Pencil sharpener

Abstract

The utility model relates to a pencil sharpener which comprises a connecting gear used for controlling the rotating direction so that a pencil can be fed and withdrawn conveniently. The pressing piece is used for pressing the connecting gear to trigger pencil feeding; the transmission rod is used for jacking the connecting gear to trigger pen withdrawing; the connecting gear can move up and down, the connecting gear comprises a gear part and a mounting shaft, a clamping groove is formed in the mounting shaft, the connecting gear further comprises an elastic clamping piece, and the clamping piece is matched with the clamping groove to be used for locking or unlocking the connecting gear. The pencil sharpener has the advantages that the pencil sharpener not only can be used for triggering pencil feeding, but also can be used for triggering pencil retreating, meanwhile, the clamping groove and the clamping piece are matched during pencil retreating, so that the connecting gear does not fall off, and the stability of pencil retreating is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of stationery, in particular to a pencil sharpener. Background Art

[0002] An electric pencil sharpener is a common stationery product, which consists of a shell assembly, a blade holder assembly, a drive assembly and a power supply assembly, wherein: the blade holder assembly, the drive assembly, the power supply assembly, etc. are arranged in the internal space of the shell assembly; the drive assembly is composed of components such as a motor and a gear box, wherein the motor is electrically connected to the power supply assembly, and the gear box is transmission-connected to the motor and the blade holder assembly; thus, the power of the motor is transmitted to the blade holder, driving the blade on the blade holder to rotate, and finally completing the pencil sharpening process.

[0003] In the prior art, the electric pencil sharpener can automatically advance and retract the pencil, but is unstable during use, especially when retracting the pencil, it is easy to be interrupted, resulting in repeated operations of retracting and sharpening the pencil. Utility Model Content

[0004] An object of the present application is to provide a pencil sharpener that can improve the stability of pencil retraction.

[0005] The technical solution adopted in this application is: a pen advance and retract trigger device, comprising

[0006] Connecting gears to control the direction of rotation for easy pen advance and retract;

[0007] A pressing piece, used for pressing down the connecting gear to trigger the pen feeding;

[0008] Transmission rod, used for pushing up the connecting gear to trigger the pen to retract;

[0009] The connecting gear can move up and down, and comprises a gear part and a mounting shaft, on which a card slot is arranged; and also comprises an elastic card piece, which cooperates with the card slot to lock or unlock the connecting gear.

[0010] Compared with the prior art, the advantage of the present application is that it can be used for triggering both pen advancement and pen retraction, and at the same time, when the pen is retracted, the card slot and the card member cooperate so that the connecting gear does not fall, thereby ensuring the stability of pen retraction.

[0011] In some embodiments of the present application, the top of the mounting shaft is conical.

[0012] In some embodiments of the present application, a trigger member is further included, the mounting shaft is passed through the trigger member, the clamping member is arranged outside the trigger member, the pressing member is arranged above the trigger member, and the transmission rod is arranged below the trigger member.

[0013] Further, the trigger member includes an upper plate and a lower plate. The top of the upper plate abuts against the pressing member, and both ends of the mounting shaft pass through the upper plate and the lower plate respectively; a guiding tube is provided on the upper plate, a part of the mounting shaft is arranged on the guiding tube, a notch is provided on the guiding tube, and a part of the clamping member is arranged in the notch; a compression spring is provided between the upper plate and the gear portion, and the compression spring is sleeved on the mounting shaft.

[0014] Further, the upper part of the trigger member is provided with a mounting post and a stop block. The clamping member is a torsion spring, the torsion spring is sleeved on the mounting post, one end of the torsion spring is arranged in the notch, and the other end abuts against the stop block.

[0015] In some embodiments of the present application, a pushing member for resetting the clamping member is provided outside the mounting shaft; further including a mounting seat, and the pushing member is arranged on the mounting seat; the cross-section of the pushing member gradually increases from bottom to top.

[0016] A pencil sharpener includes a lower shell and a cutter holder assembly. The cutter holder assembly includes a pen feeding assembly mounting seat, and a part of the lower shell is sleeved on the pen feeding assembly mounting seat; a mounting groove is provided on the pen feeding assembly mounting seat, a mounting block protruding inward is provided on the lower shell, and the mounting block is arranged in the mounting groove; a clamping block protruding outward is provided on the mounting groove, and a fixing groove cooperating with the clamping block is provided on the mounting block; the cutter holder assembly includes a blade, and the cutting direction of the blade is the same as the mounting and locking direction of the pen feeding assembly mounting seat.

[0017] Further, it further includes the above-mentioned pen advancing and retracting trigger device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of Embodiment 1 of the present utility model;

[0019] Figure 2 is a schematic structural diagram of Embodiment 1 of the present utility model Figure 2 ;

[0020] Figure 3 is a schematic structural diagram of the trigger member of Embodiment 1 of the present utility model;

[0021] Figure 4 is a schematic structural diagram of Embodiment 1 of the present utility model with a lower shell;

[0022] Figure 5 is Figure 4 the enlarged view of Part A in

[0023] Figure 6 is a schematic structural diagram of Embodiment 2 of the present utility model;

[0024] Figure 7 is a schematic structural diagram of the lower shell of Embodiment 2 of the present utility model.

[0025] In the figure: 1. Connecting gear; 11. Gear part; 12. Mounting shaft; 13. Card slot; 2. Pressing part; 3. Transmission rod; 4. Card part; 5. Mounting seat; 51. Pushing part; 6. Trigger part; 61. Upper plate; 62. Lower plate; 63. Guide tube; 631. Notch; 64. Mounting post; 65. Stop block; 66. Compression spring; 7. Lower shell; 71. Mounting block; 72. Fixed slot; 8. Tool rest assembly; 81. Mounting seat for pen feeding assembly; 82. Mounting slot; 83. Locking block; 84. Blade; 9. Pen feeding assembly; 91. Driving gear; 92. Driven gear; 93. Pen feeding rubber roller; 10. Reversing gear. Detailed implementation mode

[0026] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined utility model purpose, the following combines the drawings and preferred embodiments to detail the specific implementation mode, structure, features and their effects of the present invention as follows.

[0027] Embodiment 1:

[0028] A pen advancing and retracting triggering device provided in this embodiment, as shown in Figure 1 , Figure 2 , Figure 3 , includes

[0029] A connecting gear 1 for controlling the rotation direction to facilitate pen advancing and retracting;

[0030] A pressing part 2 for pressing down the connecting gear 1 to trigger pen advancing;

[0031] A transmission rod 3 for pushing up the connecting gear 1 to trigger pen retracting;

[0032] The connecting gear 1 can move up and down. The connecting gear 1 includes a gear part 11 and a mounting shaft 12, and a card slot 13 is provided on the mounting shaft 12; it also includes an elastic card part 4, and the card part 4 cooperates with the card slot 13 to lock or unlock the connecting gear 1. When advancing the pen, the pressing part 2 presses down the connecting gear 1, so that the connecting gear 1 controls the rotation direction to be the pen advancing direction; when retracting the pen, the transmission rod 3 pushes the connecting gear 1 to move up, so that the connecting gear 1 controls the rotation direction to be the pen retracting direction. After the mounting shaft 12 rises, the card slot 13 rises synchronously, so that the card part 4 is stuck into the card slot 13, which can prevent the connecting gear 1 from falling after losing the thrust of the transmission rod 3 and ensure the reliability of pen retracting.

[0033] To facilitate the entry of the card part 4, the top of the mounting shaft 12 is conical. The conical design makes the card part 4 not get stuck at the top of the mounting shaft 12, and the card part 4 can slide down along the conical shape and enter the card slot 13 along the side wall of the mounting shaft 12.

[0034] To ensure reliable pressing of the pressing member 2, a triggering member 6 is further included. The mounting shaft 12 is passed through the triggering member 6. The clamping member 4 and the pushing member 51 are arranged outside the triggering member 6. The pressing member 2 is arranged above the triggering member 6, and the transmission rod 3 is arranged below the triggering member 6. The top end of the triggering member 6 abuts against the pressing member 2. The triggering member 6 is used to provide a mounting position and improve protection. The triggering member 6 can transmit the movement of the pressing member 2 to the connecting gear 1, so as to facilitate the connecting gear 1 to change the meshing object and realize the in-and-out commutation of the pen barrel.

[0035] To ensure the reliability of the triggering member 6, as Figure 4 , Figure 5 shown, the triggering member 6 includes an upper plate 61 and a lower plate 62. The top of the upper plate 61 abuts against the pressing member 2. Both ends of the mounting shaft 12 are respectively passed through the upper plate 61 and the lower plate 62. The gear portion 11 is arranged between the upper plate 61 and the lower plate 62. A guiding tube 63 is arranged on the upper plate 61. A part of the mounting shaft 12 is passed through the guiding tube 63. A notch 631 is arranged on the guiding tube 63. A part of the clamping member 4 is arranged in the notch 631. A compression spring 66 is arranged between the upper plate 61 and the gear portion 11. The compression spring 66 is sleeved on the mounting shaft 12. The design of the guiding tube 63 provides movement guidance for the mounting shaft 12 in the guiding tube 63. The notch 631 is used for the insertion of the clamping member 4, so as to facilitate clamping into the card slot 13. The design of the compression spring 66 can make the connecting gear 1 in a compressed state, ensuring that the connecting gear 1 can move synchronously with the triggering member 6 without external force.

[0036] To ensure reliable installation of the clamping member 4, the upper part of the triggering member 6 is provided with a mounting post 64 and a stop block 65. The clamping member 4 is a torsion spring. The torsion spring is sleeved on the mounting post 64. One end of the torsion spring is arranged in the notch 631 and partially extends outside the notch 631, and the other end abuts against the stop block 65. The clamping member 4 adopts a torsion spring, which has a low cost. One end of the torsion spring is in the notch 631, and the other end abuts against the stop block 65, so that one end of the torsion spring can have a movement tendency towards the inside of the notch 631.

[0037] To reset the connecting gear 1, a pushing member 51 for resetting the clamping member 4 is arranged outside the mounting shaft 12. After the pen retraction is completed, the clamping member 4 is pushed out of the card slot 13 through the pushing member 51, so that the connecting gear 1 can be freely reset.

[0038] To provide a mounting position, a mounting seat 5 is further included. The pushing member 51 is arranged on the mounting seat 5. The cross-section of the pushing member 51 gradually increases from bottom to top. The cross-section of the pushing member 51 gradually increases, that is, smaller at the bottom and larger at the top, so that during the upward resetting process of the connecting gear 1, the clamping member 4 is gradually pushed out of the card slot 13 by the pushing member 51.

[0039] The pen feeding assembly 9 is used to control the advancement and retraction of the pen barrel; the pen feeding assembly 9 includes a driving gear 91, a driven gear 92, and a pair of pen feeding rubber rollers 93. The driving gear 91 rotates actively, and its power is provided by a motor. The driven gear 92 is used to drive the rotation of the pen feeding rubber rollers 93.

[0040] The reversing gear 10 is used to change the rotation direction of the driven gear 92; the reversing gear 10 meshes with the driven gear 92.

[0041] During use, the pressing member 2 presses down the upper plate 61, causing the triggering member 6 to move downward synchronously with the connecting gear 1, so that the connecting gear 1 meshes with the driven gear 92 and the driving gear 91. The driven gear 92 drives the pen feeding rubber rollers 93 to rotate forward for pen feeding; after the pen tip is sharpened, the transmission rod 3 pushes up the mounting shaft 12, driving the connecting gear 1 to move upward synchronously, so that the connecting gear 1 meshes with the reversing gear 10 and the driving gear 91. The driven gear 92 drives the pen feeding rubber rollers 93 to rotate reversely for pen retraction. During the upward movement of the mounting shaft 12, the triggering member 6 remains stationary, and the card slot 13 moves upward synchronously and will pass through the notch 631 on the guide tube 63. The clamping member 4 will snap into the card slot 13 to prevent the mounting shaft 12 from falling and maintain the pen retraction state; during pen retraction, the pressing member 2 will gradually reset as the pen barrel retracts, causing the triggering member 6 to gradually rise and reset synchronously. The clamping member 4 also rises with the triggering member 6. During the upward movement of the clamping member 4, it will abut against the pushing member 51, and the pushing member 51 is smaller at the bottom and larger at the top, and will gradually push the clamping member 4 out of the card slot 13, causing the connecting gear 1 to reset relative to the triggering member 6 to ensure reliable use next time.

[0042] Embodiment 2:

[0043] A pencil sharpener provided in this embodiment, as Figure 4 , Figure 6 , Figure 7 shown, includes a lower housing 7 and a cutter holder assembly 8. The cutter holder assembly 8 includes a pen feeding assembly mounting seat 81. The lower housing 7 is partially sleeved on the pen feeding assembly mounting seat 81; an installation groove 82 is provided on the pen feeding assembly mounting seat 81, and an inwardly protruding mounting block 71 is provided on the lower housing 7. The mounting block 71 is arranged in the installation groove 82; an outwardly protruding clamping block 83 is provided on the installation groove 82, and a fixing groove 72 cooperating with the clamping block 83 is provided on the mounting block 71. Part of the installation groove 82 communicates with the outside from below. The lower housing 7 and the pen feeding assembly mounting seat 81 are used for internal protection. The lower housing 7 and the pen feeding assembly mounting seat 81 are installed through the cooperation of the installation groove 82 and the mounting block 71, which is convenient for disassembly and maintenance; the cooperation of the clamping block 83 and the fixing groove 72 can further improve the installation reliability of the lower housing 7 and the pen feeding assembly mounting seat 81.

[0044] To ensure reliable installation of the lower shell 7 and the pen-in component mounting base 81, the tool rest assembly 8 includes a blade 84, and the cutting direction of the blade 84 is the same as the installation locking direction of the pen-in component mounting base 81. The working direction of the blade 84 for cutting the pen tip is the same as the installation rotation direction of the lower shell 7 and the pen-in component mounting base 81, so that the cutting rotation of the blade 84 will not affect the installation of the lower shell 7 and the pen-in component mounting base 81.

[0045] It further includes the pen-in and pen-out triggering device in Embodiment 1. The transmission rod 3 is arranged inside the lower shell 7, and the connecting gear 1, the reversing gear 10, the pen-in component 9 and the triggering member 6 are arranged inside the pen-in component mounting base 81.

[0046] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A pencil sharpener, characterized in that, It includes a lower shell (7) and a tool rest assembly (8). The tool rest assembly (8) includes a pen feeding assembly mounting base (81), and the lower shell (7) is partially sleeved on the pen feeding assembly mounting base (81). An installation groove (82) is provided on the pen feeding assembly mounting base (81), and an inwardly protruding installation block (71) is provided on the lower shell (7). The installation block (71) is arranged in the installation groove (82). An outwardly protruding clamping block (83) is provided on the installation groove (82), and a fixing groove (72) for cooperating with the clamping block (83) is provided on the installation block (71). The tool rest assembly (8) includes a blade (84), and the cutting direction of the blade (84) is the same as the installation locking direction of the pen feeding assembly mounting base (81).

2. A pencil sharpener according to claim 1, characterized in that: It further includes a pen advancing / retracting triggering device. The pen advancing / retracting triggering device includes a connecting gear (1) for controlling the rotation direction to facilitate pen feeding and pen retracting; a pressing member (2) for pressing down the connecting gear (1) to trigger pen feeding; a transmission rod (3) for pushing up the connecting gear (1) to trigger pen retracting. The connecting gear (1) can move up and down. The connecting gear (1) includes a gear portion (11) and a mounting shaft (12). A clamping groove (13) is provided on the mounting shaft (12). It further includes an elastic clamping member (4), and the clamping member (4) cooperates with the clamping groove (13) to lock or unlock the connecting gear (1).

3. A pencil sharpener according to claim 2, characterized in that: The top of the mounting shaft (12) is conical.

4. A pencil sharpener according to claim 2, characterized in that: It further includes a triggering member (6). The mounting shaft (12) is passed through the triggering member (6). The clamping member (4) is arranged outside the triggering member (6). The pressing member (2) is arranged above the triggering member (6), and the transmission rod (3) is arranged below the triggering member (6).

5. A pencil sharpener according to claim 4, characterized in that: The triggering member (6) includes an upper plate (61) and a lower plate (62). The top of the upper plate (61) abuts against the pressing member (2). Both ends of the mounting shaft (12) are respectively passed through the upper plate (61) and the lower plate (62). A guiding tube (63) is provided on the upper plate (61). A part of the mounting shaft (12) is passed through the guiding tube (63). A notch (631) is provided on the guiding tube (63), and a part of the clamping member (4) is arranged in the notch (631). A compression spring (66) is arranged between the upper plate (61) and the gear portion (11), and the compression spring (66) is sleeved on the mounting shaft (12).

6. The pencil sharpener according to claim 5, characterized in that: Installation posts (64) and stoppers (65) are provided on the upper part of the triggering member (6). The clamping member (4) is a torsion spring. The torsion spring is sleeved on the installation post (64). One end of the torsion spring is arranged in the notch (631), and the other end abuts against the stopper (65).

7. A pencil sharpener according to claim 2, characterized in that: A pushing member (51) for resetting the clamping member (4) is arranged outside the mounting shaft (12). It further includes a mounting seat (5), and the pushing member (51) is arranged on the mounting seat (5). The cross-section of the pushing member (51) gradually increases from bottom to top.

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