CN110949043A - Pencil sharpener - Google Patents
Pencil sharpener Download PDFInfo
- Publication number
- CN110949043A CN110949043A CN201911364418.XA CN201911364418A CN110949043A CN 110949043 A CN110949043 A CN 110949043A CN 201911364418 A CN201911364418 A CN 201911364418A CN 110949043 A CN110949043 A CN 110949043A
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- piece
- adjusting
- sliding
- axial
- elastic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L23/00—Sharpeners for pencils or leads
- B43L23/02—Sharpeners for pencils or leads with gearing
- B43L23/04—Sharpeners for pencils or leads with gearing with cranked handles
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Abstract
The invention discloses a pencil sharpener, which comprises a shell (1), a cutting assembly (2) and a pencil point thickness adjusting assembly, wherein the cutting assembly (2) is arranged on the shell (1); the nib thickness adjusting assembly comprises a sliding piece which axially slides and can be abutted against the nib, an adjusting piece which adjusts the axial position of the sliding piece, and an elastic piece (3) which prevents the sliding piece and the adjusting piece from relatively approaching; one part of the sliding piece is in sliding fit with the adjusting piece, and the other part of the sliding piece is in sliding fit with the cutting assembly (2); the adjusting piece is connected with the cutting assembly (2); the elastic piece (3) is axially arranged between the sliding piece and the adjusting piece; the sliding part can also be abutted against the adjusting part. The pencil sharpener can cut penpoints with different thicknesses and can ensure normal cutting.
Description
Technical Field
The invention relates to the technical field of stationery, in particular to a pencil sharpener.
Background
The pencil sharpener is a common pencil sharpening tool, and is convenient to use, clean and deeply popular with students.
Most of the existing pencil sharpeners on the market are provided with a pencil point thickness adjusting assembly, and pencil points with different thicknesses are sharpened by the pencil sharpeners through operating the pencil point thickness adjusting assembly. For example, a refill thickness adjusting mechanism of a pencil sharpener is disclosed on a website of the intellectual property office of China, and the thickness of a pencil point is adjusted by rotating a push rod to push an adjusting rod to move axially so as to limit the depth of the pencil point extending into a knife rest. Although the pencil sharpener can cut pencils with different thick and thin penpoints, the penpoint is easily broken by the hard contact between the pencil point and the end part of the adjusting rod during cutting, particularly during rapid cutting, so that the waste of the pencil is caused, and the user experience is reduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a pencil sharpener which can cut pencils with different thicknesses and can ensure normal cutting.
The technical scheme of the invention is that the pencil sharpener comprises a shell, a cutting assembly and a pencil point thickness adjusting assembly, wherein the cutting assembly is arranged on the shell; the nib thickness adjusting assembly comprises a sliding piece which axially slides and can be abutted against the nib, an adjusting piece which adjusts the axial position of the sliding piece, and an elastic piece which prevents the sliding piece and the adjusting piece from relatively approaching; one part of the sliding part is in sliding fit with the adjusting part, and the other part of the sliding part is in sliding fit with the cutting assembly; the adjusting piece is connected with the cutting assembly; the elastic piece is axially arranged between the sliding piece and the adjusting piece; the sliding part can also abut against the adjusting part.
The adjusting piece comprises an adjusting button and an adjusting button fixing frame, and the adjusting button fixing frame is connected with the cutting assembly; the adjusting button is rotationally connected with the adjusting button fixing frame.
The adjusting button fixing frame is provided with a first axial through hole, and one part of the sliding piece is in sliding fit with the first axial through hole; one end of the sliding part is provided with at least one first lug, a plurality of second lugs which have different axial heights and can respectively abut against the first lugs are arranged in the adjusting button, and the second lugs are circumferentially arranged.
The axial heights of the plurality of circumferentially arranged second lugs are sequentially increased.
The pencil sharpener further comprises an elastic rotating pause device, the elastic rotating pause device comprises at least one elastic bulge and a plurality of grooves matched with the elastic bulges, the elastic bulges are respectively arranged on the adjusting button and the adjusting button fixing frame, and the at least one elastic bulge is in sliding fit with the grooves.
The elastic rotary pause device further comprises at least one fixing protrusion and an arc-shaped groove, wherein the fixing protrusion and the arc-shaped groove are respectively arranged on the adjusting button and the adjusting button fixing frame, the arc-shaped groove is matched with the fixing protrusion, and the at least one fixing protrusion is in sliding fit with the arc-shaped groove.
One end of the elastic piece is abutted against the inner end face of the adjusting button, and the other end of the elastic piece is abutted against one end of the sliding piece; the elastic piece is arranged at the outer edge or the inner edge of the second bumps.
The outer surface of the adjusting button is provided with a bulge.
The sliding piece comprises a sliding rod, a second axial through hole is formed in the cutting assembly, and the first axial through hole is communicated with the second axial through hole; the sliding rod is in sliding fit in the first axial through hole and the second axial through hole; and a circumferential limiting device is arranged on the sliding rod and the first axial through hole or on the sliding rod and the second axial through hole.
The sliding piece also comprises a pen point stop block, and the pen point stop block is in sliding fit with the cutting assembly; the sliding direction connecting line of the pen point stop block and the extension line of the pen core axis form an acute angle; one end of the sliding rod is abutted against the elastic piece, and the other end of the sliding rod can be abutted against the pen point stop block.
After adopting the structure, compared with the prior art, the invention has the following advantages:
the pencil sharpener of the invention can adjust the axial position of the sliding piece through the adjusting piece, so that the sliding piece slides to adjust the position of the pencil point penetrating into the cutting assembly, and the thickness adjustment of the pencil point is realized. And because the elastic part is arranged between the adjusting part and the sliding part, the pen point is in flexible contact with the sliding part, so that the pen point is not easy to break when different pen points with different thicknesses are cut, the waste of pencils is avoided, and the user experience is improved.
Drawings
FIG. 1 is a partial cross-sectional view of a sharpener of the present invention.
Fig. 2 is a half-sectional view (without the housing) of the sharpener of the present invention.
Fig. 3 is an exploded view (without the housing) of the sharpener of the present invention in a first orientation.
Fig. 4 is an exploded view (without the housing) of the sharpener of the present invention in a second orientation.
Fig. 5 is a schematic view of a tool holder.
Fig. 6 is an exploded view of a first orientation of the adjustment member.
Fig. 7 is an exploded view of a second orientation of the adjustment member.
The drawing shows 1, a housing, 2, a cutting assembly, 2.1, a tool rest, 2.11, a support frame, 2.12, a cutter, 2.2, a gear piece, 2.3, a rocker arm, 3, an elastic piece, 4, an adjusting button, 5, an adjusting button fixing frame, 6, a first axial through hole, 7, a first bump, 8, a second bump, 9, an elastic bulge, 10, a groove, 11, a fixing bulge, 12, an arc-shaped groove, 13, a bulge, 14, a sliding rod, 15, a second axial through hole, 16, a pen point stopper, 17, a pencil hole, 18, a pencil, 19, a circular ring-shaped piece, 20, a cylindrical groove, 21, a sliding block, 22, a sliding groove, 23, an inverted buckle, 24, a cylindrical piece, 25, a sheet-shaped piece, 26, a sheet-shaped hole, 27, a cylindrical hole, 28, an extension line, 29 and a sliding direction connecting line.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
As shown in fig. 1, 2, 3 and 4, the pencil sharpener of the present invention comprises a housing 1, a cutter assembly 2 and a tip thickness adjusting assembly, wherein the cutter assembly 2 is mounted on the housing 1; the casing 1 is provided with a pencil hole 17, and a pencil 18 passes through the pencil hole 17 and enters the cutting assembly 2; the cutting assembly 2 comprises a tool rest 2.1, a gear piece 2.2 and a rocker arm 2.3, and the gear piece 2.2 is rotatably connected to the shell 1; the tool rest 2.1 comprises a support frame 2.11 and a cutter 2.12, one side of the support frame 2.11 is fixed on one side of the gear piece 2.2, and the other side of the support frame 2.11 is connected with the shell 1; the cutter 2.12 is rotationally connected to the support frame 2.11, the cutter 2.12 is also meshed with the gear piece 2.2, and the cutter 2.12 is driven to rotate by the gear piece 2.2; the rocker arm 2.3 is connected to the other side of the gear element 2.2.
The nib thickness adjusting component comprises a sliding piece which axially slides and can be abutted against the nib, an adjusting piece which adjusts the axial position of the sliding piece, and an elastic piece 3 which prevents the sliding piece and the adjusting piece from relatively approaching; one part of the sliding piece is in sliding fit with the adjusting piece, and the other part of the sliding piece is in sliding fit with the cutting assembly 2; the adjusting piece is connected with the cutting assembly 2; the elastic piece 3 is axially arranged between the sliding piece and the adjusting piece; the sliding part can also abut against the adjusting part.
The adjusting part comprises an adjusting button 4 and an adjusting button fixing frame 5, the adjusting button fixing frame 5 is connected with the cutting assembly 2, and the adjusting button fixing frame 5 and the cutting assembly 2 are buckled in the embodiment; the adjusting button 4 is connected with the adjusting button fixing frame 5 in a rotating mode, the adjusting button fixing frame 5 is provided with a circular ring-shaped part 19, a cylindrical groove 20 matched with the circular ring-shaped part 19 in size and shape is formed in the adjusting button 4, and the circular ring-shaped part 19 rotates in the cylindrical groove 20. The adjustment member may also be a plurality of switches of different strokes, the slide being driven in different positions by alternate pressing of the plurality of switches. The adjusting knob fixing frame 5 is provided with a back-off 23 which is matched with a groove (not shown in the figure) in the adjusting knob 4 to form axial limit to the adjusting knob 4.
As shown in fig. 6 and 7, the knob holder 5 is provided with a first axial through hole 6, and a part of the sliding member is slidably fitted in the first axial through hole 6; one end of the sliding part is provided with at least one first lug 7, a plurality of second lugs 8 which have different axial heights and can respectively abut against the first lugs 7 are arranged in the adjusting button 4, and the second lugs 8 are circumferentially arranged, namely the second lugs 8 form a circle; that is, the plurality of second bumps 8 form a plurality of step surfaces. In this embodiment, there are two first bumps 7, and the two first bumps 7 are symmetrically disposed. The second bumps 8 are divided into two groups, wherein one group is used for abutting against one first bump 7, and the other group is used for abutting against the other first bump 7. Alternatively, one end of the sliding member may be provided with at least one first protrusion 7, and the adjusting knob 4 may be provided with a spiral surface (not shown) which is spirally raised in axial height and can abut against the first protrusion 7.
The axial heights of the plurality of circumferentially arranged second protrusions 8 increase sequentially.
The pencil sharpener further comprises an elastic rotation pause device, the elastic rotation pause device comprises at least one elastic bulge 9 and a plurality of grooves 10, the elastic bulge 9 and the grooves 10 are respectively arranged on the adjusting button 4 and the adjusting button fixing frame 5, the grooves 10 are arranged on the outer circular surface of the adjusting button fixing frame 5, the at least one elastic bulge 9 is in sliding fit with the grooves 10, and the grooves 10 are arranged on the inner circular surface of the adjusting button 4.
The elastic rotation pause device further comprises at least one fixing protrusion 11 and an arc-shaped groove 12, wherein the fixing protrusion 11 and the arc-shaped groove 12 are respectively arranged on the adjusting knob 4 and the adjusting knob fixing frame 5, the arc-shaped groove 12 is arranged on the outer circular surface of the adjusting knob fixing frame 5, the arc-shaped groove 12 is arranged on the inner circular surface of the adjusting knob 4, and the at least one fixing protrusion 11 is in sliding fit in the arc-shaped groove 12.
One end of the elastic part 3 is abutted against the inner end surface of the adjusting button 4, and the other end of the elastic part 3 is abutted against one end of the sliding part; the elastic member 3 is provided at an outer edge or an inner edge of the plurality of second protrusions 8, i.e., the cooperation of the elastic member 3 with the first protrusions 7 and the second protrusions 8 does not interfere. In the present embodiment, the elastic member 3 is a spring, and may be another elastic member such as hydraulic pressure or air.
The outer surface of the adjusting button 4 is provided with a bulge 13, which is convenient for users to identify the adjusting position.
The sliding part comprises a sliding rod 14, a second axial through hole 15 is arranged in the cutting assembly 2, and the first axial through hole 6 is communicated with the second axial through hole 15; the sliding rod 14 is in sliding fit in the first axial through hole 6 and the second axial through hole 15; in this embodiment, the sliding rod 14 is in two parts, the first part is a cylindrical member 24, wherein the cylindrical member 24 comprises a large cylindrical member and a small cylindrical member, the large cylindrical member is slidably fitted in the first axial through hole 6, and the small cylindrical member is slidably fitted in the second axial through hole 15; the second part is a sheet-shaped member 25, the second axial through hole 15 is divided into two parts, the first part is a cylindrical hole 27 for the cylindrical member 24 to slide, the second part is a sheet-shaped hole 26 for the sheet-shaped member 25 to slide, and the inner end surface of the sheet-shaped hole 26 and the adjusting knob 4 form an axial limit for the sliding member.
The sliding rod 14 and the first axial through hole 6 or the sliding rod 14 and the second axial through hole 15 are provided with circumferential limiting devices, that is, the sliding rod 14 and the first axial through hole 6 are provided with circumferential limiting devices, or the sliding rod 14 and the second axial through hole 15 are provided with circumferential limiting devices. In this embodiment, the circumferential limiting means comprises a sliding block 21 disposed in the second axial through hole 15 and a sliding groove 22 disposed on the outer circumferential surface of the sliding rod 14, and the sliding block 21 is slidably fitted in the sliding groove 22.
The sliding piece further comprises a nib stopper 16, the nib stopper 16 is in sliding fit with the cutting assembly 2, two sides of the nib stopper 16 are hooked on the support frames 2.11 of the cutting assembly 2, and the support frames 2.11 are used for limiting the two sides of the nib stopper; as shown in fig. 5, a sliding direction connecting line 29 of the nib stopper 16 and an extension line 28 of the refill axis form an acute angle, generally about 6 degrees, and another angle is an obtuse angle, and the two angles are combined into 180 degrees; one end of the slide rod 14 abuts against the elastic member 3, and the other end of the slide rod 14 abuts against the nib stopper 16.
When the device is used, the adjusting button 4 is firstly rotated, so that the first lug 7 is abutted against one of the second lugs 8, and at the moment, the first lug 7 is not contacted with the second lug 8 under the action of the elastic piece 3, so that the second lug 7 is not interfered with the second lug 8 in the circumferential direction;
inserting pencil 18 in the ware of cutting, nib and nib dog 16 contactless this moment, then rotating rocking arm 2.3, cutting the pencil, until the nib offsets with nib dog 16 to overcome the effort of elastic component 3 and make first lug 7 and the contact of second lug 8, make the nib fixed, the machine of cutting idle running can take out pencil 18 this moment. After the pencil 18 is taken out, the first projection 7 and the second projection 8 are far away from each other under the action of the elastic member 3 to return to the initial state.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. But all changes which come within the scope of the invention are intended to be embraced therein.
Claims (10)
1. A pencil sharpener comprises a shell (1), a cutting assembly (2) and a pencil point thickness adjusting assembly, wherein the cutting assembly (2) is arranged on the shell (1); the method is characterized in that: the nib thickness adjusting assembly comprises a sliding piece which axially slides and can be abutted against the nib, an adjusting piece which adjusts the axial position of the sliding piece, and an elastic piece (3) which prevents the sliding piece and the adjusting piece from relatively approaching; one part of the sliding piece is in sliding fit with the adjusting piece, and the other part of the sliding piece is in sliding fit with the cutting assembly (2); the adjusting piece is connected with the cutting assembly (2); the elastic piece (3) is axially arranged between the sliding piece and the adjusting piece; the sliding part can also be abutted against the adjusting part.
2. The pencil sharpener as claimed in claim 1, wherein the adjusting member comprises an adjusting knob (4) and an adjusting knob holder (5), the adjusting knob holder (5) being connected to the cutting assembly (2); the adjusting button (4) is rotationally connected with the adjusting button fixing frame (5).
3. The pencil sharpener as claimed in claim 2, wherein the adjusting button holder (5) is provided with a first axial through hole (6), and a part of the slider is slidably fitted in the first axial through hole (6); one end of the sliding part is provided with at least one first lug (7), a plurality of second lugs (8) which have different axial heights and can respectively abut against the first lugs (7) are arranged in the adjusting button (4), and the second lugs (8) are circumferentially arranged.
4. The sharpener according to claim 3, characterized in that the axial heights of a plurality of circumferentially arranged second projections (8) increase in succession.
5. The pencil sharpener as claimed in claim 2, wherein the pencil sharpener further comprises an elastic rotary setback device, the elastic rotary setback device comprises at least one elastic protrusion (9) and a plurality of grooves (10) matched with the elastic protrusions (9), the elastic protrusions (9) are respectively arranged on the adjusting knob (4) and the adjusting knob fixing frame (5), and the at least one elastic protrusion (9) is in sliding fit in the grooves (10).
6. The pencil sharpener as claimed in claim 5, wherein the elastic rotary setback device further comprises at least one fixing protrusion (11) and an arc-shaped groove (12) which are respectively arranged on the adjusting knob (4) and the adjusting knob holder (5), and the at least one fixing protrusion (11) is slidably fitted in the arc-shaped groove (12).
7. The pencil sharpener as claimed in claim 3, characterized in that one end of the elastic member (3) abuts against the inner end face of the adjusting knob (4), and the other end of the elastic member (3) abuts against one end of the slider; the elastic piece (3) is arranged at the outer edge or the inner edge of the second bumps (8).
8. The pencil sharpener as claimed in claim 2, characterized in that the adjusting knob (4) is provided with a protrusion (13) on its outer surface.
9. The sharpener of claim 1, wherein the slider comprises a sliding rod (14), the cutting assembly (2) is provided with a second axial through hole (15), and the first axial through hole (6) is communicated with the second axial through hole (15); the sliding rod (14) is in sliding fit in the first axial through hole (6) and the second axial through hole (15); and a circumferential limiting device is arranged on the sliding rod (14) and the first axial through hole (6) or on the sliding rod (14) and the second axial through hole (15).
10. The sharpener of claim 9, wherein said slider further includes a nib stop (16), said nib stop (16) being slidably engaged with said cutter assembly (2); the sliding direction connecting line (29) of the pen point stop block (16) and the extension line (28) of the pen core axis form an acute angle; one end of the sliding rod (14) is abutted against the elastic piece (3), and the other end of the sliding rod (14) can be abutted against the pen point stop block (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911364418.XA CN110949043A (en) | 2019-12-26 | 2019-12-26 | Pencil sharpener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911364418.XA CN110949043A (en) | 2019-12-26 | 2019-12-26 | Pencil sharpener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110949043A true CN110949043A (en) | 2020-04-03 |
Family
ID=69984224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911364418.XA Pending CN110949043A (en) | 2019-12-26 | 2019-12-26 | Pencil sharpener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110949043A (en) |
-
2019
- 2019-12-26 CN CN201911364418.XA patent/CN110949043A/en active Pending
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