Single-hole pencil sharpener

Abstract

The utility model relates to the technical field of pencil sharpeners, in particular to a single-hole pencil sharpener which comprises a barrel, a closed first interlayer and an openable second interlayer are arranged in the barrel, an upper cover used for opening the second interlayer is arranged on the first interlayer and the second interlayer, an independent third interlayer is arranged in the first interlayer, and a second interlayer is arranged in the second interlayer. A driving assembly is assembled in the first interlayer, a pencil sharpening assembly is arranged at the lower end of the upper cover and located in the second interlayer, and a gear set is assembled in the third interlayer, connected between the driving assembly and the pencil sharpening assembly and used for driving the pencil sharpening assembly to rotate. The pencil sharpener is simple in structure, the interior of the pencil sharpener is mainly divided into the closed first partition layer and the openable second partition layer, and therefore it is guaranteed that the driving assembly and the battery assembly are located in the same area, the pencil sharpening assembly is located in the other openable second partition layer, and after pencil sharpening is completed, chippings, left in the second partition layers, of pencils can be cleaned by opening the upper cover.

Description

Technical Field

[0001] This utility model relates to the field of pencil sharpener technology, and in particular to a single-hole pencil sharpener. Background Technology

[0002] A pencil sharpener (also called a pencil trimmer) is a tool used to sharpen pencils. Its basic function is to remove the wooden outer shell of the pencil, exposing the lead, so that it can be used for writing or drawing. Pencil sharpeners come in two common forms: manual and automatic.

[0003] With the increasing demand from society, existing pencil sharpeners are gradually moving towards automatic models to improve speed and efficiency. However, automatic pencil sharpeners still have room for improvement: (1) the structure of existing automatic pencil sharpeners is too complex, with all the scattered parts being housed in one chamber; (2) due to the fixed internal assembly, it is impossible to effectively clean up the debris after sharpening; and (3) the sharpening part is difficult to replace, which leads to a gradual decline in the sharpening effect after long-term use. Utility Model Content

[0004] In order to overcome the shortcomings of the above-mentioned situation, this utility model aims to provide a technical solution that can solve the above problems.

[0005] A single-hole pencil sharpener includes a cylindrical body with a closed first compartment and an openable second compartment inside. Both the first and second compartments have a cover for opening the second compartment. The first compartment is divided into an independent third compartment. A drive assembly is assembled within the first compartment. A pencil-sharpening assembly is located below the cover in the second compartment. A gear set is assembled in the third compartment, connecting the drive assembly and the pencil-sharpening assembly, and is used to drive the pencil-sharpening assembly to rotate. The cover has an insertion hole through which a pencil can be inserted into the pencil-sharpening assembly. The pencil-sharpening assembly includes a blade holder, which includes a frame containing an inverted conical hole. A blade is located on the sidewall of the inverted conical hole, with a gap between the blade and the sidewall. An assembly plate is located at the upper end of the blade holder, and a slider extends from the outer side of the assembly plate. An annular track is located at the lower end of the cover, and the slider is positioned within the annular track and can slide in annular motion.

[0006] Furthermore, the frame includes connecting columns on the left and right sides. The upper end of the connecting column is connected to the assembly plate, and the lower end of the connecting column is provided with a rotating shaft connected to the gear set. The lower end of the rotating shaft is provided with a positioning groove, and a positioning block is provided between the gear set and the rotating shaft. The positioning block and the positioning groove can be engaged.

[0007] Furthermore, the third partition is located below the first and second partitions, and the drive shaft of the drive assembly extends downward from the third partition into the third partition and is connected to the gear set for transmission.

[0008] Furthermore, the first compartment also includes a battery compartment, and the bottom of the cylinder has an opening that communicates with the outside, and the opening is connected to the battery compartment.

[0009] Furthermore, the first compartment is provided with a positioning part for assembling the drive assembly, and an assembly edge for assembling the blade is provided between the side wall of the inverted conical hole and the side wall connecting column, and the assembly edge is provided with screw holes.

[0010] Furthermore, the top cover is assembled with the first and second partitions using a sliding snap fastener.

[0011] The beneficial effects of this utility model are:

[0012] (1) The structure is simple. The main internal partitions are a closed first compartment and an openable second compartment, which ensures that the drive component and the battery component are in the same area, while the pencil sharpening component is in another openable second compartment. After the pencil sharpening is completed, the pencil debris left in the second compartment can be cleaned by opening the top cover.

[0013] (2) It also includes an independent third partition in the first partition, and under the action of the drive component installed in its positioning part, the positioning stability of the cylinder is ensured when the drive component is electrically driven.

[0014] (3) It facilitates cleaning the pencil sharpening assembly or replacing the blades after opening the top cover, ensuring the sharpness of the blades.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the assembly structure where the top cover is placed on the first and second partitions.

[0017] Figure 2 A schematic diagram of the assembly structure when the second compartment is opened on the top cover.

[0018] Figure 3 For based on Figure 1 A schematic diagram of the first decomposition structure.

[0019] Figure 4 For based on Figure 1 Schematic diagram of the second decomposition structure.

[0020] Figure 5 This is a schematic diagram of the pen winding assembly at the bottom of the top cover.

[0021] The labels in the attached diagram are as follows: cylinder-1, first partition-2, second partition-3, third partition-4, drive assembly-5, pen winding assembly-6, gear set-7, top cover-8, insertion hole-9, knife holder-10, frame-11, inverted conical hole-12, blade-13, assembly plate-14, slider-15, annular track-16, connecting column-17, rotating shaft-18, positioning groove-19, positioning block-20, battery compartment-21, positioning part-22, assembly edge-23, screw hole-24. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Please see Figures 1-5 This utility model includes a cylindrical body 1, inside which is a closed first partition 2 and an openable second partition 3. A top cover 8 for opening the second partition 3 is provided on the first partition 2 and the second partition 3. The first partition 2 is divided into an independent third partition 4. A drive assembly 5 is assembled inside the first partition 2. A pen-winding assembly 6 is provided at the lower end of the top cover 8, located within the second partition 3. A gear set 7 is assembled inside the third partition 4, connecting the drive assembly 5 and the pen-winding assembly 6, and is used to drive the pen-winding assembly 6 to rotate. The pencil is provided with an insertion hole 9, through which the pencil can be inserted into the pencil sharpening assembly 6; the pencil sharpening assembly 6 includes a blade holder 10, which includes a frame 11, and the frame 11 contains an inverted conical hole 12. The side wall of the inverted conical hole 12 contains a blade 13, and there is a gap between the blade 13 and the side wall of the inverted conical hole 12; the upper end of the blade holder 10 is provided with an assembly plate 14, and a slider 15 extends from the outside of the assembly plate 14. The top of the second partition 3 is provided with an annular channel 16, and the slider 15 is located in the annular channel 16 and can slide in an annular manner.

[0024] The main technology lies in the reasonable spatial distribution within the cylinder 1; specifically, it consists of a first partition 2, a second partition 3, and a third partition 4. The first partition 2 is enclosed: it houses a drive assembly 5, a battery compartment 21, and a positioning part 22, as shown in the figure. The positioning part 22 is used to assemble the drive assembly 5 and prevent excessive vibration of the drive assembly 5 during operation. The bottom of the cylinder 1 has an opening that communicates with the outside. The opening is connected to the battery compartment 21, and the battery can be replaced using the bottom opening, thereby providing power to the drive assembly 5.

[0025] The second partition 3 is located to the side of the first partition 2, with an opening at the top that connects to the outside. The upper cover 8 can be assembled to close the second partition or open the second partition 3. The assembly of the upper cover 8 mainly involves a sliding track at the top of the first partition 2 and the second partition 3 that are spliced ​​together. The sliding track is equipped with a buckle. The lower annular wall of the upper cover 8 is equipped with a snap-fit ​​part that matches the buckle (the snap-fit ​​part has a protrusion inside. Due to the flexibility of the material, the buckle can be put into the snap-fit ​​part when force is applied. At this time, the protrusion is positioned. When force is applied and rotated, the buckle can also be pulled out from the protrusion).

[0026] When the first partition 2, the second partition 3, and the upper cover 8 are assembled to form the cylinder 1, a pen-whipping assembly 6 is provided at the lower end of the upper cover 8. The pen-whipping assembly 6 includes a blade holder 10, which includes a frame 11. The frame 11 contains an inverted conical hole 12, and the side wall of the inverted conical hole 12 contains a blade 13. A gap is left between the blade 13 and the side wall of the inverted conical hole 12. An assembly plate 14 is provided at the upper end of the blade holder 10, and a slider 15 extends from the outer side of the assembly plate 14. An annular track 16 is provided at the lower end of the upper cover 8. The slider 15 is located in the annular track 16 and can slide in annular motion. That is, under the cooperation of the annular track 16 and the slider 15, the blade holder... The component 10 is rotatable and is connected by the drive assembly 5, gear set 7, and pencil sharpening assembly 6. It can sharpen pencils when the pencil is inserted into the pencil holder component 10. The blade 13 of the pencil holder component 10 can be disassembled and replaced. The principle of disassembly and replacement is that the frame 11 includes left and right connecting columns 17. The upper end of the connecting column 17 is connected to the assembly plate 14. An assembly edge 23 for assembling the blade 13 is provided between the side wall of the inverted conical hole 12 and the side wall connecting column 17. The assembly edge 23 is provided with screw holes 24. The blade 13 can be assembled and replaced through the screw holes 24 so that the pencil sharpener can be used for a long time.

[0027] For more reasonable partitioning, the gear set 7 is placed separately in the third partition 4, which is independently set in the first partition 2. The third partition 4 is located at the lower end of the first partition 2 and the second partition 3. The drive shaft of the drive assembly 5 extends from the third partition 4 and enters the third partition 4 to drive the gear set 7.

[0028] To ensure that the gear set 7 can drive the pencil sharpening operation after the upper cover 8 is assembled, a rotating shaft 18 connected to the gear set 7 is provided at the lower end of the connecting column 17. A positioning groove 19 is provided at the lower end of the rotating shaft 18, and a positioning block 20 is provided between the gear set 7 and the rotating shaft 18. The positioning block 20 and the positioning groove 19 can be engaged. Thus, the gear set 7 is ultimately driven by the drive component 5, which sequentially transmits power to the positioning block 20 and the rotating shaft 18, ultimately completing the rotation of the pencil holder 10, thereby sharpening the pencil. The activation of the internal drive component can be achieved through a power switch signal.

[0029] Meanwhile, the sidewall of the second partition 3 can be made transparent, so that the rolling of the blade can be clearly observed.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A single-hole pencil sharpener, comprising a cylindrical body (1), characterized in that: The cylinder (1) has a closed first partition (2) and an openable second partition (3) inside. The first partition (2) and the second partition (3) are provided with a cover (8) for opening the second partition (3). The first partition (2) is divided into an independent third partition (4). The first partition (2) is equipped with a drive assembly (5). The lower end of the cover (8) is provided with a pen-grinding assembly (6). The pen-grinding assembly (6) is located in the second partition (3). The third partition (4) is equipped with a gear set (7). The gear set (7) is connected between the drive assembly (5) and the pen-grinding assembly (6). The gear set (7) is used to drive the pen-grinding assembly (6) to rotate. The top cover (8) is provided with an insertion hole (9), through which a pencil can be inserted into the pencil sharpening assembly (6); The pencil sharpening assembly (6) includes a blade holder (10), which includes a frame (11) containing an inverted conical hole (12). The sidewall of the inverted conical hole (12) contains a blade (13), and there is a gap between the blade (13) and the sidewall of the inverted conical hole (12). The upper end of the tool holder (10) is provided with an assembly plate (14), and a slider (15) extends outward from the assembly plate (14). The lower end of the upper cover (8) is provided with an annular track (16), and the slider (15) is located in the annular track (16) and can slide in an annular manner.

2. The single-hole pencil sharpener according to claim 1, characterized in that: The frame (11) includes connecting columns (17) on the left and right sides. The upper end of the connecting column (17) is connected to the assembly plate (14). The lower end of the connecting column (17) is provided with a rotating shaft (18) connected to the gear set (7). The lower end of the rotating shaft (18) is provided with a positioning groove (19). A positioning block (20) is provided between the gear set (7) and the rotating shaft (18). The positioning block (20) and the positioning groove (19) can be engaged.

3. The single-hole pencil sharpener according to claim 1, characterized in that: The third partition (4) is located at the lower end of the first partition (2) and the second partition (3). The drive shaft of the drive assembly (5) extends from the third partition (4) downward into the third partition (4) and is connected to the gear set (7) for transmission.

4. The single-hole pencil sharpener according to claim 1, characterized in that: The first compartment (2) also contains a battery compartment (21), and the bottom of the cylinder (1) is provided with an opening that communicates with the outside. The opening is connected to the battery compartment (21).

5. The single-hole pencil sharpener according to claim 2, characterized in that: The first partition (2) is provided with a positioning part (22) for assembling the drive assembly (5). An assembly edge (23) for assembling the blade (13) is provided between the side wall of the inverted conical hole (12) and the side wall connecting column (17). The assembly edge (23) is provided with screw holes (24).

6. The single-hole pencil sharpener according to claim 1, characterized in that: The top cover (8) is assembled with the first partition (2) and the second partition (3) by a snap fastener.

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