Pencil feeding and discharging structure for pencil sharpener
By improving the pen-feeding and retracting structure of the pencil sharpener and adopting components such as a pen-feeding inner shell, pen-clamping mouth, telescopic rod, spring, soft clamping block, and cleaner, the problems of damage to the pen barrel and removal of wood chips caused by traditional vise-type pen-clamping devices have been solved, achieving convenient pen barrel protection and cleaning.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-03-31
AI Technical Summary
Existing pencil sharpeners with forward and backward pen mechanisms are prone to damaging the pencil barrel, making it difficult to remove shorter pencil barrels, and the wood shavings adhering to the pencil surface are difficult to remove.
The design incorporates a combination of components including an inner pen feed shell, a pen clamping opening, a first telescopic rod, a spring, a flexible clamping block, a pen feed outer shell, a second telescopic rod, bolts, buckles, and a cleaner. This design enables flexible clamping, telescopic movement, and cleaning functions, preventing damage to the pen barrel and facilitating the removal of short pen barrels and the removal of wood chips.
It effectively protects the integrity of the pen barrel, makes it easy to remove the short pen barrel, and removes wood shavings from the pencil surface, thus improving the user experience.
Smart Images
Figure CN224060753U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of pencil sharpeners, specifically to a pencil sharpener's advance and retraction mechanism. Background Technology
[0002] The widespread use of pencils led to the emergence of corresponding tools. Before the advent of pencil sharpeners, people used special knives to sharpen pencils, but this was very inconvenient and the resulting pencils were not aesthetically pleasing. The emergence of pencil sharpeners made this laborious task simple, and the resulting pencils were neat and uniform. The forward and backward pen mechanism is an indispensable part of pencil sharpeners, so a forward and backward pen mechanism for pencil sharpeners is needed.
[0003] Existing pencil sharpeners with retractable pen mechanisms suffer from problems such as the traditional vise-like pen gripping device easily damaging the pencil barrel during operation, making it difficult to remove shorter pencils, and the wood shavings adhering to the pencil surface making it inconvenient for users to use directly. Therefore, there is an urgent need for a new retractable pen mechanism for pencil sharpeners. Utility Model Content
[0004] Based on this, the purpose of this utility model is to provide a pen-advancing and retracting structure for a pencil sharpener, so as to solve the problems of existing devices, where traditional vise-type pen-clamping devices are prone to damaging the pen barrel, making it inconvenient to remove shorter pen barrels, and the wood shavings adhering to the pencil surface are inconvenient for users to use directly.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a pen feeding and retracting structure for a pencil sharpener, comprising a pen feeding shell, an inner pen feeding inner shell installed on the inner wall of the pen feeding shell, a pen clamping opening at the center of the inner pen feeding inner shell, a first telescopic rod installed on the inner wall of the inner pen feeding inner shell, a spring installed on the outer wall of the first telescopic rod, a first slider installed at the top of the first telescopic rod, and a soft clamping block installed on the outer wall of the first slider.
[0006] The inner wall of the pen feeding housing is equipped with a second telescopic rod, the inner wall of the pen feeding housing is equipped with bolts, the outer wall of the pen feeding housing is equipped with buckles, and the outer wall of the pen feeding housing is equipped with locking blocks.
[0007] A rotating rod is installed on the inner wall of the pen feeding inner shell, and a first gear is installed at the top of the rotating rod. An adjusting rod is installed on the outer wall of the pen feeding inner shell, and a second gear is installed at the top of the adjusting rod. A second slider is installed on the outer wall of the adjusting rod, and a cleaner is installed on the outer wall of the second slider.
[0008] Preferably, the first slider forms a telescopic structure with the pen feeding inner shell through the first telescopic rod, and the first telescopic rod is sleeved with a spring.
[0009] Preferably, the flexible clamp is slidably connected to the pen feeding inner shell via a first slider, and the first slider is movably connected to the pen feeding inner shell.
[0010] Preferably, the inner pen feeding shell is threadedly connected to the second telescopic rod, and the inner pen feeding shell and the outer pen feeding shell form a telescopic structure through the second telescopic rod.
[0011] Preferably, the buckle is symmetrically arranged with the central axis of the pen feeding inner shell, and the pen feeding inner shell and the pen feeding outer shell are engaged and connected.
[0012] Preferably, the second slider is threadedly connected to the adjusting rod, and the adjusting rod is movably connected to the pen feed inner shell.
[0013] Preferably, the adjusting rod forms a rotating structure with the pen feeding inner shell through the second gear, and the second gear is meshed with the first gear.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. This utility model, through its pen-feeding inner shell, pen-clamping mouth, first telescopic rod, spring, first slider, and flexible clamping block, addresses the limitations of traditional vise-type pen-clamping devices. Because the vise is made of metal, it can embed itself into the wooden pencil. For softer woods, excessive pressure can deform the pencil, affecting its normal use. This utility model, by pushing the first slider outwards, causes the flexible clamping block to retract using the first telescopic rod, inserting the pen into the pen-clamping mouth. The spring's rebound then clamps the pen in place. The flexible clamping block reduces damage to the pencil, improves aesthetics, and prevents deformation.
[0016] 2. This utility model, through the setting of a pen feeding shell, a pen feeding inner shell, a second telescopic rod, bolts, buckles, and locking blocks, allows the short-barreled pencil to be pushed out when the pen barrel is too short to be easily removed. Simply unlock the buckle, pull the pen feeding inner shell outward, and push the pen feeding inner shell with the push of the second telescopic rod.
[0017] 3. This utility model, through the setting of a rotating rod, a first gear, an adjusting rod, a second gear, a second slider, and a cleaner, allows the first gear to drive the adjusting rod on the second gear to rotate when the rotating rod is rotated. This causes the upper and lower second sliders to bring the cleaner closer together, clamping the pencil. When the pencil is rotated and removed, the cleaner can brush away the wood shavings adhering to the pencil surface, making it convenient for users to use directly. Attached Figure Description
[0018] Figure 1 This is a perspective view of the present utility model;
[0019] Figure 2 This is a schematic diagram of the internal components of the pen feeding inner shell of this utility model;
[0020] Figure 3 This is a side view of the present invention.
[0021] Figure 4 This is a rear view of the present invention.
[0022] In the diagram: 1. Pen feed outer shell; 2. Pen feed inner shell; 3. Pen clamping mouth; 4. First telescopic rod; 5. Spring; 6. First slider; 7. Flexible clamp; 8. Second telescopic rod; 9. Bolt; 10. Buckle; 11. Clamp; 12. Rotating rod; 13. First gear; 14. Adjusting rod; 15. Second gear; 16. Second slider; 17. Cleaner. Detailed Implementation
[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0024] The embodiments of this utility model will be described below based on its overall structure.
[0025] Please see Figure 1-4 A pen-feeding and retracting structure for a pen sharpener includes a pen-feeding outer shell 1, an inner pen-feeding inner shell 2 mounted on the inner wall of the outer shell 1, a pen-clamping opening 3 at the center of the inner pen-feeding inner shell 2, a first telescopic rod 4 mounted on the inner wall of the inner pen-feeding inner shell 2, a spring 5 mounted on the outer wall of the first telescopic rod 4, a first slider 6 mounted at the top of the first telescopic rod 4, and a flexible clamping block 7 mounted on the outer wall of the first slider 6. The first slider 6 and the inner pen-feeding inner shell 2 form a telescopic structure through the first telescopic rod 4, and the first telescopic rod 4 is sleeved with the spring 5. The flexible clamping block 7 is slidably connected to the inner pen-feeding inner shell 2 through the first slider 6, and the first slider 6 is movably connected to the inner pen-feeding inner shell 2. When using the device, pushing the first slider 6 outward causes the first telescopic rod 4 to retract, causing the flexible clamping block 7 to retract, inserting the pen into the pen-clamping opening 3. Then, the spring 5 rebounds, causing the flexible clamping block 7 to push and clamp the pen. The flexible clamping block 7 can reduce damage to the pen barrel, affect the appearance, and prevent deformation.
[0026] Please see Figure 1-4A pencil sharpener with a retractable pencil mechanism includes a second telescopic rod 8 installed on the inner wall of the pencil feeding housing 1, a bolt 9 installed on the inner wall of the pencil feeding inner housing 2, a buckle 10 installed on the outer wall of the pencil feeding housing 1, and a locking block 11 installed on the outer wall of the pencil feeding inner housing 2. The pencil feeding inner housing 2 is threadedly connected to the second telescopic rod 8, and the pencil feeding inner housing 2 and the pencil feeding housing 1 form a telescopic structure through the second telescopic rod 8. The buckle 10 is symmetrically arranged with the central axis of the pencil feeding inner housing 2, and the pencil feeding inner housing 2 is engaged with the pencil feeding housing 1. When using the device, the pencil feeding inner housing 2 is unlocked by unlocking the buckle 10 on the locking block 11, and then the pencil feeding inner housing 2 is pulled outward. Then, the pencil feeding inner housing 2 is pushed by the second telescopic rod 8, which pushes out the short pencil.
[0027] Please see Figure 1-4 A pencil sharpener with a retractable pen mechanism includes a rotating rod 12 mounted on the inner wall of a pencil feeding inner shell 2, a first gear 13 mounted at the top of the rotating rod 12, an adjusting rod 14 mounted on the outer wall of the pencil feeding inner shell 2, a second gear 15 mounted at the top of the adjusting rod 14, a second slider 16 mounted on the outer wall of the adjusting rod 14, and a cleaner 17 mounted on the outer wall of the second slider 16. The second slider 16 is threadedly connected to the adjusting rod 14, and the adjusting rod 14 is movably connected to the pencil feeding inner shell 2. The adjusting rod 14 and the pencil feeding inner shell 2 form a rotating structure through the second gear 15, and the second gear 15 is meshed with the first gear 13. When using the device, rotating the rotating rod 12 drives the first gear 13 to rotate, and the second gear 15 rotates under the drive of the first gear 13, which in turn drives the adjusting rod 14 to rotate. This causes the upper and lower second sliders 16 to bring the cleaner 17 closer together, clamping the pencil. When rotating to remove the pencil, the cleaners 17 on both sides can brush away the wood shavings adhering to the pencil surface, making it convenient for the user to use directly.
[0028] Working principle: In use, first move the device to a suitable position, then push the first sliders 6 on both sides with your fingers to move the soft clamps 7 on both sides away from each other. The first sliders 6, under force, drive the first telescopic rod 4 to retract, and drive the spring 5 to compress. Then insert the pencil into the pencil clamp 3, and then release the first sliders 6. Utilizing the elasticity of the spring 5, the compressed spring 5 rebounds, driving the first telescopic rod 4 to push the soft clamps 7 on both sides closer together, clamping the pencil. After the pencil is sharpened, rotate the rotating rod 12 to drive the first gear 13 to rotate. The second gear 15 rotates under the drive, and drives the adjusting rod 14 to rotate. Bring the second sliders 16 on both sides closer together, adjust the cleaner 17 to contact the surface of the pencil barrel, then push the first slider 6 to rotate and remove the pencil, allowing the cleaner 17 to brush away the wood shavings adhering to the pencil surface. When the pencil barrel is too short to remove easily, simply unlock the buckle 10 and pull the inner pencil housing 2 outward. The inner pencil housing 2 will then be pushed out of the outer pencil housing 1 via the second telescopic rod 8. Then push the first telescopic rod 4 to push the inner pencil housing 2 back into the outer pencil housing 1, thus removing the short pencil barrel. This completes the use of the device. Any content not described in detail in this specification belongs to the prior art known to those skilled in the art.
[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A feed and retract mechanism for a pencil sharpener comprising a feed housing (1) characterised in that: The inner wall of the pen feeding shell (1) is installed with a pen feeding inner shell (2), the central part of the pen feeding inner shell (2) is provided with a pen clamping opening (3), the inner wall of the pen feeding inner shell (2) is installed with a first telescopic rod (4), the outer wall of the first telescopic rod (4) is installed with a spring (5), the top end of the first telescopic rod (4) is installed with a first sliding block (6), and the outer wall of the first sliding block (6) is installed with a soft clamping block (7). The inner wall of the pen feeding shell (1) is installed with a second telescopic rod (8), the inner wall of the pen feeding inner shell (2) is installed with a bolt (9), the outer wall of the pen feeding shell (1) is installed with a buckle (10), and the outer wall of the pen feeding inner shell (2) is installed with a clamping block (11). The inner wall of the pen feeding inner shell (2) is installed with a rotating rod (12), the top end of the rotating rod (12) is installed with a first gear (13), the outer wall of the pen feeding inner shell (2) is installed with an adjusting rod (14), the top end of the adjusting rod (14) is installed with a second gear (15), the outer wall of the adjusting rod (14) is installed with a second sliding block (16), and the outer wall of the second sliding block (16) is installed with a cleaner (17).
2. The lead advancing and retracting structure for a pencil sharpener according to claim 1, wherein: The first sliding block (6) and the pen feeding inner shell (2) constitute a telescopic structure through the first telescopic rod (4), and the first telescopic rod (4) is sleeved with the spring (5).
3. The lead advancing and retracting structure of a pencil sharpener according to claim 1, wherein: The soft clamping block (7) and the pen feeding inner shell (2) are slidably connected through the first sliding block (6), and the first sliding block (6) is movably connected with the pen feeding inner shell (2).
4. The lead advancing and retracting structure of a pencil sharpener according to claim 1, wherein: The pen feeding inner shell (2) is threadedly connected with the second telescopic rod (8), and the pen feeding inner shell (2) and the pen feeding shell (1) constitute a telescopic structure through the second telescopic rod (8).
5. The lead advancing and retracting structure of a pencil sharpener according to claim 1, wherein: The buckle (10) is arranged on the pen feeding inner shell (2) in axis symmetry, and the pen feeding inner shell (2) is clamped and connected with the pen feeding shell (1).
6. The lead advancing and retracting structure of a pencil sharpener according to claim 1, wherein: The second sliding block (16) is threadedly connected with the adjusting rod (14), and the adjusting rod (14) is movably connected with the pen feeding inner shell (2).
7. The lead advancing and retracting structure of a pencil sharpener according to claim 1, wherein: The adjusting rod (14) and the pen feeding inner shell (2) constitute a rotating structure through the second gear (15), and the second gear (15) is meshedly connected with the first gear (13).