CN217495675U

CN217495675U - Pencil sharpener structure of polyurethane shell

Info

Publication number: CN217495675U
Application number: CN202221183469.XU
Authority: CN
Inventors: 胡杰; 陈辉; 王淑燕; 张国斌
Original assignee: Ningbo Jinsui Rubber And Plastic Co ltd
Current assignee: Ningbo Jinsui Rubber And Plastic Co ltd
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-09-27
Anticipated expiration: 2032-05-16

Abstract

A pencil sharpener structure with a polyurethane shell comprises a shell, a rocking handle, a clamping frame, a clamping mechanism and a cutting part, wherein a driving gear is arranged on the rocking handle, a driving shaft sleeve is arranged on the shell above the rocking handle, a transmission gear is concentrically arranged on the outer surface of the driving shaft sleeve and meshed with the driving gear, threads are arranged on the inner wall of the driving shaft sleeve, one end of a driving screw rod is in threaded connection with the driving shaft sleeve, and the other end of the driving screw rod penetrates through the shell and can be connected with the clamping frame in a relative rotating mode. The utility model has the advantages that: the driving screw rod is driven by the driving shaft sleeve to stretch out and retract at a constant speed, and the clamping frame retracts due to the fact that the reset spring is not used any more, so that the clamping frame is not required to be jacked by the jacking rod when the pencil is just inserted into the shell, the jacking rod of the clamping frame is omitted, and the problems that the jacking rod of the clamping frame and the pencil sharpener shell are blocked easily and are not easy to separate when the pencil is just clamped into the pencil sharpener in the existing structure are solved.

Description

Pencil sharpener structure of polyurethane shell

Technical Field

The utility model relates to a pencil sharpener structure especially indicates a pencil sharpener structure of polyurethane casing.

Background

The existing Chinese patent application with the application number of CN201611190849.5 entitled Pencil sharpener capable of automatically generating electricity to detect and prevent excessive cutting discloses a pencil sharpener capable of automatically generating electricity to detect and prevent excessive cutting, which comprises a pencil sharpener shell, a rocker arm, a locker, a locking handle, a scrap box, a sliding rod, a rotary knife, a transmission gear A, a transmission gear B, a micro-motion light-touch switch, an indicator light, a generator, a spring tensioner, a transmission gear C and a transmission gear D. The pencil sharpener judges whether the sharpening is finished or not by detecting whether the micro-motion light-touch switch is touched by the pencil point or not, and the connection between the indicator lamp and the internal generator is switched on or off according to the state of the micro-motion light-touch switch so as to prompt the finishing of the sharpening. However, the pencil sharpener does not solve the problem that the ejector rod of the clamping frame and the pencil sharpener shell are easy to clamp and not easy to separate when the pencil is just clamped into the pencil sharpener, so the structure of the pencil sharpener needs to be further improved.

Disclosure of Invention

The utility model aims to solve the technical problem that a pencil card can get into the pencil sharpener cutting portion after going into the pencil sharpener smoothly is provided to above-mentioned prior art current situation, and the pencil cuts the pencil sharpener structure of smooth polyurethane casing.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: this pencil sharpener structure of polyurethane casing, including the casing, set up rocking handle on the casing, can stretch out and the card frame of withdrawal relative to the casing, set up on the card frame and can carry and loosen fixture of pencil, can rotate and the cutting portion of book pencil, its characterized in that by the relative fixture of rocking handle drive: the driving gear is arranged on the rocking handle, the driving shaft sleeve capable of rotating relative to the shell is arranged on the shell above the rocking handle, the transmission gear is concentrically arranged on the outer surface of the driving shaft sleeve and meshed with the driving gear, threads are arranged on the inner wall of the driving shaft sleeve, one end of the driving screw rod is in screwed connection with the driving shaft sleeve, and the other end of the driving screw rod penetrates through the shell and is connected with the clamping frame in a relative rotating mode.

As an improvement, the clamping frame comprises a clamping plate and a guide rod arranged on the end face of the clamping plate, a clamping plate through hole capable of penetrating a pencil is formed in the clamping plate, the clamping mechanism is arranged on the clamping plate through hole, a guide hole capable of being inserted into the guide rod is formed in the shell, and the guide rod can extend out of and retract back along the corresponding guide hole.

The improved structure is characterized in that a buffer spring is arranged in the guide hole, one end of the buffer spring is abutted against the bottom end of the guide hole, and the other end of the buffer spring is abutted against the end part of the corresponding guide rod.

The improved structure is characterized in that the number of the guide rods is two, and the two guide rods are distributed on the end faces of the clamping plates on the two sides of the driving screw rod in a bilateral symmetry mode.

As an improvement, the shell is a hollow shell with an opening on the front side wall, the driving gear and the driving shaft sleeve are both positioned in an inner cavity of the shell, an opening cover plate is arranged on the opening on the front side wall of the shell, and a cover plate through hole capable of penetrating through the driving screw rod and the guide rod is arranged on the opening cover plate.

The cutting material collecting box is inserted into the inner cavity of the shell below the opening cover plate, and the side wall of the cutting material collecting box covers the opening of the front side wall of the shell below the opening cover plate.

The improved pencil sharpener is characterized in that the clamping mechanism comprises a push rod, a chuck, clamping jaws and a resetting mechanism of the chuck, the chuck can be rotatably connected to the clamping plate, the chuck is rotatably connected with one end of the push rod, the push rod is movably connected with the clamping plate, the other end of the push rod extends out of the side wall of the clamping plate, chuck through holes capable of penetrating pencils are formed in the chuck, the clamping jaws are distributed on the clamping plate around the chuck through holes, the clamping jaws are rotatably connected with the clamping plate and rotatably connected with the chuck, the chuck is connected with the clamping plate through the resetting mechanism, when one end of the push rod is pushed, the chuck rotates to push the clamping jaws to be drawn in towards one side of the chuck through holes, when the push rod is loosened, the resetting mechanism enables the chuck to rotate reversely to push the clamping jaws to disperse towards one side far away from the chuck through holes, the resetting mechanism is an elastic rod, one end of the elastic rod is connected with the chuck, the other end of the elastic rod is connected with the clamping plate.

The pencil is further improved, and the side wall of the clamping jaw is provided with a clamping jaw bulge capable of increasing the friction force between the clamping jaw and the pencil.

As an improvement, the cutting part comprises a sleeve which is arranged at the front part of the rocking handle and can be sleeved with the pencil head, a roller cutter which is arranged on one side of the sleeve and can rotate relative to the sleeve, and a driving mechanism which can drive the roller cutter to rotate relative to the sleeve, wherein the roller cutter is connected with the rocking handle through the driving mechanism, a side wall opening is arranged on one side of the sleeve, and a cutter body of the roller cutter extends into the side wall opening and can cut the pencil head.

The improved structure of the drum cutter is characterized in that the driving mechanism is an internal gear connected to the rocking handle, the drum cutter is sleeved on a drum shaft on one side of the sleeve, a drum transmission gear is arranged at the end part of the drum cutter, and the drum transmission gear is meshed with the internal gear.

Compared with the prior art, the utility model has the advantages of: the shell is made of polyurethane, so that the forming efficiency is high, the shell is wear-resistant and corrosion-resistant, and the service life is long; the driving screw rod is driven by the driving shaft sleeve to extend out and retract at a constant speed, and the reset spring is not used for pulling the clamping frame to retract, so that the ejector rod does not need to be used for ejecting the clamping frame when a pencil is just inserted into the shell, the use of the ejector rod of the clamping frame is omitted, and the problems that the ejector rod of the clamping frame and the shell of the pencil sharpener are easy to clamp and difficult to separate when the pencil is just clamped into the pencil sharpener in the conventional structure are solved; in addition, by adopting the structure, the pencil can smoothly advance, and when the pencil is curled and cut too fast, the rocking handle can be reversely rotated, so that the head of the pencil is matched with the roller cutter again.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention;

FIG. 2 is a perspective view of FIG. 1 at another angle;

FIG. 3 is a perspective view of the card of FIG. 1 open;

FIG. 4 is a top view of FIG. 3 with a pencil inserted therein;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

FIG. 6 is an exploded view of the structure of FIG. 1;

FIG. 7 is a further exploded view of the housing of FIG. 6 with the non-exploded portion removed;

FIG. 8 is a further exploded view of the rocker and cutting portion of FIG. 7 with the rocker and cutting portion removed;

FIG. 9 is a schematic view of the chuck of FIG. 8 shown separated from the reset mechanism of the chuck;

FIG. 10 is a schematic view of the chuck, jaws and push rod of FIG. 9 shown separated;

FIG. 11 is an exploded view of the rocker handle and cutting portion of FIG. 7.

Detailed Description

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

As shown in fig. 1 to 11, the pencil sharpener structure of the polyurethane casing according to the present embodiment includes a casing 1, a rocking handle 2 disposed on the casing 1, a clamping frame capable of extending and retracting relative to the casing 1, a clamping mechanism disposed on the clamping frame and capable of clamping and releasing a pencil 4, a cutting portion capable of being rotated relative to the clamping mechanism by the rocking handle 2 to sharpen the pencil 4, a driving gear 21 disposed on the rocking handle 2, a driving sleeve 3 capable of rotating relative to the casing 1 disposed on the casing 1 above the rocking handle 2, a transmission gear 31 concentrically disposed on an outer surface of the driving sleeve 3, the transmission gear 31 engaged with the driving gear 21, a thread disposed on an inner wall of the driving sleeve 3, one end of a driving screw 5 screwed into the driving sleeve 3, and the other end of the driving screw 5 passing through the casing 1 and being relatively rotatably connected with the clamping frame.

The card frame includes cardboard 6 and the guide bar 61 of setting on 6 terminal surfaces of cardboard, is provided with the cardboard through-hole that can pass pencil 4 on cardboard 6, and fixture sets up on the cardboard through-hole, is provided with the guiding hole that can insert guide bar 61 on casing 1, and the guiding hole that corresponds can be followed to guide bar 61 stretches out and retracts. A buffer spring 62 is disposed in the guide hole, one end of the buffer spring 62 abuts against the bottom end of the guide hole, and the other end of the buffer spring 62 abuts against the end of the corresponding guide rod 61. The number of the guide rods 61 is two, and the two guide rods 61 are distributed on the end faces of the clamping plates 6 on the two sides of the driving screw rod 5 in a bilateral symmetry manner.

The shell 1 is a hollow shell with an opening on the front side wall, the driving gear 21 and the driving shaft sleeve 3 are both positioned in the inner cavity of the shell, an opening cover plate 11 is arranged on the opening on the front side wall of the shell 1, and a cover plate through hole capable of penetrating through the driving screw rod 5 and the guide rod 61 is arranged on the opening cover plate 11. A cutting material collecting box 12 is inserted in the inner cavity of the shell below the opening cover plate, and the side wall of the cutting material collecting box 12 covers the front side wall opening of the shell 1 below the opening cover plate.

The clamping mechanism comprises a push rod 71, a chuck 7, a jaw 72 and a resetting mechanism of the chuck 7, the chuck 7 can be rotatably connected to the chuck plate 6, the chuck 7 is rotatably connected with one end of the push rod 71, the push rod 71 is movably connected with the chuck plate 6, the other end of the push rod 71 extends out of the side wall of the chuck plate 6, chuck through holes capable of penetrating the pencil 4 are formed in the chuck 7, the jaw 72 is distributed on the chuck plate 6 around the chuck through holes, the jaw 72 is rotatably connected with the chuck plate 6, the jaw 72 is rotatably connected with the chuck 7, the chuck 7 is connected with the chuck plate 6 through the resetting mechanism, when one end of the push rod 71 is pushed, the chuck 7 rotates to push the jaw 72 to be folded towards one side of the chuck through holes, when the push rod 71 is loosened, the resetting mechanism enables the chuck 7 to rotate reversely to push the jaw 72 to be dispersed towards one side far away from the chuck through holes, the resetting mechanism is an elastic rod 73, one end of the elastic rod 73 is connected with the chuck 7, the other end of the elastic rod 73 is connected with the catch plate 6. A claw projection 721 which can increase the friction between the claw 72 and the pencil 4 is provided on the side wall of the claw 72.

The cutting portion comprises a sleeve 8 which is arranged at the front part of a rocking handle 2 and can be sleeved with the head part of a pencil 4, a roller cutter 81 which is arranged on one side of the sleeve 8 and can rotate relative to the sleeve 8 can drive the roller cutter 81 to rotate relative to the sleeve 8, the roller cutter 81 is connected with the rocking handle 2 through a driving mechanism, a side wall opening is arranged on one side of the sleeve 8, and a cutter body of the roller cutter 81 extends into the side wall opening to cut the head part of the pencil 4. The driving mechanism is an internal gear 22 connected to the rocking handle 2, the roller cutter 81 is sleeved on a roller shaft at one side of the sleeve 8, a roller transmission gear 82 is arranged at the end part of the roller cutter 81, and the roller transmission gear 82 is meshed with the internal gear 22.

Claims

1. The utility model provides a pencil sharpener structure of polyurethane casing, includes casing (1), rocking handle (2) of setting on casing (1), can stretch out and the card frame of withdrawal relatively casing (1), set up on the card frame and can carry and loosen the fixture of pencil (4), can rotate and the cutting portion of book sharpening pencil (4) by rocking handle (2) drive relatively fixture, its characterized in that: be provided with drive gear (21) on rocking handle (2), be provided with casing (1) pivoted drive axle sleeve (3) relatively on casing (1) of rocking handle (2) top be provided with on the surface of drive axle sleeve (3) with one heart be provided with drive gear (31), drive gear (31) and drive gear (21) mesh mutually be provided with the screw thread on the inner wall of drive axle sleeve (3), the one end spiro union of drive lead screw (5) is in drive axle sleeve (3), the other end of drive lead screw (5) passes casing (1) and links together with card frame ability relatively rotation.

2. The sharpener structure of claim 1 wherein: the clamping frame comprises a clamping plate (6) and a guide rod (61) arranged on the end face of the clamping plate (6), a clamping plate through hole capable of penetrating the pencil (4) is formed in the clamping plate (6), the clamping mechanism is arranged on the clamping plate through hole, a guide hole capable of being inserted into the guide rod (61) is formed in the shell (1), and the guide rod (61) can extend out of and retract back along the corresponding guide hole.

3. The sharpener structure of claim 2 wherein: and a buffer spring (62) is arranged in the guide hole, one end of the buffer spring (62) is pressed against the bottom end of the guide hole, and the other end of the buffer spring (62) is pressed against the end part of the corresponding guide rod (61).

4. The sharpener structure of claim 3 wherein: the number of the guide rods (61) is two, and the two guide rods (61) are distributed on the end faces of the clamping plates (6) on the two sides of the driving screw rod (5) in a bilateral symmetry mode.

5. The sharpener structure of any one of claims 2-4 wherein: the shell (1) is a hollow shell with an opening on the front side wall, the driving gear (21) and the driving shaft sleeve (3) are both positioned in the inner cavity of the shell, an opening cover plate (11) is arranged on the opening on the front side wall of the shell (1), and a cover plate through hole capable of penetrating through the driving screw rod (5) and the guide rod (61) is arranged on the opening cover plate (11).

6. The sharpener structure of claim 5 wherein: a cutting material collecting box (12) is inserted in the inner cavity of the shell below the opening cover plate, and the side wall of the cutting material collecting box (12) covers the front side wall opening of the shell (1) below the opening cover plate.

7. The sharpener structure of claim 5 wherein: the clamping mechanism comprises a push rod (71), a chuck (7), clamping jaws (72) and a reset mechanism of the chuck (7), the chuck (7) can be rotatably connected to a clamping plate (6), the chuck (7) is rotatably connected with one end of the push rod (71), the push rod (71) is movably connected with the clamping plate (6), the other end of the push rod (71) extends out of the side wall of the clamping plate (6), chuck through holes capable of penetrating through a pencil (4) are formed in the chuck (7), the clamping jaws (72) are distributed on the clamping plate (6) around the chuck through holes, the clamping jaws (72) are rotatably connected with the clamping plate (6), the clamping jaws (72) are rotatably connected with the chuck (7), the chuck (7) is connected with the clamping plate (6) through the reset mechanism, when one end of the push rod (71) is pushed, the chuck (7) rotates to push the clamping jaws (72) to draw towards one side of the through holes, when the push rod (71) is loosened, the reset mechanism enables the chuck (7) to rotate reversely to push the jaws (72) to disperse towards one side far away from the through hole of the chuck, the reset mechanism is an elastic rod (73), one end of the elastic rod (73) is connected with the chuck (7), and the other end of the elastic rod (73) is connected with the clamping plate (6).

8. The sharpener structure of claim 7 wherein: and the side wall of the claw (72) is provided with a claw bulge (721) capable of increasing the friction force between the claw (72) and the pencil (4).

9. The sharpener structure of any one of claims 1-4 wherein: the cutting part comprises a sleeve (8) which is arranged at the front part of the rocking handle (2) and can be sleeved with the head part of the pencil (4), a roller cutter (81) which is arranged at one side of the sleeve (8) and can rotate relative to the sleeve (8), and a driving mechanism which can drive the roller cutter (81) to rotate relative to the sleeve (8), wherein the roller cutter (81) is connected with the rocking handle (2) through the driving mechanism, one side of the sleeve (8) is provided with a side wall opening, and a cutter body of the roller cutter (81) extends into the side wall opening and can cut the head part of the pencil (4).

10. The sharpener structure of claim 9 wherein: the driving mechanism is an internal gear (22) connected to the rocking handle (2), the roller cutter (81) is sleeved on a roller shaft on one side of the sleeve (8), a roller transmission gear (82) is arranged at the end part of the roller cutter (81), and the roller transmission gear (82) is meshed with the internal gear (22).