CN202879072U - Pencil sharpener - Google Patents
Pencil sharpener Download PDFInfo
- Publication number
- CN202879072U CN202879072U CN 201220586721 CN201220586721U CN202879072U CN 202879072 U CN202879072 U CN 202879072U CN 201220586721 CN201220586721 CN 201220586721 CN 201220586721 U CN201220586721 U CN 201220586721U CN 202879072 U CN202879072 U CN 202879072U
- Authority
- CN
- China
- Prior art keywords
- penknife
- lock
- pencil sharpener
- pencil
- push rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a pencil sharpener which comprises a pencil sharpener outer shell. A rotation cover is arranged at one end of the pencil sharpener outer shell, a rapid-cutting mechanism is arranged in the rotation cover, and a rotation shaft is arranged at the center of the rapidly-cutting mechanism. One end of the rotation shaft is arranged in the rapidly-cutting mechanism, and the other end of the rotation shaft is provided with an anti-reverse mechanism. The anti-reverse mechanism is connected with a feeding mechanism of a pencil sharpening cutter through a transmission shaft, and the pencil sharpening cutter is arranged at the front end of the feeding mechanism of the pencil sharpening cutter. A material storing groove is arranged in the pencil sharpener outer shell, the front end of the pencil sharpener is arranged in the material storing groove, a reset spring is arranged in the material storing groove, and the front end of the spring abuts against the inner wall of the front end of the material storing groove. A pencil locking button is arranged on the upper portion of the pencil sharpener outer shell through an elastic arm, one end of the pencil locking button is connected to the feeding mechanism of the pencil sharpening cutter, and the other end of the pencil locking button is provided with a locking arm which is matched with a pencil locking mechanism arranged at one end of the pencil sharpener outer shell. The pencil sharpener is low in manufacture cost, convenient to use, and capable of improving cutting speed and reducing fatigue in cutting.
Description
Technical field
The utility model relates to the penknife technical field, refers to especially a kind of penknife.
Background technology
Traditional penknife is divided into two large classes: hob type penknife and pencil sharpener formula penknife.
The course of work of above-mentioned two kinds of penknifes is roughly following a few step:
1, panel is pulled out forward;
2, press the pencil locking press button;
3, pencil is filled in cut a hole;
4, unclamp pencil pencil locking press button and clamp pencil;
5, shake swing arm, in the process of shaking stuck point is flicked, under the effect of spring force, panel drives pencil and sends to hobboing cutter or pencil sharpener;
6, rocking arm drives hobboing cutter or pencil sharpener rotation, thereby reaches the purpose that cuts pencil;
7, cut complete after, press the pencil locking press button, take out pencil.
These two kinds traditional penknife manufacturing costs are all higher, and it is lower to cut efficient, and are easily tired.
The utility model content
Technical problem to be solved in the utility model is: a kind of low cost of manufacture is provided, cut efficient high penknife.
For addressing the above problem, the technical solution adopted in the utility model is: a kind of penknife, comprise the penknife shell, penknife shell one end is provided with swivelling cover, swivelling cover inside be provided with match with swivelling cover cut soon mechanism, cut soon the mechanism center and be provided with spool, spool one end is arranged on to be cut in the mechanism soon, the other end is provided with anti-reverse mechanism, and anti-reverse mechanism is connected with the pencil sharpener propulsive mechanism by power transmission shaft, and pencil sharpener propulsive mechanism front end is provided with pencil sharpener; The penknife enclosure is provided with stock chest, and the pencil sharpener front end is arranged in the stock chest, is provided with back-moving spring in the stock chest, and the front end of back-moving spring and the front inner wall of stock chest are inconsistent; The penknife shell upper also is provided with the lock pen button, and lock pen button one end is connected to the pencil sharpener propulsive mechanism by elastic arm, and its other end is provided with lock arm, and lock arm matches with a lock mechanism that is arranged on penknife shell one end.
The described mechanism of cutting soon, comprise the central gear concentric with swivelling cover, described spool one end is arranged in the central gear, and described swivelling cover inwall is provided with a circle internal tooth, be provided with idle pulley between central gear and the swivelling cover, idle pulley is meshed with internal tooth and the central gear of swivelling cover inwall respectively.
The internal tooth number of described swivelling cover inwall is 30, and the number of teeth of central gear is 10, and the number of teeth of idle pulley is 10.
Described anti-reverse mechanism, comprise the drive that is connected with power transmission shaft, the drive outside is provided with an elastic arm at least, the drive outer setting has the moving runner mutually concentric with drive, moving runner is connected with spool one end, and the moving runner inner ring is along being arranged circumferentially several teeth, and tooth is along unidirectional array, the outer surface of each tooth is made of an arc surface and a plane, and the elastic arm outer end is arranged in the teeth groove of adjacent teeth.
Described drive arranged outside has two elastic arms, and two elastic arms are about the drive Central Symmetry.
Described pencil sharpener propulsive mechanism, comprise the push rod that is arranged in the penknife shell, the central axis of push rod and stock chest is located along the same line, the front end of push rod is provided with pencil sharpener, the outer setting of push rod has external screw thread, the position corresponding with push rod at the penknife outer casing inner wall is provided with internal thread, and internal thread is meshed with external screw thread, and push rod is connected with rotating power transmission shaft.
Described push rod inside is provided with axis hole, and power transmission shaft is arranged in the axis hole, and with push rod shaft to locking.
A described lock mechanism, the lock pen circle and the lockplate that comprise the elastically deformable that is arranged on the penknife shell, the middle part of lock pen circle is provided with a lock hole, in lock a hole and the penknife shell to cut a hole mutually concentric, the outer setting of lock pen circle has upper retainer ring and lower retainer ring, be respectively arranged with fixing hole in upper retainer ring and the lower retainer ring, position corresponding with fixing hole on the penknife shell is provided with protuberance, and the protuberance correspondence is arranged in the fixing hole; Described lock arm is positioned at the lockplate enclosure, and lock arm is inboard inconsistent with the lock pen circle outside, is provided with locking mouthful on the lock arm, and locking is mouthful wide outside and narrow inside, and the narrowest place distance of locking mouthful is less than a lock loop diameter; Described lockplate is arranged between lock pen circle and the penknife outer casing inner wall, the circular arc of the outer rim of lockplate for matching with the penknife outer casing inner wall, and the inner edge of lockplate matches with the outer wall of lock pen circle and lock arm.
The beneficial effects of the utility model are: above-mentioned penknife, it cuts the principle that mechanism has utilized concentric change-speed gearing soon, the interior number of teeth of swivelling cover inwall is set to 3 times of the central gear number of teeth, central gear rotates three circles so that swivelling cover turns around, improved the speed that cuts of penknife, guaranteed that also swivelling cover and pencil sharpener part is concentric so that during use more smoothly; Its anti-reverse mechanism keeps pencil sharpener motionless so that drive pencil sharpener during the moving runner forward rotation and rotate during backward rotation, solved the Efficiency Decreasing that causes because of structural limitations; Its pencil sharpener propulsive mechanism utilizes the stability of curved-line thread path, so that propulsive force is steady, change can not appear because of stroke, solved tired problem, distribution velocity of rotation and the fltting speed of science have promoted the stability that cuts and the service life of blade, so that the penknife manufacturing cost reduces, use conveniently, improved the speed of cutting, reduced the fatigue strength that cuts.
Description of drawings
Fig. 1 is a kind of profile of penknife.
Fig. 2 is the structural representation of cutting soon mechanism in the penknife.
Fig. 3 is the structural representation of the anti-reverse mechanism in the penknife.
Fig. 4 is the structural representation of the pencil sharpener propulsive mechanism in the penknife.
Fig. 5 is the structural representation of the lock mechanism in the penknife.
Among the figure: 1, the penknife shell, 2, swivelling cover, 3, cut soon mechanism, 4, spool, 5, anti-reverse mechanism, 6, power transmission shaft, 7, the pencil sharpener propulsive mechanism, 8, pencil sharpener, 9, stock chest, 10, back-moving spring, 11, the lock pen button, 12, elastic arm, 13, lock arm, 14, a lock mechanism, 15, central gear, 16, idle pulley, 17, drive, 18, elastic arm, 19, moving runner, 20, push rod, 21, external screw thread, 22, internal thread, 23, axis hole, 24, lock pen circle, 25, lockplate, 26, a lock hole, 27, cut a hole, 28, upper retainer ring, 29, lower retainer ring, 30, protuberance, 31, the locking mouth.
The specific embodiment
Below by specific embodiment a kind of penknife of the utility model is described in further detail.
As shown in Figure 1, a kind of penknife, comprise penknife shell 1, penknife shell 1 one ends are provided with swivelling cover 2, swivelling cover 2 inside be provided with match with swivelling cover 2 cut soon mechanism 3, cut soon mechanism 3 centers and be provided with spool 4, spool 4 one ends are arranged on to be cut in the mechanism 3 soon, the other end is provided with anti-reverse mechanism 5, and anti-reverse mechanism 5 is connected with pencil sharpener propulsive mechanism 7 by power transmission shaft 6, and pencil sharpener propulsive mechanism 7 front ends are provided with pencil sharpener 8; Penknife shell 1 inside is provided with stock chest 9, and pencil sharpener 8 front ends are arranged in the stock chest 9, are provided with back-moving spring 10 in the stock chest 9, and the front inner wall of the front end of back-moving spring 10 and stock chest 9 is inconsistent; Penknife shell 1 top also is provided with lock pen button 11, and lock pen button 11 1 ends are connected to pencil sharpener propulsive mechanism 7 by elastic arm 12, and its other end is provided with lock arm 13, and lock arm 13 matches with a lock mechanism 14 that is arranged on penknife shell 1 one ends.
The described mechanism 3 of cutting soon as shown in Figure 2, comprise the central gear 15 concentric with swivelling cover 2, spool 4 one ends are arranged in the central gear 15, swivelling cover 2 inwalls are provided with a circle internal tooth, be provided with idle pulley 16 between central gear 15 and the swivelling cover 2, idle pulley 16 is meshed with internal tooth and the central gear 15 of swivelling cover 2 inwalls respectively.
In the present embodiment, the internal tooth number of swivelling cover 2 inwalls is 30, and the number of teeth of central gear 15 is 10, and the number of teeth of idle pulley 16 is 10.Certainly, also can adjust according to actual needs the number of the tooth of all parts, to reach the better effect that cuts, the variation of this tooth number all belongs to protection category of the present utility model.
Described anti-reverse mechanism 5 as shown in Figure 3, comprise the drive 17 that is connected with power transmission shaft 6, drive 17 outsides are provided with an elastic arm 18 at least, drive 17 outer setting have the moving runner 19 mutually concentric with drive 17, moving runner 19 is connected with spool 4 one ends, and moving runner 19 inner rings are along being arranged circumferentially several teeth, and tooth is along unidirectional array, the outer surface of each tooth is made of an arc surface and a plane, and elastic arm 18 outer ends are arranged in the teeth groove of adjacent teeth.
Described drive 17 arranged outside have 18, two elastic arms 18 of two elastic arms about drive 17 Central Symmetries.
Described pencil sharpener propulsive mechanism 7 as shown in Figure 4, comprise the push rod 20 that is arranged in the penknife shell 1, the central axis of push rod 20 and stock chest 9 is located along the same line, the front end of push rod 20 is provided with pencil sharpener 8, the outer setting of push rod 20 has external screw thread 21, be provided with internal thread 22 in penknife shell 1 inwall and push rod 20 corresponding positions, internal thread 22 is meshed with external screw thread 21, and push rod 20 is connected with rotating power transmission shaft 6.
Described push rod 20 inside are provided with axis hole 23, and power transmission shaft 6 is arranged in the axis hole 23, and axially lock with push rod 20.
A described lock mechanism 14 as shown in Figure 5, the lock pen circle 24 and the lockplate 25 that comprise the elastically deformable that is arranged on the penknife shell 1, the middle part of lock pen circle 24 is provided with a lock hole 26, in lock a hole 26 and the penknife shell 1 to cut a hole 27 mutually concentric, the outer setting of lock pen circle 24 has upper retainer ring 28 and lower retainer ring 29, be respectively arranged with fixing hole in upper retainer ring 28 and the lower retainer ring 29, the position corresponding with fixing hole is provided with protuberance 30 on penknife shell 1, and protuberance 30 correspondences are arranged in the fixing hole; Lock arm 13 is positioned at lockplate 25 enclosure, and lock arm 13 inboards and lock circle 24 outside are inconsistent, are provided with on the lock arm 13 and lock mouth 31, and are wide outside and narrow inside, and the narrowest place distance of locking mouth 31 is less than locking circle 24 diameter; Lockplate 25 is arranged between lock pen circle 24 and penknife shell 1 inwall, the circular arc of the outer rim of lockplate 25 for matching with penknife shell 1 inwall, and the inner edge of lockplate 25 matches with the outer wall of lock pen circle 24 and lock arm 13.
During use, press lock pen button 11, move on the lock arm 13, compressing lock pen circle 24, so that lock pen circle 24 produces deformation, pencil in the compressing circle, pencil one end is fixed, simultaneously, move on the elastic arm 12, fit with the external screw thread 21 on the push rod 20 so that be arranged on the internal thread 22 of penknife shell 1 inwall.Come back rotation swivelling cover 2, swivelling cover 2 drives idle pulley 16 and rotates when rotating, idle pulley 16 drive central gears 15 and the spool 4 that is connected on the central gear 15 rotate, because the interior number of teeth of swivelling cover 2 inwalls is three times of central gear 15 numbers of teeth, central gear 15 rotates three circles so swivelling cover 2 turns around, and reaches the purpose that cuts fast with this.Simultaneously, the rotation of spool 4 drives moving runner 19 and rotates, when moving runner 19 forward, drive drive 17 forwards, when moving runner 19 counter-rotating, elastic arm 18 is compressed, drive 17 can not and then rotate, this has just solved the Efficiency Decreasing that causes because of structural limitations, and skips a unidirectional tooth when elastic arm 18 " clatter " one is just arranged, and " clatter clatter " sound continuous during fast rotational is so that the uninteresting process that cuts has recreational.Simultaneously, the power transmission shaft 6 that rotarily drives of drive 17 rotates, thereby driving push rod 20 rotates, because the helicitic texture of push rod 20 outsides and penknife shell 1 inwall, so that push rod 20 moves forward when rotating, move forward with helical trajectory and compress back-moving spring 10 in the stock chest 9 thereby drive pencil sharpener 8, reach the purpose that cuts, cut simultaneously remaining waste material and can stay in the stock chest 9.
When pencil sharpener 8 can't rotate, cut and finish, at this moment, back-moving spring 10 in the stock chest 9 is compressed to the limit, unclamp lock pen button 11, lock arm 13 and elastic arm 12 move down simultaneously, and push rod 20 loses constraint, under the elastic force effect of the back-moving spring 10 in stock chest 9, need not special operation, each parts automatic rebounding playback, simultaneously, lock pen circle 24 is because rebound effect returns to original state, and pencil just can take out smoothly.
In cutting the process of pencil, pencil one end enters pencil sharpener 8, under the conical wall guiding of pencil sharpener 8, the constraint of pencil one end is owing to there is the circular cone guiding, the whole process that cuts guarantees that this puts not disalignment, it is fixing that the other end of pencil is locked a mechanism 14, and simultaneously, pencil sharpener 8 two ends in cutting process have track restrained, also guarantee not disalignment direction of pencil sharpener 8, guaranteed the concentricity that cuts with this.And pencil sharpener 8 moves forward along curved-line thread path, and propulsive force is steady, change can not occur because of stroke, has solved tired problem, scientifically distributes velocity of rotation and fltting speed, has promoted the stability that cuts and the service life of blade.
The above embodiments are principle and the effect thereof of illustrative the invention only, and the embodiment of part utilization, but not is used for restriction the utility model; Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model creation design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (8)
1. penknife, it is characterized in that: comprise the penknife shell, penknife shell one end is provided with swivelling cover, swivelling cover inside be provided with match with swivelling cover cut soon mechanism, cut soon the mechanism center and be provided with spool, spool one end is arranged on to be cut in the mechanism soon, and the other end is provided with anti-reverse mechanism, anti-reverse mechanism is connected with the pencil sharpener propulsive mechanism by power transmission shaft, and pencil sharpener propulsive mechanism front end is provided with pencil sharpener; The penknife enclosure is provided with stock chest, and the pencil sharpener front end is arranged in the stock chest, is provided with back-moving spring in the stock chest, and the front end of back-moving spring and the front inner wall of stock chest are inconsistent; The penknife shell upper also is provided with the lock pen button, and lock pen button one end is connected to the pencil sharpener propulsive mechanism by elastic arm, and its other end is provided with lock arm, and lock arm matches with a lock mechanism that is arranged on penknife shell one end.
2. a kind of penknife according to claim 1, it is characterized in that: the described mechanism of cutting soon, comprise the central gear concentric with swivelling cover, described spool one end is arranged in the central gear, described swivelling cover inwall is provided with a circle internal tooth, be provided with idle pulley between central gear and the swivelling cover, idle pulley is meshed with internal tooth and the central gear of swivelling cover inwall respectively.
3. the mechanism of cutting soon according to claim 2, it is characterized in that: the internal tooth number of described swivelling cover inwall is 30, and the number of teeth of central gear is 10, and the number of teeth of idle pulley is 10.
4. a kind of penknife according to claim 1, it is characterized in that: described anti-reverse mechanism, comprise the drive that is connected with power transmission shaft, the drive outside is provided with an elastic arm at least, and the drive outer setting has the moving runner mutually concentric with drive, and moving runner is connected with spool one end, the moving runner inner ring is along being arranged circumferentially several teeth, tooth is along unidirectional array, and the outer surface of each tooth is made of an arc surface and a plane, and the elastic arm outer end is arranged in the teeth groove of adjacent teeth.
5. anti-reverse mechanism according to claim 4, it is characterized in that: described drive arranged outside has two elastic arms, and two elastic arms are about the drive Central Symmetry.
6. a kind of penknife according to claim 1, it is characterized in that: described pencil sharpener propulsive mechanism, comprise the push rod that is arranged in the penknife shell, the central axis of push rod and stock chest is located along the same line, the front end of push rod is provided with pencil sharpener, and the outer setting of push rod has external screw thread, and the position corresponding with push rod at the penknife outer casing inner wall is provided with internal thread, internal thread is meshed with external screw thread, and push rod is connected with rotating power transmission shaft.
7. pencil sharpener propulsive mechanism according to claim 6, it is characterized in that: described push rod inside is provided with axis hole, and power transmission shaft is arranged in the axis hole, and with push rod shaft to locking.
8. a kind of penknife according to claim 1, it is characterized in that: a described lock mechanism, the lock pen circle and the lockplate that comprise the elastically deformable that is arranged on the penknife shell, the middle part of lock pen circle is provided with a lock hole, in lock a hole and the penknife shell to cut a hole mutually concentric, the outer setting of lock pen circle has upper retainer ring and lower retainer ring, be respectively arranged with fixing hole in upper retainer ring and the lower retainer ring, position corresponding with fixing hole on the penknife shell is provided with protuberance, and the protuberance correspondence is arranged in the fixing hole; Described lock arm is positioned at the lockplate enclosure, and lock arm is inboard inconsistent with the lock pen circle outside, is provided with locking mouthful on the lock arm, and locking is mouthful wide outside and narrow inside, and the narrowest place distance of locking mouthful is less than a lock loop diameter; Described lockplate is arranged between lock pen circle and the penknife outer casing inner wall, the circular arc of the outer rim of lockplate for matching with the penknife outer casing inner wall, and the inner edge of lockplate matches with the outer wall of lock pen circle and lock arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220586721 CN202879072U (en) | 2012-11-09 | 2012-11-09 | Pencil sharpener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220586721 CN202879072U (en) | 2012-11-09 | 2012-11-09 | Pencil sharpener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202879072U true CN202879072U (en) | 2013-04-17 |
Family
ID=48070532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220586721 Withdrawn - After Issue CN202879072U (en) | 2012-11-09 | 2012-11-09 | Pencil sharpener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202879072U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963189A (en) * | 2012-11-09 | 2013-03-13 | 顺德工业(江苏)有限公司 | Pencil sharpening machine |
| CN103950332A (en) * | 2014-04-21 | 2014-07-30 | 上海理工大学 | Pencil sharpener |
| CN104290507A (en) * | 2014-10-21 | 2015-01-21 | 顺德工业(江苏)有限公司 | Pencil sharpener transmission structure |
| CN104290508A (en) * | 2014-10-21 | 2015-01-21 | 顺德工业(江苏)有限公司 | Pencil sharpener |
| CN106585233A (en) * | 2016-10-25 | 2017-04-26 | 林依辰 | Pencil disinfecting and sharpening integrated device |
| CN113580821A (en) * | 2021-09-13 | 2021-11-02 | 义乌市鼎邦文体用品有限公司 | Electric pencil sharpener |
-
2012
- 2012-11-09 CN CN 201220586721 patent/CN202879072U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963189A (en) * | 2012-11-09 | 2013-03-13 | 顺德工业(江苏)有限公司 | Pencil sharpening machine |
| CN103950332A (en) * | 2014-04-21 | 2014-07-30 | 上海理工大学 | Pencil sharpener |
| CN104290507A (en) * | 2014-10-21 | 2015-01-21 | 顺德工业(江苏)有限公司 | Pencil sharpener transmission structure |
| CN104290508A (en) * | 2014-10-21 | 2015-01-21 | 顺德工业(江苏)有限公司 | Pencil sharpener |
| CN106585233A (en) * | 2016-10-25 | 2017-04-26 | 林依辰 | Pencil disinfecting and sharpening integrated device |
| CN106585233B (en) * | 2016-10-25 | 2018-05-29 | 惠安县万物电子商务有限责任公司 | A kind of pencil disinfection volume cuts integrated apparatus |
| CN113580821A (en) * | 2021-09-13 | 2021-11-02 | 义乌市鼎邦文体用品有限公司 | Electric pencil sharpener |
| CN113580821B (en) * | 2021-09-13 | 2022-10-14 | 义乌市鼎邦文体用品有限公司 | Electric pencil sharpener |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202879072U (en) | Pencil sharpener | |
| CN101972104B (en) | Fruit juice extractor | |
| CN210172715U (en) | Deburring device of gear hobbing machine | |
| JP3205368U (en) | Electric pencil sharpener | |
| CN102963189B (en) | Pencil sharpening machine | |
| CN208710183U (en) | A kind of mute upper limb artificial hand structure of novel myoelectricity | |
| CN212555629U (en) | Spiral spring type pencil sharpener | |
| CN204057152U (en) | A kind of transposition sucker wheel | |
| CN203269213U (en) | Fast bobbin locking device of yarn bobbin | |
| CN209437035U (en) | Multifunction sand machine drawing | |
| CN105690577A (en) | Punching device of spherical jade | |
| CN202879079U (en) | Pencil sharpener pushing mechanism in pencil sharpening device | |
| CN203801540U (en) | Fishing reel clutching mechanism with function of automatic reset | |
| CN203956700U (en) | The upper press cover of wood pearl polishing machine | |
| CN203238434U (en) | Hand wheel on sewing machine | |
| CN111845170A (en) | Spiral spring type pencil sharpener | |
| CN204387214U (en) | A kind of novel particle machine | |
| CN202879074U (en) | Fast sharpening mechanism of pencil sharpener | |
| CN203371061U (en) | Clamping jaw structure of bearing turning cutter | |
| CN202879075U (en) | Anti-reversing mechanism in pencil sharpening device | |
| CN108942766A (en) | A kind of manual bidirectional accelerates screwdriver from shift | |
| CN219360714U (en) | Correction tape with replaceable core | |
| CN202971812U (en) | Driven three-speed gear | |
| CN208895982U (en) | A kind of manual shift screwdriver | |
| CN214647213U (en) | Hand-pulling pencil sharpener |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130417 Effective date of abandoning: 20140924 |
|
| RGAV | Abandon patent right to avoid regrant |