pencil sharpener

Abstract

The present application discloses a pencil sharpener, belonging to the technical field of stationery. The pencil sharpener comprises a housing and a trash can. The housing is connected to a cutting mechanism, and the trash can is arranged relative to the cutting mechanism. The housing and the trash can are movably connected and provided with a locking mechanism. The locking mechanism is adapted to fix the housing in a first position to enable the cutting mechanism to be used. When the locking mechanism is unlocked, the housing is adapted to move toward the bottom of the trash can to a second position. When the housing is in the first position, the trash can is unfolded to collect waste scraps. When the housing is in the second position, the housing moves toward the bottom of the trash can, thereby reducing the volume of the entire pencil sharpener, making it more convenient to carry and reducing production and transportation costs.

Description

Technical Field

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

[0002] Pencils, a common stationery item, require cutting during use. Pencil sharpeners are designed for this purpose. Pencil sharpeners can be categorized into two main types: manual and electric. To facilitate collecting waste cuttings from pencil cutting, pencil sharpeners typically include a waste box beneath the blade holder assembly. These waste boxes are often removable or retractable for easy disposal. Manual pencil sharpeners typically consist of a housing housing a blade for cutting pencils, a crank handle on the outside of the housing, and a waste box below the blade. The waste box is not foldable from the housing, and the handle protrudes from the outside.

[0003] Existing pencil sharpeners are generally not foldable, are bulky, and take up space, making them inconvenient to carry, or have large packaging volumes, resulting in high production and transportation costs. Summary of the Invention

[0004] The purpose of the present application is to provide a foldable pencil sharpener, so as to reduce the space occupied by the pencil sharpener when it is idle, reduce the production and transportation costs, and make the pencil sharpener more convenient to carry.

[0005] To achieve the above objectives, the technical solution adopted in this application is: the pencil sharpener includes a shell and a trash can, the shell is connected to the cutting mechanism, the trash can is arranged relative to the cutting mechanism, the shell and the trash can are movably connected and provided with a locking mechanism, the locking mechanism is suitable for fixing the shell in a first position so that the cutting mechanism can be used, and when the locking mechanism is unlocked, the shell is suitable for moving to a second position toward the bottom of the trash can.

[0006] As a preferred embodiment, the trash can is arranged on the outside of the shell, and the shell is suitable for sliding along the inner wall of the trash can, so as to increase the capacity of the trash can.

[0007] As a preference, the pencil sharpener comprises a trash cover assembly, wherein the trash cover assembly comprises a trash cover movably arranged relative to the trash can, and a trash cover seat suitable for driving the trash cover to move.

[0008] As a preference, the garbage cover is an integrally formed plastic plate, and a plurality of grooves are provided through the garbage cover along its width direction, and the grooves are suitable for bending.

[0009] As a preference, the bottom of the groove forms a concave plane, the width of the concave plane is 0.2 mm to 2.0 mm, and the thickness of the garbage cover at the concave plane is less than or equal to 0.8 mm.

[0010] As a preference, the trash can is provided with a first guide structure suitable for guiding the sliding of the trash cover, the first guide structure extending from the side of the trash can to the bottom surface, and the trash can is also provided with a second guide structure suitable for guiding the sliding of the trash cover seat, the two ends of the trash cover seat are clamped on the outer side of the second guide structure.

[0011] As a preferred embodiment, the garbage cover seat is provided with a cross beam along the width direction of the garbage cover, the cross beam is provided with a fourth protrusion facing the shell, the shell is provided with a corresponding slot, and the shell is provided with a guide slope suitable for guiding the fourth protrusion to insert into the slot; the side of the cross beam away from the fourth protrusion is also provided with a hand-holding portion, and the hand-holding portion is provided with a recessed area.

[0012] As a preferred embodiment, a first protrusion and a second protrusion are provided on the shell at intervals, and a corresponding third protrusion is provided on the top of the trash can. The third protrusion is suitable for being inserted between the first protrusion and the second protrusion. The upper surface of the first protrusion is a slope. The shell is suitable for deformation so that the first protrusion and the third protrusion are staggered. The first protrusion, the second protrusion, and the third protrusion form the locking mechanism.

[0013] Preferably, the cutting mechanism includes a handle assembly, the handle assembly including a handle and a handle base, the handle base being connected to the housing, and the handle being rotatably connected to the handle base. The handle is foldable, which helps to further reduce the volume of the pencil sharpener after folding.

[0014] As a preference, the handle assembly is arranged above the garbage cover assembly, and when the shell is in the second position, the garbage cover is opened to accommodate the handle assembly; the handle assembly also includes a handle sleeve, which is rotatably connected to the handle; the handle is provided with a convex shaft, and the handle seat is provided with a corresponding convex shaft hole, and the convex shaft is suitable for being inserted into the convex shaft hole; the cutting mechanism also includes a tool holder assembly, which is connected to the handle assembly, and the shell is provided with a pencil entry hole.

[0015] Compared with the prior art, the beneficial effect of the present application is that when the shell is in the first position, the trash can is unfolded to collect waste scraps; when the shell is in the second position, the shell moves closer to the trash can, thereby reducing the volume of the entire pencil sharpener, making it more convenient to carry and reducing production and transportation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the three-dimensional structure of the pencil sharpener;

[0017] Figure 2 is a schematic diagram of the three-dimensional structure of the pencil sharpener in a folded state;

[0018] Figure 3for Figure 1 Schematic diagram of the cross-section structure;

[0019] Figure 4 for Figure 2 Schematic diagram of the cross-section structure;

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the pencil sharpener when the trash cover is open;

[0021] Figure 6 It is a structural diagram of the garbage cover assembly;

[0022] Figure 7 This is a structural diagram of the garbage cover assembly from another angle;

[0023] Figure 8 for Figure 7 A magnified view of the local structure;

[0024] Figure 9 This is a structural diagram of the garbage cover;

[0025] Figure 10 Schematic diagram of the structure of the trash can;

[0026] Figure 11 Schematic diagram of the structure of the shell;

[0027] Figure 12 and Figure 13 Schematic diagram of the folding process of the pencil sharpener;

[0028] Figure 14 and Figure 15 Schematic diagram of the folding process of the handle assembly;

[0029] Figure 16 Schematic diagram of the structure of the handle;

[0030] In the figure: 00, pencil; 10, housing; 1a, pencil entry hole; 1b, slot; 11, guide slope; 12, first convex portion; 13, second convex portion; 20, cutting mechanism; 21, tool holder assembly; 22, handle assembly; 221, handle; 2211, convex shaft; 222, handle seat; 223, handle sleeve; 30, trash can; 3a, waste chip outlet; 31, first guide structure; 32, second guide structure; 33, third convex portion; 40, locking mechanism; 50, trash cover assembly; 51, trash cover; 51a, groove; 511, concave plane; 52, trash cover seat; 52a, mounting groove; 521, beam; 5211, fourth convex portion; 5212, recessed area; 522, end portion. DETAILED DESCRIPTION

[0031] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0032] In the description of this application, it should be noted that for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, the directions and positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of this application.

[0033] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0034] The terms "comprises" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0035] The present application provides a pencil sharpener, such as Figures 1-4 As shown, the pencil sharpener includes a shell 10 and a trash can 30. The shell 10 is connected to the cutting mechanism 20, and the trash can 30 is arranged relative to the cutting mechanism 20. The shell 10 and the trash can 30 are movably connected and provided with a locking mechanism 40. The locking mechanism 40 is suitable for fixing the shell 10 in a first position so that the cutting mechanism 20 can be used. When the locking mechanism 40 is unlocked, the shell 10 is suitable for moving to a second position toward the bottom of the trash can 30. Figure 1 、 Figure 3 The middle shell 10 is in the first position, at this time the pencil sharpener is unfolded, the cutting mechanism 20 is available, the pencil 00 can be inserted for cutting, and the trash can 30 is unfolded to collect the waste chips formed by cutting the pencil 00. Figure 2 、 Figure 4The middle shell 10 is in the second position, when the pencil sharpener is in a folded state, and the shell 10 is moved closer to the bottom of the trash can 30, so that the volume of the entire pencil sharpener is reduced, which solves the problems of pencil sharpeners in the prior art that are not foldable, are bulky, and take up space, making them inconvenient to carry, and that the packaging volume is large, resulting in high production and transportation costs. The pencil sharpener is more convenient to carry and reduces the costs of production, transportation, and warehousing.

[0036] Specifically, the cutting mechanism 20 includes a handle assembly 22 and a tool holder assembly 21. The tool holder assembly 21 is connected to the handle assembly 22. A pencil entry hole 1a is provided on the housing 10. The handle assembly 22 is used to drive the tool holder assembly 21 to rotate to cut the pencil 00. The trash can 30 is arranged below the tool holder assembly 21 and can automatically collect waste chips generated by cutting.

[0037] Existing pencil sharpeners generally have waste boxes that are detachable or pull-out, and the waste box is accommodated inside the shell, which limits the capacity of the waste box and causes inconvenience in use due to insufficient space for the waste box. As an improvement, the present application sets the trash can 30 on the outside of the shell 10, and the shell 10 is suitable for sliding along the inner wall of the trash can 30, so that the capacity of the trash can 30 can be increased by more than 50% compared with the existing hand-cranked pencil sharpeners; when the pencil sharpener is folded, first unlock the locking mechanism 40, and then press the shell 10 down into the trash can 30, which is simple to operate.

[0038] In order to facilitate the dumping of cutting waste, such as Figure 3 and Figure 5 As shown, the pencil sharpener includes a trash cover assembly 50, which includes a trash cover 51 that is movable relative to the trash can 30 and a trash cover seat 52 adapted to move the trash cover 51. Existing pencil sharpeners generally require the waste box to be pulled out or removed for waste disposal. However, the present pencil sharpener opens the trash cover 51 to expose the waste outlet 3a on the trash can 30, and then tilts the entire pencil sharpener to allow waste to be discharged through the waste outlet 3a, resulting in a simpler structure and easier operation.

[0039] Preferably, Figure 6-Figure 8 As shown, the garbage cover 51 is an integrally formed plastic plate, and is provided with a plurality of grooves 51a running through the garbage cover 51 along its width direction, and the grooves 51a are suitable for bending. The garbage cover 51 has a simple structure and low cost.

[0040] Furthermore, the bottom of the groove 51a forms a concave surface 511. The width x of the concave surface 511 is 0.2 mm to 2.0 mm, and can specifically be any number between 0.2 mm and 2.0 mm, inclusive. The thickness d of the trash cover 51 at the concave surface 511 is less than or equal to 0.8 mm, and can specifically be any number between 0.2 mm and 2.0 mm, inclusive. If the width of the concave surface 511 is too small, machining will be difficult. If it is too large, the trash cover 51 will be too flexible in the longitudinal direction. If the thickness of the trash cover 51 at the concave surface 511 is too large, bending will be difficult.

[0041] Correspondingly, such as Figure 10 As shown, the trash can 30 is provided with a first guide structure 31 adapted to guide the sliding movement of the trash cover 51. The first guide structure 31 extends from the side to the bottom of the trash can 30. The trash can 30 is also provided with a second guide structure 32 adapted to guide the sliding movement of the trash cover seat 52. The two ends 522 of the trash cover seat 52 are engaged with the outer side of the second guide structure 32. The trash cover 51 is provided with a plurality of grooves 51a extending through its width, allowing the trash cover 51 to be curled in the longitudinal direction while maintaining a certain rigidity in the width direction to prevent deformation. At the same time, the two ends 522 of the trash cover seat 52 are engaged with the outer side of the second guide structure 32, preventing the side of the trash can 30 provided with the waste outlet 3a from being easily deformed due to insufficient strength, thereby ensuring the strong fit between the trash can 30 and the outer shell 10 after it is unfolded.

[0042] More specifically, the first guide structure 31 is a chute, and the above structure of the garbage cover 51 facilitates the garbage cover assembly 50 to slide smoothly in the chute at a 90-degree angle formed by the waste outlet 3a and the bottom surface of the garbage bin 30; Figure 2 、 Figure 6 and Figure 10 As can be seen, in this embodiment, the second guide structure 32 includes two U-shaped grooves disposed in opposite directions, and the two ends 522 of the trash cover seat 52 are rectangular columns, each having an L-shaped hollow area corresponding to the second guide structure 32, so that the ends 522 can be snapped into the U-shaped grooves. This structure is simple, stable and reliable.

[0043] like Figure 6 and Figure 9 As shown, the garbage cover seat 52 is provided with a mounting groove 52a. The garbage cover assembly 50 can be assembled by installing the head of the garbage cover 51 into the mounting groove 52a of the garbage cover seat 52. The structure is simple and easy to assemble.

[0044] The garbage cover seat 52 is provided with a crossbeam 521 along the width direction of the garbage cover 51, and a fourth protrusion 5211 facing the housing 10 is provided at the crossbeam 521, and the upper and lower sides of the fourth protrusion 5211 are set as inclined surfaces. Figure 11As shown, the housing 10 is provided with a corresponding slot 1b, and a guide slope 11 is provided on the housing 10 for guiding the fourth protrusion 5211 into the slot 1b. When opening the trash cover 51, the crossbeam 521 is pulled outward while simultaneously applying downward force. The inclined surface on the lower side of the fourth protrusion 5211 slides relative to the slot 1b, allowing the fourth protrusion 5211 to disengage from the slot 1b, allowing the trash cover 51 to open downward. When closing the trash cover 51, the crossbeam 521 is lifted upward. With the cooperation of the guide slope 11 and the inclined surface on the upper side of the fourth protrusion 5211, the fourth protrusion 5211 naturally inserts into the slot 1b. The crossbeam 521 is released, and the trash cover assembly 50 is fixed in place by the fourth protrusion 5211 inserted into the slot 1b, preventing it from sliding down automatically. The structure and operation are simple. When the housing 10 slides down, the connection between the fourth protrusion 5211 and the slot 1b can drive the trash cover assembly 50 down.

[0045] Furthermore, a hand-grip portion is provided on the side of the crossbeam 521 away from the fourth protrusion 5211 . The hand-grip portion is provided with a recessed area 5212 , which makes it easier for fingers to apply force to hold the crossbeam 521 . The structure is simple and the processing cost is low.

[0046] like Figure 11-13 As shown, a first protrusion 12 and a second protrusion 13 are provided on the shell 10 at intervals, and a corresponding third protrusion 33 is provided on the top of the trash can 30. The third protrusion 33 is suitable for being inserted between the first protrusion 12 and the second protrusion 13. The upper surface of the first protrusion 12 is an inclined surface, so that when the shell 10 slides up relative to the trash can 30, the first protrusion 12 can pass through the third protrusion 33. The shell 10 is suitable for deformation so that the first protrusion 12 and the third protrusion 33 are staggered. The first protrusion 12, the second protrusion 13, and the third protrusion 33 form a locking mechanism 40. After using the pencil sharpener, empty the trash can and simultaneously press down on both sides of the lower portion of the housing 10 with your index finger and thumb. Applying downward force simultaneously causes both sides of the housing 10 to deform inward, with the arrows in the figure indicating the direction of force. When the first protrusion 12 is recessed and offset from the third protrusion 33, the housing 10 drives the cutting mechanism 20 downward. It is understood that the housing 10 also drives the trash cover assembly 50 downward. When the housing 10 reaches the bottom of the trash can 30, it is fully folded. The locking mechanism 40 is simple and easy to operate, facilitating easy assembly between the housing 10 and the trash can 30.

[0047] Further, such as Figure 14-16 As shown, the handle assembly 22 includes a handle 221 and a handle base 222. The handle base 222 is connected to the housing 10, and the handle 221 is rotatably connected to the handle base 222. The handle 221 can be folded, which is beneficial to further reduce the volume of the pencil sharpener after folding.

[0048] The handle assembly 22 also includes a handle sleeve 223, which is rotatably connected to the handle 221 to facilitate hand-held rotation of the handle 221. The handle seat 222 is provided with a groove suitable for accommodating the handle sleeve 223. The handle assembly 22 has a compact structure after being folded. The handle assembly 22 is arranged above the garbage cover assembly 50. When the shell 10 is in the second position, the garbage cover 51 is opened to accommodate the handle assembly 22, and space utilization is more reasonable.

[0049] More specifically, the handle 221 is provided with a convex shaft 2211, and the handle base 222 is provided with a corresponding convex shaft 2211 hole. The convex shaft 2211 is suitable for being inserted into the convex shaft 2211 hole. The structure and assembly method between the handle 221 and the handle base 222 are simple.

[0050] In this embodiment, the initial state of the pencil sharpener is as follows: Figure 2 As shown, at this time, all parts are in a folded state. When using the pencil sharpener, press the upper sides of the shell 10 with the index finger and thumb at the same time, and apply upward force at the same time. The shell 10 drives the garbage cover assembly 50 and the cutting mechanism 20 to move upward together. When it moves to the top of the trash can 30, the third protrusion 33 is automatically inserted between the first protrusion 12 and the second protrusion 13. Then, hold the handle sleeve 223 and pull it outward, so that the handle sleeve 223 and the handle 221 rotate outward along the protruding shaft 2211 to open the handle 221. Figure 3 As shown, insert the pencil 00 into the pencil hole 1a at the front end of the housing 10, and then rotate the handle 221 clockwise to sharpen the pencil. After the pencil 00 is sharpened, rotate the handle 221 counterclockwise to remove the pencil 00. Figure 5 As shown, the garbage cover assembly 50 is opened to dump the waste. After dumping, the handle 221 is folded, and then the lower sides of the housing 10 are pressed downward with the index finger and thumb to complete the folding of the pencil sharpener. The production of the entire pencil sharpener and the assembly of the various components are very convenient, with a simple structure and operation, low cost, stable performance, greatly improving the efficiency of use and reducing the production, transportation and use costs.

[0051] The above describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments. The above-described embodiments and the specification merely illustrate the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A pencil sharpener, characterized by: The trash can comprises a shell and a trash can, wherein the shell is connected to a cutting mechanism, the trash can is arranged relative to the cutting mechanism, the shell and the trash can are movably connected and provided with a locking mechanism, the locking mechanism is suitable for fixing the shell in a first position so that the cutting mechanism can be used, and when the locking mechanism is unlocked, the shell is suitable for moving toward the bottom of the trash can to a second position; a first protrusion and a second protrusion are provided on the shell at intervals, and a corresponding third protrusion is provided on the top of the trash can, the third protrusion is suitable for being inserted between the first protrusion and the second protrusion, the upper surface of the first protrusion is an inclined surface, and the shell is suitable for deformation so that the first protrusion and the third protrusion are staggered, and the first protrusion, the second protrusion and the third protrusion form the locking mechanism.

2. The pencil sharpener according to claim 1, wherein: The trash can is arranged on the outside of the shell, and the shell is suitable for sliding along the inner wall of the trash can.

3. The pencil sharpener according to claim 1, wherein: The pencil sharpener comprises a garbage cover assembly, which comprises a garbage cover movably arranged relative to the garbage bin and a garbage cover seat suitable for driving the garbage cover to move.

4. The pencil sharpener according to claim 3, wherein: The garbage cover is an integrally formed plastic plate. A plurality of grooves are provided through the garbage cover along its width direction, and the grooves are suitable for bending.

5. The pencil sharpener according to claim 4, wherein: The bottom of the groove forms a concave plane, the width of the concave plane is 0.2mm to 2.0mm, and the thickness of the garbage cover at the concave plane is less than or equal to 0.8mm.

6. The pencil sharpener according to claim 4, wherein: The trash can is provided with a first guide structure suitable for guiding the sliding of the trash cover, and the first guide structure extends from the side of the trash can to the bottom surface. The trash can is also provided with a second guide structure suitable for guiding the sliding of the trash cover seat, and the two ends of the trash cover seat are clamped on the outer side of the second guide structure.

7. The pencil sharpener according to claim 4, wherein: The garbage cover seat is provided with a cross beam along the width direction of the garbage cover, and the cross beam is provided with a fourth protrusion facing the shell, the shell is provided with a corresponding slot, and the shell is provided with a guiding inclined surface suitable for guiding the fourth protrusion to be inserted into the slot; the side of the cross beam facing away from the fourth protrusion is also provided with a hand-holding portion, and the hand-holding portion is provided with a recessed area.

8. The pencil sharpener according to any one of claims 3 to 7, characterized in that: The cutting mechanism includes a handle assembly, and the handle assembly includes a handle and a handle seat. The handle seat is connected to the shell, and the handle is rotatably connected to the handle seat.

9. The pencil sharpener according to claim 8, wherein: The handle assembly is arranged above the garbage cover assembly. When the shell is in the second position, the garbage cover is opened to accommodate the handle assembly; the handle assembly also includes a handle sleeve, which is rotatably connected to the handle; the handle is provided with a convex shaft, and the handle seat is provided with a corresponding convex shaft hole, and the convex shaft is suitable for being inserted into the convex shaft hole; the cutting mechanism also includes a tool holder assembly, which is connected to the handle assembly, and the shell is provided with a pencil entry hole.

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