CN107839390B - Direct-pushing two-gear nib thickness adjusting mechanism of pencil sharpener and pencil sharpener - Google Patents
Direct-pushing two-gear nib thickness adjusting mechanism of pencil sharpener and pencil sharpener Download PDFInfo
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- CN107839390B CN107839390B CN201711286308.7A CN201711286308A CN107839390B CN 107839390 B CN107839390 B CN 107839390B CN 201711286308 A CN201711286308 A CN 201711286308A CN 107839390 B CN107839390 B CN 107839390B
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- guide
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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
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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 direct-pushing two-gear nib thickness adjusting mechanism of a pencil sharpener and the pencil sharpener, wherein the structure between a button, a guide sleeve and a guide rod is skillfully matched, the button is pressed by a hand of a user, and the two positions of the guide rod in the axial direction, namely the position of the pencil nib in a first state is the thinner position of the pencil nib, are achieved by pressing the button; the position in the second state is the position when the pencil point is thicker, and the position that the push rod stretches into the knife rest limits the thickness of the pencil point after cutting, and the guide rod is fixed with the push rod capable of limiting the thickness of the pencil point, so that the two-gear requirement of the pencil point, namely thicker gear and thinner gear of the pencil point, is met in a mode of directly pushing the button.
Description
Technical Field
The invention relates to a nib thickness adjusting mechanism of a pencil sharpener, in particular to a direct-pushing two-gear nib thickness adjusting mechanism of the pencil sharpener and the pencil sharpener.
Background
The invention patent specification of China application number 201510200770.5 discloses a pencil lead tip thickness adjustable mechanism on a pencil sharpener, which comprises a sliding stop block on a knife rest, a rotary button on the rocker arm and a telescopic rod axially moving in the knife rest, wherein the other end of the telescopic rod is connected with the rotary button through threads, a spring is sleeved on the telescopic rod and is propped between the inner side of the rotary button and the end part of the knife rest, the rotary button is rotated, the telescopic rod slowly moves forward to push the sliding stop block to a pencil inlet, the rotary button is pressed inwards, and the telescopic rod rapidly moves forward to push the sliding stop block to the pencil inlet. The pen point thickness is adjusted by adopting a threaded connection mode, and the wood chips are removed by adopting a direct pushing mode.
The invention patent specification of China patent number 201610451378.2 discloses a pencil nib thickness adjustable mechanism, which discloses a sliding stop block, a telescopic rod, a knob, a limiting block and the like, wherein the limiting block is provided with a gear rib, a ring body is provided with a multi-stage step group, the outer end of the gear rib leans against the multi-stage step group, and the thickness of the pencil nib is adjusted in a knob rotating mode.
Disclosure of Invention
The invention aims to solve the technical problem of providing a straight pushing type nib thickness adjusting mechanism with two thick and thin gears and a pencil sharpener with the adjusting mechanism.
The technical scheme adopted for solving the technical problems is as follows: the direct-pushing two-gear nib thickness adjusting mechanism of the pencil sharpener comprises a guide sleeve fixed in the end part of the knife rest, a button which is arranged in the hand crank and can move axially and a guide rod fixedly connected with the push rod;
the inner surface of the guide sleeve is annularly provided with a plurality of first axial guide ribs, two sides of each first guide rib are respectively provided with a first guide groove and a plurality of second guide grooves, the first guide grooves penetrate through two ends of the first guide ribs, the rear ends of the second guide grooves are provided with flanges, the front ends of each first guide rib are provided with a first inclined plane,
the front end of the button is provided with a first through hole, the front end of the button is provided with a plurality of sharp angles along the ring shape, the outer side of the front end of the button is provided with a protruding part matched with the first guide groove, the protruding part is opposite to the center of the sharp angle,
the front end of the guide rod is provided with a second through hole, the outer surface of the front section of the guide rod is provided with a second guide rib extending axially, and the tail end of the second guide rib is provided with a second inclined plane; the inclination direction of the first inclined plane is consistent with the inclination direction of the second inclined plane;
the rear section of the push rod is inserted into and fixed in the second through hole of the guide rod, and the rear section of the guide rod is inserted into the first through hole of the button;
in the first state, the second guide rib of the guide rod is positioned in the first guide groove of the guide sleeve, the protruding part of the button is positioned in the first guide groove of the guide sleeve, and the protruding part of the button is positioned at the rear end of the second guide rib of the guide rod; the sharp angle on the button is propped against the second guide rib,
the button pushes the guide rod to move forwards in the guide sleeve, and when the second guide rib moves out of the first guide groove of the guide sleeve, the second guide rib on the guide rod rotates to the front side of the second guide groove of the guide sleeve due to the action of the sharp angle bevel edge on the second bevel edge of the second guide rib;
and simultaneously, applying a backward acting force on the guide rod, wherein a second guide rib on the guide rod moves in a second guide groove of the guide sleeve until the tail part of the second guide rib touches a flange on the second guide groove, and the second guide rib is in a second state.
The further preferable scheme of the invention is as follows: the flange in the second guide groove is provided with a third inclined plane which is matched with the second inclined plane of the second guide rib.
The further preferable scheme of the invention is as follows: the angle of sharp angle is the right angle, and the both sides of right angle are first right angle hypotenuse and second right angle hypotenuse, and under the first state, the sharp angle on the button is jacked in the intermediate position on second inclined plane.
The further preferable scheme of the invention is as follows: when the second guide rib moves out of the first guide groove of the guide sleeve, the first right-angle bevel edge of the sharp angle acts on the second bevel face of the guide rib, so that the second guide rib on the guide rod rotates to the front side of the second guide groove of the guide sleeve.
The further preferable scheme of the invention is as follows: a reset spring is arranged between the inner wall of the tool rest and the push rod, and when the push rod moves forwards, the reset spring can generate a backward acting force on the push rod.
The further preferable scheme of the invention is as follows: the push rod extends into the tool rest of the pencil sharpener, and the front end of the push rod is used for limiting the depth of the pencil point extending into the tool rest.
The further preferable scheme of the invention is as follows: the guide sleeve, the guide rod and the button are all made of plastic materials.
The further preferable scheme of the invention is as follows: the pencil sharpener comprises a straight-pushing two-gear nib thickness adjusting mechanism of the pencil sharpener.
Compared with the prior art, the pencil has the advantages that through ingenious matching of the structures among the button, the guide sleeve and the guide rod, the button is pressed by the hand of a user, and the two axial positions of the guide rod are achieved through pressing the button, namely, the position of the pencil point in the first state is the thinner position of the pencil point; the position in the second state is the position when the pencil point is thicker.
The push rod extends into the position of the knife rest to limit the thickness of the pencil point after cutting, and the guide rod is fixed with the push rod which can limit the thickness of the pencil point, so that the two-gear requirement of the pencil point, namely a thicker gear and a thinner gear of the pencil point, is met in a mode of directly pushing the button.
Drawings
FIG. 1 is a block diagram of a thickness adjustment mechanism of the present invention in a tool post;
FIG. 2 is an exploded view (one) of FIG. 1;
FIG. 3 is an exploded view (II) of FIG. 1;
FIG. 4 is an exploded view (I) of the thickness adjustment mechanism of the present invention;
FIG. 5 is an exploded view (II) of the thickness adjusting mechanism of the present invention;
FIG. 6 is an axial cross-sectional view of a guide sleeve of the present invention;
FIG. 7 is a radial cross-sectional view of a guide sleeve of the present invention;
fig. 8 is an inside expanded view of the guide sleeve of the present invention.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
The pencil sharpener comprises a shell, a knife rest 1 arranged in the shell, a hob and a handle 8 arranged on the knife rest 1, wherein the pencil which stretches into the knife rest 1 is cut by rotating the knife rest 1 and driving the hob to rotate by the handle, the depth of the pencil which stretches into the knife rest 1 is limited by a push rod 5, when the front end of the push rod 5 is positioned at the front, the pencil point of the cut pencil is thicker, when the front end of the push rod 5 is positioned at the rear, the pencil point of the cut pencil is thinner, and the pencil point of the pencil sharpener is roughly divided into two gears. Since the present invention is an improvement of the nib thickness adjusting mechanism, that is, the mechanism for controlling the movement of the push rod 5, other internal structures of the pencil sharpener can be referred to the specific structures described in the documents 201510200770.5 and 201610451378.2 which have been disclosed by the applicant.
The guide rod and the push rod are fixedly connected in an assembling mode.
As shown in fig. 1, 2 and 3, the direct-pushing two-gear nib thickness adjusting mechanism of the pencil sharpener comprises a guide sleeve 2 fixed in the end part of a knife rest 1, a button 4 installed in a hand crank 3 and capable of axially moving, and a guide rod 6 fixedly connected with a push rod 5;
as shown in fig. 4-8, the inner surface of the guide sleeve 2 is annularly provided with a plurality of first axial guide ribs 21, two sides of each first guide rib 21 are respectively provided with a first guide groove 22 and a plurality of second guide grooves 23, the first guide grooves 22 are communicated with two ends of the first guide ribs 21, the rear ends of the second guide grooves 23 are provided with flanges 24, the front ends of each first guide rib 21 are provided with a first inclined plane 25,
the front end of the button 4 is provided with a first through hole 41, the front end of the button 4 is provided with a plurality of sharp angles 42 along the ring shape, the outer side of the front end of the button 4 is provided with a protruding part 43 matched with the first guide groove 22, the protruding part 43 faces the center of the sharp angle 42,
the front end of the guide rod 6 is provided with a second through hole 61, the outer surface of the front section of the guide rod 6 is provided with a second guide rib 62 extending axially, and the tail end of the second guide rib 62 is provided with a second inclined plane 63; the inclination direction of the first inclined surface 25 coincides with the inclination direction of the second inclined surface 63;
the rear section 51 of the push rod 5 is inserted and fixed in the second through hole 61 of the guide rod 6, and the rear section 64 of the guide rod 6 is inserted into the first through hole 41 of the button 4;
in the first state, namely, the button, the guide rod and the push rod are positioned at the rear end position, namely, the pencil sharpener is positioned at the rough gear position of the pencil point, the second guide rib 62 of the guide rod 6 is positioned in the first guide groove 22 of the guide sleeve 2, the protruding part 43 of the button 4 is positioned in the first guide groove 22 of the guide sleeve 2, and the protruding part 43 of the button 4 is positioned at the rear end of the second guide rib 62 of the guide rod 6; the sharp corner 42 of the button 4 abuts the second guide rib 62,
the button 4 pushes the guide rod 6 to move forwards in the guide sleeve 2, and when the second guide rib 62 moves out of the first guide groove 22 of the guide sleeve 2, the second guide rib 62 on the guide rod 6 rotates to the front side of the second guide groove 23 of the guide sleeve 2 due to the action of the inclined edge of the sharp angle 42 on the second inclined surface 63 of the second guide rib 62;
simultaneously, a backward acting force is applied to the guide rod 6, the second guide rib 62 on the guide rod 6 moves in the second guide groove 23 of the guide sleeve 2 until the tail part of the second guide rib 62 touches the flange 24 on the second guide groove 23, and the second state is the second state, and at the moment, the button, the guide rod and the push rod are positioned at the front end position, namely, the pencil sharpener is positioned at the thinner gear position of the pencil point.
The flange 24 in the second guide groove 23 has a third inclined surface 241 which coincides with the second inclined surface 63 of the second guide rib 62. The ribs 24 in the guide sleeve 2 block the second guide rib 62 from further rearward movement, thereby limiting the position of the guide bar 6. At this time, the guide rod and the push rod are positioned at the front end, namely, the pencil sharpener is positioned at the thinner position of the pencil point.
The sharp angle 42 is a right angle, and the right angle is formed by a first right angle bevel 421 and a second right angle bevel 422, and in the first state, the sharp angle 42 on the button 4 is propped against the middle position of the second bevel 63.
When the second guide rib 62 moves out of the first guide groove 22 of the guide sleeve 2, the action of the first right-angle bevel 421 of the sharp corner 42 on the second inclined surface 63 of the second guide rib 62 causes the second guide rib 62 on the guide rod 6 to rotate to the front side of the second guide groove 23 of the guide sleeve 2.
Fig. 6 to 8 show the internal detailed structure of the guide sleeve 2, the outer ring of the guide sleeve 2 is fixed on the tool rest 1, and the internal guide ribs 21 and the guide grooves 22 and 23 of the guide sleeve 2 are matched with the button 4 and the second guide ribs 62 on the guide rod 6. As shown in fig. 8, which is an internal development view of the guide sleeve, when the second guide rib on the guide rod is retracted to the L1 position of fig. 8, the pencil sharpener is in a fine gear, and when the second guide rib on the guide rod is retracted to the L2 position of fig. 8, the pencil sharpener is in a coarse gear. As shown in fig. 1-3, a return spring 7 is provided between the inner wall of the tool holder 1 and the push rod 5, and when the push rod 5 moves forward, the return spring 7 generates a rearward force on the push rod 5. The push rod 5 is inserted into the holder 1 of the pencil sharpener, and the front end of the push rod 5 is used for limiting the depth of the pencil point inserted into the holder 1. The guide sleeve 2, the guide rod 6 and the button 4 are all made of plastic materials.
The invention has been described in detail with reference to the straight-pushing two-stage nib thickness adjusting mechanism of the pencil sharpener and the pencil sharpener, and specific examples are applied to the principle and implementation of the invention, and the description of the above examples is only used to help understand the invention and 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. Direct-pushing two-gear nib thickness adjusting mechanism of pencil sharpener, characterized in that: comprises a guide sleeve fixed in the end part of the knife rest, a button which is arranged in the hand crank and can move axially, and a guide rod fixedly connected with the push rod;
the inner surface of the guide sleeve is annularly provided with a plurality of first axial guide ribs, two sides of each first guide rib are respectively provided with a first guide groove and a plurality of second guide grooves, the first guide grooves penetrate through two ends of the first guide ribs, the rear ends of the second guide grooves are provided with flanges, the front ends of each first guide rib are provided with a first inclined plane,
the front end of the button is provided with a first through hole, the front end of the button is provided with a plurality of sharp angles along the ring shape, the outer side of the front end of the button is provided with a protruding part matched with the first guide groove, the protruding part is opposite to the center of the sharp angle,
the front end of the guide rod is provided with a second through hole, the outer surface of the front section of the guide rod is provided with a second guide rib extending axially, and the tail end of the second guide rib is provided with a second inclined plane; the inclination direction of the first inclined plane is consistent with the inclination direction of the second inclined plane;
the rear section of the push rod is inserted into and fixed in the second through hole of the guide rod, and the rear section of the guide rod is inserted into the first through hole of the button;
in the first state, the second guide rib of the guide rod is positioned in the first guide groove of the guide sleeve, the protruding part of the button is positioned in the first guide groove of the guide sleeve, and the protruding part of the button is positioned at the rear end of the second guide rib of the guide rod; the sharp angle on the button is propped against the second guide rib,
the button pushes the guide rod to move forwards in the guide sleeve, and when the second guide rib moves out of the first guide groove of the guide sleeve, the second guide rib on the guide rod rotates to the front side of the second guide groove of the guide sleeve due to the action of the sharp angle bevel edge on the second bevel edge of the second guide rib;
and simultaneously, applying a backward acting force on the guide rod, wherein a second guide rib on the guide rod moves in a second guide groove of the guide sleeve until the tail part of the second guide rib touches a flange on the second guide groove, and the second guide rib is in a second state.
2. The direct-pushing two-stage nib thickness adjusting mechanism of a pencil sharpener of claim 1, wherein: the flange in the second guide groove is provided with a third inclined plane which is matched with the second inclined plane of the second guide rib.
3. The direct-pushing two-stage nib thickness adjusting mechanism of a pencil sharpener of claim 1, wherein: the angle of sharp angle is the right angle, and the both sides of right angle are first right angle hypotenuse and second right angle hypotenuse, and under the first state, the sharp angle on the button is jacked in the intermediate position on second inclined plane.
4. The direct-pushing two-stage nib thickness adjusting mechanism of a pencil sharpener of claim 3, wherein: when the second guide rib moves out of the first guide groove of the guide sleeve, the first right-angle bevel edge of the sharp angle acts on the second bevel face of the guide rib, so that the second guide rib on the guide rod rotates to the front side of the second guide groove of the guide sleeve.
5. The direct-pushing two-stage nib thickness adjusting mechanism of a pencil sharpener of claim 1, wherein: a reset spring is arranged between the inner wall of the tool rest and the push rod, and when the push rod moves forwards, the reset spring can generate a backward acting force on the push rod.
6. The direct-pushing two-stage nib thickness adjusting mechanism of a pencil sharpener of claim 1, wherein: the push rod extends into the tool rest of the pencil sharpener, and the front end of the push rod is used for limiting the depth of the pencil point extending into the tool rest.
7. The direct-pushing two-stage nib thickness adjusting mechanism of a pencil sharpener of claim 1, wherein: the guide sleeve, the guide rod and the button are all made of plastic materials.
8. Penknife, its characterized in that: a straight push two-stage nib thickness adjusting mechanism comprising the pencil sharpener of any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711286308.7A CN107839390B (en) | 2017-12-07 | 2017-12-07 | Direct-pushing two-gear nib thickness adjusting mechanism of pencil sharpener and pencil sharpener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711286308.7A CN107839390B (en) | 2017-12-07 | 2017-12-07 | Direct-pushing two-gear nib thickness adjusting mechanism of pencil sharpener and pencil sharpener |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107839390A CN107839390A (en) | 2018-03-27 |
| CN107839390B true CN107839390B (en) | 2023-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711286308.7A Active CN107839390B (en) | 2017-12-07 | 2017-12-07 | Direct-pushing two-gear nib thickness adjusting mechanism of pencil sharpener and pencil sharpener |
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| CN (1) | CN107839390B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111231553A (en) * | 2020-03-26 | 2020-06-05 | 宁波天虹文具有限公司 | Adjusting component of electric pencil sharpener |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3673493B2 (en) * | 2001-11-22 | 2005-07-20 | 株式会社ケーティーエフ | Manual pencil sharpener |
| JP3899113B1 (en) * | 2006-04-27 | 2007-03-28 | 株式会社ケーティーエフ | Electric pencil sharpener |
| CN201610030U (en) * | 2009-11-06 | 2010-10-20 | 福建新代实业有限公司 | Adjustable hob assembly of pencil sharpener |
| CN104163057A (en) * | 2014-07-25 | 2014-11-26 | 衢州启创专利技术推广有限公司 | Elastic telescopic rod |
| CN105922797B (en) * | 2016-06-20 | 2017-09-19 | 义乌市鼎邦文体用品有限公司 | Pencil-lead point thickness adjustable mechanism |
| CN208343778U (en) * | 2017-12-07 | 2019-01-08 | 义乌市鼎邦文体用品有限公司 | Penknife directly pushes away two-level pen tip thickness regulating mechanism and penknife |
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2017
- 2017-12-07 CN CN201711286308.7A patent/CN107839390B/en active Active
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| CN107839390A (en) | 2018-03-27 |
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