Electric chalk eraser capable of collecting dust

Abstract

The invention relates to the technical field of chalk erasers, and discloses an electric chalk eraser capable of collecting dust, which comprises a box body, the front surface of the box body is fixedly connected with a handle, the inside of the handle is fixedly connected with an electric push rod, the rear surface of the electric push rod is provided with a dismounting assembly, and the rear surface of the dismounting assembly is provided with an eraser. A dust collection assembly is arranged on the upper surface of the box body and comprises a first pipeline, a second pipeline is fixedly connected to the upper portion of the first pipeline, a third pipeline is fixedly installed on the rear surface of the second pipeline, and a fourth pipeline is arranged on the rear portion of the third pipeline. According to the blackboard cleaning device, the blackboard eraser is driven by the electric push rod to do reciprocating motion, the blackboard cleaning efficiency is remarkably improved, the blackboard cleaning device is particularly suitable for cleaning work of a large-area blackboard, and dust generated in the wiping process can be effectively collected and prevented from drifting into air through the matched design of the dust collection assembly and the feeding port.

Description

Technical Field

[0001] The present invention relates to the technical field of chalk erasers, and particularly to an electric chalk eraser capable of collecting dust. Background Art

[0002] In a traditional teaching environment, the blackboard is the main writing tool, and its cleaning usually relies on a manual eraser.

[0003] However, there are many deficiencies in the use of a manual eraser: First, the chalk dust generated during the wiping process is easily scattered into the air, which not only affects the air quality in the classroom but also may pose a hazard to the health of teachers and students; Second, the efficiency of manual wiping is relatively low, especially when facing a large-area blackboard, which requires more time and physical strength; In addition, the replacement and cleaning process of the eraser is relatively cumbersome, especially in the case of frequent use, and the maintenance cost is relatively high. Although there have been some attempts of electric erasers in the prior art, their dust collection effect is not good, and their structure is complex, making it difficult to achieve quick disassembly and maintenance. Summary of the Invention

[0004] To make up for the above deficiencies, the present invention provides an electric chalk eraser capable of collecting dust, aiming to improve the problem of "low working efficiency of the current chalk eraser" mentioned in the prior art.

[0005] To achieve the above object, the present invention adopts the following technical solution: An electric chalk eraser capable of collecting dust, including a box body, a handle is fixedly connected to the front surface of the box body, an electric push rod is fixedly connected to the inside of the handle, a disassembly and assembly component is arranged on the rear surface of the electric push rod, a chalk eraser is arranged on the rear surface of the disassembly and assembly component, a dust suction component is arranged on the upper surface of the box body, the dust suction component includes a first pipe, a second pipe is fixedly connected to the upper part of the first pipe, a third pipe is fixedly installed on the rear surface of the second pipe, a fourth pipe is arranged at the rear of the third pipe, a dust suction fan is arranged inside the fourth pipe, and a collection pipe is detachably arranged at the rear of the fourth pipe.

[0006] As a further description of the above technical solution:

[0007] A sealing component is arranged on the outer side of the box body, the first pipe penetrates and is fixedly connected to the upper part of the box body, a feeding component is arranged at the lower part of the box body, the disassembly and assembly component includes a rectangular block, the rectangular block is fixedly connected to the rear surface of the electric push rod, and vertical grooves are opened on both sides inside the rectangular block.

[0008] As a further description of the above technical solution:

[0009] A semi-circular groove is opened in the middle near both sides of the vertical grooves inside the rectangular block, sliding blocks are slidably connected to the inner walls of both vertical grooves, and a moving block is fixedly connected to the inner sides of both sliding blocks.

[0010] As a further description of the above technical solution:

[0011] An auxiliary ball is slidably connected to the inner wall of the moving block. The auxiliary ball and the moving block are elastically connected by a first spring. One end of the first spring is fixedly connected to the rear surface of the auxiliary ball, and the other end of the first spring is fixedly connected to the inner wall of the moving block. The moving block is fixedly connected to the front surface of the blackboard eraser.

[0012] As a further description of the above technical solution:

[0013] The closing assembly includes two groups of limiting grooves and a U-shaped baffle. The limiting grooves are opened on the outer surface of the box body. The U-shaped baffle is inserted into the inner wall of the limiting groove. A cover plate is fixedly connected to the upper part of the U-shaped baffle.

[0014] As a further description of the above technical solution:

[0015] The width of the cover plate is greater than the width of the U-shaped baffle. An installation block is fixedly connected to the rear surface of the U-shaped baffle. The two groups of U-shaped baffles are detachably installed by bolts.

[0016] As a further description of the above technical solution:

[0017] The feeding assembly includes a rubber pad. The rubber pad is fixedly installed on the lower surface of the box body. A plurality of feeding ports are opened on both sides of the bottom of the box body.

[0018] As a further description of the above technical solution:

[0019] The feeding port is set in a U shape, and the blackboard eraser is set to be elastic.

[0020] The present invention has the following beneficial effects:

[0021] 1. In the present invention, the blackboard eraser is driven by an electric push rod to perform reciprocating motion, significantly improving the efficiency of blackboard cleaning, especially suitable for cleaning large-area blackboards. At the same time, the cooperation design of the dust suction assembly and the feeding port can effectively collect the dust generated during the wiping process, avoid the dust from floating into the air, improve the air quality in the classroom, and reduce the potential harm to the health of teachers and students. And in the second embodiment, by setting the air suction mechanism, the dust can be adsorbed more accurately, improving the efficiency of the dust suction work.

[0022] 2. In the present invention, the quick disassembly and installation of the blackboard eraser are realized through the disassembly and assembly component, simplifying the replacement and cleaning process and reducing the maintenance cost. In addition, the design of the closing assembly not only enhances the dust suction effect, but also facilitates disassembly and cleaning, further improving the usability of the device and the feasibility of long-term maintenance.

[0023] 3. In the present invention, by providing auxiliary balls, the first spring, supporting balls, the second spring and other limiting and supporting structures, the stability of the eraser during the wiping process is ensured, preventing it from falling off or getting stuck. In addition, the rotating mechanism in the second embodiment further enhances the practicality of the eraser, enabling it to switch the use surface by rotation, extending the service life of the eraser, and reducing the usage cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 FIG. is a schematic perspective view of the overall device of an electric chalk eraser capable of collecting dust in the present invention;

[0025] Figure 2 FIG. is a schematic bottom perspective view of the overall device of an electric chalk eraser capable of collecting dust in the present invention;

[0026] Figure 3 FIG. is a schematic exploded perspective view of the box body and the U-shaped baffle of an electric chalk eraser capable of collecting dust in the present invention;

[0027] Figure 4 FIG. is a schematic exploded perspective view of the rectangular block and the moving block of an electric chalk eraser capable of collecting dust in the present invention;

[0028] Figure 5 FIG. is a schematic exploded perspective view of the fourth pipe, the third pipe and the collecting pipe of an electric chalk eraser capable of collecting dust in the present invention;

[0029] Figure 6 FIG. is a schematic bottom perspective view of the overall device of the second embodiment of an electric chalk eraser capable of collecting dust in the present invention;

[0030] Figure 7 FIG. is a schematic rear bottom perspective view of the overall device of the second embodiment of an electric chalk eraser capable of collecting dust in the present invention;

[0031] Figure 8 FIG. is a schematic exploded perspective view of the eraser and the ring of the second embodiment of an electric chalk eraser capable of collecting dust in the present invention.

[0032] LEGEND DESCRIPTION:

[0033] 1. Box body; 2. Handle; 32. Limit groove; 33. Cover plate; 34. U-shaped baffle; 35. Mounting block; 4. Electric push rod; 52. Collection pipe; 53. Pipe four; 54. Pipe three; 55. Pipe two; 56. Pipe one; 57. Dust suction fan; 6. Eraser; 71. Rubber pad; 72. Feed inlet; 81. Moving block; 82. Rectangular block; 83. Vertical groove; 84. Auxiliary ball; 85. Spring one; 86. Slide block; 87. Semi-circular groove; 1001. Support groove; 1002. Support ball; 1003. Spring two; 1004. Ring; 91. Dust suction pipe; 92. Extension pipe; 93. Sealing pipe; 94. Dust suction port. Detailed implementation manner

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1

[0036] Refer to Figure 1-3 , an embodiment provided by the present invention: an electric chalk eraser capable of collecting dust, including a box body 1, the box body 1 is the main body of the device, the front surface of the box body 1 is fixedly connected with a handle 2, the handle 2 is used for the user to hold and use, an electric push rod 4 is fixedly connected inside the handle 2, the electric push rod 4 is used for driving, so as to realize the reciprocating movement of the eraser 6, so as to realize the wiping work. Here, the electric push rod 4 is a prior art and can be realized by those skilled in the art, so no more description will be made in this case. The rear surface of the electric push rod 4 is provided with a disassembly and installation component for disassembling and installing the eraser 6, and the rear surface of the disassembly and installation component is provided with an eraser 6, the eraser 6 is used for wiping off the chalk words on the blackboard, the upper surface of the box body 1 is provided with a dust suction component, and the dust suction component cooperates with the eraser 6 and the feed inlet 72 to collect dust. The dust suction component includes a pipe one 56, the upper part of the pipe one 56 is fixedly connected with a pipe two 55, the rear surface of the pipe two 55 is fixedly installed with a pipe three 54, the rear part of the pipe three 54 is provided with a pipe four 53, and a dust suction fan 57 is arranged inside the pipe four 53. The dust suction fan 57 is electrically connected. This technology is a prior art and can be realized by those skilled in the art, so no more description will be made in this case. The rear part of the pipe four 53 is detachably provided with a collection pipe 52, and the adsorbed dust will enter the collection pipe 52 for convenient collection.

[0037] Refer to Figure 1 - Figure 3, a sealing component is arranged on the outer side of the box body 1. The sealing component mainly prevents dust from leaking out through the two feeding ports 72 during the wiping process, and also makes the inside of the box body 1 form a relatively sealed environment, increasing the dust suction effect of the dust suction fan 57. The first pipeline 56 penetrates and is fixedly connected to the upper part of the box body 1. A feeding component is arranged at the lower part of the box body 1. The disassembly and assembly component includes a rectangular block 82. The rectangular block 82 is fixedly connected to the rear surface of the electric push rod 4. Vertical grooves 83 are opened on both sides inside the rectangular block 82. Semi-circular grooves 87 are opened in the middle near the vertical grooves 83 on both sides inside the rectangular block 82. Sliders 86 are slidably connected to the inner walls of the two vertical grooves 83. The vertical grooves 83 are used to limit the movement track of the sliders 86, and they can only move vertically. A moving block 81 is fixedly connected to the inner sides of the two sliders 86.

[0038] Refer to Figure 1 and Figure 4 , an auxiliary ball 84 is slidably connected to the inner wall of the moving block 81. At most only half of the auxiliary ball 84 contacts the semi-circular groove 87, preventing it from being stuck in the semi-circular groove 87, and only playing a simple limiting role. And the position of the semi-circular groove 87 is close to the edge of the inner wall of the rectangular block 82, so that when the auxiliary ball 84 enters the semi-circular groove 87, it is the maximum moving distance and cannot move up any further. Thus, the eraser 6 is more stable during wiping and will not fall off. The auxiliary ball 84 and the moving block 81 are elastically connected by a first spring 85. One end of the first spring 85 is fixedly connected to the rear surface of the auxiliary ball 84, and the other end of the first spring 85 is fixedly connected to the inner wall of the moving block 81. The moving block 81 is fixedly connected to the front surface of the eraser 6.

[0039] Refer to Figure 2 - Figure 3 , the sealing component includes two groups of limiting grooves 32 and a U-shaped baffle 34. The limiting grooves 32 are opened on the outer surface of the box body 1. The U-shaped baffle 34 is inserted into the inner wall of the limiting groove 32. A cover plate 33 is fixedly connected to the upper part of the U-shaped baffle 34. The width of the cover plate 33 is greater than the width of the U-shaped baffle 34. An installation block 35 is fixedly connected to the rear surface of the U-shaped baffle 34. The two groups of U-shaped baffles 34 are detachably installed by bolts.

[0040] Refer to Figure 1 - Figure 3 , the feeding component includes a rubber pad 71. The rubber pad 71 is fixedly installed on the lower surface of the box body 1. A plurality of feeding ports 72 are opened on both sides of the bottom of the box body 1. The feeding ports 72 are U-shaped. The eraser 6 is elastic.

[0041] Working principle: When in use, first hold the handle 2 and press the entire box body 1 against the position on the blackboard that needs to be wiped with a small force. At this time, the rubber pad 71 is pressed and deformed, causing the U-shaped baffle 34 to fit against the blackboard. Also, since the eraser 6 is elastically arranged, when the box body 1 is pressed, the eraser 6 will also be pressed, thus squeezing the surface of the blackboard. Then, start the electric push rod 4. The electric push rod 4 drives the eraser 6 to move back and forth. At this time, the dust on the blackboard can be wiped off by the eraser 6, and the falling dust can be blocked by the set U-shaped baffle 34. At this time, start the dust suction fan 57. When the dust suction fan 57 is started, the chalk dust will be sucked into the collection pipe 52 by the dust suction fan 57 through the feed port 72, thus achieving the purpose of convenient collection.

[0042] After the wiping is completed, turn off the electric push rod 4 and the dust suction fan 57, and then rotate the collection pipe 52 to remove it, and then the dust in the collection pipe 52 can be processed;

[0043] When the eraser 6 needs to be replaced, directly pull the eraser 6 downward. When the eraser 6 moves downward, it will drive the moving block 81 to move. The moving block 81 drives the slider 86 to slide downward in the vertical groove 83 and slide it out of the vertical groove 83. When the auxiliary ball 84 is subjected to a downward force, it will move backward and squeeze the first spring 85 to slide out of the semi-circular groove 87. At this time, the eraser 6 can be removed for cleaning or replacement;

[0044] When the eraser 6 needs to be installed, first align the slider 86 with the position of the vertical groove 83 and move it upward. At this time, when the auxiliary ball 84 touches the inner wall of the rectangular block 82 and is subjected to pressure, it will move backward and squeeze the first spring 85. At this time, continue to move upward. When the auxiliary ball 84 touches the semi-circular groove 87, the reverse acting force of the first spring 85 causes the auxiliary ball 84 to be stuck in the semi-circular groove 87 to simply limit the auxiliary ball 84, thus preventing the eraser 6 from falling off during wiping;

[0045] When the U-shaped baffle 34 needs to be removed, only need to remove the bolts on the mounting block 35 to remove the two U-shaped baffles 34.

[0046] Embodiment 2

[0047] Refer to Figure 6 - Figure 8, on the basis of the first embodiment, the second embodiment adds a rotating mechanism. In the second embodiment, both the upper and lower surfaces of the eraser 6 can wipe the blackboard. The rotating mechanism is used to rotate the eraser 6, so that the blackboard can be wiped with different surfaces, extending the service life of the eraser 6 and eliminating the need for replacement in a short time. The rotating mechanism is arranged at the rear of the rectangular block 82. The rotating mechanism includes a circular ring 1004. The middle part of the eraser 6 is cylindrical, and the two ends remain unchanged, and its thickness is the same as that of the circular ring 1004. The same thickness increases the friction force, thereby increasing the stability of the eraser 6 during the wiping process. The right inner wall of the circular ring 1004 is slidably connected with a support ball 1002. The support ball 1002 will not slide out of the circular ring 1004. The circular ring 1004 and the support ball 1002 are elastically connected by a second spring 1003. The second spring 1003 plays a supporting role for the support ball 1002, and the reaction force of the second spring 1003 makes the support ball 1002 snap into the support groove 1001 for simple support. On the right inner wall of the eraser 6 near the middle part, there are two support grooves 1001, and the two support grooves 1001 are symmetrically arranged with respect to the horizontal center line of the eraser 6. When the support ball 1002 is replaced from the first support groove 1001 to the other support groove 1001, the eraser 6 also just changes its surface, so that the blackboard can be wiped with different surfaces. The support ball 1002 is adapted to the support groove 1001, and at most only half of the support ball 1002 can contact the support groove 1001 to prevent the support ball 1002 from being stuck in the support groove 1001. The circular ring 1004 is rotatably connected to the outer wall of the eraser 6, and the circular ring 1004 is fixedly installed on the rear surface of the rectangular block 82. When it is necessary to change the surface, directly rotate the eraser 6 so that the support ball 1002 slides out of the support groove 1001. When the support ball 1002 slides out of the support groove 1001, it will move backward and compress the second spring 1003. When the support ball 1002 contacts another support groove 1001, the reaction force of the second spring 1003 makes the support ball 1002 snap into the support groove 1001 for a simple limiting effect;

[0048] In addition, this embodiment also adds a suction mechanism. The suction mechanism is arranged inside the box body 1. The suction mechanism includes a sealing pipe 93. The sealing pipe 93 is fixedly installed at the bottom end of the first pipe 56 and is communicated with it. Suction pipes 91 are fixedly installed on both the left and right sides of the sealing pipe 93. One ends of the two suction pipes 91 close to each other are communicated with an extension pipe 92. A plurality of suction ports 94 are arranged on the rear surface of the extension pipe 92. The dust generated during the wiping process in the box body 1 can be adsorbed through the horizontally distributed suction ports 94. The positions where the suction pipes 91 face are exactly the positions of the plurality of feeding ports 72, so that the dust generated during use can be accurately and more efficiently sucked into the suction pipes 91 and finally enter the collecting pipe 52. In addition, the caliber of the suction ports 94 is small, making its adsorption force stronger and increasing the dust suction effect.

[0049] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An electric chalk eraser capable of collecting dust, comprising a box body (1), characterized in that: The front surface of the box body (1) is fixedly connected to a handle (2), the interior of the handle (2) is fixedly connected to an electric push rod (4), the rear surface of the electric push rod (4) is provided with a disassembly assembly component, the rear surface of the disassembly assembly component is provided with an eraser (6), the upper surface of the box body (1) is provided with a dust collection component, the dust collection component includes a pipe one (56), the upper part of the pipe one (56) is fixedly connected to a pipe two (55), the rear surface of the pipe two (55) is fixedly installed with a pipe three (54), the rear part of the pipe three (54) is provided with a pipe four (53), the interior of the pipe four (53) is provided with a dust collection fan (57), and the rear part of the pipe four (53) is detachably provided with a collection pipe (52).

2. The electric chalk eraser capable of collecting dust according to claim 1, characterized in that: A sealing component is arranged on the outer side of the box body (1), the pipe 1 (56) passes through and is fixedly connected to the upper part of the box body (1), a feeding component is arranged on the lower part of the box body (1), and the disassembly and assembly component comprises a rectangular block (82), the rectangular block (82) is fixedly connected to the rear surface of the electric push rod (4), and vertical grooves (83) are opened on both sides of the interior of the rectangular block (82).

3. The electric chalk eraser capable of collecting dust according to claim 2, characterized in that: A semicircular groove (87) is provided in the middle of the vertical grooves (83) on both sides of the rectangular block (82), the inner walls of the two vertical grooves (83) are slidably connected with sliders (86), and the inner sides of the two sliders (86) are fixedly connected with moving blocks (81).

4. The electric chalk eraser capable of collecting dust according to claim 3, characterized in that: The inner wall of the moving block (81) is slidably connected with an auxiliary ball (84), the auxiliary ball (84) and the moving block (81) are elastically connected via a spring (85), one end of the spring (85) is fixedly connected to the rear surface of the auxiliary ball (84), the other end of the spring (85) is fixedly connected to the inner wall of the moving block (81), and the moving block (81) is fixedly connected to the front surface of the eraser (6).

5. The electric chalk eraser capable of collecting dust according to claim 2, characterized in that: The sealing component comprises two groups of limiting grooves (32) and a U-shaped baffle (34); the limiting grooves (32) are formed on the outer surface of the box body (1); the U-shaped baffle (34) is inserted into the inner wall of the limiting groove (32); and the upper part of the U-shaped baffle (34) is fixedly connected to a cover plate (33).

6. The electric chalk eraser capable of collecting dust according to claim 5, characterized in that: The width of the cover plate (33) is greater than the width of the U-shaped baffle (34); a mounting block (35) is fixedly connected to the rear surface of the U-shaped baffle (34); and two groups of the U-shaped baffles (34) are detachably mounted by bolts.

7. The electric chalk eraser capable of collecting dust according to claim 2, characterized in that: The feed assembly comprises a rubber pad (71), the rubber pad (71) being fixedly mounted on the lower surface of the box body (1), and a plurality of feed openings (72) are provided on both sides of the bottom of the box body (1).

8. The electric chalk eraser capable of collecting dust according to claim 7, characterized in that: The feed inlet (72) is configured to be U-shaped, and the eraser (6) is configured to be elastic.

9. A method for using an electric chalk eraser capable of collecting dust according to any one of claims 1 to 7, comprising the following steps: S1: Preparation: Ensure that the power supply of the electric chalk eraser is connected and the device is in standby mode, check whether the eraser (6) is firmly installed and can perform the wiping work normally, and ensure that the collection tube (52) is correctly installed and there is no blockage inside. S2: Start using: Hold the handle (2), gently press the front end of the box body (1) on the area of ​​the blackboard that needs to be wiped, start the electric push rod (4), the electric push rod (4) will drive the eraser (6) to move back and forth, start wiping the chalk words on the blackboard, and at the same time start the dust suction fan (57), and suck the dust generated during the wiping process into the collection pipe (52) through the feed port (72) and the dust suction component. S3: Wiping process: During the wiping process, gently move the box body (1) as needed to ensure that all areas that need to be cleaned are covered. S4: Wiping is completed: After wiping is completed, the electric push rod (4) is first turned off to stop the movement of the eraser (6), and then the dust suction fan (57) is turned off to stop the collection of dust, and the collection tube (52) is gently rotated to remove it from the box body (1) to dispose of or replace the dust. S5: Maintenance and cleaning: When replacing or cleaning the eraser (6), pull the eraser (6) downward to drive the moving block (81) and the slider (86) to slide downward until the auxiliary ball (84) slides out of the semicircular groove (87), and then the eraser (6) can be removed for cleaning or replacement. When installing, align the slider (86) with the vertical groove (83) and move it upward until the auxiliary ball (84) is stuck in the semicircular groove (87) to ensure that the eraser (6) is firmly installed. If it is necessary to clean or replace the U-shaped baffle (34), just remove the bolts on the mounting block (35) to remove the two U-shaped baffles (34).

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