CN217863492U - Ash removal knife rest and knife tackle and pencil sharpener with same - Google Patents

Abstract

The utility model discloses an ash removal knife rest, comprising a frame body, support body axial upper and lower both ends are equipped with respectively and hold pen compartment and cylindric connecting portion, connecting portion are used for linking with the connection key, the grey structure is dialled to having on the connecting portion, it is used for stirring the lead pen ash and/or the saw-dust of connecting portion below to dial the grey structure to the outside. The utility model also provides an deashing knife tackle of having above-mentioned deashing knife rest. The utility model also provides a penknife of having above-mentioned deashing knife rest. The utility model provides an ash removal knife rest, it is set up in the connecting portion position of knife rest and dials grey structure, dials grey structure and is used for stirring pencil ash and/or saw-dust of connecting portion below to the outside, avoids the pencil ash to pile up entering into the installation intracavity.

Description

Ash removal knife rest and knife tackle and pencil sharpener with same

Technical Field

The utility model relates to a sharpener knife rest technical field, more specifically say, relate to an deashing knife rest and have knife tackle and penknife of this knife rest.

Background

The existing automatic pencil sharpener is provided with a shell which is provided with a scrap cavity and a mounting cavity which are separated from each other, wherein a motor and a reduction gear set are mounted in the mounting cavity, an output shaft of the motor is meshed with an input gear of the reduction gear set, an output gear of the reduction gear set is coaxially provided with a coupling key, and the coupling key extends into the scrap cavity. The knife rest is arranged on an upper cover in the pencil sharpener, when the upper cover is connected with the shell cover, the scrap cavity is sealed, the lower end of the knife rest is connected with the connecting key joint, and the knife rest is driven by the motor to rotate around an axis under the driving action of the reduction gear set and is used for cutting a pencil. In the actual use process of the structure, pencil ash generated by pencil sharpening can be greatly accumulated below the tool rest, after pencil sharpening is carried out for many times, the pencil ash can flow in from a hole gap between the connecting key and the shell, and along with the increase of the number of times of pencil sharpening, the pencil ash gradually fills up a meshing gap in the whole speed reduction gear set, so that the power consumption of the whole machine is increased. And the lead ash has good electrical conductivity, and the entry of the lead ash can also cause short-circuiting of the electronic components in the mounting cavity.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the utility model provides an ash removal knife rest, it sets up in the connecting portion position of knife rest and dials the ash structure, dials the ash structure and is used for stirring the pencil ash and/or the saw-dust of connecting portion below to the outside, avoids the pencil ash to pile up and enters into the installation intracavity.

The utility model also provides an deashing knife tackle of having above-mentioned deashing knife rest.

The utility model also provides a penknife of having above-mentioned deashing knife rest.

The utility model adopts the technical proposal that: the ash removal knife rest comprises a frame body, wherein the upper end and the lower end of the frame body in the axial direction are respectively provided with a pen containing bin and a cylindrical connecting part, the connecting part is used for being connected with a connecting key, an ash poking structure is arranged on the connecting part, and the ash poking structure is used for poking lead ash and/or wood dust below the connecting part outwards.

After the structure is adopted, the tool rest rotates relative to the pencil under the driving of the connecting key to carry out cutting action, and the outer throw distance of pencil dust generated by cutting is smaller and is gradually accumulated at the position of the connecting part. The ash poking structure rotates along with the cutter rest, and the pencil ash and/or the wood dust below the connecting part are/is poked to the radial outer side of the connecting part in the rotating process, so that the pencil ash is prevented from piling up in the mounting cavity under the connecting part, and the internal structure of the speed reduction processing group is effectively protected.

According to the utility model discloses an embodiment, the ash poking structure includes one or more chip removal portions, and the chip removal portion is formed by the downward extension of the lower end of the connecting portion; the pencil ash below the end part of the connecting part is prevented from being piled up due to the arrangement of the chip removal part.

According to an embodiment of the present invention, the radial inner diameter portion of the chip discharge portion in the rotation direction protrudes forward in the rotation direction from the radial outer diameter portion of the chip discharge portion in the bottom surface; the arrangement facilitates shifting of the pencil ash below the radial inner diameter part of the chip removal part to the position of the outer diameter part.

According to the utility model discloses an embodiment, dial grey structure including two or three chip removal portion, from the bottom surface, two or three the chip removal portion with connecting portion center is central symmetry and distributes.

According to the utility model discloses an embodiment, dial grey structure and include the portion of stirring of one or more, the portion of stirring by the outside arch of periphery of connecting portion forms, just the lower extreme of portion of stirring stretches out the terminal surface of connecting portion, the portion of stirring is used for stirring the pencil ash and/or the saw-dust that the chip removal portion was dialled out to the outside.

According to the utility model discloses an embodiment, dial grey structure including two or three stirring portion, from the bottom surface, two or three the stirring portion with connecting portion center is central symmetric distribution.

The ash removal knife tackle comprises any one of the ash removal knife rests and a straight blade or a hob which is installed on the knife rest frame body.

A pencil sharpener comprises a shell, a motor, a reduction gear set, an upper cover, any one of the ash removal tool rests and a straight blade or a hob cutter installed on a tool rest frame body, wherein an output gear of the reduction gear set is coaxially provided with a connecting key, and a connecting part on the ash removal tool rest frame body is detachably connected with the connecting key.

After adopting above-mentioned structure, can avoid the pencil ash to enter into the installation intracavity of casing, and then improve the life of pencil sharpener.

According to the utility model discloses an embodiment, be equipped with one-level step face and second grade step face in the bits intracavity of casing, in the vertical direction one-level step face is higher than the second grade step face, by one-level step face undercut is formed with the mounting groove, the connection key stretches out the casing is located in the mounting groove, the undercut is formed with the chip groove on the one-level step face, the chip groove with the mounting groove with the upper portion space switch-on of second grade step face.

According to the utility model discloses an embodiment, the penknife still includes the gear box, reduction gear group installs the inside of gear box, the gear box is installed in the installation cavity of casing, and with casing detachably connects.

Drawings

FIG. 1 is a schematic structural view of an ash removal tool holder according to an embodiment of the present invention;

FIG. 2 is a perspective view of an ash removal tool holder according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic structural view of a housing of the pencil sharpener according to the embodiment of the present invention;

FIG. 5 is a partial structural view of a pencil sharpener according to an embodiment of the present invention;

FIG. 6 is a partial exploded view of the pencil sharpener of the present invention;

FIG. 7 is a front view of a pencil sharpener according to an embodiment of the present invention;

fig. 8 is a cross-sectional view taken along line B-B of fig. 7.

The reference numbers in the figures illustrate:

1. a frame body; 2. a housing; 3. a coupling key; 4. a gear case; 5. a motor; 6. a power supply unit; 7. a reduction gear set; 8. an upper cover; 9. a microswitch;

11. rong Bicang; 12. a connecting portion;

12a, a chip removal part; 12b, a toggle part;

21. a first-level step surface; 22. a secondary step surface; 23. mounting grooves; 24. a chip groove.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1, 2 and 3, the present embodiment provides an ash removal tool holder, which includes a holder body 1, wherein an upper end and a lower end of the holder body 1 in an axial direction are respectively provided with a pen accommodating chamber 11 and a cylindrical connecting portion 12, the connecting portion 12 is used for being connected with a connecting key 3, the connecting portion 12 is provided with an ash stirring structure, and the ash stirring structure is used for stirring the lead ash and/or wood dust below the connecting portion 12 to the outside.

Further, in the present embodiment, the cylindrical connecting portion 12 specifically includes: the connecting part 12 is of a cylindrical structure, and the connecting part 12 is provided with a spiral spline structure matched with the connecting key 3, so that the connecting part 12 and the connecting key 3 can conveniently transmit torque after being connected.

Further, in this embodiment, the knife holder frame 1 is a straight blade type frame 1, the upper end of the knife holder frame is a pen accommodating chamber 11, the pen accommodating chamber 11 has a conical inner chamber, and a cutting gap is formed in a side wall of the inner chamber, the blade edge part of the blade abuts against the cutting gap, and when the pencil and the blade rotate relatively, wood chips and pencil ashes from the cutting edge part of the blade are discharged from the cutting gap.

Further, in this embodiment, the holder body 1 is vertically arranged, and the pencil is inserted into the pencil holding bin 11 from the upper end of the holder. The connecting portion 12 at the bottom end of the tool holder is used for coupling with the coupling key 3. The connecting key 3 transmits torque to the connecting part 12, so as to drive the tool rest to integrally rotate.

Specifically, the ash poking structure comprises one or more chip discharging parts 12a, and the chip discharging parts 12a are formed by downward extending of the lower end of the connecting part 12.

Further, as shown in fig. 3, the chip discharging portion 12a has an edge surface formed by spirally extending the lower end surface of the connecting portion 12 downward, and when the tool holder is used, the chip discharging portion 12a is suspended in the chip cavity of the housing 2 and does not abut against the chip cavity, so that friction between the tool holder and the bottom surface of the chip cavity is avoided when the tool holder rotates.

Specifically, the radial inner diameter portion of the chip ejection portion 12a in the rotational direction protrudes forward in the rotational direction from the radial outer diameter portion of the chip ejection portion 12a in the bottom surface.

Further, as shown in fig. 3, the side of the blade face close to the center of the connecting portion 12 is a radial inner diameter portion of the chip discharge portion 12a, and the side of the blade face away from the center of the connecting portion 12 is a radial outer diameter portion of the chip discharge portion 12 a. The above arrangement, i.e., the blade surface has a guide surface inclined inward and outward in the rotational direction for guiding the pencil lead dust at the radially inner portion of the lead discharging portion 12a toward the radially outer portion.

Specifically, dial grey structure including two chip removal portion 12a, from the bottom surface, two chip removal portion 12a with connecting portion 12 center is central symmetry and distributes.

It is specific, dial grey structure and include one or more stirring portion 12b, stirring portion 12b by the outside protruding formation in periphery of connecting portion 12, just the lower extreme of stirring portion 12b stretches out the terminal surface of connecting portion 12, stirring portion 12b is used for stirring to the outside with the pencil ash and/or the saw-dust that chip removal portion 12a was dialled out.

Further, the poking part 12b and the chip discharging part 12a are arranged in a staggered manner when viewed from the bottom, that is, the poking part 12b and the chip discharging part 12a are not coincident with the connecting line of the center of the connecting part 12.

Specifically, the ash poking structure comprises two poking parts 12b, and the two poking parts 12b are distributed in a central symmetry manner with the center of the connecting part 12 when viewed from the bottom surface.

Further, in another embodiment, a dust removing tool set is provided, which comprises the dust removing tool holder in the embodiment and a straight blade mounted on the tool holder body 1.

In another embodiment, the ash removal holder body 1 is provided with a hob.

In another embodiment, as shown in fig. 4-8, a pencil sharpener is provided, which comprises a housing 2, a motor 5, a reduction gear set 7, an upper cover 8, an ash removal tool holder as described in any one of the above, and a straight blade mounted on a tool holder body 1, wherein an output gear of the reduction gear set 7 is coaxially provided with a coupling key 3, and a connecting portion 12 on the ash removal tool holder body 1 is detachably connected with the coupling key 3.

Further, in this embodiment, the housing 2 has a chip chamber and a mounting chamber disposed at an interval, and the mounting chamber is located below the housing 2. The opening of the scrap cavity faces upwards, and when the upper cover 8 is connected with the shell 2, the upper cover 8 covers and seals the scrap cavity. The ash removal tool holder body 1 is rotatably mounted on the housing 2, and when the upper cover 8 is closed with the housing 2, the tool holder is located in the chip chamber and coupled with the coupling key 3. The motor 5 and the reduction gear set 7 are both arranged in the installation cavity. In this embodiment, the reduction gear set 7 has a fourth-stage gear, the output shaft of the motor 5 is provided with a gear engaged with the first-stage gear, the fourth-stage gear is coaxially provided with the coupling key 3, and the coupling key 3 extends into the chip cavity.

Specifically, the bottom surface in the bits chamber of casing 2 is equipped with one-level step face 21 and second grade step face 22, and in the vertical direction one-level step face 21 is higher than second grade step face 22, by one-level step face 21 undercut is formed with mounting groove 23, and the biggest external diameter of connecting portion 12 is less than the internal diameter of mounting groove 23, avoids connecting portion 12 to be rotatory for mounting groove 23, and stirring portion 12b and mounting groove 23 lateral wall produce the interference. The connecting key 3 extends out of the housing 2 and is located in the mounting groove 23, a chip groove 24 is formed on the first-stage step surface 21 in a downward concave manner, and the chip groove 24 connects the mounting groove 23 with the upper space of the second-stage step surface 22.

Further, the groove bottom of the chip groove 24 extends downwards to the upper space of the secondary step surface 22 from the combined surface of the chip groove 24 and the mounting groove 23. When the stirring part 12b stirs the pencil ash, the pencil ash in the mounting groove 23 is discharged above the secondary step surface 22 by the guidance of the chip discharge groove 24.

Specifically, the pencil sharpener further comprises a gear box 4, the reduction gear set 7 is installed inside the gear box 4, and the gear box 4 is installed in the installation cavity of the shell 2 and detachably connected with the shell 2.

Further, a power supply unit 6, a circuit board, a charging board and other basic circuit elements are further disposed in the mounting cavity, which is the prior art and is not described in detail.

Further, as shown in fig. 8, the fourth stage gear of the reduction gear set 7 is an integral component with the coupling key 3, and the integral component is floatingly mounted in the gear case 4. That is, the bottom of the fourth stage gear extends out of the gear box 4, a spring is arranged between the fourth stage gear and the bottom of the mounting cavity, the fourth stage gear can move axially along the fourth stage gear relative to the gear box 4, and the fourth stage gear can be kept meshed with the third stage gear in the moving process, so that the transmission effect of the reduction gear set 7 is ensured. A microswitch 9 is arranged in the mounting cavity, and a trigger structure of the microswitch 9 is propped against the fourth-stage gear.

In another embodiment, the principle of operation of the pencil sharpener is as follows:

the pencil is inserted into the upper cover 8 and enters the pencil containing bin 11 of the frame body 1 to drive the ash removing tool rest to move downwards integrally, the connecting part 12 drives the connecting key 3 to move downwards, the fourth-stage gear moves downwards synchronously, and the spring is compressed to trigger the micro switch 9. The circuit board controls the motor 5 to start working, the connecting key 3 is driven to rotate through the transmission of the reduction gear set 7, the connecting part 12 is connected with the connecting key 3 to drive torque, and therefore the connecting key 3 drives the tool rest to rotate relative to the upper cover 8 and the pencil, and the pencil is cut in the rotating process. The pencil ash and the sawdust which are continuously accumulated in the mounting groove 23 flow into the upper space of the secondary step surface 22 from the chip discharge groove 24 to be stored through the stirring of the chip discharge part 12a and the stirring part 12b, so that the pencil ash is prevented from being accumulated in the mounting groove 23.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

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

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. The utility model provides an ash removal knife rest, includes support body (1), support body (1) axial upper and lower both ends are equipped with respectively and hold pen compartment (11) and cylindric connecting portion (12), connecting portion (12) are used for linking with connection key (3), its characterized in that: the connecting part (12) is provided with a dust poking structure, and the dust poking structure is used for poking the pencil dust and/or wood dust below the connecting part (12) to the outside.

2. The ash removal tool holder of claim 1, wherein: the ash poking structure comprises one or more chip removal parts (12 a), wherein the chip removal parts (12 a) are formed by downwards extending the lower end of the connecting part (12).

3. The ash removal tool holder according to claim 2, wherein: the radial inner diameter part of the chip discharging part (12 a) along the rotating direction protrudes to the front of the rotating direction from the radial outer diameter part of the chip discharging part (12 a) seen from the bottom surface.

4. The ash removal tool holder of claim 3, wherein: dial grey structure including two or three chip removal portion (12 a), from the bottom surface, two or three chip removal portion (12 a) with connecting portion (12) center is central symmetry and distributes.

5. The ash removal tool holder according to claim 2, wherein: dial grey structure and include one or more stirring portion (12 b), stirring portion (12 b) by the outside protruding formation in periphery of connecting portion (12), just the lower extreme of stirring portion (12 b) stretches out the terminal surface of connecting portion (12), stirring portion (12 b) are used for stirring the pencil ash and/or the saw-dust that chip removal portion (12 a) were dialled to the outside.

6. The ash removal tool holder according to claim 5, wherein: the ash poking structure comprises two or three poking parts (12 b), and the two or three poking parts (12 b) are in central symmetry distribution with the center of the connecting part (12) when seen from the bottom surface.

7. The utility model provides an ash removal knife tackle which characterized in that: comprising the ash removal tool holder according to any one of claims 1 to 6 and a straight blade or a hob cutter mounted on the tool holder body (1).

8. A pencil sharpener is characterized in that: the ash removal tool rest comprises a shell (2), a motor (5), a reduction gear set (7), an upper cover (8), the ash removal tool rest according to any one of claims 1 to 6 and a straight blade or a hob installed on a tool rest frame body (1), wherein an output gear of the reduction gear set (7) is coaxially provided with a coupling key (3), and a connecting part (12) on the ash removal tool rest frame body (1) is detachably connected with the coupling key (3).

9. A pencil sharpener as claimed in claim 8, wherein: the bits intracavity of casing (2) is equipped with one-level step face (21) and second grade step face (22), on the vertical direction one-level step face (21) are higher than second grade step face (22), by one-level step face (21) undercut is formed with mounting groove (23), coupling key (3) stretch out casing (2) are located in mounting groove (23), the undercut is formed with chip groove (24) on one-level step face (21), chip groove (24) with mounting groove (23) with the upper portion space switch-on of second grade step face (22).

10. A pencil sharpener according to claim 9, wherein: the gearbox is characterized by further comprising a gearbox (4), wherein the reduction gear set (7) is installed inside the gearbox (4), and the gearbox (4) is installed in the installation cavity of the shell (2) and is detachably connected with the shell (2).

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