CN209756580U

CN209756580U - Pencil sharpener

Info

Publication number: CN209756580U
Application number: CN201920333253.9U
Authority: CN
Inventors: 孙振东
Original assignee: Ningbo Yi Tian Industrial Design Co Ltd
Current assignee: Ningbo Yi Tian Industrial Design Co Ltd
Priority date: 2019-03-16
Filing date: 2019-03-16
Publication date: 2019-12-10
Anticipated expiration: 2029-03-16

Abstract

The utility model relates to a pencil sharpener, which comprises a shell and a knife rest, wherein the knife rest is provided with a jack and a knife; the outer shell is hollow, the knife rest is arranged in the outer shell, the knife rest can axially move in the outer shell and can rotate relative to the outer shell, a rotary driving structure is arranged between the outer wall of the knife rest and the inner wall of the outer shell, and when the knife rest axially moves relative to the outer shell, the rotary driving structure can enable the knife rest to rotate relative to the outer shell; the shell is provided with a through hole for the head of the knife rest with the insertion hole to pass through, and the shell is also provided with an outlet for discharging pen scraps. The beneficial effects of the utility model reside in that: 1. the pencil sharpener can support a desktop to work, can also work without supporting the desktop, and can be used in different environments. 2. The pencil can be cut by simply pressing the pencil and the knife rest to slide relative to the shell, so that labor and time are saved, and the pencil sharpener is quick and efficient. 3. Compact structure, small in size and convenient to carry. 4. Simple structure, low cost and suitability for popularization and application.

Description

Pencil sharpener

Technical Field

The utility model relates to a stationery technical field especially relates to a pencil sharpener.

Background

The pencil sharpener is a pencil sharpening tool, and the existing pencil sharpeners have electric type, hand-operated type, pressing type and the like.

The electrodynamic type is cut a ware and is cut a pencil by the rotatory automation of motor drive cutter, convenient to use, but the useless battery after the electronic ware of cutting uses can the polluted environment, and is not energy-concerving and environment-protective, then can not use when battery electric power is not enough or do not have external power supply, and is unfavorable for improving children's hands-on ability. In addition, the electric pencil sharpener has large volume and is inconvenient to carry.

The hand-operated pencil sharpener manually sharpens a pencil by manual rotation, the hand-operated pencil sharpener needs to put the pencil sharpener on the desktop when using, because there is not the desktop and unable normal use hand-operated pencil sharpener when outdoor sketching or drawing, when the hand-operated pencil sharpener is used on the desktop, the desktop is touched easily to the elbow when the rocking handle, sometimes in order to prevent the elbow from touching the desktop when the rocking handle, often put the pencil sharpener on the table edge, nevertheless can lead to the pencil sharpener unstable, the easy off-centre of pencil utensil, easily cause disconnected core phenomenon. In addition, the hand-operated pencil sharpener has large volume and is inconvenient to carry.

A push type pencil sharpener, such as that disclosed in patent No. 201810137747. X, includes a cutting assembly and a drive assembly; the cutting assembly includes a housing and a blade; the driving assembly comprises an inner sleeve and an outer sleeve capable of driving the inner sleeve to rotate; a spiral groove is formed in the inner wall of the inner sleeve; the driving rod is arranged on the central axis in the outer sleeve, and the spring, the cap, the stop piece, the rotating wheel and the anti-disengaging piece are sequentially sleeved on the driving rod from top to bottom in a penetrating manner. When the pencil sharpener is used, the pencil sharpener can be used for sharpening a pencil by simply pressing the outer sleeve, so that the pencil sharpener is labor-saving, time-saving, small in size and convenient to carry, but the driving structure inside the pencil sharpener is complex, and the production cost is high.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides a pencil sharpener with simple and compact structure, convenient operation, small volume and convenient carrying.

The technical proposal of the utility model for solving the technical problem is that: a pencil sharpener comprises a shell and a knife rest, wherein the knife rest is provided with a jack for inserting a pencil and a cutter which is positioned below the jack and used for sharpening the pencil;

the housing is hollow, the knife rest is arranged in the housing, the knife rest can axially move in the housing and can also rotate relative to the housing, a rotary driving structure is arranged between the outer wall of the knife rest and the inner wall of the housing, and when the knife rest axially moves relative to the housing, the rotary driving structure can enable the knife rest to rotate relative to the housing;

The shell is provided with a through hole for the head of the tool rest with the insertion hole to pass through, and the shell is also provided with an outlet for discharging pen scraps.

Preferably, the rotary driving structure comprises a spiral groove and a guide protrusion capable of sliding along the spiral groove, one of the inner wall of the housing and the outer wall of the tool holder is provided with the spiral groove, and the other is provided with the guide protrusion. Or the rotary driving structure comprises a spiral protrusion and a guide groove in sliding fit with the spiral protrusion, the spiral protrusion is arranged on one of the inner wall of the shell and the outer wall of the tool rest, and the guide groove is arranged on the other one of the inner wall of the shell and the outer wall of the tool rest.

Preferably, the outer wall of the tool holder is provided with a slip-off prevention step located in the housing and a slip-off prevention member located outside the housing.

Preferably, a cutting hole is formed in the tool rest and located below the insertion hole, at least one inclined mounting surface is arranged on the side wall of the cutting hole, the cutter is mounted on the inclined mounting surface, the cutter is a blade, and a guide groove capable of guiding out pen scraps is formed in the side wall of the cutting hole and located beside the blade.

Preferably, the housing is provided with a containing cavity for containing pen scraps, the outlet is communicated with the containing cavity, and the outlet is detachably covered with a cover body.

Preferably, the bottom of the accommodating cavity can be further provided with a supporting seat, an elastic part is installed in the supporting seat, a push rod is supported above the elastic part, and the upper end of the push rod extends out of the supporting seat and is supported on the bottom of the tool rest.

Preferably, the top of the ejector rod is spherical, and the bottom of the tool rest is provided with a groove matched with the top of the ejector rod.

Preferably, the outlet is arranged at the bottom of the accommodating cavity, and the cover body is detachably connected to the outlet of the shell through a threaded structure, a buckling structure or an L-shaped groove and bump matching structure.

The beneficial effects of the utility model reside in that: 1. the pencil sharpener can support a desktop to work, can also work without supporting the desktop, and can be used in different environments. 2. The pencil can be cut by simply pressing the pencil and the knife rest to slide relative to the shell, so that labor and time are saved, and the pencil sharpener is quick and efficient. 3. Compact structure, small in size and convenient to carry. 4. Simple structure, low cost and suitability for popularization and application.

Drawings

Fig. 1 is a perspective view of the present invention.

fig. 2 is an exploded view of an angle of the present invention.

Fig. 3 is an exploded view of another angle of the present invention.

Fig. 4 is a perspective view of the present invention when not pressed.

Fig. 5 is a cross-sectional view of the present invention when not pressed.

Fig. 6 is a perspective view of the present invention when pressed.

fig. 7 is a sectional view of the present invention when pressed.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

referring to fig. 1-7, a pencil sharpener comprises a shell 1 and a knife rest 2, wherein a jack 3 for inserting a pencil and a cutter which is located below the jack and used for cutting the pencil are arranged in the knife rest 2, a cutting hole is arranged below the jack 3 in the knife rest 2, at least one inclined mounting surface is arranged on the side wall of the cutting hole, the cutter is mounted on the inclined mounting surface and is a blade 4, and a guiding groove 5 capable of guiding pencil chips is arranged beside the blade on the side wall of the cutting hole.

The shell 1 is hollow, the knife rest 2 is arranged in the shell 1, the knife rest can axially move in the shell and can rotate relative to the shell, a through hole 6 for allowing one end of the knife rest 2 with a jack to pass through is formed in the shell 2, a rotary driving structure is further arranged between the inner wall of the knife rest and the outer wall of the shell, and when the knife rest 2 axially moves relative to the shell 1, the rotary driving structure can enable the knife rest 2 to rotate relative to the shell 1. The rotary driving structure comprises a spiral groove 7 and a guide protrusion 8 which can slide along the spiral groove, one of the inner wall of the shell and the outer wall of the tool rest is provided with the spiral groove, and the other is provided with the guide protrusion; or the rotary driving structure comprises a spiral protrusion and a guide groove in sliding fit with the spiral protrusion, the spiral protrusion is arranged on one of the inner wall of the shell and the outer wall of the tool rest, and the guide groove is arranged on the other one of the inner wall of the shell and the outer wall of the tool rest. In this embodiment, spiral groove 7 sets up outside the upper portion of knife rest 2, and guide protrusion 8 sets up the perforation 6 department at shell 1, guide protrusion 8 is the hemisphere, and the structure is more reasonable.

The outer wall of the knife rest 2 is provided with a slip-off stopping step 9 positioned in the shell and a slip-off stopping part positioned outside the shell, the slip-off stopping part can be a slip-off stopping protrusion 10 or a slip-off stopping lock, the slip-off stopping lock can be elastically arranged on the knife rest, when the knife rest 2 moves upwards relative to the shell 1, the slip-off stopping step 9 plays an upper limiting role, the knife rest is prevented from being disengaged upwards from the shell, and when the knife rest 2 moves downwards relative to the shell 1, the slip-off stopping part plays a lower limiting role, and the knife rest is prevented from freely entering the shell.

The pencil sharpener is characterized in that an outlet 12 for discharging pencil scraps is further formed in the shell 1, a containing cavity 11 for containing pencil scraps is formed in the shell 1, the outlet is communicated with the containing cavity, and a cover body 13 is detachably covered on the outlet. The scraps produced by pencil sharpening can be contained in the containing cavity 11 of the shell, and the cover body 13 is opened periodically to pour the scraps out of the outlet 12, so that the pencil sharpener is convenient and sanitary. The outlet 12 is arranged at the bottom of the accommodating cavity 11, and the cover body can be detachably connected to the outlet of the shell through a threaded structure, namely the cover body is screwed on the shell through the threaded structure; the cover body can also be detachably connected to the outlet of the shell through a buckle structure, namely, one of the cover body or the shell is provided with a buckle, the other is provided with a clamping hole, and the cover body is clamped in the clamping hole through the buckle to realize the connection of the cover body and the shell; the cover body can be detachably connected to the outlet of the housing through a structure that the L-shaped groove and the projection are matched, in this embodiment, at least one L-shaped groove 14 is arranged on the inner wall of the opening of the housing, the lower end of the vertical groove of the L-shaped groove is directly connected to the lower end face of the housing and forms an inlet, the upper end of the vertical groove of the L-shaped groove is communicated with one end of the horizontal groove of the L-shaped groove, a projection 15 opposite to the L-shaped groove is arranged on the outer wall of the cover body 13, the projection enters the vertical groove of the L-shaped groove from the inlet of the vertical groove of the L-shaped groove until the projection is located at the upper end of the vertical groove, and then the cover body rotates relative to the housing, so that the projection enters the horizontal groove.

The bottom of the accommodating cavity 11 may further be provided with a supporting seat 16, in this embodiment, the supporting seat is disposed on the cover 13, an elastic member, which may be a spring 17, is installed in the supporting seat, a top rod 18 is supported above the elastic member, and an upper end of the top rod extends out of the supporting seat 16 and is supported on the bottom of the tool rest 2. The upward movement of the supporting ram 18 by the resilient member assists the upward movement of the tool holder 2 back into position relative to the housing 1. The top of the ejector rod 18 is spherical, the bottom of the tool rest 2 is provided with a groove 19 matched with the top of the ejector rod, and the top of the ejector rod 18 is propped against the groove 19 of the tool rest 2, so that the positioning effect is achieved, friction can be reduced, and the tool rest 2 can conveniently rotate relative to the shell 1.

the utility model discloses when using, insert pencil 20 in the jack 3 of knife rest 2, hold the pencil on one hand, shell 1 is held to the other hand, also can directly support shell 1 on the desktop, press down pencil 20 or make pencil and shell be close to each other, the pencil drives knife rest 2 and slides in to the shell, if be provided with the elastic component in the shell, then the elastic component is compressed, thereby guide protrusion 8 moves or guide groove along spiral groove 7 and slides along spiral protrusion and drive knife rest 2 and rotate to shell 1 relatively in the shell gliding, the knife rest drives blade 4 and rotates, the relative shell of pencil is motionless and relative knife rest rotates, can realize the cutting to the pencil, the stroke bits that cut off get into the shell through leading out 5 in holding chamber 11, convenient and sanitary. When the knife rest 2 is pressed to the bottom, the pencil 20 can be lifted or the pencil and the shell can be mutually separated to drive the knife rest 2 to be far away from the shell to return to the original position, if an elastic part is not arranged in the shell, a fastening ring can be generally arranged between the pencil and the knife rest, the fastening ring is a rubber ring, the pencil and the knife rest are tightly matched through the rubber ring, the pencil is not prevented from rotating relative to the knife rest, and the knife rest can be lifted through the pencil to be far away from the shell to return to the original position; if set up the elastic component in the shell, can directly loosen pencil 20, drive the knife rest with the help of the power of the elastic component of compressed and get back to the primary position with automatic keeping away from the shell, and then can cut a pencil next time, laborsaving saving time, high efficiency, compact structure, small in size conveniently carries. The cap body 13 is opened periodically to pour out the pen scraps from the outlet 12, which is convenient and sanitary. The utility model has the advantages of simple structure, it is with low costs, be fit for popularizing and applying.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a pencil sharpener, includes shell and knife rest, its characterized in that: the tool rest is internally provided with a jack for inserting a pencil and a cutter which is positioned below the jack and is used for cutting the pencil;

2. The sharpener of claim 1 wherein: the rotary driving structure comprises a spiral groove and a guide protrusion capable of sliding along the spiral groove, one of the inner wall of the shell and the outer wall of the tool rest is provided with the spiral groove, and the other is provided with the guide protrusion.

3. The sharpener of claim 1 wherein: the rotary driving structure comprises a spiral protrusion and a guide groove in sliding fit with the spiral protrusion, the spiral protrusion is arranged on one of the inner wall of the shell and the outer wall of the tool rest, and the guide groove is arranged on the other one of the inner wall of the shell and the outer wall of the tool rest.

4. the pencil sharpener as claimed in any one of claims 1 ~ 3, wherein a drop ~ off prevention step in the housing and a drop ~ off prevention piece outside the housing are arranged on the outer wall of the pencil sharpener.

5. the pencil sharpener as claimed in any one of claims 1 ~ 3, wherein a cutting hole is formed in the tool rest below the insertion hole, at least one inclined mounting surface is formed in a side wall of the cutting hole, the cutter is mounted on the inclined mounting surface, the cutter is a blade, and a guide groove capable of guiding out pencil chips is formed in the side wall of the cutting hole beside the blade.

6. the pencil sharpener as claimed in any one of claims 1 ~ 3, wherein the housing has a chamber for containing pencil shavings, the outlet is communicated with the chamber, and a cover is detachably arranged on the outlet.

7. The sharpener of claim 6, wherein: the bottom of the accommodating cavity can be further provided with a supporting seat, an elastic piece is installed in the supporting seat, a push rod is supported above the elastic piece, and the upper end of the push rod extends out of the supporting seat and is supported on the bottom of the knife rest.

8. The sharpener of claim 7, wherein: the top of the ejector rod is spherical, and the bottom of the tool rest is provided with a groove matched with the top of the ejector rod.

9. The sharpener of claim 6, wherein: the outlet is arranged at the bottom of the accommodating cavity, and the cover body is detachably connected with the outlet of the shell through a threaded structure or a buckle structure or an L-shaped groove and a lug matching structure.