CN214057068U

CN214057068U - Turnover dust-collecting blackboard eraser

Info

Publication number: CN214057068U
Application number: CN202023197142.1U
Authority: CN
Inventors: 佟博远
Original assignee: Inner Mongolia University of Technology
Current assignee: Inner Mongolia University of Technology
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-08-27
Anticipated expiration: 2030-12-24

Abstract

The utility model provides a upset collection dirt blackboard eraser relates to the teaching aid field. A turnover dust collection blackboard eraser comprises a shell, a frame and an eraser body, wherein the eraser body is arranged in the frame, the eraser body is rotatably connected with the frame, the frame is arranged in the shell, one side of the frame is hinged with the shell, one end, far away from the hinged shell, of the frame is provided with a locking mechanism, and the frame is connected with the shell through the locking mechanism. The eraser body can rotate in the frame to replace the eraser surface, and after the blackboard eraser is fully stained with chalk dust, the eraser body can be continuously used by turning over, so that the dust cleaning period is prolonged, and the continuous flying of the chalk dust caused by frequent dust cleaning is reduced; after the eraser body which is full of chalk dust is turned over, the shell is tapped to shake off the chalk dust on the eraser body; because the eraser body which is full of chalk dust faces the inner side of the shell, the chalk dust which falls off by vibration can be kept at the inner side of the shell and cannot scatter around, the pollution to the surrounding environment is reduced, and the influence on the body health of students and teachers is reduced.

Description

Turnover dust-collecting blackboard eraser

Technical Field

The utility model relates to a teaching aid field, in particular to upset collection dirt blackboard eraser.

Background

Nowadays, although the education level of China is increased year by year, education equipment is improved year by year, and multimedia classrooms are gradually popularized, the blackboard eraser is indispensable in daily teaching. The blackboard eraser is mainly used for erasing the traces on the blackboard so as to realize rewriting.

The traditional blackboard eraser only has one erasing surface, chalk dust can be fully adhered to the traditional blackboard eraser after the traditional blackboard eraser is used for a plurality of times, and the problem that the blackboard eraser is not clean can occur after an erasing body of the blackboard eraser is fully adhered with the chalk dust; in addition, the chalk dust stuck on the eraser body of the blackboard eraser can not be effectively cleaned, and reasonable storage is not carried out; in order to remove the chalk dust stained on the eraser body, the blackboard eraser can only be lightly tapped on the ground or other places, so that a large amount of chalk dust is generated, and the surrounding environment is polluted; the long-term suction of the chalk dust is harmful to the physical health of students and teachers, and even causes occupational diseases of the teachers.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a upset collection dirt blackboard eraser has prolonged the deashing cycle of blackboard eraser, and has provided the collection dirt space, reduces the pollution of chalk dust to all ring edge borders.

The embodiment of the utility model is realized like this:

the embodiment of the application provides a upset collection dirt blackboard eraser, including casing, frame and the body of wiping, wipe the body and set up in the frame, wipe the body and rotate with the frame and be connected, the frame sets up in the casing, and one side of frame is articulated with the casing, and the one end that articulated casing was kept away from to the frame has locking mechanical system, and the frame passes through locking mechanical system and is connected with the casing.

In some embodiments of the present invention, a central shaft is disposed in the frame, the wiping body is disposed with a through hole matching with the central shaft, and the wiping body is rotatably connected with the central shaft through the through hole.

In some embodiments of the present invention, the locking mechanism includes a protrusion and a first elastic element, the frame is connected to the protrusion through the first elastic element, and the sidewall of the housing is provided with a positioning hole matched with the protrusion.

In some embodiments of the present invention, the frame further comprises an ejection mechanism for ejecting the frame out of the housing.

In some embodiments of the present invention, the pop-up mechanism includes a rotary rod and a second elastic element, one end of the rotary rod is hinged to the frame, the other end of the rotary rod is abutted to the housing, and the second elastic element is connected between the rotary rod and the frame.

The utility model discloses an in some embodiments, the casing is provided with the fixed axle, and a lateral wall of frame is seted up with fixed axle matched with mounting groove, and the frame realizes rotating through the fixed axle that cup joints in the mounting groove.

The utility model discloses an in some embodiments, still including the subassembly of applying paint with a brush that is used for the blade coating to wipe body wall dust, apply paint the subassembly with a brush and include the brush hair, the body of rod and locating piece, the brush hair sets up on the lateral wall of the body of rod, and the spout that is used for setting up the body of rod is all offered to the relative both sides wall of casing, and locating piece fixed connection is at body of rod both sides tip.

In some embodiments of the present invention, the bottom of the housing is provided with a cover.

In some embodiments of the present invention, the elastic band is used for fixing the palm of the human body, and both ends of the elastic band are connected to the outer side wall of the bottom of the casing.

In some embodiments of the present invention, the outer sidewall of the bottom of the housing has a groove for fitting with the palm of the human body.

Compared with the prior art, the embodiment of the utility model has following advantage or beneficial effect at least:

the embodiment provides a turnover dust collection blackboard eraser which comprises a shell, a frame and an eraser body, wherein the eraser body is arranged in the frame, the eraser body is rotatably connected with the frame, the frame is arranged in the shell, one side of the frame is hinged with the shell, one end, far away from the hinged shell, of the frame is provided with a locking mechanism, and the frame is connected with the shell through the locking mechanism. The eraser body can rotate in the frame to replace the eraser surface, and after the blackboard eraser is fully stained with chalk dust, the eraser body can be continuously used by turning over, so that the dust cleaning period is prolonged, and the continuous flying of the chalk dust caused by frequent dust cleaning is reduced; after the eraser body which is full of chalk dust is turned over, the shell is tapped to shake off the chalk dust on the eraser body; because the eraser body which is full of chalk dust faces the inner side of the shell, the chalk dust which falls off by vibration can be kept at the inner side of the shell and cannot scatter around, the pollution to the surrounding environment is reduced, and the influence on the body health of students and teachers is reduced.

When the eraser is in actual use, after the erasing surface of the eraser is fully stained with chalk dust, the eraser is turned over in the frame, the erasing surface fully stained with chalk dust is turned to the inner side of the shell, and the clean erasing surface is turned to the outer side of the shell, so that the eraser can be continuously used; after the eraser surface which is full of chalk dust turns to the inner side of the shell, the shell is knocked to shake off the chalk dust which is full of the eraser body; and opening the locking mechanism, rotatably lifting the frame and the eraser body around one end of the frame, which is hinged with the shell, and pouring out the chalk dust collected in the shell. After the chalk dust is dumped, the locking mechanism is locked again, and the blackboard eraser can be continuously used.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of the overall structure of a turnover dust collecting blackboard eraser according to an embodiment of the present invention;

fig. 2 is a schematic view of the entire internal structure of the turnover dust collecting blackboard eraser with an ejection mechanism according to the embodiment of the present invention after the locking mechanism is opened;

FIG. 3 is a schematic view of a connection structure of the frame, the wiper and the pop-up mechanism according to an embodiment of the present invention;

FIG. 4 is a schematic view of a wiper structure according to an embodiment of the present invention;

FIG. 5 is a partial view of embodiment A of the present invention;

fig. 6 is a schematic view of a structure for disassembling the frame and the housing according to the embodiment of the present invention;

fig. 7 is a schematic view of a connection structure of the frame and the housing according to the embodiment of the present invention;

fig. 8 is a schematic view of the bottom structure of the dust collecting blackboard eraser according to the embodiment of the present invention;

fig. 9 is a schematic view of a fastening structure of the cover and the housing according to the embodiment of the present invention.

Icon: 1-a shell; 101-a positioning hole; 102-a guide notch; 103-a boss; 104-a fixed shaft; 105-a chute; 106-a card block; 107-grooves; 2-a frame; 201-central axis; 202-a limit groove; 203-a cavity; 204-mounting grooves; 3, wiping the body; 301-a through hole; 4-a locking mechanism; 401-bumps; 402-a first resilient element; 5-an ejection mechanism; 501-rotating rod; 502-a second resilient element; 6-brushing the component; 601-a rod body; 602-a positioning block; 603-bristles; 7-a cover body; 701-card slot; 8-elastic band.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when using, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to which the description refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, "a plurality" means at least 2.

In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed," "mounted," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example 1

Referring to fig. 1, fig. 2, fig. 3 and fig. 4, fig. 1 is a schematic view of an overall structure of a turnover dust collecting blackboard eraser according to an embodiment of the present invention; fig. 2 is a schematic view of the whole internal structure of the turnover dust collecting blackboard eraser with an ejection mechanism 5 according to the embodiment of the present invention after the locking mechanism 4 is opened; fig. 3 is a schematic view of a connection structure of the frame 2, the wiping body 3 and the ejection mechanism 5 according to the embodiment of the present invention; fig. 4 is a schematic structural view of the wiper body 3 according to the embodiment of the present invention.

The embodiment provides a turnover dust collecting blackboard eraser which comprises a shell 1, a frame 2 and an eraser body 3, wherein the eraser body 3 is arranged in the frame 2, the eraser body 3 is rotatably connected with the frame 2, the frame 2 is arranged in the shell 1, one side of the frame 2 is hinged with the shell 1, one end, far away from the hinged shell 1, of the frame 2 is provided with a locking mechanism 4, and the frame 2 is connected with the shell 1 through the locking mechanism 4.

Casing 1 in this embodiment is

rectangle casing

1, and 1 top of casing is open structure, and frame 2 is rectangle frame 2, has the cavity in the rectangle frame 2, wipes body 3 and sets up in the cavity, wipes body 3 and includes two faces of wiping, wipes body 3 and can overturn in frame 2. After the eraser surface of the blackboard eraser with the turnable eraser surface is full of chalk dust, the eraser body 3 can be continuously used by turning in the frame 2, so that the dust cleaning period is prolonged, and the continuous flying of the chalk dust caused by frequent dust cleaning is reduced; after the eraser 3 which is full of chalk dust is turned over, the chalk dust on the eraser 3 can be shaken off by lightly tapping the shell 1; because the eraser 3 which is full of chalk dust faces the inner side of the shell 1, the chalk dust which falls off by vibration can be kept at the inner side of the shell 1 and can not be scattered all around, thereby reducing the pollution to the surrounding environment and reducing the influence on the bodies of students and teachers.

When in actual use, after the wiping surface of the wiping body 3 is fully stained with chalk dust, the wiping body 3 is turned over in the frame 2, so that the wiping surface fully stained with chalk dust is turned to the inner side of the shell 1, and the clean wiping surface is turned to the outer side of the shell 1, thus the eraser can be continuously used; after the eraser surface which is full of chalk dust turns to the inner side of the shell 1, knocking the shell 1 to shake off the chalk dust which is full of the eraser body 3; the chalk dust collected in the casing 1 can be dumped out by opening the locking mechanism 4 and lifting the frame 2 and the eraser body 3 in a rotating way around one end of the frame 2 hinged with the casing 1. After the chalk dust is dumped, the locking mechanism 4 is locked again, and the blackboard eraser is continuously used.

Furthermore, a central shaft 201 is arranged in the frame 2, a through hole 301 matched with the central shaft 201 is formed in the wiping body 3, and the wiping body 3 is rotatably connected with the central shaft 201 through the through hole 301.

The cross section of the central shaft 201 in the embodiment is circular, the length of the central shaft is the same as the length of the long side of the hollow cavity in the rectangular frame 2, and the geometric center of the side wall of the wiping body 3 is provided with a circular through hole 301 matched with the central shaft 201. After the center shaft 201 is inserted into the through hole 301, both ends of the center shaft 201 are fixed to the geometric centers of both inner side walls in the width direction of the frame 2 with an adhesive. The wiping body 3 is arranged in a hollow cavity of the rectangular frame 2 through a central shaft 201 and can rotate and turn over by taking the central shaft 201 as an axis; the distance between the central shaft 201 and the inner side wall of the bottom of the shell 1 is greater than half of the length of the wiping body 3 in the width direction, so that the contact between the inner side wall of the bottom of the shell 1 and the wiping body 3 during overturning can be avoided, and the chalk dust accumulated in the shell 1 is prevented from being stained on a clean wiping surface again.

In another embodiment except the above embodiment, screw holes are opened at both side end portions of the center shaft 201, screw holes corresponding to the screw holes of the center shaft 201 are opened in the frame 2, and the center shaft 201 is fixed to the frame 2 by screws and screw holes. The screw connection has the characteristic of being detachable. When the wiping body 3 and the frame 2 are damaged or reach the service life, the cleaning brush can be continuously used only by replacing corresponding parts, so that the use cost is reduced.

In the above embodiment, the width of the wiper 3 is slightly larger than the width of the hollow cavity in the frame 2. Because the wiping body 3 has certain elastic deformation capacity, after the wiping body 3 is turned over, the two side wall surfaces of the wiping body 3 can be clamped on the wall surface of the hollow cavity of the frame 2, and the shaking of the wiping body 3 is reduced.

Further, the locking mechanism 4 includes a protrusion 401 and a first elastic element 402, the frame 2 is connected to the protrusion 401 through the first elastic element 402, and a positioning hole 101 matched with the protrusion 401 is opened on a side wall of the housing 1.

In this embodiment, the frame 2 and the protrusion 401 are made of plastic, the first elastic element 402 is a coil spring made of carbon steel, and one end of the first elastic element 402 is connected to the outer sidewall of the frame 2 by plastic heat staking. The use of plastic heat staking to bond enables plastic and metal components to be bonded in a manner that optimally takes up the external loads. When the plastic hot riveting technology is adopted, the plastic shaft pin reserved in an integral die is heated and softened, and then the parts are locked together after being punched and deformed by a cold die, so that the cost of a connecting part is saved; the other end of the first elastic element 402 is connected with the bump 401 by adopting the plastic hot riveting technology; the side wall of the shell 1 is provided with a positioning hole 101, after the first elastic element 402 is compressed, the lug 401 is inserted into the positioning hole 101 from the inner side of the shell 1, and the locking mechanism 4 is fixed with the shell 1; the frame 2 is provided with a limiting groove 202 at one end connected with the locking mechanism 4, the frame 2 and the limiting groove 202 are integrally formed by injection molding, and the first elastic element 402 and the lug 401 are arranged in the limiting groove 202. Because the spring is easy to shake, the limiting groove 202 avoids the shaking of the whole frame 2 and the wiping body 3 caused by the shaking of the spring, and the use comfort is improved; meanwhile, the locking mechanism 4 can be loosened due to the spring shaking, and the limiting groove 202 avoids the risk of self-opening caused by the loosening of the locking mechanism 4.

In other embodiments except the above embodiments, the first elastic element 402 is an arc-shaped elastic sheet made of carbon steel, and two ends of the arc-shaped elastic sheet are respectively connected with the bump 401 and the frame 2 by using a plastic hot riveting technique.

In the above embodiment, the inner side wall of the housing 1 above the positioning hole 101 is formed with the guiding notch 102, and the end of the protrusion 401 away from the first elastic mechanism has a rounded structure. After the convex block 401 is pressed, the convex block 401 slides into the shell 1 through the guide notch 102, so that the usability of the product is improved; the rounded projections 401 are more easily slid into the housing 1 from the guide notches 102; meanwhile, the convex block 401 with the round angle reduces the oppressive feeling of the convex block 401 to the hand, and improves the use experience.

In actual use, the projection 401 extending from the positioning hole 101 is pressed, the projection 401 compresses the first elastic member 402, the projection 401 enters the housing 1, and the lock mechanism 4 is opened; the projection 401 is pressed, the projection 401 compresses the first elastic member 402, the projection 401 is inserted into the positioning hole 101 from the inside of the housing 1, and the lock mechanism 4 is fixed to the housing 1.

Example 2

Referring to fig. 2 and 5, fig. 2 is a schematic view of the entire internal structure of the turnover dust collecting blackboard eraser with an eject mechanism 5 according to the embodiment of the present invention after the locking mechanism 4 is opened; fig. 5 is a partial view of the embodiment of the present invention from direction a.

The present embodiment proposes, based on the technical solution of embodiment 1: an ejection mechanism 5 is also included to eject the frame 2 out of the housing 1.

The ejection mechanism 5 in the embodiment can automatically jack the frame 2 when the locking mechanism 4 is opened, and the frame 2 does not need to be turned over by hands, so that the usability of the product is improved.

Further, the pop-up mechanism 5 includes a rotating rod 501 and a second elastic element 502, one end of the rotating rod 501 is hinged to the frame 2, the other end of the rotating rod 501 abuts against the housing 1, and the second elastic element 502 is connected between the rotating rod 501 and the frame 2.

In this embodiment, the rotating rod 501 and the frame 2 are made of plastic, the bottom of the sidewall of the frame 2 is provided with a concave cavity 203, and one end of the rotating rod 501 is provided with a shaft hole; the rotating shaft is inserted into the shaft hole and is rotationally connected with the rotating rod 501, and two ends of the rotating shaft are fixed on the inner side wall surface at one end of the cavity 203 through an adhesive; the second elastic element 502 is a helical spring made of carbon steel, one end of the second elastic element 502 is connected with the side wall of the end of the rotating rod 501 far away from the rotating shaft through a plastic hot riveting technology, and the other end of the second elastic element 502 is fixed on the wall surface of the end of the cavity 203 far away from the fixed rotating shaft; the inner wall surface of the housing 1 is provided with a boss 103, and one end of the rotating rod 501, which is far away from the rotating shaft, is abutted against the boss 103. When the locking mechanism 4 is locked, the second elastic element 502 is in a compressed state; after the locking mechanism 4 is opened, the second elastic member 502 lifts up the frame 2 in the process of returning to the free state.

In other embodiments except for the above embodiments, the ejection mechanism 5 is an arc-shaped elastic sheet, both ends of the arc-shaped elastic sheet are provided with screw holes, the inner wall surface of the bottom of the casing 1 is provided with screw holes, the bottom of the side frame of the frame 2 is provided with screw holes, one end of the arc-shaped elastic sheet is connected with the inner wall surface of the bottom of the casing 1 through the screws and the screw holes, and the other end of the arc-shaped elastic sheet is connected with the bottom of the side frame of the frame 2 through the screws and the screw holes. When the locking mechanism 4 is fixed with the shell 1, the arc-shaped elastic sheet is in a compressed state between the inner wall surface of the shell 1 and the frame 2; after the locking mechanism 4 is opened, the arc-shaped elastic sheet jacks up the frame 2 in the process of recovering to the free state.

Example 3

Referring to fig. 6 and 7, fig. 6 is a schematic view illustrating a structure of the frame 2 and the housing 1 according to an embodiment of the present invention; fig. 7 is a schematic view of a connection structure between the frame 2 and the housing 1 according to the embodiment of the present invention.

The present embodiment proposes, based on the technical solution of embodiment 1: the casing 1 is provided with a fixed shaft 104, one side edge of the frame 2 is provided with a mounting groove 204 matched with the fixed shaft 104, and the frame 2 rotates through the fixed shaft 104 sleeved in the mounting groove 204.

The fixing shaft 104 in this embodiment is disposed on the inner wall of the housing 1 and is formed by injection molding integrally with the housing 1; one side of the frame 2 is provided with a mounting groove 204; the mounting groove 204 is sleeved on the fixing shaft 104, and the mounting groove 204 and the fixing shaft 104 can rotate relatively. The frame 2 is sleeved with the fixed shaft 104 through the mounting groove 204, so that the frame 2 and the shell 1 can be detached and separated, and subsequent cleaning is facilitated; meanwhile, when the assembly or the shell 1 consisting of the frame 2 and the wiping body 3 is damaged, the cleaning brush can be continuously used only by replacing corresponding assemblies or parts, so that the use cost is reduced.

In actual use, the locking mechanism 4 is opened, and the frame 2 can be detached by separating the mounting groove 204 from the fixed shaft 104; the frame 2 and the housing 1 can be mounted by locking the locking mechanism 4 by locking the fixing shaft 104 in the mounting groove 204.

Example 4

Referring to fig. 1 and 2, fig. 1 is a schematic view of an overall structure of a blackboard eraser with dust collection and turnover function according to an embodiment of the present invention; fig. 2 is a schematic view of the whole internal structure of the turnover dust collecting blackboard eraser with the eject mechanism 5 according to the embodiment of the present invention after the locking mechanism 4 is opened.

The present embodiment proposes, based on the technical solution of embodiment 1: the wall-surface dust cleaning device is characterized by further comprising a brushing assembly 6 used for scraping wall-surface dust on the wiping body 3, wherein the brushing assembly 6 comprises bristles 603, a rod body 601 and a positioning block 602, the bristles 603 are arranged on the side wall of the rod body 601, the two opposite side walls of the shell 1 are respectively provided with a sliding groove 105 used for erecting the rod body 601, and the positioning block 602 is fixedly connected to the end parts of the two sides of the rod body 601.

In this embodiment, the side wall of the rod body 601 is provided with a plurality of hair planting holes, and one end of the brush hair 603 is adhered to the hair planting holes through an adhesive; the two opposite side walls of the shell 1 are both provided with sliding grooves 105, and the end parts of the two sides of the rod body 601 are erected in the sliding grooves 105; rectangular positioning blocks 602 are arranged at the end parts of the two ends of the rod body 601, and after the rod body 601 is erected in the sliding groove 105, the two positioning blocks 602 are respectively fixed at the end parts of the two ends of the rod body 601 through adhesives; the brushing component 6 repeatedly moves along the sliding groove 105, the brush hair 603 fixed on the rod body 601 is used for cleaning the eraser 3, and the chalk dust on the eraser 3 is swept down into the shell 1; compared with the case that the chalk dust is shaken off by knocking the shell 1, the cleaning effect of the eraser 3 by utilizing the brush hair 603 is better; meanwhile, the damage to the shell 1 caused by knocking can be reduced, and the service life of the product is prolonged; the positioning block 602 can prevent the rod body 601 from falling off from the sliding groove 105; meanwhile, the positioning block 602 can increase the contact area between the hand and the brushing assembly 6, and improve the use experience.

In the above example, the rectangular positioning block 602 has a rounded corner, which can reduce the oppressive feeling of the positioning block 602 to the hand, and improve the use experience;

in other embodiments except the above embodiments, the end portions of the two ends of the rod body 601 are both provided with screw holes, the side walls of the positioning blocks 602 are provided with screw holes, and the two positioning blocks 602 are respectively fixedly connected to the end portions of the two ends of the rod body 601 through screws and screw holes. The screw connection has the detachable advantage, when brush hair 603 need be changed or body of rod 601 damages, only need change corresponding spare part after the dismantlement and can continue to use, reduced use cost.

Example 5

Referring to fig. 8 and 9, fig. 8 is a schematic view of a bottom structure of a blackboard eraser with dust collection for turnover mechanism according to an embodiment of the present invention; fig. 9 is a schematic view of a fastening structure between the cover 7 and the housing 1 according to the embodiment of the present invention.

The present embodiment proposes, based on the technical solution of embodiment 1: the bottom of the shell 1 is provided with a cover body 7.

In this embodiment, one end of the cover 7 is hinged to the housing 1 through a hinge, the other end of the cover 7 is provided with a slot 701 having a semicircular cross section, a locking block 106 engaged with the slot 701 is provided at the end of the housing 1 locked to the cover 7, and the cover 7 and the housing 1 are locked to each other through the slot 701 and the locking block 106. After the eraser 3 is cleaned, the chalk dust remaining in the casing 1 can be poured out by opening the cover 7.

In other embodiments except the above embodiments, the bottom of the housing 1 is provided with a circular hole, the cover 7 is a rubber plug, and the cover 7 is tightly fitted, fastened and fixed with the circular hole.

Example 6

Referring to fig. 8, fig. 8 is a schematic view of a bottom structure of a blackboard eraser with dust collection and turnover function according to an embodiment of the present invention.

The present embodiment proposes, based on the technical solution of embodiment 1: the palm-shaped shell is characterized by further comprising an elastic belt 8 used for fixing the palm of a human body, and two ends of the elastic belt 8 are connected to the outer side wall of the bottom of the shell 1.

Aramid fiber elasticity meshbelt is chooseed for use to elastic webbing 8 in this embodiment, has seted up the screw hole on the 1 bottom lateral wall of casing, and the screw is passed through at elastic webbing 8's both ends and screw hole fixation on the 1 bottom outer wall of casing. The elastic belt 8 can play a certain fixing role in the palm, and the use experience of the product is improved.

In other embodiments than the above, the two ends of the elastic band 8 are fixed to the outer wall surface of the bottom of the housing 1 by the AB glue.

Further, the outer side wall of the bottom of the shell 1 is provided with a groove 107 which is fit with the palm of the human body.

Recess 107 with the laminating of human palm in this embodiment can increase the area of contact of hand and casing 1, can provide certain horizontal positioning effect simultaneously, increases use comfort to promote to use and experience.

In the above embodiment, the surface of the groove 107 has ripples which can increase the friction between the palm and the housing 1 and reduce the risk of the blackboard eraser slipping during use.

To sum up, the utility model provides a upset collection dirt blackboard eraser, including casing 1, frame 2 and the body 3 of wiping, wipe the body 3 and set up in frame 2, wipe body 3 and rotate with frame 2 and be connected, frame 2 sets up in casing 1, and one side of frame 2 is articulated with casing 1, and frame 2 keeps away from the one end of articulated casing 1 and has locking mechanical system 4, and frame 2 passes through locking mechanical system 4 and is connected with casing 1. The wiping body 3 can rotate in the frame 2 to replace the wiping surface. After the blackboard eraser is fully stained with chalk dust, the eraser body 3 can be continuously used after being overturned, so that the dust cleaning period is prolonged, and the continuous flying of the chalk dust caused by frequent dust cleaning is reduced; after the eraser 3 which is full of chalk dust is turned over, the shell 1 is tapped, and then the chalk dust on the eraser 3 can be shaken off; because the eraser 3 which is full of chalk dust faces the inner side of the shell 1, the chalk dust which falls off by vibration can be kept at the inner side of the shell 1 and can not be scattered all around, thereby reducing the pollution to the surrounding environment and reducing the influence on the body health of students and teachers.

When in actual use, after the wiping surface of the wiping body 3 is fully stained with chalk dust, the wiping body 3 is turned over in the frame 2, so that the wiping surface fully stained with chalk dust is turned to the inner side of the shell 1, and the clean wiping surface is turned to the outer side of the shell 1, thus the eraser can be continuously used; after the eraser surface which is full of chalk dust turns to the inner side of the shell 1, knocking the shell 1 to shake off the chalk dust which is full of the eraser body 3; the locking mechanism 4 is opened, the frame 2 and the eraser body 3 are lifted in a rotating mode around one end, hinged with the shell 1, of the frame 2, chalk dust collected in the shell 1 is poured out, after the chalk dust is poured out, the locking mechanism 4 is locked again, and the blackboard eraser can be used continuously.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The turnover dust collection blackboard eraser is characterized by comprising a shell, a frame and an eraser body, wherein the eraser body is arranged in the frame, the eraser body is rotatably connected with the frame, the frame is arranged in the shell, one side of the frame is hinged with the shell, one end, far away from the shell, of the frame is provided with a locking mechanism, and the frame is connected with the shell through the locking mechanism.

2. The blackboard eraser with dust collection function according to claim 1, wherein a central shaft is disposed in the frame, the eraser body is provided with a through hole matching with the central shaft, and the eraser body is rotatably connected with the central shaft through the through hole.

3. The blackboard eraser with dust collecting function in the turnover mode according to claim 1, wherein the locking mechanism includes a protrusion and a first elastic element, the frame is connected with the protrusion through the first elastic element, and a positioning hole matched with the protrusion is formed in the side wall of the housing.

4. The reversible dirt collecting blackboard eraser of claim 1, further comprising an ejection mechanism to eject the frame out of the housing.

5. The reversible dust-collecting blackboard eraser as claimed in claim 4, wherein the ejecting mechanism comprises a rotating rod and a second elastic element, one end of the rotating rod is hinged to the frame, the other end of the rotating rod is abutted against the housing, and the second elastic element is connected between the rotating rod and the frame.

6. The blackboard eraser with dust collecting function in claim 1, wherein the housing has a fixed shaft, a mounting groove is formed on one side wall of the frame for engaging with the fixed shaft, and the frame rotates via the fixed shaft sleeved in the mounting groove.

7. The blackboard eraser with dust collection function according to claim 1, further comprising a brushing assembly for scraping dust on the wall of the eraser, wherein the brushing assembly comprises bristles, a rod body and a positioning block, the bristles are arranged on the side wall of the rod body, sliding grooves for erecting the rod body are formed in two opposite side walls of the casing, and the positioning block is fixedly connected to the end portions of the two sides of the rod body.

8. The reversible dust collecting blackboard eraser of claim 1, wherein the bottom of the housing is provided with a cover.

9. The reversible dust-collecting blackboard eraser as claimed in claim 1, further comprising an elastic band for fixing the palm of a human body, wherein both ends of the elastic band are connected to the outer sidewall of the bottom of the housing.

10. The blackboard eraser with dust collection function in a turnover manner as claimed in claim 9, wherein the outer side wall of the bottom of the housing is provided with a groove for fitting with the palm of a human body.