CN212529144U

CN212529144U - Sliding and rotating display blackboard

Info

Publication number: CN212529144U
Application number: CN201821603819.7U
Authority: CN
Inventors: 张璐; 王海洋
Original assignee: Jincheng College of Sichuan University
Current assignee: Jincheng College of Sichuan University
Priority date: 2018-09-29
Filing date: 2018-09-29
Publication date: 2021-02-12
Anticipated expiration: 2028-09-29

Abstract

The utility model discloses a sliding and rotating display blackboard, which relates to the field of blackboards and comprises a blackboard a, two sliding blackboard devices, a sliding rail a and a sliding rail b, wherein the sliding rail a is fixedly connected with the top of the blackboard a, and the sliding rail b is fixedly connected with the bottom of the blackboard a; the blackboard device slides includes blackboard b, two slider, stand and wheel, slide rail a bottom is provided with spout an, slide rail b top is provided with spout b, two slider set up respectively in spout an with in the spout b, the wheel with the bottom fixed connection of stand, still be provided with the brake block on the wheel. The sliding and rotating display blackboard effectively expands the area of the blackboard; the slidable blackboard device can rotate around the axis, so that the blackboard device can be displayed at an angle, and the display angle is arbitrary, thereby being convenient for people to use. The whole device is simple in structure and low in cost, and is suitable for classrooms of different sizes.

Description

Sliding and rotating display blackboard

Technical Field

The utility model relates to a blackboard field specifically is a slip and rotatory show blackboard.

Background

The blackboard is a board on which writing, recording and displaying can be carried out, and is mainly used for teaching. In the teaching process, teachers often need to make blackboard-writing, and the key contents are stated on a blackboard to assist teaching. Although science and technology products such as a slide show and a projection are gradually applied to teaching along with the progress of science and technology, teachers also make more PPT for teaching, statistics show that the teaching effect of the teaching method is still not superior to that of the traditional blackboard writing mode, and a blackboard is still the most common teaching tool at the present stage.

In the prior art, a blackboard is usually integrated or has simple functions of longitudinal and transverse movement, but the area size of the board surface is fixed and is limited by the size of a classroom. In the teaching process, the situations that the content of the blackboard writing is more and the area of the blackboard is not enough often occur. In the teaching process, the blackboard writing of the teacher is systematic generally, has the functions of leading and summarizing the contents of the whole class, and is convenient for students to have overall knowledge on the teaching contents. When the blackboard appears and is not enough, if insert preceding content and can influence the wholeness of whole blackboard-writing, if change the typeface size again can make the student read strenuously, this all will influence the teaching quality.

In addition to the teaching field, blackboards are also commonly used in research fields. In general, in the research of a subject, the logic is strong, the front content and the back content are mutually connected, scientists are usually used to practice on a blackboard, on one hand, the scientists can record some accidental inspiration and important content, and on the other hand, the scientists can prompt and enlighten thinking at any time. Because of the prior art, the blackboard is a flat plate, the arrangement form of the blackboard is fixed, and when the blackboard is near the blackboard, the record at the far end of the blackboard is not easy to see clearly due to the limitation of the visual angle. Researchers are reluctant to wave back and forth when using such blackboards.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide a slip and rotatory show blackboard, expand blackboard total area, make it to be the angle simultaneously and demonstrate.

The purpose of the utility model is realized through the following technical scheme:

a sliding and rotating display blackboard comprises a blackboard a, two sliding blackboard devices, a sliding rail a and a sliding rail b, wherein the sliding rail a is fixedly connected with the top of the blackboard a, and the sliding rail b is fixedly connected with the bottom of the blackboard a;

the sliding blackboard device comprises a blackboard b, two sliding devices, a stand column and wheels, wherein two ends of the blackboard b are respectively and fixedly provided with a shaft a, round holes are respectively processed at two ends of the shaft a, each sliding device comprises a support, each support is of a shifting fork structure, a shaft c is arranged between every two shifting forks, each shaft c is externally sleeved with a wheel, the top of each support is provided with a shaft b, each shaft b penetrates through a round hole at the end part of one shaft a and is connected with the shaft a through a bearing, the top end of each stand column is provided with a shaft d, each shaft d penetrates through a round hole at one end of the other shaft a and is connected with the shaft a through a bearing, each wheel is fixedly connected with the bottom of the stand column, and each wheel is also;

the bottom of the sliding rail a is provided with a sliding chute a, the top of the sliding rail b is provided with a sliding chute b, and the two sliding devices are respectively arranged in the sliding chute a and the sliding chute b.

Further, the length of the slide rail b is smaller than the sum of the lengths of the two blackboards b minus the diameter of the upright post.

Furthermore, spout a and spout b are logical groove, slide rail b's both ends all have the dog through screw connection.

Furthermore, hand-pulling handrails are arranged at positions, close to the tops, of the two stand columns.

The utility model has the advantages that:

1. the sliding and rotating display blackboard is composed of a fixed blackboard and two slidable blackboard devices, the blackboard area is effectively expanded, and more contents can be recorded and displayed.

2. In this slip and rotatory show blackboard, slidable blackboard device can rotate around the axle center for this blackboard device can be the angle show, and its show angle is arbitrary simultaneously, makes things convenient for people to use. The brake pads are arranged on the wheels of the bottom plate of the blackboard device, and when a person moves the blackboard device to a proper position, the blackboard device can also be braked, so that the blackboard device is more stable to use.

3. The slide rail is provided with a detachable stop block, so that the sliding blackboard device does not need to be worried about falling off when in use; meanwhile, the stop block is detachable, so that the blackboard device can be conveniently taken out when the blackboard device is not needed to be used or the slidable blackboard device needs to be maintained.

4. The whole device is simple in structure, low in cost, high in adaptability and capable of being flexibly arranged for classrooms of different sizes.

Drawings

FIG. 1 is a schematic view of the unfolding structure of a sliding and rotating display blackboard according to the present invention;

FIG. 2 is a schematic view of the structure of the sliding blackboard apparatus;

FIG. 3 is a bottom view of the blackboard b;

FIG. 4 is a schematic view of the sliding device;

FIG. 5 is a front view showing a retracted state of the sliding and rotating display blackboard according to the present invention;

in the figure, 1-blackboard a, 2-sliding blackboard device, 3-sliding rail a, 4-sliding rail b, 21-blackboard b, 22-sliding device, 23-upright post, 24-wheel, 221-shaft b, 222-support, 223-shaft c and 224-wheel.

Detailed Description

The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.

As shown in FIG. 1, a sliding and rotating show blackboard is composed of a blackboard a1, two sliding blackboard devices 2, a slide rail a3 and a slide rail b 4.

The blackboard a1 is fixed on the wall, the slide rail a3 is fixed on the top of the blackboard a1, and the slide rail b4 is fixed on the bottom of the blackboard a 1. The sliding blackboard device 2 is provided between the slide rail a3 and the slide rail b4, and is slidable in the left-right direction.

As shown in fig. 2, the sliding blackboard device 2 is composed of a blackboard b21, two sliding devices 22, a column 23, and wheels 24.

As shown in fig. 3, two ends of the blackboard b21 are respectively fixedly provided with a shaft a, and both ends of the shaft a are respectively provided with a round hole.

As shown in fig. 4, the sliding device 22 includes a support 222, the front end of the support 222 is a fork structure, a through hole is processed at the end of each fork, a shaft c223 is arranged between the two forks, a wheel 224 is sleeved outside the shaft c223, and the shaft c223 is movably connected with the wheel 224 and the fork, so as to ensure that the wheel 224 can smoothly rotate around the axis of the shaft c 223.

The top of the support 222 is provided with a shaft b221, the shaft b221 passes through a circular hole at the end of the shaft a and is connected with the shaft a through a bearing, that is, the two sliding devices 22 are hinged with two ends of one side of the blackboard b21 respectively, and the middle of the two sliding devices is provided with a bearing, so that the rotation is smoother.

As shown in fig. 2, the top end of the upright 23 is provided with a shaft d, and the shaft d passes through a round hole at one end of the other shaft a and is connected with the other shaft a through a bearing, so that the upright 23 can also rotate with the blackboard b 21. The bottom of the upright column 23 is fixed with a wheel 24, and the wheel 24 is also provided with a brake pad. The stand column is arranged to support the blackboard b21 and enhance stability, and when a user manually drags the blackboard b21 to a desired position, the blackboard b can be fixed through a brake due to the fact that wheels have a brake function, and use is more stable.

The bottom of the slide rail a3 is provided with a slide groove a, the top of the slide rail b4 is provided with a slide groove b, and the two sliding devices 22 are respectively arranged in the slide groove a and the slide groove b. The limiting function of the two sliding devices 22 is completed through the function of the sliding grooves, and the sliding devices are prevented from falling off the sliding rails when being dragged.

Further, the length of the slide rail b4 is less than the sum of the lengths of the two blackboards b21 minus the diameter of the upright post. So as to ensure that the two blackboards b21 can be positioned on the same plane when in a retraction state, thereby being convenient for use and saving space. The retraction effect is shown in figure 5.

Further, spout a and spout b are logical groove, and the both ends of slide rail b4 all are provided with the dog, and the dog passes through the screw connection with slide rail b4 and realizes dismantling the setting. When in normal use, the stop block can realize the limiting function; when the sliding blackboard device 2 is not needed to be used or the sliding blackboard device breaks down and needs maintenance, the stop block can be disassembled, and the sliding blackboard device is convenient to take out.

In addition, the sliding and rotating display blackboard is provided with hand-pulled handrails at the positions of the two upright columns 23 close to the top, so that people can operate the blackboard more conveniently to slide.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. A sliding and rotating display blackboard is characterized by comprising a blackboard a (1), two sliding blackboard devices (2), a sliding rail a (3) and a sliding rail b (4), wherein the sliding rail a (3) is fixedly connected with the top of the blackboard a (1), and the sliding rail b (4) is fixedly connected with the bottom of the blackboard a (1);

the sliding blackboard device (2) comprises a blackboard b (21), two sliding devices (22), an upright post (23) and wheels (24), two ends of the blackboard b (21) are respectively fixedly provided with a shaft a, two ends of the shaft a are both provided with round holes, the sliding device (22) comprises a support (222), the support (222) is of a shifting fork structure, a shaft c (223) is arranged between the two shifting forks, a wheel (224) is sleeved outside the shaft c (223), the top of the support (222) is provided with a shaft b (221), the shaft b (221) penetrates through a circular hole at the end part of one shaft a and is connected with the shaft a through a bearing, the top end of the upright post (23) is provided with a shaft d, the shaft d passes through a round hole at one end of the other shaft a and is connected with the other shaft a through a bearing, the wheel (24) is fixedly connected with the bottom of the upright post (23), and a brake pad is further arranged on the wheel (24);

the bottom of the sliding rail a (3) is provided with a sliding chute a, the top of the sliding rail b (4) is provided with a sliding chute b, and the two sliding devices (22) are respectively arranged in the sliding chute a and the sliding chute b.

2. A sliding and rotating display blackboard according to claim 1, characterised in that the length of the sliding track b (4) is less than the sum of the lengths of the two blackboards b (21) minus the diameter of the upright.

3. The blackboard for displaying sliding and rotating as claimed in claim 1, wherein the chutes a and b are through slots, and the two ends of the sliding rail b (4) are connected with stoppers by screws.

4. A blackboard for the sliding and rotating display according to claim 1, characterised in that the two uprights (23) are provided, near the top, with handgrips.