JPH10305695A - Pencil sharpener - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely regulate a thickness of a pencil after sharpening by a pencil sharpener by a simple structure. SOLUTION: The pencil sharpener comprises a sharpening space 10 having a sharpening cutter 11 for sharpening a pencil P, an arm 20 for introducing or retracting a free end 21 side to or from the space 10, and urging means 30 for always urging the end 21 side from the space 10 in a protruding direction. A plurality of contact surfaces 23 for preventing movement of the pencil P to an innermost side 12 are provided in contact with an end Pa of the pencil P at the arm 20. The sharpener also comprises a presser 40 for bringing the end 21 side of the arm 20 into contact with a moving end by the means 30 to stepwisely move the end 21 and operable to regulate the contact position. Any one of the surfaces 23 of the arm 20 is selectively brought into contact with the end Pa of the pencil P by this regulating operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved pencil sharpener of a type having a cutting space for shaving the tip of the pencil while allowing the pencil to move inward by rotating the inserted pencil. About.

[0002]

2. Description of the Related Art A pencil insertion hole configured to gradually reduce the hole diameter from the pencil insertion opening side toward the inner side, communicates with the insertion hole, and extends along the direction of insertion of the pencil. Conventionally, a pencil sharpener having a slit provided and a cutting blade having a blade portion facing the slit in the longitudinal direction of the slit has been used.

[0003] In such a pencil sharpening, after inserting a pencil into the insertion hole, the pencil is rotated to move the pencil to the inner peripheral side on the peripheral surface of the pencil by a blade portion facing the slit. It is possible to perform gradual cutting while performing.

In this type of pencil sharpening, it is also required to be able to adjust the thickness of the pencil after cutting, and various types of pencil sharpeners having such an adjusting mechanism have been proposed. , Has been used.

[0005]

As a typical example of this type of pencil sharpener provided with the adjusting mechanism, see Japanese Patent Laid-Open No. 2-1257.
There is a pencil sharpener described in Japanese Patent Publication No. 99. In such a pencil sharpener, one of the components of the cutter unit bisected by the slit provided along the insertion hole can be elastically deformed so as to be able to approach / separate from the other of the components. Further, there is provided a pressing means which comes into contact with one of the components so that the elastic deformation of the component can be adjusted, and presses the component. If the elastic deformation amount of one of the constituent materials is increased, the insertion hole is narrowed, and the amount of movement of the pencil accompanying the cutting can be reduced, so that the pencil can be cut relatively thick. In addition, if the amount of elastic deformation of one of the constituent materials is reduced, the insertion hole is widened, and the amount of movement of the pencil accompanying the cutting can be increased, so that the pencil can be sharpened relatively thinly.

However, in such pencil sharpening, the adjustment of the thickness of the pencil is caused by the elastic deformation of one of the components divided by the slit. However, it is difficult to ensure a large amount of approach / separation with respect to the constituent materials described above, and it is difficult to make the thickness of the tip portion of the pencil after cutting significantly different even with the above adjustment. In addition, one of the constituent materials deteriorates with time, and the elastic recovery cannot be sufficiently performed, which may cause a problem that the insertion hole is always narrowed from an intended size. .

Therefore, the present invention solves such disadvantages of the prior art, and furthermore, it is possible to reliably adjust the thickness of a pencil after cutting in this kind of pencil sharpening with a simple structure. The purpose is to do.

[0008]

In order to achieve the above object, according to the present invention, a pencil sharpener is provided with the following constitutions (1) to (6). (1) A cutting space 10 provided with a cutting blade 11 for cutting the pencil P in accordance with a rotation operation of the inserted pencil P in which the tip Pa portion of the pencil P is inserted, and (2) An arm 20 rotatably mounted at the other end 22 so that the free end 21 can be taken in and out;
(3) biasing means 30 for constantly biasing the arm 20 in a direction to cause the free end 21 side of the arm 20 to escape from the cutting space 10 outward;
(4) The tip Pa of the pencil P inserted into the cutting space 10 in a state where the free end 21 side of the arm 20 is inserted into the cutting space 10 on the arm 20.
And a plurality of abutting surfaces 23 that are in contact with each other to prevent the pencil P from moving toward the inner back side 12 are formed between the free end 21 of the arm 20 and the rotation center 22a at different positions. (5) The free end 21 side of the arm 20 is set in the cutting space 10 against the urging of the urging means 30.
The arm 20 is brought into contact with the arm 20 at the movement destination side 24 by the urging means 30 so that the arm 20 is moved stepwise toward the inside or to the outside of the cutting space 10 by the urging by the urging means 30. And a pressing body 40 capable of adjusting the contact position. (6) The arm 2 is moved by the pressing body 40 in a stepwise manner.
0 with the free end 21 side inserted into the cutting space 10, one of the plurality of contact surfaces 23, 23... Is attached to the tip Pa of the pencil P inserted into the cutting space 10. Selectively abut;

According to the above configurations (1) to (6), the free end 21 side of the arm 20 is adjusted to the cutting space 10 by adjusting the contact position between the pressing body 40 and the arm 20. Move it in the direction to enter,
It can be moved in the direction to get out.

The free end 21 of the arm 20 can be completely pulled out of the cutting space 10 by adjusting the contact position. When the free end 21 of the arm 20 is completely pulled out of the cutting space 10, the movement of the pencil P inserted into the cutting space 10 toward the inner back side 12 due to the cutting operation by the rotation operation is the same as the above. Without being blocked by the contact surface 23,
In this case, the pencil P can be moved to the innermost side 12 the most along with the cutting, so that the pencil P
Can be cut most thinly at the tip Pa portion.
(Fig. 3)

The free end 21 of the arm 20 is inserted into the cutting space 10 so that the contact surface 2
3 can be brought into contact with the tip Pa of the pencil P inserted into the cutting space 10 so as to prevent the movement of the pencil P accompanying the cutting at a certain position, and after the tip Pa of the pencil P is cut. Can be kept constant. (FIGS. 4 and 5) As described above, the movement of the pencil P due to the cutting is prevented by bringing the contact surface 23 into contact with the tip Pa of the pencil P. As a result, the tip of the core that needs cutting is rounded. Or, it is possible to perform cutting to lengthen the core while leaving the rounded tip of the core or the flattened form in the flattened pencil P. In particular, a colored pencil P having a low hardness of the core, etc. Appropriate cutting can be performed on the pencil P.

The contact surface 23 is provided on the arm 2
., Are formed between the free end 21 and the rotation center 22a at different positions, and one of the plurality of contact surfaces 23, 23.
Of the pencil P by the stepwise movement of the arm 20
Can be selectively brought into contact with the tip Pa of the pencil P, so that the contact surface 23 that is brought into contact with the tip Pa of the pencil P
Is a contact surface 23 on the free end 21 side of the arm 20 to reduce the movement of the pencil P due to the cutting, and to make contact with the tip Pa of the pencil P By setting 23 as the contact surface 23 on the rotation center 22a side of the arm 20, the movement of the pencil P associated with the cutting can be increased. By increasing the movement of the pencil P associated with the cutting, the pencil P can be made thinner, and by reducing the movement accompanying the cutting, the pencil P can be cut thicker. (FIGS. 4 and 5)

The bias of the arm 20 is, for example,
One end of a torsion coil spring wound around a shaft on which the arm 20 is rotatably assembled is fixed to the arm 20 and the other end of the spring is fixed to a mounting base material of the arm 20, or An elastic piece is provided integrally with a side portion of the arm 20 facing the mounting base material so as to elastically abut the distal end side against the mounting base material surface and bias the arm 20 away from the surface. Can be secured.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One of the typical embodiments of the present invention shown in FIGS. 1 to 6 will be described below.

FIG. 1 is an exploded perspective view of each part of the pencil sharpener for easy understanding of the overall configuration of the pencil sharpener according to the embodiment. FIG. 2 is a perspective view of a sharpening portion S which forms the cutting space 10 from the inner rear side 12 of the cutting space 10 so that the state in which the free end 21 of the arm 20 enters the cutting space 10 can be easily understood. And a part of the arm 20 is shown in a perspective view.

FIGS. 3 to 6 show the main part of the pencil sharpening in a vertical section. Specifically, FIG. 3 shows that the free end 2 of the arm 20 is located at the maximum cutting position Mx.
FIG. 4 shows a state in which the arm 20 is located at the intermediate cutting position N.
5 and 6 show a state where the free end 21 of the arm 20 is located at the minimum cutting position Mi. (In FIG. 3 to FIG. 5, the tip Pa portion of the pencil P on the lower side of each drawing so that the shape of the tip Pa portion of the pencil P cut at each of these positions Mx, N, and Mi can be easily understood. 6 is also shown.
Shows a vertical section of a main part of pencil sharpening at a position different from that in FIGS. 3 to 5. )

The pencil sharpener according to the present embodiment enables the tip Pa of the pencil P to be inserted, and moves the pencil P into the inner side 12 with the rotation operation of the inserted pencil P.
And a sharpening section S having a cutting space 10 provided with a cutting blade 11 for cutting the tip Pa of the pencil P while moving the pencil P.
It is provided with a mechanism Z for increasing and decreasing the amount of movement of the pencil P toward the inner side 12 within zero. If the amount of movement increases, the tip Pa of the pencil P is narrowed by the cutting, and as the amount of movement decreases, cutting is performed so as not to narrow the end Pa of the pencil P.

The sharpener S and the increase / decrease mechanism Z
Is typically assembled and housed in a suitable case body to form a pencil sharpener. In this embodiment,
The sharpener portion S and the increase / decrease mechanism Z are housed between a pair of facing case constituent plates 100, 100 to form a pencil sharpener. (FIGS. 1, 3 to 6)

(Sharpener S) Sharpener S
Has an insertion opening 13a for a substantially circular pencil P, and an insertion hole 13 for the pencil P, the diameter of which is gradually reduced from the insertion opening 13a side toward the back side, and the opening 13b is also provided on the back side. Further, there is a back side cutting cavity 14 communicating with the opening 13 b on the back side of the insertion hole 13. Also,
A slit 15 is provided along the length of the insertion hole 13 and communicates with the insertion hole 13. The rear end 15 a of the slit 15 is communicated with the rear cutting cavity 14.

The sharpener portion S is provided with a rectangular plate-shaped cutting blade 11 having a blade portion 11a on one side edge extending in the length direction on the outside. The cutting blade 11 is assembled so that the blade 11a protrudes from one edge side of the slit 15 in the longitudinal direction toward the other edge, and the blade 11a extends along the slit 15.
The cutting blade 11 has a length protruding further from the rear end 15a of the slit 15 to the inner side 11b, and the inner surface 11b of the rear end of the cutting blade 11 protruding in this manner. The back side cutting cavity 14 is formed by the side wall 14a facing the space 11b at an interval.

Therefore, according to the sharpener portion S, the insertion opening 13 is inserted into the insertion hole 13.
By inserting the tip Pa portion of the pencil P from a and rotating the pencil P, the pencil P can be sequentially cut by the blade portion 11a of the cutting blade 11, and the insertion is performed along with the cutting. The inner rear side 12 of the hole 13, and further, the rear side cutting cavity 14 communicated with the insertion hole 13.
By gradually moving the pencil P toward the inner back side 12 of the pencil P, the tip P of the pencil P can be cut so as to be gradually thinned.

That is, in this embodiment, the cutting space 10 is constituted by the insertion hole 13 and the rear cutting cavity 14 in the sharpener portion S.

(Increase / decrease mechanism Z) The increase / decrease mechanism Z includes an arm 20 rotatably mounted on one end side, and an arm 20
The urging means 30 for urging the free end 21 side of the arm 20 in one direction and the movement destination side 24 of the arm 20 by the urging of the urging means 30 contact the arm 20. And a pressing body 40.

(Increase / decrease mechanism Z / arm 20) Arm 20
Is a back side cutting cavity 14 of the sharpener S, that is, a back end inner surface 11b and a side wall 14a of the cutting blade 11.
Between the free end 2 which can enter and exit from one side
1 and the other end 22 that is rotatably assembled to the case component plate 100.

A shaft protruding portion 26 protruding from both sides of the arm 20 is provided at the other end 22 on the rotating assembly side. One of the shaft protrusions 26 is provided so as to protrude from a distal end surface of a large-diameter cylindrical portion 26 a protruding from one surface side of the arm 20.

In this embodiment, the other end 22 of the pair of case constituting plates 100, which is the side of the arm 20 to be rotated and assembled, is housed from the inner surface of the case constituting plate 100. The upper end portions 102a of the pair of side plates 102, 102 which are provided in a protruding manner with an interval therebetween and which abut the upper end surfaces 102a when the pair of case constituent plates 100 are combined, respectively,
A shaft recess 102b for forming a shaft hole 103 for accommodating the shaft protrusion 26 of the arm 20 by this butting is provided. The arm 20 is rotatably mounted with the shaft protrusion 26 housed in the shaft hole 103 configured as described above.

The arm 20 is provided with an urging means 3 described later.
0, the free end 21 is always urged in a direction to escape from the cutting space 10.

The arm 20 has a pencil P inserted into the cutting space 10 with the free end 21 of the arm 20 inserted into the cutting space 10.
In contact with the front end Pa of the pencil P
Abutment surfaces 23 are formed to prevent the movement of the abutment.

The two contact surfaces 23 are located between the free end 21 of the arm 20 and the center of rotation 22a, that is,
The arm 20 is provided at different positions along the length direction thereof, and is provided so that the surface thereof is along the rotation direction F of the arm 20. In this embodiment, the line L connecting the center of rotation 22a of the arm 20 and the top 21a of the free end 21 is moved by the urging means 30 to the moving side of the arm 20. On the side 25 opposite to 24, a first contact surface 23a is provided. Also, this first contact surface 2
In the present embodiment, a second contact surface 23b is provided on the top 21a of the free end 21 at a position closer to the insertion opening 13a of the pencil P in the cutting space 10 than in the cutting space 3a. In addition, the first contact surface 23a
On the other hand, the second contact surface 23b is located below the line L, so that a step surface 23c is formed between the two contact surfaces 23.

A pressing surface 27 of a pressing body 40 to be described later is provided at a side end of the arm 20 along the length direction of the movement destination side 24 by the urging of the urging means 30. is there. In this embodiment, the pressing surface 27 is divided into three pressing surfaces 27 having different intervals with respect to the line segment L, and each pressing surface 27 rotates the arm 20. It is provided so that the surface may be oriented in a direction perpendicular to the direction F.

In this embodiment, the arm 2
The distance between the first pressing surface 27a located on the side of the rotation center 22a and the line segment L is the largest, and the second pressing between the first pressing surface 27a and the third pressing surface 27c is the largest. The interval between the surface 27b and the line segment L is subsequently large, and the interval between the third pressing surface 27c on the top 21a side of the free end 21 of the arm 20 and the line segment L is minimized. It is composed. Therefore, between each pressing surface 27, a step surface 27d along the rotation direction F of the arm 20 is provided.
Are formed.

In this embodiment, the free end 21 of the arm 20 does not enter the cutting space 10 in a state where a pressing body 40 to be described later comes into contact with the third pressing surface 27c. FIG. 3) Also, such a pressing body 40
When the free end 21 abuts on the second pressing surface 27b, the free end 21 is cut so that the first abutting surface 23a abuts on the tip Pa of the pencil P inserted into the cutting space 10. When the pressing body 40 comes into contact with the first pressing surface 27a and enters the cutting space 10, the tip Pa of the pencil P inserted into the cutting space 10 is brought into contact with the second abutment (FIG. 4). The free end 21 enters the cutting space 10 so that the surface 23b is abutted. (FIGS. 5 and 6)

On the side surface of the arm 20 on the side where the large-diameter cylindrical portion 26a is provided, there is provided a projection 28 for setting an urging means 30 described later.

(Increase / decrease mechanism Z / urging means 30) Urging means 3
Reference numeral 0 denotes a torsion coil spring 31 in which a winding portion 31a is wound around an enlarged diameter cylindrical portion 26a of the arm 20 in this embodiment.

One end of the spring 31 is connected to the arm 20.
The other end of the spring 31 is hooked on the side 25 opposite to the destination side 24 of the arm 20, while the other end of the spring 31 is hooked on the side 25 opposite to the destination side 24 of the arm 20. Plate surface 100a of the case constituting plate 100
Is struck. In this state, the winding portion 31a of the spring 31 is elastically deformed.

Therefore, the spring 31 causes the arm 20 to move the free end 21 away from the case constituting plate 100 against which the other end of the spring 31 is abutted, that is, from the cutting space 10. Free end 2
It is always urged in a direction to allow one side to escape.

(Increase / decrease mechanism Z / pressing body 40) Pressing body 40
Is a rotation center 22a from the free end 21 side of the arm 20.
The arm 20 is attached to the case constituting plate 100 on the movement destination side 24 by the urging of the urging means 30 of the arm 20 so as to be movable toward the side.

That is, in this embodiment, the pressing body 40 is inserted into a slit 101 along the length direction of the arm 20 provided on the case constituting plate 100, and It is configured as a protruding piece 41 protruding inward. The projecting piece 41 has a substantially circular operation head 4 located outside the case constituting plate 100.
2 is provided on the lower surface along the diameter direction of the operation head 42. The slit 101 is provided to be longer than the length of the protruding piece 41. Therefore, a finger or the like is pressed against the operation head 42 so that the operation head 42 faces the length direction of the slit 101. By pressing, the protruding piece 41 can be moved along the slit 101.

The protruding piece 41 also has a protruding portion 43 protruding laterally from the peripheral edge of the operation head 42 at the front and rear ends in the moving direction. In this embodiment, an elastically deformable ring 44 is fitted between the projecting portion 43 of the projecting piece 41 projecting inward from the slit 101 and the inner surface of the case constituting plate 100. Attached to,
Operation head 4 with projection 41 inserted into slit 101
2 does not fall off.

The distal end of the projecting piece 41 of the pressing body 40 thus configured, which is directed toward the rotation center 22a of the arm 20, is connected to each of the pressing surfaces 27 of the arm 20.
And a pressing portion 41a for pressing the arm 20 against the bias of the spring 31.

(Function) From the above configuration, the pencil sharpener according to this embodiment functions as follows.

The third pressing surface of the arm 20 is pressed against the arm 20 urged by the spring 31 in a direction in which the pressing portion 41a of the protruding piece 41 constituting the pressing body 40 comes into contact with the pressing portion 41a. When the arm 20 is in contact with the cutting space 27c, the arm 20 does not allow the free end 21 to enter the cutting space 10. (FIG. 3) Therefore, in this state, the pencil P inserted into the cutting space 10 is not hindered from moving due to the cutting performed by rotating the pencil P, and the tip Pa of the pencil P is most likely to be moved. Can be cut finely. (Maximum cutting position Mx)

Next, the projecting piece 4 constituting the pressing body 40
1 is pressed toward the rotation center 22 a of the arm 20 along the slit 101 by pressing the operation head 42, and the pressing portion 41 a of the projecting piece 41 is moved to the pressing portion 41 a by the spring 31. The third pressing surface 2 of the arm 20 is urged against the arm 20 urged in the abutting direction.
7c and the second pressing surface 27b, the level difference between the third pressing surface 27c and the second pressing surface 27b, the level difference between the third pressing surface 27c and the second pressing surface 27b, The arm 20 is pushed toward the cutting space 10 against the bias of the spring 31. In this state, the arm 20 is inserted into the free space 21 in the cutting space 10.
And the first contact surface 23 is opposed to the tip Pa of the pencil P to be inserted. (FIG. 4) Therefore, in this state, the pencil P inserted into the cutting space 10 is cut by rotating the pencil P at a position where the tip Pa of the pencil P abuts on the first contact surface 23a. , The tip Pa of the pencil P can be cut so as to be thicker than the pencil P cut at the maximum cutting position Mx. (Intermediate cutting position N)

Next, the projecting piece 4 constituting the pressing body 40
1 is further moved toward the rotation center 22a side of the arm 20 along the slit 101 by pressing the operation head 42, and the pressing portion 41a of the protruding piece 41 is With respect to the arm 20 urged in a direction to abut against the first pressing surface 27b of the arm 20, the arm 20 gets over the step surface 27d between the second pressing surface 27b and the first pressing surface 27a and comes into contact with the first pressing surface 27a. The arm 20 is pushed toward the cutting space 10 against the bias of the spring 31 due to the level difference between the second pressing surface 27b and the first pressing surface 27a. In this state, the arm 20 further allows the free end 21 to enter the cutting space 10 and the second contact surface 23
b faces the tip Pa of the pencil P to be inserted.
(FIGS. 5 and 6) Therefore, in this state, the pencil P inserted into the cutting space 10 is rotated at a position where the tip Pa of the pencil P comes into contact with the second contact surface 23b. The movement of the pencil P is prevented from being moved, so that the tip P of the pencil P can be further cut so as to be thicker than the pencil P cut at the intermediate cutting position N. (Minimum cutting position Mi)

That is, in the pencil sharpening according to this embodiment, the maximum cutting position Mx and the intermediate cutting position N
The tip Pa of the pencil P can be cut into three different thicknesses by moving the protruding piece 41 constituting the pressing body 40 to any one of the minimum cutting positions Mi as necessary. .

By setting the number of the contact surfaces 23 to three or more, and correspondingly to the number of the pressing surfaces 27 to four or more, the tip Pa of the pencil P becomes four or more. It can be cut to different thicknesses.

(Other Features) In this embodiment, a step surface 27d between the pressing surfaces 27 is
The arm 20 has an inclined surface K that rises from the free end 21 side to the rotation center 22a side, and the pressing body 4
The inclined surface 41b of the end of the protruding piece 41 which abuts on the stepped surface 27d due to the movement of the protruding piece 41 constituting 0 has an inclined surface 41b opposite to the stepped surface 27d. Passing over the surface 27d is smooth.

The case component plate 100 on the mounting side of the pressing body 40 is provided with a window hole 104 formed to be long in the moving direction of the pressing body 40, The window hole 104 is formed in one side of the ring 44 fitted to the projection 41 constituting the body 40.
Plate portion 44a for closing the inside of the case constituting plate 100
Are provided, and a part of the display plate portion 44a is
b. Then, at the maximum cutting position Mx, the colored portion 44b of the display plate portion 44a appears over the entire window hole, and when the pressing body 40 is moved from the maximum cutting position Mx to the intermediate cutting position N and further to the minimum cutting position Mi. Therefore,
The area of the colored portion 44b that appears in the window hole is reduced. As a result, the user can easily recognize which of the positions the pressing body 40 has been moved to.

[0049]

According to the pencil sharpener of the present invention, the arm 20 is rotatably mounted so that the free end 21 can be inserted into and removed from the cutting space 10 of the pencil P, and the arm 20 is moved from the cutting space 10 to the free end. A biasing means 30 for biasing the arm 21 to escape, and a free end 21 of the arm 20
With a simple structure consisting of three parts with the pressing body 40 whose side is moved stepwise against the bias, the tip Pa of the pencil P can be selectively cut into a plurality of different thicknesses. In addition, there is a feature that such cutting can be reliably performed so as to have a selected thickness.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a pencil sharpener.

FIG. 2 is a perspective view of a main part of a pencil sharpener.

FIG. 3 is a longitudinal sectional view showing a use state of a pencil sharpener and a side view of a tip Pa portion of a pencil P (maximum cutting position Mx).

FIG. 4 is a longitudinal sectional view showing a use state of a pencil sharpener and a side view of a tip Pa portion of a pencil P (intermediate cutting position N).

FIG. 5 is a longitudinal sectional view showing a use state of a pencil sharpener and a side view of a tip Pa portion of a pencil P (minimum cutting position Mi).

FIG. 6 is a longitudinal sectional view showing a use state of a pencil sharpener (minimum cutting position Mi).

[Explanation of symbols]

 P Pencil Pa Tip (of pencil P) 10 Cutting space 11 Cutting blade 12 Inner back side 20 Arm 21 Free end (of arm 20) 22 Other end (of arm 20) 22a Rotation center (of arm 20) 23 Contact surface 23 destination side (of arm 20) 30 biasing means 40 pressing body

Claims (1)

[Claims] 1. A cutting space in which a tip of a pencil is inserted, and a cutting space provided with a cutting blade for cutting the pencil in accordance with a rotating operation of the inserted pencil, and a free end side can be put in and out of the cutting space. And an urging means for constantly urging the arm in a direction in which the free end side of the arm escapes outward from the cutting space. When the free end of the arm is inserted into the cutting space, the arm contacts the tip of a pencil inserted into the cutting space to prevent the pencil from moving inward. A plurality of contact surfaces are formed between the free end and the rotation center of the arm at different positions, and the free end side of the arm is opposed to the urging means. Towards the cutting space, Is brought into contact with the arm on the movement destination side by the urging means so as to move stepwise toward the outside of the cutting space by the urging by the urging means, and adjusts the abutting position. An operable pressing body is provided, and in a state where the arm is steppedly moved by the pressing body so that the free end side enters the cutting space, any one of the plurality of contact surfaces is provided. A pencil sharpener characterized in that one is selectively brought into contact with the tip of a pencil inserted into the cutting space.