CN215552205U

CN215552205U - Changeable pencil sharpening mechanism and pencil sharpener

Info

Publication number: CN215552205U
Application number: CN202121857669.4U
Authority: CN
Inventors: 金响标
Original assignee: Yiwu Dingbang Stationery And Sporting Goods Co ltd
Current assignee: Yiwu Dingbang Stationery And Sporting Goods Co ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2022-01-18
Anticipated expiration: 2031-08-09

Abstract

The utility model discloses a switchable pencil sharpening mechanism and a pencil sharpener, which comprise a bracket and a hob assembly; the hob assembly comprises a hob rest and a hob, and the hob rest is provided with at least two pencil sharpening channels which are suitable for different pencils or different cutting forms; the bracket comprises a first end part and a second end part, and the first end part of the bracket is provided with a pen inlet hole; the tool rest is axially connected between the first end part and the second end part so that the tool rest can swing on the bottom support of the bracket, and the pen inserting hole is matched with different pen cutting channels selectively, so that pens are cut into different shapes or are suitable for pens with different diameters, and the multifunctional pencil sharpener is multifunctional.

Description

Changeable pencil sharpening mechanism and pencil sharpener

Technical Field

The utility model relates to a pencil sharpener, in particular to a pencil sharpening mechanism in the pencil sharpener.

Background

The pencil sharpener can safely and quickly sharpen pencils, and becomes a necessary tool for students to study.

The pencil sharpener comprises a shell, a pencil clamping mechanism and a pencil sharpening mechanism, wherein the pencil sharpening mechanism comprises a runner seat, a cutter frame and a hob; the hob is arranged on the hob head through a pin shaft, the hob is meshed with an inner gear on the runner seat through a gear, the rocker arm drives the hob head and the hob to rotate together, and meanwhile, the hob performs autorotation motion in a gear meshing mode.

A pencil sharpener like CN104773018B and a pencil sharpener with the pencil sharpener.

The existing tool rest is only provided with a conical pen inserting channel, and when the hob rotates, a pencil in the pen inserting channel is cut; the cut pencil has a conical pen point with a certain length, and the conical pen point comprises a conical part on the penholder and a conical pen core at the front end of the conical part.

When the art designer creates, pencils with conical pen cores of different lengths are needed; therefore, the pencil sharpener with different conical pencil insertion channels is required to meet the pencil sharpening requirement.

SUMMERY OF THE UTILITY MODEL

Aiming at the problem that in the prior art, only refills with one length can be cut by one pencil sharpener; the pencil sharpening mechanism is provided with two different pencil sharpening channels, so that the requirements of sharpening two pencils or different sharpening forms are met.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the switchable pencil sharpening mechanism comprises a bracket and a hob assembly;

the hob assembly comprises a hob rest and a hob, and the hob rest is provided with at least two pencil sharpening channels which are suitable for different pencils or different cutting forms;

the bracket comprises a first end part, a second end part and a bottom support, and the first end part of the bracket is provided with a pen inserting hole;

the tool rest is axially connected between the first end part and the second end part so that the tool rest can swing on the bottom support of the bracket, and the pen inserting hole is selectively matched with different pen sharpening channels.

The utility model adopts a further preferable technical scheme for solving the technical problems as follows: the tool rest comprises a first frame end and a second frame end, wherein the first frame end is provided with a first shaft pin, and the second frame end is provided with a second shaft pin;

the first end part is provided with a first pin hole for inserting a first shaft pin, and the second end part is provided with a second pin hole for inserting a second shaft pin;

the length of the tool rest is less than the distance between the first end part and the second end part; so that the blade holder can be moved back and forth in the carriage.

The utility model adopts a further preferable technical scheme for solving the technical problems as follows:

the inner surface of the bottom support close to the second end part is provided with positioning grooves distributed along the length direction of the bottom support;

the bottom surface of the tool rest is provided with a first positioning convex rib and a second positioning convex rib;

when the first frame end of the tool rest abuts against the first end part of the bracket, the tool rest can rotate on the bracket;

when the second frame end of the tool rest moves towards the second end part of the bracket, the positioning convex rib on one tool rest is selected to be matched with the positioning groove of the bottom support so as to ensure that one sharpening channel is aligned with the pen inserting hole.

an operating rod axially penetrates through the second end part of the bracket;

a gear is arranged at the end part of the operating rod, a first arc-shaped groove is arranged at the second frame end, and a tooth structure matched with the gear is arranged in the first arc-shaped groove;

by rotating the lever, the gear wheel moves on the tooth arrangement to effect oscillation of the tool holder.

the first frame end is provided with a third shaft pin, the first end part is provided with a second arc-shaped groove, and the third shaft pin can move in the second arc-shaped groove.

the tool rest is provided with a first pencil sharpening channel and a second pencil sharpening channel which have different lengths;

the first pencil sharpening passage comprises a first inlet, the second pencil sharpening passage comprises a second inlet, and the first inlet and the second inlet are both arranged on the first frame end;

the first pencil sharpening channel and the second pencil sharpening channel are respectively arranged at two sides of the hob;

in the first pencil sharpening mode, the first pencil sharpening channel is aligned with the pencil inserting hole;

and under the second pencil sharpening mode, the second pencil sharpening channel is aligned with the pencil inserting hole.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the switchable pencil sharpening mechanism comprises a bracket and a hob assembly with double pencil sharpening channels;

the hob assembly comprises a tool rest and a hob;

the bracket comprises a first end part, a second end part and a bottom support, wherein the first end part of the bracket is provided with a pen inserting hole selectively matched with the double-sharpening channel;

the tool rest comprises a first frame end and a second frame end, wherein the first frame end is provided with a first shaft pin, and the second frame end is provided with a second shaft pin;

so that the tool rest can swing left and right on the bracket;

an operating rod axially penetrates through the second end part of the bracket, and a first arc-shaped groove is formed in the second frame end;

a gear is arranged at the end part of the operating rod, and a tooth structure matched with the gear is arranged in the first arc-shaped groove;

rotating the operating lever, the gear moving on the tooth structure to make the tool rest swing;

the first frame end is provided with a third shaft pin, the first end part is provided with a second arc-shaped groove, and the third shaft pin can move in the second arc-shaped groove;

the first pencil sharpening channel and the second pencil sharpening channel are respectively arranged on two sides of the hob.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the pencil sharpener comprises the switchable pencil sharpening mechanism.

Compared with the prior art, the multifunctional pencil sharpener has the advantages that the tool rest is provided with the plurality of different pencil sharpening channels, the tool rest can swing relative to the bracket, and one of the different pencil sharpening channels is aligned with the pencil feeding hole, so that the pencil is sharpened into different shapes or is suitable for pens with different diameters, the multifunctional pencil sharpener is multifunctional, and multiple purposes are realized.

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 illustrating the preferred embodiments and therefore should not be taken as limiting the scope of the utility model. 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 a pencil sharpener according to a preferred embodiment of the present invention;

FIG. 2 is a cross-sectional view of a pencil sharpener according to a preferred embodiment of the present invention;

FIG. 3 is an exploded view of a pencil sharpener according to a preferred embodiment of the present invention;

FIG. 4 is a first schematic view of a pencil sharpening mechanism according to a preferred embodiment of the present invention;

FIG. 5 is a second schematic view of a pencil sharpening mechanism according to a preferred embodiment of the present invention;

FIG. 6 is a first state diagram illustrating the use of a pencil sharpening mechanism according to a preferred embodiment of the present invention;

FIG. 7 is a second state diagram of the use of the pencil sharpening mechanism according to the preferred embodiment of the present invention;

FIG. 8 is a partial block diagram of a sharpening mechanism in accordance with a preferred embodiment of the present invention;

FIG. 9 is a first schematic view of the construction of a tool holder according to a preferred embodiment of the utility model;

FIG. 10 is a second schematic structural view of a toolholder in accordance with a preferred embodiment of the utility model;

FIG. 11 is a third schematic structural view of a toolholder in accordance with a preferred embodiment of the utility model;

FIG. 12 is a fourth schematic structural view of a toolholder in accordance with a preferred embodiment of the utility model;

FIG. 13 is a schematic structural view of a bracket according to a preferred embodiment of the present invention;

FIG. 14 is a first view of the engagement of the tool holder and the bracket according to a preferred embodiment of the present invention;

fig. 15 is a second schematic view of the engagement of the tool holder and the bracket according to a preferred embodiment of the utility model.

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 utility model.

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.

As shown in fig. 1-3, a preferred embodiment of the present invention provides a pencil sharpener that is widely used in various areas of life.

In different fields, the sharpening mechanisms of pencils sharpeners need to be customized to different configurations to sharpen the pen into the desired cut configuration. For example, writing pens, sketching pens, and eyebrow pens require different pen point lead lengths, and therefore, have different cutting methods.

In the conventional art, one pencil sharpener can only adapt to one cutting form, so that different pencil sharpeners are needed to be used for cutting different pencils, thereby not only increasing the cost, but also being not beneficial to storage and carrying. To this end, the present embodiment provides a multifunctional pencil sharpener that is adaptable to different sharpening configurations by a switchable pencil sharpening mechanism.

As shown in fig. 1 to 3, the pencil sharpener includes a housing 1 and a dust collection box 2 that collects pencil dust. The changeable mechanism of cutting a pencil sets up on the upper portion of casing 1, and collection bits box 2 is located the changeable mechanism of cutting a pencil below, and is movably connected with casing 1, can take out collection bits box 2 and pour the stroke bits wherein after certain quantity when the stroke bits wherein accumulate.

As shown in fig. 1-2, the housing 1 includes a front wall 4 provided with a pen insertion hole 3 and a rear wall 6 provided with a swing arm 5. The switchable pencil sharpener is arranged in the cavity between the front wall 4 and the rear wall 6 of the housing 1.

As shown in fig. 4-8, the switchable pencil sharpening mechanism includes a bracket 7 and a hob assembly. The hob assembly is arranged on the carrier 7. The hob assembly comprises a hob head 8 and a hob 9, and at least two pencil sharpening channels K which are suitable for different pencils or different cutting forms are arranged on the hob head 8. The sharpening passages K are all matched with the hob 9, and when the hob 9 is driven to rotate, the knife edge part 36 of the hob 9 acts on the pen point, so that the pen point is sharpened into different shapes.

As shown in fig. 2-3, a swivel base 10 is fixed to the front wall of the housing 1, and the bracket 7 is rotatably disposed along the central axis between the swivel base 10 and the rear wall of the housing 1. The rocker 5 is fixedly connected with the rear end of the bracket 7, and the bracket 7 and the hob 9 are driven to do revolution motion by rotating the rocker 5.

As shown in fig. 2 and 4, the front end of the hob assembly extends into the cavity of the runner base 10, and an internal gear 11 is arranged in the runner base 10; the front end of the hob 9 is provided with an external gear 12 which is meshed with the internal gear 11; when the rocker arm 5 is rotated, the hob assembly revolves, and the hob 9 rotates through the meshing of the external gear 12 and the internal gear 11, so that cutting is realized.

As shown in fig. 4-8, specifically, the bracket 7 includes a first end 13, a second end 14, and a bottom support 15, and the first end 13 of the bracket 7 is provided with a pen inlet hole 16. The pen inlet hole 16 is aligned with the pen inserting hole 3 of the shell 1 to form a pen inlet channel.

The blade carrier 8 is journalled between the first end 13 and the second end 14 so that the blade carrier 8 can pivot on a mounting 15 of the carriage 7. The tool holder 8 can be pivoted on the support 7 such that the insertion opening 16 can be selectively matched with different sharpening passages K. The pencil feeding hole 16 is in butt joint with the pencil sharpening passage K, and the pencil M is inserted into the pencil sharpening passage K from the pencil inserting hole 3 through the pencil feeding hole 16, so that the front section of the pencil M falls into the cutting area of the hob 9.

As shown in fig. 9 and 10, the sharpening passage K includes a straight portion 17 on the front side and a tapered portion 18 on the rear side. The side of the pencil sharpening channel K adjacent to the hob 9 is provided with a long notch 19, and the long notch 19 can allow the side part of the pencil to be exposed out of the pencil sharpening channel K and to be in contact with the blade part 36 of the hob 9. The form of the tapered portion 18 is a nib form after cutting.

It should be noted that the diameter of each sharpening passage K can be different to accommodate sharpening pens of different diameters, and thus pencils M of different thicknesses. Or the diameters of the sharpening passages K are the same, and the sharpening passages K are all suitable for pencils M with the diameters of 5cm, but the taper degrees of the tapered parts 18 of the sharpening passages K are different.

In addition, the lengths of the sharpening passages K are different, so that the insertion depths of the pens are different. Or the tip of the tapered part 18 is provided with a through hole for the lead to protrude out, so that the cutting length of the lead can be made different.

As shown in fig. 2-10, in this embodiment, the tool holder 8 includes a first holder end 20 and a second holder end 21, the first holder end 20 being provided with a first pivot pin 22, and the second holder end 21 being provided with a second pivot pin 23. The first end portion 13 is provided with a first pin hole into which the first shaft pin 22 is inserted, and the second end portion 14 is provided with a second pin hole into which the second shaft pin 23 is inserted, so that the tool rest 8 can swing left and right on the bracket 7.

The tool holder 8 has a double sharpening passage K, a first sharpening passage K1 and a second sharpening passage K2. In the first sharpening mode, the first sharpening passage K1 is aligned with the writing aperture 16. In the second sharpening mode, the second sharpening passage K2 is aligned with the writing aperture 16.

As shown in fig. 10, the first sharpening passage K1 includes a first inlet S1, the second sharpening passage K2 includes a second inlet S2, the first inlet S1 and the second inlet S2 are both disposed on the first frame end 20, and the first sharpening passage K1 and the second sharpening passage K2 are respectively disposed on two sides of the hob 9.

The switchable pencil sharpening mechanism also has a gear type positioning structure, so that the tool rest 8 rotates among various gears and is positioned, and the pen inserting hole 3 corresponds to the required pencil sharpening passage K.

As shown in fig. 8, the blade holder 8 preferably has a length less than the distance between the first end 13 and the second end 14, so that the blade holder 8 can move back and forth within the carriage 7. When the tool holder 8 is moved forward or backward along the carriage 7, the tool holder 8 can be positioned on the carriage 7, and the sharpening passage K of one of the tool holders is coaxially butted against the writing hole 16, and the axial direction is horizontal.

As shown in fig. 12-15, a gear type positioning structure is provided between the carrier 7 and the tool holder 8. Specifically, the bottom surface of the tool holder 8 is provided with positioning ribs: the first and second locating

ribs

25, 26 define locating grooves along the length of the shoe 15 on the inner surface of the shoe 15 adjacent the second end 14.

It should be noted that the number of positioning recesses can be one or two, which is adapted according to the specific arrangement of the tool holder 8 and the carrier 7. The number of the positioning grooves in this embodiment is two, and the two positioning grooves are a first positioning groove 41 engaged with the first positioning rib 25 and a second positioning groove 42 engaged with the second positioning rib 26. The first positioning groove is arranged at the same side of the first positioning convex rib 25, and the second positioning groove is arranged at the same side of the second positioning convex rib 26.

When the first frame end 20 of the tool holder 8 abuts against the first end 13 of the bracket 7, the first positioning groove and the second positioning groove are both adapted to be disengaged from the corresponding positioning grooves, and the tool holder 8 is not limited by positioning and can freely rotate on the bracket 7 to switch the sharpening passage K corresponding to the writing hole 16.

When the second end 21 of the blade holder 8 is moved towards the second end 14 of the bracket 7, the positioning rib on one of the blade holders 8 is selected to cooperate with the positioning groove of the shoe 15 to determine that one of the sharpening passages K is aligned with the writing aperture 16.

As shown in fig. 2, 3, 7 and 8, the second end 21 of the blade holder 8 is provided with an axially extending operating lever 27, and the second end 14 of the bracket 7 is provided with a first arc-shaped slot 28, through which the operating lever 27 passes, so that the blade holder 8 can swing on the bracket 7 when the operating lever 27 moves in the first arc-shaped slot 28.

Preferably, the end of the operating rod 27 is provided with a gear F, and a tooth structure G matched with the gear is arranged in the first arc-shaped groove 28; by turning the operating lever 27, the gear wheel is moved over the tooth structure to effect a swinging movement of the tool holder 8.

As shown in fig. 2-8, the swing arm 5 includes a base 29 connected to the housing through which the lever 27 of the bracket 7 passes and exposes the base 29 of the swing arm 5, and an outwardly extending shank 30. The user can operate the lever 27 from outside the base 29 of the swing arm 5 to switch the sharpening passage K.

Preferably, a hollow slot T is formed in the middle of the base 29, a knob portion 31 convenient to operate is arranged at the outer end of the operating rod 27, the knob portion 31 is located in the hollow slot T, and a hollow space for fingers to extend into is formed between the knob portion 31 and the wall of the hollow slot T.

It is further preferable that the operating lever 27 is further provided with a disk 32, the disk 32 is located inside the knob portion 31, and a shoulder 33 is provided on the peripheral side of the disk 32, and the shoulder 33 is engaged with a rib 34 located on the inner wall of the hollow T to limit the rotation range of the operating lever 27.

Meanwhile, in order to make the rocker arm 5 rotate more stably, the outer side of the rear wall of the shell 1 is also provided with an annular part 35, the base part 29 of the rocker arm 5 is positioned in the annular part 35, and the inner wall of the annular part 35 plays a role in supporting, limiting and guiding the base part 29 of the rocker arm 5.

The specific installation method and operation principle of the hob 9 will be described in detail below with reference to the drawings.

As shown in fig. 4-10, the roller cutter 9 is rotatably connected between a first shelf end 20 and a second shelf end 21, and the front end of the roller cutter 9 is higher than the rear end of the roller cutter 9, i.e. the end of the roller cutter 9 close to the pen inlet hole 16 is higher than the end far away from the pen inlet hole 16. The blade holder 8 comprises a base frame located between a first frame end 20 and a second frame end 21. The base frame has an inclined curved surface 40 that matches the inclined roller cutters 9 to avoid the roller cutters 9.

As shown in fig. 4-10, the first sharpening passage K1 and the second sharpening passage K2 are located on the lower side of the hob 9. The cutting edge part 36 of the hob cutter 9 is spiral, so that the pencil M can be stably conveyed forward while the cutting edge part 36 cuts the front end part of the pencil M until the pen point of the pencil M passes through the through hole at the front end of the sharpening passage K, and the cutting edge part 36 at the front side of the through hole cuts the pen point of the pencil M.

The switchable pencil sharpening mechanism provided by the present invention is described in detail above, and the principle and the implementation of the present invention are explained in the present text by applying specific examples, and the above description of the embodiments is only used to help understanding the present invention and the core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. The switchable pencil sharpening mechanism is characterized by comprising a bracket and a hob assembly;

the bracket comprises a first end part and a second end part, and the first end part of the bracket is provided with a pen inlet hole;

2. The switchable pencil sharpening mechanism of claim 1, wherein:

3. The switchable pencil sharpening mechanism of claim 2, wherein:

the bracket comprises a bottom support positioned between a first end and a second end;

when the second frame end of the tool rest moves towards the second end of the bracket, the positioning convex rib on one tool rest is selected to be matched with the positioning groove of the bottom support so as to ensure that one sharpening passage is aligned with the pencil feeding hole.

4. The switchable pencil sharpening mechanism of claim 2, wherein:

the second end of the tool rest is provided with an axially extending operating rod, the second end of the bracket is provided with a first arc-shaped groove, and the operating rod penetrates through the first arc-shaped groove;

5. The switchable pencil sharpening mechanism of claim 4, wherein the first frame end is provided with a third pivot pin, the first end is provided with a second arcuate slot, and the third pivot pin is movable within the second arcuate slot.

6. The switchable pencil sharpening mechanism of claim 2, wherein:

7. The switchable pencil sharpening mechanism is characterized by comprising a bracket and a hob assembly with double pencil sharpening channels;

the hob assembly comprises a tool rest and a hob;

the first end part is provided with a first pin hole for inserting a first shaft pin, and the second end part is provided with a second pin hole for inserting a second shaft pin, so that the tool rest can swing left and right on the bracket;

8. The switchable pencil sharpening mechanism of claim 7, wherein:

9. The switchable pencil sharpening mechanism of claim 8, wherein:

10. A pencil sharpener comprising a switchable pencil sharpener as claimed in any one of claims 1 to 9.