CN214492310U - Pencil sharpener - Google Patents

Abstract

The utility model relates to a pencil sharpener, which comprises a base; the top of the outer cover is open, and the lower part of the outer cover is arranged on the base; the top cover covers the open top of the outer cover, a cavity is formed between the top cover and the outer cover and between the top cover and the base in a surrounding mode, and a pencil inlet for a pencil to enter is formed in the top cover; the tool rest assembly is arranged in the accommodating cavity and comprises a pencil sharpening mechanism which is connected with a driving mechanism of the pencil sharpener so as to sharpen a pencil, and the pencil sharpening mechanism is positioned at the downstream of the pencil inlet along the pencil inlet direction; the method is characterized in that: the blade carrier assembly is connectable with the top cover to form a body member that is detachably connected to the housing. When rubbish needs to be dumped, the knife rest component and the top cover can be detached together, and at the moment, the outer cover and the base are connected together, so that pen scraps in the outer cover are dumped.

Description

Pencil sharpener

Technical Field

The utility model belongs to the technical field of stationery, concretely relates to pencil sharpener.

Background

The pencil sharpener comprises a shell, a motor and a hob, and the hob is driven to rotate by the motor to sharpen the pencil.

For example, the Chinese utility model patent ZL201920581156.1 (No. CN209888499U) discloses a pencil sharpener with adjustable pencil lead thickness, which comprises a shell and an adjusting mechanism, wherein the adjusting mechanism comprises a hob, a hob holder and a touch rod, the hole wall of the pencil sharpening hole close to the hob is provided with a pencil sharpening opening, the hob holder is also provided with an opening, the upper end of the touch rod is inserted on the hob holder and can move in the opening of the hob holder, the adjusting mechanism also comprises a supporting seat, the lower extreme of touch bar supports at the middle part of supporting seat, and the right-hand member and the brace table of supporting seat rotate to be connected, and the bottom of left end is equipped with the location lug, is equipped with butt portion on the regulating block, and butt portion has two at least fender position that are located different height position, and the location lug with correspond fender position cooperation, the bottom lateral wall of casing has the slide opening that circumference set up, stretch out outside the casing after the operation end of regulating block passes the slide opening. The casing includes last casing and the lower casing of lock each other, goes up the casing upper end and is equipped with the end cover. When pencil bits are emptyd to needs, pull down the end cover usually, pour out the bits of a writing in the casing, when still remaining a bits in the casing, generally pull down the upper cover body, the in-process of the inconvenient and whole dismantlement of bits of a writing clearance and toppling over, the bits of a writing contact the hand easily and make dirty the hand, user experience is not good.

Accordingly, there is a need for further improvements to existing sharpener designs.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the current situation of above-mentioned prior art, a convenient ware of cutting of bits clearance is provided.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a pencil sharpener comprises

A base;

the top of the outer cover is open, and the lower part of the outer cover is arranged on the base;

the top cover covers the open top of the outer cover, a cavity is formed between the top cover and the outer cover and between the top cover and the base in a surrounding mode, and a pencil inlet for a pencil to enter is formed in the top cover;

the tool rest assembly is arranged in the accommodating cavity and comprises a pencil sharpening mechanism which is connected with a driving mechanism of the pencil sharpener so as to sharpen a pencil, and the pencil sharpening mechanism is positioned at the downstream of the pencil inlet along the pencil inlet direction;

the method is characterized in that: the blade carrier assembly is connectable with the top cover to form a body member that is detachably connected to the housing.

The tool rest assembly has various structures, but preferably comprises a tool rest and a connecting frame connected with the tool rest, the top edge of the outer cover is provided with an extension plate extending along the circumferential direction, the top edge of the tool rest extends outwards to form a retaining shoulder resting on the extension plate, and the connecting frame is partially positioned between the retaining shoulder and the top cover. Therefore, the knife rest assembly adopts a detachable structure, and the installation and the maintenance of the whole knife rest assembly are convenient.

In order to realize the installation of the connecting frame, the connecting frame comprises a connecting plate, the connecting plate is positioned between the blocking shoulder and the top plate of the top cover, and the bottom surface of the connecting plate extends downwards to form a connecting column connected with the tool rest.

In order to support and protect the pencil sharpening mechanism, an accommodating space is formed between the knife rest and the connecting frame, a pencil feeding mechanism used for driving a pencil to move towards the pencil sharpening mechanism is arranged in the accommodating space, and the pencil feeding mechanism is located above the pencil sharpening mechanism.

The pen feeding mechanism has various structural forms, but preferably comprises

The fixed seat is connected with the connecting frame and is provided with an opening;

the pencil sharpener comprises two groups of rotating assemblies which are arranged at intervals, wherein each group of rotating assemblies comprises a rotating shaft which can be rotatably arranged on a fixed seat, and rotating wheels and gears which are sleeved on the rotating shaft, a gap for a pencil to pass through is reserved between the two rotating wheels, and the two rotating wheels are positioned between the two gears along the axial direction of the rotating shaft;

the actuating piece is at least partially positioned between the rotating component and the fixed seat, rotates relative to the fixed seat, is provided with a through hole at a position corresponding to the opening, and can be in driving connection with the two gears, so that the gears are driven to rotate, and then the pencil positioned in the gap is driven to move towards the through hole.

Preferably, cut a mechanism including the blade holder and can set up with rotating hob on the blade holder, the inside of blade holder has the passageway of advancing that extends from top to bottom, it has seted up the oral area on the lateral wall of passageway to advance, the hob part is located in the oral area is in order to be used for cutting the pencil that advances in the passageway, fixed ring gear has on the knife rest, install drive gear on the hob, drive gear part is located in the fixed ring gear, and with the internal tooth of fixed ring gear meshes mutually.

Preferably, the tool rest comprises an upper support and a lower support, a through hole for the pen inlet channel to penetrate out upwards is formed in the upper support, and the fixing gear ring is arranged at the bottom of the upper support and located on the periphery of the through hole.

In order to adjust the thickness of the pencil lead, the tool apron is provided with an opening below the pencil feeding channel, the tool apron is provided with a vertically arranged movable rod, the upper end of the movable rod can be positioned in the opening, and the movable rod can move up and down under the driving of the adjusting mechanism so as to adjust the thickness of the lead after the pencil is cut.

The structure of the adjusting mechanism has various forms, and from the viewpoint of reliably adjusting the thickness of the pen core, the adjusting mechanism comprises a movable part which is positioned below the movable rod; and

the dwang, basic level arranges, and can rotate around self axis, and with the moving part corresponds and arranges, matches between this dwang and the moving part and is provided with protruding muscle and slide, protruding muscle is cyclic annular and skew the central line of dwang arranges, and is located in the slide, just under the dwang pivoted state, can drive the moving part up-and-down motion drives then the movable rod up-and-down motion.

The structural style of protruding muscle has the multiple, can adopt confined annular, also can adopt the spiral ring, can also adopt other structural style, but preferably, the slide sets up on the moving part, protruding muscle sets up the dwang orientation is in on the inner terminal surface of moving part, and deviates the center of terminal surface is arranged in the dwang, set up jaggedly on the lateral wall of protruding muscle, thereby make protruding muscle has first end and second end, the first end of protruding muscle with interval between the centerline of dwang is L1, the second end of protruding muscle with interval between the centerline of dwang is L2, L1 > L2.

Compared with the prior art, the utility model has the advantages of: this sharpener's knife rest subassembly and top cap can be dismantled base and dustcoat relatively, when rubbish is emptyd to needs, can dismantle knife rest subassembly and top cap together, this moment, dustcoat and base link together, thereby empty out the inside pen dust of dustcoat, overcome in the background art and only take off the top cap and empty the pen dust and lead to the pen dust remaining unable clean problem of empting on the knife rest subassembly, in addition, even after the top cap is taken off, can take off the dustcoat from the base, but when the dustcoat is dismantled, the pen dust flows easily and makes dirty user's both hands, user experience is relatively poor.

Drawings

FIG. 1 is a schematic view of a partial structure of a pencil sharpener of this embodiment;

FIG. 2 is a sectional view of the sharpener of this embodiment;

FIG. 3 is a schematic structural view of the slider of FIG. 1;

FIG. 4 is a schematic view of the structure of FIG. 3 at another angle;

FIG. 5 is a schematic structural view of the connecting frame of FIG. 1;

FIG. 6 is a schematic structural diagram of the pen feeding mechanism in FIG. 1;

FIG. 7 is a schematic view of the actuator of FIG. 6;

FIG. 8 is a schematic perspective exploded view of FIG. 6;

FIG. 9 is a schematic perspective exploded view of the rotating assembly of FIG. 6;

FIG. 10 is a cross-sectional view of FIG. 6;

FIG. 11 is a schematic perspective exploded view of the pencil sharpener of this embodiment;

FIG. 12 is a schematic perspective exploded view of the assembly of FIG. 11 at another angle;

FIG. 13 is a cross-sectional view of an alternate angle of the sharpener of this embodiment;

FIG. 14 is a schematic structural view of an adjustment mechanism of the present embodiment;

FIG. 15 is a schematic perspective exploded view of FIG. 14;

FIG. 16 is a schematic view of the movable member;

fig. 17 is a schematic view of the rotating lever;

FIG. 18 is a schematic view of the structure of FIG. 17 at another angle;

fig. 19 is a partial structural schematic view of fig. 11.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 19, the pencil sharpener of the embodiment of the present invention comprises a tool holder assembly 2, a micro switch 31, a vertical rod 33, a first elastic member, a second elastic member, a pencil feeding mechanism 4, a driving mechanism 5, a base 6, an outer cover 7, a top cover 8 and an adjusting mechanism 9.

As shown in fig. 1, 2 and 12, the top of the cover 7 is open, and the lower portion of the cover 7 is disposed on the base 6. The top cover 8 covers the top opening of the outer cover 7, and a cavity 08 is formed between the outer cover 7 and the base 6, in this embodiment, the top cover 8 is arranged on the outer cover 7 in a substantially horizontal rotation mode, and the rotation axis of the top cover 8 is along the up-down direction. The top cover 8 is provided with a pencil inlet 81 for a pencil to enter. The blade carrier assembly 2 is connectable to the top cover 8 to form a body member 02, and the body member 02 is detachably connected to the housing 7. The tool holder assembly 2 is disposed in the cavity 08, and the tool holder assembly 2 includes a pencil sharpening mechanism 21, a tool holder 22 and a connecting frame 23, as shown in fig. 2, the connecting frame 23 is substantially horizontally disposed and connected to the tool holder 22, and a pencil feeding hole 231 for a pencil to enter is formed in the top of the connecting frame 23. Along the pen feeding direction, the pen inlet 81, the pen feeding hole 231 and the pencil sharpening mechanism 21 are arranged in sequence.

In order to realize the connection between the connection frame and the top cover and the outer cover, at least two first arc-shaped strips 75 arranged at intervals along the circumferential direction are provided on the outer circumferential wall of the outer cover 7, as shown in fig. 5, two second arc-shaped strips 235 arranged at intervals along the circumferential direction are provided on the outer circumferential edge of the connection plate 230, both the first arc-shaped strips 75 and the second arc-shaped strips 235 extend along the rotation direction of the top cover 8, and a first arc-shaped groove 82 for accommodating and limiting the first arc-shaped strips 75 therein and a second arc-shaped groove 83 for accommodating and limiting the second arc-shaped strips 235 therein are formed on the inner circumferential wall of the top cover 8, as shown in fig. 13.

In order to realize the connection of the connecting frame, as shown in fig. 2, the top edge of the outer cover 7 extends upwards and inwards to form an extending plate 71 extending along the circumferential direction, the top edge of the tool holder 22 extends outwards to form a blocking shoulder 2213 resting on the extending plate 71, the connecting frame 23 comprises a connecting plate 230, the connecting plate 230 is positioned between the blocking shoulder 2213 and the top plate of the top cover 8, and the bottom surface of the connecting plate 230 extends downwards to form a connecting column 2301 connected with the tool holder 22, which is specifically shown in fig. 2 and 5.

As shown in FIG. 2, the pencil sharpening mechanism 21 is located above the base 6 and between the connecting frame 23 and the base 6. An accommodating space 201 is formed between the tool holder 22 and the connecting frame 23, a pencil feeding mechanism 4 for driving a pencil to move towards the pencil sharpening mechanism 21 is arranged in the accommodating space 201, and the pencil feeding mechanism 4 is located above the pencil sharpening mechanism 21.

As shown in fig. 2, 13 and 19, the pencil sharpening mechanism 21 includes a holder 211 and a roller cutter 212 rotatably disposed on the holder 211, the holder 211 has a pencil feeding passage 210 for placing the head of the pencil therein, the pencil feeding passage 210 extends up and down, the holder 22 includes an upper bracket 221 and a lower bracket 222, the upper bracket 221 is provided with a through hole 2211 for the pencil feeding passage 210 to pass through, and the pencil feeding passage 210 corresponds to the pencil feeding hole 231 and is located below the pencil feeding hole 231. The lateral wall of the pencil feeding channel 210 is provided with a mouth portion 2101, and the hob 212 is gradually inclined outwards from top to bottom and is partially positioned in the mouth portion 2101, so that a pencil in the pencil feeding channel 210 can be cut. The bottom of the upper bracket 221 is provided with a substantially horizontally arranged stationary ring 2212, and the stationary ring 2212 is located at the periphery of the through hole 2211. The upper portion of the hob 212 is provided with a transmission gear 213, and the transmission gear 213 is partially positioned in the stationary ring gear 2212 and is engaged with the internal teeth of the stationary ring gear 2212. In this way, during rotation of the sharpening mechanism 21, rotation of the hob 212 is achieved due to the meshing of the transmission gear 213 on the hob 212 and the stationary ring gear 2212.

As shown in fig. 2, the pencil sharpening mechanism 21 is provided on the holder 22 and is rotatable by the driving mechanism, and the rotation axis of the pencil sharpening mechanism 21 is along the vertical direction. As shown in fig. 2 and 13, the base 6 has a hollow cavity 61 therein, the driving mechanism 5 and the microswitch 31 are both located in the cavity 61, the driving mechanism 5 includes a driver and a transmission assembly 52, the driver is a motor 51, and the motor 51 is connected with the pencil sharpening mechanism 21 through the transmission assembly 52. The motor 51 has an output shaft extending in the pen-feeding direction; the power input end of the transmission assembly 52 is connected with the output shaft of the motor 51, and the power output end of the transmission assembly 52 is connected with the pencil sharpening mechanism 21. Specifically, the transmission assembly 52 includes a driving gear 521, a first duplicate gear 522, a second duplicate gear 523, a third duplicate gear 524 and a driven gear 525, the driving gear 521 is installed on an output shaft of the motor 51, a first installation shaft, a second installation shaft and a third installation shaft which are vertically arranged are installed on the fixing frame 62, and the first installation shaft, the second installation shaft and the third installation shaft are all parallel to the output shaft of the motor. A first duplicate gear 522 is mounted on the first mounting shaft, and an upper gear of the first duplicate gear 522 is engaged with the driving gear 521, a lower gear of the first duplicate gear 522 is engaged with a lower gear of the second duplicate gear 523, and the second duplicate gear 523 is mounted on the second mounting shaft; the third duplicate gear 524 is mounted on the third mounting shaft, a lower gear of the third duplicate gear 524 is engaged with an upper gear of the second duplicate gear 523, the driven gear 525 is mounted on a fixing seat 626 on the fixing frame 62, and the pencil sharpening mechanism 21 is connected with the fixing seat 626 in a state that the cutting mechanism 21 is mounted on the base 6, so that the rotation of the pencil sharpening mechanism 21 is realized under the transmission of the motor 51 and the transmission assembly 52.

As shown in fig. 2 and 13, the microswitch 31 is disposed adjacent to the motor 51 and can be electrically connected to the motor 51. The micro switch is arranged below and adjacent to the motor 51, and wiring is convenient. The sliding part 32 is arranged on the connecting frame 23, is positioned above the microswitch 31, can transversely move inwards and outwards relative to the connecting frame 23, and is at least partially positioned in the pen inlet hole 231 along the projection of the vertical direction on the plane where the pen inlet hole 231 is positioned in the natural state; the vertical rod 33 is vertically arranged and located between the sliding part 32 and the micro switch 31, the upper end of the vertical rod 33 can be in contact with the sliding part 32, the lower end of the vertical rod 33 can be in contact with the micro switch 31, and the vertical rod 33 moves downwards under the pushing of the sliding part 32 to trigger the micro switch 31 and start the motor 51 to work under the condition that the sliding part 32 is in a transverse outwards sliding state.

In order to guide the vertical rod 33 in its upward and downward movement, the holder 22 is connected to the connecting frame 23, as shown in fig. 2, the holder 22 is located at least partially on the periphery of the sharpening unit 21, and the holder 22 has a guide channel 220 extending upward and downward for the vertical rod 33 to pass through. The first elastic element acts on the vertical rod 33, always giving the vertical rod 33 an upward movement to release the triggering of the microswitch 31, at which time the drive does not work. Specifically, the first elastic element is a first spring 35 which is sleeved on the periphery of the vertical rod 33 and is located in the guide channel 220, a boss is convexly arranged on the inner peripheral wall of the guide channel 220, a step is concavely formed on the outer peripheral wall of the vertical rod 33, the step is located on the boss, and the first spring 35 is located between the step and the boss.

In order to push the sliding member 32 laterally outwardly during the downward insertion of the pencil into the hole, as shown in fig. 2 to 5, the inner end of the sliding member 32 has a third inclined surface 322 which is gradually inclined inwardly from the top to the bottom. In order to drive the vertical rod 33 to move downwards in the process of the outward movement of the sliding member 32, the bottom of the sliding member 32 is provided with a first inclined surface 321 which gradually inclines inwards from top to bottom, and the upper end of the vertical rod 33 is provided with a second inclined surface 331 which is contacted with the first inclined surface 321 and gradually inclines inwards from top to bottom. In order to prevent the vertical rod 33 from being separated from the bottom of the sliding member 32, as shown in fig. 4, a plurality of concave regions 3211 are formed on the first inclined surface 321 in an upward concave manner, and the concave regions 3211 extend along the inclined direction of the first inclined surface 321.

In order to return the sliding element 32 to the initial position after the pencil has been sharpened, the second spring element acts on the sliding element 32 and always gives the sliding element 32 a tendency to move laterally inward. As shown in fig. 3, a groove 323 with an open outer end is partially formed on the top surface of the sliding member 32, as shown in fig. 2, a riser 232 extending downward is provided on the connecting frame 23, the riser 232 is located outside the opening, and an accommodating cavity 03 is defined between the riser 232 and the groove 323, and the second elastic member is a second spring 34 located in the accommodating cavity 03. In order to guide the lateral inward and outward movement of the slider 32, as shown in fig. 2 and 5, the connecting frame 23 has a caulking groove 231 extending along the sliding direction of the slider 32, and the slider 32 is slidably retained in the caulking groove 231.

As shown in fig. 6 to 10, the pen feeding mechanism includes a fixing base 41, two sets of rotating assemblies 42 and an actuating member 43. Specifically, as shown in fig. 5, the fixing base 41 is provided with an opening 410; as shown in fig. 6, 8 and 10, two sets of rotating assemblies 42 are oppositely arranged at intervals and are disposed on the fixed base 41. As shown in fig. 10, each set of rotating assemblies 42 includes a rotating shaft 421 rotatably disposed on the fixed base 41, and a rotating wheel 422 and a gear 423 sleeved on the rotating shaft 421, a gap 400 for passing a pencil is left between the two rotating wheels 422, and along the axial direction of the rotating shaft 421, the two rotating wheels 422 are located between the two gears 423, and the rotating directions of the two rotating wheels 422 are opposite; the actuating component 43 is at least partially located between the rotating component 42 and the fixing base 41, rotates relative to the fixing base 41, and is provided with a through opening 430 at a position corresponding to the opening 410, and can be in driving connection with the two gears 423, so as to drive the gears 423 to rotate and further drive the pencil located in the gap 400 to move toward the through opening 430, as shown in fig. 10 in particular.

As shown in fig. 8, the actuating member 43 includes a rotary disk 431 and a driving bar 432 engaged with the gear 423, the rotary disk 431 is partially located in the opening 410, the through hole 430 is opened at a position near the center of the rotary disk 431, and the driving bar 432 is disposed on the upper surface of the rotary disk 431 and located at the periphery of the through hole 430. Specifically, at least two driving bars 432 extend along the circumferential direction of the through opening 430 and are located at the periphery of the through opening 430, and an arc-shaped channel 433 is formed between two adjacent driving bars 432, as shown in fig. 7, wherein the external teeth of one gear 423 are engaged with the inner side wall of the driving bar 432, and the external teeth of the other gear 423 are engaged with the outer side wall of the driving bar 432.

In order to realize the up-and-down limiting of the turntable, as shown in fig. 7, the turntable 431 is provided with a plurality of extending members 4311 penetrating through the opening 410 of the fixing seat 41, the extending members 4311 are circumferentially arranged at intervals on the periphery of the through hole 430, a projection 4312 is convexly arranged at a free end of the extending member 4311 on a side away from the through hole 430, and the fixing seat 41 is located between the projection 4312 and the turntable 431, as shown in fig. 10.

In order to mount the rotating shaft 421, as shown in fig. 6 and 8, the fixing base 41 is provided with support legs 411 at two ends corresponding to the rotating shafts 421, the support legs 411 are provided with through holes 412 for the rotating shafts 421 to be partially located therein, and side walls of the through holes 412 are provided with through notches 4121 for the rotating shafts 421 to pass through. The rotation shaft 421 is rotatably disposed on the corresponding leg 411, and the gear 423 is located between the rotation wheel 422 and the leg 411.

As shown in fig. 6, an annular flange 4211 extending in the circumferential direction is protruded from the outer circumferential wall of the rotating shaft 421, the rotating wheel 422 is located between the corresponding annular flange 4211 and the gear 423, the outer circumferential surface of the rotating shaft 421 contacts the inner circumferential surface of the corresponding gear 423, and thus rotates with the gear 423, and both end surfaces of the rotating wheel 422 in the longitudinal direction of the rotating shaft 421 at least partially contact the gear 423 and the annular flange 4211 on the corresponding side, respectively, and thus rotates with the gear 423 and the rotating shaft 421. As shown in fig. 9, a first protrusion 4212 and a first groove 4221 which are in a plug-in fit are disposed between the first end surface of the rotary wheel 422 and the annular flange 4211 on the corresponding side, and a second protrusion 4231 and a second groove 4222 which are in a plug-in fit are disposed between the second end surface of the rotary wheel 422 and the gear 423 on the corresponding side. The first grooves 4221 are provided in plurality and circumferentially spaced on a first end surface of the rotary wheel 422, the annular flange 4211 is provided with first protrusions 4212 protruding at positions corresponding to the first grooves 4221, the second grooves 4222 are provided in plurality and circumferentially spaced on a second end surface of the rotary wheel 422, and the gear 423 is provided with second protrusions 4231 protruding at positions corresponding to the second grooves 4222. Thus, in the process of rotation of the rotary plate 431, the driving bar 432 on the rotary plate 431 drives the gear 423 to rotate, the friction force between the gear 423 and the rotary shaft 421 drives the rotary shaft 421 to rotate, and in the process of rotation of the rotary shaft 421, the rotary wheel 422 is driven to rotate due to the insertion fit of the first protrusion 4212 and the first groove 4221 and the insertion fit of the second protrusion 4231 and the second groove 4222, so that due to the rotation delay of the rotary wheel 422, after the pencil sharpening is completed, the pencil is prevented from continuously moving downwards to cause the breakage of the pencil lead.

As shown in fig. 13, the tool apron 211 has an opening 2411 below the pencil feeding channel 210, a vertically arranged movable rod 214 is arranged on the tool apron 211, the upper end of the movable rod 214 can be positioned in the opening 2411, and the movable rod can move up and down under the driving of the adjusting mechanism 9 so as to adjust the thickness of the pencil lead after the pencil is cut. As shown in fig. 13, the adjusting mechanism 9 includes a movable member 91 and a rotating lever 92, wherein the movable member 91 is located below the movable lever 214; the rotating rod 92 is arranged basically horizontally and can rotate around the axis of the rotating rod, the rotating rod corresponds to the movable piece 91 and is located on the outer side of the movable piece 91, the knob 93 is installed at the outer end of the rotating rod 92, the knob 93 is located on the outer wall surface of the base 6, and therefore the rotating rod 92 is driven to rotate in the rotating process of the knob 93. A rib 921 and a slide way 910 are arranged between the inner end surface of the rotating rod 92 and the movable element 91 in a matching manner. The rib 921 is formed in a ring shape and is disposed to be offset from the center line of the rotating lever 92, and is partially located in the slide 910. The sliding track 910 is disposed on the movable element 91, and specifically, as shown in fig. 16, a first protrusion 911 and a second protrusion 912 are disposed on the movable element 91, the first protrusion 911 is located above the second protrusion 912, and the sliding track 910 is formed between the first protrusion 911 and the second protrusion 912. As shown in fig. 17 and 18, the rib 921 is disposed on the inner end surface of the rotating lever 92 facing the moving member 91, and a notch 9211 is formed in a side wall of the rib 921, so that the rib 921 has a first end and a second end, a distance between an inner edge of the rib 921 and a center line of the rotating lever 92 is L1, a distance between an inner edge of the second end of the rib 921 and the center line of the rotating lever 92 is L2, and L1 > L2. In the state that the rotating rod 92 rotates, because the rib 921 is always located partially in the sliding channel 910, the movable member 91 can be driven to move only up and down, and then the movable rod 214 can be driven to move only up and down.

In order to guide the up-and-down movement of the movable member, as shown in fig. 13, a fixed frame 62 is disposed in the cavity 61, a sliding slot 621 extending up and down is formed on the fixed frame 62, and the movable member 91 is slidably limited on the sliding slot 621 up and down. The movable rod 214 includes an upper rod portion 2141 and a lower rod portion 2142 sequentially arranged from top to bottom, the fixing frame 62 is provided with a mounting hole for the lower rod portion 2142 to partially penetrate therethrough, and a lower end portion of the lower rod portion 2142 is always located between the fixing frame 62 and the movable member 91. In order to accurately adjust the rotation angle of the rotation rod 92, a support 63 is disposed in the cavity 61, the support 63 is disposed on the fixing frame 62, the rotation rod 92 is disposed on the support 63, and the rotation rod 92 is mounted with a fixed gear 922, as shown in fig. 2 to 4, the fixed gear 922 rotates with the rotation rod 92, the support 63 is provided with an upwardly arched elastic strip 631, and the elastic strip 631 is provided with a tooth portion 6311 engaged with the fixed gear 922.

The working process of the adjusting mechanism is as follows:

the knob 93 is rotated, the rotating rod 92 rotates along with the knob 93, all the positions of the convex ribs 921 slide in the slide ways 910 all the time, and the convex ribs 921 are eccentrically arranged, so that the slide ways 910 are driven to move upwards or downwards in the rotating process of the convex ribs 921, the movable rod 214 and the pen blocking block 25 are pushed to move upwards and downwards, and the thickness of the pen core is adjusted.

Directional terms such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the present invention, but these terms are used herein for convenience of description only and are determined based on example orientations shown in the drawings. Because the disclosed embodiments may be arranged in different orientations, these directional terms are for illustrative purposes only and should not be construed as limiting, and for example, "upper" and "lower" are not necessarily limited to orientations opposite or consistent with the direction of gravity.

Claims (10)

1. A pencil sharpener comprises

A base (6);

the top of the outer cover (7) is open, and the lower part of the outer cover is arranged on the base (6);

the top cover (8) covers the top opening of the outer cover (7), a containing cavity (08) is formed by enclosing the top cover (8) with the outer cover (7) and the base (6), and a pencil inlet (81) for a pencil to enter is formed in the top cover (8);

the tool rest assembly (2) is arranged in the accommodating cavity (08), and comprises a pencil sharpening mechanism (21) which is used for being connected with a driving mechanism (5) of a pencil sharpener so as to sharpen a pencil, and the pencil sharpening mechanism (21) is positioned at the downstream of the pencil inlet (81) along the pencil feeding direction;

the method is characterized in that: the tool rest assembly (2) can be connected with the top cover (8) to form a main body piece (02), and the main body piece (02) can be detachably connected to the outer cover (7).

2. The sharpener of claim 1 wherein: the tool rest assembly (2) comprises a tool rest (22) and a connecting frame (23) connected with the tool rest (22), an extending plate (71) extending along the circumferential direction is formed on the top edge of the outer cover (7), a blocking shoulder (2213) resting on the extending plate (71) is formed by outwards extending the top edge of the tool rest (22), and the connecting frame (23) is partially positioned between the blocking shoulder (2213) and the top cover (8).

3. The sharpener of claim 2, wherein: the connecting frame (23) comprises a connecting plate (230), the connecting plate (230) is located between the blocking shoulder (2213) and the top plate of the top cover (8), and a connecting column (2301) connected with the tool rest (22) extends downwards from the bottom surface of the connecting plate (230).

4. The sharpener of claim 2, wherein: an accommodating space (201) is formed between the tool rest (22) and the connecting frame (23), a pencil feeding mechanism (4) used for driving a pencil to move towards the direction of the pencil sharpening mechanism (21) is arranged in the accommodating space (201), and the pencil feeding mechanism (4) is located above the pencil sharpening mechanism (21).

5. The sharpener of claim 4, wherein: the pen feeding mechanism (4) comprises

The fixed seat (41) is connected with the connecting frame (23), and an opening (2411) is formed in the fixed seat (41);

the pencil sharpener comprises two groups of rotating assemblies (42) which are arranged at intervals, wherein each group of rotating assemblies (42) comprises a rotating shaft (421) which can be rotatably arranged on the fixed seat (41), and rotating wheels (422) and gears (423) which are sleeved on the rotating shaft (421), a gap (400) for a pencil to pass through is reserved between the two rotating wheels (422), and the two rotating wheels (422) are positioned between the two gears (423) along the axial direction of the rotating shaft (421);

the actuating piece (43) is at least partially positioned between the rotating component (42) and the fixed seat (41), rotates relative to the fixed seat (41), is provided with a through hole (430) at a position corresponding to the opening (2411), and can be in driving connection with the two gears (423) so as to drive the gears (423) to rotate and further drive the pencil positioned in the gap (400) to move towards the through hole (430).

6. The sharpener of any one of claims 2-5 wherein: cut a mechanism (21) and set up including blade holder (211) and ability rotatoryly hobbing cutter (212) on blade holder (211), the inside of blade holder (211) has a passageway (210) of advancing that extends from top to bottom, mouth part (2101) have been seted up on advancing the lateral wall of passageway (210), hobbing cutter (212) part is located in mouth part (2101) is in order to be used for cutting the pencil that advances in passageway (210), fixed ring gear (2212) have on knife rest (22), install drive gear (213) on hobbing cutter (212), drive gear (213) part is located in fixed ring gear (2212), and with the internal tooth of fixed ring gear (2212) meshes mutually.

7. The sharpener of claim 6, wherein: the tool rest (22) comprises an upper support (221) and a lower support (222), a through hole (2211) for the pen feeding channel (210) to penetrate upwards is formed in the upper support (221), and the fixing gear ring (2212) is arranged at the bottom of the upper support (221) and located on the periphery of the through hole (2211).

8. The sharpener of claim 6, wherein: the pencil sharpener is characterized in that an opening (2411) is formed in the lower portion of the pencil feeding channel (210) of the pencil sharpener (211), a vertically arranged movable rod (214) is arranged on the pencil sharpener (211), the upper end of the movable rod (214) can be located in the opening (2411), and the movable rod can move up and down under the driving of the adjusting mechanism (9) so as to adjust the thickness of a pencil lead after pencil sharpening.

9. The sharpener of claim 8 wherein: the adjusting mechanism (9) comprises

A movable member (91) located below the movable lever (214); and

dwang (92), basic level arranges, and can rotate around self axis, and with moving part (91) corresponds and arranges, matches between this dwang (92) and moving part (91) and is provided with protruding muscle (921) and slide (910), protruding muscle (921) are cyclic annular and skew the central line of dwang (92) arranges, and is located in slide (910), and under dwang (92) pivoted state, can drive moving part (91) up-and-down motion drives then movable rod (214) up-and-down motion.

10. The sharpener of claim 9 wherein: slide (910) set up on moving part (91), protruding muscle (921) sets up dwang (92) orientation on the inner terminal surface of moving part (91), and skew the center of dwang (92) inner terminal surface arranges, breach (9211) have been seted up on the lateral wall of protruding muscle (921), thereby make protruding muscle (921) have first end and second end, the first end of protruding muscle (921) with interval between the center line of dwang (92) is L1, the second end of protruding muscle (921) with interval between the center line of dwang (92) is L2, L1 > L2.

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