Pen point thickness adjusting mechanism and electric pencil sharpener

Abstract

The utility model relates to the technical field of pencil sharpeners, in particular to a pencil point thickness adjusting mechanism and an electric pencil sharpener. The first adjusting assembly comprises a first toothed adjusting piece and a second toothed adjusting piece which are meshed with each other, and when the first toothed adjusting piece is shifted, the second toothed adjusting piece moves along with the first toothed adjusting piece; the second adjusting assembly is provided with a connecting part and a sliding part, and the connecting part is connected with the second toothed adjusting piece and used for enabling the second adjusting assembly to move along with the second toothed adjusting piece; the pen stopping piece is arranged above the second adjusting assembly, one end of the pen stopping piece is located in the knife rest, the other end of the pen stopping piece is slidably connected with the sliding part, and movement of the second adjusting assembly drives the pen stopping piece to move upwards or downwards so as to adjust the depth of the pen point inserted into the knife rest.

Description

Technical Field

[0001] The present invention relates to the technical field of pencil sharpeners, and in particular to a pen tip thickness adjustment mechanism and an electric pencil sharpener. Background Art

[0002] Pencil sharpeners are a popular tool for sharpening pencils among students. The working method of pencil sharpeners is that when a pencil is inserted into the pen feed hole, the pen body triggers the starting contact at the opening of the pen feed hole. The starting contact is used to trigger the micro switch to connect the circuit, the motor starts working, the pen feeding mechanism feeds the pen inward, and the knife holder rotates at the same time, thereby starting to sharpen the pencil automatically. After the pencil sharpening is completed, the pen feeding mechanism retracts the pen outward, the pen body separates from the starting contact at the opening of the pen feed hole, the micro switch disconnects the circuit, and the motor stops working.

[0003] The utility model patent with the patent number ZL202320844050.2 discloses a pen tip thickness adjustment mechanism for a pencil sharpener. The patent drives the adjustment seat to move by toggling the lever on the adjustment seat, and then drives the movable rod to move. The pen rod can move closer to or farther away from the hob while moving back and forth along the length direction of the inclined channel driven by the movable rod, so as to adjust the thickness of the pen tip when sharpening the pencil. A long slot hole needs to be opened on the shell of the pencil sharpener, and one end of the lever passes through the slot hole. When the thickness of the pen tip needs to be adjusted, the user toggles the lever to move the lever along the length direction of the slot hole. The above patent can effectively adjust the thickness of the pen tip by toggling the lever. When the lever is toggled, the stroke of the lever is long, which makes the length of the slot hole long enough to meet the long stroke of the lever. However, if the size of the slot hole is too large, it will not only affect the appearance, but also foreign matter from the outside can easily enter the slot hole. The long-term accumulation of foreign matter will shorten the service life of the pencil sharpener. Utility Model Content

[0004] In view of the deficiencies or problems existing in the prior art, the present disclosure provides a pen tip thickness adjustment mechanism and an electric pencil sharpener, which can greatly reduce the probability of foreign matter entering the housing to increase its service life.

[0005] The technical solution adopted by the present disclosure to solve the above technical problems is: a pen tip thickness adjustment mechanism, comprising:

[0006] Knife holder;

[0007] The first adjusting component comprises a first toothed adjusting member and a second toothed adjusting member meshing with each other, and when the first toothed adjusting member is moved, the second toothed adjusting member moves along with the first toothed adjusting member;

[0008] A second adjustment component is provided with a connecting portion and a sliding portion, wherein the connecting portion is connected to the second toothed adjustment member and is used to make the second adjustment component move along with the second toothed adjustment member;

[0009] A pen blocking member is disposed above the second adjusting component. One end of the pen blocking member is located inside the knife rest, and the other end is slidably connected to the sliding portion. The movement of the second adjusting component drives the pen blocking member to move upward or downward to adjust the depth of the pen tip inserted into the knife rest.

[0010] As a preferred embodiment, the first toothed adjusting member is provided with a first arc segment, and a toothed structure is arranged on the inner side of the first arc segment. The second toothed adjusting member includes a first sector gear, and the first sector gear meshes with the toothed structure.

[0011] As a preferred embodiment, the second toothed adjusting member further includes a second sector gear, the radius of the second sector gear is greater than that of the first sector gear, the connecting portion of the second adjusting component is a gear, and the second sector gear meshes with the connecting portion of the second adjusting component.

[0012] As a preferred embodiment, the sliding portion and the connecting portion of the second adjusting component are integrally formed, and the sliding portion is arranged above the connecting portion.

[0013] As a preferred embodiment, the sliding portion includes a flared arc segment that expands outward and a slope provided on the upper surface of the flared arc segment. A connecting plate is arranged on the connecting portion, and the flared arc segment is arranged on the connecting plate.

[0014] As a preferred embodiment, the pen blocking member includes a blocking block and a support rod. An ink pen inlet channel for the pencil to enter is arranged inside the knife rest along the length direction. The support rod is arranged along the length direction of the ink pen inlet channel. The blocking block is located inside the knife rest and is arranged below the ink pen inlet channel. One end of the support rod is connected to the blocking block, and the other end of the support rod is slidably connected to the slope.

[0015] As a preferred embodiment, a blade is installed on the knife rest, a notch is arranged on the side wall of the ink pen inlet channel, and the side of the blade with the cutting edge is arranged at the notch for cutting the pencil at the notch.

[0016] As a preferred embodiment, the first toothed adjusting member is further provided with a second arc segment. The second arc segment is arranged outside the first arc segment, and a toggling member for toggling the first toothed adjusting member is arranged on the side of the second arc segment away from the first arc segment.

[0017] Another object of the present disclosure is to provide an electric pencil sharpener, including a housing, and the above-mentioned pen tip thickness adjusting mechanism is arranged inside the housing.

[0018] As a preferred embodiment, a fixing plate is further arranged inside the housing. A first pin shaft and a second pin shaft are arranged on the fixing plate. The second adjusting component is provided with a first through hole, and the second toothed adjusting member is provided with a second through hole. The first pin shaft and the second pin shaft respectively pass through the first through hole and the second through hole.

[0019] Compared with the existing products, since the first toothed adjusting member and the second toothed adjusting member are meshed with each other, when the first toothed adjusting member is toggled, the second toothed adjusting member moves together with the first toothed adjusting member. The user only needs to toggle the first toothed adjusting member within a small range to achieve a large-range adjustment of the first toothed adjusting member and the second toothed adjusting member, thereby driving the rotation of the second adjusting assembly, and further causing the pen blocking member to move upward or downward to adjust the sharpening degree of the pen tip. Compared with the toggle rod adjustment, when using the pen tip thickness adjustment mechanism of the present application, only a slot hole with a smaller size needs to be opened on the housing. While being aesthetically pleasing, it can effectively reduce the probability of foreign objects entering the housing; the meshing of the first toothed adjusting member and the second toothed adjusting member is similar to the transmission of gears, with a more compact structure and higher transmission power. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present application will be further described in detail below in conjunction with the drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are only drawn for the purpose of explaining the preferred embodiments and should not be used as a limitation on the scope of the present application. In addition, unless otherwise specified, the drawings only schematically show the composition or structure of the described object and may include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0021] Figure 1 is one of the structural schematic diagrams of a pen tip thickness adjustment mechanism of the present disclosure;

[0022] Figure 2 is the second structural schematic diagram of a pen tip thickness adjustment mechanism of the present disclosure;

[0023] Figure 3 is the third structural schematic diagram of a pen tip thickness adjustment mechanism of the present disclosure;

[0024] Figure 4 is the structural schematic diagram of the second toothed adjusting member of the present disclosure;

[0025] Figure 5 is the first structural schematic diagram of the second adjusting assembly of the present disclosure;

[0026] Figure 6 is the second structural schematic diagram of the second adjusting assembly of the present disclosure;

[0027] Figure 7 is the first structural schematic diagram of the connection between the support rod and the second adjusting assembly of the present disclosure;

[0028] Figure 8 is the second structural schematic diagram of the connection between the support rod and the second adjusting assembly of the present disclosure;

[0029] Figure 9 is the structural schematic diagram of the electric pencil sharpener of the present disclosure.

[0030] Description of Reference Numerals of the Drawings

[0031] 1. First toothed adjusting member; 2. Second toothed adjusting member; 3. Second adjusting assembly; 4. Poking member; 5. Tool rest; 6. Support rod; 7. First sector gear; 8. Second sector gear; 9. Pen inlet channel; 10. Connecting portion; 11. Flared arc segment; 12. Connecting plate; 13. Slope; 14. First section; 15. Second section; 16. Notch; 17. Blade; 18. Second through hole; 19. First through hole; 20. Housing; 21. Slot hole. Detailed Embodiment

[0032] In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure will be described in detail, clearly and completely below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are not used to limit the present disclosure.

[0033] Those skilled in the art should understand that in the disclosure of the present utility model, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present utility model.

[0034] Please refer to Figures 1 - 3As shown, the present disclosure provides a pen tip thickness adjustment mechanism, including: a tool holder 5; a first adjustment component, including a first toothed adjustment piece 1 and a second toothed adjustment piece 2 that are meshed with each other, when the first toothed adjustment piece 1 is moved, the second toothed adjustment piece 2 moves along with the first toothed adjustment piece 1; a second adjustment component 3, provided with a connecting portion 10 and a sliding portion, the connecting portion 10 is connected to the second toothed adjustment piece 2, and is used to make the second adjustment component 3 move along with the second toothed adjustment piece 2; a pen blocking piece, arranged above the second adjustment component 3, one end of the pen blocking piece is located inside the tool holder 5, and the other end is slidably connected to the sliding portion, and the movement of the second adjustment component 3 drives the pen blocking piece to move upward or downward, so as to adjust the depth of the pen tip inserted into the tool holder 5, and then adjust the degree of sharpening of the pen tip by the blade 17. By moving the first toothed adjusting member 1, the second toothed adjusting member 2 moves along with the first toothed adjusting member 1. The user only needs to move the first toothed adjusting member 1 in a small range to achieve a larger range of adjustment of the first toothed adjusting member 1 and the second toothed adjusting member 2, thereby driving the rotation of the second adjusting component 3, so that the pen blocking member moves upward or downward to adjust the thickness of the pen tip. Compared with the adjustment by the lever, the pen tip thickness adjustment mechanism of the present application only requires a smaller slot 21 to be opened on the shell 20, which is not only beautiful but also effectively reduces the probability of foreign matter entering the shell 20; the first toothed adjusting member 1 and the second toothed adjusting member 2 are meshed with each other, similar to the transmission of gears, and the structure is more compact and the transmission power is higher.

[0035] Please also see Figure 4 and Figure 9 As shown, in one embodiment of the present disclosure, the first toothed adjustment member 1 is provided with a first arc segment, and a toothed structure is arranged on the inner side of the first arc segment. The second toothed adjustment member 2 includes a first sector tooth 7, and the first sector tooth 7 is meshed with the toothed structure, similar to the meshing of a gear and a rack. The second toothed adjustment member 2 also includes a second sector tooth 8, and the connecting portion 10 of the second adjustment component 3 is a gear, and the second sector tooth 8 is meshed with the connecting portion 10 of the second adjustment component 3. Therefore, when the first toothed adjustment member 1 is turned, the second toothed adjustment member 2 rotates together, and the second toothed adjustment member 2 drives the second adjustment component 3 to rotate together. In particular, the radius of the second sector tooth 8 is greater than the first sector tooth 7, the first sector tooth 7 is meshed with the first toothed adjustment member 1, and the second toothed adjustment member 2 is rotated, the second sector tooth 8 is meshed with the second adjustment component 3, and the second adjustment component 3 is driven to rotate, and the radius of the first sector tooth 7 is smaller than the setting of the second sector tooth 8, which is equivalent to the pinion driving the large gear to rotate, and such a structure is more labor-saving. In addition, by setting the radius of the first sector teeth 7 to be smaller, the movement range of the first toothed adjusting member 1 can be further reduced, thereby further reducing the size of the slot 21 provided on the housing 20 .

[0036] like Figures 5 - 8As shown, further, the sliding part of the second adjusting component 3 is integrally formed with the connecting part 10, and the sliding part is arranged above the connecting part 10. Specifically, the sliding part includes a flared arc segment 11 that expands outward, and a slope 13 arranged on the upper surface of the flared arc segment 11. A connecting plate 12 is arranged on the connecting part 10, and the flared arc segment 11 is arranged on the connecting plate 12. The sliding part and the connecting part 10 rotate together with the second toothed adjusting member 2. More specifically, the slope 13 includes a first section 14 and a second section 15. The length of the first section 14 is less than that of the second section 15. The distance from the upper surface of the first section 14 to the flared arc segment 11 is equal everywhere. The second section 15 is a continuous inclined plane, and the height of the second section 15 gradually decreases from the tail of the first section 14 along the flared arc segment 11 until it is flush with the flared arc segment 11. When the second adjusting component 3 rotates, the pen blocking member slides on the first section 14 and the second section 15. Since the height of the first section 14 is higher than that of the second section 15, and the second section 15 is a continuous inclined plane, when the pen blocking member slides from the first section 14 to the second section 15, the pen blocking member moves downward, and when the pen blocking member slides from the second section 15 to the first section 14, the pen blocking member moves upward.

[0037] Please continue to refer to Figure 7 and Figure 8 As shown, furthermore, the pen blocking member includes a blocking block and a support rod 6. An ink pen inlet channel 9 for the pencil to enter is arranged along the length direction inside the tool rest 5. The support rod 6 is arranged along the length direction of the ink pen inlet channel 9. The blocking block is located inside the tool rest 5, and the blocking block is arranged below the ink pen inlet channel 9. One end of the support rod 6 is connected to the blocking block, and the other end of the support rod 6 is slidably connected to the slope 13. Specifically, a blade 17 is installed on the tool rest 5. A notch 16 is arranged on the side wall of the ink pen inlet channel 9. The side of the blade 17 with the cutting edge is arranged at the notch 16 for cutting the pencil at the notch 16. The blocking block is located at the end of the ink pen inlet channel 9. The blade 17 rotates with the tool rest 5 to cut the pencil. When the tip of the pencil is sharpened to a certain extent, the tip will touch the blocking block. By adjusting the height of the blocking block, the depth of the pencil in the ink pen inlet channel 9 is adjusted, and thus the sharpening degree of the tip of the pencil by the blade 17 is adjusted. The height of the blocking block is adjusted by the support rod 6: when the second adjusting component 3 rotates, the support rod 6 slides along the slope 13, thereby driving the up and down movement of the blocking block.

[0038] The first toothed adjusting member 1 is further provided with a second arc segment. The second arc segment is arranged outside the first arc segment. A toggling member 4 for toggling the first toothed adjusting member 1 is arranged on the side of the second arc segment away from the first arc segment. Preferably, the toggling member 4 is a toggle block.

[0039] As Figure 9As shown, the present disclosure also provides an electric pencil sharpener, including a housing 20, wherein the above-mentioned pen tip thickness adjustment mechanism is disposed in the housing 20. Specifically, a long slot 21 is provided on the housing 20, and the toggle member 4 is at least partially exposed from the slot 21. The toggle member 4 is toggled clockwise or counterclockwise to drive the first toothed adjustment member 1 to rotate.

[0040] Furthermore, a fixing plate is also provided in the shell 20, on which a hollow first pin and a second pin are provided, the second adjusting component 3 is provided with a first through hole 19, and the second toothed adjusting member 2 is provided with a second through hole 18, the first pin and the second pin pass through the first through hole 19 and the second through hole 18 respectively, and the bolts enter from the bottom of the first pin and the second pin respectively, so that the second adjusting component 3 and the second toothed adjusting member 2 are respectively limited on the first pin and the second pin, and the toggle member 4 is toggled, so that the second adjusting component 3 and the second toothed adjusting member 2 rotate around the first pin and the second pin respectively.

[0041] The present application is described in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the present application and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A nib thickness adjustment mechanism, characterized in that, Comprising: Tool rest; A first adjusting component, including a first toothed adjusting member (1) and a second toothed adjusting member (2) that mesh with each other. When the first toothed adjusting member (1) is toggled, the second toothed adjusting member (2) moves together with the first toothed adjusting member (1); A second adjusting component (3), provided with a connecting portion (10) and a sliding portion. The connecting portion (10) is connected to the second toothed adjusting member (2) for enabling the second adjusting component (3) to move together with the second toothed adjusting member (2); A pen blocking member, arranged above the second adjusting component (3). One end of the pen blocking member is located inside the tool rest (5), and the other end is slidably connected to the sliding portion. The movement of the second adjusting component (3) drives the pen blocking member to move up or down to adjust the depth of the pen tip inserted into the tool rest (5).

2. The nib thickness adjustment mechanism according to claim 1, characterized in that The first toothed adjusting member (1) is provided with a first arc segment, and a toothed structure is arranged on the inner side of the first arc segment. The second toothed adjusting member (2) includes a first sector gear (7), and the first sector gear (7) meshes with the toothed structure.

3. The nib thickness adjustment mechanism according to claim 2, characterized in that The second toothed adjusting member (2) further includes a second sector gear (8). The radius of the second sector gear (8) is greater than that of the first sector gear (7). The connecting portion (10) of the second adjusting component (3) is a gear, and the second sector gear (8) meshes with the connecting portion (10) of the second adjusting component (3).

4. The nib thickness adjustment mechanism according to claim 3, characterized in that The sliding portion of the second adjusting component (3) is integrally formed with the connecting portion (10), and the sliding portion is arranged above the connecting portion (10).

5. The nib thickness adjustment mechanism according to claim 1, characterized in that, The sliding portion includes an outwardly expanding trumpet-shaped arc segment (11) and a slope (13) arranged on the upper surface of the trumpet-shaped arc segment (11). A connecting plate (12) is arranged on the connecting portion (10), and the trumpet-shaped arc segment (11) is arranged on the connecting plate (12).

6. The pen tip thickness adjusting mechanism according to claim 5, characterized in that The pen blocking member includes a blocking block and a support rod (6). An ink pen inlet channel (9) for the pencil to enter is arranged along the length direction inside the tool rest (5). The support rod (6) is arranged along the length direction of the ink pen inlet channel (9). The blocking block is located inside the tool rest (5), the blocking block is arranged below the ink pen inlet channel (9), one end of the support rod (6) is connected to the blocking block, and the other end of the support rod (6) is slidably connected to the slope (13).

7. The nib thickness adjustment mechanism according to claim 6, characterized in that, A blade (17) is installed on the tool rest (5). A notch (16) is arranged on the side wall of the ink pen inlet channel (9). The side of the blade (17) with the cutting edge is arranged at the notch (16) for cutting the pencil at the notch (16).

8. The nib thickness adjustment mechanism according to claim 2, characterized in that The first toothed adjusting member (1) is further provided with a second arc segment. The second arc segment is arranged outside the first arc segment, and a toggling member (4) for toggling the first toothed adjusting member (1) is arranged on the side of the second arc segment away from the first arc segment.

9. An electric pencil sharpener, characterized in that, Including a housing (20), and the housing (20) is internally provided with the pen tip thickness adjusting mechanism according to any one of claims 1 to 8.

10. The electric pencil sharpener according to claim 9, characterized in that, A fixing plate is further arranged inside the housing (20). A first pin shaft and a second pin shaft are arranged on the fixing plate. The second adjusting assembly (3) is provided with a first through hole (19), and the second toothed adjusting member (2) is provided with a second through hole (18). The first pin shaft and the second pin shaft respectively pass through the first through hole (19) and the second through hole (18).

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