CN219405970U - Time-delay pencil sharpening mechanism and pencil sharpener with same - Google Patents

Abstract

The utility model discloses a time-delay pencil sharpening mechanism and a pencil sharpener with the same, wherein the time-delay pencil sharpening mechanism comprises: the pencil sharpener comprises a pencil sharpening assembly, a limit rotating disc, a driving fluted disc, a driving assembly and a linkage rotating rod, wherein the pencil sharpening assembly moves between a connecting position and a disconnecting position relative to the driving fluted disc and/or the limit rotating disc, the linkage rotating rod is simultaneously meshed with external teeth of the driving fluted disc and the limit rotating disc in the connecting position, and the linkage rotating rod is separated from at least one of the driving fluted disc and the limit rotating disc in the disconnecting position; the upper end of the vertically arranged deflector rod is connected with the linkage rotating rod; the trigger component is connected with the lower end of the deflector rod at the movable end capable of transversely moving, so that the linkage rotating rod is switched between the connection position and the disconnection position. The utility model provides a time-delay pencil sharpening mechanism which drives a linkage rotating rod to move through the reciprocating swing of a vertically arranged deflector rod, so that the transmission or disconnection of power between a driving fluted disc and a limiting rotary disc is realized, and the purpose of clutch during time-delay pencil sharpening is achieved.

Description

Time-delay pencil sharpening mechanism and pencil sharpener with same

Technical Field

The utility model relates to the technical field of automatic pencil cutters, in particular to a time-delay pencil sharpening mechanism and a pencil cutter with the time-delay pencil sharpening mechanism.

Background

The automatic pencil sharpener is also called an electric pencil sharpener, and generally drives the cutter holder to rotate by a motor, the cutter holder drives the pencil feeding assembly to feed a pencil in the rotating process, and the pencil is driven by the pencil feeding assembly to perform pencil sharpening. In the chinese patent of CN216300625U, an automatic pencil sharpener is disclosed, which has a driving fluted disc coaxially connected to the cutter holder, the driving fluted disc is coaxially and alternately arranged with a limit turntable for driving the pencil sharpener, the driving fluted disc and the external teeth of the limit turntable are meshed with a delay connection structure, the delay connection structure has clutch transmission function, so that the pencil sharpener is driven by the rotation force from the cutter holder.

In the above patent, the axial movement of the linkage rotating rod is controlled by the control box, so that the clutch of the delay connection structure is realized. However, since the structure of the control box is complicated, an alternative is required.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, the utility model provides a time-delay pencil sharpening mechanism which drives a linkage rotating rod to move through the reciprocating swing of a vertically arranged deflector rod, so that the transmission or disconnection of power between a driving fluted disc and a limiting rotary disc is realized, and the purpose of clutch during time-delay pencil sharpening is achieved.

The utility model also provides a pencil sharpener with the time-delay pencil sharpening mechanism.

The technical scheme adopted by the utility model is as follows: provided is a time-lapse pencil sharpening mechanism including:

a pencil sharpening assembly;

the limit rotating disc is used for driving the pen feeding assembly to feed and withdraw a pen;

the driving fluted disc is connected with the pencil sharpening assembly and is positioned below the limiting rotary disc;

the driving assembly is positioned below the pencil sharpening assembly and is used for driving the pencil sharpening assembly to rotate;

the linkage rotating rod moves between a connection position and a disconnection position relative to the driving fluted disc and/or the limiting turntable, and in the connection position, the linkage rotating rod is simultaneously meshed with the external teeth of the driving fluted disc and the limiting turntable, and in the disconnection position, the linkage rotating rod is disconnected with at least one of the driving fluted disc and the limiting turntable;

the upper end of the vertically arranged deflector rod is connected with the linkage rotating rod;

and the trigger assembly is connected with the lower end of the deflector rod at the movable end capable of transversely moving and is used for driving the deflector rod to swing so as to enable the linkage rotating rod to be switched between a connection position and a disconnection position.

In the utility model, the driving gear disc and the limiting turntable are connected or disconnected by the driving rod which is arranged in the vertical direction and reciprocates, the driving rod is driven to swing by the movable end of the triggering component which can transversely move, and the driving rod drives the linkage rod to move in the swinging process, so that the transmission or disconnection of power between the driving gear disc and the limiting turntable is realized. Compared with the prior art, the power transmission mode of the time-delay pencil sharpening mechanism is simple and novel, and is easy to popularize and use.

According to one embodiment of the utility model, the trigger assembly comprises a mounting table, a rack sliding block, a driving gear and a transmission rod, wherein the rack sliding block is in sliding connection with the mounting table, the driving gear is rotatably mounted on the mounting table, the transmission rod is coaxially arranged with the driving gear, the upper end of the transmission rod is abutted with a pen blocking block on the pen cutting assembly, the driving gear is in meshed connection with the rack sliding block and is used for driving the rack sliding block to transversely move, and the rack sliding block is connected with the deflector rod; the driving gear is meshed with the rack sliding block to form a gear-rack structure, and the rack sliding block is driven by the rotation force of the driving gear to transversely move relative to the mounting table, namely, the rack sliding block is the moving end of the trigger assembly.

According to one embodiment of the utility model, the rack sliding block is provided with a matching part, and the lower end of the deflector rod is in sliding limit fit with the matching part; the lower end of the shifting lever is driven to swing by utilizing the transverse movement of the rack sliding block, and the upper end of the shifting lever reversely swings to drive the linkage rotating rod to move.

According to one embodiment of the utility model, a second elastic piece is arranged between the mounting table and the rack sliding block.

According to one embodiment of the present utility model, there is further provided a holder cover provided at the outer circumference of the pencil sharpener assembly, the upper end of which is connected with the upper cover in the housing.

According to one embodiment of the utility model, the deflector rod is vertically arranged in the tool rest cover, and the upper end of the deflector rod extends out of the tool rest cover to be connected with the linkage rotating rod.

According to one embodiment of the utility model, the driving assembly comprises a driving motor, a reduction gear set and a coupler used for being connected with the pencil sharpening assembly, the transmission rod can transmit torque relative to the coupler and can slide along the axial direction, and the upper end of the transmission rod passes through the coupler to be connected with the pencil blocking block.

According to one embodiment of the utility model, the transmission rod is movable relative to the drive gear between a connected state in which it is in pressure abutment with the drive gear and is capable of transmitting torque; in the disconnected state, the transmission rod and the driving gear relatively rotate.

According to one embodiment of the utility model, the deflector rod is sleeved with a first elastic piece, and the first elastic piece has an elastic trend for enabling the deflector rod to be kept in pressure abutting connection with the linkage rotating rod.

A pencil sharpener comprising any one of the delay pencil sharpening mechanisms.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of a pencil sharpener according to an embodiment of the present utility model;

FIG. 2 is a partial block diagram of a pencil sharpener according to an embodiment of the present utility model;

FIG. 3 is a perspective view of a time delay pencil sharpener according to an embodiment of the present utility model;

FIG. 4 is a partial block diagram of a delay pencil sharpener in accordance with an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a delay pencil sharpener in an embodiment of the present utility model;

FIG. 6 is a rear perspective view of a time delay pencil sharpener in accordance with an embodiment of the present utility model;

FIG. 7 is a schematic diagram illustrating the connection of the driving assembly according to an embodiment of the present utility model;

FIG. 8 is a schematic diagram of a trigger assembly according to an embodiment of the present utility model;

FIG. 9 is a perspective view of a trigger assembly according to an embodiment of the present utility model;

FIG. 10 is a side view of a trigger assembly according to an embodiment of the present utility model;

fig. 11 is a side view of a trigger assembly in another embodiment of the present utility model.

The reference numerals in the figures illustrate:

1. a housing; 2. a head cover; 3. a pencil sharpening assembly; 4. a limit turntable; 5. driving the fluted disc; 6. a linkage rotating rod; 7. a deflector rod; 8. a drive assembly; 9. a trigger assembly;

11. an upper cover; 12. a middle cover; 13. a support table;

31. a pen blocking block;

71. a first elastic member;

81. a driving motor; 82. a reduction gear set; 83. a coupling;

91. a mounting table; 92. a transmission rod; 93. a drive gear; 94. a rack slide block; 95. a mating portion; 96. and a second elastic member.

Description of the embodiments

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

As shown in fig. 1 to 11, in the present embodiment, a time-lapse pencil sharpening mechanism is disclosed, comprising:

a pencil sharpening assembly 3;

the limit turntable 4 is used for driving the pen feeding assembly to feed and retract pens;

the driving fluted disc 5 is connected with the pencil sharpening assembly 3 and is positioned below the limit turntable 4;

a driving assembly 8, which is positioned below the pencil sharpening assembly 3 and is used for driving the pencil sharpening assembly 3 to rotate;

a linkage rotating rod 6 which moves relative to the driving fluted disc 5 and/or the limit rotating disc 4 between a connection position and a disconnection position, wherein in the connection position, the linkage rotating rod 6 is simultaneously meshed with the external teeth of the driving fluted disc 5 and the limit rotating disc 4, and in the disconnection position, the linkage rotating rod 6 is disconnected with at least one of the driving fluted disc 5 and the limit rotating disc 4;

the upper end of the vertically arranged deflector rod 7 is connected with the linkage rotating rod 6;

and the trigger assembly 9, the movable end of which can move transversely is connected with the lower end of the deflector rod 7, and is used for driving the deflector rod 7 to swing so as to enable the linkage rotating rod 6 to switch between a connection position and a disconnection position.

As shown in fig. 1 and 2, in the present embodiment, the time delay pencil sharpener is installed in a housing 1 of the pencil sharpener, the housing 1 includes an upper cover 11, a middle cover 12 and a supporting table 13, wherein a waste chip cavity is formed by covering between the upper cover 11 and the middle cover 12. An installation space for installing the reduction gear set 82 in the driving assembly 8 is formed between the middle cover 12 and the support table 13.

Further, in this embodiment, the driving fluted disc 5 and the limiting turntable 4 are both installed in the upper cover 11, wherein the driving fluted disc 5 can rotate relative to the upper cover 11, and when the upper cover 11 seals the waste dust cavity, the upper end of the cutter holder in the pencil assembly 3 is connected with the driving fluted disc 5 through a shaft capable of transmitting torque. The limiting turntable 4 and the driving fluted disc 5 are coaxially arranged, and the outer ring edges of the limiting turntable 4 and the driving fluted disc 5 are both provided with gear structures, and the limiting turntable 4 can rotate relative to the driving gear 93. A linked rotating lever 6 is vertically installed in the upper cover 11, and the linked rotating lever 6 can rotate relative to the upper cover 11. When the linkage rotating rod 6 is positioned at the connecting position, the linkage rotating rod 6 is simultaneously meshed and connected with the driving fluted disc 5 and the limiting turntable 4, and is used for driving the limiting turntable 4 to synchronously rotate through the driving fluted disc 5 and the linkage rotating rod 6 by using the autorotation force from the pencil sharpening assembly 3. Thereby enabling the limit turntable 4 to drive the pen feeding assembly to do pen feeding and retracting actions.

Further, in this embodiment, as shown in fig. 10, the upper end of the shift lever 7 is inserted into the linkage rotating lever 6, and when the shift lever 7 swings, the linkage rotating lever 6 is driven to move from the connection position to the disconnection position, and the linkage rotating lever 6 follows the shift lever 7 to swing synchronously and outwards, so that the linkage rotating lever 6 is disconnected from the limit turntable 4 and keeps engaged connection with the driving fluted disc 5. In another embodiment, the linkage rotating rod 6 synchronously swings outwards along with the deflector rod 7, so that the linkage rotating rod 6 is simultaneously separated from the limit rotating disc 4 and the driving fluted disc 5.

Further, in another embodiment, as shown in fig. 11, the upper end of the shift lever 7 abuts against the linkage rotating rod 6, and when the shift lever 7 swings, the bottom end of the linkage rotating rod 6 is driven to deviate outwards, so that the linkage rotating rod 6 is separated from the driving fluted disc 5 and keeps engaged connection with the limit turntable 4.

Further, the trigger assembly 9 may have a driving force to drive the moving end thereof to move laterally. For example, the triggering component 9 adopts an electromagnet which is horizontally arranged, and the electromagnetic attraction force of the electromagnet is utilized to drive the shift lever 7 to transversely move. The trigger assembly 9 may also be a linkage assembly, which converts the downward movement of the pen-blocking block 31 into a lateral movement of the moving end of the trigger assembly 9.

Specifically, as shown in fig. 8 and 9, in this embodiment, the trigger assembly 9 includes a mounting table 91, a rack slider 94 slidably connected with the mounting table 91, a driving gear 93 rotatably mounted on the mounting table 91, and a transmission rod 92 coaxially disposed with the driving gear 93, wherein an upper end of the transmission rod 92 abuts against the pencil blocking block 31 on the pencil sharpening assembly 3, the driving gear 93 is engaged with the rack slider 94, and is used for driving the rack slider 94 to move laterally, and the rack slider 94 is connected with the deflector rod 7.

Further, in the present embodiment, the mount 91 is fixedly mounted on the bottom of the support table 13, and a space for mounting the rack slider 94 is formed between the support table 13 and the mount 91. The rack slider 94 is laterally slidably mounted on the mounting table 91, and the rack slider 94 has a rack structure thereon, the driving gear 93 is rotatably mounted on the mounting table 91, and external teeth of the driving gear 93 are engaged with the rack. The driving gear 93 is used for driving the rack sliding block 94 to transversely move, so that the deflector rod 7 is driven to swing.

Specifically, the rack slider 94 is provided with a matching portion 95, and the lower end of the shift lever 7 is slidably and limitedly matched with the matching portion 95.

Further, in the present embodiment, the engaging portion 95 is a waist-shaped hole provided on the rack slider 94, with which the lower end of the lever 7 is slidably engaged.

Specifically, in this embodiment, as shown in fig. 9, a second elastic member 96 is disposed between the mounting table 91 and the rack slider 94, one end of the second elastic member 96 abuts against the inner wall of the mounting table 91, the other end abuts against the rack slider 94, and the second elastic member 96 has an elastic tendency to keep the rack slider 94 at an initial position, in which the moving end of the trigger assembly 9 does not apply a lateral force to the shift lever 7, the shift lever 7 is in a vertical state, and the linkage rotating lever 6 is in a connecting position.

Specifically, the time-delay pencil sharpening mechanism further comprises a cutter rest cover 2, wherein the cutter rest cover 2 is arranged on the periphery of the pencil sharpening assembly 3, the upper end of the cutter rest cover is connected with an upper cover 11 in the shell 1, the deflector rod 7 is vertically arranged in the cutter rest cover 2, and the upper end of the deflector rod 7 extends out of the cutter rest cover 2 and is connected with the linkage rotating rod 6.

Specifically, as shown in fig. 4, the driving assembly 8 includes a driving motor 81, a reduction gear set 82, and a coupling 83 for connecting with the pencil sharpening assembly 3, the transmission rod 92 can transmit torque relative to the coupling 83 and can slide along the axial direction, and the upper end of the transmission rod 92 passes through the coupling 83 to be connected with the pencil blocking block 31.

Further, in the present embodiment, the driving motor 81 is fixedly installed on the supporting table 13, the motor shaft of the driving motor 81 is provided with a spur gear, and the reduction gear set 82 is fixedly installed on the supporting table 13. Wherein, the straight gear is engaged with the input gear of the reduction gear set 82, and the output gear of the reduction gear set 82 is coaxially arranged with the coupling 83. The coupler 83 is hollow, and the upper end of the coupler 83 extends into the scrap cavity and is spliced with the lower end of the tool rest in the pencil sharpening assembly 3, so that torque-transmitting connection is realized.

Further, in the present embodiment, the upper end of the transmission rod 92 passes through the supporting table 13 and the coupling 83, and extends into the pen-blocking block 31 on the tool rest and is connected to the pen-blocking block 31.

Specifically, the transmission rod 92 is movable between a connected state and a disconnected state with respect to the drive gear 93, and in the connected state, the transmission rod 92 is in pressure abutment with the drive gear 93 and can transmit torque; in the off state, the transmission rod 92 and the driving gear 93 rotate relatively, the shift lever 7 is sleeved with a first elastic member 71, and the first elastic member 71 has an elastic tendency to enable the shift lever 7 to keep pressure abutting with the linkage rotating rod 6.

Further, in this embodiment, the inner wall of the coupling 83 is provided with an internal spline structure, the driving rod 92 is provided with an external spline structure adapted to the internal spline, and by using the cooperation of the internal spline and the external spline, the driving rod 92 can move axially relative to the coupling 83, and simultaneously can maintain the transmission of torque, so that the driving rod 92 and the coupling 83 rotate coaxially. Therefore, the upper end of the transmission rod 92 can rotate with respect to the damper block.

Further, in this embodiment, a boss is disposed on the driving rod 92, and when the bottom surface of the boss is in pressure abutment with the driving gear 93, the friction between the driving rod 92 and the driving gear 93 increases, and the driving rod 92 drives the driving gear 93 to rotate synchronously, so that the driving gear 93 drives the rack slider 94 to move laterally.

In this embodiment, the action principle of the time delay pencil sharpener is as follows:

after the pencil is inserted into the pencil inlet hole on the upper cover 11, the pencil body triggers the sliding block, and the sliding block triggers the pencil inlet switch through the connecting rod. The control circuit in the time delay pencil sharpening mechanism receives a coupling signal from a pencil feeding switch, controls a driving motor 81 in a driving assembly 8 to work, a motor shaft of the driving motor 81 drives a reduction gear set 82, and an output gear in the reduction gear set 82 drives the pencil sharpening assembly 3 to rotate by utilizing the connection of a coupler 83. The knife rest in the pencil sharpening assembly 3 drives the driving fluted disc 5 to synchronously rotate, and the linkage rotating rod 6 at the connecting position is simultaneously meshed and connected with the limiting rotary disc 4 and the driving fluted disc 5, so that the limiting rotary disc 4 drives the pencil feeding assembly to perform pencil feeding action. The pencil feeding assembly drives the pencil to automatically feed the pencil, and the pencil enters the pencil sharpening assembly 3 in the tool rest for sharpening.

After the pencil advances and cuts the nib of preset thickness, the pencil nib drives the pen blocking block 31 to move downwards, the pen blocking block 31 drives the transmission rod 92 to move downwards, and the transmission rod 92 presses the driving gear 93, so that the pencil nib and the transmission rod are switched from the disconnected state to the connected state. The transmission rod 92 synchronously rotates along with the coupling 83 to drive the driving gear 93 to synchronously rotate, the driving gear 93 drives the rack sliding block 94 to transversely move, the second elastic piece 96 compresses, the rack sliding block 94 drives the deflector rod 7 to swing, the deflector rod 7 drives the linkage rotating rod 6 to move from the connecting position to the disconnecting position, the linkage rotating rod 6 is separated from the limiting turntable 4, and the pen feeding assembly stops pen feeding when power transmitted by the driving fluted disc 5 is lost. At this time, the pencil enters a time delay pencil sharpening stage.

Finally, the motor shaft of the driving motor 81 reversely rotates, the rack sliding block 94 resets, the rack sliding block 94 drives the deflector rod 7 to move, and the deflector rod 7 drives the linkage rotating rod 6 to reset from the disconnection position to the connection position. The linkage rotating rod 6 is simultaneously connected with the limit rotating disc 4 and the driving fluted disc 5 in a meshed manner, and the pen feeding assembly receives power transmitted by the driving fluted disc 5 to do pen retreating action so as to drive the pencil to retreat.

In another embodiment, as shown in connection with fig. 1, a pencil sharpener is disclosed that includes the time-lapse pencil sharpening mechanism described in this embodiment.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A time delay pencil sharpener, comprising:

a pencil sharpening assembly (3);

the limit rotating disc (4) is used for driving the pen feeding assembly to feed and withdraw a pen;

the driving fluted disc (5) is connected with the pencil sharpening assembly (3) and is positioned below the limit rotating disc (4);

a driving assembly (8) which is positioned below the pencil sharpening assembly (3) and is used for driving the pencil sharpening assembly (3) to rotate;

a linkage rotating rod (6) which moves relative to the driving fluted disc (5) and/or the limiting rotary disc (4) between a connecting position and a disconnecting position, wherein in the connecting position, the linkage rotating rod (6) is simultaneously meshed with the external teeth of the driving fluted disc (5) and the limiting rotary disc (4), and in the disconnecting position, the linkage rotating rod (6) is disconnected with at least one of the driving fluted disc (5) and the limiting rotary disc (4);

the upper end of the vertically arranged deflector rod (7) is connected with the linkage rotating rod (6);

the trigger assembly (9) is connected with the lower end of the deflector rod (7) at the movable end capable of transversely moving and is used for driving the deflector rod (7) to swing so as to enable the linkage rotating rod (6) to be switched between a connection position and a disconnection position.

2. The time delay pencil sharpener of claim 1, wherein: the trigger assembly (9) comprises a mounting table (91), a rack sliding block (94) which is in sliding connection with the mounting table (91), a driving gear (93) which is rotatably arranged on the mounting table (91) and a transmission rod (92) which is coaxially arranged with the driving gear (93), wherein the upper end of the transmission rod (92) is abutted to a pen blocking block (31) on the pencil sharpening assembly (3), the driving gear (93) is meshed with the rack sliding block (94) and used for driving the rack sliding block (94) to transversely move, and the rack sliding block (94) is connected with the deflector rod (7).

3. The time delay pencil sharpener of claim 2, wherein: the rack sliding block (94) is provided with a matching part (95), and the lower end of the deflector rod (7) is in sliding limit matching with the matching part (95).

4. The time delay pencil sharpener of claim 2, wherein: a second elastic piece (96) is arranged between the mounting table (91) and the rack sliding block (94).

5. The time delay pencil sharpener of claim 1, wherein: the pencil sharpener further comprises a pencil sharpener frame cover (2), the pencil sharpener frame cover (2) is arranged on the periphery of the pencil sharpener assembly (3), and the upper end of the pencil sharpener frame cover is connected with an upper cover (11) in the outer shell (1).

6. The time-lapse pencil sharpener of claim 5 wherein: the deflector rod (7) is vertically arranged in the tool rest cover (2), and the upper end of the deflector rod (7) extends out of the tool rest cover (2) to be connected with the linkage rotating rod (6).

7. The time delay pencil sharpener of claim 2, wherein: the driving assembly (8) comprises a driving motor (81), a reduction gear set (82) and a coupler (83) used for being connected with the pencil sharpening assembly (3), the transmission rod (92) can transmit torque and can axially slide relative to the coupler (83), and the upper end of the transmission rod (92) penetrates through the coupler (83) to be connected with the pencil blocking block (31).

8. The time delay pencil sharpener of claim 7, wherein: the transmission rod (92) moves between a connection state and a disconnection state relative to the driving gear (93), and in the connection state, the transmission rod (92) is in pressure abutting connection with the driving gear (93) and can transmit torque; in the disconnected state, the transmission rod (92) and the driving gear (93) rotate relatively.

9. The time delay pencil sharpener of claim 1, wherein: the driving lever (7) is sleeved with a first elastic piece (71), and the first elastic piece (71) has an elastic tendency that the driving lever (7) is kept in pressure abutting connection with the linkage rotating rod (6).

10. A pencil sharpener, characterized in that: a time delay pencil sharpener comprising the mechanism of any one of claims 1-9.