JP2605798Y2 - mechanical pencil - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a rod-shaped dispensing container for rotating rod-shaped objects such as a rubber eraser, a lipstick, a correction stick, a writing core, a fluorescent core, a sticky glue, and a path. Related to a mechanical pencil provided with.

[0002]

2. Description of the Related Art Conventionally, as this kind of mechanical pencil, for example, there is one described in Japanese Utility Model Laid-Open No. 1-59686 . In this mechanical pencil, a writing shaft is housed in an outer cylinder, a spiral groove is provided in an inner surface of a rear portion of the cylindrical cap, and a guide cylinder is axially immovably inserted into the cylindrical cap so as to be relatively rotatable. A guide groove extending in the axial direction is provided in the rear portion, and a holder having a projection on the side surface that fits into the spiral groove is slidably fitted into the guide tube through the guide groove, and the front portion of the guide tube is It extends to the inner surface of the rear part of the cylinder, and the front part is axially movable with respect to the outer cylinder and is locked in the rotation direction.

[0003]

In such a conventional mechanical pencil, since the cylindrical cap is attached so as to cover the rear part of the outer cylinder, the outer diameter of the cylindrical cap becomes larger than the outer diameter of the outer cylinder. ing. The cylindrical cap must have a length at least equal to the length of the rod-shaped object, and will have a certain length at the rear of the mechanical pencil. Therefore, there is a problem that some people may find it difficult to hold.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a mechanical pencil that can be provided with a rod-shaped object feeding container without increasing the outer diameter of the rear portion of the mechanical pencil.

[0005]

According to a first aspect of the present invention, there is provided a mechanical pencil having an outer cylinder, a core tank provided in the outer cylinder and having a rear opening end.
The front tank has a front receiving port into which the rear opening end of the core tank is fitted, and a rear receiving port communicating with the front receiving port via a passage. and pedestal comprises a stick-shaped material propelling container, the said stick-shaped material propelling container includes a cylindrical body having a spiral groove in the inner surface, fitted rotatably and axially immovable in the tubular body A guide cylinder having a guide groove extending in the axial direction, a holder having a protrusion on the side surface that fits into the spiral groove through the guide groove, and a holder that is inserted into the guide cylinder and holds a rod-shaped object; A front portion of the rod-shaped material feeding container is inserted into an outer cylinder, a front portion of the cylindrical body is surrounded in the outer cylinder, and a front end of the guide cylinder is a rear side of the receiving stand. It is fitted into the receptacle to prevent rotation of the receiving stand and the guide cylinder. Characterized in that it is issued.

According to a second aspect of the present invention, in the first aspect, the receiving table is slidably in contact with the inner surface of the outer cylinder. According to a third aspect of the present invention, in the first or second aspect, the holder is provided with a slit penetrating in an axial direction on a side surface portion where the protrusion does not exist.

According to a fourth aspect of the present invention, in the first to third aspects, the front end of the guide tube is a closed end that is fitted into a rear receiving opening of the pedestal. Closes the passage of the cradle.

[0008]

According to the first aspect of the present invention, since the front portion of the rod-shaped material feeding container is inserted into the outer cylinder and the front portion of the cylindrical body is surrounded by the outer cylinder, the rod-shaped material feeding container is provided. The outer diameter of the entire container can be smaller than the outer diameter of the outer cylinder. Therefore, the rod-shaped object feeding container does not become bulky at the rear portion of the mechanical pencil, and the outer diameter of the rear portion of the mechanical pencil does not increase.

When the rod is unreeled, the relative rotation between the outer cylinder and the cylindrical body causes the outer cylinder to be prevented from rotating with the guide cylinder via the receiving table. Relative rotation occurs, the holder is guided by the guide groove along the spiral groove, moves in the axial direction, and the rod-like object held by the holder is fed out. According to the invention of claim 2, when refilling the core,
Remove the rod-shaped feeding container from the outer cylinder, and insert the wick into the wick tank from the rear receiving port of the cradle.
Since the cradle is slidably in contact with the inner surface of the outer cylinder, the core does not get caught between the cradle and the outer cylinder.

According to the third aspect of the present invention, since the holder is provided with the slit, when the holder is fitted into the guide groove when the holder is assembled into the guide groove, the holder is sufficiently bent over the entire axial direction. No it can, fitted becomes easy. In particular, when the outer diameter of the rod-shaped feeding container becomes smaller, the outer diameter of the holder also becomes smaller, and it becomes more difficult to fit the holder into the guide groove. However, by providing such a slit, the holder can be easily fitted into the guide groove. Will be possible.

Since the holder can be sufficiently bent by the slit even after being assembled, even if the cylindrical body is forcibly rotated in use with the holder at both ends of the spiral groove during use, the holder is still in a spiral state. It can flex inward beyond the ridge between the groove and the spiral groove and run idle, reducing the risk of breaking the spiral groove or protrusion. In the invention according to claim 4, the front end of the guide tube is a closed end fitted into the rear receiving port of the pedestal, and the closed end closes the passage of the pedestal, so that the core tank is closed. To prevent the core from falling off from behind.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing a main part of an embodiment of a mechanical pencil provided with a stick-shaped object feeding container.
(B) shows an enlarged view of the holder. In the drawing, reference numeral 1 denotes an outer cylinder of a mechanical pencil, and the front of a rod-shaped object feeding container 10 is detachably inserted into a rear portion of the outer cylinder 1, and the rod-shaped object feeding container 10 is incorporated as a container for feeding an eraser. Have been.

The container 10 for feeding out a rod-shaped object is mainly composed of a cylindrical body 12 having a spiral groove 18 on the inner surface, a guide cylinder 14 fitted in the cylindrical body 12, and a guide cylinder 14 fitted in the guide cylinder 14. The holder 16 is provided. The guide tube 14 has two guide grooves 20 extending in the axial direction at a portion corresponding to the spiral groove 18, an annular step portion 22 at the head, and a stopper 24 formed by cutting and raising the front portion. Is a closed end 15.
A metal metal ring 26 covering the head is mounted on the head of the guide cylinder 14, and the inner step 27 is fixed by contacting the annular step 22 to improve the appearance. . Note that the metal ring 26 does not necessarily need to be separate, and may be integrated with the annular step portion 22. Further, it is not limited to metal and may be made of plastic. A key 25 (see FIG. 3) is formed on the front peripheral surface of the stopper 24 so as to fit with the receiving base 2 which is installed inside the outer cylinder 1 while being prevented from rotating around the outer cylinder 1. A key groove 2d that fits with the key 25 is formed on the inner surface of the base 2,
The rotation stop between the receiving stand 2 and the guide cylinder 14 is performed.

The stopper 24 comes into contact with the front end face of the tubular body 12, while the metal ring 26 comes into contact with the rear end face of the tubular body 12, so that the guide cylinder 14 moves with respect to the tubular body 12.
It is not rotatable in the axial direction and is rotatably fitted. Holder 16
Is a cylindrical holder body 2 as shown enlarged in FIG.
8 and two holding pieces 30 for holding the rod-shaped object 36, and a projection 32 that fits into the spiral groove 18 through the guide groove 20 is provided on the outer periphery of each holding piece 30. The inner distance between the two holding pieces 30 is configured to be substantially equal to the outer diameter of the holder body 28, and the holding pieces 30
0 is slidably engaged. Further, the holder main body 28 is provided with a slit 34 penetrating in the axial direction on a side surface portion where the projection 32 does not exist.

In order to manufacture the holder 16, the holder 16 may be formed by a mold using a pin corresponding to the slit 34.
It can be manufactured easily with a single molding. Next, the assembling of the stick-shaped object feeding container 10 of the present embodiment will be described based on the exploded view shown in FIG. First, guide tube 1
4, the holder 16 is inserted from the head. At this time, since the holder 16 is provided with the slit 34, the holder 16 bends inward over the entire axial direction, and the projection 32 passes through the head of the guide cylinder 14 and easily fits into the guide groove 20. be able to. The width w of the slit 34 (FIG. 2B)
In order to ensure this fitting, it is preferable that at least a size corresponding to the total height of the two protrusions 32 is used.
Next, the metal ring 26 is passed from the front of the guide tube 14.
At this time, the stopper 24 is bent and bent inward so that the metal ring 26 can pass therethrough. Then, when the metal ring 26 passes through the holder 16, the Is bent inward again over the entire axial direction, and the metal ring 26
You can pass over. Thus, the annular step 2
2 until the inner step 27 abuts on the metal ring 26.
To move. Guide tube 14 with holder 16 and metal ring 2
After the cylindrical member 12 is attached, the cylindrical member 12 is placed over the guide tube 14 or the like from the front of the guide tube 14.
Is fixed.

As described above, when the holder 16 is attached to the guide cylinder 14 and when the metal ring 26 is attached to the guide cylinder 14, the projections 32 are securely bent inward by the slits 34 of the holder 16. Can be assembled. The front part of the rod-shaped material feeding container 10 assembled in this manner is removably inserted into the outer cylinder 1, and the front part of the cylindrical body 12 is surrounded in the outer cylinder 1. The core tank 3 provided in the outer cylinder 1 has a rear opening end 3a.
The receiving table 2 is in close contact with the inner surface of the outer cylinder 1 and communicates with the front receiving port 2a into which the rear opening end 3a of the core tank 3 is fitted, and the front receiving port 2a via the passage 2c. Side receptacle 2b. The closed end 15 of the guide cylinder 14 is fitted in the rear receiving port 2b of the receiving base 2 to close the passage 2c of the receiving base 2 and prevent the lead from dropping from the lead tank 3.

In the case of drawing out the rod 36 of the mechanical pencil constructed as described above, the outer cylinder 1 is rotated with respect to the cylindrical body 12. The outer cylinder 1 is connected to the guide cylinder 1
4, the guide cylinder 14 is rotated with respect to the cylindrical body 12, and the holder 16 is guided by the guide groove 20 along the spiral groove 18, moves in the axial direction, and is held by the holding piece 30. The rod-shaped material 36 (the eraser in the present embodiment) protrudes from the tip of the head of the rod-shaped material feeding container according to the rotation direction.

The guide groove 2 is formed on the inner surface of the head of the guide cylinder 14.
If the insertion groove 23 is provided to extend to 0 and the holding piece 30 passes, the rod-like material 36 is consumed by use and becomes the remaining portion, and when the holder 16 moves to the head of the cylindrical body 12 to the maximum, Since the holding piece 30 protrudes from the container through the insertion groove 23, the remaining portion of the rod 36 can be easily removed. During use, after the user pulls out the rod 36 to the maximum extent, it may happen that the user rotates the cylindrical body 12 with respect to the guide tube 14 and tries to feed it out. Or, conversely, from the state in which the rod 36 is retracted to the maximum, the cylindrical body 12 may be further forced to rotate and retract with respect to the guide cylinder 14. In such a case, since the holder 16 is bent inward by the slit 34, the holder 16 can cross over the ridge between the spiral grooves 18, and the holder 16 is moved to the spiral groove 18 in response to excessive rotation. Idle at each end of. Therefore, the protrusion 32 of the holder 16 or the spiral groove 1
8 can be prevented from being destroyed.

In order to feed out the lead of the mechanical pencil, when the rod-shaped object feeding container 10 is knocked forward, the lead tank 3 moves forward in the outer cylinder 1 through the receiving stand 2 and a known lead sending mechanism (not shown). Can be driven to feed the wick. When refilling the core, the rod-shaped material feeding container 10 can be detached from the outer cylinder 1 and the core can be inserted into the core tank 3 from the rear receiving port 2b of the receiving table 2. At this time, since the receiving table 2 is in close contact with the inner surface of the outer cylinder 1, the core does not get caught between the receiving table 2 and the outer cylinder 1.

The mechanical pencil according to the present embodiment has a structure in which the front portion of the rod-shaped object feeding container 10 is inserted into the outer cylinder 1 and the front portion of the cylindrical body 12 is surrounded by the outer cylinder 1. The outer diameter of the entire rod-shaped feeding container 10 is set to the outer cylinder 1
Can be made smaller than the outer diameter of. Therefore, the stick-shaped object feeding container 10 does not become bulky at the rear portion of the mechanical pencil, and the outer diameter of the rear portion of the shaft of the mechanical pencil does not increase.

Further, since the holder 16 is provided with the slit 34, the holder 16 can bend inward over the entire axial direction, so that the holder 16 can be fitted into the guide cylinder 14 and the metal ring 26 can be attached. This can be easily performed, and the danger of breaking the spiral groove 18 or the projection 32 can be prevented even with excessive rotation. In particular, the front part of the stick-shaped material feeding container 10 is
Since it is configured to be inserted into the outer cylinder 1, the outer diameter is often smaller than before, and when the outer diameter of the rod-shaped feeding container 10 becomes smaller, the outer diameter of the holder 16 also becomes smaller, and the guide groove becomes larger. Although it becomes difficult to fit the holder 16 into the guide groove 20, it is possible to easily and quickly fit the holder 16 into the guide groove 20 by providing the slit 34.

[0022]

According to the first aspect of the present invention, the front portion of the rod-like material feeding container is inserted into the outer cylinder, and the front portion of the cylindrical body is surrounded by the outer cylinder. Since the outer diameter of the entire rod feeding container can be made smaller than the outer diameter of the outer cylinder, the rod feeding container does not become bulky at the rear of the mechanical pencil, and the outer diameter of the rear end of the mechanical pencil is larger than necessary. Does not become large.

According to the second aspect of the present invention, when refilling the core, the rod-shaped material feeding container is removed from the outer cylinder, and the core is inserted into the core tank from the rear receiving port of the receiving stand. However, at this time, since the receiving table is slidably in contact with the inner surface of the outer cylinder, the core does not get caught between the receiving table and the outer cylinder. According to the third aspect of the present invention, since the holder is provided with the slit, when the holder is inserted into the guide groove when the holder is assembled into the guide groove, the holder is sufficiently bent over the entire axial direction. Therefore , the fitting becomes easy.

In particular, when the outer diameter of the rod-shaped object feeding container becomes smaller, the outer diameter of the holder becomes smaller, and it becomes more difficult to fit into the guide groove. However, by providing such a slit, the holder can be easily and quickly inserted into the guide groove. Can be inserted. Since the holder can be sufficiently bent by the slit even after being assembled, even if the cylindrical body is forcibly rotated while the holder is at both ends of the spiral groove during use, the holder will not be screwed into the spiral groove. It can flex inward over the peaks between the grooves and run idle, reducing the risk of breaking the spiral groove or protrusion.

According to the invention of claim 4, the front end of the guide tube is a closed end fitted into the rear port of the pedestal, and the closed end closes the passage of the pedestal. Thus, it is possible to prevent the core from falling off the core tank.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a state in which a stick-shaped object dispensing container of the present invention is incorporated in a mechanical pencil.

FIGS. 2A and 2B are enlarged views showing a holder of the stick-shaped object feeding container of FIG. 1, in which FIG. 2A is a longitudinal sectional view, and FIG.

FIG. 3 is an exploded perspective view showing an assembly of the rod-shaped object feeding container of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer cylinder 2 Receiving stand 2a Front receiving port 2b Rear receiving port 2c Passage 3 Core tank 3a Rear open end 10 Rod feeding container 12 Tubular body 14 Guide cylinder 15 Closed end 16 Holder 18 Spiral groove 20 Guide groove 26 Metal ring 32 protrusion 34 slit

Continuation of front page (58) Fields investigated (Int.Cl. ⁷ , DB name) B43K 29/02 B43K 23/00 B43L 19/00 B43M 11/00 A45D 40/04 B65D 83/00

Claims (4)

(57) [Scope of request for utility model registration] An outer cylinder, a core tank provided in the outer cylinder and having a rear opening end, a front receiving port into which the rear opening end of the core tank is fitted, and communicating with the front receiving port via a passage. And a receiving table which is installed in the outer cylinder so as to be relatively non-rotatable in the outer cylinder, and a rod-shaped object feeding container, wherein the rod-shaped object feeding container has a spiral inside surface. a cylindrical body provided with a groove, the tubular body axial immovable rotatably be fitted inserted into a guide tube having a guide groove extending in the axial direction, it is fitted into the spiral groove through said guide groove protrusion Having a side surface, and a holder that is inserted into the guide cylinder and holds a rod-shaped material, comprising: a front portion of the rod-shaped material feeding container inserted into the outer cylinder,
A front portion of the tubular body is surrounded in the outer tube, and a front end of the guide tube is fitted in a rear-side receiving port of the receiver to prevent rotation of the receiver and the guide tube. A mechanical pencil characterized in that a rod-shaped object is fed out by a relative rotation with respect to a cylindrical body. 2. The mechanical pencil according to claim 1, wherein the receiving table is slidably in contact with an inner surface of the outer cylinder. 3. The mechanical pencil according to claim 1, wherein the holder is provided with a slit penetrating in an axial direction on a side surface portion where the protrusion does not exist. 4. The guide tube according to claim 1, wherein a front end of the guide tube is a closed end fitted into a rear receiving opening of the pedestal, and the closed end closes a passage of the pedestal. 3
The mechanical pencil according to any one of the above.