Electric pencil sharpener with cutter convenient to replace

Abstract

The utility model relates to an electric pencil sharpener with a cutter convenient to replace, which comprises a shell, the cutter and a driving component, the shell is provided with a pencil chip cavity and a pencil feeding channel communicated with the pencil chip cavity, a rotatable cutter holder is arranged in the pencil chip cavity, the driving component is in driving connection with the cutter holder, the cutter is detachably arranged on the cutter holder, and the cutter rotates along with rotation of the cutter holder. A positioning structure enabling the cutter to only move longitudinally upwards to be separated from the cutter holder is arranged between the lower end of the cutter and the cutter holder, a limiting structure limiting the cutter to move longitudinally upwards is arranged between the lower end of the pencil feeding channel and the upper end of the cutter, and the limiting structure comprises a receding groove allowing the cutter to move longitudinally upwards and a limiting plate movably arranged in the receding groove. Due to the arrangement of the positioning structure enabling the tool to only move longitudinally upwards to be separated from the tool apron and the limiting structure limiting the tool to move longitudinally upwards, the structure is simple, tool changing is convenient, cost is low, and assembling is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of electric pencil sharpeners, in particular to an electric pencil sharpener which is convenient for replacing cutters. Background Art

[0002] Electric pencil sharpeners for home and office use are widely used and have a demand that exceeds that of traditional manual pencil sharpeners.

[0003] After being used for a period of time, the blade of the existing electric pencil sharpener will wear out and need to be replaced. However, the blade replacement structure of the existing electric pencil sharpener is complicated, the blade replacement is inconvenient, and the cost is high. Utility Model Content

[0004] The utility model aims to provide an electric pencil sharpener with convenient blade replacement, which has simple structure, convenient blade replacement, low cost and convenient assembly.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The invention discloses an electric pencil sharpener for convenient replacement of cutting tools, comprising a shell, a cutting tool and a driving assembly, wherein the shell is provided with a cutting tool chamber and a pen feeding channel connected to the cutting tool chamber, a rotatable cutting tool seat is provided in the cutting tool chamber, the driving assembly is drivingly connected to the cutting tool seat, the cutting tool is detachably arranged on the cutting tool seat, and the cutting tool rotates as the cutting tool seat rotates, a positioning structure is provided between the lower end of the cutting tool and the cutting tool seat for enabling the cutting tool to only move longitudinally upward to escape from the cutting tool seat, a limiting structure is provided between the lower end of the pen feeding channel and the upper end of the cutting tool for limiting the longitudinal upward movement of the cutting tool, and the limiting structure comprises a clearance groove for the longitudinal upward movement of the cutting tool and a limiting plate movably arranged in the clearance groove.

[0007] As a preferred solution, the positioning structure includes an insert block and a slot, and the tool is connected to the tool holder through the cooperation of the insert block and the slot.

[0008] As a preferred solution, the insert block is provided at the lower end of the tool, and the slot is provided at the tool holder.

[0009] As a preferred embodiment, the limiting structure also includes a bushing and a return spring that makes the limiting pressure always have a tendency to move downward, the bushing includes a top plate and a surrounding edge, the top plate and the surrounding edge are surrounded to form the give way groove, the limiting plate is horizontally arranged in the give way groove, the top plate is provided with a first give way hole corresponding to the pen feed channel, and the limiting plate is provided with a second give way hole corresponding to the first give way hole. When in use, the pencil insert passes through the pen feed channel, the first give way hole and the second give way hole in sequence and is inserted into the tool.

[0010] As a preferred solution, the limit plate is provided with an upwardly extending guide rod on the outer side of the second clearance hole, the top plate is provided with a guide hole, the guide rod is slidably connected to the guide hole, and the return spring is sleeved on the guide rod and located between the top plate and the limit plate.

[0011] As a preferred solution, radially outwardly protruding buckles are respectively provided on two opposite sides of the end of the free end of the guide rod, and an elastic clearance groove is provided between the two buckles. During assembly, the buckle passes through the second clearance hole and is buckled on the upper surface of the top plate under the action of the reset spring.

[0012] As a preferred embodiment, the limiting structure also includes a bushing, which includes a top plate and a surrounding edge, the top plate and the surrounding edge surround the give way groove, the limiting plate is vertically arranged in the give way groove, and the top plate is provided with a first give way hole corresponding to the pen feed channel. When in use, the pencil insert passes through the pen feed channel and the first give way hole in sequence and is inserted into the tool.

[0013] As a preferred solution, the surrounding edge is provided with a notch for the limiting plate to extend and retract.

[0014] As a preferred solution, an extension plate is integrally extended from one end of the limit plate in the extending and retracting direction, a toggle block is provided on the extension plate, and a window is provided on the shell for toggling the toggle block back and forth.

[0015] As a preferred solution, the limiting structure also includes a clamping member, which is arranged on the outer side of the bushing, and the clamping member is provided with an elastic arm bent downward, and the elastic arm is provided with a clamping block, and the limiting plate is provided with a first clamping groove and a second clamping groove corresponding to the clamping block, when the clamping block is clamped with the first clamping groove, the limiting plate does not extend from the notch into the clearance groove; when the clamping block is clamped with the second clamping groove, the limiting plate extends from the notch into the clearance groove and is clamped above the tool.

[0016] Beneficial effects of the utility model:

[0017] The utility model provides a positioning structure that enables the tool to only move longitudinally upward to escape from the tool seat and a limiting structure that limits the longitudinal upward movement of the tool, so the structure is simple, the tool is easy to change, the cost is low, and the assembly is convenient.

[0018] In order to more clearly illustrate the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a tool according to an embodiment of the utility model;

[0020] Figure 2It is a schematic diagram of a tool-free embodiment of the utility model;

[0021] Figure 3 It is a cross-sectional view of the first embodiment of the utility model;

[0022] Figure 4 This is an exploded view of the limiting structure of the first embodiment of the utility model;

[0023] Figure 5 It is a cross-sectional view of the second embodiment of the utility model;

[0024] Figure 6 This is a schematic diagram of the limiting structure of the second embodiment of the utility model;

[0025] Figure 7 This is a structural diagram of a bushing in Embodiment 2 of the present utility model;

[0026] Figure 8 This is a structural diagram of a limiting plate of Embodiment 2 of the present utility model;

[0027] Fig. 9 This is a structural diagram of the clamping member of the second embodiment of the present utility model.

[0028] Description of the accompanying drawings:

[0029] 10-housing; 11-pen feed channel; 12-knife seat; 121-slot; 13-bushing; 131-gap groove; 132-top plate; 133-edge; 134-first gap hole; 135-guide hole; 136-notch; 14-limiting plate; 141-second gap hole; 142-guide rod; 1421-buckle; 1422-elastic gap groove; 143-extension plate; 1431-sliding block; 1432-first clamping groove; 1433-second clamping groove; 15-reset spring; 16-clamping piece; 161-elastic arm; 162-clamping block; 17-window; 20-knife; 21-insertion block; 30-driving assembly; 40-battery. DETAILED DESCRIPTION

[0030] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0032] like Figure 1-9 As shown, the utility model discloses an electric pencil sharpener for convenient replacement of a tool 20, comprising a shell 10, a tool 20 and a driving assembly 30, wherein the shell 10 is provided with a pencil shavings chamber and a pen feeding channel 11 connected to the pencil shavings chamber, a rotatable tool holder 12 is provided in the pencil shavings chamber, the driving assembly 30 is drivingly connected to the tool holder 12, the tool 20 is detachably arranged on the tool holder 12, and the tool 20 rotates as the tool holder 12 rotates, a positioning structure is provided between the lower end of the tool 20 and the tool holder 12, which enables the tool 20 to only move longitudinally upward to escape from the tool holder 12, a limiting structure is provided between the lower end of the pen feeding channel 11 and the upper end of the tool 20 for limiting the longitudinal upward movement of the tool 20, and the limiting structure comprises a clearance groove 131 for the longitudinal upward movement of the tool 20 and a limiting plate 14 movably arranged in the clearance groove 131. By providing a positioning structure that enables the tool 20 to only move longitudinally upward to escape from the tool holder 12 and a limiting structure that limits the longitudinal upward movement of the tool 12, the structure is simple, tool changing is convenient, cost is low, and assembly is convenient.

[0033] The positioning structure includes an insert block 21 and a slot 121 . The insert block 21 is disposed at the lower end of the tool 20 , and the slot 121 is disposed on the tool holder 12 . The tool 20 is connected to the tool holder 12 through the cooperation of the insert block 21 and the slot 121 .

[0034] When the tool 20 is mounted on the tool holder 12 , the lower end of the limiting plate 14 is arranged at a micro distance from the upper end of the tool 20 .

[0035] Embodiment 1

[0036] like Figure 3-4As shown, in this embodiment, the limiting structure also includes a bushing 13 and a return spring 15 that makes the limiting pressure always have a tendency to move downward, the bushing 13 includes a top plate 132 and a surrounding edge 133, the top plate 132 and the surrounding edge 133 surround the give way groove 131, the limiting plate 14 is horizontally arranged in the give way groove 131, the top plate 132 is provided with a first give way hole 134 corresponding to the pen feed channel 11, and the limiting plate 14 is provided with a second give way hole 141 corresponding to the first give way hole 134. When in use, the pencil insert passes through the pen feed channel 11, the first give way hole 134 and the second give way hole 141 in sequence and is inserted into the tool 20.

[0037] The limiting plate 14 is provided with a guide rod 142 extending upward on the outer side of the second clearance hole 141, the top plate 132 is provided with a guide hole 135, the guide rod 142 is slidably connected to the guide hole 135, and the return spring 15 is sleeved on the guide rod 142 and located between the top plate 132 and the limiting plate 14.

[0038] The free end of the guide rod 142 is provided with radially outwardly protruding buckles 1421 on opposite sides, and an elastic clearance groove 1422131 is provided between the two buckles 1421. During assembly, the buckle 1421 passes through the second clearance hole 141 and is buckled on the upper surface of the top plate 132 under the action of the reset spring 15.

[0039] In this embodiment, a battery 40 is disposed in the housing 10 . In actual use, the electric pencil sharpener may also be replaced by an external power source.

[0040] In this embodiment, the shapes of the insert block 21 and the slot 121 are both cross-shaped. In actual use, they may also be other shapes such as triangle.

[0041] Embodiment 2

[0042] like Figure 5-9 As shown, in this embodiment, the limiting structure also includes a bushing 13, and the bushing 13 includes a top plate 132 and a surrounding edge 133. The top plate 132 and the surrounding edge 133 surround the make way groove 131. The difference between this embodiment and the first embodiment is that the limiting plate 14 is vertically arranged in the make way groove 131, and the top plate 132 is provided with a first make way hole 134 corresponding to the pen feed channel 11. When in use, the pencil is inserted into the tool 20 by passing through the pen feed channel 11 and the first make way hole 134 in sequence.

[0043] The surrounding edge 133 is provided with a notch 136 for the limit plate 14 to extend and retract. The limit plate 14 is integrally extended at one end along the extension and retraction direction to form an extension plate 143. The extension plate 143 is provided with a toggle block 1431. The shell 10 is provided with a window 17 for toggling the toggle block 1431 back and forth.

[0044] The limiting structure also includes a clamping member 16, which is arranged on the outer side of the bushing 13. The clamping member 16 is provided with an elastic arm bent downward, and the elastic arm is provided with a clamping block 162. The limiting plate 14 is provided with a first clamping groove 1432 and a second clamping groove 1433 corresponding to the clamping block 162. When the clamping block 162 is clamped with the first clamping groove 1432, the limiting plate 14 does not extend from the notch 136 into the clearance groove 131; when the clamping block 162 is clamped with the second clamping groove 1433, the limiting plate 14 extends from the notch 136 into the clearance groove 131 and is clamped above the tool 20.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Therefore, any modification, equivalent replacement, improvement, etc. made to the above embodiment based on the technical practice of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. An electric pencil sharpener that is convenient for replacing blades, characterized in that: It includes a shell, a tool and a driving assembly. The shell is provided with a pen chip chamber and a pen feed channel connected to the pen chip chamber. A rotatable tool seat is provided in the pen chip chamber. The driving assembly is drivingly connected to the tool seat. The tool is detachably arranged on the tool seat, and the tool rotates as the tool seat rotates. A positioning structure is provided between the lower end of the tool and the tool seat so that the tool can only move longitudinally upward to escape from the tool seat. A limiting structure is provided between the lower end of the pen feed channel and the upper end of the tool to limit the longitudinal upward movement of the tool. The limiting structure includes a clearance groove for the longitudinal upward movement of the tool and a limiting plate movably arranged in the clearance groove.

2. The electric pencil sharpener for convenient tool replacement according to claim 1, characterized in that: The positioning structure comprises an insert block and a slot, and the tool is connected to the tool holder through the cooperation of the insert block and the slot.

3. The electric pencil sharpener for convenient tool replacement according to claim 2, characterized in that: The insert block is arranged at the lower end of the tool, and the slot is arranged at the tool holder.

4. The electric pencil sharpener for convenient tool replacement according to claim 1, characterized in that: The limiting structure also includes a bushing and a return spring that makes the limiting pressure always have a tendency to move downward, the bushing includes a top plate and a surrounding edge, the top plate and the surrounding edge are surrounded to form the give way groove, the limiting plate is horizontally arranged in the give way groove, the top plate is provided with a first give way hole corresponding to the pen feed channel, and the limiting plate is provided with a second give way hole corresponding to the first give way hole. When in use, the pencil insert passes through the pen feed channel, the first give way hole and the second give way hole in sequence and is inserted into the tool.

5. The electric pencil sharpener for convenient tool replacement according to claim 4, characterized in that: The limit plate is provided with a guide rod extending upward on the outer side of the second clearance hole, the top plate is provided with a guide hole, the guide rod is slidably connected with the guide hole, and the return spring is sleeved on the guide rod and located between the top plate and the limit plate.

6. The electric pencil sharpener for convenient blade replacement according to claim 5, characterized in that: The free end of the guide rod is provided with radially outwardly protruding buckles on two opposite sides, and an elastic clearance groove is provided between the two buckles. During assembly, the buckle passes through the second clearance hole and is buckled on the upper surface of the top plate under the action of the reset spring.

7. The electric pencil sharpener for convenient tool replacement according to claim 1, characterized in that: The limiting structure also includes a bushing, which includes a top plate and a surrounding edge. The top plate and the surrounding edge surround the giving way groove. The limiting plate is vertically arranged in the giving way groove. The top plate is provided with a first giving way hole corresponding to the pen feed channel. When in use, the pencil is inserted into the tool by passing through the pen feed channel and the first giving way hole in sequence.

8. The electric pencil sharpener for convenient blade replacement according to claim 7, characterized in that: The surrounding edge is provided with a notch for the limiting plate to extend and retract.

9. The electric pencil sharpener for convenient blade replacement according to claim 8, characterized in that: An extension plate is integrally extended from one end of the limit plate in the extending and retracting direction, a toggle block is arranged on the extension plate, and a window is arranged on the shell for toggling the toggle block back and forth.

10. The electric pencil sharpener for convenient blade replacement according to claim 9, characterized in that: The limiting structure also includes a clamping piece, which is arranged on the outer side of the bushing, and is provided with an elastic arm bent downward, and a clamping block is provided on the elastic arm, and the limiting plate is provided with a first clamping groove and a second clamping groove corresponding to the clamping block. When the clamping block is clamped with the first clamping groove, the limiting plate does not extend from the notch into the clearance groove; when the clamping block is clamped with the second clamping groove, the limiting plate extends from the notch into the clearance groove and is clamped above the tool.

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