CN212827575U - Pencil sharpener - Google Patents

Abstract

The utility model discloses a pencil sharpener, including the upper portion install the casing of the mechanism of cutting a pencil and the collection bits box of lower part collection by the mechanism of cutting a pencil production scraps, collection bits box includes bottom and week lateral wall, the lower tip of casing is equipped with first step and forms bellied first soil portion, the upper end of week lateral wall is equipped with the second step and forms bellied second soil portion, first soil portion falls on the second step, second soil portion is located the first step, first soil portion and second soil portion hug closely together each other; the lower end of the shell is fixedly connected with the upper end of the chip collecting box in a clamping mode, so that the pencil chips generated by cutting the pencil by the pencil sharpening mechanism are prevented from falling into the outer part of the chip collecting box.

Description

Pencil sharpener

Technical Field

The utility model relates to a penknife for cutting the pencil especially relates to a collection bits box assembly structure of penknife, and collection bits box is in order to collect produced pencil bits behind the pencil that cuts.

Background

The pencil sharpener is used for sharpening common pencils, colored pencils, sketch pencils and the like, and is a common school supply and office supply. The pencil sharpener comprises a shell, a pencil sharpening mechanism, a rocking handle and the like, wherein a pull-out type scrap collecting box is usually arranged at the lower position in the shell and used for collecting sawdust generated by sharpening a pencil.

The prior art documents are searched, such as the linkage switch component of the pencil sharpener and the pencil sharpener of CN 208730669U; a pencil sharpener of CN 205439729U; CN204687681U pencil sharpener with intelligence promoting and entertainment functions; the drawer type chip collecting box comprises a shell, a pencil sharpening mechanism is mounted on the upper portion of the shell and comprises a knife rest, a hob and the like, a containing cavity for drawing the chip collecting box is formed in the lower portion of the shell, and a guide piece and the like for guiding the chip collecting box to move are further arranged in the containing cavity. The chip collecting box is a box body with an upward opening and is used for receiving pen chips falling from the upper part.

The drawing type scrap collecting box is placed in or drawn out of the shell of the pencil sharpener, so that the pencil sharpener is convenient to operate; however, the chip collecting box needs to be drawn and moved on the housing, so that a certain moving gap is required between the chip collecting box and the housing, and the existence of the moving gap causes the following problems:

the cutting mechanism on the upper part of the shell cuts pencil scraps (pencil lead powder and wood dust) which enter the outer shell of the scrap collecting box through the movable gap; that is, the pencil scraps do not necessarily fall into the scrap collecting box below, and a part of pencil scraps enter the shell outside the scrap collecting box. When the chip collecting box is pulled out of the shell, pen chips outside the chip collecting box can fall into a learning or working environment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a pencil sharpener is provided, the upper portion casing of pencil sharpener and the collection bits box of lower part pass through the block mode hookup to avoid the pencil bits to fall into the outside of collection bits box.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: pencil sharpener installs the casing and the lower part of cutting the mechanism and collects the collection bits box that produces the pencil bits by cutting the mechanism and cutting the pencil including upper portion, collection bits box include bottom and week lateral wall, the lower tip of casing be equipped with first step and form bellied first portion of bordering on, the upper end of week lateral wall be equipped with the second step and form bellied second portion of bordering on, first portion of bordering on fall on the second step, the second portion of bordering on be located first step on, first portion of bordering on hug closely mutually with second portion of bordering on together.

The utility model discloses further preferred technical scheme does: and the clinging surfaces of the first and second adjacent parts are provided with clamping structures.

The utility model discloses further preferred technical scheme does: the clamping structure comprises at least one pair of convex pieces and concave parts, and the convex pieces and the concave parts are respectively arranged on the first border part or the second border part.

The utility model discloses further preferred technical scheme does: the first bordering part is positioned at the inner side of the first step, and the second bordering part is positioned at the outer side of the second step; or the first bordering part is positioned at the outer side of the first step, and the second bordering part is positioned at the inner side of the second step.

The utility model discloses further preferred technical scheme does: after the chip collecting box is connected with the shell, the outer surface of the chip collecting box and the outer surface of the shell are in smooth transition, so that the chip collecting box and the shell form an integral pencil sharpener shell.

The utility model discloses further preferred technical scheme does: the thickness of the peripheral side wall is equivalent to that of the shell.

The utility model discloses further preferred technical scheme does: the upper surface of the shell is a plane and is provided with a vertical pen feeding hole.

The utility model discloses further preferred technical scheme does: the pencil sharpener is of a cylindrical structure as a whole.

The utility model discloses further preferred technical scheme does: the cross section of the pencil sharpener is circular or elliptical-like.

The utility model discloses further preferred technical scheme does: the pencil sharpening mechanism is driven manually or electrically.

Compared with the prior art, the utility model has the advantages that the scrap collecting box on the pencil sharpener comprises a bottom and a peripheral side wall, a first step is arranged at the lower end of the shell of the pencil sharpener and forms a raised first soil-receiving part, a second step is arranged at the upper end of the peripheral side wall and forms a raised second soil-receiving part, the first soil-receiving part falls on the second step, the second soil-receiving part is positioned on the first step, and the first soil-receiving part and the second soil-receiving part are mutually clung together; the lower end of the shell is fixedly connected with the upper end of the chip collecting box in a clamping mode, so that the pencil chips generated by cutting the pencil by the pencil sharpening mechanism are prevented from falling into the outer part of the chip collecting box.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

FIG. 1 is a schematic view of an overall structure of an electric pencil sharpener;

FIG. 2 is a schematic view of the overall structure of the electric pencil sharpener;

FIG. 3 is a schematic view of the overall structure of the electric pencil sharpener;

FIG. 4 is a first schematic view of the internal structure of the electric pencil sharpener;

FIG. 5 is a first cross-sectional view of the electric pencil sharpener;

FIG. 6 is a schematic view of the internal structure of the electric pencil sharpener;

FIG. 7 is an exploded view of the electric pencil sharpener;

FIG. 8 is an enlarged view taken at A in FIG. 5;

fig. 9 is an enlarged view at B in fig. 6;

FIG. 10 is a second cross-sectional view of the electric pencil sharpener;

fig. 11 is an enlarged view at C in fig. 10;

FIG. 12 is a schematic view of a first bordering portion and a second bordering portion;

FIG. 13 is a schematic structural diagram of a trigger switch and a front panel;

FIG. 14 is a first schematic view of the adjustment panel, the frame and the housing;

fig. 15 is a second schematic view of the adjustment panel, the frame and the housing.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the invention.

It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

The pencil sharpener of the present embodiment may be of a manual type or an electric type, and the electric pencil sharpener will be described in detail below as an example.

In the pencil sharpener of the embodiment, the pencil feeding hole and the pencil feeding channel 101 communicated with the pencil feeding hole can be vertically arranged or horizontally arranged; namely, the pencil can be inserted vertically downwards or horizontally in actual use. The pen feeding method will be described in detail below by taking a vertical pen feeding mode as an example.

As shown in fig. 1 to 3 and 7, the electric pencil sharpener 100 includes a housing 10, a trigger switch 20 and an electric pencil sharpening mechanism 30, the housing 10 and the electric pencil sharpening mechanism 30 are provided with a pencil feeding channel 101, the trigger switch 20 and the electric pencil sharpening mechanism 30 are located in the housing 10, the pencil feeding channel 101 includes a vertical pencil feeding hole b1 arranged on a front panel 10b of the housing 10, the trigger switch 20 is located beside the pencil feeding channel 101, and the trigger switch 20 is triggered by insertion of a pencil to drive the electric pencil sharpening mechanism 30 to operate.

It should be noted that the electric pencil sharpening mechanism 30 is provided with a pencil feeding channel 101, the front panel 10b is provided with a vertical pencil feeding hole b1, and a pencil is inserted from the vertical pencil feeding hole b1 and then passes through the pencil feeding channel 101, so that the electric pencil sharpening mechanism 30 cuts the pencil.

As shown in fig. 1 to 3, the electric pencil sharpener 100 further comprises an adjustment panel 40 having a plurality of pencil insertion holes 41, the adjustment panel 40 being located at the front side of the front panel 10b, and moving the adjustment panel 40 to align a selected pencil insertion hole 41 of the adjustment panel 40 with the vertical pencil feeding hole b1 of the front panel 10 b.

As shown in fig. 14 and 15, it should be noted that, for the connection relationship between the adjusting panel 40 and the front panel 10b, a frame 11 is disposed at the front side of the front panel 10b and can accommodate the adjusting panel 40, the frame 11 limits the adjusting panel 40 from disengaging, and the adjusting panel 40 can move in the frame 11, and different positions of the adjusting panel 40 in the frame 11 can be adjusted, and one of the pen insertion holes 41 can be selected to correspond to the pen inlet hole b 1.

The frame 11 includes an annular member 11d bent inward, and an annular notch h is formed between the annular member 11d and the front panel 10b, and at least a part of the outer edge of the adjustment panel 40 is located in the annular notch h.

The upper surface of the adjustment panel 40 is flush with the upper surface of the bezel 11. So as to ensure that the surface formed by the adjusting panel 40 and the frame 11 is smooth and coherent, and has more integrity.

The trigger switch 20 is a contact type trigger switch or a non-contact type trigger switch. For a touch trigger switch, the specific scheme is as follows: as shown in fig. 5, 6, 8, 9 and 13, the trigger switch 20 includes a movable trigger 21 and a switch 22; when the movable trigger piece 21 touches the switch 22, the electric pencil sharpening mechanism 30 is started; when the movable trigger 21 leaves the switch 22, the electric pencil sharpening mechanism 30 is turned off. In actual operation, a pencil is inserted into the pencil feeding channel 101, the outer wall of the pencil is touched to displace the movable trigger 21 slightly to touch the switch 22, and then the electric pencil sharpening mechanism 30 is started to sharpen the pencil.

The trigger switch 20 is movable, and the position of the trigger switch 20 is adjusted so that the outer walls of pencils with different outer diameters touch the trigger switch 20.

More specifically, the cutting trigger system in this case includes a switch base 23 for mounting the trigger switch 20, a front panel 10b having a pen inlet hole b1, and an adjustment panel 40 having a pen insertion hole 41 with a different caliber, wherein the switch base 23 is located on the inner side of the front panel 10b, and the adjustment panel 40 is movably located on the outer side of the front panel 10 b.

When the adjusting panel 40 moves to align the selected pen inserting hole 41 into the pen channel 101, the position of the switch seat 23 is adaptively adjusted to enable the outer wall of the pencil with different outer diameter to trigger the trigger switch 20. The calibers of the pencil insertion holes 41 are different, so that a user can conveniently cut pencils with different thicknesses.

As shown in fig. 13 and 15, what needs to be further expanded for the adaptive adjustment of the position of the switch seat 23 is that an adjusting piece c1 is fixedly arranged on the switch seat 23, a waist-shaped adjusting hole c2 is arranged on the front panel 10b, a curved sliding chute c3 is arranged on the adjusting panel 40, the adjusting piece c1 penetrates through the waist-shaped adjusting hole c2 and extends into the curved sliding chute c3, and the switch seat 23 moves to different positions of the waist-shaped adjusting hole c2 along with the adjusting panel 40.

In the practical application process, three pen inserting holes 41 with different outer diameters are formed and are positioned on the same straight line; correspondingly, the curved sliding groove c3 comprises three groove positions which are not on the same straight line, and the adjusting piece c1 penetrates through the waist-shaped adjusting hole c2 and extends into the curved sliding groove c 3. The adjusting panel 40 slides to make the curved sliding groove c3 push the adjusting piece c1 to move slightly, and then the position of the switch seat 23 is properly adjusted, so that the outer walls of pencils with different outer diameters can trigger the trigger switch 20 to cut the pencils. The touch here can be either a physical touch or an inductive touch.

As shown in fig. 8, 9 and 13, the front end of the movable trigger 21 is provided with an arc contact surface 21s fitting the outer wall of the pencil. The arc contact surface 21s is adapted to the outer wall of the pencil so that the pencil can more fully touch the movable trigger 21.

For a non-contact trigger switch, the trigger switch 20 includes a sensing component for sensing insertion of a pencil, and converting or transmitting a signal of pencil insertion to drive the motor 30b, which in turn causes the sharpening mechanism 30a to sharpen the pencil. Specifically, the sensing assembly includes a sensor that receives an insertion signal of the pencil and a sensor that converts and outputs the insertion signal to control the motor 30b to be activated. In this case, the sensor is preferably an infrared sensor or a distance sensor.

The electric pencil sharpening mechanism 30 includes a motor 30b and a pencil sharpening mechanism 30a driven by the motor 30 b. Preferably, a decelerator 30d is connected to the motor 30 b.

The pencil sharpening mechanism 30a comprises a gear ring seat a1, a tool rest a2 and a hob a3, wherein the hob a3 is connected to the tool rest a2 in a shaft mode, one end of the hob a3 is meshed with internal teeth in the gear ring seat a1, and the motor 30b is connected with the tool rest a2 through a speed reducer 30d and a gear assembly 30 c. The motor 30b drives the sharpening mechanism 30a through a gear assembly 30 c. The presence of the speed reducer 30d enables the rotation speed of the motor 20b and the rotation speed of the tool head a2 to be matched with each other. The tool rest a2 is provided with a pencil feeding channel 101, and after a pencil is inserted into the pencil feeding channel 101 on the tool rest a2, the hob a3 cuts the pencil.

A guide assembly b2 is provided between the adjustment panel 40 and the front panel 10b to move the adjustment panel 40 on the front panel 10b in a predetermined direction. The guide member b2 includes a first linear rib provided on the adjustment panel 40 and a second linear rib provided on the front panel 10b, and the first linear rib and the second linear rib abut against each other to guide the adjustment panel 40 to move on the front panel 10b according to a predetermined path.

A positioning assembly b3 is provided between the adjustment panel 40 and the front panel 10b to position and align the selected pen insertion hole 41 with the vertical pen feeding hole b 1. The positioning member b3 includes an elastic protrusion 01 of the outer surface of the front panel 10b and a recess 02 of the inner surface of the adjustment panel 40.

Preferably, the inner surface of the adjustment panel 40 is formed with three recesses 02 and is aligned in a straight line so as to correspond to the three pen insertion holes 41 with different diameters. In the first state, the elastic protrusion 01 with certain elasticity is embedded in the recess 02 of the surface to limit and fix the adjusting panel 10 and the front panel 10 b. When the user moves the adjustment panel 40, a downward and forward force is applied to it to compress the elastic protrusion 01 into the other recess 02.

A dust collecting box 50 is detachably connected to the lower part of the housing 10, the dust collecting box 50 includes a bottom 51 and a peripheral wall 52, and the peripheral wall 52 is engaged with the lower end of the housing 10.

The specific structure of the peripheral side wall 52 of the chip collecting box 50 engaging with the lower end of the housing 10 needs to be further described: as shown in fig. 10 to 12, the lower end of the casing 10 is provided with a first step f1 and forms a first protruding border portion g1, the upper end of the peripheral side wall 52 is provided with a second step f2 and forms a second protruding border portion g2, the first border portion g1 falls on the second step f2, the second border portion g2 is located on the first step f1, and the first border portion g1 and the second border portion g2 are tightly attached to each other.

The engaging structure 60 is provided on the close contact surface between the first neighboring portion g1 and the second neighboring portion g 2.

The engaging structure 60 includes at least one pair of a projection 61 and a depression 62, and the projection 61 and the depression 62 are each disposed on the first bordered portion g1 or the second bordered portion g2, respectively.

The first border g1 is located inside the first step f1, and the second border g2 is located outside the second step f 2; or the first border g1 is located outside the first step f1 and the second border g2 is located inside the second step f 2.

After the chip collecting box 50 is connected with the casing 10, the outer surface of the chip collecting box 50 and the outer surface of the casing 10 are in smooth transition, so that the chip collecting box 50 and the casing 10 form an integral pencil sharpener shell.

The thickness of the peripheral wall 52 is equal to the thickness of the housing 10, so as to ensure that the whole outer surface of the housing of the pencil sharpener is more coherent and tidy, and the appearance of the pencil sharpener is more beautiful.

Preferably, the electric pencil sharpener 100 has an overall cylindrical structure, and the pencil is vertically inserted into the vertical pencil hole b1 of the front panel 10b from the housing 10. The cross section of the electric pencil sharpener 100 is circular or elliptical, i.e., the outer surface of the electric pencil sharpener 100 is smooth and tidy as a whole, and has better integrity and aesthetic appearance.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are conventionally placed when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

It is right above the utility model provides a penknife has carried out detailed introduction, and it is right to have used specific individual example herein the utility model discloses a principle and implementation mode have been elucidated, and the explanation of above embodiment is only used for helping the assistant the utility model discloses and core thought. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (10)

1. Pencil sharpener, its characterized in that includes that upper portion installs the casing and the lower part of cutting a mechanism and collects the collection bits box that produces the pencil bits by cutting a mechanism cutting pencil, collection bits box include bottom and week side wall, the lower tip of casing be equipped with first step and form bellied first portion of bordering on, the upper end of week side wall be equipped with the second step and form bellied second portion of bordering on, first portion of bordering on fall on the second step, second portion of bordering on be located first step on, first portion of bordering on hug closely mutually with second portion of bordering on together.

2. The pencil sharpener of claim 1, wherein the clinging surfaces of the first and second bordering portions are provided with a clamping structure.

3. The sharpener of claim 2 wherein said snap-fit structure comprises at least one pair of a projection and a depression, said projection and depression each being disposed at either the first border or the second border, respectively.

4. The sharpener of claim 1 wherein said first border is located on the inside of the first step and said second border is located on the outside of the second step; or the first bordering part is positioned at the outer side of the first step, and the second bordering part is positioned at the inner side of the second step.

5. The sharpener of claim 1 wherein after said chip collection box is coupled to said housing, the chip collection box is smoothly moved between the outer surface of said chip collection box and the outer surface of said housing so that said chip collection box and said housing form a unitary sharpener housing.

6. The sharpener of claim 1 wherein said peripheral wall has a thickness corresponding to the thickness of the housing.

7. The pencil sharpener of claim 1, wherein said housing has a generally planar upper surface with a vertical pencil feed hole.

8. The sharpener of claim 1 wherein said sharpener is generally cylindrical in configuration.

9. The sharpener of claim 8 wherein the sharpener has a circular or oval-like cross-section.

10. The sharpener of claim 1 wherein said sharpening mechanism is manually or electrically driven.

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