CN110126520B - Automatic pen feeding and retreating mechanism of pencil sharpening device - Google Patents
Automatic pen feeding and retreating mechanism of pencil sharpening device Download PDFInfo
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- CN110126520B CN110126520B CN201910473727.4A CN201910473727A CN110126520B CN 110126520 B CN110126520 B CN 110126520B CN 201910473727 A CN201910473727 A CN 201910473727A CN 110126520 B CN110126520 B CN 110126520B
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- rotating shaft
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- 230000007246 mechanism Effects 0.000 title claims abstract description 29
- 230000000712 assembly Effects 0.000 claims abstract description 22
- 238000000429 assembly Methods 0.000 claims abstract description 22
- 238000005192 partition Methods 0.000 claims description 69
- 230000005540 biological transmission Effects 0.000 claims description 26
- 230000009471 action Effects 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 description 5
- 230000001360 synchronised effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000020347 spindle assembly Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- B43L23/002—Sharpeners for pencils or leads with continuous conveying means for the pencil
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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
Abstract
The invention provides an automatic pen feeding and withdrawing mechanism of a pencil sharpening device, and belongs to the technical field of machinery. It has solved current automatic advance and has moved back the poor problem of pen mechanism stability, and structure is unreasonable. The pen-shaped rotary driving device comprises a support, a supporting spring, two rotating shaft assemblies and a driving disc, wherein the rotating shaft assemblies are connected to the outer ends of the support in parallel, a clamping opening is formed between the two rotating shaft assemblies, a pen passing hole is formed in the center of the driving disc in a penetrating mode, a through hole is formed in the support, a driving disc is arranged in the through hole, a yielding hole which is opposite to the pen passing hole in a communicating mode is formed in the driving disc in a penetrating mode, the driving disc and the driving disc are circumferentially fixed, the driving disc can move along the axis direction of the pen passing hole relative to the driving disc, the supporting spring is arranged between the driving disc and the driving disc, two ends of the supporting spring are respectively abutted to the outer end face of the driving disc and the inner end face of the driving disc, and a connecting part is arranged on the inner end face of the driving disc. It has the advantages of high stability of advancing and retreating pen, reasonable structure, small pencil sharpening resistance, etc.
Description
Technical Field
The invention belongs to the technical field of pencil sharpening devices, relates to a pencil sharpening device, and particularly relates to an automatic pencil feeding and retracting mechanism of the pencil sharpening device.
Background
Nowadays, automatic pencil sharpening devices are used by more and more people, and the requirements of people on the usability of the pencil sharpening devices are also higher and higher, so that the existing pencil sharpener in the market basically has the function of automatically advancing and retreating the pencil. For example, the pen feeding device of the automatic pencil sharpener disclosed in the application number 201420437278.0 comprises a bracket, a poking wheel and two mounting shafts which are connected with the bracket in a shaft mode, wherein gears and rollers are sequentially sleeved on the two mounting shafts, the gears on the two mounting shafts are in central symmetry, the gears are meshed with racks on the poking wheel, the rollers and the gears are in clearance fit with the mounting shafts, when the poking wheel rotates along the pen feeding direction, the poking wheel drives the two gears to rotate through friction and approach to each other along one end of the mounting shaft under the centripetal effect, the two gears move towards the corresponding rollers and are tightly pressed with one side end of the rollers, and the two rollers are driven to rotate by friction of the corresponding gears so as to automatically feed a pencil inserted between the two rollers into the pencil sharpening device for cutting; when the poking wheel rotates along the direction of withdrawing the pencil, the two rollers can rotate reversely to withdraw the cut pencil automatically.
In addition, this cut pencil device still sets up supporting spring between dialling wheel and support, after the pencil cuts, cut the pencil and hold the mechanism of cutting in the device of cutting the pencil, the pencil receives great resistance this moment, two gyro wheels have great resistance because of having frictional force with the pencil so also, two gears just receive great resistance like this, when two gears receive great resistance and motionless, stir rotation in-process and gear shaft contact and receive reaction force, and then compression supporting spring for slip appears between pivot and the gear, the pencil no longer advances the pencil inwards, thereby effectively protect the pencil not excessively cut. In addition, the friction force between the poking wheel and the two gears is direct power for driving the gears to rotate, abrasion is necessarily generated between the poking wheel and the two gears after the pencil sharpening device is used for many times, the poking wheel and the gears slip and cannot advance and retract, the abrasion between the poking wheel and the gears can be compensated by the elasticity of the supporting spring, and the poking wheel can always form contact with the two gears to ensure the stability of automatic advance and retraction.
However, in practical application, the structure is found to be unreasonable, because the support keeps still and the toggle wheel rotates, the state that one end is movable and the other end is fixed easily causes the torsion of the support spring to generate torsion, and the torsion can generate resistance to the rotation of the toggle wheel, so that the pen feeding and withdrawing resistance and the pen cutting resistance are increased. For this reason, the conventional technical means of those skilled in the art is to set a plurality of elastic sheets on the support along the circumferential direction or directly set a wave-shaped elastic washer instead of the supporting spring, for example, a pen feeding device disclosed in application No. 201520883301.3, an automatic pen feeding mechanism disclosed in application No. 201510752202.6, an automatic pen feeding and retracting pencil machine disclosed in application No. 201420669242.5, etc., however, the pressure is not as even as that of using the supporting spring, and the transmission is more stable no matter if a plurality of elastic sheets are set or the wave-shaped elastic washer is used.
Disclosure of Invention
The invention aims at solving the problems existing in the prior art, and provides an automatic pen feeding and retracting mechanism of a pen cutting device, which aims at solving the technical problems of ensuring the stability of feeding and retracting pens and ensuring more reasonable structure and smoother feeding and retracting of pens.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides an automatic advance and withdraw pen mechanism of pencil device, includes support, supporting spring, two parallel connection in the pivot subassembly of support outer end and set up in the support inboard and can drive two pivot subassembly pivoted driving disk when rotating, form the centre gripping mouth between two pivot subassemblies, the driving disk center runs through and is provided with the pen hole, and the outer terminal surface of driving disk is supported with two pivot subassemblies all the time under supporting spring's elasticity effect and is leaned on, is equipped with the through-hole on the support, its characterized in that is equipped with the driving disk in the through-hole, runs through on the driving disk and is provided with the hole of stepping down just to communicate with the pen hole, driving disk and driving disk circumference are fixed and the driving disk can be moved along the axis direction of pen hole for the driving disk, and supporting spring locates between driving disk and the driving disk, and supporting spring both ends are supported respectively and are supported on outer terminal surface of driving disk and the driving disk inner terminal surface, and driving disk inner terminal surface is equipped with the connecting portion.
When the pencil sharpener is used, the automatic pencil feeding and retreating mechanism is arranged at the pencil feeding hole of the pencil sharpener, the outer end of the pencil holder is connected with the connecting part which is a transmission disc, a user inserts a pencil into the clamping opening between the two rotating shaft assemblies from the pencil feeding hole, and then the crank of the pencil sharpener is rotated to enable the pencil holder to rotate.
The pen rack drives the transmission disc to rotate, and the driving disc and the transmission disc synchronously rotate, so that the driving disc rotates, and the driving disc drives the two rotating shaft assemblies to rotate through friction force, so that the two rotating shaft assemblies automatically send pencils into the pen rack through friction force for cutting. After the pencil is cut, the crank is reversed to enable the pencil holder to drive the driving disc to reversely rotate, the driving disc drives the two rotating shaft assemblies to reversely rotate through friction force, and the two rotating shaft assemblies automatically withdraw the cut pencil from the pencil holder through friction force.
This automatic advance and move back pen mechanism is through setting up supporting spring, and the driving disk offsets with two pivot subassemblies all the time under supporting spring's elasticity effect and leans on for can form frictional force to drive two pivot subassemblies rotation all the time between driving disk rotation and two pivot subassemblies, improved the stability of advancing and moving back the pen well. Meanwhile, the driving disc and the transmission disc are circumferentially fixed, and the supporting spring is arranged between the driving disc and the transmission disc, so that the supporting spring can synchronously rotate along with the driving disc and the transmission disc, the supporting spring is ensured to only provide elastic force along the axial direction of the pen passing hole, the phenomenon that one end of the supporting spring is twisted is eliminated, the supporting spring cannot form resistance to the rotation of the driving disc due to the twisting of one end, the structure is more reasonable, the automatic feeding and the discharging of the pencil are smoother, and a user can have better use experience.
In the automatic pen feeding and retreating mechanism of the pencil sharpener, the outer end face of the driving disc is provided with the first annular partition wall, the inner end face of the driving disc is provided with the second annular partition wall, the outer end of the first annular partition wall is inserted into the second annular partition wall and forms clearance fit with the second annular partition wall, the inner end of the supporting spring is inserted into the inner side of the first annular partition wall, at least one lug is fixedly connected to the outer peripheral face of the first annular partition wall, at least one notch is correspondingly formed in the inner end face of the second annular partition wall, and each lug is inserted into the corresponding notch.
The outer terminal surface of driving disk sets up annular partition wall one, driving disk inner terminal surface sets up annular partition wall two, link firmly in the lug of annular partition wall one lateral wall inserts in the breach that corresponds, the cooperation of lug and breach makes and forms circumference fixed between driving disk and the driving disk, lean on and make driving disk and driving disk synchronous rotation through lug lateral wall and breach inside wall offset when the penholder drives the driving disk rotation, the support spring just can not take place to turn round and produce the resistance to the rotation of driving disk like this, and form clearance fit between lug and the cooperation of breach and annular partition wall two and the annular partition wall one, make the driving disk can follow the axis direction of pen hole for the driving disk again, thereby make the structure more reasonable, the automation of pencil advance and retreat more smooth and easy when improving advance and withdraw the pen stability.
In the automatic pen feeding and withdrawing mechanism of the pencil sharpener, the outer end face of the annular partition wall is located outside the face where the outer port of the through hole is located, the outer end face of the protruding block is flush with the outer end face of the annular partition wall, a yielding gap is formed between the annular partition wall I and the inner wall of the through hole, and the two inner ends of the annular partition wall are inserted into the yielding gap.
The space between the driving disc and the surface of the port outside the through hole is narrow, if the lug is arranged in the space, the matching length of the lug and the notch is necessarily short, and if the driving disc is worn and moves under the action of the elasticity of the supporting spring, the lug is likely to be separated from the notch. Therefore, the annular partition wall I and the inner wall of the through hole are provided with the yielding gap, so that the protruding block can be positioned in the yielding gap, and the matching length of the protruding block and the notch can be longer, thereby ensuring the reliability of synchronous rotation between the transmission disc and the driving disc.
In the automatic pen feeding and retreating mechanism of the pencil sharpener, the protruding block is square, the inner end face of the protruding block is fixedly connected with the outer end face of the transmission disc, and the protruding block, the transmission disc and the annular partition wall are of an integrated structure.
The lug, the driving disc and the annular partition wall are of an integrated structure, the inner end face of the lug is fixedly connected with the outer end face of the driving disc, so that the strength of the lug can be increased, the situation that the lug is deformed under force to clamp the driving disc and the driving disc is avoided, and the supporting spring cannot provide effective elastic force for the driving disc is caused.
In the automatic pencil feeding and withdrawing mechanism of the pencil sharpener, as another technical scheme, the outer end face of the driving disc is provided with the first annular partition wall, the inner end face of the driving disc is provided with the second annular partition wall, the second inner end of the annular partition wall is inserted into the first annular partition wall and forms clearance fit with the first annular partition wall, the outer end of the supporting spring is positioned on the inner side of the second annular partition wall, at least one positioning block is fixedly connected to the outer peripheral face of the annular partition wall, at least one positioning opening is correspondingly formed in the outer end face of the annular partition wall, and each positioning block is inserted into the corresponding positioning opening.
The outer terminal surface of driving disk sets up annular partition wall one, the driving disk inner terminal surface sets up annular partition wall two, link firmly in the locating piece of annular partition wall lateral wall inserts in the locating hole that corresponds, the cooperation of locating piece and locating hole makes and forms circumference fixedly between driving disk and the driving disk, lean on and make driving disk and driving disk synchronous rotation through locating piece lateral wall and locating hole inside wall counterbalance when the penholder drives the driving disk rotation, the support spring just can not take place to turn round and produce the resistance to the rotation of driving disk like this, and form clearance fit between the cooperation of locating piece and locating hole and annular partition wall two and the annular partition wall one, make the driving disk can reciprocate for the driving disk again, thereby make the structure more reasonable, the automation of pencil advance and retreat more smooth and easy when improving advance and withdraw stability.
In the automatic pen feeding and retreating mechanism of the pencil sharpening device, the two rotating shaft assemblies comprise rotating shafts, clutch wheels and pen feeding wheels sleeved on the rotating shafts, the two clutch wheels are arranged at opposite ends of the two rotating shafts, the clamping openings are formed between the outer side walls of the two pen feeding wheels, the two pen feeding wheels are circumferentially fixed with the corresponding rotating shafts, a plurality of elastic protruding heads are axially arranged on the two rotating shafts, the surfaces of the elastic protruding heads are spherical, the elastic protruding heads on the same rotating shaft are abutted against the inner wall of the pen feeding wheels, when the driving disc rotates along the pen feeding direction, the two clutch wheels can be driven to rotate and approach each other along the rotating shafts, and when the two clutch wheels approach each other, the two pen feeding wheels can be pushed to approach each other and rotate; when the driving disc rotates along the pen withdrawal direction, the two clutch wheels can be driven to rotate and are mutually far away along the rotating shaft, and when the two clutch wheels are mutually far away to one end part of the rotating shaft, the two clutch wheels are circumferentially fixed with the rotating shaft.
When a pencil is fed, the driving disc rotates along one direction, the driving disc drives the two clutch wheels to rotate respectively under the action of friction force, the two clutch wheels are close to each other along the rotating shaft under the action of centripetal force, the two clutch wheels are respectively contacted with the pencil feeding wheel sleeved on the same rotating shaft in the process of the two clutch wheels being close to each other, the two clutch wheels can push the two pencil feeding wheels to be close to each other along the rotating shaft, the two pencil feeding wheels are close to each other to clamp the pencil, and meanwhile, the two clutch wheels drive the two pencil feeding wheels to rotate with the rotating shaft through friction force, and the two pencil feeding wheels can automatically feed the pencil into the pencil holder for cutting under the action of friction force. After the pencil is cut, the driving disc reversely rotates, the driving disc drives the two clutch wheels to reversely rotate respectively under the action of friction force, the two clutch wheels are mutually far away along the rotating shaft under the centrifugal action, when the two clutch wheels are far away to one end part of the rotating shaft, the two clutch wheels are circumferentially fixed with the corresponding rotating shaft, the two rotating shafts carry the respective pencil feeding wheels to reversely rotate, and the two pencil feeding wheels automatically withdraw the cut pencil from the pencil cutting device under the action of friction force.
This automatic advance and withdraw pen mechanism can increase the pivot and correspond the frictional force between the pen feed wheel through the setting of elasticity protruding head to avoid appearing skidding between pen feed wheel and the pivot, also improved the stability when automatic advance and withdraw the pen to a certain extent.
Compared with the prior art, the automatic pen feeding and retreating mechanism of the pencil sharpening device utilizes the supporting spring to improve the stability of feeding and retreating the pencil and effectively protect excessive cutting of the pencil, and meanwhile, the supporting spring can synchronously rotate along with the driving disc and the driving disc through arranging the driving disc in the support, so that the supporting spring is ensured to only provide the elastic force along the axial direction of the pencil passing hole, the phenomenon that one end of the supporting spring is twisted is eliminated, and the automatic feeding and retreating of the pencil is more reasonable in structure and smoother, and a user can have better use experience.
Drawings
Fig. 1 is a schematic view of an embodiment of an automatic feeding and discharging mechanism of the pencil sharpener.
Fig. 2 is a cross-sectional view of an embodiment of an automatic feeding and discharging mechanism of the pencil sharpener.
Fig. 3 is a schematic view showing the cooperation between the driving disc and the driving disc in the first embodiment of the automatic feeding/discharging mechanism of the pencil sharpener.
Fig. 4 is an exploded view of a driving disk and a driving disk in a first embodiment of an automatic feeding and discharging mechanism of the pencil sharpener.
Fig. 5 is an exploded view of the rotating shaft assembly in the automatic pencil sharpener.
In the figure, 1, a bracket; 1a, through holes; 1a1, an annular boss; 2. a support spring; 3. a spindle assembly; 3a, a rotating shaft; 3a1, elastic raised heads; 3b, clutch wheel; 3c, a pen feeding wheel; 4. a clamping opening; 5. a drive plate; 5a, passing through the pen hole; 5b, annular partition walls II; 5b1, notch; 6. a drive plate; 6a, a yielding hole; 6b, a coupling part; 6c, annular partition wall I; 6d, protruding blocks; 7. a relief gap; 8. a pen rack; 9. and (5) a crank.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
Example 1
As shown in fig. 1 and 2, an automatic pen feeding and retreating mechanism of a pencil sharpener comprises a bracket 1, two rotating shaft assemblies 3 connected in parallel to the outer end of the bracket 1, and a driving disc 5 which is arranged on the inner side of the bracket 1 and can rotate, wherein the outer end surface of the driving disc 5 is abutted against the two rotating shaft assemblies 3, and when the driving disc 5 rotates, the two rotating shaft assemblies 3 can be driven to rotate by friction force. A clamping opening 4 is formed between the two rotating shaft assemblies 3, a pen passing hole 5a is formed in the driving disc 5 in a penetrating mode, the clamping opening 4 is located above the outer port of the pen passing hole 5a, and when the driving disc 5 rotates, the two rotating shaft assemblies 3 can be driven to rotate through friction force, and automatic pen feeding and retreating are achieved.
As shown in fig. 1 and 5, the two rotating shaft assemblies 3 each include a rotating shaft 3a, and a clutch wheel 3b and a pen-feeding wheel 3c sleeved on the rotating shaft 3a, the two clutch wheels 3b are arranged at opposite ends of the two rotating shafts 3a, the two pen-feeding wheels 3c are circumferentially fixed with the corresponding rotating shafts 3a, the clamping openings 4 are formed between the outer side walls of the two pen-feeding wheels 3c, when the driving disc 5 rotates along the pen feeding direction, the two clutch wheels 3b can be driven to rotate and approach each other along the rotating shafts 3a, and when the two clutch wheels 3b approach each other, the two pen-feeding wheels 3c can be pushed to approach each other and rotate; when the driving disc 5 rotates along the pen withdrawal direction, the two clutch wheels 3b can be driven to rotate and are mutually far away along the rotating shaft 3a, and when the two clutch wheels 3b are mutually far away to one end part of the rotating shaft 3a, the two clutch wheels 3b are circumferentially fixed with the rotating shaft 3 a. The specific structure of the rotating shaft assembly 3 and the specific principle of realizing the feeding and the returning of the pencil can refer to a pencil feeding device of an automatic pencil sharpener disclosed by the application number 201420437278.0.
As shown in fig. 5, a plurality of elastic raised heads 3a1 are axially arranged on the two rotating shafts 3a, the surfaces of the elastic raised heads 3a1 are spherical, and the elastic raised heads 3a1 on the same rotating shaft 3a are abutted against the inner wall of the pen feeding wheel 3 c. Through the setting of elasticity protruding head 3a1, can increase the frictional force between pivot 3a and the corresponding pen feed wheel 3c to avoid sending and skid appearing between pen feed wheel 3c and the pivot 3a, also improved the stability when moving back the pen voluntarily to a certain extent.
As shown in fig. 2, a through hole 1a is formed in the bracket 1, a rotatable driving disc 6 is arranged in the through hole 1a, the driving disc 6 is positioned below the driving disc 5, and a relief hole 6a which is opposite to and communicated with the pen through hole 5a is formed in the driving disc 6 in a penetrating manner. The driving disc 6 is circumferentially fixed with the driving disc 5, the driving disc 5 can move along the axial direction of the pen passing hole 5a relative to the driving disc 6, a supporting spring 2 is arranged between the driving disc 6 and the driving disc 5, two ends of the supporting spring 2 respectively lean against the outer end face of the driving disc 6 and the inner end face of the driving disc 5, and the outer end face of the driving disc 5 always leans against the two rotating shaft assemblies 3 under the action of the elasticity of the supporting spring 2. The inner wall of the through hole 1a is provided with an annular boss 1a1, the transmission disc 6 is positioned above the annular boss 1a1, the inner end surface of the transmission disc 6 is provided with a connecting part 6b penetrating through the central hole of the annular boss 1a1, the inner end surface of the connecting part 6b is provided with a connecting hole, the connecting hole is a square hole, and the abdicating hole 6a and the square hole are coaxially arranged.
As shown in fig. 2 and 3, the outer end surface of the driving disc 6 is provided with an annular partition wall 6c, and the outer end surface of the annular partition wall 6c is positioned outside the surface where the outer port of the through hole 1a is positioned. An abdication gap 7 is arranged between the outer peripheral surface of the first annular partition wall 6c and the inner side wall of the through hole 1a, the inner end surface of the driving disc 5 is provided with a second annular partition wall 5b, the inner end of the second annular partition wall 5b is inserted into the abdication gap 7, and the outer end of the first annular partition wall 6c is inserted into the second annular partition wall 5b to form clearance fit.
As shown in fig. 3 and 4, at least one protruding block 6d is fixedly connected to the outer peripheral surface of the first annular partition wall 6c, at least one notch 5b1 is correspondingly formed in the inner end of the second annular partition wall 5b, and each protruding block 6d is inserted into the corresponding notch 5b 1. In the present embodiment, the number of the bumps 6d is two. The protruding block 6d is square, the inner end face of the protruding block 6d is fixedly connected with the outer end face of the transmission disc 6, and the protruding block 6d, the transmission disc 6 and the annular partition wall 6c are of an integrated structure. The driving disc 6 and the driving disc 5 are circumferentially fixed through the cooperation of the protruding block 6d and the notch 5b1, and meanwhile, the driving disc 5 can move relative to the driving disc 6 along the axial direction of the pen passing hole 5a through the cooperation of the protruding block 6d and the notch 5b1 and the clearance fit of the annular partition wall I6 c and the annular partition wall II 5 b.
When the pencil sharpener is used, the automatic pencil feeding and retreating mechanism is arranged at the pencil feeding hole of the pencil sharpener, the outer end of the pencil holder 8 is inserted into the connecting hole at the inner end of the transmission disc 6, a user inserts a pencil between the two rotating shaft assemblies 3 from the pencil feeding hole, and then the crank 9 of the pencil sharpener is rotated to enable the pencil holder 8 to rotate.
The pen rack 8 drives the transmission disc 6 to synchronously rotate, and simultaneously, the driving disc 5 can synchronously rotate with the pen rack 8 and the transmission disc 6 through the matching of the convex blocks 6d on the transmission disc 6 and the gaps 5b1 on the driving disc 5. In this way, friction force is generated between the driving disc 5 and the two rotating shaft assemblies 3, so that the two rotating shaft assemblies 3 rotate respectively, and the pencil is sent into the pen rack 8 for cutting through the pen hole 5a and the abdication hole 6a sequentially by the friction force by the rotation of the two rotating shaft assemblies 3. After cutting, the crank 9 is rotated reversely, the pen holder 8, the driving disc 6 and the driving disc 5 are rotated reversely synchronously, and the two driving disc 5 assemblies rotate reversely respectively to withdraw the cut pencil automatically.
This automatic advance and withdraw pen mechanism is through setting up supporting spring 2, and driving disk 5 offsets with two pivot subassemblies 3 all the time under supporting spring 2's elasticity effect and leans on for can form frictional force all the time between driving disk 5 rotation and two pivot subassemblies 3 and drive two pivot subassemblies 3 rotation, improved the stability of advancing and withdrawing the pen well. Simultaneously, driving disk 5 and driving disk 6 realize synchronous rotation through the cooperation of lug 6d and breach 5b1, and support spring 2 sets up again between driving disk 5 and driving disk 6, consequently support spring 2 can rotate along with driving disk 5 and driving disk 6 in step, just so ensure that support spring 2 only provides along the elasticity of crossing a hole 5a axis direction, the phenomenon that one end torsion appears in support spring 2 has been eliminated, support spring 2 can not be because of one end torsion and form the resistance to the rotation of driving disk 5, thereby make the structure more reasonable, the automation of pencil advances and moves back more smoothly, the user can have better use experience.
Example two
The present embodiment is basically the same in structure and principle as the first embodiment, except that: in this embodiment, the outer end surface of the driving disc 6 is provided with a first annular partition wall 6c, the inner end surface of the driving disc 5 is provided with a second annular partition wall 5b, the inner end of the second annular partition wall 5b is inserted into the first annular partition wall 6c and forms clearance fit with the first annular partition wall, the outer end of the supporting spring 2 is located inside the second annular partition wall 5b, the outer peripheral surface of the second annular partition wall 5b is fixedly connected with at least one positioning block, the outer end surface of the first annular partition wall 6c is correspondingly provided with at least one positioning opening, and each positioning block is inserted into the corresponding positioning opening.
The cooperation of locating piece and locating hole makes and forms circumference fixedly between drive disk 6 and the drive disk 5, drive disk 5 and drive disk 6 synchronous rotation through locating piece lateral wall and the offset of locating hole inside wall when penholder 8 drive disk 6 rotates, support spring 2 just can not take place to turn round like this and produce the resistance to the rotation of drive disk 5, and form clearance fit between the cooperation of locating piece and locating hole and annular partition wall two 5b and the annular partition wall one 6c, make drive disk 5 can follow the axis direction removal of pen hole 5a for drive disk 6 again, thereby make the structure more reasonable, the automation of pencil advance and retreat more smooth and easy when improving advance and withdraw the pen stability.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (4)
1. The utility model provides an automatic pencil feeding and withdrawing mechanism of a pencil sharpening device, which comprises a bracket (1), a support spring (2), two rotating shaft components (3) which are connected in parallel with the outer ends of the bracket (1) and a driving disc (5) which is arranged on the inner side of the bracket (1) and can drive the two rotating shaft components (3) to rotate when rotating, a clamping opening (4) is formed between the two rotating shaft components (3), the center of the driving disc (5) is penetrated and provided with a pencil passing hole (5 a), the outer end surface of the driving disc (5) is propped against the two rotating shaft components (3) under the action of the elastic force of the support spring (2), the bracket (1) is provided with a through hole (1 a), and is characterized in that a transmission disc (6) is arranged in the through hole (1 a), a yielding hole (6 a) which is directly communicated with the pencil passing hole (5 a) is penetrated and arranged on the transmission disc (6), the transmission disc (6) and the driving disc (5) are circumferentially fixed, the driving disc (5) can move relative to the transmission disc (5) along the axis direction of the pencil passing hole (5 a), the outer end surface of the supporting spring (5) is arranged between the transmission disc (6) and the transmission disc (5) and the outer end surface of the supporting disc (6) is provided with a connecting end surface (6) respectively, two end surfaces (6 b) are respectively, and the inner end surfaces (6) are respectively connected with the transmission disc (6), the connecting hole is a square hole, the outer end of a pen rack (8) of the pencil sharpening device is inserted into the connecting hole, an annular partition wall I (6 c) is arranged on the outer end face of a transmission disc (6), an annular partition wall II (5 b) is arranged on the inner end face of a driving disc (5), the outer end of the annular partition wall I (6 c) is inserted into the annular partition wall II (5 b) to form clearance fit, the inner end of a supporting spring (2) is inserted into the inner side of the annular partition wall I (6 c), at least one lug (6 d) is fixedly connected to the outer peripheral face of the annular partition wall I (6 c), at least one notch (5 b 1) is correspondingly formed in the inner end face of the annular partition wall II (5 b), and each lug (6 d) is inserted into the corresponding notch (5 b 1).
2. The automatic pencil feeding and withdrawing mechanism of pencil sharpener according to claim 1, wherein the outer end face of the first annular partition wall (6 c) is located outside the face of the outer port of the through hole (1 a), the outer end face of the protruding block (6 d) is flush with the outer end face of the first annular partition wall (6 c), a yielding gap (7) is formed between the first annular partition wall (6 c) and the inner wall of the through hole (1 a), and the inner end of the second annular partition wall (5 b) is inserted into the yielding gap (7).
3. The automatic pencil feeding and withdrawing mechanism of pencil sharpener according to claim 2, wherein the protruding block (6 d) is square, the inner end surface of the protruding block (6 d) is fixedly connected with the outer end surface of the driving disc (6), and the protruding block (6 d), the driving disc (6) and the annular partition wall I (6 c) are of an integrated structure.
4. The automatic pencil feeding and withdrawing mechanism of pencil sharpening device as defined in claim 1, wherein the two rotating shaft assemblies (3) comprise rotating shafts (3 a) and clutch wheels (3 b) and pencil feeding wheels (3 c) sleeved on the rotating shafts (3 a), the two clutch wheels (3 b) are arranged at opposite ends of the two rotating shafts (3 a), the clamping ports (4) are formed between the outer side walls of the two pencil feeding wheels (3 c), the two pencil feeding wheels (3 c) are circumferentially fixed with the corresponding rotating shafts (3 a), a plurality of elastic protruding heads (3 a 1) are axially arranged on the two rotating shafts (3 a), the surfaces of the elastic protruding heads (3 a 1) are spherical, and each elastic protruding head (3 a 1) on the same rotating shaft (3 a) is abutted against the inner wall of the pencil feeding wheel (3 c), when the driving disc (5) rotates along the pencil feeding direction, the two clutch wheels (3 b) can be driven to rotate and approach each other along the rotating shaft (3 a), and when the two pencil feeding wheels (3 b) are pushed to approach each other; when the driving disc (5) rotates along the pen withdrawal direction, the two clutch wheels (3 b) can be driven to rotate and are mutually far away along the rotating shaft (3 a), and when the two clutch wheels (3 b) are mutually far away to one end part of the rotating shaft (3 a), the two clutch wheels (3 b) are circumferentially fixed with the rotating shaft (3 a).
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| CN201910473727.4A CN110126520B (en) | 2019-06-01 | 2019-06-01 | Automatic pen feeding and retreating mechanism of pencil sharpening device |
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| CN201910473727.4A CN110126520B (en) | 2019-06-01 | 2019-06-01 | Automatic pen feeding and retreating mechanism of pencil sharpening device |
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| CN110126520B true CN110126520B (en) | 2024-01-23 |
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| CN114987093B (en) * | 2022-06-10 | 2023-11-17 | 昆明理工大学 | Multifunctional convenient pencil sharpener |
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