JP3118204B2 - Replacement lead case for mechanical pencil - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanical pencil refill housing that can be refilled one by one without rejecting hands when refilling a mechanical pencil.

[0002]

2. Description of the Related Art Conventionally, a mechanical pencil has been used as a writing instrument on a daily basis. The mechanical pencil is used after refilling a refill through a refill refill hole. On the other hand, refills of mechanical pencils are sold in a refill storage case in units of about 30 pieces. The following method can be considered as a method of taking out a refill from the refill accommodation case and refilling the refill into the mechanical pencil through the refill refill hole of the mechanical pencil.

[0003] One method is to align the replacement core outlet of the replacement core storage case coaxially with the replacement core replenishing hole of the mechanical pencil, and then turn the replacement core removal outlet of the replacement core storage case downward. A method of refilling the refilled lead from the refillable lead case at the same time as refilling the refilled lead into a refilled lead refilling hole of a mechanical pencil can be cited. A method of taking out several refills with the outlet facing downward, grasping and retrieving several refills by hand, and refilling the grabbed refills into the refill refill holes of the mechanical pencil can be cited.

However, in the former method, the shape of the refill lead-out opening of the refill lead storage case is often different from the shape of the refill lead refilling hole of the mechanical pencil. There is a possibility that some refills may fall out of the refill refill holes without being refilled into the refill refill holes of the mechanical pencil without any refills removed from the outlet. However, there is a problem that the replacement lead cannot be replenished into the replacement lead replenishing hole. Also, in the latter method, when refilling the refill hole of the mechanical pencil,
There was a problem that the hands were soiled each time because they were holding the extra lead.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a mechanical pencil refill accommodating case which can remove a refill one by one without soiling hands and refill it into a refill refill hole of a mechanical pencil. To provide.

[0006]

According to a first aspect of the present invention, there is provided a refill lead case for a mechanical pencil, wherein a refill lead storage chamber and a wall member facing one side of the refill lead storage chamber are provided in a case body. The wall member has an inclined guide surface for guiding the refill accommodated in the refill accommodating chamber diagonally upward toward one side, and a refill reentrant upward from an upper inclined end of the guide surface. A contact receiving surface is provided, and an elongated accommodating groove capable of accommodating one extra lead is provided at an upper inclined end of the guide surface at a lower end of the extra lead contact surface.
, And the replacement core housed in the elongated accommodating groove can be taken out of the case body through the elongated accommodating groove.

According to a second aspect of the present invention, there is provided a refill lead accommodating case for a mechanical pencil, wherein the front end of the refill lead accommodating chamber is closed while the refill lead accommodating chamber is closed. The front end of the elongated accommodating groove is open to the front wall surface of the case main body, and the open end is openably and closably closed by a lid member provided on the front wall surface of the case main body.

According to a third aspect of the present invention, there is provided a refill lead storage case, wherein a refill lead storage chamber and a wall member facing one side of the refill lead storage chamber are provided in the case body. The member is provided with an inclined guide surface that guides the refill lead accommodated in the refill lead storage chamber obliquely upward toward one side and a refill lead contact surface that faces upward from an upper inclined end of the guide surface. And at the lower end of the refill contact surface, an upwardly inclined end of the guide surface is provided with an arc-shaped groove in cross section, and the arc-shaped groove can accommodate one refill on its outer peripheral surface. It is characterized in that a stick body having an elongated accommodating groove formed in the length direction is removably inserted therein.

According to a fourth aspect of the present invention, there is provided the refill lead accommodating case of the mechanical pencil according to the first, second or third aspect, wherein the case main body and the wall member are separated from each other. The wall member is inserted and fixed in one side of the case main body to form the refill accommodation chamber in the other side of the case main body.

According to a fifth aspect of the present invention, there is provided the refill lead accommodating case of the mechanical pencil according to the first, second, or third aspect. Is formed integrally with the case body.

[0011]

The refill lead accommodating case of the mechanical pencil according to the present invention is provided with a refill lead accommodating chamber and a wall member in the case main body, and the wall member guides the refill lead toward one side. There is a slant guide surface and a refill lead abutment surface that is provided, and a slender housing groove that can store one refill lead is provided, so that the case body is positioned with the slant guide surface of the wall member on one side. When tilted in a direction that faces downward,
All the refills roll on the inclined guide surface toward the refill abutment surface, and are received by the refill abutment surface,
Only one of the refills is accommodated in the elongated accommodating groove. Even if the case body is restored from this state to the original state, the state in which one extra lead is accommodated in the elongated accommodating groove is maintained, and the other extra lead is returned to the extra lead accommodating chamber side. One of the refills accommodated in the elongated accommodating groove is opened on the front wall surface of the case body by, for example, tilting the case body so that the front wall side faces downward, as described in claim 2. Can be taken out from the opening end.

Further, in the refill lead accommodating case of the mechanical pencil of the present invention, a refill refill accommodating chamber and a wall member are provided in the case main body, and the refill lead is directed to one side in the wall member. The inclined guide surface and the replacement core contact surface are provided, and the inclined guide surface and the replacement core contact surface are provided continuously by an arc-shaped groove in cross section. Since the stick body with the elongated receiving groove formed on the surface is removably inserted, if the case body is inclined in the direction in which the inclined guide surface of the wall member is directed downward toward one side, all Of the replacement core rolls on the inclined guide surface toward the replacement core contact surface, and is received by the replacement core contact surface, and only one of the replacement cores is accommodated in the elongated receiving groove. Is done. Even if the case body is restored from this state to the original state, the state in which one extra lead is accommodated in the elongated accommodating groove is maintained, and the other extra lead is returned to the extra lead accommodating chamber side. One refill lead housed in the elongated receiving groove can be taken out by pulling out the stick body from the arc-shaped groove in cross section.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an example of a refill lead accommodating case of a mechanical pencil according to the present invention will be described with reference to the drawings. As shown in FIG. 1, the refill lead storage case of the mechanical pencil includes a case body 1 and a lid member 5. In one side of the case body 1, a wall member 2 is provided integrally over the entire length of the case body 1. The wall member 2 and the upper, lower, right Wall 1
A replacement lead storage chamber 3 is formed on the other side of the case main body 1 by the inner surfaces b, 1a, 1e and the front and rear wall surfaces 1c, 1d.

The wall member 2 has an inclined guide surface 2a inclined obliquely upward from the inner bottom wall surface 1a of the refill accommodation chamber 3 toward one side of the case main body 1, and an inclined guide surface 2a.
a replacement lead contact surface 2b extending upward from the upper inclined end
In addition, an elongated storage groove 2c that can store one replacement lead is formed at the upper inclined end of the inclined guide surface 2a at the lower end of the replacement lead contact surface 2b.

The other edge of the inclined guide surface 2a is smoothly abutted on the inner bottom wall 1a of the refill storage chamber 3 without any step, and the upper surface thereof is flat. The replacement core stored in 3 is smoothly inclined guide surface 2
Guided on a.

The refill abutment surface 2b is provided integrally with the refill lead storage surface 3a from the upper inclined end of the inclined guide surface 2a to the upper wall surface 1b of the refill storage chamber 3 obliquely upward toward the other side. And its surface is a smooth surface. The refill abutment surface 2b is formed by the inclined guide surface 2a.
The refill lead guided by the upper edge of a is received and the direction of the refill is matched with the direction of the elongated accommodating groove 2c, and the extra lead is smoothly stored in the elongate accommodating groove 2c. In FIG. 1, the refill lead abutment surface 2b is provided obliquely upward toward the other side, but as described above, the direction of the refill lead guided is the direction of the elongated accommodating groove 2c. And it may be provided vertically upward, or may be provided obliquely upward on one side.

The elongated receiving groove 2c is formed as a single groove having a semi-circular cross section large enough to accommodate only one refill core, and its front end is formed at the front wall surface 1c of the case body 1.
And formed in the replacement lead-out hole 4. The groove surface of the elongated accommodating groove 2c is a smooth surface, and the replacement lead accommodated in the elongated accommodating groove 2c can move smoothly on the groove surface in the longitudinal direction of the groove. Slides on the groove surface of the elongated accommodating groove 2c so that the extra lead can be taken out of the case main body 1 from the extra lead extraction hole 4 formed in the front wall surface 1c of the extra lead accommodating chamber 2 of the case main body 1. It is configured. As shown in FIG. 2, a plurality of protruding pieces 2d are formed at predetermined intervals with an upper surface formed in a concave arc shape on the groove surface of the elongated accommodating groove 2c and capable of stably receiving the replacement lead. The contact area between the replacement core and the groove surface may be reduced to reduce the resistance between the replacement core and the groove surface, and the replacement core may be configured to be able to move more smoothly on the groove surface of the elongated receiving groove 2c. Good.

The wall member 2 may be integrally formed on one side of the case body 1, or the wall member 2 formed separately on one side of the case body 1 may be inserted and fixed. It may be formed by doing.

Further, the front wall 1c of the case body 1 is provided with a lid member 5 having substantially the same shape as that of the front wall 1c for opening and closing the above-mentioned replacement lead hole 4 formed in the front wall 1c. The lid member 5 is for preventing the refill core housed in the elongated housing groove 2c from going out of the case body 1 when not in use. In FIG. 1, the front wall 1c of the case body 1 is shown.
A peripheral frame portion 6 having a U-shaped cross section in which a lid member 5 can be inserted is formed on the outer peripheral edge of the case body 1. Are provided integrally.

Next, a description will be given of a method of using the refill lead storage case of the mechanical pencil. As shown in FIG. 3A, the extra lead A is accommodated in the extra lead accommodating chamber 3 of the case main body 1. All the stored refill cores A roll on the inclined guide surface 2a, are received by the refill core contact surface 2b provided at the upper inclined end of the inclined guide surface 2a, and are prevented from moving further. One of these extra lead A
Is accommodated in an elongated accommodating groove 2c recessed downward from the lower end of the refill abutment surface 2b (FIG. 3B). Next, when the case main body 1 is returned to the original state, the above-mentioned extra lead A accommodated in the elongated accommodating groove 2c retains its state, and the other extra lead A is returned to the extra lead accommodating chamber 3 side. (FIG. 3
(C)).

When the replacement core A accommodated in the elongated accommodating groove 2c is tilted downward on the front wall surface 1c side of the case body 1, the elongated accommodating groove 2c is also integrally replaced with the core take-out hole 4 facing downward. , The extra lead A accommodated in the elongated accommodating groove 2c slides in the elongated accommodating groove 2c in the longitudinal direction toward the extra lead take-out hole 4, and the case body passes through the extra lead take-out hole 4. 1 slides out and is directly refilled in the refill hole 7 of the mechanical pencil (FIG. 3
(D)). In this way, the extra lead A stored in the extra lead accommodating case of the mechanical pencil is surely replenished to the mechanical pencil one by one and without soiling the hands.

In the above embodiment, the elongated accommodating groove 2c is provided integrally with the wall member 2, and the extra lead A accommodated in the elongated accommodating groove 2c is provided on the front wall 1c of the case main body 1. 4 describes a refillable lead case of a mechanical pencil that can be taken out through the slot 4. Next, the elongated receiving groove 2c
A refill lead storage case of a mechanical pencil having a structure for taking out the refill lead A, which is separate from the wall member 2, will be described.
The same parts as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 4, a wall member 2 provided integrally on one side of the case body 1 has an inclined guide surface 2a and a replacement core contact surface 2b over its entire length in the front-rear direction. An arc-shaped groove 2d into which a stick body 8 to be described later is inserted is formed.

The arc-shaped groove 2d is recessed in a continuous portion between the upper inclined end of the inclined guide surface 2a and the lower end of the replacement core contact surface 2b, and is smaller than the elongated accommodating groove 2c in the above embodiment. The groove 2d has a large diameter, and the groove surface of the arc-shaped groove 2d has a smooth surface. The front end of the groove 2d opens in the front wall surface 1c of the case body 1 and is formed in the stick body taking-out hole 9 to be inserted. The stick body 8 is configured to be able to be smoothly inserted and removed.

The stick body 8 to be inserted into the arcuate groove 2d is formed in a rod shape having a length slightly longer than the entire length of the arcuate groove 2d.
When the stick body 8 is inserted into the arc-shaped cross-section groove 2d, the outer peripheral surface located on the upper end opening side of the arc-shaped cross-section groove 2d has:
An elongated accommodating groove 2c having a semicircular cross section capable of accommodating one extra lead A is formed over the entire length in the longitudinal direction, and a front end of the elongated accommodating groove 2c is closed, while a rear end thereof is closed. The portion has an opening 2e, and the replacement lead A is formed so as to be able to be taken out through the opening 2e.

An annular projection 8a is formed on the outer peripheral surface of the front end portion of the stick body 8. When the stick body 8 is inserted into the arc-shaped groove 2d, the annular projection 8a is formed. The stick body 8 is formed so as to be engaged with the annular concave portion 2f formed on the front end groove surface of the arcuate groove 2d so as not to fall out of the arcuate groove 2d (FIG. 5).
reference). The engagement between the annular projection 8a and the annular recess 2f and the release thereof are adjusted to such an extent that the engagement can be easily performed by pushing or pulling by hand.

Next, a description will be given of a method of using the replacement lead accommodating case of the mechanical pencil. As shown in FIG. 6 (a), a refill A is provided in the refill accommodation chamber 3 of the case body 1.
The elongated accommodating groove 2c formed on the outer periphery of the stick body 8 is exposed on the extension line of the inclined guide surface 2a of the wall member 2 through the opening of the arcuate groove 2d. At this time, an arrow 8b is placed on the outer peripheral surface of the front end of the stick body 8.
And the stick body 8 in the direction of the arrow 8b
Is formed on the outer periphery of the case 1 and an arrow 1f is formed on the front wall 3c of the case body 1 to form the arrow 1f.
If the opening of the arc-shaped groove 2d is formed in the direction in which f is directed, the arrow 8b of the stick body 8 is formed.
The elongated housing groove 2c formed on the outer periphery of the stick body 8 can be exposed upward through the opening of the arc-shaped groove 2d by a simple method such that the arrow 1f of the case body 1 and the arrow 1f of the case body 1 coincide with each other. preferable.

When the case body 1 is tilted counterclockwise, all the refills A
Is rolled on the inclined guide surface 2a, and the extra lead A, which has rolled to the upper inclined end of the inclined guide surface 2a, comes into contact with the extra lead contact surface 2b provided at the upper inclined end, so that its direction is elongated and accommodated. After being matched with the direction of the groove 2c, one of the refill cores A is housed in the elongated housing groove 2c (FIG. 6).
(B)). Then, when the case main body 1 is returned to the original position, the other refill cores A stored in the elongated storage grooves 2c are returned to the refill core storage chamber 3 while maintaining the state of the refill cores A ( FIG. 6 (c)).

Thereafter, the stick body 8 is pulled out from the groove 2d having an arcuate cross section (FIG. 6 (d)), and the refill A is slid out through the opening 2e of the elongated accommodating groove 2c. 7 and refill the lead A (FIG. 6)
(E)).

[0030]

According to the first aspect of the present invention, the refill lead accommodating case of the mechanical pencil has a refill lead accommodating chamber and a wall member facing one side of the refill lead accommodating chamber in the case body. The wall member has an inclined guide surface for guiding the refill lead accommodated in the refill lead receiving chamber obliquely upward toward one side, and a refill lead contact surface that faces upward from an upper inclined end of the guide surface. And an elongated accommodating groove for accommodating one extra lead is provided at an upper inclined end of the guide surface at a lower end of the extra lead contact surface, and extends downward from a lower end of the extra lead contact surface.
And the extra lead accommodated in the elongated accommodating groove is configured to be taken out of the case main body through the elongated accommodating groove, so that the case main body is tilted in a predetermined direction. When the inclined guide surface is inclined downward toward one side, all the refills in the refill accommodating chamber can be smoothly and reliably guided to the upper inclined end by the inclined guide surface. The guided refill is received by the refill abutment surface and the direction thereof is matched with the direction of the elongated accommodating groove, so that the refill can be securely accommodated in the elongated accommodating groove. Through the case body out of the case body one by one,
Can be refilled with a mechanical pencil. Therefore, there is no need to grasp the extra lead by hand when removing the extra lead out of the case main body, so there is no need to worry about the hands getting dirty, and moreover, the extra lead can be taken out one by one without fail. When refilling the refill lead into the refill hole, the refill lead does not spill out of the refill refill hole of the mechanical pencil or does not overfill, and a predetermined amount of refill lead can be reliably refilled into the mechanical pencil.

According to a second aspect of the present invention, the front end of the refill accommodating chamber is closed, while the front end of the elongated accommodating groove of the refill is opened in the front wall surface of the case body. The opening end is closed by a lid member provided on the front wall surface of the case body so as to be openable and closable, so that the lid member is removed to open the front end of the elongated accommodating groove, and the elongated accommodating groove is opened. With a simple operation such as tilting the front wall side of the case body downward so that the front end of the groove faces downward, take out the refills housed in the elongated housing grooves one by one out of the case body and use a mechanical pencil. Can be replenished.

[0032] Finally, in the refill lead accommodating case of the mechanical pencil according to claim 3, a refill refill accommodating chamber and a wall member facing one side of the refill refill accommodating chamber are provided in the case body. An inclined guide surface for guiding the refill lead accommodated in the refill lead accommodating chamber toward one side obliquely upward, and a refill lead abutment surface upward from an upper inclined end of the guide surface; Are provided, and an arc-shaped groove is provided at the lower end of the refill abutment surface at the upwardly inclined end of the guide surface, and one refill core is provided on the outer peripheral surface of the arc-shaped groove. The stick body, which is formed with a slender housing groove that can be housed in the length direction, is inserted and removed so that the stick body can be removed from the arc-shaped groove without tilting the case body. With a simple operation such as pulling out, It can be taken out of the main body, and the pulled-out stick body can easily fit in the coaxial state with the refill refill hole of the mechanical pencil. be able to.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a replacement lead accommodating case of a mechanical pencil according to the present invention.

FIG. 2 is a cutaway enlarged perspective view showing a part of an elongated accommodating groove.

FIG. 3 is a view showing a procedure for taking out a refill lead from a refill lead storage case of the mechanical pencil of FIG. 1;

FIG. 4 is a perspective view showing another example of a replacement lead accommodating case of the mechanical pencil of the present invention.

FIG. 5 is a cutaway perspective view showing an annular projection of a stick body and an annular recess of an arc-shaped groove in cross section.

6 is a view showing a procedure for taking out a refill lead from a refill lead storage case of the mechanical pencil of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case main body 2 Wall member 3 Extra lead accommodation room 4 Extra lead extraction hole 5 Lid member 8 Stick body

Claims (5)

(57) [Claims] 1. A refill lead accommodating chamber and a wall member facing one side of the refill lead accommodating chamber are provided in a case body.
The wall member has an inclined guide surface for guiding the refill lead accommodated in the refill lead receiving chamber obliquely upward toward one side, and a refill lead contact surface that faces upward from an upper inclined end of the guide surface. And an elongated accommodating groove capable of accommodating one extra lead is provided at an upper inclined end of the guide surface at a lower end of the extra lead abutment surface from the lower end of the extra lead abutment surface.
A refill lead case for a mechanical pencil, wherein the refill lead is provided in a recessed shape and can be taken out of the case main body through the elongated storage groove. 2. A front end of the refill lead accommodating chamber is closed, while a front end of an elongated receiving groove of the refill lead is open on a front wall surface of the case body, and the open end is provided on a front wall surface of the case body. 2. A refill lead case for a mechanical pencil according to claim 1, wherein the case is removably closed by a lid member. 3. A replacement core storage chamber and a wall member facing one side of the replacement core storage chamber are provided in the case main body.
The wall member has an inclined guide surface for guiding the refill lead accommodated in the refill lead receiving chamber obliquely upward toward one side, and a refill lead contact surface that faces upward from an upper inclined end of the guide surface. Is provided and an arc-shaped groove is provided at the lower end of the contact surface of the replacement core at the upwardly inclined end of the guide surface, and the arc-shaped groove accommodates one replacement core on the outer peripheral surface. A refillable lead pencil case for a mechanical pencil, characterized in that a stick body having a possible elongated receiving groove formed in the length direction is removably inserted. 4. The case body and the wall member are formed separately from each other, and the wall member is inserted and fixed in one side of the case body, and the extra lead housing is accommodated in the other side of the case body. 3. The method according to claim 1, wherein a chamber is formed.
Or a replacement lead storage case for the mechanical pencil according to claim 3. 5. The refill accommodation of a mechanical pencil according to claim 1, wherein the wall member and the refill accommodation chamber are formed integrally with the case body. Case.