Blackboard eraser

Abstract

The utility model provides a blackboard eraser, which belongs to the technical field of auxiliary education products and comprises a blackboard eraser body, the blackboard eraser body comprises an end cover, an elastic layer and a felt layer which are sequentially arranged from top to bottom, the blackboard eraser body is sleeved with a flexible sleeve layer from bottom to top, and the flexible sleeve layer surrounds the periphery of the end cover, the periphery of the elastic layer and the periphery of the felt layer and the bottom of the felt layer. A plurality of connecting pieces are arranged on the periphery of the flexible sleeve layer and used for fixing the flexible sleeve layer to the blackboard eraser body, and magnetic attraction blocks are embedded in the two sides of the lower end of the elastic layer. The blackboard eraser provided by the utility model can be magnetically attracted with the automatic blackboard eraser cleaning machine from any end, can be matched with the automatic blackboard eraser cleaning machine for use, does not need to add additional accessories or secondarily improve the structure of the blackboard eraser, and is higher in universality.

Description

Technical Field

[0001] The utility model belongs to the technical field of auxiliary educational products, and more specifically, relates to a blackboard eraser. Background Art

[0002] In order to improve the cleaning efficiency of the blackboard eraser, an automatic blackboard eraser cleaner has emerged. The used blackboard eraser is placed on the automatic blackboard eraser cleaner to complete the automatic cleaning of the blackboard eraser, effectively removing the chalk dust adhered to the blackboard eraser.

[0003] The blackboard erasers in the prior art have poor versatility and usually it is difficult to match with the automatic blackboard eraser cleaner, and additional accessories need to be added or the structure of the blackboard eraser needs to be improved secondly. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a blackboard eraser, aiming to solve the problem that the blackboard eraser is difficult to be matched with the automatic blackboard eraser cleaner for supporting use.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: providing a blackboard eraser, which includes a blackboard eraser body. The blackboard eraser body includes an end cap, an elastic layer and a felt layer which are arranged in sequence from top to bottom. The blackboard eraser body is sleeved with a flexible sleeve layer from bottom to top. The flexible sleeve layer surrounds the outer periphery of the end cap, the elastic layer and the felt layer and the bottom of the felt layer. A plurality of connecting pieces are arranged on the outer periphery of the flexible sleeve layer. The plurality of connecting pieces are used to fix the flexible sleeve layer on the blackboard eraser body. Magnetic blocks are embedded on both sides of the lower end of the elastic layer.

[0006] In a possible implementation manner, a fixing belt is arranged on the outer periphery of the blackboard eraser body. The fixing belt surrounds the upper end of the outer periphery of the flexible sleeve layer. The plurality of connecting pieces sequentially penetrate and connect the fixing belt, the flexible sleeve layer and the end cap from outside to inside.

[0007] In a possible implementation manner, the fixing belt is a belt with its head and tail connected.

[0008] In a possible implementation manner, the end cap includes a first cover body and a second cover body which are arranged in sequence from top to bottom. The first cover body and the second cover body are integrally formed. The first cover body and the second cover body have the same shape and the outer contour of the first cover body is larger than the outer contour of the second cover body. The flexible sleeve layer surrounds the outer periphery of the second cover body. The plurality of connecting pieces are arranged on the outer periphery of the second cover body.

[0009] In a possible implementation manner, the connecting piece is a thumbtack. The tip of the thumbtack sequentially penetrates the belt, the flexible sleeve layer and the second cover body from outside to inside. The end cap of the thumbtack is pressed against the outer end face of the belt.

[0010] In a possible implementation, the height of the magnetic attraction block is greater than half of the thickness of the elastic layer, and the distance between the magnetic attraction block and the outer side surface of the elastic layer is less than the thickness of the magnetic attraction block.

[0011] In a possible implementation, the magnetic attraction block is a rectangular parallelepiped magnet block.

[0012] In a possible implementation, the end cap is made of wood material or injection molding material.

[0013] In a possible implementation, the elastic layer is made of sponge material.

[0014] In a possible implementation, the flexible sleeve layer is made of flannelette material.

[0015] The beneficial effects of a blackboard eraser provided by the present utility model are as follows: Compared with the prior art, the end cap, the elastic layer and the felt layer are arranged in sequence from top to bottom, and the flexible sleeve layer is disposed around the outer side of the blackboard eraser body to enclose the end cap, the elastic layer and the felt layer therein, and a plurality of connecting members are provided circumferentially at the upper part of the flexible sleeve layer. Among them, magnetic attraction blocks are embedded on both sides of the lower end of the elastic layer. Magnetic attraction blocks are embedded at both ends inside the blackboard eraser provided by the present utility model, and it can be magnetically attracted to the blackboard eraser automatic cleaner from any end, can be used in matching with the blackboard eraser automatic cleaner, without adding additional accessories or secondarily improving the structure of the blackboard eraser, and has stronger universality. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 A perspective view of a blackboard eraser provided by an embodiment of the present utility model;

[0018] Figure 2 A side view of a blackboard eraser provided by an embodiment of the present utility model;

[0019] Figure 3 Along Figure 2 The cross-sectional view taken along the line A-A in

[0020] Description of the reference numerals:

[0021] 100, end cap; 110, first cover body; 120, second cover body; 200, elastic layer; 300, felt layer; 400, flexible sleeve layer; 500, fixing band; 600, thumbtack; 700, magnet block. Detailed implementation manners

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

[0023] In the claims, description and above-mentioned drawings of the present utility model, unless otherwise clearly defined, when using terms such as "first", "second" or "third", etc., they are all used to distinguish different objects and are not used to describe a specific order.

[0024] In the claims, description and above-mentioned drawings of the present utility model, unless otherwise clearly defined, for orientation terms, when using terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", "high", "low", etc. to indicate the orientation or position relationship, it is based on the orientation and position relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the specific protection scope of the present utility model.

[0025] Please refer to Figures 1 to 3 , and a blackboard eraser provided by the present utility model will be described. A blackboard eraser includes a blackboard eraser body, and the blackboard eraser body includes a top cover 100, an elastic layer 200 and a felt layer 300 which are arranged in sequence from top to bottom. A flexible sleeve layer 400 is sleeved on the blackboard eraser body from bottom to top. The flexible sleeve layer 400 surrounds the outer periphery of the top cover 100, the elastic layer 200 and the felt layer 300 and the bottom of the felt layer 300. A plurality of connecting pieces are arranged on the outer periphery of the flexible sleeve layer 400, and the plurality of connecting pieces are used to fix the flexible sleeve layer 400 on the blackboard eraser body. Magnetic attraction blocks are embedded on both sides of the lower end of the elastic layer 200.

[0026] Compared with the prior art, for the blackboard eraser provided by the present utility model, the top cover 100, the elastic layer 200 and the felt layer 300 are arranged in sequence from top to bottom. The flexible sleeve layer 400 surrounds the outside of the blackboard eraser body to enclose the top cover 100, the elastic layer 200 and the felt layer 300 inside it, and is circumferentially arranged at the upper part of the flexible sleeve layer 400 through a plurality of connecting pieces. Among them, magnetic attraction blocks are embedded on both sides of the lower end of the elastic layer 200. Magnetic attraction blocks are embedded at both ends inside the blackboard eraser provided by the present utility model, and it can be magnetically attracted to the blackboard eraser automatic cleaner from any end, can be matched with the blackboard eraser automatic cleaner for use, without adding additional accessories or secondarily improving the structure of the blackboard eraser, and has stronger versatility.

[0027] In some embodiments, a fixing belt 500 is provided on the outer periphery of the eraser body. The fixing belt 500 surrounds the upper end of the outer periphery of the flexible sleeve layer 400, and a plurality of connecting members sequentially penetrate and connect the fixing belt 500, the flexible sleeve layer 400, and the end cap 100 from outside to inside. The fixing belt 500 cooperates with the plurality of connecting members to fix the outer periphery of the upper end opening of the flexible sleeve layer 400, so that the flexible sleeve layer 400 remains stable on the eraser body.

[0028] The outer end face of the flexible sleeve layer 400 located at the bottom area of the felt layer 300 is the end face for wiping the blackboard, and chalk dust will adhere to the bottom of the flexible sleeve layer 400. In addition, the bottom of the flexible sleeve layer 400 can also be an open structure, and the felt layer 300 is directly exposed and directly contacts the blackboard, serving as the end face for wiping the blackboard.

[0029] Preferably, the fixing belt 500 is a belt with its head and tail connected, which has a certain strength itself and can play a role in binding the upper port of the flexible sleeve layer 400. At the same time, it cooperates with a plurality of connecting members to keep the flexible sleeve layer 400 stably installed.

[0030] Please refer to Figure 3 , the end cap 100 includes a first cover body 110 and a second cover body 120 arranged in sequence from top to bottom. The first cover body 110 and the second cover body 120 are integrally formed. The first cover body 110 and the second cover body 120 have the same shape, and the outer contour of the first cover body 110 is larger than that of the second cover body 120. The first cover body 110 and the second cover body 120 have rectangular plate bodies, and the outer periphery of the first cover body 110 protrudes from the outer periphery of the second cover body 120 with the same protruding distance. The flexible sleeve layer 400 surrounds the outer periphery of the second cover body 120, and the upper end of the flexible sleeve layer 400 abuts against the root of the step formed by the first cover body 110 and the second cover body 120, thereby forming a positioning structure for the flexible sleeve layer 400. A plurality of connecting members are arranged on the outer periphery of the second cover body 120 and are respectively connected to the second cover body 120.

[0031] Preferably, the connecting member is a thumbtack 600. The tip of the thumbtack 600 sequentially penetrates the belt, the flexible sleeve layer 400, and the second cover body 120 from outside to inside, and the end cap of the thumbtack 600 is pressed against the outer end face of the belt. The thumbtack 600 is pressed into the upper end circumference of the second cover body 120 from outside to inside, thereby sequentially completing the fixation of the belt and the flexible sleeve layer 400 on the outer periphery of the second cover body 120.

[0032] Please refer to Figure 3, the height of the magnetic attraction block is greater than half of the thickness of the elastic layer 200, ensuring that the magnetic attraction block has sufficient height so that the eraser has certain magnetic attraction performance in both the up and down directions. The eraser can be adsorbed on the iron surface blackboard by its upper end face or lower end face. The distance between the magnetic attraction block and the outer side surface of the elastic layer 200 is less than the thickness of the magnetic attraction block to ensure that both the left and right ends of the eraser have strong magnetic attraction performance.

[0033] Preferably, the magnetic attraction block is a cuboid magnet block 700.

[0034] Preferably, the end cap 100 is made of wood material or injection molding material.

[0035] Preferably, the elastic layer 200 is made of sponge material.

[0036] Preferably, the flexible sleeve layer 400 is made of flannel material.

[0037] In addition, for the eraser provided by the present utility model, its length is generally greater than 20 cm, which is longer than ordinary erasers and can wipe a larger area at one time; its thickness is generally greater than 10 cm, which is thicker than ordinary erasers, and dust will not stick to hands during the wiping process.

[0038] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A blackboard eraser, characterized in that: The invention comprises an eraser body, wherein the eraser body comprises an end cap (100), an elastic layer (200) and a felt layer (300) which are arranged in sequence from top to bottom; the eraser body is sleeved with a flexible sleeve layer (400) from bottom to top; the flexible sleeve layer (400) is arranged around the periphery of the end cap (100), the elastic layer (200) and the felt layer (300) and the bottom of the felt layer (300); a plurality of connecting pieces are arranged on the periphery of the flexible sleeve layer (400); the plurality of connecting pieces are used to fix the flexible sleeve layer (400) on the eraser body; and magnetic blocks are embedded on both sides of the lower end of the elastic layer (200).

2. A blackboard eraser as claimed in claim 1, characterized in that: A fixing belt (500) is arranged on the outer periphery of the eraser body, and the fixing belt (500) is arranged around the upper end of the outer periphery of the flexible sleeve layer (400). A plurality of connecting members penetrate and connect the fixing belt (500), the flexible sleeve layer (400) and the end cover (100) in sequence from the outside to the inside.

3. A blackboard eraser as claimed in claim 2, characterized in that: The fixing belt (500) is a belt connected end to end.

4. A blackboard eraser as claimed in claim 3, characterized in that: The end cover (100) comprises a first cover body (110) and a second cover body (120) which are arranged in sequence from top to bottom, the first cover body (110) and the second cover body (120) are integrally formed, the first cover body (110) and the second cover body (120) have the same shape and the outer contour of the first cover body (110) is larger than the outer contour of the second cover body (120), the flexible sleeve (400) is arranged around the outer periphery of the second cover body (120), and the plurality of connecting members are arranged on the outer periphery of the second cover body (120).

5. A blackboard eraser as claimed in claim 4, characterized in that: The connecting piece is a thumbtack (600), the tip of which passes through the belt, the flexible sleeve (400) and the second cover (120) in sequence from outside to inside, and the end cap of the thumbtack (600) is crimped onto the outer end surface of the belt.

6. A blackboard eraser as claimed in any one of claims 1 to 5, characterized in that: The height of the magnetic block is greater than half the thickness of the elastic layer (200), and the distance between the magnetic block and the outer side surface of the elastic layer (200) is less than the thickness of the magnetic block.

7. A blackboard eraser as claimed in any one of claims 1 to 5, characterized in that: The magnetic attraction block is a rectangular parallelepiped magnet block (700).

8. A blackboard eraser as claimed in any one of claims 1 to 5, characterized in that: The end cover (100) is made of wood material or injection molding material.

9. A blackboard eraser as claimed in any one of claims 1 to 5, characterized in that: The elastic layer (200) is made of sponge material.

10. A blackboard eraser according to any one of claims 1 to 5, characterized in that: The flexible sleeve layer (400) is made of flannel material.

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