CN212098189U - A dust-proof blackboard brush for teaching - Google Patents

Abstract

The utility model belongs to the technical field of teaching appliances, in particular to a dust-proof blackboard brush for teaching, which comprises an installation casing, a water storage device is installed at the top of the installation casing, a brush body is fixedly connected to the lower end of the water storage device, and the brush body and the installation casing are detachable connection, the brush body includes an outer frame body, on which a first sponge brush roll, a second sponge brush roll and a brush block are installed, the brush block is located between the first sponge brush roll and the second sponge brush roll, and the water storage device It includes a water tank, the water tank is penetrated at the top of the shell, the bottom end of the water tank is provided with a first conical hole at the corresponding position of the first sponge brush roller and the second sponge brush roller, and the cover plate is provided with a second conical hole at the corresponding position of the first conical hole. Conical hole, the first conical hole is provided with a first conical blocking block, the second conical hole is provided with a second conical blocking block, a traction frame is slidably installed outside the water tank, and the traction frame is connected to the second cone. The fixed connection of the shaped blocking block is used to solve the problem of flying a large amount of chalk dust when wiping the blackboard.

Description

A dust-proof blackboard brush for teaching

technical field

The utility model belongs to the technical field of teaching appliances, in particular to a dust-proof blackboard brush for teaching.

Background technique

Chalk eraser is a teaching tool often used in teaching, used to erase chalk words on the blackboard. When the chalk eraser moves left and right to wipe the chalk words on the blackboard, the chalk dust is mostly concentrated on both sides of the brush block. Since the two sides of the brush block are not covered, the chalk dust will fly in the air, and at the same time, the chalk dust will accumulate on the surface of the brush block. When too much needs to be cleaned up, more direct slapping will cause most of the chalk dust to diffuse into the air. Chalk dust mixed in the air pollutes the environment and seriously affects the health of teachers and students.

Utility model content

Based on the problems mentioned in the above background technology, the present invention provides a dust-proof blackboard brush for teaching, which is used to solve the problem of flying a large amount of chalk dust when wiping the blackboard.

The technical scheme adopted by the utility model is as follows:

A dust-proof blackboard brush for teaching comprises an installation casing, a water storage device is installed at the top of the installation casing, a brush body is fixedly connected to the lower end of the water storage device, the brush body is detachably connected to the installation casing, and the brush body is detachably connected to the installation casing. The body includes an outer frame body on which a first sponge brush roll, a second sponge brush roll and a brush block are installed, the brush block is located between the first sponge brush roll and the second sponge brush roll, the A limit groove is set on the installation shell, the water storage device includes a water tank, a water inlet is set on the water tank, the water tank is penetrated at the top of the shell, and a connection groove corresponding to the position of the limit groove is set on the water tank, A clamping block is slidably installed in the connecting groove, a first spring is fixedly connected to the groove bottom of the connecting groove, a cover plate is installed on the top of the water tank, and the bottom end of the water tank is connected to the first sponge brush roller, the second The corresponding positions of the two sponge brush rollers are provided with first conical holes, the cover plate is provided with second conical holes corresponding to the first conical holes, and the first conical holes are provided with first conical seals. A blocking block, a second conical blocking block is arranged in the second conical hole, a connecting rod is fixedly installed between the first conical blocking block and the second conical blocking block, and a connecting rod is installed in the water tank. A limit plate is installed, the limit plate is provided with a through hole at the corresponding position of the connecting rod, a limit ring is fixedly installed on the connecting rod, and a second spring is sleeved on the connecting rod, and the second spring is located at the limit. Between the position ring and the limit plate, when the second spring is in a free state, the first conical blocking block is close to the first conical hole, and a traction frame is slidably installed on the outside of the water tank. The conical blocking block is fixedly connected.

The utility model has also made the following improvements on the basis of the above-mentioned technical solutions:

Further, the traction frame has a U-shaped structure, the outer walls on both sides of the water tank are integrally formed with a first sleeve, the traction frame is penetrated in the first sleeve, and the outer walls on both sides of the installation shell are integrated An installation cylinder and a second sleeve are formed, the bottom end of the installation cylinder is closed, a drive rod is passed through the second sleeve, the bottom end of the drive rod is passed through the installation cylinder, and the bottom of the drive rod is inserted into the installation cylinder. A third spring is fixedly installed at the end, the third spring is located in the installation cylinder, and the two ends of the traction frame are respectively corresponding to the two driving rods.

Further, the driving rod is provided with an anti-skid pattern.

Further, the mounting shell is provided with slide rails, and the two outer frame bodies are provided with slide grooves corresponding to the slide rails, and the slide rails are clamped in the slide grooves.

Further, two oppositely arranged scrapers are fixedly installed on the outer frame, and the two scrapers are respectively tangent to the circumferential surfaces of the first sponge brush roll and the second sponge brush roll.

Further, a storage box is installed at the bottom end of the installation shell, a card slot is opened on the storage box, the bottom end of the installation shell is sleeved on the card slot, and a magnetic ring is installed at the bottom end of the installation shell, so The storage box is magnetically connected with the magnetic ring.

The beneficial effects of the present utility model:

1. There are a first sponge brush roller and a second sponge brush roller on both sides of the brush block. During the process of wiping the blackboard by moving left and right, the first sponge brush roller and the second sponge brush roller are not easy to cause chalk dust to fly and accumulate on the brush. The chalk dust on both sides of the block can be well prevented from scattering dust under the blocking of the first sponge brush roller and the second sponge brush roller;

2. By pulling the traction frame, the connecting rod can be driven to rise. When the connecting rod rises, it drives the first conical blocking block and the second conical blocking block to rise, so that the first conical hole and the second conical hole are opened, and the second conical hole is opened. After the shaped hole is opened, the air pressure in the water tank can be balanced, so that the water body in the water tank flows out from the first conical hole, so that the first sponge brush roller and the second sponge brush roller are wetted, and the chalk dust can be better avoided when wiping the blackboard;

3. The driving rod is designed so that when holding the blackboard brush, push the driving rod with fingers to lift the traction frame to open the first conical hole and the second conical hole, which can be operated with one hand and is easy to use.

Description of drawings

The present invention may be further illustrated by the non-limiting examples given in the accompanying drawings;

Fig. 1 is the structural representation of a kind of dust-proof blackboard brush for teaching in the embodiment of the utility model;

FIG. 2 is a schematic structural diagram of an installation casing and a storage box in an embodiment of the present invention;

FIG. 3 is a schematic diagram of a longitudinal section of an installation casing in an embodiment of the present utility model;

Fig. 4 is the enlarged structure schematic diagram of A place in Fig. 3;

Fig. 5 is the structural schematic diagram after removing the installation shell in the embodiment of the present utility model;

FIG. 6 is a schematic diagram 1 of a longitudinal section structure after removing the installation casing in the embodiment of the present utility model;

Fig. 7 is the enlarged schematic diagram of the B place in Fig. 6;

FIG. 8 is a second schematic view of the longitudinal section of the present invention after removing the installation casing;

Fig. 9 is the enlarged structure schematic diagram of C place in Fig. 8;

10 is a schematic cross-sectional structural diagram of the embodiment of the present utility model after removing the installation shell;

The main component symbols are explained as follows:

Installation shell 11, installation cylinder 12, second sleeve 13, limit groove 14, slide rail 15, drive rod 16, anti-skid pattern 17, third spring 18, water storage device 2, water tank 21, limit plate 211, Hole 2111, first sleeve 22, traction frame 23, clamping block 24, connecting rod 25, first conical blocking block 251, second conical blocking block 252, limit ring 253, second spring 254, storage Box 3 , card slot 31 , brush body 4 , outer frame body 41 , chute 411 , first sponge brush roll 42 , second sponge brush roll 43 , brush block 45 , water inlet 5 .

Detailed ways

In order to enable those skilled in the art to better understand the present invention, the technical solutions of the present invention are further described below with reference to the accompanying drawings and embodiments.

Example

As shown in Figures 1 to 10, a dust-proof blackboard brush for teaching includes an installation casing 11, a water storage device 2 is installed at the top of the installation casing 11, and a brush body 4 is fixedly connected to the lower end of the water storage device 2. The brush body 4 is connected to the installation casing 11. The shell 11 is detachably connected, and the brush body 4 includes an outer frame body 41 on which the first sponge brush roller 42, the second sponge brush roller 43 and the brush block 45 are installed. The two sponge brush rollers 43 roll and wipe, and then thoroughly wipe with the brush block 45. During the process of wiping the blackboard by moving left and right, the first sponge brush roller 42 and the second sponge brush roller 43 are not easy to cause chalk dust to fly, and accumulate on the blackboard at the same time. The chalk dust on both sides of the brush block 45 can be well prevented from scattering under the blocking of the first sponge brush roller 42 and the second sponge brush roller 43. The brush block 45 is located between the first sponge brush roller 42 and the second sponge brush roller 43. During the time, the installation casing 11 is provided with a limit slot 14, the water storage device 2 includes a water tank 21, the water tank 21 is provided with a water inlet 5, the water tank 21 is penetrated at the top of the shell 1, and the water tank 21 is opened with a position corresponding to the limit slot 14. The connection groove 212 is slidably installed in the connection groove 212, and the clamping block 24 is fixedly connected with the bottom of the connection groove 212 with a first spring 241. The brush roller 42 and the second sponge brush roller 43 are provided with first conical holes 213 at corresponding positions. The cover plate is provided with a second conical hole 214 in the corresponding position of the first conical hole 213. There is a first conical blocking block 251, a second conical blocking block 252 is arranged in the second conical hole 214, and a Connecting rod 25, a limiting plate 211 is installed in the water tank 21, the limiting plate 211 is provided with a through hole 2111 at the corresponding position of the connecting rod 25, a limiting ring 253 is fixedly installed on the connecting rod 25, and a second spring is sleeved on the connecting rod 25 254. The second spring 254 is located between the limit ring 253 and the limit plate 211. When the second spring 254 is in a free state, the first conical blocking block 251 is in close contact with the first conical hole 213. The outside of the water tank 21 is slidably installed with The traction frame 23 is fixedly connected with the second conical blocking block 252. After the first conical hole 213 and the second conical hole 214 are opened, the second conical hole 214 can be opened to balance the air pressure in the water tank 21. The water in the water tank 21 flows out from the first conical hole 213 to moisten the first sponge brush roller 42 and the second sponge brush roller 43, which can better prevent chalk dust from rising when wiping the blackboard.

Specifically, the traction frame 23 has a U-shaped structure, the outer walls on both sides of the water tank 21 are integrally formed with a first sleeve 22 , the traction frame 23 passes through the first sleeve 22 , and the outer walls on both sides of the mounting shell 11 are integrally formed There are an installation cylinder 12 and a second sleeve 13, the bottom end of the installation cylinder 12 is closed, the second sleeve 13 is provided with a driving rod 16, the bottom end of the driving rod 16 is penetrated in the installation cylinder 12, and the bottom end of the driving rod 16 The third spring 18 is fixedly installed. The third spring 18 is located in the installation cylinder 12. The two ends of the traction frame 23 correspond to the two driving rods 16 respectively. When the blackboard brush is held, the driving rod 16 can be pushed up by fingers Lifting the traction frame 23 makes the first conical hole 213 and the second conical hole 214 open, which can be operated with one hand and is easy to use. Anti-skid pattern 17.

Specifically, the mounting housing 11 is provided with the slide rails 15 , the outer frame body 41 is provided with two slide grooves 411 corresponding to the slide rails 15 , the slide rails 15 are clamped in the slide grooves 411 , and the outer frame body 11 and the mounting housing are 11 is slidingly connected, the brush body 4 can be directly driven to slide out when the water tank 21 is disassembled, and the disassembly is convenient.

Specifically, the outer frame body 41 is fixedly mounted with two oppositely arranged scrapers 44 , and the two scrapers 44 are respectively tangent to the circumferential surfaces of the first sponge brush roll 42 and the second sponge brush roll 43 . Clean up the lumpy debris formed by the water-soaked chalk dust attached to the first sponge brush roll 42 and the second sponge brush roll 43 to avoid the debris from adhering to the first sponge brush roll 42 and the second sponge brush roll 43 Affects the wiping effect.

Specifically, a storage box 3 is installed at the bottom end of the installation casing 11, a card slot 31 is formed on the storage box 3, the bottom end of the installation casing 11 is sleeved on the card slot 31, a magnetic ring is installed at the bottom end of the installation casing, and the storage box 3 Magnetic connection with the magnetic ring. The lumpy chalk dust that has been cleaned and dropped by the scraper scraper 44 can be collected by the storage box 3 .

When in use, first open the water inlet 5 to inject cleaning water into the water tank 21, and then close the water inlet 5 and insert the water tank 21 into the top of the installation housing 11. When the position of the block 24 and the position of the limit groove 14 are in the first Under the action of the spring 241, the blocking block 24 pops out and snaps into the limiting groove 14 to lock the water tank 21, and then hold the mounting shell 11 and push the driving rod 16 with fingers to lift up the traction frame 23, and the traction frame 23 rises to drive the connection When the rod 25 rises, when the connecting rod 25 rises, it drives the first conical blocking block 251 and the second conical blocking block 252 to rise, so that the first conical hole 213 and the second conical hole 214 are opened, and the second conical hole 214 After opening, the air pressure in the water tank 21 can be balanced, so that the water in the water tank 21 flows out from the first conical hole 213 to wet the first sponge brush roller 42 and the second sponge brush roller 43, and then release your fingers, under the action of the second spring 254 The connecting rod 25 is driven to return, and the connecting rod 25 drives the first conical blocking block 251 and the second conical blocking block 252 to return to make the first conical hole 213 and the second conical hole 214 closed, preventing the water tank 21 from entering The cleaning water continues to leak, and then hold the blackboard brush to wipe the blackboard.

A kind of dust-proof blackboard brush for teaching provided by the utility model is introduced in detail above. The description of the specific embodiments is only used to help understand the method and the core idea of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of the present utility model, some improvements and modifications can also be made to the present utility model, and these improvements and modifications also fall into the protection of the claims of the present utility model. within the range.

Claims (6)

1. A dust-proof blackboard brush for teaching, comprising an installation casing (11), a water storage device (2) is installed at the top of the installation casing (11), and a brush body (2) is fixedly connected to the lower end of the water storage device (2). 4), the brush body (4) is detachably connected to the installation housing (11), and it is characterized in that: the brush body (4) comprises an outer frame body (41), and the outer frame body (41) is mounted with an outer frame body (41). A first sponge brush roll (42), a second sponge brush roll (43) and a brush block (45), the brush block (45) being located between the first sponge brush roll (42) and the second sponge brush roll (43) In between, the installation casing (11) is provided with a limiting groove (14), the water storage device (2) includes a water tank (21), and a water inlet (5) is opened on the water tank (21), and the water tank (21) is provided with a water inlet (5). (21) is passed through the top of the casing (1), the water tank (21) is provided with a connecting groove (212) corresponding to the position of the limiting groove (14), and a clamping block is slidably installed in the connecting groove (212). (24), a first spring (241) is fixedly connected with the locking block (24) and the bottom of the connecting groove (212), a cover plate is installed at the top of the water tank (21), and the bottom end of the water tank (21) A first conical hole (213) is provided at the corresponding positions of the first sponge brush roller (42) and the second sponge brush roller (43), and the cover plate is provided with a first conical hole (213) corresponding to the position. Two conical holes (214), a first conical blocking block (251) is arranged in the first conical hole (213), and a second conical sealing block (251) is arranged in the second conical hole (214) A blocking block (252), a connecting rod (25) is fixedly installed between the first conical blocking block (251) and the second conical blocking block (252), and a limited position is installed in the water tank (21) A plate (211), the limit plate (211) is provided with a through hole (2111) at the corresponding position of the connecting rod (25), a limit ring (253) is fixedly installed on the connecting rod (25), and the connecting rod (25) is (25) A second spring (254) is sleeved on the top, the second spring (254) is located between the limit ring (253) and the limit plate (211), and the second spring (254) is in a free state When the first conical blocking block (251) is in close contact with the first conical hole (213), a traction frame (23) is slidably installed on the outside of the water tank (21). The blocking block (252) is fixedly connected. 2. The dust-proof blackboard brush for teaching according to claim 1, characterized in that: the traction frame (23) is in a U-shaped structure, and the outer walls on both sides of the water tank (21) are integrally formed with a first set of A cylinder (22), the traction frame (23) is penetrated in the first sleeve (22), and the outer walls on both sides of the installation shell (11) are integrally formed with an installation cylinder (12) and a second sleeve ( 13), the bottom end of the mounting cylinder (12) is closed, the second sleeve (13) is provided with a driving rod (16), and the bottom end of the driving rod (16) is passed through the mounting cylinder (12). ), a third spring (18) is fixedly installed at the bottom end of the driving rod (16), the third spring (18) is located in the installation cylinder (12), and the two ends of the traction frame (23) are respectively connected with The two drive rods (16) correspond. 3 . The dust-proof blackboard brush for teaching according to claim 2 , wherein the driving rod ( 16 ) is provided with an anti-skid pattern ( 17 ). 4 . 4. A dust-proof blackboard brush for teaching according to claim 3, characterized in that: said mounting shell (11) is provided with slide rails (15), and two openings of said outer frame (41) are provided with A sliding groove (411) corresponding to the sliding rail (15), and the sliding rail (15) is clamped in the sliding groove (411). 5. The dust-proof blackboard brush for teaching according to claim 4, characterized in that: two oppositely arranged scrapers (44) are fixedly installed on the outer frame (41), and the two scrapers (44) are respectively tangent to the circumferential surfaces of the first sponge brush roll (42) and the second sponge brush roll (43). 6 . The dust-proof blackboard brush for teaching according to claim 5 , wherein a storage box ( 3 ) is installed at the bottom end of the mounting shell ( 11 ), and a card is opened on the storage box ( 3 ). 7 . A slot (31), the bottom end of the mounting shell (11) is sleeved on the card slot (31), a magnetic ring is mounted on the bottom end of the mounting shell, and the storage box (3) is magnetically connected with the magnetic ring.

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