CN203246234U

CN203246234U - Pencil sharpener

Info

Publication number: CN203246234U
Application number: CN 201320198746
Authority: CN
Inventors: 邱卫东
Original assignee: DONGGUAN MINMAO ELECTRICAL APPLIANCES Co Ltd
Current assignee: DONGGUAN MINMAO ELECTRICAL APPLIANCES Co Ltd
Priority date: 2013-04-18
Filing date: 2013-04-18
Publication date: 2013-10-23
Anticipated expiration: 2023-04-18

Abstract

The utility model discloses a pencil sharpener which comprises a cutting mechanism, an isolating structure, a knife rest and a fixing sleeve. The fixing sleeve is connected to the knife rest in a pivoted mode and is of a hollow structure. The hollow structure forms an inner ring gear which penetrates through one end of the fixing sleeve. The knife rest is provided with a cutting cavity which allows pen-shaped objects to stretch in. The cutting mechanism comprises a knife pivot, hobs which are mounted on the knife pivot at intervals, and a transmission gear, wherein the hobs are obliquely mounted on the knife rest through the knife pivot and stretch into the cutting cavity, and the transmission gear stretches into the inner ring gear to be meshed with the inner ring gear. The knife pivot is sleeved with the isolating structure in a clearance fit mode, and the isolating structure is placed between the hobs and the transmission gear and covers the inner ring gear. Thus, the pencil sharpener can prevent chippings and dust generated in the cutting process of the pen-shaped objects from entering the inner ring gear to guarantee that the transmission gear and the inner ring gear can be normally meshed with each other, on one hand, noise generated between the transmission gear and the inner ring gear is lowered, on the other hand, the abrasion of the transmission gear and the inner ring gear is reduced, and the service life of the pencil sharpener is prolonged.

Description

Pencil sharpener

Technical field

The utility model relates to the stationery field, relates in particular to a kind of chip that the lip pencil thing produces and dust of preventing and enter the pencil sharpener in the ring gear in the planing process.

Background technology

Along with improving constantly of socioeconomic development and people's living standard, for people provide more and more abundanter office appliance, and pencil sharpener is exactly a kind of in many office appliances.

As everyone knows, the people's lip pencil thing (such as pencil) of planing that appears as of pencil sharpener provides great convenience, planes time of pencil thereby saved people, therefore, favors so that pencil sharpener more and more is subject to people.

But, in existing pencil sharpener, pencil can be easy to enter in the ring gear of pencil sharpener at chip and the dust that the planing process produces, will hinder travelling gear on the pencil sharpener and the engagement between the ring gear and enter into chip in the ring gear of pencil sharpener and dust, on the one hand so that produce noise between travelling gear and the ring gear, can destroy travelling gear and ring gear on the other hand, thereby cause the destruction of pencil sharpener, correspondingly shorten the life-span of pencil sharpener.

Therefore, be badly in need of to want a kind of pencil sharpener that can prevent that chip that the lip pencil thing produces and dust from entering in the ring gear in the planing process to overcome above-mentioned defective.

The utility model content

The purpose of this utility model is to provide a kind of chip that the lip pencil thing produces in the planing process and dust of preventing to enter the pencil sharpener in the ring gear.

For realizing above-mentioned purpose, the utility model provides a kind of applicable pencil sharpener of being fined away in the end of lip pencil thing, comprises that planing mechanism, isolation structure, knife rest reach the fixed cover that articulates and be hollow structure with described knife rest.Described hollow structure forms one and runs through the ring gear that one of described fixed cover is held, described knife rest offers the planing chamber of stretching into for described lip pencil thing, described planing mechanism comprises a cutter shaft and is isolated hobboing cutter and the travelling gear that is installed on the described cutter shaft, described hobboing cutter tilts to be installed on the described knife rest by described cutter shaft and stretches in the described planing chamber, described travelling gear stretches into described ring gear and is meshed with this ring gear, described isolation structure is on the described cutter shaft of being placed in of matched in clearance, and described isolation structure is between described hobboing cutter and travelling gear and hide described ring gear.

Preferably, described isolation structure comprises a baffle plate and a dustproof sheet, described baffle plate is fixedly arranged on the described knife rest, and described dustproof sheet is on the described cutter shaft of being placed in of matched in clearance and between described hobboing cutter and travelling gear, and described dustproof sheet splices mutually with described baffle plate and hides described ring gear.

Preferably, described baffle plate and described knife rest are integrated formed structure.

Preferably, described baffle plate offers for what described travelling gear placed and places the hole, is placed in the described hole that places of dustproof sheet sealing on the described cutter shaft.

Preferably, described planing mechanism has two at least, described isolation structure comprises the dustproof sheet one to one with described planing mechanism, each described dustproof sheet is on the cutter shaft in the corresponding described planing mechanism of being placed in of matched in clearance and between the hobboing cutter and travelling gear in this planing mechanism, and all described dustproof sheets mutually splice and hide described ring gear.

Preferably, described dustproof sheet offers the installing hole that is matched in clearance with described cutter shaft along the axis direction of described cutter shaft.

Preferably, described dustproof sheet is the separation groove that elasticity and an end are connected with described installing hole along radially offering of described cutter shaft.

Preferably, also be provided with the clamp that a conflict clamps described dustproof sheet on the described knife rest.

Preferably, described planing chamber is the taper identical with the gradient of described hobboing cutter.

Preferably, the articulated section of described knife rest and described fixed cover is positioned at described ring gear.

Compared with prior art, because isolation structure of the present utility model is being placed on the cutter shaft of matched in clearance, and isolation structure is between hobboing cutter and travelling gear and hide ring gear, so that preventing the lip pencil thing, pencil sharpener of the present utility model enters in the ring gear at chip and the dust that the planing process produces, thereby guaranteed the normal engagement between travelling gear and the ring gear, greatly reduce on the one hand the noise that produces between travelling gear and the ring gear, so that the more stable and safety of the planing of lip pencil thing, can reduce on the other hand the wearing and tearing of travelling gear and ring gear, correspondingly prolong the service life of pencil sharpener of the present utility model.

Description of drawings

Fig. 1 is the schematic perspective view of the pencil sharpener of the utility model the first embodiment.

Fig. 2 is the exploded view of Fig. 1.

Fig. 3 be the utility model the first embodiment pencil sharpener hobboing cutter, travelling gear and dustproof sheet the assembling one time-out three-dimensional structure diagram.

Fig. 4 is the three-dimensional structure diagram of dustproof sheet of the pencil sharpener of the utility model the first embodiment.

Fig. 5 is the schematic perspective view of the pencil sharpener of the utility model the second embodiment.

Fig. 6 is the exploded view of Fig. 5.

The specific embodiment

With reference now to accompanying drawing, describe embodiment of the present utility model, similar element numbers represents similar element in the accompanying drawing.

See also Fig. 1, the first embodiment that has showed pencil sharpener of the present utility model, and in conjunction with Fig. 2 to Fig. 3, the pencil sharpener 100 of present embodiment comprises that planing mechanism 10, isolation structure 20, knife rest 30 reach the fixed cover 40 that articulates and be hollow structure 41 with knife rest 30, hollow structure 41 forms the ring gear 42 of always wearing one of fixed cover 40 end, knife rest 30 offers the planing chamber 31 of stretching into for the lip pencil thing, specifically, knife rest 30 is positioned at ring gear 42 with the articulated section of fixed cover 40, with the structure of the pencil sharpener 100 of simplifying present embodiment; Planing mechanism 10 comprises a cutter shaft 11 and is isolated hobboing cutter 12 and the travelling gear 13 that is installed on the cutter shaft 11, hobboing cutter 12 tilts to be installed on the knife rest 30 by cutter shaft 11 and stretches in the planing chamber 31, planing chamber 31 is more excellent for to be the taper identical with the gradient of hobboing cutter 12, better lip pencil thing (such as pencil) is planed; Preferentially, in the present embodiment, planing mechanism 10 is set to one, and the quantity of the mechanism 10 of certainly planing is not limited to this, can also select the quantity of planing mechanism 10 according to different user demands; Travelling gear 13 stretches into ring gear 42 and is meshed with this ring gear 42, isolation structure 20 is being placed on the cutter shaft 11 of matched in clearance, and isolation structure 20 is between hobboing cutter 12 and travelling gear 13 and hide ring gear 42, thereby prevents that the lip pencil thing from entering in the ring gear 42 at chip and the dust that the planing process produces.More specifically, as follows:

Than the superior, isolation structure 20 comprises a baffle plate 21 and a dustproof sheet 22, baffle plate 21 is fixedly arranged on the knife rest 30, dustproof sheet 22 be matched in clearance be placed on the cutter shaft 11 and between hobboing cutter 12 and travelling gear 13, and dustproof sheet 22 splices mutually with baffle plate 21 and can better hide ring gear 42, prevent that better the lip pencil thing from entering in the ring gear 42 at chip and the dust that the planing process produces so that isolation structure 20 can play, and simplify the structure of isolation structure 20.Particularly, baffle plate 21 is integrated formed structure with knife rest 30, certainly baffle plate 21 is not limited to this with the syndeton of knife rest 30, can also select neatly according to actual conditions other syndeton, for example removably to be connected in knife rest 30 first-class in order baffle plate 21 can be, and baffle plate 21 offers for what travelling gear 13 placed and places hole 211, specifically, the outline that places hole 211 and travelling gear 13 is matched in clearance, so that travelling gear 13 can place hole 211 interior rotations more flexibly swimmingly, and dustproof sheet 22 sealings that are placed on the cutter shaft 11 place hole 211, preventing that more effectively the lip pencil thing from entering in the ring gear 42 by placing hole 211 at chip and the dust that the planing process produces, thereby guarantee the engaged transmission between ring gear 42 and the travelling gear 13.

Simultaneously, dustproof sheet 22 offers the installing hole 221 that is matched in clearance with cutter shaft 11 along the axis direction of cutter shaft 11, so that dustproof sheet 22 does not rotate with hobboing cutter 12 or travelling gear 13, reduce on the one hand dustproof sheet 22 occupancy to the space when rotating, thereby simplified further the structure of the pencil sharpener 100 of present embodiment; On the other hand, reduce the wearing and tearing that dustproof sheet 22 brings because of friction, thereby prolonged the service life of dustproof sheet 22; More excellently be, dustproof sheet 22 is the separation groove 222 that elasticity and an end are connected with installing hole 221 along radially offering of cutter shaft 11, thereby when dustproof sheet 22 is installed, only need break separation groove 222 off with the fingers and thumb can be stuck in dustproof sheet 22 between travelling gear 13 and the hobboing cutter 12, so that the fitting operation of dustproof sheet 22 is more convenient simple.

Moreover, also being provided with the clamp 32 that a conflict clamps dustproof sheet 22 on the knife rest 30,32 pairs of dustproof sheets of this clamp 22 carry out more solid and reliable location to be fixed, and makes dustproof sheet 22 hide more closely ring gear 42, effectively prevents the loosening of dustproof sheet 22.Specifically, also offer an insertion through hole 33 for lip pencil thing insertion planing chamber 31 on the knife rest 30.

See also Fig. 5, the second embodiment that has showed pencil sharpener of the present utility model, and in conjunction with Fig. 6, the structure of the pencil sharpener 100` of present embodiment and the pencil sharpener 100 of the first embodiment is basic identical, the difference and only be, the planing mechanism 10 of the pencil sharpener 100` of present embodiment is provided with two, isolation structure 20 comprises and the one to one dustproof sheet 22 of mechanism 10 of planing, each dustproof sheet 22 is on the cutter shaft 11 in the corresponding planing mechanism 10 of being placed in of matched in clearance, and between the hobboing cutter 12 and travelling gear 13 in this planing mechanism 10, and all dustproof sheets 22 splice and covering ring gear 42 mutually, thereby simplified the structure of isolation structure 20, also simplified baffle plate 21 in the pencil sharpener 100 that has omitted the first embodiment; Be understandable that in other embodiments, planing mechanism 10 can not wait for three, four or five, and dustproof sheet 22 be quantity with planing mechanism 10 is one to one.

In conjunction with Fig. 1 and Fig. 2, operation principle to the pencil sharpener 100 of the utility model the first embodiment is elaborated: the lip pencil thing that at first will need to plane is inserted in the planing chamber 31, and order about knife rest 30 and rotate, the knife rest 30 that rotates is done the rotation of engagement in ring gear 42 with nutating gear 13, thereby make in the process of hobboing cutter 12 with knife rest 30 revolution, also being transmitted simultaneously gear 13 drives and the generation rotation, thereby the lip pencil thing is carried out planing operation, owing to splicing mutually with baffle plate 21, the dustproof sheet 22 of isolation structure 20 hidden ring gear 42, so planing chamber 31 is kept apart with ring gear 42, thereby prevent that effectively the lip pencil thing from entering in the ring gear 42 at chip and the dust that the planing process produces, so that the pencil sharpener 100 of present embodiment can be more safety and the stable lip pencil thing is planed, correspondingly prolonged service life of the pencil sharpener 100 of present embodiment.

In conjunction with Fig. 5 and Fig. 6, operation principle to the pencil sharpener 100` of the utility model the second embodiment is elaborated: because the distinctive points of the pencil sharpener 100 of the pencil sharpener 100` of present embodiment and the first embodiment only is: the planing mechanism 10 of the pencil sharpener 100` of present embodiment is provided with two, so so that the pencil sharpener 100` of present embodiment can carry out two-sided planing start to the end of inserting the lip pencil thing in the planing chamber 31 simultaneously, thereby improve the planing efficient of the pencil sharpener 100` of present embodiment, and the mode of ordering about planing mechanism 10 for the knife rest 30 that rotates, all be basically the same as those in the first embodiment, so do not repeat them here.

Compared with prior art, because isolation structure 20 of the present utility model is being placed on the cutter shaft 11 of matched in clearance, and isolation structure 20 is between hobboing cutter 12 and travelling gear 13 and hide ring gear 42, so that pencil sharpener 100 of the present utility model, 100` can prevent that the lip pencil thing from entering in the ring gear 42 at chip and the dust that the planing process produces, thereby guaranteed the normal engagement between travelling gear 13 and the ring gear 42`, greatly reduce on the one hand the noise that produces between travelling gear 13 and the ring gear 42, so that the more stable and safety of the planing of lip pencil thing, can reduce on the other hand travelling gear 13 and ring gear 42 wearing and tearing, correspondingly prolong pencil sharpener 100 of the present utility model, the service life of 100`.

Certainly; described above is preferred embodiment of the present utility model; certainly; can not limit with this interest field of the utility model, the above-mentioned specific embodiment only is schematically, rather than restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away from the scope situation that the utility model aim and claim protect, can also make a lot of forms, these still belong to the scope that the utility model is contained.

Claims

1. pencil sharpener, be suitable for and fined away in the end of lip pencil thing, it is characterized in that, comprise planing mechanism, isolation structure, knife rest reaches the fixed cover that articulates and be hollow structure with described knife rest, described hollow structure forms one and runs through the ring gear that one of described fixed cover is held, described knife rest offers the planing chamber of stretching into for described lip pencil thing, described planing mechanism comprises a cutter shaft and is isolated hobboing cutter and the travelling gear that is installed on the described cutter shaft, described hobboing cutter tilts to be installed on the described knife rest by described cutter shaft and stretches in the described planing chamber, described travelling gear stretches into described ring gear and is meshed with this ring gear, described isolation structure is on the described cutter shaft of being placed in of matched in clearance, and described isolation structure is between described hobboing cutter and travelling gear and hide described ring gear.

2. pencil sharpener according to claim 1, it is characterized in that, described isolation structure comprises a baffle plate and a dustproof sheet, described baffle plate is fixedly arranged on the described knife rest, described dustproof sheet is on the described cutter shaft of being placed in of matched in clearance and between described hobboing cutter and travelling gear, and described dustproof sheet splices mutually with described baffle plate and hides described ring gear.

3. pencil sharpener according to claim 2 is characterized in that, described baffle plate and described knife rest are integrated formed structure.

4. pencil sharpener according to claim 2 is characterized in that, described baffle plate offers for what described travelling gear placed and places the hole, is placed in the described hole that places of dustproof sheet sealing on the described cutter shaft.

5. pencil sharpener according to claim 1, it is characterized in that, described planing mechanism has two at least, described isolation structure comprises the dustproof sheet one to one with described planing mechanism, each described dustproof sheet is on the cutter shaft in the corresponding described planing mechanism of being placed in of matched in clearance and between the hobboing cutter and travelling gear in this planing mechanism, and all described dustproof sheets mutually splice and hide described ring gear.

6. according to claim 2 or 5 described pencil sharpeners, it is characterized in that described dustproof sheet offers the installing hole that is matched in clearance with described cutter shaft along the axis direction of described cutter shaft.

7. pencil sharpener according to claim 6 is characterized in that, described dustproof sheet is the separation groove that elasticity and an end are connected with described installing hole along radially offering of described cutter shaft.

8. according to claim 2 or 5 described pencil sharpeners, it is characterized in that, also be provided with one on the described knife rest and conflict and clamp the clamp of described dustproof sheet.

9. pencil sharpener according to claim 1 is characterized in that, described planing chamber is the taper identical with the gradient of described hobboing cutter.

10. pencil sharpener according to claim 1 is characterized in that, the articulated section of described knife rest and described fixed cover is positioned at described ring gear.