TWI636899B - Automatic pencil lead container - Google Patents

Abstract

In the conventional art, the cap can slide, and the cap cannot be separated from the body accommodating the body of the automatic pencil lead. In the case where the open position of the removable pencil core is formed, the cap will cover the line of sight and interfere with the finger. Wait, it hinders the removal of the automatic pencil lead. In addition, the body and the cap can be separated from the product, fearing that the cap will be lost.

The present invention is a pencil-cartridge container formed by a body shaft, a cap, a front axle, and a crown for accommodating a pencil-core, and the opening portion is directed toward the lower side, and is intended to be: The spherical protrusion formed on the inner surface of the cap and the "sliding groove formed in the front shaft" allow the cap to move up and down with respect to the axial direction of the main body shaft, and the lid portion formed on the crown is used. Covering the protrusion opening formed in the protrusion of the front shaft; the protrusion is detachable from the "opening formed in the crown", and the spherical protrusion cannot be formed over the "upper locking surface provided on the front shaft", The lower locking surface of the body shaft.

Description

Automatic pencil lead container

The invention relates to a automatic pencil lead container.

Conventionally, there has been a type of automatic pencil lead container which is composed of a "body for accommodating the automatic pencil lead" and a cover or cap for preventing the automatic pencil lead from falling out.

The automatic pencil core container of Patent Document 1 is provided with a mechanical pencil core take-out opening for taking out the automatic pencil lead on the upper end surface, and a container body and a plate-shaped cover body and a bottom plate which are slidable relative to the container body. The container body has a box-shaped tubular shape in which "the upper and lower ends are formed with an opening", and a U-shaped notch is formed on the side surface of the upper end portion. The lower end opening of the container body is closed by the bottom plate. The plate-shaped lid body can be inserted into the "U-shaped notch provided on the side surface of the upper end portion", and the groove is formed on the side surface of the plate-shaped lid body, and "the lid-shaped lid body is formed on the upper end side of the container body". The groove on the side is engaged and forms a track that allows the cover to slide freely.

Further, as disclosed in Patent Document 2, "the container body having the opening portion formed at one end and having the accommodating portion for accommodating the pencil core" and the "opening portion detachably attached to the container body" are provided. A pencil-core container for the cap of the side wall.

[Patent Literature]

[Patent Document 1] Japanese Patent No. 3653313

[Patent Document 2] Japanese Patent No. 6032999

In the above-mentioned conventional technique, the product of Patent Document 1 in which the plate-shaped cover body can be slid, in the case where the plate-shaped cover body is slid in the lateral direction in order to take out the automatic pencil lead, and is in the open position, the plate-like shape The cover body is ejected toward the outside of the container body, causing the line of sight to be covered and interfering with the fingers, which hinders the operation of taking out the automatic pencil lead.

Further, in the product of Patent Document 2 in which the main body and the cap are detachably formed, when the cap is removed and the automatic pencil lead is taken out from the main body, there is a fear that the cap is lost.

The present invention is a automatic pencil lead container formed by a body shaft, a cap, a front shaft and a crown for accommodating a pencil core, and the opening is directed to the lower side to take out the pencil lead, which is intended to be: "Spherical protrusion formed on the inner surface of the cap" and "sliding groove formed in the front shaft" allow the cap to move up and down with respect to the axial direction of the main shaft, and the cover is formed by the cover formed in the crown Projection opening of the protrusion of the front axle; The projections are detached from the "opening formed in the crown", and the spherical projections are prevented from passing over the "upper locking surface provided on the front shaft" and the "lower locking surface provided on the main shaft".

According to the present invention, the cap is formed to be movable up and down with respect to the axial direction of the body shaft, thereby forming an automatic pencil-core container for entering and exiting the automatic pencil lead, and accommodating the automatic pencil lead without overflowing, by claim 1 According to the invention described above, when the state in which the automatic pencil lead can be taken out, the cap does not obstruct the line of sight, and does not interfere with the fingers, so that the take-out operability of the automatic pencil lead is improved.

Further, according to the invention of claim 2, since the cap is not separated from the main body, there is no doubt that the cap is lost.

According to the invention of claim 3, the cap is moved up and down with respect to the main body shaft, and when the automatic pencil lead is formed in and out, and when the automatic pencil lead is not overflowed, the user can form the front shaft according to the "spherical projection". The fitting sound emitted when the upper locking rib or the lower locking rib is applied, and it is easy to know whether the cap has moved to the predetermined position, and the operability becomes good.

According to the invention of claim 4, in the operation of moving the cap up and down, the finger can be prevented from slipping, and the operability is improved.

1‧‧‧Automatic pencil lead container

2‧‧‧caps

3‧‧‧ head crown

4‧‧‧ front axle

5‧‧‧ body axis

6‧‧‧ Protrusion

7‧‧‧ openings

8‧‧‧ 盖部

9‧‧‧Spherical protrusions

10‧‧‧Upper ribs

11‧‧‧Lower locking rib

12‧‧‧Upper card stop

13‧‧‧ sliding groove

14‧‧‧Protruding opening

15‧‧‧Lower card stop

16‧‧‧Automatic pencil lead

17‧‧‧Circumferential ribs

18‧‧‧ recess

19‧‧‧Bevel

20‧‧‧Circumferential ribs

21‧‧‧ convex

22‧‧‧Bevel

23‧‧‧Steps

24‧‧‧ sloped surface

25‧‧‧Flat Department

26‧‧‧Clocking ditch

27‧‧‧ rod protrusion

28‧‧‧ crown crown ribs

29‧‧‧Bevel

30‧‧‧Relief

31‧‧‧Inside opening

32‧‧‧Cap

33‧‧‧ front axle

34‧‧‧Captive ribs for cap loading and unloading

35‧‧‧Upper ribs

36‧‧‧Sliding groove

37‧‧‧ openings

38‧‧‧ front axle

39‧‧‧Upper ribs

40‧‧‧Lower locking ribs

41‧‧‧Sliding groove

42‧‧‧Upper card stop

43‧‧‧Spherical protrusions

44‧‧‧ 盖部

45‧‧‧Protruding opening

46‧‧‧ Protrusion

47‧‧‧ openings

48‧‧‧Lower locking rib

49‧‧‧ openings

50‧‧‧ Protrusion

51‧‧‧Protruding opening

52‧‧‧Inside wall

53‧‧‧Cap

54‧‧‧Spherical protrusions

Fig. 1 is a longitudinal sectional view showing an embodiment of the present invention.

Fig. 2 is an exploded view showing an embodiment of the present invention.

Fig. 3: (a) is a plan view of the cap 2, and (b) is a front view of the cap 2.

Fig. 4 is a perspective view of the crown 3.

Fig. 5: (a) is a plan view of the front axle 4, (b) is a front view of the front axle 4, (c) is a longitudinal sectional view of the front axle 4, and (d) is a perspective view of the front axle 4.

Fig. 6: (a) is a front view of the body shaft 5, and (b) is a perspective longitudinal sectional view of the body shaft 5.

Fig. 7 (a) is an external view seen from above when the mechanical pencil core 16 can be taken out, and (b) is an external view seen from the front when the mechanical pencil core 16 can be taken out, (c) It is an external view seen from the oblique upper side when the state in which the automatic pencil lead 16 can be taken out is formed.

Fig. 8 is a longitudinal sectional view showing the automatic pencil lead 16 taken out.

Fig. 9 (a) is an external view seen from above when the automatic pencil lead 16 is stored so as not to overflow, and (b) is an external view seen from the front when the automatic pencil lead 16 is stored so as not to overflow. (c) is an external view seen from obliquely above when the automatic pencil lead 16 is stored so as not to overflow.

Fig. 10: (a) is a plan view of the cap 32 of the second example, and (b) is a front view of the cap 32 of the second example.

Fig. 11 is a front view of the front shaft 33 of the second example, and (b) is a perspective view of the front shaft 33 of the second example.

Fig. 12: (a) is a front view of the front axle 38 of the third example, (b) is a side view of the front axle 38 of the third example, and (c) is a perspective view of the front axle 38 of the third example.

Fig. 13 is a plan view of the cap 53 of the third example, and (b) is a front view of the cap 53 of the third example.

Hereinafter, embodiments of the present invention will be described with reference to Figs. 1 to 6 . The automatic pencil lead container 1 is formed by a cap 2, a crown 3, a front axle 4, and a body shaft 5.

The cap 2 is formed in a hollow cylindrical shape, and four spherical protrusions 9 are formed in the vicinity of the intermediate portion in the axial direction of the inner surface. The arrangement intervals of the four spherical protrusions 9 form the following positional relationship: six balls are formed The protrusions are arranged at equal intervals, and then two of them are removed relative to each other. On the upper surface, the notch-shaped locking grooves 26 are formed in two opposite directions. In the outer peripheral portion, a plurality of rod-like projections 27 are formed at equal intervals.

The crown 3 is formed in a hollow cylindrical shape, and a lid portion 8 extending toward the center line in the axial direction is formed on the inner surface. The lid portion 8 is formed such that it does not reach the length of the position "over the center line". An opening portion 7 having a hollow portion is formed on the inner surface. In the outer peripheral portion, the crown engaging ribs 28 are formed in two opposite directions.

The front shaft 4 is formed in a lid cylindrical shape, and a cylindrical projection 6 is formed on the upper portion. The protrusion 6 is formed with a protrusion opening portion 14 that protrudes from the uppermost surface of the front shaft 4 toward the lowermost side. The inner surface opening portion 31 is connected to the projection opening portion 14 in a portion where the "protrusion 6" and the "cover portion of the front shaft 4" are connected. On the upper outer circumference, an upper locking surface 12 that faces downward in the axial direction is formed. A sliding groove 13 having a spiral female thread shape is formed in a lower portion of the upper locking surface 12. Groove formation: 6 female threads are formed at equal intervals. "relative One set of two grooves which are opposite to each other in the center line in the axial direction is filled, and four sliding grooves 13 functioning as female threads are formed. Two sets of upper locking ribs 10 and lower locking ribs 11 are formed on one set of two sliding grooves 13 that are "point symmetrical with respect to the center line in the axial direction", and the upper locking ribs 10 are formed. The lower locking rib 11 is formed at an upper portion in the axial direction of the groove and is point-symmetric with respect to the axial center line. On the outer circumference of the lower portion of the shaft, two circumferential ribs 20 are formed in the circumferential direction of the shaft. Further, in order to intersect the circumferential rib 20, the projections 21 having the protrusion shape are formed in two opposite directions. A tapered portion 22 having a conical shape is formed in a lower portion of the convex portion 21. In the intermediate portion of the shaft, a stepped portion 23 having a step shape is formed. The inside of the shaft is formed such that the inclined surface 24 which is inclined is formed by using the inner surface opening portion 31 as a starting point as viewed in the longitudinal section. On the side surface, two flat portions 25 of the planar portion are formed to face each other. On the innermost surface of the lowermost portion, a tapered surface portion 29 having a conical shape is formed. The outermost diameter of the upper locking surface 12 in the circumferential direction is formed to be larger than "the distance between one set of two spherical projections 9 facing each other".

The main body shaft 5 is formed in a bottomed cylindrical shape, and two circumferential ribs 17 are formed in the circumferential direction of the shaft in the vicinity of the opening of the inner surface of the main body shaft 5. In the vicinity of the opening, in order to meet the circumferential rib 17, two recessed portions 18 are formed in the opposite direction. A conical portion 19 having a conical shape is formed in a lower portion of the recess 18. The uppermost surface of the main body shaft 5 is referred to as a lower locking surface 15. The outermost diameter of the lower locking surface 15 in the circumferential direction is formed to be larger than "the distance between one set of two spherical projections 9 facing each other".

In the present embodiment, the sliding groove 13 formed in the front axle 4 is 4 The number of articles is not limited to four, but it is necessary to have two or more. In order to stably move the cap up and down, it is preferable to have three or more.

Further, the number of the spherical projections is the same as the number of the sliding grooves, and when it is necessary to "form a smaller number", in order to stably move the cap up and down, it is preferable to have three or more.

In the assembly process, the cap 2 and the front axle 4 are first assembled. The lower portion of the front axle 4 is inserted into the upper portion of the cap 2 so that the spherical projections 9 are aligned with the sliding grooves 13. Fixing the front axle 4, by applying a force to the cap 2 "rotating counterclockwise when viewed from the top of the cap 2", the cap 2 is relatively rotated with respect to the front axle 4 and raised upward in the axial direction by When the "spherical projection 9 has passed the lower locking rib 11", the cap 2 and the front shaft 4 are engaged with each other in a state of being rotatable and moving up and down.

After the cap 2 is engaged with the front axle 4, assembly with the body shaft 5 is performed. The lower portion of the front shaft 4 is inserted toward the opening of the body shaft 5, and the convex portion 21 is aligned with the concave portion 18. At this time, the positioning in the rotational direction is formed by the action of the inclined surface portion 22. The circumferential rib 20 is engaged by the circumferential rib 17, and the step portion 23 is positioned in the vertical direction by abutting against the lower locking surface 15, and the front shaft 4 and the body shaft 5 are separated from each other. Further, the concave portion 18 and the convex portion 21, the inclined surface portion 22, and the inclined surface portion 19 are engaged with each other to be prevented from rotating.

Finally, the crown 3 is fixed to the cap 2. The ball-shaped projection 9 passes over the upper locking rib 10, and is sandwiched between the upper locking surface 12 and the upper locking rib 10 and the sliding groove 13, and the lid portion 8 covers the projection opening portion 14 to be locked. The groove 26 is engaged with the crown locking rib 28.

The operation of inserting the automatic pencil lead 16 can be performed without limitation after all the assembly ends or before the "combination of the cap 2 and the front shaft 4" is assembled with the main body shaft 5.

The automatic pencil lead 16 accommodated in this example is a cylindrical shape having a diameter of 0.5 mm and a length of 60 mm, and is called a thin pencil-shaped pencil lead of a mechanical pencil, but it can also be a holder of a mechanical pencil. A thicker core can be used for writing, and is called a refill of a leadholder type writing instrument.

Although the cap 2 can be rotated in the present case with the up and down movement, it is not necessary to rotate frequently.

Next, the action of the present invention will be described based on Figs. 7 to 9 .

In order to take out the mechanical pencil core 16 from the projection opening portion 14, in the operation of projecting the projection 6 from the opening portion 7, the spherical projection 9 formed on the inner surface of the cap 2 is first formed on the upper portion of the front axle 4 to be locked. The surface 12, the upper locking rib 10, and the sliding groove 13 are held by each other, and are fixed in a state where they cannot move up and down. The body shaft 5 is fixed, and by applying a force to the cap 2 "rotating in a clockwise direction as viewed from the top of the cap 2", the cap 2 is relatively rotated with respect to the body shaft 5 and is slid downward in the axial direction. By the "spherical projections 9 over the upper locking ribs 10", the spherical projections 9 are relatively rotatable in the sliding grooves 13 with respect to the main body shaft 5, and are slid downward in the axial direction. That is, the cap 2 is integrally formed to rotate and slides downward in the axial direction. At this time, the lid portion 8 positioned at a position covering the protrusion opening portion 14 is also moved in conjunction with the cap 2, thereby releasing the cover portion 8 from covering the protrusion opening portion 14, The protrusion 6 is caused to protrude from the opening portion 7. In other words, the automatic pencil lead 16 can be formed to enter and exit from the protrusion opening portion 14. Further, the spherical protrusions 9 are held by the lower locking surface 15 and the lower locking ribs 11 and the sliding grooves 13 beyond the lower locking ribs 11, and are fixed in a state where they cannot be moved up and down. That is, the cap 2 is also fixed, and the operation of the automatic pencil lead 16 to enter and exit can be stably performed, and since the cap 2 does not cover the line of sight, the finger does not interfere with the finger, and the take-out operation of the automatic pencil lead is changed. Good.

When the automatic pencil lead 16 is taken out, the automatic pencil core container 1 is tilted as a whole, and the projection opening portion 14 faces downward, and the bevel portion 29 and the inclined surface 24 are formed to stably slide the automatic pencil lead 16 toward the inner surface opening portion 31. It can be smoothly performed: the automatic pencil lead 16 is taken out from the projection opening portion 14.

When the automatic pencil lead 16 is taken out, since the automatic pencil lead 16 is stored so as not to overflow, in the operation of covering the protruding opening portion 14 by the lid portion 8, first, the spherical protrusion 9 formed on the inner surface of the cap 2 is lowered. The locking surface 15 and the lower locking ribs 11 and the sliding groove 13 are held by each other, and are fixed in a state where they cannot move up and down. The main shaft 5 is fixed, and by the force applied to the cap 2 "rotating in the counterclockwise direction from the upper side of the cap 2", the cap 2 is relatively rotated with respect to the main body shaft 5 and raised upward in the axial direction. By the "spherical projections 9 passing over the lower locking ribs 11", the spherical projections 9 are relatively rotatable in the sliding grooves 13 with respect to the main body shaft 5, and are raised upward in the axial direction. At this time, the crown 3 is also moved in conjunction with the cap 2, whereby the lid portion 8 is moved to a position where the projection opening portion 14 is masked, and the mechanical pencil core 16 cannot be taken out. That is, the automatic pencil lead 16 can be stored so as not to overflow. In addition, the spherical protrusions 9 are held by the upper locking surface 12, the upper locking ribs 10, and the sliding grooves 13 beyond the upper locking ribs 10, and are fixed in a state where they cannot move up and down. In other words, the cap 2 is also fixed, and the state in which the lid portion 8 covers the projection opening portion 14 is maintained, and the pencil core is accommodated.

Since the outermost diameter of each of the upper locking surface 12 and the lower locking surface 15 is larger than the distance between the two sets of the two spherical projections 9 facing each other, the spherical projection 9 cannot pass over the upper locking surface 12 The lower locking surface 15 is provided. In other words, even if a large amount of force is applied to the cap 2 "from the top of the cap 2, clockwise or counterclockwise", the cap 2 will not be separated, and there is no doubt that the cap is lost.

By inserting "a group of two grooves facing each other in a point symmetrical manner with respect to the center line in the axial direction of the sliding groove 13", the insertion of the front shaft 4 into the cap 2 is performed in the assembly work. The positioning is not limited to six types, but is limited to two types, and the positioning when assembling the crown 3 and the cap 2 is also limited to two types. In the case where the groove of the sliding groove 13 is not filled, six types of insertion and positioning are required, and the assembly work becomes complicated.

By forming the "planar portion 25 formed on the front shaft 4", it is possible to eliminate the fact that the mold cannot be demolded by performing the injection molding using a mold called a split mold, and the molding can be smoothly performed.

Next, a description will be given of the second example. The content shown in Fig. 10 is a cap 32 in which the cap and the crown are integrally formed. The content shown in Fig. 11 is the front shaft 33 when the cap and the crown are integrally formed. The order of assembly is different from the embodiment. First, the front axle is made in the same way as the embodiment. 33 is engaged with the body shaft 5. Next, the cap 32 is engaged with the front shaft 33. The lower portion of the cap 32 is inserted into the upper portion of the front shaft 33, and the spherical projection 43 is aligned with the sliding groove 36 through the opening portion 37. The front shaft 33 is fixed, and by applying a force to the cap 32 "rotating clockwise from the top of the cap 32", the cap 32 is relatively rotated toward the front shaft and descends downward in the axial direction by "ball" The cap 43 is gripped by the cap attaching and detachable locking rib 34, the upper locking rib 35, and the sliding groove 36, and is fixed in a state in which it is not movable up and down.

In order to take out the mechanical pencil core 16 from the projection opening portion 45, in the operation of projecting the projection 46 from the opening portion 47, first, the spherical projection 43 formed on the inner surface of the cap 32 is attached to the cap of the front shaft 33. The locking ribs 34, the upper locking ribs 35, and the sliding grooves 36 are held by the locking ribs 34, and are fixed in a state where they cannot be moved up and down. The body shaft 5 is fixed, and by applying a force to the cap 32 "rotating clockwise from the upper side of the cap 32", the cap 32 is relatively rotated with respect to the body shaft 5 and is slid downward in the axial direction. By the "spherical projections 43 over the upper locking ribs 35", the spherical projections 43 are relatively rotatable with respect to the main body shaft 5 in the sliding grooves 36, and are slid downward in the axial direction. That is, the cap 32 is integrally formed to rotate and slides downward in the axial direction. At this time, the lid portion 44 positioned at the position where the projection opening portion 45 is masked is also moved in conjunction with the cap 32, thereby releasing the cover portion 44 from the projection opening portion 45, and the projection 46 is protruded from the opening portion 47. .

In other words, the automatic pencil lead 16 can be formed to enter and exit from the protrusion opening portion 45. Further, the spherical projection 43 is held by the lower locking surface 15 and the lower locking rib 48 and the sliding groove 36 beyond the lower locking rib 48. It is fixed in a state where it cannot move up and down. That is, the cap is also fixed, and the operation of the automatic pencil lead 16 can be stably performed, and since the cap does not cover the line of sight, the finger does not interfere, and the take-out operation of the automatic pencil lead becomes good. .

Further, the second example is characterized in that the number of parts can be reduced and the assembly work can be simplified by integrating the parts.

Next, a description will be given of the third example. In the case shown in Fig. 12, the front shaft 4 of the embodiment forms a spiral groove-shaped sliding groove, but in the third example, a linear sliding groove 41 is formed. In Fig. 13, a cap 53 is formed in which two spherical protrusions 54 are formed on the inner surface.

In the assembly process, as in the embodiment, the cap 53 and the front axle 38 are first assembled. The lower portion of the front shaft 38 is inserted into the upper portion of the cap 53 so that the spherical projection 54 is aligned with the sliding groove 41 through the opening portion 49. The front shaft 38 is fixed, and by applying a pressing force to the cap 53 and passing the ball protrusion 54 over the lower locking rib 40, the cap 53 and the front shaft 38 are engaged in a state of being movable up and down. . After the cap 53 is engaged with the front shaft 38, assembly with the body shaft 5 is performed in the same manner as in the embodiment, and the crown 3 is engaged.

In order to take out the mechanical pencil core 16 from the projection opening portion 51, in the operation of projecting the projection 50 from the opening portion 7, first, the spherical projection 54 formed on the inner surface of the cap 53 is formed on the upper portion of the front shaft 38. The surface 42 and the upper locking rib 39 and the sliding groove 41 are held by each other, and are fixed in a state where they cannot move up and down. The body shaft 5 is fixed, and a force of "turning clockwise from the upper surface of the cap 53" is applied to the cap 53, and the spherical protrusion 54 passes over the upper locking rib 39 to make the spherical protrusion 54 relative to the ontology The shaft 5 forms a relative rotation in the sliding groove 41. That is, the cap 53 is integrally formed to rotate. At this time, the lid portion 8 located at the position where the projection opening portion 51 is masked is also moved in conjunction with the cap 53 to release the cover portion 8 from the projection opening portion 51. The spherical protrusion 54 abuts against the inner wall portion 52 by the rotation. After the spherical protrusion 54 abuts against the inner wall portion 52, the ball-shaped projection 54 is slid downward in the axial direction in the sliding groove by applying a force toward the lower surface in the axial direction of the cap 53. In other words, the cap 53 integrally rotates and slides downward in the axial direction. At this time, the protrusion 50 protrudes from the opening portion 7. That is, the automatic pencil lead 16 can enter and exit from the protrusion opening portion 51. Further, the spherical protrusions 54 are held by the lower locking surface 15 and the lower locking ribs 40 and the sliding grooves 41 beyond the lower locking ribs 40, and are fixed in a state in which they are not movable up and down. That is, the cap 53 is also fixed, and the entry and exit operation of the automatic pencil lead 16 can be stably performed, and the cap 53 does not obstruct the line of sight and does not interfere with the fingers, so that the take-out operability of the automatic pencil lead becomes good. Further, by forming the sliding groove 41 in a straight line, when the cap 53 is caused to move up and down, it is not necessary to continuously rotate, and the moving distance of the spherical portion can be shortened. The take-out operation of the automatic pencil lead 16 can be performed more quickly.

Claims (4)

A automatic pencil-core container having a configuration in which a cap formed on a inner surface of a cap and a sliding groove formed in a front shaft are configured to be movable up and down with respect to an axial direction of the body shaft, and is characterized in that The protrusion formed on the front shaft is detachable from the opening formed in the crown, and the opening formed in the protrusion is covered by the lid formed on the crown. The automatic pencil core container according to the first aspect of the invention, wherein the spherical protrusion is formed so as not to pass over an upper locking surface formed on the front shaft and a lower locking surface formed on the main body shaft. The automatic pencil core container according to the first aspect of the invention, wherein the spherical projections emit a fitting sound when the upper spherical locking ribs and the lower locking ribs formed on the front shaft pass. The automatic pencil core container according to claim 1, wherein a plurality of rod-shaped projections are formed on an outer peripheral portion of the cap.