A pencil sharpener with a pencil holder

Abstract

The utility model discloses a pencil sharpener pencil holder, including support, install the round sheet tooth on the support, install pivot no.

Description

Technical Field

[0001] This utility model relates to the field of pencil sharpener technology, specifically to a pencil sharpener feed bracket. Background Technology

[0002] Currently, hand-cranked pencil sharpeners have a support frame, a sharpening blade assembly below the support frame, and a circular toothed blade assembly above the support frame. Two parallel rotating shafts are mounted on the support frame, with rubber rollers and small gears mounted on the two shafts respectively. However, the rubber rollers and small gears on both sides rotate in opposite directions. The pencil enters through the gap between the two rubber rollers and is sharpened by the sharpening blade assembly below. However, the friction of the pencil entry support frame in hand-cranked pencil sharpeners on the market is unstable, resulting in problems such as the pencil entering too quickly, the tip becoming too thick, lead breakage, and slow pencil retraction.

[0003] Therefore, the purpose of this invention is to provide a pen feeder with stable friction. Utility Model Content

[0004] To solve the aforementioned technical problems in hand-cranked pencil sharpeners, this utility model provides the following technical solution: A pencil sharpener feed bracket includes a bracket with circular teeth mounted on it. A rotating shaft 1 and a rotating shaft 2 are mounted on the bracket above the circular teeth. A rubber roller 1 and a small gear 1 are sequentially mounted on the rotating shaft 1. A small gear 2 and a rubber roller 2 are sequentially mounted on the rotating shaft 2. A stop-rotation rubber 1 is installed inside the small gear 1, and a stop-rotation rubber 2 is installed inside the small gear 2. The rotating shaft 1 and the stop-rotation rubber 1, as well as the rotating shaft 2 and the stop-rotation rubber 2, cooperate through a semi-circular structure to decelerate the pencil feed and accelerate the pencil retraction.

[0005] As a preferred embodiment of the present invention, the semi-circular structure includes a pair of protrusions 1 inside anti-rotation rubber 1 and anti-rotation rubber 2, and the semi-circular structure also includes a pair of protrusions 2 outside rotating shaft 1 and rotating shaft 2, wherein the pair of protrusions 1 and the pair of protrusions 2 are configured to cooperate with each other.

[0006] As a preferred embodiment of the present invention, both the first pair of protrusions and the second pair of protrusions are provided with an acceleration section and a deceleration section.

[0007] Compared with existing technologies, this method controls the amount of friction when the pencil tip is fed by using the contact surface of the anti-rotation eraser and the semi-circular structure in the shaft. This controls the thickness of the pencil tip, reduces the occurrence of broken leads or failure to stop the pencil, and improves the lifespan and quality of the hand-cranked pencil stopper. Attached Figure Description

[0008] Figure 1 An assembly drawing of one embodiment of this utility model; Figure 2 An exploded view of one embodiment of this utility model; Figure 3 A front view of the anti-rotation rubber 9 or anti-rotation rubber 10 provided by this utility model; Figure 4 A perspective view of the anti-rotation rubber 19 or anti-rotation rubber 210 provided by this utility model; Figure 5 A perspective view of the rotating shaft 2 or rotating shaft 5 provided by this utility model; Figure 6 The assembly front view of the anti-rotation rubber and the rotating shaft provided by this utility model; Figure 7 An assembly perspective view of the anti-rotation rubber and the rotating shaft provided by this utility model. Detailed Implementation

[0009] To make the objectives, technical solutions, and advantages of this utility model clearer, the following description will be provided in conjunction with the appendix. Figure 1-7 The embodiments of this utility model will be described in further detail.

[0010] According to a specific embodiment of a pencil sharpener feed bracket, it includes a bracket 1, on which a circular tooth 8 is mounted. A rotating shaft 2 and a rotating shaft 5 are mounted on the bracket 1 above the circular tooth 8, and are installed in parallel. A rubber roller 3 and a pinion 4 are sequentially mounted on the rotating shaft 2, and a pinion 7 and a rubber roller 6 are sequentially mounted on the rotating shaft 5. That is, the rubber roller 3 and the rubber roller 6 rotate in opposite directions, and the pencil enters through the gap between the rubber roller 3 and the rubber roller 6, and then goes down through the hole of the circular tooth 8, and is cut by the pencil sharpener assembly below.

[0011] Currently, the friction of pencil feed brackets on the market is unstable, causing the pencil to feed too quickly, resulting in the pencil tip becoming thicker, the lead breaking, and the pencil retraction being slow. In this embodiment, a stop-rotation eraser 9 is installed inside the small gear 4, and a stop-rotation eraser 10 is installed inside the small gear 7. The rotating shaft 2 and the stop-rotation eraser 9, as well as the rotating shaft 2 and the stop-rotation eraser 10, cooperate through a semi-arc structure to slow down the pencil feed and accelerate the pencil retraction.

[0012] Its semi-circular structure includes a pair of protrusions 91 and a pair of semi-circular arcs inside the anti-rotation rubber 19 and anti-rotation rubber 20. The semi-circular structure also includes a pair of protrusions 21 and a pair of semi-circular arcs outside the rotating shaft 2 and rotating shaft 25. The pair of protrusions 91 and the pair of protrusions 21 are fitted together, and both the pair of protrusions 91 and the pair of protrusions 21 are provided with acceleration and deceleration sections, such as... Figure 3-7 As shown, the acceleration section 911 and deceleration section 912 on the first protrusion 91, and the acceleration section 211 and deceleration section 212 on the second protrusion 21, the end with the larger slope is the acceleration section 911 and acceleration section 211, and the end with the gentler slope is the deceleration section 912 and deceleration section 212. The acceleration section is a retraction stroke, and the deceleration section is an induction stroke.

[0013] The semi-circular structure in the diagram can also be an elliptical structure.

[0014] The working principle of this embodiment is as follows: In the pencil-feeding state, the lower pencil sharpener assembly (not shown in the figure) rotates, driving the circular teeth 8. The rotation of the circular teeth 8, through gear meshing, guides the rotation of pinion 4 and pinion 7. The counterclockwise rotation of pinion 4 and pinion 7 drives the anti-rotation eraser 9 and anti-rotation eraser 10. The semi-circular structure of anti-rotation eraser 9 and anti-rotation eraser 10, as well as the semi-circular structure of pivot 2 and pivot 2 5, generate friction, driving pivot 2 and pivot 2 5 to rotate. The rotation of pivot 2 and pivot 2 5 drives the eraser roller 3 and eraser roller 6 to rotate, thus driving the pencil to feed. The contact surface of the semi-circular structure controls the magnitude of the friction force during pencil feeding, thereby controlling the thickness of the pencil tip and reducing the appearance of broken leads or unstoppable strokes.

[0015] In the retracted state, the lower pencil sharpener assembly (not shown in the figure) rotates, driving the circular teeth 8. The rotation of the circular teeth 8, through gear meshing, guides pinion 4 and pinion 7. Pinion 4 and pinion 7 rotate clockwise, driving anti-rotation eraser 9 and anti-rotation eraser 10. The semi-circular structure of anti-rotation eraser 9 and anti-rotation eraser 10, as well as the semi-circular structure of pivot 2 and pivot 5, generate resistance, driving pivot 2 and pivot 5 to rotate. The rotation of pivot 2 and pivot 5 drives eraser roller 3 and eraser roller 6 to rotate, thereby accelerating the retracted pencil.

[0016] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A pencil sharpener feed holder, characterized in that, The device includes a support frame with circular teeth mounted on it. Above the circular teeth, a first rotating shaft and a second rotating shaft are mounted on the support frame. A first rubber roller and a first pinion are mounted sequentially on the first rotating shaft. A second pinion and a second rubber roller are mounted sequentially on the second rotating shaft. An anti-rotation rubber is installed inside the first pinion and an anti-rotation rubber is installed inside the second pinion. The first rotating shaft and the anti-rotation rubber, as well as the second rotating shaft and the anti-rotation rubber, cooperate through a semi-circular structure to decelerate the pen's entry and accelerate its exit.

2. The pencil sharpener feed holder according to claim 1, characterized in that, The semi-circular structure includes a pair of protrusions within anti-rotation rubber 1 and anti-rotation rubber 2, and also includes a pair of protrusions outside rotating shaft 1 and rotating shaft 2, wherein the pair of protrusions 1 and the pair of protrusions 2 are configured to cooperate with each other.

3. A pencil sharpener feed holder according to claim 2, characterized in that, Both the first pair of protrusions and the second pair of protrusions are provided with an acceleration section and a deceleration section.

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