CN212353381U - Simple and easy clear double-deck blackboard - Google Patents

Abstract

The utility model discloses a simple and easy clear double-deck blackboard, comprising a main body, two slides have all been seted up to the both sides inner wall of main part, the main part is equipped with first plate body and second plate body between the inner wall of both sides, the both sides top and the bottom of first plate body and second plate body all rotate and are connected with the runner, the runner is in main part sliding connection at two slides respectively, the fixed box of top fixedly connected with of main part, two fixed plates of the equal fixedly connected with of top both sides inner wall of fixed box rotate between two fixed plates and are connected with the fixed pulley, the equal fixedly connected with connecting block in top both sides of first plate body and second plate body are connected with the rigidity line between the connecting block. Compared with the prior art, the utility model discloses a set up first sponge piece, second sponge piece, reciprocal lead screw, second dwang, pivot and ash storage box, made this blackboard can clear away the chalk word on two blackboards better, practiced thrift the plenty of time, and can reduce the descending of chalk dust.

Description

Simple and easy clear double-deck blackboard

Technical Field

The utility model relates to a teaching technical field especially relates to a simple and easy clear double-deck blackboard.

Background

Because the student of classroom teaching is many in the university, double-deck tensile blackboard is very common at school, however because double-deck blackboard needs push-and-pull earlier, go to clean the blackboard again, again because the blackboard area is great, it is more troublesome to clean the blackboard, lead to the teacher to use at class and can waste a large amount of time when needing to clean the blackboard, and have the dust whereabouts when cleaning the blackboard, can lead to the dust to fly upward when falling from the eminence, it has become the thing that everybody had all been reluctant to do to clean the blackboard next class, we have proposed a simple and easy clear double-deck blackboard for this.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects of the prior double-layer blackboard that the cleaning is troublesome, the time is wasted and the dust falls down, and providing a simple and easy-to-clean double-layer blackboard.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a simple and easy clean double-layer blackboard comprises a main body, wherein two slide ways are respectively arranged on the inner walls of two sides of the main body, a first plate body and a second plate body are arranged between the inner walls of two sides of the main body, the top ends and the bottom ends of two sides of the first plate body and the second plate body are respectively and rotatably connected with a rotating wheel, the rotating wheels are respectively in sliding connection with the main body at the two slide ways, the top end of the main body is fixedly connected with a fixing box, the inner walls of two sides of the top end of the fixing box are respectively and fixedly connected with two fixing plates, a fixed pulley is rotatably connected between the two fixing plates, connecting blocks are respectively and fixedly connected with two sides of the top ends of the first plate body and the second plate body, a rigid wire is connected between the connecting blocks and is wound outside the fixed pulley, a through hole is arranged on the top end of the main body, the outside cover of reciprocal lead screw is equipped with the sliding sleeve, the equal fixedly connected with dead lever in top and the bottom of sliding sleeve, the dead lever is L shape.

Furthermore, through-holes have been seted up to one side top and the bottom of first plate body, the horizontal pole of dead lever extends to the outside of first plate body in through-hole department, fixedly connected with first sponge piece between the horizontal pole of dead lever.

Further, one side of first plate body is seted up flutedly, the through-hole has been seted up to one side inner wall of recess, first plate body is equipped with the third dwang in through-hole department, the third dwang extends to the inside of first plate body in through-hole department, the through-hole has been seted up to one side of reciprocal lead screw, reciprocal lead screw is equipped with the tooth's socket at the through-hole inner wall, the third dwang is in through-hole department and reciprocal lead screw sliding connection, the one end fixedly connected with connecting rod of third dwang, one side of connecting rod is rotated and is connected with first handle, the bottom of second plate body is seted up flutedly.

Furthermore, a second handle is arranged at the groove of the second plate body, and a torsion spring is arranged between the second handle and the second plate body.

Further, the equal fixedly connected with fixed block in both ends of one side of main part, the outside fixedly connected with slide rail of fixed block, two rotate between the fixed block and be connected with the second dwang, two the through-hole has all been seted up at the middle part of fixed block, the second dwang extends to one side of fixed block at the through-hole department.

Further, the first dwang of the equal fixedly connected with in both ends of second dwang, the one end of first dwang is all rotated and is connected with the slider, the inner wall sliding connection of slider and slide rail, equal fixedly connected with spring between one side of first dwang and the main part, the outside cover of second dwang is equipped with the second sponge piece, one side fixedly connected with pivot of second sponge piece, the outside fixedly connected with ash storage box of pivot.

The utility model has the advantages that:

1. the first sponge block, the second sponge block, the reciprocating screw rod and the second rotating rod are arranged, so that chalk characters on the double-layer blackboard can be better and more easily erased, and the time is saved and the blackboard is easily erased in class;

2. through having set up pivot and ash storage box, the chalk dust that makes when wiping the blackboard falls into the ash storage box, can not lead to a large amount of ashes to fly upward in the air, causes the influence to health.

Compared with the prior art, the utility model discloses a set up first sponge piece, second sponge piece, reciprocal lead screw, second dwang, pivot and ash storage box, made this blackboard can clear away the chalk word on two blackboards better, practiced thrift the plenty of time, and can reduce the descending of chalk dust.

Drawings

Fig. 1 is a schematic view of a simple and easy-to-clean double-layer blackboard according to the present invention;

fig. 2 is a left side view structural diagram of a simple and easy-to-clean double-layer blackboard provided by the present invention;

fig. 3 is an enlarged structural diagram of a portion a of the simple and clean double-layer blackboard according to the present invention.

In the figure: the dust collecting plate comprises a main body 1, a first plate body 2, a rotating wheel 3, a second plate body 4, a fixing box 5, a fixing plate 6, a fixed pulley 7, a first sponge block 8, a fixing block 9, a sliding rail 10, a first rotating rod 11, a spring 12, a sliding block 13, a second rotating rod 14, a second sponge block 15, a rotating shaft 16, an ash storage box 17, a reciprocating screw rod 18, a sliding sleeve 19 and a third rotating rod 20.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a simple and easy-to-clean double-layer blackboard comprises a main body 1, two slide ways are respectively arranged on the inner walls of two sides of the main body 1, a first board body 2 and a second board body 4 are arranged between the inner walls of two sides of the main body 1, the top ends and the bottom ends of two sides of the first board body 2 and the second board body 4 are respectively and rotatably connected with a rotating wheel 3, the rotating wheels 3 are respectively and slidably connected with the main body 1 at the two slide ways, a fixed box 5 is fixedly connected with the top end of the main body 1, two fixed plates 6 are respectively and fixedly connected with the inner walls of two sides of the top end of the fixed box 5, a fixed pulley 7 is rotatably connected between the two fixed plates 6, connecting blocks are respectively and fixedly connected with two sides of the top ends of the first board body 2 and the second board body 4, a rigid wire is connected between the connecting blocks, the rigid wire is wound, a sliding sleeve 19 is sleeved outside the reciprocating screw rod 18, fixed rods are fixedly connected to the top end and the bottom end of the sliding sleeve 19, the fixed rods are L-shaped, through holes are formed in the top end and the bottom end of one side of the first plate body 2, a cross rod of each fixed rod extends to the outside of the first plate body 2 at the through hole, a first sponge block 8 is fixedly connected between the cross rods of the fixed rods, a groove is formed in one side of the first plate body 2, a through hole is formed in the inner wall of one side of the groove, a third rotating rod 20 is arranged at the through hole of the first plate body 2, the third rotating rod 20 extends to the inside of the first plate body 2 at the through hole, a through hole is formed in one side of the reciprocating screw rod 18, a tooth socket is formed in the inner wall of the through hole of the reciprocating screw rod 18, the third rotating rod 20 is slidably connected with the reciprocating screw rod 18 at, the second plate body 4 is equipped with the second handle in the groove, be equipped with torque spring between second handle and the second plate body 4, the equal fixedly connected with fixed block 9 in both ends of one side of main part 1, the outside fixedly connected with slide rail 10 of fixed block 9, it is connected with second dwang 14 to rotate between two fixed blocks 9, the through-hole has all been seted up at the middle part of two fixed blocks 9, second dwang 14 extends to one side of fixed block 9 at the through-hole department, the equal fixedly connected with first dwang 11 in both ends of second dwang 14, the one end of first dwang 11 all rotates and is connected with slider 13, the inner wall sliding connection of slider 13 and slide rail 10, equal fixedly connected with spring 12 between one side of first dwang 11 and main part 1, the outside cover of second dwang 14 is equipped with second sponge piece 15, one side fixedly connected with pivot 16 of second sponge piece 15, the outside fixedly connected with ash storage box.

The working principle is as follows: when the blackboard is used, when the first board body 2 is not fully written, the second board body 4 can be pulled down by the handle at the bottom end of the second board body 4, the second board body 4 is pulled down to pull the rigid line, the rigid line bypasses the fixed pulley 7 to pull the first board body 2, the first board body 2 is pulled to the upper part, thereby writing on the second board body 4, when the second board body 4 finishes writing and needs to erase the blackboard, the second sponge block 15 can be rotated to be clung to the second board body 4, the spring 12 pulls the first rotating rod 11 to be prevented from loosening, the dust storage box 17 is clung to the second board body 4 by the torsion spring, when the second board body 4 is pushed upwards, the chalk characters on the second board body 4 are erased by rubbing with the second sponge block 15, the chalk dust falls into the dust storage box 17, when the second board body 4 rises, the first rotating rod 2 descends due to gravity, when the first board body 2 descends to the bottom end, the third board body 20 is pulled out from the first board body 2, the handle is rotated, the handle drives the connecting rod to rotate, the connecting rod drives the reciprocating screw rod 18 to rotate, the reciprocating screw rod 18 rotates to drive the sliding sleeve 19 to slide, the sliding sleeve 19 drives the fixed rod to slide, and the fixed rod drives the first sponge block 8 to slide back and forth, so that chalk characters of the first plate body 2 are erased.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. The simple and clean double-layer blackboard comprises a main body (1) and is characterized in that two slide ways are respectively arranged on the inner walls of the two sides of the main body (1), the main body (1) is provided with a first board body (2) and a second board body (4) between the inner walls of the two sides, the top ends and the bottom ends of the two sides of the first board body (2) and the second board body (4) are respectively and rotatably connected with a rotating wheel (3), the rotating wheel (3) is respectively and slidably connected with the main body (1) on the two slide ways, the top end of the main body (1) is fixedly connected with a fixed box (5), the inner walls of the two sides of the top end of the fixed box (5) are respectively and fixedly connected with two fixed plates (6), a fixed pulley (7) is rotatably connected between the two fixed plates (6), the two sides of the top ends of the first board body (2) and the second board body, and the rigidity line twines in the outside of fixed pulley (7), the through-hole has been seted up on the top of main part (1), and the rigidity line runs through the through-hole, it is connected with reciprocal lead screw (18) to rotate between the both sides inner wall of first plate body (2), the outside cover of reciprocal lead screw (18) is equipped with sliding sleeve (19), the equal fixedly connected with dead lever in top and the bottom of sliding sleeve (19), the dead lever is L shape.

2. The simple and easy-to-clean double-layer blackboard according to claim 1, wherein the first board body (2) is provided with through holes at the top end and the bottom end of one side, the cross rods of the fixing rod extend to the outside of the first board body (2) at the through holes, and a first sponge block (8) is fixedly connected between the cross rods of the fixing rod.

3. The simple and easy clear double-deck blackboard of claim 1, characterized in that, one side of first plate body (2) is seted up flutedly, the through-hole has been seted up to one side inner wall of recess, first plate body (2) are equipped with third dwang (20) in through-hole department, third dwang (20) extend to the inside of first plate body (2) at the through-hole department, the through-hole has been seted up to one side of reciprocal lead screw (18), reciprocal lead screw (18) are equipped with the tooth's socket at the through-hole inner wall, third dwang (20) are in through-hole department and reciprocal lead screw (18) sliding connection, the one end fixedly connected with connecting rod of third dwang (20), one side of connecting rod is rotated and is connected with first handle, the bottom of second plate body (4) is seted up flutedly.

4. The simple and easy-to-clean double-layer blackboard according to claim 3, wherein the second board body (4) is provided with a second handle at the groove, and a torsion spring is arranged between the second handle and the second board body (4).

5. The simple and easy clear double-deck blackboard of claim 1, characterized in that, the equal fixedly connected with fixed block (9) in both ends of one side of main part (1), the outside fixedly connected with slide rail (10) of fixed block (9), two rotate between fixed block (9) and be connected with second dwang (14), two the through-hole has all been seted up at the middle part of fixed block (9), second dwang (14) extend to one side of fixed block (9) at the through-hole.

6. The simple and easy clear double-deck blackboard of claim 5, characterized in that, the equal fixedly connected with first dwang (11) in both ends of second dwang (14), the one end of first dwang (11) is all rotated and is connected with slider (13), the inner wall sliding connection of slider (13) and slide rail (10), equal fixedly connected with spring (12) between one side of first dwang (11) and main part (1), the outside cover of second dwang (14) is equipped with second sponge piece (15), one side fixedly connected with pivot (16) of second sponge piece (15), the outside fixedly connected with ash storage box (17) of pivot (16).

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