CN205523270U

CN205523270U - Electric pencil sharpener

Info

Publication number: CN205523270U
Application number: CN201620113746.8U
Authority: CN
Inventors: 娄宗茂
Original assignee: Jinyi Stationery Co Ltd
Current assignee: Jinyi Stationery Co Ltd
Priority date: 2016-02-04
Filing date: 2016-02-04
Publication date: 2016-08-31
Anticipated expiration: 2026-02-04

Abstract

The utility model provides an electric pencil sharpener, it includes casing (1) and be located base (2), motor (3), knife rest (4) and the drive assembly of casing (1), base (2) are connected with casing (1), motor (3) and drive assembly all connect on base (2), knife rest (4) and casing (1) rotate to be connected, and be equipped with in knife rest (4) and hinder pen piece (5), and knife rest (4) be connected with drive assembly's output, be equipped with micro -gap switch (6) in casing (1), micro -gap switch (6) are connected with motor (3) electricity, be equipped with the link mechanism who is used for controlling micro -gap switch (6) on base (2), link mechanism's one end and micro -gap switch (6) laminating, link mechanism's the other end respectively with the output that hinders pen piece (5) and drive assembly to closing, compared with the prior art, the utility model has the characteristics of control mechanism is simple, the solder joint is less, the stability in use is better, the use is simple and convenient, can improve workman's packaging efficiency by a wide margin and the cost lower.

Description

Electric pencil-sharpening unit

Technical field

This utility model belongs to technical field of stationery, particularly relates to a kind of electric pencil-sharpening unit.

Background technology

At present, the electric pencil-sharpening unit of prior art is according to using function can be divided into manual type electric pencil-sharpening unit and self-action is electronic cuts pen Device；Manual type electric pencil-sharpening unit refers to the electric pencil-sharpening unit needing to be opened and closed by user Non-follow control motor；And self-action is electronic Pencil sharpener is divided into again self-starting electric pencil-sharpening unit and stopping electric pencil-sharpening unit of fining away, and self-starting electric pencil-sharpening unit refers to insert pencil i.e. Bootable pencil sharpener, the cutting degree of pencil needs user oneself to judge, extracts pencil electric pencil-sharpening unit and i.e. quits work； Stopping electric pencil-sharpening unit of fining away is alternatively referred to as Full-automatic pencil cutter, refers to the self-braking electric pencil-sharpening unit of energy after pencil sharpening, when So it is also equipped with the function of self-starting.When manual type electric pencil-sharpening unit and self-starting electric pencil-sharpening unit use, need user at any time Pay close attention to pencil sharpener and cut the situation of pen, in order to closing pencil sharpener in time, otherwise pencil is easily directly cut and cannot be used, therefore use Cumbersome；Although and fine away and stop electric pencil-sharpening unit and can automatically control the process of cutting of whole pencil, but whole controlling organization structure Complexity, and at least need two switch with the use of, even also need to integrated circuit board and single-chip microcomputer be controlled, this just makes The overall volume obtaining pencil sharpener is relatively big, and is added significantly to the cost of pencil sharpener, and the solder joint owing to circuit is more, between circuit Also be increased by, and pencil sharpener major part to be students in middle and primary schools using, it uses environment relatively complicated, integrated circuit board and monolithic It is relatively big that environmental effect received by machine, and solder joint is the most, the situation that solder joint comes off the most easily occurs, therefore stability in use is poor, and Also being added significantly to the assembling difficulty of workman, packaging efficiency is relatively low.

Summary of the invention

This utility model provides for problem above that a kind of controlling organization is simple, solder joint is less, stability in use is preferable and can be significantly Improve the electric pencil-sharpening unit of worker assembles's efficiency.

This utility model solves the technical scheme used by problem above: provide a kind of electric pencil-sharpening unit with following structure, it Including housing and be positioned at the pedestal of housing, motor, knife rest and transmission component, described pedestal is connected with housing, described motor and Transmission component is both connected on pedestal, and described knife rest is connected with housing into rotation, is provided with a resistance block, and knife rest and transmission group in knife rest The outfan of part connects, and is provided with microswitch in described housing, and microswitch electrically connects with motor, described pedestal be provided with for Controlling the linkage of microswitch, one end of described linkage and microswitch are fitted, the other end of linkage respectively with The outfan of a resistance block and transmission component supports and closes.

After using above structure, compared with prior art, after this utility model is owing to using linkage, when pen is inserted at knife rest Fashionable so that under knife rest, pressure zone moves the outfan action of transmission component, and the outfan of transmission component touches linkage, thus Touching microswitch and start motor, carry out cutting the action of pen, after pen is sharpened, nib will touch a resistance block so that resistance Block touches linkage, thus touches microswitch and close motor and realize fining away the function stopped, and the most whole starting to is cut The process that point stops has only to a microswitch and can realize automatically controlling, and uses easier, and this is just greatly reduced relevant Parts and the solder joint of electrical connection, structure is the simplest, and the packaging efficiency of workman can be greatly improved, and reduces production cost, and Linkage is preferable to the adaptability of environment, is difficult to protected from environmental, and stability in use is preferable.Therefore this utility model has control Mechanism processed is simple, solder joint is less, stability in use is preferable, easy to use, worker assembles efficiency can be greatly improved and cost is relatively low Feature.

As improvement, described linkage includes being positioned at the sharpening of housing to be stopped connecting rod and starts connecting rod, fine away stop connecting rod and Starting connecting rod to be all connected with pedestal, described sharpening stops on connecting rod and starts being respectively equipped with the first feeler lever and the second feeler lever on connecting rod, And fine away and stop one end and the microswitch of connecting rod and fit, also fit with microswitch in the one end starting connecting rod, described first feeler lever Supporting with a resistance block and close, the outfan of the second feeler lever and transmission component supports and closes；When penholder enters knife rest so that the outfan of transmission component Touch the second feeler lever, so that the one end starting connecting rod is touched microswitch and started motor；And pen is when being sharpened, nib touches A dynamic resistance block, and hinder a block and drive the first feeler lever, so that stopping connecting rod of fining away touches microswitch and closes motor；Then this The linkage parts of spline structure are less, and dependability is also preferable, on the premise of ensureing dependability, drops further Low cost of the present utility model.

As improving further, the middle part of described startup connecting rod is hinged with pedestal, starts the lower end of connecting rod one end and the second feeler lever even Connecing, the upper end of the second feeler lever and the outfan of transmission component are to closing, and described sharpening stops middle part and the startup rod hinge connection of connecting rod, Sharpening stops connecting rod one end and is connected with the lower end of the first feeler lever, and conjunction is supported with a resistance block in the upper end of the first feeler lever, and fining away, it is another to stop connecting rod One end and microswitch are fitted, and the connecting rod other end is spacing is connected for the described startup connecting rod other end and stopping of fining away；After the most so arranging, On the premise of ensureing linkage stability in use, reduce the volume of linkage further so that this utility model entirety is more Adding compact, volume is less.

As further improving, the housing below described pedestal is provided with bottom, and the fine motion that described microswitch is open in usual is opened Closing, described startup connecting rod is " U " font structure, and the bottom starting connecting rod " U " font structure is hinged with pedestal, starts connecting rod The upper surface of one end is connected with the lower end of the second feeler lever, and the upper end of the second feeler lever is supported with the outfan of transmission component and closed, and starts even The position contrary with the second feeler lever, bar one end is provided with first protruding, and first is protruding and is provided with the first spring between bottom, described in cut Point stops the middle part of connecting rod and is hinged on the position starting connecting rod other end close end, the upper surface stopping connecting rod one end and the of fining away The lower end of one feeler lever connects, and the upper end of the first feeler lever and a resistance block, to closing, are fined away and stopped the connecting rod other end and microswitch laminating, The described startup connecting rod other end is provided with tray, and tray is positioned to fine away and stops the lower section of the connecting rod other end, and tray upper surface and sharpening Stop the lower surface laminating of the connecting rod other end；Under the effect of the first spring, the stopping connecting rod other end of fining away is pressed together on microswitch On so that microswitch is closed；After the most so arranging, on the premise of ensureing linkage stability in use, enter While one step reduces the volume of linkage, the sensitivity of electric motor starting and stopping can being increased further, save battery electric quantity After consumption, extends the use time of battery, and the first spring and tray are arranged so that after point of pleasing correct, during extracting, The stopping connecting rod other end of fining away first resets, and starts connecting rod also time delay in knife rest because of pen, therefore at the first spring to starting connecting rod During reset, motor also can drive a few circle of blade holder turns, and the most now hobboing cutter is also in motion, and hobboing cutter is also easier to and pen Point disengages, and can be effectively prevented the blade of hobboing cutter after originally having cut stopping still having part to be also embedded in and extract lead on pen core or a shell Pen causes the situation of disconnected core to occur, and the fineness at pencil cutting position is preferable.

As further improving, described transmission component includes input gear and output gear, described input gear and output gear All being rotatably connected on the upper surface of pedestal, input gear engages with output gear, and input gear engages with the outfan of motor, Output gear is in transmission connection with knife rest, and described first feeler lever is positioned at the lower section of output gear, and the upper surface of the first feeler lever and output The lower surface laminating of gear；The transmission component parts of the most this structure are less, and stability in use is also preferable, simultaneously with connecting rod machine The compactedness overall after assembling of structure is also preferable, can improve the utilization ratio in space in housing, and then reduce entirety of the present utility model Volume.

As further improving, it is provided with regulation between described second feeler lever and a resistance block and cuts a regulating block for nib thickness, regulation Block is slidably connected at the lower surface of pedestal, and described housing is provided with shifting block, and shifting block is connected by driving lever with regulating block, described regulation The lower surface of block is plane, and the upper surface of regulating block is inclined-plane, and fit with the second feeler lever upper surface in the lower surface of regulating block, institute Stating a resistance block to be slidably connected on knife rest, the lower slide of knife rest connects the first push rod, the upper end of described first push rod and resistance pen Block is fitted, and the lower end of the first push rod is through the upper surface laminating of pedestal and transmission component and regulating block；The then regulating block of nib thickness After arranging, use motility preferable, the use demand that user is different can be met；And the nib thickness governor motion of this structure, Simple in construction, parts are relatively fewer, and the space taken is the most relatively small, and dependability is preferable.

As further improving, the position that described knife rest hinders a block corresponding is provided with lateral opening；After then opening is arranged, The pen core ruptured not only can be sidewindered in the gap of cutter in the past drop, pen core can also drop from opening part, even and if relatively Thicker pen core can also drop from knife rest, thus prevents originally the thickest pen core from cannot drop in the gap of hobboing cutter and causing nothing Method is normally cut the situation of pen and is occurred, and improves dependability of the present utility model further.

As further improving, described regulating block is " H " type structure, and the side of " H " type structure is wedge structure, " H " The opposite side side of the being strip structure of type structure；The lower surface of wedge structure is plane, and the upper surface of wedge structure is inclined-plane, and wedge The lower surface of shape structure and the first feeler lever upper surface laminating, the lower end laminating of the upper surface of wedge structure and the first push rod；Described side The upper surface of strip structure is provided with open slot along its length, and described pedestal lower surface is provided with and coordinates the guide rail guided with open slot； Then " H " type structure is favourable with other parts avoided in housing, and the combination of open slot and guide rail is improving regulation further The dependability of block the most not ensure that the reliability stopped of fining away simultaneously to regulating block lower limit.

As further improving, described housing is provided with pen bits outlet, is provided with cover plate, described cover plate at pen bits outlet And it is provided with release mechanism between microswitch；When cover plate is opened, it is impossible to open motor；After the most so arranging, can effectively prevent False touch in only user finger enters housing after cover plate is opened and start the situation that motor causes user injured and occur, it is ensured that this The safety in utilization of utility model.

As further improving, described release mechanism includes the second push rod being slidably connected in housing and is slidably connected on pedestal Safe connecting rod, pedestal is provided with through hole, and described safe connecting rod upper end is slidably connected in through-holes, and safe connecting rod upper end and the Two push rod lower end laminatings, described safe connecting rod lower end is provided with bending, and fit with microswitch in the upper surface of described bending, and bending Lower surface be provided with second protruding, described second is protruding and is provided with the second spring, the upper end of described second push rod and lid between bottom Plate is fitted；When cover plate is opened, under the effect of the second spring, bending is by microswitch pressing so that microswitch cannot be touched Move and motor cannot be opened；The most such release mechanism is also purely mechanic mechanism, and not only parts are less, and dependability is the most relatively Good, need not special instrument when assembling so that the packaging efficiency of workman is preferable, can reduce of the present utility model further simultaneously Preparation cost.

Accompanying drawing explanation

Fig. 1 is the partial sectional view of this utility model electric pencil-sharpening unit.

Fig. 2 is this utility model electric pencil-sharpening unit pedestal structural representation with lower part.

Fig. 3 is this utility model electric pencil-sharpening unit knife rest, transmission component and the structural representation of linkage.

Fig. 4 is the structural representation of this utility model electric pencil-sharpening unit linkage.

Fig. 5 is the structural representation of this utility model electric pencil-sharpening unit nib thickness regulation part.

Fig. 6 is the structural representation of this utility model electric pencil-sharpening unit nib thickness regulation section Example two.

As shown in the figure: 1, housing, 2, pedestal, 3, motor, 4, knife rest, 5, a resistance block, 6, microswitch, 7, fine away Stop connecting rod, 8, start connecting rod, the 9, first feeler lever, the 10, second feeler lever, 11, bottom, 12, first is protruding, and 13, the One spring, 14, tray, 15, input gear, 16, output gear, 17, regulating block, 18, shifting block, 19, driving lever, 20, First push rod, 21, opening, 22, open slot, 23, guide rail, 24, cover plate, the 25, second push rod, 26, safe connecting rod, 27, through hole, 28, bending, 29, second is protruding, the 30, second spring, and 31, charging circuit plate.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, this utility model is described further.

Embodiment one

As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, a kind of electric pencil-sharpening unit, it includes housing 1 and is positioned at housing 1 Pedestal 2, motor 3, knife rest 4 and transmission component (the most also include other parts, but owing to relating to sending out of the invention Bright, therefore do not repeat them here), described pedestal 2 is connected with housing 1, and described motor 3 and transmission component are both connected to pedestal 2 On, described knife rest 4 is rotationally connected with housing 1, is provided with a resistance block 5 in knife rest 4, and the outfan of knife rest 4 and transmission component Connect, be provided with microswitch 6 in described housing 1, microswitch 6 electrically connects with motor 3, described pedestal 2 be provided with for Controlling the linkage of microswitch 6, fitting with microswitch 6 in one end of described linkage, the other end of linkage divides The not outfan with a resistance block 5 and transmission component supports and closes.Housing 1 is divided into upper shell and lower house, knife rest 4 to be positioned at upper shell, Upper shell upper end is provided with end cap, and pen bits outlet is on end cap, therefore cover plate 24 is connected at the pen bits outlet of end cap, and end cap On be additionally provided with the insertion hole entered for penholder, the upper end of knife rest 4 is rotatably connected on the lower surface of end cap, and the cutting of knife rest 4 is inserted The axis of entrance and the dead in line inserting hole, the lower surface of end cap is additionally provided with and drives the gear ring of hobboing cutter, upper shell on knife rest 4 Lower end be enclosed structure, and be arranged with the axle for the second push rod 29 and output gear 16 on the lower surface of upper shell and pass Through hole, and the periphery of two through holes of the lower surface of upper shell is equipped with annular protrusion upwards, with prevent pen after cutting pen consider to be worth doing into Enter in through hole；Knife rest 4 is grafting with the axle of output gear 16, then, after end cap is opened, can carry out directly with cutter setting frame 4 Change, change convenient；Pedestal 2, motor 3 and transmission component are respectively positioned in lower house, all carry in general motor 3 Thermel protection device, place in the lower surface of bottom 11 sets battery accommodating groove, and general battery accommodating groove is rechargeable battery, then Bottom 11 inwall is additionally provided with for the charging circuit plate 31 supporting with rechargeable battery, and in the contact of battery accommodating groove the two poles of the earth is the most tactile Sheet electrically connects with microswitch 6, and another pole contact electrically connects with motor 3, and is additionally provided with external power supply socket on general lower house, When needing to frequently use for a long time, directly using external power supply to power, to facilitate the use of user, the two poles of the earth of outlet lead to Electrically connect with battery accommodating groove the two poles of the earth contact again after overcharge wiring board 31, in order to charging circuit plate 31 can protect rechargeable battery to fill Electricity time stability and prevent situation about overcharging.

Described linkage includes that the sharpening being positioned at housing 1 stops connecting rod 7 and starts connecting rod 8, fines away and stops connecting rod 7 and open Dynamic connecting rod 8 is all connected with pedestal 2, and described sharpening stops being respectively equipped with the first feeler lever 9 and the with on startup connecting rod 8 on connecting rod 7 Two feeler levers 10, and fine away stop connecting rod 7 one end fit with microswitch 6, startup connecting rod 8 one end also with microswitch 6 Laminating, described first feeler lever 9 supports conjunction with hindering a block 5, and the second feeler lever 10 supports conjunction with the outfan of transmission component；Penholder enters knife rest When 4 so that the outfan of transmission component touches the second feeler lever 10, so that microswitch 6 is touched in the one end starting connecting rod 8 And start motor 3；And pen is when being sharpened, nib touches a resistance block 5, and hinders a block 5 and drive the first feeler lever 9, so that cut Point stops connecting rod 7 and touches microswitch 6 and close motor 3.

Housing 1 below described pedestal 2 is provided with bottom 11, and described microswitch 6 is microswitch open in usual, described in open Dynamic connecting rod 8 is " U " font structure, and the bottom starting connecting rod 8 " U " font structure is hinged with pedestal 2, starts connecting rod 8 one The upper surface of end is connected with the lower end of the second feeler lever 10, and the upper end of the second feeler lever 10 is supported with the outfan of transmission component and closed, and opens Move the position contrary with the second feeler lever 10, connecting rod 8 one end and be provided with the first projection 12, set between first protruding 12 and bottom 11 The first spring 13, the described middle part fining away stopping connecting rod 7 is had to be hinged on the position starting connecting rod 8 other end close end, fine away The upper surface stopping connecting rod 7 one end is connected with the lower end of the first feeler lever 9, and the upper end of the first feeler lever 9 is supported with a resistance block 5 and closed, and cuts Point stops connecting rod 7 other end and fits with microswitch 6, and described startup connecting rod 8 other end is provided with tray 14, and tray 14 is positioned at Fine away and stop the lower section of connecting rod 7 other end, and tray 14 upper surface stops the lower surface laminating of connecting rod 7 other end with sharpening；? Under the effect of the first spring 13, stopping connecting rod 7 other end of fining away is pressed together in microswitch 6 so that microswitch 6 is in pass Closed state.

Described transmission component includes that input gear 15 and output gear 16, described input gear 15 and output gear 16 all rotate Being connected to the upper surface of pedestal 2, input gear 15 engages with output gear 16, and the outfan of input gear 15 and motor 3 Engagement, output gear 16 is in transmission connection with knife rest 4, and described first feeler lever 9 is positioned at the lower section of output gear 16, and first touches The lower surface laminating of the upper surface of bar 9 and output gear 16.

Being provided with regulation between described second feeler lever 10 and a resistance block 5 and cut a regulating block for nib thickness 17, regulating block 17 slides even Being connected on the lower surface of pedestal 2, described housing 1 is provided with shifting block 18, and shifting block 18 is connected by driving lever 19 with regulating block 17, The lower surface of described regulating block 17 is plane, and the upper surface of regulating block 17 is inclined-plane, extrudes for the first push rod 20 after preventing regulation And slide, inclined-plane is zigzag structure, and simultaneously for the use demand of regulating block 17, regulating block 17 is provided with column-shaped projection, And the bar hole coordinated that driving lever 19 is provided with and column-shaped projection slides, and the lower surface of regulating block 17 and the first feeler lever 9 upper surface Laminating, described resistance block 5 is slidably connected on knife rest 4, and the lower slide of knife rest 4 connects the first push rod 20, knife rest 4 There is through hole lower end, and the axle of output gear 16 has centre bore, and the first push rod 20 is slidably connected at the through hole of knife rest 4 lower end with defeated Going out in the hole of centre bore composition of gear 16 axle, fit with a resistance block 5 in the upper end of described first push rod 20, the first push rod 20 Lower end is through the upper surface laminating of pedestal 2 and transmission component and regulating block 17.

The position hindering a block 5 correspondence on described knife rest 4 is provided with lateral opening 21.

Described regulating block 17 is " H " type structure, and the side of " H " type structure is wedge structure, the opposite side of " H " type structure For square strip structure；The lower surface of wedge structure is plane, and the upper surface of wedge structure is inclined-plane, and the lower surface of wedge structure With the second feeler lever 10 upper surface laminating, the lower end laminating of the upper surface of wedge structure and the first push rod 20；Described side's strip structure Upper surface be provided with open slot 22 along its length, side's strip structure is provided with column-shaped projection, and driving lever 19 is provided with and cylindricality The bar hole of the protruding cooperation slided, described pedestal 2 lower surface is provided with and coordinates the guide rail 23 guided with open slot 22.

Described housing 1 is provided with pen bits outlet, is provided with cover plate 24, described cover plate 24 and microswitch 6 at pen bits outlet Between be provided with release mechanism；When cover plate 24 is opened, it is impossible to open motor 3.

Described release mechanism includes the second push rod 25 being slidably connected in housing 1 and is slidably connected safe connecting rod on the base 2 26, pedestal 2 is provided with through hole 27, and described safe connecting rod 26 upper end is slidably connected in through hole 27, and on safe connecting rod 26 End and the second push rod 25 lower end laminating, described safe connecting rod 26 lower end is provided with bending 28, and the upper surface of described bending 28 is with micro- Dynamic switch 6 is fitted, and the lower surface of bending 28 is provided with the second projection 29, is provided with between described second protruding 29 and bottom 11 Second spring 30, the upper end of the second spring 30 is socketed in the second projection 29, the upper end of described second push rod 25 and cover plate 24 Laminating；When cover plate 24 is opened, under the effect of the second spring 30, bending 28 is by microswitch 6 pressing so that fine motion is opened Close 6 to touch and motor 3 cannot be opened.Bottom 11 is provided with the most convex with the first spring 13 and the second spring 30 Rising, the lower end of the first spring 13 and the second spring 30 is socketed in each self-corresponding projection respectively

Embodiment two

The middle part of described startup connecting rod 8 is hinged with pedestal 2, starts connecting rod 8 one end and is connected with the lower end of the second feeler lever 10, and second The upper end of feeler lever 10 and the outfan of transmission component support and close, and the described middle part stopping connecting rod 7 of fining away is hinged with startup connecting rod 8, cuts Point stops connecting rod 7 one end and is connected with the lower end of the first feeler lever 9, and the upper end of the first feeler lever 9 is supported with a resistance block 5 and closed, and fines away and stops Connecting rod 7 other end is fitted with microswitch 6, with fining away, described startup connecting rod 8 other end stops that connecting rod 7 other end is spacing is connected.

As shown in Figure 6, described regulating block 17 is " H " type structure (in the present embodiment, there are three cross bars the centre of H), The side of " H " type structure is wedge structure, the opposite side side of the being strip structure of " H " type structure；The lower surface of wedge structure is Plane, the upper surface of wedge structure is jagged, and fit with the second feeler lever 10 upper surface in the lower surface of wedge structure, wedge The lower end laminating of the upper surface of shape structure and the first push rod 20；The upper surface of described side's strip structure is provided with opening along its length Groove 22, side's strip structure is provided with column-shaped projection, and driving lever 19 is provided with the bar hole coordinated slided with column-shaped projection, described Pedestal 2 lower surface is provided with and coordinates the guide rail 23 guided with open slot 22.Driving lever 19 is provided with three shifting blocks, and three shifting blocks are all provided with Have bar hole, then side's strip structure is provided with and bar hole column-shaped projection one to one, after so arranging, is ensureing stability While, it is easier to stir shifting block 18, regulate more laborsaving and quick.

Operation principle: under the effect of the first spring 13, the drive rod of microswitch 6 is in pressing shape by stopping connecting rod 7 of fining away State, now microswitch 6 is off, and when penholder enters knife rest 4 so that knife rest 4 has an action pressed down, Thus drive output gear 16 to move down, then touch the second feeler lever 10 so that start the driving of connecting rod 8 and microswitch 6 Bar supports the one end closed and tilts to away from microswitch 6 direction, so that microswitch 6 opens energising, now motor 3 starts Work carries out the process cutting pen, and when pen is sharpened, nib can withstand on a resistance block 5, along with cutting proceeding of pen, nib A resistance block 5 there is is the power pressed down, thus touches the first push rod 20, and the first push rod 20 drives regulating block 17, regulating block 17 can be touched the first feeler lever 9, so that stopping connecting rod 7 of fining away supports the one end closed to the most micro-with the drive rod of microswitch 6 The direction of dynamic switch 6 tilts, again by the drive rod pressing of microswitch 6 so that microswitch 6 open-circuit line, and now electricity Machine 3 quits work；And owing to the middle part stopping connecting rod 7 of fining away is the one end being hinged on and starting connecting rod 8, and start connecting rod 8 Connecting rod 7 pressing microswitch 6 is stopped by fining away；During then after stopping of fining away, pen is extracted, a resistance block 5 is first multiple Position, resets after knife rest 4, and stopping connecting rod 7 of fining away has been backed down by drive rod, and now microswitch 6 re-closes circuit, Motor 3 works so that knife rest 4 also can rotate, and resets with back tool rest 4, under the elastic force effect of the first spring 13, starts even One end of bar 8 makes again to fine away and stops connecting rod 7 by the drive rod pressing again of microswitch 6, now microswitch 6 striping Road, during pulling out pen at this, knife rest 4 may proceed to rotate 2～5 circles (the concrete number of turns is determined) according to actual Demand Design, this Sample is also easier to regard to hobboing cutter disengage with nib, and can be effectively prevented the blade of hobboing cutter after originally having cut stopping still having part the most embedding Extracting pencil on pen core or a shell causes the situation of disconnected core to occur, and the fineness at pencil cutting position is preferable；And After cover plate 24 is opened, the second push rod 25 is no longer propped up by cover plate 24, then the second push rod 25 under the effect of the second spring 30 to Upper movement, and one end of safe connecting rod 26 under the effect of the second spring 30 support be combined in make on the drive rod of microswitch 6 micro- Dynamic switch 6 is off, even if now knife rest is pressed for 4 times, and the drive rod stopping connecting rod 7 no longer to microswitch 6 of fining away Under press, microswitch 6 is still within off-state, it is impossible to start motor 3, only can be after cover plate 24 at lid, safe connecting rod 26 One end just can disengage with the drive rod of microswitch 6, now fining away stops connecting rod 7 and just can play the action of microswitch 6 Control the effect of motor 3, thus ensure the safety used.

Above example is only preferred embodiment of the present utility model, and this utility model is not limited only to above example and also allows for other Structure change, all in this utility model rights to independence claimed range change, all belong to this utility model protection domain.

Claims

1. an electric pencil-sharpening unit, it includes housing (1) and is positioned at the pedestal (2) of housing (1), motor (3), cutter Frame (4) and transmission component, described pedestal (2) is connected with housing (1), and described motor (3) and transmission component are both connected to On pedestal (2), described knife rest (4) is rotationally connected with housing (1), is provided with a resistance block (5), and knife rest in knife rest (4) (4) it is connected with the outfan of transmission component, it is characterised in that: being provided with microswitch (6) in described housing (1), fine motion is opened Closing (6) to electrically connect with motor (3), described pedestal (2) is provided with the linkage for controlling microswitch (6), institute State one end of linkage to fit with microswitch (6), the other end of linkage respectively with a resistance block (5) and transmission component Outfan support close.

Electric pencil-sharpening unit the most according to claim 1, it is characterised in that: described linkage includes being positioned at housing (1) In sharpening stop connecting rod (7) and start connecting rod (8), fine away stop connecting rod (7) and startup connecting rod (8) all with pedestal (2) Connecting, described stopping connecting rod (7) of fining away above and is respectively equipped with the first feeler lever (9) and the second feeler lever (10) in startup connecting rod (8), And fine away and stop one end and the microswitch (6) of connecting rod (7) and fit, start one end of connecting rod (8) also with microswitch (6) Laminating, described first feeler lever (9) supports conjunction to conjunction, the second feeler lever (10) with the outfan of transmission component with hindering a block (5)； When penholder enters knife rest (4) so that the outfan of transmission component touches the second feeler lever (10), so that start connecting rod (8) One end is touched microswitch (6) and is started motor (3)；And pen is when being sharpened, nib touches a resistance block (5), and hinders a block (5) Drive the first feeler lever (9), stop connecting rod (7) shake-up microswitch (6) so that fine away and close motor (3).

Electric pencil-sharpening unit the most according to claim 2, it is characterised in that: the middle part of described startup connecting rod (8) and pedestal (2) hinged, start connecting rod (8) one end and be connected with the lower end of the second feeler lever (10), the upper end of the second feeler lever (10) and biography The outfan moving assembly supports conjunction, and the described middle part stopping connecting rod (7) of fining away is hinged with startup connecting rod (8), stopping connecting rod of fining away (7) one end is connected with the lower end of the first feeler lever (9), and the upper end of the first feeler lever (9) is supported with a resistance block (5) and closed, and sharpening is stopped Only connecting rod (7) other end is fitted with microswitch (6), and described startup connecting rod (8) other end stops connecting rod (7) with fining away The spacing connection of the other end.

Electric pencil-sharpening unit the most according to claim 2, it is characterised in that: the housing (1) of described pedestal (2) lower section Being provided with bottom (11), described microswitch (6) is microswitch open in usual, and described startup connecting rod (8) is " U " word Type structure, the bottom starting connecting rod (8) " U " font structure is hinged with pedestal (2), starts the upper end of connecting rod (8) one end Face is connected with the lower end of the second feeler lever (10), and the upper end of the second feeler lever (10) is supported with the outfan of transmission component and closed, and starts The position contrary with the second feeler lever (10), connecting rod (8) one end is provided with first protruding (12), the first protruding (12) and bottom (11) being provided with the first spring (13) between, the described middle part fining away stopping connecting rod (7) is hinged on startup connecting rod (8) other end The position of close end, the upper surface of stopping connecting rod (7) one end of fining away is connected with the lower end of the first feeler lever (9), the first feeler lever (9) upper end is supported with a resistance block (5) and is closed, and fining away stops connecting rod (7) other end and microswitch (6) and fit, described in open Dynamic connecting rod (8) other end is provided with tray (14), and tray (14) is positioned to fine away and stops the lower section of connecting rod (7) other end, and torr Block (14) upper surface and the lower surface laminating stopping connecting rod (7) other end of fining away；Under the effect of the first spring (13), cut Point stops connecting rod (7) other end and is pressed together in microswitch (6) so that microswitch (6) is closed.

5. according to the electric pencil-sharpening unit described in claim 3 or 4, it is characterised in that: described transmission component includes input gear And output gear (16), described input gear (15) and output gear (16) are all rotatably connected on pedestal (2) (15) Upper surface, input gear (15) engages with output gear (16), and the outfan of input gear (15) and motor (3) is nibbled Closing, output gear (16) is in transmission connection with knife rest (4), and described first feeler lever (9) is positioned at the lower section of output gear (16), And the first lower surface laminating of upper surface and output gear (16) of feeler lever (9).

Electric pencil-sharpening unit the most according to claim 2, it is characterised in that: described second feeler lever (10) and a resistance block (5) Between be provided with regulation cut a regulating block for nib thickness (17), regulating block (17) is slidably connected at the lower surface of pedestal (2), Described housing (1) is provided with shifting block (18), and shifting block (18) is connected by driving lever (19) with regulating block (17), described tune The lower surface of locking nub (17) is plane, and the upper surface of regulating block (17) is inclined-plane, and the lower surface of regulating block (17) and the Fitting in one feeler lever (9) upper surface, described resistance block (5) is slidably connected on knife rest (4), the lower slide of knife rest (4) Connect and have the first push rod (20), the upper end of described first push rod (20) and a resistance block (5) laminating, the first push rod (20) Lower end is through the upper surface laminating of pedestal (2) and transmission component and regulating block (17).

Electric pencil-sharpening unit the most according to claim 6, it is characterised in that: described knife rest (4) upper resistance block (5) is right The position answered is provided with lateral opening (21).

Electric pencil-sharpening unit the most according to claim 6, it is characterised in that: described regulating block (17) is " H " type structure, The side of " H " type structure is wedge structure, the opposite side side of the being strip structure of " H " type structure；The lower surface of wedge structure is Plane, the upper surface of wedge structure is inclined-plane, and fit with the second feeler lever (10) upper surface in the lower surface of wedge structure, wedge shape The lower end laminating of the upper surface of structure and the first push rod (20)；The upper surface of described side's strip structure is provided with opening along its length Mouth groove (22), described pedestal (2) lower surface is provided with and coordinates the guide rail (23) guided with open slot (22).

Electric pencil-sharpening unit the most according to claim 2, it is characterised in that: described housing (1) is provided with pen bits and discharges Mouthful, it is provided with cover plate (24) at pen bits outlet, between described cover plate (24) and microswitch (6), is provided with release mechanism；When When cover plate (24) is opened, it is impossible to open motor (3).

Electric pencil-sharpening unit the most according to claim 9, it is characterised in that: described release mechanism includes the shell that is slidably connected The second push rod (25) in body (1) and the safe connecting rod (26) being slidably connected on pedestal (2), pedestal (2) is provided with Through hole (27), described safe connecting rod (26) upper end is slidably connected in through hole (27), and safe connecting rod (26) upper end and the Fitting in two push rods (25) lower end, described safe connecting rod (26) lower end is provided with bending (28), the upper surface of described bending (28) Fit with microswitch (6), and the lower surface of bending (28) be provided with second protruding (29), described second protruding (29) with Being provided with the second spring (30) between bottom (11), fits with cover plate (24) in the upper end of described second push rod (25)；Work as cover plate (24) when opening, under the effect of the second spring (30), bending (28) is by microswitch (6) pressing so that fine motion is opened Close (6) to touch and motor (3) cannot be opened.