CN108501594B - Assembling structure of rocking handle of pencil sharpener, mounting structure of rocking handle and knife rest and pencil sharpener - Google Patents
Assembling structure of rocking handle of pencil sharpener, mounting structure of rocking handle and knife rest and pencil sharpener Download PDFInfo
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- CN108501594B CN108501594B CN201810575063.8A CN201810575063A CN108501594B CN 108501594 B CN108501594 B CN 108501594B CN 201810575063 A CN201810575063 A CN 201810575063A CN 108501594 B CN108501594 B CN 108501594B
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- rocking handle
- clamping
- protruding part
- pencil sharpener
- clamping ring
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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
- B43L23/008—Sharpeners for pencils or leads with rotating cutting bodies
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Abstract
The invention discloses a rocking handle assembling structure of a pencil sharpener, a rocking handle and knife rest mounting structure and the pencil sharpener, which comprises a rocking handle and a knife rest with a first bulge part on the round outer surface of one end part, wherein the rocking handle comprises a rocking handle body with a mounting cavity and a clamping ring with an inner hole, the rocking handle body is connected and fixed with the clamping ring in an ultrasonic manner, the inner side of the clamping ring is provided with a clamping surface for clamping the first bulge part of the end part of the knife rest, the front side of the starting end of the clamping surface is provided with an elastic anti-withdrawal part, and the elastic anti-withdrawal part can deform outwards after being subjected to extrusion force from inside to outside so that the first bulge part of the end part of the knife rest can pass through the elastic anti-withdrawal part and enter the clamping surface; when the extrusion force is lost, the elastic anti-return part protrudes inwards from the starting end of the clamping surface; the elastic anti-withdrawal part on the clamping ring adopts an elastic structure, so that the first protruding part can be prevented from hard extruding the anti-withdrawal part on the clamping ring to cause abrasion of the anti-withdrawal part, and the anti-withdrawal effect cannot be achieved.
Description
Technical Field
The invention relates to an assembly structure of a pencil sharpener, in particular to an assembly structure of a crank of the pencil sharpener, a mounting structure of the crank and a knife rest and the pencil sharpener.
Background
The pencil sharpener comprises a shell, a machine core and a hand crank, wherein the machine core comprises a knife rest and a hob, the hand crank is fixedly connected with the knife rest, and when the hand crank drives the knife rest to rotate, the hob on the knife rest cuts a pencil. The traditional hand crank and the knife rest are fixed through a thread structure; namely, the end part of the tool rest is provided with external threads, and the mounting hole of the hand crank is internally provided with internal threads; the end of the tool rest is in threaded connection with the mounting hole of the hand crank.
The pencil sharpener handle mounting structure has the following problems:
1. traditional screw thread fixed's hand crank can only assemble through manual, can't be applicable to industrial automation and assemble, therefore production efficiency is lower.
2. Because of the sagging of the hob weight, the consistency of the hob and the hand crank direction is difficult to ensure by the threaded connection structure, and the screwing force of each assembling worker is different, so that the final position of each fixed handle on the pencil sharpener is different.
The same applicant applied for the mounting structure of the pencil sharpener handle of application number 2017112848833 in 2017-12-7, specifically discloses a handle structure suitable for automatic assembly, which is positioned and fixed after being matched with the clamping position of a handle mounting hole through a convex buckle at the end part of a knife rest. The clamping position is provided with an anti-withdrawal point and a limiting point to prevent the end part of the tool rest from pushing out of the positioning position, wherein the anti-withdrawal point is formed by plastic in an integral injection molding mode, and when the end part of the tool rest enters the clamping position from the anti-withdrawal point, the anti-withdrawal point is easily worn, so that the basic function of the anti-withdrawal point is influenced; in addition, as the limiting points are integrally injection-molded on the chuck in a sheet structure, when the chuck is welded in the mounting hole of the handle by ultrasonic waves, the limiting points of the sheet structure are easily broken by vibration caused by the ultrasonic waves, so that the handle part is scrapped.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a reliable assembling structure of the crank of the pencil sharpener, which is assembled by adopting an ultrasonic welding mode, and a mounting structure of the knife rest and the crank, which is assembled automatically, so that the assembling efficiency of the crank of the pencil sharpener can be improved; further provides a pencil sharpener with the knife rest and rocking handle mounting structure.
The technical scheme adopted for solving the technical problems is as follows: the assembling structure of the crank of the pencil sharpener comprises a crank body with an installing cavity and a clamping ring with an inner hole, wherein the crank body is fixedly connected with the clamping ring in an ultrasonic way, and the inner side of the clamping ring is provided with a clamping surface for clamping a first protruding part at the end part of a knife rest; when the extrusion force is eliminated, the elastic anti-return part protrudes inwards from the starting end of the clamping surface.
The invention further preferably comprises the following steps: the clamping ring is provided with two parallel grooves, the elastic plastic sheet is formed by the two parallel grooves, and the elastic anti-back part is a second protruding part arranged at the inner side of the tail end of the elastic plastic sheet.
The invention further preferably comprises the following steps: the second protruding part is provided with a first inclined plane, the first inclined plane is gradually increased from the front end to the rear end, and the rear end of the first inclined plane is higher than the starting end of the Yu Kawei surface.
The invention further preferably comprises the following steps: the clamping surface is provided with a second inclined surface.
The invention further preferably comprises the following steps: the inner wall of the cavity of the rocking handle body is provided with a third protruding part protruding radially, and the third protruding part is positioned at the tail end of the clamping surface of the clamping ring to serve as a limiting point of the first protruding part at the end part of the tool rest.
The invention further preferably comprises the following steps: the rocking handle and tool rest mounting structure comprises a rocking handle and a tool rest with a first bulge part on the circular outer surface of one end part of the rocking handle, wherein the rocking handle comprises a rocking handle body with a mounting cavity and a clamping ring with an inner hole, the rocking handle body is fixedly connected with the clamping ring in an ultrasonic manner, the inner side of the clamping ring is provided with a clamping surface for clamping the first bulge part of the end part of the tool rest, and the rocking handle mounting structure is characterized in that the front side of the starting end of the clamping surface is provided with an elastic anti-withdrawal part which can deform outwards after being subjected to the extrusion force of the first bulge part from inside to outside so that the first bulge part of the end part of the tool rest can pass through the elastic anti-withdrawal part to enter the clamping surface; when the extrusion force is eliminated, the elastic anti-return part protrudes inwards from the initial end of the clamping surface so as to prevent the first protruding part positioned on the clamping surface from moving out from the direction of the elastic anti-leg part.
The invention further preferably comprises the following steps: the clamping ring is provided with two parallel grooves, the elastic plastic sheet is formed by the two parallel grooves, and the elastic anti-back part is a second protruding part arranged at the inner side of the tail end of the elastic plastic sheet.
The invention further preferably comprises the following steps: the second protruding part is provided with a first inclined plane, the first inclined plane is gradually increased from the front end to the rear end, and the rear end of the first inclined plane is higher than the starting end of the Yu Kawei surface.
The invention further preferably comprises the following steps: the clamping surface is provided with a second inclined surface, and a first protruding part at the end part of the tool rest is clamped on the second inclined surface; the inner wall of the cavity of the rocking handle body is provided with a third protruding part protruding radially, and the third protruding part is positioned at the tail end of the clamping surface of the clamping ring to serve as a limiting point of the first protruding part at the end part of the tool rest.
The invention further preferably comprises the following steps: the pencil sharpener comprises the rocking handle and the knife rest mounting structure.
Compared with the prior art, the invention has the advantages that: the rocking handle body and the clamping ring are welded by ultrasonic waves, an anti-withdrawal point on the clamping ring adopts an elastic structure, when a first protruding part at the end part of the tool rest enters from an inner hole of the clamping ring, the first protruding part at the end part of the tool rest extrudes an elastic anti-withdrawal part, so that the elastic anti-withdrawal part moves outwards, and the first protruding part at the end part of the tool rest can pass through the elastic anti-withdrawal part to enter into a clamping surface; when the extrusion force disappears, the elastic anti-back part protrudes inwards from the starting end of the clamping surface, and the elastic anti-back part can prevent the first protruding part from leaving the clamping surface. Compared with a hard anti-withdrawal point, the anti-withdrawal point is easy to wear when the first protruding part enters, and the anti-withdrawal effect cannot be achieved after the first protruding part is worn.
Drawings
FIG. 1 is a schematic view of the whole structure of a pencil sharpener;
FIG. 2 is a schematic view of a pencil sharpener;
FIG. 3 is a second schematic view of the structure of the pencil sharpener;
FIG. 4 is a disassembled view of the pencil sharpener;
FIG. 5 is a second exploded view of the pencil sharpener;
FIG. 6 is a schematic diagram of the control and adjustment components;
FIG. 7 is a schematic diagram II of the control and adjustment components;
FIG. 8 is a schematic view of the assembly of the tool holder with the collar;
FIG. 9 is a schematic view of the assembly of the tool holder with the crank;
FIG. 10 is a schematic view of a collar;
fig. 11 is a schematic diagram of a second collar structure.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
The traditional pencil sharpener comprises a shell, a rocking handle and a pencil sharpening mechanism, wherein the pencil sharpening mechanism comprises a knife rest 1, a hob 4 and a runner seat 10 which are arranged on the knife rest 1; as shown in fig. 2, the gear 41 at the end of the hob 4 is matched with the internal gear 101 of the runner base 10, and the end of the tool rest 1 is driven by a rocking handle; the user shakes the rocking handle to enable the tool rest to rotate; the hob 4 is driven by the tool rest 1 to rotate, and simultaneously, the hob 4 rotates due to the matching of the internal gear 101 of the rotating wheel seat 10; the hob 4 rotates to cut the pencil inserted into the pencil sharpener.
As shown in fig. 8 and 9, the crank assembly structure of the pencil sharpener comprises a crank body 8 with an installation cavity and a clamping ring 12 with an inner hole 1204, wherein the crank body 8 is fixedly connected with the clamping ring 12 in an ultrasonic manner, a clamping surface 1201 for clamping a first protruding part 13 of a tool rest end 15 is arranged on the inner side of the clamping ring 12, an elastic anti-back part 1202 is arranged on the front side of the starting end of the clamping surface 1201, and the elastic anti-back part 1202 can deform outwards after being subjected to extrusion force from inside to outside, so that the first protruding part 13 of the tool rest end 15 can pass through the elastic anti-back part 1202 and enter the clamping surface 1201; when the pressing force is removed, the elastic anti-back 1202 protrudes inward from the start of the locking surface 1201.
The rocking handle body 8 is provided with a notch 82, the clamping ring 12 is provided with a protrusion 1203, and the protrusion 1203 on the clamping ring 12 is clamped into the notch 82 of the rocking handle 8 and welded by ultrasonic waves.
The mounting structure of the rocking handle and the tool rest comprises the tool rest 1 with a first bulge part on the circular outer surface of the rocking handle and one end part, the rocking handle comprises a rocking handle body 8 with a mounting cavity 83 and a clamping ring 12 with an inner hole 1204, the rocking handle body 8 is connected and fixed with the clamping ring 12 by ultrasonic waves, as shown in fig. 8 to 11, the inner side of the clamping ring 12 is provided with a clamping surface 1201 for clamping the first bulge part 13 of the tool rest end part 15, the front side of the starting end of the clamping surface 1201 is provided with an elastic anti-withdrawal part 1202, and the elastic anti-withdrawal part 1202 can deform outwards after being subjected to the extrusion force of the first bulge part 13 from inside to outside, so that the first bulge part 13 of the tool rest end part 15 can enter the clamping surface 1201 beyond the elastic anti-withdrawal part 1202; when the pressing force is removed, the elastic anti-back portion 1202 protrudes inward from the start end of the locking surface 1201 to prevent the first protruding portion 13 located on the locking surface 1201 from moving out of the elastic anti-back portion 1202.
As shown in fig. 10 and 11, the collar 12 is provided with two parallel grooves 121, and the elastic plastic piece 123 formed by the two parallel grooves 121, and the elastic anti-back portion 1202 is a second protruding portion 122 provided inside the end of the elastic plastic piece 123. During the process of loading the tool holder end 15, the first protrusion 13 of the tool holder end 15 presses the second protrusion 122, so that the second protrusion 122 moves outwards, and after the tool holder end 15 enters the clamping surface 1201, the second protrusion 122 returns to the original state.
The second protruding portion 122 has a first inclined surface 1221, where the first inclined surface 1221 gradually increases from the front end to the rear end, and the rear end of the first inclined surface 1221 is higher than the starting end of the clamping surface 1201 to form a drop surface 14, and when the first protruding portion 13 at the end of the tool holder is about to rotate toward the elastic anti-back portion 1202, the drop surface 14 can prop against the first protruding portion 13, so as to prevent the first protruding portion 13 at the end of the tool holder from leaving from the first inclined surface 1221, and play a role of anti-back point.
The clamping surface 1201 is a second inclined surface 1222, and the first protrusion 13 of the tool holder end 15 is clamped on the second inclined surface 1222; the inner wall of the mounting cavity 83 of the crank body 8 is provided with a third protruding portion 84 protruding radially, and after the pencil sharpener is assembled, the third protruding portion 84 is located at the end of the clamping face 1201 of the clamping ring 12 to serve as a limiting point of the first protruding portion 13 of the tool rest end portion 15, so that the first protruding portion 13 is prevented from being separated from the clamping face 1201. The traditional retainer ring is a plastic sheet, the connection strength of limiting points on the sheet is lower, and the limiting points are easy to break due to ultrasonic vibration. The crank body 8 has a thicker three-dimensional structure, and the third protrusion 84 is integrally formed in the cavity of the tool holder end 15, so that the reliability and strength of the structure are relatively high. When the ultrasonic pair collar 12 is welded to the crank handle, the third boss 84 is not broken by vibration caused by the ultrasonic waves.
In addition, the pencil sharpener can be switched to two modes of a color pencil and a common pencil; common pencils include type 2B, HB pencils, which typically require a cutting length of 21-22 mm for wood and carbon cores, wherein the cutting length of the carbon core is 8 mm or 8.5 mm for writing by students, office workers, etc.
The cutting requirements of the color pencil are that the cutting length of the wood and the core material is 20-21 mm, wherein the cutting length of the core material is 7 mm or 7.5 mm, and the color pencil is mainly used for color drawing.
The pencil sharpening mechanism can meet two sharpening states of a common pencil and a colored pencil, and specifically comprises:
as shown in fig. 4 to 7, the color lead and common lead universal pencil sharpening mechanism comprises a cutter frame 1, an adjusting part 2 and a control part 3, wherein the cutter frame 1 is connected with a hob 4 in a shaft way, the front end of the adjusting part is provided with a stop rod 21, the stop rod 21 of the adjusting part 2 penetrates into the cutter frame 1, the rear end of the adjusting part 2 is provided with two pairs of gear grooves 22 with different depths along the length direction of the stop rod 21, and the control part 3 comprises a top pressing part 31 which can be inserted into the gear grooves 22; two gear grooves 22 are arranged in each pair, the depths of the two pairs of gear grooves 22 are different, wherein the two first gear grooves 2201 are deeper, and the two second gear grooves 2202 are shallower. The difference in depth between the two ranges from 0.5 to 2 mm, preferably between 0.8 and 1.2 mm. As shown in fig. 1 to 3, the tool holder 1, the hob 4, the housing, the crank, etc. are not different from the conventional pencil sharpener, and the present invention will not be described.
The control part 3 and the adjusting part 2 of the invention can be injection molded.
As shown in fig. 4 to 7, the rear end of the regulating member 2 includes an annular body 24 having a through hole 23 in the middle, two pairs of shift recesses 22 are distributed on the annular body 24 in a crisscross shape, and the control member 3 includes a cylindrical body 32 having a through hole 23 in the middle and pressing portions 31 corresponding to the shift recesses 22 symmetrically distributed on the sides of the cylindrical body 32.
When the top pressing part 31 is positioned in the deeper first gear groove 2201, the pencil sharpening mechanism is in a common lead sharpening mode; when the top pressing part 31 is positioned in the shallower second gear groove 2202, the pencil sharpening mechanism is in a color lead cutting mode, that is, when the top pressing part 31 is positioned in the deeper first gear groove 2201, the stop rod 21 is positioned at the rear position of the tool rest, and the cut pencil lead is longer; when the pressing portion 31 is in the shallower second gear groove 2202, the stopper rod 21 is positioned at the front of the tool holder 1, and the cut pen core is shorter, and the difference between the two is about 1 mm.
As shown in fig. 1 to 3, the stopper rod 21 has a square structure to be matched with the square hole 11 in the tool holder 1, and the movement of the stopper rod 21 on the tool holder 1 is linear movement; as shown in fig. 1, 6 and 7, the annular body 24 of the other adjusting part 2 is provided with symmetrically arranged guide reinforcing ribs 5, and the guide reinforcing ribs 5 are matched with the guide grooves 6 in the tool rest 1. Since a rotational force is applied to the stopper rod 21 when the knob 7 adjusts the pressing portion 31 in the gear groove 22, the guide rib 5 can further prevent the stopper rod 21 from being twisted off in order to prevent the stopper rod 21 from being broken.
As shown in fig. 7 and 8, two smooth transition inclined planes are formed between two adjacent gear grooves 22, the front end of the pressing portion 31 is a circular head 311, the circular head 311 can move on the two inclined planes, and when the knob screws the control part 3, the pressing portion 31 can easily enter the corresponding gear groove 22.
As shown in fig. 4 and 5, the rear end of the control member 3 is fitted with a knob 7, and both side portions of the knob 7 are provided with grooves 71 which are insertable into the rear end of the pressing portion 31. The rear end of the knob 7 is positioned at the rear side of the rocking handle, and the pressing part 31 on the control part 3 can be moved in different gear grooves 22 to switch by rotating the knob 7.
As shown in fig. 1 to 5, the stop rod 21 is sleeved with a spring 9, the spring 9 is propped between the front end of the adjusting part 2 and the inner wall of the tool rest 1, the compression distance of the spring 9 is 4-8 mm, and the stop rod 21 can push out broken cores of color lead or common lead forwards by pushing forward. In a normal cutting state, the spring 9 applies a backward acting force to the adjusting part 2, and the working mode of color lead or common lead is switched by adopting a mode that the top pressing part 31 is matched with the gear groove 22, so that a broken core is generated when pencil is cut; the knob 7 is pressed forward, so that the stop rod 21 moves forward for a distance of 4-8 mm, and the broken core is pushed away from the original position and can fall off the tool rest 1.
As shown in fig. 5, the rear end of the pressing portion 31 in the slot 71 is exposed on the rear surface of the crank body 8 as an adjustment position mark of the control member 3, and a gear mark is provided on the periphery of the knob 7 on the rear surface of the crank body 8, and is a boss 81 protruding from the rear surface of the crank body 8. The user can clearly see the current mode of cutting color lead or common lead at the pencil sharpener, and the mode of adjustment is switched very conveniently and intuitively.
The above description of the mounting structure of the handle of the pencil sharpener and the pencil sharpener provided by the invention applies specific examples to illustrate the principle and the implementation of the invention, and the above examples are only used for helping to understand the invention and the core idea. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (8)
1. The utility model provides a penknife rocking handle package assembly, includes the rocking handle body that has the installation cavity and has the rand of hole, rocking handle body and rand ultrasonic connection fixed, the inboard of rand be equipped with the screens face that supplies the first bellying chucking of knife rest tip, its characterized in that: the front side of the starting end of the clamping surface is provided with an elastic anti-back part, and the elastic anti-back part can deform outwards after being subjected to extrusion force from inside to outside, so that the first protruding part at the end part of the tool rest can pass through the elastic anti-back part to enter the clamping surface; when the extrusion force is lost, the elastic anti-return part protrudes inwards from the starting end of the clamping surface;
the clamping ring is provided with two parallel grooves, an elastic plastic sheet is formed by the two parallel grooves, and the elastic anti-back part is a second protruding part arranged at the inner side of the tail end of the elastic plastic sheet;
the inner wall of the cavity of the rocking handle body is provided with a third protruding part protruding radially, and the third protruding part is positioned at the tail end of the clamping surface of the clamping ring to serve as a limiting point of the first protruding part at the end part of the tool rest.
2. The assembling structure of a crank of a pencil sharpener of claim 1, wherein: the second protruding part is provided with a first inclined plane, the first inclined plane is gradually increased from the front end to the rear end, and the rear end of the first inclined plane is higher than the starting end of the Yu Kawei surface.
3. The assembling structure of a crank of a pencil sharpener of claim 1, wherein: the clamping surface is provided with a second inclined surface.
4. Rocking handle and knife rest mounting structure, its characterized in that: a crank assembly structure of a pencil sharpener of any one of claims 1-3;
the tool rest comprises a tool rest body with a mounting cavity and a clamping ring with an inner hole, wherein the tool rest body is fixedly connected with the clamping ring in an ultrasonic mode; when the extrusion force is eliminated, the elastic anti-return part protrudes inwards from the initial end of the clamping surface so as to prevent the first protruding part positioned on the clamping surface from moving out from the direction of the elastic anti-leg part.
5. The crank and tool holder mounting structure of claim 4, wherein: the clamping ring is provided with two parallel grooves, the elastic plastic sheet is formed by the two parallel grooves, and the elastic anti-back part is a second protruding part arranged at the inner side of the tail end of the elastic plastic sheet.
6. The crank and tool holder mounting structure of claim 4, wherein: the second protruding part is provided with a first inclined plane, the first inclined plane is gradually increased from the front end to the rear end, and the rear end of the first inclined plane is higher than the starting end of the Yu Kawei surface.
7. The crank and tool holder mounting structure of claim 4, wherein: the clamping surface is provided with a second inclined surface, and a first protruding part at the end part of the tool rest is clamped on the second inclined surface; the inner wall of the cavity of the rocking handle body is provided with a third protruding part protruding radially, and the third protruding part is positioned at the tail end of the clamping surface of the clamping ring to serve as a limiting point of the first protruding part at the end part of the tool rest.
8. Penknife, its characterized in that: a crank assembly structure for a pencil sharpener of any one of claims 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810575063.8A CN108501594B (en) | 2018-06-06 | 2018-06-06 | Assembling structure of rocking handle of pencil sharpener, mounting structure of rocking handle and knife rest and pencil sharpener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810575063.8A CN108501594B (en) | 2018-06-06 | 2018-06-06 | Assembling structure of rocking handle of pencil sharpener, mounting structure of rocking handle and knife rest and pencil sharpener |
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| Publication Number | Publication Date |
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| CN108501594A CN108501594A (en) | 2018-09-07 |
| CN108501594B true CN108501594B (en) | 2023-06-16 |
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| CN110450213A (en) * | 2019-08-14 | 2019-11-15 | 宁波市欧博日用品有限公司 | The coupling structure and shredder of Roller Tool and rocking handle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3673493B2 (en) * | 2001-11-22 | 2005-07-20 | 株式会社ケーティーエフ | Manual pencil sharpener |
| CN101614238B (en) * | 2008-06-27 | 2013-08-21 | 鸿富锦精密工业（深圳）有限公司 | Hinge structure |
| CN201736688U (en) * | 2010-04-28 | 2011-02-09 | 陈华耀 | Pencil sharpener capable of adjusting pencil point |
| CN104932059B (en) * | 2015-05-29 | 2017-03-29 | 中航光电科技股份有限公司 | The tail accessory and its anti-falling piece of adapter |
| TWM513133U (en) * | 2015-08-26 | 2015-12-01 | Pao Shen Entpr Co Ltd | Pencil sharpener structure with segmental adjustment cutting |
| CN107839391A (en) * | 2017-12-07 | 2018-03-27 | 义乌市鼎邦文体用品有限公司 | Penknife is shaken the hand mounting structure and penknife |
| CN208615593U (en) * | 2018-06-06 | 2019-03-19 | 义乌市鼎邦文体用品有限公司 | Penknife rocking handle package assembly and rocking handle and tool holder mounting structure and penknife |
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