CN219446580U

CN219446580U - Antistatic blackboard eraser

Info

Publication number: CN219446580U
Application number: CN202222741398.7U
Authority: CN
Inventors: 王凯璇; 姚国庆; 翟帅程; 郭昊轩
Original assignee: Hebei University of Engineering
Current assignee: Hebei University of Engineering
Priority date: 2022-10-18
Filing date: 2022-10-18
Publication date: 2023-08-01
Anticipated expiration: 2032-10-18

Abstract

The utility model discloses an antistatic blackboard eraser, which comprises a shell, wherein an antistatic coating is coated on the outer side of the shell, a rough cladding is paved on the side wall of the periphery of the shell, and a scrubbing plate is connected below the shell; further comprises: the bottom of the shell is provided with a groove, the groove is connected with the top of the scrubbing plate, and the top of the inner side of the shell is embedded with a magnetic block; rectangular grooves are symmetrically formed in the side walls of the grooves, locking rods are connected in the rectangular grooves, the end portions of the locking rods are connected in the clamping grooves, and the clamping grooves are symmetrically formed in the outer sides of the tops of the wiping plates. The anti-static blackboard eraser has the advantages that when the anti-static blackboard eraser is used, chalk dust is prevented from being adsorbed on a blackboard due to static electricity, the blackboard eraser is damaged after the service time is long, and the blackboard eraser can be installed and replaced conveniently and rapidly through the locking plate and the clamping groove.

Description

Antistatic blackboard eraser

Technical Field

The utility model relates to the technical field of blackboard eraser, in particular to an antistatic blackboard eraser.

Background

In the teaching process, chalks are one of the common tools and are generally used for writing on a blackboard, in order to erase the trace of chalks on the blackboard, a blackboard eraser is often used, a large amount of dust can be generated in the using process of the blackboard eraser, and in order to reduce the dispersion of chalk dust, an antistatic coating is generally arranged on the surface layer of the blackboard eraser, however, the following problems still exist in the use process of the existing blackboard eraser:

in the blackboard eraser with the dust collecting structure disclosed in the publication No. CN214492306U, the front end surface of the metal cover plate is tightly attached to the rear end surface of the anti-skid particles, and a detachable structure is formed between the fixing nut and the metal cover plate; through the structural relation between metal apron and the anti-slip particles, make the user when the chalk dust on the blackboard is erased to the control blackboard eraser through metal apron, anti-slip particles can increase the friction between user's hand and the metal apron, prevent that the metal apron from dropping from the user's hand, through the structural relation between fixation nut and the metal apron, make the user dismantle the metal apron through the mode of dismantling fixation nut, the person of facilitating the use maintains the blackboard eraser inside, but, this scheme is in the messenger process, connect through fixation nut between blackboard eraser and the metal apron, need one by one revolve when the installation is dismantled and twist, comparatively loaded down with trivial details time consuming, and then be inconvenient for carrying out convenient installation change to the blackboard eraser.

We have therefore proposed an antistatic blackboard eraser in order to solve the problems set forth above.

Disclosure of Invention

The utility model aims to provide an anti-static blackboard eraser, which aims to solve the problems that the existing anti-static blackboard eraser in the market provided by the background technology is connected with a metal cover plate through a fixing nut, and the blackboard eraser is required to be screwed one by one during installation and disassembly, is complicated and time-consuming, and is inconvenient to install and replace.

In order to achieve the above purpose, the present utility model provides the following technical solutions: an antistatic blackboard eraser comprises a shell, wherein an antistatic coating is coated on the outer side of the shell, a rough cladding is paved on the side wall of the periphery of the shell, and a scrubbing plate is connected below the shell;

further comprises:

the bottom of the shell is provided with a groove, the groove is connected with the top of the scrubbing plate, and the top of the inner side of the shell is embedded with a magnetic block;

rectangular grooves are symmetrically formed in the side walls of the grooves, locking rods are connected in the rectangular grooves, the end portions of the locking rods are connected in the clamping grooves, and the clamping grooves are symmetrically formed in the outer sides of the tops of the wiping plates.

Preferably, the shell is in concave-convex fit with the wiping board, the wiping strip is arranged at the bottom of the wiping board, and the poking piece is arranged at the rear side of the shell, so that the shell and the blackboard eraser can be integrated after being mounted, and the poking piece is pulled.

Preferably, the front side symmetry of plectrum is installed the pinion rack, and the pinion rack is connected in the spout to the spout link up the symmetry and set up in the rear side of casing, install the spring between pinion rack and the spout moreover, make the plectrum remove the back and will drive the pinion rack and remove from the spout, and then compress the spring.

Preferably, the toothed plate forms an elastic sliding structure through the spring and the sliding groove, the inner embedded bearing of the sliding groove is connected with a gear, the gear is meshed with the toothed plate, and the gear forms a reciprocating rotating structure through the toothed plate, so that the toothed plate can be meshed with the gear after moving, and the gear is driven to rotate.

Preferably, the center of the gear is connected with a screw in a penetrating way, the screw is connected in the rectangular groove, the outer side of the screw is connected with a locking rod in a threaded way, the locking rod forms a telescopic sliding structure between the screw and the rectangular groove, meanwhile, the locking rod and the rectangular groove are attached to slide, the gear can drive the screw to rotate after rotating, and the screw can drive the locking rod to slide in the rectangular groove.

Preferably, the locking rod corresponds to the clamping groove in position, and the shell forms a connecting and fixing structure with the wiping board through the locking rod and the clamping groove, so that the shell and the wiping board are connected and fixed after the locking rod is connected with the clamping groove.

Compared with the prior art, the utility model has the beneficial effects that:

1. the anti-static blackboard eraser has the advantages that when the anti-static coating arranged on the surface of the shell is used, chalk dust is prevented from being adsorbed on a blackboard due to static electricity, when the blackboard eraser is disassembled and replaced, the poking plate is pulled, the spring is in a compressed state, the poking plate drives the toothed plate to move in the sliding groove, the toothed plate moves to drive the gear to mesh, the gear is driven to rotate, the screw is driven to rotate after the gear rotates, the locking rod is driven to retract into the rectangular groove and is separated from the clamping groove, the erasing plate can be replaced after the locking rod is rotated, the erasing plate is inserted into the groove when the blackboard eraser is installed, the poking plate is loosened, the spring drives the toothed plate to reset, the gear is driven to rotate, and the locking rod stretches out to be in butt joint with the clamping groove, so that the installation work is completed;

2. this prevent static blackboard eraser, plectrum and pinion rack's motion state is unanimous, and then can adjust the locking lever of both sides in step, convenient and fast, and the magnetic path can make the blackboard eraser use after can adsorb on the blackboard to coarse coating can be more stable when taking, prevents to skid.

Drawings

FIG. 1 is a schematic diagram of the overall front cross-section structure of the present utility model;

FIG. 2 is a schematic top view of the whole structure of the present utility model;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2A according to the present utility model;

FIG. 4 is a schematic diagram of the overall front view of the present utility model;

fig. 5 is a schematic top view of the connection between the toothed plate and the pulling piece.

In the figure: 1. a housing; 2. a groove; 3. a rubbing plate; 4. an antistatic coating; 5. a magnetic block; 6. a rough cladding; 7. a chute; 8. a toothed plate; 9. a spring; 10. a pulling piece; 11. a gear; 12. a screw; 13. rectangular grooves; 14. a locking lever; 15. a clamping groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the present utility model provides a technical solution: an antistatic blackboard eraser comprises a shell 1, wherein an antistatic coating 4 is coated on the outer side of the shell 1, a rough cladding 6 is paved on the side wall of the periphery of the shell 1, and a scrubbing plate 3 is connected below the shell 1; further comprises: the bottom of the shell 1 is provided with the groove 2, the groove 2 is connected with the top of the wiping board 3, the magnetic block 5 is embedded in the top of the inner side of the shell 1, the shell 1 and the wiping board 3 are in concave-convex fit, and the bottom of the wiping board 3 is provided with the wiping strip, as shown in fig. 1 and 4, firstly, the blackboard eraser is introduced, mainly comprises the shell 1 and the wiping board 3, the bottom of the shell 1 is provided with the groove 2 for being connected with the wiping board 3, the top of the inner side of the shell 1 is provided with the magnetic block 5, so that the blackboard eraser is convenient to absorb with a blackboard after being used and can prevent the blackboard from falling, the anti-static coating 4 on the shell 1 can prevent chalk dust from being absorbed on the blackboard due to static electricity, and meanwhile, the rough coating 6 can increase the friction force during taking and avoid slipping;

the rear side of the shell 1 is provided with a pulling piece 10, the front side of the pulling piece 10 is symmetrically provided with a toothed plate 8, the toothed plate 8 is connected in a chute 7, the chute 7 is communicated and symmetrically arranged at the rear side of the shell 1, a spring 9 is arranged between the toothed plate 8 and the chute 7, the toothed plate 8 forms an elastic sliding structure through the spring 9 and the chute 7, a gear 11 is connected with an embedded bearing in the chute 7, the gear 11 is meshed with the toothed plate 8, the gear 11 forms a reciprocating rotation structure through the toothed plate 8, and as shown in fig. 1-2 and 5, when the blackboard eraser is easy to be damaged after being used for a long time, the pulling piece 10 at the rear side of the shell 1 is pulled, the toothed plate 8 is driven to synchronously move in the chute 7, the spring 9 is compressed, and the toothed plate 8 is driven to rotate after being moved;

rectangular grooves 13 are symmetrically formed in the side walls of the grooves 2, locking rods 14 are connected in the rectangular grooves 13, the end parts of the locking rods 14 are connected in clamping grooves 15, the clamping grooves 15 are symmetrically formed in the outer sides of the tops of the rubbing boards 3, screw rods 12 are connected in a penetrating mode at the centers of the gears 11, the screw rods 12 are connected in the rectangular grooves 13, the locking rods 14 are connected with the outer side of the screw rods 12 in a threaded mode, the locking rods 14 form a telescopic sliding structure through the screw rods 12 and the rectangular grooves 13, meanwhile, the locking rods 14 and the rectangular grooves 13 are in fit sliding, the positions of the locking rods 14 correspond to the positions of the clamping grooves 15, the shell 1 and the clamping grooves 15 and the rubbing boards 3 form a connecting and fixing structure through the locking rods 14, as shown in fig. 1-3, the gear 11 rotates to drive the corresponding screw 12 to rotate in the rectangular groove 13, the screw 12 rotates to drive the locking rod 14 to separate from the clamping groove 15 and then retract into the rectangular groove 13, then the scrubbing plate 3 can be separated from the shell 1, further the scrubbing plate 3 is convenient to replace, during installation, the scrubbing plate 3 is inserted into the groove 2, then the pulling piece 10 is loosened, the spring 9 drives the toothed plate 8 to reset in the sliding groove 7, and then the gear 11 is driven to rotate, at the moment, the locking rod 14 extends out of the rectangular groove 13 to be clamped with the clamping groove 15 on the outer side of the scrubbing plate 3, and further the replaced scrubbing plate 3 is fixed.

Working principle: when the anti-static blackboard eraser is used, as shown in fig. 1-5, firstly, the shell 1 and the erasing plate 3 form a main body, the bottom of the shell 1 is provided with the groove 2 used for being connected with the erasing plate 3, the magnetic block 5 is convenient for absorbing and preventing falling between the erasing plate 3 and a blackboard, the anti-static coating 4 can prevent chalk dust from being absorbed on the blackboard due to static electricity when the blackboard is erased, the rough coating 6 can increase friction force when the blackboard is taken to avoid slipping, when the blackboard eraser is easy to be damaged after the service time is long, the erasing plate 10 is pulled, the erasing plate 10 drives the toothed plate 8 to move in the chute 7, the spring 9 is compressed, the toothed plate 8 is driven to rotate after moving, the toothed plate 11 drives the screw 12 to rotate, the screw 12 drives the locking rod 14 to be separated from the clamping groove 15, then the erasing plate 3 can be replaced with the shell 1, the erasing plate 3 is inserted into the groove 2 at the moment, then the erasing plate 10 is loosened, the spring 9 drives the toothed plate 8 to reset in the chute 7, then drives the toothed plate 11 to rotate, and the locking rod 14 is driven to stretch out of the rectangular groove 13 to be replaced, and then the rectangular groove 3 is fixed after the erasing plate is used for replacing the plate 3.

What is not described in detail in this specification is prior art known to those skilled in the art.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. An antistatic blackboard eraser comprises a shell (1) which is arranged, wherein an antistatic coating (4) is coated on the outer side of the shell (1), a rough cladding (6) is paved on the peripheral side wall of the shell (1), and a scrubbing plate (3) is connected below the shell (1);

the method is characterized in that: further comprises:

a groove (2) is formed in the bottom of the shell (1), the groove (2) is connected with the top of the scrubbing plate (3), and a magnetic block (5) is embedded in the top of the inner side of the shell (1);

rectangular grooves (13) are symmetrically formed in the side walls of the grooves (2), locking rods (14) are connected in the rectangular grooves (13), the end portions of the locking rods (14) are connected in clamping grooves (15), and the clamping grooves (15) are symmetrically formed in the outer sides of the tops of the wiping plates (3).

2. An antistatic blackboard eraser according to claim 1, characterized in that: the shell (1) is in concave-convex fit with the wiping board (3), the wiping strip is arranged at the bottom of the wiping board (3), and the poking piece (10) is arranged at the rear side of the shell (1).

3. An antistatic blackboard eraser according to claim 2, characterized in that: the front side of plectrum (10) symmetry is installed pinion rack (8), and pinion rack (8) are connected in spout (7) to spout (7) run through the symmetry and open the rear side that is arranged in casing (1), install spring (9) between pinion rack (8) and spout (7) moreover.

4. An antistatic blackboard eraser according to claim 3, characterized in that: the toothed plate (8) forms an elastic sliding structure between the spring (9) and the sliding groove (7), a gear (11) is connected with an embedded bearing in the sliding groove (7), the gear (11) is meshed with the toothed plate (8), and the gear (11) forms a reciprocating rotating structure through the toothed plate (8).

5. An antistatic blackboard eraser according to claim 4, characterized in that: the center of the gear (11) is connected with a screw rod (12) in a penetrating mode, the screw rod (12) is connected into the rectangular groove (13), the outer side of the screw rod (12) is connected with a locking rod (14) in a threaded mode, the locking rod (14) forms a telescopic sliding structure between the screw rod (12) and the rectangular groove (13), and meanwhile the locking rod (14) and the rectangular groove (13) are attached and slide.

6. An antistatic blackboard eraser according to claim 1, characterized in that: the locking rod (14) corresponds to the clamping groove (15), and the shell (1) and the clamping groove (15) and the wiping board (3) form a connecting and fixing structure through the locking rod (14).