CN108705886B

CN108705886B - Blackboard eraser device

Info

Publication number: CN108705886B
Application number: CN201810745497.8A
Authority: CN
Inventors: 常帆; 蒋鸿阳; 雷湣
Original assignee: Nanjing Institute of Industry Technology
Current assignee: Nanjing Institute of Industry Technology
Priority date: 2018-07-09
Filing date: 2018-07-09
Publication date: 2023-07-18
Anticipated expiration: 2038-07-09
Also published as: CN108705886A

Abstract

The invention discloses a blackboard eraser device; the technical problems to be solved are as follows: aiming at the technical problems that in the background art, a teacher cannot conveniently erase a blackboard after writing a large-area blackboard book in the course of lesson, chalk dust flies in a classroom in disorder and the blackboard cleaning is laborious. The technical scheme is as follows: a blackboard eraser device comprises an upper rail, a lower rail, a main shaft shell, a board brush frame, a handle shell, a handle and a dust collecting box. The advantages are that: the blackboard eraser device has the functions of simply erasing a large area of blackboard, simply cleaning the blackboard once, selectively selecting the blackboard area to erase the blackboard and preventing dust, has the advantages of simple operation and no occupation of the blackboard space, and greatly improves the learning environment of classrooms.

Description

Blackboard eraser device

Technical Field

The invention relates to a blackboard eraser device.

Background

With the rapid development of economy and science and technology of China since the innovation is open, china is more and more important in the aspect of education of students, particularly in the aspect of learning environment of the students, china is the first large population country in the world, the number of the students is a huge number, and the education environment of the students is particularly important for the learning of the students.

In the course of lessons, the teacher is inconvenient to wipe the blackboard after writing a large-area blackboard book, chalk dust flies in disorder in the classroom, and the blackboard cleaning is laborious.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: aiming at the technical problems that in the background art, a teacher cannot conveniently erase a blackboard after writing a large-area blackboard book in the course of lesson, chalk dust flies in a classroom in disorder and the blackboard cleaning is laborious.

The invention provides a blackboard eraser device which has the functions of simply erasing a blackboard in a large area, simply cleaning the blackboard once, selectively selecting the blackboard area to erase the blackboard and preventing dust, has the advantages of simple operation and no occupation of the blackboard space, and greatly improves the learning environment of classrooms.

In order to solve the technical problems, the invention adopts the following technical scheme:

a blackboard eraser device comprises an upper rail, a lower rail, a main shaft housing, a board brush frame, a handle housing, a handle and a dust collecting box,

the upper rail is horizontally arranged on the wall body above the blackboard, and a rail groove of the upper rail faces to the outer side; the lower rail is horizontally arranged on the wall below the blackboard, and the rail groove of the lower rail faces to the outer side;

the upper end and the lower end of the main shaft are respectively arranged in the upper rail and the lower rail in a sliding way through the connecting rolling mechanism; the connecting rolling mechanism comprises a connecting rod, a transverse wheel and a longitudinal wheel, the connecting rod is vertically arranged at the end part of the main shaft, the transverse wheel is vertically arranged on the connecting rod through a wheel shaft, the transverse wheel is attached to the first side wall of the track groove, and the longitudinal wheel is arranged at the end part of the connecting rod and is attached to the second side wall of the track groove;

the main shaft shell is arranged around the main shaft, the two ends of the main shaft shell are fixedly connected with the main shaft, a distance is arranged between the main shaft shell and the main shaft, a handle shell for arranging a handle is arranged on the main shaft shell in an outward protruding mode, a handle cover is arranged on the handle shell through a telescopic rod, one end of the telescopic rod is fixedly connected with the handle shell, and the other end of the telescopic rod is fixedly connected with the handle cover;

the handle is U-shaped, the handle is inserted into the handle shell, two ends of the handle are connected with a longitudinal rod, and the longitudinal rod is arranged in the interval between the main shaft shell and the main shaft;

the section of the plate brush frame is arc-shaped, the plate brush frame is parallel to the main shaft, the inner cambered surface of the plate brush frame points to the main shaft, and the length of the plate brush frame is equal to the width of the blackboard; the scrubbing brush frame is connected with the main shaft shell through at least one connecting component; the connecting component comprises a cross rod, a pressure spring and a sleeve, wherein the sleeve is vertically arranged on the outer side surface of the main shaft shell, the sleeve points to the plate brush holder, the cross rod is inserted into the sleeve, one end of the cross rod is fixedly connected with the longitudinal rod, the other end of the cross rod is fixedly connected with the inner cambered surface of the plate brush holder, the pressure spring is sleeved on the cross rod, one end of the pressure spring is connected with the plate brush holder, and the other end of the pressure spring is connected with the sleeve; a sponge scrubbing brush is arranged on the outer cambered surface of the scrubbing brush frame along the length direction of the scrubbing brush frame;

the dust collection box sets up the bottom of main shaft and dust collection box is located board brush yoke and is used for collecting powder ash under.

Preferably, both ends of the upper rail and the lower rail extend out of the blackboard.

Preferably, both ends of the upper rail and the lower rail extend out of the blackboard for 20cm. By the design of the technical characteristics, the device can be placed on two sides of the blackboard without occupying the using area of the blackboard, and the utilization space is maximized.

Preferably, the blackboard eraser device further comprises two dust baffles which are symmetrically arranged on two side edges of the blackboard brush frame along the length direction of the blackboard brush frame respectively, and the bottom ends of the two dust baffles are connected with the dust collecting box. The dust baffle can completely block dust generated by erasing the blackboard in the dust baffle when the device moves, and the baffle is connected with the dust collecting box.

Compared with the prior art, the invention has the beneficial effects that:

1. the blackboard eraser device makes it easy to erase and clean the blackboard.

2. The blackboard eraser device can erase a blackboard in a selectable area.

3. The blackboard eraser device also solves the problem that dust flies in classrooms in a scattered way caused by a common blackboard erasing mode.

4. The blackboard eraser device can detach and clean the blackboard brush frame and the sponge brush.

5. The blackboard eraser device fully utilizes the space and does not occupy the using area of a blackboard.

6. The blackboard eraser device changes the labor and time consumption of the traditional manual blackboard erasing into the device for erasing the blackboard, thereby saving labor and time.

7. The blackboard eraser device is characterized in that the blackboard eraser frame is designed to be arc-shaped and closely attached to a blackboard, and the most suitable angle for erasing the blackboard can be adjusted.

8. The blackboard eraser device is reasonable in design, richer in function and convenient to detach, and is suitable for creating a good learning environment in classrooms of various schools.

Drawings

Fig. 1 is a schematic structural view of a blackboard eraser device.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a schematic view of the mounting positions of the garbage can and the pull rod, and the spring.

Detailed Description

The technical scheme of the present invention is described in detail below, but the scope of the present invention is not limited to the embodiments.

In order to make the contents of the present invention more comprehensible, the present invention is further described with reference to fig. 1 to 3 and the detailed description below.

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Examples:

as shown in fig. 1, the blackboard eraser device of the present embodiment includes an upper rail 1, a lower rail 18, a main shaft 2, a main shaft housing 3, a scrubber frame 4, a handle housing 6, a handle 20, and a dust collection box 9.

As shown in fig. 1, the upper rail 1 is horizontally arranged on a wall above the blackboard 12, and a rail groove of the upper rail 1 faces to the outer side; the lower rail 18 is horizontally disposed on the wall below the blackboard 12, and the rail groove of the lower rail 18 faces outward. The blackboard eraser mainly uses two upper and lower rails, namely an upper rail 1 and a lower rail 18, to move left and right.

As shown in fig. 2, the main shaft 2 is connected to upper and lower rails and supports the entire apparatus. The upper and lower ends of the main shaft 2 are respectively arranged in the upper rail 1 and the lower rail 18 in a sliding way through a connecting rolling mechanism; the connecting rolling mechanism comprises a connecting rod 19, a transverse wheel 16 and a longitudinal wheel 17, wherein the connecting rod 19 is vertically arranged at the end part of the main shaft 2, the transverse wheel 16 is vertically arranged on the connecting rod 19 through a wheel shaft, the transverse wheel 16 is attached to the first side wall of the track groove, and the longitudinal wheel 17 is arranged at the end part of the connecting rod 19 and is attached to the second side wall of the track groove. The transverse wheels 16 on the upper rail 1 in the embodiment mainly eliminate the friction force received by the longitudinal wheels 17, and the longitudinal wheels mainly play a role of pulling the device to move the blackboard erasing device left and right, as well as the lower rail 18. The wheels on the upper side and the lower side are connected with a main shaft 2, and the main shaft is positioned on the front surface of the blackboard, so that the parts are connected and play a role of matching with a wheel driving device.

As shown in fig. 1, 2 and 3, in the present embodiment, the main shaft housing 3 mainly functions to connect the handle 20 and the scrubber frame 4. The main shaft housing 3 sets up around main shaft 2, and main shaft 2 is all linked firmly at main shaft housing 3's both ends, sets up the interval between main shaft housing 3 and the main shaft 2, and the evagination sets up the handle shell 6 that is used for setting up handle 20 on main shaft housing 3, sets up handle lid 11 through telescopic link 7 on handle shell 6, and telescopic link 7's one end links firmly handle shell 6, and telescopic link 7's the other end links firmly handle lid 11.

As shown in fig. 3, the handle 20 is in a U shape, the handle 20 is inserted into the handle housing 6, two ends of the handle 20 are connected with a vertical rod 15, and the vertical rod 15 is arranged in the interval between the spindle housing 3 and the spindle 2.

In this embodiment, the handle 20 is connected to the vertical rod 15 in the spindle housing 3, the vertical rod 15 is connected to the horizontal rod 13 in the spindle housing, and the horizontal rod 13 is connected to the brush board 4, so that the three components form a system. When the handle 20 is held by hand, the handle cover 11 on the handle is pressed by force, the handle cover 11 compresses the telescopic rod 7, the telescopic rod 7 shortens and pulls the longitudinal rod 15 towards the handle 20 so as to drive the cross rod 13, the cross rod 13 is connected with the blackboard brush frame 4, so that the blackboard brush frame 4 is pulled to leave the blackboard 12, a gap exists between the blackboard brush frame 4 and the blackboard 12, and when a blackboard writing which cannot be brushed off is encountered, the blackboard can be skipped, so that the blackboard erasing function of the blackboard area can be selected; the function of this system is to erase the blackboard in a selectable area.

As shown in fig. 1, the section of the scrubber frame 4 is arc-shaped, the scrubber frame 4 is arranged parallel to the main shaft 2, and the intrados of the scrubber frame 4 points to the main shaft 2, and the length of the scrubber frame 4 is equal to the width of the blackboard; the brush board frame 4 is connected with the main shaft housing 3 through at least one connecting component 10; this embodiment is illustrated with three connection assemblies 10 as an example.

As shown in fig. 2 and 3, the connecting assembly 10 comprises a cross rod 13, a pressure spring 21 and a sleeve 22, wherein the sleeve 22 is vertically arranged on the outer side surface of the main shaft housing 3, the sleeve 22 points to the plate brush holder 4, the cross rod 13 is inserted into the sleeve 22, one end of the cross rod 13 is fixedly connected with the longitudinal rod 15, the other end of the cross rod 13 is fixedly connected with the intrados of the plate brush holder 4, the pressure spring 21 is sleeved on the cross rod 13, one end of the pressure spring 21 is connected with the plate brush holder 4, and the other end of the pressure spring 21 is connected with the sleeve 22; a sponge scrubber is arranged on the outer cambered surface of the scrubber frame 4 along the length direction of the scrubber frame 4. The sponge scrubbing brush is clamped on the outer cambered surface of the scrubbing brush holder 4 through a buckle. The sponge scrubbing brush and the scrubbing brush frame 4 can be simply disassembled and cleaned.

In this embodiment, when the handle cover 11 does not apply a force, the compression spring 21 is in a stretched state to tightly attach the brush holder 4 to the surface of the blackboard 12, when the handle 20 is gripped and the handle cover 11 applies a force, the handle cover 11 compresses the telescopic rod 7, the telescopic rod 7 shortens and pulls the vertical rod 15 toward the handle 20 to drive the cross rod 13, and the cross rod 13 is connected with the brush holder 4, so that the brush holder 4 is pulled away from the blackboard 12, and a gap exists between the brush holder 4 and the blackboard 12. However, when no force is applied to the handle cover 11, the compression spring 21 is stretched, and the brush holder 4 is attached to the surface of the blackboard 12.

As shown in fig. 1 and 2, a dust collection box 9 is provided at the bottom end of the main shaft 2 and the dust collection box 9 is located directly below the board brush holder 4 for collecting soot.

Both ends of the upper rail 1 and the lower rail 18 in this embodiment extend out of the blackboard 12, and both ends of the upper rail 1 and the lower rail 18 extend out of the end 20cm of the blackboard 12. By the design of the technical characteristics, the device can be placed on two sides of the blackboard without occupying the using area of the blackboard, and the utilization space is maximized.

The blackboard eraser device further comprises two dust baffles 5, the two dust baffles 5 are symmetrically arranged on two side edges of the blackboard brush frame 4 along the length direction of the blackboard brush frame 4, and the bottom ends of the two dust baffles 5 are connected with a dust collecting box 9. The dust baffle can completely block dust generated by erasing the blackboard in the dust baffle when the device moves, and the baffle is connected with the dust collecting box.

When the whole blackboard writing is required to be wiped, the blackboard can be easily wiped by holding the handle shell 6 to pull the whole blackboard writing left and right, and when the blackboard is required to be cleaned, the sponge blackboard brush on the blackboard brush frame can be taken down, soaked with water and then sleeved, and then the blackboard can be cleaned by pulling the blackboard left and right.

When a blackboard writing which cannot be brushed is met, the handle 20 is held by hand, the handle cover 11 on the handle is pressed by force, the handle cover 11 compresses the telescopic rod 7, the telescopic rod 7 shortens to pull the longitudinal rod 15 towards the handle 20 so as to drive the cross rod 13, the cross rod 13 is connected with the blackboard brush frame 4, so that the blackboard brush frame 4 is pulled to leave the blackboard 12, a gap exists between the blackboard brush frame 4 and the blackboard 12, and the blackboard can be skipped, so that a function of selecting a blackboard area to wipe a blackboard is achieved.

The invention is not related in part to the same as or can be practiced with the prior art.

As described above, although the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limiting the invention itself. Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The blackboard eraser device is characterized by comprising an upper rail (1), a lower rail (18), a main shaft (2), a main shaft shell (3), a blackboard brush frame (4), a handle shell (6), a handle (20) and a dust collecting box (9),

the upper rail (1) is horizontally arranged on a wall body above the blackboard (12), and a rail groove of the upper rail (1) faces to the outer side; the lower rail (18) is horizontally arranged on the wall below the blackboard (12), and a rail groove of the lower rail (18) faces to the outer side;

the upper end and the lower end of the main shaft (2) are respectively arranged in the upper rail (1) and the lower rail (18) in a sliding way through a connecting rolling mechanism; the connecting rolling mechanism comprises a connecting rod (19), a transverse wheel (16) and a longitudinal wheel (17), wherein the connecting rod (19) is vertically arranged at the end part of the main shaft (2), the transverse wheel (16) is vertically arranged on the connecting rod (19) through a wheel shaft, the transverse wheel (16) is attached to the first side wall of the track groove, and the longitudinal wheel (17) is arranged at the end part of the connecting rod (19) and is attached to the second side wall of the track groove;

the main shaft shell (3) is arranged around the main shaft (2), the two ends of the main shaft shell (3) are fixedly connected with the main shaft (2), a distance is arranged between the main shaft shell (3) and the main shaft (2), a handle shell (6) for arranging a handle (20) is arranged on the main shaft shell (3) in a protruding mode, a handle cover (11) is arranged on the handle shell (6) through a telescopic rod (7), one end of the telescopic rod (7) is fixedly connected with the handle shell (6), and the other end of the telescopic rod (7) is fixedly connected with the handle cover (11);

the handle (20) is U-shaped, the handle (20) is inserted into the handle shell (6), two ends of the handle (20) are connected with a longitudinal rod (15), and the longitudinal rod (15) is arranged in the interval between the main shaft shell (3) and the main shaft (2);

the section of the plate brush frame (4) is arc-shaped, the plate brush frame (4) is parallel to the main shaft (2), the inner cambered surface of the plate brush frame (4) points to the main shaft (2), and the length of the plate brush frame (4) is equal to the width of the blackboard; the plate brush frame (4) is connected with the main shaft shell (3) through at least one connecting component (10); the connecting assembly (10) comprises a cross rod (13), a pressure spring (21) and a sleeve (22), wherein the sleeve (22) is vertically arranged on the outer side face of the main shaft shell (3) and the sleeve (22) points to the plate brush holder (4), the cross rod (13) is inserted into the sleeve (22), one end of the cross rod (13) is fixedly connected with the longitudinal rod (15), the other end of the cross rod (13) is fixedly connected with the inner cambered surface of the plate brush holder (4), the pressure spring (21) is sleeved on the cross rod (13), one end of the pressure spring (21) is connected with the plate brush holder (4), and the other end of the pressure spring (21) is connected with the sleeve (22); a sponge scrubbing brush is arranged on the outer cambered surface of the scrubbing brush frame (4) along the length direction of the scrubbing brush frame (4);

the dust collection box (9) is arranged at the bottom end of the main shaft (2), and the dust collection box (9) is positioned under the plate brush frame (4) and used for collecting powder ash.

2. Blackboard eraser device according to claim 1, characterised in that the upper rail (1) and the lower rail (18) extend from the blackboard (12) at both ends.

3. Blackboard eraser device according to claim 1, characterised in that the upper rail (1) and the lower rail (18) extend 20cm beyond the blackboard (12) at both ends.

4. The blackboard eraser device according to claim 1, characterized in that the blackboard eraser device further comprises two dust baffles (5), the two dust baffles (5) are symmetrically arranged on two side edges of the blackboard brush frame (4) along the length direction of the blackboard brush frame (4), and the bottom ends of the two dust baffles (5) are connected with the dust collecting box (9).