CN103722963B - Full-automatic dustless blackboard eraser - Google Patents

Abstract

The invention relates to a fully automatic dust-free blackboard eraser. The object is that the provided blackboard eraser should have the characteristics of convenient use, good dust removal effect, simple structure and wide application range. The technical solution is: a fully automatic dust-free blackboard eraser, including a wipe head assembly capable of removing chalk traces and a moving assembly that drives the wipe head assembly to move along the plane of the blackboard; it is characterized in that: the wipe head assembly includes a bracket, arranged on the same axis The internal friction plate and the external friction plate are rotatably positioned on the bracket, the motor that drives the internal friction plate and the external friction plate to rotate in opposite directions through a gear set, and a push rod for pushing the support to move horizontally.

Description

Automatic dust-free blackboard eraser

technical field

The invention relates to a teaching tool, in particular to a blackboard eraser.

Background technique

Blackboard is widely used in large, middle and small schools as a kind of requisite teaching tool. When using a blackboard, it is necessary to use a blackboard eraser to erase the chalk writing, which is not only time-consuming and laborious, but also produces a large amount of dust that will pollute the classroom air and seriously endanger the health of teachers and students. Although there are full-automatic blackboard erasers in the market at present, there are still the defects of inconvenient use and inability to effectively remove dust, especially not applicable to double-layer blackboards, so further improvement is required.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings in the above background technology and provide a fully automatic dust-free blackboard eraser, which should have the characteristics of convenient use, good dust removal effect, simple structure and wide application range.

The technical solution of the present invention is: a fully automatic dust-free blackboard eraser, including a wipe head assembly capable of removing chalk traces and a moving assembly that drives the wipe head assembly to move along the plane of the blackboard; it is characterized in that:

The wiper head assembly includes a bracket, an inner wiper and an outer wiper arranged on the same axis and rotatably positioned on the bracket, a motor that drives the inner wiper and the outer wiper to rotate in opposite directions through a gear set, and is used for A push rod that pushes the bracket to move horizontally;

The moving assembly includes an elevating mechanism that can drive the wiping head assembly to move vertically and a translation mechanism that can drive the elevating mechanism to move horizontally.

The translation mechanism includes an upper rail and a lower rail fixed horizontally above and below the blackboard, an upper slider and a lower slider that can move along the upper rail and the lower rail respectively, and the upper slider and the lower slider are driven by a pulley set. A translation motor for block movement.

The lifting mechanism includes a lifting guide rail and a lead screw fixed to the upper slider and the lower slider at the upper and lower ends respectively, a lifting motor driving the screw to rotate, and a screw threaded with the leading screw and can slide vertically along the lifting guide rail. Lift slider.

The inner wiper and the outer wiper are rotatably positioned on the bracket through a concentric shaft; the concentric shaft includes an inner shaft for driving the inner wiper to rotate, coaxially sleeved outside the inner shaft and used for driving the outer wiper Rotate the outer shaft.

The push rod includes a sleeve rod, a telescopic rod slidably positioned in the sleeve rod, and a power part for driving the telescopic rod; the push rod is horizontally fixed on the lifting slider and the top end of the telescopic rod is fixed to the bracket.

The inner scrubbing disc includes an inner chassis and an inner scrubbing head fixed on the inner chassis, and the outer scrubbing disc includes an outer chassis and an outer scrubbing head fixed on the outer chassis.

The fully automatic dust-free blackboard eraser also includes a dust suction assembly for collecting dust.

The dust suction assembly includes a fan that is rotatably positioned between the bracket and the inner wiper and driven by an outer shaft, a rear cover fixed on the bracket and located between the bracket and the fan, a ventilation slot formed on the rear cover, The outer cover arranged on the circumferential surface of the back cover and wrapping the outer wiper and the fan, the filter screen arranged on the back cover, the opening arranged at the bottom of the outer cover, the collecting bottle fixed at the lower part of the outer cover and the bottle mouth position is docked with the opening.

The beneficial effects of the present invention are:

The invention can complete the work of wiping and testing the blackboard fully automatically, is very convenient to use, has good dust removal effect, and has a wide application range, and can be applied to double-layer blackboards, so it has good market prospects.

Description of drawings

Fig. 1 is a schematic diagram of the three-dimensional structure of the present invention.

Fig. 2 is a three-dimensional structural schematic diagram of the translation mechanism and the lifting mechanism in the present invention.

Fig. 3 is a three-dimensional structural schematic view of the head cleaning assembly and the dust suction assembly of the present invention.

FIG. 4 , FIG. 5 and FIG. 6 are three-dimensional schematic diagrams of the decomposed structure of FIG. 3 .

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following examples.

A fully automatic dust-free blackboard eraser, including a wipe head assembly capable of removing traces of chalk, and a moving assembly that drives the wipe head assembly to move along the plane of the blackboard 10; the structure of each of the above parts is described in detail below:

1. Wiping head assembly

As shown in Figure 3 and Figure 4, in the wipe head assembly: the inner wiper 4-1 and the outer wiper 4-2 (the outer wiper is ring-shaped, and the inner wiper is located in the center of the inner ring of the outer wiper) are coaxial Arranged, and can be rotatably positioned on the bracket 4-9; the motor 4-10 drives the inner and outer wipers to rotate through the gear set (the rotation direction of the inner wiper and the outer wiper is opposite); the push rod pushes the bracket in the Move in the horizontal direction, thereby pressing the inner and outer wiping discs on the blackboard 10 .

The inner wiper and the outer wiper are rotatably positioned on the support through a concentric shaft; the concentric shaft includes an inner shaft 4-3 for driving the inner wiper to rotate, coaxially sleeved outside the inner shaft and used to drive The outer shaft 4-4 that the outer wiping disc rotates; as shown in Figure 6, the inner wiping disc includes an inner chassis 4-1-1 and an inner wiping head 4-1-2 fixed on the inner chassis (inner chassis and inner The wiping head is fixed on the inner shaft through the thread structure 4-5), and the outer wiping disc includes the outer chassis 4-2-1 and the outer wiping head 4-2-2 fixed on the outer chassis (the outer chassis and the outer wiping head are also It is fixed on the outer shaft by thread structure 4-5); the outer wiping head and the inner wiping head are arranged with a number of fixing holes 4-7 for installing the bristles 4-8; the inner wiping head and the outer wiping head can be replaced To improve the wiping effect of the present invention;

The motor drives the inner and outer wipers to rotate through a gear set, and the gear set includes a first gear 5-1 connected to the motor, a second gear 5-2 fixed to the inner shaft and meshed with the first gear, Fix the third gear 5-3 with the outer shaft, and the fourth gear 5-4 meshed with the first gear and the third gear;

The push rod includes a sleeve rod 6-1, a telescopic rod 6-2 slidably positioned in the sleeve rod, and a power part for driving the telescopic rod; the push rod is horizontally fixed on the lifting slider, and the telescopic rod The top of the bracket is fixed; the sleeve rod is shaped on a sliding groove 6-5 and a limit block 6-6, and the telescopic rod is shaped on a sliding block 6-7 that can slide along the sliding groove; the power part includes An electromagnetic coil 6-3 set in the sleeve rod for generating thrust (the telescopic rod is pushed out of the sleeve rod by electromagnetic force), and a spring 6-4 fixed at both ends on the sleeve rod and the telescopic rod for generating tension (through the spring The pulling force makes the telescopic rod retract into the sleeve rod);

2. Mobile components

As shown in FIG. 2 , the moving assembly includes a translation mechanism capable of driving the head wiping assembly to move horizontally, and a lifting mechanism capable of driving the head wiping assembly to move vertically.

In the translation mechanism, the upper guide rail 1-1 and the lower guide rail 1-2 are fixed horizontally above and below the blackboard respectively, and the upper slider 1-3 and the lower slider 1-4 move along the upper guide rail and the lower guide rail respectively, and the translation The motors (comprising the upper translation motor 1-5-1 and the lower translation motor 1-5-2) drive the upper slider and the lower slider to move through the belt wheel set.

Both the upper guide rail and the lower guide rail are fixed on the wall through right-angle frames 1-6 (including four right-angle frames); the upper and lower translation motors are also fixed on the wall through right-angle frames. The pulley set includes an upper pulley set driven by an upper translation motor and a lower pulley set driven by a lower translation motor; the upper pulley set includes two upper pulleys 1- 7-1 (the upper translation motor drives one of the upper pulleys to rotate), the upper belt connecting the upper slider and the two upper pulleys (omitted in the figure); the lower pulley set includes two right-angled Two lower pulleys 1-7-2 on the frame (the lower translation motor drives one of the lower pulleys to rotate), connects the lower slide and the lower belt (omitted among the figures) of the two lower pulleys.

The translation mechanism drives the lifting mechanism to move horizontally; in the lifting mechanism: the upper and lower ends of the lifting guide rail 2-1 and the lead screw 2-2 are respectively fixed with the upper slider and the lower slider (the lifting guide rail and the lead screw are parallel to each other) Arrangement), so as to be vertically positioned between the upper guide rail and the lower guide rail; the lifting motor 2-3 drives the screw to rotate, and the lifting slider 2-4 is threadedly matched with the screw and can slide vertically along the lifting guide rail; The lifting motor is arranged on the lower slider by the fixed mount 2-5.

The moving assembly also includes a protective cover for accommodating the translation mechanism; the protective cover is arranged on one side of the blackboard (the left direction in Fig. 1), and in the protective cover: the frame 3-1 is fixed on the wall and vertically Straight extension arrangement, the outer door 3-2 and the inner door 3-3 are respectively positioned at the left and right sides of the protective cover; when the mobile assembly breaks down, the outer door 3-3 can be opened to maintain the mobile assembly.

3. The present invention can also include a dust suction assembly for collecting dust, as shown in Figure 4 and Figure 5; in the dust suction assembly, the fan 7-1 (the speed of the inner wiper and the fan is the same) is rotatably positioned Between the bracket and the internal wiper and driven by the outer shaft, the rear cover 7-2 is set on the bracket and positioned between the bracket and the fan (ventilation slots 7-6 are also made on the rear cover), and the outer cover 7-3 is arranged On the circumferential surface of the back cover and wrapping the outer wiper and the fan, the filter screen (omitted in the figure) is arranged on the back cover; in addition, an opening 7-4 is made at the bottom of the outer cover, and the collection bottle 7-5 is fixed on the lower part of the outer cover And the position of the bottle mouth is docked with the opening; when the fan rotates, negative pressure is generated to suck away the dust generated when wiping the blackboard, and the filter screen can filter and block the dust, so that the dust falls into the collection bottle through the opening.

Claims (8)

1. A fully automatic dust-free blackboard eraser, including an eraser assembly capable of removing traces of chalk and a moving assembly that drives the eraser assembly to move along the plane of the blackboard; it is characterized in that: The head rubbing assembly includes a bracket (4-9), an inner scrubbing disc (4-1) and an outer scrubbing disc (4-2) arranged on the same axis and rotatably positioned on the bracket, and the inner scrubbing disc (4-2) is driven by a gear set. The motor (4-10) that the wiper and the outer wiper rotate in opposite directions and the push rod used to push the bracket to move horizontally; The moving assembly includes an elevating mechanism that can drive the wiping head assembly to move vertically and a translation mechanism that can drive the elevating mechanism to move horizontally. 2. The fully automatic dust-free blackboard eraser according to claim 1, characterized in that: the translation mechanism includes an upper guide rail (1-1) and a lower guide rail (1-2) respectively horizontally fixed above and below the blackboard, An upper slider (1-3) and a lower slider (1-4) that can move along the upper guide rail and the lower guide rail respectively, and a translation motor that drives the upper slider and the lower slider to move through a pulley set. 3. The fully automatic dust-free blackboard eraser according to claim 2, characterized in that: the lifting mechanism includes a lifting guide rail (2-1) and a lead screw ( 2-2), the lifting motor (2-3) that drives the screw to rotate, and the lifting slider (2-4) that is threadedly matched with the screw and can slide vertically along the lifting guide rail. 4. The fully automatic dust-free blackboard eraser according to claim 3, characterized in that: the inner and outer wipers are rotatably positioned on the bracket through a concentric shaft; The inner shaft (4-3) that the disk rotates, and the outer shaft (4-4) that is coaxially sleeved outside the inner shaft and used to drive the rotation of the outer wiping disk. 5. The fully automatic dust-free blackboard eraser according to claim 4, characterized in that: the push rod includes a sleeve rod (6-1), a telescopic rod (6-2) slidably positioned in the sleeve rod, and The power part is used to drive the movement of the telescopic rod; the push rod is horizontally fixed on the lifting slider and the top of the telescopic rod is fixed to the bracket. 6. The fully automatic dust-free blackboard eraser according to claim 5, characterized in that: the inner eraser includes an inner chassis and an inner eraser fixed on the inner chassis, and the outer eraser includes an outer chassis and an outer eraser fixed on the outer chassis. Outer rubbing head on the chassis. 7. The fully automatic dust-free blackboard eraser according to claim 6, characterized in that: the fully automatic dust-free blackboard eraser further comprises a dust suction assembly for collecting dust. 8. The fully automatic dust-free blackboard eraser according to claim 7, characterized in that: the dust suction assembly includes a fan (7-1) rotatably positioned between the bracket and the inner eraser and driven by the outer shaft , the rear cover (7-2) fixed on the bracket and located between the bracket and the fan, the ventilation slot (7-6) made on the rear cover, arranged on the circumferential surface of the rear cover and wrapping the outer wiper and the fan The outer cover (7-3), the filter screen arranged on the back cover, the opening (7-4) arranged at the bottom of the outer cover, the collection bottle (7-5) fixed on the lower part of the outer cover and the position of the bottle mouth docking with the opening.