CN111114175B - Pen type dust-free automatic eraser - Google Patents

Abstract

The invention discloses a pen-type dust-free automatic eraser, which comprises a pen shell, a central rotating shaft, a micro motor, an eraser head, a shaft sleeve and a shaft sleeve toggle button, wherein the central rotating shaft is arranged on the pen shell; the micro motor and the central rotating shaft are arranged in the pen shell, the central rotating shaft is connected with an output shaft of the micro motor, the rubber head is fixedly arranged at the bottom end of the central rotating shaft, the central rotating shaft is provided with one section of flexible deformable section, the shaft sleeve is sleeved on the central rotating shaft, and the shaft sleeve can be driven to slide up and down along the central rotating shaft by poking the shaft sleeve toggle button. The eraser has a wiping range switching function, can erase specific points in a small range, can be switched into a large-range erasing mode, and can be conveniently adjusted in a wiping range by a user, so that the actual use requirements of the user are met.

Description

Pen type dust-free automatic eraser

Technical Field

The invention belongs to the technical field of stationery devices, and particularly relates to a pen-type dust-free automatic eraser.

Background

The eraser can erase the traces of the pencils, and is a stationery article commonly used in office work and study. When writing and drawing are wrong, the eraser can be used for erasing wrong handwriting. The existing eraser is manually operated, and is pinched between fingers to rub the handwriting back and forth so as to achieve the purpose of erasing the handwriting. This eraser has the following disadvantages: 1. the paper is easy to be broken; 2. the erasing speed is slow, and manual back-and-forth erasing is needed, so that time and labor are wasted; 3. the erasing range is large, the peripheral part which does not need to be erased is also erased, and the erasing effect is poor.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a pen-type dust-free automatic eraser which adopts a motor driving mode, is convenient to use and saves time and labor; meanwhile, the eraser has a wiping range switching function, can erase specific points in a small range and can be switched into a large-range erasing mode, and a user can conveniently adjust the wiping range, so that the actual use requirement of the user is met.

The invention is realized by the following technical scheme:

a pen-type dustless automatic eraser comprises a pen shell, a central rotating shaft, a micro motor, an eraser head, a shaft sleeve and a shaft sleeve toggle button;

the micro motor and the central rotating shaft are arranged in the pen shell, the top end of the central rotating shaft is connected with an output shaft of the micro motor, the eraser head is fixedly arranged at the bottom end of the central rotating shaft, and the eraser head is elliptic cone;

the lower part of the central rotating shaft is provided with a flexible deformable section, the shaft sleeve is sleeved on the central rotating shaft, the shaft sleeve is connected with a shaft sleeve toggle button, the shaft sleeve can be driven to slide up and down on the central rotating shaft along the central rotating shaft by toggling the shaft sleeve toggle button, the length of the shaft sleeve is greater than that of the flexible deformable section, when the flexible shaft sleeve is used, the shaft sleeve has two working positions, one is that the shaft sleeve completely sleeves the flexible deformable section, and the flexible deformable section is always kept in a vertical state under the restraint of the shaft sleeve and cannot be bent and deformed; and the other one is that the flexible deformable section is exposed out of the shaft sleeve and loses the constraint of the shaft sleeve.

In the technical scheme, the center of the eraser head is provided with an insertion hole, and the bottom end of the central rotating shaft is inserted into the insertion hole.

In the technical scheme, a hard rubber core is further embedded in the axis position inside the rubber head, the hard rubber core is cylindrical and has the diameter of 1-2mm, the material of the hard rubber core is selected from rubber materials with high hardness and low flexibility, the bottom end of the hard rubber core extends out of the bottom surface of the rubber head, and specific points can be accurately erased through the hard rubber core.

In the technical scheme, the pen shell is provided with the section of channel, and the shaft sleeve toggle button is installed in the channel so as to be capable of being toggled up and down.

In the above technical scheme, a pen cap is arranged at the top of the pen shell.

In the above technical scheme, the pen shell is provided with the fastener at the upper side.

In the technical scheme, the bottom of the pen shell is also matched with the dust collection cover, the dust collection cover is provided with the opening, and the dust collection cover is made of silica gel or rubber.

In the technical scheme, the bottom of the pen shell is also matched with a shaping knife cover, a top port of the shaping knife cover can be sleeved at the bottom of the pen shell to cover the eraser head, and an arc-shaped shaping knife is embedded in the shaping knife cover.

In the technical scheme, the pen type dust-free automatic eraser is provided with a driving mechanism for driving an eraser head to move up and down, and the driving mechanism has the structure that: the top end of the central rotating shaft is connected with the output shaft of the micro motor through a vertical sliding structure, so that the central rotating shaft has the freedom degree of axial movement along the output shaft of the micro motor, but the central rotating shaft and the output shaft do not have the freedom degree of relative rotation; be provided with the round boss in central pivot, and be provided with one on the shell of a pen be used for with boss complex button, the button is installed in the slide of shell of a pen, the slide sets up along the vertical direction of shell of a pen, so that the button can reciprocate along the slide, the end of button is groove structure, its terminal recess can with the epaxial boss cooperation of central pivot after the button is pressed, then move the button along the slide downwards, the button can drive whole central pivot downstream, and then central pivot drives the rubber head downstream, realize and the shaping sword contact in the shaping blade casing.

In the technical scheme, the central rotating shaft is further sleeved with the reset spring, the baffle used for limiting the bottom end of the reset spring is arranged inside the pen shell, the button is loosened after the button drives the central rotating shaft to move downwards, and the central rotating shaft can be driven to move upwards for resetting through the reset spring.

In the technical scheme, the central rotating shaft is further provided with the air exhaust impeller, the pen shell is provided with the air exhaust port, the pen shell is internally provided with the filter layer, and during work, the central rotating shaft drives the air exhaust impeller to generate negative pressure to suck leather scraps on paper into the opening part of the dust collection cover.

The pen-type dust-free automatic eraser of the embodiment is used as follows:

when a small range or a specific point needs to be accurately erased, the shaft sleeve completely sleeves the flexible deformable section, the micro motor is started, the central rotating shaft drives the eraser head at the bottom end of the shaft sleeve to rotate, the flexible deformable section of the central rotating shaft is always kept in a vertical state under the restraint of the shaft sleeve and cannot deform in the rotating process, and a user touches the bottom of the eraser head to a target position to erase the small range or the specific point.

When a large-scale erasing is needed, the shaft sleeve is moved to a position where the shaft sleeve is separated from the flexible deformable section, the micro motor is started, the central rotating shaft drives the eraser head at the bottom end to rotate, a user presses the eraser head downwards in an inclined mode according to actual requirements, so that the flexible deformable section of the central rotating shaft can deform, the eraser head is enabled to be in rotating contact with the paper surface at a certain inclined angle to erase, and the elliptical cone-shaped eraser head can be in rotating contact with the paper surface in an inclined mode, so that the contact area between the eraser head and the paper surface can be large, and the large-scale erasing can be carried out.

The invention has the advantages and beneficial effects that:

the pen type dust-free automatic eraser adopts a motor driving mode, is convenient to use, and saves time and labor; meanwhile, the eraser has a wiping range switching function, can erase specific points in a small range and can be switched into a large-range erasing mode, and a user can conveniently adjust the wiping range, so that the actual use requirement of the user is met.

Drawings

Fig. 1 is a schematic structural view of a pen-type dust-free automatic eraser according to a first embodiment of the present invention.

FIG. 2 is a schematic structural view of a pen-type dust-free automatic eraser according to a first embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a eraser head according to a first embodiment of the invention.

Fig. 4 is a schematic structural diagram of a passage on a pen case according to a first embodiment of the present invention.

Fig. 5 is a schematic structural view of a dust collection cover according to a second embodiment of the present invention.

FIG. 6 is a schematic view showing the structure of a pen-type dust-free automatic eraser according to a third embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a modified cutter cover in the third embodiment of the invention.

Fig. 8 is a sectional view of a connection portion between the top end of the central rotating shaft and the output shaft of the micro motor in the third embodiment of the present invention.

Fig. 9 is a schematic structural diagram of a slide rail on a pen case according to a third embodiment of the present invention.

FIG. 10 is a schematic view showing the structure of a pen-type dust-free automatic eraser according to a fourth embodiment of the present invention.

For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the present invention is further described below with reference to specific examples.

Example one

Referring to the attached figures 1-4, the pen type dust-free automatic eraser comprises a pen shell 1, a central rotating shaft 2, a micro motor 3, an eraser head 4, a shaft sleeve 5 and a shaft sleeve toggle button 6.

The micro motor 3 and the central rotating shaft 2 are arranged in the pen shell 1, and the top end of the central rotating shaft 2 is connected with an output shaft of the micro motor 3, so that the micro motor 3 drives the central rotating shaft 2 to rotate; the eraser head 4 is fixedly arranged at the bottom end of the central rotating shaft 2, and the eraser head 4 is driven to synchronously rotate when the central rotating shaft 2 rotates.

The lower part of the central rotating shaft 2 is provided with a flexible deformable section 2-1, the length of the flexible deformable section is preferably 1-1.5cm, the shaft sleeve 5 is sleeved on the central rotating shaft 2, the shaft sleeve 5 is connected with a shaft sleeve toggle button 6, the shaft sleeve 5 can be driven to slide up and down on the central rotating shaft 2 along the central rotating shaft 2 by toggling the shaft sleeve toggle button 6, and the length of the shaft sleeve 5 is larger than that of the flexible deformable section. When in use, the shaft sleeve 5 has two working positions, one is that the shaft sleeve 5 completely sleeves the flexible deformable section, so that the flexible deformable section is always kept in a vertical state under the constraint of the shaft sleeve 5 and cannot be bent and deformed; the other is that the flexible deformable section is exposed out of the sleeve 5, so that the constraint of the sleeve 5 is lost, and the flexible deformable section is deformed under the action of external force (the user presses the eraser head 4 obliquely downwards).

Referring to fig. 3, the eraser head 4 is of an elliptic cone type. Further, the center of the eraser head 4 is provided with a jack 4-1, the bottom end of the central rotating shaft 2 is inserted into the jack 4-1 so as to be connected with the eraser head 4, the cross section of the jack and the cross section of the bottom end of the central rotating shaft 2 are both square, so that the central rotating shaft 2 and the eraser head 4 cannot rotate relatively.

Furthermore, a hard rubber core 4-2 is embedded in the axis position inside the rubber head 4, the hard rubber core is cylindrical and has the diameter of 1-2mm, the material of the hard rubber core is selected from rubber materials with high hardness and low flexibility, the withstand pressure is about 100 +/-10 KPa, the bottom end of the hard rubber core extends out of the bottom surface of the rubber head by about 1mm, and specific points can be accurately erased through the hard rubber core.

Further, referring to fig. 4, a section of channel 1-3 is opened on the pen casing 1, and the shaft sleeve toggle button 6 is installed in the channel, so that the shaft sleeve toggle button 6 can be toggled up and down.

Further, a pen cap 1-1 is arranged at the top of the pen shell 1.

Further, a power module and a corresponding control circuit are further arranged inside the pen shell 1, so that power supply and motor control are realized.

Furthermore, a button 1-2 is arranged on the upper side of the pen shell 1.

The pen-type dust-free automatic eraser of the embodiment is used as follows:

when a small range or a specific point needs to be accurately erased, the shaft sleeve 5 completely sleeves the flexible deformable section, the micro motor is started, the central rotating shaft 2 drives the eraser head 4 at the bottom end of the central rotating shaft to rotate, the flexible deformable section of the central rotating shaft 2 is always kept in a vertical state under the constraint of the shaft sleeve 5 and cannot be deformed in the rotating process, and a user contacts the bottom of the eraser head 4 with a target position to erase the small range or the specific point.

When a large-scale erasing is needed, the shaft sleeve 5 is moved to a position where the shaft sleeve is separated from the flexible deformable section, the micro motor is started, the central rotating shaft 2 drives the rubber head 4 at the bottom end to rotate, a user inclines to press down the rubber head 4 according to actual requirements, so that the flexible deformable section of the central rotating shaft can deform, the rubber head 4 is enabled to be in rotating contact with a paper surface at a certain inclination angle to be erased, and the elliptical cone-shaped rubber head 4 can incline to be in rotating contact with the paper surface, so that the contact area between the rubber head 4 and the paper surface is large, and the large-scale erasing can be carried out.

Example two

On the basis of the first embodiment, referring to fig. 5, further, a dust collection cover 10 is further fitted at the bottom of the pen shell 1. The top port of the dust collection cover 10 can be sleeved at the bottom of the pen shell 1, an opening part 10-1 is formed in the dust collection cover 10, and the dust collection cover 10 is made of silica gel or rubber, so that when the dust collection cover is used, the lower edge of the opening part 10-1 can deform to be attached to a paper surface, and leather scraps generated by the eraser head 4 can enter the dust collection cover 10 under the rotating action of the eraser head 4.

EXAMPLE III

On the basis of the first embodiment, referring to fig. 6-9, further, the bottom of the pen shell 1 is also matched with a modified knife cover 11, and the shape of the eraser head 4 changes after being used for a period of time, so that the eraser head needs to be modified, and therefore, the modified knife cover 11 is added in the first embodiment. The top port of the shaping knife cover 11 can be sleeved at the bottom of the pen shell 1 to cover the eraser head 4, and an arc-shaped shaping knife 11-1 is embedded in the shaping knife cover 11. After the shaping knife cover 11 is installed at the bottom of the pen casing 1, in an initial state, a certain gap is formed between the shaping knife 11-1 and the eraser head 4, so that the shaping knife cannot contact with the eraser head 4, the eraser head 4 needs to be moved downwards, and the central rotating shaft drives the eraser head 4 to rotate, so that the shaping of the eraser head can be completed.

The structure of the driving mechanism is as follows: the top end of the central rotating shaft 2 is connected with the output shaft 3-1 of the micro motor 3 through a vertical sliding structure, so that the central rotating shaft 2 has a degree of freedom of moving along the axial direction of the output shaft 3-1 of the micro motor 3, but the two do not have a degree of freedom of relative rotation, specifically, referring to the attached drawing 8, the top end of the central rotating shaft 2 is embedded in the output shaft 3-1 of the micro motor, two symmetrically arranged slideways a are arranged between the central rotating shaft 2 and the output shaft 3-1 of the micro motor and are arranged along the axial direction of the central rotating shaft 2, so that the central rotating shaft 2 can vertically slide in the output shaft 3-1 of the micro motor 3 along the axial direction of the central rotating shaft, and the output shaft 3-1 of the micro motor 3 can synchronously drive the central rotating; a circle of bosses 2-2 are arranged on a central rotating shaft 2, a button 7 used for being matched with the bosses 2-2 is arranged on a pen shell 1, the button 7 is installed in a slide way 1-4 (figure 9) of the pen shell 1, the slide way 1-4 is arranged in the vertical direction of the pen shell 1, so that the button 7 can move up and down along the slide way 1-4, the tail end of the button 7 is of a groove structure, after the button 7 is pressed down, a tail end groove of the button can be matched with the bosses 2-2 on the central rotating shaft, then the button 7 is moved down along the slide way 1-4, the button 7 can drive the whole central rotating shaft 2 to move down, and then the central rotating shaft 2 drives an eraser head 4 to move down, so that the button is contacted with a shaping knife 11-1 in a shaping knife cover 11.

Further, still the cover is equipped with reset spring 8 on central pivot 2, is provided with in that shell 1 is inside to be used for carrying out spacing baffle 9 to reset spring 8 bottom, moves down the back when button 7 drives central pivot 2, loosens the button, can drive central pivot 2 through reset spring 8 and shift up the restoration.

Example four

On the basis of the second embodiment, referring to fig. 10, further, an air-extracting impeller 13 is further installed on the central rotating shaft, an air outlet 14 is arranged on the pen shell, and a filter layer 15 is arranged in the pen shell. When the dust collection cover 10 works, the central rotating shaft drives the air exhaust impeller 13 to generate negative pressure, and leather scraps on paper are sucked into the opening part of the dust collection cover 10.

Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.

The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.

Claims (9)

1. A pen type dust-free automatic eraser is characterized in that: comprises a pen shell, a central rotating shaft, a micro motor, an eraser head, a shaft sleeve and a shaft sleeve toggle button;

the micro motor and the central rotating shaft are arranged in the pen shell, the top end of the central rotating shaft is connected with an output shaft of the micro motor, the eraser head is fixedly arranged at the bottom end of the central rotating shaft, and the eraser head is elliptic cone;

the lower part of the central rotating shaft is provided with a flexible deformable section, the shaft sleeve is sleeved on the central rotating shaft, the shaft sleeve is connected with a shaft sleeve toggle button, the shaft sleeve can be driven to slide up and down on the central rotating shaft along the central rotating shaft by toggling the shaft sleeve toggle button, the length of the shaft sleeve is greater than that of the flexible deformable section, when the flexible shaft sleeve is used, the shaft sleeve has two working positions, one is that the shaft sleeve completely sleeves the flexible deformable section, and the flexible deformable section is always kept in a vertical state under the restraint of the shaft sleeve and cannot be bent and deformed; the other one is that the flexible deformable section is exposed out of the shaft sleeve and loses the constraint of the shaft sleeve;

the bottom of the pen shell is also matched with a shaping knife cover, the top port of the shaping knife cover can be sleeved at the bottom of the pen shell to cover the eraser head, and an arc-shaped shaping knife is embedded in the shaping knife cover.

2. A pen-type dust-free automatic eraser according to claim 1, characterized in that: the center of the eraser head is provided with an insertion hole, and the bottom end of the central rotating shaft is inserted into the insertion hole.

3. A pen-type dust-free automatic eraser according to claim 1, characterized in that: the hard rubber core is embedded in the axis position inside the rubber head, the hard rubber core is cylindrical, the diameter of the hard rubber core is 1-2mm, the material of the hard rubber core is selected from rubber materials with high hardness and low flexibility, the bottom end of the hard rubber core extends out of the bottom surface of the rubber head, and specific points can be accurately erased through the hard rubber core.

4. A pen-type dust-free automatic eraser according to claim 1, characterized in that: a section of channel is opened on the pen shell, and the shaft sleeve toggle button is installed in the channel so as to be capable of being toggled up and down.

5. A pen-type dust-free automatic eraser according to claim 1, characterized in that: the pen shell is characterized in that the bottom of the pen shell is also matched with a dust collection cover, the dust collection cover is provided with an opening, the dust collection cover is made of silica gel or rubber, when the pen shell is used, the lower edge of the opening can deform to be attached to a paper surface, and leather scraps generated by the eraser head can enter the dust collection cover under the rotating action of the eraser head.

6. A pen-type dust-free automatic eraser according to claim 1, characterized in that: the pen type dust-free automatic eraser is provided with a driving mechanism for driving an eraser head to move up and down, and the driving mechanism has the structure that: the top end of the central rotating shaft is connected with the output shaft of the micro motor through a vertical sliding structure, so that the central rotating shaft has the freedom degree of axial movement along the output shaft of the micro motor, but the central rotating shaft and the output shaft do not have the freedom degree of relative rotation; be provided with the round boss in central pivot, and be provided with one on the shell of a pen be used for with boss complex button, the button is installed in the slide of shell of a pen, the slide sets up along the vertical direction of shell of a pen, so that the button can reciprocate along the slide, the end of button is groove structure, its terminal recess can with the epaxial boss cooperation of central pivot after the button is pressed, then move the button along the slide downwards, the button can drive whole central pivot downstream, and then central pivot drives the rubber head downstream, realize and the shaping sword contact in the shaping blade casing.

7. A pen-type dust-free automatic eraser according to claim 6, characterized in that: still the cover is equipped with reset spring in central pivot, is provided with in the shell of a pen and is used for carrying out spacing baffle to the reset spring bottom, drives the central pivot back that moves down when the button, loosens the button, can drive central pivot through reset spring and shift up the restoration.

8. A pen-type dust-free automatic eraser according to claim 5, characterized in that: the central rotating shaft is also provided with an air exhaust impeller, the pen shell is provided with an air exhaust port, and the pen shell is internally provided with a filter layer.

9. The method of using a pen-type dust-free automatic eraser according to claim 1, characterized in that:

when a small range or a specific point needs to be accurately erased, the shaft sleeve completely sleeves the flexible deformable section, the micro motor is started, the central rotating shaft drives the eraser head at the bottom end of the shaft sleeve to rotate, the flexible deformable section of the central rotating shaft is always kept in a vertical state under the restraint of the shaft sleeve and cannot deform in the rotating process, and a user touches the bottom of the eraser head to a target position to erase the small range or the specific point;

when a large-scale erasing is needed, the shaft sleeve is moved to a position where the shaft sleeve is separated from the flexible deformable section, the micro motor is started, the central rotating shaft drives the eraser head at the bottom end to rotate, a user presses the eraser head downwards in an inclined mode according to actual requirements, so that the flexible deformable section of the central rotating shaft can deform, the eraser head is enabled to be in rotating contact with the paper surface at a certain inclined angle to erase, and the elliptical cone-shaped eraser head can be in rotating contact with the paper surface in an inclined mode, so that the contact area between the eraser head and the paper surface can be large, and the large-scale erasing can be carried out.

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