Self-adaptive pencil feeding and sharpening device

Abstract

The utility model belongs to the technical field of stationery, and provides a self-adaptive pencil feeding and sharpening device which comprises a cutter part and a blade. The cutter part comprises a guide part, the guide part is used for guiding the to-be-sharpened part of the pencil to be in contact with the blade, the pencil can be sharpened by the blade when rotating relative to the guide part, the self-adaptive pencil feeding and sharpening device further comprises a self-adaptive clamping piece, and the self-adaptive clamping piece is rotationally connected with the cutter part; and the self-adaptive clamping piece can generate elastic deformation to clamp the pencil and enable the self-adaptive clamping piece and the pencil to synchronously rotate when the pencil rotates relative to the guide part.

Description

Technical Field

[0001] This patent belongs to the field of stationery technology, specifically relating to an adaptive pen-feeding and sharpening device. Background Technology

[0002] There are typically two types of pencil sharpeners: one is for sharpening ordinary pencils with a maximum outer diameter of 8 mm. This type of sharpener has a smaller opening and cannot insert pencils with an outer diameter greater than 8 mm. The other type of sharpener has a larger opening and is used for sharpening thicker pencils with a larger outer diameter. This type of sharpener may cause problems such as pencil tilting and instability when sharpening pencils with a diameter of less than 8 mm.

[0003] Therefore, when there is a need to sharpen both regular and thick pencils, different pencil sharpeners are often required.

[0004] To address this problem, a pencil sharpener with two openings on a single body has emerged in the stationery industry: one for regular pencils of common sizes and one for thicker pencils.

[0005] However, the aforementioned pencil sharpener with two openings is large and expensive due to its structure having two sets of blades, which severely limits the design and addition of other mechanisms, and it is still inconvenient because it requires determining which socket to use before use. Utility Model Content

[0006] The purpose of this patent is to provide an adaptive pencil feeding and sharpening device that is highly adaptable to the outer diameter of pencils.

[0007] To achieve the above objectives, the technical solution provided by this patent is an adaptive pencil sharpening device, including a cutting tool and a blade; the cutting tool includes a guide part, which guides the part of the pencil to be sharpened to contact the blade, and the pencil can be cut by the blade when it rotates relative to the guide part; the adaptive pencil sharpening device also includes an adaptive clamping member; the adaptive clamping member is rotatably connected to the cutting tool; the adaptive clamping member can undergo elastic deformation to clamp the pencil and rotate synchronously with the pencil when the pencil rotates relative to the guide part.

[0008] Furthermore, when the adaptive clamp holds the pencil, the force exerted on the pencil tends to make the pencil coaxial with the guide.

[0009] Furthermore, the adaptive clamp also includes a beveled section for guiding the pencil closer to the guide portion.

[0010] Furthermore, it also includes a housing and a cover; the housing and the cover can fit together, and the cutting tool is located inside the housing.

[0011] Furthermore, the cover includes an opening through which a pencil can pass without causing the adaptive clamp to reach its maximum elastic deformation.

[0012] Furthermore, the adaptive clamping component includes a connecting part and an adaptive clamping part.

[0013] Furthermore, the connecting part is connected to the cutting tool part; when clamping the pencil, the adaptive clamping part contacts the pencil.

[0014] Furthermore, the connecting part and the adaptive clamping part are integrally formed.

[0015] Furthermore, it also includes the outer shell and the cover.

[0016] Furthermore, the connecting part includes an upper edge and a sidewall.

[0017] Furthermore, the sidewall is located inside the cutting tool section.

[0018] Furthermore, the upper edge is sandwiched between the outer shell and the cover.

[0019] Furthermore, the adaptive clamping part consists of multiple jaws arranged in a ring around the axis of the guide part. One end of the jaw is connected to the connecting part, and the other end extends towards the guide part.

[0020] Furthermore, the adaptive clamping element is made of polymer material or alloy.

[0021] Furthermore, the adaptive clamp is suitable for clamping pencils with outer diameters of 5.0mm to 7.9mm, 7.9mm to 8.1mm, 8.1mm to 10.0mm, 10.0mm to 15.0mm, or 15.0mm to 20.0mm.

[0022] This invention provides an adaptive pen-feeding and sharpening device, which has the following advantages over the prior art:

[0023] By incorporating an adaptive clamping element, the pencil sharpening device can stably cut common-sized and thick pencils using only a single opening. Through improvements to the common structure of pencil sharpening devices related to the adaptive clamping element, the adaptive clamping element achieves better adaptability to the outer diameter of the pencil. During the insertion of the pencil into the cutting position by this adaptive pencil sharpening device, the device guides the pencil at multiple points, resulting in smooth insertion. When using this patented device for pencil sharpening, the cutting action is stable, and damage to the pencil is minimal.

[0024] The adaptive pencil sharpening device provided by this invention is almost identical in use to existing pencil sharpening devices, requiring no learning curve. The adaptive clamping component itself and the structure used for its mounting require minimal modification to commonly used pencil devices, still offering the flexibility to integrate or add other mechanisms. Attached Figure Description

[0025] The above content of this patent and the following detailed embodiments will be better understood when read in conjunction with the accompanying drawings. It should be noted that the drawings are merely examples of the claimed technical solution.

[0026] Figure 1 An exploded three-dimensional diagram of an adaptive pen-feeding and sharpening device;

[0027] Figure 2 An exploded view of the adaptive pen-feeding and sharpening device;

[0028] Figure 3 A cross-sectional view of the dust cover closed in the assembled state of the adaptive pen-feeding and sharpening device;

[0029] Figure 4 A three-dimensional schematic diagram of the adaptive pen-feeding and sharpening device in its assembled state;

[0030] Figure 5 A cross-sectional view of the self-adaptive pen-feeding and sharpening device with the dust cover open in its assembled state;

[0031] Figure 6 A three-dimensional schematic diagram of the cover of the adaptive pen-feeding and sharpening device in the dust cover open state;

[0032] Figure 7 A three-dimensional schematic diagram of the adaptive clamping component of the adaptive pen-feeding and sharpening device;

[0033] Figure 8 A front view schematic diagram of the adaptive clamping component of the adaptive pen-feeding and sharpening device;

[0034] Figure 9 A top view of the adaptive clamping component of the adaptive pen-feeding and sharpening device;

[0035] Figure 10 A three-dimensional schematic diagram of the cutting section of an adaptive pencil sharpening device;

[0036] Figure 11 A schematic diagram of the adaptive pen-feeding and sharpening device;

[0037] Figure 12 A schematic diagram of the adaptive pencil sharpening device when sharpening fine pencils;

[0038] Figure 13 A schematic diagram of the adaptive pencil sharpening device when sharpening thicker pencils;

[0039] Figure 14 This is a top view schematic diagram of the adaptive clamping component of another adaptive pen-feeding and sharpening device.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. First Pencil

[0042] 2. Second pencil

[0043] 100 Casing

[0044] 200 Cover

[0045] 210 Opening

[0046] 300, 300' adaptive clamping parts

[0047] 310 Connecting part

[0048] 311 Top edge

[0049] 312 Sidewall

[0050] 320 Adaptive Clamping Part

[0051] 321 slope section

[0052] 400 Tooling Section

[0053] 410 Guidance Department

[0054] 420 Inner Wall

[0055] 430 end face

[0056] 500 regulator

[0057] 600 Cam

[0058] 700 Adjustment Dial

[0059] 800 blades

[0060] 801 screws

[0061] 900 tail plug Detailed Implementation

[0062] The detailed features and advantages of this patent are described below in the specific embodiments. The content is sufficient to enable any person skilled in the art to understand the technical content of this patent and implement it accordingly. Based on the specification, claims and drawings disclosed in this specification, a person skilled in the art can easily understand the related objectives and advantages of this patent.

[0063] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0064] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not indicate the only possible implementation. The terms "upper," "lower," etc., indicating orientation or positional relationships are defined with reference to the coordinates of the accompanying drawings and are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this patent. The terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0065] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this patent belongs. The terminology used herein in the specification of this patent is for the purpose of describing particular embodiments only and is not intended to be limiting of this patent. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0066] The terminology and expressions used herein are for descriptive purposes only and this patent should not be limited to them. The use of these terms and expressions does not imply the exclusion of any illustrative and descriptive equivalent features (or parts thereof), and it should be recognized that various possible modifications should also be included within the scope of the claims. Other modifications, variations, and substitutions may also exist. Accordingly, the claims should be considered to cover all such equivalents.

[0067] Similarly, it should be noted that although this patent has been described with reference to the specific embodiments described above, those skilled in the art should recognize that the above embodiments are only used to illustrate this patent, and various equivalent changes or substitutions can be made without departing from the spirit of this patent. Therefore, any changes or modifications to the above embodiments within the essential spirit of this patent will fall within the scope of the claims of this patent.

[0068] Example 1

[0069] refer to Figures 1-13 This patent provides an embodiment 1 of an adaptive pen-feeding and sharpening device.

[0070] like Figures 1-2The adaptive pen-feeding and sharpening device of this embodiment includes a housing 100, a cover 200, an adaptive clamping member 300, a cutting tool 400, an adjuster 500, a cam 600, an adjusting plate 700, a blade 800, and a tail plug 900.

[0071] The assembly steps in this embodiment are as follows:

[0072] 1. Secure the blade 800 to the cutting tool section 400 using screw 801.

[0073] 2. Place the tool part 400 and the adaptive clamping member 300 inside the housing 100 in sequence, and press the tool part 400 and the adaptive clamping member 300 into the housing 100 together with the cover 200 to fix them.

[0074] 3. Insert the adjuster 500 into the cutter section 400, press the adjusting plate 700 into the tail plug 900, insert the cam 600 to insert the assembled tail plug 900 and its parts into the housing 100 and tighten it.

[0075] The cross-sectional view of the assembled assembly in this embodiment is shown below. Figure 3 As shown, the outer shell 100 and the cover 200 cover each other.

[0076] 3D images such as Figure 4 As shown.

[0077] like Figures 5-6 As shown, the cover 200 includes an opening 210 for a pencil to pass through. Preferably, the opening 210 is sized to allow a pencil to pass through without causing the adaptive clamp 300 to reach its maximum elastic deformation. Specifically, in this embodiment, the opening 210 is a circular hole that allows a pencil with an outer diameter of less than 15 mm to pass through. The cover 200 also includes a dust cover 220 for closing the opening 210 to prevent dust; the opening 220 is opened to expose the pencil in use.

[0078] The cutting tool section 400 includes a tapered guide section 410, which guides the part of the pencil to be sharpened to contact the blade 800. The pencil can be cut by the blade 800 when it rotates relative to the guide section 410.

[0079] The adaptive clamping member 300 includes an integrally formed connecting part 310 and an adaptive clamping part 320, and the adaptive clamping part 320 contacts the pencil when clamping the pencil.

[0080] The adaptive clamping member 300 is rotatably connected to the cutting tool section 400. The adaptive clamping member 300 can elastically deform to clamp the pencil, and when the pencil rotates relative to the guide section 410, the adaptive clamping member 300 rotates synchronously with the pencil. (Reference) Figures 7-10The connecting portion 310 includes an upper edge 311 and a side wall 312. Above the guide portion 410 in the cutting tool portion 400, there is also an inner wall 420 and an end face 430. After the cutting tool portion 400 and the adaptive clamping member 300 are pressed together into the housing 100 and fixed using the cover 200 in the above-mentioned installation step 2, the side wall 312 is located inside the inner wall 420 and can slide relative to it. The upper edge 311 is clamped between the housing 100 and the cover 200 to provide axial limitation. The gap between the upper edge 311 and the housing 100 and the cover 200 should ensure that the axial position of the adaptive clamping member 300 relative to the housing 100 and the cover 200 is as stable as possible, without hindering the rotation of the adaptive clamping member 300 relative to the housing 100 and the cover 200. Specifically, the criteria for judging whether the rotation of the adaptive clamping member 300 relative to the housing 100 and the cover 200 is hindered include the emission of an abnormal sound such as a "clattering" noise.

[0081] The gripper also includes a beveled section 321 for guiding the pencil toward the guide portion 410. The opening 210, the adaptive clamping member 300 and the guide portion 410 are coaxially mounted. During the insertion of the pencil, the pencil is guided as it passes through the opening 210, the adaptive clamping member 300 and the guide portion 410 in sequence, and is located at the center of this embodiment.

[0082] The adaptive clamping part 320 consists of multiple jaws of the same shape, arranged in a ring around the axis of the guide part 410. One end of each jaw is connected to the connecting part 310, and the other end extends toward the guide part 410. It is understood that since the multiple jaws are of the same shape and material, the elastic deformation reaction forces generated by the pressure of the pencil tend to be the same. Therefore, when the adaptive clamping part 300 clamps the pencil, the force exerted on the pencil tends to position the pencil at the axis of the space enclosed by the multiple jaws, coaxial with the guide part 410.

[0083] In this embodiment, the adaptive clamping member 300 is made entirely of plastic. It is easy to understand that in other embodiments, the adaptive clamping part 320 may also be made of other acceptable polymer materials or alloys.

[0084] For example, common plastics include polyethylene plastics, polypropylene plastics, polyvinyl chloride plastics, polypropylene plastics, polycarbonate plastics, ABS plastics (acrylonitrile-butadiene-styrene copolymer), polystyrene, polyoxymethylene, etc.

[0085] For example, other polymeric materials besides plastics include rubber, silicone, polylactic acid, photosensitive resin, etc.

[0086] For example, the alloy includes spring steels such as 65Mn, 60Si2Mn, 17-7PH (precipitation hardening stainless steel), as well as titanium alloys, shape memory alloys, copper-based elastic alloys, and aluminum alloys.

[0087] After the first pencil 1 is inserted into this embodiment, the end of the first pencil 1 will be pressed against the cutting edge of the blade 800, and it can be used to sharpen the pencil. Figure 11 As shown, when the first pencil 1 is inserted and pressed down, and rotated in the direction of the arrow (red), or rotated in the direction of the arrow (blue) in this embodiment, or when both operations are performed simultaneously, the cutting edge of the blade 800 will sharpen the first pencil 1.

[0088] Guided by the conical guide portion 410, the pencil is sharpened within the space enclosed by the guide portion 410 and the blade 800. Therefore, before installing the blade 800, it needs to be cut into a shape that conforms to the conical shape of the guide portion 410. In this embodiment, the blade 800 is fixed to the cutting tool portion 400 by screws 801.

[0089] In addition, to adjust the sharpness of the pencil, this embodiment also includes an adjuster 500, which is connected to the cutter section 400. The closer the adjuster 500 is to the guide section 410, the blunter the pencil will be after it is fully sharpened; the further the adjuster 500 is from the guide section 410, the sharper the pencil will be after it is fully sharpened. The end of the adjuster 500 away from the guide section 410 is connected to a cam 600. The cam 600 is connected to an adjusting disc 700 and mounted on a tail plug 900. The adjusting disc 700 is exposed. By rotating the adjusting disc 700, the cam 600 can rotate and move the adjuster 500 closer to or further away from the guide section 410. The tail plug 900 is also used to collect the pencil shavings.

[0090] Compare Figure 12 and Figure 13 The diagram illustrates the state of this embodiment when sharpening pencils of different outer diameters.

[0091] Figure 12 This refers to the case when sharpening the first pencil (1) to a finer point. Figure 13 This illustrates the situation when sharpening a coarser second pencil (2). When pencils of different outer diameters are inserted, the adaptive clamping element 300 exhibits varying degrees of elastic deformation, as shown in the red box, effectively clamping the pencil. Even when changing pencils or using the adaptive feed pencil sharpener during use, the pencil remains stuck in the adaptive clamping element 300, making it difficult for the pencil to move from the center of the adaptive feed pencil sharpener.

[0092] It is easy to understand that the elastic deformation generated by the adaptive clamping member 300 when clamping the second pencil 2 is greater than the elastic deformation generated when clamping the first pencil 1.

[0093] In other embodiments, the pencil can be sharpened more stably by further increasing the number of fulcrums supporting the pencil.

[0094] The adaptive clamping member 300 of this embodiment is suitable for clamping pencils with an outer diameter of 5mm to 7.9mm, 7.9mm to 8.1mm, 8.1mm to 10mm, or 10mm to 15mm.

[0095] Example 2

[0096] An adaptive pen-feeding and sharpening device is basically the same as that in Embodiment 1, except that, as Figure 14 As shown, in Embodiment 2, the shapes of the multiple grippers constituting the adaptive gripping part 320 in the adaptive gripper 300' are not all the same. Instead, they consist of two types of grippers that are alternately and evenly distributed circumferentially. This arrangement of grippers allows the adaptive gripper 300' to still hold the pencil at its axis, and makes it easier to design grippers of various shapes to accommodate pencils with a wider range of outer diameters. The adaptive gripper 300' in Embodiment 2 is suitable for gripping pencils with diameters of 5mm–7.9mm, 7.9mm–8.1mm, 8.1mm–10mm, 10mm–15mm, or 15mm–20mm. Correspondingly, the opening 210 in Embodiment 2 is a circular hole with a diameter of 20mm.

[0097] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this patent will not describe the various possible combinations separately.

[0098] Furthermore, various implementations of this patent can be combined in any way, and as long as they do not violate the spirit of this patent, they should also be regarded as the content disclosed in this patent.

Claims

1. An adaptive pen-feeding and sharpening device, comprising a cutting tool section (400) and a blade (800); The cutting tool (400) includes a guide (410) for guiding the pencil part to be cut to contact the blade (800). When the pencil rotates relative to the guide (410), it can be cut by the blade (800). Its features are, The adaptive pen-feeding and sharpening device also includes an adaptive clamping element (300); The adaptive clamping member (300) is rotatably connected to the cutting tool section (400); The adaptive clamp (300) is capable of elastic deformation to clamp the pencil and rotate synchronously with the pencil when the pencil rotates relative to the guide (410).

2. The adaptive pen-feeding and sharpening device according to claim 1, characterized in that, When the adaptive clamp (300) clamps the pencil, the force exerted on the pencil tends to make the pencil coaxial with the guide (410).

3. The adaptive pen-feeding and sharpening device according to claim 1, characterized in that, The adaptive clamp (300) also includes a beveled section (321) for guiding the pencil toward the guide (410).

4. The adaptive pen-feeding and sharpening device according to claim 1, characterized in that, It also includes an outer shell (100) and a cover (200); The outer shell (100) and the cover (200) can cover each other, and the cutting tool (400) is disposed inside the outer shell (100); the cover (200) includes an opening (210) through which a pencil can pass without causing the adaptive clamp (300) to reach its maximum elastic deformation.

5. The adaptive pen-feeding and sharpening device according to claim 1, characterized in that, The adaptive clamping member (300) includes a connecting part (310) and an adaptive clamping part (320); The connecting part (310) is connected to the cutting tool part (400); When holding a pencil, the adaptive clamping part (320) contacts the pencil.

6. The adaptive pen-feeding and sharpening device according to claim 5, characterized in that, The connecting part (310) and the adaptive clamping part (320) are integrally formed.

7. The adaptive pen-feeding and sharpening device according to claim 5, characterized in that, It also includes an outer shell (100) and a cover (200); The outer shell (100) and the cover (200) can cover each other, and the cutting tool (400) is disposed inside the outer shell (100); The connecting part (310) includes an upper edge (311) and a side wall (312); The sidewall (312) is located inside the cutting tool section (400); The upper edge (311) is sandwiched between the outer shell (100) and the cover (200).

8. The adaptive pen-feeding and sharpening device according to claim 5, characterized in that, The adaptive clamping part (320) is composed of multiple jaws, which are arranged in a ring around the axis of the guide part (410). One end of the jaw is connected to the connecting part (310), and the other end extends toward the guide part (410).

9. The adaptive pen-feeding and sharpening device according to any one of claims 1 to 8, characterized in that, The adaptive clamping component (300) is made of polymer material or alloy.

10. The adaptive pen-feeding and sharpening device according to any one of claims 1 to 8, characterized in that, The adaptive clamping element (300) is suitable for clamping pencils with an outer diameter of 5.0mm to 7.9mm, 7.9mm to 8.1mm, 8.1mm to 10.0mm, 10.0mm to 15.0mm, or 15.0mm to 20.0mm.

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