CN218892382U

CN218892382U - Pen feeding structure and pencil sharpener

Info

Publication number: CN218892382U
Application number: CN202223544119.4U
Authority: CN
Inventors: 张�杰; 汤海涛
Original assignee: Wenzhou Gez Stationery Co ltd
Current assignee: Wenzhou Gez Stationery Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-04-21
Anticipated expiration: 2032-12-29

Abstract

The utility model relates to a technical field of pencil sharpener especially relates to a advance a structure and pencil sharpener, an advance a structure includes support, drive assembly and main shaft, drive assembly and support fixed connection, main shaft and support fixed connection and be connected with drive assembly, the through-hole that supplies the pencil to pass is seted up to the support, the main shaft is located the through-hole both sides, clamping wheel and clutch ring have been cup jointed to the main shaft, the clutch ring sets up between clamping wheel and drive assembly, the clutch ring is made by elastic material, the clutch ring both sides all are provided with the recess, drive assembly is provided with the fixed block of corresponding recess towards the one end of clutch ring, clamping wheel is provided with the lug of corresponding recess towards the one end of clutch ring. The pencil sharpener has the effect of prolonging the service life of the pencil sharpener.

Description

Pen feeding structure and pencil sharpener

Technical Field

The application relates to the technical field of pencil sharpener, in particular to a pencil feeding structure and pencil sharpener.

Background

A pencil sharpener is a common stationery used to sharpen pencils for writing or drawing. The pencil feeding structure is an important component structure of the pencil sharpener and is used for clamping and feeding the pencil into the pencil sharpening hob, so that the pencil sharpening hob can cut the pencil, after the pencil sharpening is finished, the pencil point abuts against the pencil blocking block, the pencil feeding structure stops feeding the pencil, and a user can take out the pencil.

The Chinese patent with the bulletin number of CN204263807U discloses an automatic pencil feeding device of a pencil sharpener, which comprises a bracket and a transmission mechanism fixed on the bracket, wherein a shaft matched with the transmission mechanism is also fixed on the bracket, the shafts are respectively arranged on two sides of the transmission mechanism, a sleeve and a rubber wheel fixed on the sleeve are respectively sleeved on the two shafts, and the two rubber wheels are required to be staggered. The transmission mechanism is a worm and gear type and consists of a main gear fixed at the center of the bracket and a transmission gear fixed on the bracket and meshed with the main gear, the transmission gear is fixed with the bracket through a worm, and the transmission mechanism also comprises a worm wheel and a ratchet wheel which are fixed on a shaft.

To the relevant technique among the above-mentioned, prevent through the clamping force of rubber tyer to pencil that the pencil rotates during the use, stagger the design and can make the clamping force bigger, the sleeve pipe can avoid rubber tyer and axle direct contact simultaneously, and then make the pencil not hard when extracting. However, the rubber wheel is in direct contact with the worm wheel, and is driven to rotate by static friction, so that the rubber wheel is required to be softer; the pencil point is propped against the pencil blocking block after sharpening, so that the pencil cannot continue to rotate forwards, and at the moment, if a user continues to rotate the pencil sharpener, the resistance between the pencil and the rubber wheel increases the static friction between the rubber wheel and the worm wheel, so that the rubber wheel is easy to wear towards one side of the worm wheel. Therefore, there is a problem that the rubber wheel is easily worn, resulting in a shorter service life of the pencil sharpener.

Disclosure of Invention

In order to prolong the service life of the pencil sharpener, the application provides a pencil feeding structure and the pencil sharpener.

In a first aspect, the present application provides a pen feeding structure, which adopts the following technical scheme:

the utility model provides a advance a structure, includes support, drive assembly and main shaft, drive assembly and support fixed connection, main shaft and support fixed connection and be connected with drive assembly, the through-hole that supplies the pencil to pass is seted up to the support, the main shaft is located the through-hole both sides, the main shaft has cup jointed pinch roller and clutch ring, the clutch ring sets up between pinch roller and drive assembly, the clutch ring is made by elastic material, the clutch ring both sides all are provided with the recess, drive assembly is provided with the fixed block that corresponds the recess towards the one end of clutch ring, the one end of pinch roller towards the clutch ring is provided with the lug that corresponds the recess.

By adopting the technical scheme, when in use, the pencil passes through the clamping wheels, and the clamping wheels can clamp and fix the pencil; the pencil sharpener is rotated to drive the transmission assembly to rotate, the fixed block drives the clutch ring to rotate, and the clutch ring drives the lug and the clamping wheel to rotate, so that the pencil is sent into the pencil sharpener; after the cutting is finished, because the user can not see the internal cutting condition, the cutter is always rotated continuously, the transmission assembly is rotated continuously, and the pen point is propped against the pen blocking block after the pencil is sharpened, so that the clamping wheel stops rotating, at the moment, the clutch ring can deform, the fixing block is separated from the groove, the clutch ring has a similar idling effect, the clamping wheel is prevented from rotating continuously to feed the pencil into the pencil cutter to lead to the abrasion of the pen point, and meanwhile, the transmission assembly is prevented from directly contacting the clamping wheel to cause abrasion, and the service life is prolonged.

Optionally, a plurality of grooves are uniformly arranged at intervals.

By adopting the technical scheme, the deformation space of the clutch ring can be increased, so that the clutch ring can better play a role.

Optionally, the bump is provided with a plurality of and is located the pinch roller both ends respectively.

Through adopting above-mentioned technical scheme for clamping wheel both sides homoenergetic and clutch ring butt need not to judge the direction of clamping wheel during the equipment, promotes packaging efficiency.

Optionally, the drive assembly includes driving gear, with the driven gear of driving gear meshing, with driven gear fixed connection's worm and with worm wheel of worm meshing, the worm wheel cup joints in the main shaft outside and with clutch ring keep away from the one end butt of clamping wheel, fixed block fixed connection is in the one end of worm wheel orientation clutch ring.

Through adopting above-mentioned technical scheme, the pencil sharpener rotates and drives the driving gear and rotate, and the driving gear drives driven gear and worm and rotates, and the worm drives the worm wheel and rotates, and then drives clutch ring and pinch roller rotation to send into the pencil with the pencil inside the pencil sharpener.

Optionally, the one end that the support is close to the worm has been seted up and has been supplied driven gear pivoted hole of stepping down and fixedly connected with fixed plate, the mounting groove that supplies the worm card to go into has been seted up to the fixed plate.

Through adopting above-mentioned technical scheme, worm easy dismounting promotes packaging efficiency and is convenient for change the worm.

Optionally, the main shaft has cup jointed the locating part, the locating part butt is in the tight wheel of clamp one side that keeps away from the clutch ring.

Through adopting above-mentioned technical scheme, prevent that the pinch roller from moving and keeping away from through-hole department on the main shaft, lead to the pencil unable to pass the pinch roller and get into the pencil sharpener inside.

Optionally, a limit groove corresponding to the bump is formed in one side, facing the clamping wheel, of the limit piece.

Through adopting above-mentioned technical scheme, the design of cooperation lug strengthens spacing effect simultaneously.

Optionally, a clamping groove for clamping the spindle is formed in one end, close to the limiting piece, of the support.

By adopting the technical scheme, the main shaft is convenient to disassemble and assemble, and the assembly efficiency is improved; simultaneously, be convenient for change worm wheel, clutch ring, pinch roller and locating part.

In a second aspect, the present application provides a pencil sharpener, which adopts the following technical scheme:

the utility model provides a pencil sharpener, includes shell, cuts a structure and bits box, bits box sliding connection is in the inboard below of shell, cut a structure and connect in the inboard top of shell, still including above-mentioned pencil structure that advances, pencil structure and cut the structure and be connected and lie in the shell inboard.

By adopting the technical scheme, the abrasion of the pencil feeding structure is reduced, and the service life is long, so that the pencil sharpener is long in service life.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the clutch ring is arranged, so that abrasion of the clamping wheel caused by direct contact between the worm wheel and the clamping wheel is avoided, the service life of the clamping wheel is prolonged, and meanwhile, the pen point abrasion caused by continuous inward movement after pencil cutting is finished can be prevented;

2. by arranging a plurality of grooves, the deformation space of the clutch ring is increased, so that the clutch ring can better play a role similar to idling;

3. through setting up lug, fixed block, recess and spacing groove, ensure the rotation effect to play limiting displacement.

Drawings

Fig. 1 is a schematic view of a pencil sharpener according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a pen feeding structure according to an embodiment of the present application.

Fig. 3 is an exploded schematic view of a pen-feeding structure according to an embodiment of the present application.

Fig. 4 is a schematic view of another view of the pen-feeding structure according to the embodiment of the present application.

Reference numerals illustrate: 1. a bracket; 11. a through hole; 12. a relief hole; 13. a fixing plate; 131. a mounting groove; 14. a clamping groove; 2. a transmission assembly; 21. a drive gear; 22. a driven gear; 23. a worm; 24. a worm wheel; 241. a fixed block; 3. a main shaft; 4. a pinch roller; 41. a bump; 5. a clutch ring; 51. a groove; 6. a limiting piece; 61. a limit groove; 7. a housing; 8. a pencil sharpening structure; 9. a pen feeding structure; 10. and a chip box.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-4.

The embodiment of the application discloses a pencil sharpener.

Referring to fig. 1, a pencil sharpener includes a housing 7, a pencil sharpening structure 8, a pencil feeding structure 9 and a chip box 10, wherein the pencil sharpening structure 8 is rotatably connected with the pencil feeding structure 9 and is located in the housing 7, and the chip box 10 is slidably connected under the inner side of the housing 7, wherein the housing 7, the pencil sharpening structure 8 and the chip box 10 are all in the prior art. The user puts the pencil into the pencil sharpener, and the pencil is fixed to pencil feeding structure 9 centre gripping and send pencil to pencil sharpening structure 8 department, and pencil sharpening structure 8 cuts the pencil, and the pencil bits that the cutting obtained fall into bits box 10, and the back is accomplished in the cutting, and the user can directly draw out the pencil.

Referring to fig. 2 and 3, the pen feeding structure 9 includes a bracket 1, a transmission assembly 2, a spindle 3, a clamping wheel 4, a clutch ring 5, and a stopper 6. The bracket 1 is provided with a through hole 11 for a pencil to pass through, the transmission assembly 2 is fixedly connected with the bracket 1, and the main shaft 3 is arranged at two ends of the bracket 1 in a penetrating way and is provided with two through holes 11 at two sides; the clamping wheel 4, the clutch ring 5 and the limiting piece 6 are sequentially arranged on the main shaft 3 and are provided with two clamping wheels; the diameter of the middle part of the clamping wheel 4 is smaller than that of the two ends and is concave inwards, and the two clamping wheels 4 are arranged in a staggered way, so that pencil clamping is facilitated; the clamping wheel 4 is made of wear-resistant materials with high hardness, and the clutch ring 5 is made of elastic materials. The transmission assembly 2 comprises a driving gear 21, a driven gear 22, a worm 23 and a worm wheel 24, wherein the driving gear 21 is fixedly connected to the bracket 1 at the position corresponding to the through hole 11; the driven gear 22 is fixedly connected to one end of the bracket 1 and meshed with the driving gear 21; the worm 23 is fixedly connected to one side of the driven gear 22 away from the bracket 1; the worm wheel 24 is provided with two and cup joints respectively in two main shafts 3 and is close to the one end of worm 23, and two worm wheel 24 all meshes with worm 23, realizes when worm 23 rotates, and two worm wheel 24 counter-rotation.

Referring to fig. 2 and 3, a plurality of grooves 51 are uniformly provided at intervals on both sides of the clutch ring 5, the protrusions 41 corresponding to the grooves 51 are fixedly connected to both sides of the clamping wheel 4, and the fixing block 241 corresponding to the grooves 51 is fixedly connected to one side of the worm wheel 24 facing the clutch ring 5. In this application, the clutch ring 5, the clamping wheel 4 and the worm wheel 24 are all separately arranged, and in other embodiments, the clutch ring 5 may be fixedly connected to the clamping wheel 4 or fixedly connected to the worm wheel 24.

When the pencil is sharpened, the pencil stretches into between the clamping wheels 4 and is clamped and fixed by the clamping wheels 4, the pencil sharpener is rotated to drive the driving gear 21 to rotate, the driving gear 21 drives the driven gear 22 and the worm 23 to rotate, the worm 23 rotates to drive the two worm gears 24 to reversely rotate, the fixed block 241 drives the clutch ring 5 to rotate, and the clutch ring 5 drives the clamping wheels 4 to reversely rotate, so that the pencil is fed inwards. After the pencil is cut, the user can always rotate the pencil sharpener continuously because the internal cutting condition of the pencil sharpener cannot be seen, the transmission assembly 2 can continuously rotate, but the pen point of the pencil abuts against the internal pencil blocking block and cannot continuously move, the clamping wheel 4 stops rotating, the clutch ring 5 is deformed at the moment, the protruding block 41 and the fixing block 241 leave the groove 51, and the clutch ring 5 has an idle-like effect. On the one hand, the pencil can be prevented from being continuously moved to lead the pencil point to be worn due to the rotation of the clamping wheel 4; on the other hand, the clamping wheel 4 is prevented from being in direct contact with the worm wheel 24, so that the abrasion of the clamping wheel 4 is reduced, and the service life is prolonged.

Referring to fig. 2 and 3, in the present application, the limiting member 6 is a limiting sleeve sleeved on the outer side of the spindle 3, one end of the limiting sleeve is abutted with the bracket 1, the other end of the limiting sleeve is abutted with the clamping wheel 4, and limiting grooves 61 corresponding to the protruding blocks 41 are formed in two ends of the limiting sleeve, so that the assembly efficiency can be improved without considering the installation direction during the assembly. In other embodiments, the limiting member 6 may be provided as a limiting ring fixedly connected to the spindle 3, and a limiting groove 61 corresponding to the protrusion 41 is formed in a side of the limiting ring facing the clamping wheel 4.

Referring to fig. 2 and 4, a relief hole 12 corresponding to the worm 23 is formed at one end of the bracket 1, which is close to the worm wheel 24, so as to ensure that the driven gear 22 can normally rotate. The upper side of one end of the bracket 1, which is close to the worm wheel 24, is fixedly connected with a fixing plate 13, the fixing plate 13 is provided with a mounting groove 131 corresponding to the worm 23, and the worm 23 is directly clamped into the mounting groove 131 during mounting. The end of the bracket 1, which is close to the limiting piece 6, is provided with a clamping groove 14 for clamping the main shaft 3, and the main shaft 3 is directly clamped into the clamping groove 14 during installation.

The implementation principle of the pencil feeding structure and the pencil sharpener in the embodiment of the application is as follows: putting the pencil into a pencil sharpener, clamping the pencil by a clamping wheel 4, rotating the pencil sharpener to drive a transmission assembly 2 to rotate, further driving a clutch ring 5 to rotate, and driving the clamping wheel 4 to rotate by the clutch ring 5 so as to send the pencil into a pencil sharpening structure 8 for sharpening; after the pencil is cut, the pencil stops moving inwards, so that the clamping wheel 4 stops rotating, the transmission assembly 2 continues to rotate, the clutch ring 5 deforms to generate an idle-like effect, the pencil is prevented from moving inwards to cause abrasion of a pencil point, and meanwhile, the clutch ring 5 can prevent the worm wheel 24 from being in direct contact with the clamping wheel 4 to cause abrasion of the clamping wheel 4.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides a advance a structure, includes support (1), drive assembly (2) and main shaft (3), drive assembly (2) and support (1) fixed connection, main shaft (3) and support (1) fixed connection and be connected with drive assembly (2), through-hole (11) that supply the pencil to pass are seted up to support (1), main shaft (3) are located through-hole (11) both sides, its characterized in that: the novel clutch device is characterized in that the main shaft (3) is sleeved with the clamping wheel (4) and the clutch ring (5), the clutch ring (5) is arranged between the clamping wheel (4) and the transmission assembly (2), the clutch ring (5) is made of elastic materials, grooves (51) are formed in two sides of the clutch ring (5), a fixing block (241) corresponding to the grooves (51) is arranged at one end, facing the clutch ring (5), of the transmission assembly (2), and a lug (41) corresponding to the grooves (51) is arranged at one end, facing the clutch ring (5), of the clamping wheel (4).

2. A pen-feeding structure according to claim 1, wherein: the grooves (51) are uniformly arranged at intervals.

3. A pen-feeding structure according to claim 1, wherein: the lugs (41) are arranged in a plurality and are respectively positioned at two ends of the clamping wheel (4).

4. A pen-feeding structure according to claim 1, wherein: the transmission assembly (2) comprises a driving gear (21), a driven gear (22) meshed with the driving gear (21), a worm (23) fixedly connected with the driven gear (22) and a worm wheel (24) meshed with the worm (23), wherein the worm wheel (24) is sleeved on the outer side of the main shaft (3) and is abutted to one end, far away from the clamping wheel (4), of the clutch ring (5), and the fixing block (241) is fixedly connected to one end, facing the clutch ring (5), of the worm wheel (24).

5. The pen feeding structure according to claim 4, wherein: one end of the bracket (1) close to the worm (23) is provided with a yielding hole (12) for the driven gear (22) to rotate and is fixedly connected with a fixing plate (13), and the fixing plate (13) is provided with a mounting groove (131) for the worm (23) to clamp in.

6. A pen-feeding structure according to claim 1, wherein: the main shaft (3) is sleeved with a limiting piece (6), and the limiting piece (6) is abutted to one side, far away from the clutch ring (5), of the clamping wheel (4).

7. The pen feeding structure according to claim 6, wherein: and a limiting groove (61) corresponding to the lug (41) is formed in one side, facing the clamping wheel (4), of the limiting piece (6).

8. The pen feeding structure according to claim 6, wherein: one end of the bracket (1) close to the limiting piece (6) is provided with a clamping groove (14) for clamping the main shaft (3).

9. The utility model provides a pencil sharpener, includes shell (7), cuts a structure (8) and bits box (10), bits box (10) sliding connection is in shell (7) inboard below, cut a structure (8) and connect in shell (7) inboard top, its characterized in that: the pencil sharpener further comprises a pencil feeding structure (9) according to any one of claims 1-8, wherein the pencil feeding structure (9) is connected with the pencil sharpening structure (8) and is positioned on the inner side of the housing (7).