CN214647204U

CN214647204U - Lengthened multifunctional blackboard eraser

Info

Publication number: CN214647204U
Application number: CN202120276954.0U
Authority: CN
Inventors: 陈华强; 黄文锋
Original assignee: Fuan Xibeiyang New Area No 1 Primary School; Fujian Education Equipment And Infrastructure Center
Current assignee: Fuan Xibeiyang New Area No 1 Primary School; Fujian Education Equipment And Infrastructure Center
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-11-09
Anticipated expiration: 2031-01-29

Abstract

The utility model relates to an elongated multifunctional blackboard eraser, which belongs to the technical field of teaching auxiliary tools. The blackboard eraser comprises a base block, wherein a groove along the length direction is formed in the bottom of the base block, a plurality of blackboard eraser blocks are embedded in the groove, the top end of each blackboard eraser block is embedded in the groove, the bottom end of each blackboard eraser block is arranged outside the groove, one side of the top surface of the base block is provided with ruler scales, the other side of the top surface of the base block is fixedly provided with a storage box, one side of the storage box is open, and angle scales are arranged at the positions, close to the two ends, of the top surface of the base block; one corner of the base block is provided with a first notch and a screw, and the bottom end of the screw is inserted into the top surface of the base block and penetrates through the first notch to be fixedly connected with the base block. The utility model provides a suitability that prior art's blackboard eraser exists poor, the function scheduling problem that lacks.

Description

Lengthened multifunctional blackboard eraser

Technical Field

The utility model relates to an elongated multifunctional blackboard eraser, which belongs to the technical field of teaching auxiliary tools.

Background

With the development of modern technical means, many high-tech devices enter classrooms to bring fresh vitality for education and teaching, and the blackboard-writing function of the blackboard is always an extremely important teaching mode for teachers at the same line. The good blackboard writing can not only make students clearly review the context of knowledge at a glance, but also be an indispensable part for classroom learning of the students.

The blackboard eraser in the prior art generally comprises a plastic part and a felt part, and the blackboard eraser cannot realize peculiar functions outside the blackboard and has single functionality.

Patent document CN201921918643.9 discloses a long blackboard eraser, the length-width ratio of which is greater than ten to one, i.e. the width of the blackboard eraser is kept at 3-4 cm, and the length thereof is increased to 40-50 cm, so as to improve the blackboard erasing efficiency and save the physical strength of teachers.

Above-mentioned reference example and prior art's blackboard eraser has the suitability poor, the function scheduling problem that lacks, consequently, the utility model provides a multi-functional blackboard eraser of extension type is used for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

In order to overcome the shortcomings of poor applicability, few functions and the like of the existing blackboard eraser, the utility model relates to an elongated multifunctional blackboard eraser, which has simple structure, is suitable for various crowds, has good functionality, can be used as wisdom tooth and protractor and can be used as compasses.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a lengthened multifunctional blackboard eraser comprises a base block, wherein a groove along the length direction is formed in the bottom of the base block, a plurality of blackboard eraser blocks are embedded in the groove, the top ends of the blackboard eraser blocks are embedded in the groove, the bottom ends of the blackboard eraser blocks are arranged outside the groove, ruler scales are arranged on one side of the top surface of the base block, a storage box is fixedly arranged on the other side of the top surface of the base block, one side, close to the ruler scales, of the storage box is open, and angle scales are arranged on the top surface of the base block, close to the two ends of the top surface of the base block; one corner of the base block is provided with a first notch and a screw, and the bottom end of the screw is inserted into the top surface of the base block and penetrates through the first notch to be fixedly connected with the base block.

The screw is characterized in that a sleeve is arranged in the first notch, the bottom end of the screw is inserted into the top surface of the base block and penetrates through the sleeve in the first notch to be fixedly connected with the base block, and the sleeve is sleeved outside the screw.

A plurality of second gaps are formed between one side face, far away from the open side, of the storage box and the top face, and the second gaps are communicated with the outside and the inside of the storage box.

The number of the eraser blocks is at least three.

The number of the second notches is at least three.

Compared with the prior art the utility model discloses there are following characteristics and beneficial effect: the utility model can embed a plurality of eraser into the groove at the bottom of the base block through the lengthening design of the base block, the eraser is replaceable, the use convenience of the utility model is increased, and meanwhile, the plurality of erasers effectively increase the wiping area and increase the wiping efficiency;

the utility model discloses a ruler scale and angle scale's setting, make the utility model discloses can rule or rule as required and measure the angle, increased the utility model's functionality, simultaneously the utility model discloses a first breach, screw and sheathed tube setting make the utility model discloses can draw a circle as the compasses, further increased the functionality;

the utility model discloses a design of storing box makes the utility model discloses possess the storing function, can place article such as the string of chalk, drawing circle, the storing box still can regard as the handle simultaneously concurrently, has adapted to different crowds, has increased the utility model discloses an adaptability, and the utility model discloses an it has a plurality of second breachs to open on the storing box, has made things convenient for taking out of inside article.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a bottom view of the overall structure of the present invention;

fig. 3 is a partial sectional view of the present invention.

Wherein the reference numerals are: 10. a base block; 11. a groove; 12. ruler scales; 13. angle scales; 14. a first notch; 15. a screw; 16. a sleeve; 20. an eraser block; 30. a storage box; 31. a second notch.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-3, the elongated multifunctional blackboard eraser of the present embodiment includes a base block 10, the base block 10 is composed of wood blocks with a length of 45 cm and a width of 7 cm, the base block 10 is hollow, a groove 11 is formed at the bottom of the base block 10 along the length direction, at least three blackboard eraser blocks 20 are embedded in the groove 11, the blackboard eraser 20 is replaceable, the top end of the blackboard eraser block 20 is embedded in the groove 11, the bottom end of the blackboard eraser block is disposed outside the groove 11, one side of the top surface of the base block 10 is provided with a ruler scale 12, the other side of the top surface of the base block 10 is fixedly provided with a storage box 30, one side of the storage box 30 is open, and the top surface of the base block 10 near both ends is provided with an angle scale 13; a first gap 14 is opened at one corner of the base block 10 and a screw 15 is provided, and the bottom end of the screw 15 is inserted into the top surface of the base block 10 and passes through the first gap 14 to be fixedly connected with the base block 10.

Further, a sleeve 16 is arranged in the first gap 14, the bottom end of the screw 15 is inserted into the top surface of the base block 10 and passes through the sleeve 16 in the first gap 14 to be fixedly connected with the base block 10, and the sleeve 16 is sleeved outside the screw 15.

Further, at least three second gaps 31 are formed between one side face, away from the opening side, of the storage box 30 and the top face, and the second gaps 31 are communicated with the outside and the inside of the storage box 30.

The utility model discloses a theory of operation: 3 eraser 20 can be embedded in the groove 11 of the utility model, because the upper half part of the eraser 20 is plastic and the lower half part is felt, the upper half part of the eraser 20 can be embedded in the groove 11 in an interference fit manner, and the felt part of the eraser 20 is arranged outside the groove 11;

when the blackboard is erased, the hands can hold the two sides of the base block 10 for erasing, and 3 eraser blocks are arranged in the base block 10, so the speed of erasing efficiency is improved, and in view of different users, a girl teacher or a student can hold the storage box 30 by the hands and then erase the storage box;

when the auxiliary scribing is needed, the top surface of the base block 10 can be used for assisting in scribing and measuring angles due to the ruler scale 12 and the angle scale 13, the screw 15 and the sleeve 16 in the first notch 14 in one corner of the base block 10 can be used as compasses, one end of the thin rope is tied outside the sleeve 16, and the other end of the thin rope is tied on a chalk, so that a circle can be drawn.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; the term "connected" may refer to a direct connection, an indirect connection through an intermediate, a connection between two elements or an interaction relationship between two elements, and unless otherwise specifically defined, the term should be understood as having a specific meaning in the present application by those skilled in the art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A lengthened multifunctional blackboard eraser is characterized in that: the blackboard eraser comprises a base block (10), wherein a groove (11) along the length direction is formed in the bottom of the base block (10), a plurality of blackboard eraser blocks (20) are embedded in the groove (11), the top ends of the blackboard eraser blocks (20) are embedded in the groove (11), the bottom ends of the blackboard eraser blocks are arranged outside the groove (11), ruler scales (12) are arranged on one side of the top surface of the base block (10), a storage box (30) is fixedly arranged on the other side of the top surface of the base block (10), one side, close to the ruler scales (12), of the storage box (30) is open, and angle scales (13) are arranged on the top surface of the base block (10) close to two ends of the top surface of the base block;

one corner of the base block (10) is provided with a first notch (14) and a screw (15), and the bottom end of the screw (15) is inserted into the top surface of the base block (10) and penetrates through the first notch (14) to be fixedly connected with the base block (10).

2. The multifunctional blackboard eraser with an elongated shape according to claim 1, wherein: a sleeve (16) is arranged in the first notch (14), the bottom end of the screw (15) is inserted into the top surface of the base block (10) and penetrates through the sleeve (16) in the first notch (14) to be fixedly connected with the base block (10), and the sleeve (16) is sleeved outside the screw (15).

3. The multifunctional blackboard eraser with an elongated shape according to claim 1, wherein: a plurality of second gaps (31) are formed between one side face, far away from the open side, of the storage box (30) and the top face, and the second gaps (31) are communicated with the outside and the inside of the storage box (30).

4. The multifunctional blackboard eraser with an elongated shape according to claim 1, wherein: the number of the eraser blocks (20) is at least three.

5. The multifunctional blackboard eraser with an elongated shape as claimed in claim 3, wherein: the number of the second notches (31) is at least three.