CN217804079U - Blackboard capable of preventing dust from flying - Google Patents

Abstract

The utility model relates to a prevent blackboard that dust flies upward, including fixed frame, carriage, pivot, soft blackboard, collection frame, lack gear, carousel, special-shaped rack, blackboard eraser, first spring and conveying roller, the cross-under of fixed frame four-end all rotary type has the pivot, and the conveying roller rigid coupling is between two pivot inner in every side, and soft blackboard is around between two conveying rollers, carriage rigid coupling in fixed frame one side. The utility model discloses people can write on soft blackboard, write full word on soft blackboard, and the word need not when using, can pull the rocker and drive six arris kellies and remove right and break away from with the draw-in groove, pulling rocker corotation drives the carousel corotation through six arris kellies, just also make soft blackboard corotation, and the blackboard eraser reciprocates and erases the word on the soft blackboard, because the effect of carriage and fixed frame, can avoid the chalk dust to fly upward, collect the frame and then collect the chalk dust that drops, so, can avoid the chalk dust to fly upward influence the surrounding environment.

Description

Blackboard capable of preventing dust from flying

Technical Field

The utility model relates to a blackboard especially relates to a prevent blackboard that dust flies upward.

Background

In daily study, part of people can write on the blackboard, so that the following people can clearly see to study or note, when the characters are not needed to be used, the characters need to be erased by using a blackboard eraser, and at present, when people erase the characters on the blackboard, chalk dust can fly everywhere to influence the surrounding environment in the erasing process.

Therefore, it is necessary to design and develop a dust-flying prevention blackboard capable of collecting chalk dust and preventing the chalk dust from flying to affect the surrounding environment.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect that the chalk dust can fly everywhere to influence the surrounding environment in the erasing process when people erase characters on a blackboard, the technical problem to be solved is as follows: the blackboard capable of collecting chalk dust and preventing dust from flying can avoid the chalk dust from flying to affect the surrounding environment.

The technical scheme of the utility model is that: the utility model provides a blackboard that prevents dust from flying upward, is including fixed frame, carriage, pivot, soft blackboard, collection frame, lacks gear, carousel, dysmorphism rack, blackboard eraser, first spring and conveying roller, the cross-under of fixed frame four end all rotary type has the pivot, conveying roller rigid coupling between two pivot inner of every side, soft blackboard is around between two conveying rollers, carriage rigid coupling is in fixed frame one side, carriage and soft blackboard contact cooperation, the carousel rigid coupling is in one of them pivot outer end, lack the fixed suit of gear in one of them pivot outer end, the setting of blackboard eraser is between fixed frame both sides of slidingtype, the connection of first spring symmetry formula in blackboard eraser one side, first spring tail end and fixed frame inside fixed connection, the cross-under of dysmorphism rack slidingtype is close to lacking one side of gear, dysmorphism rack and the gear meshing of lacking, dysmorphism rack one end and blackboard eraser one side fixed connection, collection frame joint is in fixed frame one side and intercommunication.

Preferably, the clamping groove is formed in one side, close to the outer side of the fixing frame of the rotary table, of the rocking rod, the six-edge clamping rods and the second spring are arranged, the number of the clamping grooves is two, the six-edge clamping rods are in sliding type penetrating connection with the eccentric position of the rotary table, one ends of the six-edge clamping rods are located in the clamping groove, the rocking rod is fixedly connected to the end portion, far away from the clamping groove, of the six-edge clamping rods, and the second spring is connected between one end of the rocking rod and one side of the rotary table.

Preferably, the outer side of the rocker is sleeved with a sponge sleeve.

Preferably, the end part of the hexagonal clamping rod, which is far away from the rocker, is arc-shaped, so that the hexagonal clamping rod can be better in contact fit with the clamping groove.

Preferably, two wiping blocks are arranged on one side of the blackboard eraser.

Preferably, a closed space is formed between the soft blackboard and the fixed frame.

The beneficial effects are that:

1. people can write on the soft blackboard, when the soft blackboard is full of characters, and when the characters do not need to be used, the rocker can be pulled to drive the hexagonal clamping rod to move rightwards to be separated from the clamping groove, the rocker is pulled to rotate forwards to drive the turntable to rotate forwards through the hexagonal clamping rod, the soft blackboard rotates forwards, the blackboard eraser is moved upwards and downwards to erase the characters on the soft blackboard, due to the effect of the soft blackboard and the fixed frame, chalk dust can be prevented from flying upwards, the collection frame is used for collecting the dropped chalk dust, and therefore the situation that the surrounding environment is influenced by the flying upwards of the chalk dust can be avoided.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic view of a first partial body structure according to the present invention.

Fig. 3 is a schematic diagram of a second partial body structure according to the present invention.

Fig. 4 is an enlarged schematic view of part a of the present invention.

In the reference symbols: 1-fixed frame, 2-supporting frame, 3-rotating shaft, 4-soft blackboard, 5-collecting frame, 6-missing gear, 7-rotating disc, 8-special-shaped rack, 9-blackboard eraser, 10-first spring, 11-conveying roller, 12-clamping groove, 13-rocker, 14-hexagonal clamping rod and 15-second spring.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

The embodiment is as follows: a blackboard capable of preventing dust from flying.

Referring to fig. 1-4, the blackboard eraser comprises a fixed frame 1, a support frame 2, a rotating shaft 3, a soft blackboard 4, a collecting frame 5, a gear-lacking wheel 6, a rotating disc 7, a special-shaped rack 8, a blackboard eraser 9, a first spring 10 and a conveying roller 11, wherein the rotating shaft 3 is rotatably connected with four ends of the front side of the fixed frame 1 in a penetrating way, the conveying roller 11 is fixedly connected between the inner ends of the upper two rotating shafts 3 and between the inner ends of the lower two rotating shafts 3, the soft blackboard 4 is wound in front of the two conveying rollers 11, a closed space is formed between the soft blackboard 4 and the fixed frame 1, the support frame 2 is fixedly connected between the left side and the right side of the front side of the fixed frame 1, the support frame 2 is in contact fit with the soft blackboard 4, 3 right-hand members of below right side pivot rigid couplings have carousel 7, 3 right side circumference rigid couplings of top right side pivot have scarce gear 6, the slidingtype blackboard eraser 9 that is equipped with between the rear side in the middle part of the left and right sides face in fixed frame 1, the front flank of blackboard eraser 9 is equipped with two and wipes the piece, blackboard eraser 9 and soft blackboard 4 contact cooperation, blackboard eraser 9 bottom left and right sides respectively with fixed frame 1 in be connected with first spring 10 between the inside of the left and right sides, the cross-under of fixed frame 1 top right side slidingtype has special- shaped rack 8, 8 bottom of special-shaped rack and blackboard eraser 9 top right side fixed connection, special-shaped rack 8 with lack gear 6 meshing, fixed frame 1 bottom joint has collection frame 5 and intercommunication.

The clamping device is characterized by further comprising a rocker 13, a hexagonal clamping rod 14 and a second spring 15, two clamping grooves 12 are formed in the lower portion of the outer right side face of the fixing frame 1, the hexagonal clamping rod 14 is connected in a sliding mode in the eccentric position of the rotary table 7 in a penetrating mode, the left end of the hexagonal clamping rod 14 is arc-shaped, the left end of the hexagonal clamping rod 14 is located in the clamping grooves 12, the hexagonal clamping rod 14 is matched with the clamping grooves 12, the right end of the hexagonal clamping rod 14 is fixedly connected with the rocker 13, a sponge sleeve is circumferentially sleeved on the outer side of the rocker 13, the second spring 15 is connected between the left end of the rocker 13 and the right side face of the rotary table 7, and the second spring 15 is wound on the hexagonal clamping rod 14.

Firstly, an operator installs the fixed frame 1 on a wall, people can write on the soft blackboard 4, when the soft blackboard 4 is full of black characters and the written characters need to be erased, the rocker 13 can be pulled to move rightwards, a sponge sleeve is sleeved on the outer side of the rocker 13 in the circumferential direction, people can hold the characters more comfortably, the second spring 15 is stretched, the rocker 13 moves rightwards to drive the hexagonal clamping rod 14 to move rightwards, when the hexagonal clamping rod 14 moves rightwards to be separated from the clamping groove 12, the rocker 13 stops being pulled to move rightwards, the rocker 13 can be pulled to rotate forwards, the rocker 13 rotates forwards to drive the rotary table 7 to rotate forwards, the rotary table 7 rotates forwards to drive the lower right rotary shaft 3 to rotate forwards, the lower right rotary shaft 3 rotates forwards to drive the lower conveying roller 11 to rotate forwards through the lower left rotary shaft 3, the lower conveying roller 11 rotates forwards to drive the soft blackboard 4 to rotate forwards through the upper conveying roller 11, the soft blackboard 4 rotates forwards to drive the characters to rotate forwards to the rear blackboard, and the upper conveying roller 11 also drives the upper right rotating shaft 3 to rotate forwards, the upper right rotating shaft 3 rotates forwards to drive the gear lacking 6 to rotate forwards, the gear lacking 6 rotates forwards to drive the special-shaped rack 8 to move downwards, the special-shaped rack 8 moves downwards to drive the blackboard eraser 9 to move downwards, the first spring 10 is compressed, and further when the gear lacking 6 rotates forwards continuously and is disengaged from the special-shaped rack 8, the blackboard eraser 9 moves upwards to reset and drives the special-shaped rack 8 to move upwards under the action of the first spring 10, and the process is repeated, so that the blackboard eraser 9 can move upwards and downwards to erase characters on the soft blackboard 4, chalk dust generated in the erasing process falls into the collecting frame 5, and the soft blackboard 4 can be prevented from flying due to the closed space formed between the soft blackboard 4 and the fixing frame 1, when the characters on the soft blackboard 4 are erased, the rocker 13 stops being pulled to rotate forwards, the turntable 7 stops rotating forwards and the soft blackboard 4 stops rotating, send card rocker 13, because of the effect of second spring 15, rocker 13 moves left and drives hexagonal kelly 14 and move left and insert in draw-in groove 12, and hexagonal kelly 14 is fixed with carousel 7 with draw-in groove 12 cooperation, because hexagonal kelly 14 left end is arc, can be better with draw-in groove contact cooperation, can take off collection frame 5 from fixed frame 1, pour the chalk dust into the garbage bin again, after the chalk dust is all poured out, will collect frame 5 and block back to fixed frame 1 on.

Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.

Claims (6)

1. A blackboard capable of preventing dust from flying is characterized by comprising a fixed frame (1), a supporting frame (2), rotating shafts (3), a soft blackboard (4), a collecting frame (5), a gear-lacking wheel (6), a rotary disc (7), a special-shaped rack (8), a blackboard eraser (9), a first spring (10) and conveying rollers (11), wherein the rotating shafts (3) are rotatably connected with four ends of the fixed frame (1) in a penetrating manner, the conveying rollers (11) are fixedly connected between the inner ends of the two rotating shafts (3) on each side, the soft blackboard (4) is wound between the two conveying rollers (11), the supporting frame (2) is fixedly connected to one inner side of the fixed frame (1), the supporting frame (2) is in contact fit with the soft blackboard (4), the rotary disc (7) is fixedly connected to the outer end of one of the rotating shaft (3), the gear-lacking wheel (6) is fixedly sleeved on the outer end of one of the rotating shaft (3), the blackboard eraser (9) is slidably arranged between two inner sides of the fixed frame (1), the first spring (10) is symmetrically connected to one side of the special-shaped rack (8), one end of the first spring (10) is fixedly connected with one side of the gear-lacking gear-shaped rack (8) and is connected with one side of the fixed frame (8) which is close to the gear-lacking rack (8), the collecting frame (5) is clamped on one side of the fixing frame (1) and communicated with the fixing frame.

2. The blackboard capable of preventing dust from flying as claimed in claim 1, further comprising a rocker (13), six-edge clamping rods (14) and a second spring (15), wherein the clamping grooves (12) are formed in one side of the outer side of the fixing frame (1) close to the rotating disc (7), the number of the clamping grooves (12) is two, the six-edge clamping rods (14) are slidably connected to the eccentric position of the rotating disc (7) in a penetrating manner, one ends of the six-edge clamping rods (14) are located in the clamping grooves (12), the rocker (13) is fixedly connected to the end portion of the six-edge clamping rods (14) far away from the clamping grooves (12), and the second spring (15) is connected between one end of the rocker (13) and one side of the rotating disc (7).

3. The blackboard for preventing flying of dust according to claim 2, characterized in that the outside of the rocker (13) is sleeved with a sponge sleeve.

4. The blackboard capable of preventing dust from flying as claimed in claim 3, wherein the end of the hexagonal clamping rod (14) far away from the rocker (13) is arc-shaped, and can be better contacted and matched with the clamping groove (12).

5. A blackboard for preventing dust from flying up, according to claim 4, characterized in that two wiping blocks are provided on one side of the blackboard eraser (9).

6. A blackboard for preventing dust from flying up, according to claim 5, characterised in that a closed space is formed between the soft blackboard (4) and the fixed frame (1).

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