Pencil sharpening device capable of adjusting thickness of pencil point

Abstract

A pencil sharpening device capable of adjusting the thickness of a pencil point comprises a shell, a cutting mechanism, a driving mechanism and an adjusting column, and the adjusting column is connected with the cutting mechanism and arranged in the in-out direction of a cutting channel in a sliding mode. The adjusting piece is rotationally connected with the shell or the driving mechanism and is provided with an adjusting part; the adjusting part is propped against the adjusting column; the height of the adjusting part is gradually increased in the direction of the adjusting column, the adjusting part is rotated to enable different positions of the adjusting part to abut against the adjusting column, and therefore the depth position, connected into the cutting channel, of the adjusting column is adjusted. According to the pencil sharpening device capable of adjusting the thickness of the pencil point, the adjusting column capable of sliding is arranged in the sharpening channel and matched with the adjusting part gradually rising on the adjusting piece, different positions of the adjusting part can abut against the adjusting column, and therefore the thickness of the pencil point of a sharpened pencil is adjusted.

Description

Technical Field

[0001] This utility model relates to the field of stationery products, specifically to a pen sharpening device with adjustable nib thickness. Background Technology

[0002] Pencil sharpeners are a common tool for people to use in their studies and work, improving the efficiency of sharpening pencils. In many applications, pencils of different thicknesses are needed for writing or drawing.

[0003] Therefore, there is a need to provide a pen sharpening device with adjustable nib thickness. Summary of the Invention

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An adjustable pencil sharpening device includes a housing 1 with a pencil inlet hole 11; a cutting mechanism 3 connected to the housing 1 and having a cutting channel communicating with the pencil inlet hole 11; a driving mechanism 2 connected to the cutting mechanism 3 and adapted to drive the cutting mechanism 3 to cut the pencil; an adjusting post 5 connected to the cutting mechanism 3 and slidably disposed along the inlet / outlet direction of the cutting channel; and an adjusting member 4 rotatably connected to the housing 1 or the driving mechanism 2, one end of the adjusting member 4 having an adjusting portion 41; the adjusting portion 41 abutting against the adjusting post 5; the height of the adjusting portion 41 gradually increasing towards the adjusting post 5; and by rotating the adjusting member 4, different positions of the adjusting portion 41 abutting against the adjusting post 5, thereby adjusting the depth of the adjusting post 5 entering the cutting channel.

[0006] Furthermore, it also includes an elastic element 6; the elastic element 6 connects the cutting mechanism 3 and the adjusting column 5, or connects the housing 1 and the adjusting column 5, and is adapted to give the adjusting column 5 a tendency to push against the adjusting part 41.

[0007] Furthermore, the cutting mechanism 3 is provided with a mounting hole 32 and a mounting groove 31 suitable for accommodating the installation of the elastic element 6; the shape of the mounting hole 32 is adapted to the adjusting column 5; the mounting groove 31, the mounting hole 32, and the cutting channel are connected in sequence; the adjusting column 5 passes through the mounting groove 31 and the mounting hole 32 in sequence and extends into the cutting channel.

[0008] Furthermore, the end of the adjusting column 5 away from the adjusting member 4 is a polygonal column; the mounting hole 32 is a polygonal columnar through hole.

[0009] Furthermore, the adjustment part 41 is provided with several gear positions; the adjustment column 5 has an abutment part 51 at one end near the adjustment part 41, and the shape of the end of the abutment part 51 is adapted to the shape of the gear position.

[0010] Furthermore, the gear position has a recess 411 in the middle and a protrusion 412 on each side. Several recesses 411 and protrusions 412 are connected in sequence to form a gradually rising wave surface or zigzag surface. A guide surface 511 is provided on the abutting part 51 to guide the abutting part 51 into different gear positions.

[0011] Furthermore, a limiting protrusion 52 is provided on the side of the abutment portion 51 away from the adjustment portion 41, which is suitable for restricting the adjustment column 5 from being completely submerged in the cutting mechanism 3.

[0012] Furthermore, the adjusting component 4 includes a cap body 40 and an adjusting plate 42; the cap body 40 is connected to the housing 1, and the adjusting plate 42 is located on the inner side of the cap body 40 near the end of the cutting mechanism 3; the adjusting plate 42 is annular and has two sets of adjusting parts 41, and the two adjusting parts 41 are centrally symmetrically arranged; rotating the cap body 40 can drive the abutting part 51 to simultaneously abut against different positions of the two adjusting parts 41.

[0013] Furthermore, the cap body 40 extends toward the housing 1 with a plurality of mounting buckles 44; the end of the mounting buckle 44 has a hook edge 441; the housing 1 or the drive mechanism 2 is provided with an arc-shaped elongated hole 213, the hook edge 441 passes through the elongated hole 213 and is fastened to the rear of the elongated hole 213, and the mounting buckle 44 can slide in the elongated hole 213.

[0014] In another embodiment, the adjusting member 4 includes a lever body 400; the middle part of the lever body 400 is hinged to the housing 1 or the driving mechanism 2 via a rotating shaft 43; the adjusting part 41 is provided at one end of the lever body 400 near the cutting mechanism 3, and rotating the other end of the lever body 400 can cause the abutment part 51 to abut against different positions of the adjusting part 41.

[0015] This utility model discloses an adjustable pencil tip sharpening device. By setting a sliding adjustment column in the cutting channel, and cooperating with the gradually rising adjustment part on the adjustment component, rotating the adjustment component can make different positions of the adjustment part abut against the adjustment column, thereby changing the depth of the adjustment column entering the cutting channel, so as to adjust the thickness of the pencil tip being sharpened. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an adjustable pen tip sharpening device disclosed in Embodiment 1 of this utility model.

[0018] Figure 2 for Figure 1 A cross-sectional schematic diagram of a pencil sharpening device.

[0019] Figure 3 for Figure 1 A schematic diagram of the exploded structure of a pencil sharpening device.

[0020] Figure 4 This is a schematic diagram of the rocker arm in Example 1.

[0021] Figure 5 This is a schematic diagram of the mounting ring structure in Example 1.

[0022] Figure 6 This is a schematic diagram of the adjusting component in Example 1.

[0023] Figure 7 This is a schematic diagram of the structure of the adjusting column in Example 1.

[0024] Figure 8 This is a schematic diagram of the structure of a second embodiment of the adjustable pen tip sharpening device of this utility model.

[0025] Figure 9 for Figure 8 A cross-sectional schematic diagram of a pencil sharpening device.

[0026] Figure 10 for Figure 8 A schematic diagram of the exploded structure of a pencil sharpening device.

[0027] Figure 11 This is a schematic diagram of the structure of the adjusting component in Example 2.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Housing; 11. Pen inlet hole;

[0030] 2. Drive mechanism; 21. Rocker arm; 210. Transmission end; 211. Handheld end; 212. Connecting hole; 213. Elongated hole; 22. Mounting ring; 221. Assembly block; 222. Connecting hole; 223. Limiting skirt;

[0031] 3. Cutting mechanism; 31. Mounting slot; 32. Mounting hole;

[0032] 4. Adjusting components;

[0033] 40. Hat body; 41. Adjustment part; 42. Adjustment plate; 411. Recess; 412. Protrusion; 44. Mounting buckle;

[0034] 441. Edge outlining;

[0035] 400. Lever body; 43. Rotating shaft;

[0036] 5. Adjusting column; 51. Abutting part; 511. Guide surface; 52. Limiting protrusion;

[0037] 6. Elastic components. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with the embodiments and accompanying drawings. It should be noted that the embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this invention, and should not be construed as limiting this invention.

[0039] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature; "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] Terms such as “installation,” “connection,” “linking,” and “fixing” should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components, unless otherwise explicitly defined.

[0041] Terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These are used solely for the purpose of describing the technical solutions of this invention and do not imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. For example, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium; "above," "on top," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature; "below," "under," and "below" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] This invention provides an adjustable pencil sharpening device, comprising a housing 1 with a pencil inlet hole 11; a cutting mechanism 3 connected inside the housing 1, having a cutting channel communicating with the pencil inlet hole 11; a driving mechanism 2 connected to the cutting mechanism 3, adapted to drive the cutting mechanism 3 to sharpen the pencil; an adjusting column 5 connected to the cutting mechanism 3 and slidably disposed along the inlet / outlet direction of the cutting channel; and an adjusting member 4 rotatably connected to the housing 1 or the driving mechanism 2, having an adjusting part 41 at one end; the adjusting part 41 abutting against the adjusting column 5; the height of the adjusting part 41 gradually increasing towards the inside of the housing 1; rotating the adjusting member 4, causing different positions of the adjusting part 41 to abut against the adjusting column 5, thereby adjusting the depth of the adjusting column 5 entering the cutting channel; as the adjusting column 5 slides, the depth of the pencil being sharpened entering the cutting channel is adjusted; the pencil tip thickness is inversely proportional to the depth of the pencil entering, that is, the deeper it enters, the finer the pencil tip, thus ultimately achieving the purpose of adjusting the pencil tip thickness.

[0043] The cutting mechanism 3 is assembled inside the housing 1, corresponding to the pencil inlet hole 11, and the cutting channel is connected to the pencil inlet hole 11. The cutting mechanism 3 includes a tool holder and a cutting blade (not shown in the figure). The cutting blade is mounted inside the housing 1 via the tool holder and moves in a circular motion around the cutting channel. The cutting blade is a commonly used tool in pencil sharpeners, such as a fixed blade or a rotating roller. When the pencil to be sharpened enters the cutting channel through the pencil inlet hole 11, the driving mechanism 2 drives the cutting blade to move in a circular motion. The driving mechanism 2 uses a combination of power supply, motor, and transmission gear set, or a manual rocker arm 21, etc., which are common power mechanisms in pencil sharpeners. The above is existing technology in the field of pencil sharpeners and will not be described in detail here.

[0044] The key feature of this invention is the lead adjustment structure, which will be explained below using the manual rocker arm 21 as the driving mechanism 2 as an example.

[0045] Example 1

[0046] like Figure 1-7 As shown, this invention creates a preferred embodiment of an adjustable pen tip sharpening device. An assembly hole is provided on the housing 1, and the drive mechanism 2 is installed in the assembly hole and is connected to the cutting mechanism 3 provided in the housing 1.

[0047] The drive mechanism 2 includes a rocker arm 21 and a mounting ring 22. The rocker arm 21 is connected to the housing 1 via the mounting ring 22. An assembly block 221 is provided on the mounting ring 22, and an assembly groove is provided on the side wall of the assembly hole. After the assembly block 221 passes through the assembly groove, the mounting ring 22 is rotated so that the assembly block 221 is engaged with the inner wall of the housing 1 behind the assembly hole, thus completing the assembly of the mounting ring 22. In some simple embodiments, the mounting ring 22 and the assembly hole can be replaced by a threaded connection.

[0048] A connecting hole 222 is provided in the middle of the mounting ring 22, through which the cutting mechanism 3 passes and is connected to one end of the rocker arm 21.

[0049] One end of the rocker arm 21 and the cutting mechanism 3 is the transmission end 210, and the other end is the handheld end 211. Preferably, the transmission end 210 is cylindrical and cooperates with the limiting skirt 223 preset on the mounting ring 22. The limiting skirt 223 extends from the main body of the mounting ring 22 toward the transmission end 210. The cutting mechanism 3 is connected at the center of the transmission end 210, so that during the process of shaking the pen sharpener, the cutting channel, the mounting ring 22, and the transmission end 210 are concentrically set, making the pen sharpening smoother, improving efficiency and extending the service life of the product.

[0050] Furthermore, it also includes an elastic element 6; the elastic element 6 connects the cutting mechanism 3 and the adjusting column 5, or connects the housing 1 and the adjusting column 5, and is adapted to make the adjusting column 5 have a tendency to push towards the adjusting part 41.

[0051] In this embodiment, the elastic element 6 is preferably disposed between the cutting mechanism 3 and the adjusting column 5. Specifically, the cutting mechanism 3 is provided with a mounting hole 32 and a mounting groove 31 suitable for accommodating the elastic element 6. The shape of the mounting hole 32 is adapted to the adjusting column 5. The mounting groove 31, the mounting hole 32, and the cutting channel are connected in sequence. The adjusting column 5 passes through the mounting groove 31 and the mounting hole 32 in sequence and extends into the cutting channel. The elastic element 6 is preferably a compression spring, which is sleeved on the outer side of the end of the adjusting column 5 away from the adjusting part 41. The length or width of the abutment part 51 is greater than the diameter of the compression spring.

[0052] Furthermore, the end of the adjusting column 5 away from the adjusting component 4 is a polygonal column; the mounting hole 32 is a polygonal columnar through hole, which, in conjunction with the polygonal columnar end of the adjusting column 5, restricts the adjusting column 5 from rotating around the sliding direction during the gear adjustment process, thus preventing the gear adjustment from becoming insensitive or malfunctioning.

[0053] Furthermore, a limiting protrusion 512 is provided on the side of the abutment portion 51 away from the adjustment portion 41, which is suitable for preventing the adjustment column 5 from being completely submerged in the cutting mechanism 3, specifically the mounting groove 31. Preferably, there are two limiting protrusions 512, which, together with the two ends of the abutment portion 51, form a cross-shaped distribution structure to jointly press against the elastic member 6, making the overall force more uniform, thereby driving a more stable functional structure.

[0054] It should be noted that in some embodiments without the elastic element 6, when the adjusting column 5 is slid into a deeper position of the cutting mechanism 3 by the adjusting element 4, the adjusting column 5 does not follow back when the adjusting element 4 is operated in the reverse direction. At this time, there is a gap between the adjusting column 5 and the adjusting element 4. However, this gap can be filled by inserting a pencil into the cutting channel to push the adjusting column 5 against the adjusting element 4, so that the abutting part 51 abuts against the adjusting part 41 again.

[0055] Furthermore, the adjustment section 41 is provided with several gear positions; the end of the adjustment column 5 near the adjustment section 41 has an abutment 51, the shape of the end of the abutment 51 is adapted to the shape of the gear position so that the abutment 51 can be engaged in the gear position.

[0056] The preferred gear position has a recess 411 in the middle and a protrusion 412 on each side. Several recesses 411 and several protrusions 412 are connected in sequence to form a gradually rising wave surface or zigzag surface. A guide surface 511 is provided on the abutment part 51 to guide the abutment part 51 into different gear positions.

[0057] In this embodiment, the preferred recess 411 is an arc-shaped depression, and the side protrusions 412 are arc-shaped convex protrusions. Several recesses 411 and several protrusions 412 are connected sequentially to form a gradually rising wave-like surface. Correspondingly, the guide surface 511 is an arc-shaped surface, making the high-adjustment process smoother. With the elastic element 6, the abutment part 51 can be better held in the recess 411, thereby better maintaining the lead adjustment position. The guide surface 511 can better overcome the potential energy of the elastic element 6 during the operation of the adjustment element 4. In some other embodiments with poorer performance, the position may not have a recess 411 and can be replaced by a plane. Correspondingly, the abutment part 51 is also provided with a plane to adapt to it.

[0058] The adjusting component 4 includes a cap 40 and an adjusting plate 42.

[0059] In this embodiment, the cap body 40 is connected to the housing 1 via a rocker arm 21. The cap body 40 is rotatably connected to the rocker arm 21, specifically in a rotatable connection where the cap body 40 can rotate around its central axis, which is parallel to the cutting channel. In other embodiments, the drive mechanism 2 consists of a power supply, a motor, and a transmission gear set, and the adjusting member 4 can be directly rotatably connected to the housing 1.

[0060] The adjusting plate 42 is fixed to the inner side of the cap body 40 near the cutting mechanism 3, and preferably is integrally formed with the cap body 40.

[0061] The adjusting plate 42 is annular, preferably circular; the adjusting plate 42 has two sets of the above-mentioned adjusting parts 41, located on the side of the adjusting plate 42 near the cutting mechanism 3, and the two adjusting parts 41 are centrally symmetrically arranged, so that all the positions fall on the projection of the cap body 40 on the same circle; rotating the cap body 40 can drive the abutment part 51 to simultaneously abut against different positions of the two adjusting parts 41, the purpose of which is to make the lead adjustment function more stable.

[0062] The cap body 40 is assembled with the housing 1 or the rocker arm 21 by means of a locking and sliding mechanism.

[0063] Specifically, in this embodiment, the cap body 40 extends toward the housing 1 with a plurality of mounting buckles 44; the end of the mounting buckle 44 has a hook edge 441; an arc-shaped elongated hole 213 is provided at the transmission end 210 of the rocker arm 21, the hook edge 441 passes through the elongated hole 213 and is fastened behind the elongated hole 213, and the mounting buckle 44 can slide in the elongated hole 213; a connecting hole 212 is provided in the middle of the transmission end 210 of the rocker arm 21, and the adjusting part 41 and the abutting part 51 abut through the connecting hole 212.

[0064] Example 2

[0065] As another embodiment, such as Figure 8-11 As shown, the adjusting component 4 is a hinged lever.

[0066] Specifically, the adjusting component 4 includes a lever body 400; the middle part of the lever body 400 is hinged to the housing 1 or the drive mechanism 2 via a pivot 43.

[0067] The adjustment part 41 is located at one end of the lever body 400 near the cutting mechanism 3. The side of the adjustment part 41 that contacts the abutment part 51 is a raised arc surface. Several positions are provided on this arc surface, and each position is also provided with an arc-shaped recess 411. Arc-shaped protrusions 412 are provided on both sides of the position. Several recesses 411 and several protrusions 412 are connected in sequence to form a gradually rising wave surface.

[0068] By turning the other end of the lever body 400, the abutment part 51 can overcome the elastic force of the elastic member 6 and then abut against different positions of the adjustment part 41, thereby ultimately achieving the purpose of adjusting the thickness of the pencil tip.

[0069] This utility model discloses an adjustable pencil tip sharpening device. By setting a sliding adjustment column in the cutting channel, and cooperating with the gradually rising adjustment part on the adjustment component, the adjustment component can be operated to make different positions of the adjustment part abut against the adjustment column, thereby changing the depth of the adjustment column entering the cutting channel, so as to adjust the thickness of the pencil tip being sharpened.

[0070] The above embodiments only illustrate a portion of the implementation methods of the present invention. Any modifications, substitutions, and improvements made by those skilled in the art without departing from the inventive concept of the present invention, without creative effort, are all within the protection scope of the present invention.

Claims

1. A pencil sharpener with adjustable pencil tip thickness, comprising a housing (1) with a pencil inlet hole (11); a cutting mechanism (3) connected to the housing (1) and having a cutting channel communicating with the pencil inlet hole (11); a driving mechanism (2) connected to the cutting mechanism (3) and adapted to drive the cutting mechanism (3) to cut a pencil; characterized in that: an adjusting column (5) is connected to the cutting mechanism (3) and is arranged to slide along the direction of entry and exit of the cutting channel; an adjusting member (4) is rotatably connected to the housing (1) or the driving mechanism (2), one end of the adjusting member (4) is provided with an adjusting portion (41); the adjusting portion (41) is in abutment with the adjusting column (5); the height of the adjusting portion (41) gradually increases towards the adjusting column (5), and rotating the adjusting member (4) can make different positions of the adjusting portion (41) abut against the adjusting column (5), thereby adjusting the depth position of the adjusting column (5) entering the cutting channel. Further comprising an elastic member (6); the elastic member (6) is connected to the cutting mechanism (3) and the adjusting column (5), or connected to the housing (1) and the adjusting column (5), and is adapted to make the adjusting column (5) have a tendency to top the adjusting portion (41). The cutting mechanism (3) is provided with a mounting hole (32) and a mounting groove (31) adapted to accommodate the mounting of the elastic member (6); The shape of the mounting hole (32) is adapted to the adjusting column (5); The mounting groove (31), the mounting hole (32) and the cutting channel are sequentially communicated; 2. A device for adjusting the lead hardness of a pencil according to claim 1, characterized in that, The adjusting column (5) sequentially passes through the mounting groove (31) and the mounting hole (32) and extends into the cutting channel. The end of the adjusting column (5) away from the adjusting member (4) is a polygonal column; 3. A device for adjusting the lead thickness of a pencil according to claim 2, characterized in that The mounting hole (32) is a polygonal columnar through hole. The adjusting portion (41) is provided with a plurality of gears; The end of the adjusting column (5) close to the adjusting portion (41) is provided with an abutting portion (51), and the shape of the end of the abutting portion (51) is adapted to the shape of the gears. The middle of the gear is provided with a gear recess (411), and the two sides of the gear are respectively provided with a gear convex (412), a plurality of the gear recesses (411) and a plurality of the gear convexes (412) are sequentially connected to form a gradually rising wave surface or a zigzag surface; 4. A device for adjusting the lead thickness of a pencil according to claim 3, characterized in that The abutting portion (51) is provided with a guide surface (511) adapted to guide the abutting portion (51) to be clamped into different gears. The side of the abutting portion (51) away from the adjusting portion (41) is provided with a limiting protrusion (52) adapted to limit the adjusting column (5) from completely sinking into the cutting mechanism (3).

5. A device for adjusting the lead thickness of a pencil according to any one of claims 1 to 4, characterized in that The adjusting member (4) comprises a cap body (40) and an adjusting plate (42); The cap body (40) is connected to the housing (1), and the adjusting plate (42) is located on the inner side of the end of the cap body (40) close to the cutting mechanism (3); 6. A device for adjusting the lead thickness of a pencil according to claim 5, characterized in that The adjusting plate (42) is annular and has two groups of the adjusting portion (41), and the two adjusting portions (41) are centrally symmetrically arranged. ​ 7. A device for adjusting the lead thickness of a pencil according to claim 5, wherein ​ 8. A device for adjusting the lead thickness of a pencil according to any one of claims 6, 7, characterized in that, ​ ​ ​ Rotating the cap (40) can make the abutting part (51) abut to different gears of the two adjusting parts (41) at the same time.

9. A device for adjusting the lead hardness of a pencil according to claim 8, characterized in that The cap (40) extends towards the shell (1) and has several installation buckles (44); The end of the installation buckle (44) has a hooking edge (441); The shell (1) or the driving mechanism (2) is provided with an arc-shaped long hole (213), the hooking edge (441) passes through the long hole (213) and is buckled behind the long hole (213), and the installation buckle (44) can slide in the long hole (213).

10. The adjustable lead sharpening device of claim 5, wherein, The adjusting part (4) comprises a lever main body (400); The middle part of the lever main body (400) is hinged to the shell (1) or the driving mechanism (2) through a rotating shaft (43); The adjusting part (41) is arranged at one end of the lever main body (400) close to the cutting mechanism (3), and rotating the other end of the lever main body (400) can make the abutting part (51) abut to different positions of the adjusting part (41).

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