CN209987647U - A dry dust-free blackboard eraser - Google Patents

Abstract

The utility model discloses a dry-type dust-free blackboard eraser, which comprises a blackboard body, wherein the bottom of the blackboard body is outwards turned to form a bent part, and the dry-type dust-free blackboard eraser also comprises a track, a translation device, a dust suction device, a wiping device and a dust suction pipe, wherein the track is arranged on the lower surface of the bent part, the translation device is in rolling connection with the track, the dust suction device is arranged on the translation device, the dust suction device moves along the track along with the translation device, one end of the dust suction pipe is connected with the dust suction device, and the other end of the; the track is C shaped steel with two closed ends and is fixedly connected with the bending part through a fastener, the translation device comprises a sliding trolley and a bottom plate, two groups of rollers are fixedly connected with two sides of the sliding trolley, the rollers are supported by the bottom edge of the groove cavity of the track, and the rollers are connected to the track in a rolling manner. The utility model discloses a chalk dust that dust extraction absorption blackboard eraser produced when using for chalk dust is collected in dust extraction's dust filter bag, reduces the chalk dust and flies upward, reduces environmental pollution, the protection health.

Description

A dry dust-free blackboard eraser

technical field

The utility model relates to the technical field of teaching aids, in particular to a dry type dust-free blackboard eraser.

Background technique

In the daily learning process, the blackboard and the blackboard eraser are indispensable teaching tools. The ordinary blackboard eraser is made of substrate and felt fibers. When the ordinary blackboard eraser is used to erase the chalk words on the blackboard, it is easy to make the chalk gray with the blackboard. The movement of rubbing is flying everywhere in the air. The main harm of chalk dust is the harm to the respiratory system, and it is a particularly serious harm. You must know that when the powder is inhaled, it will undoubtedly stimulate the respiratory system and induce some symptoms such as rhinitis, chronic Pharyngitis, bronchitis and other respiratory system inflammations, and when dust enters the lungs, most of them will accumulate in the lungs, which will reduce the ventilation function of the lungs over time, thereby causing some more serious diseases, such as pneumonia, pneumoconiosis, Lung cancer and other diseases will greatly increase the risk of disease.

Therefore, it is necessary to invent a dry type dust-free blackboard eraser to solve the above problems.

Utility model content

The purpose of the present utility model is to provide a dry type dust-free blackboard eraser, which can absorb the chalk dust generated when the blackboard eraser is used by a dust-absorbing device, so as to solve the problems raised in the above-mentioned background technology.

To achieve the above object, the utility model provides the following technical solutions:

A dry dust-free blackboard eraser comprises a blackboard body, the bottom of the blackboard body is folded outwards to form a bending part, and also includes a rail, a translation device, a dust suction device, a wiping device and a dust suction pipe, the rail is arranged in the folding On the lower surface of the curved part, the translation device and the track are connected in a rolling manner. The vacuum cleaner is arranged on the translation device. The vacuum device moves along the track with the translation device. Wipe device connection.

A further improvement scheme of the present utility model is that the rail is a C-shaped steel with closed ends, and is fixedly connected to the bending part through fasteners; The roller is supported by the bottom edge of the groove cavity of the track, and the roller is connected to the track in a rolling manner.

A further improvement scheme of the present utility model is that the dust suction device includes a casing, a first motor and a dust filter bag, the casing is fixedly connected to the bottom plate by fasteners, a fan blade is installed on the output shaft of the first motor, and the first motor is provided with a fan blade. A motor is fixed at the air outlet at the bottom end of the casing, and the air outlet extends through the bottom plate to the lower part of the bottom plate, the dust filter bag is fixed inside the casing at the upper end of the first motor, and the casing on the upper part of the dust filter bag is provided with air inlet A and Air inlet B, there is a storage slot at the upper mouth of the air inlet B, and a second switch is installed on the bottom surface of the storage slot. In addition, a detachable cover can also be installed at the air inlet B to ensure that the vacuum cleaner is in use. enough pressure.

A further improvement scheme of the present invention is that the wiping device includes a base plate and a cover, the base plate and the cover are both made of insulating materials, the two opposite surfaces of the base plate are respectively fixed with a felt and a vibration mechanism, and the longitudinal section of the cover is C. The bottom of the cover is provided with a dust suction port, and the inner side of the cover surrounds the base plate. The surface of the base plate with the felt is exposed on the outside of the cover. The surface of the base plate with the vibration mechanism is connected to the cover through a spring. The spring A group of iron stabilizer bars are fixed on the inner sides of the two ends, and two contacts are fixed on the opposite surfaces of one group of stabilizer bars, and the group of stabilizer bars and the spring together form a first switch.

A further improvement scheme of the present invention is that one end of the dust suction pipe is connected to the dust suction port, and the other end is connected to the air inlet A through the automatic telescopic air pipe reel fixed on the bottom plate.

A further improvement scheme of the present invention is that the distance dimension between the two contacts of the first switch is smaller than the length dimension of the felt exposed outside the cover.

A further improvement scheme of the present invention is that the size of the cover is smaller than the size of the storage slot and larger than the size of the air inlet B.

A further improvement scheme of the present invention is that the size of the base plate is smaller than the size of the air inlet B.

A further improvement scheme of the present invention is that the vibration mechanism includes a second motor and an eccentric shaft block vibrator fixed on the output shaft of the second motor.

A further improvement scheme of the present utility model is that the first switch, the first motor and the second motor are connected to the power source through wires, the second switch and the second motor are connected to the power source through wires, and one end of the wires is fixed on the automatic retractable cable reel A fixing mechanism can be installed at the connection between the wire and the second motor to prevent the wire from falling off under the pulling of the automatic retractable cable reel.

The beneficial effects of the present utility model:

1. The chalk dust generated when the blackboard eraser is used is absorbed by the vacuuming device, so that the chalk dust is collected in the dust filter bag of the vacuuming device, which reduces the flying of chalk dust, reduces environmental pollution and protects human health.

2. After the blackboard eraser is used for a period of time, chalk dust will gradually accumulate in the gaps of the felt. When the accumulation reaches a certain level, a white film will be left. Through the vibration mechanism installed on the blackboard eraser, these accumulated chalk The ash is beaten out and sucked by a vacuum cleaner to ensure a good wiping effect of the blackboard eraser.

3. After the blackboard eraser is used once, put it in the storage slot to further absorb the chalk dust to ensure that the blackboard eraser has a good wiping effect in the next use.

4. The vacuum tube and the wire are respectively reeled by the automatic retractable trachea reel and the automatic retractable cable reel, which prevents the wires and the vacuum tube from being tangled and disorderly, and is convenient and beautiful to use.

5. The whole device moves left and right under the blackboard body along the track, which saves time and effort when using.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention.

FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1 .

3 is a schematic structural diagram of the wiping device of the present invention.

Fig. 4 is the working circuit diagram of the electrical components in the utility model.

In the picture: 1-Blackboard body, 2-Bending part, 3-Track, 4-Dust pipe, 5-Sliding trolley, 6-Bottom plate, 7-Roller, 8-Link, 9-Housing, 10-Section 10 A motor, 11-dust filter bag, 12-air outlet, 13-air inlet A, 14-air inlet B, 15- storage slot, 16-second switch, 17-substrate, 18-cover, 19-felt, 20 -Vibration mechanism, 21-Dust suction port, 22-Spring, 23-Stabilizer bar, 24-Contact, 25-First switch, 26-Auto retractable trachea reel, 27-Auto retractable cable reel, 28-Conductor.

Detailed ways

Below in conjunction with the accompanying drawings and specific embodiments, the present utility model will be further clarified. It should be understood that the following specific embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. The modifications made by personnel to various equivalent forms of the utility model all fall within the scope defined by the appended claims of the present application.

Embodiment 1: a dry type dust-free blackboard eraser as shown in Figures 1 to 4, including a blackboard body 1, the bottom of the blackboard body 1 is folded outward to form a bending portion 2, and the bending portion is provided with several The threaded hole also includes a rail 3, a translation device, a dust suction device, a wiping device and a dust suction pipe 4. The rail 3 is provided on the lower surface of the bending part 2, and the translation device and the rail 3 are rollingly connected. It is arranged on the translation device, the dust suction device moves along the track 3 along with the translation device, one end of the dust suction pipe 4 is connected with the dust suction device, and the other end is connected with the wiping device.

The track 3 is a C-shaped steel with closed ends, and is fixedly connected to the bending part by bolts. The translation device includes a sliding trolley 5 and a bottom plate 6. Two sets of rollers 7 are fixedly connected on both sides of the sliding trolley 5. The grooves of the track 3 The bottom edge of the cavity supports the roller 7, and the roller 7 is connected to the track 3 in a rolling manner. The diameter of the roller 7 should be smaller than the height of the groove cavity of the track 3 to ensure that the roller 7 can roll freely in the track 3. One end of the bottom plate 6 passes through the connecting rod 8 Connected to the sliding trolley 5 , the top end of the connecting rod 8 is welded to the bottom of the sliding trolley 5 , one end of the bottom plate 6 is welded to the bottom end of the connecting rod 8 , and the other end extends away from the blackboard body 1 .

The dust suction device includes a housing 9, a first motor 10 and a dust filter bag 11. The housing 9 is fixedly connected to the bottom plate 6 by fasteners, and a fan blade is installed on the output shaft of the first motor 10. The first motor 10 It is fixed at the air outlet 12 at the bottom end of the casing 9, and the air outlet 12 extends through the bottom plate 6 to the lower part of the bottom plate 6. The dust filter bag 11 is fixed inside the casing 9 at the upper end of the first motor 10. The dust filter bag 11 is made of gauze, A composite filter screen structure composed of sponge and HEPA filter paper, an air inlet A13 and an air inlet B14 are arranged on the shell 9 on the upper part of the dust filter bag 11, and a storage slot 15 is arranged at the upper mouth of the air inlet B14, and the bottom surface of the storage slot 15 is installed There is a second switch 16, and the second switch 16 adopts a push-type spring 22 switch.

The wiping device includes a base plate 17 and a cover 18. Both the base plate 17 and the cover 18 are made of epoxy resin boards. The outer wall of the cover 18 can be covered with a layer of rubber to further improve the insulation effect. The two opposite surfaces of the base plate 17 are respectively The felt 19 and the vibration mechanism 20 are fixed, the longitudinal section of the cover 18 is C-shaped, the bottom of the cover 18 is provided with a dust suction port 21, and the inner side of the cover 18 surrounds the base plate 17, and the base plate 17 is fixed with the felt 19. This surface is exposed on the outside of the cover 18. The surface of the base plate 17 on which the vibration mechanism 20 is fixed is connected to the cover 18 through a spring 22. A set of iron stabilizer bars 23 are fixed on the inner sides of both ends of the spring 22. Two contacts 24 are fixed on the opposite surface, and the group of stabilizer bars 23 and the spring 22 together constitute the first switch 25 .

One end of the dust suction pipe 4 is connected to the dust suction port 21 , and the other end is connected to the air inlet A13 through the automatic telescopic air pipe reel 26 fixed on the bottom plate 6 .

The distance dimension between the two contacts 24 of the first switch 25 is smaller than the length dimension of the felt 19 exposed outside the cover 18 .

The size of the cover 18 is smaller than the size of the storage slot 15 and larger than the size of the air inlet B14.

The size of the base plate 17 is smaller than that of the air inlet B14.

The vibration mechanism 20 includes a second motor and an eccentric shaft block vibrator fixed on the output shaft of the second motor.

The first switch 25 , the first motor 10 , and the second motor are connected to the power source through a wire 28 , the second switch 16 and the second motor are connected to the power source through a wire 28 , and one end of the wire 28 is fixed on the automatic retractable cable reel 27 .

The working principle of the present utility model is as follows: Before use, the dust collector is always at one end of the track 3 due to the pulling force of the automatic retractable cable reel 27 . When in use, the power supply is connected, and the user removes the wiping device and presses it in the direction of the blackboard body 1 Cover the cover 18 and wipe the blackboard body 1 through the felt 19. The contact between the two contacts 24 of the first switch 25 makes the first switch 25 close, and the first motor 10 and the second motor rotate, that is, the dust collector and the vibration mechanism 20 work simultaneously. , because the distance between the two contacts 24 of the first switch 25 is smaller than the length dimension of the felt 19 exposed on the outside of the cover 18, it can ensure that when the blackboard is wiped, the cover 18 does not interfere with the blackboard body 1, and the wipe The chalk dust generated during the blackboard is sucked into the dust filter bag 11 by the vacuum cleaner, and the vibration mechanism 20 works at the same time to beat out the chalk dust accumulated in the felt 19 and suck it up by the vacuum cleaner, and can also follow the track 3 as required. Pull the cleaning device so that the wiping device covers the entire blackboard body 1; after wiping is completed, the wiping device is separated from the blackboard body 1, due to the tension of the spring 22, the first switch 25 is turned off, and the first motor 10 and the second motor stop rotating , that is, the cleaning device and the vibration mechanism 20 stop working, and the user places the wiping device at the storage slot 15. Since the size of the cover 18 is smaller than that of the storage slot 15 and larger than the size of the air inlet B14, the size of the base plate 17 It is smaller than the size of the air inlet B14, so as to ensure that the felt 19 falls into the air inlet B14, and the cover 18 falls into the storage slot 15. Press down and the user presses the cover 18 downward, and the cover 18 Push the second switch 16 to close, and the first motor 10 rotates, that is, the vacuuming device works to suck away the chalk dust on the surface of the felt 19, so as to ensure that the blackboard eraser has a good wiping effect in the next use; The wiping device is taken out from the middle, the suction tube 4 is retracted to the automatic retractable air tube reel 26, the wire 28 is retracted into the automatic retractable cable reel 27, and the vacuum device returns along the track 3 along with the translation device.

Claims (6)

1. The utility model provides a dustless blackboard eraser of dry-type, includes blackboard body (1), the bottom of blackboard body (1) is to turning over outward and turning over a formation portion of bending (2), its characterized in that: the bending device comprises a bending part (2), and is characterized by further comprising a rail (3), a translation device, a dust collection device, a wiping device and a dust collection pipe (4), wherein the rail (3) is arranged on the lower surface of the bending part (2), the translation device is in rolling connection with the rail (3), the dust collection device is arranged on the translation device, the dust collection device moves along the rail (3) along with the translation device, one end of the dust collection pipe (4) is connected with the dust collection device, and the other end of the dust collection pipe is connected with the wiping; the blackboard comprises a blackboard body (1), a rail (3) and a translation device, wherein the rail (3) is C-shaped steel with two closed ends and is fixedly connected with a bent part through a fastener, the translation device comprises a sliding trolley (5) and a bottom plate (6), two groups of rollers (7) are fixedly connected to two sides of the sliding trolley (5), the rollers (7) are supported by the bottom edge of a groove cavity of the rail (3), the rollers (7) are connected to the rail (3) in a rolling manner, one end of the bottom plate (6) is connected with the sliding trolley (5) through a connecting rod (8), and the other end of the bottom plate extends; the dust collection device comprises a shell (9), a first motor (10) and a dust filter bag (11), the shell (9) is fixedly connected onto a bottom plate (6) through a fastener, fan blades are installed on an output shaft of the first motor (10), the first motor (10) is fixed at an air outlet (12) at the bottom end inside the shell (9), the air outlet (12) penetrates through the bottom plate (6) and extends to the lower part of the bottom plate (6), the dust filter bag (11) is fixed inside the shell (9) at the upper end of the first motor (10), an air inlet A (13) and an air inlet B (14) are arranged on the shell (9) at the upper part of the dust filter bag (11), an object placing groove (15) is arranged at the upper opening of the air inlet B (14), and a second switch (16) is installed on the bottom surface of the object placing; the wiping device comprises a substrate (17) and a cover cap (18), wherein the substrate (17) and the cover cap (18) are made of insulating materials, two opposite surfaces of the substrate (17) are respectively fixed with a felt (19) and a vibrating mechanism (20), the longitudinal section of the cross section of the cover cap (18) is C-shaped, the bottom of the cover cap (18) is provided with a dust suction port (21), the inner side surface of the cover cap (18) surrounds the substrate (17), the surface of the substrate (17) fixed with the felt (19) is exposed outside the cover cap (18), the surface of the substrate (17) fixed with the vibrating mechanism (20) is connected with the cover cap (18) through a spring (22), the inner sides of two ends of the spring (22) are fixed with a group of iron stabilizer bars (23), two contacts (24) are fixed on the opposite surfaces of one group of stabilizer bars (23), the group of stabilizer bars (23) and the spring (22) form a first switch (25); one end of the dust suction pipe (4) is connected with the dust suction port (21), and the other end of the dust suction pipe is connected with the air inlet A (13) through an automatic telescopic air pipe scroll (26) fixed on the bottom plate (6).

2. A dry type dust-free blackboard eraser according to claim 1, wherein: the distance between two contacts (24) of the first switch (25) is smaller than the length of the felt (19) exposed outside the cover (18).

3. A dry type dust-free blackboard eraser according to claim 1, wherein: the size of the cover (18) is smaller than that of the storage groove (15) and larger than that of the air inlet B (14).

4. A dry type dust-free blackboard eraser according to claim 1, wherein: the size of the base plate (17) is smaller than that of the air inlet B (14).

5. A dry type dust-free blackboard eraser according to claim 1, wherein: the vibration mechanism (20) comprises a second motor and an eccentric shaft block vibrator fixed on an output shaft of the second motor.

6. A dry type dust-free blackboard eraser according to claim 5, wherein: the first switch (25), the first motor (10) and the second motor are connected with a power supply through leads (28), the second switch (16) and the second motor are connected with the power supply through leads (28), and one end of each lead (28) is fixed on the automatic telescopic cable reel (27).

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