Split type pencil sharpener
By designing a split pencil sharpener, the shavings collection box is eliminated. Instead, a ring-shaped baffle and a dust baffle are used to seal the shavings, enabling convenient cleaning of the shavings. This solves the problem of the traditional pencil sharpener being too bulky and improves safety and portability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YIWU DINGBANG STATIONERY & SPORTING GOODS
- Filing Date
- 2025-08-26
- Publication Date
- 2026-07-31
AI Technical Summary
Traditional pencil sharpeners are too bulky due to their shaving box design, making them inconvenient to carry and use in confined spaces.
Adopting a split design, the shavings collection box is eliminated. The collection and cleaning of pen shavings are achieved by combining and separating the first and second parts. The pen shavings fall directly into the second housing by using a ring-shaped baffle and a dust baffle plate for double sealing. The pen shavings can be emptied in one go by separating the housing.
The overall size of the pencil sharpener has been reduced, improving safety and convenience of use, lowering production and assembly costs, and meeting the needs for miniaturization and portability.
Smart Images
Figure CN224576400U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a pencil sharpener, and more particularly to a split-type pencil sharpener. Background Technology
[0002] Traditional pencil sharpeners typically consist of two parts: the main body and the chip collection box. The main body includes a housing, as well as a pencil feed assembly and a cutting assembly integrated within the housing. A crank assembly for driving the cutting action is mounted on the rear of the housing. The chip collection box, as a separate component for collecting cutting chips, is designed to be detachable from the housing. Common connection methods include drawer-type plug-in structures or threaded engagement structures, allowing users to periodically disassemble and clean the chips.
[0003] However, this separate chip collection box design has significant drawbacks: to accommodate a certain amount of cutting chips and achieve a stable connection with the casing, the chip collection box needs specific volume and structural strength, which directly increases the overall size of the pencil sharpener. In the face of consumer demand for miniaturization and portability, an excessively large size not only hinders product storage and carrying but also limits its application in confined spaces (such as student pencil cases and office desktops), necessitating structural optimization for improvement. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a split-type pencil sharpener that eliminates the need for a dust collection box.
[0005] The technical solution of this utility model to solve the above-mentioned technical problems is: a split-type pencil sharpener, comprising a first part and a second part that can be combined and separated from each other;
[0006] The first part includes a first housing and a pen feeding assembly disposed within the first housing. The first housing has a front end face with a pen feeding hole and a first peripheral sidewall disposed around the edge of the front end face. The rear end face of the first housing forms an open first opening.
[0007] The second part includes a second housing and a cutting assembly disposed within the second housing. The second housing includes a rear end face on which a crank assembly is mounted and a second peripheral sidewall. The rear end face is provided with a crank assembly that is pulsatorically connected to the cutting assembly. The front end face of the second housing forms an open second opening.
[0008] When the first housing and the second housing are joined together through the first opening and the second opening to form a complete housing, the rear end of the pen feeding component is joined with the front end of the cutting component, so that the pencil can enter through the pen feeding hole and pass through the pen feeding component and the cutting component in sequence to complete the pencil sharpening.
[0009] When the first housing separates from the second housing, the pencil shavings produced by the cutting assembly cutting the pencil can be poured out from the second opening of the second housing.
[0010] A further technical solution of this utility model is as follows: the cutting assembly includes a tool holder and a hob mounted on the tool holder, the front end of the tool holder is inserted into the interface of the pen feed assembly, and the rear end of the tool holder is connected to the crank assembly.
[0011] A further technical solution of this utility model is: an annular retaining ring is provided at the second opening of the second housing to reduce the diameter of the second opening, thereby reducing the safety hazards of the hobbing cutter.
[0012] A further technical solution of this utility model is: a dust baffle is provided at the first opening of the first housing, and the dust baffle prevents the pen dust generated by the cutting component from entering the pen feeding component.
[0013] A further technical solution of this utility model is: a rotating engagement structure is provided between the dust baffle and the second housing, and the first housing and the second housing are combined through the rotating engagement structure.
[0014] A further technical solution of this utility model is: the outer diameter of the first circumferential sidewall is equivalent to the outer diameter of the second circumferential sidewall, and the first shell and the second shell form a cylindrical shell.
[0015] Another preferred subject is: a split pencil sharpener, comprising a first part and a second part that can be combined and separated from each other;
[0016] The first part includes a first housing and a pen feeding assembly disposed within the first housing. The first housing has a front end face with a pen feeding hole and a first peripheral sidewall disposed around the edge of the front end face. The rear end face of the first housing forms an open first opening.
[0017] The second part includes a second housing and a cutting assembly disposed within the second housing. The second housing includes a rear end face on which the crank assembly is mounted and a second peripheral sidewall. The front end face of the second housing forms an open second opening.
[0018] When the first housing and the second housing are joined together through the first opening and the second opening to form a complete housing, the rear end of the pen feeding component is joined to the front end of the cutting component.
[0019] The second housing can accommodate the pen shavings cut by the cutting assembly, and the second opening is a shavings outlet.
[0020] A further technical solution of this utility model is: the cutting assembly is connected to the crank assembly in a transmission manner, and an annular retaining ring is provided at the second opening of the second housing to reduce the diameter of the second opening, thereby reducing the safety hazards of the hobbing cutter;
[0021] A dust baffle is provided at the first opening of the first housing to prevent pen dust generated by the cutting assembly from entering the pen feeding assembly.
[0022] A further technical solution of this utility model is: a rotating engagement structure is provided between the dust baffle and the second housing, and the first housing and the second housing are combined through the rotating engagement structure.
[0023] A further technical solution of this utility model is: the outer diameter of the first peripheral sidewall is equivalent to the outer diameter of the second peripheral sidewall, and the first shell and the second shell form a cylindrical shell;
[0024] The cutting assembly includes a tool holder and a hob mounted on the tool holder, the front end of which is inserted into the interface of the pen feed assembly; the rear end of the tool holder is connected to the crank assembly.
[0025] Compared with the prior art, the advantages of this utility model are: the first part and the second part can be combined and separated from each other. The front end of the first part is provided with a pen inlet hole and a built-in pen inlet component. The second part has a built-in cutting component and a closed rear end and an open front end to form a second opening. When the first and second parts are connected, the rear end of the pen inlet component and the front end of the cutting component are directly inserted to form a continuous pencil channel and complete the pencil sharpening. This technical feature not only makes the structure of the pencil sharpener more flexible, but also makes the use of the housing more convenient.
[0026] By eliminating the separate chip collection box, the pen chips generated during cutting fall directly into the cavity formed by the second part of the housing itself and are doubly sealed by the annular retaining ring and the dust baffle. When emptying the chips, simply unscrew to separate the first part from the second part, and all the pen chips can be emptied at once through the second opening. This technical feature allows the housing cavity to also serve as a chip collection space, eliminating the need for auxiliary parts such as traditional drawer-type chip collection boxes, while also reducing molds and lowering assembly costs.
[0027] An annular retaining ring is provided at the second opening of the second housing, and a dust baffle is provided at the first opening of the first housing. When the two parts are combined, the dust baffle and the annular retaining ring overlap to form a double seal. When the first part is separated from the second part, the tool holder is still surrounded by the annular retaining ring, and the hob is always located inside the retaining ring. This technology ensures that the dust generated during cutting is completely confined inside the second housing and does not escape to pollute the environment. At the same time, it prevents children's fingers from reaching in and touching the dust, thus improving safety. Attached Figure Description
[0028] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.
[0029] Figure 1 This is a schematic diagram of the overall structure of the pencil sharpener of this utility model;
[0030] Figure 2 This is a schematic diagram of the first part of the pencil sharpener of this utility model;
[0031] Figure 3 This is a schematic diagram of the second part of the pencil sharpener of this utility model;
[0032] Figure 4 This is a disassembly diagram of the first part of the pencil sharpener of this utility model;
[0033] Figure 5 This is a disassembly diagram of the second housing and its internal cutting components. Detailed Implementation
[0034] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.
[0035] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it will not be further defined and explained in subsequent figures.
[0036] like Figures 1 to 3 The diagram shows the overall structure of the pencil sharpener of this utility model and its first part 20 and second part 30. The pencil sharpener includes a first part 20 and a second part 30 that can be combined and separated. The first part 20 includes a first housing 21 and a pencil feeding assembly 22 disposed within the first housing 21. The first housing 21 has a front end face a1 with a pencil feeding hole 23 and a first peripheral sidewall m1 surrounding the edge of the front end face a1. The rear end face b1 of the first housing 21 forms an open first opening n1. The second part 30 includes a second housing 31 and a cutting assembly 32 disposed within the second housing 31. The second housing 31 includes a rear end face b2 on which a crank assembly 33 is mounted and a second peripheral sidewall m2. The rear end face b2 of the second housing 31 is provided with a crank assembly 33 that is throttledly connected to the cutting assembly 32. The front end face a2 of the second housing 31 forms an open second opening n2.
[0037] Specifically, when the first housing 21 and the second housing 31 are assembled into a complete housing through the first opening n1 and the second opening n2, the rear end of the pencil feeding assembly 22 is aligned with the front end of the cutting assembly 32, allowing the pencil to enter through the pencil feeding hole 23 and pass sequentially through the pencil feeding assembly 22 and the cutting assembly 32 to sharpen the pencil. When the first housing 21 and the second housing 31 are separated, the pencil shavings produced by the cutting assembly 32 can be poured out from the second opening n2 of the second housing 31. This technology not only makes pencil feeding smoother, reduces the breakage rate, and improves the coaxiality of cutting, but also eliminates the need for traditional shavings collection boxes and their slide rails, clips, and other parts, reducing the total number of parts in the machine and simultaneously lowering material and labor costs.
[0038] Preferably, a rotating engagement structure i is provided between the dust baffle 24 and the second housing 31. This structure allows the first housing 21 and the second housing 31 to be combined. The outer diameter of the first circumferential sidewall m1 is approximately equal to the outer diameter of the second circumferential sidewall m2, forming a cylindrical housing. This technique allows the rotating engagement structure i to be directly molded onto the injection-molded housing, eliminating the need for additional metal springs or screws and reducing production costs. Furthermore, the equal outer diameters of the first circumferential sidewall m1 and the second circumferential sidewall m2, along with their outer surfaces on the same circumferential surface, result in a complete cylindrical shape, meeting the aesthetic requirements of modern integrated desktop stationery.
[0039] like Figure 4 The diagram shown is a disassembled schematic of the first part 20 of the pencil sharpener of this utility model. A dust baffle 24 is provided at the first opening n1 of the first housing 21. The dust baffle 24 prevents pencil shavings generated by the cutting component 32 from entering the pencil feeding component 22. This technology not only protects the pencil feeding roller and gear from graphite powder contamination, reducing wear and extending service life, but also reflects the noise generated by the high-speed cutting of the roller 35 back into the inner cavity of the second housing 31, reducing operating noise.
[0040] like Figure 5 The diagram shows a disassembled schematic of the second housing 31 and its internal cutting assembly 32 of this utility model. The cutting assembly 32 includes a tool holder 34 and a hob 35 mounted on the tool holder 34. The front end of the tool holder 34 is inserted into the interface of the pen feed assembly 22, and the rear end of the tool holder 34 is connected to the crank assembly 33. An annular retaining ring 36 is provided at the second opening n2 of the second housing 31 to reduce the diameter of the second opening n2, thereby reducing the safety hazards of the hob 35. This technical means not only keeps the hob 35 coaxial with the pen feed channel, improving the pen sharpening accuracy and transmission efficiency, but also the annular retaining ring 36 forms a physical barrier, preventing children's fingers from touching the hob 35, thus improving the safety of use.
[0041] The second housing 31 can accommodate the pen shavings cut by the cutting component 32, and the second opening n2 is the shavings pouring outlet, eliminating the need for a separate shavings collection box. This technical feature not only eliminates the wall thickness required for traditional drawers, making the internal cavity volume similar to the housing size and increasing the drawer box's capacity, but also reduces the overall height, making product storage more convenient and meeting the needs of mobile office scenarios.
[0042] By eliminating the separate chip collection box, the pen shavings generated during cutting fall directly into the cavity formed by the second part 30 housing itself and are doubly sealed by the annular retaining ring 36 and the dust baffle 24. When emptying the shavings, simply unscrew the first part 20 to separate it from the second part 30, and all the shavings can be emptied at once through the second opening n2. This technical feature not only allows the housing cavity to also serve as a chip collection space, eliminating the need for traditional drawer-type chip collection boxes and other auxiliary parts, but also reduces the number of mold parts and lowers assembly costs by eliminating the traditional drawer-type chip collection box and its auxiliary parts.
[0043] In the description of this utility model, it should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Similarly, "first" and "second" are only for ease of understanding and have no other directional meaning, and cannot be considered as limitations on this utility model.
[0044] This invention provides a split-type pencil sharpener. Specific examples are used to illustrate the principle and implementation of this invention. The descriptions of the embodiments are merely for the purpose of helping to understand this invention and its core ideas. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.
Claims
1. A split-type pencil sharpener, characterized in that: It includes a first part and a second part that can be combined and separated from each other; The first part includes a first housing and a pen feeding assembly disposed within the first housing. The first housing has a front end face with a pen feeding hole and a first peripheral sidewall disposed around the edge of the front end face. The rear end face of the first housing forms an open first opening. The second part includes a second housing and a cutting assembly disposed within the second housing. The second housing includes a rear end face on which a crank assembly is mounted and a second peripheral sidewall. The rear end face is provided with a crank assembly that is pulsatorically connected to the cutting assembly. The front end face of the second housing forms an open second opening. When the first housing and the second housing are joined together through the first opening and the second opening to form a complete housing, the rear end of the pen feeding component is joined with the front end of the cutting component, so that the pencil can enter through the pen feeding hole and pass through the pen feeding component and the cutting component in sequence to complete the pencil sharpening. When the first housing separates from the second housing, the pencil shavings produced by the cutting assembly cutting the pencil can be poured out from the second opening of the second housing.
2. The split-type pencil sharpener according to claim 1, characterized in that: The cutting assembly includes a tool holder and a hob mounted on the tool holder, the front end of which is inserted into the interface of the pen feed assembly; The rear end of the tool holder is connected to the crank assembly.
3. The split-type pencil sharpener according to claim 1, characterized in that: The second opening of the second housing is provided with an annular retaining ring to reduce the diameter of the second opening, thereby reducing the safety hazards of the hobbing cutter.
4. A split-type pencil sharpener according to claim 1, characterized in that: A dust baffle is provided at the first opening of the first housing to prevent pen dust generated by the cutting assembly from entering the pen feeding assembly.
5. A split-type pencil sharpener according to claim 4, characterized in that: A rotating engagement structure is provided between the dust baffle and the second housing, through which the first housing and the second housing are combined.
6. A split-type pencil sharpener according to claim 1, characterized in that: The outer diameter of the first circumferential sidewall is equivalent to the outer diameter of the second circumferential sidewall, and the first shell and the second shell together form a cylindrical shell.
7. A split-type pencil sharpener, characterized in that: It includes a first part and a second part that can be combined and separated from each other; The first part includes a first housing and a pen feeding assembly disposed within the first housing. The first housing has a front end face with a pen feeding hole and a first peripheral sidewall disposed around the edge of the front end face. The rear end face of the first housing forms an open first opening. The second part includes a second housing and a cutting assembly disposed within the second housing. The second housing includes a rear end face on which the crank assembly is mounted and a second peripheral sidewall. The front end face of the second housing forms an open second opening. When the first housing and the second housing are joined together through the first opening and the second opening to form a complete housing, the rear end of the pen feeding component is joined to the front end of the cutting component. The second housing can accommodate the pen shavings cut by the cutting assembly, and the second opening is a shavings outlet.
8. A split-type pencil sharpener according to claim 7, characterized in that: The cutting assembly is drivenly connected to the crank assembly; An annular retaining ring is provided at the second opening of the second housing to reduce the diameter of the second opening, thereby reducing the safety hazards of the hobbing cutter; A dust baffle is provided at the first opening of the first housing to prevent pen dust generated by the cutting assembly from entering the pen feeding assembly.
9. A split-type pencil sharpener according to claim 8, characterized in that: A rotating engagement structure is provided between the dust baffle and the second housing, through which the first housing and the second housing are combined.
10. A split-type pencil sharpener according to claim 7, characterized in that: The outer diameter of the first circumferential sidewall is equivalent to the outer diameter of the second circumferential sidewall, and the first shell and the second shell together form a cylindrical shell; The cutting assembly includes a tool holder and a hob mounted on the tool holder, the front end of which is inserted into the interface of the pen feed assembly; the rear end of the tool holder is connected to the crank assembly.