JP2005081828A - Spare lead case - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate opening of a lid so that extra leads do not come out to the outside and fall, and to achieve stability of the lid in a closed state and durability that does not cause breakage. <P>SOLUTION: In a spare lead case 1 composed of a lid 4 attached to an open end 3 of a main body 2 for containing spare leads such that it can be open and closed, on at least one open edge 7 or the side surface of the lid 4 and the main body 2, flexible trenches 8 are provided in the vertical direction in which the lid 4 is moved when the lid 4 is to be attached to the main body 2, depressed portions 9 (or protruding portions) for latching are provided near the flexible trenches 8, and protruding portions 10 (or depressed portions) for latching the depressed portions 9 are provided on the other side. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a replacement core case for storing a replacement core of a mechanical pencil.

Most of the conventional replacement core cases are such that a convex portion formed on the inner surface of the lid is engaged with a concave portion of the main body, and the lid is detachably attached to the opening end of the main body.
However, the above-described replacement core case has no elasticity in the lid forming the convex portion, and the projection is worn out or the engagement between the convex portion and the concave portion becomes difficult to disengage due to repeated attachment and detachment of the lid. At the moment of opening, there is a case where the main body swings and the replacement core housed inside protrudes outside and falls.

In order to cope with this problem, in Patent Document 1, an engagement piece that protrudes from the lower end of the lid is formed on the lid, a recessed portion that matches the engagement piece is formed on the main body, and the engagement piece of the lid A protrusion is formed on one of the recesses on the main body and a recess on the other, and the engagement piece of the lid is matched with the recess on the main body, and the protrusion and the recess are engaged with each other. An extra lead case has been proposed.
Utility Model Registration No. 2606533 (see paragraph [0004], FIGS. 1 to 6).

  The replacement core case described in Patent Document 1 can effectively prevent the replacement core accommodated in the main body from popping out when the lid is opened, but it protrudes from the lower end of the lid. There is a risk that the engaging piece may be damaged, and the structure is somewhat complicated.

  In view of the present situation, the present invention can easily open the lid, and when the lid is opened, there is no possibility that the replacement core housed inside the main body will jump out and fall due to the swinging of the main body. In addition, when the lid is closed, there is no large protruding part that is stably fixed to the main body and may be damaged, and the durability is enhanced, and the structure is relatively simple, An object of the present invention is to provide a replacement core case that eliminates problems even in the cost of molds.

According to the present invention, the above problem is solved as follows.
(1) In a replacement core case in which a lid is detachably attached to the opening end of the main body that houses the replacement core, the lid is attached to the main body at the opening edge of at least one of the lid and the main body or the side surface thereof. A flexible groove is provided in the up and down direction to which the lid is moved when moving, and a convex or concave portion for locking is provided in the vicinity of the flexible groove, and the convex or concave portion is provided on the other main body or lid. A replacement core case provided with a concave portion or a convex portion that can be locked by the portion or the concave portion.

  (2) In the above item (1), the vertical position of the projection or recess for locking in the lid or body provided with the flexible groove is set within the vertical range where the flexible groove exists. To do.

  (3) In the above item (1) or (2), the locking projection or recess is provided in the vicinity of the left and right sides of the flexible groove.

  (4) In the above item (1) or (2), the flexible groove is provided in the vicinity of the right and left sides of the locking convex portion or concave portion.

  (5) In any one of the above items (1) to (4), the vicinity range is within 5 mm from the flexible groove, the convex portion, or the concave portion.

According to the present invention, the following effects can be obtained.
(1) According to the invention described in the above item (1), because the convex or concave portion for locking bends outward due to the presence of the flexible groove, the lid can be easily opened and closed, and the lid is opened. Due to the momentary swinging of the main body, there is no possibility that the replacement core jumps out and falls.
Further, when the lid is closed, there is a flexible groove, so that the degree of fitting between the lid and the main body can be increased, the engagement between the two can be ensured, and the lid is damaged. There are no prominently protruding parts, which are excellent in durability.
Furthermore, the structure is relatively simple, which is advantageous in terms of the cost of the mold.

  (2) According to the invention described in the above item (2), when the lid is opened and closed, the locking convex portion or the concave portion can be satisfactorily bent and suitably engaged.

  (3) According to the invention described in the item (3), the same effect as the invention described in the item (2) can be obtained.

  (4) According to the invention described in the item (4), the same effect as the invention described in the item (2) can be obtained.

  (5) According to the invention described in item (5), the same effect as that of the invention described in item (2) can be achieved.

  Hereinafter, the present invention will be described in detail with reference to the drawings.

  1 is a front view showing a first embodiment of the extra lead case of the present invention, FIG. 2 is a left side view, FIG. 3 is a sectional view taken along line III-III in FIG. 1, and FIG. It is a perspective view.

  The replacement core case (1) of the present invention includes a main body (2) that accommodates a replacement core therein, and a lid that is detachably attached to the open end (3) (see FIG. 4) of the main body (2) ( 4). The main body (2) is a bottomed cylindrical body having a flat octagonal shape in plan view, and the upper opening end (3) is reduced in size through a stepped portion (5).

  The lid (4) has an octagonal cross-sectional shape similar to that of the opening end (3) of the main body (2) and opens downward.

  The opening edge (7) on the left and right side surfaces (6) and (6) of the lid (4) has a lower end in the vertical direction that moves the lid (4) when the lid (4) is attached to the main body (2). Flexible grooves (8) and (8) that are notched in an inverted U-shape that are open are provided, and in the vicinity of the left and right of each flexible groove (8) on the inner surface of the lid (4), a locking groove is provided. Recesses (9) and (9) are provided.

  On the other hand, the open end (3) of the main body (2) is provided with convex portions (10) and (10) for engaging with the concave portions (9) and (9) of the lid (4).

  When the lid (4) is attached to and detached from the main body (2), since the flexible groove (8) exists, the peripheral edge (11) provided with the concave portion (9) of the lid (4) is outward. It can be bent and easily attached and detached.

In order to perform the bending satisfactorily, in general, it is preferable to provide the locking recess (9) at a position within 5 mm in the vicinity of the left and right of the flexible groove (8). Moreover, it is desirable to set the vertical position of the locking recess (9) within the vertical range where the flexible groove (8) is present.
In addition, although the Example which provided the recessed part (9) in the lid | cover (4) and the convex part (10) in the main body (2) was shown, conversely, a convex part was provided in the lid (4), and a recessed part was provided in the main body (2). May be. The same applies to the following embodiments.

  FIG. 5 shows a second embodiment of the extra lead case (12) of the present invention and is a perspective view of the essential part corresponding to FIG.

  Recesses (15) and (15) for locking are provided on the left and right side surfaces (14) and (14) of the lid (13), and inverted U-shaped with lower ends open near the left and right sides of each recess (15) and (15) Flexible grooves (16) and (16) that are notched in a shape are provided.

  On the other hand, the left and right side surfaces (19), (19) at the open end (18) of the main body (17) are provided with convex portions (20), (20) that can be engaged with the concave portions (15), (15). .

  When attaching and detaching the lid (13) to and from the main body (17), since the flexible groove (16) (16) exists, the peripheral portion (21) provided with the recess (15) in the lid (13) Bends outward and can be easily attached and detached.

  In order to allow the bending to be performed satisfactorily, it is generally preferable to provide the flexible groove (16) at a position within 5 mm as the vicinity of the left and right sides of the recess (15).

  FIG. 6 is a perspective view of an essential part showing a third embodiment of the extra lead case (22) of the present invention.

  At the center of the inner surface of the front and rear side surfaces (24) and (24) of the lid (23), locking convex portions (25) and (25) are provided, in the vicinity of the left and right sides of each of the convex portions (25) and (25), Vertical hole-like flexible grooves (26), (26) are provided.

  On the other hand, in the center of the outer surface of the front and rear side surfaces (29) and (29) at the open end (28) of the main body (27), a recess (30) and (30) that can be locked by the protrusion (25) and (25) are provided. ing.

  When attaching / detaching the lid (23) to / from the main body (27), since the hole-like flexible groove (26) exists, the convex portion (25) (or concave portion) of the lid (23) bends outward and is easy. It can be attached and detached.

  FIG. 7 is a perspective view of an essential part showing a fourth embodiment of the extra lead case (31) of the present invention.

  In the first to third embodiments, the flexible groove is provided in the lid. However, in the fourth embodiment, the flexible groove (32) notched in a U-shape is provided in the main body (33). Are provided on the opening edge (35) of the left and right side surfaces (34) and (34), and locking convex portions (36) and (36) are provided in the vicinity of the left and right sides of each flexible groove (32). .

  On the other hand, the left and right side surfaces (38), (38) of the lid (37) are provided with recesses (39), (39) for locking the protrusions (36), (36).

  FIG. 8 is a perspective view of an essential part showing a fifth embodiment of the replacement core case (40) of the present invention.

  In the first to fourth embodiments, the lid is moved up and down with respect to the main body to be opened and closed, but in the fifth embodiment, the lower right end of the lid (41) is The main body (42) is pivotally supported, and the lid (41) is pivoted around the pivotal support (43) to open and close. The opening edge (45) of the left side surface (44) of the lid (41) is provided with a flexible groove (46) cut out in an inverted U shape, and a locking projection ( 47) (47) is provided.

  On the other hand, the left end of the front and rear pieces (48a) (48a) of the opening end (48) of the main body (42) is provided with a recess (49) (49) for locking the protrusion (47) (47). It has been.

It is a front view which shows 1st Example of the spare core case of this invention. Similarly, it is a left side view. It is the III-III sectional view taken on the line in FIG. It is an expansion principal part perspective view of the replacement core case shown in FIG. It is a principal part perspective view which shows 2nd Example of this invention. It is a principal part perspective view which shows 3rd Example of this invention. It is a principal part perspective view which shows 4th Example of this invention. It is a principal part perspective view which shows 5th Example of this invention.

Explanation of symbols

(1) Extra lead case
(2) Body
(3) Open end
(4) Lid
(5) Step
(6) Side
(7) Open edge
(8) Flexible groove
(9) Recess
(10) Convex
(11) Perimeter
(12) Extra lead case
(13) Lid
(14) Side
(15) Recess
(16) Flexible groove
(17) Body
(18) Open end
(19) Side
(20) Convex
(21) Perimeter
(22) Extra lead case
(23) Lid
(24) Side
(25) Convex
(26) Hole-shaped flexible groove
(27) Body
(28) Open end
(29) Side
(30) Recess
(31) Extra lead case
(32) Flexible groove
(33) Body
(34) Side
(35) Open edge
(36) Convex
(37) Lid
(38) Side
(39) Recess
(40) Extra lead case
(41) Lid
(42) Body
(43) Shaft support
(44) Side
(45) Open edge
(46) Flexible groove
(47) Convex
(48) Open end
(48a) Front and rear pieces
(49) Recess

Claims (5)

  When a cover is attached to the opening end of the main body that accommodates the replacement core so that the cover can be opened and closed, when the cover is mounted on the opening edge of the cover or at least one of the main body or the side surface thereof. Provided with a flexible groove facing the up and down direction in which the lid is moved, and provided with a convex or concave portion for locking in the vicinity of the flexible groove, and the convex or concave portion on the other body or lid An extra lead case provided with a concave or convex part that can be locked.   The vertical position of the convex or concave portion for locking in the lid or main body provided with the flexible groove is set within the vertical range where the flexible groove exists. Extra lead case.   The replacement core case according to claim 1 or 2, wherein the convex or concave portions for locking are provided in the vicinity of both left and right sides of the flexible groove.   The replacement core case according to claim 1, wherein the flexible groove is provided in the vicinity of both left and right sides of the locking convex portion or concave portion.   5. The replacement core case according to claim 1, wherein the vicinity range is within 5 mm from the flexible groove, the convex portion, or the concave portion.

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