CN204020347U - A kind of electric dust absorption blackboard eraser - Google Patents

Abstract

The utility model discloses a kind of electric dust absorption blackboard eraser, comprise housing (3), be installed on the blackboard eraser (1) of housing (3) inner side, and and housing (3) be connected and be located at the electrical equipment installing plate (2) between blackboard eraser (1), housing (3); Also comprise the handle (4) perpendicular to the length direction of blackboard eraser (1), the upper end of handle (4) is connected with housing (3) or with installing plate (2), in use, blackboard eraser plane, handle are angle between (4).Handle and blackboard eraser plane form an angle and more conform with the custom of people in the time writing letter written with chalk, also meet the theory of ergonomics, make in process that operator erases the board more easily to the blackboard application of force and then improve the efficiency erasing the board.In addition, this handle makes operator's arm can be far away apart from blackboard, has reduced dust and enter the probability of operator's nasal cavity.Therefore, this blackboard eraser is in use time saving and energy saving, can also reduce the soakage of user to dust, ensures health of human body.

Description

A kind of electric dust absorption blackboard eraser

Technical field

The utility model relates to realia technical field, relates in particular to a kind of electric dust absorption blackboard eraser.

Background technology

It is low that electric dust absorption blackboard eraser has mainly overcome common blackboard eraser efficiency, the drawbacks such as dust from flying.When use, can make teachers and students easily letter written with chalk be wiped clean, and can not produce chalk dust, greatly change the inside and outside sanitation and hygiene in classroom, be of value to the healthy of teachers and students, can create a good teaching environment.

The inside of electric dust absorption blackboard eraser is provided with motor, on the rotor of motor, connects turbine fan, and fan rear portion is provided with stored ash box.After power connection, electric machine rotation, drives fan to rotate, and hairbrush contact blackboard is wiped writing, under the wind-force effect that the dust producing produces at fan, moves to backward in stored ash box.

But, existing blackboard eraser is generally box like structure, need people to hold housing and carry out wiping, for the less students in middle and primary schools of height, when the higher part of blackboard wiping, must stretch arm and just can get at, because of this person's arm very near apart from blackboard, the dust that part is not absorbed by blackboard eraser enters the nasal cavity of human body, affects personal safety.In addition, need the arm stretching to apply vertical power to blackboard in wiping process, cause comparatively effort of operation, the time of the cost that erases the board is also longer.

In view of this, urgently for above-mentioned technical problem, electric dust absorption blackboard eraser of the prior art is done to further optimal design, make it more laborsaving in use procedure, and reduce the soakage of user to dust, ensure health of human body.

Utility model content

The purpose of this utility model is for providing a kind of electric dust absorption blackboard eraser, and it is in use time saving and energy saving, can also reduce the soakage of user to dust, ensures health of human body.

For solving the problems of the technologies described above, the utility model provides a kind of electric dust absorption blackboard eraser, comprises housing, is installed on the blackboard eraser of described housing inner side, and and described housing be connected and be located at the electrical equipment installing plate between described blackboard eraser, described housing; Also comprise the handle perpendicular to the length direction of described blackboard eraser, the upper end of described handle is connected with described housing or with described installing plate, in use, between described blackboard eraser plane, described handle, is angle.

Preferably, described housing or described installing plate are provided with locating dowel, and described locating dowel is connected with described handle, so that be fixing angle between described blackboard eraser plane, described handle.

Preferably, the sidewall of described locating dowel is provided with the first screw thread, and described handle upper end is formed and is threaded with described the first screw thread by the second screw thread;

Or the sidewall of described locating dowel, the described handle upper end one in the two is provided with buckle, another one in the two is provided with draw-in groove, described buckle and described draw-in groove clamping.

Preferably, described locating dowel is hollow locating dowel, described hollow locating dowel is located at the inner side of described housing, described handle is the hollow-core construction that is connected in described locating dowel inside, the motor of described blackboard eraser is connected on described installing plate, and described handle, described locating dowel correspondence are set in the periphery of described motor;

Or described locating dowel is hollow locating dowel, and described hollow locating dowel is located at the outside of described housing, described handle is connected in described locating dowel inside;

Or described locating dowel is located at the outside of described housing, described handle is connected in described locating dowel outside.

Preferably, described handle is straight-bar structure, and described locating dowel is along the setting party of described handle to extension;

Or described handle upper end is that described kink is perpendicular to described blackboard eraser plane with respect to the kink of the main body bending of described handle, and described locating dowel is perpendicular to described hull outside wall.

Preferably, described handle upper end and described housing are rotatably connected by horizontal bearing pin, so that the angle between described blackboard eraser plane, described handle is adjustable.

Preferably, described bearing pin is to be located at both sides, described handle upper end, laterally extending extension rod, described housing is provided with two lug bosses corresponding with described extension rod outward, described lug boss is provided with the located lateral hole that cross section is greater than described extension rod, and described extension rod two ends are located at respectively in two described locating holes.

Preferably, two described lug bosses are all one-body molded with described housing, and described extension rod two ends are installed on by compression in two described locating holes and flick, to realize and being rotatably connected of described housing.

Preferably, at least one in two described lug bosses and described housing are split-type structural, removably connect by threaded fastener and described housing.

Preferably, the length range of described blackboard eraser is 20cm～40cm, and the width range of described blackboard eraser is 8cm～14cm.

Preferably, also comprise charger, the charging circuit board of wherein said charger is integrated in a side of described installing plate, the opposite side of described installing plate arranges battery case, fan and described motor are set between described charging circuit board, described battery case, the top of described motor and fan arranges charging plug, and described charging plug is plug-type plug.

Preferably, also comprise stored ash box, described stored ash box is located at the below of described blackboard eraser, and the opening of described stored ash box is towards inner side, and described opening part is snapped with transparent cover plate.

The utility model provides a kind of electric dust absorption blackboard eraser, it comprises the handle perpendicular to the length direction of described blackboard eraser, the upper end of described handle is connected with described housing or with described installing plate, in use, between described blackboard eraser plane, described handle, is angle.

In use procedure, operating personnel can hold the upper and lower wiping of handle, and handle can increase certain length, make classmate that height is lower also can easily wipe the top of blackboard.The most important thing is, due to the setting that forms an angle of handle and blackboard eraser plane, more conform with people are angle in the time writing letter written with chalk custom between arm and blackboard, also more meet the theory of ergonomics, compared with electrical dust-removing blackboard eraser of the prior art, make in process that operator erases the board more easily to the blackboard application of force and then improve the efficiency erasing the board.In addition, operator holds this handle, make its arm can be far away apart from blackboard, compared with prior art, has also reduced dust and enter the probability of operator's nasal cavity, has ensured operator's health of human body.

Brief description of the drawings

The structural representation of a kind of detailed description of the invention that Fig. 1 is electric dust absorption blackboard eraser that the utility model provides;

Fig. 2 is the upward view of Fig. 1;

Fig. 3 is the structural representation of handle in Fig. 1;

Fig. 4 is the upward view of Fig. 1 middle shell and handle;

Fig. 5 is the top view of installing plate in Fig. 1;

Fig. 6 is the installation site figure of the motor on installing plate shown in the locating dowel of housing shown in Fig. 4 and Fig. 5;

Fig. 7 is the structural representation of another angle of installing plate shown in Fig. 5;

Fig. 8 is the not structural representation of a kind of detailed description of the invention when mounting handle of blackboard eraser shown in Fig. 1;

Fig. 9 is the not structural representation of another kind of detailed description of the invention when mounting handle of blackboard eraser shown in Fig. 1;

Figure 10 is the structural representation of the handle that coordinates with housing shown in Fig. 9;

Figure 11 is the not structural representation of another kind of detailed description of the invention when mounting handle of blackboard eraser shown in Fig. 1;

Figure 12 is the structural representation of the handle of the cooperation of housing shown in Figure 11;

Figure 13 is the not structural representation of another detailed description of the invention when mounting handle of blackboard eraser shown in Fig. 1;

Figure 14 is the structural representation of the handle of the cooperation of housing shown in Figure 13;

Figure 15 is the structural representation of another kind of detailed description of the invention when handle when blackboard eraser is not installed shown in Fig. 1;

Figure 16 is the structural representation of the further scheme of locating dowel shown in Figure 15;

Figure 17 is the structural representation of the another kind of detailed description of the invention of installing plate in Fig. 1;

Figure 18 is the structural representation of another detailed description of the invention of installing plate in Fig. 1;

The structural representation of the another kind of detailed description of the invention that Figure 19 is electric dust absorption blackboard eraser that the utility model is carried;

Figure 20 is the side view of Figure 19;

Figure 21 is the structural representation of handle in Figure 19;

Figure 22 removes the structural representation after handle in Figure 19;

Figure 23 is the structural representation of the another kind of detailed description of the invention of Figure 19 protrusions portion.

Wherein, the corresponding relation between Reference numeral and the component names in Fig. 1 to Figure 23 is:

Blackboard eraser 1; Bristle 11;

Installing plate 2; Charging circuit board 21; Battery case 22; Fan 23; Charging plug 24; Push-pull button 25; Motor 26; Main circuit board 27; Connecting hole 28; Plug mounting box 29;

Housing 3; Lug boss 31; Locating hole 32; Stored ash box 33; Cover plate 34; Air-vent 341 screen packs 342; Locating dowel 35; The second strengthening part 351; The first screw thread 36; Limited step 37; Screwed hole 371; Button 38; Relay indicating light 39; Draw-in groove 30;

Handle 4; The second screw thread 41; Bearing pin 42; Leather sheath 43; Buckle 44; The first strengthening part 45.

Detailed description of the invention

Core of the present utility model is for providing a kind of electric dust absorption blackboard eraser, and this blackboard eraser is in use time saving and energy saving, can also reduce the soakage of user to dust, ensures health of human body.

In order to make those skilled in the art understand better the technical solution of the utility model, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

It should be noted that, the noun of locality that occurs herein " on ", left side, right side in Fig. 1 of referring to respectively of D score, the noun of locality " laterally ", " level " are the length direction of blackboard eraser 1, and the noun of locality " inner side " refers near a side, " outside " of blackboard eraser 1 and refers to the side near housing 3; Should be appreciated that the custom of these nouns of locality person's routine use blackboard eraser that is all binding operation and Figure of description and set up, their appearance should not affect protection domain of the present utility model.

Please refer to Fig. 1 to Fig. 2, the structural representation of a kind of detailed description of the invention that Fig. 1 is electric dust absorption blackboard eraser that the utility model provides, the upward view that Fig. 2 is Fig. 1.

In a kind of detailed description of the invention, as shown in Figure 1 to Figure 2, the utility model provides a kind of electrical dust-removing blackboard eraser, comprise the blackboard eraser 1, electrical equipment installing plate 2 and the housing 3 that set gradually from inside to outside, wherein blackboard eraser 1, installing plate 2 are all connected on housing 3, bristle 11 are set, for blackboard wiping on blackboard eraser 1, the electrical equipments such as motor 26, fan 23 and main circuit board 27 are set on installing plate 2, and housing 3 is for covering on the outside of blackboard eraser 1 and installing plate 2.This blackboard eraser also comprises the handle 4 perpendicular to the length direction of blackboard eraser 1, and the upper end of handle 4 is connected with housing 3 or with described installing plate, in use, between blackboard eraser plane, handle 4, is angle setting.

In use procedure, operating personnel first start the button 38 of blackboard eraser, and relay indicating light 39 is bright, and fan 23 rotates and forms air-flow, this air-flow flows out by the air vent 341 on the cover plate 34 of stored ash box 33 laterally, the dust on the blackboard eraser 1 of its inner side is sucked to stored ash box simultaneously.In this process, operating personnel hold handle wiping Shang Xia 4, and handle 4 can increase certain length, make classmate that height is lower also can easily wipe the top of blackboard.The most important thing is, due to the setting that forms an angle of handle 4 and blackboard eraser plane, more conform with people are angle in the time writing letter written with chalk custom between arm and blackboard, also more meet the theory of ergonomics, compared with electrical dust-removing blackboard eraser of the prior art, make in process that operator erases the board more easily to the blackboard application of force and then improve the efficiency erasing the board.In addition, operator holds this handle 4, make its arm can be far away apart from blackboard, compared with prior art, has also reduced dust and enter the probability of operator's nasal cavity, has ensured operator's health of human body.Further, above-mentioned handle 4 lower ends can be set with leather sheath 43, and convenient operation person grips like this.

In a kind of concrete scheme, described housing 3 or installing plate 2 are provided with locating dowel 35, and described locating dowel 35 is connected with described handle 4, so that be fixing angle between described blackboard eraser plane, described handle 4.

Particularly, the sidewall of described locating dowel 35 is provided with the first screw thread 36, and described handle 4 upper ends are formed and are threaded with described the first screw thread 36 by the second screw thread 41.Adopt this structure, can realize simply, easily installation, dismounting between handle 4 and housing 3, and the cost of machining screw is lower.

More specifically in scheme, as shown in Fig. 3 to Fig. 7, Fig. 3 is the structural representation of handle in Fig. 1, Fig. 4 is the upward view of Fig. 1 middle shell and handle, Fig. 5 removes the top view after housing in Fig. 1, Fig. 6 is the installation site figure of the motor on installing plate shown in the locating dowel of housing shown in Fig. 4 and Fig. 5, and Fig. 7 is the structural representation of another angle of installing plate shown in Fig. 5.Described locating dowel 35 is hollow locating dowel, and described hollow locating dowel is located at the inner side of described housing 3, and described the first screw thread 36 is internal thread, and described the second screw thread 41 is external screw thread; The motor 26 of described blackboard eraser is connected on described installing plate 2, and described handle 4, described locating dowel 35 correspondences are set in the periphery of described motor 26.

Because internal thread 36 is connected the certain length of fit guarantee stable connection of needs with external screw thread 41, therefore locating dowel 35 must have certain length and could be connected with handle 4 is stable, and locating dowel 35 is set in to the structure of motor 26 peripheries, locating dowel 35 and motor 26 on taking, height space are had certain overlapping, this structure can ensure the stable connection of handle 4, can not increase again the integral thickness of blackboard eraser, there is rationally distributed, joint space-efficient advantage.

Can expect, above-mentioned locating dowel 35 is not limited in the inner side of being located at housing 3, in another kind of concrete scheme, as shown in Figure 8, Fig. 8 is the not structural representation of a kind of detailed description of the invention when mounting handle of blackboard eraser shown in Fig. 1, and in this figure, locating dowel 35 is hollow locating dowel, and described hollow locating dowel is located at the outside of described housing 3, described the first screw thread 36 is external screw thread, and described the second screw thread 41 is internal thread.

Or in another kind of concrete scheme, as shown in Figure 9 and Figure 10, Fig. 9 is the not structural representation of another kind of detailed description of the invention when mounting handle of blackboard eraser shown in Fig. 1; Figure 10 is the structural representation of the handle that coordinates with housing shown in Fig. 9, and above-mentioned locating dowel 35 is located at the outside of described housing 3, and described the first screw thread 36 is external screw thread, and described the second screw thread 41 is internal thread.

Locating dowel 35 is located to the outside of housing 3, can be realized simply, easily blackboard eraser plane equally, handle 4 is fixed angle.

It should be noted that, establish externally threaded structure for handle 4 upper ends, handle 4 can be hollow-core construction, can be also solid construction, for the control of production cost, preferably handle is made as to hollow-core construction.In like manner, establish externally threaded structure for locating dowel 35, locating dowel 35 can be hollow-core construction, can be also solid construction, preferably locating dowel 35 is made as to hollow-core construction.

In addition, as shown in Fig. 8, Fig. 9 and Figure 11, because locating dowel 35 is obliquely installed, therefore in the process being threaded with handle 4 upper ends, locating dowel 35 can not realize with handle 4 and being connected near the trigonum of housing 3, therefore, only need screw thread be set at the cylindrical section in locating dowel 35 outsides, and in trigonum without screw thread is set.In addition, the diameter of cylindrical section can be less than the cross section of the trigonum being attached thereto, the difference of the two radius equals the wall thickness of handle 4, like this, after handle 4 is installed in locating dowel 35, the outer wall of handle 4 flushes with the outer wall of trigonum, makes handle 4 uniform with the assembly of locating dowel 35, overall appearance.

In addition, locating dowel 35 is with handle 4 only for being threaded connection, and in another kind of concrete scheme, as shown in Figure 11 and Figure 12, Figure 11 is the not structural representation of another kind of detailed description of the invention when mounting handle of blackboard eraser shown in Fig. 1; Figure 12 is the structural representation of handle that housing shown in Figure 11 coordinates, and the sidewall of described locating dowel 35, the described handle 4 upper ends one in the two is provided with buckle 44, another one in the two is provided with draw-in groove 30, described buckle 44 and described draw-in groove 30 clampings.Adopt this structure, can make equally the two keep fixed angle.

Structure for locating dowel 35 with handle 4 clampings, is threaded similarly with above-mentioned, and the set-up mode of locating dowel 35 can have varied, for example: locating dowel 35 can be located at the outside of housing 3, also can be located at the inner side of housing 3; When handle 4 is connected in the inside of locating dowel 35, handle 4 can be hollow or solid; When handle 4 is connected in the outside of locating dowel 35, locating dowel 35 can be hollow or solid.

In addition, the structure of above-mentioned handle also can have varied.

As previously mentioned, described handle 4 is straight-bar structure, and described locating dowel 36 is along the setting party of described handle 4 to extension.This handle 4 has advantages of simple in structure, easy to process.

In another kind of scheme, for example, shown in Figure 13, Figure 14, above-mentioned handle 4 upper ends can be also that described kink is perpendicular to described blackboard eraser plane with respect to the kink of the main body bending of described handle 4, and described locating dowel 35 is perpendicular to described housing 3 lateral walls.

Adopt this structure, because locating dowel 35 is perpendicular to the lateral wall of housing 3, the scheme being obliquely installed with respect to locating dowel 35, can simplify the integral molding technique of housing 3.Further, as shown in figure 14, the bending place of handle 4 can arrange with integrated the first strengthening part 45, the first strengthening parts 45 of handle 4 can increase the intensity of bending place, avoids handle 4 in the process of erasing the board that phenomenon of rupture occurs in bending place.It should be noted that, this first strengthening part 45, not only for the muscle shape of bar shaped, can be also block, or around the handle 4 bending place ring-types of a week.In addition, the wall thickness of handle 4 bending places can be greater than the wall thickness of other position, like this, can play equally and increase the effect of intensity, avoids phenomenon of rupture, improves blackboard eraser service life.

In another scheme, please refer to Figure 15, Figure 15 is the structural representation of another kind of detailed description of the invention when handle when blackboard eraser is not installed shown in Fig. 1, in another kind of scheme, also locating dowel 35 can be made as to bending structure, its base extends along the direction of handle 4 perpendicular to housing 3 lateral walls, connecting portion, and connecting portion is threaded or clamping with handle 4.The locating dowel 35 of this structure is applicable to straight-bar type handle 4.

Further in scheme, as shown in Fig. 4, Fig. 6, the locating dowel 35 of being located at housing 3 inner sides can be provided with and integrated the second strengthening part 351 of locating dowel 35 with the joint of housing 3, this the second strengthening part 351 can be strengthened the intensity of this locating dowel 35, avoids locating dowel 35 in wiping process to rupture.In addition, as shown in figure 16, Figure 16 is the structural representation of the further scheme of locating dowel shown in Figure 15; The below of being located at locating dowel 35 bending places in housing 3 outsides also can be provided with integrated the second strengthening part 351, for strengthening the intensity of locating dowel 35, avoids occurring in wiping process the phenomenon that locating dowel 35 ruptures.By that analogy, for the locating dowel 35 being located on installing plate 2, also can above-mentioned the second strengthening part 351 be set at locating dowel 35 and the joint of installing plate 2, for increasing intensity.

It should be noted that, this second strengthening part 351, not only for the muscle shape of bar shaped, can be also block, or around the locating dowel ring-type of 35 1 weeks.In addition, the wall thickness of locating dowel 35 and housing 3 joints or locating dowel 35 and the wall thickness of installing plate 2 joints or the wall thickness of locating dowel 35 bending places can be greater than the wall thickness of other position, like this, can play equally the effect of increase intensity, avoid phenomenon of rupture, improve blackboard eraser service life.

For the structure of locating dowel 35 and handle 4 clampings, the cross section of handle 4 can have various ways, and for example circle, ellipse, square, triangle etc. all can.

Can expect, the structure that above-mentioned handle 4 forms fixed angle with blackboard eraser plane, not only for being threaded, can also be directly welded in handle 4 upper ends on housing 3.

The sidewall of above-mentioned housing 3 is provided with draw-in groove, blackboard eraser 1 sidewall is provided with buckle, the two clamping.As shown in Figure 4 and Figure 5, the sidewall of above-mentioned housing 3 is provided with limited step 37, this limited step 37 is provided with screwed hole 371, the surrounding of installing plate 2 is provided with the connecting hole 28 coordinating with this screwed hole 371, when installation, first installing plate 2 correspondences are positioned over to the inner side of limited step 37, then to mounting screw in connecting hole 28, screwed hole 371, to realize being fixedly connected with of installing plate 2 and housing 3.Adopt this structure, can not only realize exactly the stable support to installing plate, can also strengthen the intensity of housing 3.The cross section of this limited step 37 can have varied, for example, can be trapezoidal, triangle, the various ways such as rectangle.

In addition, above-mentioned handle 4, only for being connected with housing 3, can also not connect in installing plate 2.In another kind of detailed description of the invention, as shown in Figure 17 and Figure 18, Figure 17 is the structural representation of the another kind of detailed description of the invention of installing plate in Fig. 1; Figure 18 is the structural representation of another detailed description of the invention of installing plate in Fig. 1; At installing plate 2, locating dowel 35 is set, and perforation is only set on housing 3.When installation, handle 4 is through the perforation of housing 3, be connected with the locating dowel 35 of installing plate 2, because the plug mounting box 29 on installing plate 2 itself has certain height, therefore locating dowel 35 has also been utilized this height, therefore this structure can ensure the stable connection of handle 4, can not cause again the whole height of blackboard eraser 1 too high.

With the structure similar that is located at the locating dowel 35 on housing 3, this locating dowel 35 can, for to be threaded with handle 4, also can be connected with handle 4 buckles.The locating dowel 35 being located on installing plate 2 also can be for being obliquely installed, and this locating dowel 35 is suitable for the straight-bar type handle shown in Figure 10 or Figure 12, as shown in figure 17; This locating dowel 35 also can vertically arrange, and this locating dowel 35 is suitable for the handle with bending structure shown in Figure 14, as shown in figure 18.

Above-mentioned handle 4 is with blackboard eraser plane only for being fixed angle, and in another kind of detailed description of the invention, handle 4 upper ends and housing 3 are rotatably connected by horizontal bearing pin 42, so that the angle between blackboard eraser plane, handle 4 is adjustable.

In the process of operator's blackboard wiping, angle between handle 4 and blackboard eraser plane is along with arm high and low position is different and change, this servo-actuated operator of making remains comfortable state to the gripping of handle 4, each highly convenient operation person to the blackboard application of force, greatly improved user's experience.While use, handle 4 turns to and the parallel plane position of blackboard eraser, deposits shared space less.In addition, because handle 4 and blackboard eraser plane are rotatably connected, make the upper and lower of blackboard eraser to putting upside down, flexible working mode is changeable.

The set-up mode of above-mentioned bearing pin can be varied, and the mode that bearing pin and housing 3 are rotatably connected also can be varied.

In a kind of detailed description of the invention, as shown in Figure 19 to Figure 21, the structural representation of the another kind of detailed description of the invention that Figure 19 is electric dust absorption blackboard eraser that the utility model is carried; Figure 20 is the side view of Figure 19; Figure 21 is the structural representation of handle in Figure 19.Bearing pin can be for being located at handle 4 both sides, upper end, laterally extending extension rod, outside housing 3, be provided with two lug bosses 31 corresponding with extension rod, lug boss 31 is provided with the located lateral hole 32 that cross section is greater than extension rod, and extension rod two ends are located at respectively in two locating holes 32.

In concrete scheme, as shown in Figure 19 and Figure 21, two lug bosses 31 are all one-body molded with housing 3, and the two ends of extension rod are installed on by compression in two locating holes 32 and flick, to realize and being rotatably connected of housing 3.

Adopt this structure, in installation process, upwards driving handle 4 is so that the extension rod of handle 4 upper ends moves to two positions between lug boss 31, continue driving handle 4, extension rod be squeezed and compress, its two ends enter in two locating holes 32, the two ends of extension rod are ejected to both sides, are connected in locating hole 32 immediately, realize being rotatably connected of handle 4 and housing 3.

In another kind of concrete scheme, as shown in Figure 21 and Figure 22, at least one in two lug bosses 31 and housing 3 are split-type structural, removably connect by threaded fastener and housing 3.

Adopt this structure, for a lug boss 31 and housing 3 split settings, another lug boss 31 and the integrated structure of housing 3, in installation process, first one end plug-in mounting of extension rod entered in integrated lug boss 31, position, again the lug boss of split 31 is connected with housing 3, make the lug boss 31 of this split cover the other end of extension rod, thereby the two ends of extension rod are installed in the locating hole 32 of lug boss 31.For two lug bosses 31 all with housing 3 splits arrange structure, only need first extension rod to be positioned over the predeterminated position that can be covered by two lug bosses 31, and then two lug bosses 31 are connected with housing 3, thereby by the locating hole 32 of the two ends installation of extension rod and lug boss 31.As can be seen here, adopt the lug boss 31 of split not wear and tear completely to realize under the prerequisite of handle 4 being rotatably connected of handle 4 and housing 3.

Can expect, above-mentioned bearing pin is not only for the extension rod of handle 4 both sides, upper end, can also be made as to the bent rod of a side, the end of this bent rod arranges external screw thread, correspondingly, on housing 3, through hole is set, when installation, by this bent rod entirety through through hole, then at the end mounting nuts of bent rod, the cross section of this nut is greater than the cross section of through hole, prevents that bent rod from passing from through hole.In addition, as shown in figure 23, the shape of above-mentioned lug boss 31 can have varied, and it can be the various shapes such as square, triangle, or example as shown in figure 23, also can be set to semiellipse type structure.

In another kind of detailed description of the invention, the length range of above-mentioned blackboard eraser 1 is 20cm～40cm, and the width range of blackboard eraser 1 is 8cm～14cm.

Adopt this structure, make more than the area of blackboard eraser 1 reaches the twice of ordinary blackboard eraser, therefore, operator carries out less action can wipe whole blackboard, has greatly improved the efficiency erasing the board.In addition, for the larger blackboard eraser of area, directly grip comparatively difficulty, easily landing from hand with hand, and handle 4 can overcome this defect, the hand-held handle 4 of operator can flexibly, stably operate larger area blackboard eraser.

In addition, the bristle of above-mentioned blackboard eraser 1 can be fixedly installed on blackboard eraser 1, bristle 11 can also be connected with fan 23, like this, fan 23 rotates, and can drive bristle 11 to rotate, so that bristle 11 Automatic erasing blackboards, the dust that wiping forms enters stored ash box 33 under the airflow function of fan.

In another kind of detailed description of the invention, as shown in Figure 5, above-mentioned electrical dust-removing blackboard eraser also comprises charger, wherein the charging circuit board 21 of charger is connected in a side of installing plate 2, the opposite side of installing plate 2 arranges battery case 22, motor 26 and fan 23 are set between charging circuit board 21, battery case 22, and the top of motor 26 and fan 23 arranges charging plug 24, and charging plug 24 is plug-type plug.Here battery case 22 is interior can install dry cell, and rechargeable battery also can be installed.

Adopt this integrated morphology, when charging, only need to promote plug 24 push-pull button 25 so that plug 24 stretch out, then plug 24 is inserted to socket chargeable, after being full of electricity, now only need promote again push-pull button 25 so that plug 24 is retracted, make blackboard eraser outward appearance clean and tidy.The charging circuit board 21 of above-mentioned charger and plug 24 are all integrated on installing plate 2, be charger and blackboard eraser over all Integration, compared with being independent of the structure outside blackboard eraser with charger in prior art, make the compact conformation, rationally distributed of blackboard eraser, and charging operations is convenient.

As depicted in figs. 1 and 2, above-mentioned electrical dust-removing blackboard eraser also comprises stored ash box 33, and described stored ash box 33 is located at the below of described blackboard eraser 1, and the opening of described stored ash box 33 is towards inner side, and described opening part is snapped with transparent cover plate 34.This transparent cover plate 34 is provided with air-vent 341, and the air stream forming when fan rotates can flow out by air-vent 341, and transparent cover plate 34 is also provided with screen pack 342, and this screen pack 342 can ensure that air stream flows out, and can avoid again dust leakage.

Adopt this structure, because stored ash box 33 is located at the below of blackboard eraser 1 and the opening of stored ash box 33 towards inner side, than the stored ash box of outward opening side, further avoid a small amount of dust leaking in stored ash box 33 to enter operator's nostril, thereby ensure health of human body.In addition, operator can observe by transparent cover plate 34 reserves of stored ash box 33 interior dust, to take off at any time cover plate 34, the dust in stored ash box 33 is outwelled.

Above a kind of electric dust absorption blackboard eraser provided by the utility model is described in detail.Applied specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.

Claims (12)

1. an electric dust absorption blackboard eraser, comprise housing (3), be installed on the blackboard eraser (1) of described housing (3) inner side, and and described housing (3) be connected and be located at the electrical equipment installing plate (2) between described blackboard eraser (1), described housing (3); It is characterized in that, also comprise the handle (4) perpendicular to the length direction of described blackboard eraser (1), the upper end of described handle (4) is connected with described housing (3) or with described installing plate (2), in use, described blackboard eraser plane, described handle are angle between (4).

2. electric dust absorption blackboard eraser according to claim 1, it is characterized in that, described housing (3) or described installing plate (2) are provided with locating dowel (35), described locating dowel (35) is connected with described handle (4), so that described blackboard eraser plane, described handle are fixing angle between (4).

3. electric dust absorption blackboard eraser according to claim 2, it is characterized in that, the sidewall of described locating dowel (35) is provided with the first screw thread (36), and described handle (4) upper end is formed and is threaded with described the first screw thread (36) by the second screw thread (41);

Or the sidewall of described locating dowel (35), described handle (4) the upper end one in the two is provided with buckle (44), another one in the two is provided with draw-in groove (30), described buckle (44) and described draw-in groove (30) clamping.

4. electric dust absorption blackboard eraser according to claim 3, it is characterized in that, described locating dowel (35) is hollow locating dowel, described hollow locating dowel is located at the inner side of described housing (3), described handle (4) is for being connected in the inner hollow-core construction of described locating dowel (35), it is upper that the motor (26) of described blackboard eraser is connected in described installing plate (2), and described handle (4), described locating dowel (35) correspondence are set in the periphery of described motor (26);

Or described locating dowel (35) is hollow locating dowel, and described hollow locating dowel is located at the outside of described housing (3), described handle (4) is connected in described locating dowel (35) inside;

Or described locating dowel (35) is located at the outside of described housing (3), described handle (4) is connected in described locating dowel (35) outside.

5. electric dust absorption blackboard eraser according to claim 4, is characterized in that, described handle (4) is straight-bar structure, and described locating dowel (35) is along the setting party of described handle (4) to extension;

Or described handle (4) upper end is the kink with respect to the main body bending of described handle (4), described kink is perpendicular to described blackboard eraser plane, and described locating dowel (35) is perpendicular to described housing (3) lateral wall.

6. electric dust absorption blackboard eraser according to claim 1, it is characterized in that, described handle (4) upper end and described housing (3) are rotatably connected by horizontal bearing pin (42), so that the angle between described blackboard eraser plane, described handle (4) is adjustable.

7. electric dust absorption blackboard eraser according to claim 6, it is characterized in that, described bearing pin (42) is for being located at described handle (4) both sides, upper end, laterally extending extension rod, outside described housing (3), be provided with two lug bosses (31) corresponding with described extension rod, described lug boss (31) is provided with the located lateral hole (32) that cross section is greater than described extension rod, and described extension rod two ends are located at respectively in two described locating holes (32).

8. electric dust absorption blackboard eraser according to claim 7, it is characterized in that, two described lug bosses (31) are all one-body molded with described housing (3), described extension rod is installed on by compression in two described locating holes (32) and flicks, to realize and being rotatably connected of described housing (3).

9. electric dust absorption blackboard eraser according to claim 7, it is characterized in that, at least one in two described lug bosses (31) and described housing (3) are split-type structural, removably connect by threaded fastener and described housing (3).

10. according to the electric dust absorption blackboard eraser described in claim 1-9 any one, it is characterized in that, the length range of described blackboard eraser (1) is 20cm～40cm, and the width range of described blackboard eraser (1) is 8cm～14cm.

11. according to the electric dust absorption blackboard eraser described in claim 1-9 any one, it is characterized in that, also comprise charger, the charging circuit board (21) of wherein said charger is integrated in a side of described installing plate (2), the opposite side of described installing plate (2) arranges battery case (22), described charging circuit board (21), fan (23) and described motor (26) are set between described battery case (22), the top of described motor (26) and fan (23) arranges charging plug (24), described charging plug (24) is plug-type plug.

12. electric dust absorption blackboard erasers according to claim 11, it is characterized in that, also comprise stored ash box (33), described stored ash box (33) is located at the below of described blackboard eraser (1), and the opening of described stored ash box (33) is towards inner side, and described opening part is snapped with transparent cover plate (34).