An eraser

Abstract

The board eraser is characterized in that the lower bottom surface of the board eraser body is bonded with one side surface of the connecting piece, the other side surface of the connecting piece is bonded with the eraser cloth, and the connecting piece and the eraser cloth form a tearing-off wiping module opposite the board eraser body.

Description

Technical Field

[0001] This application relates to the technical field of blackboard erasers, specifically to a blackboard eraser with easily replaceable wiping paper. Background Technology

[0002] A blackboard eraser is a tool used to erase writing or marks on blackboards, whiteboards, or other flat surfaces. It has a wide range of applications.

[0003] Existing blackboard eraser structures generally include an eraser body, to which a cleaning cloth is attached via Velcro. In this type of eraser, the cleaning cloth is reusable. When cleaning is needed, the cloth is torn off the body, washed, and then reattached via Velcro. While this type of eraser allows for washing and reuse, the washing process results in dirty hands, and the cloth, after repeated washing and reattaching via Velcro, is difficult to keep flat, affecting reuse. Furthermore, the cloth is prone to deformation during repeated pulling and sticking, also impacting wiping effectiveness. Utility Model Content

[0004] This application addresses the aforementioned shortcomings of the prior art by providing a board eraser that eliminates the need for cleaning the cloth, maintains the cloth's flatness, and does not affect the wiping effect.

[0005] To solve the above-mentioned technical problems, the technical solution adopted in this application is: a board eraser, the structure of which includes a board eraser body, the bottom surface of the board eraser body being bonded to one side surface of a connector, the other side surface of the connector being bonded to a wiping cloth, and the connector and the wiping cloth forming an easy-tear wiping module relative to the board eraser body.

[0006] Using the above structure, this application employs a connector and a wiping cloth to form an easy-tear wiping module. This modular structure allows for separation from the eraser body. When the wiping cloth becomes contaminated, the easy-tear wiping module can be directly peeled off the eraser body, and then a clean, unused easy-tear wiping module can be replaced. This structure eliminates the need for Velcro, reusable wiping cloths, and the need for washing and re-attaching the cloth. Therefore, this structure avoids hand contamination, is easy to operate, and, because the easy-tear wiping module is bonded to the rigid eraser body, it offers better flatness and effectively maintains the wiping effect of the cloth.

[0007] Furthermore, the connecting component is an EVA component; that is, this solution uses an EVA material component with elastic buffer deformation properties as a connecting component, and sets an adhesive layer on two surfaces of the EVA component that are opposite to each other in the thickness direction, so as to achieve mutual adhesion between the EVA component and the eraser body and the erasing cloth, thereby improving the overall erasing effect of the eraser.

[0008] Furthermore, the eraser body is composed of a first shell and a second shell that overlap each other. A cleaning agent bottle is disposed inside the first shell and the second shell. A button is provided on the first shell, which is used to press and drive the cleaning agent bottle to spray out the cleaning agent. The outer surface of the second shell is bonded to one side surface of the connector. With this structure, the cleaning agent bottle can be built into the eraser body, making it convenient to carry as a whole. The cleaning agent can be sprayed out at any time when wiping is needed, making it easy to operate.

[0009] Furthermore, the wiping cloth is a PP wood pulp spunlace composite cloth (PP wood pulp spunlace composite cloth, PP wood pulp paper, polypropylene (PP) wood pulp composite nonwoven cloth, which is a nonwoven fabric made by mixing polypropylene fibers and lignocellulose in a certain proportion). With this solution, the PP wood pulp spunlace composite cloth and the connector are structurally integrated to form an easy-tear wiping module. It has both the elastic cushioning characteristics of the connector and the high-efficiency adsorption characteristics of PP wood pulp fibers. Therefore, this easy-tear wiping module is a composite material structure with complementary functions, which can effectively improve the overall wiping effect.

[0010] Furthermore, the second housing includes a straight portion and an arc-shaped portion connected to each other. The straight portion is used to approach the surface to be wiped, and the arc-shaped portion is raised relative to the surface to be wiped. The extension surface of the easy-tear wiping module is adapted to the second housing. With this structure, since the second housing includes a straight portion and an arc-shaped portion, when the easy-tear wiping module is pasted onto the second housing, the easy-tear wiping module has a wiping portion that is in contact with the surface to be wiped, and a raised portion that is in contact with the arc-shaped portion but does not participate in wiping. This can effectively increase the bonding area between the easy-tear wiping module and the second housing, improve the bonding strength between the two, and avoid the situation where the easy-tear wiping module is not firmly bonded as a whole due to bonding only through the straight portion, and is prone to folding relative to the second housing during use.

[0011] Furthermore, the second housing has a groove on one side surface for bonding the connector, and the contour of the groove matches the contour of the connector. With this structure, the connector can be bonded in the groove, which serves as a positioning function and prevents the connector from shifting relative to the second housing during the wiping process.

[0012] Furthermore, the depth of the groove is not greater than the thickness of the connector. With this solution, after the connector 1 is bonded in the groove, it is flush with or slightly protrudes from the surface of the second housing along its thickness direction. After the wiping cloth is bonded, the wiping cloth can be completely protruding from the surface of the second housing, achieving full contact between the wiping cloth and the surface to be wiped, thus improving the wiping effect.

[0013] Furthermore, after the connector is bonded into the groove, the connector located at the arc-shaped end of the second housing protrudes from the outer surface of the second housing; with this structure, the protruding connector facilitates the application of force when replacing the easy-tear wiping module s.

[0014] Furthermore, both the second housing and the easy-tear wiping module are provided with spray holes for spraying cleaning agent, and the length direction of the spray holes extends along the moving direction of the nozzle of the cleaning agent bottle; with this structure, the cleaning agent can be sprayed onto the surface to be cleaned through the spray holes, and then wiped with the eraser of this application, thereby improving the wiping effect.

[0015] Furthermore, the first housing has recesses on both side walls along its width. With this design, the recesses make it easy to grip and prevent slipping when the eraser is held for wiping.

[0016] Furthermore, the button slides onto the first housing. This structure facilitates the button's ability to drive the nozzle of the internal cleaning agent bottle to move up and down, thus dispensing the cleaning agent upon pressing. Attached Figure Description

[0017] Figure 1 The first view of the eraser in this application is a structural schematic diagram.

[0018] Figure 2 The second view of the eraser in this application is a structural schematic diagram.

[0019] Figure 3 This application presents a structural schematic diagram of an exploded view of a plate.

[0020] Figure 4 This application presents a schematic diagram of the structure of the eraser after the second housing is concealed.

[0021] Figure 5 This application presents a schematic diagram of the structure of the eraser after the first housing is concealed.

[0022] Figure 6 This application presents a schematic diagram of the structure of the second housing of the eraser.

[0023] Figure 7 This application contains a schematic diagram of the structure of the first shell of the board eraser.

[0024] Figure 8 This application provides a structural schematic diagram of the cross-sectional view of the eraser.

[0025] Figure 9 This application presents a structural schematic diagram of the main view of the sectional view of the plate.

[0026] As shown in the attached diagram: s. Easy-tear wiping module, a. Wiper body, a1. First housing, a11. Recess, a12. Slide groove, a2. Second housing, a21. Flat part, a22. Arc-shaped part, a23. Groove, 1. Connector, 2. Wiping cloth, 3. Detergent bottle, 4. Button, 401. Clamping plate, 402. Clamping groove, 403. Slider, 5. Spray hole. Detailed Implementation

[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are merely preferred embodiments, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this invention.

[0028] Furthermore, it should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or it may be fixed via another intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or it may be fixed via another intermediate component. When a component is considered to be "set on" another component, it can be set directly on the other component or it may be fixed via another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only; unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] As attached Figure 1-9As shown, this application discloses a type of eraser. The eraser's structure includes an eraser body a. The bottom surface of the eraser body a is bonded to one side surface of a connector 1, and the other side surface of the connector 1 is bonded to a wiping cloth 2. The connector 1 and the wiping cloth 2 form an easy-tear wiping module s relative to the second housing. Specifically, this application bonds the connector 1 and the wiping cloth 2 together to form the easy-tear wiping module s. The easy-tear wiping module s is then bonded to the bottom surface of the eraser body a to form a complete eraser structure. Furthermore, the easy-tear wiping module s and the eraser body a are detachably connected, allowing them to be bonded and easily removed for replacement.

[0030] Using the above structure, this application employs a connector and a wiping cloth to form an easy-tear wiping module. This modular structure allows for separation from the eraser body. When the wiping cloth becomes contaminated, the easy-tear wiping module can be directly peeled off the eraser body, and then a clean, unused easy-tear wiping module can be replaced. This structure eliminates the need for Velcro, reusable wiping cloths, and the need for washing and re-attaching the cloth. Therefore, this structure avoids hand contamination, is easy to operate, and, because the easy-tear wiping module is bonded to the rigid eraser body, it offers better flatness and effectively maintains the wiping effect of the cloth.

[0031] As an example, the connector 1 described in this application is an EVA part (such as foam double-sided tape with EVA material (ethylene-vinyl acetate copolymer (ethylene-vinyl acetate copolymer)) as the foam substrate); that is, this solution uses an EVA material part with elastic buffer deformation performance as the connector 1, and sets an adhesive layer on two surfaces opposite to each other in the thickness direction of the EVA part to achieve mutual bonding between the EVA part and the eraser body a and the erasing cloth 2, thereby effectively improving the erasing effect of the eraser.

[0032] As attached Figure 3 As shown, the eraser body a described in this application is composed of a first shell a1 and a second shell a2 that overlap each other. A cleaning agent bottle 3 is disposed inside the first shell a1 and the second shell a2. A button 4 is disposed on the first shell a1. The button 4 is used to press and drive the cleaning agent bottle 3 to spray out cleaning agent. The outer surface of the second shell a2 is bonded to one side surface of the connector 1. Specifically, the first shell a1 and the second shell a2 can be plastic parts, and the two are fastened together by a conventional plug-in fastening method. With this structure, the cleaning agent bottle 3 can be built into the eraser body a, making it convenient to carry as a whole. Cleaning agent can be sprayed out at any time when wiping is needed, which is convenient to operate. The connector 1 can be bonded to the rigid second shell a2, which is also easy to tear off.

[0033] As an example, the wiping cloth 2 described in this application is a PP wood pulp spunlace composite cloth (PP wood pulp spunlace composite cloth, PP wood pulp paper, polypropylene (PP) wood pulp composite nonwoven fabric, a nonwoven fabric made by mixing polypropylene fibers and lignocellulose in a certain proportion). Using this design, the PP wood pulp spunlace composite cloth and the connector are structurally integrated to form an easy-tear wiping module. This module possesses both the elastic cushioning characteristics of the connector and the efficient adsorption characteristics of PP wood pulp fibers. Therefore, this easy-tear wiping module is a functionally complementary composite material structure that effectively improves the overall wiping effect. Specifically, the PP wood pulp spunlace composite cloth can be a commercially available industrial PP wood pulp composite spunlace cloth, whose composition can be a mixture of 30wt% PP and 70wt% wood pulp. It can be prepared using a wet spunlace process to create a wiping cloth with a pearlescent texture, and its basis weight can be 40-90 g / m². It can be directly purchased from the market or customized, both of which are mature industry processes and products, and will not be elaborated upon here.

[0034] As attached Figure 3 and Figure 6 As shown, the second housing a2 of this application includes a straight portion a21 and an arc-shaped portion a22 connected to each other. The straight portion a21 is used to approach the surface to be wiped, and the arc-shaped portion a22 is raised relative to the surface to be wiped. The extension surface of the easy-tear wiping module s is adapted to the second housing a2. Specifically, the second housing a2 of this application is not a completely planar structure, but a combination of a planar portion and an arc-shaped portion. The planar portion is used to adhere to the wiping part of the easy-tear wiping module s for wiping, while the arc-shaped portion a22 is raised and has a certain degree of overlap with the planar portion. With this structure, since the second housing a2 includes a straight portion a21 and an arc-shaped portion a22, when the easy-tear wiping module s is attached to the second housing a2, the easy-tear wiping module s has a wiping portion that fits against the surface to be wiped, and a raised portion that fits against the arc-shaped portion a22 but does not participate in wiping. This can effectively increase the bonding area between the easy-tear wiping module s and the second housing a2, improve the bonding firmness between the two, and avoid the situation that the easy-tear wiping module s may not be firmly bonded as a whole due to bonding only through the straight portion a21, and may easily fold and lift relative to the second housing a2 during use.

[0035] As attached Figure 6As shown, the second housing a2 of this application has a groove a23 on one side surface for bonding the connector 1, and the contour of the groove a23 is adapted to the contour of the connector 1. Specifically, a structure is provided on the surface of the second housing a2 for bonding the connector 1, which has a groove a23 that is completely adapted to the size and contour of the connector 1. With this structure, the connector 1 can be bonded in the groove a23, which serves to limit and position the connector 1 and prevent the connector 1 from shifting relative to the second housing a2 during the wiping process.

[0036] As an example, the recess depth of the groove a23 described in this application is not greater than the thickness of the connector 1. With this solution, after the connector 1 is bonded in the groove a23, it is flush with or slightly protrudes from the surface of the second housing a2 along its thickness direction. After the wiping cloth 2 is bonded, the wiping cloth 2 can be made to completely protrude from the outer surface of the second housing a2, so as to achieve full contact between the wiping cloth 2 and the surface to be wiped and improve the wiping effect.

[0037] As attached Figure 8-9 As shown, after the connector 1 described in this application is bonded into the groove a23, the connector 1 located at the end of the arc-shaped portion a22 of the second housing a2 protrudes from the outer surface of the second housing a2; that is, at this position, the connector 1 is not completely embedded in the groove a23, but slightly protrudes from the outer surface of the second housing a2. With this structure, the protruding connector 1 is convenient to apply force when replacing the easy-tear wiping module s.

[0038] As attached Figure 1 and Figure 3 As described in this application, both the second housing a2 and the easy-tear wiping module s are provided with spray holes 5 for spraying cleaning agent. The length direction of the spray hole 5 extends along the moving direction of the nozzle of the cleaning agent bottle 3. Specifically, the spray hole 5 can be a long strip structure, and the extension direction of the strip is adapted to the displacement of the nozzle of the cleaning agent bottle 3 during the pressing process. With this structure, the cleaning agent can be sprayed onto the surface to be cleaned through the spray hole 5, and then wiped with the eraser of this application, thereby improving the wiping effect.

[0039] As attached Figure 1-4 and Figure 7 As shown, the first housing a1 described in this application has recesses a11 on both sides of the sidewalls along the width direction. Specifically, the recesses a11 are recessed inward in the width direction. With this design, when holding the eraser for wiping, the recesses a11 make it easy to grip, thus preventing slippage during the eraser's wiping and moving process.

[0040] As attached Figure 2 and Figure 4As shown, the button 4 described in this application is slidably fitted onto the first housing a1. Specifically, the button 4 of this application only slides back and forth relative to the length extension direction of the first housing a1. With this structure, it is convenient for the button 4 to drive the nozzle (spray head) of the internal cleaning agent bottle 3 to move up and down to achieve pressing and spraying of cleaning agent.

[0041] As attached Figure 3 , Figure 7-9 As shown, the button 4 described in this application includes a clamping plate 401, the clamping plate 401 forming a clamping groove 402, and a vertically extending slider 403 disposed in the clamping groove 402. Correspondingly, a sliding groove a12 is disposed on the first housing a1, and the slider 403 slides within the sliding groove a12. Specifically, the clamping plate 401 consists of two plates arranged side by side along the thickness direction of the button 4, with a gap between the two plates forming the clamping groove 402. A slider 403 connecting the two plates is disposed within the clamping groove 402. The width of the corresponding sliding groove a12 on the first housing a1 is adapted to the thickness of the slider 403. The slider 403 slides and inserts into the sliding groove a12 in the thickness direction. With this structure, the sliding and precise reset of the button 4 during the pressing process are achieved by the slider 403 on the clamping plate 401 sliding within the sliding groove a12 of the first housing a1.

[0042] The eraser described in this application combines an EVA material connector with a PP wood pulp paper cloth to form an easy-tear wiping module. This easy-tear wiping module can be detached and attached to the second housing. When the cloth becomes soiled, the easy-tear wiping module can be directly torn off the housing and replaced with a new one, eliminating the need for repeated washing and attaching of the cloth. Furthermore, by designing the housing and the easy-tear wiping module as a flat section and an arc section, respectively, the bonding area is large, the bonding is tighter, and the wiping effect is improved. In addition, this modular and detachable design incorporates ethylene-vinyl acetate copolymer (EVA) and polypropylene (PP) composite wood pulp. By combining fiber materials, the elastic cushioning properties of EVA components and the efficient adsorption properties of PP wood pulp fibers form a functionally complementary composite material structure. This structure can effectively remove marks or writing while avoiding the need to wash the wiping cloth, keeping it flat. Therefore, the EVA component + PP wood pulp paper composite combination of this application has a service life of 500-1000 times for a single easy-tear wiping module. When the service life of a single easy-tear wiping module ends, it can be quickly torn off and replaced, thus combining economic and hygienic advantages. Compared with the traditional combination of Velcro and wiping cloth, this structure can completely solve the pain points of repeated washing of wiping cloths, which easily leave stains and make hands dirty during the cleaning process.

Claims

1. A whiteboard eraser, the whiteboard eraser comprising an eraser body (a), characterized in that: The bottom surface of the eraser body (a) is bonded to one side surface of the connector (1), and the other side surface of the connector (1) is bonded to the wiping cloth (2). The connector (1) and the wiping cloth (2) form an easy-tear wiping module (s) relative to the eraser body (a).

2. The eraser according to claim 1, characterized in that: The connector (1) is an EVA component.

3. The eraser according to claim 2, characterized in that: The eraser body (a) is composed of a first shell (a1) and a second shell (a2) that overlap each other. A cleaning agent bottle (3) is provided inside the first shell (a1) and the second shell (a2). A button (4) is provided on the first shell (a1). The button (4) is used to press and drive the cleaning agent bottle (3) to spray out the cleaning agent. The outer surface of the second shell (a2) is bonded to one side surface of the connector (1).

4. The eraser according to claim 3, characterized in that: The wiping cloth (2) is a PP wood pulp spunlace composite cloth.

5. The eraser according to claim 3, characterized in that: The second housing (a2) includes a straight portion (a21) and an arc-shaped portion (a22) connected to each other. The straight portion (a21) is used to approach the surface to be wiped, and the arc-shaped portion (a22) is raised relative to the surface to be wiped. The extension surface of the easy-tear wiping module (s) is adapted to the second housing (a2).

6. The eraser according to claim 5, characterized in that: The second housing (a2) is provided with a groove (a23) on one side surface for bonding the connector (1), and the contour of the groove (a23) is adapted to the contour of the connector (1).

7. The eraser according to claim 6, characterized in that: The depth of the groove (a23) is not greater than the thickness of the connector (1).

8. The eraser according to claim 5, characterized in that: After the connector (1) is bonded into the groove (a23), the connector (1) located at the end of the arc-shaped portion (a22) of the second housing (a2) protrudes from the outer surface of the second housing (a2).

9. The eraser according to claim 1, characterized in that: Both the second housing (a2) and the easy-tear wiping module (s) are provided with spray holes (5) for spraying cleaning agent, and the length direction of the spray holes (5) extends along the moving direction of the nozzle of the cleaning agent bottle (3).

10. The eraser according to claim 1, characterized in that: The first housing (a1) has recesses (a11) on both side walls along the width direction; the button (4) is slidably fitted onto the first housing (a1).

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