CN106079988B

CN106079988B - Pencil sharpener for drawing pencil

Info

Publication number: CN106079988B
Application number: CN201610644167.0A
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: 2016-08-05
Publication date: 2018-02-06
Anticipated expiration: 2036-08-05
Also published as: CN106079988A; CN206124573U

Abstract

A kind of pencil sharpener for drawing pencil, it includes the knife rest (2) being rotatably connected in housing (1) and the seat of honour (3) being connected in housing (1), the seat of honour (3) is located above knife rest (2), the upper end of the knife rest (2) is provided with cutter drives gear (4), and the side of knife rest (2) is rotatably connected to cutter (5), cutter (5) is connected with cutter drives gear (4), knife rest (2) cuts a hole (21) provided with taper, the inwall for cutting the nearly cutter (5) in a hole (21) is provided with and cuts pen mouth (22), angle between the axis of the cutter (5) and the axis for cutting a hole (21) is 2 °~8 °, the length of the cutter (5) is 35~45mm, the cutter (5) is hobboing cutter；Compared with prior art, the present invention has smaller advantage of lower cost, vibrations, machinable drawing pencil, cutting stability preferably and cuts into the characteristics of power is higher.

Description

Pencil sharpener for drawing pencil

Technical field

The invention belongs to pencil sharpener technical field, more particularly to a kind of pencil sharpener for drawing pencil.

Background technology

At present, pencil used during sketch is referred to as drawing pencil, and due to the characteristic of sketch, the pen core needs of drawing pencil are exposed 1.5cm or so, and drawing pencil is substantially required to user's hand and cuts pen manually by cutter, also has part to cut pen for drawing pencil Device, such as the Y of Publication No. CN 201380697, a kind of entitled multi-purpose pencil sharpener disclose " including casing (1), it is characterised in that The side of casing (1) is provided with common pencil sharpener (2)；Sketch pencil sharpener is provided with the casing (1) of common pencil sharpener (2) side (6), sketch pencil sharpener (6) is driven by motor (7), has section (5) before the blade (4) of sketch pencil sharpener (6).”；It is open Number it is CN202826902 U, entitled sketch pencil special penknife discloses that " including pencil-knife body (1), its feature exist In：Taper type is provided with the middle part of the pencil-knife body (1) and cuts a chamber (3), the side of pencil-knife body (1) offers pencil Insert port (2), pencil insert port (2) are cut a chamber (3) with taper type and are connected, and the end that taper type cuts a chamber (3) is provided with and passed through Wear the nib punched out (6) of pencil-knife body (1) another side, the diameter of nib punched out (6) and the diameter phase of pencil-lead Together, taper type cuts the outer wall of a chamber (3) and is provided with opening in the axial direction, and blade (4) is provided with opening.", above-mentioned two is public Open be blade type pencil sharpener, the first pencil sharpener be it is electronic cutting drawing pencil processed due to vibrate it is larger, pen core easily cut it is disconnected, Success rate is than relatively low, and second of pencil sharpener is manual, and during the system of cutting, the strength of hand to be controlled relatively more uniform Otherwise after there is deviation one end, pen core also easily cut it is disconnected, equally exist success rate than it is relatively low the problem of, this is also why not have on the market There is the reason for both pencil sharpeners are on sale；Also there is hob type, such as the U of Publication No. CN 204432183, entitled one kind is adjustable The pencil sharpener hobboing cutter knife core of section and its pencil sharpener of application disclose " the hobboing cutter knife core (13) include knife rest (132) and it is big, Small two hobboing cutters；The knife rest (132) is provided with the back taper planing chamber (131) of insertion pencil, and the large and small hobboing cutter coaxially inclines Planing chamber (131) side is tiltedly set, wherein the big hobboing cutter (136) is rotatably provided in knife by big hobboing cutter fixing axle (137) On frame (132), the small hobboing cutter (135) is connected by small hobboing cutter shifting axle (138) with big hobboing cutter (136), and the small hobboing cutter moves Moving axis (138) one end is square shaft, is inserted into the square hole being coaxially disposed with big hobboing cutter (136) and can the axially shifting of relatively large hobboing cutter Dynamic, small hobboing cutter shifting axle (138) other end can be slid through knife rest and is connected with planetary gear (134), the planet tooth Wheel (134) engages with the sun gear ring (23) of pencil sharpener, and the bottom of the knife rest (132) is provided with drive shaft (133), the driving Axle (133) is coaxially disposed with planing chamber (131).A kind of pencil sharpener using hobboing cutter knife core described in claim 2, its feature exist In：The hobboing cutter knife core (13) is arranged in the housing of pencil sharpener by hobboing cutter fixed cover (12), the sun gear ring of pencil sharpener (23) be circumferentially located in the gear ring regulating tank (24) set in housing, can axial slip, is provided with an adjustment portion in the housing Part (3) is connected with sun gear ring (23)；The regulating member includes adjustable plate (31), adjustment axis (32) and left regulation wheel (33), institute State adjustable plate (31) one end to be connected with sun gear ring (23), the other end and adjustment axis (32) vertical connection, the adjustment axis (32) Coaxially it is inserted into the inner chamber of left regulation wheel (33), regulation cam (321) and left regulation wheel (33) is provided with the adjustment axis (32) The regulation of inwall raised (331) contact, the left regulation wheel (33) is rotatably provided in housing and side is exposed to housing Outside.", the pencil sharpener is realized by two hobboing cutters of size, although the nib different by adjusting the small hobboing cutter system of can cutting, But the problem of the problem of due to bias and sun gear ring need to slide, causes the vibration of knife rest and hobboing cutter when cutting processed larger, element Pen it is different with the pencil of common written, it is necessary to exposed longer pen core, therefore there are still the problem of easily disconnected core, and cutting The situation of disconnected core is caused to occur because situation about interfering easily occur in two hobboing cutters of difference of size when processed.Therefore prior art Pencil sharpener, which is deposited, cuts the problem of drawing pencil success rate processed is relatively low.

The content of the invention

The present invention cuts the higher pencil sharpener for drawing pencil of drawing pencil success rate processed for problem above offer is a kind of.

The present invention solve problem above used in technical scheme be：There is provided and a kind of be used for pencil sharpener knife with following structure The transmission mechanism of tool, it includes the knife rest being rotatably connected in housing and the seat of honour being connected in housing, and the seat of honour is located at knife Above frame, the upper end of the knife rest is provided with cutter drives gear, and the side of knife rest is rotatably connected to cutter, and cutter drives with cutter Moving gear is connected, and knife rest is provided with taper and cuts a hole, and the inwall for cutting the nearly cutter in a hole is provided with and cuts pen mouth, the cutter Angle between axis and the axis for cutting a hole is 2 °~8 °, and the length of the cutter is 35~45mm, and the cutter is hobboing cutter.

After above structure, compared with prior art, the present invention due to cutter axis and cut a hole axis between Angle be 2 °~8 °, then cartridge exposing 1.5cm or so length is may be such that after cutting, while in the length range of this cutter Interior, the stability of cutter is preferable, and the bias of knife rest is also minimum, the vibration of knife rest and cutter when cutting processed so as to reduce so that Working angles are less prone to the situation of disconnected core, and on the premise of cutting effect is ensured, overall parts are relatively fewer, cutter Preparation cost be relatively low.Therefore the present invention has smaller advantage of lower cost, vibrations, machinable drawing pencil, cutting stable Property preferably and cut into the characteristics of power is higher.

As an improvement, the cutter and cutter drives gear are coaxial, the opposite side of the knife rest is provided with balancing weight；Then so After setting, not only parts are less, and the stability of operation is preferable, also make it that the compactedness of knife rest is preferable, can reduce knife rest entirety Shared volume, so as to improve the utilization rate in space in housing, and then reduce the volume of the present invention；Furthermore set on knife rest Balancing weight so that knife rest rotation when center of gravity be located on the axis of knife rest, rotating so as to significantly reduce knife rest During, the situation for avoiding the vibrations for making cutter and knife rest because of the effect of bias larger occurs, and makes nib integrality after cutting Also preferably, cutting success rate is higher, and the electric pencil-sharpening unit that noise during operation is also less than prior art (or cuts pen manually Device).

As further improving, the lower end at the seat of honour is provided with metal gear ring, the metal gear ring and cutter drives tooth Wheel engagement；Described angle is 3 °~6.5 °；Then because there is provided balancing weight so that eccentric force during blade holder turns is driven to cutter The effect of moving gear is smaller so that when driving cutter drives gear using metal gear ring, the vibrations of cutter and knife rest are smaller, cutting Nib integrality is also preferable afterwards, and cutting success rate is higher, and noise during operation will also be significantly less than the electronic of prior art and cut pen Device, and because metal gear ring possesses wear-resisting characteristic so that service life of the invention can significantly extend；Furthermore metal gear ring Can direct punch forming, prepare cost it is relatively low.

As further improving, the opposite side of the knife rest is provided with storage tank, and the balancing weight is located in storage tank, institute State storage tank inwall and be provided with the projection being oriented to, the balancing weight is provided with the open slot being oriented to male cooperation, described accommodating Groove inwall is provided with the paired spacing preiection spacing to balancing weight；After then so setting so that balancing weight, which loads, to be had necessarily Directionality, the uniformity that this allows for balancing weight assembling is higher, so as to ensure the center of gravity of assembling back tool rest on the axis of rotation, So as to improve yield rate produced by the invention, and then reduce production cost.

As further improving, the opening position that the opposite side of the knife rest is cut below a hole is provided with opening, the opening Length be 8~20mm；After then opening is set in the past so that the pen core of fracture can not only sidewinder to drop in the gap of knife, pen Core can also drop from opening, and can also be dropped even if relatively thick pen core from knife rest, original thicker so as to prevent The pen core situation that can not drop in the gap of hobboing cutter and lead to not normally cut pen occur, further improve the use of the present invention Reliability；Due to the particularity of drawing pencil, such Opening length scope, it can be ensured that once there is the situation of disconnected core, disconnected core can Discharged in the very first time from opening, it is ensured that the follow-up reliability and stability for cutting pen.

As further improving, a resistance block is slidably connected in the opening, is all provided with the inwall of the opening both sides There is guide rail, the both sides of a resistance block are provided with the guide groove coordinated with guide rail；The diameter parallel of the guide rail and cutter；It is described to open The limited block of a resistance block is plugged with mouthful, the length of the opening both sides inwall upper rail is different, and the lower end of guide rail and opening Spacing is left between lower wall, between the length for hindering a block is minimum less than or equal between the lower end of guide rail and opening lower wall Be located at the lower section of guide rail away from, the limited block, and limited block be provided with the one-to-one guide protrusions of guide rail, guide protrusions with Guide groove is slidably matched, and the upper surface of the guide protrusions is bonded with the lower surface of respective corresponding rails；After then resistance block is set, So that knife rest can use on the pencil sharpener with regulation pen core thickness and length, and then cause the use more human nature of the present invention Change；And after guide rail is set so that resistance block slides more stability, and directionality is also more preferable, and a resistance block is less susceptible to and other zero There is situation about interfering in part, and further improves the stability in use of the present invention；And after limited block is set, first will resistance during assembling Block is assembled on guide rail by the gap location between guide rail lower end and opening lower wall, is then pushed up a resistance block to guide rail Lower end is exposed below resistance block, the gap location that limited block finally is plugged into guide rail lower end between the lower wall that is open, this When limited block on projection corresponded with guide rail, a resistance block can slide on raised and guide rail, what assembling need not be special Instrument, therefore assembling is more convenient, can further improve the packaging efficiency of worker, so as to reduce the production cost of the present invention；And guide rail Length difference after so that when resistance block slides, a resistance block side first reaches the guide rail of side and raised joint place, and A block opposite side is now hindered also completely on guide rail or projection, so that resistance block slip is more smooth, so as to further carry The use reliability of the high present invention.

As further improving, the relative inwall of the storage tank is provided with least one pair of convex tendon, convex tendon length direction Extend from the opening of storage tank to the bottom of storage tank, and it is inclined-plane that convex tendon, which is located at the end face of storage tank opening,；Then inclined-plane Guiding is played a part of in loading to balancing weight, and convex tendon make it that the balancing weight stability after assembling is preferable so that balancing weight Be not in situation about rocking in blade holder turns, so as to further improve the stability in use of the present invention and reliability.

As further improving, the spacing preiection is barb type structure；Corresponding to the spacing preiection outside storage tank Wall is provided with reinforcement；Then barb type structure is not only advantageous to balancing weight loading, while also helps spacing to balancing weight so that The spacing firmness of balancing weight is higher so that balancing weight is more not in situation about rocking in blade holder turns, so as to further carry The stability in use and reliability of the high present invention；And after reinforcement is set, before inexpensive and preferable using effect is ensured Put, save the preparing raw material of knife rest, so as to reduce the preparation cost of knife rest.

As further improving, the lower surface at the seat of honour is provided with indent, and indent side wall is provided with step surface, described Metal gear ring upper surface is fitted on step surface, and the indent side wall below the step surface is provided with limited impression, the metal Coordinate circumferential spacing spacing block set on gear ring with limited impression；After then so setting, the structure of metal gear ring is simpler, metal Gear ring directly integrated punching can be molded, and can reduce the production cost of metal gear ring, while be also easy to assemble, and can further improve work The efficiency of assembling of people, so as to further reduce the cost of the present invention.

Improved as further, the step surface is provided with the connecting pole of at least two columns, and connecting pole is circumferentially equal Cloth, and the free end of connecting pole is located at the outside of indent, the outer peripheral face of the metal gear ring is provided with to be corresponded with connecting pole Breach；After metal gear ring is assembled to interior recess, the free end of connecting pole is extruded so that the free end deformation of connecting pole and Spacing effect is enclosed to metal-toothed；Then such metal gear ring fixed structure, it is simple in construction, it is not necessary to other screw or Rivet, on the premise of same using effect is ensured, further reduce the weight of the present invention.

Brief description of the drawings

Fig. 1 is the structural representation for the pencil sharpener that the present invention is used for drawing pencil.

Fig. 2 is the axonometric drawing that the present invention is used for after the pencil sharpener removal housing of drawing pencil.

Fig. 3 is the structural representation for the pencil sharpener knife rest that the present invention is used for drawing pencil.

Fig. 4 is the structural representation that the present invention is used for after the pencil sharpener knife rest removal balancing weight of drawing pencil.

Fig. 5 is the sectional view of the line A-A along Fig. 4.

Fig. 6 is the structural representation for the pencil sharpener metal gear ring that the present invention is used for drawing pencil.

Fig. 7 is the front view that the present invention is used for after the pencil sharpener knife rest removal cutter and balancing weight of drawing pencil.

Fig. 8 is that Fig. 7 removes the rearview after a resistance block.

Fig. 9 is the sectional view of the line B-B along Fig. 8.

Figure 10 is the enlarged drawing for the pencil sharpener resistance block that the present invention is used for drawing pencil.

Figure 11 is the enlarged drawing for the pencil sharpener limited block that the present invention is used for drawing pencil.

As shown in the figure：1st, housing, 2, knife rest, 3, the seat of honour, 4, cutter drives gear, 5, cutter, 6, metal gear ring, 7, counterweight Block, 8, storage tank, 9, raised, 10, open slot, 11, spacing preiection, 12, opening, 13, convex tendon, 14, reinforcement, 15, indent, 16th, step surface, 17, limited impression, 18, spacing block set, 19, connecting pole, 20, breach, 21, cut a hole, 22, cut pen mouth, 23, resistance Block, 24, guide rail, 25, guide groove, 26, limited block, 27, guide protrusions.

Embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is described further.

Embodiment one

As shown in Figure 1, Figure 2, it is a kind of for drawing pencil shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10 and Figure 11 Pencil sharpener, it include the knife rest 2 that is rotatably connected in housing 1 and the seat of honour 3 being connected in housing 1 (this example is electric pencil-sharpening unit, Certainly other parts are also included, but due to being not directed to the inventive point of the invention, therefore will not be repeated here), the seat of honour 3 Above knife rest 2, the upper end of the knife rest 2 is provided with cutter drives gear 4, and the side of knife rest 2 is rotatably connected to cutter 5, Cutter 5 is connected with cutter drives gear 4, and knife rest 2 cuts a hole 21 provided with taper, on the inwall for cutting the nearly cutter 5 in a hole 21 Provided with pen mouth 22 is cut, the angle between the axis of the cutter 5 and the axis for cutting a hole 21 is 2 °~8 °, and (this example is 4 °, also may be used For 2 °, 3 °, 3.5 °, 5 ° or 8 ° etc.), angle is according to setting based on the model for being actually subjected to sharpening pencil, because the type of pencil The diameter of number difference, diameter and pen core differs, therefore during actual production, choose a kind of pencil of model and come as main target Set, the length of the cutter 5 is 35~45mm (this example 40mm, or 35mm, 38mm, 42mm or 45mm etc.), knife The length of tool 5 is according to setting based on the model for being actually subjected to sharpening pencil, because the model difference of pencil, diameter and pen core is straight Footpath differs, therefore during actual production, a kind of pencil of model is chosen as main target to set, and the cutter 5 is hobboing cutter.

The cutter 5 and cutter drives gear 4 are coaxial, and the opposite side of the knife rest 2 is provided with balancing weight 7, and balancing weight 7 is set Requirement be：Balancing weight 7 sets the center of gravity of back tool rest 2 to be located on the axis of the rotation of knife rest 2.

The lower end at the seat of honour 3 is provided with metal gear ring 6, and the metal gear ring 6 engages with cutter drives gear 4.

The opposite side of the knife rest 2 is provided with storage tank 8, and the balancing weight 7 is located in storage tank 8, the inwall of storage tank 8 The projection 9 being oriented to is provided with, the balancing weight 7 is provided with coordinates the open slot 10 being oriented to, the inwall of storage tank 8 with projection 9 It is provided with the paired spacing preiection 11 spacing to balancing weight 7.

The opening position that the opposite side of the knife rest 2 cuts the lower section of a hole 21 is provided with opening 12, and the length of the opening 12 is 8~ 20mm this example is 12mm, or 8mm, 10mm, 16mm or 20mm etc.), be open 12 length according to being actually subjected to sharpening pencil Model based on set because the model of pencil is different, the diameter of diameter and pen core differs, therefore during actual production, choosing A kind of pencil of model is taken as main target to set.

A resistance block 23 is slidably connected in the opening 12, guide rail 24, institute are equipped with the inwall of 12 both sides of the opening The both sides for stating a resistance block 23 are provided with the guide groove 25 coordinated with guide rail 24；The diameter parallel of the guide rail 24 and cutter 5；It is described to open The limited block 26 of a resistance block 23 is plugged with mouth 12, the length of 12 both sides inwall upper rails 24 of the opening is different, and guide rail 24 12 lower walls of lower end and opening between leave spacing, the length of a resistance block 23 is less than or equal to lower end and the opening of guide rail 24 Minimum spacing between 12 lower walls, the limited block 26 is located at the lower section of guide rail 24, and limited block 26 is provided with and guide rail 24 1 Guide protrusions 27 corresponding to one, guide protrusions 27 are slidably matched with guide groove 25, the upper surface of the guide protrusions 27 with each The lower surface fitting of corresponding rails 24.

The relative inwall of the storage tank 8 is provided with least one pair of convex tendon 13, and (this example is two pairs, or a pair, three pairs Or four pairs etc.), the length direction of convex tendon 13 extends from the opening of storage tank 8 to the bottom of storage tank 8, and convex tendon 13 is positioned at appearance The end face for putting the opening of groove 8 is inclined-plane.

The spacing preiection 11 is barb type structure.

The outer wall of storage tank 8 corresponding to the spacing preiection 11 is provided with reinforcement 14.

The lower surface at the seat of honour 3 is provided with indent 15, and the side wall of indent 15 is provided with step surface 16, the metal gear ring 6 Upper surface is fitted on step surface 16, and the side wall of indent 15 of the lower section of step surface 16 is provided with limited impression 17, the metal Coordinate circumferential spacing spacing block set 18 on gear ring 6 with limited impression 17.

The step surface 16 be provided with least two columns connecting pole 19 (this example is four, or two, three, Five or six etc.), connecting pole 19 is evenly distributed, and the free end of connecting pole 19 is located at the outside of indent 15, the gold The outer peripheral face of category gear ring 6 is provided with breach 20 one-to-one with connecting pole 19；After metal gear ring 6 is assembled at indent 15, The free end of connecting pole 19 is extruded so that the free end of connecting pole 19 deforms and spacing effect is played to metal gear ring 6.It is real Apply example two

A kind of pencil sharpener for drawing pencil, it includes the knife rest 2 being rotatably connected in housing 1 and is connected in housing 1 The seat of honour 3 (this example is Manual pencil sharpener, also includes other parts certainly, but due to being not directed to the inventive point of the invention, Therefore will not be repeated here), the seat of honour 3 is located at the top of knife rest 2, and the upper end of the knife rest 2 is provided with cutter drives gear 4, and knife The side of frame 2 is rotatably connected to cutter 5, and cutter 5 is connected with cutter drives gear 4, and knife rest 2 cuts a hole provided with taper 21, cut the nearly cutter 5 in a hole 21 inwall be provided with cut pen mouth 22, between the axis of the cutter 5 and the axis for cutting a hole 21 Angle is 3 °~6.5 ° (this example is 4.5 °), and the opposite side of the knife rest 2 is provided with balancing weight 7, and the requirement that balancing weight 7 is set is： Balancing weight 7 sets the center of gravity of back tool rest 2 to be located on the axis of the rotation of knife rest 2.

The cutter 5 and cutter drives gear 4 are coaxial, and the length of the cutter 5 is 35~45mm (this example 38mm).

The opening position that the opposite side of the knife rest 2 cuts the lower section of a hole 21 is provided with opening 12, and the length of the opening 12 is 8~ 20mm (this example 14mm).

The relative inwall of the storage tank 8 is provided with least one pair of convex tendon 13 (a pair of this example, or two pairs, three pairs Or four pairs etc.), the length direction of convex tendon 13 extends from the opening of storage tank 8 to the bottom of storage tank 8, and convex tendon 13 is positioned at appearance The end face for putting the opening of groove 8 is inclined-plane.

The step surface 16 be provided with least two columns connecting pole 19 (this example is three, or two, four, Five or six etc.), connecting pole 19 is evenly distributed, and the free end of connecting pole 19 is located at the outside of indent 15, the gold The outer peripheral face of category gear ring 6 is provided with breach 20 one-to-one with connecting pole 19；After metal gear ring 6 is assembled at indent 15, The free end of connecting pole 19 is extruded so that the free end of connecting pole 19 deforms and spacing effect is played to metal gear ring 6.

Application method is identical with the application method of common electric pencil sharpener；The present invention can also be applied to Manual pencil sharpener On, application method is identical with the application method of common manual pencil sharpener.

Above example is only presently preferred embodiments of the present invention, and the present invention, which is not limited only to above example, also allows have other knots Structure changes, all to change in rights to independence claimed range of the present invention, belongs to the scope of the present invention.

Claims

1. a kind of pencil sharpener for drawing pencil, it includes the knife rest (2) being rotatably connected in housing (1) and is connected to housing (1) seat of honour (3) in, the seat of honour (3) are located above knife rest (2), and the upper end of the knife rest (2) is provided with cutter drives gear (4), and the side of knife rest (2) is rotatably connected to cutter (5), and cutter (5) is connected with cutter drives gear (4), knife rest (2) A hole (21) is cut provided with taper, the inwall for cutting the nearly cutter (5) in a hole (21) is provided with and cuts pen mouth (22), it is characterised in that：Institute State the axis of cutter (5) and cut a hole (21) axis between angle be 2 °~8 °, the length of the cutter (5) for 35~ 45mm, the cutter (5) are hobboing cutter；The lower end of the seat of honour (3) is provided with metal gear ring (6), the metal gear ring (6) and cutter Drive gear (4) engages；The cutter (5) and cutter drives gear (4) are coaxial.

2. the pencil sharpener according to claim 1 for drawing pencil, it is characterised in that：The opposite side of the knife rest (2) is set There is balancing weight (7).

3. the pencil sharpener according to claim 1 for drawing pencil, it is characterised in that：Described angle is 3 °~6.5 °.

4. the pencil sharpener according to claim 2 for drawing pencil, it is characterised in that：The opposite side of the knife rest (2) is set There is storage tank (8), the balancing weight (7) is located in storage tank (8), and storage tank (8) inwall is provided with the projection being oriented to (9), the balancing weight (7) is provided with coordinates the open slot (10) being oriented to raised (9), and storage tank (8) inwall is provided with The paired spacing preiection (11) spacing to balancing weight (7).

5. the pencil sharpener according to claim 4 for drawing pencil, it is characterised in that：The opposite side of the knife rest (2) is cut Opening position below hole (21) is provided with opening (12), and the length of the opening (12) is 8~20mm.

6. the pencil sharpener according to claim 5 for drawing pencil, it is characterised in that：It is slidably connected in the opening (12) There is a resistance block (23), guide rail (24) is equipped with the inwall of described opening (12) both sides, the both sides of a resistance block (23) are provided with The guide groove (25) coordinated with guide rail (24)；The guide rail (24) and the diameter parallel of cutter (5)；Described opening (12) place's grafting There is the limited block (26) of a resistance block (23), the length of opening (12) both sides inwall upper rail (24) is different, and guide rail (24) Lower end and opening (12) lower wall between leave spacing, the length of a resistance block (23) is less than or equal to the lower end of guide rail (24) The minimum spacing between opening (12) lower wall, the limited block (26) are located at the lower section of guide rail (24), and on limited block (26) Provided with the one-to-one guide protrusions (27) of guide rail (24), guide protrusions (27) are slidably matched with guide groove (25), described to lead It is bonded to the upper surface of raised (27) with the lower surface of respective corresponding rails (24).

7. the pencil sharpener according to claim 4 for drawing pencil, it is characterised in that：Relative interior of the storage tank (8) Wall is provided with least one pair of convex tendon (13), bottom of convex tendon (13) length direction from the opening of storage tank (8) to storage tank (8) Extension, and it is inclined-plane that convex tendon (13), which is located at the end face of storage tank (8) opening,.

8. the pencil sharpener according to claim 4 for drawing pencil, it is characterised in that：The spacing preiection (11) is barb Type structure；Storage tank (8) outer wall corresponding to the spacing preiection (11) is provided with reinforcement (14).

9. the pencil sharpener according to claim 1 for drawing pencil, it is characterised in that：The lower surface of the seat of honour (3) is set There is indent (15), and indent (15) side wall is provided with step surface (16), metal gear ring (6) upper surface is fitted in step surface (16) on, indent (15) side wall below the step surface (16) is provided with limited impression (17), on the metal gear ring (6) with Limited impression (17) coordinates circumferential spacing spacing block set (18).

10. the pencil sharpener according to claim 9 for drawing pencil, it is characterised in that：The step surface (16) is provided with The connecting pole (19) of at least two columns, connecting pole (19) are evenly distributed, and the free end of connecting pole (19) is located at indent (15) outside, the outer peripheral face of the metal gear ring (6) are provided with and the one-to-one breach (20) of connecting pole (19)；Work as metal After gear ring (6) is assembled to indent (15) place, the free end of connecting pole (19) is extruded so that the free end deformation of connecting pole (19) And spacing effect is played to metal gear ring (6).