CN210454258U

CN210454258U - Novel dustproof blackboard eraser

Info

Publication number: CN210454258U
Application number: CN201920955435.XU
Authority: CN
Inventors: 张光华; 陈波; 葛明蔚; 陈霖桦; 余俊; 孙栩珲; 杨致昀
Original assignee: Wuxi Vocational And Technical Higher School Of Automobile & Engineering (wuxi Traffic Technician College)
Current assignee: Wuxi Vocational And Technical Higher School Of Automobile & Engineering (wuxi Traffic Technician College)
Priority date: 2019-06-24
Filing date: 2019-06-24
Publication date: 2020-05-05
Anticipated expiration: 2029-06-24

Abstract

The utility model discloses a novel dustproof blackboard eraser has solved the problem that the eraser attaches the dust on the eraser in the use is difficult for striking off and collecting, its technical scheme main points are that erase the body part with the eraser and design into the cylinder structure and be equipped with the dust scraping device below erasing the body, the dust of striking off passes through filter equipment and collects the dust storage room, the effect of effectively collecting the blackboard eraser of clearance and wiping blackboard in-process produced dust has been reached, the harm of dust to teacher's student's health has been reduced, the official working teaching environment has been improved.

Description

Novel dustproof blackboard eraser

Technical Field

The utility model relates to an office supplies, more specifically say, it relates to a novel dustproof blackboard eraser.

Background

The blackboard eraser is a teaching office supply and mainly comprises a shell and an erasing body, wherein the shell is used for fixing the erasing body so as to facilitate the erasing body not to fall off in the using process, and the erasing body is generally made of felt. The blackboard eraser is used for erasing a blackboard to eliminate traces left on the blackboard by chalks, and the blackboard is convenient to be reused during teaching.

At present, chinese patent with publication number CN109849563A discloses a dustproof blackboard eraser, which comprises a casing and an erasing body, wherein a dust storage chamber is arranged at the tail part of the inner side of the casing, the dust storage chamber is provided with a closable opening, a plurality of dust scraping plates are arranged inside the casing, a channel communicated with the dust storage chamber is arranged between the dust scraping plates and the casing and between the dust scraping plates, the erasing body is composed of a plurality of circular shafts connected to the left and right inner side walls of the casing, a roller penetrating through the circular shafts and an annular felt sleeved on the surface of the roller, the head part of the dust scraping plate is gradually narrowed to be triangular, and the top end of the head part of the dust scraping plate is contacted with the annular felt. Although the dustproof blackboard eraser can reduce and collect dust generated in the blackboard erasing process, the dustproof blackboard eraser utilizes the top end of the dust scraping plate to be contacted with the top end of the felt of the annular roller, and when the felt rolls, the dust scraping plate and the felt are abutted and rubbed to achieve the effect of erasing the dust.

SUMMERY OF THE UTILITY MODEL

The utility model aims to the deficiencies in the prior art exist, the utility model provides a dust-proof blackboard eraser that in use can effectively strike off the dust on the blackboard eraser and unify the collection to it, including erasing the body and being used for the fixed casing of erasing the body, inside first space and the second space of including of casing, first space one end is for scraping the dirt device with casing fixed connection, and the other end is for erasing the body, it has the roller bearing interval arrangement of annular felt to constitute by a plurality of cladding to erase the body, roller bearing top junction rotates with shells inner wall to be connected, a plurality of roller bearing protrusion casing notch and each center pin are in same horizontal plane, it fully contacts with the annular felt on every roller bearing to scrape the dirt device, the second space is for storing up the dirt room, first space is equipped with filter equipment with second space junction.

Through the technical scheme, in the use process of the blackboard eraser, the roller type erasing body can adsorb dust onto the annular felt of the roller type erasing body, the dust scraping device can fully scrape the dust on the annular felt while the roller rolls, the scraped dust is accumulated in the dust storage chamber through the filtering device, the dust is accumulated to be thick enough, the dust is uniformly cleaned through the opening formed in the dust storage chamber, the cleaning and the collection of the dust attached to the roller type erasing body are structurally facilitated, and the manpower is reduced.

Further setting: the erasing body is formed by sequentially arranging a plurality of rollers coated with annular felts, the connecting part of the top ends of the rollers is in rolling connection with the inner wall of the shell, and the plurality of rollers protrude out of the notch of the shell and the central shafts are positioned in the same horizontal plane.

Through the technical scheme, the structure that the roller is coated by the annular felt leads the use area of the eraser to be larger than that of a common eraser, the space is saved, the service life of the eraser is prolonged, the erasing body can drive the shell to roll in the horizontal plane in the rolling connection mode of the joint of the two top ends of the roller and the inner wall of the shell, the required stress of the eraser in the process of erasing the blackboard is ensured to be smaller, and the eraser is convenient to use.

Further setting: the dust scraping device is a plastic hard brush, the bottom surface of the brush is fixedly connected with the inner bottom surface of the shell, the brush is fully contacted with the felt on each rolling shaft and does not block the rolling shaft from rolling, and the annular felt coated on the rolling shaft is in rolling friction with the dust scraping device when the rolling shaft rolls.

Through the technical scheme, the dust scraping device can automatically scrape dust attached to the erasing body in the use process of the blackboard eraser due to the roller type structure of the erasing body, labor is saved, and the dust scraping device can fully scrape the dust on the annular felt due to the fact that the plastic hard hairbrush is fully contacted with the felt on the roller, and the repeated use of the blackboard eraser is facilitated.

Further setting: first space and second space junction are equipped with filter equipment, filter equipment is the cotton and is equipped with the through-hole of being covered with the cotton surface.

Through above-mentioned technical scheme, it can pile up the dust storage chamber through the through-hole on the cotton to wipe off the dust that the quilt was scraped off, and cotton itself has the adsorption to the dust, has been convenient for the collection and the clearance of dust.

Further setting: the volume of the second space is one fifth of the total volume in the shell, a sealing plate is arranged at the groove opening of the second space, replaceable sponge is arranged on the sealing plate, the sponge and the roller are in the same plane, and an annular pull ring is arranged on the opening of the opening space.

Through the technical scheme, when the blackboard eraser is used, the sponge arranged on the sealing plate can be used for wiping the wiped blackboard for the second time, so that the time for wiping the blackboard is saved, the annular pull ring arranged at the opening is convenient for taking out the piston, and the accumulated dust is guaranteed to be cleaned in time.

To sum up, the utility model discloses there is following beneficial effect:

the dust scraping device of the hard plastic brush is in rolling friction with the roller type erasing body, so that dust attached to a felt on a roller in the using process is fully scraped, and the cotton cloth with through holes distributed on the surface of the dust storage chamber ensures that the scraped dust can be effectively collected and cleaned, so that the blackboard eraser is repeatedly and effectively used, the harm of the dust to the bodies of teachers and students is reduced, and the office teaching environment is improved.

Drawings

Fig. 1 is a general appearance structure diagram of the embodiment of the present invention;

fig. 2 is a side sectional view of the present embodiment of the invention.

In the figure, 1, an erase block; 2. a housing; 3. a dust scraping device; 4. a roller; 5. a dust storage chamber; 6. an annular felt; 7. A plastic hard brush; 8. a filtration device; 9. a sponge; 10. a piston; 11. an annular pull ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A novel dustproof blackboard eraser comprises an erasing body 1 used for erasing a blackboard and a shell 2 used for fixing the erasing body 1, and in the embodiment, in addition to the erasing body 1 and the shell 2, a dust scraping device 3 used for scraping dust on the erasing body 1 and a dust storage chamber 5 used for collecting the dust are further arranged.

As shown in fig. 1 and 2, the dust scraping device 3 is located at the lowest position in the casing 2, the casing 2 is square, round holes which do not penetrate through are formed in the inner walls of the two long edges, the diameter of each round hole is larger than that of the round end connecting end of the roller 4, the length of the short edge of the casing 2 is larger than that of the roller 4, the erasing body 1 is arranged above the dust scraping device 3, part of the erasing body 1 protrudes out of the notch of the casing 2, and the dust storage chamber 5 is arranged in the casing 2 and located on the right side of the erasing body 1.

As shown in fig. 1 and 2, the erasing body 1 is formed by sequentially arranging four rollers 4 at intervals, each roller 4 has the same interval size and is one third of the radius of the top surface of a cylinder of the roller 4, the central shafts of the four rollers 4 are on the same horizontal plane and protrude out of the notches of the shell 2, the protruding height is one half of the radius of the top surface of the cylinder of the roller 4, four pairs of counter bores which correspond to one another are arranged on the inner walls of the two longer ends of the shell 2, the joints of the top ends of the four rollers 4 correspond to the four pairs of counter bores one by one and are rotatably connected, when the shell 2 is pushed by a hand, the four rollers 4 can roll in the same direction at the same time, the surfaces of the four rollers 4 are coated with annular felts 6, and when the rollers 4 roll, the annular felts 6 can contact with a blackboard and adsorb dust on the.

As shown in fig. 1, since the dust is to be collected and removed in time after being scraped, in this embodiment, a dust storage chamber 5 is also provided, the dust storage chamber 5 is a square space located at the right end inside the housing 2, the volume of the space is one fifth of the total volume of the housing 2, the dust storage chamber 5 is provided with a sealing plate at the notch of the housing 2, a replaceable sponge 9 is provided on the sealing plate, the sponge 9 and the four rollers 4 are on the same horizontal plane, in the use process of the blackboard eraser, the sponge 9 can remove the blackboard for the second time, and a filtering device 8 is provided between the dust storage chamber 5 and the erasing body 1 and between the dust scraping device 3.

Filter equipment 8 is the cotton that the surface was covered with the through-hole in this embodiment, and cotton itself has adsorption to the dust, so can effectual collection strike off the dust and pile up in storing up dirt room 5, store up dirt room 5 and be equipped with a little square opening and be equipped with cyclic annular pull ring 11 in the opening outer end, when storing up dirt room 5 in the dust collection enough, alright clear away through the opening is unified, the blackboard eraser also can used repeatedly consequently.

As shown in figure 2, the material of the dust scraping device 3 in the embodiment is a plastic hard brush 7, the bottom shell of the brush is fixedly connected with the inner bottom surface of the shell 2, the brush part of the brush faces to the direction consistent with the direction of the groove opening and is fully contacted with the felts on the four rollers 4, when the rollers 4 roll, the brush part of the brush is in rolling friction with the felts on the rollers 4 but does not obstruct the normal rolling of the rollers 4, thereby effectively scraping the dust attached to the annular felts 6 in the use process of the blackboard eraser.

When the blackboard eraser is used specifically, a hand applies enough pressure to the back of the shell 2 to enable the erasing body 1 and a blackboard to be in contact friction, meanwhile, the blackboard eraser is driven to move up and down by the hand, namely, the four rolling shafts 4 are driven to roll up and down, the annular felt 6 coated on the rolling shafts 4 can roll and rub with the blackboard and adsorb dust onto the blackboard, and the sponge 9 arranged on the sealing plate of the dust storage chamber 5 can wipe the blackboard for the second time when the blackboard eraser is used, so that the effect of cleaning the blackboard is achieved.

When the roller 4 rolls, the plastic hard hairbrush 7 with the inner bottom layer fully contacted with the annular felt 6 can continuously rub with the annular felt 6, namely, the effect of scraping off dust attached to the annular felt 6 is achieved, the scraped dust can be collected into the dust storage chamber 5 through the fine holes in the cotton cloth, when the dust is collected sufficiently, the opening piston 10 of the dust storage chamber 5 is pulled out through the annular pull ring 11, and the dust is uniformly cleaned.

The above-mentioned embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the present invention.

Claims

1. The utility model provides a novel dustproof blackboard eraser, includes the body (1) of erasing that is used for wiping the blackboard and is used for fixed casing (2) of erasing body (1), characterized by: the dust collection device is characterized in that the shell (2) comprises a first space and a second space, one end of the first space is a dust collection device (3) fixedly connected with the shell (2), the other end of the first space is a cleaning body (1), the cleaning body (1) is formed by arranging a plurality of rollers (4) coated with annular felts (6) at intervals, the top end of each roller (4) is rotatably connected with the inner wall of the shell (2), the plurality of rollers (4) protrude out of the notches of the shell (2) and are respectively provided with a central shaft in the same horizontal plane, the dust collection device (3) is fully contacted with the annular felts (6) on each roller (4), the second space is a dust storage chamber (5), and the joint of the first space and the second space is

A filter device (8) is provided.

2. The novel dustproof blackboard eraser as claimed in claim 1, which is characterized in that: the dust scraping device (3) is a plastic hard brush (7), the bottom surface of the brush is fixedly connected with the inner bottom surface of the shell (2), and the brush is fully contacted with the annular felt (6) on each rolling shaft (4).

3. The novel dustproof blackboard eraser as claimed in claim 1, which is characterized in that: the rolling shafts (4) are same in interval size, and the interval size is smaller than the radius of the cylindrical top surface of each rolling shaft (4).

4. The novel dustproof blackboard eraser as claimed in claim 1, which is characterized in that: the volume of the second space is one fifth of the total volume in the shell (2), a sealing plate is arranged at the groove opening of the second space, replaceable sponge (9) is arranged on the sealing plate, and the sponge (9) and the roller (4) are in the same plane.

5. The novel dustproof blackboard eraser as claimed in claim 1, which is characterized in that: casing (2) are square and are equipped with the round hole that does not run through at two long limit inner walls, round hole diameter size is greater than the diameter of roller bearing (4) dome end link, casing (2) minor face length is greater than roller bearing (4) length.

6. The novel dustproof blackboard eraser as claimed in claim 1, which is characterized in that: the filtering device (8) is cotton cloth which is provided with through holes on the surface.

7. The novel dustproof blackboard eraser as claimed in claim 1, which is characterized in that: the second space is provided with an opening, the opening is movably connected with the piston (10), and the piston (10) is provided with an annular pull ring (11).