Protection switch structure of electric pencil sharpener

Abstract

The utility model relates to a protection switch structure of an electric pencil sharpener, which comprises a shell, a cutter, a motor, a first elastic piece and a second elastic piece, the shell is provided with a pencil inlet channel and a pencil chip cavity, one side of the pencil chip cavity is provided with an openable cavity cover, the cutter is arranged in the pencil chip cavity, and a first movable block and a second movable block are arranged in the shell. The cavity cover is provided with a push rod used for pushing the first movable block in an abutting mode, and the second movable block stretches into the pen inlet channel. By arranging the first elastic piece, the second elastic piece, and the first movable block and the second movable block which push the first elastic piece and the second elastic piece respectively to enable the first elastic piece and the second elastic piece to abut against each other, the first elastic piece and the second elastic piece can abut against each other to form a loop only when the pencil is inserted into the pencil inlet channel and covered with the cavity cover, the structure is simple, and use is convenient. The cost is low and the assembly is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of electric pencil sharpeners, in particular to a protective switch structure of an electric pencil sharpener. Background Art

[0002] A pencil sharpener is a kind of learning or office supplies. Early pencil sharpeners include a frame with an inclined blade in the frame, a pencil is inserted into the frame, and the pencil is cut by rotating the pencil sharpener.

[0003] In order to facilitate the cutting of pencils, pencil sharpeners were invented. Pencil sharpeners are classified according to the power that drives the pencil sharpening mechanism and can be divided into hand-cranked pencil sharpeners and electric pencil sharpeners.

[0004] In order to ensure safety and prevent the user from starting the electric pencil sharpener before the cavity cover of the pencil shavings cavity is closed, the existing electric pencil sharpener, such as patent No. ZL200520066270.9, is provided with a protection switch structure on the electric pencil sharpener, but its structure is complex, the cost is high, and it is inconvenient to assemble. Utility Model Content

[0005] The utility model aims to provide a protection switch structure of an electric pencil sharpener, which has a simple structure, low cost and is easy to assemble.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A protective switch structure for an electric pencil sharpener comprises a shell, a cutter, a motor, a first spring piece and a second spring piece, the shell being provided with a pen feeding channel and a pencil shavings chamber, one side of the pencil shavings chamber being provided with an openable chamber cover, the cutter being arranged in the pencil shavings chamber, a first movable block and a second movable block being arranged in the shell, the chamber cover being provided with a push rod for pushing the first movable block, the second movable block extending into the pen feeding channel, when the chamber cover is closed and a pencil is inserted into the pen feeding channel, the push rod pushes the first movable block, the pencil pushes the second movable block, the first movable block and the second movable block respectively drive the first spring piece and the second spring piece, so that the first spring piece and the second spring piece conflict with each other to form a loop, and the motor drives the cutter to rotate.

[0008] As a preferred solution, the first movable block is provided with an extension portion extending downward, the shell is provided with a slot corresponding to the push rod, the extension portion is movably arranged in the slot, and during assembly, the push rod is inserted into the slot to push the extension portion to make the first movable block slide along the slot.

[0009] As a preferred solution, the upper edge of the first spring sheet is provided with a first snap-in groove opening upward, the first movable block is provided with a second snap-in groove opening downward, the second snap-in groove runs through the left and right sides of the first movable block, and during assembly, the first movable block is snap-in connected to the first spring sheet through the cooperation of the first snap-in groove and the second snap-in groove.

[0010] As a preferred solution, the two side walls of the second clamping groove are respectively provided with vertically arranged ridges, and during assembly, the first elastic sheet is clamped between the two ridges.

[0011] As a preferred solution, a rocker arm and an upwardly extending boss are provided in the shell, the rocker arm is provided with an axial hole, the axial hole is rotatably connected to the boss, and the second movable block is arranged at the end of the free end of the rocker arm.

[0012] As a preferred solution, the second movable block is integrally connected with the swing rod

[0013] As a preferred solution, one end of the second movable block extending into the pen feed channel is provided with a slope.

[0014] As a preferred solution, an end of the second movable block facing the second elastic piece is provided with an arc-shaped surface.

[0015] As a preferred solution, the second elastic sheet is integrally bent and extended to form a resisting portion, and when the pencil-chip chamber is covered with a chamber cover and a pencil is inserted into the pen-inlet channel, the resisting portion resists the first elastic sheet.

[0016] As a preferred solution, the shell is provided with an elastic buckle, and the cavity cover is provided with a slot corresponding to the elastic buckle. During assembly, the elastic buckle is buckled into the slot.

[0017] Beneficial effects of the utility model:

[0018] The utility model provides a first spring sheet, a second spring sheet, and a first movable block and a second movable block which respectively push the first spring sheet and the second spring sheet to make the first spring sheet and the second spring sheet collide with each other to form a loop when a pencil is inserted into the pen feeding channel and the cavity cover is closed. The utility model has a simple structure, low cost and is easy to assemble.

[0019] In order to more clearly explain 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

[0020] Figure 1 is a schematic diagram of an electric pencil sharpener according to an embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram showing that the first spring piece and the second spring piece of the embodiment of the utility model do not interfere with each other;

[0022] Figure 3 yes Figure 2 Stereoscopic image of

[0023] Figure 4This is a schematic diagram of the first spring piece and the second spring piece in the embodiment of the utility model interfering with each other;

[0024] Figure 5 yes Figure 4 Stereoscopic image of

[0025] Figure 6 Figure 5 A partial enlarged view of position A in the middle;

[0026] Figure 7 This is a structural diagram of a cavity cover according to an embodiment of the utility model;

[0027] Figure 8 It is a structural diagram of the first movable block of an embodiment of the utility model.

[0028] Fig. 9 It is a structural diagram of a swing rod according to an embodiment of the present utility model.

[0029] Description of the accompanying drawings:

[0030] 10-housing; 11-pen inlet channel; 12-cavity cover; 121-push rod; 13-slot; 14-convex column; 15-elastic buckle; 20-tool; 30-motor; 40-first spring sheet; 41-first clamping groove; 50-second spring sheet; 51-contact part; 60-first movable block; 61-extension part; 62-second clamping groove; 63-convex ridge; 70-rocker; 71-second movable block; 711-inclined surface; 712-arc-shaped curved surface; 72-axial hole; 80-battery; 90-pencil. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] like Figure 1-9As shown, the utility model discloses a protection switch structure of an electric pencil sharpener, a protection switch structure of an electric pencil sharpener, comprising a shell 10, a tool 20, a motor 30, a first spring piece 40 and a second spring piece 50, the shell 10 is provided with a pen feeding channel 11 and a pencil shavings chamber, one side of the pencil shavings chamber has an openable chamber cover 12, the tool 20 is arranged in the pencil shavings chamber, a first movable block 60 and a second movable block 71 are arranged in the shell 10, the chamber cover 12 is provided with a push rod 121 for pushing the first movable block 60, the second movable block 71 extends into the pen feeding channel 11, when the chamber cover 12 is covered and a pencil 90 is inserted into the pen feeding channel 11, the push rod 121 pushes the first movable block 60, the pencil 90 pushes the second movable block 71, the first movable block 60 and the second movable block 71 respectively drive the first spring piece 40 and the second spring piece 50, so that the first spring piece 40 and the second spring piece 50 conflict with each other to form a loop, and the motor 30 drives the tool 20 to rotate. By providing the first spring sheet 40, the second spring sheet 50, and the first movable block 60 and the second movable block 71 which respectively push the first spring sheet 40 and the second spring sheet 50 to make the first spring sheet 40 and the second spring sheet 50 collide with each other to form a loop when the pencil 90 is inserted into the pen inlet channel 11 and the cavity cover 12 is closed, the first spring sheet 40 and the second spring sheet 50 will collide with each other to form a loop, which has a simple structure, low cost and convenient assembly.

[0034] In this embodiment, the electric pencil sharpener further comprises a battery 80. In actual use, the power source of the electric pencil sharpener is not limited to the battery 80 but may also be an external wire.

[0035] The first movable block 60 is provided with an extension portion 61 extending downward, and the shell 10 is provided with a slot 13 corresponding to the push rod 121. The extension portion 61 is movably arranged in the slot 13. During assembly, the push rod 121 is inserted into the slot 13 to push the extension portion 61 to make the first movable block 60 slide along the slot 13.

[0036] The upper edge of the first spring piece 40 is provided with a first clamping groove 41 opening upward, and the first movable block 60 is provided with a second clamping groove 62 opening downward, and the second clamping groove 62 runs through the left and right sides of the first movable block 60. During assembly, the first movable block 60 is clamped with the first spring piece 40 through the cooperation of the first clamping groove 41 and the second clamping groove 62, and the two side walls of the second clamping groove 62 are respectively provided with vertically arranged convex ridges 63. During assembly, the first spring piece 40 is clamped between the two convex ridges 63.

[0037] A rocker arm 70 and an upwardly extending boss 14 are provided in the housing 10. The rocker arm 70 is provided with an axial hole 72, and the axial hole 72 is rotatably connected to the boss 14. The second movable block 71 is provided at the end of the free end of the rocker arm 70. In the present embodiment, the second movable block 71 is integrally formed and connected with the rocker arm 70. An inclined surface 711 is provided at one end of the second movable block 71 extending into the pen feed channel 11. An arcuate surface 712 is provided at one end of the second movable block 71 facing the second spring sheet 50. When the pencil 90 is inserted into the pen feed channel 11, it abuts against the inclined surface 711, and the arcuate surface 712 pushes the second spring sheet 50.

[0038] The second elastic piece 50 is integrally bent and extended to form a resisting portion 51 . When the pencil-chip chamber cover 12 is closed and the pencil 90 is inserted into the pen-introducing passage 11 , the resisting portion 51 resists the first elastic piece 40 .

[0039] The housing 10 is provided with an elastic buckle 15 , and the cavity cover 12 is provided with a slot (not shown) corresponding to the elastic buckle 15 . During assembly, the elastic buckle 15 is buckled into the slot.

[0040] 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. A protective switch structure for an electric pencil sharpener, characterized in that: It includes a shell, a tool, a motor, a first spring piece and a second spring piece. The shell is provided with a pen feeding channel and a pencil shavings chamber. One side of the pencil shavings chamber has an openable chamber cover. The tool is arranged in the pencil shavings chamber. The shell is provided with a first movable block and a second movable block. The chamber cover is provided with a push rod for pushing the first movable block. The second movable block extends into the pen feeding channel. When the chamber cover is closed and a pencil is inserted into the pen feeding channel, the push rod pushes the first movable block, and the pencil pushes the second movable block. The first movable block and the second movable block respectively drive the first spring piece and the second spring piece, so that the first spring piece and the second spring piece conflict with each other to form a loop, and the motor drives the tool to rotate.

2. The protection switch structure of an electric pencil sharpener according to claim 1, characterized in that: The first movable block is provided with an extension portion extending downward, the shell is provided with a slot corresponding to the push rod, the extension portion is movably arranged in the slot, and during assembly, the push rod is inserted into the slot to push the extension portion to make the first movable block slide along the slot.

3. The protection switch structure of an electric pencil sharpener according to claim 1, characterized in that: The upper edge of the first spring sheet is provided with a first clamping groove opening upward, the first movable block is provided with a second clamping groove opening downward, the second clamping groove runs through the left and right sides of the first movable block, and during assembly, the first movable block is clamped with the first spring sheet through the cooperation of the first clamping groove and the second clamping groove.

4. The protection switch structure of an electric pencil sharpener according to claim 3, characterized in that: The two side walls of the second clamping groove are respectively provided with vertically arranged ridges, and during assembly, the first elastic sheet is clamped between the two ridges.

5. The protection switch structure of an electric pencil sharpener according to claim 1, characterized in that: A swing rod and a protruding column extending upward are arranged in the shell, the swing rod is provided with an axial hole, the axial hole is rotatably connected with the protruding column, and the second movable block is arranged at the end of the free end of the swing rod.

6. The protection switch structure of an electric pencil sharpener according to claim 5, characterized in that: The second movable block is integrally connected to the swing rod.

7. The protection switch structure of an electric pencil sharpener according to claim 5, characterized in that: An end of the second movable block extending into the pen-feeding channel is provided with an inclined surface.

8. The protection switch structure of an electric pencil sharpener according to claim 5, characterized in that: An end of the second movable block facing the second elastic piece is provided with an arc-shaped surface.

9. The protection switch structure of an electric pencil sharpener according to claim 1, characterized in that: The second elastic sheet is integrally bent and extended to form a resisting portion. When the pencil-chip chamber is covered with a chamber cover and a pencil is inserted into the pen-introducing channel, the resisting portion resists the first elastic sheet.

10. The protection switch structure of an electric pencil sharpener according to claim 1, characterized in that: The shell is provided with an elastic buckle, and the cavity cover is provided with a slot corresponding to the elastic buckle. During assembly, the elastic buckle is buckled into the slot.

Images