TWI701163B - Sharpener that can prompt sharpening - Google Patents

Abstract

The present invention is a pencil sharpener capable of prompting sharpening, which includes a base, a prompt button, a pen sharpening base, and a triggering member. The prompt button and the pen sharpening base are respectively combined with the base. The trigger is oscillatingly arranged between the pen sharpening base and the prompt button. When a pencil is sharpened in the pen sharpening base, it will push against the trigger, causing the trigger to swing and trigger the prompt button to pop up Because the pushing force provided by the pencil can be effectively applied to the abutting surface of the trigger member, it is not easy to cause the problem of the sharpened pen tip breaking during the pushing process, and the situation of over-shaping the pencil can be effectively avoided.

Description

Sharpener that can prompt sharpening

The invention relates to a pencil sharpener, in particular to a pencil sharpener capable of prompting sharpening.

Generally speaking, after a pencil is used for a period of time, its nib will become blunt and shortened. The nib must be sharpened through a sharpener to expose the inner core of the pencil and be sharpened for ease of use The person performs subsequent writing or drawing.

Please refer to FIG. 12, the conventional pencil sharpener 80 with a sharpening reminder device includes a housing 81, a reminder button 82, and a push block 83. The housing 81 is provided with a receiving groove 811 and a sharpener. A cone 812 and a slide 813, wherein the accommodating groove 811 is concavely formed from the surface of the housing 81; the sharpened cone 812 is arranged in the housing 81 and is spaced from the accommodating groove 811, One of the oblique sides of the pen cone 812 is provided with a blade 814 for a pencil 90 to be inserted and sharpened through the blade 814 in the pencil sharpener 812; the slide 813 is embedded in the bottom of the pencil sharpener 812, It extends along the direction of the blade 814 and communicates with the pencil sharpener 812 and the receiving groove 811.

The reminder button 82 is movably arranged in the accommodating groove 811, the reminder button 82 is provided with a compression spring 821 and a buckle arm 822, and the compression spring 821 is arranged between the reminder button 82 and the accommodating groove 811 In between, the buckle arm 822 is located on the side close to the slide 813, and the prompt button 82 can be pressed to allow the buckle arm 822 to be buckled in the accommodating groove 811; the push block 83 is slidably arranged In the slide 813. During operation, the user first presses the prompt button 82 to position the buckle arm 822 at a buckle position as shown in FIG. 12, and make the compression spring 821 in a compressed state. When the pencil 90 is sharpened to a predetermined After the sharpness of the pen tip 91 will push the push block 83, the push block 83 will slide in the slideway 813 in the direction of the snap arm 822, and finally push the snap arm 822 to make the snap arm The 822 is released from its buckle position, and the prompt button 82 is ejected by the restoring force of the compression spring 821, thereby prompting the user that the pencil 90 has been sharpened.

However, the existing pencil sharpener 80 has the following disadvantages:

1. During the sliding process of the push block 83, friction will be generated between the inner wall of the slideway 813, which hinders the smoothness of the push block 83 pushing against the buckle arm 822, and causes the resistance of the pen tip 91 to move forward. .

2. As shown in Figure 12, because the push block 83 slides along the extension direction of the oblique side of the sharpener cone 812, and the pencil 90 is inserted along the central axis A of the sharpener cone 812, the pencil 90 The pushing direction and the sliding direction of the pushing block 83 are non-coaxial to form an included angle θ (90°<θ<180°). Therefore, when the pencil 90 pushes the pushing block 83, as shown in FIG. 13, a The component force parallel to the sliding direction and a component force perpendicular to the sliding direction will reduce the force pushing the push block 83 on the one hand (only the component force parallel to the sliding direction has the force to push the push block 83), on the other hand , The component force perpendicular to the sliding direction will provide the positive force of the push block 83 acting on the slideway 813, thereby increasing the frictional force of the inner wall of the slideway 813 acting on the pushing block 83, and make the preceding paragraph The situation described is more serious.

3. The aforementioned resistance causes the user to push the pencil 90 harder to trigger the prompt button 82 to leave the buckle position to produce a bounce prompt effect. However, as a result, the pen tip 91 is prone to breakage or damage As a result, the user must continue to sharpen the pencil, resulting in poor sharpening prompt function and still having the problem of over-shaping the pencil 90. In summary, the existing pencil sharpener 80 does need to be improved.

In order to solve the problems of the existing pencil sharpeners that the resistance is large, the sharpening prompt function is not good, and the pencil is still easy to sharpen too much, the present invention provides a sharpener capable of prompting sharpening to effectively improve these problems, which are further described as follows.

The present invention is a pencil sharpener capable of prompting sharpening, which includes: a base provided with an accommodation groove and a buckle structure; A reminder button, the reminder button can be movably arranged in the accommodating groove of the base, and is provided with an actuation unit and an elastic arm, the actuation unit is arranged between the reminder button and the accommodating groove, the The elastic arm can be buckled with the buckle structure so that the prompt button is positioned at a locked position; a pen sharpening seat is provided on the base, and a tapered groove is formed in the pen sharpening seat. The tapered groove has a central axis and both ends are respectively formed with a wide part and a narrow part for sharpening a pencil in the tapered groove; and a triggering piece which is swingably arranged on the pen sharpening base and Between the elastic arms of the reminder button, the trigger includes an abutting surface, a pivotal portion, and an actuating portion connected to the pivotal portion, and the actuating portion is for abutting against the elastic arm of the reminder button Therefore, when one end of the pencil is sharpened in the tapered groove, the trigger member can be swayed against the abutting surface, thereby pushing the elastic arm away from the buckle structure, and triggering the actuation unit to act The prompt button is out of the locked position.

The present invention abandons the conventional sliding sharpened prompt structure. With the above-mentioned technical features, the pencil sharpener with prompt function of the present invention will not interact with conventionally when the trigger is swinging. The friction force generated by the contact of the sliding track will hinder the advancement of the pencil, and the thrust provided by the pencil can be effectively applied to the abutting surface of the triggering member, so that the swinging of the triggering member can produce a better unlocking effect, and Solve the problem of the conventional invalid component. In addition, the thrust of the pencil can be fully utilized, so that the user does not have to push the pencil vigorously, so it is not easy to cause the sharpened nib to break during the pushing process, and can It can effectively avoid excessive planing. Therefore, the present invention is more labor-saving during use and can more accurately trigger the prompt effect.

10: Pedestal

101: pivot unit

102: Base

103: Fastening part

11: holding tank

111: Limit Road

12: buckle structure

121: buckle bump

13: accommodation space

14: Lid

140: Fastening part

141: Ratchet

142A: convex column

142B: Groove

20: Prompt button

201: Actuation unit

202: base

21: Flexible arm

211: snap hole

212: Position the shoulder

22: guide arm

30: Sharpener holder

31: tapered groove

311: Sharpen preset points

32: knife holder

321: Pivot

321A: Piercing

322: Pawl

324: Block

33: Blade

34: body

35: blade seat

36: pivot seat

361: Pivot

40: trigger

401: abutment surface

402: limit flange

41: pivot

42: Actuation Department

80: pencil sharpener

81: shell

811: holding tank

812: Sharpener

813: slide

814: Blade

82: Prompt button

821: compression spring

822: Snap Arm

83: push block

90: pencil

91: nib

A, A’: central axis

F: pivot

θ: included angle

L1: The baffle extends beyond the length of the abutting surface

L2: The overlapping length of the buckle bump and the buckle hole

L3: The displacement stroke of the trigger member pushing the elastic arm

Figure 1 is a perspective partial cross-sectional view of the first preferred embodiment of the present invention.

Figure 2 is another three-dimensional partial cross-sectional view of the first preferred embodiment of the present invention.

Fig. 3 is an exploded perspective view of the first aspect of the first preferred embodiment of the present invention.

3A is an exploded perspective view of the pen sharpener holder in the second aspect of the first preferred embodiment of the present invention.

Figure 4 is a side sectional view of the first preferred embodiment of the present invention.

Fig. 4A is a partial enlarged view of the circled area 4A in Fig. 4.

Fig. 4B is a partial enlarged view of the circled area 4B in Fig. 4.

Fig. 5 is a top sectional view of the first preferred embodiment of the present invention.

Fig. 6 is a perspective view of the prompt button and the pen holder of the first preferred embodiment of the present invention.

Figures 7 and 8 are schematic diagrams of the operation of the first preferred embodiment of the present invention in a cross-sectional side view.

Fig. 9 is a schematic side sectional view of the actuation mode of the elastic arm of the first preferred embodiment of the present invention.

Fig. 10 is a side view of the trigger element of the first preferred embodiment of the present invention.

10A and 10B are schematic diagrams of the relationship between the size of the pivoting portion of the trigger member of the present invention and the unlocking effect.

10C and 10D are schematic diagrams of the relationship between the size of the actuating part of the trigger element of the present invention and the unlocking effect.

Figure 11 is a side cross-sectional view of the second preferred embodiment of the present invention.

Figure 12 is a side sectional view of a conventional pencil sharpener.

Fig. 13 is a partial enlarged side sectional view of the pushing block of the existing pencil sharpener after the pencil is sharpened.

In order to understand the technical features and practical effects of the present invention in detail, and implement it in accordance with the content of the specification, the preferred embodiment shown in the drawings is further described in detail as follows: The present invention is a sharpening pen that can prompt sharpening. The first preferred embodiment of the device, as shown in FIGS. 1 to 3, includes a base 10, a reminder button 20, a sharpener base 30, and a trigger 40.

In the first preferred embodiment of the present invention, the base 10 is a slightly cylindrical shell, and an accommodating space 13 is formed inside the base 10, and as shown in FIGS. 1 to 3, the The base 10 includes a base 102, an accommodating groove 11, a buckle structure 12, and a cover 14 combined with the base 102. A bottom end of the base 102 is closed to form the accommodating space 13, and can collect pen scraps generated in the process of sharpening, the top of the base 102 is provided with at least one buckling portion 103, and the accommodating groove 11 is removed from the base The outer surface of 102 is recessed inwardly at a position close to the bottom, and communicates with the accommodating space 13, the buckle structure 12 is disposed in the accommodating space 13, and the cover 14 is provided with at least one buckling portion 140 , So that the base 102 and the cover 14 are buckled through the respective buckling portions 103, 140 as shown in FIG. 1, wherein, in the first preferred embodiment of the present invention, as shown in FIG. 3, The cover 14 is composed of two half-shells, and the cover 14 is provided with two buckling portions 140 (the base 102 is correspondingly provided with two buckling portions 103), and the two buckling portions 140 are respectively provided at On the two half-shells, the two half-shells are respectively provided with at least one coupling part, and the coupling part of the two half-shells can be a protrusion 142A and a groove 142B respectively, so that the two half-shells can pass through The protruding post and the groove are combined, and the two buckling portions 140 are further buckled with the two buckling portions 103 of the base 102, so that the cover 14 and the base 102 are combined.

Please refer to Figures 1 to 4, the prompt button 20 can be movably disposed in the accommodating groove 11 of the base 10, and is provided with an actuation unit 201 and an elastic arm 21, the actuation unit 201 is provided Between the prompt button 20 and the accommodating groove 11, the elastic arm 21 can be buckled with the buckle structure 12, so that the prompt button 20 is positioned in a locked position as shown in FIG. The moving unit 201 can make the prompt button 20 move in the direction away from the locked position, so that when the elastic arm 21 is separated from the buckle structure 12, the prompt button 20 is moved relative to the base 10 and extends out of the accommodating groove 11, and provide a prompt effect.

In the first preferred embodiment of the present invention, as shown in FIGS. 3 and 4, the prompt button 20 includes a base 202 located in the accommodating groove 11, and the elastic arm 21 is directed away from the base 202 The accommodating groove 11 extends in the direction of the opening and extends into the accommodating space 13, the user presses the base 202 to move the prompt button 20 toward the accommodating groove 11, and the prompt button 20 passes After being pressed, the elastic arm 21 can be buckled with the buckle structure 12. The buckle structure 12 includes a buckle protrusion 121. The buckle protrusion 121 faces the elastic arm from one side of the accommodating groove 11 The direction of the arm 21 protrudes, and the elastic arm 21 is provided with a buckle hole 211 so that the elastic arm 21 is buckled with the buckle protrusion 121 through the buckle hole 211.

As shown in FIG. 4, the connection between the elastic arm 21 and the base 202 forms a fulcrum F, and the elastic arm 21 can swing relative to the fulcrum F so as to escape from the buckle structure 12; further, the actuating unit 201 Is a compression spring, and when the elastic arm 21 is separated from the buckle structure 12, the prompt button 20 is pushed toward the outside of the accommodating groove 11; in other embodiments, the buckle structure 12 may be a buckle hole Or a buckle groove, the elastic arm 21 may be provided with a buckle block that is buckled with the buckle hole or the buckle groove, and the actuating unit 201 may be an elastic piece.

Still further, please refer to FIG. 4, the accommodating groove 11 can further have at least one limiting channel 111 communicating with the accommodating space 13, and the prompt button 20 is correspondingly provided with at least one guide Arm 22, the at least one guiding arm 22 and the elastic arm 21 are spaced apart, the shape of the at least one guiding arm 22 matches the shape of the at least one limiting channel 111, and the at least one guiding arm 22 passes through The at least one limiting channel 111 extends into the accommodating space 13. Therefore, when the prompt button 20 moves relative to the accommodating slot 11, the distance between the at least one guiding arm 22 and the at least one limiting channel 111 The actuation provides a guiding effect, which restricts the prompt button 20 from stably moving linearly in the containing groove 11 without swaying or shaking.

As shown in FIGS. 3 and 4, the pencil sharpener base 30 is combined with the base 10, and a tapered groove 31 is formed inside the pencil sharpener base 30 for sharpening a pencil 90 in the tapered groove 31, The two ends of the tapered groove 31 are respectively formed with a wide portion and a narrow portion. Taking the direction shown in FIG. 4 as an example, the wide portion is located at the top of the tapered groove 31, and the narrow portion is located at the top of the tapered groove 31. The bottom end, and the tapered groove 31 has a sharpened preset point 311 and a central axis A', and the sharpened preset point 311 is the position of the tip of the pencil 90 after sharpening, the central axis A' Through the sharpening preset point 311; in the first preferred embodiment of the present invention, the sharpening base 30 is located in the accommodating space 13, so that the pen chips generated by planing fall on the accommodating base 102 In the space 13, the sharpener holder 30 includes a knife holder 32 and a blade 33. The knife holder 32 is combined with the base 10 and clamped between the two half shells of the cover 14. The blade 33 is locked on the knife seat 32, and the blade 33 and the knife seat 32 jointly form the tapered groove 31.

Further, please refer to Figures 3 and 5, the cover 14 of the base 10 and the knife holder 32 of the pencil sharpener 30 are combined through a ratchet structure, the ratchet structure includes a plurality of ratchet teeth 141 and A plurality of pawls 322, wherein the plurality of ratchet teeth 141 are provided on the inner periphery of the base 10 (distributed on the cover 14 On the two half-shells of ), the plurality of pawls 322 protrude from the outer periphery of the knife holder 32 of the sharpener base 30, and each pawl 322 meshes with one of the ratchet teeth 141 correspondingly. Through the ratchet structure, the user When the pencil is sharpened, the hand can hold the barrel of the pencil 90, and the barrel can be shaved by reciprocating rotation of the barrel. Without turning an angle, the barrel must be loosened and held again, which improves convenience and sharpening efficiency.

Still further, the knife holder 32 may include a body 34 and a blade holder 35, as shown in FIGS. 3 and 4, wherein the body 34 is combined with the base 10 and clamped on two sides of the cover 14 The pawl 322 protrudes between the half-shells and the outer periphery of the main body 34. The blade holder 35 is engaged with the main body 34, the blade 33 is locked on the blade holder 35, and the The blade 33 and the blade seat 35 jointly form the tapered groove 31.

As shown in Figures 4, 7, 8, and 10, the trigger member 40 is swingably disposed between the narrow portion of the tapered groove 31 of the sharpener base 30 and the elastic arm 21 of the prompt button 20. The trigger member 40 has an abutting surface 401, a pivotal portion 41, and an actuating portion 42. The abutting surface 401 is provided at a position where the trigger member 40 faces the narrow portion of the tapered groove 31. The pivotal portion 41 and the The sharpener base 30 or the base 10 is pivotally connected, and the actuating portion 42 is provided for abutting against the elastic arm 21 of the prompt button 20, so that when one end of the pencil 90 is sharpened in the tapered groove 31 , The trigger member 40 can be swayed against the abutting surface 401, thereby pushing the elastic arm 21 out of the buckle structure 12, and triggering the actuating unit 201 to act, so that the prompt button 20 is released from the locked position; Ground, the abutment surface 401 and the central axis A'are perpendicular to each other, so that the thrust provided by the pencil 90 can be applied to the abutment surface 401 of the trigger member 40 vertically and completely, so that the thrust of the pencil 90 is completely absorbed It is used to make the trigger member 40 produce the best swing effect.

Further, as shown in FIGS. 4, 7 and 8, in the first preferred embodiment of the present invention, the body 34 of the knife holder 32 is provided with a pivot unit, preferably, the pivot unit is a pivot Shaft 321, and the pivotal portion 41 of the trigger 40 has a claw, so that the claw of the pivot 41 of the trigger 40 is sleeved on the pivot 321 of the body 34, so that the trigger 40 is opposed to the The pivot 321 swings, and the actuating portion 42 is connected to the pivot portion 41 and extends from the end of the pivot portion 41 away from the pivot 321. In this preferred embodiment In an example, the pivoting portion 41 and the actuating portion 42 are both arm-shaped and perpendicular to each other in an L shape, and the actuating portion 42 abuts against the elastic arm 21 of the prompt button 20.

In addition, the main body 34 and the blade holder 35 of the knife holder 32 can also be integrally formed as shown in FIG. 3A, and the knife holder 32 is provided with a pivot seat 36 which is integrally formed with In combination with the components, the pivot seat 36 is provided with a pivot shaft 361, so that the trigger member 40 is pivotally connected to the pivot seat 36 and can swing relative to the pivot shaft 361. In addition, the trigger member 40 can also be movably pivotally connected to the knife holder 32 through other methods. For example, the pivot portion 41 of the trigger member 40 forms a closed hole, and the knife holder 32 corresponds to the closed hole. A plug is formed on both sides of the, so that the trigger member 40 is pivotally connected to the knife holder 32 through the two plugs to rotate relative to the knife holder 32.

When the user rotates the pencil 90 so that the pencil 90 is sharpened to a predetermined sharpness through the planing of the blade 33, the tip of the pencil 90 reaches the position of the sharpened preset point 311 and pushes against the trigger The element 40 makes the trigger element 40 swing relative to the pivot 321, thereby pushing the elastic arm 21, so that the elastic arm 21 is deformed toward the bottom of the base 10 as shown in FIG. 7. At this time, the buckle hole 211 is separated from the buckle structure 12 of the base 10, and the prompt button 20 is acted by the actuating unit 201 and pops out along the accommodating groove 11, and the user can know that the pencil 90 has been sharpened. Stop planing.

Preferably, as shown in FIGS. 4, 4A, and 4B, since the trigger member 40 swings, the planed pen chips may fall into the gap formed between the trigger member 40 and the tool holder 32 after the trigger member 40 swings. Open space, therefore, the bottom of the knife holder 32 is provided with a blocking piece 324, the blocking piece 324 extends toward the trigger member 40 beyond the abutting surface 401, and the blocking piece 324 extends beyond the abutting surface 401 length L1 is greater than Or equal to the overlapping length L2 (L1≧L2) of the buckle protrusion 121 and the buckle hole 211, in this way, during the swinging process of the trigger member 40, since the stop piece 324 can provide a stopping effect, avoid The pen scraps fall into the open space formed between the trigger member 40 and the knife holder 32 after the trigger member 40 swings.

Further, in the first preferred embodiment of the present invention, the elastic arm 21 is provided with a positioning shoulder 212. When the prompt button 20 is ejected outward, the positioning shoulder 212 and the buckle structure 12 of the base 10 Abut against each other to prevent the prompt button 20 from falling off from the containing groove 11.

After the user pulls out the pencil 90, since the elastic arm 21 has elasticity and loses the force of being pushed down, it will return to the initial state and position as shown in FIG. The direction of the shaped groove 31 is pushed back to facilitate the user to use it again; preferably, in order to prevent the unlocking sensitivity between the elastic arm 21 and the buckle structure 12 from being too high, that is, to prevent the prompt button 20 from being placed on the trigger member 40 When it is touched by mistake or the pencil sharpener is shaken, it pops up, but does not pop up after the pencil 90 is sharpened, prompting the sharpening, causing the problem of incorrect prompts, as shown in FIG. 9, in the first aspect of the present invention In a preferred embodiment, the distance between the position where the actuating portion 42 of the trigger member 40 abuts the elastic arm 21 and the fulcrum F is greater than the position where the buckle protrusion 121 is opposed to the buckle hole 211 The distance from the fulcrum F, the displacement stroke L3 of the triggering member 40 to push the elastic arm 21 downward through swing must be greater than the overlapping length L2 of the buckle protrusion 121 and the buckle hole 211 (L3>L2) , The buckle hole 211 can be moved downward by the overlapping length L2 and separated from the buckle protrusion 121 to complete unlocking. Therefore, the displacement stroke perpendicular to the elastic arm 21 through the trigger 40 is greater than that of the elastic arm 21 Tripping the unlocking stroke can avoid too high unlocking sensitivity and achieve a more precise unlocking effect.

Furthermore, as shown in FIG. 7, in the first preferred embodiment of the present invention, a side of the trigger 40 away from the pivot 321 may be provided with a limit flange 402 facing the blade 33, and the trigger 40 After swinging, the limiting flange 402 abuts against the blade 33 as shown in FIG. 7; through the limiting flange 402, a limiting effect is provided to the swing of the trigger 40 to prevent the trigger 40 from being excessive Swing, causing failure to reset or breakage of parts where component stress is concentrated.

In the above-mentioned operation process, because the trigger member 40 is not in contact with any member other than the elastic arm 21 except for the pivotal joint during the swing process, and the pencil 90 is pushed by the force The swing of the triggering member 40 can be directly transmitted, which can solve the problems of conventional frictional force and ineffective component force. Therefore, compared with the prior art, the present invention saves effort and more accurately triggers the prompt effect during use.

The length ratio of the pivoting portion 41 of the triggering member 40 and the actuating portion 42 is further described. As shown in FIGS. 8 and 10, the triggering member 40 is L-shaped, and the swing axis of the triggering member 40 The center is defined as a point B, the connection between the pivotal portion 41 and the actuating portion 42 is defined as a point C, and the end of the actuating portion 42 against the elastic arm 21 is defined as a point D, where B, C The connection of two points forms a horizontal section BC, and the connection of two points C and D forms a vertical section CD. The central axis A'of the tapered groove 31 is connected through the two points C and D, so that the three points B, C and D The dotted line can be regarded as a right-angled triangle, that is, the pivotal portion 41 extends from the pivot axis B to the central axis A'and has a length, which is a horizontal section BC, and the actuating portion 42 is located along the center The extension of the axis A'has a length, the length is the vertical section CD, and the length of the horizontal section BC and the vertical section CD are preferably between 1 and 50 mm (1≦BC≦50mm, 1≦CD≦ 50mm); further, in the first preferred embodiment of the present invention, when the horizontal section BC is between 3.5 and 7.5 mm, the vertical section CD is between 4 and 14 mm (3.5≦BC≦7.5mm , 4≦CD≦14mm), the trigger 40 has a better effect of triggering and prompting. For example, the length of the horizontal section BC is 5.5 mm and the length of the vertical section CD is 9 mm. Wherein, the position of the abutting surface 401 is adjusted in accordance with the sharpened preset point 311, and may fall at the C point, or may be higher or lower than the C point.

For further analysis, please refer to FIG. 10A and FIG. 10B. When the length of the vertical section CD is fixed and the swing amplitude of the elastic arm 21 is enough to trip and unlock, the swing amplitude remains unchanged. In other words, the point D is downward When the vertical displacements are equal, compare the influence of the change in the length of the horizontal section BC on the use of triggering unlocking. As shown in FIG. 10A, when the length of the horizontal section BC is too short, the trigger 40 must swing a larger amplitude to make The elastic arm 21 generates a swing amplitude sufficient to release and unlock with respect to the fulcrum F. At this time, the horizontal stroke of point D is too large, and when the horizontal stroke of point D is too large, the actuating portion 42 of the trigger member 40 is difficult to push against the elastic Therefore, the length of the horizontal section BC is too short, which easily causes the prompt button 20 to be difficult to unlock and become invalid; on the other hand, as shown in FIG. 10B, when the length of the horizontal section BC is too long When the trigger member 40 swings at a small angle, the swing amplitude of the elastic arm 21 will reach the downward vertical displacement of point D enough to release and unlock, causing the prompt button 20 to be too sensitive and may be in use. In the process of writing a pen, a slight shaking of the base 10 causes the prompt button 20 to jump out, which does not meet the requirements of sharpening prompts.

Please refer to Figure 10C and Figure 10D, when the length of the horizontal section BC is fixed, and the swing amplitude of the elastic arm 21 sufficient to trip and unlock remains unchanged, compare the effect of the change in the length of the vertical section CD on use, The swing angle of the trigger member 40 in FIG. 10C is smaller than the swing angle in FIG. 10D. As shown in FIG. 10C, when the length of the vertical section CD is too short, the trigger member 40 will be unlocked by swinging at a small angle, causing the The prompt button 20 is too sensitive; and as shown in FIG. 10D, when the length of the vertical section CD is too long, the horizontal stroke of the point D is too large, similar to the situation in FIG. 10A, the point D cannot be pushed against the center of the elastic arm 21 In the area, the pushing effect is not good, which easily causes the prompt button 20 to be difficult to be unlocked and become invalid.

FIG. 11 is a second preferred embodiment of the present invention, which is similar in structure to the first preferred embodiment. The main difference is that the base 10 is provided with a pivot unit 101 protruding from the inner wall, and the pivot unit 101 Is formed on the side of the base 102 away from the accommodating groove 11, the main body 34 of the knife holder 32 has a through hole 321A through the side away from the blade 33, and one end of the pivoting portion 41 of the trigger 40 Passing through the through hole 321A inside and out, and being pivotally connected to the pivoting unit 101 of the base 10 so that the triggering member 40 swings relative to the pivoting unit 101 of the base 10, and the pivoting portion 41 of the triggering member 40 The actuating portion 42 is L-shaped, and the actuation method of the triggering member 40 to trigger the prompt button 20 is similar to that of the first preferred embodiment, so it will not be repeated here.

With the above technical features, the present invention can prompt that when the sharpened pencil sharpener is in use, when the trigger member 40 is swinging, it will not come into contact with the slide 813 as in the prior art, which will hinder the pencil 90. The friction force of the propulsion and the thrust provided by the pencil 90 can directly transmit and cause the swing of the trigger member 40 to avoid ineffective component forces. In addition, the thrust of the pencil 90 can be fully utilized, so that the user does not need to be large The pencil 90 is pushed hard, so it is not easy to cause the problem of the sharpened pen tip breaking during the pushing process, and it can effectively avoid excessive planing.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Any person with ordinary knowledge in the relevant technical field can use the present invention without departing from the scope of the technical solution proposed by the present invention. The disclosed technical content has partially changed or modified equivalent embodiments without departing from the technical solution content of the present invention, and all still fall within the scope of the technical solution of the present invention.

10: Pedestal

11: holding tank

12: buckle structure

13: accommodation space

14: Lid

142A: convex column

20: Prompt button

201: Actuation unit

202: base

21: Flexible arm

211: snap hole

30: Sharpener holder

32: knife holder

322: Pawl

33: Blade

35: blade seat

40: trigger

Claims (12)

A pencil sharpener capable of prompting sharpening, comprising: a base provided with a containing groove and a buckle structure; a prompt button, the prompt button can be movably arranged on the base of the base The locating groove is provided with an actuating unit and an elastic arm. The actuating unit is arranged between the prompt button and the accommodating groove. The elastic arm can be buckled with the buckle structure to position the prompt button In a locked position; a sharpening seat, the sharpening seat is provided on the base, and a tapered groove is formed inside the sharpening seat, the tapered groove has a central axis and two ends respectively form a wide part and a The narrow part is used for sharpening a pencil in the tapered groove; and a triggering piece, the triggering piece is swingably arranged between the sharpening base and the elastic arm of the reminder button, the triggering piece includes an abutting surface , A pivoting portion and an actuating portion connected to the pivoting portion, and the actuating portion is for abutting against the elastic arm of the prompt button, so that when one end of the pencil is sharpened in the tapered groove, The trigger member can be swayed against the abutting surface, thereby pushing the elastic arm out of the buckle structure, and triggering the actuation unit to act, so that the prompt button is out of the locked position. The pencil sharpener capable of prompting sharpening according to claim 1, wherein the abutting surface of the trigger member and the central axis are perpendicular to each other, and the abutting surface faces the narrow part of the tapered groove, so that the pencil is sharpened Then, it can abut against the abutting surface, and then push the trigger member to swing. The pen sharpener capable of prompting sharpening according to claim 1, wherein the pen sharpening base is provided with a pivot unit, and the pivot part of the trigger is pivotally connected to the pivot unit. The pen sharpener capable of prompting sharpening according to claim 1, wherein the pivotal portion has a swing axis, and the pivotal portion has a length extending from the swing axis to the central axis, and the length of the pivotal portion is The actuating portion has a length extending along the central axis between 1 mm and 50 mm, and the length of the actuating portion is between 1 mm and 50 mm. According to claim 4, the sharpener capable of prompting sharpening, wherein the length of the pivotal portion is between 3.5 and 7.5 mm, and the length of the actuation portion is between 4 and 14 mm. The pencil sharpener capable of prompting sharpening according to claim 1, wherein the pencil sharpener base includes a knife holder and a blade, the knife holder is combined with the base, and the blade is locked on the knife holder, and The blade and the knife seat jointly form the tapered groove, and the trigger member is further provided with a limiting flange facing the blade. According to claim 3, the sharpener capable of prompting sharpening, wherein the sharpening base is rotatably coupled with the base, and the base and the sharpening base are connected through a ratchet structure. The pencil sharpener capable of prompting sharpening according to claim 1, wherein the base is provided with a pivot unit, and the pivot portion is pivotally connected with the pivot unit of the base. The sharpener capable of prompting sharpening according to any one of claims 1 to 8, wherein the buckle structure includes a buckle protrusion, and the buckle protrusion faces from one side of the accommodating groove The direction of the elastic arm protrudes, and the elastic arm of the prompt button is provided with a buckle hole, so that the elastic arm is buckled with the buckle protrusion through the buckle hole. The pencil sharpener capable of prompting sharpening according to claim 9, wherein the bottom of the sharpener base is provided with a stopper, the stopper extends toward the triggering member beyond the abutting surface, and the stopper extends beyond the The length of the abutting surface is greater than or equal to the overlapping length of the buckle protrusion and the buckle hole. The pencil sharpener capable of prompting sharpening according to claim 9, wherein the prompt button includes a base located in the accommodating groove, the elastic arm extends from the base, and the elastic arm is formed at a connection with the base A fulcrum, the distance of the position where the actuating portion abuts against the elastic arm relative to the fulcrum is greater than the distance between the buckle protrusion and the buckle hole abutment relative to the fulcrum. The pencil sharpener capable of prompting sharpening according to any one of claims 1 to 8, wherein the accommodating groove is provided with at least one limiting channel, the prompt button is provided with at least one guide arm, and the at least one The guiding arm and the elastic arm are spaced apart, the shape of the at least one guiding arm matches the shape of the at least one limiting channel, and the at least one guiding arm passes through the at least one limiting channel.

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