Blackboard eraser with wet wiping collodion

Abstract

The utility model provides a blackboard eraser with wet wiping collodion. The blackboard eraser with the wet wiping collodion comprises a handheld shell and wiping collodion. The handheld shell is used for being manually held; the erasing collodion is installed on the handheld shell and used for erasing writing on the blackboard. And a water storage cavity is arranged on the erasing collodion. According to the blackboard eraser with the wet wiping collodion, the wiping collodion is installed on the handheld shell, and the handheld shell is pressed in the process of wiping handwriting on a blackboard, so that the handwriting is cleared away. The water storage cavity is formed in the erasing collodion, water in the water storage cavity seeps out when the handheld shell is pressed, and therefore writing on the blackboard can be erased conveniently, and the efficiency of erasing the writing on the blackboard is improved. In the process of cleaning the erasing collodion, water can be added into the water storage cavity, and chalk dust solution and particles on the surface and in the erasing collodion can be brought out through the water seeping out of the water storage cavity, so that cleaning of the erasing collodion is completed conveniently, the strength of manual scrubbing is reduced, the cleaning effect is enhanced, and practicability is good.

Description

TECHNICAL FIELD

[0001] The utility model belongs to teaching aid technical field, concretely relates to a blackboard eraser with wet rubbing rubber. BACKGROUND

[0002] The blackboard is not a board surface of black color, but a plane which can be repeatedly written with chalk. The board surface is hard and is used for teaching. The existing blackboard does not have the function of dust removal, and dust removal is generally carried out manually. Common erasers include brush type erasers, rubber erasers and the like.

[0003] In the prior art, when the brush type eraser is used, dust is easily raised, which seriously affects the teaching of teachers and the health of teachers and students. The rubber eraser needs to absorb a certain amount of water before use, but due to the weak water absorption capacity of rubber, the surface of the rubber eraser is dry and hard after a short time of erasing, which generates a large resistance with the blackboard during use. In addition, the chalk dust on the rubber eraser needs to be manually brushed and cleaned, which is time-consuming and laborious, greatly reducing the practicability of the rubber eraser. UTILITY MODEL CONTENT

[0004] The utility model provides a blackboard eraser with wet rubbing rubber, which aims to solve the problem of manual brushing and cleaning of chalk dust on the rubber eraser in the prior art, which is time-consuming and laborious.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of providing a blackboard eraser with wet rubbing rubber, comprising:

[0006] A hand-held shell is used for manual holding.

[0007] The erasing rubber is installed on the hand-held shell and used for erasing characters on the blackboard. The erasing rubber is provided with a water storage cavity.

[0008] In a possible implementation, the erasing rubber is a cuboid structure, and the erasing rubber has a length direction and a width direction. The water storage cavity is provided with a plurality of water storage cavities, and each water storage cavity is arranged along the width direction. The central axis of each water storage cavity is arranged along the length direction.

[0009] In a possible implementation, each water storage cavity includes two cavities, and both cavities are open.

[0010] In a possible implementation, the erasing rubber is provided with a plurality of first grooves and a plurality of second grooves. Each first groove and each second groove are arranged in sequence, and any two adjacent first grooves are provided with a second groove.

[0011] In a possible implementation, the erasing cotton is provided with a circular-arc notch, and the circular-arc notch is provided with a sawtooth structure.

[0012] In a possible implementation, the handheld shell is provided with a mounting groove, and the erasing cotton is mounted in the mounting groove.

[0013] In a possible implementation, the bottom plate of the mounting groove is provided with a plurality of auxiliary reinforcing columns.

[0014] The blackboard eraser with the wet erasing cotton has the following beneficial effects compared with the prior art: the handheld shell is used for manual holding, the erasing cotton is mounted on the handheld shell and used for erasing characters on a blackboard; the erasing cotton is provided with a water storage cavity, a certain amount of water can be added into the water storage cavity when erasing the blackboard, water seeping out of the water storage cavity can carry out chalk dust solution and particles on the surface and inside of the erasing cotton in the process of cleaning the erasing cotton, so that the cleaning of the erasing cotton is facilitated; in the application, the erasing cotton is mounted on the handheld shell, characters on the blackboard are removed by pressing the handheld shell in the process of erasing the characters; the water storage cavity is arranged on the erasing cotton, water in the water storage cavity seeps out by pressing the handheld shell, so that the characters on the blackboard are easily erased, the process of frequent water soaking is avoided, the operation is convenient, and the efficiency of erasing characters on the blackboard is improved; meanwhile, water can be added into the water storage cavity in the process of cleaning the erasing cotton, water seeping out of the water storage cavity can carry out chalk dust solution and particles on the surface and inside of the erasing cotton, so that the cleaning of the erasing cotton is facilitated, the strength of manual cleaning is reduced, the cleaning effect is enhanced, and the practicability is good. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A structure diagram of the blackboard eraser with the wet erasing cotton provided by the embodiment of the utility model Figure 1 ;

[0016] Figure 2 A structure diagram of the blackboard eraser with the wet erasing cotton provided by the embodiment of the utility model Figure 2 ;

[0017] Figure 3 A structure diagram of the blackboard eraser with the wet erasing cotton provided by the embodiment of the utility model Figure 3 ;

[0018] Figure 4 A structure diagram of the blackboard eraser with the wet erasing cotton provided by the embodiment of the utility model Figure 4 ;

[0019] Figure 5 A structure diagram of the blackboard eraser with the wet erasing cotton provided by the embodiment of the utility model.

[0020] BRIEF DESCRIPTION OF DRAWINGS

[0021] 10, hand-held shell; 11, bottom plate; 12, auxiliary reinforcing column; 13, mounting groove; 20, erasing cotton; 21, water storage cavity; 211, cavity; 22, first groove; 23, second groove; 24, circular-arc-shaped notch. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and do not limit the utility model.

[0023] It should be noted that the terms "length", "width", "height", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the utility model and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0024] It should also be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "fixing", "setting" and the like should be understood broadly, for example, they can be fixedly connected, or detachably connected, or integrated; they can be mechanically connected, or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0025] In addition, the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In addition, the meaning of "multiple", "several" is two or more, unless otherwise explicitly specified and limited.

[0026] Please refer to Figures 1 to 5This invention provides a blackboard eraser with a wet wiping sponge. The blackboard eraser with a wet wiping sponge includes a handheld casing 10 and a wiping sponge 20. The handheld casing 10 is for manual handling. The wiping sponge 20 is mounted on the handheld casing 10 and is used to erase writing on the blackboard. The wiping sponge 20 has a water storage cavity 21.

[0027] Specifically, pressing the handheld casing 10 allows water in the water storage cavity 21 of the eraser cotton 20 to seep out through the eraser cotton 20, thus wetting the eraser cotton 20 during the process of erasing the writing on the blackboard and ensuring the erasing effect.

[0028] This utility model provides a blackboard eraser with a wet-wiping cotton pad. Compared with the prior art, the handheld casing 10 is for manual handling, and the erasing cotton pad 20 is installed on the handheld casing 10 for erasing writing on the blackboard. The erasing cotton pad 20 is provided with a water storage cavity 21, into which a certain amount of water can be added when erasing the blackboard. Water is also added to the water storage cavity 21 during the cleaning process of the erasing cotton pad 20. The water seeping out of the water storage cavity 21 carries away the chalk dust solution and particles on the surface and inside of the erasing cotton pad 20, thus facilitating the cleaning of the erasing cotton pad 20. In this application, by installing the erasing cotton pad 20 on the handheld casing 10, the writing on the blackboard is removed by pressing the handheld casing 10. The water storage cavity 21 on the erasing cotton pad 20 allows water to seep out when the handheld casing 10 is pressed, thus facilitating the erasure of writing on the blackboard, avoiding the process of frequently getting wet, making operation convenient, and improving the efficiency of erasing writing on the blackboard. Meanwhile, during the cleaning of the wiping cotton 20, water can be added to the water storage chamber 21. The water seeping out of the water storage chamber 21 will carry away the chalk dust solution and particles on the surface and inside of the wiping cotton 20, so as to complete the cleaning of the wiping cotton 20, reduce the intensity of manual scrubbing, enhance the cleaning effect, and make it practical.

[0029] Preferably, during the cleaning process of the wiping cotton 20, the wiping cotton 20 can be placed on a pressure plate, and the wastewater can be discharged through the water passage of the pressure plate. The pressure plate can be made using existing technology.

[0030] In some embodiments, please refer to Figures 1 to 3 The erasing cotton 20 has a cuboid structure and has both a length direction and a width direction. Multiple water storage chambers 21 are provided, spaced apart along the width direction, with the central axis of each water storage chamber 21 arranged along the length direction. In this embodiment, the multiple water storage chambers 21 allow water to be evenly distributed onto the surface of the erasing cotton 20, effectively erasing the writing on the blackboard.

[0031] Preferably, the corners of the erasing cotton 20 are rounded, so as to avoid damage to the erasing cotton 20 during erasing of the writing, and ensure the service life of the erasing cotton 20.

[0032] In the above embodiment, the water storage cavity 21 is a cylindrical cavity, and the water storage cavity 21 can have two specifications (i.e., the diameter of the cylindrical cavity has two different sizes). The two specifications of the water storage cavity 21 are arranged on the erasing cotton 20 at intervals.

[0033] In some embodiments, referring to Figure 3 , each water storage cavity 21 includes two cavities 211, and the two cavities 211 are both open. Specifically, the openings of the two cavities 211 are arranged on two sides of the erasing cotton 20, respectively. In this embodiment, the two cavities 211 are separated by cotton, so that the water in the two cavities 211 can penetrate each other, and water can be added to one of the two cavities 211 during erasing of the writing on the blackboard.

[0034] In some embodiments, referring to Figure 1 and Figure 2 , the erasing cotton 20 is provided with a plurality of first grooves 22 and a plurality of second grooves 23. The first grooves 22 and the second grooves 23 are arranged alternately, and there is one second groove 23 between any two adjacent first grooves 22. In this embodiment, a plurality of first grooves 22 and a plurality of second grooves 23 are arranged on the erasing cotton 20, there is one second groove 23 between any two adjacent first grooves 22, and there is one first groove 22 between any two adjacent second grooves 23, so as to increase the friction between the erasing cotton 20 and the blackboard during erasing of the writing on the blackboard, and ensure the erasing effect.

[0035] In some embodiments, referring to Figure 1 and Figure 2 , the erasing cotton 20 is provided with an arc-shaped notch 24, and the arc-shaped notch 24 has a sawtooth structure. In this embodiment, the erasing cotton 20 is provided with an arc-shaped notch 24, and the arc-shaped notch 24 has a sawtooth structure, which increases the surface area of the erasing cotton 20 and can increase the adsorption amount of chalk dust of the erasing cotton 20.

[0036] In some embodiments, referring to Figure 5 , the handheld shell 10 is provided with a mounting groove 13, and the cotton is mounted in the mounting groove 13. In this embodiment, the erasing cotton 20 is mounted in the mounting groove 13, and a part of the erasing cotton 20 is connected to the side wall and the bottom plate 11 of the mounting groove 13 in abutment, which enhances the mounting effect of the erasing cotton 20.

[0037] In some embodiments, referring to Figure 4A plurality of auxiliary reinforcing columns 12 are provided on the bottom plate 11 of the mounting groove 13. Each auxiliary reinforcing column 12 enhances the strength of the bottom plate 11.

[0038] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A blackboard eraser having wet eraser cloth, characterized by, Include: Hand-held shell for manual holding; The eraser cotton is installed on the hand-held shell for erasing the writing on the blackboard; The eraser cotton is provided with a water storage cavity; The eraser cotton is a cuboid structure, the eraser cotton has a length direction and a width direction; The water storage cavity is provided with a plurality of, each water storage cavity is arranged along the width direction, the central axis of each water storage cavity is arranged along the length direction; Each water storage cavity includes two cavities, both cavities are arranged open.

2. The blackboard eraser having wet eraser cotton according to claim 1, wherein The eraser cotton is provided with a plurality of first grooves and a plurality of second grooves; Each first groove and each second groove is arranged in sequence, and there is a second groove between any two adjacent first grooves.

3. A blackboard eraser having wet eraser cloth according to claim 2, wherein The eraser cotton is provided with a circular arc notch, and the circular arc notch has a sawtooth structure.

4. The blackboard eraser having wet eraser cotton according to claim 1, wherein The hand-held shell is provided with a mounting groove, and the cotton is mounted in the mounting groove.

5. A blackboard eraser having wet-erase rubberized cotton according to claim 4, wherein The bottom plate of the mounting groove is provided with a plurality of auxiliary reinforcing columns.

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