JP4518866B2 - Extra lead case - Google Patents

Description

  The present invention relates to an extra lead case that houses a lead for a mechanical pencil.

Conventionally, replacement lead cases containing lead for mechanical pencils have a lid attached to a thin rectangular body or cylindrical body made of synthetic resin, and a part of the lid is operated or the lid is rotated. Open and close the lead outlet. (Refer patent document 1) Moreover, the core exit was opened and closed by attaching / detaching the cover body to the main body. (See Patent Document 2)
JP 2003-2111893 A JP 2001-162983 A (paragraph 0020)

  The above-described replacement core cases that are generally commercially available as described above have to be discarded when the stored core is exhausted, and the amount of waste generated increases.

  The present invention provides a replacement core case for storing a lead for a mechanical pencil, a cylindrical main body, a fixing member that is detachably attached to a rear portion of the main body, and a fixing member for opening and closing a core outlet formed on the fixing member. A lid that is attached to the member, a plug that is detachably attached to the front of the main body, and a base that is formed in a substantially conical shape that is detachably screwed to the front of the main body. The first gist is that an inner hole that can be stored and penetrated in the longitudinal direction is formed, and an opening hole through which the core guide can protrude is formed at the tip of the base.

  In addition, a locking hole is formed in the rear part of the main body, an elastic part is formed by a kerf in the fixing member, a locking protrusion is formed in the elastic part, and the locking protrusion is engaged with the locking hole. The second gist is that the fixing member is detachably attached to the main body.

  Furthermore, in the spare lead case that houses the lead for the mechanical pencil, the cylindrical main body, the lid that is detachably attached to the rear part of the main body to close the core outlet of the main body, and the front part of the main body are detachable A plug body to be attached, and a base formed in a substantially conical shape that is detachably screwed to the front portion of the main body, forming an inner hole capable of storing a core in the main body and penetrating in the longitudinal direction; and The third gist is that an opening hole through which the core guide can protrude is formed at the tip of the base.

  Furthermore, a fourth aspect is that a thin-diameter portion is formed in the front portion of the main body, a cylindrical soft member is covered on the thin-diameter portion, and the soft member is sandwiched between the base and the step portion of the shaft tube. To do.

  In addition, a locking inner step is formed at the front portion of the main body, the front portion of the plug body is divided into a plurality of portions, a locking protrusion is formed at the front portion, and the locking protrusion of the plug body is engaged with the engagement of the main body. The fifth gist is that the inner stage is detachably attached.

  The replacement core case of the present invention can be used as a knock-type mechanical pencil by removing parts such as a fixing member, a lid and a plug from the main body and attaching a mechanism part, a core guide and a knob attached to the replacement core case. . Therefore, there is an advantage that the main body and the base of the extra lead case need not be discarded.

  By removing parts such as fixing members, lids and plugs from the main body of the extra lead case, we realized a spare case that can be used as the main body and base of a knock-type mechanical pencil.

  1, FIG. 2, FIG. 4, FIG. 4, FIG. 5 and FIG. 6 explain a spare core case according to the first embodiment of the present invention. In FIG. 1, the left side is the lower side and the right side is the upper side. An inner hole 1A in which the core 2 can be accommodated in the main body 1 and penetrates in the longitudinal direction is formed. A locking inner step 1B is formed in the lower part of the cylindrical main body 1, and a locking hole 1C is formed in the rear part. . Further, a narrow diameter portion 1D is formed in the front portion of the main body 1, and a raised portion 1E is formed in the rear portion, and a through hole 1F is formed in the raised portion 1E. A protrusion 1G is formed at a position facing the locking hole 1C of the main body 1 by appropriately extending in the longitudinal direction from the rear end. A keyway 1H is formed on the inner surface of the main body 1 that is shifted 90 degrees to the right from the through hole 1F. The fixing member 3 forms a cut groove 3A in parallel in the longitudinal direction to form an elastic portion 3B, and a locking protrusion 3C having a front end inclined is formed on the elastic portion 3B. The fixing member 3 has an opening at the lower end and forms a core outlet 3E at the upper end surface 3D. The fixing member 3 has a concave portion 3F having a substantially quarter area of the upper end surface 3D and slightly recessed at an angle of 90 degrees from the center. Form. A key 3G is formed on the fixed member 3 at a position shifted 90 degrees to the right from the locking projection 3C.

  The fixing member 3 is inserted from the rear end of the main body 1, and the key 3G of the fixing member 3 is engaged with the key groove 1H of the main body 1, and the locking protrusion 3C of the fixing member 3 is inserted into the locking hole 1C of the main body 1. Fit. Therefore, although the fixing member 3 is fixed to the main body 1 without rotating, the fixing member 3 can be removed by removing the locking projection 3C from the locking hole 1C. The rear part of the fixing member 3 protrudes from the rear end of the main body 1, and the engaging protrusion 3 </ b> H is formed on the rear part, and the concave line 3 </ b> I is formed on the circumference behind the engaging protrusion 3 </ b> H.

  The lid 4 is opened at the lower end and closed at the upper end to form the top surface 4A. An opening hole 4B is formed in the top surface 4A, and an engaging protrusion 4C is formed inside the top surface 4A at a position facing the opening hole 4B with the central axis as a base point. A fixed protrusion 4D extending on the circumference is formed on the inner surface of the lid 4. Furthermore, a closing engagement recess 4E is formed at a position facing the opening 4B and the center axis on the inner side of the lower end of the lid 4, and a position shifted 90 degrees to the left from the closing engagement recess 4E. An opening engaging recess 4F is formed on the surface. Further, on the outer peripheral surface of the lid body 4, an opening protrusion 4G extending in the longitudinal direction from the lower end is formed on the opening hole 4B side, and the lower end is shifted to the right by 90 degrees from the opening protrusion 4G. The closing protrusion 4H that extends more in the longitudinal direction is formed.

  The lid body 4 is put on the rear portion of the fixing member 3, and the fixing protrusion 4 </ b> D of the lid body 4 is engaged with the recess 3 </ b> I of the fixing member 3. In addition, the closing engagement recess 4 </ b> E of the lid 4 is engaged with the engagement protrusion 3 </ b> H of the fixing member 3. Then, the protrusion 1G of the main body 1 and the closing protrusion 4H of the lid 4 are matched, and the core outlet 3E of the fixing member 3 is closed by the top surface 4A of the lid 4. Moreover, the engagement protrusion 4C formed on the inner side of the top surface 4A of the lid 4 is positioned in the recess 3F formed on the upper end surface 3D of the fixing member 3, and the engagement protrusion 4C is rotated in the counterclockwise direction of the recess 3F. The leftward rotation is restricted by contacting the side edge 3J.

  A soft member 5 made of rubber is put on the small-diameter portion 1D of the main body 1. This soft member 5 is cylindrical and has an outer diameter at the intermediate portion that is smaller than both ends. Further, a mechanical pencil core 2 is accommodated in the inner hole 1A of the main body 1, and a plug body 6 for closing the lower through hole 1I of the main body 1 is detachably attached. The plug body 6 is formed by extending two elastic pieces 6B downward from the plug portion 6A at the upper end, and a locking projection 6C is formed on each elastic piece 6B. The locking projection 6C is formed with an inclined surface as it goes upward, and further, a stopper portion 6D is formed below. The plug body 6 is inserted from below the main body 1, and the locking protrusion 6 </ b> C is locked to the locking inner stage 1 </ b> B of the main body 1. Therefore, the lower through-hole 1 </ b> I of the main body 1 is closed and the elastic piece 6 </ b> B is appropriately protruded from the lower end of the main body 1 and attached. Further, the stopper portion 6 </ b> D of the plug body 6 is brought into contact with the lower end of the main body 1. Further, a substantially conical base 7 is detachably screwed to the male screw portion 1J of the main body 1 protruding downward from the soft member 5. Further, the inner stage 7 </ b> A of the base 7 and the lower end of the main body 1 are appropriately separated from each other, and an opening hole 7 </ b> B is formed at the tip of the base 7. Moreover, the soft member 5 is sandwiched between the rear end of the base 7 and the step portion 1K of the main body 1.

  In the spare lead case of the first embodiment, in order to open the lead outlet 3E, when the soft member 5 is held with the left hand and the lid 4 is rotated to the right with the right hand, the closing engagement recess 4E of the lid 4 is The engagement recess 4F of the lid 4 is disengaged from the engagement protrusion 3H of the fixing member 3 and is engaged with the engagement protrusion 3H of the fixing member 3. Further, the engagement protrusion 4C of the lid 4 abuts against the edge 3K on the right rotation direction side of the recess 3F of the fixing member 3, and the clockwise rotation of the lid 4 is stopped. Then, the protrusion 1G of the main body 1 and the opening protrusion 4G of the lid 4 are matched, the core outlet 3E of the fixing member 3 and the opening hole 4B of the lid 4 are combined, and the core outlet 3E is opened, FIG. The state shown in FIGS. 8, 9 and 10 is obtained. Even if the user does not look into the core outlet 3E and confirm, the core outlet 3E is opened if the projection 1G of the main body 1 and the projection 4G for opening of the lid 4 are matched. Can be judged. In this state, if the lead outlet 3E of the spare lead case is directed downward, several lead 2 are dropped and can be taken out from the lead outlet 3E.

  Next, after turning the lead outlet 3E of the spare lead case upward, holding the soft member 5 with the left hand and rotating the lid 4 to the left with the right hand, the engagement recess 4F for opening of the lid 4 is fixed. The engagement recess 4E of the lid 4 is disengaged from the engagement protrusion 3H of the member 3 and is engaged with the engagement protrusion 3H of the fixing member 3. Further, the engagement protrusion 4C of the lid 4 abuts against the edge 3J on the left rotation direction side of the recess 3F of the fixing member 3, and the left rotation of the lid 4 is stopped. Then, the protrusion 1G of the main body 1 and the closing protrusion 4H of the lid body 4 are matched, and the core outlet 3E of the fixing member 3 is closed by the top surface 4A of the lid body 4, FIG. 1, FIG. 2, FIG. The state shown in FIGS. 4, 5, and 6 is restored. Even if the user does not look into the core outlet 3E and confirm, the core outlet 3E is closed if the protrusion 1G of the main body 1 and the closing protrusion 4H of the lid 4 are matched. Can be judged.

  In the replacement core case of the first embodiment, when the housed core 2 is used up, after the base 7 is removed from the main body 1, the elastic piece 6B of the plug body 6 is bent inward, The locking projection 6 </ b> C is removed from the locking inner stage 1 </ b> B of the main body 1, and the plug body 6 is taken out from the main body 1. Further, the locking protrusion 3C of the fixing member 3 fitted in the locking hole 1C of the main body 1 is pressed from the outside to be removed, and the fixing member 3 is taken out from the main body 1 backward. The lid 4 is also removed from the main body 1 while being attached to the solid member 3.

  Next, a mechanism portion including the chuck 8, the tightening ring 9, the washer 10, the core tank 11 and the spring 12 is inserted from the front of the main body 1. Further, the core guide 13 and the synthetic resin core holder 14 fixed to the core guide 13 are inserted into the base 7, the core guide 13 protrudes from the opening hole 7 B of the base 7, and the core holder 14 is attached to the base 7. It is fitted to the inner surface with moderate frictional resistance. The lead holder 14 contacts the lead 2 with an appropriate frictional resistance. Although not shown, the lead holder 14 may be made of rubber. The base 7 is screwed into the male thread 1 </ b> J of the main body 1, and the washer 10 is held between the inner stage 7 </ b> A of the base 7 and the lower end of the main body 1. Further, the knob 15 is detachably fitted to the rear portion of the lead tank 11. The knob 15 is appropriately projected from the rear end of the main body 1. Then, the knock type mechanical pencil shown in FIG. 11 is obtained, and the main body 1, the soft member 5, and the base 7 of the extra lead case can be recycled.

  In this knock type mechanical pencil, when the knob 15 protruding from the rear end of the main body 1 is pressed, the chuck 8 advances and the lead 2 is drawn out. When inserting the lead 2 into the lead tank 11, the knob 15 is removed and the lead 2 is inserted from the rear end of the lead tank 11.

  Further, the through hole 1F of the raised portion 1E formed in the main body 1 is for use as a key holder or a mobile phone strap by attaching a chain or string.

  Furthermore, if the soft member 5 that covers the small-diameter portion 1D of the main body 1 is configured to have transparency, a decoration such as a seal can be attached between the small-diameter portion 1D of the main body 1 and the soft member 5. It is.

  A spare core case according to the second embodiment of the present invention will be described with reference to FIG. In addition, the same member as FIG. 1 attaches | subjects the same code | symbol, and omits the description. The upper end of the fixing member 103 is opened to form a core outlet 103E. In order to close the core outlet 103E of the fixing member 103, the lid body 104 is detachably fitted to the upper portion of the fixing member 103. At this time, the inward projection 104I of the lid body 104 is engaged with the concave groove 103L formed in the upper part of the fixing member 103. The lid 104 is formed by closing the top surface 104A, and a plurality of anti-slip protrusions 104J are formed on the outer surface. The method of using the main body 1, the soft member 5, and the base 7 for the knock type mechanical pencil is the same as in the first embodiment.

  A spare core case according to the third embodiment of the present invention will be described with reference to FIG. In addition, the same member as FIG. 1 attaches | subjects the same code | symbol, and omits the description. An inner hole 101A in which the core 2 can be accommodated in the main body 101 and penetrates in the longitudinal direction is formed, and a rear portion of the cylindrical main body 101 is opened to form a core outlet 101L. Further, the front portion 204K of the lid 204 is formed with notches 204L that are open on both sides and a protrusion 204M that faces both sides. The front part 204K of the lid 204 is inserted into the rear part of the main body 101, the protrusion 204M of the lid 204 comes into frictional contact with the inner surface of the rear part of the main body 101, and the lid 204 is detachably attached to the main body 101. Accordingly, the core outlet 101L of the main body 101 is closed by the front portion 204K of the lid 204. The method of removing the plug body 6 and the lid body 204 from the main body 101 and using the main body 101, the soft member 5 and the base 7 for the knock type mechanical pencil is the same as in the first embodiment.

  It can be applied to a refill case that can be recycled as a knock-type mechanical pencil part without discarding the main body and the base.

It is a longitudinal cross-sectional view which shows the spare core case of Example 1 of this invention. Example 1 It is a principal part front view which shows the spare core case of Example 1 of this invention. Example 1 It is a longitudinal cross-sectional view which shows the AA line of FIG. Example 1 It is sectional drawing which shows the BB line of FIG. Example 1 It is sectional drawing which shows the CC line | wire of FIG. Example 1 It is principal part sectional drawing which shows the DD line | wire of FIG. Example 1 It is a principal part front view which shows the state which opened the core exit in the spare core case of Example 1 of this invention. Example 1 It is principal part sectional drawing which shows the EE line | wire of FIG. Example 1 It is sectional drawing which shows the FF line | wire of FIG. Example 1 It is sectional drawing which shows the GG line of FIG. Example 1 It is a longitudinal cross-sectional view which shows the state which utilized the extra lead case of Example 1 of this invention for the knock type mechanical pencil. Example 1 It is a longitudinal cross-sectional view which shows the spare core case of Example 2 of this invention. (Example 2) It is a longitudinal cross-sectional view which shows the spare core case of Example 3 of this invention. Example 3

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 1A Inner hole of main body 1B Locking inner step of main body 1 1C Locking hole of main body 1 1D Small diameter portion of main body 1 1K Step portion of main body 1 2 Core 3 Fixing member 3A Groove 3B of fixing member 3 Fixing Elastic part of member 3C Locking protrusion 3E of fixing member 3 Core exit of fixing member 3 Lid 5 Soft member 6 Plug 6C Locking protrusion 7 of plug 6 7A 7A Inner stage 7B 7B Hole 13 Core guide 101 Main body 101A Inner hole 101 of main body 101 Core outlet 103 of main body 101 Fixing member 103E Core outlet of fixing member 103 104 Lid 204 Lid

Claims (5)

  In a replaceable lead case containing a mechanical pencil lead, a cylindrical main body, a fixing member that is detachably attached to the rear part of the main body, and a fixing member that opens and closes a lead outlet formed in the fixing member. A lid body, a plug body detachably attached to the front part of the main body, and a base formed in a substantially conical shape that is detachably screwed to the front part of the main body, and a core can be stored in the main body, and An extra lead case characterized in that an inner hole penetrating in the longitudinal direction is formed and an opening hole is formed at the tip of the die.   A locking hole is formed in the rear part of the main body, an elastic part is formed by a kerf in the fixing member, a locking protrusion is formed in the elastic part, and the locking protrusion is engaged with the locking hole in the main body. The replacement core case according to claim 1, wherein the fixing member is detachably attached.   In a refill case that houses the lead for a mechanical pencil, a cylindrical main body, a lid that is detachably attached to the rear of the main body to close the core outlet of the main body, and a detachable attachment to the front of the main body The cap body and a base formed in a substantially conical shape that is detachably screwed to the front part of the main body, the core can be stored in the main body and an inner hole penetrating in the longitudinal direction is formed, and the base A refill case characterized in that an opening hole is formed at the tip of the wire.   4. A narrow diameter portion is formed in the front portion of the main body, a cylindrical soft member is covered on the thin diameter portion, and the soft member is sandwiched between a base and a step portion of the main body. The extra lead case of any one of Claims.   A locking inner step is formed at the front portion of the main body, the front portion of the plug body is divided into a plurality of portions, a locking protrusion is formed at the front portion, and the locking protrusion of the plug body is connected to the locking inner step of the main body. The replacement core case according to any one of claims 1 to 4, wherein the replacement core case is detachably attached to the casing.

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