CN212242774U

CN212242774U - Pencil feeding mechanism of pencil sharpener

Info

Publication number: CN212242774U
Application number: CN202020571578.3U
Authority: CN
Inventors: 娄宗茂
Original assignee: Jinyi Stationery Co ltd
Current assignee: Jinyi Stationery Co ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-12-29
Anticipated expiration: 2030-04-16

Abstract

The utility model relates to a pencil sharpener technical field discloses a pencil sharpener advance a mechanism, including: the mounting seat is provided with mounting grooves on two sides and a mounting hole in the middle; the transmission assembly comprises a rotary table, a first gear shaft and a second gear shaft; the first gear shaft and the second gear shaft are oppositely arranged in the mounting groove and both comprise a rotating shaft and a bevel gear connected to one end of the rotating shaft; the turntable is arranged in the mounting hole and is positioned below the first gear shaft and the second gear shaft, and the turntable is provided with a bevel block for driving the bevel gear; the clamping piece is sleeved at the other end of each of the two rotating shafts, and a gap exists between the clamping piece and the inclined block. The utility model has the advantages of, this advance a device all very smooth and easy when the pencil injects and withdraws from, no jamming, pause and pause are frustrated and are felt.

Description

Pencil feeding mechanism of pencil sharpener

Technical Field

The utility model relates to a pencil sharpener technical field especially relates to a pencil sharpener advance a mechanism.

Background

The pencil feeding mechanism of the pencil sharpener is an important device which is arranged at the top of the pencil sharpener, can automatically feed a pencil for sharpening and smoothly draw out the pencil from the pencil sharpener after the pencil is sharpened.

In the existing pen feeding mechanism, a turntable is used for driving two gear shafts, so that the two gear shafts 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.

In consideration of the smoothness of movement and the reduction of the impact feeling of feeding and withdrawing of the pencil, the gear on the gear shaft is usually arranged to be a helical gear; the helical gear is driven to rotate through the meshing transmission of the convex block on the turntable and the helical gear. The existing structure has the problems that when a pencil is inserted into the pencil sharpener and fed, the pencil is smooth, but when the pencil is sharpened and withdrawn, the situation of clamping stagnation and unsmooth often occurs.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved in the present invention is to provide a pen feeding mechanism with smooth feeding and withdrawing, jamming and pause-and-pause-contusion.

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

the mounting seat is provided with mounting grooves on two sides and a mounting hole in the middle;

the transmission assembly comprises a rotary table, a first gear shaft and a second gear shaft; the first gear shaft and the second gear shaft are oppositely arranged in the mounting groove and both comprise a rotating shaft and a bevel gear connected to one end of the rotating shaft; the turntable is arranged in the mounting hole and is positioned below the first gear shaft and the second gear shaft, and the turntable is provided with a bevel block for driving the bevel gear;

the clamping piece, two all overlap on the other end of pivot and be equipped with the clamping piece, and the clamping piece with there is the clearance between the sloping block.

Further, the inclination direction of the inclined block is the same as the inclination direction of the gear teeth of the bevel gear, so that the inclined block and the bevel gear are in meshing transmission.

Furthermore, a plurality of the oblique blocks are uniformly distributed on the top of the rotary table along the circumferential direction of the rotary table.

Furthermore, the carousel downwardly protrudes a connecting cylinder that is hollow setting, the connecting cylinder wear to establish in the mounting hole, and the connecting cylinder outside has at least one straight wall.

Further, the turntable can drive the first gear shaft to rotate clockwise or anticlockwise; the turntable can drive the second gear shaft to rotate anticlockwise or clockwise; and the turntable can drive the first gear shaft and the second gear shaft to rotate in opposite directions simultaneously.

Furthermore, the clamping piece on the first gear shaft and the clamping piece on the second gear shaft are arranged oppositely; and the clamping piece comprises a clamping block and a shaft sleeve which are arranged in a split mode, the shaft sleeve is sleeved at the other end of the rotating shaft, and the clamping block is sleeved on the shaft sleeve.

Further, the mounting groove is U-shaped.

Furthermore, the device also comprises a cover body which is covered on the mounting seat; the cover body is provided with an arc-shaped groove matched with the mounting groove; the rotating shaft is also arranged in the arc-shaped groove.

Furthermore, two hooks are symmetrically arranged on the mounting seat, two clamping grooves corresponding to the two hooks one to one are formed in the cover body, and the hooks are detachably clamped in the clamping grooves.

Furthermore, the cover body is also provided with two guide posts; the cross section area of the guide post is gradually reduced from one end close to the mounting seat to one end far away from the mounting seat; and the mounting seat is provided with a guide groove for accommodating the guide post.

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

in the utility model, a plurality of inclined blocks are evenly distributed on the turntable along the circumferential direction of the turntable, the inclined direction of the inclined blocks is the same as the inclined direction of the bevel gears on the first gear shaft and the second gear shaft, and the inclined blocks are in meshing transmission with the bevel gears, so that when a pencil enters or exits, the smooth lifting motion of the pencil can be well ensured, and the retardation sense is small; the mounting groove on the mounting seat is provided with a U-shaped groove, so that the first gear shaft and the second gear shaft can be quickly and simply disassembled, the position of the cover body corresponding to the U-shaped mounting groove is provided with an arc-shaped groove matched with the U-shaped mounting groove, the inner wall of the mounting groove and the inner wall of the arc-shaped groove are attached to the rotating shafts of the first gear shaft and the second gear shaft, the rotating shafts can be conveniently disassembled and rapidly, the positions of the rotating shafts can be limited, and the rotating precision of the rotating shafts can be guaranteed; the whole structure is compact, and the noise is low during working.

Drawings

FIG. 1 is a schematic view of the overall structure of the pen feeding mechanism of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 3 is an exploded view of the overall structure;

FIG. 4 is a schematic structural view of FIG. 1 with the cover removed;

FIG. 5 is a schematic structural view of the cover;

FIG. 6 is a schematic plan view of FIG. 5;

fig. 7 is a schematic structural view of the turntable.

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

1. a mounting seat; 10. mounting grooves; 11. mounting holes; 12. a hook;

2. a transmission assembly; 20. a turntable; 21. a first gear shaft; 22. a second gear shaft; 201. a sloping block; 202. a connecting cylinder; 2020. a straight wall; 210. a rotating shaft; 211. a helical gear;

3. a clamping member; 30. a clamping block; 31. a shaft sleeve;

4. a cover body; 40. an arc-shaped slot; 41. a card slot; 42. a guide post; 43. and a positioning column.

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. 1-4, a pencil feeding mechanism of a pencil sharpener comprises: mount pad 1, transmission assembly 2, holder 3 and lid 4.

Mounting groove 10 has been seted up to mount pad 1, both sides, and the mounting hole 11 has been seted up at the middle part.

The transmission assembly 2 comprises a rotary table 20, a first gear shaft 21 and a second gear shaft 22; the first gear shaft 21 and the second gear shaft 22 are oppositely arranged in the mounting groove 10, and both comprise a rotating shaft 210 and a bevel gear 211 connected to one end of the rotating shaft 210; the rotary table 20 is disposed in the mounting hole 11 and below the first gear shaft 21 and the second gear shaft 22, and the rotary table 20 has a swash block 201 thereon for driving the helical gear 211.

And the clamping piece 3 is sleeved at the other end of the rotating shaft 210, and a gap exists between the clamping piece 3 and the inclined block 201. That is, the clamp 3 is suspended with respect to the ramp 201, so that the turntable 20 does not directly drive the clamp 3 and interfere with the movement of the clamp 3 when the turntable 20 rotates.

Preferably, the inclined direction of the inclined block 201 is the same as the gear tooth inclined direction of the helical gear 211, so that the inclined block 201 and the helical gear 211 are in mesh transmission, and in the conventional structure, a cylindrical convex column is used for driving the helical gear, although the manufacturing is relatively simple, when the pencil is cut off and is withdrawn out of the pencil sharpener, the situation of clamping stagnation often occurs. In the structure, the inclined block 201 which has the same inclined direction as the inclined gear 211 is meshed with the inclined gear 211 for transmission, so that smoothness is guaranteed when a pen is fed or a pencil is withdrawn, and the user experience is improved; the pitch between the teeth of the bevel gear 211 is larger on the side close to the bevel block 201 and smaller on the side far from the bevel block 201, so that the smooth meshing between the bevel block 201 and the bevel gear 211 is ensured. Specifically, as shown in the figure, the plurality of the inclined blocks 201 are uniformly distributed on the top of the turntable 20 along the circumferential direction thereof, and a plurality of round corners are arranged on the top of the inclined blocks 201, so that the inclined blocks 201 are prevented from forming sharp corners, and the service life of the gear teeth of the bevel gear 211 is influenced.

As shown in fig. 2-3, the rotary disc 20 downwardly protrudes a connecting cylinder 202 disposed in a hollow manner, the connecting cylinder 202 is inserted into the mounting hole 11, and the connecting cylinder 202 has at least one straight wall 2020 on the outside. The connecting barrel 202 is hollow for insertion of a pencil and has a plurality of straight walls 2020, four in this case, for rotation of the rotary plate 20 when the holder (not shown) of the pencil sharpener is rotated.

Wherein, the turntable 20 can drive the first gear shaft 21 to rotate clockwise or counterclockwise; likewise, the turntable 20 can drive the second gear shaft 22 to rotate counterclockwise or clockwise; and the turntable 20 can drive the first gear shaft 21 and the second gear shaft 22 to rotate in opposite directions at the same time, so that the pencil can be inserted into the pencil sharpener and withdrawn from the pencil sharpener, and only the rotating directions of the first gear shaft 21 and the second gear shaft 22 need to be changed. Preferably, the clamping piece 3 on the first gear shaft 21 is arranged opposite to the clamping piece 3 on the second gear shaft 22; and the clamping piece 3 comprises a clamping block 30 and a shaft sleeve 31 which are arranged in a split manner, the shaft sleeve 31 is sleeved at the other end of the rotating shaft 210, the clamping block 30 is sleeved on the shaft sleeve 31, and a V-shaped groove with a V-shaped cross section is formed in the middle of the clamping block 30 and used for a pencil to penetrate through.

As shown in fig. 5-6, the pen feeding mechanism further comprises a cover body 4 covering the mounting base 1; the cover body 4 is provided with an arc-shaped groove 40 matched with the mounting groove 10; the rotation shaft 210 is also disposed in the arc-shaped groove 40. The mounting groove 10 is U-shaped, and U-shaped groove and arc wall 40 are with the restriction of pivot 210, guarantee that pivot 210 can not take place to rock and shift when rotating, and the mounting groove 10 of U type makes things convenient for first gear shaft 21 of dismouting and second gear shaft 22 again.

Two hooks 12 are symmetrically arranged on the mounting base 1, two clamping grooves 41 corresponding to the two hooks 12 one by one are arranged on the cover body 4, the hooks 12 are detachably clamped in the clamping grooves 41, and two guide columns 42 are further arranged on the cover body 4; the cross section area of the guide post 42 is gradually reduced from one end close to the mounting seat 1 to one end far away from the mounting seat 1; the mounting seat 1 is provided with a guide groove (not marked in the figure) for accommodating the guide column 42, the guide column 42 is arranged to facilitate the rapid assembly of the cover body 4 and the mounting seat 1, a pair of positioning columns 43 is arranged at the opposite corners of the cover body 4 and used for positioning and fixing the cover body 4 and the mounting seat 1, the cover body 4 and the mounting seat 1 seal the transmission assembly 2, and the influence of impurities such as pen scraps on the normal work of the first gear shaft 21 and the second gear shaft 22 is prevented.

The pencil feeding mechanism of the scheme is smooth when a pencil enters and exits the pencil sharpener, and does not have 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

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

2. The advancing mechanism of a sharpener according to claim 1, wherein the direction of inclination of said swash block is the same as the direction of inclination of the teeth of said bevel gear, so that said swash block is in meshing engagement with said bevel gear.

3. The pencil feeding mechanism of claim 1 or 2, wherein a plurality of said blocks are uniformly distributed on the top of said turntable along the circumference thereof.

4. The feeding mechanism of claim 3, wherein the rotary plate protrudes downwardly a connecting cylinder, the connecting cylinder is disposed in the mounting hole, and the connecting cylinder has at least one straight wall.

5. The pencil feeding mechanism of the pencil sharpener of claim 1 or 2, wherein the rotary disc drives the first gear shaft to rotate clockwise or counterclockwise; the turntable can drive the second gear shaft to rotate anticlockwise or clockwise; and the turntable can drive the first gear shaft and the second gear shaft to rotate in opposite directions simultaneously.

6. The pencil feeding mechanism of claim 1, wherein the clamping member of the first gear shaft is disposed opposite to the clamping member of the second gear shaft; and the clamping piece comprises a clamping block and a shaft sleeve which are arranged in a split mode, the shaft sleeve is sleeved at the other end of the rotating shaft, and the clamping block is sleeved on the shaft sleeve.

7. The pencil sharpener mechanism of claim 1 wherein said mounting slot is U-shaped.

8. The pencil sharpener mechanism of claim 7 further comprising a cap disposed over said mounting base; the cover body is provided with an arc-shaped groove matched with the mounting groove; the rotating shaft is also arranged in the arc-shaped groove.

9. The feeding mechanism of claim 8, wherein the mounting base is symmetrically provided with two hooks, the cover is provided with two slots corresponding to the two hooks, and the hooks are detachably engaged with the slots.

10. The advancing mechanism of a sharpener according to claim 8, wherein said cover body further has two guide posts; the cross section area of the guide post is gradually reduced from one end close to the mounting seat to one end far away from the mounting seat; and the mounting seat is provided with a guide groove for accommodating the guide post.