Pencil feeding mechanism and intelligent pencil sharpener thereof

Abstract

The invention discloses a pencil feeding mechanism and an intelligent pencil sharpener thereof. The pencil feeding mechanism comprises a supporting piece, and a central axis is defined by the supporting piece; the pen clamping assemblies are rotatably erected on the supporting piece, the pen clamping assemblies are arranged in the circumferential direction of the central axis so as to define pen clamping gaps between the pen clamping assemblies, the pen clamping assemblies are suitable for moving in the radial direction relative to the supporting piece so as to adjust the size of the pen clamping gaps, and each pen clamping assembly comprises an impeller; the adjusting piece is connected to the pencil clamping assemblies and can provide acting force for driving all the pencil clamping assemblies to move in the radial direction towards the central axis, so that all the pencil clamping assemblies clamp pencils; and the worm gear is meshed with the impeller so as to drive the pen clamping assembly to rotate. The pencil clamping assembly is suitable for radially moving relative to the supporting piece, so that the size of the pencil clamping gap is adjusted, and the pencil feeding mechanism is suitable for clamping pencils with different diameters; the adjusting piece can provide acting force for driving all the pencil clamping assemblies to move in the radial direction towards the central axis so as to clamp the pencils, and pencil feeding or pencil withdrawing is achieved.

Description

Technical Field

[0001] The invention relates to the field of intelligent pencil sharpeners, in particular to a pen feeding mechanism and an intelligent pencil sharpener thereof. Background Art

[0002] The smart pencil sharpener is a new type of stationery. The way it works is that when a pencil is inserted into the smart pencil sharpener, the motor starts to work, the knife holder rotates, and then the pencil starts to be sharpened automatically, instead of the traditional hand-cranking to make the knife holder rotate to sharpen the pencil.

[0003] However, there are many kinds of pencils on the market, and the diameters of pencils are also different. The pen feeding mechanism of the current smart pencil sharpener is difficult to adapt to a wide variety of pencils. If the diameter of the pencil is large, it is easy to make the pencil difficult to insert or impossible to insert into the pen feeding mechanism. Summary of the invention

[0004] An object of the present invention is to provide a pencil feeding mechanism suitable for clamping pencils of different diameters.

[0005] Another object of the present invention is to provide an intelligent pencil sharpener having the above-mentioned pencil feeding mechanism, so that the intelligent pencil sharpener is suitable for cutting pencils of different diameters.

[0006] To achieve at least one of the above purposes, the technical solution adopted by the present invention is: a pen feeding mechanism, comprising: a supporting member, the supporting member defines a central axis; a plurality of pen clamping assemblies, the pen clamping assemblies are rotatably mounted on the supporting member, the plurality of pen clamping assemblies are arranged along the circumference of the central axis to define a pen clamping gap between each of the pen clamping assemblies, the pen clamping assemblies are suitable for radial movement relative to the supporting member to adjust the size of the pen clamping gap, and the pen clamping assembly includes an impeller; an adjusting member, the adjusting member is connected to the pen clamping assembly, and can provide a force driving each of the pen clamping assemblies to move radially toward the central axis so that each of the pen clamping assemblies clamps a pencil; and a worm gear, the worm gear is meshed with the impeller to drive the pen clamping assembly to rotate.

[0007] Preferably, the adjusting member and the supporting member are stacked in a direction parallel to the central axis to define an extrusion space between the adjusting member and the supporting member, and the extrusion space is capable of accommodating the pen clamp assembly; the adjusting member is suitable for moving relative to the supporting member in a direction parallel to the central axis to adjust the extrusion space so that the pen clamp assembly is suitable for radial movement relative to the supporting member.

[0008] Preferably, the upper surface of the supporting member has a plurality of recessed portions, the recessed portions are capable of accommodating and supporting the two ends of the pen clamping assembly, the recessed portions are evenly distributed along the circumference of the central axis, so that the pen clamping assemblies are evenly distributed along the circumference of the central axis, and the recessed portions extend radially, so that the pen clamping assembly is suitable for radial movement relative to the supporting member; the adjusting member has a plurality of pressing portions, the pressing portions protrude and extend in the direction of the supporting member, so that the pressing portions are pressed against the pen clamping assembly, and an adjustable extrusion space is formed between the pressing portions and the recessed portions.

[0009] As a preferred embodiment, the inner recessed portion has a guide surface on a side facing the adjusting member, the plane on which the guide surface is located is perpendicular to the central axis, the guide surface is capable of supporting and guiding the pen clamping assembly to move radially relative to the supporting member, the pressing portion has at least one adjustment surface on a side facing the supporting member, the extrusion space is formed between the adjustment surface and the guide surface, and the adjustment surface extends obliquely in a direction away from the central axis from an end close to the pen inlet of the intelligent pencil sharpener to an end away from the pen inlet of the intelligent pencil sharpener, so that the size of the extrusion space along the direction parallel to the central axis gradually decreases from the end close to the central axis to the end away from the central axis.

[0010] As a preferred embodiment, the pen clamp assembly further includes a first shaft segment, a roller and a second shaft segment, the first shaft segment, the impeller, the roller and the second shaft segment are sequentially arranged along the axial direction of the pen clamp assembly, the first shaft segment and the second shaft segment are respectively matched with the inner recess, so that the pen clamp assembly is mounted on the support and is suitable for radial movement relative to the support, and the roller is capable of clamping the pencil to achieve advancing or retracting the pencil; under the condition that each of the pen clamp assemblies is mounted on the support, the teeth of the impeller of one of the pen clamp assemblies extend to the corner of the roller and the second shaft segment of another adjacent pen clamp assembly.

[0011] Preferably, the support member further has a plurality of interconnected cavities, wherein the cavities penetrate the support member in a direction parallel to the central axis, and the cavities are capable of accommodating the roller and the impeller. The inner recess includes two grooves, and the two grooves are respectively located on opposite sides of the cavity and are connected to the cavity. The grooves are capable of accommodating and supporting the first shaft segment or the second shaft segment, and the bottom surface of the grooves forms the guide surface.

[0012] As a preferred embodiment, the pressing portion includes a first pressing plate and a second pressing plate which are spaced apart, at least a portion of the first pressing plate and at least a portion of the second pressing plate extend into the cavity to define an accommodating cavity between the first pressing plate and the second pressing plate, and the accommodating cavity is capable of accommodating the roller; the adjustment surface includes a first adjustment surface and a second adjustment surface, the first adjustment surface is formed on a side of the first pressing plate facing the support, the first adjustment surface is suitable for abutting against a surface of the impeller, the second adjustment surface is formed on a side of the second pressing plate facing the support, the second adjustment surface is suitable for abutting against the second shaft segment to provide a force driving the pen clamp assembly to move radially toward the central axis.

[0013] Preferably, the pressing portion further comprises a connecting plate and an inserting strip, wherein the connecting plate is capable of connecting the first pressing plate and the second pressing plate, wherein the accommodating cavity is formed between the first pressing plate, the connecting plate and the second pressing plate, and the inserting strip is protrudingly located on a side of the connecting plate away from the accommodating cavity, and the inserting strip extends in a direction parallel to the central axis; the supporting member comprises a slot, and the slot is mounted and adapted to the inserting strip so that the inserting strip is suitable for moving along the slot to guide the adjusting member to move relative to the supporting member in a direction parallel to the central axis.

[0014] As a preference, the pen feeding mechanism further comprises a reset member, wherein the reset member is elastically connected to the adjusting member and a fixing member of the intelligent pencil sharpener, and the reset member is capable of providing a force driving the adjusting member to move toward the supporting member.

[0015] In order to achieve at least one of the above purposes, the technical solution adopted by the present invention is: an intelligent pencil sharpener, comprising: a pen feeding mechanism as described in any one of the above; a fixing member, the fixing member having a guide bar extending in a direction parallel to the central axis; the adjusting member of the pen feeding mechanism also includes a main body, the main body is provided with a guide groove, the guide groove is installed and adapted to the guide bar so that the guide bar is suitable for moving along the guide groove to guide the adjusting member to move relative to the fixing member in a direction parallel to the central axis, and each pressing part of the adjusting member is connected to the main body.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The pen clamping assembly is suitable for radial movement relative to the supporting member, so as to adjust the size of the pen clamping gap so that the pen feeding mechanism is suitable for clamping pencils of different diameters; the adjusting member can provide a force to drive each pen clamping assembly to move radially toward the central axis to clamp the pencil and realize the advancement or withdrawal of the pencil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1is an exploded diagram of the internal structure of a smart pencil sharpener according to some embodiments of the present application.

[0019] Figure 2 is a top view of a pen feeding mechanism according to some embodiments of the present application.

[0020] Figure 3 It is a three-dimensional structural diagram of the pen feeding mechanism according to some embodiments of the present application.

[0021] Figure 4 It is a top view of the cooperation between the pen clamping assembly and the worm gear of the pen feeding mechanism according to some embodiments of the present application.

[0022] Figure 5 is a cross-sectional view of a pen feeding mechanism according to some embodiments of the present application.

[0023] Figure 6 It is a three-dimensional structural diagram of a pen clamping assembly of a pen feeding mechanism according to some embodiments of the present application.

[0024] Figure 7 is an exploded view of a pen clamping assembly of a pen feeding mechanism according to some embodiments of the present application.

[0025] Figure 8 It is a three-dimensional structural diagram of a support member of a pen feeding mechanism according to some embodiments of the present application.

[0026] Fig. 9 It is a three-dimensional structural diagram of the adjustment component of the pen feeding mechanism according to some embodiments of the present application.

[0027] Fig.10 It is a cross-sectional view of the cooperation between the supporting member and the adjusting member of the pen feeding mechanism according to some embodiments of the present application.

[0028] Fig.11 It is a cross-sectional view of the cooperation between the supporting member and the adjusting member of the pen feeding mechanism according to some embodiments of the present application.

[0029] Fig.12 It is a cross-sectional view of a pen clamping gap of a pen feeding mechanism in a small-size state according to some embodiments of the present application.

[0030] Fig.13 It is a cross-sectional view of a pen clamping gap of a pen feeding mechanism in a large-size state according to some embodiments of the present application.

[0031] Fig.14 It is a cross-sectional view of the cooperation between the adjusting member and the fixing member of the smart pencil sharpener according to some embodiments of the present application.

[0032] In the figure: 1, pen feeding mechanism; 10, pen clamping gap; 20, squeezing space; 30, supporting member; 31, cavity; 32, inner concave portion; 321, groove; 322, guide surface; 33, slot; 40, pen clamping assembly; 41, first matching member; 411, second shaft section; 412, positioning section; 42, roller; 43, second matching member; 431, connecting section; 432, mounting section; 433, impeller; 434, first shaft section ; 435, protrusion; 44, corner; 50, adjustment member; 51, main body; 511, guide groove; 52, pressing portion; 521, first pressing plate; 522, second pressing plate; 523, connecting plate; 524, insert strip; 53, adjustment surface; 531, first adjustment surface; 532, second adjustment surface; 54, accommodating chamber; 60, worm gear; 70, reset member; 2, smart pencil sharpener; 80, fixing member; 81, guide strip. DETAILED DESCRIPTION

[0033] The present invention is further described below 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 a new embodiment.

[0034] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present invention 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 the present invention.

[0035] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0036] The terms "including" 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 comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0037] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, a contact connection, or an indirect connection through an intermediate medium, and it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] A pen feeding mechanism 1, such as Figure 1-Figure 14 As shown, it includes a support member 30, a plurality of pen clamping assemblies 40, an adjusting member 50 and a worm gear 60. The support member 30 defines a central axis C. The pen clamping assembly 40 is rotatably mounted on the support member 30, and a plurality of pen clamping assemblies 40 are arranged along the circumference of the central axis C to define a pen clamping gap 10 between each pen clamping assembly 40. The pen clamping assembly 40 is suitable for radial movement relative to the support member 30, so as to adjust the size of the pen clamping gap 10 so that the pen feeding mechanism 1 is suitable for clamping pencils of different diameters. The pen clamping assembly 40 includes an impeller 433. The adjusting member 50 is connected to the pen clamping assembly 40, so as to provide a force to drive each pen clamping assembly 40 to move radially toward the central axis C, so that each pen clamping assembly 40 clamps the pencil to achieve pen feeding or retracting. The worm gear 60 is engaged with the impeller 433 of the pen clamping assembly 40 to drive the pen clamping assembly 40 to rotate.

[0039] Specifically, when an external force is applied, for example, when a thicker pencil is inserted between the pencil clamping assemblies 40, the force of the adjusting member 50 is overcome, so that each pencil clamping assembly 40 moves radially away from the central axis C, thereby increasing the size of the pencil clamping gap 10. At the same time, the force of the adjusting member 50 makes each pencil clamping assembly 40 have a tendency to move radially toward the central axis C, thereby making the pencil reliably clamped between each pencil clamping assembly 40 to achieve the pen in or out. Further, when the external force is removed, for example, when a thicker pencil is pulled out, the force of the adjusting member 50 makes each pencil clamping assembly 40 move radially toward the central axis C until the initial position, thereby reducing the size of the pencil clamping gap 10 to be suitable for clamping a thinner pencil.

[0040] It is worth mentioning that the radial movement includes the movement of the pen clamp assembly 40 along the diameter direction of the virtual circle with the central axis C as the center, and also includes the movement of the pen clamp assembly 40 along the tangent direction of the virtual circle with the central axis C as the center.

[0041] In at least one embodiment, the pen feeding mechanism 1 includes two pen clamping assemblies 40 arranged radially opposite to each other. Figure 1-Figure 4As shown, the pen feeding mechanism 1 includes three pen clamping assemblies 40 that are circumferentially rotationally symmetrically arranged. It should be understood that the pen feeding mechanism 1 may also include four or more pen clamping assemblies 40, and each pen clamping assembly 40 may be asymmetrically arranged, symmetrically arranged, or rotationally symmetrically arranged, and the present application does not make any specific limitation on this.

[0042] In some embodiments, Figure 1 , Figure 5 Fig.10 and Fig.11 As shown, the adjusting member 50 and the supporting member 30 are stacked along a direction parallel to the central axis C, defining an extrusion space 20 between the adjusting member 50 and the supporting member 30, and the extrusion space 20 is capable of accommodating the pen clamp assembly 40; the adjusting member 50 is suitable for moving relative to the supporting member 30 along a direction parallel to the central axis C to adjust the extrusion space 20, so that the pen clamp assembly 40 is suitable for radial movement relative to the supporting member 30.

[0043] That is, by moving the adjusting member 50 relative to the supporting member 30 in a direction parallel to the central axis C, the extrusion space 20 can be adjusted, for example, the extrusion space 20 is adapted to contract or expand in the radial direction; for another example, the extrusion space 20 is adapted to move in the radial direction; for another example, the extrusion space 20 is adapted to extend in a spiral shape around the central axis C, etc. Further, the pen clamping assembly 40 is clamped between the adjusting member 50 and the supporting member 30, and the pen clamping assembly 40 is accommodated in the extrusion space 20 between the adjusting member 50 and the supporting member 30. By adjusting the extrusion space 20, the position of the pen clamping assembly 40 or the movable range of the pen clamping assembly 40 can be adjusted, and then the radial distance between the pen clamping assembly 40 and the central axis C can be adjusted, that is, the size of the pen clamping gap 10 between each pen clamping assembly 40 can be adjusted, so that the pen feeding mechanism 1 is suitable for clamping pencils of different thicknesses.

[0044] It is worth mentioning that, compared with the cooperation modes such as rotation, rolling, meshing, and compound motion, in this embodiment, the adjusting member 50 moves relative to the supporting member 30 in a direction parallel to the central axis C to adjust the extrusion space 20, that is, the adjusting member 50 translates along a straight line, which simplifies the cooperation between the adjusting member 50 and the supporting member 30, helps to reduce intermediate transmission, and helps to improve the reliability of the cooperation between the adjusting member 50 and the supporting member 30. In other words, the function of the pen clamp assembly 40 being suitable for radial movement can be achieved through a relatively simple cooperation movement mode.

[0045] In some embodiments, Figure 5 and Figure 8As shown, the upper surface of the support member 30 has a plurality of inner recesses 32, and the inner recesses 32 are capable of accommodating and supporting both ends of the pen clamp assembly 40. The plurality of inner recesses 32 are evenly distributed along the circumference of the central axis C, so that the plurality of pen clamp assemblies 40 are evenly distributed along the circumference of the central axis C. The inner recesses 32 extend radially, so that the pen clamp assembly 40 is suitable for radial movement relative to the support member 30; Fig. 9 As shown, the adjusting member 50 has a plurality of pressing portions 52 , which protrude and extend toward the direction of the supporting member 30 so that the pressing portions 52 press against the pen clamping assembly 40 , and an adjustable squeezing space 20 is formed between the pressing portions 52 and the inner recess 32 .

[0046] It should be understood that the support member 30 is clamped between the inner recess 32 and the pressing portion 52. Specifically, the inner recess 32 supports the pen clamp assembly 40, so that the pen clamp assembly 40 is rotatably mounted on the support member 30, and the inner recess 32 guides the pen clamp assembly 40 to move radially, thereby adjusting the size of the pen clamp gap 10 between each pen clamp assembly 40. The pressing portion 52 presses against the pen clamp assembly 40 to provide a force that drives the pen clamp assembly 40 to move radially toward the central axis C, so that the pen clamp assembly 40 can reliably clamp the pencil.

[0047] It is worth mentioning that, by the adjustment member 50 moving relative to the support member 30 in a direction parallel to the central axis C, the squeeze space 20 between the inner recess 32 and the pressing portion 52 can be adjusted so that the pen clamping assembly 40 is suitable for radial movement relative to the support member 30; and the pressing portion 52 can provide a force to drive the pen clamping assembly 40 to move radially toward the central axis C, so that the pen clamping assembly 40 clamps the pencil. In other words, the function of the pen clamping assembly 40 being suitable for radial movement and clamping the pencil can be achieved through a relatively simple coordinated movement between the adjustment member 50 and the support member 30, which is conducive to avoiding the addition of additional parts, thereby simplifying the structure and transmission of the pen feeding mechanism 1, and improving the stability and reliability of the pen feeding mechanism 1, and making the structure of the pen feeding mechanism 1 more compact and reducing the volume of the pen feeding mechanism 1. In addition, it is also conducive to reducing the manufacturing cost of the pen feeding mechanism 1.

[0048] In some embodiments, Figure 8-Figure 11 As shown, the inner recessed portion 32 has a guide surface 322 on the side facing the adjusting member 50, and the plane where the guide surface 322 is located is perpendicular to the central axis C. The guide surface 322 is able to support and guide the pen clamping assembly 40 to move radially relative to the supporting member 30. The pressing portion 52 has at least one adjustment surface 53 on the side facing the supporting member 30, and an extrusion space 20 is formed between the adjustment surface 53 and the guide surface 322. From one end close to the pen inlet of the intelligent pencil sharpener 2 to the end away from the pen inlet of the intelligent pencil sharpener 2, the adjustment surface 53 extends obliquely in a direction away from the central axis C, so that from the end close to the central axis C to the end away from the central axis C, the size of the extrusion space 20 along the direction parallel to the central axis C gradually decreases.

[0049] It should be understood that the plane where the guide surface 322 of the inner recess 32 is located is set perpendicular to the central axis C, which is conducive to ensuring that the pen clamp assembly 40 only has rotation and radial movement, that is, it is conducive to avoiding the movement of the pen clamp assembly 40 in a direction parallel to the central axis C, thereby simplifying the movement of the pen clamp assembly 40 and improving the reliability of the movement of the pen clamp assembly 40.

[0050] It is worth mentioning that the worm gear 60 is located below each pen clamping assembly 40, so as to be meshed with each pen clamping assembly 40. Under the condition that the pen clamping assembly 40 does not move in a direction parallel to the central axis C, the height of the worm gear 60 in the intelligent pencil sharpener 2 along the central axis C can be kept fixed, that is, it is helpful to avoid the worm gear 60 from moving in the direction of the central axis C in order to maintain meshing with the pen clamping assembly 40, so that the heights of the pen clamping assembly 40 and the worm gear 60 in the intelligent pencil sharpener 2 along the central axis C are respectively kept fixed, that is, the spacing between the pen clamping assembly 40 and the worm gear 60 remains stable, which is helpful to improve the reliability of the meshing transmission between the impeller 433 of the pen clamping assembly 40 and the worm gear 60, and further simplify the structure and transmission of the pen feeding mechanism 1.

[0051] Further, as described above, the adjustment surface 53 of the pressing part 52 extends obliquely, so that the size of the extrusion space 20 along the direction parallel to the central axis C gradually decreases from the end close to the central axis C to the end away from the central axis C. It should be understood that the adjustment surface 53 presses against the pen clamping assembly 40, that is, the pen clamping assembly 40 is clamped between the guide surface 322 and the adjustment surface 53. Under the condition that the adjustment member 50 is located in the initial position, the size of the end of the extrusion space 20 close to the central axis C along the direction parallel to the central axis C is larger, so as to accommodate the pen clamping assembly 40, and the size of the end of the extrusion space 20 away from the central axis C along the direction parallel to the central axis C is smaller, and cannot accommodate the pen clamping assembly 40, so that the pen clamping assembly 40 is kept at a position close to the central axis C in the radial direction, that is, the size of the pen clamping gap 10 is smaller. When the adjusting member 50 moves relative to the supporting member 30 in a direction parallel to the central axis C, the dimension between the guiding surface 322 and the adjusting surface 53 in a direction parallel to the central axis C is expanded, that is, the dimension of the end of the extrusion space 20 close to the central axis C in a direction parallel to the central axis C is increased, and the dimension of the end of the extrusion space 20 away from the central axis C in a direction parallel to the central axis C is also increased, so as to accommodate the pen clamping assembly 40, thereby making the pen clamping assembly 40 suitable for radial movement away from the central axis C, thereby increasing the size of the pen clamping gap 10.

[0052] Specifically, Fig.13As shown, under the condition of being acted upon by an external force, for example, when a thicker pencil is inserted between the pen clamping assemblies 40, the adjusting member 50 is able to move away from the supporting member 30 in a direction parallel to the central axis C, so that the size of the squeezing space 20 in a direction parallel to the central axis C is increased, and then the end of the squeezing space 20 away from the central axis C is also able to accommodate the pen clamping assembly 40, so that each pen clamping assembly 40 is suitable for moving radially away from the central axis C, thereby increasing the size of the pen clamping gap 10.

[0053] At the same time, the adjusting member 50 has a tendency to move toward the supporting member 30 along a direction parallel to the central axis C, so that the size of the extrusion space 20 has a tendency to decrease along a direction parallel to the central axis C; and the adjusting surface 53 presses against the pen clamping assembly 40 to provide a force driving the pen clamping assembly 40 to move radially toward the central axis C, so that the pen clamping assembly 40 has a tendency to move radially toward the central axis C, thereby enabling the pencil to be reliably clamped between the pen clamping assemblies 40 to achieve pen advancement or retraction.

[0054] Further, such as Fig.12 As shown, when the external force is removed, for example, when a thicker pencil is pulled out, the adjusting member 50 moves toward the supporting member 30 along the direction parallel to the central axis C, so that the size of the squeezing space 20 along the direction parallel to the central axis C is reduced, and then the end of the squeezing space 20 away from the central axis C is difficult to accommodate the pen clamping assembly 40, and the adjusting surface 53 is able to drive the pen clamping assembly 40 to move radially toward the central axis C until the initial position, and then the size of the pen clamping gap 10 is reduced to be suitable for clamping a thinner pencil.

[0055] In other embodiments, from one end close to the pen inlet of the smart pencil sharpener 2 to one end away from the pen inlet of the smart pencil sharpener 2, the guide surface 322 extends obliquely in a direction close to the central axis C, the plane where the adjustment surface 53 is located is perpendicular to the central axis C, and an extrusion space 20 is formed between the guide surface 322 and the adjustment surface 53, so that from one end close to the central axis C to one end away from the central axis C, the size of the extrusion space 20 along the direction parallel to the central axis C gradually decreases. In other embodiments, from one end close to the pen inlet of the smart pencil sharpener 2 to one end away from the pen inlet of the smart pencil sharpener 2, the guide surface 322 extends obliquely in a direction close to the central axis C, and the adjustment surface 53 extends obliquely in a direction away from the central axis C, so that from one end close to the central axis C to one end away from the central axis C, the size of the extrusion space 20 along the direction parallel to the central axis C gradually decreases. This application does not impose specific restrictions on this.

[0056] In some embodiments, Figure 3 and Figure 6As shown, the pen clamp assembly 40 further includes a first shaft section 434, a roller 42, and a second shaft section 411. The first shaft section 434, the impeller 433, the roller 42, and the second shaft section 411 are sequentially arranged along the axial direction of the pen clamp assembly 40. Specifically, the first shaft section 434 and the second shaft section 411 are respectively matched with the inner recess 32, so that the pen clamp assembly 40 is mounted on the support member 30 and is suitable for radial movement relative to the support member 30. The roller 42 of each pen clamp assembly 40 is capable of clamping a pencil to achieve pen feeding or pen retraction. Furthermore, under the condition that each pen clamping assembly 40 is mounted on the supporting member 30, the gear teeth of the impeller 433 of one pen clamping assembly 40 extend to the corner 44 of the roller 42 and the second shaft segment 411 of another adjacent pen clamping assembly 40, thereby facilitating a more compact arrangement of each pen clamping assembly 40, and on the basis of ensuring stable meshing between the impeller 433 of the pen clamping assembly 40 and the worm gear 60, facilitating reducing the overall size of the pen feeding mechanism 1.

[0057] It should be understood that the radial dimension of the roller 42 is greater than the radial dimension of the second shaft section 411, and the corner 44 is defined between the second shaft section 411 of the roller 42. Further, the maximum radial dimension of the teeth of the impeller 433 is greater than the radial dimension of the roller 42, and thus, when the teeth of the impeller 433 and the worm wheel 60 are meshed, it is helpful to avoid interference between the roller 42 and the worm wheel 60. Further, each pen clamp assembly 40 is arranged rotationally symmetrically with respect to the central axis C, which is helpful to avoid interference caused by the impellers 433 of two adjacent pen clamp assemblies 40 being too close, that is, the roller 42 and the impeller 433 are arranged alternately in the circumferential direction, which is helpful to make the impellers 433 of each pen clamp assembly 40 evenly distributed in the circumferential direction, so that the force of each impeller 433 on the worm wheel 60 is more evenly distributed on the worm wheel 60, which is helpful to make the force of the worm wheel 60 balanced, so as to extend the service life of the worm wheel 60, and to improve the reliability of the meshing transmission between the worm wheel 60 and each impeller 433. Furthermore, the teeth of the impeller 433 extend into the corner 44 between the roller 42 and the second shaft segment 411 , which is beneficial to fully utilize the internal space of the intelligent pencil sharpener 2 , thereby reducing the radial size of the pen feeding mechanism 1 , and further beneficial to reducing the volume of the intelligent pencil sharpener 2 .

[0058] It is worth mentioning that, compared with the impeller 433 being arranged near the axial end of the pen clamp assembly 40, in the present embodiment, the impeller 433 is arranged near the axial middle section of the pen clamp assembly 40, which is beneficial to reducing the torsional deformation of the first shaft segment 434 and the second shaft segment 411 caused by torque and the bending deformation caused by bending moment, so that the load distribution of the pen clamp assembly 40 is more uniform, thereby improving the stability and reliability of the transmission. In addition, it is also beneficial to reduce the impact and vibration of the impeller 433 during the meshing transmission process, thereby reducing the noise during the meshing transmission of the impeller 433 and the worm gear 60, and extending the service life of the impeller 433 and the worm gear 60.

[0059] In at least one embodiment, Figure 6 and Figure 7 As shown, the pen clamp assembly 40 is assembled by a first matching piece 41, a roller 42 and a second matching piece 43. The first matching piece 41 includes a second shaft section 411 and a positioning section 412 arranged in sequence along the axial direction, and the second matching piece 43 includes a connecting section 431, a mounting section 432, an impeller 433 and a first shaft section 434 arranged in sequence along the axial direction. Specifically, the roller 42 is suitable for being sleeved on the mounting section 432 of the second matching piece 43, and one side end face of the roller 42 is suitable for abutting against the end face of the impeller 433. The connecting section 431 of the second matching piece 43 is plugged into the first matching piece 41, so that the second matching piece 43 is suitable for moving synchronously with the first matching piece 41. Furthermore, when the second fitting member 43 is inserted into the first fitting member 41, the positioning section 412 of the first fitting member 41 can abut against the other end face of the roller 42, thereby clamping the roller 42 axially between the positioning section 412 and the impeller 433, which is conducive to preventing the roller 42 from axially displacing, thereby facilitating the roller 42 to abut against the pencil to perform the operation of advancing and retracting the pencil. Furthermore, the end face of the impeller 433 abutting against the roller 42 is provided with a protruding portion 435 protruding in the axial direction, and the protruding portion 435 is suitable for abutting against the end face of the roller 42 to increase the friction between the impeller 433 and the roller 42, which is conducive to the synchronous rotation of the roller 42, the second fitting member 43 and the first fitting member 41.

[0060] In some embodiments, Figure 2 , Figure 3 and Figure 8 As shown, the support member 30 also has a plurality of interconnected cavities 31, which penetrate the support member 30 in a direction parallel to the central axis C. The cavity 31 is capable of accommodating the roller 42 and the impeller 433. The inner recess 32 includes two grooves 321, which are respectively located on opposite sides of the cavity 31 and are connected to the cavity 31. The grooves 321 are capable of accommodating and supporting the first shaft segment 434 or the second shaft segment 411, and the bottom surface of the grooves 321 forms a guide surface 322.

[0061] It should be understood that the worm wheel 60 is disposed below the pen clamp assembly 40 in a direction parallel to the central axis C, so as to be connected to the driving source of the intelligent pencil sharpener 2. Furthermore, the cavity 31 passes through the support member 30 in a direction parallel to the central axis C, and the impeller 433 is accommodated in the cavity 31, which is conducive to the meshing of the impeller 433 and the worm wheel 60, and reduces the interference of the support member 30 on the rotation of the impeller 433 or the worm wheel 60.

[0062] In addition, the roller 42 and the impeller 433 are both accommodated in the cavity 31, that is, in the direction parallel to the central axis C, the roller 42, the impeller 433 and the support member 30 at least partially overlap, so that the structure of the pen feeding mechanism 1 is more compact, which is beneficial to reducing the size of the pen feeding mechanism 1 in the direction parallel to the central axis C, thereby reducing the height of the intelligent pencil sharpener 2.

[0063] It is worth mentioning that the support member 30 surrounds the outer circumference of the roller 42 and the impeller 433, so as to protect the roller 42 and the impeller 433. At the same time, it is helpful to avoid interference between other parts of the intelligent pencil sharpener 2 and the roller 42 and the impeller 433, thereby helping to improve the transmission reliability of the pen feeding mechanism 1 and the reliability during the pen feeding and retracting operations.

[0064] In some embodiments, Figure 5 and Fig. 9 As shown, the pressing part 52 includes a first pressing plate 521 and a second pressing plate 522 which are spaced apart, and at least a portion of the first pressing plate 521 and at least a portion of the second pressing plate 522 extend into the cavity 31. That is, in a direction parallel to the central axis C, the pressing part 52 and the support member 30 at least partially overlap, so that the structure of the pen feeding mechanism 1 is more compact, thereby facilitating a reduction in the height of the intelligent pencil sharpener 2.

[0065] Furthermore, the accommodating cavity 54 is defined between the first pressing plate 521 and the second pressing plate 522, and the accommodating cavity 54 is capable of accommodating the roller 42. That is, the roller 42 is disposed between the first pressing plate 521 and the second pressing plate 522, so that the roller 42 can be axially limited, which is beneficial to reducing the risk of the roller 42 being displaced in the axial direction; and the roller 42 and the impeller 433 can be separated, which is beneficial to reducing the risk of the roller 42 interfering with the impeller 433 after displacement, and the risk of the roller 42 being damaged after the gear teeth of the impeller 433 are broken, so as to further improve the reliability and stability of the transmission of the pen feeding mechanism 1.

[0066] Furthermore, the adjustment surface 53 includes a first adjustment surface 531 and a second adjustment surface 532. The first adjustment surface 531 is formed on the side of the first pressing plate 521 facing the support member 30, and the first adjustment surface 531 is suitable for abutting against the surface of the impeller 433. The second adjustment surface 532 is formed on the side of the second pressing plate 522 facing the support member 30, and the second adjustment surface 532 is suitable for abutting against the second shaft segment 411 to provide a force driving the pen clamp assembly 40 to move radially toward the central axis C.

[0067] It should be understood that, compared with only one adjustment surface 53, in this embodiment, the first adjustment surface 531 and the second adjustment surface 532 are arranged at intervals to abut against the pen clamp assembly 40, so as to improve the reliability and stability of the force of the pressing portion 52 of the adjustment member 50 on the pen clamp assembly 40, which is conducive to preventing the pen clamp assembly 40 from axially deflecting. In addition, compared with the first adjustment surface 531 abutting against the first shaft segment 434, the second adjustment surface 532 abuts against the second shaft segment 411. In this embodiment, Figure 5 As shown, the first adjustment surface 531 abuts against the surface of the impeller 433, that is, it is closer to the middle section of the pen clamp assembly 40 along the axial direction, which is conducive to reducing the bending effect caused by the moment, thereby improving the rotation stability of the pen clamp assembly 40. It is worth mentioning that the second adjustment surface 532 abuts against the impeller 433, thereby providing the impeller 433 with a force toward the worm gear 60, and then in the process of the pen clamp assembly 40 moving radially toward or away from the central axis C, it is conducive to keeping the impeller 433 and the worm gear 60 in effective and stable meshing, thereby further improving the transmission stability and reliability of the pen feeding mechanism 1.

[0068] In some embodiments, Fig. 9 As shown, the pressing part 52 further includes a connecting plate 523 and an inserting strip 524. The connecting plate 523 is connected to the first pressing plate 521 and the second pressing plate 522, which is beneficial to improving the structural strength of the pressing part 52, thereby improving the structural reliability of the pen feeding mechanism 1. It should be understood that the first pressing plate 521, the connecting plate 523 and the second pressing plate 522 form a receiving cavity 54 to accommodate the roller 42.

[0069] Furthermore, if Figure 8 and Fig. 9 As shown, the inserting strip 524 is protrudingly located on the side of the connecting plate 523 away from the accommodating cavity 54, and the inserting strip 524 extends in a direction parallel to the central axis C; the supporting member 30 has a slot 33, and the slot 33 is installed and adapted to the inserting strip 524, so that the inserting strip 524 is suitable for moving along the slot 33 to guide the adjusting member 50 to move relative to the supporting member 30 in a direction parallel to the central axis C. It should be understood that the cooperation between the inserting strip 524 and the slot 33 is conducive to reducing the risk of the adjusting member 50 rotating or tilting relative to the supporting member 30, thereby making the extrusion space 20 between each pair of adjusting surfaces 53 and the guiding surface 322 consistent or nearly consistent, that is, it is conducive to reducing the distance difference between each pen clamping assembly 40 accommodated in each extrusion space 20 and the central axis C, thereby making the center of the pen clamping gap 10 coincide with the central axis C or nearly coincide with it, which is conducive to improving the centering of the pencil.

[0070] It should be understood that the support member 30 is fixed to the intelligent pencil sharpener 2, and the central axis C of the support member 30 coincides with or approaches to coincide with the rotation center of the tool holder of the intelligent pencil sharpener 2. The closer the center of the pencil clamping gap 10 is to the rotation center of the tool holder, that is, the closer the center line of the pencil is to the rotation center of the tool holder, the more conducive it is to reducing the risk of the pencil lead breaking due to uneven force during the cutting process.

[0071] It is worth mentioning that the insertion strip 524 is located on the side of the connecting plate 523 away from the accommodating cavity 54, which helps to avoid interference between the insertion strip 524 and the worm gear 60 in the accommodating cavity 54, and also helps to reduce the processing difficulty of the adjustment member 50 and reduce the manufacturing cost of the pen feeding mechanism 1.

[0072] In at least one embodiment, Figure 8 As shown, the slot 33 , the cavity 31 and the groove 321 on the support member 30 are interconnected, which is beneficial to reducing the difficulty of processing the support member 30 , thereby further reducing the manufacturing cost of the pen feeding mechanism 1 .

[0073] In some embodiments, Figure 1 As shown, the pen feeding mechanism 1 further includes a reset member 70, which is elastically connected to the adjusting member 50 and the fixing member 80 of the intelligent pencil sharpener 2, and the reset member 70 provides a force to drive the adjusting member 50 to move toward the supporting member 30. Specifically, as Fig.13 As shown, under the condition of being acted upon by an external force, for example, when a thicker pencil is inserted between the pen clamping assemblies 40, the pencil abuts against the pen clamping assemblies 40, and the adjusting member 50 is pushed by the pen clamping assemblies 40 to move away from the supporting member 30 in a direction parallel to the central axis C, thereby overcoming the action of the reset member 70, so that the size of the squeezing space 20 in a direction parallel to the central axis C is increased, and then the end of the squeezing space 20 away from the central axis C is also able to accommodate the pen clamping assemblies 40, so that each pen clamping assembly 40 moves radially away from the central axis C, thereby increasing the size of the pen clamping gap 10.

[0074] At the same time, the reset member 70 can provide a force to drive the adjustment member 50 to move toward the support member 30, so that the size of the squeeze space 20 has a tendency to decrease in a direction parallel to the central axis C; and the adjustment surface 53 presses against the pen clamping assembly 40, so that the pen clamping assembly 40 has a tendency to move radially toward the central axis C, so that the pencil can be reliably clamped between the pen clamping assemblies 40 to achieve the pen-in or pen-out.

[0075] Further, such as Fig.12As shown, when the external force is removed, for example, when a thicker pencil is pulled out, the reset member 70 is able to drive the adjustment member 50 to move toward the support member 30, so that the size of the extrusion space 20 in the direction parallel to the central axis C is reduced, and then the end of the extrusion space 20 away from the central axis C is difficult to accommodate the pen clamping assembly 40, and the adjustment surface 53 is able to drive the pen clamping assembly 40 to move radially toward the central axis C until the initial position, and then the size of the pen clamping gap 10 is reduced to be suitable for clamping a thinner pencil.

[0076] In at least one embodiment, the reset member 70 is implemented as a single variable diameter compression spring, the end of the variable diameter compression spring with a smaller diameter abuts against the fixing member 80 of the intelligent pencil sharpener 2, and the end of the variable diameter compression spring with a larger diameter abuts against the adjusting member 50, thereby making the contact area between the variable diameter compression spring and the adjusting member 50 larger, which is conducive to making the force distribution of the variable diameter compression spring on the adjusting member 50 more uniform, thereby further reducing the risk of the adjusting member 50 being skewed, thereby reducing the distance difference between each pen clamping assembly 40 and the central axis C, thereby improving the centering of the pencil. In addition, when the variable diameter compression spring is compressed again, the various circles do not interfere with each other, that is, the various circles of the variable diameter compression spring overlap in the height direction parallel to the central axis C, and are even compressed in a plane, which is conducive to further reducing the size of the pen feeding mechanism 1 along the direction parallel to the central axis C, thereby reducing the height of the intelligent pencil sharpener 2.

[0077] In at least one other embodiment, the reset member 70 is implemented as a plurality of compression springs, which are evenly distributed and clamped between the fixing member 80 and the adjusting member 50 of the smart pencil sharpener 2. It is worth mentioning that the reset member 70 can also be implemented as a tension spring, a torsion spring, etc. This application does not impose any specific restrictions on this.

[0078] An intelligent pencil sharpener 2, such as Figure 1 As shown, it includes: the above-mentioned pen feeding mechanism 1; a fixing member 80, the fixing member 80 has a guide bar 81 extending in a direction parallel to the central axis C; the adjusting member 50 of the pen feeding mechanism 1 also includes a main body 51, the main body 51 is provided with a guide groove 511, the guide groove 511 is installed and adapted with the guide bar 81, so that the guide bar 81 is suitable for moving along the guide groove 511, so as to guide the adjusting member 50 to move relative to the fixing member 80 in a direction parallel to the central axis C. Further, each pressing part 52 of the adjusting member 50 is connected to the main body 51, and the pressing part 52 extends from the main body 51 toward the direction where the supporting member 30 is located. It should be understood that through the adjusting member 50, each pen clamping assembly 40 is suitable for radial movement toward or away from the central axis C, and then the size of the pen clamping gap 10 is adjusted, so that the pen feeding mechanism 1 is suitable for clamping pencils of different diameters, further reducing the risk of the pencil following the rotation of the knife holder, and improving the reliability of the intelligent pencil sharpener 2.

[0079] It should be understandable that Fig.14As shown, the cooperation between the guide bar 81 and the guide groove 511 is helpful to reduce the risk of the adjusting member 50 rotating or tilting relative to the fixing member 80. Furthermore, the fixing member 80 and the supporting member 30 remain relatively fixed, which is helpful to reduce the risk of the adjusting member 50 rotating or tilting relative to the supporting member 30, and is helpful to further improve the centration of the pencil.

[0080] The above describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention to be protected. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A pen feeding mechanism, characterized in that: include: a support member, the support member defining a central axis; A plurality of pen clamping assemblies, the pen clamping assemblies are rotatably mounted on the support member, the plurality of pen clamping assemblies are arranged along the circumference of the central axis to define a pen clamping gap between the respective pen clamping assemblies, the pen clamping assemblies are adapted to move radially relative to the support member to adjust the size of the pen clamping gap, and the pen clamping assemblies include an impeller; An adjusting member connected to the pen clamping assembly to provide a force driving each of the pen clamping assemblies to move radially toward the central axis so that each of the pen clamping assemblies clamps a pencil; A worm gear is meshed with the impeller to drive the pen clamp assembly to rotate.

2. The pen feeding mechanism according to claim 1, characterized in that: The adjusting member and the supporting member are stacked in a direction parallel to the central axis, defining an extrusion space between the adjusting member and the supporting member, and the extrusion space is capable of accommodating the pen clamping assembly; the adjusting member is suitable for moving relative to the supporting member in a direction parallel to the central axis to adjust the extrusion space so that the pen clamping assembly is suitable for radial movement relative to the supporting member.

3. The pen feeding mechanism according to claim 2, characterized in that: The upper surface of the support member has a plurality of inner recesses, the inner recesses are capable of accommodating and supporting the two ends of the pen clamp assembly, the plurality of inner recesses are evenly distributed along the circumference of the central axis, so that the plurality of pen clamp assemblies are evenly distributed along the circumference of the central axis, and the inner recesses extend radially, so that the pen clamp assembly is suitable for radial movement relative to the support member; The adjusting member has a plurality of pressing parts, which protrude and extend toward the direction where the supporting member is located, so that the pressing parts are pressed against the pen clamping assembly, and the adjustable squeezing space is formed between the pressing parts and the inner concave part.

4. The pen feeding mechanism according to claim 3, characterized in that: The inner recessed portion has a guide surface on a side facing the adjusting member, the plane on which the guide surface is located is perpendicular to the central axis, the guide surface is capable of supporting and guiding the pen clamping assembly to move radially relative to the supporting member, the pressing portion has at least one adjustment surface on a side facing the supporting member, the extrusion space is formed between the adjustment surface and the guide surface, and the adjustment surface extends obliquely in a direction away from the central axis from an end close to the pen inlet of the intelligent pencil sharpener to an end away from the pen inlet of the intelligent pencil sharpener, so that the size of the extrusion space along the direction parallel to the central axis gradually decreases from the end close to the central axis to the end away from the central axis.

5. The pen feeding mechanism according to claim 4, characterized in that: The pen clamp assembly further comprises a first shaft section, a roller and a second shaft section. The first shaft section, the impeller, the roller and the second shaft section are sequentially arranged along the axial direction of the pen clamp assembly. The first shaft section and the second shaft section are respectively matched with the inner recess, so that the pen clamp assembly is mounted on the support and is suitable for radial movement relative to the support. The roller is capable of clamping the pencil to achieve advancing or retracting the pencil. Under the condition that each of the pen clamp assemblies is mounted on the support, the gear teeth of the impeller of one of the pen clamp assemblies extend to the corner of the roller and the second shaft section of another adjacent pen clamp assembly.

6. The pen feeding mechanism according to claim 5, characterized in that: The support member also has a plurality of interconnected cavities, which penetrate the support member in a direction parallel to the central axis, and are capable of accommodating the roller and the impeller. The inner recess includes two grooves, which are respectively located on opposite sides of the cavity and are connected to the cavity. The grooves are capable of accommodating and supporting the first shaft segment or the second shaft segment, and the bottom surface of the grooves forms the guide surface.

7. The pen feeding mechanism according to claim 6, characterized in that: The pressing part comprises a first pressing plate and a second pressing plate which are spaced apart from each other, at least a portion of the first pressing plate and at least a portion of the second pressing plate extend into the cavity, defining an accommodating cavity between the first pressing plate and the second pressing plate, and the accommodating cavity is capable of accommodating the roller; The adjustment surface includes a first adjustment surface and a second adjustment surface, the first adjustment surface is formed on a side of the first pressing plate facing the support member, and the first adjustment surface is suitable for abutting against the surface of the impeller, and the second adjustment surface is formed on a side of the second pressing plate facing the support member, and the second adjustment surface is suitable for abutting against the second shaft segment to provide a force driving the pen clamp assembly to move radially toward the central axis.

8. The pen feeding mechanism according to claim 7, characterized in that: The pressing part also includes a connecting plate and an inserting strip, wherein the connecting plate is capable of connecting the first pressing plate and the second pressing plate, wherein the accommodating cavity is formed among the first pressing plate, the connecting plate and the second pressing plate, and the inserting strip is protrudingly located on a side of the connecting plate away from the accommodating cavity, and the inserting strip extends in a direction parallel to the central axis; the supporting member has a slot, and the slot is installed and adapted to the inserting strip so that the inserting strip is suitable for moving along the slot to guide the adjusting member to move relative to the supporting member in a direction parallel to the central axis.

9. The pen feeding mechanism according to any one of claims 1 to 8, characterized in that: The pen feeding mechanism further comprises a reset member, which is elastically connected to the adjusting member and the fixing member of the intelligent pencil sharpener, and the reset member is capable of providing a force driving the adjusting member to move toward the supporting member.

10. An intelligent pencil sharpener, characterized in that: include: The pen feeding mechanism as claimed in any one of claims 1 to 9; A fixing member, wherein the fixing member has a guide bar extending in a direction parallel to the central axis; The adjusting member of the pen feeding mechanism also includes a main body, which is provided with a guide groove, and the guide groove is installed and adapted to the guide bar so that the guide bar is suitable for moving along the guide groove to guide the adjusting member to move relative to the fixing member in a direction parallel to the central axis, and each pressing part of the adjusting member is connected to the main body.

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