CN208277710U

CN208277710U - A kind of hand held pencil sharpener

Info

Publication number: CN208277710U
Application number: CN201721789628.XU
Authority: CN
Inventors: 张涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-12-19
Filing date: 2017-12-19
Publication date: 2018-12-25
Anticipated expiration: 2027-12-19

Abstract

The utility model discloses a kind of hand held pencil sharpeners, driving pillar stand is equipped in shell, transmission shaft is rotatably arranged in driving pillar stand, progressive gear is sheathed on transmission shaft and can rotate synchronously, first gear is sheathed on transmission shaft, first gear offers helical teeth in transmission backwards to one end of progressive gear, second gear is engaged with first gear, second gear and penknife structure are sequentially connected, transmission shaft is fixedly connected with rotation swing arm in helical teeth in being driven, the both ends of rotation swing arm are rotatably connected to the pusher dog for stirring transmission with helical teeth in transmission respectively, helical teeth in being driven, the number of teeth of progressive gear and first gear is gradually increased, the number of teeth of second gear is adapted with the number of teeth of first gear.It is converted by helical teeth driving in being driven and reaches the turnning circle of more penknife structures, can cut pen faster using the smaller power of older money, cuts that pen work is more easy and convenient, and the utilization efficiency of penknife is higher.

Description

A kind of hand held pencil sharpener

Technical field

The utility model relates to a stationeries, more specifically, it relates to a kind of pencil sharpener.

Background technique

Pencil sharpener is the tool to sharpen a pencil, can be made various shape.The pencil sharpener of mainstream be hand-rail type and electrodynamic type, Hand-rail type needs armrest swinging handle to cut pen, relatively elaborate for children, and electrodynamic type is laborsaving, but structure is complicated, at This height, noise is larger, needs to power.

In order to solve above-mentioned two problems simultaneously, there is hand held pencil sharpener, this kind of pencil sharpener include front cover, shell, Knife core, automatically into a mechanism, handle, internal gear, driving cog, rack gear, rear cover, torsional spring；Shell includes two parts, and a part accommodates Penknife structure, another part are to hold part, constitute mechanism of shaking hands with handle；Handle axis is connected on shell, fixed on mobile phone axis Rack gear, one end of torsional spring are fixed on rack gear, and the other end is fixed on handle；Rack gear and transmission tooth engagement, driving cog and internal gear Engagement, internal gear and knife core cooperate；Automatically it is sequentially fixed in shell into a mechanism, knife core, internal gear, driving cog.This kind knot Structure is rotated further by when cutting, is that handle rotates, driving cog is driven once on year-on-year basis, and last internal gear band moving knife core rotates synchronously one Under, thus pen is quickly cut, needing hand, ceaselessly, transmission ratio is low, waste of manpower for the rotation of pressing belt moving knife core.

Utility model content

In view of the deficienciess of the prior art, leading to the purpose of this utility model is to provide a kind of hand held pencil sharpener It crosses helical teeth driving in transmission and is converted and reach the turnning circle of more penknife structures, the smaller power of the older money of use can be more Fast cuts pen, cut pen work it is more easy and convenient, the utilization efficiency of penknife is higher.

To achieve the above object, the utility model provides following technical solution:

A kind of hand held pencil sharpener, including shell, handle, transmission mechanism and penknife structure, the handle is towards shell Inside is equipped with rack gear, and one is rotatably connected in the shell and provides the torsional spring of restoring force for handle, the handle can by torsional spring That replys is connected with transmission mechanism, and the transmission mechanism includes first gear, second gear, the progressive tooth being engaged with rack The transmission shaft of wheel and transmission connection first gear and progressive gear, the shell is interior to be equipped with driving pillar stand, and the transmission shaft can Rotation is arranged in driving pillar stand, and the progressive gear is sheathed on transmission shaft and can rotate synchronously, the first gear set On transmission shaft, the first gear offers helical teeth in transmission, the second gear and the backwards to one end of progressive gear The engagement of one gear, the second gear and penknife structure are sequentially connected, and the transmission shaft is fixedly connected in helical teeth in being driven Swing arm is rotated, the both ends of the rotation swing arm are rotatably connected to the pusher dog for stirring transmission with helical teeth in transmission respectively, described The number of teeth of helical teeth, progressive gear and first gear is gradually increased in being driven, the number of teeth of the second gear and the tooth of first gear Number is adapted.

As a further improvement of the above technical scheme:

The rotation swing arm is arranged to the strip with two extended end portion, and the pusher dog is rotatably connected on pendulum rotating respectively The both ends of arm, the end of the pusher dog are arranged to the triangle to match with the interior helical teeth of transmission.

The penknife structure includes central rotating shaft, cuts a hobboing cutter, hobboing cutter gear and the driving internal tooth set on housing bottom Wheel, the central rotating shaft towards offer outside shell for rod-shaped pen wear into cut a chamber, one end of the central rotating shaft and the Two gear drives engagement, hobboing cutter gear are rotationally connected with the other end of central rotating shaft, and the hobboing cutter gear is nibbled with driving internal gear It closes, a hobboing cutter concentric shafts of cutting connect in hobboing cutter gear, and a chamber of cutting offers and the outer wall of hobboing cutter gear is tangent cuts Mouth.

The one end of the central rotating shaft is fixedly connected with first gear, the first gear and transmission mechanism engaged transmission.

By using above-mentioned technical proposal, manpower grip pressure handle carrys out drive rack, and handle is resetted by torsional spring, to drive Progressive gear rotation, transmission shaft can rotate synchronously while progressive gear rotates, the pendulum rotating being fixedly connected in this way with transmission shaft Arm can rotate synchronously, and be driven interior helical teeth to stir by the pusher dog for rotating swing arm end, and then drive first gear rotation, Second gear can be with first gear engaged transmission penknife structure in this way；Select one as transmission mechanism of helical gear Point, to constitute a ratchet mechanism to carry out transmission and achieve the effect that one direction moves back and forth, make an uproar during pen is cut in transmission Sound is small, and operation is more steady, and the number of teeth that the ratio that the number of teeth of progressive gear is arranged here is driven interior helical teeth is big, passes through hand in people When rack gear engagement on handle drives progressive gear, progressive gear rotates half-turn, it will drives first by helical teeth in being driven Gear rotates more than the amount of half-turn, this makes it possible to drive penknife structure to carry out cutting pen movement by the transmission of second gear, Increase the transmission ratio of transmission mechanism by the variation of the number of gears in this way, even if handle is smaller by the circle number of rack drives, It can be converted by helical teeth driving in being driven and reach the turnning circle of more penknife structures, the smaller power of the older money of use is just Pen can be cut faster, cut pen work it is more easy and convenient, the utilization efficiency of penknife is higher.

Detailed description of the invention

Fig. 1 is the outline drawing of the utility model hand held pencil sharpener embodiment；

Fig. 2 is the structural schematic diagram one of the utility model hand held pencil sharpener embodiment；

Fig. 3 is the structural schematic diagram two of the utility model hand held pencil sharpener embodiment；

Fig. 4 is the structural schematic diagram three of the utility model hand held pencil sharpener embodiment.

Appended drawing reference:

1, shell；11, driving pillar stand；2, handle；21, rack gear；22, torsional spring；3, transmission mechanism；31, first gear；32, Second gear；33, helical teeth in being driven；34, swing arm is rotated；35, transmission shaft；36, pusher dog；37, progressive gear；4, penknife structure； 41, central rotating shaft；411, pen mouth is cut；412, a chamber is cut；42, a hobboing cutter is cut；43, hobboing cutter gear；44, internal gear is driven.

Specific embodiment

The utility model hand held pencil sharpener embodiment is described further referring to figs. 1 to Fig. 4.

A kind of hand held pencil sharpener, including shell 1, handle 2, transmission mechanism 3 and penknife structure 4,2 direction of handle It is equipped with rack gear 21 inside shell 1, one is rotatably connected in the shell 1 and provides the torsional spring 22 of restoring force, the handle for handle 2 2 are connected by the way that torsional spring 22 is recoverable with transmission mechanism 3, and the transmission mechanism 3 includes first gear 31, second gear 32, the transmission shaft 35 of the progressive gear 37 and be sequentially connected first gear 31 and progressive gear 37 that are engaged with rack gear 21, it is described Driving pillar stand 11 is equipped in shell 1, the transmission shaft 35 is rotatably arranged in driving pillar stand 11,37 sets of the progressive gear If on to transmission shaft 35 and can rotate synchronously, the first gear 31 is sheathed on transmission shaft 35, and the first gear 31 is backwards One end of progressive gear 37 offers helical teeth 33 in transmission, and the second gear 32 is engaged with first gear 31, second tooth Wheel 32 is sequentially connected with penknife structure 4, and the transmission shaft 35 is fixedly connected with rotation swing arm 34 in being driven in helical teeth 33, described The both ends of rotation swing arm 34 be rotatably connected to respectively for be driven in helical teeth 33 stir the pusher dog 36 of transmission, in the transmission tiltedly The number of teeth of tooth 33, progressive gear 37 and first gear 31 is gradually increased, the number of teeth and the first gear 31 of the second gear 32 The number of teeth is adapted.

By using above-mentioned technical proposal, manpower grip pressure handle 2 carrys out drive rack 21, and handle 2 is resetted by torsional spring 22, from And progressive gear 37 is driven to rotate, transmission shaft 35 can rotate synchronously while progressive gear 37 rotates, solid with transmission shaft 35 in this way Surely the rotation swing arm 34 connected can rotate synchronously, and be driven interior helical teeth to stir by the pusher dog 36 for rotating 34 end of swing arm 33, and then first gear 31 is driven to rotate, such second gear 32 can be with 31 engaged transmission penknife structure 4 of first gear ?；The a part of helical gear as transmission mechanism 3 is selected, to constitute a ratchet mechanism to carry out transmission and reach folk prescription yearning The effect moved again, noise is small during pen is cut in transmission, and operation is more steady, and the number of teeth of progressive gear 37 is arranged here The number of teeth than helical teeth 33 in being driven is big, progressive when people drive progressive gear 37 by the engagement of rack gear 21 on handle 2 Gear 37 rotates half-turn, it will the amount that half-turn is rotated more than by the drive of helical teeth 33 first gear 31 in being driven, this makes it possible to It drives penknife structure 4 to carry out cutting pen movement by the transmission of second gear 32, increases biography by the variation of the number of gears in this way The transmission ratio of motivation structure 3 can also be driven even if handle 2 is smaller by the circle number that rack gear 21 drives by helical teeth 33 in being driven It is converted and reaches the turnning circle of more penknife structures 4, pen can be cut faster using the smaller power of older money, cut pen It works more easy and convenient, the utilization efficiency of penknife is higher.

The rotation swing arm 34 is arranged to the strip with two extended end portion, it can be provided diamond shape as shown in the figure, The middle part of either rectangle, rotation swing arm 34 is fixedly attached on transmission shaft 35, the pusher dog 36 is rotatably connected on respectively The both ends of movable pendulum arm 34 guarantee that the length of helical teeth 33 in the conflict transmission of both ends pusher dog 36 can match, the end of the pusher dog 36 Portion is arranged to the triangle to match with the interior helical teeth 33 of transmission.Progressive gear is driven by handle 2 and rack gear 21 in people in this way When 37 rotation, swing arm can have the function that transmit kinetic energy by the stable promotion first gear 31 of pusher dog 36, triangle 36 end of pusher dog can more be adapted to the angle for being driven interior helical teeth 33, and transmission kinetic energy is more stable.

As shown, the penknife structure 4 includes central rotating shaft 41, cuts a hobboing cutter 42, hobboing cutter gear 43 and be set to shell The driving internal gear 44 of 1 bottom of body, the central rotating shaft 41 towards offer outside shell 1 for rod-shaped pen wear into cut a chamber 412, one end of the central rotating shaft 41 is engaged with the transmission of second gear 32, and hobboing cutter gear 43 is rotationally connected with central rotating shaft 41 The other end, the hobboing cutter gear 43 are engaged with driving internal gear 44, and 42 concentric shafts of a hobboing cutter of cutting connect in hobboing cutter gear 43, It is described cut a chamber 412 offer with the outer wall of hobboing cutter gear 43 it is tangent cut pen mouth 411.

In order to allow cut a hobboing cutter 42 can it is more smooth and it is faster rotation cut pen, be set to cut a hobboing cutter 42 with one heart join Dynamic hobboing cutter gear 43 links with central rotating shaft 41 and driving internal gear 44, and such hobboing cutter gear 43 is along driving internal gear 44 When revolution, concentric driving cut a hobboing cutter 42 will continuous rotation, thus by insertion cut pen mouth 411 pencil cutting it is complete At.

Linkage between concentric rotating shafts and transmission mechanism 3, the one end that can choose the central rotating shaft 41 are fixedly connected First gear 31, the first gear 31 and 3 engaged transmission of transmission mechanism.

The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.

Claims

1. a kind of hand held pencil sharpener, including shell, handle, transmission mechanism and penknife structure, the handle is towards in shell Portion is equipped with rack gear, and one is rotatably connected in the shell and provides the torsional spring of restoring force for handle, the handle can be extensive by torsional spring Multiple is connected with transmission mechanism, it is characterised in that: the transmission mechanism includes first gear, second gear, nibbles with rack gear The transmission shaft of the progressive gear and be sequentially connected first gear and progressive gear that close, the shell is interior to be equipped with driving pillar stand, institute It states transmission shaft to be rotatably arranged in driving pillar stand, the progressive gear is sheathed on transmission shaft and can rotate synchronously, described First gear is sheathed on transmission shaft, and the first gear offers helical teeth in transmission backwards to one end of progressive gear, and described the Two gears are engaged with first gear, and the second gear and penknife structure are sequentially connected, and the transmission shaft is in being driven in helical teeth It is fixedly connected with rotation swing arm, the both ends of the rotation swing arm are rotatably connected to respectively for stirring transmission with helical teeth in transmission Pusher dog, the number of teeth of helical teeth, progressive gear and first gear is gradually increased in the transmission, the number of teeth of the second gear and first The number of teeth of gear is adapted.

2. hand held pencil sharpener according to claim 1, it is characterised in that: the rotation swing arm is arranged to have two to extend The strip of end, the pusher dog are rotatably connected on the both ends of rotation swing arm respectively, and the end of the pusher dog is arranged to and passes The triangle that helical teeth matches in dynamic.

3. hand held pencil sharpener according to claim 1 or 2, it is characterised in that: the penknife structure include central rotating shaft, A hobboing cutter, hobboing cutter gear and the driving internal gear set on housing bottom are cut, the central rotating shaft offers confession towards shell outside Rod-shaped pen wear into cut a chamber, one end of the central rotating shaft is engaged with second gear transmission, and hobboing cutter gear is rotationally connected with The other end of central rotating shaft, the hobboing cutter gear are engaged with driving internal gear, and a hobboing cutter concentric shafts of cutting connect in hobboing cutter gear On, it is described cut a chamber offer with the outer wall of hobboing cutter gear it is tangent cut pen mouth.

4. hand held pencil sharpener according to claim 3, it is characterised in that: the one end of the central rotating shaft is fixedly connected First gear, the first gear and transmission mechanism engaged transmission.