Full-automatic electric pencil sharpener

Abstract

The utility model provides a full-automatic electric pencil sharpener. The full-automatic electric pencil sharpener comprises a shell, a cutting assembly and a driving assembly. A cutting cavity and a driving cavity which are distributed front and back are formed in the shell, the cutting assembly is arranged in the cutting cavity and rotationally connected with the shell, the driving assembly is located in the driving cavity and connected with the shell, and the cutting assembly is in transmission connection with the driving assembly; the full-automatic electric pencil sharpener further comprises a sliding block, an ejector rod and a switch. The sliding block is connected to the cutting assembly in a sliding mode, the ejector rod is coaxially and axially movably arranged in the output end of the driving assembly in a penetrating mode, the switch is fixed to the position, located on the rear side of the ejector rod, of the shell, the front end of the ejector rod abuts against the sliding block, and the rear end of the ejector rod abuts against the triggering end of the switch; the driving assembly and the switch are electrically connected with a control circuit board located in the shell. The device has the advantages of being high in automation degree and convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of electric pencil sharpener technology, and more specifically, to a fully automatic electric pencil sharpener. Background Technology

[0002] An electric pencil sharpener is a device used to cut pencils. Currently, commercially available electric pencil sharpeners mainly consist of a housing, a cutting component, and a drive component. Both the cutting and drive components are connected inside the housing, and are connected by a transmission mechanism. Additionally, a button on the side wall of the housing controls the power supply to the drive component. When a pencil is inserted into the cutting component through a hole on the housing, and the button is pressed, the drive component activates the cutting component to cut the pencil. After the pencil is cut, releasing the button stops the drive component from operating the cutting component, and the pencil can then be removed from the cutting component. However, in this structure, the power supply to the drive component is controlled by the user using a button, which makes the electric pencil sharpener inconvenient to use. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a fully automatic electric pencil sharpener, which has the advantages of high automation and ease of use.

[0004] This utility model provides a fully automatic electric pencil sharpener, including a housing, a cutting assembly, and a driving assembly. The housing has a cutting cavity and a driving cavity distributed front-to-back. The cutting assembly is disposed in the cutting cavity and rotatably connected to the housing. The driving assembly is located in the driving cavity and connected to the housing. The cutting assembly and the driving assembly are connected in a transmission manner. The fully automatic electric pencil sharpener also includes a slider, a push rod, and a switch. The slider is slidably connected to the cutting assembly. The push rod is coaxially and axially movable through the output end of the driving assembly. The switch is fixed in the housing located behind the push rod. The front end of the push rod abuts against the slider, and the rear end of the push rod abuts against the trigger end of the switch. Both the driving assembly and the switch are electrically connected to a control circuit board located inside the housing. When a pencil is inserted into the cutting assembly through a hole at the front end of the housing and pushes the slider to trigger the switch via the push rod, the control circuit board controls the driving assembly to drive the cutting assembly to cut the pencil.

[0005] By adopting the above structure, this utility model allows the control circuit board to control the drive component to drive the cutting component when the pencil is inserted into the cutting assembly through the insertion hole at the front end of the housing and the slider is pushed so that the slider triggers the switch via the push rod. This allows the cutting component to cut the pencil. In other words, after the front end of the pencil is inserted into the cutting component and the slider and push rod trigger the switch, the electric pencil sharpener can automatically start and cut the pencil, thus offering the advantage of ease of use. After the pencil is cut and removed from the cutting assembly and housing, the switch loses the pushing force of the push rod and slider. At this time, the switch can automatically disconnect the control circuit between the control circuit board and the drive component, and the drive component can automatically stop driving the cutting component. Thus, during the pencil cutting process, there is no need for the user to operate an additional control button to control the start and stop of the drive component, resulting in a high degree of automation and ease of use.

[0006] In one possible implementation, the cutting assembly includes a tool holder and a hob. The front end of the tool holder is rotatably connected to the front inner wall of the cutting cavity, and the rear end of the tool holder is provided with a slot. The slot is engaged with the output end of the drive assembly and connected for transmission. The hob is located on one side of the tool holder and is rotatably connected to the tool holder. The outer wall of the rear end of the hob is circumferentially provided with meshing teeth, and a gear ring is provided on the housing located on the rear side of the cutting cavity. The meshing teeth mesh with the inner wall of the gear ring. A slider is slidably connected to the tool holder. By using the cutting assembly, when the output end of the drive assembly drives the tool holder to rotate relative to the pencil, the hob can rotate under the action of the meshing teeth and the gear ring. When the hob rotates, it can cut the pencil.

[0007] In one possible implementation, a groove extending from front to back is provided on the side wall of the tool holder, and the slider can be slidably connected in the groove. With this structure, the slider can be reliably slidably connected to the tool holder under the cooperation of the slider and the groove, that is, the slider can be reliably slidably connected to the cutting assembly.

[0008] In one possible implementation, a guide rod is provided in the groove, with its axis parallel to the axis of the hob. Both ends of the guide rod are fitted tightly into the tool holder. The slider is sleeved on the outside of the guide rod and can move along the axial direction of the guide rod. With this structure, the guide rod can guide and direct the sliding of the slider, that is, the slider can slide along the axial direction of the guide rod. Under the guidance of the guide rod, when the pencil is inserted into the cutting assembly from the insertion hole, it can be ensured that the tip of the pencil can always abut against the front side of the slider and push the slider to move relative to the tool holder.

[0009] In one possible implementation, the drive assembly includes a motor, a drive gear, a reduction gear, and a driven gear. The motor is located in the drive cavity and fixed to the housing. The motor is electrically connected to the control circuit board. The drive gear is coaxially fixed to the output shaft of the motor. The reduction gear and the driven gear are rotatably connected to the housing. The driven gear is driven by the reduction gear. A plug is coaxially provided at the front end of the driven gear, forming the output end of the drive assembly. The plug is inserted into a slot and circumferentially limited by the slot. A push rod is coaxially and axially movable through the driven gear. By using this drive assembly, since the plug forms the output end of the drive assembly and is inserted into the slot and circumferentially limited by the slot, when the motor drives the driven gear to rotate via the drive gear and reduction gear, the driven gear can reliably drive the cutting assembly to rotate.

[0010] In one possible implementation, a first annular step is provided on the outer peripheral wall of the front part of the push rod, and a second annular step is provided in the inner hole of the driven gear. The second annular step is used to abut against the first annular step to prevent the push rod from disengaging from the driven gear from back to front. By adopting this structure, when the slider releases its pushing action on the push rod, the cooperation of the first annular step and the second annular step can prevent the push rod from disengaging from the driven gear from back to front.

[0011] In one possible implementation, the housing is provided with a groove, and the switch is embedded in the groove from back to front; a pair of hooks are provided on the side wall of the groove, and the pair of hooks engage with the rear side of the switch to press the switch firmly in the groove; by adopting this structure, the switch can be reliably embedded in the groove and pressed firmly in the groove by the hooks, that is, the switch can be reliably assembled with the housing; in addition, the above-mentioned switch is a micro switch or a tactile switch.

[0012] In one possible implementation, the fully automatic electric pencil sharpener also includes a dust collection box; the dust collection box is inserted from front to back into the cutting cavity located below the cutting assembly; notches are provided at the front end of the housing and on both sides of the dust collection box; the dust collection box allows pencil shavings to be collected in the dust collection box when the cutting assembly cuts the tip of the pencil; the pencil shavings can be emptied when the dust collection box is pulled out of the housing; in addition, the notches allow fingers to pass through and grasp the front end of the dust collection box when it needs to be pulled out of the housing, thus facilitating the removal of the dust collection box from the housing.

[0013] In one possible implementation, the outer bottom of the dust collection box is provided with an upwardly recessed limiting groove, and the inner bottom of the cutting cavity is provided with a limiting protrusion. When the dust collection box is inserted into the cutting cavity from front to back, the limiting groove and the limiting protrusion engage to lock the dust collection box and the housing. With this structure, after the dust collection box is inserted into the housing, the limiting groove can engage with the limiting protrusion to lock the dust collection box and the housing, thereby preventing the dust collection box from freely coming out of the housing, that is, preventing the dust collection box from automatically sliding out of the housing and tipping over.

[0014] In one possible implementation, a number of soft rubber pads are fixed on the outer bottom of the housing in a circumferentially spaced manner; by adopting this structure, the housing can be supported on the table by the soft rubber pads, thereby achieving the purpose of anti-slip when using or placing a fully automatic electric pencil sharpener. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional sectional view of the present invention.

[0017] Figure 3 for Figure 2 A magnified structural diagram of point A in the middle;

[0018] Figure 4 This is a schematic diagram of the first three-dimensional structure of the present invention after removing some of its structural components.

[0019] Figure 5 This is a schematic diagram of the second three-dimensional structure of the present invention after removing part of the structure. Detailed Implementation

[0020] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0021] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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 or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0022] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] See Figure 1-5 As shown in the figure, this application discloses a fully automatic electric pencil sharpener, including a housing 1, a cutting component 2, and a driving component 3. The housing 1 has a cutting cavity 11 and a driving cavity 12 distributed front to back. The cutting component 2 is disposed in the cutting cavity 11 and rotatably connected to the housing 1. The driving component 3 is located in the driving cavity 12 and connected to the housing 1. The cutting component 2 and the driving component 3 are connected in a transmission manner. The fully automatic electric pencil sharpener also includes a slider 4, a push rod 5, and a switch 6. The slider 4 is slidably connected to the cutting component 2. The push rod 5 is coaxially and axially movable through the output end of the driving component 3. The switch 6 is fixed in the housing 1 located behind the push rod 5. The front end of the push rod 5 abuts against the slider 4. The rear end of 5 abuts against the trigger end of switch 6; both drive assembly 3 and switch 6 are electrically connected to control circuit board 7 located inside housing 1; when pencil 8 is inserted into cutting assembly 2 through insertion hole 13 at the front end of housing 1 and pushes slider 4 to trigger switch 6 via push rod 5, control circuit board 7 controls drive assembly 3 to drive cutting assembly 2 to cut pencil 8; in addition, a battery is provided inside housing, and a charging interface is connected to the side wall of housing. Both battery and charging interface are electrically connected to control circuit board. The battery is used to power control circuit board and drive assembly, and the charging interface is used to charge battery after connecting charging cable.

[0025] See you again Figures 2-5As shown, the cutting assembly 2 includes a tool holder 21 and a hob 22. The front end of the tool holder 21 is rotatably connected to the front inner wall of the cutting cavity 11. The rear end of the tool holder 21 is provided with a slot 211, which is engaged with the output end of the drive assembly 3 and connected for transmission. The hob 22 is located on one side of the tool holder 21 and is rotatably connected to the tool holder 21. The outer wall of the rear end of the hob 22 is provided with meshing teeth 221 in the circumferential direction. A gear ring 14 is provided on the housing 1 located on the rear side of the cutting cavity 11. The meshing teeth 221 mesh with the inner wall of the gear ring 14. The slider 4 is slidably connected to the tool holder 21. By using the cutting assembly, when the output end of the drive assembly drives the tool holder to rotate relative to the pencil, the hob can rotate under the action of the meshing teeth and the gear ring. When the hob rotates, it can cut the pencil.

[0026] See you again Figure 2 and 3 As shown, a sliding groove 212 extending from front to back is provided on the side wall of the tool holder 21, and the slider 4 can be slidably connected in the sliding groove 212. With this structure, the slider can be reliably slidably connected to the tool holder under the cooperation of the slider and the sliding groove, that is, the slider can be reliably slidably connected to the cutting assembly.

[0027] See you again Figure 2 and Figure 3 As shown, a guide rod 23 is provided in the slide groove 212. The axis of the guide rod 23 is parallel to the axis of the hob 22. Both ends of the guide rod 23 are fitted and tightened with the tool holder 21. The slider 4 is sleeved on the outside of the guide rod 23 and can move along the axial direction of the guide rod 23. With this structure, under the action of the guide rod, the guide rod can guide and direct the sliding of the slider. That is, the slider can slide along the axial direction of the guide rod. Under the guidance and directing action of the guide rod, when the pencil is inserted into the cutting assembly from the insertion hole, it can be ensured that the front end of the pencil can always abut against the front side of the slider and push the slider to move relative to the tool holder.

[0028] See you again Figure 2As shown, the drive assembly 3 includes a motor 31, a drive gear 32, a reduction gear 33, and a driven gear 34. The motor 31 is located in the drive cavity 12 and fixed to the housing 1. The motor 31 is electrically connected to the control circuit board 7. The drive gear 32 is coaxially fixed on the output shaft of the motor 31. The reduction gear 33 and the driven gear 34 are both rotatably connected to the housing 1. The driven gear 34 is driven by the reduction gear 33 and the drive gear 32. The front end of the driven gear 34 is coaxially provided with a plug post 341, which forms the output end of the drive assembly 3. The plug post 341 is inserted into the slot 211 and is circumferentially limited by the slot 211. The push rod 5 is coaxially and axially movable through the driven gear 34. By adopting this drive assembly, since the plug post forms the output end of the drive assembly and is inserted into the slot and circumferentially limited by the slot, when the motor drives the driven gear to rotate through the drive gear and the reduction gear, the driven gear can reliably drive the cutting assembly to rotate.

[0029] See you again Figure 2 and Figure 3 As shown, a first annular step 51 is provided on the outer peripheral wall of the front part of the push rod 5, and a second annular step 342 is provided in the inner hole of the driven gear 34. The second annular step 342 is used to abut against the first annular step 51 to prevent the push rod 5 from disengaging from the driven gear 34 from the rear to the front. By adopting this structure, when the slider releases the pushing action on the push rod, the cooperation of the first annular step and the second annular step can prevent the push rod from disengaging from the driven gear from the rear to the front.

[0030] See you again Figure 5 As shown, the housing 1 is provided with a groove 15, and the switch 6 is embedded in the groove 15 from back to front; a pair of hooks 16 are provided on the side wall of the groove 15, and the pair of hooks 16 engage with the rear side of the switch 6 to press the switch 6 into the groove 15; by adopting this structure, the switch can be reliably embedded in the groove and pressed into the groove by the hooks, that is, the switch can be reliably assembled with the housing; in addition, the above-mentioned switch is a micro switch or a tactile switch.

[0031] See you again Figure 1 As shown, the fully automatic electric pencil sharpener also includes a dust collection box 9; the dust collection box 9 is inserted from front to back into the cutting cavity 11 located below the cutting assembly 2; notches 17 are provided at the front end of the housing 1 and on both sides of the dust collection box 9; with the dust collection box, when the cutting assembly cuts the tip of the pencil, the pencil shavings can be collected in the dust collection box; when the dust collection box is pulled out of the housing, the pencil shavings can be emptied; in addition, with the notches, when the dust collection box needs to be pulled out of the housing, fingers can pass through the notches and grasp the front end of the dust collection box, thus making it easy to pull the dust collection box out of the housing.

[0032] See you again Figure 2 As shown, the bottom of the dust collection box 9 is provided with an upwardly recessed limiting groove 91, and the bottom of the cutting cavity 11 is provided with a limiting protrusion 18. When the dust collection box 9 is inserted into the cutting cavity 11 from front to back, the limiting groove 91 and the limiting protrusion 18 engage to lock the dust collection box 9 and the housing 1. With this structure, after the dust collection box is inserted into the housing, the limiting groove can engage with the limiting protrusion to lock the dust collection box and the housing, thereby preventing the dust collection box from freely coming out of the housing, that is, preventing the dust collection box from automatically sliding out of the housing and tipping over.

[0033] See you again Figure 1 and Figure 2 As shown, several soft rubber pads 19 are fixed on the outer bottom of the housing 1 in a circumferentially spaced manner; by adopting this structure, the housing can be supported on the table by the soft rubber pads, so as to achieve the purpose of anti-slip when using or placing a fully automatic electric pencil sharpener.

[0034] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A fully automatic electric pencil sharpener, comprising a housing (1), a cutting assembly (2), and a driving assembly (3); wherein the housing (1) has a cutting cavity (11) and a driving cavity (12) distributed front to back, the cutting assembly (2) is disposed in the cutting cavity (11) and rotatably connected to the housing (1), the driving assembly (3) is located in the driving cavity (12) and connected to the housing (1), and the cutting assembly (2) and the driving assembly (3) are drively connected; characterized in that: The fully automatic electric pencil sharpener also includes a slider (4), a push rod (5), and a switch (6); the slider (4) is slidably connected to the cutting assembly (2), the push rod (5) is coaxially and axially movable through the output end of the drive assembly (3), the switch (6) is fixed in the housing (1) located behind the push rod (5), the front end of the push rod (5) abuts against the slider (4), and the rear end of the push rod (5) abuts against the trigger end of the switch (6); the drive assembly (3) and the switch (6) are both electrically connected to the control circuit board (7) located inside the housing (1); when the pencil (8) is inserted into the cutting assembly (2) through the insertion hole (13) at the front end of the housing (1) and the slider (4) is pushed so that the slider (4) triggers the switch (6) through the push rod (5), the control circuit board (7) is used to control the drive assembly (3) to drive the cutting assembly (2) so that the cutting assembly (2) cuts the pencil (8).

2. The fully automatic electric pencil sharpener according to claim 1, characterized in that: The cutting assembly (2) includes a tool holder (21) and a hob (22); the front end of the tool holder (21) is rotatably connected to the front inner wall of the cutting cavity (11), and the rear end of the tool holder (21) is provided with a slot (211), which is engaged with the output end of the drive assembly (3) and connected for transmission; the hob (22) is located on one side of the tool holder (21) and is rotatably connected to the tool holder (21); the outer wall of the rear end of the hob (22) is circumferentially provided with meshing teeth (221), and a gear ring (14) is provided on the housing (1) located behind the cutting cavity (11), and the meshing teeth (221) mesh with the inner wall of the gear ring (14); the slider (4) is slidably connected to the tool holder (21).

3. The fully automatic electric pencil sharpener according to claim 2, characterized in that: The side wall of the tool holder (21) is provided with a sliding groove (212) extending from front to back, and the slider (4) is slidably connected in the sliding groove (212).

4. The fully automatic electric pencil sharpener according to claim 3, characterized in that: A guide rod (23) is provided in the slide groove (212). The axis of the guide rod (23) is parallel to the axis of the hob (22). Both ends of the guide rod (23) are fitted and tightened with the tool holder (21). The slider (4) is sleeved on the outside of the guide rod (23) and can move along the axial direction of the guide rod (23).

5. The fully automatic electric pencil sharpener according to any one of claims 2-4, characterized in that: The drive assembly (3) includes a motor (31), a drive gear (32), a reduction gear (33), and a driven gear (34). The motor (31) is located in the drive cavity (12) and fixed to the housing (1). The motor (31) is electrically connected to the control circuit board (7). The drive gear (32) is coaxially fixed on the output shaft of the motor (31). The reduction gear (33) and the driven gear (34) are rotatably connected to the housing (1). The driven gear (34) is connected to the drive gear (32) via the reduction gear (33). The front end of the driven gear (34) is coaxially provided with a plug post (341). The plug post (341) forms the output end of the drive assembly (3). The plug post (341) is inserted into the slot (211) and circumferentially limited by the slot (211). The push rod (5) is coaxially and axially movable through the driven gear (34).

6. The fully automatic electric pencil sharpener according to claim 5, characterized in that: A first annular step (51) is provided on the outer peripheral wall of the front part of the push rod (5), and a second annular step (342) is provided in the inner hole of the driven gear (34). The second annular step (342) is used to abut against the first annular step (51) to prevent the push rod (5) from disengaging from the driven gear (34) from back to front.

7. The fully automatic electric pencil sharpener according to claim 1, characterized in that: The housing (1) is provided with a groove (15), and the switch (6) is embedded in the groove (15) from back to front; a pair of hooks (16) are provided on the side wall of the groove (15), and the pair of hooks (16) engage with the rear side of the switch (6) to press the switch (6) into the groove (15).

8. The fully automatic electric pencil sharpener according to claim 1, characterized in that: The fully automatic electric pencil sharpener also includes a dust collection box (9); the dust collection box (9) is inserted from front to back into the cutting cavity (11) located below the cutting assembly (2); notches (17) are provided at the front end of the housing (1) and on both sides of the dust collection box (9).

9. The fully automatic electric pencil sharpener according to claim 8, characterized in that: The bottom of the dust collection box (9) is provided with an upwardly recessed limiting groove (91), and the bottom of the cutting cavity (11) is provided with a limiting protrusion (18). When the dust collection box (9) is inserted into the cutting cavity (11) from front to back, the limiting groove (91) and the limiting protrusion (18) engage to lock the dust collection box (9) and the shell (1).

10. The fully automatic electric pencil sharpener according to claim 1, characterized in that: Several soft rubber pads (19) are fixed on the outer bottom of the housing (1) in a circumferentially spaced manner.

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