CN213261775U - Pencil sharpener's pen clamping mechanism and knife rest assembly - Google Patents

Abstract

The utility model relates to a pencil sharpener technical field discloses a pencil sharpener's a clamp mechanism, including: the middle part of the mounting seat is provided with a pencil through hole for a pencil to pass through; the plurality of clamping blocks are hinged to the mounting seat, and enclose a clamping space for a pencil to pass through, and the clamping space is communicated with the pencil passing hole; the cover body is covered above the clamping block and can drive the clamping block to rotate so as to adjust the size of the clamping space; the elastic piece is connected between the cover body and the mounting seat. The utility model has the advantages that the pencil clamping mechanism and the pencil feeding mechanism can be adapted to pencils with different diameters, and the application range is wide; and the pencil is stably clamped and can smoothly enter and exit.

Description

Pencil sharpener's pen clamping mechanism and knife rest assembly

Technical Field

The utility model relates to a pencil sharpener technical field especially relates to a pencil sharpener's a mechanism and knife rest assembly that press from both sides.

Background

The top of a common electric pencil sharpener is provided with a pencil feeding mechanism, so that a pencil is automatically fed for sharpening, and the pencil is smoothly drawn out from the pencil sharpener after being sharpened. In the existing pen feeding mechanism, two gear shafts are driven by a turntable to rotate relatively; each gear shaft is provided with a pencil clamping piece, the rotation of the gear shaft drives the pencil clamping pieces to move, and a pencil is inserted between the two pencil clamping pieces; the rotary disc is in transmission connection with the tool rest of the pencil sharpener, and the general tool rest is driven by the motor, so that the forward and reverse rotation of the motor can drive the tool rest to rotate forward and reverse, the rotary disc is further rotated forward and reverse, the gear shaft is further rotated forward and reverse, and feeding and withdrawing of the pencil are achieved. The distance between the two common pencil clamping pieces is fixed, and the distance cannot be adjusted, so that the pencil sharpener can only be suitable for pencils with fixed diameters generally, and the pencil sharpening effect is poor for pencils with different diameters.

The pencil is clamped by the pencil clamping and feeding mechanism, the clamping effect cannot be effectively guaranteed sometimes, so that other clamping structures are required to be arranged to guarantee the clamping effect on the pencil, and the clamping structures are required to adapt to pencils with different diameters.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a pencil of adaptable different diameters size is provided, and the centre gripping is reliable, and the smooth and easy pen clamping mechanism and the knife rest assembly of business turn over.

The utility model provides a technical scheme that its technical problem adopted is, provides a pencil sharpener's a clamp mechanism, including:

the middle part of the mounting seat is provided with a pencil passing hole for a pencil to pass through;

the clamping blocks are hinged to the mounting seat, a clamping space for a pencil to pass through is defined by the clamping blocks, and the clamping space is communicated with the pencil passing hole;

the cover body is covered above the clamping block and can drive the clamping block to rotate so as to adjust the size of the clamping space;

and the elastic piece is connected between the cover body and the mounting seat.

Furthermore, the mounting base is provided with a first convex column in an upward protruding mode, the middle of the clamping block is provided with a mounting hole, the first convex column penetrates through the mounting hole, and the clamping block can rotate along the first convex column.

Furthermore, a plurality of the clamping blocks are distributed along the circumferential direction of the pen penetrating hole, and the clamping blocks correspond to the first convex columns one to one.

Furthermore, waist holes corresponding to the first convex columns in a one-to-one mode are formed in the cover body, and the upper ends of the first convex columns penetrate through the waist holes and protrude above the cover body.

Furthermore, one end of the elastic piece is provided with an inserting end, and the other end of the elastic piece is provided with a sleeving end; the inserting end is inserted on the cover body, and the sleeving end is sleeved on the first convex column.

Furthermore, the clamping block is provided with a second convex column which protrudes upwards, the cover body is provided with a groove corresponding to the second convex column, and the second convex column is arranged in the groove.

Furthermore, a plurality of salient points are arranged at the top of the clamping block, and a guide inclined plane is arranged at one end, close to the pen penetrating hole, of the clamping block.

Further, the device also comprises a top cover which is covered on the cover body; the middle part of the first convex column is provided with a threaded hole, and the top cover is detachably fixed in the threaded hole through a screw.

Furthermore, an installation cavity with an upward opening is formed in the top of the installation seat, and the cover body, the elastic piece and the clamping blocks are all arranged in the installation cavity; the top cover is arranged at the opening of the mounting cavity.

The utility model provides a technical scheme that its technical problem adopted is, still provides a pencil sharpener's knife rest assembly, including foretell double-layered pen mechanism, still include:

the pen feeding mechanism is arranged on the mounting seat; the pen feeding mechanism comprises a first clamping assembly, a second clamping assembly, a rotary disc, a transmission assembly and a spring; the first clamping assembly and the second clamping assembly are arranged at intervals, the distance between the first clamping assembly and the second clamping assembly is adjustable, and the spring is connected between the first clamping assembly and the second clamping assembly; the turntable can drive the first clamping assembly and the second clamping assembly to rotate through the transmission assembly;

the hob cutter comprises a cutter frame and a hob cutter arranged on the cutter frame; the tool rest is connected below the rotary disc.

Compared with the prior art, the utility model discloses following beneficial effect has at least:

in the utility model, three clamping blocks are respectively hinged on the mounting seat, and the three clamping blocks enclose a clamping space for clamping a pencil; the cover body can drive the three clamping blocks to rotate so as to adjust the size of the clamping space, so that the clamping space can be adapted to pencils with different diameters, and the elastic piece is tensioned between the cover body and the mounting seat, so that the three clamping blocks can stably clamp the pencils, and the pencil looseness condition is avoided; one side that is close to the centre gripping space at the grip block has set up the direction inclined plane, when the pencil leads into the pencil sharpener, can the limited retardation that reduces the pencil and insert feel, experience feels good, and the pencil drives the grip block, and then makes the lid rotate, and the elastic component deformation presss from both sides the pencil tightly, and it is high to advance a stability.

In the utility model, the first clamping component and the second clamping component are arranged on the mounting seat, and the distance between the first clamping component and the second clamping component can be adjusted and is tensioned by the spring to adapt to the pencils with different diameters, namely, when the diameter of the pencil is larger, the distance between the first clamping component and the second clamping component is increased, and the spring is lengthened; when the diameter of the pencil is smaller, the distance between the first clamping assembly and the second clamping assembly is reduced under the action of the spring; the spring can ensure that the two clamping wheels clamp the pencil tightly, and the pencil is not easy to deflect when entering and exiting the pencil feeding mechanism. The first clamping assembly and the second clamping assembly are driven to rotate around opposite directions through the rotary table, so that the pencil is smoothly fed into the pencil feeding mechanism or pulled out of the pencil feeding mechanism, and the pencil is smoothly fed in and discharged.

Drawings

FIG. 1 is a schematic structural view of the pen clamping mechanism of the present invention after the top cover is removed;

FIG. 2 is a schematic view of the assembly of the clamping block and the mounting base;

FIG. 3 is an exploded view of the pen clamping mechanism;

FIG. 4 is a schematic view of a pencil disposed in the carriage assembly;

FIG. 5 is an exploded view of the carriage assembly;

fig. 6 is a schematic structural diagram of the pen feeding mechanism.

In the figure, the position of the upper end of the main shaft,

1. a mounting seat; 10. a pen hole is penetrated; 11. a first convex column; 110. a threaded hole; 12. a mounting cavity;

2. a clamping block; 20. a clamping space; 21. mounting holes; 22. a convex column; 23. salient points; 24. a guide slope;

3. a cover body; 30. a waist hole; 31. a groove;

4. an elastic member; 40. a plug end; 41. a sleeving end;

5. a top cover;

6. a pen feeding mechanism; 60. a first clamping assembly; 61. a second clamping assembly; 62. a turntable; 63. a transmission assembly; 64. a spring; 65. mounting a plate; 601. a clamping wheel;

7. a tool holder;

8. and (4) hobbing cutters.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-3, a pencil clamping mechanism of a pencil sharpener comprises: the pencil lead-in device comprises a mounting seat 1, wherein a pencil lead-in hole 10 for a pencil to pass through is formed in the middle of the mounting seat 1 and is a round hole; the plurality of clamping blocks 2 are hinged to the mounting base 1, the number of the clamping blocks 2 is preferably, but not limited to, three, and the plurality of clamping blocks 2 define a clamping space 20 for a pencil to pass through, the clamping space 20 refers to a position defined by the three clamping blocks 2 for the pencil to pass through, when the pencil passes through the clamping space 20, the plurality of clamping blocks 20 clamp, and the clamping space 20 is communicated with the pencil passing hole 10, that is, the clamping space 20 is located above the pencil passing hole 10; the cover body 3 is covered above the clamping block 2, and the cover body 3 can drive the clamping block 2 to rotate so as to adjust the size of the clamping space 20; and an elastic member 4 connected between the cover 3 and the mounting base 1.

In the using process, the three clamping blocks 2 are respectively hinged on the mounting seat 1, and the three clamping blocks 2 enclose a clamping space 20 for clamping a pencil; and the lid 3 can drive three grip blocks 2 and rotate to adjust the size of centre gripping space 20, and then make this centre gripping space 20 can the different pencil diameters of adaptation, and through the tensioning of elastic component 4 between lid 3 and mount pad 1, guarantee that three grip blocks 2 are stable with the pencil centre gripping, in order to avoid appearing the not hard up condition of pencil.

Specifically, the mounting base 1 protrudes upwards to form a first convex column 11, the middle of the clamping block 2 is provided with a mounting hole 21, the first convex column 11 penetrates through the mounting hole 21, the clamping block 2 can rotate along the first convex column 11, and the convex column 11 is integrally formed on the mounting base 1; and it is a plurality of grip block 2 is along wear the circumference distribution of a hole 10, grip block 2 can stretch to in wearing a hole 10, just grip block 2 with first projection 11 one-to-one, each grip block 2 articulates on mount pad 1 through a first projection 11 promptly, before the pencil passed through a hole 10, the pencil was held to a plurality of grip blocks of accessible 2, guaranteed that the pencil sent into reliably. The cover body 3 is provided with waist holes 30 corresponding to the first convex columns 11 one by one, the upper ends of the first convex columns 11 penetrate through the waist holes 30 and protrude above the cover body 3, so that the elastic pieces 4 can be conveniently installed, and the top cover 5 can be connected and supported. One end of the elastic element 4 is provided with an inserting end 40, and the other end of the elastic element 4 is provided with a sleeving end 41; the inserting end 40 is inserted into the cap body 3, the sleeve connecting end 41 is sleeved on one of the first protruding columns 11, when a pencil is inserted, the clamping block 2 is driven to be opened, the clamping block 2 drives the cap body 3 to rotate, the elastic piece 4 is deformed, the pencil is clamped by force generated by deformation, and the pencil is guaranteed to be stably fed.

The clamping block 2 is provided with a second convex column 22 in an upward protruding manner, the cover body 3 is provided with a groove 31 corresponding to the second convex column 22, and the second convex column 22 is arranged in the groove 31, so that the cover body 3 can be driven to rotate when the clamping block 2 rotates; conversely, the cover body 3 can drive the clamping block 2 to rotate around the first convex column 11; the groove 31 is formed along the circumferential edge of the cover 3 and has an open shape so that the second protrusion 22 is inserted into the groove 31 when assembled.

Preferably, a plurality of salient points 23 are arranged at the top of the clamping block 2, and the salient points 23 can prevent the clamping block 2 from being pressed by the cover body 3, reduce the contact area between the clamping block 2 and the cover body 3, and reduce the friction force generated when the cover body 3 and the clamping block 2 generate relative motion; grip block 2 is close to the one end of wearing a hole 10 is equipped with direction inclined plane 24, when the pencil got into the pencil sharpener, can the limited pencil male retardation of reducing feel, experiences and feels, and pencil drive grip block 2, and then make lid 3 rotate, and elastic component 4 deformation presss from both sides the pencil tightly, and it is high to advance a stability.

The pen clamping mechanism also comprises a top cover 4 which is covered above the cover body 3, and the top cover 4 can effectively prevent external pollutants from entering the pen clamping mechanism; a threaded hole 110 is formed in the middle of the first convex column 11, and the top cover 4 is detachably fixed in the threaded hole 110 through a screw. The top of the mounting base 1 is provided with a mounting cavity 12 with an upward opening, and the cover body 3, the elastic part 4 and the clamping blocks 2 are all arranged in the mounting cavity 12, so that the whole structure is compact; the top cover 5 is positioned at the opening of the installation cavity 12 and shields parts inside the installation cavity 12.

As shown in fig. 4-6, the knife holder assembly of the pencil sharpener of the present invention, including the above-mentioned pencil clamping mechanism, further includes: the pen feeding mechanism 6 is arranged on the mounting base 1; the pen feeding mechanism 6 comprises a first clamping assembly 60, a second clamping assembly 61, a turntable 62, a transmission assembly 63, a spring 64 and two mounting plates 65 which are arranged in parallel; the first clamping assembly 60 and the second clamping assembly 61 are arranged at intervals, and the distance between the first clamping assembly 60 and the second clamping assembly 61 is adjustable, namely, two kidney-shaped grooves are formed in the two mounting plates 65 respectively, and four kidney-shaped grooves are formed in all, two ends of the first clamping assembly 60 and two ends of the second clamping assembly 61 are slidably arranged in the two kidney-shaped grooves respectively, so that the distance between the first clamping assembly 60 and the second clamping assembly 61 can be adjusted, and the first clamping assembly 60 and the second clamping assembly 61 can be adapted to pencils with different diameters. And the spring 64 is connected between the first clamping assembly 60 and the second clamping assembly 61 to tension both the first clamping assembly 60 and the second clamping assembly 61; the turntable 62 can drive the first clamping assembly 60 and the second clamping assembly 61 to rotate through the transmission assembly 63, so as to feed a pencil in or feed the pencil out; a cutter frame 7 and a hob 8 arranged on the cutter frame 7; the tool post 7 is attached below the turntable 62. The first clamping assembly 60 and the second clamping assembly 61 are similar in structure, and both comprise a clamping wheel 601, and the two clamping wheels 601 are used for clamping a pencil.

In the use process, the first clamping assembly 60 and the second clamping assembly 61 are arranged on the mounting seat 1, the distance between the first clamping assembly 60 and the second clamping assembly 61 can be adjusted, and the first clamping assembly 60 and the second clamping assembly 61 are tightened by the spring 64 to adapt to pencils with different diameters, namely, when the diameter of the pencil is larger, the distance between the first clamping assembly 60 and the second clamping assembly 61 is larger, and the spring 64 is lengthened; when the diameter of the pencil is small, the distance between the first clamping assembly 60 and the second clamping assembly 61 is reduced under the action of the spring 64; the spring 64 can ensure that the two clamping wheels 601 clamp the pencil, and the pencil is not easy to deflect when entering and exiting the pencil feeding mechanism. The first clamping assembly 60 and the second clamping assembly 61 are driven by the turntable 62 to rotate around opposite directions, so that the pencil is smoothly fed into the pencil feeding mechanism 6 or is smoothly drawn out from the pencil feeding mechanism 6, and the pencil is smoothly fed in and discharged.

In the scheme, the pencil clamping mechanism and the pencil feeding mechanism can be suitable for pencils with different diameters, the pencils with different diameters can be adapted by changing the size of the clamping space 20 and the distance between the first clamping assembly 60 and the second clamping assembly 61, the application range is wide, and the clamping is reliable; and the pencil feeding mechanism is smooth when the pencil enters and exits the pencil sharpener, and has no clamping stagnation and pause feeling.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (10)

1. A pencil clamping mechanism of a pencil sharpener is characterized by comprising:

the middle part of the mounting seat is provided with a pencil passing hole for a pencil to pass through;

the clamping blocks are hinged to the mounting seat, a clamping space for a pencil to pass through is defined by the clamping blocks, and the clamping space is communicated with the pencil passing hole;

the cover body is covered above the clamping block and can drive the clamping block to rotate so as to adjust the size of the clamping space;

and the elastic piece is connected between the cover body and the mounting seat.

2. The clamping mechanism of claim 1, wherein the mounting base has a first protruding pillar protruding upward, the clamping block has a mounting hole formed at a middle portion thereof, the first protruding pillar is inserted into the mounting hole, and the clamping block is rotatable along the first protruding pillar.

3. The pencil clamping mechanism of claim 2, wherein a plurality of said clamping blocks are distributed along a circumference of said pencil passing hole, and said clamping blocks are in one-to-one correspondence with said first studs.

4. The pencil clamping mechanism of claim 2, wherein said cap has a waist hole corresponding to said first protrusion, and an upper end of said first protrusion passes through said waist hole and protrudes above said cap.

5. The pencil clamping mechanism of claim 4 wherein said resilient member has a mating end at one end and a nesting end at the other end; the inserting end is inserted on the cover body, and the sleeving end is sleeved on the first convex column.

6. The pencil clamping mechanism of claim 1, wherein said clamping block has a second protrusion protruding upward, said cover has a recess corresponding to said second protrusion, and said second protrusion is disposed in said recess.

7. The pencil clamping mechanism of claim 1, wherein a plurality of protrusions are formed on the top of the clamping block, and a guiding bevel is formed on the end of the clamping block close to the pencil passing hole.

8. The pencil clamping mechanism of claim 2 further comprising a cap covering said cap body; the middle part of the first convex column is provided with a threaded hole, and the top cover is detachably fixed in the threaded hole through a screw.

9. The clamping mechanism of the pencil sharpener of claim 8, wherein the top of the mounting seat is provided with a mounting cavity with an upward opening, and the cover, the elastic member and the plurality of clamping blocks are all disposed in the mounting cavity; the top cover is arranged at the opening of the mounting cavity.

10. A carriage assembly for a pencil sharpener, comprising the pencil clamping mechanism of any one of claims 1-9, further comprising:

the pen feeding mechanism is arranged on the mounting seat; the pen feeding mechanism comprises a first clamping assembly, a second clamping assembly, a rotary disc, a transmission assembly and a spring; the first clamping assembly and the second clamping assembly are arranged at intervals, the distance between the first clamping assembly and the second clamping assembly is adjustable, and the spring is connected between the first clamping assembly and the second clamping assembly; the turntable can drive the first clamping assembly and the second clamping assembly to rotate through the transmission assembly;

the hob cutter comprises a cutter frame and a hob cutter arranged on the cutter frame; the tool rest is connected below the rotary disc.

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