CN105667157B - Hand-cranking type pencil sharpener - Google Patents

Abstract

The invention relates to a hand-operated pencil sharpener, comprising a pen fixing module for fixing the pen to a preset position; a pencil sharpening module for cutting the pen; and a pencil sharpener for the hand-operated pencil sharpener A power module that provides power and a housing for supporting the hand-operated pencil sharpener; the pen tool fixing module is arranged on both sides of the housing opposite to the power module, and the pencil sharpening module is located at Inside the housing, one end of the pencil sharpening module is connected to the pen fixing module, and the other end is connected to the power module. The invention is energy-saving and environment-friendly, and is convenient to carry. Compared with the traditional hand-operated pencil sharpener, the utility model has a long service life, is not easy to break the core, and is more labor-saving.

Description

Hand Pencil Sharpener

technical field

The invention relates to an art stationery, in particular to a hand-cranked pencil sharpener.

Background technique

In the prior art, there are two kinds of pencil sharpeners: electric type and hand-operated type. The electric type pencil sharpener is driven by a motor to automatically sharpen the pencil, which is convenient to use. However, the traditional electric pencil sharpener waste battery is not energy-saving and environmentally friendly. When the power is insufficient or there is no external power supply, it cannot be used, and it is not conducive to improving children's hands-on ability; the traditional hand-cranked pencil sharpener is manually sharpened by a manual rotating pencil, and the pencil sharpener is easy to shake during the sharpening process, and the The pen tool is easy to be off-center during the writing process, which may cause core breakage and damage to the blade. In addition, the traditional hand-operated pencil sharpener is laborious during use, and the blade is damaged and should not be disassembled and replaced.

Contents of the invention

In view of this, the object of the present invention is to overcome the deficiencies of the prior art and provide a hand-cranked pencil sharpener that is not prone to broken cores and has a long service life.

To achieve the above object, the present invention adopts the following technical solutions:

A hand-operated pencil sharpener, comprising a pen tool fixing module for fixing the pen tool to a preset position, a pencil sharpening module for cutting the pen tool, and a power supply for the hand-operated pencil sharpener A power module and a housing for supporting the hand-operated pencil sharpener; the pencil sharpening module is located inside the housing, and the pen tool fixing module is arranged on the housing opposite to the power module On both sides, one end of the pencil sharpening module is connected to the pen fixing module, and the other end is connected to the power module;

The pen fixing module includes a main cover, a movable cover, a claw plate, a clamp rotating plate and a control key; the main cover and the movable cover are combined to form an accommodation cavity, The movable cover plate is provided with a pen inlet hole, and the inner surface of the movable cover plate is provided with a circlip fixing protrusion and more than three positioning protrusions arranged at equal intervals along the circumference of the pen inlet hole;

The clamp rotating plate is provided with a through hole corresponding to the pen inlet hole and a positioning groove corresponding to the positioning protrusion one by one, and the clamp rotating plate is sleeved on the positioning protrusion through the positioning groove. , the claw plates are connected to the clamp rotating plate through the positioning protrusions in one-to-one correspondence;

The edge of the rotating plate of the clamp is also provided with a button groove, and the bottom end of the control key is engaged in the groove of the button. The protrusion slides, and the claw disc bites or loosens the pen tool through the sliding of the clamp rotating plate.

The inner surface of the movable cover is also provided with a retaining spring that prevents the axial movement of the rotating plate of the clamp, and the inner surface of the movable cover is provided with a retaining protrusion, and the rotating plate of the clamp corresponds to the clamping spring. The spring fixing protrusion is provided with a shaft groove, and the jumper is installed in the shaft groove through the jumper fixing protrusion.

The pencil sharpening module includes a tool holder, a helical milling cutter, a helical milling cutter shaft and a deceleration and labor-saving device. The two ends of the tool holder are respectively connected with the pen fixing module and the power module. There is a conical planing cavity for inserting pens, the conical planing cavity is coaxial with the pen inlet hole, and the helical milling cutter axis is arranged obliquely on one side of the conical planing cavity On the tool holder, the helical milling cutter is installed on the tool holder through the helical milling cutter shaft, and the bottom end of the helical milling cutter shaft passes through the tool holder to connect with the deceleration and labor-saving device; the deceleration and labor-saving The device is an internal gear, and the internal gear includes an internal gear and an external gear, the internal gear is fixedly connected to the shaft of the helical milling cutter, the external gear is connected to the power module, and the power module is a crank , the crank includes a handle, a hand wheel and a fixed pin, the hand wheel is connected to the handle through the fixed pin, the other end of the handle is connected to the external gear, and the power module is connected to the external gear through the The labor-saving device rotates in a labor-saving manner and transmits it to the pencil-cutting module for pencil-cutting.

The casing includes a casing and a storage box matched with the casing, and the storage box is located under the pencil sharpening module for storing pen scraps.

The shell material is one of ABS, PP or PC plastic materials.

The material holding box is made of transparent plastic material.

The bottom end of the housing is provided with a non-slip bottom pad.

After the present invention adopts above technical scheme, produce following beneficial effect:

1. The pen tool fixing module of the present invention engages the bottom end of the control key in the key groove, and the positioning groove on the clamp rotating plate is driven to slide along the positioning protrusion through the up and down movement of the control key, so that the claw plate passes through the clamp rotating plate Sliding to tighten or loosen the pen, cooperate with the sharpening module to fasten the pen, making it easy to sharpen, ensuring that the sharpener is not eccentric during use, and preventing the occurrence of broken cores;

2. The setting of the circlip prevents the axial movement of the rotating plate of the fixture, further stabilizes the performance of the pencil sharpener, and strengthens the occlusal degree of the fixed module of the pen;

3. The conical planing cavity set coaxially with the pen entry hole reduces the shaking caused by the vibration of the pen during the cutting process, and effectively prevents the occurrence of broken cores; at the same time, the deceleration and labor-saving device decelerates the rotation of the power module so that It is transmitted to the tool holder, so that the tool holder equipped with the helical milling cutter can rotate with a large rotational force, even if the user has less strength, he can simply sharpen the pen. At the same time, the number of rotations of the power module is reduced. simplified structure;

4. The present invention adopts the segmental cutting of the spiral cutter head, which is better than the traditional flat cutter head for full-cut cutting. Because the segmental cutting has a small cutting contact area per unit time, the cutting resistance and friction are small, and the resulting The advantage is that the heat generated by cutting is small, the noise is low, the cutting is easy, efficient and durable, the cutting surface is smooth and delicate, the design of the spiral cutter head is more conducive to chip removal and maintenance of the cutter head, and its life span is more than 5000 times;

5. The shell material that mainly supports, contains and protects the internal components is made of ABS, PP or PC plastic materials, which are durable, good in plasticity, high in strength, smooth in surface and not easy to deform;

6. The material box in the present invention is made of transparent plastic material, which is convenient for observing the working state of the pencil sharpener and dumping pen scraps at any time, which is beneficial to protect the blade from damage;

7. The present invention adopts a horizontal body shape, and an anti-skid bottom pad is provided on the lower part of the casing, so that the hand-operated pencil sharpener can be placed more stably.

To sum up, the present invention is energy-saving, environment-friendly, and easy to carry. Compared with the traditional hand-operated pencil sharpener, it has a long service life, is not easy to break the core, and is more labor-saving.

Description of drawings

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

Partial assembly schematic diagram of the pen tool fixing device in Fig. 2 of the present invention;

Fig. 3 is a schematic diagram of the assembly of the pencil sharpening module and the power module in the present invention.

In the figure: 1, pen fixing module; 11, movable cover plate; 111, circlip fixing protrusion; 112, positioning protrusion; 12, clamp rotating plate; 121, control key; 122, through hole; 123, claw plate ; 124, circlip; 125, positioning groove; 13, main cover plate; 14, pen inlet hole; 2, pen cutting module; 21, knife holder; 22, spiral milling cutter; Gear; 25, conical planing cavity; 26, external gear; 3, power module; 31, fixed pin; 32, hand wheel; 33, handle; 4, shell; 41, casing; 42, material box.

detailed description

The technical solution of the present invention will be described in further detail below with reference to the drawings and embodiments.

As shown in Fig. 1 and Fig. 2, the present invention provides a hand-cranked pencil sharpener, comprising a pencil fixing module 1 for fixing the pencil to a preset position; Module 2; a power module 3 for powering the hand-operated pencil sharpener and a housing 4 for supporting the hand-operated pencil sharpener; wherein the pencil sharpening module 2 is located inside the housing 4, and the pen fixing module 1. It is arranged on both sides of the housing 4 opposite to the power module 3. One end of the pencil sharpening module 2 is connected to the pen fixing module 1, and the other end is connected to the power module 3; the pen fixing module 1 includes a movable cover plate 11, a clamp rotating plate 12. Control key 121, claw plate 123 and main cover 13; the main cover 13 and the movable cover 11 are covered to form an accommodation cavity, and a pen entry hole 14 is provided through the main cover 13 and the movable cover 11, and the movable cover The inner surface of the plate 11 is provided with a snap ring fixing protrusion 111 and more than three positioning protrusions 112 arranged at equal intervals along the circumference of the pen inlet hole 14; The through hole 122 and the positioning groove 125 corresponding to the positioning protrusion 112 one-to-one, the fixture rotating plate 12 is sleeved on the positioning protrusion 112 through the positioning groove 125, and the claw plate 123 is connected to the fixture rotating through the positioning protrusion 112 one-to-one. On the plate 12; the edge of the fixture rotating plate 12 is also provided with a key groove (the key groove is not marked in the figure), the bottom end of the control key 121 is engaged in the key groove, and the control key 121 drives the fixture rotating plate 12 by moving up and down. The positioning groove 125 slides along the positioning protrusion 112, and the claw plate 123 bites or loosens the pen tool through the sliding of the clamp rotating plate 12.

Further: the inner surface of the movable cover 11 is provided with a clip spring 124 that prevents the axial movement of the clamp rotating plate 12, the inner surface of the movable cover 11 is provided with a clip spring fixing protrusion 111, and the corresponding clip on the clamp rotating plate 12 The spring fixing protrusion 111 is provided with a shaft groove (the shaft groove is not marked in the figure), and the jumper 124 is installed in the shaft groove through the jumper fixing protrusion 111 .

The present invention is fastened by occlusal, convenient for sharpening pencils, ensures that the pencil sharpener is not eccentric during use, and prevents core breakage, and most parts are assembled together through bayonet sockets, such as the main cover plate and movable The assembly between the cover plates can make the hand-operated pencil sharpener disassembled without being damaged.

As shown in Figure 1 and Figure 3, as an optional embodiment, the pencil sharpening module includes a knife rest 21, a helical milling cutter 22, a helical milling cutter shaft 23 and a deceleration and labor-saving device, and the two ends of the knife rest 21 are respectively fixed with the pen tool The module 1 is connected to the power module 3, and the tool holder 21 is axially provided with a conical planing cavity 25 for inserting pens. The conical planing cavity 25 is coaxial with the pen inlet hole 14, and the helical milling cutter shaft 23 is inclined. On the tool rest 21 that is positioned at one side of the tapered planing cavity 25, the helical milling cutter 22 is installed on the tool rest 21 by the helical milling cutter shaft 23, and the bottom end of the helical milling cutter shaft 23 passes through the tool rest 21 and the deceleration and labor-saving device Connection; the deceleration and labor-saving device is an internal gear, and the internal gear includes an internal gear 24 and an external gear 26, the internal gear 24 is fixedly connected with the helical milling cutter shaft 23, the external gear 26 is connected with the power module 3, and the power module 3 is a crank handle. The crank includes a handle 33, a hand wheel 32 and a fixed pin 31. The hand wheel 32 is connected to the handle 33 through the fixed pin 31, and the other end of the handle 33 is connected to the external gear 26. Pen module 2 performs sharpening.

A conical planing cavity 25 coaxial with the pen entry hole is set on the pen cutting module, which reduces the shaking caused by the vibration of the pen during the cutting process, and effectively prevents the occurrence of broken cores; at the same time, the deceleration and labor-saving device makes the power The deceleration of the module rotation is transmitted to the tool holder 21, so that the tool holder 21 equipped with the helical milling cutter 22 can rotate with a large rotational force, which reduces the number of rotations of the power module 2 and simplifies the structure. It is also easy to sharpen the pen while using it;

The casing 4 includes a casing 41 and a material storage box 42 matching the casing 41 , the storage box 42 is located under the pencil sharpening module 2 for storing pen scraps.

In order to make the shell 4, which mainly plays the role of supporting, containing and protecting the internal parts, durable and high in strength, the material of the shell is selected as one of ABS, PP or PC plastic raw materials.

In order to observe the working state of the pencil sharpener at any time and clean up the pen shavings to protect the blade, the material holding box 42 is made of transparent plastic material.

In order to make the pencil sharpener put more stably, the present invention adopts the horizontal body shape, and the anti-slip bottom pad is set at the bottom of the housing 4 (the non-slip bottom pad is not marked in the figure).

How to use: press the control key 121, insert the pen into the pen hole 14, the pen holder is clamped by the three claw plates 123, the pen tip is inserted into the conical planing cavity 25 on the knife holder 21, and the handle 33 is turned, The tool holder 21 rotates around the axis. At this time, the internal gear 24 rotates under the action of the external gear 26. The helical milling cutter 22 fixedly connected with the internal gear 24 rotates on its own on the one hand and rotates around the axis of the tool holder 21 on the other hand. Two kinds of motions make the helical milling cutter 22 constantly rotate around the nib to cut wood, and when cutting to idling, it means that the pencil has been sharpened.

The present invention is not limited to the above-mentioned best implementation mode, and any person skilled in the art can draw other various forms of products under the enlightenment of the present invention, but no matter make any changes on its shape or structure, all have The same or similar technical solutions all fall within the protection scope of the present invention.

Claims (7)

1. a kind of hand-operated pencil sharpener, it is characterised in that include for pen tool to be fixed to the pen tool stuck-module of predeterminated position (1), for cut pen tool cut pen module (2), the power plant module (3) for power is provided for hand-operated pencil sharpener and For supporting the housing (4) of the hand-operated pencil sharpener；The pen module (2) of cutting is internal positioned at the housing (4), the pen tool Stuck-module (1) both sides that are arranged on the housing (4) relative with the power plant module (3), it is described to cut the one of pen module (2) End connection pen tool stuck-module (1), the other end connect the power plant module (3)；

Pen tool stuck-module (1) is including removable cover (11), fixture rotor plate (12), control key (121), pawl disk (123) And main cover plate (13)；The main cover plate (13) covers to form accommodating cavity with the removable cover (11), through the main cover Plate (13) is provided with pen-laying hole (14) with the removable cover (11), and removable cover (11) inner surface is provided with jump ring and fixes The positioning convex (112) of raised (111) and more than three along the pen-laying hole (14) circumference spaced set；

Offer on the fixture rotor plate (12) through hole (122) corresponding with the pen-laying hole (14) and with the convex (112) locating slot (125) correspondingly are played, the fixture rotor plate (12) is socketed in described by the locating slot (125) On positioning convex (112), the pawl disk (123) is connected to the fixture by the positioning convex (112) correspondingly and turns On dynamic plate (12)；

The edge of the fixture rotor plate (12) is additionally provided with key slot, and the bottom of the control key (121) is fastened on the button In groove, the control key (121) is by the up and down locating slot (125) driven on the fixture rotor plate (12) along described fixed Position raised (112) is slided, and the pawl disk (123) is stung tight by the slip of the fixture rotor plate (12) or unclamps pen tool.

2. hand-operated pencil sharpener according to claim 1, it is characterised in that also set on removable cover (11) inner surface There is the jump ring (124) for preventing the fixture rotor plate (12) axially-movable, removable cover (11) inner surface is provided with jump ring Fixed lobe (111), on the fixture rotor plate (12), the correspondence jump ring fixed lobe (111) is provided with axial trough, the jump ring (124) by the jump ring fixed lobe (111) in the axial trough.

3. hand-operated pencil sharpener according to claim 1, it is characterised in that it is described cut pen module (2) including knife rest (21), Screw-on cutter (22), helical milling cutter shaft (23) and deceleration work-saving device, the two ends of the knife rest (21) are solid with pen tool respectively Cover half block (1) and the power plant module (3) connection, are axially arranged with the knife rest (21) for inserting the taper planing chamber that pen has (25), taper planing chamber (25) is coaxial with the pen-laying hole (14), and the helical milling cutter shaft (23) is obliquely arranged in place On the knife rest (21) that chamber (25) side is planed in the taper, the screw-on cutter (22) is pacified by the helical milling cutter shaft (23) It is mounted on the knife rest (21), the bottom of the helical milling cutter shaft (23) is connected through knife rest (21) with the deceleration work-saving device Connect；The deceleration work-saving device is inside engaged gear, and the inside engaged gear includes internal gear (24) and external gear (26), described Internal gear (24) is affixed with the helical milling cutter shaft (23), and the external gear (26) is connected with the power plant module (3), described dynamic Power module (3) is by the laborsaving rotation of the deceleration work-saving device and conducts to the pen module (2) of cutting and carries out cutting pen.

4. hand-operated pencil sharpener according to claim 1, it is characterised in that the housing (4) including casing (41) and with The charge box (42) that the casing (41) matches, the charge box (42) are cut below pen module (2) for depositing positioned at described Pen bits.

5. hand-operated pencil sharpener according to claim 4, it is characterised in that housing (4) material is ABS, PP or PC One kind in plastic material.

6. hand-operated pencil sharpener according to claim 4, it is characterised in that the charge box (42) is perspex material Matter.

7. hand-operated pencil sharpener according to claim 4, it is characterised in that the bottom of the housing (4) is provided with anti-skidding bottom Pad.