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 triggering assembly is installed on the fixing piece, and the triggering assembly is suitable for being switched between a closing position and a starting position so as to close or start the intelligent pencil sharpener; the adjusting plate is connected to the fixing piece, the adjusting plate is suitable for rotating around the central axis relative to the fixing piece, and the adjusting plate is provided with an adjusting meshing part; the multiple pen clamping modules are arranged in the circumferential direction of the central axis, installed on the fixing piece and suitable for moving in the radial direction of the fixing piece; the pen clamping module is movably connected to the adjusting plate; the linkage rod is installed on the fixing piece, the linkage rod is provided with a linkage meshing part, the linkage meshing part is suitable for being in meshing transmission with the adjusting meshing part, and under the condition that the triggering assembly is located at the starting position, the linkage rod can drive the adjusting plate to rotate around the central axis in the first direction, so that the pen clamping module moves in the radial direction opposite to the central axis relative to the fixing piece.

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 intelligent pencil sharpener is difficult to adapt to various types of pencils. If the diameter of the pencil is large, it is difficult or impossible to insert the pencil into the pencil feeding mechanism. CONTENT OF THE UTILITY MODEL

[0004] One object of the present application is to provide a pencil feeding mechanism suitable for clamping pencils with 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 with 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; a trigger assembly, the trigger assembly being installed on the fixed part, the trigger assembly being suitable for switching between a closed position and a starting position to close or open an intelligent pencil sharpener; an adjusting plate, the adjusting plate being connected to the fixed part, the adjusting plate being suitable for rotating around the central axis relative to the fixed part, the adjusting plate being provided with an adjusting engagement part; a plurality of pencil clamping modules arranged circumferentially along the central axis, the pencil clamping modules being installed on the fixed part, the pencil clamping modules being suitable for moving radially along the fixed part; the pencil clamping modules being movably connected to the adjusting plate; a linkage rod, the linkage rod being installed on the fixed part, the linkage rod being provided with a linkage engagement part, the linkage engagement part being suitable for engaging and transmitting with the adjusting engagement part, under the condition that the trigger assembly is in the starting position, the linkage rod drives the adjusting plate to rotate around the central axis in a first direction, so that the pencil clamping modules move radially away from the central axis relative to the fixed part.

[0007] As a preferred, the linkage rod is further provided with a driven engagement part, the linkage engagement part and the driven engagement part are sequentially arranged along the axial direction of the linkage rod; the pencil feeding mechanism further comprises a driving part, the driving part comprising a pencil feeding engagement part and a driving engagement part, the pencil feeding engagement part being suitable for engaging and transmitting with the pencil clamping modules to make the pencil clamping modules feed or retract the pencil, the driving engagement part being suitable for engaging and transmitting with the driven engagement part to make the driving part drive the linkage rod to rotate.

[0008] As a preferred, the linkage rod is further provided with a worm gear part, the worm gear part and the linkage engaging part are sequentially arranged along the axial direction of the linkage rod; the adjusting plate is further provided with a rack part, the rack part is suitable for engaging transmission with the worm gear part, so that the linkage rod moves along the axial direction of itself, so that the driven engaging part of the linkage rod engages or separates from the driving engaging part of the driving part.

[0009] As a preferred, the pen feeding mechanism further comprises a retaining member and a first reset member, the retaining member is movably arranged between the trigger assembly and the linkage rod, the first reset member is arranged between the linkage rod and the fixed member; the linkage rod is provided with a limiting slot, under the condition that the trigger assembly is in the starting position, the retaining member is clamped in the limiting slot, so that the driven engaging part engages or separates from the driving engaging part; under the condition that the trigger assembly is in the closed position, the trigger assembly drives the retaining member to separate from the limiting slot, the first reset member moves the linkage rod along the axial direction of itself, so that the driven engaging part engages with the driving engaging part.

[0010] As a preferred, the retaining member is a torsion spring, under the condition that the trigger assembly is in the starting position, the trigger assembly avoids the torsion spring, so that the torsion spring is clamped in the limiting slot by its own elastic force; under the condition that the trigger assembly is in the closed position, the trigger assembly pushes the torsion spring to separate from the limiting slot.

[0011] As a preferred, the adjusting plate comprises a plate body, the adjusting engaging part and the rack part are arranged on the outer side wall of the plate body, the adjusting engaging part and the rack part are arranged along the axial direction of the plate body; the linkage rod is arranged on the outer circumferential side of the adjusting plate, so that the linkage engaging part of the linkage rod is suitable for engaging transmission with the adjusting engaging part, and the worm gear part is suitable for engaging transmission with the rack part.

[0012] As a preferred, the plate body of the adjusting plate is provided with 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 staggered manner, and the pen clamping module is connected to the adjusting groove to be suitable for sliding along the adjusting groove.

[0013] As a preferred, the clipper module comprises a clipper assembly and a support frame, the clipper assembly is rotatably connected to the support frame around its own axis, the clipper assembly is provided with an impeller, the impeller is engaged with the pencil feeding engagement part of the driving member to drive the clipper assembly to rotate; the support frame is movably connected to the fixed member along the radial direction, the support frame is slidably connected to the adjusting plate along the adjusting groove, under the condition that the adjusting plate rotates around the middle axis, the support frame is adapted to move radially relative to the fixed member.

[0014] As a preferred, the trigger assembly comprises a start-stop member and a pair of sliders, the start-stop member is adapted to move between the closed position and the starting position along the X direction, two sliders are symmetrically arranged relative to the X direction and connected to the start-stop member, and the pencil insertion gap is defined between the two sliders; under the condition that the pencil insertion gap is enlarged and the two sliders move away from each other along the Y direction, the start-stop member moves to the starting position, and the trigger assembly avoids the holding member, wherein the X direction, the Y direction and the middle axis are perpendicular to each other.

[0015] To achieve at least one of the above purposes, the technical solution adopted by the present application is: an intelligent pencil sharpener, comprising: the pencil feeding mechanism as claimed in any one of the above; a cutter frame, the cutter frame is located below the pencil feeding mechanism and can cut pencils; a transmission assembly, the transmission assembly is connected to the cutter frame and the driving member of the pencil feeding mechanism, and can drive the cutter frame to rotate and drive the driving member to rotate; a switch member, the switch member is connected to the trigger assembly of the pencil feeding mechanism, and under the condition that the trigger assembly is in the starting position or the closed position, the switch member can turn on or turn off the circuit to turn on or turn off the intelligent pencil sharpener.

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

[0017] (1) The pencil module is adapted to move radially relative to the fixed member, thereby adjusting the size of the pencil clamping gap between each clipper module, so that the pencil feeding mechanism is adapted to clamp pencils of different diameters.

[0018] (2) Under the condition that the trigger assembly is in the starting position, the connecting rod drives the adjusting plate to rotate around the middle axis in the first direction, so that the clipper module moves radially away from the middle axis relative to the fixed member, thereby expanding the pencil clamping gap between each clipper module, which is beneficial to more labor-saving insertion of pencils into the pencil clamping gap. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is an exploded view of the pencil feeding mechanism according to some embodiments of the present application.

[0020] Figure 2 is a sectional view of the pencil feeding mechanism according to some embodiments of the present application.

[0021] Figure 3 is a perspective view of a linkage according to some embodiments of the present application.

[0022] Figure 4 is a perspective view of an adjustment plate according to some embodiments of the present application.

[0023] Figure 5 is a perspective view of a support bracket according to some embodiments of the present application.

[0024] Figure 6 is a perspective view of a pen clip assembly according to some embodiments of the present application.

[0025] Figure 7 is a perspective view of a fixing member according to some embodiments of the present application.

[0026] Figure 8 is a view of a trigger assembly in an activated position according to some embodiments of the present application.

[0027] Figure 9 is a view of a linkage of a trigger assembly in an activated position according to some embodiments of the present application.

[0028] Figure 10 is a view of a linkage of a trigger assembly in an activated position according to some embodiments of the present application.

[0029] Figure 11 is a view of a trigger assembly in a deactivated position according to some embodiments of the present application.

[0030] Figure 12 is a view of a linkage of a trigger assembly in a deactivated position according to some embodiments of the present application.

[0031] Figure 13 is a view of a linkage of a trigger assembly in a deactivated position according to some embodiments of the present application.

[0032] In the figure: 1, pen feeding mechanism; 10, fixing piece; 11, base; 111, cavity; 12, guide groove; 13, guide part; 20, trigger assembly; 21, start-stop piece; 211, convex column; 22, sliding block; 221, sliding groove; 222, pen inserting gap; 23, third reset piece; 30, adjusting plate; 31, plate body; 32, adjusting engagement part; 33, rack part; 34, adjusting groove; 35, guide groove; 36, second reset piece; 40, linkage rod; 41, linkage engagement part; 42, driven engagement part; 43, worm gear part; 44, limiting groove; 45, first reset piece; 46, retaining piece; 50, pen clamping module; 51, pen clamping gap; 52, pen clamping assembly; 521, first shaft section; 522, impeller; 523, roller; 524, second shaft section; 525, elastic piece; 53, support frame; 531, main frame body; 5311, accommodating cavity; 532, guide part; 533, matching part; 60, driving piece; 61, driving engagement part; 62, pen feeding engagement part. DETAILED DESCRIPTION

[0033] Hereinafter, the present application will be further described in conjunction with specific embodiments, and it should be noted that the following described embodiments between or between technical features can be combined to form new embodiments without conflict.

[0034] In the description of the present application, it should be noted that for orientation words, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. The orientation and positional relationship shown in the drawing is based on the orientation or positional relationship, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element 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.

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

[0036] The terms "include" and "have" and any variations thereof in the specification and claims of the present 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 does not have to be limited to only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0037] In the description of the application, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0038] A pen feeding mechanism 1, as shown in Figures 1-13 It comprises a fixed part 10, a trigger assembly 20, an adjusting plate 30, a plurality of pencil clamping modules 50, and a linkage rod 40. The fixed part 10 defines a central axis C. The trigger assembly 20 is installed on the fixed part 10, and the trigger assembly 20 is adapted to switch between the closed position and the starting position to close or open the intelligent pencil sharpener. The adjusting plate 30 is connected to the fixed part 10, and the adjusting plate 30 is adapted to rotate relative to the fixed part 10 around the central axis C, and the adjusting plate 30 is provided with an adjusting engagement part 32. The pencil clamping modules 50 are arranged circumferentially along the central axis C, and the pencil clamping gaps 51 are defined between each pencil clamping module 50, the pencil clamping modules 50 are installed on the fixed part 10, and the pencil clamping modules 50 are adapted to move radially along the fixed part 10; the pencil clamping modules 50 are movably connected to the adjusting plate 30. The linkage rod 40 is installed on the fixed part 10, and the linkage rod 40 is provided with a linkage engagement part 41, and the linkage engagement part 41 is adapted to engage and drive the adjusting engagement part 32, and under the condition that the trigger assembly 20 is located in the starting position, the linkage rod 40 drives the adjusting plate 30 to rotate around the central axis C in the first direction P, so that the pencil clamping modules 50 move radially away from the central axis C relative to the fixed part 10, and the pencil clamping gaps 51 are enlarged.

[0039] It can be understood that the pencil clamping modules 50 are adapted to move radially relative to the fixed part 10, thereby adjusting the size of the pencil clamping gaps 51 between each pencil clamping module 50, so that the pen feeding mechanism 1 is adapted to clamp pencils of different diameters.

[0040] Under the condition that the trigger assembly 20 is located in the starting position, the linkage rod 40 drives the adjusting plate 30 to rotate around the central axis C in the first direction P, so that the pencil clamping modules 50 move radially away from the central axis C relative to the fixed part 10, and the pencil clamping gaps 51 between each pencil clamping module 50 are enlarged, which is beneficial to more labor-saving insertion of the pencil into the pencil clamping gap 51.

[0041] If the linkage rod 40 is not provided, when the pencil is inserted into the pencil clamping gap 51, the pencil clamping gap 51 is in the minimum size state, and the pencil clamping module 50 needs to be pressed by the pencil tip to move radially away from the central axis C relative to the fixed part 10, which is more laborious. In the embodiment, by providing the linkage rod 40, when the pencil pushes the trigger assembly 20 to switch to the starting position, that is, the circuit of the intelligent pencil sharpener is connected, and the intelligent pencil sharpener starts to work, the linkage rod 40 can rotate. Further, through the meshing transmission of the linkage engagement part 41 and the adjustment engagement part 32, the linkage rod 40 can drive the adjustment plate 30 to rotate around the central axis C in the first direction P, so that the pencil clamping module 50 moves radially away from the central axis C relative to the fixed part 10, that is, the pencil clamping gap 51 is enlarged, and thus when the pencil is inserted into the pencil clamping gap 51, the size of the pencil clamping gap 51 is larger than the minimum size state, which is beneficial to more labor-savingly insert the pencil into the pencil clamping gap 51.

[0042] In some embodiments, as shown in Figure 2 and Figure 3 The linkage rod 40 is also provided with a driven engagement part 42, and the linkage engagement part 41 and the driven engagement part 42 are sequentially arranged along the axial direction of the linkage rod 40. The pencil feeding mechanism 1 further includes a driving part 60, and the driving part 60 includes a pencil feeding engagement part 62 and a driving engagement part 61. The pencil feeding engagement part 62 is adapted to meshingly transmit with the pencil clamping module 50 to drive the pencil clamping module 50 to rotate to feed or retract the pencil. The driving engagement part 61 is adapted to meshingly transmit with the driven engagement part 42 to drive the linkage rod 40 to rotate.

[0043] It should be understood that the driving part 60 can drive the pencil clamping module 50 to rotate through the pencil feeding engagement part 62, and can also drive the linkage rod 40 to rotate through the driving engagement part 61, which is beneficial to make the structure of the pencil feeding mechanism 1 more compact, reduce the volume of the pencil feeding mechanism 1, and also beneficial to simplify the transmission path of the pencil feeding mechanism 1, improve the transmission reliability and stability of the pencil feeding mechanism 1.

[0044] In at least one embodiment, as shown in Figure 1 and Figure 2 The driving part 60 is located below each pencil clamping module 50, that is, the adjustment plate 30, the pencil clamping module 50 and the driving part 60 are stacked in the direction of the central axis C. The end surface of the driving part 60 facing the pencil clamping module 50 is provided with the pencil feeding engagement part 62, which can meshingly transmit with the pencil clamping module 50 to drive the pencil clamping module 50 to rotate to automatically feed or retract the pencil. Further, the driving engagement part 61 is arranged on the outer side wall of the driving part 60, which can meshingly transmit with the driven engagement part 42 on the linkage rod 40 to drive the linkage rod 40 to rotate around its own axis.

[0045] In at least one embodiment, the driving member 60 is located at the outer circumferential side of each pencil clamping module 50, i.e. the driving member 60 surrounds each pencil clamping module 50, the pencil feeding engagement part 62 is arranged on the inner side wall of the driving member 60, and is engaged with the pencil clamping module 50 to drive the pencil clamping module 50 to rotate, so as to realize automatic pencil feeding or automatic pencil retraction. Further, the driving engagement part 61 is arranged on the outer side wall of the driving member 60, and is engaged with the driven engagement part 42 on the linkage rod 40 to drive the linkage rod 40 to rotate around the axis thereof.

[0046] In some embodiments, as shown in Figures 2-4 The linkage rod 40 is further provided with a worm gear part 43, and the worm gear part 43 and the linkage engagement part 41 are sequentially arranged along the axial direction of the linkage rod 40. The adjusting plate 30 is further provided with a rack part 33, which is adapted to be engaged with the worm gear part 43 to drive the linkage rod 40 to move along the axial direction thereof, so that the driven engagement part 42 of the linkage rod 40 is engaged with or separated from the driving engagement part 61 of the driving member 60.

[0047] It can be understood that, if the linkage engagement part 41 of the linkage rod 40 and the adjusting engagement part 32 of the adjusting plate 30 are always engaged, and the driven engagement part 42 of the linkage rod 40 and the driving engagement part 61 of the driving member 60 are also always engaged, under the condition that the intelligent pencil sharpener is turned on, the adjusting plate 30 will always rotate along the first direction P around the central axis C, i.e. the pencil clamping module 50 always moves away from the central axis C relative to the fixed part 10, which not only causes the pencil clamping gap 51 to be too large to effectively clamp the pencil, but also causes the pencil clamping module 50 and the adjusting plate 30 to be damaged.

[0048] In the embodiment, the worm gear part 43 of the linkage rod 40 cooperates with the rack part 33 of the adjusting plate 30 to drive the linkage rod 40 to move along the axial direction thereof, so that the driven engagement part 42 is separated from the driving engagement part 61 of the driving member 60. That is, the linkage rod 40 only drives the adjusting plate 30 to rotate through a certain angle, i.e. the pencil clamping module 50 moves a certain distance away from the central axis C relative to the fixed part 10, so that when the pencil is inserted into the pencil clamping gap 51, the size of the pencil clamping gap 51 is larger than the minimum size, which is beneficial to more easily insert the pencil into the pencil clamping gap 51, and at the same time, the pencil clamping gap 51 is not too large to effectively clamp the pencil.

[0049] It is worth mentioning that the rack part 33 can also be arranged on the fixed part 10 or the driving member 60, and the present application does not make specific limitation thereon. In addition, the linkage rod 40 moves along the axial direction thereof to engage or separate the linkage engagement part 41 of the linkage rod 40 with the adjusting engagement part 32 of the adjusting plate 30, which can also achieve the above-mentioned effect, and the present application does not make specific limitation thereon.

[0050] In some embodiments, as shown in Figure 1 andFigure 2 As shown, the pen feeding mechanism 1 further comprises a retaining member 46 movably arranged between the trigger assembly 20 and the linkage rod 40, and a first reset member 45 arranged between the linkage rod 40 and the fixed member 10; the linkage rod 40 is provided with a limiting slot 44. Specifically, when the trigger assembly 20 is in the starting position, the retaining member 46 is clamped in the limiting slot 44, so that the driven engaging portion 42 is kept separated from the driving engaging portion 61. That is, the linkage rod 40 is moved along its axial direction while rotating to overcome the force of the first reset member 45, until the driven engaging portion 42 is separated from the driving engaging portion 61 of the driving member 60. Further, the retaining member 46 is clamped in the limiting slot 44 of the linkage rod 40, so that the linkage rod 40 is kept at the current height, i.e. the driven engaging portion 42 is kept separated from the driving engaging portion 61. It is worth mentioning that at this time, the linkage rod 40 has driven the adjusting plate 30 to rotate by a certain angle, i.e. the pencil clamping module 50 moves away from the central axis C by a certain distance relative to the fixed member 10, so that when the pencil is inserted into the pencil clamping gap 51, the size of the pencil clamping gap 51 is larger than the minimum size, which is beneficial to more labor-saving insertion of the pencil into the pencil clamping gap 51.

[0051] Further, when the trigger assembly 20 is in the closing position, the trigger assembly 20 drives the retaining member 46 to separate from the limiting slot 44, and the first reset member 45 moves the linkage rod 40 along its axial direction, so that the driven engaging portion 42 is engaged with the driving engaging portion 61. That is, after the retaining member 46 is separated from the limiting slot 44, the linkage rod 40 is reversely moved along its axial direction under the action of the first reset member 45, until the driven engaging portion 42 is re-engaged with the driving engaging portion 61 of the driving member 60, so that the driving member 60 can drive the adjusting plate 30 to rotate along the first direction P around the central axis C in the next starting of the intelligent pencil sharpener.

[0052] In at least one embodiment, as shown in Figure 1 The retaining member 46 is implemented as a torsion spring, when the trigger assembly 20 is in the starting position, the trigger assembly 20 avoids the torsion spring, so that the torsion spring is clamped in the limiting slot 44 by its elastic force; when the trigger assembly 20 is in the closing position, the trigger assembly 20 drives the torsion spring to separate from the limiting slot 44.

[0053] In some embodiments, as shown in Figure 1As shown, the trigger assembly 20 includes a start / stop element 21 and a pair of sliders 22. The start / stop element 21 is adapted to move between a closed position and a start position along the X direction. The two sliders 22 are symmetrically connected to the start / stop element 21 relative to the X direction, defining a pen insertion gap 222 between the two sliders 22. When the pen insertion gap 222 widens and the two sliders 22 move in opposite directions along the Y direction, the start / stop element 21 can move towards the start position, and the trigger assembly 20 can avoid the retaining element 46. The X direction, Y direction and the central axis C are perpendicular to each other.

[0054] In at least one embodiment, such as Figure 1 As shown, the slider 22 has a groove 221 that extends in a plane perpendicular to the central axis C and is set at an angle to the X and Y directions. The start / stop member 21 has a protrusion 211 that extends into the groove 221 and is adapted to move along the groove 221. Thus, through the cooperation of the protrusion 211 and the groove 221, the start / stop member 21 can move towards the start position or towards the stop position in the X direction when the two sliders 22 move in opposite directions or towards each other in the Y direction.

[0055] Furthermore, such as Figure 8 As shown, the trigger assembly 20 also includes a third reset member 23, which is disposed between the start / stop member 21 and the fixing member 10. The third reset member 23 is adapted to move the start / stop member 21 from the start position to the close position along the X direction, thereby disconnecting the circuit of the intelligent pencil sharpener's switch. It is worth mentioning that when the start / stop member 21 moves to the close position, it can push the retaining member 46 to separate the retaining member 46 from the limiting groove 44, and then the linkage rod 40 can move along its own axis to the reset position under the action of the first reset member 45, so as to re-engage with the driving member 60.

[0056] In some embodiments, such as Figure 4 As shown, the adjusting plate 30 includes a plate body 31, an adjusting engagement part 32 and a rack part 33 are both disposed on the outer side wall of the plate body 31, and the adjusting engagement part 32 and the rack part 33 are spaced apart along the axial direction of the plate body 31; the linkage rod 40 is located on the outer periphery of the adjusting plate 30, so that the linkage engagement part 41 of the linkage rod 40 is adapted to mesh with the adjusting engagement part 32 for transmission, and the worm gear part 43 is adapted to mesh with the rack part 33 for transmission.

[0057] It should be understood that the adjustment meshing part 32 and the rack part 33 are both located on the adjustment plate 30, which helps to make the structure of the pen feeding mechanism 1 more compact and reduce the volume of the pen feeding mechanism 1. In addition, it also helps to control the distance between the adjustment meshing part 32 and the rack part 33 through machining accuracy, thereby reducing installation errors and making the meshing between the linkage meshing part 41 and the adjustment meshing part 32, as well as the meshing between the worm gear part 43 and the rack part 33, more reliable.

[0058] It is worth mentioning that the adjusting engagement portion 32 and the rack portion 33 can be arranged annularly around the outer circumferential side of the adjusting plate 30, i.e. can also be arranged in an arc segment, and the present application does not make specific limitation thereon.

[0059] In some embodiments, as shown in Figure 4 The plate body 31 of the adjusting plate 30 is provided with a plurality of rotationally symmetrically distributed adjusting grooves 34, one end of the adjusting groove 34 is arranged close to the central axis C, the other end of the adjusting groove 34 is arranged away from the central axis C, and the two ends of the adjusting groove 34 are arranged in a circumferential direction. The pen clamping module 50 is connected to the adjusting groove 34 to be suitable for sliding along the adjusting groove 34.

[0060] In some embodiments, as shown in Figure 4 and Figure 5 The pen clamping module 50 includes a pen clamping assembly 52 and a support frame 53, the pen clamping assembly 52 is rotationally connected to the support frame 53 around its own axis, the pen clamping assembly 52 is provided with an impeller 522, the impeller 522 is engaged with the pen feeding engagement portion 62 of the driving member 60 to drive the pen clamping assembly 52 to rotate; the support frame 53 is radially movably connected to the fixed member 10, the support frame 53 is slidably connected to the adjusting plate 30 along the adjusting groove 34, under the condition that the adjusting plate 30 rotates around the central axis C, the support frame 53 is suitable for radially moving relative to the fixed member 10 to adjust the size of the pen clamping gap 51.

[0061] Specifically, as shown in Figure 5 The support frame 53 includes a main frame body 531 and a matching portion 533 connected to the main frame body 531, the main frame body 531 has a containing cavity 5311 for accommodating the pen clamping assembly 52. That is, the pen clamping assembly 52 is rotatably connected to the main frame body 531 and accommodated in the containing cavity 5311, which is beneficial to make the structure of the pen feeding mechanism 1 more compact.

[0062] Further, the matching portion 533 protrudes from the top surface of the main frame body 531 in the direction of the central axis C, the matching portion 533 extends into the adjusting groove 34 to make the support frame 53 slide along the adjusting groove 34. It can be understood that under the condition that the adjusting plate 30 rotates around the central axis C relative to the fixed member 10, the support frame 53 is driven to move radially relative to the fixed member 10 through the relative movement of the matching portion 533 and the adjusting groove 34.

[0063] In some embodiments, as shown in Figure 6As shown, the pencil clamping assembly 52 further comprises a first shaft segment 521, a roller 523 and a second shaft segment 524, wherein the first shaft segment 521, the impeller 522, the roller 523 and the second shaft segment 524 are arranged in sequence along the axial direction, and the first shaft segment 521 and the second shaft segment 524 are rotatably connected to the support frame 53 so that the pencil clamping assembly 52 is erected on the support frame 53; the impeller 522 is engaged with the pencil feeding engagement part 62 for transmission so as to drive the pencil clamping assembly 52 to rotate, thereby realizing the feeding or withdrawing of the pencil. Furthermore, the pencil clamping assembly 52 further comprises an elastic member 525, which is sleeved on the second shaft segment 524, and the elastic member 525 and the roller 523 are arranged along the axial direction, so that the roller 523 is adapted to move along the axial direction to adjust the position and size of the pencil clamping gap 51, which is conducive to more stable and reliable clamping of the pencil.

[0064] In some embodiments, as shown in Figure 5 and Figure 7 The fixing member 10 comprises a base 11 and a guide groove 12, the base 11 has a plurality of communicating cavities 111, and the cavities 111 are adapted to accommodate the pencil clamping module 50, so that the structure of the pencil feeding mechanism 1 is more compact, which is conducive to reducing the size of the pencil feeding mechanism 1 along the central axis C, 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 50, which can protect the pencil clamping module 50, and at the same time, it is conducive to avoiding interference between other parts of the intelligent pencil sharpener and the pencil clamping module 50, thereby improving the reliability of the pencil feeding mechanism 1. Further, the guide groove 12 is provided on the base 11 and extends along the radial direction of the fixing member 10; the pencil clamping module 50 has a protruding guide part 532 which is adapted to be installed in the guide groove 12, so that the pencil clamping module 50 is adapted to move radially relative to the fixing member 10.

[0065] In at least one embodiment, as shown in Figure 5 and Figure 7 Each of the opposite inner side walls of the cavity 111 has a guide groove 12, and the guide grooves 12 are communicated with the cavity 111, which is conducive to reducing the manufacturing difficulty. The opposite outer side walls of the support frame 53 of the pencil clamping module 50 each have a guide part 532, and the two guide parts 532 are respectively adapted to be installed in the two guide grooves 12. That is, the support frame 53 is connected to the fixing member 10 in a pull-out type structure, which is conducive to improving the reliability of the cooperation movement of the support frame 53 and the fixing member 10, and making the distribution of the interaction force between the support frame 53 and the fixing member 10 more uniform, which is conducive to balancing the force on the support frame 53 and prolonging the service life of the support frame 53.

[0066] In some embodiments, as shown in Figure 4 and Figure 7As shown, the plate body 31 of the adjusting plate 30 is provided with three circumferentially distributed guide grooves 35, and the extension directions of the three guide grooves 35 are on a common imaginary line. Correspondingly, the fixing member 10 further comprises three guide portions 13 connected to the base 11, the guide portions 13 protrude from the top surface of the base 11 along the central axis C, and are respectively matched with the three guide grooves 35 of the adjusting plate 30, so that the adjusting plate 30 is adapted to rotate relative to the fixing member 10 around the central axis C. It can be understood that through the cooperation of multiple pairs of guide grooves 35 and guide portions 13, the reliability of the cooperation movement of the adjusting plate 30 and the fixing member 10 is improved, and the distribution of the interaction force of the adjusting plate 30 and the fixing member 10 on the adjusting plate 30 and on the fixing member 10 is more uniform, which is beneficial to balance the force of the adjusting plate 30 and prolong the service life of the adjusting plate 30.

[0067] In some embodiments, as Figure 1 As shown, the pen feeding mechanism 1 further comprises a second reset member 36, which elastically connects the adjusting plate 30 and the fixing member 10 to provide an acting force for driving the adjusting plate 30 to rotate around the central axis C in a second direction Q, so that the pencil clamping module 50 moves radially relative to the fixing member 10 towards the central axis C, wherein the first direction P is opposite to the second direction Q. In at least one embodiment, the reset member is implemented as a torsion spring.

[0068] The working principle of the pen feeding mechanism 1 is as follows.

[0069] Specifically, as Figures 8-10 As shown, under the condition that the pencil is inserted into the pencil insertion gap 222 between the two sliding blocks 22, the pencil can press the sliding blocks 22, so that the two sliding blocks 22 move away from each other along the Y direction, and at the same time, the sliding blocks 22 drive the start-stop member 21 to move to the starting position, thereby making the switch member of the intelligent pencil sharpener connect the circuit. It can be understood that after the circuit is connected, the driving member 60 drives the linkage rod 40 to rotate, so that the adjusting plate 30 rotates around the central axis C in the first direction P through the linkage rod 40, so that the pencil clamping module 50 moves radially away from the central axis C relative to the fixing member 10, the pencil clamping gap 51 is enlarged, and then when the pencil is inserted into the pencil clamping gap 51, the size of the pencil clamping gap 51 is larger than that in the minimum size state, which is beneficial to more labor-savingly insert the pencil into the pencil clamping gap 51. It is worth mentioning that the linkage rod 40 rotates at the same time and moves upward along the axis direction to overcome the action force of the first reset member 45, and then the retaining member 46 is clamped in the limiting groove 44 of the linkage rod 40, so that the linkage rod 40 is kept at the current height, and the driven meshing portion 42 is kept separated from the driving meshing portion 61 of the driving member 60.

[0070] Furthermore, with the pencil inserted into the clamping gap 51, the pencil abuts against each clamping module 50. The clamping module 50, in conjunction with the adjusting groove 34, drives the adjusting plate 30 to rotate further around the central axis C in the first direction P. This allows each clamping module 50 to move radially away from the central axis C, thereby increasing the size of the clamping gap 51 to accommodate pencils of different diameters. Simultaneously, the second resetting member 36 provides a force to drive the adjusting plate 30 to rotate around the central axis C in the second direction Q, giving the adjusting plate 30 a tendency to rotate around the central axis C in the second direction Q. Furthermore, the adjusting groove 34, in conjunction with the clamping module 50, gives the clamping module 50 a tendency to move radially toward the central axis C, thus reliably clamping the pencil between the clamping modules 50 to achieve pencil insertion or retraction. It should be understood that if the linkage engagement part 41 of the linkage rod 40 and the adjustment engagement part 32 of the adjustment plate 30 remain engaged, the linkage rod 40 will continue to rotate under the drive of the adjustment plate 30. It is worth mentioning that at this time, the worm gear part 43 of the linkage rod 40 should be separated from the rack part 33 of the adjustment plate 30. This helps to avoid interference between the rack part 33 and the worm gear part 43, which would prevent the adjustment plate 30 from rotating around the central axis C.

[0071] Furthermore, such as Figures 11-13 As shown, under the condition of external force removal, such as when the pencil is pulled out, the second reset member 36 drives the adjustment plate 30 to rotate around the central axis C in the second direction Q. Furthermore, through the cooperation of the adjustment groove 34 with the pencil clamping module 50, the pencil clamping module 50 moves radially toward the central axis C, thereby reducing the size of the pencil clamping gap 51 to accommodate finer pencils. Simultaneously, the third reset member 23 moves the start / stop member 21 to the closed position in the X direction, thereby disconnecting the circuit of the intelligent pencil sharpener's switch. The start / stop member 21 pushes the retaining member 46 to separate it from the limiting groove 44. The linkage rod 40 rotates under the action of the first reset member 45 and the adjustment plate 30 and moves downward along its own axis until it is reset. The driven engagement portion 42 of the linkage rod 40 re-engages with the driving engagement portion 61 of the driving member 60.

[0072] A smart pencil sharpener includes: a blade holder, a transmission assembly, a switch, and the aforementioned pencil feeding mechanism 1. The blade holder is located below the pencil feeding mechanism 1 and is used to cut pencils. The transmission assembly is connected to the blade holder and a drive member 60 of the pencil feeding mechanism 1, and is used to drive the blade holder to rotate and the drive member 60 to rotate. The switch is connected to a trigger assembly 20 of the pencil feeding mechanism 1, and when the trigger assembly 20 is in an active or inactive position, the switch can connect or disconnect the circuit to turn the smart pencil sharpener on or off.

[0073] In at least one embodiment, the tool rest is axially connected with the driving member 60. That is, the transmission assembly drives the tool rest to rotate, and further drives the driving member 60 to rotate through the tool rest, which is beneficial to make the structure of the intelligent pencil sharpener more compact, reduce the volume of the intelligent pencil sharpener, and is also beneficial to simplify the transmission path, improve the transmission reliability and stability of the intelligent pencil sharpener.

[0074] 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 feeding mechanism of intelligent pen sharpener, comprising: a fixing part defining a central axis; a trigger assembly mounted on the fixing part, the trigger assembly being adapted to switch between a closed position and an activated position to close or open the intelligent pen sharpener; an adjusting plate connected to the fixing part, the adjusting plate being adapted to rotate about the central axis relative to the fixing part, the adjusting plate being provided with an adjusting engagement part; a plurality of pen clamping modules arranged circumferentially along the central axis, the pen clamping modules being mounted on the fixing part and adapted to move radially along the fixing part, the pen clamping modules being movably connected to the adjusting plate; a linkage rod mounted on the fixing part, the linkage rod being provided with a linkage engagement part adapted to engage with the adjusting engagement part for transmission, under the condition that the trigger assembly is in the activated position, the linkage rod drives the adjusting plate to rotate about the central axis in a first direction, so that the pen clamping modules move radially away from the central axis relative to the fixing part.

2. The pen delivery mechanism according to claim 1, characterized by The linkage rod is further provided with a driven engagement part, the linkage engagement part and the driven engagement part being arranged sequentially along the axial direction of the linkage rod; the pen feeding mechanism further comprises a driving member, the driving member comprising a pen feeding engagement part adapted to engage with the pen clamping modules for transmission to make the pen clamping modules feed or retract a pen, and a driving engagement part adapted to engage with the driven engagement part for transmission to make the driving member rotate the linkage rod.

3. The pen delivery mechanism of claim 2, wherein The linkage rod is further provided with a worm gear part, the worm gear part and the linkage engagement part being arranged sequentially along the axial direction of the linkage rod; the adjusting plate is further provided with a rack part adapted to engage with the worm gear part for transmission to make the linkage rod move along the axial direction of itself, so that the driven engagement part of the linkage rod engages with or disengages from the driving engagement part of the driving member.

4. The pen delivery mechanism of claim 3, wherein The pen feeding mechanism further comprises a retaining member movably arranged between the trigger assembly and the linkage rod, and a first reset member arranged between the linkage rod and the fixing part; the linkage rod is provided with a limiting slot, under the condition that the trigger assembly is in the activated position, the retaining member is clamped in the limiting slot to make the driven engagement part engage with or disengage from the driving engagement part; under the condition that the trigger assembly is in the closed position, the trigger assembly drives the retaining member to disengage from the limiting slot, and the first reset member moves the linkage rod along the axial direction of itself to make the driven engagement part engage with the driving engagement part.

5. The pen delivery mechanism of claim 4, wherein The retaining member is a torsion spring, under the condition that the trigger assembly is in the activated position, the trigger assembly avoids the torsion spring to make the torsion spring clamped in the limiting slot by its elastic force; under the condition that the trigger assembly is in the closed position, the trigger assembly pushes the torsion spring to disengage from the limiting slot.

6. A pen delivery mechanism according to any one of claims 3 to 5, wherein The adjusting plate comprises a plate body, the adjusting engaging part and the rack part are arranged on the outer wall of the plate body, and the adjusting engaging part and the rack part are arranged along the axial direction of the plate body; the linkage rod is located on the outer circumferential side of the adjusting plate, so that the linkage engaging part of the linkage rod is adapted to be engaged with the adjusting engaging part for transmission, and the worm part is adapted to be engaged with the rack part for transmission.

7. The pen delivery mechanism of claim 6, wherein The plate body of the adjusting plate is provided with a plurality of rotationally symmetrical 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, and the two ends of the adjusting groove are arranged in a circumferential direction. The pen clamping module is connected to the adjusting groove to slide along the adjusting groove.

8. The pen delivery mechanism of claim 7, wherein The pen clamping module comprises a pen clamping assembly and a supporting frame, the pen clamping assembly is rotatably connected to the supporting frame about its own axis, the pen clamping assembly is provided with an impeller, the impeller is engaged with the pen feeding engaging part of the driving part for transmission to drive the pen clamping assembly to rotate; the supporting frame is movably connected to the fixed part in the radial direction, and the supporting frame is slidably connected to the adjusting plate. Under the condition that the adjusting plate rotates about the central axis, the supporting frame is adapted to move radially relative to the fixed part.

9. The pen delivery mechanism of any one of claims 4-5, wherein, The trigger assembly comprises a start-stop part and a pair of sliders, the start-stop part is adapted to move between the closed position and the starting position in the X direction, and the two sliders are symmetrically arranged relative to the X direction and connected to the start-stop part, defining a pen inserting gap between the two sliders; under the condition that the pen inserting gap is enlarged and the two sliders move away from each other in the Y direction, the start-stop part moves to the starting position, and the trigger assembly avoids the retaining part, wherein the X direction, the Y direction and the central axis are perpendicular to each other.

10. A smart pencil sharpener, characterized by, Comprise: The pen feeding mechanism according to any one of claims 1-9; The knife holder is located below the pen feeding mechanism and can cut a pencil; The transmission assembly is connected to the knife holder and the driving part of the pen feeding mechanism, which can drive the knife holder to rotate and the driving part to rotate; The switch part is connected to the trigger assembly of the pen feeding mechanism, and under the condition that the trigger assembly is located in the starting position or the closed position, the switch part can turn on or turn off the circuit to turn on or turn off the intelligent pencil sharpener.

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