Pencil feeding mechanism and intelligent pencil sharpener thereof

Abstract

The utility model discloses a pencil feeding mechanism and an intelligent pencil sharpener thereof, and the pencil feeding mechanism comprises a fixing part, a driving part and a driving part, the adjusting assembly is connected to the fixing piece, and the adjusting assembly is suitable for rotating around the central axis relative to the fixing piece; the pen clamping modules are movably connected to the fixing part, and the pen clamping modules are arranged in the circumferential direction of the central axis so as to define pen clamping gaps between the pen clamping modules; the pencil clamping module is movably connected to the adjusting assembly, and under the condition that the pencil clamping module moves in the radial direction relative to the fixing piece, the adjusting assembly is suitable for rotating around the central axis, so that the size of the pencil clamping gap is adjusted, and the pencil feeding mechanism is suitable for clamping pencils with different diameters.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of intelligent pencil sharpener, in particular to a pencil feeding mechanism and an intelligent pencil sharpener. BACKGROUND

[0002] The intelligent pencil sharpener is a new type of stationery. Its working mode is that when the pencil is inserted into the intelligent pencil sharpener, the motor starts to work, and the cutter holder rotates to start automatic pencil sharpening, replacing the traditional hand rotation to make the cutter holder rotate to sharpen the pencil.

[0003] However, there are various types of pencils on the market, and the diameters of the pencils are not the same. The pencil feeding mechanism of the current intelligent pencil sharpener is difficult to adapt to various types of pencils. If the diameter of the pencil is large, it is easy to cause the pencil to be difficult or impossible to be inserted into the pencil feeding mechanism. SUMMARY

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

[0005] Another object of the present application is to provide an intelligent pencil sharpener with 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 objects, the technical scheme adopted by the present application is as follows: a pencil feeding mechanism, comprising: a fixed part, the fixed part defining a central axis; an adjusting assembly connected to the fixed part, the adjusting assembly being adapted to rotate relative to the fixed part about the central axis; a plurality of pencil clamping modules movably connected to the fixed part, the plurality of pencil clamping modules being arranged along the circumference of the central axis to define a pencil clamping gap between each of the pencil clamping modules; the pencil clamping module is movably connected to the adjusting assembly, under the condition that the pencil clamping module moves radially relative to the fixed part, the adjusting assembly is adapted to rotate about the central axis, so as to adjust the size of the pencil clamping gap.

[0007] As a preferred embodiment, the adjusting assembly comprises an adjusting plate and a reset part, the adjusting plate has a plurality of rotationally symmetrically distributed adjusting grooves, one end of the adjusting groove is arranged close to the central axis, the other end of the adjusting groove is arranged away from the central axis, the two ends of the adjusting groove are arranged in a circumferential direction, the pencil clamping module is connected to the adjusting groove to be adapted to slide along the adjusting groove, under the condition that the pencil clamping module moves radially away from the central axis relative to the fixed part, the pencil clamping module drives the adjusting plate to rotate relative to the fixed part about the central axis in a first direction; the reset part elastically connects the adjusting plate and the fixed part to provide a driving force for the adjusting plate to rotate about the central axis in a second direction, wherein the first direction is opposite to the second direction.

[0008] As a preferred, a virtual circle with the middle axis as the center is tangent to the imaginary line where the extending direction of the adjusting slot is located.

[0009] As a preferred, the clip module comprises clip assemblies and a support frame, the clip assemblies are rotatably connected to the support frame around their own axes, the clip gaps are formed between the clip assemblies, the support frame is movably connected to the fixing member in the radial direction, the support frame is slidably connected to the adjusting plate, under the condition that the support frame moves in the radial direction relative to the fixing member, the adjusting plate is adapted to rotate around the middle axis to adjust the size of the clip gaps.

[0010] As a preferred, the support frame comprises a main body and a fitting part connected to the main body, the main body has a receiving cavity for accommodating the clip assemblies, the fitting part protrudes from the top surface of the main body in the direction parallel to the middle axis, the fitting part extends into the adjusting slot to make the support frame slide along the adjusting slot.

[0011] As a preferred, the fixing member comprises a base and a guide part, the base has a plurality of cavities in communication, the cavities are adapted to accommodate the clip modules, the guide part protrudes from the base, the guide part extends in the radial direction of the fixing member; the main body of the support frame is provided with a guide slot, the guide slot is adapted to the guide part to make the support frame adapted to move in the radial direction relative to the fixing member.

[0012] As a preferred, the fixing member further comprises at least one guide part, the guide part protrudes from the top surface of the base in the direction parallel to the middle axis, the adjusting plate has at least one guide slot, a virtual circle with the middle axis as the center is tangent to the imaginary line where the extending direction of the guide slot is located, the guide slot is adapted to the guide part to make the adjusting plate adapted to rotate around the middle axis relative to the fixing member.

[0013] As a preferred, the clip module further comprises a worm gear, the worm gear is located below the clip module to make the clip module press-fit between the fixing member and the worm gear in the direction parallel to the middle axis; the clip assembly comprises a first shaft segment, an impeller, a roller and a second shaft segment arranged in sequence along the axial direction of the clip assembly, the first shaft segment and the second shaft segment are rotatably connected to the support frame to make the clip assembly erected on the support frame; the impeller is adapted to engage with the worm gear to drive the clip assembly to rotate.

[0014] As a preferred, along the axial direction of the roller, the roller has opposite pencil clamping ends and enlarged ends, the roller has an outer circumferential surface, the radial dimension of the outer circumferential surface gradually increases from the pencil clamping end to the enlarged end, the roller is rotationally symmetrical with respect to each pencil clamping assembly, and the outer circumferential surfaces of each roller form the pencil clamping gap; the pencil clamping assembly further comprises an elastic member, the elastic member is sleeved on the second shaft segment, and the elastic member is arranged in the axial direction of the roller, so that the elastic member is clamped in the axial direction between the pencil clamping end of the roller and the support frame, so that the roller is adapted to move in the axial direction to adjust the size of the pencil clamping gap.

[0015] To achieve at least one of the above purposes, the technical scheme adopted by the present application is: an intelligent pencil sharpener, comprising: the pencil feeding mechanism as any one of the above; a cutter holder, the cutter holder is located below the pencil feeding mechanism, and can cut a pencil; a driving assembly, the driving assembly is connected to the cutter holder, and can drive the cutter holder to rotate.

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

[0017] The pencil clamping module is adapted to move radially relative to the fixed member, thereby adjusting the size of the pencil clamping gap, so that the pencil feeding mechanism is adapted to clamp pencils of different diameters. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a perspective view of a pencil feeding mechanism according to some embodiments of the present application.

[0019] Figure 2 is an exploded view of a pencil feeding mechanism according to some embodiments of the present application.

[0020] Figure 3 is a partial perspective view of a pencil feeding mechanism according to some embodiments of the present application.

[0021] Figure 4 is a top view of the adjusting plate and the pencil clamping module of the pencil clamping gap of the pencil feeding mechanism according to some embodiments of the present application in a small size state.

[0022] Figure 5 is a top view of the fixed member and the pencil clamping module of the pencil clamping gap of the pencil feeding mechanism according to some embodiments of the present application in a small size state.

[0023] Figure 6 is a top view of the adjusting plate and the pencil clamping module of the pencil clamping gap of the pencil feeding mechanism according to some embodiments of the present application in a large size state.

[0024] Figure 7 is a top view of the fixed member and the pencil clamping module of the pencil clamping gap of the pencil feeding mechanism according to some embodiments of the present application in a large size state.

[0025] Figure 8 is a perspective view of a fixing member of a pen feeding mechanism according to some embodiments of the present application.

[0026] Figure 9 is a perspective view of a pen clamping module of a pen feeding mechanism according to some embodiments of the present application.

[0027] Figure 10 is a perspective view of a support frame of a pen feeding mechanism according to some embodiments of the present application.

[0028] Figure 11 is a perspective view of a pen clamping assembly of a pen feeding mechanism according to some embodiments of the present application.

[0029] In the drawings: 1, pen feeding mechanism; 10, fixing member; 11, base; 111, cavity; 12, guide portion; 13, guide portion; 20, adjusting assembly; 21, adjusting plate; 211, adjusting slot; 212, guide slot; 22, reset member; 30, pen clamping module; 31, pen clamping gap; 32, pen clamping assembly; 321, first shaft segment; 322, impeller; 323, roller; 3231, pen clamping end; 3232, enlarged end; 3233, outer peripheral surface; 324, second shaft segment; 325, elastic member; 33, support frame; 331, main body portion; 3311, accommodating cavity; 332, guide slot; 333, fitting portion; 40, worm gear. DETAILED DESCRIPTION

[0030] Hereinafter, the present application will be further described in conjunction with specific embodiments. It should be noted that, under the premise of no conflict, each embodiment described below or each technical feature can be combined with any other embodiment or technical feature to form a new embodiment.

[0031] In the description of the present application, it should be noted that, for orientation words, such as terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0033] The terms "comprise" and "have" and any variations thereof in the specification and claims of this application are intended to cover a non-exclusive inclusion, such that a process, method, system, product or apparatus that comprises a list of steps or units is not necessarily limited to those steps or units that are expressly listed, but can include other steps or units that are not expressly listed or inherent to such process, method, product or apparatus.

[0034] In the description of the present application, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", "join" should be understood in a broad sense, for example, can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] A pencil feeding mechanism 1, as shown in Figures 1-11 , comprises a fixed part 10, the fixed part 10 being defined with a central axis C; an adjusting assembly 20, the adjusting assembly 20 being connected to the fixed part 10, the adjusting assembly 20 being adapted to rotate relative to the fixed part 10 around the central axis C; a plurality of pencil clamping modules 30, the pencil clamping modules 30 being movably connected to the fixed part 10, the pencil clamping modules 30 being arranged along the circumference of the central axis C to define pencil clamping gaps 31 between each pencil clamping module 30; the pencil clamping modules 30 being movably connected to the adjusting assembly 20, under the condition that the pencil clamping modules 30 move radially relative to the fixed part 10, the adjusting assembly 20 is adapted to rotate around the central axis C to adjust the size of the pencil clamping gaps 31, so that the pencil feeding mechanism 1 is adapted to clamp pencils of different diameters.

[0036] In at least one embodiment, the pencil feeding mechanism 1 comprises two radially opposite pencil clamping modules 30. In another at least one embodiment, as shown in Figures 1-7 , the pencil feeding mechanism 1 comprises three pencil clamping modules 30 arranged rotationally symmetrically relative to the central axis C. It should be understood that the pencil feeding mechanism 1 can also comprise four or more pencil clamping modules 30, which are not specifically limited in the present application.

[0037] In some embodiments, as shown in Figure 1 and Figure 2As shown, the adjusting assembly 20 comprises an adjusting plate 21 and a reset member 22, the adjusting plate 21 has a plurality of rotationally symmetrically distributed adjusting grooves 211, one end of the adjusting groove 211 is arranged close to the central axis C, the other end of the adjusting groove 211 is arranged away from the central axis C, the two ends of the adjusting groove 211 are arranged in a circumferential direction, the pencil clamping module 30 is connected to the adjusting groove 211, and is adapted to slide along the adjusting groove 211, under the condition that the pencil clamping module 30 moves radially away from the central axis C relative to the fixed part 10, the pencil clamping module 30 drives the adjusting plate 21 to rotate relative to the fixed part 10 around the central axis C in the first direction P; the reset member 22 elastically connects the adjusting plate 21 and the fixed part 10, to provide a force to drive the adjusting plate 21 to rotate around the central axis C in the second direction Q, wherein the first direction P is opposite to the second direction Q.

[0038] Specifically, as shown in Figure 1 , Figure 6 and Figure 7 , under the condition of external force, for example, inserting a thicker pencil between the pencil clamping modules 30, the pencil abuts against each pencil clamping module 30, and through the cooperation of the pencil clamping module 30 and the adjusting groove 211, the adjusting plate 21 is driven to rotate around the central axis C in the first direction P, thereby overcoming the force of the reset member 22, so that each pencil clamping module 30 can move radially away from the central axis C, thereby increasing the size of the pencil clamping gap 31.

[0039] At the same time, the reset member 22 provides a force to drive the adjusting plate 21 to rotate around the central axis C in the second direction Q, so that the adjusting plate 21 has a tendency to rotate around the central axis C in the second direction Q; and through the cooperation of the adjusting groove 211 and the pencil clamping module 30, the pencil clamping module 30 has a tendency to move radially towards the central axis C, thereby reliably clamping the pencil between each pencil clamping module 30 to achieve pencil insertion or retraction.

[0040] Further, as shown in Figure 1 , Figure 4 and Figure 5 , under the condition that the external force is removed, for example, pulling out the thicker pencil, the reset member 22 drives the adjusting plate 21 to rotate around the central axis C in the second direction Q, and through the cooperation of the adjusting groove 211 and the pencil clamping module 30, the pencil clamping module 30 moves radially towards the central axis C until the initial position, thereby reducing the size of the pencil clamping gap 31 to adapt to clamping a thinner pencil.

[0041] In at least one embodiment, as shown in Figure 1 and Figure 2 , the reset member 22 is implemented as a torsion spring.

[0042] In some embodiments, as shown in Figure 3 , Figure 4 and Figure 6As shown, the virtual circle with the center axis C as the center is tangent to the imaginary line where the extension direction of the adjusting groove 211 is located. That is, the adjusting groove 211 extends along a straight line, which is conducive to reducing the processing difficulty of the adjusting groove 211, improving the processability of the adjusting plate 21, and further reducing the manufacturing cost of the pen feeding mechanism 1. It is worth mentioning that the adjusting groove 211 extends along a straight line, which is also conducive to simplifying the cooperation movement between the pen clamping module 30, the adjusting plate 21 and the fixing part 10, thereby improving the smoothness of the movement of the pen clamping module 30 and improving the reliability of the movement of the pen feeding mechanism 1.

[0043] In some embodiments, as shown in Figures 9-11 The pen clamping module 30 includes a pen clamping assembly 32 and a support frame 33, the pen clamping assembly 32 is rotatably connected to the support frame 33 about its own axis, and a pen clamping gap 31 is formed between each pen clamping assembly 32. The support frame 33 is movably connected to the fixing part 10 in the radial direction, and the support frame 33 is slidably connected to the adjusting plate 21 along the adjusting groove 211. Under the condition that the support frame 33 moves radially relative to the fixing part 10, the adjusting plate 21 is adapted to rotate about the center axis C to adjust the size of the pen clamping gap 31.

[0044] It can be understood that by the radial movement of the support frame 33 relative to the fixing part 10, the distance between each pen clamping module 30 and the center axis C is adjusted, and the size of the pen clamping gap 31 is adjusted. Further, the support frame 33 is slidably connected to the adjusting plate 21 along the adjusting groove 211, so that the force of the support frame 33 on the adjusting plate 21 drives the adjusting plate 21 to rotate about the center axis C in the first direction P. Further, under the condition that the reset part 22 drives the adjusting plate 21 to rotate about the center axis C in the second direction Q, the force of the adjusting plate 21 on the support frame 33 drives the support frame 33 to move radially towards the center axis C. That is, the forces of the fixing part 10 and the adjusting plate 21 directly act on the support frame 33, which is conducive to avoiding the influence of the forces of the fixing part 10 and the adjusting plate 21 directly acting on the pen clamping assembly 32 on the rotation of the pen clamping assembly 32, thereby making the rotation of the pen clamping assembly 32 more smooth, and avoiding the phenomenon of jamming, locking and the like of the pen clamping assembly 32, thereby improving the reliability of the pen feeding mechanism 1 during the pen feeding and pen returning operations.

[0045] In some embodiments, as shown in Figure 9 and Figure 10As shown, the supporting frame 33 comprises a main body portion 331 and a fitting portion 333 connected to the main body portion 331, the main body portion 331 has a receiving cavity 3311 for accommodating the pencil clamping assembly 32. Specifically, the pencil clamping assembly 32 is rotatably connected to the main body portion 331 and accommodated in the receiving cavity 3311, so that the pencil clamping assembly 32 and the main body portion 331 at least partially overlap in the direction parallel to the central axis C, thereby making the structure of the pencil feeding mechanism 1 more compact, which is conducive to reducing the size of the pencil feeding mechanism 1 in the direction parallel to the central axis C, and thereby reducing the height of the intelligent pencil sharpener. It is worth mentioning that the supporting frame 33 surrounds the outer periphery of the pencil clamping module 30, which can protect the pencil clamping assembly 32, and at the same time, it is conducive to avoiding interference between other parts of the intelligent pencil sharpener and the pencil clamping assembly 32, thereby improving the reliability of the pencil feeding mechanism 1.

[0046] Further, the fitting portion 333 protrudes from the top surface of the main body portion 331 in the direction parallel to the central axis C, and the fitting portion 333 extends into the adjusting groove 211 to enable the supporting frame 33 to slide along the adjusting groove 211. Specifically, the adjusting plate 21, the fixing member 10 and the pencil clamping module 30 are arranged in sequence in the direction parallel to the central axis C, and the fitting portion 333 protrudes from the top surface of the main body portion 331 to extend through the fixing member 10 and cooperate with the adjusting groove 211, thereby enabling the adjusting plate 21 to rotate relative to the fixing member 10 around the central axis C by the relative movement between the fitting portion 333 and the adjusting groove 211 under the condition that the supporting frame 33 moves radially relative to the fixing member 10.

[0047] In some embodiments, as Figure 8 shown, the fixing member 10 comprises a base portion 11 and a guide portion 12, the base portion 11 has a plurality of communicating cavities 111 for accommodating the pencil clamping module 30. That is, the pencil clamping module 30 and the fixing member 10 at least partially overlap in the direction parallel to the central axis C, thereby making the structure of the pencil feeding mechanism 1 more compact, which is conducive to reducing the size of the pencil feeding mechanism 1 in the direction parallel to the central axis C, and thereby reducing the height of the intelligent pencil sharpener. It is worth mentioning that the fixing member 10 surrounds the outer periphery of the pencil clamping module 30, which can protect the supporting frame 33 and the pencil clamping assembly 32, and at the same time, it is conducive to avoiding interference between other parts of the intelligent pencil sharpener and the pencil clamping assembly 32, thereby improving the reliability of the pencil feeding mechanism 1.

[0048] Further, as Figure 8 and Figure 9 shown, the guide portion 12 protrudes and is connected to the base portion 11, and the guide portion 12 extends in the radial direction of the fixing member 10; the main body portion 331 of the supporting frame 33 is provided with a guide groove 332, which is installed and matched with the guide portion 12, so that the supporting frame 33 is adapted to move radially relative to the fixing member 10, thereby adjusting the size of the pencil clamping gap 31.

[0049] In at least one embodiment, each of the two inner side walls of the cavity 111 has a guide portion 12, each of the two outer side walls of the support frame 33 has a guide groove 332, and the two guide portions 12 and the two guide grooves 332 are respectively and adaptively mounted. That is, the support frame 33 is connected to the fixing member 10 in a pull-out type structure, which is advantageous to improve the reliability of the cooperation movement of the support frame 33 and the fixing member 10, and to make the distribution of the interaction force of the support frame 33 and the fixing member 10 on the support frame 33 and on the fixing member 10 more uniform, which is advantageous to balance the force of the support frame 33 and to prolong the service life of the support frame 33.

[0050] In some embodiments, as shown in Figure 2 The fixing member 10 further includes at least one guide portion 13 protruding from the top surface of the base 11 in a direction parallel to the central axis C, and the adjusting plate 21 has at least one guide groove 212. The virtual circle with the central axis C as the center coincides with the imaginary line in the extension direction of the guide groove 212, that is, the guide groove 212 extends along the virtual circle with the central axis C as the center, and the guide groove 212 and the guide portion 13 are adaptively mounted to make the adjusting plate 21 suitable for rotating around the central axis C relative to the fixing member 10.

[0051] In at least one embodiment, the adjusting plate 21 has three circumferentially distributed guide grooves 212, and the imaginary lines in the extension directions of the three guide grooves 212 are concentric. Correspondingly, the fixing member 10 has three guide portions 13, which are adaptively mounted with the three guide grooves 212 of the adjusting plate 21, respectively. It can be understood that through the cooperation of multiple pairs of guide grooves 212 and guide portions 13, the reliability of the cooperation movement of the adjusting plate 21 and the fixing member 10 is improved, and the distribution of the interaction force of the adjusting plate 21 and the fixing member 10 on the adjusting plate 21 and on the fixing member 10 is more uniform, which is advantageous to balance the force of the adjusting plate 21 and to prolong the service life of the adjusting plate 21.

[0052] It is worth mentioning that the cooperation of the plurality of pairs of guide grooves 212 and guide portions 13 is also conducive to improving the coaxiality of the adjusting plate 21 and the fixing member 10 during installation and cooperation of the rotating movement, that is, conducive to making the center of the adjusting plate 21 coincide or tend to coincide with the central axis C. Further, each pencil clamping module 30 is connected to the adjusting plate 21, and the distance between the pencil clamping module 30 and the central axis C is controlled by the adjusting groove 211 on the adjusting plate 21, so that under the condition that the center of the adjusting plate 21 is closer to the central axis C, the distance difference between each pencil clamping module 30 and the central axis C is smaller, so that the center of the pencil clamping gap 31 coincides or tends to coincide with the central axis C. Further, each adjusting groove 211 is rotationally symmetrically distributed on the adjusting plate 21, which is conducive to synchronously moving each pencil clamping module 30 radially towards or away from the central axis C, and is conducive to further reducing the distance difference between each pencil clamping module 30 and the central axis C.

[0053] It can be understood that the fixing member 10 is fixed to the intelligent pencil sharpener, the central axis C of the fixing member 10 coincides or tends to coincide with the rotation center of the knife holder of the intelligent pencil sharpener, and the center of the pencil clamping gap 31 is closer to the rotation center of the knife holder, that is, the center line of the pencil is closer to the rotation center of the knife holder, which is conducive to reducing the risk of the lead core breaking due to uneven force during cutting, and improving the centering of the pencil.

[0054] In some embodiments, as shown in Figure 2 and Figure 3 The pencil feeding mechanism 1 further comprises a worm gear 40 located below the pencil clamping module 30, so that the pencil clamping module 30 is pressed between the fixing member 10 and the worm gear 40 in a direction parallel to the central axis C; as shown in Figure 9 and Figure 11 The pencil clamping assembly 32 comprises a first shaft segment 321, an impeller 322, a roller 323 and a second shaft segment 324 arranged in sequence along the axial direction of the pencil clamping assembly 32, the first shaft segment 321 and the second shaft segment 324 are rotatably connected to the support frame 33, so that the pencil clamping assembly 32 is supported on the support frame 33; the impeller 322 is engaged with the worm gear 40 to drive the pencil clamping assembly 32 to rotate.

[0055] It can be understood that each pencil clamping assembly 32 is rotationally symmetrically arranged relative to the central axis C, which is conducive to avoiding interference between the impellers 322 of the adjacent two pencil clamping assemblies 32, that is, the roller 323 and the impeller 322 are alternately arranged in the circumferential direction, which is conducive to uniformly distributing the impellers 322 of each pencil clamping assembly 32 in the circumferential direction, making the distribution of the force of each impeller 322 on the worm gear 40 more uniform, which is conducive to balancing the force on the worm gear 40, prolonging the service life of the worm gear 40, and improving the reliability of the engagement transmission between the worm gear 40 and each impeller 322.

[0056] It is worth mentioning that, compared with the impeller 322 being arranged close to the end of the pencil clip assembly 32 along the axial direction, in the embodiment, as shown in Figure 11 the impeller 322 is arranged close to the middle of the pencil clip assembly 32 along the axial direction, which is beneficial to reduce the torsional deformation of the first shaft section 321 and the second shaft section 324 due to the torque and the bending deformation due to the bending moment, so that the load distribution of the pencil clip assembly 32 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 322 during meshing transmission, thereby reducing the noise during meshing transmission of the impeller 322 and the worm wheel 40, and prolonging the service life of the impeller 322 and the worm wheel 40.

[0057] In some embodiments, as shown in Figure 9 and Figure 11 along the axial direction of the roller 323, the roller 323 has opposite pencil clip ends 3231 and enlarged ends 3232, and the roller 323 has an outer peripheral surface 3233, the radial dimension of the outer peripheral surface 3233 gradually increases from the pencil clip end 3231 to the enlarged end 3232, and each pencil clip assembly 32 is rotationally symmetrically arranged, and the outer peripheral surfaces 3233 of each roller 323 form a pencil clip gap 31.

[0058] It can be understood that, compared with the equal-diameter roller 323, in the embodiment, the pencil clip end 3231 and the enlarged end 3232 of each roller 323 are rotationally symmetrically arranged relative to the central axis C, and then on the basis that each roller 323 can provide a clamping force to the pencil along the radial direction of the fixing member 10, each roller 323 can also provide an acting force to the pencil along the tangent direction of the virtual circle with the central axis C as the center, which is beneficial to reduce the risk of the pencil being skewed relative to the fixing member 10, and further improve the centering of the pencil.

[0059] Further, as shown in Figure 9 and Figure 11 the pencil clip assembly 32 further comprises a resilient member 325, the resilient member 325 is sleeved on the second shaft section 324, and the resilient member 325 is arranged along the axial direction of the roller 323, so that the resilient member 325 is clamped between the pencil clip end 3231 of the roller 323 and the support frame 33 along the axial direction, so that the roller 323 is adapted to move along the axial direction to adjust the size of the pencil clip gap 31. It can be understood that the enlarged end 3232 of the roller 323 is arranged adjacent to the impeller 322, and the pencil clip end 3231 of the roller 323 is arranged away from the impeller 322, so that the resilient member 325 is clamped between the pencil clip end 3231 and the support frame 33 along the axial direction.

[0060] Specifically, under the condition of external force, for example, when the pencil rotates with the knife rest, the friction between the pencil and the roller 323 along the axial direction of the roller 323 overcomes the force of the elastic member 325, so that each roller 323 moves along the axial direction thereof to the side where the pencil clamping end 3231 is located, that is, the gap between the pencil clamping end 3231 of the roller 323 and the main body part 331 of the support frame 33 is reduced, and then the enlarged end 3232 of each roller 323 gradually approaches, so as to reduce the size of the pencil clamping gap 31, so that the pencil clamping assembly 32 clamps the pencil, so as to prevent the pencil from continuing to rotate with the knife rest, which is beneficial to avoid the need for the user to manually hold the pencil tightly to prevent the pencil from rotating with the knife rest, and improves the convenience of using the intelligent pencil sharpener. Further, under the condition that the external force is removed, for example, when the knife rest stops rotating, the force of the elastic member 325 enables each roller 323 to move along the axial direction thereof to the side where the enlarged end 3232 is located until the initial position, that is, the gap between the pencil clamping end 3231 of the roller 323 and the main body part 331 of the support frame 33 is increased, and then the enlarged end 3232 of each roller 323 gradually moves away, so as to increase the size of the pencil clamping gap 31, so as to facilitate the pencil to be taken out more easily.

[0061] In at least one embodiment, the elastic member 325 is implemented as a compression spring.

[0062] An intelligent pencil sharpener, comprising: the pencil feeding mechanism 1 described above; a knife rest, which is located below the pencil feeding mechanism 1 and is capable of cutting a pencil; and a driving assembly connected to the knife rest and capable of driving the knife rest to rotate. It should be understood that by adjusting the cooperation between the adjusting assembly 20 and the fixing member 10, each pencil clamping module 30 is adapted to move radially towards or away from the central axis C relative to the fixing member 10, and then the size of the pencil clamping gap 31 is adjusted, so that the pencil feeding mechanism 1 is adapted to clamp pencils of different diameters. Further, by means of the elastic member 325, the rollers 323 of each pencil clamping assembly 32 are adapted to move along the axial direction thereof, and then the size of the pencil clamping gap 31 is fine-tuned during pencil sharpening, further reducing the risk of the pencil rotating with the knife rest, and improving the reliability of the intelligent pencil sharpener.

[0063] 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 embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A pen feed mechanism characterized by comprising: The utility model relates to a pen holder, comprising: a fixing part defining a middle axis; an adjusting assembly connected to the fixing part, the adjusting assembly being adapted to rotate about the middle axis relative to the fixing part; a plurality of pen holding modules movably connected to the fixing part, the pen holding modules being arranged along a circumference of the middle axis to define a pen holding gap between each of the pen holding modules, the pen holding modules being movably connected to the adjusting assembly, the adjusting assembly being adapted to rotate about the middle axis under the condition that the pen holding modules move radially relative to the fixing part, so as to adjust a size of the pen holding gap.

2. The pen delivery mechanism according to claim 1, characterized by The adjusting assembly comprises an adjusting plate and a reset part, the adjusting plate having a plurality of rotationally symmetrically arranged adjusting grooves, one end of the adjusting grooves being arranged close to the middle axis, the other end of the adjusting grooves being arranged away from the middle axis, the two ends of the adjusting grooves being arranged in a circumferential direction, the pen holding modules being connected to the adjusting grooves to be adapted to slide along the adjusting grooves, the pen holding modules being able to drive the adjusting plate to rotate about the middle axis in a first direction relative to the fixing part under the condition that the pen holding modules move radially away from the middle axis relative to the fixing part; the reset part elastically connecting the adjusting plate and the fixing part to provide a driving force for driving the adjusting plate to rotate about the middle axis in a second direction, wherein the first direction is opposite to the second direction.

3. The pen delivery mechanism of claim 2, wherein A virtual circle with the middle axis as a center is tangent to an imaginary line in which an extension direction of the adjusting grooves lies.

4. The pen delivery mechanism of claim 2, wherein The pen holding module comprises a pen holding assembly and a support frame, the pen holding assembly being rotatably connected to the support frame about an axis of the pen holding assembly, the pen holding gap being formed between each of the pen holding assemblies, the support frame being movably connected to the fixing part in a radial direction, the support frame being slidably connected to the adjusting plate along the adjusting grooves, the adjusting plate being adapted to rotate about the middle axis under the condition that the support frame moves radially relative to the fixing part, so as to adjust the size of the pen holding gap.

5. The pen delivery mechanism of claim 4, wherein The support frame comprises a main body and a fitting part connected to the main body, the main body having a receiving cavity for accommodating the pen holding assembly, the fitting part protruding from a top surface of the main body in a direction parallel to the middle axis, the fitting part extending into the adjusting grooves to enable the support frame to slide along the adjusting grooves.

6. The pen delivery mechanism of claim 5, wherein The fixing part comprises a base and a guide part, the base having a plurality of cavities in communication, the cavities being able to accommodate the pen holding modules, the guide part protrusively connected to the base, the guide part extending in a radial direction of the fixing part; the main body of the support frame being provided with a guide groove, the guide groove being adapted to the guide part to enable the support frame to move radially relative to the fixing part.

7. The pen delivery mechanism of claim 6, wherein The fixing part further comprises at least one guide part protruding from a top surface of the base in a direction parallel to the middle axis, the adjusting plate having at least one guide groove, a virtual circle with the middle axis as a center being coincident with an imaginary line in which an extension direction of the guide groove lies, the guide groove being adapted to the guide part to enable the adjusting plate to rotate about the middle axis relative to the fixing part.

8. A pen delivery mechanism according to any one of claims 4-7, characterized in that The pencil feeding mechanism further comprises a worm gear, which is located below the pencil clamping module to press the pencil clamping module between the fixing member and the worm gear along a direction parallel to the central axis; The pencil clamping assembly comprises a first shaft segment, an impeller, a roller and a second shaft segment arranged in sequence along an axial direction of the pencil clamping assembly, the first shaft segment and the second shaft segment are rotatably connected to the support frame to enable the pencil clamping assembly to be erected on the support frame, the impeller is engaged with the worm gear to drive the pencil clamping assembly to rotate.

9. The pen delivery mechanism of claim 8, wherein Along the axial direction of the roller, the roller has opposite pencil clamping ends and enlarged ends, the roller has an outer circumferential surface, the radial dimension of the outer circumferential surface gradually increases from the pencil clamping end to the enlarged end, the rollers of the pencil clamping assemblies are rotationally symmetrically arranged, and the outer circumferential surfaces of the rollers form the pencil clamping gaps therebetween. The pencil clamping assembly further comprises an elastic member, the elastic member is sleeved on the second shaft segment, and the elastic member and the roller are arranged along the axial direction to enable the elastic member to be clamped between the pencil clamping end of the roller and the support frame along the axial direction, so that the roller is adapted to move along the axial direction to adjust the size of the pencil clamping gap.

10. A smart pencil sharpener, characterized by, Comprise: The pencil feeding mechanism according to any one of claims 1-9; A cutter holder located below the pencil feeding mechanism to cut the pencil; A driving assembly connected to the cutter holder to drive the cutter holder to rotate.

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