Pencil sharpener

Abstract

The pencil sharpener comprises a shell and a pencil sharpening mechanism installed in the shell, a transmission piece and a sharpening prompt switch are movably installed in the shell, the transmission piece is connected with the pencil sharpening mechanism and can move in the pencil advancing and retreating direction relative to the pencil sharpening mechanism, and a locking structure is arranged on the transmission piece. The sharpening prompt switch is provided with a locking position matched with the locking structure, the transmission piece is connected with the locking position through the locking structure so as to movably lock the sharpening prompt switch, and the transmission piece moves in the pencil feeding direction under stress so that the locking structure can be separated from the locking position so as to movably unlock the sharpening prompt switch. The sharpening prompt switch moves in the unlocking state to prompt that sharpening is completed, locking or unlocking is achieved between the transmission piece and the sharpening prompt switch by arranging the locking structure and the locking position, the structural strength is higher, and use is more reliable.

Description

Technical Field

[0001] The present application relates to the technical field of stationery products, and more specifically to a pencil sharpener. Background Art

[0002] After a period of use, the tip of a pencil will become blunt and shorter. Currently, pencil tips are mostly sharpened with a pencil sharpener. A pencil sharpener is a tool that can safely and quickly cut pencils. The sharpener rotates the blade relative to the inserted pencil to remove the wood layer on the outer wall of the pencil to expose the lead. The obliquely installed blade can then sharpen the lead to a point. The sharpened lead is more convenient for writing and drawing. However, ordinary pencil sharpeners cannot clearly indicate whether the sharpening operation is completed during the sharpening process, resulting in blind sharpening and continuous sharpening, which can easily cause the lead to be cut, resulting in increased pen costs and waste of resources. To address the aforementioned issues, a utility model patent with authorization publication number CN213035571U discloses a pencil sharpener and a pencil sharpener with a completion prompt function, comprising a mounting assembly and a cutting assembly, wherein the mounting assembly is used to mount and fix the cutting assembly, and the cutting assembly is used to cut a pencil. The sharpening completion prompt assembly is fixedly mounted at the inner bottom end of the mounting frame. The sharpening completion prompt assembly includes a detection device, a reminder device, and a recording device, wherein the detection device is electrically connected to the reminder device and the recording device, respectively. In this technical solution, when the pencil tip is sharpened, the tip just presses against a pressure-activated switch, which then transmits a signal to a voice announcement module, a light prompt module, and a pencil ejection prompt module, causing the voice announcement module to issue a voice announcement, and the light prompt module to issue a light prompt. However, this solution has the following main problems: the pencil sharpening completion prompt function is achieved by cooperating with multiple electronic components, and the battery is easily exhausted after a period of use, thus becoming unusable. In addition, the assembly requirements of the electronic components are high, resulting in high production and assembly costs and a short service life. Summary of the Invention

[0003] The technical problem to be solved by the present application is to provide a pencil sharpener, which realizes a sharpening reminder by cooperating with a transmission member and a sharpening reminder switch. The transmission member and the sharpening reminder switch are more reliable and have a longer service life than electronic components. In addition, the transmission member and the sharpening reminder switch are locked or unlocked by setting a locking structure and a locking position, which has higher structural strength and is more reliable in use.

[0004] The present application provides a pencil sharpener, comprising a housing and a pencil sharpening mechanism installed in the housing, wherein a transmission member and a sharpening prompt switch are movably installed in the housing, the transmission member being connected to the pencil sharpening mechanism and being movable relative to the pencil sharpening mechanism in a direction of advancing and retreating the pencil, the transmission member being provided with a locking structure, the sharpening prompt switch being provided with a locking position adapted to the locking structure, the transmission member being connected to the locking position via the locking structure to movably lock the sharpening prompt switch, the transmission member being subjected to force to move in the direction of advancing the pencil so as to disengage the locking structure from the locking position to movably unlock the sharpening prompt switch, and the sharpening prompt switch being movable in the unlocked state to prompt completion of sharpening.

[0005] The pen is inserted into the sharpening mechanism and can be cut by rotating. The insertion direction is the pen feeding direction, and as the pen rotates and penetrates deeper, the pen core is gradually sharpened. A transmission member and a sharpening prompt switch are installed in the housing, and the transmission member and the sharpening prompt switch are movable relative to the housing. A locking structure is provided on the transmission member, and a locking position is provided on the sharpening prompt switch. The sharpening prompt switch is locked by connecting the locking structure to the locking position, and is unlocked by disengaging the locking structure from the locking position. The sharpening prompt switch is movable relative to the housing to prompt the user that the sharpening is completed. A transmission member is connected to the pen sharpening mechanism and can move in the pen feeding and retracting directions relative to the pen sharpening mechanism. The transmission member disengages the locking structure from the locking position by moving in the pen feeding direction, and resets the locking structure by moving in the pen retracting direction. In the process of the pen core being gradually sharpened, the length of the pen core in the sharpening mechanism gradually increases, so the pen core can push the transmission member to move in the pen feeding direction, and the transmission member is subjected to the pushing force of the pen core to lock the locking structure. When the pen is sharpened, the transmission member is pushed and moves in the direction of the pen feeding, causing the locking structure to disengage from the locking position, thereby unlocking the sharpening reminder switch. The sharpening reminder switch is active in the unlocked state to notify the user that the sharpening is complete. When the user needs a sharpening reminder, he only needs to apply force to the sharpening reminder switch, causing the sharpening reminder switch to move under the force and drive the locking position, so that the locking position is connected to the locking structure, thereby locking the sharpening reminder switch in the active position. The pen is then inserted into the pen sharpening mechanism and rotated. When the pen is sharpened, the transmission member is pushed and moves in the pen feeding direction, causing the locking structure to disengage from the locking position, thereby unlocking the sharpening reminder switch. The sharpening reminder switch is movable and reset relative to the housing, i.e., notifying the user that the sharpening is complete. The user can then take the pen out for use. The sharpening reminder is achieved by the cooperation of the transmission member and the sharpening reminder switch, which has a simpler and more reliable structure. The transmission member and the sharpening reminder switch are more reliable and have a longer service life than electronic components. On the other hand, the transmission member and the sharpening reminder switch have a higher structural strength. The locking structure and the locking position are respectively arranged on the transmission member and the sharpening reminder switch, which makes the locking cooperation more reliable and extends the overall service life.

[0006] As an improvement, the transmission member is connected to a first reset elastic member, and the transmission member is movable and reset along the pen retracting direction by the action of the first reset elastic member. In this technical solution, the transmission member drives the locking structure to disengage from the locking position by moving along the pen advancing direction, and drives the locking structure to reset by moving along the pen retracting direction. By setting the transmission member to be connected to the first reset elastic member, when the transmission member is subjected to a pushing force and moves along the pen advancing direction, the locking structure disengages from the locking position so that the sharpening prompt switch is unlocked and prompts that the sharpening is completed. At this time, the first reset elastic member is in a compressed state due to the force of the transmission member. When the user takes out the sharpened pen, the transmission member is not subjected to the pushing force of the pen. The first reset elastic member is subjected to the elastic force to reset the transmission member so that it can be connected to the locking position of the sharpening prompt switch again. The structure is simple and reliable, and the transmission is efficient. The first reset elastic member in this solution is preferably a spring, which is reliable to use and has low cost.

[0007] As an improvement, the sharpening reminder switch is connected to a second reset elastic member, and the sharpening reminder switch is reset under the action of the second reset elastic member to prompt that the sharpening is completed. In this technical solution, the user applies force to the sharpening reminder switch to make the sharpening reminder switch active and connected to the transmission member. By setting the sharpening reminder switch to be connected to the second reset elastic member, after the transmission member moves along the pen feeding direction, the transmission member drives the locking structure to move out of the locking position, so that the sharpening reminder switch is unlocked. The sharpening reminder switch is reset under the elastic force of the second reset elastic member to prompt the user that the sharpening is completed. At this time, after the user takes out the sharpened pen, the transmission member is reset under the action of the first reset elastic member. When the user needs to sharpen the pen again, by applying force to the sharpening reminder switch again, the sharpening reminder switch is forced to move to connect and lock with the transmission member. Repeating the above steps can achieve the sharpening reminder. It is simple and reliable to use and has efficient transmission. The second reset elastic member in this solution is preferably a spring, which is reliable to use and low in cost.

[0008] As an improvement, the locking structure is a first buckle provided on the transmission member, and the locking position is a button hole provided on the sharpening reminder switch; or the locking structure is a button hole provided on the transmission member, and the locking position is the first buckle provided on the sharpening reminder switch. In this technical solution, the locking structure is the first buckle and the locking position is the button hole. The locking method of the buckle and the button hole is simple and reliable. On the other hand, this solution can also provide another specific method of locking structure and locking position, that is, the locking structure is a button hole provided on the transmission member, and the locking position is the first buckle provided on the sharpening reminder switch. The principle is the same, and the locking method is simple and reliable.

[0009] As an improvement, the locking structure is provided with a guide bevel adapted to the locking position, and the locking structure enters the locking position through the guide bevel. In this technical solution, the user applies force to the sharpening reminder switch to activate the sharpening reminder switch, and the sharpening reminder switch drives the locking position to move synchronously to abut against the locking structure of the transmission member. Through the abutment of the locking position and the guide bevel of the locking structure, the transmission member is driven to compress the first reset elastic member along the pen feeding direction under the guidance of the guide bevel to avoid the locking position. The locking structure is reset under the action of the first reset elastic member to insert into the locking position, thereby locking the sharpening reminder switch. The addition of the guide bevel on the locking structure makes the locking efficiency higher and the use more labor-saving and smooth.

[0010] As an improvement, the sharpening reminder switch is slidably mounted on the housing. The sharpening reminder switch slides toward the inside of the housing under the action of pressing force to connect and lock with the transmission member. The sharpening reminder switch slides and resets under the action of the second reset elastic member to indicate that the sharpening is completed. In this technical solution, by setting the sharpening reminder switch to slide with the housing, the user presses the sharpening reminder switch to drive the sharpening reminder switch to slide toward the inside of the housing. The sharpening reminder switch slides into the inside of the housing to connect and lock with the transmission member inside the housing. The transmission member moves along the pen feeding direction under the pushing force of the pen core to disengage the locking structure from the locking position, thereby making the sharpening reminder switch movable and unlocked. The sharpening reminder switch slides and resets toward the outside of the housing under the action of the second reset elastic member, thereby indicating that the sharpening is completed and making it convenient for the user to press and use it next time. The sliding fit is simple and reliable, and it is more labor-saving to use.

[0011] As an improvement, the housing is provided with a first mounting groove adapted for the sharpening reminder switch, and the sharpening reminder switch is slidably connected to the first mounting groove. In this technical solution, the housing is provided with a first mounting groove capable of accommodating the sharpening reminder switch. The sharpening reminder switch is restrained on the housing by the first mounting groove, preventing the sharpening reminder switch from being separated from the housing. The mounting structure is simpler and more reliable. The sharpening reminder switch is slidably installed in the first mounting groove. The sharpening reminder switch can be extended and retracted relative to the first mounting groove by sliding, thereby improving sliding efficiency.

[0012] As an improvement, the sharpening reminder switch is provided with a second clip, the first mounting groove is provided with a slide rail adapted to the first clip, the first clip is slidably connected to the slide rail, and the first clip cooperates with the slide rail to limit the sharpening reminder switch to the first mounting groove. In this technical solution, by providing a second clip on the sharpening reminder switch and a slide rail on the first mounting groove, the second clip is connected to the slide rail to limit the sharpening reminder switch to the first mounting groove, the sharpening reminder switch slides along the slide rail via the second clip to extend and retract relative to the first mounting groove, the slide rail has a sliding guiding effect on the second clip, and the slide rail can limit the sliding range of the second clip, making the sliding more efficient and reliable.

[0013] As an improvement, the pencil sharpening mechanism includes a tool holder and a blade mounted on the tool holder, the tool holder is provided with a connected pen inlet and a pencil sharpening groove, the tool holder is also provided with a second mounting groove connected to the pencil sharpening groove, and the transmission member is slidably mounted in the second mounting groove. In this technical solution, a pencil sharpening mechanism is provided which consists of a knife holder and a blade. A pen feed port and a pencil sharpening groove are provided on the knife holder. The pen is inserted into the pencil sharpening groove through the pen feed port along the pen feed direction and contacts the blade. The user rotates the pen so that the wooden layer on the outside of the pen rotates relative to the blade, thereby cutting off the wooden layer and exposing the pen lead. As the pen rotates deeper, the pen lead is gradually sharpened. A second mounting groove is provided on the knife holder, and the second mounting groove is used for slidingly mounting a transmission member, so that the transmission member can slide back and forth in the second mounting groove along the pen feed and retreat direction, and the second mounting groove is connected to the pencil sharpening groove. In the process of the pen lead being gradually sharpened, the length of the pen lead in the pencil sharpening groove gradually increases, so that the pen lead can pass through the pencil sharpening groove and enter the second mounting groove, thereby pushing the transmission member to slide along the pen feed direction. The transmission matching structure is simple and reliable, the pen tip pushes the transmission member to slide more labor-savingly, and the transmission efficiency is high.

[0014] As an improvement, the housing includes a chip box, a bracket, and a cover. One side of the bracket is connected to the chip box, and the other side of the bracket is connected to the cover. The pencil sharpening mechanism and transmission member are both mounted on the bracket, and the sharpening reminder switch is mounted on the cover. In this technical solution, the housing is configured to be composed of a chip box, a bracket, and a cover connected in sequence. The chip box and the cover are connected via the bracket. The bracket is used to mount the pencil sharpening mechanism and transmission member, and the cover is used to mount the sharpening reminder switch. This makes the overall component distribution more reasonable and reliable, improves space utilization, and is more convenient and labor-saving during production and installation, making the entire pencil sharpener structure more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of a pencil sharpener of the present application.

[0016] Figure 2 An exploded view of a pencil sharpener for this application.

[0017] Figure 3 This is a cross-sectional view of a pencil sharpener according to the present application when the sharpening reminder switch is in an active locked state.

[0018] Figure 4 This is a cross-sectional view of a pencil sharpener according to the present application when the sharpening reminder switch is in an active unlocked state.

[0019] Figure 5 This is a schematic diagram of the connection structure of the transmission member, the sharpening reminder switch, the first reset elastic member and the pen core in this application.

[0020] Figure 6 It is a schematic diagram of the three-dimensional structure of the transmission part in this application.

[0021] Figure 7 This is a schematic cross-sectional view of the pencil sharpening mechanism in this application.

[0022] As shown in the figure: 1. Shell; 11. First mounting slot; 111. Slide rail; 12. Chip box; 13. Bracket; 14. Cover; 2. Pen sharpening mechanism; 21. Blade holder; 211. Pen inlet; 212. Pen sharpening slot; 213. Second mounting slot; 22. Blade; 3. Transmission member; 31. Locking structure; 32. Guide slope; 4. Sharpening reminder switch; 41. Locking position; 42. Second buckle; 5. First reset elastic member; 6. Second reset elastic member; 7. Pen refill. DETAILED DESCRIPTION

[0023] In order to better understand the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely descriptions of exemplary embodiments of the present application and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0024] In the accompanying drawings, the thickness, size and shape of objects have been slightly exaggerated for ease of explanation. The accompanying drawings are only examples and are not drawn strictly to scale.

[0025] It should also be understood that the terms "comprising," "including," "having," "containing," and "including," when used in this specification, indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or combinations thereof. The terms "first," "second," and the like are primarily used to distinguish between different devices, elements, or components (the specific types and configurations of which may be the same or different), and are not intended to indicate or imply the relative importance or quantity of the devices, elements, or components indicated. Unless otherwise specified, "plurality" means two or more.

[0026] In addition, it should be noted that the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements, or components; it can be directly set on another component or another intermediate component may exist at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the invention. The terms used in the description of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] like Figures 1 to 7 As shown, the present application discloses a pencil sharpener, comprising a housing 1 and a pencil sharpening mechanism 2 installed in the housing 1, wherein the pencil sharpening mechanism 2 is installed in the housing 1, and a pen is inserted into the pencil sharpening mechanism 2 so as to be able to be cut by rotating. The insertion direction is the pen-feeding direction, and the direction opposite to the pen-feeding direction is the pen-retracting direction. As the pen rotates and penetrates deeper, the pen core 7 is gradually sharpened; a transmission member 3 and a sharpening prompt switch 4 are movably installed in the housing 1, the transmission member 3 is connected to the pencil sharpening mechanism 2 and can move in the pen-feeding and retracting directions relative to the pencil sharpening mechanism 2, a locking structure 31 is provided on the transmission member 3, and a locking position 41 adapted to the locking structure 31 is provided on the sharpening prompt switch 4, the transmission member 3 is connected to the locking position 41 through the locking structure 31 to movably lock the sharpening prompt switch 4, the transmission member 3 is forced to move in the pen-feeding direction to disengage the locking structure 31 from the locking position 41 to movably unlock the sharpening prompt switch 4, and the sharpening prompt switch 4 is movable in the unlocked state to prompt that the sharpening is completed;

[0028] The transmission member 3 and the sharpening reminder switch 4 are installed in the housing 1, and the transmission member 3 and the sharpening reminder switch 4 are movable relative to the housing 1. A locking structure 31 is provided on the transmission member 3, and a locking position 41 is provided on the sharpening reminder switch 4. The sharpening reminder switch 4 is locked by connecting the locking structure 31 with the locking position 41, and is unlocked by disengaging the locking structure 31 from the locking position 41. The sharpening reminder switch 4 is movable relative to the housing 1 to remind the user that the sharpening is completed. The transmission member 3 is connected to the pencil sharpening mechanism 2 and is relative to the pencil sharpening mechanism 2. The transmission member 3 can move in the pen-advancing and retracting directions. The transmission member 3 moves in the pen-advancing direction to disengage the locking structure 31 from the locking position 41. The transmission member 3 moves in the pen-retracting direction to reset the locking structure 31. During the process of gradually sharpening the pen core 7, the length of the pen core 7 in the pen-sharpening mechanism 2 gradually increases. Therefore, the pen core 7 can push the transmission member 3 to move in the pen-advancing direction. The driving force of the pen core 7 causes the transmission member 3 to disengage the locking structure 31 from the locking position 41, thereby unlocking the sharpening reminder switch 4. The sharpening reminder switch 4 is active in the unlocked state to remind the user that the sharpening is completed.

[0029] When the user needs to sharpen the tip, he only needs to apply force to the sharpening reminder switch 4, so that the sharpening reminder switch 4 is forced to move and drive the locking position 41, such as Figure 3 As shown, the locking position 41 is connected to the locking structure 31, thereby locking the sharpening prompt switch 4 in the active position. Then, the pen is inserted into the pen sharpening mechanism 2 and rotated. When the pen is sharpened, the transmission member 3 is pushed by the force and moves in the pen feeding direction, so that the locking structure 31 is disengaged from the locking position 41. Figure 4 As shown, the sharpening reminder switch 4 is unlocked and reset relative to the housing 1, which reminds the user that the sharpening is completed and the user can take out the pen for use. The sharpening reminder is achieved by cooperating with the transmission member 3 and the sharpening reminder switch 4. The structure is simpler and more reliable, and the transmission member 3 and the sharpening reminder switch 4 are more reliable and have a longer service life than electronic components. On the other hand, the structural strength of the transmission member 3 and the sharpening reminder switch 4 is higher. The locking structure 31 and the locking position 41 are respectively arranged on the transmission member 3 and the sharpening reminder switch 4, so that the locking cooperation is more reliable and the overall service life is extended.

[0030] More specifically, Figures 2 to 4As shown, the transmission member 3 is connected to the first reset elastic member 5, and the transmission member 3 is movable and reset in the pen retracting direction by the action of the first reset elastic member 5. The transmission member 3 drives the locking structure 31 to disengage from the locking position 41 by moving in the pen advancing direction. The transmission member 3 drives the locking structure 31 to reset by moving in the pen retracting direction. By setting the transmission member 3 to be connected to the first reset elastic member 5, when the transmission member 3 is subjected to the pushing force and moves in the pen advancing direction, the locking structure 31 disengages from the locking position 41, so that the sharpening prompt switch 4 is unlocked and prompts that the sharpening is completed. At this time, the first reset elastic member 5 is in a compressed state due to the force of the transmission member 3. When the user takes out the sharpened pen, the transmission member 3 is not subjected to the pushing force of the pen. The first reset elastic member 5 causes the transmission member 3 to be movable and reset by the elastic force, so as to be connected to the locking position 41 of the sharpening prompt switch 4 again. The structure is simple and reliable, and the transmission is efficient. The first reset elastic member 5 in this scheme is preferably a spring, which is reliable to use and has low cost.

[0031] More specifically, Figures 2 to 4 As shown, the sharpening reminder switch 4 is connected to a second reset elastic member 6. The sharpening reminder switch 4 is movable and reset under the action of the second reset elastic member 6 to prompt that the sharpening is completed. The user applies force to the sharpening reminder switch 4 to make the sharpening reminder switch 4 active and connected to the transmission member 3. By setting the sharpening reminder switch 4 to be connected to the second reset elastic member 6, after the transmission member 3 moves along the pen feeding direction, the transmission member 3 drives the locking structure 31 to move out of the locking position 41, so that the sharpening reminder switch 4 is unlocked. The sharpening reminder switch 4 is movable and reset by the elastic force of the second reset elastic member 6 to prompt the user that the sharpening is completed. At this time, after the user takes out the pen after sharpening, the transmission member 3 is movable and reset under the action of the first reset elastic member 5. When the user needs to sharpen the pen again, by applying force to the sharpening reminder switch 4 again, the sharpening reminder switch 4 is forced to move to connect and lock with the transmission member 3. Repeating the above steps can achieve the sharpening reminder. It is simple and reliable to use and has efficient transmission. The second reset elastic member 6 in this solution is preferably a spring, which is reliable to use and has low cost.

[0032] More specifically, Figures 3 to 5 As shown, the locking structure 31 is a first buckle provided on the transmission member 3, and the locking position 41 is a button hole provided on the sharpening reminder switch 4. The locking structure 31 is set as the first buckle and the locking position 41 is set as the button hole. The locking method of the buckle and the button hole is simple and reliable. On the other hand, the present solution can also provide another specific method of the locking structure 31 and the locking position 41, that is, the locking structure 31 is a button hole provided on the transmission member 3, and the locking position 41 is a first buckle provided on the sharpening reminder switch 4. The principle is the same, and the locking method is simple and reliable.

[0033] More specifically, Figure 6As shown, the locking structure 31 is provided with a guide bevel 32 adapted to the locking position 41. The locking structure 31 enters the locking position 41 through the guide bevel 32. The user applies force to the sharpening prompt switch 4 to activate the sharpening prompt switch 4. The sharpening prompt switch 4 drives the locking position 41 to move synchronously to abut against the locking structure 31 of the transmission member 3. The locking position 41 abuts against the guide bevel 32 of the locking structure 31. Under the guidance of the guide bevel 32, the transmission member 3 is driven to compress the first reset elastic member 5 along the pen feeding direction to avoid the locking position 41. The locking structure 31 is reset under the action of the first reset elastic member 5 to be inserted into the locking position 41, thereby locking the sharpening prompt switch 4. The guide bevel 32 is added to the locking structure 31, and the locking efficiency is higher and the use is more labor-saving and smooth.

[0034] More specifically, Figures 2 to 4 As shown, the sharpening reminder switch 4 is slidably installed on the shell 1. The sharpening reminder switch 4 slides toward the inside of the shell 1 under the action of the pressing force to connect and lock with the transmission member 3. The sharpening reminder switch 4 is slid and reset by the second reset elastic member 6 to indicate that the sharpening is completed. By setting the sharpening reminder switch 4 to slide with the shell 1, the user presses the sharpening reminder switch 4 to drive the sharpening reminder switch 4 to slide toward the inside of the shell 1. The sharpening reminder switch 4 slides into the inside of the shell 1 to connect and lock with the transmission member 3 inside the shell 1. The transmission member 3 moves along the pen feeding direction under the pushing force of the pen core 7 to disengage the locking structure 31 from the locking position 41, thereby making the sharpening reminder switch 4 movable and unlocked. The sharpening reminder switch 4 slides and resets to the outside of the shell 1 under the action of the second reset elastic member 6, thereby indicating that the sharpening is completed and making it convenient for the user to press and use it next time. The sliding fit is simple and reliable, and it is more labor-saving to use.

[0035] More specifically, Figures 2 to 4 As shown, the shell 1 is provided with a first mounting groove 11 adapted to the sharpening reminder switch 4, and the sharpening reminder switch 4 is slidably connected to the first mounting groove 11. The shell 1 is provided with a first mounting groove 11 that can accommodate the sharpening reminder switch 4. The sharpening reminder switch 4 is limited on the shell 1 by the first mounting groove 11 to prevent the sharpening reminder switch 4 from being separated from the shell 1. The installation structure is simpler and more reliable. The sharpening reminder switch 4 is slidably installed in the first mounting groove 11. The sharpening reminder switch 4 can be extended and retracted relative to the first mounting groove 11 by sliding, thereby improving the sliding efficiency.

[0036] More specifically, Figures 2 to 5As shown, the sharpening reminder switch 4 is provided with a second clip 42, and the first mounting groove 11 is provided with a slide rail 111 adapted to the first clip, and the first clip is slidably connected to the slide rail 111. The first clip cooperates with the slide rail 111 to limit the sharpening reminder switch 4 to the first mounting groove 11. By arranging the second clip 42 on the sharpening reminder switch 4 and arranging the slide rail 111 on the first mounting groove 11, the second clip 42 is connected to the slide rail 111 to limit the sharpening reminder switch 4 to the first mounting groove 11. The sharpening reminder switch 4 slides along the slide rail 111 through the second clip 42 to extend and retract relative to the first mounting groove 11. The slide rail 111 has a sliding guiding effect on the second clip 42, and the slide rail 111 can limit the sliding range of the second clip 42, so that the sliding is more efficient and reliable.

[0037] More specifically, Figure 3 、 Figure 4 and Figure 7 As shown, the pencil sharpening mechanism 2 includes a knife holder 21 and a blade 22 mounted on the knife holder 21. The knife holder 21 is provided with a pen inlet 211 and a pen sharpening groove 212 that are connected. The knife holder 21 is also provided with a second mounting groove 213 that is connected to the pen sharpening groove 212. The transmission member 3 is slidably mounted in the second mounting groove 213. The pencil sharpening mechanism 2 is composed of the knife holder 21 and the blade 22. The knife holder 21 is provided with a pen inlet 211 and a pen sharpening groove 212. The pen is inserted into the pen sharpening groove 212 through the pen inlet 211 along the pen feeding direction and contacts the blade 22. The user rotates the pen so that the wood layer on the outside of the pen rotates relative to the blade 22, so that the wood layer is cut off and the pen core 7 is exposed, and as the pen is rotated, the pen core 7 is exposed. As the pen is continuously rotated and penetrated, the pen core 7 is gradually sharpened. By providing a second mounting groove 213 on the tool holder 21, the second mounting groove 213 is used for slidingly mounting the transmission member 3, so that the transmission member 3 can slide back and forth in the second mounting groove 213 along the pen advancing and retreating direction, and the second mounting groove 213 is connected to the pen sharpening groove 212. In the process of the pen core 7 being gradually sharpened, the length of the pen core 7 in the pen sharpening groove 212 gradually increases, so the pen core 7 can pass through the pen sharpening groove 212 and enter the second mounting groove 213, thereby pushing the transmission member 3 to slide along the pen advancing direction. The transmission matching structure is simple and reliable, the pen tip pushes the transmission member 3 to slide more labor-saving, and the transmission efficiency is high.

[0038] More specifically, Figures 2 to 4As shown, the shell 1 includes a chip box 12, a bracket 13 and a cover 14. One side of the bracket 13 is connected to the chip box 12, and the other side of the bracket 13 is connected to the cover 14. The pencil sharpener mechanism 2 and the transmission member 3 are both installed on the bracket 13, and the sharpening reminder switch 4 is installed on the cover 14. The shell 1 is composed of a chip box 12, a bracket 13 and a cover 14 connected in sequence. The chip box 12 and the cover 14 are connected through the bracket 13. The bracket 13 is used to install the pencil sharpener mechanism 2 and the transmission member 3, and the cover 14 is used to install the sharpening reminder switch 4. The overall distribution of components is more reasonable and reliable, which improves space utilization and is more convenient and labor-saving in production and installation, making the entire pencil sharpener structure more reliable.

[0039] This application is not limited to the above-mentioned optimal implementation method. Anyone can derive various other forms of products based on the inspiration of this application. However, no matter what changes are made in their shape or structure, any technical solution that is the same or similar to that of this application falls within the scope of protection of this application.

Claims

1. A pencil sharpener comprising a housing (1) and a pencil sharpening mechanism (2) mounted in the housing (1), characterized in that: A transmission member (3) and a sharpening prompt switch (4) are movably mounted in the housing (1); the transmission member (3) is connected to the pencil sharpening mechanism (2) and can move relative to the pencil sharpening mechanism (2) in the direction of advancing and retreating the pencil; a locking structure (31) is provided on the transmission member (3); a locking position (41) adapted to the locking structure (31) is provided on the sharpening prompt switch (4); the transmission member (3) is connected to the locking position (41) through the locking structure (31) to lock the sharpening prompt switch (4); the transmission member (3) is moved in the direction of advancing the pencil by a force so that the locking structure (31) is disengaged from the locking position (41) to unlock the sharpening prompt switch (4); and the sharpening prompt switch (4) is movable in the unlocked state to prompt that the sharpening is completed.

2. A pencil sharpener according to claim 1, characterized in that: The transmission member (3) is connected to a first reset elastic member (5), and the transmission member (3) is movable and reset along the pen retracting direction by the action of the first reset elastic member (5).

3. A pencil sharpener according to claim 1 or 2, characterized in that: The sharpening prompt switch (4) is connected to a second reset elastic member (6), and the sharpening prompt switch (4) is movably reset under the action of the second reset elastic member (6) to prompt that the sharpening is completed.

4. A pencil sharpener according to claim 1, characterized in that: The locking structure (31) is a first buckle provided on the transmission member (3), and the locking position (41) is a buckle hole provided on the sharpening prompt switch (4); or, the locking structure (31) is a buckle hole provided on the transmission member (3), and the locking position (41) is a first buckle provided on the sharpening prompt switch (4).

5. A pencil sharpener according to claim 4, characterized in that: The locking structure (31) is provided with a guide inclined surface (32) adapted to the locking position (41), and the locking structure (31) enters the locking position (41) through the guide inclined surface (32).

6. A pencil sharpener according to claim 3, characterized in that: The sharpening reminder switch (4) is slidably mounted on the housing (1); the sharpening reminder switch (4) is slid toward the inside of the housing (1) under the action of a pressing force to connect and lock with the transmission member (3); the sharpening reminder switch (4) is slid and reset under the action of a second reset elastic member (6) to indicate that the sharpening is completed.

7. A pencil sharpener according to claim 6, characterized in that: The housing (1) is provided with a first mounting groove (11) adapted to the sharpening reminder switch (4), and the sharpening reminder switch (4) is slidably connected to the first mounting groove (11).

8. A pencil sharpener according to claim 7, characterized in that: The sharpening reminder switch (4) is provided with a second clip (42), the first installation groove (11) is provided with a slide rail (111) adapted to the first clip, the first clip is slidably connected to the slide rail (111), and the first clip cooperates with the slide rail (111) to limit the sharpening reminder switch (4) within the first installation groove (11).

9. The pencil sharpener according to claim 1, characterized in that: The pencil sharpening mechanism (2) comprises a knife holder (21) and a blade (22) mounted on the knife holder (21); the knife holder (21) is provided with a pen inlet (211) and a pencil sharpening groove (212) that are connected; the knife holder (21) is further provided with a second mounting groove (213) that is connected with the pencil sharpening groove (212); and the transmission member (3) is slidably mounted in the second mounting groove (213).

10. The pencil sharpener according to claim 1, characterized in that: The housing (1) comprises a chip box (12), a bracket (13) and a cover (14); one side of the bracket (13) is connected to the chip box (12); the other side of the bracket (13) is connected to the cover (14); the pencil sharpening mechanism (2) and the transmission member (3) are both mounted on the bracket (13); and the pencil sharpening prompt switch (4) is mounted on the cover (14).

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