper end of the body 110 from the hollow lower end 128a. As already described.

In particular, when the accessory 130 is inserted into the upper end of the concave groove 126 of the present invention, it can be used not only as a sharp core but also for other purposes, for example, an eraser or the like on the upper end of the concave groove 126. You can insert In this case, it will be apparent to those skilled in the art that the concave groove 126 is not only formed in a circular shape, but may take the form of a polygon if necessary.

The lower end 128a of the cover 120 is hollow, so that the cover 120 passes through the opened upper end 119 of the main body and can be detached to the outer periphery of the protrusion 114 or the upper end 111 of the main body. have. To this end, the outer diameter of the protrusion 114 is smaller than the inner diameter of the hollow bottom 128 of the cover 120, as described above that the locking end 129 may be formed on the bottom of the cover.

In particular, the lower end of the cover 120 of the present invention is provided with a clip 122 having a shape protruding downward, as described above the cover 120 is the top of the body 111 or protrusions When detached to the outer periphery of the 114, the distal end 122a (see FIGS. 3A and 3B) protruding inwardly of the clip 120 is disposed at an outer periphery between the upper end 111 of the main body 111 and the lower end 112 of the main body. In contact with the guide groove 116 is formed. As a result, the cover 120 is also rotated as the clip 122, which is in contact with the guide groove 116, slides along the guide groove 116 to the outer periphery of the main body 110, and the cover 120 is rotated. Position of the outlet 120 formed at the top of the) is also relatively changed relative to the sharp shim guide 115 formed on one inner surface of the main body 110, 1 to 2 seated on the sharp shim guide 115 An amount of sharp shim may be discharged through the outlet 124.

3A and 3B are perspective views illustrating a state in which the sharp core is closed by the cover or discharged through the outlet 124 as the sharp core cover 120 of the present invention rotates along the outer periphery of the main body 110, respectively. .

As described above, when the cover 120 of the present invention is detached to the outer periphery of the protrusion 114 of the main body 110, the inner end 122a of the clip 122 protruding to the lower side of the cover 120 ) Is in contact with the guide groove 116 horizontally formed on the outer periphery between the body top 111 and the body bottom 112. As shown in FIG. 3A, the sharp seam is formed even when the discharge port 124 formed at the upper periphery of the cover 120 and the sharp seam guide 115 formed at one inner surface of the main body 110 do not communicate with each other. Even if it is seated on the sharp shim guide 115, the sharp shim cannot be discharged to the outside due to the lid 120 having the upper end closed except the outlet 124.

On the other hand, when the outlet 120 and the sharp shim guide 115 is placed in a position to communicate with the rotation of the cover 120, the sharp shim seated on the sharp shim guide 115 is the outlet 124 It can be discharged to the outside through. In particular, even when the outlet 124 and the sharp shim guide 115 are in communication with each other, since the number of sharp shims that can be placed on the sharp shim guide 115 can be adjusted by appropriately controlling the width of the sharp shim guide 115, You can prevent the pouring of multiple sharps at once.

As such, the relative position of the sharp shim guide 115 and the discharge port 124 may be arbitrarily adjusted along the guide groove 116 so that the sharp shim may be discharged. In the process of adjusting the relative position of the outlet 124 to a specific position, for example, the position shown in FIG. 3B, the burden is caused to rotate the lid 120, in particular the arbitrary rotation of the lid 120. Therefore, even if it is not desired, the sharp shim guide 115 and the outlet 124 are in communication, so that the sharp shim can not be discharged to the outside as well as waste due to the damage of the sharp shim discharged to the outside may be a problem. .

Accordingly, in the present invention, the insertion hole 117 is formed in the guide groove 116 formed along the outer circumference of the main body 110, so that the protruding inner end 122a of the clip 122 can be inserted. As such, when the inner end 122a of the clip is inserted into the insertion hole 117, the inner end 122a of the clip is fixed to the insertion hole 117 unless a constant force is applied from the outside. Accordingly, the cover 120 can no longer be arbitrarily rotated with respect to the body 110.

In particular, as shown in Figure 3 of the present invention, the inner end 122a of the clip as described above is formed in the outlet port 124 formed on the top of the cover and one inner surface of the body in a state fixed to the insertion hole 117 It is preferable to make the sharp shim guide 115 communicate.

In addition, a plurality of the insertion holes 117 may be formed, and two or more insertion holes 117 may be formed at symmetrical positions. For example, the present invention is not limited thereto, but in the case where two insertion holes 117 are formed, one of the insertion holes has a sharp shim guide 115 perpendicular to the inner surface of the main body 110. Is formed on the outer periphery of the guide groove terminated by the other, and the other insertion hole is formed on the outer periphery of the guide groove symmetrical with the sharp shim guide 115, when the end of the clip is inserted into any one of the insertion hole The sharp shim guide 115 and the outlet 124 may be in communication with each other.

On the other hand, when the two symmetrical insertion holes are formed in the guide groove 116 as described above, the clip 122 of the cover 120 is in the lower portion of the outlet 124 on the same vertical line as the outlet 124 The clip 122 may be formed to protrude at the lower end of the other side corresponding to one side where the outlet 124 is formed, in consideration of an aesthetic point or the like.

Figure 4 is a perspective view showing a sharp core according to another embodiment of the present invention, since the basic configuration is the same as described in Figures 1 to 3b, description of each configuration is omitted. The sharp core cylinder shown in FIG. 4 differs in that its appearance is not a cylindrical shape but a rectangular pillar. That is, as shown in FIG. 4, the inner side of the outlet port 124 and the main body 110 formed on one side of the upper end of the cover 122 by the rotation of the cover 120 which is also detached to the upper end 111 of the main body. The sharp shim guide (not shown in Figure 4) formed in the sharp shim may be discharged depending on whether the communication in the vertical direction, such that the relative position adjustment of the outlet 124 and the sharp shim guide is staked on the upper end of the main body 110 It may be made through the insertion hole (1170) formed in the guide groove 116.

In the above description of the preferred embodiment of the present invention, various modifications and changes are possible, and the fact that such modifications and changes fall within the scope of the present invention without departing from the spirit of the present invention. The appended claims will become clearer.

For example, in the above described the outer shape of the sharp core cylinder of the present invention in a cylindrical or square column shape, it will be possible to produce a semi-cylindrical shape.

Compared with the conventional sharp core, the sharp core according to the present invention has a simple configuration such as no elastic means and the like, and thus, the production cost and the increase in production efficiency are expected.

In addition, the cover rotates along the guide groove horizontally installed along the upper periphery of the main body and the sharp core of the required amount can be discharged to the outside according to the relative position adjustment of the main body, and in particular, the width of the sharp core guide formed on the inner side of the main body When properly adjusted, since only a few sharp shims can be discharged to the outside even when the cover outlet is open, the sharp shim can be prevented from being damaged due to a large number of sharp shims. It is possible to use.

Claims (6)

A main body having an upper end opening and having a sharp shim guide vertically formed on one inner side thereof, having a guide groove along an upper outer periphery, and a locking jaw formed at an upper outer periphery of the guide groove; As a sharp core cylinder protruding toward the bottom of one side and including a clip in contact with the guide groove of the main body, a sharp shim outlet at the upper end, and a cover of the lower end is opened to be detachable to the outer peripheral edge of the open top of the main body; , Sharp core cylinder that can be discharged when the clip is in contact with the guide groove and the cover rotates, the sharp shim outlet and the sharp shim guide of the main body is in vertical communication. The method of claim 1, The sharp core discharge port of the cover is formed in the sharp core cylinder symmetrical with the clip. The method of claim 1, Sharp top tube, characterized in that the upper center portion of the cover has a concave shape toward the lower end by a predetermined depth. The method of claim 1, The main body and the cover is a sharp core cylinder, characterized in that the shape of the cylinder, square pillar or semi-cylinder. The method of claim 1, Sharp core tube, characterized in that the guide groove of the main body is formed with one or more insertion holes through which the clip end of the cover can be inserted. The method of claim 5, The insertion hole is a sharp core, characterized in that formed on the outer periphery of the guide groove through which the sharp shim guide passes and the outer periphery of the guide groove symmetrical with the sharp shim guide.