Blackboard eraser

Abstract

The utility model discloses a blackboard eraser which comprises a shell (1) and a wiping body (2), one end of the wiping body (2) is connected with the shell (1), and the other end of the wiping body (2) is exposed out of the shell (1). The cleaning device is characterized in that the wiping body (2) comprises a soft filler and wiping cloth (5), and the soft filler is wrapped with the wiping cloth (5); the soft filler comprises a first filler (3) and a second filler (4) which are fixedly connected from top to bottom, and the hardness of the first filler (3) is greater than that of the second filler (4); the end face, far away from the shell, of the wiping body (2) is an arc-shaped face (6). The blackboard eraser is good in erasing feedback force, flat and curved whiteboards can be easily erased cleanly, and the whiteboards can be locally erased.

Description

Technical Field

[0001] The utility model relates to the technical field of cultural and educational supplies, more precisely to a blackboard eraser. Background Art

[0002] The blackboard eraser is used to remove the traces written by a marker on a whiteboard, and comprises a housing and an wiping body, wherein the upper end of the wiping body is installed in the housing, and the lower end of the wiping body is exposed outside the housing. The wiping surface of the wiping body lower end of the existing blackboard eraser on the market currently has two forms of plane and curved surface.

[0003] Flat wiping surface: Most erasers have flat wiping surfaces, because the flat wiping surface has built-in magnets that can be adsorbed on the writing panel, but the disadvantage is that the flat wiping surface cannot fit the curved writing surface of the curved whiteboard well, resulting in poor wiping effect.

[0004] Curved wiping surface: The wiping surface is a curved surface wrapped with a wiping cloth, which has better wiping feedback and is easier to wipe clean. It is more suitable for some curved whiteboards. Disadvantages: There is no local wiping function or local erasing is very difficult, which means that you need to erase a large area and then write again when writing, which is time-consuming and laborious. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a blackboard eraser with good wiping feedback force, which can easily wipe both flat and curved whiteboards clean and can also partially wipe the whiteboard.

[0006] The technical solution of the utility model is to provide a blackboard eraser with the following structure, including a shell and a wiping body, one end of the wiping body is connected to the shell, and the other end of the wiping body is exposed outside the shell; the wiping body includes a soft filler and a wiping cloth, and the wiping cloth is wrapped outside the soft filler; the soft filler includes a first filler and a second filler fixedly connected from top to bottom, and the hardness of the first filler is greater than the hardness of the second filler; the end surface of the wiping body away from the shell is an arc surface.

[0007] After adopting the above structure, the eraser of the utility model has the following advantages compared with the prior art:

[0008] Since the soft filler of the eraser of the utility model includes a first filler and a second filler, the hardness of the first filler is greater than that of the second filler, and the first filler supports the second filler, so that the feedback force of the wiping body is better. The second filler is softer than the first filler, and the end face of the wiping body away from the shell is an arc-shaped surface, so that both flat and curved whiteboards are easy to wipe clean. In addition, since the two sides of the arc-shaped surface of the wiping body are relatively close to the second filler, the second filler will support the two sides of the arc-shaped surface, so that the feedback force on both sides of the wiping body is better, and the whiteboard can be partially wiped, thereby improving the user's experience of the product.

[0009] As an improvement, the side walls of the wiping body are all plane. With this structure, the wiping body structure is more reasonably designed and has a better supporting effect on both sides of the wiping body.

[0010] As an improvement, the end surface of the first filler close to the second filler protrudes from the housing. With this structure, the first filler has a better effect of supporting and shaping the second filler and the wiping cloth.

[0011] As an improvement, the surface of the end face of the wiping body away from the shell along the length direction is an arc surface, and the surface of the end face of the wiping body away from the shell along the width direction is also an arc surface. With this structure, it can ensure that the four corners of the wiping body are closer to the harder first filler, so that the hardness is higher, thereby achieving a better local wiping effect.

[0012] As an improvement, the wiping cloth is in a cross-shaped structure when unfolded, the lower end surface of the second filler is fixedly connected to the middle of the wiping cloth, and the four convex surfaces of the wiping cloth are fixedly connected to the four side walls of the first filler and the second filler; two sides of the four L-shaped right-angle sides of the wiping cloth are spliced ​​and fixedly connected to form a spliced ​​edge. With this structure, the wiping cloth can better realize the double-arc surface structure, and the hardness of the spliced ​​edge is greater than the hardness of the wiping cloth body, which can achieve better local wiping.

[0013] As an improvement, the end surface of the first filler away from the second filler protrudes from the wiping cloth. With this structure, when the first filler is squeezed and deformed, the side wall of the wiping cloth will not be deformed, leaving a certain space for the first filler to be squeezed and deformed.

[0014] As an improvement, a plurality of supporting ribs are provided in the shell, and the supporting ribs are integrally formed with the shell; the end of the first filler away from the second filler abuts against the supporting ribs. With this structure, the structure is simple, and the supporting ribs can prevent the soft filler from contacting the magnet, thereby preventing it from deforming after long-term use.

[0015] As an improvement, the upper end surface of the shell is provided with a groove, and a magnet is embedded in the groove. After adopting this structure, the structure is simple and easy to assemble.

[0016] As an improvement, the second filler is a sponge. After adopting this structure, the wiping effect is better.

[0017] As an improvement, the first filler is an EVA soft filler block. After adopting this structure, the wiping and supporting effects are better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the blackboard eraser of the utility model.

[0019] Figure 2 The utility model is a schematic diagram of the explosion structure of the blackboard eraser.

[0020] Figure 3 The utility model is a schematic diagram of the explosion structure of the wiping body of the blackboard eraser.

[0021] Figure 4 It is a structural schematic diagram of the wiping cloth of the blackboard eraser of the utility model in an unfolded state.

[0022] Figure 5 It is a schematic cross-sectional structure diagram of the length direction of the blackboard eraser of the utility model.

[0023] Figure 6 It is a schematic cross-sectional structure diagram of the eraser of the utility model in the width direction.

[0024] As shown in the figure: 1. Shell, 101. Support ribs, 102. Grooves, 2. Wiping body, 3. First filler, 4. Second filler, 5. Wiping cloth, 501. Convex surface, 502. L-shaped right-angle edge, 503. Joint edge, 6. Arc surface, 7. Plane, 8. Magnet. DETAILED DESCRIPTION

[0025] In order to better understand the present application, a more detailed description of various aspects of the present application will be made with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and do not limit the scope of the present application in any way. Throughout the specification, the same figure numerals refer to the same elements.

[0026] In the drawings, the thickness, size and shape of objects have been slightly exaggerated for ease of explanation. The drawings are only examples and are not drawn strictly to scale.

[0027] It should also be understood that the terms “comprises,” “has,” “includes,” and “including,” when used in this specification, indicate the presence of the described features, integers, steps, operations, elements, and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, and / or combinations thereof.

[0028] like Figures 1 to 3 As shown, the utility model discloses a blackboard eraser, comprising a housing 1 and a wiping body 2. For the convenience of description, the placement state of the blackboard eraser described in this specific embodiment is a state in which the housing is on the upper side and the wiping body is on the lower side.

[0029] The lower end of the shell 1 is provided with an opening, the upper end of the wiping body 2 is installed in the shell 1 , and the lower end of the wiping body 2 is exposed outside the shell 1 .

[0030] The wiping body 2 includes a soft filler and a wiping cloth 5. The soft filler includes a first filler 3 and a second filler 4 fixedly connected from top to bottom, and the hardness of the first filler 3 is greater than the hardness of the second filler 4. Since the first filler supports the second filler, the feedback force of the wiping body is better.

[0031] It should be noted that the second filler 4 is softer than the first filler 3, and the end face of the wiping body 2 away from the shell 1 is an arc-shaped surface. Since the second filler 4 is softer and the lower end face is an arc-shaped surface, when wiping the curved panel body, such a structure will make the second filler 4 more easily deformed so that the second filler 4 will fit the curved whiteboard as a whole during the wiping process. In this way, the eraser can not only wipe flat panels, but also curved panels, and the wiping effect is very clean.

[0032] It should also be added that sometimes not all characters will have errors when the board is written, only a certain part thereof will have errors, and the common curved board eraser cannot realize the function of local wiping. When using a certain corner of the blackboard eraser to perform the local wiping function, since the hardness of the first filler 3 of the blackboard eraser is greater than the hardness of the second filler 4, and since the lower end face of the second filler 4 is an arcuate structure, the four corners of the second filler 4 are closer to the first filler 3, so the first filler 3 gives the second filler 4 a force of support, thereby making the corner of the second filler 4 harder, so that a good local wiping function can be realized.

[0033] In this specific embodiment, the first filler 3 is an EVA soft filler block, and the second filler 4 is a sponge. The first filler 3 and the second filler 4 are fixed by gluing.

[0034] like Figure 4As shown, the wiping cloth 5 is in a cross-shaped structure when unfolded, and the four ends of the wiping cloth 5 form convex surfaces 501, and the sides of two adjacent convex surfaces 501 form L-shaped right-angled edges 502. The lower end surface of the second filler 4 is fixedly connected to the middle part of the wiping cloth 5, and the four convex surfaces 501 of the wiping cloth 5 are fixedly connected to the four side walls of the first filler 3 and the second filler 4; two sides of the four L-shaped right-angled edges 502 of the wiping cloth 5 are fixedly connected to form a spliced ​​edge 503 after splicing, and the two sides of the L-shaped right-angled edges 502 are fixed by gluing after splicing. The hardness of the spliced ​​edge 503 is greater than the hardness of the cloth body of the wiping cloth 5. The lower end surface of the second filler 4 is an arc surface 6, and the lower end surface of the wiping body 2 after manufacturing is also an arc surface 6, that is, the surface of the lower end surface of the wiping body 2 along the length direction is an arc surface 6, and the surface of the lower end surface of the wiping body 2 along the width direction is also an arc surface 6. The side walls of the wiping body 2 are all planes 7. With this structure, the four corners of the wiping body can be closer to the harder first filler, and the hardness of the joint edges of the four corners is greater, so that a better local wiping effect can be achieved. In addition, the wiping body made by the above method can also better achieve a double-arc surface structure.

[0035] like Figures 5 and 6 As shown, after the wiping body 2 is assembled in the shell 1, the lower end face of the first filler 3 protrudes from the lower end face of the shell 1. This makes the first filler closer to the side of the curved surface of the wiping body, improving the effect of local wiping. The upper end face of the first filler 3 protrudes from the upper end face of the wiping cloth 5, leaving a certain space for the first filler to be squeezed and deformed. When the first filler is squeezed and deformed by force, the side wall of the wiping cloth will not be deformed. A plurality of support ribs 101 are provided in the shell 1, and the support ribs 101 are integrally formed with the shell 1. The upper end of the first filler 3 rests on the support ribs 101. The upper end face of the shell 1 is provided with a groove 102, and a magnet 8 is embedded in the groove 102.

[0036] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the principles and spirit of the present application are included in the protection scope of the present application.

Claims

1. A blackboard eraser, comprising a housing (1) and a wiping body (2), wherein one end of the wiping body (2) is connected to the housing (1), and the other end of the wiping body (2) is exposed outside the housing (1); characterized in that: The wiping body (2) comprises a soft filler and a wiping cloth (5), wherein the wiping cloth (5) is wrapped around the soft filler; the soft filler comprises a first filler (3) and a second filler (4) fixedly connected from top to bottom, wherein the hardness of the first filler (3) is greater than the hardness of the second filler (4); and the end surface of the wiping body (2) away from the shell is an arc-shaped surface (6).

2. The eraser according to claim 1, characterized in that: The side walls of the wiping body (2) are all flat surfaces (7).

3. The eraser according to claim 1, characterized in that: The end surface of the first filler (3) close to the second filler (4) protrudes from the shell (1).

4. The eraser according to claim 1, characterized in that: The surface of the end face of the wiping body (2) away from the shell (1) along the length direction is a curved surface (6), and the surface of the end face of the wiping body (2) away from the shell (1) along the width direction is also a curved surface (6).

5. The eraser according to claim 1, 2 or 4, characterized in that: The wiping cloth (5) has a cross-shaped structure in an unfolded state; the lower end surface of the second filler (4) is fixedly connected to the middle part of the wiping cloth (5); the four convex surfaces (501) of the wiping cloth (5) are fixedly connected to the four side walls of the first filler (3) and the second filler (4); and two sides of the four L-shaped right-angle sides (502) of the wiping cloth (5) are spliced ​​and fixedly connected to form a spliced ​​side (503).

6. The eraser according to claim 5, characterized in that: The end surface of the first filler (3) away from the second filler (4) protrudes beyond the wiping cloth (5).

7. The eraser according to claim 1, characterized in that: A plurality of supporting ribs (101) are provided in the shell (1), and the supporting ribs (101) are integrally formed with the shell (1); an end of the first filler (3) away from the second filler (4) abuts against the supporting rib (101).

8. The eraser according to claim 1, characterized in that: The upper end surface of the housing (1) is provided with a groove (102), and a magnet (8) is embedded in the groove (102).

9. The eraser according to claim 1, characterized in that: The second filler (4) is a sponge.

10. The eraser according to claim 1, characterized in that: The first filler (3) is an EVA soft filling block.

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