Intelligent pencil sharpener
Patent Information
- Application Number
- CN202422917126.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-27
Smart Images
Figure CN223478638U_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of intelligent pencil sharpeners, and more specifically, to an intelligent pencil sharpener. Background Technology
[0002] A smart pencil sharpener is a new type of stationery. It works by activating a motor when a pencil is inserted, causing the blade holder to rotate and automatically sharpen the pencil, replacing the traditional hand-cranked sharpener.
[0003] However, there are many different types of pencils on the market, and their diameters vary. Currently, the feeding mechanism of smart pencil sharpeners is not compatible with the wide variety of pencils. If the pencil has a large diameter, it may be difficult to insert the pencil into the feeding mechanism or it may not be able to be inserted at all. Summary of the Invention
[0004] One object of the present invention is to provide an intelligent pencil sharpener suitable for cutting pencils of different diameters.
[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an intelligent pencil sharpener, comprising a fixing member and a pencil feeding mechanism mounted on the fixing member, the pencil feeding mechanism comprising: a support member defining a central axis; a plurality of pencil clamping assemblies rotatably mounted on the support member, the plurality of pencil clamping assemblies being arranged circumferentially along the central axis to define a pencil clamping gap between each of the pencil clamping assemblies, the pencil clamping assemblies being adapted to move radially relative to the support member to adjust the size of the pencil clamping gap; and an adjusting member connected to the pencil clamping assemblies to provide a force driving each of the pencil clamping assemblies to move radially toward the central axis, so that each of the pencil clamping assemblies clamps a pencil.
[0006] As a preferred embodiment, the adjusting member and the supporting member are stacked in a direction parallel to the central axis. The upper surface of the supporting member has a plurality of recesses that accommodate and support both ends of the pen clamping assembly. The recesses extend radially, allowing the pen clamping assembly to move radially relative to the supporting member. The adjusting member has a main body and a plurality of pressing portions that extend from the main body toward the supporting member, so that the pressing portions press against the pen clamping assembly. A compression space is defined between the pressing portions and the recesses. The adjusting member is adapted to move relative to the supporting member in a direction parallel to the central axis to adjust the compression space.
[0007] As a preferred embodiment, the pen clamping assembly includes a first shaft segment, an impeller, a roller, and a second shaft segment arranged sequentially along the axial direction of the pen clamping assembly. The first shaft segment and the second shaft segment are respectively engaged with the recessed portion so that the pen clamping assembly is mounted on the support member and is adapted to move radially relative to the support member. The roller clamps the pencil to realize the feeding or retraction of the pencil. The pen feeding mechanism also includes a worm gear, which meshes with the impeller to drive the pen clamping assembly to rotate.
[0008] As a preferred embodiment, with each of the pen clamping assemblies mounted on the support, the impeller teeth of one pen clamping assembly extend to the corner of the roller and the second shaft segment of another adjacent pen clamping assembly.
[0009] As a preferred embodiment, the pen feeding mechanism further includes a reset member that elastically connects the adjusting member and the fixing member, and the reset member provides a force that drives the adjusting member to move toward the support member.
[0010] As a preferred embodiment, the concave portion has a guide surface on the side facing the adjusting member, the plane of which the guide surface is perpendicular to the central axis, the guide surface supporting and guiding the pen clamping assembly to move radially relative to the supporting member, the pressing portion having at least one adjusting surface on the side facing the supporting member, the pressing surface and the guide surface forming the compression space, the adjusting surface extending obliquely away from the central axis from the end near the intelligent pencil sharpener inlet to the end away from the intelligent pencil sharpener inlet, so that the size of the compression space gradually decreases along the direction parallel to the central axis from the end near the central axis to the end away from the central axis.
[0011] As a preferred embodiment, the support member also has several communicating cavities that extend through the support member in a direction parallel to the central axis. The cavities accommodate the roller and the impeller. The recessed portion includes two grooves located on opposite sides of the cavity and communicating with the cavity. The grooves accommodate and support the first shaft segment or the second shaft segment. The bottom surface of the groove forms the guide surface.
[0012] As a preferred embodiment, the pressing portion includes a first pressing plate, a second pressing plate, and a connecting plate 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. The connecting plate connects the first pressing plate and the second pressing plate, defining a receiving cavity between the first pressing plate, the second pressing plate, and the connecting plate, which accommodates the roller. The adjusting surface includes a first adjusting surface and a second adjusting surface. The first adjusting surface is formed on the side of the first pressing plate facing the support member and is adapted to abut against the surface of the impeller. The second adjusting surface is formed on the side of the second pressing plate facing the support member and is adapted to abut against the second shaft segment to provide a force driving the pen clamp assembly to move radially toward the central axis.
[0013] As a preferred embodiment, the pressing portion of the adjusting member further includes a strip protruding from the connecting plate on the side opposite to the receiving cavity, the strip extending in a direction parallel to the central axis; the support member has a slot that is fitted to the strip so that the strip is adapted to move along the slot to guide the adjusting member to move relative to the support member in a direction parallel to the central axis.
[0014] As a preferred embodiment, the main body of the adjusting member is provided with a guide groove, and the fixing member has a guide bar extending in a direction parallel to the central axis. The guide bar is installed and adapted to the guide groove 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.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] The pen clamping assembly is adapted to move radially relative to the support, thereby adjusting the size of the pen clamping gap so that the pen feeding mechanism can clamp 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 achieve pen feeding or retraction. Attached Figure Description
[0017] Figure 1 This is an exploded view of the internal structure of a smart pencil sharpener according to some embodiments of this application.
[0018] Figure 2 This is a top view of a pen feeding mechanism according to some embodiments of this application.
[0019] Figure 3 This is a three-dimensional structural diagram of a pen feeding mechanism according to some embodiments of this application.
[0020] Figure 4This is a top view of the pen-clamping assembly and worm gear of a pen-feeding mechanism according to some embodiments of this application.
[0021] Figure 5 This is a cross-sectional view of a pen feeding mechanism according to some embodiments of this application.
[0022] Figure 6 This is a perspective structural diagram of the pen clamping assembly of a pen feeding mechanism according to some embodiments of this application.
[0023] Figure 7 This is an exploded view of the pen clamping assembly of a pen feeding mechanism according to some embodiments of this application.
[0024] Figure 8 This is a perspective structural diagram of the support member of the pen feeding mechanism according to some embodiments of this application.
[0025] Figure 9 This is a perspective structural diagram of the adjusting member of the pen feeding mechanism according to some embodiments of this application.
[0026] Figure 10 This is a cross-sectional view of the support and adjustment members of a pen feeding mechanism according to some embodiments of this application.
[0027] Figure 11 This is a cross-sectional view of the support and adjustment members of a pen feeding mechanism according to some embodiments of this application.
[0028] Figure 12 This is a cross-sectional view of the pen clamping gap of a pen feeding mechanism according to some embodiments of this application in a small-size state.
[0029] Figure 13 This is a cross-sectional view of the pen clamping gap of a pen feeding mechanism according to some embodiments of this application in a large-size state.
[0030] Figure 14 This is a cross-sectional view of the adjustment member and fixing member of an intelligent pencil sharpener according to some embodiments of this application.
[0031] In the diagram: 1. Pen feeding mechanism; 10. Pen clamping gap; 20. Extrusion space; 30. Support component; 31. Cavity; 32. Recess; 321. Groove; 322. Guide surface; 33. Slot; 40. Pen clamping assembly; 41. First mating component; 411. Second shaft section; 412. Positioning section; 42. Roller; 43. Second mating component; 431. Connecting section; 432. Mounting section; 433. Impeller; 434. First shaft section ; 435, protrusion; 44, corner; 50, adjusting component; 51, main body; 511, guide groove; 52, pressing part; 521, first pressing plate; 522, second pressing plate; 523, connecting plate; 524, insert; 53, adjusting surface; 531, first adjusting surface; 532, second adjusting surface; 54, receiving cavity; 60, worm gear; 70, resetting component; 2, intelligent pencil sharpener; 80, fixing component; 81, guide bar. Detailed Implementation
[0032] The present invention will now be further described in conjunction with specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0033] In the description of this invention, it should be noted that directional terms such as "center," "lateral," "longitudinal," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this invention.
[0034] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0035] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.
[0036] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection, a contact connection, or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0037] A pen feeding mechanism 1, such as Figures 1-14 As shown, the device includes a support member 30, several 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 assemblies 40 are rotatably mounted on the support member 30. The several pen-clamping assemblies 40 are arranged circumferentially along the central axis C to define a pen-clamping gap 10 between each pen-clamping assembly 40. The pen-clamping assemblies 40 are adapted to move radially relative to the support member 30 to adjust the size of the pen-clamping gap 10 so that the pen feeding mechanism 1 can be adapted to clamp 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 to provide a force that drives each pen-clamping assembly 40 to move radially toward the central axis C, so that each pen-clamping assembly 40 clamps a pencil, realizing pen feeding or retraction. The worm gear 60 can mesh with the impeller 433 of the pen-clamping assembly 40 to drive the pen-clamping assembly 40 to rotate.
[0038] Specifically, under the influence of external force, such as when a thicker pencil is inserted between the pencil clamping components 40, the force of the adjusting member 50 is overcome, causing each pencil clamping component 40 to move radially away from the central axis C, thereby increasing the size of the clamping gap 10. Simultaneously, the force of the adjusting member 50 also causes each pencil clamping component 40 to tend to move radially toward the central axis C, thus reliably clamping the pencil between the components 40 for insertion or removal. Furthermore, when the external force is removed, such as when the thicker pencil is pulled out, the force of the adjusting member 50 causes each pencil clamping component 40 to move radially toward the central axis C back to its initial position, thereby reducing the size of the clamping gap 10 to accommodate a thinner pencil.
[0039] It is worth mentioning that the radial movement includes the pen clamping assembly 40 moving along the diameter of a virtual circle centered on the central axis C, and also includes the pen clamping assembly 40 moving along the tangential direction of the virtual circle centered on the central axis C.
[0040] In at least one embodiment, the pen feeding mechanism 1 includes two pen clamping assemblies 40 arranged radially opposite each other. In at least another embodiment, such as Figure 1-Figure 4As shown, the pen feeding mechanism 1 includes three pen clamping assemblies 40 arranged circumferentially and rotationally symmetrically. 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 arranged asymmetrically, symmetrically, or rotationally symmetrically. This application does not impose any specific limitations on this.
[0041] In some embodiments, as Figure 1 , Figure 5 Figure 10 and Figure 11 As shown, the adjusting member 50 and the supporting member 30 are stacked in a direction parallel to the central axis C, defining the compression space 20 between the adjusting member 50 and the supporting member 30. The compression space 20 can accommodate the pen clamping assembly 40. The adjusting member 50 is adapted to move relative to the supporting member 30 in a direction parallel to the central axis C to adjust the compression space 20, so that the pen clamping assembly 40 is adapted to move radially relative to the supporting member 30.
[0042] In other words, by moving the adjusting member 50 relative to the support member 30 in a direction parallel to the central axis C, the compression space 20 can be adjusted. For example, the compression space 20 can be adapted to contract or expand radially; or, for example, the compression space 20 can be adapted to move radially; or, for example, the compression space 20 can be adapted to extend spirally around the central axis C. Furthermore, the pen clamping assembly 40 is clamped between the adjusting member 50 and the support member 30, and the pen clamping assembly 40 is accommodated in the compression space 20 between the adjusting member 50 and the support member 30. By adjusting the compression space 20, the position of the pen clamping assembly 40 or the range of motion of the pen clamping assembly 40 can be adjusted, thereby adjusting the radial distance between the pen clamping assembly 40 and the central axis C, that is, adjusting the size of the pen clamping gap 10 between each pen clamping assembly 40, so that the pen feeding mechanism 1 can be adapted to clamp pencils of different thicknesses.
[0043] It is worth mentioning that, compared to other engagement methods such as rotation, rolling, meshing, and compound motion, in this embodiment, the adjusting member 50 moves relative to the support member 30 in a direction parallel to the central axis C to adjust the compression space 20. That is, the adjusting member 50 translates in a straight line, which simplifies the engagement between the adjusting member 50 and the support member 30, helps reduce intermediate transmission, and improves the reliability of the engagement movement between the adjusting member 50 and the support member 30. In other words, the pen clamping assembly 40 can be adapted to move radially through a relatively simple engagement movement method.
[0044] In some embodiments, as Figure 5 and Figure 8As shown, the upper surface of the support member 30 has a plurality of recesses 32, which accommodate and support both ends of the pen clamping assembly 40. The recesses 32 are evenly distributed circumferentially along the central axis C, so that the pen clamping assemblies 40 are evenly distributed circumferentially along the central axis C. The recesses 32 extend radially, allowing the pen clamping assembly 40 to move radially relative to the support member 30. Figure 9 As shown, the adjusting member 50 has a plurality of pressing portions 52, which protrude and extend toward the direction of the support member 30 so that the pressing portions 52 press against the pen clamping assembly 40, and an adjustable compression space 20 is formed between the pressing portions 52 and the recessed portions 32.
[0045] It should be understood that the support member 30 is clamped between the recess 32 and the pressing part 52. Specifically, the recess 32 supports the pen clamping assembly 40, allowing the pen clamping assembly 40 to be rotatably mounted on the support member 30, and the recess 32 guides the pen clamping assembly 40 to move radially, thereby adjusting the size of the pen clamping gap 10 between the individual pen clamping assemblies 40. The pressing part 52 presses against the pen clamping assembly 40, providing a force that drives the pen clamping assembly 40 to move radially toward the central axis C, so that the pen clamping assembly 40 reliably clamps the pencil.
[0046] It is worth mentioning that by moving the adjusting member 50 relative to the support member 30 in a direction parallel to the central axis C, the compression space 20 between the recessed portion 32 and the pressing portion 52 can be adjusted, making the pen clamping assembly 40 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 can hold the pencil. In other words, the function of the pen clamping assembly 40 being suitable for radial movement and holding the pencil can be achieved through a relatively simple cooperative movement between the adjusting member 50 and the support member 30. This helps to avoid adding extra parts, thereby simplifying the structure and transmission of the pen feeding mechanism 1, 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 its volume. In addition, it also helps to reduce the manufacturing cost of the pen feeding mechanism 1.
[0047] In some embodiments, as Figures 8-11 As shown, the concave portion 32 has a guide surface 322 on the side facing the adjusting member 50. The plane of the guide surface 322 is perpendicular to the central axis C. The guide surface 322 supports and guides the pen clamping assembly 40 to move radially relative to the supporting member 30. The pressing portion 52 has at least one adjusting surface 53 on the side facing the supporting member 30. A compression space 20 is formed between the adjusting surface 53 and the guide surface 322. From the end near the pen inlet of the smart pencil sharpener 2 to the end away from the pen inlet of the smart pencil sharpener 2, the adjusting surface 53 extends obliquely in a direction away from the central axis C, so that the size of the compression space 20 gradually decreases in the direction parallel to the central axis C from the end near the central axis C to the end away from the central axis C.
[0048] It can be understood that the plane where the guide surface 322 of the concave portion 32 is located is set perpendicular to the central axis C, which is beneficial to ensure that the pen clamping assembly 40 only has rotation and radial movement, that is, it is beneficial to avoid the pen clamping assembly 40 having movement in the direction parallel to the central axis C, thereby simplifying the movement of the pen clamping assembly 40 and improving the reliability of the movement of the pen clamping assembly 40.
[0049] It is worth mentioning that the worm gear 60 is located below each pen clamping assembly 40, thus enabling it to mesh with each pen clamping assembly 40. Under the condition that the pen clamping assembly 40 does not move in the 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 is kept fixed. In other words, it helps to avoid the need for the worm gear 60 to move in the direction of the central axis C in order to maintain meshing with the pen clamping assembly 40. This allows the heights of the pen clamping assembly 40 and the worm gear 60 in the intelligent pencil sharpener 2 along the central axis C to remain fixed, i.e., the distance between the pen clamping assembly 40 and the worm gear 60 remains stable. This helps 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 simplifies the structure and transmission of the pen feeding mechanism 1.
[0050] Furthermore, as described above, the adjusting surface 53 of the pressing part 52 extends obliquely, such that the dimension of the pressing space 20 in the direction parallel to the central axis C gradually decreases from the end near the central axis C to the end away from the central axis C. It should be understood that the adjusting surface 53 presses against the pen clamping assembly 40, i.e., the pen clamping assembly 40 is clamped between the guide surface 322 and the adjusting surface 53. With the adjusting member 50 in the initial position, the dimension of the pressing space 20 in the direction parallel to the central axis C is larger at the end near the central axis C, thus accommodating the pen clamping assembly 40; the dimension of the pressing space 20 in the direction parallel to the central axis C is smaller at the end away from the central axis C, thus not accommodating the pen clamping assembly 40. This allows the pen clamping assembly 40 to be held in a radially close position to the central axis C, i.e., the dimension of the pen clamping gap 10 is smaller. When the adjusting member 50 moves relative to the support member 30 in a direction parallel to the central axis C, the dimension between the guide surface 322 and the adjusting surface 53 in the direction parallel to the central axis C increases. That is, the dimension of the extrusion space 20 near the central axis C increases in the direction parallel to the central axis C, and the dimension of the extrusion space 20 away from the central axis C also increases in the direction parallel to the central axis C, so that the pen clamping assembly 40 can be accommodated. This makes the pen clamping assembly 40 suitable for radial movement away from the central axis C, thereby increasing the dimension of the pen clamping gap 10.
[0051] Specifically, such as Figure 13As shown, under the condition of being subjected to external force, such as when a thicker pencil is inserted between the pencil clamping assemblies 40, the adjusting member 50 can move away from the support member 30 in a direction parallel to the central axis C, so that the size of the pressing space 20 in the direction parallel to the central axis C increases, and the end of the pressing space 20 away from the central axis C can also accommodate the pencil clamping assembly 40, so that each pencil clamping assembly 40 is suitable for radial movement away from the central axis C, thereby increasing the size of the pencil clamping gap 10.
[0052] At the same time, the adjusting member 50 tends to move toward the support member 30 in a direction parallel to the central axis C, so that the size of the compression space 20 tends to decrease in the direction parallel to the central axis C; and the adjusting surface 53 presses against the pen clamping assembly 40, thereby providing a force to drive the pen clamping assembly 40 to move radially toward the central axis C, so that the pen clamping assembly 40 tends to move radially toward the central axis C, thereby enabling the pencil to be reliably clamped between the various pen clamping assemblies 40 to achieve pen insertion or retraction.
[0053] Further, such as Figure 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 support member 30 in a direction parallel to the central axis C, so that the size of the squeezing space 20 in the direction parallel to the central axis C is reduced. As a result, the end of the squeezing space 20 away from the central axis C can hardly accommodate the pencil clamping assembly 40. Furthermore, the adjusting surface 53 can drive the pencil clamping assembly 40 to 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.
[0054] In some embodiments, from the end near the inlet of the smart pencil sharpener 2 to the end away from the inlet, the guide surface 322 extends obliquely towards the central axis C, and the plane containing the adjusting surface 53 is perpendicular to the central axis C. A compression space 20 is formed between the guide surface 322 and the adjusting surface 53, so that the size of the compression space 20 gradually decreases along the direction parallel to the central axis C from the end near the central axis C to the end away from the central axis C. In some other embodiments, from the end near the inlet of the smart pencil sharpener 2 to the end away from the inlet, the guide surface 322 extends obliquely towards the central axis C, and the adjusting surface 53 extends obliquely away from the central axis C, so that the size of the compression space 20 gradually decreases along the direction parallel to the central axis C from the end near the central axis C to the end away from the central axis C. This application does not impose specific limitations on this.
[0055] In some embodiments, as Figure 3 and Figure 6As shown, the pen clamping assembly 40 also includes a first shaft segment 434, a roller 42, and a second shaft segment 411. The first shaft segment 434, impeller 433, roller 42, and second shaft segment 411 are arranged sequentially along the axial direction of the pen clamping assembly 40. Specifically, the first shaft segment 434 and the second shaft segment 411 are respectively engaged with the recessed portion 32 so that the pen clamping 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 clamping assembly 40 can clamp the pencil to realize the insertion or withdrawal of the pencil. Furthermore, with each pen clamping assembly 40 mounted on the support member 30, the teeth of the impeller 433 of one pen clamping assembly 40 extend to the corner 44 of the roller 42 and the second shaft section 411 of another adjacent pen clamping assembly 40. This makes the arrangement of each pen clamping assembly 40 more compact. While ensuring stable meshing between the impeller 433 of the pen clamping assembly 40 and the worm gear 60, it is beneficial to reduce the overall size of the pen feeding mechanism 1.
[0056] It should be understood that the radial dimension of roller 42 is larger than the radial dimension of the second shaft section 411, defining the corner 44 between the second shaft section 411 of roller 42. Furthermore, the maximum radial dimension of the impeller teeth 433 is larger than the radial dimension of roller 42, thus helping to avoid interference between roller 42 and worm gear 60 when the impeller teeth 433 mesh with the worm gear 60. Even further, the rotational symmetry of each pen-clamping assembly 40 relative to the central axis C helps to avoid interference caused by the impellers 433 of adjacent pen-clamping assemblies being too close. This allows roller 42 and impellers 433 to be alternately arranged in the circumferential direction, further ensuring that the impellers 433 of each pen-clamping assembly 40 are evenly distributed in the circumferential direction. This results in a more uniform distribution of the force exerted by each impeller 433 on the worm gear 60, balancing the forces on the worm gear 60, extending its service life, and improving the reliability of the meshing transmission between the worm gear 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 section 411, which helps to make full use of the internal space of the intelligent pencil sharpener 2, thereby reducing the radial dimension of the pencil feeding mechanism 1 and thus reducing the volume of the intelligent pencil sharpener 2.
[0057] It is worth mentioning that, compared to the impeller 433 being positioned near the axial end of the pen clamping assembly 40, in this embodiment, the impeller 433 is positioned near the middle section of the axial direction of the pen clamping assembly 40. This is beneficial for reducing the torsional deformation caused by torque and the bending deformation caused by bending moment in the first shaft section 434 and the second shaft section 411, resulting in a more uniform load distribution in the pen clamping assembly 40, thereby improving the stability and reliability of the transmission. In addition, it is also beneficial for reducing the impact and vibration of the impeller 433 during the meshing transmission process, thereby reducing the noise when the impeller 433 and the worm gear 60 mesh, and extending the service life of the impeller 433 and the worm gear 60.
[0058] In at least one embodiment, such as Figure 6 and Figure 7 As shown, the pen clamping assembly 40 is assembled from a first mating part 41, a roller 42, and a second mating part 43. The first mating part 41 includes a second shaft segment 411 and a positioning segment 412 arranged sequentially along the axial direction. The second mating part 43 includes a connecting segment 431, a mounting segment 432, an impeller 433, and a first shaft segment 434 arranged sequentially along the axial direction. Specifically, the roller 42 is adapted to be fitted onto the mounting segment 432 of the second mating part 43, and one end face of the roller 42 is adapted to abut against the end face of the impeller 433. The connecting segment 431 of the second mating part 43 is inserted into the first mating part 41, so that the second mating part 43 is adapted to move synchronously with the first mating part 41. Furthermore, with the second mating member 43 inserted into the first mating member 41, the positioning section 412 of the first mating member 41 abuts against the other end face of the roller 42, thereby clamping the roller 42 axially between the positioning section 412 and the impeller 433. This helps to prevent the roller 42 from shifting axially, and thus improves the reliability of the roller 42 abutting against the pencil for pencil feeding and retraction operations. Further, the end face of the impeller 433 that abuts against the roller 42 is provided with an axially protruding portion 435, which is adapted to abut against the end face of the roller 42 to increase the friction between the impeller 433 and the roller 42, facilitating the synchronous rotation of the roller 42, the second mating member 43, and the first mating member 41.
[0059] In some embodiments, as Figure 2 , Figure 3 and Figure 8 As shown, the support member 30 also has several interconnected cavities 31. The cavities 31 extend through the support member 30 in a direction parallel to the central axis C. The cavities 31 can accommodate the roller 42 and the impeller 433. The inner recess 32 includes two grooves 321. The two grooves 321 are located on opposite sides of the cavity 31 and communicate with the cavity 31. The grooves 321 can accommodate and support the first shaft segment 434 or the second shaft segment 411. The bottom surface of the groove 321 forms a guide surface 322.
[0060] It should be understood that the worm gear 60 is positioned below the pen clamp assembly 40 along a direction parallel to the central axis C, so as to facilitate connection with the drive source of the intelligent pen sharpener 2. Furthermore, the cavity 31 extends through the support member 30 along a direction parallel to the central axis C, and the impeller 433 is accommodated in the cavity 31, which facilitates the meshing of the impeller 433 and the worm gear 60 and reduces the interference of the support member 30 on the rotation of the impeller 433 or the worm gear 60.
[0061] Furthermore, both the roller 42 and the impeller 433 are housed in the cavity 31. That is, the roller 42, the impeller 433 and the support 30 overlap at least partially in the direction parallel to the central axis C, which makes the structure of the pen feeding mechanism 1 more compact and helps to reduce the size of the pen feeding mechanism 1 in the direction parallel to the central axis C, thereby reducing the height of the intelligent pen sharpener 2.
[0062] It is worth mentioning that the support member 30 surrounds the outer periphery of the roller 42 and the impeller 433, which can protect the roller 42 and the impeller 433. At the same time, it helps to avoid interference between other parts of the intelligent pencil sharpener 2 and the roller 42 and the impeller 433, thereby improving the reliability of the transmission of the pencil feeding mechanism 1, as well as the reliability during the pencil feeding and retraction operations.
[0063] In some embodiments, as Figure 5 and Figure 9 As shown, the pressing part 52 includes a first pressing plate 521 and a second pressing plate 522 spaced apart, with at least a portion of the first pressing plate 521 and at least a portion of the second pressing plate 522 extending into the cavity 31. That is, the pressing part 52 and the support member 30 at least partially overlap in the direction parallel to the central axis C, which makes the structure of the pen feeding mechanism 1 more compact, thereby helping to reduce the height of the intelligent pencil sharpener 2.
[0064] Furthermore, the receiving cavity 54 is defined between the first pressing plate 521 and the second pressing plate 522, and the receiving cavity 54 can accommodate the roller 42. That is to say, the roller 42 is disposed between the first pressing plate 521 and the second pressing plate 522, thereby axially limiting the roller 42, which helps to reduce the risk of axial displacement of the roller 42; and it separates the roller 42 and the impeller 433, which helps to reduce the risk of interference to the impeller 433 after the roller 42 is displaced, and also helps to reduce the risk of damage to the roller 42 after the impeller teeth of the impeller 433 break, thereby further improving the reliability and stability of the pen feeding mechanism 1 transmission.
[0065] 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 is adapted to abut 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 is adapted to abut against the second shaft segment 411 to provide a force that drives the pen clamp assembly 40 to move radially toward the central axis C.
[0066] It should be understood that, compared to providing only one adjustment surface 53, in this embodiment, by having the first adjustment surface 531 and the second adjustment surface 532 spaced apart abut against the pen clamping assembly 40, the reliability and stability of the force exerted by the pressing part 52 of the adjustment member 50 on the pen clamping assembly 40 are improved, which helps to prevent axial tilting of the pen clamping assembly 40. Furthermore, compared to the first adjustment surface 531 abutting against the first shaft segment 434 and the second adjustment surface 532 abutting against the second shaft segment 411, in this embodiment, as... Figure 5 As shown, the first adjustment surface 531 abuts against the surface of the impeller 433, that is, closer to the middle section of the pen clamp assembly 40 along the axial direction. This helps to reduce the bending effect caused by torque, thereby improving the rotational stability of the pen clamp assembly 40. It is worth mentioning that the second adjustment surface 532 abuts against the impeller 433, thereby providing a force to the impeller 433 toward the worm gear 60. This helps to maintain effective and stable meshing between the impeller 433 and the worm gear 60 during the radial movement of the pen clamp assembly 40 toward or away from the central axis C, thereby further improving the stability and reliability of the pen feeding mechanism 1 transmission.
[0067] In some embodiments, as Figure 9 As shown, the pressing part 52 also includes a connecting plate 523 and an insert 524. The connecting plate 523 connects the first pressing plate 521 and the second pressing plate 522, which helps to improve the structural strength of the pressing part 52 and thus improves the structural reliability of the pen feeding mechanism 1. It should be understood that a receiving cavity 54 is formed between the first pressing plate 521, the connecting plate 523 and the second pressing plate 522 to accommodate the roller 42.
[0068] Furthermore, such as Figure 8 and Figure 9 As shown, the insert 524 protrudes from the side of the connecting plate 523 opposite to the receiving cavity 54, and extends in a direction parallel to the central axis C. The support member 30 has a slot 33, which is fitted to the insert 524 so that the insert 524 is suitable for moving along the slot 33 to guide the adjustment member 50 to move relative to the support member 30 in a direction parallel to the central axis C. It should be understood that the cooperation between the insert 524 and the slot 33 helps to reduce the risk of rotation or tilting of the adjustment member 50 relative to the support member 30, thereby making the compression space 20 between each pair of adjustment surfaces 53 and guide surfaces 322 consistent or nearly consistent. That is, it helps to reduce the distance difference between each pen clamping assembly 40 contained in each compression space 20 and the central axis C, thereby making the center of the pen clamping gap 10 coincide with or nearly coincide with the central axis C, which helps to improve the centering of the pencil.
[0069] 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 nearly coincides with the rotation center of the blade holder of the intelligent pencil sharpener 2. The closer the center of the pencil clamping gap 10 is to the rotation center of the blade holder, that is, the closer the center line of the pencil is to the rotation center of the blade holder, the better to reduce the risk of the pencil lead breaking due to uneven force during the cutting process.
[0070] It is worth mentioning that the insert 524 is located on the side of the connecting plate 523 away from the receiving cavity 54, which helps to avoid interference between the insert 524 and the worm gear 60 in the receiving cavity 54. It also helps to reduce the processing difficulty of the adjusting part 50 and reduce the manufacturing cost of the pen feeding mechanism 1.
[0071] In at least one embodiment, such as Figure 8 As shown, the slot 33, cavity 31 and groove 321 on the support member 30 are interconnected, which helps to reduce the processing difficulty of the support member 30 and further reduce the manufacturing cost of the pen feeding mechanism 1.
[0072] In some embodiments, as Figure 1 As shown, the pen feeding mechanism 1 also 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. The reset member 70 provides a force to drive the adjusting member 50 toward the support member 30. Specifically, as shown... Figure 13 As shown, under the condition of being subjected to external force, such as when a thicker pencil is inserted between the pencil clamping assemblies 40, the pencil abuts against the pencil clamping assembly 40 and pushes the adjusting member 50 to move away from the support member 30 in a direction parallel to the central axis C through the pencil clamping assembly 40. This overcomes the force of the resetting member 70, causing the size of the squeezing space 20 to increase in the direction parallel to the central axis C. As a result, the end of the squeezing space 20 away from the central axis C can also accommodate the pencil clamping assembly 40, 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.
[0073] Meanwhile, the reset member 70 provides a force to drive the adjustment member 50 toward the support member 30, so that the compression space 20 tends to decrease in size along the 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 tends to move radially toward the central axis C, thereby enabling the pencil to be reliably clamped between the various pen clamping assemblies 40 to achieve pen insertion or retraction.
[0074] Further, such as Figure 12As shown, under the condition of external force removal, such as when a thicker pencil is pulled out, the reset member 70 can drive the adjusting member 50 to move toward the support member 30, so that the size of the squeezing space 20 in the direction parallel to the central axis C is reduced, and the end of the squeezing space 20 away from the central axis C can hardly accommodate the pencil clamping assembly 40. Furthermore, the adjusting surface 53 can drive the pencil clamping assembly 40 to 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.
[0075] In at least one embodiment, the reset member 70 is implemented as a single variable-diameter compression spring. The smaller diameter end of the variable-diameter compression spring abuts against the fixing member 80 of the intelligent pencil sharpener 2, and the larger diameter end abuts against the adjusting member 50. This allows for a larger contact area between the variable-diameter compression spring and the adjusting member 50, which helps to distribute the force exerted by the variable-diameter compression spring on the adjusting member 50 more evenly. This further reduces the risk of the adjusting member 50 becoming misaligned, thereby reducing the distance difference between each pencil clamping assembly 40 and the central axis C, and improving the pencil's centering. Furthermore, when the variable-diameter compression spring is compressed, the coils do not interfere with each other. That is, the coils of the variable-diameter compression spring overlap in the height direction parallel to the central axis C, and are even compressed into a single plane. This helps to further reduce the size of the pencil feeding mechanism 1 along the direction parallel to the central axis C, thereby reducing the height of the intelligent pencil sharpener 2.
[0076] 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 intelligent pencil sharpener 2. It is worth noting that the reset member 70 can also be implemented as a tension spring, torsion spring, etc. This application does not impose specific limitations in this regard.
[0077] A smart pencil sharpener 2, such as Figure 1 As shown, the device includes: the aforementioned pen feeding mechanism 1; a fixing member 80 having a guide bar 81 extending in a direction parallel to the central axis C; and an adjusting member 50 of the pen feeding mechanism 1, which further includes a main body 51 with a guide groove 511 adapted to the guide bar 81 to move along the guide groove 511, thereby guiding the adjusting member 50 to move relative to the fixing member 80 in a direction parallel to the central axis C. Furthermore, each pressing portion 52 of the adjusting member 50 is connected to the main body 51, extending from the main body 51 toward the support member 30. It should be understood that the adjusting member 50 allows each pen clamping assembly 40 to move radially toward or away from the central axis C, thereby adjusting the size of the pen clamping gap 10 to allow the pen feeding mechanism 1 to clamp pencils of different diameters, further reducing the risk of the pencil rotating with the shaving holder and improving the reliability of the intelligent pencil sharpener 2.
[0078] This should be understandable, such as Figure 14As shown, the cooperation between the guide bar 81 and the guide groove 511 helps to reduce the risk of the adjusting member 50 rotating or tilting relative to the fixed member 80. Furthermore, the fixed member 80 and the support member 30 remain relatively fixed, which further helps to reduce the risk of the adjusting member 50 rotating or tilting relative to the support member 30, and helps to further improve the centering of the pencil.
[0079] The basic principles, main features, and advantages of this invention have been described above. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made without departing from the spirit and scope of the invention, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection claimed by this invention is defined by the appended claims and their equivalents.
Claims
1. A smart pencil sharpener, characterized in that, It includes a fixing member and a pen feeding mechanism mounted on the fixing member, the pen feeding mechanism comprising: A support member, wherein the support member defines a central axis; A plurality of pen-clamping assemblies are rotatably mounted on the support member. The plurality of pen-clamping assemblies are arranged circumferentially along the central axis to define a pen-clamping gap between each pen-clamping assembly. The pen-clamping assemblies are adapted to move radially relative to the support member to adjust the size of the pen-clamping gap. An adjusting member, connected to the pen clamping assembly, provides a force that drives each of the pen clamping assemblies to move radially toward the central axis, so that each of the pen clamping assemblies holds the pencil.
2. The intelligent pencil sharpener according to claim 1, characterized in that, The adjusting member and the supporting member are stacked in a direction parallel to the central axis. The upper surface of the supporting member has several recesses that accommodate and support both ends of the pen clamping assembly. The recesses extend radially, allowing the pen clamping assembly to move radially relative to the supporting member. The adjusting member has a main body and several pressing portions that extend from the main body toward the supporting member, pressing against the pen clamping assembly. A compression space is defined between the pressing portions and the recesses. The adjusting member is adapted to move relative to the supporting member in a direction parallel to the central axis to adjust the compression space.
3. The intelligent pencil sharpener according to claim 2, characterized in that, The pen clamping assembly includes a first shaft segment, an impeller, a roller, and a second shaft segment arranged sequentially along the axial direction of the pen clamping assembly. The first shaft segment and the second shaft segment are respectively able to cooperate with the recessed portion so that the pen clamping assembly is mounted on the support member and is adapted to move radially relative to the support member. The roller can clamp the pencil to realize the feeding or retraction of the pencil. The pen feeding mechanism also includes a worm gear, which can mesh with the impeller to drive the pen clamping assembly to rotate.
4. The intelligent pencil sharpener according to claim 3, characterized in that, With each of the pen clamping assemblies mounted on the support, the impeller teeth of one pen clamping assembly extend to the corner of the roller and the second shaft segment of another adjacent pen clamping assembly.
5. The intelligent pencil sharpener according to claim 3, characterized in that, The pen feeding mechanism further includes a reset member that elastically connects the adjusting member and the fixing member, and the reset member provides a force that drives the adjusting member to move toward the support member.
6. The intelligent pencil sharpener according to claim 3, characterized in that, The recessed portion has a guide surface on the side facing the adjusting member. The plane of the guide surface is perpendicular to the central axis. The guide surface supports and guides the pen clamping assembly to move radially relative to the supporting member. The pressing portion has at least one adjusting surface on the side facing the supporting member. The pressing space is formed between the adjusting surface and the guide surface. From the end near the pen inlet of the smart pencil sharpener to the end away from the pen inlet of the smart pencil sharpener, the adjusting surface extends obliquely in a direction away from the central axis, so that the size of the pressing space gradually decreases along the direction parallel to the central axis from the end near the central axis to the end away from the central axis.
7. The intelligent pencil sharpener according to claim 6, characterized in that, The support member also has several communicating cavities that extend through the support member in a direction parallel to the central axis. The cavities accommodate the roller and the impeller. The recessed portion includes two grooves located on opposite sides of the cavity and communicating with the cavity. The grooves accommodate and support the first shaft segment or the second shaft segment. The bottom surface of the groove forms the guide surface.
8. The intelligent pencil sharpener according to claim 7, characterized in that, The pressing section includes a first pressing plate, a second pressing plate, and a connecting plate 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. The connecting plate connects the first pressing plate and the second pressing plate, defining a receiving cavity between the first pressing plate, the second pressing plate, and the connecting plate. The receiving cavity can accommodate the roller. The adjustment surface includes a first adjustment surface and a second adjustment surface. The first adjustment surface is formed on the side of the first pressing plate facing the support member and is adapted to abut against the surface of the impeller. The second adjustment surface is formed on the side of the second pressing plate facing the support member and is adapted to abut against the second shaft segment to provide a force that drives the pen clamp assembly to move radially toward the central axis.
9. The intelligent pencil sharpener according to claim 8, characterized in that, The pressing portion of the adjusting member further includes a strip protruding from the connecting plate on the side opposite to the receiving cavity, the strip extending in a direction parallel to the central axis; the support member has a slot that is fitted to the strip so that the strip is adapted to move along the slot to guide the adjusting member to move relative to the support member in a direction parallel to the central axis.
10. The intelligent pencil sharpener according to any one of claims 2-8, characterized in that, The main body of the adjusting member is provided with a guide groove, and the fixing member has a guide bar extending in a direction parallel to the central axis. The guide bar is installed and adapted to the guide groove so that the guide bar is suitable for moving along the guide groove, thereby guiding the adjusting member to move relative to the fixing member in a direction parallel to the central axis.