Blackboard eraser
By designing dust collection components and dust collection boxes, the blackboard eraser solves the problems of flying dust and difficult-to-remove chalk dust, achieving efficient dust collection and cleaning, and improving the hygiene and wiping effect of the teaching environment.
Patent Information
- Application Number
- CN202520036165.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-01-08
AI Technical Summary
Existing blackboard erasers generate a large amount of dust when erasing chalk marks, polluting the classroom air and endangering the health of teachers and students. At the same time, chalk dust is difficult to remove, affecting the erasing effect.
A blackboard eraser was designed, comprising a main housing, a dust collection assembly, and a dust collection box. The dust collection assembly consists of a wiping component, a dust collection roller, and a dust removal blade. The dust collection roller collects dust and the dust removal blade scrapes away chalk dust. The dust collection box collects dust, forming an efficient dust collection system.
It effectively prevents dust from flying around, protects the health of teachers and students, and ensures the long-term wiping effect of the blackboard eraser and environmental hygiene.
Smart Images
Figure CN223904778U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to teaching tool technical field, especially relate to a blackboard eraser. BACKGROUND
[0002] The current blackboard eraser is a simple and important teaching tool, but the blackboard eraser on the market now, when erasing chalk marks, often produces a large amount of dust, in addition, chalk dust on the blackboard eraser layer is difficult to remove, and the use time is long, not only will affect the wiping effect, but also will raise more dust in the process of erasing, which not only pollutes the classroom air, but also endangers the health of teachers and students. SUMMARY
[0003] The utility model aims at at least solving one of the technical problems existing in the prior art, for this purpose, the utility model provides a blackboard eraser, effectively solve the dust problem produced when the existing blackboard eraser erases chalk marks, significantly improve the environmental health and teaching quality.
[0004] According to the blackboard eraser provided by the first aspect of the utility model, comprising:
[0005] The main shell is internally provided with a containing cavity, and the front side middle part of the main shell is provided with a dust collection port arranged along the length direction of the main shell, and the dust collection port is communicated with the containing cavity;
[0006] The dust collection assembly comprises a wiping member, a dust collection roller and a dust collection box, the wiping member is connected to the front side of the main shell and is arranged along the length direction of the main shell, and along the width direction of the main shell, the wiping member is arranged on both sides of the dust collection port, the dust collection box is detachably connected to the main shell and located in the containing cavity, the dust collection box is provided with a dust collection cavity communicated with the dust collection port, the dust collection roller is rotatably connected to the main shell and arranged along the length direction of the main shell, the dust collection roller is located between the dust collection port and the dust collection cavity, at least part of the dust collection roller extends to the dust collection port, and at least part of the dust collection roller extends to the dust collection cavity;
[0007] Wherein, the dust collection box is connected with a dust removal knife, and the dust removal knife is located in the dust collection cavity and abuts against the outer wall of the dust collection roller.
[0008] The blackboard eraser provided according to the first aspect of this utility model has at least the following beneficial effects: The dust collection port and receiving cavity provided in the main housing, together with the wiping component, dust collection roller, and dust collection box of the dust collection assembly, form a highly efficient dust collection system. During the wiping process, chalk marks are removed by the wiping component, and the generated dust is rolled into the dust collection box by the dust collection roller, effectively preventing dust from flying, reducing classroom air pollution, and protecting the health of teachers and students. In addition, by setting a dust removal blade, the end of the dust removal blade abuts against the outer wall of the dust collection roller, which can further scrape off the chalk dust on the dust collection roller, ensuring that the dust is completely collected, reducing dust residue and secondary flying, which makes cleaning chalk dust simple and convenient, avoiding the problem of difficult-to-remove chalk dust on the blackboard eraser bristles, and ensuring the long-term wiping effect of the blackboard eraser.
[0009] According to the first aspect of the present invention, the blackboard eraser has two dust removal blades connected to the dust collection box, and the two dust removal blades are arranged at intervals along the width direction of the main housing.
[0010] According to the first aspect of the present invention, the blackboard eraser and the dust collection box are integrally formed.
[0011] According to the first aspect of the present invention, the blackboard eraser has rotating holes on the side walls at both ends of the main housing along its length, and rotating shafts at both ends of the dust collection roller along its length are inserted into the rotating holes.
[0012] According to the first aspect of the present invention, the blackboard eraser is detachably connected to the main housing.
[0013] According to the first aspect of the present invention, the blackboard eraser has a slot communicating with the receiving cavity on one side wall of the main housing along its length, and the dust collection box is inserted into the slot and can slide.
[0014] According to the first aspect of the present invention, the main housing is provided with a guide groove communicating with the slot, and the outer wall of the dust collection box is provided with a guide strip that matches the shape of the guide groove, and the guide strip is inserted into the guide groove.
[0015] According to the first aspect of the present invention, the blackboard eraser has a handle connected to one side of the dust collection box, and the handle and the dust collection box are integrally formed.
[0016] According to the first aspect of the present invention, a magnetic suction member is connected to the rear side of the main housing, and the magnetic suction member extends along the length direction of the main housing.
[0017] According to the blackboard eraser provided by the first aspect of the utility model, two magnetic pieces are connected to the rear side of the main shell and are arranged along the width direction of the main shell.
[0018] The additional aspects and advantages of the utility model will be partly given in the following description, partly will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS
[0019] The utility model will be further explained in combination with the drawings and embodiments, wherein:
[0020] Figure 1 The overall schematic view of the blackboard eraser provided by the embodiment of the utility model is provided;
[0021] Figure 2 The structure schematic view of the main shell and dust collecting box provided by the embodiment of the utility model is provided;
[0022] Figure 3 The structure schematic view of the main shell and dust collecting box provided by the embodiment of the utility model is provided;
[0023] Figure 4 The exploded schematic view of the blackboard eraser provided by the embodiment of the utility model is provided.
[0024] The reference signs are as follows:
[0025] Main shell 100, rotating hole 101, insertion slot 102, guide slot 103, accommodating cavity 110, dust collecting port 120, wiping piece 130, dust collecting roller 140, rotating shaft 141, dust collecting box 150, guide strip 151, handle 152, dust removing knife 153, magnetic piece 160. DETAILED DESCRIPTION
[0026] The embodiment of the utility model will be described in detail below, the examples of the embodiment are shown in the drawings, wherein the same or similar signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as the limitation of the utility model.
[0027] In the description of the utility model, it is understood that the orientation description, such as the orientation or position relationship of up, down, left, right and the like indicated by the drawings is only for the convenience of describing the utility model and simplifying the description, and is not indicative or implicit of the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as the limitation of the utility model.
[0028] In the description of the utility model, if it is described to first, second, only for distinguishing technical features for the purpose, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.
[0029] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection should be broadly understood, and the specific meaning of the above words in the utility model can be reasonably determined by the person skilled in the art in combination with the specific content of the technical scheme.
[0030] The embodiment of the utility model provides a blackboard eraser, specific structure and function of the blackboard eraser provided by the embodiment of the utility model will be further explained below in combination with words and drawings.
[0031] Referring to Figures 1 to 4 According to the blackboard eraser provided by the first aspect embodiment of the utility model, the main shell 100 is internally provided with a containing cavity 110, and a dust collecting port 120 is arranged along the length direction in the middle of the front side, and the dust collecting port 120 is communicated with the containing cavity 110. The dust collecting assembly comprises a wiping member 130, a dust collecting roller 140 and a dust collecting box 150. The wiping member 130 is connected to the front side of the main shell 100 and is arranged along the length direction of the main shell 100, and the wiping member 130 is arranged on both sides of the dust collecting port 120 to ensure the comprehensiveness of wiping. The dust collecting box 150 is detachably connected to the main shell 100 and is located in the containing cavity 110, and is provided with a dust collecting cavity communicated with the dust collecting port 120, which facilitates dust collection and cleaning. The dust collecting roller 140 is rotatably connected to the main shell 100 and is also arranged along the length direction of the main shell 100, and is located between the dust collecting port 120 and the dust collecting cavity, and at least part of the dust collecting roller 140 extends forward to the dust collecting port 120 to contact and collect chalk dust, and at least part of the dust collecting roller 140 extends backward to the dust collecting cavity to send the collected chalk dust into the dust collecting box 150. In addition, the dust collecting box 150 is further connected with a dust removing knife 153, and the dust removing knife 153 is located in the dust collecting cavity and abuts against the outer wall of the dust collecting roller 140 at the end portion, so as to remove the chalk dust on the surface of the dust collecting roller 140, so that the chalk dust on the surface of the dust collecting roller 140 falls into the dust collecting cavity, and the dust collecting roller 140 is kept clean, and the continuous and effective use of the blackboard eraser is ensured.
[0032] When in use, the blackboard eraser is only needed to slide along the surface of the blackboard, and the wiping member 130 can erase the chalk marks, and the dust collecting roller 140 and the dust collecting box 150 cooperate to collect the generated dust. When the dust in the dust collecting box 150 accumulates to a certain amount, the dust collecting box 150 can be disassembled for cleaning, which is convenient and fast.
[0033] According to the blackboard eraser provided by the first aspect of the utility model, the dust collecting port 120 and the accommodating cavity 110 are arranged on the main shell 100, the wiping piece 130, the dust collecting roller 140 and the dust collecting box 150 are matched with the dust collecting assembly, and a high-efficiency dust collecting system is formed. During wiping, the chalk marks are wiped off by the wiping piece 130, and the dust generated simultaneously is rolled into the dust collecting box 150 by the dust collecting roller 140, thereby effectively preventing the dust from flying, reducing the pollution of the air in the classroom and protecting the health of teachers and students. In addition, the dust removing knives 153 are arranged, the end portions of the dust removing knives 153 abut against the outer wall of the dust collecting roller 140, the chalk dust on the dust collecting roller 140 can be further scraped off, the dust is ensured to be completely collected, the residual dust and secondary flying are reduced, the chalk dust on the blackboard eraser wool layer is easy to clean, the long-term wiping effect of the blackboard eraser is ensured.
[0034] With reference to Figure 2 and Figure 4 , according to the blackboard eraser provided by the first aspect of the utility model, the dust collecting box 150 is connected with two dust removing knives 153, the two dust removing knives 153 are located in the dust collecting cavity, and the end portions of the two dust removing knives 153 abut against the outer wall of the dust collecting roller 140. When the dust collecting roller 140 rotates during wiping, the two dust removing knives 153 can simultaneously scrape off the chalk dust on the dust collecting roller 140, and the dust is ensured to be more completely collected into the dust collecting box 150.
[0035] It can be understood that, since the two dust removing knives 153 are arranged along the width direction of the main shell 100, the two dust removing knives 153 can cover a wider surface of the dust collecting roller 140, thereby improving the uniformity and efficiency of dust removal. In addition, the double-knife dust removal structure can also reduce the wear of a single dust removing knife 153 and prolong the service life of the blackboard eraser.
[0036] With reference to Figure 2 and Figure 4 , according to the blackboard eraser provided by the first aspect of the utility model, the dust removing knife 153 and the dust collecting box 150 are in an integral molding structure, which not only enhances the connection strength between the dust removing knife 153 and the dust collecting box 150, but also improves the structural stability and durability of the entire blackboard eraser.
[0037] It can be understood that the dust removing knife 153 and the dust collecting box 150 are simultaneously formed by injection molding, die casting or other suitable integral molding processes during the manufacturing process, thereby ensuring the seamless connection between the two. The integrally molded dust removing knife 153 and dust collecting box 150 are more compact in structure, thereby avoiding the loosening or falling problems that may occur in the traditional connection mode.
[0038] In addition, the one-piece structure also simplifies the assembly process of the blackboard eraser, reduces the number of parts, and reduces production costs. At the same time, since the dust removal knife 153 and the dust collection box 150 are one, the user is more convenient when cleaning the dust collection box 150, and does not need to worry about the loss or damage of the dust removal knife 153.
[0039] With reference to Figure 1 and Figure 4 According to the blackboard eraser provided by the first aspect of the present application, the side walls at both ends of the main shell 100 in the length direction are provided with rotating holes 101, and the rotating holes 101 are used to install and support the dust collection roller 140. Correspondingly, the two ends of the dust collection roller 140 in the length direction are provided with rotating shafts 141, and the rotating shafts 141 are matched with the rotating holes 101 on the main shell 100 to realize the rotating connection of the dust collection roller 140. Through this insertion mode, the dust collection roller 140 can be stably installed on the main shell 100 and can rotate smoothly during the wiping process.
[0040] It can be understood that the rotating shafts 141 are matched with the rotating holes 101 on the main shell 100, which not only ensures the stable connection between the dust collection roller 140 and the main shell 100, but also enables the dust collection roller 140 to maintain balance when rotating, thereby improving the wiping effect and dust collection efficiency of the blackboard eraser. At the same time, the design of the rotating holes 101 and the rotating shafts 141 also makes the assembly and disassembly process of the blackboard eraser more simple and convenient, facilitating user maintenance and cleaning.
[0041] With reference to Figure 1 and Figure 2 According to the blackboard eraser provided by the first aspect of the present application, the wiping member 130 is detachably connected to the main shell 100. For example, a buckle, a clamping groove, or a threaded hole and the like connecting components can be provided on the main shell 100, and a matching clamping hook, clamping strip, or threaded column is correspondingly provided on the wiping member 130. Through such a design, the user can easily detach the wiping member 130 from the main shell 100 for cleaning, replacement, or maintenance. When the wiping member 130 becomes dirty or worn due to long-term use, the user does not need to replace the entire blackboard eraser, but only needs to simply detach the wiping member 130 for cleaning or replace it with a new wiping member 130. This not only saves resources, but also reduces the use cost.
[0042] In addition, the detachable wiping member 130 also allows the user to select wiping members 130 of different materials, different hardnesses, or different shapes according to actual needs to meet the wiping needs in different scenarios. For example, when stubborn chalk marks need to be wiped, a harder wiping member 130 can be selected; and when gentle wiping is needed to avoid damaging the surface of the blackboard, a softer wiping member 130 can be selected.
[0043] With reference to Figures 2 to 4According to the blackboard eraser provided by the first aspect of the utility model, one side wall of the main shell 100 in the length direction is provided with a slot 102 which is communicated with the accommodating cavity 110, the dust collecting box 150 is matched with the slot 102 in shape and size, so that the dust collecting box 150 can be easily inserted into the slot 102 and slide along the direction of the slot 102. The sliding connection not only ensures the stable combination between the dust collecting box 150 and the main shell 100, but also enables the user to conveniently and quickly complete the operation when the dust collecting box 150 needs to be cleaned or replaced.
[0044] When the dust collecting box 150 is inserted into the slot 102, it is communicated with the accommodating cavity 110 of the main shell 100, so as to ensure that the dust generated in the wiping process can be smoothly collected into the dust collecting box 150. Meanwhile, the sliding design of the dust collecting box 150 also makes it more flexible and convenient during installation and disassembly, thereby improving the use convenience of the blackboard eraser.
[0045] Referring to Figure 3 and Figure 4 , according to the blackboard eraser provided by the first aspect of the utility model, the main shell 100 is provided with a guide groove 103 which is communicated with the slot 102, the outer wall of the dust collecting box 150 is provided with a guide strip 151 which is matched with the guide groove 103 in shape, the guide groove 103 extends along the length direction of the slot 102, and the shape and size of the guide groove 103 are matched with the guide strip 151, so as to ensure that the dust collecting box 150 can keep a stable and correct direction during insertion and sliding. The cooperation between the guide strip 151 and the guide groove 103 not only makes the insertion process of the dust collecting box 150 more smooth, but also can effectively prevent the dust collecting box 150 from deviating or tilting during sliding.
[0046] It can be understood that the cooperation between the guide strip 151 and the guide groove 103 greatly improves the assembly and use convenience of the blackboard eraser. When the user inserts or extracts the dust collecting box 150, only needs to operate along the direction of the guide groove 103, so as to easily complete the operation without worrying that the dust collecting box 150 will be misaligned or damaged. Meanwhile, the design also enhances the connection stability between the dust collecting box 150 and the main shell 100, so as to ensure the reliability and durability of the blackboard eraser during wiping.
[0047] Referring to Figures 1 to 4According to the blackboard eraser provided in the first aspect of the utility model, one side of the dust collecting box 150 is connected with a handle 152, which facilitates the user to pull the dust collecting box 150. In addition, the handle 152 and the dust collecting box 150 are in an integrated molding structure, which is beneficial to improve the stability of the connection between the handle 152 and the dust collecting box 150. When in use, the user only needs to hold the handle 152, and the dust collecting box 150 can be easily pulled out of or inserted into the insertion slot 102 of the main shell 100, so that the operation is simple and fast. The integrated handle 152 and dust collecting box 150 also ensure that the handle 152 will not loosen or fall off during long-term use, thereby improving the durability and reliability of the blackboard eraser.
[0048] With reference to Figures 1 to 4 According to the blackboard eraser provided in the first aspect of the utility model, the rear side of the main shell 100 is connected with a magnetic member 160. The magnetic member 160 can be connected by adhesion, screw fixation or other suitable methods. The magnetic member 160 is made of a material with strong magnetism, such as a neodymium iron boron magnet, so as to ensure that it can be firmly adsorbed on an iron blackboard or other magnetic surface.
[0049] During use, when the user needs to temporarily place the blackboard eraser on the blackboard, the user only needs to place the rear side of the blackboard eraser close to the blackboard, and the magnetic member 160 will automatically be adsorbed on the blackboard, without the need for the user to manually press or find a support point. This not only saves the time and effort of the user, but also avoids the accidental falling or loss of the blackboard eraser during use.
[0050] In addition, the design of the magnetic member 160 also makes the blackboard eraser more convenient to store and carry. The user can adsorb the blackboard eraser on a metal bookshelf, a magnetic whiteboard or other magnetic objects, thereby saving storage space and ensuring that the blackboard eraser is always in an easily accessible state.
[0051] With reference to Figure 3 and Figure 4 According to the blackboard eraser provided in the first aspect of the utility model, the rear side of the main shell 100 is connected with two magnetic members 160. The two magnetic members 160 are arranged in a spaced manner along the width direction of the main shell 100. When the blackboard eraser needs to be adsorbed on the blackboard, the two magnetic members 160 simultaneously generate a magnetic attraction force with the blackboard, so that the blackboard eraser can be stably adsorbed on the blackboard. Since the magnetic members 160 are arranged in a spaced manner, the magnetic attraction force provided thereby is more uniform, which effectively prevents the blackboard eraser from tilting or falling due to uneven force.
[0052] In addition, the design of the two magnetic members 160 also enhances the stability of the blackboard eraser during storage and carrying. Whether the blackboard eraser is adsorbed on a metal bookshelf, a magnetic whiteboard or other magnetic objects, the two magnetic members 160 can provide sufficient adsorption force to ensure that the blackboard eraser will not accidentally fall off.
[0053] Of course, the utility model is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the utility model, and these equivalent modifications or replacements are all included in the range defined by the claims of the application.
Claims
1. A blackboard eraser, characterized in that, include: The main housing has an internal cavity, and a dust collection port is provided at the center of the front side of the main housing, which is arranged along the length of the main housing and is connected to the cavity. A dust collection assembly includes a wiping component, a dust collection roller, and a dust collection box. The wiping component is connected to the front side of the main housing and is arranged along the length direction of the main housing. The wiping component is provided on both sides of the dust collection port along the width direction of the main housing. The dust collection box is detachably connected to the main housing and is located in the receiving cavity. The dust collection box has a dust collection chamber communicating with the dust collection port. The dust collection roller is rotatably connected to the main housing and is arranged along the length direction of the main housing. The dust collection roller is located between the dust collection port and the dust collection chamber. At least a portion of the dust collection roller extends forward to the dust collection port, and at least a portion of the dust collection roller extends rearward into the dust collection chamber. The dust collection box is connected to a dust removal blade, which is located inside the dust collection chamber and its end abuts against the outer wall of the dust collection roller.
2. The blackboard eraser according to claim 1, characterized in that The dust collection box is connected to two dust removal blades, which are arranged at intervals along the width direction of the main housing.
3. The blackboard eraser according to claim 1 or 2, characterized in that The dust removal blade and the dust collection box are integrally formed.
4. The blackboard eraser of claim 1, wherein, The main housing has rotating holes on both sides of its length direction, and the dust collection roller has rotating shafts at both ends of its length direction, with the rotating shafts inserted into the rotating holes.
5. The blackboard eraser according to claim 1, characterized in that, The wiping component is detachably connected to the main housing.
6. The blackboard eraser according to claim 1, characterized in that, One side wall along the length of the main housing is provided with a slot that connects to the receiving cavity, and the dust collection box is inserted into the slot and can slide.
7. The blackboard eraser according to claim 6, characterized in that, The main housing is provided with a guide groove that communicates with the slot, and the outer wall of the dust collection box is provided with a guide strip that matches the shape of the guide groove, and the guide strip is inserted into the guide groove.
8. The blackboard eraser according to claim 6, characterized in that, A handle is attached to one side of the dust collection box, and the handle and the dust collection box are integrally formed.
9. The blackboard eraser according to claim 1, characterized in that, A magnetic clasp is connected to the rear side of the main housing, and the magnetic clasp extends along the length of the main housing.
10. The blackboard eraser according to claim 9, characterized in that, Two magnetic suction components are connected to the rear side of the main housing, and the two magnetic suction components are arranged at intervals along the width direction of the main housing.