WO2013187456A1

WO2013187456A1 - Pencil sharpener

Info

Publication number: WO2013187456A1
Application number: PCT/JP2013/066280
Authority: WO
Inventors: 駿祐岡
Original assignee: カール事務器株式会社
Priority date: 2012-06-13
Filing date: 2013-06-12
Publication date: 2013-12-19
Also published as: JPWO2013187456A1

Abstract

Provided is a pencil sharpener which has a large capacity for containing pencil shavings and which is configured so that a pencil-shaving box does not become detached and fall while the pencil sharpener is carried by the user. A pencil sharpener (100) comprises a closed-end container member (110) having no lid and also comprises a lid member (120) for covering and sealing the opening (111) of the container member (110). An insertion hole (123) for inserting a pencil is provided in one side section (122) of the lid member. A pencil holding section (30), a rotary blade (40) which sharpens the pencil, and a cylinder (50) which holds the rotary blade in a rotatable manner are arranged below the lid member. A handle (27) is provided on the other side section (124) of the lid member. Substantially the entire containing region of the container member is utilized as the pencil-shaving box, and as a result, the pencil sharpener has a large capacity for containing pencil shavings. Also, since the container member is sealed by the lid member, there is no possibility of pencil shavings falling out due to the pencil-shaving box becoming detached while the pencil sharpener is carried by the user.

Description

Pencil sharpener

The present invention relates to a desktop pencil sharpener that turns a handle to sharpen a pencil, and relates to a pencil sharpener that has a high capacity for holding shavings and prevents spilling.

As shown in Japanese Utility Model Publication No. 50-1964, manual pencil sharpeners that are placed on a desk are rotated around the inserted pencil and the insertion hole into which the pencil is inserted. This is a structure in which a cutting part to be cut and a handle part for rotating the cutting part are arranged on the axis. The cutting part is arranged with a rotating blade having a helical cutting edge inclined in the cylinder, and a planet provided at the base of the rotating blade on a gear provided along the inner periphery of the cylinder by turning the handle. The gears mesh with each other, and the spiral blade is configured to move around the pencil while rotating itself and to sharpen the peripheral side surface.

Below the cutting part, a trash box for receiving pencil shavings is slidable with respect to the housing. When the shavings accumulate, the trash box is pulled out of the housing and the collected trash is discarded. .

Japanese Utility Model Publication No. 50-1964

Such a handle-type pencil sharpener can sharpen the pencil more efficiently than the one that rotates and sharpens the pencil, but the shavings that accumulate in the waste bin are faster, so the shavings are often removed. I had to throw it away. If neglected, shavings may overflow when removing the waste bin from the housing.
In addition, if the swarf accumulates in the trash box and continues to be used without noticing, the swarf is pushed back, and the functions of the rotary blade and cylinder may be impaired.

In particular, in the case of a desktop type manual pencil sharpener, the handle is rotated while being held down by hand, so it is often operated with the pencil sharpener placed at hand, so it is easy to carry, There is a high demand for the trash box not falling off when carrying.
Therefore, an object of the present invention is to provide a pencil sharpener that has a high capacity for storing shavings and can prevent the scrap box from falling off during carrying.

In order to solve the above problems, a pencil sharpener according to the present invention is a pencil sharpener comprising a bottomed and uncovered container member and a lid member that covers and seals the opening of the container member, An insertion hole for inserting a pencil is provided on one side of the lid member, a holding part for holding the pencil below the lid member, a rotary blade for cutting the held pencil, And a cylinder for rotatably holding the rotary blade, and a handle for moving around the pencil while rotating the rotary blade is provided on the other side of the lid member. Is.

In the present invention, a pencil sharpener is constituted by the container member and the lid member, and a mechanism for scraping the pencil is provided below the lid member, so that most of the storage area of the container member can be used as a waste box. it can. Thereby, it can be set as the pencil sharpener which is compact and has the high capacity | capacitance of shavings.
Further, since the container member is sealed by the lid member, there is no fear that the waste box will come off during carrying and the shavings will fall off.

The pencil sharpener which concerns on 1st Embodiment of this invention is shown, (a) is a front view, (b) is a side view, (c) is a rear view. The side view which shows the state which removed the cover member of the said pencil sharpener. It is explanatory drawing which shows the state which decomposed | disassembled the said cover member. It is a side view which shows a use condition. FIG. 2 shows a state in which a pencil is sharpened by the rotation of a rotary blade, where (a) is a state seen from the side surface, and (b) is an explanatory view seen from the arrow direction of the line AA. It is a perspective view which shows the 1st deformation | transformation aspect of the said pencil sharpener. It is a perspective view which shows the 2nd deformation | transformation aspect of the said pencil sharpener. It is an exploded view which shows the chuck mechanism of the said deformation | transformation aspect. The pencil sharpener which concerns on 2nd Embodiment of this invention is shown, (a) is a front view, (b) is a side view. It is a side view which shows the decompression mechanism of the said pencil sharpener, (a) is the state which removed the lid member, (b) is the state which attaches a lid member and decompresses the inside of a container member, (c) is a state of a container member The inside is decompressed. The modification of the said pencil sharpener is shown, (a) is a front view, (b) is a side view, (c) is a rear view. It is a fragmentary sectional view showing the 1st modification of the operation member of the above-mentioned pencil sharpener, (a) shows an initial state, and (b) shows the state where a bellows member is compressed. It is a fragmentary perspective view which shows the mechanism of the said operation member, (a) is an initial state, (b) shows the state which compresses a bellows member. It is explanatory drawing which shows the engagement state of the projection part at the time of pressing the operation part of the said mechanism, (a) is the state pressed, (b) is the state by which an operation member is rotated by releasing a press, ( c) shows a state in which the protruding portion is locked to the engaging portion and the compressed state of the bellows member is maintained. The 2nd modification of the operation member of the said pencil sharpener is shown, (a) is a front view, (b) is a side view, (c) is a rear view.

Preferred embodiments of the present invention will be described with reference to the accompanying drawings. In addition, embodiment is not limited to the following forms, Other aspects can also be implemented if the subject of this invention can be solved.

FIG. 1 shows a pencil sharpener 1 according to a first embodiment of the present invention.
The pencil sharpener 1 is a handle-type pencil sharpener that is used by being placed on a desk, and includes a container member 10 and a lid member 20.
As shown in FIG. 2, the container member 10 is a rectangular parallelepiped container having a bottom and no lid, and is made of a transparent synthetic resin material so that the state of accumulation of pencil shavings can be visually confirmed. Yes.
The opening 11 of the container member 10 is covered with a lid member 20, and the locking portion 12 provided at the upper end of the side surface is engaged with the locked portion of the lid member 20 to be sealed. The

The lid member 20 has a configuration in which side edges (22, 24) projecting downward are provided on both sides of the lid 21 that covers the opening 11 of the container member 10. One side edge 22 is provided with an insertion hole 23 for inserting a pencil, and the other side edge 24 is provided with a handle attachment hole 25 (see FIG. 3).
The pencil insertion hole 23 is provided with a clamping member 26 for clamping the pencil from the side surface. The clamping member 26 is a rubber ring member, and is attached to the inside of the insertion hole 26 so as to be biased toward the center.

A handle 27 is attached to the handle attachment hole 25 in a state of being assembled to a cutting mechanism 28 provided on the lower surface portion of the lid portion 21. A reverse rotation prevention mechanism 29 such as a ratchet is provided at the attachment portion of the handle 27 so as to be rotated only in the cutting direction.
Further, the handle 27a at the tip of the handle 27 is formed so as to be able to stand up in a direction perpendicular to the extending direction of the arm.

A cutting mechanism 28 for sharpening a pencil is provided on the lower surface of the lid 21. Hereinafter, the cutting mechanism 28 will be described in detail.
The pencil cutting mechanism 28 includes a holding unit 30 for holding a pencil, a spiral rotary blade 40 that sharpens the held pencil, and a cylinder 50 that rotatably holds the rotary blade 40.
The pencil holding portion 30 is configured by reducing the diameter of the cylindrical member 31 continuous from the insertion hole 23 provided in the one side edge portion 22 of the lid member 20 toward the tip. The cylindrical member 31 is attached to the cylinder 50 in a state where the axial center portion is positioned at the center of the rotating disk 32 rotated by the handle 27.

A bracket 33 is disposed on the peripheral side surface of the cylindrical member 31 with a slight inclination, and the shaft 41 of the rotary blade 40 is attached to the bracket 33. A cylindrical rotary blade 40 is rotatably attached to the shaft 41.
The base end portion of the rotary blade 40 (that is, the end portion on the side opposite to the mounting side to the bracket 33) is rotatably attached at the eccentric position of the rotary disk 32. At this time, one end portion of the cylindrical rotary blade 40 is attached to the inclined bracket 33 and the other end portion is attached to the rotating disk 32, so that the cylindrical member 31 is in a reduced diameter state (that is, the reduced diameter portion 31a). Tilt to correspond to.

A planetary gear 42 is fixed to the base end portion of the rotary blade 40, and meshes with an internal gear 51 provided on the inner periphery of the cylinder 50, whereby the rotary blade 32 is rotated by the rotation of the rotary plate 32 in accordance with the operation of the handle 27. 40 is configured to move around the pencil held in the holding unit 30 while rotating itself (see FIG. 4).
A plurality of spiral blades 43 are provided on the circumferential surface of the rotary blade 40. As shown in FIG. 5, the spiral blade 43 is rotated in the direction B in which the handle 27 is sharpened, so that the pencil 2 is locked by the blade tip 43a to the base end side D (that is, the handle 27 side). The cutting edge is in a state of cutting while being pulled.

That is, the blade edge 43a of the rotary blade 40 is directed in a direction C opposite to the direction in which the rotary blade 40 moves by the handle operation (that is, the revolution direction B for sharpening the pencil), as shown in FIG. It is comprised so that it may protrude. In this way, the handle operation for sharpening the pencil is realized by configuring the spiral blade 43 so that the blade edge 43a projects in the direction opposite to the direction B in which the pencil is sharpened (that is, the rotation direction C of the rotary blade 40). Thus, the pencil 2 can be drawn into the base end side D.
The usage state of the pencil sharpener 1 having the above-described configuration will be described.

First, the pencil 2 is inserted into the insertion hole 23. At this time, the pinching member 26 provided in the insertion hole 23 is expanded in diameter, and the side surface of the pencil 2 is pinched when the pin is inserted to the end.
In this state, the handle 27 is turned. The pencil 2 held in the holding unit 30 is scraped off by the rotary blade 40 that moves around in a state where the pencil 2 is in contact with the cylindrical member 31 that is reduced in diameter toward the tip. Since the rotary blade 40 engages the pencil with the blade edge 43a and pulls it toward the handle, the pencil 2 is not returned to the insertion hole 23 even if the clamping force in the insertion hole 23 is weak. For this reason, the peripheral side surface of the pencil can be kept in contact with the reduced diameter portion 31 a of the cylindrical member 31.

In a state where the pencil 2 is kept in contact with the reduced diameter portion 31a, the columnar rotary blade 40 having an inclined state similar to the reduced diameter portion 31a engages the cutting edge 42a of the spiral blade 43 with the peripheral side surface of the pencil 2. Since it moves while being stopped, the peripheral side surface of the tip of the pencil is shaved into a weight according to the movement, and the tip can be sharpened.
In particular, the holding portion 30 is disposed with its axial center positioned at the center of the rotating disk 32 rotated by the handle 27, and the rotating blade 40 is rotatably attached to the eccentric position of the rotating disk 32. In the pencil sharpener 1 structured to move around the holding unit 30 by the planetary gear 42, when the rotary blade revolves around the pencil while rotating by the handle operation, the pencil is at the base end. Since it is drawn into the side D, it is possible to prevent the rotary blade 40 from spinning around without providing a special mechanism for fixing the pencil.

In the pencil sharpener 1 according to the present embodiment, the insertion member 23 of the pencil 2 is provided with the holding member 26 biased in the diameter reducing direction, and the handle 27 can be rotated only in the cutting direction. It is possible to prevent the pencil from spinning more reliably.
Since these cutting mechanisms 28 for sharpening the pencil 2 are provided inside the container member 10 sealed by the lid member 20, the shavings generated by the cutting of the pencil 2 are surely prevented from spilling. Be contained. In addition, since most of the container member can be used as a storage area, a large amount of shavings can be stored. For this reason, it is not necessary to throw away shavings frequently.

When discarding the chips accumulated in the container member 10, the locking state in the locking portion 12 is released and the lid member 20 is removed. In this case, in order to prevent the hand from touching the cutting mechanism 28. A safety cover may be provided.
In the pencil sharpener according to the present embodiment, the structure for the lid member 20 to seal the container member 10 is an airtight rubber member, a screw-type sealing means such as a bottle cap, or the like. Any type of sealing means can be employed.

Further, like the lid member 20 ′ of the pencil sharpener 1 ′ shown in FIG. 6, the container member 10 may be fitted like a tea tube lid. In this way, by designing the side surface portion of the container member and the side surface portion of the lid member to be substantially flush with each other, it is possible to configure a pencil sharpener that has a high capacity for holding shavings despite being slim.
You may make the side surface of a container member into a bellows shape. Thus, by making the side surface of the container member extendable and retractable, the container member can be extended as the shavings accumulate, and the capacity for storing the shavings can be further increased.

Further, as in the pencil sharpener 1 ″ shown in FIG. 7, a chuck member 60 may be provided on the lid member 20 ″.
In this case, as shown in FIG. 8, the chuck member 60 has a structure in which a frame body 62 that rotates around a pencil is provided in the chuck housing 61, and is inserted into the pencil insertion hole 63 by the rotation of the frame body 62. It can be designed to hold a pencil that has been cut.
That is, the chuck housing 61 is composed of a front surface member 61a and a back surface member 61b. A pencil insertion hole 63 is provided at the center of the front surface member 61a, and an operation portion 64 for performing a chuck operation is fixed to the upper end portion of the back surface member 61b.
A similar operation unit 65 is also provided at the upper end portion of the frame body 62, and the holding of the pencil is released by bringing the two

operation units

64 and 65 close to each other.

A curved spring 66 is provided between the frame 62 and the chuck housing 61 and is biased in a direction in which the two

operation portions

64 and 65 are separated from each other. By operating, the frame 62 rotates. A hole through which the pencil 2 is inserted is formed at the center of the frame body 62, and a clamping member 67 including three swing pieces is attached around the hole.
The clamping member 67 is configured such that the three oscillating pieces are oscillated by the rotation of the frame body 62, and the tip portions thereof are moved in the diameter reducing direction so as to clamp the pencil.
The chuck member 60 is attached to one side surface 22 ″ of the lid member 20 ″ in a state where the pencil insertion hole 63 of the chuck housing 61 is communicated with the insertion hole 23 ″ of the lid member 20 ″.

At this time, the chuck member 60 is attached to the lid member 20 ″ via the drawing member 68, and the drawing member 68 is provided on the lid member 20 ″ via the spring 69, so that the chuck member 60 holds the pencil. Thus, it can be configured to be biased toward the rotary blade 40 side.
By comprising in this way, a pencil can be strongly pressed on the handle | steering-wheel side, and it becomes possible to sharpen a tip more sharply.

FIG. 9 shows a pencil sharpener 100 according to the second embodiment of the present invention.
This pencil sharpener 100 seals a container member 110 with a lid member 120 and accommodates shavings under a negative pressure. The pencil sharpener 1 according to the first embodiment is characterized in that a sealing means is provided in the insertion hole (123) of the pencil, a rubber packing is provided in the lid member 120, and the airtightness is improved, and the container member 110. The difference is that a pressure reducing mechanism for lowering the atmospheric pressure is provided, and the others are substantially the same.
Hereinafter, the same reference numerals are given to members having the same configuration as in the first embodiment, and the description thereof will be omitted.

As shown in FIG. 10, the opening 111 of the container member 110 is designed according to the shape of the opening of the lid member 120, and is airtight by the sealing member 121 provided in the opening of the lid member 120. It is sealed. In other words, a recess is provided along the opening edge of the lid member 120 to fit the side wall of the container member 110, and a ring-shaped rubber packing as a sealing member 121 is mounted on the inner wall surface of the recess. Is done.
The lid member 120 is provided with a decompression mechanism for sucking and decompressing the air inside the sealed container member 120.

The decompression mechanism includes a bellows member 160 for storing air and an operation member 170 for expanding and contracting the bellows member 160.
The bellows member 160 is a container whose volume can be increased / decreased by making the peripheral side surface 161 into a bellows shape, and an intake hole 162 communicating with the container member 110 and a locking portion 171 of the operation member 170 are provided on the bottom surface. And a locked portion 163 to be locked.

An exhaust hole 164 is provided on the top surface of the bellows member 160 so as to communicate from the upper surface of the lid member 120 to the outside.
The exhaust hole 164 is formed to be larger than the intake hole 162 and is designed to have an inner diameter such that the inside of the bellows member 160 is maintained at an external pressure when the lid member 120 is removed from the container member 110.
An operation member 170 for expanding and contracting the bellows member 160 is rotatably attached to the lid member 120.

The operation member 170 is a long lever member, and the bottom surface portion of the bellows member 160 can be lifted at the other end portion by operating the bellows member 160 in the direction in which the bellows member 160 is compressed at one end portion. As a result, the bellows member 160 is compressed, and the internal air is discharged to the outside via the exhaust hole 164, and at the same time, the air inside the container member 110 is sucked via the intake hole 162.
The size and number of the intake holes 162 and the exhaust holes 164 are appropriately designed so that the bellows member 160 is effectively compressed.
In the present embodiment, one end portion is exposed on the upper surface portion of the lid member 120 to form the operation portion 172, and the operation portion 172 is rotated upward, whereby the other end locking portion 171 is moved to the bellows member 160. It is designed to be locked to the bottom.

By operating the operating portion 172 from the state where the locking portion 171 is locked to the bottom surface portion of the bellows member 1, the bottom portion of the bellows member 160 is lifted toward the lid member 120, and the peripheral side surface 161 is compressed. The As a result, the air inside the container member 110 is sucked into the bellows member 160 through the suction hole 162 on the bottom surface. The sucked air is discharged to the outside through the exhaust hole 164 that continues to the upper surface portion of the lid member 120.
By plugging the exhaust hole 164 with the air inside the bellows member 160 completely exhausted, the inside of the container member 110 is in a negative pressure state. At this time, the engagement between the locking portion 171 of the operation member 170 and the locked portion 163 of the bellows member 160 is released, and the bellows member 160 can be compressed.

Below the lid member 120, a cutting mechanism 28 for sharpening a pencil is disposed at a position where interference with the bellows member 160 is avoided.
The pencil cutting mechanism 28 includes a holding unit 30 for holding a pencil, a rotary blade 40 that sharpens the held pencil, and a cylinder 50 that rotatably holds the rotary blade 40. That is, an insertion hole 123 for inserting a pencil is provided in one side portion 122 of the lid member 120, and the holding portion 30 for holding the pencil is coaxial with the insertion hole 123, and the held pencil A rotary blade 40 for scraping off and a cylinder 50 for rotatably holding the rotary blade 40 are disposed.

The pencil insertion hole 123 is provided with a sealing means for bringing the container member 110 into an airtight state.
That is, the pinching member 126 provided for fixing the pencil is made of an elastically deformable member so that it can also be used as a sealing plug, opened by inserting the pencil, and sealed when pulled out. I have to. In order to ensure airtightness, a sealing plug as a separate member may be provided in the insertion hole 123.
On the other side portion 124 of the lid member 120, a handle 27 for moving around the pencil while rotating the rotary blade 40 is disposed.

The usage state of the pencil sharpener 100 having the above configuration will be described below with reference to FIG.
First, the lid member 120 is assembled to the container member 110, and the inside of the container is brought into a negative pressure state. In the initial state shown in FIG. 10A, the exhaust hole 164 is open, and the locking portion 171 of the operation member 170 is engaged with the bottom portion of the bellows member 160. The peripheral side surface 161 of the bellows member 160 is stretched and air is in the interior.
From this state, as shown in FIG. 10B, the operation member 170 is operated in a direction in which the bellows member 160 is compressed.

Then, the air inside the bellows member 160 is exhausted from the exhaust hole 164 provided on the top surface, and at the same time, the air in the container member 110 is sucked from the suction hole 162 on the bottom surface portion to the outside of the bellows member 160. And let it drain. As a result, the air pressure inside the container member 110 decreases. In this state, the exhaust hole 164 is plugged 165 so that the container member 120 is sealed.
Since the inside of the container member 110 is sealed in a negative pressure state, the lid member 120 is not easily detached from the container member 110. Thereby, when carrying the pencil sharpener 100, shavings can be prevented from falling down.

When sharpening a pencil, the pencil is inserted into the insertion hole 123. At this time, the pencil is inserted so as to be pushed in from the center of the holding member 26, so that air does not leak from the insertion hole 123 and is sealed. The diameter of the opening can be increased. And it fixes in the state which the side of the pencil 2 was clamped.
In this state, the handle 27 is turned to sharpen the pencil.

When shavings accumulate in the container member 110, the plug 172 of the discharge hole 164 to the bellows member 160 is removed, and the operation member 170 is operated in a direction in which the bellows member 160 is extended. Thereby, the negative pressure state inside the container member 110 is released, and the lid member 120 can be easily removed.
According to the pencil sharpener 100 according to the present embodiment, since the container member 110 for storing the shavings and the lid member 120 are difficult to come off, the shavings can be more effectively prevented from spilling down.

In the pencil sharpener 100 of the present embodiment, the pressure reducing mechanism is provided on the lid member 120, but it may be provided on the side surface portion of the container member 110 or on the bottom surface portion.
The configuration of the decompression mechanism may be anything as long as the air inside the container member 110 can be sucked, and may be, for example, a dropper-shaped decompression pump that is inserted into the insertion hole 123 of the pencil to remove the air. .
Or an air hole may be provided in the side part and bottom face part of the container member 110, and an air intake device may be provided there.

Further, like the pencil sharpener 100 ′ shown in FIG. 11, an operation member 170 ′ for expanding and contracting the bellows member 160 ′ may be provided on the bottom surface portion of the container member 110.
By operating the operation member 170 ′, the bellows member 160 ′ is expanded and contracted, and the air in the container member 120 can be introduced through the intake hole 162 ′ and discharged to the outside through the exhaust hole 164 ′.

The operation member for expanding and contracting the bellows member 160 may have any configuration, for example, a spring mechanism between the bottom surface portion of the container member 110 and the top surface portion of the bellows member 260, as in the operation member 270 shown in FIG. May be provided.
In this case, for example, it is preferable to design so that the bellows member 260 is expanded and contracted by holding the disk-like operation portion 272 on the bottom surface of the container member 110 and pressing the surface of the container member 110 so that the state is maintained.

That is, as shown in FIG. 13, a cylindrical shaft portion 273 is provided on the back surface of the operation portion 272, and a projection portion 274 is provided on the upper end along the outer peripheral surface. The shaft portion 273 presses the cylindrical protrusion 275 provided on the bellows member 260 via the spring 271.
In the initial state shown in FIG. 13A, the operation portion 272 is separated from the bottom surface portion of the container member 110, and the inside of the bellows member 260 is maintained at atmospheric pressure.

By pressing the operation part 272, the bellows member 260 is compressed while the spring 271 is compressed. As a result, the air inside the container member 110 is sucked through the intake hole 262 and discharged to the outside through the exhaust hole 264 provided at the bottom.
The suction hole 262 is provided in a side surface portion of the bellows member 260, and is designed to be long in the lateral direction, so that it is automatically sealed when the bellows member 260 is compressed.

Engaging portions 276 for engaging the protruding portion 274 at the tip of the shaft portion 273 are provided at equal intervals on the annular end surface portion at the tip of the cylindrical protruding portion 375. As shown in FIG. 14, the engaging portion 276 includes an engaging recess 276a and an inclined portion 276b.
As shown in FIG. 13, a zigzag ring portion 277 is formed coaxially around the cylindrical protrusion 275 on the back surface of the bellows member 260. When the operation portion 272 is pressed, the protrusion 274 moves in the compression direction D and moves on the ring portion 277. As a result, the operation unit 272 rotates (see FIG. 14).

When the pressing force is released, the engaging recess 276a is locked by the urging force F of the spring 271 while moving on the inclined portion 276b. When the container member 110 is in a negative pressure state (that is, when the pencil sharpener is used), the operation unit 272 is flush with the bottom surface of the container member 110.
When returning the inside of the container member 110 to the atmospheric pressure, the operation portion 272 is pressed in the same manner, so that the projection portion 274 moves on the ring portion 277 and releases the engagement with the engagement portion 276. For this reason, decompression and release of decompression can be performed only by pressing operation without turning the disk-shaped operation unit 272.

As another mode of the operation member, for example, as shown in FIG. 15, a cap-like advance / retreat member 370 may be provided on the upper surface of the lid member 120.
On the upper surface of the lid member 120, an opening having a spiral thread groove 371 on the inner peripheral surface is provided, and a screw type advance / retreat member 370 is fitted so as to be screwed onto the lid member 120 to be covered. By turning the advance / retreat member 370, the bellows member 160 advances in the direction D, and the top surface of the bellows member 160 is pressed.

The bottom surface portion of the bellows member 160 is fixed to the container member 110, and the volume is reduced by pressing the top surface portion, and the internal air is pushed out through the discharge hole 164. Along with this, the air in the container member 110 is sucked into the bellows member 160 through the intake hole 162 and discharged to the outside through the discharge hole 164.
For this reason, the inside of the container member 110 is in a negative pressure state, and the lid member 120 is difficult to come off.

The present invention is not stop in office supplies industries to sharpen the writing instrument, or used to sharpen the eye pencil as cosmetics, such as cutting the rod-like member in order to create a wedge, it is used in all industrial fields it can.

DESCRIPTION OF SYMBOLS 1,100 ... Pencil sharpener 2 ...

Pencil

10, 110 ... Container member 11, 111 ... Opening part 12 ... Locking

part

20, 120 ... Cover member 21 ... Cover part 121 ... Sealing

member

22, 122 ... Side edge ( One side)
23, 123 ... insertion holes 24, 124 ... side edge (other side)
25 ... handle mounting hole 26 ... clamping member 27 ... handle 27 ... handle portion 28 ... cutting mechanism 29 ... reverse rotation prevention mechanism 30 ... holding portion 31 ... cylindrical member 32 ... rotating disc 33 ... bracket 40 ... rotating blade 41 ... shaft 42 ... Planetary gear 43 ... Spiral blade 50 ... Cylinder 51 ... Internal gear 60 ... Chuck member 61 ... Chuck housing 62 ... Frame 63 ... Pencil insertion holes 64 and 65 ... Operation part 66 ... Spring 67 ... Holding member 68 ... Pull-out member 69 ...

Spring

160, 260 ...

Bellows member

162, 262 ...

Intake hole

164, 264 ...

Exhaust hole

170, 270, 370 ... Operation member

Claims

A container member (10, 110) having a bottom and no lid and a lid member (20, 120) that covers and seals the opening (11, 111) of the container member (10, 110). Pencil sharpener (1),
An insertion hole (23) for inserting a pencil is provided on one side (22, 122) of the lid member (20, 120),
A holding part (30) for holding the pencil, a rotary blade (40) for shaving the held pencil, and the rotary blade (40) are rotatable below the lid member (20, 120). A holding cylinder (50),
A handle (27) for moving around the pencil while rotating the rotary blade (40) is disposed on the other side (24, 124) of the lid member (20, 120). Pencil sharpener.
2. The pencil sharpener according to claim 1, wherein a sealing means for making the container member (110) airtight is provided in the insertion hole (123).
The pencil sharpener according to claim 1 or 2, further comprising a decompression mechanism for sucking air inside the container member (110) and decompressing the air.
A bellows member (160) having an intake hole (162) communicating with the container member (110) and an exhaust hole (164) for discharging the internal air, and having a variable volume by expanding and contracting a peripheral side surface;
An operation member (170) for expanding and contracting the bellows member (160);
4. The pencil sharpener according to claim 3, wherein the pressure-reducing mechanism is configured by the above.
The operation member (170) is a lever member rotatably attached to the lid member (120). By operating the one end portion in the direction of compressing the bellows member (160), the other end portion The pencil sharpener according to claim 4, characterized in that the bottom part of the bellows member (160) is lifted.
The operation member (270) is a spring mechanism provided between the container member (110) and the top surface portion of the bellows member (260), and by pressing the board surface of the operation portion (272), The pencil sharpener according to claim 4, wherein the volume is reduced by pressing the top surface portion of the bellows member (260).
The operation member (370) is an advance / retreat member that moves in a direction of decreasing the volume of the bellows member (160) by rotating along a screw groove provided on a peripheral side surface. The pencil sharpener according to claim 4.
The rotating blade (40) has a planetary gear (42) meshing with a gear (51) provided on the inner periphery of the cylinder (50) at the base of a cylindrical member provided with a plurality of spiral blades (43) on the peripheral side surface. )
The spiral blade (43) is disposed so that the pencil (2) is locked by the cutting edge (43a) and pulled toward the handle side by turning the handle (27) in the cutting direction. The pencil sharpener according to any one of claims 1 to 7.
The rotary blade (40) is a planetary gear (which meshes with a gear (51) provided on the inner periphery of the cylinder (50) at the base of a cylindrical member provided with a plurality of spiral blades (43) on the peripheral side surface. 42),
The spiral blade (43) is disposed so that the handle (27) is turned in the direction of sharpening so that the pencil (2) is locked by the blade edge (43a) and pulled toward the handle side. The pencil sharpener according to any one of claims 1 to 8, wherein the pencil sharpener is characterized.
The pencil sharpener according to claim 9, wherein the handle (27) is configured to be rotatable only in a cutting direction.
The handle (27) includes a rotating arm connected to the cylinder (50) and a handle (27a) for performing a rotation operation, and the handle (27a) is perpendicular to the extending direction of the rotating arm. The pencil sharpener according to any one of claims 1 to 10, wherein the pencil sharpener is configured to be tiltable between directions.
The pencil sharpener according to any one of claims 1 to 11, wherein a side surface of the container member (10, 110) is configured to be extendable and contractible.