Adjustment assembly for electric pencil sharpener

Abstract

The invention discloses an adjustment component of an electric pencil sharpener, comprising a pencil-blocking block arranged below a pencil storage bin, and an adjustment knob arranged in the lower bottom surface of the pencil sharpener and movable up and down, wherein the pencil-blocking block comprises blocks of different heights distributed outside a shaft, the pencil-blocking block is engaged with a transmission rod, and the adjustment knob is moved up and down to control the engagement or rotatable connection with the transmission rod. A new adjustment structure is designed to meet different user needs, and the overall appearance is more uniform.

Description

Technical Field

[0001] The invention relates to an adjusting mechanism used in a pencil sharpener, in particular to an adjusting component of an electric pencil sharpener. Background Art

[0002] The electric pencil sharpener has a motor installed on the rotating shaft of the tool. The motor drives the tool to rotate and automatically completes the function of cutting pencils. The electric pencil sharpener uses a motor to replace manual operation, making pencil sharpening more convenient. In the process of drawing drawings and writing texts, pencils with different thicknesses of nibs are required due to personal habits and prescribed standard requirements. Therefore, the existing electric pencil sharpener adds an adjustment component to adjust the thickness of the nib obtained by cutting.

[0003] In 2018, our company designed a pencil sharpener with adjustable pen tip thickness, and submitted a patent application to the State Intellectual Property Office. The application (patent) number of "Pen Tip Thickness Adjustment Mechanism of Pencil Sharpener" is: CN201820973999.1. The pencil sharpener of the above structure adopts an adjustment wheel set on the side of the pencil sharpener. The user moves the gear slider by turning the adjustment wheel to change the position of the connection between the adjustment surface and the pen block. The up and down movement of the pen block enables the pen tip to be adjusted from thick to thin, from thin to thick, and in multiple gears. However, in subsequent research and development, our engineers believed that this adjustment method of the side adjustment wheel is not the optimal solution for the adjustment method of the electric pencil sharpener. That is, the inventor of the present invention designed a new adjustment structure and adjustment method. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an adjustment component of an electric pencil sharpener, design a new adjustment structure to meet different user needs, and make the overall appearance more uniform.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: an adjustment component of an electric pencil sharpener includes a pencil blocking block arranged below a pencil container, and an adjustment knob arranged on the bottom surface of the pencil sharpener and movable up and down, wherein the pencil blocking block includes blocks of different heights distributed outside the shaft, the pencil blocking block is engaged with a transmission rod, and the adjustment knob moves up and down to control it to engage with the transmission rod or be rotatably connected.

[0006] A further preferred solution of the present invention is that the lower bottom surface of the pencil sharpener is provided with an inwardly sunken groove, and the adjusting knob is axially movably installed in the groove.

[0007] A further preferred solution of the present invention is that the upper end of the adjusting knob passes through the bottom surface of the groove, and the top surface of the adjusting knob is provided with a mounting groove for mounting the transmission rod.

[0008] A further preferred embodiment of the present invention is as follows: gear teeth 1 are arranged on the top surface of the adjusting knob and the outer periphery of the mounting groove, a circle of gear teeth 2 is correspondingly arranged on the bottom of the transmission rod, and a columnar structure extends downward from the bottom surface of the transmission rod and below gear teeth 2, the lower part of the columnar structure extends into the mounting groove, and there is a spacing between gear teeth 2 and gear teeth 1.

[0009] A further preferred embodiment of the present invention is as follows: the adjusting knob is an inverted T-shaped structure, including a chassis and an upper support rod, the mounting groove is arranged on the top surface of the upper support rod, and the adjusting knob can be forced to move upward so that gear one engages with gear two. At this time, the rotation of the adjusting knob can drive the pen blocking block to rotate through the transmission rod.

[0010] A further preferred embodiment of the present invention is as follows: the chassis is connected to the groove through a spring in a compressed state, the upper end of the upper support rod passes through the chassis, a fastener is provided on the upper end of the upper support rod, the fastener locks the upper end of the upper support rod above the chassis, and when the adjusting knob is not subjected to force, the spring drives it to return to its initial state.

[0011] A further preferred embodiment of the present invention is as follows: the pen blocking block is installed on a tool holder, the tool holder includes a base, a circular slot is provided on the surface of the base, the lower part of the shaft of the pen blocking block is a column installed in the slot, the block is located above the column, and a plurality of blocks are arranged staggered with each other.

[0012] A further preferred solution of the present invention is that a plurality of card slots are distributed on the periphery of the column, and elastic card members are correspondingly arranged on the tool holder, and the rotation of the pen blocking block will cause the card members to be embedded in different card slots, and correspondingly different blocks will rotate to the bottom of the pen storage bin.

[0013] A further preferred solution of the present invention is that the outer surface of the upper end of the transmission rod is provided with gear teeth three, and the lower end of the shaft member and below the column are provided with gear teeth four that mesh with gear teeth three.

[0014] A further preferred solution of the present invention is as follows: an inclined outlet hole is provided inside the tool holder, and the outlet hole is located below the column.

[0015] Compared with the prior art, the advantage of the present invention is that blocks of different heights are arranged on the pencil block, and blocks of different heights can be rotated so that blocks of different heights are located below the pencil container, and blocks of different heights act on the pen tip to control the thickness of the pencil sharpening. Then, by setting the transmission rod, the adjustment knob can be set to the bottom of the entire pencil sharpener, which is a new adjustment method that can meet the needs of some users. Moreover, the outer peripheral surface of the pencil sharpener is complete, without any adjustment keys, and the overall appearance is more uniform.

[0016] In the pencil sharpener type involved in the present invention, when the tool is working, the entire tool holder rotates, and naturally the pencil blocking block installed on the tool holder will also rotate accordingly, and then the transmission rod meshing with the pencil blocking block will also rotate accordingly. In order to prevent the adjustment knob from rotating, the present invention arranges the adjustment knob to move up and down to control its meshing or rotatable connection with the transmission rod. The non-meshing state is a rotatably connected state, and the rotation of the transmission rod does not affect the adjustment knob. When the pencil sharpener is not in working state, the adjustment knob is driven to move so that it meshes with the transmission rod. At this time, the rotating transmission rod drives the pencil blocking block to rotate through the transmission rod to achieve adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0018] Figure 1 is a schematic diagram of the structure of the pencil sharpener 3;

[0019] Figure 2 It is a structural schematic diagram of the present invention;

[0020] Figure 3 is a cross-sectional view of the present invention;

[0021] Figure 4 This is a schematic diagram of the exploded structure of the tool holder. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0023] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] like Figures 1 to 4 As shown: the adjustment component of the electric pencil sharpener includes a pencil blocking block 2 arranged below the pencil storage bin 1, and an adjustment knob 4 arranged on the bottom surface of the pencil sharpener 3 and movable up and down. The pencil blocking block 2 includes blocks 2b of different heights distributed outside the shaft 2a. The pencil blocking block 2 is engaged with the transmission rod 5. The adjustment knob 4 is moved up and down to control it to be engaged with the transmission rod 5 or rotatably connected.

[0025] The lower bottom surface of the pencil sharpener 3 is provided with an inwardly sunken groove 6, and the adjusting knob 4 is axially movable and installed in the groove 6. The structural setting of the groove 6 stores the adjusting knob 4 in the pencil sharpener 3, and the phenomenon of accidental touching will not occur.

[0026] The upper end of the adjusting knob 4 passes through the bottom surface of the groove 6, and the top surface of the adjusting knob 4 is provided with a mounting groove for mounting the transmission rod 5. The mounting groove limits the bottom of the transmission rod 5.

[0027] The top surface of the adjusting knob 4 and the outer periphery of the mounting groove are provided with gear teeth 1 7, and the bottom of the transmission rod 5 is correspondingly provided with a circle of gear teeth 2 8, and a columnar structure extends downward from the bottom surface of the transmission rod 5 and below the gear teeth 2 8, and the lower part of the columnar structure extends into the mounting groove, and there is a gap between the gear teeth 2 8 and the gear teeth 1 7. This is the non-working state of the adjusting knob 4, that is, the adjusting knob 4 and the transmission rod 5 are rotatably connected.

[0028] The adjusting knob 4 is an inverted T-shaped structure, including a chassis 4b and an upper support rod 4a, which is a preferred structure of the adjusting knob 4 of the present invention. Of course, adjusting knobs 4 of other structures can also be used. The mounting groove is set on the top surface of the upper support rod 4a. The adjusting knob 4 can be forced to move upward to make the gear 1 7 mesh with the gear 2 8. At this time, the rotation of the adjusting knob 4 can drive the pen block 2 to rotate through the transmission rod 5. This is the working state of the adjusting rotation. The adjusting knob 4 is meshed with the transmission rod 5, and the rotation of the adjusting knob 4 will drive the pen block 2 to rotate.

[0029] The chassis 4b is connected to the groove 6 through a spring in a compressed state, the upper end of the upper support rod 4a passes through the chassis 4b, and a buckle is provided on the upper end of the upper support rod 4a. The buckle locks the upper end of the upper support rod 4a above the chassis 4b. When the adjusting knob 4 is not subjected to force, the spring drives it to return to its initial state. That is, when the adjusting knob 4 is not in a working state, the adjusting knob 4 cannot move downward due to the action of the buckle, but can move upward. The present invention limits the limit state of the adjusting knob 4 through the buckle.

[0030] The pencil blocking block 2 is installed on the tool holder 9. The tool holder 9 includes a base 14. A circular notch 10 is provided on the surface of the base 14. The lower part of the shaft 2a of the pencil blocking block 2 is a column 2c installed in the notch 10. The block 2b is located above the column 2c. The multiple blocks 2b are arranged staggered with each other. The present invention sets the column 2c to be installed in the notch 10. The notch 10 on one side is a limit to the movement of the column to ensure that the pencil blocking block 2 can only rotate around the axis and cannot move in other directions. Secondly, it can prevent the dust after pencil shaving from falling to the bottom through the notch 10 and affecting the work of the gear teeth.

[0031] There are several slots 12 distributed on the periphery of the column 2c, and elastic clips 11 are correspondingly arranged on the tool holder 9. The rotation of the pen-blocking block 2 will cause the clips 11 to be embedded in different slots 12, and the corresponding blocks 2b to rotate to the bottom of the pen storage compartment 1. The user can judge that the pen-blocking block 2 has moved into place by the resistance after the clips 11 are inserted into the slots 12, which is convenient for the user to adjust.

[0032] The outer surface of the upper end of the transmission rod 5 is provided with gear teeth 3, and the lower end of the shaft 2a and the lower part of the column 2c are provided with gear teeth 4 meshing with the gear 3. An inclined outlet hole 13 is provided inside the tool holder 9, and the outlet hole 13 is located below the column 2c. The outlet hole 13 is provided in the present invention to guide out the dust falling from the notch 10. When the tool holder 9 rotates during operation, the dust can be guided out through the outlet hole 13 to avoid affecting the transmission parts inside the pencil sharpener 3.

[0033] The transmission rod of the present invention is an outer rotatable sleeve with a kit, which connects the motor and the base of the tool holder. The motor drives the tool holder to rotate. A roller (not shown) is installed on the tool holder, and the roller rotates around the pencil at high speed, thereby realizing the sharpening of the pencil. Then at this time, the pencil blocking block installed on the tool holder will rotate synchronously with the tool holder, that is, the transmission rod engaged with the pencil blocking block is also rotating. For this reason, the present invention sets the adjustment knob, which needs to be pushed up to achieve engagement with the transmission rod and control the rotation of the transmission rod. Of course, the pencil sharpener should not be working at this time, that is, the transmission rod is in a non-rotating state. When the adjustment knob is not pushed up, the transmission rod and the adjustment knob are in a rotatable state, and the rotation of the transmission rod does not affect the adjustment knob.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The present invention is described in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the present invention and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An adjustment assembly for an electric pencil sharpener, characterized in that It includes a pencil-blocking block arranged below the pencil storage bin, and an adjusting knob arranged inside the bottom surface of the pencil sharpener and movable up and down, wherein the pencil-blocking block includes a plurality of blocks of different heights distributed outside the shaft, and the plurality of blocks are arranged staggered with each other, and the pencil-blocking block is meshed with the transmission rod, and the adjusting knob is moved up and down to control the meshing or rotatable connection with the transmission rod; The top surface of the adjusting knob is provided with gear teeth 1, and the bottom of the transmission rod is correspondingly provided with a circle of gear teeth 2. There is a gap between gear teeth 2 and gear teeth 1. At this time, the adjusting knob is rotatably connected to the transmission rod; the adjusting knob can move upward under force to make gear teeth 1 mesh with gear teeth 2. At this time, the rotation of the adjusting knob can drive the pen blocking block to rotate through the transmission rod.

2. The adjustment assembly of the electric pencil sharpener according to claim 1, characterized in that The lower surface of the pencil sharpener is provided with an inwardly sunken groove, and the regulating knob is axially movably installed in the groove.

3. The adjustment assembly of the electric pencil sharpener according to claim 2, characterized in that The upper end of the adjusting knob passes through the bottom surface of the groove, and the top surface of the adjusting knob is provided with a mounting groove for mounting the transmission rod.

4. The adjustment assembly of the electric pencil sharpener according to claim 3, characterized in that The top surface of the adjusting knob and the periphery of the mounting groove are provided with gear teeth one, and the bottom surface of the transmission rod and the lower part of the gear teeth two further extend downwardly from a columnar structure, and the lower part of the columnar structure extends into the mounting groove.

5. The adjustment assembly of the electric pencil sharpener according to claim 4, characterized in that The adjusting knob is an inverted T-shaped structure, comprising a chassis and an upper support rod, and the mounting groove is arranged on the top surface of the upper support rod.

6. The adjustment assembly of the electric pencil sharpener according to claim 5, characterized in that The chassis is connected to the groove through a spring in a compressed state, the upper end of the upper support rod passes through the chassis, and a buckle is provided on the upper end of the upper support rod, which locks the upper end of the upper support rod above the chassis. When the adjusting knob is not subjected to force, the spring drives it to return to its initial state.

7. The adjustment assembly of the electric pencil sharpener according to claim 1, characterized in that The pen-blocking block is installed on the tool holder, which includes a base. A circular notch is provided on the surface of the base. The lower part of the shaft of the pen-blocking block is a column installed in the notch, and the block is located above the column.

8. The adjustment assembly of the electric pencil sharpener according to claim 7, characterized in that A plurality of card slots are distributed on the periphery of the column, and elastic card pieces are correspondingly arranged on the tool holder. The rotation of the pen-blocking block will cause the card pieces to be embedded in different card slots, and corresponding blocks will rotate to the bottom of the pen storage bin.

9. The adjustment assembly of the electric pencil sharpener according to claim 7, characterized in that The outer surface of the upper end of the transmission rod is provided with gear teeth three, and the lower end of the shaft member and below the column are provided with gear teeth four meshing with gear teeth three.

10. The adjustment assembly of the electric pencil sharpener according to claim 7, characterized in that An inclined outlet hole is provided inside the tool holder, and the outlet hole is located below the column.

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